Patent ID: 7673731
Filing Date: 2010-03-09
Classification: F16D

Abstract:
1. A two-way clutch comprising: a rotational driving unit to be rotated by an external driving device; a rotational driven unit to be brought into contact with the rotational driving unit in a circumferential direction, and to be rotated by the rotational driving unit; a non-rotatable annular collar arranged at an outer periphery of the rotational driven unit; and an interposed member interposed between the rotational driven unit and the collar, wherein a large space portion is formed in a radial direction of the rotational driven unit between an outer peripheral surface of the rotational driven unit and an inner peripheral surface of the collar, small space portions are formed in the radial direction of the rotational driven unit, at both circumferential sides of the large space portion, and between the outer peripheral surface of the rotational driven unit and the inner peripheral surface of the collar, a distance of the small space portions in the radial direction of the rotational driven unit is smaller than that of the large space portion, a length of the interposed member in the radial direction of the rotational driven unit is smaller than the distance of the large space portion but larger than the distance of the small space portion, a projection is formed on the rotational driving unit for pushing the interposed member toward the large space portion, when the rotational driving unit is brought into contact with the rotational driven unit in the circumferential direction, and a recess is formed in the inner peripheral surface, so that the interposed member is engaged with the recess when the rotational driven unit is locked to the collar via the interposed member.