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Pressing type travel switch resisting severe environment

A travel switch, harsh environment technology, applied in the direction of contact operating parts, etc., to achieve the effect of compact structure, ensuring displacement accuracy, and simplifying the structure of static contact springs

Active Publication Date: 2015-12-30
G & A TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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  • Pressing type travel switch resisting severe environment
  • Pressing type travel switch resisting severe environment
  • Pressing type travel switch resisting severe environment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0035] A push-type travel switch resistant to harsh environments, such as figure 1 with 2 As shown, it consists of a housing 1, a drive body 2 assembly, a base assembly and a compression spring 7.

[0036]The base assembly includes a base body 6 and at least one set of contact rods 5 . The base body 6 is plate-shaped, and the center position of its upper surface is provided with a positioning boss, which is used as the positioning boss of the stage clip 7 of the push-type travel switch to fix and position the lower end of the stage clip 7 . In addition, the upper surface of the base body 6 is symmetrically provided with two or more limiting protrusions 9 for limiting the downward stroke of the driving body 2 . Each group of 5 contact rods is composed of 2 contact rods 5. The 2 contact rods 5 are located on both sides of the positioning boss, and vertically penetrated and fixed in the base body 6, and are integrally injected or molded. The insert molding process makes the tw...

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H3/16
CPCH01H3/16
Inventor 于捷程贤科
Owner G & A TECH
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