| 摘要 |
PROBLEM TO BE SOLVED: To change a spring constant without changing the stroke of an air spring by disposing an incompressible filling member for changing the spring constant, inside an air chamber, at a part not disturbing the expansion of a bellows. SOLUTION: A spring constant can be changed by changing the internal capacity of an air spring without changing the stroke of the air spring. In order to change the internal capacity of the air spring, that is, the capacity of an air chamber 28, an incompressible filler 7 formed of cylindrical pressure- tight foaming resin material, aluminium, or the like is fitted into an inner cylinder 14 and connected onto a damper support wall 9 by an adhesive or the like. A clearance between a cylindrical part 9a of the damper support wall 9 and a cylindrical body 8 of a damper 15 is sealed by a sealing member 10. Even in case of changing setting of the damper 15, the spring constant of the air spring is changed only by changing the capacity of the incompressible filling member 7, so that setting can be performed at a low cost. |
