JPH0259374U

JPH0259374U -

Info

Publication number: JPH0259374U
Application number: JP13850188U
Authority: JP
Priority date: 1988-10-24
Filing date: 1988-10-24
Publication date: 1990-04-27

Description

[Brief explanation of drawings]

図面は本考案の一実施例を示し、第１図は自動
車の負圧式ブレーキサーボモータへの負圧導入手
段を示す縦断正面図、第２図は逆止弁の縦断正面
図、第３図は弁筒の分解斜視図である。１…逆止弁、６…可撓性ホース、７…弁筒、８
…入口孔、９…弁座、１０，１４…端壁、１１…
弁体案内筒、１２…出口孔、１３…弁ばね支承面
、１５…弁体、１６…弁ばね、１８…抜止め凹部
、１９…環状シール部、２２…抜止め凸部。 The drawings show one embodiment of the present invention; FIG. 1 is a longitudinal sectional front view showing means for introducing negative pressure into a negative pressure type brake servo motor of an automobile, FIG. 2 is a longitudinal sectional front view of a check valve, and FIG. It is an exploded perspective view of a valve cylinder. 1...Check valve, 6...Flexible hose, 7...Valve barrel, 8
...Inlet hole, 9...Valve seat, 10, 14... End wall, 11...
Valve body guide cylinder, 12... Outlet hole, 13... Valve spring support surface, 15... Valve body, 16... Valve spring, 18... Recessed part for preventing removal, 19... Annular seal part, 22... Preventing protrusion.

Claims

[Scope of utility model registration request]

A cylindrical valve barrel is provided with an end wall having an inlet hole and a valve seat communicating with the inlet hole, a valve body guide tube connected to the end wall, an outlet hole and a valve spring bearing surface surrounding the opening of the outlet hole. an end wall that is held and connected to the valve body guide cylinder; a valve body that cooperates with the valve seat; and a valve body that is fixed in the valve body so as to urge the valve body in a seating direction with the valve seat. A check valve housing a valve spring whose end is supported by the valve spring support surface, the check valve being pushed into a flexible hose with the inner circumferential surface of the hose in close contact with the outer circumferential surface of the valve barrel. In the one used, the valve cylinder is made of synthetic resin, the valve body guide cylinder is provided integrally with one of the end walls, and one of the inner circumferential surface of the valve body guide cylinder and the outer circumferential surface of the other end wall. An annular retaining convex portion formed on the other end is fitted into an annular retaining concave portion formed on the other end by utilizing the elasticity of the valve body guide tube, and the inner circumferential surface of the hose is fitted onto the end wall having the valve seat. A check valve characterized by having an annular seal part that bites into the valve.