JPH01108375U

JPH01108375U -

Info

Publication number: JPH01108375U
Application number: JP252688U
Authority: JP
Priority date: 1988-01-14
Filing date: 1988-01-14
Publication date: 1989-07-21

Description

[Brief explanation of the drawing]

第１図は本考案に係わる可変式オイルポンプの
一実施例を示す縦断面図、第２図は従来の可変式
オイルポンプの縦断面図である。１０……第一ポンプボデー、１２……第二ポン
プボデー、１４……クランクシヤフト、１８……
吸入口、２０……吐出口、２２……インナーロー
タ、２４……アウターロータ、２６……ピストン
、２８……スプリング、３２……スプール弁、３
４……スプリング、３６……第二導入通路、３８
……第二圧力通路、４０……第一導入通路、４２
……第一圧力通路。 FIG. 1 is a longitudinal sectional view showing an embodiment of a variable oil pump according to the present invention, and FIG. 2 is a longitudinal sectional view of a conventional variable oil pump. 10...First pump body, 12...Second pump body, 14...Crankshaft, 18...
Suction port, 20...Discharge port, 22...Inner rotor, 24...Outer rotor, 26...Piston, 28...Spring, 32...Spool valve, 3
4...Spring, 36...Second introduction passage, 38
...Second pressure passage, 40...First introduction passage, 42
...First pressure passage.

Claims

[Scope of utility model registration request]

A pump body forming a fluid suction port and a fluid discharge port, a rotating means housed within the pump body for moving fluid from the suction port to the discharge port, a driving means for rotating the rotating means, and a rotating means for rotating the rotating means. In a variable oil pump having a piston that is joined and separated, and a biasing means that biases the piston to contact the rotating means, the discharge port is connected to a surface of the piston on the opposite side of the rotating means joint surface. a valve for opening and closing the introduction passage; a spring for biasing the valve in the opening direction; and a pressure passage communicating between a portion of the valve that resists the spring and the discharge port. A variable oil pump featuring: