What is a key switch? What are the common types of button switches? What is the design of the key switch? Let's give you a detailed introduction, please browse more.
What is the main principle and structure of the key switch? The key switch is generally composed of a handle, a sliding 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). Multi-key combination key switch can be divided into self-locking, interlocking and unlock-free structures. 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.