| 摘要 |
PROBLEM TO BE SOLVED: To provide a disc brake device capable of improving braking feeling. SOLUTION: The disc brake device 1 is located on at least one side of a disc rotor and equipped with a caliper having a plurality of friction material pressing means (pistons) 22a to 22 I where the change of the braking force relative to the change of the pressing force presses a different plurality of friction materials and a plurality of friction materials, and a pressing force setting means 3 setting each pressing force to the plurality of friction material so as to be a target braking force. The pressing force setting means 3 sets each pressing force so that the ratio of the braking force by the friction material where the change of the braking force relative to the change of the pressing force is small, relative to the all braking force becomes larger thanthe braking force by the friction force where the change of the braking force relative to the change of the pressing force is large when the target braking force is decreased than the increased case or when the vehicle speed is low than the high case. COPYRIGHT: (C)2006,JPO&NCIPI
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