Speaker box
US11917362B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 27, 2022 |
| Grant date | Feb 27, 2024 |
| Priority date | — |
| Expiry date | Oct 18, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R9/06
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The present invention provides a speaker box including a housing with a sound hole and a speaker therein. The speaker includes a frame, a vibration system, a magnetic circuit system, and a covering shell. The vibration system includes a diaphragm dividing a receiving room of the housing into a front cavity communicating with the sound hole and a rear cavity, a voice coil assembly. The magnetic circuit system includes a yoke. The covering shell divides the rear cavity into a first rear cavity inside the speaker and a second rear cavity outside the speaker. The covering shell includes a bottom wall and a side wall. A recessing portion formed on the side wall, and the recessing portion communicates the first rear cavity with the second rear cavity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.