JPS6221550Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial application field This invention is a returnable box with four side plates connected in a rectangular cylindrical shape that can be folded and has an open top end. This invention relates to a reinforcing frame for the upper edge of the side plate that does not need to be removed.

Prior Art When a box with an open top end is manufactured using a flat plate made of plastic cardboard, paper cardboard, foamed polystyrene molding, etc., the upper edge of each side plate of the box is shaped so that the end surface of the material is exposed as it is. Therefore, it is dangerous and there is a risk of damage.
It is necessary to cover and reinforce the upper edge. Jitsukai 1977-
Publication No. 16323 has an integrated frame that matches the shape of the upper edge of the box, Publication Utility Model Publication No. 53-6653 has a collapsible frame for stacking boxes, Publication No. 14564 of Utility Model Publication No. 14564, Publication Utility Model Publication No. 14564
Reinforcing frames for boxes are also shown in Publication No. 26273 and No. 26274 of Utility Model Publication No. 54-26274.

Problems to be Solved by the Invention In the method disclosed in Japanese Utility Model Application Publication No. 49-16323, which covers and reinforces an integral frame that matches the shape of the upper edge of the box with metal fittings, etc., the box is an empty box. The box cannot be folded even in the open state, and it has the disadvantage that it requires a large space when transporting the empty box or storing it in a warehouse or the like. Therefore, as shown in Japanese Utility Model Publication No. 53-6653, a frame body has been proposed in which corner members are attached to the upper edges of the corners of the box body so that the box body can be folded when empty. The disadvantage is that the angle holding strength is poor.

Further, a reinforcing frame capable of reinforcing the entire circumference of the mouth edge of a box with low rigidity is disclosed in Japanese Utility Model Publication No. 54-14564, but it has the drawback that it is impossible to fold an empty box.

Utility Model Publication No. 54-26273 shows a system in which the intermediate frame and the corner frame are separated, but when folding the box, the corner frame must be removed, and the corner frame itself cannot be folded. The disadvantage is that it is impossible to use and requires separate storage space.

The reinforcing frame of the box shown in Japanese Utility Model Publication No. 54-26274 has no angle holding force at the corners.

As mentioned above, there have also been proposals in which an intermediate frame is fixed to the upper edge of each side plate of the box, and in which corner members are attached to the upper edges of the corners of the box so that the box can be folded when empty. However, the structure was complicated and it took time to fold the box, and the corner angles were not maintained sufficiently during assembly, and the strength of the hinge portion was poor.

Means for Solving the Problems The present invention consists of four side plates that are cut out from a single flat plate material and arranged in series, the ends of which are joined to form a rectangular tube shape, and each side plate is folded through a crease. A cross-sectional intermediate frame is attached to the upper edge of the box, which is a returnable box with an open top end, and is fixed to the upper edge of each of the side plates, and a hinge provided at the ridge. Two foldable sides are arranged in series through the intermediate frame, and the two sides sandwich the ends of both intermediate frames fixed to the upper edges of the adjacent side plates, respectively, and each corner of the box body is A corner member is attached to the edge of the box body in a foldable and removable manner, and on both sides of the corner member, an inner plate and an outer plate for holding each of the intermediate frames are suspended in a cross-sectional shape from the upper plate. established,
Vertical support tubes are provided on the inner plates on both sides, and two legs of a brace for maintaining the corner angle when assembling the box can be fitted into the support tubes, respectively. By configuring the above-mentioned braces to be removably installed between both support cylinders, the angles of each corner of the box body can be perfectly maintained when assembling the returnable box due to the action of the above-mentioned installed braces. By applying and removing the braces, both sides of each corner member can be folded inward or opened outward, making it possible to easily fold the returnable box even when the frame is attached to the box body. In addition, it became possible to reinforce the upper edges of the side panels and the upper edges of the corners of the box body of the returnable box, and the above-mentioned problems were solved.

The corner member is easily and reliably attached to and detached from the intermediate frame to be clamped by forming a latch part to be latched to the lower end of the intermediate frame to be clamped on the inside of the lower part of the inner plate and the outer plate of the corner member. I can do it. In addition, as an embodiment of the structure in which the brace is constructed so that it can be freely attached to and removed from the support tube, the brace has legs formed at both ends thereof, and one of the legs has a length equal to or less than the length of the support tube. It's sad,
The other leg is longer than the length of the support tube, has a length that allows it to move up and down within the support tube longer than the length of the one leg, and is provided with a retaining portion at the end protruding from the bottom of the support tube. As a result, the brace is removably installed between the support cylinders on both sides of the corner member, and does not come off completely.

Furthermore, as an embodiment of the hinge portion of the corner member, in the first embodiment, the corner member attached to one diagonal position of the box body has a hinge for inward bending formed on the inside edge of the corner. The corner member installed at the other diagonal position has a hinge for opening outward on the outer edge of the corner, so that the box can be assembled and folded freely.In the second embodiment, the corner member is , the corner of the upper plate is cut into a rectangular shape, the ridge of the outer plate is cut away, the protruding sides of the outer plate are of such length that they overlap each other when the corner member is opened outward, and the inner ridge is cut out. By forming a hinge that can be folded inward and opened outward, a hinge that can be folded inward and opened outward is provided, and the box body can be assembled and folded freely.As a third embodiment, The corner member has a hinge that can be bent inward and opened outward at the outer ridge, and the inner plate and the upper plate are cut out over a predetermined width near the hinge, so that the box body can be assembled and folded freely. It is something to do.

Effects The present invention has the above-described structure, so that the upper edge of each side plate of the box body is always covered and reinforced by the intermediate frame.
In addition, the upper edges of each corner of the box body are covered and reinforced with corner members, and when assembling the box body as a returnable box, the two legs of the brace are inserted and inserted into the respective support tubes on both sides of the corner member. By constructing the structure, the angle of the corners of the box body is perfectly maintained, and when the box body is folded, by applying and removing the braces, each corner member can be folded inward or opened outward, allowing the returnable box to be folded into corners. It is now possible to fold the box even with the parts attached, and the box body can be assembled and folded as a returnable box easily and quickly, requiring less storage space when folded, and there is no chance of corner parts getting lost. It has come to be that there is no such thing.

Embodiments Hereinafter, embodiments of the present invention will be described with reference to the drawings.

As shown in FIGS. 1 and 6, the frame of the box according to the present invention consists of four side plates 2, 3, 2, 3 cut out from a single flat plate material and connected in a square tube shape. It is attached to the upper edge of the box body 1, which is a foldable, returnable box with an open top. The cross-sectional intermediate frames 4, 5, 4, 5 as shown in FIG. 3 are fixed by means 6 of FIG. As shown in FIG. The ends of both the intermediate frames 4 and 5 fixed to the upper edges of the side plates 2 and 3 are clamped, and the box body 1 is foldable and the intermediate frames 4 and 5 are attached to the upper edges of each corner of the box body 1. and corner members 7, 8, 25, 30 which are detachably attached, and both sides 11, 11 of the corner members 7, 8, 25, 30 hold the intermediate frames 4, 5, respectively. Inner plate 13
and an outer plate 14 is vertically installed in a cross-sectional shape on the upper plate 12, and vertical support cylinders 17, 17 are provided on the inner plates 13, 13 on both sides 11, 11, respectively,
Two legs 18 and 19 of a brace 16 as shown in FIG. 5 for maintaining the corner angle when the box body 1 is assembled can be fitted into the support tubes 17 and 17, respectively. The brace 16 is installed between the cylinders 17 and 17 in a manner that it can be freely attached and removed.

Both sides 1 of each corner member 7, 8, 25, 30
1, 11 inner plates 13, 13 and outer plates 14, 14
As shown in FIG. 3, the corner members 7, 8, 25, 30 are shaped like a box by forming a latching portion 24 on the lower end of the intermediate frame 4 or 5 to be latched to the lower end of the sandwiched intermediate frame 4 or 5, as shown in FIG. 1 can be detachably attached.

As shown in FIG. 5, the brace 16 has legs 18 and 19 formed at both ends, respectively.
8 and 19, the length of one leg 19 is the third
As shown in the figure, the length is equal to or less than the length of the support tube 17 to be fitted, and the length of the other leg portion 18 is
The support tube 17 of the leg portion 18 has a length that is larger than the length of the support tube 17 into which the leg portion 18 is inserted, and has a length that allows the support tube 17 to be moved up and down within the support tube 17 by more than the length of the one leg portion 19.
A retaining portion is provided at the end portion that protrudes from the bottom. In the embodiment shown in FIGS. 3 and 5, the retaining portion is formed by a pin 21 having a head 22 that is inserted into a small hole 20 formed at the lower end of the leg portion 18 and fixed therein. ing. In the first embodiment of the corner member shown in FIGS. 2 to 4, a corner member 7 dedicated to inward folding and a corner member 8 dedicated to outward opening are used, and as shown in FIG. As shown in FIG.
An inward bending hinge 9 is formed at the inner corner ridge, and the outward opening corner member 8 mounted at the other diagonal position has an outward opening hinge 9 at the outer corner ridge, as shown in FIG. 10 are formed.

As shown in FIGS. 2 and 3, the corner member 7 for inward bending is provided with a slit that reaches from the outer ridge where the side ends of the outer panels 14, 14 meet to the inner ridge. As shown in FIG. 4, the corner member 8 for opening outward extends from the inner ridge where the side ends of the inner plates 13, 13 meet to the outer ridge. A slit is provided to reach the
A hinge 10 for opening outward is formed on the outer edge.

In the normal state, each of the corner members 7 and 8 is
As shown in Figures to Figure 4, two mutually orthogonal sides 1
1, 11, and both sides 11, 11 have upper plates 12, 12 which hold the ends of the intermediate frame 4 or 5, which covers the upper ends of the side plates 2, 3 of the box body 1. ,
An inner plate 13 and an outer plate 14 are integrally formed and are vertically disposed on both side edges of the upper plate 12 and sandwich both the inner and outer side surfaces of the cross-sectional shape of the intermediate frame 4 or 5, and each side 11,
A protrusion 15 is extended above the outer panels 14, 14 of No. 11, respectively, to prevent the cargo from collapsing when stacking returnable boxes. Furthermore, the inner plate 1 on both sides 11, 11
3 and 13 have support tubes 17 and 17 near the outer edges, respectively.
17 is provided to protrude in the vertical direction. The support tube 1
Either the long or short legs 18 or 19 formed at both ends of the brace 16 are fitted into the legs 7 and 17, and the brace 16 is constructed near the outer edge between both sides 11 and 11. By doing so, the corner angle of the box 1 when assembled into a returnable box is maintained. As shown in FIG. 3, the length of the support tube 17 is approximately 1/2 of the height of the inner plate 13, and
8 has a length that is greater than the length of the leg 19 and can be moved up and down within the support tube 17 so that the other short leg 19 can be attached and detached while being fitted into and supported by the support tube 17. , the shorter leg portion 19 has a length that is the same as or shorter than the length of the support tube 17 into which it is inserted. As mentioned above, the lower end of the long leg 18 has a third
In the embodiment shown in FIG. 5, a small hole 20 is drilled, and a pin 21 having a head 22 having a diameter larger than the diameter of the leg portion 18 is inserted and fixed into the small hole 20.
A retaining portion is provided to prevent the leg portion 18 fitted into the support tube 17 from slipping out. In addition, as shown in FIG. 5, in the longitudinal direction of the back surface of the brace 16,
It is desirable that ribs 23 are protruded to reinforce the bending resistance of the brace 16.
When installed between the support tubes 17, 17,
As shown in FIG. 3, it is desirable that the upper surface of the brace 16 is set to be at the same level as the upper surface of the upper plate 12 of the corner member 7 or 8.

In order to attach the returnable box frame consisting of the aforementioned intermediate frames 4, 5 and corner members 7, 8 to the box body 1, the sixth
Assemble the bottom flaps of the folded box body 1 as shown in the figure to form a returnable box shape as shown in Figure 1,
Intermediate frame 4 on the upper edge of each side plate 2, 2, 3, 3
or 5, and use fixing tools 6, 6 to fix the intermediate frames 4, 5 to the upper edges of the side plates 2, 3.

Separately, the longer leg portion 18 of the brace 16 is fitted into one support tube 17 of each corner member 7, 8, and the lower end of the leg portion 18 is inserted from the lower end of the support tube 17 as shown in FIG. A pin 21 is attached to a small hole 20 that protrudes and is bored at the lower end, and the leg portion 18 is secured by the retaining portion formed by the pin 21.
is held in place by the support tube 17 to prevent it from coming off. In this case, the short legs 19 are not fitted into the support tube 17, and the brace 16 is rotatable about the axis of the legs 19.

The corner members 7 and 8 into which the aforementioned braces 16 are inserted are attached to each corner of the box body 1, as shown in FIGS. 1 and 6. In this case, a corner member 7 having a hinge 9 for folding inward is installed at one diagonal position of the box 1, and a hinge 10 for opening outward is installed at the other diagonal position. Attach the corner member 8. Both sides 11, 11 of each corner member 7, 8
The latch portions 24 of the inner plate 13 and outer plate 14 of
As shown in FIG. 3, after confirming that the lower end of the intermediate frame 4 or 5 is secured, lift the brace 16 upward as shown by the chain line in FIG. The other short leg 19 is positioned directly above the support tube 17, and the brace 16 is lowered at that position.
As shown by solid lines in the figure, the leg portion 19 is fitted into the support tube 17, and the brace 16 is installed on each corner member 7, 8, respectively. Elongated legs 18 of brace 16
Since a retaining portion is formed at the lower end of the support tube 17, even if the brace 16 is raised, it will not come off from the support tube 17. By doing as above,
Inner plate 1 on both sides 11, 11 of each corner member 7, 8
By installing braces 16 between 3 and 13, the angle (90°) of the corner portion of the returnable box is perfectly maintained. Further, since the upper edge of the box body 1 is entirely covered and reinforced by the intermediate frames 4 and 5 and the corner members 7 and 8, damage such as peeling and cracking of the upper edge of the box body 1 is prevented. Furthermore, each corner member 7,
The protrusion 15 provided above the outer panel 14 of No. 8 can prevent the stacked returnable boxes from moving back and forth and left and right when stacking the returnable boxes, so even when stored in a warehouse, Even during transportation, the load will not collapse.

When folding the box body 1 assembled as a returnable box as shown in FIG. 1 as shown in FIG. 6, each brace 16 of the corner members 7 and 8 is raised as shown by the chain line in FIG. Then, remove the short legs 19 from the support cylinder 17, release the corner members 7 and 8 from holding the angles of the corner portions of the box 1, and unassemble the bottom flaps of the box 1 as shown in FIG. , after unfolding each of the bottom flaps in the downward extension direction of each of the side plates 2 or 3 that are connected to each other, the corner member 7 for inward folding is folded around the hinge 9 as shown by the chain line in FIG. On the other hand, the corner member 8 for opening outward is
As shown by the chain line in FIG. 4, it is unfolded around the hinge 10, and as shown in FIG. 6, the box 1 is folded into a substantially flat shape. As described above, the box body 1 can be easily folded by uninstalling the brace 16 while the corner members 7 and 8 are still attached.

Next, the second corner member shown in FIGS.
An example will be described below. The corner member 25 can be folded inward or opened outward, and has both sides 11,
A hinge 26 that can be folded inward and opened outward is formed on the inner edge of 11, and the upper plate 12 of both sides 11, 11,
As shown in FIG. 7, a substantially rectangular notch 27 is provided at the corner of 12, leaving the outer plate as protruding pieces 14a and 14b, respectively, and the outer plate on both sides 11 and 11 are cut out at the ridge. The protruding pieces 14a, 14 are separated.
The length b is such that the corner members 25 overlap each other when opened outward, as shown in FIG. In the illustrated example, when the length of the protruding piece 14b is made longer than the length of the protruding piece 14a and the corner member 25 is opened outward, the protruding piece 1 having a shorter length
4a overlaps the inside of the other long protruding piece 14b within the notch 27, as shown in FIG. 8, and the corner member 25 can be opened outward without causing any interference. Also in the corner member 25, both sides 11,
The inner plates 13 and 13 of the brace 16 have long and short legs 18 and 1 of the brace 16, respectively, as in the first embodiment.
Support tubes 17 and 17 into which the braces 9 are fitted are provided, and when the brace 16 is installed,
The corner angle of each corner of the returnable box is reliably maintained at 90°.

When the corner member 25 is provided with a brace 16, the corner member 25 is attached to a hinge 26 as shown by the chain line in FIG.
It can be folded inward with the center of rotation as the center of rotation, and it is also possible to open both sides 11, 11 outward with the center of rotation of the hinge 26 as shown in FIG.

Describing the third embodiment of the corner member shown in FIG. 9, the corner member 30 is provided with a hinge 28 on the outer ridge portion that can bend inward and open outward.
The inner plate 13 and the upper plate 12 are cut out over a predetermined width near the hinge 28 to form a large diagonal notch 29, which connects the brace 16 and both sides 11, 11.
When the installation is removed, both sides 1 as shown by the chain lines in the figure
1 and 11 can be bent inward or opened outward, and when the brace 16 is installed,
The corner angle of each corner of the returnable box is reliably maintained at 90°.

Effects of the invention The frame of the returnable box of the present invention has the structure described in claim 1 of the utility model registration, so that
The side plates are arranged in a rectangular tube shape and are attached to the upper edge of the box, which is a foldable, returnable box with an open top.
A cross-sectional intermediate frame that holds the upper edge of each of the side plates and is fixed to the upper edge, and two sides that are freely foldable via a hinge provided at the ridge are provided in series;
Both sides sandwich the ends of both intermediate frames fixed to the upper edges of the adjacent side plates, and the box body is foldably and removably attached to the upper edge of each corner of the box body. The corner members prevent the upper edge of the box from deforming or breaking, extending the life of the box as a returnable box. There are braces that can be easily installed on both sides and easily removed when folding the box, so in conjunction with the hinges, when assembling the box as a returnable box, the braces can be installed to secure the corners of the returnable box. The 90° angle of the frame is perfectly maintained, and by removing the brace when folding the box, each corner member can be folded inwards or opened outward, and the frame made of the intermediate frame and corner members It is possible to assemble the box body into a returnable box and fold it flat with the box attached, and it has various effects such as not requiring a large space for storing and transporting an empty returnable box.

Furthermore, by forming the latching portions described in claim 2 of the utility model registration claim on the inner and outer plates of each corner member, each corner member is latched to the lower end of each intermediate frame, The corner members are reliably engaged with the upper edges of each corner of the box, and removal is also extremely easy, making it extremely easy to attach and remove the corner members to and from the box. By removing the corner members from the box, the box becomes completely flat, requiring less storage space, and is easy to install. This allows the box to maintain its shape as a returnable box, and the corners of the top edge of the box can be flattened. This has the effect of reliably preventing damage.

By adopting the configuration of the brace as described in Claim 3 of the utility model registration, the brace can be attached and detached from the corner member very easily, and since the brace is always locked to the corner member, it is easy to assemble the returnable box. Since the braces are held close to the erection position, there is no risk of them being lost, and the assembly of the box,
Folding can be done very easily.

Any of the corner members described in claim 4, 5, or 6 of the utility model registration claim can achieve the above-mentioned effects.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of the assembled box of the embodiment as a returnable box, Fig. 2 is a plan view of the corner member for inward folding of the first embodiment of the corner member, and Fig. 3 is an elevational view of the same. Fig. 4 is a plan view of the corner member for opening outward, Fig. 5 is an elevation view of the brace, Fig. 6 is a perspective view of the box of the embodiment when folded, and Fig. 7 is the second corner member of the corner member. FIG. 8 is a plan view showing the same outwardly opened state, and FIG. 9 is a plan view of the third embodiment of the corner member.
FIG. 1: Box body, 2, 3: Side plate, 4, 5: Intermediate frame,
6: Fixing tool, 7, 8, 25, 30: Corner member,
9, 10, 26, 28: Hinge, 11: Side, 1
2: Upper plate, 13: Inner plate, 14: Outer plate, 16: Brace, 17: Support cylinder, 18, 19: Legs, 21:
Pin, 24: Latch portion, 27, 29: Notch portion.

Claims (1)

[Claims for Utility Model Registration] 1. Four side plates that are cut out from a single flat plate material and arranged in series are joined at their ends to form a rectangular tube shape, and each side plate can be folded through a crease. In returnable boxes with an open top,
The side plates are foldable through four cross-sectional intermediate frames that extend over the entire length of the upper edge of each side plate and are fixed to the upper edge, and a thin vertical hinge provided at the ridge. The two sides of the box body are integrally connected, and the two sides of the box body are held astride each end of both intermediate frames, which are fixed to the upper edges of the adjacent side plates. There are four corner members attached to the upper edge of each corner of the box body so that the box body can be folded and detached, and on both sides of the corner members, an inner plate and an outer plate that sandwich the intermediate frames, respectively. is vertically disposed on the upper plate in a cross-sectional shape, and latch portions that can be hung on the lower edge of the intermediate frame are provided on the inner side of the lower ends of the inner plate and the outer plate, respectively, and on the inner plates on both sides of the Each of the support tubes is provided with a vertical support tube, into which two leg portions of a brace for maintaining the corner angle when assembling the box can be inserted, respectively, and the brace has legs at each end thereof. one of the legs has a length equal to or less than the length of the support tube, and the other leg has a length greater than the length of the support tube and longer than the length of the one leg. The length is such that it can be moved up and down within the cylinder, and a retaining part is provided at the end protruding from the lower part of the support cylinder, and the brace is installed between both the support cylinders in a manner that it can be freely applied and removed. The frame of a returnable box is characterized by: 2 Among the corner members, the corner member attached to one diagonal position of the box body has a hinge for inward bending formed on the inside edge of the corner, and the corner member attached to the other diagonal position is a corner member. A frame for a returnable box according to claim 1, wherein a hinge for opening outward is formed on the outer edge. 3. The corner member shall have a top plate with a corner cut out in a square shape, a ridge of the outer plate cut away, and the protruding sides of the outer plate of such length that they overlap each other when the corner member is opened outward, and A frame for a returnable box according to claim 1, which has a hinge formed on the inner ridge that can be folded inward and opened outward. 4. The corner member has a hinge that can be bent inward and opened outward at the outer ridge, and the inner plate and the upper plate are cut out over a predetermined width near the hinge. Claim 1 of the Utility Model Registration Claim The frame of a returnable box.