Key structure
US11094479B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | May 28, 2020 |
| Grant date | Aug 17, 2021 |
| Priority date | — |
| Expiry date | May 28, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2233/056
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A key structure includes a keycap, a pedestal and an elastic element. The keycap includes a main body and a coupling shaft. The pedestal includes a key slot. The key slot has an upper part and a lower part. The coupling shaft is penetrated through the upper part of the key slot and movable within the key slot upwardly or downwardly. The elastic element is installed in the lower part of the key slot. After an external force applied to the keycap is released, the elastic element is elastically restored, so that the keycap is returned to an original position. At the same time, the buffering elements in the key slot interfere with the coupling shaft. Consequently, an ascending speed of the keycap is reduced, and a click sound generated from the collision between keycap and the pedestal is reduced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.