PROBLEM TO BE SOLVED: To certainly lock an output shaft without deteriorating operability, even if rotation torque in forward and reverse direction is continuously and reversely inputted to the output shaft.SOLUTION: A brake side clutch portion 12 which transmits rotation torque inputted from a lever side clutch portion to an output side, and intercepts rotation torque reversely inputted from the output side, is equipped with an inner ring 15; an outer ring 23 which has recessed and projecting portions 23a; an output shaft 22; an engaging piece 27 which has recessed and projecting portion 27a capable of engaging with the recessed and projecting portions 23a of the outer ring 23; and a control mechanism 33 which engages the engaging piece 27 with the outer ring 23 by the engagement between the recessed and projecting portions 27a of the engaging piece 27 and the recessed and projecting portions 23a of the outer ring 23 when intercepting the rotation torque, and disengages the engaging piece 27 from the outer ring 23 by releasing the engagement between the recessed and projecting portions 27a and the recessed and projecting portions 23a when transmitting the rotation torque. The control mechanism 33 is equipped with a supporting portion 34 which is provided between the engaging piece 27 and the inner ring 15, and maintains an engaging state between the engaging piece 27 and the outer ring 23 when intercepting the rotation torque.SELECTED DRAWING: Figure 3
【課題】 正逆方向の回転トルクが連続して出力軸に逆入力されても、操作性の悪化を招くことなく、出力軸を確実にロックする。【解決手段】 レバー側クラッチ部から入力される回転トルクを出力側へ伝達すると共に、出力側から逆入力される回転トルクを遮断するブレーキ側クラッチ部12は、内輪15と、凹凸部23aを有する外輪23と、出力軸22と、外輪23の凹凸部23aと噛み合い可能な凹凸部27aを有する係合子27と、回転トルクの遮断時に係合子27の凹凸部27aと外輪23の凹凸部23aとの噛み合いにより係合子27を外輪23に係合させ、回転トルクの伝達時に凹凸部27aと凹凸部23aとの噛み合い解除により係合子27を外輪23から離脱させる制御機構33とを備え、制御機構33は、係合子27と内輪15との間に設けられ、回転トルクの遮断時に係合子27と外輪23との係合状態を保持する支持部34を具備する。【選択図】 図3
CLUTCH UNIT
クラッチユニット
2018-03-08
Patent
Electronic Resource
Japanese