Abstract: A bicycle saddle raising device includes a fixed tube carrying a slidable rising rod, stroke springs biasing the rising rod upward, a locking mechanism for locking the rising rod at a predetermined height, and a locking/unlocking switching arrangement. The locking mechanism includes an engaging member having a plurality of engaging recesses, and claw members having claws which engage the engaging member. The locking/unlocking switching arrangement disengages the claws from the engaging recesses. A claw state switching member presses the claws in a direction in which they engage the engaging recesses.

Abstract: A bicycle saddle lifter is provided which is safe and simple in structure and which can raise the saddle of a bicycle while a bicycle driver is sitting on the saddle. The biasing force of a stroke spring 10 which biases the saddle upwardly is determined such that when the weight of a bicycle driver directly acts on the saddle, the saddle lowers, and when the driver applies force to pedals of the bicycle while sitting on the saddle, and the load on the saddle decreases, the saddle rises. While the driver is not sitting on the saddle, resistance resulting from the biasing force of the stroke spring prevents a ratchet pawl 13b for checking the ascent of the saddle from being disengaged from the corresponding ratchet gear 14 even by switchover operation.