Electric motor with reduction gear mechanism
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United States of America Patent
Stats
-
Oct 20, 2009
Grant Date -
Feb 28, 2008
app pub date -
Jul 27, 2007
filing date -
Jul 28, 2006
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
In a wiper motor including a motor body and a reduction gear apparatus, an accommodating case is integrally provided on a brush holder provided to the motor body, and this accommodating case is disposed on an outer face of a gear case so as to project from a motor yoke. A noise-preventing element including a pair of choke coils and a bidirectional varistor is accommodated in the accommodating case, and the noise-preventing element is connected between a power-feeding terminal of a connector provided on the gear case and brushes. Noises acting on a power-feeding circuit are absorbed by the noise-preventing element and noises which have leaked to the outside via an opening portion of the motor yoke are absorbed by the noise-preventing element.
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