| 摘要 |
Arrangement for releasable fastening of an annular brake disc (2) to a rotatable brake disc carrier (4), such as a wheel hub, which supports a brake disc, whereby the brake disc's internal periphery is provided with driving protrusions (6) which are separated in the circumferential direction, face radially inwards towards the centre (C) of the disc and engage in a corresponding number of external axial grooves (8) between ridges (10) which run axially on the outside of the carrier (4). The extent of the driving protrusions (6) is smaller than the width of the grooves (8) in the circumferential direction of the carrier so that between adjacent sets of mutually engaging driving protrusions and grooves a spacing gap (12) may be formed to accommodate a spacing device (14) fastened removably therein which fits into and fills the spacing gap and hence fixes the brake disc (2) relative to the carrier (4). The spacing device (14) is provided at its axially opposite ends with shoulder portions (18, 20) which prevent mutual axial movement between the brake disc and the carrier.
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