Acoustic device with improved acoustic performance
US10694295B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 15, 2019 |
| Grant date | Jun 23, 2020 |
| Priority date | — |
| Expiry date | Jan 15, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R9/045
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Disclosed herein is an acoustic device with improved acoustic performance. The acoustic device includes: a housing that forms the appearance of the acoustic device; a magnet that generates magnetic force; a yoke that includes paramagnetic material that concentrates the magnetic force; a voice coil that vibrates due to the magnetic force when an electric signal having sound information is applied; a diaphragm that comes into close contact with the voice coil and that vibrates and generates sound in response to the vibration of the voice coil; a plate that is located between the diaphragm and the magnet; and a locking ring that is located on the plate and that fastens part of the diaphragm, wherein the sectional surface of the locking ring has a rectangular shape the height of which is greater than the width thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.