Electroacoustic transducer with improved shock resistance
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United States of America Patent
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-
Jun 13, 2000
Grant Date -
N/A
app pub date -
Dec 1, 1997
filing date -
Dec 2, 1996
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A transducer which is particularly suitable for hearing aids is set forth which has improved resistance to mechanical shock. The transducer includes a coil having a tunnel, a magnetic member with a pair of magnets defining an air gap and an armature extending through the tunnel and into the air gap. The coil is rotated with respect to the magnetic member in a manner such that the coil forms a stop for the armature, thus preventing excessive deflection of the armature leg in the occurrence of a shock. The armature may also be provided with expanded edge portions which assist in limiting its deflection.
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