| 摘要 |
PURPOSE:To stably deform an impaction support part with a great displacement amount by a method in which the thickness of the impaction support part consisting of a hollow tapered cylinder is gradually made larger from the fitting side to the impaction receiving side, and grooves are provided in given places on the periphery of the impaction support part. CONSTITUTION:A fender device 1 made of a rubbery elastic material consists of an impaction receiver 2, a fitting part 3 and an impaction support part erectly provided in an inwardly inclined form toward the impaction receiver 2 from the fitting part 3. The impaction support part 4 is made of a hollow tapered cylinder, and its thickness is gradually made larger from the fitting part 3 side to the impaction receiver 2 side. An upper groove 6 is formed on the impaction receiver 2 side of the periphery of the impaction support part 2, a lower groove 7 is formed on the fitting part 3 side, and any one or both of the inner and outer faces of the impaction support part 4 are shaped into a polygonal conical form. The deformation of the impaction support part 4 can be stably obtained with a large displacement amount. |
