FLAT TYPE SPEAKER COMBINING N MAGNET AND N+1 VOICE COIL PLATE
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United States of America Patent
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Issued Date -
Aug 7, 2014
app pub date -
Jun 13, 2012
filing date -
Jun 28, 2011
priority date (Note) -
Abandoned
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Abstract
The present invention relates to a flat-type speaker, and more particularly, to a flat-type speaker having one magnet for transferring vibration into a diaphragm and two voice coil plates in one magnetic circuit, wherein the voice coil plates are coupled to both sides of the magnet. The flat-type speaker in which n magnets and n+1 voice coil plates are coupled to each other consists essentially of: the magnet positioned on a central portion; a pair of yoke plates having magnetic bodies spaced a predetermined distance apart from the magnet, such that the magnet is between the yoke plates; two voice coil plates having voice coils inserted between the magnet and one of the yoke plates and between the magnet and the other yoke plate; and a diaphragm vibrated by receiving the vibration of the voice coil plates in a state where the diaphragm contacts upper ends of the voice coil plates.
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