| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a disk brake in which the braking effective radius of a disk rotor is large, and by which effective braking can be obtained. SOLUTION: The disk part 24 of a wheel 22 is fixed to an axle hub 16, and a disk rotor 32 that is extended toward the inside in the radial direction is provided to the inner circumfential surface of the rim part 26. A caliper 42 is fitted to a bearing box 10 so as to be movable and also in such a state that it bestrides the disk rotor 32 and friction pads 38, 40 from the inner circumferential side. The caliper 42 includes a reaction member 56 that is turnable in the state that the fixing by means of a cylinder member 54 and screws 84 has been released. The braking effective radius of the disk rotor 32 can be increased as much as the caliper 42 is provided to the inner circumferential side so that a greater braking torque can be obtained. The disk rotor 32 is removed by releaving both the fixing of the wheel 22 to the axle hub 16 and the fixing of the reaction member 56 to the cylinder member 54, by moving the wheel 22 to the outside of the wheel, and by turning the reaction member 56. The disk rotor and the wheel may be separately made and then fixed together.</p> |
