JP6830372B2 - Transport container - Google Patents

Description

The present invention relates to a one-way type (disposable type) transport container used for transporting automobile parts and the like.

Many of these types of shipping containers use corrugated cardboard to reduce costs. For example, in the transport container 1 described in FIG. 1 of Patent Document 1, a corrugated cardboard box 3 is placed on a wooden pallet 2 as shown in FIG. The box body 3 has a square tubular side plate panel 3a having both upper and lower ends opened in a rectangular shape, and a ceiling cap 3b and a floor cap 3c attached to the upper and lower ends of the side plate panel 3a.

By tightening the box body 3 and the pallet 2 in the vertical direction by the band 4, the pallet 2 and the box body 3 are integrated, thereby maintaining the strength of the box body 3. When transporting heavy objects, reinforcing square timbers are vertically arranged inside the four corners of the box body 3 in order to increase the stacking strength, and the square timbers are fixed to the side plate panel 3a by nailing.

Japanese Unexamined Patent Publication No. 2015-20747 (Fig. 1)

However, the above-mentioned conventional transport container has the following problems.
(1) It takes time and effort to hang a band that integrates the pallet 2 and the box body 3.
(2) Since the entire box body 3 is scrapped after the transport container 1 is used, the cost for treating the ceiling cap 3b, the floor cap 3c, and the square lumber as waste materials increases.
(3) Since the side plate panel 3a is fitted into the inner method of the peripheral edge portion of the ceiling cap 3b and the floor cap 3c, the difference between the outer method and the inner method of the peripheral edge portion causes a volume loss of the transport container.

Therefore, an object of the present invention is that the band hanging work is not required, the volume loss can be eliminated by omitting the ceiling cap and the floor cap, the manufacturing cost and the waste material disposal cost can be saved, and the required stacking strength without the reinforcing square lumber can be obtained. Is to provide a transport container that can secure the above.

In order to solve the above-mentioned problems, the present invention comprises a rectangular base member in which a lower groove portion having an upward opening is arranged along four sides, a square tubular side plate panel in which a lower end portion is housed in the lower groove portion, and the above. A rectangular upper frame member having an upper groove portion for accommodating the upper end portion of the side plate panel, and a middle support column for vertically connecting between the longitudinal intermediate portions of the four sides of the upper frame member and the base member. It is a transport container characterized by having.

Since the transport container of the present invention can maintain the required strength in the vertical direction by the middle strut, the ceiling cap, floor cap, and reinforcing square lumber of the conventional transport container are omitted, and the banding is also unnecessary to reduce the cost. It is possible. Further, by arranging the lower end portion of the side plate panel in accordance with the peripheral edge portion of the base member, volume loss can be eliminated.

It is a perspective view of the transport container which concerns on embodiment of this invention. It is a top view of the base member of a transport container. A header to be welded to the four sides of the base member, (a) is a plan view, (b) is a side view, and (c) is a cross-sectional view. Lower corner metal fittings to be attached to the corners of the base member, (a) is a perspective view, (b) is a plan view, (c) and (d) are side views, and (e) and (f) show an attachment method. It is a perspective view. It is (a) front view and (b) side view of the middle support. It is (a) plan view, (b) side view and (c) sectional view of the upper frame material. It is a perspective view of the upper corner metal fitting attached to the upper frame material. It is a top view of the upper corner metal fittings. It is a top view of the upper corner metal fitting of another specification for comparison. It is a perspective view of the conventional transport container.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In addition, the same or corresponding parts are designated by the same reference numerals throughout the drawings, and duplicated explanations will be omitted as appropriate.

(Construction of transport container)
FIG. 1 is a perspective view of a one-way type transport container 100 according to an embodiment of the present invention. The transport container 100 has a rectangular (square) base member 10 mainly composed of a corrugated steel plate, and a corrugated cardboard side plate panel 20 arranged on the base member 10. The side plate panel 20 is formed by bending four strip-shaped corrugated cardboards at right angles in the longitudinal direction, overlapping both ends in the longitudinal direction with a predetermined width, and then connecting the overlapped portions with a plurality of staples. It is configured in the shape of a square tube with an opening.

A total of three lubricants 11 parallel to each other are fixed by welding to the center and both ends of the lower surface of the base member 10. The base member 10 is square in a plan view as shown in FIG. 2, but it can also be formed of any rectangular shape depending on the intended use. When the base member 10 is made rectangular, the shape of the side plate panel 20 is also formed into a square cylinder having a rectangular opening corresponding to the shape.

As shown in FIGS. 3A to 3C, a header 30 made of sheet metal having a U-shaped cross section is fixed to the four sides of the base member 10 by welding. The header 30 is for positioning the lower end portion of the side plate panel 20, and has a lower groove portion 30a for fitting and accommodating the lower end portion of the side plate panel 20 as shown in FIG. 3C.

As shown in FIG. 3A, the headers 30 of FIG. 3 are arranged in pairs on the peripheral edge of the base member 10 as shown in FIG. 2, and the bent portions 31 and 32 formed at two positions of the headers 30 are defined as boundaries. Bend at a right angle in the direction of the arrow to make a U-shape in plan view. Then, the U-shaped header 30 is arranged along the three opposing sides of the base member 10, and then fixed to the base member 10 by welding.

The length L (= L1 + L2) between the two bent portions 31 and 32 of the header 30 corresponds to the length of one side of the base member 10. Further, the length L1 from one bent portion 31 to one end 33 of the header 30 and the length L2 from the other bent portion 32 to the other end 34 of the header 30 are unequal lengths (L1 < It is set to L2).

The reason for making the lengths unequal in this way is to prevent the first slit hole 35 for inserting and connecting the lower end portion of the middle column 40, which will be described later, from being divided at the end position of the header 30. When the first slit hole 35 is divided between the pair of headers 30, the strength of the first slit hole 35 is lowered and the fixing strength of the middle strut 40 is lowered.

A first slit hole 35 is formed at a predetermined distance L3 from the other end 34 of the header 30 and at an intermediate position between the two bent portions 31 and 32. The lower ends of the four middle columns 40, which will be described later, are inserted into the first slit holes 35 and fixed.

Further, a second slit hole 36 is formed at a position of a predetermined distance L4 on both sides of the bent portions 31 and 32. The fixing leg 50a of the lower corner metal fitting 50 described later is inserted into the second slit hole 36 and fixed.

As shown in FIG. 4, the lower corner metal fitting 50 is an L-shaped metal fitting in a plan view, and has a vertical plate portion 50b that rises vertically from the header 30 and an inclined plate portion that is inclined outward from the upper end of the vertical plate portion 50b. Has 50c. A fixed leg 50a is formed at the lower end of the vertical plate portion 50b, and the fixed leg 50a is inserted into the second slit hole 36 of the header 30 from above as shown in FIG. 4 (e), and as shown in FIG. 4 (f). It is folded back 180 degrees and the lower corner metal fitting 50 is fixed to the header 30. A slit 50d is formed at the base end of the fixed leg 50a so that it can be easily folded back by hand.

The middle column 40 is a sheet metal rod-shaped body having an elongated rectangular cross section as shown in FIG. The middle strut 40 has a rectangular cross section of a predetermined size in order to maintain the required strength in the vertical direction. In this embodiment, a sheet metal rod having a width of 25 mm, a thickness of 12 mm, and a length of about 1 m is used.

Fixing legs 41 made of relatively thin sheet metal are fixed to the upper and lower ends of the middle strut 40 by welding. The fixed legs 41 are used to connect and fix the upper and lower ends of the middle strut 40 to the header 30 and the upper frame member 60 described later, respectively, and the fixed legs 41 can be easily bent at the base end of the fixed legs 41. A slit 41a is formed for this purpose.

The upper frame member 60 shown in FIG. 6 is attached to the upper end of the side wall panel 20. The upper frame material 60 is made of pressed sheet metal having a U-shaped cross section. Two upper stile members 60 are used to form an upper stile on the four sides of the upper end of the side wall panel 20.

A bent portion 61 is formed at the central portion of the upper frame member 60 in the longitudinal direction, and the upper frame member 60 is bent at a right angle in the direction of the arrow as shown in FIG. 6A at the bent portion 61 to form the upper end portion of the side wall panel 20. Fit in. At this time, the bent portion 61 is aligned with the corner portion of the side wall panel 20.

A first slit hole 63 for inserting and fixing the fixing leg 41 at the upper end of the middle support 40 is formed at the center position of both end portions 62 and the bent portion 61 of the upper frame member 60. A second slit hole 64 for inserting and fixing the fixing legs 70a of the upper corner metal fitting 70, which will be described later, at a predetermined distance L5 from both ends 62 of the upper frame member 60 and at a predetermined distance L5 on both sides of the bent portion 61. Is formed. The cross section of the second slit hole 64 is shown in (c) (the cc line cross section of (a)) of FIG.

The transport container 100 of this embodiment is configured to be stackable. As shown in FIG. 7, a hemispherical convex portion 71 is formed on the upper corner metal fitting 70 for the stacking, and a circular hole portion is formed on the lower surface of the lubricant 11 of the base member 10 corresponding to the convex portion 71. It is formed. Then, when the transport containers 100 are stacked, the hemispherical convex portion 71 of the lower transport container 100 fits into the circular hole portion of the base member 10 of the upper transport container 100 in the horizontal direction between the upper and lower transport containers 100. It is designed to prevent misalignment.

The upper corner metal fitting 70 has a fixing leg 70a for inserting and fixing into the second slit hole 64 of the upper frame member 60, an engaging leg 70b that engages with the outer edge portion of the upper frame member 60, and four corners of the side plate panel 20. Has a contact portion 70c that comes into contact with the outside. By pressing the corners 21 at the four corners of the side plate panel 20 against the contact portion 70c without a gap as shown in FIG. 8A, the positional deviation between the upper frame member 60 and the side plate panel 20 can be corrected. ..

The shape of the contact portion 70c is a simple flat plate in the illustrated example, and the normal direction of the contact portion 70c is oriented so as to bisect the right angle of the corner portion 21. The reason is to allow the natural bending of the corner portion 21 that occurs when the contact portion 70c is pressed against the corner portion 21. It is possible to make the shape of the abutting portion 70c into an L-shaped cross section according to the shape of the corner portion 21, but this will result in restricting the natural bending and excessive deformation / damage of the corner portion 21. May cause.

FIG. 8B shows an upper corner fitting 70 having a contact portion 70d of a different specification for comparison with FIG. 8A. There is a slight gap between the contact portion 70d and the corner portion 21 of the side plate panel 20. If there is such a gap, the side plate panel 20 is displaced in the vertical direction and the horizontal direction as shown by the arrows in the figure, so that it becomes difficult to maintain the strength of the side plate panel 20 and thus the strength of the entire transport container 100.

(How to assemble a shipping container)
In order to assemble the transport container 100 described above, first, the lower corner metal fittings 50 are attached to the header 30 at the four corners of the base member 10 as shown in FIGS. 4 (e) and 4 (f). That is, the two fixed legs 50a of the lower corner metal fitting 50 are inserted into the second slit hole 36 as shown in FIG. 4 (e), and the fixed legs 50a protruding below the header 30 are folded upward. This completes the attachment of the lower corner metal fitting 50 to the header 30.

Next, the lower end portion of the side plate panel 20 is fitted into the lower groove portion 30a of the header 30 of the base member 10. At this time, the four corners of the side plate panel 20 are aligned with the lower corner metal fitting 50, and the four corners of the side plate panel 20 are fitted into the lower groove portion 30a by using the inclined portion 50c of the lower corner metal fitting 50. With this, the side plate panel 20 can be erected vertically on the base member 10.

Next, the upper frame member 60 is attached to the upper end of the side plate panel 20. After that, the fixing legs 41 at the upper and lower ends of the middle support 40 are inserted into the first slit hole 35 of the header 30 of the base member 10 and the first slit hole 63 of the upper frame member 60, respectively. Then, the fixing leg 41 is bent 180 degrees in the direction opposite to the insertion direction to fix the middle support column 40.

Since the fixed leg 41 can be easily bent manually by the slit 41a formed at the bent position of the base end portion, the middle strut 40 can be easily attached. It is also possible to further increase the fixing strength of the middle strut 40 by filling the slit 41a after bending with welding.

Finally, the upper corner metal fittings 70 are attached to the four corners of the upper frame member 60. The upper corner metal fitting 70 is attached by manually pushing the two fixing legs 70a of the upper corner metal fitting 70 into the second slit hole 64 of the upper frame member 60.

When the upper corner metal fittings 70 are attached to the four corners of the upper frame member 60, the lower ends of the two engaging legs 70b of the upper corner metal fittings 70 engage with the outer edges of the upper frame member 60 for retaining. By attaching the upper corner metal fitting 70 as described above, the sides of the upper frame member 60 are firmly connected to each other via the upper corner metal fitting 70, and the assembly of the transport container 100 is completed.

When the upper corner metal fitting 70 is fixed to the upper frame member 60 as shown in FIG. 7, the contact portion 70c of the upper corner metal fitting 70 comes into contact with the corner portion 21 at the four corners of the side plate panel 20 from the outside as shown in FIG. 8A. As a result, the displacement of the side plate panel 20 with respect to the upper frame member 60 is regulated, the rigidity of the transport container 100 is increased, and stable strength is maintained.

On the other hand, when the contact portion 70d of the upper corner metal fitting 70 is formed at a position away from the corner portion 21 of the side plate panel 20 as shown in FIG. 8B, the side plate panel 20 is formed due to the gap formed between the side plate panel 20 and the corner portion 21. In FIG. 8B, the positions are easily displaced in the horizontal direction and the vertical direction as shown by the arrows. Then, the rigidity of the transport container 100 decreases and the strength becomes unstable.

The transport container 100 of the present embodiment has the entire transport container 100 due to the vertical strength exerted by the four middle columns 40 and the lateral displacement regulation of the side plate panel 20 by the contact portion 70c of the upper corner metal fitting 70. Achieves increased rigidity as a. Therefore, it is possible to reduce the cost by eliminating the need for the ceiling cap 3b, the floor cap 3c, and the band 4 as compared with the conventional transport container of FIG. 9 while maintaining the required strength. Further, since the lower end portion of the side plate panel 20 can be arranged in accordance with the peripheral edge portion of the base member 10, it is possible to eliminate the volume loss due to the adoption of the floor cap 3c as shown in FIG.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above embodiments and can be modified in various ways. For example, in the above embodiment, the side plate panel is made of corrugated cardboard, but the side plate panel may be made of corrugated plastic, a resin panel, or the like instead of the corrugated cardboard. Further, although the corrugated steel plate is used as the base member in the above embodiment, the base member may be formed of a resin board or the like instead of the corrugated steel plate.

Further, the middle support column 40 is arranged so as to vertically connect the central portions of the four sides of the upper frame member 60 and the central portions of the four sides of the base member 10 as in the above embodiment, and is arranged with each side of the upper frame member 60. It is also possible to vertically connect each side of the base member 10 with one or two or more middle columns 40. In particular, when the shape of the base member 10 is rectangular, the long side of the upper frame member 60 and the long side of the base member 10 may be vertically connected by two or more middle columns 40 at appropriate intervals.

100: Transport container 10: Base member 11: Lubricant 20: Side plate panel 21: Side plate panel corner part 30: Header 30a: Lower groove part 31: Bending part 32: Bending part 33: One end part 34: Other end part 35: No. 1 slit hole 36: 2nd slit hole 40: Middle strut 41: Fixed leg 41a: Slit 50: Lower corner metal fitting 50a: Fixed leg 50b: Vertical plate part 50c: Inclined plate part 50d: Slit 60: Upper frame material 60a: Upper Groove 61: Bent part 62: Both ends 63: First slit hole 64: Second slit hole 70: Upper corner metal fitting 70a: Fixed leg 70b: Engagement leg 70c: Contact part 70c: Contact part 70d: Contact part 71 : Hemispherical convex part 100: Transport container

Claims (4)

A rectangular base member with a lower groove that opens upward along all four sides,
A square tubular side plate panel in which the lower end is housed in the lower groove, and
A rectangular upper frame member having an upper groove portion for accommodating the upper end portion of the side plate panel, and
It has a middle strut that vertically connects the middle portions of the four sides of the upper frame member in the longitudinal direction and the base member .
Bendable fixed legs are arranged at the upper and lower ends of the middle strut, and the fixed legs are inserted after being inserted from the direction perpendicular to the slit holes formed in the base member and the upper frame material, respectively. A transport container characterized in that it is folded back in a direction opposite to the direction and fixed to the base member and the upper frame member . Corner metal fittings for connecting the ends of the sides of the upper frame material are arranged at each corner portion of the upper frame material, and the corner metal fittings are outside the four corners of the square tubular side plate panel. The transport container according to claim 1, wherein a contact portion that comes into contact with the container is provided. A pair of sliding members are arranged in parallel on both ends of the lower side of the base member, holes of downward openings are formed at both ends of the sliding members, and a hemisphere that can be fitted into the holes in the corner fittings. When the transport containers of claim 1 are stacked in the vertical direction by forming a convex portion, the convex portion of the corner metal fitting of the lower transport container is placed in the hole of the sliding material of the upper transport container. 2. The transport container according to claim 2, wherein the container is made capable of fitting. The transport container according to any one of claims 1 to 3 , wherein the base member is made of a steel plate and the side plate panel is made of corrugated cardboard.