| 摘要 |
PURPOSE:To decrease a manufacturing cost, by mounting a protrusive member in the variable position of its mounting by a bolt to a U-groove provided in the side of a piston opposite to a hydraulic cylinder. CONSTITUTION:A half moon shaped protrusive member 18, being inserted into a U-groove 4' provided in the side of a piston opposite to a hydraulic cylinder 4, is mounted in the variable mounting position of said member by a bolt 19, while a recessed part 20 fitted to the protrusive member 18 is formed in the end part of a shoe 5. In this way, even if the shoe 5 is inaccuratelt molded, a mounting position of the protrusive member 18 can be adjusted when it is assembled. Accordingly, a manufacturing cost is decreased by less severely requiring the accuracy of parts when they are manufactured. |
