Pallet

Abstract

It is required to suppress breakage of the beam portion when the beam portion receives an impact from the outside.SOLUTION: In the pallet 10 of the present disclosure, in the first intermediate girder part 71, a pair of connecting walls 40 connecting between the outer cylinder constituting wall 20 constituting the outer surface of the pallet 10 and the first inner wall 30 are formed. Each of the communication walls 40 is substantially parallel to the first horizontal-direction H1 and the up-down direction, and has a U-shape that is open to the first inner-wall 30 side, and the communication 40A 40 has an upper-horizontal-portion 40C that connects the upper ends of the outer cylinder constituting 40A 20 and the first inner-wall 30 to each other, a lower-horizontal-portion 40C that connects the lower ends of the outer cylinder constituting 40B 20 and the first inner-wall 30 to each other, and an outer-side-portion wall that is connected to the inner surface of the outer cylinder constituting wall 20 and connects the outer end portions of the upper-horizontal-portion wall and the lower-horizontal-portion wall to each other.SELECTED DRAWING: Figure 7

Description

[Technical Field]

[0001] The present disclosure relates to a pallet having a plurality of cylindrical beams on its outer edge, with fork insertion holes formed between adjacent beams. [Background technology]

[0002] Conventionally, a known pallet of this type is one in which the outer tube wall of the outer tube of the girder that forms the outer surface of the pallet is connected to the first inner wall within the girder by a connecting wall (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2020-117239 A (paragraph

[0022] and Figure 1, etc.) Summary of the Invention [Problem to be solved by the invention]

[0004] In the conventional pallets described above, it is necessary to prevent the beams from being damaged when the beams are subjected to an external impact. [Means for solving the problem]

[0005] One aspect of the invention made to solve the above-mentioned problems is a pallet in which cylindrical girders hang down from multiple points on the outer edge of a rectangular deck board, with fork insertion holes formed between adjacent girders, the pallet comprising: an outer tube wall of the outer tube of the girders that forms the outer surface of the pallet; a first inner wall that is arranged within the girder and faces the outer tube wall; and a pair of connecting walls that are parallel to the vertical direction and connect the outer tube wall and the first inner wall, wherein a notch is formed in the pair of connecting walls on the side of the first inner wall, and each of the pair of connecting walls has a horizontal portion extending between the upper ends or lower ends of the outer tube wall and the first inner wall, and an outer edge portion that is connected to the inner surface of the outer tube wall and extends in the vertical direction. [Effects of the Invention]

[0006] According to one aspect of the invention, a notch is formed on the first inner wall side, so that when an impact is received, such as when a fork hits the outer tube wall, the connecting wall and the outer tube wall are more likely to elastically deform, and the impact is absorbed by the elastic deformation, preventing damage to the girder. [Brief explanation of the drawings]

[0007] [Figure 1] Figure 1 is a perspective view of a pallet. [Figure 2] Figure 2 is a perspective view of the bottom side of the pallet. [Figure 3] Figure 3 is a perspective view of the first intermediate girder. [Figure 4] Figure 4 is a bottom perspective view of the first intermediate girder. [Figure 5] FIG. 5 is a perspective view of a side cross section of the first intermediate girder. [Figure 6] Figure 6 shows the horizontal cross section of the first intermediate girder. [Figure 7] Figure 7 is a perspective view of a horizontal cross section near the connecting wall of the first intermediate girder. [Figure 8] Figure 8 is a perspective view of the second intermediate girder. [Figure 9] Figure 9 shows the horizontal cross section of the second intermediate girder. [Figure 10] Figure 10 is a perspective view of the corner beam. [Figure 11] Figure 11 shows the horizontal cross section of the corner beam. DETAILED DESCRIPTION OF THE INVENTION

[0008] [First embodiment] A pallet 10 according to a first embodiment will be described with reference to Figures 1 to 11. As shown in Figure 1, the pallet 10 of this embodiment is, for example, a resin molded product molded as a single unit, and its planar shape is a rectangle that is longer in a second horizontal direction H2 perpendicular to a first horizontal direction H1, with beams at a total of nine locations, including the center, four corners, and the middles of each outer edge. The pallet 10 also has a pair of first fork insertion holes 91 that penetrate between the beams in the first horizontal direction H1, and a pair of second fork insertion holes 92 that penetrate between the beams in the second horizontal direction H2. The entire pallet 10 has a crossbar structure that can be demolded in the vertical direction.

[0009] The pallet 10 may have a square planar shape, or may be formed such that an upper portion and a lower portion are separately molded from a midpoint in the vertical direction and then integrated by gluing, welding, or the like. The pallet 10 may be configured to allow forks to be inserted from four sides, or may have only fork insertion holes extending along one horizontal direction and allow forks to be inserted from two sides. For example, the pallet 10 may be configured with beams extending along the entire length of a pair of opposing side edges and a beam located between them, with the fork insertion hole being located between the beams.

[0010] Hereinafter, when distinguishing between multiple girder sections, the central girder section of the pallet 10 will be referred to as the "central girder section 70," the girder sections at the four corners will be referred to as "corner girder sections 73," the girder sections located on both sides of the central girder section 70 in the first horizontal direction H1 will be referred to as the "first intermediate girder section 71," and the girder sections located on both sides of the central girder section 70 in the second horizontal direction H2 will be referred to as the "second intermediate girder section 72." Furthermore, when multiple types of girder sections are described together, they will be abbreviated as "girders 70-73," or simply referred to as "girders" without the reference numerals. Note that the number and configuration of the girder sections are not limited to those described above.

[0011] As shown in FIG. 1, the girder sections 70-73 are structured with inner walls 70W-73W inside outer cylindrical walls 70S-73S (corresponding to "outer cylinders") that are the same height as the entire pallet 10. The outer cylindrical wall 70S of the central girder section 70 is, for example, a rectangular cylindrical shape with a square cross section and flatly chamfered corners, while the outer cylindrical walls 71S-73S of the other girder sections 71-73 are generally rectangular cylindrical shapes with partially curved surfaces. Furthermore, the planar shapes of the outer cylindrical walls 72S, 73S of the second intermediate girder section 72 and the corner girder sections 73 are longer in the second horizontal direction H2 than in the first horizontal direction H1, and the planar shape of the outer cylindrical wall 71S of the first intermediate girder section 71 is slightly longer in the first horizontal direction H1 than in the second horizontal direction H2. The side surfaces of the vertically and horizontally aligned girder sections are arranged so that they lie on the same plane. The shape of the outer cylindrical walls 70S-73S is not limited to that described above.

[0012] As shown in Figure 2, the lower part of the pallet 10 is provided with a lower inter-girder connecting part 80 that extends from the center of the pallet 10 in the first and second horizontal directions H1, H2 to connect the lower ends of the girders, and a lower inter-girder connecting part 81 that extends along the outer edge of the pallet 10 to connect the lower ends of the girders. In addition, in the part surrounded on all sides by the lower inter-girder connecting parts 80, 81, a first fork insertion hole 91 and a second fork insertion hole 92 are open downward.

[0013] The lower inter-girder connecting portion 81, which extends along the outer edge of the pallet 10, has a lattice pattern over the entire surface. On the other hand, the lower inter-girder connecting portion 80, which extends in all directions from the center of the pallet 10, has four inter-girder ribs 82 that extend between the girders and are arranged at equal intervals, with the space between the middle two of the four inter-girder ribs 82 forming a lattice pattern. Inclined width ends of the lower inter-girder connecting portions 80, 81 are formed so that they can easily be passed over by the rollers of a hand lifter.

[0014] As shown in Figure 1, the top of the pallet 10 is provided with an upper inter-girder connecting section 60 that extends from the center of the pallet 10 in the first and second horizontal directions H1 and H2 to connect the upper ends of the girders, and an upper inter-girder connecting section 61 that extends along the outer edge of the pallet 10 to connect the upper ends of the girders. In addition, a luggage receiving section 67 is provided in the area surrounded on all four sides by the upper inter-girder connecting sections 60 and 61. The girders 70 to 73, the upper inter-girder connecting sections 60 and 61, and the top surface of the luggage receiving section 67 form a loading surface (deck board) on which goods can be placed.

[0015] The upper inter-girder connecting section 61 and the cargo receiving section 67 extending along the outer edge of the pallet 10 form a lattice structure. Moreover, the squares of the upper inter-girder connecting section 61 are generally finer than those of the cargo receiving section 67, and are therefore stronger than the cargo receiving section 67.

[0016] On the other hand, the upper inter-girder connecting section 60 extending in all directions from the center of the pallet 10 includes a plurality of (for example, four) inter-girder beams 62 that form square grooves with open bottoms and extend between the girders, and each inter-girder beam 62 is provided with a plurality of reinforcing ribs 63. In addition, a plurality of drain holes are formed in the upper wall of each inter-girder beam 62.

[0017] Next, of the girder portions 70 to 73, the first intermediate girder portion 71, the second intermediate girder portion 72, and the girder portions 70 to 73, which are arranged on the outer edge of the pallet 10, will be described in detail. First, as shown in Figures 3 and 4, the outer tube wall 71S of the first intermediate girder portion 71 has an outer tube-constituting wall 20 that constitutes the outer surface of the pallet 10, an inner tube-constituting wall 21 that faces the outer tube-constituting wall 20 in the first horizontal direction H1, and a pair of side tube-constituting walls 22 that face each other in the second horizontal direction H2. The side tube-constituting wall 22 is located outward of both ends of the outer tube-constituting wall 20 and the inner tube-constituting wall 21, and the end of the side tube-constituting wall 22 on the outer tube-constituting wall 20 side forms an arc portion 24A that curves and connects to the outer tube-constituting wall 20, and the end on the inner tube-constituting wall 21 side forms an inclined portion 24B that is inclined and connects to the outer tube-constituting wall 20 in a straight line.

[0018] A first inner wall 30 to a fourth inner wall 33 are provided as inner walls 71W inside the first intermediate girder portion 71. These first inner wall 30 to fourth inner wall 33 extend parallel to the outer cylinder wall 20 and the inner cylinder wall 21, and are arranged in order from the outer cylinder wall 20 side.

[0019] 5 and 6, the first inner wall 30 extends over the entire space between the pair of side cylinder walls 22 at the same height as the overall height of the pallet 10. Meanwhile, the second inner wall 31, the third inner wall 32, and the fourth inner wall 33 form a frame shape having upper end ribs 31A-33A and lower end ribs 31B-33B extending to the upper and lower ends of the pallet 10, and side edge ribs 31C-33C connecting the ends of the upper end ribs 31A-33A and the lower end ribs 31B-33B. In addition, the fourth inner wall 33 is also provided with a central rib 33D in the center in the second horizontal direction H1 that connects the upper end rib 33A and the lower end rib 33B.

[0020] In the second inner wall 31 and the fourth inner wall 33, the lower end ribs 31B, 33B and the side edge ribs 31C, 33C are located one plate thickness closer to the outer tube-constituting wall 20 than the upper end ribs 31A, 33A. On the other hand, in the third inner wall 32, the lower end rib 32B and the side edge rib 32C are located one plate thickness closer to the inner tube-constituting wall 21 than the upper end rib 32A.

[0021] The upper edge of the second inner wall 31 and the upper edge of the third inner wall 32, and the upper edge of the fourth inner wall 33 and the upper edge of the inner tube-constituting wall 21 are connected by an upper inter-girder connecting portion 35. The upper inter-girder connecting portion 35 is in the form of a strip extending between a pair of side tube-constituting walls 22, and forms the upper surface of the pallet 10 in cooperation with the upper inter-girder connecting portion 61 and the luggage receiving portion 67.

[0022] The lower edge of the first inner wall 30 and the lower edge of the second inner wall 31, and the lower edge of the third inner wall 32 and the lower edge of the fourth inner wall 33 are connected by a lower intra-girder connecting portion 36. The lower intra-girder connecting portion 36 is in the shape of a strip extending between a pair of side cylinder-constituting walls 22, and forms the underside of the pallet 10 in cooperation with the lower inter-girder connecting portion 81. In other words, the upper intra-girder connecting portion 35 and the lower intra-girder connecting portion 36 are arranged alternately from the first inner wall 30 side, downward, upward, downward, upward.

[0023] A plurality of drainage holes are formed in the upper intra-girder connecting portion 35 and the lower intra-girder connecting portion 36. In addition, reinforcing ribs 35A, 36A that connect the first to fourth inner walls 30-33 are formed on the lower surface of the upper intra-girder connecting portion 35 and the upper surface of the lower intra-girder connecting portion 36 in the center in the second horizontal direction H2 between a pair of connecting walls 40 (described below). The tip surfaces of these reinforcing ribs 35A, 36A are substantially flush with the lower end surfaces of the upper end ribs 31A-33A or the upper end surfaces of the lower end ribs 31B-33B.

[0024] As shown in Figures 5 and 6, the first intermediate girder 71 is formed with a pair of connecting walls 40 connecting the outer tube wall 20 and the first inner wall 30. Each connecting wall 40 is substantially parallel to the first horizontal direction H1 and the vertical direction and has a U-shape that is open toward the first inner wall 30. The connecting wall 40 has an upper horizontal portion 40A connecting the upper ends of the outer tube wall 20 and the first inner wall 30, a lower horizontal portion 40C connecting the lower ends of the outer tube wall 20 and the first inner wall 30, and an outer edge portion 40B connected to the inner surface of the outer tube wall 20 and connecting the outer ends of the upper horizontal portion 40A and the lower horizontal portion 40C. In other words, a notch 40K is formed in the connecting wall 40 on the first inner wall 30 side. In other words, the connecting walls 40 are biased toward both ends in the vertical direction and toward the outer tube wall 20.

[0025] 7, the upper horizontal portion 40A and the lower horizontal portion 40C of the connecting wall 40 are offset by one plate thickness, and the outer edge portion 40B of the connecting wall 40 is shaped so that an upper side edge portion 40B1 hanging down from the upper horizontal portion 40A and a lower side edge portion 40B2 rising up from the lower horizontal portion 40C overlap at the vertical center. In other words, the outer edge portion 40B of the connecting wall 40 has a thick portion 40B3 at the vertical center. The lower end of the upper horizontal portion 40A and the upper end of the lower side edge portion 40B2 are each tapered.

[0026] As shown in Figures 3 and 6, the outer tube-constituting wall 20 and the first inner wall 30 are connected by a pair of outer connecting walls 41 in addition to a pair of connecting walls 40. The pair of outer connecting walls 41 extend across the entire vertical direction of the pallet 10 and are arranged so as to sandwich the pair of connecting walls 40 in the second horizontal direction H2. The pair of outer connecting walls 41 are inclined so as to move away from each other from the outer tube-constituting wall 20 toward the first inner wall 30. In detail, the outer tube-constituting wall 20-side ends of the pair of connecting walls 40 and the pair of outer connecting walls 41 are arranged at positions that divide the outer tube-constituting wall 20 into approximately five equal parts. The first inner wall 30-side ends of the pair of outer connecting walls 41 are arranged at positions that divide the distance between the connecting walls 40 and the side tube-constituting wall 22 into approximately two equal parts.

[0027] 4 and 6, the side cylinder-forming walls 22 and the outer connecting wall 41 are connected to each other by a pair of lateral connecting walls 42 extending in the second horizontal direction H2. The lateral connecting walls 42 are U-shaped and open to the outer connecting wall 41 side.

[0028] 5 and 6, the first intermediate girder 71 is provided with a pair of connecting ribs 43 that extend inward from the first inner wall 30 and connect the first inner wall 30, the second inner wall 31, the third inner wall 32, the fourth inner wall 33, and the inner cylinder-constituting wall 21. Each of the pair of connecting ribs 43 extends across the entire vertical direction of the pallet 10, and extends in the first horizontal direction H1 from between the connection portion of the first inner wall 30 with the connecting wall 40 and the connection portion with the outer connecting wall 41. In other words, each connecting rib 43 is positioned at a position offset from the extension line of the connecting wall 40 and the outer connecting wall 41, and there is no connection between the first inner wall 30 and the second inner wall 31 on the extension line of the connecting wall 40 and the outer connecting wall 41.

[0029] In addition, in the lower girder internal connection section 36 between the first inner wall 30 and the second inner wall 31 mentioned above, a drain hole is arranged on the extension line of the connection wall 40 and the outer connection wall 41, and the first inner wall 30 and the second inner wall 31 are not connected on the extension line of the connection wall 40 and the outer connection wall 41 even by the lower girder internal connection section 36.

[0030] As shown in Fig. 4, a lower end wall 44 is provided on the underside of the first intermediate beam 71, serving as the bottom wall of an area surrounded by the outer tube-constituting wall 20, the first inner wall 30, the connecting wall 40, and the outer connecting wall 41. A through hole 44A extending in the first horizontal direction H1 is formed in the lower end wall 44. The through hole 44A has a first side portion 44B extending along the outer connecting wall 41, a second side portion 44C extending from the outer tube-constituting wall 20 side along the connecting wall 40, a third side portion 44D bending from the second side portion 44C and extending approximately parallel to the first side portion 44B, a fourth side portion 44E connecting the outer tube-constituting wall 20 side ends of the first side portion 44B and the second side portion 44C, and a fifth side portion 44F connecting the first inner wall 30 side ends of the first side portion 44B and the third side portion 44D.

[0031] 6 and 7, an upper end wall 45 (corresponding to a "horizontal wall") is provided on the upper surface of the first intermediate beam 71, serving as a ceiling wall of the area surrounded by the outer tube wall 20, the first inner wall 30, and the pair of connecting walls 40. Similar to the lower end wall 44, a through hole 45A extending in the first horizontal direction H1 is also formed in the upper end wall 45. The width of the through hole 45A is greatest at the center in the first horizontal direction H1 and decreases from the center toward the outer tube wall 20 and the first inner wall 30. Specifically, the through hole 45A has a pair of first sides 45B that are inclined so as to move away from each other from the end on the outer tube wall 20 side toward the center in the first horizontal direction H1, and a pair of second sides 45C that approach each other from the center toward the end on the first inner wall 30 side. The ends of the pair of first side portions 45B and the ends of the pair of second side portions 45C are connected by curved portions 45D.

[0032] Because the through hole 45A has the above-described shape, the width between the upper horizontal portion 40A of the connecting wall 40 and the opening edge of the through hole 45A is smallest at the center in the first horizontal direction H1 and increases from the center toward the outer tube-constituting wall 20 and the first inner wall 30. Furthermore, the outer side portion 40B of the connecting wall 40 is disposed closer to the outer tube-constituting wall 20 than the center of the through hole 45A in the first horizontal direction H1. In other words, the notch 40K of the connecting wall 40 is cut out to the outer tube-constituting wall 20 side beyond the center of the through hole 45A in the first horizontal direction H1.

[0033] Furthermore, a horizontal lower end wall 46 is further formed on the underside of the first intermediate girder 71, which serves as the bottom wall of the area surrounded by the outer connecting wall 41, the side cylinder constituent wall 22, and the pair of horizontal connecting walls 42 (see Figure 4), and a horizontal upper end wall 47 is further formed on the upper side of the first intermediate girder 71, which serves as the ceiling wall of the area surrounded by the outer connecting wall 41, the side cylinder constituent wall 22, the horizontal connecting wall 42, and the outer cylinder constituent wall 20 or the first inner wall 30 (see Figure 3). These horizontal lower end wall 46 and horizontal upper end wall 47 also have through holes 46A, 47A formed therein.

[0034] 8 and 9, the second intermediate girder 72 has a shape that is roughly the same as the first intermediate girder 71 but longer in the inward and outward directions of the pallet 10. Similar to the first intermediate girder 71, the outer tube wall 72S of the second intermediate girder 72 has an outer tube wall 80, an inner tube wall 81, and a pair of side tube walls 82. Inside the second intermediate girder 72, inner walls 72W are arranged in order from the outer tube wall 20 side, with first inner wall 90 to fifth inner wall 94 parallel to the outer tube wall 80 and inner tube wall 81.

[0035] The first inner wall 90 and the third inner wall 92 extend across the entire vertical direction of the pallet 10, similar to the first inner wall 30 of the first intermediate girder portion 71, and the second inner wall 91, the fourth inner wall 93 and the fifth inner wall 94 are frame-shaped, similar to the second inner wall 31 to the fourth inner wall 33 of the first intermediate girder portion 71.

[0036] In the first intermediate girder section 71, the upper girder internal connecting section 35 and the lower girder internal connecting section 36 were arranged in the order of bottom, top, bottom, top from the first inner wall 30 side, but in the second intermediate girder section 72, the upper girder internal connecting section 95 and the lower girder internal connecting section 96 are arranged alternately in the order of top, bottom, top, bottom, top from the first inner wall 90 side.

[0037] In the second intermediate girder 72, the outer tube-forming wall 80 and the first inner wall 90 are also connected by a pair of U-shaped connecting walls 85 and a pair of outer connecting walls 86 outside the connecting walls 85. Furthermore, an upper end wall 87 having the same shape as the upper end wall 45 of the first intermediate girder 71 is formed between the upper edges of the pair of connecting walls 85, and a lower end wall 88 having the same shape as the lower end wall 44 of the first intermediate girder 71 is formed between the lower edges of the connecting walls 85 and the outer connecting walls 86.

[0038] The first inner wall 90 and the inner cylinder-constituting wall 81 are connected by a pair of connecting ribs 89 that are arranged offset from the extension lines of the connecting wall 85 and the outer connecting wall 86 .

[0039] As shown in Figures 10 and 11, the outer tube wall 73S of the corner beam portion 73 has a first outer tube component wall 100 and a second outer tube component wall 101 extending from the corner portion of the pallet 10 in the first horizontal direction H1 and the second horizontal direction H2, a first inner tube component wall 102 facing the first outer tube component wall 100 in the second horizontal direction H2, and a second inner tube component wall 103 facing the second outer tube component wall 101 in the first horizontal direction H1.

[0040] The corner beam portion 73 has inner walls 73W, which include a first inner wall 110 parallel to the first outer tube wall 100 and the first inner tube wall 102, and a second inner wall 111 parallel to the second outer tube wall 101 and the second inner tube wall 103. The first inner wall 110 extends from the second inner tube wall 103 to a position midway toward the second outer tube wall 101, while the second inner wall 111 extends from the first inner tube wall 102 to a position midway toward the first outer tube wall 100, with the ends of the first inner wall 110 and the second inner wall 111 connected by a circular arc. In addition, a third inner wall 112 extends at an angle with respect to the side edge of the pallet 10 from the connection between the first inner wall 110 and the second inner wall 111 to the connection between the first outer tube wall 100 and the second outer tube wall 101.

[0041] Also in the corner girder portion 73, the second outer cylinder-forming wall 101 and the second inner wall 111 are connected by a pair of U-shaped connecting walls 120 and a pair of outer connecting walls 121 on the outside thereof. Furthermore, an upper end wall 122 having substantially the same structure as the upper end wall 45 of the first intermediate girder portion 71 is formed between the upper edges of the pair of connecting walls 120, and a lower end wall 123 having substantially the same structure as the lower end wall 44 of the first intermediate girder portion 71 is formed between the lower edges of the connecting walls 120 and the outer connecting walls 121.

[0042] The first outer cylinder-forming wall 100 and the first inner wall 110 are connected to each other by a connecting wall 120 and an outer connecting wall 121. The outer connecting wall 121 is disposed further outward than the connecting wall 120 in the first horizontal direction H1.

[0043] Further, within the area surrounded by the first inner wall 110, the second inner wall 111, the first inner cylinder constituent wall 102, and the second inner cylinder constituent wall 103, there are provided a fourth inner wall 113 and a fifth inner wall 114 that are parallel to the first inner wall 110, and sixth to eighth inner walls 115 to 117 that connect the fifth inner wall 114 and the first inner cylinder constituent wall 102. The fourth inner wall 113 has a U-shape that opens toward the second inner wall 111, and the fifth inner wall 114 extends the entire length of the pallet 10 in the vertical direction. The sixth to eighth inner walls 115 to 117 also have a U-shape that opens toward the fifth inner wall 114. The fourth inner wall 113 and the fifth inner wall 114 are arranged offset from the connecting wall 120 and the outer connecting wall 121 that connect the second outer cylinder-forming wall 101 and the second inner wall 111 .

[0044] The third inner wall 112 and the outer connecting wall 121, the first inner cylinder constituent wall 102 and the opposing outer connecting wall 121, the second inner cylinder constituent wall 103 and the opposing connecting wall 120, the fourth inner wall 113 and the fifth inner wall 114, the second inner wall 111 and the sixth inner wall 115, the seventh inner wall 116 and the eighth inner wall 117, and the eighth inner wall 117 and the second inner cylinder constituent wall 103 are each connected by connecting ribs 126. Also, similar to the first intermediate girder portion 71, upper end walls 124 and lower end walls 125 are formed alternately at the upper and lower ends of the area defined by the outer cylinder wall 73S and the inner wall 73W.

[0045] Next, we will explain the effects of the pallet 10 of this embodiment. The pallet 10 can be lifted or moved by inserting a pair of forks of a forklift into the pair of first fork insertion holes 91 or the pair of second fork insertion holes 92.

[0046] Incidentally, when the forks are inserted into the first fork insertion holes 91 or the second fork insertion holes 92, it is conceivable that the forks may accidentally collide with the beams 71-73 arranged on the outer edge of the pallet 10. Also, some workers may use the forks to push the beams 71-73 when they want to slightly shift the pallet 10. In this case, the beams 71-73 may receive an impact from the outside, which could cause the beams 71-73 to be damaged.

[0047] In contrast, according to the pallet 10 of this embodiment, the connecting walls 40, 85, 120 that connect the outer tube constituent walls 20, 80, 100, 101 that form the outer surface of the pallet 10 and the first inner walls 30, 90, 110 and second inner wall 111 inside them are U-shaped and open to the inside (i.e., notches 40K, 85K, 120K are formed on the inside), so that when the outer tube constituent walls 20, 80, 100, 101 are impacted, the outer tube constituent walls 20, 80, 100, 101 and the connecting walls 40, 85, 120 elastically deform, making it easier to absorb the impact and preventing damage to the beams 71-73.

[0048] Furthermore, the outer edge portions 40B, 85B, 120B of the connecting walls 40, 85, 120 are provided with thickened portions 40B3, 85B3, 120B3, making the outer edge portions 40B, 85B, 120B less susceptible to damage. Furthermore, when inserting forks, the height of the forks may be adjusted to the center of the height of the pallet 10 to avoid interference with the inner surfaces of the fork insertion holes 91, 92. Also, when pushing the pallet 10 with the forks, the forks may be pushed against the center of the height of the pallet 10 to prevent the forks from shifting in the vertical direction. In contrast, in this embodiment, the thickened portions 40B3, 85B3, 120B3 are arranged in the vertical center, thereby effectively strengthening the outer edge portions 40B, 85B, 120B.

[0049] Furthermore, if it is desired to make it easier for the outer tube constituent walls 20, 80, 100, 101 to elastically deform, it is possible to consider a configuration in which the connecting walls 40, 85, 120 are not provided. However, in that case, the outer tube constituent walls 20, 80, 100, 101 are more likely to be damaged. Therefore, by providing the U-shaped connecting walls 40, 85, 120, it is possible to prevent damage to the outer tube constituent walls 20, 80, 100, 101 while retaining a certain degree of elasticity of the outer tube constituent walls 20, 80, 100, 101.

[0050] Furthermore, the outer tube-constituting walls 20, 80, 100, 101 are connected to the first inner walls 30, 90, 110 and the second inner wall 111 by the outer connecting walls 41, 86, 121 in addition to the connecting walls 40, 85, 120, so the beams 71 to 73 are reinforced by the outer connecting walls 41, 86, 121. Furthermore, since these outer connecting walls 41, 86, 121 are inclined relative to the outer tube-constituting walls 20, 80, 100, 101, the outer connecting walls 41, 86, 121 and the outer tube-constituting walls 20, 80, 100, 101 are more likely to deform than if the outer connecting walls 41, 86, 121 were perpendicular to the outer tube-constituting walls 20, 80, 100, 101. For example, when the outer tube constituent wall 20 receives an impact from the outside, the outer connecting wall 41 pressed by the outer tube constituent wall 20 tends to bend so that the end on the outer tube constituent wall 20 side approaches the first inner wall 30 side.

[0051] In other words, the outer tube-constituting walls 20, 80, 100, 101 reinforce the beams 71 to 73 while not hindering the elastic deformation of the outer tube-constituting walls 20, 80, 100, 101, thereby preventing damage to the beams 71 to 73. Furthermore, in the portions where the connecting walls 40, 85, 120 and the outer connecting walls 41, 86, 121 are provided in pairs, the portions defined by the pair of outer connecting walls 41, 86, 121 are longer in the first inner walls 30, 90 and the second inner wall 111 than in the outer tube-constituting walls 20, 80, 101, and the portions of the first inner walls 30, 90 and the second inner wall 111 defined by the pair of outer connecting walls 41, 86, 121 bend gently when they elastically deform, so that the first inner walls 30, 90 and the second inner wall 111 are less likely to be damaged. By providing a pair of outer connecting walls 41, 86, 121, impacts are more easily absorbed in the area surrounded by the pair of outer connecting walls 41, 86, 121, the outer tube constituent walls 20, 80, 101, and the first inner walls 30, 90 or the second inner wall 111, making it less likely that the impact will have an impact further inside the pallet 10.

[0052] In addition, through holes 45A, 87A, 122A are formed in the upper end walls 45, 87, 122 formed between the pair of connecting walls 40, 85, 120, and these through holes 45A, 87A, 122A become narrower from the longitudinal center toward the outer tube constituent wall 20, 80, 101 side and the first inner wall 30, 90 or the second inner wall 111 side.Therefore, the pair of connecting walls 40, 85, 120 are more likely to deform so as to spread apart at the points where the width of the through holes 45A, 87A, 122A is wide, and the impact received by the outer tube constituent wall 20, 80, 101 is absorbed between the outer tube constituent wall 20, 80, 101 and the first inner wall 30, 90 or the second inner wall 111, making it less likely to be transmitted inward from the first inner wall 30, 90 or the second inner wall 111.

[0053] Furthermore, in the first intermediate girder portion 71 and the second intermediate girder portion 72, the connecting ribs 43, 89 extending inward from the first inner wall 30, 90 are positioned at a position offset from the extension line of the connecting walls 40, 85 and the outer connecting walls 41, 86, and there is no connection between the first inner wall 30, 90 and the second inner wall 31, 91 on the extension line of the connecting walls 40, 85 and the outer connecting walls 41, 86.Therefore, while reinforcing the first inner wall 30, 90, impact transmitted to the first inner wall 30, 90 via the connecting walls 40, 85 and the outer connecting walls 41, 86 is less likely to be transmitted to the second inner wall, preventing damage to the first inner wall 30, 90 and the second inner wall 31, 91.

[0054] Furthermore, in the first intermediate girder portion 71, an upper end wall 45 connecting the outer tube constituent wall 20 and the first inner wall 30 is arranged at the upper end of the pallet 10, while a reinforcing rib 36A connecting the first inner wall 30 and the second inner wall 31 is arranged at the lower end of the pallet 10, so that the impact received by the upper end wall 45 is less likely to be transmitted to the second inner wall 31.

[0055] [Other embodiments] The pair of outer communication walls 41, 86, 121 may be inclined so as to approach each other or be parallel to each other as they approach the first inner wall 30, 90 or the second inner wall 111. In addition, there may be no outer communication wall, one outer communication wall, or two or more outer communication walls.

[0056] In the above embodiment, the outer communication walls 41, 86, 121 extend entirely across the entire pallet 10 in the vertical direction, but similar to the communication walls 40, 85, 120, they may be U-shaped with a notch.

[0057] The pair of communication walls 40, 85, 120 may be inclined relative to the vertical direction, or may be inclined relative to the opposing direction of the outer cylinder constituent walls 20, 80, 101 and the first inner wall 30, 90 or the second inner wall 111.

[0058] The connecting wall 40 may have only one of the upper horizontal portion 40A and the lower horizontal portion 40C, or one of a pair of connecting walls 40 may have the upper horizontal portion 40A and the other the lower horizontal portion 40C. Furthermore, the notch 40K may be located away from the first inner wall 30 as long as it is closer to the first inner wall 30. In other words, the notch 40K may be a through hole formed closer to the first inner wall 30 than to the outer tube-constituting wall 20. The same applies to the connecting walls 85, 120.

[0059] The wider portion of through hole 45A, 87A, 122A may be closer to one of outer tube-constituting wall 20, 80, 101 and first inner wall 30, 90 or second inner wall 111. Furthermore, through hole 45A, 87A, 122A may have a pair of parallel sides extending parallel to each other between a pair of first sides 45B and a pair of second sides 45C. Furthermore, through hole 45A, 87A, 122A may have an elliptical shape.

[0060] The communication walls 40, 85, and 120 may be configured to be bent along the opening edges of the through holes 45A, 87A, and 122A.

[0061] The width of the through holes 45A, 87A, 122A may be made uniform, while the width of the upper end walls 45, 87, 122 may be made smaller in the middle in the direction in which the outer tube constituent wall 20, 80, 101 faces the first inner wall 30, 90 or the second inner wall 111, so that the width between the connecting wall 40, 85, 120 and the opening edge of the through holes 45A, 87A, 122A increases from the center toward the outer tube constituent wall 20, 80, 101 side and the first inner wall 30, 90 or the second inner wall 111 side.

[0062] The through holes 45A, 87A, 122A having the above-described characteristics may be provided on the top surface of the pallet, on the bottom surface, or on both the top and bottom surfaces.

[0063] The through holes 45A, 87A, 122A, 44A, 88A, 123A may be formed throughout the entire upper end walls 45, 87, 122 or the entire lower end walls 44, 88, 123. In other words, the through holes 45A, 87A, 122A, 44A, 88A, 123A may eliminate the upper end walls 45, 87, 122 or the lower end walls 44, 88, 123.

[0064] <Additional Notes> The following describes the features extracted from the above embodiment, while indicating, as necessary, the effects, etc. Note that, for ease of understanding, the corresponding configurations in the above embodiment are indicated in parentheses as appropriate below, but these features are not limited to the specific configurations indicated in parentheses.

[0065] [Feature 1] A pallet (10) having cylindrical beams (71-73) hanging down from a plurality of locations on the outer edge of a rectangular deck board, with fork insertion holes (91, 92) formed between adjacent beams (71-73), an outer cylinder constituent wall (20, 80, 101) of the outer cylinder (71S-73S) of the beam portion (71-73) that constitutes the outer surface of the pallet (10); a first inner wall (30, 90, 111) disposed within the beam portion (71-73) and facing the outer cylinder wall (20, 80, 101); a pair of connecting walls (40, 85, 120) that are parallel to the vertical direction and connect the outer cylinder wall (20, 80, 101) and the first inner wall (30, 90, 111); The pair of communication walls (40, 85, 120) are formed with notches (40K, 85K, 120K) on the first inner wall (30, 90, 111) side, The pair of connecting walls (40, 85, 120) each have a horizontal portion (40A) extending between the upper ends or lower ends of the outer tube constituent wall (20, 80, 101) and the first inner wall (30, 90, 111), and an outer edge portion (40B, 85B, 120B) connected to the inner surface of the outer tube constituent wall (20, 80, 101) and extending in the vertical direction. Pallet (10).

[0066] According to the pallet of Feature 1, a notch is formed on the first inner wall side of the pair of connecting walls, so that when the connecting wall and the outer tube-constituting wall are subjected to an impact, such as when a fork collides with the outer tube-constituting wall, the connecting wall and the outer tube-constituting wall are more likely to elastically deform, preventing damage to the beam.

[0067] [Feature 2] a pair of horizontal walls (45, 87, 122) extending inwardly of the horizontal portions (40A), the first inner wall (30, 90, 111), and the outer cylinder wall (20, 80, 101); a through-hole (45A, 87A, 122A) formed in the horizontal wall (45, 87, 122), A pallet (10) according to Feature 1, wherein the width of the through holes (45A, 87A, 122A) in the direction in which the pair of horizontal portions (40A) face each other decreases from an intermediate portion between the first inner wall (30, 90, 111) and the outer tube-constituting wall (20, 80, 101) toward the first inner wall (30, 90, 111) and the outer tube-constituting wall (20, 80, 101).

[0068] According to the pallet of Feature 2, the pair of connecting walls can easily deform so as to widen toward each other at the locations where the through holes are wide, and impact is absorbed between the first inner wall and the outer cylinder wall, making it difficult for the impact to be transmitted inward from the first inner wall. Note that the through holes may be formed throughout the entire horizontal wall. In other words, a configuration in which there is no horizontal wall due to the through holes is also included.

[0069] [Feature 3] a pair of horizontal walls (45, 87, 122) extending inwardly of the horizontal portions (40A), the first inner wall (30, 90, 111), and the outer cylinder wall (20, 80, 101); a through-hole (45A, 87A, 122A) formed in the horizontal wall (45, 87, 122), A pallet (10) according to feature 1 or 2, wherein the width between the horizontal portion (40A) and the outer edge of the through hole (45A, 87A, 122A) increases from an intermediate portion between the first inner wall (30, 90, 111) and the outer tube-constituting wall (20, 80, 101) toward the first inner wall (30, 90, 111) and the outer tube-constituting wall (20, 80, 101).

[0070] According to the pallet of feature 3, the pair of connecting walls are easily deformed so as to widen toward each other at the point where the width between the horizontal portion and the outer edge of the through hole is narrow, and impact is absorbed between the first inner wall and the outer tube constituent wall, making it less likely to be transmitted inward from the first inner wall.

[0071] [Feature 4] an outer communication wall (41, 86, 121) that connects the outer cylinder wall (20, 80, 101) and the first inner wall (30, 90, 111) outside the pair of communication walls (40, 85, 120); A pallet (10) according to any one of features 1 to 3, wherein the outer connecting wall (41, 86, 121) is inclined relative to the side edge of the pallet.

[0072] According to the pallet of feature 4, the outer connecting wall reinforces the beams. Furthermore, since the outer connecting wall is more easily deformed than when the outer connecting wall is perpendicular to the side edge of the pallet, damage to the beams is prevented.

[0073] [Feature 5] The outer communication walls (41, 86, 121) are provided in pairs with the pair of communication walls (40, 85, 120) interposed therebetween, A pallet (10) according to Feature 4, wherein the pair of outer connecting walls (41, 86, 121) are inclined so as to move away from each other as they approach the first inner wall (30, 90, 111).

[0074] According to the pallet of feature 5, the portion defined by the pair of outer connecting walls is longer on the first inner wall than on the outer connecting wall, and the portion of the first inner wall defined by the pair of outer connecting walls bends gently when elastically deformed, making the first inner wall less susceptible to damage.

[0075] [Feature 6] a second inner wall (31, 91) disposed in the outer cylinder (71S, 72S) and facing the first inner wall (30, 90) from the side opposite to the outer cylinder constituent wall (20, 80); A pallet (10) according to feature 4 or 5, wherein there is no connection between the first inner wall (30, 90) and the second inner wall (31, 91) on the extension lines of the connecting wall (40, 85) and the outer connecting wall (41, 86).

[0076] According to the pallet of feature 6, the transmission of impact from the first inner wall to the second inner wall is suppressed.

[0077] [Feature 7] The pallet (10) according to Feature 6 is provided with a connecting rib (43, 89) that connects the first inner wall (30, 90) and the second inner wall (31, 91) at a position offset from the extension line of the connecting wall (40, 85) and the outer connecting wall (41, 86).

[0078] According to the pallet of Feature 7, the transmission of impact is suppressed while the first inner wall is reinforced to prevent damage.

[0079] [Feature 8] A pallet (10) according to any one of features 1 to 3, wherein the outer side portions (40B, 85B, 120B) are provided with thick portions (40B3, 85B3, 120B3) in the middle portions in the vertical direction.

[0080] According to the pallet of feature 8, the outer edges are reinforced to prevent breakage.

[0081] [Feature 9] A pallet (10) according to feature 2 or 3, wherein the notch (40K, 85K, 120K) is cut out from the intermediate portion to the outer tube constituent wall (20, 80, 101) side.

[0082] According to the pallet of feature 9, the pair of communication walls are prone to bending at the location where the width of the through-hole is large or at the location where the width between the horizontal portion and the outer edge of the through-hole is small.

[0083] [Feature 10] A pallet (10) according to Feature 4, wherein the outer connecting wall (41, 86, 121) extends from the upper surface to the lower surface of the pallet over the entire length from the side end of the outer tube-constituting wall (20, 80, 101) to the side end of the first inner wall (30, 90, 111).

[0084] The outer connecting wall may have a notch formed therein, similar to the connecting wall, or may extend from the top to the bottom of the pallet, from the outer tube-constituting wall side end to the first inner wall side end, as in the pallet of feature 10.

[0085] [Feature 11] A pallet (10) according to feature 6 or 7, wherein a connecting rib (43, 89) connecting the first inner wall (30, 90) and the second inner wall (31, 91) is provided on the upper and lower ends of the pallet opposite the horizontal wall (45, 87).

[0086] According to the pallet of feature 11, the impact received by the horizontal wall connecting the outer tube constituent wall and the first inner wall is less likely to be transmitted to the second inner wall.

[0087] [Feature 12] The pallet (10) of Feature 1, wherein each of the pair of connecting walls (40, 85, 120) has a first horizontal portion (40A) extending between the upper ends of the outer tube-constituting wall (20, 80, 101) and the first inner wall (30, 90, 111) and a second horizontal portion (40A) extending between the lower ends thereof.

[0088] According to the pallet of Feature 12, the strength of the connecting wall is improved.

[0089] [Feature 13] A pallet in which cylindrical beams (71-73) hang down from multiple locations on the outer edge of a rectangular deck board, and fork insertion holes (91, 92) are formed between adjacent beams (71-73), An outer cylinder constituent wall (20, 80, 101) that constitutes the outer surface of the pallet in the outer cylinder of the beam portion (71 to 73); a first inner wall (30, 90, 111) disposed within the beam portion (71-73) and facing the outer cylinder wall (20, 80, 101); a pair of connecting walls (40, 85, 120) that are parallel to the vertical direction and connect the outer cylinder wall (20, 80, 101) and the first inner wall (30, 90, 111); The pair of connecting walls (40, 85, 120) of the pallet (10) are located at both ends in the vertical direction and biased toward the outer cylinder wall (20, 80, 101).

[0090] According to the pallet of feature 13, the impact received by the outer tube constituent wall is less likely to be transmitted to the first inner wall.

[0091] Although the present specification and drawings disclose specific examples of the technology included in the scope of the claims, the technology described in the claims is not limited to these specific examples, but also includes various modifications and variations of the specific examples, and also includes parts of the specific examples taken out alone. [Explanation of symbols]

[0092] 10 palettes 20, 80, 101 The outer cylinder forms the wall 30 1st inner wall 30,90 1st inner wall 30,90,110 1st inner wall 31,91 2nd inner wall 40, 85, 120 Connecting Wall 40A Upper horizontal section 40B Outer side 40B3 Thick part 40C Lower horizontal section 40K, 85K, 120K all due 41,86,121 Lateral ligament 45, 87, 122 Upper wall (horizontal wall) 45A, 87A, 122A Through Holes 71 First Intermediate Truss 71S~73S outer cylinder wall (outer cylinder) 72 Second Intermediate Truss 73 Sumigang Department

Claims

1. A pallet in which cylindrical beams hang down from multiple points on the outer edge of a rectangular deck board, and fork insertion holes are formed between adjacent beams, An outer cylinder constituent wall that constitutes the outer surface of the pallet of the outer cylinder of the girder portion; a first inner wall disposed within the girder portion and facing the outer cylindrical wall; a pair of connecting walls that are parallel to the vertical direction and connect the outer cylinder wall and the first inner wall, The pair of communication walls have notches formed on the first inner wall side, A pallet in which the pair of connecting walls each have a horizontal portion extending between the upper ends or lower ends of the outer tube-constituting wall and the first inner wall, and an outer edge portion connected to the inner surface of the outer tube-constituting wall and extending in the vertical direction.

2. a pair of horizontal walls extending inwardly of the horizontal portions, the first inner wall, and the outer cylinder wall; a through-hole formed in the horizontal wall, A pallet as described in claim 1, wherein the width of the through hole in the direction in which the pair of horizontal portions face each other decreases from the intermediate portion between the first inner wall and the outer tube constituent wall toward the first inner wall side and the outer tube constituent wall side.

3. a pair of horizontal walls extending inwardly of the horizontal portions, the first inner wall, and the outer cylinder wall; a through-hole formed in the horizontal wall, A pallet as described in claim 1, wherein the width between the horizontal portion and the outer edge of the through hole increases from the intermediate portion between the first inner wall and the outer tube constituent wall toward the first inner wall side and the outer tube constituent wall side.

4. an outer communication wall that connects the outer cylinder wall and the first inner wall outside the pair of communication walls; 4. A pallet according to claim 1, wherein the outer connecting wall is inclined relative to the side edge of the pallet.

5. The outer communication walls are provided in pairs with the pair of communication walls in between, 5. A pallet according to claim 4, wherein the pair of outer connecting walls are inclined away from each other toward the first inner wall.

6. a second inner wall disposed in the outer cylinder and facing the first inner wall from the opposite side to the outer cylinder wall; 5. The pallet according to claim 4, wherein the first inner wall and the second inner wall are not connected to each other on an extension line of the connecting wall and the outer connecting wall.

7. 7. The pallet according to claim 6, further comprising a connecting rib that connects the first inner wall and the second inner wall at a position offset from an extension line of the connecting wall and the outer connecting wall.

8. A pallet according to any one of claims 1 to 3, wherein the outer edge portion has a thick portion in the middle in the vertical direction.

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