JPH0246178U - - Google Patents

Description

[Brief explanation of drawings]

The drawings show an embodiment of a fluid control solenoid valve having an operation detection mechanism according to the present invention, and FIG. 1 is a vertical cross-sectional view showing the overall structure of a proportional fluid control solenoid valve according to one embodiment, and FIG. 2 shows its main components. FIG. 4 is an enlarged cross-sectional view of the section and a schematic diagram of the detection circuit. 11, 12...Fluid passage, 13...Valve hole, 16
... Shaft, 30 ... Movable core, 31 ... Fixed core, 32 ... Inner hole, 36 ... Electromagnetic solenoid part, 41 ... Yoke part, 58 ... Detection contact.

Claims (1)

[Claims for Utility Model Registration] A fixed core having an inner hole penetrating in the axial direction at the center and an electromagnetic solenoid section attached to the outer periphery; an electromagnetic actuating part including a shaft inserted movably in the direction; and a movable core fixed to the shaft and disposed with a predetermined gap from the fixed core,
A valve body is installed at the front end of the shaft, which is interposed in the middle of the fluid passage and which disconnects the fluid passage by opening and closing the valve hole, and the shaft is returned so that the valve body normally closes the valve hole. energized by a force means;
In the fluid control solenoid valve, the opening degree of the valve body is controlled by the amount of movement of a movable core that is magnetically attracted to the fixed core side according to the current value applied to the electromagnetic solenoid section, and the rear part of the shaft includes: A fluid control solenoid valve characterized in that a detection contact is installed on an extension line of the shaft with which the rear end of the shaft comes into contact when the shaft exceeds a predetermined displacement amount.