JP2002234532A - Foldable container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a stopper on a spring-up side wall side from being damaged even in case when a stopper on an upper frame side contacts it by constructing the stopper on the spring-up side wall side constructing a spring-up side wall bend preventing means for preventing the spring-up side wall from being bended in a direction of an inner portion of a foldable container as a connecting plate member for connecting ribs. SOLUTION: A stopper on a spring-up side wall side is constructed as a spring-up side wall bend preventing means for preventing the spring-up side wall 3 from being bended in a direction of an inner portion of a foldable container as a connecting plate member 9 for connecting ribs 8, 10, 12 and 14 and a stopper on an upper frame side is constructed as a mating protrusion 5 arranged at a lower edge 1b1 of an inner vertical portion 1b of the upper frame 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a folding container used for storing, transporting or transporting various articles.

[0002]

2. Description of the Related Art Conventionally, one of four side walls arranged between a frame-shaped upper frame and a bottom portion is divided into upper and lower sides, and the divided side walls are connected by hinges and folded. Foldable containers are known which are constructed so as to be pivotable with the upper end of the other opposing side wall pivotally connected to the upper frame and configured to be pivotable upward. Rotating the side wall, the upper end of which is pivotally attached to the upper frame, from a substantially vertical state toward the inside of the folding container to a substantially horizontal state, and then folding the vertically divided side wall at a hinge portion. Thereby, the folding container assembled in a box shape can be folded in a compact state with a low height.

[0003] When folding a box-shaped folded container, as described above, first, an operator attaches the outer wall surface of the side wall, the upper end of which is pivotally attached to the upper frame, to the folded container. It is pressed inward and rotated from a substantially vertical state to a substantially horizontal state, but the lower end of the side wall of the folded container in a box-shaped state is simply the inside of the folded container. Since it is engaged with the bottom so as not to rotate in the direction, the outer wall surface of the side wall must be pressed strongly to release the engagement with the bottom. As described above, when the outer wall surface of the side wall is strongly pressed, the central portion of the side wall is bent in the inward direction of the folding container, and the pivotal state between the side wall and the upper frame is released, or the side wall and the upper frame are disengaged. There was a problem that the pivot member with the frame was damaged.

[0004] In order to solve the above-mentioned problem, a thin and long claw extending downward is vertically provided at the center of the upper frame, while a side wall whose upper end is pivotally attached to the upper frame has: A concave portion is formed in the upper central portion, and a horizontal axis is provided so as to bridge the concave portion, so that when the outer wall surface of the side wall is pressed toward the inside of the folding container, it is disposed on the side wall. 2. Description of the Related Art There is known a folding container in which a horizontal axis provided abuts a claw formed on an upper frame to prevent the side wall from being curved (for example, Japanese Patent Application Laid-Open No. H11-147525).

[0005]

In the above-mentioned conventional folding container, a horizontal axis bridging a concave portion formed in an upper central portion of a side wall whose upper end is pivotally connected to the upper frame, and a center of the upper frame. With the claw vertically provided on the part, the side wall is prevented from bending, but when the horizontal axis of the side wall contacts the claw of the upper frame, the horizontal axis and the claw are damaged. There was a problem.

[0006] Further, the side wall of which the upper end is pivotally attached to the upper frame has a concave portion formed in the upper central portion thereof, and a horizontal axis bridging the concave portion is formed. However, there has been a problem that the mold structure for performing the process is complicated and expensive.

Furthermore, since a thin and long nail is vertically provided at the center of the upper frame, a mold structure for molding such a nail becomes complicated, and burrs are formed on the nail. There is a problem that it is easy to occur, and when the goods stored in the folding container are taken in and out,
There has been a problem that the work may be caught by the above-mentioned claw, and the workability of taking the article in and out of the folding container may be reduced, and the article may be damaged.

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

[0009]

According to the present invention, in order to achieve the above-mentioned Hita object, an upper frame, a bottom, a flip-up side wall whose upper end is pivotally supported by the upper frame, and an upper frame are vertically divided. In the folding container including the divided side walls, first, a blocking member on the side of the flip-up side wall which constitutes a flip-up side wall bending prevention means for preventing the flip-up side wall from bending inwardly of the folding container is connected to a connecting plate connecting the ribs. In addition to being configured as a member, the upper frame side blocking member is configured as an abutting projection protruding from the lower end of the inner vertical portion of the upper frame. The abutment projection as a blocking member is formed at a position where the reinforcing rib is located. Thirdly, the abutment projection as a blocking member on the upper frame side is supplemented to a central portion. Ribs is obtained by forming a portion to be positioned.

[0010]

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.

[0011] The folding container is an upper frame 1
, The bottom 2, and the upper frame 1, the upper end of which is pivotally supported by a configuration described later and is configured to be rotatable in the inward direction of the folding container (hereinafter, this side wall is referred to as a “flip-up side wall”). ) 3 and side walls (hereinafter, referred to as “divided side walls”) 4 which are vertically divided and connected via an appropriate hinge 4a. The divided side wall 4 is composed of an upper divided side wall 4 ′ located above the hinge 4 a and a lower divided side wall 4 ″ located below the hinge 4 a, and an upper end of the upper divided side wall 4 ′. Is pivotally supported on the upper frame 1 via a suitable hinge, and the lower end of the lower divided side wall 4 "is pivotally supported on the bottom 2 via a suitable hinge.

The substantially vertical flip-up side wall 3 of the box-shaped foldable container shown in FIG. 1 is rotated toward the inside of the foldable container as shown in FIG. Then, the hinge 4a connecting the upper divided side wall 4 'and the lower divided side wall 4 "constituting the divided side wall 4 is moved in the inner direction of the folding container, and the upper divided side wall 4' and the lower divided side wall 4 'are moved. ", The box-shaped foldable container can be folded into a low-height compact state.

Next, with reference to FIGS. 3 to 5, a description will be given of the means for preventing the side wall 3 from being bent.

The upper frame 1 has a horizontal portion 1a and inner vertical portions 1 extending downward from both edges of the horizontal portion 1a.
b and an outer vertical portion 1c, and a cross-sectional shape perpendicular to the longitudinal direction is formed in a substantially inverted U-shape.

1d is formed at a predetermined interval in a space formed by the horizontal portion 1a, the inner vertical portion 1b, and the outer vertical portion 1c of the upper frame 1 on the side where the flip-up side wall 3 is pivotally supported. The lower part 1b1 of the inner vertical part 1b of the female rib 1d
A fitting hole 1d1 is formed.

Reference numeral 1e1 denotes a plate-shaped central reinforcing rib formed at the center of a space formed by the horizontal portion 1a, the inner vertical portion 1b, and the outer vertical portion 1c of the upper frame 1. An appropriate number of ribs 1e2 are formed at appropriate positions across the central reinforcing rib 1e1. The lower ends of the central reinforcing ribs 1e1 and 1e2 are
The upper frame 1 is configured not to protrude below the lower end 1b1 of the inner vertical portion 1b. In this embodiment, the center reinforcing rib 1e1 is sandwiched between the two.
Reinforcing ribs 1e2 are formed one by one, and a total of four reinforcing ribs 1e2 are shown.

Reference numeral 5 denotes an abutting projection protruding from a lower end 1b1 of the inner vertical portion 1b of the upper frame 1 where the central reinforcing rib 1e1 is located, and has a height of about 5 mm or less. The thickness of the abutment projection 5 is at least
It is preferable that the thickness is the same as the thickness of the inner vertical portion 1b of the upper frame 1 and larger than the thickness of the inner vertical portion 1b of the upper frame 1.

In the vicinity of both ends of the upper frame 1 on the side where the upper divided side wall 4 'is pivotally supported, there is formed a concave portion 6 having the inner vertical portion 1b of the upper frame 1 as the inner vertical wall 6a. A through hole 6b into which the pivot pin 7 can be fitted is formed in the vertical wall 6a.

In the central region of the upper horizontal flange 3a of the flip-up side wall 3, a vertical rib 8 having a semicircular plate-like upper portion and orthogonal to the longitudinal direction of the upper horizontal flange 3a is provided at an appropriate interval. Is erected. Also, a substantially inverted J-shape is formed so as to connect the outer ends of the vertical ribs 8 (portions located outside when the folding container is assembled in a box shape) from near the upper central part of the pair of vertical ribs 8. A central region connecting plate member 9 is formed. Reference numeral 10 denotes a pair of central ribs having the same shape as the vertical ribs 8 erected at the center of the upper horizontal flange 3a so as to form a gap having a predetermined width. The abutting projection 5 protruding from the lower end 1b1 of the inner vertical portion 1b of the upper frame 1 is configured to be located. Reference numeral 11 denotes a reinforcing rib having the same shape as the vertical rib 8 and formed adjacent to the vertical rib 8 and closer to the center of the side wall 3 to be flipped up than the vertical rib 8. The reinforcing rib 11 may be formed as needed. it can.

Reference numeral 12 denotes a fitting of the same shape as the vertical rib 8 erected on the side of the flip-up side wall 3 with respect to the vertical rib 8 erected on the upper horizontal flange 3a of the flip-up side wall 3 described above. A gap is formed between the vertical rib 8 and the fitting shaft support rib 12 so that the female rib 1d formed on the upper frame 1 can be inserted therein. Also, on the side wall surface of the fitting shaft support rib 12 on the vertical rib 8 side,
A fitting shaft 13 perpendicular to the side wall surface protrudes, and the distance between the tip of the fitting shaft 13 and the side wall surface of the vertical rib 8 is shorter than the thickness of the female rib 1 d formed on the upper frame 1. It is configured to be.

Numeral 14 denotes a side-side rib which stands upright from the fitting shaft supporting rib 12 near the side of the flip-up side wall 3 and has the same shape as the vertical rib 8. The shift rib 14 is connected to the end region connecting plate member 15 similar to the above-described substantially inverted J-shaped central region connecting plate member 9. Numeral 16 denotes end ribs having the same shape as the vertical ribs 8 formed by extending the side vertical ribs 3b of the flip-up side wall 3 upward. The side ribs 14 and the end ribs 1 are formed.
The cylindrical body 17 into which the above-mentioned pivot pin 7 can be fitted is cross-linked so as to connect the pivot pin 6 with the pivot pin 6.

To attach the flip-up side wall 3 to the upper frame 1, first, the female rib 1d formed on the upper frame 1 is placed between the vertical rib 8 of the flip-up side wall 3 and the fitting shaft support rib 12. The female rib 1d formed in the upper frame 1 is inserted into the formed gap, and the female rib 1d formed on the upper frame 1 has a gap smaller than the thickness of the female rib 1d. Tip of shaft 13 and vertical rib 8
And the fitting shaft 13 is
The female rib 1d formed in the upper frame 1 is inserted through a fitting hole 1d1. Next, the pivot pin 7 is connected to a through-hole 6b formed in the inner vertical wall 6a of the upper frame 1 and to a side cross-section rib 14 of the flip-up side wall 3 by connecting the end rib 16 to the cylinder. By being fitted into the body 17, the flip-up side wall 3 is pivotally supported on the upper frame 1. In this manner, when the flip-up side wall 3 is pivotally supported by the upper frame 1, the inner vertical portion 1b of the upper frame 1
Abutting projections 5 projecting from the lower end 1b1 are opposed to the distal end 9a of the substantially inverted J-shaped central region connecting plate member 9 located between the pair of central ribs 10 of the flip-up side wall 3. ing. The attachment of the upper divided side wall 4 'and the lower divided side wall 4 "constituting the divided side wall 4 to the upper frame 1 and the bottom portion 2 is known, and therefore detailed description thereof will be omitted.

When folding the folding container assembled in a box shape, as described above, the operator moves the outer wall surface of the flip-up side wall 3 whose upper end is pivotally attached to the upper frame 1 to the inside of the folding container. Direction, the flip-up side wall 3 is rotated from a substantially vertical state to a substantially horizontal state. When the flip-up side wall 3 is rotated upward, the center of the flip-up side wall 3 is Even when trying to bend inward, the distal end 9a of the substantially inverted J-shaped central region connecting plate member 9 located between the pair of central ribs 10 of the flip-up side wall 3 is positioned at the lower end 1b1 of the inner vertical portion 1b of the upper frame 1. Abuts against the abutting projections 5 provided on the upper frame 1 so that the center of the flip-up side wall 3 is prevented from bending inwardly of the folding container. From the fitting hole 1d1, that as the fitting shaft 13 protruding from the fitting shaft support rib 12 of the side wall 3 flip-up exits can be prevented. Also, the side wall 3
Of the folding container is prevented from being bent inward, so that the through-hole 6b formed in the deep vertical wall 6a of the upper frame 1 and the side-side rib 14 of the flip-up side wall 3 and the end rib 16 are connected. The bending of the pivot pin 7 fitted in the cylindrical body 17 cross-linked as described above can be prevented.

As described above, the blocking member on the side of the flip-up side wall 3 which constitutes the flip-up side wall bending prevention means for preventing the flip-up side wall 3 from bending inward of the folding container is the same as the above-mentioned conventional folding container. The central region connecting plate member 9 has a substantially inverted J-shape, not a horizontal axis that is easily broken.
Therefore, even if it comes into contact with the abutting projection 5 protruding from the lower end 1b1 of the inner vertical portion 1b of the upper frame 1, the central region connecting plate member 9 is not damaged.

The abutting projection 5 of the upper frame 1 which constitutes a side wall bending preventing means for preventing the side wall 3 from bending toward the inside of the folding container is formed as a thin and long claw as in the prior art. As a result, even if the central area connecting plate member 9 formed on the flip-up side wall 3 abuts, there is no damage, and furthermore, when the articles stored in the folding container are taken in and out, the articles are not removed. Also, it is possible to prevent the workability of the work of taking out and putting in the folding container from being caught by the abutment projection 5, thereby improving the workability of taking out and putting in the goods stored in the folding container.

Further, since the central rib 10 is formed on the central region connecting plate member 9 of the flip-up side wall 3 against which the abutment projection 5 of the upper frame 1 abuts, the abutment projection 5 of the upper frame 1 abuts. Since the central region connecting plate member 9 is reinforced, it is possible to prevent the central region connecting plate member 9 with which the abutment projection 5 of the upper frame 1 comes into contact from being damaged.

Furthermore, the abutment protrusion 5 of the upper frame 1
It is only necessary that the central area connecting plate member 9 of the flip-up side wall 3 has a protruding amount that is opposed to the center area connecting plate member 9, so that it is not necessary to be thin and long unlike a conventional claw. In addition to the above, it is possible to prevent burrs or the like from being generated on the abutment projection 5.

Still further, unlike the conventional folding container in which a concave portion is formed in the flip-up side wall and a horizontal axis is arranged so as to bridge the concave portion, the flip-up side wall bending preventing means does not have a complicated structure. Therefore, the mold structure is simplified, and therefore, the manufacturing cost of the mold can be reduced.

Furthermore, the abutment projection 5 of the upper frame 1
Are formed on the upper frame 1 where the central reinforcing rib 1e1 is located, so that when the central region connecting plate member 9 of the flip-up side wall 3 comes into contact with the abutment projection 5 of the upper frame 1, Does not curve inward of the folding container, and therefore, it is possible to reliably prevent the flip-up side wall 3 from bending inward of the folding container.

Further, an abutment projection 5 projecting from a lower end 1b1 of the inner vertical portion 1b of the upper frame 1 is located in a gap between a pair of central ribs 10 formed on the flip-up side wall 3. As a result, play in the direction along the upper frame 1 of the flip-up side wall 3 can be stopped. In this case, it is more reliable to make the abutment projection 5 formed on the upper frame 1 thicker (thickness in a direction perpendicular to the inner vertical portion 1b) than the inner vertical portion 1b. Play can be prevented.

In the embodiment described above, an example is shown in which one abutment projection 5 formed on the upper frame 1 is provided, but such a plurality of abutment projections 5 is provided. It can be protruded individually. For example, 1 in the center of the upper frame 1
A total of three abutment projections 5 can be provided, one each, with the abutment projection 5 provided at the center interposed therebetween, or the abutment projection 5 located at the center can be provided. Is omitted and 2
A plurality of abutment projections 5 can also be provided. In the above-described embodiment, the abutment protrusion 5 formed on the upper frame 1 is provided.
Although an example is shown in which the projection is provided at the center of the upper frame 1, it is not necessarily limited to the center, and the vicinity of both ends of the upper frame 1 where the flip-up side wall 3 is provided is shown. It can also be protruded.

[0032]

Since the present invention is configured as described above, it has the following effects.

[0033] Since the blocking member on the side of the flip-up wall which constitutes the flip-up side wall bending prevention means for preventing the flip-up side wall from bending inwardly of the folding container is formed as a connecting plate member for connecting the ribs, the side of the upper frame is not provided. Even if the blocking member abuts, the blocking member on the side of the flip-up side wall is not damaged.

[0034] Since the upper frame side blocking member constituting the flip-up side wall curb-preventing means for preventing the flip-up side wall from bending inwardly of the folding container is formed on the upper frame where the reinforcing rib is located, the flip-up side wall side is formed. The upper frame does not bend inward of the folding container when the blocking member of the above abuts against the blocking member on the upper frame side. Can be prevented from being curved.

An upper frame-side blocking member, which constitutes a flip-up side wall bending prevention means for preventing the flip-up side wall from bending inwardly of the folding container, is an abutting projection projecting from a lower end of an inner vertical portion of the upper frame. Because it is configured, it is not formed as thin and long as the claws of the conventional folding container, so that it is possible to prevent damage of the abutment projection and to generate burrs on the abutment projection. Absent.

Since the abutment projection as the blocking member on the upper frame side is formed at the position where the central reinforcing rib is located, the flip-up side wall of the flip-up container can be more securely and effectively directed toward the inside of the folding container. Can be prevented.

[Brief description of the drawings]

FIG. 1 is a perspective view of a folding container according to the present invention 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 an exploded perspective view of a part of an upper frame and a flip-up side wall of the folding container according to the present invention.

FIG. 4 is a partial perspective view of the folding container according to the present invention in which an upper frame and a flip-up side wall are connected.

FIG. 5 is a partial vertical cross-sectional view of the upper frame of the folding container according to the present invention, which is perpendicular to the flip-up side wall at the center of the flip-up side wall.

[Explanation of symbols]

 1 ... top frame 2 ... bottom 3 ... flip-up side wall 4 ... divided side wall 5 ... ..Abutment projections 9 ... Central area connecting plate members

Claims (3)

[Claims] 1. A folding container comprising an upper frame, a bottom, a flip-up side wall whose upper end is pivotally supported by the upper frame, and a divided side wall divided vertically.
A blocking member on the side of the flip-up wall, which constitutes a flip-up side wall blocking portion for preventing the flip-up side wall from bending inward of the folding container, is configured as a connecting plate member for connecting the ribs, and a blocking member on the upper frame side. Is formed as an abutting projection projecting from a lower end of an inner vertical portion of the upper frame. 2. The folding container according to claim 1, wherein an abutment projection as a blocking member on the upper frame side is formed at a position where the reinforcing rib is located. 3. The folding container according to claim 2, wherein an abutment projection as a blocking member on the upper frame side is formed at a position where the central reinforcing rib is located.