JP7081988B2 - Packaging box - Google Patents

Description

The present invention relates to a packaging box.

Packaging boxes with handles that are gripped by the carrier are known.

For example, the carton described in Patent Document 1 is provided with two handle panels on two top panels, and handle openings are opened on both sides of the handle panels. When the user places his finger in the handle opening, grasps the handle panel and lifts it up, the handle panel is cut off from the top panel with a tear line.

Special Table 2009-525931 Gazette

In the above-mentioned carton, since the handle opening is opened in the top panel to form the handle panel, the articles housed in the carton can be seen from the outside through the handle opening, and the appearance of the box is deteriorated. Further, since the handle panel is formed by cutting a part of the top panel, the strength of the top panel is remarkably lowered, and there is a possibility that the strength required for the box cannot be secured.

In order to solve the above problems, the present invention provides a packaging box capable of suppressing deterioration of appearance and deterioration of strength due to the provision of a handle portion.

In order to achieve the above object, the packaging box of the present invention is arranged with a box body including a lid wall that closes one end surface of the peripheral wall and a posture extending in the first direction on the lid wall, and is gripped by a carrier. The peripheral wall has a retaining piece connected to one side wall in the first direction, and the handle part is connected to the other side wall in the first direction of the peripheral wall. A handle body extending from the other in the first direction to one side, an insertion piece connected to one end of the handle body in the first direction and inserted inside the peripheral wall, and an insertion piece formed in the insertion piece. It includes a retaining slit into which the retaining piece is inserted while the insertion piece is inserted inside the peripheral wall.

Further, in order to achieve the above object, the packaging box of the present invention is arranged with a box body including a lid wall that closes one end surface of the peripheral wall and a posture extending in the first direction on the lid wall, and is a carrier. The peripheral wall comprises a pair of retaining pieces connected to a pair of side walls on both sides in the first direction, and the handle portion is formed separately from the box body. A pair of insertion pieces, which are connected to both ends of the handle body in the first direction and are inserted into the inside of the peripheral wall, and the pair of insertion pieces formed into the pair of insertion pieces. It includes a pair of retaining slits into which the pair of retaining pieces are inserted with the pieces inserted inside the peripheral wall.

In this case, the retaining slit is formed with a groove width that allows the insertion piece to move along a direction orthogonal to one end surface of the peripheral wall with the retaining piece inserted. Is preferable.

In this case, a first insertion folding line is formed at the boundary between the insertion piece and the handle main body, and the insertion piece is provided with the retaining slit between the insertion piece and the first insertion folding line. It is preferable that the second insertion folding line is formed in parallel with the first insertion folding line.

In this case, the handle portion is formed of a corrugated cardboard sheet, paperboard, or a resin sheet, and the handle body is connected to the grip portion gripped by the carrier and the grip portion, and is folded back to form the grip portion. It is preferable to include a grip reinforcing plate that overlaps the front surface or the back surface of the corrugated board.

In this case, it is preferable that the grip reinforcing plate is overlapped on the back side of the grip portion, and the lid wall is formed with a relief hole for arranging the grip reinforcing plate.

In this case, the box body extends from the side wall on which the retaining piece is formed toward the inside of one end surface of the peripheral wall, and is formed into an inner flap overlapping the back surface of the lid wall and the inner flap. Including an insertion slit into which the insertion piece of the handle portion arranged on the lid wall is inserted, the retaining piece crosses the insertion slit and extends from the side wall to the inner flap. It is preferable that it is formed.

According to the present invention, it is possible to suppress deterioration of the appearance and strength of the packaging box due to the provision of the handle portion.

It is a perspective view which shows the packaging box which concerns on 1st Embodiment of this invention. It is a top view which shows the blank of the packaging box which concerns on 1st Embodiment of this invention. It is a top view which shows the state which formed the bottom surface of the packaging box which concerns on 1st Embodiment of this invention. It is a perspective view which shows the state which formed the bottom surface of the packaging box which concerns on 1st Embodiment of this invention. It is a perspective view which shows the state which the inner lid wall and the like of the packaging box which concerns on 1st Embodiment of this invention are closed. It is a perspective view which shows the state which the lid wall of the packaging box which concerns on 1st Embodiment of this invention is closed. It is a perspective view which shows the process of connecting the handle part to the box body of the packaging box which concerns on 1st Embodiment of this invention. It is a perspective view explaining the operation of the handle part of the packaging box which concerns on 1st Embodiment of this invention. It is a packaging box which concerns on 2nd Embodiment of this invention, and is the top view which shows the blank of a box body and the blank of a handle part. It is a perspective view which shows the assembly process of the box body of the packaging box which concerns on 2nd Embodiment of this invention. It is a perspective view which shows the process of attaching the handle part to the box body of the packaging box which concerns on 2nd Embodiment of this invention.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In the drawing, "Fr" indicates "front", "Rr" indicates "rear", "L" indicates "left", "R" indicates "right", and "U" indicates "U". "Upper" and "D" indicate "lower". The left-right direction (first direction) is orthogonal to the front-back direction, and the up-down direction is orthogonal to the left-right direction and the front-back direction. Although terms indicating directions and positions are used in the present specification, these terms are used for convenience of explanation and do not limit the technical scope of the present invention.

[First Embodiment: Outline of packaging box]
The configuration of the packaging box 1 according to the first embodiment will be described with reference to FIGS. 1 and 2. FIG. 1 is a perspective view showing a packaging box 1. FIG. 2 is a plan view showing the blank 1A of the packaging box 1.

As shown in FIG. 1, the packaging box 1 is formed in a substantially rectangular parallelepiped shape so as to accommodate a plurality of articles (not shown). The packaging box 1 is a so-called B-type corrugated cardboard box including a top surface that is closed by a plug-in type and a bottom surface (see FIG. 3) that can be assembled by a one-touch type. Specifically, the packaging box 1 has a box body 5 including a lid wall 17 that closes an upper surface opening 5U (one end surface (see FIG. 3)) of a substantially square tubular peripheral wall 5W, and a left-right direction on the lid wall 17. It is arranged in a posture extending in the (first direction), and includes a handle portion 6 that is gripped by a carrier such as a user. The handle portion 6 is integrally formed with the box body 5.

The packaging box 1 is formed by assembling the blank 1A shown in FIG. The blank 1A is formed by punching a paper corrugated cardboard sheet with a die or the like. The blank 1A is formed of, for example, a double-sided corrugated cardboard sheet in which a front liner 9B and a back liner 9C (see FIG. 3) are bonded to the wavy inner shin 9A on the front and back sides. Note that FIG. 2 shows the front liner 9B side. In the present specification, the direction parallel to the corrugated cardboard sheet 9A is referred to as "step direction", and the direction orthogonal to the step direction is referred to as "flow direction". “X” shown in the drawing indicates “step direction”, and “Y” indicates “flow direction”. Further, in the following description of the blank 1A, the term indicating the direction or position refers to the direction or position in the assembled state of the packaging box 1.

[blank]
As shown in FIG. 2, the blank 1A includes a pair of first side walls 10, a pair of second side walls 11, a pair of lower inner flaps 12, a pair of lower outer flaps 13, an inner lid wall 14, and an inner layer. It includes a wall 15, an inner flap 16, a lid wall 17, an outer layer wall 18, and a handle portion 6.

<1st side wall, 2nd side wall, joint piece>
The pair of first side walls 10 and the pair of second side walls 11 are alternately connected in the flow direction via the first folding curve L1. The first side wall 10 is formed in a substantially rectangular shape that is longer in the flow direction than the second side wall 11. At the end of the first side wall 10 located on one side in the flow direction in the flow direction, a joint piece 19 is continuously provided via the first folding curve L1.

<Shimouchi flap>
The pair of lower inner flaps 12 are connected to one end (lower end) of the pair of second side walls 11 in the step direction via the second folding curve L2. The lower inner flap 12 is formed in a substantially trapezoidal shape that gradually narrows in width from the base end (root) toward the tip end. The dimension (extended dimension) of the lower inner flap 12 in the step direction is set to be substantially half of the dimension in the flow direction of the second side wall 11.

<Lower outer flap>
The pair of lower outer flaps 13 are connected to one end (lower end) of the pair of first side walls 10 in the step direction via the second folding curve L2. The lower outer flap 13 is formed in a substantially rectangular shape. The dimension (extended dimension) of the lower outer flap 13 in the step direction is set longer than the extended dimension of the lower inner flap 12. A substantially trapezoidal meshing recess 13A is cut out from the tip toward the base end (root) in the middle portion of the lower outer flap 13 in the flow direction. The lower outer flap 13 is formed with an inclined folding line L10 extending diagonally from the other corner of the meshing recess 13A in the flow direction toward the side of the second side wall 11. A round hole H for confirming information such as the expiration date written on the article housed in the packaging box 1 is opened near the center of the lower outer flap 13.

A lid slit 20 is formed on the first side wall 10 located on one side in the flow direction along the boundary with the lower outer flap 13. The lid slit 20 is cut along the second folding curve L2 at the central portion of the first side wall 10 in the flow direction. The lower outer flap 13 is cut out from the finger hook portion 20A having a substantially semicircular shape so as to communicate with the central portion of the lid slit 20 in the flow direction.

<Inner lid wall>
The inner lid wall 14 is continuously provided at the other end in the step direction of the first side wall 10 located on one side in the flow direction via the third folding curve L3. The inner lid wall 14 is formed in a substantially quadrangular shape narrower in the flow direction than the first side wall 10 except for the root portion. The other end of the inner lid wall 14 in the flow direction extends diagonally from the boundary between the first side wall 10 and the second side wall 11 toward the tip, and then is parallel to the first folding curve L1 (middle shin 9A) toward the tip. Extends to. That is, a defective portion 14A lacking a substantially trapezoidal shape is formed at the other end of the inner lid wall 14 in the flow direction. The dimension (extended dimension) in the step direction of the inner lid wall 14 is set to be substantially the same as the dimension in the flow direction of the second side wall 11.

<Inner wall>
The inner layer wall 15 is continuously provided at the tip end portion of the inner lid wall 14 via the fourth folding curve L4. The inner layer wall 15 is formed in a substantially quadrangular shape having the same width as the tip end portion of the inner lid wall 14. The dimension of the inner layer wall 15 in the step direction is set shorter than the dimension (height) of the first side wall 10 in the step direction. In the inner lid wall 14 described above, a finger hook hole 14B having a substantially semicircular shape is opened along the central portion of the fourth folding curve L4 in the flow direction.

<Inner flap>
The inner flap 16 is connected to the other end of the second side wall 11 located between the pair of first side walls 10 in the step direction via the third folding curve L3. The inner flap 16 is formed in a substantially trapezoidal shape that gradually narrows in width from the base end (root) toward the tip end. One end of the inner flap 16 in the flow direction extends diagonally from the boundary between the first side wall 10 and the second side wall 11 toward the tip. The inclination of the inner flap 16 is formed so as to be symmetrical with the inclination of the root portion of the inner lid wall 14. The dimension (extended dimension) of the inner flap 16 in the step direction is set shorter (about 1/3) than the extended dimension of the inner lid wall 14.

(Insert slit)
The inner flap 16 is formed with an insertion slit 30 along the boundary with the second side wall 11. The insertion slit 30 is cut along the third folding curve L3 at the central portion of the inner flap 16 in the flow direction.

(Retaining piece)
Further, on the second side wall 11 and the inner flap 16, a retaining piece 41 is formed in a range surrounded by a substantially rectangular cut. The retaining piece 41 is formed from the second side wall 11 to the inner flap 16 across the central portion of the insertion slit 30 in the flow direction. The retaining piece 41 is continuously provided on the second side wall 11 via the first retaining folding line L11. The retaining piece 41 is formed with a second retaining folding line L12 on substantially the same straight line as the third folding curve L3. The first retaining line L11 and the second retaining folding line L12 are formed in parallel.

<Cover wall>
The lid wall 17 is connected to the other end of the first side wall 10 located between the pair of second side walls 11 in the step direction via the third folding curve L3. The lid wall 17 is formed in a substantially rectangular shape having substantially the same width as the first side wall 10. To be precise, the lid wall 17 has a substantially rectangular relief hole 17A, and the lid wall 17 is formed in a substantially rectangular annular shape. The dimension (extended dimension) in the step direction of the lid wall 17 is set to be slightly longer than the extended dimension of the inner lid wall 14. A substantially square-shaped insertion recess 32 is cut out at one end of the lid wall 17 in the flow direction. The insertion recess 32 is formed to have substantially the same length as the insertion slit 30. A pair of insertion convex portions 32B are projected from the central portion of the insertion recess 32 in the step direction with a substantially semicircular finger hook portion 32A interposed therebetween.

<Outer wall>
The outer layer wall 18 is continuously provided at the tip end portion of the lid wall 17 via the fourth folding curve L4. The outer layer wall 18 is formed in a substantially trapezoidal shape that gradually narrows in width from the base end (root) toward the tip end. The dimension (extended dimension) in the step direction of the outer layer wall 18 is set to be substantially the same as the dimension (height) in the step direction of the first side wall 10. A lid piece 21 is continuously provided at the tip of the outer layer wall 18 via a lid folding line L13. The lid piece 21 is formed in a size that can be inserted into the lid slit 20.

<Handle part>
The handle portion 6 is continuously provided at the other end portion in the step direction of the second side wall 11 located on the other side in the flow direction via the third folding curve L3. The handle portion 6 includes a handle main body 50, an insertion piece 31, and a retaining slit 40.

(Handle body)
The handle body 50 includes a pair of handle leg portions 51, a grip portion 52, and a pair of grip reinforcing plates 53. The handle body 50 is formed in a substantially butterfly shape as a whole, which is bound by the grip portion 52. The dimension (extended dimension) in the step direction of the handle body 50 is set to be substantially the same as the dimension in the flow direction of the first side wall 10.

The handle leg portion 51 on the base end side is continuously provided on the second side wall 11 via the third folding curve L3, and is formed in a substantially trapezoidal shape that gradually narrows from the base end (root) toward the tip end. .. The handle leg portion 51 on the distal end side is formed in a substantially trapezoidal shape symmetrical with the handle leg portion 51 on the proximal end side in the step direction. The grip portion 52 is erected between a pair of handle leg portions 51 via a handle folding line L14, and is a portion gripped by a user (carryer).

The pair of grip reinforcing plates 53 are arranged in a constricted portion surrounded by the pair of handle leg portions 51 and the grip portion 52, respectively. The pair of grip reinforcing plates 53 are connected to both ends of the grip portion 52 in the flow direction via two folding lines L15. The two folding lines L15 are formed in parallel with each other in close proximity to each other. A cut line 53A is formed at the tip of each grip reinforcing plate 53.

(Insert piece)
The insertion piece 31 is continuously provided at the tip end portion (one end portion in the first direction) of the handle body 50 (handle leg portion 51). The insertion piece 31 is formed to have a size that allows it to be inserted into the insertion slit 30. A first insertion folding line L16 is formed at the boundary between the insertion piece 31 and the handle body 50 (handle leg portion 51 on the tip side). A second insertion folding line L17 is formed in the insertion piece 31 in parallel with the first insertion folding line L16 with a retaining slit 40 (described later) sandwiched between the insertion piece 31 and the first insertion folding line L16. ing.

(Retaining slit)
The retaining slit 40 is formed on the base end side (root side) of the insertion piece 31. The retaining slit 40 is formed in a size that allows the retaining piece 41 to be inserted. The width (groove width) of the retaining slit 40 in the step direction is set sufficiently wider than the thickness (about 1.5 mm) of the corrugated cardboard sheet (retaining piece 41). The groove width of the retaining slit 40 is preferably set to about 2 to 10 times the thickness of the retaining piece 41, and is set to about 10 mm in the first embodiment. Although the details will be described later, in the retaining slit 40, the insertion piece 31 moves along the vertical direction (the direction orthogonal to the upper surface opening 5U (one end surface) of the peripheral wall 5W) with the retaining piece 41 inserted. It is formed in a groove width that allows this. A finger hook portion 40A having a substantially semicircular shape is cut out in the handle leg portion 51 on the tip side so as to communicate with the central portion of the retaining slit 40 in the flow direction.

The first to fourth folding curves L1 to L4, the first retaining line L11, the second retaining folding line L12, the lid folding line L13, the handle folding line L14, the folding line L15, the first insertion folding line L16, and the like. The second insertion folding line L17 is a general-purpose ruled line in which a corrugated sheet is crushed linearly in the thickness direction from the back liner 9C side. The general-purpose ruled line has a function of bending the corrugated cardboard sheet so that the back liner 9C faces inward. Further, the inclined folding line L10 is a reverse ruled line obtained by crushing a corrugated cardboard sheet linearly in the thickness direction from the front liner 9B side. The reverse ruled line has a function of bending the corrugated cardboard sheet so that the front liner 9B faces inward. These types of the first to fourth folding curves L1 to L4 and the like are examples, and the first to fourth folding curves L1 to L4 and the like are not limited to the above, and a plurality of cuts are formed on the ruled line at predetermined intervals. Any line for bending the corrugated cardboard sheet, such as a lead ruled line, may be used.

[Assembly of packaging box]
Next, the assembly process of the packaging box 1 will be described with reference to FIGS. 1, 3 to 7. FIG. 3 is a plan view showing a state in which the bottom surface of the packaging box 1 is formed. FIG. 4 is a perspective view showing a state in which the bottom surface of the packaging box 1 is formed. FIG. 5 is a perspective view showing a state in which the inner lid wall 14 and the like are closed. FIG. 6 is a perspective view showing a state in which the lid wall 17 is closed. FIG. 7 is a perspective view showing a process of connecting the handle portion 6 to the box body 5. It is assumed that the packaging box 1 is folded substantially flat. Specifically, in the blank 1A, the first side wall 10 and the second side wall 11 on both sides in the flow direction are folded back along the first folding curve L1, and the joint piece 19 is on the back surface (inner surface) of the folded second side wall 11. Is glued. Further, the lower outer flap 13 is folded back at the inclined folding line L10, and the lower inner and lower outer flaps 12 and 13 are folded back at the second folding curve L2 so as to overlap the back surfaces (inner surfaces) of the first and second side walls 10 and 11. ing. The corner portion of the lower outer flap 13 folded back at the inclined folding line L10 is adhered to the surface (outer surface) of the lower inner flap 12.

As shown in FIGS. 3 and 4, the operator bends the first side wall 10 and the second side wall 11 along the first folding curve L1 so as to be orthogonal to each other. That is, the worker raises the folded packaging box 1. When the pair of first side walls 10 face each other in the front-rear direction and the pair of second side walls 11 face each other in the left-right direction, a substantially square cylindrical peripheral wall 5W is formed (see FIG. 4). In the process of forming the peripheral wall 5W, the lower inner flap 12 and the lower outer flap 13 are extruded from the inside to the outside (downward) of the peripheral wall 5W, and the lower outer flap 13 returns to a flat state from being folded at the inclined fold line L10. start. When the pair of lower outer flaps 13 return to flatness, the meshing recesses 13A are in a state of meshing with each other (see FIG. 3).

As a result, the lower inner flap 12 and the lower outer flap 13 close the lower surface opening of the peripheral wall 5W, and the bottom surface of the packaging box 1 is configured. Then, the worker arranges a plurality of articles on the bottom surface of the packaging box 1.

Next, the operator closes the upper surface opening 5U of the peripheral wall 5W and seals the packaging box 1.

Specifically, as shown in FIGS. 4 and 5, the operator bends the inner layer wall 15 along the fourth folding curve L4, inserts the inner layer wall 15 into the inside of the peripheral wall 5W, and inserts the inner lid wall 14 into the third. Bend along the folding curve L3. Subsequently, the operator bends the inner flap 16 along the third folding curve L3. The inner flap 16 extends from the upper end of the second side wall 11 on which the retaining piece 41 is formed toward the inside of the upper surface opening 5U (one end surface) of the peripheral wall 5W, and closes the defective portion 14A of the inner lid wall 14. (See FIG. 5). The retaining piece 41 is not bent together with the inner flap 16 but is hollowed out from the inner flap 16 or the like (see FIG. 5).

Next, as shown in FIGS. 5 and 6, the operator bends the lid wall 17 along the third folding curve L3 and superimposes it on the surface (upper surface) of the inner lid wall 14 and the inner flap 16. Subsequently, the operator bends the outer layer wall 18 along the fourth folding curve L4 and superimposes it on the surface (front surface) of the first side wall 10, while bending the lid piece 21 along the lid folding line L13 to form the lid slit 20 (peripheral wall). Insert it into (inside 5W). As a result, the inner lid wall 14, the inner flap 16, and the lid wall 17 close the upper surface opening 5U of the peripheral wall 5W, and the top surface of the packaging box 1 is configured (see FIG. 6).

In this state, as shown in FIG. 6, most of the inner lid wall 14 is exposed inside the relief hole 17A opened in the lid wall 17. Further, the inner flap 16 overlaps the back surface of the lid wall 17. Further, the insertion slit 30 cut along the boundary between the second side wall 11 and the inner flap 16 is open (exposed) inside the insertion recess 32 formed in the lid wall 17. Further, the pair of insertion convex portions 32B projecting from the insertion recess 32 are arranged corresponding to the holes hollowed out in the retaining piece 41 in the inner flap 16.

Next, as shown in FIG. 6, the operator folds the pair of grip reinforcing plates 53 along the folding line L15 and overlaps them on the back surface of the grip portion 52, while crossing the pair of grip reinforcing plates 53 to cross the cut line 53A. Engage with each other. Then, the pair of grip reinforcing plates 53 are held so as to overlap the back side of the grip portion 52. As a result, the grip portion 52 and the pair of grip reinforcing plates 53 form a double wall structure (partly a triple wall structure).

Next, as shown in FIG. 7, the operator bends the handle portion 6 along the third folding curve L3 and overlaps the insertion piece 31 with the surface (upper surface) of the lid wall 17, while inserting the insertion piece 31 into the first insertion folding line L16. Bend it with and insert it into the insertion slit 30 (inside the peripheral wall 5W). Subsequently, as shown in FIG. 1, the operator bends the base end side of the retaining piece 41 outward with the first retaining folding line L11, and bends the tip end side of the retaining piece 41 to the second retaining folding line L12. Bend inward with, and insert the tip end side of the retaining piece 41 into the retaining slit 40. To be precise, the retaining piece 41 is inserted into the lower side of the lid wall 17 and is fitted into a hole formed by hollowing out itself from the inner flap 16.

As a result, the assembly work (sealing work) of the packaging box 1 is completed (see FIG. 1). In this state, the lid wall 17 closes the upper surface opening 5U (one end surface) of the peripheral wall 5W, and the handle portion 6 is arranged on the lid wall 17 and is bridged between the pair of left and right second side walls 11. .. Further, the right end portion of the handle portion 6 is attached to the second side wall 11 on the right side by a double lock structure including an insertion piece 31 inserted into the insertion slit 30 and a retaining piece 41 inserted into the retaining slit 40. It is connected.

Further, the pair of grip reinforcing plates 53 folded back on the back surface of the grip portion 52 are arranged inside the relief hole 17A of the lid wall 17. Since the pair of grip reinforcing plates 53 are arranged on the inner lid wall 14 which is one step lower than the lid wall 17, the grip portion 52 does not protrude unnaturally, and the grip portion 52 has a posture substantially parallel to the lid wall 17. Is placed on the lid wall 17.

[Action of handle]
Next, with reference to FIG. 8, the operation of the handle portion 6 when the user carries the packaging box 1 will be described. FIG. 8 is a perspective view illustrating the operation of the handle portion 6. It is assumed that the retaining piece 41 is located on the upper edge side of the retaining slit 40.

The user grips the grip portion 52 (grip reinforcing plate 53) arranged inside the relief hole 17A and lifts the grip portion 52. The grip portion 52 is lifted while being slightly bent (while bending) by a pair of handle folding lines L14. Further, since the pair of handle leg portions 51 are attracted to each other due to the bending of the grip portion 52, the posture is slightly inclined upward from the outside in the left-right direction toward the center.

As the grip portion 52 is lifted, the insertion piece 31 is pulled out from the insertion slit 30, and the grip portion 52 moves upward from the lid wall 17. To be precise, the handle body 50 rotates upward with the connecting portion (third folding curve L3) with the second side wall 11 as a fulcrum, and the insertion piece 31 has a second difference from the first insertion folding line L16. It is pulled out while bending at the folding line L17.

When the insertion piece 31 is pulled out and the retaining piece 41 comes into contact with the lower edge portion of the retaining slit 40, the extraction of the insertion piece 31 is restricted. As a result, the user can firmly grip the grip portion 52 (grip reinforcing plate 53) separated upward from the lid wall 17, and the packaging box 1 can be easily lifted and carried.

Since the retaining piece 41 is sandwiched between the insertion piece 31 and the lid wall 17 while the user lifts the grip portion 52, it is restricted that the retaining piece 41 comes out of the retaining slit 40. .. That is, even when the user lifts the grip portion 52, the double lock structure functions reliably and prevents the handle portion 6 from separating from the box body 5.

In the packaging box 1 according to the first embodiment described above, the handle main body 50 is connected to the second side wall 11 on the left side (the other side in the first direction) of the peripheral wall 5W, and extends from the left side to the right side. Further, the insertion piece 31 connected to the tip of the handle body 50 is inserted into the insertion slit 30 (inside the peripheral wall 5W). Further, the retaining piece 41 is continuously provided on the upper side (upper surface opening 5U side) of the second side wall 11 on the right side (one in the first direction), and the insertion piece 31 is inserted into the insertion slit 30 (inside the peripheral wall 5W). It is configured to be inserted into the retaining slit 40 in the state of being. That is, the right side (one in the first direction) of the handle portion 6 is attached to the box body 5 by a double lock structure including a retaining piece 41 and the like and an insertion piece 31 and the like. According to this configuration, when the packaging box 1 is exhibited, there is no opening in the visible range of the box body 5, and it is possible to prevent the articles housed in the box body 5 from being seen from the outside. can. As a result, deterioration of the appearance of the packaging box 1 due to the provision of the handle portion 6 can be suppressed. As a result, for example, it is possible to provide a packaging box 1 suitable for accommodating an article for gifts. Further, since the handle portion 6 is formed as a portion different from the lid wall 17, the strength of the lid wall 17 can be maintained higher than that in the case where the handle portion 6 is formed by cutting the lid wall 17. As a result, it is possible to suppress a decrease in the strength of the packaging box 1 (cover wall 17) due to the provision of the handle portion 6.

Further, in the packaging box 1 according to the first embodiment, the retaining piece 41 is inserted into the retaining slit 40 with play. According to this configuration, since the insertion piece 31 can be moved within the range of the gap between the retaining slit 40 and the retaining piece 41, the insertion piece 31 is moved upward as the user lifts the handle body 50. Can be pulled out to. As a result, the handle body 50 floats (separates) from the lid wall 17, so that the user can easily grip the handle body 50.

Further, in the packaging box 1 according to the first embodiment, the insertion piece 31 is slanted out due to the bending of the handle body 50, but the insertion piece 31 has a first folding curve L1 and a second folding curve L2. Since it is folded inward and tilted toward the center (inside), the insertion piece 31 can be smoothly pulled out.

Further, in the packaging box 1 according to the first embodiment, the pair of grip reinforcing plates 53 are folded back and overlapped with the back surface of the grip portion 52. According to this configuration, the grip portion 52 and the grip reinforcing plate 53 form a double wall structure, so that the grip portion 52 can be reinforced and the grip portion 52 that is easy for the user to grip can be provided. ..

Further, in the packaging box 1 according to the first embodiment, a relief hole 17A for arranging the grip reinforcing plate 53 is formed in the lid wall 17. According to this configuration, since the pair of grip reinforcing plates 53 folded back on the back side of the grip portion 52 enter the relief hole 17A, the surface (upper surface) of the handle body 50 can be made substantially flat. As a result, a plurality of packaging boxes 1 can be stably stacked. Further, since the relief hole 17A is formed in the lid wall 17, a step is formed between the inner lid wall 14 and the grip portion 52, so that the user can easily grasp the grip portion 52.

Further, according to the packaging box 1 according to the first embodiment, the lid wall 17 overlaps the surface of the inner flap 16 and the handle portion 6 overlaps the surface of the lid wall 17, so that the upper surface opening 5U (one end surface) of the peripheral wall 5W is overlapped. ) Can be closed without a gap. As a result, the articles housed in the box 5 are substantially completely covered, and the appearance of the packaging box 1 can be kept good.

[Second Embodiment]
Next, the packaging box 2 according to the second embodiment will be described with reference to FIG. 9. FIG. 9 is a plan view showing the blank 5A of the box body 5 and the blank 7A of the handle portion 7. In the following description, the same or corresponding configurations as those of the packaging box 1 according to the first embodiment are designated by the same reference numerals, and the same or corresponding description as that of the packaging box 1 will be omitted.

In the packaging box 1 according to the first embodiment, the handle portion 6 is connected to the box body 5 (second side wall 11), but in the packaging box 2 according to the second embodiment, the handle portion 7 is the box body 5. It is formed as a separate member separated from.

The blank 7A of the handle portion 7 has a pair of insertion pieces 31 connected to both ends of the handle body 50 in the step direction (first direction) and a pair of retaining slits 40 formed in the pair of insertion pieces 31. And, including.

Further, the blank 5A of the box body 5 (peripheral wall 5W) is formed from the pair of inner flaps 16 connected to the upper end of the pair of second side walls 11 and the upper side (upper surface opening 5U side) of the pair of second side walls 11. It includes a pair of retaining pieces 41 formed over a pair of inner flaps 16. A pair of insertion slits 30 are formed in the pair of inner flaps 16.

Further, in the packaging box 2 (blank 5A of the box body 5), the inner layer wall 15 is omitted. A pair of defective portions 14A are formed at both ends of the inner lid wall 14 in the flow direction. The inner lid wall 14 is formed with a lid slit 20 along the boundary with the first side wall 10. On the first side wall 10 and the inner lid wall 14, a lid retaining piece 23 is formed in a range surrounded by a substantially rectangular cut. The lid retaining piece 23 is formed from the first side wall 10 to the inner lid wall 14 across the central portion of the lid slit 20 in the flow direction. The lid retaining piece 23 is continuously provided on the first side wall 10 via a first lid folding line L20 (general-purpose ruled line). The second lid folding line L21 (general-purpose ruled line) is formed on the lid retaining piece 23 on substantially the same straight line as the third folding curve L3. The first lid folding line L20 and the second lid folding line L21 are formed in parallel.

Further, in the packaging box 2 (blank 5A of the box body 5), the outer layer wall 18 is omitted. The lid piece 21 is connected to the tip end portion of the lid wall 17 via the lid folding line L13. A retaining slit 22 for the lid is formed on the base end side (root side) of the lid piece 21. The retaining slit 22 for the lid is formed in a size that allows the retaining piece 23 for the lid to be inserted. The groove width of the retaining slit 22 for the lid is set to be slightly wider than the thickness of the corrugated cardboard sheet. A finger hook portion 22A having a substantially semicircular shape is cut out in the lid wall 17 so as to communicate with the central portion of the lid retaining slit 22 in the flow direction.

[Assembly of packaging box]
Next, the assembly process of the packaging box 2 will be briefly described with reference to FIGS. 10 and 11. FIG. 10 is a perspective view showing an assembly process of the box body 5. FIG. 11 is a perspective view showing a process of attaching the handle portion 7 to the box body 5.

As shown in FIG. 10, the operator inserts the inner lid wall 14 and the pair of inner flaps 16 after the lower inner flap 12 and the lower outer flap 13 close the lower surface opening of the peripheral wall 5W to accommodate a plurality of articles. Bend along the third folding curve L3. The pair of retaining pieces 41 are hollowed out from the inner flap 16 and the like, and the retaining retaining piece 23 for the lid is hollowed out from the inner lid wall 14 and the like.

Next, as shown in FIGS. 10 and 11, the operator bends the lid wall 17 along the third folding curve L3 and superimposes it on the surface (upper surface) of the inner lid wall 14 and the inner flap 16 while the lid piece 21 Is bent along the lid folding line L13 and inserted into the lid slit 20. Subsequently, the operator bends the lid retaining piece 23 outward at the first lid folding line L20, bends the lid retaining piece 23 inward at the second lid folding line L21, and bends the lid retaining piece 23 inward. Insert the tip side into the retaining slit 22 for the lid. As described above, the inner lid wall 14, the pair of inner flaps 16 and the lid wall 17 close the upper surface opening 5U of the peripheral wall 5W, and the top surface of the packaging box 2 is formed.

Next, the operator folds the pair of grip reinforcing plates 53 back to the back surface of the grip portion 52, and bends the pair of insertion pieces 31 along the first insertion folding line L16. The operator inserts the pair of insertion pieces 31 into the pair of insertion slits 30 (inside the peripheral wall 5W) while overlapping the handle portion 7 on the surface (upper surface) of the lid wall 17. With the pair of insertion pieces 31 inserted into the pair of insertion slits 30 (inside the peripheral wall 5W), the operator inserts the pair of retaining pieces 41 into the pair of retaining slits 40. As a result, the assembly work (sealing work) of the packaging box 2 is completed.

[Action of handle]
The operation of the handle portion 7 when the user carries the packaging box 2 is substantially the same as the operation of the handle portion 6 of the packaging box 1 according to the first embodiment described above. That is, when the user lifts the grip portion 52, the pair of insertion pieces 31 are each pulled out from the insertion slit 30, and the grip portion 52 moves upward from the lid wall 17. When the pair of insertion pieces 31 are pulled out and the pair of retaining pieces 41 come into contact with the lower edge portion of the pair of retaining slits 40, the pulling out of each of the insertion pieces 31 is restricted.

In the packaging box 2 according to the second embodiment described above, the handle portion 7 (handle main body 50) is a member separate and independent from the box body 5, and is composed of a retaining piece 41 and the like and an insertion piece 31 and the like. The double lock structure allows it to be securely attached to the box body 5. According to this configuration, the user can select the presence or absence of the handle portion 7, and the handle portion 7 can be attached to the box body 5 only when necessary.

The packaging box 1 according to the first embodiment includes the inner layer wall 15 and the outer layer wall 18, but similarly to the packaging box 2 according to the second embodiment, the packaging box 1 to the inner layer wall 15 and the outer layer wall 18 are provided. May be omitted. In this case, it is preferable to change the positions of the lid slit 20 and the lid piece 21 to the same positions as the packaging box 2 according to the second embodiment.

Further, in the packaging box 2 according to the second embodiment, the retaining piece 23 for the lid and the retaining slit 22 for the lid are provided as means for fixing the lid wall 17, but the retaining piece 23 for the lid and the retaining slit 22 for the lid are provided. The retaining slit 22 may be omitted.

In the packaging boxes 1 and 2 according to the first and second embodiments, the insertion slit 30 is formed in the inner flap 16 and the insertion piece 31 is inserted into the insertion slit 30, but this is the present invention. Not limited to. For example, the inner flap 16 and the insertion slit 30 may be omitted, and the insertion piece 31 may be inserted inside the peripheral wall 5W through the gap between the lid wall 17 and the second side wall 11.

Further, in the packaging boxes 1 and 2 according to the first and second embodiments, the lid wall 17 constitutes the top surface of the packaging boxes 1 and 2, and the handle portions 6 and 7 are arranged on the lid wall 17. , The present invention is not limited to this. For example, the lid wall 17 may form the side surfaces of the packaging boxes 1 and 2, and the handle portions 6 and 7 may be arranged on the lid wall 17 (side surface). Further, for example, a pair of lid walls 17 and a pair of handle portions 6 and 7 may be provided on the pair of facing side surfaces of the packaging box 1.

Further, in the packaging boxes 1 and 2 according to the first and second embodiments, the lid wall 17 is connected to the first side wall 10, and the handle portions 6 and 7 are connected to the second side wall 11. The invention is not limited to this. For example, the lid wall 17 may be connected to the second side wall 11, and the handle portions 6 and 7 may be connected to the first side wall 10. Further, the lid wall 17 may be a separate member separated from the peripheral wall 5W (first side wall 10 or second side wall 11).

Further, in the packaging boxes 1 and 2 according to the first and second embodiments, a pair of grip reinforcing plates 53 are continuously provided on the grip portion 52, but the present invention is not limited to this. For example, one grip reinforcing plate 53 may be continuously provided to the grip portion 52. Further, for example, the grip reinforcing plate 53 may be omitted. In this case, the relief hole 17A of the lid wall 17 can be omitted.

Further, in the packaging boxes 1 and 2 according to the first and second embodiments, the grip reinforcing plate 53 overlaps the back surface of the grip portion 52, but the present invention is not limited to this, and the grip reinforcing plate 53 is folded back to form the grip portion 52. It may overlap with the surface of. In this case, the relief hole 17A of the lid wall 17 can be omitted.

Further, in the packaging boxes 1 and 2 according to the first and second embodiments, the bottom surface is a so-called one-touch bottom, but the present invention is not limited to this. The bottom surface of the packaging boxes 1 and 2 may be, for example, an American lock (hell bottom) or a bottom surface in which a pair of outer flaps are butted against each other.

Further, the packaging boxes 1 and 2 according to the first and second embodiments are so-called B-type corrugated cardboard boxes, but the present invention is not limited thereto. As another example of the lid wall, a pair of outer flaps may be abutted top surface, and the handle portions 6 and 7 may be arranged on the top surface. In addition, the handles 6 and 7 may be applied to various types of cardboard boxes.

Further, the packaging boxes 1 and 2 according to the first and second embodiments are formed of a corrugated cardboard sheet, but the present invention is not limited to this, and the packaging boxes 1 and 2 are formed of, for example, paperboard or a resin plate (resin sheet). You may.

It should be noted that the description of the above embodiment shows one aspect of the packaging box according to the present invention, and the technical scope of the present invention is not limited to the above embodiment.

1,2 Packaging box 5 Box body 5W Peripheral wall 6,7 Handle part 10 First side wall (side wall)
11 Second side wall (side wall)
16 Inner flap 17 Lid wall 17A Missing hole 30 Insertion slit 31 Insertion piece 40 Retaining slit 41 Retaining piece 50 Handle body 52 Grip part 53 Grip reinforcement plate L16 1st insertion fold line L17 2nd insertion fold line

Claims (6)

A lid wall (5W) that closes one end surface of a peripheral wall (5W) formed by a pair of side walls (11) facing the first direction and a pair of other side walls (10) facing the second direction orthogonal to the first direction. The box body (5) including 17) and
A handle portion (6) arranged on the lid wall in a posture extending in the first direction and gripped by a carrier is provided.
The peripheral wall has a retaining piece (41) connected to the side wall (11) in one of the first directions.
The handle part is
With the handle body (50), which is connected to the side wall of the other side wall in the first direction of the peripheral wall, extends from the other side wall in the first direction to one side, and has the same length in the first direction as the other side wall. ,
An insertion piece (31) connected to one end of the handle body in the first direction and inserted inside the peripheral wall,
Includes a retaining slit (40) formed in the insertion piece and into which the retaining piece is inserted with the insertion piece inserted inside the peripheral wall.
The retaining slit is formed with a groove width that allows the insertion piece to move along a pull-out direction orthogonal to one end surface of the peripheral wall in a state where the retaining piece is inserted.
The groove width of the retaining slit is set wider than the thickness of the retaining piece so that the retaining piece can be inserted with play.
When the handle portion is not gripped by the carrier, the handle body is arranged on the lid wall in a posture parallel to the lid wall in a state of being bridged between the pair of the side walls, and the insertion piece is placed. It is inserted into the inside of the peripheral wall, and the retaining piece is inserted into the retaining slit and is located on the downstream side in the pull-out direction in the retaining slit.
When the handle portion is gripped by the carrier, the handle body is pulled away from the lid wall while bending itself while pulling out the insertion piece from the inside of the peripheral wall, and the retaining piece is pulled out from the lid wall. A packaging box characterized in that the pulling out of the insertion piece is restricted by abutting on the upstream side edge portion in the pulling out direction of the slit . A lid wall (5W) that closes one end surface of a peripheral wall (5W) formed by a pair of side walls (11) facing the first direction and a pair of other side walls (10) facing the second direction orthogonal to the first direction. The box body (5) including 17) and
A handle portion (7) arranged on the lid wall in a posture extending in the first direction and gripped by a carrier is provided.
The peripheral wall has a pair of retaining pieces (41) connected to the pair of side walls (11) on both sides in the first direction.
The handle part is
A handle body (50) formed separately from the box body and having the same length in the first direction as the other side wall .
A pair of insertion pieces (31) that are connected to both ends of the handle body in the first direction and are inserted inside the peripheral wall.
It includes a pair of retaining slits (40) formed in the pair of insertion pieces and into which the pair of retaining pieces are inserted with the pair of insertion pieces inserted inside the peripheral wall .
The retaining slit is formed with a groove width that allows the insertion piece to move along a direction orthogonal to one end surface of the peripheral wall in a state where the retaining piece is inserted.
The groove width of the retaining slit is set wider than the thickness of the retaining piece so that the retaining piece can be inserted with play.
When the handle portion is not gripped by the carrier, the handle body is arranged on the lid wall in a posture parallel to the lid wall in a state of being bridged between the pair of the side walls, and the insertion piece is placed. It is inserted into the inside of the peripheral wall, and the retaining piece is inserted into the retaining slit and is located on the downstream side in the pull-out direction in the retaining slit.
When the handle portion is gripped by the carrier, the handle body is pulled away from the lid wall while bending itself while pulling out the insertion piece from the inside of the peripheral wall, and the retaining piece is pulled out from the lid wall. A packaging box characterized in that the pulling out of the insertion piece is restricted by abutting on the upstream side edge portion in the pulling out direction of the slit . A first insertion folding line (L16) is formed at the boundary between the insertion piece and the handle body.
A second insertion folding line (L17) is formed in the insertion piece in parallel with the first insertion folding line with the retaining slit sandwiched between the insertion piece and the first insertion folding line. The packaging box according to claim 1 or 2 . The handle portion is formed of a corrugated cardboard sheet, paperboard, or a resin sheet.
The handle body is
The grip part (52) gripped by the carrier and
The packaging box according to any one of claims 1 to 3 , further comprising a grip reinforcing plate (53) connected to the grip portion and folded back to overlap the front surface or the back surface of the grip portion. The grip reinforcing plate is laminated on the back side of the grip portion.
The packaging box according to claim 4 , wherein the lid wall is formed with an escape hole (17A) for arranging the grip reinforcing plate. The box body is
An inner flap (16) extending from the side wall on which the retaining piece is formed toward the inside of one end surface of the peripheral wall and overlapping the back surface of the lid wall,
Including an insertion slit (30) formed in the inner flap and into which the insertion piece of the handle portion arranged on the lid wall is inserted.
The packaging box according to any one of claims 1 to 5 , wherein the retaining piece is formed from the side wall to the inner flap across the insertion slit.

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