Terminal apparatus
US11490193B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 31, 2019 |
| Grant date | Nov 1, 2022 |
| Priority date | — |
| Expiry date | May 31, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2499/11
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Disclosed is a terminal apparatus, including a protective shell and a sounding device installed in the protective shell, where the sounding device includes a vibration system and a magnetic circuit system; where the vibration system includes a vibration diaphragm including a first surface and a second surface facing away from the first surface; the magnetic circuit system is located on a side of the second surface of the vibration diaphragm; the sounding device defines a first sounding hole at a position in communication with a space on a side of the first surface, and a second sounding hole at a position in communication with a space on the side of the second surface; and the protective shell defines a first terminal sounding hole in communication with the first sounding hole, and a second terminal sounding hole in communication with the second sounding hole.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.