JP2018177239A - Foldable transport container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a foldable transport container capable of suppressing displacement of a band plate at a covering position to an open position when transporting the foldable transport container by hand.SOLUTION: A foldable transport container in which each side wall is configured to be foldable includes a band plate 20 extending in an extending direction of a long side wall. The band plate 20 is rotatably connected to the long side wall through a band plate rotating portion having a rotating shaft extending in the extending direction, and is displaced to a covering position oriented inward to cover a part of an opening of a main body and an opening position oriented above the main body to open the opening. Each of short side wall includes a protrusion 33 having steps in the extending direction. The band plate 20 includes a protrusion 44 having steps in the extending direction at both ends of the extending direction. In state where the band plate 20 is position at the covering position and an external force acts to deflect the short side wall inwardly of the main body, the protrusion 44 is positioned below the protrusion 33.SELECTED DRAWING: Figure 6

Description

  The present invention relates to a collapsible transportable container configured to be foldable.

  A foldable carrying container of this kind comprises, for example, a body having a bottomed box shape. The main body includes a bottom wall having a rectangular plate shape, a pair of mutually opposing short side walls erected at the periphery of the bottom wall, and a pair of mutually opposing long side walls erected at the periphery of the bottom wall Prepare. Each short side wall and each long side wall are configured to be foldable via a side wall pivoting portion for folding the side wall inward of the main body. The collapsible carrying container further comprises a strip for covering the opening of the body. A strip is formed in the opening of the main body, and is a strip for displacing a part of the opening of the main body to a covering position covered by the strip and an open position which is oriented above the main body to open the opening of the main body It is pivotally connected to the short side wall via a pivoting portion (see, for example, Patent Document 1).

Unexamined-Japanese-Patent No. 2003-205938

When holding the long side walls of the main body containing the contents and holding the foldable carrying container by hand in this state, the load of the contents contained in the main body causes the main body to twist, 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 also shrinks in the vicinity of the short side walls, and as a result, an external force that reduces the length of the strip is located at the covering position The strip is pivoted to the open position. Such pivoting of the strip is also a problem that is particularly likely to occur in foldable transport containers in which the long side walls are easily deformed, i.e., foldable transport containers in which the thickness of each long side wall is thin.
An object of the present invention is to provide a collapsible conveyance container capable of suppressing displacement of a band plate at a covering position to an open position when carrying the collapsible conveyance container by hand.

  A collapsible carrying container for solving the above problems comprises a bottom wall having a rectangular peripheral edge, a first side wall erected on a pair of first sides of the peripheral edge, and a pair of first side walls at the peripheral edge. The body having a bottomed box shape having a second side wall erected on two sides, and the side wall pivoting portion for folding the side wall at the lower end of each side wall inward of the body; It is a collapsible carrying container in which each side wall is configured to be foldable. The foldable carrying container is a band plate extending in the extending direction of the first side, and is rotated on the first side wall via a band plate rotating portion having a rotation axis extending in the extending direction. The strip which is movably connected and displaced to a covering position which is oriented inwards and covers a portion of the opening of the body, and an open position which is oriented above the body and which opens the opening. And the band plate is positioned lower than the upper end of each side wall in the state where the band plate is positioned at the covering position, and the inward projecting engagement portion is provided to the second side wall And the band plate includes an engaged portion projecting outward of the main body, the band plate is positioned 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 causes the second side wall to bend inward of the main body acts on the pair of second side walls, a part of the engaged portion provided in the band plate is engaged with the second side wall. Located below the joint. Therefore, before the strip positioned at the covering position is pivoted toward the open position, the engaged portion of the strip and the engaging portion of the second side wall are engaged with each other. Rotation is suppressed. As a result, when the folding transport container is carried by hand, displacement of the strip in the covering position to the open position is suppressed.

  In the collapsible transportable 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 band plate extends in the extending direction of the first side. At the both ends, the fitted portion capable of being fitted with the fitting portion, the fitted portion is located on the side of the band plate rotating portion with respect to the portion to be engaged, and the band plate is the covering It may be configured to be fitted to the fitting portion in a state of being positioned.

  According to the above configuration, when the folding type transport container is carried and carried by hand, the fitting portion provided in the second side wall and the fitting portion provided in the band plate are fitted, and the band plate is rotated. It is suppressed further. The change in the distance between the second side walls due to the above-mentioned external force is smaller as the portion is closer to the first side wall, that is, as the portion closer to the strip rotating portion is smaller. In this respect, the fitting of the fitting portion and the fitting portion is realized on the side of the band plate rotating portion rather than the engagement of the engaging portion and the fitting portion. Therefore, the fitting between the fitting portion and the fitting 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 fitting portion. It is also possible to maintain the fit of the

  In the collapsible transport container, the upper end of each of the second side walls further includes a receiving portion recessed downward, and the band plate is a fitting that protrudes in the extending direction at both ends in the extending direction. The insertion portion is further provided, and the insertion portion is fitted to the receiving portion in a state where the band plate is positioned at the covering position, and the receiving portion is a convex portion protruding upward from the bottom surface of the receiving portion The fitting section defines a space having a fitting opening on the bottom surface of the fitting section, and the protrusion section is accommodated in the space as the fitting section fits in the receiving section. The engagement portion may be a protrusion that protrudes inward at the convex portion, and the engaged portion may be a protrusion that protrudes inward of the insertion opening at the insertion opening.

  According to the above configuration, in the state in which the band plate is in the covering position, the fitting portion provided in the band plate is fitted in the receiving portion provided in the second side wall. The insertion portion of the strip has a shape that protrudes in the extending direction of the first side wall, and the receiving portion of 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 band plate is positioned in the direction along the upper end of the second side wall, that is, in the direction intersecting the extending direction of the first side wall, by the fitting of the receiving portion and the fitting portion. And since the above-mentioned engaging part and engaged part are included in these receiving part and fitting part, the position of an engaging part and the position of an engaged part are the extension of the 1st side wall. It becomes difficult to shift in the direction crossing the direction. As a result, it is also possible to more appropriately obtain the above-described 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 view structure of a folding-type conveyance container. The perspective view which shows the perspective view structure of a folding-type conveyance container in which a strip is located in an open position. The top view which shows the long side wall and the planar structure in the both ends of a strip. The perspective view which shows the perspective view structure which looked at the end of the short side wall from diagonally upward. The perspective view which shows the perspective view structure which looked at the edge of the strip from diagonally downward. Sectional drawing which shows the effect | action of the protrusion of a short side wall, and the protrusion of a strip. The effect | action figure which shows an effect | action with the protrusion of a short side wall, and the protrusion of a strip. Sectional drawing which shows an effect | action with the fitting part of a short side wall, and the to-be-fitted part of a strip.

  One embodiment of a collapsible carrier 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 collapsible transportable container in the assembled state.

[Main unit 11]
As FIG. 1 shows, the main body 11 which comprises a folding-type conveyance container has a bottomed rectangular box shape. The main body 11 includes a bottom wall 12 made of a synthetic resin having a rectangular peripheral edge. The periphery of the bottom wall 12 is provided with a pair of long side support sides 12L having substantially square pole shapes opposed to each other and a pair of short side support sides 12S having substantially square pole shapes opposed to each other. The main body 11 has a pair of long side walls 13 made of synthetic resin vertically supported at the upper ends of the pair of long side support sides 12L, and a pair of synthetic resin vertically supported at the upper ends of the pair of short side support sides 12S. And the short side wall 14 of the 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 sum of 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 is provided with a plurality of side wall rotation portions 13R, 14R. The lower end of the long side wall 13 is pivotally mounted on the long side support side 12L rotatably inward of the main body 11 via the side wall rotation portions 13R, that is, foldable inward of the main body 11 There is. The lower end of the short side wall 14 is pivotally mounted on the short side support side 12S rotatably inward of the main body 11 via each side wall rotation portion 14R, that is, foldable inward of the main body 11 There is. The long side support side 12L is an example of a first side, and the short side support side 12S is an example of a second side. The long side wall 13 is an example of a first side wall, and the short side wall 14 is an example of a second side wall.

  Both ends in the extending direction of the long side wall 13 are provided with a plurality of assembly holes 13 H penetrating in the extending direction of the long side wall 13. Both longitudinal ends of the short side wall 14 are provided with a plurality of assembling protrusions 14T that project outward along the extension direction of the long side wall 13. The assembling protrusions 14T of the short side wall 14 are fitted into the assembling holes 13H of the long side wall 13 one by one. The rotation of the main body 11 outward is restricted along with the fitting of the erected long side walls 13 and the erected short side walls 14 with the assembly hole 13H and the assembly projection 14T. Further, the erected long side walls 13 and 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 13H and the assembly projection 14T.

[Strip 20]
The upper end of the long side wall 13 is provided with a plurality of pivoting portions 13S having a concave shape which is cut downward. The respective pivot 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 plate 20 includes a strip plate main body 21 having a strip shape extending in the extending direction of the long side wall 13. The longitudinal length of the strip plate body 21 is substantially equal to the distance between the outer surfaces of the pair of short side walls 14. The length in the short direction of the strip plate main body 21 is shorter than 1⁄3 of the distance between the inner surfaces of the pair of long side walls 13.

  The band plate 20 includes a plurality of band plate pivoting portions 22 protruding from the band plate main body 21. Each strip plate pivoting portion 22 is arranged in the extending direction of the long side wall 13 at a predetermined interval. Each strip plate pivoting portion 22 has a shape projecting from one end face extending in the longitudinal direction of the strip plate main body 21 toward the upper end of the long side wall 13. The distance between the adjacent strip plate pivoting portions 22 is substantially equal to the distance between the pivoting portions 13S adjacent to each other.

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

  FIG. 3 is a plan view of the collapsible carrying container as viewed from above, showing a strip 20 with a long side wall 13 and a pair of short side walls 14 (left half) and a part of the strip 20 To remove the long side wall 13 and the short side wall 14 (right half).

  As shown in FIG. 3, each longitudinal end of the strip plate body 21 is provided with one fitting portion 40 that protrudes in the longitudinal direction of the strip plate body 21. The upper end of each short side wall 14 is provided with one receiving portion 30 having a concave shape which is cut downward. The height of the receiving portion 30 is substantially the same as the height of the bearing portion 13S, and is larger than the thickness of the strip main body 21. In the state where the band plate 20 is located at the covering position, the receiving unit 30 accommodates the fitting portion 40 and restricts the band plate 20 to further rotate inward of the main body 11. Further, with the strip 20 positioned at the covering position, the uppermost portion of the strip 20 is positioned 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 positioned at the covering position, the strip 20 is further restricted from pivoting 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. Located inside the And in the state where the main body 11 of the other conveyance container is stacked on the main body 11, a gap between the strip rotating part 22 of the lower foldable conveyance container and the bottom wall 12 of the upper main body 11 Thus, it is possible to prevent the band plate 20 and the band plate pivoting part 22 from being damaged by stacking.

[Receiving unit 30]
FIG. 4 is a perspective view of a longitudinal end of the short side wall 14 as viewed obliquely from above, and is an enlarged view of a perspective view of the receiving portion 30. As shown in FIG.
As FIG. 4 shows, the receiving part 30 has the concave shape which notched the upper end of the short side wall 14 downward. The receiving portion 30 is a groove sandwiched by a pair of groove side surfaces aligned in the longitudinal direction of the short side wall 14. The bottom surface of the receiving portion 30 is provided with one convex portion 31 protruding upward. The convex portion 31 has a substantially L shape when viewed from the direction opposite to the inner surface of the short side wall 14. The lower portion of the convex portion 31 is connected to one groove side of the receiving portion 30, and extends from one groove side to the other groove side. 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 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 on the inner surface of the protrusion 31 that protrudes inward of the main body 11 along the extending direction of the long side wall 13. The protrusion 33 is located in the middle in the height direction of the protrusion 31 and has a hemispherical shape protruding inward of the main body 11. The protrusion 33 is separated from the bottom surface of the receiving unit 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 by which the protrusion 33 protrudes is such that the protrusion 33 does not protrude from the receiving portion 30. The protrusion 33 is an example of the engaging portion.

  The inner surface of the short side wall 14 includes one hemispherical fitting portion 34 recessed in the extending direction of the long side wall 13. The longitudinal end of the short side wall 14 is provided with the assembling 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 in the height direction of the fitting portion 34 is substantially equal to the position in the height direction of the protrusion 33. That is, in the inner surface of the short side wall 14, the fitting portion 34 is on the end side of the short side wall 14 with respect to the receiving portion 30, and at a position substantially equal to the receiving portion 30 in the height direction. A step is formed which is recessed in the extending direction of the long side wall 13.

[Fitting 40]
FIG. 5 is a perspective view of the end in the longitudinal direction of the strip plate 20 as viewed obliquely from below, showing an enlarged perspective view of the fitting portion 40. As shown in FIG.
As shown in FIG. 5, each longitudinal end of the strip 20 is provided with a single 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 to 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 is provided with the fitting hole 41 penetrating the fitting portion 40 in the height direction in a state where the fitting portion 40 is fitted to the receiving portion 30, that is, in a state where the band plate 20 is positioned at the covering position. . The insertion hole 41 is an example of a space partitioned by the insertion portion 40, and defines the insertion opening 43 on the bottom surface of the insertion portion 40. The insertion hole 41 has an opening that cuts out a part of the insertion portion 40 in the lateral direction of the strip 20 and is connected to the insertion opening 43. In the longitudinal direction of the short side wall 14, the length of the insertion opening 43 is approximately 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 of the fitting opening 43 from the fitting opening 43. The protrusion 44 is provided with an inclined surface which protrudes in the extending direction of the long side wall 13 as it goes upward from the insertion opening 43 with the strip 20 in the covering position. The fitting portion 40 includes an engaging groove 45 extending in the height direction above the protrusion 44 in a state where the fitting portion 40 is fitted to the receiving portion 30. In the longitudinal direction of the short side wall 14, the width of the engagement 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 engagement groove 45 is larger than the amount of protrusion of the protrusion 33. The protrusion 44 is an example of the engaged portion.

  The end face in the longitudinal direction of the strip 20 is provided with a single fitted portion 42 having a hemispherical shape that protrudes in the extending direction of the strip 20. The to-be-fitted portion 42 is positioned on the side of the strip plate rotating portion 22 with respect to the fitting portion 40 in the end face in the longitudinal direction of the strip plate 20 and forms a step projecting 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 in a state where the band plate 20 is located at the covering position.

[Assembly of folding container]
When assembling the collapsible transport container, first, the pair of opposing long side walls 13 is rotated 90 degrees to stand on the upper end of the long side support side 12L, and then the pair of opposing short side walls 14 is similarly formed. It is turned to stand on the upper end of the short side support side 12S. At this time, the assembly projection 14T of the short side wall 14 is fitted into the assembly hole 13H of the long side wall 13. Finally, the pair of opposing strip plates 20 is pivoted inward of the main body 11, and the fitting portion 40 of the strip plate 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 insertion hole 41 through the insertion opening 43 of the insertion portion 40.

  In the main body 11 in the assembled state, the inner surfaces of the long side walls 13 are disposed in contact with the ends of the short side walls 14 at both ends of the pair of long side walls 13 facing each other. Thus, the long side wall 13 is restricted from pivoting inward of the main body 11. Further, at both ends of the pair of long side walls 13 opposed to each other, the assembly projection 14T of the short side wall 14 is fitted in the assembly hole 13H of the long side wall 13. Thus, the long side wall 13 is restricted from rotating outward of the main body 11. Therefore, in the main body 11 in the assembled state, each long side wall 13 is rotationally restricted in any of 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 opposing short side walls 14, the assembly protrusions 14 T of the short side walls 14 are fitted into the assembly holes 13 H of the long side walls 13 from the inside to the outside of the main body 11. Is disposed in contact with the inner surface of the long side wall 13. Thus, the short side wall 14 is restricted from pivoting outward of the main body 11. Further, the fitting portion 40 of the band plate main body 21 is fitted to the receiving portion 30 of the short side wall 14, and the inner surface of the short side wall 14 is disposed in contact with the end face of the band plate 20. This restricts the short side wall 14 from pivoting inward of the main body 11. Therefore, in the assembled state of the main body 11, when the strip 20 is in the covering position, each short side wall 14 is rotationally restricted in any of the inward and outward directions of the main body 11, It is vertically fixed on the side support side 12S.

  When the main body 11 in the assembled state 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 of the main body 11 located on the lower side, and the short side wall 14 Placed on the upper edge of the At this time, a gap is formed between the lower surface of the bottom wall 12 of the main body 11 positioned on the upper side and the strip plate pivoting portion 22 of the main body 11 positioned on the lower side. Similarly, 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 band plate main body 21 of the main body 11 located on the lower side. Therefore, in a state in which the main bodies 11 are stacked in multiple stages, the strip 20 of the lower main body 11 is in a non-contact state with the upper main body 11.

  When the main body 11 in the assembled state is folded, the pair of band plates 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 first. Turn it. Then, after the pair of short side walls 14 are rotated 90 degrees inward of the main body 11, the pair of long side walls 13 is rotated 90 degrees inward of the main body 11, whereby the pair of short side walls 14 and the pair And fold the long side wall 13. It is also possible to stack the folded body 11 in multiple stages.

[Effect]
The operation of the assembled collapsible transport container will now be described. 5 and 6 are cross-sectional views showing the assembled receiving part 30 of the collapsible transportable container and the fitting part 40 cut along the extending direction of the long side wall 13.

  As shown in FIG. 6, in the assembled collapsible transport container, the fitting portion 40 of the band plate 20 abuts on the bottom surface of the receiving portion 30 or receives an external force inward of the main body 11. In contact, further inward rotation of the main body 11 is restricted. Further, in the fitting portion 40 of the band plate 20, the further displacement of the short side wall 14 in the longitudinal direction is restricted 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 accommodated inside the insertion hole 41 of the band plate 20. The upper portion 32 of the convex portion 31 does not protrude 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 engagement groove 45 of the lead-in portion 40 is opposed in the extending direction of the long side wall 13. The relative position between the projection 33 of the receiving portion 30 and the projection 44 of the fitting portion 40 is also difficult to shift in the longitudinal direction and the height direction of the short side wall 14.

  Here, when holding the short side walls 14 of the main body 11 containing the contents and holding the foldable carrying container by hand in this state, the main body 11 receiving the load of the contents is twisted. Each short side wall deforms so that each short side wall 14 bends inward of the main body 11. Such deformation of the respective short side walls 14 causes the distance between the short side walls 14 to shrink also in the vicinity of the short side walls 14 and as a result, an external force that causes the strip 20 to reduce its length Acts to turn the strip 20 located in the to the open position.

  On the other hand, as shown by the alternate long and two short dashes line in FIG. 7, when each short side wall is deformed such that each short side wall 14 bends inward of the main body 11, the convex portion 31 of the short side wall 14 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 opposed in the extending direction of the long side wall 13, and the protrusion 33 of the short side wall 14 is displaced above the protrusion 44 of the band plate 20. As a result, before the strip 20 located at the covering position is pivoted to the open position, the pivoting of the strip 20 is suppressed through the engagement of the projection 33 and the projection 44. Then, when the foldable transport container is held and carried by hand, displacement of the strip 20 at the covering position to the open position is suppressed.

  Further, as shown in FIG. 8, in the assembled collapsible carrier, 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 wall 14 toward the portion closer to the long side wall 13 and the strip plate pivoting portion 22. In this respect, the fitting of the fitting portion 42 and the fitting portion 34 is realized on the side of the band plate pivoting portion 22 rather than the engagement of the protrusion 33 and the protrusion 44. Therefore, the fitting between the fitting portion 42 and the fitting portion 34 is a protrusion for reducing the distance between the pair of short side walls 14 or enlarging the distance between the pair of short side walls 14 or the like. It is less susceptible than the engagement of 33 and projections 44, and it is also possible to maintain their fit.

As mentioned above, according to the said embodiment, the effect listed below is acquired.
(1) In the state where the short side wall 14 is bent inward of the main body 11, the protrusion 44 of the band plate 20 is located below the protrusion 33 of the short side wall 14. Therefore, the displacement of the strip 20 in the covering position to the open position can be suppressed through the engagement between the projections 44 and 33 when the foldable transport container is carried and carried by hand.

  (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 of the fitted portion 42 and the fitting portion 34 is realized on the side of the band plate pivoting portion 22 rather than the engagement of the protrusion 33 and the protrusion 44. Therefore, with respect to the reduction or enlargement of the distance between the pair of short side walls 14, the fitting between the fitted portion 42 and the fitting portion 34 is not easily affected, and maintaining these fitting It is also possible.

  (4) The fitting between the receiving portion 30 and the fitting portion 40 makes it difficult to shift the relative position between the projection 33 and the projection 44 in the height direction or in the lateral direction of the band plate 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 that is recessed on the inner surface of the short side wall 14, and the protrusion 33 fits within the receiving portion 30 and does not protrude from the inner surface of the short side wall 14. Therefore, when the contents are taken out from the main body 11, the contents can be prevented from being caught by the protrusions 33 and the contents can be prevented from being caught by the fitting portion 34.

The above embodiment can be implemented with the following modifications.
[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 open position of the band plate 20 is a position where the band plate 20 is oriented above the main body 11 to open the opening of the main body 11, and the storage of the contents in the main body 11 or the contents from the main body 11 From the viewpoint of enhancing the ease of taking out, it is preferable that the strip 20 and the long side wall 13 be parallel to each other.

  The configuration of each strip plate pivoting portion 22 can be embodied as a thin hinge connecting the long side wall 13 and the strip plate 20. In addition, if the support 13S of the long side wall 13 is configured to pivotally support the pivot shaft 22A of the band plate 20, it is easy to secure a wide range of pivoting of the band plate 20, compared to a thin hinge. It is also possible to increase the strength of the strip plate pivoting portion 22.

[Receiving unit 30]
The height of the receiving unit 30 may be different from the height of the shaft support 13S. For example, when the thickness of the fitting portion 40 is larger than the thickness of the band plate pivoting portion 22, it is preferable that the height of the receiving portion 30 be larger than the height of the pivot portion 13S.

The order of arrangement of the receiving portion 30 and the fitting portion 34 is not limited to the order of the band plate rotating portion 22, the fitting portion 34, and the receiving portion 30 in the longitudinal direction of the short side wall 14. The receiving unit 30 and the fitting unit 34 can also be embodied in this order. At this time, the order of arrangement of the fitting portion 40 and the fitting portion 42 is embodied on the side of the band plate rotating portion 22, the fitting portion 40, and the fitting portion 42.
The change in the distance between the pair of short side walls 14 described above is small near the long side wall 13 and large in the middle of the short side wall 14 in the longitudinal direction. The change of the distance between the pair of short side walls 14 is the displacement of the projection 33 in the extending direction of the long side wall 13, and the larger the displacement amount, the larger the range in which the projection 33 and the projection 44 engage. . Therefore, from the viewpoint of securing a large range of engagement between the projections 33 and the projections 44 and thereby suppressing the rotation of the band plate 20, as described in the above embodiment, the band plate pivoting portion 22 engages with Preferably, these are located in the order of the portion 34 and the receiving portion 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, for example, only a part of the short side wall 14 in the thickness direction It is also possible to make it a concavity. At this time, the fitting portion 40 of the strip 20 is positioned inward of the main body 11 than the outer surface of the short side wall 14, and the strip 20 at the covering position is inwardly of the outer surface of the short side wall 14. Get stuck.

The receiving portion 30 may be a convex portion protruding upward at the upper end of the short side wall 14. Under the present circumstances, the longitudinal direction edge part of the strip 20 is equipped with the recessed part in which the receiving part 30 is engage | inserted as an insertion part. The receiving portion 30 includes, for example, an engaging portion projecting 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. And an outwardly projecting engaged portion.
Also, for example, the receiving portion 30 may be a recess at the upper end of the short side wall 14 and surrounded by four sides. Under the present circumstances, the end part of the longitudinal direction of the strip 20 is equipped with the downward convex part engage | inserted by the receiving part 30 as a fitting part. The receiving portion 30 includes, for example, an engaging portion projecting inward on the inner side surface of the concave portion or the bottom surface of the concave portion, and the fitting portion fitted into the receiving portion 30 corresponds to the outer surface of the convex portion. An outwardly projecting engaged portion is provided.

[Engagement part]
The relative position between the projection 33 and the projection 44 is not only in the state where an 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 relationship of position.
As described in the above embodiment, if the external force acts on the short side wall 14 and thereby the projection 33 is positioned above the projection 44, in the state where the external force is released from the short side wall 14, The engagement between the projection 33 and the projection 44 is also released. Therefore, pivoting the strip 20 in the covering position to the open position and pivoting the strip 20 in the opening position to the covering position can be performed smoothly regardless of the engagement between the projection 33 and the projection 44. It is also possible to proceed.

  The position of the projection 33 may be embodied in a position different from the receiving unit 30 in the inner surface of the short side wall 14. At this time, the position of the projection 44 is also a position different from the fitting portion 40 in the end face of the band plate 20, and in the state where the band plate 20 is positioned at the covering position, the extending direction of the long side wall 13 At a position facing the projection 33. If the short side wall 14 is provided with the projection 33 and the band plate 20 is provided with the projection 44, the receiving portion 30 and the fitting portion 40 can be omitted from the foldable conveyance container. .

The shape of the engaging portion is not limited to the hemispherical shape, but may be embodied in a plate shape or a bowl shape protruding inward of the main body along the extending direction of the long side wall 13. Under the present circumstances, the shape which a to-be-engaged part has is suitably selected according to the shape of an engaging part, and in the state to which the external force which bends the short side wall 14 inward of the main body 11 acts, an engaging part It is sufficient if it has a shape provided with a portion located below.
The short side wall 14 can also include a plurality of engaging portions aligned in the longitudinal direction of the short side wall 14. At this time, the band plate 20 includes one engaged portion in each engaging portion.

[Fitting portion]
The shape of the fitting portion 34 is not limited to the hemispherical shape recessed toward the outer side of the main body 11, and may be embodied, for example, in a bowl shape recessed downward to the outer side of the main body 11. Under the present circumstances, the end surface of the longitudinal direction of the strip 20 is equipped with the convex to-be-fitted part 42 which protruded toward the outward of the longitudinal direction.

The fitting portion 34 can be embodied as a hemispherical convex portion protruding inward of the main body 11. Under the present circumstances, the end surface of the longitudinal direction of the strip 20 is equipped with the concave-shaped to-be-fitted part 42 hollowed inward in the longitudinal direction.
The short side wall 14 may include a plurality of fitting portions 34 aligned in the longitudinal direction of the short side wall 14. At this time, the band plate 20 includes one fitted portion 42 in each fitting portion 34.

[Side wall]
-The form by which each side wall is folded is suitably changed according to the size of a side wall, and is not restricted to the above-mentioned composition. For example, in the configuration in which the height of the long side wall 13 is longer than half of the longitudinal length of the short side wall 14, the other long side wall 13 is folded on one long side wall 13. Also, if the sum of the height of the long side wall 13 and the length of the short side of the strip 20 is equal to the length of the short side wall 14 in the longitudinal direction, or if it is half the length It is also possible to achieve further miniaturization of the state.

  The long side wall 13 may function as a second side wall, and the short side wall 14 may function as a first side wall. That is, the side wall to which the strip plate 20 is connected may be the short side wall 14. And if it is a structure provided with the main body 11 which had bottomed square box shape, the dimension and shape of the main body 11 will not be specifically limited. The above-mentioned problem that the strip 20 at the covering position pivots to the open position when the folding transport container is carried by hand is the foldable transport container in which the side walls are easily deformed, that is, the side walls This problem is particularly likely to occur in the case of a collapsible carrying container in which the thickness of the container is thin and the weight reduction is achieved. Therefore, the effects according to the above (1) to (3) become particularly remarkable in the case of the foldable transport container in which the thickness of each side wall is thin and the weight reduction is achieved.

The band plate 20 can also be configured to be able to stand on its own in the open position.
The collapsible carrying container may further include a locking member 50 (see FIG. 1) on the outer surface of the short side wall 14. The lock member 50 has a function of restricting rotation of the erected short side wall 14. The lock member 50 includes a pair of elastic pieces 51 extending toward horizontal ribs provided 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. Has a small distance, a so-called reverse V shape. The lock member 50 is configured to be displaceable between the lock position and the non-lock position below the lock position, and the engagement between the left and right elastic pieces 51 provided on the lock member 50 and the horizontal rib provided on the short side wall 14 Is biased to the locked position. Then, the user applies an external force against the biasing force of the elastic piece 51 to the lock member 50, and the lock member 50 is displaced to the non-lock position, whereby the restriction by the lock member 50 is released and the erected short The side wall 14 becomes rotatable.

The technical ideas derived from the above-described embodiment and the modifications will be additionally described below.
[Supplementary Note 1]
The upper end of each of the second side walls further includes a receiving portion recessed downward.
The band plate further includes fitting portions protruding in the extending direction of the first side wall at both ends in the extending direction of the first side wall, and the band plate is positioned at the covering position in the fitting portion. Fit in the receiving part in the state,
The receiving portion includes the engaging portion.
The fitting portion includes the engaged portion.
Folding transport container.

  According to the configuration described in the above-mentioned Supplementary Note 1, the fitting portion provided in the band plate includes the engaged portion, and in the direction along the upper end of the second side wall, the fitting portion includes the fitting portion and the fitting portion. Positioned on 2 side walls. And it becomes difficult to produce position gap in the direction which intersects the extension direction of the 1st side wall with the engagement part with which the 2nd side wall is provided, and the engaged part with which a band plate is provided. As a result, it is possible to more appropriately obtain the effect according to the above (1) by the displacement of the engaging portion in the extending direction of the first side wall.

[Supplementary Note 2]
The engaged portion is separated from the lower side of the engaging portion in a state where the band plate is located at the covering position and the external force on the side walls is released.
The foldable transport container described in the above-mentioned Appendix 1.

  When the band plate in the open position is rotated to the covering position, and when the band plate in the covering position is rotated to the opening position, the external force on each side wall is released. According to the configuration described in the above-mentioned Supplementary Note 2, in the state where the external force on each side wall is released, the engaged portion is separated from the lower side of the engaging portion. Therefore, when the band plate in the open position is rotated to the covering position, or when the band plate in the covering position is rotated to the opening position, the engagement between the engaging portion and the engaged portion corresponds to these rotations. It is suppressed that it interferes with movement.

[Supplementary Note 3]
The fitting portion is a concave portion having a hemispherical shape recessed outward of the main body on the inner surface of the second side wall,
The fitting portion is a convex portion having a hemispherical shape that protrudes outward in the extending direction at an end face of the band plate in the extending direction.
Folding transport container.

  According to the configuration described in Supplementary Note 3, since the hemispherical-shaped fitting portion and the hemispherical-shaped fitted portion are provided, the strip in the open position is pivoted to the covering position. When the band plate at the covering position is pivoted to the open position, it is possible to smoothly fit or release the fitting part and the fitting part.

  11: body, 12: bottom wall, 12L: long side support side, 12S: short side support side, 13: long side wall, 13H: hole portion, 13R: side wall rotation portion, 13S: axial support portion, 14: short side wall, 14R: side wall rotation portion, 14T: assembly projection, 20: band plate, 21: band plate main body, 22: band plate rotation portion, 22A: rotation shaft, 30: receiving portion, 31: convex portion, 32: upper portion 33: projection 34: fitting portion 40: fitting portion 41: fitting hole 42: fitting portion 43: fitting opening 44: protrusion 45: engaging groove.

Claims (3)

A bottom wall having a rectangular peripheral edge, a first side wall erected on a pair of first sides in the peripheral edge, and a second side wall erected on a pair of second sides in the peripheral edge A collapsible carrying container comprising: a main body having a bottomed box shape, wherein the respective side walls are foldable at a lower end of each side wall via a side wall pivoting portion for folding the side wall inward of the main body And
A strip plate extending in the extending direction of the first side, which is pivotally connected to the first side wall via a strip plate pivoting portion having a pivoting axis extending in the extending direction; The cover plate is displaced in an inward direction to cover a part of the opening of the main body and an opening position which is directed to the upper side of the main body to open the opening.
The strip is positioned below the upper end of each side wall with the strip positioned at the covering position,
Each of the second side walls is provided with the inward projecting engagement portion,
The band plate includes an engaged portion protruding outward of the main body, and the external force acting on the band plate at the covering position and bending the second side wall inward of the main body acts on the band plate. In this state, the engaged portion includes a portion located below the engaging portion. Each of the second side walls further includes a fitting portion having a step in the extending direction of the first side,
The band plate includes, at both ends in the extending direction of the first side, a fitted portion that can be fitted with the fitting portion, and the fitted portion is the band plate with respect to the engaged portion. The foldable container according to claim 1, wherein the folding transport container is located on the rotating portion side and is fitted to the fitting portion in a state where the band plate is located at the covering position. The upper end of each of the second side walls further includes a receiving portion recessed downward.
The band plate further includes fitting portions protruding in the extending direction at both ends in the extending direction, and the fitting portion is fitted to the receiving portion in a state where the band plate is positioned at the covering position,
The receiving portion includes a convex portion protruding upward from the bottom surface of the receiving portion,
The fitting portion defines a space having a fitting opening on a bottom surface of the fitting portion, and the fitting portion accommodates the convex portion in the space as the fitting portion fits into the receiving portion.
The engagement portion is a projection that protrudes inward at the convex portion,
The collapsible container according to claim 1 or 2, wherein the engaged portion is a projection that protrudes inward of the insertion opening at the insertion opening.

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