| 摘要 |
<p>There are provided a cancellation cam 1 having projections (21, 22), an operating member (6), which is rotated by the operation of a turn lever (5) from a central neutral position to a right-operated position and a left-operated position, a rotatable cam member (11), which is movable between an interference position where it can interferes with the projections (21, 22) of the cancellation cam (1) and a stand-by position where it can not interfere with these projections, and a ratchet member (16) which does not transmit a rotational force of the cammember 811) to the operatingmember 6 when the projection (21, 22) of the cancellation cam (1) revolves in the same direction as a direction indicated by the turn lever (5), and interferes with this cam member, and which transmits the rotational force of the cam member (11) to the operating member (6) to return the operating member (6) to the neutral position when the projection (21, 22) of the cancellation cam (1) revolves in a direction opposite to the direction indicated by the turn lever (5). That surface of each of the projections (21, 22), facing the cam member (11), is formed into a tapering surface (21a, 22a). <IMAGE></p> |
