| 摘要 |
PROBLEM TO BE SOLVED: To solve problems that a selection of gears is required for sure engagement between small and large gears, thereby preparing a great number of gears and their long use weakens the engagement forces of the gears due to friction among the gears, thereby requiring troublesome work such as replacement in the conventional drive force transmission device where an output shaft of a motor and an axle are formed in parallel and attached at a fixed interval. SOLUTION: This drive unit for the radio controlled car is formed with a storage part 7a for storing a motor 6, and an axle support part 7b for rotationally supporting the axle 5a in a single housing 7, wherein the motor which is stored in the storage part in parallel to the axle and rotatably stored in the storage part, is adapted, when the motor is rotated, to eccentrically displace the output shaft of the motor in the storage part to change an interval between a small gear 6b attached to the output shaft 6a of the motor and a large gear 5b attached to the axle. COPYRIGHT: (C)2009,JPO&INPIT
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