Micro speaker unit with a waterproof effect
US11277693B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 12, 2021 |
| Grant date | Mar 15, 2022 |
| Priority date | — |
| Expiry date | Jan 12, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2400/11
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The present invention discloses a micro speaker unit with a waterproof effect, including an outer casing which is provided with an accommodation space and a sound hole, and a micro speaker which is installed in the accommodation space. The micro speaker is assembled from a vibrating diaphragm assembly and a magnetic assembly which is inter-assembled with the vibrating diaphragm assembly. The vibrating diaphragm assembly separates the accommodation space into a front chamber and a rear chamber which are not interconnected; whereas, the front chamber is connected with the sound hole. Therefore, water vapor outside the micro speaker unit can be prevented from entering into the rear chamber and the micro speaker by the vibrating diaphragm assembly, thereby improving the waterproof effect of the entire micro speaker unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.