| 摘要 |
A device for contactless current generation, in particular bicycle dynamo, on a rotatable counter element, in particular wheel rim, with at least one movably mounted rotor element (2) having at least one magnet (3), and at least one coil (7), in the at least one winding of which a current can be induced by the magnet (3), which moves together with the rotor element (2), said current being usable to operate a consumer, wherein the rotor element (2) is movable by magnetic interaction with the counter element (1), characterized in that the rotor element (2) and the counter element (1) have different axial profiles, and, in an operative position, the rotor element (2) is designed to generate at least one magnetic field (6a, 6b) on the basis of an eddy current in the conductive counter element (1), which forms an uninterrupted circular path, in such a manner that, by means of continuous relative movement between the counter element (2) and rotor element (1), eddy current fields which are continuously opposed to one another and have oppositely polled magnetic fields (6a, 6b) to one another are induced in the counter element and the rotor element (2) is thus moved together with the counter element (1) with an eddy current gearing being formed. Furthermore, the invention relates to a vehicle lighting system and to a bicycle, each with a corresponding device for current generation. |
