| 摘要 |
The present invention provide a skeleton unit used to mount plural mosaic plates, comprising: a main body section, which is integrally formed by plural strip pieces perpendicularly crossing to each other and presents a grille shape, including plural grids with size and shape corresponding to the mosaic cover plates; and an extension section, which extends out from four edges of the main body section and is integrally formed with the main body section, including: plural prolongation pieces which respectively extend out from both ends of each the strip piece, and plural parallel strips which connect with the outside ends of each the prolongation piece on the same side and are in parallel with the edges of the main body section respectively, wherein the length of the parallel strip is equal to the length of the strip piece, the height of the parallel strip is less than half the height of the strip piece, in the extension section, two adjacent parallel strips are in alignment with the bottom surface of the main body section, and the top parts of the other two adjacent parallel strips are fixed at the positions close to the top surface of the main body section, the parallel strip is provided with plural lap joint hole portions, which penetrates the parallel strips and are used to overlap another the skeleton unit, the sum of double the length of the prolongation piece and the width of the parallel strip is equal to the length of the grid. |
