| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a disc brake device for preventing generation of a hitting sound, by proper control corresponding to a collision speed to a torque receiving surface of a pad. <P>SOLUTION: This disc brake device has: a pair of friction members pressed to both side surfaces of a disc rotor rotating together with a wheel; a caliper having a pressing means for pressing the pair of friction members to both side surfaces of the disc rotor by pressing a back board for supporting the pair of friction members; and a holding part for holding both end parts of the back board, and also has a displacement detecting part for detecting a displacement quantity and the displacement direction of the pair of friction members caused by rotation of the disc rotor. The back board is formed so as to have a magnetic part for indicating a different magnetic pole in both end parts of the back board, and the holding part has a magnetic force control part for generating magnetic force so that one end of the back board is attracted to the holding part and the other end of the back board separates from the holding part in response to the displacement quantity and the displacement direction of the pair of friction members detected by the displacement detecting part. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
