Sound device
US12335708B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 19, 2023 |
| Grant date | Jun 17, 2025 |
| Priority date | — |
| Expiry date | Feb 16, 2044 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2400/11
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A sound device include a frame, a first vibration system, and a magnetic circuit system. The first vibration system includes a first vibrating diaphragm and a first voice coil. The magnetic circuit system includes a magnetic yoke, a main magnetic steel set, and auxiliary magnetic steel sets. One side, away from the magnetic yoke body, of each of the magnetic yoke extending portions is recessed to form positioning holes. Positioning blocks protruded from the frame are one-to-one inserted into the positioning holes for positioning, and one side, away from the magnetic yoke body, of each of the magnetic yoke extending portions at least partially abuts against the frame, so that the magnetic circuit system and the frame are assembled and positioned along a first direction and a second direction of the magnetic yoke. The sound device is easy to assemble and has excellent acoustic performance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.