| 摘要 |
PROBLEM TO BE SOLVED: To provide an inversion motion mechanism that uses a small-sized motor to rapidly move an accessory with a large mass in normal and inversion directions.SOLUTION: An inversion motion mechanism comprises: a drive rotor 5 that uses a motor to rotate in both normal and inversion directions; a swing member 2 that is pivotally supported by the same shaft as the drive rotor 5; a torsion coil spring 9 that is suspended between the drive rotor 5 and the swing member 2 and is energized by the drive rotor 5; a lock claw 17 that locks the swing member 2 at a prescribed position; and cam-shaped release means for the lock claw 17 that is formed on the drive rotor 5. The mechanism uses the torsion coil spring 9 to rapidly swing the swing member 2 in both normal and inverse directions by releasing the lock claw 17 in a state of energizing the torsion coil spring 9. |
