JP2018203363A - Folded container - Google Patents

Abstract

To provide a folded container which prevents the tight adhesion between a stored object and an inner surface of a container, and which is hard to stick even when the volume of the stored object is expanded.SOLUTION: There is provided a folded container which comprises a bottom surface member, an upper frame member 3, two folded side plates 4 which are a pair of opposite side faces and both gate side plates 5 which are a pair of other opposite side faces and which is formed into a container state and a folded state. A partition wall 14 as a vertical wall positioned between adjacent ones of a plurality of stored objects in a stacked manner on at least one of the inner wall surfaces of the gate side plates 5 or at least one of the inner wall surfaces of the folded side plates 4 and projecting inward in the container state, and a sticking prevention wall 15 which makes a space between the outer surface and the inner wall surface of the outermost one of the stored objects are formed.SELECTED DRAWING: Figure 6

Description

  The present invention relates to a folding container that accommodates a plurality of rectangular accommodation items in a stacked state in the thickness direction and can be folded compactly in a state in which the accommodation items are not accommodated. More specifically, the present invention relates to a folding container that is built in a cooling device in a state in which a regenerator is accommodated as a stored item and is suitable for a purpose of cooling the regenerator.

  As a conventional folding container, for example, “transport container” described in Patent Document 1 can be cited. In the “transport container” of Patent Document 1, as shown in FIG. 1, a “supporting protrusion 17” (see [0033] of the same document) is provided on the inner wall surface on the short side. As a result, as described in [0034] of the same document, a substantially plate-shaped container can be inserted between the “supporting protrusions 17” and stored. A cold storage agent is also mentioned as an example of what is contained.

JP 2010-126234 A

  However, the conventional folding container described above has the following problems. If it is intended to cool the container together with the container (cold storage agent), a part of the container may stick to the container. Such sticking mainly occurs with respect to the outermost items stored in the “supporting protrusions 17”. This is because the container is in a state where there is nothing to block between the folded side plate (“13” in FIG. 1 of the same document) on the long side of the container. In addition, when the cool storage agent is cooled, volume expansion occurs due to freezing of the internal cool storage liquid. For this reason, it may be difficult to take out the cooled regenerator from the folding container.

  The present invention has been made to solve the above-described problems of the prior art. That is, an object of the present invention is to provide a folding container that prevents adhesion between the accommodated contents and the inner side surface of the container and prevents sticking even when the contents are expanded.

  The folding container according to one aspect of the present invention includes a rectangular bottom surface member, a rectangular frame-shaped upper frame member positioned above the bottom surface member, and parallel first first and second bottom surface members and the upper frame member that are positioned above and below each other. The first folding side plate and the second folding side plate that connect the sides and the opposite sides of each first side and have a hinge portion at an intermediate height position, and adjacent to each first side of the bottom member and the upper frame member A first folding side plate and a second folding side plate, each of which has a first tilt side plate and a second tilt side plate provided so as to be swingable with respect to either one of the second sides positioned above and below each other and the opposite side thereof; Are both flat, and the first and second folding side plates are in a state of standing, and the first folding side plate and the second folding side plate are both hinge portions. A folding container that folds in a direction in which the outer surfaces of the upper part and the lower part face each other and folds in a state in which the first and second side panels are laid inward. , At least one of both inner wall surfaces facing each other in the container state in the first tilt side plate and the second tilt side plate, or at least one of both inner wall surfaces facing each other in the container state in the first folding side plate and the second folding side plate , A partition wall that is a vertical wall that is positioned between adjacent ones of the stored items that are stacked and protrudes inward in a container state, and the outermost stored item that is stored in layers A vertical wall that protrudes inward in a container state, leaving a space between the outer surface of the object and the side wall surface that faces the outer surface of the inner wall surface. And it can prevent the wall in which is formed.

  In the folding container according to the above aspect, in the container state, flat containers having a thickness that is the same as or slightly thinner than the interval between the partition walls are arranged side by side in an upright state. That is, a plurality of items are accommodated in a stacked state in the thickness direction. Therefore, the contents are separated from each other by the partition wall, and the outer surface of the outermost contents is regulated by the sticking prevention wall. For this reason, the adhesion between the outermost container and the inner surface facing it is prevented. Therefore, even when the contents expand in the thickness direction due to cooling or the like, the outermost contents do not stick to the inner side surface.

  In the above aspect, the “first side” and the “second side” may be either a long side or a short side. The two side plates are provided so as to be swingable with respect to the second side of the bottom member and its opposite side, or are provided to be swingable with respect to the second side of the upper frame member and its opposite side. The partition wall and the sticking prevention wall are provided on at least one of the inner wall surfaces of the two side plates or at least one of the inner wall surfaces of the two folding side plates.

  In the folding container in the above aspect, the partition wall and the sticking prevention wall are formed on at least one of the first and second side walls, and the first folding side plate and the second folding side plate. An engagement portion that protrudes inward in the container state at at least one end position in the width direction of the side inner wall surface that is the inner wall surface, and fixes the first or second tilt side plate in the container state. And at least one of the first and second tilt side plates accommodates at least a part of the engaging portion in the container state and has a concave shape when viewed from the outer surface in the container state. An engaged portion and a partition wall that partitions the outer side in the width direction of the engaged portion are formed, and the sticking prevention wall is a width direction of the first folding side plate or the second folding side plate from the partition wall. It is preferably formed to protrude inwardly in.

  If it becomes like this, the stability of the attitude | position of a folding container is good in a container state. This is because the folding container is prevented from being folded by itself when the engaging portion of the folding side plate is hooked on the side plate. Here, in the container state, at least a part of the engaging portion is in a state of being housed in the engaged portion of the tilt side plate. Further, a sticking prevention wall is formed at a position protruding inward from the partition wall outside the engaged portion.

  The engaging portion in the aspect in which the engaging portion and the engaged portion are provided includes a base and a container state that protrudes inward in the width direction of the first folding side plate or the second folding side plate from the tip of the base. A claw-like portion that contacts the inner surface of the partition wall is formed at the wall, and the partition wall is formed with a concave portion that houses the base and is recessed when viewed from the outer surface side in the container state. It is desirable. If it becomes like this, the protrusion to the outward from the outer surface of the tilting side plate of the engaging portion is suppressed. Furthermore, since the partition wall in which the concave portion is formed is extended inward to form a sticking prevention wall, the strength reduction of the tilt side plate due to the formation of the concave portion is suppressed.

  In the aspect in which the engaging portion and the engaged portion are provided, the outer surface of the sticking prevention wall on the opposite side of the container side from the outermost surface in the width direction of the first tilt side plate or the second tilt side plate. It is desirable that the amount of dents be in the range of 0.5 to 3 mm. This is because securing the dent amount in this way prevents the sticking prevention wall from being caught on the folding side plate during the folding operation of the folding container. This significance is particularly significant when the folding side plate is formed with a ventilation window in the operation from the container state to the folded state.

  In the folding container according to any one of the above aspects, the amount of the container-side surface of the sticking prevention wall from the side inner wall surface in the container state is in the range of 2.5 to 6.5 mm. Is desirable. This is because if the amount of overhang is too small, prevention of adhesion between the contents and the inner surface is insufficient, while if the amount of overhang is too large, the compactness of the folding container is impaired.

  According to this configuration, there is provided a folding container that prevents adhesion between the accommodated contents and the inner side surface of the container and prevents sticking even when the contents are expanded in volume.

It is a perspective view which shows the whole structure of the folding container which concerns on embodiment. It is a top view of the folding container of FIG. It is the perspective view which looked at the tilt side plate which is one component of the folding container of FIG. 1 from the inner surface side. It is the perspective view which looked at the tilt side plate from the outer surface side. It is a perspective view which shows the folding state of the folding container of FIG. It is a perspective view which expands and shows a part of FIG. It is a perspective view which shows the state which cut | disconnected the folding container of FIG. 1 by the horizontal surface. It is a top view of the folding container of the cutting state shown in FIG. FIG. 9 is an enlarged view of a part of FIG. 8. It is a perspective view which expands and shows a part of tilt side plate of FIG. It is the expansion perspective view which looked at a part near the edge part of the folding side plate which is one component of the folding container of FIG. 1 from the inner surface side.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments embodying the present invention will be described below in detail with reference to the accompanying drawings. In this embodiment, the present invention is applied to the folding container 1 shown in FIG. The folding container 1 shown in FIG. 1 has a rectangular parallelepiped shape as a whole, and has an open top surface. The folding container 1 includes a bottom member 2, an upper frame member 3, a folding side plate 4, and a tilt side plate 5. The bottom member 2 is a member having an overall rectangular shape as shown in the plan view of FIG. 2, although it is not conspicuous in the perspective view of FIG. The upper frame member 3 is positioned above the bottom surface member 2 and is a frame-shaped member having an overall shape that is rectangular but has an open interior. As is apparent from FIG. 2, the “rectangular shape” in the present invention may have a shape in which four corners are rounded.

  Returning to FIG. 1, the side surface of the folding container 1 is composed of two folding side plates 4 and two tilt side plates 5. The two folding side plates 4 are arranged at the positions of both long sides of the rectangle as seen in the plan view of FIG. The folding side plate 4 has a configuration in which an upper plate 6 forming an upper half and a lower plate 7 forming a lower half are coupled by a hinge portion 8 at an intermediate height position. The upper end of the upper plate 6 is attached to the long side of the upper frame member 3. The lower end of the lower plate 7 is attached to the long side of the bottom member 2. Thereby, both long sides of the bottom member 2 and the upper frame member 3 are connected to each other by the folding side plate 4.

  The two tilt side plates 5 are arranged at the positions of both short sides of the rectangle as seen in the plan view of FIG. The tilt side plate 5 is shown in FIGS. 3 and 4 as a single unit. FIG. 3 is the inner surface side that is visible on the far side in FIG. FIG. 4 is the outer surface side that is visible on the near side in FIG. In the folding container 1 of FIG. 1, the upper side 9 of the tilt side plate 5 is attached to both short sides of the upper frame member 3. A hook hole 10 is formed at the lower end of the tilt side plate 5. As a result, in the state of FIG. 1, the lower side plate 5 is in a state where the lower end is fixed to the short side of the bottom member 2.

  As described above, the folding container 1 of FIG. 1 is a box-shaped container whose upper surface is an open surface. In the state of FIG. 1, the two folded side plates 4 are in a state where the upper plate 6 and the lower plate 7 form a flat plate shape. Further, the two tilt side plates 5 are both standing.

  In this folding container 1, by fixing the vicinity of the lower end of the tilt side plate 5 from the outside, the fixing of the tilt side plate 5 to the bottom member 2 can be released. As a result, the two side plates 5 can swing toward the inside of the folding container 1 around the short side of the upper frame member 3. Moreover, both the folding side plates 4 are in a state where they can be folded in a direction in which the outer surfaces of the upper plate 6 and the lower plate 7 face each other.

  In this way, the folding container 1 can be brought into the folded state shown in FIG. In the folding container 1 in the state of FIG. 5, both the side plates 5 are laid inward. The two side plates 5 that are laid down partially overlap each other. Further, although it is hardly visible in FIG. 5, under the tilted side plate 5, both folded side plates 4 are in an overlapped state with the upper plate 6 and the lower plate 7 folded back by the hinge portion 8. . In this state, the hinge portions 8 of the folding side plates 4 are located closer to each other than in the state of FIG. The state of FIG. 1 is called a container state with respect to the folded state of FIG.

  As shown in FIGS. 3 and 4, a large number of windows 11 are formed in the tilt side plate 5 that is one of the members constituting the folding container 1. Also, as shown in FIG. 3, a large number of ribs 12 are formed on the inner surface side of the tilt side plate 5. Thereby, the air permeability between the inside and outside of the folding container 1 is improved (window 11), and a certain degree of rigidity is secured (rib 12). The bottom member 2 is the same in that windows and ribs are formed. A window is also formed in the folding side plate 4.

  The inner surface (FIG. 3) of the tilt side plate 5 will be further described. In addition to the ribs 12, there are shapes formed on the inner surface of the tilt side plate 5 shown in FIG. The partition wall 14 and the sticking prevention wall 15 are the shapes. Each of the partition wall 14 and the sticking prevention wall 15 is a vertical wall protruding toward the inside of the container, that is, toward the other side plate 5 in the container state of FIG. Also in FIG. 4, the partition wall 14 is slightly visible through the window 11.

  As shown in FIG. 3, both the partition wall 14 and the sticking prevention wall 15 are formed in the upper half of the height direction in the container state. Thereby, in the folded state of FIG. 5, the partition wall 14 and the sticking prevention wall 15 of one of the tilt side plates 5 do not overlap with the other tilt side plate 5. This contributes to the compactness in the thickness direction of the folding container 1 in the folded state. Further, the partition wall 14 and the sticking prevention wall 15 in the container state are within the range where the upper plate 6 of the folding side plate 4 exists in the height direction.

  The part in which the partition wall 14 and the sticking prevention wall 15 in FIG. 1 are drawn is enlarged and shown in FIG. In FIG. 1, only the partition wall 14 and the sticking prevention wall 15 of one of the tilt side plates 5 are visible, but the partition wall 14 and the sticking prevention wall 15 are also formed on the inner surface of the tilt side plate 5 facing the other outer surface side. Is formed.

  The lower part when the folding container 1 of FIG. 1 is cut along a horizontal plane is shown in FIG. The surface with hatching at the top of the folding container 1 shown in FIG. 7 is a cut surface. 7 is a horizontal plane within a height range in which the partition wall 14 and the sticking prevention wall 15 are provided. In addition, the actual folding container 1 is not made into the cutting | disconnection state shown in FIG. 7 in a normal use condition.

  As shown in FIG. 7, a large number of ribs 16 in a direction parallel to the folding side plate 4 are formed on the upward surface side of the bottom surface member 2. A concave portion is formed between the rib 16 and the rib 16, and a window 18 is formed there. A convex portion 19 is formed at an intermediate position between the tilt side plate 5 and the tilt side plate 5 on the upward surface side of the bottom member 2. The number of ribs 16 in the bottom member 2 is the same as the number of partition walls 14 in the tilt side plate 5. That is, the rib 16 and the partition wall 14 are in the same position with respect to the width direction of the folding container 1 (horizontal direction parallel to the tilt side plate 5).

  FIG. 8 shows a plan view of the folded folding container 1 shown in FIG. A rectangle indicated by a broken line in FIG. 8 is a storage space 20 for storing one stored item in the folding container 1. As the accommodation to be accommodated in the accommodation space 20, a plate-like substantially rectangular parallelepiped shape is assumed. The thickness is the same as or slightly thinner than the interval between the partition walls 14. That is, a plurality of stored items are stored in a standing state in the folded container 1 in a container state. In other words, it is accommodated in a state of being overlapped in the thickness direction.

  A typical example of the stored item is a cool storage agent (a solid body in which a cool storage solution is stored in a solid package and sealed). Although only two rectangles of the storage space 20 are drawn in FIG. 8, there are actually 18 storage spaces 20 in total of 2 rows × 9. Since the storage space 28 will be described later, it is ignored here for the time being. Outer surfaces of the objects accommodated in the four accommodation spaces 20 in the uppermost and lowermost stages among the 18 accommodation spaces 20 face the inner surface (side inner wall surface) of the folding side plate 4.

  The storage space 20 is defined by the convex portion 19 and a portion other than the partition wall 14 in the tilt side plate 5 in the left-right direction (the width direction of the stored item) in FIG. The vertical direction in FIG. 8 (thickness direction of the contents) is defined by the partition wall 14. Thereby, the contact in the row | line | column of the accommodated things accommodated is suppressed. In addition, the upper and lower storage spaces 20 in the uppermost and lowermost stages in FIG. 8 are defined by the partition wall 14 and the sticking prevention wall 15 in the vertical direction. As a result, in the folding container 1, not only contact between contained items is suppressed, but also contact between the uppermost and lowermost items and the folding side plate 4 is suppressed.

  Among these, the suppression of the contact between the contents and the folding side plate 4 by the sticking prevention wall 15 will be described with reference to FIG. FIG. 9 is an enlarged view showing the vicinity of the lower left corner of FIG. As shown in FIG. 9, the inner surface 21 of the sticking prevention wall 15 is in a position protruding toward the inner side of the accommodation space with respect to the inner surface 33 of the upper plate 6 of the folding side plate 4. A gap is formed between the outer surface of the uppermost and lowermost stored items and the inner surface 33 of the folding side plate 4 by the amount of overhang S. This is the suppression of the contact between the contents and the folding side plate 4 by the sticking prevention wall 15.

  However, when the stored item is the above-described cold storage agent, the folding container 1 is used for cooling the cold storage agent. That is, the folding container 1 containing the cool storage agent is built in the cooling device together with the stored cool storage agent. The cool storage agent is cooled by the cooling action of the cooling device. Here, the cold storage agent tends to increase in thickness when cooled. This is because the cold storage liquid enclosed inside expands during freezing. This increase in the thickness of the cool storage agent works in a direction in which the stored item and the folding side plate 4 are brought into contact with each other. However, even in such a situation, it is possible to prevent the contents and the folding side plate 4 from sticking to each other in close contact with each other. This is because the sticking prevention wall 15 causes the contact between the contents and the folding side plate 4 only locally. For this reason, even if sticking with the cool storage agent and the folding side plate 4 produced | generated temporarily arises, the sticking is only a local thing. Therefore, sticking can be easily eliminated and the cold storage agent can be taken out of the folding container 1.

  In the above, the overhang amount S is preferably in the range of 2.5 to 6.5 mm (more preferably in the range of 4 to 6 mm). If the overhang amount S is too small, the cold storage agent and the folding side plate 4 may not be sufficiently prevented from sticking. On the other hand, if the overhang amount S is too large, the vertical dimension of the sticking prevention wall 15 in FIG. 8 in particular will be excessive.

  Further, the outer surface 32 of the sticking prevention wall 15 is located slightly recessed with respect to the outermost surface 23 in the width direction (vertical direction in FIG. 8) of the tilt side plate 5. This depression prevents the sticking prevention wall 15 from being caught on the window 11 of the folding side plate 4 during the extending operation of the folding container 1. In particular, this significance is significant when the folding container 1 is folded from the container state (FIG. 1) to the folded state (FIG. 5). The dent amount T is preferably in the range of 0.5 to 3 mm. This is because if the dent amount T is too small, the sticking prevention wall 15 is not sufficiently prevented from being caught on the window 11. On the other hand, if the dent amount T is too large, the vertical dimension of the tilt side plate 5 in FIG. 8 will be excessive.

  Next, details of the folding side plate 4 will be described. As shown in FIG. 11, an engaging portion 22 is formed at an end portion in the width direction (left-right direction in FIG. 8) of the folding side plate 4 viewed as a single unit. The engaging portion 22 is a portion provided so as to protrude inward (inward in the vertical direction in FIG. 8) with respect to the folding side plate 4, and is provided on the upper plate 6 and the lower plate 7, respectively. . The folding container 1 as a whole has a total of eight engaging portions 22. The positions where the engaging portions 22 are provided are the positions where the folding side plate 4 and the tilting side plate 5 are in contact with each other in FIG. 6, and the four corner positions in FIG. In the container state of FIG. 1, the engaging portion 22 is hooked on the tilt side plate 5 to fix the tilt side plate 5. In other words, together with the hook hole 10 (see FIG. 3) of the tilt side plate 5, the folded container 1 in the container state is prevented from being in the folded state in FIG. 5 alone.

  The engaging portion 22 also appears in FIG. As shown in FIG. 9, the engaging portion 22 has a base portion 24 and a claw-like portion 25. The base 24 is a portion that protrudes inward with respect to the folding side plate 4 (inward in the vertical direction in FIG. 8). The claw-like portion 25 is located at the tip of the base portion 24 and is a portion projecting inwardly (inward in the left-right direction in FIG. 8) in parallel with the folding side plate 4 therefrom. The protruding direction of the claw-like portion 25 corresponds to the inward direction with respect to the tilt side plate 5. Although the engaging portion 22 appearing in FIG. 9 is that of the upper plate 6, the engaging portion 22 of the lower plate 7 is also formed in the same shape.

  As apparent from FIG. 9, in the container state, the claw-shaped portion 25 of the engaging portion 22 enters the inside of the sticking prevention wall 15 of the tilt side plate 5 and is in contact with the inner surface 21 thereof. For this reason, referring back to FIG. 4, a through-hole 26 for passing the claw-like portion 25 is formed in the tilt side plate 5. As shown in FIG. 9, the through hole 26 is partitioned by a partition wall 29 on the outer side in the width direction (vertical direction in FIG. 9) of the tilt side plate 5 and a partition wall 30 on the inner side. Of course, both the partition walls 29 and 30 are part of the tilt side plate 5. The sticking prevention wall 15 is formed continuously from the partition wall 29 inward in the width direction of the folding side plate 4 (left and right direction in FIG. 9).

  In the tilt side plate 5, a concave portion 27 is formed adjacent to the through hole 26 on the outer side in the width direction (vertical direction in FIG. 8). The concave portion 27 is a concave portion when viewed from the outer surface side in the container state. The concave portion 27 is formed on the outer surface side of the partition wall 29. In the container state, the base portion 24 of the engaging portion 22 is housed in the concave portion 27. For this reason, as shown in FIG. 9, in the container state, the base portion 24 does not protrude outward from the outer surface of the side plate 5. Note that the claw-like portion 25 of the engaging portion 22 also appears in FIG.

  In FIG. 4, the concave portion 27 is locally formed only in the portion engaging with the engaging portion 22 in the entire height direction of the tilt side plate 5. But this is not essential. Concave portions 27 may be formed so as to be continuous with the upper and lower through holes 26 in FIG. Further, the side end portion of the tilt side plate 5 may be a concave portion 27 in the entire height direction. The “concave shape” in this case means that it is recessed with respect to the outer surface 31 (see FIG. 9) of the tilt side plate 5. Further, instead of the through hole 26, a concave portion that does not penetrate may be used. That is, in FIG. 9, the right ends of the partition walls 29 and 30 may be connected.

  Here, the positional relationship between the concave portion 27 and the sticking prevention wall 15 will be described. The position of the sticking prevention wall 15 on the tilt side plate 5 corresponds to a position protruding inward (inward in the left-right direction in FIG. 8) from the portion where the concave portion 27 is formed. Since the sticking prevention wall 15 is formed at such a position, a decrease in strength of the tilt side plate 5 due to the formation of the through hole 26 and the concave portion 27 is compensated.

  When the folding container 1 is changed from the folded state of FIG. 5 to the container state of FIG. 1, the upper frame member 3 is lifted upward. Then, the two folding side plates 4 rise from the folded state and become a flat plate state. As a result, the two side plates 5 that have been in a lying state are swung downward and are standing. At this time, the hook hole 10 is hooked on the short side of the bottom member 2, and the claw-like portion 25 is fitted in the through-hole 26 so that the base portion 24 is accommodated in the concave portion 27. Although the operation for changing the container state to the folded state has been described above, the claw-like portion 25 is also detached from the through hole 26 when the hooking hole 10 is detached from the bottom surface member 2.

  Although it has been described in FIG. 8 that the folding container 1 has a total of 18 accommodation spaces 20, there is no partition between the two left and right accommodation spaces 20 in FIG. Therefore, these two storage spaces 20 can be used as a storage space 28 for a large-sized storage object. That is, it can be seen that the folding container 1 has nine large-sized storage spaces 28. The convex container 19 (see FIG. 7) is not necessary for the folding container 1 when it is assumed that it is used exclusively for a large size. In the folding container 1 in that case, the partition wall 14 and the sticking prevention wall 15 may be formed only on one of the two side plates 5 on the side.

  As described in detail above, according to the present embodiment, in the folding container 1 that stores and arranges a plurality of flat-shaped containers in an upright state, the partition that separates the containers from each other is provided on the tilt side plate 5. In addition to the wall 14, an anti-sticking wall 15 that prevents adhesion between the contents and the folding side plate 4 is provided. For this reason, a gap is formed between the outermost stored item and the folded side plate 4. Therefore, when the cool storage agent is stored as the stored item, even if the cool storage agent is cooled together with the folding container 1 and the cool storage agent expands in the thickness direction, sticking of the cool storage agent to the folding side plate 4 does not occur. In this way, the folding container 1 which can take out the cooled cool storage agent easily is realized.

  Note that this embodiment is merely an example, and does not limit the present invention. Therefore, the present invention can naturally be improved and modified in various ways without departing from the gist thereof.

  For example, in this Embodiment, the partition wall 14 and the sticking prevention wall 15 are provided in the upper position in the height direction in a container state. However, this is not essential, and the partition wall 14 and the sticking prevention wall 15 can be provided at a lower position, or provided at both an upper position and a lower position (continuous is possible). You can also. However, the upper position is more preferable. This is because it is easy to correctly set the container in the storage space 20 when the container is stored in the folding container 1 in the container state. Furthermore, it is more preferable to provide only at the upper position as in this embodiment. This is because, in the folded state of FIG. 5, the partition walls 14 and the sticking prevention walls 15 of the two side plates 5 do not overlap with each other, so that the folded state can be made more compact.

  In the present embodiment, the two side plates 5 are configured to swing around the upper frame member 3 above. However, this is not indispensable, and the two side plates 5 may be configured to swing around the bottom surface member 2 below. However, the configuration of swinging at the upper center as in this embodiment is superior. This is because the partition wall 14 and the sticking prevention wall 15 should be in the upper position as described above. This is because if the swing of the tilt side plate 5 is in the lower center, the partition walls 14 and the sticking prevention walls 15 of the two tilt side plates 5 overlap each other in the folded state.

  Further, in the present embodiment, the partition wall 14 and the sticking prevention wall 15 are provided on the tilt side plate 5. However, the present invention is not limited to this, and the folding side plate 4 may be provided instead of the tilt side plate 5. However, the configuration in which the partition wall 14 and the sticking prevention wall 15 are provided on the tilt side plate 5 as in this embodiment is superior. This is because if the partition wall 14 and the sticking prevention wall 15 are provided on the folding side plate 4, the overall shape of the tilt side plate 5 is restricted. This is because it is necessary to prevent interference between the partition wall 14 and the sticking prevention wall 15 and the tilt side plate 5 during the swinging operation.

  Further, in the present embodiment, both short sides are constituted by the tilt side plate 5 and both long sides are constituted by the folded side plate 4 in a plan view as shown in FIG. However, it is possible to reverse the relationship between the long side and the short side. Furthermore, the plan view of FIG. 8 may be square. In the present embodiment, each member other than the upper frame member 3 is configured to have a rib and a window. But this is not essential. However, if the window is formed, the cooling efficiency during refrigeration is better. The ribs should also be formed from the viewpoint of securing the strength of each member. Moreover, as for the material of each member, synthetic resin is generally used, but other materials such as wood and metal may be used. There is no particular limitation on the type of synthetic resin.

DESCRIPTION OF SYMBOLS 1 Folding container 2 Bottom surface member 3 Upper frame member 4 Folding side plate 5 Folding side plate 8 Hinge part 14 Partition wall 15 Sticking prevention wall 21 Sticking prevention wall inner surface 22 Engagement part 23 Outermost surface 24 Base part 25 Claw-like part 26 Through hole 27 Indented part 32 Outer surface S of the sticking prevention wall S Overhang amount T Indent amount

Claims (5)

A rectangular bottom member;
A rectangular upper frame member positioned above the bottom member;
A first folding side plate and a second folding plate, which connect parallel first sides of the bottom surface member and the upper frame member to each other and opposite sides of the first sides, and have a hinge portion at an intermediate height position. Folding side plates,
A first side plate that is swingable with respect to either one of the second sides that are adjacent to each of the first sides of the bottom surface member and the upper frame member and that are positioned above and below each other; A second side plate,
A container state in which both the first folding side plate and the second folding side plate are formed into a flat plate shape, and the first tilting side plate and the second tilting side plate are both raised.
The first folding side plate and the second folding side plate are both folded so that the outer surfaces of the upper part and the lower part of the hinge part face each other, and the first and second tilt side plates are folded. Is a folding container that takes a folded state in which it is laid inward,
At least one of both inner wall surfaces facing each other in the container state in the first tilt side plate and the second tilt side plate, or both of the inner surfaces facing each other in the container state in the first folding side plate and the second folding side plate. On at least one of the walls,
A partition wall that is a vertical wall that is positioned between adjacent ones of the stored items that are stacked and protrudes inward in the container state;
Inwardly in the container state, a space is provided between the outer surface of the outermost stored item and the side inner wall surface that faces the outer surface of the inner wall surface. A folding container, characterized in that a sticking prevention wall that is a vertical wall that protrudes into the wall is formed. The folding container according to claim 1,
The partition wall and the sticking prevention wall are formed on at least one of inner walls of the first tilt side plate and the second tilt side plate,
Projecting inward in the container state at least at one end position in the plate width direction of the side inner wall surface, which is the inner wall surface of the first folding side plate and the second folding side plate, in the container state An engaging portion is provided for fixing the first tilt side plate or the second tilt side plate;
At least one of the first tilt side plate and the second tilt side plate is
Storing at least a part of the engaging portion in the container state; and an engaged portion having a concave shape when viewed from the outer surface side in the container state;
A partition wall that partitions the outer side in the width direction of the engaged portion is formed,
The folding container is characterized in that the sticking prevention wall is formed to project inward in the width direction of the first folding side plate or the second folding side plate from the partition wall. The folding container according to claim 2,
In the engaging portion,
The base,
A claw-like portion that protrudes inward in the width direction of the first folding side plate or the second folding side plate from the tip of the base portion and contacts the inner surface of the partition wall in the container state is formed,
The folding container is characterized in that the partition wall is formed with a recessed portion having a shape that is recessed when viewed from the outer surface side in the container state, in which the base is accommodated. The folding container according to claim 2 or 3, wherein
The amount of dents from the outermost surface in the width direction of the first or second tilt side plate on the surface opposite to the container side of the sticking prevention wall is in the range of 0.5 to 3 mm. A featured folding container. A folding container according to any one of claims 1 to 4, wherein
A folding container characterized in that the amount of the container-side surface of the sticking prevention wall projecting from the side inner wall surface in the container state is in the range of 2.5 to 6.5 mm.

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