JPH0231237B2 - - Google Patents
Info
- Publication number
- JPH0231237B2 JPH0231237B2 JP57230464A JP23046482A JPH0231237B2 JP H0231237 B2 JPH0231237 B2 JP H0231237B2 JP 57230464 A JP57230464 A JP 57230464A JP 23046482 A JP23046482 A JP 23046482A JP H0231237 B2 JPH0231237 B2 JP H0231237B2
- Authority
- JP
- Japan
- Prior art keywords
- housing
- ring
- plate
- cam ring
- high pressure
- 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.)
- Expired - Lifetime
Links
- 230000002093 peripheral effect Effects 0.000 claims description 5
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
- Power Steering Mechanism (AREA)
- Rotary Pumps (AREA)
- Details And Applications Of Rotary Liquid Pumps (AREA)
Description
【発明の詳細な説明】
（技術分野）
本発明は例えばパワーステアリング用として使
用されるベーンポンプに関するものである。DETAILED DESCRIPTION OF THE INVENTION (Technical Field) The present invention relates to a vane pump used, for example, for power steering.
（従来技術）
従来のパワーステアリング用ポンプは第１図乃
至第３図に示す。第１図はプレツシヤープレート
３とカムリング４がハウジングとの間に輪方向に
多少の〓間を与えられて高圧室１内部に挿入され
たコイルスプリング２により図中左方に押圧され
ている。そのため、コイルスプリング２の位置が
プレツシヤープレート３の吐出口部分に位置する
ので高圧室１内での流路抵抗が大きくなるという
問題点があつた。(Prior Art) A conventional power steering pump is shown in FIGS. 1 to 3. In Fig. 1, a pressure plate 3 and a cam ring 4 are pressed to the left in the figure by a coil spring 2 inserted into a high pressure chamber 1 with some distance between the pressure plate 3 and the housing in the ring direction. . Therefore, since the coil spring 2 is located at the discharge port portion of the pressure plate 3, a problem arises in that the flow path resistance within the high pressure chamber 1 becomes large.
又第２図、第３図ではロータ８のベーン５下部
穴６へ高圧油を導く高圧油導入穴７がコイルスプ
リング２の内奥部に位置し、高圧油導入穴７への
高圧の導入を防げるためベーン５の径方向外方へ
の押圧力が低下し、ポンプの吐出性能に影響を及
ぼすという欠点があつた。 In addition, in FIGS. 2 and 3, the high pressure oil introduction hole 7 that guides high pressure oil to the lower hole 6 of the vane 5 of the rotor 8 is located deep inside the coil spring 2. As a result, the radially outward pressing force of the vanes 5 is reduced, which has the disadvantage of affecting the pump's discharge performance.
（目的）
本発明は高圧室のコイルスプリングをなくしプ
レツシヤープレートの吐出口部の流路抵抗を減少
すること及びロータへの高圧油導入穴部への高圧
導入を容易ならしめることを目的とするものであ
る。(Purpose) The purpose of the present invention is to eliminate the coil spring in the high pressure chamber, reduce the flow path resistance at the discharge port of the pressure plate, and facilitate the introduction of high pressure into the high pressure oil introduction hole to the rotor. It is something to do.
（実施例）
第４図は本発明の第１実施例である。ハウジン
グ１０の低圧室側開口部１０ａよりプレツシヤー
プレート１１、カムリング１２、スラストプレー
ト１３を挟着して挿入し、プレツシヤープレート
１１外端部を高圧室１０ｂ内周段部１０ｃに係止
し、開口部１０ａ内周面にリング溝１０ｄを形成
し、外側面（図中左方側）をテーパー面１０d′と
している。１４は止め輪でその外側面はテーパー
面１４ａとなつており、該止め輪１４をリング溝
１０ｄに嵌合し、テーパー面１４ａをテーパー面
１０d′に圧入してスラスト力を発生させ、スラス
トプレート１３をカムリング１２に圧着してい
る。１５はロータ１６のベーン１７の下部穴１８
に通ずるプレツシヤープレート１１の高圧油導入
穴、１９，２０はＯリング、２１はフエイスシー
ル、２２はロータ１６のドライブシヤフトであ
る。(Example) FIG. 4 shows a first example of the present invention. The pressure plate 11, cam ring 12, and thrust plate 13 are sandwiched and inserted through the low pressure chamber side opening 10a of the housing 10, and the outer end of the pressure plate 11 is locked to the inner circumferential step 10c of the high pressure chamber 10b. A ring groove 10d is formed on the inner peripheral surface of the opening 10a, and the outer surface (left side in the figure) is a tapered surface 10d'. Reference numeral 14 denotes a retaining ring whose outer surface is a tapered surface 14a.The retaining ring 14 is fitted into the ring groove 10d, and the tapered surface 14a is press-fitted into the tapered surface 10d' to generate thrust force, and the thrust plate 13 is crimped onto the cam ring 12. 15 is the lower hole 18 of the vane 17 of the rotor 16
19 and 20 are O-rings, 21 is a face seal, and 22 is a drive shaft of the rotor 16.
第５図は本発明の第２実施例で、止め輪２３の
両側面ともテーパー面２３ａ，２３ｂとしてい
る。 FIG. 5 shows a second embodiment of the present invention, in which both sides of the retaining ring 23 are tapered surfaces 23a and 23b.
（効果）
本発明によるとハウジングの低圧室側開口部内
周面にリング溝を形成し、該リング溝に少くとも
一側にテーパー面を有する止め輪を嵌合してスラ
スト力を発生させ、スラストプレートをハウジン
グ内奥部に向つて押圧することによりプレツシヤ
ープレートとスラストプレートによりカムリング
が挟着される。そのため高圧室にコイルスプリン
グを必要とせず、高圧室を流れる高圧油の流れが
円滑になり、又ロータのベーンの下部穴に連通す
る高圧油導入穴へも高圧油が円滑に導かれ、ポン
プ効率及びポンプの吐出性能、例えば低温時の始
動性が良好となり、又ハウジング及びプレツシヤ
ープレート、カムリング、スラストプレートの軸
方向の加工誤差を吸収できるという特徴を有する
ものである。(Effects) According to the present invention, a ring groove is formed on the inner peripheral surface of the opening on the low pressure chamber side of the housing, and a retaining ring having a tapered surface on at least one side is fitted into the ring groove to generate thrust force. By pressing the plate toward the interior of the housing, the cam ring is sandwiched between the pressure plate and the thrust plate. Therefore, there is no need for a coil spring in the high pressure chamber, and the high pressure oil flows smoothly through the high pressure chamber, and is also smoothly guided to the high pressure oil introduction hole that communicates with the lower hole of the rotor vane, improving pump efficiency. It also has the characteristics of improving pump discharge performance, such as good startability at low temperatures, and being able to absorb machining errors in the axial direction of the housing, pressure plate, cam ring, and thrust plate.
第１図は従来のパワーステアリング用ポンプの
正断面図、第２図は第１図の高圧油導入穴部分の
他の従来技術の拡大部分正断面図、第３図は第１
図のベーン部分の側断面図、第４図は本発明の第
１実施例正断面図、第５図は本発明の第２実施例
要部正断面図である。
１０……ハウジング、１０ａ……ハウジングの
低圧室側開口部、１０ｂ……高圧室、１０ｃ……
高圧室内周段部、１０ｄ……リング溝、１０d′…
…テーパー面、１１……プレツシヤープレート、
１２……カムリング、１３……スラストプレー
ト、１４……止め輪、１４ａ……テーパー面、１
５……高圧油導入穴、１６……ロータ、１７……
ベーン、１８……ベーンの下部穴、２３……止め
輪、２３ａ，２３ｂ……テーパー面。
Fig. 1 is a front sectional view of a conventional power steering pump, Fig. 2 is an enlarged front sectional view of another conventional technology of the high pressure oil introduction hole portion of Fig. 1, and Fig. 3 is a front sectional view of a conventional power steering pump.
FIG. 4 is a front sectional view of a first embodiment of the present invention, and FIG. 5 is a front sectional view of essential parts of a second embodiment of the present invention. 10... Housing, 10a... Low pressure chamber side opening of housing, 10b... High pressure chamber, 10c...
High pressure chamber peripheral step, 10d...Ring groove, 10d'...
...Tapered surface, 11...Pressure plate,
12...Cam ring, 13...Thrust plate, 14...Retaining ring, 14a...Tapered surface, 1
5... High pressure oil introduction hole, 16... Rotor, 17...
Vane, 18...Lower hole of vane, 23...Retaining ring, 23a, 23b...Tapered surface.
Claims (1)
楕円形内面を有するカムリングと、該カムリング
内に配設され外周に複数枚のベーンを有するロー
タと、該カムリングを両側より挟持するスラスト
プレートとプレツシヤープレートとよりなり、ハ
ウジング内面に吸入口からの流入油路を形成した
ベーンポンプに於て、前記ハウジングの低圧室側
開口部より前記プレツシヤープレート、カムリン
グとスラストプレートを挟着して挿入し、前記プ
レツシヤープレート外端部を高圧室内周段部に係
止し、前記ハウジングの開口部内周面にリング溝
を形成し、該リング溝に少くとも一側にテーパー
面を有する止め輪を嵌合し、該止め輪とリング溝
によりスラスト力を発生させ、前記スラストプレ
ートを前記カムリングに密着する如くなしたベー
ンポンプ。1. A housing, a cam ring disposed inside the housing and having a substantially elliptical inner surface, a rotor disposed within the cam ring and having a plurality of vanes on the outer periphery, and a thrust plate and pressurer that sandwich the cam ring from both sides. In a vane pump consisting of a plate and having an inflow oil passage from a suction port formed on the inner surface of the housing, the pressure plate, the cam ring and the thrust plate are sandwiched and inserted from the opening on the low pressure chamber side of the housing, The outer end of the pressure plate is locked to a peripheral step of the high pressure chamber, a ring groove is formed on the inner peripheral surface of the opening of the housing, and a retaining ring having a tapered surface on at least one side is fitted into the ring groove. A vane pump in which a thrust force is generated by the retaining ring and the ring groove, and the thrust plate is brought into close contact with the cam ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57230464A JPS59115485A (en) | 1982-12-22 | 1982-12-22 | Pump for power steering |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57230464A JPS59115485A (en) | 1982-12-22 | 1982-12-22 | Pump for power steering |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59115485A JPS59115485A (en) | 1984-07-03 |
| JPH0231237B2 true JPH0231237B2 (en) | 1990-07-12 |
Family
ID=16908249
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57230464A Granted JPS59115485A (en) | 1982-12-22 | 1982-12-22 | Pump for power steering |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59115485A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE468058B (en) * | 1991-03-05 | 1992-10-26 | Saab Automobile | HYDRAULIC PUMP FOR A VEHICLE ENGINE |
| KR0130912Y1 (en) * | 1995-12-27 | 1999-01-15 | 조봉현 | Vane pump |
| JP6020029B2 (en) * | 2012-10-19 | 2016-11-02 | 株式会社豊田自動織機 | Vane type compressor |
-
1982
- 1982-12-22 JP JP57230464A patent/JPS59115485A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59115485A (en) | 1984-07-03 |
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