| 摘要 |
<p>A ventilated-type disc rotor free from thermal deformation at the time of braking operation, generation of cracks and the phenomenon of brake jadder is provided. An inner end (14) of a rib (13) continuously connecting an external disc (11) and an internal disc (12) extends radially and inwardly beyond the inner peripheral surfaces (15, 16) of the discs (11, 12) and continuously connected to a cylindrical member (19) which is by turn connected to a flange to be fitted to a body of a vehicle, and a gap (21) is formed between the inner peripheral surface (15) of the external disc (11) and an outer peripheral surface (20) of the cylindrical member (19). <IMAGE></p> |
