ZHEJIANG KANGERLE ELECTRONICS CO.,LTD

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How does push button switch work

Button switch principle-structure
The button is generally composed of a button cap, a return spring, a bridge type moving contact, a static contact, a pillar connecting rod and a shell.
The opening and closing state of the contact when the button is not subjected to external force (ie static), divided into start button (ie normally open button), stop button (ie normally closed button) and compound button (ie normally open and normally closed contacts are combined into One button). For the start button, the contact is closed when the button cap is pressed, and the contact is automatically opened and reset after being released; the opposite is true for the stop button, the contact is separated when the button cap is pressed, and the contact is automatically closed and reset after being released. The composite button is that when the button cap is pressed, the bridge-type moving contact moves downwards, so that the normally closed contact is opened first, then the normally open contact is closed; when the button cap is released, the normally open normally open contact is first After breaking and resetting, the normally open contact is closed and reset.
The principle of button switch-working principle
The working principle of the key switch is easy to understand. The principle is shown in the figure below. To put it bluntly, it is like this: there is an electromagnet adsorption device inside, when you press the button, the electromagnet inside will generate magnetism instead of electricity, and then the circuit is connected or disconnected through this adsorption device. In this way, functions such as remote control of the line are realized.
The opening and closing state of the contacts when the button is not subjected to external force (ie static), divided into start button (ie normally open button), stop button (ie normally closed button) and composite button (ie normally open and normally closed contacts are combined into One button). For the start button, the contact is closed when the button cap is pressed, and the contact is automatically disconnected and reset after being released; the opposite is true for the stop button, the contact is separated when the button cap is pressed, and the contact is automatically closed and reset after being released. The composite button means that when the button cap is pressed, the bridge-type moving contact moves downwards, so that the normally closed contact is opened first, and then the normally open contact is closed; when the button cap is released, the normally open contact is first After breaking and resetting, the normally open contact is closed and reset.

12mm组合16mm自锁三脚镀金插件 01


Post time: Sep-21-2020

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