JPS62185884U

JPS62185884U -

Info

Publication number: JPS62185884U
Application number: JP7493386U
Authority: JP
Priority date: 1986-05-19
Filing date: 1986-05-19
Publication date: 1987-11-26
Also published as: JPH0326314Y2

Description

[Brief explanation of the drawing]

第１図は本考案の一実施例である吐出弁装置の
正面断面図であり、第２図は上記吐出弁装置を備
えたバキユームポンプの正面断面図である。第３
図は上記吐出弁装置に用いられるウエーブスプリ
ングの斜視図であり、第４図は上記バキユームポ
ンプに使用されるアツパケーシングの底面図であ
る。１０：ケーシング、１２：ロワケーシング、１
４：アツパケーシング、２０，２２：合わせ面、
３２：ピストン、３４：ポンプ室、４０：通路、
４２：吐出用チエツクバルブ、４４：通路、５０
：ピストンプルロツド、７０：ロツカアーム、７
２：ピボツト軸、９０：カム、１００：弁座部材
、１０２：弁子、１０４：スプリング、１０６：
バルブケーシング、１０８：弁孔、１１０：シー
ル突起、１１２：弁座、１２０：座ぐり穴、１２
２：肩面、１２４：Ｏリング、１３０：ウエーブ
スプリング。 FIG. 1 is a front sectional view of a discharge valve device according to an embodiment of the present invention, and FIG. 2 is a front sectional view of a vacuum pump equipped with the above-mentioned discharge valve device. Third
The figure is a perspective view of a wave spring used in the discharge valve device, and FIG. 4 is a bottom view of the Atsupa casing used in the vacuum pump. 10: Casing, 12: Lower casing, 1
4: Atsupa casing, 20, 22: mating surface,
32: Piston, 34: Pump chamber, 40: Passage,
42: Discharge check valve, 44: Passage, 50
: Piston pull rod, 70: Locker arm, 7
2: Pivot shaft, 90: Cam, 100: Valve seat member, 102: Valve element, 104: Spring, 106:
Valve casing, 108: Valve hole, 110: Seal projection, 112: Valve seat, 120: Counterbore hole, 12
2: Shoulder surface, 124: O-ring, 130: Wave spring.

Claims

[Claims for Utility Model Registration] (1) A checker comprising a valve seat member having an annular shape with a valve hole in the center, and a valve seat that seats on the valve seat member and closes the valve hole. A discharge valve device of a type in which a valve is attached to a casing forming a pump chamber of a vacuum pump, wherein a first casing member and a second casing member are fitted together at a flat mating surface to form the casing, A counterbore hole that is a certain dimension deeper than the thickness of the valve seat member is formed at the open end of the first passage that opens in the mating surface of the first casing member, and the check valve is inserted into the counterbore hole. an elastic member that is fitted in a state closer to the mating surface than the valve element and presses the valve seat member against the mating surface of the second casing member between the shoulder surface of the counterbore hole and the valve seat member; interposed therebetween, and a second passage is formed in the second casing member to communicate the pump chamber with the valve hole of the valve seat member in a state where the valve seat member is pressed against the mating surface. Vacuum pump discharge valve device. (2) A utility model in which the second passage is a groove formed in the mating surface of the second casing member, and the gap between the inner surface of the counterbore hole and the outer surface of the check valve is sealed by a sealing member. A discharge valve device according to registered claim 1.