JP5134734B1 - Packaging box - Google Patents

Abstract

Provided is a packaging box that exhibits sufficient strength against a load applied to a cradle from above and a load that attempts to incline a left side plate and a right side plate with the cradle inward.
A right receiving base that is bent inward at an upper end edge of a right side plate and extends along the upper end edge of the right side plate, and extends downward from an inner end edge of the right receiving base. And a left pedestal 51 extending along the upper edge of the left side plate 14 while being bent inwardly at the upper end edge of the left side plate 14. A left reinforcing portion 50 having a left leg portion 52 extending downward from the inner end edge of the left cradle 51 and reaching the bottom plate 20, and the top plate 30. The right end edges 32a and 34a are provided on the right side plate. 12 and a bridge portion 39 whose left end edges 32b and 34b are in contact with the inner surface of the left side plate 14.
[Selection] Figure 2

Description

  The present invention relates to a packaging box such as a cardboard box that is stacked (stacked) in a state where stored items are stored.

  If the items to be stored in a packaging box such as a cardboard box are bottles or cans, they must support the weight when stacking (stacking) the packaging boxes in which the items are stored. Is possible.

  However, when the stored item is a liquid food or a liquid shampoo, for example, a standing pouch, it is necessary to support the weight by stacking the packaging boxes.

  Among such packaging boxes, conventionally, a storage box is known that forms a pedestal that can be stacked when a specific portion is separated and removed (see, for example, Patent Document 1).

  In this apparatus, a part of the front side plate, the top plate, and the rear side plate is separated and removed, so that a pedestal is formed on each of the upper ends of the right side plate and the left side plate. The cradle is constituted by a part of the inner and outer flaps and the body plate, and is formed in a strip shape extending in the front-rear direction along the upper ends of the right side plate and the left side plate.

  Since this storage box has cradles on the left and right sides, it can be stacked.

Noto 3046950

  However, the above-mentioned storage box is not always sufficient for a load applied to the cradle from above or for a load that tries to incline the left and right side plates with the cradle inward. It does not have strength.

  Therefore, the present invention has been made in view of the above-mentioned circumstances, and in response to a load applied to the cradle from above, the left and right plates with the cradle are also brought down inside. An object of the present invention is to provide a packaging box capable of exhibiting sufficient strength against a load to be applied.

The invention according to claim 1 is formed in a rectangular parallelepiped shape, a rectangular bottom plate, and a first side plate and a third side plate that are erected on the first side and the third side that face each other, The second side plate and the fourth side plate standing on the second side and the fourth side opposite to each other, and the first side plate bent inward at the upper edge of the first side plate, respectively. In the packaging box provided with the top plate comprised by the top flap and the 3rd top flap bent toward the inner side in the upper end edge of the 3rd side plate, toward the inner side in the upper end edge of the 2nd side plate A second pedestal that is bent and extends along the upper edge of the second side plate, and a second leg that extends downward from the inner edge of the second pedestal and reaches the bottom plate. The second reinforcing portion and the fourth side plate are bent inward at the upper end edge of the fourth side plate, and A fourth reinforcing portion having a fourth pedestal extending along the upper edge of the side plate, and a fourth leg extending to the bottom plate so as to extend downwardly from the inner edge of the fourth cradle, the first A first bridge bent downward from the inner edge of the top flap, and a third bridge bent downward from the inner edge of the third top flap and superimposed on the first bridge The first bridge and the third bridge have one end engaged with a second slit formed in the second cradle and the second leg from above. One end edge is brought into contact with the inner side surface of the second side plate, and the other end is engaged from above with a fourth slit formed in the fourth base and the fourth leg. The other edge is in contact with the inner surface of the fourth side plate, and the first bridge and the third bridge are A second engagement that engages with the one end so as to intersect the second leg and restricts the position of the second leg to prevent the second leg from falling inward and outward. It has a joint part and engages with the other end so as to intersect with the fourth leg part to regulate the position of the fourth leg part and fall down to the inside and outside of the fourth leg part It has the 4th engaging part which prevents that .

The invention according to claim 2, having in the packaging box according to claim 1, in at least one of said first side plate and the third side plate, a window appearing by cutting along the cutting line, it It is characterized by.
According to a third aspect of the present invention, in the packaging box according to the first aspect, at least one of the first side plate to the first top flap and the third side plate to the third top flap has a cutting line. It has the window part which appears by cut | disconnecting along, It is characterized by the above-mentioned.
According to a fourth aspect of the present invention, in the packaging box according to any one of the first to third aspects, the first side plate and the third side plate of the first side plate and the third side plate have a lateral dimension of the first side plate and the third side plate. In the case where the vertical dimension is larger, a bent portion extending from the first side plate toward the third side plate is provided in the vicinity of the middle of the second leg portion and the fourth leg portion in the height direction. It is characterized by.

According to the first aspect of the present invention, the load from above is supported by the second pedestal supported by the second leg and the fourth pedestal supported by the fourth leg, and one end thereof is supported. The bridge in which the edge abuts against the inner side surface of the second side plate and the other end abuts against the inner side surface of the fourth side plate can support a load in a direction that causes the second side plate and the fourth side plate to fall inward. it can. That is, compared with the prior art, it is possible to make the structure more robust against the load both at the time of display and distribution.
Moreover, the structure can be simplified by comprising a bridge part with the 1st bridge integral with the 1st ceiling flap, and the 3rd bridge integral with the 3rd ceiling flap. Further, it is possible to support the load from above by the bridge portion.
In addition, by engaging one end of the first bridge and the third bridge from above the second slit, one end of the first bridge and the third bridge can be easily brought into contact with the inner surface of the first side plate. In addition, the other end of the first bridge and the third bridge can be easily engaged with the other end of the first bridge and the third bridge by engaging the other end of the first bridge and the third bridge from above the fourth slit. It can contact | abut to the inner surface of a side plate.
Further, the second engaging portion is engaged so as to intersect with the second leg portion to regulate the position of the second leg portion, and the fourth engaging portion is engaged so as to intersect with the fourth leg portion. Then, by regulating the position of the fourth leg portion, it is possible to support a load in a direction that causes the second leg portion and the fourth leg portion to fall inward and outward. Furthermore, the load of the direction which makes the 2nd side plate and the 4th side plate fall down outside can be supported via a 2nd base and a 4th base.

According to the invention of claim 2, the stored items stored in the packaging box can be seen from the outside from the first side plate and the third side plate side through the windows of the first side plate and the third side plate. Can do.
According to the invention of claim 3, the stored items stored in the packaging box are externally provided through the window portion extending from the first side plate to the first ceiling flap and the window portion extending from the third side plate to the third ceiling flap. Can be seen from.
According to the invention of claim 4, the second leg part and the fourth leg part are folded at the bent part in the vicinity of the middle in the height direction, thereby packaging the second leg part and the fourth leg part during assembly. It can be inserted inside the box.

It is the perspective view which looked at the packaging box 1 at the time of distribution (before removing the cutting part M) from the front left diagonal upper direction. It is the perspective view which looked at the packaging box 1 at the time of storage thing display (after removing the cutting part M) from the front left diagonal upper direction. FIG. 3 is a view taken along line XX in FIG. 2. 2 is a development view of the packaging box 1. FIG. It is an expanded view of the packaging box 1A. It is the perspective view which looked at the packaging box 1B at the time of storage thing display (after removing the cutting part M) from the front left diagonal upper direction. It is an enlarged view of the right end side in the YY line arrow figure in FIG. It is an expanded view of the packaging box 1B. It is the perspective view which looked at the packaging box 1C at the time of distribution (before removing the cutting part M) from the front left diagonal upper direction. It is the perspective view which looked at the packaging box 1C at the time of storage thing display (after removing the cutting part M) from the front left diagonal upper direction. It is an expanded view of the packaging box 1C. It is the perspective view which looked at packaging box 1D at the time of physical distribution (before removing excision part M) from the front left diagonal upper part. It is the perspective view which looked at the packaging box 1D at the time of storage thing display (after removing the cutting part M) from the front left diagonal upper direction. It is an expanded view of packaging box 1D. It is the perspective view which looked at the packaging box 1E at the time of storage thing display (after removing the cutting part M) from the front left diagonal upper direction. It is an expanded view of the packaging box 1E. It is the perspective view which looked at the packaging box 1F at the time of storage thing display (after removing the cutting part M) from the front left diagonal upper direction. It is an expanded view of the packaging box 1F. It is a figure explaining the state which stacked the packaging box. It is the perspective view which looked at the packaging box 1G at the time of storage thing display (after removing the cutting part M) from the front left diagonal upper direction. It is an expanded view of the packaging box 1G. It is the perspective view which looked at the packaging box 1H at the time of storage thing display (after removing the cutting part M) from the front left diagonal upper direction. It is an expanded view of the packaging box 1H. It is the perspective view which looked at the packaging box 1M from the front right diagonal upper direction.

Hereinafter, embodiments to which the present invention is applied will be described in detail with reference to the drawings. In addition, in each drawing, the member etc. which attached | subjected the same code | symbol are the things of the same or similar structure, The duplication description about these shall be abbreviate | omitted suitably. Moreover, in each drawing, members and the like that are not necessary for the description are omitted as appropriate.
<Embodiment 1>

  With reference to FIGS. 1-5, the packaging box 1 which concerns on Embodiment 1 to which this invention is applied is demonstrated. In the following description, for convenience of explanation, description will be made assuming that the up, down, front, back, left, and right directions indicated by arrows in FIG. Further, the thickness of a corrugated board or the like that is a material of the packaging box 1 is omitted as appropriate.

  FIG. 1 is a perspective view of the packaging box 1 at the time of distribution (before removing the cut portion M) as seen from diagonally upward on the front left side. With reference to the figure, the structure seen from the outside among the structures of the packaging box 1 is demonstrated.

  The packaging box 1 is, for example, a sheet of a shape as shown in the developed view of FIG. 4 punched out from a corrugated board (corrugated cardboard paper) by a punching die at a predetermined folding curve described later, As a whole, it is formed in a rectangular parallelepiped shape by adhering with an adhesive tape or hot melt. As a material of the packaging box 1, a thick cardboard board, a synthetic paper board, a synthetic resin board, or the like can be employed in addition to the corrugated board.

  The rectangular parallelepiped packaging box 1 includes a side plate portion 10 including four side plates, a bottom plate 20, and a top plate 30. The bottom plate 20 is formed in a rectangular shape, and has four folding lines (ridge lines) corresponding to the four sides, that is, a folding line L5 corresponding to the first side (front side) and a second side (right side). A folding line L6 corresponding to the third side (back side) and a folding line L8 corresponding to the fourth side (left side) are included. Among these folding lines L5 to L8, the folding line L5 and the folding line L7 are opposed to each other, and the folding line L6 and the folding line L8 are opposed to each other.

  The four side plates are provided with a front side plate 11 as a first side plate standing at a folding line L5, a right side plate 12 as a second side plate standing at a folding line L6, and a rear side plate as a third side plate at a folding line L7. 13 is erected, and a left side plate 14 as a fourth side plate is erected on the folding line L8.

  The top plate 30 includes a front top flap 31 as a first top flap that is bent inward (rearward) along a folding line L9 at the upper end edge of the front side plate 11, and a folding line L14 at the upper end edge of the rear side plate 13. The rear ceiling flap 33 is bent toward the front, and includes a bridge portion 39 (see FIG. 2) including a front bridge 32 and a rear bridge 34 described later.

  As shown in FIG. 1, the packaging box 1 has a cutout portion M surrounded by a cutting line S <b> 1 that is partially cut and connected to the rest from the front plate 11 to the front flap 31. It is provided. The cutting line S1 is composed of four cutting lines a, b, c, and d. That is, the cutting line S1 extends in the vicinity of the lower portion of the front side plate 11 to the left and right, and extends upward from the right end of the cutting line a, intersects the folding line L9, further extends rearward, and extends to the front flap 31. A cutting line b that stops before the rear end, and a cutting line d that is parallel to the cutting line b, that is, extends upward from the left end of the cutting line a, intersects the folding line L9, and further extends backward, It is constituted by a cutting line d that stops before the rear end of the front ceiling flap 31, and a cutting line c that connects the rear ends of these cutting lines b and d.

  In addition, a cut portion M similar to the cut portion M is formed from the rear side plate 13 to the back flap 33 so as to be surrounded by a cutting line S3. When these cut portions M are cut and removed along the cutting lines S1 and S3, window portions W1 and W3 appear as shown in FIG. Through these windows W1 and W3, it is possible to display (display) the stored items (not shown) stored in the packaging box 1 so as to be visible from the outside (see FIG. Part W2).

  FIG. 2 is a perspective view of the packaging box 1 when the stored item is displayed (after the cut portion M is removed) as seen from the upper left obliquely upper side. FIG. 3 is a view taken along line XX in FIG. However, illustration of the window W3 is omitted. FIG. 4 is a development view of the packaging box 1.

With reference to FIGS. 2-4, the reinforcement structure of the packaging box 1 is demonstrated. Note that the folding lines L1 to L18 shown in FIG. 4 are all mountain fold lines that bend at an angle of 90 degrees.
As shown in FIG. 4, in the unfolded state, the packaging box 1 has four side plates constituting the side plate portion 10, that is, the front side plate 11, the right side plate 12, the rear side plate 13, and the left side plate 14 connected in series. Yes. That is, the front side plate 11, the right side plate 12, the rear side plate 13 and the left side plate 14 are connected in this order via folding lines L 1, L 2 and L 3, and further, the front side plate 11 has a folding line L 4. The trunk pasting part 11a is provided continuously through the gap.

  Rectangular bottom flaps 21, 22, 23, and 24 are connected to lower end edges of the front side plate 11, the right side plate 12, the rear side plate 13, and the left side plate 14 in this order via folding lines L5, L6, L7, and L8. Has been. These bottom flaps 21 to 24 are overlapped as described later to form the bottom plate 20. In the bottom flaps 22 and 24, slits 22a and 24a are formed along the folding lines L6 and L8 on the side close to the folding lines L6 and L8. These slits 22a and 24a are for inserting insertion tabs 42a and 52a of a right leg portion 42 and a left leg portion 52 which will be described later. Finger pressing portion forming cuts 12a and 14a are provided on the right side plate 12 and the left side plate 14, respectively, in the horizontal center in FIG. 4 and above the vertical center.

  A front sky flap 31 as a first top flap is connected to the upper edge of the front side plate 11 via a folding line L9. The front top flap 31 is connected to the front ceiling flap 31 as a first bridge via a folding line L10. A front bridge 32 is continuously provided. The front bridge 32 is formed in a strip shape extending long along the folding line L10, and includes a right end (one end) 32c, a right end (one end) 32a, a left end (the other end) 32d, It has a left edge (the other edge) 32b. The front bridge 32 and a rear bridge 34 described later constitute a bridge portion 39.

  A right reinforcing portion 40 as a second reinforcing portion is connected to the upper end edge of the right side plate 12 via a folding line L11. The right reinforcing portion 40 is connected to the upper end edge of the right side plate 12 via a folding line L11 and a right receiving base 41 as a second receiving base, and is connected to the right receiving base 41 via a folding line L12. The right leg portion 42 as the second leg portion, and the right base 43 connected to the right leg portion 42 via the folding line L13. In the right reinforcing part 40, as shown in FIG. 4, a second slit that extends upward from the folding line L11 and crosses the right cradle 41 and enters the right leg part 42 at the center in the left-right direction of the right cradle 41. The right slit 40a is formed.

  The right slit 40a penetrates the corrugated cardboard as the material of the packaging box 1 in the front and back direction. In the right slit 40a, one end portions 32c and 34c of the front bridge 32 and the rear bridge 34 described later are inserted in the assembled packaging box 1. An insertion tab 42a is provided on the folding line L13 in the right leg portion 42. The insertion tab 42a is formed so that three sides that are not on the folding line L13 are cut and project from the folding line L13 when the right base 43 is bent at the folding line L13.

  A rear ceiling flap 33 as a third ceiling flap is connected to the upper edge of the rear side plate 13 via a folding line L14. The rear ceiling flap 33 is connected to the rear ceiling flap 33 as a third bridge via a folding line L15. A rear bridge 34 is continuously provided. The rear bridge 34 is formed in a strip shape extending long along the folding line L15, and has one end 34c, one end 34a, the other end 34d, and the other end 34b. The front bridge 32 and the rear bridge 34 described above constitute a reinforcing bridge portion 39.

  A left reinforcing portion 50 as a fourth reinforcing portion is connected to the upper end edge of the left side plate 14 via a folding line L16. The left reinforcing portion 50 is connected to the upper end edge of the left side plate 14 via a folding line L16 and a left receiving base 51 as a fourth receiving base, and is connected to the left receiving base 51 via a folding line L17. The left leg portion 52 as the fourth leg portion and the left base 53 connected to the left leg portion 52 via a folding line L18. In FIG. 4, the left reinforcing portion 50 has a fourth slit that extends upward from the folding line L <b> 16 and crosses the left receiving portion 51 and enters the left leg portion 52 at the center in the left-right direction of the left receiving stand 51. Left slit 50a is formed.

  The left slit 50a penetrates a corrugated cardboard as a material of the packaging box 1 in the front and back direction. The other end portions 32d and 34d of the front bridge 32 and the rear bridge 34 are inserted into the left slit 50a in the packaging box 1 after assembly. An insertion tab 52a is provided on the folding line L18 in the left leg 52. The insertion tab 52a is formed so that three sides that are not on the folding line L18 are cut and project from the folding line L18 when the left base 53 is bent at the folding line L18.

  The packaging box 1 is assembled as follows from the unfolded state shown in FIG. As described above, the folding at the folding lines L1 to L18 is a mountain fold performed at 90 degrees. Of course, the assembly order is not limited to the following.

  First, the side plate part 10 is constituted by four side plates. That is, the front side plate 11, the right side plate 12, the rear side plate 13, and the left side plate 14 are bent along folding lines L 1, L 2, L 3, and L 4, and the body pasting portion 11 a is back on the front end of the left side plate 14 in the vertical direction. From the side, for example, adhesion (adhesion) is performed with an adhesive tape, hot melt, or the like. Thus, the front plate 11, the right plate 12, the rear plate 13, and the left plate 14 surround the four front, rear, left, and right sides to form the side plate portion 10.

  Subsequently, the bottom flaps 21, 22, 23, and 24 are bent along the folding lines L5, L6, L7, and L8. That is, the bottom flaps 22 and 24 are bent, the bottom flaps 21 and 23 are bent below these, and bonded by an adhesive tape, hot melt, or the like. The bottom plate 20 is constituted by the four bottom flaps 21 to 24.

  The right reinforcing portion 40 is bent inside the side plate portion 10.

  As described above, the right reinforcing portion 40 includes the right cradle 41, the right leg portion 42, and the right base 43. The right base 43 is bent at the fold line L13 to project the insertion tab 42a. The right leg portion 42 is bent at the folding line L12, and the right receiving base 41 is bent at the folding line L11. Thereby, the right cradle 41 becomes a substantially horizontal belt-like portion extending in the front-rear direction along the upper end edge (folding curve L11) of the right side plate 12.

  Further, the right leg portion 42 extends downward from the inner end edge (folding curve L12) of the right cradle 41 and reaches the bottom plate 20. The right base 43 is bent toward the right side plate 12 at the lower end edge (folding curve L13) of the right leg portion 42 and disposed on the bottom plate 20. The right reinforcing portion 40 is configured by inserting the insertion tab 42 a into the slit 22 a of the bottom flap 22. The right reinforcing portion 40 and the right side plate 12 constitute a room-like reinforcing structure surrounded by the upper, lower, left and right sides. This reinforcing structure has a rectangular shape that is long in the vertical direction when viewed from the front side.

  The left reinforcing part 50 is bent inside the side plate part 10.

  As described above, the left reinforcing portion 50 includes the left cradle 51, the left leg portion 52, and the left base 53. The left base 53 is bent at the folding line L18, and the insertion tab 52a is projected. The left leg 52 is bent at the folding line L17, and the left pedestal 51 is bent at the folding line L16. Thereby, the left cradle 51 becomes a substantially horizontal strip-like portion extending in the front-rear direction along the upper end edge (folding curve L16) of the left side plate 14.

  Further, the left leg portion 52 extends downward from the inner end edge (folding line L17) of the left cradle 51 and reaches the bottom plate 20. The left base 53 is bent toward the left side plate 14 at the lower end edge (folding line L18) of the left leg portion 52 and disposed on the bottom plate 20. The left reinforcing portion 50 is configured by inserting the insertion tab 52a into the slit 24a of the bottom flap 24. The left reinforcing portion 50, together with the left side plate 14, constitutes a room-like reinforcing structure surrounded by the upper, lower, left and right sides. This reinforcing structure has a rectangular shape that is long in the vertical direction when viewed from the front side.

  The front bridge 32 on the front plate 11 side connected to the front flap 31 via the folding line L10 is bent at the folding line L10, the front ceiling flap 31 is bent at the folding line L9, and the right end of the front bridge 32 A portion (one end portion) 32c is inserted into the right slit 40a of the right reinforcing portion 40 from above, and in parallel with this, the left end portion (the other end portion) 32d of the front bridge 32 is inserted into the left slit of the left reinforcing portion 50. Insert into 50a from above.

  The rear bridge 34 connected to the rear flap 33 on the rear plate 13 side via the folding line L15 is bent at the folding line L15, the rear flap 33 is bent at the folding line L14, and the right end of the rear bridge 34 Portion (one end portion) 34c is inserted into the right slit 40a of the right reinforcing portion 40 from above, and in parallel with this, the left end portion (the other end portion) 34d of the rear bridge 34 is inserted into the left slit of the left reinforcing portion 50. Insert into 50a from above.

  This completes the assembly of the packaging box 1.

  As shown in FIG. 3, the packaging box 1 assembled in this way has a right support 41 and a left support 51 supported by a right leg portion 42 and a left leg portion 52, respectively. Since it comprises, the load loaded with respect to the packaging box 1 from upper direction can be effectively supported by the right receiving base 41 and the left receiving base 51. FIG.

  Further, the packaging box 1 has a bridge portion 39 including a front bridge 32 and a rear bridge 34 bridged between the right reinforcing portion 40 and the left reinforcing portion 50. The right end portion 32c of the front bridge 32 and the rear bridge 34, 34c is inserted into the right slit 40a, and the right end edges 32a, 34a are in contact with the inner side surface 12b of the right side plate 12 over the entire length in the vertical direction. The left end portions 32d and 34d of the front bridge 32 and the rear bridge 34 are inserted into the left slit 50a, and the left end edges 32b and 34b are in contact with the inner side surface 14b of the left side plate 14 over the entire length in the vertical direction.

  For this reason, the force in the direction in which the right side plate 12 and the left side plate 14 are inclined inward can be effectively supported by the front bridge 32 and the rear bridge 34. Note that the right end edges 32a and 34a and the left end edges 32b and 34b do not necessarily need to be in contact with each other over the entire length, and part of them may be in contact. However, a larger force can be received as the contact length is longer.

  Here, it is said that “the right end edges 32a and 34a are in contact with the inner side surface 12b of the right side plate 12” and “the left end edges 32b and 34b are in contact with the inner side surface 14b of the left side plate 14”. “Abutting” will be described. In this “contact”, when contact is made with an appropriate force applied, when contact is made with no force applied, there is a slight gap due to the problems of die-cutting accuracy and assembly accuracy, but external force is not applied. In addition, the right side plate 12 and the left side plate 14 are slightly deformed, and this gap is eliminated.

  In addition, the front bridge 32 and the rear bridge 34 of this embodiment can be made into the shape similar to the flap used for a general lid member, without forming in a special shape. That is, when attention is paid to the shapes of the end portions 32c, 32d, 34c, and 34d of the front bridge 32 and the rear bridge 34, the present embodiment has a simple rectangular shape (rectangular shape).

  FIG. 5 shows a development view of a packaging box 1A different from the packaging box 1 described above. Unlike the structure of the bottom plate 20 of the packaging box 1 described above, the packaging box 1A shown in the figure differs from the structure of the bottom plate 20 of the packaging box 1 described above, the other side plate portion 10, the top plate 30, the right reinforcing portion 40, the left reinforcing portion 50, the bridge. The structure of the part 39 etc. is the same. Hereinafter, the description of the same configuration is omitted.

  The bottom plate 20A of the packaging box 1A first bends the bottom flap 25 at the folding line L5, then bends the bottom flaps 26 and 28 at the folding lines L6 and L8, and then the bottom flap 27 at the folding line L7. And the convex part 27a of the bottom flap 27 is inserted into the concave part 25a of the bottom flap 25. The slits 26a and 28a of the bottom flaps 26 and 28 are slits for inserting the insertion tabs 42a and 52a of the right reinforcing portion 40 and the left reinforcing portion 50.

This packaging box 1A can constitute the bottom plate 20A by combining the four bottom flaps 25, 26, 27, and 28 as described above without using an adhesive tape or hot melt. However, the area of the cardboard required for constituting the bottom plate 20A is larger than the area of the cardboard required for constituting the bottom plate 20 of the packaging box 1 shown in FIG.
<Embodiment 2>

  With reference to FIGS. 6-8, the packaging box 1B which concerns on Embodiment 2 to which this invention is applied is demonstrated. Here, FIG. 6 is a perspective view of the packaging box 1 </ b> B when the stored item is displayed (after the cut portion M is removed) as viewed from diagonally upward on the front left side. FIG. 7 is an enlarged view of the right end side in the view taken along the line YY in FIG. FIG. 8 is a development view of the packaging box 1B.

  The packaging box 1B is different from the packaging box 1 in the configuration of the bridge portion 39B of the top plate 30B, and the other configurations are the same. Therefore, the description of the similar configuration is omitted as appropriate.

  A front bridge (first bridge) 35 constituting a part of the bridge portion 39B is connected to the front flap (first top flap) 31 via a folding line L10, and is bent at the folding line L10. Thus, the right end portion 35e is inserted into the right slit 40a from above, and the left end portion 35f is inserted into the left slit 50a from above. The front bridge 35 has convex portions 35a and 35b formed at the right end portion 35e.

  The convex portion 35a is formed in a large triangular shape and disposed on the outer side (right side), and the convex portion 35b is formed in a small triangular shape and disposed on the inner side (left side). A concave portion (second engaging portion) 35d is formed between the convex portion 35a and the convex portion 35b. Further, as shown in FIG. 7, the right end edge 35 c outside the convex portion 35 a is a2 (a2> a1) longer than the width a1 of the intermediate portion of the front bridge 35, and the inner side surface 12 b of the right side plate 12. It comes to contact with.

  The left end portion 35f of the front bridge 35 is configured in the same manner as the right end portion 35e described above. That is, convex portions 35a and 35b are formed at the left end portion 35f. The convex portion 35a is formed in a large triangular shape and disposed on the outer side (left side), and the convex portion 35b is formed in a small triangular shape and disposed on the inner side (right side). A concave portion (fourth engaging portion) 35d is formed between the convex portion 35a and the convex portion 35b. The left end edge 35c outside the convex portion 35a is a2 (a2> a1) longer than the width a1 of the intermediate portion of the front bridge 35, and comes into contact with the inner side surface 14b of the left side plate 14. Yes.

  The rear bridge 36 that constitutes a part of the bridge portion 39B is formed in the same manner as the front bridge 35 described above. That is, the rear bridge 36 is connected to the rear flap 33 via a folding line L15, and the right end 36e is inserted into the right slit 40a from above by bending at the folding line L15. 36f is inserted into the left slit 50a from above. The rear bridge 36 has convex portions 36a and 36b formed on the right end portion 36e.

  The convex portion 36a is formed in a large triangular shape and disposed on the outer side (right side), and the convex portion 36b is formed in a small triangular shape and disposed on the inner side (left side). A concave portion (second engaging portion) 36d is formed between the convex portion 36a and the convex portion 36b. Further, as shown in FIG. 7, the right end edge 36c on the outer side of the convex portion 36a is a2 (a2> a1) longer than the width a1 of the intermediate portion of the rear bridge 36, and the inner side surface 12b of the right side plate 12 is. It comes to contact with.

  The left end portion 36f of the rear bridge 36 is configured in the same manner as the right end portion 36e described above. In other words, convex portions 36a and 36b are formed at the left end portion 36f. The convex portion 36a is formed in a large triangular shape and disposed on the outer side (left side), and the convex portion 36b is formed in a small triangular shape and disposed on the inner side (right side). A concave portion (fourth engaging portion) 36d is formed between the convex portion 36a and the convex portion 36b. Further, the left end edge 36c outside the convex portion 36a is a2 (a2> a1) longer than the width a1 of the intermediate portion of the front bridge 36, and comes into contact with the inner side surface 14b of the left side plate 14. Yes.

  When the front bridge 35 and the rear bridge 36 are engaged with the right end portions 35e and 36e in the right slit 40a and the left end portions 35f and 36f are engaged with the left slit 50a, the right end edges 35c and 36c The left end edges 35c and 36c contact the side surface 12b and the inner side surface 14b of the left side plate 14. Further, the concave portions 35d and 36d of the right end portions 35e and 36e engage with the lower end 40b of the right slit 40a to regulate the position of the right leg portion 42, and the concave portions 35d and 36d of the left end portions 35f and 36f The position of the left leg part 52 is regulated by engaging with the lower end 50b of 50a.

  For this reason, in the packaging box 1B of the present embodiment, in addition to the operational effects of the packaging box 1 of the first embodiment described above, the right leg portion 42 and the left leg portion 52 are laid down inward and outward. The power can be received effectively. For this reason, the packaging box 1 </ b> B of the present embodiment can further increase the strength than the packaging box 1 of the first embodiment.

  In addition, it can also be set as the shape which abbreviate | omitted the convex parts 35b and 36b of the right end parts 35e and 36e of the front bridge 35 shown in FIG. 7, and the convex parts 35b and 36b of the left end parts 35f and 36f.

  The packaging box 1C will be described with reference to FIG. 9, FIG. 10, and FIG. Here, FIG. 9 is a perspective view of the packaging box 1 </ b> C at the time of distribution (before removing the cut portion M) as seen from diagonally upward on the front left side. FIG. 10 is a perspective view of the packaging box 1 </ b> C when the stored item is displayed (after the cut portion M is removed) as viewed obliquely from the upper left on the front side. FIG. 11 is a development view of the packaging box 1C.

  The packaging box 1C shown in these figures differs from the packaging box 1B shown in FIGS. 6 to 8 in that the position (configuration) of the window W2 (cutting part M) is changed, and other points ( The configuration is the same. Description of similar configurations is omitted as appropriate.

  The window part W2 is formed in the front side plate 11 and the rear side plate 13 in the side plate part 10C. The window portion W2 is configured by removing the cutout portion M surrounded by the cutting line S2 (cutting lines a, b, c, d). The cutting line S2 includes a cutting line a extending left and right in the vicinity of the lower portion of the front plate 11, a cutting line b extending upward from the right end of the cutting line a and intersecting the folding line L9, and a cutting parallel to the cutting line b. A line d, that is, a cutting line d that extends upward from the left end of the cutting line a and intersects the folding line L9, and a cutting line c that connects the upper ends of the cutting lines b and d. That is, the cutting line c coincides with the folding line L9. Further, a finger insertion cut 11b is formed in the cut portion M.

  For this reason, when the cut portion M is removed along the cutting line S2, the window portion W2 is formed on the front side plate 11 without being applied to the front flap 31 as shown in FIG. And the upper end of the window part W2 corresponds with the folding line L9. A window W2 similar to the window W2 formed on the front plate 11 is also formed on the rear plate 13.

  As shown in FIG. 19, the packaging box 1C having such a window portion W2 can be easily obtained by inserting a finger into the finger insertion cut 11b in a stacked state and cutting the cut portion M from the cutting line S2. By removing, the window portion W2 can be formed, and the stored item N such as a standing pouch can be displayed. Furthermore, as shown in the uppermost packaging box 1C in FIG. 19, if a perforation or the like is provided so that the top plate 30 can be easily removed, as in the uppermost packaging box 1C. The top plate 30 can also be easily removed so that the stored item N can be seen from above the packaging box 1C.

  The packaging box 1D will be described with reference to FIG. 12, FIG. 13, and FIG. Here, FIG. 12 is a perspective view of the packaging box 1D at the time of physical distribution (before removing the cut portion M) as viewed from obliquely upward on the front left side. FIG. 13 is a perspective view of the packaging box 1 </ b> D when the stored item is displayed (after the cut portion M is removed) as viewed from the upper left obliquely upper side. FIG. 14 is a development view of the packaging box 1D.

  The packaging box 1D shown in these figures differs from the packaging box 1B shown in FIGS. 6 to 8 in that the position (configuration) of the window W4 (cutting part M) is changed, and other points ( The configuration is the same. Description of similar configurations is omitted as appropriate.

  The window part W4 is formed in the front side plate 11 and the rear side plate 13 in the side plate part 10D. The window portion W4 is configured by removing the cutout portion M surrounded by the cutting line S4 (cutting lines a, b, c, d). The cutting line S4 includes a cutting line a extending left and right in the vicinity of the lower portion of the front plate 11, a cutting line b extending upward from the right end of the cutting line a and ending before the folding line L9, and parallel to the cutting line b. A cutting line d, that is, a cutting line d extending upward from the left end of the cutting line a and ending before the folding line L9, and a cutting line c connecting the upper ends of the cutting lines b and d are configured.

  That is, the cutting line c is positioned below the folding line L9, and a part 11c of the front side plate 11 is left in a band shape between the cutting line c and the folding line L9. A similar window W4 is formed on the rear side plate 13 so that a part 13c of the rear side plate 13 is left in a strip shape.

  For this reason, when the cut portion M is removed along the cutting line S4, the window W4 is formed on the front plate 11 without being applied to the front flap 31 as shown in FIG. A window portion W4 similar to the window portion W4 formed on the front side plate 11 is also formed on the rear side plate 13.

As shown in FIG. 19, the packaging box 1D having such a window portion W4 can be easily obtained by inserting a finger into the finger insertion cut 11b until the stacked state, and cutting the excision M from the cutting line S4. It can be removed to form the window portion W4, and since the portions 11c and 13c are left, the strength is stronger than the packaging box 1C described above.
<Embodiment 3>

  With reference to FIG. 15, FIG. 16, the packaging box 1E which concerns on Embodiment 3 to which this invention is applied is demonstrated. Here, FIG. 15 is a perspective view of the packaging box 1E when the stored item is displayed (after the cut portion M is removed) as viewed from diagonally upward on the front left side. FIG. 16 is a development view of the packaging box 1E.

  The packaging box 1E is characterized in that the vertical dimension H is larger than the horizontal dimension L. In this case, the length in the vertical direction of the right leg portion 44 of the right reinforcing portion 40E and the left leg portion 54 of the left reinforcing portion 50E is also H, and when the packaging box 1E is assembled, as described above, the front side plate 11 and the right side plate 12 After the side plate portion 10E that surrounds the four sides of the front, rear, left and right is constituted by the rear side plate 13 and the left side plate 14, even if the right leg portion 44 and the left leg portion 45 are folded and inserted inside these, H> L. Because there is, can not be put in.

  Therefore, in the present embodiment, the height dimension (the vertical dimension in FIG. 16) of the left leg portion 44 and the right leg portion 54 is set to H + α, and the front-rear direction (in FIG. (Left / Right direction) Folding curves L44, L54 are provided, and the right leg 44 and the left leg 54 can be bent at the folding curves L44, L54 during assembly, so that the right leg 44 and the left leg 54 can be inserted during assembly. It was.

  However, the upper half portion 44b of the right leg portion 44 above the folding line 44L is the upper half portion 44b, the lower portion is the lower half portion 44c, and the upper portion of the left leg portion 54 above the folding line 54L is the upper half portion. When the portion 54b and the lower part are the lower half portion 54c, the upper half portions 44b and 54b and the lower half portions 44c and 54c are assumed to be smaller than the left-right dimension L.

  Here, “α” of H + α is determined as follows. As shown in FIG. 15, in the assembled packaging box 1E, the folding lines L44 and L54 of the right leg portion 44 and the left leg portion 54 are in contact (contact) with the inner side surfaces of the right side plate 12 and the left side plate 14. Further, the folding lines L13 and L18 come into contact with the bottom plate so that the right base 45 and the left base 55 can ride on the bottom plate 20 and the insertion tabs 44a and 54a can be inserted into the slits 22a and 24a of the bottom flaps 22 and 24. To. In this way, α is determined.

  According to the present embodiment, the folding lines L44 and L54 come into contact with the inner side surfaces of the right side plate 12 and the left side plate 14, and therefore the load from above is applied to the right side plate 12 and the left side plate 14 via the folding lines L44 and L54. The strength can be increased.

  With reference to FIG. 17, FIG. 18, the packaging box 1F which is a modification of the above-mentioned packaging box 1E is shown.

  In the packaging box 1F, the bottom flaps 22, 24 are provided with slits 22a, 24a for inserting the insertion tabs 44a of the right leg portion 44 of the right reinforcing portion 40F and the insertion tabs 54a of the left leg portion 54F of the left reinforcing portion 50F. Are provided along the folding lines L6 and L8.

  As shown in FIG. 17, the upper half portions 44 b and 54 b positioned above the folding lines L 44 and L 54 in the right leg portion 44 and the left leg portion 54 are the inner end edges of the right pedestal 41 and the left pedestal 51. The lower half of the lower half portion that extends downward and obliquely outward from the inner side of the right side plate 12 and the left side plate 14 and is located below the folding lines L44 and L54. 44c, 54c is in contact with the inner surface of the right side plate 12 and the left side plate 14, and reaches the bottom plate 20, and the respective insertion tabs 44a, 54a are inserted into the slits 22a, 24a.

The packaging box 1F is configured such that the load applied to the right pedestal 41 and the left pedestal 51 is transferred to the right side plate 12 through the portions located below the folding lines L44 and L54 of the right leg portion 44 and the left leg portion 54. Since it can be received by the left side plate 14, a large load can be supported.
<Embodiment 4>

  With reference to FIG. 20, FIG. 21, the packaging box 1G which concerns on Embodiment 4 to which this invention is applied is demonstrated. Here, FIG. 20 is a perspective view of the packaging box 1G when the stored item is displayed (after the cut portion M is removed) as seen from the front left diagonally upward. FIG. 21 is a development view of the packaging box 1G.

  The packaging box 1G bends the upper edge of the right side plate 12 and folds it 180 degrees inward to form a right leg portion 46. The folded portion (bent portion) at this time is the right pedestal 41G. Similarly, the upper end edge of the left side plate 14 is bent and folded inward by 180 degrees to form the left leg portion 56, and the folded portion (bent portion) at this time is the left pedestal 51G.

  Further, the right end edges (one end edge) 37a, 38a of the front bridge 37G and the rear bridge 38G constituting the bridge part 39 are brought into contact with the inner side surface 46a of the right leg part 46, and the left end edge (the other end edge) 37b. , 38b are in contact with the inner side surface 56a of the left leg 56. Thereby, it is possible to prevent the right side plate 12 and the right leg portion 46 from falling inward, and to prevent the left side plate 14 and the left leg portion 56 from falling inward.

  In addition, although the shape of the both ends of the front bridge 37G and the rear bridge 38G is a triangle in the example of illustration, this can also be changed into other shapes, such as a rectangular shape.

  With reference to FIG. 22, FIG. 23, the packaging box 1H which is a modification of the packaging box 1G is demonstrated. Here, FIG. 22 is a perspective view of the packaging box 1H when the stored item is displayed (after the cut portion M is removed) as seen from the upper left diagonally upper side. FIG. 23 is a development view of the packaging box 1H.

  In the packaging box 1H, as in the packaging box 1G described above, the right pedestal 41H is formed by a folded portion (bent portion) of the upper edge of the right side plate 12, and the left pedestal 51H is folded at the upper edge of the left side plate 14 ( (Bent portion).

  The packaging box 1H is different from the packaging box 1G in the following points.

  In the packaging box 1H, a right slit 40c is formed at a position corresponding to the right ends of the front bridge 37H and the rear bridge 38H in the right cradle 41H and the right leg 46. A left slit 50c is formed at a position corresponding to the left ends of the front bridge 37H and the rear bridge 38H in the left pedestal 51H and the left leg portion 56.

  Further, the right and left edges of the front bridge 37H and the rear bridge 38H are formed with stepped portions corresponding to the thickness of the corrugated board, and the right edge is positioned on the inner side of the upper right edges 37c and 38c. Right lower edge 37d, 38d. The left end edge has left upper end edges 37e and 38e and left lower end edges 37f and 38f located on the inner side of these. The upper right edge 37c, 38c is inserted into the right slit 40c, and the upper left edge 37e, 38e is inserted into the left slit 50c.

  Thereby, the upper right edge 37c, 38c contacts the inner surface 12b of the right side plate 12, the lower right edge 37d, 38d contacts the inner surface 46a of the right leg 46, and the upper left edge 37e, 38e The left lower end edges 37f and 38f are in contact with the inner side surface 56a of the left leg portion 56. The left and right edges of the front bridge 37H and the rear bridge 38H are in contact with each other in this manner, so that the right side plate 12 and the right leg portion 46 are prevented from falling inward, and the left side plate 14 and the left leg portion 56 are inward. Prevents falling.

  The packaging box 1M shown in FIG. 24 is different from the above-described packaging boxes 1, 1A to 1H in the structure for forming the window portion, that is, the configuration for removing the cut portion M. This point will be described.

  The cut portion M is configured to be surrounded by a rectangular cutting line S2 including four cutting lines a, b, c, and d in the front side plate 11. The rear plate 13 is also provided with a cut portion M (not shown) surrounded by a similar cutting line S2. The cutting lines a are parallel to each other, and the cutting lines b and d among the strip-shaped cutting lines 10a and 10b formed so as to go around the front side plate 11, the right side plate 12, the rear side plate 13 and the left side plate 14. It is formed by the part located between.

  The cutting lines 10a and 10b are formed over the entire circumference of the side plate part 10 for manufacturing reasons, but what is necessary to remove the window part M is a part corresponding to the cutting line a. Finger insertion cuts 11d and 11e are formed at the left end and the right end of the cutting line a so as to cross the cutting lines 10a and 10b. A string or tape (not shown) is affixed between the cutting lines 10a and 10b and between the finger insertion cuts 11d and 11e on the inner surface of the front plate 11.

  Thereby, when removing the cut part M and opening the window part, the cutting line a can be easily cut by putting a finger into one or both of the finger insertion cuts 11d and 11e and pulling it forward. And the cutting lines b, d and c can be further cut to open the window.

  As shown in FIG. 19, such a packaging box 1M is piled up without cutting the cutout portion M, and then cut out the cutout portion M to provide a window portion while being piled up. It is convenient in case.

  In Embodiments 1 to 4 described above, the case where the cutting lines S1 to S4 (cutting lines a, b, c, and d) are perforations is described as an example, but the cutting lines S1 to S4 are limited to this. However, it may be a cutting line that indicates a portion to be cut by printing or the like without actually having a cutting portion. Further, when the part to be cut is clear, it is not necessary to instruct a cutting line by printing or the like.

1,1A-1H, 1M Packaging box 10, 10C-10E Side plate part 11 Front side plate (first side plate)
12 Right side plate (second side plate)
12b Inner side surface of right side plate 13 Rear side plate (third side plate)
14 Left side plate (4th side plate)
14b Inner side surface of left side plate 20, 20A Bottom plate 30, 30B Top plate 31 Front top flap (first top flap)
32, 35, 37G, 37H Front bridge (first bridge)
32a, 35c, 37a, 37c, 37d Right edge of the front bridge (one edge)
32b, 35c, 37b, 37e, 37f Left edge of the front bridge (the other edge)
32c, 35e Right end of the front bridge (one end)
32d, 35e Left end of the front bridge (the other end)
33 Acquired flap (3rd heaven flap)
34, 36, 38G, 38H Rear bridge (third bridge)
34a, 36c, 38a, 38c, 38d Rear bridge right edge (one edge)
34b, 36c, 38b, 38e, 38f Left edge of the rear bridge (the other edge)
34c, 36e The right end of the rear bridge (one end)
34d, 36e Left end of rear bridge (the other end)
35d recess (second engagement part)
36d Concave portion (second engaging portion)
39, 39B Bridge part 40, 40E, 40F Right reinforcement part (2nd reinforcement part)
40a, 40c Right slit (second slit)
41, 41G Right cradle (second cradle)
42,44 Right leg (second leg)
50, 50E, 50F Left reinforcement part (4th reinforcement part)
50a, 50c Left slit (4th slit)
51,51G Left cradle (4th cradle)
52, 54 Left leg (fourth leg)
L5 folding line (first side)
L6 Folding curve (2nd side)
L7 Folding curve (3rd side)
L8 Folding curve (4th side)
L9 Folding curve (upper edge of the first side plate)
L10 Folding curve (Inner edge of the first ceiling flap)
L11 Folding curve (upper edge of the second side plate)
L12 Folding curve (inner edge of second cradle)
L14 Folding curve (upper edge of the third side plate)
L15 Folding curve (inner edge of the third top flap)
L16 Folding curve (upper edge of the 4th side plate)
L17 Folding curve (inner edge of the 4th cradle)
N things S1-S4 cutting line

Claims (4)

Formed in a rectangular parallelepiped shape, a rectangular bottom plate, a first side plate and a third side plate respectively erected on the first side and the third side of the bottom plate that face each other, and the other side of the bottom plate A second side plate and a fourth side plate that are erected on the second side and the fourth side, respectively, a first ceiling flap that is bent inward at an upper end edge of the first side plate, and a third side plate In a packaging box provided with a top plate constituted by a third top flap bent inward at the upper edge ,
A second pedestal that is bent inward at the upper edge of the second side plate and extends along the upper edge of the second side plate; and extends downward from the inner edge of the second pedestal. A second reinforcing portion having a second leg portion extending to the bottom plate,
A fourth pedestal that is bent inward at the upper edge of the fourth side plate and extends along the upper edge of the fourth side plate; and extends downward from the inner edge of the fourth pedestal. A fourth reinforcing portion having a fourth leg portion extending to the bottom plate,
A first bridge bent downward from an inner edge of the first ceiling flap, and a first bridge bent downward from an inner edge of the third ceiling flap and overlapped with the first bridge. A bridge part constituted by three bridges,
One end of the first bridge and the third bridge is engaged from above with a second slit formed in the second cradle and the second leg, and one end edge of the first bridge and the third bridge is the second bridge. Abutting against the inner surface of the side plate, the other end is engaged from above with a fourth slit formed in the fourth pedestal and the fourth leg, and the other end is inside the fourth side plate. Abut the side,
The first bridge and the third bridge are engaged with the one end so as to intersect the second leg to regulate the position of the second leg and to the inside of the second leg. And a second engagement portion for preventing overturning to the outside, engaging the other end so as to intersect the fourth leg portion, and regulating the position of the fourth leg portion, Having a fourth engagement portion for preventing the fourth leg from falling inward and outward,
A packaging box characterized by that. At least one of the first side plate and the third side plate has a window portion that appears by cutting along a cutting line .
The packaging box according to claim 1. At least one of the first side plate to the first ceiling flap and the third side plate to the third ceiling flap has a window portion that appears by cutting along a cutting line.
The packaging box according to claim 1. In the case where the vertical dimension of the first side plate and the third side plate is larger than the horizontal dimension of the first side plate and the third side plate,
A bent portion extending from the first side plate toward the third side plate is provided near the middle in the height direction of the second leg portion and the fourth leg portion.
The packaging box according to any one of claims 1 to 3, wherein:

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