Speaker unit for earphone
US11496839B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 27, 2021 |
| Grant date | Nov 8, 2022 |
| Priority date | — |
| Expiry date | Jul 27, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2499/11
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A speaker unit is provided. The speaker unit may include a frame; a yoke elongated on the frame along a front-to-rear direction; a first magnet disposed on one side of the yoke; a first plate disposed on one side of the first magnet; a first diaphragm disposed on one side of the first plate; a first coil fixed to the first diaphragm; a second magnet disposed on the other side of the yoke; a second plate disposed on the other side of the second magnet; a second diaphragm disposed on the other side of the second plate; a substrate disposed on the frame; a microphone electrically connected to the substrate; and a second coil fixed to the second diaphragm, wherein the first magnet and the second magnet are both in contact with the yoke, the frame includes a seating portion, and the microphone is disposed in the seating portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.