| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a technology for avoiding or suppressing electric corrosion of a bearing. <P>SOLUTION: A motor 100 includes a bearing 2 containing an outer ring 21 and an inner ring 22, a bracket 4 for supporting the outer ring 21, a conductive shaft 6 supported by the inner ring 22, a rotor 8 attached with the conductive shaft 6, an armature 10 which contains an armature core 12 insulated from the bracket 4 and an armature winding 14 provided to the armature core 12, a circuit 202 for supplying an armature current to the armature winding 14, and a power supply pattern 204 of the circuit 202. The power supply pattern 204 includes a circuit board 20 of which the armature core 12 side is larger in area than the side opposite to the armature 10. <P>COPYRIGHT: (C)2012,JPO&INPIT |
