| 摘要 |
PURPOSE:To reduce the low frequency vibration in particular by placing a membrane at the surrounding inside between the lower side of a surface material and the upper side of a lower material, and furnishing an enclosed air layer surrounded by the surface material, the membrane, and the lower material, in an antivibration floor to reduce the floor shock sound. CONSTITUTION:Between the surrounding insides 1b and 2b at the lower side 1a of a surface material 1 and at the upper side 2a of a lower material 2, both of which consist of a material of a wooden high polymer or the like, of several to ten-odd mm thick consisting of rubber, sponge, or the like, is placed, and an enclosed air layer 4 is formed therein. As a result, when a heavy good such as a piano is loaded on a body 5 through this antivibration floor, the shock inflicted to the surface material 1 is vibration-insulated by the air layer 4, being held by the membrane 3 and the air layer 4, and the vibration is hardly delivered to the lower material 2. And at the same time, the vibration can be absorbed resonantly. In such a way, the floor shock sound can be reduced, and especially, the low frequency vibration which determines the sound shielding level can be decreased. |
