| 摘要 |
A bicycle disc brake hub is provided with a brake rotor attachment portion having an external surface with an external spline section and an annular internal surface with internal threads, and a locking ring having a center tubular section with external threads and an abutment flange extending outwardly from the center tubular section to form an axially facing retaining surface. The external threads of the center tubular section mates with the internal threads of the brake rotor attachment portion to secure a rotor mounting boss and a brake rotor thereto. In one embodiment, the brake rotor is held between the locking ring and the rotor mounting boss, while in a another embodiment, the brake rotor is riveted to the rotor mounting boss.
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