The push button switch is a kind of switch that uses the button pusher transmission mechanism to connect or disconnect the moving contact and the static contact, and then realize the circuit switching through this. Therefore, fully understanding the principle of the push button switch can better grasp the working mode of the push button switch and make household or industrial electricity use safer.

We all know that the button switch is a switch controller with a relatively simple structure but a wide range of applications. The button switch can complete a series of basic switch controls, such as start, stop, forward and reverse, variable speed and other basic controls. Why can the button switch complete these controls under a relatively simple structure? This requires a series of analysis from some principles of the button switch.

There are generally many kinds of push button switches with different structures, which are divided into ordinary push button type, mushroom head type, self-locking type, self-resetting type, rotary handle type, indicator light type, light symbol type and key type, etc. Although the structure is different, their working principle is still basically the same. There are single-button, double-button, three-button and different combinations of push button switches. If we want to understand its working principle, we must first know the structure of the button switch, and analyze its working principle from the structure.

Since most of the commonly used structures are building blocks, we will use the above picture to understand the principle of some building block button switches. First of all, it has a button cap, so it can be called a button switch, which is the part that controls the entire button switch. Generally speaking, push button switches have two fixed contacts, which are divided into normally closed contacts and normally open contacts. We need to know that the normally closed contacts are disconnected first, while the normally open contacts are To be closed later, these two normally closed and normally open contacts are the changeover contacts of the entire button switch and are the core part of the button switch. Then we can see from the figure that there is a movable contact and wiring in the push button switch, which are indispensable accessories for the push button switch.

To put it simply, the working principle of this button switch is to press or pull out the button cap by hand, so that it can operate along the bearing in the switch, press down or pull out the switch contact in the switch, and then The push button switch works just fine.

The above contents are some simple introductions about the principle of button switches. I hope that through some preliminary understanding of these contents, I can provide you with some small help and make household or industrial electricity use safer.