JPH02150478U

JPH02150478U -

Info

Publication number: JPH02150478U
Application number: JP5761289U
Authority: JP
Priority date: 1989-05-19
Filing date: 1989-05-19
Publication date: 1990-12-26
Anticipated expiration: 2004-05-19
Also published as: JP2525388Y2

Description

[Brief explanation of drawings]

図面第１図はこの考案の１実施例を示す断面図
、第２，３図は従来の可変絞り電磁弁を示すもの
で、第２図は断面図、第３図はこの電磁弁をパワ
ーステアリング装置に利用した状態の回路図であ
る。１３……バルブ本体、１１，１２……流出入ポ
ート、１４……スプール孔、１６……プラグ（バ
ルブ本体）、１７……スプール、２０……スプリ
ング、２２……通油孔、ａ……可変絞り部、２７
……円筒突出部、２８……凹部、３０……静圧室
、Ｓ……ソレノイド。 Figure 1 is a sectional view showing one embodiment of this invention, Figures 2 and 3 are a conventional variable throttle solenoid valve, Figure 2 is a sectional view, and Figure 3 is a power steering configuration of this solenoid valve. FIG. 3 is a circuit diagram of the device in use. 13...Valve body, 11, 12...Inflow/outflow port, 14...Spool hole, 16...Plug (valve body), 17...Spool, 20...Spring, 22...Oil hole, a... Variable aperture section, 27
... Cylindrical protrusion, 28 ... Recess, 30 ... Static pressure chamber, S ... Solenoid.

Claims

[Scope of utility model registration request]

A spool hole is formed in the valve body, and a spool that moves in the axial direction by the operation of a solenoid is housed in the spool hole. While forming an oil hole along the
The opening degree of the variable throttle part is controlled according to the moving position of the spool, and when the variable throttle part opens, both the inflow and outflow ports are communicated through the oil passage hole formed in the spool. In the variable throttle solenoid valve configured such that the pressure fluid in the oil passage of the spool acts on both ends of the spool, a cylindrical protrusion is formed at the open end of the oil passage of the spool, and a cylindrical protrusion is opposed to the cylindrical protrusion. A recess is formed in the opposing surface of the valve body, one end of the spring interposed between the spool and the valve body is fitted to the outside of the cylindrical protrusion, and the other end is fitted to the inside of the recess; A variable throttle solenoid valve in which a static pressure chamber is defined by the cylindrical protrusion and the recess, and the static pressure chamber is communicated with a spool end.