JPH0241780U

JPH0241780U -

Info

Publication number: JPH0241780U
Application number: JP12042788U
Authority: JP
Priority date: 1988-09-16
Filing date: 1988-09-16
Publication date: 1990-03-22

Description

[Brief explanation of drawings]

第１図は本考案の圧力切換電磁弁の縦断面図で
あつて流体圧力装置に低流体圧力源が導通した状
態を示す図、第２図及び第３図はそれぞれ第１図
の―断面矢視図、及び―断面矢視図、第
４図は本考案の圧力切換電磁弁が流体圧力装置に
高流体圧力源を導通させている状態を示す図、第
５図及び第６図はスプール弁が使用されている従
来の圧力切換電磁弁の構成を示す図である。符号の説明：１０１……筐体、１０２……弁室
、１０３……高流体圧力源に通ずる流体通路、１
０４……低流体圧力源に通ずる流体通路、１０５
……流体圧力装置に通ずる流体通路、１０６……
スプリング、１０７……ピストン、１０８，１０
９……弁室１０２の両端面に接する空間、１１０
……空間１０８，１０９を連通する流体通路、１
１１……高圧側球状弁体、１１２……低圧側球状
弁体、１１３……電磁アクチユエータ、１１４…
…作動桿。 FIG. 1 is a longitudinal sectional view of the pressure switching solenoid valve of the present invention, showing a state in which a low fluid pressure source is connected to the fluid pressure device, and FIGS. 4 is a view showing the pressure switching solenoid valve of the present invention conducting a high fluid pressure source to the fluid pressure device, and FIGS. 5 and 6 are views of the spool valve. 1 is a diagram showing the configuration of a conventional pressure switching solenoid valve in which a pressure switching solenoid valve is used. Explanation of symbols: 101... Housing, 102... Valve chamber, 103... Fluid passage leading to high fluid pressure source, 1
04...Fluid passage leading to a low fluid pressure source, 105
. . . Fluid passage leading to the fluid pressure device, 106 . . .
Spring, 107... Piston, 108, 10
9... Space in contact with both end surfaces of the valve chamber 102, 110
...Fluid passage that communicates the spaces 108 and 109, 1
11... High pressure side spherical valve body, 112... Low pressure side spherical valve body, 113... Electromagnetic actuator, 114...
...Operating rod.

Claims

[Scope of utility model registration request]

In a pressure switching solenoid valve that switches and connects a fluid pressure device to two high and low fluid pressure sources, a housing 101 of the solenoid valve includes a fluid passage 1 leading to the high fluid pressure source.
03, a fluid passage 104 communicating with a low fluid pressure source, and a fluid passage 105 communicating with a fluid pressure device are formed.
02 has a fluid passage 103 communicating with the high fluid pressure source and a fluid passage 104 communicating with the low fluid pressure source opening in the center of both end faces, and a slidable piston 107 is disposed inside. The spring 106 is directed toward the end face of the valve chamber 102 where the fluid passage 104 leading to the low fluid pressure source opens.
The piston 107 has two spaces 108 and 1 in contact with both end surfaces of the valve chamber 102.
09 is formed, and a fluid passage 105 communicating with the fluid pressure device opens at a position where fluid flow is not obstructed by the piston 107 of the valve chamber 102, and is connected to the high fluid pressure source. A high-pressure side spherical valve body 111 and a low-pressure side spherical valve body 112 are provided between each end face of the piston 107 and the fluid passage 103 opening communicating with the low fluid pressure source and the fluid passage 104 opening communicating with the low fluid pressure source, respectively. a fluid passageway 10 which is guided and arranged substantially concentrically with a degree of freedom to select the seating position in the opening and which leads to the source of low fluid pressure in the valve chamber 102;
4. An electromagnetic actuator 113 is disposed outside the opening, and an operating rod 114 of the electromagnetic actuator 113 connects to the fluid passage 10 communicating with the low fluid pressure source.
A pressure switching electromagnetic device is inserted into the opening of 4 with a fluid passage left, and is switched between a high fluid pressure source and a low fluid pressure source to the fluid pressure device by moving the operating rod 114 of the electromagnetic actuator 113 forward and backward. valve.