| 摘要 |
PROBLEM TO BE SOLVED: To previously prevent damage to a boss bearing surface liable to be developed in the course of transporting a single caliper by forming projects, a surface as forged, for providing the mounting posture of a pressure tight hose and by appropriately establishing the arrangement of the projects and to contrive casting mold sharing by symmetrically placing the projects for mounting on the right and the left wheel of a vehicle. SOLUTION: A female screw is provided in a hydraulic fluid introducing hole communicated with the cylinder part 1a of a caliper 1. A cylindrical union is integrated with a pressure tight hose connected to a separately prepared oil hydraulics generating source. The cylindrical union is screwed with the female screw, using a union bolt. Thus, a hydraulic fluid introducing part structure is fixed to the boss bearing surface 2 of the hydraulic fluid introducing hole. Where, a plurality of projects 3, 4 for positioning the pressure tight hose are formed. The pressure tight hose-facing abutting surfaces 3a, 4a of the pair of projects are alternately placed.
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