JP4160543B2 - Folding container - Google Patents

Description

The present invention relates to a folding container that can be folded so that a side wall disposed so as to surround the bottom portion overlaps the bottom portion.

Conventionally, it is connected to the opposing long side part of the bottom part formed in a substantially rectangular plane shape via a hinge member and can be tilted only in the bottom part direction from a substantially vertical state Similarly to the side wall, it is connected to the opposite short side portion of the bottom portion via a hinge member, and can be tilted in the bottom direction and the direction opposite to the bottom portion from a substantially vertical state. Folding containers consisting of side walls are known.

Then, from the state assembled in the box shape, the opposed short side walls in the substantially vertical state are brought down so as to overlap the bottom, and then the opposed long side walls in the substantially vertical state are brought down so as to be overlapped with the bottom. The long side wall and the short side wall are locked to each other by a locking mechanism so that they do not fall in the bottom direction when assembled in a box shape. Yes.

Moreover, in the state assembled in the box shape, by releasing the locked state of one short side wall and the long side wall among the opposing short side walls, the one short side wall is tilted in the direction opposite to the bottom, One short side wall side of the folding container assembled in a box shape is opened, and an article can be taken out from the folding container assembled in a box shape.

A folding container having the above-described configuration is disclosed in Patent Document 1 as an example.
JP 2004-168396 A

In the conventional folding container, in order to tilt one of the opposing short side walls in the direction opposite to the bottom, the operation member disposed on the short side wall is moved to the unlocking position, The long side wall is unlocked, and then one short side wall is tilted in the direction opposite to the bottom. However, in the above unlocking position, one short side wall may be tilted in the bottom direction. As a result, an operator accidentally tilts one short side wall toward the bottom and damages an article stored in a folding container assembled in a box shape, or a short side wall that collides with an article is damaged. There was a problem.

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

In order to achieve the above-described object, the present invention first tilts one opposing side wall in the bottom direction from the state assembled in a box shape, and then tilts the other opposing side wall in the bottom direction later. In the folding container which can be folded by the above-mentioned and can be tilted in the opposite direction to the bottom, the first side wall which is tilted in the bottom direction first. As a result of the upward movement of the lock male member disposed on the side wall, the side wall that is tilted toward the bottom is tilted to only one of the bottom direction or the direction opposite to the bottom, and is tilted to the bottom toward the bottom. When the lock male member disposed on the side wall is moved downward, the side wall that is tilted first in the bottom direction is tilted in the direction opposite to the tilting direction. Second, the lock Vertical movement of male member Further, the locking male member locking member disposed on the side wall that is tilted in the bottom direction earlier is the corner vertical part or the inner vertical part of the lock female member formed on the side wall that is tilted in the bottom direction later. Thirdly, it is configured so as to be selectively brought into contact with either one, and thirdly, a locking projection protruding from the locking member of the lock male member in a state assembled in a box shape However, the lock female member is configured to come into contact with the engaging protrusions of the vertical corner portion and the engaging protrusions of the inner vertical portion constituting the lock female member.

As a result of the upward movement of the lock male member disposed on the side wall that is tilted first in the bottom direction, the side wall that is tilted first in the bottom direction is tilted to only one of the bottom direction or the direction opposite to the bottom. Since the lock male member disposed on the side wall tilted in the bottom direction is moved downward, the side wall first tilted in the bottom direction is tilted in the direction opposite to the tilt direction. When the side wall that is tilted to the end of the folding container is tilted to the opposite side to the bottom to form the open part, the operator accidentally tilts the side wall that is tilted first toward the bottom and folds the box assembling. Problems such as damaging an article stored in a container or damaging a short side wall colliding with the article can be solved.

The lock male member engaging member of the lock male member disposed on the side wall that is tilted in the bottom direction first by the vertical movement of the lock male member is formed on the side wall that is tilted in the bottom direction from the rear. Alternatively, since it is configured to selectively abut against either one of the inner vertical portions, the side wall that is tilted in the bottom direction first is surely selectively placed in the bottom direction or in the direction opposite to the bottom portion. Can tilt.

In the state assembled in the box shape, the locking protrusions protruding from the locking members of the lock male member are the locking protrusions of the corner vertical portion and the inner vertical portion constituting the lock female member. Since the side wall that is tilted in the bottom direction from the rear turns outward, the male hinge member that is formed on the side wall that is tilted in the bottom direction from the rear, the female hinge member that is formed on the bottom, It is possible to prevent the bottom long bank portion or the like from being damaged.

Hereinafter, examples of the present invention will be described. However, the present invention is not limited to these examples as long as the gist of the present invention is not exceeded.

As shown in FIG. 1, the overall configuration of the present invention is hinged to a bottom 1 having long side banks 1 a formed along the long side and a long side bank 1 a of the bottom 1. It comprises a long side wall 2 and a short side wall 3 hinged to the short side of the bottom 1 via a biaxial rotation mechanism described later.

First, the bottom 1 will be described with reference to FIGS.

The bottom portion 1 has a bottom plate 1b having a rectangular planar shape. On the back surface of the bottom plate 1b, a plurality of ribs 1c1 along the long side of the bottom plate 1b and a plurality of ribs 1c2 along the short side of the bottom plate 1b. Thus, a bottom fitting portion 1c is formed. When folding containers assembled in a box shape are stacked in the vertical direction, the bottom fitting portion 1c formed on the bottom 1 of the folding container located on the upper side is located at the upper opening of the folding container located on the bottom. It is comprised so that it may be fitted.

The long side bank portion 1a includes an inner vertical portion 1a1 extending substantially vertically upward from an edge portion of the bottom plate 1b of the bottom portion 1, and a horizontal portion 1a2 extending substantially horizontally outward from the upper end of the inner vertical portion 1a1. The outer vertical portion 1a3 extends downward from the edge of the horizontal portion 1a2 substantially parallel to the inner vertical portion 1a1, and the cross-sectional shape perpendicular to the longitudinal direction is formed in a substantially inverted U shape. Has been.

Both ends of the long side bank portion 1a do not have the substantially inverted U-shaped cross-sectional shape as described above, the outer vertical portion 1a3 is omitted, and the substantially inverted U-shaped cross-sectional shape is omitted. Both side portions of the long side bank portion 1a are closed by a substantially vertical closed side plate portion 1a4. Both end portions of the long side bank portion 1a are formed of an inner vertical portion 1a1 and a horizontal portion 1a2 with the outer vertical portion 1a3 omitted, and a cross-sectional shape perpendicular to the longitudinal direction of the long side bank portion 1a. However, it is formed in a substantially inverted L shape. In addition, both ends of the long side bank portion 1a formed in a substantially inverted L shape are hereinafter referred to as a substantially inverted L shape end region, denoted by 1a ', and a cross section of the long side bank portion 1a. The region having a substantially inverted U shape is hereinafter referred to as a substantially inverted U-shaped end region, and is denoted by 1a ″.

The end of the inner vertical portion 1a1 and the end of the horizontal portion 1a2 constituting the substantially inverted L-shaped end region 1a 'are connected by a substantially vertical end side plate 1a5. Further, the substantially central portion of the closing side plate portion 1a4, the substantially central portion of the end portion side plate 1a5, and the substantially central portion of the inner vertical portion 1a1 are connected by a horizontal bridging horizontal plate 1a6 for reinforcement, and further substantially reversed. On the upper surface of the horizontal portion 1a2 constituting the L-shaped end region 1a ', a fitting recess 1a7 is formed by expanding the horizontal portion 1a2 downward. Furthermore, the lower end of the closing side plate portion 1a4 and the lower end of the end portion side plate 1a5 are connected by a substantially horizontal lower end plate 1a8, and the lower end plate 1a8 is bulged downward on the lower surface of the lower end plate 1a8, A fitting convex portion 1a9 is formed that is located almost directly below the fitting concave portion 1a7.

Notch recesses 1d are formed at predetermined intervals in the vicinity of both ends of the vertical side end wall 1b1 suspended from the short side of the bottom plate 1b of the bottom part 1. The notch recess 1d is formed on the back wall. 1d1 and a side wall 1d2 opposite to each other, and a shaft insertion hole 1d3 is formed in one side wall 1d2 located on the substantially inverted L-shaped end region 1a ′ side. A similar shaft insertion hole 1a10 is also formed in the inner vertical portion 1a1 constituting the substantially inverted L-shaped end region 1a 'corresponding to the shaft insertion hole 1d3. Further, a step 1b2 is formed along the short side of the bottom plate 1b at a corner formed by the bottom plate 1b and the vertical side end wall 1b1.

Next, with reference to FIGS. 3, 4, 6, and 7, the female hinge member H <b> 1 disposed in the substantially inverted U-shaped end region 1 a ″ constituting the long side bank portion 1 a of the bottom portion 1. Will be described.

A vertical hole h1 having a rectangular planar shape is formed in the horizontal portion 1a2 of the long side bank portion 1a. Further, the inner vertical portion 1a1 of the long side bank portion 1a is formed with a notch recess h2 that is open at the top and extends in the direction of the bottom plate 1c.

A hook h3 protrudes from the upper end portion of the inner surface of the inner vertical portion 1a1 (surface located on the outer vertical portion 1a3 side) located on both sides of the notch recess h2, and the hook h3 is a long side bank portion. An upper inclined surface h3a that is inclined so as to gradually approach the outer vertical portion 1a3 from the horizontal portion 1a2 toward the outer vertical portion 1a3 and a substantially horizontal flange portion h3b.

The female hinge member H1 is comprised by the vertical hole h1, the notch recessed part h2, and the hook h3 which were formed in the long side bank part 1a mentioned above.

Next, the long side wall 2 and the male hinge member H2 disposed on the long side wall 2 will be described with reference to FIG. 1, FIG. 3, FIG. 8, and FIG.

The long side wall 2 has a substantially horizontally long rectangular plate-like portion 2a and an outer surface of the plate-like portion 2a from the upper end of the plate-like portion 2a (a surface located outside when the folding container is assembled into a box shape) 2a1. The upper end horizontal flange 2b extending so as to protrude from the lower end, the lower end horizontal flange 2c extending from the lower end of the plate-like portion 2a so as to protrude from the outer surface 2a1 of the plate-like portion 2a, and both ends of the upper end horizontal flange 2b It has opposite end vertical flanges 2d that connect both ends of the lower end horizontal flange 2c.

At the upper corner of the plate-like portion 2a, both end portions of the upper horizontal flange 2b are arranged in a direction protruding from the inner surface 2a2 of the plate-like portion 2a (the surface located inside when the folding container is assembled into a box shape). A plate-like corner horizontal portion 2e formed by extending is formed, and the upper end portion of the end vertical flange 2d extends in a direction protruding from the inner surface 2a2 of the plate-like portion 2a. The plate-shaped corner | angular part vertical part 2f formed by these is formed, and the outer side edge part of the corner | angular part horizontal part 2e and the upper end part of the corner | angular part vertical part 2f are connected. Further, on the inner surface 2a2 of the plate-like portion 2a, a plate-like inner vertical portion 2g that is spaced apart from the corner vertical portion 2f and substantially parallel to the corner vertical portion 2f is formed from the upper end horizontal flange 2b. It is formed to hang down.

An outer locking projection 2f1 extending in the direction of the inner vertical portion 2g and substantially parallel to the plate-like portion 2a is formed at the edge of the substantially central portion of the corner vertical portion 2f. An inner locking projection that extends in the direction of the outer locking projection 2f1 and is substantially parallel to the plate-like portion 2a so as to face the outer locking projection 2f1 at the edge of the substantially central portion of 2g. 2g1 is formed. The substantially square-shaped through-hole 2h formed in the plate-like portion 2a surrounded by the corner horizontal portion 2e, the corner vertical portion 2f, and the inner vertical portion 2g is a gold used for integrally molding the long side wall 2. This is a hole in the mold.

At the upper end of the inner vertical portion 2g, a notch recess 2i is formed by cutting out the upper end of the inner vertical portion 2g, and at the lower end of the corner vertical portion 2f, the corner vertical portion A corner notch 2j is formed by notching the lower end of 2f. A fitting recess 2k is formed in the vicinity of both ends of the upper end horizontal flange 2b by expanding the upper end horizontal flange 2b downward, and the fitting recess 2k is the lower end plate 1a8 of the bottom 1 described above. It is comprised so that it may be located just above the fitting convex part 1a9 formed in this. Further, fitting convex portions 2m are formed at both ends of the lower end horizontal flange 2c by bulging the lower end horizontal flange 2c downward, and the fitting convex portion 2m makes the long side wall 2 substantially vertical. When it stands, it is configured to be fitted into a fitting recess 1a7 formed in a substantially inverted L-shaped end region 1a 'of the bottom portion 1.

A lock female member L is formed at the upper end corners of the long side wall 2 by the corner horizontal part 2e, the corner vertical part 2f, the inner vertical part 2g, the notch recess 2i, and the corner notch part 2j. ing.

A male hinge member H2 is formed on the back surface of the lower end horizontal flange 2c of the long side wall 2. The male hinge member H2 has a plate-like support piece h10 that is provided on the back surface of the lower horizontal flange 2c at a predetermined interval and perpendicular to the longitudinal direction of the lower horizontal flange 2c. The pair of support pieces h10 are connected by a connecting piece h11. The width between the outer surfaces of the pair of support pieces h10 (the surface opposite to the surface facing the pair of support pieces h10) is slightly narrower than the lateral width of the notch recess h2, and the pair of support pieces h10 is configured to be insertable into the notch recess h2. Also, a hinge block h12 is attached to the lower end of the outer side surface of the pair of support pieces h10, and the surface (hereinafter referred to as the upper surface) h12a facing the lower end horizontal flange 2c of the hinge block h12 is the lower end horizontal. It is formed as a flat surface substantially parallel to the flange 2c, and an abutting block h12b having a substantially rectangular parallelepiped shape protrudes from an end portion of the upper surface h12a located on the plate-like portion 2a side. And the male hinge member H2 formed in the back surface of the lower end horizontal flange 2c of the long side wall 2 is comprised so that it can insert in the vertical hole h1 formed in the long side bank part 1a which forms the female hinge member H1. ing.

The pair of supporting pieces h10, the connecting piece h11, and the hinge block h12 having the contact block portion h12b constitute a male hinge member H2.

In order to hinge-connect the bottom 1 and the long side wall 2, as shown in FIG. 6, the long side wall 2 is arranged in a substantially horizontal state so as to be substantially parallel to the bottom 1, and then the state is maintained. The long side wall 2 is moved downward toward the bottom 1 while maintaining the above-mentioned, and the support piece h10 on which the hinge block h12 formed on the long side wall 2 is projected is cut off on the long side bank portion 1a. When the hinge block h12 is inserted into the notched recess h2 and the hinge block h12 is inserted into the vertical hole h1 formed in the long side bank portion 1a, the hinge block h12 has the long side of the bottom portion 1 as shown in FIG. It is placed on the upper inclined surface h3a of the hook h3 protruding from the inner surface of the inner vertical portion 1a1 that forms the side bank portion 1a. After that, when the long side wall 2 is forcibly lowered toward the bottom 1 while maintaining the substantially horizontal state of the long side wall 2 and the bottom 1, the hinge block h <b> 12 is attached to the long side bank portion 1 a. The inner vertical portion 1a1 and / or the outer vertical portion 1a3 are curved and deformed, and the outer vertical portion 1a3 of the long side bank portion 1a formed on the bottom portion 1 and the hook h3 protruding from the inner surface of the inner vertical portion 1a1 By extending the gap between them, it passes between the outer vertical portion 1a3 and the hook h3 projecting from the inner surface of the inner vertical portion 1a1, and as shown in FIG. 4, the length formed in the bottom portion 1 It arrange | positions between the outer side perpendicular | vertical part 1a3 and the inner side perpendicular | vertical part 1a1 of the side bank part 1a. In this way, the female hinge member H1 disposed on the long side bank portion 1a of the bottom portion 1 and the male hinge member H2 disposed on the long side wall 2 are hinge-connected.

When the substantially horizontal long side wall 2 is stood substantially vertically from the folded state of the folding container, a contact block portion h12b of the hinge block h12 is formed on the bottom portion 1 as shown in FIG. The bottom side horizontal flange 2c of the long side wall 2 extends horizontally below the flange h3b of the hook h3 protruding from the inner vertical portion 1a1 of the long side bank portion 1a. It will be placed on the part 1a2. The contact block portion h12b of the hinge block h12 that has entered under the hook portion h3b of the hook h3 is configured to contact the hook portion h3b of the hook h3 or take a position close to the hook portion h3b. Therefore, in a state where the folding container is assembled in a box shape, the long side wall 2 does not rattle in the vertical direction.

Next, the short side wall 3 will be described with reference to FIGS.

The short side wall 3 has a horizontally long and substantially rectangular plate-like portion 3a. From the upper end of the plate-like portion 3a, the outer surface of the plate-like portion 3a (when the folding container is assembled into a box shape, the short side wall 3 is located outside. A top horizontal flange 3b extending so as to protrude from 3a1, a bottom horizontal flange 3c extending from the lower end of the plate-like portion 3a so as to protrude from the outer surface 3a1 of the plate-like portion 3a, and a plate-like portion 3d, and opposite end vertical flanges 3d extending so as to protrude from the outer surface 3a1 of the plate-like portion 3a.

Both ends of the upper end horizontal flange 3b do not reach the end vertical flange 3d, and the upper end of the end vertical flange 3d does not reach the upper end horizontal flange 3b, and the lower end of the end vertical flange 3d is the lower end. It is connected with the both ends of the horizontal flange 3c. A plate-like end horizontal portion 3e extending in the center direction of the plate-like portion 3a is formed at the upper end of the end portion vertical flange 3d.

An upper horizontal flange 3f is formed on the outer surface 3a1 of the plate-like portion 3a located below the upper end horizontal flange 3b at a predetermined distance from the upper end horizontal flange 3b. And the vicinity of both ends at the tip of the upper horizontal flange 3f are connected by strip-like connecting vertical ribs 3g parallel to the plate-like part 3a. Further, a lock male member insertion through hole 3h is formed in a region surrounded by the outer surface 3a1, the upper end horizontal flange 3b, the end horizontal portion 3e, and the connecting vertical rib 3g of the plate-like portion 3a. Furthermore, the upper horizontal flange 3b and the upper horizontal flange 3f are connected by a vertical guide rib 3i. The height of the plate-like portion 3a of the vertical guide rib 3i from the outer surface 3a1 is the same as that of the upper horizontal flange 3b or the upper horizontal flange 3g. It is formed lower than the height from the outer surface 3a1 of the plate-like portion 3a. In this embodiment, two vertical guide ribs 3i are formed at a predetermined interval.

A pair of substantially cylindrical bearing portions 3j are vertically suspended in the vicinity of both end portions of the back surface of the lower end horizontal flange 3c of the short side wall 3. That is, a pair of bearing portions 3j are vertically suspended at a predetermined interval in the vicinity of one end portion on the back surface of the lower end horizontal flange 3c, and the other end portion on the back surface of the lower end horizontal flange 3c. In the vicinity, a pair of bearing portions 3j is provided vertically with a predetermined interval.

A notch recess 3c1 is formed at the center of the tip of the lower end horizontal flange 3c. Further, the lower horizontal flange 3c and the upper horizontal flange 3g are appropriately connected by a vertical rib 3k as necessary. Further, by extending the plate-like portion 3a downward beyond the lower end horizontal flange 3c at the corner formed by the bearing portion 3j and the lower end horizontal flange 3c located on the center side of the lower end horizontal flange 3c. A horizontally elongated belt-like protruding rib 3m is formed.

Next, the connection member 4 which connects the bottom part 1 and the short side wall 3 is demonstrated using FIGS.

The connecting member 4 protrudes from the laterally long plate-like plate-like portion 4a and the outer surface of the plate-like portion 4a (the surface located outside when the folding container is assembled into a box shape) 4a1 from the upper end of the plate-like portion 4a. The upper end flange 4b extends so as to extend from the lower end of the plate-like portion 4a, and the lower end horizontal flange 4c extends so as to protrude from the outer surface 4a1 of the plate-like portion 4a.

The upper end flange 4b extends outward from both ends of the central horizontal portion 4b1 and the central horizontal portion 4b1, and extends outward from the end of the intermediate horizontal portion 4b2 and the intermediate horizontal portion 4b2 that is one step lower than the central horizontal portion 4b1. It extends and is formed from an end horizontal portion 4b3 that is one step lower than the intermediate horizontal portion 4b2. Both ends of the central horizontal portion 4b1 and both ends of the intermediate horizontal portion 4b2 on the side of the central horizontal portion 4b1 are connected by a plate-like inner vertical portion 4b4 reaching the lower end horizontal flange 4c, and an end portion of the intermediate horizontal portion 4b2 The end on the horizontal portion 4b3 side and the end on the intermediate horizontal portion 4b2 side of the end horizontal portion 4b3 are connected by a plate-like intermediate vertical portion 4b5 reaching the lower end horizontal flange 4c, and further, the end horizontal portion The edge part of 4b3 and the both ends of the lower end horizontal flange 4c are connected by the plate-like edge part perpendicular | vertical part 4b6.

A pair of substantially cylindrical upper bearing portions 4d are provided at predetermined intervals in the vicinity of the end portion and the central portion of the upper surface of the end horizontal portion 4b3 constituting the upper end flange 4b arranged on both sides. Has been. Also, a substantially cylindrical lower bearing portion 4e is provided in the vicinity of both ends of the back surface of the lower end horizontal flange 4c. That is, two lower bearing portions 4e are suspended from the back surface of the lower end horizontal flange 4c.

On the upper surface far from the plate-like portion 4a of the central horizontal portion 4b1 constituting the upper end flange 4b, a horizontally long belt-like projecting block 4f is projected over substantially the entire length in the width direction of the central horizontal portion 4b1. Further, on the upper surface of the belt-like protruding block 4f, a fitting projection 4g having a substantially reverse L-shaped side surface is erected, and the fitting protrusion 4g is erected from the upper surface of the belt-like protruding block 4f. The horizontally long vertical portion 4g1 and the horizontal portion 4g2 extending from the upper end of the vertical portion 4g1 in the direction of the plate-like portion 4a. The vertical portion 4g1 of the fitting projection 4g is a cut formed at the central portion of the lower end horizontal flange 3c of the short side wall 3 as shown in FIG. 26 and the like when the folding container is assembled in a box shape. The horizontal portion 4g2 of the fitting projection 4g is configured to be in contact with or close to the upper surface of the lower end horizontal flange 3c of the short side wall 3 while being fitted into the notch recess 3c1. Further, on the back surface of the lower end horizontal flange 4c, a plate-like portion 4a extends downward beyond the lower end horizontal flange 4c, whereby a horizontally long belt-like protruding rib 4h is suspended. Reference numeral 4i denotes a through-hole formed at a predetermined interval in a corner formed by the vertical portion 4g1 and the horizontal portion 4g2 of the fitting protrusion 4g.

Next, a means for hinge-connecting the short side wall 3 to the short side of the bottom 1 via the connecting member 4 will be described mainly with reference to FIG.

In the gap between a pair of substantially cylindrical bearing portions 3j provided near both ends of the back surface of the lower end horizontal flange 3c of the short side wall 3, on the upper surface of the end horizontal portion 4b3 constituting the upper end flange 4b of the connecting member 4. The pair of upper bearing portions 4d that are close to the intermediate horizontal portion 4b2 of the pair of upper bearing portions 4d that are erected and are fitted on the upper surface of the end portion horizontal portion 4b3 of the connecting member 4 The bearing portion 3j located outside the pair of substantially cylindrical bearing portions 3j provided on the back surface of the lower end horizontal flange 3c of the short side wall 3 is fitted into the gap 4d. Thereafter, a pair of substantially cylindrical bearing portions 3j suspended from the back surface of the lower end horizontal flange 3c of the short side wall 3, and a pair of upper bearing portions 4d erected on the upper surface of the end horizontal portion 4b3 of the connecting member 4; In addition, the short side wall 3 and the connecting member 4 are hinge-connected by inserting the connecting pin p1. In this way, the pair of substantially cylindrical bearing portions 3j suspended near both ends of the back surface of the lower end horizontal flange 3c of the short side wall 3, the upper bearing portion 4d of the connecting member 4, and the connecting pin p1 are connected. An upper rotation axis centering on the axis of the pin p1 is formed.

Further, the lower bearing portion 4e suspended from the back surface of the lower end horizontal flange 4c of the connecting member 4 is inserted into the notch recesses 1d formed in the vicinity of both ends of the short side of the bottom portion 1 and formed on the bottom portion 1. The shaft insertion hole 1d3 formed in one side wall 1d2 constituting the notched recess 1d and the shaft insertion hole formed in the inner vertical portion 1a1 constituting the substantially inverted L-shaped end region 1a ′ of the bottom 1 The bottom 1 and the connecting member 4 are hingedly connected by inserting the connecting pin p2 into 1a10 and the lower bearing portion 4e inserted into the notch recess 1d. In this manner, the shaft insertion drilled in one side wall 1d2b constituting the lower bearing portion 4e suspended from the back surface of the lower end horizontal flange 4c of the connecting member 4 and the notch recess 1d formed in the bottom portion 1 is performed. With the hole 1d3, the shaft insertion hole 1a10 drilled in the inner vertical portion 1a1 constituting the substantially inverted L-shaped end region 1a 'of the bottom 1, and the connection pin p2, the axis of the connection pin p2 is centered. A lower rotating shaft is formed.

As described above, the short side wall 3 is hingedly connected to the bottom 1 via the connecting member 4.

When the short side wall 3 in a substantially vertical state is tilted in the direction of the bottom 1 like the short side wall 3 located on the left side of FIG. 15 from the state assembled in the box shape shown in FIG. 3 is centered on the axial center of the connecting pin p1 connected to the pair of substantially cylindrical bearing portions 3j suspended from the back surface of the lower horizontal flange 3c of the short side wall 3 and the upper bearing portion 4d of the connecting member 4. It is rotated in the direction of the bottom 1 around the upper rotation axis. Further, when the substantially vertical short side wall 3 is tilted in the opposite direction to the bottom 1 like the short side wall 3 located on the right side of FIG. 15, the short side wall 3 is suspended from the back surface of the lower horizontal flange 4c of the connecting member 4 described above. A lower bearing portion 4e provided, a shaft insertion hole 1d3 formed in one side wall 1d2b constituting a notch recess 1d formed in the bottom portion 1, and a substantially inverted L-shaped end region 1a ′ of the bottom portion 1. It is inserted into the shaft insertion hole 1a10 formed in the inner vertical portion 1a1 forming the inner portion, and tilted outward with the lower rotation shaft centering on the shaft center of the connecting pin p2 connecting the connecting member 4 and the bottom portion 1 as the center. Will be.

As described above, the short side wall 3 is hingedly connected to the bottom 1 via the connecting member 4 by the above-described biaxial rotating mechanism of the upper rotating shaft and the lower rotating shaft.

When the substantially vertical short side wall 3 is tilted in the direction opposite to the bottom 1 from the assembled state in the box shape, the lower end horizontal flange 4c of the connecting member 4 is as shown in FIG. The strip-shaped protruding rib 4h is configured to come into surface contact with the vertical side end wall 1b1 suspended from the short side of the bottom plate 1b of the bottom portion 1 and suspended from the back surface of the lower end horizontal flange 4c of the connecting member 4. Is fitted to a step 1b2 formed along the short side of the bottom plate 1b of the bottom portion 1 and is located on the inner surface of the plate-like portion 4a of the connecting member 4 (when the folding container is assembled in a box shape, Surface) 4a2 and the upper surface of the bottom plate 1b of the bottom portion 1 are substantially flush with each other. Moreover, the front-end | tip part of the lower end horizontal flange 3c of the short side wall 3 is the vertical part 4g1, the horizontal part 4g2, and the strip | belt-shaped protrusion block 4f which comprise the fitting protrusion part 4g of the connection member 4, as FIG. 16 shows. The inner surface 4a2 of the plate-like portion 4a of the connecting member 4 and the inner surface 3a2 of the plate-like portion 3a of the short side wall 3 are substantially flush with each other. It is configured as follows. Therefore, when the short side wall 3 in a substantially vertical state is tilted in the direction opposite to the bottom 1 as shown in FIG. 16 from the state assembled in a box shape, the top surface of the bottom plate 1b of the bottom 1 is The inner surface 4a2 of the plate-like portion 4a of the connecting member 4 and the inner surface 3a2 of the plate-like portion 3a of the short side wall 3 are configured to be substantially flush with each other.

When one short side wall 3 is tilted to the opposite side to the bottom 1 from the state assembled in the box shape, as described above, the upper surface of the bottom plate 1b of the bottom 1 and the plate-like portion 4a of the connecting member 4 The inner surface 4a2 and the inner surface 3a2 of the plate-like portion 3a of the short side wall 3 are formed substantially flush with each other, the upper surface of the bottom plate 1b of the bottom portion 1, the inner surface 4a2 of the plate-like portion 4a of the connecting member 4, and the plate-like portion of the short side wall 3 Since no step or protrusion is formed on the inner surface 3a2 of 3a, as shown in FIG. 17, one short side wall 3 of the folding container assembled in a box shape is opposite to the bottom 1 When taking out the article A while sliding the upper surface of the bottom plate 1b of the bottom part 1 from the open part formed by being tilted, the article A comes into contact with the above steps or protrusions and is assembled into the box shape of the article A. Do not disturb the smooth removal from the folded container. .

Next, the lock male member 5 integrally formed of a synthetic resin disposed on the short side wall 3 will be described with reference to FIGS.

The lock male member 5 includes an upper horizontal portion 5a1, a lower horizontal portion 5a2, an opposite side vertical portion 5a3 connecting both ends of the upper horizontal portion 5a1 and both ends of the lower horizontal portion 5a2, an upper horizontal portion 5a1 and a lower horizontal portion. It has a box-shaped main body 5a formed by a back plate 5a4 that closes one opening of a frame-like frame formed by a portion 5a2 and a pair of side vertical portions 5a3. A pair of vertical guide grooves 5b formed by denting the back plate 5a4 forward is formed.

Box-shaped arm portions 5c that are substantially perpendicular to the side vertical portions 5a3 are extended from the opposing side vertical portions 5a3 constituting the box-shaped main body 5a. The arm portion 5c includes an upper horizontal portion 5c1, a lower horizontal portion 5c2, a side vertical portion 5c3 connecting the tip of the upper horizontal portion 5c1 and the tip of the lower horizontal portion 4c2, an upper horizontal portion 5c1, and a lower horizontal portion 5c2. It is comprised by the front board 5c4 which closes one opening of the frame-shaped frame formed by the side part perpendicular | vertical part 5c3 of the box-shaped main body 5a.

On the upper surface of the upper horizontal portion 5c1 constituting the pair of arm portions 5c located across the box-shaped main body 5a, the upper side from the upper horizontal portion 5c1 toward the opposite side vertical portion 5a3 constituting the box-shaped main body 5a An upper elastic plate member 5d that is inclined in the direction is formed, and on the back surface of the lower horizontal portion 5c2 that forms the arm portion 5c, the upper side horizontal portion 5c1 and the opposite side vertical portion 5a3 that forms the box-shaped main body 5a A lower elastic plate member 5e inclined downward is formed.

The locking member 5g is disposed substantially horizontally on the side vertical portion 5c3 constituting the arm portion 5c via the box-shaped intermediate member 5f or directly on the side vertical portion 5c3 constituting the arm portion 5c. It is connected to. When the outer side wall 5f1 of the intermediate member 5f or the intermediate member 5f is omitted, the locking member 5g is a prism-shaped locking body formed substantially perpendicular to the side vertical portion 5c3 constituting the arm portion 5c. 5g1 and a pair of locking projections 5g2 protruding from the tip of the opposing vertical side surface 5g1 'of the locking body 5g1.

Next, attachment of the lock male member 5 to the short side wall 3 will be mainly described with reference to FIGS. 10, 11, and 18 to 20.

The locking member 5g of the lock male member 5 is inserted into the lock male member insertion through hole 3h formed in the short side wall 3, and the pair of vertical guide grooves 5b formed in the back plate 5a4 of the lock male member 5 is inserted. The vertical guide rib 3i formed on the short side wall 3 is inserted. At least the locking projection 5g2 forming the locking member 5g of the lock male member 5 protrudes outward from the lock male member insertion through hole 3h, and the lock male member 5 is perpendicular to the end of the short side wall 3. It is configured not to protrude outward beyond the flange 3d. When the lock male member 5 is attached to the short side wall 3, the upper elastic plate 5 d of the lock male member 5 is positioned in contact with or close to the upper end horizontal flange 3 b of the short side wall 3. The lower elastic plate member 5e of the male member 5 is configured to be in contact with or close to the upper horizontal flange 3f of the short side wall 3. As described above, since the vertical guide ribs 3 i formed on the short side wall 3 are inserted into the pair of vertical guide grooves 5 b formed on the back plate 5 a 4 of the lock male member 5, the lock male member 5 extends in the horizontal direction. The movement of the lock male member 5 can be stably moved in the vertical direction.

In the state assembled in a box shape, the box-shaped main body 5a of the lock male member 5 attached to the short side wall 3 is a standby position positioned approximately in the middle between the upper horizontal flange 3b and the upper horizontal flange 3f of the short side wall 3. In this standby position, as shown in FIG. 21, the distal end portion of the locking body 5g1 and the locking projection 5g2 of the locking member 5g constituting the lock male member 5 are arranged. Is located between the corner vertical portion 2f and the inner vertical portion 2g formed on the long side wall 2, and the locking protrusion 5g2 of the locking member 5g constituting the lock male member 5 is formed on the long side wall 2. Behind the outer locking projection 2f1 of the formed corner vertical portion 2f and the inner locking projection 2g1 of the inner vertical portion 2g, in other words, the outer locking of the corner vertical portion 2f formed on the long side wall 2 Inner locking protrusions of the protrusion 2f1 and the inner vertical part 2g Than g1, located in the plate-like portion 2a of the long side wall 2.

As described above, in the state assembled in the box shape, the locking projection 5g2 of the locking member 5g constituting the lock male member 5 is formed by the corner vertical portion 2f formed on the long side wall 2 and the inner vertical portion. 2g, the locking projection 5g2 of the locking member 5g is formed on the long side wall 2 even if a load that falls in the direction of the bottom 1 is applied to the short side wall 3. Therefore, even if a load is applied to the short side wall 3 in a direction opposite to the bottom 1, the short side wall 3 is prevented from being tilted in the direction opposite to the bottom 1. The locking protrusion 5g2 of the member 5g abuts on the corner vertical portion 2f formed on the long side wall 2, and accordingly, the tilt of the short side wall 3 in the direction opposite to the bottom 1 is prevented.

Furthermore, in the state assembled in the box shape, the locking protrusion 5g2 of the locking member 5g constituting the lock male member 5 is formed between the corner vertical portion 2f and the inner vertical portion 2g formed on the long side wall 2. Since it is located between the outer locking projection 2f1 of the corner vertical portion 2f and the inner locking projection 2g1 of the inner vertical portion 2g formed on the long side wall 2, Even if the long side wall 2 is about to move outward, the locking protrusion 5g2 formed on the locking member 5g of the lock male member 5 is the outer locking protrusion of the corner vertical portion 2f formed on the long side wall 2. Since it abuts against 2f1 and the inner locking projection 2g1 of the inner vertical portion 2g, it is possible to prevent the long side wall 2 from rotating outward. Therefore, in the state assembled in the box shape, the long side wall 2 rotates outward, the male hinge member H2 formed on the long side wall 2, the female hinge member H1 formed on the bottom portion 1, and the long side bank of the bottom portion 1. It is possible to prevent the part 1a and the like from being damaged.

In order to fold the folding container as shown in FIG. 22 by tilting the short side wall 3 toward the bottom 1 from the state assembled in the box shape described above, the lock male member 5 attached to the short side wall 3 is used. Is moved upward against the elastic force of the upper elastic plate member 5d, the locking member 5g of the lock male member 5 becomes the inner vertical portion of the long side wall 2 as shown in FIGS. Since it is located on the side of the notch recess 2i formed at the upper end of 2g, when the short side wall 3 is tilted toward the bottom 1 from this state, the locking member 5g of the lock male member 5 is The short side wall 3 can be tilted in the direction of the bottom 1 through the notch recess 2i formed at the upper end of the inner vertical portion 2g of the long side wall 2. When an operator mistakenly tries to tilt the short side wall 3 in the direction opposite to the bottom 1, the locking projection 5 g 2 formed on the locking member 5 g of the lock male member 5 is formed on the long side wall 2. Therefore, the rotation of the short side wall 3 in the direction opposite to the bottom 1 is prevented.

Further, when the short side wall 3 is tilted in the direction opposite to the bottom 1 from the state of being assembled into the box shape described above, the lock male member 5 attached to the short side wall 3 is used as the elastic force of the lower elastic plate member 5e. When it is moved downward, the locking member 5g of the lock male member 5 is a corner formed at the lower end of the corner vertical portion 2f of the long side wall 2 as shown in FIGS. Since the short side wall 3 is tilted in a direction opposite to the bottom 1 from this state, the locking member 5g of the lock male member 5 is The short side wall 3 can be tilted in the direction opposite to the bottom 1 through the corner notch 2j formed at the lower end of the vertical part 2f. If the operator mistakenly tries to tilt the short side wall 3 toward the bottom 1, the locking projection 5 g 2 formed on the locking member 5 g of the lock male member 5 is formed on the long side wall 2. Therefore, the short side wall 3 is prevented from rotating in the direction of the bottom 1.

When the folding container is assembled into a box shape, a gap is formed between the lower end horizontal flange 3c of the short side wall 3 and the intermediate horizontal portion 4b2 constituting the upper end flange 4b of the connecting member 4. Such a gap is closed by the strip-shaped protruding rib 3m extending downward beyond the lower end horizontal flange 3c. Further, as shown in FIG. 16, the strip-shaped protruding rib 3 m is formed so that the lower end horizontal flange 3 c of the short side wall 3 and the upper end flange 4 b of the connecting member 4 are formed when the short side wall 3 is tilted in the direction opposite to the bottom portion 1. A gap formed between the intermediate horizontal portion 4b2 and the intermediate horizontal portion 4b2 can be filled, and therefore the article A can be smoothly taken out from the folding container assembled in a box shape.

Further, as shown in FIG. 3, FIG. 7, FIG. 15, etc., the inner vertical portion 1a1 forming the long side bank portion 1a formed on the bottom portion 1 is replaced by the outer vertical portion 1a3 except for the lower region. It is possible to form a recessed region 1a1 ′ extending in the lateral direction and retracting in the direction of the outer vertical portion 1a3 and extending in the lateral direction. As shown in FIG. 17, the upper surface of the bottom plate 1 b of the bottom portion 1 is slid from the open portion where one short side wall 3 of the folding container assembled in a box shape is opposed to the bottom portion 1. However, when the article is taken out, the concave portion 1a1 ′ as described above is formed so that the article is almost entirely on the inner surface 2a2 of the plate-like portion 2a of the long side wall 2 and the long side bank portion 1a of the bottom portion 1. Compared to the case of mechanical contact, there is less frictional resistance, thus facilitating removal of the article from the folding container.

6 is a ridge guide member formed along the long side wall 2 at the center of the upper surface of the bottom plate 1b of the bottom 1, and when such a ridge guide member 6 is projected, the article A As shown in FIG. 17, the convex guide members 6 are sandwiched in two rows. By projecting such a convex guide member 6, when the folding container in which the article A is stored is conveyed, the stored article A is prevented from moving in the direction of the long side wall 2; Is not disturbed, and damage to the article A due to the collision between the articles A can be reduced. Further, when the article A is taken out while sliding the upper surface of the bottom plate 1b of the bottom portion 1 from the open portion formed by facing one short side wall 3 of the folding container assembled in a box shape in the opposite direction to the bottom portion 1. In addition, even if the articles A stored in one row try to move in the direction of the articles A stored in the other row, the movement is restricted by the ridge guide member 6, The article A can be smoothly taken out, and damage to the article A due to the collision between the articles A can be reduced. Such ridge guide members 6 are formed as necessary, and a plurality of ridge guide members 6 are formed in consideration of the size and shape of the article A to be stored. can do.

In the embodiment described above, when the lock male member 5 attached to the short side wall 3 is moved upward, the short side wall 3 is tilted toward the bottom 1 and the lock male attached to the short side wall 3 is used. When the member 5 is moved downward, an example in which the short side wall 3 is tilted in the direction opposite to the bottom 1 is shown, but the above-described notch is formed at the upper end of the corner vertical part 2f of the long side wall 2. When the lock male member 5 attached to the short side wall 3 is moved upward by forming the recess 2i and forming the above-described corner notch 2j at the lower end of the inner vertical portion 2g. The short side wall 3 is tilted in the direction opposite to the bottom 1, and when the lock male member 5 is moved down, the short side wall 3 can be tilted in the bottom 1 direction.

As described above, the vertical portion 4g1 of the fitting projection 4g of the connecting member 4 is the bottom horizontal flange of the short side wall 3 as shown in FIG. 26 and the like when the folding container is assembled in a box shape. It fits into the notch recess 3c1 formed in the central part of 3c, and the horizontal part 4g2 of the fitting projection 4g is in contact with or close to the upper surface of the lower horizontal flange 3c of the short side wall 3. It is configured. Further, the front end of the lower horizontal flange 3c of the short side wall 3 is fitted into a recess 4j formed by the vertical portion 4g1 constituting the fitting protrusion 4g of the connecting member 4, the horizontal portion 4g2, and the upper surface of the belt-like protruding block 4f. Therefore, in a state where the folding container is assembled in a box shape, the pair of connecting members 4 are suspended near both ends of the back surface of the lower horizontal flange 3c of the short side wall 3. Preventing the outer rotation centering on the upper rotation axis centering on the axis of the connecting pin p1 fitted into the substantially cylindrical bearing portion 3j and the upper bearing portion 4d of the connecting member 4 is prevented. Can do.

It is preferable to form a locking protrusion 4g2 'extending downward at the tip of the horizontal part 4g2 where the through hole 4i formed in the fitting protrusion 4g of the connecting member 4 is located. Then, in a state where the folding container is assembled in a box shape, the locking projection 4g2 ′ suspended from the horizontal portion 4g2 of the fitting projection 4g is pressed against the upper surface of the lower end horizontal flange 3c of the short side wall 3. Therefore, the connecting member 4 is composed of a pair of substantially cylindrical bearing portions 3j suspended near both ends of the back surface of the lower end horizontal flange 3c of the short side wall 3, and an upper bearing portion 4d of the connecting member 4. It is possible to reliably prevent the outer pin from rotating about the upper rotation shaft centered on the axial center of the connecting pin p1 fitted in the pin.

As described above, when the lock male member 5 attached to the short side wall 3 is moved up from the state in which the folding container is assembled in a box shape, the short side wall 3 is opposite to the bottom 1 direction or the bottom 1. When the lock male member 5 attached to the short side wall 3 is moved downward, the short side wall 3 is tilted in the direction opposite to the tilting direction. Therefore, when one of the short side walls 3 of the folding container assembled in a box shape is tilted to the opposite side to the bottom portion 1 to form an open portion, an operator mistakenly moves one short side wall 1 It is possible to solve the problem that the article stored in the folding container assembled in a box shape is damaged or the short side wall colliding with the article is damaged.

FIG. 1 is a perspective view of the folding container of the present invention assembled in a box shape. FIG. 2 is a perspective view of the bottom part of the folding container of the present invention. FIG. 3 is a partially exploded perspective view of the bottom and the long side wall for explaining the hinge connection between the bottom and the long side wall constituting the folding container of the present invention. FIG. 4 is a partial vertical cross-sectional view of the bottom and long side walls for explaining the hinge connection between the bottom and long side walls constituting the folding container of the present invention. FIG. 5 is a partial perspective view of the bottom part of the folding container of the present invention. FIG. 6 is a partial vertical cross-sectional view of the bottom, the long side wall, and the like similar to FIG. FIG. 7 is a partial vertical cross-sectional view of the bottom, the long side wall and the like similar to FIG. FIG. 8 is a perspective view of the long side wall constituting the folding container of the present invention divided into two parts. FIG. 9 is a partial perspective view of the long side wall constituting the folding container of the present invention. FIG. 10 is a perspective view from the outer surface side of the short side wall constituting the folding container of the present invention. FIG. 11 is a perspective view from the inner surface side of the short side wall constituting the folding container of the present invention. FIG. 12 is a perspective view from the outer surface side of the connecting member constituting the folding container of the present invention. FIG. 13 is a perspective view from the inner surface side of the connecting member constituting the folding container of the present invention. FIG. 14 is an exploded perspective view of a part of the short side wall, the connecting member, and a part of the bottom field constituting the folding container of the present invention. FIG. 15 is a perspective view showing a state in which one short side wall of the folding container according to the present invention is tilted toward the bottom and the other short side wall is tilted to the opposite side to the bottom. FIG. 16 is a partial perspective view showing a state in which one short side wall of the folding container of the present invention is tilted to the opposite side to the bottom. FIG. 17 is a partial perspective view showing a state in which one short side wall of the folding container of the present invention is tilted to the side opposite to the bottom. FIG. 18 is a perspective view from the outer surface side of the lock male member constituting the folding container of the present invention. FIG. 19 is a perspective view from the inner surface side of the lock male member constituting the folding container of the present invention. FIG. 20 is a perspective view of a state in which a connecting member and a lock male member are disposed on a short side wall constituting the folding container of the present invention. FIG. 21 is an inner surface side of the long side wall for explaining the engagement relationship between the lock female member formed at the upper end corners of the long side wall of the folding container according to the present invention and the lock male member disposed on the short side wall. It is a partial front view from. FIG. 22 is a perspective view of the folded container of the present invention in a folded state. FIG. 23 is a view similar to FIG. 21 for explaining the engagement relationship between the lock female member formed at the upper end corners of the long side wall of the folding container of the present invention and the male lock member disposed on the short side wall. It is a partial front view from the inner surface side of a long side wall. FIG. 24 is a partial perspective view of the folding container of the present invention at the time when the short side wall is about to be tilted toward the bottom. FIG. 25 is a view similar to FIG. 21 for explaining the engagement relationship between the lock female member formed at the upper end corners of the long side wall of the folding container of the present invention and the male lock member disposed on the short side wall. It is a partial front view from the inner surface side of a long side wall. FIG. 26 is a partial perspective view of the folding container of the present invention when the short side wall is about to be tilted in the direction opposite to the bottom.

Explanation of symbols

A ... Article H1 ... Female hinge member H2 ... ............ Male hinge member L ......... Lock female member 1 ...・ ・ ・ ・ ・ ・ ・ ・ Bottom 1a ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Long-side bank 2 ・ ・ ・ ・ ・ ・ ・ ・・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Long side wall 3 ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Short side wall 4 ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・..... Connecting member 5 ........... Lock male member

Claims (3)

From the assembled state in a box shape, it is possible to fold one of the opposite side walls first by tilting in the bottom direction, and then tilting the other opposite side wall in the bottom direction later, and In a folding container that can tilt a side wall that is tilted in the bottom direction in a direction opposite to the bottom, the lock male member that is disposed on the side wall that is tilted in the bottom direction first moves up in the direction toward the bottom. The side wall to be tilted is tilted to only one of the bottom direction or the direction opposite to the bottom portion, and the lock male member disposed on the side wall to be tilted to the bottom direction first moves down to the bottom direction. The folding container is configured such that the side wall to be tilted is tilted in a direction opposite to the tilting direction. The locking male member engaging member of the locking male member disposed on the side wall that is tilted in the bottom direction first by the vertical movement of the locking male member is formed at the corner of the locking female member that is formed on the side wall that is tilted in the bottom direction later. The folding container according to claim 1, wherein the folding container is configured to be selectively brought into contact with either the vertical portion or the inner vertical portion. In a state assembled in a box shape, the locking protrusions protruding from the locking members of the lock male member are engaged with the locking protrusions of the corner vertical part and the inner vertical part constituting the lock female member. The folding container according to claim 1, wherein the folding container is configured to abut against the stop protrusion.

Images