JP4083588B2 - Plastic pallet - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a synthetic resin pallet used for transportation, transfer, storage and the like of articles.
[0002]
[Prior art]
Conventionally, in order to reduce the weight, the upper deck is connected to the corner beam and the intermediate beam and between the intermediate beam and the central beam. Similarly, it is composed of a crosspiece made up of crosspieces that intersect vertically and horizontally, and the lower deck is made up of a similar crosspiece that connects between the corner beam and the intermediate beam and between the intermediate beam and the central beam. A synthetic resin pallet is known (for example, Japanese Patent No. 2734077).
[0003]
[Problems to be solved by the invention]
Conventionally, various attempts have been made to reduce the weight, but for the purpose of reducing the weight, the strength and rigidity can be improved by further increasing the distance between the crosses that form the crosses of the upper and lower decks. There is a problem of lowering. In addition, if the opening is partially formed in the upper deck, the strength and rigidity are reduced, and when the load is slid on the upper deck, the load is caught on the edge of the opening or the load is damaged. There is a problem.
[0004]
An object of the present invention is to solve the problems of the above-described conventional synthetic resin pallet.
[0005]
[Means for Solving the Problems]
In order to achieve the above-mentioned object, the present invention provides a plastic pallet having a corner girder, a middle girder, and a central girder. First, a corner girder / middle girder lower connecting beam portion that forms a lower deck, An upper opening surrounded by a frame-like frame is formed on the upper deck located above the lower opening surrounded by the middle girder and the central girder lower connecting beam , and the frame-like frame Is suspended from the horizontal portion, the inclined portion inclined downward from the edge portion located on the upper opening side of the horizontal portion, and the edge portion of the horizontal portion located on the opposite side to the upper opening portion. It is composed of a vertical part and a frame-internal rib formed at a predetermined pitch in the frame-like frame part, and the lower end of the frame-internal rib arranged in the frame-like frame part moves away from the upper opening. according, which was formed to be inclined downward, secondly, The pitch of the formed edge shaped frame portion in-frame ribs is obtained by narrower than the pitch of the cross-bar of the connecting rail, which is disposed around the frame-shaped frame portion.
[0006]
【Example】
Hereinafter, examples of the present invention will be described with reference to FIGS. 1 to 6. However, the present invention is not limited to these examples as long as the gist of the present invention is not exceeded.
[0007]
The synthetic resin pallet includes a substantially square cylindrical corner girder 1 arranged at the four corners of the synthetic resin pallet, a substantially rectangular cylindrical intermediate girder 2 arranged at an intermediate portion of the corner girder 1, and a synthetic resin pallet. And a central girder 3 having a substantially rectangular tube shape disposed at the center.
[0008]
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.
[0009]
The top part 1 ′ and the bottom part 1 ″ of the corner beam 1 have an appropriate number of plate-like parts 1 a having a square shape or a substantially L shape in plan view. A diagonal plate 1d that connects 1b and the inner corner 1c and reaches the top 1 'and the bottom 1 "is formed. The top 2 'and the bottom 2 "of the intermediate girder 2 also have an appropriate number of plate-like parts 2a whose rectangular shapes are rectangular, and within the intermediate girder 2, there are up to the top 2' and the bottom 2". An appropriate number of partition plates 2b to be reached are formed. The top part 3 ′ and the bottom part 3 ″ of the central girder 3 also have an appropriate number of plate-like parts 3 a having a square shape or a substantially L-shaped planar shape. A diagonal plate 3c extending in the direction of the corner 3b is formed. The plate-like portion 1a constituting the top 1 'and the bottom 1 "of the corner beam 1 is lightened. The through-hole 1a1 can be appropriately drilled so as to drain water, and similarly, the plate-like portion 2a constituting the top 2 'and bottom 2 "of the intermediate girder 2 can be reduced in weight and drained. Thus, the through hole 2a1 can be appropriately drilled, and similarly, the plate-like part 3a constituting the top part 3 'and the bottom part 3 "of the central girder 3 can be reduced in weight and drained. The through hole 3a1 can be drilled as appropriate.
[0010]
In an area surrounded by two corner girders / intermediate girder upper connecting bars 4 that are adjacent and orthogonal to each other, and two middle girder / middle girder upper connecting bars 6 that are adjacent and orthogonal to each other The upper end of the inner corner 1 c of the corner beam 1, the upper end of the corner 3 b of the central beam 3 that is diagonal to the inner corner 1 c of the corner beam 1, and the intermediate beam 2 are mutually connected. A frame-shaped frame portion 8 that connects the upper end portion of the inner corner portion 2c at the diagonal position is formed. In addition, an area surrounded by two corner girders / intermediate girder lower connecting bars 5 that are adjacent and orthogonal to each other and two intermediate girders / middle girder lower connecting bars 7 that are adjacent and orthogonal to each other A lower opening 9 is formed. A fork insertion space 10 into which a fork can be inserted is formed between the corner beam 1 and the intermediate beam 2 and between the intermediate beam 2 and the central beam 3.
[0011]
Top 1 of the corner beam 1, 2 ′ of the center beam 2, 3 ′ of the center beam 3, the corner beam / middle beam upper connection beam 4, the middle beam / middle beam upper connection beam 6, and the frame The frame 8 forms an upper deck D1 on which articles are placed. The bottom 1 "of the corner beam 1, the bottom 2" of the intermediate beam 2, the bottom 3 "of the central beam 3, the corner beam A lower deck D2 placed on the floor or the like is constituted by the intermediate girder lower connecting beam part 5 and the intermediate girder / center girder lower connecting beam part 7.
[0012]
The frame-shaped frame portion 8 is formed of four frame members 8 ′ having a substantially inverted U-shaped cross-section perpendicular to the longitudinal direction, and an opening surrounded by the four frame members 8 ′. The frame-shaped frame portion 8 includes a horizontal portion 8a, an inclined portion 8b inclined downward from an edge located on the opening 8 ″ side of the horizontal portion 8a, and an opening 8. ”From the edge of the horizontal portion 8a located on the opposite side of the horizontal portion 8a. The vertical portion 8c is suspended substantially perpendicular to the horizontal portion 8a. As shown in FIG. 6, the cross-sectional shape perpendicular to the longitudinal direction may be an arcuate inclined portion 8b or an inclined portion 8b having a flat inclined surface.
[0013]
The lower end 8b1 of the inclined portion 8b constituting the frame-shaped frame portion 8 is located above the lower end 8c1 of the vertical portion 8c. In the substantially inverted U-shaped frame-shaped frame portion 8, plate-shaped frame inner ribs 8 d connected to the inner wall of the frame-shaped frame portion 8 are spaced substantially perpendicularly to the longitudinal direction at a predetermined interval. It is arranged. The lower end 8d1 of the inner rib 8d is formed so as to coincide with a straight line connecting the lower end 8c1 of the vertical portion 8c and the lower end 8b1 of the inclined portion 8b. Therefore, the lower end 8d1 of the inner rib 8d is the vertical portion 8c. Is inclined upward from the lower end 8c1 toward the lower end 8b1 of the inclined portion 8b. In other words, the lower end 8d1 of the in-frame rib 8d is inclined downward as the distance from the opening 8 ″ increases.
[0014]
The corner girder / intermediate girder upper connecting beam 4 disposed around the frame-shaped frame unit 8 includes a connecting beam 4a for connecting the corner beam 1 and the intermediate beam 2, and a cross beam 4b orthogonal to the connecting beam 4a. Similarly, the intermediate girder / center girder upper coupling beam portion 6 disposed around the frame-shaped frame portion 8 is also connected to the middle beam 2 and the central beam 3 with a coupling beam 6a. The cross bar 6b is orthogonal to the connecting bar 6a.
[0015]
The pitch of the ribs 8d in the frame formed in the frame-shaped frame portion 8 (the distance between the centers of the adjacent ribs 8d in the frame) is the upper part of the corner beam / intermediate beam arranged around the frame-shaped frame portion 8 The pitch of the cross beam 4b of the connecting beam 4 (the distance between the centers of the adjacent cross beams 4b) and the pitch of the cross beam 6b of the middle beam / center beam upper connecting beam 6 arranged around the frame-like frame 8 It is narrower than (the distance between the centers of the adjacent cross bars 6b).
[0016]
An opening 8 ″ formed in the frame-shaped frame portion 8 formed in the upper deck D1 is located immediately above the lower opening 9 formed in the lower deck D2, and the frame-shaped frame portion 8 The area of the opening 8 ″ is preferably about 40 to about 90% of the area of the lower opening 9. When the area of the opening 8 ″ of the frame-shaped frame 8 is smaller than about 40% of the area of the lower opening 9, the synthetic resin pallet having the opening 8 ″ formed in the frame-shaped frame 8 If the area of the opening 8 ″ of the frame-shaped frame portion 8 is larger than about 90% with respect to the area of the lower opening 9, the upper deck D1, as a result, The strength, rigidity, and durability of the synthetic resin pallet are reduced, and it cannot be used practically.
[0017]
As described above, since the opening (upper opening) 8 ″ is also formed in the upper deck D1 positioned above the lower opening 9 formed in the lower deck D2, the weight of the synthetic resin pallet is reduced. be able to.
[0018]
Further, since the opening (upper opening) 8 ″ formed in the upper deck D1 is formed in the frame-shaped frame portion 8, the upper deck D1 formed by forming the opening 8 ″ in the upper deck D1, As a result, the fall of the intensity | strength and rigidity of a synthetic resin pallet can be suppressed.
[0019]
Further, since the frame-like frame portion 8 constituting the upper deck D1 is formed with the inclined portion 8b inclined downward toward the opening (upper opening) 8 ″, the load placed on the upper deck D1 is slid. Even when the load is brought into contact with the inclined portion 8b, the load is easily placed on the upper deck D1 along the inclined portion 8b, and the load is brought into contact with the inclined portion 8b. There will be no damage.
[0020]
Furthermore, since the lower end 8d1 of the in-frame rib 8d disposed in the frame-shaped frame portion 8 is inclined downward as it moves away from the opening 8 ″, the fork insertion space portion is formed on the in-frame rib 8d. Even if the tip of the fork inserted into 10 comes into contact, as it moves away from the opening 8 ″, it is guided to the lower end 8 d 1 of the in-frame rib 8 d inclined downward, and the fork returns to the fork insertion space 10. Can be corrected.
[0021]
Still further, the pitch of the in-frame ribs 8d formed in the frame-shaped frame portion 8 is the pitch of the cross beam 4b of the corner beam / intermediate-girder upper connecting beam portion 4 arranged around the frame-shaped frame portion 8. The frame-shaped frame portion 8 having the opening 8 ″ is formed by forming it narrower than the pitch of the cross beam 6b of the intermediate girder / center-girder upper connecting beam portion 6 arranged around the frame-shaped frame portion 8. Accordingly, it is possible to suppress the lowering of the strength and rigidity of the upper deck D1, and consequently the synthetic resin pallet.
[0022]
【The invention's effect】
Since the present invention has the above-described configuration, the following effects can be achieved.
[0023]
Since the upper opening is also formed in the upper deck located above the lower opening formed in the lower deck, the weight of the synthetic resin pallet can be reduced.
[0024]
Since the upper opening formed in the upper deck is formed in the frame-shaped frame, it suppresses the strength and rigidity of the upper deck and by extension, the synthetic resin pallet due to the formation of the upper opening in the upper deck. can do.
[0025]
Since the frame-shaped frame part that constitutes the upper deck is formed with an inclined part that slopes downward toward the upper opening, when the luggage placed on the upper deck is slid, the luggage will hit the inclined part. Even if it comes into contact, the load can be easily placed on the upper deck along the inclined portion, and even if the load contacts the inclined portion, it will not be damaged.
[0026]
Since the lower end of the in-frame rib disposed in the frame-shaped frame portion is inclined downward as it moves away from the upper opening, the fork inserted into the fork insertion space is in contact with the in-frame rib. Even if it comes into contact, as it moves away from the upper opening, it is guided to the lower end of the in-frame rib that is inclined downward, and the fork is corrected to return to the fork insertion space.
[0027]
Since the pitch of the ribs in the frame formed in the frame-shaped frame part is made narrower than the pitch of the crossing bars of the connecting bars arranged around the frame-shaped frame part, the upper deck by forming the upper opening, As a result, the fall of the intensity | strength and rigidity of a synthetic resin pallet can be suppressed.
[Brief description of the drawings]
FIG. 1 is a perspective view of a synthetic resin pallet according to the present invention.
FIG. 2 is a rear perspective view of the synthetic resin pallet of the present invention.
FIG. 3 is a partial perspective view of a synthetic resin pallet according to the present invention.
FIG. 4 is a partial rear perspective view of the synthetic resin pallet of the present invention.
FIG. 5 is a partial back view of the synthetic resin pallet of the present invention.
FIG. 6 is a partial vertical sectional view of a frame-shaped frame portion constituting the synthetic resin pallet of the present invention.
[Explanation of symbols]
D1 ···························································································· 2 ………… Intermediate girder 3 ・ ・ ・ ・ ・ ・ ・ ・ Center girder 4 ・ ・ ・ ・ ・ ・ ・ ・ Corner girder / intermediate girder upper connecting bar Part 4a ······················································ 5 Lower connecting beam 5a ..... Connecting beam 5b .... Crossing beam 6 ..... Intermediate girder・ Center girder upper connecting beam 7 ・ ・ ・ ・ ・ ・ ・ ・ Intermediate girder ・ Center girder lower connecting beam 8 ・ ・ ・ ・ ・ ・ ・ ・ Frame-shaped frame 8 ”・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Upper opening 9 ・ ・ ・ ・ ・ ・ ・ ・ Lower opening

Claims (2)

In a plastic pallet having a corner girder, middle girder, and central girder The upper deck located above is formed with an upper opening surrounded by a frame-like frame portion, and the frame-like frame portion includes a horizontal portion and an edge located on the upper opening side of the horizontal portion. A frame formed at a predetermined pitch in the frame-shaped frame portion, an inclined portion inclined downward from the upper portion, a vertical portion suspended from the edge of the horizontal portion located on the opposite side of the upper opening, and a frame-shaped frame portion And the lower end of the frame inner rib disposed in the frame-shaped frame portion is formed so as to be inclined downward as the distance from the upper opening portion increases. Synthetic resin pallet. 2. The pitch of the ribs in the frame formed in the frame-like frame portion is formed to be narrower than the pitch of the crossing bars of the connecting beam portions arranged around the frame-like frame portion. Synthetic resin pallet.

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