Speaker
US9820052B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 4, 2016 |
| Grant date | Nov 14, 2017 |
| Priority date | — |
| Expiry date | Mar 4, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2499/11
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A speaker is provided in the present disclosure. The speaker includes a shell, a magnetic system and a vibrating system received in the shell. The magnetic system includes a first magnet module and a second magnet module opposite to each other for forming a magnetic gap. The vibrating system includes a membrane module and a coil assembly for driving the membrane module to vibrate. The coil assembly includes a coil arranged in the magnetic gap and a coil support for supporting the coil; at least one of the first magnet module and the second magnet module includes a soft magnet unit, the soft magnet unit is arranged adjacent to the magnetic gap and faces the coil.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.