Many people are using button switch, but few people know the working principle and structure of button switch, but Dongguan Hengqi Electronic Technology Co., Ltd. is dedicated to answering questions for you. Here are the details of our explanation for you. Let more friends know the key switch.

 

What is a key switch? What are the main principles and structures? The key switch is generally composed of a handle, a slide board, a movable contact plate, a fixed terminal, a pressure spring and a housing. It controls the connection and closure of the movable contact and the fixed contact by pressing the switch handle. There are two types of key switch: single-key switch and multi-key combination switch. Single-key button switch is generally used as power switch in TV set. It is divided into two types: self-locking self-reset type (this kind of switch turns on self-locking when pressed, then opens and resets when pressed) and unlocked type (can't lock, turn on when pressed, and reset after loosening hands).

 

What are the common types of button switches? Multi-key combination key switch can be divided into self-locking, interlocking and unlocking. Eight-button or twelve-button switches were used as program pre-selection switches in the early stage of television, while four-button switches were used as washing state selection switches in the early stage of wave-wheel washing machine.

 

Above is the basic structure and working principle of the key switch. We must pay attention to these problems when we use them to ensure the normal use of the key switch.