JPH0142497Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a collapsible collapsible container used for transporting and conveying articles.

[Prior Art] The present applicant has previously disclosed in Japanese Utility Model Application Publications No. 167733/1988 and No. 48125/1989, etc., in which the upper part is rotatably supported by the upper frame and the lower part is supported when the container is assembled. a side plate engaged with the bottom frame;
The lower part is rotatably supported by the bottom frame and the upper frame is slidably supported, and the upper part is connected to the bottom frame by a gate plate that is engaged with the upper frame when the container is assembled. A collapsible and foldable container was proposed.

The container can be folded while the top frame and bottom frame are connected.

[Problem to be solved by the invention] However, in the case of the container described above, after lifting the top frame with the gate plate erected against the bottom frame, the side plate is rotated while maintaining the lifted state of the top frame. The lower end part must be moved to engage the bottom frame, resulting in poor assembly workability.

[Means for Solving the Problems] The purpose of the present invention is to improve the above-mentioned folding container, so that the lower end of the container can be moved to the bottom frame as the side plate rotates without maintaining the upper frame in a lifted state. An object of the present invention is to provide a folding container that can be engaged with the container and improve the ease of assembling the container.

For this reason, the present invention consists of an upper frame having a frame shape and having a support member for slidably supporting the gate plate on the inside of one opposing frame side, and a bottomed upper frame having a shape corresponding to the upper frame. a bottom frame, an upper end rotatably supported with respect to the upper frame;
a pair of opposing side plates, the lower ends of which are engaged with the bottom frame when the container is assembled, the lower ends of which are rotatably supported with respect to the bottom frame, and the upper ends of which are engaged with the upper frame when the container is assembled; In a folding container equipped with a pair of opposing gate plates, the upper surface of the bottom frame corresponding to the side plates is provided with a tapered surface for slidingly guiding the lower end of the side plates when assembling the container. It consists of

[Operation of the invention] According to the invention, there is provided a pair of side plates whose upper ends are rotatably supported by the upper frame and whose lower ends can be engaged with the bottom frame, and whose lower ends are rotatably supported by the bottom frame. When assembling the container, the upper frame and the bottom frame are connected by a pair of gate plates which are supported and slidably supported by a support member provided on the upper frame and whose upper ends can be engaged with the upper frame. In this case, if the side plate is rotated without keeping the top frame lifted after the top frame has been raised after the tilting plate has been erected with respect to the bottom frame, the bottom end surface will touch the tapered surface formed on the bottom frame. It is possible to engage the lower end of the side plate with the bottom frame while making sliding contact with the bottom frame, making it possible to easily assemble the container, and to firmly maintain the engagement between the upper end of the side plate and the upper frame, allowing the container It is possible to increase the strength.

[Example] Hereinafter, an example will be described according to an embodiment of the present invention.

The first diagram showing the outline of the folding container according to the present invention.
Figure 2 shows the support state of the upper frame and side plate.
Figure 3, which shows the cross section taken along the line A-A in Figure 1, Figure 4, which shows the cross section taken along the line B-B in Figure 1, and Figure 5, which shows the support state of the bottom frame and the tilting plate. In FIG. 6 showing the fixed state with the upper frame and FIG. 7 showing the fixed relationship between the side plate and the tilt plate, the upper frame 1 has a rectangular frame shape, and the opposing long frame 3
Ribs 5 are integrally molded on the inside of each. Also, on the inside of the opposing short frame 7 is a tilting plate 5 which will be described later.
Engagement protrusions 9 with which the upper end portions of the short frame 7 are engaged are integrally formed at required intervals in the longitudinal direction of the short frame 7. The ribs 5 are provided at each corner of the upper frame 1.
A tilt plate support portion 11 that supports the tilt plate 59 so as to be slidable in the vertical direction by the end face of the frame 7 and the inner surface of the short frame 7.
are provided for each.

A rotation support portion 1 of the side plate 17 is provided on the lower surface of the rib 5.
3 are integrally molded at required intervals in the longitudinal direction, and a through hole 15 is bored in the rotation support part 13. A side plate 17 is rotatably supported by the rotary support portion 13. The side plate 17 is composed of a resin corrugated board 19 and a rectangular side plate frame 21 integrally molded with the resin corrugated board 19.
A pair of bearing parts 23 are integrally formed on the upper part of the side plate frame 21 so as to sandwich each rotation support part 13 therebetween, and a through hole 25 is bored in the bearing part 23 . Then, the side plate 17 has the following characteristics with respect to the through hole 15 and the through hole 25:
It is rotatably supported by a first shaft pin 27 that is inserted in series. The first shaft pin 27 has an end portion in the axial direction formed into a tapered shape, and a locking stepped portion 27a is pivoted thereon. Also, one bearing part 2
3 is integrally molded with a locking projection 29, and when the first shaft pin 27 is inserted into the through hole 15 and the through hole 25, the locking projection 29 and the locking stepped portion 27a engage with each other. be done.

Receiving protrusions 31 are integrally formed on both sides of the outer surface of the side plate frame 21 near the fan plate 59, and the receiving protrusions 31
receives the lower end surface of the upper frame 1 when assembling the container. Support recesses 33 extending in the horizontal direction are integrally formed at both ends of the side plate frame 21, and the support recesses 33 are formed on the side plate 5 when the container is assembled.
A support protrusion 77 provided at 9 is engaged. Further, an engagement hole 35 is formed in the center portion of both sides of the side plate frame 21 slightly below the support recess 33.
5 is engaged with an engagement piece 79 provided on the flap plate 59 during assembly of the container. In addition, side plate frame 2
A locking hole 37 is formed at the lower end of the container 1, and an engaging protrusion 51 provided on the bottom frame 41 is inserted into the locking hole 37 when the container is assembled. A tongue piece 39 is integrally formed between the locking holes 37, and the tongue piece 39 is formed into an elastically deformable U-shape. During assembly of the container, the tongue piece 39 is elastically deformed as it passes through a protrusion 53 provided on a bottom frame 41, which will be described later. It is restored to its shape and its free end is engaged with the protrusion 53.

The bottom frame 41 has a shape substantially corresponding to the top frame 1, and includes a resin corrugated board 43 and a bottom frame frame 45 integrally molded with the resin corrugated board 43.
It is composed of. and the bottom frame 41
Each of the long frames 47 is formed with a tapered surface 49 whose height gradually increases from the inside to the outside, and an engaging protrusion 51 is integrally formed in correspondence with the locking hole 37. Further, a protrusion 5 is provided on the upper surface of the bottom frame 41.
3 is molded to correspond to the tongue piece 39. Each short frame 55 of the bottom frame 41 is provided with a stud 57.
are integrally erected, and the studs 57 are inserted into the tilt plate support portion 11 when the container is folded.

Rotation support portions 61 of the tilting plate 59 are integrally molded on the stud 57 at required intervals in the longitudinal direction, and the rotation support portion 61 has through holes 63.
is drilled.

A tilt plate 59 is rotatably supported by the rotary support portion 61 . The tilt plate 59 is composed of a resin corrugated board 65 and a tilt plate frame 67 that is integrally formed with the resin corrugated board 65. A pair of bearings 69 are provided at the lower end of the tilt plate frame 67 for each rotation support part 61. It is integrally molded to sandwich the . Further, a through hole 71 is bored in the bearing portion 69, and a second shaft pin 73 is inserted through the through hole 63 and the through hole 71. The second shaft pin 73 is formed into a tapered shape at one end in the axial direction and has a stepped portion 73 at the end.
A is rotated. A locking protrusion 77 is integrally molded in one of the bearing parts 69, and when the second shaft pin 73 is inserted into the through hole 63 and the through hole 71, the locking protrusion 77 is inserted into the stepped portion 73a. is engaged with.
Support protrusions 77 extending in the horizontal direction are integrally formed on both sides of the tilting plate frame 67 in correspondence with the support recesses 33, and engagement pieces 79 are integrally formed in correspondence with the engagement holes 35. It is molded into. Furthermore, an engagement hole 81 is formed in the upper part of the tilt plate frame 67 in correspondence with the engagement protrusion 9 . Further, support parts 83 are integrally formed on both sides of the upper end of the tilt plate frame 67, and the support parts 83 receive and support the lower surface of the bottom frame 41 of the upper container when the containers are stacked.

In addition, the upper frame 1, the rotation support part 13, the first
The shaft pin 27, the bottom frame 41, the tilt plate 59, and the second shaft pin 73 are each molded from a single resin having excellent impact resistance, weather resistance, and bending stress characteristics, such as polypropylene resin.

Next, a method for assembling and folding the container configured as described above will be explained in FIGS. 1 and 8 to 10.
This will be explained with reference to the figures.

First, to explain the method of assembling the container, as shown in FIGS. 1 and 8, each flap plate 59 is rotated upward (in the direction of the solid line arrow shown in FIG. 8) about the second shaft pin 73. The board 59 is erected.
Next, after lifting the upper frame 1 upward with respect to the bottom frame 41 and releasing the fitted state of the studs 57 to the tilting plate support portion 11, while sliding the tilting plate 59 into contact with the tilting plate support portion 11, Lift the upper frame 1 further upward. As a result, the engagement hole 81 provided in the tilt plate 59 is engaged with the engagement protrusion 9 provided on the inner surface of the short frame 7 of the upper frame 1, and the upper part of the tilt plate 59 is moved by the tilt plate support portion 11. Supported.

Next, in the above state, the side plate 17 is rotated downward (in the direction of the solid line arrow shown in FIG. 8) about the first shaft pin 27, thereby causing the side plate 17 to hang down. At this time, the side plate 17 is rotated toward the long frame 47 while its lower end surface is in sliding contact with the tapered surface 49, and then the locking hole 37
The engaging protrusion 51 is engaged with. At this time, since the upper frame 1 is slightly lifted as the lower end of the side plate 17 comes into sliding contact with the tapered surface 49, the engagement state of the engagement protrusion 9 with the engagement hole 81 is firmly maintained. Further, the tongue piece 39 is elastically deformed as it comes into sliding contact with the protrusion 53, and after riding over the protrusion 53, the tongue piece 39 is restored to its substantially original shape due to its elastic force, and its free end is brought into contact with the protrusion 53. abutting and engaging. As a result, the lower end of the side plate 17 is fixed to the bottom frame 41. In particular, since the free end of the tongue piece 39 is abutted and engaged with the protrusion 53, even if an external force is applied to the side plate 17 from the outside, rotation of the side plate 17 is effectively restricted, and the container is The assembled state is firmly maintained. Furthermore, as the side plate 17 hangs down, the support protrusion 77 provided on the gate plate frame 67 is engaged with the support recess 33 provided on the side plate frame 21, and the engagement piece 79 is inserted into the engagement hole 35. is engaged.
As a result, the support recesses 33 and the support protrusions 77 of the side plates 17 and the tilting plates 59 are engaged with each other, so that when the load of stacked containers acts on the upper frame 1, the load is transferred to the upper frame 1. It is possible to securely maintain the assembled state of the container by receiving the containers while being distributed in the horizontal direction at locations close to the container, thereby restricting the bending of the side plates 17 and the flap plates 59.
Furthermore, as the side plate 17 droops, the receiving protrusion 31 is engaged with the lower end surface of the upper frame 1, so that when the containers are stacked, the receiving protrusion 31 is in a downward direction acting on the upper frame 1. The strength of the container is increased by preventing the load from acting directly on the side plates 17 and the flap plates 59.

The containers assembled as described above are stacked after containing necessary items. At this time, the bottom of the next container stacked upward is supported by the support part 83 that slightly protrudes from the top surface of the rib 5, so that the bottom of the next container stacked above is supported by the support part 83 that protrudes slightly from the top surface of the rib 5. Volume can be increased.

Next, in FIGS. 8 to 10, to fold the container assembled as described above, first fold the side plate 17 in the direction of the broken line arrow in FIG. 8 in the reverse order of the above assembly method, and then, Engagement protrusion 9 and engagement hole 8
1 and push down the upper frame 1. As a result, the stud 57 is fitted into the tilting plate support part 11, and the upper frame 1 and the bottom frame 4 are fitted together.
1 are integrated. Next, the tilt plate 59 is folded in the direction of the broken line arrow in FIG. 8, and the tilt plate 59 is housed on the upper surface side of the rib 5. (See Figures 9 and 10) In this way, in this embodiment, the upper end portion is the upper frame 1.
The side plate 17 is rotatably supported by the rotation support part 13 of the bottom frame 41 and is engageable with the engagement protrusion 51 of the bottom frame 41 in the locking hole 37; The upper frame 1 and the bottom frame 41 are connected by a tilting plate 59 which is rotatably supported and is in sliding contact with the tilting plate support portion 11 and whose engaging protrusion 9 is engaged with the engaging hole 81 at the upper end. It allows the container to be folded in any state. When assembling the container, the lower end of the side plate 17, which is rotated downward, comes into sliding contact with the tapered surface 49 while the engaging protrusion 51 is engaged with the locking hole 37, making it easy to assemble the container. with tapered surface 4
9 and the lower end of the side plate 17, the upper frame 1
is lifted slightly upward, so that the engagement state between the engagement hole 81 and the engagement protrusion 9 can be strengthened,
The strength of the container assembly is increased.

[Effects of the invention] As described above, the present invention allows the lower end of the side plate to engage with the bottom frame as the side plate rotates without maintaining the upper frame in a lifted state, thereby improving the ease of assembling the container. It is possible to provide folding containers.

[Brief explanation of the drawing]

FIG. 1 is a perspective view schematically showing a folding container;
Fig. 2 is a cross-sectional view showing the support state of the upper frame and side plate, Fig. 3 is a cross-sectional view taken along line A-A in Fig. 1, and Fig. 4 is a cross-sectional view taken along line B-B in Fig. 1. 5 is a cross-sectional view showing how the bottom frame and the tilting plate are supported, FIG. 6 is a perspective view showing how the tilting plate and the upper frame are fixed, and Figure 7 is how the side plate and the tilting plate are fixed. Explanatory diagrams showing relationships, Figures 8 to 10
The figure is an explanatory diagram showing the effect. In the figure, 1 is the top frame, 41 is the bottom frame, 17
59 is a side plate, 59 is a tilt plate, and 49 is a tapered surface.

Claims (1)

[Claims for Utility Model Registration] An upper frame having a frame shape and having a support member for slidably supporting a tilt plate on the inside of one opposing frame side, and a bottom with a shape corresponding to the upper frame. a pair of opposing side plates whose upper ends are rotatably supported relative to the upper frame and whose lower ends are engaged with the bottom frame during assembly of the container; A folding container is provided with a pair of opposing gate plates that are rotatably supported by the container and whose upper ends are engaged with the upper frame when the container is assembled, and the top surface of the bottom frame corresponding to the side plates is A folding container characterized in that a tapered surface is provided for slidingly guiding the lower end of the side plate during assembly.