| 摘要 |
<p>A disc brake system (10) comprises a disc (12, 14), and a hub (16) which is arranged to rotate about an axis (18) thereof. The hub (16) comprises a mounting portion (16d) which is generally in the shape of a hollow cylinder. The system (10) also comprises mounting means (20, 22) by which the disc (12, 14) is mounted on the external surface of said mounting portion (16d) for rotation with said hub (16) as a unit about said axis (18) and the disc (12, 14) can perform axial sliding movement on said hub. Said hub (16) carries vanes (62) arranged so that, during rotation of the hub (16) about said axis (18), the vanes act to force air into the interior of said mounting portion (16d). Said mounting portion (16d) has openings (60) therethrough arranged so that air forced into the interior of the mounting portion (16d) passes through said openings and flows over said disc (12, 14).</p> |
