公开(公告)号：EP1292781B1

公开(公告)日：2007-03-28

申请号：EP01934317.7

申请日：2001-05-23

申请人： HONDA GIKEN KOGYO KABUSHIKI KAISHA

发明人： KOIZUMI, Takashi Motorcycle Prod. Planning Office ,  ECHIGO, Takaharu, Honda Engineering Co., Ltd. ,  SHOJI, Hiroto, Honda Engineering Co., Ltd. ,  NAKAO, Yasuhiro, Honda Engineering Co., Ltd. ,  SUGAYA, Kunitoshi, Honda Engineering Co., Ltd.

IPC分类号： F16D65/10 ,  F16D69/04

CPC分类号： F16D65/10 ,  B22F2998/10 ,  C22C1/1036 ,  C22C2001/1057 ,  F16D65/12 ,  F16D69/0416 ,  F16D2065/132 ,  F16D2065/1356 ,  F16D2069/0441 ,  F16D2069/0483 ,  F16D2200/003 ,  F16D2200/0039 ,  F16D2200/006 ,  F16D2250/00 ,  F16D2250/0007 ,  F16D2250/0015 ,  F16D2250/0092 ,  B21C23/08

摘要： A brake drum includes a ring-shaped drum body (13), and a friction member (16) secured to the inner circumferential surface (18) of the drum body. Because the drum body is formed of a lightweight A1 alloy and the friction member is formed of an A1-base composite material, the brake drum can be reduced in weight as a whole. Further, because the friction member, having projecting portions (17a) formed on its outer periphery (17), is cast-enveloped by molten metal of the A1 alloy, the friction member and the drum body can be firmly fastened together. Thus, even when a great braking force is applied to the drum brake, the friction member can be prevented from being undesirably detached from the drum body.