JP4418125B2 - Folding storage box - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a structure capable of compactly folding a folding storage box used for transportation and storage of articles.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, for example, a foldable storage box having an open top is used to store mechanical parts.
This foldable storage box is assembled as a storage box when storing parts, but when the parts are taken out, the inside becomes empty, so that the storage box is folded and stacked so as not to be bulky Yes.
As this folding structure, for example, the side wall is flipped up with the upper edge end of the peripheral wall on the short side as a fulcrum and folded sideways with the peripheral wall on the long side, or the four side walls are centered on the bottom wall. A structure that is unfolded and folded is known.
However, in the above structure, even though it can be folded, many of them require a folding area larger than the area of the bottom wall, which is still not sufficient in terms of space efficiency when mounted on a vehicle or stored.
Therefore, in order to fit within the area of the bottom wall, a structure in which the middle stage of the four side walls is folded inward and folded inward is used, but there is a problem that the total height after folding is high.
In addition, when a corner member to be engaged and disengaged is provided, there is a drawback that the protruding portion of the engaging projection part interferes with other members when folded, and in order to avoid this, a corresponding part of the interfering member is provided. It was necessary to make a notch.
[0003]
[Problems to be solved by the invention]
The present invention was devised in view of the above circumstances, and its main problem is to transport and store empty boxes by folding the four side walls inward and folding them on the bottom wall when the interior is empty. An object of the present invention is to provide a foldable storage box with improved space efficiency.
Still another object of the present invention is to provide a foldable storage box in which the engaging projections of the corner member to be engaged / disengaged do not disturb the folding and do not narrow the opening of the storage box.
[0004]
[Means for Solving the Problems]
In order to achieve the above object, according to the present invention,
Side walls are arranged opposite each other along the four sides of the bottom wall, and one opposing side wall is sandwiched between the other opposing side walls to form a box shape, and each side wall is connected to the bottom wall by a folding frame that serves as a hinge. The folding frame allows the side wall to be folded inside the bottom wall, and a detachable engaging projection constituting a corner member is formed on the outer side wall at the upper part of the corner formed between the adjacent side walls. In the folding storage box in which the engagement receiver is provided on each of the inner side walls,
The bending position of the hinge by the bending frame body is set higher than the side wall on the outside by a length equal to or more than the thickness of the side wall, and
The engagement receiver includes a hooking hole that opens in a side portion that contacts an adjacent outer side wall, and a folding type that is orthogonal to the opening direction of the hole portion through a constraining wall that constitutes the side portion. A recess that opens toward the inside of the storage box is provided.
The engaging protrusion protrudes perpendicularly inwardly from the side wall to which the engaging protrusion is attached and can be fitted into the hole, and is urged so as to be returned along the side wall and slides. In addition, a technical means is provided that includes a locking portion that enters the recess and locks the restraining wall.
In the invention of claim 2,
The bottom wall is formed in a rectangular shape, the short side wall is arranged along the short side, the long side wall is arranged along the long side, and the box is sandwiched between the short side walls. Become
Engagement receivers are provided at both ends of the upper edge of the short side wall,
Technical measures are taken such that engaging projections are provided at both ends of the upper edge of the long side wall.
Furthermore, in the invention of claim 3,
Technically, a lower corner member is provided at the lower part of the corner formed between adjacent side walls, which is fixed to the bottom wall side and serves as a guide when stacking the folded folding storage box. Take measures.
[0005]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, a preferred embodiment of the folding storage box of the present invention will be described with reference to the drawings.
As shown in FIGS. 1 to 3, the folding storage box includes a pair of long side walls 2 facing along the long side of the rectangular bottom wall 1 and a pair of short side walls facing along the short side. 3 constitutes a quadrangular wall, and the long side wall 2 constitutes a box body whose upper side is opened with the short side wall 3 sandwiched from both sides.
[0006]
Here, the said bottom wall 1, the long side wall 2, and the short side wall 3 are comprised from the synthetic resin panel.
As this synthetic resin panel, in this embodiment, for example, a hollow panel that is formed by extrusion molding of polypropylene resin and includes a large number of hollow portions formed to extend in the extrusion direction is used. A known panel may be used.
[0007]
In the case of the present embodiment, the bottom wall 1 is formed in a cross-sectional angle shape in which the longitudinal side is folded at a right angle on both the left and right sides and a rising piece 1a is provided.
The end of the rising piece 1 a of the bottom wall 1 and the lower end of the long side wall 2 are connected to each other by a first folding frame 4 so as to be bent.
As shown more clearly in FIG. 7, the first folding frame 4 includes a first side wall lower frame portion 43 that fits and fixes a lower end portion of the long side wall 2, and an end portion of the rising piece 1 a of the bottom wall 1. The first bottom wall frame body 41 is fitted and fixed, and the first bottom wall frame body 41 and the first side wall lower frame portion 43 are connected to each other in a flexible manner. .
[0008]
That is, the first side wall lower frame portion 43 and the first bottom wall frame portion 41 both have channel-shaped grooves, and extend in a series along the longitudinal direction of the bottom wall 1.
The first side wall lower frame portion 43 and the first bottom wall frame portion 41 are connected to each other by a synthetic resin film that becomes the first hinge portion 42 and is folded using the first hinge portion 42 as a bending fulcrum. Sometimes, the long side wall 2 can be folded down toward the inside of the bottom wall 1.
[0009]
Next, the end in the short direction of the bottom wall 1 and the lower end of the short side wall 3 are connected to each other by a second folding frame 5 so as to be freely bent.
As shown more clearly in FIG. 8, the second folding frame 5 includes a second side wall lower frame portion 53 that fits and fixes the lower end of the short side wall 3, and an end portion of the bottom wall 1 in the short direction. The second bottom wall frame 51 to be fitted and fixed, and the second side wall lower frame portion 53 and the second bottom wall frame portion 51 are connected to each other so as to be bent.
[0010]
That is, the second side wall lower frame portion 53 and the second bottom wall frame portion 51 are both formed of a channel-shaped groove, and extend in a series along the short direction of the bottom wall 1.
The second side wall lower frame portion 53 and the second bottom wall frame portion 51 are connected to each other by a synthetic resin film that becomes the second hinge portion 52, and are folded using the second hinge portion 52 as a bending fulcrum. Sometimes, the short side wall 3 can be folded down toward the inside of the bottom wall 1.
[0011]
Therefore, the bending position of the first hinge part 42 by the first folding frame body 4 on the long side wall 2 side is more than the bending position of the second hinge part 52 by the second bending frame body 5 on the short side wall 3 side. Since the height of the rising piece, in this embodiment, the thickness on the short side wall 3 side when folded, i.e., the length including the thickness of the engagement receiving portion described later is set higher than the length, When the short side wall 3 is folded, the uppermost surface thereof is set so as not to protrude beyond the height of the rising piece 1a.
[0012]
Next, the long side wall 2 is fitted and fixed to the first vertical reinforcing frame 21 having a cross-sectional channel shape along the left and right ends in the lateral direction, and the cross-sectional channel is formed along the upper end in the longitudinal direction. A first horizontal reinforcing frame 6 is fitted and fixed, and the periphery of the long side wall 2 is reinforced by the frame together with the first bent frame 4.
Further, the short side wall 3 is fitted and fixed so as to oppose and fix the second longitudinal reinforcing frame 31 having a cross-sectional channel shape along the left and right lateral ends, and has a cross-sectional channel shape along the upper end in the longitudinal direction. The second lateral reinforcing frame 7 is fitted and fixed, and the periphery of the short side wall 2 is reinforced with the frame together with the second bent frame 5.
These frames and the corner members described later are made of a hard synthetic resin material that is injection-molded or extruded in the case of this embodiment.
[0013]
Further, at each corner portion on the upper end side where the long side wall 2 and the short side wall 3 are orthogonally contacted with each other, both are connected to form a box shape, and the connection is released and the engaging protrusion can be folded. And a corner member 8 made of a combination of engagement receivers.
That is, the corner member 8 includes an engaging protrusion 60 that is fixed at a position where the first horizontal reinforcing frame 6 and the first vertical reinforcing frame 21 intersect at the end of the upper edge of the long side wall 2 in the longitudinal direction, It comprises an engagement receiver 70 disposed at a position where the second horizontal reinforcing frame 7 and the second vertical reinforcing frame 31 intersect at the end of the upper edge of the short side wall 3 in the longitudinal direction.
[0014]
That is, the engagement receptacle 70 attached to the short side wall 3 is provided with a pair of upper and lower holes 73 and 74 for latching on the side part in contact with the adjacent outer long side wall 2 (FIGS. 2a and 6). reference).
Further, a recess 72 is formed on the inner surface side orthogonal to the hole portions 73 and 74 of the engagement receiver 70 through a constraining wall 75 constituting the side portion.
[0015]
On the other hand, the engaging protrusion 60 shown in FIGS. 5 and 6 protrudes inward from the wide surface side of the long side wall 2 to which the engaging protrusion 60 is attached, and fits into the holes 73 and 74. It has a pair of upper and lower projections 63 and 64 that can be used.
Further, the engaging protrusion 60 is disposed in the longitudinal direction of the long side wall 2 between the protrusions 63 and 64, and is urged and slidable along the long side wall 2 to slide into the recess 72. A slide plate 80 for locking the restraint wall 75 is provided.
Here, the slide plate 80 has a collar portion 81 at the tip, and extends in a double manner divided inside and outside, and a finger hook portion 83 for unlocking operation projects from the outer piece 82.
Further, the pin P spanned between the inner piece 84 and the outer piece 82 is fitted to the slider 85, and the slider 85 has a base end engaged in the engaging projection 60. It is connected to the tip of the stopped coil spring C so that it can slide in the forward / backward direction in the guide hole G, and the slide plate 80 is always urged in its extending direction (lock direction).
[0016]
Due to the above configuration, when assembling the storage box by locking the engagement receiver 70 and the engagement projection 60, first, the long side walls 2 and the short side walls 3 are raised, and the long side walls 2 The protrusions 63 and 64 of the engagement protrusion 60 provided on the side are inserted into the latching hole portions 73 and 74 of the engagement receiver 70 on the short side wall 3 side (see FIG. 6).
Similarly, the tip of the locking claw portion 81 of the slide plate 62 abuts with the restraining wall portion 75 that forms the concave portion 72 of the engagement receiver 70 (see FIG. 6A), and is further folded down. As a result, the slide plate 80 moves backward in the unlocking direction against the urging force via the locking claw portion 81 (see FIG. 6B).
As a result, when the front end of the locking claw portion 81 gets over the restraint wall portion 75, the slide plate 80 is biased in the locking direction by the biasing force and enters the recess 72 to restrain the restraint wall portion 75.
[0017]
At this time, in this embodiment, since the notch 76 is formed by cutting out the tip portion over which the locking claw 81 of the restraining wall 75 rides, the locking claw 81 is inserted into the back of the recess 72. Thus, it is possible to completely immerse in the recess 72 (see FIG. 6 (c)). Can do.
In this way, the box assembly of the folding storage box is completed.
[0018]
A first corner abutment plate 61 that extends outward and covers the end of the first lateral reinforcing frame 6 in the thickness direction at an outer position than the first lateral reinforcing frame 6 is integrally formed on the upper portion of the engaging projection 60. The first corner abutment plate 61 is formed in a substantially angled cross section, and a step portion is integrally formed on the first lateral reinforcing frame 6.
In addition, the engagement receiver 70 is integrally formed with a second corner abutment plate 71 that expands outward on the upper portion thereof, covers the outer side of the second lateral reinforcing frame 7, and forms a step on the second lateral reinforcing frame 7. Is formed.
The first corner abutment plate 61 and the second corner abutment plate 71 are combined to form a substantially L-shaped wall surface and a stepped portion, and positioning and hooking when stacking the assembled folding storage box. It is a stopping means.
[0019]
An engaging projection 60 shown in FIG. 11 shows a different embodiment of the slide plate 80.
In this case, the collar portion 81 is formed so as not to protrude from the back of the neck and protrude into the box. In this case, too, the notch portion 76 is provided on the restraint wall 75 so that the position where the collar portion 81 gets over is shifted outward. By doing so, the flange 81 can be immersed in the recess 72.
Since other configurations are the same as those in the above embodiment, the description thereof is omitted.
[0020]
Next, with respect to the folding of the storage box, the bending position of the first hinge part 42 by the first folding frame body 4 is changed from the bending position of the second hinge part 52 by the second folding frame body 5 as described above. Since the length of the first hinge portion 42 is set to be higher than the uppermost surface of the short side wall 3 when the short side wall 3 is folded. (See FIG. 3B).
Thus, the long wall 2 can be folded inward with the first hinge portion 42 as a bending point so that the long side wall 2 is placed on the short side wall 3 (see FIG. 2B).
[0021]
Thereby, the box body in a state where the four side walls are folded by the above procedure has a thickness in which the bottom wall 1, the long side wall 2, and the short side wall 3 are closely adhered and stacked when viewed from the side.
Further, when viewed from the top, the four side walls are folded within the dimensions of the bottom wall, so that the volume is extremely compact.
[0022]
In the case of the present embodiment, a lower corner member 90 is fixed to the bottom wall 1 at a lower portion of a corner formed between the adjacent long side wall 2 and the short side wall 3.
The lower corner member 90 is a bottomed member having a peripheral wall having an L-shaped cross section, and is externally fitted to the lower portion of the corner and fixed to the bottom wall 1 and the first bottom wall frame 41.
And the upper part of this lower corner member 90 is expanded in steps, and forms the step part 91 along a surrounding wall.
Therefore, the long side wall 2 and the short side wall 3 can be freely folded, and in this folded state, the step 91 of the lower corner member 90 is disposed at a height equal to or higher than the uppermost surface of the folded long side wall 2. The
Accordingly, since the lower corner member 90 serves as a positioning guide for stacking, the bottom portion of the lower corner member 90 of another folded folding storage box can be hooked on the stepped portion 91 and sequentially stacked. (See FIGS. 9 and 10).
[0023]
This foldable storage box can be recycled without hindrance by molding the bottom wall, long side wall, and short side wall with a hollow synthetic resin panel and using polypropylene resin for the frame and corner members, for example. become.
Moreover, in the said Example, although the case where the storage box was a rectangular parallelepiped shape which makes a bottom wall a rectangle was illustrated, the case of the cube shape made into a square may be sufficient.
The present invention is not limited to the embodiment described above, and can be arbitrarily changed in design according to the application.
[0024]
【The invention's effect】
The foldable storage box of the present invention can be folded as compactly as possible when it is not in use, and can be stored in a plate and stacked on a pallet for storage and transportation. Such space and cost can be saved significantly.
In addition, since the inside of the empty box can be prevented, the inside of the box can be kept clean.
Further, since the bent frame body serving as the hinge does not interfere with the engaging projection, it is not necessary to provide a notch in the frame body.
Further, by providing the lower corner portion, the storage boxes can be stacked in multiple stages in a folded state.
If all of the bottom wall, short side wall, long side wall, frame and corner member are molded from a single material, recycling can be performed without any problem after batch crushing even when the storage box is used up and finally disposed. It has excellent advantages in terms of environmental protection.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an embodiment of a folding storage box according to the present invention.
FIG. 2A is a cross-sectional view of the storage box in the short direction, and FIG. 2B is a cross-sectional view in the folded state.
3A is a sectional view in the longitudinal direction of the storage box, and FIG. 3B is a sectional view in the folded state.
FIG. 4 is a front view of an engaging protrusion.
FIG. 5 is a cross-sectional view of a main part showing an engagement protrusion and an engagement receiver.
FIGS. 6A to 6C are cross-sectional views illustrating the engagement state of the engagement protrusion and the engagement receiver in stages.
FIG. 7 is a cross-sectional view showing a first folding frame.
FIG. 8 is a cross-sectional view showing a second folding frame.
FIG. 9 is a cross-sectional view in a short direction showing a stacking state of a storage box in a folded state.
FIG. 10 is a longitudinal sectional view showing a stacking state of the storage box in a folded state.
FIG. 11 is a cross-sectional view showing different embodiments of the flange portion of the slide plate of the engaging protrusion.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Bottom plate 1a Standing piece 2 Long side wall 3 Short side wall 4 1st bending frame body 5 2nd bending frame body 6 1st horizontal reinforcement frame 7 2nd horizontal reinforcement frame 8 Corner member 21 1st vertical reinforcement frame 31 2nd vertical Reinforcing frame 41 First bottom wall frame 42 First hinge portion 43 First side wall lower frame portion 48 Through cutout portion 51 Second bottom wall frame body 52 Second hinge portion 53 Second side wall lower frame portion 60 Engaging protrusion 61 First corner abutment plate 63, 64 Protrusion 70 Engagement receiver 71 Second corner abutment plate 73, 74 Hole 75 Restraint wall 76 Notch 80 Slide plate 81 Hook 83 Finger rest 90 Lower corner member 91 Step

Claims (3)

Side walls are arranged opposite each other along the four sides of the bottom wall, and one opposing side wall is sandwiched between the other opposing side walls to form a box shape, and each side wall is connected to the bottom wall by a folding frame that serves as a hinge. The folding frame allows the side wall to be folded inside the bottom wall, and a detachable engaging projection constituting a corner member is formed on the outer side wall at the upper part of the corner formed between the adjacent side walls. In the folding storage box in which the engagement receiver is provided on each of the inner side walls,
The bending position of the hinge by the bending frame body is set higher than the side wall on the outside by a length equal to or more than the thickness of the side wall, and
The engagement receiver includes a hooking hole that opens in a side portion that contacts an adjacent outer side wall, and a folding type that is orthogonal to the opening direction of the hole portion through a constraining wall that constitutes the side portion. A recess that opens toward the inside of the storage box is provided.
The engaging protrusion protrudes perpendicularly inwardly from the side wall to which the engaging protrusion is attached and can be fitted into the hole, and is urged so as to be returned along the side wall and slides. And a foldable storage box, wherein the foldable storage box includes a locking portion that enters the recess and locks the restraining wall. The bottom wall has a rectangular shape, the short side walls are arranged along the short sides, and the long side walls are arranged along the long sides so that the box is sandwiched between the short sides. ,
Engagement receivers are provided at both ends of the upper edge of the short side wall,
The folding storage box according to claim 1, wherein engagement protrusions are provided at both ends of the upper edge of the long side wall. The lower corner member formed between adjacent side walls is provided with a lower corner member that is fixed to the bottom wall side and serves as a guide when stacking the folded folding storage box. The foldable storage box according to claim 1 or 2.

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