| 摘要 |
PROBLEM TO BE SOLVED: To rapidly control the rise of the internal pressure in a cylinder at the upper limit position of a tilt-up by providing a free piston in a power tilt cylinder device. SOLUTION: In a power tilt cylinder device 100, in the upper limit condition where the pressurized fluid is fed to a counter piston side chamber 22B of a free piston 25, and the pressurized fluid is discharged from a first chamber 21, an operation valve 62 is pushed by a rod guide 18A and opened, and a glow passage 64 from the counter piston side chamber 22B of the free piston 25 toward the first chamber 21 is communicated through a check valve 61 and the operation valve 62. |
