| 摘要 |
PROBLEM TO BE SOLVED: To provide a driving force transmission mechanism including two input systems, one output system, and a brake, and capable of transmitting driving force input from any of the input systems to the output system without interfering with the brake.SOLUTION: A worm mechanism (reverse input cutoff mechanism) 6 as a brake is disposed between a driving motor 5 and an electric input gear (first input member) 1. When driving force is applied to the electric input gear 1 from the driving motor 5 through the worm mechanism 6, an outer ring 11 rotated integrally with the electric input gear 1 is locked with an inner ring 12 through a roller 13, thus the driving force is transmitted to an output gear (output member) 3 rotated integrally with the inner ring 12. When the driving force is applied to a manual input shaft (second input member) 2, a lock release piece 15 rotated integrally with the manual input shaft 2, releases the lock state of the outer ring 11 and the inner ring 12, and then the driving force is transmitted to the inner ring 12 and the output gear 3.SELECTED DRAWING: Figure 1 |
