JPS58148295U - Capacity control device for variable displacement vane pump - Google Patents
Capacity control device for variable displacement vane pumpInfo
- Publication number
- JPS58148295U JPS58148295U JP4461182U JP4461182U JPS58148295U JP S58148295 U JPS58148295 U JP S58148295U JP 4461182 U JP4461182 U JP 4461182U JP 4461182 U JP4461182 U JP 4461182U JP S58148295 U JPS58148295 U JP S58148295U
- Authority
- JP
- Japan
- Prior art keywords
- diameter piston
- pump
- cam ring
- capacity
- control device
- 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.)
- Granted
Links
Landscapes
- Details And Applications Of Rotary Liquid Pumps (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
° 第１図は従来の可変容量膨油圧ポンプの容量制御装
置によるポンプ吐出圧力の曲線図、第２図は本発明装置
の１例の線図、第３図は本発明装置によるポンプ吐出圧
力の曲線図である。
１・・・可変容量形ベーンポンプ、２・・・大径のピス
トン、３・・・小径のピストン、４・・・カムリング、
５・・・シーケンス弁、６・・・回路、７・・・第１絞
り、８・・・チェック弁、９・・・第２絞り。° Fig. 1 is a curve diagram of the pump discharge pressure by the capacity control device of a conventional variable displacement expansion hydraulic pump, Fig. 2 is a curve diagram of an example of the device of the present invention, and Fig. 3 is a curve diagram of the pump discharge pressure by the device of the present invention. It is a curve diagram. 1... Variable displacement vane pump, 2... Large diameter piston, 3... Small diameter piston, 4... Cam ring,
5... Sequence valve, 6... Circuit, 7... First throttle, 8... Check valve, 9... Second throttle.
Claims (1)
とこれに対向する小径のピストン３とで押されて移動す
るカムリング４により制御自在に・ 構成し、該小
径のピストン３にポンプ容量の減少側に該カムリング４
を作動すべくポンプ吐出圧を作用させると共に該大径の
ピストン２にポンプ容量の増大側に該カムリング４を作
動すべくシーケンス弁５を介してポンプ吐出圧を作用さ
せ、該シーケンス弁５が該ポンプ吐出圧により作動され
ると該大径のピストン２にタンク圧が作用するようにし
たものに於て、該シーケンス弁５から該大径のピストン
２へ連らなる回路６に、第１絞り７と該ピストン２から
該シーケンス弁５への流体の流通を許容するチェック弁
８とを順次設けると共にこれらと並列に第１絞り７より
も開口面積の大きい第２絞り９を設けて成る可変容量形
ベーンポンプの容量制御装置。The capacity of the variable displacement vane pump 1 is increased by the large diameter piston 2.
and a cam ring 4 which is pushed and moved by a small-diameter piston 3 opposing the cam ring 4, and a cam ring 4 is attached to the small-diameter piston 3 on the side where the pump capacity decreases.
Pump discharge pressure is applied to the large diameter piston 2 to operate the cam ring 4 to increase the pump capacity, and the sequence valve 5 acts on the large diameter piston 2 to increase the pump capacity. In a device in which tank pressure acts on the large-diameter piston 2 when activated by the pump discharge pressure, a first restrictor is connected to the circuit 6 leading from the sequence valve 5 to the large-diameter piston 2. 7 and a check valve 8 that allows fluid to flow from the piston 2 to the sequence valve 5 are sequentially provided, and a second throttle 9 having a larger opening area than the first throttle 7 is provided in parallel therewith. Capacity control device for vane pumps.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4461182U JPS58148295U (en) | 1982-03-31 | 1982-03-31 | Capacity control device for variable displacement vane pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4461182U JPS58148295U (en) | 1982-03-31 | 1982-03-31 | Capacity control device for variable displacement vane pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58148295U true JPS58148295U (en) | 1983-10-05 |
| JPS626306Y2 JPS626306Y2 (en) | 1987-02-13 |
Family
ID=30055662
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4461182U Granted JPS58148295U (en) | 1982-03-31 | 1982-03-31 | Capacity control device for variable displacement vane pump |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58148295U (en) |
-
1982
- 1982-03-31 JP JP4461182U patent/JPS58148295U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS626306Y2 (en) | 1987-02-13 |
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