Aluminum ramp

Abstract

To provide an aluminum ramp that is lightweight, durable and highly portable. [Solution] The aluminum slope 10 includes an aluminum block body 11, a pair of end members 12a, 12b, and an aluminum plate material 13. The block body 11 is a hollow, rectangular member. The pair of end members 12a, 12b are each triangular prism-shaped members. With end faces 12b1 of the end members 12a, 12b respectively overlapping the pair of first side portions 11c, 11d of the block body 11, the plate material 13 is adhered to the top surface 11a of the block body 11 and the tapered surfaces 12a3, 12b3 of the pair of end members 12a, 12b, thereby covering the top surface of the block body 11 and the tapered surfaces 12a3, 12b3 of the pair of end members 12a, 12b.

Description

[Technical Field]

[0001] This invention relates to an aluminum ramp. [Background technology]

[0002] Japanese Patent Application Laid-Open Publication No. 2014-144662 discloses a slope for a vehicle slope device in which a reinforcing plate is attached to a resin honeycomb member. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2014-144662 Summary of the Invention [Problem to be solved by the invention]

[0004] However, it is expected that the use of a honeycomb structure will increase manufacturing costs. The inventors of the present invention would like to provide a lightweight aluminum ramp that is durable and portable using a completely different structure. [Means for solving the problem]

[0005] The aluminum slope disclosed here comprises an aluminum block body, a pair of end members, and an aluminum plate. The block body is a hollow, rectangular member having rectangular upper and lower surfaces, a pair of first side portions that are connected to and extend along the long sides of the upper and lower surfaces, and a pair of second side portions that are connected to the short sides of the upper and lower surfaces. The pair of end members are triangular prism-shaped members, each having an end face that faces the first side of the block body, a contact surface that is flush with the bottom surface of the block body, and a tapered surface that is connected to the top surface of the block body and slopes downward. With the end faces of the end members respectively overlapping the pair of first side portions of the block body, the plate material is adhered to the top face of the block body and the tapered faces of the pair of end members, covering the top face of the block body and the tapered faces of the pair of end members.

[0006] Such an aluminum ramp can provide an aluminum ramp that is highly durable and portable. [Brief explanation of the drawings]

[0007] [Figure 1] FIG. 1 is a plan view of the aluminum slope 10. [Figure 2] FIG. 2 is a cross-sectional view of the aluminum slope 10 taken along line II-II. [Figure 3] FIG. 3 is a front view showing an aluminum slope 10A according to another embodiment. [Figure 4] FIG. 4 is a cross-sectional view of the aluminum slope 10A taken along the line IV-IV. [Figure 5] FIG. 5 is a plan view of the wide aluminum ramp 1. DETAILED DESCRIPTION OF THE INVENTION

[0008] An embodiment of the aluminum ramp disclosed herein will be described below with reference to the drawings. Note that the present invention is not limited to the following embodiment. Each drawing is a schematic representation and does not necessarily reflect the actual product. Furthermore, each drawing shows only an example and does not limit the present invention unless otherwise specified. Furthermore, members and parts that perform the same function are appropriately designated by the same reference numerals, and duplicate explanations will be omitted. The directions of up, down, left, right, front, and rear are represented by arrows U, D, L, R, F, and Rr, respectively, in the drawings. Note that the directions of up, down, left, right, front, and rear are set here for convenience.

[0009] Aluminum Ramp 10 FIG. 1 is a plan view of an aluminum slope 10. FIG. 2 is a cross-sectional view of the aluminum slope 10 taken along line II-II. As shown in FIG. 1, the aluminum slope 10 comprises an aluminum block body 11, a pair of end members 12a and 12b, an aluminum plate member 13, and a urethane resin layer 14. In the form shown in FIG. 1, the aluminum slope 10 is made of a rectangular plate member that is long from side to side and whose front-to-back width is shorter than its width in the left-to-right direction. The central portion 10a of the aluminum slope 10 is flat. Inclined surfaces 10b and 10c are formed on the front and rear edges of the central portion 10a of the aluminum slope 10, respectively. FIG. 1 shows a state in which the plate member 13 and the urethane resin layer 14 are partially broken away, partially exposing the block body 11 and the pair of end members 12a and 12b below the plate member 13.

[0010] Block 11 The aluminum block body 11 is a hollow, rectangular, plate-like member. As shown in FIGS. 1 and 2, the block body 11 has rectangular upper and lower surfaces 11a and 11b, a pair of first side portions 11c and 11d, and a pair of second side portions 11e and 11f. The pair of first side portions 11c and 11d are connected to the long sides 11a1 and 11b1 of the upper surface 11a and the lower surface 11b, respectively. The pair of second side portions 11e and 11f are connected to the short sides 11a2 of the upper surface 11a and the lower surface 11b (the short sides of the lower surface 11b are not shown).

[0011] <Rib 31> 2, a plurality of ribs 31 extending in the longitudinal direction are provided inside the block body 11 between the upper surface 11a and the lower surface 11b of the block body 11. These ribs 31 ensure that the upper surface 11a and the lower surface 11b of the block body 11 have the required strength.

[0012] <Pair of end members 12a, 12b> As shown in FIG. 2, the pair of end members 12a, 12b are each triangular prism-shaped members. The pair of end members 12a, 12b have end faces 12a1, 12b1, ground contact faces 12a2, 12b2, and tapered faces 12a3, 12b3. The end faces 12a1, 12b1 are surfaces that face and overlap the first side portions 11c, 11d of the block body 11, respectively. The ground contact faces 12a2, 12b2 are surfaces that are flush with the bottom surface 11b of the block body 11. The tapered faces 12a3, 12b3 are surfaces that are continuous with the top surface 11a of the block body 11 and slope downward. The pair of end members 12a, 12b may be made of aluminum, rubber, or a resin with the required strength.

[0013] 4, connecting portions 41 are provided between the first side portions 11c, 11d of the block body 11 and the end faces 12a1, 12b1 of the pair of end members 12a, 12b. The structure of the connecting portions 41 is not limited unless otherwise specified. In this embodiment, the connecting portions 41 are configured so that the first side portions 11c, 11d of the block body 11 and the end faces 12a1, 12b1 of the pair of end members 12a, 12b engage with each other vertically.

[0014] <Plate material 13> 1 and 2, when the end faces 12a1, 12b1 of the pair of end members 12a, 12b are respectively placed on the pair of first side portions of the block body 11, the plate material 13 is bonded to the top face 11a of the block body 11 and the tapered faces 12a3, 12b3 of the pair of end members 12a, 12b, thereby covering the top face 11a of the block body 11 and the tapered faces 12a3, 12b3 of the pair of end members 12a, 12b. For example, an aluminum plate having a thickness of 2 mm or more may be used as the plate material 13.

[0015] <Urethane resin layer 14> The urethane resin layer 14 is preferably provided on the upper surface of the aluminum ramp 10, at least on the upper surface of the plate material 13. In this embodiment, the urethane resin layer 14 is formed by forming a layer of urethane resin on the upper surface of the aluminum ramp 10, and if necessary, on the lower surface. This urethane resin protects the aluminum base from wear and generates appropriate friction on the aluminum ramp 10 to prevent the worker pushing the cart from slipping. Note that the urethane resin layer 14 is not necessarily required, and may be substituted by applying an appropriate surface treatment to the surface of the aluminum ramp 10.

[0016] <Gripping part 15> A grip portion 15 is provided on each of the pair of second side portions 11e, 11f of the block body 11. Note that the grip portion 15 may be provided on at least one of the pair of second side portions 11e, 11f of the block body 11.

[0017] This aluminum ramp 10 is made up of a wide aluminum block body 11 and a pair of end members 12a, 12b, and the top surface is covered with an aluminum plate 13. This makes it possible to provide a lightweight ramp with the required rigidity and good handling. Because the aluminum plate is positioned and integrated on the top surface, there are no steps on the running surface, allowing loaner vehicles to run smoothly.

[0018] Furthermore, by providing multiple ribs 31 extending in the long-side direction between the top surface 11a and bottom surface 11b of the block body 11 inside the block body 11, the rigidity of the block body 11 can be improved and warping of the aluminum slope 10 can be suppressed. The block body 11 is configured so that the internal ribs 31 extend in the long-side direction, and can be formed by aluminum extrusion molding. The end of the long-side direction of the block body 11 has openings, which are preferably filled with resin or the like to close the openings. The thickness, number, and arrangement of the ribs 31 inside the block body 11, as well as the thicknesses of the top surface 11a and bottom surface 11b, can be set to an appropriate thickness and arrangement to ensure the required strength.

[0019] A plate material 13 made of, for example, an aluminum plate having a thickness of 2 mm or more is layered and joined to the block body 11, and a urethane resin layer 14 is formed on it. In tests conducted by the inventor, it was confirmed that the required durability and abrasion resistance could be ensured even after 300,000 runs in a repeated test simulating the running of a cart of a required weight.

[0020] Fig. 3 is a front view showing an aluminum slope 10A according to another embodiment, and Fig. 4 is a cross-sectional view of the aluminum slope 10A taken along line IV-IV.

[0021] In the embodiment shown in FIG. 3 , the block body 11 is formed by connecting multiple block pieces 30, each made of a hollow, rectangular plate-like member. In this embodiment, the block body 11 is divided into three block pieces 30 along the short side direction and connected together. Each hollow block piece 30 has a rib 32 formed inside. The rib 32 extends along the long side direction and is connected to the top surface 30a and bottom surface 30b of the block piece 30. Each of the three block pieces 30 is a horizontally elongated hollow block piece having the same width. The block pieces 30 may be provided with connecting portions 42 on their side surfaces along the long sides for connecting them to each other. Furthermore, the connecting portions 42 may have a common structure with the connecting portion 41 that connects the pair of end members 12a, 12b. In this case, each block piece 30 may be made of a common member, allowing for shared manufacturing equipment. In this wide aluminum slope 1, a grip portion 25 is provided on the second side of the block body 11 at at least one end of the multiple aluminum slopes 10 that are not connected by the hinges 20.

[0022] FIG. 5 is a plan view of a wide aluminum slope 1. The wide aluminum slope 1 shown in FIG. 5 is made up of two aluminum slopes 10 connected by a hinge 20. The two aluminum slopes 10 are connected via the hinge 20 so that they can be folded and unfolded. FIG. 5 shows the two aluminum slopes 10 unfolded. The aluminum slope 10 may have a structure in which a block body 11 and a pair of end members 12a, 12b are combined together, as shown in FIG. 1 above, and are covered with an aluminum plate material 13. Alternatively, the aluminum slope 10 may have a structure in which the block body 11 is made up of a plurality of block pieces 30, as shown in FIG. 3.

[0023] The aluminum ramp 10 is used, for example, as a bridge plate to span a step or gap formed between the truck bed and a loading / unloading platform installed in a logistics warehouse. In this case, a length of approximately 2000 mm may be required. In this case, the wide aluminum ramp 1 is preferably used. As a bridge plate to span a step or gap formed between the truck bed and a loading / unloading platform installed in a logistics warehouse, it is frequently attached and detached between the truck bed and the loading / unloading platform installed in the logistics warehouse. In the form shown in FIG. 5, the wide aluminum ramp 1 can be folded using hinges 20, making it lightweight and durable due to its aluminum construction. Furthermore, its foldability makes it easy for users to carry and set up when needed.

[0024] Although various explanations have been given above regarding the aluminum slope disclosed herein, the aluminum slope disclosed herein is not limited to the above-mentioned embodiments and modifications unless otherwise specified. Furthermore, the respective configurations of the various embodiments and modifications mentioned above can be combined as appropriate as long as they do not interfere with each other.

[0025] As described above, this specification includes the following items.

[0026] Section 1: An aluminum block and A pair of end members; Aluminum plate and and The block body is a hollow rectangular member, the rectangular upper and lower surfaces; a pair of first side portions connected to and extending along the long sides of the upper surface and the lower surface; a pair of second side portions connected to the respective short sides of the upper surface and the lower surface; and The pair of end members are each triangular prism-shaped members, an end surface that faces and overlaps the first side portion of the block body; a ground surface that is flush with the lower surface of the block body; a tapered surface that is connected to the upper surface of the block body and slopes downward; and The plate material is The end surfaces of the end members are respectively overlapped on the pair of first side portions of the block body and connected together, and are bonded to the upper surface of the block body and the tapered surfaces of the pair of end members, thereby covering the upper surface of the block body and the tapered surfaces of the pair of end members. Aluminum ramp.

[0027] Section 2: Item 1. An aluminum slope according to item 1, wherein a urethane resin layer is provided on at least the upper surface of the plate material.

[0028] Section 3: Item 3. The aluminum slope according to item 1 or 2, wherein a plurality of ribs extending in the long side direction are provided inside the block body between the upper surface and the lower surface.

[0029] Section 4: Item 4. The aluminum slope according to any one of items 1 to 3, wherein the block body is formed by connecting a plurality of block pieces made of hollow rectangular members.

[0030] Section 5: Item 5. The aluminum slope according to item 4, wherein the block pieces have connecting portions that engage with each other vertically.

[0031] Item 6: Item 6. The aluminum slope according to item 4 or 5, wherein a plurality of ribs extending in the long side direction are provided inside the plurality of block pieces between the upper and lower surfaces of the block pieces.

[0032] Section 7: 7. The aluminum slope according to any one of items 1 to 6, wherein a grip portion (15) is provided on at least one of the pair of second side portions of the block body.

[0033] Section 8: A plurality of aluminum slopes according to any one of items 1 to 7 are provided, The wide aluminum ramp is formed by connecting the plurality of aluminum ramps via hinges so as to be foldable and unfoldable.

[0034] Section 9: Item 9. The wide aluminum slope described in item 8, wherein the plurality of aluminum slopes are arranged with their second side portions facing each other, and the second side portions are connected via the hinge.

[0035] Section 10: The block body is provided in a plurality of pieces. Item 10. The wide aluminum slope according to item 8 or 9, wherein a grip portion is provided on the second side portion of the block body at at least one end portion of the plurality of aluminum slopes that is not connected by the hinge. [Explanation of symbols]

[0036] 1 Wide aluminum ramp 10 Aluminum ramp 10A Aluminum Slope 10a central part 10b,10c Slope 11 Block Letters 11a Top side 11a1 Long side of top surface 11a 11a2 Short side of top surface 11a 11b Bottom side 11b1 Long side of bottom surface 11b 11c, 11d: first side portion (longer side portion of block body 11) 11e, 11f: second side portion (side portion on the short side of the block body 11) 12a, 12b End members 12a1,12b1 End face 12a2,12b2 Ground plane 12a3, 12b3 Tapered surface 13 Board material 14 Urethane resin layer 15 gripping portion (grip portion of aluminum slope 10) 20 Hinge 25 Grip (Grip of wide aluminum slope 1) 30 block pieces 30a Upper surface of block piece 30 30b Lower surface of block piece 30 31 Block body 11 ribs 32 Rib of block piece 30 41 Connection portion between block body 11 and end members 12a, 12b 42 Connection portion of block piece 30

Claims

1. An aluminum block and A pair of end members; Aluminum plate and and The block body is a hollow rectangular member, the rectangular upper and lower surfaces; a pair of first side portions connected to and extending along the long sides of the upper surface and the lower surface; a pair of second side portions connected to the respective short sides of the upper surface and the lower surface; and The pair of end members are each triangular prism-shaped members, an end surface overlapping the first side portion of the block body so as to face the first side portion; a ground surface that is flush with the lower surface of the block body; a tapered surface that is connected to the upper surface of the block body and slopes downward; and The plate material is the end surfaces of the end members are respectively overlapped with the pair of first side portions of the block body and connected together, and are bonded to the upper surface of the block body and the tapered surfaces of the pair of end members, thereby covering the upper surface of the block body and the tapered surfaces of the pair of end members; Aluminum ramp.

2. 2. The aluminum slope according to claim 1, wherein a urethane resin layer is provided on at least the upper surface of the plate material.

3. 2. The aluminum slope according to claim 1, wherein a plurality of ribs extending in the long side direction are provided inside the block body between the upper surface and the lower surface.

4. 2. The aluminum slope according to claim 1, wherein the block body is formed by connecting a plurality of block pieces each made of a hollow rectangular member.

5. 5. The aluminum slope according to claim 4, wherein the block pieces have connecting portions that engage with each other vertically.

6. 5. The aluminum slope according to claim 4, wherein a plurality of ribs extending in the long side direction are provided inside the plurality of block pieces between the upper and lower surfaces of the block pieces.

7. 7. The aluminum slope according to claim 1, wherein a grip portion is provided on at least one of the pair of second side portions of the block body.

8. A plurality of aluminum slopes according to any one of claims 1 to 6 are provided, The wide aluminum ramp is formed by connecting the plurality of aluminum ramps via hinges so as to be foldable and unfoldable.

9. 9. The wide aluminum slope according to claim 8, wherein the plurality of aluminum slopes are arranged with the second side portions facing each other, and the second side portions are connected via the hinges.

10. The block body is provided in a plurality of pieces.

9. The wide aluminum slope according to claim 8, wherein at least one end of each of the plurality of aluminum slopes that is not connected by the hinge has a grip portion provided on the second side portion of the block body.

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