JPH07257570A - Folding container - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a folding container which has sufficient strength even when the tilting plate is opened and which allows easy assembly and folding of the container. [Structure] A bottom plate 1 and a top plate 2, a pair of foldable side plates 3, and a pair of tilt plates 4 which are slidably housed in the top plate 2 and are rotatable when pulled out. In the folding container, a pair of upper and lower side columns 31 are attached to the bottom plate 1 and the top plate 2 so that the side plates 3 are rotatable, and are connected by a connecting portion 35 so as to be bent inward. , A wall plate 32 rotatably attached to the bottom plate 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a foldable container, and more particularly to a foldable container for accommodating, storing, transporting and carrying various items.

[0002]

2. Description of the Related Art Conventionally, folding containers having various structures have been widely used, for example, Japanese Patent Laid-Open No. 1-213146.
Japanese Patent Laid-Open Publication No. 2004-242242 discloses a folding container provided with a bottom plate and a top plate, a pair of foldable side plates, and a pair of tilt plates that are slidably housed in the top plate and that are rotatable when pulled out. Is listed.

The side plate of the folding container is composed of an upper plate rotatably attached to both side edges of a top plate and a lower plate rotatably attached to both side edges of a bottom plate,
The lower end of the upper plate and the upper end of the lower plate are connected by a connecting portion so as to bend inside the container.

Further, the tilt plate is slidably attached along guide portions provided on both side edges of the lower surface of the top plate so as to be accommodated therein, and is formed so as to be rotatable downward in a state where the tilt plate is pulled out. There is.

To assemble the above-mentioned folding container, after raising the top plate and extending the side plates, the tilting plate stored on the lower surface of the top plate is pulled out and set up at a right angle to the bottom plate.
This is done by fixing the lower edge of the tilt plate to the upper edge of the end of the bottom plate, and conversely, after accommodating the tilt plate on the lower surface of the top plate, bending the connecting part of the side plate toward the inside of the container. By this, it can be folded.

[0006]

Since the folding container having the above structure has the hinge portions at the upper and lower sides and the middle portion of the side plate, it may be bent and damaged when a large force is applied from above. In particular, since the storage and removal of the items are performed with the swing plate open, there is a problem with the buckling strength at this time. For this reason, a stopper (fixing metal fitting) is provided at the connecting portion of the side plate for holding and fixing the side plate in an extended state. However, in the case of a large container, the entire side plate including the side plate is inevitably large and heavy. Therefore, it is inevitable that the fixing bracket will be large and solid. In addition, since the side plates become large and heavy, a considerable amount of labor is required to lift and lower the side plates when folding and assembling the container. Furthermore, when the wall thickness of the container does not have a sufficient space, it is difficult to provide a stopper having a necessary strength, and rattling cannot be prevented.

Therefore, an object of the present invention is to provide a folding container which has a sufficient strength even when the tilting plate is opened and which allows easy assembling and folding of the container.

[0008]

In order to achieve the above object, the folding container of the present invention comprises a bottom plate and a top plate, a pair of foldable side plates, and a slide storage in the top plate, and In a folding container provided with a pair of tilt plates that are rotatably provided when pulled out, the side plates are rotatably attached to each of the bottom plate and the top plate, and are bent inward at a connecting portion. It is characterized in that it is constituted by a pair of upper and lower side pillars connected as described above and a wall plate rotatably attached to the bottom plate or the top plate.

Further, in the folding container according to the present invention, the side pillar is provided with a fixing metal fitting at a connecting portion thereof to prevent bending when the connecting pillar is extended and the side pillar is erected. The wall plate and the side pillars are provided with a fixing member that engages and fixes the wall plate and the side pillars when the wall plate and the side pillars are erected. The swing plate is provided with an engaging portion for engaging and fixing both when closed, the guide plate is provided on both sides thereof with guide ridges guided by rail grooves provided on both sides of the lower surface of the top plate, The side plate is provided with fitting grooves on both end faces thereof into which the guide ridges are fitted, and the swing plate is mounted such that a rotary mounting portion with the top plate is vertically movable. The bottom plate is
The wall plate is provided with a locking portion that locks the bottom side, the wall plate is mounted such that the mounting portion with the bottom plate or the top plate is vertically movable, and the side pillar is erected. At this time, an auxiliary column for holding the side column in an upright state is rotatably attached to the bottom plate or the top plate.

[0010]

[Operation] According to the above configuration, when assembling and folding the container, it is sufficient to lift and lower the side pillar and the wall plate separately, so that it can be performed with a light force. Further, since the wall plate is present between the bottom plate and the top plate during assembly, the vertical load can be supported by the wall plate.

Further, by providing the fixing member at the connecting portion of the side pillar, the side pillar can be securely fixed in the extended state, and by providing the fixing member for engaging and fixing the wall plate and the side pillar. The wall plate and the side pillars when assembling the container can be integrated to prevent bending of the side pillars and improve the strength of the side plates. Further, an engaging portion that engages and fixes the side plate and the swing plate when the side plate is erected and the swing plate is closed, for example, a fitting groove into which a guide ridge for storage provided on the swing plate fits By providing it on the end face, the strength of the container can be further improved.

By making the swing plate movable up and down, and by locking the bottom side of the swing plate with the locking portion of the bottom plate, the closed state of the swing plate can be reliably held, and the mounting portion of the wall plate can be moved up and down. By doing so, when the wall plate is rotated along the bottom plate or the top plate to fold the container, one wall plate and the other wall plate can be folded and stacked in any order. Further, by providing the auxiliary column that holds the side column in the upright state, the side column can be fixed more reliably.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will now be described in more detail based on an embodiment shown in the drawings. Each of the drawings shows one embodiment of the folding container of the present invention. Fig. 1 is a perspective view of the container in the process of assembly, Fig. 2 is a partially sectional front view, and Figs. FIG. 3 is a sectional view showing a metal fitting, and FIG. 3 is a non-fixed state and FIG. 4 is a fixed state. 5 and 6 show a fixing member for fixing the wall plate and the side pillar,
FIG. 5 is a front view and FIG. 6 is a sectional view. FIG. 7 is a side view showing the tilting plate housed in the top plate and showing an engaging portion provided on the side pillar, and FIG. 8 is a cross-sectional view showing the engaging state of the tilting plate and the side pillar. 9 is a cross-sectional view of the swing plate in a closed state, FIG. 10 is a cross-sectional view showing a mounting portion between the wall plate and the bottom plate, and FIG.
1 is a partial cross-sectional side view showing an example of an auxiliary column.

First, as shown in FIGS. 1 and 2, the folding container according to this embodiment has a rectangular bottom plate 1 and a top plate 2 of substantially the same size, and the bottom plate 1 and the top plate 2 face each other. It is composed of a pair of side plates 3 respectively provided on the long sides and a pair of tilt plates 4 respectively provided on the opposite short sides.

The side plate 3 is composed of side columns 31 provided at the four corners of the bottom plate 1 and the top plate 2, and wall plates 32 provided between the side columns 31, and the lower edge of the wall plate 32 is formed. Is rotatably attached to the end edge of the bottom plate 1, and is formed so as to be overlapped and folded on the upper surface of the bottom plate 1.

The side pillar 31 rotatably connects a lower pillar 33 rotatably attached to the bottom plate 1 and an upper pillar 34 rotatably attached to the top plate 2 with a connecting portion 35. However, the connecting portion 35 is formed so that it can be bent only inside the container.

The tilt plate 4 is formed so that it can be stored on the lower surface of the top plate 2 by sliding along the guide rails 21 provided at both ends of the lower surface of the top plate 2, and at the same time, the top plate 2 can be stored. It is formed so that it can be rotated downward in the state of being pulled out from the lower surface of the.

That is, this folding container has a top plate 2.
After raising the side pillar 31 to the extended state, the wall plate 32
Is erected between the bottom plate 1 and the top plate 2 to form the side plate 3,
Then, the tilting plate 4 housed on the lower surface of the top plate 2 can be pulled out and rotated downward to assemble,
On the contrary, after accommodating the tilt plate 4 on the lower surface of the top plate 2, the wall plate 3
It can be folded by folding 2 on the bottom plate 1 and bending the connecting portion 35 of the side pillar 31 toward the inside of the container.

This assembling and folding work may be performed by lifting or lowering the side pillars 31 and the wall plates 32 separately, so that they are performed with a lighter force than in the case of lifting or lowering the entire side plate 3. be able to.

Further, at the time of assembly, the wall plate 32 is present between the bottom plate 1 and the top plate 2, and the wall plate 32 receives a vertical load, so that the force in the bending direction applied to the side column 31 is reduced. It is possible to improve the buckling strength of the container.

In this embodiment, the side pillars 31 are provided at the four corners of the container and the wall plates 32 are arranged between them. However, the arrangement of the side pillars 31 and the wall boards 32 depends on the size of the container. It can be set appropriately. For example, side pillars may be provided in the central portion and the wall plates may be arranged on both sides thereof, and the side pillars may be provided in three places of both corners and the central portion and between them. You may make it respectively provide a wall board. Furthermore, when the width of the wallboard is large, such as in a large container, the wallboard can be divided into a plurality of pieces in the width direction to reduce the weight of the wallboard, and the wallboard can be folded toward the top board 2 side. It can also be folded.

Further, the connecting portion 35 of the side pillar 31 is provided with a fixing metal fitting 36 for extending the connecting portion 35 and fixing the side pillar 31 in an upright state. As shown in FIGS. 3 and 4, the fixing metal fitting 36 is provided so as to be vertically slidable in a guide groove 34a formed in the upper pillar 34, and the fixing metal fitting 36 is not shown in FIG. Slide down from the fixed state so that the bolt 36a at the tip of the fixing metal fitting is formed in the lower column 33 in the guide groove 33a.
By inserting into the inside, the lower pillar 33 and the upper pillar 34 can be fixed without rattling, and the upper and lower pillars are connected to each other by the connecting portion 3.
It is possible to prevent bending at 5.

Fixing fitting 3 for fixing the upper and lower pillars in this way
By forming 6 into a plate shape, the upper and lower side columns can be fixed within the space of the plate thickness of the side column 31, and even if the plate thickness of the side column 31 is thin, the area of the barb 36a can be increased. Can obtain sufficient strength.

Further, in the folding container shown in this embodiment, the side pillar 31 in the extended state and the wall plate 32 in the raised state.
A fixing member 37 for connecting and fixing and is provided. This fixing member 37, as shown in FIGS.
It is provided so as to be slidable in the lateral direction in the slit 32a formed at the edge portion of the fixing member 37, and the hollow portion 37a at the tip of the fixing member 37 connects the lower column 33 and the upper column 34 to each other.
It is formed so as to fit into the fixed groove 35a formed in No. 5.

Therefore, the side pillar 31 is extended and erected,
When the wall plate 32 is raised, the fixing member 37 is slid in the direction of the side pillar 31 to engage the hole 37a and the fixing groove 35a, so that the lower pillar 33, the upper pillar 34, and the wall board 32 are separated from each other. It can be integrated, and the wall plate 32 can be prevented from collapsing as well as bending at the connecting portion 35. Thereby, the strength as the wall plate 32 can be significantly improved.

Although the above-mentioned fixing member can be provided with sufficient strength if it is provided in the vicinity of the connecting portion 35 of the side pillar 31, it is also possible to fix both members over the entire length in the vertical direction. The shape of can be formed in not only a plate shape but also a comb shape.

Further, the above-mentioned bolt-like fixing member can be provided between the upper portion of the wall plate 32 and the top plate 2, and the wall plate 32 is divided into a plurality of pieces in the width direction. A fixing member may be provided to fix adjacent wall plates to each other.

Further, a structure for engaging and fixing the swing plate 4 and the side column 31 is also adopted. That is, as shown in FIGS. 7 and 8, the ridges 4 are provided on both side edges of the tilt plate 4, and the ridges 4 are formed on the end faces of the side columns 31.
A concave groove 38 into which 1 is fitted is provided, and when the side pillar 31 is erected and the tilting plate 4 is closed, the ridge 41 and the concave groove 38 are engaged with each other so that they can be fixed to each other. There is.

As a result, when the tilting plate 4 is closed, the tilting plate 4 and the side pillar 31 are integrated, and the connecting portion 35 of the side pillar 31 is formed.
Can be prevented from bending, and since the longitudinal direction and the lateral direction of the side wall of the container are integrated, the strength of the entire container can be improved. Moreover, since the processing can be performed within the plate thickness of the side pillar 31, no protrusions are formed on the inner and outer surfaces of the container.

Further, as shown in FIG. 7, the guide rail 21 for accommodating the tilting plate 4 on the lower surface of the top plate 2 and the ridge 41 of the tilting plate 4 are made to correspond to each other.
The slide structure of the tilt plate 4 and the top plate 2 and the engaging and fixing structure of the side column 31 can be used in common, and the structure can be simplified.

As shown in FIG. 9, the swing plate 4 is
It is composed of a swing plate main body 42 and a slide member 43 that pivotally supports the swing plate main body 42. Then, the swing plate main body 42 is formed to have substantially the same height as the space between the bottom plate 1 and the top plate 2, and the shaft 4 provided on the slide member 43.
The shaft hole 45 of the swing plate main body portion 42 that fits in 4 is an elongated hole parallel to the plate surface. Further, an inclined surface 46 that inclines downward toward the inside of the container is provided at the lower edge of the swing plate main body 42, and the end surface of the bottom plate 1 is fitted with the inclined surface 46. A groove 11 is provided.

In this way, the shaft hole 45 of the swing plate body 42 is formed.
Is used as a long hole, and when the tilting plate 4 is closed, the tilting plate 4 is slightly lifted and pushed so that the inclined surface 46 of the lower edge fits into the fitting groove 11. 1
The tilting plate main body 42 can support a vertical load, and the rigidity of the entire container can be increased.

In addition, by making the length of the shaft hole 45 larger than the distance between the guide rails 21 of the top plate 2, the tilt plate housed in the upper guide rail and the tilt plate housed in the lower guide rail. And can have the same shape, and can share parts.

Further, as shown in FIG. 10, at the shaft attachment portion between the bottom plate 1 and the wall plate 32, the shaft hole 12 on the bottom plate 1 side is formed as a long hole which is long in the vertical direction. By making the shaft hole 12 a long hole in this way, as shown by the imaginary line in FIG. 10, when the wall plates 32 on both sides are overlapped and folded on the bottom plate 1, whichever wall plate is first, Even if the wall plate is tilted down, the shaft 32a of the wall plate that has been tilted afterwards moves above the shaft hole 12, so that the wall plate can be stacked on the wall plate that has been tilted first, and the wall plate 32 can be folded in the order of folding. There are no restrictions and folding work becomes easier.

FIG. 11 shows an example in which an auxiliary column 5 is provided to more securely fix the side column 31. The auxiliary column 5 has a swing plate portion 51 and a shaft portion 52 on its inner peripheral portion.
It is formed in a quadrangular frame shape that is rotatably assembled in, and is formed so that it can be slid and stored on the lower surface of the top plate 2 like the tilt plate 4.

When the container is assembled, the auxiliary support column 5 has a structure similar to that of the tilt plate 4 shown in FIG. 9 and is fitted between the bottom plate 1 and the top plate 2. It is formed so as to be integrated with the side pillar 31 in the same structure as the concave and convex engagement between the tilt plate 4 and the side pillar 31 shown in FIG. Therefore, by providing the auxiliary support column 5 having such a quadrangular frame shape, the connecting portion 3 of the side column 31 is provided.
5 can be prevented from bending, and the auxiliary column 5 itself can serve as a strength member, greatly improving the rigidity of the entire container. Particularly, even if the tilting plate portion 51 is opened to open the container end surface, necessary and sufficient rigidity can be maintained.

Although the rigidity can be greatly improved by framing the auxiliary columns as described above, sufficient strength can be obtained even if, for example, the bottom portion is omitted and the gate type is used. Further, when the main purpose is to prevent bending of the connecting portion 35 of the side pillar 31, the auxiliary pillar is formed in a rod shape along the side pillar 31, and its end is pivoted to the bottom plate 1 or the top plate 2. It may be attached so that it can be folded.

In this embodiment, various fixing metal fittings and engaging structures are used to enhance the strength and rigidity of the container when assembled, but these are used depending on the size of the container and the required strength. It can be appropriately selected and provided, and other fixing means and locking means can be arbitrarily combined and configured.

[0039]

As described above, according to the folding container of the present invention, the foldable side plate portion is a wall that is folded along the side column and the bottom plate or the top plate that are bent inward at the connecting portion. Since the plate and the plate are formed separately, the container can be easily assembled and folded. Moreover, since the vertical load can be supported by the wall plate, the strength of the container can be improved.

Further, by providing a fixing structure on the side pillars or wall plates so that the side pillars do not bend at the connecting portion, the rigidity of the side pillars can be increased and the strength of the entire container can be further improved.

[Brief description of drawings]

FIG. 1 is a perspective view of a container showing an embodiment of the present invention.

FIG. 2 is a partial sectional front view of the container.

FIG. 3 is a cross-sectional view showing a fixing member provided on a side pillar in an unfixed state.

FIG. 4 is a sectional view of the same fixed state.

FIG. 5 is a front view showing a fixing member for fixing the wall plate and the side pillar.

FIG. 6 is a sectional view of the same fixed state.

FIG. 7 is a side view showing the tilt plate in a state of being housed in the top plate and showing an engaging portion provided on a side pillar.

FIG. 8 is a cross-sectional view showing an engaged state of a swing plate and a side pillar.

FIG. 9 is a cross-sectional view of the swing plate in a closed state.

FIG. 10 is a cross-sectional view showing an attachment portion between a wall plate and a bottom plate.

FIG. 11 is a partial sectional side view showing an example of an auxiliary column.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Bottom plate, 11 ... Fitting groove, 12 ... Shaft hole 2 ... Top plate, 21 ... Guide rail 3 ... Side plate, 31 ... Side column, 32 ... Wall plate, 33 ... Lower column, 3
4 ... Upper side pillar, 35 ... Connection part, 36 ... Fixing metal fitting, 37 ... Fixing member, 38 ... Recessed groove 4 ... Flange plate, 41 ... Relief line, 42 ...
3 ... Sliding member, 44 ... Shaft, 45 ... Shaft hole, 46 ... Inclined surface 5 ... Auxiliary support column, 51 ... Flange plate part

Claims (8)

[Claims] 1. A folding container provided with a bottom plate and a top plate, a pair of foldable side plates, and a pair of tilt plates which are slidably housed in the top plate and rotatably provided when pulled out. In the above, the side plate is rotatably attached to each of the bottom plate and the top plate, and a pair of upper and lower side columns connected to each other so as to be bent inward at a connecting portion, and the side plate and the side plate. A foldable container characterized by being configured with a movably attached wall plate. 2. The side pillar is provided with a fixing member at a connecting portion thereof for preventing bending when the connecting pillar is extended and the side pillar is erected. Folding container. 3. The folding container according to claim 1, wherein the wall plate and the side pillar are provided with a fixing member that engages and fixes the wall board and the side pillar when they are erected. 4. The folding member according to claim 1, wherein the side plate and the tilting plate are provided with engaging portions that engage and fix the side plate upright when the side plate is erected and the tilting plate is closed. container. 5. The tilt plate includes guide ridges on both sides thereof, which are guided by rail grooves provided on both sides of a lower surface of the top plate, and the side plates are fitted with the guide ridges on both end faces thereof. The folding container according to claim 1, wherein the folding container is provided with a fitting groove for mating. 6. The pivot plate has a pivotal mounting portion to be mounted on the top plate so as to be vertically movable, and the bottom plate has a locking portion for locking the bottom side of the tilt plate. The folding container according to claim 1, characterized in that. 7. The folding container according to claim 1, wherein the wall plate is attached to a bottom plate or a top plate so as to be vertically movable. 8. The auxiliary pillar for holding the side pillar upright when the side pillar is erected is rotatably attached to the bottom plate or the top plate. Folding container.