Pressing type travel switch resisting severe environment

Abstract

The invention discloses a pressing type travel switch resisting severe environment. The pressing type travel switch is composed of a shell, a drive body assembly, a base assembly and a pressing spring. The base assembly comprises a base body and at least one set of contact bars. The drive body assembly comprises a drive body, a button and at least one drum-like contact spring part. The number of the drum-like contact spring parts is the same as that of the sets of the contact bars. A locating boss on the base body and a locating blind hole in the drive body are located on the same axis. The upper end of the pressing spring is fixedly embedded into the locating blind hole. The lower end of the pressing spring is fixedly embedded outside the locating boss. The shell is a housing with a penetration hole formed in the center of the top. According to the travel switch, the drum-like bundling type contact springs with multiple elastic contacts are adopted, multi-point elastic surrounding uniform contact with the contact bars can be achieved, and the travel switch has the advantages of being high in impact resistance, high in vibration resistance, miniaturized, high in reliability, low in cost and the like.

Description

technical field [0001] The invention relates to the technical field of travel switches, in particular to a push-type travel switch resistant to harsh environments. Background technique [0002] The travel switch is also called a position switch or a limit switch. Its function is to convert the mechanical displacement control signal into an electrical signal on and off function in the circuit, so that the operating state of the equipment system is changed, that is, the force or torque generated by the mechanical action is pressed. The travel switch button has a certain displacement to drive the on-off of the internal contacts of the push-type travel switch, so as to control the connection or disconnection of one or more electrical signals, so as to convert the control signal or realize the circuit (or control signal) security protection etc. Different types of push travel switches are widely used in automatic control systems or control function conversion modules of electrom...

AI Technical Summary

Problems solved by technology

However, with the development trend of miniaturization, light weight, low cost and high reliability of automatic control systems, especially in electromechanical components such as engineering vehicles, industrial and mining enterprises, and harsh environment operating robots, the push-type When the limit switch puts forward the requirements of high impact resistance, high vibration resistance, miniaturization, high reliability and low cost, the above two solutions will not be the best choice

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