| 摘要 |
<p>PURPOSE:To eliminate uneconomical necessity for mounting a limit switch or the like, by providing a valve structure, pressed in one direction by a spring, in a partitioning block and inserting the rod of a booster piston into the valve structure. CONSTITUTION:A valve structure 8, pressed in one direction by a spring 9, is slidably provided in a partitioning block 10 placed between the first and the second cylinder 1, 2 and the third cylinder 3. And a rod 7 in a booster piston 5 is inserted into the valve structure 8. In this way, uneconomical necessity for mounting a limit switch or the like can be eliminated because the limit switch for detecting the final process of a cylinder stroke comes to be unnecessary.</p> |
