JP4142342B2 - plastic case - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a plastic case, and more particularly to a plastic case suitable for display and sale in a state in which small items such as cosmetics are stored.
[0002]
[Prior art and problems to be solved by the invention]
2. Description of the Related Art Conventionally, a plastic case in which a single plastic sheet is bent along a fold line is widely used as a case (box) for storing small articles. In such a plastic case, if the article is stored directly on the top surface of the bottom plate, there is a risk of damaging the article due to an impact such as dropping, so a member for holding the stuffing or holding the article Or has been done. However, in this case, the stuffing and holding member must be prepared separately from the case body, and the advantage of the plastic case is that a case can be formed simply by folding a single plastic sheet along the fold line, Features will be damaged. Further, when the bottom plate portion is flat, the outer surface of the bottom plate of the case is rubbed and damaged during display or the like, and the appearance may be impaired.
[0003]
Accordingly, an object of the present invention is to provide a plastic case that can protect a stored article from a drop impact and the like, and can also prevent damage to the outer surface of the bottom plate while maintaining its independence.
[0004]
[Means for Solving the Problems]
To achieve the above object, the plastic case of the present invention, the four sides cylindrical case body comprised of a front plate is curved outwardly and the rear plate and the pair of side plates, top and bottom of the front plate and the rear plate Each of the upper and lower sides of the case body has a curved shape that extends through an arc-shaped fold line provided in a concave shape at the opening end and has a convex end edge, and is bent along the arc-shaped fold line. Each of the pair of side plates includes a lid plate and a leg piece extending from a lower opening end of the pair of side plates, and the rear plate is formed narrower than the front plate, The arcuate bend line has a radius smaller than the arc bend line of the front plate .
[0006]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 is a development view showing one embodiment of the plastic case of the present invention, FIG. 2 is a front view of the assembled plastic case, and FIG. 3 is a perspective view of the plastic case viewed from the rear plate side. This plastic case is formed by punching a plastic sheet 1 punched into a predetermined shape and having a fold line at a predetermined position in a predetermined direction along the fold line and by adhering a glue piece. It is assembled in a box shape.
[0007]
In the plastic sheet 1, a front plate 10 and a rear plate 11, a pair of side plates 12 and 13, and an adhesive margin piece 14 are defined by folding lines 21 to 24. Further, upper lid plates 15a and 15b and lower lid plates 16a and 16b are respectively provided at both opening ends of the front plate 10 and the rear plate 11 via arcuate folding lines 25a, 25b, 26a and 26b. The inner lid plate 17 is provided on the upper opening end of each of the side plates 13 and 14 via a fold line 27. Furthermore, square leg pieces 18 projecting downward from the case are extended from the lower opening ends of the side plates 13 and 14 when the case is assembled. The arcuate fold lines 25a, 25b, 26a, and 26b have a curved shape in which the opening side is concave, and the leading edge of each cover plate has a curvature corresponding to the arcuate fold line and the tip side protrudes. It is formed in a curved shape.
[0008]
Further, the width dimension Wf, Wb of the front plate 10 and the rear plate 11 is formed such that the width dimension Wb of the rear plate 11 is slightly narrower than the width dimension Wf of the front plate 10, for example, about 1 mm. Accordingly, the radius of the arc-shaped fold lines 25b and 26b of the rear plate 11 is formed to be smaller than the radius of the arc-shaped fold lines 25a and 26a of the front plate 10, and the maximum width portion of the center portion of each lid plate The dimensions of Ws are made the same. By forming such a shape and folding the upper lid plate 15b and the lower lid plate 16b on the rear plate 11 side inward first, these lid plates can be positioned in the case, before being folded later. It is possible to improve the appearance when the lid plate is closed by preventing the upper lid plate 15a and the lower lid plate 16a on the face plate 10 side from being lifted.
[0009]
The plastic sheet 1 is formed by bending the front plate 10, the rear plate 11, the side plates 12 and 13, and the glue margin piece 14 in the same direction at substantially right angles by the fold lines 21 to 24, and the glue margin piece 14 is bent at the rear plate 11. After forming a four-sided cylindrical case body by bonding to the side edges of the inner cover plate 17, the inner cover plate 17 is bent inward by a fold line 27, and further, the arc-shaped fold lines 25 a, 25 b, 26 a, 26 b are When the upper cover plates 15a and 15b and the lower cover plates 16a and 16b are bent at right angles toward the inside of the case, the front plate 10 and the rear plate 11 are bent outward so as to follow the shape of each cover plate. In other words, a so-called pillow case state is formed, both lid plates are bent inwardly to close the upper and lower openings of the case body, and the leg pieces 18 protrude downward from the case body.
[0010]
The plastic case formed in this way can be made independent with the lower edges of the leg pieces 18 extending downward from the side plates 13 and 14 installed. Accordingly, the outer surface of the case bottom plate can be prevented from being rubbed and damaged during transportation and display, and the leg piece 18 acts as a cushion when dropped, so that the articles stored in the case can be prevented from being damaged.
[0011]
【The invention's effect】
As described above, according to the plastic case of the present invention, the articles stored in the case can be protected from dropping impacts and the like by the leg pieces extending from the lower portion of the side plate of the case body, while maintaining the independence. It is possible to prevent the outer surface of the bottom plate from being damaged.
[Brief description of the drawings]
FIG. 1 is a development view showing one embodiment of a plastic case of the present invention.
FIG. 2 is a front view of the plastic case after assembly.
FIG. 3 is a perspective view of the plastic case as seen from the rear plate side.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Plastic sheet, 10 ... Front plate, 11 ... Rear plate, 12, 13 ... Side plate, 14 ... Paste piece, 15a, 15b ... Upper cover plate, 16a, 16b ... Lower cover plate, 17 ... Inner cover plate, 18 ... leg pieces, 21-24 ... fold lines, 25a, 25b, 26a, 26b ... arc-shaped fold lines, 27 ... fold lines

Claims (1)

Through curved outward and the front plate and the rear plate and four sides cylindrical case body consisting of a pair of side plates, the arcuate fold line provided in the concave up or down the open end of the front plate and the rear plate And a pair of side plates, each having a curved shape with a leading edge projecting, and closing the upper and lower openings of the case body by bending along the arc-shaped folding line, respectively. A leg piece extending from the lower opening end of the rear plate, the rear plate is formed narrower than the front plate, and the radius of the arc-shaped bending line of the rear plate is an arc shape of the front plate. A plastic case characterized by being formed smaller than the radius of the fold line .

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