Wiper motor
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United States of America Patent
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Jul 18, 2017
Grant Date -
Jun 20, 2013
app pub date -
Aug 24, 2011
filing date -
Sep 2, 2010
priority date (Note) -
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Abstract
A wiper motor includes a reduction mechanism (26) contained in a reduction mechanism containing chamber (27) of a gear frame (21) and configured to reduce and transmit a rotation to a worm wheel (35); and a motion conversion mechanism (29) contained in a motion conversion mechanism containing chamber (30) of the gear frame (21) and configured to convert and output a rocking motion to an output shaft (28). A support surface (37) set up flush with the other end surface (35b) of the worm wheel (35) in the axial direction rotatably contained in the reduction mechanism containing chamber (27) is formed on the inner surface of the bottom wall (30a) of the motion conversion mechanism containing chamber (30). The support surface (37) is formed over the entire area facing a pinion gear (40) and the motion conversion member (41) on the bottom wall (30a) of the motion conversion mechanism containing chamber (30).
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