JP2006069563A - 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 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 along a folding line (c) in the diagonal direction, and a fixed piece 132 of the second end board tongue piece is folded into a valley shape along the folding line (c) in the diagonal direction. The back face side board bottom piece and the fixed piece 132 of the second end board tongue piece are stuck together, and the surface side board bottom piece and the fixed piece 112 of the first end board tongue piece are stuck together. A paste margin 15 is stuck on a first end board and when the blank folded flatly is raised into a square cylinder-like shape by one touch, a projected part 123 of the surface side board bottom piece is inserted into a notch f provided on a folding line b in the lateral direction of dividing the back face side board 14 and the back face 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 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 bent slightly. Therefore, there is a problem that the bottom lid is deformed to create a gap without opening the opening of the main body, 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 through a vertical 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, , 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. The tip edge is formed in the same direction as A side plate insertion piece is provided continuously through two folding lines, and a U-shaped notch protruding in the direction of the side plate insertion piece avoiding the second bending line in the lateral direction is provided near the side plate insertion piece of the surface side plate bottom piece. A protrusion is formed, and a part of a lateral fold line separating the back side plate and the back side plate bottom piece is provided with a structure in which a notch into which the protrusion of the surface side plate bottom piece can be inserted is provided, Fold the blank along the vertical fold line, then fold the first tab plate piece, the front side plate bottom piece, the side plate insert piece, the second side plate tongue piece, and the back side plate bottom piece respectively along the horizontal fold line, The fixed piece of the 1 tab plate tongue is valley-folded along the bend line in the oblique direction, the fixed piece of the second tab plate tongue piece is valley-folded along the bend line in the oblique direction, and the surface of the back side plate bottom piece and the second face plate Compartment shape on tongue The back surface of the fixed piece is pasted, the surface of the bottom plate on the front side and the back surface of the fixed piece formed on the first tab plate tongue piece are pasted, and the adhesive strip is pasted on the back surface of the first tab plate When the flat folded blank is raised to a square tube shape with a single touch, the protruding part of the surface side plate bottom piece is inserted into the notch provided on the horizontal fold line separating the back side plate and the back side plate bottom piece, A bottom lock type packaging box characterized in that the side plate bottom piece is fixed to the bottom of the packaging box.

  As described above, according to the first aspect of the present invention, the protrusion is inserted into the notch provided on the folding line in the lateral direction separating the back side plate and the back side plate bottom piece, and the front side plate bottom piece is fixed to the bottom of the packaging box. As a result, 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 constituting the bottom lid of the packaging box are prevented from rising inward.

  As described above, the bottom lock type packaging box of the present invention does not cause a gap in the one-touch bottom by providing the bottom plate (surface side plate bottom piece) over the entire bottom portion, and providing the protrusion on the surface side plate bottom piece and the notch in the back side plate. In addition, a 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. For this reason, a bottom part can be raised from a flat state to a square tube shape by one touch without resistance.

  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 the tip edge thereof is connected to the side plate via the second fold line (d) in the lateral direction. An insertion piece (122) is provided continuously.

  Near the side plate insertion piece (122) of the surface side plate bottom piece (121), there is a U-shaped cut (e) protruding in the direction of the side plate insertion piece (122) while avoiding the second bending line (d) in the lateral direction. A protrusion (123) is formed and provided.

  An incision (f) into which the protruding portion (123) of the front side plate bottom piece (121) can be inserted is part of a lateral fold line (b) separating the back side plate (14) and the back side plate bottom piece (141). Is provided.

  Moreover, the 1st end plate lid tongue piece (113) is connected to the upper end edge of the 1st end plate (11) via the bending line of the horizontal direction, and the upper end edge of the 2nd end plate (13) is laterally arranged. The second end plate lid tongue piece (133) is continuously provided through the folding line.

  A top plate (142) 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 (142) via a horizontal fold line. An insertion piece (143) is provided continuously.

  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 piece (111), the front side plate bottom piece (121), the side plate insert piece (122), the second tab plate tongue piece ( 131), the back side plate bottom piece (141) is folded along the lateral fold line (b), and the fixed piece (112) of the first tab plate tongue piece (111) is laid along the oblique fold line (c). Folding is performed, and the fixing piece (132) of the second tab plate tongue piece (131) is valley-folded along the bend line (c) in the oblique direction, and the surface of the back side plate bottom piece (141) and the second tab plate tongue piece (131) ) Is attached to the back surface of the fixed piece (132) that is partitioned, and the front surface of the bottom plate (121) and the back surface of the fixed piece (112) that is partitioned to the first tab plate tongue (111) are attached. Affix and paste the adhesive strip (15) on the back of the first end plate (11) When a flatly folded blank is raised into a square tube shape with a single touch, the protruding portion (123) of the front side plate bottom piece (121) is a horizontal fold line that separates the back side plate (14) and the back side plate bottom piece (141) ( b) It is inserted into the notch (f) provided on the upper surface, and the surface side plate bottom piece (121) is fixed to the bottom of the packaging box.

Therefore, the protrusion (123) is inserted into the notch (f) provided on the line of the lateral fold line (b) separating the back side plate (14) and the back side plate bottom piece (141), and the front side plate bottom piece ( 121) is fixed to the bottom of the packaging box, so that 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 constituting the bottom lid of the packaging box. (141) is prevented from rising inward and does not cause a gap 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 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. The assembly state of the bottom cover at the time of assembling into a bottom lock type packaging box is shown typically, (a) is an AA 'line section explanatory view of Drawing 2 (a projection part is inserted in a cut), (B) is BB 'sectional explanatory drawing (location without a protrusion part) of FIG. 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 122 ··· Side plate insertion piece 123 ··· Projection 131 ··· Second tab plate tongue piece 132 ··· Fixing piece 133 ··· Second face plate lid tongue piece 141 ··· Back side plate bottom piece 142 Top plate 143 Top plate insertion piece 221 Side plate 222 Side plate 223 Tug plate 224 Tug plate 225 Paste piece 226 Bottom cover piece 227 Bottom cover piece 228 Bottom cover Piece 229 ... Bottom cover piece 230 ... Fixing piece 231 ... Fixing piece a ... Vertical folding line b ... Horizontal folding line c ... Diagonal folding line d ... Second lateral folding Line e ... U-shaped cut f ... Cut

Claims (1)

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 the tip edge thereof is continuously provided with a side plate insertion piece via a second bending line in the lateral direction,
Near the side plate insertion piece of the surface side plate bottom piece, a U-shaped notch protruding in the direction of the side plate insertion piece avoiding the second bending line in the lateral direction is provided to form a protruding portion,
A part of the lateral fold line that separates the back side plate and the back side plate bottom piece has a structure in which a notch into which the protruding portion of the front side plate bottom piece can be inserted is provided.
Folding the blank along a vertical fold line, and then folding the first end plate tongue piece, the front side plate bottom piece, the side plate insertion piece, the second side plate tongue piece, the back side plate bottom piece along the lateral fold line, The fixing piece of the first tab plate tongue piece is valley-folded along an oblique folding line, the fixing piece of the second tab plate tongue piece is valley-folded along an oblique folding line, and the surface of the back side plate bottom piece and the second The back surface of the fixed piece formed on the face plate tongue piece is attached, the surface of the bottom plate on the front side and the back surface of the fixed piece formed on the first face plate tongue piece are attached, and the adhesive margin piece is the first. When a blank that is attached to the back of the end plate and folded flat is raised into a square tube with a single touch, the protrusion of the bottom plate on the front side is a cut provided on the horizontal fold line that separates the back plate and the back plate Inserted on the bottom of the packaging box. Characterized in that it is constant, the bottom locking packing box.

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