A reverse pull switch

Abstract

The invention discloses a reverse pulling type switch. The reverse pulling type switch comprises a base, an outer shell, a nut and a gasket, wherein the base is connected with the outer shell through threads, the nut and the gasket are respectively installed on the outer shell in a sleeved mode through threads, an operation mechanism, a sealing mechanism and a switching circuit part are arranged inside the base and the outer shell, the operation mechanism comprises an insulating sleeve, an insulator A, an insulator B, a clamping ring and a compression spring, the insulating sleeve, the insulator A, the insulator B and the clamping ring are sequentially installed at the lower end of a handle in a sleeved mode, the compression spring is installed at the upper end of the handle in a sleeved mode, the sealing mechanism is composed of a waterproof ring, a pulling handle and an O-shaped sealing gasket, the waterproof ring is installed inside an annular groove in the pulling handle, the O-shaped sealing gasket is installed on the outer shell, the switching circuit part is composed of a contact chip assembly and a contact circular ring, the contact chip assembly is installed inside the base, and the contact circular ring is installed at the lower end of the handle in a sleeved mode and located between the insulator A and the insulator B. The reverse pulling type switch has the advantages of being high in sealing level, wide in working temperature range, reliable in contact and the like, thereby being widely used for instruments and equipment in a deep water environment.

Description

technical field [0001] The invention belongs to the technical field of electrical devices, and relates to a switch, in particular to a reverse pull switch. Background technique [0002] Button opening refers to the switch that uses the button to push the transmission mechanism to make the moving contact and the static contact press on or off and realize the circuit switching. The push button switch is a kind of master electrical appliance with simple structure and wide application. In electrical automatic control circuits, it is used to manually send control signals to control contactors, relays, electromagnetic starters, etc. The traditional button switch mainly includes an upper case and a lower case, and the upper case and the lower case are inserted into each other, wherein a button is installed on the upper end of the upper case, the button is equipped with a return spring, and a metal conductive switch is arranged at the lower end of the button. There are metal conne...

AI Technical Summary

Problems solved by technology

However, this structure cannot form an internal and external seal, and the product is prone to unreliable contact during use, and cannot be used in deep water environments

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