Foldable Pallet Box

Abstract

The present invention provides a foldable pallet box, comprising a chassis, a side panel and a connecting device, wherein the connecting device comprises at least one first connecting mechanism, wherein the first connecting mechanism comprises: a first groove, which is arranged in a first corner column and has a first top opening and a first side opening; and a first connecting shaft, wherein the first connecting shaft has a connecting end and a free end, wherein the free end can rotate in the first groove, so that the first side panel can rotate relative to the chassis, when the first side panel is tilted at a first angle relative to the chassis, a vertical projection of the free end is located within a vertical opening range of the first top opening, so that the free end can enter and exit from the first top opening, and when the first side panel is tilted at a second angle relative to the chassis, a vertical projection of the free end is partially located outside the vertical opening range of the first top opening, so that the free end is blocked by a side wall of the first top opening and cannot enter and exit from the first top opening, and the first angle is different from the second angle.

Description

Technical Field

[0001] The invention relates to a pallet box, in particular to a foldable pallet box. Background Art

[0002] Pallet boxes, as a common logistics transportation container, have been widely used.

[0003] Foldable pallet boxes can be folded for transportation and storage when empty, which increases the transportation volume and reduces the warehouse floor space. They can be quickly assembled into boxes when loading. Folding and assembly of foldable pallet boxes are convenient and efficient. Usually, parts are not easily lost, which facilitates logistics management. Therefore, they are one of the main structural forms of pallet boxes. A pallet box generally consists of a chassis, two end walls oppositely arranged on the end surface of the chassis, and two side walls oppositely arranged on the sides of the chassis. The bottom edges of the end and side walls of the foldable pallet box are hinged on the chassis to realize the folding function. For this purpose, there are multiple hinge methods.

[0004] Usually, in order to fold without order and simplify the structure of the pallet box, the hinged connection between the end and side walls and the chassis adopts a structure with a pin shaft and a closed long hole: as shown in patent CN203958849U (a pallet box side wall anti-dumping structure and a pallet box). This structure is to set a closed long hole on the chassis column, and set threaded holes matching the pin shaft at both ends of the bottom cross beam of the end and side walls. When the end and side walls are assembled, the threaded holes are aligned with the long holes on the chassis and the pin shaft is installed. The pin shaft can rotate in the long hole and can slide up and down in the long hole. The end and side walls of this structure are not easy to lose, but the end and side walls are inevitably damaged during use and need to be repaired or replaced. The end and side walls of this structure are troublesome to repair and replace. The pin shaft must be disassembled and installed every time the end and side walls are repaired or replaced. In addition, the end and side walls need to have threaded holes for installing the pin shaft. The structure is not simple, the processing cost of the threaded holes is high, and the threaded holes after hot-dip galvanizing need to be processed again.

[0005] In order to facilitate the installation, maintenance and replacement of the end and side walls, a prior art articulation method of the end, side wall and chassis adopts a structure of a pin shaft and an open long hole: as shown in patent US6415938B1 (CONTAINERS), open L-shaped long holes from top to bottom are respectively set on the four columns of the chassis along the direction of the end and side walls, and corresponding pin shafts are set at the corresponding positions at the lower ends of the end and side walls. When installing and assembling, the pin shafts set on the end and side walls slide into the long holes from top to bottom along the open long holes. When the end and side walls reach the upright state, the end and side walls are pulled outward from the box so that the pin shaft enters the horizontal section of the L-shaped hole, and the end and side walls are fixedly connected with the chassis in the vertical direction. When folding the box body, first push the end and side walls into the box so that the pin shaft enters the vertical section of the L-shaped hole, and then fold the end and side walls. The hinged structure of the end, side wall and chassis makes it convenient to install, repair and replace the end and side wall, but the end and side wall are easily disassembled, which easily causes the loss of the end and side wall. In addition, the hinged structure of the end, side wall and chassis makes the assembly and folding operations of the end and side wall troublesome.

[0006] In view of the current situation, it is necessary to improve the connection structure between the existing pallet box end, side wall and chassis. Summary of the invention

[0007] 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.

[0008] In order to solve the above problems, the present invention provides a foldable pallet box, which comprises: a chassis, wherein the chassis is respectively provided with corner columns at four corners; side panels, wherein lower corner pieces are provided on both sides of each of the side panels; and a connecting device for connecting the chassis and the side panels so that the side panels have an assembled position and a folded position relative to the chassis; wherein the connecting device comprises at least one first connecting mechanism for connecting the first side panel and the chassis, the first connecting mechanism comprising: a first groove, the first groove is extended in the first corner column in a vertical direction relative to the chassis, and has a first top opening and a first side opening connected to the first top opening and open toward the first side panel; and a first connecting shaft, the first connecting shaft has a connecting end and a free end, the connecting end is fixedly arranged at the first lower corner piece at one end of the first side panel and the free end The first lower corner piece protrudes outward so that the free end can enter the first groove from the first top opening and move up and down in the first groove along the first side opening, and the free end can rotate in the first groove so that the first side panel can rotate relative to the chassis. When the first side panel is tilted at a first angle relative to the chassis, the vertical projection of the free end of the first connecting axis is located within the vertical opening range of the first top opening, so that the free end can enter and exit from the first top opening. When the first side panel is tilted at a second angle relative to the chassis, the vertical projection of the free end of the first connecting axis is partially located outside the vertical opening range of the first top opening, so that the free end is blocked by the side wall of the first top opening and cannot enter and exit from the first top opening. The first angle is different from the second angle.

[0009] Optionally, when the second angle is 90°, the first side panel is in an assembled position.

[0010] Optionally, when the first angle is 0°, the first side panel is in a folded position.

[0011] Optionally, the free end is a cylinder with a truncated portion.

[0012] Optionally, the cut portion has a cut surface that is perpendicular to the inner side surface of the first side plate.

[0013] Optionally, the first connecting device also includes a baffle arranged on the chassis, and a first matching portion arranged on the first side panel, the baffle is parallel to the first side panel located in the assembly position, and is provided with a second matching portion corresponding to the first matching portion, when the first side panel is in the assembly position, the first matching portion matches with the second matching portion and the first side panel abuts against the baffle, so that the first side panel is fixed on the chassis.

[0014] Optionally, the second matching portion is a protrusion, the protrusion is perpendicular to the baffle, and the first matching portion is a through hole capable of engaging with the protrusion.

[0015] Optionally, the upper end of the first corner column has a stacking limiter for supporting the first side panel when the first side panel is located at the assembly position.

[0016] The stacking limiter has a bottom plate, the bottom plate is sealed on the top of the first groove, and the first top opening is formed on the bottom plate.

[0017] Optionally, the connecting device further comprises a second connecting mechanism for connecting the second side plate to the chassis, the second connecting mechanism comprising: a second groove, the second groove is arranged in the second corner column extending along a vertical direction relative to the chassis, and has a second side opening open to the second side plate, and a second side notch open to the outside of the second side plate and connected to the second side opening; a third groove, the third groove is arranged in the third corner column extending along a vertical direction relative to the chassis, and has a third side opening open to the second side plate; a second connecting shaft, the second connecting shaft is arranged on the second side of the second side plate corresponding to the second corner column The third connecting shaft is arranged on the third lower corner piece of the second side plate corresponding to the third angle column and protrudes outward from the third lower corner piece, so that the third connecting shaft can enter and exit the third groove from the third side opening and move up and down in the third groove along the third side opening, and the second connecting shaft and the third connecting shaft rotate simultaneously in the second groove and the third groove, so that the second side plate can rotate relative to the chassis.

[0018] Optionally, the second corner column and the first corner column are the same corner column, or the third corner column and the first corner column are the same corner column.

[0019] Optionally, a fourth groove is provided at an edge portion of the chassis between the second corner column and the third corner column, and when the second side panel is rotated relative to the chassis to be tilted outward of the foldable pallet box, the bottom of the second side panel is inserted downward into the fourth groove to a predetermined depth and is supported in the fourth groove, so that the second side panel is maintained in a position tilted outward of the foldable pallet box.

[0020] Optionally, the second side plate is a side wall arranged on the side of the chassis, or an end wall arranged on the end surface of the chassis.

[0021] Optionally, a locking mechanism is further included, which is disposed on the side panels and locks two adjacent side panels when the side panels are located at the assembly position.

[0022] According to the present invention, the pallet box comprises a chassis, a side panel, and a connecting device for connecting the chassis with the side panel, wherein the connecting device comprises at least one first connecting mechanism. Through the first connecting mechanism, the first side panel can only be assembled or disassembled at a specified angle, that is, only when the side panel is tilted at a first angle relative to the chassis, the free end of the first connecting shaft of the lower corner piece at one end of the side panel can enter and exit from the first top opening of the first groove of the corner column of the chassis, and when the side panel is tilted at a second angle different from the first angle relative to the chassis, the free end of the first connecting shaft cannot be withdrawn from the first top opening of the first groove, so that the first side panel cannot be disassembled from the chassis. In this way, the problem that the side panel of the pallet box is easy to lose during use can be solved, and the operation is simple and convenient, thereby improving the service life of the pallet box. At the same time, since no tools are needed when replacing or repairing the side panel, loading and unloading can be completed by inserting or removing the side panel at a set angle, thereby improving the efficiency of replacement or repair. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The following drawings of embodiments of the present invention are used as part of the present invention for understanding the present invention. The drawings show embodiments of the present invention and their descriptions are used to explain the principles of the present invention. In the drawings,

[0024] Figure 1A is a schematic diagram of the connection between the end wall and the chassis of a pallet box according to an embodiment of the present invention;

[0025] Figure 1B yes Figure 1A An enlarged view of section A is shown;

[0026] Figure 2A yes Figure 1A A schematic diagram of the end wall is shown;

[0027] Figure 2B yes Figure 2A An enlarged view of section B is shown;

[0028] Figure 3 yes Figure 2B A schematic diagram of the dimensions of the first connecting shaft shown;

[0029] Figure 4A yes Figure 1A A schematic diagram of the chassis shown;

[0030] Figure 4B yes Figure 4A An enlarged view of section C is shown;

[0031] Figure 5 yes Figure 4B A schematic diagram of the dimensions of the first top opening shown;

[0032] Figure 6 yes Figure 1A A schematic diagram of the first connecting shaft shown entering the first top opening;

[0033] Figure 7 is a schematic diagram of a first connecting shaft of another embodiment of the present invention;

[0034] Figure 8 is a schematic diagram of a second connecting mechanism and a pallet box in an assembled state according to an embodiment of the present invention;

[0035] Fig. 9 Schematic diagram of a pallet box in a folded state according to an embodiment of the present invention. DETAILED DESCRIPTION

[0036] 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.

[0037] In order to fully understand the embodiments of the present invention, detailed structures 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. The preferred embodiments of the present invention are described in detail below, but in addition to these detailed descriptions, the present invention may also have other embodiments.

[0038] The present invention provides a foldable pallet box, which includes a rectangular chassis 100, two end walls 210, two side walls 220, and a connecting device. The two end walls 210 and the two side walls 220 can be connected and fixed to the chassis 100 by the connecting device. When the pallet box is in an assembled state, the two end walls 210 and the two side walls 220 are in an assembled position. The two end walls 210 are relatively arranged on the end surface of the chassis 100, and the two side walls 220 are relatively arranged on the side of the chassis 100, and the two end walls 210 and the two side walls 220 are perpendicular to the chassis 100. The adjacent side walls 220 are connected and fixed to the end walls 210 by a locking mechanism 400, so as to form a substantially rectangular receiving space. When the pallet box is in a folded state, the two end walls 210 and the two side walls 220 can be folded toward the inside of the pallet box in no particular order and stacked on the chassis 100 . At this time, the two end walls 210 and the two side walls 220 are in a folded position.

[0039] like Figure 1A and 1B As shown, the chassis 100 is provided with corner columns at four corners, including a first corner column 110. Figure 2A and 2B As shown, lower corner pieces are provided on both sides of the end wall 210 and the side wall 220, wherein the end wall 210 includes a first lower corner piece 211. The connecting device includes a first connecting mechanism, and the first connecting mechanism is used to rotatably connect the end wall 210 to the chassis 100.

[0040] Specifically, the first connecting mechanism includes a first groove 310 and a first connecting shaft 320. Figure 4A and 4B As shown, the first groove 310 is disposed in the first corner column 110 and extends in a vertical direction relative to the chassis 100. The first groove 310 has a first top opening 311 and a first side opening 312 that is connected to the first top opening 311 and opens toward the end wall 210. Figure 2A and 2B As shown, the first connecting shaft 320 has a connecting end and a free end, the connecting end is fixedly disposed on the first lower corner piece 211 on one side of the end wall 210, and the free end protrudes outward from the first lower corner piece 211 and can be inserted into the first groove 310 from the first top opening 311. The free end of the first connecting shaft 320 can rotate in the first groove 310, so that the end wall 210 can rotate relative to the chassis 100.

[0041] The free end of the first connecting shaft 320 is a cylinder with a cut-off portion. In this embodiment, the cut-off portion is a structure in which an angle is cut off from the cylinder, and the angle has an inclined surface 321. When the end wall 210 is perpendicular to the chassis 100, the inclined surface 321 forms a certain angle with the chassis 100 and is perpendicular to the inner side surface of the end wall 210, so as to be located directly below the free end. In other embodiments, the inclined surface 321 may also be located directly above the free end.

[0042] In addition, the upper end of the first corner column 110 may have a stacking stopper 111, which is used to support the end wall 210 or the side wall 220 when the end wall 210 or the side wall 220 is in the assembly position. The stacking stopper 111 has a bottom plate, which is sealed on the top of the first groove 310, and a first top opening 311 is formed on the bottom plate. This stacking stopper is mainly used for stacking multiple boxes after the pallet box is folded, and cooperates with the stacking holes at the four corners below the chassis 100, and the stacking holes are inserted into this stacking stopper. In this way, the structure of the first corner column 110 can be simplified, so that it has multiple functions such as connection, support, and stacking of multiple boxes at the same time.

[0043] Next, the attachment and removal of the end wall 210 will be described.

[0044] When installing the end wall 210, the end wall 210 is tilted at a first angle relative to the chassis 100. In this embodiment, the first angle is 0°. That is, the inner side of the end wall 210 is placed downward on the chassis 100. Figure 3 As shown in FIG. 1 , the vertical projection of the free end is a shape in which an oblique angle is cut off from a rectangle. The width of the rectangle is c, and the two sides of the cut oblique angle are a and b respectively. Figure 5 As shown, the vertical opening shape of the first top opening 311 matches the vertical projection shape of the free end. Specifically, the vertical opening shape of the first top opening 311 is also a shape with an oblique angle cut off from a rectangle, the width of the rectangle is c1, and the two sides of the cut oblique angle are a1 and b1 respectively. Moreover, a1>a, b1>b, c1>c. In other words, the vertical projection of the free end of the first connecting shaft 320 is located within the vertical opening range of the first top opening 311. At this time, as Figure 6 As shown, the free end of the first connecting shaft 320 is inserted into the first groove 310 from the first top opening 311 and moved downward in the first groove 310 along the first side opening 312, thereby completing the installation.

[0045] Preferably, if Figure 6 As shown, the vertical opening range of the first top opening 311 is slightly larger than the vertical projection of the free end of the first connecting shaft 320, that is, there is a gap between the first top opening 311 and the free end of the first connecting shaft 320. However, the gap should be as small as possible while ensuring the installation of the end wall 210 and the chassis 100, so as to prevent the free end of the first connecting shaft 320 from withdrawing from the first top opening 311 when the end wall 210 is tilted at other angles relative to the chassis 100, causing the end wall 210 to detach from the chassis 100.

[0046] After the end wall 210 is installed, the end wall 210 is in the folded position. During use, the end wall 210 can be tilted at a second angle relative to the chassis 100, and the second angle is different from the first angle. In this embodiment, the second angle can be any angle except 0°. In actual use, the second angle can be arbitrarily selected within the range of greater than 0° and less than or equal to 180°. Preferably, it can be arbitrarily selected within the range of greater than 0° and less than or equal to 90°. When the second angle is 90°, the end wall 210 is in the assembly position. At this time, the vertical projection of the free end of the first connecting shaft 320 is a rectangle, and the vertical opening of the first top opening 311 is a shape in which an oblique angle is cut from a rectangle. That is, the vertical projection of the free end of the first connecting shaft 320 is partially located outside the vertical opening range of the first top opening 311, so that the free end is blocked by the side wall of the first top opening 311. Specifically, the free end is blocked by the oblique angle portion above the first top opening 311 and cannot exit from the first top opening 311. It can be understood by those skilled in the art that the first groove 310 does not have a constant cross-sectional area in the extension direction, but a space with a cross-sectional area larger than the first top opening 311 exists at a specific position below the first top opening 311 to accommodate the free end to rotate freely to a state where it is blocked and cannot be withdrawn. In this way, when the end wall 210 is in the unfolded position, the end wall 210 cannot be removed from the chassis 100. Preferably, when the end wall 210 is in the assembled position, the end wall 210 cannot be removed from the chassis 100.

[0047] When removing the end wall 210, the end wall 210 must be tilted at a specific first angle relative to the chassis 100. In this embodiment, the first angle is 0°, and the first connecting shaft 320 can exit the first groove 310 from the first top opening 311, so that the end wall 210 can be removed from the chassis 100. Conversely, the end wall 210 must be tilted at the first angle relative to the chassis 100 so that the first connecting shaft 320 can enter the first groove 310 from the first top opening 311, so that the end wall 210 can be installed on the chassis 100. If the end wall 210 is tilted at another angle different from the first angle relative to the chassis 100, the first connecting shaft 320 cannot enter the first groove 310 from the first top opening 311, so that the end wall 210 cannot be installed on the chassis 100.

[0048] Alternatively, if Figure 7As shown, the cut-off portion of the free end of the first connecting shaft 320 can also be a structure in which a right angle is cut off from a cylinder. The right angle structure has two side surfaces, both of which are perpendicular to the inner side surface of the end wall 210. In other embodiments, the right angle structure can also be located directly above the free end. It can be understood that the cut-off portion of the free end can also be set to other shapes, such as cutting off two oblique angles or two right angles from a cylinder, as long as the following conditions are met: when the end wall 210 is tilted at a first angle relative to the chassis 100, the vertical projection of the free end of the first connecting shaft 320 is located within the vertical opening range of the first top opening 311, and when the end wall 210 is tilted at a second angle relative to the chassis 100, the vertical projection of the free end of the first connecting shaft 320 is partially located outside the vertical opening range of the first top opening 311.

[0049] Optionally, the first angle can be set to an angle other than 0°, for example, within a range greater than 0° and less than 180°, and preferably does not include 90°. When the end wall 210 is rotated to the set angle, the vertical projection of the free end of the first connecting shaft 320 is within the vertical opening range of the first top opening 311, and the free end can enter or exit the first groove 310 from the first top opening 311, thereby installing or removing the end wall 210. At this time, the inclined surface 321 of the cut portion is not perpendicular to the inner side surface of the end wall 210, but forms other angles. The advantage in this case is that the end wall 210 and the side wall 220 cannot be loaded and unloaded in the folded position and the assembled position, so it is less likely to be disassembled by mistake. The disadvantage is that it is relatively inconvenient to disassemble during maintenance or replacement.

[0050] In addition, if Figure 4B As shown, the first connection mechanism further includes a baffle 330, which is disposed on the chassis 100 and is perpendicular to the chassis 100. Specifically, the baffle 330 can be disposed on the first corner column 110, or formed integrally with the first corner column 110. The baffle 330 is parallel to the end wall 210 in the assembly position and is provided with a protrusion 331 (an example of a first matching portion). The protrusion 331 protrudes toward the end wall 210 and is perpendicular to the end wall 210 when the end wall 210 is in the assembly position. Accordingly, as shown in FIG. Figure 3 As shown, the end wall 210 is provided with a through hole 212 that can be engaged with the protrusion 331. When the end wall 210 is rotated to the assembly position, the protrusion 331 cooperates with the through hole 212, so that the end wall 210 cannot move up and down in the direction perpendicular to the chassis 100, and the end wall 210 abuts against the baffle 330, so that the end wall 210 can only rotate to 90° relative to the chassis 100, that is, the end wall 210 can only rotate to the assembly position perpendicular to the chassis 100.

[0051] The connection device may include only one first connection mechanism, that is, the first connection shaft 320 of the first lower corner piece on one side of the end wall 210 is connected to the first corner column 110 of the chassis 100 through the first connection mechanism. In this case, the connection shaft of the lower corner piece on the other side of the end wall 210 and the corresponding corner column may be connected through other connection methods. For example, the fourth connection shaft 320A on the other side of the end wall 210 is a cylindrical structure, and a groove is provided on the corresponding corner column. The groove only has a side opening and no top opening. In this case, the fourth connection shaft 320A is first inserted into the corresponding groove, and then the free end of the first connection shaft 320 is aligned with the first top opening 311, so that the free end enters the first groove 310. Thus, the installation of the end wall 210 is completed.

[0052] The connection device may also include a plurality of first connection mechanisms. In this case, the connection shafts on both sides of the end wall 210 are connected to the corresponding corner columns through the first connection mechanism. Alternatively, both end walls 210 are connected to the chassis 100 through such a connection mechanism.

[0053] In the above description, only the end wall 210 is used as an example. Those skilled in the art can understand that the side wall 220 can also be connected to the chassis 100 through such a connection structure. That is, any one or all of the two end walls 210 and the two side walls 220 can be connected to the chassis 100 through such a connection structure. The description thereof is omitted here.

[0054] This structure effectively solves the problem that the end wall 210 and the side wall 220 of the pallet box are easily lost during use. It is simple and convenient for workers to operate and improves the service life of the pallet box. At the same time, when replacing or repairing the side panels, no tools are required. The loading and unloading can be completed by inserting or removing the side panels at a set angle, which improves the efficiency of replacement or repair.

[0055] In this embodiment, the connection device of the pallet box further includes a second connection mechanism. One side wall 220A (an example of a second side plate) of the two side walls 220 is connected to the chassis 100 via the second connection mechanism.

[0056] Next, the second connection mechanism will be described. Figure 8As shown, the second connection mechanism includes a second groove (not shown), a third groove 350, a second connection shaft (not shown), and a third connection shaft 360. The second groove is provided in the second corner column 120 in a direction extending in a vertical direction relative to the chassis, and has a second side opening (not shown) opened toward the side wall 220A, and a second side notch 340 opened toward the outside of the side wall 220A and connected to the second side opening. The third groove 350 is provided in the third corner column 130 in a direction extending in a vertical direction relative to the chassis, and has a third side opening (not shown) opened toward the side wall 220A. The second connecting shaft is disposed on the second lower corner piece of the side wall 220A corresponding to the second corner column 120 and protrudes outward from the second lower corner piece, so that the second connecting shaft can enter and exit the second groove from the second side notch 340 and move up and down in the second groove along the second side opening; the third connecting shaft 360 is disposed on the third lower corner piece of the side wall 220A corresponding to the third corner column 130 and protrudes outward from the third lower corner piece, so that the third connecting shaft 360 can enter and exit the third groove 350 from the third side opening and move up and down in the third groove 350 along the third side opening. The second connecting shaft and the third connecting shaft 360 are both cylindrical connecting shafts with the same shape and are symmetrically disposed on the side wall 220A. The second connecting shaft and the third connecting shaft 360 rotate simultaneously in the second groove and the third groove 350, so that the side wall 220A can rotate relative to the chassis 100.

[0057] The second side notch 340 is disposed on the side wall of the second corner column 120 and extends along the axial direction of the second connecting shaft. In addition, since the second side notch 340 is open toward the outside of the side wall 220A, the second connecting shaft can enter and exit the second groove through the second side notch 340 only when the side wall 220A is tilted at a certain angle toward the outside of the foldable pallet box.

[0058] In addition, a fourth groove is provided at the edge of the chassis 100 between the second corner column 120 and the third corner column 130. The fourth groove is a long strip-shaped groove provided along the edge of the chassis 100 and can receive the bottom of the side wall 220A. When the bottom of the side wall 220A is inserted downward into the fourth groove to a predetermined depth and supported in the fourth groove, the side wall 220A can rotate relative to the chassis 100 and remain in a position tilted toward the outside of the foldable pallet box.

[0059] In addition, if Figure 8As shown, the first corner post 110 and the second corner post 120 may be the same corner post, that is, the second corner post has both the first groove 310 and the second groove. In this case, the first connecting shaft 320 on one side of the end wall 210 is connected to the first groove 310 of the second corner post, the second connecting shaft on one side of the side wall 220A is connected to the second groove of the corner post, and the third connecting shaft 360 on the other side of the side wall 220A is connected to the third groove 350 of the third corner post 130 adjacent to the second corner post. In this way, the end wall 210 and the side wall 220A can be connected to the chassis 100 through the same corner post. In other embodiments, the first corner post 110 and the third corner post 130 may also be the same corner post. Alternatively, the first corner post 110, the second corner post 120, and the third corner post 130 are corner posts that are separately provided.

[0060] Next, the attachment and removal of the side wall 220A will be described.

[0061] First, the side wall 220A is lifted and tilted to a certain angle outside the pallet box, and then the third connecting shaft 360 is obliquely inserted into the third groove 350 of the third corner column 130, and then the second connecting shaft is inserted into the second groove of the second corner column 120 from the second side notch 340, and then the side wall 220A is moved downward, so that the second connecting shaft moves downward along the second side opening and the third connecting shaft 360 moves downward along the third side opening, at this time, the second connecting shaft and the third connecting shaft 360 can rotate simultaneously in the second groove and the third groove 350, so that the side wall 220A can rotate relative to the chassis 100. The bottom of the side wall 220A is inserted downward into the fourth groove to a predetermined depth, so that the side wall 220A can be supported in the fourth groove, so that when the side wall 220A rotates relative to the chassis 100 to tilt to a certain angle outside the pallet box, the side wall 220A is kept in a position tilted to the outside of the pallet box.

[0062] The disassembly process of the side wall 220A is opposite to the installation process, and its description is omitted for the sake of brevity. Since the second connecting shaft moves downward along the second side opening after entering the second groove from the second side notch 340, the side wall around the second side notch 340 blocks the second connecting shaft, so that the second connecting shaft cannot withdraw from the second groove. Therefore, only when the side wall 220A is tilted outward at a certain angle relative to the pallet box, can it be disassembled from the chassis 100 to facilitate loading and unloading of goods.

[0063] Next, the assembly and folding of the pallet box will be described.

[0064] When assembled, Fig. 9As shown, the two end walls 210, the side wall 220A, and the side wall 220B are respectively installed on the chassis 100. At this time, the two end walls 210, the side wall 220A, and the side wall 220B are all stacked on the chassis 100, and then the two end walls 210, the side wall 220A, and the side wall 220B are respectively rotated to the assembly position, and the end walls 210 and the side walls 220 adjacent to each other are connected by the locking mechanism 400 set on the end wall 210, as shown in FIG. Figure 8 As shown, the end wall 210, the side wall 220 and the bottom plate 100 are integrated into a complete pallet box.

[0065] When loading and unloading goods, the locking mechanism 400 is opened and the side wall 220A is tilted outward from the pallet box. As described above, in this state, the side wall 220A can be disassembled and installed to facilitate loading and unloading of goods, while the other side wall 220B and the two end walls 210 cannot be disassembled.

[0066] When the folding operation is required, the locking mechanism 400 is first opened, and the two end walls 210 are laid down in no particular order, and then the side walls 220A and 220B are laid down in no particular order. Fig. 9 As shown, the folding operation is completed. The folded pallet box can be transported or stored to increase the transportation volume and reduce the warehouse floor space.

[0067] In this embodiment, the side wall 220A can be disassembled when it is tilted outward relative to the pallet box, that is, it can be disassembled during the process of loading and unloading goods, while the end wall 210 and the side wall 220B must be in the folded position before they can be disassembled. This reduces the number of end walls and side walls that can be disassembled during use, avoiding the possibility of accidental disassembly and loss during loading and unloading of goods.

[0068] This solves the problem of the end wall and side wall being lost during the use of the pallet box.

[0069] In addition, the first connecting shaft 320, the second connecting shaft and the third connecting shaft 360 in the present invention can be formed integrally with the end wall 210 or the side wall 220 without the use of a threaded connection or other movable connection, thereby simplifying the manufacturing process.

[0070] 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 "component" and the like appearing herein may represent either a single part or a combination of multiple parts. Terms such as "installation" and "setting" and the like appearing herein may represent either a component being directly attached to another component or a component being attached to another component through an intermediate. Features described herein 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.

[0071] 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 foldable pallet box, characterized in that: include: A chassis, wherein the chassis is provided with corner columns at four corners respectively; Side panels, each of which is provided with lower corner pieces on both sides; and A connecting device for connecting the chassis and the side panels so that the side panels have an assembled position and a folded position relative to the chassis; Wherein, the connecting device comprises at least one first connecting mechanism for connecting the first side plate and the chassis, The first connecting mechanism comprises: a first groove, the first groove being arranged in the first corner column extending in a vertical direction relative to the chassis and having a first top opening and a first side opening communicating with the first top opening and opening toward the first side panel; and a first connecting shaft, the first connecting shaft having a connecting end and a free end, the connecting end being fixedly arranged at a first lower corner piece at one end of the first side plate and the free end protruding outward from the first lower corner piece, so that the free end can enter the first groove from the first top opening and move up and down in the first groove along the first side opening, and the free end can rotate in the first groove, so that the first side plate can rotate relative to the chassis, and the free end is a cylinder with a cut-off portion, When the first side plate is tilted at a first angle relative to the chassis, the vertical projection of the free end of the first connecting shaft is located within the vertical opening range of the first top opening, so that the free end can enter and exit from the first top opening. When the first side plate is tilted at a second angle relative to the chassis, a vertical projection of the free end of the first connecting shaft is partially located outside the vertical opening range of the first top opening, so that the free end is blocked by the side wall of the first top opening and cannot enter or exit from the first top opening. The first angle is different from the second angle.

2. The foldable pallet box according to claim 1, wherein: When the second angle is 90°, the first side panel is in the assembled position.

3. The foldable pallet box according to claim 1, wherein: When the first angle is 0°, the first side panel is in a folded position.

4. The foldable pallet box according to claim 1, wherein: The cut-off portion has a cut-off surface perpendicular to the inner side surface of the first side plate.

5. The foldable pallet box according to claim 1, wherein: The first connecting mechanism also includes a baffle plate arranged on the chassis and a first matching portion arranged on the first side plate. The baffle is parallel to the first side plate located at the assembly position, and is provided with a second matching portion corresponding to the first matching portion. When the first side plate is in the assembled position, the first matching portion matches with the second matching portion and the first side plate abuts against the baffle, so that the first side plate is fixed on the chassis.

6. The foldable pallet box according to claim 5, wherein: The second matching portion is a protrusion, the protrusion is perpendicular to the baffle, and the first matching portion is a through hole capable of engaging with the protrusion.

7. The foldable pallet box according to claim 1, wherein: The upper end of the first corner column has a stacking limiter for supporting the first side panel when the first side panel is located at the assembly position. The stacking limiter has a bottom plate, the bottom plate is sealed on the top of the first groove, and the first top opening is formed on the bottom plate.

8. The foldable pallet box according to claim 1, wherein: The connecting device further comprises a second connecting mechanism for connecting the second side plate and the chassis. The second connecting mechanism comprises: a second groove, the second groove being arranged in the second corner column extending along a vertical direction relative to the chassis and having a second side opening opened toward the second side plate, and a second side notch opened toward the outer side of the second side plate and communicating with the second side opening; a third groove, the third groove being arranged in the third corner column extending along a vertical direction relative to the chassis and having a third side opening opened toward the second side panel; a second connecting shaft, the second connecting shaft being disposed on a second lower corner piece of the second side plate corresponding to the second corner column and protruding outward from the second lower corner piece, so that the second connecting shaft can enter and exit the second groove from the second side notch and move up and down in the second groove along the second side opening; and a third connecting shaft, the third connecting shaft being arranged on a third lower corner piece of the second side plate corresponding to the third corner column and protruding outward from the third lower corner piece, so that the third connecting shaft can enter and exit the third groove from the third side opening and move up and down in the third groove along the third side opening, The second connecting shaft and the third connecting shaft rotate in the second groove and the third groove simultaneously, so that the second side plate is rotatable relative to the chassis.

9. The foldable pallet box according to claim 8, wherein: The second corner column is the same corner column as the first corner column, or the third corner column is the same corner column as the first corner column.

10. The foldable pallet box according to claim 8, wherein: A fourth groove is provided at the edge of the chassis between the second corner column and the third corner column. The bottom of the second side panel is inserted downward into the fourth groove to a predetermined depth and is supported in the fourth groove, so that when the second side panel is rotated relative to the bottom chassis to tilt out of the foldable pallet box, the second side panel remains in a position tilted out of the foldable pallet box.

11. The foldable pallet box according to any one of claims 1 to 10, wherein: The side plate is a side wall arranged on the side of the chassis, or an end wall arranged on the end surface of the chassis.

12. The foldable pallet box according to any one of claims 1 to 10, further comprising a locking mechanism, wherein the locking mechanism is provided on the side panels and locks two adjacent side panels when the side panels are located at the assembled position.

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