| 摘要 |
PROBLEM TO BE SOLVED: To provide a mattress structure capable of reducing a work burden while securing installation stability, and capable of improving strength of a bottom wall part. SOLUTION: A well curb-like wooden frame wall 4 is formed by alternately crossing work logs 10 over a plurality of layers, and the bottom wall part is formed in a lower part of the wooden frame wall 4. A wire net 2 is used as this bottom wall part, and the wire net 2 is fixed to an under surface of the wooden frame wall 4. Thus, a property of the wire net 2 excellent in strength and durability is used in the bottom wall part, a load of an infilling material 3 is received by an execution surface 7 contacting with the wire net 2, and strength and durability of the bottom wall part are improved. The wire net 2 is easily held by the under surface of the wooden frame wall 4 by using meshes of the wire net 2. While, the wire net 2 covers along the execution surface by using flexibility of the wire net 2, and the installation stability is secured.
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