JP2002120831A - Folding type conveying case - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a folding type conveying case which prevents damage to a container main body owing to a compression load acting on each side wall and which maintains smooth rotation relative to the bottom wall of each side wall. SOLUTION: The top face peripheral edge of the bottom wall 12 of the container main body 11 of a folding type carrying container is formed to have first and second protrusive support strips 21a and 21b. On the shaft receiving part 22 of the strips 21a and 21b, a rotary shaft 23 for a long side wall 13 and a short side wall 14 is pivoted rotatively. On the top end face of the strips 21a and 21b, an outside protrusive strip 25 is provided. In a condition where the main body 11 is assembled, the strip 25 touches the bottom end face of each side wall 13, 14 and supports a compression load. Between the shaft receiving part 22 and the rotary shaft 23, a gap 22a is formed. When each side wall 13, 14 rotates, the shaft 23 moves in the shaft receiving part 22 and makes a detour to avoid the outside strip 25.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a foldable transport container which can be stored and transported in a small and compact manner when not in use. More specifically, the present invention relates to a foldable transport container configured to easily perform a folding operation.

[0002]

2. Description of the Related Art Heretofore, as this type of foldable transport container, a foldable transport container comprising a container body formed in a bottomed rectangular box shape has been known. The container body of the foldable transport container has a bottom wall formed in a long rectangular plate shape, and a pair of opposed short and long side walls erected on the periphery of the bottom wall. Between each of the short and long side walls and the bottom wall, there is provided a rotating shaft and a rotating means including a bearing on which the rotating shaft is mounted. By this rotating means, each short side wall and long side wall can be rotated around the periphery of the bottom wall, and by rotating each side wall inward of the container body, the container body is folded, and in the folded state, It becomes small and compact.

When the container body is assembled, a pair of fitting portions are provided between each of the long side wall and the short side wall so as to be fitted to each other. The side wall and the short side wall are maintained in a state of being suspended from the peripheral edge of the bottom wall. Further, in this state, a chamfered portion is formed by chamfering the corner at the inner side lower end edge of each side wall, and the rotation of each side wall with respect to the bottom wall from the assembled state to the folded state is smooth. It is assumed.

[0004]

However, in the above-mentioned conventional foldable transport container, the area of the lower end surface of each side wall is reduced by the space provided with the chamfered portion in the assembled state, and the contact with the upper surface of the bottom wall is reduced. The area is also smaller. For this reason, for example, when a plurality of assembled container bodies are stacked up and down, etc., the compressive load acting on each side wall from above cannot be supported at the contact portions of each side wall and the bottom wall, and the rotating shaft and the bearing portion In addition, there is a problem that such a problem is likely to occur that the container body is distorted or damaged. Further, by reducing the space for providing the chamfered portion, the compressive load can be sufficiently supported by increasing the contact area of each side wall with the bottom wall. There has been a problem that the lower edge easily contacts the bottom wall, which may hinder the rotation of the side wall.

The present invention has been made by focusing on the problems existing in the prior art as described above. It is an object of the present invention to provide a foldable transport container capable of suppressing damage to the container body due to a compressive load acting on each side wall and maintaining smooth rotation of each side wall with respect to a bottom wall. Is to do.

[0006]

According to a first aspect of the present invention, there is provided a foldable transport container according to the first aspect of the present invention. A container body having a bottomed rectangular box shape having a pair of side walls respectively erected along a pair of side edges is provided, and the side walls are folded inwardly of the container body between the side walls and the bottom wall. A folding transport container configured to be capable of folding and assembling the container body by rotating each pair of side walls with respect to the bottom wall by providing a rotating means for
In the bottom wall or at least one pair of side walls, in a state where the container main body is assembled, a support protrusion capable of supporting a compressive load acting on the side wall, and in a state where the container main body is folded, the side wall is rotated. It is characterized in that a rotation assisting means is provided which makes it possible to suppress the contact of the support projection with the side wall or the bottom wall when opening.

A foldable transport container according to a second aspect of the present invention is characterized in that, in the first aspect of the present invention, the support projection is provided so as to extend along each side edge of the bottom wall. Is what you do.

[0008] The foldable transport container according to the third aspect of the present invention is the foldable transport container according to the first or second aspect,
The support protrusion is provided so as to protrude from an upper surface of a bottom wall in a state where the container body is assembled, and a tip thereof is brought into contact with a lower end surface of the side wall.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS (First Embodiment) A first embodiment of the present invention will be described below in detail with reference to the drawings.

As shown in FIGS. 3 (a) and 3 (b), the container body 11 constituting the foldable transport container is formed of a synthetic resin into a rectangular box with a bottom. Container body 11
Has a bottom wall 12 formed in the shape of a long square plate, and a pair of long side walls 13 and short side walls 14 erected along both long side edges and short side edges of the bottom wall 12, respectively. . A grip hole 27 for gripping the container body 11 is formed in the center of each of the short side walls 14 so as to penetrate in a horizontally long rectangular hole shape. Bottom wall 12
Has a first supporting ridge 21a and a second supporting ridge 21b on both long side edges and short side edges thereof. The first support ridge 21a and the second support ridge 21b are each formed in a quadrangular prism shape,
The container body 11 is erected so as to connect between the corners. The long side wall 1 is located above the first support ridge 21a.
3, the short side walls 14 are respectively supported at positions above the second support protrusions 21b.

As shown in FIGS. 2 (a) and 2 (b), a plurality of bearings 22 constituting a rotating means are provided at the upper ends of the first and second supporting ridges 21a and 21b at predetermined intervals. Is provided. These bearing portions 22 have a long side wall 13 and a short side wall 1.
Rotation shafts 23 constituting rotation means provided at lower ends of the rotation shafts 4 are rotatably mounted. First support ridge 2
The height of 1 a is formed substantially the same as the thickness of the long side wall 13, and the height of the second support ridge 21 b is substantially the same as the length of the long side wall 13 plus the thickness of the short side wall 14. Is formed. The container main body 11 is configured to be foldable by folding both short side walls 14 on the upper surface of the long side wall 13 in a state where both long side walls 13 are folded on the upper surface of the bottom wall 12.

As shown in FIGS. 4 (a) and 4 (b), on the outer surface of the long side wall 13, an engagement concave portion 31 having a rectangular shape is formed in the upper portion of the short side. A first restricting convex portion 32 projects from a lower end portion of the engaging concave portion 31, and a second restricting convex portion 33 having a quadrangular prism shape protrudes from an upper end portion. On the inner surface of the short side wall 14, a long rectangular plate-shaped regulating plate 41 protrudes from the upper end of the shorter side, and a regulating frame 42 protrudes from the lower end of the inner surface of the regulating plate 41 along the edge. Has been established.

In a state where the container body 11 is assembled, the regulating plate 41 is housed in the engaging concave portion 31 and the first regulating convex portion 32 is engaged in the regulating frame portion 42, so that the long side wall is formed. The outward rotation of the container body 11 of the short wall 13 and the short side wall 14 is restricted. Further, at the upper end of the regulating plate 41, an engaging hole 43 having a rectangular shape is formed at a position corresponding to the second regulating convex portion 33, and the second regulating convex portion 33 is inserted into the engaging hole 43. By being engaged, the outward rotation of the short side wall 14 of the container body 11 is restricted.

Pressing pieces 44 are formed at upper portions on both sides of the short side wall 14 by cutting the short side wall 14 into a U-shape. The pressing piece 44 is disposed between the regulating frame portion 42 and the engaging hole 43 so that the front end thereof is directed outward of the short side wall 14. An engagement projection 45 is provided so as to project. As shown by a two-dot chain line in FIG.
Is slightly elastically deformable outward and inward of the container body 11 about its base end. And the container body 1
1 is assembled, the tip surface of the pressing piece 44 is
The rotation of the long side wall 13 toward the inside of the container body 11 is restricted by contact with the inner surface of the container.

As shown in FIGS. 2 (a), 3 (a) and 3 (b), at the four corners of the bottom wall 12, the upper end surfaces of the first and second support projections 21a and 21b are provided. Is provided with an L-shaped movement restricting ridge 21c as viewed from above. Restriction notches 21d which can be engaged with the respective movement restricting ridges 21c in a state where the container body 11 is assembled are formed on both lower end sides of the long side wall 13 and the short side wall 14, respectively.
The engagement of the movement restricting ridge 21c and the restriction notch 21d restricts the lateral movement of the long side wall 13 and the short side wall 14.

As shown in FIGS. 2 (b) and 5 (a) and 5 (b), a pair of receiving recesses 24 each having a rectangular shape are formed on the outer side of the first supporting ridge 21a. Is provided.
A regulating plate 41 is accommodated in these accommodation concave portions 24 in a state where the container main body 11 is folded, and the folded container main body 11 has a flat plate shape without the short side wall 14 being lifted by the regulating plate 41. ing.

FIGS. 1 (a), 1 (b), 2 (a), 3
As shown in FIG. 5A and FIG.
On the outer edges of the upper end surfaces of the first and second support projections 21b, outer projections 25 as support projections project slightly upward so as to extend along the long side edge and the short side edge of the bottom wall 12. It is formed. The outer ridge 25 can hide the contents in the container body 11 from the outside. The long side wall 13 disposed at a position corresponding to the accommodation recess 24.
The inner edge of the lower end face of the
6 is formed to protrude slightly downward so as to extend along the inner side surface of the long side wall 13. As shown in FIG. 5 (b), the inner ridge 26 closes a gap 24 a formed by the outer ridge 25 being provided so as to avoid the accommodating recess 24, and the inner ridge 26 is accommodated in the container body 11. Things can be hidden from the outside.

As shown in FIG. 1B, in a state where the container body 11 is assembled, the lower end surface of the short side wall 14 is
5 is in contact with the upper end. As shown in FIG. 5B, the lower end surface of the long side wall 13 is in contact with the upper end of the outer ridge 25, and the lower end of the inner ridge 26 is the first support ridge 21a of the bottom wall 12. Is in contact with the upper end surface of the In this state, the compressive load acting on the side walls 13 and 14 from above is applied to the bottom wall 1 via the outer ridge 25 and the inner ridge 26.
The first and second support protrusions 21a and 21b support the first and second support protrusions 21a and 21b. Further, since the outer ridge 25 and the inner ridge 26 are provided so as to extend along each side edge of the bottom wall 12, a compressive load acting on a part of each of the side walls 13 and 14 is provided. Even in this case, the outer ridge 25 and the inner ridge 26
Can support a compressive load.

As shown in FIGS. 1 (a), 1 (b) and 5 (b), a gap 22a is provided between the bearing 22 and the rotating shaft 23, and the gap 22a is , 14 function as rotation assisting means for smoothly rotating. That is, as shown by a two-dot chain line in FIGS. 1B and 5B, when the side walls 13 and 14 are rotated, in the bearing portion 22 having the gap 22a, the rotating shaft 23 While sliding on the inner surface of the portion 22, the lower ends of the side walls 13, 14 are moved away from the upper ends of the first and second support projections 21a, 21b. For this reason, each side wall 1
The lower ends of the first and second supporting ridges 3 and 14
The a and 21b are pivoted largely around the upper ends.

The lower end of each of the side walls 13 and 14 is the first
And the upper ends of the second support ridges 21a and 21b are largely bypassed, so that the inner ridge 26 contacts the first support ridge 21a during the rotation and the outer protrusion of each of the side walls 13 and 14. Contact with the ridge 25 is prevented. Further, in this embodiment, the space for providing the gap 22a is large in order to facilitate the engagement between the movement regulating ridge 21c and the regulation notch 21d.

Next, the operation of the foldable transport container will be described below. Now, when the foldable transport container configured as described above is folded from the assembled state, first, as shown by a two-dot chain line in FIG. It is pressed outward to release the engagement between the engagement protrusion 45 and the long side wall 13. Subsequently, when the long side wall 13 is slightly pulled upward, the inner side ridge 26 is separated from the first support ridge 21a, and the long side wall 13 is separated from the outer side ridge 25.

In this state, one of the long side walls 13 is connected to the container body 1.
After turning inward of 1 and folding it on the upper surface of the bottom wall 12,
Similarly, the other long side wall 13 is folded on the bottom wall 12 and the upper surface of the one long side wall 13. Then, by rotating both short side walls 14 inward of the container main body 11 and folding them on the upper surfaces of both long side walls 13, the container main body 11 becomes flat as shown in FIGS. 2 (a) and 2 (b). It is folded small and compact, and transported and stored by stacking a plurality of them up and down.

On the other hand, in order to assemble the foldable transport container, first, while slightly pulling the pair of short side walls 14 shown in FIGS.
1 is turned outward. Then, the rotating shaft 2 of the short side wall 14
Reference numeral 3 denotes a position within the gap 22a from a position closer to the outside of the container body 11 shown in FIG. 1A, to a position closer to the inside of the container body 11 shown by a two-dot chain line in FIG. State. 90 ° while pulling the short side wall 14
When rotated, the rotating shaft 23 rotates while being displaced upward within the gap 22a, so that the short side wall 14 largely detours the upper end of the second support ridge 21b and moves the lower end surface to the outer side. It is rotated without contacting the ridge 25.
Thereafter, when the short side wall 14 is pushed downward, as shown by a solid line in FIG.
4, the short side wall 14 is supported on the second support ridge 21b. In this state, the short side wall 14 is restricted from further rotating outwardly of the container body 11 by the outer projection 25.

Next, when the pair of long side walls 13 are slightly pulled inward and rotated as they are outside the container body 11, as shown by a two-dot chain line in FIG. The driving shaft 23 moves, and the long side wall 13 becomes the first support ridge 21.
While largely bypassing the upper end of a, the lower end surface and the inner ridge 26 are rotated without making contact with the outer ridge 25 and the upper end surface of the first support ridge 21a. As shown in FIGS. 4A and 4B, the long side wall 13 presses the engaging projection 45 of the pressing piece 44 outward at a position substantially rotated by 90 °. get over.

At this time, after the first regulating protrusion 32 and the regulating frame 42 of each of the side walls 13 and 14 are engaged, the second regulating protrusion 33 and the engaging hole 43 are engaged, whereby the length is increased. Side wall 1
3 is displaced downward, and the outer ridge 25 and the inner ridge 26 come into contact with the lower end surface of the long side wall 13 and the upper end surface of the first support ridge 21a, respectively. In this state, the long side wall 13
The rotation of the container body 11 inward and outward is restricted, and is fixed in a state of being vertically suspended on the upper surface of the first support ridge 21a.
At the same time, the short side wall 1 is fixed by fixing the long side wall 13.
4 is fixed in a state of being suspended from the upper surface of the second supporting ridge 21b, and the container body 11 is assembled.

The foldable transport container with the container body 11 assembled is transported by gripping the grip holes 27 with both hands. The container body 11 of the foldable transport container can be vertically stacked in an assembled state, and the folded container body 11 is stacked on and under the assembled container body 11. You can also.

The effects exerted by the first embodiment will be described below. Outer ridges 25 are formed on the outer edges of the upper end faces of the first and second support ridges 21a and 21b so as to project slightly upward, and on the inner edges of the lower end faces of the long side walls 13, An inner ridge 26 is formed to project slightly downward.
Then, with the container body 11 assembled, each side wall 1
The lower end surfaces of the inner and outer protrusions 26 are in contact with the upper end surfaces of the first support protrusions 21 a of the bottom wall 12. Therefore, a compressive load acting on each of the side walls 13 and 14 from above is applied to the bearing portion 22.
Also, since it is supported by the bottom wall 12 via the outer ridge 25 and the inner ridge 26 without being applied to the rotating shaft 23, the bearing portion 22 and the rotation due to the compressive load acting on each of the side walls 13, 14 are formed. Damage to the container body 11 such as damage to the driving shaft 23 can be prevented.

Further, a gap 22a is provided between the bearing portion 22 and the rotating shaft 23, and the rotating shaft 23 is moved within the bearing portion 22 when each of the side walls 13, 14 is rotated.
Since the rotation centers of the side walls 13 and 14 are shifted, the outer ridge 25 and the inner ridge 26 are prevented from contacting the lower end surfaces of the side walls 13 and 14 and the upper end surface of the first support ridge 21a. Therefore, smooth rotation of the side walls 13 and 14 with respect to the bottom wall 12 can be maintained.

The outer ridge 25 and the inner ridge 26 are provided so as to extend along each side edge of the bottom wall 12 so that a compressive load acts on a part of each of the side walls 13 and 14. Even in this case, the outer ridge 25 and the inner ridge 26
Can effectively support the compressive load.

By providing the outer ridge 25 and the inner ridge 26, respectively, the side walls 13, 14 and the bottom wall 1 are provided.
The gap 24a formed between the two can be closed, and the contents in the container body 11 can be hidden from the outside.

The outer ridge 25 is connected to the first support ridge 21a.
And the outer wall of the upper end surface of the second supporting ridge 21b, so that the side walls 13 and 14 are erected above the first supporting ridge 21a and the second supporting ridge 21b. 11 can be prevented from pivoting outward and opening each other.

(Second Embodiment) Hereinafter, a second embodiment of the present invention will be described in detail with reference to the drawings. The description of the second embodiment will focus on the differences from the first embodiment.

As shown in FIGS. 6A and 6B, the container body 11 of the second embodiment has both short side walls 14 folded on the upper surface of the bottom wall 12 and both long side walls 13 long. It is configured to be folded on the upper surface of the side wall 13. Correspondingly, the first support ridge 21a is formed to have substantially the same height as the sum of the thickness of the short side wall 14 and the thickness of the long side wall 13, and the second support ridge 21b is Is formed at a height substantially the same as the thickness of the. An outer ridge 25 is provided on the outer edge of the upper end surface of each of the first and second support ridges 21a and 21b.
Is protruding. Also, the inner ridge 26 is omitted.

As shown in FIGS. 9A and 9B, the engaging concave portion 31 and the first regulating convex portion 32 are provided on both sides of the short side wall 14. Above the first restricting convex portion 32, an engaging protrusion 33a formed in an inverted L-shape in a flat cross section protrudes.
The proximal end 33c of the engagement protrusion 33a is provided so as to extend outward of the short side wall 14, and the distal end 33d is provided on the long side wall 13
Is provided so as to extend outward. Further, a gap is provided on the engagement recess 31 side of the base end portion 33c of the engagement projection 33a, and as shown by a two-dot chain line in FIG. 31 can be elastically deformed.

As shown in FIGS. 6B and 8, the regulating plates 41 are provided on both sides of the long side wall 13 and are accommodated in the engaging recesses 31 of the short side wall 14 so that the container body 11 can be moved. In the assembled state, the rotation of the short side wall 14 to the outside of the container body 11 is restricted. The accommodation recess 24 is formed in the second support ridge 21b corresponding to the regulation plate 41, and
The regulating plate 41 is accommodated in a state where 1 is folded. A regulating frame portion 42 is provided on the rear surface of the regulating plate 41 so as to protrude therefrom.
1 restricts the rotation of the long side wall 13 to the outside of the container body 11 in the assembled state.

As shown in FIGS. 9 (a) and 9 (b), on both sides of the long side wall 13, in a state where the container main body 11 is assembled, positions corresponding to the engagement projections 33a on the short side wall 14 are long rectangular columns. Is formed. As shown by the two-dot chain line in FIGS.
“a” is configured to be able to be pressed inward from the outside of the long side wall 13, and the tip 33 d of the engagement protrusion 33 a is pressed inward by the inner surface of the pressing piece 43 a pressed from the outside. .

The long side walls 13 located above and below the pressing piece 43a
A pair of upper and lower engaging projections 45 a formed in a substantially quadrangular prism shape are provided on the inner side surface of the long side wall 13 so as to extend inward of the long side wall 13. Further, one side surface of the engagement protrusion 45a provided near the center of the long side wall 13 is a tapered surface 45b formed in a tapered shape that becomes lower toward the center of the long side wall 13, and the engagement protrusion 33a is formed. The outer surface of the tip portion 33d can be smoothly slid. Further, the side surface of the engaging projection 45a facing the tapered surface 45b is configured such that when the container body 11 is assembled, the inner surface of the distal end portion 33d of the engaging projection 33a can be engaged and fixed. Engagement surface 45c.

As shown in FIG. 7, an urging projection 22b as a rotation assisting means is protruded from the inner surface on the outer side of the bearing portion 22. The urging projection 22b contacts the outer surface of the base 23a of the rotating shaft 23 when the container body 11 is assembled, as shown by a solid line in the figure, and as shown by a two-dot chain line in the figure, In the state where 11 is folded, the rotating shaft 2
The height of the third base 23a is adjusted so as not to contact the base 23a. When rotating the side walls 13 and 14, the corner 23b of the base 23a is slidably contacted with the urging projection 22b.

When folding the foldable transport container according to the second embodiment, first, the pressing piece 43a of the short side wall 14 is pressed.
Is pressed inward, as shown by the two-dot chain line in FIGS. 1A and 1B, the engagement projection 3
The tip 33d of 3a is pressed inward. As a result, elastic deformation is caused in the base end portion 33c of the engagement protrusion 33a, and the engagement state between the distal end portion 33d of the engagement protrusion 33a and the engagement surface 45c of the engagement protrusion 45a is released. Subsequently, both short side walls 14 are pivoted inward of the container body 11 to be folded on the upper surface of the bottom wall 12, and both long side walls 13 are folded on the upper surface of both short side walls 14. As shown in (b), the container body 11 is compactly folded into a flat plate shape.

On the other hand, when assembling the container body 11 in the folded state, first, both long side walls 13 shown in FIGS. After standing on the ridge 21a, the two short side walls 14 are similarly rotated to stand on the second support ridge 21b. At this time, as shown in FIG. 1 (b), the distal end 33d of the engagement projection 33a rides over the tapered surface 45b of the engagement projection 45a while sliding over the same, and is fixedly engaged with the engagement surface 45c. . In this state, the rotation of the short side wall 14 toward the inside of the container body 11 is restricted, and the restricting plate 41 controls the short side wall 1.
4 is restricted from rotating outward, and is suspended from the second support ridge 21b. At the same time, the rotation of the long side wall 13 to the outside and the inside of the container body 11 is also restricted, and the long side wall 13 is suspended from the first support ridge 21a, so that the container body 11 is assembled.

As shown by a two-dot chain line in FIG. 7, when the long side wall 13 and the short side wall 14 are rotated as described above, first, at the rotation shaft 23, first, the corner 2 of the base 23a is turned.
3b is in sliding contact with the urging projection 22b. At this time, the rotating shaft 23 is moved such that the lower ends of the side walls 13 and 14 are separated from the upper ends of the first and second support protrusions 21a and 21b. When the side walls 13 and 14 are rotated as they are, the side surface of the base 23a abuts on the end face of the urging projection 22b with the momentum when the corner 23b gets over the urging projection 22b, and the side walls 13 and 14 are rotated. 14 moves downward by its own weight.

Therefore, according to the second embodiment, each side wall 1
3 and 14 rotate without touching the outer protrusion 25 while the lower end of the first and second support protrusions 21a and 21b bypasses the upper end of the first and second support protrusions 21a and 21b without being pulled by hand. Can be done.

The present embodiment can be embodied with the following modifications. When the container main body 11 is assembled, for example, by adjusting the height of the movement restricting ridge 21c, the outer ridge 25 and the inner ridge 26 are connected to the lower end surfaces of the side walls 13, 14 and the first side.
You may comprise so that it may not contact the upper end surface of the support protrusion 21a. When a compressive load is applied to the side walls 13 and 14, the outer ridge 25 and the inner ridge 26 contact the lower end surfaces of the side walls 13 and 14 and the upper end surface of the first support ridge 21a. May be supported. In such a configuration, the outer ridge 25 and the inner ridge 26 are provided.
And the lower end surfaces of the side walls 13 and 14 and the first support ridge 21a.
By forming a gap between the upper end surface and the upper end surface, the rotation of the side walls 13 and 14 can be performed more easily.

The support protrusion is not limited to the outer protrusion 25 and the inner protrusion 26, and at least one protrusion from the lower end surface thereof extends in the thickness direction of the long side wall 13 and the short side wall 14. One of the protrusions may be used as a support protrusion, and the tip may be brought into contact with the upper end surfaces of the first support protrusion 21a and the second support protrusion 21b. Or, the first support ridge 21a
Alternatively, a protrusion as a support protrusion may be protruded from the upper end surface of the second support ridge 21b, and the tip may contact the lower end surfaces of the long side wall 13 and the short side wall 14. Further, projections formed in a columnar shape, a conical shape, a quadrangular prism shape, or the like are provided on at least one of the lower end surfaces of the side walls 13 and 14 and the upper end surfaces of the support protrusions 21a and 21b. It may be a unit.

A biasing projection 22b as shown in the second embodiment is provided in the bearing portion 22 of the container body 11 of the first embodiment.
May be provided. -In 2nd Embodiment, the inner side protrusion 26 may be provided in the inner edge of the lower end surface of each side wall 13 and 14, respectively. Alternatively, the outer protrusion 25 may be provided on the lower end surfaces of the side walls 13 and 14.

Further, a technical idea which can be grasped from the embodiment will be described below. (1) The folding transport container according to any one of claims 1 to 3, wherein the support projections are provided on two pairs of side edges of two pairs of side walls or a bottom wall. With this configuration, the compression load can be efficiently supported.

(2) In the state where the container main body is assembled, the supporting projection is provided so as to project from the lower end face of the side wall, and the tip thereof is brought into contact with the bottom wall. A foldable transport container according to any of the preceding claims. With this configuration, the contents in the container body can be hidden from the outside.

(3) With the container body assembled, an engaging recess is formed in the outer surface of one of the adjacent side walls, and the other is positioned so as to correspond to the engaging recess. A regulating plate protruding from the inner surface of the side wall of the container can be accommodated in the engagement recess, and the outward rotation of the container body of one of the side walls is regulated by the accommodation of the regulation plate in the engagement recess. The foldable transport container according to any one of claims 1 to 3, characterized in that: With this configuration, it is possible to effectively maintain a state in which each side wall is erected on the periphery of the bottom wall.

(4) The foldable transport container according to (3), wherein the container main body is folded, and an accommodation recess capable of accommodating the regulation plate is provided at a position corresponding to the regulation plate on the bottom wall. With this configuration, the container body can be folded into a flat plate shape.

(5) The foldable transport container according to (2) or (4), wherein the support projection is provided near the inner surface of the side wall at a position corresponding to the accommodation recess. With such a configuration, the contents in the container body can be effectively hidden from the outside.

[0051]

As described above in detail, according to the present invention, the following effects can be obtained. According to the first aspect of the invention, it is possible to suppress damage to the container body due to a compressive load acting on each side wall, and to maintain smooth rotation of each side wall with respect to the bottom wall.

According to the invention described in claim 2, according to claim 1
In addition to the effects of the invention described in (1), the compression load can be effectively supported by the entire support projection. According to the invention described in claim 3, in addition to the effects of the invention described in claim 1 or 2, it is possible to hide the contents in the container body from the outside.

[Brief description of the drawings]

FIG. 1A is a cross-sectional view showing a rotating shaft and a bearing portion of a container body of a first embodiment in a folded state, and FIG.
FIG. 4 is a cross-sectional view showing a rotating shaft and a bearing of the container body of the first embodiment in an assembled state.

FIG. 2A is a plan view showing a state where the container body of the first embodiment is folded, and FIG. 2B is a front view showing a state where the container body of the first embodiment is folded.

FIG. 3A is a front view showing a state where the container body of the first embodiment is assembled, and FIG. 3B is a side view showing a state where the container body of the first embodiment is assembled.

FIG. 4A is a partially cutaway front view showing a state in which the container main body of the first embodiment is assembled, and FIG. 4B is a partial view showing a state in which the container main body of the first embodiment is assembled. The side view which expanded.

5A is a perspective view showing a storage recess of the container main body in a folded state, and FIG. 5B is a cross-sectional view showing the storage recess of the container main body in an assembled state.

FIG. 6A is a plan view showing a state where the container body of the second embodiment is folded, and FIG. 6B is a front view showing a state where the container body of the second embodiment is folded.

FIG. 7 is a sectional view showing a rotating shaft and a bearing of a container body according to a second embodiment.

FIG. 8 is a front view showing a state where the container body of the second embodiment is assembled.

FIG. 9A is a partially cutaway front view showing a state in which the container main body of the second embodiment is assembled, and FIG. 9B is a partially broken front view showing a state in which the container main body of the second embodiment is assembled. FIG.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 11 ... Container main body, 12 ... Bottom wall, 13 ... Long side wall as a side wall, 14 ... Short side wall as a side wall, 22 ... Bearing part which comprises a rotation means, 22a ... Gap which comprises a rotation auxiliary means, 2
2b: an urging projection constituting the rotation assisting means; 23, a rotating shaft constituting the rotating means; 25, an outer projection as a support projection; 26, an inner projection as a support projection.

Claims (3)

[Claims] A bottomed rectangular box-shaped container body having a bottom wall formed in a square plate shape and a pair of side walls erected along a pair of opposite side edges of the bottom wall, respectively. Along with the side walls and the bottom wall, there is provided a rotating means for folding each side wall inward of the container body, and the container body is folded by rotating each pair of side walls with respect to the bottom wall. A collapsible transport container configured to be assemblable, wherein the bottom wall or at least one pair of side walls has a support protrusion capable of supporting a compressive load acting on the side wall in a state where the container body is assembled. A foldable type provided with rotation assisting means capable of suppressing contact of the support protrusion with the side wall or the bottom wall when the side wall is rotated and opened in a state where the container body is folded. Transport container. 2. The foldable transport container according to claim 1, wherein the support protrusion is provided so as to extend along each side edge of the bottom wall. 3. The container according to claim 1, wherein the support projection is provided so as to protrude from an upper surface of a bottom wall in a state where the container body is assembled, and a tip thereof is brought into contact with a lower end surface of the side wall. 4. The foldable transport container according to claim 1.