Collapsible container and its outer case

Abstract

This invention discloses a foldable container and its outer casing. The outer casing has a base, a lid, a pair of opposing first side plates and a pair of opposing second side plates foldably connected to the base, with adjacent first and second side plates connected and surrounding the base. The lid is hinged to one of the first side plates via a first hinge. Each first and second side plate is operably flipped inwards or outwards relative to the base. A limiting support is provided on the outer surface of the first side plate hinged to the lid; the limiting support is used to support the first hinge when the lid is flipped to face the outer surface of the hinged first side plate. Compared to the prior art, this foldable container reduces recycling space and transportation costs.

Description

Technical Field

[0001] The embodiments of the present invention relate to logistics products, and in particular to a foldable container and its outer casing. Background Technology

[0002] Due to their strong corrosion resistance, tonne containers are widely used in chemical plants to store highly corrosive, flammable, and volatile liquid chemical raw materials, thus requiring very high safety performance. Currently, tonne containers are all one-piece designs, transported at their maximum volume during both transportation and recycling. Especially during recycling, although the container is empty, its volume remains unchanged, occupying significant transportation space and increasing transportation costs. Summary of the Invention

[0003] The purpose of this invention is to provide a foldable container and its outer casing, which reduces recycling space and transportation costs.

[0004] To solve the above-mentioned technical problems, embodiments of the present invention provide an outer box for a foldable container, the outer box having a base, a lid, a pair of opposing first side plates and a pair of opposing second side plates foldably connected to the base, and adjacent first side plates and second side plates being connected to surround the base, the lid being hinged to one of the first side plates by a first hinge member;

[0005] Each of the first side plates and each of the second side plates is operably flipped relative to the base toward the inside or outside of the outer box; the outer surface of the first side plate hinged to the box cover has a limiting member support; the limiting member support is used to support the first hinge member when the box cover is flipped to be opposite to the outer surface of the first side plate hinged to it.

[0006] The first hinge has a connecting hinge body, a first hinge pin, and a second hinge pin. The first hinge pin connects the hinge body and the lid, and the second hinge pin connects the hinge body and the top of a first side plate.

[0007] In one embodiment, the hinge body has a first connecting segment connected to the first hinge pin, and a second connecting segment extending from the end of the first connecting segment away from the first hinge pin, the end of the second connecting segment away from the first connecting segment being connected to the second hinge pin.

[0008] When the lid is closed, the first connecting section covers the upper surface of the lid, and the second connecting section covers the side wall of the lid;

[0009] When the lid is flipped up to face the outer surface of the first side plate that is hinged to it, the second connecting section is supported by the limiting member on the first side plate.

[0010] In one embodiment, the limiting member is a protrusion connected to the outer surface of the first side plate.

[0011] In one embodiment, the lid has a circumferentially surrounding and raised flange, and the first connecting segment is at least partially recessed to accommodate the flange.

[0012] In one embodiment, when the outer box is in a folded state, each of the first side panels, each of the second side panels, and the box lid are stacked on the base; and the outer edge of the box lid does not extend beyond the range of the base.

[0013] In one embodiment, when the outer box is in a folded state, each of the first side panels, each of the second side panels, and the box lid are stacked on the base; and the outer edges of the first side panels and each of the second side panels do not extend beyond the range of the base.

[0014] In one embodiment, the lid includes: an outer frame and a cover body connected to the outer frame, the cover body having a filling port; the first side plate is hinged to the cover body via the first hinge member.

[0015] In one embodiment, the cover has a protruding abutment on the side opposite to the outer frame, and the abutment is circumferentially arranged.

[0016] In one embodiment, a sealing element is provided on the abutting boss, and a fixing strip is provided on the abutting boss, and the sealing element is fixedly clamped between the abutting boss and the fixing strip.

[0017] In one embodiment, the outer frame is a mesh frame and covers the outer surface of the cover, and the filling port on the cover is disposed opposite to the mesh opening of the mesh frame; the first hinge connects to the cover across the edge of the outer frame.

[0018] In one embodiment, the first edge of the box cover is connected to a first side plate via the first hinge; a locking hook is also provided on the second edge of the box cover opposite to the first edge, and a lock that cooperates with the locking hook is also provided on the other first side plate.

[0019] In one embodiment, each of the first side plates and each of the second side plates are mesh plates.

[0020] In one embodiment, each of the first side plates and each of the second side plates are metal mesh plates.

[0021] An embodiment of the present invention also provides a foldable container, comprising: an outer box as described above, and an inner liner detachably disposed within the outer box, the inner liner having an upward-facing receiving opening; and a lid for sealing the receiving opening of the inner liner.

[0022] Compared to existing technologies, the embodiments of this invention, where the lid is hinged to a first side panel and can be flipped and folded onto the outer surface of the first side panel, allow the lid to fold onto the base when the first and second side panels are folded, thus achieving folding of the outer box, reducing recycling space, and lowering transportation costs. Furthermore, the outer surface of the first side panel hinged to the lid has a limiting support. When the lid is flipped to face the first side panel, the limiting support holds the first hinge, ensuring the lid remains aligned with the first side panel and preventing it from tilting or forming an angle with it. This reduces the overall folded height of the outer box, minimizing the folding space. Additionally, the lid does not extend excessively beyond the base, further saving space after folding. Attached Figure Description

[0023] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0024] Figure 1 This is a schematic diagram of the structure of a foldable container according to an embodiment of the present invention;

[0025] Figure 2 This is an exploded view of a foldable container according to an embodiment of the present invention;

[0026] Figure 3 This is a perspective view of a portion of the outer casing folded according to an embodiment of the present invention;

[0027] Figure 4 yes Figure 3 A sectional view showing the connection relationship between a second side panel and a column in the current state;

[0028] Figure 5 This is a schematic diagram of the folding of the outer box according to an embodiment of the present invention;

[0029] Figure 6 This is a schematic diagram of the stacking of multiple folded outer boxes according to an embodiment of the present invention;

[0030] Figure 7 This is a schematic diagram of multiple nested inner liner units according to an embodiment of the present invention;

[0031] Figure 8 This is a schematic diagram of a stackable foldable container structure according to an embodiment of the present invention;

[0032] Figure 9 This is an exploded view of the lid of the outer box according to an embodiment of the present invention;

[0033] Figure 10 This is an exploded view of the first hinge member in the outer casing according to an embodiment of the present invention. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the various embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, those skilled in the art will understand that many technical details have been presented in the various embodiments of the present invention to enable the reader to better understand this application. However, the technical solutions claimed in this application can be implemented even without these technical details and various changes and modifications based on the following embodiments.

[0035] In the following description, certain specific details are set forth for the purpose of illustrating various disclosed embodiments in order to provide a thorough understanding of the various disclosed embodiments. However, those skilled in the art will recognize that embodiments may be practiced without one or more of these specific details. In other instances, well-known apparatuses, structures, and techniques associated with this application may not have been shown or described in detail to avoid unnecessarily obscuring the description of the embodiments.

[0036] Unless the context requires otherwise, throughout the specification and claims, the word “comprising” and its variations, such as “including” and “having”, shall be understood to have an open, inclusive meaning, that is, to be interpreted as “including, but not limited to”.

[0037] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings to provide a clearer understanding of the purpose, features, and advantages of the present invention. It should be understood that the embodiments shown in the drawings are not intended to limit the scope of the present invention, but are merely illustrative of the essential spirit of the technical solution of the present invention.

[0038] Throughout this specification, references to "an embodiment" or "an embodiment" indicate that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. Therefore, the appearance of "in an embodiment" or "an embodiment" in various places throughout the specification does not necessarily refer to the same embodiment. Furthermore, a particular feature, structure, or characteristic may be combined in any manner in one or more embodiments.

[0039] The singular forms “a” and “the” used in this specification and the appended claims include plural references unless otherwise expressly stated herein. It should be noted that the term “or” is generally used to mean “and / or” unless otherwise expressly stated herein.

[0040] In the following description, in order to clearly demonstrate the structure and working method of the present invention, a number of directional terms will be used. However, terms such as "front", "back", "left", "right", "outside", "inside", "outward", "inward", "up", and "down" should be understood as convenient terms and not as limiting terms.

[0041] Embodiments of the present invention are described below with reference to the accompanying drawings.

[0042] One embodiment of the present invention relates to a foldable container. For example... Figure 1 , Figure 2 , Figure 3 , Figure 5 , Figure 6 , Figure 7 As shown, the foldable container 100 includes: an outer casing 1 and an inner liner 2 detachably disposed within the outer casing 1, the inner liner 2 having an upward-facing receiving opening 20. The outer casing 1 has a base 11, a lid 12 for sealing the receiving opening 20 of the inner liner 2, a pair of opposing first side plates 13 and a pair of opposing second side plates 14 foldably connected to the base 11, with adjacent first side plates 13 and second side plates 14 connected around the base 11. The lid 12 is hinged to the top of one of the first side plates 13 via a first hinge 3. A first edge of the lid 12 is connected to one of the first side plates 13 via the first hinge 3, and a locking hook is also provided on a second edge of the lid 12 opposite to the first edge. A lock that engages with the locking hook is also provided on the other first side plate 13. Each first side plate 13 and each second side plate 14 can be operably flipped inward or outward relative to the base 11 towards the outer casing 1. The lid 12 is operably flipped to the outer surface of the first side panel 13, which is hinged thereto, and is positioned opposite to the outer surface of the first side panel 13. When the outer case 1 is in the folded state, each of the first side panels 13, each of the second side panels 14, and the lid 12 are stacked on the base 11. The base 11 of the outer case 1 in the folded state is operably stacked and docked with the base 11 of the outer case 1 in other folded states.

[0043] In addition, the inner diameter of the top of the inner liner 2 is larger than the outer diameter of the bottom of the inner liner 2.

[0044] As described above, since the inner liner 2 and the outer box 1 are detachably connected, and the lid 12 is hinged to a first side plate 13 and can be flipped and folded onto the outer surface of the first side plate 13, when the first side plate 13 and the second side plate 14 are folded onto the base 11, the lid 12 also folds onto the base 11, thus achieving the folding of the outer box 1. Furthermore, the top inner diameter of the inner liner 2 is larger than the bottom outer diameter of the inner liner 2, allowing multiple inner liners 2 to be stacked. This enables the foldable container 100 to be reusable separately, and the outer box 1 can be folded while the inner liners 2 can be stacked, saving space and reducing transportation costs.

[0045] Furthermore, such as Figure 1 ,3 As shown, the base 11 has a base plate 111 and two pairs of opposing columns 112 and 113 connected to the four corners of the base plate 111, respectively. The columns can be metal columns. The base plate 111 is rectangular, and the four columns are located at the four corners of the rectangle. Each second side plate 14 and each first side plate 13 is clamped between two different columns and hinged to two adjacent columns. As shown in the figure, a first side plate 13 is clamped between a column 112 and a column 113, and a second side plate 14 is clamped between two columns 112.

[0046] like Figure 6 As shown, when the outer box 1 is folded, each first side plate 13 and each second side plate 14 is bent and connected to its corresponding upright, and the top of the upright is operably aligned with the bottom of the upright of the other outer box 1 in the folded state. Specifically, the bottom of the upright has a groove, and the outer diameter of the top of the upright is smaller than the inner diameter of the groove. The two folded outer boxes 1 can be stacked, and the top of the upright in the upper outer box 1 can be inserted into the groove of the upright in the lower outer box 1.

[0047] Furthermore, the structures of columns 112 and 113 are identical. The following explanation uses column 112 as an example. Figure 3 , Figure 4 and Figure 5As shown, the column has a column body and a support foot 10 with a groove. The column body and the support foot 10 are vertically connected. The first side plate 13 and the second side plate 14 are both hinged to the column body. The top of the column 112 has an upward-facing slot 114. The side prism 130 of the first side plate 13 has a protrusion 131 that can be operably engaged with the slot 114. The column has a slide rail 115 extending from top to bottom. The side prism 130 of the first side plate 13 can be operably slid along the slide rail 115. The slot 114 is opened at the top of the wall of the slide rail 115 and has an upward-facing opening. The wall of the slide rail 115 has a long groove 116 extending from top to bottom. The side prism 132 of the first side plate 13 has an insert 133 that can be operably slid along the long groove 116. When the first side plate 13 is upright, the insert 133 is engaged at the bottom of the long groove 116, and the protrusion 131 is engaged in the slot 114. When the first side plate 13 needs to be folded, the bolt 6 locking the first side plate 13 and the second side plate 14 is pulled open. First, the first side plate 13 is raised, the insert 133 slides upward in the long groove, the protrusion 131 disengages from the slot 114, and then the first side plate 13 is bent inward into the outer box 1, thus achieving the folding of the first side plate 13. Each second side plate 14 is hinged to the corresponding column through the hinge shaft 4. The second side plate 14 rotates around the axis of the hinge shaft 4 and folds towards the base 11. The lower ends of the columns 112 and 113 have hinge holes, which are closer to the base plate 111 than the long groove 116. The hinge shaft is connected to the hinge hole. When folding the outer box 1, first fold the two second side panels 14, then fold the two first side panels 13, so that the second side panels 14 are located below the first side panels 13.

[0048] In addition, such as Figure 5 As shown, the first side panel 13 and the second side panel 14 after folding are separated from the column to form an interval area 70, leaving a placement area for the columns of other outer boxes 1. As shown in the figure, the column 112 has a first upright plate 1121 and a second upright plate 1122 forming an angle with the first upright plate 1121. The bottom of the first upright plate 1121 and the second upright plate 1122 are inserted into the support foot 10. The bottom of the support foot 10 is provided with a groove. The edge where the first upright plate 1121 and the second upright plate 1122 are connected together forms the side edge of the column. A sliding groove is formed between the first upright plate 1121 and the second upright plate 1122. The side of the first upright plate 1121 and the second upright plate 1122 that are opposite to each other has an inclined surface. The two inclined surfaces gradually move away from the side edge from top to bottom. As a result, the top size of the first upright plate 1121 and the second upright plate 1122 is small and far away from the first side plate 13 and the second side plate 14. They can be inserted into the support foot 10 of other outer boxes 1 and also provide space for the support foot 10 of other outer boxes 1.

[0049] In addition, such as Figure 8As shown, when the outer box 1 is not folded, the two outer boxes 1 can also be stacked. The outer diameter of the top of the side prism 130 of the first side plate 13 is smaller than the inner diameter of the groove, and the side prism 130 of the first side plate 13 can be inserted into the groove. That is, when the two outer boxes 1 are stacked, the side prism 130 of the first side plate 13 is inserted into the groove at the bottom of the support foot 10. It can be understood that in other embodiments, the top of the side prism of the first side plate 13 may also be provided with a recessed opening, and when stacked, the support foot 10 is inserted into the recessed opening.

[0050] The second embodiment of the present invention relates to an outer casing of a foldable container 100, which is the outer casing 1 in the first embodiment. Figure 3 , Figure 4 , Figure 10 As shown, a limiting member 139 supports the outer surface of the first side plate 13 that is hinged to the lid 12. The limiting member 139 supports the first hinge member 3 when the lid 12 is flipped up to be positioned opposite the outer surface of the first side plate 13 that is hinged to it.

[0051] As can be seen from the above, the outer surface of the first side panel 13 is supported by a limiting member 139. When the lid 12 is flipped over and positioned opposite the first side panel 13, the limiting member 139 supports the first hinge member 3, thus allowing the lid 12 to remain opposite the first side panel 13. The lid 12 will not tilt or lift up to form an angle with the first side panel 13, thereby reducing the overall height of the folded outer box 1 after folding, reducing the folding space of the entire box. Furthermore, the lid 12 will not extend excessively beyond the base 11, making the folded outer box 1 more space-saving.

[0052] Specifically, Figure 3 , Figure 4 , Figure 10 As shown, the first hinge 3 has a connecting hinge body 31, a first hinge pin 32 and a second hinge pin 33. The first hinge pin 32 connects the hinge body 31 and the box cover 12, and the second hinge pin 33 connects the hinge body 31 and the top of a first side plate 13.

[0053] Furthermore, Figure 3 , Figure 4 , Figure 10As shown, the hinge body 31 has a first connecting section 311 connected to the first hinge pin 32, and a second connecting section 312 extending from the end of the first connecting section 311 away from the first hinge pin 32. The end of the second connecting section 312 away from the first connecting section 311 is connected to the second hinge pin 33. When the lid 12 is closed, the first connecting section 311 covers the upper surface of the lid 12, and the second connecting section 312 covers the side wall of the lid 12. When the lid 12 is flipped up to face the outer surface of the first side plate 13 to which it is hinged, the second connecting section 312 is supported by the limiting member 139 on the first side plate 13. Through the arrangement of the first connecting section 311 and the second connecting section 312, the hinge body 31 fits the shape of the lid 12 and the first side plate 13 better, and the overall fit of the outer box 1 is higher.

[0054] Furthermore, Figure 3 , Figure 4 , Figure 10 As shown, the limiting member 139 is a protrusion connected to the outer surface of the first side plate 13.

[0055] Furthermore, Figure 3 , Figure 4 , Figure 10 As shown, the lid 12 has a circumferentially raised protruding edge 1220 around its perimeter. The first connecting section 311 is at least partially recessed to accommodate the protruding edge 1220. After the lid 12 is flipped over, the second connecting section 312 is stably supported by the protrusion. The first connecting section 311 is located in the area surrounded by the protruding edge 1220 of the lid 12. The first connecting section 311 does not occupy too much of the outer surface area of ​​the lid 12, so that the lid 12 is closer to the first side panel 13 after flipping over, and the overall height of the folded outer box 1 is smaller.

[0056] in addition, Figure 3 , Figure 4 , Figure 5 As shown, when the outer box 1 is folded, each of the first side panels 13, each of the second side panels 14 and the box cover 12 are stacked on the base 11, and the outer edge of the box cover 12 does not exceed the range of the base 11. The folded outer box 1 will occupy less space.

[0057] Furthermore, Figure 3 , Figure 4 , Figure 10 As shown, when the outer box 1 is in the folded state, each of the first side panels 13, each of the second side panels 14 and the box cover 12 are stacked on the base 11, and the outer edges of the first side panels 13 and each of the second side panels 14 do not extend beyond the range of the base 11.

[0058] Furthermore, such as Figure 9As shown, the lid 12 includes: an outer frame 121 and a lid body 122 connected to the outer frame 121. The lid body 122 is used to seal the receiving opening 20 of the inner liner 2. A filling port 120 is provided on the lid body 122, through which the filling port 120 leads into the inner liner 2. The filling port 120 has a cap, which can be a bottle neck structure. The cap is screwed onto the filling port 120 by threads; other structures are also possible. The lid body 122 is used to seal the receiving opening 20 of the inner liner 2. The first side plate 13 is hinged to the lid body 122 via a first hinge 3.

[0059] Additionally, the outer frame 121 is a mesh frame that covers the outer surface of the cover 122, and the filling port 120 on the cover 122 is positioned opposite to the mesh openings of the mesh frame. A first hinge member connects the cover 122 across the edge of the outer frame 121.

[0060] Specifically, such as Figure 2 , Figure 9 As shown, the cover 122 has a protruding abutment 1221 on the side opposite to the outer frame 121, and the abutment 1221 is circumferentially arranged, abutting against the top surface of the inner liner 2. The receiving opening 20 of the inner liner 2 is rectangular and is formed by surrounding the top surface of the inner liner 2. The abutment 1221 abutting against the top surface of the inner liner 2 can seal the receiving opening 20. In other embodiments, the receiving opening 20 may also be of other shapes, with the abutment 1221 matching the top surface of the inner liner 2.

[0061] Furthermore, such as Figure 9 As shown, a sealing element 1222 is provided on the abutment boss 1221. The sealing element 1222 is used to clamp between the abutment boss 1221 and the top surface of the inner liner 2 when the abutment boss 1221 abuts against the top surface of the inner liner 2. The sealing element 1222 can be a rubber gasket or other sealing sheet. The sealing element 1222 can be glued to the abutment boss 1221, or it can have a protrusion on it to fit into the abutment boss 1221. In this embodiment, a fixing strip 1223 is provided. The fixing strip 1223, the sealing strip, and the abutment boss 1221 are connected by screws or other locking mechanisms. The sealing element 1222 is clamped and fixed between the fixing strip 1223 and the abutment boss 1221. The inner ring side of the seal 1222 is exposed outside the fixing strip 1223 and abuts against the top surface of the inner liner 2, so that the seal 1222 is more stably fixed while the inner liner 2 can be well sealed.

[0062] like Figure 2As shown, the inner liner 2 has two pairs of opposing sidewalls 21 and a bottom 22. The two pairs of opposing sidewalls 21 form the inner cavity of the inner liner 2 around the bottom 22. One of the sidewalls 21 has a recessed area 23 that faces inward toward the inner liner 2. The discharge port 24 is located within the recessed area 23, preventing the discharge port 24 from protruding from the sidewall 21 of the inner liner 2. This facilitates the placement of the inner liner 2 into the outer casing 1 and allows the inner liners 2 to be stacked on top of each other. A valve is provided at the discharge port 24, which can be used to open or close the discharge port. The sidewall 21 with the recessed area 23 is a vertical wall surface, while the other sidewalls 21 are sloping walls that converge toward the bottom 22 of the inner liner 2. In other words, the discharge port 24 is located on a vertical wall surface, making it easier to contact the discharge port 24 during operation. The remaining sidewalls 21 of the inner liner are sloping surfaces, allowing multiple inner liners 2 to be stacked on top of each other after being removed from the outer casing 1. In other embodiments, all four sidewalls 21 may be sloping surfaces that converge toward the bottom 22 of the inner liner 2.

[0063] In this embodiment, the inner liner 2 is taken as a rectangle. In other embodiments, the inner liner 2 may also be cylindrical or other shapes.

[0064] Furthermore, such as Figure 1 As shown, each first side plate 13 is a long side plate, and each second side plate 14 is a short side plate. A flip cover 5 is disposed on one of the second side plates 14, and the flip cover 5 is connected to the base 11 by a latch 7. The flip cover 5 can be used to cover the discharge port 24, and when the flip cover 5 is opened, the discharge port 24 can be directly accessed. In other embodiments, the inner liner 2 has a discharge port 24, and at least one of the first side plates 13 and the second side plates 14 is provided with a flip cover, with the discharge port 24 facing the flip cover and opposite to it.

[0065] In addition, such as Figure 1 As shown, each first side panel 13 and each second side panel 14 is a mesh panel. Preferably, each first side panel 13 and each second side panel 14 can be a metal mesh panel. The uprights 112 and 113 can be metal uprights. The mesh panel structure makes this container lighter than a ton container.

[0066] Furthermore, such as Figure 1 As shown, each second side panel 14 has an upper panel 141 and a lower panel 142 from top to bottom. The lower edge of the upper panel 141 and the upper edge of the lower panel 142 are hinged together by a second hinge 140. The upper panel is connected to the adjacent first side panel 13 by a locking bolt 6. The upper panel 141 can be operably flipped outwards from the base 11 or inwards from the outer casing 1. Thus, when installing the inner liner 2, the upper panel 141 can be pried open outwards from the outer casing 1, allowing the inner liner 2 to be placed inside the outer casing 1.

[0067] Furthermore, the top of the inner liner 2 is snapped together with the upper prisms of each upper plate 141 and the upper prisms of each first side plate 13, thereby fixing the inner liner 2.

[0068] It is not difficult to see that this embodiment can be implemented in conjunction with the first embodiment. The relevant technical details mentioned in the first embodiment are still valid in this embodiment, and will not be repeated here to avoid repetition. Correspondingly, the relevant technical details mentioned in this embodiment can also be applied to the first embodiment.

[0069] The preferred embodiments of the present invention have been described in detail above, but it should be understood that, if necessary, aspects of the embodiments can be modified to utilize aspects, features, and concepts from various patents, applications, and publications to provide other embodiments.

[0070] In light of the detailed description above, these and other changes can be made to the embodiments. Generally, the terminology used in the claims should not be considered limited to the specific embodiments disclosed in the specification and claims, but should be understood to include all possible embodiments together with the full scope of equivalents enjoyed by these claims.

[0071] Those skilled in the art will understand that the above embodiments are specific examples of implementing the present invention, and in practical applications, various changes in form and detail may be made without departing from the spirit and scope of the present invention.

Claims

1. An outer case of a foldable container, characterized by, The outer casing has a base, a lid, a pair of opposing first side plates and a pair of opposing second side plates foldably connected to the base, and adjacent first side plates and second side plates are connected around the base. The lid is hinged to one of the first side plates by a first hinge. Each of the first side plates and each of the second side plates is operable to flip relative to the base toward the inside or outside of the outer box; the outer surface of the first side plate that is hinged to the box cover has a limiting member support; the limiting member support is used to support the first hinge member when the box cover is flipped to be opposite to the outer surface of the first side plate that is hinged to it. The first hinge has a connecting hinge body, a first hinge pin, and a second hinge pin. The first hinge pin connects the hinge body and the box cover, and the second hinge pin connects the hinge body and the top of a first side plate. The hinge body has a first connecting segment connected to the first hinge pin, and a second connecting segment extending from the end of the first connecting segment away from the first hinge pin, the end of the second connecting segment away from the first connecting segment being connected to the second hinge pin. When the lid is closed, the first connecting section covers the upper surface of the lid, and the second connecting section covers the side wall of the lid; When the lid is flipped up to face the outer surface of the first side plate that is hinged to it, the second connecting section is supported by the limiting member on the first side plate.

2. The outer casing of the foldable container according to claim 1, characterized in that, The limiting member is a protrusion connected to the outer surface of the first side plate.

3. The outer casing of the foldable container according to claim 1, characterized in that, The lid has a circumferentially surrounding and raised flange, and the first connecting section is at least partially recessed to accommodate the flange.

4. The outer casing of the foldable container according to claim 1, characterized in that, When the outer box is folded, each of the first side panels, each of the second side panels, and the box lid are stacked on the base; and the outer edge of the box lid does not extend beyond the range of the base.

5. The outer casing of the foldable container according to claim 1, characterized in that, When the outer box is folded, each of the first side panels, each of the second side panels, and the box lid are stacked on the base; and the outer edges of the first side panels and each of the second side panels do not extend beyond the range of the base.

6. The outer casing of the foldable container according to claim 1, characterized in that, The box lid includes: an outer frame and a lid body connected to the outer frame, the lid body having a filling port; the first side plate is hinged to the lid body via the first hinge member.

7. The outer casing of the foldable container according to claim 6, characterized in that, The cover has a protruding abutment on the side opposite to the outer frame, and the abutment is arranged circumferentially.

8. The outer casing of the foldable container according to claim 7, characterized in that, A sealing element is provided on the abutment protrusion, and a fixing strip is provided on the abutment protrusion, and the sealing element is fixedly clamped between the abutment protrusion and the fixing strip.

9. The outer casing of the foldable container according to claim 6, characterized in that, The outer frame is a mesh frame and covers the outer surface of the cover. The filling port on the cover is arranged opposite to the mesh hole of the mesh frame. The first hinge connects to the cover by crossing the edge of the outer frame.

10. The outer casing of the foldable container according to claim 1, characterized in that, The first edge of the lid is connected to a first side plate via the first hinge; a locking hook is also provided on the second edge of the lid opposite to the first edge, and a lock that cooperates with the locking hook is also provided on the other first side plate.

11. The outer casing of the foldable container according to claim 1, characterized in that, Each of the first side panels and each of the second side panels are mesh panels.

12. The outer casing of the foldable container according to claim 11, characterized in that, Each of the first side panels and each of the second side panels are metal mesh panels.

13. A foldable container, characterized in that, include: The outer casing as described in any one of claims 1-12, and the inner liner detachably disposed within the outer casing, the inner liner having an upward-facing receiving opening; The lid is used to seal the opening of the inner liner.

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