Earphone with dual loudspeakers
US9344784B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 11, 2014 |
| Grant date | May 17, 2016 |
| Priority date | — |
| Expiry date | Nov 11, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2205/022
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An earphone with dual loudspeakers includes a casing, a retaining member, a tweeter, and a woofer. The casing has a first sound outlet passage and an accommodation space therein. The retaining member is installed in the accommodation space. Two ends of the retaining member are formed with a first accommodation cavity and a second accommodation cavity, respectively. The tweeter and the woofer are respectively installed in the first and second accommodation cavities and then installed in the casing. The tweeter has a sound outlet side facing the first sound outlet passage. A second sound outlet passage is formed between the outer wall of the tweeter and the inner wall of the first accommodation cavity. The second sound outlet passage communicates with the first sound outlet passage. The woofer has a sound outlet side facing the second sound outlet passage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.