| 摘要 |
A bicycle pedal crank has an elongated body and a first end portion with a first seat for coupling with a bottom bracket of the bicycle, a second end portion with a second seat for coupling with a pedal, and an intermediate portion extending between the first end portion and said second end portion and having an inner portion substantially without structural strength and a first reinforcement structure. The first reinforcement structure has a tubular structure arranged around said inner portion and extending longitudinally not longer than the longitudinal extension of the intermediate portion. The extension of the tubular element is limited to the intermediate portion of the pedal crank. The crank may be manufactured in a simple, quick way in a completely automated manner, using a filling material molded under high pressure.
|
