Folding storage basket

Abstract

The invention relates to the field of storage articles, and discloses a folding storage basket which comprises a bottom plate assembly, a front and rear side plate assembly and a left and right side plate assembly, the bottom plate assembly comprises a first bottom plate, a second bottom plate, a third bottom plate and a fourth bottom plate, and the front and rear side plate assembly is rotationally connected with the first bottom plate and the second bottom plate; the left side plate assembly and the right side plate assembly are rotationally connected with the third bottom plate and the fourth bottom plate respectively, one side of the first bottom plate is rotationally connected with the third bottom plate, the other side of the first bottom plate is detachably connected with the second bottom plate and / or the fourth bottom plate along the bottom plate assembly, and one side of the second bottom plate is rotationally connected with the fourth bottom plate. The other side of the second bottom plate is detachably connected with the first bottom plate and / or the third bottom plate; during folding, opposite angles of the front-rear side plate assembly and the left-right side plate assembly in the diagonal direction are close to each other, and the bottom plate assembly is upwards rotated and folded to be contained between the front-rear side plate assembly and the left-right side plate assembly.

Description

Technical Field

[0001] This invention relates to the field of storage products technology, and more specifically, to a folding storage basket. Background Technology

[0002] Storage baskets are used to organize cluttered items. Traditional storage baskets are mostly individual baskets, taking up a lot of space when shipped. In international trade, shipping costs are related to volume; only by stacking more foldable products within the same space can transportation costs be reduced. Some foldable storage baskets can be folded up when not in use, reducing their space occupation and making them more versatile.

[0003] Currently available folding storage baskets either have a complex structure with many parts, resulting in a thick overall size when folded, and the base is typically a single, non-foldable plate. Alternatively, their structure is too loose, leading to poor stability when unfolded. When multiple baskets are stacked or subjected to significant pressure, they are prone to collapse, causing them to tip over or spill their contents. Furthermore, different components require different molds during production; the more types and / or quantities of components, the higher the production cost and the lower the production efficiency. Summary of the Invention

[0004] To address at least one of the aforementioned problems, the present invention first provides a folding storage basket, comprising a base plate assembly, front and rear side plate assemblies, and left and right side plate assemblies. The front and rear side plate assemblies are rotatably connected to the left and right side plate assemblies. The base plate assembly includes a first base plate, a second base plate, a third base plate, and a fourth base plate. The front and rear side plate assemblies are rotatably connected to the first base plate and the second base plate, respectively. The left and right side plate assemblies are rotatably connected to the third base plate and the fourth base plate, respectively. One side of the first base plate is rotatably connected to the third base plate, and the other side of the first base plate is detachably connected to the second base plate and / or the fourth base plate. One side of the second base plate is rotatably connected to the fourth base plate, and the other side of the second base plate is detachably connected to the first base plate and / or the third base plate.

[0005] The included angles between the front and rear side panel assemblies and the left and right side panel assemblies on the same plane form two sets of diagonal angles. When folded, one set of diagonal angles moves closer to each other, while the other set moves further apart, causing the first bottom plate to separate from the second bottom plate and / or the fourth bottom plate, and the second bottom plate to separate from the first bottom plate and / or the third bottom plate. The bottom plate assembly is rotated upward and folded to be accommodated between the front and rear side panel assemblies and the left and right side panel assemblies.

[0006] Optionally, the first base plate is provided with a first limiting block and a first protruding edge, and the second base plate is provided with a second limiting block and a second protruding edge, the first limiting block and the second protruding edge abutting vertically, and the second limiting block and the first protruding edge abutting vertically.

[0007] Optionally, the third base plate is provided with a third protruding edge, the fourth base plate is provided with a fourth protruding edge, the third protruding edge and the second protruding edge are engaged vertically, and the fourth protruding edge and the first protruding edge are engaged vertically.

[0008] Optionally, the first base plate, the second base plate, the third base plate, and the fourth base plate are respectively provided with a first limiting part, a second limiting part, a third limiting part, and a fourth limiting part. The first limiting part and the third limiting part abut against each other vertically to limit the rotational position of the first base plate and the third base plate, and the second limiting part and the fourth limiting part abut against each other vertically to limit the rotational position of the second base plate and the fourth base plate.

[0009] Optionally, the first base plate includes a first side, a second side, and a third side. The first side is hinged to the front and rear side plate assemblies, and the second side is hinged to the third base plate. The second side is located on the angle bisector of the base plate assembly, and the third side is detachably connected to both the second base plate and the fourth base plate. When the first base plate is a triangular plate, the third side is located on the diagonal of the base plate assembly. When the first base plate is a right trapezoidal plate, the third side is parallel to the first side.

[0010] Optionally, the base plate assembly is parallel to the horizontal plane; or, the base plate assembly arches upward from the extension direction of the third side to guide the base plate assembly to rotate upward during folding.

[0011] Optionally, the front and rear side panel assembly includes a front side panel and a rear side panel, and the left and right side panel assembly includes a left side panel and a right side panel. The left and right sides of the front side panel are respectively hinged to the left and right sides of the rear side panel, respectively hinged to the left and right sides of the rear side panel. The adjacent edges of the front side panel and the left side panel are both arc-shaped edges, and the adjacent edges of the rear side panel and the right side panel are both arc-shaped edges to prevent the corners from scratching the human body after folding. After folding, the front side panel and the right side panel are located in the same plane, and the rear side panel and the left side panel are located in the same plane.

[0012] Optionally, the shortest distance from the endpoint of the first base plate away from the front side plate to the front side plate is less than or equal to the height of the front side plate; the shortest distance from the endpoint of the third base plate away from the left side plate to the left side plate is less than or equal to the height of the left side plate.

[0013] Optionally, the front side panel and the rear side panel are the same, the left side panel and the right side panel are the same, the first bottom plate and the second bottom plate are the same, and the third bottom plate and the fourth bottom plate are the same.

[0014] Optionally, the upper end of the front and rear side panel assembly is provided with a first positioning part, the lower end of the front and rear side panel assembly is provided with a first mating part, the upper end of the left and right side panel assembly is provided with a second positioning part, and the lower end of the left and right side panel assembly is provided with a second mating part. The first mating part is adapted to be vertically inserted and positioned with the first positioning part of another folding storage basket, and the second mating part is adapted to be vertically inserted and positioned with the second positioning part of another folding storage basket, so that the folding storage baskets can be stacked vertically.

[0015] Compared to existing technologies, the folding storage basket of this invention utilizes a folding method where one set of diagonally opposite sides approaches each other and the other set moves away from each other during folding of the front and rear side panel assemblies and the left and right side panel assemblies, as well as a separable and rotatable connection between the bottom panel assemblies. This allows the bottom panel assembly to naturally rotate upwards and fold together during the folding process, while the front and rear side panel assemblies and the left and right side panel assemblies approach each other to a near-fitted state. This achieves a fast and smooth one-step folding, and the movement of each component is coordinated and without interference during the folding process. The folded structure is compact and neat, greatly saving storage and transportation space, effectively reducing the overall thickness after folding, and solving the problems of complex structure and excessive size after folding in traditional folding storage baskets. Attached Figure Description

[0016] Figure 1 This is a diagram showing the unfolded state of the folding storage basket according to Embodiment 1 of the present invention;

[0017] Figure 2 This is a diagram showing the folded storage basket in a semi-folded state according to Embodiment 1 of the present invention;

[0018] Figure 3 This is a diagram showing the folded state of the folding storage basket according to Embodiment 1 of the present invention;

[0019] Figure 4 This is a top view of the unfolded state of the folding storage basket according to Embodiment 1 of the present invention;

[0020] Figure 5 This is an exploded view of the folding storage basket according to Embodiment 1 of the present invention;

[0021] Figure 6 for Figure 5 Enlarged view of section A;

[0022] Figure 7 This is a structural diagram of the first base plate of Embodiment 1 of the present invention;

[0023] Figure 8This is a structural diagram of the third base plate according to Embodiment 1 of the present invention;

[0024] Figure 9 This is a diagram showing the unfolded state of the folding storage basket according to Embodiment 2 of the present invention;

[0025] Figure 10 This is a top view of the unfolded state of the folding storage basket according to Embodiment 2 of the present invention;

[0026] Figure 11 This is a schematic diagram of the folded state of the folding storage basket according to Embodiment 3 of the present invention.

[0027] Explanation of reference numerals in the attached figures:

[0028] 1. First base plate; 11. First limiting block; 12. First protruding edge; 121. First slot; 13. First limiting part; 14. First side; 15. Second side; 16. Third side; 2. Second base plate; 21. Second limiting block; 22. Second protruding edge; 221. Second slot; 23. Second limiting part; 3. Third base plate; 31. Third protruding edge; 311. Second locking block; 32. Third limiting part; 4. Fourth base plate; 41. Fourth protruding edge; 411. First locking block; 42. Fourth limiting part; 5. Front side plate; 51. First positioning part; 52. First mating part; 6. Rear side plate; 7. Left side plate; 71. Second positioning part; 72. Second mating part; 73. Grip opening; 8. Right side plate. Detailed Implementation

[0029] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0030] The accompanying drawings of the embodiments of the present invention provide a coordinate system XYZ, wherein the positive direction of the X-axis represents the left, the negative direction of the X-axis represents the right, the positive direction of the Y-axis represents the front, the negative direction of the Y-axis represents the back, the positive direction of the Z-axis represents the top, and the negative direction of the Z-axis represents the bottom.

[0031] like Figures 1 to 8 As shown, Example 1:

[0032] A folding storage basket includes a base plate assembly, front and rear side plate assemblies, and left and right side plate assemblies. The front and rear side plate assemblies are rotatably connected to the left and right side plate assemblies. The base plate assembly includes a first base plate 1, a second base plate 2, a third base plate 3, and a fourth base plate 4. The front and rear side plate assemblies are rotatably connected to the first base plate 1 and the second base plate 2, respectively. The left and right side plate assemblies are rotatably connected to the third base plate 3 and the fourth base plate 4, respectively. One side of the first base plate 1 is rotatably connected to the third base plate 3, and the other side of the first base plate 1 is detachably connected to the second base plate 2 and / or the fourth base plate 4. One side of the second base plate 2 is rotatably connected to the fourth base plate 4, and the other side of the second base plate 2 is detachably connected to the first base plate 1 and / or the third base plate 3.

[0033] The included angles between the front and rear side panel assemblies and the left and right side panel assemblies on the same plane form two sets of diagonal angles. When folded, one set of diagonal angles moves closer to each other, while the other set moves further apart, causing the first base plate 1 to separate from the second base plate 2 and / or the fourth base plate 4, and the second base plate 2 to separate from the first base plate 1 and / or the third base plate 3. The base plate assembly is rotated upward and folded to be accommodated between the front and rear side panel assemblies and the left and right side panel assemblies.

[0034] like Figures 1 to 3 As shown, the base plate assembly is square, and the separation direction is diagonal. By designing the base plate assembly as four interconnected panels that can be separated along the diagonal, combined with the rotational connection of the front and rear side panels and the left and right side panels, the storage basket achieves stable support in the unfolded state and compact storage in the folded state. Utilizing the diagonal connection and separation mechanism, the base plate assembly can naturally rotate upwards and fold during the folding process, with the front and rear side panels and the left and right side panels approaching each other to a near-fitting state, achieving a quick and smooth one-step folding. Furthermore, the movement of each component is coordinated and interference-free during the folding process, resulting in a compact and neat structure after folding. This greatly saves storage and transportation space, effectively reduces the overall thickness after folding, and solves the problems of complex structure and excessive size of traditional folding storage baskets.

[0035] like Figure 5 and Figure 7 As shown, optionally, the first base plate 1 is provided with a first limiting block 11 and a first protruding edge 12, and the second base plate 2 is provided with a second limiting block 21 and a second protruding edge 22. The first limiting block 11 and the second protruding edge 22 abut against each other vertically, the second limiting block 21 and the first protruding edge 12 abut against each other vertically, and the side wall of the first limiting block 11 abuts against the side wall of the second limiting block 21.

[0036] The first base plate 1 and the second base plate 2, as the two larger plates on the base plate assembly, play a major load-bearing role. By setting the first limiting block 11 to abut against the second protruding edge 22 and the second limiting block 21 to abut against the first protruding edge 12, the base plate assembly forms a limiting and supporting structure when unfolded. This significantly enhances the integrity and structural stability of the base plate assembly in the unfolded state, effectively preventing misalignment, sinking, or deformation of the base plate assembly when bearing objects, and ensuring the reliability and durability of the storage basket in use.

[0037] like Figure 5 and Figure 8 As shown, optionally, the third base plate 3 is provided with a third protruding edge 31, the fourth base plate 4 is provided with a fourth protruding edge 41, the third protruding edge 31 and the second protruding edge 22 are engaged vertically, and the fourth protruding edge 41 and the first protruding edge 12 are engaged vertically.

[0038] The first protruding edge 12 is provided with a first slot 121, the fourth protruding edge 41 is provided with a first block 411, the first block 411 and the first slot 121 are engaged vertically, the second protruding edge 22 is provided with a second slot 221, and the third protruding edge 31 is provided with a second block 311, the second block 311 and the second slot 221 are engaged vertically.

[0039] The interlocking mechanism of the locking blocks and slots strengthens the connection between the first base plate 1 and the fourth base plate 4, as well as the connection between the second base plate 2 and the third base plate 3. This interlocking structure between the base plate components not only improves the overall rigidity and load-bearing capacity of the base plate assembly but also effectively disperses local stress, preventing individual base plates from separating or the structure from becoming loose under heavy pressure, thus enhancing the overall stability of the storage basket.

[0040] like Figure 5 , Figure 7 , Figure 8 As shown, optionally, the first base plate 1, the second base plate 2, the third base plate 3, and the fourth base plate 4 are respectively provided with a first limiting part 13, a second limiting part 23, a third limiting part 32, and a fourth limiting part 42. The first limiting part 13 and the third limiting part 32 abut against each other vertically to limit the rotational position of the first base plate 1 and the third base plate 3. The second limiting part 23 and the fourth limiting part 42 abut against each other vertically to limit the rotational position of the second base plate 2 and the fourth base plate 4.

[0041] The first base plate 1 has two spaced slots, forming a first limiting part 13 with a certain elasticity between the slots, and a third limiting part 32 is a protrusion. In the unfolded state, the first limiting part 13 abuts against the third limiting part 32, thereby restricting the downward rotation of the first base plate 1 and the third base plate 3. At the same time, the elastic first limiting part 13 can act as a buffer to prevent the base plate from breaking during a hard collision. The first limiting part 13 is the same as the second limiting part 23, and the third limiting part 32 is the same as the fourth limiting part 42. The rotation limiting method of the second base plate 2 and the fourth base plate 4 is the same.

[0042] This design ensures that the base plate assembly is accurately positioned on the same horizontal support surface after unfolding, providing a flat and reliable bottom support for the storage basket, while preventing the base plate assembly from being over-unfolded or under-unfolded, thus ensuring the consistency of the product's usage status.

[0043] like Figure 4 As shown, optionally, the first base plate 1 includes a first side 14, a second side 15, and a third side 16. The first side 14 is hinged to the front and rear side plate assemblies, the second side 15 is hinged to the third base plate 3, the second side 15 is located on the angle bisector of the base plate assembly, and the third side 16 is detachably connected to both the second base plate 2 and the fourth base plate 4. When the first base plate 1 is a triangular plate, the third side 16 is located on the diagonal direction of the base plate assembly.

[0044] The second side 15 is a rotatable connecting edge, and the third side 16 is a detachable connecting edge. The rotatable connecting edge is located on the angle bisector of the base plate assembly, allowing the first base plate 1 and the third base plate 3 to fold smoothly without warping or jamming. This geometric design makes the base plate assembly more rationally stressed and smoother in movement during folding and unfolding, which helps to achieve a more compact folding form. At the same time, it ensures that the first base plate 1, the second base plate 2, the third base plate 3, and the fourth base plate 4 can effectively cover and support the bottom area in the unfolded state, improving space utilization efficiency and structural rationality.

[0045] Optionally, the base plate assembly is parallel to the horizontal plane; or, the base plate assembly arches upward from the extension direction of the third side 16 to guide the base plate assembly to rotate upward during folding.

[0046] like Figure 1 and Figure 4 In the first embodiment shown, the base plate assembly is parallel to the horizontal plane, that is, it is a plane when unfolded. The planar design makes it less likely for objects to shake or tip over when placed in the folding storage basket, and the objects are arranged more neatly.

[0047] In other embodiments, the base plate assembly may be slightly arched upwards. This upward arching allows the bottom assembly to rotate upwards during folding, guided by the pressure of the front and rear side plate assemblies and the left and right side plate assemblies coming close together. This eliminates the need for external force to press the bottom of the base plate assembly upwards, making folding more convenient and faster, and ensuring smoother rotation between the base plate assemblies. During production, this arching can be achieved by setting an interference fit between the first base plate 1, the second base plate 2, the third base plate 3, and the fourth base plate 4, thereby achieving an interference arch at the center of the base plate assembly.

[0048] It is worth noting that this upward-arched structure includes the first base plate 1, the second base plate 2, the third base plate 3, and the fourth base plate 4 arching slightly upward at the center of the base plate assembly, causing the upper surface of the supported object to arch. It also includes the fact that the upper surfaces of the first base plate 1, the second base plate 2, the third base plate 3, and the fourth base plate 4 are flat, with grooves at the bottom, giving the bottom of the base plate assembly a grooved shape that arches towards the center. This guides the rotational folding direction of the base plate assembly without affecting the stable storage of the object. Specifically, when the front and rear side panel assemblies and the left and right side panel assemblies are subjected to external pressure, the grooves can distribute an upward (i.e., Z-direction) component of the pressure force on the base plate assembly itself, acting as an initial guide and ultimately achieving a one-step folding of the folding basket without requiring a preparatory upward pressing action to open the base plate assembly before folding.

[0049] like Figures 1 to 3 As shown, optionally, the front and rear side panel assembly includes a front side panel 5 and a rear side panel 6, and the left and right side panel assembly includes a left side panel 7 and a right side panel 8. The left and right sides of the front side panel 5 are respectively hinged to the left side panel 7 and the right side panel 8, and the left and right sides of the rear side panel 6 are respectively hinged to the left side panel 7 and the right side panel 8. The adjacent edges of the front side panel 5 and the left side panel 7 are all curved edges, and the adjacent edges of the rear side panel 6 and the right side panel 8 are all curved edges to prevent the corners from scratching the human body after folding. After folding, the front side panel 5 and the right side panel 8 are located in the same plane, and the rear side panel 6 and the left side panel 7 are located in the same plane.

[0050] Both the left side panel 7 and the right side panel 8 are equipped with grip openings 73 for easy hand handling. The rounded corners effectively eliminate sharp edges, significantly improving product safety and preventing scratches during handling or folding. The folded storage basket becomes a neat, flat structure, which is not only aesthetically pleasing but also easier to bundle and stack, enhancing storage and transportation convenience. When shipping, it reduces space occupation, especially important in international trade where shipping costs are related to volume; it allows for the stacking of more folded products within the same space, saving costs.

[0051] like Figure 1 and Figure 3 As shown, optionally, the shortest distance from the endpoint of the first base plate 1 away from the front side plate 5 to the front side plate 5 is less than or equal to the height of the front side plate 5; the shortest distance from the endpoint of the third base plate 3 away from the left side plate 7 to the left side plate 7 is less than or equal to the height of the left side plate 7.

[0052] This dimensional relationship defines the storage space range of the base plate in the folded state, ensuring that the base plate assembly can be completely accommodated in the space formed by the front and rear side plate assemblies and the left and right side plate assemblies after being rotated and folded upwards. This avoids the parts protruding upwards after folding, ensuring the flatness and compactness of the folded body outline, and facilitating stacking and storage during transportation and storage.

[0053] like Figure 1 As shown, optionally, the front side plate 5 and the rear side plate 6 are the same, the left side plate 7 and the right side plate 8 are the same, the first bottom plate 1 and the second bottom plate 2 are the same, and the third bottom plate 3 and the fourth bottom plate 4 are the same.

[0054] It uses a total of 8 components, with each pair being identical and arranged symmetrically along the center. This symmetrical design allows identical components to use the same set of molds during production, greatly reducing the types of molds and the number of parts required in the manufacturing process, thus lowering production costs. It also simplifies the assembly process and improves production efficiency. When folded, the storage basket forms a thin plate state, with only 4 plates in the thickness direction, making it much thinner and lighter than other folding methods in existing technologies.

[0055] like Figure 6 As shown, optionally, the upper end of the front and rear side panel assembly is provided with a first positioning part 51, the lower end of the front and rear side panel assembly is provided with a first mating part 52, the upper end of the left and right side panel assembly is provided with a second positioning part 71, and the lower end of the left and right side panel assembly is provided with a second mating part 72. The first mating part 52 is adapted to be vertically inserted and positioned with the first positioning part 51 of another folding storage basket, and the second mating part 72 is adapted to be vertically inserted and positioned with the second positioning part 71 of another folding storage basket, so that the folding storage baskets can be stacked vertically.

[0056] Both the first positioning part 51 and the second positioning part 71 are protrusions, and the protrusions of the first positioning part 51 and the second positioning part 71 are perpendicular to each other. Both the first mating part 52 and the second mating part 72 are grooves formed by bottom support legs. The protrusions are inserted into the grooves to achieve positioning in the front-back and left-right directions. This allows multiple unfolded storage baskets to be stacked safely and stably, effectively utilizing vertical space, making them particularly suitable for warehousing, shelf display, or home space optimization. In addition, the first mating part 52 and the second mating part 72 can also be used as support legs to raise the height of the storage baskets, while increasing the distance between stacked storage baskets, thus increasing the height at which objects can be placed.

[0057] like Figure 9 and Figure 10 As shown, Example 2:

[0058] The main difference between Embodiment 2 and Embodiment 1 is that the first base plate 1 is a right-angled trapezoidal plate, the third side 16 is parallel to the first side 14, and the third side 16 is close to the center line of the base plate assembly. Anti-slip textures are provided on the front and rear side plate assemblies and the left and right side plate assemblies. The folding method of Embodiment 2 is the same as that of Embodiment 1, only the separation direction of the detachable connection is different, which will not be described further here. Preferably, the separation direction of the detachable connection should pass through the center point of the base plate assembly, so that the folding and separation process is smoother and the folded and unfolded states are more aesthetically pleasing.

[0059] like Figure 11 As shown, Example 3:

[0060] The main difference between Embodiment 3 and Embodiment 1 is that the base plate assembly is circular, and the front and rear side plate assemblies and the left and right side plate assemblies form a ring around the base plate assembly. The folding method is the same as in Embodiment 1, and will not be described again here. In other embodiments, the base plate assembly can also be a parallelogram or an ellipse, and its folding method is also the same as in Embodiment 1.

[0061] While the disclosure is as stated above, its scope of protection is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of this disclosure, and all such changes and modifications will fall within the protection scope of this invention.

Claims

1. A folding storage basket, characterized in that, The system includes a base plate assembly, front and rear side plate assemblies, and left and right side plate assemblies. The front and rear side plate assemblies are rotatably connected to the left and right side plate assemblies. The base plate assembly includes a first base plate (1), a second base plate (2), a third base plate (3), and a fourth base plate (4). The front and rear side plate assemblies are rotatably connected to the first base plate (1) and the second base plate (2), respectively. The left and right side plate assemblies are rotatably connected to the third base plate (3) and the fourth base plate (4), respectively. One side of the first base plate (1) is rotatably connected to the third base plate (3). The other side of the first base plate (1) is detachably connected to the second base plate (2) and / or the fourth base plate (4). One side of the second base plate (2) is rotatably connected to the fourth base plate (4). The other side of the second base plate (2) is detachably connected to the first base plate (1) and / or the third base plate (3). The included angles between the front and rear side panel assemblies and the left and right side panel assemblies on the same plane form two sets of diagonal angles. When folded, one set of diagonal angles moves closer to each other, and the other set of diagonal angles moves further apart, so that the first base plate (1) is separated from the second base plate (2) and / or the fourth base plate (4), and the second base plate (2) is separated from the first base plate (1) and / or the third base plate (3). The base plate assembly is rotated upward and folded to be accommodated between the front and rear side panel assemblies and the left and right side panel assemblies.

2. The folding storage basket according to claim 1, characterized in that, The first base plate (1) is provided with a first limiting block (11) and a first protruding edge (12), and the second base plate (2) is provided with a second limiting block (21) and a second protruding edge (22). The first limiting block (11) and the second protruding edge (22) abut against each other vertically, and the second limiting block (21) and the first protruding edge (12) abut against each other vertically.

3. The folding storage basket according to claim 2, characterized in that, The third base plate (3) is provided with a third protruding edge (31), and the fourth base plate (4) is provided with a fourth protruding edge (41). The third protruding edge (31) and the second protruding edge (22) are engaged vertically, and the fourth protruding edge (41) and the first protruding edge (12) are engaged vertically.

4. The folding storage basket according to claim 1, characterized in that, The first base plate (1), the second base plate (2), the third base plate (3) and the fourth base plate (4) are respectively provided with a first limiting part (13), a second limiting part (23), a third limiting part (32) and a fourth limiting part (42). The first limiting part (13) and the third limiting part (32) abut against each other to limit the rotational position of the first base plate (1) and the third base plate (3). The second limiting part (23) and the fourth limiting part (42) abut against each other to limit the rotational position of the second base plate (2) and the fourth base plate (4).

5. The folding storage basket according to claim 1, characterized in that, The first base plate (1) includes a first side (14), a second side (15) and a third side (16). The first side (14) is hinged to the front and rear side plate assemblies, and the second side (15) is hinged to the third base plate (3). The second side (15) is located on the angle bisector of the base plate assembly. The third side (16) is detachably connected to both the second base plate (2) and the fourth base plate (4). When the first base plate (1) is a triangular plate, the third side (16) is located on the diagonal of the base plate assembly. When the first base plate (1) is a right trapezoidal plate, the third side (16) is parallel to the first side (14).

6. The folding storage basket according to claim 5, characterized in that, The base plate assembly is parallel to the horizontal plane; or, the base plate assembly arches upward from the extension direction of the third side (16) so as to guide the base plate assembly to rotate upward during folding.

7. The folding storage basket according to claim 1, characterized in that, The front and rear side panel assembly includes a front side panel (5) and a rear side panel (6). The left and right side panel assembly includes a left side panel (7) and a right side panel (8). The left side panel (7) and the right side panel (8) are respectively hinged to the left and right sides of the front side panel (5). The left side panel (7) and the right side panel (8) are respectively hinged to the left and right sides of the rear side panel (6). The adjacent edges of the front side panel (5) and the left side panel (7) are all curved edges. The adjacent edges of the rear side panel (6) and the right side panel (8) are all curved edges to prevent the corners from scratching the human body after folding. After folding, the front side panel (5) and the right side panel (8) are located in the same plane. The rear side panel (6) and the left side panel (7) are located in the same plane.

8. The folding storage basket according to claim 7, characterized in that, The shortest distance from the endpoint of the first base plate (1) away from the front side plate (5) to the front side plate (5) is less than or equal to the height of the front side plate (5); the shortest distance from the endpoint of the third base plate (3) away from the left side plate (7) to the left side plate (7) is less than or equal to the height of the left side plate (7).

9. The folding storage basket according to claim 7, characterized in that, The front side plate (5) and the rear side plate (6) are the same, the left side plate (7) and the right side plate (8) are the same, the first bottom plate (1) and the second bottom plate (2) are the same, and the third bottom plate (3) and the fourth bottom plate (4) are the same.

10. The folding storage basket according to any one of claims 1-9, characterized in that, The upper end of the front and rear side panel assembly is provided with a first positioning part (51), the lower end of the front and rear side panel assembly is provided with a first mating part (52), the upper end of the left and right side panel assembly is provided with a second positioning part (71), the lower end of the left and right side panel assembly is provided with a second mating part (72), the first mating part (52) is adapted to be inserted and positioned vertically with the first positioning part (51) of another folding storage basket, and the second mating part (72) is adapted to be inserted and positioned vertically with the second positioning part (71) of another folding storage basket, so that the folding storage baskets can be stacked vertically.

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