Abrégé

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.

Classes IPC  ?

• B62J 1/06 - Selles pouvant se déplacer par translation de haut en bas
• B62K 19/36 - Parties du cadre profilées pour recevoir d'autres parties ou accessoires du cycle pour la fixation des supports de selle, p. ex. de manière réglable durant la marche
• B62J 1/08 - Armatures des sellesAssemblages entre l'armature de selle et la tige de siègeTiges de sièges

Abrégé

According to the present invention, a fixed tube (1) is provided with a freely sliding raising/lowering rod (2), stroke springs (5b, 5c) that bias the raising/lowering rod (2) upward, and a lock mechanism (A) and a lock-switching means (B) that lock at a prescribed height. The lock mechanism (A) is provided with an interlocking member (20) having a plurality of interlocking recesses (20a), and a claw member (22) having claw hooks (22a) that engage with the recesses. The lock-switching means (B) separates the claw hooks (22a) from the interlocking recesses (20a). The claw hooks (22a) are pushed by a claw-switching member (24) in the direction of engaging with the interlocking recesses (20a).

Classes IPC  ?

• B62J 1/06 - Selles pouvant se déplacer par translation de haut en bas

Abrégé

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.

Classes IPC  ?

• B62J 1/06 - Selles pouvant se déplacer par translation de haut en bas

Abrégé

A bicycle transmission of an internally mounted type, the transmission having a simple structure and capable of being universally installed on various bicycles. A rotating claw body (1) is fitted on a main shaft (51). Main gears (2, 3, 4, 5) corresponding to the number of shifts are arranged side by side on the outer periphery of the rotating claw body (1). An auxiliary shaft (6) is placed in parallel with the main shaft, and auxiliary gears (7, 8, 9, 10) individually functioning in operative association with the main gears at a predetermined speed ratio are co-rotatably supported by the auxiliary shaft (6). Ratchet claws (15, 16, 17, 18) individually corresponding to the main gears are arranged on the rotating claw body (1). Ratchet teeth (19) with which the ratchet claws engage are formed on the inner peripheral side of the main gears. When a switchover member (20) for causing the ratchet claws to project from and retract into the outer peripheral surface of the rotating claw body (1) is operated, a ratchet claw (15, 16, 17, 18) is engaged with and disengaged from the ratchet teeth (19) to switchover between the main gears (2, 3, 4, 5) that transmit drive power via auxiliary gears (7, 8, 9, 10). In this way, the speed ratio of rotation of the input side and output side is changed to shift gears.

Classes IPC  ?

• B62M 11/16 - Transmissions caractérisées par l'engrènement de roues dentées ou le contact de roues à friction de rapport variable avec engrenages planétaires incorporés au moyeu de la roue porteuse ou adjacents au moyeu
• F16H 3/08 - Transmissions à engrenages pour transmettre un mouvement rotatif à rapport de vitesse variable ou pour inverser le mouvement rotatif sans engrenages à mouvement orbital exclusivement ou principalement à engrenages constamment en prise, pouvant être libérés de leurs arbres
• F16H 9/24 - Transmissions pour transmettre un mouvement rotatif à rapport de vitesse variable ou pour inverser un mouvement rotatif par des organes flexibles sans fin sans organes à mouvement orbital utilisant des chaînes, des courroies dentées, des courroies en forme de maillonsChaînes ou courroies spécialement adaptées à de telles transmissions