Piezoelectric vibration actuator
US9931671B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 8, 2015 |
| Grant date | Apr 3, 2018 |
| Priority date | — |
| Expiry date | Jul 27, 2036 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB06B1/0648
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
There is provided a piezoelectric vibration actuator including: a flat cover member; a vibration portion including a vibration plate that is spaced apart from the cover member in parallel by a predetermined distance and a piezoelectric element that generates a vibration force by repeatedly expanding and contracting according to power applied from the outside; a weight portion disposed on the vibration portion to increase the vibration force of the piezoelectric element; and a binding member fixing the vibration portion and the weight portion.In addition, an enclosure portion is interposed between the weight portion and the vibration portion to enclose the center areas of the vibration portion, thereby making it possible to protect the piezoelectric element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.