JP2019156444A - Transportation container - Google Patents

Abstract

To provide a transportation container difficult to fall and safe as an upper transportation container is easily loaded on a lower transportation container and misalignment of the loaded transportation container in a horizontal direction is suppressed.SOLUTION: A transportation container 1 comprises: a bottom wall 11; and a side wall 12 that projects from the outer peripheral part of the bottom wall 11, and has a housing space 10 opened upward therein. The side wall 12 has an upper projected part 5 that projects upward on a part of an upper end surface, and a lower recess 6 which is recessed upward at a position corresponding to the upper projected part 5 in the plan view of a lower end surface and into which the upper projected part 5 can be inserted.SELECTED DRAWING: Figure 5

Description

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

  2. Description of the Related Art Conventionally, a transport container that can be in a so-called stacking state in which an upper container is stacked on a lower container is known. (For example, refer to Patent Document 1).

Utility Model Registration No. 2573268

  The transport container needs to have a dimensional tolerance for molding, and in the stacking state, a clearance is required between the upper transport container and the lower transport container. In such a transport container, when an old transport container and a new transport container are mixed, the old transport container is often shrunk and changes in size with time. If the number increases, the position shift in the horizontal direction of the transport container may increase.

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

  The present invention has been invented in view of the above-mentioned conventional problems, and it is easy to stack the upper transport container on the lower transport container, and the horizontal displacement of the stacked transport container is An object of the present invention is to provide a safe transport container that is suppressed because it is suppressed.

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

  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 the inner surface of the upper recess. And a second clearance formed between 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 protrusion is lower toward both ends in the circumferential direction along the outer periphery of the bottom wall as it goes from the center side to the edge side. It has a guide surface which inclines so as to become.

  The invention according to a fourth aspect is the invention according to any one of the first to third aspects, wherein the upper protrusion is located on both sides adjacent to the upper concave portion in the circumferential direction along the outer peripheral portion of the bottom wall. The region has a guide surface that is inclined so as to become lower as it approaches the upper recess.

  In the invention according to claim 1, it is easy to stack the upper transport container on the lower transport container, and the horizontal displacement of the stacked transport container is suppressed, so that it is difficult to collapse. It is safe.

  In the invention which concerns on Claim 2, the shift | offset | difference of the position in the horizontal direction of the piled container for conveyance is suppressed further.

  In the invention according to claim 3, when the upper transport container is stacked on the lower transport container, the lower recess is easily engaged with the upper protrusion.

  In the invention according to claim 4, when the upper transport container is stacked on the lower transport container, the lower protrusion is easily engaged with the upper recess.

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

  The present disclosure relates to a transport container, and more particularly to a transport container that can be stacked.

  Hereinafter, 1st embodiment of the container for conveyance which concerns on this indication is described based on FIGS.

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

  As shown to FIG. 1A, the container 1 for conveyance is equipped with the bottom wall 11 and the side wall 12, and has the accommodating space 10 open | released upwards inside. The container 1 for conveyance is integrally shape | molded with resin. In the following description, regarding the upper and lower sides, the direction in which the accommodation space 10 is opened in the transport container 1 is defined as the upper side, and the opposite is the lower side. Moreover, let the direction which leaves | separates from the center of the container 1 for conveyance be outward, and let the direction which approaches a center be inward.

  As shown in FIG. 2, the bottom wall 11 has a rectangular shape in plan view with a long side length of about 100 to 120 cm and a short side length of about 40 to 60 cm. The bottom wall 11 is formed in a mesh shape. That is, as shown in FIG. 1B, the bottom wall 11 extends in parallel with the long side and is arranged in parallel in the short side direction, and the bottom wall 11 extends in parallel with the short side and aligned in the long side direction. A plurality of second bottom ribs 112 provided. Each first bottom rib 111 intersects with each second bottom rib 112, and the first bottom rib 111 and the second bottom rib 112 constitute a lattice. The upper surface of the bottom wall 11 is located on the same plane, and the lower surface of the bottom wall 11 is also located on the same plane below the upper surface. Between the adjacent first bottom ribs 111 and between the adjacent second bottom ribs 112, 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, from the pair of long side portions of the bottom wall 11, a pair of first side walls 121 having a rectangular shape in front view shown in FIG. Further, from the pair of short side portions of the bottom wall 11, a pair of second side walls 122 having a rectangular shape in front view shown in FIG. 4A protrude upward. 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 short side direction 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 protrudes also downward from the outer peripheral part of the bottom wall 11 in 1st embodiment. That is, the bottom wall 11 is connected to the upper and lower intermediate portions of the side wall 12.

  As shown in FIG. 1B, the side wall 12 has a plurality of side vertical pieces 2 that extend in the vertical direction and are arranged in parallel in the circumferential direction. The side vertical piece 2 has a width of about 1 to 3 cm (length in the inner and outer directions) and a flat plate shape with 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 having a width (length in the inner and outer directions) of about 1 to 3 cm. The first upper horizontal piece 31 is a flat plate having a thickness (vertical length) of about 1 to 3 mm. The first upper horizontal piece 31 is continuous in the circumferential direction in a plan view and has an annular shape.

  Further, 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 the second upper horizontal piece 32 has an annular shape continuously in the circumferential direction, like the first upper horizontal piece 31. Yes. The first upper horizontal piece 31 and the second upper horizontal piece 32 are connected by a plurality of connecting pieces 33 arranged at intervals in the circumferential direction. The first upper horizontal piece 31, the second upper horizontal piece 32, and the connecting piece 33 constitute the upper frame portion 3.

  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 part 4 has a lower horizontal piece 41 having a width of about 1 to 3 cm (length in the inner and outer directions). The lower horizontal piece 41 is a flat plate having 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, the 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 of about 1 to 3 cm (length in the vertical direction) and a flat plate shape with a thickness (length in the inner and outer direction) of about 1 to 3 mm. The lower outer vertical piece 42 is continuous in the circumferential direction and has an annular shape.

  The 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 has an annular shape continuously in the circumferential direction, like the lower outer vertical piece 42.

  The lower horizontal piece 41, the lower outer vertical piece 42 and the lower inner vertical piece 43 constitute the lower frame portion 4. Further, the side vertical piece 2, the upper frame portion 3, and the lower frame portion 4 constitute a side wall 12. Between the upper frame part 3 and the lower frame part 4 of the side wall 12 and between the adjacent side vertical pieces 2, the side wall 12 has air permeability.

  Moreover, the container 1 for conveyance is provided with the partition wall 13 which partitions off the accommodation space 10, as shown to FIG. 1B. The partition wall 13 is located at a position (hereinafter referred to as a partition position) that is about 1/3 of the length of the long side of the bottom wall 11 from both ends to the center side in the long side direction of the bottom wall 11. It is arranged along the short side direction. 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 direction length) of about 10 to 20 cm. In the first embodiment, it is the same as the height of the side wall 12. is there.

  The partition wall 13 includes a plurality of partition vertical pieces 132 protruding upward from the bottom wall 11, and a partition upper horizontal piece 131 formed at the upper end portion of the partition vertical piece 132. The plurality of partition vertical pieces 132 are arranged at intervals in the short side direction at each partition position. The upper horizontal piece 131 extends in the short side direction at each partition position, and the end portion is continuous with the side wall 12. The partition wall 13 is integrally formed with resin together with the bottom wall 11 and the side wall 12 to constitute the transport container 1. Between the bottom wall 11 and the partition upper horizontal piece 131 and between the adjacent partition vertical pieces 132, each penetrates in the long side direction, and the partition wall 13 has air permeability.

  The transport container 1 has a lower end surface of the side wall 12 of the upper transport container 1 on an upper surface of the first upper horizontal piece 31 and the second upper horizontal piece 32 which are upper end surfaces of the side wall 12 of the lower transport container 1. The lower surfaces of the lower outer vertical piece 42 and the lower inner vertical piece 43 are placed and supported, and are in a stacking state. In order to maintain the stacking state, that is, to prevent the upper transport container 1 from moving relative to the lower transport container 1 in the horizontal direction, the transport container 1 is A protrusion 5 and a lower recess 6 are provided. The upper protrusion 5 protrudes upward at a part of the upper end surface of the side wall 12. The lower recess 6 is recessed upward at a position corresponding to the upper protrusion 5 in a plan view of the lower end surface of the side wall 12, and the upper protrusion 5 is inserted so that the lower recess 6 can be engaged with the upper protrusion 5. is there.

  Specifically, in the first embodiment, as shown in FIG. 1A and FIG. 2, another part of the upper end surface of the upper frame portion 3 is arranged on a part of each side in the circumferential direction of the upper end surface of the upper frame portion 3. An upper protrusion 5 protruding upward from the portion is formed. In addition, the part in which the upper protrusion 5 of the upper end part of the upper frame part 3 is not formed is located on the same plane, and the upper protrusion 5 protrudes above this same plane.

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

  Further, as shown in FIG. 1B, the upper protrusion 5 has guide surfaces 53 that are inclined so as to decrease from the center side toward the edge side at both ends in the circumferential direction. Specifically, the guide surface 53 is a flat surface that is inclined so as to become lower from the circumferential center side toward the circumferential edge side. 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 recess 6 will be described. As shown in FIG. 5B, a space that is surrounded by the lower horizontal piece 41, the lower outer vertical piece 42, and the lower inner vertical piece 43 constituting the lower frame portion 4 and is opened downward is formed. As shown in FIG. 3B, lower ribs 44 are formed on both sides of a 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 surrounded by the lower horizontal piece 41, the lower outer vertical piece 42, the lower inner vertical piece 43, and the lower ribs 44 located on both sides in the circumferential direction is opened below the lower end surface of the lower frame portion 4. The lower recess 6 is recessed. In addition, the lower end surface of the lower frame part 4, ie, the lower end surface of the lower outer vertical piece 42 and the lower inner vertical piece 43, is located on the same plane, and has a depth of about 1 to 5 cm above the same plane. That is, the lower recessed part 6 is recessed, which is the same as or slightly deeper than the protruding height of the upper protruding part 5.

  More specifically, the first side wall 121 has a first upper region corresponding to the first upper protrusion 51 in a region having a total length of about 60 to 80 cm from the center in the long side direction to about 30 to 40 cm on both sides. A first lower recess 61 that is engaged with the protrusion 51 is formed. Further, as shown in FIG. 4B, the second side wall 122 has 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 corresponding to the second upper protrusion 52. In addition, a second lower recess 62 that is engaged with the second upper protrusion 52 is formed. The first lower recess 61 and the second lower recess 62 constitute the lower recess 6.

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

  Further, as shown in FIG. 4B, the second side wall 122 extends inward from the lower outer vertical piece 42 to the middle portion between the lower outer vertical piece 42 and the lower inner vertical piece 43 at the center in the short side direction, and A second lower protrusion 72 made of a rib protruding downward from the lower horizontal piece 41 is formed. The first lower protrusion 71 and the second lower protrusion 72 constitute the lower protrusion 7.

  As shown in FIG. 5B, the thickness (circumferential length) 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.

  Further, the lower protrusion 7 has a guide surface 73 that is inclined so as to become higher toward the inner side at the lower end portion and the inner end portion.

  As shown in FIGS. 5A, 3 </ b> A, and 3 </ b> B, the upper recess 8 is recessed downward at a position corresponding to the lower protrusion 7 in the circumferential direction of the upper protrusion 5. The 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 part of the first side wall 121 in the long side direction, in the region from the outer end edge of the first upper horizontal piece 31 to the intermediate part between the outer end edge and the inner end edge, A first upper recess 81 that is opened outward is formed. Further, as shown in FIGS. 4A and 4B, a region extending from the outer end edge of the first upper horizontal piece 31 to the intermediate portion between the outer end edge and the inner end edge in the center portion in the short side direction of the second side wall 122. In addition, a second upper recess 82 similar to the first upper recess 81 that is recessed downward and opened upward and outward is formed.

  The length in the circumferential direction of the first upper recess 81 and the second upper recess 82 is about 3 to 4 mm, and the width (length in the inner and outer directions) is about 3 to 5 mm. Moreover, the depth of the 1st upper recessed part 81 and the 2nd upper recessed part 82 below from the part in which the 1st upper recessed part 81 and the 2nd upper recessed part 82 of the upper end surface of the upper protrusion 5 are not formed is 1-3 cm. However, it may be slightly deeper or slightly shallower than the vertical length of the lower protrusion 7.

  Further, as shown in FIG. 5A, the upper protrusion 5 has guide surfaces 54 that are inclined so as to become lower toward the upper recess 8 in the regions on both sides adjacent to the upper recess 8 in the circumferential direction. Specifically, the guide surface 54 is a flat surface that is inclined so as to decrease from the end edge side in the circumferential direction toward the center side in the circumferential direction.

  The transport container 1 described above is formed in a point symmetry and a line symmetry with a center line parallel to the long side and a center line parallel to the short side as the center in plan view.

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

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

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

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

  Since the upper protrusion 5 can be located at any position in 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 only the upper protrusion 5 and the lower recess 6 have the clearances 141 to 144 of 4 mm, the upper transport container 1 has a total length of 8 mm in the long side direction and the short side direction with respect to the lower transport container 1. There will be a total clearance of 8 mm.

  In this case, as shown in FIG. 7, for example, when the transport container 1 is displaced in the same direction by 4 mm with respect to the transport container 1 immediately below and is stacked in 20 stages, the top transport container 1 in a plan view. Will cause a displacement 19 of about 8 cm with respect to the lowest transport container 1. In this respect, by providing the upper concave portion 8 and the lower protrusion 7, it is possible to suppress the displacement of the uppermost transport container 1 in the stacking state with respect to the lowermost transport container 1.

  The transport container 1 is formed such that a second clearance 15 is formed between the inner surface of the upper recess 8 and the outer surface of the lower protrusion 7 in plan view. Therefore, as shown in FIG. 8, in the stacking state, the second clearance is provided between the outer surface of the lower protrusion 7 of the upper transport container 1 and the inner surface of the upper recess 8 of the lower transport container 1. 15 is formed. The second clearance 15 includes a clearance 151 between one inner surface and the lower projection 7 in the circumferential direction of the upper recess 8, and a clearance 152 between the other inner surface and the lower projection 7 in the circumferential direction of the upper recess 8. And a clearance 153 between the inner surface on the inner side of the upper recess 8 and the lower protrusion 7. In the first embodiment, for 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, and the clearance 153 is about 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 about 1 mm, and the clearance 153 is about 4 mm.

  In other words, at least the clearances 151 and 152 between the inner surface in the circumferential direction of the upper recess 8 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, clearance 151, 152 (about 1 mm) <clearance 141, 142 (about 3 mm) <clearance 143, 144 (about 4 mm).

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

  In this case, for example, even if the transport container 1 is displaced in the same direction by 1 mm with respect to the transport container 1 directly below and is stacked in 20 stages, the transport container at the bottom of the top transport container 1 in plan view The deviation from 1 is about 2cm.

  In addition, the operator engages the lower recess 6 of the upper transport container 1 with the upper protrusion 5 of the lower transport container 1 and then engages the upper recess 8 of the lower transport container 1 with the upper recess 8. The lower protrusion 7 of the transport container 1 is inserted, and the lower protrusion 7 is engaged with the upper recess 8. At this time, the upper protrusion 5 has guide surfaces 54 on both sides adjacent to the upper recess 8, so that the lower protrusion 7 of the upper transport container 1 is above the lower transport container 1. It is easy to insert into the recess 8.

  In the transporting container 1 described above, even when the number of stacked transporting containers 1 increases in the stacking state, the horizontal displacement of the uppermost transporting container 1 with respect to the lowermost transporting container 1 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 transport container in both the long side direction and the short side direction 1 is suppressed.

  Moreover, 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 bottom wall 11 of the upper transport container 1 is suppressed from being bent.

  Next, the transport container 1 according to the second embodiment will be described with reference to FIGS. 9, 10A, and 10B. In addition, since 2nd embodiment is the same as 1st embodiment for the most part, description is abbreviate | omitted about the same part and it mainly demonstrates a different part.

  In the second embodiment, a handle 16 is formed at the upper end of the partition wall 13 as shown in FIG. 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 at the lower end of the partition wall 13.

  In the second embodiment, as shown in FIG. 10A, the upper side of the upper side of the upper frame 3 is recessed downward and opened upward, inward and outward at the center of the side wall 12. A recess 8 is formed. In the first embodiment, the upper concave portion 8 is formed in a region from the outer edge of the upper frame portion 3 to an 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.

  Moreover, in 2nd embodiment, as shown to FIG. 10B, it is the lower protrusion which consists of a rib which protrudes below the lower horizontal piece 41 in the center part of the side wall 12 from the lower outer vertical piece 42 to the lower inner vertical piece 43. 7 is formed. In the first embodiment, the lower projection 7 is formed at the center of the side wall 12 only from the lower outer vertical piece 42 to the middle portion between the lower outer vertical piece 42 and the lower inner vertical piece 43. Was formed.

  Thereby, the lower protrusion 7 of the lower transport container 1 is easily inserted by the upper recess 8 of the upper transport container 1.

  Next, the transport container 1 according to the 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 is omitted, and different parts are mainly described.

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

  In the third embodiment, as shown in FIG. 12B, the lower protrusion 7 extends from the lower outer vertical piece 42 to the middle portion between the lower outer vertical piece 42 and the lower inner vertical piece 43 at the center of the side wall 12. A lower protrusion 7 is formed which is formed of a rib extending inward and protruding downward from the lower horizontal piece 41.

  Thereby, the upper recessed part 8 is formed only by forming a notch in the first upper horizontal piece 31, and the upper recessed part 8 is easily formed.

  Another example of the third embodiment is shown in FIGS. 13A and 13B. In this other example, as shown in FIG. 13A, an upper recess 8 that is recessed downward and opened upward, downward, and inward from the inner edge to the outer edge of the upper frame 3 at the center of the side wall 12. 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 recess 8.

  Further, in this alternative example, as shown in FIG. 13B, the lower protrusion 7 is formed at the center 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 protrusion 7 is formed which is formed of a rib extending in the direction and protruding downward from the lower horizontal piece 41.

  Thereby, the upper recessed part 8 is formed only by forming a notch in the first upper horizontal piece 31, and the upper recessed part 8 is easily formed.

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

  The present disclosure is particularly effective when the transport container 1 is formed of a thermoplastic synthetic resin such as polypropylene or polyethylene. However, the transport container 1 is formed of a resin other than a thermoplastic synthetic resin such as polypropylene or polyethylene. May be. Further, the transport 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 as separate bodies without being integrally formed with 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 rectangular shape, and may be a square or other shapes. Moreover, the magnitude | size in planar view of the bottom wall 11, the thickness of resin which comprises the bottom wall 11, etc. are not limited. Further, the upper surface and the lower surface of the bottom wall 11 do not have to be located on the same plane. Moreover, the bottom wall 11 may not be formed in a mesh shape but may be formed by a plate-like member that cannot be vented.

  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.

  The side wall 12 has a rectangular shape in front view in the first embodiment, but the shape in front view is not limited to a rectangular shape, and may be a square or other shapes. Moreover, the magnitude | size in the front view of the side wall 12, the thickness of resin which comprises the side wall 12, etc. are not limited. The side wall 12 does not have a plurality of side longitudinal ribs, and may be formed of a plate-like member that cannot be vented. Further, the side wall 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. Further, 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 the one constituted 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. Further, 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. Further, 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 the one constituted by the lower horizontal piece 41, the lower outer vertical piece 42, and the lower inner vertical piece 43.

  The side wall 12 is not limited to the one constituted by the side vertical piece 2, the upper frame portion 3, and the lower frame portion 4.

  The partition wall 13 is not limited to the one formed by the partition vertical piece 132 and the partition upper horizontal piece 131, and may be formed by a plate-like member that cannot be vented. The thickness and height of the partition wall 13 are not limited. Moreover, the hole which penetrates the partition wall 13 may be formed in the lower part of the partition wall 13, and the air permeability of the partition wall 13 improves in this case. Further, the partition wall 13 may not be provided in the transport container 1.

  The upper protrusion 5 is not limited to the one formed by the first upper horizontal piece 31 bending upward. The upper protrusion 5 may not have the guide surface 53 at the end in the circumferential direction. The protrusion height, the circumferential length, and the 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, the circumferential length, and the width of the lower recess 6 are not limited. The position where the lower recessed part 6 is provided in the lower end surface of the side wall 12 is not limited.

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

  The guide surface 73 may be formed by a rounded curved surface (so-called R shape). Moreover, the lower protrusion 7 does not need to have the guide surface 73 which inclines so that it may become so high that it goes inside.

  The upper and lower lengths, the circumferential length and the width of the upper recess 8 are not limited. The position where the upper recess 8 is provided in the upper protrusion 5 is not limited.

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

  The container 1 for conveyance does not need to be formed point-symmetrically in plan view. Further, the transport container 1 may not be formed symmetrically about the center line parallel to the long side and the center line parallel to the short side in plan view.

  As is apparent from the first to third embodiments described above and the modifications thereof, the transport container 1 of the first aspect protrudes upward from the bottom wall 11 and the outer peripheral portion of the bottom wall 11. And a housing space 10 that is open upward. The side wall 12 has an upper protrusion 5 protruding upward at a part of the upper end surface, and a lower recess 6 into which the upper protrusion 5 can be inserted at a position corresponding to the upper protrusion 5 in plan view of the lower end surface. Have. The side wall 12 has a lower protrusion 7 protruding downward in a part of the lower recess 6, and an upper portion in which the lower protrusion 7 can be inserted downward at a position corresponding to the lower protrusion 7 in plan view of the upper protrusion 5. And a recess 8.

  According to the first aspect, the operator engages the lower recess 6 of the upper transport container 1 with the upper protrusion 5 of the lower transport container 1 and then the lower transport container 1. The lower protrusion 7 of the upper transport container 1 is engaged with the upper recess 8 so that the upper transport container 1 can be easily stacked on the lower transport container 1 and the horizontal direction of the stacked transport container 1 Since the position shift is suppressed, it is hard to fall over and is safe.

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

  According to the second aspect, even in the stacking state, even when the number of stacked transport containers 1 is increased, the horizontal displacement of the uppermost transport container 1 with respect to the lowermost transport container 1 is further increased. It is 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 that are inclined so as to decrease from the center side toward the edge side at both ends in the circumferential direction along the outer peripheral portion of the bottom wall 11.

  According to the third aspect, the lower recess 6 of the upper transport container 1 is easily engaged with the upper protrusion 5 of the lower transport container 1.

  The fourth aspect is realized by a combination with any one of the first to third aspects. In the fourth aspect, the upper protrusion 5 is a guide surface that is inclined so as to become lower in the circumferential direction along the outer periphery of the bottom wall 11 so as to be closer to the upper recess 8 in the regions on both sides adjacent to the upper recess 8. 54.

  According to the fourth aspect, the lower protrusion 7 of the lower transport container 1 is easily engaged with the upper recess 8 of the upper transport container 1.

DESCRIPTION OF SYMBOLS 1 Container for conveyance 10 Storage space 11 Bottom wall 12 Side wall 14 1st clearance 15 2nd clearance 5 Upper protrusion 53 Guide surface 54 Guide surface 6 Lower recessed part 7 Lower protruding part 8 Upper recessed part

Claims (4)

A transport container having a bottom wall and a side wall projecting upward from an outer peripheral portion of the bottom wall, and having an accommodation space opened upward;
The side wall includes an upper protrusion that protrudes upward at a part of the upper end surface, and a lower recess that is recessed upward at a position corresponding to the upper protrusion in plan view of the lower end surface and into which the upper protrusion can be inserted. Have
The side wall has a lower protrusion protruding downward in a part of the lower recess, and an upper recess in which the lower protrusion can be inserted at a position corresponding to the lower protrusion in a plan view of the upper protrusion. And a transport container. 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. The transport container according to claim 1, wherein the transport container is larger than the clearance. 3. The transport according to claim 1, wherein the upper protrusion has a guide surface that is inclined so as to become lower toward the edge side from the center side at both ends in a circumferential direction along the outer peripheral portion of the bottom wall. Container. The upper protrusion has guide surfaces that are inclined so as to become lower toward the upper recess in the regions on both sides adjacent to the upper recess in the circumferential direction along the outer periphery of the bottom wall. The container for conveyance as described in any one of -3.

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