Key switch device
US7319202B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 28, 2006 |
| Grant date | Jan 15, 2008 |
| Priority date | — |
| Expiry date | Dec 28, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H3/125
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A first bearing member is provided on a key top. A second bearing member is provided on the key top. A first guide member is provided on a board. A second guide member is provided on the board. A first link member is disposed between the board and the key top, and has a first end portion rotatably supported by the first bearing member and a second end portion engaged with the first guide member. A second link member is disposed between the board and the key top, and has a third end portion rotatably supported by the second bearing member and a fourth end portion engaged with the second guide member. A third link member is disposed between the board and the key top. The first link member, the second link member, and the third link member are not in contact with each other. The second end portion is slidable relative to the first guide member in a first horizontal direction so that the first end portion is movable in a vertical direction. The fourth end portion is slidable relative to the second guide member in a second horizontal direction opposite to the first horizontal direction so that the third end portion is movable in the vertical direction. The first link member and the seco…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.