Pallet Box

Abstract

The present invention provides a pallet box, comprising a chassis and an end wall; corner posts are provided at four corners of the chassis, the corner posts have mounting grooves, the mounting grooves have side openings, and at least one of the mounting grooves of two corner posts located at the same end of the chassis has a top opening connected to the side opening; the end walls are provided at both ends of the chassis, and can move between an assembly position provided in a vertical direction and a folded position placed on the chassis, lower corner pieces are provided at both sides of the bottom of the end wall, the lower corner pieces are provided with pins, the pins are at least partially located in the mounting grooves, and can move up and down along the side openings; the corner posts are provided with limiting pieces, the lower corner pieces are provided with stepped portions, the stepped portions include a limiting surface located at the top and a first inclined surface located at the bottom, the first inclined surface is inclined relative to the limiting surface, and when the end wall is in the assembly position, the limiting piece is located on the upper side of the limiting surface. The pallet box according to the present invention can improve assembly efficiency and reduce production costs.

Description

Technical Field

[0001] The present invention relates to the technical field of containers, and in particular to a pallet box. Background Art

[0002] In the known foldable pallet box, the end wall and the side wall are installed on the chassis after they are assembled. For the pallet box in which the end wall is detachably installed on the chassis, the connection structure between the end wall and the chassis is usually complicated and may require the use of fasteners, which makes the installation and removal of the end wall troublesome, resulting in low assembly efficiency and high production cost.

[0003] Therefore, it is necessary to provide a pallet box to at least partially solve the above problems. Summary of the invention

[0004] A series of simplified concepts are introduced in the Summary of the Invention, which will be further described in detail in the Detailed Description of the Invention. The Summary of the Invention does not mean to attempt to define the key features and essential technical features of the claimed technical solution, nor does it mean to attempt to determine the scope of protection of the claimed technical solution.

[0005] In order to at least partially solve the above problems, the present invention discloses a pallet box, which comprises:

[0006] A chassis, wherein four corners of the chassis are respectively provided with corner posts, the corner posts having mounting slots, the mounting slots having side openings, and at least one of the mounting slots of two corner posts located at the same end of the chassis has a top opening communicating with the side opening; and

[0007] End walls, the end walls are arranged at both ends of the chassis, the end walls can move between an assembly position arranged in a vertical direction and a folded position placed on the chassis, lower corner pieces are arranged on both sides of the bottom of the end walls, the lower corner pieces are provided with pins, the pins are at least partially located in the mounting grooves, and can move up and down along the side openings;

[0008] Wherein, the corner column is provided with a limiting piece, and the lower corner piece is provided with a stepped portion, the stepped portion includes a limiting surface located at the top and a first inclined surface located at the bottom, the first inclined surface is inclined relative to the limiting surface, and when the end wall is located in the assembly position, the limiting piece is located on the upper side of the limiting surface to prevent the pin shaft from withdrawing from the top opening.

[0009] According to the pallet box of the present invention, the structures of the end wall and the bottom plate are simple, and the installation and disassembly of the end wall are relatively convenient, which can improve the assembly efficiency of the pallet box and reduce the production cost.

[0010] Optionally, the first inclined surface and the pin are located at the bottom end of the lower corner piece, and the outer peripheral surface of the pin is tangent to both the bottom surface and the outer side surface of the lower corner piece.

[0011] Optionally, when the end wall is in the assembled position, the limiting surface is arranged in the horizontal direction, and / or

[0012] When the end wall is located at the assembled position, the first inclined surface is inclined at an angle of 10° to 30° relative to the vertical direction.

[0013] Optionally, the mounting groove has a first side surface and a second side surface opposite to the first side surface, a side opening is formed between the first side surface and the second side surface, and the limiting member is arranged on the first side surface and is configured to extend toward the second side surface.

[0014] Optionally, the pin is configured as a cylinder extending in the horizontal direction, and / or

[0015] The minimum distance between the first inclined surface and a tangent line of the outer peripheral surface of the pin shaft is smaller than the minimum distance between the stopper and the second side surface.

[0016] Optionally, the stepped portion includes a vertical surface connecting the limiting surface and the first inclined surface, the first inclined surface is located on one side of the vertical surface, and the limiting surface is at least partially located on the other side of the vertical surface.

[0017] Optionally, the vertical surface is perpendicular to the limiting surface.

[0018] Optionally, the stepped portion includes a second inclined surface, one end of the upright surface is connected to the first inclined surface, the other end of the upright surface is connected to one end of the second inclined surface, and the other end of the second inclined surface is connected to the limiting surface.

[0019] Optionally, the angle between the first inclined surface and the vertical surface is an obtuse angle, and / or the angle between the second inclined surface and the vertical surface is an obtuse angle.

[0020] Optionally, the angle between the first inclined surface and the upright surface is greater than the angle between the second inclined surface and the upright surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The following drawings of the embodiments of the present invention are used as part of the present invention for understanding the present invention. The embodiments of the present invention are shown in the drawings and the description thereof is used to explain the principle of the present invention.

[0022] In the accompanying drawings,

[0023] Figure 1A perspective view of a pallet box according to a preferred embodiment of the present invention;

[0024] Figure 2 for Figure 1 A three-dimensional schematic diagram of the chassis of the pallet box;

[0025] Figure 3 for Figure 2 A partial enlarged schematic diagram of the chassis at A;

[0026] Figure 4 for Figure 2 A schematic diagram of a partial structure of the chassis in FIG.

[0027] Figure 5 for Figure 1 A three-dimensional schematic diagram of an end wall of a pallet box;

[0028] Figure 6 for Figure 5 A partial enlarged schematic diagram of the end wall at B;

[0029] Figure 7 for Figure 5 Schematic diagram of the local structure of the end wall;

[0030] Figure 8 for Figure 1 A partial structural diagram of a pallet box in which only the bottom plate and the end wall are shown;

[0031] Fig. 9 for Figure 8 Schematic diagram of the local structure at point C in the middle.

[0032] Description of reference numerals:

[0033] 100: Pallet box 110: Chassis

[0034] 111: Angle column 112: Installation slot

[0035] 113: First side 114: Second side

[0036] 115: bottom surface 116: top opening

[0037] 117: Side opening 118: Stopper

[0038] 120: End wall 121: Lower corner piece

[0039] 122: Pin 123: Step

[0040] 124: Limiting surface 125: First inclined surface

[0041] 126: vertical surface 127: second inclined surface

[0042] 128: End wall web 129: End wall column

[0043] 130: side wall 140: top cover

[0044] 151: End wall lower beam 152: Chassis web

[0045] 153: Chassis side beam 119: Stacking parts

[0046] 161: Groove

[0047] L1: The minimum distance between the first inclined surface and the tangent line of the outer peripheral surface of the pin

[0048] L2: Minimum distance between the stopper and the second side surface DETAILED DESCRIPTION

[0049] In the following description, a large number of specific details are provided to provide a more thorough understanding of the present invention. However, it is obvious to those skilled in the art that the embodiments of the present invention can be implemented without one or more of these details. In other examples, in order to avoid confusion with the embodiments of the present invention, some technical features well known in the art are not described.

[0050] In order to fully understand the embodiments of the present invention, a detailed structure will be presented in the following description. Obviously, the implementation of the embodiments of the present invention is not limited to the specific details familiar to those skilled in the art.

[0051] The present invention provides a pallet box 100, which is foldable. Figure 1 As shown, the pallet box 100 mainly includes a chassis 110, two end walls 120, two side walls 130 and a top cover 140. The chassis 110 is generally configured in a rectangular shape, the two end walls 120 are respectively arranged at the two ends of the chassis 110, the two side walls 130 are respectively arranged on both sides of the chassis 110, and the top cover 140 is arranged on the upper side of the end walls 120 and the side walls 130. The chassis 110, the end walls 120, the side walls 130 and the top cover 140 are generally surrounded to form a rectangular parallelepiped structure. In this embodiment, the two end walls 120 and the two side walls 130 are respectively installed on the chassis 110, and can be arranged in an assembly position along the vertical direction (see Figure 1 ) and a folded position resting on the chassis 110. When the end wall 120 and the side wall 130 are in the folded position, the end wall 120 and the side wall 130 are arranged substantially in a horizontal direction or at a small angle to the horizontal direction.

[0052] like Figures 2 to 4As shown, the four corners of the chassis 110 are respectively provided with corner columns 111. The four corner columns 111 are all configured to be arranged in the vertical direction, wherein two corner columns 111 are arranged at one end of the chassis 110 and are arranged on both sides of the chassis 110 opposite to each other, and the other two corner columns 111 are arranged at the other end of the chassis 110 and are arranged on both sides of the chassis 110 opposite to each other. Specifically, the chassis 110 includes a chassis web 152 and chassis side beams 153 arranged at both ends and both sides of the chassis web 152. The chassis web 152 is a rectangular plate-like structure, and the corner columns 111 can be arranged at the ends of the chassis side beams 153 and connected to two adjacent chassis side beams 153.

[0053] The corner post 111 has a mounting groove 112, and the mounting groove 112 can be configured to extend in the vertical direction. The mounting groove 112 is arranged on the inner side of the corner post 111, specifically, for two corner posts 111 located at the same end of the chassis 110, the mounting groove 112 of one corner post 111 is arranged on the side of the corner post 111 facing the other corner post 111. The mounting groove 112 has a side opening 117 located at the side, and at least one of the mounting grooves 112 of the two corner posts 111 located at the same end of the chassis 110 has a top opening 116 connected to the side opening 117. Specifically, the top opening 116 is located at the top of the corner post 111. In this embodiment, one of the mounting grooves 112 of the two corner posts 111 located at the same end of the chassis 110 has the top opening 116, and the other does not have the top opening. The purpose of such a setting is to reduce the top opening and increase the strength of the corner post 111. The side opening 117 is located on the side of the corner column 111 facing the other corner column 111 located at the same end of the chassis 110. In an unshown embodiment of the present invention, the mounting grooves of the two corner columns located at the same end of the chassis are both provided with a side opening and a top opening communicating with the side opening.

[0054] like Figure 3 and Figure 4, the mounting groove 112 has a first side surface 113 and a second side surface 114 opposite to the first side surface 113, and a bottom surface 115 disposed between the first side surface 113 and the second side surface 114. The bottom surface 115 may connect the first side surface 113 to the second side surface 114 to be integrally formed with the first side surface 113 and the second side surface 114, or the bottom surface 115 may not be directly connected to at least one of the first side surface 113 and the second side surface 114. A side opening 117 may be formed between the first side surface 113 and the second side surface 114. For the mounting groove 112 having a top opening 116, the top opening 116 may be formed between the first side surface 113, the second side surface 114 and the top end of the bottom surface 115. For the mounting groove 112 without a top opening, the first side surface 113, the second side surface 114 and the bottom surface 115 are spaced apart from the upper surface of the corner column 111.

[0055] like Figure 3 As shown, the chassis 110 further includes a stacking piece 119 disposed on the top of the corner column 111. The stacking piece 119 may cover the upper surface of the corner column 111. For the mounting slot 112 having a top opening 116, a groove 161 is disposed at a position of the stacking piece 119 corresponding to the top opening. The shape of the groove 161 may correspond to the shape of the top opening 116. For the mounting slot 112 without a top opening (see Figure 2 ), the upper end of the mounting groove 112 is spaced apart from the upper surface of the corner column 111, and the stacking member 119 completely covers the upper surface of the corner column 111 without the need for additional grooves.

[0056] like Figures 5 to 7 As shown, lower corner pieces 121 are provided on both sides of the bottom of the end wall 120. Specifically, the end wall 120 includes an end wall web 128, end wall columns 129 provided on both sides of the end wall web 128, and an end wall lower beam 151 provided at the bottom of the end wall web 128. The lower corner piece 121 is provided at the bottom of the end wall column 129 and at both ends of the end wall lower beam 151. The lower corner piece 121 is generally configured as a long strip structure extending in the vertical direction, so as to completely cover the side opening 117 of the mounting groove 112, so as to avoid adverse effects on the goods inside the pallet box 100. It is particularly suitable for the case where the end wall 120 is relatively thin, because the end wall column 129 has a large bending radius and cannot completely cover the side opening 117 of the mounting groove 112. The lower corner piece 121 is preferably a casting or a forging to have sufficient strength.

[0057] like Figure 6 and Figure 7As shown, the lower corner piece 121 is provided with a pin 122. The pin 122 can be constructed as a cylindrical structure extending in the horizontal direction. The pin 122 is at least partially located in the mounting groove 112 and can move up and down along the side opening 117. Specifically, one of the two pins 122 located on the same end wall 120 can enter the mounting groove 112 through the side opening 117 of one mounting groove 112, and the other of the two pins 122 located on the same end wall 120 can enter the mounting groove 112 through the top opening 116 of the other mounting groove 112. When the end wall 120 moves between the assembly position and the folded position, the pin 122 can rotate in the mounting groove 112. In the present invention, as Figures 3 to 7 As shown, the corner column 111 is provided with a limit piece 118, and the lower corner piece 121 is provided with a step portion 123, and the step portion 123 includes a limit surface 124 located at the top and a first inclined surface 125 located at the bottom, and the first inclined surface 125 is inclined relative to the limit surface 124. When the end wall 120 is in the assembled position, the limit piece 118 is located on the upper side of the limit surface 124 to prevent the pin 122 from exiting from the top opening 116. When the end wall 120 is in the assembled position, the outer edge of the limit surface 124 and the outer side surface of the lower corner piece 121 are located on the same vertical plane, so that the limit surface 124 and the limit piece 118 have a large overlap to prevent the pin 122 from exiting from the top opening 116.

[0058] like Figure 3 and Figure 4 As shown, the stopper 118 is disposed on the first side surface 113 and is configured to extend toward the second side surface 114. In this embodiment, the stopper 118 is configured as a cylindrical structure extending in the horizontal direction. Fig. 9 As shown, the minimum distance L1 between the first inclined surface 125 and the tangent line of the outer peripheral surface of the pin shaft 122 (see Figure 7 ) is less than the minimum distance L2 between the stopper 118 and the second side surface 114 (e.g. Figure 4 111 ), so as to avoid interference between the first inclined surface 125 and the stopper 118 when installing the end wall 120. The stopper 118 may be a part separated from the corner column 111, or may be integrally formed with the corner column 111. For example, the stopper 118 may be a pin, and the stopper 118 may be welded to the corner column 111, or the stopper 118 may be formed by punching a tongue out of the corner column 111.

[0059] like Figure 6 and Figure 7As shown, the first inclined surface 125 and the pin 122 are both located at the bottom end of the lower corner piece 121. The outer peripheral surface of the pin 122 is tangent to the bottom surface and the outer side surface of the lower corner piece 121, so as to facilitate the installation of the end wall 120 to the chassis 110 and avoid the interference between the limit surface 124 and the limit piece 118. The pin 122 is located on the side of the lower corner piece 121 facing the corresponding corner column 111. When the end wall 120 is in the assembled position, the limit surface 124 is arranged in the horizontal direction, and the first inclined surface 125 is inclined at an angle D relative to the vertical direction. When the end wall 120 is tilted toward the pallet box until the angle between the end wall 120 and the vertical direction is D (see Figure 8 ), for example, the angle between the end wall web 128 and the vertical direction is D, and the first inclined surface 125 is arranged along the vertical direction (see Fig. 9 ). D is preferably 10° to 30°, for example, D can be 10°, 15° or 30°. As required, D can be less than 10° or greater than 30°.

[0060] Continue to refer to Figure 6 and Figure 7 The step portion 123 further includes a vertical surface 126 connecting the limiting surface 124 and the first inclined surface 125, the first inclined surface 125 is located on one side of the vertical surface 126, and the limiting surface 124 is at least partially located on the other side of the vertical surface 126. Specifically, the first inclined surface 125 is located on the side of the vertical surface 126 facing the inside of the pallet box 100, and the limiting surface 124 is at least partially located on the side of the vertical surface 126 facing the outside of the pallet box 100. Preferably, the vertical surface 126 is perpendicular to the limiting surface 124. The vertical surface 126 is parallel to the end wall web 128, so that the end wall web 128 is in good contact with the lower electrode during resistance welding, so as to ensure that the end wall web 128 is installed in a predetermined posture.

[0061] The step portion 123 further includes a second inclined surface 127. One end of the vertical surface 126 is connected to one end of the first inclined surface 125, the other end of the vertical surface 126 is connected to one end of the second inclined surface 127, and the other end of the second inclined surface 127 is connected to the limiting surface 124. The second inclined surface 127 is located on the side of the vertical surface 126 facing the outside of the pallet box 100. The angle between the first inclined surface 125 and the vertical surface 126 is an obtuse angle, and the angle between the second inclined surface 127 and the vertical surface 126 is an obtuse angle. Preferably, as Figure 7 As shown, the included angle E between the first inclined surface 125 and the upright surface 126 is greater than the included angle F between the second inclined surface 127 and the upright surface 126 .

[0062] The installation and removal process of the end wall 120 is described in detail below:

[0063] The installation process of the end wall 120 is as follows: first, the end wall 120 is lifted upright, and the pin shaft 122 located on one side of the end wall 120 is obliquely inserted into the installation groove 112 without a top opening through the side opening 117. Then, the pin shaft 122 located on the other side of the end wall 120 enters the installation groove 112 from the top opening 116 of another installation groove 112, and the end wall 120 is dropped until the first inclined surface 125 contacts the end of the stopper 118, and the stopper 118 prevents the end wall 120 from continuing to fall. Then, the end wall 120 is tilted toward the inside of the box, so that the angle between the end wall 120 and the vertical direction is D, and the overlap between the stopper 118 and the first inclined surface 125 is gradually reduced until there is no overlap, and the stopper 118 slides over the first inclined surface 125, and the end wall 120 continues to fall until the end wall lower beam 151 contacts the chassis side beam 153 of the chassis 110. Finally, the end wall 120 is folded onto the chassis web 152 of the chassis 110, and the end wall 120 is installed. Alternatively, the end wall 120 is lifted upright, and the pin 122 located on one side of the end wall 120 is obliquely inserted into the installation groove 112 without a top opening through the side opening 117. Then the pin 122 located on the other side of the end wall 120 enters the installation groove 112 from the top opening 116 of another installation groove 112, and the end wall 120 is tilted toward the inside of the box, so that the angle between the end wall 120 and the vertical direction is D, and then the end wall 120 is dropped onto the chassis 110, and finally the end wall 120 is folded onto the chassis web 152 of the chassis 110, and the end wall 120 is installed.

[0064] The structure and installation process of the side wall 130 may be known, or the structure of the side wall 130 is similar to that of the end wall 120 , and the corner column 111 is correspondingly provided with an installation groove for cooperating with the side wall 130 , which will not be described in detail for the sake of simplicity.

[0065] The assembly and locking process of the end wall 120 and the side wall 130 is as follows: first, move the two side walls 130 from the folded position to the assembly position, and then move the two end walls 120 from the folded position to the assembly position. At this time, the limiting surface 124 is located at the lower side of the limiting member 118, and a small amount of matching clearance is left between the limiting member 118 and the limiting member 118. The limiting member 118 blocks the limiting surface 124 so that the end wall 120 cannot be separated from the chassis 110 upward, so as to achieve the connection between the end wall 120 and the chassis 110. Finally, the end wall 120 is connected to the side wall 130 by the lock, so that the side wall 130 cannot move upward relative to the chassis 110. Open the lock, and the two end walls 120 and the two side walls 130 can be moved from the assembly position to the folded position.

[0066] The disassembly process of the end wall 120 is as follows: first remove the two side walls 130 from the chassis 110, then stand up the end wall 120 from the folded state and keep it tilted toward the inside of the box, so that the angle between the end wall 120 and the vertical direction is D, then lift the end wall 120 upward, move the pin 122 located on one side of the end wall 120 upward along the side opening 117 of the mounting groove 112, and withdraw from the top opening 116 to disengage from the corner column 111, then withdraw the pin 122 located on the other side of the end wall 120 from the side opening 117 of the other mounting groove 112 to disengage from the corner column 111, and the disassembly of the end wall 120 is completed.

[0067] In the present invention, when the end wall 120 is in the folded position, if the end wall 120 is lifted upward, the lower corner piece 121 will be blocked by the stopper 118, and the end wall 120 cannot be removed from the bottom plate 110, which ensures that the end wall 120 will not be separated from the bottom plate 110 when in the folded position. In the present invention, the end wall 120 does not need to be limited by the shape of the top opening 116 to be separated from the bottom plate 110, so the shape of the top opening 116 is not limited, and it is only necessary to ensure that when the end wall 120 is tilted into the box to an angle D with the vertical direction, the pin 122 can enter and exit from the top opening 116.

[0068] According to the pallet box of the present invention, the structures of the end wall and the bottom plate are simple, and the installation and disassembly of the end wall are relatively convenient, which can improve the assembly efficiency of the pallet box and reduce the production cost.

[0069] Unless otherwise defined, the technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art in the technical field of the present invention. The terms used herein are only for describing specific implementation purposes and are not intended to limit the present invention. Terms such as "setting" and the like appearing in this article can mean that one component is directly attached to another component, or that one component is attached to another component through an intermediate. Features described in this article in one embodiment may be applied to another embodiment alone or in combination with other features, unless the feature is not applicable in the other embodiment or otherwise specified.

[0070] The present invention has been described through the above-mentioned embodiments, but it should be understood that the above-mentioned embodiments are only for the purpose of example and illustration, and are not intended to limit the present invention to the described embodiments. It can be understood by those skilled in the art that more variations and modifications can be made according to the teachings of the present invention, and these variations and modifications all fall within the scope of the protection claimed by the present invention.

Claims

1. A pallet box, characterized in that: include: A chassis, wherein four corners of the chassis are respectively provided with corner posts, the corner posts have mounting slots, the mounting slots have side openings, and at least one of the mounting slots of two corner posts located at the same end of the chassis has a top opening communicating with the side opening; as well as End walls, the end walls are arranged at both ends of the chassis, the end walls can move between an assembly position arranged in a vertical direction and a folded position placed on the chassis, lower corner pieces are arranged on both sides of the bottom of the end walls, the lower corner pieces are provided with pins, the pins are at least partially located in the mounting grooves, and can move up and down along the side openings; The corner column is provided with a limit piece, the lower corner piece is provided with a stepped portion, the stepped portion includes a limit surface at the top and a first inclined surface at the bottom, the first inclined surface is inclined relative to the limit surface, when the end wall is in the assembled position, the limit surface is arranged in the horizontal direction, the limit piece is located on the upper side of the limit surface to prevent the pin shaft from exiting from the top opening, When installing the end wall, the end wall is tilted toward the inside of the box so that the angle between the end wall and the vertical direction is D, so that the stopper does not overlap the first inclined surface, and the end wall falls to the bottom plate. When removing the end wall, tilt the end wall toward the inside of the box so that the angle between the end wall and the vertical direction is D, and then lift the end wall upward. The D is 10° to 30°.

2. The pallet box according to claim 1, characterized in that: The first inclined surface and the pin are located at the bottom end of the lower corner piece, and the outer peripheral surface of the pin is tangent to the bottom surface and the outer side surface of the lower corner piece.

3. The pallet box according to claim 1, characterized in that: When the end wall is located at the assembled position, the first inclined surface is inclined at an angle of 10° to 30° relative to the vertical direction.

4. The pallet box according to claim 1, characterized in that: The mounting groove has a first side surface and a second side surface opposite to the first side surface, a side opening is formed between the first side surface and the second side surface, and the limiting member is arranged on the first side surface and is configured to extend toward the second side surface.

5. The pallet box according to claim 4, characterized in that: The pin is configured as a cylindrical shape extending in the horizontal direction, and / or The minimum distance between the first inclined surface and a tangent line of the outer peripheral surface of the pin shaft is smaller than the minimum distance between the stopper and the second side surface.

6. The pallet box according to claim 1, characterized in that: The stepped portion includes a vertical surface connecting the limiting surface and the first inclined surface, the first inclined surface is located on one side of the vertical surface, and the limiting surface is at least partially located on the other side of the vertical surface.

7. The pallet box according to claim 6, characterized in that: The vertical surface is perpendicular to the limiting surface.

8. The pallet box according to claim 6, characterized in that: The stepped portion includes a second inclined surface, one end of the upright surface is connected to the first inclined surface, the other end of the upright surface is connected to one end of the second inclined surface, and the other end of the second inclined surface is connected to the limiting surface.

9. The pallet box according to claim 8, characterized in that: The angle between the first inclined surface and the vertical surface is an obtuse angle, and / or The included angle between the second inclined surface and the vertical surface is an obtuse angle.

10. The pallet box according to claim 8, characterized in that: An included angle between the first inclined surface and the vertical surface is greater than an included angle between the second inclined surface and the vertical surface.

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