STRIKING HAND-HELD MACHINE TOOL

The invention relates to a striking hand-held machine tool having a tool holder for holding a striking tool on a working shaft, an electric motor, and a striking mechanism. In the striking direction, the striking mechanism has an exciter piston, a pneumatic chamber, a striker, an intermediate chamber and a rivet snap following one another. A closed channel connects a first channel opening in the pneumatic chamber and a second channel opening in the intermediate chamber. A non-return valve, which shuts off during an air flow from the first channel opening to the second channel opening and opens during an air flow from the second channel opening to the first channel opening, is arranged in the channel. Arranged on the second channel opening is a shut-off valve, which is forced into a position closing the second channel opening when the rivet snap is in the working position. 1. A hand-held percussion power tool , comprisinga tool holder for holding a percussion tool on a working axis;an electric motor;a percussion mechanism, comprising an exciter piston, a pneumatic chamber comprising a first channel opening, a percussion piston, an intermediate chamber comprising a second channel opening, and a rivet header sequentially arranged in a percussion direction;a closed channel, which connects the first channel opening in the pneumatic chamber and the second channel opening in the intermediate chamber;a check valve arranged in the closed channel, which blocks air flowing from the first channel opening to the second channel opening and opens to allow air to flow from the second channel opening to the first channel opening; and, a shut-off valve, which is arranged at the second channel opening and is forced into a position in which the shut-off valve seals the second channel opening the rivet header is in a working position.2. The hand-held power tool according to claim 1 , wherein a spool valve claim 1 , which is formed by a radial opening in the pneumatic chamber and the ...

VIBRATION REDUCING STRUCTURE OF PNEUMATIC HAMMER

A vibration reducing structure of pneumatic hammer includes a handle having a concave room with a bottom wall and an air inlet channel communicating with the concave room. A control valve is disposed in the air inlet channel. A movable inner tube shell is accommodated in an outer tube shell coupled with the concave room and extends a rear bucket portion into the concave room. A movable hammer member, an air inlet valve for activating the hammer member and a hole communicating the air inlet channel to the air inlet valve are disposed in the inner tube shell. An air room is formed between the bottom wall and an end wall of the inner tube shell. A communicating channel communicates the air inlet channel to the air room for air with high pressure entering the air room. 1. A vibration reducing structure of pneumatic hammer comprising:a handle having a top portion and a bottom portion, the top portion being provided with a concave room having an opening end and a bottom wall, the bottom portion being provided with an air inlet channel extending at an angle to communicate with the concave room, the air inlet channel being provided with a control valve for controlling air to pass through;an outer tube shell coupled with the opening end of the concave room;a movable inner tube shell accommodated in the outer tube shell, the inner tube shell with a front tube portion and a rear bucket portion extending into the concave room, wherein the front tube portion is provided with a movable hammer member, the rear bucket portion is provided with an air inlet valve for activating the hammer member and a hole communicating the air inlet channel to the air inlet valve;an air room formed between the bottom wall and an end wall of the rear bucket portion, wherein a sealing ring is provided on the rear bucket portion to closely connect with the concave room; anda communicating channel formed in a straight direction with no bend on a front side of the handle, a drilled opening formed on the ...

CARBON-FIBER SEAT FOR A PNEUMATIC HAMMER

A carbon-fiber seat for a pneumatic hammer has a rear valve, a front valve, and a valve plate. The rear valve, the front valve, and the valve plate are made of carbon fiber materials. The rear valve has an inlet recess, an inlet passage, an exhaust annular recess, at least one exhaust port, and at least one exhaust passage. The front valve abuts the rear valve and has a communicating recess, an exhaust mount, and at least one exhaust port. The communicating recess is formed through the front valve, and communicates with the inlet recess of the rear valve. The exhaust mount is formed on and protrudes axially from the front valve around the communicating recess. The at least one exhaust port is formed in the exhaust mount such that the communicating recess communicates with the outer recess. The valve plate is deposited between the two valves. 1. A carbon-fiber seat for a pneumatic hammer comprising: a rear side;', 'a front side;', 'an external surface;', 'a center;', 'an inlet recess formed in the front side of the rear valve at the center of the rear valve;', 'an inlet passage axially formed through the rear side of the rear valve at the center of the rear valve, and communicating with the inlet recess;', 'an exhaust annular recess formed in the front side of the rear valve around the inlet recess, and having a bottom;', 'at least one exhaust port axially formed in the bottom of the exhaust annular recess; and', 'at least one exhaust passage radially formed through the external surface of the rear valve and communicating with the at least one exhaust port;, 'a rear valve made of carbon fiber materials, and having'} a rear side abutting the front side of the rear valve;', 'a front side;', 'a center;', 'a communicating recess formed through the front side and the rear side of the front valve, and communicating with the inlet recess of the rear valve;', 'an exhaust mount formed on and protruding axially from the rear side of the front valve around the communicating ...

Pneumatic Tool Having Movable Air Tube

A pneumatic tool contains: a body, a drive unit, a piston element, at least one buffer, and a movable air tube. The body includes an intake head, a limiting sleeve, a switch, an air conduit, and a connection portion. The connection portion has a first guide element, a first guiding orifice, and the limiting sleeve has a shoulder. The drive unit includes a moving tube, a first segment, and a second segment. The moving tube has a protrusion, the second segment has a second guide element and a second guiding orifice. The moving tube has a coupling orifice and a cavity, and an air valve is defined between the cavity and the second guide element. One buffer is defined between the first guide element and the second guide element and includes a first through hole. The movable air tube includes an air inlet segment and an air outlet segment. 1. A pneumatic tool having a movable air tube comprising:a body including an intake head and a limiting sleeve, the intake head having a switch arranged on an outer wall of the intake head, an air conduit defined in the intake head, and a connection portion formed on an end of the intake head, wherein the connection portion has a first guide element connected on an edge thereof, and the first guide element has a first guiding orifice, a first end of the limiting sleeve is connected with the connection portion of the intake head, and the limiting sleeve has a shoulder formed therein;a drive unit including a moving tube which has a first segment and a second segment, and the moving tube being slidably received in the limiting sleeve of the body, wherein the moving tube has a protrusion formed on an outer wall thereof and stopped by the shoulder of the limiting sleeve so that the moving tube does not slide forward in the limiting sleeve, the second segment of the moving tube has a second guide element arranged therein, the second guide element has a second guiding orifice defined thereon, the moving tube has a coupling orifice defined on a ...

Key Locked Insert Installation Tool

In a method for installing a key locked insert to a workpiece, the workpiece has a hole open to a first surface. The method includes: threading an insert body into the hole; threading a first portion of a mandrel into the insert body; after the threading of the first portion into the insert body, mating a second portion of the mandrel with an actuator; and using the actuator to extend an anvil relative to the mandrel to drive keys of the insert through a thread of the workpiece hole.

Auto-lubrication system for a work tool

A lubrication system including a drive fluid chamber and a lubricant chamber. A first movable member is movable from a first position to a second position within the drive fluid chamber in response to drive fluid pressure acting on the first movable member. A second movable member is movable between a first position and a second position within the lubricant chamber and is operatively coupled to the first movable member. A biasing member is positioned to bias the first movable member toward the first position. A relief valve is associated with the first movable member and, when the relief valve in an open state, the drive fluid pressure acting on the first movable member is reduced such that the biasing member moves the first movable member to the first position within the drive fluid chamber.

Shock Absorption Device for Pneumatic Tool

A device absorbs shock in a pneumatic tool containing a body, a cylinder, a valve unit, a piston member, plural buffer springs, and multiple fitting sleeves. The body includes a grip and a fitting sleeve fitted with the grip. The fitting sleeve has a chamber, a close face formed on a first end thereof, and an opening formed on a second end thereof. Each fitting sleeve is hollow and includes a limitation length forming along a hollow extending direction and shorter than a largest length. Multiple positioning sleeves are defined between a close face of the fitting sleeve and an abutting portion of the cylinder, and the multiple positioning sleeves are hollow so as to accommodate plural buffer springs. Because the limitation length is shorter than the largest length, the plural buffer springs extend out of the multiple positioning sleeves respectively. 1. A shock absorption device for a pneumatic tool , wherein a pneumatic tool comprises:a body including a grip and a fitting sleeve fitted with the grip, with the fitting sleeve having a chamber defined therein, a close face formed on a first end thereof, and an opening formed on a second end thereof;a cylinder slidably fixed in the chamber of the fitting sleeve and a part thereof extending out of the opening of the fitting sleeve, with the cylinder including a room defined therein and an abutting portion adjacent to the close face of the chamber of the fitting sleeve;a valve unit fixed between the room and the abutting portion of the cylinder;a piston member accommodated in the room of the body and sliding forward and backward along a movement axis;plural buffer springs mounted in the chamber of the fitting sleeve and abutting against the close face of the chamber of the fitting sleeve and the abutting portion of the cylinder, wherein a pressing direction of each buffer spring is parallel to the movement axis of the piston member, and plural elastic supporting points form between the close face and the abutting portion ...

VIBRATION REDUCING STRUCTURE OF PNEUMATIC HAMMER

A vibration reducing structure of pneumatic hammer includes a handle having a concave room with a bottom wall and an air inlet channel communicating with the concave room. A control valve is disposed in the air inlet channel. A movable inner tube shell is accommodated in an outer tube shell coupled with the concave room and extends a rear end into the concave room. A movable hammer member, an air inlet valve for activating the hammer member and a hole communicating the air inlet channel to the air inlet valve are disposed in the inner tube shell. A sealed air room is formed between the bottom wall and an end wall of the inner tube shell. A communicating channel communicates the air inlet channel to the air room for air with high pressure entering the air room. 1. A vibration reducing structure of pneumatic hammer comprising:a handle having a concave room with an opening end and a bottom wall, the handle having an air inlet channel communicating with the concave room, the air inlet channel being provided with a control valve for controlling air to pass through;an outer tube shell coupled with the opening end of the concave room;a movable inner tube shell accommodated in the outer tube shell with a rear end extending into the concave room, wherein the inner tube shell is provided with a movable hammer member, an air inlet valve for activating the hammer member and a hole communicating the air inlet channel to the air inlet valve;an air room formed between the bottom wall and an end wall located at the rear end of the inner tube shell with an elastic supporting member abutting against the end wall, wherein a first sealing member is provided at the rear end to closely connect with the concave room to seal the air room; anda communicating channel communicating the air inlet channel to the air room for air with high pressure entering the air room.2. The vibration reducing structure of pneumatic hammer of claim 1 , wherein a joint between the communicating channel and the ...

VIBRATION REDUCING STRUCTURE OF PNEUMATIC HAMMER

A vibration reducing structure of pneumatic hammer includes a handle having a concave room with a bottom wall and an air inlet channel communicating with the concave room. A control valve is disposed in the air inlet channel. A movable inner tube shell is accommodated in an outer tube shell coupled with the concave room and extends a rear bucket portion into the concave room. A movable hammer member, an air inlet valve for activating the hammer member and a hole communicating the air inlet channel to the air inlet valve are disposed in the inner tube shell. An air room is formed between the bottom wall and an end wall of the inner tube shell. A communicating channel communicates the air inlet channel to the air room for air with high pressure entering the air room. 1. A vibration reducing structure of pneumatic hammer comprising:a handle having a concave room with an opening end and a bottom wall, the handle having an air inlet channel communicating with the concave room, the air inlet channel being provided with a control valve for controlling air to pass through;an outer tube shell coupled with the opening end of the concave room;a movable inner tube shell accommodated in the outer tube shell with a front tube portion and a rear bucket portion extending into the concave room, wherein the front tube portion is provided with a movable hammer member, the rear bucket portion is provided with an air inlet valve for activating the hammer member and a hole communicating the air inlet channel to the air inlet valve;an air room formed between the bottom wall and an end wall of the rear bucket portion, wherein a sealing ring is provided on the rear bucket portion to closely connect with the concave room; anda communicating channel communicating the air inlet channel to the air room for air with high pressure entering the air room.2. The vibration reducing structure of pneumatic hammer of claim 1 , wherein the concave room extends in a first direction that is at an angle to ...

IMPACT TOOL

An impact tool comprises: 1. Impact tool comprising:a casing;a rotating hammer arranged in said casing and rotatable by a motor;a rotating interface element arranged in said casing and rotatable by said hammer by a series of impacts;an output shaft rotating around a rotation axis, said output shaft having a proximal end fixed to said interface element and a distal end protruding from said casing, said distal end ending with a connecting element for removable connection to an outer mechanical adaptor;a unit of measurement arranged for obtaining a torque of said output shaft by a torque sensor mounted to said output shaft, said unit of measurement comprising a fixed measuring assembly mounted integrally to said casing and a rotating measuring assembly mounted so as to rotate integrally with said rotating output shaft;said fixed measuring assembly being configured to generate a supply signal and transmit said supply signal to said rotating measuring assembly to supply electrically said rotating measuring assembly;said rotating measuring assembly being configured to detect a measuring signal indicating said torque and condition said measuring signal in order to be able to send the measuring signal to said fixed measuring assembly;wherein said fixed measuring assembly and said rotating measuring assembly comprise electronic devices that carry out a two-directional communication in contactless mode by a magnetic coupling between said fixed measuring assembly and said rotating measuring assembly, said communication being configured to supply magnetically said torque sensor and permit transmission of said measuring signal conditioned by said rotating measuring assembly to said fixed measuring assembly.2. Impact tool according to claim 1 , wherein said magnetic coupling is resonant.3. Impact tool according to claim 1 , wherein said fixed measuring assembly comprises a fixed electronic module provided with a microprocessor suitable for generating said supply signal claim 1 , ...

Handheld Machine Tool

A handheld machine tool is disclosed. The tool has a tool receiving area and a striking mechanism. The striking mechanism contains a striker, an exciter, and a pneumatic chamber. The striker strikes an intermediate striker at the strike point. The exciter is driven between a first dead center at a distance from the strike point and a second dead center in the vicinity of the strike point. A housing, which is encapsulated in an air-tight manner, has an interior which is closed by an exciter end face facing away from the striker. The interior is connected to the pneumatic chamber by a first valve which can be closed by the striker and by a second valve which can be closed by the exciter. The first valve is arranged in the vicinity of the strike point and the second valve is arranged in the vicinity of the first dead center. 16.-. (canceled)7. A handheld machine tool , comprising:a tool receiving area, wherein a chiseling tool is receivable in the tool receiving area on a work axis;a striking mechanism which includes a guide tube coaxial to the work axis, a striker which is guided on the work axis and which strikes an intermediate striker at a strike point, an exciter which is periodically driven between a first dead center at a distance from the strike point and a second dead center in a vicinity of the strike point, and a pneumatic chamber for coupling a movement of the striker to the periodic movement of the exciter, wherein the pneumatic chamber is disposed between the striker and an end face of the exciter that faces the striker;a housing which is encapsulated in an air-tight manner, wherein an interior of the housing is closed by an end face of the exciter that faces away from the striker;a first valve which is closable by the striker and is disposed in the vicinity of the strike point, wherein the first valve connects the pneumatic chamber to the interior of the housing; anda second valve which is closable by the exciter and is disposed in a vicinity of the ...

Hand-held Power Tool

A power tool is disclosed. The power tool has a pneumatic percussion mechanism with a percussion element guided on a working axis and a percussion surface pointing in a percussion direction, an exciter piston driven by a motor, and a pneumatic chamber formed between the exciter piston and the percussion element. The percussion element has a first partial body forming the percussion surface, a second partial body, and a spring element. The first partial body is moveable along the working axis relative to the second partial body. The second partial body has an abutment surface pointing in the percussion direction. The first partial body has an impact surface opposite the abutment surface. The spring element drives the first partial body relative to the second partial body in the percussion direction into a starting position in which the abutment surface is separated from the impact surface by a gap. 17.-. (Canceled)8. A power tool , comprising:a tool holder for holding a chiseling tool on a working axis;a motor; anda pneumatic percussion mechanism, wherein the pneumatic percussion mechanism includes a percussion element guided on the working axis and having a percussion surface pointing in a percussion direction, an exciter piston drivable by the motor, and a pneumatic chamber formed between the exciter piston and the percussion element for coupling the percussion element to a movement of the exciter piston;wherein the percussion element has a first partial body that forms the percussion surface, a second partial body, and a spring element, wherein the first partial body is movable along the working axis relative to the second partial body, and wherein the second partial body has an abutment surface pointing in the percussion direction;wherein the first partial body has an impact surface opposite the abutment surface for receiving an abutment of the second partial body on the first partial body;wherein the spring element drives the first partial body relative to the ...

AIR HAMMER ATTACHMENT

An air hammer attachment having a support device extending between a first end and a second end. The first end has a threaded shaft and bolt. The second end having an inwardly extending rod and threaded bolt. 1. An air hammer attachment , comprising:a support device extending between a first end and a second end;the first end having a shaft and nut; andthe second end having an inwardly extending rod attached to an air hammer.2. The attachment of wherein the support device includes a pair of rods.3. The attachment of wherein the rods have a first section that angles outwardly from an axis of the shaft claim 2 , a second section that extends longitudinally claim 2 , and a third section that extends inwardly towards the second end.4. The attachment of wherein the support device is welded to the first and the second end. The present invention is directed to an attachment for an air hammer and, more specifically, an attachment that converts an air hammer into a slide hammer.Air hammers and slide hammers are well-known in the art. Both devices are expensive and perform different functions. An air hammer exerts an outward pushing pneumatic force and a slide hammer exists a pulling force. While both are useful, for convenience and to reduce expense, a need exists in the art where a device is configured to perform both functions.Therefore, an objective of the present invention is to provide an attachment for an air hammer that provides a pulling function.Another objective of the present invention is to provide an attachment for an air hammer that eliminates the need for a slide hammer. These and other objectives will be apparent to one of ordinary skill in the art based upon the following written description, drawings and claims.An attachment for an air hammer having a support device extending between a first end and a second end. The first end having a threaded shaft and nut. The support device preferably having a pair of spaced rods welded to the first and the second end. ...

Hand-Held Power Tool

A hand-held power tool includes an electric motor, a tool unit, and at least one operating unit. A motor switching unit is configured to sense a contact-pressure characteristic between the tool unit and the operating unit, and configured to switch the electric motor at least partially in dependence on the contact-pressure characteristic. 1. A hand-held power tool , comprising:an electric motor;a tool unit;at least one operating unit; anda motor switching unit configured to sense a contact-pressure characteristic between the tool unit and the operating unit, and configured to switch the electric motor at least partially in dependence on the contact-pressure characteristic.2. The hand-held power tool according to claim 1 , further comprising:a pneumatic percussion mechanism; anda tool receiver configured to receive an insert tool, the insert tool drivable along a work axis, whereinthe motor switching unit is configured to reduce a rotational speed of the electric motor on the basis of the sensed contact-pressure characteristic to a standstill.3. The hand-held power tool according to claim 1 , further comprising:a pneumatic percussion mechanism; anda tool receiver configured to receive an insert tool, the insert tool drivable along a work axis, whereinthe motor switching unit is configured to reduce a rotational speed of the electric motor on the basis of the sensed contact-pressure characteristic such that activation of the percussion mechanism is avoided.4. The hand-held power tool according to claim 1 , wherein the motor switching unit is configured to at least one of passively and actively brake the electric motor.5. The hand-held power tool according to claim 1 , wherein the tool unit is at least partially formed by a percussion-mechanism housing.6. The hand-held power tool according to claim 1 , wherein the at least one operating unit is at least partially formed by a main handle housing.7. The hand-held power tool according to claim 1 , wherein the motor ...

KEY LOCKING STUD INSTALLATION TOOL

A tool for installing a stud having a plurality of locking keys into a workpiece bore includes a main body, an actuator within the main body, a nosepiece adjacent the main body and having an anvil portion, and a mandrel disposed within the nosepiece. The actuator includes a movable piston, a shaft extending axially from the piston, and a coupler on a shaft end opposite the piston. The mandrel includes a threaded head portion and a body portion, and is releasably secured to the coupler. 1. A tool for installing a stud having a plurality of locking keys into a workpiece bore , the tool comprising:a main body; a movable piston;', 'a shaft extending axially from the piston; and', 'a coupler on a shaft end opposite the piston;, 'an actuator within the main body, the actuator comprisinga nosepiece adjacent the main body and having an anvil portion; and a threaded head portion; and', 'a body portion;, 'a mandrel disposed within with the nosepiece, the mandrel comprisingwherein the mandrel is releasably secured to the coupler.2. The tool of claim 1 , wherein the coupler is a female coupler comprising a spring-biased release sleeve.3. The tool of claim 1 , wherein the coupler of claim 1 , wherein the female coupler further comprises a locking member.4. The tool of claim 3 , wherein the mandrel body portion comprises a necked-down region.5. The tool of claim 4 , wherein a shape of the necked-down region corresponds to a shape of the locking member.6. The tool of claim 2 , wherein the release sleeve has a first position allowing a radial movement of locking member and a second position blocking said movement.7. The tool of claim 6 , wherein the coupler further comprises a lever extending through a nosepiece slot to permit an operator to move the lever to shift the release sleeve from the second position to the first position.8. The tool of claim 6 , wherein the mandrel is freely rotatable about an axis of the tool when the release sleeve is in the second position.9. The tool ...

PNEUMATIC HAMMER DEVICE AND A METHOD PERTAINING TO A PNEUMATIC HAMMER DEVICE

A pneumatic hammer including a connector for connection to an external compressed air source and a striking mechanism. The striking mechanism includes a housing and a piston arranged for reciprocating motion in the housing. The striking piston has front and rear piston portions. The piston and the housing form front and rear spaces. A compressed air conduit is arranged in airflow communication with the front space via a second passage in the housing, at which second passage a first valve is arranged. There is an intermediate space between the front and rear piston portions and the housing. The control unit is alternately subjected to air pressure of the rear space with respect to the intermediate space during reciprocating motion of the piston. The control unit controls the first valve based on air pressure to alternately supply compressed air to the front space and achieving a return movement of the piston. 1. A pneumatic hammer device , comprising:a connector configured to be connected to a compressed air conduit of an external compressed air source, anda striking mechanism comprising a striking mechanism housing and a striking piston arranged for reciprocating motion in said striking mechanism housing the striking piston having a front piston portion and a rear piston portion, wherein the front piston portion affects an insert tool arranged at the hammer device, wherein the striking piston and the striking mechanism housing together form a front space and a rear space wherein the front space is limited rearwards by the front piston portion and the rear space is limited forwards by the rear piston portion, wherein said compressed air conduit is arranged in air flow communication with the rear space via a first passage in the striking mechanism housing and wherein said compressed air conduit is arranged in air flow communication with the front space via a second passage in the striking mechanism housing, at which second passage a first valve is arranged, wherein ...

HAND-HELD POWER TOOL

A hand-held power tool includes a tool holder for holding a chiseling tool, a machine housing (), and a striking mechanism () including a striking body () moved on a longitudinal axis () for exerting strikes on the tool in an impacting direction. A damper () is used for stopping the striking body (). The damper () includes a ring made up of multiple elastic beads situated along a circumferential direction around the longitudinal axis (). 114-. (canceled)15. A hand-held power tool comprising:a tool holder for holding a chiseling tool;a striking mechanism including a striking body moved on a longitudinal axis for exerting strikes on the tool in an impacting direction;a damper for stopping the striking body, the damper including a ring made up of a plurality of elastic beads situated in a circumferential direction around the longitudinal axis.16. The hand-held power tool as recited in wherein the beads each include a first front side pointing in the impacting direction and a second front side pointing against the impacting direction claim 15 , at least one of the first and second front sides being inclined along the circumferential direction in relation to a plane perpendicular to the longitudinal axis.17. The hand-held power tool as recited in wherein the one front side is inclined and ellipsoidal.18. The hand-held power tool as recited in wherein the one front side is inclined and convexly curved.19. The hand-held power tool as recited in wherein the beads are spheroidal.20. The hand-held power tool as recited in wherein the beads are spherical.21. The hand-held power tool as recited in wherein centers of gravity of adjacent beads in the circumferential direction are situated at a distance and the one front side is inclined and has a radius of curvature along the circumferential direction around the longitudinal axis claim 16 , the radius of curvature being between 25% and 100% of the distance.22. The hand-held power tool as recited in wherein claim 15 , under a ...

HANDHELD DEVICE FOR DRIVING A STATOR BLADE INTO A BLADE GROOVE

A handheld device for driving a stator blade into a blade groove arranged on a stator blade support of a turbine and which contains at least one stem element, having a striking device for carrying out individual hammer strikes of specifiable forces onto the stator blade to be driven, a trigger device for manually triggering an individual hammer strike to be carried out using the striking device, a detecting device for detecting respective installation force of the stator blade to be driven, the installation force being achieved with an individual hammer strike carried out using the striking device, an electronic analyzing device for analyzing each installation force of the stator blade to be driven, the installation force being detected using the detecting device, and at least one signaling device for signaling the installation force of the stator blade to be driven, the installation force being detected using the detecting device. 1. A handheld device for driving a stator blade into a blade groove , arranged on a stator blade support of a turbine and containing at least one caulking element , comprising:a striking device for performing individual hammer blows of a predetermined strength on the stator blade to be driven in,a trigger device for manually triggering an individual hammer blow to be performed with the striking device,a recording device for recording the inserting force, for the stator blade to be driven in, obtained in each case with an individual hammer blow performed with the striking device,an electronic evaluation device for evaluating the inserting force, for the stator blade to be driven in, recorded in each case with the recording device, andat least one signaling device for signaling the inserting force, for the stator blade to be driven in, recorded with the recording device.2. The handheld device as claimed in claim 1 ,wherein the signaling device is configured to visually signal the inserting force.3. The handheld device as claimed in claim 1 ...

POWER TOOL

A rational technique which can realize vibration suppression and reduction of unstable driving elements of a striker. A representative power tool, a first compensation mechanism moves a swinging mechanism from a swinging mechanism reference position to a swinging mechanism moving position and moves a cylinder to a second side, thereby increasing the volume of an air chamber. Further, the second compensation mechanism moves an intermediate element from an intermediate reference position to an intermediate element moving position and moves a striking element to the second side, thereby compensating the volume of the air chamber. 1. A power tool , which performs a prescribed operation on a workpiece by linearly moving a tool accessory , comprising:a body, which body houses:a tool holder for holding the tool accessory,a driving motor,a rotary shaft member that is rotationally driven by the driving motor, anda striking mechanism that linearly drives the tool accessory along with rotation of the rotary shaft member, wherein the striking mechanism includes:a cylinder that is configured to be allowed to linearly reciprocate,a striking element that is housed within the cylinder and configured to be allowed to linearly reciprocate within the cylinder,an air chamber that is defined by the striking element and the cylinder,a swinging mechanism that is connected to the cylinder and reciprocates the cylinder by swinging along with rotation of the rotary shaft member, andan intermediate element that is housed within the tool holder and configured to be allowed to linearly reciprocate, andthe power tool is configured to cause the striking element to collide with the intermediate element via pressure fluctuations caused in the air chamber by reciprocating movement of the cylinder and to further cause the intermediate element to collide with the tool accessory, thereby linearly moving the tool accessory, wherein:the power tool defines a longitudinal direction parallel to a cylinder ...

HAND-HELD POWER TOOL GEARBOX CLOSURE AND HAND-HELD POWER TOOL

A hand-held tool transmission closure having a base body for closing a transmission housing opening of a transmission housing of a hand-held power tool, in particular a hammer drill or a combi-hammer, wherein the hand-held power tool transmission closure includes an air channel, through which air is able to flow into and out of the transmission housing, and wherein the hand-held power tool transmission closure includes a pressure valve arranged in the air channel, via which an excess pressure occurring in the transmission housing can be reduced. 110-. (canceled)11. A hand-held power tool gearbox closure comprising:a base body for closing a gearbox housing opening of a gearbox housing of a hand-held power tool;an air channel, an air mass capable of flowing into and out of the gearbox housing through the air channel; anda pressure valve situated in the air channel, and via which an overpressure occurring in the gearbox housing being relievable via the pressure valve.121. The hand-held power tool gearbox closure as recited in claim wherein the pressure valve is situated inside the hand-held power tool gearbox closure and designed as an elastic hose element , a relief of an overpressure occurring in the gearbox housing being accompanied by an elastic deformation of the hose element.13. The hand-held power tool gearbox closure as recited in wherein the pressure valve designed as the elastic hose element is installed in a pretensioned state.14. The hand-held power tool gearbox closure as recited in further comprising a cover part including ventilation openings claim 12 , the cover part projecting into the base body claim 12 , the pressure valve designed as the elastic hose element being supported both against the base body and against the cover part.15. The hand-held power tool gearbox closure as recited in wherein an underpressure occurring in the gearbox housing is equalizable with the aid of the pressure valve.16. The hand-held power tool gearbox closure as recited in ...

Pneumatic Tool with Shock Absorber

The present disclosure provides a pneumatic tool with shock absorber. The pneumatic tool has a main body which is adapted for an air supply to be connected thereto. With the air supply, a striker disposed in the main body reciprocates to generate impulse and vibration. A damper, including an elastic member and an airtight compartment, is disposed at the rear end of the reciprocation path of the striker. Therefore, the elastic member and the airtight compartment can absorb the shock produced backwardly by the striker. The vibration and the noise can be reduced for avoiding occupational injury caused thereby. 1. A pneumatic tool with shock absorber , comprising:a main body, having a head portion and a handle, the head portion being constructed with a receiving space, the handle having a switch disposed thereon, the switch being operated for allowing or stopping air from flowing into the receiving space;a valve assembly, disposed in the receiving space, the valve assembly having a first valve and a second valve, which are constructed with an air passage, the air passage communicating with the receiving space, the first valve having a first channel which communicates with the air passage, the first valve and the second valve being constructed with a second channel which communicates with the air passage, the valve assembly having a lamella which is disposed between the first valve and the second valve, the first valve being constructed with a compartment;a cylinder, disposed in the receiving space, the cylinder having a cavity and a striker, the cavity being located corresponding to the first channel, the striker being received in the cavity, the cylinder having a connecting channel communicating with the cavity and the second channel, leading reciprocation of the striker driven by the air flowed into the cavity via the first channel or the second channel;a damper, comprising an elastic member and a pressing member which are disposed to the compartment, the ...

Shock Absorption Structure of the Pneumatic Tool

A shock absorption structure of a pneumatic tool, the pneumatic tool contains: a body, a cylinder, a gas valve unit, an impact element, and an elastic unit. The body includes an air channel and a cavity having a closing face, an opening, and an air chamber. The body also includes a first orifice and a second orifice. The cylinder includes a sliding room, a contacting fringe, a defining cutout, and an air inlet. The gas valve unit is fixed between the sliding room and the contacting fringe. The impact element is disposed in the sliding room and is pushed by the high pressure gas to reciprocately move. The elastic unit includes an elastic pushing force and is secured in the air chamber so as to push against the closing face and the contacting fringe and to push the cylinder to move away from the grip handle. 1. A shock absorption structure of a pneumatic tool , the pneumatic tool comprising:a body including an air channel configured to flow high pressure gas, and the body including a cavity defined in the body, the cavity having a closing face formed on a first end thereof, and the cavity having an opening defined on a second end of the body opposite to the first end of the cavity, the body also including a first orifice passing through the cavity, and the body including a second orifice communicating with the air channel and the cavity, the first orifice accommodating a limitation element, a part of which extends to the cavity;a cylinder movably fixed in the cavity of the body and a part of the cylinder extending out of the body from the opening of the cavity, the cylinder including a sliding room defined in the cylinder, and the cylinder including a contacting fringe arranged on one end of the cylinder facing the closing face of the cavity of the fitting sleeve, the cavity of the body having an air chamber defined between the contacting fringe and the closing face, the cylinder having a defining cutout formed on an outer wall of the cylinder corresponding to the ...

STRIKING HAND-HELD TOOL

A hand-held tool has a tool holder for holding a striking tool on a working axis, an electric motor, and a striking mechanism. The striking mechanism has an exciter piston moved by the motor, a striker coupled to the exciter piston by a pneumatic chamber arranged between the exciter piston and the striker, and a ram arranged in the striking direction of the striker piston. In a working position the ram rests counter to the striking direction against a stop. A stationary shut-off valve has a valve seat and an elastic shut-off member, wherein the elastic shut-off member in a relaxed state has a basic form which lifts from the valve seat, and wherein in the working position the elastic shut-off member is forced by the ram into a tensioned form resting against the valve seat. 1. (canceled)2. The hand-held power tool according to claim 8 , wherein the shut-off body and/or the valve seat cannot move along the working axis relative to the percussion mechanism.3. The hand-held power tool according to claim 8 , wherein the shut-off body comprises a resilient ring claim 8 , and the valve seat is arranged at a radial spacing from the resilient ring claim 8 , the shut-off body being arranged along the working axis such that the rivet header moves into the shut-off body in the working position claim 8 , and the shut-off body is resiliently spread apart by the rivet header until the shut-off body is resting against the valve seat.4. The hand-held power tool according to claim 8 , wherein the shut-off valve comprises a resilient ring having a circumference claim 8 , the resilient ring being divided into the valve seat and the shut-off body by a notch running around the circumference of the ring claim 8 , and a cut that extends along the working axis being provided in the shut-off body.5. The hand-held power tool according to claim 8 , wherein the pneumatic chamber comprises a throttle opening for exchanging air between the pneumatic chamber and an area around the hand-held power ...

Percussive power tool

A percussion mechanism contains a guide tube, an exciter piston, a hammer, a pneumatic chamber for coupling the hammer to the motion of the exciter piston, a striker, and a seat for the striker. The hammer has a striking point, defined by a striking surface of the striker when the striker lies against the seat. A check valve has an outlet opening and a closing mechanism for closing the check valve against an air flow from the interior of the guide tube. The outlet opening is arranged in such a way that the outlet opening is closed by the hammer during striking operation and otherwise is open.

Impact block, carrier member and impart tool using sames

An impact block, a carrier member mating the impact block and an impact tool using the impart block and the mating carrier member are disclosed. The impact block includes an annular body including an outer race, an inner race, a positioning portion provided with the outer race for bump fit and extending in the axial direction of the annular body and one or multiple impact portion provided with the inner race. By using the impact tool composed of the above impact block and the matching carrier member, the vibration generated by the striking process can be reduced, the striking efficiency is improved, the service life is increased, the component composition is simplified, the assembly procedure is quick and simple.

Driving tool with a device for preventing leak of oiling material (variants)

FIELD: driving tools. SUBSTANCE: driving tool contains body, wherein mechanism chamber is positioned, with oiling material injected into internal space of aforementioned chamber; electric motor, mounted in the body, speed changing mechanism, positioned in the mechanism chamber and connected to electric motor for transferring and switching rotary movement, created by electric engine, connection generation unit, positioned in the body, and connecting passage forming element, positioned in connection forming unit for providing connecting passage which connects internal space of chamber of mechanism to space which surrounds the mechanism chamber. Structural element of connecting passage is used to create at least one obstacle, limiting leak of oiling material into space, surrounding the mechanism chamber. EFFECT: prevented leakage of oiling material, increased durability and lasting quality of tool. 2 cl, 8 dwg

Percussion tool

FIELD: process engineering. SUBSTANCE: invention relates to percussion-type tools. Proposed tool comprises tool holder, motor with output shaft and is arranged behind tool holder, percussion tool, step-down shaft and step-down countershaft. Output shaft is oriented in direction perpendicular to toll holder axis. Percussion mechanism comprises piston and hammer. Piston is made reciprocate by crank mechanism driven by output shaft rotation. Crank mechanism comprises crankshaft and gear fitted at shaft lower part to engage with said output shaft. Step-down shaft is arranged parallel with output shaft, between the latter and tool holder. Step-down shaft comprises driven gear and bevel pinion. Driven gear is rotated by output shaft. Bevel pinion serves to transmit rotation to tool holder. Step-down countershaft is arranged between output shaft and step-down shaft. Output shaft extends beyond step-down shaft driven gear. Crankshaft is arranged behind output shaft. EFFECT: decreased vibration. 8 cl, 2 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 2 477 212 (13) C2 (51) МПК B25D 16/00 B25D 11/12 (2006.01) (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (21)(22) Заявка: 2009139226/02, 22.02.2008 (24) Дата начала отсчета срока действия патента: 22.02.2008 (73) Патентообладатель(и): МАКИТА КОРПОРЕЙШН (JP) R U Приоритет(ы): (30) Конвенционный приоритет: 26.03.2007 JP 2007-079708 26.03.2007 JP 2007-079709 (72) Автор(ы): АОКИ Йоносуке (JP) (43) Дата публикации заявки: 10.05.2011 Бюл. № 13 2 4 7 7 2 1 2 (45) Опубликовано: 10.03.2013 Бюл. № 7 (56) Список документов, цитированных в отчете о поиске: JP 53155501 U, 06.12.1978. JP 2006026854 A, 02.02.2006. JP 2006181646 A, 13.07.2006. EP 1728596 A1, 06.12.2006. SU 1038476 A2, 30.08.1983. 2 4 7 7 2 1 2 R U (86) Заявка PCT: JP 2008/053076 (22.02.2008) C 2 C 2 (85) Дата начала рассмотрения заявки PCT на национальной фазе: 26.10.2009 (87) Публикация заявки РСТ: WO 2008/126480 (23.10.2008) Адрес ...

PERCUSSION INSTRUMENT

1. Ударный инструмент, содержащий: ! инструментодержатель, имеющий передний конец, выполненный с возможностью удержания наконечника; ! двигатель, имеющий выходной вал и расположенный сзади инструментодержателя, при этом выходной вал ориентирован в направлении, перпендикулярном оси инструментодержателя; ! ударный механизм, содержащий поршень и ударник, причем поршень выполнен с возможностью совершения возвратно-поступательного перемещения посредством кривошипного механизма, приводимого в действие согласно вращению выходного вала, а ударник выполнен с возможностью перемещения синхронно с поршнем под действием воздушной пружины; ! понижающий вал, расположенный в положении, параллельном выходному валу между выходным валом и инструментодержателем, при этом понижающий вал содержит ведомую шестерню и коническую шестерню, причем ведомая шестерня выполнена с возможностью получения вращения, передаваемого от выходного вала, а коническая шестерня выполнена с возможностью передачи вращения к инструментодержателю; и !промежуточный понижающий вал, расположенный в положении спереди выходного вала, сзади понижающего вала и параллельно выходному валу, при этом промежуточный понижающий вал выполнен с возможностью понижения скорости вращения, передаваемого от выходного вала, и передачи вращения с пониженной скоростью к понижающему валу, ! причем двигатель расположен в таком положении, что выходной вал простирается вверх за приводной шестерней понижающего вала, посредством чего двигатель расположен ближе к оси инструментодержателя. ! 2. Инструмент по п.1, в котором промежуточный понижающий вал содержит первую РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 2009 139 226 (13) A (51) МПК B25D 16/00 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ, ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ (12) ЗАЯВКА НА ИЗОБРЕТЕНИЕ (71) Заявитель(и): МАКИТА КОРПОРЕЙШН (JP) (21)(22) Заявка: 2009139226/02, 22.02.2008 Приоритет(ы): (30) Конвенционный приоритет: 26.03.2007 JP 2007-079708 26.03.2007 JP 2007-079709 (72) Автор ...

POWER TOOLS (OPTIONS)

1. Электроинструмент, выполненный с возможностью приведения в действие рабочего органа, прикрепляемого к электроинструменту, содержащий:приводной механизм, выполненный с возможностью приведения в действие рабочего органа и имеющий подвижный элемент, включающий в себя подвижный вал;камеру для приводного механизма, образующую внутреннее пространство, в котором размещается приводной механизм; исмазочный материал, расположенный во внутреннем пространстве камеры для приводного механизма, для смазки приводного механизма,при этом подвижный элемент включает в себя первое отверстие, второе отверстие и проход, который соединяет первое отверстие со вторым отверстием, так что проход сообщается с внутренним пространством камеры для приводного механизма посредством первого отверстия и дополнительно сообщается с внешним пространством камеры для приводного механизма посредством второго отверстия, отличающийся тем, что,по меньшей мере, часть прохода расположена внутри подвижного вала.2. Электроинструмент по п.1, отличающийся тем, что подвижный элемент образован в качестве вращательного элемента, имеющего вращательный вал, причем вращательный вал образован в качестве подвижного вала,при этом, по меньшей мере, часть прохода расположена внутри вращательного вала.3. Электроинструмент по п.2, отличающийся тем, что проход соединен с первым отверстием таким образом, что он проходит в радиальном направлении вращательного элемента.4. Электроинструмент по п.2 или 3, отличающийся тем, что проход соединен со вторым отверстием таким образом, что он проходит в осевом направлении вращательного элемента.5. Электроинструмент по п.4 РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (51) МПК B25D 16/00 (13) 2012 140 965 A (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ЗАЯВКА НА ИЗОБРЕТЕНИЕ (21)(22) Заявка: 2012140965/02, 25.09.2012 (71) Заявитель(и): МАКИТА КОРПОРЕЙШН (JP) Приоритет(ы): (30) Конвенционный приоритет: (72) Автор(ы): АОКИ Йоносуке (JP) 04.10.2011 JP 2011-219804; 04.10.2011 JP 2011- ...

Mechanised tool

FIELD: process engineering. SUBSTANCE: invention relates to mechanize, primarily hand-held tool comprising case, motor, rpm variator and extending element. Said case houses mechanism chamber filled with lubricant. Motor is arranged inside the case. RPM variator is arranged in mechanism chamber and is coupled with motor for conversion and transmission of rotation produced by motor. Said extending element extends from the case into mechanism chamber in lengthwise direction. Extending element has connection channel with one hole open at extending element front end and another hole open to mechanism chamber external space. At least, one part of extending element wherein connection channel is made is made of resilient material. EFFECT: prevent oil leaks from mechanism chamber. 11 cl, 10 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 2 483 864 (13) C2 (51) МПК B25F 5/00 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (21)(22) Заявка: 2010152755/02, 23.12.2010 (24) Дата начала отсчета срока действия патента: 23.12.2010 (72) Автор(ы): АБЕ Сатоши (JP), ОКУБО Такахиро (JP) (73) Патентообладатель(и): ХИТАЧИ КОКИ КО., ЛТД. (JP) R U Приоритет(ы): (30) Конвенционный приоритет: 25.12.2009 JP 2009-294810 (43) Дата публикации заявки: 27.06.2012 Бюл. № 18 2 4 8 3 8 6 4 (45) Опубликовано: 10.06.2013 Бюл. № 16 (56) Список документов, цитированных в отчете о поиске: RU 2311282 С2, 27.11.2007. ЕР 1364747 А2, 26.11.2003. SU 1535711 A, 15.01.1990. GB 2413300 А, 26.10.2005. DE 10217701 A1, 06.11.2003. 2 4 8 3 8 6 4 R U (54) МЕХАНИЗИРОВАННЫЙ ИНСТРУМЕНТ (57) Реферат: Изобретение относится к механизированным инструментам, в частности ручным, и содержит корпус, электродвигатель, механизм изменения скорости и выступающий элемент. В корпусе размещена камера механизма, во внутреннее пространство которой введен смазочный материал. Электродвигатель размещен в корпусе. Механизм изменения скорости расположен в камере механизма и соединен с электродвигателем ...

Power tool

Die Werkzeugmaschine hat eine Werkzeugaufnahme (2) zum Aufnehmen eines meißelnden Werkzeugs auf einer Arbeitsachse (11), einen Motor ( 5) und ein von dem Motor (5) angetriebenes pneumatisches Schlagwerk (6). Das Schlagwerk ( 6) hat einen auf der Arbeitsachse (11) geführten und mit einer in Schlagrichtung (12) weisenden Schlagfläche ( 23) versehenen Schläger (14), einen von dem Motor (5) angetriebenen Erregerkolben ( 13) und eine zwischen Erregerkolben (13) und Schläger (14) ausgebildete pneumatische Kammer (18) zum Ankoppeln des Schlägers (14) an die Bewegung des Erregerkolbens (13). Der Schläger (14) hat einen die Schlagfläche (23) bildenden ersten Teilkörper (35), einen zweiten Teilkörper (34) und ein Federelement (33). Der erste Teilkörper (35) ist relativ zu dem zweiten Teilkörper (35) längs der Arbeitsachse (11) beweglich. Der zweite Teilkörper ( 34) hat eine in Schlagrichtung (12) weisende Stoßfläche ( 37). Der erste Teilkörper ( 35) hat eine der Stoßfläche (37) gegenüberliegende Prallfläche (36) zum Aufnehmen eines Stoßes des zweiten Teilkörpers (34) auf den ersten Teilkörper ( 35). Das Federelement (33) treibt den ersten Teilkörper (35) relativ zu dem zweiten Teilkörper (34) in Schlagrichtung (12) in eine Grundstellung, in welcher die Stoßfläche (37) von der Prallfläche (36) durch einen Spalt (32) getrennt ist. The machine tool has a tool holder (2) for receiving a chiseling tool on a working axis (11), a motor (5) and a pneumatic striking mechanism (6) driven by the motor (5). The percussion mechanism (6) has a hammer (14) guided on the working axis (11) and provided with a striking surface (23) in the direction of impact (12), an exciter piston (13) driven by the motor (5) and an intermediate between exciter pistons (15). 13) and bat (14) formed pneumatic chamber (18) for coupling the racket (14) to the movement of the exciter piston (13). The racket (14) has a striking part (23) forming the first part body (35), a second part body (34) and a spring ...

Hand-held power tool

The power tool has a tool holder (2) for holding a chiselling tool on a working axis (11), a motor (5), and a pneumatic percussion mechanism (6) driven by the motor (5). The percussion mechanism (6) has a percussion element (14) guided on the working axis (11) and provided with a percussion surface (23) pointing in the percussion direction (12), an exciter piston (13) driven by the motor (5), and a pneumatic chamber (18) formed between the exciter piston (13) and the percussion element (14) for coupling the percussion element (14) to the movement of the exciter piston (13). The percussion element (14) has a first partial body (35) forming the percussion surface (23), a second partial body (34), and a spring element (33). The first partial body (35) is moveable along the working axis (11) relative to the second partial body (35). The second partial body (34) has an abutment surface (37) pointing in the percussion direction (12). The first partial body (35) has an impact surface (36) opposite the abutment surface (37) for receiving an impact of the second partial body (34) on the first partial body (35). The spring element (33) drives the first partial body (35) relative to the second partial body (34) in the percussion direction (12) into a starting position, in which the abutment surface (37) is separated from the impact surface (36) by a gap (32).

Hand held power machine

工具机具有用于容纳在工作轴线(11)上凿取用工具的工具容纳部(2)、驱动器(5)和由驱动器(5)驱动的气动撞击机构(6)。撞击机构具有在工作轴线(11)上被引导的且设有朝冲击方向(12)的冲击面(23)的撞击器(14)、由驱动器(5)驱动的激励活塞(13)和构造在激励活塞(13)和撞击器(14)间的用于使撞击器(14)与激励活塞(13)的运动耦合的气动腔(18)。撞击器(14)具有构成冲击面(23)的第一子体(35)，第二子体(34)和弹簧元件(33)。第一子体(35)相对于第二子体(34)沿着工作轴线(11)可运动。第二子体(34)具有朝冲击方向(12)的碰撞面(37)。第一子体(35)具有与碰撞面(37)对置的挡面(36)用于容纳第二子体(34)到第一子体(35)上的冲击。弹簧元件(33)驱使第一子体相(35)相对于第二子体(34)沿着冲击方向(12)到碰撞面(37)与挡面(36)通过间隙(32)分开的原始位置中。

Power tool

提供了一种动力工具，比如锤钻，其中用于改善壳体的接合面的密封性的诸如O型圈的密封元件安装在壳体的接合面上，所述壳体容纳施用有诸如润滑脂的润滑剂的部分。尽管已经提供了一种通过中断润滑剂的毛细作用来防止润滑剂泄漏的常规技术，但是需要进一步改善密封性以抵挡大量的润滑剂。本实用新型在不依赖于诸如O型圈的密封元件的情况下确保了高密封性。施用氟基涂层以向将筒状件(24)、曲柄盖(27)和齿轮壳体(28)接合至容纳润滑剂涂覆部分的曲柄壳体(22)的接合部(S24、S27、S28)赋予为拒油性部。由于接合部(S24、S27、S28)的拒油性，因此使润滑剂形成为小滴并且防止了润滑剂从小间隙泄漏。

Power tool e.g. hammer drill has mechanism housing whose two inlets of passages are located at specific position without immersing in lubricant, during tool operation

The power tool (1) comprises an electric motor housing (30) that accommodates a mechanism housing (30a) in which lubricant is injected. Two passages (2,3) are provided in the mechanism housing, in which the inlets and outlets are respectively opened towards the inner side and outer side of the mechanism housing. The inlets of the passages of the mechanism housing are located at a position without immersing in the lubricant, during the tool operation.

PERFORATOR HAMMER OR MOTOR-DRIVEN BURINEUR

L'INVENTION CONCERNE UN MARTEAU PERFORATEUR OU BURINEUR ENTRAINE PAR MOTEUR. IL PORTE UN CARTER DANS LEQUEL IL EST PREVU UN VOLUME 15 RECEVANT UNE TRANSMISSION 2 ET UN MECANISME DE PERCUSSION A MATELAS D'AIR 3, CE VOLUME 15 ETANT REMPLI EN PARTIE D'HUILE DE LUBRIFICATION ET ETANT EN COMMUNICATION AVEC L'ATMOSPHERE PAR L'INTERMEDIAIRE D'UNE TUBULURE D'EQUILIBRAGE DE PRESSION 26B; L'EMBOUCHURE 26D DU TROU 26C DE LA TUBULURE D'EQUILIBRAGE DE PRESSION 26B EST ENTOUREE PAR UN BOITIER 28, 29 FORMANT UNE CHAMBRE DE STABILISATION 31 ET IL EST DISPOSE DE MANIERE A NE PAS ETRE NOYE PAR DE L'HUILE DE LUBRIFICATION DANS AUCUNE POSITION DE L'APPAREIL. THE INVENTION RELATES TO A PUNCH HAMMER OR CHISEL DRIVEN BY MOTOR. IT CARRIES A CASING IN WHICH A VOLUME 15 IS PROVIDED RECEIVING A TRANSMISSION 2 AND AN AIR MATTRESS PERCUSSION MECHANISM 3, THIS VOLUME 15 BEING FILLED IN PART WITH LUBRICATION OIL AND BEING IN COMMUNICATION WITH THE ATMOSPHERE THROUGH L 'INTERMEDIATE OF A PRESSURE BALANCING TUBING 26B; THE MOUTH 26D OF THE HOLE 26C OF THE PRESSURE BALANCING TUBING 26B IS SURROUNDED BY A HOUSING 28, 29 FORMING A STABILIZATION CHAMBER 31 AND IS ARRANGED SO THAT IT WILL NOT BE FLOODED BY LUBRICATING OIL IN ANY POSITION OF THE APPLIANCE.

PERFORATOR HAMMER OR MOTOR-DRIVEN BURINER

Impact hammer with vibration damper

Handheld tool gear closure and handheld machine tool

Handwerkzeuggetriebeverschluss (10) mit einem Grundkörper (1) zum Verschließen einer Getriebegehäuseöffnung (70) eines Getriebegehäuses (80) einer Handwerkzeugmaschine (100), insbesondere eines Bohrhammers oder Kombihammers, wobei der Handwerkzeuggetriebeverschluss (10) einen Luftkanal (L) aufweist, durch den eine Luftmasse (LM) in das und aus dem Getriebegehäuse (80) strömen kann, und wobei der Handwerkzeuggetriebeverschluss (10) ein im Luftkanal (L) angeordnetes bidirektionales Druckventil (3) aufweist, über das sowohl ein im Getriebegehäuse (80) auftretender Überdruck abbaubar als auch ein im Getriebegehäuse (80) auftretender Unterdruck abbaubar ist. Hand tool transmission closure (10) with a base body (1) for closing a transmission housing opening (70) of a transmission housing (80) of a hand tool (100), in particular a hammer drill or combi hammer, wherein the hand tool transmission closure (10) has an air duct (L) through which a Air mass (LM) in and out of the transmission housing (80) can flow, and wherein the hand tool transmission closure (10) arranged in the air duct (L) bidirectional pressure valve (3) via which both in the transmission housing (80) occurring overpressure degradable than Also, a negative pressure occurring in the transmission housing (80) is degradable.

Rotary hammer

一种旋转锤和动力工具。该旋转锤可在空转模式和锤击模式下工作并且包括：一个壳体和一个位于壳体中且具有一个前部的套筒。一个锤体位于套筒内且可以在锤击位置和空转位置之间相对于该套筒运动。在一些方案中，锤体卡持器组件位于沿着轴线与套筒前部相邻的位置上，以便可释放地将锤体保持在空转位置中。该锤体卡持器组件包括一个可以与锤体摩擦接合摩擦件和一个至少局部围绕该摩擦件的减振件。当利用一个力使锤体向空转位置运动时，减振件吸收该力的至少一部分，并且该构件对锤体施加摩擦力。

Percussive power tool

A percussion mechanism contains a guide tube, an exciter piston, a hammer, a pneumatic chamber for coupling the hammer to the motion of the exciter piston, a striker, and a seat for the striker. The hammer has a striking point, defined by a striking surface of the striker when the striker lies against the seat. A check valve has an outlet opening and a closing mechanism for closing the check valve against an air flow from the interior of the guide tube. The outlet opening is arranged in such a way that the outlet opening is closed by the hammer during striking operation and otherwise is open.

Vibration reduction apparatus for power tool and power tool incorporating such apparatus

Intensifying cylinder

An intensifier is operable to supply force and includes a housing defining a cavity. A ram is slidably positioned within the cavity and partially extends from the housing. The ram is moveable between retracted and extended positions along a longitudinal axis. First and second links are rotatably coupled to one another about an axis of rotation and are selectively moveable between retracted positions where the axis of rotation is not axially aligned with the ram and partially extended positions where the axis of rotation is axially aligned with the ram. The intensifier includes a plurality of power pistons axially aligned with each other and the ram. The power pistons are selectively operable to provide an output force to the ram when the first and second links are in the partially extended positions.

Vibration reduction apparatus for power tool and power tool incorporating such apparatus

COMPRESSED AIR PIECH HAMPER DEVICE

Head valve system for air spring power tool

A power tool includes an air spring cylinder. A piston is movably positioned within the cylinder. A head valve assembly of the power tool includes a flapper valve configured to seal the air spring cylinder from an air accumulator when the flapper valve is in a non-firing position.

Pneumatic drill device

Pneumatic drill device (1) comprising an external casing (3), an assembly consisting of a cylinder and a moving piston driving a bit (9), a device for supplying the cylinder with compressed air, an air exhaust device, and an operation control device, in which said external casing (3) is made up of two complementary parts (3a) able to be fitted together to enclose, besides the cylinder and piston assembly, the cylinder supply, air exhaust and operation control devices.

Machine tool with a chamber for lubricating agent and a pressure equalisation device for said chamber

The invention relates to a machine tool, in particular a hand-operated hammer drill, comprising a chamber (10) with lubricating agent and a pressure equalising device (12, 14, 34) for the chamber (10), in the region of a bearing (16, 18, 36) for a rotating driven component (20, 22, 54). According to the invention, the bearing (16, 18, 36) forms at least part of a lubricating agent seal (24, 26, 38) for the pressure equalisation device (12, 14, 34), by means of which a pressure in the chamber (10) may be equilibrated.

TOOL FOR CRUSHING A LARGE SILICON PIECE

1. Инструмент для дробления крупного куска кремния, содержащий средства привода пневматического поршня для привода поршня, который установлен в корпусе таким образом, что он имеет возможность перемещаться между втянутой позицией и выдвинутой позицией, и приводится в движение между втянутой позицией и выдвинутой позицией посредством давления воздуха; направляющую трубу, присоединенную к корпусу и идущую в направлении перемещения поршня; и боек, в котором, когда поршень располагается во втянутой позиции, передний конец поршня заходит в задний концевой участок направляющей трубы и располагается позади заднего конца направляющей трубы, и задний концевой участок бойка вставлен с возможностью перемещения в передний концевой участок направляющей трубы, и, когда поршень приводится в движение из втянутой позиции в выдвинутую позицию, передний конец поршня сталкивается с задним концом бойка. ! 2. Инструмент по п.1, в котором инструмент содержит направляющий элемент для бойка, который располагается спереди относительно переднего конца направляющей трубы и отдельно от него, в направляющем элементе сформировано направляющее сквозное отверстие, идущее в направлении перемещения поршня, и передний концевой участок бойка вставлен в направляющее сквозное отверстие. ! 3. Инструмент по п.2, в котором на промежуточном участке в продольном направлении бойка сформирован фланец, и боек может предпочтительно перемещаться между втянутой позицией, в которой задняя поверхность фланца контактирует с передним концом направляющей трубы, и выдвинутой позицией, в которой передняя поверхность фланца контактирует с задней поверхно РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 2009 118 407 (13) A (51) МПК B02C 1/00 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ, ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ (12) ЗАЯВКА НА ИЗОБРЕТЕНИЕ (21), (22) Заявка: 2009118407/03, 11.10.2007 (71) Заявитель(и): ТОКУЯМА КОРПОРЕЙШН (JP) (30) Конвенционный приоритет: 16.10.2006 JP 2006-281827 26.04.2007 JP 2007-116471 (87) Публикация ...

Machine tool with a chamber for lubricating agent and a pressure equalisation device for said chamber

The invention relates to a machine tool, in particular a hand-operated hammer drill, comprising a chamber (10) with lubricating agent, inside which at least one rotating driven component (12) is arranged, and a pressure equalisation device (14) for the chamber (10), with a rotating driven spinning component (16), screening a pressure equalisation channel (18) arranged downstream from the above, in relation to the flow in the ventilating direction. According to the invention the spinning component (16) is fixed to the rotating driven component (12).

Vibration reducing device for electric tool and electric tool incorporating such vibration reducing device

Sealing ventilation device and the equipment including it

本发明涉及一种密封通气装置及包括其的设备。所述密封通气装置包括：密封部分，所述密封部分具有密封表面和非密封表面，所述密封表面用于在所述密封部分安装在待密封部位时提供密封，所述非密封表面包括至少两个经所述密封表面隔离的表面，所述至少两个表面对应两个需要相互通气的空间；通气引导部分，所述通气引导部分在所述密封部分的至少一个非密封表面处伸出；以及通气孔，所述通气孔穿过所述密封通气装置，并且所述通气孔的两个开口分别连通所述两个需要相互通气的空间，其中至少一个开口位于所述通气引导部分上并且远离所述密封部分。本发明能够在提供换气的同时有效改善润滑油泄漏，以大幅增加设备的使用寿命。

Pressed air drive type

MECHANIZED TOOL

1. Механизированный инструмент (1), содержащий: ! - корпус (10, 20, 30, 30А), в котором размещена камера (30а) механизма, причем во внутреннее пространство указанной камеры введен смазочный материал; ! - электродвигатель, установленный в корпусе; ! - механизм (40) изменения скорости, расположенный в камере механизма и соединенный с электродвигателем для преобразования и передачи вращательного движения, создаваемого электродвигателем; и ! - выступающий элемент (50), который выступает из корпуса в камеру механизма и в котором выполнен соединительный канал (50а), имеющий одно отверстие, открывающееся на переднем конце выступающего элемента в его продольном направлении, и другое отверстие, открывающееся в пространство, внешнее по отношению к указанной камере механизма, причем по меньшей мере часть выступающего элемента, в котором выполнен соединительный канал, выполнена из эластичного материала. ! 2. Механизированный инструмент (1) по п.1, в котором выступающий элемент имеет первый элемент (51) формирования канала, расположенный на переднем конце выступающего элемента, и второй элемент (52) формирования канала, расположенный со стороны основания выступающего элемента, причем: ! - в первом элементе формирования канала выполнен первый канал (51b), открывающийся во внутреннее пространство камеры механизма, представляющий собой одну часть соединительного канала, ! - во втором элементе формирования канала выполнен второй канал (52а, 152а), открывающийся во внешнее по отношению к камере механизма пространство и сообщающийся с первым каналом, при этом второй канал представляет собой другую часть соединительного канала, и ! - по меньшей мере о РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 2010 152 755 (13) A (51) МПК B25F 5/00 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ЗАЯВКА НА ИЗОБРЕТЕНИЕ (71) Заявитель(и): ХИТАЧИ КОКИ КО., ЛТД. (JP) (21)(22) Заявка: 2010152755/02, 23.12.2010 Приоритет(ы): (30) Конвенционный приоритет: 25.12.2009 JP 2009-294810 Адрес для ...

Impact block for power tool impact assembly and retainer cooperating therewith

一种用于动力工具冲击组件的冲击块以及与其配合的保持件与动力工具冲击组件，冲击块具有一环状本体，该本体具有一外环面与一内环面，该外环面设有一可凹凸配合的定位部，该定位部沿该本体的轴向延伸，该内环面设有至少一冲击部；藉由上述冲击块与相互配合的保持件所组成的冲击组件，即可达成减少打击过程所产生的震动，提升打击效率，同时增加使用寿命，组成构件较为简化，组装较为快速与简便等技术功效。

Power tool

一种动力工具，包括壳体、电动机、变速机构和突出部件。壳体在其中限定机构腔。滑润剂被封入到机构腔的内部。电动机容纳在壳体中。变速机构设置在机构腔中并连接至电动机，用于变速传递电动机的旋转。突出部件沿突出方向从壳体突出至机构腔。突出部件提供连通通道，其具有沿突出方向在突出部件的前端侧敞开的一个开口和向机构腔的外部敞开的另一个开口。突出部件的至少一部分提供连通通道并由弹性材料制成。

Motor driven drilling or chipping device

In a motor driven drilling or chipping device, a housing forms a sealed housing space containing a gear arrangement and an air cushion propulsion mechanism driven by the gear arrangement. The housing space is partially filled with lubricating oil. A pressure equalizing nozzle has a bore connecting the interior of the housing space to the ambient atmosphere outside the housing. The port at the end of the nozzle bore communicating with the housing space is enclosed by wall members forming a stilling chamber. The stilling chamber is in communication with the sealed housing space and is arranged so that regardless of the position of the drilling or chipping device, it is not flooded by the lubricating oil and the lubricating oil does not flow out of the stilling chamber through the nozzle bore.

Pneumatic chisel hammer

本发明涉及一种特别地用于粉碎多晶硅的气动凿锤，包括：‑具有双作用气动气缸的壳体，其中布置带有凿锤的活塞以沿纵向轴线可移动，该气缸具有工作侧部分和返回侧部分，返回侧部分包括阻尼装置和压力平衡开口，且工作侧部分包括端部位置阻尼和压缩空气连接件；‑连接到气缸的返回侧部分的压缩空气储存器；以及‑具有密封气室的凿锤导向壳体。本发明还涉及一种用于粉碎多晶硅棒的装置，该装置包括至少一个这种类型的气动凿锤。

Pneumatic tool with shock absorbing structure uses the double buffering effect from the gas and the elastic member to reduce the shock force of the pneumatic tool

一種氣動工具之減震結構，其握柄係設有可供輸入氣體之容室，並於容室內裝配有氣閥及氣缸，該氣閥係變換第一、二流道內之氣體推移氣缸之腔室內的撞擊件作往復位移，以撞擊氣缸前端裝配之工具件執行預設作業，該減震結構係於氣閥之前端設有氣室，並於氣室內裝配彈性件，該彈性件之前方配置一於氣室內位移之壓抵件，該壓抵件並由撞擊件壓抵驅動位移，於撞擊件後移撞擊該壓抵件時，可利用壓抵件壓縮氣室內之氣體而提供氣壓式緩衝作用，並同時壓縮彈性件而提供彈力式緩衝作用，使得減震結構利用氣體及彈性件之雙重緩衝作用而降低氣動工具之震動力，達到有效減震及避免操作者手部震傷之實用效益。

Percussion tool

FIELD: process engineering. SUBSTANCE: invention relates to percussion-type tools. This tool comprises dynamic vibration damper and vibrator. The latter is driven by the motor to make dynamic damper work by application of external forced thereto. Said damper comprises weight linearly displacing in axial direction of the hammer and resilient element to apply shifting force to said weight in axial direction of said hammer. Vibrator comprises camshaft driven by said motor, off-centred cam and two pins. At least one camshaft axial end runs in the bearing. Pins are linearly driven by off-centred cam for actuation of dynamic damper. One of said pins abutting on off-centred cam is fitted in bearing housing across camshaft axis. EFFECT: easier assembly. 6 cl, 13 dwg

Hand-held power tool

The power tool has a tool holder (2) for holding a chiselling tool on a working axis (11), a motor (5), and a pneumatic percussion mechanism (6) driven by the motor (5). The percussion mechanism (6) has a percussion element (14) guided on the working axis (11) and provided with a percussion surface (23) pointing in the percussion direction (12), an exciter piston (13) driven by the motor (5), and a pneumatic chamber (18) formed between the exciter piston (13) and the percussion element (14) for coupling the percussion element (14) to the movement of the exciter piston (13). The percussion element (14) has a first partial body (35) forming the percussion surface (23), a second partial body (34), and a spring element (33). The first partial body (35) is moveable along the working axis (11) relative to the second partial body (35). The second partial body (34) has an abutment surface (37) pointing in the percussion direction (12). The first partial body (35) has an impact surface (36) opposite the abutment surface (37) for receiving an impact of the second partial body (34) on the first partial body (35). The spring element (33) drives the first partial body (35) relative to the second partial body (34) in the percussion direction (12) into a starting position, in which the abutment surface (37) is separated from the impact surface (36) by a gap (32).

Hand-held machine

FIELD: process engineering. SUBSTANCE: invention relates to hand-held machines, particularly, to perforators and pneumatic chippers Hand machine case 12 accommodates transmission 14 with power train element 80 and compensator 18 for equalising pressure in transmission 14 that doubles as power train element support 80. Pin 24 with compensation hole 20 is arranged between power train 14 and motor 16. EFFECT: perfected design. 8 cl, 2 dwg

Power tool incorporating vibration reduction apparatus

Power tool

A power tool (1) includes a housing (10,20,30,30A), an electric motor, a speed change mechanism (40), and a protrusion member (50). The housing defines therein a mechanism chamber. A lubricant is inserted in an interior of the mechanical chamber. The electric motor is accommodated in the housing. The speed change mechanism (40) is disposed in the mechanism chamber and connected to the motor for shift-transmitting rotation of the motor. The protrusion member (50) protrudes to the mechanism chamber from the housing in a protrusion direction. The protrusion member provides a communication passage (50a) that has one opening open at a leading end side of the protrusion member in the protrusion direction and another opening open to an exterior of the mechanical chamber. At least a part of the protrusion member provides the communication passage and is made from a resilient material.

Driving member for electric tools

Hand tool with a striking mechanism

Eine Handwerkzeugmaschine ist mit einem Schlagwerk ausgestattet, das einen in einem Führungsrohr (2) axial hin und her beweglichen Schläger (1) aufweist, wobei ein eine Kraft auf den Schläger (1) ausübender Federmechanismus (4) vorhanden ist, womit der Schläger (1) in eine Bewegung in Richtung auf ein in der Handwerkzeugmaschine einsteckbares Werkzeug (3) versetzbar ist. Das Schlagwerkzeug erzeugt bei einer relativ kleinen Schlagfrequenz eine sehr hohe Einzelschlagenergie dadurch, dass der Schläger (1) nach jedem Schlag in eine Bewegung gegen die Kraft des Federmechanismus (4) versetzt wird, um diesen zu spannen, und dass der Schläger (1) nach dem Spannen des Federmechanismus (4) schlagartig wieder freigegeben wird, so dass er in Richtung des Werkzeugs (3) fliegt. A portable power tool is equipped with a percussion mechanism having a racket (1) axially reciprocating in a guide tube (2), a spring mechanism (4) exerting a force on the racket (1), whereby the racket (1 ) can be displaced into a movement in the direction of a tool (3) which can be inserted in the handheld power tool. The impact tool generates at a relatively small impact frequency very high single impact energy by the club (1) after each stroke in a movement against the force of the spring mechanism (4) is added to tension this, and that the bat (1) after the tensioning of the spring mechanism (4) is released suddenly, so that it flies in the direction of the tool (3).

A pneumatic hammer device and a method pertaining to a pneumatic hammer device

A pneumatic hammer device comprises connecting means for connection to a compressed air conduit of an external compressed air source and a striking mechanism comprising a housing and a piston for performing reciprocating motion in the housing. The piston has front and rear piston portions. The piston and housing together form front and rear spaces. The compressed air conduit is in fluid communication with the front space via a second passage in the housing. A valve is arranged in the second passage. An intermediate space is formed between the front piston portion and the rear piston portion and the housing. A controller is alternately subjected to air pressure of the rear space and air presssure of the intermediate space during reciprocating motion of the piston, and controls the valve based on the air pressures to alternately supply compressed air to the front space and achieve return movement of the piston.

Striking hand-held tool

The invention relates to a striking hand-held tool (1) having a tool holder (2) for holding a striking tool (4) on a working axis (3), an electric motor (8), and a striking mechanism (5). The striking mechanism (5) has an exciter (13) moved by the electric motor (8), a striker (14) coupled to the exciter (13) by means of a pneumatic chamber (16) arranged between the exciter (13) and the striker (14), and a ram (15) arranged in the striking direction (6) of the striker (14). In a working position the ram (15) rests counter to the striking direction (6) against a stop (22). The pneumatic chamber (16) has a radial opening (30). A stationary shut-off valve has a valve seat (34, 43) and an elastic shut-off member (35, 44), wherein the elastic shut-off member (35, 44) in a relaxed state has a basic form which lifts off partially or completely from the valve seat (34, 43), and wherein in the working position the elastic shut-off member (35, 44) is forced by the ram (15) into a tensioned form resting completely against the valve seat (34, 43). The non-return valve (29) is connected on the input side to the stationary shut-off valve (28, 42) and on the output side to the radial opening (30).

Power tool

It is an object of the present invention to provide an improved technique for preventing leakage of lubricant from an accommodating space that houses a driving mechanism, while regulating the internal pressure of the accommodating space in a power tool. A representative power tool includes a power tool body, a tool bit, a driving mechanism, a lubricant, an accommodating space, a passage and a lubricant leakage preventing region. The accommodating space is disposed in the body to house the driving mechanism and is hermetically sealed. The passage has an accommodating space side opening and an outside opening. The passage extends, starting from the accommodating space side opening, in a direction away from the outside opening. Then, the passage turns around and extends toward the outside opening. Further, the lubricant leakage preventing region is provided with the passage to prevent the lubricant from leaking from the inside to the outside of the accommodating space. According to the invention, the length of the passage can be made longer and the lubricant must travel a longer distance before leaking out. Therefore, a higher effect of preventing leakage can be obtained.

Impact tool

It is an object of the invention to provide a technique that contributes to further improvement of an impact tool (101). A representative impact tool includes a motor (111), a tool body (103) that houses the motor (111), a dynamic vibration reducer (151) and a driving mechanism part that is driven by the motor (111) and forcibly drives the dynamic vibration reducer (151) by applying an external force other than vibration of the tool body (103) to the dynamic vibration reducer (151), during hammering operation. The electrical components including the connecting terminal (140a,140b), the power terminal (144), the power switch (131) and the control unit (147) are integrally mounted to a housing (140c) and thus form an electrical component assembly (140).

smith

Hand machine tool with a pressure compensation device

Eine Druckausgleichseinrichtung ist zwischen einem Motrorraum (3) und einem ein Schmiermittel enthaltenden Getrieberaum (1) einer Handwerkzeugmaschine angeordnet. Eine von einem im Motorraum (3) befindlichen Motor (7) angetriebene Antriebswelle (9) erstreckt sich in den Getrieberaum (1) hinein und steht dort mit einer Getriebewelle (23) in Eingriff, welche in der Nähe einer den Motorraum (3) vom Getrieberaum (1) trennenden, mit mindestens einer Durchtrittsöffnung (57) versehenen Zwischenwand (5) endet. Eine wenig aufwendige und platzsparende Druckausgleichseinrichtung besteht aus mindestens einem im Inneren der Getriebewelle (23) verlaufenden Kanal (51, 53), der einerseits in den Getrieberaum (1) hinein und andererseits in der Nähe der mindestens einen Durchtrittsöffnung (57) der Zwischenwand (5) mündet. A pressure compensation device is arranged between a motor space (3) and a gear space (1) containing a lubricant of a handheld power tool. A drive shaft (9), driven by a motor (7) located in the engine compartment (3), extends into the gear compartment (1) and engages there with a gear shaft (23) which is close to the engine compartment (3) Transmission wall (1) separating, with at least one passage opening (57) provided intermediate wall (5) ends. A less complex and space-saving pressure compensation device consists of at least one channel (51, 53) running in the interior of the gear shaft (23), which on the one hand into the gear chamber (1) and on the other hand in the vicinity of the at least one passage opening (57) of the intermediate wall (5 ) flows out.

Machine tool with a chamber for lubricating agent and a pressure equalization device for said chamber

The present invention is directed to a machine tool, in particular to a hand-operated hammer drill, having a compartment ( 10 ) containing lubricant in which at least one rotationally drivable component ( 12 ) is mounted and having a device ( 14 ) for compensating the pressure in the compartment ( 10 ), the device having a rotationally drivable centrifugal component ( 16 ) which shields at least one pressure-compensation channel ( 18 ) disposed downstream from it, in terns of fluid mechanics, in the venting direction of the compartment ( 10 ). It is proposed that the centrifugal component ( 16 ) be mounted in a torsionally fixed manner on the rotationally drivable component ( 12 ).

Compressed-air-driven chisel

本發明的課題為提供一種可以使夾針器小徑化的加壓空氣驅動式鑿子。 　　其解決手段是在汽缸內於軸線方向可動地設置的夾針器(22)的外圍面設置後退驅動用環狀凹部(22a)，在夾針器(22)前進時透過該後退驅動用環狀凹部(22a)朝後退驅動室(26)供應加壓空氣。

Handheld machine tool

手持工具机(1)具有在工作轴(11)上容纳凿钻工具(4)的工具容纳部(2)、驱动器(5)及撞击机构(6)。撞击机构(6)包括在工作轴(11)上引导的撞击器(15)、由驱动器(5)周期性驱动的激发器(16)及将撞击器(15)的运动耦合在激发器(16)的周期运动上的气动腔室(19)。撞击器(15)沿撞击方向(12)在撞击点(28)撞击在工具(4)或中间撞击器(31)上。激发器(16)在远离撞击点(28)的第一止点(25)和接近撞击点(28)的第二止点(26)之间受驱动。气动的腔室(19)形成在撞击器(15)和激发器(16)的朝向撞击器(15)的端侧(24)之间。气密封装的壳体(34)具有内部(37)，其由激发器(16)的背离撞击器(15)的端侧(41)封闭，通过能由撞击器(15)封闭的第一阀(38)与气动的腔室(19)相连。另外，内部(37)与能由激发器(16)封闭的第二阀(39)与气动的腔室(19)相连。第一阀(38)接近于撞击点(28)而第二阀(39)接近于第一止点(25)。

A pneumatic hammer device and a method pertaining to a pneumatic hammer device

The invention relates to a pneumatic hammer device (100, 200) comprising connecting means (156, 256) arranged for connection to a compressed air conduit (102, 202) of an external compressed air source and a striking mechanism (105, 205), which striking mechanism (105, 205) comprises a striking mechanism housing (210) and a striking piston (230) arranged for reciprocating motion in said striking mechanism housing (210), the striking piston (230) having a front piston portion (232) and a rear piston portion (236), wherein the striking piston (230) and the striking mechanism housing (210) together form a front space (240) and a rear space (250), wherein said compressed air conduit (102, 202) is arranged in air flow communication with the front space (240) via a second passage (242) in the striking mechanism housing (210), at which second passage (242) a first valve means (246) is arranged. The striking piston (230) is formed such that an intermediate space (260) is formed between the front piston portion (232) and the rear piston portion (236) and the striking mechanism housing (210), wherein the control means (280) are arranged to alternately be subjected to an air pressure of said rear space (250) respectively said intermediate space (260) during the reciprocating motion of the striking piston (230), and wherein said control means (280) are arranged to control said first valve means (246) based on said air pressure to alternately supply compressed air to the front space (240) and achieving a return movement of the striking piston (230). The invention also relates to a method pertaining to a pneumatic hammer device (100, 200).

Chiselling machine tool

本发明涉及一种凿削的工具机。手持式工具机具有气动的冲击机构(6)。冲击机构包括马达驱动的激振器(12)、引导管(18)和冲击器(13)。在引导管(18)内在激振器(12)与冲击器(13)之间构成的空气弹簧(15)由引导管(18)的内表面(19)在圆周上压力密封地封闭。激振器(12)和/或冲击器(13)构成为一由内表面(19)引导的活塞。例如激振器和冲击器可以构成活塞，激振器构成为活塞而冲击器刚性连接于引导管地成杯形地构成，或冲击器构成为活塞而激振器刚性连接于引导管地构成。引导管(18)的内表面(19)设有多个成型的凹陷部(24、35)。

Hand-held power tool device such as drilling and/or percussion hammer, comprises a transmission unit, a vent port, and a membrane module having a diaphragm which carries out partial air-permeable closing of the vent port

The hand-held power tool device (10a) comprises a transmission unit (12a), a vent port (14a), and a membrane module (16a) having a diaphragm (18a) which carries out partial air-permeable closing of the vent port. The membrane is partially made of plastic material. The membrane comprises several pores. The diaphragm comprises a capillary and two layers. The membrane is partially formed as a liquid-repellent structure. The membrane module has a filter unit.

Electrically driven tool

FIELD: electricity. SUBSTANCE: invention relates to electrically driven tools. The electrically driven tool comprises a drive mechanism, enclosed containing space, a channel that ensures interconnection of the containing space and environment, a filtration chamber mounted in the channel, an inner passage in the channel in order to communicate the filtration chamber with the containing space, an outer passage in the channel in order to communicate the filtration chamber with environment, a filter and a choke. The enclosed containing space contains the drive mechanism and lubricant to lubricate the drive mechanism. The filter is placed in the filtration chamber to absorb the lubricant. The filter is spaced at distance from peripheral edge of the outer passage opening, which is open to the filtration chamber so that space is formed from the side of the filtration chamber opening. The choke is mounted in the above space in order to restrict air flow coming to the outer passage through the filter. The choke comprises a plate element overlapped on top of the filter; the element restricts the passage between the filter and the above space. The plate element is formed of circular elastic material. The choking passage is limited by peripheral surface of the plate element and peripheral wall surrounding the outer peripheral surface and ensures interaction of the filter with the above surface. EFFECT: preventing lubricant leaks and adjusting inner pressure in containing space of the drive mechanism. 3 cl, 5 dwg

ELECTROPORTATIVE HAND MACHINE EQUIPPED WITH A HAMMER MECHANISM SUCH AS DRILL OR PERFORATOR

Machine électroportative à main comportant un mécanisme de frappe composé d'un percuteur (1) mobile axialement suivant un mouvement alternatif dans un tube de guidage (2). Un mécanisme à ressort (4) exerce une force sur le percuteur (1) pour le déplacer vers un outil (5) engagé dans la machine. Le mécanisme de frappe génère à une fréquence de frappe relativement faible et une très forte énergie élémentaire de frappe. Pour cela après chaque frappe, le percuteur (1) est entraîné contre la force développée par le mécanisme à ressort (4) pour tendre celui-ci et ensuite le percuteur (1) est libéré brusquement pour partir rapidement en direction de l'outil (3). Electric hand-held machine comprising a striking mechanism composed of a striker (1) movable axially in a reciprocating movement in a guide tube (2). A spring mechanism (4) exerts a force on the striker (1) to move it towards a tool (5) engaged in the machine. The striking mechanism generates at a relatively low impact frequency and very high elemental impact energy. For this, after each strike, the striker (1) is driven against the force developed by the spring mechanism (4) to tension the latter and then the striker (1) is suddenly released to move quickly towards the tool ( 3).

Percussive power tool pulling device

A pulling tool comprises an air-powered internal anvil and hammer. The pulling tool is attached to the object to be removed. The hammer is urged by pressurized air to repeatedly strike the anvil, which applies a percussive force to the object, progressively removing the object from its housing. A conventional air hammer can be modified into a tool puller by replacing the air hammer bit with a cap, and attaching the object to the rear of the air hammer through a coupler. Alternatively, a cylindrically-shaped collar is slidably secured over a conventional air hammer. A pulling bit slidably communicates with a flanged rod attached to the object to be removed. Operation of the air hammer causes the pulling bit to strike the flange, progressively removing the object from its housing.

PNEUMATIC PERCUSSION TOOL

Hammer

本发明涉及一种锤子,该锤子包括壳体(4,5),在该壳体内设置着:电动机(2);中空主轴(40),在该主轴内设置着在其内进行往复运动的活塞(38)和位于活塞前部处的锤头(58);和金属壳体(42),它至少包围部分主轴(40),因此在主轴和该金属壳体之间形成了充满空气的室。设置有锤子驱动装置(30,32,34),该装置把电动机的旋转驱动转换成活塞的往复运动,并且在主轴的前端上设置工具夹持器体(66),在该夹持器体内,可拆下地安装着工具或者钻头(68),从而进行有限的往复运动。该锤子还包括:减震体(70),它设置在该室内,该减震体通过至少一个弹簧元件(90,98)连接到锤子壳体(4,5)上。设置有至少一个衬垫元件(72a,72b),它使减震体(70)相对于主轴(40)和金属壳体(42)进行定位。

Impact tool

It is an object of the invention to provide a technique that contributes to further improvement of an impact tool. A representative impact tool (101) includes a motor (111), a tool body (103) that houses the motor, a dynamic vibration reducer (151) and a driving mechanism part (171) that is driven by the motor (111) and forcibly drives the dynamic vibration reducer (151) by applying an external force other than vibration of the tool body to the dynamic vibration reducer, during hammering operation. At least one of the dynamic vibration reducer (151) and the driving mechanism part (171) is mounted to the tool body (103) in a form of an assembly into which at least one of a plurality of component parts forming the dynamic vibration reducer (151) and a plurality of component parts forming the driving mechanism part (171) are assembled in advance.

Silicon lump crushing tool

A silicon lump crushing tool comprises a pneumatic piston drive means for driving a piston fitted to a casing from a retreat position to a projection position by air pressure, a guide tube connected to the casing and extending in the movement direction of the piston, and a hammer head. The hammer head is so formed that its rear end is movably inserted into the front end of the guide tube. When the piston is driven from the retreat position to the projection position, the front end of the piston collides with the rear end of the hammer head.

Crust breaker for piercing the crust formed on a metal melting bath

A crust breaker for breaking through the crust (17) formed on a metal melting bath (18) is proposed, with a fluidic double-acting cylinder (10) with a piston rod (14) provided with an impact element (16), and which has two operating chambers (12, 13) separated by a piston (11) and able to be supplied with either a higher (P2) or a lower (P1) fluid pressure by means of a valve assembly (33, 36). The cylinder (10) is provided with a position measuring unit (24). Monitoring means are provided for monitoring a presettable distance-time curve or a presettable speed curve during the forward movement of the impact element (16) towards the crust (17). A control unit (30) is provided to switch over from the lower to the higher fluid pressure after a detectable deviation from the prescribed course, and is connected to the valve assembly (33, 36) for this purpose.

Rotary hammer

Vibration reduction device for electric hammer device

A pneumatic hammer device and a method pertaining to a pneumatic hammer device

The invention relates to a pneumatic hammer device (100, 200) comprising connecting means (156, 256) arranged for connection to a compressed air conduit (102, 202) of an external compressed air source and a striking mechanism (105, 205), which striking mechanism (105, 205) comprises a striking mechanism housing (210) and a striking piston (230) arranged for reciprocating motion in said striking mechanism housing (210), the striking piston (230) having a front piston portion (232) and a rear piston portion (236), wherein the striking piston (230) and the striking mechanism housing (210) together form a front space (240) and a rear space (250), wherein said compressed air conduit (102, 202) is arranged in air flow communication with the front space (240) via a second passage (242) in the striking mechanism housing (210), at which second passage (242) a first valve means (246) is arranged. The striking piston (230) is formed such that an intermediate space (260) is formed between the front piston portion (232) and the rear piston portion (236) and the striking mechanism housing (210), wherein the control means (280) are arranged to alternately be subjected to an air pressure of said rear space (250) respectively said intermediate space (260) during the reciprocating motion of the striking piston (230), and wherein said control means (280) are arranged to control said first valve means (246) based on said air pressure to alternately supply compressed air to the front space (240) and achieving a return movement of the striking piston (230). The invention also relates to a method pertaining to a pneumatic hammer device (100, 200).

Hand tool machine with a pressure relief device

Percussive handheld machine tool

HAND CAR

1. Ручная машина, прежде всего перфоратор и/или отбойный молоток, имеющая корпус (12), внутри которого расположено трансмиссионное отделение (14) по меньшей мере с одним элементом (80) силовой передачи, отличающаяся наличием компенсационного устройства (18), предусмотренного для выравнивания давления в трансмиссионном отделении (14) и служащего, по меньшей мере частично, опорой элемента (80) силовой передачи. ! 2. Ручная машина по п.1, отличающаяся тем, что компенсационное устройство (18) имеет по меньшей мере одно компенсационное отверстие (20). ! 3. Ручная машина по п.2, отличающаяся тем, что компенсационное отверстие (20) по меньшей мере частично соединяет трансмиссионное отделение (14) и двигательное отделение (16). !4. Ручная машина по п.2, отличающаяся тем, что компенсационное отверстие (20) по меньшей мере частично образовано компенсационным каналом (22). ! 5. Ручная машина по п.2, отличающаяся тем, что компенсационное отверстие (20) по меньшей мере частично выполнено сужающимся. ! 6. Ручная машина по п.2, отличающаяся наличием пальца (24), по меньшей мере частично расположенного между трансмиссионным отделением (14) и двигательным отделением (16) и имеющего компенсационное отверстие (20). ! 7. Ручная машина по одному из предыдущих пунктов, отличающаяся тем, что компенсационное устройство (18) содержит по меньшей мере один газопроницаемый сепарационный элемент (26). ! 8. Ручная машина по п.7, отличающаяся тем, что газопроницаемый сепарационный элемент (26) выполнен в виде войлочного элемента (28). ! 9. Ручная машина по п.7, отличающаяся тем, что газопроницаемый сепарационный элемент (26) расположен по меньшей мере частично внутри компенсационного отверст�

Chiseling machine tool

Eine Handwerkzeugmaschine hat ein pneumatisches Schlagwerk 6. Das Schlagwerk beinhaltet einen motorgetriebenen Erreger 12, ein Führungsrohr 18 und einen Schläger 13. Eine innerhalb des Führungsrohrs 18 zwischen dem Erreger 12 und dem Schläger 13 ausgebildete Luftfeder 15 ist von einer Innenfläche 19 des Führungsrohrs 18 umfänglich druckdicht abschlossen. Der Erreger 12 und/oder der Schläger 13 sind als ein von der Innenfläche 19 geführter Kolben ausgebildet. Beispielsweise können Erreger und Schläger als Kolben, der Erreger als Kolben und der Schläger starr mit dem Führungsrohr verbunden topfförmig, oder der Schläger als Kolben und der Erreger starr mit dem Führungsrohr verbunden ausgebildet sein. Eine Innenfläche 19 des Führungsrohrs 18 ist mit einer Vielzahl von eingeformten Vertiefungen 24, 35 versehen ist. The percussion includes a motor-driven exciter 12, a guide tube 18 and a racket 13. A formed within the guide tube 18 between the exciter 12 and the racket 13 air spring 15 is circumferentially pressure-tight from an inner surface 19 of the guide tube 18 abschlossen. The exciter 12 and / or the racket 13 are formed as a piston guided by the inner surface 19. For example, exciters and clubs as a piston, the exciter as a piston and the racket rigidly connected to the guide tube cup-shaped, or the racket as a piston and the exciter can be rigidly connected to the guide tube. An inner surface 19 of the guide tube 18 is provided with a plurality of molded recesses 24, 35.

Toolkit for installing or removing objects

A toolkit includes a rotation member, a driving member and an engaging member. The driving member is assembled in one side of the rotation member. The engaging member is assembled in another side of the rotation member. Wherein the driving member is rotatable relative to the engaging member by rotating the rotation member.

Rotary hammer

一种旋转锤和动力工具。该旋转锤可在空转模式和锤击模式下工作并且包括：一个壳体和一个位于壳体中且具有一个前部的套筒。一个锤体位于套筒内且可以在锤击位置和空转位置之间相对于该套筒运动。在一些方案中，锤体卡持器组件位于沿着轴线与套筒前部相邻的位置上，以便可释放地将锤体保持在空转位置中。该锤体卡持器组件包括一个可以与锤体摩擦接合摩擦件和一个至少局部围绕该摩擦件的减振件。当利用一个力使锤体向空转位置运动时，减振件吸收该力的至少一部分，并且该构件对锤体施加摩擦力。

Vibration reduction device for a power tool and power tool with such a device

Schwingungsverringerungsvorrichtung für eine Bohrhammervorrichtung, mit einem Gehäuse, einem Motor, der in dem Gehäuse angeordnet ist, einem Kolben, der eingerichtet ist, um eine von dem Motor verursachte Hin- und Herbewegung in einer Bohrung auszuführen, und mit einer fliegenden Masse, die in der Bohrung so angeordnet ist, dass die Hin- und Herbewegung des Kolbens in der Bohrung im Betrieb eine Hin- und Herbewegung der fliegenden Masse relativ zu dem Gehäuse hervorruft, um Schläge auf ein Arbeitselement der Hammervorrichtung zu übertragen, wobei die Schwingungsverringerungsvorrichtung umfasst: mindestens eine antreibbare Masse, die angepasst ist, um zumindest teilweise zumindest einen Teil der Bohrung zu umgeben, wobei die zumindest eine antreibbare Masse angepasst ist, um durch den Motor veranlasst zu werden, eine Hin- und Herbewegung auszuführen, um die durch die Hin- und Herbewegung der fliegenden Masse relativ zu dem Gehäuse hervorgerufene Schwingung des Gehäuses zumindest teilweise auszulöschen; zumindest ein Antriebszahnrad, das angepasst ist, um von... A vibration reducing apparatus for a hammer drill apparatus comprising a housing, a motor disposed in the housing, a piston configured to perform a reciprocating motion in a bore caused by the engine, and a flying mass disposed in the housing Bore is arranged so that the reciprocation of the piston in the bore during operation causes a reciprocating motion of the flying mass relative to the housing to transmit shocks to a working element of the hammer device, wherein the vibration reducing device comprises: at least one drivable mass adapted to at least partially surround at least a portion of the bore, wherein the at least one drivable mass is adapted to be caused by the motor to perform a reciprocating motion in order to compensate for the and at least partially extinguishing movement of the flying mass relative to the housing caused oscillation of the housing; at least one drive gear adapted to move from ...

Improvements or related improvements to exhaust valves for pressurized fluid actuated devices

가압된 작업 유체로 작동하는 배기 밸브를 포함하는 장치가 개시되어 있다. 장치는 측벽에 의해 적어도 부분적으로 한정된 작업 챔버를 포함하며, 작업 챔버는 작업 부하를 작업 챔버의 제1 단부로 또는 제1 단부를 향해 유지할 수 있고, 작업 챔버는 작업 챔버의 제1과 대향하는 제2 단부로 또는 제2 단부를 향해 작업 부하를 추진하기 위해 작업 부하의 후면에 작용하도록 작업 유체를 수용한다. 장치는 또한 작업 부하의 전면으로부터 가압 하의 유체를 수용하기 위한 복귀 챔버를 포함하며, 압력은 적어도 부분적으로 제2 단부를 향한 작업 부하의 이동에 의해 발달한다. 복귀 챔버에 유체적으로 연결된 배기 밸브가 또한 제시되며, 배기 밸브는 상시 폐쇄 상태로 바이어싱되어 작업 유체가 작업 챔버를 나가는 것을 방지하지만, 복귀 챔버로부터의 가압 하의 유체의 수용, 및 가압 하의 유체에 의한 작용 시에, 개방되어 작업 유체가 작업 챔버로부터 보다 낮은 압력 위치로 배기될 수 있게 하고, 작업 유체는 작업 챔버의 측벽을 거쳐서 배기 밸브를 통해 배기된다. 다음에, 작업 부하가 제2 단부로부터 제1 단부로 이동할 때 작업 부하의 후면에 축적되는 압력을 제거하거나 감소시키는 장치가 제공된다.

Improvements or related improvements to trigger valves for pressurized fluid actuated devices

장치를 위한 작동 트리거로서, 고압 소스로부터 수용된 고압 작업 유체의 충전물을 유지하기 위한 도즈 챔버, 도즈 챔버를 작업 챔버로부터 밀봉하고 도즈 챔버 내의 충전물을 유지하도록 폐쇄 상태로 바이어싱되는 도즈 밸브, 피스톤에 의해 작동되는 해머로서, 피스톤의 제1 측면에는 구동 챔버가 있고, 제1 측면으로부터 밀봉된 피스톤의 제2 측면에는 트리거 챔버가 있으며, 구동 챔버는 고압 소스로부터 직접 또는 간접적으로 고압 작업 유체를 수용하는, 해머, 트리거 챔버에 고압 작업 유체를 선택적으로 공급하거나 트리거 챔버로부터 고압 작업 유체를 방출하기 위한 트리거 밸브를 포함하거나 구비하며, 이에 따라 해머가 구동 챔버와 트리거 챔버 둘 모두에 고압 작업 유체를 가질 때, 해머는 힘 불균형에 의해 제1 위치에 유지되고, 고압 작업 유체가 트리거 챔버로부터 방출될 때, 해머는 트리거 챔버를 향하여 제2 위치로 또는 제2 위치를 향해 구동되고, 해머는, 제2 위치로 또는 제2 위치를 향해 구동될 때, 도즈 밸브를 가격하여, 도즈 밸브를 안착 해제해서 도즈 챔버와 작업 챔버를 밀봉 해제하고, 따라서 충전물이 작업 챔버로 진입하여 작업 챔버에서 작업을 실행할 수 있게 한다.

Pneumatic impact tool with improved anti-vibration structure

Ein pneumatisches Schlagwerkzeug mit einer verbesserten Vibrationsdämpfungsstruktur, das einen Griff (1) mit einer Ausbuchtung aufweist, wobei in der Ausbuchtung ein Zylinder (2) und ein Luftstromumkehrventil (22) angeordnet sind. Dieser Zylinder (2) ist mit einem Innenrohr (3) verbunden, das eine Ringwand (31) und eine Kammer (32) aufweist, wobei die Ringwand mindestens ein Luftloch (36) aufweist. Innerhalb der Ringwand befindet sich das Luftstromumkehrventil (22) und der Luftstromkanal (33) der Kammer, wobei der Luftstromkanal in der Kammer einen ersten Lufteinlass (34) und einen zweiten Lufteinlass (35) bildet und das Luftstromumkehrventil den Luftstrom so umschalten kann, dass er alternativ in die Kammer eintritt. In der Kammer ist ein eng mit der Ringwand verbundener Hammerkörper (4) angeordnet, wobei sich zwischen dem Mittelteil des Hammerkörpers und der Ringwand ein zylindrischer Spalt (43) befindet. Der Hammerkörper ist mit einem Entlüftungskanal (44) versehen, der mit der Kammer und dem zylindrischen Spalt verbunden ist. Wenn durch den ersten Lufteinlass Hochdruckgas in die Kammer eingespritzt wird, wird der Hammerkörper nach hinten gedrückt und das Hochdruckgas tritt nacheinander durch den Entlüftungskanal, den zylindrischen Spalt und das Luftloch nach Aussen, wodurch die Kraft des zu schiebenden Hammerkörpers verringert wird. A pneumatic percussion tool with an improved vibration dampening structure, comprising a handle (1) with a bulge, a cylinder (2) and an air flow reversing valve (22) being arranged in the bulge. This cylinder (2) is connected to an inner tube (3) which has an annular wall (31) and a chamber (32), the annular wall having at least one air hole (36). Inside the annular wall is the airflow reversing valve (22) and the airflow channel (33) of the chamber, the airflow channel in the chamber forming a first air inlet (34) and a second air inlet (35), and the airflow reversing valve can switch the airflow so that it alternatively enters the ...

Head Valve System for Air Spring Power Tool

A power tool includes an air spring cylinder. A piston is movably positioned within the cylinder. A head valve assembly of the power tool includes a flapper valve configured to seal the air spring cylinder from an air accumulator when the flapper valve is in a non-firing position.