JP2002332034A - Folding container - Google Patents

Abstract

(57) Abstract: One opposing side wall (2) is set up substantially vertically, and the other opposing side wall (3) is set up substantially vertical, and folded in a box-shaped assembling container. The horizontal side surface h6c of the horizontal pin h6 constituting the male hinge member H3 of the side wall 2 which has been first set up in the substantially vertical state from the set state is changed to the planar inner inclined surface h2a of the female hinge member H1 of the bottom portion 1. , So as to make elastic contact. [Effect] Frequently, the folding container is repeatedly folded and assembled into a box shape, and even if the horizontal pin of the male hinge member or the female hinge member is worn, the self-standing function of the side wall that is first set up substantially vertically is achieved. There is no damage.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a folding container which can be folded so that a side wall disposed so as to surround a bottom portion overlaps the bottom portion.

[0002]

2. Description of the Related Art Conventionally, a pair of opposing side walls connected by an appropriate hinge connection to one opposing side of a bottom part having a substantially square planar shape, and the other opposing side of the bottom part, Folding containers are known which consist of a pair of opposing side walls connected by a suitable hinge connection. Then, in order to fold the folding container assembled in a box shape, one of the opposing side walls is turned down from the vertical state so as to overlap the bottom, and the other opposing side wall is further placed thereon from the vertical state. It is possible to fold compactly by laying it on top of one of the fallen side walls, and the other opposite side wall that was later fallen, first, perpendicularly to the bottom. It is configured such that it can be assembled into a box-shaped container by standing upright and then standing one of the opposed side walls perpendicular to the bottom.

[0003] As described above, when assembling a folded container into a box shape, the opposing side walls that have been fallen down later must first be erected perpendicularly to the bottom. It is known that a folding container provided with self-standing means is provided so that the above-mentioned opposed vertical wall stands not to fall down toward the bottom during the operation of vertically raising the previously folded opposed side wall. ing.

A projection is formed on the lower surface of the side wall that is first set up vertically, and a concave portion is formed on the upper surface of the bottom so that the projection formed on the lower surface of the side wall that is set up vertically can engage therewith. The projection formed on the bottom engages with the recess formed on the bottom, so that the side wall that is first vertically set up can be self-supporting means, or conversely, the recess can be formed on the lower surface of the side wall. There is known a self-standing means or the like having a projection formed on the upper surface of the bottom and engaging with a recess formed on the lower surface of the side wall (for example, Japanese Patent Application Laid-Open No. 8-318939). Also, a plurality of anti-slip ridges are formed on the bottom portion that comes into contact with the lower surface of the side wall that is first erected vertically, and the lower surface of the side wall is brought into frictional contact with the anti-slip ridge so that it is first erected vertically. There is also known a self-supporting means in which the side wall is configured to be self-supporting (for example, see Japanese Patent Application Laid-Open No. Hei 5-19).
No. 128).

[0005]

In the above-mentioned conventional folding container, the self-supporting means is constituted by the engagement between the projection and the concave portion, the frictional contact of the anti-slip ridge, and the like. With the use of the period, there is a problem that the projection and the concave portion or the anti-slip ridge are worn or damaged, and the first vertical side wall cannot be self-supported. Also, needless to say, if the formation positions of the projections and the concave portions are not accurate, the side walls that are initially set up vertically cannot be self-supporting. There was a problem that it became large.

An object of the present invention is to solve the problems of the above-mentioned conventional folding container.

[0007]

SUMMARY OF THE INVENTION In order to achieve the above-mentioned object, the present invention provides a box-shaped structure in which one opposing side wall is set substantially vertically, and the other opposing side wall is set substantially vertical. In a foldable container that can be assembled into a folded state, the horizontal side surface of the horizontal pin forming the hinge male part of the side wall that is first set up substantially vertically from the folded state is the flat inside of the bottom hinge female member. It is configured to elastically contact the inclined surface.

[0008]

Embodiments of the present invention will be described below, but the present invention is not limited to these embodiments unless it exceeds the gist of the present invention.

As shown in FIG. 1, the folding container includes a bottom 1, a long side 2 connected to a long side of the bottom 1 by a hinge member described later, and a short side of the bottom 1. The bottom side, the long side wall 2, and the short side wall 3 are integrally formed of synthetic resin by injection molding or the like, respectively. I have.

As shown in FIG. 1, a long side wall 2 and a short side wall 3 stand substantially vertically with respect to a bottom 1.
From the state of being assembled in a box shape, first, the substantially vertical short side wall 3 is turned on the bottom 1 to overlap the bottom 1, and then the substantially vertical long side wall 2 is placed on the bottom 1. By pivoting in the direction and over the short side walls 3 overlying the bottom 1, the folding container can be compactly folded as shown in FIG. I have.

First, from the folded state shown in FIG. 3, first, as shown in FIG. 2, the long side wall 2 superimposed on the short side wall 3 is substantially vertically Stand up. In a state in which the long side wall 2 is set up substantially vertically, the long side wall 2 is configured not to be easily rotated in the direction of the bottom portion 1 by a self-standing means described later without being manually supported by an operator. Have been. Next, with the long side wall 2 standing substantially vertically independently, the short side wall 3 laid on the bottom 1 is raised substantially vertically, as shown in FIG.
Assemble the folding container into a box.

Next, the bottom 1 integrally formed of a synthetic resin will be described mainly with reference to FIG.

On the opposite long side of the bottom 1 having a substantially rectangular planar shape, a long-side bank 1a having a substantially inverted U-shaped cross section perpendicular to the long side is formed. On the outer edge of the upper surface 1a1 of the side bank portion 1a, an outer wall extending upward (hereinafter, referred to as an outer wall).
It is simply called the long side outer wall. ) 1b is the long side bank 1a
It is erected so as to be substantially flush with the outer wall surface of the.

On the inner edge of the upper surface 1a1 of the long-side bank 1a, substantially vertical plate-like portions h1 are erected at predetermined intervals, and at the upper end of the plate-like portion h1, a long side is provided. A hook h extending in the direction of the side outer wall 1b and having a tip curved downward.
2 are formed, and the long side hinge female member H1 having elasticity is constituted by the plate-shaped portion h1 and the hook h2. Is the upper end of the long side hinge female member H1, in other words, the upper end of the hook h2 substantially the same as the upper end of the long side outer wall 1b,
A lower gap is formed between the long side hinge female member H1 and the long side outer wall 1b. In this embodiment, an example in which four long side hinge female members H1 are provided is shown.

A predetermined number of reinforcing blocks 1c are formed at the corners formed by the inner surface 1b1 of the long side outer wall 1b and the upper surface 1a1 of the long side bank 1a. Are formed at substantially the same height as the upper end of the long side outer wall 1b. In this embodiment, an example is shown in which three reinforcing blocks 1c are formed, one each between the long side hinge female members H1.

On the opposite short side of the bottom 1, a similar short side bank 1 d lower than the long side bank 1 a is formed, and the outer side of the upper surface 1 d 1 of the short side bank 1 d is formed. An outer wall (hereinafter, simply referred to as a short side outer wall) 1e extending upward and lower than the long side bank portion 1a is formed at the edge. On the inner edge of the upper surface 1d1 of the short side bank 1d, at predetermined intervals, facing the short side outer wall 1e,
A substantially vertical plate-like portion h3 is provided upright, and a hook h4 is formed at the upper end of the plate-like portion h3 so as to extend in the direction of the short side outer wall 1e and to have a tip curved downward. The short-side hinge female member H2 having elasticity is constituted by the shape portion h3 and the hook h4. The upper end of the hook h4 of the short side hinge female member H2 and the upper end of the short side outer wall 1e are formed at substantially the same height. In this embodiment, 4
An example in which the short side hinge female members H2 are provided is shown.

The four corners of the bottom 1 have a short side outer wall 1e.
A corner block 1f having a substantially L-shaped planar shape is formed extending upward beyond the long side outer wall 1b. Inside the corner block 1f, a long side hinge female part H1 is formed. A step 1f1 having substantially the same height is formed.

Next, the long side wall 2 integrally formed of a synthetic resin will be described mainly with reference to FIG.

The long side wall 2 has a horizontally long plate-like portion 2a, a lower flange 2b extending horizontally from the lower end of the horizontally long plate-like portion 2a, and a horizontal extension from the upper end of the horizontally long plate-like portion 2a. Upper flange 2c, and side flanges 2d formed at both ends of the horizontally long plate-like portion 2a and connecting both ends of the lower flange 2b and both ends of the upper flange 2c. An appropriate number of horizontal ribs 2e and vertical ribs 2f are formed in the plate-like portion 2a surrounded by the side flanges 2c and the side flanges 2d as needed to reinforce the long side walls 2.

On the lower surface of the lower flange 2b of the long side wall 2,
The long side hinge male part H3 corresponds to the long side hinge female member H1 formed on the long side bank part 1b of the bottom part 1 described above.
The long side hinge male part H3 is formed on the lower surface of the lower flange 2b with a support piece h5 having a pair of lower end edges formed in a substantially semicircular shape and vertically suspended at predetermined intervals. And a horizontal pin h6 bridged by a pair of support pieces h5. Reference numeral 2g denotes a long side wall locking member as an example extending substantially perpendicularly to the plate portion 2a from both ends of the long side wall 2, and the long side wall locking member 2g will be described later. A fitting hole 2g1 into which a ridge or a hook constituting the short side wall locking member can be inserted is formed.

Reference numeral 2h denotes a cutout recess formed in the lower corner of the long side wall 2. When the folding container is assembled in a box shape, approximately L formed in the four corners of the bottom 1.
The letter-shaped corner block 1f is configured to be able to enter so as not to interfere with the long side wall 2. In addition,
2i is a support piece h5 constituting the long side hinge male part H3.
The supporting piece h5 and the hanging piece 2i and the hanging piece 2i are connected to each other by a connecting beam 2j. 2k is a gap formed between the hanging pieces 2i or between the supporting piece h5 and the hanging piece 2i so that the reinforcing block 1c1c formed on the bottom 1 is inserted when the folding container is assembled. Is configured.

As shown in FIG. 6, the horizontal pin h6 bridged by a pair of support pieces h5 constituting the long side hinge male part H3 is formed in a substantially square column shape. However, in the state of being set substantially vertically, one of the four corners of the substantially square prism-shaped horizontal pin h6 has one of the opposite corners h6a positioned in the vertical direction, and the other has the opposite corner. The portion h6b is configured to be located substantially horizontally.

Further, as shown in FIG.
On the inner wall surface of the hook h2 of the long side hinge female member H1 formed in the above, a flat inner inclined surface h2a inclined upward at an angle of about 135 degrees with respect to the vertical surface is formed, which will be described later. As described above, when the bottom 1 and the long side wall 2 are assembled and the long side wall 2 is erected substantially perpendicularly to the bottom 1, the long side hinge female member H1 having elasticity formed on the bottom 1 is formed.
Of the hook h2, the inner side of the long side wall 2
Among the four side surfaces of the substantially square prism-shaped horizontal pin h6 constituting the long side wall side hinge male portion H3 formed on the side surface, the flat side surface h6c located on the inner side of the folding container and at the upper side has elasticity. It is constituted so that it may contact.

Next, mainly referring to FIG.
Will be described.

The short side wall 3 has a horizontally long plate-like portion 3a, a lower flange 3b extending horizontally from the lower end of the horizontally long plate-like portion 3a, and a horizontal extension from the upper end of the horizontally long plate-like portion 3a. An upper flange 3c and side flanges 3d formed at both ends of the horizontally long plate-like portion 3a and connecting both ends of the lower flange 3b and both ends of the upper flange 3c.

On the lower surface of the lower flange 3b of the short side wall 3,
The short side hinge male part H4 corresponds to the short side hinge female member H2 formed on the short side bank 1d of the bottom part 1 described above.
Are formed on the lower side of the lower flange 3b, and the short side hinge male part H4 has a pair of lower end edges vertically suspended at a predetermined interval and a support piece h7 having a substantially semicircular shape. And a column-shaped horizontal pin h8 bridged by a pair of support pieces h7. In addition, 3g1 and 3g2 are protrusions and locking pieces that constitute the short side wall side locking member 3g as an example disposed outside the side flange 3d of the short side wall 3.
In addition, 3h is a connecting beam for connecting the adjacent support pieces h7, and 3i is a hand-held opening.

Next, the bottom 1, the long side wall 2 and the short side wall 3 are
An operation of assembling the container into a folding container will be described.

To hinge the long side wall 2 to the bottom 1, as shown in FIG. 8, the long side wall 2 is disposed above the long side bank 1 a of the bottom 1, and then the long side wall 2 is connected. 2 to lower the long side hinge female member H1 formed on the bottom 1
In the gap between the hook h2 and the long side outer wall 1b.
The horizontal pin h6 in the form of a square pillar is inserted into the male male part H3 of the long side wall hinge formed on the side wall, and the horizontal pin h6 in the form of a square square is connected to the female female member H on the long side hinge formed in the bottom part 1.
The bottom 1 and the long side wall 2 are hingedly connected to each other by being hooked on the first hook h2. At the time of this hinge connection, the reinforcing block 1c formed on the bottom 1 is inserted into the gap 2k formed between the hanging pieces 2i formed on the long side wall 2 and between the supporting piece h5 and the hanging piece 2i. Will be done. Thus, the bottom 1 and the long side wall 2 are hingedly connected to each other,
Is in a substantially vertical state, as described above, the flat inner inclined surface h2a of the hook h2 of the long side hinge female member H1 formed on the bottom portion 1 is connected to the long side wall hinge male formed on the long side wall 2. A substantially square pillar-shaped horizontal pin h6 constituting the portion H3
Of the four sides of the inside of the folding container,
Further, since it is configured to resiliently contact the planar side surface h6c located above, it is first shown in FIG. 2 from the folded state shown in FIG. As described above, the long side wall 2 laid on the short side wall 3
When it is set up substantially vertically, the flat inner inclined surface h2a of the hook h2 of the elastic long side hinge female member H1 formed on the bottom 1 and the length formed on the long side wall 2 are formed. The long side wall 2 is configured so as not to easily rotate in the direction of the bottom 1 by self-standing means consisting of a horizontal pin h6 having a substantially regular quadrangular prism shape that forms the side wall side hinge male portion H3.

In order to connect the short side wall 3 to the bottom 1 by hinges, as shown in FIG. 9, the short side wall 3 is arranged above the short side bank 1d of the bottom 1, and thereafter, Short side wall 3
Is lowered, and the gap between the hook h4 of the short side hinge female member H2 formed on the bottom portion 1 and the short side outer wall 1e and the cylindrical shape of the short side wall hinge male portion H4 formed on the short side wall 3 is formed. And the cylindrical horizontal pin h8
Is hooked on the hook h4 of the short side hinge female member H2 formed on the bottom portion 1 so that the bottom portion 1 and the short side wall 3
And are hinged.

As described above, the bottom 1 has the long side walls 2
Then, the short side wall 3 is hinged and the folding container is assembled.

As shown in FIG. 3, a long container 2 is superimposed on the bottom 1 and a short container 3 is superimposed on the long wall 2 in a folded state. From, to assemble the folding container into a box,
First, as shown in FIG. 2, the long side wall 2 superimposed on the short side wall 3 is set to be substantially vertical, but as described above, the long side wall 2 is In the upright position, as shown in FIG.
A flat inner inclined surface h2a of the hook h2 of the long side hinge female member H1 formed on the long side hinge female member H1 is formed of a substantially square prism-shaped horizontal pin h6 forming the long side wall side hinge male portion H3 formed on the long side wall 2. Of the four side surfaces, it is configured to elastically contact the flat side surface h6c located on the inner side of the folding container and at the upper side, so that the operator can hold the long side wall 2 by hand. Even if it is not supported, the long side wall 2 does not rotate in the direction of the bottom 1 and is independent.

Then, with the long side wall 2 standing substantially vertically independently, the short side wall 3 laid on the bottom portion 1 is set up substantially vertically and folded as shown in FIG. Assemble the container into a box. When the short side wall 3 is rotated in the vertical direction, a short hole formed in the short side wall 3 is inserted into a fitting hole 2g1 formed in the long side wall locking member 2g formed in the long side wall 2. The ridge 3g1 and the locking piece 3 of the side wall-side locking member 3g
g2 is inserted, and the locking piece 3g2 of the short side wall locking member 3g is locked to a predetermined projection or the like of the long side wall locking member 2g, so that the box-shaped folded container is assembled. The short side wall 3 is configured so as not to easily fall in the direction of the bottom 1. Since various types of the long side wall side locking member and the short side wall side locking member are known, the long side wall side locking member 2g and the short side wall side locking member as in the present embodiment are not necessarily required. It is not limited to the member 3g.

As shown in FIG. 10, when the long side wall 2 is in a substantially horizontal state where the folding container is folded, the long side wall-side hinge male portion H3 of the long side wall 2 is formed. Horizontal side h of the horizontal pin h6
A similar planar side surface h6d is located above the upper side 6c, and the side surface h6d is the planar inner inclined surface h of the hook h2 of the elastic long side hinge female member H1 formed on the bottom portion 1.
2a is elastically contacted, and therefore the upward movement of the long side wall 2 in a substantially horizontal state is restricted, so that the long side wall 2 is prevented from jumping up during transportation of the folded container in the folded state. Will be.

In order to assemble the folding container into a box shape from the folded state, first, the long side wall 2 superimposed on the short side wall 3 is to be set substantially vertically. In the state where the long side wall 2 is set up substantially vertically, as shown in FIG. 6, the flat inner inclined surface h2a of the hook h2 of the long side hinge female member H1 formed on the bottom portion 1 is formed. Is a substantially square pillar-shaped horizontal pin h forming a long side hinge male part H3 formed on the long side wall 2.
6, among the four side surfaces, the inner surface of the folding container and the planar side surface h6c located above are configured to elastically contact with each other. Even if the horizontal pin h6 and the long side hinge female member H1 having a substantially square pillar shape are worn out by repeating the assembling work into the box shape, the function of the self-supporting means of the long side wall 2 is not impaired.

The above-mentioned self-standing means is provided on a hinge comprising a long side hinge female member H1 for connecting the bottom 1 and the long side wall 2 and a long side hinge male part H3 for the long side wall 2. Since there is no need to form a projection or a recess separate from the hinge on the side wall and the bottom as in the conventional case, the structure of the folding container is simplified, and the manufacturing cost of the folding container can be reduced. .

In the embodiment described above, an example is shown in which the horizontal pin h6 constituting the long side wall side hinge male portion H3 is formed in a substantially square column shape, as shown in FIG. When the long side wall 2 is set up substantially vertically, the inner inclined surface h2a of the hook h2 of the long side hinge female member H1 formed on the bottom 1 is formed on the long side wall 2 formed on the long side wall 2. The long side wall 2 can be made independent by elastically contacting either side surface of the horizontal pin h6 constituting the side hinge male part H3. Therefore, the horizontal pin h6 constituting the long side wall male hinge part H3 is: The shape is not limited to a substantially regular quadratic prism shape, and may be an appropriate polygonal prism shape such as a substantially regular triangular prism shape or a substantially pentagonal prism shape. Naturally, the entire horizontal inclined surface h2a of the hook h2 of the long side hinge female member H1 formed on the bottom 1 and the long side hinge male portion H3 formed on the long side wall 2 are formed. It is not necessary that the entire surface of the side surface of the pin h6 be in contact with the pin h6.

[0037]

Since the present invention has the above-described structure, the following effects can be obtained.

Frequently, when the folding operation of the folding container and the assembling operation into the box shape are repeated, even if the horizontal pin of the male hinge member or the female hinge member is worn, the self-standing function of the side wall which is first set up substantially vertically is not achieved. There is no damage.

Since the self-supporting means is provided on the hinge which connects the bottom and the side wall which is first set up substantially vertically, a projection or a recess separate from the hinge is formed on the side wall or the bottom as in the conventional case. Since there is no need to perform the operation, the structure of the folding container is simplified, and the manufacturing cost of the folding container can be reduced.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a state in which a folding container according to the present invention is assembled in a box shape.

FIG. 2 is a perspective view of the folding container of the present invention in the middle of folding.

FIG. 3 is a perspective view of the folding container according to the present invention in a folded state.

FIG. 4 is a perspective view of the bottom of the folding container of the present invention.

FIG. 5 is a perspective view of a long side wall of the folding container according to the present invention.

FIG. 6 is a partial vertical side sectional view of a bottom portion and a long side wall along a short side wall of the folding container of the present invention.

FIG. 7 is a perspective view of a short side wall of the folding container according to the present invention.

FIG. 8 is an exploded partial perspective view of a bottom portion and a long side wall of the folding container according to the present invention.

FIG. 9 is an exploded partial perspective view of a bottom portion and a short side wall of the folding container according to the present invention.

FIG. 10 is a partial vertical side sectional view of a bottom portion and a long side wall along a short side wall of the folding container according to the present invention.

[Explanation of symbols]

 H1 Long side hinge female member H2 Short side hinge female member H3 Long side hinge male member H4 Short side hinge male member 1 Bottom part 2 Long side wall 3 Short side wall

 ────────────────────────────────────────────────── ─── Continuing from the front page (72) Inventor Masanobu Matsuno 1 at 474, Honda, Oaza, Hozumi-cho, Motosu-gun, Gifu Prefecture (72) Inventor Yoshihiro Funatsu 1-474, Honda at Ozumi, Hozumi-cho, Motosu-gun, Gifu F term in the company (reference) 3E061 AA02 AA05 AB09 CA02 CA12 DB11

Claims (1)

[Claims] 1. An opposing side wall is set up substantially vertically, and then the other opposing side wall is set up substantially vertical, and then, in a box-shaped assembling container, the folded container is first set in a substantially folded state. It is characterized in that the flat side surface of the horizontal pin forming the hinge male member of the side wall set up in a vertical state elastically contacts the flat inner inclined surface of the bottom hinge female member. Folding container.