Foldable storage box

Abstract

The utility model belongs to the technical field of storage boxes, and particularly relates to a foldable storage box which comprises a main body unit, a top plate is detachably arranged on the main body unit, the main body unit comprises a bottom plate, side plates are arranged on the two sides of the bottom plate, and the bottom plate comprises a first base plate and a second base plate. The first base plate and the second base plate are oppositely folded so that the two side plates on the two sides of the bottom plate can be close to each other, the side plates are detachably connected with the top plate, and the two side plates are oppositely fixed. A supporting groove is formed in the upper portion of the side, close to the second base plate, of the first base plate, the upper side of the second base plate extends towards the first base plate to form a supporting protruding edge, the supporting protruding edge abuts against the interior of the supporting groove so that the first base plate and the second base plate can be stably unfolded, the first base plate is rotationally connected with the second base plate through a hinge rod, and the hinge rod is arranged on the lower side of the supporting groove. The supporting protruding edge can turn over towards the upper portion of the supporting groove and enables the first base plate and the second base plate to be folded oppositely. The foldable storage box is stable in structure and long in service life.

Description

Technical Field

[0001] The utility model belongs to the technical field of storage boxes, and particularly relates to a foldable storage box. Background Art

[0002] Storage boxes are boxes specially used to organize messy items. Traditional storage boxes are mostly independent boxes. Now, in order to facilitate users, many storage boxes on the market can be combined with each other to form a group of storage cabinets.

[0003] With the rapid development of e-commerce in recent years, manufacturers pay special attention to whether the products are easy to store and transport when producing products. Therefore, most storage boxes on the market can be folded, and when users receive the storage boxes, the storage boxes can also be quickly unfolded. For example, Chinese utility model patent application CN202222285358.6 discloses a foldable structure of a storage cabinet, which includes a top plate, a bottom plate, and two side plates connecting the top plate and the bottom plate on both sides, and the top plate is detachably connected to the side plates; the bottom plate includes a bottom plate 1 and a bottom plate 2 that are hinged to each other, and one end of the bottom plate 1 and the bottom plate 2 is respectively hinged to the side plates on both sides; a fixing block is provided on the bottom plate 1 or the bottom plate 2, and a fixing groove that cooperates with the fixing block is provided on the bottom plate 2 or the bottom plate 1; when the bottom plate 1 and the bottom plate 2 are in the unfolded state, the fixing block is plugged into the fixing groove to limit the folding of the bottom plate 1 and the bottom plate 2, and the top plate is covered, and the storage cabinet is unfolded.

[0004] The above structure has good stability and is easy to assemble, but the fixed block will swing relative to the fixed groove when the storage box is unfolded or folded, resulting in a larger cross-section of the fixed groove, a smaller length of the fixed block, and a larger gap between the fixed block and the fixed groove, which affects the strength of the fixed groove and the fixed block, and further affects the service life of the storage cabinet. Summary of the invention

[0005] In order to overcome the defects in the prior art, the purpose of the utility model is to provide a foldable storage box with a stable structure and a long service life.

[0006] The purpose of the utility model is achieved in this way:

[0007] A foldable storage box, comprising a main body unit, a top plate detachably provided on the main body unit, the main body unit comprising a bottom plate, side plates are provided on both sides of the bottom plate, the bottom plate comprises a first base plate and a second base plate respectively connected to the two side plates, the first base plate and the second base plate are folded relative to each other so that the two side plates on both sides of the bottom plate can be brought close to each other, the side plates are respectively detachably connected to the top plate so that the two side plates are relatively fixed, thereby limiting the relative folding of the first base plate and the second base plate;

[0008] A supporting groove is arranged above the first substrate on one side close to the second substrate, and a supporting convex edge is formed on the upper side of the second substrate extending toward the first substrate, and the supporting convex edge is pressed against the supporting groove so that the first substrate and the second substrate can be stably unfolded, and the first substrate is rotatably connected to the second substrate through a hinge rod, and the hinge rod is arranged at the lower side of the supporting groove, and the supporting convex edge can be flipped above the supporting groove so that the first substrate and the second substrate can be folded relative to each other.

[0009] The utility model is further configured as follows: a slot portion and a hook portion are respectively provided on the first substrate and the second substrate, and the hook portion and the slot portion cooperate to keep the first substrate and the second substrate in an unfolded state; and under the action of external force, the hook portion and the slot portion can cooperate with or disengage from each other.

[0010] The utility model is further configured as follows: the side plate extends below the first substrate or the second substrate to form a support wall, the support wall abuts against the lower side of the first substrate or the second substrate and prevents the middle part of the bottom plate from bending downward.

[0011] The utility model is further configured as follows: the bottom plate and the side plates are respectively provided with connecting protrusions and connecting grooves, the connecting protrusions and the connecting grooves cooperate to enable the bottom plate and the side plates to be movably connected and prevent the bottom plate and the side plates from being separated, first plug-in parts are respectively provided on both sides of the bottom plate, and first plug-in holes adapted to the first plug-in parts are provided on the side surfaces of the side plates, the first plug-in parts cooperate with the first plug-in holes to limit the relative folding of the side plates and the bottom plate, and the side plates can move toward both sides of the bottom plate and separate the first plug-in parts from the first plug-in holes; the side plates are respectively detachably connected to the top plates, and limit the side plates from moving toward both sides of the bottom plate, so that the first plug-in parts remain connected to the first plug-in holes.

[0012] The utility model is further configured as follows: the side panel comprises an L-shaped side panel body and a connecting portion, a connecting groove is provided on the connecting portion, and the connecting protrusion moves along the connecting groove to move the side panel body to one side of the bottom panel, so that the side panel body can be folded and pressed against the bottom panel relative to each other.

[0013] The utility model is further configured as follows: a first elastic hook is provided on the side of the first plug-in portion, a first slot is provided on the side wall of the first plug-in hole, and the first elastic hook cooperates with the first slot to prevent the first plug-in portion from accidentally disengaging from the first plug-in hole.

[0014] The utility model is further configured as follows: a positioning protrusion is provided on the side panel, a first positioning groove adapted to the positioning protrusion is provided on the top panel, a second elastic hook is provided on the side panel, and a second groove is provided on the top panel, and the second elastic hook cooperates with the second groove to avoid accidental separation from the first positioning groove.

[0015] The utility model is further configured as follows: it includes at least two main body units, which are stacked vertically in sequence, the positioning protrusion and the second elastic hook are arranged at the upper end of the side plate, and the second positioning groove and the third groove are arranged at the lower end of the side plate; when the main body units are connected to each other, the positioning protrusion cooperates with the second positioning groove, and the second elastic hook cooperates with the third groove.

[0016] The utility model is further configured as follows: the upper and lower ends of the side panels are respectively provided with convex edges and concave portions, and when the main units are connected to each other, the convex edges and concave portions on adjacent side panels cooperate with each other and the connection positions of the adjacent side panels are staggered in the horizontal direction.

[0017] The utility model is further configured as follows: the bottom plate extends to the front and rear sides of the side plates to form connecting seats, the connecting seats are provided with connecting protrusions, and the front and rear sides of the side plates are provided with limiting grooves, the connecting seats are passed through the limiting grooves, and the connecting grooves are provided on the side walls of the limiting grooves.

[0018] Compared with the prior art, the utility model has the following advantages:

[0019] 1. The arrangement of the supporting protrusion and the supporting groove in the utility model enables the first substrate and the second substrate to be stacked vertically and tightly connected, which is beneficial to increasing the contact area between the first substrate and the second substrate, avoiding deformation and damage of the first substrate and the second substrate caused by stress concentration, and the supporting protrusion and the supporting groove will not interfere with each other during the relative folding or unfolding of the first substrate and the second substrate, which is beneficial to improving the structural strength of the bottom plate and extending the service life of the foldable storage box.

[0020] 2. The arrangement of the hook portion and the slot portion in the utility model facilitates the first substrate and the second substrate to maintain a relatively unfolded state, avoids accidental folding of the bottom plate during use or assembly, and is convenient for users to use and assemble; the arrangement of the support wall can provide auxiliary support for the first substrate and the second substrate, avoids the downward bending of the middle part of the bottom plate, thereby dispersing the force on the first plug-in portion and the first plug-in hole as well as the support ridge and the support groove, avoids the relative force between the first plug-in portion, the first plug-in hole, the support ridge and the support groove being too large and deformed or even damaged, avoids damage to the bottom plate, and is conducive to extending the service life of the foldable storage box.

[0021] 3. In the utility model, the bottom plate and the side plate are movably connected, and the relative folding of the side plate and the bottom plate is limited by the cooperation of the first plug-in portion and the first plug-in hole, and the first plug-in portion and the first plug-in hole are kept connected by connecting the top plate to the side plate, which is conducive to the stable unfolding of the bottom plate and the side plate, and avoids deformation or shaking of the foldable storage box during use. In addition, this structure is conducive to increasing the connection strength between the bottom plate and the side plate, and avoids damage to the supporting protrusion and the supporting groove or the connection position between the bottom plate and the side plate due to the heavy load-bearing of the bottom plate, which is conducive to extending the service life of the foldable storage box; the L-shaped side plate body and the connecting portion can avoid mutual interference between the side plate body and the bottom plate during folding, facilitate the close proximity of the side plate and the bottom plate, and help reduce the volume of the folded storage box and avoid bending and damage of the side plate and the bottom plate during folding.

[0022] 4. The arrangement of the first elastic hook and the first slot in the present invention facilitates the close connection between the first plug-in portion and the first plug-in hole, thereby preventing the first plug-in portion and the first plug-in hole from becoming loose or even detached during use, thus facilitating use by users.

[0023] 5. The arrangement of the positioning protrusion, the first positioning groove, the second elastic hook and the second groove in the utility model facilitates the stable connection between the top plate and the main unit, avoids the loose connection between the top plate and the side plate during use, and can avoid the side plate from tilting toward the middle of the foldable storage box; the arrangement of the second positioning groove and the third groove facilitates the stacking of the main units in sequence, facilitates the flexible assembly of the foldable storage box, and is convenient for users to purchase and assemble according to their needs; the arrangement of the convex edge and the concave portion facilitates the stable connection of the side plates of adjacent main units, and avoids the side plates from tilting and deforming due to excessive force.

[0024] 6. The setting of the limit groove and the connecting seat in the utility model prevents the bottom plate from tilting upward or downward, which is conducive to the stable deployment of the main unit, and can prevent the connecting seat from protruding from the side of the side plate, thereby preventing the connecting seat from being bumped and damaged during mobile transportation. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a usage state diagram of the utility model;

[0026] Figure 2 It is an explosion schematic diagram of the utility model;

[0027] Figure 3 It is a structural schematic diagram of the main body unit of the utility model during the folding process;

[0028] Figure 4 It is a schematic diagram of the structure of the main unit of the utility model when it is folded;

[0029] Figure 5 It is a schematic diagram of the structure when the top plate and two main body units are assembled in the utility model;

[0030] Figure 6 It is a schematic diagram of the structure when two main body units of the utility model are folded;

[0031] Figure 7 It is a structural schematic diagram of the top plate in the utility model;

[0032] Figure 8 It is a structural schematic diagram of the bottom plate of the utility model;

[0033] Fig. 9 This is a schematic diagram of the structure of the bottom plate of the utility model during the folding process;

[0034] Fig.10 It is a structural schematic diagram of the first substrate in the utility model;

[0035] Fig.11 It is a structural schematic diagram of the second substrate in the utility model;

[0036] Fig.12 It is one of the structural schematic diagrams of the side plate in the utility model;

[0037] Fig.13 This is the second structural schematic diagram of the side plate in the utility model;

[0038] Fig.14 It is a structural schematic diagram of the back plate in the utility model.

[0039] Meanings of the numbers in the figure: 1-top plate; 11-first positioning groove; 12-second clamping groove; 2-bottom plate; 21-first base plate; 22-connecting seat; 23-connecting protrusion; 24-first plug-in portion; 25-first elastic hook; 26-second base plate; 211-supporting groove; 212-cage portion; 213-first mounting protrusion; 214-hinged rod; 215-swinging groove; 261-supporting protrusion; 262-cage portion; 263-first Two mounting protrusions; 264-hinge hole; 3-side panel; 31-side panel body; 32-connecting part; 33-first plug-in hole; 34-positioning protrusion; 35-second elastic hook; 36-convex edge; 37-recess; 38-support wall; 39-second positioning groove; 311-fixing groove; 321-limiting groove; 322-connecting groove; 331-first slot; 391-third slot; 4-back panel; 41-fixing hook; 5-suspension rod. DETAILED DESCRIPTION

[0040] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments:

[0041] See also Figures 1 to 11As shown, a foldable storage box includes a main body unit, on which a top plate 1 is detachably provided, the main body unit includes a bottom plate 2, both sides of the bottom plate 2 are provided with side plates 3, the bottom plate 2 includes a first base plate 21 and a second base plate 26 respectively connected to the two side plates 3, the first base plate 21 and the second base plate 26 are folded relative to each other so that the two side plates 3 on both sides of the bottom plate 2 can be close to each other, the side plates 3 are respectively detachably connected to the top plate 1, so that the two side plates 3 are relatively fixed, thereby limiting the relative folding of the first base plate 21 and the second base plate 26; A support groove 211 is provided above one side of a substrate 21 close to the second substrate 26. The upper side of the second substrate 26 extends toward the first substrate 21 to form a support ridge 261. The support ridge 261 is pressed against the support groove 211 to stably unfold the first substrate 21 and the second substrate 26. The first substrate 21 is rotatably connected to the second substrate 26 via a hinge rod 214. The hinge rod 214 is provided at the lower side of the support groove 211. The support ridge 261 can be flipped above the support groove 211 to fold the first substrate 21 and the second substrate 26 relative to each other.

[0042] The arrangement of the supporting protrusion 261 and the supporting groove 211 in this structure enables the first substrate 21 and the second substrate 26 to be stacked vertically and tightly connected, which is beneficial to increasing the contact area between the first substrate 21 and the second substrate 26 and avoiding stress concentration that causes deformation and damage of the first substrate 21 and the second substrate 26. In addition, the supporting protrusion 261 and the supporting groove 211 will not interfere with each other during the relative folding or unfolding of the first substrate 21 and the second substrate 26, which is beneficial to improving the structural strength of the bottom plate 2 and extending the service life of the foldable storage box. The utility model preferably extends the two ends of the supporting groove 211 to the front and rear ends of the first substrate 21, and the two ends of the supporting protrusion 261 to the front and rear ends of the second substrate 26.

[0043] In the utility model, the first mounting protrusion 213 and the second mounting protrusion 263 are respectively arranged below the first substrate 21 and the second substrate 26, and the first mounting protrusion 213 and the second mounting protrusion 263 are respectively provided with a hinge rod 214 and a hinge hole 264 that are rotatably connected, and a swing groove 215 is arranged on the first substrate 21, and the swing groove 215 is arranged on one side of the first mounting protrusion 213, and the second mounting protrusion 263 is penetrated in the swing groove 215, and the second mounting protrusion 263 can abut against the side wall of the swing groove 215 and limit the relative rotation of the first substrate 21 and the second substrate 26.

[0044] The first substrate 21 and the second substrate 26 are respectively provided with a slot portion 212 and a hook portion 262, and the hook portion 262 and the slot portion 212 cooperate to keep the first substrate 21 and the second substrate 26 in an unfolded state; and under the action of external force, the hook portion 262 and the slot portion 212 can cooperate with or disengage from each other. The arrangement of the slot portion 212 and the hook portion 262 facilitates the first substrate 21 and the second substrate 26 to maintain a relatively unfolded state, thereby avoiding accidental folding of the bottom plate 2 during use or assembly, and facilitating use and assembly by users.

[0045] The bottom plate 2 and the side plate 3 are respectively provided with connecting protrusions 23 and connecting grooves 322, which cooperate to make the bottom plate 2 and the side plate 3 movably connected and prevent the bottom plate 2 and the side plate 3 from being separated, and first plug-in parts 24 are respectively provided on both sides of the bottom plate 2, and first plug-in holes 33 adapted to the first plug-in parts 24 are provided on the side surfaces of the side plate 3, and the first plug-in parts 24 cooperate with the first plug-in holes 33 to limit the relative folding of the side plate 3 and the bottom plate 2, and the side plate 3 can move to both sides of the bottom plate 2 and separate the first plug-in parts 24 from the first plug-in holes 33; the side plates 3 are respectively detachably connected to the top plate 1, and limit the side plates 3 from moving to both sides of the bottom plate 2, so that the first plug-in parts 24 and the first plug-in holes 33 can be separated. A plug-in portion 24 is kept connected to the first plug-in hole 33. In this structure, the bottom plate 2 and the side plate 3 are movably connected. The first plug-in portion 24 cooperates with the first plug-in hole 33 to limit the relative folding of the side plate 3 and the bottom plate 2, and the first plug-in portion 24 is kept connected to the first plug-in hole 33 by connecting the top plate 1 to the side plate 3. This is conducive to the stable unfolding of the foldable storage box and avoids deformation or shaking of the foldable storage box during use. In addition, this structure is conducive to increasing the connection strength between the bottom plate 2 and the side plate 3, avoiding the bottom plate 2 from tilting downward and deforming due to the heavy load-bearing, or even damage to the connection position between the bottom plate 2 and the side plate 3, which is conducive to extending the service life of the foldable storage box.

[0046] In the present invention, a first elastic hook 25 is provided on the side of the first plug-in portion 24, and a first slot 311 is provided on the side wall of the first plug-in hole 33. The first elastic hook 25 cooperates with the first slot 311 to avoid accidental separation of the first plug-in portion 24 and the first plug-in hole 33. The setting of the first elastic hook 25 and the first slot 311 facilitates the tight connection between the first plug-in portion 24 and the first plug-in hole 33, avoids loose connection or even separation between the first plug-in portion 24 and the first plug-in hole 33 during use, and is convenient for users.

[0047] When in use, the user can only use the foldable storage box composed of the main unit and the top plate 1, and the user can also set a back plate 4 on the rear side of the main unit, and the back plate 4 is detachably connected to the two side plates 3, and a hanging rod 5 is set on the front side of the top plate 1. The back plate 4 detachably connected to the two side plates 3 facilitates the stable unfolding of the main unit, and the setting of the hanging rod 5 makes it convenient for the user to hang curtains, which is convenient for the user to use.

[0048] In this embodiment, the side panels 3 are preferably provided with fixing grooves 311, and the back panel 4 is provided with fixing hooks 41 adapted to the fixing grooves 311. The fixing hooks 41 are engaged with the fixing grooves 311 to fix the back panel 4 and the main unit relative to each other, and prevent the first plug-in portion 24 from being separated from the first plug-in hole 33.

[0049] The bottom plate 2 extends to the front and rear sides of the side plates 3 to form connecting seats 22, and connecting protrusions 23 are provided on the connecting seats 22, and limiting grooves 321 are provided on the front and rear sides of the side plates 3. The connecting seats 22 are inserted into the limiting grooves 321, and the connecting grooves 322 are provided on the side walls of the limiting grooves 321. The setting of the limiting grooves 321 and the connecting seats 22 prevents the bottom plate 2 from tilting upward or downward, which is beneficial to the stable deployment of the main unit, and can prevent the connecting seats 22 from protruding from the sides of the side plates 3, thereby preventing the connecting seats 22 from being bumped and damaged during mobile transportation.

[0050] Preferably, the side panel 3 extends below the first substrate 21 or the second substrate 26 to form a support wall 38, and the support wall 38 abuts against the lower side of the first substrate 21 or the second substrate 26 and prevents the middle part of the bottom plate 2 from bending downward. The setting of the support wall 38 can provide auxiliary support for the first substrate 21 and the second substrate 26 to prevent the middle part of the bottom plate 2 from bending downward, thereby dispersing the force on the first plug-in portion 24 and the first plug-in hole 33 as well as the support protrusion 261 and the support groove 211, avoiding the relative force between the first plug-in portion 24, the first plug-in hole 33, the support protrusion 261 and the support groove 211 due to excessive deformation or even damage, avoiding damage to the bottom plate, and helping to extend the service life of the foldable storage box.

[0051] The side panel 3 includes an L-shaped side panel body 31 and a connecting portion 32, a connecting groove 322 being provided on the connecting portion 32, and the connecting protrusion 23 moves along the connecting groove 322 to move the side panel body 31 to one side of the bottom panel 2, so that the side panel body 31 can be folded and pressed against the bottom panel 2 relative to each other. The L-shaped side panel body 31 and the connecting portion 32 can avoid mutual interference between the side panel body 31 and the bottom panel 2 during the folding process, facilitate the close proximity of the side panel 3 and the bottom panel 2, and help reduce the volume of the foldable storage box after folding, and avoid bending and damage of the side panel 3 and the bottom panel 2 during folding.

[0052] In this embodiment, the first plug hole 33 and the support wall 38 are arranged on a side of the connecting portion 32 close to the bottom plate 2 , and the limiting grooves 321 are arranged at the front and rear ends of the connecting portion 32 .

[0053] The side panel 3 is provided with a positioning protrusion 34, the top panel 1 is provided with a first positioning groove 11 adapted to the positioning protrusion 34, and the side panel 3 is provided with a second elastic hook 35, and the top panel 1 is provided with a second groove 12. The second elastic hook 35 cooperates with the second groove 12 to avoid accidental separation from the first positioning groove 11. The arrangement of the positioning protrusion 34, the first positioning groove 11, the second elastic hook 35 and the second groove 12 facilitates the stable connection between the top panel 1 and the main unit, avoids loose connection between the top panel 1 and the side panel 3 during use, and can prevent the side panel 3 from tilting toward the middle of the foldable storage box.

[0054] The foldable storage box may include only a top plate 1 and a main body unit, or may include at least two main body units, which are stacked vertically in sequence, and the positioning protrusion 34 and the second elastic hook 35 are arranged at the upper end of the side plate 3, and the lower end of the side plate 3 is provided with a second positioning groove 39 and a third groove 391; when the main body units are connected to each other, the positioning protrusion 34 cooperates with the second positioning groove 39, and the second elastic hook 35 cooperates with the third groove 391, and the arrangement of the second positioning groove 39 and the third groove 391 facilitates the stacking of the main body units in sequence, facilitates the flexible assembly of the foldable storage box, and is convenient for users to purchase and assemble according to their needs.

[0055] In the utility model, a plurality of main body units can share a back plate 4, and the user can select curtains of different lengths according to the number of main body units.

[0056] Preferably, the side panels 3 are respectively provided with convex edges 36 and concave portions 37 at the upper and lower ends. When the main units are connected to each other, the convex edges 36 and concave portions 37 on adjacent side panels 3 cooperate with each other and make the connection positions of adjacent side panels 3 staggered in the horizontal direction. The arrangement of the convex edges 36 and concave portions 37 facilitates the stable connection of the side panels 3 of adjacent main units and avoids tilting and deformation of the side panels 3 due to excessive force.

[0057] In this embodiment, the convex edge 36 and the concave portion 37 are respectively arranged on the inner side and the outer side of the side plate 3 , the positioning protrusion 34 is arranged on the convex edge 36 , and the second positioning groove 39 is arranged at the bottom of the concave portion 37 .

[0058] The above embodiments are only preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A foldable storage box, comprising a main body unit, on which a top plate (1) is detachably provided, characterized in that: The main body unit comprises a bottom plate (2), side plates (3) are arranged on both sides of the bottom plate (2), the bottom plate (2) comprises a first base plate (21) and a second base plate (26) respectively connected to the two side plates (3), the first base plate (21) and the second base plate (26) are folded relative to each other so that the two side plates (3) on both sides of the bottom plate (2) can be brought close to each other, and the side plates (3) are respectively detachably connected to the top plate (1) so that the two side plates (3) are relatively fixed, thereby limiting the relative folding of the first base plate (21) and the second base plate (26); A support groove (211) is arranged above the first substrate (21) on a side close to the second substrate (26); the upper side of the second substrate (26) extends toward the first substrate (21) to form a support convex edge (261); the support convex edge (261) is pressed against the support groove (211) so that the first substrate (21) and the second substrate (26) can be stably unfolded; the first substrate (21) is rotatably connected to the second substrate (26) via a hinge rod (214); the hinge rod (214) is arranged at the lower side of the support groove (211); the support convex edge (261) can be turned over toward the upper side of the support groove (211) so that the first substrate (21) and the second substrate (26) can be folded relative to each other.

2. A foldable storage box according to claim 1, characterized in that: The first substrate (21) and the second substrate (26) are respectively provided with a slot portion (212) and a hook portion (262); the hook portion (262) and the slot portion (212) cooperate to keep the first substrate (21) and the second substrate (26) in an unfolded state; and under the action of an external force, the hook portion (262) and the slot portion (212) can cooperate with or disengage from each other.

3. The foldable storage box according to claim 1, characterized in that: The side plate (3) extends below the first substrate (21) or the second substrate (26) to form a support wall (38), which abuts against the lower side of the first substrate (21) or the second substrate (26) and prevents the middle part of the bottom plate (2) from bending downward.

4. A foldable storage box according to claim 1 or 2, characterized in that: The bottom plate (2) and the side plate (3) are respectively provided with a connecting protrusion (23) and a connecting groove (322); the connecting protrusion (23) and the connecting groove (322) cooperate to make the bottom plate (2) and the side plate (3) movably connected and prevent the bottom plate (2) and the side plate (3) from being separated; first plug-in parts (24) are respectively provided on both sides of the bottom plate (2); a first plug-in hole (33) adapted to the first plug-in part (24) is provided on the side of the side plate (3); the first plug-in part (24) and the first plug-in hole (33) cooperate to limit the relative folding of the side plate (3) and the bottom plate (2); the side plate (3) can move toward both sides of the bottom plate (2) and make the first plug-in part (24) separate from the first plug-in hole (33); the side plate (3) is respectively detachably connected to the top plate (1) and limits the side plate (3) from moving toward both sides of the bottom plate (2), so that the first plug-in part (24) and the first plug-in hole (33) remain connected.

5. The foldable storage box according to claim 4, characterized in that: The side panel (3) comprises a side panel body (31) and a connecting portion (32) arranged in an L shape, a connecting groove (322) being arranged on the connecting portion (32), and the connecting protrusion (23) moving along the connecting groove (322) to move the side panel body (31) to one side of the bottom panel (2), so that the side panel body (31) can be folded relative to the bottom panel (2) and pressed against it.

6. The foldable storage box according to claim 4, characterized in that: A first elastic hook (25) is arranged on the side of the first plug-in portion (24), and a first slot (331) is arranged on the side wall of the first plug-in hole (33); the first elastic hook (25) cooperates with the first slot (331) to prevent the first plug-in portion (24) from accidentally disengaging from the first plug-in hole (33).

7. The foldable storage box according to claim 1, characterized in that: The side plate (3) is provided with a positioning protrusion (34), the top plate (1) is provided with a first positioning groove (11) adapted to the positioning protrusion (34), the side plate (3) is provided with a second elastic hook (35), the top plate (1) is provided with a second groove (12), and the second elastic hook (35) cooperates with the second groove (12) to avoid accidental separation from the first positioning groove (11).

8. The foldable storage box according to claim 7, characterized in that: The invention comprises at least two main body units, which are stacked vertically in sequence. The positioning protrusion (34) and the second elastic hook (35) are arranged at the upper end of the side plate (3), and the lower end of the side plate (3) is provided with a second positioning groove (39) and a third groove (391); when the main body units are connected to each other, the positioning protrusion (34) cooperates with the second positioning groove (39), and the second elastic hook (35) cooperates with the third groove (391).

9. The foldable storage box according to claim 8, characterized in that: The upper and lower ends of the side panels (3) are respectively provided with convex edges (36) and concave portions (37); when the main units are connected to each other, the convex edges (36) and concave portions (37) on adjacent side panels (3) cooperate with each other so that the connection positions of the adjacent side panels (3) are staggered in the horizontal direction.

10. The foldable storage box according to claim 1, characterized in that: The bottom plate (2) extends toward the front and rear sides of the side plate (3) to form a connecting seat (22), the connecting seat (22) is provided with a connecting protrusion (23), and the front and rear sides of the side plate (3) are provided with a limiting groove (321), the connecting seat (22) is inserted into the limiting groove (321), and the connecting groove (322) is provided on the side wall of the limiting groove (321).

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