JPS6378776U

JPS6378776U -

Info

Publication number: JPS6378776U
Application number: JP17361286U
Authority: JP
Priority date: 1986-11-11
Filing date: 1986-11-11
Publication date: 1988-05-25

Description

[Brief explanation of the drawing]

第１図は本考案の切換弁の全体断面で、第２図
の―線矢視図、第２図は第１図の要部の断面
図、第３図はホール素子上を移動するセンサヨー
クの概略図、第４図は処理回路に採用される構成
ブロツク図、第５図ａはホール素子からの出力信
号とスプールの変位量の関係を示すグラフ、第５
図ｂは減算増幅器からの出力信号とスプールの変
位量の関係を示すグラフ、第５図ｃは比較器から
の出力信号とスプールの位置関係を示すグラフで
ある。２……スプール、１２……センサヨーク、２０
Ａ，２０Ｂ……ホール素子、２２Ａ，２２Ｂ……
磁石、ｌ……距離間隔。 Figure 1 is an overall cross-sectional view of the switching valve of the present invention, a view taken along the - line in Figure 2, Figure 2 is a cross-sectional view of the main part of Figure 1, and Figure 3 is a sensor yoke that moves on the Hall element. 4 is a block diagram of the configuration adopted in the processing circuit, FIG. 5 a is a graph showing the relationship between the output signal from the Hall element and the amount of displacement of the spool,
FIG. 5B is a graph showing the relationship between the output signal from the subtraction amplifier and the amount of displacement of the spool, and FIG. 5C is a graph showing the relationship between the output signal from the comparator and the position of the spool. 2...Spool, 12...Sensor yoke, 20
A, 20B...Hall element, 22A, 22B...
Magnet, l... Distance interval.

Claims

[Claims for Utility Model Registration] (1) In a switching valve in which the displacement of the spool is detected by a Hall element, two Hall elements are arranged at a distance interval corresponding to the distance between both stroke ends of the spool, and the sensor A switching valve characterized in that a yoke is integrated with a spool so as to move between the hall elements. (2) The switching valve according to claim 1, wherein the sensor yoke is a magnetic material that enhances the magnetic field between two opposing magnets. (3) The switching valve according to claim 1, wherein the sensor yoke is a permanent magnet that applies a magnetic field to a Hall element.