Box having a variable size

Box (10) with variable box volume and/or box shape, wherein the box is convertible between a configuration with minimum box volume and a configuration with maximum box volume and vice versa, in particular wherein the box is made of plastic, with four box lateral walls (10a) and a box base (10b), wherein the box is configured as a multi-body system comprising a first, a second, a third and a fourth element (1, 2, 3, 4), wherein each element has two lateral walls (1a, 1b;

• 2a, 2b;
• 3a, 3b;
• 4a, 4b) and a base (1c, 2c, 3c, 4c) and is connected to two adjacent elements so that each element forms a corner of the box, wherein the box base (10b) is formed by at least partially overlapping the bases (1c, 2c, 3c, 4c) of all elements and each box lateral wall (10a) is formed by a lateral wall of one element and a lateral wall of an adjacent element (1b, 2a;
• 2b, 3a;
• 3b, 4a;
• 4b, la) in such a way that these lateral walls are pushed into one another, and wherein the lateral walls of the elements, which are pushed into one another, can each be shifted back-and-forth relatively to one another in a longitudinal direction (x;
• y) of the lateral walls between a minimum overlap position and a maximum overlap position, wherein the change in the box volume and/or the box shape is achieved by changing the length (L1;
• 12) of any two opposite box lateral walls (10a) or of any two opposite box lateral walls and then of the other two opposite box lateral walls, wherein each box lateral wall is formed by a lateral wall with a longitudinal guide (1a;
• 1b;
• 3a;
• 4a) and a lateral wall without longitudinal guide (2a;
• 2b;
• 3b;
• 4b) in such a way that the lateral wall without longitudinal guide can be accommodated in the longitudinal guide (9a) of the lateral wall with longitudinal guide and can be held therein so as to be shiftable back-and-forth.