JPH0241778U

JPH0241778U -

Info

Publication number: JPH0241778U
Application number: JP12121488U
Authority: JP
Priority date: 1988-09-16
Filing date: 1988-09-16
Publication date: 1990-03-22

Description

[Brief explanation of drawings]

第１図は本考案第１実施例の電磁比例式圧力制
御弁を示す断面図、第２図は本考案第２実施例の
電磁比例式圧力制御弁を示す断面図である。１……バルブボデイ、１ｃ……第１導通路、１
ｄ……第２導通路、２……液圧供給回路、３……
ドレーン回路、５ａ……第１フイードバツク機構
、５ｂ……第２フイードバツク機構、６ａ……第
１出力回路、６ｂ……第２出力回路、９ａ……第
１ソレノイド、９ｂ……第２ソレノイド、１０ａ
……第１バルブ穴、１０ｂ……第２バルブ穴、１
４ａ……第１液圧制御室、１４ｂ……第２液圧制
御室、４０ａ……第１スプール、４０ｂ……第２
スプール。 FIG. 1 is a cross-sectional view showing a proportional electromagnetic pressure control valve according to a first embodiment of the present invention, and FIG. 2 is a cross-sectional view showing a proportional electromagnetic pressure control valve according to a second embodiment of the present invention. 1... Valve body, 1c... First conduction path, 1
d...Second conduction path, 2...Liquid pressure supply circuit, 3...
Drain circuit, 5a...first feedback mechanism, 5b...second feedback mechanism, 6a...first output circuit, 6b...second output circuit, 9a...first solenoid, 9b...second solenoid, 10a
...First valve hole, 10b...Second valve hole, 1
4a...first hydraulic pressure control chamber, 14b...second hydraulic pressure control chamber, 40a...first spool, 40b...second
spool.

Claims

[Claims for Utility Model Registration] A first valve hole and a second valve hole formed independently in a valve body, a first spool and a second spool slidably provided in both valve holes, respectively; formed between the first spool and the valve body,
A first valve connected to the hydraulic pressure supply circuit and the first output circuit, and connected to the drain circuit via a first restrictor formed between the first spool and the valve body.
a hydraulic control chamber formed between the second spool and the valve body, communicated with the hydraulic pressure supply circuit and the second output circuit, and connected to a drain circuit via a second throttle formed between the second spool and the valve body; a second hydraulic pressure control chamber communicating with the first spool; a first solenoid that slides the first spool in a direction so as to sandwich the first throttle; and a first solenoid that slides the second spool in a direction so as to sandwich the second throttle. a second solenoid for guiding the hydraulic pressure in the first hydraulic pressure control chamber toward the second valve hole to slide the second spool in the direction to open the second throttle; a first conduction path that guides the hydraulic pressure in the hydraulic pressure control chamber to the second valve hole side to slide the second spool in the direction to open the second throttle, and both valve holes are arranged on the same axis. An electromagnetic proportional pressure control valve characterized by being arranged so that they do not overlap.