Inner magnet type microspeaker
US9185494B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 20, 2014 |
| Grant date | Nov 10, 2015 |
| Priority date | — |
| Expiry date | Feb 20, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R7/122
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An inner magnet type microspeaker including a suspension is provided which can maximize the size of a magnet. The inner magnet type microspeaker includes: a frame; a yoke installed inside of the frame and including a bottom surface and sidewalls bent upward from the bottom surface; a magnet bonded to an inside of the yoke; a voice coil located in a gap portion between the sidewalls of the yoke and the magnet; a diaphragm that vibrates by the voice coil; and a suspension where the voice coil is attached, and which guides vibrations of the diaphragm and the voice coil and includes a ring-shaped inner peripheral portion and an outer peripheral portion that surrounds the inner peripheral portion, spaced a predetermined distance apart from the inner peripheral portion, with one end and the other end being connected to the inner peripheral portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.