Bone conduction device and tympanum thereof
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United States of America Patent
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Jul 19, 2011
Grant Date -
Jul 12, 2007
app pub date -
Jun 15, 2005
filing date -
Jun 18, 2004
priority date (Note) -
In Force
status (Latency Note)
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Abstract
The object is to provide a bone conduction device and its tympanum, wherein the bone conduction device can be efficiently mounted without generating a dead space in a case having a limited installation space such as a cellular phone's case having a large display screen. A magnetic sound converter device has an outer magnetic structure wherein a voice coil (3) is mounted on a center magnetic pole (2) of a yoke (1) and a magnet (4) is arranged on the outer side of the voice coil (3). The yoke (1) and the center magnetic pole (2) thereof are vertically long, the magnet (4) is arranged on the short side edge parts on the both sides of the yoke, and a tympanum fixing part (6) is arranged on the outer side of each magnet (4) on a magnet arrangement axis.
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Family
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Cited Art Landscape
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