ACTUATOR UNIT AND DOOR LATCH DEVICE PROVIDED WITH ACTUATOR UNIT

摘要

When the worm wheel (50) is at a first stopping position at which the locking surface (68) of a first protrusion (62) is brought into contact with the rotation end face of a first engagement arm (58), the locking surface (68) of the first protrusion (62) and the locking surface (72) of a second protrusion (64) provided back-to-back with the pressing surface (66) of the first protrusion (62) adjacent to the locking surface (68) are positioned along the concentric arc-shaped rotation trajectories of the rotation end faces of the first engagement arm (58) and the second engagement arm (60); and when the worm wheel (50) is at a second stopping position at which the locking surface (72) of the second protrusion (64) is brought into contact with the rotation end face of the second engagement arm (60), the locking surface (72) of the second protrusion (64) and the locking surface (68) of the first protrusion (62) provided back-to-back with the pressing surface (70) of the second protrusion (64) adjacent to the locking surface (72) are positioned along the concentric arc-shaped rotation trajectories of the rotation end faces of the first engagement arm (58) and the second engagement arm (60).