| 摘要 |
PURPOSE: A brake disk is provided to prevent the crack or breakage of the connection between a brake disk fixing part and a disk part. CONSTITUTION: A brake disk of a rolling stock fixed on a hub mounted on an axle is for decelerating or stopping a car. A fixing part has a flange fixed in the hub parallel to a shaft and a connecting part. A disk part includes a brake press part integrated with the fixing part and ribs(28,30,32) formed between brake press parts. A reinforcing rib is formed at the intersection of the connecting part and the brake press part. One end of the rib is extended to the connecting part. One part of the connecting part is integrated with a reinforcing thickness part(34). According to the reinforced connecting part, crack or breakage is prevented.
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