Speaker unit for earphone
US11102584B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 10, 2020 |
| Grant date | Aug 24, 2021 |
| Priority date | — |
| Expiry date | Mar 10, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2460/11
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Disclosed is a speaker unit for an earphone. The speaker unit includes a magnet, a voice coil, a vibration plate, a fixing ring on which an edge of the vibration plate is mounted, and a frame configured to accommodate the magnet, the upper plate, and the voice coil. Here, a pipe conduit is formed in the frame along a circumferential direction. A first hole configured to allow the pipe conduit and a first space disposed in front of the speaker unit to communicate with each other is formed in at least one first position at a top of the frame in a circumferential direction. A second hole configured to allow the pipe conduit and a second space disposed in the rear of the speaker unit to communicate with each other is formed in at lest one second position at a bottom of the frame in a circumferential direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.