Dry-laid tile structure and laying method thereof

A dry-laid tile structure, wherein a tile comprises a tile body and a plastic frame, wherein the plastic frame is fixed on four side edges of the tile body and the plastic frame comprises a frame body, first connection assemblies, and second connection assemblies;

• the frame body is provided with a limit groove and an insertion groove in an extension direction, the first connection assemblies are fixed in the limit groove, the second connection assemblies are fixed on the frame body, and the first connection assemblies and the second connection assemblies on two opposite ones of the four side edges of the tile body are arranged in pairs to be spaced apart and staggered;
• first connection assembly protruding blocks are respectively provided on top sides of the first connection assemblies, the second connection assemblies respectively comprise extension portions and second connection assembly protruding blocks, the extension portions are fixed on the frame body, hook grooves are respectively provided on inner bottom sides of the extension portions, and the second connection assembly protruding blocks are respectively located at free ends of the extension portions;
• when two adjacent tiles are laid, the hook grooves on the extension portions of a first tile of the two adjacent tiles are respectively engaged with the first connection assembly protruding blocks on a second tile of the two adjacent tiles, and the second connection assembly protruding blocks on the extension portions of the first tile are inserted into the insertion groove on the second tile,
• wherein an insertion piece is provided at each of the free ends of the extension portions, the insertion piece has a wedge-shaped structure with a horizontal upper surface and an inclined lower surface, and the insertion groove provided on the frame body has an arc-shaped structure,
• wherein the second connection assembly rises upward and returns to an original state due to the arc-shaped surface of the insertion groove, and horizontal constraints are formed between the second connection assembly protruding block and the insertion groove between adjacent tiles,
• wherein the four side edges on a back side of the tile body are each provided with a profiled groove opening, the profiled groove opening comprises a plastic fastening groove, a plastic main structure groove, and an injection mold clamping step-shaped groove sequentially arranged from top to bottom, the plastic fastening groove has an end of an arc-shaped structure and is located in a middle of a respective one of the four side edges of the tile body, the injection mold clamping step-shaped groove extends to a bottom of the respective one of the four side edges of the tile body, and the plastic frame is integrated with the tile body by injection molding at the profiled groove opening.