JP2006069566A - Bottom-lock type packaging box - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a bottom-lock type packaging box which does not generate a gap caused by deformation of a bottom lid piece, and can be assembled by one touch. <P>SOLUTION: A blank 10 is folded along a folding line (a) in the longitudinal direction, and then, a first end board tongue piece 111, a surface side board bottom piece 121, a second end board tongue piece 131 and a back face side board bottom piece 141 are respectively folded along a folding line b in the lateral direction. A fixed piece 123 is folded into a valley shape along a folding line (c) in the diagonal direction, and a fixed piece 143 is folded into the valley shape along the folding line (c) in the diagonal direction. The surface of the second end board tongue piece and the back face of the fixed piece 143 are stuck, and the surface of the first end board tongue piece and the back face of the fixed piece 123 are stuck. A paste margin 15 is stuck on the back face of the first end board tongue piece, and when the blank folded flatly is raised into a square cylindrical shape, a fitting notch 122 of the surface side board bottom piece and a fitting notch 142 of the back face side board bottom piece are fitted to each other and are fixed on the bottom part of the packaging box. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a bottom-locking packaging box at a one-touch bottom, and more particularly to a bottom-locking packaging box having a structure that does not cause a gap at the one-touch bottom.

  Conventionally, a bottom-lock type packaging box is known that saves space in a flat folded state during transportation and storage, and is assembled into a bottomed rectangular tube shape with one touch when used (for example, patents) Reference 1 and Patent Reference 2).

The said prior art document is shown.
Japanese Utility Model Publication No. 32-7788. Japanese Utility Model Publication No. 32-15983.

  These techniques are briefly described. For example, as shown in FIG. 4, it is a packaging box formed from corrugated cardboard, paperboard, etc., and the end plate (221, 223), the side plate (222, 224), and the glue margin piece (225) are bent in the vertical direction. Further, four bottom lid pieces (226, 227, 228, 229) constituting the bottom lid are laterally arranged at the lower end edges of the end plates (221, 223) and the side plates (222, 224). It is connected via a fold line (b) in the direction.

  Fixing pieces (230, 231) are disposed at corners of the bottom cover pieces (227, 229) via oblique bending lines (c).

  This conventional example is folded along the fold line (a), and the glue piece (225) is adhered to the back surface of the end plate (221) to form a square tube, and the bottom lid is a bottom lid piece. (226, 228) and the fixing pieces (230, 231) are fixed by a method such as gluing or stitching.

  At the time of use, the bottom portion is deformed from a rhombus to a square with a single touch from the flat state where the side plate and the end plate are joined, and is formed into a rectangular tube shape.

  When the entire box is formed into a square tube shape, the bottom cover pieces (226, 227, 228, 229) automatically form a bottom lock type bottom cover, and then the product is stored in the box and transported. Used for storage and storage.

  However, in the above conventional example, there is an advantage that it can be assembled into a packaging box only by automatically raising a folded rectangular tube-shaped sleeve, but if a force that crushes the packaging box in an oblique direction works after assembly. A gap is easily generated between the bottom cover pieces adjacent to each other, and there is a possibility that the product may fall off or be removed.

  In particular, in the case of a horizontally long packaging box, a gap is formed at the bottom of the packaging box even if the bottom cover piece is slightly bent. Therefore, there is a problem that the bottom lid can be deformed to create a gap without opening the original opening, and the contents can be extracted therefrom.

  The present invention has been made in view of the above problems relating to a bottom-lock type packaging box that can be assembled with one touch, and by locking the bottom lid piece so as not to cause a gap due to deformation of the bottom lid piece. It is an object of the present invention to provide a bottom-lock packaging box that can be assembled with a single touch.

  The invention of claim 1 of the present invention is a bottom lock type packaging box formed by assembling a single blank, and the blank includes a first face plate, a front side plate, a second side plate, a back side plate, and a paste margin piece, respectively. The first end plate, the front side plate, the second end plate, and the back side plate are connected to each other via a longitudinal fold line, and the first end plate tongue piece and the front side plate bottom piece are respectively connected to the lower end edges of the first side plate, the front side plate, the second side plate, and the rear side plate. , A second tally plate tongue piece and a back side plate bottom piece are provided in series, and a substantially keyhole-shaped fitting notch is provided in an approximately central portion of the surface side plate bottom piece inwardly from a leading edge, so that the first of the surface side plate bottom piece is provided. Near the face plate tongue piece, a substantially triangular fixing piece is defined by an oblique fold line provided from the corner toward the fitting notch, and at the substantially central portion of the back side plate bottom piece, from the tip edge A substantially keyhole-shaped fitting notch is provided on the inner side, and the back side plate bottom The second twill plate has a structure in which a substantially triangular fixing piece is partitioned by an oblique fold line provided from the corner toward the fitting notch, and the blank is arranged in the vertical direction. Bend along the fold line, then fold the first tab plate tongue piece, front side plate bottom piece, second tab plate tongue piece, and back side plate bottom piece along the horizontal fold line, respectively, and fix the fixed piece of the front side plate bottom piece diagonally. Fold it along the fold line, fold the fixed piece of the back side plate bottom piece along the oblique fold line, and paste the back surface of the fixed piece formed on the surface of the second tab plate tongue piece and the back side plate bottom piece. Attach the back surface of the fixed piece formed on the surface of the first tab plate tongue and the front side plate bottom piece, paste the adhesive strip on the back surface of the first tab plate, and touch the blank folded flat Fitting the front side plate bottom piece when raised to a square tube shape Ri-outs and rear side plate bottom piece fitting notch and are fitted to each other, the bottom of the packing box is characterized in that it is fixed, a bottom locking packing box.

  As described above, according to the first aspect of the present invention, the substantially central portion of the front side plate bottom piece is provided with the substantially keyhole-shaped fitting notch inward from the leading edge, and the front side plate bottom piece is closer to the first tapping plate tongue piece. Is formed with a substantially triangular fixing piece by an oblique bending line provided from the corner toward the fitting notch, and is substantially keyhole inward from the leading edge at the substantially central portion of the back side plate bottom piece. A substantially triangular fixing piece is defined by an oblique fold line provided from the corner toward the fitting notch near the second tab plate tongue piece of the back side plate bottom piece. Since the structure is formed, the blank is bent along the vertical folding line, and then the first tab plate tongue, the front side plate bottom piece, the second side plate tongue piece, and the back side plate bottom piece are each along the horizontal folding line. Fold the front side plate bottom piece into the diagonal direction. Folds along the bending line, folds the fixed piece on the back side plate bottom piece along the oblique fold line, and folds the back surface of the fixed piece formed on the surface of the second tab plate tongue piece and the back side plate bottom piece. Adhering, pasting the back surface of the fixed piece partitioned on the surface of the first tab plate tongue and the front side plate bottom piece, pasting the adhesive margin piece on the back surface of the first tab plate, and flatly folding the blank When raised to a square tube shape with one touch, the fitting notch on the front side plate bottom piece and the fitting notch on the back side plate bottom piece are fitted together, and the bottom of the packaging box is fixed to form the bottom lid of the packaging box The first end plate tongue piece, the front side plate bottom piece, the second end plate tongue piece, and the back side plate bottom piece are prevented from rising inward.

  According to a second aspect of the present invention, in the first aspect of the invention, the depth closer to the fixed piece than the fitting notch of the front side plate bottom piece is formed shorter than the depth closer to the adjacent second tab plate tongue piece, The bottom lock type packaging box is characterized in that the depth closer to the fixed piece than the fitting notch of the side plate bottom piece is formed shorter than the depth closer to the adjacent first end plate tongue piece.

Thus, according to the second aspect of the present invention, the depth closer to the fixed piece than the fitting notch in the front side plate bottom piece is formed shorter than the depth closer to the adjacent second tab plate tongue piece, and the fitting of the back side plate bottom piece is performed. Because the depth closer to the fixed piece than the joint notch is shorter than the depth closer to the adjacent first tab plate tongue, when assembling the flat folded blank into a square tube with one touch, assemble the bottom of the packaging box Can be done without difficulty and the bottom cover can be formed quickly.

  As described above, the bottom lock type packaging box of the present invention has a structure in which a keyhole-shaped recess is provided in the center fitting portion of the one-touch bottom so that the bottom portion once fitted is made harder and the bottom portion once fitted is difficult to come off. The deformation of the lid can be prevented, and the hollowing out action due to the deformation of the one-touch bottom can be prevented. (In the case of hollowing out, it means that the bottom part or the like is deformed without opening the original opening to create a void, and the contents etc. are extracted from the void and used illegally).

The present invention will be described in detail below based on one embodiment.
The bottom lock type packaging box of the present invention is formed by assembling a single paperboard or cardboard sheet.

  And the blank (10), for example, as shown in FIG. 1, the first face plate (11), the front side plate (12), the second face plate (13), the back side plate (14), and the glue margin piece (15) They are connected via a vertical fold line (a).

  The lower end of each of the first end plate (11), the front side plate (12), the second end plate (13), and the rear side plate (14) is provided with a first end plate tongue piece (111) via a lateral fold line (b). ), A front side plate bottom piece (121), a second end plate tongue piece (131), and a back side plate bottom piece (141).

  A first end plate lid tongue piece (112) is connected to the upper end edge of the first end plate (11) via a lateral folding line.

  A substantially keyhole-shaped fitting notch (122) is provided inward from the front edge at the substantially central portion of the surface side plate bottom piece (121).

A fold line (c) is provided obliquely from the corner toward the fitting notch (122) near the first face plate tongue piece (111) of the surface side plate bottom piece (121), and this fold line (c) Thus, a substantially triangular fixing piece (123) is partitioned.
The oblique fold line (c) is preferably formed at an angle of 45 ° inward from the corner. As a result, the bottom portion can be raised from a flat state to a square tube shape without resistance with a single touch.

  Further, the depth closer to the fixing piece (123) than the fitting notch (122) of the front side plate bottom piece (121) is formed shorter than the depth closer to the adjacent second end plate tongue piece (131), and the rear side plate bottom piece (141). ), The depth closer to the fixed piece (143) than the fitting notch (142) is shorter than the depth closer to the adjacent first tab plate tongue piece (111). Thus, when a flat folded blank is raised into a rectangular tube shape with one touch, the bottom of the packaging box can be assembled without difficulty and a bottom cover can be formed quickly.

  A second end plate lid tongue piece (132) is connected to the upper end edge of the second end plate (13) via a lateral fold line.

  A substantially keyhole-shaped fitting notch (142) is provided inward from the leading edge at a substantially central portion of the back side plate bottom piece (141).

A fold line (c) is provided in an oblique direction from the corner toward the fitting notch (142) near the second face plate tongue piece (131) of the back side plate bottom piece (141). This fold line (c) Thus, a substantially triangular fixing piece (143) is partitioned.
The oblique fold line (c) is preferably formed at an angle of 45 ° inward from the corner.

  A top plate (144) is connected to the upper end edge of the back side plate (14) via a horizontal fold line, and the top plate is connected to the tip edge of the top plate (144) via a horizontal fold line. An insertion piece (145) is provided continuously.

  The blank (10) of the bottom lock type packaging box of the present invention has the above structure. Next, the procedure for assembling this blank into a packaging box will be described.

  The blank (10) is folded along the longitudinal fold line (a). Next, the first tab plate tongue piece (111), the front surface side plate bottom piece (121), the second tab plate tongue piece (131), and the back face side plate bottom piece (141) are each folded along the lateral fold line (b).

  The fixing piece (123) of the front side plate bottom piece (121) is valley-folded along the oblique folding line (c), and the fixing piece (143) of the back side plate bottom piece (141) is turned into the oblique folding line (c). Fold it along the valley.

  The front surface of the second face plate tongue piece (131) and the back face of the fixed piece (143) partitioned on the back side plate bottom piece (141) are attached, and the surface of the first face plate tongue piece (111) and the front face side plate bottom piece (121 ) Is attached to the back surface of the first end plate (11), and the adhesive strip (15) is attached to the back surface of the first end plate (11).

In this way, the blank (10) is formed in a flat folded state.
When this flatly folded blank is raised to a square tube shape with one touch, the fitting cutout (122) of the front side plate bottom piece (121) and the fitting cutout (142) of the back side plate bottom piece (141) are fitted together. Thus, the bottom of the packaging box is fixed.

  Finally, after the contents are stored in the packaging box, the first tab plate cover tongue piece (112), the second tab plate cover tongue piece (132), and the top surface (144) are bent, and the top plate insertion piece (145) is surfaced. The sealing of the packaging box is completed on the back surface of the side plate (12).

  Accordingly, the fitting notch (122) of the front side plate bottom piece (121) and the fitting notch (142) of the back side plate bottom piece (141) are fitted to each other, and the bottom of the packaging box is fixed. The first tab plate tongue (111), the front side plate bottom piece (121), the second side plate tongue piece (131), and the back side plate bottom piece (141) constituting the bottom lid of the packaging box are prevented from rising inward. , No gap is produced in the bottom lid of the packaging box.

It is plane explanatory drawing which shows one Example of the blank of the bottom lock type packaging box of this invention. It is perspective explanatory drawing seen from the bottom surface which shows the state in the process of assembling the blank of FIG. 1 in a bottom lock type packaging box. It is the isometric view explanatory view seen from the bottom face which shows the state which assembled the blank of FIG. 1 to the bottom lock type packaging box. It is plane explanatory drawing which shows an example of the blank of the conventional bottom lock type packaging box.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Blank 11 ... 1st end plate 12 ... Front side plate 13 ... 2nd end plate 14 ... Back side plate 15 ... Paste piece 111 ... 1st end plate tongue piece 112 ... 1st end plate lid tongue piece 121 ··············································································································································· Fixing piece 144 ... Top plate 145 ... Top plate insertion piece 221 ... Side plate 222 ... Side plate 223 ... Tail plate 224 ... Tsum plate 225 ... Paste piece 226 ... Bottom lid piece 227 ... Bottom lid piece 228 ... ...... Bottom lid piece 229 ... Bottom lid piece 230 ... Fixed piece 231 ... Fixed piece a ... Vertical fold line b ... Horizontal fold line c ... Diagonal fold line

Claims (2)

A bottom-lock packaging box formed by assembling a single blank, the blank being
The first end plate, the front side plate, the second end plate, the back side plate, and the glue margin piece are connected to each other through a vertical fold line,
The lower end of each of the first face plate, the front side plate, the second side plate, and the back side plate is connected to the first end plate tongue piece, the front side plate bottom piece, the second side plate tongue piece, and the back side plate bottom piece via a lateral fold line. Established,
A substantially keyhole-shaped fitting notch is provided in an inward direction from a tip edge at a substantially central portion of the surface side plate bottom piece,
A substantially triangular fixing piece is defined by an oblique fold line provided from the corner toward the fitting notch near the first face plate tongue piece of the surface side plate bottom piece,
In the substantially central portion of the back side plate bottom piece, a substantially keyhole-shaped fitting notch is provided inward from the leading edge,
The rear side plate bottom piece has a structure in which a substantially triangular fixing piece is formed by a bend line in an oblique direction provided from a corner toward the fitting notch, near the second end plate tongue piece,
The blank is folded along a vertical fold line, and then the first tab plate tongue piece, the front side plate bottom piece, the second side plate tongue piece, and the back side plate bottom piece are folded along the horizontal fold line, respectively. The fixing piece was valley-folded along an oblique folding line, and the fixing piece of the back side plate bottom piece was valley-folded along an oblique folding line, and was partitioned into the surface of the second twill plate tongue piece and the back side plate bottom piece Stick the back of the fixed piece, stick the back of the fixed piece formed on the surface of the first tab plate tongue and the bottom plate of the front side, and paste the adhesive piece on the back of the first plate. When the blank folded into a square tube is raised with one touch, the fitting notch on the front side plate bottom piece and the fitting notch on the back side plate bottom piece fit together, and the bottom of the packaging box is fixed. Features a bottom-lock packaging box.   The depth closer to the fixed piece than the fitting notch of the front side plate bottom piece is formed shorter than the depth closer to the adjacent second tab plate tongue piece, and the depth closer to the fixed piece than the fitting notch of the rear side plate bottom piece is adjacent. The bottom-lock packaging box according to claim 1, wherein the bottom-lock packaging box is formed shorter than a depth closer to the first tapping plate tongue.

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