| 摘要 |
PURPOSE:To lighten the weight of vibration proof spring reduce a contact face of a ion plate with rubber and enable higher damping by arranging fiber cord layers on a rubber elastic substance in parallel to the surfaces of fixtures and in multiple. CONSTITUTION:At least two pieces of angular iron fixtures 1, 4 the horizontal cross section of which are formed in angular shape are arranged with the tops tending to the same side, rubber elastic substance 5 is fixedly laid therebetween and fiber cord layers 6 are arranged on the rubber elastic substance 5 in parallel to the surfaces of the angular fixtures 1, 4 and in multiple. In this way, the rigidity of the rubber elastic substance 5 corresponding to shearing force is equal to or smaller than that of a conventional rubber elastic substance which has no fiber cords 6 to increase the rate of damping to vertical vibration. Resistance to horizontal compressing force, or hardness, is greater than that of a rubber unit and almost equal to that in laying several iron plates therebetween, so that the usage of the angular fixtures in the middle positions can be reduced to proportionally make the rubber elastic substance lighter and the inertia force smaller and to allow more quickly damped vibration. |
