A modular storage box, comprising a bottom plate and a side portion, wherein the bottom plate has a planar structure, and the side portion has a vertically through structure;
- an edge of the bottom plate is provided with an insertion groove having an upward opening;
- a side wall of the insertion groove protrudes from an upper surface of the bottom plate and is provided with a first wedge member;
- a spacing between a wedge surface of the first wedge member and the side wall of the insertion groove increases gradually from top to bottom;
- a flat surface of the first wedge member is perpendicular to the side wall of the insertion groove and connected to a lower part of the wedge surface of the first wedge member;
- a bottom surface of the side portion is provided with an insertion strip matching the insertion groove;
- at least one of a left end and a right end of the bottom surface of the side portion forms a projecting portion configured to establish a blocking relationship with an upper edge of the side wall of the insertion groove to prevent the side portion from further moving downward;
- a position of a side wall at a lower end of the insertion strip corresponding to the first wedge member is provided with a second wedge member;
- a spacing between a wedge surface of the second wedge member and the side wall at the lower end of the insertion strip increases gradually from bottom to top;
- a flat surface of the second wedge member is perpendicular to the side wall at the lower end of the insertion strip and connected to an upper part of the wedge surface of the second wedge member;
- when the insertion strip on the side portion is inserted into the insertion groove from the opening of the insertion groove in the bottom plate, the wedge surface of the second wedge member slides along the wedge surface of the first wedge member until the flat surface of the second wedge member is limited by the flat surface of the first wedge member;
- in addition, the projecting portion of the bottom surface of the side portion is blocked by the upper edge of the side wall of the insertion groove, such that the side portion and the bottom plate closely enclose to form an integrated box body;
- wherein the integrated box body has a rectangular structure, and the bottom plate is a rectangular plate;
- wherein the side portion comprises a front plate and a rear plate arranged symmetrically front and back, and a left plate and a right plate arranged symmetrically left and right;
- front and rear ends of the left plate and the right plate are each provided with a vertical groove having an opening, and left and right ends of the front plate and the rear plate are each provided with a vertical strip matching the vertical groove;
- and when all the vertical strips are inserted into the corresponding vertical grooves from the openings of the corresponding vertical grooves, the front plate, the left plate, the rear plate, and the right plate are sequentially connected and enclose to form the vertically through structure of the side portion, the vertically through structure being rectangular;
- the vertical strip comprises an integrally formed strip-shaped connecting portion, and strip-shaped left strip portion and right strip portion;
- the connecting portion is connected to the corresponding front plate;
- the left strip portion and the right strip portion are respectively located on a left side and a right side of the connecting portion;
- a cross section of the vertical strip is in a T shape with a vertical portion corresponding to the connecting portion and a horizontal portion corresponding to the left strip portion and the right strip portion, wherein an area of the horizontal portion of the T shape corresponding to the left strip portion has a large size, and an area of the horizontal portion of the T shape corresponding to the right strip portion has a small size;
- the vertical groove comprises an integrally formed plate-shaped bottom member, and L-shaped left groove member and right groove member;
- the bottom member is connected to the corresponding left plate, a vertical portion of the left groove member is connected to a left side of the bottom member, a vertical portion of the right groove member is connected to a right side of the bottom member, and a horizontal portion of the left groove member and a horizontal portion of the right groove member are arranged separately;
- a spacing between the horizontal portion of the left groove member and the bottom member is greater than a spacing between the horizontal portion of the right groove member and the bottom member;
- when the vertical strip is inserted into the corresponding vertical groove from the opening of the corresponding vertical groove, the left strip portion slides along the left groove member, and the right strip portion slides along the right groove member;
- and the connecting portion is located in a gap between the horizontal portion of the left groove member and the horizontal portion of the right groove member.