JPH0352390U - - Google Patents
Info
- Publication number
- JPH0352390U JPH0352390U JP11405689U JP11405689U JPH0352390U JP H0352390 U JPH0352390 U JP H0352390U JP 11405689 U JP11405689 U JP 11405689U JP 11405689 U JP11405689 U JP 11405689U JP H0352390 U JPH0352390 U JP H0352390U
- Authority
- JP
- Japan
- Prior art keywords
- cam ring
- housing
- rotor
- amount
- eccentricity
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000003247 decreasing effect Effects 0.000 claims 2
- 238000006073 displacement reaction Methods 0.000 claims 2
- 230000002093 peripheral effect Effects 0.000 claims 1
Landscapes
- Details And Applications Of Rotary Liquid Pumps (AREA)
Description
第１図はこの考案の一実施例のベーンポンプの
ポンプカバーを取除いた状態を示す正面図、第２
図ないし第５図は従来例を示すもので、第２図は
従来のベーンポンプのポンプカバーを取除いた状
態を示す正面図、第３図は油室内油圧の変化を示
すグラフ、第４図はカムリングに作用するモーメ
ントの変化を示すグラフ、第５図は油室内油圧に
よるモーメントとリターンスプリングによるモー
メントとの和を示すグラフである。
１１……ベーンポンプ、１２……ハウジング、
１３……ピボツトピン、１４……カムリング、１
５……突起部、１６……コイルスプリング、１７
……ストツパピン、２０……制御油室、２１……
ロータ、２３……ベーン、２４……ベーンリング
、２５……油室、２６……吸入口、２８……吐出
口。
Figure 1 is a front view of a vane pump according to an embodiment of this invention with the pump cover removed;
Figures 5 through 5 show conventional examples. Figure 2 is a front view of a conventional vane pump with the pump cover removed, Figure 3 is a graph showing changes in oil pressure in the oil chamber, and Figure 4 is a graph showing changes in oil pressure in the oil chamber. FIG. 5 is a graph showing changes in the moment acting on the cam ring, and is a graph showing the sum of the moment due to the oil pressure in the oil chamber and the moment due to the return spring. 11... Vane pump, 12... Housing,
13... Pivot pin, 14... Cam ring, 1
5...Protrusion, 16...Coil spring, 17
...Stopper pin, 20...Control oil chamber, 21...
Rotor, 23... vane, 24... vane ring, 25... oil chamber, 26... suction port, 28... discharge port.
Claims (1)
ングの内周面に摺接しかつ半径方向に突出・退入
する複数のベーンを保持したロータと、ベーンの
一側に開口するようハウジングに形成した吸入口
および吐出口とを備え、カムリングを回動させて
その内周面のロータに対する偏心量を変える可変
容量型ベーンポンプにおいて、 前記ハウジングとカムリングとのいずれか一方
に、カムリングの偏心量減少方向への回動時に、
ハウジングとカムリングとのいずれか他方に当接
してカムリングの偏心量減少方向への一定量以上
の回動を規制するストツパを備えていることを特
徴とする可変容量型ベーンポンプ。[Claim for Utility Model Registration] A cam ring housed in a housing, a rotor holding a plurality of vanes that slide on the inner peripheral surface of the cam ring and protrude and retract in the radial direction, and a rotor that has an opening on one side of the vane. A variable displacement vane pump comprising an inlet port and a discharge port formed in a housing, and which rotates a cam ring to change the amount of eccentricity of its inner circumferential surface with respect to the rotor. When rotating in the direction of decreasing amount,
A variable displacement vane pump characterized by comprising a stopper that comes into contact with either the housing or the cam ring to restrict rotation of the cam ring beyond a certain amount in the direction of decreasing eccentricity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11405689U JPH0352390U (en) | 1989-09-28 | 1989-09-28 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11405689U JPH0352390U (en) | 1989-09-28 | 1989-09-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0352390U true JPH0352390U (en) | 1991-05-21 |
Family
ID=31662445
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11405689U Pending JPH0352390U (en) | 1989-09-28 | 1989-09-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0352390U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8142173B2 (en) | 2008-05-22 | 2012-03-27 | Hitachi, Ltd. | Variable displacement vane pump |
-
1989
- 1989-09-28 JP JP11405689U patent/JPH0352390U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8142173B2 (en) | 2008-05-22 | 2012-03-27 | Hitachi, Ltd. | Variable displacement vane pump |
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