JPS61178229U - - Google Patents

Description

[Brief explanation of drawings]

FIG. 1 is a partial sectional view of a limit switch according to the present invention, FIG. 2 is an exploded perspective view of the operating plunger etc. in FIG. 1, and FIG. 3 is a partial sectional view of a conventional limit switch. 1... Limit switch, 2... First housing, 3... Second housing, 17... Insertion hole, 5
0...Switch pressing plunger, 53...Operation plunger, 57...Diaphragm.

Claims (1)

[Claims for Utility Model Registration] The external actuator is exposed and sealed leaving an insertion hole for the operating plunger, and there is a power transmission mechanism inside that converts the force acting on the external actuator into the protruding and retracting motion of the operating plunger. Both plungers are inserted through the built-in first housing and the second housing, which is sealed leaving an insertion hole for the switch pressing plunger and has a built-in push button switch mechanism that is pressed by the switch pressing plunger. In a limit switch in which both plungers are joined and fixed by matching holes, and both plungers are connected with a switch pressing force buffer spring interposed; The buffer spring is interposed between the bottom of the cylinder and the tip of the rod, and the gap between the cylinder and the inner circumferential wall of the insertion hole surrounding the cylinder is set at the inner circumferential edge. is fixed to the outer circumferential surface of the cylindrical body, and the outer circumferential edge is partitioned into a first housing side and a second housing side by an elastic diaphragm fixed to the inner circumferential wall of the insertion hole. 1. A limit switch, characterized in that a cylindrical body of the switch pressing plunger is slidably disposed on a peripheral surface of the switch.