Spring key switch structure

Abstract

The invention relates to a spring key switch structure which mainly comprises a light guide panel, a key, a pressure block, a printed circuit board, a support part, an annular spring and a sliding block. Pressure is applied to the key, and the sliding block is driven by the key through the pressure block to drive the annular spring to be displaced downwards, so that the annular spring is gradually expanded and deformed till forming contact with a conductive contact layer along the lower lateral surface of the annular groove to realize electric conduction; the pressure is removed, and the annular spring is separated from the conductive contact layer under the action of elastic force accumulated by expansion and deformation, and returns into an annular groove to realize electric disconnection. The spring key switch structure has the advantages of large travel, strong pressure, simplicity in assembling, high reliability, low contact resistance, long service life and the like, white light illumination, blue white light illumination or various light illumination compatible with night vision can be selected according to actual needs, and the capabilities of three proofing properties, dust prevention, waterproofness and the like of the spring key switch structure are higher than those of the conventional key switch.

Description

technical field [0001] The invention relates to a spring key switch structure. Background technique [0002] The key switch is the core component of the control equipment with keys, and its comfort and reliability play a vital role in improving the combat performance of the weapon system. The key switch is to make the two poles of the key conduct through the keys on the operation panel, so as to realize the signal transmission of the key switch and achieve the purpose of control. At present, the commonly used key switch is a reed key, and its pressing force and stroke are limited to the size and structural form of the reed, which cannot meet the needs of large stroke, large pressing force and better feel. In addition, because the existing key switch cannot integrate the lighting function, it is necessary to use external lighting to realize the lighting of the mark on the surface of the key. Moreover, at the same time, the existing key switch lacks a sealing design, and its...

AI Technical Summary

Problems solved by technology

At present, the commonly used key switch is a reed key, and its pressing force and stroke are limited to the size and structure of the reed, which cannot meet the needs of large stroke, large pressing force and better feel.

In addition, because the existing key switch cannot integrate the lighting function, it is necessary to use external lighting to realize the lighting of the key surface mark

Moreover, at the same time, the existing key switch lacks a sealed design, and its "three defenses", waterproof, and dustproof capabilities are poor, which reduces the reliability of the switch

Images