| 摘要 |
PROBLEM TO BE SOLVED: To materialize a damping action by a damping means as set beforehand by inhibiting the inflow of a hydraulic oil mixed with air bubbles into a lubrication gap between a vehicle body side tube and a wheel side tube.SOLUTION: A partition wall member 5 which demarcates a reservoir R is fitted to the upper end inner side of the wheel side tube 2. A piston upper chamber R1 is demarcated by a piston body 3 slidably stored in the wheel side tube. The partition wall member 5 comprises communication holes 5a allowing the reservoir R on the inside to communicate with the outside. The wheel side tube 2 comprises upper communication holes 2a communicating with the lubrication gap A demarcated between itself and the wheel side tube while adjacently facing the communication holes 5a formed in the partition wall member 5 and lower communication holes 2b which are positioned below the upper communication holes 2a and which allow the lubrication gap A to communicate with the piston upper chamber R1. A check valve C is installed in the lubrication gap A between the upper communication holes 2a and the lower communication holes than a laminated rubber base isolation, 2b. The check valve C allows the upper part and the lower part of the lubrication gap A to communicate with each other. |
