Closable container

Abstract

The utility model relates to a closable container which comprises a container body and a box cover, the container body is composed of a base and side plates, the box cover is installed at an opening of the container in a matched mode, the closable container further comprises a self-locking mechanism, the self-locking mechanism is arranged in the box cover, and the self-locking mechanism comprises a lock catch mechanism and a driving assembly. The lock catch mechanism is provided with at least one telescopic spring bolt, and the spring bolt partially extends out of the edge of the box cover in the initial state and is used for being locked with a lock groove formed in the edge of an opening of the container body in a matched mode. The driving assembly is connected with the lock catch mechanism and used for driving the spring bolt to stretch out and draw back, according to the container capable of being sealed, through automatic lock catch, a disposable packing belt and a packing buckle are replaced, and the packing procedure is simplified.

Description

Technical Field

[0001] This utility model relates to the field of turnover container technology, specifically to a sealable container. Background Technology

[0002] The existing cardboard boxes often use disposable materials such as strapping, buckles, and tape when packing goods, which wastes resources and increases the difficulty of packing operations. Moreover, when cardboard boxes are soaked in water, they are prone to damage and bulging during transportation and stacking.

[0003] Another type of plastic turnover box has a lid, which is usually a double-flip lid. When fully loaded with goods, the center of the box (where the double flaps meet) experiences the greatest impact on the lid. There are usually latches connecting the flaps, but because the lid is relatively soft and easily deformed, the double flaps can easily be pushed upwards after an impact, causing the latches to fail. Summary of the Invention

[0004] The purpose of this invention is to provide a sealable container with a single flip-top structure, which is equipped with an automatic locking mechanism to achieve automatic locking and simplify the packaging process.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A sealable container includes a container body consisting of a base and side panels, and a lid, the lid being adapted to be installed at the container opening. It also includes a self-locking mechanism disposed inside the lid, the self-locking mechanism comprising:

[0007] A locking mechanism having at least one retractable latch, which in its initial state partially extends out of the edge of the lid for engaging with a locking groove located at the edge of the opening of the container body for locking.

[0008] A drive assembly, connected to the locking mechanism, is used to drive the lid to lock or unlock relative to the container opening.

[0009] In one embodiment, the drive component includes an operating part, through which the lid locks or unlocks the container opening.

[0010] In one embodiment, the operating unit drives the extension and retraction of the latch to engage with the locking groove at the edge of the container body opening to achieve locking and unlocking operations.

[0011] In one embodiment, the lid is further provided with a lid stop, and the locking mechanism is provided with a locking limit part. The lid stop is provided relative to the locking limit part to limit the displacement of the locking mechanism within a preset distance of the lid.

[0012] In one embodiment, the drive assembly includes a reset member that acts on the latching mechanism and generates a force on the latching mechanism to maintain the latch in its initial state.

[0013] In one embodiment, the reset element is a spring, the box cover is provided with a box cover limiting part, the locking mechanism is provided with a locking limiting part, and the two ends of the spring are respectively fixedly connected to the box cover limiting part and the locking limiting part.

[0014] In one embodiment, the locking mechanism includes a guide block, the cover is provided with a guide groove, the guide block is located in the guide groove, and the locking mechanism realizes the extension and retraction of the locking tongue by sliding the guide block in the guide groove.

[0015] In one embodiment, the lock groove has a locking groove and a container guide portion, and the lock tongue includes a stop portion and a latch guide portion. The latch guide portion and the container guide portion cooperate with each other to guide the stop portion of the lock tongue into the locking groove for fixation.

[0016] In one embodiment, the container guide protrudes from the locking groove, and the container guide is capable of restricting the movement of the stop in the height direction of the side plate.

[0017] In one embodiment, the edge of the lid is provided with a flange that surrounds the perimeter.

[0018] In one embodiment, the eaves of the box lid is provided with a box lid engaging portion, which engages with the upper end of the side plate on the corresponding side.

[0019] In one embodiment, the lid engagement portion is an eave extending longitudinally along the body of the lid, the eave overlapping the upper end of the corresponding side panel to form a cover.

[0020] In one embodiment, the lid engagement portion is a first engagement portion located on the edge of the lid, and the side plate corresponding to the first engagement portion is provided with a second engagement portion. The first engagement portion and the second engagement portion cooperate to achieve the engagement of the lid and the side plate.

[0021] In one embodiment, the first engagement portion is a first engagement surface extending from the edge of the lid towards the base, the second engagement portion is a second engagement surface extending upward from the upper end of the side plate, and a stop portion is disposed on the upper end of the side plate; in the lid-closed state, the first engagement surface is located inside the second engagement surface, and the bottom of the first engagement surface abuts against the stop portion.

[0022] In one embodiment, the lid is provided with a lid limiting part, and the side plate is provided with a side plate limiting part that matches the lid limiting part. When the lid closes the opening of the container, the lid limiting part is located within the side plate limiting part.

[0023] In one embodiment, the lid is further provided with a cavity area and a non-cavity area, wherein the cavity area is a closed cavity structure; at least a portion of the cavity area surrounds at least a portion of the non-cavity area to form a reinforcing area.

[0024] In one embodiment, the cavity region is a single, continuous structure.

[0025] In one embodiment, the cavity region includes: a plurality of independent cavity sections that are not interconnected; at least a portion of the independent cavity sections surround at least a portion of the non-cavity region to form the reinforcement region.

[0026] In one embodiment, the cavity area is present on both the side edge of the lid with the self-locking mechanism and the side edge of the lid that is hinged to the side plate.

[0027] The present invention adopts the above-mentioned technical solution and has the following beneficial effects: the lid of the sealable container provided by the present invention is provided with a self-locking mechanism. The self-locking mechanism can directly cooperate with the locking groove at the edge of the container body opening to lock it, thereby replacing disposable packing straps and packing buckles, simplifying the packaging process, and overcoming the defects of sealing and locking stability caused by the combination of two lids of the old box body. At the same time, it is convenient and easy to use.

[0028] In addition, a cavity is provided on the lid to strengthen it and prevent the latch from failing due to vibration or deformation. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of a sealable container, with a partial cross-section of the latch to show the latch and side panel in the unlocked state.

[0030] Figure 2 This is a schematic diagram of the lid, with a partial cross-section of the latch to show part of its structure.

[0031] Figure 3 yes Figure 2 The enlarged view at point B shows a schematic diagram of the connection between the locking mechanism and the lid.

[0032] Figure 4 This is a schematic diagram of the lid, with a partial cross-section of the latch to show part of its structure.

[0033] Figure 5 yes Figure 4An enlarged view at point C shows a schematic diagram of the reset component in its initial state.

[0034] Figure 6 yes Figure 4 An enlarged view at point C shows a schematic diagram of the reset member in a stretched state.

[0035] Figure 7 yes Figure 1 The enlarged view at point A shows a schematic diagram of the latch and side panel in the unlocked state.

[0036] Figure 8 This is a schematic diagram of a sealable container, with a partial cross-section of the latch to show the latch and side panel in the locked state.

[0037] Figure 9 yes Figure 8 An enlarged view at point D shows a schematic diagram of the latch and side panel in the locked state.

[0038] Figure 10 This is a schematic diagram of a sealable container, with a partial cross-section of the cavity to show the structural diagram of the cavity.

[0039] Figure 11 yes Figure 10 An enlarged view at point E in the middle, showing a schematic diagram of the cavity structure.

[0040] Figure 12 This is a cross-sectional view of the top surface of the box lid, showing the structure of the three cavities.

[0041] Figure 13 This is a schematic diagram of a turnover box, showing a partial cross-section of the box lid and the interlocking of the side panels.

[0042] Figure 14 yes Figure 13 An enlarged view at point F in the middle, showing a schematic diagram of the engagement between the lid and the short side panel.

[0043] Figure 15 yes Figure 13 An enlarged view of point G in the middle, showing a schematic diagram of the engagement between the lid and the long side panel.

[0044] Figure 16 This is a schematic diagram of a turnover box, showing a partial cross-section of the box lid and another structural schematic diagram of the interlocking of the box lid and side panels.

[0045] Figure 17 yes Figure 16 The enlarged view at point H shows a schematic diagram of the interlocking of the lid and side panel.

[0046] Figure 18This is a top view of the turnover box, and a partial cross-section of the box lid showing the interlocking structure of the lid and side panels.

[0047] Figure 19 yes Figure 18 The enlarged view at point I shows a schematic diagram of the interlocking of the lid and side panel. Detailed Implementation

[0048] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, so as to better understand 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 only for illustrating the essential spirit of the technical solution of the present invention.

[0049] 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.

[0050] 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”.

[0051] 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.

[0052] 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.

[0053] In the following description, in order to clearly demonstrate the structure and working method of this utility model, 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.

[0054] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0055] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0056] like Figure 1 As shown, this utility model provides a sealable container. In this embodiment, a box with a lid is used as an example. The box includes a base 11 and four side panels arranged in pairs opposite each other. The four side panels are divided into a pair of long side panels 12 and a pair of short side panels 13. The pair of long side panels and the pair of short side panels are arranged opposite each other, and the pair of long side panels and the pair of short side panels together with the base 11 form a rectangular cavity for loading goods. In some cases, the lengths of the long side panels and the short side panels can be the same, in which case a square cavity is formed. The side panels and the base are usually made of plastic, which can be manufactured using existing processes such as vacuum forming and injection molding.

[0057] The box also includes a lid 14, one side of which is hinged to the top of one of the long side panels 12, allowing the lid 14 to be flipped to cover the cavity opening and to be flipped to the outside of the long side panel, leaving the box open. A self-locking device 2 is provided on the other side of the lid 14, engaging with the top of the other long side panel 12 to secure the lid 14 to the long side panel 12. This replaces disposable packing straps and buckles, simplifying the packaging process and overcoming the shortcomings of older two-piece lid designs in terms of sealing and locking stability, offering convenience and ease of use. In some cases, a buckle can also be provided on the short side panel, or on both the short and long side panels. The edge of the lid 14 has a circumferential flange to enhance its strength.

[0058] See Figures 2-6The self-locking device 2 includes a locking mechanism 21 and a reset member 22. The locking mechanism 21 includes a guide block 211, a locking tongue 212, and an operating part 213. The lid 14 is provided with a guide groove 141 that matches the guide block 211. The guide groove 141 extends along both sides of the relatively long side plate of the lid 14. The guide block 211 is slidably confined within the guide groove 141, and the guide block 211 can move within the guide groove 141 along the width direction of the lid 14. Specifically, the guide block 211 of the locking mechanism 21 has guide protrusions 2111 on both sides of the lid 14 along its length. The guide groove 141 is a guide groove extending along the width direction of the lid. The guide protrusions 2111 are located within the guide groove, allowing them to slide along the guide groove and be limited in the length direction of the lid. The operating part 213 is used to drive the guide block 211 to move along the guide groove direction, thereby realizing the extension and retraction of the locking tongue 212, and then allowing the locking tongue 212 to engage with the locking groove on the long side plate for locking. In this embodiment, the guide block 211, the locking tongue 212 and the operating part 213 are an integral structure, and the operating part 213 is a groove portion provided on the integral structure.

[0059] The reset member 22 acts on the guide block 211, generating a force on the guide block 211 towards the other side of the lid 14, i.e., a force towards the hinged connection side of the lid. In this embodiment, the reset member 22 is a spring. The lid 14 is provided with a lid limiting part 142, and the locking mechanism 21 is provided with a locking limiting part 214. The two ends of the spring are respectively fixedly connected to the lid limiting part 142 and the locking limiting part 214. Preferably, the lid 14 is also provided with a lid stop part 143, which is located on the travel path of the locking limiting part 214 to block the locking limiting part 214, thereby limiting the distance that the locking mechanism 21 extends away from the hinged side of the lid.

[0060] See Figure 1 , Figures 7-9A locking groove 121 is provided on the top of the long side plate 12 corresponding to the side of the lid 14 where the self-locking device 2 is located. The locking groove 121 cooperates with the locking tongue 212 of the self-locking device 2 to lock the self-locking device 2 to the long side plate 12. Specifically, the locking groove 121 has a locking groove 1211, and a side plate guide portion 1212 is provided on the top of the locking groove 1211. The locking tongue 212 has a stop portion 2121 that is fixed to the locking groove 1211 and a latch guide portion 2122 that matches the side plate guide portion 1212. The latch guide portion 2122 and the side plate guide portion 1212 cooperate to guide the stop portion 2121 of the locking tongue 212 into the locking groove 1211, and the side plate guide portion 1212 protrudes from the locking groove 1211 to restrict the movement of the stop portion 2121 in the height direction of the long side plate 12. At the same time, the force exerted by the reset member 22 on the guide block 211 keeps the stop portion 2121 in the fixed locking groove 1211. In this way, the self-locking device 2 locks and fixes the lid 14 and the long side plate 12. When unlocking is required, the locking tongue 212 is forced away from the hinge side of the lid to overcome the force of the reset member 22 and the stop portion 2121 is disengaged from the locking groove 1211 to achieve unlocking.

[0061] See Figures 10-12 The lid 14 also has a cavity area and a non-cavity area. The cavity area is a closed cavity structure that can enhance the strength of the lid 14. At least a portion of the cavity area surrounds at least a portion of the non-cavity area to form the reinforcing area. The cavity area can be formed by injection molding or welding. The cavity area is present on the side edge of the lid where the latch is provided and on the side edge of the lid hinged to the side plate.

[0062] Specific examples Figure 12 As shown, the cavity region can be as follows: Figure 12 The illustrated structure includes a first cavity 1441, a second cavity 1442, and a third cavity 1443. The first cavity 1441 extends along the length of the lid and is located on the edge of the lid 14 where the self-locking device 2 is located, thus strengthening the lid on the locking side. The second cavity 1442 also extends along the length of the lid and is located on the edge of the lid 14 where the hinge is located, thus strengthening the lid on the hinged side. The third cavity 1443 extends along the width of the lid and is located between the first cavity 1441 and the second cavity 1442. The number of third cavities 1443 can be designed according to the length of the lid to further strengthen it.

[0063] The area surrounded by the two third cavities 1443, the first cavity 1441, and the second cavity 1442 is the reinforcement zone 1444. This zone prevents the lid 14 from deforming due to water accumulation, thus ensuring timely drainage. The two third cavities 1443, the first cavity 1441, and the second cavity 1442 can be an interconnected integral structure or independent cavities that are not interconnected. Furthermore, the cavity area is not limited to... Figure 12 The structure of the cavity, such as the third cavity 1443, can be set at an angle, or the third cavity 1443 can be arc-shaped, and the first cavity 1441 and the second cavity 1442 are the same.

[0064] In other embodiments, the cavity region can have other structures, such as a ring structure. In this case, the central area surrounded by the ring structure is a reinforcing area. The ring structure is an integral chamber, i.e., a single, continuous structure. Of course, it can also be formed by splicing together multiple independent cavity parts to form a ring-shaped cavity region. Understandably, the reinforcing area formed around the cavity region can have multiple shapes, such as a triangular shape or a racetrack shape. In this case, the cavity region can also be a single, continuous structure or multiple independent cavity parts that are not interconnected.

[0065] See Figures 13-15 The lid 14 and the corresponding side panels are provided with engaging structures, which are divided into a first engaging structure corresponding to the short side panel and a second engaging structure corresponding to the long side panel. (See also...) Figure 14 The first interlocking structure of the lid corresponding to the short side plate is an eave 145 extending longitudinally along the lid 14. The eave 145 overlaps the upper end 131 of the short side plate and forms a cover. The eave 145 can limit the deformation and collapse of the lid and limit the separation of the lid eave from the upper end of the side plate. It can improve the support capacity of the lid and the ability to resist deformation and indentation after being subjected to force, thereby preventing the lock from failing due to the deformation of the lid.

[0066] See Figure 15 The corresponding interlocking structure on one side of the long side plate is a first interlocking surface 144 formed by the edge of the lid. The first interlocking surface 144 extends from the edge of the lid 14 towards the base. The upper end of the long side plate 12 is provided with a second interlocking surface 122, which extends along the depth direction of the box body. The upper end of the long side plate 12 is provided with a stop portion 123 that abuts against the bottom of the first interlocking surface 144. When the lid is closed, the first interlocking surface 144 is located inside the second interlocking surface 122, and the bottom of the first interlocking surface 144 abuts against the stop portion 123, so that the first interlocking surface 144 and the upper end of the long side plate 12 interlock and support the lid on one side of the long side plate. This improves the support capacity of the lid and its resistance to deformation and denting under force, thereby preventing the latch from failing due to lid deformation.

[0067] See Figure 16 and Figure 17 The first interlocking structure of the lid on the side corresponding to the short side plate is a first groove 146 with a U-shaped cross section. The upper end of the short side plate is provided with a second groove 132 that cooperates with the first groove 146. The second groove 132 is also a U-shaped cross section. When the lid 14 is closed, the first groove 146 and the second groove 132 interlock with each other, thereby improving the support capacity of the lid and its resistance to deformation and denting after being subjected to force, thus preventing the latch from failing due to deformation of the lid.

[0068] Similarly, the first interlocking structure of the lid on the side corresponding to the long side plate is also a third groove 147 with a U-shaped cross section. The upper end of the long side plate is provided with a fourth groove 124 that cooperates with the third groove 147. The fourth groove 124 is also a U-shaped structure. When the lid 14 is closed, the third groove 147 and the fourth groove 124 interlock with each other, thereby improving the support capacity of the lid and its resistance to deformation and denting after being subjected to force, thus preventing the latch from failing due to deformation of the lid.

[0069] See Figure 18 and Figure 19 The lid is equipped with a limiting structure that cooperates with the side panel. When the lid closes the opening of the container, the limiting part of the lid is located inside the limiting part of the side panel, realizing the interlocking between the lid and the side panel. Through the circumferential interlocking, it forms support and limiting for the lid from multiple directions, thereby improving the supporting capacity of the lid and its ability to resist deformation and denting after being subjected to force.

[0070] Specifically, see Figure 19 The lid 14 has a first lid limiting portion 148 extending from the edge corresponding to the short side plate 13, and the upper surface of the short side plate 13 has a short side plate limiting portion 133 that matches the first lid limiting portion 148. The lid 14 has a second lid limiting portion 149 recessed from the edge corresponding to the long side plate 12, and the upper surface of the long side plate 12 has a long side plate limiting portion 125 extending inwards and matching the second lid limiting portion 149. When the lid 14 closes the container opening, the first lid limiting portion 148 engages with the short side plate limiting portion 133, and the long side plate limiting portion 125 engages with the second lid limiting portion 149, thus achieving an interlocking connection between the lid and the long and short side plates. In this embodiment, the first box cover limiting part 148, the short side plate limiting part 133, the long side plate limiting part 125, and the second box cover limiting part 149 all adopt a T-shaped interlocking structure to achieve interlocking connection.

[0071] The preferred embodiments of this utility model have been described in detail above. However, it should be understood that after reading the above teachings, those skilled in the art can make various alterations or modifications to this utility model. These equivalent forms also fall within the scope defined by the appended claims.

Claims

1. A closable container comprising a container body formed of a base and side panels and a lid, the lid being adapted to fit over an opening in the container, characterised in that, Further comprising a self-locking mechanism arranged inside the box cover, the self-locking mechanism comprising: a lock catch mechanism having at least one retractable lock tongue, the lock tongue partially protruding from the edge of the box cover in an initial state for cooperating with a lock slot arranged at the edge of the opening of the container body for locking; a driving assembly connected with the lock catch mechanism for driving the box cover to lock or unlock relative to the opening of the container.

2. The closable container of claim 1, wherein, The driving assembly comprises an operation part, and the box cover is locked or unlocked relative to the opening of the container through the operation part.

3. The closable container of claim 2, wherein, The operation part drives the retractable action of the lock tongue to cooperate with the lock slot arranged at the edge of the opening of the container body to realize the locking and unlocking operation.

4. The closable container of claim 1, wherein, The box cover further comprises a box cover stopper, and the lock catch mechanism is provided with a lock catch limiting part, and the box cover stopper is arranged relative to the lock catch limiting part to limit the displacement of the lock catch mechanism within a preset distance of the box cover.

5. The closable container of claim 1, wherein, The driving assembly comprises a reset member, and the reset member acts on the lock catch mechanism and generates a force on the lock catch mechanism to maintain the lock tongue in the initial state.

6. The closable container of claim 5, wherein, The reset member is a spring, and the box cover is provided with a box cover limiting part, and the lock catch mechanism is provided with a lock catch limiting part, and the two ends of the spring are fixedly connected to the box cover limiting part and the lock catch limiting part respectively.

7. The closable container of claim 1, wherein, The lock catch mechanism comprises a guide block, the box cover is provided with a guide groove, the guide block is located in the guide groove, and the lock catch mechanism realizes the retractable action of the lock tongue through the sliding of the guide block in the guide groove.

8. The closable container of claim 1, wherein, The lock slot has a locking groove and a container guide part, the lock tongue comprises a stopper and a lock catch guide part, and the lock catch guide part and the container guide part cooperate to guide the stopper of the lock tongue into the locking groove and fix it.

9. The closable container of claim 8, wherein, The container guide part protrudes from the locking groove, and the container guide part can limit the movement of the stopper in the height direction of the side plate.

10. The closable container of claim 1, wherein, The edge of the box cover is provided with a circumferential flange.

11. The closable container of claim 1, wherein, The eave part of the box cover is provided with a box cover engaging part, and the box cover engaging part engages with the upper end part of the corresponding side plate.

12. The closable container of claim 11, wherein, The box cover engaging part is an eave part extending longitudinally along the body of the box cover, and the eave part overlaps and covers the upper end part of the corresponding side plate.

13. The closable container of claim 11, wherein, The box cover engaging part is a first engaging part located at the edge of the box cover, and the side plate corresponding to the first engaging part is provided with a second engaging part, and the first engaging part cooperates with the second engaging part to realize the engagement of the box cover and the side plate.

14. The closable container of claim 13, wherein, The first engaging part is a first engaging surface of the edge of the box cover extending towards the base, the second engaging part is a second engaging surface extending upwards at the upper end part of the side plate, and a stop part is arranged at the upper end part of the side plate; in the closed state of the box cover, the first engaging surface is located inside the second engaging surface, and the bottom of the first engaging surface abuts against the stop part.

15. The closable container of claim 1, wherein, The box cover is provided with a box cover limiting part, the side plate is provided with a side plate limiting part matched with the box cover limiting part, and when the box cover covers the opening of the container, the box cover limiting part is located in the side plate limiting part.

16. The closable container of claim 1, wherein, The box cover is further provided with a cavity area and a non-cavity area, the cavity area is a closed cavity structure, and at least part of the cavity area forms a reinforcing area around at least part of the non-cavity area.

17. The closable container of claim 16, wherein, The cavity area is an integral through whole structure.

18. The closable container of claim 16, wherein, The cavity area comprises a plurality of independent cavity parts not communicated with each other, and at least part of the independent cavity parts form the reinforcing area around at least part of the non-cavity area.

19. The closable container of claim 16, wherein, The side edge of the box cover provided with the self-locking mechanism and the side edge of the side plate hingedly connected with the box cover are both provided with the cavity area.

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