JPH10258838A - Synthetic resin pallet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a synthetic resin pallet which makes it possible to stack the pallets with right-angled corners on the upper decks and increases the rigidity at the corners of a frame. SOLUTION: Projections 12 for widening the area of the upper face are horizontally extended at the upper and outer peripheral edges of the upper deck in this pallet. And four straight frame bodies 1 4 are erected on the upper ends of the projections. Circular parts 12a extended to the outer side than an intersection P of extention lines S1, S2 of respective adjacent frame bodies 14 crossing at right angles, are formed at the corners C. And reinforcing frames 19 continuously connected to the ends 14a, 14b of the frame bodies are erected in the upper end peripheral direction of the circularly extended parts 12a.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a synthetic resin pallet for carrying a load by, for example, a forklift.

[0002]

2. Description of the Related Art As is well known, wooden pallets used in combination with wooden frames have been widely used as pallets used to carry and move various kinds of luggage by a forklift. However, due to its material, there are difficulties such as an increase in weight and a decrease in durability. For this reason, recently, the lower deck and the entire upper deck provided on the lower deck via a support have been provided by molding a synthetic resin material, and various modifications have been made in the shape and structure (for example, See JP-B-52-39532.

[0003]

Generally, the most important task of a pallet is to support the load on the upper deck in a more reliable and stable state. In addition, when the pallet is not used, the pallet can be stably stacked and stored. There is a demand for the stabilization at the time of stacking each other by mixing a synthetic resin pallet and a wooden pallet. This is an important problem in order to avoid the danger such as stacking of loads and stacking when stacking each pallet, and also to enable stacking of more pallets.

[0004] However, in the above-mentioned conventional synthetic resin pallets, although reduction in weight and improvement in durability can be achieved, consideration is given to stable support of loads placed on the upper deck, and pallets including wooden pallets are included. The considerations such as positioning and stabilization at the time of stacking comrades are insufficient, so that not only safety cannot be sufficiently secured, but also stacking of wooden pallets becomes difficult.

Accordingly, the applicant of the present invention has disclosed Japanese Utility Model Publication No. 5-4428.
No. 1 has proposed a technique as described in Japanese Patent Publication No. That is, a projecting portion that enlarges the area of the upper surface of the upper deck extends horizontally on the upper outer peripheral edge of the upper deck,
A frame is erected at the upper end of the protruding portion, and a cutout is formed in each corner of the frame along the circumferential direction.

Therefore, the load on the upper deck can be stably supported by the frame, the positioning can be easily performed when different pallets are stacked, the lateral displacement can be prevented, and the cutouts in the corners can be provided. Since the corners of the upper pallet are absorbed, it is possible to stack even a wooden pallet having a right angle at the corner.

However, in the latter conventional example,
Since the notch is formed in the corner, each end on the notch side of each frame becomes a free end, and therefore, the rigidity of each end is reduced, and the durability after long-term use of the pallet is reduced. It may decrease.

[0008]

SUMMARY OF THE INVENTION The present invention has been devised in view of the above-mentioned conventional circumstances, and the invention according to claim 1 is characterized in that a flat rectangular upper deck is provided above a lower deck via a support. A synthetic resin pallet comprising: a protrusion that extends horizontally on the upper outer peripheral edge of the upper deck, and that extends a surface area of the upper deck upper surface, and a frame body is erected at an upper end of the protrusion. At the corner of the protruding portion, a reinforcing frame portion continuously and integrally connected to the frame body is erected outside an intersection where an extension of an inner peripheral surface of each of the adjacent frame bodies is orthogonal to each other. .

According to a second aspect of the present invention, an extension is provided in which the extension of the inner peripheral surface of each of the adjacent frames at the corner of the projecting portion extends outward from an intersection at which the extension lines of the inner peripheral surfaces of the frame bodies are orthogonal to each other. An extension is provided, and the reinforcing frame is erected integrally with the extension on the outer peripheral edge at the upper end of the extension.

The invention according to claim 3 is characterized in that the extending portion is formed so as to extend in a substantially semicircular shape in the horizontal direction.

According to a fourth aspect of the present invention, the reinforcing frame is
It is characterized in that it is formed in a substantially semi-annular shape, and its height and thickness and width are set to be substantially the same as those of the frame.

The invention according to claim 5 is characterized in that a through hole for drainage is provided in a base portion of the frame body from the inner peripheral surface to the outer peripheral surface of the frame body.

Therefore, since the load placed on the upper deck is held by the frame, the load is stabilized and the load is prevented from being inadvertently dropped from the upper deck. When the pallet is placed, the upper pallet can be easily and reliably positioned by the frame, and a stable stacking can be performed because a lateral shift is prevented.

In addition, since the reinforcing frame portions continuously and integrally connected to the frame are provided at each corner of the projecting portion, the rigidity of the frame at each corner is improved, and the reinforcing frame is provided between the two frames. Since the corners are arranged outside the intersection of the extension lines, when the pallets with the right corners are stacked, the right-angled corners are absorbed into the inside of the reinforcing frame, so that various pallets are stacked. be able to.

[0015]

Embodiments of the present invention will be described below in detail with reference to the drawings.

That is, As shown in FIGS. 1 to 5, the synthetic resin pallet according to the present invention has a square lower deck 1 having the same area as a general standard wooden pallet, and four upper corners and four sides of the lower deck 1 and a diagonal line. Nine hollow columns 2a to 2i erected at the upper center position;
The upper deck 3 has a square upper deck 3 which is provided at the upper part of a to 2i and whose upper surface 4 is formed flat. The above support 2a
2i to 2i, the upper and lower divided columns are integrally joined by welding, and are adjacent to each other.
2 hours each pair of forklift fork
5, 6, and 6 are formed on four sides.

As shown in FIG. 2, the lower deck 1 has frame-like connecting portions 7A to 7F for connecting the columns 2a to 2i.
And four square spaces 8 surrounded by the connection portions 7A to 7F. The connection portions 7A to 7F have a lattice shape, and a plurality of rectangular holes 7c are provided between the vertical and horizontal beam members 7a and 7b. Are formed. In addition, FIG.
The three parallel connecting portions 7A, 7B, 7C in the figure sandwiching the laterally central supports 2g, 2i, 2b are tapered on the outer surface in order to facilitate the loading and unloading of the pallet moving cart. And the entire upper edge is substantially trapezoidal.

Further, at predetermined positions of the connecting portions 7A to 7F,
A plurality of rubber gumlots 9 to prevent slippage between the pallet and the ground surface or the lower pallet during stacking.
Is fitted.

Furthermore, the lower connecting portions 7A to 7F of the lower deck 1 in the vertical direction in the figure, that is, the left and right insertion ports 6, 6,
As shown in FIG. 4, a pair of elongated notched grooves 10, 10 are formed on the lower surfaces of the connecting parts 7D, 7D, 7F, 7F located at 6, 6 and the connecting parts 7E, 7E in the longitudinal center. The notch grooves 10 and 10 are used to prevent the load from being cut off by friction with the grounding surface of the fixing band through a fixing band for fixing the cargo to the upper surface of the upper deck 3 and to detect a position when the pallet is used in an automatic warehouse. It is provided for.

Each of the columns 2a to 2i has a substantially circular cross section, but the columns 2a, 2c, 2f, 2 at both ends.
h has an inner peripheral surface which is slightly bulged inward with a small radius of curvature in order to improve the fork insertion guideability, and has eight columns 2a located on the outer side. ~
The outer surface of 2h is formed flat for attaching a display label or the like or engraving a character or the like. still,
In FIG. 2, the width of the space between the adjacent columns 2a to 2i is set to be slightly larger on the horizontal side than on the vertical side, so that the opening areas of the insertion ports 5, 6 are larger than those on the vertical sides 6, 6. The upper deck 3, which is also slightly larger on the lateral sides 5, 5, has the lower deck connecting portion 11 on the upper surface 4 as shown in FIGS. 1 and 5. The connecting portion 11 has vertical and horizontal members 11a and 11b, and a plurality of rectangular through holes 11c communicating with the rectangular holes 7c are vertically formed.

On the outer periphery of the upper surface 4, as shown in FIGS. 1 to 4, a projecting portion for setting each peripheral length to be slightly longer than each peripheral length of the lower deck 1 to enlarge the area of the upper surface 4. 12
Extend horizontally.

The projecting portion 12 has a plurality of substantially triangular reinforcing ribs 13 provided on the lower surface thereof at equal intervals in the longitudinal direction, and four elongated plate-like linear frame members 14 extending along each side of the upper end. It stands upright. Also, each of the corners C of the protruding portion 12 is adjacent to each of the frame bodies 14
An extension 12a is provided integrally, which extends outward from an intersection P where the extension lines S, S of the respective inner surfaces are orthogonal to each other. The extending portion 12a has a substantially circular shape, and is formed to extend horizontally outward from the protruding portion 12 so as to further increase the area of the upper surface 4 of the upper deck 3. At a predetermined position of the projecting portion 12, a through hole for drainage is formed which penetrates in a vertical direction.

Each of the frame members 14 is integrally formed with four projections 15 at predetermined upper and lower positions at equal intervals, and extends along the outer peripheral edge of the upper end of each of the extending portions 12a. 19 are provided respectively. Each of the reinforcing frame portions 19
It has a semi-annular shape, its height and thickness are set to be the same as those of the frame 14, and both ends are continuously and integrally connected to the opposite ends 14a and 14b of the frames 14. . Further, at a predetermined position on the base side of the frame body 14, a through hole 14c for drainage is formed from the inner peripheral surface to the outer peripheral surface.

At predetermined positions of the upper deck 3, a plurality of non-slip rubber grommets 16 whose upper and lower ends penetrate the deck board are provided. Further, the frame 1
A plurality of reinforcing protrusions 18 are formed at predetermined intervals on the inner surface of the fourth protrusion 15.

Therefore, since the outer peripheral edge of the lower end of the load placed on the upper surface 4 of the upper deck 3 is held by the frame 14, the load can be stably supported, and carelessness from the upper deck upper surface 4 can be ensured. Dropping is reliably prevented.

When the pallets are stacked and stored when the pallets are not used, the outer peripheral surface of the lower deck 1 of the upper synthetic resin pallet having the same shape is regulated by the frame 14 so as to be positioned with respect to the lower pallet. Is performed easily and reliably, and the lateral displacement during stacking is prevented, so that the pallets can be stably stacked.

Moreover, since the extending portion 12a and the reinforcing frame portion 19 are located outside the intersection P, that is, provided outside the intersection P, the corners of the lower deck of the stacked upper pallets are at right angles. However, since the corners can be absorbed, even a wooden pallet having a right-angled corner can be stacked. When synthetic resin pallets of the same shape are stacked, the lower deck corners of the upper pallet are supported by the ends 14a and 14b of each frame 14 on the reinforcing frame 19 side.
The stabilization of the stacked state is further improved in combination with the support by the above.

Further, in each frame 14, since both ends 14a, 14b on the corner C side are connected to each other by the reinforcing frame 19, the rigidity of the ends 14a, 14b is increased. Therefore, the durability of the corners of each frame 14 is improved, and even if luggage or the like slides on
a and 14b can sufficiently prevent the occurrence of cracks and breakage.

Further, since the projections 15 are formed on the frame 14, even if, for example, luggage or the like slides on the upper deck upper surface 4 and collides with the frame 14, the projections 15 are deformed outward to reduce the impact force. Absorbing, that is, damping action, sufficiently prevents damage to the luggage and the frame itself.

When the pallet itself is moved to another place, the pallet may be moved upright without using a forklift or the like. In this case, many scratches are formed on the side surface of the pallet on the ground side. There is a problem that not only is it attached, the corners and the like are damaged, but also the display labels and the like are broken.

However, since the projecting portion 12 and the extending portion 12a are formed on the synthetic resin pallet of the present embodiment,
The standing posture of the pallet cannot be maintained, and dragging movement becomes difficult. Further, even if dragging is performed, contact with the ground on the side surface of the pallet is avoided by the extension portion 12a, so that scratches, breakage of display labels, and the like can be reliably prevented.

The through holes 11c of the upper deck 3 and the rectangular holes 7c of the lower deck 1 can effectively drain rainwater or the like adhering to the upper deck upper surface 4 and the like to the outside of the pallet as well as the vertical and horizontal members 7a, 7b, 11a, Since 11b faces downward, the drainage effect can be improved. Also, rainwater and the like on the upper surface 4 can be quickly discharged through the through holes 14c formed in the frame body 14 and the through holes of the projecting portions 12.

Further, since the columns 2a to 2i are joined by welding, the rigidity of the entire pallet is improved as compared with the joining by fitting. As a result, the spans of the insertion ports 5 and 6 can be expanded as much as possible, and both forks of the forklift can be greatly expanded, a stable transport operation of the pallets can be obtained, and the operation of expanding and contracting both forks can be performed. It becomes unnecessary.

The present invention is not limited to the configuration of the above-described embodiment. For example, the extending portion is formed not in an arc shape but in a rectangular shape, and the reinforcing frame portion is formed substantially in an L shape in accordance with the extension. Is also possible.

[0035]

As is apparent from the above description, according to the synthetic resin pallet of the present invention, the upper surface of the upper deck has an area on which the lower deck of another pallet can be placed, so that the pallets can be stacked. Of course, the frame provides easy positioning and stabilizing support for the upper pallet, as well as stabilizing support for the load.

In addition, since the reinforcing frame portion continuously and integrally connected to each frame body is erected at the corner portion of the projecting portion, it is possible to stack pallets perpendicular to the corner portion.
The rigidity at the corner of the frame is increased. As a result,
The durability is improved, and even if a load or the like collides with the end of the frame body, the occurrence of cracks or breakage can be prevented.

Further, according to the second aspect of the present invention, the strength of the corner portion of the protruding portion and particularly the strength of the reinforcing frame portion are improved by the extending portion.

According to the third aspect of the present invention, since the outer peripheral edge of the extension portion is formed in an arc shape, the strength is increased, and even if another pallet hits the extension portion, stress concentration is avoided and breakage or the like is prevented. Is prevented.

According to the fourth aspect of the present invention, since the integrity of the frame and the reinforcing frame is ensured, the effect of reinforcing the frame is improved.

Further, according to the fifth aspect of the present invention, it is possible to quickly drain rainwater and the like on the upper deck upper surface through the through holes.

[Brief description of the drawings]

FIG. 1 is a plan view showing an embodiment of a synthetic resin pallet according to the present invention.

FIG. 2 is a bottom view of the pallet.

FIG. 3 is a view taken in the direction of arrow A in FIG. 1;

FIG. 4 is a view taken in the direction of arrow B in FIG. 1;

FIG. 5 is a sectional view taken along line CC of FIG. 1;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Lower deck 2a-2i ... Column 3 ... Upper deck 4 ... Upper surface 12 ... Projection part 12a ... Extension part 14 ... Frame 14a, 14b ... End part 19 ... Reinforcement frame part C ... Corner part S1, S2 ... Extension line P ... Intersection

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Shizuo Tejima 2-10 Honcho, Naka-ku, Yokohama-shi, Kanagawa Prefecture Inside the Yokohama Daiei Building Palette Co., Ltd. (72) Inventor Masahiro Samejima 2-3-1 Nishishinjuku, Shinjuku-ku, Tokyo Shinjuku Monolith 12th floor Meiji Rubber Chemical Co., Ltd. (72) Inventor Kunihiro Terano 2-3-1 Nishi-Shinjuku, Shinjuku-ku, Tokyo Shinjuku Monolith 12th floor Meiji Rubber Chemical Co., Ltd.

Claims (5)

[Claims] 1. A flat rectangular upper deck is provided above a lower deck via a column, and a projecting portion which enlarges the area of the upper deck upper surface extends horizontally on the upper outer peripheral edge of the upper deck, and A synthetic resin pallet having a frame body erected at an upper end thereof, wherein each of the protruding portions is located at a corner portion of an outer peripheral surface of an adjacent inner peripheral surface of the frame body at an outer side from an intersection where the extension lines are orthogonal to each other. A pallet made of synthetic resin, wherein a reinforcing frame portion continuously and integrally joined to the frame body is provided upright. 2. An extension portion is provided at a corner portion of the protruding portion, the extension portion extending outward from an intersection where an extension line of an inner peripheral surface of each of the adjacent frame bodies at the corner portion is orthogonal,
2. The synthetic resin pallet according to claim 1, wherein said reinforcing frame portion is provided upright on an outer peripheral edge of an upper end of said extension portion. 3. The pallet made of synthetic resin according to claim 2, wherein said extending portion is formed so as to extend in a substantially semicircular shape in a horizontal direction. 4. The reinforcing frame is formed substantially semi-annular,
The synthetic resin pallet according to any one of claims 1 to 3, wherein the height and the thickness and width are set to be substantially the same as those of the frame. 5. The synthetic resin pallet according to claim 1, wherein a through hole for drainage is provided at a base of the frame body from an inner peripheral surface to an outer peripheral surface of the frame body. .