| 摘要 |
<P>PROBLEM TO BE SOLVED: To make it possible to manufacture a cylinder device with a boost mechanism in smaller size. <P>SOLUTION: An output rod (2) is inserted into a housing (1) to be vertically movable. A first piston (21) inserted into the upper part of the housing (1) is affixed to the output rod (2), and a second piston (22) inserted into the lower part of the housing (1) is fitted onto the output rod (2) to be vertically movable. A lock chamber (25) is disposed between the first piston (21) and the second piston (22), and a first release chamber (31) and a second release chamber (32) are disposed on the upper side of the first piston (21) and on the lower side of the second piston (22), respectively. When a pressure fluid is supplied to the lock chamber (25) in a step for driving locking of the output rod (2), first the upwardly driven first piston (21) drives the output rod (2) upward, and then the downwardly driven second piston (22) boost-drives the output rod (2) upward by means of a boost mechanism (36). <P>COPYRIGHT: (C)2012,JPO&INPIT |
