Keyswitch
US11223357B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 20, 2020 |
| Grant date | Jan 11, 2022 |
| Priority date | — |
| Expiry date | Jun 11, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K2217/96062
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A keyswitch includes a circuit board, a bottom board abutting against the circuit board, a cap, a light receiver and a light emitter disposed on the circuit board and opposite to each other, a base disposed on the circuit board, a cover disposed on the base, a first elastic member disposed through the cover and the base, a support device, and a second elastic member fixed to the base and having a flexible rod. The support device is movably connected to the cap and bottom board and has a sheet structure. When the cap is pressed, the sheet structure blocks light transmission between the light emitter and the light receiver to generate a triggering signal. When the cap is pressed to make the flexible rod deform downward with the sheet structure and then cross the sheet structure, the flexible rod is released to collide with the cover to make sound.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.