| 摘要 |
PROBLEM TO BE SOLVED: To provide a motor capable of suppressing its noise and vibration. SOLUTION: An opening portion 15a of a gear case 15 coupled to a yoke 11 is formed in an elliptic shape consisting of a pair of flange side flat portions opposing each other and a pair of arc portions for coupling the pair of flange side flat portions. A rib 15h extending in parallel to the axial core of an armature shaft 21 from the flange portion 15b of the opening portion 15a is formed on a pair of opening portion side flat portions 15i, 15i integrally formed on the pair of flange portion side flat portions opposing each other. The rib 15h is formed in a triangle so that its height becomes lower as separated from the flange portion 15b of the pair of opening portion side flat portions 15i, 15i. COPYRIGHT: (C)2010,JPO&INPIT
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