| 摘要 |
PROBLEM TO BE SOLVED: To provide a structure of a thrust bearing for a motor, which structure can surely prevent the rattle in the direction of the thrust, and also can surely prevent the generation of noises. SOLUTION: In the structure of the thrust bearing for the motor 10, both ends of a rotary shaft 20 are rotatably supported by a pair of bearings 14, 16. An elastic member is sdandwiched by a pair of thrust washers arranged between one bearing 14 and a stop ring 25 locked to the one end side of the rotary shaft. A thrust washer 27 is pushed against the bearing 16 via a collar sleeve 26 arranged on the other end side of the rotary shaft by the elastic force of the elastic member. An annular rubber damper 32 having a pair of flat washers 31, 31 fitted therein so as to come into contact with the stop ring 25 and the bearing 14 respectively is provided. The outer peripheral portions 31b of a pair of the flat washers are press-fitted into the annular recesses 32c formed on both side faces of the rubber damper. A plurality of protrusions 34 are formed on both side faces of an annular rib 33 formed between the annular recesses and the inner peripheral surface 32a of the rubber damper so as to come into contact with a pair of the flat washers. COPYRIGHT: (C)2007,JPO&INPIT
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