JP6772722B2 - tray - Google Patents

Description

The present invention relates to a tray.

The corrugated cardboard tray includes a bottom plate, front and rear end walls connected to the bottom plate, and left and right side walls, and four top plates covering the corners of the upper opening are continuously provided on both end walls. In some cases, the side edge of the top plate is supported by the upper edge of the side wall (see, for example, Patent Document 1).

Japanese Unexamined Patent Publication No. 2015-16875

In the conventional tray described above, two trays can be stacked by placing the four corners of the bottom plates of the other trays on the upper surface of each top plate. At this time, there is a problem that the top plate of the lower tray is deformed downward due to the weight of the upper tray, and the side edge portion of the top plate is easily detached from the upper edge portion of the side wall.

An object of the present invention is to provide a tray capable of solving the above-mentioned problems and stabilizing the top plate.

In order to solve the above-mentioned problems, the present invention is a tray provided with a bottom plate, front and rear end walls and left and right side walls connected to the bottom plate, and surrounded by the both end walls and both side walls. An upper opening is formed. On the upper edge of the end wall, left and right top plates covering the left and right corners of the upper opening are continuously provided. At the upper edge of the end wall, an intermediate plate is continuously provided between the top plates. The intermediate plate is continuously provided to both top plates, and an inner wall overlapping the inner surface side of the end wall is continuously provided at the tip edge portion of the intermediate plate. The lower edge of the inner wall is in contact with the upper surface of the bottom plate. A support piece overlapped with the inner surface of the side wall is continuously provided on the side edge portion of the top plate, and the lower edge portion of the support piece is in contact with the upper surface of the bottom plate. The side edge portion of the inner wall is inserted into the gap formed between the inner surface of the end wall and the side edge portion of the support piece.

In the tray of the present invention, since the side edge portion of the top plate is supported by the bottom plate by the support piece, the top plate can be stabilized. As a result, when another tray is placed on the top plate of the tray, it is possible to prevent the top plate from being deformed, so that a plurality of trays can be stably stacked.
Further, since the tray support piece of the present invention overlaps the inner surface of the side wall and is in contact with the bottom plate, the stability of the top plate can be improved.

In the tray of the present invention, since the top plate can be easily assembled to the side wall, the tray can be easily assembled.
In the tray of the present invention, since the side wall is single, the area of the sheet required for producing the blank sheet can be reduced, and the amount of material used can be reduced.

In the tray described above, it is preferable to form an engaging piece on the side edge of the top plate and an engaging recess on the upper edge of the side wall so that the engaging piece is fitted into the engaging recess. ..
In this configuration, it is possible to prevent the engaging piece from shifting with respect to the side wall.

In the tray described above, it is preferable to form a mounting piece at the lower edge of the support piece and insert the mounting piece into a mounting hole formed in the bottom plate to securely mount the support piece to the bottom plate.

In the tray of the present invention, the side edge portion of the top plate is supported by the bottom plate via the support piece, and the top plate is stable, so that a plurality of trays can be stably stacked.

It is a perspective view which looked at the tray which concerns on embodiment of this invention from the rear upper right. It is a figure which showed the blank sheet of the tray which concerns on embodiment of this invention. It is a figure which showed the tray which concerns on embodiment of this invention, (a) is the view which looked at the tray from the front, (b) is the cross-sectional perspective view of the front part of the tray. It is a side view of the tray which concerns on embodiment of this invention. It is a perspective view which looked at the state which raised the side wall in the tray which concerns on embodiment of this invention from the rear upper right. FIG. 5 is a partial side sectional view showing an end wall, an inner wall, and a bent piece in the tray according to the embodiment of the present invention. It is a perspective view of the state which the tray which concerns on embodiment of this invention is stacked up and down.

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 tray configuration.

As shown in FIG. 1, the tray 1 of the present embodiment is a container for storing vegetables, and as shown in FIG. 7, a plurality of trays 1 can be stacked up and down.

As shown in FIG. 2, the tray 1 is formed by folding a blank sheet S obtained by cutting out a single corrugated cardboard sheet into mountain folds or valley folds at each ruled line. The blank sheet S shown in FIG. 2 is arranged so that the inner surface side can be seen.
Each ruled line (folded line) of the blank sheet S is a linear groove formed by pushing the surface of the blank sheet S.
A notch may be formed in the ruled line. In this way, the blank sheet S can be easily bent at the ruled line.

As shown in FIG. 1, the tray 1 includes a bottom plate 10, a pair of front and rear end walls 30 and 30 erected on the bottom plate 10, a pair of left and right side walls 20 and 20 erected on the bottom plate 10, and a bottom plate 10. It is provided with four top plates 40 on the front, back, left and right, which are connected to the upper edges of both end walls 30 and 30.

In the tray 1, the space surrounded by the bottom plate 10, the front and rear end walls 30 and 30, and the left and right side walls 20 and 20 serves as a storage space for vegetables. Further, on the upper surface of the tray 1, an upper opening 1a surrounded by both side walls 20 and 20 and both end walls 30 and 30 is formed.

As shown in FIG. 5, the bottom plate 10 is formed in a rectangular shape, and the length in the left-right direction is smaller than the length in the front-rear direction.
The first mounting holes 11 and 11 penetrate through the left-right intermediate portions of the front edge portion and the rear edge portion of the bottom plate 10. The first mounting piece 32a of the inner wall 32, which will be described later, is inserted into the first mounting hole 11.

Two second mounting holes 12, 12 penetrate through the left edge and the right edge of the bottom plate 10, respectively. The two second mounting holes 12, 12 are arranged at intervals in the front-rear direction. The second mounting piece 46 of the support piece 45, which will be described later, is inserted into the second mounting hole 12.

A right side wall 20 is continuously provided on the right edge of the bottom plate 10 via a ruled line L1.
Folded pieces 50 and 50 are continuously provided on the front and rear side edges of the right side wall 20 via ruled lines L3 and L3.
As shown in FIG. 4, the bent piece 50 is a portion that overlaps the inner surface of the end wall 30 described later. The lower edge of the bent piece 50 is in contact with the upper surface of the bottom plate 10 (see FIG. 3A).

As shown in FIG. 5, front and rear engaging recesses 21 and 21 are formed on the front and rear portions of the upper edge portion of the right side wall 20. The engaging recess 21 is a portion into which the engaging piece 42 of the top plate 40 is fitted (see FIG. 1). The engaging recess 21 is formed so that the width in the front-rear direction decreases from the bottom to the top.

As shown in FIG. 5, a side wall 20 on the left side is continuously provided on the left edge of the bottom plate 10 via a ruled line L1. Further, bent pieces 50 and 50 are continuously provided on the front and rear side edges of the left side wall 20 via ruled lines L3 and L3.
Since the left side wall 20 and the bent piece 50 have a symmetrical configuration with the right side wall 20 and the bent piece 50 described above, the description thereof will be omitted.

A front end wall 30 is continuously provided on the front edge of the bottom plate 10 via a ruled line L2. The front end wall 30 is a portion that overlaps the outer surfaces of the front bent pieces 50, 50 (see FIG. 4).
As shown in FIG. 3B, left and right top plates 40 and 40 are continuously provided at the left and right ends of the upper edge of the front end wall 30 via a ruled line L4.

The top plate 40 is a fan-shaped portion that covers the corner of the upper opening 1a. The top plate 40 projects cantilevered from the end wall 30, and extends beyond the bent piece 50 to the corner of the upper opening 1a.
The side edge portion 41 of the top plate 40 is arranged inside the inner surface of the side wall 20. An engaging piece 42 projects from the central portion of the side edge portion 41 of the top plate 40 in the front-rear direction.
The engaging piece 42 projects outward from the inner surface of the side wall 20 and is fitted in the engaging recess 21 of the side wall 20. The width of the engaging piece 42 in the front-rear direction is formed to be larger than the width of the upper part of the engaging recess 21, and the engaging piece 42 is fitted into the bottom of the engaging recess 21.

In the side edge portion 41 of the top plate 40, support pieces 45 are continuously provided on both front and rear sides of the engaging piece 42 via a ruled line L6 as shown in FIG. 5 (see FIG. 2).
As shown in FIG. 3B, the support piece 45 extends downward from the side edge portion 41 of the top plate 40. The support piece 45 is superposed on the inner surface of the side wall 20.
As shown in FIG. 5, a second mounting piece 46 projects from the lower edge of the support piece 45. As shown in FIG. 3B, the lower edge portion of the support piece 45 is in contact with the upper surface of the bottom plate 10, and the second mounting piece 46 (see FIG. 2) is in the second mounting hole 12 of the bottom plate 10. It is plugged in.

At the upper edge of the front end wall 30, an intermediate plate 31 is continuously provided between the left and right top plates 40, 40 via a ruled line L4. The intermediate plate 31 is a portion that overlaps the upper edges of the left and right bent pieces 50, 50.

An inner wall 32 is continuously provided at the tip edge portion (inner end edge portion) of the intermediate plate 31 via a ruled line L5. As shown in FIG. 4, the inner wall 32 is a portion overlapping the inner surface of the bent piece 50. By superimposing the inner wall 32 on the inner surface of the bent piece 50, the end wall 30, the intermediate plate 31, and the inner wall 32 are in a state of surrounding the bent piece 50.

As shown in FIG. 5, a first mounting piece 32a is projected from the middle portion of the lower edge portion of the inner wall 32 in the left-right direction. By inserting the first mounting piece 32a into the first mounting hole 11 of the bottom plate 10, the lower edge portion of the inner wall 32 is held by the bottom plate 10 as shown in FIG.

As shown in FIG. 5, a finger hook portion 32c cut out in a semicircular shape is formed on the lower edge portion of the inner wall 32. When the tray 1 after use is unfolded, the inner wall 32 can be easily opened by hanging the operator's finger on the finger hook portion 32c.

The rear end wall 30 is connected to the trailing edge of the bottom plate 10 via a ruled line L2. Further, on the upper edge portion of the rear end wall 30, left and right top plates 40, 40 and an intermediate plate 31 are continuously provided via a ruled line L4. Further, an inner wall 32 is continuously provided at the tip edge portion of the intermediate plate 31 via a ruled line L5.
Since the rear end wall 30 has a configuration symmetrical to that of the front end wall 30, the description thereof will be omitted.

In the tray 1 of the present embodiment, as shown in FIG. 2, the angle α at which the ruled line L1 and the ruled line L3 of the side wall 20 intersect is set to 88 degrees in the state of the blank sheet S.
As shown in FIG. 3A, when the bent piece 50 is bent approximately 90 degrees with respect to the side wall 20 at the ruled line L3 and the lower edge portion of the bent piece 50 is brought into contact with the upper surface of the bottom plate 10, the side wall 20 is formed. Is inclined outward with respect to the virtual surface perpendicular to the bottom plate 10 through the ruled line L1 between the bottom plate 10 and the side wall 20. That is, the distance between the left and right side walls 20 and 20 gradually expands from the bottom plate 10 toward the upper opening 1a. Further, as shown in FIG. 3B, the distance between the left and right top plates 40 and 40 is larger than the distance between the left and right corners of the bottom plate 10.

Further, as shown in FIG. 4, when the bent piece 50 is bent approximately 90 degrees with respect to the side wall 20 at the ruled line L3, the bent piece 50 passes through the ruled line L2 between the bottom plate 10 and the end wall 30 and becomes the bottom plate 10. Tilt inward with respect to a vertical virtual plane.
As shown in FIG. 6, when the bent piece 50 is surrounded by the end wall 30, the intermediate plate 31, and the inner wall 32, the bent piece 50 is diagonally arranged between the end wall 30 and the inner wall 32.
Then, the lower edge portion of the bent piece 50 abuts on the bent portion of the bottom plate 10 and the end wall 30, and the upper edge portion of the bent piece 50 abuts on the bent portion of the intermediate plate 31 and the inner wall 32.

In the tray 1 of the present embodiment, as shown in FIG. 1, the upper corner portion 1b formed by the side wall 20 and the bent piece 50 projects upward from the upper surface of the top plate 40. Further, the upper edge portion 20a between the front and rear engaging recesses 21 and 21 on the side wall 20 also protrudes upward from the upper surface of the top plate 40.
Further, in the tray 1 of the present embodiment, an opening 1c is formed in the lower corner portion formed by the side wall 20, the end wall 30, and the bottom plate 10.

As shown in FIG. 7, when the two trays 1 and 1 are stacked one above the other, the four corners of the bottom plate 10 of the upper tray 1 are formed on the upper surfaces of the top plates 40 and both intermediate plates 31 and 31 of the lower tray 1. It will be placed. Further, the upper corners 1b of the upper four corners of the lower tray 1 enter into the openings 1c of the lower four corners of the upper tray 1, respectively.

Next, the procedure for assembling the tray 1 will be described.
First, from the blank sheet S shown in FIG. 2, as shown in FIG. 5, the left and right side walls 20 and 20 are bent approximately 90 degrees with respect to the bottom plate 10 at the ruled lines L1 and L1 to raise the side wall 20. Further, the bent piece 50 is bent approximately 90 degrees with respect to the side wall 20 at the ruled line L3.

Subsequently, as shown in FIG. 4, the front and rear end walls 30 and 30 are bent approximately 90 degrees with respect to the bottom plate 10 at the ruled line L2 to raise the end wall 30, and the end walls 30 are bent left and right 50 and 50. Overlay on the outer surface of.

Further, as shown in FIG. 3B, with the support piece 45 bent approximately 90 degrees with respect to the top plate 40, the intermediate plate 31 and the top plate 40 are bent approximately 90 degrees with respect to the end wall 30 at the ruled line L4. Then, the engaging piece 42 of the top plate 40 is fitted into the engaging recess 21 of the side wall 20, and the second mounting piece 46 (see FIG. 2) of the support piece 45 is inserted into the second mounting hole 12 of the bottom plate 10.

Further, as shown in FIG. 6, the inner wall 32 is bent with respect to the intermediate plate 31 at the ruled line L5, the inner wall 32 is overlapped with the inner surface of the bent piece 50, and the first mounting piece 32a of the inner wall 32 is the first of the bottom plate 10. Insert into the mounting hole 11.
In this way, as shown in FIG. 1, the assembly of the tray 1 is completed.

In the tray 1 as described above, as shown in FIG. 3A, the side edge portion 41 of the top plate 40 is supported by the bottom plate by the support piece 45, so that the top plate 40 can be stabilized. As a result, as shown in FIG. 8, when another tray 1 is placed on each top plate 40 of the tray 1, it is possible to prevent the top plate 40 from being deformed, so that the plurality of trays 1 and 1 can be stably placed. Can be stacked.

Further, since the support piece 45 of the tray 1 overlaps the inner surface of the side wall 20 and is in contact with the upper surface of the bottom plate 10, the stability of the top plate 40 can be improved.
Further, since the engaging piece 42 of the top plate 40 is fitted in the engaging recess 21 of the side wall 20, it is possible to prevent the engaging piece 42 from shifting in the front-rear direction with respect to the side wall 20.

In the tray 1 of the present embodiment, as shown in FIG. 3A, the width of the upper opening 1a in the left-right direction is larger than the width of the bottom plate 10 in the left-right direction. Therefore, as shown in FIG. 8, two trays are used. When 1 and 1 are stacked one above the other, the bottom plate 10 of the upper tray 1 can be reliably placed on each of the top plates 40 of the lower tray 1 and both intermediate plates 31 and 31.
Further, the lateral movement of the upper tray 1 can be restricted by the upper corner portions 1b of the lower tray 1 and the upper edge portions 20a, 20a of the side walls 20, 20.

Further, as shown in FIG. 6, the bent piece 50 is diagonally arranged between the end wall 30 and the inner wall 32, and the bent piece 50 plays a role of brace with respect to the end wall 30 and the inner wall 32. Therefore, the strength of the tray 1 can be increased.

In the tray 1 of the present embodiment, since the side wall 20 is single, the area of the sheet required to create the blank sheet S (see FIG. 2) can be reduced, and the amount of material used can be reduced. Because it can be done, the material can be saved.

Further, as shown in FIG. 1, a portion where the side wall 20, the end wall 30, and the bottom plate 10 are in contact with each other by forming an opening 1c in the lower corner portion formed by the side wall 20, the end wall 30, and the bottom plate 10. Is easy to bend.

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, an engaging piece 42 is formed on the top plate 40, and an engaging recess 21 is formed on the upper edge of the side wall 20, but the top plate 40 It is not necessary to form the engaging recess 21 of the engaging piece 42 and the side wall 20.

In the tray 1, the shapes of the top plate 40 and the support piece 45 are not limited. For example, it is not necessary to form the mounting piece 46 on the lower edge of the support piece 45.
In the tray 1 of the present embodiment, the intermediate plate 31 and the inner wall 32 are connected to the upper edge of the end wall 30, but as a reference example of the present invention, the intermediate plate 31 and the inner wall 32 may not be provided. ..

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

1 Tray 1a Upper opening 1b Upper corner 1c Opening 10 Bottom plate 11 First mounting hole 12 Second mounting hole 20 Side wall 20a Upper edge 21 Engagement recess 30 End wall 31 Intermediate plate 32 Inner wall 32a Mounting piece 40 Top plate 41 side Edge 42 Engagement piece 45 Support piece 46 Second mounting piece 50 Folded piece S Blank sheet

Claims (3)

With the bottom plate
The front and rear end walls and the left and right side walls, which are connected to the bottom plate, are provided.
A tray in which an upper opening surrounded by both end walls and both side walls is formed.
On the upper edge of the end wall, left and right top plates covering the left and right corners of the upper opening are continuously provided.
At the upper edge of the end wall, an intermediate plate is continuously provided between the top plates.
The intermediate plate is connected to both top plates, and an inner wall overlapping the inner surface side of the end wall is connected to the tip edge of the intermediate plate.
The lower edge of the inner wall is in contact with the upper surface of the bottom plate.
On the side edge of the top plate, support pieces stacked on the inner surface of the side wall are continuously provided.
The lower edge of the support piece abuts on the upper surface of the bottom plate .
The tray is characterized in that the side edge portion of the inner wall is inserted into a gap formed between the inner surface of the end wall and the side edge portion of the support piece . The tray according to claim 1.
Engagement pieces are formed on the side edges of the top plate.
An engaging recess is formed on the upper edge of the side wall.
A tray in which the engaging piece is fitted in the engaging recess. The tray according to claim 1 or 2.
A mounting piece is formed on the lower edge of the support piece.
The tray is characterized in that the mounting piece is inserted into a mounting hole formed in the bottom plate.

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