Pedalling method and device

B - Operations – Transporting – 62 – M

Patent

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Details

B62M 3/04 (2006.01) B62M 1/02 (2006.01)

Patent

CA 2622958

The invention concerns a pedalling method and device in particular adapted for a user in standing position. In one embodiment, the device comprises a drive shaft (2) whereof the rotation about its axis is coupled with the rotation of two right (10) and left (60) pedals. The pedals are mutually assembled via a plurality of cranks (3, 53, 11, 61), connecting rods (7, 57), and pivots (6, 8, 14, 56, 58, 64) such that: the pedals can travel freely along a circular path, for a constant rotational speed of the shaft, the speeds of the pedals are recurrent at equal time intervals but out of phase, minimal at lower dead center, maximal at upper dead center, and when the pedals are simultaneously at a common height lower than that of the center of the trajectory, the speeds of the pedals are equal. The vertical oscillation of the center of gravity of a user in standing position is reduced compared to a conventional pedal assembly.

L'invention concerne un procédé et dispositif de pédalage notamment adaptés à une position debout d'un utilisateur. Dans un mode de réalisation, le dispositif comprend un arbre moteur (2) dont la rotation autour de son axe est couplée à la rotation de deux pédales droite (10) et gauche (60) . Les pédales sont couplées entre elles par un ensemble de manivelles (3, 53, 11, 61) , de bielles (7, 57) , et de pivots (6, 8, 14, 56, 58, 64) de sorte que: - les pédales sont libres d'avoir une trajectoire circulaire, - pour une vitesse de rotation constante de l'arbre, les vitesses des pédales sont périodiques de même période mais déphasées, minimales au point mort bas, maximales au point mort haut, et - lorsque les pédales sont simultanément à une même hauteur inférieure à celle du centre de la trajectoire, les vitesses des pédales sont égales. L'oscillation verticale du centre de gravité d'un utilisateur en position debout est réduite par rapport à un pédalier classique.

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