| 摘要 |
A saddle lifting device for a bicycle, enabling lifting of the saddle of the bicycle with the driver seated on the saddle and having enhanced safety and a simple structure. Urging force of a stroke spring (10) for using a saddle in a lifting direction is set to a magnitude that allows the saddle to lower when the weight of the driver seated on the saddle is directly applied to the saddle and that allow the saddle to lift when the driver seated on the saddle works pedals. When the driver is not seated on the saddle, resistance disables disengagement of switchover operation between a ratchet claw (13b) for stopping lifting and a ratchet gear (14). When the driver is seated on the saddle, the urging force of the stroke spring (10) is cancelled by a load acting on the saddle, reducing the resistance, and this allows the engagement between the ratchet claw (13b) for stopping lifting and the ratchet gear (14) to be released by the switchover operation.
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