| 摘要 |
A bicycle crank arm assembly is provided having at least one axle portion, a crank arm mounted on the at least one axle portion, the crank arm having a coupling seat and the axle portion a coupling portion coupled to the coupling seat, the coupling seat and the coupling portion being shaped so as to make a shape coupling to ensure that the crank arm can transmit a torque to the axle portion. Between the crank arm and the axle portion adhesive material is applied. The shape coupling ensures that the crank arm and the axle portion are integral in rotation, whereas the gluing ensures the sealing of the coupling area against corrosion phenomena. The gluing also ensures a predetermined minimum force limit necessary to disassemble the crank arm assembly. The crank arm assembly has a low overall weight, a simple assembly process, and a suitable resistance to disassembling. |
