Micro switch principle

作者： 发布于：2017-01-10 23:26:55 点击量：1222

"Micro-switch" in the "micro" refers to not a slight move can trigger the action of the meaning of the switch, but refers to the switch action is very weak, is the moment you can complete, then Xiaobian For your details on the principle of micro-switch.

First, the principle of micro-switch - - Introduction

 

Micro switch, the English name for the Micro Switch, referred to as SM, also known as sensitive switch, the official definition of "a small contact with the interval and fast moving mechanism, with the provisions of the specified stroke and the provisions of the switch action of the contact mechanism, Covered by a shell, the external drive bar of a switch, "In fact, micro-switch refers to a very fast switch off, with a small contact spacing, short action stroke, according to the power of small, Characteristics, the following to follow Xiaobian to learn more about the structure and principle of micro-switch it ~

Second, the principle of micro-switch - - structure

 

The micro switch is mainly composed of the actuator part, the contact part, the shell part, the quick moving mechanism part and the terminal part. Wherein the actuator section is mainly used for the transmission of external forces or strokes to the internal mechanism; the contact portion is mainly used for the effective opening or closing of the electrical circuit; the housing portion is mainly used to isolate the internal mechanism from the outside, and has a high insulation And the mechanical strength; the quick-moving mechanism part is the core part of the micro-switch, the use of high-quality conductive spring material, mainly for the implementation of quick action; terminal part is mainly used for connection with the external.

Third, the principle of micro-switch

 

When the external force acts on the actuator section (the display form of the actuator section on the particular switch may be slightly different, with some pins, buttons, and some lever, roller, etc.), the corresponding actuator member transmits the force to the action spring The chip and the corresponding displacement, when the reed moved to a critical point when the trigger switch action, so that the action of the reed end of the movable contact and fixed contact quickly connected or disconnected.

 

When the external force acting on the actuator section is withdrawn, the operating reed produces a reverse displacement, and when the reed is moved to a fixed critical point, the trigger is triggered to reverse the momentary action.

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