JP3848703B2 - Plastic pallet - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a synthetic resin pallet having a fork insertion slot used when various articles are transported.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, a synthetic resin pallet in which a fork insertion port is formed on a side surface of a synthetic resin pallet by using side surfaces of opposing girders and bars formed vertically between the girders is known.
[0003]
[Problems to be solved by the invention]
In the conventional synthetic resin pallet, in particular, the vicinity of the joint between the beam and the beam connected to the beam, that is, the strength of the upper corner of the fork insertion port is not sufficient, or this part is damaged, or There was a problem that the cross forming the fork insertion port was deformed.
[0004]
The objective of this invention is providing the synthetic resin pallet which improved the durability while solving the subject which the conventional synthetic resin pallet mentioned above has.
[0005]
[Means for Solving the Problems]
In order to achieve the above-mentioned object, the present invention includes, firstly, girders and upper and lower bars arranged between the girders, and along the depth direction of the fork insertion hole, A reinforcing recess is formed in the upper part , and the horizontal reinforcing wall of the reinforcing recess is configured to form a plane that is substantially flush with the horizontal part of the inverted T-shaped upper crosspiece . A part of the reinforcing recess extends above the fork insertion opening.
[0006]
【Example】
1 is an overall perspective view including a partially cutout portion of the synthetic resin pallet of the present invention, and is a vertical sectional view similar to FIGS. 2 and 2 which is a vertical sectional view taken along line II in FIG. Although FIG. 3 which is a figure demonstrates the Example of this invention, unless it exceeds the meaning of this invention, it is not limited to a present Example at all.
[0007]
As an example, P is a so-called four-way synthetic resin pallet having two fork insertion ports 1 on each side surface. The synthetic resin pallet P includes a front deck board 2 and a back deck board. 3. The front deck board 2 and the back deck board 3 are respectively positioned at the four cylindrical corner girders 4 located at the corners, the four cylindrical middle girders 5 located between the corners 4 and the center. Are connected by one cylindrical central beam 6.
[0008]
The corner girders 4 and the intermediate girders 5 are respectively connected by an upper beam 7 and a lower beam 8 that form part of the front deck board 2 and the rear deck board 3 and in which ribs are arranged in a lattice pattern. The upper beam 7 and the lower beam 8 include ribs (hereinafter simply referred to as “width direction ribs”) 7a and 8a along the width direction of the front edge of the fork insertion port 1 and the width direction of the front edge of the fork insertion port 1. Ribbons (hereinafter simply referred to as “depth ribs”) 7b and 8b along the depth direction of the fork insertion slot 1 are arranged in a lattice pattern. The fork insertion slot 1 is formed by the side wall 4a of the opposite corner beam 4, the side wall 5a of the intermediate beam 5, the upper beam 7 and the lower beam 8. In addition, the width direction rib 7a and the depth direction rib 7b which comprise the upper crosspiece 7 are respectively called the upper width direction rib 7a and the upper depth direction rib 7b, and the width direction rib 8a and the depth direction which comprise the lower crosspiece 8 respectively. The ribs 8b are referred to as a lower width direction rib 8a and a lower depth direction rib 7b, respectively.
[0009]
As shown in FIG. 2, the upper width direction rib 7 a and the upper depth direction rib 7 b forming the upper cross 7 are formed in an inverted T-shape in a vertical cross section perpendicular to the length direction. Further, as shown in FIG. 2, the lower width direction rib 8a and the lower depth direction rib 8b forming the lower crosspiece 8 are formed in a T-shaped vertical cross section perpendicular to the length direction. ing. In this way, by setting the rib shape to an inverted T shape or T shape, the strength, particularly the bending strength, of the upper beam 7 and the lower beam 8 forming the fork insertion slot 1 can be improved.
[0010]
A reinforcing recess 9 extending in the depth direction of the fork insertion slot 1 is formed along the side wall 4 a on the fork insertion slot 1 side at the upper part of the cylindrical corner beam 4. The reinforcing recess 9 is a horizontal reinforcing member that connects a reinforcing vertical wall 4c perpendicular to the top 4b of the corner beam 4, and a lower end of the reinforcing vertical wall 4c and the side wall 4a of the corner beam 4 on the fork insertion port 1 side. The wall 4d and the side wall 4a on the fork insertion slot 1 side of the corner beam 4 are surrounded and formed. The horizontal reinforcing wall 4d is configured to form a flat surface that is substantially flush with the horizontal portions 7a 'and 7b' of the above-described inverted T-shaped upper width direction rib 7a and upper depth direction rib 7b.
[0011]
Similarly, a reinforcing recess 10 extending in the depth direction of the fork insertion slot 1 is formed along the side wall 5a on the fork insertion slot 1 on the upper part of the cylindrical intermediate beam 5. This reinforcing recess 10 also has a horizontal reinforcing link that connects the vertical reinforcing wall 5c perpendicular to the top 5b of the intermediate girder 5 and the lower end of the reinforcing vertical wall 5c and the side wall 5a of the intermediate girder 5 on the fork insertion port 1 side. The wall 5d and the side wall 5a of the intermediate girder 5 on the fork insertion slot 1 side are surrounded. Similarly, the horizontal reinforcing wall 5d is configured to form a flat surface that is substantially flush with the horizontal portions 7a ′ and 7b ′ of the inverted T-shaped upper width direction rib 7a and the upper depth direction rib 7b. Yes.
[0012]
As described above, along the depth direction of the fork insertion slot 1, the reinforcing recesses 9 and 10 are provided on the corner girders 4 and the intermediate girders 5, and the horizontal reinforcing walls 4 d and 5 d of the reinforcing recesses 9 and 10 are provided. By forming the inverted T-shaped upper width direction rib 7a and the upper depth direction rib 7b so as to form a plane substantially flush with the horizontal portions 7a ′ and 7b ′, the corner girder 4 and the intermediate girder 5 and the upper part are formed. The strength in the vicinity of the junction with the crosspiece 7, that is, in the vicinity of the upper corner portion 1a of the fork insertion slot 1 can be improved. When the synthetic resin pallet P is lifted by the fork inserted into the fork insertion slot 1, it is in the vicinity of the junction between the corner beam 4 and the intermediate beam 5 and the upper beam 7, that is, in the vicinity of the upper corner 1 a of the fork insertion slot 1. In particular, since a large load is applied, the reinforcement of the upper corner portion 1a of the fork slot 1 is very important for improving the durability of the synthetic resin pallet P.
[0013]
Next, another embodiment of the present invention will be described with reference to FIG. In this embodiment, the horizontal reinforcing wall 4d of the above-described reinforcing recess 9 is extended by a predetermined amount in the direction of the intermediate girder 5 beyond the side wall 4a of the corner girder 4 on the fork insertion opening 1 side, and the horizontal reinforcing wall 4d. The remaining portion 4a 'of the side wall 4a is extended upward from the end on the fork insertion port 1 side. In other words, in this embodiment, an overhanging wall 4 a ′ in the direction of the intermediate beam 5 is formed on the side wall 4 a of the corner beam 4 on the fork insertion opening 1 side. A vertical reinforcing vertical wall 4c, a horizontal reinforcing wall 4d extending beyond the side wall 4a of the corner girder 4 on the fork insertion slot 1 side to the middle girder 5 direction, and a protruding wall 4a 'of the corner girder 4 A reinforcing recess 9 is formed. As in the above-described embodiment, the horizontal reinforcing wall 4d is configured to form a flat surface that is substantially flush with the horizontal portions 7a ′ and 7b ′ of the inverted T-shaped upper width direction rib 7a and the upper depth direction rib 7b. Has been. By adopting the structure as described above, a part of the reinforcing recess 9 enters the fork insertion slot 1, and further reinforcement in the vicinity of the upper corner 1 a of the fork insertion slot 1 can be realized.
[0014]
Similarly, a protruding wall 5a ′ extending in the direction of the corner beam 4 is formed on the side wall 5a of the intermediate beam 5 on the fork insertion slot 1 side, and the reinforcing vertical wall 5c perpendicular to the top 5b of the intermediate beam 5 is formed. A reinforcing recess 10 is formed by a horizontal reinforcing wall 5d extending beyond the side wall 5a of the intermediate girder 5 on the fork insertion slot 1 side to the direction of the corner girder 4 and a protruding wall 5a 'of the intermediate girder 5. Yes. As in the above-described embodiment, the horizontal reinforcing wall 5d is configured to form a plane substantially flush with the horizontal portions 7a 'and 7b' of the inverted T-shaped upper width direction rib 7a and the upper depth direction rib 7b. Has been. In this way, a part of the reinforcing recess 10 enters the fork insertion slot 1, and the upper corner 1 a of the fork insertion slot 1 can be further reinforced.
[0015]
In the embodiment described above, the reinforcing recess 9 is formed so as to extend in the depth direction of the fork insertion port 1 along the side wall 4a of the corner beam 4 on the fork insertion port 1 side. Since the two adjacent side walls 4a face the fork insertion slot 1, as shown in FIG. 1, the corner beam 4 is formed with a reinforcing recess 9 having a substantially L-shaped planar shape. It will be. Further, the reinforcing recess 10 is formed so as to extend in the depth direction of the fork insertion slot 1 along the opposite side wall 5a of the intermediate girder 5 on the fork insertion slot 1 side, as shown in FIG. In addition, two reinforcing recesses 10 are formed in the middle beam 5 in parallel.
[0016]
Although the case where the present invention is applied to a so-called four-way synthetic resin pallet P in which two fork insertion ports 1 are formed on each side surface has been described. Of these, it is also possible to apply to a so-called two-way synthetic resin pallet P in which the fork insertion port 1 is formed only on one opposing side surface. Alternatively, the synthetic resin pallet P may be formed in half in the vertical direction separately, and the formed half pallet may be applied to the synthetic resin pallet P formed by welding at the spar. it can.
[0017]
【The invention's effect】
Since the present invention is configured as described above, the following effects can be obtained.
[0018]
Along the depth direction of the fork insertion hole, a reinforcing recess is formed in the upper part of the girder, so the strength near the junction between the girder and the upper beam, that is, near the upper corner of the fork insertion hole can be improved, Accordingly, the durability of the synthetic resin pallet can be improved.
[0019]
Since the horizontal reinforcing wall of the reinforcing recess forms a flat surface that is substantially flush with the horizontal part of the inverted T-shaped upper beam, the vicinity of the junction between the beam and the upper beam, that is, the upper corner of the fork insertion port The strength in the vicinity of the portion can be further improved, and in particular, the bending strength of the upper crosspiece can be improved.
[Brief description of the drawings]
FIG. 1 is an overall perspective view including a partially notched portion of a synthetic resin pallet according to the present invention.
FIG. 2 is a vertical sectional view taken along line II in FIG.
FIG. 3 is a vertical sectional view similar to FIG.
[Explanation of symbols]
P ... Plastic plastic pallet 1 ... Fork insertion slot 2 ... Front deck board 3 ... Back deck board 4 .... Corner beam 5 ... Intermediate beam 6 ... Center beam 7 ... Upper beam 8 ... ..Lower bars 9, 10 ... Reinforcing recess

Claims (2)

It has a girder and upper and lower bars arranged between the girder, and has a reinforcing recess formed in the upper part of the girder along the depth direction of the fork insertion slot. A synthetic resin pallet characterized in that the wall is formed so as to form a plane substantially flush with the horizontal portion of the inverted T-shaped upper crosspiece . The synthetic resin pallet according to claim 1, wherein a part of the reinforcing recess extends above the fork insertion port .

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