JPH059317Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a folding container used as a so-called shipping box when transporting or conveying products.

[Problems to be solved by the prior art and the invention] For example, in the case of a container shown in Japanese Utility Model Application Publication No. 58-183326, the bottom plate is rotated so that the lower ends of two pairs of side plates facing each other are erected upward. It is movably supported and formed into a box shape by connecting the ends of the upright side plates to each other.

However, since the containers described above do not have an upper frame that surrounds and supports the upper outer surface of each side plate, when a large number of containers containing products are stacked, the upper frame acts directly on the side plate of the container located below. The side plates were bent due to the load of the container above and could not maintain their box shape.

For this reason, it was difficult to maintain the box shape of the container, and products could not be safely accommodated.

In order to solve the above-mentioned drawbacks of conventional containers, the present applicant has provided a bottom frame with an upper frame that rotatably supports each side plate so as to stand up and engages with the upper end of each side plate that stands up. We proposed a new container.

[Purpose of the invention] The purpose of the present invention is to provide a folding container that can securely store products by reliably maintaining the upright state of each side plate, in relation to an improvement of the container proposed by the applicant.

[Means for Solving the Problems] Therefore, the present invention consists of a rectangular frame having a pair of opposing first and second frame parts, and has a first engaged part inside the first frame part. and a bottom frame having a top frame in which a second engaged portion is provided inside the second frame portion, and a third frame portion and a fourth frame portion each having a bottomed shape and having an engaging step portion formed on the lower surface. and is supported so that it can stand up and rotate upward from the inside with respect to the third frame part of the bottom frame, and both ends are slidably supported by the upper frame, and the first engaged part is attached to the upper end part. a first side plate having an engaging part that engages with the first side plate; a second side plate having an engagement protrusion that engages with the second engaged portion; and an engagement protrusion that engages with the second engaged portion when attached to cover the opening of the upper frame; a bottom frame of a next container stacked on the contact portion and the top surface of the first side plate, each of which is in contact with the top surface of the first side plate in which the engagement portion is engaged with the surface and the first engaged portion, respectively, to maintain the respective engagement states; a lid having an upright portion into which the engaging stepped portion is inserted; one end is fixed to the first or second frame portion of the bottom frame, and the other end is located on the top surface of the lid and fastened to the lid; A folding container is constructed from a pair of fastening members.

[Operation of the device] Since the present invention is configured as described above, the upper frame is lifted upward along the upright first side plate and the upper frame is engaged with the upper end of the first side plate, and then the first side plate is engaged with the upper frame. The container is formed into a box shape by raising the second side plate located between the side plates and engaging the second engaged portion with the engagement protrusion. When the lid is attached to the upper frame in the above state, the abutting part of the lid contacts the inner surface of the engaging protrusion that engages with the second engaged part, and the engaging part engages with the first engaged part. The respective engaged states can be maintained by abutting on the upper surfaces of the engaged first side plates. In addition, when other containers are stacked on top of the container with the lid attached,
The engagement stepped portion of the bottom frame of the upper container is inserted into the upper container to restrict displacement of the upper container. Furthermore, the fastening member keeps the lid attached to the container and the product can be safely accommodated.

[Example] An example of the present invention will be described below with reference to the drawings.

Fig. 1 is an exploded perspective view of the folding container, Fig. 2 is a perspective view of the assembled folding container, and Fig. 3 is a schematic longitudinal section showing the state in which the lid is attached, corresponding to line A-A in Fig. 2. The top view and FIG. 4 are schematic vertical cross-sectional views showing the state in which the lid is attached, corresponding to the line B-B in FIG.
It is composed of an upper frame 5, a long side plate 7 forming a pair of opposing first side plates, a short side plate 9 and a lid 10 forming a pair of opposing second side plates.

The bottom frame 3 is made of synthetic resin and is formed into a rectangular frame shape with an opening in the center and an engaging stepped portion 3a on the bottom surface, and a pair of opposing long frames constituting a third frame portion on each side. The portion 3b and the short frame portion 3c constituting the fourth frame portion are integrally molded. The engagement step portion 3
A resin corrugated board 11 is fixed to the upper surface of a by resin rivets, ultrasonic welding, or the like. An engagement recess 3d is formed on the outer surface of the long frame portion 3b, and a first shaft support 13 is formed on the inner surface of the long frame portion 3b, protruding inward with a required width and having a shaft support hole (not shown) in the center. It is integrally molded at both ends and at the center. The first shaft support 1 is provided on the inner surface of the short frame portion 3c.
A second pivot support 1 that protrudes inward with a required width at a position below 3 and has a pivot hole (not shown) in the center.
5 are integrally molded on both ends.

The upper frame 5 is made of synthetic resin and has a square frame shape corresponding to the bottom frame 3, and includes a pair of opposing long frame portions 5a constituting a first frame portion and short frame portions 5b constituting a second frame portion. is integrally molded.
Projections 17 for supporting the lower surface of the engaging stepped portion 3a of the bottom frame 3 are integrally molded at both ends and an intermediate portion of the inner surface of the long frame portion 5a. Engagement recess 17c at the upper end
is formed and a claw portion 17 facing outward at the lower end.
An elastic arm 17b having a diameter a is integrally formed so as to hang downward. A flange 19 is integrally molded on the inner surface of the short frame portion 5b with a required width to protrude inward and support a long side plate 7, which will be described later. the first of
Notches 21 are formed respectively. Further, the flanges 19 located inward from both ends are each formed with a second notch 23 to which a protrusion 37 to be described later is engaged, and the short frame portion 5b corresponding to the second notch 23 has a recess on the lower surface. An engaging piece 25 having a diameter 25a is integrally molded.

The lower end of the long side plate 7 is rotatably supported by the first pivot support 13 of the bottom frame 3 so as to stand upward from the inside. This long side plate 7 includes a frame plate 7a made of synthetic resin and having an opening in the center, and a resin corrugated board 27 fixed to the frame plate 7a by resin rivets or ultrasonic welding technology so as to cover the opening. It consists of Grooves 29 are formed on the outer surface of the frame plate 7a corresponding to each of the protrusions 17 and extend in the vertical direction with a required width, and in which the protrusions 17 can be engaged. Engaged portions 29 are provided on both sides of the frame to be engaged with the claw portions 17a when the upper frame 5 is lifted upward.
a is integrally molded. Furthermore, engagement protrusions 7b that engage with the engagement recesses 17c are integrally molded on the frame plate 7a corresponding to the upper portions of the respective grooves 29 located on both sides. A notch 3 for shaft support is provided at the lower end of the frame plate 7a.
1 is formed corresponding to each first shaft support 13, and a shaft support hole (not shown) is formed in the lower end of the frame plate 7a located on both sides of the notch 31. Then, by inserting an elastically deformable synthetic resin shaft pin 33 into the shaft support hole corresponding to the notch 31 and into the shaft support hole of the first shaft support 13, the long side plate 7 is fixed relative to the first shaft support 13. It is rotatably supported so as to stand upward from the inside. The lower end surface of the frame plate 7a corresponding to the first shaft support 13 is formed into a planar shape so as to substantially coincide with the upper surface of the first shaft support 13. still,
Partition plates (not shown) are provided on the upper and lower inner surfaces of the frame plate 7a.
A plurality of a pair of support protrusions 7d facing each other with a gap into which the support protrusions 7d can be inserted are integrally molded.

The lower end of the short side plate 9 is rotatably supported on the second pivot support 15 of the bottom frame 3 so as to stand upward from the inside. The short side plate 9 includes a frame plate 9a made of synthetic resin and having an opening in the center, and a resin corrugated board 35 fixed to the frame plate 9a by resin rivets or ultrasonic welding technology so as to cover the opening. It is composed of. A recess 9b for a handle is formed in the upper outer surface of the frame plate 9a. Furthermore, protrusions 37 that engage with the second notch 23 are integrally molded on both sides of the upper part of the frame plate 9a, and notches 37a that engage with the flange 19 are formed on both sides of the lower end of the protrusions 37. ing. Furthermore, an engagement hole 39 having a protrusion 39a that engages with the recess 25a is formed in the protrusion 37 at a location that substantially coincides with the upper end of the frame plate 9a. A notch 41 for a shaft support is formed at the lower end of the frame plate 9a, corresponding to the second shaft support 15, and a shaft support hole (not shown) is formed in the frame plate 9a on both sides of the notch 41. It is formed. Then, by inserting an elastically deformable synthetic resin shaft pin 43 into the shaft support hole corresponding to the notch 41 and into the shaft support hole of the second shaft support 15, the short side plate 9 is attached to the second shaft support 15. Each is rotatably supported.

The lid 10 is made of synthetic resin and has a size that can be inserted into the upper outer surface of the upper frame 5, and closes the opening to the frame plate 12 having an opening in the center. A resin corrugated board 1 fixed by resin rivets or ultrasonic welding technology, etc.
It is composed of 4. The frame plate 12 has a hanging portion 12a hanging down along the outer surface of the upper frame 5,
An upright portion 12b that is locked to the engaging stepped portion 3a of the stacked bottom frames 3, an inner wall portion 12c as a contact portion that locks to the inner surface of the upper part of the upper frame 5, and a flat portion 12d that extends inward. It is composed of. A recess 12e into which the protrusion 37 is inserted when the lid 10 is attached to the upper frame 5 is formed in the inner wall portion 12c. In addition, the flat part 1
A protrusion 12f is integrally formed at a diagonal position of 2d to allow the end of a tag (not shown) to be hooked and inserted.

First and second bands 47a, 47b constituting a fastening member are attached to the short frame portion 3c of the bottom frame 3, and the first and second bands 47a, 47b
First and second fixing members 49a, 49b are provided at the other end.
is installed. The first and second bands 47a and 47b are rotated through a recess 51 provided in the middle part of the short frame part of the lid 10 so as to be positioned on the upper surface of the resin corrugated board 14, and then
and are connected to each other by second fixing members 49a and 49b. This allows the lid 1 to be attached to the upper frame 5.
The installation state of 0 is maintained.

Next, a method of assembling the folding container 1 constructed as described above will be explained with reference to FIGS. 3 to 8.

In FIG. 5 showing the folded state, FIG. 6 showing a longitudinal cross-sectional view taken along line C-C in FIG. 5, and FIG. 7 showing a longitudinal cross-sectional view taken along line D-D in FIG. After inserting the second shaft support 15 of the bottom frame 3 into the
By inserting the shaft pin 43 into the shaft support hole at the lower end of the frame plate 9a and the shaft support hole of the second shaft support 15, the pair of short side plates 9 facing the short frame portion 3c of the bottom frame 3 are moved inward. It is rotatably supported so as to stand upward from the base. Each short side plate 9 is then folded inward so as to be supported on the upper surface of the bottom frame 3.

Next, both ends of the frame body 7a are attached to the first part of the upper frame 5.
The notch 3 of the long side plate 7 is inserted into the notch 21.
After inserting the first shaft support 13 into the shaft support 1, insert the shaft pin 3 into the shaft support hole of the long side plate 7 and the shaft support hole of the first shaft support 13.
3 by inserting the long frame part 3 of the bottom frame 3.
A pair of long side plates 7 facing b are rotatably supported so as to stand upward from the inside. and the first
The upper frame 5, in which both ends of the frame plate 7a are slidably supported with respect to the notch 21, is integrally formed with the bottom frame 3 so that its engagement recess 3d and engagement protrusion 7b engage with each other. be converted into At this time, the first
Both ends of the long frame portion 3b are engaged with the notch portion 21. Further, the long side plate 7 folded inward around the shaft pin 33 is supported on the upper surface of the flange 19 of the upper frame 5.

Next, a method of assembling the folding or collapsible container 1 assembled as described above will be explained with reference to FIGS. 3, 4, and 8.

Figure 3, Figure 4 and Figure 8 showing the state in the middle of assembly.
In the figures, the long side plate 7 is changed from the state shown in FIG.
is erected upward from the inside so that it is erected around the shaft pin 33. At this time, since the lower end surface of the frame plate 7a and the upper end surface of the first shaft support 13 are formed in a substantially planar shape, the inner end of the frame plate 7a is connected to the first shaft support 13.
When slidingly contacting the upper end surface of the shaft pin 33, the shaft pin 33 is elastically deformed. This allows the long side plate 7 to rise and rotate upward, and when the long side plate 7 is erected, the lower end surface of the frame plate 7a and the upper end surface of the first shaft support 13 come into contact with each other due to the elastic return of the shaft pin 33. By being in contact with the long side plate 7, the upright state of the long side plate 7 is maintained. Further, when the long side plate 7 is erected, each protrusion 17 is engaged with the groove 29.

Then, with each long side plate 7 in an upright state, the upper frame 5
When the upper frame 5 is lifted upward, the upper frame 5
Since both ends of a are supported by the first notch 21,
Separation of the long side plate 7 and the upper frame 5 is prevented.
In addition, the protrusion 17 is slid upward while remaining engaged with the groove 29.

When the upper frame 5 is lifted upward, the claw portion 17a of the protrusion 17 engages the engaged portion 29a.
Furthermore, the engagement protrusions 7b are respectively engaged with the engagement recesses 17c. As a result, the upper frame 5 is maintained in its upwardly movable state while being assembled to the long side plate 7.

Next, when the short side plate 9 is rotated upward from the inside around the shaft pin 43 in the above state, the protrusions 37 are engaged with the second notches 23, respectively. At this time, the flange 19 is locked in the notch 37a of the protrusion 37, and the engagement piece 25 is inserted into the engagement hole 39 so that the recess 25a and the protrusion 39a are engaged, and the short The upright state of the side plate 9 is maintained. In this way, the folding container 1 is assembled.

After the product is housed in the folding container 1 assembled as described above, the lid 10 is inserted into the upper part of the folding container 1, the hanging part 12a is fitted into the outer surface of the upper frame 5, and the inner wall Part 1
2c is attached to be supported by the upper end surface of the upper frame 5. At this time, the protrusion 37 of the short side plate 9 of the lower folding container 1 is inserted into the recess 1 of the lid 10.
2e prevents the short side plate 9 from falling inward.

When the folding container 1 of the next stage is stacked on the folding container 1 to which the lid 10 is attached, the engagement stepped portion 3a of the bottom frame 3 is engaged with the upright portion 12b of the lid 10. Then, the first and second bands 4 are attached to the lid 10 attached to the upper frame 5.
7a and 47b are connected to the resin corrugated board 1 through the recess 51.
4 and then fastened together by the first and second fixing members 49a and 49b, the attachment state of the lid 10 to the upper frame 5 is maintained and the upright state of the short side plate 9 is maintained. Ru.

In addition, in the reverse order of assembly described above, after folding the short side plates 9 inward, pushing down the upper frame 5 to integrate with the bottom frame 3, and then folding the long side plates 7 inward, the folding container 1 is assembled. Folded.

In this way, in this embodiment, the upper frame 5 is lifted along both ends of the upright long side plate 7, and the claw portions 17 are lifted up.
a and the engaged portion 29a, the long side plate 7
The collapsible container 1 is held in a box shape by engaging the protruding body 37 with the short side plate 9 located therebetween in the second notch 23 . When the lid 10 is attached to the upper frame 5 in the above state, the protrusion 37 is inserted into the recess 12e to maintain the upright state of the short side plate 9. Further, the inner wall portion 12c abuts the upper surface of the long side plate 7 where the engagement protrusion 7b is engaged with the protrusion 17, so that the engaged state of both can be maintained. Further, when another folding container 1 is stacked on the folding container 1 to which the lid 10 is attached, the engaging stepped portion 3a of the bottom frame 3 of the folding container 1 located above
is inserted into the upright portion 12b of the lid 10 of the folding container 1 located below, thereby preventing displacement during transportation. and the first and second bands 4
7a and 47b so that they are positioned on the top surface of the resin cardboard board 14 of the lid 10, and then
When the fixing members 49a and 49b are fastened, the attachment state of the lid 10 to the upper frame 5 is maintained.

[Effects of the Invention] Therefore, the present invention can provide a folding container that can securely store products by reliably maintaining the upright state of each side plate.

[Brief explanation of the drawing]

Fig. 1 is an exploded perspective view of the folding container, Fig. 2 is a perspective view of the assembled folding container, and Fig. 3 is a schematic longitudinal section showing the state in which the lid is attached, corresponding to line A-A in Fig. 2. FIG. 4 is a schematic vertical sectional view taken along the line B--B in FIG. 2 showing the state in which the lid is attached, and FIGS. 5 to 8 are explanatory diagrams showing the operation. In the figure, 1 is a folding container, 3 is a bottom frame, and 5
is the upper frame, 7 is the first side plate, 9 is the second side plate, 1
0 is a lid, 12b is an upright portion, 12c is an inner wall portion as a contact portion, 12e is a recess as a support portion, 23 is a second notch portion as a second engaged portion, 37 is a protrusion,
47a and 47b are first and second fastening members.
It's a band.

Claims (1)

[Claims for Utility Model Registration] Consisting of a rectangular frame with a pair of opposing first and second frame parts, the first engaged part is inside the first frame part, and the first engaged part is inside the second frame part. an upper frame provided with two engaged portions; a bottom frame having a bottomed shape with an engaging stepped portion formed on the lower surface and having a third frame portion and a fourth frame portion; a third frame portion of the bottom frame; It is supported so that it can stand up and rotate upward from the inside with respect to the frame part, and both ends are slidably supported by the upper frame, and an engaging part that engages with the first engaged part is provided at the upper end part. 1st to have
a side plate, and an engagement member located between the first side plate and supported so as to be able to stand up and rotate upward from the inside with respect to the fourth frame portion of the bottom frame, and that engages with the second engaged portion at an upper end portion. a second side plate having a mating protrusion; and an inner surface of the mating protrusion that is engaged with the second engaged part when attached to cover the opening of the upper frame and engaged with the first engaged part. abutting parts that respectively abut on the upper surface of the first side plate to which the parts are engaged and maintain the respective engaged states; and an upright part into which the engaging stepped part of the bottom frame of the next container stacked on the upper surface is inserted. a pair of fastening members, one end of which is fixed to the first or second frame part of the bottom frame, and the other end of which is fastened to the top surface of the lid. A folding container featuring