JP2022044116A - tray - Google Patents

Abstract

To provide a tray on which other a tray and a box body can be stably stacked even after a cross plate provided on the upper edge of an end wall is cut and opened.SOLUTION: A tray 1 includes: front and rear end walls 20, 20 connected to a bottom plate 10; left and right outside walls 30, 30; and a cross plate 50 projecting toward inside from the upper edge of each end wall 20. Each cross plate 50 has: left and right support parts 51, 51 formed at both left and right ends thereof; and a cut-off part 52 formed between both the support parts 51, 51. The cut-off part 52 and the end wall 20 are connected via a first cutting guideline L11, and the cut-off part 52 and both the support parts 51, 51 are connected via left and right second cutting guidelines L12, L12.SELECTED DRAWING: Figure 1

Description

The present invention relates to a tray.

The corrugated cardboard tray includes a bottom plate, front and rear end walls connected to the edge of the bottom plate, left and right side walls, and a crosspiece protruding inward from the upper edge of the end wall. And the corrugated board are connected in series via a cutting guide wire (for example, Patent Document 1).

In the tray described above, since a part of the contents is covered with the crosspiece, it becomes difficult for the contents to pop out from the tray. Further, when stacking another tray on the tray described above, the other tray can be supported by the upper surface of the crosspiece plate.
When the contents are taken out from the tray described above, the contents can be easily taken out from the tray by cutting open the cutting guide wire and separating the entire crosspiece from the end wall.

Japanese Patent No. 6413928

The conventional tray described above has a problem that it is difficult to stabilize the other trays when the other trays are stacked after the crosspiece is separated from the end wall.

An object of the present invention is to solve the above-mentioned problems and to provide a tray capable of stably stacking other trays and boxes even after the crosspiece provided at the upper edge of the end wall is cut open. do.

In order to solve the above problems, the present invention is a tray in which an upper opening is formed, and the bottom plate, front and rear end walls connected to the front and rear edges of the bottom plate, and left and right of the bottom plate. It is provided with left and right side walls connected to the edge portion, and a cross plate protruding inward from the upper edge portion of the end wall. The crosspiece is formed with left and right support portions formed at both left and right ends and a cut portion formed between the two support portions. The cut portion and the end wall are connected to each other via a first cutting guide wire, and the cut portion and both supporting portions are connected to each other via a second cutting guide wire on the left and right.

When the contents are taken out from the tray of the present invention, the first cutting guide wire and the second cutting guide wire are cut open to separate the cut portion from the cross plate. By cutting open the middle portion of the crosspiece in this way, it becomes easy to take out the contents from the tray.
In the tray of the present invention, even if the crosspiece is cut open, the support portion remains in the upper surface opening. Therefore, by supporting the other tray or box body on the upper surface of the support portion, the other tray or box body can be stably supported. Can be stacked.

In the tray described above, a recess recessed downward is formed in the upper edge portion of the end wall, and a lid plate closing the recess is formed in the cut portion, and the recess and the lid plate are formed. Is preferably connected via a third cutting guide wire.

In this configuration, when the cut portion is separated from the crosspiece plate, the lid plate can be first pushed inward from the outside to cut open the third cutting guide wire. Then, by inserting the operator's finger into the opened recess and pulling up the cut portion, the first cutting guide wire and the second cutting guide wire can be easily cut open and the cut portion can be separated from the crosspiece.

The tray is connected to an inner flap that is connected to the left-right edge of the end wall and is overlapped on the inner surface of the side wall, and an inner flap that is connected to the upper edge of the side wall and is overlapped on the inner surface of the inner flap. The inner side wall provided may be provided. In this case, an extension plate is continuously provided at the left-right edge portion of the cross plate, and the base end portion of the extension plate is bent downward with respect to the cross plate to form the extension plate. It is preferable that the portion on the tip end side is folded back in the front-rear direction with respect to the base end portion, and the extension plate is sandwiched between the side wall and the inner side wall.

In this configuration, when the cut portion is pulled up in an attempt to separate the cut portion from the cross plate, the extension plate is caught on the inner surface of the folded portion between the side wall and the inner side wall, so that the left and right ends of the cross plate are separated. The upward movement is suppressed. As a result, the cut portion can be easily pulled upward with respect to the left and right ends of the cross plate, so that the cut portion can be easily separated from the cross plate.

In the tray described above, it is preferable to form a connecting piece at the tip of the extension plate, open a connecting hole in the inner flap, and insert the connecting piece into the connecting hole.

In this configuration, the connecting piece of the extension plate is engaged with the connecting hole of the inner flap to prevent the inner flap from returning when the tray is assembled. This eliminates the need for the operator to manually press the inner flap, so that the tray can be easily assembled.

In the tray of the present invention, the contents can be easily taken out by separating the cut portion from the cross plate. Further, in the tray of the present invention, even if the crosspiece is cut open, the support portion remains in the upper surface opening, so that other trays and boxes can be stably stacked.

It is a perspective view which looked at the tray which concerns on embodiment of this invention from the front upper right. It is a figure which showed the blank sheet of the tray which concerns on embodiment of this invention. It is an enlarged perspective view which showed the state before folding back the extension plate in the procedure of assembling the tray which concerns on embodiment of this invention. It is an enlarged perspective view which showed the state which the extension plate was folded back in the procedure of assembling the tray which concerns on embodiment of this invention. It is a perspective view which showed the state which the cut part was separated from the rail plate of the tray which concerns on embodiment of this invention.

Embodiments of the present invention will be described in detail with reference to the drawings as appropriate.
In the following description, the front-back and left-right directions are set for convenience in explaining the tray of the present embodiment, and do not limit the configuration and usage state of the tray.

As shown in FIG. 1, the tray 1 of the present embodiment is connected to the bottom plate 10, the front and rear end walls 20 and 20 connected to the front and rear edges of the bottom plate 10, and the left and right edges of the bottom plate 10. The left and right outer walls 30 and 30 are provided. Further, the tray 1 has inner flaps 21 and 21 connected to the left and right edges of the end wall 20, inner side walls 40 connected to the upper edge of the outer wall 30, and front and rear end walls 20, 20. The front and rear stiles 50 and 50 projecting inward from the upper edge, respectively, are provided.

As shown in FIG. 2, the tray 1 of the present embodiment is formed by folding a blank sheet S obtained by cutting out a corrugated cardboard sheet into mountain folds or valley folds at each polygonal line. The blank sheet S shown in FIG. 2 is arranged so that the inner surface side can be seen.
The polygonal line of the blank sheet S is a ruled line (pressed ruled line) formed by linearly pressing the surface of the blank sheet S. In addition, an intermittent notch may be formed in the ruled line. By doing so, it becomes easy to bend the blank sheet S at the polygonal line.
Further, a polygonal line may be formed by intermittently forming a half-cut notch that cuts only the surface of the sheet or a notch that penetrates the sheet to form a linear shape.

Each cutting guide line formed on the blank sheet S is a perforated line in which a notch is intermittently formed. The shape and length of the notch are not limited. Further, in each drawing showing the tray 1 assembled from the blank sheet S, the shape of the notch of each cutting guide line is shown in a simplified manner in order to clearly show the structure of the tray 1.

As shown in FIG. 1, the bottom plate 10 is formed in a quadrangle shape. Front and rear end walls 20 and 20 are connected to the front and rear edges of the bottom plate 10, and left and right outer walls 30 and 30 are connected to the left and right edges of the bottom plate 10 (see FIG. 2). ..
As shown in FIG. 2, fixing holes 11 are formed on the left and right edges of the bottom plate 10, and front and rear engaging holes 12 and 12 are formed on both front and rear sides of the fixing holes 11.

As shown in FIG. 1, the front end wall 20 is connected to the front edge portion of the bottom plate 10 via a polygonal line, and extends upward from the front edge portion of the bottom plate 10. The rear end wall 20 is continuously provided to the trailing edge of the bottom plate 10 via a polygonal line, and extends upward from the trailing edge of the bottom plate 10. The front and rear end walls 20, 20 are formed in the same quadrangular shape. The front and rear end walls 20 and 20 are formed perpendicular to the bottom plate 10.

A recess 25 recessed downward is formed in the central portion of the upper edge portion of the end wall 20. The recess 25 is formed in a trapezoidal shape in which the width in the left-right direction becomes narrower from the upper end to the lower end.

As shown in FIG. 3, an inner flap 21 on the front right side is continuously provided on the right edge portion of the front end wall 20 via a polygonal line. The right front inner flap 21 extends rearward from the right edge of the front end wall 20. The right front inner flap 21 is arranged along the right edge of the bottom plate 10.

On the right edge of the rear end wall 20, a right rear inner flap 21 is continuously provided via a polygonal line. The right rear inner flap 21 extends forward from the right edge of the rear end wall 20. The right rear inner flap 21 is arranged along the right edge of the bottom plate 10.

The length of the inner flap 21 in the front right in the front-rear direction is formed to be larger than half the length of the right edge portion of the bottom plate 10. Further, the length of the inner flap 21 at the rear right in the front-rear direction is formed to be larger than half the length of the right edge portion of the bottom plate 10. The tip end portion (rear end portion) of the inner flap 21 on the right front side and the tip end portion (front end portion) of the inner flap 21 on the right rear side are overlapped in the left-right direction (inner-outer direction).

A slit 21a extending upward from the lower edge is formed at the tip of the inner flap 21 on the front right, and the tip of the inner flap 21 on the rear right extends downward from the upper edge. The existing slit 21b is formed (see FIG. 2).
Then, by combining the slit 21a of the inner flap 21 on the front right and the slit 21b of the inner flap 21 on the rear right, the tip portion of the inner flap 21 on the front right and the tip portion of the inner flap 21 on the rear right are connected. ing.

Connecting holes 21c and 21c are opened in the inner flap 21 on the front right side and the inner flap 21 on the rear right side, respectively. The connecting hole 21c is a quadrangular opening.

As shown in FIG. 1, the left front inner flap 21 is connected to the left edge of the front end wall 20, and the left rear inner flap 21 is connected to the left edge of the rear end wall 20. It is set up.
The left front inner flap 21 and the left rear inner flap 21 have the same configuration as the right front inner flap 21 and the right rear inner flap 21. The tip of the inner flap 21 on the front left and the tip of the inner flap 21 on the rear left are connected. Further, connecting holes 21c and 21c are opened in the inner flap 21 on the left front side and the inner flap 21 on the left rear side, respectively.

The outer wall 30 on the right side is connected to the right edge of the bottom plate 10 via a polygonal line, and extends upward from the right edge of the bottom plate 10. The outer wall 30 on the left side is continuously provided to the left edge portion of the bottom plate 10 via a polygonal line, and extends upward from the left edge portion of the bottom plate 10. The left and right outer walls 30, 30 are formed in the same quadrangular shape. The left and right outer walls 30 and 30 are formed perpendicular to the bottom plate 10.

An intermediate plate 31 is continuously provided in the middle portion of the upper edge portion of the outer wall 30 on the right side via a polygonal line. The intermediate plate 31 is formed in a band shape along the upper edge of the outer wall 30. The intermediate plate 31 extends inward from the upper edge of the outer wall 30. The intermediate plate 31 is formed perpendicular to the outer wall 30.

An inner side wall 40 is continuously provided at the inner edge of the intermediate plate 31 via a polygonal line. The inner side wall 40 extends downward from the inner edge portion of the intermediate plate 31. The inner side wall 40 is formed perpendicular to the intermediate plate 31, and a double wall is formed by the outer wall surface 30 and the inner side wall 40. The inner side wall 40 is formed to have a width smaller in the front-rear direction than the outer wall 30. The lower edge portion of the inner side wall 40 is in contact with the upper surface of the bottom plate 10.

A fixing piece 42 projects from the central portion of the upper edge portion of the inner side wall 40. Further, front and rear engaging portions 43, 43 project from the lower edge portion of the inner side wall 40. The front and rear engaging portions 43, 43 are inserted into the front and rear engaging holes 12, 12 formed in the edge portion of the bottom plate 10.

The outer wall 30 on the left side has a symmetrical configuration with the outer wall 30 on the right side, and an intermediate plate 31 is connected to the upper edge portion and an inner side wall 40 is connected to the inner edge portion of the intermediate plate 31. ..

At the upper edge of the front end wall 20, a front crosspiece 50 is continuously provided via a polygonal line. The front crosspiece 50 is formed in a rectangular shape along the upper edge of the front end wall 20. The front crosspiece 50 projects inward (rearly) and is formed perpendicular to the front end wall 20.

The crosspiece 50 on the front side is formed with left and right support portions 51, 51 and a cut portion 52 formed between both support portions 51, 51. The left and right support portions 51, 51 are formed at the left and right end portions of the crosspiece plate 50.
The base end edge portion (leading edge portion) of the cut portion 52 and the upper edge portion of the front end wall 20 are connected to each other via the first cutting guide wire L11.

The left edge portion of the cut portion 52 and the right edge portion of the left support portion 51 are connected to each other via the second cutting guide wire L12. Further, the right edge portion of the cut portion 52 and the left edge portion of the right support portion 51 are connected to each other via the second cutting guide wire L12.
The left and right second cutting guide lines L12 and L12 are formed so that the distance in the left-right direction becomes narrower from the inside to the outside (from the rear side to the front side).

At the central portion of the base end edge portion of the cutout portion 52, a lid plate 55 that closes the recess 25 of the end wall 20 is continuously provided via a polygonal line. The lid plate 55 is formed in a trapezoidal shape in which the width in the front-rear direction becomes narrower from the upper side to the lower side. The outer edge portion of the lid plate 55 and the inner edge portion of the recess 25 are connected to each other via the third cutting guide wire L13.

At the right edge of the front crosspiece 50, a right front extension plate 56 is continuously provided via a polygonal line. In the state of the blank sheet S shown in FIG. 2, the extension plate 56 is a strip-shaped portion extending in the extension direction of the crosspiece plate 50.

As shown in FIG. 3, the right front extending plate 56 is formed with an inclined polygonal line L20 from the front end portion of the left edge portion to the trailing edge portion in a state of extending in the extending direction of the crosspiece plate 50. ..
The inclined polygonal line L20 is formed on the inner surface of the extension plate 56, but in order to make the configuration of the inclined polygonal line L20 easy to understand, the outer surface of the extension plate 56 is also shown by a solid line in each drawing.

The inclined polygonal line L20 is inclined so as to move away from the left edge portion from the front end portion of the left edge portion of the extension plate 56 toward the rear. In the present embodiment, the inclination angle of the inclined polygonal line L20 with respect to the left edge portion of the extension plate 56 is set to 45 degrees.

As shown in FIG. 4, the base end portion 56a of the extension plate 56 is bent downward with respect to the crosspiece plate 50, and is overlapped with the outer surface of the inner flap 21 on the front right side.
The portion 56b on the tip end side of the extension plate 56 is folded back toward the base end portion 56a at the inclined polygonal line L20. In the present embodiment, the portion 56b on the tip end side of the extension plate 56 is folded back toward the inner surface side of the base end portion 56a.
As a result, the portion 56b on the tip end side of the extension plate 56 is overlapped with the upper end portion of the outer surface of the inner flap 21 on the front right side in a state of extending in the front-rear direction.

Then, as shown in FIG. 1, the extension plate 56 is sandwiched between the outer wall 30 and the inner flap 21 in a state of being folded back at a right angle. That is, the extension plate 56 is sandwiched between the outer wall 30 and the inner side wall 40.

As shown in FIG. 4, a connecting piece 57 is formed at the lower corner of the tip of the right front extension plate 56. The connecting piece 57 is a portion to be inserted into the connecting hole 21c of the inner flap 21.
The upper edge portion of the connecting piece 57 is connected to the extending plate 56 via a slit, and the base end edge portion of the connecting piece 57 is connected to the extending plate 56 via a broken line. By bending the connecting piece 57 inward with respect to the extension plate 56, the connecting piece 57 is inserted into the connecting hole 21c.

At the left edge of the front crosspiece 50, a left front extension plate 56 is continuously provided via a polygonal line. The left and right extension plates 56, 56 are formed symmetrically.

As shown in FIG. 2, a rear crosspiece 50 is continuously provided on the upper edge of the rear end wall 20 as well as the front end wall 20. Similar to the front crosspiece 50, the rear crosspiece 50 is formed with the left and right support portions 51, 51 and the cutout portion 52 formed between the two support portions 51, 51, and the left and right support portions 51 and 51 are formed. Extension plates 56 and 56 are connected in series.

Next, a procedure for assembling the tray 1 of the present embodiment will be described.
First, from the state of the blank sheet S shown in FIG. 2, the front and rear end walls 20 and 20 are raised with respect to the bottom plate 10 as shown in FIG. Further, the crosspiece 50 is bent inward with respect to the end wall 20, and the inner flap 21 is bent inward with respect to the end wall 20.
Then, the slits 21a and 21b of the front and rear inner flaps 21 and 21 are combined to connect the tip portions of the front and rear inner flaps 21 and 21.

Subsequently, as shown in FIG. 4, the base end portion 56a of the extension plate 56 is bent downward with respect to the crosspiece plate 50, and the portion 56b on the tip end side of the extension plate 56 is based on the inclined polygonal line L20. Fold back in the front-back direction with respect to the end portion 56a. In this way, the extension plate 56 is overlapped with the upper end portion of the outer surface of the inner flap 21.

Further, the connecting piece 57 is bent inward with respect to the extension plate 56, and the connecting piece 57 is inserted into the connecting hole 21c of the inner flap 21. By engaging the connecting piece 57 of the extension plate 56 with the connecting hole 21c of the inner flap 21 in this way, it is possible to prevent the inner flap 21 from returning when the tray 1 is assembled. This eliminates the need for the operator to hold the inner flap 21 by hand.

After that, as shown in FIG. 1, the left and right outer walls 30 and 30 are raised with respect to the bottom plate 10. Further, the intermediate plate 31 is bent inward with respect to the outer wall 30, and the inner side wall 40 is bent downward with respect to the intermediate plate 31.
Then, the front and rear engaging portions 43 and 43 formed on the lower edge portion of the inner side wall 40 are inserted into the front and rear engaging holes 12 and 12 of the bottom plate 10, and the lower edge portion of the inner side wall 40 is inserted into the upper surface of the bottom plate 10. To fix.
Further, when the inner side wall 40 is bent downward with respect to the intermediate plate 31, the fixing piece 42 protrudes from the center of the upper edge portion of the inner side wall 40.

In this way, a double wall is formed by the outer wall 30 and the inner side wall 40, and the front and rear inner flaps 21 and 21 and the front and rear extension plates 56 and 56 are sandwiched between the outer wall 30 and the inner side wall 40. Then, the assembly work of the tray 1 is completed.

When stacking another tray 1 on the tray 1 of the present embodiment, the lower surfaces of the other trays 1 are supported by the upper surfaces of the front and rear crosspieces 50, 50, and the fixing piece 42 of the tray 1 is a fixing hole of the other tray 1. By being inserted into 11, the other trays 1 can be stably stacked.

When the contents are taken out from the tray 1 of the present embodiment, as shown in FIG. 5, the lid plate 55 is first pushed inward from the outside to cut open the third cutting guide wire L13. Then, the operator's finger is inserted into the opened recess 25, and the cut portion 52 is pulled up. In this way, the first cutting guide line L11 and both second cutting guide lines L12 and L12 are sequentially cut open to separate the cutting portion 52 from the crosspiece plate 50.

In the tray 1 of the present embodiment, when the cutout portion 52 is pulled up in an attempt to separate the cutout portion 52 from the crosspiece plate 50, the extension plate 56 is caught on the inner surface of the folded portion of the outer wall 30 and the inner side wall 40. As a result, the upward movement of the left and right ends of the crosspiece 50 is suppressed. As a result, the cut portion 52 can be easily pulled upward with respect to the left and right ends of the cross plate 50, so that the cut portion 52 can be easily separated from the cross plate 50.

In this way, the cutout portions 52 and 52 are separated from the front and rear crosspieces 50 and 50, respectively, and the front and rear crosspieces 50 and 50 are cut open so that the upper surface opening of the tray 1 can be widened.

In the tray 1 of the present embodiment, when both crosspieces 50 and 50 are cut open, support portions 51 remain at the front, rear, left and right corners of the upper surface opening, respectively. Therefore, in the tray 1, even after both the crosspieces 50 and 50 are cut open, the other trays 1 can be stably stacked by supporting the other trays 1 on the upper surface of each support portion 51.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments and can be appropriately modified without departing from the spirit of the present invention.
In the tray 1 of the present embodiment, as shown in FIG. 1, the cut-out portion 52 of the crosspiece plate 50 is formed so that the distance in the left-right direction becomes narrower from the inside to the outside, and the cut-out portion 52 has a lid plate 55. However, the shape of the cutout portion 52 is not limited. For example, the recess 25 of the end wall 20 may be opened without connecting the lid plate 55 to the cut portion 52. Further, it is not necessary to form the recess 25 in the end wall 20.

In the tray 1 of the present embodiment, as shown in FIG. 4, the portion 56b on the tip end side of the extension plate 56 is folded back toward the inner surface side of the base end portion 56a, but the portion 56b on the tip end side of the extension plate 56 is folded back. It may be folded back toward the outer surface side of the base end portion 56a.

In the tray 1 of the present embodiment, as shown in FIG. 1, the extension plate 56 is continuously provided on the crosspiece plate 50, but the extension plate 56 does not have to be formed.

In the tray 1 of the present embodiment, a double wall is formed by the outer wall 30 and the inner side wall 40, and the inner flap 21 is sandwiched between the outer wall 30 and the inner side wall 40, but the inner side wall is not provided. Only the outer side wall 30 may be provided.

In the tray 1 of the present embodiment, the front and rear crosspieces 50 and 50 are provided, but the front and rear crosspieces 50 may be provided only on one of the front and rear sides.

Although the tray 1 of the present embodiment is made of corrugated cardboard, the tray 1 can be formed of various known paperboards.

1 tray 10 bottom plate 11 fixing hole 12 engaging hole 20 end wall 21 inner flap 21c connecting hole 25 recess 30 outer side wall 31 intermediate plate 40 inner side wall 42 fixing piece 43 engaging part 50 cross plate 51 support part 52 cutting part 55 lid plate 56 Extension plate 56a Base end 56b Tip side 57 Connecting piece L11 First cutting guide line L12 Second cutting guide line L13 Third cutting guide line L20 Inclined polygonal line S Blank sheet

Claims (4)

With the bottom plate
The front and rear end walls connected to the front and rear edges of the bottom plate, and
The left and right side walls connected to the left and right edges of the bottom plate,
With a crosspiece protruding inward from the upper edge of the end wall,
A tray on which an upper opening is formed,
On the crosspiece,
The left and right support parts formed on the left and right ends,
A cutout portion formed between the two support portions and a cut portion are formed.
The cut portion and the end wall are connected to each other via a first cutting guide wire.
The tray is characterized in that the cut portion and both support portions are connected to each other via a second cutting guide wire on the left and right. The tray according to claim 1.
A recess recessed downward is formed in the upper edge of the end wall.
A lid plate that closes the recess is formed in the cut portion.
The tray is characterized in that the recess and the lid plate are connected to each other via a third cutting guide wire. The tray according to claim 1 or 2.
An inner flap that is connected to the left-right edge of the end wall and is overlapped with the inner surface of the side wall,
It is provided with an inner side wall that is connected to the upper edge of the side wall and is overlapped with the inner surface of the inner flap.
An extension plate is continuously provided at the left-right edge of the crosspiece.
The base end portion of the extension plate is bent downward with respect to the cross plate.
The portion on the tip end side of the extension plate is folded back and forth with respect to the base end portion.
The extension plate is a tray characterized in that it is sandwiched between the side wall and the inner side wall. The tray according to claim 3.
A connecting piece is formed at the tip of the extension plate.
The inner flap has a connecting hole, and the inner flap has a connecting hole.
A tray characterized in that the connecting piece is inserted into the connecting hole.

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