SOUND PRODUCTION UNIT
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United States of America Patent
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app pub date -
Jan 26, 2017
filing date -
Dec 12, 2016
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Abstract
The present disclosure provides a sound production unit. The sound production unit includes a frame with a receiving space encircled by a frame side wall, a magnetic circuit system and a vibrating system received in the receiving space, and a front cover matched with the frame, wherein the vibrating system comprises a diaphragm fixedly connected to the frame, the front cover comprises a bottom surface connected with the diaphragm and a front cover outside surface bent and extended from the edge of the bottom surface, the front cover outside surface is a metal surface, and the sound production unit further comprises an insulating film stuck on the front cover outside surface.
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