【図面の簡単な説明】[Brief explanation of the drawing]
第１図円弧状の凸部２個付空胴コンクリートブ
ロツク斜視図。
１……空胴コンクリートブロツク、２……空胴
部、３……連結用溝、４……円弧状凸部。
第２図、四角形状の凸部付き空胴コンクリート
ブロツク斜視図。
１……空胴コンクリートブロツク、２……空胴
部、３……連結用溝、５……四角状凸部。
第３図、凸部形状、取り付け数、取りつけ間隔
、取付け場所を変えた場合の例断面形状概略説明
図。
イ……円弧状凸部１個付き、ロ……円弧状凸部
３個付き、ハ……円弧状凸部４個付き、ニ……四
角形状凸部ブロツク中程に１個付き、ホ……四角
形状凸部間隔をとつて表面に２個、背面に１個付
き、ヘ……四角形状凸部を間隔をとつて２個付き
、ト……表面長さの半分の大きさの円弧状凸部を
表と裏に付き、チ……三角形状凸部を２個付き、
リ……表と裏に四角形状の対称凸部をつけた概略
断面説明図。
第４図、円弧形凸部６４個付空胴コンクリート
ブロツク１を花壇の最上段に使つた花壇の例斜視
図。
７……土砂。
第５図、四角形状の凸部５を両面につけた空胴
コンクリートブロツク１を塀に使つた場合の例斜
視図。
FIG. 1 is a perspective view of a hollow concrete block with two arcuate convex portions. 1... Cavity concrete block, 2... Cavity part, 3... Connecting groove, 4... Arc-shaped convex part. FIG. 2 is a perspective view of a hollow concrete block with a rectangular convex portion. DESCRIPTION OF SYMBOLS 1... Cavity concrete block, 2... Cavity part, 3... Connection groove, 5... Square convex part. FIG. 3 is a schematic explanatory diagram of an example cross-sectional shape when the shape of the convex portion, the number of attachments, the attachment interval, and the attachment location are changed. A...With 1 arc-shaped protrusion, B...With 3 arc-shaped protrusions, C...With 4 arc-shaped protrusions, D...With 1 square-shaped protrusion in the middle of the block, H... ...Two square-shaped protrusions are placed on the front surface and one on the back surface, H...Two square-shaped protrusions are placed at intervals, G...A circular arc with a size half the surface length There are convex parts on the front and back, and there are two triangular convex parts.
R...A schematic cross-sectional explanatory diagram with square symmetrical convex portions on the front and back sides. FIG. 4 is a perspective view of an example of a flower bed in which the hollow concrete block 1 with 64 arc-shaped convex portions is used as the top layer of the flower bed. 7... Earth and sand. FIG. 5 is a perspective view of an example in which a hollow concrete block 1 with rectangular convex portions 5 on both sides is used as a fence.