JP2008050049A - Locking mechanism in package - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To obtain a locking mechanism in a pulp-mold package which is difficult to disassemble and is suitable for accommodating components, locking and rigidly cartridges for a copying machine or the like, or other electric appliances, bottles, or the like in a square-shaped pulp-mold package. <P>SOLUTION: The package is made by bending a square-shaped pulp-mold plate 1 into a cylindrical form, and either one of opposite edges 2' or 2" oppositely making contact with each other has a projecting piece 3 that is overlapped on the cylindrical surface 4. In this package, the locking mechanism is constituted such that the projecting piece 3 is formed with a tapered hollow protrusion 5 that is directed toward the cylindrical surface 4, the base part of the protrusion 5 is formed with a notched groove 5' along the projecting piece 3, and a through-hole 6 into which the protrusion 5 is inserted is bored in the cylindrical surface 4, the inner periphery 6' of the through-hole 6 is formed with an engaging portion 6" that is engaged with the notched groove 5'. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a locking mechanism in a closed portion of a rectangular packaging material by a pulp mold.

  Conventionally, a rectangular packaging material using a pulp mold has been housed in a cardboard box, and the lid of the cardboard box is closed and locked with an adhesive tape or the like (for example, Patent Documents 1, 2, and 3). )

JP 2000-153879 A JP 2000-255640 A Japanese Patent Laid-Open No. 2003-175983

  An object of the present invention is to obtain a lock mechanism in a pulp mold package suitable for fixing and packaging electric parts, bottles and the like.

In order to achieve the above object, the present invention provides a packaging material in which a projecting piece superposed on a cylindrical surface is provided on one of opposing edges of a pulp mold square plate that is bent into a cylindrical shape. Forming a tapered hollow protrusion toward the cylinder surface,
A notch groove is formed in the base of the protrusion along the protruding piece, an insertion through hole for the protrusion is formed in the cylindrical surface, and a portion that engages with the notch groove is formed on the inner periphery of the through hole. A locking mechanism in the packaging material,
Secondly, the locking mechanism in the packaging material according to the first invention, wherein the hollow protrusion is a hollow conical protrusion,
Thirdly, the locking mechanism in the packaging material according to the first or second invention, wherein the engaging part is an inner periphery of the through hole,
Fourth, the locking mechanism in the packaging material according to any one of the first to third inventions, wherein an opening extending from the base of the hollow protrusion to the outer flange of the protruding piece is formed,
Consists of.

  Therefore, three fold lines are formed in the square pulp mold, and a quadrangular cylinder is formed by bending from the fold lines.

  Accommodating electrical parts and bottles in a square tube,

  At the opposite edge of the square tube

  When projecting pieces formed on one opposing edge are superposed on a rectangular cylindrical surface connected to the other opposing edge, and a tapered hollow protrusion is pushed into an insertion through hole formed in the cylindrical surface,

  A part of the inner periphery of the through hole enters a notch groove formed in the base of the protrusion, and the hollow protrusion does not come out of engagement with the through hole, and the protruding piece and the cylindrical surface are locked. .

  Since the present invention is configured as described above, an electrical component or the like is accommodated in a folded quadrangular cylinder by a pulp mold, and then inserted into an insertion through hole formed on a cylindrical surface that superimposes the protruding piece into the piece via the opposing edge. Press fit, part of the through-hole is caught in the notch groove formed in the base of the protruding piece, the protruding piece is locked to the insertion through-hole on the cylindrical surface and does not come off,

There is an effect that the electrical parts, bottles and the like in the quadrangular cylinder can be safely and reliably packaged in the pulp mold quadrangular cylinder.

  The waste paper pulp is made with a metal net mold to form a rectangular plate 1 with a pulp mold, and is bent from three folding lines 1a, 1b, 1c at equal intervals, and the four corners shown in FIG. 1 (c) and FIG. A cylindrical packaging material is formed.

  Anti-sliding protrusions for a container 7 such as a copier cartridge or bottle accommodated at each end of each of rectangular plates 4 ', 4', 4 'partitioned at equal intervals by folding lines 1a, 1b, 1c 4 ″, 4 ″, 4 ″ are formed,

  The vertical and horizontal fixing protrusions 4a and 4a of the container 7 project from the middle portions of the protrusions 4 ″, 4 ″ and 4 ″.

  In the present invention, at the opposing edges 2 ′, 2 ″ in the direction parallel to the center line c of the rectangular tube 2, a rectangular protruding piece 3 is provided on one opposing edge 2 ′, which is bent approximately 90 degrees, and the protruding piece 3 is bent. Are superposed on the opposed cylindrical surface 4, that is, on the opposed rectangular plate (FIG. 1 (c)).

  As shown in FIG. 3, the projecting piece 3 is formed with two tapered hollow projections 5 and 5 on the opposing rectangular plate (opposing cylindrical surface 4).

  The tapered hollow projections 5 and 5 have a tip spherical conical shape or a tip arc-shaped pyramid shape and form a notch groove 5 ′ in a base portion, that is, a portion 5 ″ connected to the protruding piece 3.

  Accordingly, as shown in FIGS. 1A and 1B, the container 7 is supported by the anti-sliding protrusions 4 ″ and 4 ″ and the vertical and horizontal fixing ridges 4a and 4a, and as shown in FIG. Housed in the packaging material by the square tube 2,

  When the protruding piece 3 is superposed on the cylindrical surface 4 and the tapered hollow protrusion 5 is manually pushed into the insertion through-hole 6 formed on the cylindrical surface 4, the base 5 of the protrusion 5 is shown in FIG. The engaging portion 6 "of the inner periphery 6 'of the insertion through hole 6 enters into the notch groove 5' formed in" "and is locked without being detached.

  As shown in FIG. 2 (a) and FIG. 3, the opening 3 ′ is formed by forming the opening 3 ′ from the base portion of the hollow projections 5, 5, that is, the connecting portion 5 ″ with the protruding piece 3 toward the outer flange 3 ″. The catch between the notch groove 5 ′ and the engaging portion 6 ″ between the through hole 6 can be visually confirmed.

  As shown in FIGS. 2 (a), (b), (e) and FIG. 3, the flange 3 "formed on the outer edge of the protruding piece 3 generates elasticity by pressing the cylindrical surface, and the notch groove 5 'and the through hole are formed. The engagement pressure with the 6 engagement portions 6 "is strengthened, and the lock is strengthened.

  In the present invention, in the square packaging material made of pulp mold, since the packaging material having the lock mechanism is used, it is difficult to open the packaging material, so that the distribution of inferior products such as recycled products and pirated editions can be prevented.

(A) is a side view of the packaging material of the present invention, (b) is a side view of the packaging material in a folded state, and (c) is a side view of the packaging material folded into a quadrangular cylinder. (A) The figure is a plan view of a tapered hollow protrusion, (b) The figure is a vertical side view taken along line AA in (a), (c) The figure is a plan view of the insertion through hole, (d) The figure is (c) FIG. 5B is a longitudinal sectional view taken along line BB, and FIG. 5E is a longitudinal sectional view showing a state in which a tapered hollow protrusion is inserted into the insertion through hole and the through hole is engaged with the catching groove. It is a perspective view of the packaging material which is going to wrap the cartridge of a copying machine. It is a perspective view of the state which bent and locked the packaging material shown in FIG. It is a perspective view.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Square plate by pulp mold 2 Quadrangle tube 2 ', 2 "Opposing edge 3 Protruding piece 4 Cylinder surface 5 Tapered hollow protrusion 5' Notch groove 6 Insertion through-hole 6 'Inner circumference 6" Engagement part

Claims (4)

In a packaging material in which a pulp mold square plate is bent into a cylindrical shape and provided with a projecting piece that is superposed on the cylindrical surface on one of the opposing edges that come into contact with each other,
A tapering hollow protrusion toward the cylindrical surface is formed on the protruding piece,
Forming a notch along the protruding piece at the base of the protrusion,
A locking mechanism for a packaging material, wherein an insertion through hole for the protrusion is formed in a cylindrical surface, and a portion that engages with the notch groove is formed on the inner periphery of the through hole.   The locking mechanism in the packaging material according to claim 1, wherein the hollow protrusion is a hollow conical protrusion.   The locking mechanism in the packaging material according to claim 1 or 2, wherein the engaging portion is an inner periphery of the through hole. The locking mechanism in the packaging material according to any one of claims 1 to 3, wherein an opening from the base of the hollow protrusion to the outer flange of the protruding piece is formed.

Images