Mechanical switch of photoelectrical type and a key assembly of a keyboard
US11081300B2 · kind B2 · utility
1Cited by
7References
9Claims
0Family size
Inventor
Key dates
| Filing date | Mar 13, 2017 |
| Grant date | Aug 3, 2021 |
| Priority date | — |
| Expiry date | Sep 19, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2239/022
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A photoelectrical type of mechanical switch, wherein a chute is provided on the bracket; the ram upper end is provided with a protruding strip arranged in the chute which can freely move along the chute; when the bracket moves up and down, the protruding strip is restricted by the chute and drives the ram to rotate by itself. Adoption of the independent sound optical path structure enables its exhibition of more obvious key-pressing stage sense and key-pressing sound when pressing the press shaft, and can realize good “ON/OFF” function of optical path.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.