| 摘要 |
PROBLEM TO BE SOLVED: To provide a motor with speed reduction mechanism, capable of switching a rotating speed even when the motor is made to have multiple poles. SOLUTION: Four magnets 22 are attached on the inner surface of a wiper motor 18 equipped with a speed reduction mechanism for reducing the rotation of an armature shaft and transmitting the rotation to an output shaft, and a winding 28 is attached on sixteen slots 27a-27p formed on an armature core 27 by superimposed winding. A commutator 31 having sixteen commutator pieces 31a-31p is fixed to the armature shaft, the winding 28 is connected to the commutator pieces 31a-31p, and the commutator pieces to have the same potential are electrically connected to each other by connection lines 41a-41h. A common brush 32 and a low-speed operation brush 33 which each slidably contact the commutator 31 are provided so as to be shifted by 90°in a rotating direction, and a high-speed operation brush 36 slidably contacting the commutator 31 is provided so as to be shifted from the low-speed operation brush 33 in the rotating direction. COPYRIGHT: (C)2010,JPO&INPIT
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