JP2002128071A - Folding container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To stack a small-sized folding container on a large-sized folding container in a stable state by preventing the small-sized folding container which is placed on the large-sized folding container from detaching from long side walls of the large-sized folding container and being inclined, or from falling into inside of the large-sized folding container. SOLUTION: Fitting projections 2n which can be fitted in recesses 10c formed on the back face of a bottom part 10 of an upper positioned small-sized folding container C10 are formed on the upper face of a flange part 2e of long side walls 2 of a lower positioned large-sized folding container C1. When the small- sized folding container is stacked on the lower positioned large-sized folding container, the fitting projections which are formed on the upper face of the flange part of the long side walls of the lower positioned large-sized folding container are fitted in the recesses which are formed on the back face of the bottom part of the upper positioned small-sized folding container.

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, as shown in FIG. 9, opposed long sides of a bottom 1 having a substantially rectangular planar shape are provided.
A folding container (hereinafter, referred to as a large folding container) C1 including a long side wall 2 connected via a hinge portion and a short side wall 3 connected via a hinge portion to the opposite short side of the bottom portion 1 similarly. Also, the same as the above-mentioned short side wall 3 connected via a hinge to opposite long sides of a bottom 10 having a substantially rectangular planar shape smaller than the above-mentioned bottom 1 Long side wall 20 having a length
And a short side wall 30 connected to the opposite short side of the bottom portion 10 via a hinge portion and having a length approximately half the length of the long side wall 2 (hereinafter referred to as a small folding container). C10 is known.

[0003] The large folding container C1 is placed on the bottom 1 by folding the short side wall 3 inward from the state of being assembled in the box shape shown in FIG. And folded on the bottom portion 1 and the short side wall 3 so as to be folded. Similarly, the small foldable container C10 is also placed on the bottom 10 by folding the short side wall 30 inward from the state of being assembled in the box shape shown in FIG. And folded on the bottom 10 and the short side wall 30 to be folded.

At the inner corners of the upper ends of the long side wall 2 and the short side wall 3 of the large folding container C1 in the assembled state, cutout steps 2a, 3a are formed respectively. Notched step portions 20a and 30a are also formed on the inner corners of the upper end portions of the long side wall 20 and the short side wall 30 of the small folding container C10 in the folded state, respectively. In addition, on the back surface of the bottom 1 of the large-sized folding container C1, the long side wall 2 of the assembled large-sized folding container C1 located below when stacked is provided.
The notch step 2a and the notch step 3a of the short side wall 3 described below are formed so as to extend downward beyond the lower end 1a 'of the peripheral wall 1a of the bottom portion 1. I have.
Similarly, on the back surface of the bottom portion 10 of the small folding container C10, a fitting portion described later is formed so as to extend downward beyond the lower end 10a 'of the peripheral wall 10a of the bottom portion 10.

Conventionally, as an example, as shown in FIG. 9, one or two small foldable containers C10 are stacked on a large foldable container C1.

[0006]

As an example, as shown in FIG. 9, when one or two small foldable containers C10 are stacked on a large foldable container C1, they are positioned at an upper position. Due to the weight of the small foldable container C10, the vicinity of the central portion of the long side wall 2 of the large foldable container C1 bulges outward. There has been a problem that the bottom 10 of the small folding container C10 placed near the center of the side wall 2 is disengaged from the long side wall 2 and tilts or falls into the large folding container C1. In the case where the size of the folding container is increased and the length of the long side wall 2 in the lateral direction becomes longer, the vicinity of the central portion of the long side wall 2 is particularly likely to bulge outward, and the above problem becomes more remarkable. Become.

Further, when one small folding container C10 is stacked on the large folding container C1, the mold folding container C10 moves along the long side wall 2 of the large folding container C1 located below. There was an easy problem.

Further, when one or two small foldable containers C10 are stacked on the large foldable container C1, the weight of the small foldable container C10 located above causes the long side walls of the large foldable container C1 to be stacked. There is a problem that the long side wall 2 is damaged by bulging outward or buckling in the vicinity of the center of the long side wall 2. In the case where the folding container becomes large and the length of the long side wall 2 in the lateral direction becomes longer, damage to the long side wall 2 is particularly likely to occur.

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

[0010]

SUMMARY OF THE INVENTION In order to achieve the above-mentioned object, the present invention firstly provides the above-mentioned foldable container with the above-mentioned foldable container on the upper surface of the flange portion of the long side wall of the foldable container. Forming a fitting projection that can fit into the recess formed on the bottom back of the small folding container that is smaller than the bottom of the container, when the small folding container is stacked on top of the folding container located below, The fitting convex portion formed on the upper surface of the flange portion of the long side wall of the folding container located in the above is fitted into the concave portion formed on the bottom rear surface of the small folding container located on the upper side,
The long side wall of the lower folding container is configured to prevent outward bulging. Second, the outer surface located near the vertical center line of the long side wall of the folding container includes: A vertical reinforcing rib extending from the flange portion to the lower horizontal rib is formed.

[0011]

Embodiments of the present invention will be described below, but the present invention is not limited to these embodiments unless it departs from the gist of the present invention. Note that the same reference numerals are used for the same components as those of the above-described conventional large-sized folding container and small-sized folding container, and detailed description thereof is omitted.

The large folding container C1 of the present embodiment.
Similarly, a long side wall 2 connected via a hinge portion to an opposite long side of a bottom 1 having a substantially rectangular planar shape.
And a short side wall 3 connected to the opposite short side of the bottom 1 via a hinge. Long side wall 2
Has a horizontally long plate portion 2b, an upper horizontal portion 2c extending horizontally from the upper end of the plate portion 2b to the outside, and a vertical portion 2d extending upward from the tip of the upper horizontal portion 2c. And a flange portion 2e extending horizontally from the upper end of the vertical portion 2d to the outside, and the upper horizontal portion 2c and the vertical portion 2d form the notch step portion 2a described above.

A lower horizontal rib 2f extending horizontally from the lower end of the plate portion 2b to the outside is formed, and an outer surface of the plate portion 2b located near and below the flange portion 2e has:
One or more intermediate horizontal ribs 2g, 2
h (in the present embodiment, two intermediate horizontal ribs are formed). Further, from the vertical end of the plate portion 2b, a vertically long side portion 2i that is perpendicular to the plate portion 2b and extends in the short side wall 3 direction in a state where the large-sized folding container C1 is assembled is formed. And
On the side part 2i, an engaging female part 2j that can engage with the engaging male parts 3b formed on both ends of the short side wall 3 is formed. In a state where the large folding container C1 is assembled, an engaging female part 2j formed on the side part 2i of the long side wall 1;
The engagement with the engagement male portions 3b formed at both ends of the short side wall 3 is such that the short side wall 3 is easily locked so as not to fall inward. There are various known lock mechanisms including the engaging female portion 2j and the engaging male portion 3b of the short side wall 3, and a detailed description thereof will be omitted. Further, an appropriate number of vertical ribs 2k extending outward are formed at both ends of the plate portion 2b of the long side wall 1 and in the vicinity thereof. Further, on the outer surface of the long side wall 1, vertical ribs 2m connecting the flange portion 2e and the intermediate horizontal ribs 2g, 2h are formed at appropriate intervals.

On the upper surface of the flange portion 2e located near the vertical center line of each long side wall 2 with the vertical center line of the long side wall 2 therebetween, a pair of fitting projections 2n are formed with the vertical center line therebetween. Is formed. The outer surface of the long side wall 2 along the vertical center line of the long side wall 2 and the outer surface of the long side wall 2 located on both sides of the vertical center line extend from the flange portion 2e to the lower horizontal rib 2f. The existing vertical reinforcing rib 2p is formed. In this embodiment, three vertical reinforcing ribs 2p are formed, but only one vertical reinforcing rib 2p along the vertical center line may be formed, or the vertical reinforcing rib 2p may be formed along the vertical center line. The vertical reinforcing ribs 2p may be omitted, and two vertical reinforcing ribs 2p may be formed on both sides of the vertical center line, or four or more vertical reinforcing ribs may be formed in the central region of the long side wall 2. The reinforcing rib 2p can also be formed.

As shown in FIG. 6, which is a perspective view of the back surface of the small folding container C10, at least near both ends of the back surface located on the short side 10b side of the bottom portion 10 of the small folding container C10. Is formed. 10d is a notch step 2 of the long side wall 20 of the assembled small folding container C10 located below when the small folding containers C10 are stacked.
0a and the above-described fitting portion fitted to the cutout step portion 30a of the short side wall 30, and is configured to extend downward beyond the lower end 10a 'of the peripheral wall 10a of the bottom portion 10. A cross rib 10d 'is formed on the back surface of the fitting portion 10d as necessary.

As shown in FIG. 5, one small folding container C10 is placed on top of the large folding container C1 located below.
So that the short side 10b side of the bottom part 10 of the bottom part 10 straddles the opposing long side wall 2 of the large folding container C1 located below.
Further, when the bottom 10 of the small folding container C10 is placed such that one long side 10e side of the bottom 10 contacts the one short side wall 3 of the large folding container C1 positioned below, the bottom 10 of the small folding container C10 is placed. Short side 1
Recess 1 formed near both ends of the back surface located on the 0b side
0c, a small folding container C10 of a pair of fitting projections 2n protruding from a flange 2e of the long side wall 2 of the large folding container C1 is provided in a concave portion 10c located near the center of the large folding container C1. The fitting protrusion 2n located on the side of the short side wall 3 to be mounted is fitted. Similarly, another small foldable container C10 is placed so that two small foldable containers C10 can be placed on the large foldable container C1 at the lower position as shown in FIG. It is configured.

As described above, the small folding container C1 is placed on the large folding container C1 located below.
0, when the large folding container C1 is stacked on the bottom 10 of the small folding container C10, the recess 10c is formed near the both ends of the back surface located on the short side 10b side.
Fitting projection 2n protruding from flange 2e of long side wall 2
Are fitted so that the vicinity of the center of the long side wall 2 of the large folding container C1 located below is
The bottom 10 located near the center of the large foldable container C1 of the small foldable container C10 placed on the large foldable container C1 does not bulge outward, and the long side wall of the large foldable container C1 is long. 2 can be prevented from being inclined or falling into the large folding container C1, and the small folding container C10 can be stacked on the large folding container C1 in a stable state.

When the small foldable container C10 is stacked on the large foldable container C1 positioned below, the large foldable container C1 is inserted into the recess 10c formed in the bottom 10 of the small foldable container C10.
Is configured such that the fitting projection 2n protruding from the long side wall 2 is fitted to the small folding container C10 when one small folding container C10 is stacked on the large folding container C1. The container C10 does not move along the long side wall 2 of the large folding container C1 located below.

The outer surface of the long side wall 1 located near the vertical center line of the long side wall 2 of the large folding container C1 has
Since the vertical reinforcing rib 2p extending from the flange portion 2e to the lower horizontal rib 2f is formed and the long side wall 2 is reinforced, when the small folding container C10 is placed,
The long side wall 2 of the large folding container C1 is deformed,
Buckling or damage can be prevented.

As shown in FIG. 4 which is a rear perspective view of the large folding container C1, the long side 1b side of the bottom portion 1 of the large folding container C1 has a concave portion opened downward along the peripheral wall 1a. A groove 1c is formed, and rib ribs 1d are formed in the concave groove 1c at predetermined intervals. A fitting recess 1e is formed at the center of the concave groove 1c by a pair of adjacent partition ribs 1d 'located at the center of the long side 1b of the bottom 1. 1f is a long side wall 2 of the assembled large folding container C1 positioned below when the large folding containers C1 are stacked.
The above-mentioned fitting portion is formed on the back surface of the bottom portion 1 fitted to the notch step portion 2a and the notch step portion 3a of the short side wall 3 and extends beyond the lower end 1a 'of the peripheral wall 1a of the bottom portion 1. It is configured to extend downward. The short side 1 of the fitting portion 1f formed on the bottom 1 of the large folding container C1.
In the central area parallel to g, as shown in FIGS. 5 and 8, the large folding container C1 is placed on two small folding containers C10 arranged so that the long side walls 20 abut. A concave groove 1h into which the upper end portions of the long side walls 20 of the two small folding containers C10 abutted when stacked are formed. In addition, a cross rib 1f 'is formed on the back surface of the fitting portion 1f, if necessary.

When the large foldable containers C1 are stacked, the large foldable containers C1 located below are stacked.
2e located near the vertical center line of the long side wall 2
A pair of fitting protrusions 2n formed on the upper surface of the large-sized folding container C1 are configured to be fitted into fitting recesses 1e formed at the center of the long side 1b side of the bottom 1 of the large folding container C1 located at the top. The fitting projection 2n is configured so as not to hinder the work of stacking the large folding containers C1.

In the above-described embodiment, an example is shown in which two small folding containers C10 are stacked on the large folding container C1, but three small folding containers C10 are stacked on the large folding container C1. Can be stacked. In this case, the bottom 1 of the small folding container C10 arranged at the center is used.
0, two concave portions 10 formed at both ends on the short side 10b side.
c, the two fitting projections 2n described above are formed on the flange portion 2e of the large folding container C1 corresponding to the small folding container C10 arranged on both sides of the small folding container C10 arranged at the center. One fitting is provided for each of the flange portions 2e of the large folding container C1 corresponding to the recess 10c of the small folding container C10 arranged at the center among the two recesses 10c formed at both ends on the side 10b side. The convex portion 2n is formed. Even when four or more small folding containers C10 are stacked on the large folding container C1,
Similarly, an appropriate number of fitting projections 2n are formed at appropriate positions.

[0023]

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

On the lower folding container,
When stacking small folding containers having smaller bottoms, the fitting projections projecting from the long side walls of the folding containers are fitted into the recesses formed in the bottom of the small folding containers. As a result, the long side wall of the lower foldable container does not bulge outward, so that the small foldable container placed on the foldable container is inclined off the long side wall of the foldable container. The small folding container can be stacked on the folding container in a stable state by preventing the small folding container from dropping or falling into the folding container.

On the lower folding container,
When the small folding containers are stacked, the fitting projections projecting from the long side walls of the folding containers are configured to fit into the concave portions formed at the bottom of the small folding containers. When one small folding container is stacked on top of the above, the mold folding container does not move along the long side wall of the underlying folding container.

A vertical reinforcing rib extending from the flange to the lower horizontal rib is formed on the outer surface of the long side wall of the folding container near the vertical center line, and the long side wall is reinforced. When placed, the long side wall of the folding container can be prevented from being deformed or buckled and damaged.

[Brief description of the drawings]

FIG. 1 is a perspective view of a folding container according to the present invention.

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

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

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

FIG. 5 is a perspective view for explaining the stacking of the folding container of the present invention and two small folding containers.

FIG. 6 is a rear perspective view of a small folding container stacked on the folding container of the present invention.

FIG. 7 is a partially enlarged perspective view of the folding container of the present invention.

FIG. 8 is a perspective view of the folded container of the present invention and two small folded containers in a stacked state.

FIG. 9 is a perspective view for explaining stacking of a conventional folding container and two small folding containers.

[Explanation of symbols]

 C1: Large folding container C2: Large folding container 1. Bottom 2・ ・ ・ ・ ・ ・ ・ Long side wall 3 ・ ・ ・ ・ ・ ・ Short side wall 2n ・ ・ ・ Mating protrusion 2p ・ ・ ・ ・ ・ ・ ・ ・ ・..Vertical reinforcing rib 10c

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Toshitoshi Yamauchi 1-fourth Honda Honda, Hozumi-cho, Motosu-gun, Gifu Prefecture Inside Sanko Co., Ltd. (72) Inventor Yasuharu Nakajima 1-Toyota-cho, Toyota-shi, Aichi Prefecture Toyota Motor Corporation Company F term (reference) 3E006 AA03 BA01 CA01 DA03 DB05 3E061 AA05 CA02 DA01 DB11

Claims (2)

[Claims] 1. A small recess formed in a bottom surface of a small foldable container having a bottom portion smaller than the above foldable container located on the upper surface of the flange portion of the long side wall of the lower foldable container. Forming a possible mating projection, and when a small folding container is stacked on the lower folding container, the fitting formed on the upper surface of the flange portion of the long side wall of the lower folding container The convex portion is fitted into a concave portion formed on the bottom rear surface of the small folding container located above, so that the long side wall of the folding container located below is prevented from bulging outward. A folding container characterized by the above-mentioned. 2. The folding container according to claim 1, wherein a vertical reinforcing rib extending from the flange portion to the lower horizontal rib is formed on an outer surface located near a vertical center line of a long side wall of the folding container. .