JP7276986B2 - collapsible container - Google Patents

Description

The present invention relates to collapsible containers.

Patent Literature 1 discloses a collapsible container for transporting waste. This collapsible container for transporting waste consists of a pair of facing front panels, a pair of facing side panels, and a base portion to which the front and side panels are attached and provided with claw-inserting portions for a forklift on its four circumferences. It has The pair of front panels and the pair of side panels are rotatably attached via torsion bars in a state in which an assisting force is generated in the base portion.

JP 2016-172598 A

The collapsible container for transporting waste described in Patent Document 1 is intended for transporting waste such as crushed plastic. For this reason, objects to be transported can only be put into the storage space formed by the base portion and the four panels raised from the base portion from the side opposite to the base portion, that is, from the upper side.

For example, assume a collapsible container for storing packed transportation items in small portions. In this case, the goods are carried in and out of the collapsible container using a forklift. As in Patent Document 1, the configuration in which the material to be transported can be loaded only from the upper side cannot handle loading and unloading of the material to be transported using a forklift. Moreover, even if a forklift is not used, the efficiency of loading and unloading is greatly reduced if the transported items can only be loaded and unloaded from the upper side of the storage space.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a foldable container capable of efficiently loading and unloading goods.

The collapsible container of the present invention comprises, in an assembled state, a bottom wall on which a transport item is placed, a first wall erected from an end of the bottom wall and spaced apart in a first direction. container housing surrounded by a portion and a second wall portion, and a third wall portion and a fourth wall portion erected from the end portion of the bottom wall portion and spaced apart in a second direction perpendicular to the first direction; A collapsible container forming a space, comprising a base member forming the bottom wall portion, and the first base member rotatably supported near a first base end on one side in the first direction of the base member. A first folding member capable of forming one wall portion, and a second foldable member capable of forming the second wall portion by being rotatably supported near a second base end portion on the other side of the base member in the first direction. A folding member is rotatably supported by at least one of a first end of the first folding member on one side in the second direction and a second end of the second folding member on one side of the second direction. and a first front member capable of forming the third wall portion.

ADVANTAGE OF THE INVENTION According to this invention, the foldable container which can carry out the carrying in/out of a transport efficiently can be provided.

1 is an assembled perspective view of an embodiment of a collapsible container according to the present invention; FIG. Fig. 2 is a schematic exploded perspective view schematically showing the basic configuration of the folding container shown in Fig. 1; FIG. 2 is a schematic side view of the collapsible container shown in FIG. 1, with the first side member and the second side member being disassembled and partly cut away; FIG. 2 is a schematic front view of the first front member and the second front member of the folding container shown in FIG. 1 as seen from the front-rear direction; FIG. 3 is a perspective view showing a state in which the second sub-member is opened in the collapsible container shown in FIG. 1; Fig. 2 is a front view of the collapsible container shown in Fig. 1 in a folded state; 7 is an enlarged exploded perspective view of the rotation assisting mechanism shown in FIG. 6; FIG. FIG. 2 is a front view of the lid member shown in FIG. 1; FIG. 9 is a perspective view showing a stacking state of the lid members shown in FIG. 8 ; FIG. 2 is a perspective view showing a stacking state of the folding containers shown in FIG. 1; FIG. 2 is a perspective view of the foldable container shown in FIG. 1 in a folded state with a lid member attached; FIG. 12 is a perspective view showing a stacking state of the foldable containers shown in FIG. 11 in a folded state; Fig. 7 is a perspective view showing the initial operation of raising the folding members of the collapsible container in the collapsed state shown in Fig. 6; FIG. 14 is a perspective view showing an operation to be performed next to the assembling operation shown in FIG. 13; FIG. 15 is a perspective view showing the loading of goods into the partially assembled collapsible container shown in FIG. 14; FIG. 16 is a perspective view showing a state in which a lid member is installed with respect to the folding container in the state shown in FIG. 15; FIG. 17 is a perspective view showing an operation of closing the first front member (front side) and the second front member (rear side) in the folding container in the state shown in FIG. 16; FIG. 10 is a front view showing an example of unloading a transport item from a folding container; 1 is a schematic exploded perspective view of a first variant of a collapsible container according to the invention; FIG. FIG. 11 is a schematic exploded perspective view of a second variant of the collapsible container according to the invention;

A foldable container (hereinafter also simply referred to as "container") according to an embodiment of the present invention will be described below with reference to FIGS. 1 to 18. FIG. Regarding the description of the directions in the drawings, the first direction (horizontal direction) of the container is X, the second direction (front-back direction) orthogonal to the first direction is Y, and the third direction orthogonal to the first and second directions ( vertical direction) is indicated as Z.

<Overall structure of the container>
A schematic structure of the container 100 of this embodiment will be described with reference to FIGS. 1 and 2. FIG.
First, the container 100 in an assembled state will be described in outline. As shown in FIG. A rectangular plate-shaped first wall portion 1 erected upward from one (left) end portion of 5 in the first direction X, and from the other (right) end portion of the bottom wall portion 5 in the first direction X A rectangular plate-shaped second wall portion 2 erected upward, and a rectangular plate-shaped third wall portion 3 erected upward from one (front) end of the bottom wall portion 5 in the second direction Y. and a rectangular plate-shaped fourth wall portion 4 erected upward from the other (rear) end portion of the bottom wall portion 5 in the second direction Y. A container storage space SP1 is provided. In addition, a plate-like lid wall portion 6 that closes the upper portion of the container storage space SP1 is provided as necessary. As a result, the container storage space SP1 is a substantially rectangular parallelepiped or substantially cubic space closed in all directions. Note that the first wall portion 1, the second wall portion 2, the third wall portion 3, and the fourth wall portion 4 are all approximately the same as the bottom surface of the base member 200, which will be described later, in the assembled state of the container 100. configured vertically. Furthermore, the first wall portion 1 and the third wall portion 3 are substantially perpendicular to each other, and the first wall portion 1 and the fourth wall portion 4 are substantially perpendicular to each other.

Next, referring to the schematic exploded perspective view (FIG. 2) of the schematic configuration of each of the first wall portion 1, the second wall portion 2, the third wall portion 3, the fourth wall portion 4, and the bottom wall portion 5, explain. As shown in FIG. 2, the container 100 includes a base member 200, a first folding member 30L comprising a first side member 31, a first front member 400L and a second front member 500L, and a second side member 32. , a first front member 400R and a second front member 500R, and a lid member 600 constituting the lid wall portion 6. Hereinafter, the first front member 400L and the first front member 400R are collectively referred to as the first front member 400. As shown in FIG. Also, the second front member 500L and the second front member 500R are collectively referred to as the second front member 500. As shown in FIG.

The bottom wall portion 5 is composed of a base member 200 . The base member 200 includes a substantially rectangular plate-shaped bottom member 210 that is perpendicular to the up-down direction, and a substantially rectangular plate-shaped that rises upward from a first base end 201 on the left side of the bottom member 210 on which the transported article P is placed. and a substantially rectangular plate-shaped base side member 220 rising upward from the second base end 202 on the right side of the bottom surface member 210 .

The first wall portion 1 is composed of the left side base member 220 of the base member 200 and the first side member 31 of the first folding member 30L.

The second wall portion 2 is composed of the base side member 220 on the right side of the base member 200 and the second side member 32 of the second folding member 30R.

The third wall portion 3 is composed of a pair of left and right first front members 400 (400L, 400R) and part of the base member 200. As shown in FIG.

The fourth wall portion 4 is composed of a pair of left and right second front members 500 (500L, 500R) and part of the base member 200. As shown in FIG.

In this manner, the left and right and front and rear wall members of the container 100 are configured by the first folding member 30L and the second folding member 30R that are foldable as described later.

The first folding member 30L constitutes a substantially rectangular plate-shaped first side member 31 that constitutes a part of the first wall portion 1 located on the left side of the container 100, and the left half side of the third wall portion 3. A first front member 400L, a second front member 500L forming the left half side of the fourth wall 4, and a pair of legs 18 spaced apart in the front-rear direction at the lower end of the first side member 31. , provided.

The pair of legs 18 are rotatably attached near the first base end 201 on the left side of the base member 200 . The first front member 400L is rotatably provided at the front first end 31f of the first side member 31 . The second front member 500L is rotatably provided at the rear third end 31r of the first side member 31 .

The second folding member 30R is of exactly the same construction as the first folding member 30L. That is, the second folding member 30R is configured by connecting the substantially rectangular plate-shaped second side member 32, which constitutes a part of the second wall portion 2 located on the right side of the container 100, and the right half side of the third wall portion 3. A first front member 400R, a second front member 500R forming the right half side of the fourth wall 4, and a pair of legs spaced apart in the front-rear direction at the lower end of the second side member 32. 18 and.

A pair of legs 18 of the second folding member 30R are rotatably attached near the second base end 202 on the right side of the base member 200 . The first front member 400R is rotatably provided at the front second end 32f of the second side member 32 . The second front member 500R is rotatably provided at the fourth end 32r on the rear side of the second side member 32. As shown in FIG.

The rotation of the first front member 400 and the second front member 500 referred to here is performed by a hinge portion 60, which will be described later. These rotation axes are axes along a third direction Z (hereinafter also referred to as "vertical direction" in the present embodiment) orthogonal to the left-right direction and the front-rear direction in the assembled state of the container. That is, the rotation axis is the axis along the first end 31f, the third end 31r, the second end 32f, and the fourth end 32r.

The first folding member 30L and the second folding member 30R attached to the base member 200 in this manner can be rotated so as to fall inside the left and right base side members 220 . Also, the first front member 400 and the second front member 500 can be folded with respect to the first side member 31 and the second side member 32 . This allows the first folding member 30L and the second folding member 30R to be folded and accommodated inside the base side member 220. As shown in FIG.

<Structure of First Folding Member and Second Folding Member>
The first side member 31 of the first folding member 30L and the second side member 32 of the second folding member 30R will be described in detail with reference to FIG.
Since the structures of the first folding member 30L and the second folding member 30R are the same, the reference numerals for both members are duplicated in FIG. Also, the illustration shows a state in which the first folding member 30L and the second folding member 30R are raised.

As shown in FIG. 3, the first side member 31 and the second side member 32 have legs 18 below vertical frames 38, 38 that constitute the front and rear first end 31f and third end 31r. are doing. An upper frame 35 and a lower frame 36 are connected in the longitudinal direction between the vertical frames 38, 38 to form an outer frame member having a rectangular shape as a whole. Furthermore, it has a framework structure in which a plurality of middle frames 17 are provided in a grid pattern within the outer frame member. Moreover, a wall plate 19 is attached to the entire surface so as to be appropriately supported by the frames 35 , 36 , 38 and the middle frame 17 . For example, three hinge portions 60 are provided on each of the vertical frames 38 , 38 . The hinge portion 60 is a portion that rotatably attaches the first front member 400 and the second front member 500 .

Since the first front member 400 and the second front member 500 are rotatable by the hinge portion 60 in this manner, the first front member 400 and the second front member 500 can be connected to the first side member 31 and the second side member 31 . It becomes possible to fold so as to overlap the member 32 .

The first front member 400 and the second front member 500 will be described with reference to FIG. The first front member 400 and the second front member 500 each have a pair of left and right opening/closing door structures, but since the structure is symmetrical in the front and rear, the reference numerals of both members are duplicated in FIG. description is omitted as appropriate.

As shown in FIG. 4, the first front member 400R on the right side is provided with three hinge portions 60 on the side of the second end portion 32f of the second side member 32 (see FIG. 2 etc., on the right side in the drawing). ing. This hinge portion 60 is combined with the hinge portion 60 of the second side member 32, and attached via a pin member 62 or the like so as to be openable and closable. The first front member 400R has an upper first sub-member 34a and a lower second sub-member 34b, and has a structure in which both members are connected.

The first sub-member 34a is a framework in which the vertical frames 48, 48 and the upper and lower frames 45, 46 form a substantially square outer frame, and the middle frame 17 is provided inside the outer frame member. is provided. In the assembled state of the container 100, the outer side of the first sub-member 34a is provided with, for example, a vertically movable first locking member 71 and a laterally sliding type lock member 71 for maintaining the first front member 400R in a closed state. of the second locking member 72 is provided.

Like the first sub-member 34a, the second sub-member 34b is formed of vertical frames 48b, 48b and upper and lower frames 45b, 46b to form an outer frame member, and has a horizontally long substantially rectangular shape with the middle frame 17 provided inside it. A wall plate 19 is provided on the framework. A projecting wall portion 221 of the base member 200 is formed adjacent to the lower portion of the second sub-member 34b. The second sub-member 34b is narrower than the first sub-member 34a so as to correspond to the projecting wall portion 221, and has a shape that is notched from the left and right ends toward the center. In other words, the left and right short sides of the second sub-member 34b (vertical frame 48b at the right end in FIG. 4) are deformed so as to be recessed inward from top to bottom. The second sub-member 34b is provided so as to open outward via a hinge portion 70 attached to the lower frame 46 of the first sub-member 34a. That is, the second sub-member 34b can be opened and closed independently of the first sub-member 34a, as shown in FIG.

Therefore, the second sub-member 34b can be folded outwardly with respect to the first sub-member 34a. Since the first front member 400R also has a folding structure in the vertical direction as described above, the opening/closing portion can be folded into a smaller size, and the storability is good. Furthermore, the vertical frame 48b of the second sub-member 34b has a shape deformed so as to be recessed inward in the left-right direction. Therefore, when the first front member 400R is folded, the vertical frame 48b does not interfere with the hinge portion 60, and it can be folded while suppressing bulging. In order to keep the second sub-member 34b closed (the state shown in FIG. 4), for example, a vertically movable third locking member 73 is provided. Therefore, it is possible to prevent the accommodated transported articles P from falling, and as shown in FIG. 5, it can be opened and closed independently of the first sub-member 34a, so that it can be used as a window, for example.

The left first front member 400L has a structure that is bilaterally symmetrical to the right first front member 400R except for the second lock member 72 portion. By configuring the first front member 400 with the first front members 400L and 400R in a state where the first front member 400 is divided into left and right parts in this manner, the weight of the rotating portion can be reduced. In addition, the movable range can be configured to be relatively small, and assembly work can be performed even in a limited space. Further, by reducing the weight, the size of the hinge portion 60 can be reduced.

Also, the second front member 500 has exactly the same configuration as the first front member 400 . Therefore, in the assembled state of the container 100, the third wall portion 3 on the front side and the fourth wall portion 4 on the rear side can be opened and closed independently. Since the front and rear of the container 100 can be opened and closed in this way, the usability of the container is improved, the options for the direction in which the transported goods P are carried in and out are increased, and the working efficiency at the time of carrying in and out is improved.

<Structure of base member>
As shown in FIG. 6, the back side of the bottom member 210 of the base member 200 is provided with an insertion hole 200h into which a fork 800 of a forklift (see FIG. 16) can be inserted, for example. In addition, projecting wall portions 221 are provided at both ends in the front-rear direction of the left and right base side members 220 . That is, the protruding wall portion 221 is a wall surface protruding inward in the left-right direction, and can rotatably support the leg portions 18 of the first folding member 30L and the second folding member 30R.

Further, the support shaft portion 88 of the leg portion 18 provided on the protruding wall portion 221 is located at a predetermined distance (h) from the bottom surface member 210, as shown in FIG. Since the support shaft portion 88 is separated from the bottom member 210 in this way, it is possible to secure the folding accommodating space SP2 for the first folding member 30L and the second folding member 30R. As a result, the first folding member 30L and the second folding member 30R can be efficiently accommodated inside the base side member 220, and the height when folded can be suppressed.

As shown in FIG. 6, base-side concave portions 204 having a triangular cross section are provided on the rear surface side (lower side in the figure) of the bottom surface member 210 of the base member 200 on both left and right sides. Base-side projections 226 having a triangular cross section are formed at the upper ends of the left and right base side members 220 . Here, the base-side concave portion 204 and the base-side convex portion 226 are formed into shapes that can be fitted into each other. That is, the base-side concave portion 204 and the base-side convex portion 226 have the same uneven shape, and are provided at positions where they overlap in the height direction of the base member 200 . Therefore, the base-side concave portion 204 of another container 100 can be fitted with its own base-side convex portion 226 . As a result, the folded container 100 can be stacked in the folded state.

<Structure of Rotation Assist Mechanism>
The rotation assisting mechanism 8 is a mechanism that biases the leg portion 18 in a predetermined direction around the support shaft portion 88 . Specifically, as shown in FIG. 7, for example, a torsion spring 28 is attached to one end of the leg portion 18, and the urging force of the torsion spring 28 imparts a rotational force. More specifically, the leg portion 18 is provided with, for example, a bracket 48A, and a bolt or the like constituting the support shaft portion 88 is passed through a hole in the bracket 48A. The support shaft portion 88 is appropriately supported on the side of the base member 200 by penetrating, for example, the projecting wall portion 221 . Further, the torsion spring 28 is held through the support shaft portion 88 with, for example, a sleeve member 38a interposed therebetween. Here, the tip of the support shaft portion 88 is locked by a nut 58 or the like, for example. The biasing end portion 28a on one end side of the torsion spring 28 is brought into contact with the spring receiving surface 48c on the leg portion 18, and the locking end portion 28b on the other end side is engaged with the base side member 220 side. .

In the rotation assisting mechanism 8 configured as described above, the biasing end portion 28a of the torsion spring 28 presses the spring receiving surface 48c with a predetermined biasing force F, and the leg portion 18 is always pressed. In particular, when the first folding member 30L and the second folding member 30R are laid down, the force pushing these members in the upward direction is increased. In this embodiment, the biasing force is zero when the first folding member 30L and the second folding member 30R are raised. Thus, the biasing force of the torsion spring 28 causes the first folding member 30L and the second folding member 30R to weigh less than their actual weight when being lifted or folded. Therefore, the operation force for moving the first folding member 30L and the second folding member 30R can be reduced, and the work load on the operator can be reduced. Moreover, safety can be improved. It should be noted that the present invention is not limited to this embodiment, and an appropriate biasing force may always be applied in the rising direction to the first folding member 30L and the second folding member 30R.

<Structure of lid member>
As shown in FIGS. 8 and 9, the lid member 600 is a rectangular member in a plan view, and has right and left ends that can be installed on the upper ends of the first side member 31 and the second side member 32 . It has configuration. Specifically, as shown in FIG. 9, the lid member 600 is a rectangular member in a plan view formed by left and right frames 610 on both left and right sides and front and rear frames 611 on the front and rear sides. 615 is provided and the entire surface is covered with a wall plate 619 . Also, on the upper surface side (front side) of the lid member 600, raised portions 602 having a predetermined height are provided at the four corners. A plurality of claw insertion portions 603 arranged in two rows in the left-right direction are provided between the rising portions 602 . As shown in FIG. 9, the rising portions 602 can form a predetermined interval when the lid members 600 are stacked. Further, the claw insertion portion 603 can insert and hold a fork 800 (see FIG. 16) of a forklift from the front-rear direction.

As shown in FIG. 8, the lower surfaces of the left and right frames 610 on the left and right ends of the lid member 600 are provided with first concave portions 604 having triangular concave cross-sectional shapes. On the other hand, the rising portion 602 has a first convex portion 605 having a triangular cross section on its upper end surface. Also, the first concave portion 604 and the first convex portion 605 are provided at positions overlapping each other in the thickness direction (height direction) of the lid member 600 . As a result, when stacking a plurality of lid members 600 , the first concave portion 604 and the first convex portion 605 can fit together vertically adjacent to each other. Therefore, when the lid members 600 are stacked, the triangular concave-convex shapes are fitted to each other so that the stacked lid members 600 are positioned and fixed in the left-right direction. On the other hand, the positioning and fixing of the cover members 600 in the front-rear direction can be performed by a flange portion 602 f that protrudes upward from the first convex portion 605 on the outer edge of the rising portion 602 .

When the container is assembled, the lid member 600 is installed at the top as shown in FIG. is installed as follows. At the upper ends of the first side member 31 and the second side member 32, the upper surface of the upper frame 35 (see FIG. 3) is configured to have a triangular convex shape. It fits in the recess 604 and is positioned in the left-right direction. On the other hand, the positioning of the cover member 600 in the front-rear direction can be performed by the flanges 35f (see FIG. 3) provided at the front-rear ends of the upper frame 35, and the movement of the cover member 600 in the front-rear direction can be controlled by the flanges 35f. can be locked. With the lid member 600 installed in this manner, the container storage space SP1 in the assembled state can be closed without any gaps, and the transported goods P can be reliably protected.

In addition, in the assembled state of the container, the base-side concave portion 204 of the base member 200 and the first convex portion 605 of the rising portion 602 of the lid member 600 are configured to fit together at positions where they overlap in the vertical direction. With this configuration, as shown in FIG. 10, the containers can be stably stacked in an assembled state without shifting in any of the front, rear, left, and right directions.

11, the folded container 100 (the state shown in FIG. 6) is in a state in which the lid member 600 is placed on the folded container 100, that is, the folded container 100 with the lid member 600 attached. It can be stored and transported individually as a container 100 . Furthermore, as shown in FIG. 12, it can be stored and transported in a folded and stacked state.

In this way, the first convex portion 605 provided on the front side of the lid member 600 and the base side concave portion 204 provided on the back side (lower side) of the base member 200 can be fitted to each other, so that in both the assembled state and the folded state, Also, the containers 100 can be stably stacked. Moreover, since the first concave portion 604 provided on the back side of the lid member 600 and the first convex portion 605 provided on the front side of the lid member 600 are configured to be fittable, stacking can be performed using only the lid member 600 .

As described above, the container 100 is symmetrical in shape and folding structure in the left-right direction and the front-rear direction. This eliminates the need to worry about the order of operations during assembly and storage. For example, whichever of the first folding member 30L and the second folding member 30R is folded first, it can be folded and assembled without any trouble. In addition, the symmetrical shape of the folded shape allows the parts to be made the same, thereby reducing the number of types of parts and facilitating manufacturing.

<Container assembly operation>
The method of assembling the container 100 and the loading and unloading of the goods P will be described below with reference to FIGS. 13 to 18. FIG.
First, with respect to the container 100 folded as shown in FIG. 6, as shown in FIG. 13, the right second folding member 30R, which is laid down sideways, is pulled up by holding the grip portion 40, for example. By this pulling operation, the second folding member 30R rotates clockwise and stands up. In this lifting operation, the biasing force of the rotation assisting mechanism 8 is applied, so that the lifting operation can be performed with an extremely light force.

Next, the left first folding member 30L is pulled up in a counterclockwise direction as shown in FIG. In this way, the assembly of the container is temporarily stopped in the state where the first folding member 30L and the second folding member 30R are raised. As the next work, as shown in FIG. 15, the transported goods P are placed and piled up on the bottom member 210 . At this time, since the front and rear of the container 100 are released, the goods P can be carried in from either the front or rear.

16, the lid member 600 is put on the upper frame 35 of the first side member 31 and the second side member 32 to cover them. This work can be done by a plurality of workers if the container 100 is small and light. Work can be done easily.

After covering with the lid member 600, as shown in FIG. 17, the front first front member 400 and the rear second front member 500 are closed. After that, a locking operation is performed so that the closed first front member 400 and second front member 500 are not opened. This locking operation operates and locks the first locking member 71 and the second locking member 72 provided on the first sub-member 35a and the third locking member 73 provided on the second sub-member 35b.

As described above, the container 100 in which the goods to be transported P are housed has the insertion holes 200h into which the forks 800 of the forklift can be inserted in all four directions on the side surface of the base member 200. can be lifted by Therefore, for example, as shown in FIG. 10, it can be easily stacked in a stacked state.

To unload the transported goods P from the container 100, for example, as shown in FIG. Then, the container 100 from which all the transported items P have been unloaded is stored and transported in a folded state when it is not used after being replaced with another transported item P. In this case, as shown in FIG. 6, the folded state of the container 100 main body and the lid member 600 are separately stored and transported, or as shown in FIG.・Transport.

The embodiments described above can be appropriately modified, improved, and the like. For example, the configurations of the first folding member 30L and the second folding member 30R can be variously modified, for example, modified as shown in FIGS. 19 and 20. FIG.

(First modification)
A first modified example will be described with reference to FIG. 19 is shown as a schematic exploded perspective view corresponding to FIG. Further, in the description of this modification, the same components as those of the embodiment shown in FIG. 2 are given the same reference numerals as in FIG. 2, and the description thereof is omitted.
The configuration of this modified example differs from the double-opening structure of the embodiment shown in FIG. 2 in that the first front member 400 and the second front member 500 have a single-opening structure. That is, both the first front member 400 and the second front member 500 are configured to include one first sub-member 34a, 35a and one second sub-member 34b, 35b. The first folding member 30L and the second folding member 30R in this case have exactly the same configuration. In this case, the first front member 400 and the second front member 500 have fewer parts to be opened and closed, and can reduce the number of opening and closing operations as well as the locking operation.

(Second modification)
A second modification will be described with reference to FIG. In the description of this modified example, as in the first modified example, the same components as those in the embodiment shown in FIG. 2 are denoted by the same reference numerals as in FIG.
In the configuration of this modified example, the first front member 400 has the same structure as that shown in FIG. That is, as a member that replaces the second front member 500, it is possible to close by providing, for example, a freely attachable single plate instead of a door-like openable structure. In this case, the first folding member 30L and the second folding member 30R can be made smaller and lighter.

As described above, this specification discloses the following matters. In addition, although the parenthesis shows the components corresponding to the above-described embodiment, the present invention is not limited to this.

(1) In the assembled state, a bottom wall portion (bottom wall portion 5) on which a transport object is placed, erected from an end portion of the bottom wall portion and spaced apart in the first direction (X direction). A first wall portion (first wall portion 1) and a second wall portion (second wall portion 2), which are provided upright from the end of the bottom wall portion and perpendicular to the first direction (Y A foldable container forming a container storage space (container storage space SP1) surrounded by a third wall portion (third wall portion 3) and a fourth wall portion (fourth wall portion 4) spaced apart in the direction). (Foldable container 100),
a base member (base member 200) forming the bottom wall;
A first folding member (first folding member) which is rotatably supported in the vicinity of a first base end (first base end 201) on one side of the base member in the first direction and which can constitute the first wall. folding member 30L);
A second folding member (second folding member 30R);
A first end of the first folding member on one side in the second direction (first end 31f) and a second end of the second folding member on one side in the second direction (second end 32f) ), and a first front member (first front member 400) capable of forming the third wall by being rotatably supported by at least one of the collapsible containers.

According to (1), the first folding member capable of forming the first wall portion of the container and the second folding member capable of forming the second wall portion of the container are rotatably supported with respect to the base member; At least one of the folding member and the second folding member is rotatably provided with the first front member capable of forming the third wall, so that the third wall can be opened and closed even when the container is assembled. It is possible to provide a foldable container in which transport items can be carried in and out at least from the front side of the container.

(2) The collapsible container according to (1),
The first front member is a collapsible container comprising members (first front member 400R, first front member 400L) supported by the first end and the second end.

According to (2), since the first front member is composed of members whose opening and closing are pivotally supported, the movable range can be configured to be relatively small, and the assembly work can be performed even in a limited space. can be done. In addition, since the weight of each member constituting the first front member can be reduced, the structure of the hinge and the like for rotating the first front member can be lightened and simplified.

(3) The collapsible container according to (1) or (2),
The base member includes a bottom surface member (bottom surface member 210) on which the transport object is placed, and a pair of base side surface members (base side surface members 220) erected from both ends of the bottom surface member in the first direction. have
A collapsible container, wherein the first wall is defined by one of the base side members and the first folding member, and the second wall is defined by the other base side member and the second folding member.

According to (3), since the base member has a pair of base side members rising from both ends of the bottom member, the first folding member and the second folding member can be folded and accommodated using the height of both base side members. A possible folding accommodation space can be secured, and the folding height of the container can be reduced. In addition, it becomes possible to superimpose using the base side surface member, which facilitates stacking.

(4) The collapsible container according to (3),
The first front member is a collapsible container having a first sub-member (first sub-member 34a) and a second sub-member (second sub-member 34b) foldable relative to the first sub-member.

According to (4), the first front member is composed of a plurality of members of the first sub-member and the second sub-member that can be folded relative to the first sub-member, and has a folding structure, so that it becomes smaller when folded. It is possible to increase the capacity of the first front member.

(5) The collapsible container according to (4),
The collapsible container, wherein the second sub-member can be opened and closed independently of the first sub-member in an assembled state and can be locked for opening and closing.

According to (5), since the second sub-member can be opened and closed independently of the first front member in the assembled state, it can be used as a window of the first front member. In addition, since the second sub-member can be opened and closed and locked, it is possible to prevent the transported items from falling.

(6) The collapsible container according to any one of (3) to (5),
The support shaft portion (support shaft portion 88) of the first folding member axially supported by one of the base side members, and the shaft support portion (support shaft portion 88) of the second folding member axially supported by the other base side member. Axle 88) of the collapsible container is provided at a predetermined distance from the bottom member.

According to (6), since the shaft support portions of the first folding member and the second folding member are provided apart from the bottom member, a space can be formed between the bottom member and the shaft support portion. By using this space as a storage space for both folding members, it is possible to prevent upward projection of the folded portion and reduce the height when folded. As a result, it is possible to provide a foldable container that is compact in its folded state.

(7) The collapsible container according to any one of (1) to (6),
A folding container comprising a rotation assisting mechanism (rotation assisting mechanism 8) for urging each of said first folding member and said second folding member to rotate in a direction to stand up with respect to said base member.

According to (7), since the first folding member and the second folding member are urged in the direction in which they stand up by the rotation assisting mechanism, a small operating force is required when raising or folding them. As a result, it is possible to provide a collapsible container that reduces the work load during assembly and folding and that is highly safe.

(8) The collapsible container according to any one of (1) to (7),
A third end (third end 31r) on the other side in the second direction of the first folding member and a fourth end (fourth end 32r) on the other side in the second direction of the second folding member ), a second front member (second front member 500) rotatably supported by at least one of
A collapsible container wherein said fourth wall is defined by said second front member.

According to (8), since the third wall portion and the fourth wall portion can be opened and closed respectively in the assembled state of the folding container, it is possible to increase the options for the direction of loading and unloading of transported items. As a result, the usability of the container can be improved, and the work efficiency at the time of loading and unloading can be improved.

(9) The collapsible container according to any one of (1) to (8),
A collapsible container comprising a lid member (lid member 600) that closes the container storage space in an assembled state.

According to (9), the container storage space can be completely closed by having the cover member, and the transported goods can be protected more effectively. In addition, it is also possible to prevent rainwater and the like from entering the container.

(10) The collapsible container according to (9),
A foldable container in which the lid member is provided with a claw insertion portion (claw insertion portion 603) into which a fork of a forklift (fork 800) can be inserted.

According to (10), since the lid member is provided with a claw insertion portion into which a fork of a forklift can be inserted, a forklift can be used when moving the lid member, and workability can be improved.

(11) The collapsible container according to (9) or (10),
The lid member has a first concave portion (first concave portion 604) formed on the surface facing the base member, and a first convex portion (first convex portion 605) formed on the surface opposite to the base member side. ,
The first concave portion is configured to be fittable with the first convex portion provided on the other lid member,
A foldable container, wherein the first convex portion is configured to be fittable into the first concave portion provided on the other lid member.

According to (11), the first concave portion provided on the back surface side of the lid member and the first convex portion provided on the front surface side can be fitted to the first concave portion and the first convex portion of the other lid member. Since it is configured, a plurality of lid members can be stacked together.

(12) The collapsible container according to (11),
The base member includes a bottom surface member (bottom surface member 210) on which the transport object is placed, and a pair of base side surface members (base side surface members 220) erected from both ends of the bottom surface member in the first direction. have
A base-side concave portion (base-side concave portion 204) that can be fitted to the first convex portion of the lid member is provided on the back surface side of the bottom member,
A collapsible container in which a base-side protrusion (base-side protrusion 226) that can be fitted into the first recess of the lid member is provided at the upper end of the base side surface member.

According to (12), the first convex portion of the lid member and the base-side concave portion provided on the back side of the base member are configured to be fittable, so that the back surface of the container and the top surface of the container provided with the lid member Stable stacking becomes possible. In addition, since the first concave portion of the lid member and the base-side convex portion of the base side member are configured to be fittable, the lid member can cover the container in the folded state, and the container can be stacked in this state. is.

(13) The collapsible container according to any one of (1) to (12),
A collapsible container configured substantially symmetrically in each of the first direction and the second direction.

According to (13), the collapsible container is substantially symmetrical in the first direction and the second direction (left, right, front, back), so there is no need to worry about the order of operations during assembly and storage ( Either the first folding member or the second folding member can be folded or raised first for folding or assembly). In addition, the symmetrical structure allows the same parts to be used, thereby reducing the number of parts or the types of parts and facilitating manufacturing.

Regarding the folding container according to the present invention, specific numerical examples are listed below.
External dimensions: Horizontal width 2,280 mm, longitudinal depth 1,950 mm, vertical height when assembled (with lid member) 2,130 mm, vertical height when folded (with lid member) 890mm
Maximum loading mass: 1,000 kg, weight: about 420 kg (total mass: about 1,420 kg)
Cargo handling method: Forklift (4-way insertion)
According to the folding container described above, it can be transported by both an ISO standard international marine transport container (20ft and 40ft containers) and a truck. In addition, it will be possible to unitize the transportation, which has been carried out in units of marine containers so far, in smaller units, and it will be possible to realize the optimization of the transportation plan.

1 First wall portion 2 Second wall portion 3 Third wall portion 4 Fourth wall portion 5 Bottom wall portion 6 Lid wall portion 8 Rotation assisting mechanism 30L First folding member 30R Second folding member 31f First end portion 32f Second end 31r Third end 32r Fourth end 34a, 35a First sub-members 34b, 35b Second sub-member 88 Support shaft 100 Collapsible container 200 Base member 201 First base end 202 Second base end 204 base-side concave portion 210 bottom member 220 base side-surface member 226 base-side convex portions 400, 400L, 400R first front member 500, 500L, 500R second front member 600 lid member 603 claw insertion portion 604 first concave portion 605 first convex portion 800 fork P transportation object SP1 container storage space SP2 storage space

Claims (12)

In an assembled state, a bottom wall portion on which a transport object is placed, a first wall portion and a second wall portion erected from an end portion of the bottom wall portion and spaced apart in the first direction, A collapsible container that forms a container storage space surrounded by a third wall portion and a fourth wall portion that are erected from the end of a bottom wall portion and spaced apart in a second direction perpendicular to the first direction. There is
a base member forming the bottom wall;
a first folding member rotatably supported in the vicinity of a first base end on one side of the base member in the first direction and capable of forming the first wall;
a second folding member rotatably supported in the vicinity of a second base end on the other side of the base member in the first direction and capable of forming the second wall;
The first folding member is rotatably supported by at least one of a first end of the first folding member on one side in the second direction and a second end of the second folding member on one side in the second direction. a first front member capable of forming three wall portions ,
The base member has a bottom member on which the transported object is placed, and a pair of base side members erected from both ends of the bottom member in the first direction,
The first wall portion is configured by one of the base side members and the first folding member,
The second wall portion is configured by the other base side member and the second folding member,
A collapsible container, wherein said first front member has a first sub-member and a second sub-member collapsible relative to said first sub-member . A collapsible container according to claim 1, comprising:
A collapsible container, wherein said first front member comprises a member supported at each of said first end and said second end. A collapsible container according to claim 1 or 2 ,
The collapsible container, wherein the second sub-member can be opened and closed independently of the first sub-member in an assembled state and can be locked for opening and closing. A collapsible container according to any one of claims 1 to 3 ,
The support shaft of the first folding member axially supported by one of the base side members and the shaft support of the second folding member axially supported by the other base side member are a predetermined distance from the bottom member. A collapsible container located at a distance. A collapsible container according to any one of claims 1 to 4 ,
A collapsible container comprising a rotation assisting mechanism for urging each of said first folding member and said second folding member in a direction to stand up with respect to said base member. A collapsible container according to any one of claims 1 to 5 ,
A second folding member rotatably supported by at least one of a third end of the first folding member on the other side in the second direction and a fourth end of the second folding member on the other side in the second direction. comprising a front member,
A collapsible container wherein said fourth wall is defined by said second front member. A collapsible container according to any one of claims 1 to 6 ,
A collapsible container comprising a lid member closing said container storage space in an assembled state. A collapsible container according to claim 7 ,
A collapsible container in which the lid member is provided with a claw insertion portion into which a fork of a forklift can be inserted. A collapsible container according to claim 7 or 8 ,
The lid member has a first concave portion formed on the surface on the base member side, and a first convex portion formed on the surface opposite to the base member side,
The first concave portion is configured to be fittable with the first convex portion provided on the other lid member,
A foldable container, wherein the first convex portion is configured to be fittable into the first concave portion provided on the other lid member. A collapsible container according to claim 9 ,
The base member has a bottom member on which the transported object is placed, and a pair of base side members erected from both ends of the bottom member in the first direction,
A base-side concave portion that can be fitted to the first convex portion of the lid member is provided on the back surface side of the bottom surface member,
A collapsible container in which a base-side protrusion that can be fitted into the first recess of the lid member is provided at the upper end of the base side member. A collapsible container according to any one of claims 1 to 10 ,
A collapsible container configured substantially symmetrically in each of the first direction and the second direction. In an assembled state, a bottom wall portion on which a transport object is placed, a first wall portion and a second wall portion erected from an end portion of the bottom wall portion and spaced apart in the first direction, A collapsible container that forms a container storage space surrounded by a third wall portion and a fourth wall portion that are erected from the end of a bottom wall portion and spaced apart in a second direction perpendicular to the first direction. There is
a base member forming the bottom wall;
a first folding member rotatably supported in the vicinity of a first base end on one side of the base member in the first direction and capable of forming the first wall;
a second folding member rotatably supported in the vicinity of a second base end on the other side of the base member in the first direction and capable of forming the second wall;
The first folding member is rotatably supported by at least one of a first end of the first folding member on one side in the second direction and a second end of the second folding member on one side in the second direction. a first front member capable of forming three walls;
a lid member that closes the container storage space in an assembled state,
The lid member has a first concave portion formed on the surface on the base member side, and a first convex portion formed on the surface opposite to the base member side,
The first concave portion is configured to be fittable with the first convex portion provided on the other lid member,
A foldable container , wherein the first convex portion is configured to be able to fit into the first concave portion provided in the other lid member .

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