CN1799944A - Folding container - Google Patents

Abstract

The male hinge member (H2') disposed at least on one of the opposite side walls (3) forms a joint block (8) for preventing floating, and at the same time, it is configured to correspond to the above-mentioned one of the opposite side walls (3). Below the hook (H3) of the female hinge member (H1') of the embankment (1b) of the bottom (1), a notch recess (9) can be inserted into the above-mentioned floating prevention joint block (8). When the container is folded When assembled into a box shape, the above-mentioned joint block (8) for preventing floating is configured to be substantially in contact with the protruding portion (h3b) of the above-mentioned hook. In this way, even if the side walls of the folded container assembled in the box shape are held and lifted, the side walls do not float from the bottom, and therefore, the workability of transport operations such as conveyance and transportation of the folded container assembled in the box shape is improved.

Description

collapsible container

technical field

The invention relates to a foldable container, which is composed of a bottom, an opposite side wall of an opposite bank connected to the bottom by a hinge, and an opposite side wall of an opposite bank connected to the bottom by a hinge. sidewall composition.

Background technique

In the past, Patent Document 1 discloses a collapsible container in which a foot of a male hinge portion formed on a side wall is inserted into a concave portion of a female hinge portion formed on a bank portion of the bottom, thereby hinge-connecting the bottom and the bottom. side wall.

(Patent Document 1) Japanese Patent Laid-Open No. 2002-362555

In the case of the above-mentioned foldable container, the opposite side wall and the other side wall are assembled into a box-shaped state in a state of standing upright with respect to the bottom, and are inserted into the concave part of the female hinge part formed on the bank part of the bottom. The legs formed on the male hinge portion of the side wall can move up and down. Therefore, when the operator holds the side wall to lift the folded container assembled into a box shape, there is a problem that the side wall is lifted from the bottom.

Contents of the invention

An object of the present invention is to prevent the lifting of the side walls of the above-mentioned conventional collapsible container.

In order to achieve the above object in the present invention, the collapsible container has a bottom, an opposite side wall, and an opposite side wall; the opposite side wall is hinged to the opposite embankment of the bottom; The side wall is hinged to the other opposite bank of the above-mentioned bottom; wherein: the male hinge member arranged at least on one of the opposite side walls forms a joint block for preventing floating, and at the same time, it is configured to be arranged on the other side of the above-mentioned one. Below the hook of the female hinge member of the embankment of the bottom corresponding to the opposite side wall is formed a notch concave portion into which the above-mentioned joint block for preventing floating can be inserted. When the foldable container is assembled into a box shape, the joint block for preventing floating is substantially The protruding portion of the above-mentioned hook is formed in contact with the above-mentioned hook.

When the foldable container is assembled into a box shape, the lifting preventing joint block is substantially in contact with the protruding part of the hook, so even if the side wall of the foldable container assembled into a box shape is held and lifted, the side wall will not Since it floats from the bottom, the operability of the transportation work such as transportation and transportation of the folded container assembled into a box shape is improved.

Description of drawings

Fig. 1 is a perspective view of the collapsible container of the present invention assembled in a box shape.

Figure 2 is a perspective view of the collapsible container of the present invention during assembly or during folding.

Figure 3 is a perspective view of the collapsible container of the present invention in a collapsed state.

Fig. 4 is a partially exploded perspective view illustrating the hinge connection of the long side wall and the bottom of the foldable container of the present invention.

5 is a vertical sectional view of the hinge portion and the like just before the hinge connection for explaining the hinge connection of the long side wall and the bottom of the foldable container according to the present invention.

Fig. 6 is a vertical cross-sectional view illustrating the hinge connection between the long side wall and the bottom of the foldable container according to the present invention, the hinge part etc. which have been hinged.

Fig. 7 is a vertical cross-sectional view of the substantially vertical long side walls and the hinge portion of the bottom of the foldable container according to the present invention.

Fig. 8 is a vertical sectional view of a hinge portion and the like of the foldable container of the present invention in a folded state.

Fig. 9 is a partial perspective view of the short side wall viewed from the outer side of the collapsible container of the present invention.

Fig. 10 is a partial perspective view of the short side wall viewed from the inner side of the collapsible container of the present invention.

Figure 11 is a partial perspective view of the bottom of a collapsible container of the present invention.

Fig. 12 is a vertical cross-sectional view of the short side walls and the hinge portion of the bottom in a substantially horizontal state of the foldable container of the present invention.

Fig. 13 is also a vertical cross-sectional view of the short side wall and the hinge part of the bottom in a substantially horizontal state of the foldable container of the present invention.

Fig. 14 is a vertical cross-sectional view of the short side walls and the hinge portion of the bottom in a substantially vertical state of the foldable container of the present invention.

Detailed ways

Examples of the present invention will be described below, but the present invention is not limited as long as the gist of the present invention is exceeded.

First, the overall structure of the foldable container of the present invention will be described with reference to FIGS. 1 to 3 .

Reference numeral 1 is a bottom having a substantially rectangular planar shape, and the bottom 1 has banks (hereinafter referred to as long side banks) 1a formed on opposite long sides and banks formed on opposite short sides (hereinafter referred to as short sides). Side bank portion) 1b, in this embodiment, the height of the long side bank portion 1a is formed higher than the height of the short side bank portion 1b. In addition, an appropriate number of female hinge members H1 , which will be described later, are arranged at predetermined intervals on the long-side bank portion 1 a and the short-side bank portion 1 b.

Symbol 2 is a long side wall, and on the back of the lower end flange 2a of the long side wall 2, a long side wall side male hinge member H1, which will be described later, is arranged corresponding to the long side side female hinge member H1 arranged on the long side side bank portion 1a of the bottom 1. Hinge member H2. Reference numeral 3 denotes a short side wall. On the back of the lower end flange 3a of the short side wall 3, a short side wall described later is arranged corresponding to the short side female hinge member H1' disposed on the short side bank 1b of the bottom 1. Side male hinge member H2'.

By connecting the long side wall side male hinge member H2 arranged on the lower end flange 2a of the long side wall 2 and the long side side female hinge member H1 arranged on the long side side bank portion 1a of the bottom 1, the long side wall 2 is formed as a The bottom 1 is hinged, and the short-side male hinge member H2' arranged on the lower end flange 3a of the short side wall 3 is connected to the short-side female hinge member H1 arranged on the short-side embankment 1b of the bottom 1. ', so that the short side wall 3 is hinged to the bottom 1 to form a foldable container.

At both ends of the horizontally long substantially rectangular plate-shaped portion 2b of the long side wall 2, a vertically elongated joint frame 4 extending substantially perpendicular to the plate-shaped portion 2b is formed, and an appropriate number of through holes are perforated in the joint frame 4. 4a. In addition, a U-shaped slot 5 is formed in the plate-like portion 2b near the joint frame 4 to form an elastic tongue 6, and the joint frame 4 side of the elastic tongue 6 is formed as a free end. At the front end portion of the elastic tongue 6 , an engaging convex portion 6 a is formed facing the engaging frame 4 .

At both ends of the horizontally long substantially rectangular plate-like portion 3b of the short side wall 3, by extending the plate-like portion 3b, a vertically elongated joint frame 7 is formed. The through hole 4a of the engagement frame 4 is engaged with the engagement protrusion 7a.

In order to be assembled into a box shape as shown in FIG. 1 from the folded state as shown in FIG. 3 Turning towards the direction of the long side wall 2 standing up vertically, the fitting projection 7a formed on the joint frame 7 of the short side wall 3 is fitted to the front and back of the through hole 4a of the joint frame 4 pierced through the long side wall 2 The engaging frame 7 of the short side wall 3 contacts the engaging convex portion 6 a of the elastic tongue 6 formed on the long side wall 2 to deform the elastic tongue 6 outward. When the engaging frame 7 of the short side wall 3 passes through the engaging protrusion 6a of the elastic tongue 6 formed on the long side wall 2, the elastic tongue 6 pushed outward by the engaging frame 7 of the short side wall 3 is restored by its restoring force. Back, the engagement protrusion 6a of the elastic tongue 6 contacts the engagement frame 7 of the short side wall 3 standing upright substantially, preventing the short side wall 3 from turning toward the bottom 1 .

In addition, in order to fold the foldable container assembled into a box shape, at first, the elastic tongue piece 6 of the long side wall 2 is pushed outwardly by making the engaging protrusion 6a disengage from the engaging frame 7 of the short side wall 3, and thereafter, The short side wall 3 is turned toward the bottom 1, so that the matching projection 7a formed on the joint frame 7 of the short side wall 3 is discharged from the through hole 4a of the joint frame 4 pierced through the long side wall 2, so that the short side wall 3 falls onto bottom 1. Thereafter, the substantially vertical long side walls 2 are collapsed toward the bottom 1, whereby the foldable container assembled into a box shape is folded.

In the folded state, when the short side walls 3 that fell earlier were superimposed on the bottom 1 from a substantially vertical state, the short side walls 3 were partially overlapped with each other, and similarly, the long side walls 2 that fell later The long side walls 2 are also partially overlapped with each other when falling from the substantially vertical state.

Next, the long-side female hinge member H1 disposed on the long-side bank portion 1a of the bottom 1 will be described with reference to FIGS. 4 to 8 as an example, and the lower end of the long-side wall 2 will be described The long side wall side male hinge member H2 of the flange 2a.

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

A vertical hole h1 having a rectangular planar shape is formed in the horizontal portion 1a2 of the long-side bank portion 1a. In addition, in the inner vertical portion 1a1 of the long-side bank portion 1a, a square-shaped notched concave portion h2 is formed, which opens upward and extends toward the bottom plate 1c. The width (length along the longitudinal direction of the long-side bank 1a) W1 of the notch recess h2 is shorter than the length W2 of the long side (length along the longitudinal direction of the long-side bank 1a) of the vertical hole h1, and the notch recess h2 is located in the vertical hole. The approximate center of the long side of h1.

On the upper end of the inner surface of the inner vertical portion 1a1 (the surface on the outer vertical portion 1a3 side) located on both sides of the notch concave portion h2, a hook h3 is projected from the horizontal portion 1a2 of the long-side bank portion 1a toward the outer vertical portion. 1a3 is comprised by the upper inclined surface h3a inclined so that the outer vertical part 1a3 may approach gradually, and the substantially horizontal extension part h3b.

The long-side female hinge member H1 is constituted by the vertical hole h1 formed in the above-mentioned long-side bank portion 1a, the cutout recessed portion h2, and the hook h3.

On the other hand, the long side wall side male hinge member H2 is formed on the back surface of the lower end flange 2a perpendicular to the plate-like portion 2b of the long side wall 2 . The male hinge member H2 on the long side wall has plate-shaped supporting pieces h10 vertically perpendicular to the longitudinal direction of the lower end flange 2a at predetermined intervals on the back of the lower end flange 2a, and a pair of supporting pieces h10 are connected by a connecting piece h11. The width W3 between the outer surfaces of the pair of support pieces h10 (the surface opposite to the facing surface of the pair of support pieces h10) is formed narrower than the width W1 of the notch recess h2, so that the pair of support pieces h10 can be inserted It is constituted up to the notch recess h2. In addition, a hinge piece h12 is attached to the lower end of the outer surface of the pair of support pieces h10, and the surface (hereinafter referred to as the upper surface) h12a of the hinge piece h12 opposite to the lower end flange 2a is formed as a flat surface substantially parallel to the lower end flange 2a. , In addition, a substantially rectangular parallelepiped-shaped contact block portion h12b is protruded from the end portion located on the side of the plate-like portion 2b of the above-mentioned upper surface 12a.

The height W4 of the direction perpendicular to the lower end flange 2a of the hinge piece h12 (the height from the bottom surface h12c of the hinge piece h12 to the upper surface of the contact piece portion h12b) W4 is formed to be larger than the outer vertical portion 1a3 of the long side bank 1a of the bottom 1. A gap W5 between the tip of the hook h3 protruding from the inner surface of the inner vertical portion 1a1 is slightly wider.

The long side wall side male hinge member H2 is constituted by the aforementioned pair of support piece h10, connection piece h11, and hinge piece h12 having the contact piece portion h12b.

The width W6 of the plate-like portion 2b of the long side wall side male hinge member H2 along the long side wall 2 (the gap between the vertical side surfaces h12d of a pair of hinge pieces h12) is formed to be wider than the vertical hole constituting the long side female hinge member H1. The length W2 of the long side of h1 is shorter. In addition, the long side wall side male hinge member H2 formed on the back side of the lower end flange 2a of the long side wall 2 can be inserted into the long side side formed on the long side female hinge member H1. The vertical hole h1 of the bank part 1a is formed.

A hook h3 protrudes from the end portion of the inner surface of the inner vertical portion 1a1 formed on both sides of the cutout recess h2 of the inner vertical portion 1a1 of the long side bank portion 1a, and the height of the cutout recess h2 below the protruding portion h3b of the hook h3 is In other words, the height W8 from the protruding portion h3b of the hook h3 to the lower end h2a of the notched recess h2 is twice or more than the width W7 of the supporting piece h10 constituting the long side wall side male hinge member H2. In addition, the height W9 from the lower end h2a of the notched concave portion h2 formed in the inner vertical portion 1a1 of the long-side bank portion 1a to the bottom plate 1c of the bottom 1 is formed to be the thickness of the short side wall 3 (the length in the vertical direction with respect to the plate-like portion 3b). ) 2 times or more than T1.

In order to connect the bottom 1 and the long side wall 2 with a hinge, as shown in FIG. Descending, insert the support piece h10 formed on the long side wall 2 with the hinge piece h12 protruding into the recess h2 formed on the long side bank 1a, and at the same time, insert the hinge piece h12 into the recess h12 formed on the long side bank 1a At this time, because the height W4 of the direction perpendicular to the lower end flange 2a of the hinge piece h12 is higher than the outer vertical portion 1a3 of the long side bank portion 1a of the bottom 1 and the inner vertical portion 1a1 protruding from the inner surface of the inner vertical portion 1a1 The gap W5 between the front ends of the hook h3 is formed wider, so that the hinge piece h12 is placed on the upper inclined surface of the hook h3 protruding from the inner surface of the inner vertical portion 1a1 located on both sides of the notch concave portion h2 as shown in FIG. 5 . h3a, the notched concave portion h2 is formed in the inner vertical portion 1a1 of the long-side bank portion 1a of the bottom 1 . Thereafter, when the long side wall 2 and the bottom 1 are maintained in a substantially horizontal state and the long side wall 2 is further forced down toward the bottom 1, the hinge block h12 makes the inner vertical portion 1a1 and/or the outer vertical portion 1a3 of the long side bank 1a The bending deformation expands the gap W5 formed between the outer vertical portion 1a3 of the long side bank 1a of the bottom 1 and the hook h3 protruding from the inner surface of the inner vertical portion 1a1, thereby passing through the outer vertical side of the long side bank 1a. The portion 1a3 and the hook h3 are arranged between the outer vertical portion 1a3 and the inner vertical portion 1a1 formed in the long-side bank portion 1a of the bottom 1 as shown in FIG. 6 . In this way, the long-side female hinge member H1 arranged on the long-side bank portion 1 a of the bottom 1 and the long-side wall-side male hinge member H2 arranged on the long side wall 2 are hingedly connected.

When the long side wall 2 in the substantially horizontal state is raised up substantially vertically from the folded state of the foldable container, as shown in FIG. At the same time, the contact piece h12b of the hinge piece h12 is separated from the protruding part h3b of the hook h3 protruding from the inner vertical part 1a1 formed on the long side bank 1a of the bottom 1 by a predetermined distance D1, Located below the protruding portion h3b. Therefore, when the long side wall 2 is raised in a state where the long side wall 2 is substantially vertically erected as shown in FIG. The distance D1 between the contact block portion h12b and the protruding portion h3b of the hook h3.

Next, the short-side bank 1b of the bottom 1, the short-side female hinge member H1' formed on the short-side bank 1b, and the short-side male hinge disposed on the short side wall 3 will be described below with reference to FIGS. 9 to 13. Building block H2'.

The short-side bank portion 1b of the bottom 1 also consists of an inner vertical portion 1b1 extending substantially vertically upward from the edge portion of the bottom plate 1c of the bottom 1 , and an inner vertical portion 1b1 extending from the upper end of the inner vertical portion 1b1 in the same manner as the above-mentioned long-side bank 1a. The outer horizontal portion 1b2 extending substantially horizontally and the outer vertical portion 1b3 extending downward from the edge portion of the horizontal portion 1b2 substantially parallel to the inner vertical portion 1b1 are formed, and the short-side bank portion 1b is formed to be in line with the above-mentioned long-side vertical portion 1b. The hinge member H1 is the same as the short-side female hinge member H1'.

The cutout h2 constituting the short-side female hinge member H1' formed on the short-side bank 1b of the bottom 1 extends to the bottom plate 1c of the bottom 1 or near the bottom plate 1c. In other words, the lower end h2a of the cutout recess h2 is located on the same plane as the bottom plate 1c of the bottom 1 or in the vicinity of the bottom plate 1c. With such a configuration, when the short side wall 3 that falls earlier among the opposing short side walls 3 falls toward the bottom 1 as shown in FIG. The supporting piece h10 of ' does not touch the lower end h2a of the cutout recess h2 constituting the short-side female hinge member H1' formed on the short-side bank 1b as shown in FIG. The substantially entire surface of the plate-like portion 3 b of the short side wall 3 is substantially in contact with the bottom plate 1 c of the bottom 1 . As shown in FIG. 11, in this embodiment, the case where the lower end h2a of the notch recessed part h2 and the bottom plate 1c of the bottom part 1 are in the same plane is shown.

In addition, a notched concave portion h2 is formed in the inner vertical portion 1b1 of the short-side bank portion 1b, and a hook h3 is protruded from the upper end of the inner surface of the inner vertical portion 1b1 located on both sides of the notched concave portion h2, and is located under the protruding portion h3b of the hook h3. In other words, the height W10 from the protruding portion h3b of the hook h3 to the lower end h2a of the notch recess h2 has twice the width W7 of the supporting piece h10 constituting the male hinge member H2' on the short side wall side or 2 times or more. above the height.

When the substantially horizontal short side wall 3 is erected substantially vertically from the folded state of the foldable container, as shown in FIG. The horizontal portion 1b2 of the bank 1b, and the contact piece h12b of the hinge piece h12 are separated by a predetermined distance from the protruding portion h3b of the hook h3 formed on the inner vertical portion 1b1 of the short side bank 1b of the bottom 1. D2, located below the protruding portion h3b. Therefore, as shown in FIG. 14, in the state where the short side wall 3 is substantially vertically erected, when the short side wall 3 is lifted, the bottom 1 remains unchanged, and only the short side wall 3 floats the above-mentioned hinge block from the bottom 1. The distance D2 between the contact block part h12b of h12 and the protruding part h3b of the hook h3.

In order to fold the collapsible container assembled into a box shape, one of the relatively vertical short side walls 3 is first made to fall toward the bottom 1 direction, and the short side wall 3 of the substantially vertical state faces toward the bottom. During the turning in one direction, the lower end flange 3a of one of the short side walls 3 placed on the horizontal portion 1b2 of the short side bank portion 1b is separated from the horizontal portion 1b2. Thereafter, while maintaining one short side wall 3 in a substantially horizontal state, the support piece h10 of the short side wall side male hinge member H2' disposed on one short side wall 3 is formed along the short side bank 1b. The notch h2 of the female hinge member H1' on the short side of the short side moves downward, and substantially the entire surface of the plate-shaped part 3b of one short side wall 3 is overlapped with the bottom plate 1c of the bottom 1 as shown in FIGS. 12 and 13 .

Then, the other short side wall 3 of the opposing substantially vertical short side walls 3 falls toward the bottom 1, and is partially superimposed on one of the short side walls 3 previously superimposed on the bottom 1 in a substantially horizontal state. Like the one of the short side walls 3 that fell down earlier, even if the other short side wall 3 in the substantially vertical state turns around toward the bottom 1, it is placed on the side of the horizontal portion 1b2 of the short side bank 1b. The lower end flange 3a of the other short side wall 3 protrudes from the horizontal part 1b2. Thereafter, the support piece h10 of the short side wall side male hinge member H2' arranged on the other short side wall 3 is formed along the short side bank 1b while maintaining the other short side wall 3 in a substantially horizontal state. The notch h2 of the female hinge member H1' on the short side of the short side moves downward, and as shown in Figures 12 and 13, the other short side wall 3 is partially overlapped with each other in a substantially horizontal state and falls to the side that falls first. on the short side wall 3.

In this way, a pair of short side walls 3 that are partially overlapped and fallen as shown in FIGS. The height of the foldable container is lower than that of a conventional foldable container in which a pair of short side walls 3 are overlapped in an oblique state. Therefore, the storage efficiency when stacking foldable containers in a folded state can be improved.

After the above-mentioned opposing short side walls 3 are overlapped on the bottom 1 and fallen down, one of the vertically opposing long side walls 2 is collapsed toward the bottom 1 and overlapped into the opposing short side walls 3 On the short side wall 3 that fell down afterward, one of the long side walls 2 placed on the horizontal portion 1a2 of the long side bank 1a is placed in the middle of the rotation of the one long side wall 2 in a substantially vertical state toward the bottom 1. The lower end flange 2a is disengaged from the horizontal portion 1a2. Thereafter, the support piece h10 of the long side wall side male hinge member H2 disposed on the one long side wall 2 is placed along the long side formed on the long side bank portion 1a while maintaining the one long side wall 2 in a substantially horizontal state. The notch h2 of the side female hinge member H1 moves downward, and as shown in FIG. 8 , one long side wall 2 is superimposed on the above-mentioned short side wall 3 which fell down in a substantially horizontal state.

Then, the other side long side wall 2 in the opposite substantially vertical long side walls 2 falls down toward the bottom 1, and partly overlaps on the long side wall 2 of the substantially horizontal state that fell earlier, and the above-mentioned first In the same way, the long side wall 2 of one side that fell down is placed on the other long side wall 2 of the horizontal part 1a2 of the long side bank part 1a even if the other side long side wall 2 in the substantially vertical state is turned toward the bottom 1. The lower end flange 2a of the side wall 2 is disengaged from the horizontal portion 1a2. Thereafter, the supporting piece h10 of the male long side wall side hinge member H2 disposed on the other long side wall 2 is placed along the long side wall 1a formed on the long side bank 1a while maintaining the other long side wall 2 in a substantially horizontal state. The notch h2 of the female hinge member H1 on the long side moves downward, and as shown in FIGS. on the long side wall 2.

Like this, as shown in Fig. 3 and Fig. 8, make a pair of long side walls 2 that partially overlap each other and fall to overlap with bottom 1 in a substantially horizontal state, so the height ratio of the collapsible container in the folded state can be made The conventional collapsible container in which a pair of long side walls 2 are overlapped in an oblique state is low, and therefore, the storage efficiency when the collapsible containers in the folded state are stacked and stored can be improved.

As mentioned above, the opposite short side walls 3 that fall down first can be partially overlapped with each other in a substantially horizontal state from the state assembled into a box shape, and at the same time, the opposite long side walls 2 that fall down later can also be substantially horizontal. Since the foldable containers in the folded state are partially overlapped and fall down, the height of the foldable container in the folded state can be reduced, thereby improving the storage efficiency when the foldable containers in the folded state are stacked and stored.

With the above structure, the height of the foldable container in the folded state can be reduced. However, when the long side wall 2 or the short side wall 3 is held to lift the foldable container assembled into a box shape when it is assembled into a box shape, as mentioned above, the bottom of the foldable container 1 remains in its original state, and only the long side wall 2 and the short side wall 3 float from the bottom 1.

Next, the lifting prevention mechanism of the long side wall 2 and the short side wall 3 from the bottom 1 will be described with reference to FIGS. 9 to 14 .

In the middle of the outer surfaces of a pair of support pieces h10 constituting the short side wall side male hinge member H2′, respectively form a floating preventing joint piece 8, the thickness of the floating prevention joint piece 8 (from the outer surface of the supporting piece h10 The height) D3 is formed to be the same as or lower than the thickness (height from the outer surface of the support piece h10) D4 of the hinge piece h12 similarly formed on the lower end portion of the outer surface of the pair of support pieces h10.

The joint block 8 for preventing lifting has an inclined lower surface forming an inclined surface inclined upward from the plate-shaped portion 3b of the short side wall 3 toward the front end 3a1 of the lower end flange 3a when the outer surface of the support piece h10 is viewed from the front. The portion 8a also has a horizontal contact surface 8b1 that is substantially horizontal from the plate-shaped portion 3b of the short side wall 3 toward the front end 3a1 of the lower end flange 3a, and a downward slope 8b2 inclined downward from the front end of the horizontal contact surface 8b1. The upper surface portion 8b of the support piece h10 also has a side surface portion 8c formed as a flat surface substantially parallel to the outer surface of the support piece h10. In addition, the rear end of the upper part 8b of the joint block 8 for floating prevention is connected to the rear end side lower surface of the lower end flange 3a by a vertical belt-shaped connecting plate 8d formed by extending the connecting piece h11 outward.

The short-side female hinge member H1' is formed on the short-side bank portion 1b of the bottom 1, and the inner vertical parts 1b1 located on both sides of the notch recess h2 constituting the short-side female hinge member H1' are respectively formed for preventing floating. The engagement block 8 is inserted into a substantially square notch recess 9 which opens the notch recess h2 side and whose upper end reaches the protruding portion h3b of the hook h3. In addition, the width of the notch recess 9 (the distance from the vertical end 1b1' of the inner vertical portion 1b1 forming the notch recess h2 to the vertical edge 9a forming the notch recess 9) is formed to be substantially the same as the thickness D3 of the joint block 8 for preventing floating. . In addition, in the inner vertical portion 1 b 1 located above the notch concave portion 9 , the thickness of the inner vertical portion 1 b 1 is reduced to form a stepped portion 10 having the same width as the notch concave portion 9 .

When the short side wall 3 in the substantially horizontal state shown in FIG. The joint blocks 8 for preventing lifting of the support piece h10 are inserted into the notch recesses 9 formed in the inner vertical portion 1b1 located on both sides of the above-mentioned notch recess h2, and at the same time, as shown in FIG. The horizontal contact surface 8b1 of the upper surface 8b is substantially in contact with the protruding portion h3b of the hook h3 formed at the inner surface end of the inner vertical portion 1b1 of the short-side bank 1b constituting the bottom 1 . Therefore, even if the short side wall 3 in the state of being erected substantially vertically is lifted, the joint piece 8 for preventing floating is also substantially in contact with the protruding portion h3b of the hook h3, so that the short side wall 3 can be prevented from floating from the bottom 1. rise.

When the foldable container is assembled into a box shape, as mentioned above, the engagement protrusion 7a formed on the joint frame 7 of the short side wall 3 fits in the through hole 4a of the joint frame 4 pierced through the long side wall 2, so even if Lift up the long side wall 2 in the state of standing vertically, and the matching protrusion 7a formed on the joint frame 7 of the short side wall 3 is also fitted into the through hole 4a of the joint frame 4 pierced through the long side wall 2, and at the same time, The joint blocks 8 for preventing floating formed on the pair of support pieces h10 constituting the male hinge member H2' on the short side wall 3 disposed on the short side wall 3 are substantially in contact with the short side bank 1b formed on the bottom 1. The protruding portion h3b of the hook h3 on the inner surface of the inner vertical portion 1b1, so that the long side wall 2 will not float from the bottom 1.

As mentioned above, when the foldable container is assembled into a box shape, the above-mentioned joint block 8 for preventing floating and the lower end flange of the short side wall 3 are engaged and connected at the step portion 10 located above the notch concave portion 9 formed on the inner vertical portion 1b1. 3a, the inner vertical portion 1b1 is located on both sides of the notch h2 of the short-side female hinge member H1′ configured on the short-side bank portion 1b of the bottom 1. Part 10 cooperates with strip-shaped connecting plate 8d, so that the plate-shaped portion 3b of short side wall 3, the connecting piece h11 of male hinge member H2' on the short side wall side, the above-mentioned strip-shaped connecting plate 8d, and the short-side embankment of bottom 1 The inside vertical part 1b1 of 1b is comprised so that it may exist in substantially the same plane. With this configuration, when taking out the articles stored in the foldable container assembled into a box shape, it is possible to prevent the articles from being caught.

In addition, since the hinge piece h12 and the joint piece 8 for preventing floating are formed on the male hinge member H2' on the short side wall side, the deflection of the short side wall 3 in a substantially upright state in the front-rear direction is shared by the hinge piece h12, and the short side The upward floating of the wall 3 is shared by the joint block 8 for preventing floating, so the short side wall 3 has a hinge structure that is difficult to separate from the bottom 1, so the hinge between the short side wall 3 and the bottom 1 can be reliably performed. connect.

In addition, since the male hinge member H2' on the short side wall has a simple structure, the structure of the female hinge member H1' on the short side is also simplified. Since the installation space of the part 1b can be reduced, the reduction of the strength and rigidity of the bottom part 1 can be suppressed.

In the above-mentioned embodiment, the inner vertical portion 1b1 located on both sides of the cutout recess h2 of the short-side female hinge member H1' of the short-side bank portion 1b of the bottom 1 is formed into an insertable joint block 8 for preventing floating. The substantially square notch recess 9 is formed on the outer surface of a pair of supporting pieces h10 of the male hinge member H2' on the short side wall side of the short side wall 3, and the joint block 8 for preventing floating is formed, but it can also be arranged on the other side. In the inner vertical portion 1a1 on both sides of the notch recess h2 of the long side female hinge member H1 of the long side bank portion 1a of the bottom 1, a substantially square notch recess 9 into which the joint block 8 for preventing floating can be inserted is formed. Joint blocks 8 for preventing floating are formed on the outer surfaces of the pair of support pieces h10 of the short side wall side male hinge member H2 arranged on the long side wall 2 .

In addition, in the above-mentioned embodiment, in order to make the height of the collapsible container in the folded state lower, the opposite short side walls 3 that fell earlier were partially overlapped with each other, and were constructed in a substantially horizontal state. The opposite long side walls 2 also partially overlap each other and are turned into a substantially horizontal state, but only the side walls of either the opposite short side walls 3 or the opposite long side walls 2 can be partially overlapped with each other and turned into a substantially horizontal state. In this case, compared with the above-mentioned embodiment, the height of the collapsible container in the folded state is increased, but it can be reduced compared with the case where the opposite short side walls 3 and the opposite long side walls 2 are all tilted down as described above. The height of the collapsible container in its collapsed state.

Claims (1)

1. Foldable container has bottom, relative side's sidewall, and relative the opposing party's sidewall; This relative side's sidewall is connected in relative side's dyke of this bottom with hinge; This relative the opposing party's sidewall is connected in relative the opposing party's dyke of above-mentioned bottom with hinge; It is characterized in that: on the positive hinge member of the relative sidewall that is disposed at a side at least, form to float and prevent to use junction piece, simultaneously, formation be disposed at the hook of the hinge member of the dyke of an above-mentioned side's the relative cooresponding bottom of sidewall below form and can insert the above-mentioned breach recess that prevents with junction piece that floats, when with the Foldable container assembling boxlike-forming, above-mentioned float prevent that the extension ground that is contacted with above-mentioned hook with junction piece substantially from constituting.

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