JP7194959B2 - shipping container - Google Patents

Description

The present invention relates to a transport container that can be placed in a so-called stacking state.

2. Description of the Related Art Conventionally, there is known a container for transportation that can be placed in a so-called stacking state in which an upper container is stacked on a lower container. (See Patent Document 1, for example).

Utility Model Registration No. 2573268

The shipping containers require dimensional tolerances in molding and clearance between the upper shipping container and the lower shipping container in the stacking state. In such transportation containers, when old transportation containers and new transportation containers are mixed, the old transportation containers often shrink and become smaller in size due to changes over time. When the number of .times..times..times..times..times..times..times..times..times.

However, if the clearance is simply reduced, there is a problem that it becomes difficult to stack the upper transport container on the lower transport container.

The present invention has been made in view of the above-mentioned conventional problems. To provide a safe transporting container which is restrained so as not to fall down easily.

The invention according to claim 1 is a transportation container having a bottom wall and side walls protruding upward from the outer peripheral portion of the bottom wall, and having an accommodating space inside which opens upward. The side wall has an upper protrusion that protrudes upward from a part of the upper end surface, and a lower recess that is recessed upward at a position corresponding to the upper protrusion in a plan view of the lower end surface and into which the upper protrusion can be inserted. have. The side wall includes a lower protrusion that protrudes downward in a part of the lower recess, and an upper recess that is recessed downward at a position corresponding to the lower protrusion in plan view of the upper protrusion and into which the lower protrusion can be inserted. and have

The invention according to claim 2 is the invention according to claim 1, wherein the first clearance formed between the inner surface of the lower recess and the outer surface of the upper protrusion in plan view is equal to the inner surface of the upper recess. and the outer surface of the lower protrusion.

The invention according to claim 3 is the invention according to claim 1 or 2, wherein the upper protrusions are arranged at both end portions in the circumferential direction along the outer peripheral portion of the bottom wall so as to become lower as it goes from the center side to the edge side. It has a guide surface that is inclined so that

The invention according to claim 4 is the invention according to any one of claims 1 to 3, wherein the upper protrusion is provided on both sides adjacent to the upper recess in the circumferential direction along the outer peripheral portion of the bottom wall. The area has a guide surface that slopes downward as it approaches the upper recess.

In the invention according to claim 1, it is easy to stack the upper transportation container on the lower transportation container, and since the stacked transportation containers are prevented from being displaced in the horizontal direction, they are less likely to fall over. Be safe.

In the invention according to claim 2, displacement of the stacked transportation containers in the horizontal direction is further suppressed.

In the invention according to claim 3, when stacking the upper transporting container on the lower transporting container, the lower concave portion is easily engaged with the upper protrusion.

In the invention according to claim 4, when stacking the upper transporting container on the lower transporting container, the lower projecting portion is easily engaged with the upper recessed portion.

FIG. 1A is a perspective view of the transportation container according to the first embodiment of the present disclosure, viewed obliquely from above; FIG. FIG. 1B is a partially enlarged view of FIG. 1A. FIG. 2 is a plan view of the bottom wall of the transportation container of the same. FIG. 3A is a front view of a first side wall of the same transportation container; FIG. 3B is a perspective view of the main part including the first side wall of the transportation container as seen from obliquely below. FIG. 4A is a front view of a second side wall of the same transportation container; FIG. 4B is a perspective view of the main part including the second side wall of the transportation container as viewed obliquely from below. FIG. 5A is a perspective view of a portion of the transportation container provided with an upper concave portion, viewed obliquely from above. FIG. 5B is a perspective view of a portion of the transportation container provided with a lower projection as viewed obliquely from below. FIG. 6 is an explanatory view showing the positional relationship between the upper protrusion of the lower transport container and the lower recess of the upper transport container in the stacking state of the same transport container. FIG. 7 is a side view of a state in which 20 tiers of transportation containers are stacked. FIG. 8 is an explanatory view showing the positional relationship between the upper concave portion of the lower transporting container and the lower protruding portion of the upper transporting container in the stacking state of the same transporting container. FIG. 9 is a perspective view of the transportation container according to the second embodiment of the present disclosure, viewed obliquely from above. FIG. 10A is a perspective view of the portion of the transportation container provided with the upper concave portion, viewed obliquely from above. FIG. 10B is a perspective view of the portion of the transportation container provided with the lower protrusion as seen from obliquely below. FIG. 11 is a perspective view of a transportation container according to a third embodiment of the present disclosure, viewed obliquely from above. FIG. 12A is a perspective view of the portion of the transportation container provided with the upper concave portion, viewed obliquely from above. FIG. 12B is a perspective view of the portion of the transportation container provided with the lower projection as viewed obliquely from below. FIG. 13A is a perspective view of a portion provided with an upper recessed portion of a transporting container according to another example of the third embodiment, viewed obliquely from above. FIG. 13B is a perspective view of a portion of the transportation container provided with a lower protrusion as seen from obliquely below.

TECHNICAL FIELD The present disclosure relates to shipping containers and, more particularly, to shipping containers that are stackable.

A first embodiment of a transportation container according to the present disclosure will be described below with reference to FIGS. 1 to 8. FIG.

The transporting container 1 is configured to allow so-called stacking, in which the upper transporting container 1 is stacked on the lower transporting container 1 .

As shown in FIG. 1A, the transport container 1 includes a bottom wall 11 and side walls 12 and has a storage space 10 that opens upward. The transportation container 1 is integrally molded from resin. In the following description, with respect to top and bottom, the side of the transport container 1 where the storage space 10 is open is defined as the top, and the opposite side is defined as the bottom. Further, the side away from the center of the transportation container 1 is defined as the outer side, and the side closer to the center is defined as the inner side.

As shown in FIG. 2, the bottom wall 11 has a rectangular shape in plan view with long sides of about 100 to 120 cm and short sides of about 40 to 60 cm. The bottom wall 11 is formed like a mesh. That is, as shown in FIG. 1B, the bottom wall 11 includes a plurality of first bottom ribs 111 extending parallel to the long sides and arranged in the short side direction, and a plurality of first bottom ribs 111 extending parallel to the short sides and arranged in the long side direction. and a plurality of second bottom ribs 112 provided. Each first bottom rib 111 crosses each second bottom rib 112, and the first bottom ribs 111 and the second bottom ribs 112 form a grid. The top surface of the bottom wall 11 is located on the same plane, and the bottom surface of the bottom wall 11 is also located on the same plane below the top surface. Between the adjacent first bottom ribs 111 and between the adjacent second bottom ribs 112 are penetrated vertically, respectively, and the bottom wall 11 has air permeability.

The side wall 12 protrudes upward from the outer peripheral portion of the bottom wall 11 . That is, a pair of rectangular first side walls 121 shown in FIG. 3A protrude upward from a pair of long side portions of the bottom wall 11 . A pair of rectangular second side walls 122 shown in FIG. 4A protrude upward from the pair of short sides of the bottom wall 11 . The length of the first side wall 121 in the horizontal direction (long side direction of the bottom wall 11 ) is substantially the same as the length of the long side of the bottom wall 11 . The length of the second side wall 122 in the horizontal direction (the direction of the short side of the bottom wall 11 ) is substantially the same as the length of the short side of the bottom wall 11 . The side wall 12 protrudes upward from the entire length of the outer peripheral portion of the bottom wall 11 and continues in a direction along the outer peripheral portion of the bottom wall 11 (hereinafter referred to as a circumferential direction). The height (vertical length) of the first side wall 121 and the second side wall 122 is about 10 to 20 cm.

In addition, the side wall 12 also protrudes downward from the outer peripheral portion of the bottom wall 11 in the first embodiment. That is, the bottom wall 11 is connected to the upper and lower intermediate portions of the side walls 12 .

As shown in FIG. 1B, the side wall 12 has a plurality of side vertical pieces 2 extending vertically and arranged side by side in the circumferential direction. The side vertical piece 2 is in the form of a flat plate having a width (length in the inside and outside direction) of about 1 to 3 cm and a thickness (length in the circumferential direction) of about 1 to 3 mm. An upper frame portion 3 extending in the circumferential direction is formed at the upper end portion of the side vertical piece 2 .

The upper frame portion 3 has a first upper horizontal piece 31 with a width (length in the inside and outside direction) of about 1 to 3 cm. The first upper horizontal piece 31 has a flat plate shape with a thickness (vertical length) of about 1 to 3 mm. The first upper horizontal piece 31 is continuous in the circumferential direction and has an annular shape in plan view.

Furthermore, the upper frame portion 3 has a second upper horizontal piece 32 positioned below the first upper horizontal piece 31 . The width and thickness of the second upper horizontal piece 32 are the same as those of the first upper horizontal piece 31, and like the first upper horizontal piece 31, the second upper horizontal piece 32 is continuous in the circumferential direction and forms an annular shape. there is The first upper horizontal piece 31 and the second upper horizontal piece 32 are connected by a plurality of connecting pieces 33 spaced apart in the circumferential direction. The upper frame portion 3 is configured by the first upper horizontal piece 31 , the second upper horizontal piece 32 and the connecting piece 33 .

A lower frame portion 4 extending in the circumferential direction is formed at the lower end portion of the side vertical piece 2 . The lower frame portion 4 has a lower horizontal piece 41 with a width (length in the inside and outside direction) of about 1 to 3 cm. The lower horizontal piece 41 has a flat plate shape with a thickness (vertical length) of about 1 to 3 mm. The lower horizontal piece 41 is continuous in the circumferential direction and has an annular shape.

As shown in FIG. 5B , a lower outer vertical piece 42 protrudes downward from the outer end of the lower horizontal piece 41 . The lower outer vertical piece 42 has a width (length in the vertical direction) of about 1 to 3 cm and a thickness (length in the inner and outer directions) of about 1 to 3 mm. The lower outer vertical piece 42 is continuous in the circumferential direction and has an annular shape.

A lower inner vertical piece 43 protrudes downward from the inner end of the lower horizontal piece 41 . The width and thickness of the lower inner vertical piece 43 are the same as those of the lower outer vertical piece 42, and the lower inner vertical piece 43, like the lower outer vertical piece 42, is continuous in the circumferential direction and has an annular shape.

The lower horizontal piece 41 , the lower outer vertical piece 42 and the lower inner vertical piece 43 constitute the lower frame portion 4 . A side wall 12 is composed of the side vertical piece 2 , the upper frame portion 3 and the lower frame portion 4 . Between the upper frame portion 3 and the lower frame portion 4 of the side wall 12 and between the adjacent side vertical pieces 2 are respectively penetrated inside and outside, and the side wall 12 has air permeability.

Further, the transportation container 1 is provided with a partition wall 13 that partitions the storage space 10, as shown in FIG. 1B. The partition walls 13 are located at positions separated by about 1/3 of the length of the long side of the bottom wall 11 toward the center from both ends in the long side direction of the bottom wall 11 (hereinafter referred to as partition positions). is arranged along the short side direction of the The partition wall 13 has a thickness (long side direction of the bottom wall 11) of about 1 to 3 cm and a height (vertical length) of about 10 to 20 cm. be.

The partition wall 13 has a plurality of vertical partition pieces 132 protruding upward from the bottom wall 11 and upper horizontal partition pieces 131 formed at upper ends of the vertical partition pieces 132 . The plurality of vertical partition pieces 132 are arranged at intervals in the short-side direction at each partition position. The partition upper horizontal piece 131 extends in the short side direction at each partition position, and the end portion thereof is continuous with the side wall 12 . The partition wall 13 is integrally molded with resin together with the bottom wall 11 and the side walls 12 to form the transportation container 1 . Between the bottom wall 11 and the upper horizontal partition piece 131 and between the adjacent vertical partition pieces 132 are penetrated in the longitudinal direction, respectively, and the partition wall 13 has air permeability.

The transporting container 1 is provided on the upper surfaces of the first upper horizontal piece 31 and the second upper horizontal piece 32 that serve as the upper end surfaces of the side walls 12 of the lower transporting container 1 , and the lower end surfaces of the side walls 12 of the upper transporting container 1 . The lower surfaces of the lower outer vertical piece 42 and the lower inner vertical piece 43 are placed and supported to be in a stacking state. In order to maintain the stacking condition, i.e. to prevent the upper shipping container 1 from moving horizontally relative to the lower shipping container 1 and out of position, the shipping container 1 is placed on top. A protrusion 5 and a lower recess 6 are provided. The upper protrusion 5 protrudes upward from a portion of the upper end surface of the side wall 12 . The lower recessed portion 6 is recessed upward at a position corresponding to the upper protrusion 5 in plan view of the lower end surface of the side wall 12 , and the upper protrusion 5 is inserted so that the lower recessed portion 6 can engage with the upper protrusion 5 . be.

Specifically, in the first embodiment, as shown in FIGS. 1A and 2 , a part of each side in the circumferential direction of the upper end surface of the upper frame portion 3 is provided with another portion of the upper end surface of the upper frame portion 3 . An upper projection 5 projecting upward from the portion is formed. A portion of the upper end surface of the upper frame portion 3 where the upper protrusion 5 is not formed is positioned on the same plane, and the upper protrusion 5 protrudes above the same plane.

More specifically, on the first side wall 121, a total length of about 60 to 80 cm, which is about 30 to 40 cm on both sides from the center in the long side direction, is provided with the entire length of the upper end surface of the upper frame portion 3 in the short side direction. A first upper projecting portion 51 is formed extending over. In addition, on the second side wall 122, in a region with a total length of about 30 to 50 cm from the center in the short side direction to about 15 to 20 cm on both sides, a second wall extending over the entire length in the long side direction of the upper end surface of the upper frame portion 3 is provided. 2 upper projections 52 are formed. The upper protrusion 5 is composed of the first upper protrusion 51 and the second upper protrusion 52 . The upper protrusion 5 is formed by bending the first upper horizontal piece 31 upward. The projection height of the upper projection 5 upward from the portion where the upper projection 5 of the upper end surface of the upper frame portion 3 is not formed is about 1 to 5 cm.

In addition, as shown in FIG. 1B, the upper projection 5 has guide surfaces 53 at both ends in the circumferential direction, which are inclined so as to become lower from the center side to the edge side. Specifically, the guide surface 53 is a flat surface that slopes downward from the center side in the circumferential direction toward the edge side in the circumferential direction. As shown in FIGS. 3A and 3B, the upper protrusion 5 is formed in a trapezoidal shape when viewed from the front.

Next, the lower concave portion 6 will be described. As shown in FIG. 5B, a downwardly open space is formed surrounded by the lower horizontal piece 41, the lower outer vertical piece 42, and the lower inner vertical piece 43 that constitute the lower frame portion 4. As shown in FIG. As shown in FIG. 3B, lower ribs 44 are formed on both sides of the region corresponding to the upper protrusion 5 in the circumferential direction in this space. The lower rib 44 protrudes downward from the lower horizontal piece 41 over the entire length between the lower outer vertical piece 42 and the lower inner vertical piece 43 .

A space that is open downward surrounded by the lower horizontal piece 41, the lower outer vertical piece 42, the lower inner vertical piece 43, and the lower ribs 44 positioned on both sides in the circumferential direction extends above the lower end surface of the lower frame portion 4. A recessed lower recess 6 is formed. In addition, the lower end surface of the lower frame portion 4, that is, the lower end surfaces of the lower outer vertical piece 42 and the lower inner vertical piece 43 are positioned on the same plane, and the depth is about 1 to 5 cm above the same plane. The lower recess 6 is recessed to a height equal to or slightly deeper than the protrusion height of the upper protrusion 5 .

More specifically, on the first side wall 121, the first upper projection 51 has a first upper protrusion 51 in a region of about 30 to 40 cm on both sides from the center in the long-side direction, with a total length of about 60 to 80 cm. A first lower recess 61 that engages with the protrusion 51 is formed. Further, as shown in FIG. 4B, the second side wall 122 has a region corresponding to the second upper protrusion 52 and having a total length of about 30 to 50 cm from the center in the short side direction to about 15 to 20 cm on both sides. , a second lower recess 62 that engages with the second upper protrusion 52 is formed. A lower recessed portion 6 is configured by the first lower recessed portion 61 and the second lower recessed portion 62 .

Furthermore, in the transportation container 1 of the first embodiment, the side wall 12 has an upper concave portion 8 shown in FIG. 5A and a lower protrusion 7 shown in FIG. 5B. The lower protrusion 7 protrudes downward from a portion of the lower recess 6 in the circumferential direction. More specifically, the first side wall 121 has a lower horizontal piece extending inwardly from the lower outer vertical piece 42 to an intermediate portion between the lower outer vertical piece 42 and the lower inner vertical piece 43 at the center in the long side direction. A first lower protrusion 71 made of a rib protruding downward from 41 is formed.

4B, the second side wall 122 extends inward from the lower outer vertical piece 42 to the intermediate portion between the lower outer vertical piece 42 and the lower inner vertical piece 43, and , a second lower projecting portion 72 consisting of a rib projecting downward from the lower horizontal piece 41 is formed. The lower protrusion 7 is composed of the first lower protrusion 71 and the second lower protrusion 72 .

As shown in FIG. 5B, the thickness (length in the circumferential direction) of the first lower protrusion 71 and the second lower protrusion 72 is about 1 to 2 mm, and the width (length in the inner and outer directions) is about 2 to 4 mm. The vertical length is about 1 to 3 cm, which is the same as the vertical length of the lower outer vertical piece 42 .

In addition, the lower projection 7 has a guide surface 73 at its lower and inner end, which slopes upward toward the inside.

As shown in FIGS. 5A, 3A, and 3B, the upper recess 8 is recessed downward at a position corresponding to the lower protrusion 7 of the upper projection 5 in the circumferential direction. A lower protrusion 7 is inserted into the upper recess 8 so that the lower protrusion 7 can be engaged with the upper recess 8 . More specifically, in the central portion of the first side wall 121 in the longitudinal direction, an area extending from the outer edge of the first upper horizontal piece 31 to the intermediate portion between the outer edge and the inner edge is recessed downward and upward and downward. A first upper concave portion 81 that opens outward is formed. Also, as shown in FIGS. 4A and 4B, a region extending from the outer edge of the first upper horizontal piece 31 to the intermediate portion between the outer edge and the inner edge is formed in the central portion of the second side wall 122 in the short side direction. , a second upper recess 82 similar to the first upper recess 81 is formed, which is recessed downward and opened upward and outward.

The circumferential length of the first upper recess 81 and the second upper recess 82 is approximately 3 to 4 mm, and the width (the length in the inner and outer directions) is approximately 3 to 5 mm. Further, the depth of the first upper recess 81 and the second upper recess 82 downward from the portion where the first upper recess 81 and the second upper recess 82 of the upper end surface of the upper protrusion 5 are not formed is 1 to 3 cm. It is approximately the same as the vertical length of the lower projection 7, but it may be slightly deeper or slightly shallower than the vertical length of the lower projection 7.

As shown in FIG. 5A , the upper projection 5 has guide surfaces 54 on both sides adjacent to the upper recess 8 in the circumferential direction, the guide surfaces 54 sloping downward toward the upper recess 8 . Specifically, the guide surface 54 is a flat surface that slopes downward from the edge side in the circumferential direction toward the center side in the circumferential direction.

The transportation container 1 described above is formed point-symmetrically and line-symmetrically about a center line parallel to the long side and a center line parallel to the short side in plan view.

Next, the stacking of the transportation containers 1 described above will be described. Stacking is performed by placing the lower frame portion 4 of the upper transporting container 1 on the upper frame portion 3 of the lower transporting container 1 .

First, the operator engages the first upper protrusion 51 of the lower transporting container 1 with the first lower concave portion 61 of the upper transporting container 1 to engage the second upper protrusion of the lower transporting container 1 . The upper transporting container 1 is placed on the lower transporting container 1 such that the second lower recess 62 of the upper transporting container 1 engages the portion 52 . At this time, since the upper projecting portion 5 has guide surfaces 53 at both ends in the circumferential direction, the upper projecting portion 5 of the lower transporting container 1 is inserted into the lower recessed portion 6 of the upper transporting container 1. Cheap.

The transportation container 1 is formed such that a first clearance 14 is formed between the inner surface of the lower concave portion 6 and the outer surface of the upper protrusion 5 in plan view. Therefore, as shown in FIG. 6, in the stacking state, there is a first clearance between the inner surface of the lower concave portion 6 of the upper transporting container 1 and the outer surface of the upper protrusion 5 of the lower transporting container 1. 14 are formed. The first clearance 14 includes a clearance 141 between the lower inner vertical piece 43 and the upper protrusion 5, a clearance 142 between the lower outer vertical piece 42 and the upper protrusion 5, and a lower rib 44 and the upper protrusion. 5 and a clearance 144 between the other lower rib 44 and the upper protrusion 5 . In the first embodiment, the first clearance 14 between the first upper protrusion 51 and the first lower recess 61 is about 3 mm for the clearances 141 and 142 and about 4 mm for the clearances 143 and 144 .

As for the first clearance 14 between the second upper protrusion 52 and the second lower recess 62, the clearances 141 and 142 are approximately 4 mm, and the clearances 143 and 144 are approximately 3 mm.

Since the upper protrusion 5 can be positioned at any position within the lower recess 6, the positional relationship between the upper transport container 1 and the lower transport container 1 in the stacking state is not determined. Since each clearance 141 to 144 is 4 mm with only the upper projection 5 and the lower recess 6, the upper transportation container 1 has a total of 8 mm in the long side direction and 8 mm in the short side direction with respect to the lower transportation container 1. There will be a total of 8mm clearance.

In this case, as shown in FIG. 7, for example, when the transporting container 1 is stacked in 20 stages with a shift of 4 mm in the same direction from the transporting container 1 directly below, the uppermost transporting container 1 will result in a displacement 19 of about 8 cm with respect to the bottom transport container 1 . In this respect, the provision of the upper concave portion 8 and the lower protrusion 7 can suppress the displacement of the uppermost transporting container 1 with respect to the lowermost transporting container 1 in the stacking state.

The transportation container 1 is formed such that a second clearance 15 is formed between the inner surface of the upper concave portion 8 and the outer surface of the lower projection portion 7 in plan view. Therefore, as shown in FIG. 8, in the stacking state, there is a second clearance between the outer surface of the lower projecting portion 7 of the upper transporting container 1 and the inner surface of the upper recessed portion 8 of the lower transporting container 1. 15 are formed. The second clearance 15 includes a clearance 151 between one inner surface of the upper recess 8 in the circumferential direction and the lower projection 7, and a clearance 152 between the other inner surface of the upper recess 8 in the circumferential direction and the lower projection 7. , and a clearance 153 between the inner surface of the inner side of the upper recess 8 and the lower protrusion 7 . In the first embodiment, regarding the second clearance 15 between the first lower protrusion 71 and the first upper recess 81, the clearances 151 and 152 are 1 mm smaller than the clearances 141 to 144. 153 is approximately 3 mm.

As for the second clearance 15 between the second lower protrusion 72 and the second upper recess 82, the clearances 151 and 152 are approximately 1 mm, and the clearance 153 is approximately 4 mm.

That is, at least the clearances 151 and 152 between the inner surface of the upper concave portion 8 in the circumferential direction and the lower protrusion 7 in the second clearance 15 are smaller than the first clearance 14 .

That is, for the first side wall 121, clearances 151, 152 (approximately 1 mm)<clearances 141, 142 (approximately 3 mm)<clearances 143, 144 (approximately 4 mm).

Further, for the second side wall 122, clearances 151, 152 (about 1 mm)<clearances 143, 144 (about 3 mm)<clearances 141, 142 (about 4 mm).

In this case, for example, even if the transporting container 1 is stacked 20 tiers with a deviation of 1 mm in the same direction from the transporting container 1 directly below, the bottom transporting container 1 of the uppermost transporting container 1 in plan view A deviation from 1 is only about 2 cm.

Also, after the worker engages the lower recessed portion 6 of the upper transporting container 1 with the upper protrusion 5 of the lower transporting container 1, the operator engages the upper recessed portion 8 of the lower transporting container 1 with the upper recessed portion. The lower protrusion 7 of the transportation container 1 is inserted to engage the lower protrusion 7 with the upper recess 8 . At this time, since the upper protrusion 5 has guide surfaces 54 on both sides adjacent to the upper recess 8 , the lower protrusion 7 of the upper transporting container 1 is positioned above the lower transporting container 1 . It is easily inserted into the recess 8 .

In the above-described transporting container 1, even if the number of stacked transporting containers 1 increases in the stacking state, the horizontal positional deviation of the uppermost transporting container 1 with respect to the lowermost transporting container 1 does not occur. is suppressed. In particular, since the lower protrusion 7 and the upper recess 8 are formed on both the first side wall 121 on the long side and the second side wall 122 on the short side, respectively, the transportation container can be adjusted in both the long side direction and the short side direction. 1 is suppressed.

Also, since the height of the partition wall 13 is the same as the height of the side wall 12, the bottom wall 11 of the upper transport container 1 is placed on the partition wall 13 of the lower transport container 1 in the stacking state. , the bending of the bottom wall 11 of the upper transport container 1 is suppressed.

Next, a transportation container 1 according to a second embodiment will be described with reference to FIGS. 9, 10A and 10B. Since the second embodiment is mostly the same as the first embodiment, description of the same parts will be omitted, and mainly different parts will be described.

In the second embodiment, as shown in FIG. 9, a handle 16 is formed at the upper end of the partition wall 13 . The handle 16 protrudes upward from a portion of the partition wall 13 where the handle 16 is not formed. A recess 161 into which the handle 16 of the lower transport container 1 is inserted in the stacking state is formed in the lower end of the partition wall 13 .

In the second embodiment, as shown in FIG. 10A , the center portion of the side wall 12 is recessed downward from the outer edge to the inner edge of the upper frame portion 3 to open upward, inward and outward. A recess 8 is formed. In the first embodiment, the upper recessed portion 8 is formed in a region from the outer edge of the upper frame portion 3 to the intermediate portion between the outer edge and the inner edge, and is recessed downward and opened upward and outward. , was not open to the inside.

Further, in the second embodiment, as shown in FIG. 10B , a lower projection made of a rib that protrudes downward from the lower horizontal piece 41 from the lower outer vertical piece 42 to the lower inner vertical piece 43 in the central portion of the side wall 12. 7 is formed. In the first embodiment, the lower projecting portion 7 consists of ribs only from the lower outer vertical piece 42 to the intermediate portion between the lower external vertical piece 42 and the lower internal vertical piece 43 in the central portion of the side wall 12 . was formed.

As a result, the lower projecting portion 7 of the lower transporting container 1 can be easily inserted into the upper recessed portion 8 of the upper transporting container 1 .

Next, a transportation container 1 according to a third embodiment will be described with reference to FIGS. 11, 12A and 12B. Since the third embodiment is mostly the same as the second embodiment, the description of the same parts will be omitted, and mainly the different parts will be described.

In the third embodiment, as shown in FIG. 12A, in the center of the side wall 12, from the outer edge to the inner edge of the upper frame part 3, there is an upper recess that is recessed downward and opens upward, downward, and outward. 8 is formed. More specifically, a notch is formed from the outer edge to the inner edge of the first upper horizontal piece 31 to form the upper concave portion 8 .

In addition, in the third embodiment, as shown in FIG. 12B, the lower projection 7 extends from the lower outer vertical piece 42 to the intermediate portion between the lower outer vertical piece 42 and the lower inner vertical piece 43 in the central portion of the side wall 12. A lower projection 7 made of a rib extending inward and projecting downward from the lower horizontal piece 41 is formed.

Thus, the upper concave portion 8 is formed simply by forming a notch in the first upper horizontal piece 31, and the upper concave portion 8 is easily formed.

Another example of the third embodiment is shown in FIGS. 13A and 13B. In this another example, as shown in FIG. 13A , an upper concave portion 8 is provided in the central portion of the side wall 12 from the inner edge to the outer edge of the upper frame portion 3 so as to be concave downward and open upward, downward, and inward. is formed. More specifically, a notch is formed from the inner edge to the outer edge of the first upper horizontal piece 31 to form the upper concave portion 8 .

In this example, as shown in FIG. 13B , the lower protrusion 7 is formed in the central portion of the side wall 12 from the lower inner vertical piece 43 to the intermediate portion between the lower inner vertical piece 43 and the lower outer vertical piece 42 . A lower projecting portion 7 consisting of a rib extending in the direction of the lower lateral piece 41 and protruding downward from the lower lateral piece 41 is formed.

Thus, the upper concave portion 8 is formed simply by forming a notch in the first upper horizontal piece 31, and the upper concave portion 8 is easily formed.

Next, modified examples of the transport container 1 of the present disclosure will be described.

The present disclosure is particularly effective when the transport container 1 is made of a thermoplastic synthetic resin such as polypropylene or polyethylene. may Further, the transportation container 1 may be integrally formed by fitting, bonding, welding, or the like after the bottom wall 11 and the side wall 12 are formed separately, instead of being integrally formed of resin.

In the first embodiment, the bottom wall 11 has a rectangular shape in plan view, but the shape in plan view is not limited to a rectangle, and may be a square or any other shape. Moreover, the size of the bottom wall 11 in plan view, the thickness of the resin forming the bottom wall 11, and the like are not limited. Moreover, the upper surface and the lower surface of the bottom wall 11 do not have to be positioned on the same plane. Also, the bottom wall 11 may be formed of a plate-like member that is impermeable to air, instead of being formed in a mesh shape.

The bottom wall 11 is connected to the upper and lower intermediate portions of the side wall 12 in the first embodiment, but may be connected to the lower end portion of the side wall 12 .

In the first embodiment, the side wall 12 has a rectangular shape when viewed from the front, but the shape when viewed from the front is not limited to a rectangular shape, and may be a square or other shape. In addition, the size of the side wall 12 when viewed from the front, the thickness of the resin forming the side wall 12, and the like are not limited. Moreover, the side wall 12 may be formed of a non-ventilating plate-like member instead of having a plurality of lateral longitudinal ribs. Moreover, the side walls 12 may not be completely continuous in the circumferential direction.

The width and thickness of the side vertical piece 2 are not limited.

The width and thickness of the first upper horizontal piece 31 and the second upper horizontal piece 32 are not limited. Also, the first upper horizontal piece 31 and the second upper horizontal piece 32 may not be completely continuous in the circumferential direction.

The upper frame portion 3 is not limited to being configured by the first upper horizontal piece 31 , the second upper horizontal piece 32 and the connecting piece 33 .

The width and thickness of the lower horizontal piece 41 are not limited. Also, the lower horizontal piece 41 may not be completely continuous in the circumferential direction.

The width and thickness of the lower outer vertical piece 42 and the lower inner vertical piece 43 are not limited. Also, the lower outer vertical piece 42 and the lower inner vertical piece 43 may not be completely continuous in the circumferential direction.

The lower frame portion 4 is not limited to being configured by the lower horizontal piece 41 , the lower outer vertical piece 42 and the lower inner vertical piece 43 .

The side walls 12 are not limited to those composed of the side vertical pieces 2 , the upper frame portion 3 and the lower frame portion 4 .

The partition wall 13 is not limited to being formed by the vertical partition piece 132 and the upper horizontal piece 131 of the partition, and may be formed by a plate-like member that is impermeable to air. The thickness and height of the partition wall 13 are not limited. Further, a hole penetrating the partition wall 13 may be formed in the lower portion of the partition wall 13, and in this case, the ventilation of the partition wall 13 is improved. Moreover, the partition wall 13 may not be provided in the transportation container 1 .

The upper protrusion 5 is not limited to being formed by bending the first upper horizontal piece 31 upward. The upper protrusion 5 may not have the guide surface 53 at the end in the circumferential direction. The protrusion height, circumferential length and width of the upper protrusion 5 are not limited. The position where the upper protrusion 5 is provided on the upper end surface of the side wall 12 is not limited.

The depth, circumferential length and width of the lower recess 6 are not limited. The position where the lower concave portion 6 is provided on the lower end surface of the side wall 12 is not limited.

The lower projecting portion 7 is not limited to a rib. The vertical length, circumferential length and width of the lower protrusion 7 are not limited. The position of the lower protrusion 7 in the lower recess 6 is not limited.

The guide surface 73 may be formed with a rounded curved surface (so-called R shape). Further, the lower projecting portion 7 does not have to have the guide surface 73 that is inclined so as to become higher toward the inner side.

The vertical length, circumferential length and width of the upper concave portion 8 are not limited. The position of the upper recess 8 in the upper protrusion 5 is not limited.

The upper protrusion 5 does not have to have the guide surfaces 54 on both sides adjacent to the upper recess 8 .

The transportation container 1 does not have to be formed point-symmetrically in a plan view. Further, the transportation container 1 does not have to be formed line-symmetrically about the center line parallel to the long sides and the center line parallel to the short sides in plan view.

As is clear from the first to third embodiments and their modifications described above, the transportation container 1 of the first aspect projects upward from the bottom wall 11 and the outer peripheral portion of the bottom wall 11. and a side wall 12, and has an accommodating space 10 opened upward. The side wall 12 has an upper protrusion 5 that protrudes upward from a part of the upper end face, and a lower recess 6 that is recessed upward at a position corresponding to the upper protrusion 5 in a plan view of the lower end face and into which the upper protrusion 5 can be inserted. , have The side wall 12 includes a lower protrusion 7 that protrudes downward in a part of the lower recess 6 and an upper protrusion that is recessed downward at a position corresponding to the lower protrusion 7 in a plan view of the upper protrusion 5 and into which the lower protrusion 7 can be inserted. and a recess 8 .

According to the first aspect, the worker engages the lower concave portion 6 of the upper transporting container 1 with the upper protrusion 5 of the lower transporting container 1 and then moves the lower transporting container 1 on the lower transporting container 1 . The lower protrusion 7 of the upper transporting container 1 is engaged with the upper recessed part 8 to facilitate stacking the upper transporting container 1 on the lower transporting container 1 and to facilitate the horizontal direction of the stacked transporting containers 1 . It is safe because it is difficult to fall down because the displacement of the position in the case is suppressed.

The second aspect is realized by a combination with the first aspect. In the second aspect, in plan view, the first clearance 14 formed between the inner surface of the lower recess 6 and the outer surface of the upper projection 5 is the distance between the inner surface of the upper recess 8 and the outer surface of the lower projection 7. larger than the second clearance 15 formed therebetween.

According to the second aspect, in the stacking state, even if the number of stacked transporting containers 1 increases, the positional deviation of the uppermost transporting container 1 from the lowermost transporting container 1 in the horizontal direction is further increased. Suppressed.

The third aspect is realized by a combination with the first or second aspect. In the third aspect, the upper protrusion 5 has guide surfaces 53 at both ends thereof in the circumferential direction along the outer peripheral portion of the bottom wall 11, the guide surfaces 53 being inclined so as to become lower from the center side to the edge side.

According to the third aspect, the lower concave portion 6 of the upper transporting container 1 is easily engaged with the upper protrusion 5 of the lower transporting container 1 .

The fourth aspect is realized by combining with any one of the first to third aspects. In the fourth aspect, the upper protrusion 5 has a guide surface that slopes downward toward the upper recess 8 in both regions adjacent to the upper recess 8 in the circumferential direction along the outer peripheral portion of the bottom wall 11. 54.

According to the fourth aspect, the lower projecting portion 7 of the lower transporting container 1 is easily engaged with the upper recessed portion 8 of the upper transporting container 1 .

1 transportation container 10 accommodation space 11 bottom wall 12 side wall 14 first clearance 15 second clearance 5 upper protrusion 53 guide surface 54 guide surface 6 lower recess 7 lower protrusion 8 upper recess

Claims (2)

A transportation container comprising a bottom wall having a rectangular shape in a plan view and a side wall projecting upward from the outer peripheral portion of the bottom wall, and having an accommodating space inside which opens upward,
The side wall along the long side of the bottom wall has an upper protrusion that protrudes upward in a part of the upper end surface, and a recess that is recessed upward at a position corresponding to the upper protrusion in a plan view of the lower end surface. an insertable lower recess;
The side wall along the long side of the bottom wall includes a lower protrusion that protrudes downward in a part of the lower recess, and a lower protrusion that is recessed downward at a position corresponding to the lower protrusion in a plan view of the upper protrusion. an upper recess into which the lower projection can be inserted;
The upper recess is open upward and outward and is located in the center of the side wall in the direction along the long side,
In plan view, a first clearance formed between the inner surface of the lower recess and the outer surface of the upper protrusion is a second clearance formed between the inner surface of the upper recess and the outer surface of the lower protrusion. greater than the clearance of
The upper protuberance has guide surfaces on both sides adjacent to the upper recess in the circumferential direction along the outer peripheral portion of the bottom wall, the guide surfaces being inclined so as to become lower as they approach the upper recess. . A transportation container comprising a bottom wall having a rectangular shape in a plan view and a side wall projecting upward from the outer peripheral portion of the bottom wall, and having an accommodating space inside which opens upward,
The side wall along the long side of the bottom wall has an upper protrusion that protrudes upward in a part of the upper end surface, and a recess that is recessed upward at a position corresponding to the upper protrusion in a plan view of the lower end surface. an insertable lower recess;
The side wall along the long side of the bottom wall includes a lower protrusion that protrudes downward in a part of the lower recess, and a lower protrusion that is recessed downward at a position corresponding to the lower protrusion in a plan view of the upper protrusion. an upper recess into which the lower projection can be inserted;
The lower concave portion is a space opened downward surrounded by a lower horizontal piece, a lower outer vertical piece, and a lower inner vertical piece constituting a lower frame portion on the lower end surface of the side wall,
the lower protrusion protrudes downward from the lower horizontal piece from the lower outer vertical piece to the lower inner vertical piece;
The upper recess is open upward, inward, and outward, and is located in a central portion of the side wall in a direction along the long side,
In plan view, a first clearance formed between the inner surface of the lower recess and the outer surface of the upper protrusion is a second clearance formed between the inner surface of the upper recess and the outer surface of the lower protrusion. greater than the clearance of
The upper protuberance has guide surfaces on both sides adjacent to the upper recess in the circumferential direction along the outer peripheral portion of the bottom wall, the guide surfaces being inclined so as to become lower as they approach the upper recess. .

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