Patent ID: 8267228
Filing Date: 2012-09-18
Classification: F16D

Abstract:
1. A brake disc having a corrugated outer periphery comprising a hub disc fixed to a wheel, a braking disc coaxially disposed outside the hub disc, and a connection pin connecting the hub disc and the braking disc with each other in a floating state, in which a plurality of outer peripheral recesses are formed in an outer periphery of the braking disc at a distance from one another in a circumferential direction to form the outer periphery into a corrugated shape, wherein depths of the outer peripheral recesses from an outer peripheral circle of the braking disc are set to 2 mm or more and 7 mm or less, wherein the number of outer peripheral recesses, the number of mounting holes to the wheel and the number of connection pins are set to a relation of relatively prime, wherein the number of outer peripheral recesses is set to 3 to 23, the number of mounting holes to the wheel is set to 3 to 7 and the number of connection pins is set to 5 to 12.