| 摘要 |
PROBLEM TO BE SOLVED: To provide a high sound insulation stairs capable of suppressing noise generation as much as possible during use and effectively blocking transmission of vibration to outside of stair case.SOLUTION: A high sound insulation stairs is structured by fixing side plates 5 to a right and a left parting walls 1, respectively, which face to each other in a stair case, and supporting the right and left end parts of a tread by the side plates 5 on the right and left sides. A vibration-proofing material 6 made of an elastic material is disposed between the side plate 5 and the parting wall 1, and the side plate 5 is fixed to the parting wall 1. The vibration-proofing material made of the elastic material is disposed between a horizontal part of the side plate 5 and the end part of the tread, and the tread is fixed on the horizontal part of the side plate 5 in a state where a clearance is formed between both end parts of the tread and the parting wall 1. A riser is fixed to a vertical part of the side plate 5 in a state where a clearance is formed between both end faces of the riser and the parting wall 1.SELECTED DRAWING: Figure 2 |
