JP2019069785A - Foldable container - Google Patents

Abstract

To provide a foldable container which enables more smoothly carrying task using a forklift.SOLUTION: Bottom wall 2 of a foldable container 1, when the foldable container 1 in an assembled state is stacked, has stack fittings 26 inserted to inside of container 1 on the underside, and bottom wall slots 24 opened downward in which forks 54 of a forklift 51 are inserted from the side of container. On the long side walls 6 of the foldable container 1, side wall slots 31 open at the top edge of the side wall penetrate through the width direction. When the foldable container 1 in an assembled state are stacked, the side wall slots 31 of the foldable container 1 on the underside and the bottom wall slots 24 of the foldable container 1 on the upper side are communicated with each other in the inner and outer circumferential direction of the foldable container 1. Outer edges of bottom wall slots 24 and side wall slots 31 are slopes 32 sloping toward the outer edges of container 1 so that openings of the bottom wall slots 24 or the side wall slots 31 are enlarged.SELECTED DRAWING: Figure 4

Description

  BACKGROUND OF THE INVENTION Field of the Invention The present invention relates to a folding container used for carrying articles and the like.

  Heretofore, a bottom wall having a substantially rectangular shape, and a bottom wall forming portion having a base portion projecting upward along each side of the bottom wall, and the base portion pivoting relative to each base portion A foldable container is known which is constructed in an upwardly open box form with possibly connected side walls and in which each side wall can be folded above the bottom wall.

  In addition, there is a technique in which a handle portion which is a handle when the operator lifts the folding container is provided in the bottom wall configuration portion (see, for example, Patent Document 1). When carrying a folding container containing relatively heavy articles by using the technique, for example, the hand on the side wall portion by lifting the folding container by putting a hand on the handle portion of the bottom wall configuration. As in the case of lifting and lifting, it is possible to eliminate the concern that the connecting portion between the side wall portion and the bottom wall structure portion may be damaged.

Patent No. 3958186 gazette

  By the way, in the case where a heavy item is stored in a folding container and transported, etc., the force is lighter than that which is interposed between the folding container and the worker and the worker directly holds and moves the folding container. There is a need for a smoother carrying operation and the like by using an assisting device such as an assisting device which can move the folding container.

  The present invention has been made to solve the above-described problems and the like, and it is an object of the present invention to provide a foldable container which can be carried out more smoothly by using an assisting means. is there.

  In the following, each means suitable for solving the above object and the like will be described by item. In addition, specific effects and the like are added to the corresponding means as needed.

Means 1. A bottom wall structure including a bottom wall having a substantially rectangular shape in a plan view, and a base portion protruding upward along each side of the bottom wall;
It is possible to pivotally displace between an upright position erected above each of the base portions and a laid position lying above the bottom wall corresponding to each side of the bottom wall forming portion In a folding container comprising an attached side wall,
The bottom wall forming portion is located on the inner peripheral side of the side wall portion of the lower side folding container when stacking the folding containers in the assembled state in which all the side wall portions are in the upright position. Equipped with stacked mating parts to be inserted,
The bottom wall forming portion is provided with a bottom wall insertion portion which opens downward at least in the height range of the stacked fitting portion and can insert the support portion of the assisting means from the side.
The side wall portion extending in a direction intersecting with the insertion direction of the support portion of the assisting means inserted into the bottom wall insertion portion in the side wall portion is upward when the side wall portion is in the upright position A side wall insertion portion which is open in the wall and which penetrates in the thickness direction of the side wall portion,
When stacking the folding containers in the assembled state, the side wall insertion portion of the lower folding container and the bottom wall insertion portion of the upper folding container are aligned, and in the inner and outer peripheral directions of the folding container The side wall insertion portion and the bottom wall insertion portion communicate with each other;
The bottom wall insertion portion and a peripheral edge portion of the side wall insertion portion are inclined toward the outer peripheral side of the folding container in a direction to widen the opening area of the bottom wall insertion portion or the side wall insertion portion Folding container characterized by being.

  According to the means 1, since the bottom wall insertion portion is provided in the bottom wall construction portion, the support portion of the assisting means is provided from the side of the folding container via the bottom wall insertion portion to the lower surface of the bottom wall construction portion After inserting into the side and lifting up the folding container using the assisting means or keeping the folding container transported by using the assisting means grounded to the installation surface, the support of the assisting means is maintained while the grounding state is maintained. The part can be extracted from the bottom wall insertion part. Therefore, it is not necessary for the worker to lift the folding container directly when placing or lowering the folding container on the support portion of the assisting means, and the folding container can be made smoother by using the assisting means. It can be carried. As a result, the transport operability of the folded container can be improved, and the convenience can be improved.

  In addition, in a state in which the folding containers in the assembled state are stacked, the stacking fitting portion of the bottom wall configuration of the upper folding container is inserted into the inner peripheral side of the side wall of the lower folding container. For this reason, the bottom wall insertion portion provided in the stacked fitting portion of the bottom wall configuration of the upper folding container is accommodated inside the lower folding container.

  In this respect, according to the means 1, the side wall insertion portion is provided in the side wall portion, and in the stacked state of the folding container in the assembled state, the bottom wall inserting portion of the upper folding container is It can be exposed to the outside of the folding container via the side wall insert. Therefore, when the upper side folding container is removed (stacked) from the stacking step among the folding containers in the stacked state, the upper folding is performed via the side wall insertion portion of the lower folding container. The support portion of the assisting means can be inserted into the bottom wall insertion portion of the container. Furthermore, when stacking folded containers in the assembled state, the upper folding container is stacked on the upper side of the lower folding container, and the supporting means is supported while maintaining the stacked state. The part can be withdrawn from the bottom wall insert of the upper folding container. As a result, it is possible to smoothly carry out the stacking operation and stacking operation of the folding containers using the assisting means, and to further improve the transportation operability and the convenience. it can.

  Further, according to the means 1, the peripheral portions of the bottom wall insertion portion and the side wall insertion portion are inclined in the direction to widen the opening area of the bottom wall insertion portion or the side wall insertion portion toward the outer peripheral side of the folding container. It is considered to be an inclined part. For this reason, when inserting the support portion of the assisting means into the bottom wall insertion portion, even if the support portion contacts the bottom wall insertion portion and the peripheral portion of the side wall insertion portion, the tip of the support portion is inserted into the bottom wall It will be guided to the side inserted in the part and the side wall insertion part. Therefore, the workability of inserting the support portion of the assisting means into the bottom wall insertion portion can be improved, and the bottom of the bottom portion of the support portion comes into contact with the peripheral portion of the bottom wall insertion portion and the side wall insertion portion. The stress acting on the peripheral portion of the wall insertion portion and the side wall insertion portion can be reduced, and damage or the like of the peripheral portion of the bottom wall insertion portion and the side wall insertion portion can be suppressed.

  The term "helping means" means an intermediary device which is interposed between the folding container and the worker and allows the folding container to be moved by a lighter force than the worker directly holds and moves the folding container. Not only that, but also (substantially) a robot that performs work autonomously (a robot arm constitutes a support unit) and the like is included.

  The upper edge portion of the bottom wall insertion portion may be located above the upper edge portion of the stacked fitting portion. That is, in the case where the bottom wall insertion portion is provided to the upper position above the stacking fitting portion, the portion of the bottom wall insertion portion located above the stacking stacking portion is folded in an assembled state. Since the container is not inserted inside the lower folding container in the stacked state of the container, it is exposed to the outside of the folding container. For this reason, the insertion length to the lower side of the bottom wall insertion part of the bottom wall insertion part of the upper side folding container is made as much as possible in the stacking state of the folding container of an assembly state, fully securing width of the bottom wall insertion part sufficiently It can be shortened. Therefore, for example, the side wall insertion portion of the lower folding container may be configured to expose the entire portion of the bottom wall insertion portion of the upper folding container formed in the stacked fitting portion to the outside of the folding container. The vertical width of the side wall insertion part of the lower side folding container can be shortened as much as possible. As a result, by providing a relatively large side wall insertion portion in the side wall portion, it is possible to suppress a situation such as a reduction in the strength of the side wall portion or a reduction in the effective internal volume in a stacked state of folded containers in an assembled state. can do.

Means 2. The lateral width of the side wall insert is configured to be wider than the lateral width of the bottom wall insert,
When stacking the folded containers in the assembled state, at least the stacked fitting portion is included among the inclined portions provided corresponding to both sides of the bottom wall insertion portion of the upper folded container. The folding container according to the means 1 is characterized in that the portion is located on the side of the widthwise central portion of the side wall insertion portion with respect to both side portions of the side wall insertion portion of the lower side folding container.

  According to the means 2, in the stacked state of the folded containers in the assembled state, both sides of the side wall insertion portion of the lower folded container (corresponding to the inclined portion and the like) are the bottoms of the upper folded containers. It is located further to the side than the inclined part provided corresponding to the both sides of the wall insertion part. For this reason, when inserting the support portion of the assisting means into the bottom wall insertion portion of the upper folding container in the stacked state of the folding container in the assembled state, the support portion of the assisting means is the side wall of the lower folding container It is possible to suppress a situation in which the both sides of the insertion portion come in contact with each other. Furthermore, when the support portion of the assisting means is inserted into the bottom wall insertion portion of the upper folding container, even if the support portion of the assisting means is displaced relative to the bottom wall insertion portion in a horizontal direction, the support of the assisting means It is possible to avoid the situation where the part abuts on the side of the side wall insertion part. Therefore, it is possible to suppress damage or the like of the peripheral portion of the side wall insertion portion which can not secure strength more than the peripheral portion of the bottom wall insertion portion.

  In addition, in the stacked state of the folded container in the assembled state, the upper side is provided on the back side (inner peripheral side of the folded container) of the inclined portion provided corresponding to the side of the side wall insertion portion of the lower folded container. The bottom wall insertion part and the general part in which the inclination part is not provided among the stacking fitting parts of a folding container are arrange | positioned in contact or proximity | contact. For this reason, when inserting the support portion of the assisting means into the bottom wall insertion portion of the upper folding container in the stacked state of the folding container in the assembled state, it corresponds to the side of the side wall insertion portion of the lower folding container Even if it contacts the inclined part provided, the said inclined part will contact | abut and be supported by the said general part of the stacking fitting part of the upper folding container. Therefore, damage or the like of the inclined portion provided corresponding to the side portion of the side wall insertion portion can be more reliably prevented.

Means 3. The side wall portion includes a pair of opposing first side wall portions and a pair of opposing second side wall portions.
When the assembled state is to be in the folded state in which all the side wall portions are in the lying position, the pair of first side wall portions is in the lying position, and then the pair of second side wall portions is formed. In a configuration that can be displaced to the lying position,
The side wall insertion portion is provided in the first side wall portion,
The folding container according to the means 1 or 2, wherein the bottom wall insertion portion is provided corresponding to the side of the bottom wall forming portion to which the first side wall portion is attached.

  When the folded container in the assembled state is in the folded state, in the configuration in which the pair of second side walls are displaced to the lying position after setting the pair of first side walls to the lying position, the rotation axis of the first side wall A base portion (second base portion) rotatably supporting the second side wall portion so as to support the first side wall portion rotatably so as to position the second side wall portion below the rotation axis of the second side wall portion It is configured higher than the section (first base section).

  Also, in general, the folded containers configured to be stacked in the assembled state are configured to be able to stack the folded containers together even in the folded state. Then, when stacking the folded containers in the folded state, the stacked fitting portion of the bottom wall configuration of the upper folded container is inserted between the pair of second foundations of the lower folded container. And the upper side of the second base of the lower foldable container and the portion of the bottom wall configuration of the upper foldable container which is on the outer peripheral side of the stacked fitting portion vertically contact (or approach) It is supposed to

  By the way, for example, in the case of adopting a configuration in which the bottom wall insertion portion is provided corresponding to the second base portion (the side portion of the bottom wall forming portion provided), when stacking the folded containers in the folded state In the bottom wall insertion portion of the bottom wall configuration of the upper foldable container, a portion corresponding to the height range of the stacked fitting portion is covered by the second base portion of the lower foldable container (hidden) ), And there is a risk that it is not possible to secure a gap (height) in which the support portion of the assisting means can be inserted at the bottom wall insertion portion. In addition, when providing a recessed part like a side wall insertion part in a 2nd base part, there exists a possibility that the bearing part which supports the axial part of a 2nd side wall part may not be provided suitably.

  In this respect, according to the means 3, the bottom wall insertion portion is provided corresponding to the side portion of the bottom wall constituting portion (corresponding to the first base portion) to which the first side wall portion is attached. That is, the first base portion is configured lower than the second base portion, and the bottom wall insertion portion of the upper folding container is the lower side of the lower folding container even if the folding containers in the folded state are stacked in layers The situation where the first base part is covered is avoided. Therefore, in the stacked state of the folded containers in the folded state, a gap (a bottom wall insertion portion) in which the support portion of the assisting means can be inserted is reliably ensured between the upper folded container and the lower folded container. can do. As a result, assisting means can be used even in the stacking operation of the folding container in the folded state and the step disassembly operation, and the improvement of the workability can be achieved.

  Means 4. At a peripheral edge portion of the side wall insertion portion, an inclined plate portion which constitutes the inclined portion as a surface, and a reinforcing rib provided on the back surface side of the inclined plate portion are provided. The folding container in any one of 3.

  According to the means 4, it is possible to increase the strength of the sloped portion of the side wall portion which can not secure the strength more than the sloped portion of the bottom wall forming portion, and to prevent damage to the sloped portion. In addition, compared to the case where the reinforcing rib is exposed and provided on the surface side of the inclined portion of the side wall portion, that is, the outer surface side of the side wall portion (in the case where the inclined plate portion is omitted), the support portion of the assisting means Can be prevented from being caught on the inclined portion, and dust and the like can be easily accumulated between the reinforcing ribs (in particular, with respect to the inclined portion facing upward and corresponding to the lower edge portion of the side wall insertion portion) It is possible to avoid situations such as

Means 5. The side wall portion includes a pair of opposing first side wall portions and a pair of opposing second side wall portions.
The first side wall portion is provided with the side wall insertion portion, and on the outer surface side, it is possible to connect between the first side wall portion in the standing position and the second side wall portion in the standing position. There is provided a lock installation portion on which the lock means is installed,
The lock installation portion is provided with a lock protection portion which covers the outer surface side of the lock means at least at a lower position of a part of the side wall insertion portion. Folding container.

  According to the means 5, it is possible to suppress the situation where the support portion of the assisting means comes in contact with the locking means and the locking means is damaged etc. when the work such as the step dispersion is carried out.

It is a perspective view of a folding container in an assembled state. It is a perspective view of a folding container in a folded state. It is a perspective view which shows the lower surface side of the folding container in an assembly state. It is a perspective view which shows the state which piled up the folding container in an assembly state. It is a side view which shows the state which piled up the folding container in an assembly state. FIG. 12 is a partially enlarged perspective view including a partial cross section showing the positional relationship and the like between the side wall insertion portion of the lower folding container and the bottom wall inserting portion of the upper folding container in a state in which the folding containers in the assembled state are stacked . It is a perspective view which shows the state which piled up the folding container in a folding state. It is a side view which shows the state which piled up the folding container in a folding state. It is a perspective view showing a folding container and an assistant device. It is a perspective view showing a folding container held by assistant device.

  Hereinafter, an embodiment will be described with reference to the drawings. As shown in FIG. 1 and FIG. 2 etc., the folding container 1 protrudes upward from the bottom wall 3 along the long sides of the bottom wall 3 and the bottom wall 3 having a substantially rectangular shape in plan view, respectively. Bottom wall forming portion 2 having long side base portions 4 and short side base portions 5 projecting upward from bottom wall 3 along the respective short sides of bottom wall 3 . Furthermore, the foldable container 1 is rotatably attached to the long side wall 6 and the short side base 5 which are rotatably attached to the long side base 4 and the short side base 5, respectively. And a short side wall 7. The bottom wall structure 2, the long side wall 6, and the short side wall 7 of the present embodiment are made of polypropylene.

  The long side wall 6 and the short side wall 7 are erected above the long side base 4 and the short side base 5, respectively, and the upper side of the bottom wall 3 It is configured to be pivotally displaceable between a lying position to be laid down and a lying position. Further, the projection length of the long side base portion 4 from the bottom wall portion 3 is shorter than the projection length of the short side base portion 5 from the bottom wall portion 3, and the long side wall portion 6 is pivoted. The formation position of the long side bearing portion 8 for possible support is also located below the formation position of the short side bearing portion 9 for rotatably supporting the short side wall portion 7 ( 2 and 6). Furthermore, the lateral width of the short side wall 7 is configured to be substantially the same as the lateral width of the bottom wall component 2, and the lateral width of the long side sidewall 6 is the distance between the pair of short side base portions 5. It is configured almost the same.

  For this reason, in the present embodiment, the folded container 1 in the assembled state in which all the long side wall portions 6 and the short side wall portions 7 are in the erected position is all the long side wall portions 6 and When the short side wall 7 is in the folded position, the pair of long side walls 6 is first displaced to the lying position, and then the short side wall 7 is folded. It is configured to be displaced. Then, when the folding container 1 is in the folded state, the long side wall 6 positioned at the lying position overlaps the upper side of the bottom wall 3 and the short side wall 7 positioned at the lying position is long. It overlaps with the upper side of the side side wall 6. In the present embodiment, the long side wall 6 corresponds to a first side wall, and the short side wall 7 corresponds to a second side wall.

  In addition, as shown in FIGS. 2 and 6, the long side bearing 6 projects downward from the lower side of the long side sidewall 6 to the long side bearing 8 of the long base 4. A long side hinge portion 11 rotatably connected is provided. Furthermore, in the short side wall 7, the short side protrudes downward from the lower side of the short side wall 7, and is rotatably connected to the short side bearing 9 of the short side base 5. A side hinge 12 is provided.

  Further, as shown in FIG. 1 and FIG. 5 and the like, on both sides of the outer surface of the long side wall portion 6, an insertion protrusion 13 which protrudes outward is provided. On the other hand, while the locking wall 14 which protrudes inward from the both sides of an inner surface is provided in the short-side side wall part 7, when the folding container 1 is made into the assembled state in this locking wall 14, The insertion hole 15 into which the insertion protrusion 13 of the long side wall 6 is inserted is provided. With this configuration, the tilting displacement of the long side wall 6 to the outside and the tilting displacement to the inside and the outside of the short side wall 7 are prevented, and the long side sidewall 6 and the short side are short. Positional deviation in the vertical direction between the side wall portions 7 is prevented.

  Furthermore, on the outer surface side of the long side wall 6, a lock mechanism 16 as a locking means capable of connecting between the long side wall 6 in the standing position and the short side wall 7 in the standing position. The lock installation part 17 in which is installed is provided. The lock mechanism 16 includes a pair of left and right slide pieces 18 provided on both sides of the long side wall 6 at each side of the long side wall 6, and the folding container 1 is assembled. In this case, the front end of the slide piece 18 is inserted into a locking recess (not shown) provided on the inner surface side of the short side wall 7 (the lock mechanism 16 is brought into a locked state). ing. When the lock mechanism 16 is in the locked state, the long side sidewall 6 in the upright position and the short sidewall in the upright position are prevented, such as tilting displacement of the long sidewall 6 to the inside is prevented. The relative displacement with the part 7 is prevented. In addition, the lock mechanism 16 includes the operation unit 19 which can be operated by the operator, and by performing a predetermined operation of the operation unit 19, the lock mechanism 16 is displaced to a position where both the left and right slide pieces 18 slip out of the locking recess. (The lock mechanism 16 is in the unlocked state).

  In addition, as shown in FIG. 1 and FIG. 2 etc., when the folding container 1 is folded at the upper side of each long side base 4 of the bottom wall forming part 2, the short side located in the lying position A locking insertion portion 20 is provided to allow the locking wall 14 of the side wall 7 to be inserted. According to the configuration, when the folded container 1 is in the folded state, the inner surface of the short side wall 7 can be brought into contact with the upper side of the long side base 4, and the short side wall in the lying position A horizontal displacement of 7 is to be prevented. The short side base portion 5 protrudes upward beyond the short side wall 7 located at the lying position.

  By the way, as shown in FIGS. 9 and 10, the folding container 1 of this embodiment is interposed between the folding container 1 and the worker, rather than the worker directly holds and moves the folding container 1. It is configured to be transportable using an assisting device 51 as an assisting means that enables the folding container 1 to be moved by light force. As the assisting device 51 of the present embodiment, the holding portion 52 capable of holding the folding container 1 and the holding portion 52 can be supported at an arbitrary position, and the vertical direction of the holding portion 52 by the operator, and And a main body 53 that permits displacement operation in the horizontal direction (supports the holding portion 52 even during the displacement operation and supports the holding portion 52 at the position at the end of the displacement operation). The holding portion 52 of the present embodiment is provided with a pair of left and right claw portions 54 as a support portion. The holding portion 52 of the assisting device 51 basically abuts only on the bottom wall constituting portion 2 of the folding container 1 in a state where the folding container 1 is held (lifted), and the long side wall portion 6 and the like It is configured not to touch. Although not shown, the main body 53 includes an actuator using a motor, an air cylinder, and the like, a link mechanism, and the like.

  On the other hand, as shown in FIG. 3, the bottom wall portion 3 of the bottom wall forming portion 2 of the present embodiment has a bottom plate portion 21 having a substantially rectangular plate shape and a grid shape projecting downward from the entire lower surface of the bottom plate portion 21. And the support rib 22 of FIG. Furthermore, the bottom wall configuration portion 2 of the present embodiment protrudes downward from the bottom wall portion 3 in such a manner as to partially extend the support rib 22 of the bottom wall portion 3, and extends along the short side direction of the bottom wall portion 3. And three legs 23 extending in a vertical direction. Legs 23 (hereinafter also referred to as "side legs 23a") provided on both sides in the longitudinal width direction of the bottom wall 3 and legs 23 provided in the longitudinal width direction central portion of the bottom wall 3 ( Hereinafter, a pair of left and right pairs that opens downward and in the widthwise direction of the bottom wall 3 between the "central leg 23b" and the like and can insert the pair of claws 54 of the assisting device 51 Bottom wall insert 24 is provided (see FIG. 9). Then, as shown in FIG. 10, after the claw portion 54 of the assisting device 51 is inserted into the bottom wall insertion portion 24 from the side of the folding container 1, the claw portion 54 is raised to thereby lower the bottom by the upper surface of the claw portion 54. The bottom wall structure 2 is lifted by supporting the lower surface of the bottom wall 3 (support rib 22) of the wall structure 2.

  Further, as shown in FIG. 3, in each leg portion 23 of the present embodiment, the folding containers 1 in an assembled state are shown in FIGS. 4 and 5 at portions corresponding to the outer peripheral edge of the bottom wall portion 3. When stacking (stacking) on top of each other, the long side wall 6 of the lower folding container 1 and the stacked support 25 supported in contact with the upper side of the short side wall 7 are provided. It is done. As shown in FIG. 5 and the like, the lower surface of the stacked support portion 25 extends in a substantially horizontal direction, and the height position of the lower surface of the stacked support portion 25 is positioned above the lower surface of the leg portion 23 and It is located below rather than the undersurface of bottom wall 3 (supporting rib 22). According to this configuration, in the stacked state of the folded containers 1 in the assembled state, a portion below the stacked support 25 of the legs 23 of the bottom wall configuration 2 of the upper folded container 1 (hereinafter referred to as “step A stack fitting portion 26 ′ ′ is inserted into the lower side of the lower folding container 1 (inner peripheral side of the long side wall 6 and the short side wall 7) (FIG. 6) reference).

  Further, as shown in FIG. 1, when the long side wall 6 is in the upright position, the long side wall 6 is opened upward, and the side wall is inserted through the thickness direction of the long side wall 6. A section 31 is provided. As shown in FIG. 4 to FIG. 6, when stacking the folding containers 1 in the assembled state, the side wall insertion portion 31 of the lower folding container 1 and the bottom wall insertion portion 24 of the upper folding container 1 are The side wall insertion portion 31 and the bottom wall insertion portion 24 communicate with each other in the inner and outer peripheral direction of the folding container 1 in alignment.

  Furthermore, as shown in FIGS. 4 to 6, the bottom wall insertion portion 24 and the peripheral edge portion of the side wall insertion portion 31 are directed toward the outer peripheral side of the folding container 1 to form the bottom wall insertion portion 24 or the side wall insertion portion. The inclined portion 32 is inclined in a direction to widen the opening area 31. Further, as shown in FIG. 1 etc., the inclined portion 32 (hereinafter also referred to as “side wall inclined portion 32 a”) of the long side wall portion 6 is configured by the inclined plate portion 33 for forming the inclined portion 32 by a surface. It is done. Furthermore, on the back surface side of the inclined plate portion 33, a reinforcing rib 34 is provided. On the other hand, as shown in FIG. 3 etc., the inclined portion 32 (hereinafter also referred to as "bottom wall inclined portion 32b") of the bottom wall forming portion 2 is a portion corresponding to the side edge portion of the bottom wall insertion portion 24. Is provided with the inclined plate portion 33 (a portion formed by chamfering the corner portion of the leg portion 23), but for the portion corresponding to the upper edge portion of the bottom wall insertion portion 24, the inclined plate There is nothing equivalent to the portion 33, and the reinforcing rib 34 (a portion formed by chamfering the outer periphery of the lower surface side of the support rib 22 of the bottom wall portion 3) is the outer side and the lower side of the folding container 1 It is supposed to be exposed to

  Further, as shown in FIGS. 5 and 6, the lateral width of the side wall insertion portion 31 is wider than the lateral width of the bottom wall insertion portion 24, and when the folding containers 1 in the assembled state are stacked, the upper folding is performed. Of the bottom wall inclined portions 32b provided corresponding to both sides of the bottom wall insertion portion 24 of the container 1, the portion included in the stacked fitting portion 26 (hereinafter referred to as "fitting corresponding portion 35") is It is located on the lateral width direction central portion side of the side wall insertion portion 31 with respect to both side portions of the side wall insertion portion 31 of the lower side folding container 1. In addition, the vertical width of the side wall inclined portion 32a provided corresponding to the lower edge of the side wall insertion portion 31 is higher than the vertical width of the bottom wall inclined portion 32b provided corresponding to the upper edge of the bottom wall insertion portion 24. Is also short.

  Furthermore, as shown in FIG. 5 and the like, the lock installation portion 17 provided on the outer surface side of the long side wall portion 6 is locked at a lower position of the side wall insertion portion 31 including the central portion in the width direction. A lock protector 36 is provided which covers the outer surface side of the slide piece 18 of the mechanism 16.

  Moreover, as shown to FIG. 7, FIG. 8, the folding container 1 of this embodiment is comprised so that folding containers 1 comrades can be stacked in layers also in a folding state. In the stacked state of the folded containers 1 in the folded state, the stacked fitting portion 26 of the upper folded container 1 is the pair of short side base portions 5 of the bottom wall constituting portion 2 of the lower folded container 1. A portion of the stacked supporting portion 25 of the upper side folding container 1 corresponding to the short side portion of the bottom wall forming portion 2 is inserted between the upper side of the upper side of the short side base portion 5 of the lower side folding container 1 It is supported in contact with the part.

  Furthermore, as shown in FIG. 3, in the stacking support portion 25, the side surfaces of the leg portion 23 project downward at portions corresponding to each corner portion of the bottom wall portion 3 and the central portion of the long side portion. The positioning convex part 37 connected with these is provided. The positioning convex portion 37 opens downward similarly to the bottom wall portion 3 and the leg portion 23, and a reinforcing rib is appropriately provided on the inner peripheral side. Further, as shown in FIG. 8, the lower end portion of the positioning convex portion 37 is at the same height position as the lower end portion of the leg portion 23.

  On the other hand, as shown in FIG. 2, the bottom wall of the positioning convex portion 37 of the upper folding container 1 in the stacked state of the folding containers 1 in the folded state on the upper side of the short side base portion 5 A folding positioning recess 38 is provided in which the positioning projection 37 corresponding to the short side of the portion 3 is inserted. Then, in the stacked state of the folding container 1 in the folded state, the positioning convex portion 37 of the upper folding container 1 is inserted into the positioning recess 38 at the time of folding of the lower folding container 1. Misalignment in the lateral direction is prevented.

  Further, as shown in FIG. 1, in the upper side of the long side wall 6 and the short side wall 7, in the stacked state of the folding container 1 in the assembled state, the positioning convex of the upper folding container An assembly positioning recess 39 is provided in which the portion 37 is inserted. Furthermore, as shown in FIG. 1 and FIG. 6 etc., the lower surface of the positioning projection 37 of the upper folding container 1 in the stacked state of the folding container 1 which protrudes upward from the bottom of the positioning recess 39 during assembly. A positioning projection 40 is provided which is inserted on the side. With this configuration, in the stacked state of the folding containers 1 in the assembled state, the relative position shift in the horizontal direction of the upper and lower folding containers 1 is prevented, and the bottom wall insertion portion 24 of the upper folding container 1 and the lower side The relative position of the folding container 1 to the side wall insertion portion 31 is more strictly defined.

  In addition, as shown in FIG. 3, the bottom wall is inserted on the lower surface side of the bottom wall 3 between the central leg 23b and each side leg 23a (upper edge of the bottom wall insertion portion 24). A non-slip member 41 is embedded so as to be able to abut on the claw portion 54 of the assisting device 51 inserted into the portion 24. Further, as shown in FIG. 1 and the like, in the range including the central portion of the side lower portion of the short side portion of the bottom wall configuration portion 2, the worker looks at the lower surface of the bottom wall configuration portion 2 from the side of the bottom wall configuration portion 2 A handle portion 42 is provided to allow a finger to be hung on the side.

  As described above in detail, according to the present embodiment, since the bottom wall insertion portion 24 is provided in the bottom wall configuration portion 2, the claw portion 54 of the assisting device 51 is bottomed from the side of the folding container 1. It is inserted on the lower surface side of the bottom wall configuration part 2 through the wall insertion part 24 and the folding container 1 is lifted using the assisting device 51 or the folding container 1 transported using the assisting device 51 is installed on the installation surface After being in a state of being grounded, the claw portion 54 of the assisting device 51 can be extracted from the bottom wall insertion portion 24 while maintaining the grounded state. Therefore, even when the folding container 1 is put on or off the hook portion 54 of the assisting device 51, the worker does not have to directly lift the folding container 1, and the folding is performed using the assisting device 51. The container 1 can be transported more smoothly. As a result, the transport workability of the folding container 1 can be improved, and the convenience can be improved.

  Further, in a state in which the folding containers 1 in the assembled state are stacked, the stacking fitting portion 26 of the bottom wall forming portion 2 of the upper folding container 1 is inserted inside the lower folding container 1. For this reason, the bottom wall insertion portion 24 provided in the stacked fitting portion 26 of the bottom wall configuration portion 2 of the upper foldable container 1 is accommodated inside the lower foldable container 1.

  In this respect, according to the present embodiment, the side wall insertion portion 31 is provided in the long side wall portion 6, and the bottom wall insertion portion of the upper folding container 1 in the stacked state of the folding containers 1 in the assembled state. 24 can be exposed to the outside of the folding container 1 through the side wall insertion portion 31 of the lower folding container 1. Therefore, when the upper folding container 1 is removed (stacked) from the stacking step of the assembled folding containers 1 in the stacked state, the side wall insertion portion 31 of the lower folding container 1 is used. The claw portion 54 of the assisting device 51 can be inserted into the bottom wall insertion portion 24 of the upper folding container 1. Furthermore, in the case of stacking the folding containers 1 in the assembled state, the upper folding container 1 is stacked on the upper side of the lower folding container 1, and then the stacking condition is maintained to help The claws 54 of the device 51 can be withdrawn from the bottom wall insert 24 of the upper folding container 1. As a result, using the assisting device 51, the stacking operation of the folding container 1 and the stacking operation can be smoothly performed, thereby further improving the transportation operability and the convenience, etc. be able to.

  Further, in the present embodiment, the peripheral portions of the bottom wall insertion portion 24 and the side wall insertion portion 31 face the opening side of the bottom wall insertion portion 24 or the side wall insertion portion 31 toward the outer peripheral side of the folding container 1. The inclined portion 32 is inclined in the spreading direction. Therefore, even when the claw portion 54 contacts the bottom wall insertion portion 24 and the peripheral portion of the side wall insertion portion 31 when inserting the claw portion 54 of the assisting device 51 into the bottom wall insertion portion 24, the claw portion The tip end of 54 is guided to the side to be inserted into the bottom wall insertion portion 24 and the side wall insertion portion 31. Therefore, the workability of inserting the claw portion 54 of the assisting device 51 into the bottom wall insertion portion 24 is improved, and the tip of the claw portion 54 and the peripheral portion of the bottom wall insertion portion 24 and the side wall insertion portion 31 When it contacts, the stress which acts on the peripheral part of bottom wall insertion part 24 and side wall insertion part 31 can be reduced, and damage etc. of the peripheral part of bottom wall insertion part 24 and side wall insertion part 31 It can be suppressed.

  In addition, in the present embodiment, the upper edge portion of the bottom wall insertion portion 24 is located above the upper edge portion of the stacked fitting portion 26. That is, the portion of the bottom wall insertion portion 24 located above the stacking fitting portion 26 is not inserted inside the lower folding container 1 in the stacking state of the folding container 1 in the assembled state. , (With or without the side wall insertion portion 31) exposed to the outside of the folding container 1. For this reason, while sufficiently securing the upper and lower widths of the bottom wall insertion portion 24 to the lower side folding container 1 of the bottom wall insertion portion 24 of the upper folding container 1 in the stacked state of the folding container 1 in the assembled state. Can be as short as possible. Therefore, for example, by the side wall insertion portion 31 of the lower side folding container 1, the entire part of the bottom wall insertion portion 24 of the upper side folding container 1 formed in the stacked fitting portion 26 is the outer side of the folding container 1 The vertical width of the side wall insertion portion 31 of the lower foldable container 1 can be shortened as much as possible even in the configuration in which it is exposed. As a result, the relatively large side wall insertion portion 31 is provided in the long side wall portion 6, so that the strength reduction of the long side wall portion 6 and the effective content in the stacked state of the folded container 1 in the assembled state It is possible to prevent a situation such as a reduction of product.

  As described above, by providing the side wall insertion portion 31, a portion of the bottom wall insertion portion 24 which is inserted inside the lower folding container 1 in the stacked state of the folding container 1 in the assembled state Also, it can be exposed to the outside of the folding container 1. Therefore, even if the vertical width of the portion of the bottom wall insertion portion 24 located above the lower folding container 1 in the stacked state of the folding containers 1 in the assembled state is made as short as possible, the bottom wall insertion portion 24 Can be inserted into the claw portion 54 of the assisting device 51. Accordingly, the vertical width of the leg portion 23 (of the portions positioned above the lower folding container 1 in the stacking state of the folding containers 1 in the assembled state) becomes long, so that the stacking container 1 is stacked. The height can be increased, and concerns such as a reduction in transport and storage efficiency can be eliminated.

  Further, the lateral width of the side wall insertion portion 31 is wider than the lateral width of the bottom wall insertion portion 24, and when stacking the folding containers 1 in the assembled state, both sides of the bottom wall insertion portion 24 of the upper folding container 1 The part (fitting corresponding part 35) included in the stacked fitting part 26 among the bottom wall inclined parts 32b provided corresponding to the parts is more than the both side parts of the side wall insertion part 31 of the lower folding container 1 The central portion of the side wall insertion portion 31 is located in the lateral width direction central portion side. For this reason, in the stacked state of the folding containers 1 in the assembled state, both side portions (side wall inclined portions 32a provided corresponding to the side wall insertion portions 31 of the lower folding container 1) are the upper folding containers 1 Of the bottom wall inclined portion 32b provided corresponding to both sides of the bottom wall insertion portion 24 of the first embodiment. Therefore, when the claw portion 54 of the assisting device 51 is inserted into the bottom wall insertion portion 24 of the upper folding container 1 in the stacked state of the folding container 1 in the assembled state, the claw portion 54 of the assisting device 51 is It is possible to prevent the situation in which the both side portions of the side wall insertion portion 31 of the lower side folding container 1 are in contact with each other. Furthermore, in a state where the claw portion 54 of the assisting device 51 is inserted into the bottom wall insertion portion 24 of the upper folding container 1, the claw portion 54 of the assisting device 51 is displaced relative to the bottom wall insertion portion 24 in the horizontal direction. Also, the situation in which the claws 54 of the assisting device 51 abut on the side of the side wall insertion portion 31 can be avoided. Therefore, it is possible to suppress damage or the like of the peripheral portion of the side wall insertion portion 31 which is less likely to secure strength than the peripheral portion of the bottom wall insertion portion 24.

  Further, as shown in FIG. 6, in the stacked state of the foldable container 1 in the assembled state, the back surface side of the side wall inclined portion 32a provided corresponding to the side portion of the side wall insertion portion 31 of the lower foldable container 1 (In the inner peripheral side of the folding container 1), a general part not provided with the bottom wall insertion portion 24 or the bottom wall inclined portion 32b of the stacked fitting portion 26 of the upper folding container 1 abuts, or , Placed in close proximity. Therefore, when the claw portion 54 of the assisting device 51 is inserted into the bottom wall insertion portion 24 of the upper folding container 1 in the stacked state of the folding container 1 in the assembled state, the side wall insertion of the lower folding container 1 Even if the side wall sloped portion 32a provided corresponding to the side portion of the portion 31 contacts, the side wall sloped portion 32a abuts on and supports the general portion of the stacked fitting portion 26 of the upper folding container 1 It will be done. Therefore, damage or the like of the side wall inclined portion 32 a provided corresponding to the side portion of the side wall insertion portion 31 can be more reliably prevented.

  Further, for example, when stacking the folding containers 1 in the folded state, the stacking fitting portion 26 of the upper folding container 1 is between the pair of short side base portions 5 of the lower folding container 1. Will be inserted into the Therefore, for example, when adopting a configuration in which the bottom wall insertion portion 24 is provided corresponding to the short side base portion 5 (the short side portion of the bottom wall configuration portion 2 provided thereon), it is in a folded state. When stacking the folding containers 1, a portion of the bottom wall insertion portion 24 of the upper folding container 1 corresponding to the height range of the stacking fitting portion 26 is the short side of the lower folding container 1 The base portion 5 is likely to be covered (hidden), and there is a possibility that the bottom wall insertion portion 24 can not secure a gap (height) in which the claw portion 54 of the assisting device 51 can be inserted. In addition, when providing a recessed part like the side wall insertion part 31 in the short side base part 5, there exists a possibility that the short side bearing part 9 may not be provided suitably.

  In this respect, in the present embodiment, the side wall insertion portion 31 is provided for the long side wall portion 6 which is first set to the lying position when the folded container 1 in the assembled state is folded, and the bottom wall component A bottom wall insertion portion 24 is provided corresponding to the long side portion 2 (so as to be opened laterally at the lower position of the long side base portion 4). That is, the long-side base portion 4 is configured to be lower than the short-side base portion 5, and the bottom wall insertion portion 24 of the upper-side folded container 1 is used even when stacking the folded containers 1 in the folded state. The situation where the lower side folding container 1 is covered by the long side base 4 is avoided. Therefore, in the stacked state of the folded containers 1 in the folded state, a gap in which the claw portion 54 of the assisting device 51 can be inserted between the upper folded container 1 and the lower folded container 1 (bottom wall insertion portion 24) can be ensured. As a result, the assisting device 51 can be used also in the stacking operation of the folding container 1 in the folded state and the step disassembly operation, and the workability can be improved.

  In addition, on the peripheral edge portion of the side wall insertion portion 31, the inclined plate portion 33 which constitutes the side wall inclined portion 32a by a surface, and the reinforcing rib 34 provided on the back surface side of the inclined plate portion 33 are provided. Therefore, the strength of the side wall sloped portion 32a of the long side wall portion 6 which can not ensure the strength more than the bottom wall sloped portion 32b of the bottom wall forming portion 2 can be enhanced, and the damage and the like of the side wall sloped portion 32a are prevented. be able to. Further, compared to the case where the reinforcing rib 34 is provided exposed on the surface side of the side wall inclined portion 32a, that is, the outer surface side of the long side wall portion 6 (in the case where the inclined plate portion 33 is omitted), While preventing the tip end of the claw portion 54 of the assisting device 51 from being caught by the side wall inclined portion 32a (especially, the side wall inclined portion 32a corresponding to the lower edge of the side wall insertion portion 31 and facing upward) ) Can be prevented from being easily accumulated between the reinforcing ribs 34.

  Further, the lock installation portion 17 provided on the outer surface side of the long side wall portion 6 is an outer surface of the lock mechanism 16 (slide piece 18) at a lower position of the side wall insertion portion 31 including the central portion in the horizontal width direction. A lock protector 36 covering the side is provided. Therefore, it is possible to suppress the situation where the claw portion 54 of the assisting device 51 comes into contact with the lock mechanism 16 and the lock mechanism 16 is damaged or the like when the stepped container etc. of the folding container 1 is worked.

  In addition, it is not limited to the description content of the said embodiment, For example, you may implement as follows. Of course, other applications and modifications not illustrated below are naturally possible.

  (A) The bottom wall insertion portion 24 of the above embodiment is provided above the stacked fitting portion 26, but at least the range of the height of the stacked fitting portion 26 of the bottom wall configuration portion 2 It should just be comprised so that it may be provided. For example, the upper edge portion of the bottom wall insertion portion 24 (excluding the bottom wall inclined portion 32b) and the upper edge portion of the stacked fitting portion 26 (stacked support portion 25) are configured to be at the same height position. You may However, if the vertical width of the stacked fitting portion 26, that is, the insertion length of the bottom wall insertion portion 24 to be inserted into the lower folding container 1 in the stacked state becomes long, the bottom wall insertion portion If it is attempted to expose the entire portion 24 to the outside of the folding container 1, the vertical width of the side wall insertion portion 31 also becomes long, which may cause a decrease in the strength of the long side wall portion 6 or the like. Therefore, the stacking support portion 25 is positioned lower than the upper edge portion (the lower surface of the bottom wall portion 3 and the upper end portion of the leg portion 23) of the bottom wall insertion portion 24 to stack the folded containers 1 in the assembled state. In the lower folding container 1 of the upper folding container 1 by extending the bottom wall inserting portion 24 of the upper folding container 1 to a position higher than the lower folding container 1. The claw portion 54 of the assisting device 51 can be reliably inserted into the bottom wall insertion portion 24 of the upper folding container 1 even if the insertion length of the side wall insertion portion 31 and the vertical width of the side wall insertion portion 31 are relatively short. .

  (B) In the above embodiment, the side wall insertion portion 31 is provided in the long side wall portion 6, and the bottom wall insertion portion 24 is provided so as to open at the long side portion of the bottom wall configuration portion 2. Instead of or in addition to such a configuration, a side wall insertion portion 31 is provided in the short side wall portion 7, and a bottom wall insertion portion 24 is provided so as to open at the short side portion of the bottom wall configuration portion 2. It may be Further, in the above embodiment, when the folded container 1 in the assembled state is brought into the folded state, the long side wall 6 is set to the lying position first, and then the short side wall 7 is set to the lying position. However, the short side wall 7 may be first placed at the lying position.

  (C) In the above embodiment, although the assisting device 51 is used as the assisting means, for example, a robot that performs (almost) autonomous work (a robot arm constitutes a support portion) may be used. You may use a forklift. Moreover, the holding | maintenance part 52 of the assistance apparatus 51 is changeable according to the magnitude | size, the shape, etc. of the folding container 1 made into objects, such as conveyance.

  (D) Although the folding container 1 in the above embodiment is made of polypropylene, it may be made of other resin materials such as polyethylene, PET, polyamide and the like.

  DESCRIPTION OF SYMBOLS 1 ... folding container, 2 ... bottom wall structure part, 3 ... bottom wall part, 4 ... long side base part, 5 ... short side base part, 6 ... long side side wall part, 7 ... short side side wall part, DESCRIPTION OF SYMBOLS 16 ... Lock mechanism, 17 ... Lock installation part, 23 ... Leg part, 24 ... Bottom wall insertion part, 26 ... Stacking fitting part, 31 ... Side wall insertion part, 32 ... Slope part, 33 ... Sloped plate part, 34 ... Reinforcement rib, 36: lock protection part, 51: assisting device, 54: claw part.

Claims (3)

A bottom wall structure including a bottom wall having a substantially rectangular shape in a plan view, and a base portion protruding upward along each side of the bottom wall;
It is possible to pivotally displace between an upright position erected above each of the base portions and a laid position lying above the bottom wall corresponding to each side of the bottom wall forming portion In a folding container comprising an attached side wall,
The bottom wall forming portion is located on the inner peripheral side of the side wall portion of the lower side folding container when stacking the folding containers in the assembled state in which all the side wall portions are in the upright position. Equipped with stacked mating parts to be inserted,
The bottom wall forming portion is provided with a bottom wall insertion portion which opens downward at least in the height range of the stacked fitting portion and can insert the support portion of the assisting means from the side.
The side wall portion extending in a direction intersecting with the insertion direction of the support portion of the assisting means inserted into the bottom wall insertion portion in the side wall portion is upward when the side wall portion is in the upright position A side wall insertion portion which is open in the wall and which penetrates in the thickness direction of the side wall portion,
When stacking the folding containers in the assembled state, the side wall insertion portion of the lower folding container and the bottom wall insertion portion of the upper folding container are aligned, and in the inner and outer peripheral directions of the folding container The side wall insertion portion and the bottom wall insertion portion communicate with each other;
The bottom wall insertion portion and a peripheral edge portion of the side wall insertion portion are inclined toward the outer peripheral side of the folding container in a direction to widen the opening area of the bottom wall insertion portion or the side wall insertion portion Folding container characterized by being. The lateral width of the side wall insert is configured to be wider than the lateral width of the bottom wall insert,
When stacking the folded containers in the assembled state, at least the stacked fitting portion is included among the inclined portions provided corresponding to both sides of the bottom wall insertion portion of the upper folded container. The folding container according to claim 1, wherein the portion is located on the side of the widthwise central part of the side wall insertion part with respect to both side parts of the side wall insertion part of the lower side folding container. The side wall portion includes a pair of opposing first side wall portions and a pair of opposing second side wall portions.
When the assembled state is to be in the folded state in which all the side wall portions are in the lying position, the pair of first side wall portions is in the lying position, and then the pair of second side wall portions is formed. In a configuration that can be displaced to the lying position,
The side wall insertion portion is provided in the first side wall portion,
The foldable container according to claim 1 or 2, wherein the bottom wall insertion portion is provided corresponding to the side portion of the bottom wall forming portion to which the first side wall portion is attached.

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