JPH02118184U

JPH02118184U -

Info

Publication number: JPH02118184U
Application number: JP2816689U
Authority: JP
Priority date: 1989-03-13
Filing date: 1989-03-13
Publication date: 1990-09-21

Description

[Brief explanation of drawings]

図面は本考案の実施例を示すもので、第１図は
バキユームポンプの断面図、第２図は第１図の
−線断面図、第３図は第２図の要部拡大図であ
る。１０……リヤポンプハウジング、１１……フロ
ントポンプハウジング、１６……ロータ、１７…
…シヤフト、１８，１９……軸受、２５……ベー
ン、２６……内周面、２８……吸入口、２９……
排出口、３０……外周面、３１……油導入ポート
。 The drawings show an embodiment of the present invention; FIG. 1 is a cross-sectional view of a vacuum pump, FIG. 2 is a cross-sectional view taken along the - line in FIG. 1, and FIG. 3 is an enlarged view of the main parts of FIG. 2. . 10... Rear pump housing, 11... Front pump housing, 16... Rotor, 17...
... Shaft, 18, 19 ... Bearing, 25 ... Vane, 26 ... Inner peripheral surface, 28 ... Inlet, 29 ...
Discharge port, 30... outer peripheral surface, 31... oil introduction port.

Claims

[Scope of utility model registration request]

a pump housing having an inlet and an outlet;
a rotor eccentrically housed in the pump housing; a vane fitted into the rotor so as to be slidable in the radial direction; and a shaft fixed to the center of the rotor and rotatably supported by the pump housing. In the vacuum pump, the vacuum pump is configured to forcefully feed fluid from the suction port to the discharge port to form a vacuum on the suction port side, and the radial direction of the inner circumferential surface of the pump housing and the outer circumferential surface of the rotor are A vacuum pump characterized in that an oil introduction port is provided on an inner circumferential surface of the pump housing on the side opposite to the rotation of the rotor from a circumferential position where the distance is the smallest.