| 摘要 |
<p>A bicycle shift position control mechanism (43) is configured to provide a bicycle shifting unit (33) with multiple gear shifting in a single upshift operation or a single downshift operation. The shift position control mechanism (43) has a wire take up member (63), a positioning member (62), a first position maintaining member (68) and a second position maintaining member (69). The positioning member (62) rotates with the wire take up member (63) between one of a plurality of predetermined shift positions. The first position maintaining member (68) selectively moves between a first engagement position that holds the positioning member (62) in one of the predetermined shift positions and a first disengagement position that releases the positioning member (62) for rotational movement. The second position maintaining member (69) selectively moves between a second engagement position that holds the positioning member (62) in one of the predetermined shift positions and a second disengagement position that releases the positioning member (62) for rotational movement.</p> |
