Container

Abstract

To provide a container that can stabilize an attachment state of a side wall component without reducing a storage size and can improve durability.SOLUTION: A container 1 comprises a pallet 2 and a side wall component 3 in a shape of a rectangular tube. The side wall component 3 includes side plates 23, 24 having cutout portions, accommodated portions accommodated in the cutout portions, and protrusions 45, 63, 73 protruding from the accommodated portions, and includes protrusion members 41, 61, 71 having higher rigidity than the side plates 23, 24, and frames 51, 52, 56, 57 having slits. The side plates 23, 24 and the protrusion members 41, 61, 71 have the same thickness. The accommodated portion is accommodated in the cutout portion, each protrusion 45, 63, 73 protrudes from the slit, frames 51, 52, 56, 57 are fitted into each side plate 23, 24 and fixed, and each protrusion 45, 63, 73 is inserted into openings 14A to 14D, 15A to 15D, thereby attaching the side wall component 3 to the pallet 2.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a container used for transporting goods, etc. [Background technology]

[0002] Conventionally, there has been known a container that includes a pallet that is rectangular in plan view, a square cylindrical sidewall component that extends upward along the outer periphery of the upper surface of the pallet, and a lid that can close an opening at the top of the sidewall component, the lid being configured to be detachable from the sidewall component, and the sidewall component being detachable from the pallet. Furthermore, there is a technology in which the sidewall component is configured with a sidewall component that is bendable along the outer periphery of the upper surface of the pallet, and a connecting member that connects the ends of the sidewall component (see, for example, Patent Document 1, etc.).

[0003] The container described in Patent Document 1 includes a substantially rectangular bottom plate that protrudes upward from the outer periphery of the top surface of the pallet. However, the side wall component is simply placed on the pallet with the lower portion of its outer surface abutting the inner surface of the bottom plate, which is not a stable installation. While it might be possible to achieve stability by making the bottom plate relatively thick, this would require the side wall body to be installed inward by the increased thickness, potentially reducing the storage size of the container.

[0004] On the other hand, there is a technique in which legs are provided at the lower end of the side wall body and the legs are inserted into grooves provided on the upper surface of the pallet to stabilize the container (see, for example, Patent Document 2). [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Application Publication No. 9-58680 [Patent Document 2] Japanese Patent Application Laid-Open No. 2011-16549 Summary of the Invention [Problem to be solved by the invention]

[0006] However, the legs of the container described in Patent Document 2 are integrally formed with the sidewalls and are made of synthetic resin corrugated cardboard, which means that there is a risk of the legs being damaged by repeatedly attaching and detaching the sidewalls to and from the pallet.

[0007] The present invention has been made to solve the problems exemplified above, and its object is to provide a container that can stabilize the attachment state of the side wall components without reducing the storage size and can improve durability. [Means for solving the problem]

[0008] The following describes each means suitable for achieving the above objects, etc., by item. Note that, as necessary, the effects and advantages specific to the corresponding means will be added.

[0009] Means 1. A pallet having a generally rectangular shape in plan view and a square cylindrical side wall component extending upward along each side of the outer periphery of the upper surface of the pallet, The side wall constituent portion is configured to be detachable from the pallet, In a container that is assembled by attaching the side wall constituent part to the pallet, The side wall component is a side plate having one or more notches at its lower end corresponding to each of the sides; a protruding member having a received portion received in the notch portion and a protrusion protruding from the received portion, the protruding member having higher rigidity than the side plate; a frame having a substantially U-shaped cross section and a slit on the underside, The thickness of the side plate and the thickness of the protruding member are equal to each other, the frame is fixed to the side plate in a state in which the accommodated portion is accommodated in the notch portion and the frame is fitted to the lower end portion of the side plate so that the protrusion protrudes from the slit, an opening into which the protrusion can be inserted is provided on the outer peripheral edge of the upper surface of the pallet; A container characterized in that the side wall constituent part is attached to the pallet with the protrusion inserted into the opening.

[0010] According to the first aspect, the side plates and the protruding members have the same thickness, and a frame with a slit is fitted and fixed in place in a cutout provided in the side plate with the accommodated portion of the protruding member accommodated in the cutout. Therefore, the inner and outer surfaces of the side plates and the protruding members are flush with each other, and the side wall constituent part can ensure a predetermined rigidity without excessively increasing the thickness of the part of the side wall constituent part that is attached to the pallet. As a result, the attached state of the side wall constituent part can be stabilized without reducing the storage size.

[0011] Furthermore, the protruding members have higher rigidity than the side plates. Therefore, even if the side wall components are repeatedly attached to and detached from the pallet, i.e., the protrusions of the protruding members are repeatedly inserted and removed from the opening of the pallet, damage to the protrusions can be prevented. As a result, the durability of the container can be improved.

[0012] In addition, a frame with a roughly U-shaped cross section is fitted to the lower end of the side plate, which protects and reinforces the lower end of the side plate, thereby further improving the durability of the container.

[0013] Means 2. The length of the slit in the direction along each side is smaller than the length of the bottom surface of the accommodated portion in the direction along each side, The container described in means 1 is characterized in that the lower surface of the contained portion is supported by the inner lower surface of the frame.

[0014] For example, when the length in the direction along each side of the slit of the frame is equal to or greater than the length in the direction along each side of the lower surface of the housing portion of the protruding member, there is a concern that the protruding member may fall off without being supported by the frame. In this regard, according to Means 2, it becomes possible to reliably support the housing portion of the protruding member by the frame, and further stabilization of the mounting state of the side wall component can be achieved.

[0015] Means 3. The notch is provided at the lower end of the side edge of the side plate, Separate from the frame, a vertical frame having a substantially U-shaped cross section or a substantially H-shaped cross section is provided, In a state where the housing portion is housed in the notch and the protrusion protrudes from the slit, and the frame is fitted into the lower end of the side plate so that the protrusion protrudes from the slit, the frame is fixed to the side plate, and The container according to Means 1 or 2, characterized in that the vertical frame is attached to the side plate in a state where the vertical frame is fitted into the side edge of the side plate and the side edge of the protruding member.

[0016] According to Means 3, the container has not only a frame fitted into the lower end of the side plate but also a vertical frame fitted into the side edge of the side plate. Therefore, the compressive strength of the entire container, particularly the compressive strength of the side edge of the side plate provided with the vertical frame, can be significantly increased. Therefore, even when the containers are stacked and a load is applied to the side wall component, deformation such as barrel bulging of the side wall component can be suppressed. As a result, it becomes possible to further improve the durability of the container.

[0017] Means 4. A pallet having a substantially rectangular shape in plan view and a side wall component extending upward along the outer peripheral edge of the upper surface of the pallet are provided, The side wall component is configured to be detachable from the pallet, In a container that is assembled by attaching the side wall component to the pallet, The side wall component includes a first side wall body and a second side wall body that are substantially U-shaped in plan view and have substantially the same shape as each other. The first side wall body and the second side wall body each include a long side plate and a pair of short side plates that extend from both ends of the long side plate and face each other, One or more notches are provided at the lower ends of the long side plate and the short side plates, respectively. It includes a housed portion to be housed in the notch and a protruding portion protruding from the housed portion, and a protruding member having higher rigidity than the long side plate and the short side plates, and a frame having a substantially U-shaped cross section and having a slit on the lower surface. The thickness of the long side plate and the short side plates is equal to the thickness of the protruding member. The frame is fixed to the long side plate and the short side plates in a state where the housed portion is housed in the notch and the protruding portion protrudes from the slit so that the frame is fitted into the lower ends of the long side plate and the short side plates. An opening into which the protruding portion can be inserted is provided at the outer peripheral edge of the upper surface of the pallet. The side wall component is attached to the pallet in a state where the protruding portion is inserted into the opening. In either the first side wall body or the second side wall body, the side edge portion of the short side plate is fitted into one groove of a vertical frame having a substantially H-shaped cross section, and the side edge portion of the short side plate and the vertical frame are fixed by fixing means. A container, wherein in either the first side wall body or the second side wall body, the side edge portion of the short side plate is fitted into the other groove of the vertical frame.

[0018] According to means 4, the same operational effects as those of the invention described in means 1 are achieved. In either the first side wall body or the second side wall body, for a vertical frame having a substantially H-shaped cross section, the connection can be completed simply by fitting the side edge portion of the other short side plate into the groove. Therefore, the assembly work of the container can be performed smoothly, and the assembly workability can be improved.

[0019] Additionally, the provision of the vertical frame dramatically increases the compressive strength of the entire container, particularly the compressive strength of the connection between the first and second side walls. Therefore, even when containers are stacked on top of each other and a load is applied to the side wall components, deformation such as bulging of the body of the side wall components can be suppressed. [Brief explanation of the drawings]

[0020]

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[0021] An embodiment will be described below with reference to the drawings. As shown in Figures 1, 2, etc., container 1 (box pallet) comprises a pallet 2 that is square in plan view, a square cylindrical side wall constituent part 3 that extends upward along the outer periphery of the top surface of pallet 2, and a lid 4 that can close an opening at the top of side wall constituent part 3, with lid 4 configured to be detachable from side wall constituent part 3, and side wall constituent part 3 configured to be detachable from pallet 2. Furthermore, container 1 is assembled by placing and attaching side wall constituent part 3 to pallet 2 and then covering side wall constituent part 3 with lid 4.

[0022] The pallet 2 has a plurality of pillars 11. Fork insertion sections 12 are formed between the pillars 11, allowing forks of a forklift, hand lift, or the like to be inserted. In this embodiment, the pallet 2 has a four-way insertion type pallet shape, allowing forks to be inserted from each of the four side surfaces of the pallet 2. As shown in Figures 6, 12, 18, etc., the underside of the pallet 2 is provided with bottom openings 13 that correspond to the positions where the fork insertion sections 12 intersect, allowing casters of a hand lift to rest on the ground.

[0023] Also, as shown in FIG. 2 and the like, eight openings 14A, 14B, 14C, 14D, 15A, 15B, 15C, and 15D for attaching the side wall component 3 are provided on the upper surface of the pallet 2 (column portion 11). In this embodiment, each of the openings 14A to 14D and 15A to 15D has the same size and the same shape. Further, the opening 14A and the opening 15D, the opening 14B and the opening 15C, the opening 14C and the opening 15B, and the opening 14D and the opening 15A are provided at point-symmetrical positions around the center of the pallet 2. Incidentally, the pallet 2 is made of polypropylene.

[0024] As shown in FIGS. 1, 2 and the like, the side wall component 3 includes a first side wall body 21 and a second side wall body 22 that are substantially the same shape as each other and are U-shaped in a plan view. Each of the side wall bodies 21 and 22 includes a long side plate 23 and a pair of short side plates 24 that extend from both ends of the long side plate 23 and face each other. Further, the long side plate 23 has a width slightly shorter than the length of one side of the upper surface of the pallet 2, and the short side plate 24 has a width slightly shorter than half the length of one side of the upper surface of the pallet 2 and is bendably connected to both ends of the long side plate 23. Furthermore, a handle hole 25 is provided in the upper portions of the long side plate 23 and the short side plate 24. Incidentally, each of the side wall bodies 21 and 22 is made of corrugated cardboard made of polypropylene.

[0025] As shown in FIG. 3 and the like, the first side wall body 21 includes, in addition to the long side plate 23 and the short side plate 24, a first positioning projection member 31, a first projection member 41, and frames 51 and 52 having a substantially U-shaped cross section.

[0026] More specifically, a notch 23A is formed at the center of the lower end of the long side plate 23, and a notch 24A is formed near the lower end side edge of the short side plate 24.

[0027] The first positioning protrusion member 31 includes a rectangular plate-shaped accommodated portion 32 and a pair of first positioning protrusions 33 protruding from the accommodated portion 32. The first protrusion member 41 includes a rectangular plate-shaped accommodated portion 42 and an L-shaped protrusion 45 protruding from the accommodated portion 42, having a hanging portion 43 and an engaging portion 44, and forming an L-shaped plate shape. The first positioning protrusion member 31 and the first protrusion member 41 are both made of solid polypropylene and are more rigid than the long side side plates 23 and the short side side plates 24. The long side side plates 23, the short side side plates 24, the first positioning protrusion member 31, and the first protrusion member 41 have the same thickness.

[0028] The frames 51 and 52, each having a substantially U-shaped cross section, are made of polypropylene and formed by extrusion molding. Slits 53 and 54 are formed in the bottom wall of each frame 51 and 52 to allow the first positioning protrusion 33 and the L-shaped protrusion 45 to pass through.

[0029] 3, 4, 5, etc., with accommodated portion 32 of first positioning protrusion member 31 accommodated in cutout portion 23A of long-side side plate 23 and accommodated portion 42 of first protrusion member 41 accommodated in cutout portion 24A of short-side side plate 24, frames 51, 52 having a generally U-shaped cross section are fitted into the lower ends of long-side side plate 23 and short-side side plate 24. Furthermore, with first positioning protrusion 33 and L-shaped protrusion 45 protruding from slits 53, 54, frames 51, 52 are in an attached state. In this embodiment, engaging portion 44 of L-shaped protrusion 45 extends from hanging portion 43 toward long-side side plate 23. Furthermore, by driving rivets 26 as fixing means, the first positioning protrusion member 31, the first protrusion member 41, and the frames 51, 52 are fixed at the lower ends of the long-side side plate 23 and the short-side side plate 24. The length of the slits 53, 54 in the direction along each side is shorter than the length of the lower surface of each accommodated portion 32, 42 in the direction along each side. Therefore, the lower surface of each accommodated portion 32, 42 is supported by the inner lower surface (bottom wall) of each frame 51, 52. The length of the L-shaped protrusion 45 in the extension direction is approximately equal to the length of the openings 14A, 14D.

[0030] As shown in Figures 9, 10, 14, etc., the second side wall body 22 includes, in addition to the long side side plate 23 and the short side side plate 24, a second positioning protrusion member 61, a second protrusion member 71, and frames 56 and 57 having an approximately U-shaped cross section.

[0031] More specifically, a notch (not shown) similar to the notch 23A is formed in the center of the lower end of the long side side plate 23, and a notch 24B is formed in the lower edge of the short side side plate 24.

[0032] Similarly to the first positioning protrusion member 31, the second positioning protrusion member 61 includes a rectangular plate-shaped accommodated portion (not shown) and a pair of second positioning protrusions 63 protruding from the accommodated portion. The second protrusion member 71 includes a rectangular plate-shaped accommodated portion 72 and one insertion protrusion 73. The second positioning protrusion member 61 and the second protrusion member 71 are both made of solid polypropylene and are more rigid than the long side side plate 23 and the short side side plate 24. The long side side plate 23, the short side side plate 24, the second positioning protrusion member 61, and the second protrusion member 71 have the same thickness.

[0033] The frames 56 and 57, each having a generally U-shaped cross section, have the same shape as the frames 51 and 52, and are made of polypropylene and formed by extrusion molding. As shown in Figure 14, etc., the bottom wall of each frame 56 and 57 is formed with slits 58 and 59 that allow the second positioning protrusion 63 and the insertion protrusion 73 to pass through.

[0034] 9, 10, 11, 14, etc., with the receiving portion (not shown) of the second positioning protrusion member 61 received in the notch portion (not shown) of the long-side side plate 23 and the receiving portion 72 of the second protrusion member 71 received in the notch portion 24B of the short-side side plate 24, the frames 56, 57 having a generally U-shaped cross section are fitted into the lower ends of the long-side side plate 23 and the short-side side plate 24. Furthermore, with the second positioning protrusion 63 and the insertion protrusion 73 protruding from the slits 58, 59, the frames 56, 57 are attached. Furthermore, the second positioning protrusion member 61, the second protrusion member 71, and the frames 56, 57 are fixed to the lower ends of the long-side side plate 23 and the short-side side plate 24 by driving the rivets 26. The length of the slits 58, 59 in the direction along each side is smaller than the length of the accommodated portion (not shown) and the lower surface of the accommodated portion 72 in the direction along each side. Therefore, the lower surfaces of the accommodated portion (not shown) and the accommodated portion 72 are supported by the inner lower surfaces (bottom walls) of the frames 56, 57. In addition, when the second protruding member 71 is fixed, the side edge of the second protruding member 71 and the side edge of the short side plate 24 are arranged on the same straight line.

[0035] 9, 10, 11, etc., the second side wall 22 is provided with a connecting member 76 having an H-shaped cross section as a vertical frame. The connecting member 76 is made of polypropylene and formed by extrusion molding. In this embodiment, the side edge of the short-side side plate 24 of the second side wall 22 is fitted into one groove of the connecting member 76, and the connecting member 76 is fixed by driving a rivet 26. The side edge of the short-side side plate 24 of the second side wall 22 is fitted into the other groove of the connecting member 76 (see FIG. 1, etc.).

[0036] As shown in Figures 2, 13, 14, etc., an opening 80 is formed in the long side panel 23 of the second side wall body 22, and a door section 81 is provided corresponding to the opening 80. The door section 81 includes a door panel 82, a door frame 83 provided on the side edges and the lower end of the door panel 82, and slide lock sections 84 provided on both ends of the upper end of the door panel 82. In this embodiment, by sliding the slide lock sections 84 in directions toward each other, the door section 81 is in a closed state as shown in Figure 2, etc., and by sliding them in directions away from each other, the door section 81 is in an open state as shown in Figures 13, 14, etc.

[0037] As shown in Figures 1, 15, 16, etc., the lid 4 includes a rectangular top plate 91 and top side plates 92 that protrude downward from each side edge of the top plate 91. The lid 4 of this embodiment is constructed by cutting a single piece of polypropylene corrugated cardboard into an unfolded shape, bending the top side plates 92 downward by 90 degrees relative to the top plate 91, and connecting the top side plates 92 to each other with corner members 93. Furthermore, a lid frame 94 with a generally H-shaped cross section is attached to the lower end of each top side plate 92. The corner members 93 and the lid frame 94 are fixed together by driving rivets 26.

[0038] As shown in FIGS. 17 and 18 , the lid 4 has four upper lid projections 95 that are L-shaped in plan view and protrude upward from the top surface of the top plate 91. The four upper lid projections 95 are provided at four locations corresponding to positions above the intersections of the fork insertion sections 12. When stacking containers 1 vertically, the upper lid projections 95 of the lid 4 of the lower container 1 are inserted into the lower openings 13 of the pallet 2 of the upper container 1. This prevents relative horizontal displacement between the upper and lower containers 1. Furthermore, the container 1 of this embodiment can be compactly assembled with the pallet 2 and the lid 4 when transporting or storing the container 1 without containing any items. In the state shown in FIGS. 17 and 18 , the first side wall 21 and the second side wall 22 may be folded and stored in the "space" between the pallet 2 and the lid 4.

[0039] Next, a method for assembling the container 1 will be described. For the first side wall 21, the first positioning protrusion member 31, the first protrusion member 41, and the frames 51, 52 are attached to the lower ends of the long-side side plate 23 and the short-side side plate 24, and rivets 26 are driven into them, thereby securing them in place. Similarly, for the second side wall 22, the second positioning protrusion member 61, the second protrusion member 71, and the frames 56, 57 are attached to the lower ends of the long-side side plate 23 and the short-side side plate 24, and rivets 26 are driven into them, thereby securing them in place. Additionally, one groove of the connecting member 76 is fitted into the side edge of the short-side side plate 24 of the second side wall 22, and rivets 26 are driven into them, thereby securing them in place.

[0040] Next, as shown in FIGS. 6, 7, etc., after inserting the first positioning protrusion 33 of the first side wall body 21 into the first positioning openings 14B and 14C of the pallet 2, the first side wall body 21 is tilted in a direction approaching the pallet 2, so that the L-shaped protrusion 45 of the first side wall body 21 is inserted into the openings 14A and 14D of the pallet 2. Then, as shown in FIG. 8, etc., together with the L-shaped protrusion 45 inserted into the openings 14A and 14D, the first side wall body 21 is slid in a direction opposite to the extending direction of the short side plate 24 [the right direction in FIG. 8 (refer to the arrow)]. By this sliding, the top wall of the pallet 2 will be positioned above the engaging portion 44 of the L-shaped protrusion 45, and the engaging portion 44 of the L-shaped protrusion 45 will be in an engaged state with respect to the pallet 2.

[0041] Thereafter, as shown in FIGS. 12, etc., after inserting the second positioning protrusion 63 of the second side wall body 22 into the second positioning openings 15B and 15C of the pallet 2, the second side wall body 22 is tilted in a direction approaching the pallet 2, so that the insertion protrusion 73 of the second side wall body 22 is inserted into the openings 15A and 15D of the pallet 2, and at the same time, the side edge portion of the short side plate 24 of the first side wall body 21 is fitted into the other groove of the connecting member 76. Through these series of steps, the first side wall body 21 and the second side wall body 22 will be attached to the pallet 2. And finally, as shown in FIG. 1, etc., by appropriately covering the upper part of the side wall component 3 with the lid body 4, the container 1 will be in an assembled state. At this time, the handle hole 25 is blocked by the lid frame 94, etc.

[0042] As described above in detail, according to this embodiment, the side plates 23, 24 and the protruding members 31, 41, 61, 71 have the same thickness, and frames 51, 52, 56, 57 having slits 53, 54, 58, 59 are fitted and fixed in a state in which the accommodated portions 32, 42, (not shown), 72 of the protruding members 31, 41, 61, 71 are accommodated in the cutout portions 23A, (not shown), 24A, 24B provided in the side plates 23, 24. Therefore, in the side wall constituent part 3, the inner and outer surfaces of the side plates 23, 24 and the protruding members 31, 41, 61, 71 are flush with each other, and a predetermined rigidity can be ensured without excessively increasing the thickness of the protrusions 33, 45, 63, 73 of the side wall constituent part 3 that are attached to the pallet 2. As a result, the mounting state of the side wall constituent part 3 can be stabilized without reducing the storage size.

[0043] Furthermore, for example, if the length of the slits 53, 54, 58, and 59 of the frames 51, 52, 56, and 57 along each side is equal to or greater than the length of the accommodated portions 32, 42, (not shown), and 72 of the protruding members 31, 41, 61, and 71 along each side of the lower surface thereof, there is a concern that the protruding members 31, 41, 61, and 71 may fall off without being supported by the frames 51, 52, 56, and 57. In this regard, according to this embodiment, the length of the slits 53, 54, 58, and 59 along each side is smaller than the length of the accommodated portions 32, 42, (not shown), and 72 along each side of the lower surface thereof. Therefore, the accommodated portions 32, 42, (not shown), and 72 of the protruding members 31, 41, 61, and 71 can be reliably supported by the frames 51, 52, 56, and 57 (bottom walls thereof), thereby further stabilizing the mounting state of the side wall constituent portion 3.

[0044] Furthermore, the protruding members 31, 41, 61, and 71 of this embodiment have higher rigidity than the side plates 23 and 24. Therefore, even if the side wall component 3 is repeatedly attached to and detached from the pallet 2, i.e., the protruding portions 33, 45, 63, and 73 of the protruding members 31, 41, 61, and 71 are repeatedly inserted into and removed from the openings 14A-14D and 15A-15D of the pallet 2, damage to the protruding portions 33, 45, 63, and 73 can be prevented. In addition, the lower ends of the side plates 23 and 24 are fitted with frames 51, 52, 56, and 57 having a generally U-shaped cross section, which protects and reinforces the lower ends of the side plates 23 and 24. As a result, the durability of the container 1 can be improved.

[0045] Furthermore, the container 1 has not only frames 51, 52, 56, and 57 fitted into the lower ends of the side plates 23 and 24, but also connecting members 76 fitted into the side edges of the side plates 23 and 24. This dramatically increases the compressive strength of the entire container 1, particularly the compressive strength of the side edges of the side plates 23 and 24 where the connecting members 76 are provided. Therefore, even when the containers 1 are stacked on top of each other and a load is applied to the side wall constituent parts 3, deformation such as bulging of the body of the side wall constituent parts 3 can be suppressed. As a result, the durability of the container 1 can be further improved.

[0046] Additionally, according to this embodiment, the first side wall 21 can be connected to the connecting member 76, which has a generally H-shaped cross section, simply by fitting the side edge of the short-side side plate 24 into the groove. This allows the assembly of the container 1 to be carried out smoothly, improving the efficiency of the assembly work.

[0047] Also, during the assembly operation of the container 1, by inserting the L-shaped protrusion 45 of the first side wall body 21 into the openings 14A and 14D of the pallet 2 and sliding it, the first side wall body 21 and the pallet 2 are brought into an engaged state. Therefore, when the first side wall body 21 is attached to the pallet 2, the vertical movement of the first side wall body 21 with respect to the pallet 2 is restricted, and a situation where the first side wall body 21 is fanned by the wind and falls over can be prevented. Thus, by attaching the first side wall body 21 to the pallet 2 in advance, when attaching the second side wall body 22 to the pallet 2, the second side wall body 22 can be attached to the pallet 2 without worrying about the first side wall body 21 falling over. As a result, even a single person can easily perform the assembly operation of the container 1.

[0048] Furthermore, in the present embodiment, a fork insertion portion 12 is provided in a direction corresponding to the sliding direction of the L-shaped protrusion 45, and the fork insertion portion 12 opens facing the tip of the engaging portion 44. Therefore, for example, a fork can be inserted from the right side (long side plate 23 side) of the pallet 2 shown in FIG. 8. In that case, the pallet 2 lifted by a forklift and in a tilted state will slope downward from the left side to the right side of FIG. 8 (toward the forklift side), and the engaging portion 44 of the L-shaped protrusion 45 inserted into the openings 14A and 14D will receive stress in a direction (right side direction of the pallet 2) that makes the engagement state even stronger according to gravity. Therefore, when transporting the container 1 with a forklift, the engaging portion 44 can be brought into an even stronger engaging state. Also, in this case, since a door portion 81 is provided on the long side plate 23 of the second side wall body 22, in the tilted state, the door portion 81 will receive stress in the closing direction. Therefore, a situation where the door portion 81 accidentally opens during the transportation process can be avoided. From these facts, even more stable transportation can be realized.

[0049] Also, by appropriately covering the lid body 4 on the upper part of the side wall component 3, the handle hole 25 is blocked, so a situation where dust or the like enters the container 1 can be prevented.

[0050] The present invention is not limited to the above-described embodiment, and may be implemented as follows: Of course, other applications and modifications not exemplified below are also possible.

[0051] (a) In the above embodiment, the first side wall body 21 and the second side wall body 22 of the side wall forming portion 3 are made of corrugated cardboard made of polypropylene, but the material is not particularly limited and may be made of, for example, expanded polystyrene cardboard, paper cardboard, thin plastic plates, etc. Furthermore, the pallet 2, each protruding member 31, 41, 61, 71, each frame 51, 52, 56, 57, and connecting member 76 are made of polypropylene, but may be made of other resin materials such as polyethylene, PET, polyamide, or metal materials. However, it is desirable that the material of each protruding member 31, 41, 61, 71 has higher rigidity than the material of the first side wall body 21 and the second side wall body 22.

[0052] (b) The shapes of the pallet 2, side wall components 3, and lid 4 are not particularly limited and may be similar to those described above within the scope of achieving the intended functions and effects. For example, the pallet 2 may be rectangular in plan view having long and short sides. Furthermore, in this embodiment, the long-side side panels 23 and short-side side panels 24 of each side wall 21, 22 are integral with each other, but they may be separate components. In this case, the long-side side panels 23 and short-side side panels 24 may be connected using, for example, a frame with a substantially L-shaped cross section. Furthermore, the lid 4, handle holes 25, door 81, and the like may be omitted. Additionally, in the above embodiment, the pallet 2 may have a two-way insertion shape that allows forks to be inserted only from the two sides that form the outer periphery of the pallet 2.

[0053] (c) In the above-described embodiment, identification information such as a mark suggesting or explicitly indicating that a fork is to be inserted from the opening of the fork insertion portion 12 facing the tip of the engaging portion 44 of the L-shaped protrusion 45 may be provided on the pallet 2 or the like. Thereby, the effect such as "when transporting the container 1 with a forklift, the engaging portion 44 can be made to be in a more robust engaged state" described above can be further expected.

[0054] (d) In the above-described embodiment, the rivet 26 is used as the fixing means, but it is not particularly limited. For example, it may be possible to use a bolt and nut with a washer, a split pin, an adhesive, a screw, or the like.

[0055] (e) The number, position, and shape of each protrusion member 31, 41, 61, 71, and the openings 14A to 14D, 15A to 15D are not limited to those in the above-described embodiment. For example, a plurality of first protrusion members 41 may be provided on one short side plate 24.

[0056] (f) Although not mentioned in the above-described embodiment, the "space" can be formed by engaging (placing) the stepped portion of the lid frame 94 having an H-shaped cross section on the upper surface of the pallet 2. On the contrary, the stepped portion may be omitted, or the lid frame 94 itself may be omitted. Also, the corner member 93 may be omitted.

[0057] (g) It is also possible to attach a reinforcing frame to the upper portions of the first side wall body 21 and the second side wall body 22.

[0058] (h) In the above-described embodiment, the connecting member 76 having an H-shaped cross section is used, but it is also possible to use a vertical frame having a U-shaped cross section.

Explanation of Reference Numerals

[0059] 1...Container, 2...Pallet, 3...Side wall component, 14A to 14D...Openings, 15A to 15D...Openings, 21...First side wall body, 22...Second side wall body, 23...Long side side plate, 23A...Notch, 24...Short side side plate, 24A, 24B...Notches, 26...Rivet, 31...First positioning projection member constituting the projection member, 32...Accommodated portion, 33...First positioning projection constituting the projection, 41...First projection member constituting the projection member, 42...Accommodated portion, 45...L-shaped projection constituting the projection, 51, 52...Frames, 53, 54...Slits, 56, 57...Frames, 58, 59...Slits, 61...Second positioning projection member constituting the projection member, 63...Second positioning projection constituting the projection, 71...Second positioning projection member constituting the projection member, 72...Accommodated portion, 73...Insertion projection constituting the projection, 76...Connecting member.

Claims

1. A container comprising a pallet having a substantially rectangular shape in plan view and a rectangular tubular side wall component extending upward along each side of the outer peripheral edge of the upper surface of the pallet, wherein the side wall component is detachably configured with respect to the pallet, and the container is in an assembled state when the side wall component is attached to the pallet. In the container, the side wall component includes side plates corresponding to the respective sides and having one or more notches provided at lower end portions thereof, a housed portion housed in the notch and a protruding portion protruding from the housed portion, and a protruding member having higher rigidity than the side plates, and a frame having a substantially U-shaped cross section and having a slit on the lower surface, wherein the thickness of the side plates is equal to the thickness of the protruding member, the frame is fixed to the side plates in a state where the housed portion is housed in the notch and the protruding portion protrudes from the slit so that the frame is fitted into the lower end portion of the side plates, an opening into which the protruding portion can be inserted is provided at the outer peripheral edge of the upper surface of the pallet, and the side wall component is attached to the pallet in a state where the protruding portion is inserted into the opening.

2. The length of the slit in the direction along each side is smaller than the length of the lower surface of the housed portion in the direction along each side, and the lower surface of the housed portion is supported by the inner lower surface of the frame. The container according to claim 1, characterized in that.

3. The notch is provided at the lower end of the side edge of the side plate, and a vertical frame having a substantially U-shaped cross section or a substantially H-shaped cross section is provided separately from the frame, the frame is fixed to the side plates in a state where the housed portion is housed in the notch and the protruding portion protrudes from the slit so that the frame is fitted into the lower end portion of the side plates, and the vertical frame is attached to the side plates in a state where the vertical frame is fitted into the side edge portion of the side plates and the side edge portion of the protruding member. The container according to claim 1 or 2, characterized in that.

4. A container comprising a pallet having a substantially rectangular shape in plan view and a side wall component extending upward along the outer peripheral edge of the upper surface of the pallet, wherein the side wall component is detachably configured with respect to the pallet, and the container is in an assembled state when the side wall component is attached to the pallet. In the container, the side wall component includes a first side wall body and a second side wall body that are substantially U-shaped in plan view and have substantially the same shape as each other. The first side wall body and the second side wall body each include a long side plate and a pair of short side plates extending from both end portions of the long side plate and facing each other. One or more notches are provided at the lower end portions of the long side plate and the short side plates, respectively. It includes a housed portion housed in the notch and a protruding portion protruding from the housed portion, and a protruding member having higher rigidity than the long side plate and the short side plates. It includes a frame having a substantially U-shaped cross section and a slit on the lower surface. The thickness of the long side plate and the short side plates is equal to the thickness of the protruding member. The frame is fixed to the long side plate and the short side plates in a state where the housed portion is housed in the notch and the protruding portion protrudes from the slit so that the protruding portion protrudes from the slit. An opening into which the protruding portion can be inserted is provided at the outer peripheral edge of the upper surface of the pallet. The side wall component is attached to the pallet in a state where the protruding portion is inserted into the opening. In either one of the first side wall body or the second side wall body, the side edge portion of the short side plate is fitted into one groove of a vertical frame having a substantially H-shaped cross section, and the side edge portion of the short side plate and the vertical frame are fixed by fixing means. In the other one of the first side wall body or the second side wall body, the side edge portion of the short side plate is fitted into the other groove of the vertical frame. A container characterized by this.

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