Speaker
US12003937B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 4, 2022 |
| Grant date | Jun 4, 2024 |
| Priority date | — |
| Expiry date | Jan 28, 2043 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2209/041
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A speaker includes a frame, a vibration system, and a magnetic circuit system. The vibration system and the magnetic circuit system are respectively disposed on the frame. The vibration system includes a sound film, flexible circuit boards, a connecting rack, and a voice coil. The flexible circuit boards are disposed at intervals with the sound film. The connecting rack is connected with the sound film and the flexible circuit boards. The voice coil is fixed to the connecting rack. The voice coil includes a first voice coil and a second voice coil, and the second voice coil surrounds outside the first voice coil. The speaker of the present disclosure effectively solves the problem of supplying power to the first voice coil during the voice coil driving. The voice coil driving effectively improves the BL, provides a larger driving force, and improves sensitivity, so that performance of the speaker is better.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.