Key structure of operation section of electronic device, input device and electronic device using same
US8692775B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 14, 2010 |
| Grant date | Apr 8, 2014 |
| Priority date | — |
| Expiry date | Oct 17, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2223/0345
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
There is provided a key structure of an operation section of an electronic device that can avoid an occurrence of operational errors of erroneously pressing down an operation key and can reliably secure a large area for input operations and for indicating information. The key structure of the operation section of the electronic device having a plurality of the operation keys 14, 14, . . . arranged in parallel in a manner to be adjacent to one another. The operation portion having a step height (wall surface 23) is formed in the operation key that can perform input operations by being pressed down with a finger of an operator. The operation portion of the operation key is made up of a higher step surface located in a higher level portion in a pressed-down direction and a lower step surface formed at least on an adjacent side where the operation keys are adjacent to one another in a level portion lower than the higher step surface in the pressed-down direction. Each of the higher step surface and the lower step surface is formed so as to be approximately planar and a width of the lower step surface is set to be not less than a half of an error width W of the press-down operation as a…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.