JPS5840039Y2 - Stacked structure of transport boxes - Google Patents

Description

[Detailed description of the invention] The present invention relates to a stacked structure of transport boxes used for transporting bread, etc., which is stable even when large transport boxes are mixed with small transport boxes that are half the size of the large transport boxes in plan view. The purpose is to allow them to be stacked in a stacked state.

For example, there are two types of transportation boxes used for transporting bread, etc.: large ones and small ones, which are the size of a large transportation box reduced in size in the longitudinal direction when viewed from above. In addition, small-sized containers can be stacked only with small-sized ones, and large-sized transport boxes have outwardly projecting ribs formed on the outer periphery of the bottom wall that come into contact with the ribs of the upper opening when stacking. At both longitudinal ends of the outer periphery of the bottom wall, fitting frames that are fitted into the upper opening during stacking are formed in a downwardly protruding shape, and ribs and fitting frames are also formed on the outer periphery of the small transport box. It is formed.

By the way, when only small transport boxes are stacked, the part that is considered as the ground surface is small and unstable, making it easy to topple over. Two can be stacked side by side.

However, conventionally, in the above case, the upper opening of the small transport box is simply fitted into the fitting frame at each longitudinal end of the large transport box, and each small transport box is Since the large transport boxes were not prevented from moving outward in the longitudinal direction, during transportation by truck, etc., the small transport boxes could fall out from between the large transport boxes due to vibrations, etc., and the stacked transport boxes could be damaged. There was a fear that it would collapse.

The present invention has solved the above problem, and its feature is that a large transport box with an open top and a small transport box with an open top and two arranged side by side when viewed from above are stacked together. In this case, a lower rib protrudes outward from the side wall on the four circumferences of the bottom outer circumference of each transport box, and an upper opening of the transport box adjacent on the lower side and located inside the opening edge of the upper opening. A fitting frame that protrudes downward and is fitted into the frame is formed, and the center portions of a pair of opposing sides of the fitting frame of the large transport box, which are parallel to the direction in which the small transport boxes are arranged side by side, are recessed inwardly. The recessed part has a parallel part located in the center and parallel to the part of the opposite side excluding the recessed part, and a parallel part located on both sides and inclined with respect to the parallel part. The opening edge of each transport box is formed with an upper rib that protrudes outward on the four sides of the opening edge, on which the lower knob of the adjacent transport box is placed on the upper side. Among the upper ribs of the box, there are engaging parts located at both ends of the upper rib corresponding to the middle side of the large transport box and fitted into the recessed parts, and engaging parts located on the center side and fitted into the recessed parts. The present invention has a recessed portion recessed downward spanning between the parallel portions.

Hereinafter, one embodiment of the present invention will be described based on the drawings.
In the figures and FIG. 2, 1 is a large transport box, and 2 is a small transport box. Of these, the present invention is applied to the large transport box 1.

The large and small transport boxes 1.2 are made of resin such as polypropylene and have an open top, and are manufactured by injection molding.

The large transport box 1 has a rectangular bottom wall 3 and a pair of large side walls 4 around the four sides.
and small side walls 5 are respectively erected to face each other.

As shown in FIGS. 3 to 5, the bottom wall 3 has side walls 4 and 5 on the outer circumferential side over almost the entire circumference except for the central part of the small side wall 5.
It has a lower lateral rib 6 that protrudes further outward than the lower lateral rib 6, and the long sides of the lower lateral rib 6 are recessed at the center side more inwardly than at both ends.

In addition, on the inner side of the lower horizontal rib 6 of the bottom wall 3, there is a rectangular continuous (not necessarily continuous) fitting frame that also serves as a grounding frame located inside the opening edge 7 of the transport box 1. 8 is formed in a downwardly protruding shape, and this fitting frame 8 is composed of a pair of long side portions 9 and short side portions 10.

The central part of the short side part 10 and the parts of the long side part 9 excluding the ends and the central part are inwardly inclined parts 11 and 12 whose outer surfaces are inwardly protruded and protrude downward. Inwardly inclined portion 11 of side portions 9 and 10
．． The portions other than 12 are vertically protruded downward.

The opposing center portions of each long side portion 9 are recessed inward as a pair of recessed portions 13, and the recessed portions 13 have a parallel portion 14 parallel to the longitudinal direction of the transport box 1 in plan view, and a parallel portion 14 and a pair of oblique parts 15 that connect each end of the long side part 9 to each inwardly inclined part 11 of the long side part 9.

Inside the fitting frame 8, a grounding pattern 16 is formed which connects the inner periphery of the fitting frame 8 in a cross shape, and in addition to this, a large number of non-grounding cores 17 are formed in the vertical, horizontal and diagonal directions.

Upper horizontal ribs 1 projecting outward on the upper edge of each side wall 4, 5
8 and 19 are formed in a circumferential manner, and these upper horizontal ribs 18,
19 and the lower horizontal knob 6 are connected by vertical ribs 20, 21, 22 formed on each side wall 4, 5 and the boundary thereof.

At each end in the longitudinal direction of each large side wall 4, a viewing window 24 having a marker 23 formed therein is formed.

Further, the pair of vertical ribs 21 formed on each small side wall 5 are connected at their vertical midpoints by a midway horizontal rib 25, and a handle opening 26 is formed on the upper side thereof.

When only the large transport boxes 1 as described above are stacked, as shown in FIG. 6, the fitting frame 8 is fitted into the upper opening 27 of the large transport box 1 through a small gap. The upper horizontal ribs 18, 19 and the lower horizontal rib 6 are in contact with each other, and in this case, since the portion of the large transport box 1 that is considered to be the ground surface is large, it may be stacked due to vibration etc. when transported by truck or the like. There is no fear that the large transport box 1 that has been moved will fall over.

On the other hand, the small transport box 2 is also formed into a tapered upper part by erecting a pair of large side walls 29 and small side walls 30 facing each other around the four circumferences of the rectangular bottom wall 28 in a slightly outwardly inclined manner.
The small transport box 2 has a size that is the same as the large transport box 1 in the longitudinal direction when viewed from above, and its height is also approximately the same as the height of the large transport box 1.

The bottom wall 28 is provided with a lower horizontal rib 31 on the outer peripheral side of the small side wall 30 excluding the center side, which protrudes outward from each side wall 29,30.
is formed, and on the inner side of the lower horizontal rib 31 of the bottom wall 28, a rectangular fitting frame 33 that also serves as a grounding frame and located on the inner side of the opening edge 32 of the small transport box 2 is provided with a downwardly protruding shape. is formed.

Although not shown in the drawings, inside the fitting frame 33, grounded and non-grounded cores are formed in the vertical, horizontal, and diagonal directions as in the case of the large transport box 1.

Moreover, an upper horizontal rib 34.35 projecting outward is formed in a circumferential manner at the upper end edge of each side wall 29.30.

The upper horizontal rib 34 formed on the large side wall 29 has a stepped portion 36 at each end in a two-stage stepped shape, and the stepped portion 36 serves as an engaging portion that is fitted into the recessed portion 13. At the same time, there is a recessed portion 37 recessed downward between the stepped portions 36 of the upper horizontal rib 34.
It is said that

Further, each side wall 29.30 is formed with a vertical rib 38.39 connecting the upper horizontal ribs 34, 35 and the lower horizontal rib 31, and the small side wall 30 further has a viewing window with a sign 40 formed inside. 41 is formed.

When only the small transport boxes 2 as described above are stacked, as shown in FIG. 7, the fitting frame 33 is fitted into the upper opening 42 of the small transport boxes 2 through a small gap. The upper horizontal ribs 34, 35 and the lower horizontal rib 31 are in contact with each other.

In addition, when stacking large transport boxes 1 and small transport boxes 2 together, as shown in Figures 1 to 5, small transport boxes 2 are placed between large transport boxes 1 for large transport boxes in plan view. Two boxes 1 are stacked side by side in the longitudinal direction, and the outer lower horizontal ribs 31 of the small transport box 2 are in contact with the upper horizontal ribs 18 and 19 of the large transport box 1. In addition, the small side wall 3 of the small transport box 2 is attached to the lower horizontal rib 6 of the large transport box 1.
The upper horizontal rib 35 formed on the large side wall 29 comes into contact with a part of the stepped portion 36 of the upper horizontal rib 34 formed on the large side wall 29.

In the above case, the upper opening 42 of the small transport box 2
One part of the fitting frame 8 of the large transport box 1 divided into two in the longitudinal direction is fitted through a small gap, and each end of each long side 9 of the fitting frame 8 and a small Due to the contact with the small side wall 30 of the transport box 2, the small transport box 2 is prevented from moving in a direction perpendicular to the longitudinal direction of the large transport box 1 in plan view. Each end and large side wall 29 of the small transport box 2
Due to the contact with the large transport box 1, the small transport box 2 is prevented from moving inward in the longitudinal direction of the large transport box 1 in plan view.

Further, in the large side wall 29 of the small transport box 2 located on the inner side of the bottom wall 3 of the large transport box 1, the recessed portion 37 of the upper horizontal rib 34 formed on the large side wall 29 is connected to the fitting frame 8. The parallel part 14 of the recessed part 13 and the grounding machine 1 formed inside the fitting frame 8
6 and the non-grounded core 17, and each longitudinal end of the large side wall 4 comes into contact with the diagonal part 15 of the recessed part 13, so that the small transport box 2 is The large transport box 1 is prevented from moving outward in the longitudinal direction beyond a predetermined amount.

Furthermore, the stepped portion 36 comes into contact with the parallel portion 14 of the recessed portion 13, so that the small transport box 2 becomes larger than the large transport box 1 in a plan view.
is prevented from moving in a direction perpendicular to the longitudinal direction.

Furthermore, the outer portion of the fitting frame 33 of the small-sized transport box 2 is fitted into the upper opening 27 of the large-sized transport box 1 through a small gap.

As described above, even if two small transport boxes 2 are stacked in parallel in the longitudinal direction of the large transport boxes 1 in plan view, the space between the large transport boxes 1 and the small transport boxes 2 is Since the large and small transport boxes 1 and 2 are prevented from falling off, there is no risk that the stacked large and small transport boxes 1 and 2 will collapse due to vibrations or the like when transported by truck or the like.

In addition, in the example, the recessed portions were formed in a pair of opposing portions located at the center of each long side of the fitting frame in the large transport box, but the recessed portions were formed at the center of each short side of the fitting frame. A recess is formed in a pair of opposing parts, and two small transport boxes are arranged between the large transport boxes in a direction perpendicular to the longitudinal direction of the large transport box in plan view. They may be stacked together with transportation boxes.

As described in detail above, according to the present invention, the transport boxes can be stacked in a stable state, and there is no fear that the transport boxes will collapse due to vibrations or the like during transport by racks or the like.

In particular, in the present invention, the engaging portions on each end side of the upper rib 34 of the small-sized transport box 2 are located on the opposite sides 9 of the fitting frame 8 of the large-sized transport box 1 that are parallel to the direction in which the small-sized transport boxes 2 are arranged side by side. 36 is inserted into the recessed part 13 in the center of the opposite side 9, parallel parts 14 located in the center and parallel to the part of the opposite side 9 excluding the recessed part 13, and parallel parts 14 located on both sides. Since it is composed of a pair of diagonal parts 15 that are inclined with respect to the parallel part 14, when the large transport box 1 is stacked on two small transport boxes 2 arranged in parallel in plan view, the diagonal part 15 connects the engaging portion 36 to the recessed portion 1
Therefore, it is easy to fit the engaging part 36 into the recessed part 13, and thereby the length of the parallel part 14 of the recessed part 13 can be made small. Oblique section 1
5 and the retaining part 36 in the direction in which the small transport boxes 2 are arranged side by side, when the transport boxes 1 and 2 are stacked, there is no play between the transport boxes 1 and 2 in the direction in which the small transport boxes 2 are arranged side by side. can be made smaller.

In addition, both oblique portions 15 of the recessed portion 13 reduce the strength in the longitudinal direction of the opposite side 9 on the center side of the opposite side 9 where the recessed portion 13 is formed in the fitting frame 8 of the large transport box 1. and can be increased both in the width direction.

Furthermore, since the corner formed by the parallel portion 14 and the diagonal portion 15 and the corner formed by the diagonal portion 15 and the portion of the opposite side portion 9 excluding the recessed portion 13 are obtuse angles, , these corners are not easily scratched.

The present invention has the above-mentioned advantages, and its structure is simple and can be implemented at low cost.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and FIG. 1 is a perspective view showing a state in which a large transport box and a small transport box are stacked together, and FIG.
The figure is a partially cutaway perspective view showing a small transport box fitted to the bottom wall of a large transport box, Figure 3 is a partial sectional view of the main part of Figure 2, and Figures 4 and 5 are Fig. 3 is a cross-sectional view taken along lines A-A and B-B, Fig. 6 is a partial cross-sectional front view showing stacked large transport boxes, and Fig. 7 is a partial cross-section showing stacked small transport boxes. It is a front view. 1...Large transport box, 2...Small transport box, 3, 28...Bottom wall, 4.5.29.30...
...Side wall, 6,31...Lower horizontal rib, 7゜32...Opening edge, 8,33...Mating frame, 9...・Long side part, 10...Short side part, 1
3... Concave part, 14... Parallel part, 15
...Diagonal section, 16... Earthing machine, 17.
...Non-grounded machine.

Claims (1)

[Scope of utility model registration request] In a stack of a large transport box 1 with an open top and two small transport boxes 2 with an open top and arranged side by side in plan view, on the four peripheries of the outer periphery of the bottom of each transport box 1, 2, a lower rib 6.31 protruding outward from the side walls 4, 5, 29.30; a transport box 1 located inside the opening edges 7, 32 of the upper opening 27.42 and adjacent on the lower side; 2, and a pair of fitting frames 8 and 33 protruding downward that are fitted into the upper openings 27 and 42 of the large carrying box 1, and a pair of fitting frames 8 and 33 that are parallel to the juxtaposition direction of the small carrying boxes 2 in the fitting frame 8 of the large carrying box 1. The central part of the opposing side 9 is a recessed part 13 that is recessed inward, and the recessed part 13 is located in the center and parallel to the part of the opposite side 9 excluding the recessed part 13. It consists of a parallel part 14 and a pair of oblique parts 15 that are located on both sides and are inclined with respect to the parallel part 14. Upper ribs 18, 19, 34.35 protrude outward on which the lower ribs 6.31 of the adjacent transport boxes 1, 2 are placed, and among the upper ribs 34, 35 of the small transport box 1, the larger The upper rib 34 corresponding to the center side of the transport box 1 has engaging parts 36 located at both ends and fitted into the recessed parts 13, and parallel parts of the both recessed step parts 13 located at the center side. A stacked structure of transport boxes characterized by comprising a concave part 37 recessed downward spanning 14 spaces.