JP6903313B2 - Foldable transport container - Google Patents

Description

The present invention relates to a foldable transport container configured to be foldable.

This type of foldable transport container comprises, for example, a body having a bottomed box shape. The main body has a bottom wall having a rectangular plate shape, a pair of short side walls facing each other erected on the peripheral edge of the bottom wall, and a pair of long side walls facing each other erected on the peripheral edge of the bottom wall. Be prepared. Each short side wall and each long side wall are configured to be foldable via a side wall rotating portion for folding the side wall inward of the main body. The foldable transport container is further provided with a strip to cover the opening of the main body. The strip is formed in the opening of the main body, and is used to displace the strip to the covering position where the strip covers a part of the opening of the main body and the open position where the strip is oriented upward to open the opening of the main body. It is rotatably connected to the short side wall via a rotating portion (see, for example, Patent Document 1).

Japanese Unexamined Patent Publication No. 2003-205938

When each long side wall of the main body containing the contents is grasped and the foldable transport container is carried by hand in this state, the load of the contents contained in the main body causes the main body to be twisted. Each long side wall may be deformed so as to bend each long side wall inward of the main body. When each long side wall is deformed in this way, the distance between the pair of long side walls is also reduced in the vicinity of the short side wall, and as a result, an external force that reduces the length of the strip is located at the covering position. The strip is rotated to the open position. Such rotation of the strip is also a problem that is particularly likely to occur in a foldable transport container in which each long side wall is easily deformed, that is, in a foldable transport container in which each long side wall is thin.
An object of the present invention is to provide a foldable transport container capable of suppressing displacement of a strip at a covering position to an open position when the foldable transport container is carried by hand.

A foldable transport container for solving the above problems includes a bottom wall having a rectangular peripheral edge, a first side wall erected on a pair of first side walls on the peripheral edge, and a pair of first side walls on the peripheral edge. A main body having a bottomed box shape including a second side wall erected on two sides is provided, and at the lower end of each side wall, the side wall is folded inward of the main body via a side wall rotating portion. It is a foldable transport container with each side wall configured to be foldable. This foldable transport container is a strip extending in the extending direction of the first side, and is rotated to the first side wall via a strip rotating portion having a rotating shaft extending in the extending direction. The strip that is movably connected and is displaced inwardly to cover a portion of the opening of the body and to an open position that is oriented upwards of the body to open the opening. In a state where the strip is located at the covering position, the strip is located below the upper end of each side wall, and each second side wall has an engaging portion protruding inward. The strip is provided with an engaged portion protruding outward of the main body, the strip is located at the covering position, and the second side wall is bent inward of the main body. In a state where an external force acts, the engaged portion includes a portion located below the engaging portion.

According to the above configuration, when an external force that bends the second side wall inward of the main body acts on the pair of second side walls, a part of the engaged portion provided by the strip is provided by the second side wall. Located below the joint. Therefore, before the strip plate located at the covering position rotates toward the open position, the engaged portion provided by the strip plate and the engaging portion provided by the second side wall are engaged with each other to form the strip plate. Rotation is suppressed. As a result, when the foldable transport container is carried by hand, the strip plate at the covering position is prevented from being displaced to the open position.

In the foldable transport container, each of the second side walls further includes a fitting portion having a step in the extending direction of the first side, and the strip is formed of the strip in the extending direction of the first side. The fitted portion is provided at both ends of the above, and the fitted portion is located on the side of the strip rotating portion with respect to the engaged portion, and the strip is covered. It may be configured to be fitted with the fitting portion while being positioned at the position.

According to the above configuration, when the foldable transport container is carried by hand, the fitting portion provided on the second side wall and the fitted portion provided on the strip plate are fitted to rotate the strip plate. It can be further suppressed. The change in the distance between the second side walls due to the above-mentioned external force is smaller in the portion closer to the first side wall, that is, smaller in the portion closer to the strip rotating portion. In this respect, the fitting between the fitting portion and the fitted portion is realized on the side of the strip rotating portion rather than the engagement between the engaging portion and the engaged portion. Therefore, the fitting between the fitting portion and the fitted portion is less affected by the change in the distance between the second side walls and the like than the engagement between the engaging portion and the engaged portion. It is also possible to maintain the mating of.

In the foldable transport container, the upper end of each of the second side walls further includes a receiving portion that is recessed downward, and the strips are fitted at both ends of the extending direction so as to protrude in the extending direction. The fitting portion is further provided with a fitting portion, and the fitting portion fits into the receiving portion with the strip plate located at the covering position, and the receiving portion has a convex portion protruding upward from the bottom surface of the receiving portion. The fitting portion partitions a space having a fitting opening on the bottom surface of the fitting portion, and as the fitting portion fits into the receiving portion, the convex portion is accommodated in the space. The engaging portion may be a protrusion protruding inward in the convex portion, and the engaged portion may be a protrusion protruding inward in the fitting opening at the fitting opening.

According to the above configuration, when the strip is located at the covering position, the fitting portion provided by the strip is fitted into the receiving portion provided by the second side wall. The fitting portion provided by the strip has a shape protruding in the extending direction of the first side wall, and the receiving portion provided by the second side wall has a concave shape that is recessed downward at the upper end of the second side wall. Therefore, the fitting portion provided in the strip is positioned along the upper end of the second side wall, that is, in the direction intersecting the extending direction of the first side wall by fitting the receiving portion and the fitting portion. Since the above-mentioned engaging portion and engaged portion are included in the receiving portion and the fitting portion, the position of the engaging portion and the position of the engaged portion extend from the first side wall. It becomes difficult to shift in the direction that intersects the direction. As a result, it is possible to more accurately obtain the above-mentioned effect due to the displacement of the engaging portion in the extending direction of the first side wall.

The perspective view which shows the perspective structure of the foldable transport container. The perspective view which shows the perspective structure of the foldable transport container in which a strip is located in an open position. A plan view showing a long side wall and a planar structure at both ends of a strip. A perspective view showing a perspective structure in which the end of the short side wall is viewed from diagonally above. The perspective view which shows the perspective structure which saw the edge of a strip from diagonally below. The cross-sectional view which shows the action of the protrusion of a short side wall and the protrusion of a strip. The operation diagram which shows the action between the protrusion of a short side wall and the protrusion of a strip. FIG. 5 is a cross-sectional view showing the action of the fitting portion of the short side wall and the fitting portion of the strip.

An embodiment of the foldable transport container will be described with reference to FIGS. 1 to 8. In the following description, the height direction and the horizontal direction are defined with reference to the assembled foldable transport container.

[Main body 11]
As shown in FIG. 1, the main body 11 constituting the foldable transport container has a bottomed long square box shape. The main body 11 includes a bottom wall 12 made of synthetic resin having a rectangular peripheral edge. The peripheral edge of the bottom wall 12 includes a pair of long side support sides 12L having substantially square pillars facing each other and a pair of short side support sides 12S having substantially square pillars facing each other. The main body 11 is a pair of long side walls 13 made of synthetic resin erected and supported at the upper ends of the pair of long side support sides 12L, and a pair of synthetic resin erected and supported at the upper ends of the pair of short side support sides 12S. It is provided with a short side wall 14 of the above. The height of the short side support side 12S is substantially equal to the thickness of the short side wall 14. The height of the long side support side 12L is substantially equal to the length obtained by adding the thickness of the short side wall 14 and the thickness of the long side wall 13.

Each of the upper end of the long side support side 12L and the upper end of the short side support side 12S includes a plurality of side wall rotating portions 13R and 14R. The lower end of the long side wall 13 is pivotally attached to the long side support side 12L so as to be rotatable inward of the main body 11, that is, foldable inward of the main body 11 via each side wall rotating portion 13R. There is. The lower end of the short side wall 14 is pivotally attached to the short side support side 12S so as to be rotatable inward of the main body 11, that is, foldable inward of the main body 11 via each side wall rotating portion 14R. There is. The long side support side 12L is an example of the first side, and the short side support side 12S is an example of the second side. The long side wall 13 is an example of the first side wall, and the short side wall 14 is an example of the second side wall.

Both ends of the long side wall 13 in the extending direction are provided with a plurality of assembly hole portions 13H penetrating in the extending direction of the long side wall 13. Both ends of the short side wall 14 in the longitudinal direction are provided with a plurality of assembly protrusions 14T protruding outward along the extending direction of the long side wall 13. Each assembly protrusion 14T of the short side wall 14 is fitted into the assembly hole portion 13H of the long side wall 13 one by one. Each of the erected long side walls 13 and each of the erected short side walls 14 are restricted from rotating outward of the main body 11 as well as fitting the assembly hole portion 13H and the assembly protrusion 14T. Further, each of the erected long side walls 13 and each of the erected short side walls 14 are folded inward of the main body 11 together with the release of the fitting between the assembly hole portion 13H and the assembly protrusion 14T.

[Strip 20]
The upper end of the long side wall 13 includes a plurality of shaft support portions 13S having a concave shape notched downward. The shaft support portions 13S are arranged at predetermined intervals in the extending direction of the long side wall 13. The upper end of each long side wall 13 is connected to a separate strip 20. The strip 20 includes a strip main body 21 having a strip shape extending in the extending direction of the long side wall 13. The length of the strip body 21 in the longitudinal direction is substantially equal to the distance between the outer surfaces of the pair of short side walls 14. The length of the strip main body 21 in the lateral direction is shorter than one-third of the distance between the inner surfaces of the pair of long side walls 13.

The strip 20 includes a plurality of strip rotating portions 22 protruding from the strip main body 21. The strip rotating portions 22 are arranged at predetermined intervals in the extending direction of the long side wall 13. Each strip rotating portion 22 has a shape protruding from one end surface extending in the longitudinal direction of the strip main body 21 toward the upper end of the long side wall 13. The distance between the strip rotating portions 22 adjacent to each other is substantially equal to the distance between the shaft support portions 13S adjacent to each other.

In the longitudinal direction of the strip main body 21, the width of the strip rotating portion 22 is shorter than the width of the shaft support portion 13S. In the lateral direction of the strip main body 21, the width of the strip rotating portion 22 is longer than the width of the shaft support portion 13S. Each strip rotating portion 22 includes a rotating shaft 22A extending in the longitudinal direction of the strip main body 21, and the rotating shaft 22A is pivotally supported by a shaft support portion 13S of the long side wall 13. The strip 20 is rotatably connected to the upper end of the long side wall 13 through the shaft support of the rotation shaft 22A by the shaft support portion 13S.
The rotatably configured strip 20 is oriented inward of the main body 11 to cover a part of the opening of the main body 11 (position shown in FIG. 1) and above the main body 11. It is displaced to the open position (position shown in FIG. 2) at which the opening of the main body 11 is opened.

FIG. 3 is a plan view of the foldable transport container as viewed from above, showing the strip 20 together with the long side wall 13 and the pair of short side walls 14 (left half), and a part of the strip 20. The figure (right half) showing only the long side wall 13 and the short side wall 14 is included.

As shown in FIG. 3, each end of the strip main body 21 in the longitudinal direction includes one fitting portion 40 protruding in the longitudinal direction of the strip main body 21. The upper end of each short side wall 14 includes one receiving portion 30 having a concave shape notched downward. The height of the receiving portion 30 is substantially the same as the height of the shaft support portion 13S, and is larger than the thickness of the strip main body 21. In the state where the strip 20 is located at the covering position, the receiving portion 30 accommodates the fitting portion 40 and restricts the strip 20 from further rotating inward of the main body 11. Further, with the strip 20 located at the covering position, the uppermost portion of the strip 20 is located below the upper end of the long side wall 13 and below the upper end of the short side wall 14. That is, with the strip 20 located at the covering position, the strip 20 is restricted from further rotating inward of the main body 11 and is surrounded by the bottom wall 12, the long side wall 13, and the short side wall 14. It is located inside the space. When the main body 11 of another transport container is stacked on the main body 11, the strip rotating portion 22 of the lower foldable transport container has a gap between it and the bottom wall 12 of the upper main body 11. Therefore, it is possible to prevent the strip 20 and the strip rotating portion 22 from being damaged by stacking.

[Receiving section 30]
FIG. 4 is a perspective view of the longitudinal end of the short side wall 14 viewed from diagonally above, and is an enlarged view of the perspective structure of the receiving portion 30.
As shown in FIG. 4, the receiving portion 30 has a concave shape in which the upper end of the short side wall 14 is cut out downward. The receiving portion 30 is a groove sandwiched between a pair of groove side surfaces arranged in the longitudinal direction of the short side wall 14. The bottom surface of the receiving portion 30 includes one convex portion 31 protruding upward. The convex portion 31 has a substantially L-shape when viewed from the direction facing the inner surface of the short side wall 14. The lower portion of the convex portion 31 is connected to one groove side surface of the receiving portion 30 and extends from one groove side surface toward the other groove side surface. That is, the lower portion of the convex portion 31 is supported by the bottom surface of the receiving portion 30 and the groove side surface of the receiving portion 30. The upper portion 32 of the convex portion 31 extends upward from the lower portion of the convex portion 31. The height of the convex portion 31 is shorter than the height of the receiving portion 30, and is substantially equal to the thickness of the strip main body 21. In the extending direction of the long side wall 13, the length of the convex portion 31 is shorter than the length of the receiving portion 30.

The inner surface of the convex portion 31 includes one protrusion 33 protruding inward of the main body 11. The protrusion 33 forms a step protruding inward of the main body 11 along the extending direction of the long side wall 13 on the inner surface of the convex portion 31. The protrusion 33 is located in the middle of the convex portion 31 in the height direction, and has a hemispherical shape protruding inward of the main body 11. The protrusion 33 is separated from the bottom surface of the receiving portion 30. The height of the protrusion 33 is about 1/3 of the height of the convex portion 31. In the extending direction of the long side wall 13, the length of the protrusion 33, that is, the amount of protrusion of the protrusion 33 is such that the protrusion 33 does not protrude from the receiving portion 30. The protrusion 33 is an example of an engaging portion.

The inner surface of the short side wall 14 includes one fitting portion 34 having a hemisphere recessed in the extending direction of the long side wall 13. The longitudinal end of the short side wall 14 includes the assembly protrusion 14T described above, and the fitting portion 34 is located on the side of the end of the short side wall 14 with respect to the receiving portion 30. The position of the fitting portion 34 in the height direction is substantially equal to the position of the protrusion 33 in the height direction. That is, the fitting portion 34 is located on the inner surface of the short side wall 14 on the side of the end of the short side wall 14 with respect to the receiving portion 30 and at a position in the height direction substantially equal to that of the receiving portion 30. A step recessed in the extending direction of the long side wall 13 is formed.

[Fit portion 40]
FIG. 5 is a perspective view of the longitudinal end of the strip 20 viewed from diagonally below, and is an enlarged view of the perspective structure of the fitting portion 40.
As shown in FIG. 5, each end of the strip 20 in the longitudinal direction includes one fitting portion 40 having a convex shape protruding in the extending direction of the long side wall 13. The height of the fitting portion 40 is shorter than the height of the receiving portion 30 in a state where the fitting portion 40 is fitted into the receiving portion 30. In the extending direction of the long side wall 13, the length of the fitting portion 40 is substantially equal to the length of the receiving portion 30. The fitting portion 40 includes a fitting hole 41 that penetrates the fitting portion 40 in the height direction in a state where the fitting portion 40 is fitted into the receiving portion 30, that is, in a state where the strip 20 is located at a covering position. .. The fitting hole 41 is an example of a space for partitioning the fitting portion 40, and the fitting opening 43 is partitioned on the bottom surface of the fitting portion 40. The fitting hole 41 has an opening that cuts out a part of the fitting portion 40 in the lateral direction of the strip 20 and connects to the fitting opening 43. In the longitudinal direction of the short side wall 14, the length of the fitting opening 43 is substantially equal to the length of the convex portion 31. In the extending direction of the long side wall 13, the length of the fitting opening 43 is longer than the length of the convex portion 31.

The fitting portion 40 includes a protrusion 44 protruding inward from the fitting opening 43 from the fitting opening 43. The protrusion 44 is provided with a slope that protrudes in the extending direction of the long side wall 13 as the strip plate 20 is located at the covering position and moves upward from the fitting opening 43. The fitting portion 40 is provided with an engaging groove 45 extending in the height direction above the protrusion 44 in a state where the fitting portion 40 is fitted into the receiving portion 30. In the longitudinal direction of the short side wall 14, the width of the engaging groove 45 is longer than the width of the protrusion 33. In the extending direction of the long side wall 13, the depth of the engaging groove 45 is larger than the amount of protrusion of the protrusion 33. The protrusion 44 is an example of an engaged portion.

The end face in the longitudinal direction of the strip 20 includes one fitted portion 42 having a hemisphere protruding in the extending direction of the strip 20. The fitted portion 42 is located on the side of the strip rotating portion 22 with respect to the fitting portion 40 in the end surface of the strip 20 in the longitudinal direction, and forms a step protruding in the extending direction of the long side wall 13. .. The fitted portion 42 has a shape that can be fitted with the fitting portion 34 of the short side wall 14, and fits with the fitting portion 34 of the short side wall 14 when the strip 20 is located at the covering position.

[Assembly of foldable transport container]
When assembling the foldable transport container, first, the pair of long side walls 13 facing each other are rotated 90 degrees to stand on the upper end of the long side support side 12L, and then the pair of short side walls 14 facing each other are similarly mounted. It is rotated to stand on the upper end of the short side support side 12S. At this time, the assembly protrusion 14T of the short side wall 14 is fitted into the assembly hole portion 13H of the long side wall 13. Finally, the pair of strips 20 facing each other are rotated inward of the main body 11, and the fitting portion 40 of the strips 20 is fitted into the receiving portion 30 of the short side wall 14. At this time, the convex portion 31 of the receiving portion 30 is accommodated inside the fitting hole 41 through the fitting opening 43 of the fitting portion 40.

In the assembled main body 11, the inner surfaces of the long side walls 13 are arranged at both ends of the pair of long side walls 13 facing each other in a state of being in contact with the ends of the short side walls 14. As a result, the long side wall 13 is restricted from rotating inward of the main body 11. Further, at both ends of the pair of long side walls 13 facing each other, the assembly protrusions 14T of the short side wall 14 are fitted into the assembly holes 13H of the long side wall 13. As a result, the long side wall 13 is restricted from rotating outward from the main body 11. Therefore, in the assembled main body 11, each long side wall 13 is restricted from rotating in both the inward and outward directions of the main body 11, and stands vertically on the long side support side 12L. It is fixed.

On the other hand, at both ends of the pair of short side walls 14 facing each other, the assembly protrusions 14T of the short side wall 14 are fitted into the assembly hole portion 13H of the long side wall 13 from the inside to the outside of the main body 11 to form the short side wall 14. The outer surface of the long side wall 13 is arranged in contact with the inner surface of the long side wall 13. As a result, the short side wall 14 is restricted from rotating outward from the main body 11. Further, the fitting portion 40 of the strip main body 21 is fitted into the receiving portion 30 of the short side wall 14, and the inner surface of the short side wall 14 is arranged in a state of being in contact with the end surface of the strip 20. As a result, the short side wall 14 is restricted from rotating inward of the main body 11. Therefore, in the assembled main body 11, when the strip 20 is located at the covering position, each short side wall 14 is restricted from rotating in either the inner or outer direction of the main body 11 and is short. It is vertically fixed on the side support side 12S.

Further, when the assembled main body 11 is used by being stacked in multiple stages, the main body 11 located on the upper side is the upper edge of the long side wall 13 and the short side wall 14 of the main body 11 located on the lower side. It is placed on the upper edge. At this time, a gap is formed between the lower surface of the bottom wall 12 of the main body 11 located on the upper side and the strip rotating portion 22 of the main body 11 located on the lower side. Similarly, a gap is also formed between the lower surface of the bottom wall 12 of the main body 11 located on the upper side and the strip main body 21 of the main body 11 located on the lower side. Therefore, in a state where the main bodies 11 are stacked in multiple stages, the strip 20 of the main body 11 located on the lower side is in a non-contact state with respect to the upper main body 11.

When folding the assembled main body 11, first, the pair of strips 20 are directed upward from the inside of the main body 11 while releasing the fitting between the fitting portion 40 and the receiving portion 30. And rotate. Next, after rotating the pair of short side walls 14 inward of the main body 11 by 90 degrees, the pair of long side walls 13 are rotated 90 degrees inward of the main body 11, thereby pairing with the pair of short side walls 14. The long side wall 13 of the above is folded. It is also possible to stack the folded main bodies 11 in multiple stages.

[Action]
Next, the operation of the assembled foldable transport container will be described. 5 and 6 are cross-sectional views showing a cross section of the receiving portion 30 and the fitting portion 40 of the assembled foldable transport container cut along the extending direction of the long side wall 13.

As shown in FIG. 6, in the assembled foldable transport container, the fitting portion 40 of the strip 20 abuts on the bottom surface of the receiving portion 30 or receives an external force inward of the main body 11 to hit the container. In contact, further rotation of the main body 11 inward is restricted. Further, in the fitting portion 40 of the strip plate 20, further displacement of the short side wall 14 in the longitudinal direction is regulated by the groove side surface of the receiving portion 30. According to the fitting of the receiving portion 30 and the fitting portion 40, the position of the fitting portion 40 with respect to the receiving portion 30 is positioned in the longitudinal direction and the height direction of the short side wall 14.

Further, the convex portion 31 of the short side wall 14 is housed inside the fitting hole 41 of the strip plate 20. The upper portion 32 of the convex portion 31 is in a state of not protruding from the fitting hole 41, and the protrusion 33 of the convex portion 31 is separated from the protrusion 44 of the fitting portion 40 in the extending direction of the long side wall 13 and fitted. The engaging groove 45 of the recess 40 faces the engaging groove 45 of the long side wall 13 in the extending direction. The relative positions of the protrusion 33 of the receiving portion 30 and the protrusion 44 of the fitting portion 40 are also less likely to shift in the longitudinal direction and the height direction of the short side wall 14.

Here, when each short side wall 14 of the main body 11 containing the contents is grasped and the foldable transport container is carried by hand in this state, the main body 11 under the load of the contents is twisted. Each short side wall is deformed so that each short side wall 14 bends inward of the main body 11. When each short side wall 14 is deformed in this way, the distance between the short side walls 14 is reduced even in the vicinity of the short side wall 14, and as a result, an external force that reduces the length of the strip 20 is applied to the covering position. It acts to rotate the strip 20 located in the open position.

On the other hand, as shown by the alternate long and short dash line in FIG. 7, when each short side wall is deformed so that each short side wall 14 bends inward of the main body 11, the convex portion 31 of the short side wall 14 is deformed due to this deformation. It is displaced inward of the main body 11. That is, the convex portion 31 of the short side wall 14 enters the engaging groove 45 facing the long side wall 13 in the extending direction, and the protrusion 33 of the short side wall 14 is displaced above the protrusion 44 of the strip 20. As a result, the rotation of the strip 20 is suppressed through the engagement between the protrusion 33 and the protrusion 44 before the strip 20 located at the covering position rotates toward the open position. Then, when the foldable transport container is carried by hand, it is possible to prevent the strip 20 at the covering position from being displaced to the open position.

Further, as shown in FIG. 8, in the assembled foldable transport container, the fitted portion 42 of the strip 20 is fitted with the fitting portion 34 of the short side wall 14. As described above, the change in the distance between the pair of short side walls 14 is smaller in the longitudinal direction of the short side walls 14 as the portion closer to the long side wall 13 and the strip rotating portion 22. In this respect, the fitting between the fitted portion 42 and the fitting portion 34 is realized on the side of the strip rotating portion 22 rather than the engagement between the protrusion 33 and the protrusion 44. Therefore, the fitting between the fitted portion 42 and the fitting portion 34 is a protrusion in response to a reduction in the distance between the pair of short side walls 14 and an increase in the distance between the pair of short side walls 14. It is less affected than the engagement of 33 with the protrusion 44, and it is also possible to maintain these fits.

As described above, according to the above embodiment, the effects listed below can be obtained.
(1) In a state where the short side wall 14 bends inward of the main body 11, the protrusion 44 of the strip 20 is located below the protrusion 33 of the short side wall 14. Therefore, when the foldable transport container is carried by hand, the displacement of the strip 20 at the covering position to the open position is suppressed through the engagement between the protrusion 44 and the protrusion 33.

(2) The displacement of the strip 20 at the covering position to the open position is further suppressed through the fitting of the fitted portion 42 of the strip 20 and the fitting portion 34 of the short side wall 14.

(3) The fitting between the fitted portion 42 and the fitting portion 34 is realized on the side of the strip rotating portion 22 rather than the engagement between the protrusion 33 and the protrusion 44. Therefore, the fitting between the fitted portion 42 and the fitting portion 34 is not easily affected by the reduction or expansion of the distance between the pair of short side walls 14, and these fittings can be maintained. It is also possible.

(4) The fitting of the receiving portion 30 and the fitting portion 40 makes it difficult for the relative positions of the protrusions 33 and 44 to shift in the height direction or the lateral direction of the strip 20. As a result, it is possible to more accurately obtain the effect according to the above (1).

(5) The fitting portion 34 is a recess recessed on the inner surface of the short side wall 14, and the protrusion 33 has a size that fits in the receiving portion 30 and does not protrude from the inner surface of the short side wall 14. Therefore, when the content is taken out from the main body 11, it is possible to prevent the content from being caught by the protrusion 33 or the content from being caught by the fitting portion 34.

The above embodiment can be modified and implemented as follows.
[Strip 20]
-It is also possible to embody the size of each strip 20 so that the pair of strips 20 covers the entire opening of the main body 11.
The opening position of the strip 20 is a position where the strip 20 is oriented upward of the main body 11 to open the opening of the main body 11, and the contents are stored in the main body 11 and the contents from the main body 11 are opened. From the viewpoint of increasing the ease of taking out, it is preferable that the strip 20 and the long side wall 13 are parallel to each other.

The configuration of each strip rotating portion 22 can be embodied in a thin hinge connecting the long side wall 13 and the strip 20. If the shaft support portion 13S of the long side wall 13 pivotally supports the rotation shaft 22A of the strip 20, it is easy to secure a wide rotation range of the strip 20, and compared with the thin hinge. It is also possible to increase the strength of the strip rotating portion 22.

[Receiving section 30]
-The height of the receiving portion 30 can be different from the height of the shaft branch portion 13S. For example, when the thickness of the fitting portion 40 is larger than the thickness of the strip rotating portion 22, the height of the receiving portion 30 is preferably larger than the height of the shaft support portion 13S.

The order in which the receiving portion 30 and the fitting portion 34 are arranged is not limited to the order of the strip rotating portion 22, the fitting portion 34, and the receiving portion 30 in the longitudinal direction of the short side wall 14, but the strip rotating portion 22. , The receiving portion 30 and the fitting portion 34 can also be embodied in this order. At this time, the order in which the fitting portion 40 and the fitted portion 42 are arranged is embodied on the side of the strip rotating portion 22, the fitting portion 40, and the fitted portion 42.
The change in distance between the pair of short side walls 14 described above is small in the vicinity of the long side wall 13 and large in the middle of the short side wall 14 in the longitudinal direction. The change in the distance between the pair of short side walls 14 is the displacement of the protrusion 33 in the extending direction of the long side wall 13, and the larger the displacement, the larger the range of engagement between the protrusion 33 and the protrusion 44. .. Therefore, from the viewpoint of securing a large range of engagement between the protrusion 33 and the protrusion 44 and thereby suppressing the rotation of the strip 20, as described in the above embodiment, the strip rotating portion 22 is fitted. It is preferable that these are located in the order of the unit 34 and the receiving unit 30.

The size of the receiving portion 30 is not limited to the entire thickness direction of the short side wall 14 at the upper end of the short side wall 14, but is, for example, only a part of the short side wall 14 in the thickness direction on the inner surface of the short side wall 14. It can also be a connected depression. At this time, the fitting portion 40 of the strip 20 is located inside the main body 11 with respect to the outer surface of the short side wall 14, and the strip 20 at the covering position is located inside the main body 11 with respect to the outer surface of the short side wall 14. It fits in.

The receiving portion 30 may be a convex portion protruding upward at the upper end of the short side wall 14. At this time, the end portion in the longitudinal direction of the strip 20 is provided with a recess into which the receiving portion 30 is fitted as a fitting portion. The receiving portion 30 is provided with, for example, an engaging portion protruding inward on the top surface of the convex portion or the side surface of the convex portion, and the fitting portion into which the receiving portion 30 is fitted is a main body on the inner surface of the concave portion. It is provided with an engaged part that protrudes outward.
-Also, for example, the receiving portion 30 can be a recess surrounded by four sides at the upper end of the short side wall 14. At this time, the end portion in the longitudinal direction of the strip 20 is provided with a downwardly projecting portion to be fitted into the receiving portion 30 as a fitting portion. The receiving portion 30 is provided with, for example, an engaging portion protruding inward on the inner surface of the concave portion or the bottom surface of the concave portion, and the fitting portion fitted into the receiving portion 30 is on the outer surface of the convex portion of the main body. It has an engaged part that protrudes outward.

[Engagement part]
The relative position of the protrusion 33 and the protrusion 44 is such that the protrusion 44 is below the protrusion 33 not only in the state where the external force acts on the short side wall 14 but also in the state where the external force is released from the short side wall 14. It is also possible to have a positional relationship.
As described in the above embodiment, if an external force acts on the short side wall 14 and the protrusion 33 is located above the protrusion 44, the external force is released from the short side wall 14. The engagement between the protrusion 33 and the protrusion 44 is also released. Therefore, rotating the strip 20 at the covering position to the open position and rotating the strip 20 at the open position to the covering position smoothly regardless of the engagement between the protrusion 33 and the protrusion 44. It is also possible to proceed.

The position of the protrusion 33 can be embodied at a position different from that of the receiving portion 30 on the inner surface of the short side wall 14. At this time, the position of the protrusion 44 is also a position different from the fitting portion 40 in the end surface of the strip 20, and in a state where the strip 20 is located at the covering position, the extending direction of the long side wall 13. It is a position facing the protrusion 33. If the short side wall 14 is provided with the protrusion 33 and the strip 20 is provided with the protrusion 44, the receiving portion 30 and the fitting portion 40 can be omitted from the foldable transport container. ..

The shape of the engaging portion is not limited to a hemispherical shape, and can be embodied in a plate shape or a brim shape protruding inward of the main body along the extending direction of the long side wall 13. At this time, the shape of the engaged portion is appropriately selected according to the shape of the engaging portion, and the engaging portion is in a state where an external force that bends the short side wall 14 inward of the main body 11 acts. Any shape may be used as long as it has a portion located below.
The short side wall 14 can also include a plurality of engaging portions arranged in the longitudinal direction of the short side wall 14. At this time, the strip 20 is provided with one engaged portion for each engaging portion.

[Fitting portion]
The shape of the fitting portion 34 is not limited to a hemispherical shape that is recessed toward the outside of the main body 11, and can be embodied in a wedge shape that is recessed toward the outer and lower sides of the main body 11, for example. At this time, the end surface of the strip 20 in the longitudinal direction includes a convex fitted portion 42 protruding outward in the longitudinal direction.

The fitting portion 34 can be embodied as a hemispherical convex portion protruding inward of the main body 11. At this time, the end face of the strip 20 in the longitudinal direction includes a concave fitted portion 42 that is recessed inward in the longitudinal direction.
The short side wall 14 can also include a plurality of fitting portions 34 arranged in the longitudinal direction of the short side wall 14. At this time, the strip 20 includes one fitting portion 42 for each fitting portion 34.

[Wall wall]
-The folded form of each side wall is appropriately changed according to the dimensions of the side wall, and is not limited to the above configuration. For example, in a configuration in which the height of the long side wall 13 is longer than half the length of the short side wall 14 in the longitudinal direction, the other long side wall 13 is folded on one long side wall 13. Further, when the sum of the height of the long side wall 13 and the length of the strip 20 in the lateral direction is equal to or half the length of the short side wall 14 in the longitudinal direction, it is folded. It is also possible to further reduce the size of the state.

It is also possible that the long side wall 13 functions as the second side wall and the short side wall 14 functions as the first side wall. That is, the side wall to which the strip 20 is connected can be the short side wall 14. The dimensions and shape of the main body 11 are not particularly limited as long as the main body 11 has a bottomed square box shape. The above-mentioned problem that the strip 20 at the covering position rotates to the open position when the foldable transport container is carried by hand is a foldable transport container in which each side wall is easily deformed, that is, each side wall. This is a problem that is particularly likely to occur in a foldable transport container that is thin and lightweight. Therefore, the effect according to the above (1) to (3) is particularly remarkable in the foldable transport container in which the thickness of each side wall is thin and the weight is reduced.

-The strip 20 can also be configured to be self-supporting in the open position.
The foldable transport container may further include a lock member 50 (see FIG. 1) on the outer surface of the short side wall 14. The lock member 50 has a function of restricting the rotation of the erected short side wall 14. The lock member 50 includes a pair of elastic pieces 51 extending toward the horizontal ribs on the outer surface of the short side wall 14. The pair of elastic pieces 51 have a line-symmetrical shape centered on a vertical line passing through the center of the short side wall 14 in the longitudinal direction, and each elastic piece 51 has a vertical line as the lower portion of the elastic piece 51. It has a shape with a small distance, a so-called inverted C shape. The lock member 50 is configured to be displaceable between a lock position and a non-lock position below the lock position, and the left and right elastic pieces 51 included in the lock member 50 are engaged with the horizontal ribs included in the short side wall 14. Is urged to the lock position by. Then, the user applies an external force that opposes the urging force of the elastic piece 51 to the lock member 50, and the lock member 50 is displaced to the non-lock position, so that the regulation by the lock member 50 is released and the short length is erected. The side wall 14 becomes rotatable.

The above-described embodiment and the technical idea derived from the modified example are described below.
[Appendix 1]
The upper end of each of the second side walls further includes a receiving portion that is recessed downward.
The strip is further provided with fitting portions protruding in the extending direction of the first side wall at both ends of the first side wall in the extending direction, and the fitting portion is such that the strip is located at the covering position. In the state, it fits into the receiving part,
The receiving portion includes the engaging portion.
The fitting portion includes the engaged portion.
Foldable transport container.

According to the configuration described in Appendix 1, the fitting portion provided by the strip plate includes an engaged portion, and in the direction along the upper end of the second side wall, the fitting portion and the fitting portion are fitted to each other. 2 Positioned on the side wall. Then, the engaging portion provided on the second side wall and the engaged portion provided on the strip plate are less likely to be displaced in the direction intersecting the extending direction of the first side wall. As a result, it is possible to more accurately obtain the effect according to the above (1) due to the displacement of the engaging portion in the extending direction of the first side wall.

[Appendix 2]
The engaged portion is separated from the lower part of the engaged portion in a state where the strip is located at the covering position and the external force on each of the side walls is released.
The foldable transport container according to Appendix 1 above.

When the strip in the open position is rotated to the covering position, and when the strip in the covering position is rotated to the open position, the external force on each side wall is released. According to the configuration described in Appendix 2, the engaged portion is separated from the lower part of the engaging portion in the state where the external force on each side wall is released. Therefore, when the strip in the open position is rotated to the covering position or the strip in the covering position is rotated to the open position, the engaging portion and the engaged portion are engaged with each other. It is possible to prevent the movement from being hindered.

[Appendix 3]
The fitting portion is a recess having a hemispherical shape that is recessed toward the outside of the main body on the inner surface of the second side wall.
The fitted portion is a convex portion having a hemisphere protruding outward in the extending direction at the end surface of the strip in the extending direction.
Foldable transport container.

According to the configuration described in Appendix 3 above, since the fitting portion having a hemispherical shape and the fitting portion having a hemispherical shape are provided, the strip plate in the open position can be rotated to the covering position. When the strip plate at the covering position is rotated to the open position, the fitting portion and the fitted portion can be smoothly fitted and released.

11 ... Main body, 12 ... Bottom wall, 12L ... Long side support side, 12S ... Short side support side, 13 ... Long side wall, 13H ... Hole, 13R ... Side wall rotating part, 13S ... Shaft support, 14 ... Short side wall, 14R ... Side wall rotating part, 14T ... Assembly protrusion, 20 ... Band plate, 21 ... Band plate body, 22 ... Band plate rotating part, 22A ... Rotating shaft, 30 ... Receiving part, 31 ... Convex part, 32 ... Upper part , 33 ... protrusion, 34 ... fitting part, 40 ... fitting part, 41 ... fitting hole, 42 ... fitting part, 43 ... fitting opening, 44 ... protrusion, 45 ... engaging groove.

Claims (2)

It includes a bottom wall having a rectangular peripheral edge, a first side wall erected on a pair of first side walls on the peripheral edge, and a second side wall erected on a pair of second side walls on the peripheral edge. A foldable transport container having a main body having a bottomed box shape, and each side wall is foldable via a side wall rotating portion for folding the side wall inward at the lower end of each side wall. And
A strip extending in the extending direction of the first side, which is rotatably connected to the first side wall via a strip rotating portion having a rotating shaft extending in the extending direction. The strip plate provided with a coating position oriented inward to cover a part of the opening of the main body and an open position oriented upward of the main body to open the opening.
With the strip located at the covering position, the strip is located below the upper end of each side wall.
Each of the second side walls is provided with an engaging portion protruding inward.
The strip has an engaged portion protruding outward of the main body, and an external force acts on the strip so that the strip is located at the covering position and the second side wall is bent inward of the main body. In this state, the engaged portion includes a portion located below the engaging portion .
The upper end of each of the second side walls further comprises a receiving portion that is recessed downward.
The strip is further provided with fitting portions protruding in the extending direction at both ends in the extending direction, and the fitting portion is fitted into the receiving portion in a state where the strip is located at the covering position.
The receiving portion includes a convex portion protruding upward from the bottom surface of the receiving portion.
The fitting portion partitions a space having a fitting opening on the bottom surface of the fitting portion, and as the fitting portion fits into the receiving portion, the convex portion is accommodated in the space.
The engaging portion is a protrusion protruding inward in the convex portion.
The engaged portion is a foldable transport container which is a protrusion protruding inward of the fitting opening at the fitting opening. It includes a bottom wall having a rectangular peripheral edge, a first side wall erected on a pair of first side walls on the peripheral edge, and a second side wall erected on a pair of second side walls on the peripheral edge. A foldable transport container having a main body having a bottomed box shape, and each side wall is foldable via a side wall rotating portion for folding the side wall inward at the lower end of each side wall. And
A strip extending in the extending direction of the first side, which is rotatably connected to the first side wall via a strip rotating portion having a rotating shaft extending in the extending direction. The strip plate provided with a coating position oriented inward to cover a part of the opening of the main body and an open position oriented upward of the main body to open the opening.
With the strip located at the covering position, the strip is located below the upper end of each side wall.
Each of the second side walls is provided with an engaging portion protruding inward.
The strip has an engaged portion protruding outward of the main body, and an external force acts on the strip so that the strip is located at the covering position and the second side wall is bent inward of the main body. In this state, the engaged portion includes a portion located below the engaging portion, the strip is located at the covering position, and the external force on each side wall is released. The engaged portion is separated from the lower part of the engaged portion.
Each of the second side walls further includes a fitting portion having a step in the extending direction of the first side.
The strip is provided with fitted portions capable of fitting with the fitting portion at both ends of the first side in the extending direction, and the fitted portion is the strip with respect to the engaged portion. Fitted with the fitting portion in a state where the strip is located at the rotating portion side and the strip is located at the covering position.
Foldable type transportation container.

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