JP4303375B2 - Plastic pallet - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a synthetic resin pallet having a fork insertion hole into which a hand forklift can be taken in and out.
[0002]
[Prior art]
Conventionally, an intermediate girder having an intermediate girder having a substantially rectangular plane shape and a pair of end girders having a substantially rectangular shape arranged between the intermediate girder and connecting the upper deck board and the lower deck board. A pair of fork insertion holes formed between the pair of end girders, a so-called two-way synthetic resin pallet, and corner girders arranged at the four corners of the upper and lower deck boards, and the corner girders A so-called 4-way synthetic resin pallet is known, which has an intermediate girder arranged at the center and a central girder arranged at the center of the upper and lower deck boards, and a fork insertion hole is formed between each girder. The lower deck boards of these two-way synthetic resin pallets and four-way synthetic resin pallets are formed with openings so that the wheels of the hand forklift can come into contact with the ground or floor surface. In each And the connecting member is formed for connecting, hand forklifts to be inserted into the fork insertion hole wheel is configured to overcome the coupling member.
[0003]
[Problems to be solved by the invention]
In the case of the hand forklift, the wheel is folded (the wheel is closest to the fork side of the hand forklift) and inserted into the fork insertion hole p1. Generally, the distance to the upper surface, in other words, the thickness of the portion inserted into the fork insertion hole p1 is about 80 mm. On the other hand, in the case of a forklift, the thickness of the fork inserted into the fork insertion hole p1 is generally 35 to 55 mm. Accordingly, when the synthetic resin pallet p is made to be a hand forklift / forklift combined use specification that can be used for both a hand forklift and a forklift, naturally, the height h1 of the fork insertion hole p1 is set to the hand forklift specification. In the above example, the height h1 of the fork insertion hole p1 must be higher than 80 mm.
[0004]
Thus, when the synthetic resin pallet p is used as a hand forklift / forklift specification, the height h1 of the fork insertion hole p1 increases, and accordingly, the thickness d1 of the upper deck board p2 and the thickness of the lower deck board p3. There exists a problem that d2 becomes thin and the intensity | strength of the synthetic resin pallets p falls. If the overall height h2 of the synthetic resin pallet p is increased in order to prevent the strength of the synthetic resin pallet p from decreasing, the weight of the synthetic resin pallet p increases or the synthetic resin pallets p are stacked. Thus, the storage efficiency at the time of storage deteriorates, and the amount of raw material of the synthetic resin pallet p increases, and the synthetic resin pallet p becomes expensive.
[0005]
An object of the present invention is to solve the problems of the above-described conventional synthetic resin pallet.
[0006]
[Means for Solving the Problems]
In order to achieve the above-mentioned object, the present invention provides a corner girder arranged at the four corners of the upper and lower deck boards, an intermediate girder arranged between the corner girders, and a center arranged at the center of the upper and lower deck boards. The lower deck board is surrounded by the connecting member, and the lower deck board is surrounded by the connecting member. In the four-way synthetic resin pallet in which the opening is formed, the part of the portion through which the fork in which the wheel in the folded state of the hand forklift is arranged passes in a direction perpendicular to the fork insertion direction. While the thickness of the connecting member is reduced, the thickness of the connecting member other than the thinly formed portion is increased.
[0007]
【Example】
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.
[0008]
In FIG. 1, as an example, corner girders 1a, 2a arranged at the four corners of the upper and lower deck boards 1, 2; intermediate girders 1b, 2b arranged between the corner girders 1a, 2a; 2 and a central girder 1c, 2c arranged at the center of each of the two, and by welding the end portions of the corner girders 1a, 2a, the intermediate girders 1b, 2b, and the central girders 1c, 2c, A four-way synthetic resin pallet (hereinafter also simply referred to as a pallet) P having a fork insertion hole 3 formed therebetween is shown. The corner beam 2a and the intermediate beam 2b of the lower deck board 2 are connected by a connecting member 4, and the intermediate beam 2b and the central beam 2c of the lower deck board 2 are connected by a connecting member 5. The lower deck board 2 has an opening 6 surrounded by the connecting members 4 and 5.
[0009]
When the fork f1 of the hand forklift F is inserted from the opening of the fork insertion hole 3, the wheel f2 arranged to be foldable at the tip of the fork f1 is connected to the corner beam 2a and the intermediate beam 2b of the lower deck board 2. Past the connecting member 4 that connects the intermediate girder 2b and the central girder 2c of the lower deck board 2 through the opening 6 positioned on the side where the fork f1 is inserted. As shown in FIG. 5, it is configured to be placed on the ground or floor T below the opening 6 located farther from the side where the fork f1 is inserted.
[0010]
Note that. The connecting members 4 and 5 described above are inclined portions 4a and 5a that are directed upward along the fork insertion direction from the entrance of the fork insertion hole 3, and flat portions 4b and 5b that are formed continuously from the inclined portions 4a and 5a. And inclined portions 4c and 5c formed continuously from the flat portions 4b and 5b and extending downward along the fork insertion direction. The inclined portions 4a, 5a, 4c, and 5c as described above. Is formed so that the wheel f2 disposed at the tip of the fork f1 can easily get over the connecting members 4 and 5.
[0011]
Next, the configuration of the fork insertion hole 3 will be described mainly with reference to FIGS. 1 and 4.
[0012]
In this embodiment, the fork f insertion direction of the connecting member 4 for connecting the corner beam 2a and the intermediate beam 2b of the lower deck board 2 and the connecting member 5 for connecting the intermediate beam 2b of the lower deck board 2 and the central beam 2c. Only the thickness of the portion through which the fork f1 in which the wheel f2 of the hand forklift F is folded and the vicinity of the portion W1 passes is reduced. The height H1 of the fork insertion hole 3 is increased so that the fork f1 on which the wheel f2 in the folded state of the hand forklift F is disposed can pass. And the thickness of the connection members 4 and 5 of the other part W2 is made thick, and height H2 of the fork insertion hole 3 of the pallet P of this part is made high enough to allow the fork of the forklift to pass.
[0013]
As described above, only the thickness of the portion of the connecting members 4 and 5 through which the fork f1 passes and the portion W1 in the vicinity of the portion are reduced, and the thickness of the other portion W2 is increased. Since the decrease in strength of the connecting members 4 and 5 can be suppressed, the strength of the entire pallet P can be increased compared to the conventional pallet p in which the entire thickness of the connecting members 4 and 5 is reduced. The number of years can be increased. Further, the wheel f2 enters the opening 6 region located in the insertion direction of the fork f1 of the portion W2 of the connecting member 4, 5 other than the portion W1 near the portion of the connecting member 4, 5 through which the fork f1 passes. Since the lower deck board 2 can be expanded to this area, the opening 6 becomes smaller, and therefore the strength of the entire pallet P can be increased, and further, the service life of the pallet P can be increased. can do.
[0014]
As described above, the fork insertion having the connecting members 4 and 5 configured to reduce only the thickness of the portion through which the fork f1 passes and the vicinity W1 of the portion, and increase the thickness of the other portion W2. Although the hole 3 can be applied to all the fork insertion holes 3 of the four-way synthetic resin pallet P, as shown in FIG. 1, two forks formed on one opposite side face It can also be applied only to the insertion hole 3.
[0015]
【The invention's effect】
Since the present invention has the above-described configuration, the following effects can be achieved.
[0016]
Since only the thickness of the portion where the hand forklift wheel of the connecting member that connects the beams passes and the thickness of the portion in the vicinity of the portion is reduced and the thickness of the other portion is increased, the overall thickness of the connecting member is reduced. Compared with the conventional synthetic resin pallet, the strength of the entire synthetic resin pallet can be increased, and as a result, the useful life of the synthetic resin pallet can be increased.
[Brief description of the drawings]
FIG. 1 is a perspective view of a synthetic resin pallet as an example of the present invention.
FIG. 2 is a back view of the synthetic resin pallet as an example of the present invention shown in FIG. 1;
FIG. 3 is a plan view including a partially cutaway portion showing a part of a hand forklift of the synthetic resin pallet as an example of the present invention shown in FIG. 1;
4 is a vertical cross-sectional view including a part of the hand forklift along the line II in FIG. 3. FIG.
FIG. 5 is a vertical sectional view including a hand forklift along the line II-II in FIG. 3;
FIG. 6 is a front view of a conventional synthetic resin pallet.
[Explanation of symbols]
P ... Plastic plastic pallet 1 ... Upper deck 2 ... Lower deck 3 ... Fork insertion holes 4, 5 .... Connecting members

Claims (1)

A corner girder arranged at the four corners of the upper and lower deck boards, an intermediate girder arranged between the corner girder, and a central girder arranged at the center of the upper and lower deck boards, The middle girder and the middle girder of the lower deck board and the central girder are each connected by a connecting member, and the lower deck board is made of a four-way synthetic resin in which an opening surrounded by the connecting member is formed In the pallet, the thickness of the connecting member is reduced in the direction perpendicular to the fork insertion direction, and the portion of the hand forklift in which the fork with the folded wheels is disposed, and the pallet is formed thin. A pallet made of synthetic resin, characterized in that the thickness of the connecting member other than the part is increased.

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