Patent ID: 7845473

Claim:
A brake caliper structure of a straddle seat off-road vehicle including a wheel-in disc brake accommodated in a wheel and having a brake disc secured to a hub of the wheel for rotation therewith, a knuckle rotatably supporting the hub via a bearing, and an axle shaft secured to the hub for rotation therewith, the brake caliper structure comprising: a brake caliper including a fixed part mounted to the knuckle, a movable part, two connecting portions interconnecting the fixed part and the movable part so that the movable part is movable relative to the fixed part in a direction parallel to an axis of rotation of the wheel, a pair of friction pads for clamping the brake disc, and a piston movably disposed in the movable part for forcing the friction pads against the brake disc, wherein one of the connecting portions includes a guide hole formed in the fixed part and extending parallel to the axis of rotation of the wheel, a slide pin connected to the movable part and slidably received in the guide hole of the fixed part, and a metal sleeve press-fitted in the fixed part and having an axial hole forming the guide hole in which the slide pin is slidably received, and the other connecting portion includes a fixed pin secured to the fixed part and extending parallel to the axis of rotation of the wheel through a mount hole formed in the movable part, and an elastic member disposed between the movable part and the fixed pin, wherein the elastic member coaxially extends with the fixed pin through an entire length of the mount hole, a cylindrical portion of the elastic member extending through the entire length of the mount hole having a constant radial thickness, and the movable part is slidably and elastically mounted on the fixed pin via the elastic member disposed therebetween, the cylindrical portion effectively absorbing tilting of the disc brake so that the movable part can properly follow tilting of the disc brake.