JPH0463880U

JPH0463880U -

Info

Publication number: JPH0463880U
Application number: JP10831890U
Authority: JP
Priority date: 1990-10-15
Filing date: 1990-10-15
Publication date: 1992-05-29

Description

[Brief explanation of the drawing]

図面は本考案の一実施例を示すものであり、第
１図はソレノイド弁の縦断面図、第２図は第１図
の部拡大図、第３図ａは固定コアおよび可動コ
ア間の間隔に対する吸引力の関係を示す図、第３
図ｂは固定コアおよび可動コア間の間隙に対する
ばね力の関係を示す図である。１……固定コア、２……ヨーク、３……弁室、
４……可動コア、５……弁座部材、６……弁体、
７ａ……第１戻しばね、７ｂ……第２戻しばね、
１９……規制部材、Ｓ……ばね手段。 The drawings show one embodiment of the present invention, in which Fig. 1 is a longitudinal sectional view of a solenoid valve, Fig. 2 is an enlarged view of a portion of Fig. 1, and Fig. 3a shows the interval between the fixed core and the movable core. Figure 3 showing the relationship of attraction force to
FIG. b is a diagram showing the relationship of spring force to the gap between the fixed core and the movable core. 1... fixed core, 2... yoke, 3... valve chamber,
4...Movable core, 5...Valve seat member, 6...Valve body,
7a...first return spring, 7b...second return spring,
19...Restriction member, S...Spring means.

Claims

[Claims for Utility Model Registration] A valve chamber 3 is formed between the fixed core 1 and the yoke 2, and a valve seat member 5 is provided in one of the fixed core 1 and the yoke 2 facing the valve chamber 3. A movable core 4 is housed in the valve chamber 3 and is capable of moving toward and away from the fixed core 1 and is biased by a spring in a direction away from the fixed core 1, and is seated on the valve seat member 5. In the solenoid valve in which the valve body 6 is fixed to the movable core 4, the movable core 4 is biased between the movable core 4 and the fixed core 1 in a direction away from the fixed core 1, and the movable core 4 is urged toward the fixed core 1. 1. A solenoid valve characterized in that a spring means S is provided for changing a spring constant from a small spring constant at the beginning of the movement to a large spring constant at the end of the movement. The spring means S includes a first return spring 7a with a small spring constant and a second return spring 7 with a large spring constant.
b is regulated in its maximum separation distance from one of the movable core 4 and the fixed core 1 in order to regulate the minimum value of the spring load by the second return spring 7b, and the first
The maximum value of the spring load by the return spring 7a is determined by the second
It is interposed in series between the movable core 4 and the fixed core 1 with a regulating member 19 that can come into contact with the other of the movable core 4 and the fixed core 1 in order to make the spring load of the return spring smaller than the minimum value. The solenoid valve according to claim 1, characterized in that: