Quick release structure and snap-gauge box capable of being quickly released

Abstract

A first plate body and a second plate body are connected in a hinged mode through a hinged connecting piece, the hinged connecting piece comprises a shaft end and a fixed end, a limiting piece limits the shaft end relative to the second plate body, and when the first plate body is in a horizontal connecting state relative to the second plate body, the limiting piece is in an inoperable state; when the first plate body forms a preset angle relative to the second plate body, the limiting piece is operably removed to release the connection state of the first plate body and the second plate body; the side wall is hinged to the side bottom plate through the hinge connecting piece, the hinge connecting piece comprises the shaft end and the fixed end, the fixed end is fixedly connected with the side wall, the shaft end is hinged to the side bottom plate, the limiting piece limits the shaft end relative to the side bottom plate, and when the clamping plate box is in the containing state and the limiting piece is in the inoperable state, the clamping plate box can be disassembled quickly. And when the clamping plate box is in a detached state, the side walls rotate to a preset angle towards the center direction of the bottom plate, and the limiting pieces are operably removed, so that the connecting state of the side walls and the base is relieved.

Description

Technical Field

[0001] The present application is applied to the field of logistics transportation, and specifically relates to a quick-release structure and a quick-release pallet box. Background Art

[0002] In the prior art, the plates are hinged and fixed, and the adjacent plates are usually connected by hinged connectors such as hinges and screws to complete the hinged connection between the two. When the hinged state needs to be released, the fixed connection structure between the hinged connector and the plate needs to be removed. In the prior art, the folding pallet box used for logistics transportation also needs to assemble and disassemble the side walls. Removing the hinged connector requires releasing the fixed connection between the hinged connector and the side wall, which is time-consuming and labor-intensive. Summary of the invention

[0003] In view of the above reasons, the present application discloses a quick-release structure, including a first plate body, a second plate body, a hinged connection member and a limit member, the first plate body and the second plate body are hingedly connected via the hinged connection member, the hinged connection member includes an axis end and a fixed end, the fixed end is fixedly connected to the first plate body, the axis end is hinged to the second plate body, and the limit member limits the axis end relative to the second plate body. When the first plate body is in a horizontal connection state relative to the second plate body, the limit member is in an inoperable state. When the first plate body is at a preset angle relative to the second plate body, the limit member can be removed operably, thereby releasing the connection state between the first plate body and the second plate body.

[0004] Preferably, the second plate body has a first accommodating groove for accommodating the shaft end, and a second accommodating groove for accommodating the limiting member, the first accommodating groove and the second accommodating groove are connected, and the second accommodating groove is closer to the connection between the first plate body and the second plate body than the first accommodating groove.

[0005] Preferably, the limiting member includes a limiting portion and an inserting portion, the shaft end can be inserted into the first receiving groove from a first direction, the inserting portion can be inserted into the receiving groove from a second direction perpendicular to the first direction, and the limiting portion abuts against the shaft end and limits it.

[0006] Preferably, the limiting member further includes a clamping portion, the clamping portion is arranged on the plug-in portion, a clamping portion is provided at a corresponding position of the second accommodating groove, and the clamping portion and the clamping portion are clamped and connected.

[0007] Preferably, the locking portion includes an elastic arm and a claw with elasticity, and the plug-in portion is provided with a third accommodating groove which is recessed downward in a first direction, the notch of the third accommodating groove is connected to one end of the elastic arm, and the other end of the elastic arm is connected to the claw, and the claw extends upward along the first direction and is higher than the surface of the plug-in portion, and the claw is engaged and connected with the locking portion, and under the action of external force, the claw and the elastic arm can be moved downward along the first direction and placed in the third accommodating groove, and the engaged connection state with the locking portion can be released.

[0008] The advantage disclosed above in the present application lies in that the hinged connection between the first plate body and the second plate body is completed by a hinged connection piece, and the connection between the hinged connection piece and the second plate body is limited by a limit piece, thereby ensuring that the limit piece is inoperable in a horizontal connection state, thereby ensuring the connection strength; after rotating by a preset angle, the limit piece can be moved out, thereby releasing the connection state between the hinged connection piece and the second plate body, thereby achieving the purpose of quick disassembly.

[0009] The present application also discloses a quick-detachable pallet box, characterized in that it includes side walls, a base, an articulated connection piece and a limit piece, the base includes a bottom plate and a side bottom plate extending upward along the circumference of the bottom plate, the side wall is hingedly connected to the side bottom plate through the articulated connection piece, the articulated connection piece includes an axis end and a fixed end, the fixed end is fixedly connected to the side wall, the axis end is hinged to the side bottom plate, and the limit piece limits the axis end relative to the side bottom plate. When the pallet box is in a accommodating state, the side wall is perpendicular to the bottom plate, the side wall and the base together form a accommodating space that opens upward, and the limit piece is in an inoperable state. When the pallet box is in a disassembled state, the side wall is rotated toward the center direction of the bottom plate to a preset angle, and the limit piece can be removed operably, thereby releasing the connection state between the side wall and the base.

[0010] Preferably, the upper end of the side bottom plate has a first accommodating groove for accommodating the shaft end, and a second accommodating groove for accommodating the limiting member, the first accommodating groove and the second accommodating groove are connected, and the second accommodating groove is closer to the connection between the side wall and the side bottom plate than the first accommodating groove.

[0011] Preferably, the articulated connection also includes a connecting portion, the fixed end, the connecting portion and the shaft end are connected in sequence, the side bottom plate also has a fourth accommodating groove, the fourth accommodating groove is connected to the first accommodating groove and the second accommodating groove, the fourth accommodating groove is used to accommodate the connecting portion, the first accommodating groove extends downward in a direction perpendicular to the bottom plate, the shaft end can be displaced up and down in the first accommodating groove, the articulated connection can rotate relative to the shaft end, and the limit member limits the shaft end and the first accommodating groove.

[0012] Preferably, the limiting member includes a limiting portion and a plug-in portion, the shaft end can be inserted into the first receiving groove from a first direction, and the plug-in portion can be inserted into the second receiving groove from a second direction perpendicular to the first direction, and the limiting portion abuts against a notch of the first receiving groove away from the bottom plate to limit the shaft end within the first receiving groove.

[0013] Preferably, the limiting member further includes a clamping portion, the clamping portion is arranged on the plug-in portion, a clamping portion is provided at a corresponding position of the second accommodating groove, and the clamping portion and the clamping portion are clamped and connected.

[0014] Preferably, the locking portion includes an elastic arm and a claw with elasticity, and the plug-in portion is provided with a third accommodating groove which is recessed downward in a first direction, the notch of the third accommodating groove is connected to one end of the elastic arm, and the other end of the elastic arm is connected to the claw, and the claw extends upward along the first direction and is higher than the surface of the plug-in portion, and the claw is engaged and connected with the locking portion, and under the action of external force, the claw and the elastic arm can be moved downward along the first direction and placed in the third accommodating groove, and the engaged connection state with the locking portion can be released.

[0015] Preferably, when the pallet box is in the storage state, the side walls and the hinged connectors are rotated relative to the bottom side plates toward the center of the bottom plate until the surface of the side walls is parallel to the bottom plate.

[0016] The advantage of the present application is that the hinged connection between the base and the side wall of the pallet box is completed by a hinged connection piece, and the connection between the hinged connection piece and the bottom plate is limited by a limit piece. When the pallet box is in the accommodation state, the limit piece is inoperable. When the side wall needs to be removed, the connection between the side wall and the base can be released by rotating the side wall to a preset angle and removing the limit piece, thereby achieving the purpose of quick removal.

[0017] Other specific features and specific advantages of the present application will be described in the subsequent description, or some features and advantages can be inferred or unambiguously determined from the description, or can be learned by implementing the above-mentioned technology of the present disclosure.

[0018] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, preferred embodiments are specifically cited below and described in detail with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 This is a structural explosion diagram of Example 1 of the present application.

[0021] Figure 2 This is a schematic diagram of the structure of the hinged connection member of Example 1 of the present application.

[0022] Figure 3 This is a schematic diagram of the second plate structure of Example 1 of the present application.

[0023] Figure 4 This is a schematic diagram of the structure of the limiting member of the present application.

[0024] Figure 5 This is a state diagram of Example 1 of the present application.

[0025] Figure 6 This is a structural explosion diagram of Example 2 of the present application.

[0026] Figure 7 This is an enlarged view of the structure at position A of Example 2 of the present application.

[0027] Figure 8 This is a schematic diagram of the structure of the hinged connection member of Example 2 of the present application.

[0028] Fig. 9 This is a state diagram of Example 2 of the present application.

[0029] Fig.10 This is a side view of the storage state of Example 2 of the present application.

[0030] Fig.11 This is a top view of the storage state of Example 2 of the present application.

[0031] In the figure: 1. first plate body; 2. second plate body; 3. hinged connecting member; 301. fixed end; 302. shaft end; 303. connecting portion; 4. first accommodating groove; 5. second accommodating groove; 501. clamping portion; 6. limiting member; 601. limiting portion; 602. plug-in portion; 603. third accommodating groove; 604. elastic arm; 605. claw; 7. bottom plate; 8. side bottom plate; 9. side wall; 10. fourth accommodating groove. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] First embodiment.

[0034] like Figures 1 to 5 As shown, the first direction is the Z direction, the second direction is the Y direction, the hinged connector 3 includes a fixed end 301 and an axial end 302 connected in sequence, the first plate body 1 is hingedly connected to the second plate body 2 through the hinged connector 3, specifically, the first plate body 1 is fixedly connected to the fixed end 301 of the hinged connector 3, and the upper end of the second plate body 2 has a first accommodating groove 4 for accommodating the axial end 302 of the hinged connector 3 and a second accommodating groove 5 for accommodating the limiter 6, the first accommodating groove 4 is connected to the second accommodating groove 5, and the second accommodating groove 5 is closer to the connection between the first plate body 1 and the second plate body 2 than the first accommodating groove 4, that is, at In the Z direction, the second accommodating groove 5 is located above the first accommodating groove, and the shaft end is placed in the first accommodating groove. The first accommodating groove limits the shaft end in the X direction and the Y direction. The limiting member 6 is inserted in the second accommodating groove 5 and limits the shaft end 302 in the Z direction. The first plate body 1 can rotate relative to the second plate body 2 through the shaft end 302. When the first plate body 1 is in a horizontal connection state relative to the second plate body 2, the butt joint is pressed into the second accommodating groove 5. At this time, the limiting member 6 in the second accommodating groove 5 is in an inoperable state, that is, the limiting member 6 is at the butt joint. When the first plate body 1 is at a preset angle relative to the second plate body 2, especially as Figure 5 As shown, the second receiving groove 5 is exposed, and the limiting member 6 can be removed. At this time, the limiting of the axis end 302 in the Z direction is released, and the first plate body 1 can be separated from the second plate body 2.

[0035] In some embodiments, the position-limiting member 6 is a press key, including a position-limiting portion 601 and a plug-in portion 602 connected in sequence, and the plug-in portion 602 can be inserted into the second receiving groove 5. When the plug-in portion 602 is completely inserted into the second receiving groove 5, the bottom end of the position-limiting portion 601 abuts against the outer peripheral surface of the shaft end 302 placed in the first receiving groove 4, and the abutting surface of the position-limiting portion 601 and the shaft end 302 is an arc surface to prevent interference with the rotation of the shaft end 302. When it is necessary to remove the position-limiting member 6, the first plate body 1 is rotated relative to the second plate body 2 by a preset angle to expose the position of the second receiving groove 5, and the plug-in portion 602 is moved out of the second receiving groove, and the position-limiting portion 601 leaves the shaft end, and the position-limiting portion 601 releases the shaft end, and the position-limiting portion 302 is released.

[0036] In some embodiments, a third accommodating groove 603 is provided on the plug-in portion 602, which is recessed downward in the Z direction. The third accommodating groove 603 may penetrate the plug-in portion 602 or may not penetrate the plug-in portion 602. The notch of the third accommodating groove 603 is connected to one end of the elastic arm 604. The other end of the elastic arm 604 is provided with a claw 605. The claw 605 extends upward along the Z direction and is higher than the surface of the plug-in portion 602. The second accommodating groove 5 is provided with a clamping portion 501 at a position relative to the claw, which is specifically a beam for cooperating with the claw 605. When the plug-in portion 602 is completely placed in the second accommodating groove 5, the claw 605 is engaged and connected with the clamping portion 501 under the action of the elastic arm 604. At this time, the limiting member 6 is fixed relative to the second plate body 2 and limits the shaft end 302. When it is necessary to remove the limit member 6, the first plate body 1 is rotated relative to the second plate body 2 by a preset angle to expose the position of the second receiving groove 5, and an external force is applied downward along the Z direction to the elastic arm 604. At this time, the engagement connection between the claw 605 and the clamping portion 501 is released, and the claw 605 and the elastic arm 604 are placed in the third receiving groove 603, and their height is not higher than the upper surface of the third receiving groove 603. At this time, the limit member 6 is moved out of the second receiving groove 5 from the Y direction to release the limitation on the shaft end 302.

[0037] The advantage of this embodiment 1 is that the hinged connection between the first plate body 1 and the second plate body 2 is completed by the hinged connection member 3, and the connection between the hinged connection member and the second plate body 2 is limited by the limit member 6, which ensures that the limit member 6 is inoperable in the horizontal connection state, thereby ensuring the connection strength. After rotating at a preset angle, the limit member 6 can be moved out, thereby releasing the connection state between the hinged connection member 3 and the second plate body 2, thereby achieving the purpose of quick disassembly.

[0038] Second embodiment.

[0039] like Figure 4 , Figures 6 to 11 As shown, the base includes a rectangular bottom plate 7 and a side bottom plate 8 extending upward along the circumference of the bottom plate. There are four side walls 9, which are arranged around the side bottom plates 8 on four sides of the bottom plate 7 and are hingedly connected to the side bottom plates 8 through hinged connectors 3. The side walls 9 can rotate relative to the side bottom plates 8.

[0040] The hinged connecting member 3 includes a fixed end 301, a connecting portion 303 and an axis end 302 which are connected in sequence. The fixed end 301 of the hinged connecting member 3 is fixedly connected to the side wall 9, and can be specifically inserted into the bottom of the side wall 9. The inner surface of the relative position of the side bottom plate 8 is provided with a first accommodating groove 4, and the first accommodating groove 4 is used to accommodate the axis end 302, and extends downward in a direction perpendicular to the bottom plate 7. The axis end 302 is placed in the first accommodating groove 4, and the first accommodating groove 4 limits the axis end 302 in the X direction and the Y direction. The axis end 302 can rotate axially in the first accommodating groove 4, and can move up and down in the Z direction. The side bottom plate 8 is provided with a second accommodating groove 5, and the second accommodating groove 5 is connected to the first accommodating groove 4, and the second accommodating groove 5 is closer to the connection between the side wall 9 and the side bottom plate 8 than the first accommodating groove 4. The second accommodating groove 5 is located above the first accommodating groove 4, the limiting member 6 is inserted into the second accommodating groove 5, and the shaft end 302 is limited in the Z direction. The side bottom plate 8 is also provided with a fourth accommodating groove 10, and the fourth accommodating groove 10 is connected with the first accommodating groove 4 and the second accommodating groove 5. The fourth accommodating groove 10 is used to accommodate the connecting portion 303 and limit the connecting portion 303 in the Y direction. When the connecting portion 303 is completely placed in the fourth accommodating groove 10, the length direction of the connecting portion 303 is perpendicular to the direction of the bottom plate 7, that is, the Z direction. At this time, the connecting portion 303 can only be rotated toward the center direction of the bottom plate 7 to prevent the side wall 9 from rotating outward during the board removal process, thereby causing harm to the operator. When the side wall 9 is horizontally connected to the side bottom plate 8, the connection strength is improved at the same time.

[0041] When the connection part 303 is completely placed in the fourth receiving groove 10, the pallet box is in a receiving state, and the stopper 6 is in an inoperable state; when the side wall 9 is at a preset angle relative to the side bottom plate 8, it can be rotated 30 degrees relative to the side bottom plate 8 toward the center of the bottom plate 7, the second receiving groove 5 can be exposed and the stopper 6 can be removed, and the Z direction limit of the shaft end 302 is released, and the side wall 9 and the side bottom plate 8 can be separated from the Z direction. When the side wall 9 is rotated 90 degrees relative to the side bottom plate, the connection part 303 completely leaves the fourth receiving groove 10, and the side wall 9 is stacked on the bottom plate 7, and the pallet box is in a storage state.

[0042] It should be noted that if Fig.10 and Fig.11 As shown, since the first accommodating groove 4 has an extension in the Z direction, when the pallet box is in the storage state, the four side walls 9 can be stacked on the bottom plate 7 in sequence, that is, the stacking height of the four side walls 9 is stacked in sequence from top to bottom, and the axial ends 302 of their respective corresponding hinged connectors 3 are also located at different heights in the Z direction in their respective first accommodating grooves 4, ensuring that in the storage state, each side wall 9 is stacked flatly without tilted stacking.

[0043] In some embodiments, the position-limiting member 6 is a press key, including a position-limiting portion 601 and a plug-in portion 602 connected in sequence, and the plug-in portion 602 can be inserted into the second receiving groove 5. When the plug-in portion 602 is completely inserted into the second receiving groove 5, the bottom end of the position-limiting portion 601 abuts against the outer peripheral surface of the shaft end 302 placed in the first receiving groove 4, and the abutting surface of the position-limiting portion 601 and the shaft end 302 is an arc surface to prevent interference with the rotation of the shaft end 302. When it is necessary to remove the position-limiting member 6, the first plate body 1 is rotated relative to the second plate body 2 by a preset angle to expose the position of the second receiving groove 5, and the plug-in portion 602 is moved out of the second receiving groove, and the position-limiting portion 601 leaves the shaft end, and the position-limiting portion 601 releases the shaft end, and the position-limiting portion 302 is released.

[0044] In some embodiments, a third accommodating groove 603 is provided on the plug-in portion 602, which is recessed downward in the Z direction. The third accommodating groove 603 may penetrate the plug-in portion 602 or may not penetrate the plug-in portion 602. The notch of the third accommodating groove 603 is connected to one end of the elastic arm 604. The other end of the elastic arm 604 is provided with a claw 605. The claw 605 extends upward along the Z direction and is higher than the surface of the plug-in portion 602. The second accommodating groove 5 is provided with a clamping portion 501 at a position relative to the claw, which is specifically a beam for cooperating with the claw 605. When the plug-in portion 602 is completely placed in the second accommodating groove 5, the claw 605 is engaged and connected with the clamping portion 501 under the action of the elastic arm 604. At this time, the limiting member 6 is fixed relative to the second plate body 2 and limits the shaft end 302. When it is necessary to remove the limit member 6, the first plate body 1 is rotated relative to the second plate body 2 by a preset angle to expose the position of the second receiving groove 5, and an external force is applied downward along the Z direction to the elastic arm 604. At this time, the engagement connection between the claw 605 and the clamping portion 501 is released, and the claw 605 and the elastic arm 604 are placed in the third receiving groove 603, and their height is not higher than the upper surface of the third receiving groove 603. At this time, the limit member 6 is moved out of the second receiving groove 5 from the Y direction to release the limitation on the shaft end 302.

[0045] The advantage of this embodiment 2 is that the hinged connection between the side bottom plate 8 and the side wall 9 of the pallet box is completed by the hinged connection part 3, and the connection between the hinged connection part 3 and the side bottom plate 9 is limited by the limit member 6. When the pallet box is in the accommodation state, the limit member 6 is covered by the connection between the side wall 9 and the side bottom plate 8 and is thus inoperable. When the side wall 9 needs to be removed, the connection between the side wall 9 and the side bottom plate 8 can be released by rotating the side wall 9 to a preset angle and removing the limit member 6, thereby achieving the purpose of quick removal.

[0046] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0047] Finally, it should be noted that the above-described embodiments are only specific implementation methods of the present application, which are used to illustrate the technical solutions of the present application rather than to limit them. The protection scope of the present application is not limited thereto. Although the present application has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that any technician familiar with this technical field can still modify the technical solutions recorded in the aforementioned embodiments within the technical scope disclosed in the present application, or make equivalent replacements for some of the technical features therein; and these modifications, changes or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be covered by the protection scope of the present application.

Claims

1. A quick-release structure, characterized in that: The present invention comprises a first plate body, a second plate body, a hinged connection member and a limit member, wherein the first plate body and the second plate body are hingedly connected via the hinged connection member, the hinged connection member comprises an axis end and a fixed end, the fixed end is fixedly connected to the first plate body, the axis end is hinged to the second plate body, and the limit member limits the axis end relative to the second plate body, when the first plate body is in a horizontal connection state relative to the second plate body, the limit member is in an inoperable state, and when the first plate body is at a preset angle relative to the second plate body, the limit member can be removed operably, thereby releasing the connection state between the first plate body and the second plate body.

2. The quick-release structure according to claim 1, characterized in that: The second plate body has a first accommodating groove for accommodating the shaft end, and a second accommodating groove for accommodating the limiting member, the first accommodating groove is connected to the second accommodating groove, and the second accommodating groove is closer to the connection between the first plate body and the second plate body than the first accommodating groove.

3. The quick-release structure according to claim 2, characterized in that: The limiting member includes a limiting portion and an inserting portion. The shaft end can be inserted into the first receiving groove from a first direction, and the inserting portion can be inserted into the receiving groove from a second direction perpendicular to the first direction. The limiting portion abuts against the shaft end and limits it.

4. The quick-release structure according to claim 3, characterized in that: The position-limiting member further comprises a clamping portion, which is arranged on the plug-in portion, and a clamping portion is arranged at a corresponding position of the second accommodating groove, and the clamping portion and the clamping portion are clamped and connected.

5. The quick-release structure according to claim 4, characterized in that: The clamping part includes an elastic arm and a claw with elasticity, and the plug-in part is provided with a third accommodating groove which is recessed downward in the first direction. The notch of the third accommodating groove is connected to one end of the elastic arm, and the other end of the elastic arm is connected to the claw. The claw extends upward along the first direction and is higher than the surface of the plug-in part. The claw is clamped and connected with the clamping part. Under the action of external force, the claw and the elastic arm can be placed in the third accommodating groove downward along the first direction and release the clamping connection state with the clamping part.

6. A quick-detachable pallet box, characterized in that: The hinged connection piece is hinged to the side plate, and the hinged connection piece is hinged to the side plate. The hinged connection piece includes an axis end and a fixed end, and the fixed end is fixedly connected to the side wall. The axis end is hinged to the side plate, and the limiting piece limits the axis end relative to the side plate. When the pallet box is in a accommodating state, the side wall is perpendicular to the bottom plate, and the side wall and the base together form a accommodating space that opens upward, and the limiting piece is in an inoperable state. When the pallet box is in a disassembled state, the side wall is rotated toward the center of the bottom plate to a preset angle, and the limiting piece can be removed operably, thereby releasing the connection between the side wall and the base.

7. The pallet box according to claim 6, characterized in that: The upper end of the side bottom plate has a first accommodating groove for accommodating the shaft end, and a second accommodating groove for accommodating the limiting member. The first accommodating groove is connected to the second accommodating groove, and the second accommodating groove is closer to the connection between the side wall and the side bottom plate than the first accommodating groove.

8. The pallet box according to claim 7, characterized in that: The articulated connection also includes a connecting portion, the fixed end, the connecting portion and the shaft end are connected in sequence, the side bottom plate also has a fourth accommodating groove, the fourth accommodating groove is connected to the first accommodating groove and the second accommodating groove, the fourth accommodating groove is used to accommodate the connecting portion, the first accommodating groove extends downward in a direction perpendicular to the bottom plate, the shaft end can be displaced up and down in the first accommodating groove, the articulated connection can rotate relative to the shaft end, and the limit member limits the shaft end and the first accommodating groove.

9. The pallet box according to claim 8, characterized in that: The limiting member includes a limiting portion and an inserting portion. The shaft end can be inserted into the first receiving groove from a first direction, and the inserting portion can be inserted into the second receiving groove from a second direction perpendicular to the first direction. The limiting portion abuts against a notch of the first receiving groove away from the bottom plate to limit the shaft end in the first receiving groove.

10. The pallet box according to claim 9, characterized in that: The position-limiting member further comprises a clamping portion, which is arranged on the plug-in portion, and a clamping portion is arranged at a corresponding position of the second accommodating groove, and the clamping portion and the clamping portion are clamped and connected.

11. The pallet box according to claim 10, characterized in that: The clamping part includes an elastic arm and a claw with elasticity, and the plug-in part is provided with a third accommodating groove which is recessed downward in the first direction. The notch of the third accommodating groove is connected to one end of the elastic arm, and the other end of the elastic arm is connected to the claw. The claw extends upward along the first direction and is higher than the surface of the plug-in part. The claw is clamped and connected with the clamping part. Under the action of external force, the claw and the elastic arm can be placed in the third accommodating groove downward along the first direction and release the clamping connection state with the clamping part.

12. The pallet box according to claim 6, characterized in that: When the pallet box is in the storage state, the side wall and the hinged connection member rotate relative to the side bottom plate toward the center of the bottom plate until the surface of the side wall is parallel to the bottom plate.

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