JP3169007U - Packaging box - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a packaging box having improved airtightness by reducing a gap of a lid portion for closing an opening. SOLUTION: The packaging box is provided with an opening for accommodating articles on a side portion so that the opening can be closed by a lid portion, and the lid portion 41 is an edge of the bottom plate on the opening side. The first flap 51 connected to the portion, the second flaps 53 and 55 connected to the edge of the pair of side plates 22 on the opening side, respectively, and the edge of the top plate 24 on the opening side. A third flap 57 and a series are provided. Further, when the opening is closed by the lid 41, the second flap 53 is sandwiched between the third flap 57 and the first flap 51. [Selection diagram] FIG. 7

Description

  The present invention relates to a packaging box, and more particularly to a technique for reducing a gap in a lid that can close an opening.

  2. Description of the Related Art Conventionally, in a packaging box that accommodates a decoration cake or the like, a technique in which an opening is provided on a side portion and the opening is closed with a lid is known. For example, in the packaging box shown in Patent Document 1, a lid portion is constituted by left and right flaps, an upper lid portion, and a lower lid portion, and the opening portion is closed by the lid portion. However, when the opening is closed, a large gap is generated between the bent lower lid and the left and right flaps due to the restoring force of the paper.

Registered Utility Model No. 3140222

  The problem to be solved is to provide a packaging box with improved airtightness by reducing the gap between the lids that close the opening.

  The problem to be solved by the present invention is as described above. Next, means for solving the problem will be described.

  That is, in the first device, there is provided a packaging box in which an opening that can accommodate an article is provided on a side portion and the opening can be closed by a lid, and the lid is the opening of the bottom plate. A first flap that is continuous with the edge on the side, a second flap that is continuous with the edge on the opening side of the pair of side plates, and an edge on the opening side of the top plate When the opening is closed by the lid, the second flap is sandwiched between the third flap and the first flap.

  In the second device, the first flap and the third flap have a restricting means for restricting movement of the innermost one of the first flap and the third flap to the inside of the packaging box.

  In the third device, the restricting means is an auxiliary housing portion provided inside the packaging box and capable of accommodating an auxiliary article separate from the article.

  In the fourth device, at least one of the auxiliary accommodating portions is provided above the inside of the packaging box, and one of the first flap and the third flap located on the innermost side is the The first flap is configured such that the auxiliary accommodating portion comes into contact with the open end portion of the first flap.

  In the fifth device, at least one of the auxiliary accommodating portions is provided on a side portion inside the packaging box.

  In the sixth device, the innermost one of the first flap and the third flap is locked to the second flap.

  In the seventh device, the first flap and the third flap are locked.

  As effects of the present invention, the following effects can be obtained.

  In the first device, since the second flap is sandwiched between the first flap and the third flap, the gap between the openings in the peripheral portion of the boundary between the side plate and the second flap can be reduced.

  In the second device, in addition to the effects of the first device, the movement of the flaps inward can be restricted by the restricting means, thereby preventing the article from being damaged due to the contact of the lid.

  In the third device, in addition to the effect of the second device, it is economical because it is not necessary to separately provide a restricting means by using an auxiliary accommodating portion for accommodating auxiliary articles as the restricting means.

  In the fourth device, in addition to the effect of the third device, an auxiliary accommodating portion which is a restricting means is provided above the inside of the packaging box, and is further brought into contact with the open end portion of the first flap. It is possible to prevent the article from being damaged by the first flap closing the opening through which the article is put in and out and contacting the article and a part of the lid.

  In the fifth device, in addition to the effects of the third and fourth devices, an auxiliary housing portion that is a restricting means is provided on the side of the box, and the most of the auxiliary housing portion, the first flap, and the third flap. By abutting against the one located on the inner side, it is possible to prevent the article and a part of the lid from coming into contact with each other and damaging the article. Further, by providing the auxiliary accommodating portion on the side portion, the upper and lower lengths of one of the first flap and the third flap located on the innermost side are made shorter than when the auxiliary accommodating portion is provided on the upper portion of the box. Can be economical.

  In the sixth device, in addition to the effects of the first to fifth devices, the innermost flap of the lid and the second flap are engaged with each other by the restoring force of the paper. It is possible to restrict movement to the outside of the box. Therefore, the closed state of the entire lid portion can be strengthened.

  In the seventh device, in addition to the effects of the first to sixth devices, the first flap and the third flap holding the second flap are locked, so that the second flap is in a stable state. Thus, the gap around the boundary between the side plate and the second flap can be reduced.

The top view of the box expansion formation body 12 of the packaging box 11 which concerns on Example 1 of this invention. The top view which shows the state by which the 1st auxiliary | assistant mounting plate 32 was similarly folded from the box expansion | deployment formation body 12. FIG. The top view of the semi-finished state of the packaging box 11 similarly. The perspective simple figure which shows the cylindrical state in the middle of assembling the packaging box 11 similarly. The perspective simplified view which similarly shows the step which assembles the front side cover part 41. FIG. (A) The perspective simplified view which shows the state which raised the holding | grip part 25 and the 3rd flap 57 with respect to the top plate 24. FIG. (B) The perspective simplified view which shows the state which raised the front accommodation holding plate 36 with respect to the partition plate 33. FIG. The perspective simplified view which similarly shows the step which assembles the front side cover part 41. FIG. (A) The perspective simple figure which shows the state which bent the 1st flap 51 inward. (B) The perspective simplified figure which shows the state which bent the 2nd flap 53 * 55 inward and inserted the insertion piece 63 * 65 in the front cut part 61. FIG. The perspective simplified view which similarly shows the completed body of the packaging box 11. FIG. FIG. 7 is a cross-sectional view taken along the line 7-7 in FIG. The perspective simplified view which shows the completed body of the packaging box 211 which is obstruction | occlusion of the conventional cover part. The top view of the box expansion formation body 112 of the packaging box 111 which concerns on Example 2 of this invention. The top view of the semi-finished state of the packaging box 111 similarly. The perspective simple figure which shows the cylindrical state in the middle of assembling the packaging box 111 similarly. The perspective simplified view which similarly shows the step which assembles the front side cover part 141. FIG. (A) The perspective simplified view which shows the state which raised the holding | grip part 25 and the 3rd flap 157 with respect to the top plate 24. FIG. (B) The perspective simplified view which shows the state which raised the front accommodation holding plate 36 with respect to the partition plate 33. FIG. The perspective simplified view which similarly shows the step which assembles the front side cover part 141. FIG. (A) The perspective simple figure which shows the state which bent the 1st flap 151 inward. (B) The perspective simplified view which shows the state which bent the 2nd flaps 153 * 155 inward. The perspective simplified view which similarly shows the completed body of the packaging box 111. FIG.

  Next, embodiments of the invention will be described with reference to the drawings.

  A packaging box 11 according to a first embodiment of the present invention will be described with reference to FIGS.

  A packaging box 11 according to the first embodiment is formed by assembling the box development body 12 shown in FIG. 1 and is a packaging box 11 for storing cakes and the like. The packaging box 11 is formed of cardboard such as paperboard or cardboard. The packaging box 11 may be formed of a plate member using a resin material. As shown in FIG. 1, the packaging box 11 according to the present embodiment is formed in a cylindrical shape by a left side plate 22, a bottom plate 21, a right side plate 23, and a top plate 24 that are sequentially arranged, and an opening is a lid portion 41. A so-called sack-type packaging box closed by 42. The packaging box 11 is delivered to a cake shop or the like in a folded and semi-finished state (see FIG. 3), the interior space is partitioned by a partition plate 33 during assembly, and auxiliary items such as a cold insulation material are placed in the upper space. An article such as a cake is accommodated in the space, and final assembly is performed to obtain a packaging box 11 in a completed state. Below, in order to demonstrate easily, let the side in which the opening part is formed be the front-back direction. 1 to 3 is the front side, and the right side is the rear side. Further, the vertical direction is the state in which the packaging box 11 is assembled and placed with the bottom plate 21 facing down, the bottom plate 21 side is the lower side, and the left-right direction is the left-right direction when facing the front. In addition, although the planar shape of the packaging box 11 of a present Example is a rectangle, you may change into other shapes, such as a square.

  The part which comprises the packaging box 11 according to the box expansion formation body 12 shown in FIG. 1 is demonstrated. FIG. 1 shows the inner surface of the packaging box 11 as the front side of the page. First, the bottom plate 21 is a part constituting the bottom of the packaging box 11. The left side plate 22 constituting the side wall of the packaging box 11 is connected to the left end portion (lower end portion in the figure) of the bottom plate 21 via the left side plate fold line 71. The right side plate 23 constituting the side wall of the packaging box 11 is connected to the right end portion (illustrated upper end portion) of the bottom plate 21 via the right side plate fold line 72.

  Of the end portions of the right side plate 23, the top plate 24 is connected to the end portion facing the right side plate fold line 72 via the top plate fold line 73.

  A grip portion 25 having a substantially arc-shaped cut formed in parallel is formed at the center of the top plate 24 so as to form a pair of left and right. The grip part 25 forms a handle by raising upward with respect to the top plate (see FIG. 7). A sheet member 26 is attached so as to cover substantially the entire inner surface of the top plate 24. The peripheral edge of the sheet member 26 is fixed to the peripheral edge of the top plate 24 by a fixing portion 91. The sheet member 26 is made of a transparent film sheet, non-woven fabric, or the like, and is provided to close an opening formed in the top plate 24 by raising the grip portion 25 relative to the top plate 24.

Among the end portions of the top plate 24, the end portion facing the top plate fold line 73 is a first auxiliary which is a part of the auxiliary storage portion 31 (see FIG. 5 a) for storing auxiliary articles such as a cold insulation material. The mounting plate 32 is continuously provided via a first auxiliary crease line 74.
A partition plate 33 is connected to the end of the first auxiliary mounting plate 32 facing the first auxiliary crease line 74 via a second auxiliary crease line 75. The partition plate 33 is provided with a plurality of holes 35... At appropriate locations. The holes 35 are provided so that cold air can easily move downward when an auxiliary article such as a cold insulating material is accommodated in the auxiliary accommodating portion 31.

Among the end portions of the partition plate 33, a second auxiliary mounting plate 34 for fixing the auxiliary accommodating portion 31 to the upper portion of the left side plate 22 is provided at the end portion facing the second auxiliary fold line 75. 76 are provided continuously.
In addition, a front accommodation holding plate 36 is connected to the front end portion of the partition plate 33 via a fourth auxiliary fold line 77. A rear housing holding plate 37 is connected to the rear end portion of the partition plate 33 facing the fourth auxiliary fold line 77 via a fifth auxiliary fold line 78. The first auxiliary mounting plate 32 and the second auxiliary mounting plate 34 are fixed to the inner surfaces of the left side plate 22 and the right side plate 23, respectively, and the partition plate 33 is spanned between the left side plate 22 and the right side plate 23. It is a member.

  A first flap 51 constituting the front lid portion 41 is connected to the front end portion of the bottom plate 21 via a first flap fold line 81. A front notch 61 is formed at the center of the first flap 51. The shape of the front cut portion 61 is formed in a concave shape that protrudes downward in the assembled state. A first flap 52 constituting the rear lid portion 42 is connected to the rear end portion of the bottom plate 21 via a first flap fold line 82. A rear notch 62 is formed at the center of the first flap 52. The shape of the rear cut portion 62 is formed in a substantially concave shape protruding downward in the assembled state.

  A second flap 53 is connected to the front end of the left side plate 22 via a second flap crease line 83. A second flap 54 is connected to the rear end portion of the left side plate 22 via a second flap fold line 84.

  A second flap 55 is connected to the front end of the right side plate 23 via a second flap fold line 85, and a second flap 56 is provided to the rear end of the right side plate 23. The second flap fold line 86 is provided continuously.

  Each 2nd flap 53 * 54 * 55 * 56 is formed so that it may become the left-right width | variety of the substantially half of 1st flap 51 * 52 (opening part) from an upper end to the up-and-down middle part. The second flaps 53, 54, 55, and 56 gradually increase in the lateral width from the lower end of each of the flap fold lines 83, 84, 85, and 86, and the lateral width of the upper half in the upper and lower middle part It is formed to become. Further, the second flaps 53, 54, 55, and 56 are formed with insertion pieces 63, 64, 65, and 66 that project downward in a triangular shape on the free end side of the upper and lower middle portions thereof. The insertion pieces 63 and 65 are inserted into the front cutting portion 61 and are inserted into the insertion pieces 64 and 66.

  A third flap 57 is connected to the front end of the top plate 24 via a third flap crease line 87. A front insertion piece 67 to be inserted into a front cut portion 61 formed in the first flap 51 is formed at an end portion of the third flap 57 facing the third flap fold line 87. A third flap 58 is connected to the rear end portion of the top plate 24 via a third flap fold line 88. A rear insertion piece 68 to be inserted into a rear cut portion 62 formed in the first flap 52 is formed at an end portion of the third flap 58 facing the third flap fold line 88.

Next, the case where the packaging box 11 is assembled to a semi-finished state will be described. As shown in FIGS. 1 and 2, first, the first auxiliary mounting plate 32 connected to the partition plate 33 is folded at a first auxiliary fold line 74, and the second auxiliary mounting plate 34, the right side plate 23, Fold them so that they overlap.
The second auxiliary mounting plate 34 is fixed to the right side plate 23 by a fixing portion 93 which is a fixing means such as a sticking means using an adhesive or heat welding.

  Further, as shown in FIGS. 2 and 3, the bottom plate 21 connected to the left side plate 22 is folded at the right side plate fold line 72 so that the left side plate 22 overlaps the partition plate 33 and the first auxiliary mounting plate 32. Fold like so. The first auxiliary mounting plate 32 is fixed to the left side plate 22 by a fixing portion 92 which is a fixing means such as a sticking means using an adhesive or heat welding. At this time, the length between the third auxiliary crease line 76 and the top plate crease line 73 is configured to be substantially the same as the vertical length of the first auxiliary attachment plate 32.

  Thereby, as shown in FIG. 3, the packaging box 11 is in a semi-finished state folded in approximately half. In the assembly from the unfolded state to the semi-finished state, all the folds are valley folds, and the parts to be fixed are between the first auxiliary mounting plate 32 and the left side plate 22, and the second auxiliary mounting plate 34 and the right side plate. Therefore, the pasting operation can be easily automated by the pasting machine, and the manufacturing cost can be reduced. In the semi-finished state, the packaging box 11 is thin and compact, so that it can be easily transported and stored.

  Next, the case where the folded packaging box 11 in a semi-finished state is assembled to a finished body will be described.

  From the state shown in FIG. 3, when the left side plate fold line 71 and the top plate fold line 73 that have not yet been folded are valley-folded and the left side plate 22 and the right side plate 23 are raised with respect to the bottom plate 21. The packaging box 11 has a cylindrical shape having openings on the front and rear sides shown in FIG.

  When the packaging box 11 has this cylindrical shape, an auxiliary accommodating portion 31 is formed. Specifically, when the left side plate 22 and the right side plate 23 rise with respect to the bottom plate 21, the first auxiliary mounting plate 32 fixed to the left side plate 22 and the second auxiliary mounting plate 34 fixed to the right side plate 23 are: It moves together with the left side plate 22 and the right side plate 23. In the semi-finished state, the partition plate 33 that is substantially in the same plane as the first auxiliary mounting plate 32 and the second auxiliary mounting plate 34 is substantially spaced apart from the bottom plate 21 and the top plate 24 in the vertical direction. Located horizontally. And the auxiliary | assistant accommodating part 31 which has the accommodation space formed between the partition plate 33 and the top plate 24 is formed (refer FIG.5 and FIG.8).

  Next, in order to facilitate the subsequent assembly, as shown in FIG. 5a, the pair of left and right grips 25 are raised with respect to the top plate 24, and a portion to be a handle is formed. Further, the front and rear third flaps 57 and 58 are raised upward with respect to the top plate 24 so that the front and rear openings can be easily recognized.

  Next, the opening on the front side or the rear side of the cylindrical packaging box 11 is closed with the lid portions 41 and 42. First, the assembly of the front lid 41 will be described.

  Before assembling the lid portion 41, as shown in FIG. 5B, the fourth auxiliary fold line 77 is folded and the front accommodation holding plate 36 of the auxiliary accommodation portion 31 is raised with respect to the partition plate 33. Then, the front lid 41 is assembled from the state of FIG. 5b, as shown in FIG. 6a, by folding the first flap fold line 81 and bending the first flap 51 inward to open the first flap 51 open end. The opening on the front side is closed so that the portion (upper end portion) abuts on the front accommodation holding plate 36.

  Here, the front storage holding plate 36 prevents the auxiliary article in the auxiliary storage portion 31 from jumping out of the auxiliary storage portion 31 and makes contact with the first flap 51 so that the first flap 51 is a box. It plays a role as a regulation means to regulate movement inward. Further, when the lid 41 is assembled by bending the second flaps 53 and 55 and the third flap 57, the first flap 51 is restricted from moving inward of the box even if they come into contact with the first flap 51. can do.

  Next, as shown in FIG. 6 b, the second flap fold lines 83 and 85 are folded and the second flaps 53 and 55 are bent inward, and the insertion pieces 63 and 65 are inserted into the front notch 61. Then, the state in which the second flaps 53 and 55 overlap with the outer surface of the first flap 51 is maintained.

  Next, the third flap fold line 87 is valley-folded, the third flap 57 is bent downward, and the front insertion piece 67 is inserted into the front cut portion 61 in which the insertion pieces 63 and 65 are inserted. Thus, the front lid 41 is assembled. Accordingly, the front opening of the packaging box 11 is closed by the front lid 41.

  Thus, in the state where one (front) opening is closed, the auxiliary article is accommodated in the auxiliary accommodating portion 31 from the other (rear) opening. The fifth auxiliary fold line 78 is valley-folded so that the auxiliary article does not jump out of the auxiliary accommodation portion 31, and the rear accommodation holding plate 37 rises with respect to the partition plate 33. Furthermore, articles such as cakes are stored in the storage section below the auxiliary storage section 31. After the article is stored in the packaging box 11, the other (rear) opening is closed.

  The rear lid 42 is assembled in the same manner as the front lid 41 by folding the first flap fold line 82 and bending the first flap 52 inward to open the first flap 52 at the open end (upper end). Part) is in contact with the rear housing holding plate 37.

  Next, when the second flap fold lines 84 and 86 are folded and the second flaps 54 and 56 are bent inward, and the insertion pieces 64 and 66 are inserted into the rear cut portion 62, the first flap 52 The state in which the second flaps 54 and 56 overlap with the outer surface is maintained.

  Next, the third flap fold line 88 is valley-folded, the third flap 58 is bent downward, and the rear insertion piece 68 is inserted into the rear cut portion 62 after the insertion pieces 64 and 66 are inserted. Thus, the rear lid portion 42 is assembled. Therefore, the rear opening of the packaging box 11 is closed by the rear lid 42, and the packaging box 11 becomes a complete body as shown in FIG.

  Next, the state of the cover parts 41 and 42 closing the opening of the packaging box 11 will be described.

  Since the packaging box 11 is configured to be symmetrical in the front-rear direction, the front lid 41 and the surrounding state will be described, and the description of the rear lid 42 will be omitted.

  In the configuration of the conventional lid 241 shown in FIG. 9, a large gap is generated between the flap 251 corresponding to the first flap 51 in the first embodiment and the flap 253 corresponding to the second flap 53 in the first embodiment. It was. However, in the lid portion 41 according to the first embodiment of the present invention, as shown in FIGS. 7 and 8, the second flaps 53 and 55 are sandwiched between the first flap 51 and the third flap 57, and The second flaps 53 and 55 and the first flap 51 are locked by the insertion pieces 63 and 65 of the second flaps 53 and 55 being inserted into the front cut portion 61 of the first flap 51 located on the innermost side. ing.

  Since the packaging box 11 is formed by folding a blank such as paper, it tries to return to the state before the first flap 51 and the second flaps 53 and 55 are folded by the restoring force of the paper. That is, the first flap 51 tries to move so as to be in the same plane before the bottom plate 21, the second flap 53 is bent on the left side plate 22, and the third flap 55 is bent on the right side plate 23.

  However, the first flap 51 and the second flaps 53 and 55 are inserted into the front cut portion 61 that is the other of the locking means and locked by inserting the insertion pieces 63 and 65 that are one of the locking means. The state where the opening is closed at an appropriate position, that is, the folded position can be held in a stable state.

  Accordingly, as compared with the conventional packaging box 211 shown in FIG. 9, the third flap 57 and the second flap 57 around the boundary between the left side plate 22 and the right side plate 23 and the lid portion 41 of the first embodiment of the present invention shown in FIG. The gap between the flaps 53 and 55 can be further reduced.

  Further, a locking means for holding the closed positions of the opening portions of the first flap 51, the second flaps 53 and 55, and the third flap 57 (the front cut portion 61, the insertion pieces 63 and 65, the front insertion piece 67). Is provided at a substantially central portion of the lid portion 41. That is, the first flap 51, the second flaps 53 and 55, and the third flap 57 are provided in a well-balanced manner so that the gap formed between the respective flaps becomes smaller.

  The second flaps 53 and 55 are formed so as to incline toward the left and right center as they go upward from the vicinity of the bottom plate 21. The left and right widths of the second flaps 53 and 55 are formed such that they are longer as they are closer to the locking means and shorter as they are farther from the locking means. This minimizes the floating to the outside of the second flaps 53 and 55 and makes it possible to reduce the gap between the second flaps 53 and 55 and the first flap 51.

Furthermore, a part of the lid portion 41 is configured to come into contact with a member located inward of the lid portion 41.
As shown in FIG. 8, the upper end, which is the open end of the front accommodating holding plate 36 that is a part of the auxiliary accommodating portion 31, is in contact with the upper end portion of the first flap 51. In this state, the front receiving and holding plate 36 always keeps the upper end of the first flap 51 disposed on the innermost side among the members constituting the lid 41 by the restoring force of the paper to return to the state before being folded. Pressing.

  The first flap 51 transmits the pressure to the second flaps 53 and 55 that overlap the outer surface of the first flap 51 and the third flap 57 that overlaps the outer surface. Therefore, when the lid portion 41 is assembled, the innermost first flap 51 of the lid portion 41 is prevented from moving inward of the housing portion.

  Therefore, when the front accommodation holding plate 36 of the auxiliary accommodation portion 31 that is the regulating means and the first flap 51 are in contact with each other, the entire lid portion 41 is restricted from moving inward of the packaging box 11. Therefore, it is possible to prevent the article inside the packaging box 11 from being damaged by the contact of the lid portion 41. In addition, it is economical because a means for accommodating the auxiliary article is used as the restricting means without providing a separate restricting means.

  A packaging box 111 according to a second embodiment of the invention will be described with reference to FIGS. In addition, about the member (location) which is common in Example 1, the same code | symbol is attached | subjected to drawing and description is abbreviate | omitted.

  The packaging box 111 according to the second embodiment is different in the configuration of the lid portions 41 and 42 that close the front and rear openings of the packaging box 11 according to the first embodiment. This will be described in detail below.

As shown in FIG. 10, a first flap 151 constituting a front lid 141 is connected to the front end of the bottom plate 21 via a first flap fold line 81. A front notch 161 is formed at the center of the first flap 151. The front cut portion 161 is formed in a reverse concave shape that protrudes upward in the assembled state, and is formed by a straight line having a predetermined length from the left and right midway portions of the reverse concave shape.
A first flap 152 constituting the rear lid portion 142 is connected to the rear end portion of the bottom plate 21 via a first flap fold line 82. A rear notch 162 is formed at the center of the first flap 152. Like the front notch part 161, the rear notch part 162 is formed in a reverse concave shape that protrudes upward in the assembled state, and has a predetermined length downward from the left and right midway part of the reverse concave shape. It is formed with a straight line.

  A second flap 153 is connected to the front end portion of the left side plate 22 via a second flap fold line 83. A second flap 154 is connected to the rear end portion of the left side plate 22 via a second flap fold line 84.

  A second flap 155 is connected to the front end of the right side plate 23 via a second flap fold line 85, and a second flap 156 is provided to the rear end of the right side plate 23. The second flap fold line 86 is provided continuously.

  Each of the second flaps 153, 154, 155, and 156 is formed so as to be a rectangle with a left-right width that is substantially half of the first flaps 51 and 52 (opening) from the upper end to the middle in the vertical direction. The lower part of the second flap is formed in a substantially triangular shape with the left and right widths increasing from the bottom to the top.

  A third flap 157 is connected to the front end of the top plate 24 via a third flap fold line 87. A front operation piece 167 protrudes from the end of the third flap 157 facing the third flap fold line 87. In the third flap 157 in the vicinity of the front operation piece 167, a front insertion piece 67a to be inserted into the front cutout 161 formed in the first flap 151 is formed. The front insertion piece 67a is formed by making a substantially arc-shaped cut in the third flap 157 protruding toward the third flap fold line 87 side.

  A third flap 158 is connected to the rear end portion of the top plate 24 via a third flap fold line 88. A rear operation piece 168 protrudes from the end of the third flap 158 facing the third flap fold line 88. The third flap 158 in the vicinity of the rear operation piece 168 is formed with a rear insertion piece 68 a to be inserted into the rear cut portion 162 formed in the first flap 152. The rear insertion piece 68a is formed by making a substantially arc-shaped cut that protrudes toward the third flap fold line 88 side in the third flap 158.

  Next, although it is a case where the packaging box 111 is assembled to a semi-finished state, by operating similarly to Example 1, the state of the box expansion formed body 112 shown in FIG. 10 and the semi-finished state shown in FIG. To do.

  Next, the case where the folded packaging box 11 in a semi-finished state is assembled to a finished body will be described.

  From the state shown in FIG. 11, when the left side plate fold line 71 and the top plate fold line 73 that have not yet been folded are valley-folded, the left side plate 22 and the right side plate 23 are raised with respect to the bottom plate 21. The packaging box 111 has an opening at the front and rear as shown in FIG. 12, and has a cylindrical shape in which the accommodation space is partitioned and the auxiliary accommodation portion 31 is formed (see FIG. 13a).

  Next, in order to facilitate subsequent assembly, as shown in FIG. 13a, the pair of left and right grips 25 are raised with respect to the top plate 24, and a portion to be a handle is formed. Further, the front and rear third flaps 157 and 158 are raised upward with respect to the top plate 24 so that the front and rear openings can be easily recognized.

  Next, the front or rear opening of the cylindrical packaging box 111 is closed with lids 141 and 142. First, the assembly of the front lid 41 will be described.

  Prior to the assembly of the lid 141, as shown in FIG. 13 b, the fourth auxiliary fold line 77 is folded and the front accommodation holding plate 36 of the auxiliary accommodation portion 31 is raised with respect to the partition plate 33. Then, as shown in FIG. 14A, the front lid 141 is assembled from the state of FIG. 13B by valley-folding the first flap fold line 81 and bending the first flap 151 inward, and the open end of the first flap 151 The portion (upper end portion) is brought into contact with the front accommodation holding plate 36.

  Next, as shown in FIG. 14b, the second flap crease lines 83 and 85 are folded and the second flaps 153 and 155 are folded inward.

  Next, by folding the third flap fold line 87, bending the third flap 157 downward, and further inserting the front insertion piece 67a into the front cut portion 161 while holding the front operation piece 167, The front lid 141 is assembled (see FIG. 15). Therefore, the front opening of the packaging box 111 is closed by the front lid 141.

  Thus, in the state where one (front) opening is closed, the auxiliary article is accommodated in the auxiliary accommodating portion 31 from the other (rear) opening. The fifth auxiliary fold line 78 is valley-folded so that the auxiliary article does not jump out of the auxiliary accommodation portion 31, and the rear accommodation holding plate 37 rises with respect to the partition plate 33. Furthermore, articles such as cakes are stored in the storage section below the auxiliary storage section 31. After the article is stored in the packaging box 111, the other (rear) opening is closed by the rear lid 142.

  The rear lid 142 is assembled in the same manner as the front lid 141 by first folding the first flap crease line 82 and bending the first flap 152 inward, and then opening the first flap 152 at the open end (upper end). Part) is in contact with the rear housing holding plate 37.

  Next, the second flap fold lines 84 and 86 are folded and the second flaps 154 and 156 are bent inward.

  Next, by folding the third flap fold line 88, bending the third flap 158 downward, and further inserting the front insertion piece 67a into the rear cut portion 162 while holding the rear operation piece 168, The rear lid 142 is assembled. Therefore, the rear opening of the packaging box 111 is closed by the rear lid 142, and the packaging box 111 becomes a complete body as shown in FIG.

  Next, the state of the lids 141 and 142 closing the opening of the packaging box 111 will be described.

In the configuration of the conventional lid portion 241 shown in FIG. 9, a large gap is generated between the flap 251 corresponding to the first flap 151 in the second embodiment and the flap 253 corresponding to the second flap 153 in the second embodiment. It was.
However, in the lid portion 141 according to the second embodiment of the present invention, as shown in FIG. 15, the front insertion piece 67a that is a locking means is inserted into the front cut portion 161, thereby the first flap 151 and The state in which the third flap 157 is locked and the first flap 151 and the third flap 157 sandwich the second flaps 153 and 155 can be stably held.
In other words, by inserting the front insertion piece 67a, which is the other of the locking means, into the front cutting portion 161, which is one of the locking means in the second embodiment, from the lower side to the upper side, the front cutting part 161 and the front cutting part 161 The insertion piece 67a is engaged. Since the engagement direction of the front insertion piece 67a is substantially the same as the direction in which the third flap 157 is moved by the restoring force of the paper, the engagement of the locking means is not naturally released. . Accordingly, the third flap 157 can stably hold the second flaps 153 and 154 together with the first flap 151. Therefore, the gap between the third flap 57 and the second flaps 53 and 55 in the vicinity of the boundary between the left side plate 22 and the right side plate 23 and the lid portion 141 according to the second embodiment of the present invention can be further reduced.

  In both the first and second embodiments, the auxiliary housing portion 31 is provided on the upper portion of the housing portion, but the embodiment is not limited thereto. For example, a partition plate may be provided so as to span between the top plate 24 and the bottom plate 21, and auxiliary storage portions may be provided on the left side, right side, or both sides of the storage portion. At this time, like the front housing holding plate 36, if a part of the auxiliary housing portion is configured to come into contact with a member disposed on the innermost side of the lid portion, the member constituting the lid portion enters the housing portion. There is no damage to the articles in the housing.

  8 and 15, in the first and second embodiments, the first flaps 51 and 151 are provided on the innermost side of the lid portions 41 and 141, and the third flaps 57 and 157 are provided on the outermost side. It is provided but not limited. For example, the third flaps 57 and 157 may be provided on the innermost side of the lid portions 41 and 141, and the first flaps 51 and 151 may be provided on the outermost side.

  In the first and second embodiments, the restricting means is a part of the auxiliary accommodating portions 31 and 131. However, the restricting means is not limited, and a tray on which articles such as cakes are placed may be used as the restricting means. In other words, the third flap 57 in the first embodiment is arranged on the innermost side of the lid portion 41, and the open end portion (lower end portion) of the third flap 57 is formed so as to contact the tray in the storage portion. The 3 flaps 57 are prevented from entering the inside of the accommodating portion.

DESCRIPTION OF SYMBOLS 11 Packaging box 12 Box expansion formation body 21 Bottom plate 22 Left side plate 23 Right side plate 24 Top plate 25 Grip part 26 Sheet member 31 Auxiliary accommodating part 32 Auxiliary attachment plate 33 Partition plate 34 Auxiliary attachment plate 35 Hole 36 Front accommodation holding plate 37 Rear Accommodation holding plate 41 Lid 42 Lid 51 First flap 52 First flap 53 Second flap 54 Second flap 55 Second flap 56 Second flap 57 Third flap 58 Third flap 61 Front cut portion 62 Rear cut 63 insert piece 64 insert piece 65 insert piece 66 insert piece 67 front insert piece 67a front insert piece 68 rear insert piece 68a rear insert piece 71 left plate fold line 72 right plate fold line 73 top plate Fold line 74 1st auxiliary crease line 75 2nd auxiliary crease line 76 3rd auxiliary crease line 77 4th auxiliary crease line 78 5th auxiliary crease line 81 1st flap fold line 82 1st line Fold Fold Line 83 Second Flap Fold Line 84 Second Flap Fold Line 85 Second Flap Fold Line 86 Second Flap Fold Line 87 Third Flap Fold Line 88 Third Flap Fold Line 91 Fixed Part 92 Fixed Part 93 Fixed Part 111 Packaging box 112 Box unfolding body 141 Lid part 142 Lid part 151 1st flap 152 1st flap 153 2nd flap 154 2nd flap 155 2nd flap 156 2nd flap 157 3rd flap 158 3rd flap 161 Front notch Part 162 rear cut part 167 front operation piece 168 rear operation piece 211 packaging box 241 lid 251 flap 253 flap

Claims (7)

An opening that can accommodate an article is provided on the side, and the opening is a packaging box that can be closed by a lid,
The lid is
A first flap connected to an edge of the bottom plate on the opening side;
A second flap connected to each edge of the pair of side plates on the opening side;
A third flap connected to the edge of the top plate on the opening side,
When closing the opening with the lid,
The packaging box, wherein the second flap is sandwiched between the third flap and the first flap.   2. The packaging box according to claim 1, further comprising a regulating unit that regulates movement of one of the first flap and the third flap, which is located on the innermost side, to the inside of the packaging box. . The regulating means is
The packaging box according to claim 2, wherein the packaging box is an auxiliary storage portion that is provided inside the packaging box and can store auxiliary articles separate from the articles. At least one of the auxiliary accommodating portions is provided above the inside of the packaging box,
One of the first flap and the third flap located on the innermost side is the first flap,
The packaging box according to claim 3, wherein the auxiliary housing portion and the open end portion of the first flap are in contact with each other.   5. The packaging box according to claim 3, wherein at least one of the auxiliary accommodating portions is provided on a side portion inside the packaging box.   The packaging according to any one of claims 1 to 5, wherein one of the first flap and the third flap located on the innermost side and the second flap are locked. Box.   The packaging box according to any one of claims 1 to 6, wherein the first flap and the third flap are locked.

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