JP7062251B2 - Folding container - Google Patents

Description

The present invention relates to a folding container whose inside is partitioned by a partition plate.

As a conventional container, a pair of engaging ridges extending vertically are provided on the inner side surfaces of a pair of facing portions, and the side portion of the partition plate is engaged with the engaging groove between the engaging ridges. Is known (see, for example, Patent Document 1).

Jikkai Akira 48-057425 (Fig. 1)

However, in the above structure, there may be a problem that the engaging ridge bites into the luggage and deforms the luggage.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a folding container that can partition the inside into a plurality of areas and has a small load on luggage.

The invention of claim 1 made in order to achieve the above object is provided with a pair of first side walls and a pair of second side walls arranged to face each other between the bottom wall and the upper frame. The pair of first side walls can be folded by hingely connecting the upper end portion to the upper frame, while the pair of second side walls hinge the upper end portion and the lower end portion to the upper frame and the bottom wall. In a foldable container that is connected and has an intermediate hinge portion in the middle portion in the vertical direction and can be folded in half, it is arranged between the pair of second side walls, and the middle of the second side walls. A partition plate that is abutted against both the upper second side wall above the hinge portion and the lower second side wall below the hinge portion to partition the pair of first side walls into a plurality of areas, and the upper second side wall. Alternatively, the lower second side wall is provided with an engaged portion in which at least one part of the lower second side wall is bulged outward and an engaging protrusion projecting from the partition plate is unevenly engaged with the engaging portion. The engaged portion is accommodated in a space formed between the upper second side wall and the lower second side wall by folding the two side walls, and the outer surface of the upper second side wall or the lower second side wall is provided. A pair of side protrusions protrude from both side protrusions of the above, and a part of the main plate portion of the upper second side wall or the lower second side wall located between the pair of side protrusions is bulged. The engaged portion is formed, and the amount of protrusion of the engaged portion from the main plate portion is smaller than the amount of protrusion of the side protrusion from the main plate portion of the folding container.

The invention of claim 2 comprises a pair of first side walls and a pair of second side walls arranged so as to face each other between the bottom wall and the upper frame, and the pair of first side walls is provided with an upper end portion. Is hinged to the upper frame and foldable, while the pair of second side walls is hinged to the upper frame and the bottom wall at the upper end and the lower end and is an intermediate portion in the vertical direction. In a foldable container that has an intermediate hinge portion and can be folded in half, it is arranged between the pair of second side walls, and the upper second side wall of the second side wall is above the intermediate hinge portion. A partition plate that is abutted against both the lower second side wall and the lower second side wall to partition the pair of first side walls into a plurality of regions, and at least the upper second side wall or the lower second side wall. One part thereof is bulged outward, and the engaging portion is provided with an engaged portion in which an engaging protrusion protruding from the partition plate engages in an uneven manner, and the second side wall is folded to form the upper side. The engaged portion is accommodated in a space formed between the two side walls and the lower second side wall, and the engaged portion is provided on both the upper second side wall and the lower second side wall. When the second side wall is folded, the upper and lower engaged portions face each other with a gap .

According to the third aspect of the present invention , a pair of first side walls and a pair of second side walls are arranged to face each other between the bottom wall and the upper frame, and the pair of first side walls is provided with an upper end portion. The pair of second side walls can be folded by being hinged to the upper frame, while the upper end and the lower end are hinged to the upper frame and the bottom wall and an intermediate portion in the vertical direction. In a foldable container that has an intermediate hinge portion and can be folded in half, it is arranged between the pair of second side walls, and the upper second side wall of the second side wall is above the intermediate hinge portion. A partition plate that is abutted against both the lower second side wall and the lower second side wall to partition the pair of first side walls into a plurality of regions, and at least the upper second side wall or the lower second side wall. The engaging portion is provided with an engaged portion that is formed through or recessed on one side and the engaging protrusions protruding from the partition plate engage with each other in an uneven manner, and the engaging protrusions and the engaged portions are provided with the engaged portions. The partition plate is engaged at a depth that cannot be engaged and disengaged unless it is curved and deformed in the lateral direction, and a pair from both side edges of the outer surface of the upper second side wall or the lower second side wall. The side protrusions are projected, and a part of the main plate portion of the upper second side wall or the lower second side wall located between the pair of side protrusions is bulged to form the engaged portion. The amount of protrusion of the engaged portion from the main plate portion is smaller than the amount of protrusion of the side protrusion from the main plate portion of the folding container.

The invention of claim 4 comprises a pair of first side walls and a pair of second side walls arranged so as to face each other between the bottom wall and the upper frame, and the pair of first side walls is provided with an upper end portion. Is hinged to the upper frame and foldable, while the pair of second side walls is hinged to the upper frame and the bottom wall at the upper end and the lower end and is an intermediate portion in the vertical direction. In a foldable container that has an intermediate hinge portion and can be folded in half, it is arranged between the pair of second side walls, and the upper second side wall of the second side wall is above the intermediate hinge portion. A partition plate that is abutted against both the lower second side wall and the lower second side wall to partition the pair of first side walls into a plurality of regions, and at least the upper second side wall or the lower second side wall. The engaging portion is provided with an engaged portion that is formed through or recessed on one side and the engaging protrusions protruding from the partition plate engage with each other in an uneven manner, and the engaging protrusions and the engaged portions are provided with the engaged portions. The partition plate is engaged at a depth that cannot be engaged and disengaged unless it is curved and deformed in the lateral direction, and the engaged portion is attached to both the upper second side wall and the lower second side wall. It is a folding container provided, and when the second side wall is folded, the upper and lower engaged portions face each other with a gap.

According to the fifth aspect of the present invention, the engaged portion is provided on both the upper second side wall and the lower second side wall, and the partition plate has a symmetrical shape in the left-right direction and the up-down direction. The folding container according to any one of claims 1 to 4.

In the folding container of claim 1, the engaged portion, which is the engaging partner of the engaging protrusion of the partition plate, is formed through or recessed in the upper second side wall or the lower second side wall. , The engaged portion does not bite into the luggage as in the conventional case, and the load on the luggage can be suppressed. Further, since the partition plate is arranged between the pair of the second side walls and is abutted against both the upper second side wall and the lower second side wall constituting each second side wall, the second side wall is folded in half. This is prevented and the assembled state of the folding container is strengthened.

Perspective view of a folding container according to an embodiment of the present invention. Side cross section of folding container Enlarged perspective view of the corners of the folding container Enlarged perspective view with a part of the corner of the folding container broken Enlarged perspective view of the second side wall Enlarged side sectional view of the intermediate hinge portion of the second side wall Perspective view of the partition plate Enlarged perspective view in which a part of the engaging part between the partition plate and the second side wall is broken. Perspective view of the state where the partition plate is received in the folding container Perspective view of a folding container with the partition plate removed Perspective view of a folding container in the middle of folding Perspective view of the folded container in the folded state Side sectional view of the folded container in the folded state Cross-sectional view showing the relationship between the second side wall and the partition plate emphasized.

Hereinafter, an embodiment of the present invention will be described with reference to FIGS. 1 to 14. As shown in FIG. 1, the folding container 10 of the present embodiment has a rectangular parallelepiped shape with a rectangular planar shape and an open upper surface, and the inside is partitioned by a partition plate 60. Further, in the folding container 10, a pair of first side walls 13 and 13 and a pair of second side walls 14 and 14 are assembled between the upper frame 12 and the bottom wall 11 provided at the upper end portion and the lower end portion. Moreover, the partition plate 60 is detachably attached between the pair of second side walls 14 and 14. Each component such as the upper frame 12 and the bottom wall 11 is, for example, a resin molded product. Hereinafter, each component will be described in detail.

The bottom wall 11 is provided with an outer edge protrusion 20 that rises from the entire outer edge portion. Further, a plurality of stopper protrusions 21S shown in FIG. 2, which are lower than the outer edge protrusion 20 and are provided near the outer edge of the long side portion of the bottom wall 11, are provided and arranged in parallel with the outer edge protrusion 20. Further, as shown in FIG. 10, a shaft engaging portion 21H is provided between the stopper protrusions 21S and 21S. Although the details of the shaft engaging portion 21H are not shown, the upper end portion of the protrusion rising from the bottom wall 11 is bent toward the outer edge protrusion 20 and is curved upward in a semicircular shape.

As shown in FIG. 11, at the center of the short side portion of the bottom wall 11, a position collision portion 11K is provided in which a part of the outer edge portion of the bottom wall 11 is projected upward in a rectangular parallelepiped shape. Further, a pair of locking protrusions 11M and 11M project substantially horizontally from the inner side surface of the outer edge protrusion 20 on both sides of the position determination portion 11K.

The back side of the position determination portion 11K is a belt receiving portion 11T that is recessed over the lower surface of the bottom wall 11 and the outer surface of the outer edge protrusion wall 20. Further, the belt receiving portion 11T is also formed at a position near both ends of the long side portion of the bottom wall 11. The belt receiving portion 11T is formed by chamfering a corner portion where the lower surface and the outer surface of the bottom wall 11 intersect. Further, as shown in FIG. 2, the lower surface of the bottom wall 11 is provided with a lower surface protrusion 11B in a portion inside the outer edge portion. Then, when the folding containers 10 are stacked, the lower surface protrusion 11B of the upper folding container 10 is fitted inside the upper frame 12 of the lower folding container 10.

The pair of long sides 24, 24 of the upper frame 12 have a square groove structure in which the lower surface is open. As shown in FIG. 2, the lower end portion of the inner strip member 24B constituting the inner side surface side of the long side portion 24 is located slightly above the lower end portion of the outer strip member 24A constituting the outer surface side. There is. Further, the facing surfaces of the outer strip member 24A and the inner strip member 24B are connected by a plurality of ribs 24L.

As shown in FIG. 1, the pair of short side portions 23, 23 of the upper frame 12 has a structure in which the upper wall 23C projects inward from the upper end portion of the outer strip member 23A. Further, the lower edge portion of the outer strip member 23A has an intermediate portion curved upward, and a belt receiving portion 12T is formed in the center of the upper edge portion by chamfering the outer corner portion. Further, the upper surface of the upper wall 23C of the short side portion 23 and the upper surface of the upper wall 24C of the long side portion 24 are arranged flush with each other, and the corner portions where the upper walls 23C and 24C are orthogonal to each other are stepped. A corner recess 12C is provided. Correspondingly, on the lower surface of the bottom wall 11, corner protrusions (not shown) are extended from the corners of the four corners of the lower surface protrusion 11B, and the corner protrusions of the folding container 10 on the upper stage side are on the lower stage side during stacking. It is fitted into the corner recess 12C of the folding container 10 of the above.

As shown in FIG. 2, a plurality of rotation support portions 12H are provided on the lower surface of the upper wall 23C of the short side portion 23. The rotation support portion 12H is provided with a bearing groove portion 12J projecting to one side in the lateral direction of the short side portion 23 at the lower end portion of the projecting piece hanging from the upper wall 23C. The bearing groove portion 12J has a semicircular shape curved downward. Further, a plurality of stopper protrusions 12S project from the inner edge of the lower surface of the upper wall 23C. Further, the rotation support portion 12H and the stopper protrusion portion 12S are also formed on the long side portion 24 of the upper frame 12 as shown in FIG. Although details are not shown, the rotation support portion 12H of the long side portion 24 extends downward from the rib 24L (see FIG. 2), and the stopper protrusion 12S of the long side portion 24 is the inner strip member 24B. Is partially extended downward.

As shown in FIG. 1, the first side wall 13 has a structure in which a pair of side protrusions 26, 26, a lower end protrusion 27, and an upper end rib 28 project from a flat plate-shaped main plate portion 13S. Each side protrusion 26 has a position near the side edge of the main plate portion 13S bulging outward and extends in the vertical direction. The horizontal cross section of the side protrusion 26 has a trapezoidal shape, and a plurality of horizontal ribs 26L are provided inside the side protrusion 26.

Although the details of the lower end protrusion 27 are not shown, the lower end protrusion 27 is formed by connecting a pair of horizontal ribs protruding outward from the lower edge portion of the main plate portion 13S and extending in parallel in the lateral direction by a plurality of vertical ribs. Further, as shown in FIG. 11, an engaging recess 13K opened to the lower surface and the outer surface is formed in the lateral central portion of the lower end protrusion 27, and lower sides of the engaging recess 13K are formed on both sides of the engaging recess 13K. A locking projection (not shown) is formed on the upper surface of the lateral rib. Then, the position-determining portion 11K of the bottom wall 11 is fitted into the engaging recess 13K of the first side wall 13, and the locking protrusions 11M and 11M of the bottom wall 11 are locked to the locking projections.

As shown in FIG. 3, the upper end rib 28 projects outward from the upper end edge of the main plate portion 13S. As shown in FIG. 2, a plurality of hinge protrusions 28H are provided on the upper surface of the upper end rib 28, and the above-mentioned rotation support portion 12H and stopper protrusion 12S receive between the hinge protrusions 28H and 28H. Has been done. Then, the columnar shaft portion 28J protruding from the side surface of the hinge protrusion 28H is received by the bearing groove portion 12J of the rotation support portion 12H and rotatably engaged. Further, as shown in FIG. 3, the support pins 13J penetrate the upper ends of the long side portions 24 of the upper frame 12, and the support pins 13J are fitting holes for the hinge protrusions 28H at both ends of the first side wall 13. It is fixed to (not shown). As a result, the first side wall 13 is rotatably hinged to the upper frame 12.

Further, a movable side stopper 28F is provided on a portion of the upper surface of the upper end rib 28 corresponding to the stopper protrusion 12S. The movable side stopper 28F has substantially the same shape as the movable side stopper 33F (see FIG. 2) of the upper second side wall 30 described later, stands up from the outer edge portion of the upper end rib 28, the upper end portion is curved, and the tip is a stopper protrusion. It is abutted against the portion 12S.

As shown in FIG. 4, the side of the side protrusion 26 is provided with first and second vertical ribs 29A and 29B extending in parallel with the side protrusion 26. Further, a plurality of horizontal ribs 29L are provided between the side protrusions 26 and the first vertical ribs 29A and between the first and second vertical ribs 29A and 29B. Further, of the plurality of squares formed by the first and second vertical ribs 29A and 29B and the horizontal ribs 29L, the two squares near the upper end and the lower end of the first side wall 13 are the main plate portion of the first side wall 13. The engaging recesses 29K and 29K which are closed by 13S and the outer surface side is opened are formed, and other than these, the outer surface side of the first side wall 13 is closed by the outer surface wall 29D.

As shown in FIG. 1, the second side wall 14 is divided into an upper second side wall 30 and a lower second side wall 40 at substantially the center in the vertical direction. The upper second side wall 30 has a structure in which a pair of side protrusions 31, 31 and a lower end protrusion 32 and an upper end rib 33 (see FIG. 2) project outward from a flat plate-shaped main plate portion 30S. Like the side protrusions 26 of the upper frame 12, each side protrusion 31 has a trapezoidal shape and extends in the vertical direction, and is provided with a plurality of horizontal ribs 31L inside.

As shown in FIG. 2, the upper end rib 33 of the upper second side wall 30 projects outward from the upper edge portion of the main plate portion 30S, like the upper end rib 28 of the first side wall 13, and has a plurality of hinge protrusions 33H on the upper surface. And a plurality of movable side stoppers 33F. Then, as shown in FIG. 1, the rotation support portion 12H and the stopper protrusion 12S are received between the adjacent hinge protrusions 33H, and as shown in FIG. 2, the tip of the movable side stopper 33F has a stopper protrusion. It is abutted against the portion 12S. Further, as shown in FIG. 1, support pins 14J penetrate the lower ends of the short side portions 23 of the upper frame 12 from the side, and these support pins 14J are hinge protrusions at both ends of the upper second side wall 30. It is fixed in the fitting hole (not shown) of 33H. As a result, the upper second side wall 30 is rotatably hinged to the upper frame 12.

As shown in FIG. 5, the lower end protrusion 32 of the upper second side wall 30 protrudes from the lower edge portion of the main plate portion 30S and extends in parallel in the lateral direction between a pair of horizontal ribs 32A and 32B. I will contact you by 32L. Further, a plurality of hinge protrusions 38 are provided on the lower surface of the lower end protrusion 32. The hinge protrusion 38 projects diagonally outward from the outer edge of the lower surface of the lower end protrusion 32, and the hinge shaft 38B is passed between a pair of facing pieces 38A and 38A facing each other in the lateral direction of the hinge protrusion 38.

As shown in FIG. 4, a pair of pin support protrusions 39, 39 project diagonally outward from the lower surface outer edge of the ends of the side protrusion 31 and the lower end protrusion 32. Further, through holes are formed coaxially with the hinge shaft 38B of the hinge protrusions 38 at the tips of the pin support protrusions 39 and 39.

As shown in FIG. 1, the lower second side wall 40 has a structure in which a pair of side protrusions 41, 41, a lower end rib 42, and an upper end protrusion 43 protrude from a flat plate-shaped main plate portion 40S. Similar to the side protrusion 31 of the upper second side wall 30, the side protrusion 41 of the lower second side wall 40 has a trapezoidal shape and extends in the vertical direction, and is provided with a plurality of horizontal ribs 41L inside thereof.

As shown in FIG. 2, the lower end rib 42 of the lower second side wall 40 projects outward from the lower edge portion of the main plate portion 40S. Further, the lower surface of the lower end rib 42 is provided with a plurality of hinge protrusions 42H shown in FIG. The stopper protrusion 21S and the shaft engaging portion 21H are received between the hinge protrusions 42H and 42H. Further, a shaft (not shown) is passed between the hinge protrusions 42H and 42H on both sides of the shaft engaging portion 21H, and the shaft engaging portion 21H is engaged with the shaft from above. Further, as shown in FIG. 2, on the lower surface of the lower end rib 42 corresponding to the stopper protrusion 21S, the movable side stopper 42F similar to the above-mentioned movable side stoppers 28F and 33F is the lower surface outer edge portion of the lower end rib 42. The tip thereof is abutted against the stopper protrusion 21S.

Further, as shown in FIG. 4, a plurality of ribs 42L are hung from the lower surfaces of both ends of the lower end rib 42 and the lower surface of the side protrusion 41, and are alternately arranged with the plurality of ribs 11L standing up from the bottom wall 11. I'm out. Then, the hinge pin 40J penetrates the ribs 11L and 42L. The lower second side wall 40 is rotatably hinged to the bottom wall 11 by the hinge pin 40J, the shaft engaging portion 21H described above, the shaft, and the like.

As shown in FIG. 6, the upper end protrusion 43 of the lower second side wall 40 has an upper edge portion of the main plate portion 40S bulging outward and extends in the horizontal direction, and is provided with a plurality of vertical ribs 43L inside. There is. Then, as shown in FIG. 5, the plurality of hinge protrusions 38 are received by the plurality of recesses 43H formed by dividing the plurality of positions in the longitudinal direction of the upper end protrusion 43, and the shaft engagement provided in the recess 43H. It is engaged with the portion 43K. Although the details of the shaft engaging portion 43K are not shown, the upper end portion of the protrusion rising from the bottom surface of the recess 43H is bent outward and rolled upward in a semicircular shape. Then, the shaft engaging portion 43K is engaged with the hinge shaft 38B of the hinge protrusion 38 from above. Further, as shown in FIG. 6, a contact groove 43M extending laterally along the lower end portion is formed on the inner surface side of the upper end protrusion 43, and the upper second side wall 30 is formed on the inner surface of the contact groove 43M. The stopper ridge 30T protruding outward from the lower end edge of the main plate portion 30S of the main plate portion 30S is in contact with the stopper ridge 30T.

As shown in FIG. 4, a pair of pin support protrusions 49, 49 project diagonally outward from the upper surface of the side protrusion 41 and the upper surface of the end of the upper end protrusion 43, and a pair of pin support protrusions 49, 49 project to the tip of the pin support protrusion 49. A through hole is formed. Then, the pin support protrusion 39 of the upper second side wall 30 and the pin support protrusion 49 of the lower second side wall 40 are alternately arranged, and the hinge pin 40P penetrates them. The upper second side wall 30 and the lower second side wall 40 are rotatably connected to each other around the hinge pin 40P, the hinge shaft 38B, and the like, and the vertical intermediate portion of the second side wall 14 is the present invention. It is an intermediate hinge portion 10X according to the above.

The side protrusions 31 and 41 are provided with protrusions 34A and 34A protruding toward the engagement recesses 29K and 29K of the first side wall 13, and the engagement pieces bent at a right angle from the tips of the protrusions 34A and 34A. 34B and 34B are engaged with the engaging recesses 29K and 29K. The side protrusions 31 and 41 are formed with through holes 31A and 41A for confirming whether or not the engaging pieces 34B and 34B are engaged with the engaging recesses 29K and 29K.

As shown in FIG. 5, the main plate portion 30S of the upper second side wall 30 and the main plate portion 40S of the lower second side wall 40 are formed with engaged portions 51 and 51 in the central portion in the longitudinal direction. The engaged portion 51 is formed by bulging a part of the main plate portions 30S and 40S to the outside, has a groove shape extending in the vertical direction, and has an opening 51K on the inner side surface of the second side wall 14. Specifically, the engaged portion 51 of the upper second side wall 30 has a trapezoidal shape symmetrical to the left and right when viewed from the side, and has a flat plate-shaped back wall 51A parallel to the main plate portion 30S and slightly smaller than the opening 51K. .. Further, as shown in FIG. 13, the outer surface of the back wall 51A is located on the main plate portions 30S and 40S side of the outer surfaces of the side protrusions 31 and 41. Then, as shown in FIG. 2, a pair of end walls 51B and 51B communicate between the upper and lower ends of the back wall 51A and the upper and lower ends of the opening edge of the opening 51K, and are shown in FIG. As described above, a pair of side walls 51C and 51C communicate between the left and right side portions of the back wall 51A and the left and right side portions of the opening edge of the opening 51K. The engaged portion 51 of the lower second side wall 40 also has the same shape as the engaged portion 51 of the upper second side wall 30 and protrudes from the main plate portion 40S.

As shown in FIG. 7, the partition plate 60 has a shape in which a pair of engaging protrusions 61 and 61 project from positions near both ends of each short side of a horizontally long rectangular shape. The engaging protrusion 61 has a trapezoidal shape similar to the side surface shape of the engaged portion 51. Further, as shown in FIG. 8, the entire outer edge portion of the partition plate 60 is provided with thickened reinforcing ridges 62 on both the front and back sides. The engaging protrusion 61 also has the same thickness as the reinforcing ridge 62, and vertical grooves 61A for preventing sink marks are provided side by side on the front and back of the engaging protrusion 61. Further, the entire partition plate 60 has a symmetrical shape with respect to any of the left-right, up-down, and front-back directions. Then, as shown in FIG. 2, the left and right engaging protrusions 61 of the partition plate 60 are unevenly engaged with the upper and lower engaged portions 51, 51 of the pair of second side walls 14, 14, and the partition plate 60 is engaged. The lower end portion abuts on the bottom wall 11, and the upper end portion of the partition plate 60 is located inside the lower end portion of the upper frame 12 to partition the inside of the folding container 10.

The description of the configuration of the folding container 10 with respect to other than the details of the relationship between the partition plate 60 and the second side wall 14 has been described above. The folding container 10 can be folded as follows. First, the partition plate 60 is curved and deformed in the lateral direction, for example, and as shown in FIG. 9, the engaging protrusions 61 and 61 are separated from the engaged portions 51 and 51 of one of the second side walls 14, and the other. The engaging protrusions 61 and 61 are disengaged from the engaged portions 51 and 51 of the second side wall 14. Then, as shown in FIG. 10, the partition plate 60 is removed from the folding container 10, and as shown in FIG. 11, a pair of first side walls 13 and 13 is pushed inward to lock the protruding pieces 11M and the first side wall 13. The pair of first side walls 13, 13 is folded into the upper frame 12 by disengaging the engagement with. Next, the pair of second side walls 14, 14 is folded inward in half. Then, as shown in FIG. 12, the outer strip member 23A and the outer strip member 24A of the upper frame 12 overlap on the outer edge protrusion 20 of the bottom wall 11, and the folding container 10 is in a folded state.

As shown in FIG. 13, when the folding container 10 is in the folded state, the side protrusions 31 and 41 of the upper second side wall 30 and the lower second side wall 40 abut and overlap with each other, and the engaged portions 51 and 51 overlap each other. Are opposed to each other with a slight gap and fit between the upper second side wall 30 and the lower second side wall 40. Further, the projecting piece 34A and the engaging piece 34B of the lower second side wall 40 come into contact with the bottom wall 11, and the lower second side wall 40 becomes substantially horizontal and overlaps the first side wall 13 from below. The projecting piece 34A and the engaging piece 34B of the upper second side wall 30 face each other with a gap from the main plate portion 13S of the first side wall 13. Here, assuming that the "engaged portion" that is the engaging partner of the partition plate 60 has a structure protruding from the inner side surface of the second side wall 14, it abuts on the bottom wall 11 and the first side wall 13. In addition, the folded state of the folding container 10 increases in the vertical direction, but in the folding container 10 of the present embodiment, this does not occur and the folding container 10 becomes compact.

To put the folding container 10 in the assembled state, the upper frame 12 is lifted upward with respect to the bottom wall 11. Then, the upper second side wall 30 and the lower second side wall 40 of both second side walls 14 and 14 open, and the first side walls 13 and 13 rotate downward under their own weight and are between the second side walls 14 and 14. Get in. Further, when the first side wall 13, 13 enters between the pair of second side walls 14, 14, the space between the upper second side wall 30 and the lower second side wall 40 of the second side wall 14 is opened. Then, when the first side walls 13 and 13 are pressed from the inside and rotated downward, the locking projection 11M of the bottom wall 11 is locked to the first side wall 13 and the first side wall 13 is held in an upright posture. At the same time, the engaging pieces 34B and 34B of the second side wall 14 are engaged with the engaging recesses 29K and 29K of the first side wall 13. Then, if the partition plate 60 is curved and deformed in the lateral direction, for example, the engaging protrusions 61 and 61 of the partition plate 60 are engaged with the engaged portions 51 and 51 of the pair of second side walls 14 and 14. , The folding container 10 is in the assembled state.

When the folding container 10 is in the assembled state, the partition plate 60 is arranged between the pair of second side walls 14 and 14, and the upper second side wall 30 and the lower second side wall constituting each of the second side walls 14 and 14 are arranged. It is matched with both 40. As a result, the second side walls 14 and 14 are prevented from being folded in half, and the assembled state of the folding container 10 is strengthened. Further, since the engaged portion 51, which is the engaging partner of the partition plate 60, has a structure formed by being recessed in the upper second side wall 30 and the lower second side wall 40, the engaged portion 51 is formed as in the conventional case. The 51 does not bite into the luggage, and the load on the luggage can be suppressed. Moreover, since the engaged portions 51 and 51 are provided on both the upper second side wall 30 and the lower second side wall 40 and engage with the engaging protrusions 61 and 61 of the partition plate 60, the inside of the folding container 10 The standing posture of the partition plate 60 is stabilized by. Further, since the partition plate 60 is abutted against the inner side surfaces of both the upper second side wall 30 and the lower second side wall 40, the prevention of bending of the second side walls 14 and 14 by the partition plate 60 is also stable.

By the way, in order to securely engage the engaging piece 34B of the second side wall 14 with the engaging recess 29K of the first side wall 13, or to ensure that the second side wall 14 is smoothly folded in half. Each second side wall 14 is positioned so that the slightly bent inward position is the fully open position, as highlighted in FIG.

Specifically, the upper second side wall 30 has a hanging position in which the movable side stopper 33F abuts on the stopper protrusion 12S so that the main plate portion 30S is inclined inward from the upper frame 12 by an inclination angle θ1 in the vertical direction. Positioned to. Further, the lower second side wall 40 is in an upright position where the movable side stopper 42F abuts on the stopper protrusion 21S so that the main plate portion 40S is inclined inward from the bottom wall 11 by the above-mentioned inclination angle θ1 in the vertical direction. Positioned to.

Further, when the upper second side wall 30 and the lower second side wall 40 are in the above-mentioned hanging position and standing position, the stopper ridge 30T abuts on the inner surface of the contact groove 43M. As a result, as described above, the second side wall 14 is positioned so that the position slightly bent inward becomes the fully open position, and the intermediate hinge portion 10X of the second side wall 14 is positioned from the inner surface of the second side wall 14. It will be in the most inwardly protruding state. On the other hand, the partition plate 60 has a structure described in detail below.

A gap is provided between the partition plate 60 and the pair of second side walls 14, 14 to allow the partition plate 60 to move in the opposite direction of the pair of second side walls 14, 14. Specifically, assuming that the partition plate 60 is arranged in the center between the second side walls 14, 14, each engaging protrusion 61 is located in the engaged portion 51 in any of the up-down, left-right, and front-back directions. It will not come into contact with the inner surface of the engaged portion 51, and will not come into contact with the inner surfaces of the main plate portions 30S and 40S and the partition plate 60. As a result, the pressing of the intermediate hinge portion 10X by the partition plate 60 is surely prevented, and the deformation of the second side walls 14 and 14 to the outside is prevented.

Further, among the side edge portions of the partition plate 60, the hinge facing portion 63 located between the engaging protrusions 61 and 61 and abutted against the intermediate hinge portion 10X has an engaging protrusion with respect to the hinge facing portion 63. It is retracted inside the folding container 10 by a distance L1 from the inner side surface facing portions 64 and 64 located on the upper side and the lower side of the 61. As a result, even if the partition plate 60 moves to one side in the lateral direction and comes into contact with the second side wall 14 of the other side, the pressing of the intermediate hinge portion 10X by the partition plate 60 is suppressed and the partition plate 60 is pressed to the outside of the second side wall 14. Deformation is prevented.

Further, the tip edge 61B of the engaging protrusion 61 is inclined in the vertical direction by an inclination angle θ2 so that the side closer to the hinge facing portion 63 is located inside the folding container 10 from the far side. This also suppresses the pressing of the intermediate hinge portion 10X by the partition plate 60, and prevents the second side walls 14, 14 from being deformed to the outside. Further, the inclination angle θ2 is larger than the inclination angle θ1 in the vertical direction of the back wall 51A of the engaged portion 51, and the closer to the hinge facing portion 63, the more the tip edge 61B of the engaging protrusion 61 is engaged. It is designed to be separated from the back wall 51A of the joint portion 51. This also prevents the engaging protrusion 61 from pushing the vicinity of the intermediate hinge portion 10X to the outside.

[Other embodiments]
The present invention is not limited to the embodiments, and for example, embodiments as described below are also included in the technical scope of the present invention, and various modifications other than the following are made without departing from the gist. Can be carried out.

(1) In the above embodiment, the engaged portion 51 according to the present invention has a bag structure that bulges outward from the second side wall 14, but the engaged portion is simply the main plate of the second side wall 14. It may have a hole shape that penetrates the portions 30S and 40S. However, if the engaged portion has a bag structure as in the above embodiment, it is possible to prevent foreign matter from entering the folding container and outflow of luggage, and it is possible to increase the strength.

(2) In the above embodiment, the engaged portion 51 is provided on both the upper second side wall 30 and the lower second side wall 40 of the second side wall 14, but only one of them is engaged. It may be configured with.

(3) Although the number of partition plates 60 of the folding container 10 of the above embodiment is one, a plurality of partition plates 60 may be provided to partition the inside of the folding container 10 into three or more regions. Further, one partition plate 60 may be unevenly distributed at the end portion of the folding container 10 instead of the center. Further, a partition plate orthogonal to the partition plate 60 may be used in combination.

10 Folding container 10X Intermediate hinge part 11 Bottom wall 12 Upper frame 13 First side wall 14 Second side wall 30 Upper second side wall 30S, 40S Main plate part 32 Lower end protrusion 40 Lower second side wall 51 Engagement part 60 Partition plate 61 Engagement protrusion 63 Hinge facing part 64 Inner side facing part

Claims (5)

A pair of first side walls and a pair of second side walls are arranged to face each other between the bottom wall and the upper frame, and the upper end of the pair of first side walls is hinged to the upper frame. The pair of second side walls has an upper end portion and a lower end portion hinged to the upper frame and the bottom wall, and has an intermediate hinge portion in the middle portion in the vertical direction. In a foldable container that can be folded in half
Arranged between the pair of second side walls, the second side wall is abutted against both the upper second side wall above the intermediate hinge portion and the lower second side wall below the intermediate hinge portion, respectively. A partition plate that divides the pair of first side walls into a plurality of areas,
An engaged portion in which at least one part of the upper second side wall or the lower second side wall is bulged outward and an engaging protrusion protruding from the partition plate is unevenly engaged with the inside. Equipped with
The engaged portion is accommodated in the space formed between the upper second side wall and the lower second side wall by folding the second side wall.
A pair of side protrusions project from both side edges of the outer surface of the upper second side wall or the lower second side wall, and the upper second side wall or the lower second side wall located between the pair of side protrusions. The engaged portion is formed by bulging a part of the main plate portion of the two side walls.
A folding container in which the amount of protrusion of the engaged portion from the main plate portion is smaller than the amount of protrusion of the side protrusion from the main plate portion . A pair of first side walls and a pair of second side walls are arranged to face each other between the bottom wall and the upper frame, and the upper end of the pair of first side walls is hinged to the upper frame. The pair of second side walls has an upper end portion and a lower end portion hinged to the upper frame and the bottom wall, and has an intermediate hinge portion in the middle portion in the vertical direction. In a foldable container that can be folded in half
Arranged between the pair of second side walls, the second side wall is abutted against both the upper second side wall above the intermediate hinge portion and the lower second side wall below the intermediate hinge portion, respectively. A partition plate that divides the pair of first side walls into a plurality of areas,
An engaged portion in which at least one part of the upper second side wall or the lower second side wall is bulged outward and an engaging protrusion protruding from the partition plate is unevenly engaged with the inside. Equipped with
The engaged portion is accommodated in the space formed between the upper second side wall and the lower second side wall by folding the second side wall.
The engaged portion is provided on both the upper second side wall and the lower second side wall.
When the second side wall is folded, the upper and lower engaged portions face each other with a gap . A pair of first side walls and a pair of second side walls are arranged to face each other between the bottom wall and the upper frame, and the upper end of the pair of first side walls is hinged to the upper frame. The pair of second side walls has an upper end portion and a lower end portion hinged to the upper frame and the bottom wall, and has an intermediate hinge portion in the middle portion in the vertical direction. In a foldable container that can be folded in half
Arranged between the pair of second side walls, the second side wall is abutted against both the upper second side wall above the intermediate hinge portion and the lower second side wall below the intermediate hinge portion, respectively. A partition plate that divides the pair of first side walls into a plurality of areas,
It is provided with an engaged portion that is formed through or recessed in at least one of the upper second side wall or the lower second side wall, and the engaging protrusions protruding from the partition plate are unevenly engaged. ,
The engaging protrusion and the engaged portion are engaged at a depth that cannot be engaged and disengaged unless the partition plate is curved and deformed in the lateral direction.
A pair of side protrusions project from both side edges of the outer surface of the upper second side wall or the lower second side wall, and the upper second side wall or the lower second side wall located between the pair of side protrusions. The engaged portion is formed by bulging a part of the main plate portion of the two side walls.
A folding container in which the amount of protrusion of the engaged portion from the main plate portion is smaller than the amount of protrusion of the side protrusion from the main plate portion. A pair of first side walls and a pair of second side walls are arranged to face each other between the bottom wall and the upper frame, and the upper end of the pair of first side walls is hinged to the upper frame. The pair of second side walls has an upper end portion and a lower end portion hinged to the upper frame and the bottom wall, and has an intermediate hinge portion in the middle portion in the vertical direction. In a foldable container that can be folded in half
Arranged between the pair of second side walls, the second side wall is abutted against both the upper second side wall above the intermediate hinge portion and the lower second side wall below the intermediate hinge portion, respectively. A partition plate that divides the pair of first side walls into a plurality of areas,
It is provided with an engaged portion that is formed through or recessed in at least one of the upper second side wall or the lower second side wall, and the engaging protrusions protruding from the partition plate are unevenly engaged. ,
The engaging protrusion and the engaged portion are engaged at a depth that cannot be engaged and disengaged unless the partition plate is curved and deformed in the lateral direction.
The engaged portion is provided on both the upper second side wall and the lower second side wall.
When the second side wall is folded , the upper and lower engaged portions face each other with a gap. The engaged portion is provided on both the upper second side wall and the lower second side wall.
The folding container according to claim 1, wherein the partition plate has a symmetrical shape in the horizontal direction and the vertical direction.

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