| 摘要 |
PURPOSE:To improve running performance and running confortableness by variably controlling the resonance frequency of a resonance value. CONSTITUTION:A resonance value 12 is mounted in the middle of ports 11A, 11B for connecting upper and lower oil chambers 4, 5 formed in a cylinder by a piston 2. The resonance valve 12 is retained at a neutral position through non- linear neutral springs 14 mounted on and under a resonance spool 13, and a spring bearing 16 for the neutral spring 14 is coupled to an operation rod 17 piercing a piston rod 3 and axially slidig, so that the resonance frequency of the resonance valve 12 is changed depending upon the stroke position of the operation rod 17. |
