Thickness-adjustable air mattress structure

A thickness-adjustable elastic sponge, wherein a middle part of the thickness-adjustable elastic sponge along a thickness direction is provided with a plurality of first through-seams and a plurality of second through-seams;

• the plurality of first through-seams are spaced apart from each other and arranged in a first straight line along a length or width direction of the thickness-adjustable elastic sponge;
• the plurality of second through-seams are spaced apart from each other and arranged in a second straight line along the length or width direction of the thickness-adjustable elastic sponge;
• the plurality of first through-seams and the plurality of second through-seams run through two opposite sides of the thickness-adjustable elastic sponge along a direction vertical to an arrangement direction;
• and the plurality of first through-seams do not intersect with the plurality of second through-seams;
• a cross-section of each of the plurality of first through-seams is U-shaped, C-shaped, or V-shaped, and open downwards;
• a cross-section of each of the plurality of second through-seams is U-shaped, C-shaped, or V-shaped, and open upwards;
• two opening edges of each of the plurality of first through-seams extend respectively to positions inside or above openings of two adjacent second through-seams;
• the plurality of second through-seams are located below the plurality of first through-seams;
• and two opening edges of each of the plurality of second through-seams extend respectively to positions inside or below openings of two adjacent first through-seams, wherein at least a portion of each first through-seam of the plurality of first-through-seams is partially enveloped by a corresponding second through-seam of the plurality of second-through seam when the thickness-adjustable elastic sponge is deflated;
• and
• middle connecting parts rotatable up and down or compressible are formed between the plurality of first through-seams and the plurality of second through-seams, such that the plurality of first through-seams and the plurality of second through-seams are allowed to vertically expand to adjust a thickness of the thickness-adjustable elastic sponge, wherein the at least a portion of each first through-seam of the plurality of first-through-seams is above the corresponding second through-seam of the plurality of second-through seam when the thickness-adjustable elastic sponge is inflated.