| 摘要 |
The invention relates to a bicycle driving device and it is an improvement of the invention RO 109928 According to the invention, the bicycle driving device is provided with a pedal-support (7) which rotates on a pedal support shaft (4) to which a cilindrical toothed wheel (8) is secured, said toothed wheel being engaged with another cylindrical toothed wheel (9) secured to the shaft (10) located on the pedal arm (2) by means of a bearing (11) and makes one piece with a cylindrical toothed wheel (12) This wheel transmits the rotational movement, by means of the chain (13) to another toothed wheel (14) fixed on a shaft (1) by means of a bearing (15) and reinforced to the bicycle frame (16) by means of the reinforcing support (17)
|
