Dial recliner

摘要

The dial recliner includes a holder and a sector gear and also comprises a brake spring, a cam, a pair of clutch shoes and a spring which are accommodated and supported between the holder and the sector gear. The dial recliner also comprises a housing to maintain a combined state between the holder and the sector gear. The holder has inner teeth of a ring shape at its outer circular part and a boss at its center part to support a shaft. The sector gear has outer teeth to intermesh with the inner teeth of the holder. When intermeshed, the boss of the holder and a shaft hole of the sector gear become eccentric between their centers. The clutch shoe is supported by the brake spring which is elastically held around the boss of the holder so that a circular drifting movement of the clutch shoe can be prevented.

主权项

1. A dial recliner comprising:
a holder having inner teeth at its outer circular part and a boss at its center part; a sector gear having outer teeth at its outer circular part which intermeshes with the inner teeth of the holder so that the sector gear can roll in the holder, and a circular receiving part which has its center eccentric from a center of the boss and surrounds the boss; a brake spring of a ring shape elastically held around an outer surface of the boss of the holder and having a pair of protruding ends which are separated therebetween in a circular direction with a predetermined angle; a bearing inserted in the receiving part of the sector gear to be supported in a radial direction and receiving therein the boss whose center is eccentric from that of the bearing; a cam having a center shaft part which is inserted into the boss, an operating cam part which adjoins an inner surface of the bearing and a spring operating part which is interposed between a pair of the protruding ends of the brake spring; and a pair of clutch shoes radially interposed between the brake spring and the bearing and circularly interposed between the operating cam part and one of the protruding ends respectively.