摘要 |
PROBLEM TO BE SOLVED: To provide a gear motor assembly producing less noise.SOLUTION: A gear motor assembly includes a casing having a through hole, a motor fixed to the casing, an output shaft, a gear fixed to the output shaft and driven by the motor, and a substantially tubular bearing fixed in the through hole of the casing. The gear has a shaft portion that is smoothly rotated in the bearing. A slot is formed in the inner surface of the bearing and/or the outer surface of the shaft portion and is filled with lubricant. |