JP3237346U - Box sheet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a box sheet capable of easily keeping a closed state without using a sealing tape. SOLUTION: A box sheet extends from a pair of first side surface panels 1a and 1b and a pair of second side surface panels 2a and 2b which are alternately connected in the left-right direction and an upper edge of the first side surface panel. It is provided with 1 lid flap 3a and 3b and 2nd lid flaps 4a and 4b extending from the upper edge of the 2nd side panel, and can be assembled into a box body. A box sheet 10 in which a lid portion is formed by partially overlapping each other, and a lock piece 12 to be bent by an easy-to-bend line 11 is defined at a corner portion on the tip end side of the second lid flap, and a second lid is formed. 1 The lid flap is provided with a locking hole 13 into which a lock piece is inserted. [Selection diagram] Fig. 1

Description

The present invention relates to a box sheet.

Box bodies assembled from box sheets such as corrugated cardboard sheets are widely used for storing and transporting articles. The box sheet assembled in this box body includes a pair of first side panel and a pair of second side panels that are alternately connected in the left-right direction, and a lid is provided from the upper edge of the first side panel and the second side panel, respectively. It is known that the flap is extended.

In this box sheet, for example, the lid portion of the box body can be formed by abutting the tip edges of the facing lid flaps against each other and attaching a sealing tape to the joint between the lid flaps. On the other hand, as this box sheet, a sheet capable of forming a lid portion without using a sealing tape has also been proposed (see Patent Document 1).

Japanese Unexamined Patent Publication No. 2015-168455

In Patent Document 1, in a configuration in which a lid portion is formed by bending the first flap to the fourth flap counterclockwise, the lid extends toward the third flap on the right side (third flap side) of the second flap. It is described that the protrusion is formed and a locking hole for inserting the protrusion is provided in the third flap.

However, although the protrusion and the locking hole described in Patent Document 1 contribute to keeping the lid closed, it is difficult to keep the lid closed only by this configuration. ..

The present invention has been made in view of such inconveniences, and an object of the present invention is to provide a box sheet capable of easily maintaining a closed state without using a sealing tape. ..

The box sheet according to one aspect of the present invention includes a pair of first side panel and a pair of second side panels that are alternately connected in the left-right direction, and a first lid that extends from the upper edge of the first side panel. A flap and a second lid flap extending from the upper edge of the second side panel are provided and can be assembled into a box body, and the first lid flap partially overlaps the upper side of the second lid flap. A box sheet on which a lid portion is formed, and a lock piece that can be bent by an easy-to-bend line is defined at a corner portion on the tip end side of the second lid flap, and the lock piece is defined on the first lid flap. There is a locking hole into which the piece is inserted.

The box sheet according to one aspect of the present invention can easily maintain a closed state without using a sealing tape.

FIG. 1 is a schematic plan view showing a box sheet according to an embodiment of the present invention. FIG. 2 is a schematic perspective view showing a box body formed by assembling the box sheet of FIG. 1. FIG. 3 is a schematic plan view showing a state in which the lid portion of the box body of FIG. 2 is being assembled. FIG. 4 is a schematic plan view showing the next state of FIG. 3 during assembly of the lid portion of the box body of FIG. FIG. 5 is a schematic plan view showing a locked state of the lock piece by the locking hole of the box body of FIG.

[Explanation of Embodiment of the present invention]
First, embodiments of the present invention will be listed and described.

The box sheet according to one aspect of the present invention includes a pair of first side panel and a pair of second side panels that are alternately connected in the left-right direction, and a first lid that extends from the upper edge of the first side panel. A flap and a second lid flap extending from the upper edge of the second side panel are provided and can be assembled into a box body, and the first lid flap partially overlaps the upper side of the second lid flap. A box sheet on which a lid portion is formed, and a lock piece that can be bent by an easy-to-bend line is defined at a corner portion on the tip end side of the second lid flap, and the lock piece is defined on the first lid flap. There is a locking hole into which the piece is inserted.

The box sheet can form a lid portion by inserting the lock piece into the locking hole. In the box sheet, the lock piece is defined at the corner portion on the tip end side of the second lid flap, and the lock piece is in a state where the bendable line is bent, and the lock piece of the first lid flap is locked. Since it is inserted into the hole, it is easy to insert the lock piece into the locking hole, and it is easy to stably maintain the state in which the lock piece is inserted. Therefore, the box sheet can be easily maintained in a closed state without using a sealing tape.

It is preferable that the lock piece has a right-angled isosceles triangle shape. As described above, when the lock piece has a right-angled isosceles triangle shape, the closed state of the lid can be maintained more easily and stably.

The locking hole may be formed by bending the tongue piece provided in the first lid flap. As described above, by forming the locking hole by bending the tongue piece provided in the first lid flap, it is easy to stably maintain the inserted state of the locking piece into the locking hole. In addition, it is easy to prevent foreign matter from entering the box through the locking hole.

The tongue piece is provided so as to be foldably connected to the first lid flap at the base end edge and widened from the tip edge of the base portion, and the lock piece is inserted into the locking hole. As described above, it has a main body portion formed to have substantially the same width as the easy-to-bend line, and the base end edge is located at the base end side of the second lid flap with respect to the lock piece in the assembled state. It is preferable that the line is arranged in parallel with the easy-to-bend line. In this way, the tongue piece is provided with a base portion foldably connected to the first lid flap at the base end edge thereof and a width widened from the tip edge of the base portion, and the lock piece is locked. It has a main body portion that is formed to have substantially the same width as the easily bendable line so as to be inserted into the hole, and the base end edge is more base than the lock piece of the second lid flap in the assembled state. By arranging the lock piece in parallel with the easy-to-bend line at the position on the end side, the state in which the lock piece is inserted into the locking hole can be easily inserted into the locking hole while facilitating the insertion of the lock piece into the locking hole. It can be maintained more stably.

It is preferable that the first lid flap is a length surface flap, and the second lid flap is a width surface flap narrower than the first lid flap. As described above, the first lid flap is a length surface flap, and the second lid flap is a width surface flap narrower than the first lid flap, whereby the lock piece is locked into the locking hole. Easy to insert into.

In the present invention, the "left-right direction" means the horizontal direction in a general usage mode assumed in a box body formed by assembling a box sheet. "Upper" means above with respect to the left-right direction. The term "isosceles right triangle" is not limited to a perfect isosceles right triangle, and includes, for example, a shape in which the apex of the triangle and its vicinity are curved or bent. "Approximately the same width as the easy-to-fold line" means that the error from the easy-to-fold line is 5 mm or less. Further, the error is preferably 4 mm or less, more preferably 3 mm or less.

[Details of the Embodiment of the present invention]
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings as appropriate.

[Box sheet]
The box sheet 10 of FIG. 1 can be assembled into a box body, and specifically, it is assembled into the box body 20 shown in FIG. The box sheet 10 extends from a pair of first side surface panels 1a and 1b and a pair of second side surface panels 2a and 2b and upper edges of the first side surface panels 1a and 1b which are alternately connected in the left-right direction. The first lid flaps 3a and 3b are provided with the second lid flaps 4a and 4b extending from the upper edges of the second side surface panels 2a and 2b. Further, the box sheet 10 has a first bottom flap 5a and 5b extending from the lower edges of the first side surface panels 1a and 1b, and a second bottom flap extending from the lower edges of the second side surface panels 2a and 2b. It includes 6a and 6b, and a joint 7 extending from the lateral edge of the first side surface panel 1a located on the lateral side in the lateral direction (left side in FIG. 1). As shown in FIG. 2, in the box body 20, the lid portion 21 is formed by partially overlapping the first lid flap 3b on the upper side of the second lid flap 4a. A lock piece 12 to be bent by the easy-to-bend line 11 is defined at the corner portion on the tip end side of the second lid flap 4a. The first lid flap 3b is provided with a locking hole 13 into which the lock piece 12 is inserted. In addition, in this specification, "bottom" means the bottom in a general usage mode assumed in a box body made by assembling a box sheet. Further, in FIG. 1, a thick solid line indicates a cutting line formed by cutting a sheet, and a thin solid line indicates an easy-to-bend line. Examples of the easily bendable line include a ruled line formed by pressing one side of the sheet.

The box sheet 10 is composed of one sheet. The sheet used for the box sheet 10 is not particularly limited as long as it has enough strength to maintain the shape of the box body 20 formed by assembling the box sheet 10, and is not particularly limited, for example, a corrugated cardboard sheet, cardboard, or the like. Examples thereof include a paper sheet, a synthetic resin sheet, and a laminated sheet of a paper sheet and a synthetic resin sheet. Among them, a paper sheet is preferable, and a corrugated cardboard sheet is particularly preferable, from the viewpoints of processability, shock absorption, handleability, recyclability, economy and the like. The corrugated cardboard forming the box sheet 10 is a corrugated cardboard in which a core formed of a base paper in a wavy shape is bonded to a liner. For example, a core formed in a wave shape is bonded to a single liner. Single-sided corrugated cardboard sheet, double-sided corrugated cardboard sheet with a liner attached to the top of the single-sided corrugated board, double-sided corrugated board sheet with the top of the single-sided corrugated cardboard attached to one side of the double-sided corrugated board, one side to one side of the double-sided corrugated board Examples thereof include a double-sided corrugated cardboard sheet in which the tops of corrugated cardboard sheets are further bonded. Among these, double-sided corrugated cardboard sheets are preferable from the viewpoints of workability, economy, durability and the like. When the box sheet 10 is a corrugated cardboard sheet, it is preferable that the ridgeline of the core of the corrugated cardboard sheet extends in the vertical direction.

The procedure for assembling the box sheet 10 into the box body 20 will be described. First, the first side surface panel 1a located on the outside in the left-right direction (left side in FIG. 1) is folded onto the inner surface of the second side surface panel 2a connected to the first side surface panel 1a, and the outside in the left-right direction (right side in FIG. 1). ) Is folded over the inner surface of the first side surface panel 1b connected to the second side surface panel 2b, and the joint 7 is attached to the inner surface of the folded second side surface panel 2b. do. Next, the pair of first side surface panels 1a and 1b and the pair of second side surface panels 2a and 2b connected endlessly are spread out in a square cylinder shape, and the pair of second bottom flaps 6a and 6b are omitted inward. The box body 20 is bent vertically, and then the pair of first bottom flaps 5a and 5b are bent substantially vertically inward so as to be folded on the outer surface side of the second bottom flaps 6a and 6b so that the tip edges are abutted against each other. Form the bottom of the. A boxing tape X for preventing the bottom of the box body 20 from opening may be attached to the joint between the tip edges of the pair of first bottom flaps 5a and 5b. Subsequently, after accommodating a desired article or the like in the pair of first side panel 1a and 1b and the pair of second side panels 2a and 2b assembled in the shape of a square cylinder, the lock piece is as shown in FIG. The second lid flap 4a provided with 12, the first lid flap 3a not provided with the locking hole 13, and the second lid flap 4b not provided with the lock piece 12 are substantially vertically inward in this order. Bend. Subsequently, as shown in FIG. 4, the first lid flap 3b provided with the locking hole 13 is folded above the pair of second lid flaps 4a and 4b, and the lock piece 12 is placed in the locking hole 13. It is inserted to form the lid portion 21.

(Side panel)
The pair of first side surface panels 1a and 1b are formed in a rectangular shape and substantially the same shape. The left-right length of the first side surface panels 1a and 1b is larger than the left-right length of the second side surface panels 2a and 2b. As a result, the first side surface panels 1a and 1b are provided as length surface panels constituting the length surface in the box body 20. The length of the first side surface panels 1a and 1b in the left-right direction is not particularly limited, but may be, for example, 20 cm or more and 60 cm or less. The vertical length of the first side surface panels 1a and 1b can be set according to the height of the articles housed in the box body 20, and can be set to, for example, 5 cm or more and 30 cm or less.

The pair of second side surface panels 2a and 2b are formed in a rectangular shape and substantially the same shape. The left-right length of the second side panel 2a and 2b is smaller than the left-right length of the first side panels 1a and 1b. As a result, the second side surface panels 2a and 2b are provided as width surface panels constituting the width surface of the box body 20. The length of the second side surface panels 2a and 2b in the left-right direction is not particularly limited, but may be, for example, 10 cm or more and 30 cm or less. The vertical length of the second side surface panels 2a and 2b can be the same as the vertical length of the first side surface panels 1a and 1b.

(Cover flap)
The pair of first lid flaps 3a and 3b are each formed in a rectangular shape. The width of the first lid flaps 3a and 3b is substantially equal to the lateral length of the first side surface panels 1a and 1b on which the first lid flaps 3a and 3b extend. The length of the first lid flaps 3a and 3b in the extending direction can be approximately ½ of the length of the second side surface panels 2a and 2b in the left-right direction. With this configuration, the pair of first lid flaps 3a and 3b are configured so that the tip edges are butted against each other in a state of being assembled in the box body 20.

The pair of second lid flaps 4a and 4b are each formed in a rectangular shape. The width of the second lid flaps 4a and 4b is substantially equal to the lateral length of the second side surface panels 2a and 2b on which the second lid flaps 4a and 4b extend. The extension direction length of the second lid flaps 4a and 4b can be the same as the extension direction length of the first lid flaps 3a and 3b.

The first lid flaps 3a and 3b are length surface flaps extending from the upper edge of the length surface panel. The second lid flaps 4a and 4b are width surface flaps extending from the upper edge of the width surface panel. The second lid flaps 4a and 4b are narrower than the first lid flaps 3a and 3b. Since the first lid flaps 3a and 3b and the second lid flaps 4a and 4b are configured in this way, as shown in FIG. 2, the lock piece 12 is engaged in the vicinity of the corner portion of the lid portion 21 of the box body 20. It will be locked to the stop hole 13. As a result, the lock piece 12 can be easily inserted into the locking hole 13.

As described above, the lock piece 12 is defined at the corner portion on the distal end side of the second lid flap 4a. Further, the first lid flap 3b is provided with a locking hole 13 into which the lock piece 12 is inserted. Hereinafter, a specific configuration of the lock piece 12 and the locking hole 13 will be described.

[Lock piece]
The lock piece 12 is provided on one of the second lid flaps 4a of the pair of second lid flaps 4a and 4b. The lock piece 12 has a right-angled triangular shape with the tip edge and the side edge of the second lid flap 4a as two sides and the easy-to-bend line 11 as the hypotenuse. That is, the tip edge 12a of the lock piece 12 is included in the tip edge of the second lid flap 4a, and the side edge 12b of the lock piece 12 is included in the side edge of the second lid flap 4a. Above all, it is preferable that the lock piece 12 has a right-angled isosceles triangle shape. Since the lock piece 12 has a right-angled isosceles triangle shape, the box sheet 10 can more easily and stably maintain the closed state of the lid portion 21. That is, if the tip edge 12a of the lock piece 12 is longer than the side edge 12b, the lock piece 12 comes out of the locking hole 13 when the second lid flap 4a is pushed upward by the reaction force of the sheet material or the like. It will be easier. Further, when the side edge 12b of the lock piece 12 is longer than the tip edge 12a, the lock piece 12 is likely to come out of the locking hole 13 when the first lid flap 3b is pushed upward by the reaction force of the sheet material or the like. Become. On the other hand, since the lock piece 12 has a right-angled isosceles triangle shape, it is easy to prevent the lock piece 12 from coming off from the locking hole 13.

As shown in FIG. 1, the easy-to-bend line 11 and the tip edge 12a, and the easy-to-bend line 11 and the side edge 12b are connected via a slit 14. The slit 14 connecting the easy-to-bend line 11 and the tip edge 12a extends vertically from the tip edge 12a, and the slit 14 connecting the easy-to-bend line 11 and the side edge 12b extends vertically from the side edge 12b. There is. As a result, the lock piece 12 has a widening portion at its base end portion that widens from the easily bendable line 11 toward the apex of the second lid flap 4a. Both side edges of the widened portion are defined by slits 14. By having the widened portion, the lock piece 12 can easily maintain the state of being locked in the locking hole 13. That is, as will be described later, the box sheet 10 is provided with the length of the easily bendable line 11 substantially the same as the maximum width of the locking hole 13. Therefore, with the lock piece 12 inserted in the locking hole 13, a part of the widening portion is pulled upward above the first lid flap 3b to lock the widening portion as shown in FIG. It is possible to interfere with the peripheral edge of the hole 13 and easily suppress the unintended removal of the lock piece 12 from the locking hole 13.

[Locking hole]
As described above, the maximum width of the locking hole 13 is substantially the same as the length of the easily bendable line 11. As shown in FIG. 2, the locking hole 13 is formed by bending the tongue piece 15 provided on the first lid flap 3b. That is, the locking hole 13 has substantially the same shape as the tongue piece 15. In the box sheet 10, the locking hole 13 is formed by bending the tongue piece 15, so that the lock piece 12 can be sandwiched between the first lid flap 3b and the tongue piece 15, so that the lock piece 12 can be engaged. It is easy to stably maintain the inserted state into the stop hole 13. In addition, it is easy to prevent foreign matter from entering the box body 20 from the locking hole 13.

The tongue piece 15 is provided with a base portion 15a foldably connected to the first lid flap 3b at the base end edge thereof and a width widened from the tip end edge of the base portion 15a, and the lock piece 12 is inserted into the locking hole 13. It has a main body portion 15b formed to have substantially the same width as the easily bendable wire 11 so as to be formed. As shown in FIG. 2, the base end edge of the base portion 15a is arranged in parallel with the easily bendable line 11 at a position closer to the base end side than the lock piece 12 of the second lid flap 4a in the assembled state. With this configuration, the insertion of the lock piece 12 into the locking hole 13 is less likely to be hindered by the tongue piece 15. Further, it is difficult for the tongue piece 15 to press both side portions of the lock piece 12 with the lock piece 12 inserted in the locking hole 13. As a result, it is possible to more stably maintain the inserted state of the lock piece 12 into the locking hole 13 while facilitating the insertion of the lock piece 12 into the locking hole 13.

The main body portion 15b includes a first portion that widens from the proximal end side to the distal end side, a second portion that is continuously provided from the first portion and extends substantially the same width as the length of the easy-to-bend line 11, and the above. It has a third portion that is continuously provided from the second portion and narrows toward the tip edge. As described above, since the main body portion 15b has the first portion, the second portion, and the third portion, the lock piece 12 can be easily inserted into the locking hole 13, and the lock piece 12 can be easily inserted. Can be more stably maintained in the state of being inserted into the locking hole 13.

(Bottom flap)
The pair of first bottom flaps 5a and 5b are each formed in a rectangular shape. The width of the first bottom flaps 5a and 5b is substantially equal to the left-right length of the first side surface panels 1a and 1b extending from the first bottom flaps 5a and 5b. The length of the first bottom flaps 5a and 5b in the extending direction can be approximately ½ of the length of the second side surface panels 2a and 2b in the left-right direction.

The pair of second bottom flaps 6a and 6b are each formed in a rectangular shape. The width of the second bottom flaps 6a and 6b is substantially equal to the left-right length of the second side surface panels 2a and 2b extending from the second bottom flaps 6a and 6b. The extension direction lengths of the second bottom flaps 6a and 6b can be the same as the extension direction lengths of the first bottom flaps 5a and 5b.

<Advantage>
The box sheet 10 can form the lid portion 21 of the box body 20 by inserting the lock piece 12 into the locking hole 13. In the box sheet 10, the lock piece 12 is defined at the corner portion on the tip end side of the second lid flap 4a, and the lock piece 12 engages with the first lid flap 3b in a state where the bendable line 11 is bent. Since it is inserted into the stop hole 13, it is easy to insert the lock piece 12 into the locking hole 13, and it is easy to stably maintain the state in which the lock piece 12 is inserted. Therefore, the box sheet 10 can be easily maintained in a closed state without using a sealing tape.

[Other embodiments]
The above embodiment does not limit the configuration of the present invention. Therefore, the above-described embodiment can be omitted, replaced or added with components of each part of the above-described embodiment based on the description of the present specification and the common general technical knowledge, and all of them are construed to belong to the scope of the present invention. Should be.

The locking hole is not limited to the configuration formed by bending the tongue piece. For example, the locking hole may be punched over the entire circumference. Further, the specific shape of the locking hole is not limited to the shape of the embodiment.

In the above embodiment, the configuration in which the first lid flap is a length surface flap and the second lid flap is a width surface flap has been described. However, the box sheet may adopt a configuration in which the first lid flap is a width surface flap and the second lid flap is a length surface flap. Further, the box sheet may adopt a configuration in which the widths of the first lid flap and the second lid flap are the same.

In the box sheet, the specific configuration for forming the bottom of the box body is not particularly limited. For example, the box sheet may form the bottom of a so-called one-touch type, American lock type, or the like.

As described above, the box sheet according to one aspect of the present invention is suitable for easily maintaining the closed state of the lid portion of the box body.

1a, 1b 1st side panel 2a, 2b 2nd side panel 3a, 3b 1st lid flap 4a, 4b 2nd lid flap 5a, 5b 1st bottom flap 6a, 6b 2nd bottom flap 7 joint 10 box sheet 11 Easy-to-bend line 12 Lock piece 12a Tip edge 12b Side edge 13 Locking hole 14 Slit 15 Tongue piece 15a Base 15b Main body 20 Box 21 Lid X Sealing tape

Claims (5)

A pair of first side panels and a pair of second side panels that are connected alternately in the left-right direction,
The first lid flap extending from the upper edge of the first side panel and
With a second lid flap extending from the upper edge of the second side panel,
Can be assembled into a box
A box sheet in which a lid portion is formed by partially overlapping the first lid flap on the upper side of the second lid flap.
A box in which a lock piece that can be bent by an easy-to-bend line is defined at a corner on the tip end side of the second lid flap, and a locking hole into which the lock piece is inserted is provided in the first lid flap. Sheet for. The box sheet according to claim 1, wherein the lock piece has a right-angled isosceles triangle shape. The box sheet according to claim 1 or 2, wherein the locking hole is formed by bending a tongue piece provided in the first lid flap. The tongue piece is provided so as to be foldably connected to the first lid flap at the base end edge and widened from the tip edge of the base portion, and the lock piece is inserted into the locking hole. As described above, it has a main body portion formed to have substantially the same width as the easy-to-bend line.
3. The described box sheet. The first lid flap is a length surface flap, and is
The box sheet according to any one of claims 1 to 4, wherein the second lid flap is a width surface flap narrower than the first lid flap.

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