Ultrathin balanced pressing photoelectric key structure

Abstract

The invention discloses an ultrathin balanced pressing photoelectric key structure, a grating structure is a grating wing coupled with a linkage wing, and the linkage wing and the grating wing are coupled to act up and down synchronously; a reset torsion spring with two tilting arms is arranged between the linkage wing and the grating wing, one tilting arm of the reset torsion spring provides upward elastic force for the linkage wing, the other tilting arm of the reset torsion spring provides upward elastic force for the grating wing, and the key cap is buckled on the upper portion of the linkage wing and the upper portion of the grating wing; the grating wing can be driven to move downwards by pressing any position of the keycap, so that the quantity of light received by the photosensitive element is changed to generate a key signal. According to the scheme, the grating wing and the linkage wing which are mutually coupled are adopted, so that the up-down moving stroke is further reduced on the premise of ensuring balanced and stable pressing, and the key structure can be lighter and thinner; meanwhile, the grating wing has the function of triggering a photoelectric signal, the linkage wing has the function of pressing sound production, the stroke between the grating wing and the linkage wing is limited, the overall stability is achieved, pressing recovery is rapid, and the structure is suitable for industrial mass production.

Description

technical field [0001] The invention relates to a switch device, in particular to a photoelectric switch, in particular to an ultra-thin balanced pressing photoelectric key structure, which is mainly used for peripheral devices such as keyboards and other signal input devices. Background technique [0002] The input device is a device that points to the computer to input data and information, and is a bridge for the computer to communicate with the user or other devices, such as a keyboard. The keyboard is composed of several key switches. [0003] Existing electronic devices are becoming more and more miniaturized, and the requirements for thinner and lighter keyboards are also getting higher and higher. Take the notebook computer as an example. Now the weight of the notebook computer is only about 1kg, the thickness of the whole machine is only about 13mm, and the key stroke of the switch button is only about 1.5mm. In order to meet the thin and light design of electronic...

AI Technical Summary

Problems solved by technology

In the prior art, in order to realize the balanced and stable pressing of ultra-thin key switches, scissors feet with a small key stroke are basically used to achieve this. However, the mechanism principle of the scissors feet itself limits the ability to further make it thinner.

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