JP6795187B2 - Folding container - Google Patents

Description

The present invention relates to a folding container used for transporting articles and the like.

Conventionally, as a container for accommodating an article requiring temperature control, a container made of a foamed synthetic resin is known. Further, in order to improve durability, there is a technique of mounting an inner container made of foamed synthetic resin integrally formed in a box shape inside an outer container made of non-foamed synthetic resin integrally formed in a box shape. (For example, refer to Patent Document 1 and the like.).

Japanese Unexamined Patent Publication No. 10-17031

When the technique of Patent Document 1 is adopted, the strength of the container is ensured by the outer container, and the heat retention performance is ensured by the inner container. However, the thickness of the container is the sum of the thickness of the outer container and the thickness of the inner container, and the outer size of the container is increased by that amount, which reduces the transportation and storage efficiency of the container. There is a concern that this may lead to a decrease in the internal volume and the efficiency of transporting and storing articles. Further, as compared with a foldable container in which the side wall portion can be folded above the bottom wall portion, there is a concern that the transportation and storage efficiency of the container in a state where no article is stored is significantly inferior.

The present invention has been made to solve the above-exemplified problems and the like, and an object of the present invention is to provide a folding container which has heat retention performance and can improve transportation and storage efficiency. is there.

Hereinafter, each means suitable for solving the above object and the like will be described separately for each item. In addition, the action and effect peculiar to the corresponding means will be added as necessary.

Means 1. The bottom wall component, which has a rectangular plate shape in a plan view,
An upright position that stands above each side of the bottom wall component and a lay that is folded toward the center of the bottom wall component, corresponding to each side of the bottom wall component. A container body having a side wall portion rotatably provided between the positions and
In a folding container composed of a foamed synthetic resin and provided with a side wall heat insulating member mounted on the inner surface side of the side wall portion.
The bottom wall component and the side wall are made of non-foamed synthetic resin.
The side wall portion includes a side wall insulation accommodating portion for accommodating at least a part of the side wall heat insulating member in the thickness direction of the side wall portion.
The side wall portion is configured to be displaceable between the upright position and the laying position while the side wall heat insulating member is attached to the side wall portion.
The bottom wall constituent portion includes a bottom wall portion having a substantially rectangular plate shape, and a base portion that projects upward along each side side portion of the bottom wall portion.
Each of the base portions includes a plurality of bearing portions that pivotally support the plurality of shaft portions provided on the side wall portions.
The base portion is formed by connecting a pair of first base portions provided along a pair of side sides of the bottom wall portion and both ends of the pair of first base portions, respectively. It is provided with a pair of second bases provided along the side edges of the bottom wall.
The side wall portion includes a pair of first side wall portions connected to each of the first base portions and a pair of second side wall portions connected to each of the second base portions.
The bearing portion of the first base portion is located above the bearing portion of the second base portion, and is located above the bearing portion.
By setting the pair of the second side wall portions above the bottom wall portion and setting the laying position, the first side wall portion can be set as the laying position above the second side wall portion that is set as the laying position. In possible configurations
The first side wall portion includes a locking piece that is elastically deformable in the thickness direction of the first side wall portion, and the second side wall portion that is provided at the tip end portion of the locking piece and is in an upright position. With a locking projection that abuts and supports the inner surface of the
The portion of the side wall portion where the locking piece is provided has a two-layer structure including an outer wall portion and an inner wall portion provided at a predetermined distance from each other in the thickness direction of the side wall portion.
The locking piece is a folding container characterized in that it is composed of a portion surrounded by a substantially U-shaped slit provided in the inner wall portion .

According to the means 1, the strength of the folding container is ensured by the container body made of non-foamed synthetic resin, and the heat insulating property and heat retention of the folding container are enhanced by the side wall heat insulating member made of foamed synthetic resin. Can be done. Further, since the side wall portion is configured as a foldable container that can be displaced between the upright position and the laying position, the foldable state is set so that all the side wall portions are laid down in the unused state when no articles are stored. As a result, the transportation and storage efficiency of the container in the unused state can be dramatically improved. In particular, since the side wall can be displaced to the laid position with the side wall heat insulating member attached to the side wall, when the folded container in the assembled state with all the side walls in the upright position is put into the folded state. , It is not necessary to remove the side wall heat insulating member. For this reason, the workability when assembling and folding the folding container is improved, and the management of the folding container (side wall heat insulating member) when the folding container is stored in the folded state is made relatively easy. be able to.

Further, a side wall heat insulating accommodating portion is provided on the inner surface side of the side wall portion, and at least a part of the side wall heat insulating member can be accommodated in the thickness direction of the side wall portion. Therefore, the thickness of the "side wall of the folding container" including the side wall portion and the side wall heat insulating member can be made as thin as possible. Therefore, as the thickness of the side wall of the folding container becomes thicker, the outer dimensions of the folding container become larger, which leads to a decrease in the transportation / storage efficiency of the folding container, or the internal volume of the folding container becomes smaller, so that the article It is possible to suppress situations such as a decrease in transportation and storage efficiency.

Furthermore, since the thickness of the side wall of the folding container is made as thin as possible, the side wall can be relatively smoothly (interfered with the bottom wall component or another side wall) even when the side wall heat insulating member is attached to the side wall. Not only can it be displaced to the laid position, but the height of the folded container can be made as low as possible.

Further, a configuration for preventing the second side wall portion, which is in the standing position, from tilting inward (hereinafter, also referred to as a “lock mechanism”) is configured by a locking piece and a locking projection provided on the first side wall portion. Has been done. Therefore, for example, as compared with the case where a lock mechanism is provided on the outer surface side of the second side wall portion so as to have a lock bar that appears and disappears from the side side portion of the second side wall portion, the lock mechanism is simplified and compact. Can be achieved. Therefore, the area of the side wall portion used for providing the lock mechanism can be reduced as much as possible, and instead, the area where the side wall heat insulating member is mounted can be secured as wide as possible. As a result, the heat insulating property can be dramatically improved.

It should be noted that "the first side wall portion in the upright position and the outer fall prevention means for preventing the tilt displacement of the second side wall portion to the outside may be provided". Further, "The first side wall portion includes a locking wall that abuts and supports the outer surface of the second side wall portion that is in the upright position, and the locking wall is an outward fall for the second side wall portion. It may be "configured as a preventive measure".

Further, since the locking piece is formed by forming a substantially U-shaped slit in the inner wall portion, the configuration of the locking piece can be simplified. On the other hand, there is a concern that the heat insulating property may be deteriorated due to the formation of the slit penetrating the inner wall portion. On the other hand, in the present means 1 , an outer wall portion is provided on the outer side of the inner wall portion provided with the locking piece, and the inner wall portion and the outer wall portion are provided between the slit and the outer space of the folding container. An area (room) surrounded by can be formed. Therefore, it is possible to avoid a situation in which the inner space of the folding container and the outer space of the folding container are directly communicated with each other through the slit, and it is possible to suppress a decrease in heat insulating property. In addition, the outer wall portion can protect the locking piece.

Means 2 . The bottom wall component, which has a rectangular plate shape in a plan view,
An upright position that stands above each side of the bottom wall component and a lay that is folded toward the center of the bottom wall component, corresponding to each side of the bottom wall component. A container body having a side wall portion rotatably provided between the positions and
With a side wall heat insulating member composed of foamed synthetic resin and mounted on the inner surface side of the side wall portion.
In a folding container equipped with
The bottom wall component and the side wall are made of non-foamed synthetic resin.
The side wall portion includes a side wall insulation accommodating portion for accommodating at least a part of the side wall heat insulating member in the thickness direction of the side wall portion.
The side wall portion is configured to be displaceable between the upright position and the laying position while the side wall heat insulating member is attached to the side wall portion.
The bottom wall constituent portion includes a bottom wall portion having a substantially rectangular plate shape, and a base portion that projects upward along each side side portion of the bottom wall portion.
Each of the base portions includes a plurality of bearing portions that pivotally support the plurality of shaft portions provided on the side wall portions.
The base portion is formed by connecting a pair of first base portions provided along a pair of side sides of the bottom wall portion and both ends of the pair of first base portions, respectively. It is provided with a pair of second bases provided along the side edges of the bottom wall.
The side wall portion includes a pair of first side wall portions connected to each of the first base portions and a pair of second side wall portions connected to each of the second base portions.
The bearing portion of the first base portion is located above the bearing portion of the second base portion, and is located above the bearing portion.
By setting the pair of the second side wall portions above the bottom wall portion in the laying position, the first side wall portion can be set in the laying position above the second side wall portion set as the laying position. In possible configurations
The first side wall portion includes a locking piece that is elastically deformable in the thickness direction of the first side wall portion, and the second side wall portion that is provided at the tip end portion of the locking piece and is in an upright position. With a locking projection that abuts and supports the inner surface of the
The portion of the side wall portion where the locking piece is provided has a two-layer structure including an outer wall portion and an inner wall portion provided at a predetermined distance from each other in the thickness direction of the side wall portion.
A folding container characterized in that a gap heat insulating member made of a foamed synthetic resin is mounted between the inner wall portion provided with the locking piece and the outer wall portion.
Means 3. The folding container according to means 1, wherein a gap heat insulating member made of a foamed synthetic resin is mounted between the inner wall portion provided with the locking piece and the outer wall portion.

According to means 2 and 3, the heat insulating property of the area surrounded by the inner wall portion and the outer wall portion provided with the locking piece can be dramatically improved, and by providing the locking piece, in the peripheral portion thereof. Concerns about reduced heat insulation can be dispelled.

It is a perspective view which looked at the folding container in an assembled state from the top side. It is a perspective view which looked at the folding container in a folded state from the upper surface side. It is a perspective view for demonstrating the process of changing a folding container from a folded state to an assembled state. It is a perspective view including a part cross section of a folding container. It is a perspective view which shows the inner surface side of the long side side wall part which attached the long side side wall insulation member. It is a perspective view which shows the outer surface side of the side wall part on the long side side. It is a perspective view which shows the inner surface side of the side wall part on the long side side. It is a perspective view which shows the inner surface (the surface exposed to the inside of a folding container) side of the side wall insulation member of a long side side. It is a perspective view which shows the outer surface side of the long side side wall insulation member. It is a partial enlarged perspective view including a partial cross section of a long side side wall portion and a long side side side wall insulation member. It is a partially enlarged perspective view of the side wall portion on the long side. It is a perspective view of the short side side wall part to which the short side side side wall insulation member was attached. It is a perspective view which shows the outer surface side of the side wall part on the short side side. It is a perspective view which shows the inner surface side of the side wall part on the short side side. It is a perspective view which shows the inner surface (the surface exposed to the inside of a folding container) side of the side wall insulation member on the short side side. It is a perspective view which shows the outer surface side of the side wall insulation member on the short side side. It is a perspective view of the bottom wall component part which attached the bottom wall heat insulating member. It is a perspective view which shows the upper surface side of the bottom wall component part. It is a perspective view which shows the lower surface side of the bottom wall component part. It is a perspective view which shows the upper surface side of the bottom wall heat insulating member. It is a perspective view which shows the lower surface side of the bottom wall heat insulating member. It is sectional drawing of the bottom wall heat insulating member. It is a partially enlarged cross-sectional view when the folding container is cut in the horizontal direction at the position above the side wall portion on the short side side in the laying position. It is a perspective view which shows the folding container which was stacked. It is a partially enlarged sectional view when the stacked folding containers are cut up and down along the longitudinal direction of each folding container. It is a partially enlarged sectional view in the case where the stacked folding containers are cut up and down along the lateral direction of each folding container. It is a perspective view which includes a partial cross section of a folding container in another embodiment. It is a perspective view of the side wall portion of a long side side side | region which attached the long side side wall insulation member. It is a perspective view which shows the inner surface side of the side wall part on the long side side. It is a perspective view which shows the inner surface side of the long side side wall insulation member.

Hereinafter, one embodiment will be described with reference to the drawings. As shown in FIGS. 1 and 4, the foldable container 1 is composed of a container body 2 that can be assembled in a box shape that opens upward, a side wall heat insulating member 51 that is made of foamed polypropylene and is attached to the container body 2, and , The bottom wall heat insulating member 52 is provided.

The container body 2 has a bottom wall portion 4 having a substantially rectangular plate shape, a long side base portion 5 protruding upward from the bottom wall portion 4 along each long side portion of the bottom wall portion 4, and a bottom wall portion. With respect to the bottom wall component 3 (see FIG. 18) including the short side base portion 6 protruding upward from the bottom wall portion 4 along each short side portion of 4, and each long side base portion 5. Each of the long side side wall portions 7 is rotatably provided, and the short side side wall portion 8 is rotatably provided for each short side base portion 6. The bottom wall constituent portion 3, the long side side wall portion 7, and the short side side side wall portion 8 are made of non-foamed (solid) polypropylene.

Further, the side wall heat insulating member 51 is mounted on the inner surface side of the long side side wall portion 7 and the short side side wall portion 8, and the bottom wall heat insulating member 52 is mounted on the upper surface side of the bottom wall constituent portion 3. .. In the present embodiment, the long side base portion 5 constitutes the first base portion, the short side base portion 6 constitutes the second base portion, and the long side side wall portion 7 constitutes the first side wall portion. Then, the short side side wall portion 8 constitutes the second side wall portion.

As shown in FIGS. 1 to 3, the long side side wall portion 7 and the short side side side wall portion 8 have an upright position that is erected above the long side side base portion 5 and the short side base portion 6, respectively. It is folded above the bottom wall portion 4 and is configured to be rotatable and displaceable between the bottom wall portion 4 and the laying position extending substantially in parallel with the bottom wall portion 4. Further, as shown in FIG. 18 and the like, the protruding length of the long side base portion 5 from the bottom wall portion 4 is longer than the protruding length of the short side base portion 6 from the bottom wall portion 4, and is long. The formation position of the long side bearing portion 9 for rotatably supporting the side side wall portion 7 is also from the formation position of the short side bearing portion 10 for rotatably supporting the short side side wall portion 8. Is also located above. Further, each short side base portion 6 is provided so as to connect the inner surfaces of the pair of long side base portions 5 facing each other. In addition, as shown in FIGS. 1 and 3, the width of the long side side wall portion 7 is configured to be the same as the length of the long side base portion 5 in the longitudinal direction, and the width of the short side side side wall portion 8 is It has the same length as the length of the short side base portion 6 in the longitudinal direction.

Therefore, in the present embodiment, the folding container 1 in the assembled state in which all the long side side wall portions 7 and the short side side side wall portions 8 are in the upright position is provided with all the long side side wall portions 7 and the short side side wall portions 7. When the short side side wall portion 8 is in the folded state in which the short side side wall portion 8 is in the laid position, the long side side wall portion 7 is placed in the laid position side unless the pair of short side side wall portions 8 are first displaced to the laid position. It is impossible to displace (see FIG. 3). Then, as shown in FIG. 2, when the folding container 1 is in the folded state, the short side side wall portion 8 as the laying position overlaps (faces) the bottom wall portion 4 and is laid down. The long side side wall portion 7 is overlapped with the short side side side wall portion 8. In FIG. 3, for convenience, the illustration of the long side side wall portion 7 on the front side of the paper surface is omitted.

As shown in FIGS. 6 and 7, each of the long side side wall portions 7 includes a substantially flat plate-shaped long side base plate 11 forming an outer surface (a part of the outer peripheral surface) of the folding container 1 in the assembled state. Along the upper side of the long side base plate 11, the long side upper frame portion 12 and the long side upper frame portion 12 are provided so as to project inward (the inner peripheral side of the folded container 1 in the assembled state) from the long side base plate 11. A substantially T-shape that protrudes downward from the lower surface of the long side lower rib 13 that protrudes inward from the lower side of the side base plate 11 and the long side lower rib 13 and is pivotally supported by the long side bearing portion 9. The long side hinge portion 14 as the shaft portion, the pair of left and right long side side ribs 15 protruding inward from the side side portion of the long side base plate 11, and the tips of the long side side ribs 15. It is provided with a long side side rib 16 projecting laterally from the side.

As shown in FIG. 7, the long side upper frame portion 12 has a long side upper side rib 17 projecting inward from the upper side portion of the long side base plate 11 and a predetermined distance downward from the long side upper side rib 17. It is provided with a long side upper frame lower rib 18 provided so as to be separated from each other. The long side upper side rib 17 is formed so that the inner side portion of the long side side upper side rib 17 is cut out from the vicinity of one end portion to the vicinity of the other end portion in the lateral width direction of the long side side wall portion 7. A notch 19 is provided. Since the cutout portion 19 is provided, most of the lower rib 18 of the upper frame on the long side side is exposed upward. Further, a long side upper frame reinforcing rib 20 is provided to connect the lower surface of the long side upper side rib 17 and the upper surface of the long side upper frame lower rib 18. In the present embodiment, the long side upper frame lower rib 18, the long side lower rib 13, and the long side side rib 15 have the same protruding length from the long side base plate 11.

In addition, the long side side wall portion 7 is provided with a locking wall 21 projecting from the inner surface side portion of the long side side rib 16. Each of the locking walls 21 is provided with four insertion hole portions 22 that open in the central portion side in the lateral width direction of the side wall portion 7 on the long side side at a predetermined interval in the vertical direction. As shown in FIG. 6, in order to reinforce both side portions of the long side side wall portion 7, ribs and the like for connecting the outer surface of the long side side rib 16 and the long side side rib 15 are provided. ing.

Further, as shown in FIGS. 7 and 11, the tip of the long side upper frame lower rib 18 is located on the inner angle side of the boundary between each long side side rib 15 and the long side upper frame lower rib 18. An inner wall portion 23 that projects downward from the portion is provided. Each inner wall portion 23 extends substantially parallel to the long side base plate 11 and is connected to the long side side rib 16 so as to be flush with each other.

Further, in the present embodiment, the slit is formed by forming a substantially U-shaped slit in the inner wall portion 23 and the long side side rib 16 in the range from each inner wall portion 23 to the adjacent long side side rib 16. A locking piece 24 composed of a portion surrounded by the locking piece 24 and a locking projection 25 protruding inward from the tip end portion of the locking piece 24 are provided. In each locking piece 24, the central portion side in the lateral width direction of the long side side wall portion 7 is connected to the inner wall portion 23. Further, as shown in FIG. 10, the long side side rib 15 is omitted between the locking piece 24 and the long side base plate 11. Therefore, the locking piece 24 is configured to be elastically deformable in the thickness direction of the long side side wall portion 7. In addition, as shown in FIG. 11, the locking projection 25 includes a locking plate 26 protruding inward from the tip edge of the locking piece 24 substantially orthogonally, a locking plate 26, and a locking piece. It is provided with a triangular plate-shaped locking reinforcing portion 27 that connects to and from 24.

As shown in FIG. 10, the space between the locking piece 24 and the long side base plate 11 is configured to open laterally. On the other hand, of the inner wall portion 23, a wall portion is provided with respect to the side side portion and the lower side portion of the long side side wall portion 7 on the lateral width direction central portion side and the long side side base plate 11. Is blocked. In the present embodiment, the long side base plate 11 constitutes the outer wall portion.

As shown in FIGS. 13 and 14, each short side side wall portion 8 includes a substantially flat plate-shaped short side side base plate 31 forming an outer surface (a part of the outer peripheral surface) of the folding container 1 in the assembled state. Along the upper side of the short side base plate 31, the short side upper frame portion 32 is provided so as to project inward from the short side base plate 31, and the short side base plate 31 projects inward from the lower side. The short side lower rib 33, and the short side hinge portion 34 as a substantially T-shaped shaft portion that protrudes downward from the lower surface of the short side lower side rib 33 and is pivotally supported by the short side bearing portion 10. A pair of left and right short side side ribs 35 protruding inward from the side side portion of the short side base plate 31, and a short side side rib 36 protruding laterally from the tip of the short side side rib 35. It is provided with a return rib 37 projecting outward from the tip of the short side side rib 36.

As shown in FIG. 14, the short side upper frame portion 32 has a short side upper side rib 38 protruding inward from the upper side portion of the short side base plate 31 and a predetermined distance downward from the short side upper side rib 38. It is provided with a short side upper frame lower rib 39 provided so as to be separated from each other. Further, a short side upper frame reinforcing rib 40 is provided to connect the lower surface of the short side upper side rib 38 and the upper surface of the long side upper frame lower rib 18. In the present embodiment, the short side upper frame lower rib 39, the short side lower rib 33, and the short side side rib 35 have the same protruding length from the short side base plate 31. In addition, as shown in FIG. 13, the protruding length of the return rib 37 from the short side side rib 36 is shorter than the protruding length of the short side side rib 35 from the short side base plate 31.

Further, as shown in FIG. 13, the short side side wall portion 8 is short corresponding to the insertion hole portion 22 (see FIG. 3 and the like) provided in the locking wall 21 of the long side side side wall portion 7. Insertion protrusions 41 projecting from both sides of the outer surface of the side side wall portion 8 are provided. Each insertion protrusion 41 extends outward from the short side side rib 36 adjacent to the insertion base 42 provided so as to extend a part of the return rib 37 outward, and the insertion base portion. Of the 42, the short side side wall portion 8 is provided with an insertion assisting portion 43 connected to the surface on the lateral width direction central portion side, and has a substantially U-shaped cross section. In addition, in order to improve the strength of both side portions of the short side side wall portion 8, ribs (short) connecting each insertion assisting portion 43 with the short side side rib 35 and the short side side rib 36 are connected. The protrusion length from the side rib 36 is the same as the protrusion length of the return rib 37).

Then, by erecting the long side side wall portion 7 as shown in FIG. 3 and then erecting the short side side wall portion 8 as shown in FIG. 1, the insertion protrusion 41 is inserted into the insertion hole portion 22 and at the same time. The peripheral portion of the insertion protrusion 41 (the return rib 37 and the rib connecting the insertion auxiliary portion 43 and the short side side rib 35) is supported by the opening peripheral portion of the insertion hole portion 22. ing.

Further, immediately before the short side side wall portion 8 is set to the upright position, the side side portion (return rib 37; see FIG. 13) of the outer surface of the short side side side wall portion 8 is the locking projection 25 of the long side side side wall portion 7. Although it comes into contact with the locking reinforcing portion 27 (see FIGS. 4 and 5), the locking piece 24 is elastically deformed so that the short side side wall portion 8 can be displaced to the upright position as it is. Then, when the side wall portion 8 on the short side is displaced beyond the locking projection 25 to the upright position, the locking piece 24 returns to its original posture by its own elastic force, and the locking projection 25 (locking plate) 26) substantially abuts on the inner surface of the short side side wall portion 8 (short side side rib 36) to support the short side side wall portion 8 (prevent the short side side wall portion 8 from falling inward). ing.

The distance between the pair of short side base portions 6 is longer than twice the height (vertical width) of the short side side wall portions 8 (short side base plate 31). Therefore, as shown in FIG. 3, the heights of the laying positions of the pair of short side side wall portions 8 are aligned. Further, the distance between the pair of long side base portions 5 is slightly longer than twice the height (vertical width) of the long side side wall portions 7 (long side base plate 11). Therefore, as shown in FIG. 2, the heights of the laying positions of the pair of long side side wall portions 7 are aligned. Further, the upper side portion of the long side base portion 5 is located above the upper surface of the long side side wall portion 7 in the laid position.

By the way, on the inner surface side of the long side side wall portion 7 and the short side side side wall portion 8 of the present embodiment, the side wall heat insulating accommodating portion 53 accommodating the side wall heat insulating member 51 is provided. As shown in FIG. 7, the long side side wall portion 7 is the inner surface side of the long side side base plate 11, and the long side side upper frame portion 12 has the long side side upper frame lower rib 18 and the long side side. A region surrounded by the lower side rib 13 and the pair of left and right long side side ribs 15 is configured as the side wall heat insulating accommodating portion 53. Hereinafter, the side wall insulation accommodating portion 53 of the long side side wall portion 7 is also referred to as “long side side wall insulation accommodating portion 54”, and the long side upper frame lower rib 18 defining the outer circumference of the long side side wall insulation accommodating portion 54, The long side lower side rib 13 and the pair of left and right long side side ribs 15 are also referred to as "long side surrounding ribs 55". The space between the inner wall portion 23 and the long side base plate 11 and the long side side wall insulation accommodating portion 54 are partitioned by a wall portion (which constitutes a part of the long side surrounding rib 55). As shown in FIG. 8, the side wall heat insulating member 51 (hereinafter, also referred to as “long side side wall heat insulating member 56”) attached to the long side side wall portion 7 has a portion corresponding to the inner wall portion 23. It is shaped like a notch.

Further, as shown in FIG. 14, the short side side wall portion 8 is on the inner surface side of the short side side base plate 31, and is short with the short side upper frame lower rib 39 of the short side upper frame portion 32. A region surrounded by the side lower side rib 33 and the pair of left and right short side side ribs 35 is configured as the side wall heat insulating accommodating portion 53. Hereinafter, the side wall insulation accommodating portion 53 of the short side side wall portion 8 is also referred to as “short side side wall insulation accommodating portion 57”, and the short side upper frame lower rib 39 that defines the outer circumference of the short side side wall insulation accommodating portion 57, The short side lower side rib 33 and the pair of left and right short side side ribs 35 are also referred to as "short side surrounding ribs 58". Further, the side wall heat insulating member 51 mounted on the short side side wall portion 8 is also referred to as "short side side wall heat insulating member 59".

In addition, as shown in FIGS. 6 and 13, the long side base plate 11 and the short side base plate 31 penetrate in the thickness direction of the long side side wall portion 7 and the short side side side wall portion 8. It is configured in the form of a non-perforated plate with no holes. That is, the long side side wall portion 7, the long side side side wall insulation accommodating portion 54 provided on the inner surface side of the short side side wall portion 8, the short side side wall insulation accommodating portion 57, and the long side side side wall portion The hole portion that communicates with the outer surface side of the side wall portion 8 on the short side side 7 and the side wall portion 8 on the short side side is not formed.

Further, as shown in FIGS. 5, 12, 25, and 26, the long side side wall portion 7 and the short side side wall portion 8 have the long side side wall insulation accommodating portion 54 and the short side in the thickness direction. The depth of the side side wall heat insulating accommodating portion 57 (the length of the long side surrounding rib 55 and the length of the short side surrounding rib 58 protruding from the long side base plate 11 and the short side base plate 31) is long. The thickness of the side side wall heat insulating member 56 and the short side side wall heat insulating member 59 is substantially the same as or slightly deeper (longer) than that. That is, the long side side wall heat insulating member 56 and the short side side wall heat insulating member 59 are configured to fall within the thickness range of the long side side wall portion 7 and the short side side side wall portion 8. In the present embodiment, the long side side wall insulating member 56 and the short side side wall heat insulating member 59 are attached to the long side side wall portion 7 and the short side side wall portion 8, and the long side side side wall portion is attached. 7 and the short side side wall portion 8 are configured to be displaceable between the upright position and the laying position.

Further, as shown in FIGS. 7 and 14, on the inner surface side of the long side side wall portion 7 and the short side side side wall portion 8, the long side surrounding rib 55 and the short side surrounding rib 58 are larger than the short side surrounding rib 58. An auxiliary rib 60 having a short protrusion length is provided. On the other hand, as shown in FIGS. 9 and 16, the long side side wall heat insulating member 56 and the short side side wall heat insulating member 59 are provided with auxiliary groove portions 61 into which the auxiliary ribs 60 are relatively inserted. ing.

As shown in FIGS. 7 and 14, there are a plurality of auxiliary ribs 60 extending in the left-right direction and one extending in the vertical direction. In the present embodiment, the auxiliary rib 60 includes the long side side wall portion 7 and the upper side portion of the short side side wall portion 8 (long side side upper frame portion 12 and short side side upper frame portion 32), and In the vicinity of the left and right side sides (long side side rib 15 and short side side rib 35), near the center portion and lower side portion of the long side side wall portion 7 and the short side side side wall portion 8. It is provided more densely than.

Further, the auxiliary rib 60 extending vertically is provided with a long side lower side rib 13 and a short side lower side rib 33 having a long side side hinge portion 14 and a short side side hinge portion 34 on the lower surface side. Some are connected to the upper surface of the site. Further, of the portions of the long side lower side rib 13 and the short side lower side rib 33 in which the long side hinge portion 14 and the short side hinge portion 34 are provided on the lower surface side, two are provided on the upper surface side. Regarding the portion where the auxiliary rib 60 is not connected, instead of the auxiliary rib 60, the long side lower side rib 13, the short side lower side rib 33, the long side side base plate 11, and the short side base A reinforcing piece 62 that is obliquely connected to the plate 31 is provided. On the other hand, as shown in FIGS. 9 and 16, the long side side wall heat insulating member 56 and the short side side wall heat insulating member 59 are provided with an insertion groove portion 63 into which the reinforcing piece 62 can be inserted. ..

A convex locking portion 64 is provided on the inner surface side of the long side side wall portion 7 and the short side side side wall portion 8. As shown in FIG. 7, with respect to the long side side wall portion 7, the locking portion 64 is the lowermost side of the plurality of auxiliary ribs 60 extending to the left and right provided along the long side upper frame portion 12. Auxiliary ribs 60, a pair of left and right auxiliary ribs 60 close to the central portion in the width direction of the long side side wall portion 7 among a plurality of auxiliary ribs 60 extending vertically, a long side lower side rib 13, and an inner wall portion 23, respectively. It is provided. As shown in FIG. 14, with respect to the short side side wall portion 8, the locking portion 64 is the lowermost side of the plurality of auxiliary ribs 60 extending to the left and right provided along the short side upper frame portion 32. Auxiliary ribs 60, a pair of left and right auxiliary ribs 60 close to the central portion in the lateral width direction of the short side side wall portion 8 among the plurality of auxiliary ribs 60 extending vertically, and the short side side lower side ribs 33 are provided, respectively.

The locking portion 64 of the long side lower side rib 13 and the short side lower side rib 33 is above the upper end portion (inner end portion) of the upper surface of the long side side lower side rib 13 and the short side lower side rib 33. The locking portion 64 of the inner wall portion 23 protrudes downward from the lower side portion of the inner wall portion 23. On the other hand, the auxiliary rib 60 has a shorter protruding length than the long side surrounding rib 55 and the short side surrounding rib 58 as described above. Therefore, in order to align the positions of the locking portion 64 of the auxiliary rib 60 and the other locking portion 64 in the thickness direction of the long side side wall portion 7 and the short side side side wall portion 8, the auxiliary rib 60 The locking portion 64 is provided at the tip end portion of the extension portion 65 provided so as to extend a part of the tip end portion of the auxiliary rib 60.

On the other hand, as shown in FIGS. 8 and 15, the side wall heat insulating member 51 (long side side wall heat insulating member 56 and short side side wall heat insulating member 59) is locked with the locking portion 64. A locking portion 66 is provided. More specifically, the side wall heat insulating member 51 is provided with a locking hole 67 penetrating in the thickness direction of the side wall heat insulating member 51 at a portion corresponding to the locking portion 64 (extending portion 65) of the auxiliary rib 60. ing. As shown in FIGS. 4 and 26, the extension portion 65 is inserted into the locking hole 67 when the side wall heat insulating member 51 is mounted on the long side side wall portion 7 and the short side side side wall portion 8. It is configured to.

Further, regarding the long side side wall heat insulating member 56, as shown in FIG. 8, on the inner side surface of the long side side wall heat insulating member 56, the locking hole 67, the inner wall portion 23, and the long side lower side rib 13 are respectively. The locked portion 66 is configured by recesses (stepped portions) provided at adjacent positions. Further, with respect to the short side side wall heat insulating member 59, as shown in FIG. 15, on the inner side surface of the short side side wall heat insulating member 59, at positions adjacent to the locking hole 67 and the short side lower side rib 33, respectively. The locked portion 66 is formed by the recesses (stepped portions) provided. As a result, even if the locking portion 64 is provided within the depth range of the side wall heat insulating accommodating portion 53 and the thickness of the side wall insulating member 51 is substantially the same as the depth of the side wall insulating accommodating portion 53. It is possible to reliably lock the locking portion 64 and the locked portion 66.

Although not shown, the space 68 (see FIG. 10) between the inner wall portion 23 provided with the locking piece 24 and the long side base plate 11 in the long side side wall portion 7 is a side wall heat insulating member. Similar to 51, a gap heat insulating member made of expanded polypropylene is attached. The gap heat insulating member is attached to the long side side wall portion 7 by being press-fitted from the side opening leading to the space.

As shown in FIG. 18, a grid-like bottom rib 71 is provided on the upper surface of the bottom wall portion 4 of the bottom wall constituent portion 3. Further, each long side base portion 5 is provided with a base heat insulating accommodating portion 72 that opens to the inner peripheral side of the bottom wall constituent portion 3 and accommodates the base corresponding portion 78 in the thickness direction of the long side base portion 5. .. Further, among the long side base portions 5, the portions corresponding to the long side bearing portions 9 in the longitudinal direction and the longitudinal side side portions of the long side base portion 5 are provided with base heat insulating accommodating portions 72. It is configured as the remaining inner wall portion 73. Each long side base portion 5 of the present embodiment is provided with long side bearing portions 9 at five locations while being separated from each other by a predetermined distance in the longitudinal direction of the long side base portion 5, and each inner wall remaining portion 73. Base insulation accommodating portions 72 are provided at six locations between the space, both side portions of the long side base portion 5, and the inner wall remaining portion 73. In addition, a base rib 74 that protrudes inward and extends vertically is provided on the surface of the base heat insulating accommodating portion 72 that faces the inner peripheral side of the bottom wall constituent portion 3.

Further, as shown in FIG. 19, on the lower surface side of the bottom wall component 3, an inner peripheral support portion 75 which is supported by abutting against the floor surface when the folding container 1 is installed on the floor surface is assembled. When certain folding containers 1 are stacked (stacked) as shown in FIG. 24, the upper side portions (long side side upper side rib 17 and short side side upper side rib 38) of the side wall portions 7 and 8 of the lower folding container 1 are stacked. ) Is provided with an outer peripheral support portion 76 that is in contact with and supported. The outer peripheral support portion 76 is provided in the range where the long side base portion 5 and the short side base portion 6 are provided on the upper surface side of the bottom wall constituent portion 3, and has a bottom wall configuration rather than the outer peripheral support portion 76. The inner peripheral side portion of the portion 3 is configured as the inner peripheral support portion 75. Therefore, when the folded containers 1 in the assembled state are stacked, the inner peripheral support portion 75 is inserted into the inner peripheral side of the side wall portions 7 and 8 of the lower folding container 1, and the side wall portion 7 is inserted. It is configured to be in contact with or close to the inner surface of 8 (the inner edge of the long side upper frame portion 12 and the short side upper frame portion 32, etc.).

As shown in FIGS. 17, 20, and 21, the bottom wall heat insulating member 52 is mounted on the bottom wall corresponding portion 77 mounted on the upper surface side of the bottom wall portion 4 and on the inner surface side of the long side base portion 5. The base corresponding portion 78 is provided, and the bottom wall corresponding portion 77 and the base corresponding portion 78 are integrally formed.

As shown in FIGS. 21 and 22, a bottom groove portion 79 into which the bottom surface rib 71 is fitted is provided on the lower surface side of the bottom wall corresponding portion 77. Further, as shown in FIG. 20 and the like, a base groove portion 80 into which the base rib 74 is fitted is provided on the outer surface side of the base corresponding portion 78. Then, as shown in FIG. 4 and the like, the bottom rib 71 is inserted into the bottom groove 79 of the bottom wall corresponding portion 77, and the base rib 74 is inserted into the base groove 80 of the base corresponding portion 78. By installing 77 above the bottom wall portion 4 and in an area surrounded by the long side base portion 5 and the short side base portion 6, and accommodating the base corresponding portion 78 in the base heat insulating accommodating portion 72, the bottom wall The heat insulating member 52 is attached to the bottom wall corresponding portion 77. As shown in FIGS. 4, 17, and 26, the depth of the base heat insulating accommodating portion 72 in the thickness direction of the long side base portion 5 is deeper than the thickness of the base corresponding portion 78, and the base corresponding portion is formed. The 78 is basically configured so as not to protrude toward the inner peripheral side of the bottom wall constituent portion 3 from the inner wall remaining portion 73.

Further, in the present embodiment, as shown in FIGS. 3 and 23, the short side is arranged on the uppermost side of the four insertion protrusions 41 provided corresponding to the side wall portions 8 on the short side side. The insertion protrusion 41 provided near the upper end of the side side wall portion 8 is the middle length of the five long side bearing portions 9 in a state where the short side side wall portion 8 is in the laid position. It is arranged so as to be in contact with or close to the inner wall remaining portion 73 corresponding to the long side bearing portion 9 adjacent to the side bearing portion 9.

Further, as shown in FIGS. 21 and 22, regarding the connecting portion between the bottom wall corresponding portion 77 and the base corresponding portion 78, the lower surface of the base corresponding portion 78 arranged above the outer peripheral support portion 76 supports the inner circumference. It is located above the lower surface of the bottom wall corresponding portion 77 arranged above the portion 75 and below the upper surface of the bottom wall corresponding portion 77, and is located on the outer peripheral surface of the bottom wall corresponding portion 77 and the base corresponding portion. The inner surface of 78 is connected. Further, the bottom wall heat insulating member 52 projects the outer peripheral surface of the bottom wall corresponding portion 77 to the outer peripheral side of the bottom wall constituent portion 3 from the inner surface of the base corresponding portion 78 at a portion corresponding to the lower side of the base corresponding portion 78. It is provided with a lower overhanging portion 81 (a portion having a scattered spot pattern in FIG. 22) provided so as to be allowed to move.

On the other hand, as shown in FIG. 26, the bottom wall constituent portion 3 includes an overhang accommodating portion 82 accommodating the lower overhang portion 81 on the upper surface side thereof. Further, as shown in FIGS. 19 and 26, the bottom wall constituent portion 3 is provided with the overhang accommodating portion 82, so that the lower surface side of the bottom wall constituent portion 3 is from the inner peripheral support portion 75 to the outer peripheral support portion 76 side. It is provided with a lower convex portion 83 which is provided as a secondary so as to project to the bottom.

On the other hand, as described above, in the present embodiment, as shown in FIGS. 4 and 5, a notch portion is formed in the long side upper side rib 17 of the long side side upper frame portion 12 of the long side side wall portion 7. By providing 19, a recess (hereinafter, the inner side of the upper side rib 17 on the long side and above the lower rib 18 of the upper frame on the long side) is formed at the boundary between the upper side and the inner surface of the long side side wall portion 7. , "Allowable recess 84") is formed. Then, as shown in FIG. 26, when the folded containers 1 in the assembled state are stacked, the lower convex portion 83 of the upper folding container 1 is accommodated in the allowable recess 84 of the lower folding container 1. It is configured in.

Further, as shown in FIG. 17 and the like, concave handle portions 85 are provided at the lower center of each short side portion of the outer peripheral surface of the bottom wall constituent portion 3. Further, as shown in FIG. 13 and the like, an assistance recess 86 is provided in the center of the upper side of the outer surface of each short side side wall portion 8. As shown in FIGS. 24 and 25, when the folded containers 1 in the assembled state are stacked, the handle portion 85 of the upper folding container 1 and the assistance recess 86 of the lower folding container 1 move up and down. It is configured to be adjacent to. With this configuration, even if the vertical widths of the handle portion 85 and the assistance recess 86 are shortened, the handle portion 85 and the assistance recess 86 are connected to each other to secure a gap sufficient for inserting a fingertip. Is possible. Therefore, it is possible to lift the upper folding container 1 by hooking a finger on the lower surface side of the bottom wall constituent portion 3 of the upper folding container 1 through the handle portion 85 and the assistance recess 86.

As described in detail above, according to the present embodiment, the side wall heat insulating member 51 is mounted on the inner surface side of the long side side wall portion 7 and the short side side side wall portion 8, and the upper surface of the bottom wall constituent portion 3 is attached. The bottom wall heat insulating member 52 is mounted on the side, and with these heat insulating members 51 and 52 mounted, the long side side wall portion 7 and the short side side wall portion 8 are set to the upright position and the laying position. It is configured to be displaceable. Therefore, the strength of the folding container 1 is ensured by the container body 2 made of non-foamed polypropylene, and the side wall heat insulating member 51 and the bottom wall heat insulating member 52 made of foamed polypropylene ensure the strength of the folding container 1. It is possible to improve heat insulation and heat retention. Further, since the side wall portions 7 and 8 are configured as a foldable container 1 that can be displaced between the upright position and the laying position, the foldable state is set to the non-use state when the article is not stored. The transportation and storage efficiency of the folding container 1 can be dramatically improved. In particular, since the side wall portions 7 and 8 can be displaced to the laying position with the heat insulating members 51 and 52 attached, the heat insulating members 51 and 52 are removed when the folded container 1 in the assembled state is put into the folded state. You don't have to do such work. Therefore, the workability when assembling and folding the folding container 1 is improved, and the management of the folding container 1 (insulation members 51 and 52) when the folding container 1 is stored in the folded state is relatively managed. It can be easy.

Further, a side wall heat insulating accommodating portion 53 capable of accommodating the side wall insulating member 51 is provided on the inner surface side of the side wall portions 7 and 8. In particular, in the present embodiment, the depth of the side wall heat insulating accommodating portion 53 in the thickness direction of the side wall portions 7 and 8 is configured to be deeper than the thickness of the side wall heat insulating member 51, and is within the range of the thickness of the side wall portions 7 and 8. The entire side wall heat insulating member 51 is adapted to fit. Therefore, the thickness of the "side wall of the folding container 1" including the side wall portions 7 and 8 and the side wall heat insulating member 51 can be made as thin as possible. Therefore, as the thickness of the side wall of the folding container 1 becomes thicker, the outer dimensions of the folding container 1 become larger, which leads to a decrease in the transportation / storage efficiency of the folding container 1, or the inner volume of the folding container 1 becomes smaller. As a result, it is possible to suppress a situation in which the efficiency of transporting and storing goods is lowered.

Further, since the thickness of the side wall of the folding container 1 is made as thin as possible, the side wall portions 7 and 8 can be made relatively smooth (bottom wall constituent portion 3) even when the side wall heat insulating member 51 is attached to the side wall portions 7 and 8. It can be displaced to the laying position (without interfering with other side wall portions 7 and 8), and the height of the folded container 1 in the folded state can be made as low as possible.

In addition, since the side wall heat insulating accommodating portion 53 does not protrude inward from the inner surfaces of the side wall portions 7 and 8, the folding container 1 is set to the upright position first in the work of folding and assembling. At the time of folding, the long side side wall heat insulating member 56 of the long side side wall portion 7 which is to be laid down later comes into contact with the short side side wall portion 8 which is displaced between the standing position and the laying position, and is long. It is possible to suppress a situation in which the side side wall heat insulating member 56 is damaged, folded, and the workability of assembly is lowered.

Further, among the long side side wall portion 7 and the short side side wall portion 8, the long side side base plate 11 and the short side side base plate 31 forming the outer peripheral surface of the folding container 1 have a non-perforated plate shape. It is configured. Therefore, for example, the long side side wall insulation accommodating portion 54 and the short side side wall insulation accommodating portion 57 are provided with holes penetrating in the thickness direction of the long side side wall portion 7 and the short side side wall portion 8. This makes it possible to avoid a situation in which the heat insulating property of the side wall of the folding container 1 is lowered, or foreign matter is accumulated on the inner circumference of the hole or the back side of the side wall heat insulating member 51 to deteriorate the hygiene. it can.

In addition, the side wall portions 7 and 8 of the present embodiment have various ribs for forming the thickness of the side wall portions 7 and 8 and improving the strength of the side wall portions 7 and 8 on the long side base plate. 11 and the short side base plate 31 project inward from the inner surface. That is, the long side side wall insulation accommodating portion is formed by the long side upper frame lower rib 18, the long side lower rib 13, and the pair of long side side ribs 15 protruding inward from the long side base plate 11. The long side surrounding rib 55 that defines the outer periphery of the 54 can be configured, and the short side upper frame lower rib 39, the short side lower rib 33, and a pair that project inward from the short side base plate 31. The short side side side rib 35 can form a short side surrounding rib 58 that defines the outer periphery of the short side side wall insulation accommodating portion 57.

Further, on the inner surface side of the long side side wall portion 7 and the short side side wall portion 8, a long side surrounding rib 55 and an auxiliary rib 60 having a shorter protruding length than the short side surrounding rib 58 are provided. ing. On the other hand, the side wall heat insulating member 51 is provided with an auxiliary groove portion 61 into which the auxiliary rib 60 is relatively inserted. Then, by mounting the side wall heat insulating member 51 on the side wall portions 7 and 8, the side wall heat insulating member 51 is fitted to the inner peripheral side of the long side surrounding rib 55 and the short side surrounding rib 58, and is assisted in the auxiliary groove portion 61. The rib 60 is inserted. Therefore, the long side surrounding rib 55, the short side surrounding rib 58, and the auxiliary rib 60 more reliably prevent the displacement of the side wall heat insulating member 51 (displacement of the folding container 1 in a direction other than the inner peripheral side). It is possible to hold the side wall heat insulating member 51 more reliably.

Further, since the protruding length of the auxiliary rib 60 is shorter than that of the surrounding ribs 55 and 58, it is not necessary to divide the side wall heat insulating member 51 at the auxiliary rib 60. Therefore, the number of pieces of the side wall heat insulating member 51 attached to the side wall portions 7 and 8 can be reduced (in this example, it is one piece), and workability when attaching and detaching the side wall heat insulating member 51 can be reduced. Can be improved.

In addition, the auxiliary rib 60 is provided in the vicinity of the upper side portions of the side wall portions 7 and 8 and the left and right side side portions, from the vicinity of the central portion of the side wall portions 7 and 8 and the vicinity of the lower side portion of the side wall portions 7 and 8. Is also densely provided. Therefore, the deformation of the side wall portions 7 and 8 can be effectively suppressed, and the possibility of the side wall heat insulating member 51 falling off due to the deformation of the side wall portions 7 and 8 can be more reliably prevented.

Further, the long side surrounding rib 55, the short side surrounding rib 58, and the auxiliary rib 60 are provided so as to project inward from the inner surfaces of the long side base plate 11 and the short side base plate 31. .. As a result, it is not necessary to provide various ribs on the outer surface side of the long side side wall portion 7 and the short side side wall portion 8, so that the outer surface of the long side side side wall portion 7 and the short side side side wall portion 8 can be provided. It can be a substantially flat surface. Therefore, it is possible to prevent foreign matter from accumulating on the outer surface side of the side wall portions 7 and 8, and to avoid a situation in which the ribs provided on the outer surface side of the side wall portions 7 and 8 are damaged. Further, the inner surface of the side wall of the folding container 1 can also be made substantially flat by attaching the side wall heat insulating member 51, so that the article is caught by various ribs of the side wall portions 7 and 8 when the article is taken in and out. This can be prevented, or the article can be stably supported by the side wall of the folding container 1 when the folding container 1 is slightly tilted during transportation.

Further, according to the present embodiment, the side wall heat insulating member 51 is formed by locking the locking portions 64 provided on the side wall portions 7 and 8 and the locked portion 66 provided on the side wall heat insulating member 51. It is attached to the side wall portions 7 and 8. Therefore, the side wall heat insulating member 51 can be relatively easily attached to and detached from the side wall portions 7 and 8, and the workability of attaching and detaching the side wall heat insulating member 51 can be improved. Further, since the side wall heat insulating member 51 can be attached and detached relatively easily, the portion of the side wall portions 7 and 8 to which the side wall heat insulating member 51 is mounted and the side wall heat insulating member 51 can be cleaned, ventilated and dried. Maintenance, replacement of the side wall heat insulating member 51, and the like can be performed relatively easily, and hygiene can be improved and convenience can be improved. Further, since it is not necessary to use an adhesive or the like for fixing the side wall heat insulating member 51 to the side wall portions 7 and 8, when the food is stored in the folding container 1, the food can be safely transported and stored.

Further, the locked portion 66 is configured by forming a recess (step portion) on the inner surface side of the side wall heat insulating member 51, and the locking portion 64 is a side wall heat insulating member 51 mounted on the side wall portions 7 and 8. It is configured to fit within the thickness range. Therefore, it is possible to avoid a situation in which the locking portion 64 protrudes toward the inner peripheral side of the folding container 1 from the inner surface of the side wall heat insulating member 51 and comes into contact with the article housed in the folding container 1. Therefore, it is possible to prevent a situation in which the housed article comes into contact with the locking portion 64 and the article and the locking portion 64 are damaged.

Further, according to the present embodiment, in the bottom wall component 3, not only the bottom wall heat insulating member 52 (bottom wall corresponding portion 77) is mounted on the upper surface side of the bottom wall portion 4, but also the bottom wall portion 4 is upwardly mounted. The bottom wall heat insulating member 52 (base corresponding portion 78) is also attached to the inner surface side of the protruding long side base portion 5. For this reason, it is possible to suppress a situation in which the heat insulating property of the long side base portion 5 projecting larger than the short side base portion 6 is lowered, and the heat retention of the folding container 1 can be improved. ..

Further, since the bottom wall corresponding portion 77 and the base corresponding portion 78 are integrally formed, for example, the work of attaching / detaching the bottom wall heat insulating member 52 to the bottom wall constituent portion 3 as compared with the case where the bottom wall corresponding portion 77 is integrally formed. It is possible to improve the sex. In addition, it is possible to make the management when storing the bottom wall heat insulating member 52 before being attached to the container body 2 in the manufacturing process of the folding container 1 relatively easy.

In addition, when a force that winds upward acts on the end of the bottom wall-corresponding portion 77 (for example, it sticks to the stored article and is lifted), it is integrated with the bottom wall-corresponding portion 77. The base corresponding portion 78 formed so as to hit the lower side of the long side base portion 5 located on the side of the base corresponding portion 78 and the long side side wall portion 7 located above the base corresponding portion 78. Be in contact and supported. As a result, the upward displacement of the bottom wall corresponding portion 77 can be suppressed without providing a locking means or the like for restricting the upward displacement of the bottom wall corresponding portion 77 with respect to the bottom wall portion 4. Further, for example, a locking means for restricting the upward displacement of the bottom wall corresponding portion 77 with respect to the bottom wall portion 4 is provided, and the engaging portion locked to the bottom wall corresponding portion 77 by the locking means. When the stopping means is provided, the article housed in the folding container 1 and the locking means directly or indirectly interfere with each other to cause damage, or when the bottom wall heat insulating member 52 is attached, the locking means It is possible to avoid a situation in which the bottom wall heat insulating member 52 is damaged. Further, it is possible to improve the manufacturing workability of the bottom wall constituent portion 3 and the bottom wall heat insulating member 52 while suppressing the complexity of the mold for molding the bottom wall constituent portion 3.

Further, the bottom rib 71 can improve the strength of the bottom wall constituent portion 3. Further, by providing the bottom groove portion 79 into which the bottom rib 71 is inserted in the bottom wall corresponding portion 77 of the bottom wall heat insulating member 52, the misalignment of the bottom wall heat insulating member 52 with respect to the bottom wall constituent portion 3 is more reliably prevented. can do.

Further, in the connecting portion between the bottom wall corresponding portion 77 and the base corresponding portion 78, the lower overhanging portion 81 configured so that the outer peripheral surface of the bottom wall corresponding portion 77 is projected below the base corresponding portion 78 is provided. By providing the connecting portion, the strength of the connecting portion can be improved, and in particular, when the bottom wall heat insulating member 52 is attached to the bottom wall component 3 or when the bottom wall heat insulating member 52 is stored alone, the connecting portion is provided. It is possible to prevent damage to the surface.

Further, the bottom wall component 3 is provided with an overhang accommodating portion 82 for allowing the installation of the lower overhang portion 81 of the bottom wall heat insulating member 52, and the bottom surface side of the bottom wall component 3 is provided with a bottom. A lower convex portion 83 formed secondarily by providing an overhanging accommodating portion 82 on the upper surface side of the wall constituent portion 3 is provided. The lower convex portion 83 is provided so as to project from the inner peripheral support portion 75 toward the outer peripheral support portion 76, and when the folding containers 1 in the assembled state are stacked, the lower convex portion of the upper folding container 1 is convex. There is a concern that the portion 83 interferes with the upper side portion of the long side side wall portion 7 of the lower folding container 1.

In this respect, in the present embodiment, in the upper side portion of the long side side wall portion 7, the allowable recess 84 (notch portion) accommodating the lower convex portion 83 of the upper folding container 1 when the folding container 1 is stacked in the assembled state. 19) is provided. Therefore, the folding containers 1 in the assembled state can be reliably and stably stacked.

In addition, the depth of the base heat insulating accommodating portion 72 in the thickness direction of the long side base portion 5 is configured to be deeper than the thickness of the base corresponding portion 78, and the entire base corresponding portion 78 is formed of the long side base portion 5. It is configured to fit within the thickness range. Therefore, when folding or assembling the folding container 1, it is possible to suppress a situation in which the displaced short side side wall portion 8 comes into contact with the base corresponding portion 78. Therefore, it is possible to improve workability when folding and assembling the folding container 1 and to suppress damage to the base corresponding portion 78.

Further, for example, when the folding container 1 in the folded state is put into the assembled state, the long side side wall portion 7 is set to the upright position, and then the short side side wall portion 8 is set to the upright position. When the short side side wall portion 8 is displaced to the upright position side in a state where the side side wall portion 7 is not completely in the upright position, the upper end portion of the side side portion of the short side side wall portion 8 or its vicinity thereof. The portion (in the present embodiment, the uppermost insertion protrusion 41) may come into contact with the side wall heat insulating member 51 (long side side wall heat insulating member 56) mounted on the inner surface side of the long side side wall portion 7. I am concerned.

In this regard, according to the present embodiment, the uppermost insertion protrusion 41 (hereinafter, "upper insertion protrusion 41") among the insertion protrusions 41 provided on the side side portion of the short side side wall portion 8 in the laid position. (Also referred to as), the inner wall remaining portion 73 located below the long side bearing portion 9 of the long side base portion 5 is configured to be in contact with or close to each other. According to this configuration, when the short side side wall portion 8 in the laid position is displaced to the upright position, the “upper insertion protrusion 41” of the short side side wall portion 8 is the inner wall remaining portion 73 and the long side bearing. It will pass by the side of the part 9. Therefore, for example, when the long side side wall portion 7 is not completely in the upright position and is slightly tilted inward, if the short side side wall portion 8 is displaced to the upright position side, the short side The "upper insertion protrusion 41" of the side side wall portion 8 is a long side hinge portion (connected to the long side bearing portion 9 and inclined so as to project inward from the long side bearing portion 9). It will come into contact with 14. Therefore, when the short side side wall portion 8 is displaced to the upright position side as it is, the long side side wall portion 7 is formed by the short side side side wall portion 8 (upper insertion protrusion 41) at the long side side hinge portion 14. It looks like it is pressed toward the standing position. Then, at the stage where the "upper insertion protrusion 41" of the short side side wall portion 8 passes by the side of the long side side hinge portion 14 of the long side side wall portion 7, the long side side side wall portion 7 is completely upright. It will be the position. As a result, during the assembling work of the folding container 1, it is possible to avoid a situation in which the upper end portion of the side side portion of the short side side wall portion 8 or the "upper insertion protrusion 41" comes into contact with the long side side wall insulation member 56. This makes it possible to prevent damage to the long side side wall heat insulating member 56 and improve assembly workability.

For example, when the folding container 1 is in the folded state, or when the short side side wall portion 8 in the laid position is set to the upright position, the short side side wall portion 8 is one of the long side side base portions 5. When the displacement can be performed so as to tilt to the side, the upper end portion of the side side portion 8 of the short side side wall portion 8 or a portion in the vicinity thereof may come into contact with the base corresponding portion 78 of the bottom wall heat insulating member 52. I am concerned. In this respect, in the present embodiment, the inner wall is arranged so that the tilt displacement of the short side side wall portion 8 can be brought into contact with the upper end portion of the side side portion of the short side side wall portion 8 in the laid position or a portion in the vicinity thereof. It can be regulated by the remaining portion 73. Therefore, when the folding container 1 is put into the assembled state, the upper end portion of the side side portion of the short side side wall portion 8 that is to be displaced from the laying position to the upright position side is pierced into the base corresponding portion 78. It is possible to prevent situations such as contact (getting caught). Further, when the folded container 1 in the folded state is transported, the upper end of the side side portion of the short side side wall portion 8 which is the laid position comes into contact with the base corresponding portion 78 due to the vibration of the folded container 1 or the like. Can be prevented. Therefore, it is possible to improve the assembling workability of the folding container 1 and suppress damage to the base corresponding portion 78.

Further, in the present embodiment, the long side side wall portion 7 is provided with a configuration (hereinafter, also referred to as “lock mechanism”) for preventing the short side side wall portion 8 which is in the standing position from tilting inward. It is composed of a locking piece 24 and a locking projection 25. Therefore, for example, the lock mechanism is simplified as compared with the case where a lock mechanism is provided on the outer surface side of the short side side wall portion 8 so as to include a lock bar that appears and disappears from the side side portion of the short side side wall portion 8. , And can be made compact. Therefore, of the short side side wall portion 8 and the long side side side wall portion 7, the area used for providing the lock mechanism is reduced as much as possible, and instead, the area where the side wall heat insulating member 51 is mounted is reduced as much as possible. Can be secured widely. As a result, the heat insulating property can be dramatically improved.

Further, the locking piece 24 is surrounded by a substantially U-shaped slit provided in the inner wall portion 23 extending inwardly by a predetermined distance from the long side base plate 11 and extending substantially parallel to the long side base plate 11. It is composed of the parts that have been removed. Therefore, the configuration of the locking piece 24 can be simplified. On the other hand, there is a concern that the heat insulating property may be deteriorated due to the formation of the slit penetrating the inner wall portion 23. On the other hand, in the present embodiment, the long side base plate 11 is provided on the outer side of the inner wall portion 23, and the inner wall portion 23 and the long side side are provided between the slit and the outer space of the folding container 1. An area (room) surrounded by the base plate 11 can be formed. Therefore, it is possible to avoid a situation in which the inner space of the folding container 1 and the outer space of the folding container 1 are directly communicated with each other through the slits, and it is possible to suppress a decrease in heat insulating property. Further, the locking piece 24 can be protected by the long side base plate 11.

In particular, in the present embodiment, a gap heat insulating member made of expanded polypropylene is mounted in the space 68 between the inner wall portion 23 provided with the locking piece 24 and the long side base plate 11. Therefore, the heat insulating property of the area surrounded by the inner wall portion 23 and the long side base plate 11 can be dramatically improved, and by providing the locking piece 24, the heat insulating property in the peripheral portion is lowered. Concerns can be dispelled.

The content is not limited to the description of the above embodiment, and may be implemented as follows, for example. Of course, other application examples and modification examples not illustrated below are also possible.

(A) Although not particularly mentioned in the above embodiment, the folding container 1 is configured so that it can be stacked even in the folded state as shown in FIG. When the folding containers 1 in the folded state are stacked, the outer peripheral support portion 76 (see FIG. 19) of the upper folding container 1 contacts and supports the upper surface of the long side base portion 5 of the lower folding container 1. At the same time, the inner peripheral support portion 75 of the upper folding container 1 is located between the pair of long side base portions 5 of the lower folding container 1 and above the long side side wall portion 7 in the laid position. Placed in space. At this time, the lower convex portion 83 of the upper folding container 1 is inserted into the base heat insulating accommodating portion 72 of the lower folding container 1.

Therefore, if the base corresponding portion 78 of the bottom wall heat insulating member 52 is accommodated up to the vicinity of the upper end portion of the base heat insulating accommodating portion 72, the stacking of the folding containers 1 in the folded state as described above will occur. In addition to being hindered, there is a concern that the base corresponding portion 78 of the lower folding container 1 may be crushed by the lower convex portion 83 of the upper folding container 1 and undergo plastic deformation or the like.

In this regard, as shown in FIGS. 2 and 17, the upper side portion of the base corresponding portion 78 of the bottom wall heat insulating member 52 is lower than the upper side portion of the long side base portion 5 (the upper end portion of the base heat insulating accommodating portion 72). By configuring the container so as to be located at, it is possible to avoid interference between the lower convex portion 83 of the upper folding container 1 and the base corresponding portion 78 of the lower folding container 1.

However, if a gap is formed above the base corresponding portion 78 in the base heat insulating accommodating portion 72, as shown in FIGS. 4 and 26, when the folding container 1 is in the assembled state, the base corresponding portion 78 (of There is a concern that a gap is formed between the upper side portion) and the long side side wall portion 7 (lower side portion), and the heat insulating property is lowered in the gap.

On the other hand, for example, as shown in FIGS. 27 to 29, when the long side side wall portion 7 bulges downward from the lower side portion and the long side side side wall portion 7 is in the upright position, the long side side base is formed. A gap closing protrusion 91 to be inserted into the base heat insulating accommodating portion 72 of the portion 5 (the range below the upper side portion of the long side base portion 5 and above the base corresponding portion 78) may be provided. Further, in this case, as shown in FIGS. 27, 28, and 30, the side wall heat insulating member 51 (long side side wall heat insulating member 56) has a bulging portion 92 inserted inside the gap closing protrusion 91. It will be provided. By adopting such a configuration, in the assembled state of the folding container 1, the base corresponding portion 78 of the bottom wall heat insulating member 52 and the side wall heat insulating member 51 (bulging portion 92) can be brought closer to each other, and the bottom can be made closer. It is possible to suppress a situation in which the heat loss from the portion where the heat insulating member is not provided between the wall heat insulating member 52 and the side wall heat insulating member 51 becomes large.

(B) Although not particularly mentioned in the above embodiment, the folding container 1 may be covered with a lid member so that the opening above the folding container 1 can be closed. Further, the lid member may include a lid body having a substantially rectangular shape in a plan view and a lid heat insulating member mounted on the lower surface side of the lid body. For example, when the lid body is put on the folded container 1 in the assembled state, the lid main body is put on the outer peripheral portion of the lower surface of the lid which is supported by contacting the upper side portions of the side wall portions 7 and 8 and the folding container 1 in the assembled state. In this case, the inner peripheral portion of the lower surface of the lid may be provided so as to be inserted into the inner peripheral side of the side wall portions 7 and 8 and to be in contact with or close to the inner surface of the side wall portions 7 and 8. Further, when a lid heat insulating accommodating portion capable of accommodating the lid heat insulating member is provided on the inner peripheral portion of the lower surface of the lid and the lid member is put on the folded container 1 in the assembled state, the lower surface of the lid heat insulating member becomes the side wall portion 7. It may be configured to be located below the upper side portion of 8 and further, the upper side portion of the side wall heat insulating member 51. In this case, the side wall heat insulating member 51 and the lid heat insulating member can be brought close to each other as much as possible, and it is possible to suppress a situation in which heat loss from a portion where the heat insulating member is not provided becomes large.

The inner peripheral portion of the lower surface of the lid is provided with a lid surrounding portion that defines the outer periphery of the lid heat insulating accommodating portion, and a lid auxiliary rib that is provided on the inner peripheral side of the lid surrounding portion and has a short protrusion length downward from the lid surrounding portion. The lid heat insulating member also includes a lid groove portion into which the lid auxiliary rib is inserted and a lid locked portion to be locked with the lid locking portion. Good. The lid insulation member can be protected by the lid surrounding portion. For example, when a force is applied that causes the folding container 1 and the lid member to be displaced in the horizontal direction, the lid insulation member may be damaged. Can be prevented. Further, when attaching / detaching the lid member, for example, as compared with a configuration in which the side wall heat insulating member 51 and the lid heat insulating member are in sliding contact with each other, workability can be improved and damage to the lid heat insulating member can be suppressed.

In addition, the folding containers 1 covered with the lid member can be stacked on top of each other (the inner peripheral support portion 75 of the container body 2 and the lid recess capable of accommodating the lower convex portion 83 are provided on the upper surface side of the lid member). ), The lid members may be stacked, and the lid members can be stacked on the folded container 1 in the folded state without misalignment (with respect to the lower surface side of the lid members). A portion to be inserted into the upper part of the base heat insulating accommodating portion 72 may be provided, such as the lower convex portion 83 of the bottom wall constituent portion 3.).

The configuration of the lid member is not particularly limited and can be appropriately designed. Further, a handle recess may be provided in a portion of the outer peripheral surface of the lid member adjacent to the portion above the assistance recess 86 of the short side side wall portion 8 in a state of covering the folding container 1. In this case, even if the vertical widths of the assistance recess 86 and the handle recess are shortened, the assistance recess 86 and the handle recess are connected to each other, and a gap sufficient for inserting the fingertip can be secured. Therefore, it is possible to lift the lid member by hooking a finger on the lower surface side of the lid member through the assistance recess 86 and the handle recess.

(C) In the above embodiment, after the pair of short side side wall portions 8 are laid above the bottom wall constituent portion 3, the pair of short side side wall portions 8 are laid above the laid position. The pair of long side side wall portions 7 can be laid down, but after the pair of long side side wall portions 7 are laid down above the bottom wall component 3, a pair of short sides are laid down. The side side wall portion 8 may be configured so that it can be laid down. Further, in the above embodiment, in the folded state of the folding container 1, the short side side wall portions 8 do not overlap each other vertically, and the long side side wall portions 7 do not overlap each other vertically. However, they may be configured to overlap.

(D) In the above embodiment, the thickness of the side wall heat insulating member 51 is substantially the same (slightly thin) as the depth of the side wall heat insulating accommodating portion 53, and the entire thickness of the side wall heat insulating member 51 fits within the thickness of the side wall portions 7 and 8. However, the thickness of the side wall heat insulating member 51 may be made thicker or thinner than the depth of the side wall heat insulating accommodating portion 53. Also in this case, the heat insulating property can be improved as much as possible, and the thickness of the side wall of the folding container 1 can be made as thin as possible. However, by making the thickness of the side wall heat insulating member 51 substantially the same as the depth of the side wall heat insulating accommodating portion 53, such an action effect is further exerted, and the entire side wall insulating member 51 is formed of the side wall insulating accommodating portion 53. By fitting it inside, damage to the side wall heat insulating member 51 can be further suppressed.

(E) In the above embodiment, the side wall heat insulating member 51 is attached to the side wall portions 7 and 8 by locking the locking portion 64 and the locked portion 66, but it is attached by another method. May be. For example, by attaching a mounting member (for example, an umbrella-shaped or band-shaped) having a locking means provided on the side wall portions 7 and 8 and a lockable locking means to the side wall portions 7 and 8, the side wall The side wall heat insulating member 51 may be sandwiched and fixed between the portions 7 and 8 and the mounting member. Further, the side wall portions 7 and 8 and the side wall heat insulating member 51 may be fixed by using an adhesive.

In addition, in the above embodiment, the locked portion 66 is provided by forming the recess on the inner surface side of the side wall heat insulating member 51, but the recess may be omitted. In this case, the locking portion 64 is locked so as to compress the side wall heat insulating member 51 and dig into the side wall heat insulating member 51. It is also possible to configure the locking surface of the locking portion 64 to be at the same position as the inner surface of the side wall heat insulating member 51 in the thickness direction of the side wall portions 7 and 8, but the locking portion 64 is the side wall heat insulating member. When projecting from the inner surface of the member 51 or the inner surfaces of the side wall portions 7 and 8 toward the inner peripheral side of the folding container 1, the article housed in the folding container 1 and the locking portion 64 come into contact with each other to lock the article and the locking portion 64. Since the risk of damage to the portion 64 increases, it is desirable that the locking portion 64 is housed within the thickness range of the side wall heat insulating member 51 and inside the side wall heat insulating accommodating portion 53.

The side wall heat insulating member 51 is provided with a locking hole 67 (opening) for inserting an extending portion 65 connecting the auxiliary rib 60 and the locking portion 64, but the locking hole 67 is provided. A slit may be provided instead of. In this case, the extending portion 65 is inserted so as to push the slit wide open, and the locking portion 64 is locked to the locked portion 66.

(F) In the above embodiment, as a configuration (locking mechanism) for preventing the short side side wall portion 8 from falling inward, the locking piece 24 and the locking projection 25 are provided with respect to the long side side wall portion 7. Although it is provided, the configuration of the lock mechanism is not particularly limited and can be appropriately designed. However, it is desirable to minimize the area required for installing the lock mechanism and secure the area where the side wall heat insulating member 51 can be installed as large as possible.

Further, with respect to the gap heat insulating member mounted in the space 68 between the inner wall portion 23 provided with the locking piece 24 and the long side base wall 11, a recess corresponding to a portion where the locking piece 24 can be displaced. May be provided, or may be made of a material softer than the side wall heat insulating member 51 and the bottom wall heat insulating member 52. It is also possible to omit the gap heat insulating member.

(G) In the above embodiment, since the short side base portion 6 has a short protrusion length from the bottom wall portion 4 in the bottom wall constituent portion 3, the short side base portion 6 is provided with the bottom wall heat insulating member 52. However, when the protrusion length of the short side base portion 6 is longer (for example, the short side side wall portions 8 in the laid position are overlapped with each other), the configuration is not provided. The base heat insulating accommodating portion 72 may also be provided on the short side base portion 6 to mount the bottom wall heat insulating member 52 (base corresponding portion 78).

Further, the heat insulating member may be attached to the lower portion of the long side bearing portion 9 of the long side base portion 5. For example, the base heat insulating accommodating portion is also provided in the lower portion of the long side bearing portion 9 so as to provide a recess in the inner wall remaining portion 73, and the heat insulating member accommodated in the base heat insulating accommodating portion is provided in the above embodiment. It may be provided so as to be connected to at least one of the bottom wall corresponding portion 77 and the base corresponding portion 78. Further, for example, a heat insulating member of another member is inserted from the lower surface side of the bottom wall constituent portion 3 into the space between the inner wall remaining portion 73 of the above embodiment and the outer wall of the long side base portion 5. A heat insulating member may also be attached to the lower portion of the long side bearing portion 9.

In the above embodiment, the bottom wall heat insulating member 52 is mounted on the upper surface side of the bottom wall component 3, but it is assumed that the folding container 1 is placed on the heat insulating member and transported. In this case, it is also possible to embody the folding container 1 in which the bottom wall heat insulating member 52 is not mounted.

(H) In the above embodiment, the container body 2 is made of solid polypropylene, but may be made of other resin materials such as polyethylene, PET, and polyamide. Further, although the side wall heat insulating member 51 and the bottom wall heat insulating member 52 are made of foamed polypropylene, they may be made of other foamed resin materials such as foamed polyethylene, expanded polystyrene, and foamed polyurethane.

1 ... Folding container, 2 ... Container body, 3 ... Bottom wall component, 4 ... Bottom wall, 5 ... Long side base, 6 ... Short side base, 7 ... Long side side wall, 8 ... Short Side side wall portion, 9 ... long side bearing portion, 10 ... short side bearing portion, 11 ... long side base plate, 13 ... long side upper rib, 18 ... long side hinge portion, 23 ... inner wall portion, 24 ... Locking piece, 25 ... Locking protrusion, 51 ... Side wall heat insulating member, 52 ... Bottom wall heat insulating member, 53 ... Side wall heat insulating housing, 54 ... Long side side wall heat insulating housing, 55 ... Long side surrounding rib, 56 ... Long side side wall heat insulating member, 57 ... Short side side wall heat insulating member, 58 ... Short side side wall heat insulating member, 59 ... Short side side wall heat insulating member, 60 ... Auxiliary rib, 61 ... Auxiliary groove part, 64 ... Locking part , 66 ... Locked part, 71 ... Bottom rib, 72 ... Base heat insulation accommodating part, 73 ... Inner wall remaining part, 75 ... Inner circumference support part, 76 ... Outer peripheral support part, 77 ... Bottom wall compatible part, 78 ... Base compatible Part, 79 ... bottom groove, 81 ... lower overhang, 82 ... lower housing, 83 ... lower convex, 84 ... storage recess.

Claims (3)

The bottom wall component, which has a rectangular plate shape in a plan view,
An upright position that stands above each side of the bottom wall component and a lay that is folded toward the center of the bottom wall component, corresponding to each side of the bottom wall component. A container body having a side wall portion rotatably provided between the positions and
In a folding container composed of a foamed synthetic resin and provided with a side wall heat insulating member mounted on the inner surface side of the side wall portion.
The bottom wall component and the side wall are made of non-foamed synthetic resin.
The side wall portion includes a side wall insulation accommodating portion for accommodating at least a part of the side wall heat insulating member in the thickness direction of the side wall portion.
The side wall portion is configured to be displaceable between the upright position and the laying position while the side wall heat insulating member is attached to the side wall portion.
The bottom wall constituent portion includes a bottom wall portion having a substantially rectangular plate shape, and a base portion that projects upward along each side side portion of the bottom wall portion.
Each of the base portions includes a plurality of bearing portions that pivotally support the plurality of shaft portions provided on the side wall portions.
The base portion is formed by connecting a pair of first base portions provided along a pair of side sides of the bottom wall portion and both ends of the pair of first base portions, respectively. It is provided with a pair of second bases provided along the side edges of the bottom wall.
The side wall portion includes a pair of first side wall portions connected to each of the first base portions and a pair of second side wall portions connected to each of the second base portions.
The bearing portion of the first base portion is located above the bearing portion of the second base portion, and is located above the bearing portion.
By setting the pair of the second side wall portions above the bottom wall portion and setting the laying position, the first side wall portion can be set as the laying position above the second side wall portion that is set as the laying position. In possible configurations
The first side wall portion includes a locking piece that is elastically deformable in the thickness direction of the first side wall portion, and the second side wall portion that is provided at the tip end portion of the locking piece and is in an upright position. With a locking projection that abuts and supports the inner surface of the
The portion of the side wall portion where the locking piece is provided has a two-layer structure including an outer wall portion and an inner wall portion provided at a predetermined distance from each other in the thickness direction of the side wall portion.
The locking piece is a folding container characterized in that it is composed of a portion surrounded by a substantially U-shaped slit provided in the inner wall portion . The bottom wall component, which has a rectangular plate shape in a plan view,
An upright position that stands above each side of the bottom wall component and a lay that is folded toward the center of the bottom wall component, corresponding to each side of the bottom wall component. A container body having a side wall portion rotatably provided between the positions and
With a side wall heat insulating member composed of foamed synthetic resin and mounted on the inner surface side of the side wall portion.
In a folding container equipped with
The bottom wall component and the side wall are made of non-foamed synthetic resin.
The side wall portion includes a side wall insulation accommodating portion for accommodating at least a part of the side wall heat insulating member in the thickness direction of the side wall portion.
The side wall portion is configured to be displaceable between the upright position and the laying position while the side wall heat insulating member is attached to the side wall portion.
The bottom wall constituent portion includes a bottom wall portion having a substantially rectangular plate shape, and a base portion that projects upward along each side side portion of the bottom wall portion.
Each of the base portions includes a plurality of bearing portions that pivotally support the plurality of shaft portions provided on the side wall portions.
The base portion is formed by connecting a pair of first base portions provided along a pair of side sides of the bottom wall portion and both ends of the pair of first base portions, respectively. It is provided with a pair of second bases provided along the side edges of the bottom wall.
The side wall portion includes a pair of first side wall portions connected to each of the first base portions and a pair of second side wall portions connected to each of the second base portions.
The bearing portion of the first base portion is located above the bearing portion of the second base portion, and is located above the bearing portion.
By setting the pair of the second side wall portions above the bottom wall portion in the laying position, the first side wall portion can be set in the laying position above the second side wall portion set as the laying position. In possible configurations
The first side wall portion includes a locking piece that is elastically deformable in the thickness direction of the first side wall portion, and the second side wall portion that is provided at the tip end portion of the locking piece and is in an upright position. With a locking projection that abuts and supports the inner surface of the
The portion of the side wall portion where the locking piece is provided has a two-layer structure including an outer wall portion and an inner wall portion provided at a predetermined distance from each other in the thickness direction of the side wall portion.
A folding container characterized in that a gap heat insulating member made of a foamed synthetic resin is mounted between the inner wall portion provided with the locking piece and the outer wall portion. And the locking piece is the inner wall portion provided, between the outer wall portion, the container folding according to claim 1, characterized in that the gap insulating member composed of foamed synthetic resin is attached ..

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