JPH0478375U

JPH0478375U -

Info

Publication number: JPH0478375U
Application number: JP12160190U
Authority: JP
Priority date: 1990-11-20
Filing date: 1990-11-20
Publication date: 1992-07-08

Description

[Brief explanation of the drawing]

第１図は、この考案の一実施例を示す電磁弁の
弁通路ユニツトの断面図である。２……弁通路ユニツト、９……ケーシング、１
０……弁スプール、１３ａ，１３ｂ……入排溝、
１４……ランド部（制御凸部）、１６……復帰ば
ね、１７ａ，１７ｂ……入排孔、１８……内側環
状溝（制御凹部）、１９……制御室、２０ａ，２
０ｂ……弁座、２１……制御孔。 FIG. 1 is a sectional view of a valve passage unit of a solenoid valve showing an embodiment of this invention. 2...Valve passage unit, 9...Casing, 1
0... Valve spool, 13a, 13b... Inlet/outlet groove,
14... Land portion (control protrusion), 16... Return spring, 17a, 17b... Inlet/exhaust hole, 18... Inner annular groove (control recess), 19... Control chamber, 20a, 2
0b... Valve seat, 21... Control hole.

Claims

[Scope of utility model registration request]

a casing, fitted within the casing;
When the solenoid of the solenoid valve is energized, the valve spool is moved in one direction from the rest position to the operating position against the biasing force of the return spring, and the valve spool is provided in the casing spaced apart in the axial direction of the valve spool. A pair of inlet/outlet holes are formed in the outer circumferential surface of the valve spool, and one end is open to the inner circumferential surface of the casing, and the other end is connectable to the pressure source side or the low pressure side. An annular control device with a communicating annular inlet/outlet groove and an annular control provided on one of the inner circumferential surface of the casing and the outer circumferential surface of the valve spool, making the inlet/outlet grooves communicate with each other, and having both ends formed as a pair of valve seats. a recess, and a valve body provided on the other of the inner circumferential surface of the casing and the outer circumferential surface of the valve spool, protruding toward the control recess and positioned with play in the axial direction of the valve spool, and cooperating with the valve seat. a control convex part, a control chamber formed between the control convex part and the control concave part, and an output provided in the casing, with one end opening into the control room and the other end connectable to the pressure receiving equipment side. when the valve spool is in the rest position, the control protrusion is seated on one valve seat of the control recess, whereas when the valve spool is moved from the rest position to the actuated position A valve passage unit for an electromagnetic valve, wherein the control convex portion is spaced from one valve seat of the control concave portion and is seated on the other valve seat.