| 摘要 |
PROBLEM TO BE SOLVED: To perform a smooth operation and prevent occurrence of irregular noise and the like at a lock type bidirectional clutch for transmitting rotation from an input side and inhibiting transmittance of rotation from an output side.SOLUTION: A first planetary gear mechanism M1 having a fixed sun gear SGf and a second planetary gear mechanism M2 having a rotating sun gear SGr are combined and mounted within a housing 1 including an input shaft 2 and an output shaft 3. Then, both sun gears have a difference in their number of teeth and at the same time both sun gears are engaged with a planetary gear that is common to the first planetary gear mechanism M1 and the second planetary gear mechanism M2, and additionally a ring gear RG of the first planetary gear mechanism is connected to the input shaft 2 and the rotating sun gear SGr is connected to the output shaft 3. Although a normal rotation and a reverse rotation from the input shaft 2 are reduced and transmitted to the output shaft 3, when it is driven from the output shaft 3, the output shaft 3 is locked and a power force transmittance is inhibited due to difference in the number of teeth between both sun gears.SELECTED DRAWING: Figure 1 |
