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DOWNPIPE STRUCTURE
To provide a downpipe structure in which the malfunction hardly occurs when a downpipe is thermally expanded/shrunk, and which can suppress the damage on the downpipe at the earthquake.SOLUTION: A downpipe structure 1 includes an upper downpipe, a lower downpipe 4 and an intermediate gutter 5. The intermediate gutter 5 includes an upper cylindrical part 10 and a lower cylindrical part 11. The upper cylindrical part 10 includes an upper large cylindrical part 12 to which the upper downpipe is communicatively connected in a manner being slidable in the vertical direction and an upper small cylindrical part 13. The lower cylindrical part 11 includes a lower large cylindrical part 14 and a lower small cylindrical part 15 which is communicatively connected to the lower downpipe 4. When the vertical length of the upper small cylindrical part 13 is defined as B1, the external dimension of the upper small cylindrical part 13 is defined as d1, the internal dimension of the upper end part of the lower large cylindrical part 14 is defined as D1, the radial thickness of the upper end part of the lower large cylindrical part 14 is defined as t1, the vertical length of the lower small cylindrical part 15 is defined as B2, the external dimension of the lower small cylindrical part 15 is defined as d2, the internal dimension of the upper end part of the lower downpipe 4 is defined as D2 and the radial thickness of the upper end part of the lower downpipe 4 is defined as t2, B1≤(1+t1/D1)(D1-d1), B2≤(1+t2/D2)(D2-d2).SELECTED DRAWING: Figure 3
【課題】縦樋が熱伸縮した際に不具合が生じにくく、地震の際に縦樋の破損を抑制することができる縦樋構造を提供する。【解決手段】縦樋構造1は、上縦樋と下縦樋4と中間樋5を備える。中間樋5は、上筒部10と下筒部11を含む。上筒部10は、上縦樋が上下方向にスライド可能に連通接続される上大筒部12と、上小筒部13を有する。下筒部11は、下大筒部14と、下縦樋4に連通接続される下小筒部15を有する。上小筒部13の上下長さをB1、上小筒部13の外寸をd1、下大筒部14の上端部の内寸をD1、下大筒部14の上端部の肉厚をt1、下小筒部15の上下長さをB2、下小筒部15の外寸をd2、下縦樋4の上端部の内寸をD2、下縦樋4の上端部の肉厚をt2としたときに、B1≦(1+t1/D1)(D12−d12)1/2、B2≦(1+t2/D2)(D22−d22)1/2の関係にある。【選択図】図3
DOWNPIPE STRUCTURE
To provide a downpipe structure in which the malfunction hardly occurs when a downpipe is thermally expanded/shrunk, and which can suppress the damage on the downpipe at the earthquake.SOLUTION: A downpipe structure 1 includes an upper downpipe, a lower downpipe 4 and an intermediate gutter 5. The intermediate gutter 5 includes an upper cylindrical part 10 and a lower cylindrical part 11. The upper cylindrical part 10 includes an upper large cylindrical part 12 to which the upper downpipe is communicatively connected in a manner being slidable in the vertical direction and an upper small cylindrical part 13. The lower cylindrical part 11 includes a lower large cylindrical part 14 and a lower small cylindrical part 15 which is communicatively connected to the lower downpipe 4. When the vertical length of the upper small cylindrical part 13 is defined as B1, the external dimension of the upper small cylindrical part 13 is defined as d1, the internal dimension of the upper end part of the lower large cylindrical part 14 is defined as D1, the radial thickness of the upper end part of the lower large cylindrical part 14 is defined as t1, the vertical length of the lower small cylindrical part 15 is defined as B2, the external dimension of the lower small cylindrical part 15 is defined as d2, the internal dimension of the upper end part of the lower downpipe 4 is defined as D2 and the radial thickness of the upper end part of the lower downpipe 4 is defined as t2, B1≤(1+t1/D1)(D1-d1), B2≤(1+t2/D2)(D2-d2).SELECTED DRAWING: Figure 3
【課題】縦樋が熱伸縮した際に不具合が生じにくく、地震の際に縦樋の破損を抑制することができる縦樋構造を提供する。【解決手段】縦樋構造1は、上縦樋と下縦樋4と中間樋5を備える。中間樋5は、上筒部10と下筒部11を含む。上筒部10は、上縦樋が上下方向にスライド可能に連通接続される上大筒部12と、上小筒部13を有する。下筒部11は、下大筒部14と、下縦樋4に連通接続される下小筒部15を有する。上小筒部13の上下長さをB1、上小筒部13の外寸をd1、下大筒部14の上端部の内寸をD1、下大筒部14の上端部の肉厚をt1、下小筒部15の上下長さをB2、下小筒部15の外寸をd2、下縦樋4の上端部の内寸をD2、下縦樋4の上端部の肉厚をt2としたときに、B1≦(1+t1/D1)(D12−d12)1/2、B2≦(1+t2/D2)(D22−d22)1/2の関係にある。【選択図】図3
DOWNPIPE STRUCTURE
縦樋構造
MATSUMOTO KOJI (author) / NISHII YASUMASA (author)
2018-11-01
Patent
Electronic Resource
Japanese
IPC:
E04D
ROOF COVERINGS
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Dacheindeckungen