| 摘要 |
The invention concerns in particular an electrical assist device for a bicycle, said device comprising:
an electric machine (2) comprising a rotor,a drive pinion (3) driven by the rotor of the electric machine,fixing means (4) for fixing the electric machine to the bicycle (1) in the vicinity of a tyre (5) of a wheel (61; 62) of said bicycle,a source (7) of electrical energy for powering the electric machine,means (8) for controlling the electric machine, characterized in that the drive pinion includes teeth (31) intended to mesh tangentially with complementary teeth (51) fastened to said tyre (5). |
