ZWEIROHR-STOSSDAEMPFER

In order to obtain a "soft" characteristic required for ride comfort reasons or a special characteristic from a range of possible ones while at the same time rendering the shock absorber insensitive to faults in the electromagnetic control system in a twin-tube shock absorber for motor vehicles fitted with a damper piston and an electromagnetically actuatable one-way damper valve, the invention proposes that the damper valve (10) takes the form of a single or two-stage slide valve, the position of the slide being determined dependently upon the hydraulic pressure difference dropping above the damper valve (10), the volume flowing through the damper valve (10) and the control current of the electromagnetic actuator (45, 46, 47, 49, 50).

REGELBARER SCHWINGUNGSDAEMPFER

Stossdämpfer.

Schwingungsdämpfer zur Dämpfung von Bewegungsabläufen

Schwingungsdämpfer zur Dämpfung von Bewegungsabläufen von zwei sich relativ zueinander bewegenden Massen (1, 2), mit einem Zylinder (6) mit mindestens einem ein Druckmedium enthaltenden Arbeitsraum (12, 14) mit einem Arbeitsraumvolumen, wobei das Arbeitsraumvolumen durch eine Relativbewegung der beiden Massen (1, 2) zueinander veränderbar ist, mit einem mit dem mindestens einen Arbeitsraum (12, 14) verbundenen, mit mindestens einem Ventilkörper (40) steuerbaren, vom Druckmedium durchströmbaren Strömungsdurchlass (16), ferner mit einer mit Steuersignalen ansteuerbaren und in Abhängigkeit von den Steuersignalen eine Steuerkraft (F) erzeugenden Steuereinrichtung (26, 28, 30), wobei abhängig von der Steuerkraft (F) ein den mindestens einen Ventilkörper (40) beaufschlagender Vorsteuerdruck steuerbar ist, dadurch gekennzeichnet, dass der mindestens eine Ventilkörper (40) von der Steuerkraft (F) direkt betätigbar ist und dass zur direkten Betätigung des Ventilkörpers (40) die Steuerkraft (F) über ...

VALVE ARRANGEMENT FOR REGULATING VEHICLE SUSPENSION DAMPING PRESSURES

Adjustable damping valve arrangement

An adjustable damping valve arrangement comprises an actuator for controlling a main stage valve, wherein the main stage valve has a rigid main stage valve body which carries out an axial operating movement relative to a valve seat surface of the main stage valve. A pre-opening valve having at least one spring element which in turn preloads a pre-opening valve body precedes the main stage valve body. The main stage valve body is supported on the valve seat surface in the closed operating position by the pre-opening valve.

ADJUSTABLE HYDRAULIC DAMPER

Hydraulic fluid control valve, for a motor vehicle shock absorber, comprising piloted lamination module in the form of a cylinder with a slide valve

L'invention concerne une valve de contrôle de déplacement de fluide hydraulique, notamment utilisable dans un amortisseur (A) de véhicule automobile, comprenant un canal (1) d'entrée de fluide, un canal (2) de sortie de fluide, et un module de laminage (3) piloté électriquement et interposé entre le canal d'entrée et le canal de sortie. Selon l'invention, le module de laminage (3) comprend un cylindre (4) dans lequel sont définis, au moyen d'un tiroir coulissant (5) et d'une pièce mobile (8), deux orifices de laminage (71, 72) dont le premier (71) dépend du second (72), et la pièce mobile (8), qui contrôle le second orifice de laminage (72), est déplacée par un matériau magnétostrictif (93) soumis au champ magnétique réglable produit par une bobine (92).

HYDRAULIC VIBRATION DAMPENER REGULABLE FOR MOTOR VEHICLE

CUSHIONING DEVICE FOR THE SUSPENSION OF VEHICLE

Together of isolating valve for a shock absorber

Un ensemble de soupape d'isolement 27 disposé dans la conduite de dérivation d'un amortisseur, entre un trajet partiel haute pression et un trajet partiel basse pression, comporte une soupape d'isolement qui peut être amenée, par une commande extérieure, dans un état de disponibilité à l'ouverture, dans lequel l'ouverture effective peut être obtenue en fonction de la pression régnant dans le trajet partiel haute pression, lorsque la pression tombe en dessous d'une valeur prédéterminée. Par une adaptation de la course de déplacement a d'un corps d'obturation de soupape d'isolement à celle hs d'une armature d'aimant, en tenant compte d'une section d'écoulement de chambre de commande, il est possible d'éliminer des bruits et des variations de la courbe caractéristique de la force d'amortissement, même dans le cas d'un réglage de confort très souple.

VALVE ARRANGEMENT

A valve arrangement comprising a valve housing, a pilot chamber, a main valve member and a control valve member. The main valve member is axially movably arranged in the valve housing and is arranged to restrict a main fluid flow. The control valve member is movable in an axial direction relative the main valve member in response to an actuating force acting on the control valve member. The control valve member is arranged to interact with the main valve member to define axially separated pilot and bypass fluid restrictions. The pilot restriction restricts a pilot fluid flow out from the pilot chamber. The bypass restriction restricts a bypass flow bypassing the main fluid flow. The bypass flow is separate from the pilot fluid flow. The pilot and bypass restrictions are adjustable in response to the actuating force, thereby allowing simultaneous adjustment of the pilot pressure and the bypass fluid flow.

VALVE ASSEMBLY

The invention relates to an electrically controlled valve assembly, particularly for a controllable shock absorber, wherein the main stage valve body is configured as a valve disk (4, 5, 6, 7). A pressure chamber (12) is provided between the valve disk (4, 5, 6, 7) and a disk (9), wherein the radial extension of the pressure chamber is limited by an intermediate ring (8) being provided between the valve disk (4, 5, 6, 7) and the disk (9) in a liquid-tight manner.

MEANS FOR A SHOCK-ABSORBER

A shock-absorber is designed to be used in particular with a motor cycle or a motor car. The shock-absorber is so arranged as to permit the variation of the shock-absorbing capacity or the resistance of the shock-absorber by means of control impulses from an external unit in the form of a computer (40). The shock-absorber is of the kind which comprises a cylinder (2) operating with a fluid or with fluid/gas. Inside the cylinder is a fixed piston (3) which is provided with at least one passageway. In this passageway fluid is able to flow from one side (3a) of the piston to its other side, and vice versa. The piston has built into it an organ (17) capable of being controlled by the control unit (4) and so arranged as to vary depending on the control impulses (i1) received from the control unit the cross-sectional area of the passageway, in so doing causing a variation in the aforementioned shock-absorbing capacity.

Controllable hydraulic vibration damper for automotive vehicles

A controllable hydraulic vibration damper for automotive vehicles comprising a working cylinder which contains damping fluid and which is subdivided into two working chambers by a damping piston with a piston rod, the damper comprising at least one channel disposed outside of the working chambers, a valve assembly having at least one controllable valve, and a compensating chamber, which vibration damper is a simple structure and has an optimal control for the rebound and compression travel, and a first working chamber in permanent communication with the channel and the compensating chamber, while the second working chamber is connected with the channel and the compensating chamber by a valve assembly including an electronically and a series of one way acting valves.

Shock absorber with two seat valve

A shock absorber which in an event of an electrical defect provides a predetermined throttle cross section which provides a pressure drop in the throttle cross section that determines damping of fluid flow from one work chamber to another work chamber. Thus, in an event of a defect in a control system, an arbitrarily selectable and preferably approximately average damping is produced.

SHOCK ABSORBER WITH TWO SEAT VALVE

A shock absorber which in an event of an electrical defect provides a predetermined throttle cross section which provides a pressure drop in the throttle cross section that determines damping of fluid flow from one work chamber to another work chamber. Thus, in an event of a defect in a control system, an arbitrarily selectable and preferably approximately average damping is produced.

DAMPING FORCE VARIABLE VALVE

A damping force variable valve includes: a case that accommodates a working fluid therein; and a housing that divides an inside of the case into a first fluid chamber and a second fluid chamber. The housing includes first and second housings, which are adjacent to each other along a direction of an axis of the case. Inside the first housing, a control mechanism that controls an operation speed of the housing by adjusting a flow rate of the working fluid circulating through the first fluid chamber and the second fluid chamber is provided. The control mechanism includes: a first pilot chamber that communicates with the first fluid chamber through a first orifice; a second pilot chamber that communicates with the second fluid chamber through a second orifice; and a valve body that changes a posture while separating the first pilot chamber and the second pilot chamber from each other.

Damping force control type shock absorber

A piston 5 having a piston rod 6 connected thereto is fitted in a cylinder 2 having hydraulic oil sealed therein, and a flow of hydraulic oil induced by movement of the piston 5 is controlled by a damping force generating mechanism 26 to generate a damping force. In the damping force generating mechanism 26, damping force is generated by a pilot-type main valve 27 and a normally-open pilot valve 28 which is a solenoid valve, and the damping force is adjusted by energization of a coil 37. A fail-safe valve 100 is provided downstream of the pilot valve 28. During normal operations, the fail-safe valve 100 opens the flow path through excitation of the coil 37 of the pilot valve 28. In the event of a failure, due to loss of excitation, the fail-safe valve 100 restricts the flow path to generate an appropriate damping force in place of the pilot valve 28, which has become inoperable.

ADJUSTABLE DAMPING VALVE DEVICE FOR A VIBRATION DAMPER

Damping valve device for a vibration damper, including an actuator that acts on a preliminary stage valve body of a preliminary stage valve. The preliminary stage valve body is arranged in a pre-loading line with a main stage valve body of a main stage valve. The lifting path of the main stage valve body is proportional to the lifting path of the preliminary stage valve body, and the damping characteristic of the damping valve device is influenced by a valve spring arrangement. The preliminary stage valve body controls an adjustable spring compressor that determines the pre-loading of a main stage valve spring is part of the valve spring arrangement.

Continuously-variable damping system

Vibration damper with adjustable damping valve

Schwingungsdämpfer mit verstellbarem Dämpfventil (27), umfassend einen Aktuator, mit dem eine auf einen Ventilkörper wirkende Stellkraft beeinflusst werden kann, wobei eine Betriebsbewegung des Ventilkörpers (35) über eine hydraulische Dämpfeinrichtung gedämpft wird, in dem ein Verdrängerkörper (54) mit einem Dämpfraum (57) zusammenwirkt, wobei zwischen dem Verdrängerkörper und dem Dämpfraum ein Ringspalt vorliegt; der von einer Ringdichtung (61) abgedichtet wird und der Dämpfraum mit einer Dämpfkraft erzeugenden Drossel (65) ausgeführt ist.

SHOCK ABSORBER

A shock absorber (1) for objects operates with a damping function which can be varied by means of a member (15) which determines the size of a media passage between the top and bottom sides of a piston (10) belonging to the absorber. The member is designed in order, by means of the inertia of its mass, to execute a relative displacement movement in a bearing allocated thereto when acceleration force acting on the mass occurs on account of the acceleration in the object. By means of the said displacement movement, the member (15) affects the size of the media passage.

METHOD AND APPARATUS FOR ABSORBING MECHANICAL SHOCK

Hydraulic shock absorber

CONTROLLABLE VIBRATION DAMPER

Patent RU2015131631A3

“ВУ? 2015131631” АЗ Дата публикации: 20.02.2019 Форма № 18 ИЗПМ-2011 Федеральная служба по интеллектуальной собственности Федеральное государственное бюджетное учреждение 5 «Федеральный институт промышленной собственности» (ФИПС) ОТЧЕТ О ПОИСКЕ 1. . ИДЕНТИФИКАЦИЯ ЗАЯВКИ Регистрационный номер Дата подачи 2015131631/11(048786) 29.07.2015 Приоритет установлен по дате: [ ] подачи заявки [ ] поступления дополнительных материалов от к ранее поданной заявке № [ ] приоритета по первоначальной заявке № из которой данная заявка выделена [ ] подачи первоначальной заявки № из которой данная заявка выделена [ ] подачи ранее поданной заявки № [Х] подачи первой(ых) заявки(ок) в государстве-участнике Парижской конвенции (31) Номер первой(ых) заявки(ок) (32) Дата подачи первой(ых) заявки(ок) (33) Код страны 1. 2014-156843 31.07.2014 ]Р Название изобретения (полезной модели): [Х] - как заявлено; [ ] - уточненное (см. Примечания) ТРАНСПОРТНОЕ СРЕДСТВО, ОБОРУДОВАННОЕ АМОРТИЗАТОРОМ Заявитель: ХИТАЧИ ОТОМОУТИВ СИСТЕМС, ЛТД., Р 2. ЕДИНСТВО ИЗОБРЕТЕНИЯ [Х] соблюдено [ ] не соблюдено. Пояснения: см. Примечания 3. ФОРМУЛА ИЗОБРЕТЕНИЯ: [Х] приняты во внимание все пункты (см. Примечания) [ ] приняты во внимание следующие пункты: [ ] принята во внимание измененная формула изобретения (см. Примечания) 4. КЛАССИФИКАЦИЯ ОБЪЕКТА ИЗОБРЕТЕНИЯ (ПОЛЕЗНОЙ МОДЕЛИ) (Указываются индексы МПК и индикатор текущей версии) В60С 15/04 (2006.01) В60С 17/015 (2006.01) В60С 17/08 (2006.01) Е1ТбЕ 9/10 (2006.01) Е1бЕ 9/50 (2006.01) 5. ОБЛАСТЬ ПОИСКА 5.1 Проверенный минимум документации РСТ (указывается индексами МПК) ВбОС 11/00 - 11/64, 15/00 - 15/14, 17/00 - 17/08, 21/00 - 21/10, Е16Е 9/00 - 9/50 5.2 Другая проверенная документация в той мере, в какой она включена в поисковые подборки: 5.3 Электронные базы данных, использованные при поиске (название базы, и если, возможно, поисковые термины): Езрасепе, Рабеагсь 6. ДОКУМЕНТЫ, ОТНОСЯЩИЕСЯ К ПРЕДМЕТУ ПОИСКА Кате- Наименование документа с указанием (где необходимо) ...

Hydraulic shock absorber for e.g. motor vehicle suspensions with valve opening pressure of damper valve regulated directly by adjusting the opening pressure of the pressure regulating valve

The shock absorber has a hydraulic cylinder with piston, piston rod, and main and auxiliary fluid passages, connected to the cylinder, to permit hydraulic fluid flow dependent upon a movement of the piston. A damper valve is located in the main fluid passage. A pressure regulation valve in the auxiliary passage uses the hydraulic pressure between itself and a fixed opening, to apply it as a pilot pressure to the damper valve. The pressure regulation valve has a valve chamber between a cylindrical section and a slide block moving in the section. An axial thrust in the block is caused by a differential between surfaces in the valve chamber to accommodate a pressure, acting in direction of the block axis. A valve opening pressure is regulated corresponding to the balance between the thrust of the slide block and that of a magnet.

Adjustable hydraulic vibration damper

The damper has a piston on a rod, dividing a working cylinder filled with fluid into two parts, and a damping valve with a valve body. The valve body (9,11) is made in at least two parts. One part (9) is held in an axial guide. It is connected to the other part (11) so that the latter is able to be moved radially in another axial guide (4) relative to the first part. The valve seat (2) of the pre-control element (1) is fitted in the second part of the valve body (11). This seat may be formed by the first part of the valve body. There may be a spring (10) between the two body parts.

DAEMPFUNGSVORRICHTUNG FUER FAHRZEUGAUFHAENGUNG

SCHWINGUNGSDAEMPFER

Anschlagmodul zum positionsgenauen Anhalten eines Gegenstands

Die vorliegende Erfindung betrifft ein Anschlagmodul (24) zum positionsgenauen Anhalten eines Gegenstands (16, 20), der auf einer Transportstrecke (12) mit einer definierten Transportrichtung (19) bewegt wird. Das erfindungsgemäße Anschlagmodul (24) weist eine fluidischen Dämpfungseinrichtung (30) zur Dämpfung des Anschlagglieds (28) auf. Ferner weist das Anschlagmodul (24) eine Drosseleinrichtung (62), ein Stellelement (64) sowie einen Detektor (66) auf. Die Drosseleinrichtung (62) ist dazu ausgebildet, die Arbeitsbewegung der Dämpfungseinrichtung (30) zu dämpfen, in dem sie einen Strömungswiderstand für das aus dem Dämpfungszylinder (34) während der Arbeitsbewegung austretende Fluid erzeug. Das Stellelement (64) ist dazu ausgebildet, in einer ersten Stellung ein Entweichen des Fluids aus dem Zylinder (34) durch die Drosseleinrichtung (62) hindurch zu verhindern, und in einer zweiten Stellung ein Entweichen des Fluids aus dem Zylinder (34) durch die Drosseleinrichtung (62) hindurch zu ...

REGELBARER SCHWINGUNGSDÄMPFER.

Dämpfungskraftgesteuerter Stoßdämpfer

Dämpfungskraftgesteuerter Stoßdämpfer, wobei ein Kolben mit einer mit diesem verbundenen Kolbenstange in einem Zylinder mit einem darin versiegelten Hydrauliköl angeordnet ist, und ein Hydraulikölstrom, der durch Bewegung des Kolbens hervorgerufen wird, von einem Dämpfungskrafterzeugungsmechanismus 26 gesteuert wird, um eine Dämpfungskraft zu erzeugen. In dem Dämpfungskrafterzeugungsmechanismus 26 wird Dämpfungskraft von einem pilotartigen Hauptventil 27 und einem normalerweise geöffneten Pilotventil 28 erzeugt, welches ein Solenoidventil ist, und die Dämpfungskraft wird durch die Erregung einer Spule 37 eingestellt. Ein Ausfallsicherungsventil 100 ist dem Pilotventil 28 nachgeschaltet angeordnet. Während normaler Vorgänge öffnet das Ausfallsicherungsventil 100 den Strömungspfad durch Anregung der Spule 37 des Pilotventils 28. In Falle eines Ausfalls, aufgrund eines Anregungsverlusts, beschränkt das Ausfallsicherungsventil 100 den Strömungspfad, um eine geeignete Dämpfungskraft anstelle ...

ELECTRICALLY OPERATED FLUID VALVE

PROPORTIONAL VALVE

CONTROL VALVE

IMPROVED ABSORPTION MECHANISM FOR THE MOVEMENTS OF A MASS REGARDING YOUR CARRIER

ABSORPTION MECHANISM FOR THE MOVEMENTS OF A MASS REGARDING YOUR CARRIER

Damping valve

ADJUSTABLE SYSTEM Of DAMPING Uninterrupted

ADJUSTABLE SHOCK ABSORBER FOR MOTOR VEHICLES

ADJUSTABLE DAMPER.

ADJUSTABLE SHOCK ABSORBER, IN PARTICULAR FOR MOTOR VEHICLES

FITTING Of DAMPING OF the MOVEMENTS Of a MASS COMPARED TO a SUPPORT

L'invention concerne un agencement d'amortissement de mouvement d'une masse par rapport à un support auquel elle est reliée par l'intermédiaire d'un dispositif de suspension à amortissement hydraulique. L'agencement comportant un piston (7) au bout d'une tige (2) fixée à ladite masse suspendue et mobile dans un carter (3) fermé solidaire dudit support et un module de laminage (13) du fluide à l'intérieur du carter, qui comporte un clapet constitué d'un diaphragme de laminage d'une partie du fluide hydraulique, et des moyens de laminage prévus dans une voie de dérivation pour le laminage de l'autre partie de ce fluide hydraulique. L'agencement est caractérisé en ce qu'il ne comporte qu'un seul module de laminage (13) dans lequel le sens de l'écoulement du fluide hydraulique est le même pendant les phases de détente et de compression. L'invention est utilisable dans les suspensions de véhicules automobiles.

SHOCK ABSORBER HAVING VARIABLE DAMPING FORCE, CAPABLE OF CONTROLLING DAMPING FORCE OF A VEHICLE USING A DAMPING FORCE VARIABLE VALVE EMPLOYING A PILOT CONTROL SCHEME

PURPOSE: A shock absorber having variable damping force is provided to prevent a ring disc of a damping force variable valve from being excessively bent without increasing the thickness of the ring disc. CONSTITUTION: A shock absorber having variable damping force comprises a damping force variable valve. The damping force variable valve includes a disc valve and a pilot chamber(130) provided in a housing(110). The disc valve includes a main disc(120a), a pilot disc(120b) adjacent to a rear surface of the main disc, a ring disc(120c) adjacent to a rear surface of the pilot disc, and a plurality of sub-discs(120d). A slit(Sa) is formed at an inner peripheral portion of the main disc and a slit(Sb) is formed at an outer peripheral portion of the pilot disc. An arc-shape slit(Sc) is formed at the center of the ring disc, and a slit(Sd) is formed at an outer peripheral portion of the sub-disc. © KIPO 2008 ...

DAMPING FORCE VARIABLE VALVE OF A SHOCK ABSORBER CAPABLE OF OBTAINING THE DESIRED DAMPING FORCE BY EASILY VARYING THE DAMPING FORCE OF A VARIABLE VALVE

PURPOSE: A damping force variable valve is provided to improve the ride comfort with preventing the sudden increase of the damping force by more discharging the working fluid according to the increasing pressure of the working fluid flowing in the variable valve. CONSTITUTION: A damping force variable valve(100) comprises a retainer(151), a valve main body(170), elastic members(181, 182), a spool guide(145), and a spool. The retainer has the influx passage in order that the working fluid which flows in the piston rod is passed through. The valve main body is located in the lower part of the retainer and forms the exhaust passage in which the working fluid flows in the influx passage of the retainer. The elastic member pressurizes the valve body to the retainer. The spool guide forms the back pressure controlling passage in order to flow the working fluid to the back pressure chamber which is located in the rear side of the valve main body. The spool is moved up and down according to the ...

Damping force control valve and shock absorber using the same

The present invention relates to a damping force control valve and a shock absorber using the same. An object of the present invention is to provide a damping force control valve, in which the damping force characteristic at a high speed is maintained in a low level, and a shock absorber using the same. According to the present invention for achieving the object, there is provided a damping force control valve, which includes a high pressure region in communication with a tension chamber of a cylinder and a low pressure region in communication with a reservoir chamber, and controls a damping force by adjusting pressure of a pilot chamber by orifices, each of which has a channel controlled to open or close by a spool. The valve comprises a main valve installed between the high and low pressure regions and controlled to open or close according to pressure of the high pressure region, an initial preload and pressure of the pilot chamber, the main valve allowing working fluid to flow from the ...

Restriction valve device for hydraulic pressure fluids in vehicle shock absorbing mechanisms

A restriction valve device for hydraulic pressure fluid in a vehicle shock absorbing mechanism comprises a valve seat member with at least one main opening for the passage of said pressure fluid, said main opening being closable by means of a movable spring-biased valve body, and at least one auxiliary opening for the pressure fluid, said auxiliary opening being selectively closable by a closure element. To provide for a fast and reliable change or control of the functional characteristics of the damper, yet making same inexpensive and uncomplicated, a closed variable space is confined between the valve seat member and the valve body, the auxiliary opening being connected with said space so as to admit when the closure element is open, the pressure fluid thereinto and thus apply also the pressure of said fluid onto said valve body to effect an increased pressure force on said body against the force of the biasing spring so as to change the functional characteristics of the restriction valve ...

FLUID-FILLED, FREQUENCY-DEPENDENT DAMPER

Vehicle shock absorber control

Vehicle having per wheel at least one, slidable in and out, continuously variable shock absorber (40) which is mounted between the sprung and unsprung part, in which a control system for the damping force is present for each wheel, in which near the fastening of the shock absorber to the sprung part is provided an acceleration pick-up which is connected to the control system, in which each shock absorber has a direction sensor (41) which is connected to the control system and can detect the sliding in and out of each other of the shock absorber parts, and in which each of the control systems controls the damping force of the corresponding shock absorber at least depending on the magnitude and direction of the speed of the sprung part determined by means of the acceleration pick-up, on condition that the product of v1 and the difference (v1-v2) determined by the direction pick-up is greater than zero, where v1 is the speed of the sprung part, and v1 and v2 in the same direction are regarded as positive. The control of the damping force can also be refined further by regulating it depending not only on the magnitude and direction of the speed of the sprung part, but also depending on the magnitude of the vertical displacement and/or the acceleration and/or differentials of the acceleration of the sprung part.

ТРАНСПОРТНОЕ СРЕДСТВО, ОБОРУДОВАННОЕ АМОРТИЗАТОРОМ

FIELD: transportation. SUBSTANCE: group of inventions relates to a vehicle equipped with a shock absorber. Vehicle comprises self-propelled vehicle body, in which front wheel and rear wheel are provided, mechanical damper with variable damping force and damper with adjustable damping force. Mechanical damper with variable damping force is located between vehicle body and front wheel and is configured to mechanically change damping force. Shock absorber with adjustable damping force is located between vehicle body and rear wheel and is configured to adjust damping force according to control signal from controller by means of actuator at vehicle turn. EFFECT: possibility to adjust shock absorbers damping force. 32 cl, 8 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 700 290 C2 (51) МПК B60G 15/04 (2006.01) B60G 17/015 (2006.01) B60G 17/08 (2006.01) F16F 9/10 (2006.01) F16F 9/50 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК B60G 15/04 (2019.05); B60G 17/015 (2019.05); B60G 17/0162 (2019.05); B60G 17/0165 (2019.05); B60G 17/018 (2019.05); B60G 17/08 (2019.05); F16F 9/10 (2019.05); F16F 9/342 (2019.05); F16F 9/465 (2019.05); F16F 9/50 (2019.05) (21)(22) Заявка: 2015131631, 29.07.2015 29.07.2015 16.09.2019 Приоритет(ы): (30) Конвенционный приоритет: 31.07.2014 JP 2014-156843 (43) Дата публикации заявки: 02.02.2017 Бюл. № 4 (56) Список документов, цитированных в отчете о поиске: US 4813705 A, 21.03.1989. WO 2013081004 A1, 06.06.2013. US 4886291 A, 12.12.1989. US 6295493 B1, 25.09.2001. JP 2013241075 A, 05.12.2013. 2 7 0 0 2 9 0 R U Адрес для переписки: 129090, Москва, ул. Б. Спасская, 25, стр. 3, ООО "Юридическая фирма Городисский и Партнеры" (54) ТРАНСПОРТНОЕ СРЕДСТВО, ОБОРУДОВАННОЕ АМОРТИЗАТОРОМ (57) Реферат: Группа изобретений относится к выполнен с возможностью механического транспортному средству, оборудованному изменения силы демпфирования. Амортизатор с амортизатором. Транспортное средство содержит ...

ТРАНСПОРТНОЕ СРЕДСТВО, ОБОРУДОВАННОЕ АМОРТИЗАТОРОМ

РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2015 131 631 A (51) МПК F16F 9/00 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ЗАЯВКА НА ИЗОБРЕТЕНИЕ (21)(22) Заявка: 2015131631, 29.07.2015 (71) Заявитель(и): ХИТАЧИ ОТОМОУТИВ СИСТЕМС, ЛТД. (JP) Приоритет(ы): (30) Конвенционный приоритет: 31.07.2014 JP 2014-156843 Адрес для переписки: 129090, Москва, ул. Б. Спасская, 25, стр. 3, ООО "Юридическая фирма Городисский и Партнеры" Стр.: 1 A 2 0 1 5 1 3 1 6 3 1 R U A (57) Формула изобретения 1. Транспортное средство, оборудованное амортизатором, содержащее: кузов самодвижущегося транспортного средства, в котором предусмотрены переднее колесо и заднее колесо; амортизатор с переменной механической силой демпфирования, расположенный между кузовом транспортного средства и передним колесом и выполненный с возможностью механического изменения силы демпфирования; и амортизатор с регулируемой силой демпфирования, расположенный между кузовом транспортного средства и задним колесом и выполненный с возможностью демпфирования силы с помощью активатора. 2. Транспортное средство по п. 1, в котором амортизатор с переменной механической силой демпфирования представляет собой амортизатор, чувствительный к рабочему ходу, выполненный с возможностью изменения силы демпфирования, в соответствии с рабочим ходом, и в котором амортизатор, чувствительный к рабочему ходу, устанавливает низкое значение жесткости кузова транспортного средства в направлении крена на стороне переднего колеса и амортизатор с регулируемой силой демпфирования переменно устанавливает жесткость кузова транспортного средства на стороне заднего колеса, используя электронное управление. 3. Транспортное средство по п. 1 или 2, в котором амортизатор с регулируемой силой демпфирования выполнен с возможностью переменного регулирования силы демпфирования на стороне заднего колеса с помощью активатора таким образом, что по мере увеличения угла крена кузова транспортного средства угол продольного наклона в направлении ...

Verstellbare Dämpfventileinrichtung

Verstellbare Dämpfventileinrichtung, umfassend ein Hauptstufenventil, das von einem Vorstufenventil mit einem Vorstufenventilkörper angesteuert wird, wobei dem Vorstufenventil eine Notbetriebeinrichtung zugeordnet ist, die das Betriebsverhalten des Hauptstufenventils bestimmt, wobei die Notbetriebeinrichtung einen Notbetriebsanker aufweist, der ausschließlich im Notbetrieb von mindestens einer Spannfeder auf den Vorstufenventilkörper in eine den Notbetrieb der Dämpfventileinrichtung bestimmenden Stellung vorgespannt wird.

Verstellbare Dämpfventileinrichtung

Verstellbare Dämpfventileinrichtung, umfassend ein Hauptstufenventil, wobei hydraulisch parallel zu dem Hauptstufenventil ein Voröffnungsquerschnitt ausgeführt ist, der bei geschlossenem Hauptstufenventil eine Dämpfkraft erzeugt, wobei sich ein Hauptstufenventilkörper bei geschlossener Position zumindest mittelbar auf einem Ventilsitzring der Dämpfventileinrichtung abstützt, wobei der Ventilsitzring eine Aufnahme für ein Voröffnungsventil aufweist, das strömungsrichtungsabhängig einen Voröffnungsquerschnitt freigibt.

Shut-off valve means for a vibration damper

A shut-off valve 27 is arranged in the bypass of a damper between a high pressure portion 23 and a low pressure portion 23a leading to a compensating chamber 19. The valve 27 has a shut-off valve member 33 co-operating with a seating 31. Operation of the, valve member 33 is controlled by the pressure acting on face 33a, opposing pressure in a control chamber, a spring 37 and a solenoid, and is closed when the solenoid is de-energised. The valve 27 has a control chamber outlet valve member 45 and an outlet valve member 47, provided between the shut-off valve member 33 and the armature 41. The maximum travel (hs) of the armature 41 is greater than the maximum travel (a) of the valve member 33, so that with the armature 41 and the valve member 33 in the fully open position, a control chamber outlet 47b between the control chamber outlet valve members 45 and 47 is always fully open, to ensure unrestricted fluid flow to the compensating chamber 19. ...

DAMPING DEVICE FOR A VEHICLE SUSPENSION

SHOCK ABSORBER WITH CHANGEABLE ONE DAEMPFUNGSCHARAKTERISTIK.

RESTRICTION VALVE DEVICE FOR HYDRAULIC PRESSURE FLUIDS IN VEHICLE SHOCK ABSORBING MECHANISMS

... 12 A restriction valve device for hydraulic pressure fluids in vehicle shock absorbing mechanisms comprises a valve seat member with at least one main passage for the flow of said pressure fluid, said main passage being closable by means of a movable spring-biased valve body, and at least one auxiliary passage for the pressure fluid, said auxiliary passage being selectively closable by a closure element. To provide for a fast a reliable change or control of the functional characteristics of the damper, yet making same inexpensive and uncomplicated, the invention suggests that a closed variable space is confined between the valve seat member and the valve body, the auxiliary passage being connected to said space to provide, under the control of the closure element, for a variable pressure of said fluid onto said valve body against the force of the biasing spring so as to change the functional characteristics of the restriction valve device.

Damping force control valve and shock absorber using the same

The present invention relates to a damping force control valve and a shock absorber using the same. An object of the present invention is to provide a damping force control valve, in which the damping force characteristic at a high speed is maintained in a low level, and a shock absorber using the same. According to the present invention for achieving the object, there is provided a damping force control valve, which includes a high pressure region in communication with a tension chamber of a cylinder and a low pressure region in communication with a reservoir chamber, and controls a damping force by adjusting pressure of a pilot chamber by orifices, each of which has a channel controlled to open or close by a spool. The valve comprises a main valve installed between the high and low pressure regions and controlled to open or close according to pressure of the high pressure region, an initial preload and pressure of the pilot chamber, the main valve allowing working fluid to flow from the ...

FITTING Of DAMPING OF the MOVEMENTS Of a MASS Compared to UNSUPPORT

ADJUSTABLE HYDRAULIC DAMPER

FITTING IMPROVES DAMPING OF the MOVEMENTS Of a MASS PARRAPPORT HAS a SUPPORT

FITTING OF VALVES TO CONTROL the PRESSURE Of DAMPING IN SUSPENSIONS OF VEHICLES

Vibration dampener

Dans cet amortisseur de vibrations comportant une dérivation entre une chambre de travail et une chambre de compensation (28), une soupape d'isolement (40, 42) est prévue dans la dérivation (32, 38, 44, 32a). La soupape d'isolement (40, 42) est exposée, d'un côté, à la pression régnant dans la chambre de travail annulaire et de l'autre côté, à la pression régnant dans une chambre de commande (60), qui est réalisée directement limitrophe à un élément d'isolement de soupape (42) de la soupape d'isolement (40, 42) et alimentée, par un tronçon d'étranglement (42d) par la pression régnant dans la chambre de travail annulaire (30b). La chambre de commande (60 est réalisée avec une évacuation de chambre de commande (42a, 56a). Cette évacuation de chambre de commande (42a, 56a) est ouvert ou fermé à volonté au moyen d'un composant du corps (50, 56), qui détermine une section transversale.

AGENCEMENT DE VALVES POUR REGULER LA PRESSION D'AMORTISSEMENT DANS DES SUSPENSIONS DE VEHICULES

UN AGENCEMENT DE VALVES POUR REGULER LA PRESSION D'AMORTISSEMENT AGISSANT SUR UN PISTON 12, DANS UNE SUSPENSION DE VEHICULE, COMPORTE UN TIROIR 20, QUI FOURNIT LES OBTURATEURS 21, 22 DE DEUX VALVES 21, 23 ET 22, 24 MONTEES EN SERIE ENTRE LES FACES OPPOSEES DU PISTON. CE TIROIR 20 EST SOLLICITE DANS UN SENS PAR UNE PRESSION PI QUI REGNE ENTRE LES DEUX VALVES ET, DANS L'AUTRE SENS, PAR UNE PRESSION D'ASSERVISSEMENT PS REGULEE PAR UNE AUTRE VALVE 28, QUI REAGIT A LADITE PRESSION PI ENTRE LES DEUX VALVES ET A UN SIGNAL ELECTRIQUE ENVOYE A UN MOTEUR A COUPLE CONSTANT 35. L'ENSEMBLE CONSTITUE UN SYSTEME FERME, DANS LEQUEL LA FORCE D'AMORTISSEMENT EST PROPORTIONNELLE AU COURANT DU MOTEUR.

ADJUSTABLE SYSTEM Of DAMPING Uninterrupted

L'invention concerne un agencement d'amortissement des mouvements d'une masse par rapport à un support auquel elle est reliée par l'intermédiaire d'un dispositif de suspension pourvu d'au moins un ressort et de moyens d'amortissement hydrauliques.Cet agencement est du type mettant en mouvement du fluide hydraulique et comprenant au moins un dispositif de laminage de ce fluide par au moins un orifice à travers lequel le fluide est amené à s'écouler, le dispositif de laminage comportant des moyens de variation en continu des caractéristiques d'amortissement. L'agencement est caractérisé en ce que le dispositif de laminage comprend, d'une part, un étage pilote comprenant les moyens de variation en continu (10, 12) des caractéristiques d'amortissement et à travers lequel est laminée une partie (F1) du débit de fluide et, d'autre part, un étage de puissance à travers lequel est laminée l'autre partie (F2) du débit de fluide.L'invention est utilisable par des suspensions de véhicule automobile ...

DAMPER CAPABLE OF ENABLING THE EASY DETERMINATION OF THE POSITION OF A BAFFLE PLATE

PURPOSE: A damper is provided to suppress the generation of cavitation and aeration by suppressing gas within a reservoir from flowing into oil liquid as a bubble. CONSTITUTION: A damper comprises a cylinder(2), a piston(5), a rod(6), an outer case(3), a reservoir(4), a connection tube(20), and an inlet port(24). The cylinder stores fluid and is sealed. The piston is inserted into the cylinder. The rod connects to the piston and is extended to the outside of the cylinder. The outer case is formed on the outer surface of the cylinder. The reservoir is formed between the cylinder and the outer case, and fluid and gas are sealed therein. The connection tube is connected within the cylinder and is extended to the outside of the outer case. The inlet port is formed on the outer case, and the fluid flows in the reservoir from the outside of the outer case therethrough. COPYRIGHT KIPO 2012 ...

FOR STOTDEMPARE AVSEDD ANORDNING FOR ATT MOJLIGGORA VARIATION AV DEMPFORMAGAN

ANORDNING VID STOTDEMPARE

Shock absorber with a check valve and a check valve for a shock absorber

A shock absorber with a check valve device and a check valve device for a shock absorber is disclosed. The check valve device located in the bypass of a shock absorber between a high-pressure segment and a low-pressure segment has a check valve which can be moved by an external control into a standby opening status, in which the actual opening can be performed as a function of the pressure prevailing in the high-pressure segment, when the pressure falls below a predetermined value. By coordinating the stroke distance of a check valve body with a magnet armature, and taking into consideration a control chamber discharge cross section, noises and fluctuations of the damping force characteristic can be eliminated even with a very soft comfort setting of the check valve device.

SHOCK ABSORBER

A shock absorber includes: a cylinder; a piston; a piston rod; and a damping-force generating device that controls a flow of oil, caused by sliding of the piston in the cylinder, wherein the damping-force generating device includes: a valve body that generates a damping force according to opening and closing of the valve body on a channel in which the oil flows; a valve seat on which the valve body seats to close the channel; and an actuator that includes a plunger generating thrust to the valve body in a valve closing direction and a plunger chamber in which the oil is filled in order to actuate the plunger, and the plunger chamber communicates with a downstream side in a flowing direction of the oil with reference to a place where the valve body seats on the valve seat.

ADJUSTABLE SHOCK ABSORBER

Controlled damper for vehicle suspension - has separate solenoid control valves for compression and decompression

The damper has separate control valves (7.1,7.2) and separate non return valves (8.1,8.2) to cater for the compression and decompression stages. Two control ducts (10,11) link the two sides of each control valve and the variable valves are operated by solenoids. One set of valves is in the damping piston and one set is in the base of the damper. The variable flow valve has a needle to adjust the flowrate. The valve blocks are fitted as separate units and controlled by a processor control. ADVANTAGE - Improved response suspension, improved stability and comfort.

Dämpfer

Dämpfer

Solenoid valve i.e. proportional throttle valve, for adjustable shock absorber, has armature movably guided in sleeve section, and tappet of hydraulic pressure reaction exposed, where pressure reaction is dependent on stroke of tappet

The valve has a magnetic armature (4) axially movably guided in a sleeve section (6) of a housing as a component of a magnetic drive. A valve tappet (18) is actuatable by the magnetic armature, and has a valve closing unit (3) working together with a valve seat (2) for adjusting a passage between pressure medium ducts, where the valve seat is arranged in the housing. A solenoid fixed at the housing generates magnetic force for stroke activation of the armature. The valve tappet of the hydraulic pressure reaction is exposed, where the pressure reaction is dependent on the stroke of the tappet.

Vibration damper with adjustable damping force

The damper has a pressure tube and piston with axially movable piston rod. It has a main-stage and pre-stage valves. The pre-stage valve has two alternating controllable control cross-sections (39a/b). The passing flow, depending on the direction, passes one of these and one no-return valve (31a/b) opening in the direction of flow. The control cross-section (39a/b) of the pre-stage valve consists of a seating surface (55a/b) in combination with a conical surface (53a/b). A further through-flow cross-section (59) merges with the control cross-section. The through-flow cross-section can be adjusted by an actuator path.

Schwingungsdämpfer mit verstellbarer Dämpfkraft

Schwingungsdämpfer mit verstellbarer Dämpfkraft, umfassend einen Ventilkörper, der mittels eines Aktuators zu einer Ventilsitzfläche gegen eine Federkraft eine Betriebsbewegung ausführt, wobei eine die Funktion Ventildurchlassquerschnitt-Energiezufuhr des Aktuators beschreibende Kennlinie zumindest zwei Bereiche unterschiedlicher Steigung aufweist, wobei der Ventilkörper (11) von dem Aktuator (7; 9) gegen eine nichtlineare Federkraft verstellt wird, dadurch gekennzeichnet, dass der Ventilkörper (11) wechselseitig von mindestens einer Feder (39; 13b; 13c) beaufschlagt wird, wobei die Federkraft für mindestens eine Beaufschlagungsrichtung eine nicht lineare Kennlinie aufweist und mindestens zwei in Reihe geschaltete Federn (13b; 13c) verwendet werden, wobei ein Schaltelement (41) den Einsatzpunkt einer der Federn (13b; 13c) steuert, wobei das Schaltelement (41) von einer der Federn (13c) gegen einen Anschlag (43) vorgespannt wird und im Verlauf einer Öffnungsbewegung des Ventilkörpers (11 ...

Hydraulischer Schwingungsdämpfer mit einstellbarer Dämfpungskraft

Regelbares Dämpfungsventil

Hydraulikstoßdämpfer mit einstellbarer Dämpfungskraft

Verstellbare Dämpfventileinrichtung

Verstellbare Dämpfventileinrichtung für einen Schwingungsdämpfer, umfassend einen Aktuator, der auf einen mehrteiligen Vorstufenventilkörper eines Vorstufenventils eine Betätigungskraft ausübt, wobei das Vorstufenventil über einen relativ zu einem aktuatorseitigen Schaftabschnitt auf einen axial beweglichen Vorstufenventilschließkörper eine Schließkraft auf ein Hauptstufenventil beeinflusst, indem es das Druckniveau in einem Steuerraum der Dämpfventileinrichtung bestimmt, wobei ein Hauptstufenventilkörper des Hauptstufenventils bei einer Abhubbewegung einen Rückraum komprimiert, der über das Vorstufenventil mit dem Steuerraum verbunden ist, wobei eine Vorstufenventilschließfeder den Vorstufenventilschließkörper unabhängig von der Aktuatoransteuerung in Schließrichtung beaufschlägt und der Rückraum einen Abflusskanal aufweist, der ein Dämpfventil aufweist, das bei einer Abhubbewegung des Hauptstufenventilkörpers und abgeschlossenem Rückraum eine Dämpfkraft erzeugt.

Shock absorber, with electromagnetically biased pressure responsive valve

An adjustable shock absorber for motor vehicles has a cylinder containing damping fluid, a piston rod arranged to be axially displaceable in the cylinder, and a damping piston secured to the inner end of the piston rod. The damping piston divides the cylinder chamber into two working chamber compartments and is provided with fluid flow passages which produce damping forces, the effective cross-section of these flow passages being controllable by a throttling member and an electromagnetic drive controlling the throttling member, with the electromagnetic drive including a coil winding which is mounted in the damping piston. In order to achieve improved control of the damping force the throttling member is under the influence on the one hand of the fluid pressure difference between the two working chamber compartments and on the other hand of a restoring force which is created by the electromagnetic drive. Preferably, a hydraulic compensating device which reinforces this restoring force is ...

Shut-off valve means for a vibration damper

STEUERVENTIL

A control valve for guiding pressurized medium to an Actuator (23), said actuator (23) being arranged to Dampen the vibrations of a process device connected Thereto. The control valve comprises a control member (19, 60) for controlling the flow of the medium, and at Least one coil (20, 20a, 20b) that is arranged around said Control member (19, 60) for moving the control member (19, 60) in the magnetic field.

Flow-control valve and damper

Damping force control valve and shock absorber using the same

The present invention relates to a damping force control valve and a shock absorber using the same. The present invention is conceived to solve the aforementioned problems in the prior art. An object of the present invention is to provide a damping force control valve, which has an improved inner channel so that a damping force is operated in a middle mode when an electric or mechanical trouble causes a shock absorber to be out of order or malfunction, and a shock absorber using the same. According to the present invention, there is provided a damping force control valve, which includes a high pressure region in communication with a tension chamber of a cylinder and a low pressure region in communication with a reservoir chamber, and controls a damping force by adjusting pressure of a pilot chamber by first and second variable orifices, the first and second variable orifices having channels controlled to open or close by a spool. The damping force control valve comprises a main valve opened ...

CONTROLLABLE HYDRAULIC VIBRATION DAMPER FOR MOTOR VEHICLE

ADJUSTABLE SHOCK ABSORBER Of OSCILLATIONS FOR MOTOR VEHICLES

VARIABLE VALVE FOR DAMPING FORCE AND SHOCK ABSORBER OF USING THE SAME, CAPABLE OF INSTALLING ORIFICE IN INLET OF PILOT FLUID PASSAGE, THEREBY ALLOWING SOCK ABSORBER TO HAVE HIGH DAMPING RATE

PURPOSE: A variable valve for a damping force and a shock absorber of using the same are provided to restrict a flow rate supplied to the second and third passages to slightly maintain the pressure of inlets of the first and second variable orifices, thereby restricting a leakage amount toward the second variable orifice under a high-speed condition in a soft mode. CONSTITUTION: The first passage(Qm) couples a high-pressure side to a low pressure side by opening a valve. The second passage(Qr) is connected to the high-pressure side and the low pressure side by the first fixing orifice(Kr) and the first variable orifice(Kvr). The third passage(Qv) is connected to the high-pressure side and the low pressure side by opening the second variable orifice(Kcr) and the second fixing orifice(Kc). The third passage(Qv) controls the pressure of a pilot chamber according to the pressure of the second variable orifice(Kcr) and the second fixing orifice(Kc). © KIPO 2007 ...

Twin-pipe shock absorber

A twin-pipe shock absorber comprises a working cylinder (1), a piston (4) which is movable in the cylinder and has a passage and upstream valve (13, 14, 15), and external pipe (2) which is fitted around the working cylinder having an oil tank (3) formed therebetween, a disc (7) having a passage (16) and an upstream valve (17) positioned near the passage to shut off the working cylinder, a central pipe (10) extending through the piston (4) having its bottom end projecting through the disc (7) so as to produce a shock absorber in which the shock absorption can be adapted very rapidly to the frequency of movement of the unsprung wheel guide part, the damper valve being disposed at the bottom end of the central pipe (10), and a regulation device to regulate the damping exerted by the damper valve depending at least on the frequency which the working cylinder vibrates.

Damping force variable shock absorber

A damping force variable shock absorber is provided, which is configured to prevent a ring disc of a damping force variable valve from being excessively bent without increasing the thickness of the ring disc. The damping force variable shock absorber includes a damping force variable valve controlled in a pilot control manner by operating a solenoid. The damping force variable valve includes a disc valve and a pilot chamber provided in a housing to vary damping force. The disc valve includes a main disc, a pilot disc-S provided adjacent to the main disc in the rear thereof, and a ring disc having an outer periphery supported on a supporting portion of the housing. A spacer disc is inserted between the main disc and the pilot disc-S, the spacer disc having an outer diameter smaller than an outer diameter of an arc-shaped slot of the ring disc.

DAMPING FORCE VARIABLE SHOCK ABSORBER

There is provided a compact damping force variable shock absorber capable of implementing different adjustments for a compression-side stroke and an extension-side stroke as initial settings. A damping force variable device in one embodiment includes: a main valve that opens and closes to control flow of oil caused by sliding of a piston in a cylinder, thereby generating damping force; a pilot chamber into which a portion of the flow of the oil is introduced so that internal pressure is applied to the main valve in a valve-closing direction; a pilot valve that opens and closes to adjust the internal pressure of the pilot chamber; and a communication passage that communicates the pilot chamber with a rod-side oil chamber or a piston-side fluid chamber. 1. A damping force variable shock absorber comprising:a cylinder in which fluid is enclosed;a piston slidably fitted into the cylinder;a piston rod having one end connected to the piston and the other end extended outside the cylinder;a rod-side fluid chamber partitioned by the piston and provided closer to the other end in an axial direction of the cylinder than the piston;a piston-side fluid chamber provided closer to one end in the axial direction of the cylinder than the piston; anda damping force variable device that controls flow of the fluid enclosed in the cylinder so that damping force can be varied, wherein a main valve that opens and closes to control the flow of the fluid caused by sliding of the piston in the cylinder, thereby generating damping force;', 'a pilot chamber into which a portion of the flow of the fluid is introduced so that internal pressure is applied to the main valve in a valve-closing direction;', 'a pilot valve that opens and closes to adjust the internal pressure of the pilot chamber; and', 'a communication passage that allows the pilot chamber or a passage between the pilot chamber and the pilot valve to communicate with the rod-side fluid chamber or the piston-side fluid chamber., ' ...

Shock absorber

Shock absorber with an adjustable damping characteristic

DAMPING FORCE CONTROLLER FOR SHOCK ABSORBER

PURPOSE: To set a damping force independently by reducing, by way of a second valve element or second throttle, the pressure of a pressure chamber with which one side of a sliding body or movable member provided in a piston makes contact. CONSTITUTION: A high pressure on either the upper or lower surface of a piston 1 is selectively introduced via check valves 18c, 18d and pilot flow passages 5c, 5d to a second pressure chamber V2 on the lower surface of a sliding body (first valve element) 7 mounted in a piston 1 to open and close main flow passages 4a, 4b. A first throttle 7d is provided between the first and second pressure chambers V1, V2 and the pressure of the first pressure chamber V1 is allowed to escape to the low pressure side of either the upper or lower surface of the piston via the check valves 18a, 18b by opening and closing a second valve element 8 by means of a proportional magnet 13, and the sliding body 7 is moved upward by the differential pressure between the pressure ...

ZYLINDER

Hydraulischer, regelbarer Schwingungsdämpfer

STOSSDAEMPFER ZUR DAEMPFUNG VON BEWEGUNGSABLAEUFEN

Damping valve

A damping valve comprises a through-hole forming a passage for a working fluid. A poppet having a center axis is seated on a valve seat around the through-hole. The poppet is housed in a housing so as to be free to slide along the center axis. The poppet is pressed against one wall surface of the housing by a biasing mechanism, that biases the poppet in a direction perpendicular to the center axis, vibration of the poppet is thereby suppressed.

Adjustable Damping Valve Arrangement

An adjustable damping valve arrangement comprises an actuator for controlling a main stage valve, wherein the main stage valve has a rigid main stage valve body which carries out an axial operating movement relative to a valve seat surface of the main stage valve, wherein a pre-opening valve having at least one spring element which in turn preloads a pre-opening valve body precedes the main stage valve body, wherein the main stage valve body is supported on the valve seat surface in the closed operating position by the pre-opening valve.

Valve device and shock absorber

Provided is a valve device and a shock absorber that can prevent them from being in a failure state at the normal time and can freely set a passive valve even when both pressure control and passage opening/closing are performed by a solenoid valve. For this reason, the valve device includes a first passage and a second passage connected downstream of the pressure introducing passage, a solenoid valve that opens the first passage to control the upstream pressure and closes the second passage when energized, and that closes the first passage and opens the second passage when not energized, and a passive valve provided downstream of the solenoid valve in the second passage.

PROPORTIONAL VALVE

An electromagnetic and pilot-operated proportional valve with a valve slide unit () mounted in a valve housing () so as to be movable along an axial direction, which unit can be driven by an electromagnetic actuator assembly () provided at one axial end for the pilot-operated opening of a useful fluid inlet and/or outlet () of the valve housing as a response to energisation of a stationary coil () of the actuator assembly and interacts with mechanical force storage means (), more particularly is held in an unenergised stable axial position in the valve housing by said means, wherein the valve slide unit having a closure section () extending radially from one body section () of the valve slide unit () for sealing interaction with the useful fluid inlet or outlet () formed on a circumferential inner wall of the housing () interacts axially at one end, by means of the preferably cylindrical and/or coaxially extending body section (), with a stationary guide section () of the valve housing to form an axial sliding bearing () and, at the other end, is mounted with radial play (), wherein preferably ring-shaped sealing means () seal a circumferential section of the body section with radial play to the circumferential inner wall of the valve housing. 11210. An electromagnetically and pilot-operated proportional valve having a valve slide unit () mounted in a valve housing () so as to be movable along an axial direction ,{'b': 12', '16', '24, 'the valve slide unit () being drivable by an electromagnetic actuator assembly () provided at one axial end for the pilot-operated opening of a useful fluid inlet and/or outlet () of the valve housing in response to an energization of stationary coil means of the actuator assembly'}{'b': 48', '50, 'and interacting with mechanical force storage means (, )'}wherein{'b': 22', '30', '12', '24', '10', '40', '30, 'the valve slide unit which has a closure section () which extends in the radial direction from a body section () of the valve ...

Damping valve

A damping valve includes a valve seat member having a port and a first valve seat surrounding the port, a main valve body seated on or unseated from the first valve seat, the main valve body having a second valve seat oppositely to the valve seat member, a subsidiary valve body seated on or unseated from the second valve seat, a valve-body intermediate chamber provided between the main valve body and the subsidiary valve body in an inner circumferential side of the second valve seat, a restrictive passage that causes the port and the valve-body intermediate chamber to communicate with each other, the restrictive passage being configured to apply resistance to a flow of fluid passing therethrough, and a subsidiary valve body biasing means configured to bias the subsidiary valve body toward the main valve body.

HYDRAULIC VIBRATION DAMPER, IN PARTICULAR FOR A VEHICLE CHASSIS

A hydraulic vibration damper, in particular for a vehicle chassis, includes a cylinder tube for receiving a hydraulic fluid. A piston is axially movable within the cylinder tube along a cylinder tube axis and subdivides the cylinder tube into two working chambers. A piston rod is oriented parallel to the cylinder tube axis and is connected to the piston. At least one valve assembly for damping the piston movement in a direction of actuation is arranged at a fluid leadthrough. A bypass duct includes a sub-duct provided in addition to the fluid leadthrough between the two working chambers. A valve arrangement with continuously adjustable damping force is provided which regulates the throughflow through the fluid leadthrough and the sub-duct. The sub-duct includes a throttling mechanism, having a throttle, and a non-return valve. The throttle and the non-return valve of the sub-duct are arranged in series. 114.-. (canceled)15. A hydraulic vibration damper , in particular for a vehicle chassis , comprising:a cylinder tube shaped and sized to receive a hydraulic fluid,a piston that is axially movable within the cylinder tube along a cylinder tube axis and subdivides the cylinder tube into two working chambers,a piston rod that is oriented parallel to the cylinder tube axis and is connected to the piston,a valve assembly is arranged at a fluid leadthrough and is configured to damp the piston movement in a direction of actuation,a bypass duct that includes a sub-duct is provided in addition to the fluid leadthrough between the two working chambers, anda valve arrangement configured to generate a continuously adjustable damping force is configured to regulate the throughflow through the fluid leadthrough and the sub-duct,wherein the sub-duct comprises a throttling mechanism, the throttling mechanism having a throttle and a non-return valve arranged in series with respect to one another.16. The hydraulic vibration damper of claim 15 , wherein the non-return valve has a ...

DAMPING FORCE ADJUSTABLE SHOCK ABSORBER

[Problem] The present invention provides a damping force adjustable shock absorber capable of reducing manufacturing cost. 12-. (canceled)3. A damping force adjustable shock absorber comprising:a cylinder sealingly containing hydraulic fluid therein;a piston slidably and fittedly mounted inside the cylinder and partitioning an inside of the cylinder into two chambers, a one-side chamber and an opposite-side chamber;a piston rod having one end coupled with the piston and an opposite end protruding out of the cylinder;a first passage and a second passage establishing communication between the two chambers in the cylinder;a first main valve configured to generate a damping force against a flow of the fluid in the first passage that is generated when the piston in the cylinder moves to one side;a second main valve configured to generate a damping force against a flow of the fluid in the second passage that is generated when the piston in the cylinder moves to an opposite side; anda control valve configured to be driven by a solenoid and control the damping force that is generated when the piston in the cylinder moves to the one side and the opposite side,wherein the first main valve includesa damping valve configured to generate the damping force by restricting the flow of the hydraulic fluid flowing via the first passage when the piston moves to the one side,a back-pressure chamber configured to apply an inner pressure to the damping valve in a valve-closing direction, anda back-pressure chamber introduction passage configured to introduce the hydraulic fluid from a chamber on an upstream side toward a back-pressure chamber side,wherein the control valve includesa tubular case member slidably containing a plunger configured to be driven by the solenoid therein, the tubular case member being opened on one end side thereof,a valve seat member including an annular valve seat provided on a side facing the opening, the valve seat having an inner peripheral side in ...

REGULABLE VIBRATION DAMPER

A regulable vibration damper may comprise a cylinder barrel that contains hydraulic fluid in a sealed manner, a piston that can be moved axially within the cylinder barrel along a cylinder barrel axis and that subdivides the cylinder barrel into two working chambers, a piston rod that is oriented parallel to the cylinder barrel axis and is connected to the piston, a valve assembly arranged at a fluid feed through to damp piston movement in an actuating direction, and a bypass duct between the two working chambers. The bypass duct may comprise a first throughflow cross section for a first throughflow direction, wherein the first throughflow cross section differs from a second throughflow cross section for a second throughflow direction. Further, the bypass duct may be formed, at least in part, by an outflow passage that is arranged on an exit side of a pilot valve for adjusting pilot pressure. 15.-. (canceled)6. A regulable vibration damper comprising:a cylinder barrel that contains hydraulic fluid in a sealed manner;a piston that is movable axially within the cylinder barrel along a cylinder-barrel axis and that subdivides the cylinder barrel into two working chambers;a piston rod that is oriented parallel to the cylinder-barrel axis and that is connected to the piston;a valve assembly disposed at a fluid feed-through of the piston to damp piston movement in an actuating direction; anda bypass duct disposed between the two working chambers, the bypass duct comprising a first throughflow cross section for a first throughflow direction, wherein the first throughflow cross section differs from a second throughflow cross section for a second throughflow direction, wherein the bypass duct comprises an outflow passage that is disposed on an exit side of a pilot valve for adjusting a pilot pressure.7. The regulable vibration damper of further comprising a valve arrangement disposed in the outflow passage claim 6 , wherein the valve arrangement comprises an outflow-passage ...

LOAD DEPENDENT DAMPER FOR A VEHICLE SUSPENSION SYSTEM

A valve assembly for a vehicle suspension system includes a valve body, a first flow controller, a first plunger, a second flow controller, and a second plunger. The valve body defines a first inlet port, a first outlet port, a first chamber connected to the first inlet port and the first outlet port, a second chamber, a second inlet port, a second outlet port, a third chamber connected to the second inlet port and the second outlet port, and a fourth chamber. The first flow controller is positioned within the first chamber. The first plunger is positioned between the first chamber and the second chamber. The second flow controller is positioned within the third chamber. The second plunger is positioned between the third chamber and the fourth chamber. 1. A valve assembly for a vehicle suspension system , the valve assembly comprising: a first inlet port;', 'a first outlet port;', 'a first chamber connected to the first inlet port and the first outlet port;', 'a second chamber;', 'a second inlet port;', 'a second outlet port;', 'a third chamber connected to the second inlet port and the second outlet port; and', 'a fourth chamber;, 'a valve body defininga first flow controller positioned within the first chamber;a first plunger positioned between the first chamber and the second chamber;a second flow controller positioned within the third chamber; anda second plunger positioned between the third chamber and the fourth chamber.2. The valve assembly of claim 1 , wherein the valve body defines a spring port configured to receive pressurized gas claim 1 , wherein the second chamber and the fourth chamber are fluidly coupled together claim 1 , and wherein the second chamber and the fourth chamber are both fluidly coupled to the spring port.3. The valve assembly of claim 1 , wherein the valve body defines a first spring port and a second spring port claim 1 , wherein each of the first spring port and the second spring port is configured to receive pressurized gas claim 1 ...

VALVE ARRANGEMENT

A valve arrangement comprising a main valve member being axially movably arranged in a valve housing and arranged to interact with a main valve seat of the valve housing in order to restrict or regulate a pressure in a main fluid flow in response to a pilot pressure acting on the main valve member. A control valve member is axially movable within the main valve member in response to an actuating force acting on the control valve member. A pilot valve member is axially movable within the control valve member, and is arranged to interact with a pilot valve seat of the control valve member to restrict a pilot fluid flow out from a pilot chamber. The pilot valve member is resiliently loaded towards the pilot valve seat relative the main valve member or the valve housing, such that the resilient loading on the pilot valve member is adjustable in response to the actuating force. 11. A valve arrangement () for a shock absorber , said valve arrangement comprising:{'b': 2', '7', '8, 'a valve housing () comprising a first and a second port (, );'}{'b': '3', 'a pilot chamber () being in fluid communication with said first and/or second port, wherein a pilot pressure (Pp) is defined by a hydraulic pressure in said pilot chamber;'}{'b': 4', '9', '10, 'a main valve member () axially movably arranged in said valve housing and arranged to interact with a main valve seat () of said valve housing in order to restrict a main fluid flow () between said first and second ports in response to said pilot pressure acting on said main valve member;'}{'b': '5', 'a control valve member () axially movable within said main valve member in response to an actuating force acting on said control valve member;'}{'b': 6', '17', '21, 'a pilot valve member () axially movable within said control valve member, said pilot valve member being arranged to interact with a pilot valve seat () of said control valve member to restrict a pilot fluid flow () out from said pilot chamber;'}{'b': 6', '17', '4', '2, ' ...

Damping force variable valve

A damping force variable valve includes a case accommodating working fluid, a housing, a first fluid chamber, a second fluid chamber, and a valve element provided at the housing. The valve element includes a first end portion configured to be in contact with a first contact portion formed at a part of the housing, the valve element configured to perform reciprocating motion within an inner space portion of the housing. The damping force variable valve includes an actuator provided at the housing and including a second contact portion configured to be in contact with a second end portion of the valve element. One of the first end portion, the first contact portion, the second end portion and the second contact portion is provided with a communication portion including an opening. An opening area of the opening changes in accordance with a pressing force from the actuator.

A VALVE ARRANGEMENT AND METHOD FOR CONTROLLING A PILOT PRESSURE IN A VALVE ARRANGEMENT

A valve arrangement and a method for controlling a pilot pressure in the valve arrangement for a shock absorber, wherein the valve arrangement comprises a control valve member movable in an axial direction relative a main valve member, a pilot chamber being in fluid communication with a first port and/or a second port. The arrangement and method comprise, during an active control mode, pressure relieving (AM S) the control valve member and applying an actuating force (AM S) for controlling the pilot pressure (Pp). Further, during a failsafe control mode, controlling (FM S) the control valve member by means of the pilot pressure (P). And finally, during both the active control mode and the failsafe control mode restricting (S) the pilot fluid flow (PF, PF) by at least one common valve seat (R). 115.-. (canceled)16. A valve arrangement for a shock absorber comprising:a valve housing including a first and a second port;{'sub': 'P', 'a pilot chamber in fluid communication with one of the first and second port, wherein a pilot pressure (P) is defined by a hydraulic pressure in the pilot chamber;'}a main valve member axially movably in the valve housing and being arranged to interact with a main valve seat of the valve housing in order to restrict a main fluid flow between the first and second ports in response to the pilot pressure acting on the main valve member;a control valve member being movable in an axial direction relative to the main valve member and being resiliently loaded in a direction towards the pilot chamber,{'sub': C', 'R', 'C', 'R', 'C', 'R, 'b': '2', 'wherein the valve arrangement is configured so that during an active control mode, a pilot fluid flow (PF, PF) is controlled in response to an actuating force acting on the control valve member, during a failsafe control mode, the pilot fluid flow (PF, PF) is controlled in response to the pilot pressure acting on the control valve member, and in that the pilot fluid flow (PF, PF) is restricted by at least ...

METHOD AND APPARATUS FOR AN ADJUSTABLE DAMPER

A vehicle suspension damper is described. The vehicle suspension damper includes: a pilot valve assembly; a primary valve; and an adjuster, wherein the pilot valve assembly meters fluid to the primary valve, and the adjuster moves the primary valve. 1a primary valve; 'an adjustable pilot spool configured for controlling a pressure inside said primary valve;', 'a pilot valve assembly, said pilot valve assembly comprisingan externally-adjustable adjuster, wherein said pilot valve assembly meters fluid to said primary valve, and movement of said externally-adjustable adjuster varies an effective orifice size of said adjustable pilot spool, said externally-adjustable adjuster disposed at a top cap of said vehicle suspension damper; anda set of shims coupled to said primary valve, wherein a position of said adjustable pilot spool corresponds to an increase of pressure inside said primary valve and an increase of an axial force on said set of shims by said primary valve.. A vehicle suspension damper comprising: This application is a continuation application of and claims the benefit of co-pending U.S. patent application Ser. No. 15/599,469 filed on May 19, 2017, entitled “METHOD AND APPARATUS FOR AN ADJUSTABLE DAMPER”, having Attorney Docket No. FOX-P10-02-12-US.DIV.CON, and assigned to the assignee of the present application, and is hereby incorporated by reference in its entirety herein.The U.S. patent application Ser. No. 15/599,469 is a continuation application of and claims the benefit of U.S. patent application Ser. No. 14/690,267 filed on Apr. 17, 2015, now U.S. Pat. No. 9,663,181, entitled “METHOD AND APPARATUS FOR AN ADJUSTABLE DAMPER”, having Attorney Docket No. FOX-P10-02-12-US.DIV, and assigned to the assignee of the present application, and is hereby incorporated by reference in its entirety herein.The U.S. patent application Ser. No. 13/843,704 is a divisional application of and claims the benefit of U.S. patent application Ser. No. 13/843,704 filed on Mar. ...

CONTROLLABLE SHOCK ABSORBER

A controllable shock absorber may include a cylinder tube with hydraulic fluid, a movable piston that divides the cylinder tube into two working spaces, and a piston rod connected to the piston. Two fluid leadthroughs in the piston may connect the two working spaces. Valve assemblies for damping piston movement in actuating directions may be arranged on the leadthroughs. Each valve assembly may have a pilot control chamber and a valve plate movable between open and closed positions. The valve plate can be prestressed into the closed position by pressure loading the pilot control chamber. Pressures in the pilot control chambers can be set by a pilot control valve having a valve body that is movable between open and closed positions. An outflow cross section between the pilot control chambers and the working spaces is settable. First and second outflow paths may adjoin the valve body on the outflow side, the first outflow path being closed when an actuator for actuating the position of the valve body is inactive. A closing element separate from the valve body may be provided for closing the first outflow path.” 110.-. (canceled)11. A controllable shock absorber comprising:a cylinder tube that contains hydraulic fluid in a sealed manner, the cylinder tube extending along a cylinder tube axis;a piston that is movable axially within the cylinder tube along the cylinder tube axis, the piston dividing the cylinder tube into two working spaces, wherein the piston comprises a first fluid leadthrough and a second fluid leadthrough that connect the two working spaces;a piston rod that is connected to the piston and is parallel to the cylinder tube axis;a first valve assembly disposed on the first fluid leadthrough for damping movement of the piston in a first actuating direction; a valve plate that is seated on a valve seat in a closed valve position and spaced apart at least partially from the valve seat in an open valve position, and', 'a pilot control chamber, wherein the ...

Damping Valve

A damping valve includes a valve body with a stepped opening for receiving a preloading spring which acts on a tension rod at which is arranged a valve disk which at least partially closes a flow-out orifice of a flow channel which connects two opposite valve body sides to one another, and, in addition to the preloading spring force, a damping force which counteracts a swiveling movement of the valve disk acts on the tension rod. The additional damping force is formed by a displacer on the tension rod side. The display together with a portion of the stepped opening, forms a restrictor chamber. 110-. (canceled)11. A damping valve comprising:a valve body having opposite valve body sides, a stepped opening and at least one flow channel having a flow-out orifice and interconnecting said opposite valve body sides;a tension rod extending through said vale body;a valve disk arranged on said tension rod at least partially closing said flow-out orifice;a preloading spring disposed within said stepped opening acting on said tension rod with a preloading spring force and wherein, in addition to said preloading spring force, a damping force which counteracts a swiveling movement of said valve disk acts on said tension rod; anda displacer constructed to form said additional damping force on the tension rod side and forming a restrictor chamber together with said stepped opening.12. The damping valve according to claim 11 , wherein said displacer is formed by a disk arrangement.13. The damping valve according to claim 12 , wherein said disk arrangement forms a pressure relief valve.14. The damping valve according to claim 11 , wherein said at least one flow channel runs outside of said stepped opening.15. The damping valve according to claim 14 , wherein said at least one flow channel runs at least partially obliquely with respect to said tension rod.16. The damping valve according to claim 11 , wherein said flow channel extends inside of a cross-sectional area of said stepped ...

DAMPING FORCE CONTROL TYPE SHOCK ABSORBER

PROBLEM 1. A damping force control type shock absorber comprising a cylinder having a hydraulic fluid sealed therein , a piston slidably fitted in the cylinder , a piston rod connected to the piston and extended to an outside of the cylinder , and a damping force generating mechanism generating a damping force by controlling a flow of hydraulic fluid induced by sliding movement of the piston in the cylinder;the damping force generating mechanism including a normally-open solenoid valve operated by energization of a coil to control the flow of hydraulic fluid, and a fail-safe valve provided upstream or downstream of the solenoid valve, the fail-safe valve being movable independently of the solenoid valve;the fail-safe valve having a valving element movable between a normal position where the valving element opens a flow path of the hydraulic fluid and a fail-safe position where the valving element controls the flow of hydraulic fluid to generate a damping force, the fail-safe valve further having a seat part with respect to which the valving element selectively seats and unseats, a guide part movably guiding the valving element, an urging member urging the valving element toward the fail-safe position, and a magnetic attraction part magnetically attracting the valving element through a magnetic field of the coil to move the valving element to the normal position;the seat part and the guide part being made of a non-magnetic material not forming a magnetic path through the magnetic field of the coil, and the valving element and the magnetic attraction part being made of a magnetic material forming a magnetic path through the magnetic field of the coil.2. The damping force control type shock absorber of claim 1 , wherein the solenoid valve has a valving element moved by energization of the coil in a same direction as the valving element of the fail-safe valve so as to be disposed in the normal position.3. The damping force control type shock absorber of claim 1 , ...

Method and apparatus for an adjustable damper

A vehicle suspension damper is described. The vehicle suspension damper includes: a pilot valve assembly; a primary valve; and an adjuster, wherein the pilot valve assembly meters fluid to the primary valve, and the adjuster moves the primary valve.

Damping Valve Comprising A Pressure Relief Valve

An adjustable damping valve ( 12 ) includes a pressure space ( 22 c ) for controlling the damping valve ( 12 ), which pressure space ( 22 c ) is arranged inside the damping valve ( 12 ) and is connected to a further space ( 20 ) via at least one choke orifice ( 30 ) for the flow of damping medium, and the pressure space ( 22 c ) is operatively connected to the further space ( 20 ) via a pressure relief valve ( 32 ).

DAMPING FORCE VARIABLE SHOCK ABSORBER

There is provided a compact damping force variable shock absorber capable of implementing different adjustments for a compression-side stroke and an extension-side stroke as initial settings. A damping force variable device in one embodiment includes: a main valve that opens and closes to control flow of oil caused by sliding of a piston in a cylinder, thereby generating damping force; a pilot chamber into which a portion of the flow of the oil is introduced so that internal pressure is applied to the main valve in a valve-closing direction; a pilot valve that opens and closes to adjust the internal pressure of the pilot chamber; and a communication passage that communicates the pilot chamber with a rod-side oil chamber or a piston-side fluid chamber. 1. A damping force variable shock absorber comprising:a cylinder in which fluid is enclosed;a piston slidably fitted into the cylinder;a piston rod having one end connected to the piston and the other end extended outside the cylinder;a rod-side fluid chamber partitioned by the piston and provided closer to the other end in an axial direction of the cylinder than the piston;a piston-side fluid chamber provided closer to one end in the axial direction of the cylinder than the piston;a damping force variable device that controls flow of the fluid enclosed in the cylinder so that a damping force can be varied;an outer tube provided on a vehicle body side, the other end of the piston rod being attached to the outer tube;an inner tube as the cylinder being slidably inserted in an inner circumference of the outer tube, the piston being slidably provided in an inner circumference of the inner tube;a first bush provided on an inner circumference of the outer tube on an axle side;a second bush provided on an outer circumference of the inner tube on the vehicle body side;an annular fluid chamber surrounded by the outer tube, the inner tube, the first bush, and the second bush, and a cross-sectional area of the piston rod being ...

VALVE ARRANGEMENT WITH IMPROVED FAILSAFE OPERATION

A valve arrangement controls a flow of damping medium in a shock absorber. A radial column is provided with an axial failsafe flow such that the fail safe flow is not dependent on the exact axial position of the control valve member for creating the fail safe restriction, and less turbulence arise affecting the axial position of the control valve member. Thereby a valve arrangement is provided which has a more stable and reliable failsafe operation, resulting in a more dependable valve arrangement. 1. A valve arrangement for a shock absorber , said valve arrangement comprising:a valve housing comprising a first and a second port;a pilot chamber being in fluid communication with said first and/or second port, wherein a pilot pressure is defined by a hydraulic pressure in said pilot chamber;a main valve member being axially movably arranged in said valve housing and being arranged to interact with a main valve seat of said valve housing in order to restrict a main fluid flow between said first and second ports in response to said pilot pressure acting on said main valve member; anda control valve member being movable in an axial direction relative said main valve member in response to an actuating force acting on said control valve member, said control valve member being resiliently loaded in an opposite direction to said actuating force by means of a biasing member,wherein said valve housing further comprises a geometrically defined axial stop for preventing said control valve member from moving axially past said stop in the biasing direction, andwherein the interface between said control valve member and said main valve member comprises a recess so that, when said control valve member is held against the axial stop by means of said biasing member, said recess forms a radial column between the control valve member and the main valve member allowing an axial failsafe flow of the damping medium, wherein the failsafe flow restriction is determined by the width of the ...

Valve arrangement

A valve arrangement controls a flow of damping medium in a shock absorber. Pressurized damping fluid acts around a whole circumference of the slidable valve member and the impact of flow forces on the slidable valve member is minimized, which vastly decrease the disturbing axial forces and thereby achieves a more dependable valve arrangement with a reliable operation.

METHOD AND APPARATUS FOR AN ADJUSTABLE DAMPER

A vehicle suspension damper is described. The vehicle suspension damper includes: a pilot valve assembly; a primary valve; and an adjuster, wherein the pilot valve assembly meters fluid to the primary valve, and the adjuster moves the primary valve. 1 'an adjustable pilot spool configured for controlling a pressure inside said primary valve;', 'a pilot valve assembly, said pilot valve assembly comprisinga primary valve;an adjuster, wherein said pilot valve assembly meters fluid to said primary valve, and said adjuster moves said primary valve; anda set of shims coupled to said primary valve, wherein a position of said adjustable pilot spool corresponds to an increase of pressure inside said primary valve and an increase of an axial force on said set of shims by said primary valve.. A vehicle suspension damper comprising: This application is a continuation application of and claims the benefit of co-pending U.S. patent application Ser. No. 14/690,267 filed on Apr. 17, 2015, entitled “METHOD AND APPARATUS FOR AN ADJUSTABLE DAMPER”, having Attorney Docket No. FOX-P10-02-12-US.DIV, and assigned to the assignee of the present application, and is hereby incorporated by reference in its entirety herein.The U.S. patent application Ser. No. 13/843,704 is a divisional application of and claims the benefit of U.S. patent application Ser. No. 13/843,704 filed on Mar. 15, 2013, now U.S. Pat. No. 9,033,122, entitled “METHOD AND APPARATUS FOR AN ADJUSTABLE DAMPER”, having Attorney Docket No. FOX-P10-02-12-US, and assigned to the assignee of the present application, and is hereby incorporated by reference in its entirety herein.The U.S. patent application Ser. No. 13/843,704 claims the benefit of and claims priority of U.S. provisional patent application Ser. No. 61/709,041, filed on Oct. 2, 2012, entitled “METHOD AND APPARATUS FOR AN ADJUSTABLE DAMPER” by Ericksen et al., now expired, assigned to the assignee of the present application, having Attorney Docket No. FOX-P10-02-12.PRO ...

LOAD DEPENDENT DAMPER FOR A VEHICLE SUSPENSION SYSTEM

A valve assembly includes a housing, a flow controller, and a piston. The housing defines an inlet port, an outlet port, a flow path extending between the inlet port and the outlet port, and a pilot chamber configured to be in fluid communication with a pilot. The flow controller is positioned along the flow path. The piston is positioned to separate the pilot chamber from the flow path. The piston includes a first end in fluid communication with the pilot chamber and an opposing second end positioned to engage the flow controller with a pilot force that varies based on a pressure at the pilot.

Shock absorber

A shock absorber includes a cylinder in which oil is sealed, a piston slidably fitted into the cylinder, a piston rod connected to the piston and extending to the outside of the cylinder, and a damping force generating apparatus controlling a flow of the oil generated by the sliding of the piston inside the cylinder. The damping force generating apparatus includes a valve body generating a damping force by being opened and closed on a flow path in which the oil flows, a valve seat closing the flow path when the valve body is seated, and an actuator generating thrust to the valve body in a valve closing direction. The valve seat has a first elastic body which is elastically deformable in the valve closing direction of the valve body.

CONTROLLABLE VIBRATION DAMPER FOR MOTOR VEHICLES

A controllable vibration damper may include a cylinder tube with hydraulic fluid, a piston movable axially within the cylinder tube along an axis and that divides the cylinder tube into two working spaces, a piston rod parallel to the cylinder tube axis and connected at one end to the piston, fluid passages from one working space into another working space, a first valve subassembly on a first fluid passage for damping piston movement in a first direction, and a second valve subassembly on a second fluid passage for damping piston movement in a second direction. Each valve subassembly may include a valve disk seated on a valve seat in a closed position and spaced apart from the valve seat in an open position, as well as a pilot chamber containing an adjustable pressure that pushes the valve disk into the closed position. One of the pilot chambers may be delimited by a base, a cylindrical side wall fixed relative to the base and arranged coaxially with the cylinder tube axis, and a dimensionally stable cover that is held radially within the cylindrical side wall and can be moved parallel to the cylinder tube axis. 113.-. (canceled)14. A controllable vibration damper comprising:a cylinder tube that has hydraulic fluid sealed off therein, the cylinder tube having a cylinder tube axis;a piston axially movable within the cylinder tube along the cylinder tube axis, the piston dividing the cylinder tube into two working spaces;a piston rod aligned parallel to the cylinder tube axis and connected at one end to the piston;first and second fluid passages extending between the two working spaces in the piston;a first valve subassembly for damping movement of the piston in a first actuating direction, wherein the first valve subassembly is disposed on the first fluid passage; a valve disk that is seated on a valve seat in a closed valve position so as to cover the respective fluid passage and spaced apart from the valve seat in an open valve position, and', 'a pilot chamber ...

TWIN TUBE DAMPER INCLUDING A PRESSURE RATE SENSITIVE SYSTEM

A twin tube damper assembly includes a main tube defining a fluid chamber. An external tube extends about the main tube defining a compensation chamber therebetween. A piston, slidably disposed in the fluid chamber, divides the fluid chamber into a compression chamber and a rebound chamber. A rod guide is disposed in the rebound chamber, attached to the main tube and the external tube, defining at least one channel in fluid communication with the rebound and compensation chambers. A piston rod extends through the rod guide and is attached to the piston. A pressure rate sensitive system, disposed in the rebound chamber, is attached to the rod guide in fluid communication with the at least one channel, the rebound chamber, and the compensation chamber for regulating the working fluid flow through the rod guide between the rebound and compensation chambers during compression and rebound strokes. 1. A twin tube damper assembly comprising:a main tube disposed on a center axis and extending between a first end and a second end and defining a fluid chamber extending therebetween for containing a working fluid;an external tube disposed on said center axis spaced from said main tube and extending about said main tube between a closed end adjacent to said first end and an opened end adjacent to said second end and defining compensation chamber between said main tube and said external tube;a piston slidably disposed in said fluid chamber dividing said fluid chamber into a compression chamber between said first end and said piston and a rebound chamber between said piston and said second end;a rod guide disposed in said rebound chamber and attached to said second end of said main tube and said opened end of said external tube and defining at least one channel disposed in fluid communication between said rebound chamber and said compensation chamber to allow the working fluid to flow between said fluid chamber and said compensation chamber;a piston rod extending along said ...

Damping force controlling shock absorber

A damping force controlling shock absorber can generate a hard damping force through disk slits during a low speed operation by adding a disk valve to a chamber, can constantly maintain a pressure of a back pressure compartment by opening a disk valve and discharge the pressure of the back pressure compartment to the outside when the pressure of the back pressure compartment is at a predetermined level or more, thereby generating a harder damping force during a low speed operation, and can adjust a disk valve open pressure during a medium/high speed operation so as to prevent the durability of the equipment from being lowered by an excessive increase of a pressure and prevent an abnormal operation from occurring.

Method and apparatus for an adjustable damper

A vehicle suspension damper is described. The vehicle suspension damper includes: a pilot valve assembly; a primary valve; and an adjuster, wherein the pilot valve assembly meters fluid to the primary valve, and the adjuster moves the primary valve.

Adjustable vibration damper for motor vehicles

Patent DE3609862C2

Orifice valve

阻尼阀包括：阀座构件，其具有口；阀芯，其用于开闭口；背压室，其利用内部压力向阀座构件侧对阀芯施力；先导通路，其用于对口的上游侧的压力减压并将该减压后的压力向背压室引导；以及先导阀，其设于先导通路的中途，用于控制背压室内的压力，先导阀包括：先导阀座构件，其具有阀收纳筒和先导阀座，该阀收纳筒为筒状，设有连通内外并且通到口的透孔，该先导阀座为环状，设于阀收纳筒的端部；以及先导阀芯，其具有大径部、小径部和凹部，该小径部以滑动自如的方式插入阀收纳筒内，该凹部设在大径部与小径部之间，与透孔相对，通过使大径部的端部离开和落位于先导阀座来打开和关闭先导通路。

Vehicle with buffer

一种悬架系统，其具备：可自行的车身，其设有前轮和后轮；机械式衰减力可变缓冲器，其配置于所述车身和前轮之间，衰减力机械地变化；衰减力调整式缓冲器，其配置于所述车身和后轮之间，能够通过促动器调整衰减力。

Adjustable shock absorbers for vehicles

차량용 조절 가능한 쇽 업소버 및 밸브시트(valve seat)가 구비되는 감쇠밸브에 관한 것으로서, 상기 쇽 업소버는 감쇠액을 수용하는 실린더, 이 안에서 밀봉하면서 침지하는, 축방향으로 변위될 수 있도록 배열되는 피스톤 로드, 상기 피스톤 로드에 고정되며 상기 실린더를 두 개의 작동실로 분할하는 감쇠 피스톤을 가지고, 상기 감쇠밸브는 축방향으로 변위되는 밸브보디를 통하여 주단계(主段階)의 감쇠채널의 효과적인 횡단면을 제어하고, 이때 예비 조종부(pilot control)에 의해서 밸브보디의 한 방향에 압력이 가해지며, 상기 밸브보디는 이와 대치되는 방향에서 직접 조종된다.

Damping force controlling shock absorber

본 발명에 따른 감쇠력 가변식 쇽업소버는, 실린더의 내부에서 압축 및 인장 행정을 하는 피스톤로드와, 상기 피스톤로드에 결합되어 실린더의 내부를 압축챔버와 인장챔버로 구분하며 메인유로가 상하로 관통 형성되는 피스톤과, 상기 피스톤로드와 상기 피스톤의 사이에서 자기력에 의해 스풀을 승강시키는 솔레노이드 밸브를 갖는 감쇠력 가변식 쇽업소버에 있어서, 상기 피스톤의 상하면에 각각 결합되며, 상기 메인유로와 연통된 연결 유로가 상하로 관통 형성되는 리테이너와, 상기 리테이너들의 대응되는 반대면에 각각 배치되어 상호 간의 대응면에 배압챔버가 형성되며, 상기 배압챔버와 외부를 연통시키기 위한 배압 유로가 상하로 관통 형성되는 하우징과, 상기 리테이너들과 상기 하우징들의 사이에서 상기 연결 유로와 밀착되어 메인 감쇠력을 발생시키는 파일럿 밸브와, 상기 리테이너들과 상기 하우징들 및 상기 파일럿 밸브에 관통 결합되어 상기 스풀의 외부를 감싸는 상태로 안내하는 스풀 가이드를 포함하며, 상기 파일럿 밸브는, 하드 모드시 상기 연결 유로와 상기 배압챔버를 통한 유체가 외부로 배출되도록 슬릿이 상하로 관통 형성되고, 상기 스풀 가이드는 소프트 모드시 상기 슬릿과 상기 배압챔버를 통한 유체가 내부와 상기 밸브 유로를 통해 외부로 배출되도록 바이패스 통로가 형성된다. The damping force variable shock absorber according to the present invention includes a piston rod that performs compression and tension strokes inside a cylinder, and is coupled to the piston rod to divide the inside of the cylinder into a compression chamber and a tension chamber, and a main flow passage is formed through vertical In the damping force variable shock absorber having a piston to be used and a solenoid valve for raising and lowering a spool by magnetic force between the piston rod and the piston, each coupled to the upper and lower surfaces of the piston, and a connection passage communicating with the main passage A housing comprising: a retainer vertically penetrating; A pilot valve that is in close contact with the connection flow path between the retainers and the housings to generate a main damping force, and a spool that is through-coupled to the retainers, the housings, and the pilot valve to surround the outside of the spool a guide, wherein the pilot valve has a slit penetrating vertically so that the fluid through the connection passage and the back pressure chamber is discharged to the outside in hard mode, and the spool guide connects the slit and the back pressure chamber in soft mode A bypass passage is formed so that the passing fluid is discharged to the outside through the inside and the valve ...

Solenoid valve

电磁阀包括：主阀，其具有阀座和主阀芯，该主阀芯用于打开或关闭主流路；先导流路，其是自主流路分支出来的；节流孔，其设于先导流路；背压室，其利用内部压力向关闭主阀芯的方向对主阀芯施力；先导阀，其用于控制背压室内的压力；以及螺线管，其用于调节先导阀的开阀压力。以主阀的开阀时刻晚于先导阀的开阀时刻的方式在主阀的开阀时刻与先导阀的开阀时刻之间设有时间差。

Electromagnetic and piloted proportional valve

Die Erfindung betrifft ein elektromagnetisch und vorgesteuert betätigtes Proportionalventil mit als Reaktion auf eine Bestromung von elektromagnetisch wirkenden Aktuatormitteln (36) in einem Vorsteuerventilgehäuse (16) bewegbaren Vorsteuerventilschiebermitteln (30) zum Öffnen und Schließen eines ersten (18) und eines zweiten (24), jeweils im Vorsteuerventilgehäuse ausgebildeten Ein- und Auslasses für ein Vorsteuerfluid, wobei dem ersten und dem zweiten Ein- und Auslass ein durch das Vorsteuerfluid betätigbares Hauptventil (12) nachschaltbar vorgesehen ist, wobei das Vorsteuerventilgehäuse zwischen dem ersten und dem zweiten Ein- und Auslass bidirektional von dem Vorsteuerfluid so durchströmbar ausgebildet ist, dass in einem ersten Vorsteuerbetriebsmodus das Vorsteuerfluid durch den ersten Ein- und Auslass eintreten und durch den zweiten Ein- und Auslass mit einer Rückschlagventilfunktionalität (26) austreten kann und in einem zweiten Vorsteuerbetriebsmodus das Vorsteuerfluid durch den zweiten Ein- und Auslass eintreten und durch den ersten Ein- und Auslass mit einer Rückschlagventilfunktionalität (20) austreten kann, wobei das nachgeschaltete Hauptventil durch den ersten und den zweiten Vorsteuerbetriebsmodus in verschiedene Hauptventilbetriebsmodi gesteuert werden kann.

Adjustable vibration damper

Regelbarer Schwingungsdämpfer (1), insbesondere für ein Fahrzeugfahrwerk, umfassend ein Zylinderrohr (10), das ein darin abgedichtet aufgenommenes Hydraulikfluid aufweist, einen Kolben (2), der innerhalb des Zylinderrohres (10) entlang einer Zylinderrohrachse (A) axial bewegbar ist und der das Zylinderrohr (10) in zwei Arbeitsräume (11, 21) unterteilt, eine Kolbenstange (3), die parallel zur Zylinderrohrachse (A) ausgerichtet und mit dem Kolben (2) verbunden ist, wobei zumindest eine Ventilbaugruppe (13, 23) zur Dämpfung der Kolbenbewegung in einer Betätigungsrichtung (R1, R2) an einer Fluiddurchführung (12, 22) angeordnet ist, wobei zusätzlich zu den Fluiddurchführungen (12, 22) zwischen den beiden Arbeitsräumen zumindest ein Bypasskanal (47) vorgesehen ist, der für eine erste Durchflussrichtung (B1) einen ersten Durchflussquerschnitt aufweist, der unterschiedlich ist zu einem zweiten Durchflussquerschnitt für eine zweite Durchflussrichtung (B2), wobei der Bypasskanal (47) zumindest teilweise durch zumindest einen Abflussdurchgang (38, 34) gebildet ist, der ablaufseitig eines Vorsteuerventils (31), welches zur Einstellung eines Vorsteuerdrucks dient, angeordnet ist, dadurch gekennzeichnet, dass in zumindest einem Abflussdurchgang (38, 34) eine Ventilanordnung vorgesehen ist, die eine Abflussdurchgangbypassdrossel (45, 46) sowie ein parallel dazu geschaltetes Einwegeventil (39, 36) umfasst, wobei die Sperrrichtung (S1, S2) des Einwegeventils (39, 36) aus demjenigen Arbeitsraum (11, 21), in welchen der Abflussdurchgang (38, 34) mündet, in den Bypasskanal (47) hinein weist.. Controllable vibration damper (1), in particular for a vehicle chassis, comprising a cylinder tube (10) having a hydraulic fluid received therein sealed, a piston (2) which is axially movable within the cylinder tube (10) along a cylinder tube axis (A) and the cylinder tube (10) divided into two working spaces (11, 21), a piston rod (3) which is aligned parallel to the cylinder tube axis (A) and ...

Hydraulic shock absorber

액압 완충기는, 신장측실과 압축측실을 연통하는 신장측 통로와 압축측 통로와, 신장측 통로를 개폐하는 신장측 밸브체와, 압축측 통로를 개폐하는 압축측 밸브체와, 신장측 밸브체를 가압하는 신장측 배압실과, 압축측 밸브체를 가압하는 압축측 배압실과, 신장측 저항 요소를 통해 신장측 배압실에 연통됨과 함께 압축측 저항 요소를 통해 압축측 배압실에 연통되는 연통로와, 신장측실과 압축측 배압실을 연통하는 신장측 압력 도입 통로와, 압축측실과 신장측 배압실을 연통하는 압축측 압력 도입 통로와, 연통로에 접속되는 조정 통로와, 조정 통로에 설치되어 조정 통로의 상류 압력을 제어하는 전자 압력 제어 밸브를 구비하고, 신장측 배압실의 압력에 의해 신장측 밸브체를 가압하는 신장측 하중의 쪽이, 압축측 배압실의 압력에 의해 압축측 밸브체를 가압하는 압축측 하중보다도 크다. The hydraulic shock absorber includes an elongate side passage and a compression side passage which communicate the elongate chamber and the compression chambers, an elongated side valve body for opening and closing the elongated side passage, a compression side valve body for opening and closing the compression side passage, A compression-side backpressure chamber for pressurizing the compression-side valve element; a communication passage communicating with the extension-side backpressure chamber through the expansion-side resistance element and communicating with the compression-side backpressure chamber through the compression-side resistance element; A compression side pressure introduction passage communicating between the compression chamber and the extension side back pressure chamber; an adjustment passage connected to the communication passage; Side pressure of the compression-side back-pressure chamber is controlled by the pressure of the compression-side back-pressure chamber, and the pressure of the compression- Larger than the compression-side load to force the body.

Damping force adjustable shock absorber

Damping force control type hydraulic shock absorber

실린더내의 피스톤의 미끄럼이동으로 발생하는 유압유체의 흐름은 신장행정 압력제어밸브 및 압축행정 압력제어밸브에 의해 직접적으로 제어된다. 동시에, 배압챔버내의 압력은 변하여, 메인 디스크밸브의 밸브개방압력을 조절하게 된다. 이것은 넓은 범위에 걸쳐 감쇠력의 제어를 가능하게 해 준다. 각각의 신장행정 압력제어밸브 및 압축행정 압력제어밸브에서, 슬라이더의 계단부분과 밸브챔버내의 서브 디스크밸브 사이의 수압면적내의 차이에 의하여 슬라이더내에 추진이 발생한다. 밸브개방압력은 슬라이더의 추진와 비례 솔레노이드의 추진 사이의 밸런스에 따라 제어된다. 밸브챔버내의 수압면적내의 차이를 감소시킴으로써, 비례 솔레노이드에 인가되는 하중을 줄일 수 있다. The flow of hydraulic fluid generated by the sliding of the piston in the cylinder is directly controlled by the expansion stroke pressure control valve and the compression stroke pressure control valve. At the same time, the pressure in the back pressure chamber is changed to adjust the valve opening pressure of the main disk valve. This makes it possible to control the damping force over a wide range. In each of the expansion stroke pressure control valves and the compression stroke pressure control valves, propulsion occurs in the slider due to the difference in the hydraulic pressure area between the stepped portion of the slider and the sub disc valve in the valve chamber. The valve opening pressure is controlled according to the balance between propulsion of the slider and propulsion of the proportional solenoid. By reducing the difference in the hydraulic pressure area in the valve chamber, the load applied to the proportional solenoid can be reduced.

Damping force controls amortisseur

一种阻尼力控制减震器，其包括：保持部，其分别被连接至活塞的顶面和底面、与主通道连通的连接通道被形成以垂直穿过保持部；壳体，其被分别设置在保持部的相应的相对表面上以在壳体的相互对应表面上形成导向室，形成导向通道以垂直穿过壳体以便将导向室与外部连通；导向阀，其与在保持部和壳体之间的连接通道紧密接触以产生主阻尼力；以及线轴引导件，其穿过并且连接至保持部、壳体和导向阀并且在围绕线轴的外部的状态下引导线轴。

Cylinder device

피스톤 로드의 신축에 대하여, 실린더 내의 피스톤의 미끄럼 이동에 의해 생기는 오일액의 흐름을 디스크 밸브(33)에 의해 제어하여 감쇠력을 발생시킨다. 디스크 밸브(33)의 배면측에 고착된 탄성 시일 부재(58)를 파일럿 보디(41)의 오목부(59)에 감합하여 파일럿실(34)을 형성하고, 파일럿실(34)의 내압에 의해 디스크 밸브(33)의 밸브 개방을 제어한다. 탄성 시일 부재(58)를 디스크 밸브(33)의 표면측으로 연장하여 연장부(58A)를 표면측에 고착시킨다. 이에 의해, 탄성 시일 부재(58)의 고착 시의 수축에 의해 디스크 밸브(33)에 작용하는 힘이 배면측과 표면측에서 균형을 이루어 상쇄되기 때문에, 디스크 밸브(33)의 휨이 방지되어, 안정된 감쇠력 특성을 얻을 수 있다.

Damping force adjustable shock absorber

피스톤 로드의 이동에 의해 작동 유체의 흐름이 생기는 유로(피스톤의 오일 통로)와, 상기 유로에 마련되며 솔레노이드에 의해 개폐 동작이 조정되는 감쇠력 조정 밸브를 구비하고 있다. 상기 유로에는, 감쇠력 조정 밸브와 직렬로, 고주파의 진동에 대하여 감쇠력을 저감하는 주파수 감응 기구를 마련하고 있다. 주파수 감응 기구에는, 작동 유체의 상류측의 실(상부실 또는 하부실)로부터 하류측의 실(하부실 또는 상부실)에의 흐름에 대하여 저항력을 부여하는 제2 밸브 기구(수축측 감쇠력 발생 밸브와 신장측 감쇠력 발생 밸브)를 구비하고 있다.

For operating the method for being used for the controllable damper of motor vehicles

本发明涉及一种用于操作特别是用于车辆悬架的可控减震器(1)的方法。减震器包括缸筒(10)、活塞(2)和活塞杆(3)，缸筒(10)内密封有液压流体，活塞(2)能够在缸筒(10)内部沿着缸筒轴线(A)轴向地运动并且将缸筒(10)再分成两个工作腔(11、21)，活塞杆(3)平行于缸筒轴线(A)延伸并且连接至活塞(2)。活塞(2)具有至少两个流体通道(12、22)，其中一个工作腔(11、21)通过至少两个流体通道(12、22)连接至另一个工作腔(21、11)；第一阀装置(13)位于第一流体通道(12)处以便阻尼活塞沿第一致动方向(R1)的运动；第二阀装置(23)位于第二流体通道(22)处以便阻尼活塞沿第二致动方向(R2)的运动。每个阀装置(13、23)具有至少一个阀板(14、24)，当阀处于关闭位置时至少一个阀板(14、24)靠置在阀座(15、25)上，并且当阀处于开启位置时至少一个阀板(14、24)至少部分地与阀座(15、25)间隔开。每个阀装置(13、23)包括先导腔(16、26)，并且相应的阀板(14、24)可以通过对先导腔(16、26)施加压力而被预加应力至阀的关闭位置。通过至少一个先导阀(31)能够调节每个先导腔(16、26)中的压力，先导阀(31)包括阀体(32)，阀体(32)能够在关闭位置与开启位置之间以限定方式运动，由此能够以有特定的方式调节先导腔(16、26)与工作腔(21、11)之间的溢流横截面。动态压力(p)能够在溢流侧以限定方式施加至阀体(32)，由此阻尼阀体(32)的运动。

Damping force controlling valve and shock absorber of using the same

본 발명은 감쇠력 가변식 밸브 및 이를 이용한 쇽업소버에 관한 것으로서, 제1유로 및 제3유로로 공급되는 유체의 양이 일차적으로 제한되도록 하여 제1, 제2가변 오리피스 입구측의 압력을 고압측 압력에 비교하여 상대적으로 작게 유지할 수 있고, 이를 통해 소프트 모드일 경우의 고속 조건에서 제2가변 오리피스 측으로의 누설량이 제한되므로, 고속에서의 감쇠력 특성이 낮게 유지되도록 한 감쇠력 가변식 밸브 및 이를 이용한 쇽업소버를 제공하는 것을 목적으로 한다. 상기한 목적을 달성하기 위해 본 발명에 따른 감쇠력 가변 밸브는 실린더 및 상기 실린더와 연통하는 리저버챔버를 갖추고, 실린더의 인장챔버와 연결되는 고압측 및 리저버챔버와 연결되는 저압측이 형성된 감쇠력 가변식 쇽업소에 설치되는 감쇠력 가변 밸브에 있어서, 메인 밸브를 포함하는 제1유로와, 제1고정 오리피스와 제1가변 오리피스를 포함하는 제2유로, 그리고, 제1고정 오리피스와 제2가변 오리피스 및 제2고정 오리피스를 포함하는 제3유로로 이루어진다. The present invention relates to a variable damping force valve and a shock absorber using the same, wherein the pressure at the inlet side of the first and second variable orifices is controlled so that the amount of fluid supplied to the first passage and the third passage is primarily limited. It can be kept relatively small in comparison with this, and thus the amount of leakage to the second variable orifice side in the high speed condition in the soft mode is limited, so that the damping force variable valve at the high speed is kept low and the shock absorber using the same. The purpose is to provide. In order to achieve the above object, the damping force variable valve according to the present invention has a cylinder and a reservoir chamber communicating with the cylinder, and the damping force variable valve having a high pressure side connected to the tension chamber of the cylinder and a low pressure side connected to the reservoir chamber is formed. A variable damping force valve installed in a business, comprising: a first flow path including a main valve, a second flow path including a first fixed orifice and a first variable orifice, and a first fixed orifice, a second variable orifice, and a second flow path. A third flow path comprising a fixed orifice. 쇽업소버, 실린더, 감쇠력, 밸브, 액츄에이터, 피스톤, 스풀, 스풀로드 Shock absorber, cylinder, damping force, valve, actuator, piston, spool, spool rod

Damping valve

감쇠 밸브는, 포트를 구비한 밸브 시트 부재와, 포트를 개폐하는 밸브체와, 밸브체를 내부 압력에 의해 밸브 시트 부재측을 향해 가압하는 배압실과, 배압실에 포트의 상류측의 압력을 감압하여 유도하는 파일럿 통로와, 파일럿 통로의 도중에 설치되어 배압실 내의 압력을 제어하는 파일럿 밸브를 구비하고, 파일럿 밸브는, 내외를 연통함과 함께 포트로 통하는 투과 구멍이 형성된 통 형상의 밸브 수용 통과, 밸브 수용 통의 단부에 설치된 환 형상의 파일럿 밸브 시트를 갖는 파일럿 밸브 시트 부재와, 대직경부와, 밸브 수용 통 내에 미끄럼 이동 가능하게 삽입되는 소직경부와, 대직경부와 소직경부 사이에 설치되어 투과 구멍에 대향하는 오목부를 갖는 파일럿 밸브체를 구비하고, 파일럿 밸브 시트에 대직경부의 단부를 이격 착좌시켜, 파일럿 통로를 개폐한다. The damping valve includes a valve seat member having a port, a valve body for opening and closing the port, a back pressure chamber for pressing the valve body toward the valve seat member side by the internal pressure, And a pilot valve provided in the middle of the pilot passage for controlling the pressure in the back pressure chamber. The pilot valve has a cylindrical valve-receiving passage in which a through hole communicating with the inside and outside of the pilot passage is formed, A pilot valve seat member having an annular pilot valve seat provided at an end of the valve receiving cylinder; a small diameter portion, a small diameter portion inserted into the valve receiving cylinder so as to be slidably movable, and a small diameter portion provided between the large diameter portion and the small diameter portion, And an end of the large diameter portion is seated on the pilot valve seat so as to be spaced apart from the pilot valve seat so that the pilot passage Open and close.

Valve arrangement

一种包括主阀构件的阀装置，该主阀构件轴向可移动地布置在阀壳中，并且被布置成与阀壳的主阀座相互作用以便响应于作用于主阀构件上的导向压力而限制或调节主流体流中的压力。控制阀构件响应于作用在控制阀构件上的驱动力而在主阀构件内是轴向可移动的。导向阀构件在控制阀构件内是轴向可移动的，并且布置成与控制阀构件的导向阀构件相互作用，以限制导向流体流自导向室流出。导向阀构件相对于主阀构件或阀壳朝着导向阀座被弹性地加载，使得在导向阀构件上的弹性加载响应于驱动力是可调节的。

Damping force adjustable damper

피스톤 로드의 신축에 대하여, 실린더 내의 피스톤의 슬라이딩에 의해 생기는 오일액의 흐름을 감쇠력 발생 기구에 의해 제어하여 감쇠력을 발생시킨다. 감쇠력 발생 기구는, 오일액을 파일럿실에 도입하여, 그 내압에 의해 밸브 개방 압력을 조정하는 파일럿형의 메인 밸브 및 제어 밸브와, 파일럿 밸브를 구비하고, 파일럿 밸브에 의해 제어 밸브의 파일럿실의 내압을 제어하며, 제어 밸브에 의해 메인 밸브의 파일럿실의 내압을 제어한다. 이에 의해, 필요한 감쇠력 특성의 조정 범위를 유지하면서, 파일럿 밸브의 유량을 작게 할 수 있어, 솔레노이드 밸브의 소형화가 가능하게 된다. With respect to the expansion and contraction of the piston rod, the flow of oil liquid generated by sliding of the piston in the cylinder is controlled by a damping force generating mechanism to generate damping force. The damping force generating mechanism includes a pilot-type main valve and a control valve that introduces an oil liquid into the pilot chamber and adjusts the valve opening pressure by its internal pressure, and a pilot valve. The internal pressure is controlled, and the internal pressure of the pilot chamber of the main valve is controlled by the control valve. Thereby, while maintaining the adjustment range of the required damping force characteristic, the flow rate of the pilot valve can be reduced, and the solenoid valve can be downsized.

Damping force controlling shock absorber

본 발명은 서브 리테이너의 테두리를 따라 슬릿을 형성시켜 서브 리테이너의 테두리 부위와 연결유로가 상호 중첩되지 않도록 함으로써, 유체가 이동하는 과정에서의 간섭을 최소화할 수 있어 유속이 빨라지는 중, 고속 구간에서 유로 저항이 크게 발생하지 않으며, 이를 통해 소프트 모드에서 감쇠력이 과도하게 상승하는 것을 방지할 수 있는 감쇠력 가변식 쇽업소버에 관한 것이다. In the present invention, the slit is formed along the rim of the sub retainer so that the rim portion of the sub retainer and the connection passage are not overlapped with each other, so that the interference during the movement of the fluid can be minimized, And a damping force variable shock absorber capable of preventing a damping force from being excessively increased in a soft mode.

Solenoid valve of a shock absorber

A solenoid valve of a shock absorber is provided to simplify the structure and assembling work for the solenoid valve by integrally forming a valve retainer with the solenoid valve. A solenoid valve(100) of a shock absorber comprises a housing(110), a disc valve(120), and a back-pressure chamber(130). The back-pressure chamber presses the disc valve from a rear portion of the disc valve. The disc valve covers a first fluid path(122a) which is perpendicular to a valve retainer(122) of the disc valve. The valve retainer is connected to a high-pressure fluid path(2a) of the shock absorber through a connector(121). High-pressure fluid is introduced from the high-pressure fluid path through the connector and then flows to the disc valve through the first fluid path. The disc valve includes a plurality of discs which are deformable to form the damping force.

Vehicle heigt adjustable type shock absorber

A vehicle height-adjustable shock absorber is provided to prevent a relief valve from being separated from a valve holder by mounting the relief valve in the valve holder while the relief valve is located in a high pressure chamber. A vehicle height-adjustable shock absorber comprises a relief valve assembly, a high pressure chamber(80), a low pressure chamber(60), a valve holder(910) and a relief valve(920). The relief valve assembly is provided between an inner tube(10) and an outer tube(50). The high pressure chamber and the low pressure chamber are partitioned by the relief valve assembly. The relief valve is formed so as to open the high pressure chamber or the low pressure chamber selectively according to pressure of the high pressure chamber, and is located inside the high pressure chamber while being mounted in the valve holder.

Damping force variable buffer valve

특별히 쇽 업소버를 위한 완충 밸브로서, 완충 매체로 채워진 실린더를 포함하고, 이 실린더 안에 피스톤 로드가 피스톤과 함께 축방향으로 움직이도록 형성되고, 이 피스톤이 실린더를 두개의 작동실로 분리한다. 이 때 완충 밸브는 아마추어와 연결된 솔레노이드를 통하여 조절될 수 있도록 형성되며, 긴급작동 조절장치를 갖는다. 이때 상기 긴급작동 조절장치의 밸브 위치를 위해서 스토퍼가 갖춰지는데, 상기 스토퍼의 위치는, 아마추어에 상대적으로, 긴급작동 조절장치를 위한 통로 횡단면을 규정하는데 사용될 수 있다.

Fluid pressure buffer

Damping force controlling shock absorber

본 발명은 감쇠력을 가변시키는 밸브구조를 내부에 형성하여 구조가 간단해지고, 차량과의 장착성이 향상되며 부품수의 감소로 인한 제조원가를 절감하는 감쇠력 가변식 쇽업소버에 관한 것으로서, 감쇠력을 가변시키는 감쇠력 가변 밸브를 포함하며, 상기 감쇠력 가변 밸브는 상기 고압측 및 상기 저압측과 연결되는 내부 유로가 형성되며 상기 바디 밸브의 하측에 설치되어 상기 고압측 또는 상기 저압측과 각각 연결되는 고압측 유로 및 저압측 유로가 형성된 하우징과, 상기 하우징 내부에 설치되며 상기 고압측 유로 및 상기 저압측 유로로 연통하는 내부 유로를 가변하는 스풀과 감쇠력을 발생하는 디스크를 갖는 밸브부와, 상기 밸브부의 측면에 결합되며 상기 스풀을 구동시키는 액츄에이터부를 포함한다. The present invention relates to a damping force variable shock absorber that forms a valve structure for varying the damping force therein, thereby simplifying the structure, improving mountability with the vehicle, and reducing manufacturing costs due to a reduction in the number of parts. And a variable valve, wherein the damping force variable valve has an internal flow path connected to the high pressure side and the low pressure side, and is installed at a lower side of the body valve and connected to the high pressure side or the low pressure side, respectively. A valve portion having a housing having a side flow path, a spool which is installed inside the housing and communicates with the high pressure side flow path and the low pressure side flow path, and a disk for generating a damping force; And an actuator unit for driving the spool. 쇽업소버, 인터 튜브, 베이스 쉘, 세퍼레이터 튜브, 하우징, 감쇠력, 가변 Shock absorber, inter tube, base shell, separator tube, housing, damping force, variable

Damping force control valve and shock absorber using the same

本发明公开了一种阻尼力控制阀和利用此控制阀的减震器。该控制阀包括与汽缸张力室连通的高压区和与储蓄室连通的低压区，并通过借助于孔调节引导室压力来控制阻尼力，每个孔具有由阀芯控制成打开或者关闭的通道。该阀包括：主阀，安装在高低压区之间，并根据高压区的压力、初始预载和引导室的压力被控制开启或关闭，该主阀当打开时允许工作流体从高压区流动到低压区；与高压区连通的第一固定孔；旁路通道，用于通过打开第一可变孔把供应的工作流体排放到低压区，第一可变孔使第一固定孔和低压区连通；第二固定孔，用于控制排放到低压区的工作流体，从而通过打开第二可变孔供应的工作流体控制引导室的压力，第二可变孔使第一固定孔和引导室连通。

Body valve of shock absorber

여기에서는, 내부관 내부를 작동챔버와 리저버 챔버로 구획하는 쇽업소버의 바디밸브가 개시된다. 상기 바디밸브는, 상기 작동챔버와 상기 리저버 챔버 사이에 고정 설치된 중공형의 시트부재와, 상기 시트부재와 접할 때 닫히는 통로를 구비하며, 상기 작동챔버와 상기 리저버 챔버 사이의 압력차에 의해 수직 상승할 때, 상기 통로가 개방되는 실링부재를 포함한다. Here, a body valve of a shock absorber for dividing an inner tube inside into an operating chamber and a reservoir chamber is disclosed. The body valve has a hollow seat member fixedly installed between the working chamber and the reservoir chamber, and a passage closed when the body valve contacts the seat member, and is vertically raised by a pressure difference between the working chamber and the reservoir chamber. When included, the sealing member includes a passage opening. 바디밸브, 내부관, 외부관, 쇽업소버, 시트부재, 실링부재, 탄성 구속부재 Body valve, inner tube, outer tube, shock absorber, seat member, sealing member, elastic restraint member

Adjustable damping valve device for a vibration damper

本发明涉及一种用于减振器的阻尼阀装置，包括致动器，所述致动器作用在先导阀的先导阀体上，其中所述先导阀体与主阀的主阀体设置在一个应力链中，其中主阀体的行程与先导阀体的行程成比例，以及阻尼阀装置的阻尼力特性受阀弹簧装置影响，其中所述先导阀体控制可调节的弹簧夹紧件，所述弹簧夹紧件作为阀弹簧装置的组成部分确定主阀弹簧的预紧。

Adjustable vibration-damper

一种可调节减振器(1)，其特别用于车辆底盘并且包括气缸筒(10)，液压流体以密封的方式容纳在气缸筒(10)中，可调节减震器还包括活塞(2)，活塞(2)能够在气缸筒(10)内沿着气缸筒轴线(A)轴向地运动并且将气缸筒(10)划分为两个工作腔(11，21)，可调节减震器还包括活塞杆(3)，活塞杆(3)定向为与气缸筒轴线(A)平行并且连接到活塞(2)，其中，至少一个阀组件(13，23)布置在流体输送通孔(12，22)处以抑制在致动方向(R1，R2)上的活塞运动，并且其中，除了流体输送通孔(12，22)之外，至少一个旁路管道(47)设置在两个工作腔之间，并且旁路管道(47)包括用于第一通流方向(B1)的第一通流横截面，第一通流横截面与用于第二通流方向(B2)的第二通流横截面不同，其中，旁路管道(47)至少部分地由至少一个流出通路(38，34)形成，至少一个流出通路(38，34)布置在用于调节先导压力的先导阀(31)的出口侧。

Variable rate shock absorber and system therefor

내용없음. None.

Adjustable hydraulic vibration damper for motor vehicles

Shock absorber

본 발명은 쇽업소버의 행정 변환 시에도 큰 감쇠력 변경을 억제할 수 있는 쇽업소버를 제공하는 것으로서, 배압실을 갖는 쇽업소버에 있어서, 상기 배압실를 구성하고, 배압홀, 및 유입 유로가 형성되는 하우징; 상기 배압실 내 유체의 상기 배압홀을 통한 배출을 허여할 수 있는 디스크 밸브체; 상기 배압실 내로 상기 유입 유로를 통한 유체의 유입을 허여할 수 있고, 가요성 재료로 형성되는 다이어프램 밸브체를 포함하는, 쇽업소버를 제공한다.

Damping force adjustable hydraulic shock absorber

Damping force adjustable shock absorber

一种阻尼力调节式缓冲器，其具有：封入有工作流体的缸筒；能够滑动地嵌装在该缸筒内的活塞；与该活塞连结的活塞杆；阻尼力产生机构，其控制由于所述活塞滑动而产生的工作流体的流动来产生阻尼力。所述阻尼力产生机构包括先导型阻尼阀，包括所述先导型阻尼阀的阀体和形成所述先导室的部件的多个环状部件固定在轴状部件上，该轴状部件插通该多个环状部件，在一个所述环状部件与所述轴状部件之间形成有空间，在所述空间内至少配置有过滤器和固定节流孔中的一方。

VALVE ARRANGEMENT FOR REGULATING THE DAMPING PRESSURE IN VEHICLE SUSPENSIONS

ADJUSTABLE SHOCK ABSORBER, ESPECIALLY FOR MOTOR VEHICLES

L'AMORTISSEUR SELON L'INVENTION COMPORTE UN CYLINDRE 1 CONTENANT UN FLUIDE D'AMORTISSEMENT, PLUS PARTICULIEREMENT UN LIQUIDE, UNE TIGE DE PISTON PLONGEANTE 3 DEPLACABLE AXIALEMENT ET DE MANIERE ETANCHE DANS LE CYLINDRE, ET UN PISTON D'AMORTISSEMENT 4 QUI DIVISE L'INTERIEUR DU CYLINDRE EN DEUX MOITIES DE CHAMBRE DE TRAVAIL 5, 6 ET QUI EST POURVU DE CANAUX DE PASSAGE 11 DU FLUIDE PRODUISANT LA FORCE D'AMORTISSEMENT, DONT LA SECTION TRANSVERSALE EFFECTIVE EST REGLABLE AU MOYEN D'UN ORGANE D'ETRANGLEMENT 12 ET D'UNE COMMANDE ELECTROMAGNETIQUE 15 AGISSANT SUR CE DERNIER, LA COMMANDE COMPORTANT UN CIRCUIT MAGNETIQUE ET UN ENROULEMENT, QUI SONT PREVUS A PROXIMITE IMMEDIATE DES CANAUX DE PASSAGE DU FLUIDE ET DE L'ORGANE D'ETRANGLEMENT DANS LE PISTON D'AMORTISSEMENT, CARACTERISE EN CE QUE L'ORGANE D'ETRANGLEMENT 12 EST POURVU DE SURFACES DE SOLLICITATION PAR LE FLUIDE DISPOSEES DE MANIERE APPROPRIEE ET PROVOQUANT SON DEPLACEMENT SELON LA DIFFERENCE DE PRESSION DU FLUIDE ENTRE LES DEUX MOITIES DE CHAMBRE DE TRAVAIL 5, 6, ET EN CE QUE LA COMMANDE ELECTROMAGNETIQUE 15 EXERCE SUR L'ORGANE D'ETRANGLEMENT 12 UNE FORCE REGLABLE DE RAPPEL S'OPPOSANT A CE DEPLACEMENT.

Patent FR2665497B1

Patent FR2282071B1

Electronically controlled internal damper

본 발명은 메인 피스톤을 통하여 흐르는 작동 유체에 의하여 생성되는 메인 유로; 제1 파일럿 챔버와 제2 파일럿 챔버 각각의 압력이 일정 정도 이상 높아지면, 상기 제1 파일럿 챔버 및 상기 제2 파일럿 챔버 내부의 압력을 일정 정도로 유지토록 상기 제1 파일럿 챔버 및 상기 제2 파일럿 챔버로부터 배출되는 일정량만큼의 작동 유체에 의하여 생성되는 파일럿 유로; 및 상기 메인 피스톤의 상, 하부에 대칭되게 각각 배치되는 상기 압축 리테이너 및 상기 인장 리테이너와 스풀 로드의 상하 길이 방향을 따라 복수로 가로질러 관통된 홀들을 지나는 작동 유체에 의하여 형성되는 바이패스 유로를 포함하는 비교적 간단한 구성으로 소프트 모드와 하드 모드에서 전부 감쇠 성능을 구현할 수 있도록 하되, 강성을 줄이면서 씰링 성능을 높일 수 있도록 한 내장형 전자 제어 댐퍼에 관한 것이다. The present invention provides a main flow path generated by a working fluid flowing through the main piston; When the respective pressures of the first pilot chamber and the second pilot chamber increase by a predetermined level or more, the pressures in the first and second pilot chambers are maintained at a predetermined level from the first pilot chamber and the second pilot chamber. a pilot flow path generated by a predetermined amount of the discharged working fluid; and a bypass flow path formed by a working fluid passing a plurality of traversed holes in the vertical longitudinal direction of the compression retainer and the tension retainer and the spool rod symmetrically disposed on the upper and lower portions of the main piston, respectively. It relates to a built-in electronically controlled damper that can realize damping performance in both soft mode and hard mode with a relatively simple configuration that increases sealing performance while reducing rigidity.

Adjustable vibration damper

Infinitely adjustable shock absorber, in particular for motor vehicles

Stepless or continuously adjustable shock absorber

Damping force control valve and shock absorber using the same

The present invention relates to a damping force control valve and a shock absorber using the same. The present invention is conceived to solve the aforementioned problems in the prior art. An object of the present invention is to provide a damping force control valve, which has an improved inner channel so that a damping force is operated in a middle mode when an electric or mechanical trouble causes a shock absorber to be out of order or malfunction, and a shock absorber using the same. According to the present invention, there is provided a damping force control valve, which includes a high pressure region in communication with a tension chamber of a cylinder and a low pressure region in communication with a reservoir chamber, and controls a damping force by adjusting pressure of a pilot chamber by first and second variable orifices, the first and second variable orifices having channels controlled to open or close by a spool. The damping force control valve comprises a main valve opened or closed according to pressure of the high pressure region, initial preload and pressure of the pilot chamber, the main valve allowing working fluid to flow from the high pressure region to the low pressure region when being opened; a first fixed orifice formed between the high pressure region and the first variable orifice; and a back pressure forming channel for making the first fixed orifice and the pilot chamber communicate with each other and controlling the pressure of the pilot chamber when the spool closes a channel connecting the high pressure region and the pilot chamber.

Solenoid actuated continuously variable shock absorber

A shock absorber includes a pressure tube with a piston slidably disposed therein. A separate valve includes a fluid circuit for fluid low in rebound and a fluid circuit for fluid flow in compression. Each fluid circuit includes a variable orifice which allows selection between a firm rebound with a soft compression, a soft rebound with a soft compression, and a soft rebound with a firm compression. Each variable orifice is in communication with a blowoff valve in such a manner that they provide a variable blowoff feature to the blowoff valves.

Variable rate shock absorber and system therefor

12MS1287/1285r 223-86-0170 A VARIABLE RATE SHOCK ABSORBER and SYSTEM THEREFOR Abstract: The invention describes an electrically controllable mono-tube shock absorber (10) wherein the damping of the shock absorber is controlled by a solenoid valve (60). The valve (60) includes a poppet valve (150) which is mechanically independent of an electrically actuated armature (100). A second valve (200) is also disclosed which includes a poppet valve (202) having a cylindrical wall (206) which prevents the poppet valve from contacting the armature (100). A third valve, carried by the shock absorber piston (20) includes two axially extending passages one of which cooperates with a poppet valve (560) to increase fluid flow thereacross to reduce damping. Each valve can be actuated in accordance with the direction (sign) of a derived velocity signal.

Damping valve

감쇠 밸브는, 포트와 당해 포트를 둘러싸는 제1 밸브 시트를 구비하는 밸브 시트 부재와, 제1 밸브 시트에 이격 착좌됨과 함께 밸브 시트 부재와는 반대측에 제2 밸브 시트를 구비하는 주 밸브체와, 제2 밸브 시트에 이격 착좌되는 부 밸브체와, 주 밸브체와 부 밸브체 사이이며 제2 밸브 시트의 내주측에 형성되는 밸브체간 실과, 포트와 밸브체간 실을 연통함과 함께 통과하는 유체의 흐름에 저항을 부여하는 제한 통로와, 부 밸브체를 주 밸브체측으로 가압하는 부 밸브체 가압 수단을 구비한다. The damping valve includes a valve seat member having a port and a first valve seat surrounding the port, a main valve body having a first valve seat and a second valve seat on the opposite side to the valve seat member, A valve body interposed between the main valve body and the sub-valve body and formed on the inner peripheral side of the second valve seat, and a valve body interposed between the valve body and the valve body, And a sub-valve body urging means for urging the sub-valve body toward the main valve body.

Damping force adjustable fluid pressure shock absorber

Multi-stage adjustment damping valve, and shock absorber and suspension system using same

本发明提供一种多级调节阻尼阀及使用该阻尼阀的减振器、悬架系统，该多级调节阻尼阀包括节流阀、溢流阀和多级先导阀，多级先导阀包括一个机械调节阀和若干个不同节流孔径的高速开关电磁阀。该阻尼阀通过中间腔连接于减振器的有杆腔与储油腔之间，通过高速开关电磁阀的高频开关，实现减振器的多级阻尼迅速调节，并通过结合弹性元件、传感器、信号处理模块与控制器，组成具有多级阻尼调节功能的车辆悬架系统，能够根据车辆与路面信息，实时调整至最佳阻尼，兼顾车辆的平顺性、操稳性与安全性。本发明能够实现与连续阻尼调节技术相当的悬架性能改善效果，相比之下，本发明的加工精度、制造成本、控制与标定难度实现了大幅降低。

Damping force control type hydraulic shock absorber

The flow of a hydraulic fluid caused by sliding movement of a piston in a cylinder is controlled by a disk valve and extension- and contraction-side main valves, thereby generating damping force. By controlling the valve opening pressures of the disk valve as a pressure control valve with respect to extension- and compression-side valve seats with a proportional solenoid actuator, damping force can be directly controlled independently of the piston speed. Moreover, the pressures in pilot chambers are changed to control the valve opening pressures of the extension- and compression-side main valves. Because the disk valve is placed between the extension- and compression-side valve seats, it is possible to simultaneously select different damping force characteristics for the extension and compression sides.

Adjustable damping valve device for a vibration damper

The damping-valve device (27) has an actuator (37) that acts on a valve structure of preliminary-stage valve (39). The valve structure of preliminary-stage valve is connected with a valve structure (65) of a main stage valve (67) by tension chain. An adjustable spring compressor (49) is movably placed in a spring compressor housing (51) so as to control the bias of a main stage valve spring (69) with respect to main stage valve, such that damping medium flows in main stage valve in same direction regardless of direction of operative travel of vibration damper.

Valve arrangement with improved failsafe operation

The present relates to a valve arrangement (1) for controlling a flow of damping medium in a shock absorber. The invention is based on the insight that traditional radial or angled fail safe flows create turbulence which affects the axial position of the control valve member by direct axial forces and increased friction due to radial forces acting on the control valve member. By instead providing a radial column (18) with an axial failsafe flow (20), the fail safe flow (20) is not dependent on the exact axial position of the control valve member (5) for creating the fail safe restriction, and moreover less turbulence arise affecting the axial position of the control valve member (5). Thereby an improved valve arrangement (1) is provided which has a more stable and reliable failsafe operation, resulting in a more dependable valve arrangement (1).

Air spring and damper unit having a pilot-controlled main valve

Air spring and damper unit for vehicles, which has, as operating spaces, at least two pressure spaces which are filled with compressed air and are connected to one another via flow channels, and movable walls in the form of rolling bellows or folding bellows, wherein a pilot-controlled main valve which can be loaded with a control pressure on the low-pressure side is configured at least in one flow direction in a first flow channel.

System for controlling a vehicle's motion

Vibration damper with two-stage throttled damping force control

Die Erfindung betrifft einen regelbaren Schwingungsdämpfer mit einer Dämpfungskraftsteuerung, umfassend ein mit Dämpfungsmittel gefülltes Dämpferrohrgehäuse und ein mit dem Dämpferrohrgehäuse baulich und fluidisch verbundenes Dämpfungsventilelement zur Dämpfungskraftsteuerung, wobei das Dämpfungsventilelement als vorgesteuertes Druckbegrenzungsventil mit einem Pilotventil ausgebildet ist.

Damping force-adjusting shock absorber

A main valve is disposed in the lower part of a piston valve. Inside a piston case of the upper part of the piston valve, a subvalve for varying the set load for said main valve is provided. A first valve element of said subvalve is configured so as to form a metal seal wherein the first valve element is able to slide with respect to a case member at only one place.

buffer

Hydraulic shock absorber with damping force control

Hydraulikstoßdämpfer mit Dämpfungskraftsteuerung, umfassend: einen Zylinder (2), in dem ein Hydraulikfluid eingeschlossen ist; einen Kolben (5), der verschiebbar in den Zylinder (2) eingepasst ist, den Innenraum des Zylinders (2) in eine obere (2A) und eine untere Zylinderkammer (2B) teilt und mit Hydraulikfluiddurchlässen (16, 17, 18) versehen ist, die eine Verbindung zwischen der oberen (2A) und der unteren Zylinderkammer (2B) herstellen und durch die das Hydraulikfluid als Antwort auf die Verschiebebewegung des Kolbens (5) strömen kann, wobei die Hydraulikfluiddurchlässe (16, 17, 18) zumindest einen Hydraulikfluiddurchlass (16, 17) der Expansionsseite sowie zumindest einen Hydraulikfluiddurchlass (16, 17) der Kompressionsseite umfassen; eine Kolbenstange (6), die mit einem ihrer Enden mit dem Kolben (5) verbunden ist, wobei sich das andere Ende der Kolbenstange (6) zur Außenseite des Zylinders (2) erstreckt; und ein vorsteuerbetätigtes Dämpfungskraftsteuerungsventil, das für die Hydraulikfluiddurchlässe (16, 17) der Expansionsseite und/oder die Hydraulikfluiddurchlässe (16, 17) der Kompressionsseite vorgesehen ist, um eine Dämpfungskraft zu erzeugen, indem die Strömung des Hydraulikfluids in den Hydraulikfluiddurchlässen (16, 17, 18) gesteuert wird; wobei das durch Vorsteuerung betätigte Dämpfungskraftsteuerungsventil Hauptdämpfungsventile (19, 20) aufweist, die in den Hydraulikfluiddurchlässen (16, 17) der Expansionsseite und/oder den Hydraulikfluiddurchlässen (16, 17) der Kompressionsseite vorgesehen sind, sowie ein einziges Vorsteuerventil (28) zum Steuern eines Vorsteuerdrucks der Hauptdämpfungsventile (19, 20), dadurch gekennzeichnet, dass die Hauptdämpfungsventile (19, 20) sich voneinander in den Ventilöffnungscharakteristika während eines und desselben Expansions- oder Kompressionshubs der Kolbenstange unterscheiden und dabei geeignet sind, sich beim ... A damping force control hydraulic shock absorber comprising: a cylinder (2) in which a hydraulic fluid ...

ADJUSTABLE SHOCK ABSORBER, IN PARTICULAR FOR VEHICLES.

Variable damping force valve assembly

감쇠력 가변 밸브 조립체가 개시된다.본 발명의 일 측면에 따르면, 유체가 충전된 실린더와, 상기 실린더 내부를 압축챔버와 인장챔버로 구분하며 피스톤 로드와 함께 압축 및 인장 행정을 하는 피스톤 밸브를 구비하는 쇽업소버에 설치되는 감쇠력 가변 밸브 조립체에 있어서, 상단에 피스톤 로드가 결합되고 하단에 피스톤 밸브가 결합되어 상기 실린더 내에서 상기 피스톤 밸브와 함께 이동하도록 마련되는 하우징; 상기 하우징 내에 설치되어 자기력에 의해 작동하는 스풀을 갖춘 솔레노이드; 및 상기 하우징 내에서 상기 솔레노이드와 피스톤 밸브 사이에 배치되고, 압축 및 인장행정 시 유체가 이동되는 메인유로가 형성되며, 상기 솔레노이드의 작동에 따라 감쇠력을 조정하는 압력제어부;를 포함하고, 상기 압력제어부는 압축행정 시 상기 메인유로와 별도로 유체의 흐름을 허용하는 제1 및 제2 볼 체크밸브와, 인장행정시 상기 메인유로와 별도로 유체의 흐름을 허용하는 제3 및 제4 볼 체크밸브를 구비하고, 상기 제1 내지 제4 볼 체크밸브는 작동 시 프리로드가 제로인 상태로 마련되는 감쇠력 가변 밸브 조립체가 제공될 수 있다. A damping force variable valve assembly is disclosed. According to one aspect of the present invention, a cylinder filled with fluid and a piston valve dividing an inside of the cylinder into a compression chamber and an extension chamber and performing compression and tension strokes together with a piston rod are provided. A damping force variable valve assembly installed in a shock absorber, comprising: a housing provided with a piston rod coupled to an upper end and a piston valve coupled to a lower end to move together with the piston valve within the cylinder; a solenoid having a spool installed in the housing and operated by magnetic force; and a pressure control unit disposed between the solenoid and the piston valve in the housing, having a main flow path through which fluid moves during compression and tension strokes, and adjusting a damping force according to the operation of the solenoid. Equipped with first and second ball check valves allowing the flow of fluid separately from the main flow path during the compression stroke, and third and fourth ball check valves allowing the flow of fluid separately from the main flow path during the tension stroke. , The first to fourth ball check valves may be provided with a damping force variable valve assembly provided in a state in which a preload is zero during operation.

Hydraulic damping force control unit, hydraulic shock absorber, front fork for vehicle, and hydraulic rotary damper

A damping force is generated by keeping a damping force control valve closed when a piston of a hydraulic shock absorber starts to move from compression side dead center or expansion side dead center. A damping force control valve including a poppet valve for opening and closing a first fluid path is provided. A pilot pressure chamber defined from the fluid path by a valve element of the damping force control valve is provided. A linear solenoid and a pilot valve for increasing and reducing the hydraulic pressure in the pilot pressure chamber are provided. A check valve disposed in parallel with the damping force control valve is provided in a piston. A communication path for communication between the first fluid path downstream of the damping force control valve and the pilot pressure chamber is provided.