| 摘要 |
PURPOSE: A brake apparatus for vehicles is provided to suppress a bubble in a working fluid while making the movement of the working fluid smooth. CONSTITUTION: A vehicle breaking system includes a main body(10), a piston(30), a fixed axis(70), a pressing member(50), and a movable part. The main body comprises a caliper(12) and a hydraulic chamber(14) defining a pad. The piston is installed in the hydraulic chamber and is movable to pressure the pad. The fixed axis is installed in the hydraulic chamber. The pressing member is installed in the fixed axis and presses the piston to the pad. A moving part has a moving member which is movable between the fixed axis and the pressing member. A moving part includes an exposing groove which is arranged in the fixed axis and the pressing member.
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