JPH04242536A - Foldable goopds-delivery box - Google Patents

Abstract

PURPOSE:To provide a goods-delivery box the size of which can be selected arbitrarily and which is easy to handle in a folded state. CONSTITUTION:A goods-delivery box is constituted of an upper and a lower reinforcing frame 10 and 12, a bottom plate 14 to which the lower reinforcing frame 12 is fixed and side plates 16, 18, 20 and 22. The upper reinforcing frame 10 is fixed with corner members 24 which protrude upward, and each corner part is engaged fixedly with an L-shaped engaging part. The lower reinforcing frame 12 is fixed to both sides of the bottom plate 14 and is formed integrally with a projection 28 which protrudes upward to invade into the engaging part. The side plates 16 and 18 are divided substantially on a central axis and connected with a hinge part 30a. The side plates 16 and 18 are provided with a hinge part 34. The hinge part 34 is rotatable by 90 deg.. A semi-transparent auxiliary spliced plate 42 is provided on a lower half inside of the side plates 16 and 18, and its tip end engages with a cloth fastener. The side plates 20 and 22 are fixed to the lower reinforcing frame 12, and their upper ends are fixed with a reinforcing member 38.

Description

[Detailed description of the invention]

0001

[Industrial Application Field] The present invention relates to plastic boards,
This invention relates to foldable returnable boxes made of board materials such as cardboard, plastic cardboard, and plywood.

0002

[Prior Art and Problems] Various foldable boxes have been proposed to save storage space when not in use and to improve transportation efficiency.

[0003] As a folding method for these boxes, among the four side plates installed upright on the bottom plate, for example, one pair on the toe side is a hinge plate that can be rotated by a connected hinge, and the other opposing side plate is It is known that a pair is divided into two parts, hingedly connected to each other, and placed inside. In this configuration, a pair of side plates and a gate plate are folded onto a bottom plate.

[0004] A typical manufacturing method for this type of folding box is to form the bottom plate, side plates, flap plates, etc. by injection molding of plastic, and to integrally provide the above-mentioned hinge during this molding.

[0005] However, such a manufacturing method using injection molding has the problems that the mold is expensive and that there is a limit to the size of the box.

[0006] Therefore, the present inventors have developed a new structure that can solve the above problems, that is, the size such as length, width, depth, etc. can be arbitrarily selected, and furthermore, it is easy to handle when folded. The present invention was completed after extensive research into returnable boxes.

[0007]

[Means for Solving the Problems] In order to achieve the above object, the present invention provides a top and bottom reinforcing frame, a bottom plate to which the bottom reinforcing frame is fixed, and four side plates erected around the four circumferences of the bottom plate. In the returnable box with an open top end, the pair of opposing first and second side plates of the side plates each have a hinge portion at an intermediate position in the height direction and near a joint between the bottom plate and the upper reinforcing frame. and the other pair of third and fourth side plates facing each other have a hinge portion near the joint on at least one of the bottom plate side or the upper reinforcing frame side, One of the reinforcing frames has a protrusion that projects upwardly and downwardly, and the other side of the reinforcing frame has an engaging portion that engages with the protrusion when the side plate is folded onto the bottom plate. shall be.

The third and fourth side plates have the hinge portion near the joint with the lower reinforcing frame, and the hinge portion, the first and second side plates, and the lower reinforcing frame are connected to each other. hinge parts provided near the joints with the bottom plate are respectively provided at predetermined intervals in the height direction from the bottom plate, and when each side plate is folded onto the bottom plate, A space may be formed.

[0009] Board materials that can be used for the bottom plate, side plates, etc. of the box of the present invention include plastic cardboard, plastic board,
Light and rigid materials such as cardboard or plywood are preferable.

The material used for the upper and lower reinforcing frames may be either metal or plastic, but aluminum is preferable from the viewpoint of rigidity and high strength.

[0011] It is desirable that the protrusions and engaging parts provided on the upper and lower reinforcing frames be provided at the four corners of the frame from the viewpoint of stability in the folded state. It's okay.

[0012] Depending on the size and purpose of the folding box, the state in which the protrusion and the engaging part are engaged can be such that they simply fit into each other, or they can be fixed by locking each other. It may be changed depending on the purpose.

[0013] In the case where the protrusions are fixed by mutually locking, the strength with which the locking part fixes the protrusions is such that the fitting can be done by manual operation, and when handling the protrusions in the folded state, A degree of tightness is required to prevent the state from being released, and this fitting and fixing structure employs a through hole and a convex portion that fits into the hole. Generally, when the size of the box is large, it is easier for one person to assemble the box if the fastening structure is not used and the box is simply engaged.

[0014] The lower reinforcing frame has the function of reinforcing the bottom plate and the joint between the bottom plate and the side plates, so depending on the required strength of the bottom, it can be can be provided. When the first and second side plates are folded,
Since the divided parts need to be folded over, the hinge part at the intermediate position needs to rotate 180 degrees, so metal hinges or thin plastic hinges are used as hinge structures with this function. can.

Furthermore, in the first and second side plates, the hinge portions provided in the vicinity of the upper and lower reinforcing frames are required to rotate 90° toward the bottom plate. In addition to using the various hinges described above, the structure may be such that the board material itself is provided with pressurized ruled lines. Third
For example, the fourth side plate is provided with a hinge part that is rotatable starting from the bottom plate side, and extends inwardly through the hinge part.
It has a structure that can be bent by 0 degrees, and a reinforcing material that can abut and engage with the upper reinforcing frame is fixed to the upper end side, and when assembled, the reinforcing frame and this reinforcing material are mutually locked with a cloth fastener etc. It may be configured as follows.

[0016] Furthermore, the edges of the third and fourth side plates are provided with
By providing the folded portion and configuring the folded portion to abut the first and second side plates from the inner surface side, it is possible to prevent dirt and the like from entering from the mating surfaces of the circumferentially adjacent side plates. If you put items into the box in an assembled state, when you lift the box, the load will be concentrated on the handle side plate itself, the hinge, the joint between the side plate and the upper reinforcing frame, etc., so the load will be adjusted accordingly. Therefore, these strengths and structures may be taken into consideration, or an auxiliary reinforcing plate may be provided as reinforcing means inside the box.

[0017] In the middle of folding or assembly, the first and second side plates lack independence due to the presence of the hinge section at the intermediate position of the side plates, so auxiliary splints are provided inside these side plates. , the auxiliary splint is fixed to either the upper or lower side plate divided by the hinge at the intermediate position, and the tip of the majority part on the non-fixed side is attached to the side plate on the non-fixed side or the folded third side plate.
By arranging it to engage with the fourth side plate, smooth folding or assembly can be ensured.

[0018]

[Operations and Effects of the Invention] According to the foldable returnable box having the above structure, when the box is folded, the protrusion provided on either one of the upper and lower reinforcing frames fits into the engaging portion provided on the other. Therefore, the folded state becomes stable. Also, claim 3
According to this configuration, a space is formed on the bottom plate, so that, for example, a partition material for an assembly type box can be stored in this space.

[0019]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings. 1 to 7 show an embodiment of a foldable returnable box according to the present invention. The returnable box shown in the same figure, as shown in FIG. It is composed of the first to fourth side plates 16, 18, 20, 22,
It has a rectangular structure with an open top.

The upper and lower reinforcing frames 10 and 12 are made of aluminum in this embodiment, and the upper reinforcing frame 10 is formed into a rectangular shape with a substantially concave cross section, and has tip portions on the four corner sides. An L-shaped corner member 24 that protrudes upward.
are firmly fixed thereto, and L-shaped engaging portions 26 are fitted and fixed in the recesses at each corner. The lower reinforcing frame 12 is
It is composed of an angle having an L-shaped cross section, and is fixed to both sides of the bottom plate 14 in the longitudinal direction with rivets, and projections 28 having an L-shaped cross section projecting upward are integrally formed at both ends thereof. In this embodiment, the lower reinforcing frame 12 is provided only on both sides of the bottom plate 14 in the longitudinal direction, but it can also be formed in the same rectangular shape as the upper reinforcing frame 10. For the bottom plate 14 and the first to fourth side plates 16 to 22, plastic cardboard (manufactured by the present applicant; trade name: Danplate A-5) is used in this embodiment.

As shown in FIGS. 1 and 2, a pair of first and second side plates 16 and 18 provided at opposite positions in the width direction of the bottom plate 14 are located approximately at the center in the height direction. 180° divided on the axis and fixed with rivets
A thin hinge part 30a made of plastic that can be rotated is placed in the center, and plastic hinges 36 with rotation shafts hinged to both ends are interposed to connect the parts. Further, the first and second side plates 16 and 18 are integrated with the short side portions of the bottom plate 14, and crease lines 32 are provided in the portions that define the bottom plate 14 and the side plates 16 and 18. The side plates 16 and 18 are oriented at 9 degrees with respect to the bottom plate 14 through the crease line 32.
It is bent at 0°, and its upper end is fitted into the recess of the upper reinforcing frame 10 and fixed with a rivet.

Furthermore, the first and second side plates 16, 18
is located near the joint with the bottom plate 14 and at a height h from the bottom plate 14 is provided with a hinge part 34 in which a U-shaped aluminum frame is fixed with a hinge, and a hinge part 34 is provided at the joint with the upper reinforcing frame 10. A bending hinge portion 36 is provided nearby. These hinge portions 34 and bending hinge portions 36 are capable of rotating by 90 degrees, and in this embodiment, the bending hinge portions 3
6 is constituted by pressure ruled lines.

Furthermore, in this embodiment, as will be described later, during the folding or assembly process, the presence of the hinge portion 30 at an intermediate position between the first and second side plates 16, 18 allows the first and second side plates to be Since the side plates 16 and 18 lack independence, a translucent auxiliary splint 42 is glued or riveted to the lower half of the inside of the side plates 16 and 18, and its tip is attached to the upper half of the side plates 16 and 18. It is configured to engage with a provided fabric fastener 44 to ensure smooth folding or assembly.

On the other hand, third and fourth side plates 20 and 22 are provided at opposing positions in the longitudinal direction of the bottom plate 14.
As shown in FIGS. 1 and 3, its lower end is fixed to the lower reinforcing frame 12 by rivets, and a reinforcing member 38 having a substantially concave cross section is fitted and fixed to its upper end, and its transverse direction A pair of folded portions 40 are integrally provided at the end edges of. In addition, pressure is applied to the third and fourth side plates 20 and 22 at heights h' and h'' (where h'<h'' and lower than h by an amount corresponding to the thickness of the side plates) from the bottom plate 14. Third folding hinge parts 46', 46'' formed by ruled lines are provided, and are configured to be rotatable inwardly by 90° from the third bending hinge parts 46', 46'' as starting points.

Furthermore, a cloth fastener 48 that engages with the reinforcing member 38 and the upper reinforcing frame 10 is attached to the abutting position of the reinforcing member 38 and the upper reinforcing frame 10.

FIG. 4 shows details of the engaging portion 26 and the protrusion 28. In this embodiment, the engaging portion 26 is made of plastic and is fitted and fixed within the recess of the upper reinforcing frame 10. The L-shaped hole 26b is formed at a corner of the main body 26a, and into which the protrusion 28 of the lower reinforcing frame 12 is inserted. The protrusion 28 has an L-shaped cross section corresponding to the hole 26b.

In the returnable box having the above configuration, as shown in FIG.
are stacked on the bottom plate 14 via the bent hinge parts 46', 46''. At this time, the first and second side plates 16, 18 are provided with the hinge part 30, so as to be folded as shown in FIG. , it tries to bend inward, but in this case, the auxiliary splint 4
2 are engaged with the upper halves of these side plates by cloth fasteners 44, the side plates 16 and 18 are released from the fasteners and go through the state shown in the figure.
From one side plate 16 to the other side plate 18, the hinge portion 3
0, and is stacked on the third and fourth side plates 20, 22 via the first and second bending hinge parts 34, 36.

At this time, since the projections 28 provided on the lower reinforcing frame 12 protrude upward, when the upper reinforcing frame 10 is lowered by folding the side plates 16 and 18, the projections 28
enters into the hole 26b of the engaging portion 26 and is fitted. FIG. 7 shows the state of the box folded in this manner, and the handle g (the opposite side is not shown) can be used to handle the box in this state.

Furthermore, in the returnable box of this embodiment, the first and third bending hinge parts 34 and 46 are at a height h' from the bottom plate 14.
, h'', a space is formed above the bottom plate 14 in the folded state, and in this space, for example, a prefabricated partition material inserted into the returnable box can be inserted. In addition, when assembling the box with the above structure from the folded state, the above operation can be performed in reverse.

FIG. 8 shows a second embodiment of the foldable returnable box according to the present invention. The returnable box shown in the figure is
The basic structure is the same as that of the first embodiment, but when assembled into a box, there is a reinforcing auxiliary plate 50 inside the box.
This is an example in which the following is provided. The reinforcing auxiliary plate 50 is
It is composed of a bottom plate portion 50a having almost the same shape as the bottom plate 14, a pair of side plate portions 50b provided on both sides of the bottom plate portion 50, and a reinforcing member 50c fitted and fixed to the tip of the side plate portion 50b, The bottom plate part 50a and the side plate part 50b are connected via a bending hinge part 50d.

[0031] The reinforcing auxiliary plate 50 configured as described above is
When the box is folded, the side plate part 50b is folded onto the bottom plate part 50a via the bending hinge part 50d, and when the box is assembled, it is rotated 90 degrees to follow the side plate of the box. . In this case, a cloth fastener that engages with each other may be provided between the reinforcing member 50c and the upper reinforcing frame 10. The returnable box configured in this way can also provide the same effects as the above-mentioned embodiment, and in particular, according to this embodiment, the bottom and sides of the box are reinforced by the reinforcing auxiliary plate 50. This makes it suitable as a box for storing heavy items.

In the above embodiment, the auxiliary splint 42 is provided inside the first and second side plates 16, 18, but this auxiliary splint 42 is not necessarily required, and the third side plate 42 is not necessarily required. Also, the folded portions 40 of the fourth side plates 20, 22 are not necessarily required. Further, the positional relationship between the protrusion 28 and the locking part 26 is not limited to the above embodiment, and it is of course possible to provide the protrusion 28 and the locking part 26 at a position other than the corner of the reinforcing frame, or to reverse the vertical relationship. Furthermore, the configuration of the side plates is not limited to the above, and for example, the configuration of the first and second side plates and the third,
It is also possible to reverse the configuration of the fourth side plate.

9 to 15 show a third embodiment of the foldable returnable box according to the present invention. In the following description, the same reference numerals will be used for the same or corresponding parts as in the first embodiment described above, and detailed description will be omitted. The returnable box shown in the figure has upper and lower reinforcing frames 10 and 12, and a bottom plate 14 to which the lower reinforcing frame 12 is fixed, as shown in FIG. 9 in its assembled state.
and four first to fourth side plates 16, 18, 20, 22 erected around the four circumferences of the bottom plate 14, and has a rectangular parallelepiped structure with an open upper end.

As shown in FIGS. 9 and 10, a pair of first and second side plates 16 and 18 provided at opposite positions in the width direction of the bottom plate 14 are located approximately at the center in the height direction. 180 divided on the shaft and fixed with rivets
They are connected via an aluminum hinge part 301 that can rotate by . Further, the first and second side plates 16 and 18 are integrated with the short side portions of the bottom plate 14, and the portions that define the bottom plate 14 and the side plates 16 and 18 include:
A folding line 32 is provided, and the side plates 16 and 18 are bent at 90 degrees with respect to the bottom plate 14 via this folding line 32, and the upper end thereof is fitted into the recess of the upper reinforcing frame 10. It is fixed with rivets.

Furthermore, the first and second side plates 16, 18
A first bending hinge part 341 is provided near the joint with the bottom plate 14 at a height h from the bottom plate 14, and a bending hinge part 341 is provided near the joint with the upper reinforcing frame 10. A section 36 is provided. These hinge portions 34 and bending hinge portions 36 are capable of rotation through 90 degrees, and in this embodiment are constructed of pressure ruled lines.

Furthermore, in this embodiment, as will be described later, in the intermediate stage of folding or assembly, the presence of the hinge portion 301 at an intermediate position between the first and second side plates 16, 18 allows the first and second side plates to be Since the side plates 16 and 18 lack self-reliance, a transparent flexible auxiliary plate 421 is glued or riveted to the inside of these side plates 16 and 18, and third and fourth plates with folded tips are attached. side plate 20,
22 to ensure smooth folding or assembly.

On the other hand, third and fourth side plates 20 and 22 are provided at opposing positions in the longitudinal direction of the bottom plate 14.
As shown in FIGS. 9 and 11, its lower end is fixed to the lower reinforcing frame 12 by a rivet, and a reinforcing member 38 having a substantially concave cross section is fitted and fixed to its upper end, and the reinforcing member 38 in the transverse direction A pair of folded portions 40 are integrally provided at the end edges of.

Further, the third and fourth side plates 20 and 22 have a third pressure ruled line at a height h1' (lower than h1 by an amount corresponding to the thickness of the side plates) from the bottom plate 14.
A bending hinge part 46 is provided, and the bending hinge part 46 is configured to be able to rotate inwardly by 90 degrees using the bending hinge part 46 as a starting point. Further, a cloth fastener 48 that engages with the reinforcing member 38 and the upper reinforcing frame 10 is attached to the abutting position of the reinforcing member 38 and the upper reinforcing frame 10.

FIG. 12 shows details of the engaging portion 26 and the protrusion 28. In this embodiment, the engaging portion 26 is made of plastic and is fitted and fixed within the recess of the upper reinforcing frame 10. an L-shaped main body 26a, and an L-shaped main body 26a, which is bored at a corner of the main body 26a, into which the protrusion 28 of the lower reinforcing frame 12 is inserted.
It is composed of a letter-shaped hole 26b and two pairs of hemispherical protrusions 26c that protrude to face the inner surface of the hole 26b.

[0040] The protrusion 28 has an L corresponding to the hole 26b.
It has a letter-shaped cross-sectional shape, and a pair of through holes 28a are bored in its side surfaces. The distance between the tips of the pair of hemispherical protrusions 26c is slightly smaller than the thickness of the protrusion 28. Further, the diameter of each hemispherical convex portion 26c is set so as to be able to fit into the through hole 28c.

In the returnable box having the above configuration, as shown in FIG. 13, first, the third and fourth side plates 20, 22 are stacked on the bottom plate 14 via the third bending hinge portion 46. At this time, since the first and second side plates 16 and 18 are provided with the hinge portion 30, they tend to bend inward as shown in FIG. If it is locked to the cloth fastener 44, the side plates 16,1
8 is stable in the state shown in the figure, and subsequent folding can be performed smoothly.

Then, the side plates 16, 1 are attached by the auxiliary splint 42.
8 is stabilized, the third and fourth side plates 2 are connected in order from one side plate 16 to the other side plate 18 via the hinge part 301 and the first and second bending hinge parts 34 and 36.
Stack on top of 0,22. At this time, since the projections 28 provided on the lower reinforcing frame 12 protrude upward, when the upper reinforcing frame 10 descends due to the stacking of the side plates 16 and 18,
The protrusion 28 pushes open the spherical convex portion 26c of the engaging portion 26 and fits into the hole 26b, and the through hole 28a of the protrusion 28 is inserted into the hole 26b.
By fitting the protrusion 26c with the protrusion 26c, the protrusion 28 is fixed to the engagement portion 26.

FIG. 15 shows the state of the box folded in this manner. In this state, the projections 28 are fixed to the engaging portions 26, so even if the upper reinforcing frame 10 is lifted by hand, , the hinge portions 30 of the side plates 16, 18 are prevented from being half-open. The returnable box of the third embodiment having the above structure also provides the same effects as those of the first embodiment.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a returnable box according to a first embodiment of the present invention in an assembled state.

FIG. 2 is a sectional view taken along the line aa in FIG. 1;

FIG. 3 is a sectional view taken along line bb in FIG. 1;

FIG. 4 is an explanatory diagram showing the relationship between the protrusion and the engaging portion of the box.

FIG. 5 is a perspective view of the box in the middle of folding.

FIG. 6 is a sectional view taken along line cc in FIG. 5;

FIG. 7 is a perspective view of the box in a fully folded state.

FIG. 8 is a sectional view showing a second embodiment of the present invention.

FIG. 9 is a perspective view of a returnable box according to a third embodiment of the present invention in an assembled state.

FIG. 10 is a sectional view taken along line dd in FIG. 9;

FIG. 11 is a sectional view taken along line ee in FIG. 9;

FIG. 12 is an explanatory diagram showing the relationship between the protrusion and the engaging portion of the box.

FIG. 13 is a perspective view of the box in the middle of folding.

FIG. 14 is a sectional view taken along line ff in FIG. 13;

FIG. 15 is a perspective view of the box in a fully folded state.

[Explanation of symbols]

10 Upper reinforcement frame 12 Lower reinforcement frame 14 Bottom plate 16 First side plate 18 Second side plate 20 Third side plate 22 Fourth side plate 26 Engagement part 28 Protrusion 30 Hinge part 34, 36, 46 bending hinge part

Claims (3)

[Claims] Claim 1: In a returnable box with an open top end and comprising a top and bottom reinforcing frame, a bottom plate to which the bottom reinforcing frame is fixed, and four side plates erected around the four sides of the bottom plate, one of the side plates is A pair of opposing first and second side plates each have a hinge portion at an intermediate position in the height direction and near a joint between the bottom plate and the upper reinforcing frame; The side plate has a hinge portion near a joint on at least one of the bottom plate side or the upper reinforcing frame side, and either one of the upper and lower reinforcing frames has a protrusion that projects upward or downward, and The foldable returnable box is characterized in that the other side of the reinforcing frame has an engaging portion that engages with the protrusion when the side plate is folded onto the bottom plate. 2. The foldable returnable box according to claim 1, wherein the protrusion and the engaging portion are capable of being fixed to each other. 3. The third and fourth side plates have the hinge portion near the joint with the lower reinforcing frame, and the hinge portion, the first and second side plates, and the lower reinforcing frame are connected to each other. Hinge portions provided near joints with the reinforcing frame are respectively provided at predetermined intervals in the height direction from the bottom plate, and when each side plate is folded onto the bottom plate, the bottom plate The collapsible returnable box according to claim 1, characterized in that a space is formed at the top.