JPS5940587U

JPS5940587U - Check valve for reversible hydraulic pump

Info

Publication number: JPS5940587U
Application number: JP13477882U
Authority: JP
Inventors: 正治井川; 都築　康; 教正小椋
Original assignee: トヨタ自動車株式会社; 豊興工業株式会社
Priority date: 1982-09-03
Filing date: 1982-09-03
Publication date: 1984-03-15
Also published as: JPH0141915Y2

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図は可逆式液圧ポンプ用逆止め弁の従来例を示す断
面図（一部回路図を含む）、第２図は本考案の一実施例
を示す断面図（一部回路図を含む）である。２．３０・・・弁本体、５，３１・・・液槽（タンク）
、３．３３・・・中間室、６，３４・・・可逆式液圧ポ
ンプ、１１、　１２．　３９．　４０・・・弁室、４３
．４４・・・小径部、４５．４６・・・ポペット弁弁体
、６１．６２・・・ばね、６１．　６２．　８０．　８
４・・・ばね受は部材、６３、　６４．　８０．　８４
・・・操作孔、６５．６６・・・規制部材。Fig. 1 is a sectional view (including a partial circuit diagram) of a conventional check valve for a reversible hydraulic pump, and Fig. 2 is a sectional view (including a partial circuit diagram) of an embodiment of the present invention. ). 2.30...Valve body, 5,31...Liquid tank (tank)
, 3.33... intermediate chamber, 6, 34... reversible hydraulic pump, 11, 12. 39. 40...valve chamber, 43
．． 44...Small diameter portion, 45.46...Poppet valve body, 61.62...Spring, 61. 62. 80. 8
4... Spring receiver is a member, 63, 64. 80. 84
...Operation hole, 65.66...Regulation member.

Claims

[Scope of utility model registration request]

The reversible hydraulic pump has two valve chambers that communicate with each of the two intake and discharge ports, and includes an intermediate chamber that communicates between the two valve chambers and communicates with the liquid tank. A valve body forming a small diameter portion and controlling opening and closing between the intermediate chamber and each valve chamber is disposed, and a spring biasing the valve body in a closing direction is provided at the rear end of the valve body to which the pressure inside each valve chamber is guided. The check valve is configured such that the end surfaces of the small diameter portions of the valve bodies are in contact with each other and communicate between the intermediate chamber and each valve chamber, wherein the check valve is movable to the rear end of the spring and seals the rear end of the valve chamber. The spring receiver is provided with a member, the spring receiver regulates the backward movement of the member, and the spring receiver is provided with a regulating member having an operation hole that can be operated to push the member in the direction of closing the valve body, and The reversible hydraulic pump is characterized in that the spring receiver is configured to forcibly close one valve body and forcibly open the other valve body via the valve body by pressing and moving a member forward. Check valve for.