【図面の簡単な説明】[Brief explanation of drawings]
図１は従来品のコンクリート製のＵ字溝の断面
図、１はふた、２は本体を示す。
図２は本考案による板状形成体を示し、３は空
間部（２重壁）、４は融着部（ヒンジ部）を示す
。
図３は本考案による凸部を内側にして折りこん
だＵ字溝例を示し、３−１はその板状形成体の断
面図で、４は融着部（ヒンジ部）、５は空間部、
６は左側壁、７は底壁、８は右側壁、９はふた部
を示す。３−２は組立て時の断面図、３−３は製
品のイラスト図である。
図４は本考案による凸部を外側にして折りこん
だＵ字溝例を示し、４−１はその板状形成体の断
面図、４は融着部（ヒンジ部）、１０は左側壁、
１１は底壁、１２は右側壁、１３はふた部を示す
。４−２は組立て時の断面図、４−３は製品イラ
スト図である。
図５は本考案による凸部を外側に折りこんだＵ
字溝で、かつ各部に補強リブを設けた例の断面図
、５−１はその板状形成体の断面図、１４は左側
壁、１５は底壁、１６は右側壁、１７はふた部を
示す。５−２は組立て時の断面図である。
図６は側壁に取手１８を設けた組立て時の断面
図、図７は部分的に補強リブを設けた組立て時の
断面図、図８は部分的に底部に水板孔１９を設け
た組立て時の断面図、図９は本体の過剰おりこみ
を防止する為の止め２０を設けた組立て時の断面
図、図１０、図１１は別途に設けた本体固定用み
ぞ、へこみ２１，２２、ふたを設けた組立て時の
断面図、図１２は本体と一体で成形された本体固
定へこみ２３、つぎふたを設けた組立て時の断面
図、図１３は本体にジヨイント用かん合しろを設
けた本体のジヨイントのイラスト図である。
Figure 1 is a sectional view of a conventional concrete U-shaped groove, with 1 showing the lid and 2 the main body. FIG. 2 shows a plate-shaped formed body according to the present invention, in which numeral 3 indicates a space (double wall) and numeral 4 indicates a fused portion (hinge portion). Fig. 3 shows an example of a U-shaped groove according to the present invention, which is folded in with the convex part inside, 3-1 is a cross-sectional view of the plate-shaped formed body, 4 is a fused part (hinge part), and 5 is a space part. ,
Reference numeral 6 indicates the left side wall, 7 indicates the bottom wall, 8 indicates the right side wall, and 9 indicates the lid. 3-2 is a sectional view when assembled, and 3-3 is an illustration of the product. FIG. 4 shows an example of a U-shaped groove according to the present invention which is folded in with the convex portion on the outside, 4-1 is a cross-sectional view of the plate-shaped formed body, 4 is a fused portion (hinge portion), 10 is a left side wall,
11 is a bottom wall, 12 is a right side wall, and 13 is a lid. 4-2 is a sectional view when assembled, and 4-3 is a product illustration. Figure 5 shows a U with the convex part folded outward according to the present invention.
5-1 is a cross-sectional view of the plate-shaped formed body, 14 is the left side wall, 15 is the bottom wall, 16 is the right side wall, and 17 is the lid. . 5-2 is a sectional view when assembled. Figure 6 is an assembled cross-sectional view with a handle 18 provided on the side wall, Figure 7 is an assembled cross-sectional view with reinforcing ribs partially provided, and Figure 8 is an assembled cross-sectional view with a water plate hole 19 partially provided on the bottom. Figure 9 is a cross-sectional view of the assembly with a stopper 20 to prevent the body from sliding in excessively, Figures 10 and 11 are grooves for fixing the body, recesses 21 and 22, and a lid separately provided. Figure 12 is a cross-sectional view of the main body when assembled, with the body fixing recess 23 molded integrally with the main body, and a spout lid, and Figure 13 is a cross-sectional view of the main body with a joint mating allowance provided on the main body. It is an illustration diagram.