JP2006069565A - 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 and is formed into a square cylindrical shape, and 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 in. A fixed piece 112 of the first end board tongue piece is folded into a valley shape, and a fixed piece 132 of the second end board tongue piece is folded into a valley shape. The surface of the back face side board bottom piece and the back face of the fixed piece of the second end board tongue piece are stuck, and the surface of the surface side board bottom piece and the back face of the fixed piece of the first end board tongue piece are stuck. When a paste margin 15 is stuck on the back face of the first end board tongue piece, and the blank folded flatly is raised into a square cylindrical shape, a projected piece 142 formed on the back face side board bottom piece is inserted into a notch d formed in the surface side board bottom piece, and the surface side board bottom piece is 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 pushes the packaging box in an oblique direction works after assembly, A gap is easily formed between the bottom cover pieces adjacent to each other, and there is a possibility that the contents of 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 bent slightly. Therefore, there is a problem that the bottom lid can be deformed without opening the original opening to create a gap 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. , The second end plate tongue piece and the back side plate bottom piece are arranged in series, and the first face plate tongue piece is formed near the adjacent surface side plate bottom piece, and a substantially triangular fixing piece is defined by an oblique folding line, Near the adjacent back side plate bottom piece of the second face plate tongue piece, a substantially triangular fixing piece is defined by a bend line in an oblique direction, and the depth of the front side plate bottom piece is the depth of the first face plate and the second face plate. It is formed in the same way, with a notch in the approximate center The back side plate bottom piece has a structure in which a protruding piece that can be inserted into a notch formed in the front side plate bottom piece protrudes from the edge of the back side plate bottom piece, and the blank extends along a vertical folding line. And the first tab plate tongue piece, the front side plate bottom piece, the second tab plate tongue piece, and the back side plate bottom piece are folded along the horizontal folding line, respectively, and the first tab plate tongue piece is bent obliquely. Folds along the bottom, and folds the fixed piece of the second tsum plate tongue along the diagonal fold line, and pastes the surface of the back side plate bottom piece and the back surface of the fixed piece formed on the second tap plate tongue piece. Attached to the surface of the bottom plate of the front side plate and the back surface of the fixed piece formed on the first tab plate tongue piece, pasted to the back surface of the first tab plate, paste the blank piece folded flat When raised to a square tube shape with one touch, it was formed on the back side plate bottom piece Piece is plugged into the notches are formed in the surface plate bottom piece, wherein a surface plate bottom pieces are fixed to the bottom of the packaging box, a bottom locking packing box.

  As described above, according to the first aspect of the present invention, since the projecting piece is inserted into the cut formed in the surface side plate bottom piece, and the surface side plate bottom piece is fixed to the bottom of the packaging box, the bottom cover 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 that constitute the plate are prevented from rising inward.

  The invention of claim 2 is the bottom lock type packaging box according to the invention of claim 1, wherein the protruding piece formed on the back side plate bottom piece is a protruding piece extending in the width direction. .

  Thus, according to the second aspect of the present invention, since the protruding piece formed on the back side plate bottom piece is a protruding piece extending in the width direction, when the flat folded blank is raised into a square tube shape, The protruding piece formed on the side plate bottom piece can be relatively easily inserted into the cut formed in the surface side plate bottom piece.

  As described above, the bottom lock type packaging box of the present invention is provided with the bottom plate (surface side plate bottom piece) over the entire bottom portion, the protrusion piece on the back side plate bottom piece, the cut on the surface side plate bottom piece, and the protrusion piece inserted into the cut. As a result, the bottom portion can be fixed so as not to cause a gap in the one-touch bottom, and the bottom lock type packaging box having a stronger deformation preventing structure can be obtained.

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 substantially triangular fixing piece (112) is partitioned and formed by a bend line (c) in an oblique direction near the adjacent front surface side plate bottom piece (121) of the first face plate tongue piece (111). Near the adjacent back side plate bottom piece (141) of (131), a substantially triangular fixing piece (132) is partitioned and formed by a bend line (c) in an oblique direction.

  The corner angle of the first and second face plate tongues (111) and (131) near the face plate where the fixed pieces (112, 132) are not partitioned is cut out at an angle of 45 °. Yes.

  The depth of the surface side plate bottom piece (121) is formed to be the same as the depth of the first end plate (11) and the second end plate (13), and a notch (d) is formed in a crescent shape in the width direction at substantially the center. ing.

  A protrusion piece (142) that can be inserted into a notch (d) drilled in the front surface side plate bottom piece (121) is provided at the front end edge of the back side plate bottom piece (141) so as to extend in the width direction.

  Further, a first tab plate tongue piece (113) is connected to the upper end edge of the first end plate (11) via a horizontal folding line, and the upper end edge of the second end plate (13) is bent in the horizontal direction. A second end plate lid tongue piece (133) is provided continuously through a wire.

  Further, a top plate (143) and a top plate insertion piece (144) are successively connected to the upper end edge of the back side plate (14) via a lateral folding line.

  The blank (10) of the bottom lock type packaging box of the present invention has the above structure.

  The blank (10) is bent along the longitudinal fold line (a), and then the first tab plate tongue (111), the front side plate bottom piece (121), the second end plate tongue piece (131), the back side plate bottom piece ( 141) are folded along the lateral fold line (b), the fixing piece (112) of the first tab plate tongue piece (111) is valley-folded along the fold line (c) in the oblique direction, and the second tab plate The fixing piece (132) of the tongue piece (131) is valley-folded along the bend line (c) in the oblique direction, and is fixed in a partitioned manner on the surface of the back side plate bottom piece (141) and the second end plate tongue piece (131). The back surface of the piece (132) is pasted, and the back surface of the fixed piece (112) partitioned and formed on the front surface plate bottom piece (121) and the first tab plate tongue piece (111) is pasted, and the paste margin piece (15 ) Is affixed to the back of the first twill plate (11) and folded flat When raised to a square tube shape with one touch, the protruding piece (142) formed on the back side plate bottom piece (141) is inserted into the notch (d) drilled in the surface side plate bottom piece (121), and the surface side plate bottom piece ( 121) is fixed to the bottom of the packaging box.

Accordingly, the front side plate bottom piece (121) covers the bottom of the packaging box, and the projection piece (142) is inserted into the notch (d) and the front side plate bottom piece (121) is fixed to the bottom of the packaging box. The first end plate tongue piece (111), the front side plate bottom piece (121), the second end plate tongue piece (131), and the back side plate bottom piece (141) constituting the bottom lid of the back cover are prevented from rising inward, and are packaged. There is no gap in the bottom lid of the box.

  Further, the protruding piece (142) formed at the leading edge of the back side plate bottom piece (141) is a protruding piece extending in the width direction, and the notch (d) drilled in the front side plate bottom piece is a crescent shape in the width direction. Therefore, when the blank folded flat is raised into a square tube shape, the protruding piece is inserted into the cut and the bottom can be easily locked.

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 middle 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

10 ... Blank 11 ... 1st face plate 12 ... Front side plate 13 ... 2nd face plate 14 ... Back side plate 15 ... Paste piece 111 ... 1st face plate tongue piece 112 ... Fixing piece 113 1st Tail plate lid tongue piece 121 ··· Surface side plate bottom piece 131 ··· Second tab plate tongue piece 132 ··· Fixing piece 133 ··· Second tab plate lid tongue piece 141 ··· Back side plate bottom piece 142 ··· Projection piece 143 ··· Top plate 144 ··· ··· Top plate insertion piece 221 ··· Side plate 222 ··· Side plate 223 ··· Tail plate 224 ··· Tail plate 225 · · · Paste piece 226 · · · Bottom cover piece 228 · · · Bottom cover piece 228 · · · Bottom cover piece 229 ··· Bottom cover Piece 230 ··· Fixed piece 231 ··· Fixed piece a · ····························································································

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,
Near the adjacent surface side plate bottom piece of the first tsum plate tongue piece, a substantially triangular fixing piece is partitioned and formed by a bend line in an oblique direction,
Near the adjacent back side plate bottom piece of the second end plate tongue piece, a substantially triangular fixing piece is partitioned and formed by a bend line in an oblique direction,
The depth of the surface side plate bottom piece is formed to be the same as the depth of the first face plate and the second face plate, and a notch is formed in the approximate center thereof,
The edge of the back side plate bottom piece has a structure in which a protruding piece that can be inserted into a notch formed in the surface side plate bottom piece protrudes.
The blank is folded along a longitudinal fold line, and 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 lateral fold line, respectively. The fixed piece of the piece is valley-folded along an oblique fold line, the fixed piece of the second tab plate tongue piece is valley-folded along an oblique fold line, and the surface of the back side plate bottom piece and the second piece of tab plate tongue are Adhere the back of the fixed piece that has been partitioned, stick the surface of the bottom plate on the front side and the back of the fixed piece that has been partitioned on the first tab tongue, and stick the adhesive strip to the back of the first tab Then, when the flat folded blank is raised to a square tube shape with one touch, the protruding piece formed on the back side plate bottom piece is inserted into the notch drilled in the surface side plate bottom piece, and the surface side plate bottom piece is the packaging box Bottom-lock packaging box, characterized by being fixed to the bottom of   The bottom lock type packaging box, wherein the protruding piece formed on the front edge of the back side plate bottom piece is a protruding piece extending in the width direction.

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