JP2004161304A - Folding container - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent an overlap fitting portion from getting damaged with a protruding length of the fitting portion from a closing stage shortened and therefore strength and rigidity of the fitting portion reinforced, and to prevent an overlap from flexing inwardly into a folding container with strength and rigidity of the overlap reinforced between the overlap fitting portion of one of half lids and the closing stage of the other half lid. <P>SOLUTION: The folding container consists of a body C having an upper frame 1, a base 2, trap sidewalls 3 and split sidewalls $ having an upper split sidewall 4' and a lower split sidewall 4"; and a pair of half lids 5' hinged to opposite frames of the upper frame. The folding container is structured such that the overlap fitting portion 50d of one of the half lids overlaps the closing stage 50c of the other half lid, and a peripheral wall of the overlap fitting portion is formed to be a semicircular or smaller arc. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a folding container used for storing, transporting, or transporting various articles.
[0002]
[Prior art]
A conventional folding container will be described with reference to FIGS.
[0003]
The main body C of the folding container includes a frame-shaped upper frame 1, a bottom 2, and a side wall that is hinged at the upper end to the upper frame 1 and that is rotatable in the inward direction of the folding container (hereinafter, this side wall is referred to as And a side wall (hereinafter referred to as a divided side wall) 4 which is vertically divided and connected via an appropriate hinge portion. Is composed of an upper divided side wall 4 'located above the hinge portion and a lower divided side wall 4 "located below the hinge portion, and the upper end of the upper divided side wall 4' , Is hinged to the upper frame 1, and the lower end of the lower divided side wall 4 ″ is hinged to the bottom 2.
[0004]
The lid 5 covered by the main body C of the folding container is constituted by a pair of half lids 5 ', and the straight long side 5a of the half lid 5' is formed on the upper part by an appropriate hinge member H1. The frame 1 is hinged to the opposite long side frame 1a. A plurality of substantially trapezoidal or parabolic fitting projections 5b and fitting fittings located between the fitting projections 5b are provided on the side of the half-cover 5 'opposite to the linear long side 5a. A concave portion 5c is formed, and a part of the fitting concave portion 5c located on the base side of the fitting convex portion 5b is closed, and a closed step portion 5d one step lower than the fitting convex portion 5b is formed. I have. The upper surface of the closed step portion 5d located at the corner formed by the peripheral wall 5b1 of the fitting convex portion 5b and the closed step portion 5d (the half lid 5 'covers the body C of the folding container assembled in a box shape). When the lid is closed, a fitting rib 6 is formed on the upper surface 5d1 so as to extend in a direction approaching each other from a predetermined portion of the peripheral wall 5b1 of the adjacent fitting protrusion 5b. . A fitting recess 5b2, into which the fitting rib 6 can be fitted, is formed on the opposite peripheral wall 5b1 of the fitting protrusion 5b protruding from the closing step 5d.
[0005]
As shown in FIGS. 4 and 7, in order to fold the main body C of the folding container assembled in a box shape, first, the flip-up side wall 3 in a substantially vertical state is rotated upward. As shown in FIG. 5, the hinge portion connecting the upper divided side wall 4 ′ and the lower divided side wall 4 ″ forming the divided side wall 4 is moved inward, and the upper divided side is formed. The side wall 4 'and the lower divided side wall 4 "overlap each other so that they can be folded into a low-height compact state as shown in FIG. In addition, the upper frame 1 is lifted upward with respect to the bottom portion 2 so that the upper divided side wall 4 ′ and the lower divided side wall 4 ″ that have been overlapped with each other are substantially flush with each other, and then the flip-up side wall that is substantially horizontal. It is configured such that it can be assembled in a box shape by rotating the lower part 3 in a substantially vertical state.
[0006]
As shown in FIG. 7, the opening of the main body C of the folding container assembled in a box shape, that is, the opening of the upper frame 1, or the folded container as shown in FIG. When the opening of the upper frame 1 in the state is covered with a lid 5 composed of a pair of half lids 5 ′, the fitting protrusion 5 b of one half lid 5 ′ is connected to the other half lid 5 ′. 5 ′ is fitted into the fitting concave portion 5c, and the tip of the fitting convex portion 5b of one half-lid 5 ′ is placed on the closed step 5d of the other half-lid 5 ′. Further, a fitting rib 6 formed on a closed step portion 5d of the other half-cover 5 ′ is provided in a fitting recess 5b2 formed on the peripheral wall 5b1 of the fitting protrusion 5b of the one half-cover 5 ′. , So as to fit each other. With such a configuration, the pair of half-lids 5 ′ does not rattle, and even if a load is applied from above to a portion where the pair of half-lids 5 ′ are fitted to each other, even if the load is applied from above, The half-lids 5 'of the folding container are configured so as not to sink into the inside of the main body C of the folding container.
[0007]
The folding container having the above configuration is disclosed in, for example, Japanese Utility Model Publication No. 58-31668 and Japanese Patent Application Laid-Open No. 11-35034.
[0008]
[Problems to be solved by the invention]
In the above-mentioned conventional folding container, since the tip of the fitting projection 5b protruding from the closing step 5d of the half lid 5 'is long, the tip of the fitting projection 5b and the closing step 5d are not provided. There is a problem that when a load is applied to this portion from above, the half lid 5 'is largely bent in the direction toward the inside of the main body C of the folding container. In addition, since the tip of the fitting projection 5b protruding from the closing step 5d of the half-cover 5 'is long, the length of the short side of the half-cover 5' (the fitting projection from the long side 5a). (The length to the tip of the portion 5b) L1 becomes longer, so that the weight of the half lid 5 'increases, and the half lid 5' is attached to the divided side wall 4 of the main body C of the folding container assembled in a box shape. When the opening of the main body C is opened by overlapping, the tip of the half lid 5 'comes into contact with the floor or the like.
[0009]
An object of the present invention is to solve the above-mentioned problems of the conventional folding container and to provide a folding container in which the strength and rigidity of the lid are improved.
[0010]
[Means for Solving the Problems]
In order to achieve the above-described object, the present invention provides a main body having an upper frame, a bottom, a flip-up side wall, a divided side wall composed of an upper divided side wall and a lower divided side wall, and a frame portion opposed to the upper frame. In the folding container comprising a pair of hinged half-lids, firstly, the overlapping fitting portion of one half-lid and the closing step portion of the other half-lid are overlapped. And the peripheral wall portion of the overlapped fitting portion is formed in an arc shape less than or equal to a semicircle, and secondly, the upper surface of the closed step portion is connected to the opposed base side arcuate peripheral wall portion. Is formed.
[0011]
【Example】
Hereinafter, embodiments of the present invention will be described. However, the present invention is not limited to the embodiments without departing from the spirit of the present invention. Further, the folding container of the present invention has substantially the same configuration except that the pair of half lids constituting the lid are different from the half lids of the above-described conventional folding container. , The same reference numerals are used, and the detailed description is omitted.
[0012]
In the present invention, an inflection point p1 is connected to a side opposite to the linear long side 5a of the half-cover 5 ', which is hinged to the long side frame 1a of the upper frame 1 opposite thereto. A tip side arc-shaped peripheral wall portion 50a formed of an arc of a semi-circle or less, protruding outward from the center line L1, and a base side formed of an arc of a semi-circle or less withdrawn inward from the center line L1 connecting the inflection point p1. A wavy peripheral wall 50 is formed by the arc-shaped peripheral wall portion 50b. Further, a closed step 50c whose tip substantially coincides with the center line L1 connecting the inflection points p1 and which corresponds to the above-described closed step 5d is formed by a recess formed between the base-side arc-shaped peripheral wall 50b. It is formed to be closed. The center line L1 connecting the inflection points p1, in other words,. The arc region of a semicircle or less protruding beyond the tip of the closing step 50c is hereinafter referred to as an overlap fitting portion 50d, and the overlap fitting portion 50d is a fitting protrusion of the above-described conventional half lid 5 '. It corresponds to the tip of the portion 5b.
[0013]
The upper surface of the closing step 50c (the surface located above when the half-lid body 50 'covers the main body C of the folding container assembled in a box shape) 50c1 has a base-side arc-shaped peripheral wall portion opposed thereto. A connecting rib 60 connecting the connecting ribs 50b is formed, and the connecting rib 60 is located on the side of the opposed base side arc-shaped peripheral wall 50b, and connects the tip of the closing step 50c, in other words, the inflection point p1. A straight line portion 60a parallel to the center line L1 and a radius of curvature substantially the same as that of the distal-side arc-shaped peripheral wall portion 50a and the root-side arc-shaped peripheral wall portion 50b, and an arc portion 60b protruding toward the root-side arc-shaped peripheral wall portion 50b. It consists of:
[0014]
At the tip of the closing step 50c, in other words, at the tip side arc-shaped peripheral wall 50a located beyond the center line L1 connecting the inflection point p1, the closing step 5d of the above-described conventional half lid 5 'is provided. A fitting concave portion 50e corresponding to the fitting concave portion 5b2 formed on the peripheral wall 5b1 of the fitting convex portion 5b projecting from the convex portion 5b is formed.
[0015]
As shown in FIG. 1, the opening of the main body C of the folding container assembled in a box shape, that is, the opening of the upper frame 1 is covered with a lid 5 composed of a pair of half lids 5 ′. In this case, the overlapping fitting portion 50d of one half cover 5 'is placed on the closed step 5c of the other half cover 5', and the tip side circle of the one half cover 5 ' It is configured such that the straight portion 60a of the connecting rib 60 formed on the closing step portion 50c of the other half lid 5 'is fitted into the fitting concave portion 50e formed on the arc-shaped peripheral wall portion 50a. Further, the distal end of the arcuate peripheral wall 50a on the distal end of one half lid 5 'is connected to the arc 60b of the connecting rib 60 formed on the closed step 50c of the other half lid 5'. It is configured to be inserted into a gap A1 formed between the arc-shaped peripheral wall 50b.
[0016]
As described above, since the distal-side arc-shaped peripheral wall portion 50a of the overlap fitting portion 50d of the pair of half lids 5 'constituting the lid 5 is formed in an arc of less than a semicircle, the overlap fitting portion 50d The projecting length from the closing step portion 50c is short, so that the strength and rigidity of the overlap fitting portion 50d are large, and therefore, the overlap fitting portion 50d is not damaged.
[0017]
Further, when the opening of the folding container is covered with the pair of half lids 5 ', the overlapping fitting portion 50d of one half lid 5' and the closing step 50c of the other half lid 5 'are formed. Since the overlapping portion has high strength and rigidity, even if a slight load is applied to the overlapping portion from above, the overlapping portion does not bend toward the inside of the folding container.
[0018]
Further, since the distal-side arc-shaped peripheral wall portion 50a of the overlapping fitting portion 50d of the pair of half-covers 5 'constituting the lid 5 is formed in an arc of less than a semi-circle, the short side of the half-cover 5' The length of the side (the length from the long side portion 5a to the tip of the overlap fitting portion 50d) L2 is shorter than the short side length L1 of the above-described conventional half-lid body 5 '. The weight of the half-cover 50 'is reduced, and the half-cover 5' is placed on the divided side wall 4 of the main body C of the folding container assembled in a box shape, and the opening of the main body C is opened. Furthermore, it is possible to prevent the tip of the half lid 5 'from contacting the floor or the like.
[0019]
Furthermore, since the connecting ribs 60 are formed on the upper surface 50c1 of the closed step portion 50c to connect the opposing root-side arc-shaped peripheral wall portions 50b, the strength of the closed step portion 50c and the root-side arc-shaped peripheral wall portions 50b is improved. The rigidity is improved, and the strength and rigidity of the half lid 5 'are improved. Accordingly, the strength and rigidity of the overlapping portion between the overlapping fitting portion 50d of one half lid 5 'and the closing step 50c of the other half lid 5' are improved, and the overlapping portion is formed inside the folding container. It can be reliably prevented from bending in the direction.
[0020]
【The invention's effect】
The present invention is configured as described above, and has the following effects.
[0021]
Since the peripheral wall of the overlapped fitting portion is formed in an arc shape of a semicircle or less, the length of projection of the overlapped fitting portion from the closed step portion is shortened, and therefore, the strength and rigidity of the overlapped fitting portion are increased. In addition, it is possible to prevent damage to the overlapped fitting portion and increase the strength and rigidity of the overlapped portion between the overlapped fitting portion of one half lid and the closed step portion of the other half lid, so that the overlapped portion However, it does not bend inward of the folding container.
[0022]
Since the connecting ribs for connecting the opposed base-side arc-shaped peripheral wall portions are formed on the upper surface of the closing step portion, the strength and rigidity of the closing step portion and the base-side arc-shaped peripheral wall portion are improved, and, as a result, the strength of the half lid body And rigidity are improved.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a state in which a folding container of the present invention is assembled in a box shape and covered with a lid.
FIG. 2 is a perspective view from above of a half lid constituting a lid of the folding container of the present invention.
FIG. 3 is a rear perspective view of a half lid constituting a lid of the folding container according to the present invention.
FIG. 4 is a perspective view showing a state in which a conventional folding container is assembled in a box shape and a lid is opened.
FIG. 5 is a perspective view of a conventional folding container being assembled or folded.
FIG. 6 is a perspective view showing a state in which a conventional folding container is folded.
FIG. 7 is a perspective view of a conventional folding container assembled in a box shape and covered with a lid.
FIG. 8 is a perspective view from above of a half lid constituting a lid of a conventional folding container.
[Explanation of symbols]
1 Upper frame 2 Bottom 3 Flap-up side wall 4 Divided side wall 4 ′ ... Upper divided side wall 4 ″ Lower divided side wall 5 Lid 5 ′ Half lid 50c Closed step 50d .... overlapping fittings

Claims (2)

An upper frame, a bottom, a flip-up side wall, a main body having a divided side wall composed of an upper divided side wall and a lower divided side wall, and a pair of half lids hinged to opposite frame portions of the upper frame. In the folding container, the overlapping fitting portion of one half lid and the closing step portion of the other half lid are configured to overlap, and the peripheral wall portion of the overlapping fitting portion is not more than a semicircle. A folding container characterized by being formed in an arc shape. 2. The folding container according to claim 1, wherein a connecting rib for connecting the opposing peripheral arc-shaped peripheral wall portions is formed on an upper surface of the closed step portion.

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