Button structure and design method for latching prevention
US7868872B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 12, 2006 |
| Grant date | Jan 11, 2011 |
| Priority date | — |
| Expiry date | Oct 31, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2221/06
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A latch-free button structure and its design method that can be applied to most electronic devices. The button includes a body, a wing plate, a positioning plate and a contact rod. The top end of the wing plate joins with the side edges of the button body and the positioning plate joins with the lower end of the wing plate. The contact rod is attached to the bottom section of the button body. If the height from the bottom of the contact rod to the contact point on the circuit board is B; the height from the bottom section of the button body to the surface of the housing is C; the height of the wing plate is A; the height of the sidewall of the button cover close to the button body is D and the height from the uppermost section of the button body to the top end of the wing plate is E, the value of A, B, C, D and E must follow the inequality relationships E−B>D, E−D>A, and D>A≧C≧B.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.