JPS6273174U

JPS6273174U -

Info

Publication number: JPS6273174U
Application number: JP16619585U
Authority: JP
Priority date: 1985-10-28
Filing date: 1985-10-28
Publication date: 1987-05-11
Also published as: JPH0419267Y2

Description

[Brief explanation of the drawing]

第１図はこの考案の一実施例のチエツク弁付圧
力制御弁の断面図、第２図は第１図の軸心孔先端
部の拡大説明図、第３図は従来のチエツク弁付圧
力制御弁の断面図である。２１…本体、２２…スプール、２３…弁室、２
５…ポペツト、２５ａ，３２ｂ…円錐面、３２…
軸心孔、３２ａ…円筒面、３７，４８…バネ室、
３８，４９…バネ、４３…絞り、４５…通路。 Fig. 1 is a sectional view of a pressure control valve with a check valve according to an embodiment of this invention, Fig. 2 is an enlarged explanatory view of the tip of the shaft center hole in Fig. 1, and Fig. 3 is a conventional pressure control valve with a check valve. FIG. 3 is a cross-sectional view of the valve. 21...Main body, 22...Spool, 23...Valve chamber, 2
5... Poppet, 25a, 32b... Conical surface, 32...
Axial hole, 32a...Cylindrical surface, 37, 48...Spring chamber,
38, 49...Spring, 43...Aperture, 45...Passage.

Claims

[Claims for Utility Model Registration] A poppet 25 is coaxially opposed to a spool 22 which is slidably fitted into a valve chamber 23 formed in a main body 21 and has an axial hole 32 opened at the front end surface,
A spring 3 is installed in a spring chamber 37 on the rear end side of the spool 22.
8 is compressed, a spring 49 is compressed in the spring chamber 48 on the rear end side of the poppet 25, and the inlet 27 is compressed.
the spring 3 on the rear end side of the spool 22.
8 and the spring 49 on the rear end side of the poppet 25 press the annular inner edge of the front end of the spool 22 and the front part of the poppet 25 in the primary chamber 26 communicating with the inlet 27, and act on the front surface of the spool 22. The spool 22 is moved forward and backward by the fluid pressure applied to control the fluid pressure at the inlet 27, while the fluid pressure acting on the front surface of the poppet 25 facing the axial hole 32 leading to the outlet 29 , in a pressure control valve with a check valve that allows the flow from the outlet 29 to the inlet 27 to be a free flow by retracting the poppet 25. In addition to communicating through
the outlet 29 is in communication via the passage 45;
The inner peripheral surface of the front end of the shaft center hole 32 is a cylindrical surface 32a.
A pressure control valve with a check valve, characterized in that the inner circumferential surface at the back connected to the cylindrical surface 32a is formed as a conical surface 32b inclined in the same direction as the conical surface 25a of the poppet 25.