A smooth-surfaced quick-release clamping plate box

Abstract

The application discloses a smooth quick-release clamping plate box, first side walls are arranged opposite two sides of a base and are hinged to the base, second side walls are arranged opposite other two sides of the base and are hinged to the base, the first side walls comprise first lower side walls and first upper side walls, bottom ends of the first lower side walls are hinged to the base, the first upper side walls are hinged to the first lower side walls away from the base, the second side walls comprise second lower side walls and second upper side walls, bottom ends of the second lower side walls are hinged to the base, and the second upper side walls are hinged to the second lower side walls away from the base, inner and outer surfaces of the first upper side walls, the first lower side walls, the second upper side walls and the second lower side walls are integrally formed through one-side core-pulling technology, and the core-pulling direction is the end close to the base, so that dirt is prevented from gathering on the side walls, the clamping plate box is suitable for containing and transporting in a clean environment, the clamping plate box can be folded on two sides, the upper side walls and the lower side walls are separately hinged and rotated, and the containing space is operated through unfolding of the upper side walls without changing the containing structure.

Description

Technical Field

[0001] This application is applied to the field of logistics transportation, and specifically discloses a quick-release pallet box with a smooth surface. Background Technology

[0002] Pallet boxes are commonly used containers for logistics transportation. In the existing technology, the side walls of foldable pallet boxes are processed with a reinforcing grid on both the inner and outer surfaces to ensure structural strength. During storage and transportation, dust and debris accumulate in the reinforcing grid. Due to the recessed structure of the reinforcing grid, it is not easy to remove dust and debris. This makes it unsuitable for industries with high cleanliness requirements, such as new energy batteries. Furthermore, the disassembly of the side walls in the existing technology requires a relatively complicated method, such as unfastening bolts, which is time-consuming and labor-intensive. Summary of the Invention

[0003] In view of the above reasons, this application discloses a smooth-surfaced quick-release pallet box, including a base, two first sidewalls and two second sidewalls. The first sidewalls are disposed opposite to the two sides of the base and hinged to the base. The second sidewalls are disposed opposite to the other two sides of the base and hinged to the base. The base, the first sidewalls and the second sidewalls can be closed to form an upward-opening receiving space. The first sidewalls include a first lower sidewall and a second upper sidewall. The bottom end of the first lower sidewall is hinged to the base, and the first upper sidewall is hinged to the end of the first lower sidewall away from the base. The second sidewalls include a second lower sidewall and a second upper sidewall. The bottom end of the second lower sidewall is hinged to the base, and the second upper sidewall is hinged to the end of the second lower sidewall away from the base. The first upper sidewall, the first lower sidewall, the second upper sidewall and the second lower sidewall are all integrally formed by a single-sided core-pulling process, with the core-pulling direction being the end closer to the base. The inner and outer surfaces of the first upper sidewall, the first lower sidewall, the second upper sidewall and the second lower sidewall are all smooth surfaces.

[0004] Preferably, the first upper sidewall, the first lower sidewall, the second upper sidewall, and the second lower sidewall form a downward-opening cavity by pulling a core from one side. Within the cavity, a plurality of transverse ribs are formed by pulling a core to connect the inner sides of its inner and outer surfaces, and the plurality of transverse ribs divide the cavity into a plurality of sub-cavities.

[0005] Preferably, at least one of the first lower sidewalls has a first recess, which is formed at the upper end of the first lower sidewall to accommodate the first upper sidewall. The first upper sidewall is placed in the first recess and is hinged to the first lower sidewall through the bottom end of the first upper sidewall.

[0006] Preferably, at least one of the second lower sidewalls has a second recess, which is formed at the upper end of the second lower sidewall to accommodate the second upper sidewall. The second upper sidewall is placed in the second recess and is hinged to the second lower sidewall through the bottom end of the second upper sidewall.

[0007] Preferably, it includes a first limiting structure, which is used to limit the relative position between adjacent first lower sidewalls and second lower sidewalls.

[0008] Preferably, it includes a second limiting structure and a third limiting structure, wherein the second limiting structure is used to limit the relative position between the first upper sidewall and the first lower sidewall, and the third limiting structure is used to limit the relative position between the second upper sidewall and the second lower sidewall.

[0009] Preferably, it further includes a locking mechanism, which is used to restrict and release the limiting connection states of the first limiting structure, the second limiting structure, and the second limiting structure, respectively.

[0010] Preferably, it also includes a hinge connector, which includes a fixed end and a shaft end. The upper ends of the base, the first lower sidewall, and the second lower sidewall are each provided with a plurality of shaft receiving portions. The shaft end of the hinge connector is placed in the shaft receiving portion. The hinge connector can rotate relative to the shaft receiving portion. The fixed end is inserted into the corresponding position of the sub-cavity and is fixedly connected to the sub-cavity.

[0011] Preferably, at least one outer surface of the first upper sidewall is provided with a label placement groove, the label placement groove forming a recessed space inward relative to the outer surface of the first upper sidewall for placing a label, a label fixing frame being fastened to the label placement groove and fixing the label, the outer surface of the label fixing frame being located on the same plane as the outer surface of the first upper sidewall.

[0012] Preferably, it includes a top cover, which is operably positioned on top of the first upper sidewall, the first lower sidewall, the second upper sidewall, and the second lower sidewall. The top cover can be connected to the base, and the top cover, the first upper sidewall, the first lower sidewall, the second upper sidewall, the second lower sidewall, and the base together enclose the receiving space.

[0013] The advantage of this application is that it uses a single-sided core-pulling process to ensure that the inner and outer surfaces of the sidewalls are flat and smooth, preventing the accumulation of debris and dust on the sidewalls. This makes it suitable for containment and transportation in a clean and dust-free environment. At the same time, by setting up upper and lower sidewalls, the pallet box can be folded on both sides. The upper sidewall and the corresponding lower sidewall are independently hinged and rotated, allowing operation inside the containment space by unfolding the upper sidewall without changing the containment structure.

[0014] Other specific features and advantages of this application will be set forth in the following description, or some features and advantages may be inferred from the description or determined without doubt, or may be learned by practicing the above-described techniques of this disclosure.

[0015] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0016] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is an exploded view of the structure of this application.

[0018] Figure 2 This is a three-dimensional structural view of the containment state of this application.

[0019] Figure 3 This is the first lower sidewall front view of this application.

[0020] Figure 4 This is a bottom view of the first lower sidewall of this application.

[0021] Figure 5 This is a front view of the first upper sidewall of this application.

[0022] Figure 6 This is a bottom view of the first upper sidewall of this application.

[0023] Figure 7 This is the second lower sidewall front view of this application.

[0024] Figure 8 This is a bottom view of the second lower sidewall of this application.

[0025] Figure 9 This is a front view of the second upper sidewall of this application.

[0026] Figure 10 This is a bottom view of the second upper sidewall of this application.

[0027] Figure 11 This is a partial exploded view of the structure of this application.

[0028] Figure 12 This is the front view of the locking mechanism in this application.

[0029] Figure 13This is a schematic diagram of the locking mechanism of this application.

[0030] Figure 14 This is an enlarged view of position A in this application.

[0031] Figure 15 This is a schematic diagram of the hinged connector of this application.

[0032] Figure 16 This is a schematic diagram of the limiting component of this application.

[0033] Figure 17 This is a schematic diagram of one state of this application.

[0034] In the diagram: 1. Base plate; 2. Side base plate; 3. First lower side wall; 301. First recess; 4. Second lower side wall; 401. Second recess; 5. First upper side wall; 6. Second upper side wall; 7. Horizontal rib; 8. Cavity; 9. First locking part; 10. Second locking part; 11. Third locking part; 12. Fourth locking part; 13. Fifth locking part; 14. Sixth locking part; 15. Locking mechanism; 16. Locking receiving groove; 17. Through hole; 18. Positioning hole; 19. Limiting part; 20. Handle part; 2001. Guide groove; 21. Elasticity 2101, Elastic arm plate; 2102, Protruding claw part; 22, Buckle cover; 23, Hinge connector; 2301, Fixed end; 2302, Shaft end; 2303, Connecting part; 25, Limiting part; 2501, Limiting part; 2502, Insertion part; 2503, Snap-fit ​​structure; 26, Label placement slot; 28, Label fixing frame; 29, Top cover; 2901, First protrusion; 2902, Second protrusion; 30, Bottom support frame; 31, Straight guide strip; 32, First receiving slot; 33, Second receiving slot; 34, Third receiving slot. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] like Figures 1 to 10The pallet box shown has a rectangular base plate 1 and side base plates 2 extending upwards along the four sides. There are two first lower side walls 3, which are respectively arranged opposite to the side base plates 2 on both sides. There are two second lower side walls 4, which are respectively arranged opposite to the side base plates 2 on the other two sides. The bottom end of the first lower side wall 3 is movably hinged to the side base plate 2 on which it is located. The bottom end of the second lower side wall 4 is movably hinged to the side base plate 2 on which it is located. The bottom end of the first upper side wall 5 is hinged to the end of the first lower side wall 3 away from the base plate 1. That is, the first upper side wall 5, the first lower side wall 3 and the side base plate 2 are sequentially hinged. The bottom end of the second upper side wall 6 is hinged to the end of the second lower side wall 4 away from the base plate 1. That is, the second upper side wall 6, the second lower side wall 4 and the side base plate 2 are sequentially hinged. When the first upper sidewall 5, the first lower sidewall 3, the second upper sidewall 6, and the second lower sidewall 4 are all connected perpendicular to the base plate 1, they form an upward-opening rectangular prism-shaped accommodating space, and the pallet box is in an accommodating state. When the first upper sidewall 5, the first lower sidewall 3, the second upper sidewall 6, and the second lower sidewall 4 are all connected horizontally to the base plate 1, the first upper sidewall 5, the first lower sidewall 3, the second upper sidewall 6, and the second lower sidewall 4 are stacked and placed within the accommodating space of the base, and the pallet box is in a stored state. It should be noted that in this embodiment, the base plate 1 is rectangular, the first upper sidewall 5 and the first lower sidewall 3 are positioned opposite each other on the short side of the side base plate 2, and the second upper sidewall 6 and the second lower sidewall 4 are positioned opposite each other on the long side of the side base plate 2.

[0037] Unlike existing technologies, the first upper sidewall 5, first lower sidewall 3, second upper sidewall 6, and second lower sidewall 4 are all integrally formed using a single-sided core-pulling process. The core-pulling direction is from one side of the bottom end. This process ensures that the inner and outer surfaces of the first upper sidewall 5, first lower sidewall 3, second upper sidewall 6, and second lower sidewall 4 are smooth, facilitating surface cleaning in high-cleanliness working environments. In this embodiment, the first upper sidewall 5, first lower sidewall 3, second upper sidewall 6, and second lower sidewall 4 form a hollow cavity with an opening facing downwards. Multiple transverse ribs 7 are formed within the cavity, connecting the inner surfaces. These ribs divide the sidewalls into multiple sub-cavities 8, strengthening the structural strength of each sidewall and ensuring it can withstand greater stress without deformation.

[0038] In some embodiments, the top of the first lower sidewall 3 has an opening in a first direction to form a first recess 301. The first direction is the Z direction, which is perpendicular to the direction of the base plate 1. The first lower sidewall 3 is U-shaped. The first upper sidewall 5 is placed inside the first recess 301. The bottom end of the first upper sidewall 5 is hinged to the bottom of the first recess 301 of the first lower sidewall 3. When the first upper sidewall 5 moves to a position where it is perpendicular to the direction of the base plate 1 as well as the first lower sidewall 3, the top height of the first upper sidewall 5 is the same as the top height of the first lower sidewall 3, forming a rectangular sidewall.

[0039] In some embodiments, the top end of the second lower sidewall 4 has an opening in a first direction, forming a second recess 401. The first direction is the Z direction, which is perpendicular to the direction of the base plate 1. The second lower sidewall 4 is U-shaped, and the second upper sidewall 6 is placed inside the second recess 401. The bottom end of the second upper sidewall 6 is hinged to the bottom of the second recess 401 of the second lower sidewall 4. When the second upper sidewall 6 moves to a position where both it and the second lower sidewall 4 are perpendicular to the direction of the base plate 1, the top end height of the second upper sidewall 6 and the top end height of the second lower sidewall 4 are the same, forming a rectangular sidewall.

[0040] In the above embodiment, the first upper sidewall 5 and the second upper sidewall 6 form a small window that can move relative to the hinged first lower sidewall 3 and the second upper sidewall 6. In the receiving state, the first upper sidewall 5 and the second upper sidewall 6 can rotate relative to the first lower sidewall 3 and the second upper sidewall 6 respectively, so that the items in the receiving space can be inspected or operated without changing the receiving structure.

[0041] In some embodiments, the left and right ends of the relative inner and outer surfaces of the first lower sidewall 3 are provided with first engaging portions 9 extending along the inner surface and protruding outwards; the left and right ends of the relative inner and outer surfaces of the second lower sidewall 4 are provided with second engaging portions 10 extending along the outer surface and protruding inwards. When the first lower sidewall 3 and the adjacent second lower sidewall 4 are both perpendicular to the direction of the base plate 1, the first engaging portions 9 engage with the second engaging portions 10, forming a first limiting structure. Under the action of the first limiting structure, when the first lower sidewall 3 and the second engaging portion 10 are engaged, the first engaging portions 9 and the second engaging portions 10 are connected. When the adjacent second lower sidewalls 4 are both located in a direction perpendicular to the base plate 1, the first lower sidewall 3 cannot rotate relative to the base plate 1 away from the center of the base plate 1, i.e., rotate outward. At the same time, the second lower sidewall 4 also cannot rotate relative to the base plate 1 away from the center of the base plate 1, i.e., rotate outward. If rotation away from the center of the base plate 1 is required, the first lower sidewall 3 needs to be rotated at a certain angle towards the center of the base plate 1, i.e., rotated inward, thereby releasing the engagement connection between the first locking part 9 and the second locking part 10. Only then can the second lower sidewall 4 rotate outward relative to the base plate.

[0042] In some embodiments, at the left and right ends of the relative inner and outer surfaces of the first upper sidewall 5, a third locking portion 11 is provided, extending along the outer surface and protruding towards the inner surface. At the corresponding position of the first recess 301 of the first lower sidewall 3, a fourth locking portion 12 is provided, extending along the inner surface and protruding towards the outer surface. When the first upper sidewall 5 and the first lower sidewall 3 are in the same plane in the connection state, the third locking portion 11 and the fourth locking portion 12 are connected in cooperation, and the third locking portion 11 and the fourth locking portion 12 form a second limiting structure. Under the action of the second limiting structure, the first upper sidewall 5 cannot rotate inward relative to the first lower sidewall 3. Simultaneously, at both ends of the relative inner and outer surfaces of the second upper sidewall 6, a fifth engaging portion 13 extending along the outer surface and protruding towards the inner surface is provided. Correspondingly, at the second recess 401 of the second lower sidewall 4, a sixth engaging portion 14 extending along the inner surface and protruding towards the outer surface is provided. When the second upper sidewall 6 and the second lower sidewall 4 are in the same plane, the fifth engaging portion 13 and the sixth engaging portion 14 engage and connect, forming a third limiting structure. Under the action of the third limiting structure, the second upper sidewall 6 cannot rotate inward relative to the second lower sidewall 4.

[0043] It should be noted that the first, second, and third limiting structures described above all serve to limit and connect the structures they belong to. The specific limiting structure forms described above are only preferred embodiments, and the specific limiting structure forms can be adjusted according to actual needs, without any restrictions.

[0044] In some implementations, such as Figure 1 , Figure 2 , Figures 11 to 13As shown, a locking mechanism 15 is provided on the side of the first lower sidewall 3 near the second lower sidewall 4, used to lock and release the connection between the limiting and the limiting mechanism. A locking receiving groove 16, with its outer surface recessed inwards, is provided on the first lower sidewall 3 near the adjacent second lower sidewall 4. The locking receiving groove 16 has a through hole 17 passing through the first lower sidewall. A positioning hole 18 is provided at the abutment point between the second lower sidewall 4 and the first lower sidewall 3. The opening directions of the through hole 17 and the positioning hole 18 are the same. The limiting part 19, the handle part 20, and the elastic part 21 are connected in sequence. Both the handle part 20 and the elastic part 21 are located in the locking receiving groove 15. Inside the 6, the elastic part 21 abuts against the inner wall of the locking receiving groove 16 on the side away from the through hole 17. When the elastic part 21 is in a natural state without external force, the limiting part 19 is a protrusion. The limiting part 19 passes through the through hole 17 and is placed in the positioning hole 18. At this time, the first lower side wall 3 and the second lower side wall 4 are locked and cannot be displaced relative to each other. When the elastic part 21 is compressed by external force, the limiting part 19 retracts and is completely placed in the locking receiving groove 16. At this time, the first lower side wall 3 and the second lower side wall 4 are unlocked and can rotate relative to the base plate 1. The cover 22 is fastened into the locking receiving groove 16. The outer surface of the cover 22 is on the same plane as the outer surface of the first lower side wall 3 and avoids the position of the handle part 20, thereby ensuring the flatness of the overall side wall. In this embodiment, the locking receiving groove 16, the through hole 17, the positioning hole 18, the limiting part 19, the handle part 20, the elastic part 21 and the cover 22 together constitute the locking mechanism 15.

[0045] In a preferred embodiment of the above embodiments, a horizontally raised straight guide bar 31 is provided at the bottom of the locking receiving groove 16. A guide slot 2001 is provided near the bottom of the locking receiving groove 16. The guide slot 2001 is connected to the straight guide bar 31 to guide the handle 20 in the horizontal direction, ensuring that the limiting part 19 can be smoothly retracted between the through hole 17 and the positioning hole 18.

[0046] In another preferred embodiment of the above embodiments, the elastic part 21 is composed of two elastic arm plates 2101 connected at an angle. The two elastic arm plates 2101 are connected at an obtuse angle, preferably 130 degrees to 150 degrees. When under the action of external force, the angle between the two elastic arm plates 2101 increases. When the external force is released, the angle between the two elastic arm plates 2101 returns to the initial angle. At the end of the elastic arm plate 2101 away from the connecting end, there is a protruding claw part 2102 extending in the direction away from the handle part 20. The elastic arm plate 2101 contacts the groove wall of the locking receiving groove 16 through the protruding claw part 2102, thereby preventing the situation where the elastic arm plates 2101 do not rebound when the external force is large and the angle between the elastic arm plates 2101 is greater than a certain angle. At the same time, the contact between the protruding claw part 2102 and the locking receiving groove 16 also reduces the friction and is more conducive to the recovery of the elastic arm plate 2101.

[0047] It should be noted that the locking mechanism 15 in the above embodiments can also be set on the first upper sidewall 5 to lock and release the connection between the first upper sidewall 5 and the first lower sidewall 3, and can also be set on the second upper sidewall 6 to lock and release the connection between the second upper sidewall 6 and the second lower sidewall 4. The structure and working principle are the same as the locking mechanism 15 in the above embodiments, and no limitation is made here. With the above-mentioned locking mechanism 15, the handle direction is parallel to the bottom surface. When both hands are placed on the handle part 20 and pulled relative to each other, the lock can be released. At the same time, the first lower sidewall 3 or the second lower sidewall 4 is rotated inward. At this time, the handle part 20 will only be subjected to a small upward force, making it less likely to slip out of the hand. This is more ergonomic, less prone to damage, and ensures the life of the mechanism.

[0048] In some implementations, such as Figure 1 , Figures 14 to 17As shown, the first lower sidewall 3 and the corresponding side base plate 2, and the second lower sidewall 4 and the corresponding side base plate 2 are all hingedly connected by hinge connectors 23. The hinge connectors 23 include a fixed end 2301 and a shaft end 2302 that are connected to each other. The fixed end 2301 can be inserted into the cavity 8 of the first lower sidewall 3 and the second lower sidewall 4 and fixedly connected to the cavity 8. The specific fixed connection can be made by external bolt fastening or by engaging with the internal structure of the cavity 8. There are no restrictions here. Since the cavity 8 is produced by the single-sided core pulling process, there is no need to process the installation groove of the first lower sidewall 3 and the second lower sidewall 4 during the connection of the fixed end 2301 with the first lower sidewall 3 and the second lower sidewall 4. This does not affect the smoothness and flatness of the inner and outer surfaces of the first lower sidewall 3 and the second lower sidewall 4, and is more suitable for high-cleanliness working environments. The upper end of the side base plate 2 is provided with a first receiving groove 32, which is used to receive the shaft end 2302. The shaft end 2302 can be placed in the first receiving groove 32. The limiting member 25 is operably set on the shaft end 2302 and limits the shaft end 2302 to be located in the first receiving groove 32. When the card box is in the receiving state, that is, when the first lower side wall 3 and the second lower side wall 4 are connected perpendicular to the direction of the base plate 1, the joint between the two and the side base plate 2 will press against the first receiving groove 32 and cover the first receiving groove 32 and the limiting member 25. At this time, the limiting member 25 is in an inoperable state. The hinged connector 23 can rotate relative to its shaft end 2302. The first lower side wall 3 and the second lower side wall 4 can rotate relative to the corresponding side base plate 2 to complete the hinged connection state. When the first lower sidewall 3 and the second lower sidewall 4 are rotated to a certain angle relative to their corresponding bottom plate 2, the lower ends of the first lower sidewall 3 and the second lower sidewall 4 do not mate with the upper ends of the bottom plate 2. At this time, the positions of the first receiving groove 32 and the limiting member 25 are exposed. The limiting member 25 is then released from its limiting state on the shaft end 2302, allowing the shaft end 2302 to be moved out of the first receiving groove 32. This detaches the first lower sidewall 3 and the second lower sidewall 4 from the bottom plate 2, completing the rapid disassembly of the sidewalls and releasing the connection. Compared to the prior art, which requires disassembling the sidewalls by releasing bolt connections, this method is convenient, quick, and saves time and effort.

[0049] In the above embodiments, a preferred embodiment is that the hinged connector 23 includes a fixed end 2301, a connecting part 2303, and a shaft end 2302 connected in sequence. The fixed end 2301 of the hinged connector 23 is inserted into and fixedly connected to the corresponding cavity 8 of the first lower side wall 3 and the second lower side wall 4. A first receiving groove 32 is disposed on the inner surface of the side bottom plate 2 at a relative position to receive the shaft end 2302. The first receiving groove 32 extends downward in a direction perpendicular to the bottom plate 1. The shaft end 2302 is placed in the first receiving groove 32. The first receiving groove 32 limits the shaft end 2302 in the X and Y directions. The shaft end 2302 can rotate axially within the first receiving groove 32 and can move up and down in the Z direction. The side bottom plate 2 is provided with a second receiving groove 33, which is disposed on the inner surface of the side bottom plate 2 at a relative position. Extending along the Z direction, the second receiving groove 33 communicates with the first receiving groove 32. The second receiving groove 33 is used to accommodate the connecting part 2303 and limits the connecting part 2303 in the X direction. When the connecting part 2303 is completely placed in the second receiving groove 33, the length direction of the connecting part 2303 is perpendicular to the bottom plate 1, i.e., the Z direction. At this time, the connecting part 2303 can only rotate towards the center of the bottom plate 1 and cannot rotate away from the center of the bottom plate 1. This prevents the first lower side wall 3 and the second lower side wall 4 from rotating outward and "turning outward" during the removal of the first lower side wall 3 and the second lower side wall 4, which could cause injury to the operator. When the pallet box is in the receiving state, the connecting part 2303 is completely placed in the second receiving groove 33, increasing the contact surface between the hinged connector 23 and the side bottom plate 2, thereby improving the connection strength. The side base plate 2 is provided with a third receiving groove 34, which is connected to the first receiving groove 32 and the second receiving groove 33. The third receiving groove 34 is closer to the joint between the first lower side wall 3 or the second lower side wall 4 and the corresponding side base plate 2 than the first receiving groove 32. That is, the third receiving groove 34 is located above the first receiving groove 32 in the Z direction. The limiting member 25 is inserted into the third receiving groove 34 and limits the shaft end 2302 in the Z direction. When the limiting member 25 is fully inserted into the third receiving groove 34, the limiting member 25 does not limit the connecting part 2303, but only limits the shaft end 2302, and does not affect the rotation of the hinged connecting member 23 towards the center of the base plate 1.

[0050] When the connecting part 2303 is completely placed in the second receiving groove 33, the pallet box is in the receiving state, and the limiting member 25 is in an inoperable state at the docking point; when the first lower side wall 3 or the second lower side wall 4 rotates relative to the side base plate 2 to a preset angle, specifically, it can rotate 60 degrees relative to the side base plate 2 towards the center of the base plate, which can completely expose the third receiving groove 34 and remove the limiting member 25, specifically, the limiting member 25 is pulled out of the third receiving groove 34. At this time, the Z-direction limiting of the shaft end 2302 is released, and the first lower side wall 3 or the second lower side wall 4 can be separated from the side base plate 2 in the Z direction. When the first lower side wall 3 and the second lower side wall 4 rotate 90 degrees relative to the side base plate 2, the connecting part 230 3. After completely separating from the second receiving groove 33, the first lower sidewall 3 and the second lower sidewall 4 are stacked on the base plate. At this time, the pallet box is in the storage state. It should be noted that since the first receiving groove 32 has an extension in the Z direction, when the pallet box is in the storage state, the two first lower sidewalls 3 and the two second lower sidewalls 4 can be stacked on the base plate in sequence. That is, the stacking height of the two first lower sidewalls 3 and the two second lower sidewalls 4 is stacked from top to bottom in sequence. The shaft end 2302 of their respective hinge connectors 23 is also located at different heights in the Z direction within their respective first receiving grooves 32, ensuring that the first lower sidewalls 3 and the second lower sidewalls 4 are stacked flat in the storage state, and there will be no tilted stacking.

[0051] In a preferred embodiment of the above-described embodiments, the limiting member 25 is a key, comprising a limiting part 2501 and a plug-in part 2502 connected in sequence. The plug-in part 2502 can be inserted into the third receiving groove 34. When the plug-in part 2502 is fully inserted into the third receiving groove 34, the bottom end of the limiting part 2501 covers the first receiving groove 32 in the Z-direction upward direction, limiting the shaft end 2302 in the first receiving groove 32 in the Z-direction, preventing the shaft end 2302 from disengaging, i.e., limiting it in the first receiving groove 32. At the same time, the limiting part... The contact surface between 2501 and the shaft end 2302 is an arc surface to prevent interference with the rotation of the shaft end 2302. At the same time, the insertion part 2502 is also provided with a snap-fit ​​structure 2503. The insertion part 2502 is engaged with the third receiving groove 34 through the snap-fit ​​structure 2503. When it is necessary to remove the limiting member 25, the snap-fit ​​connection between the insertion part 2502 and the third receiving groove 34 is released, and the insertion part 2502 is moved out of the third receiving groove 34. At this time, the limiting part 2501 releases its limitation on the shaft end 2302.

[0052] In some implementations, such as Figure 1 and Figure 11As shown, the outer surface of the first upper sidewall 5 is provided with a label placement groove 26 that is recessed relative to the inner surface. The label placement groove 26 can be used to place labels with identification functions. The label fixing frame 28 is placed on the label and is fastened to the label placement groove 26. When in the fastened connection state, the outer surface of the label fixing frame 28 is on the same plane as the outer surface of the first upper sidewall 5, ensuring the flatness of the sidewall surface. The label fixing frame 28 can be covered with a transparent acrylic sheet or other transparent cover. Similarly, the added cover is also on the same plane as the outer surface of the first upper sidewall 5, ensuring sealing and flatness, while not contaminating the label and facilitating label replacement.

[0053] In some implementations, such as Figure 1 As shown, when the pallet box is in the receiving state, the first upper side wall 5, the first lower side wall 3, the second upper side wall 6, and the second lower side wall 4 are all perpendicular to the base plate 1, and their top heights are on the same plane. The top cover 29 is placed on the top of the base plate 1. There are three bottom support frames 30 below the base plate 1, which are fixedly connected to the bottom of the base plate 1 at intervals along the width direction. The upper surface of the top cover 29 is provided with a first protrusion 2901 that protrudes upward along the four edges. When multiple pallet boxes are stacked vertically, the top cover 29 contacts the base of the previous pallet box, and the first protrusion 2901 engages with the edges of the side base plate 2 and the bottom support frame 30, thereby ensuring the stability of multiple pallet boxes when stacked. The upper surface of the top cover 29 is also provided with several second protrusions 2902, which engage with the gaps between the second protrusions 2902 and the adjacent bottom support frames 30, further ensuring the stability of stacking.

[0054] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0055] Finally, it should be noted that the above-described embodiments are merely specific implementations of this application, used to illustrate the technical solutions of this application, and not to limit them. The protection scope of this application is not limited thereto. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that any person skilled in the art can still modify or easily conceive of changes to the technical solutions described in the foregoing embodiments within the scope of the technology disclosed in this application, or make equivalent substitutions for some of the technical features. Such modifications, changes, or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be covered within the protection scope of this application.

Claims

1. A quick-release pallet box with a smooth surface, characterized in that, The device includes a base, two first sidewalls, and two second sidewalls. The first sidewalls are disposed opposite to the two sides of the base and hinged to the base. The second sidewalls are disposed opposite to the other two sides of the base and hinged to the base. The base, the first sidewalls, and the second sidewalls can be closed to form an upward-opening receiving space. The first sidewalls include a first lower sidewall and a first upper sidewall. The bottom end of the first lower sidewall is hinged to the base, and the first upper sidewall is hinged to the end of the first lower sidewall away from the base. The second sidewalls include a second lower sidewall and a second upper sidewall. The bottom end of the second lower sidewall is hinged to the base, and the second upper sidewall is hinged to the end of the second lower sidewall away from the base. The first upper sidewall, the first lower sidewall, the second upper sidewall, and the second lower sidewall are all integrally formed using a single-sided core-pulling process, with the core-pulling direction being the end closer to the base. The inner and outer surfaces of the first upper sidewall, the first lower sidewall, the second upper sidewall, and the second lower sidewall are all smooth surfaces. The sidewalls are formed into downward-opening cavities by single-sided core pulling. Within these cavities, several transverse ribs are formed by core pulling, connecting the inner and outer surfaces of the cavity. These ribs divide the cavity into several sub-cavities. The system also includes hinged connectors and limiting components. The base includes a base plate and side base plates extending upwards circumferentially along the base plate. The first lower sidewall and the second lower sidewall are hinged to the side base plates via the hinged connectors. The hinged connectors include a shaft end and a fixed end, with the fixed end inserted into corresponding positions on the first and second lower sidewalls. The partition is fixedly connected to the partition, and the shaft end is hinged to the side base plate. The limiting member limits the shaft end relative to the side base plate. When the card box is in the receiving state, the first lower side wall and the second lower side wall are perpendicular to the base plate, and the limiting member is in an inoperable state. When the first lower side wall and the second lower side wall rotate towards the center of the base plate to a preset angle, the limiting member is operablely removed, thereby releasing the connection between the first lower side wall and the second lower side wall and the base.

2. The quick-release pallet box according to claim 1, characterized in that, At least one of the first lower sidewalls has a first recess, which is formed at the upper end of the first lower sidewall to accommodate the first upper sidewall. The first upper sidewall is placed in the first recess and is hinged to the first lower sidewall through the bottom end of the first upper sidewall.

3. The quick-release pallet box according to claim 2, characterized in that, At least one of the second lower sidewalls has a second recess, which is formed at the upper end of the second lower sidewall to accommodate the second upper sidewall. The second upper sidewall is placed in the second recess and is hinged to the second lower sidewall through the bottom end of the second upper sidewall.

4. The quick-release pallet box according to claim 3, characterized in that, It includes a first limiting structure, which is used to limit the relative position between adjacent first lower sidewalls and second lower sidewalls.

5. The quick-release pallet box according to claim 4, characterized in that, It includes a second limiting structure and a third limiting structure. The second limiting structure is used to limit the relative position between the first upper sidewall and the first lower sidewall, and the third limiting structure is used to limit the relative position between the second upper sidewall and the second lower sidewall.

6. The quick-release pallet box according to claim 5, characterized in that, It also includes a locking mechanism, which is used to restrict and release the limiting connection states of the first limiting structure, the second limiting structure and the third limiting structure.

7. The quick-release pallet box according to claim 1, characterized in that, The hinged connector further includes a connecting portion. The fixed end, the connecting portion, and the shaft end are connected in sequence. The upper end of the side base plate has a first receiving groove for accommodating the shaft end, a second receiving groove for accommodating the connecting portion, and a third receiving groove for accommodating the limiting member. The first receiving groove, the second receiving groove, and the third receiving groove are interconnected. The first receiving groove extends downward in a direction perpendicular to the base plate. The shaft end can move up and down within the first receiving groove. The third receiving groove is closer to the first lower side wall and the corresponding side base plate, and at the connection point of the second lower side wall and the corresponding side base plate, the hinged connector can rotate relative to its shaft end. The limiting member is placed in the third receiving groove and limits the shaft end to the first receiving groove.

8. The quick-release pallet box according to claim 7, characterized in that, The limiting member includes a limiting part and a plug-in part. The shaft end can be inserted into the first receiving groove from a first direction. The connecting part can be inserted into the second receiving groove from a first direction. The plug-in part can be inserted into the third receiving groove from a second direction perpendicular to the first direction. The limiting part abuts against the groove of the first receiving groove away from the bottom plate, limiting the shaft end in the first receiving groove. The limiting member is engaged with the third receiving groove.

9. The quick-release pallet box according to claim 1, characterized in that, At least one outer surface of the first upper sidewall is provided with a label placement groove. The label placement groove forms a recessed space inward relative to the outer surface of the first upper sidewall for placing a label. A label fixing frame is fastened to the label placement groove and fixes the label. The outer surface of the label fixing frame is located on the same plane as the outer surface of the first upper sidewall.

10. The quick-release pallet box according to claim 1, characterized in that, Includes a top cover, which is operably positioned on top of the first upper sidewall, the first lower sidewall, the second upper sidewall, and the second lower sidewall. The top cover can be connected to the base. The top cover, the first upper sidewall, the first lower sidewall, the second upper sidewall, the second lower sidewall, and the base together form a closed receiving space.

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