Foldable storage box

Abstract

The utility model provides a foldable storage box, and belongs to the technical field of household articles. The foldable storage box solves the problems that an existing foldable storage box is long in manufacturing period and high in manufacturing cost. The foldable storage box comprises a group of integrated box bodies and a rectangular bottom ring, the rigid bottom wall comprises a flat plate part and a vertical part; the rigid side wall is provided with a bearing part, and the vertical part is connected with the bearing part through a flexible connecting strip; the bottom ring is arranged on the rigid bottom wall in a sleeving manner, the four vertical parts are fixedly connected with the bottom ring, and a bearing area is arranged on the top surface of the bottom ring; when the box body is in an unfolded state, the adjacent rigid side walls are further fixedly connected through detachable connecting structures, and the bearing parts of the rigid side walls make contact with the bearing area of the bottom ring. According to the integrated box body, the number of parts of the foldable storage box is reduced, the manufacturing cost is reduced during batch manufacturing, the problem that the side walls are separated from the bottom wall when the foldable storage box is in a folded state is solved, and operation convenience is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of household articles and relates to a storage box, in particular to a foldable storage box. Background Art

[0002] As people's living spaces continue to evolve and their storage and organization needs become increasingly sophisticated, storage boxes have become indispensable in many settings, including homes, offices, and travel. Traditional storage boxes typically feature fixed structures, occupying a large amount of storage space when not in use, making them inconvenient to carry and store. This problem is becoming increasingly prominent in modern life, where space is a concern, prompting people to seek more flexible and space-efficient storage solutions.

[0003] In the relevant technical field, a US patent document discloses a storage device [Publication No. US12103576B2], which attempts to solve the problem of storage space occupation to a certain extent. The storage box described in the patent adopts a foldable structural design, and through a specific hinge connection method, certain panels of the box body can be folded up under specific operations, thereby reducing the volume of the storage box when not in use. However, this design still has some defects and shortcomings. For example, many parts need to be manufactured independently and then assembled according to the design structure, which leads to a long manufacturing cycle and high manufacturing costs. For example, in the folded state and during transportation, the hinge connection is separated due to bumps and vibrations. It is an objective fact that some consumers will not reassemble it, resulting in the product being scrapped. In summary, the market urgently needs a new type of foldable storage box that can overcome the above-mentioned defects, while ensuring structural stability and convenient operation, and achieving good cost control. Summary of the Invention

[0004] The utility model provides a foldable storage box. The technical problem to be solved by the utility model is how to reduce the number of parts of the foldable storage box to reduce the manufacturing cost while ensuring structural stability and convenient operation.

[0005] The technical problem to be solved by the present invention can be achieved through the following technical solutions: a foldable storage box includes a set of integrated box bodies and a rectangular bottom ring; the box body is made of resin material, and the box body includes a rigid bottom wall and four rigid side walls; the rigid bottom wall includes a flat plate part and four upright parts located outside the flat plate part; the rigid side wall has a load-bearing part, and the four upright parts are arranged in a one-to-one correspondence with the four rigid side walls, and the upright parts and the load-bearing parts are connected by flexible connecting strips; the bottom ring is sleeved on the rigid bottom wall, and the four upright parts are fixedly connected to the bottom ring, and the top surface of the bottom ring has a load-bearing area corresponding to the load-bearing parts in the four rigid side walls; the rigid side wall swings relative to the rigid bottom wall to enable the box body to switch between an expanded state and a folded state; when the rigid side wall swings relative to the rigid bottom wall, the flexible connecting strip produces plastic deformation; when the box body is in the expanded state, adjacent rigid side walls are also fixedly connected by a detachable connecting structure, and the load-bearing part of the rigid side wall is in contact with the load-bearing area of ​​the bottom ring.

[0006] The box body is a one-piece structure made of resin material, thus being formed in a single step by injection molding. During the injection molding process, the rigid side walls are arranged parallel to the rigid bottom wall, and the rigid side walls are located outside the rigid bottom wall. The rigid bottom wall and rigid side walls are generally thicker than the flexible connecting strip. Reinforcing ribs are provided on the rigid bottom wall and rigid side walls, and thickness-reducing grooves are provided on the flexible connecting strip. This makes the rigid bottom wall and rigid side walls less susceptible to deformation, while the flexible connecting strip can bend and deform in a set area.

[0007] Compared with the existing technology, the integrated box body not only reduces the number of parts of the foldable storage box, thereby reducing manufacturing costs during mass production, but also eliminates the problem of separation between the side wall and the bottom wall of the foldable storage box when it is in a folded state, thereby ensuring ease of operation.

[0008] The foldable storage box uses a bottom ring to reinforce the rigid bottom wall, increasing its ability to support the weight of items placed inside. The bottom ring, with its lower surface lower than the bottom of the rigid bottom wall and provided with foot mounting holes, provides a greater load capacity and improved stability when placed on the ground or with feet mounted on the bottom ring, compared to placing the box on the ground or with feet mounted on the rigid bottom wall.

[0009] When the foldable storage box is in the unfolded state, the bearing portion of the rigid side wall is placed on the bearing area of ​​the bottom ring, which significantly improves the vertical bearing capacity of the rigid side wall and ensures that the foldable storage box can still be stacked in the unfolded state.

[0010] In the above-mentioned foldable storage box, when the box body is in the unfolded state, the rigid side walls are located on the outside of the rigid bottom wall, an annular concave shoulder is formed between the load-bearing portion and the upright portion, and the bottom ring is located in the annular concave shoulder; this structure not only makes the structure of the foldable storage box more stable when in the unfolded state, but also makes the appearance of the foldable storage box flatter.

[0011] In the above-mentioned foldable storage box, the fixed connection structure between the bottom ring and the upright portion of the rigid bottom wall is composed of a tapered matching structure between the upright portion and the inner side surface of the bottom ring and a hook connection structure between the upright portion and the bottom ring;

[0012] Or the fixed connection structure between the bottom ring and the upright portion of the rigid bottom wall is an adhesive connection structure, a welding connection structure, or a fastener connection structure.

[0013] In the above-mentioned foldable storage box, the top of each of the rigid side walls is a strip-shaped plug-in portion; a bottom ring is provided with a bottom ring plug-in groove matching the plug-in portion; when the foldable storage boxes are stacked, the plug-in portion of the rigid side wall located in the lower foldable storage box is embedded in the bottom ring plug-in groove of the bottom ring located in the upper foldable storage box; this structure significantly improves the stacking stability.

[0014] In the above-mentioned foldable storage box, a buckle is rotatably connected to the rigid side wall, and the bottom ring has a bottom ring buckling ear that cooperates with the buckle; when the foldable storage boxes are stacked, the buckle in the lower foldable storage box and the bottom ring buckling ear of the upper foldable storage box form a buckle connection; this structure further improves the stacking stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the foldable storage box in the unfolded state.

[0016] Figure 2 It is a schematic diagram of the main structure of the foldable storage box in the unfolded state.

[0017] Figure 3 yes Figure 2 Schematic diagram of the cross-sectional structure of AA.

[0018] Figure 4 yes Figure 2 Schematic diagram of the cross-sectional structure of BB.

[0019] Figure 5 yes Figure 3 A partial enlarged view of point E in the middle.

[0020] Figure 6 yes Figure 3 A partial enlarged view of point F in the middle.

[0021] Figure 7 yes Figure 4 A partial enlarged view of point G in the middle.

[0022] Figure 8 yes Figure 4 A partial enlarged view of point H in the middle.

[0023] Figure 9 yes Figure 3 Schematic diagram of the cross-sectional structure of CC.

[0024] Figure 10 yes Figure 3 Schematic diagram of the cross-sectional structure of DD.

[0025] Figure 11 yes Figure 9 A partial enlarged view of point J in the middle.

[0026] Figure 12 yes Figure 9 A partial enlarged view of point K in the middle.

[0027] Figure 13 yes Figure 10 A partial enlarged view of point M in the middle.

[0028] Figure 14 yes Figure 10 A local enlarged view of point N in the middle.

[0029] Figure 15 This is a schematic diagram of the three-dimensional structure of the box in the injection molding state.

[0030] Figure 16 This is an exploded view of the foldable storage box in the expanded state.

[0031] Figure 17 yes Figure 15 A partial enlarged view of point P in the middle.

[0032] Figure 18 yes Figure 16 A partial enlarged view of the middle Q.

[0033] Figure 19 It is a schematic diagram of the three-dimensional structure of the foldable storage box in a folded state.

[0034] Figure 20 It is a schematic diagram of the three-dimensional structure of the stackable foldable storage cabinet in the unfolded state.

[0035] In the figure, 10 is a foldable storage box; 20 is a top cover; 30 is a buckle; 40 is a door; 1 is a box body; 1a is a rigid bottom wall; 1a1 is a flat plate portion; 1a2 is a vertical portion; 1a3 is a reinforcing rib; 1a4 is a slot; 1b is a rigid side wall; 1b1 is a decorative portion; 1b2 is a load-bearing portion; 1b3 is a plug-in portion; 1c is a flexible connecting strip; 1c1 is a thickness-reducing groove; 1d is an annular shoulder; 2 is a bottom ring; 2a is an anti-slip hook portion; 2b is a load-bearing area; 2c is a support leg mounting hole; 2d is a bottom ring plug-in slot; 2e is a bottom ring buckle ear portion. DETAILED DESCRIPTION

[0036] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0037] like Figures 1 to 19 As shown, a foldable storage box 10 includes an integrated box body 1 and a rectangular bottom ring 2 .

[0038] like Figure 15 and Figure 16 As shown, the box body 1 is made of resin material and includes a rigid bottom wall 1a, four rigid side walls 1b, and four sets of flexible connecting strips 1c. The rigid bottom wall 1a includes a flat plate portion 1a1 and four upright portions 1a2 located outside the flat plate portion 1a1. Reinforcing ribs 1a3 are provided on the bottom surface of the flat plate portion 1a1. The wall thickness of the rigid bottom wall 1a is generally greater than 1.2 mm, making it less susceptible to deformation. The rigid side walls 1b include a decorative portion 1b1 and a load-bearing portion 1b2 located outside the decorative portion 1b1. The wall thickness of the rigid side walls 1b is generally greater than 1.2 mm, making it less susceptible to deformation. The flexible connecting strips 1c are thinner than the rigid bottom wall 1a and rigid side walls 1b. They are provided with a thickness-reducing groove 1c1. The thickness of the thinnest part of the flexible connecting strip 1c is generally 0.25 mm to 0.5 mm, so that the flexible connecting strip 1c preferentially deforms in the area of ​​the thickness-reducing groove 1c1.

[0039] The box body 1 is formed by injection molding in one step. The state of the box body 1 during injection molding is as follows: Figure 15 As shown, the rigid side wall 1b of the box body 1 is arranged in parallel with the rigid bottom wall 1a, and the rigid side wall 1b is located outside the rigid bottom wall 1a. Figure 19 As shown, when the box body 1 is in the folded state, the rigid side walls 1b of the box body 1 are arranged parallel to the rigid bottom wall 1a, and the rigid side walls 1b are located directly above the rigid bottom wall 1a. The swinging of the rigid side walls 1b relative to the rigid bottom wall 1a enables the box body 1 to switch from the injection-molded state to the unfolded state or the folded state, and vice versa. When the rigid side walls 1b swing relative to the rigid bottom wall 1a, the flexible connecting strips 1c undergo plastic deformation.

[0040] When the box 1 is in the expanded state, the rigid sidewalls 1b are positioned outside the rigid bottom wall 1a, forming an annular shoulder 1d between the load-bearing portion 1b2 and the upright portion 1a2. The bottom ring 2 is sleeved onto the rigid bottom wall 1a, positioned within the annular shoulder 1d. The four upright portions 1a2 are fixedly connected to the bottom ring 2. The accompanying drawings in the specification illustrate a fixed connection structure between the bottom ring 2 and the rigid bottom wall 1a, including a tapered mating structure between the upright portion 1a2 and the inner side surface of the bottom ring 2, and a connection structure between the upright portion 1a2 and the bottom ring 2, which includes an anti-slip hook portion 2a. Specifically, the upright portion 1a2 is provided with a slot 1a4, and the bottom ring 2 has an anti-slip hook portion 2a. When the bottom ring 2 is inserted upward onto the rigid bottom wall 1a and the anti-slip hook portion 2a is embedded in the slot 1a4, the outer side surface of the upright portion 1a2 contacts the inner side surface of the bottom ring 2, restricting upward movement of the bottom ring 2 relative to the rigid bottom wall 1a, while the anti-slip hook portion 2a restricts downward movement of the bottom ring 2 relative to the rigid bottom wall 1a. The above-described fixed connection structure has the advantages of being simple in structure and easy to assemble. Depending on the actual situation, the fixed connection structure between the bottom ring 2 and the rigid bottom wall 1a can also be connected by adhesive bonding, welding, or fasteners.

[0041] The top surface of the bottom ring 2 has a load-bearing area 2b that corresponds one-to-one to the load-bearing parts 1b2 in the four rigid side walls 1b; when the box body 1 is in the expanded state, the adjacent rigid side walls 1b are also fixedly connected by a detachable connecting structure, and the load-bearing part 1b2 of the rigid side wall 1b is in contact with the load-bearing area 2b of the bottom ring 2.

[0042] The bottom surface of the bottom ring 2 is lower than the bottom surface of the rigid bottom wall 1a. The bottom ring 2 is provided with support leg mounting holes 2c, so that the foldable storage box 10 can be placed on the ground through the bottom surface of the bottom ring 2 or by installing support legs.

[0043] like Figures 1 to 20 As shown, the top of each rigid side wall 1b is a strip-shaped plug-in portion 1b3; the bottom ring 2 is provided with a bottom ring plug-in slot 2d that matches the plug-in portion 1b3. The rigid side walls 1b are designated as large rigid side walls and small rigid side walls according to their area. Each small rigid side wall is rotatably connected to a buckle 30, and the bottom ring 2 has a bottom ring buckle ear portion 2e that mates with the buckle 30. Multiple foldable storage boxes 10 can be stacked to form a storage cabinet, with the plug-in portion 1b3 of the rigid side wall 1b in the lower foldable storage box 10 inserted into the bottom ring plug-in slot 2d of the bottom ring 2 in the upper foldable storage box 10, and the buckle 30 in the lower foldable storage box 10 and the bottom ring buckle ear portion 2e of the bottom ring 2 in the upper foldable storage box 10 forming a buckle connection.

[0044] A top cover 20 is provided at the open end of the storage box. The top cover 20 has a top cover 20 insertion slot that matches the insertion portion 1b3. The top cover 20 has a top cover 20 buckle 30 buckle-engaging ear. The insertion portion 1b3 fits into the top cover 20 insertion slot, and the buckle 30 and the top cover 20 buckle 30 buckle-engage the buckle 30, making the foldable storage box 10 more practical. Providing an access opening on the rigid side wall of the storage box and installing a door 40 for covering the access opening also make the foldable storage box 10 more practical.

Claims

1. A foldable storage box, characterized in that: The invention comprises an integrated box body (1) and a rectangular bottom ring (2); the box body (1) is made of resin material, and the box body (1) comprises a rigid bottom wall (1a) and four rigid side walls (1b); the rigid bottom wall (1a) comprises a flat plate portion (1a1) and four upright portions (1a2) located outside the flat plate portion (1a1); the rigid side wall (1b) has a bearing portion (1b2), and the four upright portions (1a2) are arranged in a one-to-one correspondence with the four rigid side walls (1b), and the upright portions (1a2) and the bearing portion (1b2) are connected by a flexible connecting strip (1c); the bottom ring (2) is sleeved on the rigid bottom wall (1a), and the four upright portions (1a2) are arranged on the outer periphery of the flat plate portion (1a1). 2) are fixedly connected to the bottom ring (2), and the top surface of the bottom ring (2) has a bearing area (2b) corresponding to the bearing parts (1b2) in the four rigid side walls (1b); the rigid side walls (1b) swing relative to the rigid bottom wall (1a) to enable the box (1) to switch between the unfolded state and the folded state; when the rigid side walls (1b) swing relative to the rigid bottom wall (1a), the flexible connecting strip (1c) undergoes plastic deformation; when the box (1) is in the unfolded state, the adjacent rigid side walls (1b) are also fixedly connected by a detachable connecting structure, and the bearing parts (1b2) of the rigid side walls (1b) are in contact with the bearing area (2b) of the bottom ring (2).

2. The foldable storage box according to claim 1, characterized in that: A thickness-reducing groove (1c1) is provided on the flexible connecting strip (1c).

3. The foldable storage box according to claim 1, characterized in that: The box body (1) is formed by injection molding in one step. During the injection molding of the box body (1), the rigid side wall (1b) and the rigid bottom wall (1a) are arranged in parallel, and the rigid side wall (1b) is located outside the rigid bottom wall (1a).

4. The foldable storage box according to claim 1, wherein: When the box body (1) is in an unfolded state, the rigid side wall (1b) is located outside the rigid bottom wall (1a), an annular concave shoulder (1d) is formed between the bearing portion (1b2) and the upright portion (1a2), and the bottom ring (2) is located inside the annular concave shoulder (1d).

5. The foldable storage box according to claim 1, 2, 3 or 4, characterized in that: The fixed connection structure between the bottom ring (2) and the upright portion (1a2) of the rigid bottom wall (1a) comprises a matching structure of the upright portion (1a2) and the inner side conical surface of the bottom ring (2) and a connection structure of the upright portion (1a2) and the anti-slip hook portion (2a) of the bottom ring (2); Or the fixed connection structure between the bottom ring (2) and the upright portion (1a2) of the rigid bottom wall (1a) is an adhesive connection structure, a welding connection structure, or a fastener connection structure.

6. The foldable storage box according to claim 1, 2, 3 or 4, characterized in that: The bottom surface of the bottom ring (2) is lower than the bottom surface of the rigid bottom wall (1a), and a support leg mounting hole (2c) is provided on the bottom ring (2).

7. The foldable storage box according to claim 1, 2, 3 or 4, characterized in that: The top of each rigid side wall (1b) is a strip-shaped plug-in portion (1b3); a bottom ring (2) is provided with a bottom ring plug-in groove (2d) matching the plug-in portion (1b3); when the foldable storage boxes are stacked, the plug-in portion (1b3) of the rigid side wall (1b) located in the lower foldable storage box is embedded in the bottom ring (2) in the upper foldable storage box.

8. The foldable storage box according to claim 7, characterized in that: The rigid side wall (1b) is rotatably connected with a buckle (30), and the bottom ring (2) has a bottom ring buckling ear (2e) that matches the buckle (30); when the foldable storage boxes are stacked, the buckle (30) in the lower foldable storage box and the bottom ring buckling ear (2e) in the upper foldable storage box form a buckle connection.

Images