JP2022183653A - folding container - Google Patents

Abstract

To provide a folding container capable of suppressing falling of a closing cover.SOLUTION: A folding container 1 includes: a bottom wall constitution part 2 including base parts 4, 5 protruding upward from each side part of a bottom wall part 3; and side wall parts 6, 7 connected to the base parts 4, 5. The base parts 4, 5 include bearing parts 8, 9 opening upward and to the inner side of the bottom wall constitution part 2, and for supporting hinge parts 13, 23 of the side wall parts 6, 7 rotatably. On the hinge parts 13, 23, closing covers 42, 51 for closing an inner peripheral opening part 30 of the bearing parts 8, 9 are mounted. A protruding strip part 61 for gap closing is provided protruding upward from a lower edge part of the inner peripheral opening part 30, and at the closing covers 42, 51, a concave part 62 is provided which can store at least part of the protruding strip part 61 for gap closing, in the case where the side wall parts 6, 7 are in an upright posture. In an assembly state of the folding container 1, a residual part 63 corresponding to the concave part 62 out of the closing covers 42, 51, and the protruding strip part 61 for gap closing are coming closer in the inside/outside direction of the bottom wall part 3.SELECTED DRAWING: Figure 8

Description

The present invention relates to a collapsible container used for transporting articles and the like.

2. Description of the Related Art Conventionally, as a container used for transportation of articles, etc., a bottom wall forming part having a substantially rectangular bottom wall part and base parts protruding upward along each side part of the bottom wall part. and a side wall portion rotatably connected to each base portion, which can be assembled into a box shape opening upward, and can be folded by tilting each side wall portion upward from the bottom wall portion. Containers are known. Further, each side wall portion has a hinge portion including a hinge body projecting downward from a lower side portion of the side wall portion and a shaft portion laterally projecting from a lower portion of the side surface of the hinge body. On the other hand, each base portion has a bearing portion that rotatably supports the hinge portion, and the bearing portion opens upward and toward the inner side of the bottom wall forming portion (inner peripheral side of the base portion). an insertion portion into which the hinge body can be inserted; It has branches.

Furthermore, when the collapsible container is assembled, the peripheral edge portion of the inner side opening of the bottom wall forming portion (hereinafter also referred to as the “inner peripheral opening”) of the bearing portion and the hinge main body of the hinge portion There may be gaps between On the other hand, there is a technique of attaching a closing cover to the hinge portion in order to close the gap (see, for example, Patent Document 1, etc.).

JP 2014-76839 A

By the way, the closing cover is shaped to close the inner peripheral opening of the bearing without any gap. For this reason, when a relatively large downward force acts on the side walls of the assembled folding containers (for example, when folding containers containing contents are stacked), the bottom edge of the closing cover does not move. and the lower edge of the inner peripheral opening are pressed against each other in the vertical direction, and the closing cover may come off.

SUMMARY OF THE INVENTION An object of the present invention is to provide a collapsible container capable of preventing the closing cover from coming off.

Hereinafter, each means suitable for solving the above object will be described separately. It should be noted that actions and effects specific to the corresponding means will be added as necessary.

Means 1. a bottom wall forming portion including a bottom wall portion having a substantially rectangular shape in plan view and a base portion protruding upward along each side portion of the bottom wall portion;
With respect to each of the base portions of the bottom wall forming portion, a standing posture of standing above each base portion and a lying posture of lying above the bottom wall portion are connected so as to be rotatably displaceable. A collapsible container comprising:
Each of the side wall portions has a hinge portion including a hinge body projecting downward from a lower side portion of the side wall portion, and a shaft portion laterally projecting from a lower portion of the side surface of the hinge body in the lateral width direction of the side wall portion. prepared,
Each of the base portions has an opening upward and an inner side of the bottom wall forming portion, and includes an insertion portion into which the hinge main body can be inserted, and an insertion portion into which the shaft portion can be inserted. a bearing portion that restricts inward displacement of the wall-constituting portion and includes a shaft support portion that allows rotational displacement of the shaft portion;
The hinge portion has an opening on the inner side of the bottom wall constituting portion of the corresponding bearing portion when the collapsible container is in the assembled state in which all the side wall portions are in the upright posture. A closing cover is attached to close the gap between the peripheral edge of the inner peripheral opening and the hinge body,
A ridge for closing a gap projecting upward from a lower edge of the inner peripheral opening is provided,
The closing cover is provided with a concave portion capable of accommodating at least a part of the gap closing ridge portion when the side wall portion is in the standing posture,
In the assembled state of the folding container, the surface of the closing cover corresponding to the recess, which faces the inward side of the bottom wall forming portion, and the gap blockage ridge portion are positioned inside and outside the bottom wall portion. Collapsible containers characterized in that they are arranged in abutment or close proximity in direction.

According to Means 1, in the assembled state of the folding container, the surface of the bottom wall constituting portion of the closing cover corresponding to the concave portion facing inward (the inner peripheral side of the base portion) and the gap closing ridge portion are in contact with or close to each other in the inner and outer directions of the bottom wall portion (thickness direction of the corresponding side wall portion), so that the lower side portion of the closing cover is located on the inner side of the bottom wall forming portion (the center of the bottom wall portion in plan view). side) is regulated. As a result, when a relatively large downward force acts on the side wall of the folded container in the assembled state (for example, when the folded containers containing the contents are stacked), the lower edge of the closing cover (or the upper edge of the recess) is in pressure contact with the lower edge of the inner peripheral opening (or the gap closing protrusion) (the closing cover is vertically compressed), the lower edge of the closing cover It is possible to prevent a situation in which the closing cover is disengaged from the hinge portion due to the displacement of the portion toward the inner side of the bottom wall forming portion. Therefore, the attached state of the closing cover can be stably maintained. For example, when the closing cover comes off, the gap between the peripheral edge of the inner peripheral opening and the hinge main body of the hinge portion is exposed. In addition, it is possible to prevent situations in which the contents of the folding container are caught in the gap and the closed cover is mixed in with the contents.

In addition, the portion of the closing cover that constitutes the recessed portion provided in the lower portion of the closing cover and the gap closing projection portion that protrudes upward from the lower edge portion of the inner peripheral opening are mutually arranged in the inner and outer directions of the bottom wall portion. Since they are arranged so as to overlap, it is possible to more reliably prevent the contents of the folding container from entering the gap between the peripheral edge portion of the inner peripheral opening and the hinge body of the hinge portion. Further, since the closing cover is provided with a concave portion, and when the side wall portion is in an upright position, at least a part of the gap closing protrusion can be accommodated in the concave portion of the closing cover, the closing cover can be positioned on the inner circumference. Positioned on the inner peripheral side of the opening, the gap between the peripheral edge of the inner peripheral opening and the hinge main body of the hinge portion can be reliably closed.

Means 2. In the assembled state of the folding container, the lower end of the hinge portion and the bottom wall forming portion are separated in the vertical direction, and the lower end of the hinge portion is displaced below the lower end of the hinge portion. Collapsible container according to means 1, characterized in that it is provided with a permissive space.

According to means 2, when a relatively large downward force is applied to the side wall of the collapsible container in the assembled state, the lower end of the hinge portion is pressed against the bottom wall forming portion, and the hinge portion is deformed. It is possible to prevent a situation in which damage or the like is caused, and in addition, a situation in which the closing cover attached to the hinge portion comes off. In addition, when the lower portion of the hinge portion enters the allowable space, the lower portion of the closing cover is also displaced (releasing) toward the allowable space. can be prevented from being strongly pressed. In particular, as described in the above means 1, since a part of the closing cover is positioned on the outer side (hinge side) of the bottom wall forming portion than the gap closing ridge portion, the upper edge of the recess is When the portion and the gap blockage projection portion are pressed against each other, the closing cover is prevented from being displaced inwardly of the bottom wall forming portion so as to separate from the hinge portion. It is possible to prevent falling off. Furthermore, when the hinge portion and the lower portion of the closing cover enter the allowable space, the closing cover and the gap closing protrusion overlap each other in the inner and outer directions of the bottom wall portion. Inward displacement of the bottom wall forming portion of the lower side portion of the closing cover is more reliably regulated, and the closing cover is less likely to come off from the hinge portion. Therefore, it is possible to more reliably prevent the closing cover from coming off when a relatively large downward force is applied to the side wall of the folding container in the assembled state.

Means 3. The closing cover is formed by providing the recess, and includes a lower side portion of the closing cover and a remaining portion forming an inner side surface of the bottom wall forming portion of the recess,
The remaining portion abuts or approaches the hinge portion (in terms of surface), and in the assembled state of the folding container, the gap closing ridge portion and the hinge portion overlap in the inner and outer directions of the bottom wall portion. 3. The collapsible container according to means 1 or 2, wherein the collapsible container is arranged so as to be sandwiched between.

According to the means 3, since the remaining portion contacts or approaches the hinge portion, it is possible to suppress outward deformation of the bottom wall forming portion of the remaining portion, thereby preventing deformation and damage of the remaining portion. can be prevented. In addition, in the assembled state of the folding container, the remaining portion is arranged so as to be sandwiched between the gap closing projection portion and the hinge portion in the inside-outside direction of the bottom wall portion. In other words, even if the remaining portion and the gap blockage ridge portion are pressed against each other in the inner and outer directions of the bottom wall portion, the remaining portion is reinforced by the hinge portion, and deformation of the remaining portion is suppressed. . Therefore, for example, the remaining portion may be deformed, and the state in which the gap blockage projection ridge portion restricts the inward displacement of the bottom wall forming portion of the lower side portion of the closing cover may be canceled. can be avoided.

Means 4. The collapsible container according to means 3, wherein the lower end of the hinge part is at the same height as or lower than the lower end of the residual part.

According to means 4, when a relatively large downward force is applied to the side wall of the collapsible container in the assembled state, the lower edge of the closure cover (the lower edge of the remaining portion) is pushed together with the lower edge of the hinge. abuts against the bottom wall-constituting portion (cooperates with the hinge portion to absorb the impact at the time of contact), or the lower end portion of the hinge portion abuts against the bottom wall-constituting portion while the lower end portion of the remaining portion is at the bottom wall It can be configured such that it does not come into contact with the component. Therefore, it is possible to prevent a situation in which the lower side portion of the closing cover (the lower end portion of the remaining portion) is pressed against the bottom wall forming portion and the closing cover falls off or is damaged.

Means 5. The gap blockage ridge includes a ridge sloping portion that slopes downward toward the outer side of the bottom wall forming portion,
5. Any one of means 1 to 4, wherein the concave portion has a closing cover sloped portion that slopes downward toward the outside of the bottom wall portion when the side wall portion is in the upright position. The collapsible container as described in Cr.

According to the means 5, when a relatively large downward force is applied to the side wall of the folding container in the assembled state, the recessed portion (upper edge) of the closing cover and the gap closing ridge portion are brought into contact with each other. The closing cover can be configured to be guided to the outside of the bottom wall component when pressed. Therefore, it is possible to make the closing cover more difficult to come off from the hinge portion, and to prevent the closing cover from coming off when a relatively large downward force is applied to the side wall portion of the collapsible container in the assembled state. can be reliably prevented.

1 is a perspective view of a collapsible container in an assembled state; FIG. 1 is a perspective view of a collapsible container in a folded state; FIG. It is an expansion exploded perspective view including a partial cross section of a folding container. FIG. 4 is a perspective view including a partial cross-section of the long-side sidewall and the inner surface side of the long-side closing cover. FIG. 4 is a perspective view including a partial cross section of the outer surface side of the long-side side wall portion and the long-side closing cover; FIG. 4 is a perspective view including a partial cross section of the inner side of the short side wall portion and the short side closing cover. FIG. 4 is a perspective view including a partial cross section of the outer surface side of the short side wall portion and the short side closing cover. Fig. 3 is an enlarged cross-sectional view showing long-side hinge portions and the like of the folding container in an assembled state; FIG. 4 is an enlarged cross-sectional view showing the long-side hinge portion and the like of the folding container in the folded state; Fig. 3 is an enlarged cross-sectional view showing the short-side hinge portion and the like of the collapsible container in the assembled state; FIG. 4 is an enlarged cross-sectional view showing the short-side hinge portion and the like of the folding container in the folded state;

An embodiment will be described below with reference to the drawings. As shown in FIGS. 1 and 2, the collapsible container 1 has a bottom wall portion 3 which has a substantially rectangular shape in a plan view, and protrudes upward from the bottom wall portion 3 along each long side of the bottom wall portion 3 . and a short-side base portion 5 projecting upward from the bottom wall portion 3 along each short side portion of the bottom wall portion 3. . Further, the collapsible container 1 is rotatably connected to the long side wall portions 6 and the short side base portions 5, respectively, which are rotatably connected to the long side base portions 4, respectively. and short side wall portions 7 . The bottom wall forming portion 2, the long side wall portion 6, and the short side wall portion 7 of the present embodiment are each integrally formed of polypropylene.

The long-side sidewall portion 6 and the short-side sidewall portion 7 are erected above the long-side base portion 4 and the short-side base portion 5, respectively (see FIG. 1). It is configured to be rotatably displaceable between a lying posture (see FIG. 2) where it is laid on the central portion side of the wall portion 3 . Further, as shown in FIG. 2, the projection length of the long-side base portion 4 from the bottom wall portion 3 is longer than the projection length of the short-side base portion 5 from the bottom wall portion 3. The formation position of the long side bearing portion 8 for rotatably supporting the side wall portion 6 is also higher than the formation position of the short side side bearing portion 9 for rotatably supporting the short side wall portion 7 . located above. Further, as shown in FIG. 1, the width of the long side wall portion 6 is substantially the same as the lengthwise width of the bottom wall forming portion 2, and the width of the short side wall portion 7 is equal to the width of the pair of long side bases. The distance between the parts 4 is substantially the same. For this reason, in the present embodiment, the folding container 1 in the assembled state in which all the long side wall portions 6 and the short side wall portions 7 are in an upright posture is arranged in such a manner that all the long side wall portions 6 and the short side wall portions 7 When the short-side side wall portions 7 are placed in the lying posture, the pair of short-side side wall portions 7 are placed on top of the bottom wall portion 3 and first displaced to the lying posture. , the long side wall portion 6 is superimposed on the short side side wall portion 7 so as to be displaced to the lying posture.

As shown in FIGS. 1, 3 to 5, etc., the long side wall portion 6 includes a substantially rectangular plate-shaped base wall portion 11 that constitutes the inner surface of the long side wall portion 6, and the base wall portion 11. A lower flange portion 12 protrudes outward from the lower side portion. Further, the long-side sidewall portion 6 is provided with a long-side hinge portion 13 that is rotatably connected to the long-side bearing portion 8 of the long-side base portion 4 . The long-side hinge portion 13 includes a hinge body 14 protruding downward from the lower flange portion 12 of the long-side side wall portion 6 and a lower end portion of both side surfaces of the hinge body 14 in the width direction of the long-side side wall portion 6 . and a pair of shaft portions 15 protruding in the direction.

On the other hand, as shown in FIG. An insertion portion 16 which opens on the inner peripheral side (center side of the bottom wall portion 3 in a plan view) into which the hinge body 14 can be inserted, and an insertion portion 16 into which the shaft portion 15 can be inserted. A shaft support portion 17 that restricts inward displacement and allows rotational displacement of the shaft portion 15 is provided.

Further, as shown in FIGS. 3, 6, and 7, the short side wall portion 7 also has a substantially rectangular plate-like base wall portion 21 that constitutes the inner surface of the short side wall portion 7, and a base wall portion 21 and a lower flange portion 22 protruding outward from the lower side portion thereof. Further, the short-side sidewall portion 7 includes a short-side hinge portion 23 that is rotatably connected to the short-side bearing portion 9 of the short-side base portion 5. The short-side hinge portion 23 is A hinge body 24 projecting downward from the lower flange portion 22 of the short-side side wall portion 7 and shaft portions 25 projecting from both side surfaces of the hinge body 24 are provided. Further, as shown in FIG. 3, the short-side bearing portion 9 includes an insertion portion 26 into which the hinge main body 24 of the short-side hinge portion 23 is inserted, and a shaft portion 25 of the short-side hinge portion 23 that can be rotatably displaced. It has a shaft support portion 27 supported by. Hereinafter, the inner side opening of the bottom wall forming portion 2 of the insertion portion 16 and the insertion portion 26 of the long side bearing portion 8 and the short side bearing portion 9 will be referred to as an "inner peripheral opening portion 30". called.

Further, as shown in FIG. 1 , the long side wall portion 6 is provided with an engaging wall portion 31 projecting inwardly of the folding container 1 from the side portion of the inner surface of the base wall portion 11 . The locking wall portion 31 is provided with an insertion hole portion 32 penetrating the long-side side wall portion 6 in the lateral width direction. Further, the long side wall portion 6 is connected to the surface of the locking wall portion 31 on the side of the lateral width direction central portion of the long side wall portion 6, and has a substantially rectangular cylindrical shape that opens to the inner side of the folding container 1. A lock engaging portion (not shown) is provided.

On the other hand, on both sides of the outer surface of the short side wall portion 7, the thickness of the outer surface side of the short side wall portion 7 is omitted. and a wall portion 33 to be engaged that substantially abuts against the wall portion 31 of , and a wall portion to be engaged 33 that protrudes outward from the outer surface of the wall portion 33 to be engaged. An insertion protrusion 34 to be inserted into the insertion hole 32 is provided. This configuration prevents the short side wall portion 7 and the long side wall portion 6 from tilting outwardly of the collapsible container 1, and also prevents the long side wall portion 6 and the short side wall portion from being tilted outward. 7 is restricted in the vertical direction.

Furthermore, a lock mechanism 35 is provided on the outer surface side of the short side wall portion 7 to prevent the short side wall portion 7 from tilting inward, thereby maintaining the assembled state of the folding container 1 . there is In the assembled state of the folding container 1, the lock mechanism 35 has a protruding position where it is inserted into the lock engaging portion of the long side wall portion 6 to be locked, and a locked state when it is released from the lock engaging portion. A pair of left and right slide pieces 36 configured to be displaceable to the retracted position, and an operation portion 37 capable of displacing the pair of left and right slide pieces 36 to the retracted position at once.

As shown in FIG. 2, in this embodiment, seven long side hinge portions 13 are provided for each long side wall portion 6 . Of these, as shown in FIG. 1, the long-side hinge portion 13 (where molding accuracy is relatively high) is provided at the center in the width direction of the long-side sidewall portion 6, and the long-side sidewall portion 6 is in the upright posture. , the part of the hinge body 14 on the inner side of the folding container 1 is positioned on the inner peripheral side of the inner peripheral opening 30 of the corresponding long side bearing 8, and the inner peripheral opening 30 is It has a closed shape. On the other hand, as shown in FIGS. 5, 8, etc., the remaining long-side hinge portion 13 (hereinafter also referred to as “long-side general hinge portion 41”) has an inner surface (lower flange portion) of the hinge main body 14. 12) is located outside the inner surface of the long side wall portion 6 (base wall portion 11), and the width of the hinge main body 14 is equal to that of the long side bearing portion 8. It is configured to be slightly smaller than the width of the inner peripheral opening 30 .

As shown in FIGS. 1, 3, 4, etc., a long-side closing cover 42 is attached to the inner surface of the long-side general hinge portion 41 of the present embodiment. As shown in FIGS. 8 and 10, when the collapsible container 1 is in the assembled state, the hinge main body 14 of the long-side general hinge portion 41 and the inner peripheral opening 30 of the corresponding long-side bearing portion 8 are separated. The long-side closing cover 42 is configured to close the gap with the peripheral portion. As shown in FIGS. 3 to 5 and 10, the long-side closing cover 42 includes a closing plate portion 43 having substantially the same shape as the inner peripheral opening portion 30 of the corresponding long-side bearing portion 8, and a closing plate portion 43. 43 to the long-side general hinge portion 41; As shown in FIG. 8 , in the assembled state of the folding container 1 , the closing plate portion 43 is arranged on the inner peripheral side of the inner peripheral opening portion 30 of the long-side bearing portion 8 .

4, 5, and 8, the mounting portion 44 includes a pair of mounting pieces 45 protruding from the outer surface side of the closing plate portion 43, and a pair of mounting pieces 45 on the side spaced apart from the tip end portions of the pair of mounting pieces 45. and a claw portion 46 protruding to the side. Further, as shown in FIG. 8 and the like, the outer surface of the long-side hinge portion 13 (the outer edge of the rib forming the long-side hinge portion 13) is aligned with the outer surface of the long-side sidewall portion 6 (long-side sidewall portion). 6), and is positioned inward of the folding container 1 from the outer surface of the long side wall portion 6. As shown in FIG. When the long-side closing cover 42 is attached to the long-side hinge portion 13 , the claw portion 46 is configured to fit inside the long-side hinge portion 13 rather than the outer surface of the long-side hinge portion 13 . .

In addition, as shown in FIG. 1, the short side wall portion 7 is provided with five short side hinge portions 23, and as shown in FIGS. A short-side closing cover 51 is attached to the inner surfaces of the short-side hinge portions 23 other than the short-side hinge portion 23 provided at the center portion in the width direction of the short-side side wall portion 7 . As shown in FIGS. 8 and 10, when the collapsible container 1 is in the assembled state, the hinge main body 24 of the short-side hinge portion 23 and the peripheral edge of the inner peripheral opening 30 of the corresponding short-side bearing portion 9 are formed. (The short-side hinge portion 23 provided at the center in the width direction of the short-side side wall portion 7 is configured to close the gap between the short-side closing cover 51 and the short-side side wall portion 7 . The gap is closed by the hinge portion 23 itself).

The short-side closing cover 51 basically has the same configuration as the long-side closing cover 42, and is a closing plate having substantially the same shape as the inner peripheral opening 30 of the corresponding short-side bearing portion 9. A portion 52 and an attachment portion 53 for attaching the closing plate portion 52 to the short side hinge portion 23 . Further, as shown in FIG. 10 and the like, the outer surface of the short-side hinge portion 23 (the outer edge of the rib forming the short-side hinge portion 23) is aligned with the outer surface of the short-side sidewall portion 7 (the short-side sidewall portion). 7), and is positioned inward of the collapsible container 1 from the outer surface of the short side wall portion 7. As shown in FIG. The long-side closing cover 42 and the short-side closing cover 51 are integrally formed of polypropylene.

Now, as shown in FIGS. 3, 8, 10, etc., the long-side bearing portion 8 and the short-side bearing portion 9 of the bottom wall-constituting portion 2 are provided from the lower edge portion of the inner peripheral opening portion 30. A gap blockage projection 61 is provided that protrudes upward. The gap closing projection 61 is provided over the entire width of the inner peripheral opening 30 so as to connect the side edges of the inner peripheral opening 30 .

On the other hand, as shown in FIGS. 4 to 8, 10, etc., the long-side closing cover 42 and the short-side closing cover 51 are provided with the long-side sidewall portion 6 and the short-side sidewall portion. A concave portion 62 is provided which opens downward and inwardly of the bottom wall forming portion 2 when 7 is in an upright posture, and is capable of accommodating at least a portion of the gap closing projection portion 61 . The long-side closing cover 42 and the short-side closing cover 51 are provided with the recesses 62 so that the lower sides of the long-side closing cover 42 and the short-side closing cover 51 and the recesses 62 The remaining portion 63 forming the inner surface of the bottom wall forming portion 2 is provided. In the assembled state of the folding container 1, the long-side closing cover 42 and the short-side closing cover 51 of the part corresponding to the concave portion 62 (remaining portion 63) face the inner side of the bottom wall-constituting portion 2. , and the gap blockage ridges 61 are arranged close to each other in the inner and outer directions of the bottom wall 3 (thickness directions of the corresponding side walls 6 and 7).

8 and 10, when the long-side closing cover 42 and the short-side closing cover 51 are attached to the long-side hinge portion 13 and the short-side hinge portion 23, The remaining portion 63 abuts (or approaches) the long-side hinge portion 13 and the short-side hinge portion 23 (hinge main body 14 and hinge main body 24). Furthermore, in the assembled state of the folding container 1, the remaining portions 63 of the long-side closing cover 42 and the short-side closing cover 51 are arranged in the inner and outer directions of the bottom wall portion 3 so that the long-side bearing portion 8 and the remaining portion 63 of the short-side closing cover 51 It is arranged so as to be sandwiched between the gap closing protrusions 61 of the short-side bearing portion 9 , the long-side hinge portion 13 , and the short-side hinge portion 23 .

In addition, when the long-side sidewall portion 6 and the short-side sidewall portion 7 are in the upright posture, the lower ends of the long-side hinge portion 13 and the short-side hinge portion 23 are located above the remaining portion 63 . It has the same height as the lower end. Furthermore, in the assembled state of the foldable container 1, the bottom wall-constituting portion 2 is vertically separated from the lower ends of the long-side hinge portions 13 and the short-side hinge portions 23, and the long-side hinge portions 13, A permissible space 64 is provided below the lower end of the short-side hinge 23 to allow the long-side hinge 13 and the short-side hinge 23 to displace.

In addition, the gap blockage projection 61 is inclined downward toward the outer side of the bottom wall forming portion 2 (the inner peripheral side of the base portions 4 and 5; the centrifugal direction side in plan view of the bottom wall portion 3). A projected sloping portion 65 is provided. Further, the recessed portion 62 has a closing cover sloped portion 66 that slopes downward toward the outer side of the bottom wall forming portion 2 when the long side wall portion 6 and the short side side wall portion 7 are in the upright posture. I have. In the present embodiment, the surface of the remaining portion 63 on the inner side of the bottom wall forming portion 2 forms the closing cover inclined portion 66 . In addition, when the long side wall portion 6 and the short side wall portion 7 are in the upright posture, the closing cover inclined portion 66 and the projected ridge inclined portion 65 are substantially offset from each other in the assembled state of the folding container 1. They extend in parallel and face each other in both the vertical direction and the inner and outer directions of the bottom wall portion 3 . In addition, the inner side surface of the bottom wall forming portion 2 of the gap blockage ridge portion 61 is configured to extend at an angle relatively close to the vertical direction. Further, of the remaining portions 63 of the long-side closing cover 42 and the short-side closing cover 51, the outer surface of the bottom wall-constituting portion 2 is formed by the long-side hinge portion 13 and the short-side hinge portion. It extends substantially vertically in parallel with the inner surface of 23 .

In addition, in the assembled state of the folding container 1, the distance between the closing cover inclined portion 66 and the protrusion inclined portion 65 in the up-down direction (vertical direction) is and the bottom wall forming part 2. When a downward force is applied to the long-side sidewall portion 6 (short-side sidewall portion 7 ), the long-side hinge portion 13 (short-side hinge portion 23 ) moves toward the bottom wall-constituting portion 2 . , and the remaining portion 63 (closing cover sloped portion 66) and the gap blockage protrusion portion 61 (protrusion sloped portion 65) may come into contact with each other. At this time, the remaining portion 63 is guided outward and downward from the bottom wall-constituting portion 2 toward the allowable space 64 side due to the inclined shapes of the closing cover inclined portion 66 and the protrusion inclined portion 65. The lower end portion of the long-side hinge portion 13 (short-side hinge portion 23 ) is also displaced toward the allowable space 64 so as to approach the bottom wall-constituting portion 2 .

As shown in FIG. 10, on the inner surface side of the closing plate portion 52 of the short-side closing cover 51, there is provided a recessed portion 67 which is recessed outwardly of the folding container 1 at the middle position in the vertical direction. . As shown in FIG. 11 , when the short side wall portion 7 is laid down, at least a portion of the short side bearing portion 9 including the upper portion of the clearance closing protrusion 61 is accommodated in the concave portion 67 . It looks like it will be done. As a result, in the folded state of the foldable container 1, while avoiding interference between the short-side closing cover 51 and the gap closing protrusion 61, the inner surface of the short-side side wall portion 7 (base wall portion 21) and The upper surface of the bottom wall portion 3 can be brought into contact with the surface, and the height of the foldable container 1 in the folded state can be reduced while suppressing damage, etc., to the gap blockage ridge portion 61 . there is In addition, as shown in FIG. 4 and the like, the inner surface of the closing plate portion 43 of the long-side closing cover 42 is also provided with a recessed portion in a range including the central portion of the closing plate portion 43. While preventing the closing plate portion 43 of the long-side closing cover 42 from bulging inwardly of the folding container 1, the strength of the long-side closing cover 42 is improved.

Furthermore, the outer surface of the short-side hinge portion 23 is located on the inner side of the folding container 1 with respect to the outer surface of the short-side side wall portion 7 (see FIG. 10). is folded, a space is formed above the short side hinge portion 23 and the long side wall portion 6 . In other words, when the folding container 1 is folded, even if the short-side closing cover 51 and the gap closing protrusion 61 come into contact with each other, there is still room for the short-side closing cover 51 to be displaced upward. As a result, pressure contact between the short-side closing cover 51 and the gap blockage ridge 61 and damage to the gap blockage ridge 61 are suppressed.

Further, as shown in FIG. 8 and the like, the long side wall portion 6 of the present embodiment is configured so that the lower portion of the base wall portion 11 is slightly inclined downward toward the outside of the folding container 1 . there is For this reason, the long-side hinge portion 13 is also located on the outer side of the folding container 1 from the upper portion of the inner surface of the base wall portion 11. As shown in FIG. 9, when the folding container 1 is folded, When the inner surface of the long side wall portion 6 abuts against and is supported by the outer surface of the short side wall portion 7 , the long side closing cover 42 and the clearance closing protrusion 61 of the long side bearing portion 8 are brought into contact with each other. They are separated vertically. With this configuration, interference between the long-side closing cover 42 and the clearance-blocking projection 61 of the long-side bearing portion 8 is avoided, and damage to the clearance-blocking projection 61 is suppressed. It's becoming

As described in detail above, according to the present embodiment, in the assembled state of the folding container 1, the portion (remaining portion 63) of the long-side closing cover 42 (short-side closing cover 51) corresponding to the concave portion 62 is The inwardly facing surface of the bottom wall forming portion 2 and the gap blockage projection 61 are configured to be close to each other in the inside and outside directions of the bottom wall portion 3 . Therefore, the displacement of the lower side portion of the long-side closing cover 42 (the short-side closing cover 51 ) toward the inner side of the bottom wall forming portion 2 is restricted. As a result, when a relatively large downward force acts on the long-side side wall portions 6 (short-side side wall portions 7) of the folded container 1 in the assembled state (for example, when the contents are folded in a state where When the containers 1 are stacked together, the upper edge of the concave portion 62 (in this example, the oblique portion of the closing cover 66) is in pressure contact with the gap closing protrusion 61 (the closing covers 42 and 51 are compressed vertically). ), the lower side of the long-side closing cover 42 (short-side closing cover 51) is displaced toward the inside of the bottom wall-constituting portion 2, and the long-side closing cover 42 (short-side closing cover 51) ) is detached from the long-side hinge portion 13 (short-side hinge portion 23). Therefore, the attachment state of the closing covers 42 and 51 can be stably maintained. The gap between the (short side hinge part 23) and the hinge body 14 (hinge body 24) is exposed, and the contents of the folding container 1 are caught in the gap, and the closing covers 42 and 51 get mixed in with the contents. situation can be prevented.

In addition, the remaining portion 63 of the long-side closing cover 42 (short-side closing cover 51 ) and the gap closing projection 61 protruding upward from the lower edge of the inner peripheral opening 30 form the bottom wall portion 3 . Since the collapsible container 1 is arranged so as to overlap each other in the inner and outer directions, the contents of the folding container 1 are arranged at the peripheral edge of the inner peripheral opening 30 and the hinge main body 14 of the long side hinge portion 13 (short side hinge portion 23) It is possible to more reliably prevent entry into the gap between. Further, the long-side closing cover 42 (short-side closing cover 51) is provided with a concave portion 62 so that when the long-side side wall portion 6 (short-side side wall portion 7) is in the upright position, the long-side closing cover Since at least a part of the gap closing protrusion 61 can be accommodated in the recessed portion 62 of 42, the long side closing cover 42 (short side closing cover 51) is placed on the inner peripheral side of the inner peripheral opening 30. , and the gap between the peripheral edge of the inner peripheral opening 30 and the hinge main body 14 of the long-side hinge portion 13 (short-side hinge portion 23) can be reliably closed.

In the assembled state of the collapsible container 1, the lower end of the long-side hinge portion 13 (short-side hinge portion 23) and the bottom wall forming portion 2 are separated in the vertical direction, and the long-side hinge portion 13 (short-side hinge portion 23) Below the lower end portion of the hinge portion 23), an allowance space 64 is provided to allow displacement of the lower end portion of the long-side hinge portion 13 (short-side hinge portion 23). Therefore, when a relatively large downward force is applied to the long-side sidewall 6 (short-side sidewall 7) of the folded container 1 in the assembled state, the long-side hinge 13 (short-side The lower end of the side hinge portion 23) comes into pressure contact with the bottom wall forming portion 2, causing deformation or damage to the long side hinge portion 13 (short side hinge portion 23). It is possible to prevent a situation in which the long-side closing cover 42 (short-side closing cover 51) attached to the (short-side hinge portion 23) comes off. In addition, when the lower part of the long-side hinge part 13 (short-side hinge part 23) enters the allowable space 64, the lower part of the long-side closing cover 42 (short-side closing cover 51) also enters the allowable space 64 side. Since the upper edge portion of the concave portion 62 and the clearance closing protrusion portion 61 are strongly pressed against each other, it is possible to prevent the upper edge portion of the recess portion 62 from being strongly pressed against the gap closing protrusion portion 61 . In particular, the remaining portion 63 of the long-side closing cover 42 (short-side closing cover 51) is positioned further outside the bottom wall-constituting portion 2 (long-side hinge portion 13 (short-side side) than the gap closing protrusion 61. hinge portion 23)), when the upper edge portion of the recess 62 and the clearance closing protrusion portion 61 are pressed against each other, the long side closing cover 42 (the short side closing cover 51 ) is displaced toward the inner side of the bottom wall forming portion 2 so as to separate from the long side hinge portion 13 (short side hinge portion 23). It is possible to prevent the side closing cover 51) from coming off. Furthermore, when the long-side hinge portion 13 (short-side hinge portion 23) and the lower portion of the long-side closing cover 42 (short-side closing cover 51) enter the allowable space 64, the long-side closed Since the area where the cover 42 (short side closing cover 51) and the gap closing protrusion 61 overlap each other in the inward and outward direction of the bottom wall portion 3 increases, the long side closing cover 42 (short side closing cover 51) The inward displacement of the bottom wall-constituting portion 2 at the lower side of the side-side closing cover 51) is more reliably regulated, and the long-side closing cover 42 (short-side closing cover 51) is secured to the long-side hinge portion 13. A state in which it is more difficult to come off from (the short-side hinge portion 23) can be achieved. Therefore, it is possible to more reliably prevent the closing covers 42 and 51 from coming off when a relatively large downward force is applied to the side walls 6 and 7 of the folded container 1 in the assembled state. .

Further, the remaining portion 63 of the long-side closing cover 42 (short-side closing cover 51) abuts (or approaches) the long-side hinge portion 13 (short-side hinge portion 23). Therefore, deformation of the remaining portion 63 toward the outer side of the bottom wall forming portion 2 is restricted, and damage to the remaining portion 63 can be prevented. In addition, in the assembled state of the folding container 1, the remaining portion 63 is sandwiched between the gap closing protrusion portion 61 and the long side hinge portion 13 (short side hinge portion 23) in the inner and outer directions of the bottom wall portion 3. are arranged as follows. In other words, even if the remaining portion 63 and the clearance closing protrusion 61 are pressed against each other in the inner and outer directions of the bottom wall portion 3, the remaining portion 63 is reinforced by the long side hinge portion 13 (short side hinge portion 23). , and deformation of the remaining portion 63 is suppressed. Therefore, for example, the remaining portion 63 is deformed, etc., and the clearance blocking protrusion 61 pushes the lower side of the long side closing cover 42 (short side closing cover 51) toward the inner side of the bottom wall forming portion 2. It is possible to avoid a situation in which the state in which the displacement of is restricted is cancelled.

In addition, when the long-side sidewall portion 6 (short-side sidewall portion 7) is in the standing posture, the lower end portion of the long-side hinge portion 13 (short-side hinge portion 23) is the lower end portion of the remaining portion 63. located at the same height as For this reason, when a relatively large downward force is applied to the long side wall portion 6 (short side wall portion 7) of the folding container 1 in the assembled state, the long side closing cover 42 (short side The lower edge of the side closing cover 51) (the lower end of the remaining portion 63) contacts the bottom wall forming portion 2 together with the lower edge of the long side hinge portion 13 (short side hinge portion 23) (long side hinge portion 13). (It cooperates with the short-side hinge portion 23 to absorb the impact at the time of contact). Therefore, the lower side portion (lower end portion of the remaining portion 63) of the long-side closing cover 42 (short-side closing cover 51) is pressed against the bottom wall forming portion 2, and the long-side closing cover 42 (short-side closing cover 51) is pressed against the bottom wall-constituting portion 2. ) can be prevented from falling off or being damaged.

In addition, the gap blockage protrusion 61 includes a protrusion inclined portion 65 that slopes downward toward the outer side of the bottom wall forming portion 2, and the concave portion 62 is provided with the long side wall portion 6 (short side wall portion 7) is in the standing posture, the closing cover inclined portion 66 (in this example, the surface of the remaining portion 63 on the inner side of the bottom wall-constituting portion 2) that inclines downward toward the outside of the bottom wall-constituting portion 2. ). For this reason, when a relatively large downward force is applied to the long side wall portion 6 (short side wall portion 7) of the folding container 1 in the assembled state, the long side closing cover 42 (short side When the concave portion 62 (upper edge portion) of the side closing cover 51) and the clearance closing projection portion 61 are pressed against each other, the long side closing cover 42 (short side closing cover 51) closes to the bottom wall forming portion 2. can be configured to be guided to the outer side of the Therefore, the long-side closing cover 42 (short-side closing cover 51) is made more difficult to come off from the long-side hinge portion 13 (short-side hinge portion 23) (the function of preventing the closing covers 42 and 51 from coming off is improved). 2), which makes it more certain that the closing covers 42, 51 will come off when a relatively large downward force is applied to the side walls 6, 7 of the collapsible container 1 in the assembled state. can be prevented.

In addition, it is not limited to the description content of the said embodiment, For example, you may implement as follows. Of course, other applications and modifications not exemplified below are naturally possible.

(a) In the above embodiment, the number, arrangement, width, etc. of the long-side hinge portions 13 and the short-side hinge portions 23 are not particularly limited, and can be changed as appropriate. Furthermore, the number of the long-side hinge portions 13 and the short-side hinge portions 23 to which the long-side closing cover 42 and the short-side closing cover 51 are attached is not particularly limited, and may be changed as necessary. can be changed as appropriate.

In the above-described embodiment, the height positions of the pair of short side wall portions 7 in the lying posture are aligned. may be configured. Furthermore, although the height positions of the pair of long side wall portions 6 in the lying posture are aligned, for example, the long side wall portions 6 in the lying posture may overlap vertically. . In addition, it is also possible to embody a collapsible container in which the short side walls overlap the long side walls in the folded state.

(b) In the above-described embodiment, when the folding container 1 is assembled, the bottom wall-constituting portion 2 of the portion (remaining portion 63) corresponding to the concave portion 62 of the long-side closing cover 42 (short-side closing cover 51) is The surface facing inward and the gap closing projection 61 are configured to be close to each other in the inner and outer directions of the bottom wall portion 3, but they may be designed to substantially abut each other. Furthermore, in the assembled state of the foldable container 1, the entire clearance closing protrusion 61 may be accommodated in the corresponding recess 62. As shown in FIG. In the above-described embodiment, the vertical width of the allowable space 64 provided between the lower end of the long-side hinge portion 13 (short-side hinge portion 23) and the bottom wall-constituting portion 2 when the folding container 1 is assembled. is larger than the vertical interval between the remaining portion 63 (the oblique portion 66 of the closing cover) and the gap closing projection portion 61, but it is also possible to make them the same. Further, in the above-described embodiment, the lower end of the long-side hinge portion 13 (short-side hinge portion 23) is positioned at the remaining portion when the long-side sidewall portion 6 (short-side sidewall portion 7) is in the upright posture. Although it has the same height as the lower end portion of 63 , it may be configured to be positioned below the lower end portion of remaining portion 63 .

(c) In the above-described embodiment, the gap closing protrusion 61 is formed with the protrusion inclined portion 65 that slopes downward toward the outer side of the bottom wall forming portion 2 , and the recess 62 is formed with the bottom wall forming portion 2 outside the bottom wall forming portion 2 . Although the closing cover sloped portion 66 is formed downwardly sloped toward one side, only one of them may be formed. In addition, in order to suppress damage or the like when the projected slanted portion 65 and the closing cover slanted portion 66 are pressed against each other, and to minimize the gap between the slanted projected portion 65 and the closing cover slanted portion 66, Preferably, both the ridge ramp 65 and the closure cover ramp 66 are provided, and preferably the ridge ramp 65 and the closure cover ramp 66 extend parallel to each other.

(d) The folding container 1 and the closing covers 42 and 51 of the above embodiment are made of polypropylene, but may be made of other resin materials such as polyethylene, PET, and polyamide.

DESCRIPTION OF SYMBOLS 1... Folding container 2... Bottom wall structure part 3... Bottom wall part 4... Long side base part 5... Short side base part 6... Long side side wall part 7... Short side side wall part 8 Long-side bearing portion 9 Short-side bearing portion 13 Long-side hinge portion 14 Hinge main body 15 Shaft portion 16 Insertion portion 17 Axial support portion 23 Short-side hinge Part 30... Inner peripheral opening 42... Long side closing cover 51... Short side closing cover 61... Gap closing protrusion 62... Recess 63... Remaining part 64... Allowable space 65... Projected sloping portion, 66... Closing cover sloping portion.

Claims (5)

a bottom wall forming portion including a bottom wall portion having a substantially rectangular shape in plan view and a base portion protruding upward along each side portion of the bottom wall portion;
With respect to each of the base portions of the bottom wall forming portion, a standing posture of standing above each base portion and a lying posture of lying above the bottom wall portion are connected so as to be rotatably displaceable. A collapsible container comprising:
Each of the side wall portions has a hinge portion including a hinge body projecting downward from a lower side portion of the side wall portion, and a shaft portion laterally projecting from a lower portion of the side surface of the hinge body in the lateral width direction of the side wall portion. prepared,
Each of the base portions has an opening upward and an inner side of the bottom wall forming portion, and includes an insertion portion into which the hinge main body can be inserted, and an insertion portion into which the shaft portion can be inserted. a bearing portion that restricts inward displacement of the wall-constituting portion and includes a shaft support portion that allows rotational displacement of the shaft portion;
The hinge portion has an opening on the inner side of the bottom wall constituting portion of the corresponding bearing portion when the collapsible container is in the assembled state in which all the side wall portions are in the upright posture. A closing cover is attached to close the gap between the peripheral edge of the inner peripheral opening and the hinge body,
A ridge for closing a gap projecting upward from a lower edge of the inner peripheral opening is provided,
The closing cover is provided with a concave portion capable of accommodating at least a part of the gap closing ridge portion when the side wall portion is in the standing posture,
In the assembled state of the folding container, the surface of the closing cover corresponding to the recess, which faces the inward side of the bottom wall forming portion, and the gap blockage ridge portion are positioned inside and outside the bottom wall portion. Collapsible containers characterized in that they are arranged abutting or adjacent in direction. In the assembled state of the folding container, the lower end of the hinge portion and the bottom wall forming portion are separated in the vertical direction, and the lower end of the hinge portion is displaced below the lower end of the hinge portion. 2. The collapsible container according to claim 1, wherein an allowance space is provided to allow. The closing cover is formed by providing the recess, and includes a lower side portion of the closing cover and a remaining portion forming an inner side surface of the bottom wall forming portion of the recess,
The remaining portion abuts or approaches the hinge portion, and is sandwiched between the gap closing protrusion portion and the hinge portion in the inner and outer directions of the bottom wall portion in the assembled state of the folding container. 3. A collapsible container according to claim 1 or 2, characterized in that it is arranged in such a way that 4. The collapsible container according to claim 3, wherein the lower end of the hinge part is positioned at the same height as or lower than the lower end of the residual part. The gap blockage ridge includes a ridge sloping portion that slopes downward toward the outer side of the bottom wall forming portion,
5. The method according to any one of claims 1 to 4, wherein the concave portion has a closing cover inclined portion that is inclined downward toward the outer side of the bottom wall forming portion when the side wall portion is in the upright posture. A collapsible container according to any of the preceding claims.

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