| 摘要 |
A power transmitting coupling includes a hub member such as a yoke and a shaft such as a splined shaft fitted therein axially slidably but nonrotatably relative to each other, and detent balls accommodated in the hub member and partially extending into a ball setting groove of the shaft for preventing the shaft from removing from the hub member. According to the invention, the coupling comprises slide means slidable on the hub member into a ball holding position where the detent balls partially extending into the ball setting groove of the shaft are held and a ball non-holding position where the detent balls are not held, spring means for urging the slide means in one direction, holding position holding means for holding the slide means at the ball holding position in cooperation with the spring means, and non-holding position holding means for holding the slide means at the ball non-holding position in cooperation with the spring means but releasing the slide means when the detent balls move outwardly, thereby enabling the shaft and the hub member to be connected and disconnected only by once sliding the slide means without holding the slide means by a hand of an operator during the connecting and disconnecting operation.
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