JPH01149579U

JPH01149579U -

Info

Publication number: JPH01149579U
Application number: JP4678488U
Authority: JP
Priority date: 1988-04-08
Filing date: 1988-04-08
Publication date: 1989-10-17
Anticipated expiration: 2003-04-08
Also published as: JPH077588Y2

Description

[Brief explanation of the drawing]

第１図は、この考案の一実施例を示すベーンポ
ンプの断面図、第２図は、第１図に示すベーンポ
ンプのリヤカバーを外した正面図、第３図は、同
ベーンポンプのサイドプレートの正面図である。１……駆動軸、２……ハウジング、３……リヤ
カバー、４，５……軸受、８……カムリング、９
……ロータ、１０……ベーン、１１……作業室、
１２……サイドプレート、１３……高圧室、２６
……タービン（粘性型ポンプ）、２７……逆止弁
、２８，３３……油路、３１……ベーンスロツト
、３２……背圧穴、３４……絞り。 Fig. 1 is a sectional view of a vane pump showing an embodiment of this invention, Fig. 2 is a front view of the vane pump shown in Fig. 1 with the rear cover removed, and Fig. 3 is a front view of the side plate of the same vane pump. It is. 1... Drive shaft, 2... Housing, 3... Rear cover, 4, 5... Bearing, 8... Cam ring, 9
...Rotor, 10...Vane, 11...Working room,
12... Side plate, 13... Hyperbaric chamber, 26
... Turbine (viscous type pump), 27 ... Check valve, 28, 33 ... Oil passage, 31 ... Vane slot, 32 ... Back pressure hole, 34 ... Throttle.

Claims

[Scope of utility model registration request]

a rotor that is coupled to a drive shaft and has a plurality of vanes attached so as to be retractable in substantially radial directions; a cam ring that accommodates the rotor; a side plate and a rear cover that close each side of the cam ring; and the cam ring and the side a housing that covers a plate and includes a high pressure chamber; a viscous pump that is provided at the rear end of the drive shaft; and a housing that extends in the axial direction through a base end of a vane slot in which the vane of the rotor is inserted. a check valve provided in the oil passage between the viscous pump and the back pressure hole opening on the side plate; and a check valve provided in the oil passage between the back pressure hole opening on the side plate side and the high pressure chamber of the housing. A vane pump equipped with a throttle installed in the oil passage.