Speaker
US9485582B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 7, 2015 |
| Grant date | Nov 1, 2016 |
| Priority date | — |
| Expiry date | Jul 7, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2307/207
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An edge has an inner circumferential portion connected to an outer circumferential portion of a diaphragm, and is made of an annular elastic deformation member. A frame is connected to an outer circumferential portion of the edge, and supports the diaphragm through the edge. A magnetic circuit displaces the diaphragm in a first direction that is a sound emission direction and in a second direction that is an opposite direction to the sound emission direction, and vibrates the diaphragm. In a region between the inner circumferential portion and outer circumferential portion of the edge, the edge includes a rib, which is protruded in the second direction, and limits a stroke of the diaphragm in the second direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.