JP2010137876A - Synthetic resin pallet - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To suppress decrease in the strength and rigidity of lower connecting bar sections, also to suppress the strength and rigidity of a synthetic resin pallet itself, and to reduce the weight of the synthetic resin pallet, by eliminating the need for the opening side lower connecting bars of the lower connecting bars composing the lower connecting bar sections. <P>SOLUTION: The synthetic resin pallet has corner beams 1, intermediate beams 2, middle beams 3, upper connecting bar sections 4 and 6, and the lower connecting bar sections 5 and 7. The pallet also has openings 9 surrounded by the lower connecting bar sections. In the pallet, the lower ends of the angular walls 1a3, 2a4, and 3a2 of the beams are extended in the directions of the lower connecting bar sections in the corners defined by the edges 5a1 and 7a positioned on the opening side of the lower connecting bar sections and the connecting internal walls 1a1, 2a1, and 3a1 of the beams. Thereby, cross-linking ribs connecting the lower connecting bar sections and the angular walls of the beams are formed. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a synthetic resin pallet used for transportation, transfer, storage and the like of articles.

  Conventionally, it has been arranged at the corners of a substantially square tube arranged at the four corners of a synthetic resin pallet, the intermediate beam of a substantially square tube arranged at the middle part of the corner beam, and the central part of the plastic pallet It has an approximately square cylindrical central girder, and the upper end of the corner girder and the upper end of the intermediate girder are connected by a corner girder / intermediate girder upper connecting beam, and the lower end of the corner girder and the middle The lower end of the girder is connected by a corner girder / intermediate girder lower connecting bar, and the upper end of the intermediate girder and the upper end of the central girder are connected by an intermediate girder / middle girder upper connecting bar. Furthermore, a synthetic resin pallet in which the lower end portion of the intermediate girder and the lower end portion of the central girder are connected by the intermediate girder / center girder lower connecting bar is disclosed in Patent Document 1 as an example. Yes.

JP 2007-308192 A

  The above-mentioned corner girder / intermediate girder lower connecting bar for connecting the lower end of the corner of the synthetic resin pallet and the lower end of the intermediate girder is arranged over substantially the entire width of the opposite side walls of the corner girder and the intermediate girder. It is composed of the connecting bars provided. Therefore, the weight of the synthetic resin pallet is increased, and there has been a problem that the recent weight reduction of the synthetic resin pallet cannot be achieved.

  In addition, the weight of the synthetic resin pallet can be reduced by reducing the number of connecting bars constituting the lower connecting bars of the corner and middle girders. However, if the number of connecting bars is reduced, the corner and intermediate girders can be reduced. The strength and rigidity of the lower connecting beam will decrease, and consequently the strength and rigidity of the synthetic resin pallet itself will decrease, and when the hand forklift wheel is placed on the lower beam of the corner / intermediate beam There was a problem that the corner beam and the middle beam lower connecting beam were damaged.

  An object of the present invention is to solve the problems of the above-described conventional synthetic resin pallet.

  In order to achieve the above-mentioned object, the present invention has a corner girder, intermediate girder, central girder, upper connecting beam part, and lower connecting beam part, and a composite having an opening surrounded by the lower connecting beam part. In the resin pallet, a lower end portion of the square wall of the girder is connected to a corner portion formed by an edge located on the opening side of the lower coupling beam portion and a connection inner wall of the beam. By extending in the direction, a bridging rib for connecting the lower connecting beam portion and the square wall of the beam is formed.

  By connecting the lower end of the corner wall of the beam to the corner formed by the edge located on the opening side of the lower connection beam and the connection inner wall of the beam, Since the bridging rib that connects the beam part and the square wall of the girder is formed, the lower connection beam part by deleting the lower connection beam located on the opening side of the lower connection beam constituting the lower connection beam part. The strength and rigidity of the pallet made of synthetic resin can be suppressed, the strength and rigidity of the pallet made of synthetic resin itself can be suppressed, and the weight of the pallet made of synthetic resin can be reduced.

  Examples of the present invention will be described below. However, the present invention is not limited to these examples as long as the gist of the present invention is not exceeded.

  1 is a corner girder arranged at the four corners of the synthetic resin pallet, 2 is an intermediate girder arranged at the middle part of the corner girder 1, and 3 is arranged at the central part of the synthetic resin pallet. The central digit.

  The upper end portion of the corner beam 1 and the upper end portion of the intermediate beam 2 are connected by a corner beam / intermediate beam upper connecting beam portion 4, and the lower end portion of the corner beam 1 and the lower end portion of the intermediate beam 2 are It is connected by a corner beam / intermediate beam lower connecting beam 5. Further, the upper end portion of the intermediate beam 2 and the upper end portion of the central beam 3 are connected by the intermediate beam / central beam upper connecting beam 6, and the lower end portion of the intermediate beam 2 and the lower end portion of the central beam 3 are connected to each other. Are connected by a middle beam / center beam lower connecting beam 7.

  In addition, each of the square shape regions surrounded by the two orthogonal cross-girder / intermediate girder upper connecting bars 4 and the two intermediate girder / middle girder upper connecting bars 6 orthogonal to each other has a rectangular shape. An upper auxiliary crosspiece 8 for connecting the opposite corner girder / intermediate girder upper connecting beam 4 and the intermediate girder / center girder upper connecting beam 6 is formed.

  Further, the back surface shape surrounded by the two orthogonal corner girders / intermediate girder lower connecting bars 5 and the two intermediate girders / middle girder lower connecting bars 7 is substantially rectangular. Such an auxiliary crosspiece 8 is not formed, and an opening 9 is formed. A fork insertion passage 10 is formed between the corner beam 1 and the intermediate beam 2 and between the intermediate beam 2 and the central beam 3.

  The corner girder 1 includes a substantially rectangular tube-shaped tube portion 1a, an appropriate rib 1b formed in the tube portion 1a, and the like. The cylindrical part 1a is located on the intermediate girder 2 side and is connected to two side walls that are substantially orthogonal to each other, in other words, the corner girder / intermediate girder upper coupling beam part 4 and the corner girder / middle girder lower coupling bar part 5 are coupled. Side wall (hereinafter referred to as intermediate girder-side connecting inner wall) 1a1 and two side walls (hereinafter referred to as outer walls) 1a2 located on the outer side and substantially orthogonal to each other, and substantially orthogonal to each other. The two intermediate girder-side connecting inner walls 1a1 are connected via a plate-like square wall (hereinafter referred to as a central girder-side square wall) 1a3 located at a corner facing the central girder 3.

  The intermediate girder 2 is constituted by a substantially rectangular tube-shaped tube portion 2a, an appropriate rib 2b formed in the tube portion 2a, and the like. The cylindrical portion 2a has two opposite side walls opposed to the intermediate girder-side connecting inner wall 1a1 of the corner girder 1, in other words, the corner girder / middle girder upper coupling beam portion 4 and the corner girder / middle girder lower coupling beam portion. 5 is connected to a side wall (hereinafter referred to as a corner-girder-side connecting inner wall) 2a1, an outer side wall (hereinafter referred to as an outer wall) 2a2, and a central girder 3 side. A side wall (in other words, a central girder-side connecting inner wall) 2a3 to which the intermediate girder / center girder upper connecting beam part 6 and the intermediate girder / center girder lower connecting beam part 7 are connected. Further, the corner girder-side connecting inner wall 2a1 and the central girder-side connecting inner wall 2a3 that are orthogonal to each other are flat corners located at corners facing the intermediate girder 2 and the other intermediate girder 2 located diagonally. It is connected via a wall (hereinafter referred to as a middle girder-side square wall) 2a4.

  The central girder 3 is composed of a substantially rectangular tube-shaped tube portion 3a, an appropriate rib 3b formed in the tube portion 3a, and the like. The cylindrical portion 3a has four side walls opposed to the intermediate girder 2, in other words, the side walls (hereinafter referred to as the intermediate girder / center girder upper connecting beam portion 6 and the intermediate girder / center girder lower connecting beam portion 7). The intermediate girder-side connecting inner wall 3a1 that has a middle girder-side connecting inner wall 3a1 and is substantially orthogonal to each other is a plate-like square wall (hereinafter referred to as a corner girder-side corner) positioned at a corner facing the corner girder 1. It is called a wall.) It is connected via 3a2.

  The central girder-side square wall 1a3 that constitutes the cylindrical portion 1a of the corner girder 1 and the corner girder-side square wall 3a2 that constitutes the cylindrical portion 3a of the central girder 3 are arranged so as to be substantially parallel to and opposite to each other. Further, the intermediate girder-side square walls 2a4 constituting the intermediate girder 2 positioned diagonally with respect to each other are disposed so as to be substantially parallel to and opposed to each other.

  The corner girder / intermediate girder lower connecting bar 5 includes a plurality of corner girder / middle girder lower connecting bars 5a that connect the intermediate girder side connecting inner wall 1a1 of the corner girder 1 and the corner girder side connecting inner wall 2a1 of the intermediate girder 2. It comprises a plurality of cross beams 5b that connect the corner beam / intermediate beam lower connection beam 5a. Of the corner beam / intermediate beam lower connection beam 5a, the corner beam / intermediate beam lower connection beam (hereinafter referred to as the opening side lower connection beam) 5a1 forming the opening 9 is the center of the corner beam 1. Without being connected to the girder-side square wall 1a3, it is separated from the vertical end of the central girder-side square wall 1a3 (joint portion between the intermediate girder-side connecting inner wall 1a1 and the central girder-side square wall 1a3) 1a3 ′ by a predetermined distance D1. ing. In other words, by removing a predetermined number of corner beams / intermediate girder lower connecting bars 5a that constitute the corner beam / middle girder lower connecting bars 5 located on the opening 9 side, the opening side lower connecting bars are removed. 5a1 can be separated from the vertical end 1a3 ′ of the central girder-side square wall 1a3. Thus, the weight of the synthetic resin pallet can be obtained by removing a predetermined number of the corner beams / intermediate beam lower connection bars 5a constituting the corner beam / intermediate beam lower connection bars 5 located on the opening 9 side. Can be reduced.

  Similarly, the opening-side lower connecting bar 5a1 that forms the opening 9 is not connected to the intermediate-girder-side square wall 2a4 that constitutes the intermediate girder 2, and the opening-side lower connecting bar 5a1 It is separated from the vertical end of the wall 2a4 by a predetermined distance D2 (joint portion between the corner girder side connecting inner wall 2a1 and the intermediate girder side corner wall 2a4) 2a4 ′.

  As described above, when a predetermined number of corner beams / intermediate beam lower connecting bars 5a constituting the corner beam / intermediate beam lower connecting bars 5 located on the opening 9 side are deleted, the lower corner beam / intermediate beam lower connecting bars 5a are connected. The strength and rigidity of the beam part 5 are reduced, and when the hand forklift wheel is placed on the corner beam / middle beam lower connection beam part 5, the corner beam / middle beam lower connection beam part 5 is damaged, The strength and rigidity of the synthetic resin pallet itself will decrease.

  Therefore, in the present invention, at the corner formed by the intermediate girder side connecting inner wall 1a1 of the corner girder 1 and the opening side lower connecting bar 5a1 of the corner girder / intermediate girder lower connecting bar 5, the opening side lower part is formed. A bridging rib H1 that connects the connecting bar 5a1 and the vertical end 1a3 ′ of the central girder-side square wall 1a3 is formed. The bridging rib H1 is formed by extending the lower end portion of the central girder-side square wall 1a3 in the direction of the opening-side lower connecting bar 5a1. By forming the bridging rib H1, the corner beam / intermediate beam located on the opening 9 side of the corner beam / intermediate beam lower connection beam 5a constituting the beam beam / intermediate beam lower connection beam part 5 is formed. It is possible to suppress a decrease in strength and rigidity of the corner beam / intermediate beam lower connection beam portion 5 by deleting the lower connection beam 5a, and it is possible to suppress a decrease in strength and rigidity of the synthetic resin pallet itself. Moreover, the weight of the synthetic resin pallet can be reduced.

  Similarly, at the corner formed by the corner girder side connecting inner wall 2a1 of the intermediate girder 2 and the opening side lower connecting bar 5a1 of the corner girder / intermediate girder lower connecting bar 5, the opening side lower connecting bar 5a1 and The bridge rib H2 is formed to connect the vertical end 2a4 ′ of the intermediate girder-side square wall 2a4. The bridging rib H2 is formed by extending the lower end portion of the intermediate girder-side square wall 2a4 in the direction of the opening-side lower connecting bar 5a1. By forming such a bridging rib H2, among the corner beam / intermediate lower link bar 5a constituting the corner beam / intermediate beam lower connecting beam 5a, the corner beam / intermediate beam positioned on the opening 9 side. It is possible to further reduce the strength and rigidity of the corner beam / intermediate beam lower connection beam portion 5 due to the removal of the lower connection beam 5a, and further reduce the strength and rigidity of the synthetic resin pallet itself. Can be suppressed.

  The embodiment shown in FIG. 6 is formed at the corner formed by the intermediate girder-side connecting inner wall 1a1 of the corner beam 1 and the opening-side lower connecting beam 5a1 of the corner beam / intermediate beam lower connecting beam part 5. The both ends h1 of the formed bridging rib H1 are connected to the synthetic resin pallet from the opening side lower connecting bar 5a1 of the corner beam / middle beam lower connecting bar 5a constituting the corner beam / middle beam lower connecting bar 5a. It extends to the corner beam / intermediate beam lower connecting bar 5a2 located in the outer circumferential direction. By configuring in this way, the corner beam / intermediate girder lower connecting bar 5a that forms the corner beam / middle girder lower connecting bar 5a, the corner girder / middle girder lower connecting bar 5a is located on the opening 9 side. The strength and rigidity of the corner girder / intermediate girder lower connecting beam 5 due to the deletion can be further suppressed, and the strength and rigidity of the synthetic resin pallet itself can be further suppressed. it can.

  Further, as shown in FIG. 6, in the corner formed by the corner beam-side connecting inner wall 2 a 1 of the intermediate beam 2 and the opening-side lower connecting beam 5 a 1 of the corner beam / intermediate beam lower connecting beam 5. The end h2 of the bridging rib H2 formed on the corner girder / intermediate girder lower connecting bar 5 side is connected to the corner girder / middle girder lower connecting bar 5a. The opening side lower connecting bar 5a1 extends to the corner beam / intermediate beam lower connecting bar 5a2 positioned in the outer peripheral direction of the synthetic resin pallet. By configuring in this way, the corner beam / intermediate girder lower connecting bar 5a that forms the corner beam / middle girder lower connecting bar 5a, the corner girder / middle girder lower connecting bar 5a is located on the opening 9 side. It is possible to further reduce the strength and rigidity of the corner beam / intermediate beam lower connecting beam 5 due to the deletion, and to further suppress the strength and rigidity of the synthetic resin pallet itself. it can.

  Next, still another embodiment of the present invention will be described with reference to FIGS.

  In the present embodiment, the width (width perpendicular to the longitudinal direction of the intermediate girder / center girder lower connecting beam portion 7) W1 of the intermediate girder / center girder lower connecting beam portion 7 is set to By making it narrower than the width W2 of the central girder lower connecting beam portion 7, the corner portion is formed by the opening side edge portion 7a of the intermediate girder / central girder lower connecting beam portion 7 and the central girder side connecting inner wall 2a3 of the intermediate beam 2. Formed. Then, the opening side edge 7a of the intermediate girder / center girder lower connecting beam 7 constituting the corner and the vertical end 2a4 'of the intermediate girder side square wall 2a4 of the intermediate girder 2 are connected by the bridging rib H3. It is. The bridging rib H3 is formed by extending the lower end portion of the intermediate girder-side square wall 2a4 in the direction of the opening side edge 7a of the middle girder / center girder lower connecting bar portion 7 in the same manner as the above-described bridging rib H2. Has been. By forming such a bridging rib H3, the width and width of the intermediate girder / center girder lower connecting beam portion 7 are reduced, thereby suppressing a decrease in strength and rigidity of the intermediate girder / center girder lower connecting beam portion 7. It is possible to reduce the strength and rigidity of the synthetic resin pallet itself and to reduce the weight of the synthetic resin pallet.

  Further, as described above, by reducing the width W1 of the intermediate girder / center girder lower connecting beam part 7, the opening side edge 7a of the intermediate girder / center girder lower connecting beam part 7 and the intermediate girder of the central girder 3 are used. Corners are also formed between the side connection inner walls 3a1. Then, the opening side edge 7a of the middle girder / center girder lower connecting bar 7 constituting the corner and the vertical end of the corner girder side corner wall 3a2 of the middle girder 3 (the middle girder side connecting inner wall 3a1 and the corner girder side) 3a2 ') is joined by a bridging rib H4. The bridging rib H4 is formed by extending the lower end portion of the corner girder side square wall 3a2 in the direction of the opening side edge portion 7a of the intermediate girder / center girder lower connecting bar portion 7. By reducing the width W1 of the intermediate girder / center girder lower connecting beam 7 by forming such a bridging rib H4, the strength and rigidity of the intermediate girder / center girder lower connecting beam 7 are reduced. Further, it is possible to further suppress the decrease in strength and rigidity of the synthetic resin pallet itself.

FIG. 1 is a perspective view from above of a synthetic resin pallet according to the present invention. FIG. 2 is a perspective view from below of the synthetic resin pallet of the present invention. FIG. 3 is a partially enlarged perspective view from above of the horizontal section of the synthetic resin pallet of the present invention. FIG. 4 is a partially enlarged perspective view from below of the horizontal section of the synthetic resin pallet of the present invention. FIG. 5 is a back view of the synthetic resin pallet according to the present invention with a part thereof omitted. FIG. 6 is a partially enlarged perspective view from below of a horizontal section similar to FIG. 4 of another embodiment of the present invention. FIG. 7 is a partially enlarged perspective view from above of a horizontal section similar to FIG. 3 of still another embodiment of the present invention. FIG. 8 is a partially enlarged back view of still another embodiment of the present invention shown in FIG.

Explanation of symbols

H1 to H4 ... Bridging rib 1 ... Corner beam 2 ... Intermediate beam 3 ... ································································································· 5 Girder / middle girder lower connecting beam 6 ......... middle girder / middle girder upper connecting beam 7 ...... middle girder / middle girder Lower connecting frame

Claims (1)

  In the synthetic resin pallet having a corner beam, an intermediate beam, a center beam, an upper connection beam portion, and a lower connection beam portion, and having an opening surrounded by the lower connection beam portion, the opening of the lower connection beam portion A lower end of the corner wall of the beam is extended in the direction of the lower connection beam at the corner formed by the edge located on the side of the frame and the connection inner wall of the beam. A synthetic resin pallet is formed with a bridging rib connecting the square wall of the beam and the girder.

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