JPH09165033A - Connecting structure for folding container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To pivot side plates freely turnably at one touch onto a base with shafts and also prevent the side plates from being detached even if an external force acts on the side plates pivoted with the shafts. SOLUTION: A folding container 3 can be folded so that side plates 2 are laid flat and can be set up into a box shape from a base 1 and the side plates 2 so that the side plates 2 are erected, by attaching the side plates 2 freely turnably to the base 1. At the end of each side plate 2, made of synthetic resin, a pair of lateral shaft parts 4 are formed opposite each other with a space between them on the same axis so that they are integrated with the side plate 2. The projecting front ends of the lateral shaft parts 4 are inclined. Lateral holes 7 for bearing are made in a bearing part 6 provided on the base 1. The pair of opposite lateral shaft parts 4 are inserted into the lateral holes 7 for bearing on both sides of the bearing part 6.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a folding container connecting structure which is folded with a side plate lying on a base body and is assembled in a box shape with the base plate and the side plate in a state where the side plate is erected. is there.

[0002]

2. Description of the Related Art Conventionally, a side plate 2 is rotatably attached to a base body 1 such as a bottom plate 1a, and the side plate 2 is laid sideways on the bottom plate 1a so that the side plate 2 stands up. A foldable container is known in the art in which a bottom plate 1a and a side plate 2 are assembled in a box shape in this state. In this conventional example, in order to rotatably support the side plate 2 on the base body 1, the shaft hole 30 of the bearing portion 40 of the side plate 2 and the shaft bearing portion 41 of the base body 41 as shown in FIG. A separate shaft pin 32 was inserted, and the end of the shaft pin 32 was caulked and fixed. Reference numeral 33 in the drawing denotes a caulking portion. However, in this conventional example, when the side plate 2 is rotatably attached to the base body 1, it is necessary to prepare a separate shaft pin 2, insert the shaft pin 2 and fix it by caulking. There is a problem that the supporting work takes time and the manufacturing cost is high.

Therefore, the applicant of the present invention forms the shaft 34 integrally with the side plate 2 and fits the shaft 34 into the bearing portion 41 formed integrally with the base body 1 to support the side plate 2 on the base body 1 with one touch. Thought to do. And a folding container equipped with such a shaft support has already been applied for in Japanese Patent Application No. 7-12274.
No. 1 has been filed. In the conventional example in which the shaft 34 is integrally formed on the side plate 2 and the shaft 34 is fitted into the bearing portion 41 integrally formed on the base body 1, as shown in FIG. 16, the bearing portion 41 has a substantially C-shaped cross section and side portions. Open the bottom of the side to the side,
By inserting the shaft 34 provided on the side plate 2 in the direction of arrow A in FIG. 16 from the side opening 35 of the bearing portion 41, the side plate 2 is pivotally supported on the base 1 with one touch.

[0004]

However, in the conventional example shown in FIG. 15, the bearing portion 41 has a C-shaped cross section when an external force acts in the direction of arrow B in FIG. 16 has a problem that the shaft 34 may be deformed and the shaft 34 may come off. Further, in FIG. 16, there is a problem that the shaft 34 may come off from the side opening 35 of the bearing portion 41 when an external force acts in the direction of arrow d. It was

The present invention has been made in view of the above-mentioned problems of the prior art. When pivotally supporting a side plate on a base body, the side plate can be pivoted by one-touch and external force acts on the side plate after pivotal support. It is an object to provide a folding container that does not easily come off.

[0006]

In order to achieve the above object, in the folding container of the present invention, the side plate 2 is rotatably attached to the base body 1 and the side plate 2 is folded and erected. In a folding container 3 in which a base body 1 and a side plate 2 are assembled in a box shape in a state, a pair of horizontal shaft portions 4 is integrally formed with the side plate 2 at an end of the side plate 2 made of synthetic resin.
Are provided coaxially to face each other with a gap therebetween, the projecting tip portion of the horizontal shaft portion 4 is inclined, and a horizontal bearing hole 7 is formed in the bearing portion 6 provided on the base body 1. 4 is fitted in the bearing lateral holes 7 on both sides of the bearing portion 6, respectively. With such a structure, in order to pivotally support the side plate 2 on the base body 1,
With the inclined surface 5 of the horizontal shaft portion 4 pressed against the opening edge of the end of the horizontal bearing hole 7, the side plate is pushed in a direction parallel to the surface of the side plate, so that the inclined surface 5 serves as a guide. Can be fitted into the bearing lateral hole 7.

[0007]

Embodiments of the present invention will be described below. 1 to 9 show an embodiment of the present invention. In the embodiment shown in FIGS. 1 to 9, side walls 2 made of synthetic resin are rotatably attached to the four sides of a rectangular base plate 1 a made of synthetic resin constituting the base body 1, and the folding container 3 is provided. Is configured. The bottom plate 1 may be square or rectangular, but in the embodiment shown in the accompanying drawings, the bottom plate 1a has a rectangular shape, and therefore two of the four side plates 2 facing each other have two side plates 2a facing each other. The lateral length is longer than that of the side plate 2b.

Here, the horizontal shaft portion 4 provided at the lower end portion of the side plate 2
The side plate 2 is rotatably attached to the bottom plate 1a by fitting it in the bearing horizontal hole 7 of the bearing part 6 provided in the bottom plate 1a. The structure of the portion that is axially supported by the bearing horizontal hole 7 is characteristic. That is, a plurality of recesses 8 are provided at the lower end of the side plate 2,
On both sides of the concave portion 8, the lateral shaft portions 4 are integrally formed with the side plates 2 made of synthetic resin.
Are coaxially provided so as to face each other with a gap therebetween. The lateral shaft portion 4 is inclined such that the lower surface of the projecting tip portion of the lateral shaft portion 4 in the state where the side plate 2 is erected is an inclined surface 5 and becomes higher toward the projecting tip side.

On the other hand, a plurality of bearings 6 are provided on the four sides of the upper surface of the bottom plate 1a so as to project integrally with the bottom plate 1a.
The bearing portion 6 is provided with a lateral bearing hole 7 in parallel with each side of the bottom plate 1a. The lateral length of the bearing portion 6 is slightly shorter than the lateral width of the recessed portion 8 of the side plate 2, and the height of the bearing portion 6 is the recessed portion 8.
It is slightly shorter than the groove depth of. That is, the bearing portion 6 has such a size that it can be fitted into the recess 8.

By pushing the side plate 2 in the direction parallel to the surface of the side plate 2 with the inclined surface 5 of the horizontal shaft portion 4 pressed against the opening edge of the end of the bearing horizontal hole 7, the synthetic resin is pushed. Using the elastic deformation of the horizontal shaft portion 4 made of plastic and the bearing portion 6 made of synthetic resin, the horizontal shaft portion 4 is used as the guide horizontal hole 7 using the inclined surface 5 as a guide.
It fits inside. In this case, as shown in FIG. 8 (a), the side plate 2 is erected and the side plate 2 is pushed in the plane direction so that the horizontal shaft portion 4 is fitted in the horizontal bearing hole 7 using the inclined surface 5 as a guide, or Side plate 2 as shown in FIG.
The side plate 2 is pushed in the plane direction with the tilted state, and the lateral shaft portion 4 is fitted into the bearing lateral hole 7 by using the inclined surface 5 as a guide, or although not shown in FIG. The side plate 2 can be pushed in the plane direction in a state where the side plate 2 is inclined with respect to b) and the horizontal shaft portion 4 can be fitted into the horizontal bearing hole 7 by using the inclined surface 5 as a guide.
There is no limitation on the posture of the shaft support work, and the horizontal shaft portion 4 is used as the guide horizontal hole 7 with the inclined surface 5 as a guide from any direction.
It can be fitted inside.

Further, since the lower surface of the projecting tip of the lateral shaft portion 4 in the state where the side plate 2 is erected is inclined as the inclined surface 5 so as to be higher toward the projecting tip side, the side plate 2 is erected after the shaft is supported. When used as a container, even if an external force acts upward or laterally on the side plate 2, it does not act as a guide for the inclined surface 5 to come off, and the lateral shaft portion 4 can be prevented from coming off from the lateral bearing hole 7. It is like this.

Here, the height position of the pivot portion of the side plate 2a with respect to the bottom plate 1a and the pivot position of the side plate 2b with respect to the bottom plate 1a are different from each other, and in the embodiment, the height of the side plate 2b is different. The height position of the pivot portion of the side plate 2a is set higher than the height position of the pivot portion, and the side plate 2b having a short lateral length (that is, the side of the short side) is first placed in the folded state as shown in FIG. The side plate 2a having a long lateral length (that is, the long side) is folded and stacked on the side plate 2b.

That is, as shown in FIG. 5, a rising protrusion 10 is provided along the long side of the upper surface of the bottom plate 1a,
A plurality of long-side bearing portions 6 are provided on the rising protrusion 10, and an upward edge 11 is provided along the outer side of the upper surface of the rising protrusion 10. On the other hand, as shown in FIG. 6, on the short side of the bottom plate 1a, the bearing portion 6 is provided so as to directly project from the upper surface of the bottom plate 1a. The bearing portion 6 protruding above the rising protrusion 10 on the long side is located higher than the bearing portion 6 directly protruding from the bottom plate 1a on the short side by the height of the rising protrusion 10. Since the height of the rising protrusion 10 is substantially the same as the thickness of the side plate 2b on the short side, the side plate 2b pivotally supported by the bearing portion 6 on the short side is placed sideways on the upper surface of the bottom plate 1a. The bottom plate 2a pivotally supported by the bearing portion 6 on the long side is laid sideways and then laid on the side plate 2b so as to be compactly folded.

In this embodiment, in order to assemble the folding container 3 into a box shape, the side plate 2a on the long side is set up,
After that, the side plates 2b on the short side are erected so that the adjacent side plates 2b
It is used as the container 3 by holding the assembled state in a box shape by detachably locking the end of a and the end of the side plate 2b by a locking means and connecting adjacent side plates 2 to each other. is there.

Here, an example of locking means for locking the side plate 2a and the side plate 2b in an upright state will be described with reference to an embodiment shown in FIG. A locking claw portion 12 and a locking projection 13 are vertically provided on upper portions of both end portions of the side plate 2b on the short side, and both end portions of the side plate 2a on the long side have substantially the same length. A columnar portion 14 projecting toward the short side is provided, and an upper end of the columnar portion 14 is provided with a locking groove portion 15 that opens downward and a locking concave portion 16 that opens toward the inner side. Fig. 9
With the side plate 2a standing upright, the side plate 2b is rotated in the direction of the arrow in FIG. 9 to stand up, thereby locking the locking claw portion 12 in the locking groove portion 15 and locking in the locking recessed portion 16. The protrusion 13 is locked. Here, the locking claw portion 12 is provided with a taper surface on the upper surface and serves as a guide when the locking claw portion 2 is locked in the locking groove portion 15 opening downward. By locking the locking claw 12 in the locking groove 15 and locking the locking projection 13 in the locking recess 16 in this manner, the side plate 2a on the long side and the side plate 2b on the short side are mutually connected. The container 3 is connected in a state in which it is prevented from falling down and can be used as the container 3.

Next, another embodiment of the present invention will be described with reference to FIG.
This will be described with reference to FIGS. In the folding container 3 of this embodiment, the base body 1 is composed of a rectangular bottom plate 1a made of synthetic resin and an upper frame 1b having a rectangular frame shape, and the side plates 2 are arranged on the opposite long sides. 2
It is composed of one side plate 2a and two side plates 2b arranged on opposite short sides. Here, the side plate 2a on the long side is configured by pivotally supporting opposite end portions of two upper and lower side panels 2a ₁ and 2a ₂ by a pivot support connecting portion 17.
_The horizontal shaft portion 4 provided at the lower end of ₂ is fitted into the bearing portion 6 provided on the bottom plate 1a to be axially supported, and the side panel 2a ₁
A horizontal shaft portion 4 provided on the upper end portion of the upper frame 1b is fitted into a bearing portion 6 provided on the long side of the upper frame 1b to be pivotally supported, and a horizontal shaft portion provided on the upper end portion of the side panel 2b on the short side side. The portion 4 is fitted and supported by a bearing portion 6 provided on the short side of the upper frame 1b. Upper and lower side panels 2a constituting the side plate 2a in the present embodiment
₁ , 2a ₂ and the horizontal shaft portion 4 provided on the side plate 2b, and the bottom plate 1a
The structure of the bearing portion 6 provided on the upper frame 1b is the same as the structure described in the above-described embodiment, and thus detailed description thereof will be omitted.

In this embodiment, the side plate 2 on the short side is formed.
b is laid sideways in the upper frame 1b, and in this state, the side plate 2a on the long side is folded in two and overlapped on the bottom plate 1a, and the side plate 2a is stored in the lower portion of the upper frame 1b to fold the length. The side plate 2a on the short side is placed on the side plate 2a on the side to
It can be folded compactly as shown in 1. On the other hand, when the container 3 is used, the upper frame 1b is pulled upward with respect to the bottom plate 1a and the side plate 2a on the long side that was folded in half is erected and the side plate 2b on the short side is rotated to rotate the long side. Standing between the inner surfaces of the end portions of the side plates 2a, the side plates 2a and 2b
And the side plates 2a and 2b are connected to each other in an upright posture to hold a box shape and can be used as a container.

In any of the above-described embodiments of the present invention, as the bearing portion 6, as shown in FIG. 14, a pair of protrusions 6a having a lateral bearing hole 7 are projected from the base body 1 to form one bearing portion. 6 may be configured, and in this case, the lateral shaft portions 4 on both sides are rotatably fitted into the bearing lateral holes 7 of the both projections 6a to configure a shaft support portion. .

By the way, in the present invention, the form of the folding container is not limited to that of each of the above-mentioned embodiments, and the side plate 2 is rotatably attached to the base body 1 and the side plate 2 is attached.
In the structure of the pivotal support portion between the side plate 2 and the base body 1 in other various types of folding containers, the base body 1 and the side plate 2 are assembled in a box shape when the side plate 2 is folded upside down and the side plate 2 is erected. It is applicable.

[0020]

As described above, according to the present invention, the side plate is rotatably attached to the base body, the side plate is folded when folded down, and the side plate is erected so that the base body and the side plate are assembled into a box shape. In the folding container described above, a pair of horizontal shaft portions are provided at the end portion of the side plate made of synthetic resin so as to be integral with the side plate and coaxially face each other with a gap, and the projecting tip portion of the horizontal shaft portion is inclined to form a base body. Form a bearing horizontal hole in the provided bearing part,
Since a pair of opposing horizontal shaft portions are fitted on both sides of the bearing horizontal hole of the bearing portion, the inclined surface is applied to the edge portion of the horizontal bearing hole when pivotally supporting the side plate on the base body. By simply pushing the side plate in the plane direction in this state, the horizontal shaft part can be pivotally supported in the horizontal bearing hole with a single touch using the inclined surface as a guide, and in this case, the side plate can be used as the base body. Standing upright, tilted,
In any of the laid-down states, the horizontal shaft portion can be easily pivotally supported by the horizontal bearing bearing hole by using the inclined surface as a guide, and the pivotal support work can be further facilitated.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a state where a folding container according to an embodiment of the present invention is assembled in a box shape.

FIG. 2 is a perspective view of the same folded state.

FIG. 3 is a side view of the above box-like assembled state.

FIG. 4 is a front view of the above box-like assembled state.

FIG. 5 is a cross-sectional view of a portion in which a side plate on the long side of the same is pivotally supported on a bottom plate.

FIG. 6 is a cross-sectional view showing a state in which a side plate on the short side of the same is pivotally supported on a bottom plate.

7 (a) and 7 (b) are front views showing a state before the horizontal shaft portion and a state after the horizontal shaft portion are attached to the bearing portion.

8 (a) and 8 (b) are perspective views showing respective examples of a fitting direction when the horizontal shaft portion is fitted into the bearing portion.

FIG. 9 is a perspective view showing a state in which the side ends of the same side plate are being locked.

FIG. 10 is a perspective view of a folding container according to another embodiment of the present invention assembled in a box shape.

FIG. 11 is a perspective view of the same folding state.

FIG. 12 is a perspective view showing a state during assembly of the above.

13A is a perspective view of a side plate of the same, and FIG. 13B is an enlarged view of an X portion of FIG. 13A.

FIG. 14 is a front view showing another embodiment of the shaft support portion.

FIG. 15 is a front view of a shaft supporting portion showing a conventional example.

FIG. 16 is a sectional view of a shaft support portion showing another conventional example.

[Explanation of symbols]

 1 Base 2 Side Plate 3 Folding Container 4 Horizontal Shaft 5 Inclined Surface 6 Bearing 7 Bearing Horizontal Hole

 ─────────────────────────────────────────────────── ─── Continued Front Page (72) Inventor Hidetoshi Yamaguchi 9-25 Kandacho, Gifu City Gifu Plastic Industry Co., Ltd.

Claims (1)

[Claims] 1. A folding container in which a side plate is rotatably attached to a base body, is folded with the side plate lying down, and is assembled in a box shape with the base plate and the side plate in a standing state of the side plate. A pair of horizontal shaft portions are integrally provided at the end portions of the side plates made of steel and are coaxially opposed to each other with a gap therebetween, and the projecting tip portions of the horizontal shaft portions are inclined, and the bearing portion is provided on the bearing portion provided on the base body. A structure for connecting a folding container, characterized in that a lateral hole is formed, and a pair of opposed lateral shaft portions are respectively fitted into the lateral bearing holes on both sides of the bearing portion.