Load cell array for detection of force input to an electronic device enclosure
US10782818B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 29, 2018 |
| Grant date | Sep 22, 2020 |
| Priority date | — |
| Expiry date | Aug 29, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2203/04102
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A force input sensor includes a load cell to adapt a compressive force applied to the force input sensor into a strain experienced by a strain sensor in the load cell. In particular, the load cell includes two compression plates separated from one another by a gap so as to define a volume between them. A flexible substrate (a “diaphragm”)—includes a strain sensor and is disposed and supported within the volume. One of the two compression plates includes a feature (a “loading feature”) that extends toward a central region of the flexible substrate. As a result of this construction, when the compression plates receive a compressive force, the loading feature induces a bending moment in the flexible substrate, thereby straining the strain sensor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.