[Problem] Impart momentum to the rotation of the wheel to reduce the effort required for pedaling in addition to reducing the weight and cost of bicycles. [Solution] A rotation assistance mechanism equipped with: a variable magnetic unit 210 having a pair of magnetic members 215, 213 for which the opposite poles of the members are arranged facing one another; a magnetic drive unit 220 that changes the distance between the pair of magnetic members 215 and 213 with a predetermined period by means of the rotation of a rear wheel 13; a shield unit 230 having a pair of magnetic surfaces 234 the poles of which are the same as the pair of magnetic members 215 and 213; a shield drive unit 240 that advances the shield unit 230 to between the pair of magnetic members 215 and 213 in predetermined cycles when the distance between the pair of magnetic members 215 and 213 is contracted, and retracts the shield unit 230 from between the pair of magnetic members 215 and 213 in predetermined cycles when the distance between the pair of magnetic members 215 and 213 is expanded.
ROTATION ASSISTANCE MECHANISM
ROTATIONSUNTERSTÜTZUNGSMECHANISMUS
MÉCANISME D'ASSISTANCE À LA ROTATION
2018-04-18
Patent
Elektronische Ressource
Englisch