JPS60149577U

JPS60149577U - check valve

Info

Publication number: JPS60149577U
Application number: JP3694584U
Authority: JP
Inventors: 玉田　稔郎; 服部　啓
Original assignee: 株式会社　テクノ−ル
Priority date: 1984-03-14
Filing date: 1984-03-14
Publication date: 1985-10-04

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図は本考案の一実施例そあるチェックバルブの正面
断面図であり、第２図はそのチェックバルブを用いた液
圧回路の一例を示す回路図である。第３図は本考案の他
の実施例であるチェックバルブの正面断面図である。１０：ハウジング、２８：弁子（第一）、３０：弁子（
第二）、３１：第一室、３２：第二室、３３：受圧面（
第一）、３４：連通路、３５：肩面、３６：コイルスプ
リング（第一ばね部材）、４０．６０：フランジ、４２
，６２：段部肩面、４４：受圧面（第二）、４８：コイ
ルスプリング（第二ばね部材）。FIG. 1 is a front sectional view of a check valve according to an embodiment of the present invention, and FIG. 2 is a circuit diagram showing an example of a hydraulic circuit using the check valve. FIG. 3 is a front sectional view of a check valve according to another embodiment of the present invention. 10: Housing, 28: Bento (first), 30: Bento (
2nd), 31: First chamber, 32: Second chamber, 33: Pressure receiving surface (
1st), 34: Communication path, 35: Shoulder surface, 36: Coil spring (first spring member), 40.60: Flange, 42
, 62: Step shoulder surface, 44: Pressure receiving surface (second), 48: Coil spring (second spring member).

Claims

[Claims for Utility Model Registration] A housing having a valve chamber therein and connected to an external liquid passage, and a housing movably provided within the valve chamber to divide the valve chamber into a first chamber and a second chamber. a first valve which is divided into two parts and has a first pressure-receiving surface that receives the liquid pressure of the second chamber, and a communication passage that opens in the center of the first pressure-receiving surface and communicates the second chamber with the second chamber; A second pressure receiving surface that is movably provided in the first chamber facing the first valve, closes the communication passage by abutting against the first valve, and is opposite to the first pressure receiving surface. a second valve element whose surface receives the hydraulic pressure of the communication passage; a first spring member and a second spring member that urge the first valve element and the second valve element to abut each other, respectively; The urging force of the spring member that urges the first and second valve elements by the hydraulic pressure of the hydraulic fluid flowing in the forward direction from the first chamber toward the second chamber and in the opposite direction. When the valve is pushed back against the pressure, the valve engages the other valve at a certain position and prevents the other valve from moving at least a certain amount along with the pushed back valve, thereby separating the two valves. and an engaging means for opening the communication passage.