Speaker having first diaphragm, second diaphragm with different stiffness from first diaphragm, and driver located in through hole of first diaphragm
US11968507B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 30, 2021 |
| Grant date | Apr 23, 2024 |
| Priority date | — |
| Expiry date | Dec 30, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2400/00
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
One of the main objects of the present invention is to provide a speaker with optimized overall acoustic performance. To achieve the above-mentioned object, the present invention provides a speaker including: a base with an accommodation cavity; a vibration sounding assembly accommodated in the accommodation cavity, including a first diaphragm and a second diaphragm, and a driver fixed to the first diaphragm for driving the first diaphragm and the second diaphragm to vibrate and produce sound. The second diaphragm stacks on the first diaphragm, and a stiffness of the second diaphragm is different from a stiffness of the first diaphragm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.