JPH0142498Y2 - - 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 previously filed Utility Application No. 59-55337 and Utility Application No. 59-55337.
No. 59-135293, etc., a side plate whose upper part is rotatably supported by the upper frame and whose lower part is engaged with the bottom frame when the container is assembled; We have proposed a folding container that is slidably supported by the frame and can be folded with the top frame and bottom frame connected by a gate plate whose top part is engaged with the top frame when the container is assembled.

[Problems to be Solved by the Invention] However, the above-mentioned folding container has engagement holes vertically provided in the center of both sides of the side plates, and engagement protrusions that fit into the engagement holes on both sides of the gate plate. is provided, and the side plate and the gate plate are fixed by engaging the engagement protrusion into the engagement hole when assembling the container.
When containers containing articles are stacked, the load of the stacked containers acts on the upper frame of the lower container. This load acts concentratedly on the side plates and gate plates located at each corner of the upper frame through the upper frame, but the engaging portions and the engaging holes cannot sufficiently cope with this load. Due to the load, the side plates or flap plates were bent and could not maintain the assembled state of the container.

[Means for Solving the Problems] The purpose of the present invention is to improve the above-mentioned folding containers, and to effectively prevent the side plates or the flap plates from bending due to the load applied when the containers are stacked. The object of the present invention is to provide a folding container that can maintain the assembled state of the container.

For this reason, the present invention includes an upper frame having a frame shape, a bottom frame having a shape corresponding to the upper frame, and an upper end rotatably supported with respect to the upper frame, and the container is assembled. a pair of opposing side plates whose lower ends are engaged with the bottom frame when the container is assembled; the lower ends are rotatably supported with respect to the bottom frame; A folding container comprising a pair of opposing gate plates that are engaged with an upper frame, and a support protrusion extending in the horizontal direction on the upper part of the side plate and the cover plate, and a support protrusion that fits into the support protrusion. A support recess is provided on the upper frame side,
When the container is assembled, the support protrusions and the support recesses are engaged with each other to form a folding container.

[Operation of the invention] According to the invention, the side plate has an upper end rotatably supported by the upper frame and a lower end engaged with the bottom frame; a lower end rotatably supported by the bottom frame; The container is configured to be foldable in a state in which the top frame and the bottom frame are connected by a gate plate that is slidably supported by the top frame and that engages with the top frame. When assembling the container, the support recesses and support protrusions provided on the upper frame sides of the side plates and the gate plates are engaged with each other. As a result, when the load of the stacked containers acts downwardly on the side plate and the gate plate through the upper frame, this load is received while being distributed in the horizontal direction by the support recess and the support protrusion. The assembled state of the container can be reliably maintained by avoiding bending of the side plates and the flap plates.

[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. Each corner of the upper frame 1 is provided with the ribs 5.
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.

The 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 rotary support part 13 therebetween, and a through hole 25 is bored in the bearing part 23 . Then, the side plate 17 is arranged with respect to the through hole 15 and the through hole 25,
It is rotatably supported by a first shaft pin 27 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.

A receiving protrusion 31 is integrally formed on both sides of the outer surface of the side plate frame 21 near the fan plate 59, and the receiving protrusion 31
is engaged with the lower end surface of the upper frame 1 when assembling the container. Support recesses 33 extending horizontally are integrally formed at both ends of the side plate frame 21, and the support recesses 33 are engaged with support protrusions 77 provided on the tilt plate 59 when the container is assembled. . In addition, an engagement hole 35 is formed in the center of both sides of the side plate frame 21 slightly below the support recess 33, and an engagement piece 79 provided on the flap plate 59 is engaged with the engagement hole 35 when assembling the container. will be combined. Further, a locking hole 37 is formed at the lower end of the side plate frame 21, and the locking hole 37 is inserted into the bottom frame 41 when the container is assembled.
An engaging protrusion 51 provided at is inserted and fitted. 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 integrally molded with the resin corrugated board 65. A pair of bearings 69 are provided at the lower end of the tilt plate frame 67 at each rotation support portion. They are integrally molded so as to sandwich 61. 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 75 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 75 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 side plate 17 is rotated toward the long frame 47 side.
The engaging protrusion 51 is engaged with. In addition, the tapered surface 4
Since the upper frame 1 is slightly lifted as the lower end of the side plate 17 comes into sliding contact with the engagement hole 81, the engaging state of the engagement protrusion 9 with respect to the engagement hole 81 is firmly maintained. Furthermore, after the tongue piece 39 gets over the protrusion 53 by elastically deforming as it comes into sliding contact with the protrusion 53,
Due to its elastic force, it is restored to its substantially original shape and its free end is abutted and engaged with the protrusion 53. This allows the side plate 1
7 is fixed at its lower end 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 side plate 17 and the tilting plate 59 are connected to the support recess 3.
3 and the support protrusion 77, so when the load of stacked containers acts on the upper frame 1, the load is received while being distributed horizontally at a location close to the upper frame 1. Therefore, it is possible to restrict the bending of the side plates 17 and the tilt plate 59 and firmly maintain the assembled state of the container. Furthermore, as the side plate 17 droops, the receiving protrusion 3
1 is engaged with the lower end surface of the upper frame 1, so that when the containers are stacked, the receiving protrusion 31
It receives the downward load acting on the upper frame 1 and prevents the load from concentrating on the side plates 17 and the gate plate 59.

The containers assembled as described above are stacked upward after the required articles are stored therein. At this time, the bottom of the next stacked container is supported by the support part 83 that slightly protrudes from the upper surface of the rib 5, so the container volume is reduced compared to a conventional container in which the bottom of the container is received by the rib 5. May increase.

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 lower end is rotatably supported by the bottom frame 41.
a pair of side plates 17 that can be engaged, and a pair of gates whose lower ends are rotatably supported by the gate plate 59, whose upper ends are slidably supported by the ribs 5, and whose upper ends can be engaged with the upper frame 1. plate 59 and upper frame 1
The container can be folded in a state where the bottom frame 41 and the bottom frame 41 are connected. In the assembled state of the container, the support protrusion 77 is connected to the support recess 33.
By engaging the support protrusions 77 and the support recesses 33 close to the upper frame 1, the load acting on the side plates 17 and the gate plate 59 through the upper frame 1 when the containers are stacked is reduced. Since the containers are received while being dispersed in the horizontal direction, bending of the side plates 17 and the flap plates 59 can be avoided and the assembled state of the container can be firmly maintained.

[Effects of the invention] According to the invention, there is a collapsible folding device that can effectively prevent side plates or gate plates from bending due to the load applied when containers are stacked, and can maintain the assembled state of the containers. It is possible to provide a container.

[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 upper frame, 17 is the side plate, 33 is the support recess, 41 is the bottom frame, 59 is the tilt plate, 77
is a supporting protrusion.

Claims (1)

[Claims for Utility Model Registration] An upper frame having a frame shape, a bottom frame having a shape corresponding to the upper frame and having a bottom, an upper end of which is rotatably supported relative to the upper frame, and a container. a pair of opposing side plates whose lower ends are engaged with the bottom frame when the container is assembled; A folding container comprising a pair of opposing gate plates whose upper ends are engaged with the upper frame, and a support protrusion extending in the horizontal direction and a support protrusion fitted into the support protrusion at the upper part of the side plate and the cover plate. A folding container characterized in that mating support recesses are provided on the upper frame side, and these support protrusions and support recesses are engaged with each other when the container is assembled.