JPS6221551Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial application field This invention can be unfolded and stored flat when not in use.
The present invention relates to a corner member of a box body of a returnable box that is convenient for transportation and can be assembled repeatedly at the time of use.

Prior Art Of the assembled boxes that are returnable boxes, the assembled boxes to which the corner members of the present invention are applied are made of cardboard,
It is made of a single plate such as a synthetic resin plate or a hollow synthetic resin plate, and has side plates on the four peripheries of a rectangular bottom plate, and flaps that can be bent and stretched on both side edges of a pair of opposing side plates. When assembled, an intermediate frame for reinforcement is fixed to the upper edge of each side plate, and a corner member is attached to the upper edge of the corner between adjacent side plates to form an assembled box. If the assembled box with the above configuration is not used as a return box,
The intermediate frame and corner members were removed, the box was unfolded, and the box was stored or transported in a flat shape. However, the frames of conventional assembled boxes, which are transportable boxes, are complicated in structure, for example, as shown in Japanese Utility Model Publication No. 54-14564, which describes an auxiliary frame for a box.
It takes time and effort to attach and remove the intermediate frame, etc., and the corner members are not properly attached, so there is a high risk that they will be lost during storage or transportation after removal.

In addition, Japanese Utility Model Publication No. 54-26273 discloses a ``box auxiliary frame,'' in which the box body is unfolded while the intermediate frame is fixed to the upper edge of each side plate, which eliminates the trouble of mounting during assembly. Although a box body was devised, the corner members were separated, and there was still a risk of them being lost during storage or transportation.

Problems to be Solved by the Invention The present invention is always attached to the box body, the corners can be fixed when the box body is assembled, and the box body does not require space to store or transport when it is unfolded. It has a configuration in which flaps are connected to both side edges of a pair of side plates, with side plates facing the four peripheral edges of the bottom plate.
By providing removable corner members of the assembly box, the above-mentioned difficulty in assembling and unfolding the passable box, as well as problems in storing and transporting the box and the corner members, etc., are solved.

Means for Solving the Problems In the present invention, two sets of side plates are arranged symmetrically on each of the four peripheral edges of a rectangular bottom plate, and engaging flaps are provided on both side edges of one set of side plates facing each other among the side plates. are symmetrically arranged in series, and the flaps can be brought into contact with and superimposed on the other pair of opposing side plates when assembling the shipping box, and the upper edge of each of the side plates is connected to the upper edge of the pair of side plates, respectively. A narrow intermediate frame for covering and reinforcing and a wide intermediate frame for covering and reinforcing the upper edge of the polymer of the other pair of side plates and flaps are attached,
In a corner member used for a box body of a transportable box that can be developed into a flat shape and assembled into a box shape, two sets of corner members on opposite sides are attached to the side plate of the one set to which the flap is connected. The corner members are rotatably locked to both ends of a narrow intermediate frame attached to the upper edge, and the left and right locking portions of the corner members are integrally connected via bendable hinges. is,
One of the two locking portions has an inner plate, an outer plate, and an upper side shaped like a U to hold the narrow intermediate frame, and the other locking portion has an inner plate, an outer plate, and an upper side. The plate and its upper side are U-shaped and capable of holding the wide intermediate frame, and a protruding portion extends upward from each of the outer plates. The ends closer to each hinge are used as overlapping locking pieces, and the overlapping locking pieces have surfaces that are overlapped and locked above and below each other when the above-mentioned locking parts are bent at right angles to each other at the hinge. Low overlapping protrusions are protruding to be overlappingly locked to each other, and one of the locking portions is provided with a pin hole that is rotatably locked to the end of the narrow intermediate frame. By configuring the other locking portion to have a low protrusion protrudingly provided on the inner surface of the inner plate and outer plate at a position to be locked to the lower edge of the wide intermediate frame to be held, This solves the above-mentioned problems.

Operation With the above-mentioned configuration, two sets of side plates are symmetrically connected to each of the four peripheral edges of the bottom plate, and engaging flaps are symmetrically connected to both side edges of one pair of opposing side plates, so that the corner members of the assembled box are constantly engaged with the box body. The corner members are extremely easy to attach and detach when assembling and unfolding the box body, the fitting condition is good, and they will not get lost even after the box body is unfolded. The empty box can also be easily unfolded, and the box can be unfolded in a flat shape.

Embodiments The embodiments shown in the drawings will be described below.

In the present invention, as shown in FIGS. 6 and 9, two sets of side plates 2, 2, 3, and 3 are arranged symmetrically on each of the four peripheral edges of a rectangular bottom plate 7, and one set of side plates facing each other among the side plates is arranged symmetrically. Engagement flaps 8, 8 are arranged symmetrically on both side edges of the side plates 2, 2, respectively, and as shown in FIG. , 3, and the upper edges of each of the side plates 2, 2, 3, 3 are coated and reinforced with the upper edges of the pair of side plates 2, 2, as shown in FIG. As shown in FIG. 8, a wide intermediate frame 5 is attached to cover and reinforce the upper edge of the polymer of the narrow intermediate frame 4 and the other pair of side plates 3 and flaps 8. As shown in FIG. 9, it is a corner member used in a box body 1 of a transportable box that can be developed into a flat shape and as shown in FIG. 6, which can be assembled into a box shape. Figure 11,
It consists of a corner member 18 as shown in FIG. 12 and a corner member on opposite sides that is completely symmetrical to the corner member 18.

Only the illustrated corner members will be described below.

The corner member 18 shown in FIG.
As shown in FIG. 5, the locking portion 19 and the locking portion 20 are integrally connected via a bendable hinge 24. The locking portion 19 has an inner plate 21, an outer plate 22, and an upper side 23 that are connected in a U-shape so as to be able to clamp an intermediate frame 4, which will be described later, and the outer plate 22 extends above the upper side 23. A protrusion 25 is formed.

The end of the upper side portion 23 closer to the hinge 24 is an overlapping locking piece 31, and an overlapping projection 33 is formed on the lower surface, and the lower surface of the overlapping projection 33 is directed toward the end closer to the hinge 24, as shown in FIG. It has an upwardly sloped surface and is formed with an overlapping recess 35 that engages with an overlapping protrusion 34 which will be described later.

Further, pin holes 37 and 38 are formed at the same positions in the elevational view shown in FIG. 2 of the inner plate 21 and the outer plate 22, respectively, and
As will be described later, when the corner member 18 rotates around the pin holes 37 and 38, the corner member 18 is removed within a range that does not interfere with the intermediate frame 4 held therebetween, thereby forming a cutout portion 23'. and said outer panel 2
A locking protrusion 39 as an extension of the upper side part 23 is provided on the inner surface of the upper side part 23, and a U-shaped inner surface formed by the inner plate 21, the outer plate 22, and the upper side part 23 has a
A projecting piece 10 connected to the inner plate 21, outer plate 22 and upper side 23 is provided to protrude, and the inner plate 21
The portion near the hinge 24 is removed within a range that does not interfere with the inner plate 27 of the locking portion 20, which will be described later, when assembling the box, forming a removed portion 21'.

The locking portion 20 has an inner plate 27, an outer plate 28, and an upper side portion 29 that can hold an intermediate frame 5, which will be described later.
They are arranged in a U-shape, and the outer plate 28 extends above the upper side 29 to form a protrusion 30.

The protrusion 30 is connected to the protrusion 25 at the same height via a hinge 24, and the outer plate 2
8 and the outer plate 22 are similarly connected via a hinge 24.

The end of the upper side portion 29 close to the hinge 24 is an overlapping locking piece 32, and an overlapping projection 34 is formed on the upper surface, and the upper surface of the overlapping projection 34 is connected to the end closer to the hinge 24, as shown in FIG. It is a downwardly sloped surface, and an overlapping recess 36 that engages with the above-mentioned overlapping protrusion 33 is formed.

The U-shaped inner surface formed by the inner plate 27, outer plate 28, and upper side 29 also has a protruding piece 10 connected to the inner plate 27, outer plate 28, and upper side 29.
is provided protrudingly, and the portion of the inner plate 27 near the hinge 24 is removed within a range that does not interfere with the inner plate 21 of the locking portion 19 when assembling the box, forming a removed portion 27'. A protrusion 26 that can clamp and lock the lower edge of the intermediate frame 5 is provided protruding near the lower edge of the U-shaped inner surface of the outer plate 28, as will be described later.

The overlapping projections 33 of the above-mentioned overlapping locking pieces 31 and 32,
Of course, the protruding direction of 34 may be upside down from the illustrated example.

The above-mentioned hinge 24 is formed at a position where the locking parts 19 and 20 are connected to each other as shown in FIG.
and is formed thinner than the protrusions 25 and 30.

As shown in FIG.
9 and 20 are required, and two sets each are required.

Next, the attachment of the corner member 18 to the box body 1 will be described.

When storing and transporting box 1 as an empty box,
As shown in Figure 9, it is in an expanded form.
The box body 1 is made of a plate-like body, and two sets of side plates 2, 2 and 3, 3 are symmetrically connected to the four peripheral edges of a rectangular bottom plate 7, and one of the side plates facing the other
Engagement flaps 8, 8 are symmetrically arranged on both side edges of the pair of side plates 2, 2, respectively.

An intermediate frame 4 is secured to the upper edge of the side plate 2, and an intermediate frame 5 is secured to the upper edge of the side plate 3.

The intermediate frame 4 has an inner plate 1 as shown in FIG.
1. The upper side part 13 and the outer plate 12 are formed in a U-shape and are connected to each other, and are fixed to the outer edge of the side plate 2 with fasteners 6 such as rivets, as shown in FIG.

Further, as shown in FIGS. 8 and 10, the intermediate frame 5 has an outer plate 16 and an upper side 14 connected in an L-shape, and an inner plate 15 on the inner edge of the upper side 14.
7, and is fixed to the outer edge of the side plate 3 in the outer plate 16 by a fixing member 6. When assembling the box body 1, the inner plate 15 is bent to a position 15a shown by a chain line, and covers and reinforces the outer edges of the polymer of the side plate 3 and the flap 8, as shown in FIG. Therefore, the upper side 14 of the intermediate frame 5
is larger than the width of the upper side 13 of the intermediate frame 4.

Corner member 18 as shown in FIGS. 6 and 9
are drilled into the inner plate 21 and outer plate 22 of the locking portion 19 at both ends of the intermediate frame 4 at positions where the hinges 24 approximately match the connecting line 41 between the side plate 2 and the flap 8. It is rotatably engaged with the side plate 2 in a parallel direction through pins 40 passing through pin holes 37 and 38.

Note that the upper edges of the side plates 2, 3 and the flap 8 are provided with notches 9 into which the protruding pieces 10 of the locking parts 19, 20 of the corner member 18 are fitted, as shown in FIGS. 9 and 12. It is being

Next, the assembly of the box 1 will be described.

Each corner member 18 of the unfolded box body 1 shown in FIG. 9 is rotated outward around the pin 40, and the flap 8
The inner plate 15 of the intermediate frame 5 is folded into the flap 8 as shown in FIG. Next, the locking portion 20 of each corner member 18 is bent inward at right angles at the hinge 24, the overlapping locking pieces 31 and 32 are overlapped, and the overlapping protrusion 33 is inserted into the overlapping recess. 36, the overlapping protrusion 34 is locked in the overlapping recess 35, and as shown in FIGS.
As shown in FIG. 2, each protrusion piece 10 is fitted into a notch 9 recessed in the outer edge position of the opposing side plates 2, 3 or flap 8, and the end of the intermediate frame 4 is secured by the locking part 19. , the corner member 18 is pushed in while rotating around the pin 40 to a position where the locking portion 20 covers and abuts the end of the intermediate frame 5 . In this pushed-in position, as shown in FIG. 12, the locking protrusion 39 and the intermediate frame 4 come into contact, and the lower edge of the intermediate frame 5 and the protrusion 26 are engaged and held. In this way, the assembly of the shipping box is completed as shown in FIG.

During the rotation of the corner member 18 around the pin 40, the locking protrusion 39 comes into sliding contact with the outer surface of the intermediate frame 4,
At the completed assembly position of the carrying case, it is hooked to the upper side 13 of the intermediate frame 4, as shown in FIGS. 11 and 12.

When unfolding the box body 1, the inner plate 27 and outer plate 28 of the locking portion 20 of each corner member 18 are slightly opened to release the engagement between the lower edge of the intermediate frame 5 and the protrusion 26, and then The box 1 is unfolded in the reverse order, and the corner member 18 is housed in a position where it abuts the outer edge of the side plate 2 and the flap 8, as shown in FIG. 9, and the unfolding is completed.

During assembly as shown in FIG. 6, the corner members 18 serve to form the assembled box body 1 by sandwiching the ends of the intermediate frames 4 and 5 at each corner, and in particular, as shown in FIG. As shown, the engagement between the lower edge of the intermediate frame 5 and the protrusion 26 ensures the retention of the assembled box body 1, and the protrusions 25 and 30 ensure that the assembled box body 1 is in a stacked state. Helps with retention.

Note that the protruding piece 10 is connected to the inner plate 21 of the locking part 19,
The purpose is to maintain the U-shape of the outer plate 22 and the upper side 23, and to maintain the U-shape of the inner plate 27, outer plate 28, and upper side 29 of the locking part 20, but the projection piece 10, the side plate 2, 3 and flap 8 notch 9
The fitting also helps in assembling and maintaining the box body 1.

Further, the corner member 18, as shown in FIG.
When unfolded, it is stored in a position that abuts the outer edges of the side plate 2 and flap 8, protects both outer edges, maintains the unfolded position of the side plate 2 and flap 8, and is also useful for storing and transporting the unfolded box 1. It doesn't get in the way and there's no risk of losing it.

Effects of the invention The present invention has the structure described in the claims for utility model registration, and is always attached to the box. When assembling the box, each side plate and flap are attached to the intermediate frame at each corner. The box shape is held securely through the engagement of the protrusions provided on the U-shaped inner lower surface of the inner plate and outer plate of the locking part with the lower edge of the intermediate frame to be held. At the same time, the protrusion extending above the outer panel makes it possible to maintain the loading posture when the assembled boxes are stacked in several layers, and when the boxes are unfolded. In addition to helping to maintain the deployed posture of the side plates and flaps of the deployment box, the storage position does not require extra space for storing and transporting the deployment box.
Moreover, since it is always attached to the box, it is extremely easy to assemble and unfold the box, and there is no risk of losing it, and it has various effects that are suitable for boxes that are used repeatedly as returnable boxes. It is.

[Brief explanation of the drawing]

Fig. 1 is a plan view of the embodiment, Fig. 2 is an elevation view of the same, Fig. 3 is a side view in the direction of the arrow in Fig. 2, Fig. 4 is a side view in the direction of the arrow in Fig. 2, and Fig. 5 is the hinge. FIG. 6 is a perspective view of the box assembly; FIG. 7 is an enlarged partial sectional view taken along the line in FIG.
Figure 9 is an enlarged partial cross-sectional view of the box, Figure 10 is an enlarged partial cross-sectional view of the box in Figure 9, Figure 11 is an enlarged plan view of the corner of the box, and Figure 12 is an enlarged partial cross-sectional view of the corner of the box.
The figure is a sectional view taken along the line XII-XII in FIG. 11. 1: Box body, 2, 3: Side plate, 4, 5: Intermediate frame,
7: Bottom plate, 8: Flap, 17: Hinge, 18:
Corner member, 19, 20: Locking portion, 21, 27:
Inner plate, 22, 28: Outer plate, 23, 29: Upper side,
24: Hinge, 25, 30: Projection, 31, 3
2: Overlapping locking piece, 33, 34: Overlapping protrusion, 37,
38: Pin hole.

Claims (1)

[Scope of utility model registration request] Two sets of side plates are arranged symmetrically on each of the four peripheral edges of the rectangular bottom plate, and engaging flaps are arranged symmetrically on both side edges of one pair of side plates facing each other among the side plates. The flaps are capable of contacting and superimposing on the other set of opposing side plates, and the upper edge of each side plate is provided with a narrow intermediate frame that covers and reinforces the upper edge of the set of side plates. A corner used in the box body of a transportable box that is attached to a wide intermediate frame that covers and reinforces the upper edge of a polymer of a pair of side plates and flaps, and that can be unfolded into a flat shape and assembled into a box shape. In the member, two pairs of corner members on opposite sides are rotatably locked to both ends of a narrow intermediate frame attached to the upper edge of the pair of side plates to which the flap is connected. In the corner member, the left and right locking portions are integrally connected via a bendable hinge, and one of the locking portions is connected to the inner plate, the outer plate, and the upper side. The other locking part has a U-shaped shape that can hold the narrow intermediate frame, and the other locking part has an inner plate, an outer plate, and an upper side that have a U-shape that can hold the wide intermediate frame. , and a protruding portion extends upwardly from each of the outer plates, and furthermore, the ends of the upper sides of both of the locking portions closer to the hinges are used as overlapping locking pieces, and the overlapping locking pieces include the above-mentioned overlapping locking pieces. When both the locking parts are bent at right angles to each other at the hinge, the surfaces that overlap and lock each other vertically,
Low overlapping protrusions are protruding from each other to be overlappingly locked to each other, and one of the locking portions is provided with a pin hole that is rotatably locked to the end of the narrow intermediate frame, The other locking part is characterized in that a low protrusion is provided on the inner surface of the inner plate and the outer plate at a position to be locked to the lower edge of the wide intermediate frame to be held. Corner parts of the assembled box.