| 摘要 |
<p>PROBLEM TO BE SOLVED: To prevent a closing member from being unscrewed, and stably retain the sealed properties of a hydraulic chamber, by threadably arranging the closing member in a machining hole for penetratingly forming a cylinder hole, and forming on the closing member, an engaging part with which a threadably moving tool is only engaged in a threadably engaging direction. SOLUTION: In cylinder holes 6, 7, a machining hole 11 whose diameter is smaller than the cylinder hole 6 is opened from the anti-disc rotor side of one operating part 3, and the cylinder hole 6 of one operating part 3 is penetratingly formed from this machining hole 22 by an excavating tool. The bottomed cylinder hole 7 is formed in the other operating part 4 by utilizing this cylinder hole 6, and a closing member 12 is threadably engaged with the machining hole 11, so that the bottom of the cylinder hole 6 is closed. Engaging parts 12e are so formed that a closing member screwing tool is engaged with a threadably engaging direction only. This caliper body is thusly formed, thereby the closing member 12 can not be threadably moved carelessly after threadably engaged with the machining hole 11 in a job site, and also a metal seal part 12c is liquid-tightly closed, therefore the sealed properties of a hydraulic chamber 14 can be stably retained for a long time.</p> |
