Speaker
US12363483B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 25, 2023 |
| Grant date | Jul 15, 2025 |
| Priority date | — |
| Expiry date | Mar 29, 2044 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2400/11
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The present invention provides a speaker including a first frame, a second frame forming a receiving room with the first frame, a first vibration system, a second vibration system, and a magnetic circuit system. The first vibration system includes a first diaphragm and a first voice coil. The second vibration system includes a second diaphragm and a second voice coil. Winding planes of the first voice coil and the second voice coil are parallel to a vibration direction of the first diaphragm. Taking a center point of the speaker as the center, a structure of the first voice coil is centrosymmetric with the structure of the second voice coil. The speaker of the present invention is narrower in size, the upper and lower amplitudes are synchronized, and the functions are diverse. The two diaphragms can be driven separately to achieve the effect of sensitivity superposition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.