JPH0317385U

JPH0317385U -

Info

Publication number: JPH0317385U
Application number: JP7688989U
Authority: JP
Priority date: 1989-06-29
Filing date: 1989-06-29
Publication date: 1991-02-20

Description

[Brief explanation of the drawing]

第１図ａおよびｂは本考案の実施例である自己
保持型電磁弁を示す断面図、第２図ａおよびｂは
本考案の他の実施例である自己保持型電磁弁を示
す断面図、第３図ａおよびｂは従来の自己保持型
電磁弁を示す断面図、第４図ａおよびｂは他の従
来の自己保持型電磁弁を示す断面図、第５図ａお
よびｂはさらに他の従来の自己保持型電磁弁を示
す断面図である。１……プランジヤ、２……弁座、３……電磁コ
イル、４……コイルボビン、５……スリーブ、６
……スプリング、７……Ｏ−リング、８，９，１
０……ヨーク、１１……永久磁石、１２……ヨー
ク。 FIGS. 1a and b are cross-sectional views showing a self-holding solenoid valve as an embodiment of the present invention; FIGS. 2 a and b are cross-sectional views showing a self-holding solenoid valve as another embodiment of the present invention; Figures 3a and b are sectional views showing a conventional self-holding type solenoid valve, Figures 4a and b are sectional views showing another conventional self-holding type solenoid valve, and Figures 5a and b are further sectional views showing another conventional self-holding type solenoid valve. FIG. 2 is a sectional view showing a conventional self-holding solenoid valve. 1... Plunger, 2... Valve seat, 3... Electromagnetic coil, 4... Coil bobbin, 5... Sleeve, 6
...Spring, 7...O-ring, 8,9,1
0...Yoke, 11...Permanent magnet, 12...Yoke.

Claims

[Scope of utility model registration request]

The magnetic flux generated by the magnetomotive force of the electromagnetic coil passes through the attraction surface of the plunger and yoke, which are urged to separate from the attraction surface of the yoke, and the magnetic flux generated by the magnetomotive force of the permanent magnet passes through the attraction surface of the plunger and yoke. In a self-holding solenoid valve configured to pass through a main passage passing through a magnetic shunt consisting of a plunger and a yoke, the permanent magnet is arranged coaxially with the electromagnetic coil, and the direction of the magnetomotive force of the permanent magnet and the electromagnetic force are A self-holding solenoid valve characterized in that the directions of magnetomotive force of the coils are made to coincide with each other, and a restriction is provided in the magnetic shunt.