JPS6293183U

JPS6293183U -

Info

Publication number: JPS6293183U
Application number: JP16688486U
Authority: JP
Priority date: 1986-10-30
Filing date: 1986-10-30
Publication date: 1987-06-13

Description

[Brief explanation of the drawing]

第１図は本考案の一実施例の縦断面図、第２図
は第１図の分割斜視図、第３図は第２図の要部で
ある中子を示す斜視図、第４図はカバープレート
の右側面図、第５図は第２図のカムリングの右側
面図、第６図は第２図のカムリングの右側面図、
第７図は第２図のポンプハウジングの左側面図で
ある。第８図は参考例の縦断面図、第９図は同じ
く分解斜視図である。３１……高圧室、３２……吐出口連絡通路、３
３……鋳物中子、３４……ポンプハウジング、３
５……カムリング、３６……ロータ、３７……カ
バープレート、３８……摺接面、４３……吐出ポ
ート、４０……吸込ポート、４１……きり孔、４
２……環状溝、４３Ａ〜４３Ｅ……吸込口連通通
路、４４，４５……接触面、４６……摺接面、４
７……ピン、４８，４９……オイルシール、５０
……カム面、５１，５２……シール溝、５３……
吸込ポート。 Fig. 1 is a longitudinal sectional view of one embodiment of the present invention, Fig. 2 is a divided perspective view of Fig. 1, Fig. 3 is a perspective view showing the core, which is the main part of Fig. 2, and Fig. 4 is a perspective view of the main part of Fig. 2. A right side view of the cover plate, Fig. 5 is a right side view of the cam ring in Fig. 2, Fig. 6 is a right side view of the cam ring in Fig. 2,
FIG. 7 is a left side view of the pump housing of FIG. 2. FIG. 8 is a longitudinal sectional view of a reference example, and FIG. 9 is an exploded perspective view of the same. 31...High pressure chamber, 32...Discharge port communication passage, 3
3... Casting core, 34... Pump housing, 3
5...Cam ring, 36...Rotor, 37...Cover plate, 38...Sliding surface, 43...Discharge port, 40...Suction port, 41...Drill hole, 4
2... Annular groove, 43A to 43E... Suction port communication passage, 44, 45... Contact surface, 46... Sliding surface, 4
7... Pin, 48, 49... Oil seal, 50
...Cam surface, 51, 52...Seal groove, 53...
suction port.

Claims

[Scope of utility model registration request]

A pump housing that houses a flow control valve, a cam ring that houses a rotor rotated by the pump shaft, a cover plate that forms a suction port, and a low-pressure communication passage that leads from the suction port of the pump housing to the suction port of the cover plate. In the vane pump, a single sealing device is disposed on the joint surface of the cover plate and the pump housing to surround the low pressure communication passage, the cam surface, and the pump high and low pressure region around the cam surface. vane pump.