JP2007106491A - Box - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a box with a rear side-wall part extending upward of upper ridges of a front side-wall part and a side-wall part, wherein an insertion flap piece is easily drawn out by fingers when opening an opening part. <P>SOLUTION: In the box 10, a rear side wall part 11c extends upward of a pair of side-wall parts 11b, and an opening part is formed of an upper ridge 18 of the front side-wall part 11a, upper ridges 19 of the pair of the side-wall parts 11b, and an inner surface of the rear side-wall part 11c. Inner flaps 13 of the upper ridges 19 of the side-wall parts 11b are folded inwardly, outer flaps 15 of the upper ridges 18 of the front side-wall part 11a are allowed to overlap thereon, and an insertion flap piece 14 is inserted between the inner surface of the rear side-wall part and the inner flaps 13 and locked thereto to close the opening part 17. A finger hooking piece 22 is provided, which is derived from an insertion-folding line 20 having the insertion flap piece 14 and the outer flap 15 continuous thereto so as to unlock the locked condition of the insertion flap piece 14 and to open the opening 17. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention has a quadrangular cross-sectional shape including a front side wall portion, a rear side wall portion, and a pair of side wall portions, and the rear side wall portion extends above the upper side of the front side wall portion and the side side wall portion. Related to the box.

  For example, hexahedron-shaped boxes are often used as packaging boxes for packaging cosmetics, medicines, confectionery, stationery, and other daily necessities. When assembling the box into a hexahedron shape, after assembling a tubular body having a quadrangular cross section whose upper and lower end faces are opened by side walls surrounding the four sides, an inner flap connected to the upper and lower edges of the side wall The outer flap is bent to close the quadrangular opening.

  When assembling the box into a hexahedron shape, if a material having elasticity such as cardboard or plastic is used, each surface of the box body that is folded along the folding line to form a three-dimensional shape tends to bend. . In such a box, even if the insertion flap piece is simply inserted inside the opening portion to form the bottom surface portion or the top surface portion, the insertion flap piece easily escapes from the inside of the opening portion due to the elasticity of the material. In order to prevent the insertion flap piece from coming out, for example, a notch for locking is formed at both ends of the fold line from the outer flap of the insertion flap piece, and the base end of the inner flap is formed in this cut. A lock mechanism is provided by locking the part (see, for example, Patent Document 1).

In recent years, a box having a display function as a packaging box improved by providing a so-called signboard part by extending the rear side wall part above the upper side of the front side wall part and the side side wall part (for example, a patent Reference 2) is frequently used. Also in the box provided with the signboard portion, the quadrangular opening surrounded by the upper side of the front side wall portion, the upper side of the pair of side side wall portions, and the inner side surface of the rear side wall portion has a pair of sides. The inner flaps that are connected to the upper side of the side wall part are each folded inward, the outer flaps that are connected to the upper side of the front side wall part and have an insertion flap piece are folded to the inner flap, and the insertion flap piece is the inner side surface of the rear side wall part It is closed by inserting into the gap between the bent inner flap and the folded inner flap. In addition, a lock mechanism is provided that maintains the closed state of the opening by engaging the base end portion of the inner flap with the notches formed at both ends of the fold line connecting the insertion flap piece and the outer flap.
Japanese Utility Model Publication No. 6-42632 JP 2004-67119 A

  In a box provided with a lock mechanism that maintains the closed state of the opening, it is necessary to lock the inserted flap piece with a considerable locking force when closed, At the time of taking out, it is necessary to quickly release the locking of the insertion flap piece so that the product can be taken out smoothly. In particular, in a box in which the rear side wall portion extends above the upper side of the front side wall portion and the side side wall portion and the signboard portion is provided, the signboard portion gets in the way and the inner side surface and the inner side of the rear side wall portion are Since it is difficult to pull out the insertion flap piece with a finger from the gap between the flaps, it is necessary to devise a technique for facilitating the operation of pulling out the insertion flap piece with the finger while releasing the locking by the lock mechanism.

  In the case where the rear side wall portion extends above the upper side of the front side wall portion and the side side wall portion, the present invention provides a space between the inner side surface of the rear side wall portion and the inner flap when the opening portion is opened. It is an object of the present invention to provide a box that can easily perform an operation of pulling out an inserted flap piece with a finger from the gap.

  The present invention has a quadrangular cross-sectional shape including a front side wall portion, a rear side wall portion, and a pair of side wall portions, and the rear side wall portion extends above the upper side of the front side wall portion and the side side wall portion. In addition, a quadrangular opening surrounded by four sides is formed by the upper side of the front side wall portion, the upper side of the pair of side side wall portions, and the inner side surface of the rear side wall portion. Inner flaps that are connected to the upper side are folded inward, the outer flap that is connected to the upper side of the front side wall portion and includes the insertion flap piece is folded to the inner flap, and the insertion flap piece is bent to the inner side surface of the rear side wall portion A box formed by assembling a sheet that closes an opening by being inserted into and locked in a gap between the flaps, and is an insertion fold line connecting the insertion flap piece and the outer flap. Derived from By providing a box finger chipping opening operation portion to facilitate manipulation when opening the opening to release the bayonet lock state of the piece is provided, in which to achieve the above objects.

  According to the box of the present invention, when opening the opening in the box in which the rear side wall portion extends above the upper side of the front side wall portion and the side side wall portion, the inner side surface and the inner side surface of the rear side wall portion are opened. The operation of pulling out the inserted flap piece with the finger from the gap between the flap can be easily performed.

  As shown in FIGS. 1 (a), 1 (b) and 2, a box 10 according to a preferred embodiment of the present invention is formed by folding a plastic sheet 11 cut into a predetermined shape and assembling it into a three-dimensional shape. For example, the package is used as a packaging box for storing cosmetics, and is surrounded by four sides by a front side wall portion 12a, a pair of side side wall portions 12b, and a rear side wall portion 12c. The rectangular openings 17 on the top surface and the bottom surface of the cylindrical body are closed by a pair of inner flaps 13 to be described later and an outer flap 15 having an insertion flap piece 14 to form a hexahedral shape with a width B of 25 to 25, for example. It is formed in a vertically long rectangular parallelepiped shape having a size of 60 mm, a depth L of 20 to 60 mm, and a height H of about 80 to 180 mm.

  The box 10 of the present embodiment has a quadrangular cross-sectional shape including a front side wall portion 12a, a rear side wall portion 12c, and a pair of side side wall portions 12b, and the rear side wall portion 12c includes the front side wall portion 12a and the side walls. Extending above the upper sides 18 and 19 of the side wall portion 12b, the upper side 18 of the front side wall portion 12a, the upper side 19 of the pair of side wall portions 12b, and the inner side surface of the rear side wall portion 12c The enclosed rectangular opening 17 is formed, and the inner flaps 13 connected to the upper side 19 of the pair of side wall portions 12b are bent inward, and connected to the upper side 18 of the front side wall portion 12a. The outer flap 15 including the piece 14 is folded on the inner flap 13, and the insertion flap piece 14 is inserted into the gap between the inner side surface of the rear side wall portion 12 c and the bent inner flap 13 and locked. 7 is a box formed by assembling a plastic sheet, preferably as a sheet, which is derived from an insertion fold line 20 in which an insertion flap piece 14 and an outer flap 15 are connected to each other. A finger chip opening operation portion 16 is provided to facilitate the operation when releasing the insertion locking state and opening the opening portion 17 on the upper surface.

  Moreover, in this embodiment, as shown in FIG. 3, the finger chip opening operation unit 16 includes a first cut 21 a that intersects the insertion fold line 20, and an insertion flap piece along the direction of the insertion fold line 20. The second notch 21b provided on the 17 side is made continuous, so that it is configured to include a finger hook piece 22 formed to project from the insertion fold line 20 to the rear side wall portion 12c side.

  Furthermore, in this embodiment, a locking mechanism is provided that maintains the closure of the opening 17 by locking the proximal end portion 13a of the inner flap 13 to the locking notches 23 formed at both ends of the insertion fold line 20. It has been.

  The plastic sheet 11 for forming the box 10 of the present embodiment is made of, for example, polypropylene, polyethylene terephthalate, polyvinyl chloride, polystyrene or the like as plastic, preferably 0.3 to 0.5 mm, more preferably 0.35. It is a thin sheet material having a thickness of 0.45 mm, and even when the side edge is gripped and horizontally extended in a cantilevered form, it can be easily maintained in a smoothly curved state without bending. In addition to having a sufficient shape-retaining rigidity and elasticity, it has a degree of deformability that can be easily folded by hand force.

  Further, as shown in FIG. 2, the plastic sheet 11 is formed, for example, by punching a sheet material so as to have a shape in which the box 10 is unfolded, and bend lines 20, 25 made of, for example, half-cut lines or ruled lines. , 26, and cuts 21a, 21b, 21c, 23, etc., which are all cut lines, are provided at appropriate positions so that the work of assembling into a hexahedron shape can be easily performed. That is, for example, a vertically long rectangular side wall portion 12b is connected to both sides of a vertically long rectangular front side wall portion 12a via a vertical folding line 25. On the side, a vertically long rectangular rear side wall portion 12 c is continuously provided via a vertical folding line 25. Further, a longitudinal strip-like joining piece 24 is continuously provided on the side of the rear side wall portion 12 c via a longitudinal folding line 25. Further, the inner flaps 13 are connected to the upper and lower sides of the side wall portions 12b via the lateral folding lines 26, respectively, and the upper side of the front side wall portion 12a and the lower side of the rear side wall portion 12c. The outer flaps 15 including the insertion flap pieces 14 are connected to each other via the lateral folding line 26.

  In the present embodiment, the rear side wall portion 12c extends upward from the upper sides of the front side wall portion 12a and the side side wall portion 12b, and the upper extending portion gives decoration or other indications or displays. It functions as a signboard part 27 for making it easy to do.

  Furthermore, in this embodiment, the distance L ′ from the lateral fold line 26 of the insertion fold line 20 of the outer flap 15 is the depth L of the plastic box 10 except for both end portions where the locking cuts 23 are formed. Is provided so as to bite into the lateral fold line 26 side so as to be shorter by about 1 to 2 mm than the width of the side wall portion 12b corresponding to. As a result, when the upper and lower openings 17 are closed and locked by the inner flap 13 and the outer flap 15 (see FIGS. 1A and 1B), they are separated from the outer flap 15 by the locking cuts 23. Both end portions of the inserted flap piece 14 can smoothly enter below the base end portion 13a of the inner flap 13, respectively, and a sufficient locking width can be secured to obtain a stable locked state. become.

  Furthermore, in this embodiment, the locking cuts 23 formed at both ends of the insertion fold line 20 are provided with a length of 3 to 5 mm, for example, and extend obliquely toward the insertion fold line 20. It connects with the insertion bending line 20 provided in the side of the horizontal bending line 26 through the notch | incision part. Further, the base end portion 13a of the inner flap 13 is provided as a widened stepped portion having a length corresponding to the length of the locking cut 23, for example, having a one-step width widened from the side edge of the inner flap 13, The base end portion 13 a is locked so as to be inserted into the locking cut 23 by the elasticity of the inner flap 13 and the insertion flap piece 14, and forms a strong and stable locking mechanism together with the locking cut 23. .

  And in this embodiment, when the opening part 17 of an upper surface is obstruct | occluded by the outer flap 15, the insertion bending between the outer flaps 15 of the insertion flap piece 14 inserted along the inner surface of the back side wall part 12c is carried out. The line 20 has a pair of first cuts 21a intersecting with the insertion fold line 20 and a second provided on the side of the insertion flap piece 14 along the direction of the insertion fold line 20 at the center thereof. The notches 21b are continuously formed so as to draw a substantially U-shape (see FIG. 3). By being cut off by these cuts 21a and 21b, when the insertion flap piece 14 is bent with respect to the outer flap 15, the finger hook piece 22 that protrudes from the insertion fold line 20 toward the rear side wall portion 12c becomes the outer flap. Along the 15 surface direction, for example, a finger chip opening operation portion 16 is provided protruding from the insertion fold line 20 with a width of 5 to 20 mm and a protruding length of 0.5 to 2.0 mm. The first notch 21a is also formed by biting into the front side wall 12a from the insertion fold line 20 to a length of, for example, 1.0 to 5.0 mm, so that the finger-hook piece 22 warps up and down. Thus, it can be easily elastically deformed.

  Further, in the present embodiment, the third notch 21c extends from the central portion of the second cut 21b in a direction perpendicular to the direction along the insertion fold line 20 so that the third cut 21c is, for example, 3.0 on the insertion flap piece 14. It is provided with a length of ˜10.0 mm. Furthermore, the front end edge of the finger-hanging piece 22 is a curved portion 22a that is concavely curved toward the front side wall portion 12a. As described later, the third cut 21c and the curved portion 22a of the finger-hook piece 22 also facilitate the operation when releasing the insertion locking state of the insertion flap piece 14 and opening the opening 17 on the upper surface. It functions as the finger-missing release operation unit 16 that performs the operation.

  In order to assemble the box 10 using the plastic sheet 11 formed as described above, first, each longitudinal fold line 25 is bent by approximately 90 degrees and joined along the side edge of one side wall portion 12b. By joining the pieces 24 via an adhesive, heat sealing, or the like, a cylinder having a quadrangular section is surrounded by the front side wall part 12a, the pair of side side wall parts 12b, and the rear side wall part 12c. Form a body. Thereafter, the inner flaps 13 connected to the lower side of each side wall portion 12b at the periphery of the rectangular opening (not shown) on the bottom surface of the cylindrical body are respectively bent inward, and the rear side wall portion 12c. The outer flap 15 provided with the insertion flap piece 14 that is connected to the lower side is folded and the insertion flap piece 14 is inserted inside the opening to close the opening on the bottom surface. Further, by locking the proximal end portion 13a of the inner flap 13 to the locking cuts 23 formed at both end portions of the insertion fold line 20, the closed state is locked in a strong and stable state.

  When the bottom surface of the box 10 is closed, after storing an article such as cosmetics from the opening 17 on the top surface, the top surface is opened in the same manner as the opening on the bottom surface as shown in FIGS. The opening 17 is closed. That is, the inner flaps 13 connected to the upper side 19 of each side wall portion 12b at the periphery of the rectangular opening 17 on the upper surface of the cylindrical body are bent inward, and are connected to the upper side 18 of the front side wall portion 12a. The outer flap 15 provided with the insertion flap piece 14 is folded on the inner flap 13, and the gap between the inner side surface of the rear side wall portion 12c and the side edge of the inner flap 13 bent inward is inserted. And the opening 17 is closed. Further, by locking the proximal end portion 13a of the inner flap 13 to the locking cuts 23 formed at both end portions of the insertion fold line 20, the closed state is locked in a strong and stable state.

  On the other hand, when taking out the stored contents by opening the opening 17 on the upper surface, the rear side wall 12c, the side side wall 12b, the outer flap 15, the insertion flap piece 14 and the like are elastically deformed, A finger is inserted into the gap between the inner surface of the portion 12c and the inserted flap piece 14 inserted. Even if a finger is inserted even a little, the fingertip is smoothly locked to the finger-hanging piece 22, so that the insertion flap piece 14 and the outer flap 15 are connected with the fingertip locked in this manner. By pulling up the portion of the fold line 20, it is possible to easily pull out the insertion flap piece 14 with a finger while releasing the locking mechanism 23 by the locking cut 23 and the proximal end portion 13a of the inner flap 13. Become.

  Further, in the present embodiment, since the tip edge portion of the finger hanging piece 22 is a curved shape portion 22a, the flap piece inserted through the finger hanging piece 22 so that the belly of the finger is along the curved shape portion 22a. The operation of pulling out 14 can be performed more easily, and the finger can be more smoothly inserted into the gap between the inner surface of the rear side wall portion 12c and the insertion flap piece 14. Furthermore, since the third cut 21c is provided in the insertion flap piece 14 so as to extend from the central portion of the second cut 21b, the fingertip inserted between the inner side surface of the rear side wall portion 12c and the insertion flap piece 14 can be removed. It is possible to turn the fingertip downward of the outer flap 15 while expanding the third cut 21c while bending it toward the front side wall portion 12a, whereby the insertion flap piece 14 can be pulled out with a greater force. It becomes possible. Furthermore, the first cut 21a is formed by biting into the front side wall 12a side from the insertion fold line 20 so that the fingertip is locked to the finger-hanging piece 22 while the finger-hanging piece 22 is bent upward. The operation of pulling out the flap piece 14 can be performed more easily.

  Therefore, according to the present embodiment, the finger hooking piece 22, the curved shape portion 22 a, the third cut 21 c, and the like are provided, and thus the finger chipping opening operation portion 16 formed by deriving these from the insertion fold line 20. When the opening 17 is opened in the box 10 in which the rear side wall 12c extends above the upper sides 18 and 19 of the front side wall 12a and the side side wall 12b, the inner side of the rear side wall 12c The operation of pulling out the inserted flap piece 14 with a finger through the gap between the side surface and the inner flap 13 can be easily performed.

  FIGS. 4A to 4E illustrate other forms of the finger chipping release operation unit 16. In FIG. 4A, the front end edge is formed in a straight line without forming a curved portion 22a that is curved in a concave shape at the front end edge of the finger-hook piece 22 provided at the center portion of the insertion fold line 20. Is. FIG. 4B is a diagram in which a pair of first cuts 21a is provided only on one side, and the front edge of the finger-hook piece 22 provided in the center portion of the insertion fold line 20 is formed in a straight line. In FIG. 4C, the pair of first cuts 21a are provided only on one side, and the tip edge portion of the finger-hanging piece 22 provided at the central portion of the insertion fold line 20 is a curved portion 22a. FIG. 4D shows the finger chip opening operation portion 16 of FIG. 4B shifted from the central portion of the insertion fold line 20 to one side, and FIG. 4E shows FIG. ) Is provided by shifting the finger chip opening operation section 16 from the central portion of the insertion fold line 20 to one side. When the opening 17 is opened by the finger chip opening operation section 16 through the finger chip opening operation section 16 in the same manner as in the above embodiment, the box including the finger chip opening operation section 16 derived from the insertion fold line 20 is used. It becomes possible to easily perform the operation of pulling out the inserted flap piece 14 with a finger from the gap between the inner side surface of the rear side wall portion 12c and the inner flap 13.

  FIGS. 5A to 5D illustrate still another form of the finger chipping opening operation unit 16. These finger-missing release operation parts 16 are provided on the side of the rear side wall part 12c from the insertion fold line 20 by providing a flat convex or concavo-convex cut 28 including a part intersecting the insertion fold line 20. An overhanging finger-hanging piece 22 'is formed. When the opening 17 is opened by the finger chip opening operation section 16 through the finger chip opening operation section 16 in the same manner as in the above embodiment, the box including the finger chip opening operation section 16 derived from the insertion fold line 20 is used. It becomes possible to easily perform the operation of pulling out the inserted flap piece 14 with a finger from the gap between the inner side surface of the rear side wall portion 12c and the inner flap 13.

  FIGS. 6A and 6B illustrate still another form of the finger chipping release operation unit 16. These finger-missing release operation parts 16 are constituted by, for example, a substantially oval-shaped knob piece 30 that is separated from the insertion flap piece 14 by forming a knob piece cut 29 including a portion intersecting the insertion fold line 20. It is what is done. When the inner flap 13 is inserted into the inner side surface of the rear side wall portion 12c, the knob 30 is bent along the inner side surface of the rear side wall portion 12c, for example, by being bent upward via the insertion fold line 20. The protrusion 17 is disposed above the outer flap 15 that closes the portion 17. Further, the knob 30 is appropriately formed with a non-slip notch 31 for forming, for example, a folding protrusion for anti-slip. Even with the box having these finger chipping opening operation portions 16 derived from the insertion folding line 20, when opening the opening portion 17, the operation of pulling out the insertion flap piece 14 while grasping the knob 30 with a finger is facilitated. It becomes possible to do.

  FIG. 7 illustrates still another form of the finger chipping release operation unit 16. The finger chip opening operation portion 16 shown in FIG. 7 has a first hook 21a and a second cut 21b formed in a substantially U-shape to form a finger-hook piece 22, and the insertion fold line 20 is connected to the front side wall portion 12a. It is provided with a concave curved side, and an arcuate notch 32 is provided at the tip edge of the insertion flap piece 14. By providing the insertion fold line 20 in a concave shape, when the inner flap 13 is inserted into the inner side surface of the rear side wall portion 12c and the opening 17 is closed, the inner side surface of the rear side wall portion 12c and the outer flap 15 It becomes possible to hold a space between the front edge and make it easier to insert a finger between them.

  The present invention is not limited to the above-described embodiments, and various modifications can be made. For example, the sheet for forming the box may be a sheet made of cardboard or the like in addition to the plastic sheet. In addition, the lock mechanism for maintaining the closure of the opening is various other lock mechanisms other than the lock mechanism by locking the proximal end portion of the inner flap to the notches formed at both ends of the insertion fold line. May be. Furthermore, the box may be provided with not only a rectangle but also other quadrangular cross-sectional shapes such as a trapezoid and a square, and an opening.

(A), (b) is a principal part perspective view which shows the condition which obstruct | occludes the opening part of an upper surface part explaining the structure of the box which concerns on preferable one Embodiment of this invention. It is a top view which shows the expansion | deployment shape of the plastic sheet which forms the box which concerns on preferable one Embodiment of this invention. It is a principal part enlarged plan view explaining the structure of the finger-missing open | release operation part provided in the box which concerns on preferable one Embodiment of this invention. (A)-(e) is a principal part enlarged plan view which illustrates the other form of a finger-missing open | release operation part. (A)-(d) is a principal part enlarged plan view which illustrates further another form of a finger-missing open | release operation part. (A), (b) is a principal part enlarged plan view which illustrates further another form of a finger missing release operation part. It is a principal part enlarged plan view which illustrates further another form of a finger missing release operation part.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Box 11 Plastic sheet 12a Front side wall part 12b Side wall part 12c Rear side wall part 13 Inner flap 13a Inner flap base end part 14 Insertion flap piece 15 Outer flap 16 Finger chip | tip release operation part 17 Opening part 18 Upper side of front side wall part 19 Upper side 20 of side wall portion Insertion fold line 21a First cut 21b Second cut 21c Third cut 22 Finger hook piece 22a Curved portion 23 Locking cut 24 Joint piece 25 Vertical fold line 26 Lateral fold line 27 Signboard

Claims (6)

The front side wall portion has a quadrangular cross-sectional shape composed of a front side wall portion, a rear side wall portion, and a pair of side side wall portions, and the rear side wall portion extends upward from the upper side of the front side wall portion and the side side wall portion. A quadrangular opening surrounded by the four sides is formed by the upper side of the side portion, the upper side of the pair of side side wall portions, and the inner side surface of the rear side wall portion, and is connected to the upper sides of the pair of side side wall portions. Each inner flap is folded inward, the outer flap that is connected to the upper side of the front side wall portion and includes the insertion flap piece is folded on the inner flap, and the insertion flap piece is between the inner side surface of the rear side wall portion and the bent inner flap. A box formed by assembling a sheet that closes the opening by being inserted into the gap and locking.
A finger chip that is derived from an insertion fold line connecting the insertion flap piece and the outer flap, and releases the insertion locking state of the insertion flap piece to open the opening. A box with an opening control.   The finger-missing release operation unit causes the first cut that intersects the insertion fold line and the second cut provided on the side of the insertion flap piece along the direction of the insertion fold line to be continuous. The box according to claim 1, further comprising a finger-hanging piece formed to project from the insertion fold line toward the rear side wall.   The box according to claim 2, wherein a third notch is provided in the insertion flap piece so as to extend in a direction perpendicularly intersecting the direction along the fold line from the central portion of the second notch.   The box according to claim 2 or 3, wherein a tip edge portion of the finger-hanging piece is a curved portion that is concavely curved toward the front side wall portion.   The lock mechanism which maintains the obstruction | occlusion of the said opening part by latching the base end part of the said inner flap to the notch | incision formed in the both ends of the said insertion fold line is provided in any one of Claims 1-4. In the box.   The box according to claim 1, wherein the sheet is a plastic sheet.

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