Button switch principle reveal the working mode of button switch

We all know that button switch is a switch controller with simple structure, but it is widely used.Button switch can complete a series of basic switch control, such as start, stop, positive and negative rotation, speed change and other basic control.Why can push button switches accomplish these controls in a relatively simple structure?This is going to be a series of analyses from some of the principles of the button switch.

Button switches generally have a lot of kinds, the structure is different, divided into the general press button type, mushroom head type, since the lock type, since the reset type, handle type, with lights and lights symbol type and key type and so on.Although the structures are different, they work basically the same way.Button switches have single button, double button, three button and different combinations of forms, most of the family commonly used are building block structure.If we want to understand its working principle, we must first know the structure of the button switch, from the structure to analyze its working principle.

Since most of the commonly used building block structure, we through the above figure to understand some of the building block button switch principle.First of all, it has a button cap, so it's called a button switch, it's the part that controls the whole button switch.Generally speaking, button switches have two fixed contacts, which are divided into normally closed contact and normally open contact. We need to know that normally closed contact is broken first, while normally open contact is closed later. These two normally closed and normally open contacts are the conversion contact of the whole button switch and the core part of the button switch.Then we can see from the picture that the button switch also has a movable contact and wiring, which are indispensable accessories for the button switch.

To put it simply, the working principle of this button switch is to press down or pull out on the button cap by hand. In this way, you can operate along the bearing in the switch, press down or pull out the switch contact in the switch, and then the button switch can work normally.

The above content is about the button switch principle of some simple introduction, I hope through some preliminary understanding of these content, can provide some small help for everyone, make home or industry electricity more safe.