| 摘要 |
PROBLEM TO BE SOLVED: To provide a bearing structure for motor which can suppress the occurrence of vibration by imparting an unbalanced load to a ball bearing, with a simple constitution. SOLUTION: A shaft section 16b of a rear-end bearing shaft section 16 is rotatably supported by a ball bearing 18 housed in the housing section 12a of a motor housing 12. The inside diameter of an inner race 18b of the bearing 18 is larger than the outside diameter of the shaft section 16b. In addition, a wave washer 24 is put on the shaft section 16b, in a compressed state between a flange section 16a and the inner race 18b. Since the washer 24 has deformed sections formed on its side face at two spots which are separated from each other at irregular intervals, the reaction (load) of the washer 24 applied to one side face of the washer between the flange section 16a and inner race 18b is not uniform but becomes a nonuniform load (unbalanced load) which varies depending upon the location. Therefore, the inner race 18b supports the bearing shaft section 16 in an inclined state. |
