| 摘要 |
A brake disk includes a body (1) and at least two heat dissipation members (2). The body has an annular portion defined thereon, and the annular portion of the body defines a central axis. The annular portion has a brake portion (11) for a bike brake device to clamp the brake portion. The body has at least one assembling portion (12) extended toward the central axis for connecting with a bike hub. At least one connecting portion (13) is formed between the assembling portion and the brake portion. The connecting portion has at least one first fixing portion formed thereon. The two heat dissipation members are respectively located on two corresponding lateral sides of the body. Each heat dissipation member has at least one second fixing portion, the second fixing portion is fixedly assembled to the first fixing portion. |
