| 摘要 |
A planetary gear module is provided to obtain various deceleration ratios by installing additionally one or more carrier assemblies between a carrier assembly and a shaft assembly. A ring gear(65) has teeth formed on an inner circumference thereof. A carrier assembly includes a planetary gear, a planetary gear plate, and a sun gear. The planetary gear is engaged with the teeth of the ring gear and a motor gear. The planetary gear plate is coupled with a center shaft of the planetary gear. The sun gear is coupled with a center of the planetary gear plate. The number of teeth of the sun gear is different from the number of teeth of the motor gear. A shaft assembly includes a shaft planetary gear(64) engaged with the ring gear and the sun gear, a shaft plate coupled with a center shaft of the shaft planetary gear, and a shaft coupled with a center of the shaft plate.
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