VANE PUMP DEVICE

The vane pump device according to the present invention comprises: a rotor 20 that is subjected to rotational force from a rotating shaft and rotates while supporting a plurality of vanes 30, comprises an arc-shaped curved surface 22 that is centered on the rotating shaft, and in which is formed a rotor recess 24 that is recessed from the curved surface 22 toward a center of rotation C; a cam ring 40 that comprises an inner circumferential surface facing the curved surface 22 of the rotor 20, and that is disposed so as to surround the rotor 20; and an inner plate 50 that is disposed on one end, of the cam ring 40, in the axial direction of the rotating shaft so as to cover an opening of the cam ring 40, and in which is formed an intake inner recession 712 that is recessed further toward the center of rotation C than the curved surface 22 of the rotor 20.

VANE PUMP DEVICE

This vane pump device comprises: a rotor that rotates while supporting a plurality of vanes (30) so as to be movable in a turning radius direction; and a cam ring that has an inner peripheral surface facing an outer peripheral surface of the rotor. The vane pump device transitions to at least a suction step and an ejection step as the volume of a pump chamber defined by the outer peripheral surface of the rotor, the inner peripheral surface of the cam ring, and two adjacent vanes (30) among the plurality of vanes (30) changes in accordance with the rotation of the rotor. The suction step ends at a timing at which the volume of the pump chamber becomes maximum.

VANE PUMP DEVICE

A vane pump device that has: a rotor that supports 10 vanes so as to be movable in the rolling radius direction and rotates same; and a cam ring having an inner circumferential surface facing the outer circumferential surface of the rotor. The vane pump device transitions to a suction step in which hydraulic fluid is sucked into at least a pump chamber and a discharge step in which the hydraulic fluid is discharged from the pump chamber, by the capacity of the pump chamber changing in accordance with the rotation angle, as a result of the distance from the rotational center of the rotor to the inner circumferential surface of the cam ring changing in accordance with the rotation angle of the rotor. A starting angle, being a rotation angle at which the distance starts to increase after segments having the same distance have reached a prescribed rotation angle, has a rotation angle difference of no more than 2.5° relative to a center angle, when the center angle is an angle that equally divides ...

VANE PUMP DEVICE

This vane pump device comprises: a rotor that rotates while supporting a plurality of vanes to be movable in a turning radius direction; and a cam ring that has an inner peripheral surface facing an outer peripheral surface of the rotor. As the distance from the rotation center of the rotor to the inner peripheral surface of the cam ring changes in accordance with the rotation angle of the rotor, the volume of a pump chamber changes in accordance with the rotation angle, whereby the vane pump device transitions to a suction step and an ejection step. A starting-point angle, which is the rotation angle at which the distance starts increasing after sections having the same distance have extended over a prescribed rotation angle, is in a range from a position which is located on an upstream side in a rotation direction with respect to a central angle and at which the proportion of a rotation angle difference between the starting-point angle and the central angle with respect to the interval ...

Vane pump

A back pressure groove which is formed in a plate coming into contact with a side surface of a rotor and is communicated with a high pressure chamber is formed in such a manner as to copy an annular locus drawn by a base end of a vane which slides within a vane groove while coming into slidable contact with a cam surface of a cam ring, at a time when the rotor rotates one time.

VANE PUMP

In a vane pump, when discharge pressures of respective discharge ports are different from each other, an extension length A of a notch groove which is provided in the discharge port in a side of a high discharge pressure is set longer than an extension length B of a notch groove which is provided in the discharge port in a side of a low discharge pressure. 1. A vane pump comprising:a rotor which is connected to a rotating shaft pivoted to an inner portion of a housing so as to rotate;a cam ring which is arranged in such a manner as to surround the rotor in the inner portion of the housing;a plurality of vanes which are slidably arranged in a plurality of vane grooves provided in a radial direction of the rotor;a plurality of pump chambers which are defined by the adjacent vanes around the rotor;a plurality of discharge ports corresponding to the pump chambers carrying out a compression stroke, which are provided to be opposed in a diametrical direction of the rotor; andnotch grooves each of which is extended from a hole edge in an inverse direction to a rotor rotating forward direction of each of the discharge ports to the inverse direction,wherein when discharge pressure of the discharge ports are different from each other, an extension length of the notch groove which is provided in the discharge port in a side of a high discharge pressure is set longer than an extension length of the notch groove which is provided in the discharge port in a side of a low discharge pressure.2. The vane pump according to claim 1 , wherein two vanes which are positioned in both sides while holding a center of the rotor therebetween so as to be opposed are provided on a diameter of the rotor claim 1 , and when the center of the rotor displaces close to the discharge port in the side of the low discharge pressure at a degree of a play with the rotating shaft claim 1 , a timing at which one vane runs into a leading end of the notch groove of the discharge port in the side of the high ...

VANE PUMP DEVICE

A vane pump includes: a rotor configured to rotate under rotational force from a rotary shaft while supporting multiple vanes and including a curved surface portion with an arc shape centered on the rotary shaft and a rotor recess depressed from the curved surface portion toward a rotation center; a cam ring disposed so as to surround the rotor and including an inner peripheral surface facing the curved surface portion of the rotor; and an inner plate disposed on one end of the cam ring in an axial direction of the rotary shaft so as to cover an opening of the cam ring and including a suction inner recess depressed toward the rotation center relative to the curved surface portion of the rotor. 1. A vane pump device comprising:a rotor configured to rotate under rotational force from a rotary shaft while supporting a plurality of vanes, the rotor including a curved surface portion with an arc shape centered on the rotary shaft, the rotor including a first recess depressed from the curved surface portion toward a rotation center;a cam ring disposed so as to surround the rotor, the cam ring including an inner peripheral surface facing the curved surface portion of the rotor; anda one side member disposed on one end of the cam ring in an axial direction of the rotary shaft so as to cover an opening of the cam ring, the one side member including a second recess depressed toward the rotation center relative to the curved surface portion of the rotor.2. The vane pump device according to claim 1 , whereinthe one side member includes an inner portion that constitutes a portion of a suction port on a side thereof closer to the rotation center, the suction port being configured to suction a working fluid into a pump chamber defined by an outer peripheral surface of the rotor, the inner peripheral surface of the cam ring, and two adjacent vanes of the plurality of vanes, andthe second recess is a portion that is a part of the inner portion and depressed toward the rotation ...

Vane pump unit

A vane pump unit assembled into a housing includes a rotor; a plurality of vanes; a cam ring; a first plate; a second plate; a connecting bar that has a first end portion fixed to the first plate, and a second end portion which protrudes from the second plate; and a clip that prevents the second plate and the cam ring from slipping out of the connecting bar. Before the clip is assembled into the housing, the retaining of the clip is positioned at least either between the first plate and the cam ring or between the second plate and the cam ring, in a place where a gap is formed. After the clip is assembled into the housing, the housing interposes the first plate, the cam ring, and the second plate in the axial direction, and the first and second plates are in close contact with the cam ring.

Vane pump

A back pressure groove which is formed in a plate coming into contact with a side surface of a rotor and is communicated with a high pressure chamber is formed in such a manner as to copy an annular locus drawn by a base end of a vane which slides within a vane groove while coming into slidable contact with a cam surface of a cam ring, at a time when the rotor rotates one time.

ベーンポンプユニット

【課題】プレートが歪み難いベーンポンプユニットを提供する。【解決手段】ロータ１０と、複数のベーン２０と、カムリング３０と、第１プレート４０と、第２プレート５０と、一端部６１が第１プレート４０に固定され、他端部６２が第２プレート５０から突出した連結棒６０と、連結棒６０から第２プレート５０及びカムリング３０の脱落を防止するクリップ７１と、を備え、ハウジングに組み付けられるベーンポンプユニット１であって、クリップ７１の止め位置は、ハウジングへの組み付け前において、第１プレート４０及びカムリング３０の間と第２プレート５０及びカムリング３０の間との少なくとも一方に、隙間が形成される位置であり、ハウジングへの組み付け後において、ハウジングは第１プレート４０、カムリング３０及び第２プレート５０を軸方向において挟み、第１プレート４０及び第２プレート５０はカムリング３０に密着する。【選択図】図３

Trim and tilt device for marine vessel propelling machine

Trim and tilt device for marine vessel propelling machine

Trim and tilt device for marine vessel propelling machine

Vane pump unit

A vane pump unit assembled into a housing includes a rotor; a plurality of vanes; a cam ring; a first plate; a second plate; a connecting bar that has a first end portion fixed to the first plate, and a second end portion which protrudes from the second plate; and a clip that prevents the second plate and the cam ring from slipping out of the connecting bar. Before the clip is assembled into the housing, the retaining of the clip is positioned at least either between the first plate and the cam ring or between the second plate and the cam ring, in a place where a gap is formed. After the clip is assembled into the housing, the housing interposes the first plate, the cam ring, and the second plate in the axial direction, and the first and second plates are in close contact with the cam ring.

ベーンポンプ

【課題】 ロータの側面に接するプレートに形成された背圧溝に導かれる吐出圧力が、該プレートを貫通しているロータの回転軸のための中心孔へリークすることを抑制すること。 【解決手段】 ロータ２２の側面に接するプレート３２に形成されて高圧力室５４に連通する背圧溝５７が、ロータ２２が１回転するときに、カムリング３０のカム面３０Ａに摺接してベーン溝２３内を摺動するベーン２４の基端Ｅiが描く環状軌跡に倣うように形成されてなるもの。 【選択図】 図５