| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To miniaturize a caliper body and reduce its weight while maintaining travel distance of a tip of a piston and enlarge layout property. <P>SOLUTION: This piston 11 is formed by a first cylindrical piston 11a whose both ends are opened and a second bottomed and cylindrical piston 11b. The first piston 11a is internally inserted into a cylinder hole 7 movably in a liquid-tight manner. The second piston 11b is internally inserted into the first piston 11a movably in a liquid-tight manner. The first piston 11a protrudes in the direction of disc rotor from the cylinder hole 7, and the second piston 11b protrudes in the direction of disc rotor from the first piston 11a. <P>COPYRIGHT: (C)2006,JPO&NCIPI</p> |
