| 摘要 |
PROBLEM TO BE SOLVED: To facilitate the manufacture of a core material, improve manufacturing precision and suppress vibration propagation between skeleton members by adhering the U-shaped cross sectional skeleton member through a buffering member to form the cylindrical core material in a sound insulation door. SOLUTION: A sound insulation door arranges a cylindrical core material 1 on the inside of a rectangular frame material 4 to extend surface materials 5, 5 on both the faces, and fills the inside with a sound absorption material 6 such as glass wool. The skeleton members 2, 2 of U-shaped cross sections comprising a central piece 21, both end pieces 22 and a joining pieces are opposed as the core material 1, and the joining pieces 23, 23 are adhered through a buffering member 3 to be formed into a cylinder shape. A double tape having comparative thickness forming an adhesion layer on both the faces of an elastic material is used as the buffering material 3. Thereby a rivet or a screw is not used for joining of the skeleton members 2, 2, joining working is facilitated, the manufacturing precision of the core material 1 is improved and the propagation of vibration between the skeleton members 2, 2 can be effectively suppressed by the buffering member 3.
|
