Operating element device
US9269336B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 9, 2014 |
| Grant date | Feb 23, 2016 |
| Priority date | — |
| Expiry date | Sep 9, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10H1/346
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A key (11) is supported by key supporting portions (32) so that the key (11) can pivot. A reaction force generation member (22) is shaped like a dome to be elastically deformed by a key-depression of the key (11). At the time of the elastic deformation, the reaction force generation member (22) increases a reaction force from the beginning with an increasing amount of elastic deformation. After the reaction force reaches its peak, the reaction force generation member (22) buckles to reduce the reaction force. A normal line of a plane (P1) including a pivot axis (C) of the key (11) and a depression point of a depression portion (11a) is designed to be roughly parallel to an axis line (Y1) of the reaction force generation member (22) at the point in time when the reaction force of the reaction force generation member (22) reaches its peak.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.