Flexible PCB voice coil connector
US7447327B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 11, 2005 |
| Grant date | Nov 4, 2008 |
| Priority date | — |
| Expiry date | Jan 19, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05K1/0393
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In an electroacoustic transducer, a pair of coil terminals elongating from a voice coil are electrically connected to a pair of terminal members attached to a frame via a flexible printed circuit board, respectively. According to the configuration, even in a case where an electroacoustic transducer is used at a high sound pressure, breakage of the coil terminals hardly occurs. In the flexible printed circuit board, the width of an intermediate portion is set to be smaller than the widths of an end portion on the side of the coil terminals and an end portion on the side of the terminal members. Therefore, the flexibility of the intermediate portion can be enhanced, whereby transmission of characteristic vibration of the flexible printed circuit board to a diaphragm, and stress concentration in the vicinity of the end portions are effectively suppressed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.