Bone conduction speaker
US11206500B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 10, 2020 |
| Grant date | Dec 21, 2021 |
| Priority date | — |
| Expiry date | Mar 25, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05K2201/0999
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A bone conduction speaker is provided. The bone conduction speaker includes: a housing forming an exterior; a stator including a pole piece fitted to a bottom of the housing and a voice coil arranged to an outer circumference of the pole piece; a vibrator including a permanent magnet mounted concentrically with the pole piece and voice coil, with an air gap from the pole piece, a weight attached to the permanent magnet to increase a vibration force, and a yoke attached to the permanent magnet and weight; a flexible printed circuit board mounted on the bottom of the housing, part of which extends out of the housing, and configured to transmit a signal to the voice coil; and a bone conduction pad attached to an outer surface of the housing. The vibration of the vibrator is transmitted to a bone of a user through the housing and bone conduction pad.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.