| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a power transmission device capable of selectively driving a first follower member and a second follower member by a single actuator motor.SOLUTION: When a switch shaft 48 is driven to a first position by a solenoid 49, a first ball 51 contacting a large-diameter part 48a of the switch shaft 48 is pushed outward in a radial direction from a first ball housing groove 46b and engaged with a first ball engagement hole 44a, and a second ball 52 contacting a small-diameter part 48c of the switch shaft 48 is detached from a second ball engagement hole 44b inward in the radial direction and housed in a second ball housing groove 47b. Thereby, a driving member 44 is cut away from the second follower member 47 and coupled with the first follower member 46, and rotation of the driving member 44 is selectively transmitted to the first follower member 46. On the contrary, when the switch shaft 48 is driven to a second position, rotation of the driving member 44 is selectively transmitted to the second follower member 47. Thereby, the first and second follower members 46, 47 can be selectively driven by one actuator motor 41 and one solenoid 49, so as to reduce the number of components and costs.</p> |
