| 摘要 |
PROBLEM TO BE SOLVED: To provide a soundproof floor structure that requires a minimum cost increase with few design changes on the floor frame, can be easily installed, and reduces the heavy floor weight floor impact sounds of LH-55, by absorbing/easing the exciting force of the floor impact source. SOLUTION: The soundproof floor structure 1, an example of this invention, equips a backer panel 2, which is a sub-floor of the finished floor, and floor board 3 that supports the backer panel. In this soundproof floor structure, a plurality of soundproof flooring materials 4 are arranged between the backer panel 2 and the floor board 3. Each soundproof flooring material 4 is separately arranged, keeping a spacing 5. Moreover, each soundproof flooring material 4 is provided with the bottom plate 6, impact absorbing materials 7a, 7b and the top plate 8. The bottom plate 6 is fixed onto the floor board 3 by screws 9, and the top plate 8 is fixed under the backer panel 2 by screws 10. The impact absorbing materials 7a and 7b are arranged between the bottom plate 6 and the top plate 8. Vertical maximum peak displacement of the backer panel 2 of this soundproof structure 1 based on bang machine impact stipulated in JIS-A-1418 is 10 mm or smaller. A finished floor 11 is formed above this soundproof structure 1.
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