| 摘要 |
PURPOSE:To absorb shocks in one and two-dimensional directions, by arranging a rigid air bubble unit of sintered alloys and elastic air bubble unit of sponges in a sealed housing, communicatively moving gas through a hole group in these units and absorbing the shocks. CONSTITUTION:A rigid air bubble unit 4 of sintered metal and the like is a disc body, side faces of which are formed to a semi-spherical shape, and arranged through a coil spring 6. While an elastic air bubble unit 5 of sponge and the like is filled in a space formed by coil springs 6a, 6b, the rigid air bubble unit 4 and bellows-shaped side surfaces of a casing 3. If a shock is applied in a compressive direction, existing gas in the elastic air bubble unit 5 is compressed, and its pressure becomes higher than pressure of existing gas in the rigid air bubble unit, not applied with compression, then the gases are communicatively moved by their pressure difference through a hole group, communicated respectively in each unit 4, 5 thus shock absorption can be performed. |
