Switch

Abstract

The invention discloses a switch which comprises a reversing component and a shell, wherein the reversing component comprises a switch driving device as well as a left wiring piece and a right wiring piece which are clamped into the bottom of the shell; a bracket is arranged at the upper part of the left wiring piece; an arc-shaped reversing piece which swings left and right is transversely arranged above the bracket; an action end of the switch driving device is in contact sliding with the upper surface of the reversing piece; a static contact is arranged on the upper surface of the right wiring piece; and a moving contact is arranged in a position corresponding to the static contact on the lower surface of the reversing piece. Under the propping action of the action end of the switch driving device, the switch driving device swings leftwards or rightwards after being stressed, then the swinging state of the reversing piece is changed, the contact situation of the moving contact on the lower surface of the reversing piece and the static contact on the right wiring piece is changed, and circuit on or off can be achieved. The design of the switch has the advantages of being rapid and accurate in reaction, good in dustproof effect and low in fault rate.

Description

technical field [0001] The present invention relates to a switch. Background technique [0002] In the motor switch industry, the switches of electric drills and other motors are long-pressed to turn on and released to disconnect. The current DC switch includes a base and a cover that are fixed to each other. The cover is installed with a circuit board, and the base is installed with a mutual Two sets of moving contact components and static contact components are matched. A support frame is separately installed above the moving contact component and the static contact component. The support frame is also provided with a swingable commutator piece, and a push rod is installed on the base. The rod-driven moving contact assembly controls the connection or disconnection of the moving contact assembly on the lower surface of the commutator segment with the static contact assembly. There are many components used in this type of prior art, and the support frame, the moving contact ...

AI Technical Summary

Problems solved by technology

[0002] In the motor switch industry, the switches of motors such as electric drills are long-pressed to turn on and released to turn off, while the current DC switch includes a base and a cover plate fixed to each other, a circuit board is installed on the cover plate, and mutual There are two sets of moving contact assemblies and static contact assemblies that are matched. A support frame is separately installed above the dynamic contact assembly and static contact assembly. A swingable reversing piece is also provided on the support frame. A push rod is installed on the base. The rod drives the moving contact assembly to control the connection or disconnection of the moving contact assembly on the lower surface of the commutator piece with the static contact assembly. There are many parts used in this type of prior art, and the support frame, the dynamic contact assembly and the static contact assembly, etc. Parts need to use a large number of assembly auxiliary parts for auxiliary positioning before proceeding to the overall assembly of the reversing components. The assembly efficiency is relatively low, and its cost is high, the structure is relatively complicated, and the failure rate after long-term use is also high. The above shortcomings Not only does it bring unnecessary maintenance to the user, but it also increases the user's use cost. In the existing switch technology, more sliding reversing is used and there is a delay in reversing, so the reversing is relatively inaccurate and difficult to control. The circuit is closed and disconnected. In addition, this type of switch is mostly used in a more complex environment. Under long-term working conditions, the dust in the environment has a greater impact on the switch. It is easy to damage the circuit due to a large amount of foreign matter and dust entering the switch, resulting in switch failure and inconvenience to users

In assembly, the support frame, moving contact components and static contact components are respectively installed on different plastic frames, and then fixed in the shell through the assembly of plastic frames. The assembly is complicated, there are many parts, the internal space is small, and the overall volume is large. Difficult to assemble

Images