JP2546317Y2 - Returnable box - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION << Industrial application field >> The present invention relates to a returnable box having a foldable portion using a plate material such as plastic board, cardboard, plastic cardboard and plywood.

<< Prior Art and its Defects >> Various foldable boxes have been proposed in order to save storage space when not in use and to improve transport efficiency.

Among these boxes, as a folding system, a pair of four side plates erected on a bottom plate are rotatable by a hinge connected to a pair of toes and a hinge plate which is divided into two and hinged to each other. It is known that the bottom plate can be folded in the form of a bottom plate by being folded inward by a set side plate.

A typical method of manufacturing a folding box of this type is to integrally form hinges and joints by plastic injection molding on edges of a bottom plate, a side plate, a tilt plate, an upper frame, and the like. There is a method of assembling into a box.

However, the members formed by the injection molding have a complicated structure, which increases the cost of the mold for the injection molding, and the size of the box is limited to the size of the injection molded product. There was basically a problem such as not being able to respond to the request of

Therefore, the present inventors can solve the above-mentioned problems, that is, the boxes can be freely selected in size such as length, width, and depth, and can be stacked. The enthusiastic study has been conducted for the purpose of providing a simple box, and a configuration capable of achieving this object has already been disclosed in Japanese Patent Laid-Open No.
No. 37345 proposes this.

However, the foldable box disclosed in the above publication has a three-axis structure in which a connecting shaft for rotating the tilting plate is provided with a pair of horizontal shafts extending at right angles to both ends of a vertical shaft portion, and the structure is complicated. And the corner member on the side plate side protrudes toward the tilting plate side.When assembling the box from the folded state, if the tilting plate is pulled up by mistake, the side plate side protruding toward the tilting plate side The end of the corner member interferes with the corner member on the side of the tilt plate, and if the tilt plate is further rotated upward in this state, the corner member may be damaged.

By the way, this type of folding box is used for use as a returnable box for carrying in and out various components, and the returnable box is required to be of various sizes depending on the type of storage object, and in particular, When the depth of the box is large, the number of divided side plates increases when the box is made foldable, and the number of components such as hinges to be used increases, resulting in problems in assembly man-hours and costs.

Therefore, in the present invention, while minimizing the increase in the number of divisions of the side plates, and avoiding the damage of the corner members described above, it is naturally possible to stack when the air conditioner is folded in an empty state while using it. The purpose is to provide boxes.

<< Means for solving the problem >> In order to achieve the above object, a return box according to the present invention is:
A returnable box having a rectangular tubular portion provided on the upper side and a folded portion integrally provided at a lower end of the tubular portion, and the tubular portion has vertical and horizontal reinforcing frames fitted around four circumferences. It has four non-foldable face plates which are attached to each other, and has an L-shaped integral corner member fixed to the four corners at the upper end thereof, and the folded portion has an upper end at the lower end of the tubular portion. Has a pair of side plates and a tilt plate hinged together, and a bottom plate hinged to a lower end of the side plate, and the side plate is vertically divided into at least two parts, and the divided parts are hinged to each other. In addition, a reinforcing frame that can be engaged with a reinforcing frame of the tilting plate during assembly is fixed to the side plate and the bottom plate.

The plate material that can be used for the rectangular tubular portion, side plate, tilt plate, etc. of the return box of the present invention may be a plastic board, cardboard, plastic cardboard, plywood, or the like.

The hinges used for the reinforcing frames, the side plates, the bottom plate, etc. are rotatable, such as those in which the reinforcing frames are joined by thin hinges as hinge members, hinges, and those which are pivotally mounted in an uneven fitting state. Any method may be used as long as it is appropriate.

<< Effects of the Invention >> According to the returnable box having the above-described structure, since the return box is composed of the rectangular tubular portion having the corner members at the four corners and the folded portion connected to the lower end of the tubular portion, the present invention is not applicable. At the time of use, by folding the folded portion, the whole volume is reduced, and it can be stacked and transported in multiple stages, so that the transport efficiency can be improved.

Further, when the side plate is divided in the height direction and connected to each other by a hinge, and the box is folded inward, when the depth of the box, that is, the height of the side plate is longer than the short side of the bottom plate, However, when the opposing side plates are folded, the two side plates that have been folded overlap each other, and the fit of the side plates after folding becomes poor. On the other hand, conventionally, the length after folding was reduced by increasing the number of divided side plates, but there was a problem that the number of parts such as hinges increased, and the number of assembling steps and costs increased.

Therefore, in the present invention, by providing a rectangular cylindrical portion at the top, the height of the side plate divided into two is suppressed to within the short side dimension of the bottom plate, and the number of divisions is suppressed, and the accommodation of the side plate after folding is good. It is possible to suppress the increase in height after folding to an acceptable range,
Therefore, even when a deep box is required, dimensional correspondence can be easily performed. In this way, a sturdy box with few components such as bent hinges can be obtained, and the rectangular tubular portion can be used as a storage space for packing materials and the like when returned.

<< Embodiment >> Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 to 7 show one embodiment of a return box according to the present invention.

As shown in FIG. 1, the return box shown in this embodiment has a rectangular tubular portion 10 provided on the upper side and a folding portion provided integrally with the lower end of the tubular portion 10. 12
It is composed of

The rectangular cylindrical portion 10 has a long side length and a short side length of approximately 2:
1 is formed, and both ends in the vertical direction are open,
It has four face plates 10a around which a vertical reinforcing frame A and a horizontal reinforcing frame B are fitted.

L-shaped corner members 14 are fitted to the four corners where the side plates 10a are joined so as to extend between the vertical and horizontal reinforcing frames A and B of the adjacent side plates 10a. At the upper end of the member 14, L-shaped projections 14a are respectively provided to protrude.

On the other hand, the folded portion 12 has a bottom plate 16 having the same planar shape as the rectangular tubular portion 10, a pair of side plates 18 arranged at a lower portion in the longitudinal direction of the tubular portion 10, and a lower portion in the short direction of the tubular portion 10. And a pair of tilt plates 20 to be arranged.

Each side plate 18 is composed of two upper and lower divided side plates 18a and 18b divided into two in the vertical direction.
A vertical reinforcing frame A and a horizontal reinforcing frame B are fitted and fixed to the four circumferences of 8a, 18b, the bottom plate 16, and the tilt plate 20, respectively.

And, between the horizontal reinforcing frames B of the upper and lower divided side plates 18a and 18b, between the horizontal reinforcing frame B on the upper end side of the upper plate 18a and the horizontal reinforcing frame B on the lower end side of the face plate 10a of the tubular portion 10, a tilt plate Between the horizontal reinforcing frame B on the upper end side of 20 and the horizontal reinforcing frame B on the lower end side of the face plate 10a of the tubular portion 10, and the horizontal reinforcing frame B on the lower end side of the lower divided side plate 18b and the horizontal reinforcing frame B on the bottom plate 16; The spaces are connected via hinge portions 22, respectively.

FIG. 2 shows the details of the hinge portion 22. FIG. 2A shows a state between the upper and lower split side plates 18a and 18b, and the hinge portion 22 is vertically split on a longitudinal axis. Along the dividing lines of the upper and lower divided side plates 18a, 18b, a flexible synthetic resin is co-extruded together with the reinforcing frame B so as to straddle between the horizontal reinforcing frames B, and these are joined.

Also, what is shown in FIG. 2 (B) is a hinge portion 22 provided between the bottom plate 16 and the lower divided side plate 18b. In this example, the horizontal reinforcing frame B on the bottom plate 16 side is formed of the side plate 18b. It is formed in a shape protruding upward at a height substantially equal to the thickness, and is integrally formed with the reinforcing frame B at the hinge portion 22 by coextrusion between the reinforcing frames B in the same manner as described above.

It should be noted that only the hinge portion 22 provided between the divided side plates 18a and 18b is provided on the front side, and the other portions are provided on the back side.

Further, a rigid plastic support hinge 24 shown in FIG. 3 is connected between the vertical reinforcing frames A of the upper and lower divided side plates 18a and 18b so that each of the upper and lower divided side plates 18a and 18b can be folded inward in a folded state. Is configured.

This plastic support hinge 24 has a hinge structure in which two plastic molded bodies 24a and 24b are engaged with pins 24c, and cuts off corners of upper and lower plates 18a and 18b.
The molded bodies 24a and 24b are fitted into the cutout portions.

Each molded body 24a, 24b has a fitting portion 24d to the lateral reinforcing frame B,
The fitting portion 24e to the vertical reinforcing frame A is formed integrally, and at least one of the fitting portions 24d is provided with a through hole 24f, through which a rivet 24g is inserted to insert the vertical reinforcing frame A and the divided side plate. 18
Integrated with a and 18b.

On the other hand, as shown in FIG. 4 (A), each tilt plate 20 and the bottom plate 16 are key-shaped parts which are mutually connected to a horizontal reinforcing frame B below the tilt plate 20 and a vertical reinforcing frame C of the bottom plate 16. And tilt plate 20
When this is turned inward, this engaged state is released and the bottom plate
Separate from 16.

As shown in FIG. 4 (B), the upper and lower divided side plates 18a, 18b and the tilting plate 20 are provided with a key-shaped engaging portion between the vertical reinforcing frames A, A as shown in FIG. When the pivot plate 20 is rotated inward in the same manner as described above, the engaged state is released.

As shown in FIG. 5, bottom corners 26 are fixed to the four corners of the bottom plate 16, and the lower divided side plate 18b, the reinforcing frames A of the bottom plate 16,
The gap created by the connection with B and the like is complemented, and fluttering is prevented when the tilt plate 20 is assembled.

The bottom corner 26 is a vertical (short side) reinforcing frame A of the bottom plate 16.
The protruding pieces 26a and 26b formed integrally with the bottom corner 26 are fitted between the reinforcing frame B and the lateral (long side) reinforcing frame B.

The bottom corner 26 has a built-in protruding piece 26d constantly biased in a protruding direction by a spring 26c, and rotates the tilting plate 20 to indent the protruding piece 26d against the urging force of the spring 26c. Then, when the tilt plate 20 is brought into contact with the vertical reinforcing frame A of the bottom plate 16, the protrusion 26
d is again projected by the urging force of the spring 26c, and has a stopper function of contacting the inner surface of the tilt plate 20 to prevent it from returning inward.

Now, in the return box of the present embodiment configured as described above,
If the tilt plate 20 is rotated to engage with the protruding piece 26d of the bottom corner 26, and its side and bottom sides are respectively engaged via the key-shaped portions as shown in FIG. A box as shown in FIG. 1 having an open upper end is assembled.

In this case, the horizontal reinforcing frames B, B of the lower divided side plate 18b and the bottom plate 16
Since the parts except the space are engaged with each other by fitting and keying, the linearity of the box is ensured, and the load on the hinge part 22 is reduced when storing items are inserted, improving the durability I do.

Then, as shown in FIG. 6, the assembled box first releases the engagement between the tilt plate 20 and the bottom plate 16, rotates the tilt plates 20 upward, respectively, and makes them substantially parallel to the bottom plate 16, Thereafter, if the upper and lower split side plates 18a and 18b are folded inward, the lower split side plate 18b, the upper split side plate 18a and the tilt plate 20 can be folded on the bottom plate 16 in this order. The square tubular portion 10 is placed on the folded state (see FIG. 7).

At this time, corner members 14 are provided at the four corners of the rectangular cylindrical portion 10, and the corner members 14 have L-shaped projections.
Since the protrusions 14a are provided, the movement of the stacked bottom plates on the upper stage side is regulated by the protrusions 14a, and the stacked bottom plates can be stably stacked.

The number of divisions of the side plate 18 shown in the above embodiment is not limited to two, and may be more.

The height of the cylindrical portion 10 depends on the relationship between the width and depth required for the box during assembly and use, and the side plate of the folded portion 12.
The number is appropriately determined by the number of divisions of 18, and for example, for example, only the reinforcing frames A and B may be used without using the face plate 10a in the above embodiment.

Further, the shape of the projection 14a is not limited to the L-shape. The shape of the projection 14a is not limited as long as it can be engaged in two directions on the outer periphery of the stacked bottom plates. Corner material
14 may be attached or adhered.

As described above, the returnable box according to the present embodiment is a completely rectangular box having a corner member at the top, which is completely different from a conventional foldable box which is configured to be folded from the upper frame or the bottom. Since a bottom part is provided and a folding part is provided at the lower end, it is easy to respond to dimensions when a deep bottom box is required, and also in return transportation as a return box or storage when not in use, This is extremely practical, as packing materials and the like can be stored in the rectangular cylindrical portion.

[Brief description of the drawings]

FIG. 1 is a perspective view of a box according to the present invention in an assembled state, FIG. 2 is an explanatory view of a hinge portion, FIG. 3 is an explanatory view of a hinge column, and FIG. 4 is engagement of a tilt plate with a side plate and a bottom plate. FIG. 5 is an explanatory view of the arrangement state of the bottom corner, FIG. 6 is an explanatory view of the folding process of the box, and FIG. 7 is an explanatory view of the completed folding state. 10… Square tubular part 12… Folding part 14… Corner member 16… Tilt board 18… Side plate 20… Tilt board 22… Hinge part 24 …… Hinge pillar

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Nobuo Ito 5-1313 Hara, Tempaku-ku, Nagoya City, Aichi Prefecture (72) Toshio Fukumitsu 971-7 Kamiochiai, Yono-shi, Saitama (56) References JP-A 64-37345 (JP, A) JP-A-62-158686 (JP, A) JP-A-61-127436 (JP, A) JP-A-59-199443 (JP, A) JP-A-61-11523 (JP, U) Kaihei 2-11031 (JP, U)

Claims (1)

(57) [Scope of request for utility model registration] 1. A returnable box having a rectangular tubular portion provided on an upper side and a folded portion integrally provided at a lower end of the tubular portion, wherein the tubular portion has a vertical shape around four sides. It has four non-collapsible face plates fitted with a horizontal reinforcing frame, and an L-shaped integral corner member is fixed to four corners at its upper end. A pair of side plates and a tilting plate having an upper end hinged to a lower end of the portion, and a bottom plate hinged to the lower end of the side plate, wherein the side plate is vertically divided into at least two parts, and And a reinforcing frame that can be engaged with a reinforcing frame of the tilting plate during assembly is fixed to the side plate and the bottom plate.