Device providing haptic feedback, and component comprising said device
US11653569B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 21, 2017 |
| Grant date | May 16, 2023 |
| Priority date | — |
| Expiry date | Dec 29, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10N30/505
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A device having a piezoelectric actuator, which can both detect the actuation force and provide a haptic feedback. The linear expansion of the actuator can be amplified in the desired direction by a deformable metal sheet. The actuator has a flat piezoelectric basic body having plane-parallel main surfaces and two electrodes. The body is designed to generate an active haptic feedback when a force exerted upon the basic body is detected. The haptic feedback is generated in that an actuator voltage, which, by piezoelectric actuator action, results in a change in the length of the basic body, is applied between the electrodes. A cymbal-shaped metal sheet is fastened to the basic body. The body is fixed with the truncated cone vertices between a base and an actuation means connected to the base and fixed by means of a bias, which is set as tensile or compressive stress.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.