| 摘要 |
<p>PURPOSE:To prevent a drag without increasing the clearance in a screw part by making possible a relative rotation between a key brake and a push rod. CONSTITUTION:A favorably formed hole capable of rotating within a certain width is formed on. The middle part of a key plate 15 so that a push rod 8 may engagine with said hole can axially slide through the key plate 15. Thus, when deflections of pads 19, 19' and a caliper 1 begin to be rostored at the time of releasing hydraulic pressure and in a moment a push rod 8 is pressed on a sleeve 4, a key 15 and a push rod 8 relatively rotate, and the axial positions of the push rod 18 and the sleeve 4 are changed. At and this time, as the restoring displacement of the bads 19, 19' and caliper 1 can be absorbed, a drag can be prevented without increasing the clearance of a screw part.</p> |
