Pulling switch for electric power

Abstract

The invention relates to a power supply pull-board switch, which comprises a switch box, a box cover, a first terminal, a second terminal, a spring leaf and a telescopic mechanism. The spring leaf is in contact with one end of the telescopic mechanism through the second terminal; the telescopic mechanism comprises a guide shell body, a guide pipe, a guide sleeve, a thimble, a compression shaft head, a reset spring, a universal compression cap, a compression spring and a reset spring; the cap edge of the universal compression cap is in contact with the inner wall of the guide shell body; and the cap body thereof is positioned outside the guide shell body. In the invention, the direct contact of a pull wire of the switch with the spring leaf is replaced by the manner that the pull wire is led out of one end of the telescopic mechanism or the universal compression cap is directly turned to control the expansion of the telescopic mechanism, thereby achieving the pulling and turning purposes and solving a series of problems caused by the easy breaking of the power supply pull wire, and the like. In addition, the telescopic mechanism is perpendicular to the spring leaf, so as to ensure the on-off status of the spring leaf and the terminals; when the thimble pushes against the spring leaf or is released, thereby enabling the switch to be operated normally and stably in more complex environment.

Description

Technical field [0001] The invention relates to a switch, in particular to a pull-wire switch for power supply. Background technique [0002] In the prior art, the general structure of the known pull switch is that the pull wire pulls a unidirectional rotating reed, which is reset by the spring and pulled once. The position of the reed short-circuits the two terminals, the circuit is connected, and the reed is pulled again. The position of the chip is that the two terminals are open and the circuit is cut off. The main problems with this structure are: the cable is not pulled in a straight line, and is easily broken, which brings unnecessary trouble to use; in addition, it is unstable during work, especially in the case of a harsh working environment, such as severe bumps. , Vibration, etc., often make the switch lose its function due to poor contact. Summary of the invention [0003] The purpose of the present invention is to provide a power pull switch which is not easy to bre...

AI Technical Summary

Problems solved by technology

The main problems of this structure are: the pull wire is not pulled in a straight line, and it is easy to be pulled off, which brings unnecessary troubles to the use; in addition, it is unstable when working, especially in the case of a relatively bad working environment, such as violent bumps. , vibration, etc., often cause the switch to lose its function due to poor contact

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