| 摘要 |
A rim structure of a bicycle, including a main body 1 having two annular sidewalls 11 - 12 and an annular rib 13 connected between the sidewalls. Outer ends of the sidewalls distal 11 - 12 from the circular center of the rim and the rib 13 together define a chucking groove 14 for chucking a tire 2 therein. The main body 1 is completely made of composite material. Multiple heat-radiating blocks 15 are inlaid in portions of the sidewalls in contact with the brake blocks 3 and arranged at intervals. The heat-radiating blocks 15 are made of high heat-radiation efficiency materials. The main body 1 and the heat-radiating block 15 have different frictional coefficients. The heat-radiating blocks are capable of quickly dissipating the heat generated due to friction between brake blocks 15 and the sidewalls 11 - 12 of the rim. In addition, due to the different frictional coefficients, an antilock/antiskid effect is achieved.
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