JP5677265B2 - palette - Google Patents

Description

  The present invention relates to a pallet for placing and transporting a heavy product such as an electronic device, and more particularly to a method for improving the fixing strength of a girder member constituting the pallet.

  Conventionally, wooden pallets, metal pallets, and the like have been used as pallets for loading and transporting cargo. However, although wooden and metal pallets are excellent in durability, they are heavy and not only costly to dispose of them, but also have problems in terms of resource saving. For this reason, in recent years, corrugated cardboard pallets that can be recycled using waste paper as a material are widely used because they are less expensive to dispose of and cause less pollution and environmental pollution.

  The pallet has a structure in which a plurality of girder members are provided between the top surface and the bottom surface, and a forklift lift or an arm of a hand pallet (pallet carrying cart) is formed in the gap between the top surface and the bottom surface partitioned by the girder member. Insert the part and lift the pallet to transport the product placed on the pallet.

  By the way, in the conventional pallet, since the girder member was formed by bending corrugated cardboard, there was a problem that it was easily damaged by dropping or the like due to a lift operation during transportation.

  Therefore, a method for preventing damage by increasing the strength of the girder member has been proposed. For example, Patent Document 1 discloses a corrugated cardboard pallet composed of a prismatic body and a cylindrical body housed inside the prismatic body. A paper girder for use is disclosed. Patent Document 2 discloses a pallet girder member in which a plurality of paper tubes having different diameters are stacked and bonded together.

JP 2010-36915 A JP 2006-273407 A

  However, in the methods of Patent Documents 1 and 2, although the strength of the girder member itself is improved, the contact area between the prismatic body or paper tube constituting the girder member and the top and bottom surfaces of the pallet is small. It has been difficult to increase the fixing strength of the connection portion between the surface and the bottom surface.

  An object of this invention is to provide the pallet which can raise the intensity | strength of the connection part of a girder member and a top | upper surface or a bottom face with simple structure in view of the said problem.

  In order to achieve the above object, the present invention has a bottom surface, a top surface facing the bottom surface at a predetermined interval, and a plurality of girder members fixed to the top surface and the bottom surface. In the pallet, the girder member includes a hollow cylindrical main body portion and a flange portion integrally formed with at least one end of the main body portion, and at least one of the bottom surface and the top surface is a first sheet. The flange portion is sandwiched and fixed between the first sheet material and the second sheet material, and has a double structure composed of a material and a second sheet material.

  According to the present invention, in the pallet configured as described above, the girder member has the flange portions at both ends of the main body portion.

  According to the present invention, in the pallet configured as described above, the girder member includes a first girder member having a first flange portion formed at one end of the first main body portion, and a second main body portion inscribed in the first main body portion. A second girder member having a second flange portion formed at one end is formed by combining the first main body portion and the second main body portion so that the first flange portion and the second flange portion are disposed at both end portions. It is characterized by being.

  According to the present invention, in the pallet configured as described above, a paper tube is mounted on the outer peripheral surface of the main body.

  According to the present invention, in the pallet having the above configuration, the girder member includes a first girder member in which a first flange portion is formed at one end of the first main body portion, and a second main body portion having the same diameter as the first main body portion. A second girder member having a second flange portion formed at one end thereof, and the first main body portion and the second main body portion so that the first flange portion and the second flange portion are disposed at both ends. A paper tube is mounted on the outer peripheral surfaces of the first main body portion and the second main body portion that are formed and include the abutting portion.

  According to the present invention, in the pallet configured as described above, the girder member is characterized in that a plurality of the main body portions are connected by the flange portions.

  According to the present invention, in the pallet configured as described above, the girder member is integrally formed by a pulp mold, and the bottom surface and the top surface are formed by a corrugated cardboard sheet.

  According to the first configuration of the present invention, the first sheet material that uses the girder member integrally formed with the flange portion at at least one end portion of the hollow cylindrical main body portion and further constitutes at least one of the top surface or the bottom surface. And, by sandwiching and fixing the flange portion between the second sheet material, the bonding area between the girder member and at least one of the top surface or the bottom surface is widened, so that the girder member and at least one of the top surface or the bottom surface are connected. The strength of the part can be increased.

  Moreover, according to the 2nd structure of this invention, in the pallet of the said 1st structure, by using the girder member which has a flange part in the both ends of a main-body part, the connection part of a girder member, a top | upper surface, and a bottom face is used. Both strengths can be increased.

  Moreover, according to the 3rd structure of this invention, in the pallet of the said 2nd structure, it uses combining the 1st girder member and the 2nd girder member in which the flange part was formed only in one edge part of a main-body part. Thus, it is possible to increase the strength of both the connecting portion between the girder member and the top surface and the bottom surface, and to simplify the structure of the mold used for forming the girder member. Moreover, since a main-body part becomes a double structure, the intensity | strength of the girder member itself also improves.

  According to the fourth configuration of the present invention, in the pallet having any one of the first to third configurations, the girder member is attached to the main body portion by attaching the paper tube to the outer peripheral surface of the main body portion of the girder member. And a double structure of paper tube. Therefore, the strength of the girder member itself becomes stronger.

  Further, according to the fifth configuration of the present invention, in the pallet having the second configuration, the first girder member and the second girder member in which the flange portion is formed only on one end portion of the main body portion are used in combination. Thus, it is possible to increase the strength of both the connecting portion between the girder member and the top surface and the bottom surface, and to simplify the structure of the mold used for forming the girder member. Moreover, a 1st girder member and a 2nd girder member can be firmly fixed by mounting | wearing a paper tube with the outer peripheral surface of the 1st main-body part containing a butting | matching part, and a 2nd main-body part. Furthermore, since the girder member has a double structure of the main body and the paper tube, the strength of the girder member itself is further increased.

  Further, according to the sixth configuration of the present invention, in the pallet having any one of the first to fifth configurations, the longitudinal direction of the pallet is obtained by using the girder member in which the plurality of main body portions are connected by the flange portion. A plurality of girder members in the (or lateral direction) can be formed at the same time, and the girder member positioning operation is also simplified.

  Moreover, according to the seventh configuration of the present invention, in the pallet having any one of the first to sixth configurations, the girder member is integrally formed by a pulp mold, and the bottom surface and the top surface are formed by a corrugated cardboard sheet. The corrugated cardboard pallet has a high strength at the connecting portion between the girder member and the top surface or the bottom surface, and does not require a sorting operation at the time of disposal and has a low environmental load.

Schematic perspective view showing the structure of the cardboard pallet 1 of the present invention The side view which shows a mode that a product is packed using the cardboard pallet 1 of this invention. The fragmentary sectional view containing the girder member 4 of the cardboard pallet 1 according to the first embodiment of the present invention. Partial sectional view including the girder member 4 of the cardboard pallet 1 according to the second embodiment of the present invention. Partial sectional view including the girder member 4 of the cardboard pallet 1 according to the third embodiment of the present invention. Partial sectional view including the girder member 4 of the cardboard pallet 1 according to the fourth embodiment of the present invention. The perspective view which shows the modification of the 1st girder member 4a used for the cardboard pallet 1 of 2nd Embodiment.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view showing a schematic configuration of a cardboard pallet 1 of the present invention, and FIG. 2 is a side view showing a state in which a product is packed by using the cardboard pallet 1 of the present invention also as a bottom surface of a packaging case 8. is there. The top surface 2 and the bottom surface 3 of the cardboard pallet 1 are made of a corrugated cardboard sheet, and a plurality of beam members 4 are provided between the top surface 2 and the bottom surface 3.

  On the four sides of the top surface 2 of the cardboard pallet 1, flaps 5 are continuously provided via folding lines. A through hole 6 a is formed at the center of each flap 5. The usage of such a corrugated cardboard pallet 1 is shown in FIG. First, an object to be packed (not shown) is placed on the top surface 2 of the cardboard pallet 1, covered with the cylindrical side surface portion 7, and then the flaps 5 are raised.

  A through hole 6b is formed below the side surface portion 7 at a position that overlaps the through hole 6a when the flap 5 is erected, and a fastener (not shown) is inserted with the through holes 6a and 6b overlapped. Thus, the cardboard pallet 1 and the side surface portion 7 are integrally connected. That is, the cardboard pallet 1 also serves as the bottom surface of the packaging case 8 constituted by the cardboard pallet 1 and the side surface portion 7. By using such a corrugated cardboard pallet 1, it is not necessary to place a corrugated cardboard case on the corrugated cardboard pallet 1 after the product is packed, so that particularly large products can be easily packed and transported.

  FIG. 3 is a partial cross-sectional view of the corrugated cardboard pallet 1 according to the first embodiment of the present invention including the girder member 4 (cross-sectional view taken along the line AA ′ in FIG. 2). The girder member 4 used in the present embodiment has a hollow cylindrical main body 10 and flanges 11 integrally formed at both upper and lower ends of the main body 10. Examples of the material of the girder member 4 include pulp, synthetic resin, metal, and the like. By forming the girder member 4 with a hard pulp mold, the top surface 2 and the bottom surface 3 made of corrugated cardboard sheets are disposed when the corrugated cardboard pallet 1 is discarded. Because it can be disposed of together, it is efficient without the need for separate disposal. Moreover, since the synthetic resin member is not used, the burden on the environment can be reduced.

  The top surface 2 and the bottom surface 3 have a double structure composed of an outer first sheet material 2a and an inner second sheet material 2b, an outer first sheet material 3a and an inner second sheet material 3b, respectively. The flange portion 11 on the top surface 2 side of the girder member 4 is sandwiched between the first sheet material 2a and the second sheet material 2b, and the flange portion 11 on the bottom surface 3 side is sandwiched between the first sheet material 3a and the second sheet material 3b. It is sandwiched between and adhered.

  According to the configuration of the present embodiment, by forming the flange portions 11 at the upper and lower end portions of the girder member 4, the bonding area between the girder member 4 and the top surface 2 and the bottom surface 3 is widened by the flange portion 11. As a result, the girder member 4 can be firmly bonded to the top surface 2 and the bottom surface 3. Further, the top surface 2 and the bottom surface 3 have a double structure, and the flange portion 11 is sandwiched between the first sheet material 2a and the second sheet material 2b, and between the first sheet material 3a and the second sheet material 3b. Thus, the adhesive strength between the girder member 4, the top surface 2 and the bottom surface 3 is further improved.

  FIG. 4 is a partial cross-sectional view of the corrugated cardboard pallet 1 according to the second embodiment of the present invention including the girder member 4 (cross-sectional view taken along line AA ′ in FIG. 2). The girder member 4 used in the present embodiment has a first girder member 4a in which a flange portion 11a is formed at one end of the first main body portion 10a and a second diameter having an outer diameter inscribed in the first main body portion 10a. The main body portion 10b and the second girder member 4b having the flange portion 11b formed at one end of the second main body portion 10b are combined and bonded so that the flange portions 11a and 11b are located on the opposite side. is there. The configuration of the other parts of the cardboard pallet 1 and the material of the girder member 4 are the same as those in the first embodiment shown in FIG.

  In the girder member 4 of the first embodiment shown in FIG. 3, since the flange portions 11 are integrally formed at both ends of the main body portion 10, it is necessary to use a mold used for molding the girder member 4 as a split die. Yes, the mold structure becomes complicated. In this embodiment, by combining the first girder member 4a and the second girder member 4b in which the flange portions 11a and 11b are formed only on one end of the first main body portion 10a and the second main body portion 10b, The structure of a mold used when molding 4 can be simplified.

  Moreover, in this embodiment, since the 2nd main-body part 10b of the 2nd girder member 4b is inscribed in the 1st main-body part 10a of the 1st girder member 4a, the main-body part 10 has a double structure. Accordingly, the strength of the girder member 4 itself is stronger than that of the configuration of the first embodiment.

  FIG. 5 is a partial cross-sectional view of the corrugated cardboard pallet 1 according to the third embodiment of the present invention including the girder member 4 (cross-sectional view taken along the line AA ′ in FIG. 2). The girder member 4 used in the present embodiment includes a first girder member 4a in which a flange portion 11a is formed at one end of the first main body portion 10a, and a second main body portion 10b having the same diameter as the first main body portion 10a. And the second girder member 4b having the flange 11b formed at one end of the second body 10b, the first body 10a and the second body so that the flanges 11a and 11b are located on the opposite side. The first girder member 4a and the second girder member 4b are bonded firmly by bonding the paper tube 13 to the outer peripheral surfaces of the first main body 10a and the second main body 10b including the butted portion 12. It is. The configuration of the other parts of the cardboard pallet 1 and the material of the girder member 4 are the same as those in the first embodiment shown in FIG.

  Also in this embodiment, as in the second embodiment shown in FIG. 4, the first girder member in which the flange portions 11a and 11b are formed only at one end of the first main body portion 10a and the second main body portion 10b. By combining 4a and the 2nd girder member 4b, the structure of the metal mold | die used when shape | molding the girder member 4 can be simplified. Moreover, in this embodiment, since the paper tube 13 is bonded to the outer peripheral surfaces of the first main body portion 10a and the second main body portion 10b, the girder member 4 is formed of the first main body portion 10a, the second main body portion 10b, and the paper tube 13. It has a double structure. Accordingly, the strength of the girder member 4 itself is stronger than that of the configuration of the first embodiment.

  FIG. 6 is a partial cross-sectional view of the corrugated cardboard pallet 1 according to the fourth embodiment of the present invention including the girder member 4 (cross-sectional view taken along the line AA ′ in FIG. 2). The girder member 4 used in the present embodiment has a flange portion 11 formed only at one end portion of the main body portion 10. The flange portion 11 is disposed on the top surface 2 side and the top surface 2 is configured. The flange portion 11 is sandwiched and bonded between the first sheet material 2a and the second sheet material 2b. Further, a paper tube 13 is bonded to the outer peripheral surface of the main body 10. The configuration of the other parts of the cardboard pallet 1 and the material of the girder member 4 are the same as those in the first embodiment shown in FIG.

  Also in this embodiment, similarly to the second embodiment shown in FIG. 4 and the third embodiment shown in FIG. 5, the beam member 4 in which the flange portion 11 is formed only at one end portion of the main body portion 10 is used. By using, the structure of the metal mold | die used when shape | molding the girder member 4 can be simplified. Further, since the paper tube 13 is bonded to the outer peripheral surface of the main body 10, the girder member 4 has a double structure of the main body 10 and the paper tube 13. Accordingly, the strength of the girder member 4 itself is stronger than that of the configuration of the first embodiment.

  In the present embodiment, the flange portion 11 is not formed at the lower end (bottom surface 3 side) of the girder member 4, and the bottom surface 3 does not have a double structure. Therefore, the adhesive strength between the bottom surface 3 and the girder member 4 is slightly inferior compared to the first to third embodiments. However, the adhesive strength between the top surface 2 and the girder member 4 is improved as compared with the conventional case.

  In addition, although the structure which used the top surface 2 which consists of the 1st sheet material 2a and the 2nd sheet material 2b here and arrange | positioned the flange part 11 to the top surface 2 side of the main-body part 10 was demonstrated, the 1st sheet material 3a was demonstrated. And the second sheet material 3b, the flange portion 11 is disposed on the bottom surface 3 side of the main body portion 10, and the flange portion 11 is sandwiched between the first sheet material 3a and the second sheet material 3b. It may be adhered.

  FIG. 7 is a perspective view showing a modification of the first girder member 4a used in the cardboard pallet 1 according to the second embodiment of the present invention. In the first girder member 4a shown in FIG. 7, the first main body 10a is integrally formed at three locations of the flat rectangular flange portion 11. That is, the flange portions 11 of the three first girder members 4a are connected and integrated.

  By using the first girder member 4a as shown in FIG. 7 and the second girder member 4b having the same configuration as the first girder member 4a, the vertical direction (or horizontal direction) of the cardboard pallet 1 shown in FIG. Can be formed on the top surface 2 and the bottom surface 3 at the same time, and the positioning work of the first girder member 4a and the second girder member 4b in the vertical direction (or the horizontal direction) becomes unnecessary. Therefore, the assembly work efficiency of the cardboard pallet 1 is improved.

  Here, the first and second girder members 4a and 4b used in the cardboard pallet 1 of the second embodiment have been described. However, the first and second girder members 4a and 4b used in the cardboard pallet 1 of the third embodiment Since the girder member 4 used in the cardboard pallet 1 of the first and fourth embodiments has the same configuration, the assembly work efficiency of the cardboard pallet 1 can be improved.

  In addition, this invention is not limited to the said embodiment, A various change is possible in the range which does not deviate from the meaning of this invention. For example, in each of the above embodiments, the corrugated cardboard pallet 1 with the flap 5 is used and the side surface portion 7 and the flap 5 are connected using the fastener, but the present invention can also be applied to the corrugated cardboard pallet 1 without the flap 5. Of course.

  Moreover, although FIG. 7 demonstrated the case where the three 1st girder members 4a (girder member 4) were integrated, two or four or more 1st girder members 4a (girder member 4) should be integrated. You can also. Further, the shape and number of the girder members 4 are not limited at all, and can be freely designed according to the specifications of the cardboard pallet 1.

  Further, here, the top surface 2 and the bottom surface 3 have been described with a corrugated cardboard pallet formed with a corrugated cardboard sheet, but the present invention is formed with a resin pallet with the top surface 2 and the bottom surface 3 formed with a resin sheet, or wood. Needless to say, the present invention can also be used for a wooden pallet made of metal and a metal pallet made of a metal plate.

  INDUSTRIAL APPLICATION This invention can be utilized for the pallet which inserts and conveys the arm part of a forklift or a hand pallet in the clearance gap between the top | upper surface divided by the girder member, and a bottom face. By utilizing the present invention, it is possible to provide a pallet that can widen the bonding area between the girder member, the top surface, and the bottom surface, and that can effectively prevent damage to the connecting portion between the girder member, the top surface, and the bottom surface. .

DESCRIPTION OF SYMBOLS 1 Corrugated board pallet 2 Top surface 2a 1st sheet material 2b 2nd sheet material 3 Bottom surface 3a 1st sheet material 3b 2nd sheet material 4 Girder member 4a 1st girder member 4b 2nd girder member 10 Main body part 10a 1st main body part 10b 2nd main-body part 11 Flange part 11a 1st flange part 11b 2nd flange part 13 Paper tube

Claims (4)

In a pallet having a bottom surface, a top surface opposed to the bottom surface with a predetermined interval, and a plurality of girder members fixed to the top surface and the bottom surface,
The girder member has a hollow cylindrical main body portion and flange portions integrally formed at both ends of the main body portion, and a first girder member having a first flange portion formed at one end of the first main body portion. And a second girder member having a second flange portion formed at one end of the second body portion inscribed in the first body portion, and the first and second flange portions are disposed at both ends. Formed by combining the first and second body parts,
At least one of the bottom surface and the top surface has a double structure including a first sheet material and a second sheet material, and the flange portion is sandwiched and fixed between the first sheet material and the second sheet material. Pallet characterized by that. The pallet according to claim 1, wherein a paper tube is mounted on an outer peripheral surface of the main body . The pallet according to claim 1 , wherein the girder member includes a plurality of the main body portions connected by the flange portion . The pallet according to any one of claims 1 to 3, wherein the girder member is integrally formed by a pulp mold, and the bottom surface and the top surface are formed by a corrugated cardboard sheet .

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