JP2015121121A5

JP2015121121A5 -

Info

Publication number: JP2015121121A5
Application number: JP2013264365A
Authority: JP
Filing date: 2013-12-20
Publication date: 2016-03-31
Anticipated expiration: 2033-12-20

Description

即ち、請求項１においては、内部に楕円形のポンプ室を有するハウジングと、前記ポンプ室内に配置されるとともにロータによって回転されて前記ポンプ室を複数の作動空間に区画するベーンと、前記ポンプ室内に潤滑油を供給する給油通路と、を有するバキュームポンプにおいて、前記ハウジングの外周に、外周縁を円形状に形成したフランジ部を設け、前記ハウジングを閉鎖する円形状の底面と、底面から立設した側面とを有するハウジングカバーを設け、前記フランジ部とハウジングカバーとの間に環状のシール部材を配置し、前記ハウジングカバーの内周面と前記ハウジングのフランジ部の外周縁とは、前記ハウジングカバーの底面と垂直となる接合面を形成し、前記ハウジングカバーの内周面と前記ハウジングのフランジ部とを環状のシール部材を介して固定したものである。
That is, in claim 1, a housing having an elliptical pump chamber therein, a vane which is disposed in the pump chamber and is rotated by a rotor to partition the pump chamber into a plurality of working spaces, and the pump chamber In the vacuum pump having an oil supply passage for supplying lubricating oil to the outer periphery of the housing, a flange portion having a circular outer peripheral edge is provided on the outer periphery of the housing, and a circular bottom surface for closing the housing, and a vertical installation from the bottom surface. A housing cover having a side surface, an annular seal member is disposed between the flange portion and the housing cover, and the inner peripheral surface of the housing cover and the outer peripheral edge of the flange portion of the housing of forming a joint surface formed between the bottom surface and vertical, ring and a flange portion of the inner circumferential surface of the housing cover housing Those fixed through a seal member.

Claims

A housing having an elliptical pump chamber therein, a vane disposed in the pump chamber and rotated by a rotor to partition the pump chamber into a plurality of working spaces, and an oil supply passage for supplying lubricating oil into the pump chamber In a vacuum pump having
On the outer periphery of the housing, a flange portion having a circular outer periphery is provided.
A housing cover having a circular bottom for closing the housing and a side surface standing from the bottom;
An annular seal member is disposed between the flange portion and the housing cover,
The inner peripheral surface of the housing cover and the outer peripheral edge of the flange portion of the housing form a joint surface perpendicular to the bottom surface of the housing cover,
The inner peripheral surface of the housing cover and the flange portion of the housing are fixed via an annular seal member.
Vacuum pump characterized by that.

A screw part is provided on the inner peripheral surface of the side surface of the housing cover, and a screw part corresponding to the screw part is provided on the outer peripheral edge of the flange part.
The vacuum pump according to claim 1.