Plug-type button switch

Abstract

The invention provides a plug-type button switch which comprises a handle, a shell, a gasket, a nut, a base A, a pressure spring, a fixing plate, a push bar, a retainer ring and a mounting plate. The shell is fixedly mounted on the mounting plate through the gasket and the nut, the top end of the push bar is mounted in the base A, the pressure spring is arranged under the step surface of the top end of the push bar, the lower end of the pressure spring is fixedly mounted on the upper side of the fixing plate, and the fixing plate is fixed on a convex ring of the lower end surface of the base A. Switching on and off of a contact mechanism adopts a mode of touching of a contact point, so that the shortcoming that the on-off state is restored once external force is removed traditionally is overcome, abrasion among contact pieces is reduced, the contact point and a circular contact ring are made of silver oxide and indium tin oxide materials, electrical life of products under high current is prolonged, switching on-off locking of the switch can be realized, electrical load bearing capacity of the contact pieces is improved, usage period is prolonged, and accordingly, electrical life of the switch is prolonged.

Description

technical field [0001] The invention relates to the technical field of switch manufacturing, in particular to a plug-in push button switch. Background technique [0002] The push button switch is a switch that drives the internal contact conversion by the driving force on the same line as the push button stroke. The feature of the button switch is that it is installed in the machine and instrument in progress. Most of the time it is in the initial free state. It is only switched to the second state under the action of external force when required. Once the external force is removed, Due to the effect of the spring, the switch returns to the initial position, and its electrical load bearing capacity is small, the wear between the contacts is large, and the electrical life of the switch is short. Chinese patent ZL201220123401.2 discloses a plug-in sensor switch, the switch, the plug-in sensor switch is convenient for disassembly and line installation, realizes free plug-in, f...

AI Technical Summary

Problems solved by technology

The feature of the button switch is that it is installed in the machine and instrument in progress. Most of the time it is in the initial free state. It is only switched to the second state under the action of external force when required. Once the external force is removed, Due to the action of the spring, the switch returns to the initial position, its electrical load bearing capacity is small, the wear between the contacts is large, and the electrical life of the switch is short

Chinese patent ZL201220123401.2 discloses a plug-in sensor switch, the switch, the plug-in sensor switch is convenient for disassembly and line installation, realizes free plug-in, fast and effective connection of the circuit, and improves the efficiency of installation and use. Labor cost, and the installation can be done in one step without the need for other installation parts and installation tools such as screws and some related fasteners, but the plug-in sensor switch cannot be used under high current conditions

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