Electro-acoustic transducer
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United States of America Patent
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Issued Date -
Sep 11, 2014
app pub date -
Mar 3, 2014
filing date -
Mar 5, 2013
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
An electro-acoustic transducer includes a frame having sidewalls, a magnetic circuit system received in the frame and a vibration system fixed to the frame. The vibration system includes a vibrating diaphragm and a driving voice coil for driving the vibrating diaphragm to move. The electro-acoustic transducer further includes a communication coil, which is fixed within the frame and located below the vibrating diaphragm and surrounding the driving voice coil. The communication coil is a symmetric loop structure, which includes four straight edge portions and curved corner portions located at four corners to connect adjacent straight edge portions. A distance between each of the curved corner portions and the driving voice coil is greater than a distance between each of the straight edge portions and the driving voice coil.
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