| 摘要 |
To realize the reduction of weight and the miniaturization of the mounting structure of a speed reduction device and a brake device. In a vehicle in which a speed reduction device which decreases a rotational speed of a drive wheel is mounted on a vehicle body frame, a brake caliper which applies braking to the rotation of a brake disc mounted on a drive axle is mounted on a casing which constitutes the speed reduction device, and a piston which applies braking to the brake disc by clamping the brake disc is provided to the brak e caliper, an axis of the piston, axes, of bolts, as a mounting portion of the brake caliper on the casing, an axis of a bolt as a mounting portion of the casing to the vehicle body frame are arranged on one straight line, and the direction of a braking force which acts on the piston agrees with or is arranged parallel t o the direction that the straight line extends.
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