JPS6032579U

JPS6032579U - vane pump

Info

Publication number: JPS6032579U
Application number: JP12383083U
Authority: JP
Inventors: 進穂永; 安部　隆太郎; 克之竹内
Original assignee: 豊田工機株式会社
Priority date: 1983-08-11
Filing date: 1983-08-11
Publication date: 1985-03-05

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) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図はベーンポンプの断面図、第２図は従来における
ロータ軸端のスナップリング装着部の拡大断面図、第３
図は本考案のベーンポンプにおけるロータ軸端のスナッ
プリング装着部の断面図である。１・・・ポンプハウジング、３・・・カムリング、７・
・・ロータ、９・・・スプライン、１０・・・ロータ軸
、１１・・・スナップリング、１２・・・スナップリン
グ溝、１５・・・係合面、１６・・・円弧状溝。Figure 1 is a sectional view of the vane pump, Figure 2 is an enlarged sectional view of the conventional snap ring attachment part at the end of the rotor shaft, and Figure 3 is a sectional view of the vane pump.
The figure is a cross-sectional view of the snap ring mounting portion at the end of the rotor shaft in the vane pump of the present invention. 1...Pump housing, 3...Cam ring, 7.
... Rotor, 9... Spline, 10... Rotor shaft, 11... Snap ring, 12... Snap ring groove, 15... Engagement surface, 16... Arc-shaped groove.

Claims

[Scope of utility model registration request]

A cam ring housed in a pump housing, a rotor that radially holds a plurality of vanes that are in sliding contact with the cam surface of the cam ring, and a rotor that is rotatably supported by the Ponzino 1 housing and that is connected to the rotor by a spline in the direction of rotation. A rotor shaft that engages and is connected in the axial direction with a snap ring, a side plate that faces the cam ring and the side surface of the rotor and forms a pump chamber between the cam ring and the rotor, and an expansion stroke or a compression stroke that is applied to the side plate. In a vane pump having a suction port and a discharge port each communicating with a pump chamber, a groove wall of the snap ring groove formed on the outer periphery of the end of the rotor shaft on the side that engages with the snap ring has an arc shape that matches the shape of the snap ring. A vane pump characterized in that a groove is provided, and the arcuate groove is as close as possible to the peripheral edge of the groove wall.