JP2018115021A - Folding container - Google Patents

Abstract

The present invention provides a folding container that has heat retention performance and can improve transportation and storage efficiency.
A folding container (1) includes a bottom wall constituting part (3) having a substantially rectangular plate shape in plan view, and side wall parts (7, 8) provided so as to be rotatable corresponding to respective side parts of the bottom wall constituting part (3). A side wall heat insulating member 51 and a bottom wall heat insulating member which are made of foamed synthetic resin and are attached to the inner surface side of the side wall portions 7 and 8 and the upper surface side of the bottom wall constituting portion 3. 52. The bottom wall constituting part 3 and the side wall parts 7 and 8 are made of non-foamed synthetic resin. The bottom wall constituting part 3 includes a bottom wall part 4 having a substantially rectangular plate shape, and each side of the bottom wall part 4. A long-side base portion 5 and a short-side base portion 6 that protrude upward along the portion are provided. The bottom wall heat insulating member 52 includes a bottom wall corresponding portion 77 that is mounted on the upper surface side of the bottom wall portion 4, and a base corresponding portion 78 that is mounted on the inner surface side of the long side base portion 5. 77 and the base corresponding part 78 are integrally formed.
[Selection] Figure 4

Description

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

  2. Description of the Related Art Conventionally, containers made of foamed synthetic resin are known as containers for storing articles that require temperature management. Further, in order to improve the durability, there is a technique in which an inner container made of foamed synthetic resin integrally formed in a box shape is mounted inside an outer container made of non-foamed synthetic resin integrally formed in a box shape. (For example, refer patent document 1 etc.).

Japanese Patent Laid-Open No. 10-17031

  When the technique of Patent Document 1 is adopted, the strength of the container is secured by the outer container, and the heat retaining performance is secured 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 dimension of the container is increased by that amount, resulting in a decrease in container transportation and storage efficiency. There is a concern that the internal volume may be reduced or the efficiency of transporting and storing articles may be reduced. Moreover, 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 efficiency of transporting and storing the container in a state where no article is stored is greatly deteriorated.

  The present invention has been made to solve the above-described problems and the like, and its purpose is to provide a folding container that has a heat retaining performance and can improve transportation and storage efficiency. is there.

  In the following, each means suitable for solving the above-mentioned purpose will be described in terms of items. In addition, the effect etc. peculiar to a corresponding means are added as needed.

Means 1. A bottom wall constituting part having a substantially rectangular plate shape in plan view;
Corresponding to each side part of the bottom wall constituent part, an upright position standing above each side part of the bottom wall constituent part, and a lay folded on the center part side of the bottom wall constituent part A container body comprising a side wall portion rotatably provided between positions;
A side wall heat insulating member made of a synthetic foam resin and mounted on the inner surface side of the side wall portion,
In a folding container comprising a synthetic resin foam and a bottom wall heat insulating member mounted on the upper surface side of the bottom wall constituent part,
The bottom wall constituent part and the side wall part are made of non-foamed synthetic resin,
The side wall portion is attached to the side wall heat insulating member, and the side wall portion is configured to be displaceable between the standing position and the laying position with the bottom wall constituting portion being attached to the bottom wall heat insulating member.
The bottom wall constituting portion includes a bottom wall portion having a substantially rectangular plate shape, and a base portion protruding upward along each side portion of the bottom wall portion,
A grid-like bottom rib is provided on the top surface of the bottom wall portion,
The bottom wall heat insulating member is
A bottom groove portion into which the bottom rib is fitted on the lower surface side, and a bottom wall corresponding portion mounted on the upper surface side of the bottom wall portion;
A base corresponding part to be mounted on the inner surface side of the base part,
The folding container, wherein the bottom wall corresponding part and the base corresponding part are integrally formed.

  According to the means 1, the strength of the folding container is ensured by the container body made of the non-foamed synthetic resin, and the heat insulation of the folding container is made by the side wall heat insulating member and the bottom wall heat insulating member made of the foamed synthetic resin. It can improve the property and heat retention. Furthermore, since the side wall portion is configured as a folding container that can be displaced between the standing position and the laying position, in a non-use state in which no articles are accommodated, all the side wall portions are in a foldable state. As a result, the efficiency of transporting and storing containers in a non-use state can be dramatically improved. In particular, since the side wall portion can be displaced to the laying position with the side wall portion attached to the side wall portion and the bottom wall constituent portion attached to the bottom wall heat insulating member, all the side wall portions are set to the standing position. When the folded container in the assembled state is folded, it is not necessary to remove the side wall heat insulating member and the bottom wall heat insulating member. For this reason, while improving the workability | operativity at the time of assembling or folding a folding container, management of the folding container (a side wall heat insulating member and a bottom wall heat insulating member) at the time of storing a folding container in a folded state is carried out. It can be relatively easy.

  Further, according to the present means 1, in the bottom wall constituting portion, not only the bottom wall heat insulating member (bottom wall corresponding portion) is mounted on the upper surface side of the bottom wall portion, but also the base portion protruding upward from the bottom wall portion. The bottom wall heat insulating member (base-compatible part) is also attached to the inner surface side. For this reason, the situation where heat insulation falls in a base part can be suppressed, and the improvement of the heat retention of a folding container can be aimed at.

  Furthermore, since the bottom wall corresponding part and the base corresponding part are integrally formed, for example, compared with the case where they are configured separately, the workability of attaching and detaching the bottom wall heat insulating member to the bottom wall constituent part is improved. Can be planned. In addition, management when storing the bottom wall heat insulating member before being attached to the container main body in the manufacturing process of the folding container can be made relatively easy.

  In addition, in the case where a force that squeezes upward acts on the end of the bottom wall corresponding part (for example, when it is lifted by adhering to the stored article), it is integrated with the bottom wall corresponding part. The formed base corresponding part is supported in contact with the base part located on the side of the base corresponding part or the lower side part of the side wall part located above the base corresponding part. Thereby, even if it does not provide the latching means etc. which control the upward displacement of a bottom wall corresponding | compatible part with respect to a bottom wall part, the upward displacement of a bottom wall corresponding | compatible part can be suppressed. Further, for example, a locking means for restricting the upward displacement of the bottom wall corresponding portion with respect to the bottom wall portion is provided, and a locked means to be locked to the locking means with respect to the bottom wall corresponding portion is When provided, the article contained in the folding container and the locking means may be damaged by direct or indirect interference, or when the bottom wall heat insulating member is attached, the locking means or the bottom wall heat insulating member Can be avoided. Furthermore, the manufacturing workability of the bottom wall constituent part and the bottom wall heat insulating member can be improved while suppressing the complexity of the mold for molding the bottom wall constituent part.

  Further, the strength of the bottom wall constituting portion can be improved by the bottom rib. Furthermore, by providing the bottom groove part into which the bottom rib is inserted in the bottom wall corresponding part of the bottom wall heat insulating member, it is possible to more reliably prevent the positional deviation of the bottom wall heat insulating member with respect to the bottom wall constituent part.

Mean 2. On the lower surface side of the bottom wall constituting portion, when the folding container is installed on the floor surface, an inner peripheral support portion that is supported in contact with the floor surface and an assembled state in which all the side wall portions are in the standing position. When the folding containers in each other are stacked, an outer peripheral support part that is supported by contacting the upper side part of the side wall part of the lower folding container is provided,
The inner peripheral support portion is inserted into the inner peripheral side of the side wall portion of the lower folding container and contacts the inner surface of the side wall portion when the folding containers in the assembled state are stacked up and down. Or a close configuration,
Regarding the connecting portion between the bottom wall corresponding portion of the bottom wall heat insulating member and the base corresponding portion,
The lower surface of the base corresponding portion disposed above the outer peripheral support portion is higher than the lower surface of the bottom wall corresponding portion disposed above the inner peripheral support portion and from the upper surface of the bottom wall corresponding portion. Is also located below,
While connecting the outer peripheral surface of the bottom wall corresponding part and the inner surface of the base corresponding part,
The bottom wall heat insulating member causes the outer peripheral surface of the bottom wall corresponding portion to protrude from the inner surface of the base corresponding portion to the outer peripheral side of the bottom wall constituting portion at a portion corresponding to the lower side of the base corresponding portion. With a lower overhang provided
The bottom wall constituting portion includes an overhang accommodating portion for accommodating the lower overhanging portion on the upper surface side thereof, and the inner circumference is provided on the lower surface side of the bottom wall constituting portion by providing the overhang accommodating portion. A lower protrusion provided so as to protrude from the support portion toward the outer periphery support portion;
In the boundary portion between the upper side portion and the inner surface of the side wall portion, when the folding containers in the assembled state are stacked, an allowable concave portion capable of accommodating the lower convex portion of the upper folding container is provided. The folding container according to means 1 characterized by the above.

  According to the means 2, the lower projecting portion configured to project the outer peripheral surface of the bottom wall corresponding portion below the base corresponding portion is provided at the connecting portion between the bottom wall corresponding portion and the base corresponding portion. In particular, the strength of the connecting portion can be improved. Particularly, when the bottom wall heat insulating member is attached to the bottom wall constituting portion or when the bottom wall heat insulating member is stored alone, the connecting portion is damaged. Can be prevented.

  In addition, the bottom wall component is provided with an overhang accommodating portion for allowing the installation of the lower overhang portion of the bottom wall heat insulating member, and on the lower surface side of the bottom wall component is the upper surface of the bottom wall component. By providing the overhanging accommodating portion on the side, a lower convex portion formed as a secondary is provided. The lower convex portion is provided so as to protrude from the inner peripheral support portion toward the outer peripheral support portion, and when the folding containers in the assembled state are stacked (stacked), the lower convex portion of the upper folding container However, there is a concern that it may interfere with the upper side portion of the side wall portion of the lower folding container.

  On the other hand, in this means 2, the upper side part of a side wall part is provided with the allowable recessed part which accommodates the lower convex part of an upper folding container at the time of stacking of the folding container in an assembly state. Therefore, the folded containers in the assembled state can be reliably and stably stacked.

Means 3. The base portion includes a base heat insulating accommodation portion that opens to an inner peripheral side of the bottom wall constituting portion and accommodates the base corresponding portion in the thickness direction of the base portion.
The folding container according to means 1 or 2, wherein a depth of the base heat insulating housing part in a thickness direction of the base part is configured to be deeper than a thickness of the base corresponding part.

  According to the means 3, when the folding container is folded or assembled, it is possible to suppress a situation in which the displaced side wall portion comes into contact with the base corresponding portion. Therefore, it is possible to improve the workability when folding and assembling the folding container, and to suppress damage to the base corresponding part.

Means 4. The base portion connects the pair of first base portions provided along a pair of opposite side portions of the bottom wall portion and both ends of the pair of first base portions, respectively. A pair of second base parts provided along the side part of the bottom wall part,
The side wall includes a pair of first side walls connected to the first base parts and a pair of second side walls connected to the second base parts,
Each of the base portions includes a plurality of bearing portions that respectively support a plurality of shaft portions provided on the respective side wall portions,
The bearing portion of the first base portion is located above the bearing portion of the second base portion;
A pair of the second side wall portions are set to the laying position above the bottom wall portion, so that the first side wall portion is set to the laying position above the second side wall portion set as the laying position. In a possible configuration,
The first base portion includes an inner wall remaining portion in which the base heat insulating housing portion is not provided in the longitudinal direction of the first base portion, and the bearing portion is provided corresponding to the inner wall remaining portion,
The upper end portion of the side portion of the second side wall portion or the vicinity thereof is the inner wall remaining portion in which the bearing portion is provided correspondingly in a state where the second side wall portion is in the sleeping position. The folding container according to claim 3, wherein the folding container is configured to abut against or be close to.

  For example, when the folded container in the folded state is set in the assembled state, the first side wall portion is set to the upright position and then the second side wall portion is set to the upright position. However, the first side wall portion is completely upright. When the second side wall portion is displaced to the standing position side in a state where the second side wall portion is not positioned, the upper end portion of the side portion of the second side wall portion or the vicinity thereof is mounted on the inner surface side of the first side wall portion. There is a concern about contact with the side wall heat insulating member.

  In this regard, according to the present means 4, when the second side wall portion in the laying position is displaced to the standing position, the upper end portion of the side portion of the second side wall portion, or the vicinity thereof is the inner wall remaining portion, And it will pass the side of a bearing part. For this reason, for example, when the first side wall portion is not completely in the standing position and is slightly tilted inward, if the second side wall portion is displaced to the standing position side, the second side wall portion side The upper end portion of the side portion or the vicinity thereof is in contact with the shaft portion of the first side wall portion (which is connected to the bearing portion of the first base portion and is inclined so as to protrude inward from the bearing portion). Will be. Therefore, when the second side wall portion is displaced as it is to the upright position side, the first side wall portion is shaped to be pressed toward the upright position side by the second side wall portion at the shaft portion. And in the stage where the upper end part of the side part of the 2nd side wall part, or its neighborhood part passes the side of the axis part of the 1st side wall part, the 1st side wall part shall be made into a standing position completely. It becomes. As a result, it is possible to avoid a situation in which the upper end portion of the side portion of the second side wall portion contacts the side wall heat insulating member of the first side wall portion during the assembly operation of the folding container, thereby preventing the side wall heat insulating member from being damaged. In addition, the assembly workability can be improved.

It is the perspective view which looked at the folding container in an assembly state from the upper surface side. It is the 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 from which a folding container is made into an assembly state from a folding state. It is a perspective view containing the partial cross section of a folding container. It is a perspective view which shows the inner surface side of the long side side wall part with which the long side side wall heat insulating member was mounted | worn. It is a perspective view which shows the outer surface side of a long side wall part. It is a perspective view which shows the inner surface side of a long side wall part. It is a perspective view which shows the inner surface (surface exposed to the inner side of a folding container) side of a long side side wall heat insulating member. It is a perspective view which shows the outer surface side of a long side side wall heat insulating member. It is a partial expansion perspective view containing the partial cross section of a long side side wall part and a long side side wall heat insulation member. It is a partial expansion perspective view of a long side wall part. It is a perspective view of the short side wall part by which the short side wall heat insulating member was mounted | worn. It is a perspective view which shows the outer surface side of a short side wall part. It is a perspective view which shows the inner surface side of a short side wall part. It is a perspective view which shows the inner surface (surface exposed to the inner side of a folding container) side of a short side wall heat insulating member. It is a perspective view which shows the outer surface side of a short side wall heat insulating member. It is a perspective view of the bottom wall structure part with which the bottom wall heat insulation member was mounted | worn. It is a perspective view which shows the upper surface side of a bottom wall structure part. It is a perspective view which shows the lower surface side of a bottom wall structure part. It is a perspective view which shows the upper surface side of a bottom wall heat insulation member. It is a perspective view which shows the lower surface side of a bottom wall heat insulation member. It is sectional drawing of a bottom wall heat insulation member. It is a partial expanded sectional view at the time of cut | disconnecting a folding container in the horizontal direction in the upper position of the short side wall part in a laying position. It is a perspective view which shows the folding container stacked. It is a partial expanded sectional view at the time of cutting the stacked folding container up and down along the longitudinal direction of each folding container. It is a partial expanded sectional view at the time of cutting the stacked folding container up and down along the transversal direction of each folding container. It is a perspective view containing the partial cross section of the folding container in another embodiment. It is a perspective view of the long side wall part to which the long side wall heat insulating member was mounted. It is a perspective view which shows the inner surface side of a long side wall part. It is a perspective view which shows the inner surface side of a long side side wall heat insulating member.

  Hereinafter, an embodiment will be described with reference to the drawings. As shown in FIGS. 1 and 4, the folding container 1 includes a container body 2 that can be assembled in a box shape that opens upward, a side wall heat insulating member 51 that is formed 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 includes 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. 4 for the bottom wall constituting part 3 (see FIG. 18), each of which includes a short side base part 6 projecting upward from the bottom wall part 4 along each short side part, And a long side wall portion 7 provided so as to be rotatable, and a short side wall portion 8 provided so as to be rotatable with respect to each short side base portion 6. The bottom wall constituting part 3, the long side wall part 7, and the short side wall part 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 wall portion 7 and the short side wall portion 8, and the bottom wall heat insulating member 52 is mounted on the upper surface side of the bottom wall constituting portion 3. . In this embodiment, the long side base portion 5 constitutes the first base portion, the short side side base portion 6 constitutes the second base portion, and the long side side wall portion 7 constitutes the first side wall portion. And the short side wall part 8 comprises a 2nd side wall part.

  As shown in FIGS. 1 to 3, the long-side side wall 7 and the short-side side wall 8 are respectively provided upright above the long-side base 5 and the short-side base 6. Folded above the bottom wall portion 4 and configured to be able to rotate and displace between a laying position extending substantially parallel to the bottom wall portion 4. Moreover, as shown in FIG. 18 etc., the protrusion length from the bottom wall part 4 of the long side base part 5 is longer than the protrusion length from the bottom wall part 4 of the short side base part 6, The formation position of the long side bearing portion 9 for rotatably supporting the side wall portion 7 is also more than the formation position of the short side bearing portion 10 for rotatably supporting the short side wall portion 8. Is also located above. Furthermore, each short side base part 6 is provided so that the inner surfaces of a pair of opposing long side base part 5 may be connected. In addition, as shown in FIGS. 1 and 3, the lateral width of the long side wall 7 is configured to be the same as the length of the long side base 5 in the longitudinal direction, and the lateral width of the short side wall 8 is The length of the short side base portion 6 is the same as the length in the longitudinal direction.

  For this reason, in this embodiment, the folding container 1 in the assembled state in which all the long side wall portions 7 and the short side wall portions 8 are in the upright position is used for all the long side wall portions 7 and In the folded state where the short side wall 8 is in the sleeping position, the long side wall 7 is moved to the sleeping position unless the pair of short side walls 8 are first displaced to the sleeping position. Displacement is impossible (see FIG. 3). As shown in FIG. 2, when the folding container 1 is in the folded state, the short-side side wall portion 8 that is in the laying position overlaps (becomes facing) the bottom wall portion 4, and the laying position The long side wall portion 7 is overlapped above the short side wall portion 8. In FIG. 3, for the sake of convenience, the illustration of the long side wall 7 on the front side of the paper is omitted.

  As shown in FIG. 6, FIG. 7, etc., each long-side side wall 7 has a substantially flat long-side base plate 11 constituting the outer surface (a part of the outer peripheral surface) of the folding container 1 in the assembled state, A long side upper frame 12 provided to project inward (inner side of the folding container 1 in an assembled state) from the long side base plate 11 along the upper side of the long side base plate 11, A long-side lower-side rib 13 protruding inward from the lower side of the side-side base plate 11 and a substantially T-shape protruding downward from the lower surface of the long-side lower-side rib 13 and pivotally supported by the long-side bearing 9 A long side hinge part 14 as a shaft part, a pair of left and right long side side ribs 15 projecting inward from the side part of the long side base plate 11, and the tips of the long side side ribs 15 Long side side ribs 16 projecting sideways from the side.

  As shown in FIG. 7, the long-side upper frame portion 12 includes a long-side upper 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. And a long side upper frame lower rib 18 provided with a gap therebetween. The long-side upper rib 17 is formed such that a portion on the inner side of the long-side upper rib 17 is notched from the vicinity of one end in the lateral width direction of the long-side side wall 7 to the vicinity of the other end. A notch 19 is provided. By providing the notch 19, most of the long-side upper frame lower rib 18 is exposed upward. Further, a long side upper frame reinforcing rib 20 is provided to connect the lower surface of the long side upper 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-stage rib 18, the long-side lower-side rib 13, and the long-side-side side rib 15 protrude from the long-side base plate 11 in the same length.

  In addition, the long side wall 7 is provided with a locking wall 21 that protrudes from the side of the inner surface of the long side rib 16. Each locking wall 21 is provided with four insertion holes 22 that open to the center side in the lateral width direction of the long side wall 7 at a predetermined interval. In addition, as shown in FIG. 6, in order to reinforce both sides of the long side wall 7, ribs and the like are provided for connecting the outer surface of the long side rib 16 and the long side rib 15. ing.

  Further, as shown in FIGS. 7 and 11, on the inner corner side of the boundary portion between each long-side side rib 15 and the long-side upper frame lower rib 18, the tip of the long-side upper frame lower rib 18 is provided. An inner wall portion 23 that protrudes 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 ribs 16 so as to be flush with each other.

  Furthermore, in the present embodiment, in the range from each inner wall portion 23 to the adjacent long side rib 16, a substantially U-shaped slit is formed on the inner wall portion 23 and the long side rib 16 to thereby form the slit. A locking piece 24 constituted by a portion surrounded by a bracket and a locking projection 25 protruding inward from the tip of the locking piece 24 are provided. Each locking piece 24 is connected to the inner wall portion 23 at the center in the width direction of the long side wall portion 7. Further, as shown in FIG. 10, the long side ribs 15 are 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 wall portion 7. In addition, as shown in FIG. 11, the locking projection 25 includes a locking plate 26, a locking plate 26, and a locking piece that protrude substantially inward from the front end edge of the locking piece 24. And a triangular plate-like locking reinforcement portion 27 that connects the two.

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

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

  As shown in FIG. 14, the short side upper frame 32 includes a short side upper rib 38 protruding inward from the upper side of the short side base plate 31 and a predetermined distance downward from the short side upper rib 38. And a short-side-side upper frame lower rib 39 provided with a gap therebetween. Further, short side upper frame reinforcing ribs 40 are provided to connect the lower surface of the short side upper rib 38 and the upper surface of the long side upper frame lower rib 18. In this embodiment, the protrusion length from the short side base plate 31 of the short side upper frame lower rib 39, the short side lower rib 33, and the short side rib 35 is the same. 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.

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

  And after raising the long side wall portion 7 as shown in FIG. 3, the insertion projection 41 is inserted into the insertion hole portion 22 by raising the short side wall portion 8 as shown in FIG. A peripheral portion of the insertion protrusion 41 (a rib connecting the return rib 37, the insertion auxiliary portion 43, and the short side rib 35) is supported by the opening peripheral edge of the insertion hole 22. ing.

  Further, immediately before the short side wall portion 8 is set to the upright position, the outer side surface portion (return rib 37; see FIG. 13) of the short side wall portion 8 is the locking protrusion 25 of the long side wall portion 7. However, when the locking piece 24 is elastically deformed, the short side wall portion 8 can be displaced to the standing position as it is. Then, when the short side wall portion 8 is displaced to the standing position beyond the locking projection 25, the locking piece 24 returns to its original posture by its own elastic force, and the locking projection 25 (the locking plate) 26) substantially contacts the inner surface of the short side wall 8 (short side rib 36) to support the short side wall 8 (to prevent the short side wall 8 from falling down). ing.

  The distance between the pair of short side base parts 6 is longer than twice the height (vertical width) of the short side wall part 8 (short side base plate 31). For this reason, as shown in FIG. 3, the height of the laying position of a pair of short side wall part 8 is prepared. Furthermore, the distance between the pair of long side base portions 5 is slightly longer than twice the height (vertical width) of the long side wall 7 (long side base plate 11). For this reason, as shown in FIG. 2, the height of the laying position of a pair of long side wall part 7 aligns. Moreover, the upper side part of the long side base part 5 is located above the upper surface of the long side wall part 7 in the laying position.

  Now, the side wall heat insulation accommodation part 53 which accommodates the side wall heat insulation member 51 is provided in the inner surface side of the long side wall part 7 and the short side wall part 8 of this embodiment. As shown in FIG. 7, the long side wall portion 7 is on the inner surface side of the long side base plate 11, the long side upper frame lower rib 18 of the long side upper frame portion 12, 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 a side wall heat insulating accommodation portion 53. Hereinafter, the side wall heat insulating accommodation portion 53 of the long side wall portion 7 is also referred to as a “long side side heat insulation housing portion 54”, and the long side upper frame lower rib 18 that defines the outer periphery of the long side wall heat insulation housing portion 54. The long side lower rib 13 and the pair of left and right long 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 heat insulation housing portion 54 are partitioned by a wall portion (constituting 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 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, with respect to the short side wall portion 8, the inner side of the short side base plate 31, the short side upper frame lower rib 39 of the short side upper frame portion 32, A region surrounded by the side-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 accommodation portion 53. Hereinafter, the side wall heat insulation accommodating portion 53 of the short side wall portion 8 is also referred to as a “short side wall heat insulation accommodation portion 57”, and the short side upper frame lower step rib 39 that defines the outer periphery of the short side wall heat insulation accommodation portion 57, The short side lower rib 33 and the pair of left and right short side ribs 35 are also referred to as “short side side ribs 58”. Furthermore, the side wall heat insulating member 51 attached to the short side wall portion 8 is also referred to as a “short 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 wall 7 and the short side wall 8. It is configured in the shape of a non-perforated plate with no holes. That is, the long side wall insulating portion 54, the short side wall heat insulating housing portion 57, and the long side wall portion 57 provided on the inner surface side of the long side wall portion 7 and the short side wall portion 8. 7 and a hole portion that communicates with the outer surface side of the short side wall portion 8 is not formed.

  Further, as shown in FIGS. 5, 12, 25, and 26, the long side sidewall insulating portion 54 in the thickness direction of the long side wall 7 and the short side wall 8, and the short side The depths of the side wall heat insulating accommodation portions 57 (the long side side ribs 55 and the projection lengths of the short side side ribs 58 from the long side base plate 11 and the short side base plate 31) are long. It is configured to be substantially the same as or slightly deeper (longer) than the thickness of the side-side side wall heat insulating member 56 and the short side-side side wall heat insulating member 59. That is, the long side wall insulating member 56 and the short side wall heat insulating member 59 are configured to be within the thickness range of the long side wall 7 and the short side wall 8. In the present embodiment, the long side wall portion 56 and the short side wall heat insulating member 59 are attached to the long side wall portion 7 and the short side wall portion 8 while being attached to the long side wall portion. 7 and the short side wall portion 8 are configured to be displaceable between a standing position and a laying position.

  Further, as shown in FIGS. 7 and 14, the inner side of the long side wall 7 and the short side wall 8 is located on the inner side of the long side wall rib 55 and the short side wall rib 58. An auxiliary rib 60 having a short protruding length is provided. On the other hand, as shown in FIGS. 9 and 16, the long side wall heat insulating member 56 and the short 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, the auxiliary rib 60 includes a plurality of auxiliary ribs that extend in the left-right direction and a plurality of auxiliary ribs that extend in the vertical direction. In the present embodiment, the auxiliary rib 60 includes the long side wall portion 7 and the upper side portion of the short side wall portion 8 (the long side upper frame portion 12 and the short side upper frame portion 32), and In the vicinity of the left and right side portions (long side side ribs 15 and short side side ribs 35), in the vicinity of the center and lower sides of the long side side wall portion 7 and short side wall portion 8. It is more densely provided.

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

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

  The locking portion 64 of the long side lower rib 13 and the short side lower rib 33 is above the tip (inner end) of the upper surfaces of the long side lower rib 13 and the short 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 projecting length than the long-side surrounding rib 55 and the short-side surrounding rib 58 as described above. For this reason, in the thickness direction of the long side wall portion 7 and the short side wall portion 8, the auxiliary rib 60 has the locking portions 64 and the other locking portions 64 so that the positions of the locking portions 64 and the other locking portions 64 are aligned. The locking portion 64 is provided at the distal end portion of the extending portion 65 provided so as to extend a part of the distal end portion of the auxiliary rib 60.

  On the other hand, as shown in FIG. 8 and FIG. 15, the side wall heat insulating member 51 (long side wall side heat insulating member 56 and short side wall side heat insulating member 59) is covered 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 (extension portion 65) of the auxiliary rib 60. ing. As shown in FIG. 4, FIG. 26, and the like, the extension portion 65 is inserted into the locking hole 67 in the mounting state of the side wall heat insulating member 51 on the long side wall portion 7 and the short side wall portion 8. It is comprised so that.

  Further, with respect to the long side wall insulating member 56, as shown in FIG. 8, on the inner side surface of the long side wall heat insulating member 56, the locking hole 67, the inner wall 23, and the long side side lower rib 13 are respectively provided. The locked portion 66 is configured by a concave portion (step portion) provided at an adjacent position. Further, as shown in FIG. 15, the short side wall heat insulating member 59 is located at a position adjacent to the locking hole 67 and the short side lower rib 33 on the inner side surface of the short side wall heat insulating member 59. The locked portion 66 is configured by the provided concave portion (step portion). Thereby, even if the latching | locking part 64 is provided in the range of the depth of the side wall heat insulation accommodating part 53, and the thickness of the side wall heat insulation member 51 is comprised substantially the same as the depth of the side wall heat insulation accommodating part 53, The locking part 64 and the locked part 66 can be reliably locked.

  Moreover, although illustration is abbreviate | omitted, in the space 68 (refer FIG. 10) of the inner wall part 23 in which the latching piece 24 was provided in the long side wall part 7, and the long side base board 11 (refer FIG. 10), it is a side wall heat insulation member. As with 51, a gap heat insulating member made of expanded polypropylene is attached. The gap heat insulating member is attached to the long side wall portion 7 by being press-fitted from a side opening that communicates with the space.

  As shown in FIG. 18, lattice-shaped bottom ribs 71 are provided on the top surface of the bottom wall portion 4 of the bottom wall constituting portion 3. Further, each long side base portion 5 is provided with a base heat insulating accommodation portion 72 that opens to the inner peripheral side of the bottom wall constituting portion 3 and accommodates the base corresponding portion 78 in the thickness direction of the long side base portion 5. . Further, in each of the long side base portions 5, a base heat insulating accommodation portion 72 is provided in a portion corresponding to the long side bearing portion 9 in the longitudinal direction and on both sides in the longitudinal direction of the long side base portion 5. The inner wall remaining portion 73 is not formed. Each long side base portion 5 of the present embodiment is provided with long side bearing portions 9 at five locations while being spaced apart from each other in the longitudinal direction of the long side base portion 5, and each inner wall remaining portion 73. The base heat insulation accommodating parts 72 are provided at six locations between the two sides of the long side base part 5 and the inner wall remaining part 73. In addition, a base rib 74 that protrudes inward and extends up and down is provided on the surface of the base heat insulation housing portion 72 facing the inner peripheral side of the bottom wall constituting portion 3.

  Further, as shown in FIG. 19, on the lower surface side of the bottom wall constituting portion 3, when the folding container 1 is installed on the floor surface, an inner peripheral support portion 75 that is supported in contact with the floor surface and in an assembled state. When certain folding containers 1 are stacked (stacked) as shown in FIG. 24, the upper side parts (long side upper side ribs 17 and short side side upper side ribs 38) of the side folding parts 1 and 8 of the lower side folding container 1 are stacked. ) And an outer peripheral support portion 76 that is supported in contact with the outer periphery. The outer peripheral support portion 76 is provided in a range in which the long side base portion 5 and the short side base portion 6 are provided on the upper surface side of the bottom wall constituting portion 3, and has a bottom wall configuration more than the outer peripheral support portion 76. A portion on the inner peripheral side of the portion 3 is configured as an inner peripheral support portion 75. For this reason, when the folding container 1 in an assembled state is stacked, the inner circumferential support part 75 is inserted into the inner circumferential side of the side wall parts 7 and 8 of the lower folding container 1, and the side wall part 7, 8 is configured to be in contact with or close to the inner surface (the inner edges of the long-side upper frame 12 and the short-side upper frame 32).

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

  As shown in FIGS. 21 and 22, a bottom groove 79 into which the bottom rib 71 is fitted is provided on the lower surface side of the bottom wall corresponding portion 77. Moreover, as shown in FIG. 20 etc., the base groove part 80 in which the base rib 74 fits is provided in the outer surface side of the base corresponding | compatible part 78. 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, so that the bottom wall corresponding portion is inserted. 77 is installed above the bottom wall portion 4 and in a region surrounded by the long side base portion 5 and the short side base portion 6, and the base corresponding portion 78 is accommodated in the base heat insulating accommodation portion 72. A 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 accommodation 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. 78 is basically configured so as not to protrude toward the inner peripheral side of the bottom wall constituting portion 3 from the inner wall remaining portion 73.

  Further, in the present embodiment, as shown in FIGS. 3 and 23, the four insertion protrusions 41 provided corresponding to both side portions of the short side wall portion 8 are arranged on the uppermost side, and the short side The insertion protrusion 41 provided in the vicinity of the upper end of the side portion of the side wall portion 8 is the middle length of the five long side bearing portions 9 in a state where the short side wall portion 8 is in the sleeping position. It arrange | positions so that the inner wall residual part 73 corresponding to the long side bearing part 9 adjacent to the side bearing part 9 may contact | abut or adjoin.

  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 disposed above the outer peripheral support portion 76 is the inner peripheral support. Are located above the lower surface of the bottom wall corresponding portion 77 disposed above the portion 75 and below the upper surface of the bottom wall corresponding portion 77, and 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 constituting portion 3 with respect to the inner surface of the base corresponding portion 78 at a portion corresponding to the lower side of the base corresponding portion 78. A lower projecting portion 81 (a portion with a dotted pattern in FIG. 22) is provided.

  On the other hand, as shown in FIG. 26, the bottom wall constituting portion 3 includes an overhang accommodating portion 82 for accommodating the lower overhang portion 81 on the upper surface side thereof. Further, as shown in FIGS. 19 and 26, the bottom wall constituting portion 3 is provided on the lower surface side of the bottom wall constituting portion 3 by providing an overhang accommodating portion 82, so that the inner peripheral support portion 75 side to the outer peripheral support portion 76 side. The lower projection 83 is provided as a secondary projection so as to protrude from the center.

  On the other hand, as described above, in the present embodiment, as shown in FIGS. 4, 5, etc., the notch portion is formed in the long side upper rib 17 of the long side upper frame portion 12 of the long side wall portion 7. 19 is provided at the boundary between the upper side and the inner surface of the long side wall portion 7 (inward of the long side upper rib 17 and above the long side upper frame lower rib 18) (hereinafter referred to as the lower side rib 18). , Referred to as “allowable recess 84”). Then, as shown in FIG. 26, when the folding containers 1 in an assembled state are stacked, the lower convex portion 83 of the upper folding container 1 is accommodated in the allowable concave portion 84 of the lower folding container 1. It is configured.

  Moreover, as shown in FIG. 17 etc., the concave handle part 85 is provided in the center lower part of each short side part among the outer peripheral surfaces of the bottom wall structure part 3, respectively. Furthermore, as shown in FIG. 13 etc., the assistance recessed part 86 is provided in the center of the upper side part among the outer surfaces of each short side wall part 8. As shown in FIG. As shown in FIGS. 24 and 25, when the folding containers 1 in an assembled state are stacked, the handle 85 of the upper folding container 1 and the assistance recess 86 of the lower folding container 1 are vertically moved. It is comprised so that it may adjoin. With this configuration, even if the vertical widths of the handle portion 85 and the assist recess portion 86 are shortened, the handle portion 85 and the assist recess portion 86 are connected to ensure a clearance enough to insert a fingertip. Is possible. Accordingly, it is possible to lift the upper folding container 1 by placing a finger on the lower surface side of the bottom wall constituting part 3 of the upper folding container 1 via the handle portion 85 and the assistance recess 86.

  As described above in detail, according to the present embodiment, the side wall heat insulating member 51 is mounted on the inner surface side of the long side wall portion 7 and the short side wall portion 8, and the upper surface of the bottom wall constituting portion 3. The bottom wall heat insulating member 52 is mounted on the side, and the long side wall 7 and the short side wall 8 are placed in the standing position and the laying position with the heat insulating members 51 and 52 mounted. It is configured to be displaceable. For this reason, while ensuring the intensity | strength of the folding container 1 with the container main body 2 comprised with a non-foaming polypropylene, the side wall heat insulation member 51 and the bottom wall heat insulation member 52 which are comprised with a foamed polypropylene are used. Heat insulation and heat retention can be improved. Furthermore, since the side walls 7 and 8 are configured as the folding container 1 that can be displaced between the standing position and the laying position, the folded state is set in the non-use state in which the article is not accommodated. The transport / storage efficiency of the folding container 1 can be dramatically improved. In particular, since the side walls 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 folding container 1 in the assembled state is to be folded. It is not necessary to do such work. For this reason, while improving the workability | operativity at the time of assembling or folding the folding container 1, management of the folding container 1 (heat insulating members 51 and 52) at the time of storing the folding container 1 in a folded state is relatively. It can be easy.

  Further, a side wall heat insulating accommodation portion 53 capable of accommodating the side wall heat insulating member 51 is provided on the inner surface side of the side wall portions 7 and 8. In particular, in this embodiment, the depth of the side wall heat insulating accommodation 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 within the thickness range of the side wall portions 7 and 8, The entire side wall insulating member 51 is accommodated. For this reason, 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 increases, the outer dimension of the folding container 1 increases, leading to a decrease in the efficiency of transporting and storing the folding container 1, or the inner volume of the folding container 1 is reduced. Thus, it is possible to suppress a situation in which the transportation / storage efficiency of the article is reduced.

  Furthermore, the thickness of the side wall of the folding container 1 is made as thin as possible, so that the side wall parts 7 and 8 can be made relatively smooth (the bottom wall constituting part 3 even when the side wall heat insulating member 51 is attached to the side wall parts 7 and 8. In addition, the folding container 1 can be displaced to the laying position (without interfering with the other side wall portions 7 and 8), and the height of the folded folding container 1 can be made as low as possible.

  In addition, when the side wall heat insulating accommodation portion 53 does not protrude inward from the inner surfaces of the side wall portions 7 and 8, when the folding container 1 is folded or assembled, the side wall heat insulating accommodation portion 53 is first set to the upright position during assembly. When folded, the long side wall heat insulating member 56 of the long side wall portion 7 that is set to the laying position later comes into contact with the short side wall portion 8 that is displaced between the standing position and the laying position. It is possible to suppress a situation in which the side-side side wall heat insulating member 56 is damaged, or the workability of folding and assembling is reduced.

  In addition, the long side base plate 11 and the short side base plate 31 constituting the outer peripheral surface of the folding container 1 of the long side wall 7 and the short side wall 8 are non-porous plates. It is configured. For this reason, for example, in the long side side wall heat insulating housing portion 54 and the short side wall side heat insulating housing portion 57, there are provided holes that penetrate in the thickness direction of the long side wall portion 7 and the short side wall portion 8. By doing so, it is possible to avoid such a situation that the heat insulating property of the side wall of the folding container 1 is deteriorated, or foreign matters accumulate on the inner periphery of the hole and the back side of the side wall heat insulating member 51 to deteriorate the sanitary surface. it can.

  In addition, the side wall parts 7 and 8 of this embodiment form a thickness on the side wall parts 7 and 8, and various ribs for improving the strength of the side wall parts 7 and 8 are provided on the long side base plate. 11 and protrudes inward from the inner surface of the short side base plate 31. That is, the long-side side wall heat-insulating housing portion is constituted by the long-side upper frame lower step rib 18 projecting inward from the long-side base plate 11, the long-side lower-side rib 13, and the pair of long-side side ribs 15. The long-side surrounding rib 55 that defines the outer periphery of the short-side base plate 31 can be configured, and the short-side upper frame lower step rib 39, the short-side lower-side rib 33, and the pair The short-side-side surrounding ribs 58 that define the outer periphery of the short-side-side side wall heat insulating housing portion 57 can be configured by the short-side-side side ribs 35.

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

  Further, since the protruding length of the auxiliary rib 60 is configured to be shorter than the surrounding ribs 55 and 58, the side wall heat insulating member 51 does not need to be divided at the auxiliary rib 60. Therefore, it is possible to reduce the number of pieces of the side wall heat insulating members 51 attached to the side wall portions 7 and 8 (in this example, one piece), and workability when the side wall heat insulating members 51 are attached and detached. The improvement etc. can be aimed at.

  In addition, the auxiliary rib 60 is located in the vicinity of the upper side portions of the side wall portions 7 and 8 and in the vicinity of the left and right side portions than the central portion of the side wall portions 7 and 8 and the vicinity of the lower side portions of the side wall portions 7 and 8. Are also densely arranged. For this reason, the deformation of the side wall portions 7 and 8 can be effectively suppressed, and as a result, the fear 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 protrude inward from the inner surfaces of the long-side base plate 11 and the short-side base plate 31. . Thereby, since it is not necessary to provide various ribs on the outer surface side of the long side wall portion 7 and the short side wall portion 8, the outer surfaces of the long side wall portion 7 and the short side wall portion 8 are 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, with respect to the inner surface of the side wall of the folding container 1, the side wall heat insulating member 51 can be attached to make the surface substantially flat, and when the article is put in and out, the article is caught by the various ribs of the side wall portions 7 and 8. 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.

  In addition, according to the present embodiment, the side wall heat insulating member 51 is locked by locking the locking portion 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 walls 7 and 8. For this reason, the side wall heat insulating member 51 can be attached to and detached from the side wall portions 7 and 8 relatively easily, and the workability of attaching and detaching the side wall heat insulating member 51 can be improved. Furthermore, the side wall heat insulating member 51 can be attached / detached relatively easily, so that the portion of the side wall portions 7 and 8 where the side wall heat insulating member 51 is mounted and the side wall heat insulating member 51 are cleaned, ventilated and dried, etc. Maintenance, replacement of the side wall heat insulating member 51 and the like can be performed relatively easily, so that hygiene and convenience can be improved. Moreover, since it is not necessary to use an adhesive agent etc. for fixing to the side wall parts 7 and 8 of the side wall heat insulating member 51, when food is stored in the folding container 1, the food can be safely transported and stored.

  Furthermore, 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 formed by the side wall heat insulating member 51 mounted on the side wall portions 7 and 8. It is comprised so that it may be settled in the range of thickness. For this reason, the situation that the latching | locking part 64 protrudes to the inner peripheral side of the folding container 1 rather than the inner surface of the side wall heat insulation member 51, and the situation where it contacts with the articles | goods accommodated in the folding container 1 can be avoided. Accordingly, it is possible to prevent a situation in which the housed article and the locking portion 64 are in contact with each other and the article and the locking portion 64 are damaged.

  Further, according to the present embodiment, in the bottom wall constituting portion 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 upward from the bottom wall portion 4. The bottom wall heat insulating member 52 (base corresponding part 78) is also attached to the inner surface side of the protruding long side base part 5. For this reason, the situation where heat insulation property falls in the long side base part 5 which protrudes upwards rather than the short side base part 6 can be suppressed, and the heat retention of the folding container 1 can be improved. .

  Furthermore, since the bottom wall corresponding part 77 and the base corresponding part 78 are integrally formed, for example, compared with the case where it is comprised separately, the attachment or detachment operation | work of the bottom wall heat insulation member 52 with respect to the bottom wall structure part 3 is carried out. It is possible to improve the performance. In addition, management when storing the bottom wall heat insulating member 52 before being attached to the container main body 2 in the manufacturing process of the folding container 1 can be made relatively easy.

  In addition, when a force that squeezes upward acts on the end portion of the bottom wall corresponding portion 77 (for example, when it is lifted by adhering to the stored article), it is integrated with the bottom wall corresponding portion 77. The base-corresponding portion 78 that is formed on the base-side corresponding to the long-side-side base portion 5 positioned on the side of the base-corresponding portion 78 and the lower-side portion of the long-side-side side wall portion 7 positioned above the base-corresponding portion 78 Supported in contact. Thereby, even if it does not provide the latching means etc. which regulate the upward displacement of the bottom wall corresponding | compatible part 77 with respect to the bottom wall part 4, the upward displacement of the bottom wall corresponding | compatible part 77 can be suppressed. Further, for example, a latching means for restricting the upward displacement of the bottom wall corresponding part 77 with respect to the bottom wall part 4 is provided, and the latched object that is latched by the locking means with respect to the bottom wall corresponding part 77. When the locking means is provided, the article stored in the folding container 1 and the locking means may be damaged by direct or indirect interference, or when the bottom wall heat insulating member 52 is mounted, the locking means And the situation that the bottom wall heat insulating member 52 is damaged can be avoided. Furthermore, the manufacturing workability of the bottom wall constituting portion 3 and the bottom wall heat insulating member 52 can be improved while suppressing the complexity of the mold for molding the bottom wall constituting portion 3.

  Further, the bottom rib 71 can improve the strength of the bottom wall constituting portion 3. Furthermore, 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 positional displacement of the bottom wall heat insulating member 52 with respect to the bottom wall constituting portion 3 can be prevented more reliably. can do.

  In addition, a lower projecting portion 81 configured to project the outer peripheral surface of the bottom wall corresponding portion 77 below the base corresponding portion 78 at the connecting portion between the bottom wall corresponding portion 77 and the base corresponding portion 78. By providing, the strength of the connecting portion can be improved. In particular, when the bottom wall insulating member 52 is attached to the bottom wall constituting portion 3 or when the bottom wall insulating member 52 is stored alone, the connecting portion is used. Can be prevented from being damaged.

  Further, the bottom wall constituting portion 3 is provided with an overhang accommodating portion 82 for allowing the lower overhang portion 81 of the bottom wall heat insulating member 52 to be installed, and on the bottom surface side of the bottom wall constituting portion 3, A lower convex portion 83 formed as a secondary by providing an overhanging accommodating portion 82 on the upper surface side of the wall constituting portion 3 is provided. The lower convex portion 83 is provided so as to protrude 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 provided. There is concern that the portion 83 interferes with the upper side portion of the long side wall portion 7 of the lower folding container 1.

  In this respect, in the present embodiment, the upper side portion of the long side wall portion 7 has an allowable concave portion 84 (notch portion) that accommodates the lower convex portion 83 of the upper folding container 1 when stacking the folding containers 1 in the assembled state. 19). Therefore, the folding containers 1 in the assembled state can be reliably and stably stacked.

  In addition, the depth of the base heat insulation 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 on the long side base portion 5. It is comprised so that it may be settled in the range of thickness. For this reason, when folding or assembling the folding container 1, it is possible to suppress a situation in which the displaced short side wall 8 contacts the base corresponding part 78. Therefore, it is possible to improve workability when folding or 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 set in the assembled state, the long side wall portion 7 is set in the standing position, and then the short side wall portion 8 is set in the standing position. When the side wall portion 7 is not completely in the standing position, when the short side wall portion 8 is displaced to the standing position, the upper end of the side portion of the short side wall portion 8 or the vicinity thereof The part (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 wall portion 7. Concerned.

  In this regard, according to the present embodiment, the uppermost insertion protrusion 41 (hereinafter referred to as the “upper insertion protrusion 41”) among the insertion protrusions 41 provided on the side part of the short side wall part 8 at the laying position. And the inner wall remaining portion 73 located below the long-side bearing portion 9 of the long-side base portion 5 is configured to come into contact with or be close to each other. With this configuration, when the short side wall portion 8 in the laying position is displaced to the standing position, the “upper insertion protrusion 41” of the short side wall portion 8 includes the inner wall remaining portion 73 and the long side bearing. It passes through the side of the part 9. For this reason, for example, when the long side wall portion 7 is not completely in the standing position and is slightly tilted inward, if the short side wall portion 8 is displaced to the standing position side, the short side The “upper insertion protrusion 41” of the side wall portion 8 is connected to the long side bearing portion 9 and is inclined so as to protrude inward from the long side bearing portion 9. 14 will be contacted. Therefore, when the short side wall portion 8 is displaced to the standing position side as it is, the long side wall portion 7 is moved by the short side wall portion 8 (the upper insertion protrusion 41) in the long side hinge portion 14. It looks like being pushed to the standing position side. When the “upper insertion protrusion 41” of the short side wall portion 8 passes the side of the long side hinge portion 14 of the long side wall portion 7, the long side wall portion 7 stands up completely. Will be the position. As a result, it is possible to avoid a situation in which the upper end portion of the side portion of the short side wall portion 8 or the “upper insertion protrusion 41” is in contact with the long side wall heat insulating member 56 when the folding container 1 is assembled. It is possible to prevent damage to the long-side side wall heat insulating member 56 and to improve the assembly workability.

  For example, when the folding container 1 is in a folded state, or when the short side wall 8 at the laying position is set to the standing position, the short side wall 8 is one long side base 5. When it can be displaced so as to tilt to the side, the upper end portion of the side portion of the short side wall portion 8 or the vicinity thereof may contact the base corresponding portion 78 of the bottom wall heat insulating member 52. Concerned. In this regard, in the present embodiment, the inner wall is disposed so that the tilting displacement of the short side wall portion 8 can be brought into contact with the upper end portion of the side portion of the short side wall portion 8 at the laying position or the vicinity thereof. It can be regulated by the remaining portion 73. For this reason, when the folding container 1 is put into the assembled state, the upper end portion of the side portion of the short side wall portion 8 that is about to be displaced from the laid position to the standing position side is pierced into the base corresponding portion 78. It is possible to prevent the situation of being touched (hooked). Further, when the folded folding container 1 is transported, a situation in which the upper end portion of the side portion of the short side wall portion 8 placed in the laying position comes into contact with the base corresponding portion 78 due to vibration of the folding container 1 or the like. Can be prevented. Therefore, it is possible to improve the assembly workability of the folding container 1 and to suppress damage to the base corresponding part 78.

  Further, in the present embodiment, a configuration (hereinafter also referred to as “lock mechanism”) that prevents the short side wall portion 8 in the standing position from tilting inward is provided on the long side wall portion 7. It is constituted by a locking piece 24 and a locking projection 25. For this reason, 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 wall portion 8 so as to include a lock bar protruding from the side portion of the short side wall portion 8. Further, it is possible to reduce the size. Therefore, in the short side wall portion 8 and the long 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. Widely secured. As a result, a dramatic improvement in heat insulation can be achieved.

  Further, the locking piece 24 is surrounded by a substantially U-shaped slit provided on the inner wall portion 23 that is spaced apart from the long side base plate 11 inward by a predetermined distance and extends substantially parallel to the long side base plate 11. It is comprised by the part which was made. For this reason, simplification of the structure of the locking piece 24 can be achieved. On the other hand, there is a concern that the formation of a slit that penetrates the inner wall portion 23 causes a decrease in heat insulation. On the other hand, in this embodiment, the long side base plate 11 is provided outside 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. A region (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 communicate directly with each other through the slit, and a decrease in heat insulation can be suppressed. Further, the locking piece 24 can be protected by the long side base plate 11.

  In particular, in this embodiment, a gap heat insulating member made of foamed polypropylene is attached to the space 68 between the inner wall portion 23 provided with the locking piece 24 and the long side base plate 11. For this reason, the heat insulation of the area | region enclosed by the inner wall part 23 and the long side base board 11 can be improved dramatically, and the heat insulation in the peripheral part falls by providing the locking piece 24. Can dispel concerns.

  In addition, it is not limited to the description content of the said embodiment, For example, you may implement as follows. 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 to be able to be stacked even in a folded state as shown in FIG. When the folding containers 1 in a folded state are stacked, the outer peripheral support part 76 (see FIG. 19) of the upper folding container 1 is in contact with and supported by the upper surface of the long side base part 5 of the lower folding container 1. In addition, 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 wall portion 7 at the laying position. Arranged in space. At this time, the lower convex portion 83 of the upper folding container 1 is inserted into the base heat insulating housing portion 72 of the lower folding container 1.

  Therefore, if the base corresponding part 78 of the bottom wall heat insulating member 52 is accommodated up to the vicinity of the upper end of the base heat insulating accommodating part 72, the folding containers 1 in the folded state as described above are stacked. There is a concern that the base-corresponding portion 78 of the lower folding container 1 is crushed by the lower convex portion 83 of the upper folding container 1 and is plastically deformed.

  In this respect, 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 accommodation portion 72). 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 housing portion 72, as shown in FIGS. 4 and 26, when the folding container 1 is in an 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 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 wall portion 7 bulges downward from the lower side portion and the long side wall portion 7 is in the standing position, the long side base It is good also as providing the gap blockade protrusion 91 inserted in the base heat insulation accommodating part 72 (the range below the upper side part of the long side base part 5 and the upper part of the base corresponding | compatible part 78) of the part 5. FIG. Furthermore, 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 that is inserted inside the gap closing projection 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 (the bulging portion 92) can be brought closer to each other. The situation where the heat loss from the site | part in which the heat insulation member between the wall heat insulation member 52 and the side wall heat insulation member 51 is not provided becomes large can be suppressed.

  (B) Although not specifically 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. The lid member may include a lid body having a substantially rectangular shape in plan view and a lid heat insulating member attached to the lower surface side of the lid body. For example, when the lid main body is put on the folding container 1 in the assembled state, the lid main body is put on the outer peripheral portion of the lid lower surface that is supported in contact with the upper sides of the side walls 7 and 8 and the folding container 1 in the assembled state. In this case, it may be inserted into the inner peripheral side of the side wall portions 7 and 8, and may be provided with an inner peripheral portion of the lid lower surface that is in contact with or close to the inner surface of the side wall portions 7 and 8. In addition, in the inner peripheral portion of the lid lower surface, when a lid heat insulation housing portion capable of accommodating the lid heat insulation member is provided and the lid member is placed on the folding container 1 in an assembled state, the lower surface of the lid heat insulation member is the side wall portion 7, You may comprise so that it may be located below the upper side part of 8 and the upper side part of the side wall heat insulation member 51 further. In this case, the side wall heat insulating member 51 and the lid heat insulating member can be made as close as possible, and a situation in which heat loss from a portion where the heat insulating member is not provided becomes large can be suppressed.

  The inner peripheral portion of the lower surface of the lid includes a lid surrounding portion that defines the outer periphery of the lid heat insulating housing portion, a lid auxiliary rib that is provided on the inner peripheral side of the lid surrounding portion, and has a shorter protruding length than the lid surrounding portion. The lid heat insulating member may include a lid groove portion into which the lid auxiliary rib is inserted and a lid latched portion to be latched with the lid latching portion. Good. The lid heat insulating member can be protected by the lid surrounding portion. For example, when the force that causes the folding container 1 and the lid member to be displaced in the horizontal direction is applied, the lid heat insulating member is damaged. Can be prevented. In addition, when attaching and detaching the lid member, for example, compared to 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 together (a lid concave portion capable of accommodating the inner peripheral support portion 75 of the container body 2 and the lower convex portion 83 is provided on the upper surface side of the lid member. ), The lid members may be stacked together, or the lid member can be stacked on the folding container 1 in a folded state without misalignment (with respect to the lower surface side of the lid member, As in the lower convex portion 83 of the bottom wall constituting portion 3, a portion to be inserted into the upper portion of the base heat insulating accommodating portion 72 may be provided).

  In addition, the structure of a cover member is not specifically limited, It can design suitably. Furthermore, it is good also as providing a handle recessed part with respect to the site | part adjacent to the upper part of the assistance recessed part 86 of the short side wall part 8 in the state which covered the folding container 1 among the outer peripheral surfaces of a cover member. In this case, even if the vertical widths of the assist recess 86 and the handle recess are shortened, the assist recess 86 and the handle recess are connected to each other, and it is possible to secure a clearance enough to insert the fingertip. Accordingly, it is possible to lift the lid member by placing a finger on the lower surface side of the lid member via the assistance concave portion 86 and the handle concave portion.

  (C) In the above embodiment, after the pair of short side wall portions 8 is placed in the laying position above the bottom wall constituting portion 3, the pair of short side wall portions 8 are positioned above the pair of short side wall portions 8 in the laying position. The pair of long side wall portions 7 are configured to be laid down. However, after the pair of long side wall portions 7 is first placed above the bottom wall constituting portion 3, the pair of short side wall portions 7 are laid down. You may comprise so that the side wall part 8 can be made into a sleeping position. Moreover, in the said embodiment, in the folding state of the folding container 1, it is comprised so that the short side wall part 8 may not overlap vertically, and the long side wall part 7 may not overlap 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 housing portion 53, and the entire thickness of the side wall heat insulating member 51 falls 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 accommodation portion 53. Also in this case, the heat insulation 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 and the depth of the side wall heat insulating housing portion 53 substantially the same, the above effects are further exhibited, and the entire side wall heat insulating member 51 is made of the side wall heat insulating housing portion 53. By being 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 parts 7 and 8 by locking the locking part 64 and the locked part 66. It is good. For example, by attaching a mounting member (for example, umbrella-shaped or band-shaped) having locking means and locking means provided on the side wall parts 7 and 8 to the side wall parts 7 and 8, You may comprise so that the side wall heat insulation member 51 may be clamped and fixed between the parts 7 and 8 and an attachment member. Moreover, you may fix the side wall parts 7 and 8 and the side wall heat insulation member 51 using an adhesive agent.

  In addition, in the said embodiment, although the to-be-latched part 66 is provided by forming a recessed part in the inner surface side of the side wall heat insulation member 51, it is good also as omitting a recessed part. In this case, the locking portion 64 is locked in such a manner that the side wall heat insulating member 51 is compressed and recessed into the side wall heat insulating member 51. In addition, in the thickness direction of the side wall parts 7 and 8, it is also possible to comprise so that the latching surface of the latching | locking part 64 may become the same position as the inner surface of the side wall heat insulation member 51. When protruding from the inner surface of the member 51 and the inner surfaces of the side wall portions 7 and 8 toward the inner peripheral side of the folding container 1, the article accommodated in the folding container 1 comes into contact with the locking portion 64, and the article and the locking Since the risk of damaging the portion 64 increases, it is desirable that the locking portion 64 be accommodated within the thickness range of the side wall heat insulating member 51 and inside the side wall heat insulating accommodation portion 53.

  The side wall heat insulating member 51 is provided with a locking hole 67 (opening) through which the extending portion 65 that connects the auxiliary rib 60 and the locking portion 64 is inserted. It is good also as providing a slit instead of. In this case, the extending part 65 is inserted so as to push and widen the slit, and the locking part 64 is locked to the locked part 66.

  (F) In the above-described embodiment, the locking piece 24 and the locking projection 25 are provided on the long side wall portion 7 as a configuration (locking mechanism) for preventing the short side wall portion 8 from falling down. Although provided, the configuration of the lock mechanism is not particularly limited and can be designed as appropriate. However, it is desirable to minimize the area required for the installation of the lock mechanism and to ensure as large an area where the side wall heat insulating member 51 can be installed.

  Further, regarding 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, the concave portion corresponding to the portion where the locking piece 24 can be displaced. Alternatively, the side wall heat insulating member 51 and the bottom wall heat insulating member 52 may be made of a softer material. The gap heat insulating member can be omitted.

  (G) In the above embodiment, since the protruding length of the short side base 6 from the bottom wall 4 is short in the bottom wall constituting part 3, the short side base 6 is provided with the bottom wall heat insulating member 52. In the case where the projecting length of the short side base portion 6 is configured to be longer (for example, a configuration in which the short side wall portions 8 at the laying position are vertically stacked) Also, it is possible to provide the base heat insulating accommodation portion 72 in the short side base portion 6 and attach the bottom wall heat insulating member 52 (the base corresponding portion 78).

  Moreover, you may comprise so that a heat insulation member may be mounted | worn also with respect to the site | part below the long side bearing part 9 among the long side base parts 5. FIG. For example, a base heat insulating housing portion is provided also in a lower part of the long side bearing portion 9 so as to provide a concave portion in the inner wall remaining portion 73, and a heat insulating member accommodated in the base heat insulating housing portion is provided in the above embodiment. It is good also as providing so that it may connect with at least one of the bottom wall corresponding | compatible part 77 and the base corresponding | compatible part 78. FIG. Further, for example, a heat insulating member as a separate member is inserted 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 from the lower surface side of the bottom wall constituting portion 3. Further, a heat insulating member may be attached to a lower portion of the long side bearing portion 9.

  In the above-described embodiment, the bottom wall heat insulating member 52 is mounted on the upper surface side of the bottom wall constituting portion 3. For example, it is assumed that the folding container 1 is placed on the heat insulating member and transported. In this case, it is possible to embody the folding container 1 in which the bottom wall heat insulating member 52 is not attached.

  (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. Moreover, 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, foamed polystyrene, and foamed polyurethane.

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

Claims (4)

A bottom wall constituting part having a substantially rectangular plate shape in plan view;
Corresponding to each side part of the bottom wall constituent part, an upright position standing above each side part of the bottom wall constituent part, and a lay folded on the center part side of the bottom wall constituent part A container body comprising a side wall portion rotatably provided between positions;
A side wall heat insulating member made of a synthetic foam resin and mounted on the inner surface side of the side wall portion,
In a folding container comprising a synthetic resin foam and a bottom wall heat insulating member mounted on the upper surface side of the bottom wall constituent part,
The bottom wall constituent part and the side wall part are made of non-foamed synthetic resin,
The side wall portion is attached to the side wall heat insulating member, and the side wall portion is configured to be displaceable between the standing position and the laying position with the bottom wall constituting portion being attached to the bottom wall heat insulating member.
The bottom wall constituting portion includes a bottom wall portion having a substantially rectangular plate shape, and a base portion protruding upward along each side portion of the bottom wall portion,
A grid-like bottom rib is provided on the top surface of the bottom wall portion,
The bottom wall heat insulating member is
A bottom groove portion into which the bottom rib is fitted on the lower surface side, and a bottom wall corresponding portion mounted on the upper surface side of the bottom wall portion;
A base corresponding part to be mounted on the inner surface side of the base part,
The folding container, wherein the bottom wall corresponding part and the base corresponding part are integrally formed. On the lower surface side of the bottom wall constituting portion, when the folding container is installed on the floor surface, an inner peripheral support portion that is supported in contact with the floor surface and an assembled state in which all the side wall portions are in the standing position. When the folding containers in each other are stacked, an outer peripheral support part that is supported by contacting the upper side part of the side wall part of the lower folding container is provided,
The inner peripheral support portion is inserted into the inner peripheral side of the side wall portion of the lower folding container and contacts the inner surface of the side wall portion when the folding containers in the assembled state are stacked up and down. Or a close configuration,
Regarding the connecting portion between the bottom wall corresponding portion of the bottom wall heat insulating member and the base corresponding portion,
The lower surface of the base corresponding portion disposed above the outer peripheral support portion is higher than the lower surface of the bottom wall corresponding portion disposed above the inner peripheral support portion and from the upper surface of the bottom wall corresponding portion. Is also located below,
While connecting the outer peripheral surface of the bottom wall corresponding part and the inner surface of the base corresponding part,
The bottom wall heat insulating member causes the outer peripheral surface of the bottom wall corresponding portion to protrude from the inner surface of the base corresponding portion to the outer peripheral side of the bottom wall constituting portion at a portion corresponding to the lower side of the base corresponding portion. With a lower overhang provided
The bottom wall constituting portion includes an overhang accommodating portion for accommodating the lower overhanging portion on the upper surface side thereof, and the inner circumference is provided on the lower surface side of the bottom wall constituting portion by providing the overhang accommodating portion. A lower protrusion provided so as to protrude from the support portion toward the outer periphery support portion;
In the boundary portion between the upper side portion and the inner surface of the side wall portion, when the folding containers in the assembled state are stacked, an allowable concave portion capable of accommodating the lower convex portion of the upper folding container is provided. The folding container according to claim 1. The base portion includes a base heat insulating accommodation portion that opens to an inner peripheral side of the bottom wall constituting portion and accommodates the base corresponding portion in the thickness direction of the base portion.
The folding container according to claim 1 or 2, wherein a depth of the base heat insulating accommodation portion in a thickness direction of the base portion is configured to be deeper than a thickness of the base corresponding portion. The base portion connects the pair of first base portions provided along a pair of opposite side portions of the bottom wall portion and both ends of the pair of first base portions, respectively. A pair of second base parts provided along the side part of the bottom wall part,
The side wall includes a pair of first side walls connected to the first base parts and a pair of second side walls connected to the second base parts,
Each of the base portions includes a plurality of bearing portions that respectively support a plurality of shaft portions provided on the respective side wall portions,
The bearing portion of the first base portion is located above the bearing portion of the second base portion;
A pair of the second side wall portions are set to the laying position above the bottom wall portion, so that the first side wall portion is set to the laying position above the second side wall portion set as the laying position. In a possible configuration,
The first base portion includes an inner wall remaining portion in which the base heat insulating housing portion is not provided in the longitudinal direction of the first base portion, and the bearing portion is provided corresponding to the inner wall remaining portion,
The upper end portion of the side portion of the second side wall portion or the vicinity thereof is the inner wall remaining portion in which the bearing portion is provided correspondingly in a state where the second side wall portion is in the sleeping position. It is comprised so that it may contact | abut or adjoin, and the folding container of Claim 3 characterized by the above-mentioned.

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