| 摘要 |
A shift control device includes a shift-up control apparatus, a shift-down control apparatus and a transmission control assembly. The shift-up control apparatus includes an operable shift-up controller, a first link member connected with the shift-up controller and a first pawl pivotally mounted on the first link member. The shift-down control apparatus includes an operable shift-down controller and a second link member connected with the shift-down controller. The second link member includes first and second actuating members. The transmission control assembly includes a locking member, a housing assembly and first second pawls. The locking member is moveable in the housing at various positions for various bicycle speed transmissions and includes first and second engaging sections. The first engaging section is selectively engaged by the first pawl and the second engaging section selectively engaged by the second and third pawls.
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