Vibrator
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United States of America Patent
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Sep 7, 2010
Grant Date -
Aug 23, 2007
app pub date -
Feb 23, 2007
filing date -
Feb 23, 2006
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A vibrator includes a voice coil and a vibrating member that vibrates along the axial direction of the voice coil when it is excited by application of an alternating current thereto. A suspension supports the vibrating member vibratably in the axial direction. A casing houses the voice coil, the vibrating member, and the suspension. A buffering member is provided so that the vibrating member strikes the buffering member when the vibration amplitude of the vibrating member has exceeded a predetermined value in a resonance region around the resonance point of the vibrating member.
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