| 摘要 |
PROBLEM TO BE SOLVED: To solve a problem of lowering of braking force when braking plates are heated exceeding a predetermined temperature, due to brake pads brought into press-contact with the braking plates at the time of braking to heat the braking plates, in a disc brake device for a vehicle. SOLUTION: An air hole 53 is formed to a connecting ring portion 52 of the brake disc 4, and a passage 62 for cooling air 61 is constituted of the air hole 53 and a radiating passage 40 between braking plates 37, 38. Since a radially outer position of the air hole 53 is inclined to an axial center 10 with respect to a radial direction in a radial face based on a radially inner position, the cooling air 61 is easily conducted from a radially outside to a radially inside of the connecting ring portion 52 at a time of rotating the brake disc 4. Therefore, the cooling air 61 sufficiently cools the braking plates 37, 38 heated at the time of braking to suppress lowering of braking performance compared with the conventional disc brake. COPYRIGHT: (C)2003,JPO
|
