Pallet

Abstract

To provide a pallet reduced in weight, while suppressing lowering of strength.SOLUTION: A corner strut part 2 of a pallet 1 has an outer peripheral wall part 11 having a corner outer wall constitution part 21 constituting an outer peripheral surface of the pallet 1 and a corner inner wall constitution part 22 facing an intermediate strut part 3, and an upper sash 13 and a lower sash 14 extended almost in parallel in a horizontal direction with a prescribed interval in relation to an upper rim and a lower rim of the corner outer wall constitution part 21 inside the outer peripheral wall part 11. The corner strut part 2 has an inside vertical connection rib 28 extended almost vertically from an intermediate part of the upper sash 13 (object upper sash 25) nearest to the corner outer wall constitution part 21, to an object lower sash 26, a horizontal connection rib 29 extended from an upper end of the inside vertical connection rib 28 roughly horizontally and connected to an upper end of the corner outer wall constitution part 21, and an outer vertical connection rib 30 extended roughly vertically along an inner face of the corner outer wall constitution part 21 with an upper end connected to the horizontal connection rib 29, and has a connection rib 27 forming a roughly U-shape as a whole.SELECTED DRAWING: Figure 3

Description

[Technical Field]

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

[0002] Generally, pallets used for transporting goods, etc., have multiple pillars, an upper deck section connecting the upper ends of the pillars, and a lower deck section connecting the lower ends of the pillars, and have fork insertion sections between the pillars into which forks from a forklift or the like can be inserted (see, for example, Patent Document 1, etc.). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2016-108036 Summary of the Invention [Problem to be solved by the invention]

[0004] Meanwhile, with regard to pallets, there is a demand for weight reduction while maintaining the strength required for pallets from the viewpoint of reducing environmental impact, logistics costs, etc. For example, in the above-mentioned Patent Document 1, multiple openings are formed in the upper deck and lower deck, and openings are formed in the outer peripheral wall of the pillar, but further measures are required.

[0005] The present invention has been made to solve the problems exemplified above, and its object is to provide a pallet that can be made lighter while suppressing a decrease in strength. [Means for solving the problem]

[0006] 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.

[0007] Means 1. A pallet having a rectangular shape in plan view, comprising a plurality of pillars and an upper deck portion connecting the upper ends of the plurality of pillars, and a fork insertion portion formed between the plurality of pillars to allow the insertion of forks of a transport means having forks, The pillar portion includes an outer peripheral wall portion that constitutes the outer peripheral surface of the pillar portion, an upper rib that extends parallel to and apart from an upper edge portion of a target wall portion of the wall portion that constitutes the outer peripheral wall portion on the inside of the outer peripheral wall portion, and a lower rib that extends parallel to and apart from an upper edge portion of the target wall portion on the inside of the outer peripheral wall portion, and One end of each of the upper and lower bars is connected to a predetermined portion of a cross wall portion of a wall portion constituting the outer peripheral wall portion, the cross wall portion extending in a direction crossing the target wall portion, and the other end is connected to a predetermined portion of an opposing wall portion of a wall portion constituting the outer peripheral wall portion that is disposed opposite the cross wall portion, or to a predetermined portion of an inner rib that extends inside the outer peripheral wall portion in a direction crossing the target wall portion, the connecting portion on the other end side of the upper rail is longer in the up-down direction than a predetermined intermediate portion in the extending direction of the upper rail, A pallet characterized in that the connecting portion on the other end side of the lower rail is longer in the vertical direction than a predetermined intermediate portion in the extension direction of the lower rail.

[0008] According to the first method, the upper and lower rails can cooperate to effectively cope with stress acting on the columns. This allows the pallet to be made lighter while preventing a decrease in the pallet's compressive strength in the vertical direction and in its impact strength when a fork hits the columns (target wall). In particular, there is no need to provide openings in the outer wall, which more reliably prevents deformation and damage to the outer wall of the columns when the pallet is subjected to a compressive load or when a fork hits the columns. Furthermore, the outer surface of the pallet can be provided with a surface for displaying information, and holes for hooking hooks or the like can be formed while ensuring the strength and rigidity of the area around the holes.

[0009] Means 2. The connecting portion on the other end side of the upper rail is inclined downward, A pallet according to Means 1, characterized in that the connecting portion on the other end side of the lower rail is inclined upward.

[0010] Means 3. The connecting portion on one end side of the upper rail is longer in the vertical direction than a predetermined intermediate portion in the extending direction of the upper rail, A pallet according to means 1 or 2, characterized in that the connecting portion on one end side of the lower rail is longer in the vertical direction than a predetermined intermediate portion in the extension direction of the lower rail.

[0011] Means 4. The other end of the upper rail and the other end of the lower rail are connected to predetermined portions of an inner rib extending in a direction intersecting the target wall portion on the inside of the outer peripheral wall portion, The upper and lower rails have an L-shaped cross section, The pallet according to any one of means 1 to 3, wherein the inner rib has a T-shaped cross section.

[0012] Means 5. A pallet described in any of means 1 to 4, characterized in that it is provided with a horizontal connecting rib that connects a predetermined intermediate portion in the extension direction of the target wall portion and an intermediate portion in the extension direction of the upper rail. Means 6. A pallet according to Means 5, wherein the horizontal connecting rib extends in a direction intersecting with an angle perpendicular to the upper rail. According to the fifth and sixth measures, deformation of the target wall portion can be more effectively suppressed. [Brief explanation of the drawings]

[0013] [Figure 1] FIG. 2 is a perspective view showing the top side of the pallet. [Figure 2] FIG. 2 is a perspective view showing the underside of the pallet. [Figure 3] FIG. 10 is a partially enlarged perspective view including a partial cross section showing a corner post portion and the like. [Figure 4] FIG. 10 is a partially enlarged perspective view including a partial cross section showing an intermediate column portion and the like. [Figure 5]FIG. 10 is a partially enlarged perspective view including a partial cross section showing the underside of the intermediate column portion, etc. DETAILED DESCRIPTION OF THE INVENTION

[0014] An embodiment of the present invention will be described below with reference to the drawings. As shown in FIGS. 1 and 2, the pallet 1 has a generally rectangular shape in a plan view. The pallet 1 also includes four corner posts 2 provided at the four corners of the pallet 1, intermediate posts 3 provided at intermediate positions between pairs of corner posts 2 aligned along each side of the pallet 1, a central post 4 provided at the center of the pallet 1, an upper deck 5 connecting the upper ends of the corner posts 2, the intermediate posts 3, and the central post 4, and a lower deck 6 connecting the lower ends of the corner posts 2, the intermediate posts 3, and the central post 4. Fork insertion sections 7 are formed between each corner post 2 and the intermediate post 3, into which forks of a forklift, hand truck, or other transportation means can be inserted. The pallet 1 of this embodiment is a four-way insertion type pallet, allowing forks to be inserted from the four side surfaces that form the outer periphery of the pallet 1. The pallet 1 is also integrally formed (integrally molded) from polypropylene. Furthermore, in this embodiment, the upper surfaces of the corner post portion 2, the intermediate post portion 3, the central post portion 4, and the upper deck portion 5 form a "loading surface 8" on which items can be placed, and the lower surfaces of the corner post portion 2, the intermediate post portion 3, the central post portion 4, and the lower deck portion 6 form a "grounding surface 9" that comes into contact with an installation surface such as the floor on which the pallet 1 is placed (see Figure 2, etc.).

[0015] In addition, the corner post portion 2, the intermediate post portion 3, and the central post portion 4 each have an outer peripheral wall portion 11 that is approximately rectangular and extends in the vertical direction and forms their outer peripheral surface, an upper rib 13 that extends horizontally and approximately parallel to the upper edge portion of the target wall portion 12, which is one of the walls that form the outer peripheral wall portion 11, on the inside of the outer peripheral wall portion 11, at a predetermined distance, and a lower rib 14 that extends horizontally and approximately parallel to the lower edge portion of the target wall portion 12 on the inside of the outer peripheral wall portion 11, at a predetermined distance.

[0016] More specifically, the outer peripheral wall 11 of the corner post 2 comprises an outer corner wall constituent portion 21 that constitutes the outer peripheral surface of the pallet 1, an inner corner wall constituent portion 22 that faces the intermediate post 3 and defines the width of the fork insertion portion 7, and a corner corner wall portion 23 that connects the ends of the inner corner wall constituent portions 22 at a boundary between the inner corner wall constituent portions 22 at an angle of approximately 135 degrees relative to the inner corner wall constituent portions 22. The outer corner wall constituent portion 21 extends approximately parallel to (or approximately perpendicular to) each side edge of the pallet 1. The portion of the inner corner wall constituent portion 22 on the entrance side of the fork insertion portion 7 is curved so that the width of the fork insertion portion 7 gradually widens from the back side of the fork insertion portion 7 toward the entrance side. On the inside of the corner post portion 2, a substantially flat corner inner rib 24 is provided, which is connected to the corner portion where the corner outer wall constituent portions 21 are connected to each other, extends at an angle of approximately 45 degrees to the corner outer wall constituent portion 21, and continues from the upper end to the lower end of the corner post portion 2.

[0017] In the corner post portion 2 of this embodiment, each outer corner wall constituent portion 21 is configured as a target wall portion 12. One end of each of the upper crossbeams 13 and lower crossbeams 14 of the corner post portion 2 is connected to the boundary between the corner wall portion 23 and each of the inner corner wall constituent portions 22 serving as cross walls, or to a predetermined intermediate portion in the width direction of the inner corner wall constituent portion 22, and both extend approximately perpendicular to the connected inner corner wall constituent portion 22. Furthermore, the upper crossbeams 13 connected to the boundary between the inner corner wall constituent portion 22 and the corner wall portion 23 are connected to each other, and the lower crossbeams 14 connected to the boundary between the inner corner wall constituent portion 22 and the corner wall portion 23 are connected to each other, and the edge of the inner corner rib 24 on the center side of the pallet 1 is connected to the connection portions between the upper crossbeams 13 and the lower crossbeams 14. In addition, with regard to the upper slat 13 and the lower slat 14, one end of which is connected to the middle position in the width direction of the corner inner wall component 22, the other end is connected to a predetermined position in the middle in the width direction (extension direction) of the corner inner rib 24.

[0018] Furthermore, as shown in Figure 3, each corner post portion 2 is provided with an inner vertical connecting rib 28 that extends in an approximately vertical direction from a predetermined intermediate position in the extension direction of the upper crosspiece 13 (hereinafter also referred to as the "target upper crosspiece 25") that is closest to each corner outer wall component 21 to a predetermined intermediate position in the extension direction of the lower crosspiece 14 (hereinafter also referred to as the "target lower crosspiece 26"), an horizontal connecting rib 29 that extends from the upper end of the inner vertical connecting rib 28 in an approximately horizontal direction that is approximately perpendicular to the target upper crosspiece 25 toward the corresponding corner outer wall component 21 and is connected to the upper end of the corner outer wall component 21 (a predetermined intermediate position in the extension direction of the upper edge of the corner outer wall component 21), and an outer vertical connecting rib 30 that extends in an approximately vertical direction along the inner surface of the corner outer wall component 21 and has its upper end connected to the horizontal connecting rib 29, and is provided with a connecting rib 27 that is approximately (inverted) U-shaped and opens downward as a whole. The inside of the connecting rib 27 (particularly the inside including the lower part) penetrates in the width direction of the corner outer wall component 21 (target wall portion 12) corresponding to the connecting rib 27, so as to connect the corner inner wall component 22 to which the target upper crosspiece 25 and the target lower crosspiece 26 are connected and the corner inner rib 24.

[0019] 1, 2, etc., the outer peripheral wall 11 of the intermediate pillar 3 includes an intermediate outer wall component 31 that forms the outer peripheral surface of the pallet 1, an intermediate inner wall first component 32 that faces the corner pillar 2 and determines the width of the fork insertion section 7, an intermediate inner wall second component 33 that faces the central pillar 4 and determines the width of the fork insertion section 7, and an intermediate corner wall 34 that connects the ends of the intermediate inner wall first component 32 and the intermediate inner wall second component 33 at a boundary between each intermediate inner wall first component 32 and intermediate inner wall second component 33 at an angle of approximately 135 degrees with respect to the intermediate inner wall first component 32. The intermediate outer wall component 31 and the intermediate inner wall second component 33 extend approximately parallel to (or approximately perpendicular to) each side edge of the pallet 1. The portion of the intermediate inner wall first constituent portion 32 on the entrance side of the fork insertion portion 7 is curved so that the width of the fork insertion portion 7 gradually increases from the back side of the fork insertion portion 7 toward the entrance side.

[0020] In the intermediate column 3 of this embodiment, the intermediate outer wall component 31 and the intermediate inner wall second component 33 are configured as the target wall portion 12. Furthermore, the upper crosspiece 13 and the lower crosspiece 14 of each intermediate column 3 are provided in pairs spaced apart from each other in the inner and outer circumferential direction of the pallet 1, with one end connected to one of the intermediate inner wall first component parts 32 as the cross wall portion and the other end connected to the other intermediate inner wall first component part 32 as the opposing wall portion. The upper crosspiece 13 and the lower crosspiece 14 are connected to predetermined intermediate positions in the width direction of the intermediate inner wall first component part 32, and both extend approximately perpendicular to the connected intermediate inner wall first component part 32. A substantially flat intermediate inner rib 35 is provided continuously from the upper end to the lower end of the intermediate column 3 so as to connect the central portions of the pair of upper crosspieces 13 and the pair of lower crosspieces 14 of the intermediate column 3 in the extension direction.

[0021] As shown in Figures 4 and 5, each intermediate column section 3 is provided with an inner vertical connecting rib 28 extending in an approximately vertical direction from a predetermined intermediate position in the extension direction of the upper crosspiece 13 (hereinafter also referred to as the "target first upper crosspiece 36") that is closest to the intermediate exterior wall component 31 to a predetermined intermediate position in the extension direction of the lower crosspiece 14 (hereinafter also referred to as the "target first lower crosspiece 37"), a horizontal connecting rib 29 extending in an approximately horizontal direction from the upper end of the inner vertical connecting rib 28 toward the intermediate exterior wall component 31, approximately perpendicular to the target first upper crosspiece 36, and connected to the upper end of the intermediate exterior wall component 31 (a predetermined intermediate position in the extension direction of the upper edge of the intermediate exterior wall component 31), and an outer vertical connecting rib 30 extending in an approximately vertical direction along the inner surface of the intermediate exterior wall component 31, the upper end of which is connected to the horizontal connecting rib 29, and the first connecting rib 38 is generally (inverted) U-shaped and opens downwards. In this embodiment, the first connecting rib 38 is provided corresponding to the center of the extension direction of the target first upper bar 36, and the inner vertical connecting rib 28 of the first connecting rib 38 is connected to the intermediate inner rib 35.

[0022] In addition, each intermediate column portion 3 is provided with an inner vertical connecting rib 28 extending in an approximately vertical direction from a predetermined intermediate position in the extension direction of the upper crosspiece 13 (hereinafter also referred to as the ``target second upper crosspiece 39'') that is closest to the intermediate inner wall second component portion 33 to a predetermined intermediate position in the extension direction of the lower crosspiece 14 (hereinafter also referred to as the ``target second lower crosspiece 40''), a horizontal connecting rib 29 extending in an approximately horizontal direction from the upper end of the inner vertical connecting rib 28 toward the intermediate inner wall second component portion 33, approximately perpendicular to the target second upper crosspiece 39, and connected to the upper end of the intermediate inner wall second component portion 33 (a predetermined intermediate position in the extension direction of the upper edge portion of the intermediate inner wall second component portion 33), and an outer vertical connecting rib 30 extending in an approximately vertical direction along the inner surface of the intermediate inner wall second component portion 33, and whose upper end is connected to the horizontal connecting rib 29, and is provided with a second connecting rib 41 that, as a whole, has an approximately (inverted) U-shape that opens downward. In this embodiment, the second connecting ribs 41 are arranged in pairs spaced apart from each other in the width direction of the intermediate inner wall second component 33, and are arranged adjacent to one area between the intermediate inner rib 35 and one of the intermediate inner wall first component parts 32, and one area between the intermediate inner rib 35 and the other intermediate inner wall first component part 32 (see Figure 5, etc.).

[0023] As shown in Figures 1 and 2, the outer peripheral wall 11 of the central pillar 4 faces the intermediate pillar 3 and includes a central inner wall component 51 that defines the width of the fork insertion section 7, and central corner wall components 52 that connect the ends of the central inner wall components 51 at the boundary between the central inner wall components 51 at an angle of approximately 135 degrees relative to the central inner wall components 51. The central inner wall components 51 extend approximately parallel to (or approximately perpendicular to) each side edge of the pallet 1. A central inner rib 53 that has an octagonal cylindrical shape overall and continues from the upper end to the lower end of the central pillar 4 is provided on the inside of the central pillar 4, and the central inner rib 53 and the central inner wall component 51 are appropriately connected by upper crosspieces 13, lower crosspieces 14, etc.

[0024] In addition, the upper crosspieces 13 and lower crosspieces 14 of each column section 2, 3, 4 have a substantially L-shaped cross section oriented to widen the support surface 8 and the ground contact surface 9, respectively. The horizontal connecting ribs 29 of the corner column section 2 and intermediate column section 3 have a substantially T-shaped cross section oriented to widen the support surface 8 (see Figures 3 and 4). Furthermore, the inner vertical connecting ribs 28 and outer vertical connecting ribs 30 of the connecting ribs 27, first connecting ribs 38, and second connecting ribs 41 have a substantially rectangular cross section (widening in the inner and outer periphery directions of the connecting ribs 27, first connecting ribs 38, and second connecting ribs 41) (the outer vertical connecting rib 30 has a substantially T-shaped cross section when including the connected corner outer wall component 21, intermediate outer wall component 31, and intermediate inner wall second component 33). As shown in Figures 1 and 2, portions of the upper and lower edges of the outer peripheral wall portions 11 of the corner post portion 2, intermediate post portion 3, and central post portion 4 are also made to have an approximately L-shaped cross section, and furthermore, ribs extending up and down along the inner surface of the outer peripheral wall portion 11 are appropriately provided to correspond to these portions, thereby providing reinforcement.

[0025] As shown in FIGS. 3 to 5 , with respect to the connecting ribs 27, first connecting ribs 38, and second connecting ribs 41 of the corner post portions 2 and the intermediate post portions 3, the width of the outer vertical connecting ribs 30 (the width of the connecting ribs 27, first connecting ribs 38, and second connecting ribs 41 in the inner and outer peripheral directions) is configured to be larger than the width of the inner vertical connecting ribs 28. Furthermore, the width of the horizontal connecting ribs 29 is configured to be larger than the width of the inner vertical connecting ribs 28 and smaller than the width of the outer vertical connecting ribs 30. In addition, the thickness of the inner vertical connecting ribs 28 and the outer vertical connecting ribs 30 is configured to gradually decrease from the top to the bottom. The lower corners of the inner vertical connecting ribs 28 and the outer vertical connecting ribs 30 and the boundaries between the inner vertical connecting ribs 28 and the outer vertical connecting ribs 30 and the horizontal connecting ribs 29 are rounded.

[0026] Furthermore, with regard to the outer peripheral surface of the pallet 1, the upper and lower edges protrude slightly outward around the entire circumference of the pallet 1, which prevents damage to the information display means attached (or directly written) to the intermediate column 3, the corner outer wall constituent part 21 of the corner column 2, and the intermediate outer wall constituent part 31. Also, one corner outer wall constituent part 21 of the corner column 2 is provided with a hole 61 that allows a hook or the like to be hung thereon, and the peripheral part of the hole 61 is slightly thicker in thickness.

[0027] As described above in detail, according to this embodiment, by providing the connecting ribs 27 on the corner post portions 2 and the first connecting ribs 38 and second connecting ribs 41 on the intermediate post portions 3, not only are the connecting ribs 27, first connecting ribs 38, and second connecting ribs 41 themselves intended to improve the strength of the corner post portions 2 and intermediate post portions 3, but the connecting ribs 27, first connecting ribs 38, and second connecting ribs 41 also enable the outer peripheral wall portions 11, upper crosspieces 13, and lower crosspieces 14 to cooperate favorably with each other to respond to stress acting on the corner post portions 2 and intermediate post portions 3. Therefore, while preventing a decrease in the compressive strength of the pallet 1 in the vertical direction and in impact strength when a fork hits the corner post portions 2 and intermediate post portions 3 (target wall portions 12), the weight of the pallet 1 can be reduced compared to when the connecting ribs 27, first connecting ribs 38, and second connecting ribs 41 are all simply plate-shaped. In particular, there is no need to provide openings in the outer peripheral wall portion 11 (for example, by making the corner outer wall constituent portions 21 and the intermediate outer wall constituent portions 31 frame-shaped), and this more reliably prevents deformation and damage to the outer peripheral wall portions 11 of the corner posts 2 and the intermediate posts 3 when the pallet 1 is subjected to a compressive load or when a fork hits the corner posts 2 and the intermediate posts 3. Furthermore, it is possible to ensure a surface on the outer peripheral surface of the pallet 1 for displaying information, and to form holes 61 for hanging hooks or the like while ensuring strength and rigidity in the areas around the holes 61. In addition, the inner vertical connecting rib 28 is connected to the upper rails 13 and the lower rails 14 at intermediate positions in the extension direction, and the connecting rib 27 can more effectively prevent deformation and damage to the upper rails 13 and the lower rails 14. Therefore, the upper beams 13, lower beams 14, inner vertical connecting ribs 28, and horizontal connecting ribs 29, etc. are efficiently arranged to reinforce each other, thereby more significantly achieving the effect of reducing weight while ensuring the strength of the corner column sections 2 and intermediate column sections 3.

[0028] Furthermore, since the horizontal connecting rib 29 is connected to a predetermined intermediate portion in the extension direction of the upper edge portion of the target wall portion 12 (the corner outer wall component 21 corresponding to the connecting rib 27, the intermediate outer wall component 31 corresponding to the first connecting rib 38, and the intermediate inner wall second component 33 corresponding to the second connecting rib 41), deformation of the target wall portion 12 can be more effectively suppressed by the connecting rib 27, the first connecting rib 38, and the second connecting rib 41. Furthermore, the horizontal connecting rib 29 extends in a direction approximately perpendicular to the upper crosspieces 13 (the target upper crosspiece 25, the target first upper crosspiece 36, and the target second upper crosspiece 39), connecting the target wall portion 12 and the upper crosspiece 13 over the shortest distance. Therefore, the weight of the connecting rib 27, the first connecting rib 38, and the second connecting rib 41 themselves can be reduced.

[0029] Furthermore, the horizontal connecting rib 29 is connected to the upper end of the inner vertical connecting rib 28, and the connecting rib 27, the first connecting rib 38, and the second connecting rib 41 form a generally (inverted) U-shape that opens downward. As a result, on the loading surface 8 of the pallet 1 on which articles are placed, relatively large openings are formed corresponding to the connecting rib 27, the first connecting rib 38, and the second connecting rib 41, which makes it possible to prevent an article from being partially submerged in the opening.

[0030] Furthermore, the width of the outer vertical connecting ribs 30 of the connecting rib 27, the first connecting rib 38, and the second connecting rib 41 is configured to be larger than the width of the inner vertical connecting rib 28. This makes it possible to further reinforce the outer peripheral wall 11 while suppressing an increase in the weight of the pallet 1, and more reliably prevents the outer peripheral wall 11 from being damaged by contact with the forks.

[0031] 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.

[0032] (a) In the above embodiment, connecting ribs 27 are provided on all corner post sections 2, and first connecting ribs 38 and second connecting ribs 41 are provided on all intermediate post sections 3. However, it is sufficient that connecting ribs 27, first connecting ribs 38, and second connecting ribs 41 are provided on at least one of the corner post sections 2, intermediate post sections 3, and central post section 4. For example, connecting ribs may be provided on the central post section 4. Furthermore, with regard to the connecting ribs 27, first connecting ribs 38, and second connecting ribs 41, a horizontal connecting rib 29 may be provided to connect the lower end of the inner vertical connecting rib 28 to the lower end of the outer vertical connecting rib 30, so that the connecting ribs 27, first connecting ribs 38, and second connecting ribs 41 are formed into a substantially U-shape that opens upward. Furthermore, although the horizontal connecting rib 29 extends in a direction substantially perpendicular to the upper crosspiece 13 (and lower crosspiece 14), it may also be configured to extend in a direction that intersects the upper crosspiece 13 (and lower crosspiece 14) at a different angle. Additionally, the arrangement and number of the upper crosspiece 13, lower crosspiece 14, inner ribs 24, 35, 53, connecting rib 27, first connecting rib 38, and second connecting rib 41 are not particularly limited and can be changed as appropriate. For example, it is possible to provide a generally (inverted) U-shaped connecting rib 27 that opens downward and a U-shaped connecting rib that opens upward side by side.

[0033] (b) In the above embodiment, the width of the outer vertical connecting rib 30 is larger than the width of the inner vertical connecting rib 28 in the connecting rib 27, the first connecting rib 38, and the second connecting rib 41, but this is not particularly limited to this configuration and, for example, they may be the same width. Furthermore, the thickness of the outer vertical connecting rib 30 may be larger than the thickness of the inner vertical connecting rib 28, thereby more intensively reinforcing the outer peripheral wall portion 11 side. The width of the horizontal connecting rib 29 can also be changed as appropriate and, for example, it can be the same as the width of the inner vertical connecting rib 28 or the width of the outer vertical connecting rib 30.

[0034] (c) In the above embodiment, the pallet 1 is formed as a single unit (integrally molded), but it is also possible to form the upper component comprising the upper portions of the corner post portions 2, intermediate post portions 3, and central post portions 4 and the upper deck portion 5, and the lower component comprising the lower portions of the corner post portions 2, intermediate post portions 3, and central post portions 4 and the lower deck portion 6 as a single unit from polypropylene, and then weld (for example, by heat welding or vibration welding) the lower edge of the upper component portion to the upper edge of the lower component portion, thereby applying the present invention to a pallet in which the upper component portion and the lower component portion are integrated.

[0035] Furthermore, although the pallet 1 is made of polypropylene in the above embodiment, it may be made of other resin materials such as polyethylene, PET, polyamide, etc. Furthermore, although the above embodiment is a four-way insertion type pallet that allows forks to be inserted from the four sides that make up the outer surface of the pallet 1, it is also possible to adapt it to a two-way insertion type pallet that allows forks to be inserted from two sides. In addition, for example, it is also possible to embody a pallet in which the lower deck portion 6 is omitted. [Explanation of symbols]

[0036] 1...pallet, 2...corner column section, 3...intermediate column section, 4...central column section, 5...upper deck section, 6...lower deck section, 7...fork insertion section, 11...peripheral wall section, 12...target wall section, 13...upper crosspiece, 14...lower crosspiece, 21...corner outer wall component section, 22...corner inner wall component section, 24...corner inner rib, 25...target upper crosspiece, 26...target lower crosspiece, 27...connecting rib, 28...inner vertical connecting rib, 29...horizontal rib, 30...outer vertical connecting rib.

Claims

1. A pallet having a rectangular shape in plan view, comprising a plurality of pillars and an upper deck portion connecting the upper ends of the plurality of pillars, and a fork insertion portion formed between the plurality of pillars into which forks of a transport means having forks can be inserted, The pillar portion includes an outer peripheral wall portion that constitutes the outer peripheral surface of the pillar portion, an upper rib that extends parallel to and apart from an upper edge portion of a target wall portion of the wall portion that constitutes the outer peripheral wall portion on the inside of the outer peripheral wall portion, and a lower rib that extends parallel to and apart from an upper edge portion of the target wall portion on the inside of the outer peripheral wall portion, and One end of each of the upper and lower bars is connected to a predetermined portion of a cross wall portion of a wall portion constituting the outer peripheral wall portion, the cross wall portion extending in a direction crossing the target wall portion, and the other end is connected to a predetermined portion of an opposing wall portion of a wall portion constituting the outer peripheral wall portion that is disposed opposite the cross wall portion, or to a predetermined portion of an inner rib that extends inside the outer peripheral wall portion in a direction crossing the target wall portion, the connecting portion on the other end side of the upper rail is longer in the up-down direction than a predetermined intermediate portion in the extending direction of the upper rail, A pallet characterized in that the connecting portion on the other end side of the lower rail is longer in the vertical direction than a predetermined intermediate portion in the extension direction of the lower rail.

2. The connecting portion on the other end side of the upper rail is inclined downward, 2. A pallet according to claim 1, wherein the connecting portion on the other end side of the lower rail is inclined upward.

3. a connecting portion at one end of the upper rail is longer in the up-down direction than a predetermined intermediate portion in the extending direction of the upper rail; 3. A pallet according to claim 1 or 2, wherein a connecting portion at one end of the lower rail is longer in the vertical direction than a predetermined intermediate portion in the extending direction of the lower rail.

4. the other end of the upper rail and the other end of the lower rail are connected to predetermined portions of an inner rib extending in a direction intersecting the target wall portion on the inside of the outer peripheral wall portion, The upper and lower rails have an L-shaped cross section, 4. A pallet according to claim 1, wherein the inner rib has a T-shaped cross section.

5. A pallet as described in any one of claims 1 to 4, characterized in that it is provided with a horizontal connecting rib that connects a predetermined intermediate portion in the extension direction of the target wall portion and an intermediate portion in the extension direction of the upper rail.

6. 6. The pallet according to claim 5, wherein the horizontal connecting rib extends in a direction intersecting the upper rail at an angle perpendicular to the upper rail.

Images