JP2013001403A - Folding container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a folding container which can surely suppress the backlash of stored articles while enabling the appropriate folding of sidewalls.SOLUTION: The folding container 1 has a bottom wall 2 nearly in the shape of a rectangular sheet and sidewalls 3 and 4 rotatably connected with a base 6 and a base 7 projecting upward along the lateral sides. Upper side convex portions 32 projecting from internal surfaces of the sidewalls 3, lower side convex portions 33 projecting from the internal surface of the base 6 supporting the sidewalls 3, and connecting members 34 provided to be able to slide with respect to the upper side convex portions 32 are provided. When the sidewalls 3 are erected, the upper side convex portions 32 and the lower side convex portions 33 are arranged face to face above and below separated by a prescribed distance. The connecting members 34 are constituted to slide and to be displaced between a connecting position where they are extended across from the upper side convex portions 32 to the lower side convex portions 33 and a separation position where they are separated from the lower side convex portions 33 and permitting the sidewall portions 3 to be incline and displaced when the sidewalls 3 are in erecting positions.

Description

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

  2. Description of the Related Art Conventionally, a substantially rectangular plate-shaped bottom wall portion and a side wall portion rotatably connected to each side portion of the bottom wall portion are provided, and each side wall portion is overlapped above the bottom wall portion. Folding containers that can be folded inward are known. Furthermore, there is a technique in which a holding portion that protrudes from the inner surface side of the side wall portion is provided, the article stored in the folding container is held by the holding portion, and rattling of the article is suppressed (see, for example, Patent Document 1). ).

JP 2005-14980 A

  However, the holding part described in Patent Literature 1 is provided only corresponding to a part of the height direction of the side wall part (side wall plate), for example, a state in which a plurality of articles are stacked up and down. When the container is transported by being accommodated in the folding container, there is a possibility that the effect of suppressing the rattling of the article at the holding portion may not be sufficiently achieved. Moreover, since the holding | maintenance part of patent document 1 is provided in the inner member comprised so that folding was possible separately from a side wall part, there exists a possibility of causing the fall of workability | operativity at the time of assembling or folding a folding container. is there.

  The present invention has been made in order to solve the above-described problems, and the object thereof is a folding container that can more reliably suppress the looseness of the accommodated articles while realizing suitable folding of the side wall. Is to provide.

  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 substantially rectangular plate shape, and a bottom wall portion having a base portion protruding upward along each side portion, and a side wall portion rotatably connected to each of the base portions,
Each of the side wall portions is a folding container configured to be rotatable and displaceable between an upright position standing above the base portion and a laying position folded above the bottom wall portion,
An upper protrusion protruding from the inner surface of the at least one side wall;
A lower convex portion projecting from the inner surface of the base portion supporting the side wall portion, and
A connecting member provided slidably with respect to one of the upper convex portion and the lower convex portion,
When the side wall portion is in the standing position, the upper convex portion and the lower convex portion are arranged to face each other with a predetermined distance in the vertical direction,
The connecting member includes a connecting position extending so as to be bridged from one of the upper convex portion and the lower convex portion when the side wall portion is in the standing position, and the upper convex portion and A folding container that is configured to be slidably displaceable from a separated position that is separated from the other of the lower convex portions and allows the side wall portion to be tilted and displaced toward the lying position side.

  According to the means 1, the upper convex portion, the lower convex portion, and the connecting member can be continuously extended up and down by setting the side wall portion to the standing position and the connecting member to the connecting position. Accordingly, the upper and lower projections projecting from the inner surface of the side wall portion and the connecting member support the outer peripheral surface of the article accommodated in the folding container, and can prevent displacement in the horizontal direction. . In particular, since it can extend from the side wall portion to the base portion without any break, for example, when a plurality of articles are stacked and accommodated in a folding container, the height position is about the same as the boundary between the side wall portion and the base portion. Also for the stacked articles, the connecting member can be held in direct contact with the articles. Therefore, rattling or tilting of the articles accommodated in the folding container can be prevented more reliably.

  Furthermore, by setting the connecting member in the separated position, the gap between the upper and lower convex portions is exposed, and the gap is used to position a part of the side wall portion that is the laying position. It can be used as a space. Therefore, even when the article stored in the folding container can be held even at a height position similar to the boundary between the side wall portion and the base portion, the side wall portion can be reliably folded.

  Mean 2. The connecting member is slidably attached to the upper convex portion, and the lower convex portion is provided with a support portion that comes into contact with the lower side portion of the connecting member at the connecting position. The folding container according to means 1 described above.

  According to the means 2, it is possible to simplify the configuration in which the connecting member is maintained at the connecting position as compared with the case where the connecting member is attached to the lower convex portion. Further, when the side wall portion is erected, the connection member can be displaced to the connection position by its own weight without directly operating the connection member. In this case, it is possible to improve workability when the folding container is assembled into a box shape.

  Means 3. The upper convex portion includes a locking portion that is locked with a locked portion provided on the connecting member when the connecting member is in the separated position. Folding container as described in

  According to the means 3, since the connecting member can be held at the separated position, it is not necessary for the operator to directly press the connecting member displaced to the separated position by hand when the side wall portion is folded. Therefore, it is possible to improve the workability when folding the folding container.

  Even when the structure of the locking part and the locked part of the means 3 is provided, by providing the structure of the means 2, the connection member is displaced to the connection position by its own weight when the locked state is released. Therefore, the workability is still improved compared to the case where the connecting member is provided on the lower convex portion. Further, for example, when the connecting member is provided on the lower convex portion, an engaging portion and an engaged portion for holding the connecting member at the connecting position are required. In the state of use for storage, it is necessary to relatively firmly lock the locking portion and the locked portion so that the connecting member does not move even if the folding container vibrates or is pressed against the article. There is a risk of complicating the configuration. On the other hand, the locking portion and the locked portion of the means 3 only need to hold the connecting member at the separated position only when the side wall portion is folded, and the configuration can be simplified.

It is a perspective view of the folding container in an assembly state. It is a perspective view of the folding container which exists in an assembly state and has a connection member in a separation position. It is a perspective view of the folding container in a folded state. It is a perspective view containing the partial cross section of a folding container. It is a partial expansion perspective view which shows an upper side convex part. It is a perspective view of a connection member. It is a perspective view containing the partial cross section of a folding container. It is a perspective view containing the partial cross section of a folding container. It is a perspective view of the folding container in which articles | goods were accommodated.

  Hereinafter, an embodiment will be described with reference to the drawings. As shown in FIG. 1 and the like, the folding container 1 has a substantially rectangular plate-like bottom wall portion 2 and a long side that is rotatably provided corresponding to a pair of opposed long side portions of the bottom wall portion 2. The side wall part 3 and the short side wall part 4 provided so as to be rotatable respectively corresponding to a pair of opposing short side parts of the bottom wall part 2 are provided. In this embodiment, the bottom wall part 2, the long side wall part 3, and the short side wall part 4 are made of polypropylene.

  As shown in FIG. 3, the bottom wall portion 2 includes a long side base portion 6 protruding upward from the bottom wall portion 2 along each long side portion, and a bottom wall portion 2 along each short side portion. A short-side base portion 7 protruding upward is provided. In the present embodiment, the long side wall portion 3 and the short side wall portion 4 are rotatably connected to the long side base portion 6 and the short side base portion 7, respectively. , 7 is configured to be rotatable and displaceable between an upright position erected above 7 and a sleeping position that is folded above the bottom wall 2 and extends in parallel with the bottom wall 2. .

  As shown in FIG. 3, FIG. 7, etc., each long side base portion 6 includes an inner wall portion 11 that extends upward from the long side portion of the bottom wall portion 2, and an upper portion that extends outward from the upper edge portion of the inner wall portion 11. The wall portion 12 and an outer wall portion 13 that extends downward from the outer edge portion of the upper wall portion 12 are provided, and has a substantially U-shaped cross section opened downward. Further, each long side base portion 6 is provided with a bearing portion 15 for rotatably supporting the long side wall portion 3. The bearing portion 15 is provided with a pair of connecting wall portions 16 that connect the inner wall portion 11 and the outer wall portion 13 so as to face each other in the extending direction of the base portions 6 and 7, and between the pair of connecting wall portions 16. The upper wall portion 12 is cut out and the inner wall portion 11 is cut away so as to leave a connecting portion with the connecting wall portion 16, and the remaining inner wall portion 11 is directed from the upper side portion toward the outer wall portion 13 side. It is configured by providing a protruding hook portion (not shown).

  Further, as shown in FIG. 3, each of the short side base portions 7 also has an inner wall portion 11 extending in parallel with each other along the short side portion of the bottom wall portion 2, although the upper wall portion 12 is omitted. In addition to the outer wall portion 13, a bearing portion 15 that is partitioned by a connecting wall portion 16 and includes a hook portion 17 is provided.

  The protrusion length from the bottom wall part 2 of the short side base part 7 of this embodiment is shorter than the protrusion length from the bottom wall part 2 of the long side base part 6. Moreover, the short side base part 7 is provided so that the inner surfaces of a pair of opposing long side base part 6 may be connected. Further, a deviation preventing projection 18 is formed that protrudes from the inner wall portion 11 in the vicinity of both ends of each long side base portion 6 to above the short side base portion 7. The inner surface of the deviation preventing projection 18 is flush with the inner surface of the inner wall 11 of the short side base 7.

  As shown in FIG. 4 and the like, the bottom wall 2 of the present embodiment includes a bottom plate 2a in which openings that penetrate vertically in a grid pattern are formed, and a peripheral portion of each opening formed in the bottom plate 2a. Grid-like bottom ribs 2b extending downward from the bottom. The bottom rib 2b is formed over the entire range on the inner peripheral side of the frame-shaped portion constituted by the base portions 6 and 7. Further, the lower edge portion of the outer wall portion 13 of the base portions 6 and 7 is substantially the same height as the lower surface of the bottom plate 2a of the bottom wall portion 2, and is located above the lower edge portion of the bottom rib 2b. ing.

  As shown in FIGS. 1, 4, 7, etc., the long side wall 3 and the short side wall 4 are substantially rectangular having substantially the same lateral width as the long side base 6 or the short side base 7. The plate-shaped wall main body 21 and the hinge part 23 which protrudes from the lower side part (The surface which faces the lower side in the standing position and faces the outer peripheral side of the bottom wall part 2 in the sleeping position) are provided. Further, on the outer surface of the wall main body 21, reinforcing ribs 24 are appropriately formed so as to project outward along at least the outer peripheral edge of the wall main body 21, whereby the long side wall 3 and the short side wall are formed. The thickness of the part 4 is configured to be substantially the same as the thickness of the long side base part 6 or the short side base part 7.

  As shown in FIG. 5 and the like, the hinge portion 23 is directed downward from a portion constituting the lower side portion of the side wall portions 3 and 4 in the standing position among the reinforcing ribs 24 formed along the outer periphery of the wall main body 21. A substantially rod-like connecting portion 25 extending vertically and a pair of shaft portions 26 projecting along the longitudinal direction of the side wall portions 3 and 4 from both side surfaces of the distal end portion of the connecting portion 25, respectively, are substantially T It has a letter shape. And the shaft part 26 of the hinge part 23 of the long side wall part 3 and the short side wall part 4 is inserted into the bearing part 15 of the long side side base part 6 or the short side side base part 7, respectively. The shaft portion 26 is located on the lower surface side of the hook portion 17 of the bearing portion 15 and is pivotally supported. Thereby, each side wall part 3 and 4 is connected with respect to the base parts 6 and 7 so that rotation is possible.

  As shown in FIG. 1 and the like, in this embodiment, the bearing portion 15 (the rotation center of the long side wall portion 3) of the long side side base portion 6 is the bearing portion 15 (short side) of the short side side base portion 7. It is provided at a position higher than the rotation center of the side wall portion 4. For this reason, unless the short side wall part 4 is folded first, the long side wall part 3 cannot be folded. Therefore, as shown in FIGS. 3, 7, etc., in the state in which the folding container 1 is folded (the non-use state in which all the side wall portions 3, 4 are laid down parallel to the bottom wall portion 2), the long side wall The part 3 is folded so as to overlap the upper side of the short side wall part 4. In addition, as shown in FIG. 1, when the folding container 1 is assembled in a box shape that opens upward (use state in which all the side wall portions 3 and 4 are in an upright position), It is comprised so that an upper surface may become substantially flush.

  The vertical width of the wall body 21 of the long side wall 3 is slightly shorter than half the distance between the pair of long sides 6. Furthermore, the vertical width of the wall body 21 of the short side wall 4 is shorter than half the distance between the pair of short sides 7.

  In addition, as shown in FIG. 3 and FIG. 7, when the long side wall 3 is folded, the protrusions are provided in the vicinity of both ends of the lower side of the wall body 21 of the long side wall 3. A slip prevention recess 28 into which 18 is inserted is formed. Thereby, the shift | offset | difference movement in the horizontal direction of the long side wall part 3 folded above the short side wall part 4 can be prevented more reliably.

  The long side wall 3 is positioned below the upper surface of the long side base 6 when in the laying position. For this reason, when the folded containers 1 in a folded state are stacked up and down (stacked), the lower surface of the upper folding container 1 is supported by the upper surface of the long side base portion 6 of the lower folding container 1. The four corners of the outer peripheral surface of the bottom rib 2b of the upper folding container 1 are positioned so as to be substantially in contact with the corner portions formed by the respective deviation preventing projections 18 and the long side base portion 6 of the lower folding container 1. The Therefore, the folded containers 1 in the folded state can be stably stacked.

  Further, even when all the side wall parts 3 and 4 are erected and used in a box shape, when the folding container 1 is stacked, the upper side folding container 1 is moved by the upper side part of the side wall parts 3 and 4 of the lower folding container 1. 1 is supported, and the bottom rib of the upper folding container 1 enters the inner circumferential side of the side walls 3 and 4 of the lower folding container 1 for positioning. Therefore, the folding containers 1 in use can be stably stacked.

  As shown in FIGS. 1 and 9, etc., in this embodiment, a holding mechanism as a holding means for supporting the outer peripheral surface of an article (for example, a lunch box stacked in a plurality of stages above and below) accommodated in the folding container 1 31 is provided. The holding mechanism 31 has an upper convex portion 32 projecting from the inner surface of the long side wall portion 3, a lower convex portion 33 projecting from the inner surface of the long side base portion 6, and the outer surface of the upper convex portion 32. And a connecting member 34 slidably attached along the height direction of the upper convex portion 32 (long side wall portion 3).

  As shown in FIGS. 4 and 5, the upper convex portion 32 and the lower convex portion 33 are substantially rectangular parallelepiped box-shaped base portions 35 that protrude from the inner surface of the long side wall portion 3 toward the inner peripheral side of the bottom wall portion 2. And a central protrusion 36 that protrudes from the central portion in the width direction of the base portion 35 toward the inner peripheral side of the bottom wall portion 2 and has a substantially “convex” shape in plan view. In FIG. 4, the illustration of the connecting member 34 is omitted.

  Further, as shown in FIG. 5, on both side surfaces of the base portion 35 of the upper convex portion 32, slide rails 37 are formed so as to extend from the upper side portion to the lower side portion of the base portion 35 along the vertical direction. Further, the upper protrusion 32 is provided with a locking projection 38 protruding laterally at the upper and lower portions of each slide rail 37.

  Further, as shown in FIG. 7 and the like, the lower convex portion 33 is provided with a support portion 39 that protrudes outward from the entire outer surface at a position slightly below the upper surface. In other words, the upper surface of the lower convex portion 33 has the same shape and the same size as the upper surface and lower surface of the upper convex portion 32, but with respect to a portion below the support portion 39 of the lower convex portion 33. Is slightly larger than the outer shape of the upper and lower surfaces of the upper protrusion 32. Further, the lower convex portion 33 is formed from the upper surface of the bottom wall portion 2 to the lower edge portion of the hinge portion 23 formed on the long side base portion 6.

  Further, when the long side wall portion 3 is in the standing position, the upper convex portion 32 and the lower convex portion 33 of each holding mechanism 31 are arranged to face each other in the vertical direction. Furthermore, in the case where the long side wall portion 3 is in the standing position, the distance between the upper convex portion 32 and the lower convex portion 33 is greater than the protruding length of the lower convex portion 33 from the long side base portion 6. It is also constructed long.

  As shown in FIGS. 6A and 6B, the connecting member 34 has a shape corresponding to the outer shape of the upper convex portion 32, and has a substantially “convex” cross section. In the present embodiment, the vertical width of the connecting member 34 is configured to be the same as the vertical width of the upper protrusion 32. Furthermore, guide grooves 41 extending from the upper side portion of the connecting member 34 to the lower side portion are formed along the vertical direction in portions of the connecting member 34 that face the both side surfaces of the base portion 35 of the upper convex portion 32. Yes. Inside each guide groove 41, a slide rail 37 of the upper convex portion 32 is inserted. Accordingly, the connecting member 34 is configured to be slidable up and down along the slide rail 37, and a situation where the connecting member 34 falls off to the inner peripheral side of the bottom wall portion 2 is prevented.

  Further, the connecting member 34 has a connecting position that extends so as to be bridged from the upper convex portion 32 to the lower convex portion 33 in the state where the long side wall portion 3 is in the standing position, and the lower convex portion 33. The gap between the upper convex portion 32 and the lower convex portion 33 is exposed, and sliding displacement is possible between the long side wall portion 3 and the separation position that allows the tilting displacement toward the laying position side. It is configured.

  In the present embodiment, when the connecting member 34 is in the connecting position, the lower side portion of the connecting member 34 is configured to be in contact with and supported by the support portion 39 of the lower convex portion 33. Further, as shown in FIGS. 7 and 8, when the long side wall portion 3 is displaced to the laying position with the connecting member 34 as the separation position, the upper surface of the lower convex portion 33 and the long side wall portion 3 The inner side surface (including the hinge portion 23) is configured to abut vertically. Further, the long side wall 3 at the laying position extends so as to be parallel to the bottom wall 2.

  In the slide rail 37 of the present embodiment, the surface on the long side wall portion 3 side extends in parallel with the long side wall portion 3, whereas the inner peripheral surface of the bottom wall portion 2 is convex upward. Inclined and extended toward the side of the long side wall 3 toward the side of the portion 32. For this reason, it is also possible to attach the connecting member 34 by pressing it against the upper convex portion 32 from the front end side in the protruding direction of the upper convex portion 32.

  Further, the connecting member 34 is formed with a locking hole 42 (see FIG. 6) penetrating in the lateral width direction of the connecting member 34 at the upper and lower portions of each guide groove 41. When the connecting member 34 is in the separated position, the upper and lower locking projections 38 formed on the upper convex portion 32 are inserted into the upper and lower locking holes 42 formed on the connecting member 34, respectively. The locking hole 42 is locked at the peripheral edge. Thereby, the connecting member 34 is held at the separated position. In the present embodiment, in the locked state of the locking projection 38 and the locking hole 42, the positions of the lower side portion of the upper convex portion 32 and the lower side portion of the connecting member 34 are aligned.

  On the other hand, when the connecting member 34 is in the connecting position, the lower engaging projection 38 of the upper and lower engaging projections 38 formed on the upper convex portion 32 is the upper and lower engaging projections formed on the connecting member 34. The locking hole 42 is inserted into the upper locking hole 42, and the locking hole 42 is locked at the periphery. Thereby, the upward displacement (raising) of the connecting member 34 at the connecting position is prevented. In the present embodiment, the locking projection 38 constitutes a locking part, and the locking hole 42 (the peripheral edge thereof) constitutes the locked part.

  Further, in the present embodiment, two holding mechanisms 31 are provided at equal positions corresponding to the long side wall portions 3. Furthermore, the holding mechanism 31 provided in each of the pair of opposing long side wall portions 3 is provided at a position facing each other.

  As described above in detail, according to the present embodiment, the upper side protrusion 32, the lower side protrusion 33, and the connection are provided by setting the long side wall 3 to the standing position and the connection member 34 to the connection position. The holding mechanism 31 including the member 34 can be continuously extended up and down. Accordingly, the holding mechanism 31 protruding from the inner surface of the long side wall portion 3 supports the outer peripheral surface of the article accommodated in the folding container 1 and can prevent displacement in the horizontal direction (see FIG. 9). . In particular, since the holding mechanism 31 can extend without a break from the long side wall portion 3 to the long side base portion 6, for example, when a plurality of articles are stacked and accommodated in the folding container 1, the long side side Even for articles stacked at the same height as the boundary between the side wall 3 and the long side base 6, the connecting member 34 can be held in direct contact with the article. Therefore, rattling or tilting of the articles accommodated in the folding container 1 can be more reliably prevented.

  Further, by setting the connecting member 34 to the separated position, a gap between the upper convex portion 32 and the lower convex portion 33 is exposed, and the gap is formed on the long side wall portion 3 that is set to the sleeping position. It can be used as a space for positioning a part. Therefore, even if the article accommodated in the folding container 1 can be held even at a height position similar to the boundary between the long side wall 3 and the long side base 6, the long side wall 3 is Can be folded reliably.

  The connecting member 34 is slidably attached to the upper convex portion 32. For this reason, compared with the case where the connection member 34 is attached to the lower side convex part 33, simplification of the structure which maintains the connection member 34 in a connection position can be achieved. Further, the upper protrusion 32 is provided with a locking protrusion 38 that is locked with the locking hole 42 of the connecting member 34 when the connecting member 34 is in the separated position. Accordingly, since the connecting member 34 can be held at the separated position, the operator needs to directly press the connecting member 34 that has been displaced to the separated position by the hand when the long side wall portion 3 is folded. Disappears. Therefore, it is possible to improve workability when folding the folding container 1.

  In addition, if the locking state between the locking projection 38 and the locking hole 42 is released by the configuration in which the connecting member 34 is attached to the upper convex portion 32, the connecting member 34 is displaced to the connecting position by its own weight. Become. For this reason, compared with the case where the connection member 34 is provided in the lower convex part 33, workability | operativity is improved. Further, for example, when the connecting member 34 is provided on the lower convex portion 33, a locking portion and a locked portion for holding the connecting member 34 at the connecting position are required, but the article is accommodated. When the folding container 1 is vibrated or pressed by an article in a state of use that is transported and stored, the locking portion and the locked portion are locked relatively firmly so that the connecting member 34 is not displaced. Since the necessity arises, there is a risk of complicating the configuration. On the other hand, in the present embodiment, it is only necessary to lock the locking hole 42 and the locking projection 38 of the connecting member 34 and hold the connecting member 34 at the separated position only when the side wall portion is folded. The configuration can be simplified.

  Further, the long side wall portion 3 in the standing position is prevented from tilting inward by the side portion of the short side wall portion 4 in the standing position. Therefore, for example, the durability of the connecting member 34 can be improved as compared with a configuration in which the long side wall portion 3 is prevented from falling down only by the connecting member 34. In addition, since the long side wall 3 at the laying position extends in parallel with the bottom wall 2, the folding container 1 can be folded more compactly.

  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) In the said embodiment, in the state which folded the side wall parts 3 and 4, the long side wall part 3 has overlapped with the long side wall part 3 on the upper side, and the short side wall part 4 has overlapped on the lower side. You may comprise so that the part 3 may be on the lower side and the short side wall part 4 may overlap on the upper side. Moreover, in the said embodiment, although the holding mechanism 31 is provided only in the long side wall part 3, in addition to or instead of the holding mechanism 31 of the long side wall part 3, the short side wall part 4 is provided. It is good also as providing the holding mechanism 31 in this. Furthermore, in the said embodiment, although the holding mechanism 31 is provided in the opposing position in a pair of opposing long side wall part 3, and each long side wall part 3 is also provided in the equal position, the holding mechanism 31 is provided. There are no particular restrictions on the arrangement, number, etc. of these, and they are appropriately set according to the articles to be accommodated. For example, the holding mechanism 31 may be provided only on one of the long side wall portions 3, and the positions of the holding mechanisms 31 provided on the pair of long side wall portions 3 may be It may be displaced in the longitudinal direction.

  (B) In the above-described embodiment, the pair of left and right engaging projections 38 are provided at the upper and lower portions in the upper convex portion 32, but only one of them may be provided. For example, when only the upper locking projection 38 is used, the effect of preventing the connection member 34 from being lifted at the connection position is lost, but the connection member 34 at the separated position can be held. On the other hand, when only the lower locking projection 38 is used, the holding effect is weakened, but the positioning effect is exhibited regardless of whether the connecting member 34 is in the connecting position or the separated position. It is also possible to omit the locking protrusions 38 of the upper convex portion 32 and the locking holes 42 of the connecting member 34. In this case, when the long side wall portion 3 is erected, the connecting member 34 is displaced to the connecting position by its own weight without directly operating the connecting member 34.

  (C) In the said embodiment, when the long side wall part 3 is made into the sleeping position, it is comprised so that the upper side convex part 32 may be located above the short side wall part 4, but, for example, a long side When the side wall portion 3 is in the laying position, the upper convex portion 32 may be accommodated in a position adjacent to the short side wall portion 4 that has been folded first in the horizontal direction. In this case, the folding container 1 can be folded more compactly. Moreover, in the said embodiment, the up-and-down width of the upper side convex part 32, the lower side convex part 33, and the connection member 34 is not specifically limited, When the long side wall part 3 is made into an upright position, it is upper side convexity. What is necessary is just to be comprised so that between the surface of the part 32 and the surface of the lower side convex part 33 may be connected by the connection member 34 (it extends continuously).

  (D) In the above embodiment, the connecting member 34 is attached to the upper convex portion 32, but may be attached to the lower convex portion 33. However, since there exists a possibility of causing the complication of the structure for hold | maintaining the connection member 34 in a connection position, it is desirable to attach to the upper convex part 32 like the said embodiment. Moreover, in the said embodiment, when the long side wall part 3 is made into the sleeping position, the upper surface of the lower side convex part 33 and the inner surface (including the hinge part 23) of the long side wall part 3 are up and down. Although configured to abut, the upper surface of the lower convex portion 33 and the front end surface in the protruding direction of the upper convex portion 32 may be configured to abut vertically.

  (E) In the above embodiment, the folding container 1 is made of polypropylene, but may be made of other resin materials such as polyethylene, PET, and polyamide. Further, for example, the material of the holding mechanism 31 is not limited to resin. For example, the connecting member 34 may be made of metal, and the surface of the lower convex portion 33 is made of rubber and fine on the surface. You may stick the sheet | seat in which the unevenness | corrugation was formed.

  DESCRIPTION OF SYMBOLS 1 ... Folding container, 2 ... Bottom wall part, 3 ... Long side wall part, 4 ... Short side wall part, 6 ... Long side side base part, 7 ... Short side side base part, 31 ... Holding mechanism, 32 ... Upper convex part, 33 ... lower side protrusion, 34 ... connecting member, 38 ... locking projection, 39 ... support part, 42 ... locking hole.

Claims (3)

A substantially rectangular plate shape, and a bottom wall portion having a base portion protruding upward along each side portion, and a side wall portion rotatably connected to each of the base portions,
Each of the side wall portions is a folding container configured to be rotatable and displaceable between an upright position standing above the base portion and a laying position folded above the bottom wall portion,
An upper protrusion protruding from the inner surface of the at least one side wall;
A lower convex portion projecting from the inner surface of the base portion supporting the side wall portion, and
A connecting member provided slidably with respect to one of the upper convex portion and the lower convex portion,
When the side wall portion is in the standing position, the upper convex portion and the lower convex portion are arranged to face each other with a predetermined distance in the vertical direction,
The connecting member includes a connecting position extending so as to be bridged from one of the upper convex portion and the lower convex portion when the side wall portion is in the standing position, and the upper convex portion and A folding container that is configured to be slidably displaceable from a separated position that is separated from the other of the lower convex portions and allows the side wall portion to be tilted and displaced toward the lying position side.   The connecting member is slidably attached to the upper convex portion, and the lower convex portion is provided with a support portion that comes into contact with the lower side portion of the connecting member at the connecting position. The folding container according to claim 1.   The said upper side convex part is provided with the latching | locking part used as the latching | locking part provided in the said connection member when the said connection member is made into the said separation | spacing position. 2. The folding container according to 2.

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