Microswitch

Details Microswitch Microswitch

H - Electricity

01

H

306/328

H01H 21/42 (2006.01) H01H 5/04 (2006.01) H01H 13/36 (2006.01)

Patent

CA 1235726

Abstract of the Disclosure A microswitch comprises an insulating base, stationary contacts fastened on said insulating base, a four-link system of levers for selectively swit- ching, a movable contact, and a limit switch. Said system of levers includes an actuating link fastened on said insulating base, two middle links one of which is a contact link and the other one is an inter- mediate link, both said links are connected with one another, with the free end of one of the links being connected with the free end of the actuating link, and a support link having one end connected with the free end of one of the middle links and the other end secured on said insulating base. The microswitch also has a movable contact adapted to alternately interact with said stationary contacts and secured on the end of said contact link connected with said intermediate link, and a limit stop mounted on said insulating base so as to hold one of the middle links in its end positions in the direction of the displac- ement of the movable contact close to the place of connection of the middle link with the support link. The invention may be advantageously used as a limit switch in automatic control systems, protection and signalling systems of electric drives in hoisting, and conveying machines, machine tools and other production equipment.

406897

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