JP7084618B2 - container - Google Patents

Description

The present disclosure relates to a container in which a flap is hinged to a rectangular parallelepiped container body having an open upper surface.

Generally, this type of container has a rectangular planar shape, and a flap is hinged to the upper edge of a pair of long side side walls for reinforcement (see, for example, Patent Document 1).

Japanese Unexamined Patent Publication No. 2009-126574 (FIGS. 2 and 10)

However, there is a demand for the development of a container having higher strength than the above-mentioned conventional container.

The invention of claim 1 made to solve the above problem has a pair of first side walls facing each other in the first horizontal direction, a pair of second side walls facing each other in the second horizontal direction, and a bottom wall. A rectangular container body having an open upper surface and extending along the upper edge of the pair of first side walls and hinged to the upper edge of the pair of first side walls, respectively, are connected to the first side wall. A pair of first flaps that rotate between a first rotation position that projects substantially horizontally from the side wall and a second rotation position that is approximately 90 degrees or more outward from the first rotation position, and a pair of the above-mentioned pair. A first rotation position that extends along the upper edge of the second side wall and is hinged to each of the pair of upper edges of the second side wall and projects substantially horizontally from the second side wall, and from there. A pair of second flaps that rotate between a second rotation position that is approximately 90 degrees or more away from the outside, and a pair of first flaps and a pair of second flaps that rotate at the first rotation position. The opening in the flap surrounded by the above, and the first horizontal direction and the second flap provided in the first flap and the second flap and fitted to each other in the vertical direction while being arranged at the first rotation position. A container having a flap engaging portion that restricts movement in at least one direction in the second horizontal direction to each other .

According to the second aspect of the present invention, the first flap and the second flap are provided with horizontally adjacent portions that are horizontally adjacent to each other in a state where they are both arranged at the first rotation position, and the first flap and the second flap are provided. The flap engaging portion of one of the second flaps protrudes from the horizontal adjacent portion, and the first flap and the other flap engaging portion of the second flap have an opening in the horizontal adjacent portion. The container according to claim 1 , which penetrates the other of the first flap and the second flap in the thickness direction.

According to the third aspect of the present invention, the first flap and the second flap are provided with horizontally adjacent portions that are horizontally adjacent to each other in a state where they are both arranged at the first rotation position, and the first flap and the second flap are provided. The flap engaging portion of one of the second flaps protrudes from the horizontal adjacent portion, and the first flap and the other flap engaging portion of the second flap have an opening in the horizontal adjacent portion. The container according to claim 1 , wherein the first flap and the other outer surface or inner surface of the second flap are recessed and formed.

According to the fourth aspect of the present invention, the first flap and the second side wall are provided with a side wall engaging portion that engages with each other to restrict horizontal movement, and the second flap is the first. The container according to any one of claims 1 to 3 , which fits between the pair of first flaps in a rotating position.

In the invention of claim 5 , the upper surfaces of the first side wall and the second side wall are arranged substantially flush with each other, and the upper surfaces of the first flap and the second flap arranged at the first rotation position are The container according to claim 1 , wherein the first side wall and the second side wall are arranged substantially flush with each other below the upper surface of the first side wall and the second side wall.

In the container of claim 1, flaps are hinged to four side walls. As a result, all the flaps can be arranged at the first rotation position so as to project substantially horizontally from each side wall to regulate the bending deformation of all the side walls, and the strength is higher than in the conventional case. In addition, luggage can be taken in and out through the opening inside the flap surrounded by the flap.

Further , since the flap engaging portions of the first and second flaps are fitted to each other and restrict the movement in the horizontal direction to each other, the strength of the container is further increased.

In the container of claim 2 , regardless of whether one of the first and second flaps is arranged in the first rotation position or the second rotation position, the other can be rotated to an arbitrary position. It can be done and has excellent operability.

In the container of claim 3 , when the flap in which the flap engaging portion is recessed is rotated upward from the state where the first and second flaps are arranged in the first rotation position, the flap engaging portion is formed. The bottom of the flap allows the flap engaging portion of the other flap to be pushed upwards to rotate both flaps upwards at once.

According to the fourth aspect of the container, since the first flap and the second side wall are restricted from moving in the horizontal direction by the engagement of the side wall engaging portion, the strength of the container can be further increased.

In the container of claim 5 , the upper surfaces of the first flap and the second flap are substantially flush with each other and are arranged below the upper surfaces of the first side wall and the second side wall, so that another container can be placed on the container. When stacking, the upper surfaces of the first flap and the second flap can be smoothly slid, and the stacking work becomes easy.

Perspective view of the container according to the first embodiment (A) perspective view of the lower surface side of the container, (B) partially enlarged perspective view of the lower surface side of the container. Perspective view of the container with the flaps upright Perspective view of the container with only the second side wall folded Perspective view of the folded container Partially enlarged perspective view of a container with only the second side wall folded Partial enlarged perspective view of a folded container Partial enlarged perspective view of the container where the first flap stands up and the second flap collapses Partially enlarged perspective view of a container with both the first and second flaps upright (A) Partially enlarged perspective view of the front side of the first flap, (B) Partially enlarged perspective view of the back side of the first flap. (A) Partially enlarged perspective view of the front side of the second flap, (B) Partially enlarged perspective view of the back side of the second flap. Partially enlarged perspective view of the second flap in the standing posture and the first flap in the tilted posture Partially enlarged perspective view with the flap in a horizontal position Partially enlarged plan view with the flap in the horizontal position Partially enlarged perspective view of the container of the second embodiment Enlarged perspective view of a partial breakage of the container Partially enlarged plan view of the container of the third embodiment Partially enlarged plan view of the container of the fourth embodiment Partially enlarged plan view of the container of the fifth embodiment Partially enlarged plan view of the container of the sixth embodiment

[First Embodiment]
Hereinafter, embodiments of the container 10 shown in FIGS. 1 to 14 will be described. As shown in FIG. 1, the container 10 of the present embodiment has a rectangular parallelepiped container body 10H having a rectangular planar shape and an open upper surface. Embankments 31 and 32 project from the outer edges of the four sides of the bottom wall 30 of the container body 10H, respectively, and a pair of first side walls 11 and 11 are provided on the pair of long side embankments 31 and 31. While hinged, a pair of second side walls 21 and 21 are hinged to a pair of short-sided embankments 32 and 32.

Hereinafter, when the first side wall 11 and the second side wall 21 are not distinguished, they are simply referred to as "side walls 11 and 21". Further, the opposite direction of the pair of the first side walls 11 and 11 is referred to as the first horizontal direction H1, and the opposite direction of the pair of the second side walls 21 and 21 is referred to as the second horizontal direction H2. In the present embodiment, the planar shape of the container body 10H is rectangular and the first side wall 11 is longer than the second side wall 21, but vice versa, and the planar shape of the container body 10H may be square.

The hinge connecting portion between the side walls 11 and 21 and the embankments 31 and 32 has, for example, the following structure. That is, as shown in FIG. 1, the bank portions 31 and 32 are formed with a plurality of recesses 60 having openings on the upper surface and the inner surface. Further, as shown in FIG. 7, a part of the opening of the recess 60 on the upper surface forms a wide portion, and the opening is narrower than the inside of the recess 60 except for the wide portion.

On the other hand, as shown in FIG. 1, a plurality of hinge arms 61 corresponding to the plurality of recesses 60 are hung from the lower surfaces of the side walls 11 and 21. Further, as shown in FIG. 7, each hinge arm 61 is provided with hinge protrusions 61A and 61A protruding from the lower end portion to both sides. Then, the hinge protrusions 61A and 61A are received in the recess 60 from the wide portion of the opening of the recess 60 and are engaged with the opening edge from the inside. As a result, the side walls 11 and 21 are between the standing posture of standing on the banks 31 and 32 as shown in FIG. 1 and the folding posture of the side walls 11 and 21 stacked on the bottom wall 30 as shown in FIG. At the same time, the rotation to the outside from the standing posture is restricted.

As shown in FIG. 7, the bank portion 31 on the long side has a stepped structure having a stepped surface 31D on the inner side surface, and correspondingly, the lower surface of the first side wall 11 has the entire inner edge portion. It has a stepped structure with a protruding wall 11U protruding from the wall. Then, as shown in FIG. 6, when the first side wall 11 is in the upright posture, the upper surface and the lower surface of the stepped structure of the first side wall 11 become the upper surface and the lower surface of the stepped structure of the bank portion 31. Contact with.

As shown in FIG. 1, a pair of second side walls 21 and 21 fits between a pair of first side walls 11 and 11. As a result, the first side walls 11 and 11 are restricted from falling inward at the second side walls 21 and 21. Further, the bank portion 31 on the long side is higher than the bank portion 32 on the short side by the thickness of the second side wall 21. As a result, as shown in FIG. 4, the pair of second side walls 21 and 21 are folded first, and the pair of first side walls 11 and 21 are overlapped on the second side walls 21 and 21 as shown in FIG. 11 can be folded.

As shown in FIGS. 4 and 6, side protrusions 13 and 13 project from both sides of the inner surface of the first side wall 11 toward the second side wall 21, and overlap with the outer surface of the second side wall 21 to overlap the second side wall. It regulates the outward deformation and tilting of 21.

Specifically, as shown in FIG. 8, on both sides of the first side wall 11, the entire first side wall 11 is bent at a right angle to the second side wall 21 side and slightly protrudes toward the second side wall 21 side. A ridge 19 is formed. Further, both ends of the embankment portion 31 are bent at a right angle to the embankment portion 32 side and project to the embankment portion 32 side so as to support the side protrusion 19 from below. A locking projection 19T is formed on the lower surface of the side ridge 19 so as to engage with the upper surface recess 31T formed on the upper surface of the bank portion 31 so that the first side wall 11 is locked in an upright posture. It has become.

The side protrusion wall 13 is formed from the upper end of the side protrusion 19 to a position closer to the center in the vertical direction, and further protrudes from the side protrusion 19 toward the second side wall 21. The side protrusion wall 13 is slightly thinner than the side protrusion 19, is arranged near the outer surface of the side protrusion 19, and has an outer surface flush with the side protrusion 19. Further, on the outer surface of the second side wall 21, reinforcing ribs 21L are formed so as to avoid the upper portions of both side edges of the second side wall 21, and the upper portions of these both side edges are vertically elongated plate portions having no reinforcing ribs 21L. It is 21E and 21E.

Square engaging holes 13A and 13A are formed at the upper end and the lower end of the side protrusion wall 13. Then, the engaging protrusions 22 and 22 having a quadrangular cross section protruding from the outer surface of the vertically elongated plate portion 21E of the second side wall 21 are fitted into the engaging holes 13A and 13A to deform the first side walls 11 and 11 to the outside. It is regulated.

Here, as shown in FIG. 4, when the second side walls 21 and 21 are raised from the state where the pair of first side walls 11 and 11 are in the upright posture, the first side walls 11 and 11 are on the bank portion 31. If it is slightly tilted outward, a situation may occur in which the engaging protrusion 22 is not fitted into the engaging hole 13A. In order to avoid this, a guide surface 22A is formed at the tip of the engaging protrusion 22 by chamfering a corner portion on the side away from the first side wall 11 as shown in FIG. As a result, even if the first side wall 11 is slightly inclined outward from the standing posture, the engaging protrusion 22 is guided to the engaging hole 13A by the guide surface 22A, and the inclination of the first side wall 11 is corrected.

Further, the guide surface 22A alone may not be able to cope with the inclination of the first side wall 11 outward from the standing posture. In order to deal with this, the coupling protrusion 14 and the coupling hole 23 are provided on the side closer to the rotation center (that is, the lower side) of the first side wall 11 and the second side wall 21 than the engagement hole 13A and the engagement protrusion 22. ing.

The joint protrusion 14 is formed by bending the tip of a prism body protruding downward from a position below the side protrusion 19 of the side protrusion 19 of the first side wall 11 toward the second side wall 21 at a right angle, and the whole is formed. It has an L-shape. On the other hand, the coupling hole 23 penetrates the side edge portion of the second side wall 21 and has an L-shape corresponding to the coupling protrusion 14 when viewed from the penetrating direction. Further, the reinforcing rib 21L protrudes from the opening edge of the coupling hole 23. Further, the reinforcing rib 21L along the vertical side below the opening on the side surface of the second side wall 21 of the coupling hole 23 has a guide surface 23G inclined toward the side away from the first side wall 11 from the tip toward the base end. Is formed. As a result, as shown in FIG. 4, when the second side walls 21 and 21 are raised from the state where the pair of first side walls 11 and 11 are in the upright posture, the first side wall 11 is inclined outward. Also, the hanging portion 14A at the tip of the coupling protrusion 14 is in sliding contact with the guide surface 23G of the coupling hole 23, and the inclination of the first side wall 11 is corrected.

As shown in FIG. 6, on the side portion of the first side wall 11, an elastic piece 15 is formed by separating a part of the first side wall 11 into a cantilever shape by a slit 12S. The elastic piece 15 extends in the vertical direction and has a free end on the upper end side. Further, a locking protrusion 16 projects from the upper end portion of the elastic piece 15 toward the inside of the container body 10H. The locking protrusion 16 is tapered toward the front side and has inclined surfaces 16A and 16A on both sides. Then, when the second side walls 21 and 21 are raised from the state where the pair of first side walls 11 and 11 are in the upright posture, the second side wall 21 is in sliding contact with the inclined surface 16A of the locking protrusion 16 and is elastic. The piece 15 is bent outward, the elastic piece 15 elastically returns when the second side wall 21 overlaps the side protrusion wall 13, and the locking protrusion 16 engages with the inner surface of the second side wall 21 as shown in FIG. It fits. The surface of the locking protrusion 16 facing the side protrusion 13 may be a surface parallel to the side protrusion 13 instead of the inclined surface 16A.

Due to the sliding contact between the inclined surface 16A of the locking protrusion 16 and the second side wall 21, the first side wall 11 may be pushed outward from the standing posture and tilted. However, such an inclination is corrected by the sliding contact between the above-mentioned coupling protrusion 14 and the guide surface 23G of the coupling hole 23. Further, as shown in FIG. 6, a plurality of protrusion receiving portions 32B and 32C are formed on the bank portion 32, and when the first side wall 11 is in the folded posture, the protrusion receiving portions are received as shown in FIG. The side protrusions 13 and the joint protrusions 14 are received by the portions 32B and 32C, and the side protrusions 19 overlap the upper surface of the bank portion 32.

As shown in FIG. 2, the handle holes 11A and 11A are formed through the first side wall 11 at two locations in the lateral direction, and the handle holes 21A are formed in the center of the second side wall 21 in the lateral direction. ing. Further, a handle portion 31A is formed on the bank portion 31 at a position directly below the handle holes 11A and 11A of the first side wall 11. The bank portion 31 has a hood structure in which the lower surface side is open, and the handle portion 31A is formed by cutting out a part of the outer constituent wall 31F of the bank portion 31.

On the bottom wall 30, a lower surface protrusion 39 formed by stretching ribs in a grid pattern is formed on substantially the entire inner portion of the embankment portion 31 and the embankment portion 32, and protrudes downward from the lower surface of the embankment portions 31 and 32. ing. Further, a first lower surface groove 35A extending in the first horizontal direction H1 and a second lower surface groove 35B extending in the second horizontal direction H2 are formed so as to divide the lower surface protrusion 39 into four equal parts. Then, when small containers (not shown) having a size obtained by dividing the container 10 of the present embodiment into four equal parts are arranged in two rows and two columns and the container 10 of the present embodiment is placed on them, the top opening of each small container is opened. A 1/4 divided body of the lower surface protrusion 39 is fitted.

As shown in FIG. 1, the back side of the first lower surface groove 35A is a central bank portion 33 protruding from the upper surface of the bottom wall 30. The central bank portion 33 has a structure in which the flat plate portion 33S above the lower surface protrusion 39 of the bottom wall 30 is raised, has a horizontal plane 33A at the top portion, and has gently inclined surfaces 33B and 33B on both sides thereof. .. Further, as shown in FIG. 2, in the first lower surface groove 35A, the flat plate portion 33S is recessed upward, and a plurality of ribs 35C are formed inside the flat plate portion 33S, and the lower surface of the ribs 35C is the lower surface of the entire flat plate portion 33S. It is flush with each other.

As shown in FIG. 1, in order to increase the strength of the container body 10H in the assembled state, the first flaps 40, 40 are hinged to the upper edges of the first side walls 11 and 11, and the second side walls 21 and 21 are connected. Second flaps 50, 50 are hinged to the upper edge. Hereinafter, when the first lap 40 and the second flap 50 are not distinguished, they are simply referred to as "flaps 40, 50".

As shown in FIG. 3, the flaps 40 and 50 of the present embodiment have a strip-like shape extending along the upper edges of the side walls 11 and 21, and reinforcing ribs 40L and 50L are stretched on their inner surfaces 40N and 50N. The outer surfaces 40G and 50G are flat. Further, the width of the second flap 50 is narrower than that of the first flap 40.

As shown in FIGS. 10 and 11, the base end surfaces 40M and 50M, which are one surface of the flaps 40 and 50 in the lateral direction, are steps in which the protrusions 40T and 50T protrude from the entire edges on the inner surfaces 40N and 50N. It has a attached structure. Further, as shown in FIG. 11B, in the second flap 50, the reinforcing rib 50L is gradually lowered from the proximal end surface 50M to the distal end surface 50S on the opposite side thereof. That is, the inner surface 50N of the second flap 50 is inclined so as to approach the outer surface 50G from the base end surface 50M toward the tip end surface 50S. On the other hand, as shown in FIG. 10B, the reinforcing rib 40L of the first flap 40 has the same height from the base end surface 40M to the tip end surface 40S on the opposite side thereof.

A plurality of hinge arms 63 project from a plurality of positions in the longitudinal direction of the base end surfaces 40M and 50M of the flaps 40 and 50. The hinge arms 63 have hinge protrusions 64, 64 (see FIGS. 10 and 11) that protrude more than the protrusions 40T and 50T and project from the tip to both sides. Further, the hinge arm 63 is arranged closer to the inner surfaces 40N and 50N of the base end surfaces 40M and 50M, is integrated with the protrusions 40T and 50T, and protrudes from the outer surfaces of the protrusions 40T and 50T.

As shown in FIG. 1 , a plurality of recesses 62 opened on the upper surface and the inner surface are formed on the upper edges of the side walls 11 and 21 corresponding to the plurality of hinge arms 63 of the flaps 40 and 50. As for the openings of the recesses 62, a part of the openings on the inner surface side of the side walls 11 and 21 has a wide portion, and the other openings are narrower than the inside of the recesses 62. Then, the hinge protrusions 64 and 64 are received from the wide portion of the opening in the recess 62 and are engaged with the opening edge from the inside. As a result, the flaps 40 and 50 are rotatably connected to the side walls 11 and 21 (that is, hinged), and the standing posture standing on the side walls 11 and 21 in the standing posture and the side walls 11 and 21 in the standing posture are used. It rotates between the horizontal posture that overhangs horizontally on the inside, and the rotation to the outside from the standing posture is restricted.

Further, the upper surfaces of the side walls 11 and 21 have a stepped structure in which the upper surface protrusions 11T and 21T protrude from the entire outer edge portion. Further, as shown in FIG. 9, the lower steps 11M and 21M of the stepped structure and the upper cross sections 11N and 21N are flush with each other between the side walls 11 and 21. Then, when the flaps 40 and 50 are in the horizontal posture, the outer surfaces 40G and 50G of the flaps 40 and 50 are arranged flush with the lower surface 11M of the side walls 11 and 21 as shown in FIG. When the flaps 40 and 50 are in the upright posture, the base end surfaces 40M and 50M of the flaps 40 and 50 come into contact with the upper surface 11N and 12N of the side walls 11 and 21, and the outer surfaces 40G and 50G of the flaps 40 and 50 are on the side wall. It is flush with the outer surface of 11 and 21 (see FIG. 9).

In addition, regardless of the posture of the side walls 11 and 21, when the rotation positions of the flaps 40 and 50 with respect to the side walls 11 and 21 are specified, the flaps 40, with respect to the inner surface of the side walls 11 and 21 as in the above horizontal posture. The position where the 50s are substantially orthogonal to each other is referred to as the first rotation position, and the position where the flaps 40 and 50 are arranged in the same plane with respect to the side walls 11 and 21 as in the above-mentioned standing posture is referred to as the second rotation position.

As shown in FIG. 13, the side surfaces 49 and 49, which are the end faces in the longitudinal direction of the first flap 40, are adjacent to the inner surfaces of the second side walls 21 and 21 when the first flap 40 is in the horizontal posture. Further, the side wall engaging protrusions 43, 43 project from the side surfaces 49, 49 of the first flap 40, and the side wall engaging recesses 24, 24 receiving the side wall engaging protrusions 43, 43 are provided on the second side wall 21 respectively. It is formed. In the present embodiment, the side wall engaging protrusion 43 and the side wall engaging recess 24 correspond to the "side wall engaging portion" in the claims.

As shown in FIG. 10B, the side wall engaging protrusion 43 has a housing structure, and is arranged at a position closer to the tip surface 40S on the side surface 49 of the first flap 40 and away from the tip surface 40S. It has an outer surface 40G and an inner surface 40N of the flap 40 and an outer surface 43G and an inner surface 43N flush with each other. Further, the side wall engaging protrusion 43 has an inner surface opening 43B that opens to substantially the entire inner surface 43N, and a slit 43A that opens to a surface on the side away from the rotation center of the first flap 40. The slit 43A is formed from the inner surface 43N to the position closer to the outer surface 43G. Further, a pair of internal ribs 44, 44 project from the inner side surfaces of the side wall engaging protrusion 43 facing each other in the longitudinal direction of the first flap 40. A gap facing the slit 43A is provided between the internal ribs 44 and 44. Further, the internal ribs 44 and 44 are provided with guide surfaces 44G and 44G inclined so as to be separated from each other toward the inner surface opening 43B side.

On the other hand, as shown in FIG. 12, the side wall engaging recess 24 of the second side wall 21 has a square groove shape that is open to the inner and outer surfaces and the upper surface of the second side wall 21. Further, a groove in-groove rib 25 is formed in the side wall engaging recess 24. The groove inner rib 25 has a quadrangular shape as a whole, is connected to the inner side surface and the bottom surface of the side wall engaging recess 24 on the side away from the first side wall 11, and projects upward from the end portion on the first side wall 11 side. It has a protrusion 25A. Then, as shown in FIG. 13, when the first flap 40 is in the horizontal posture, the side wall engaging protrusion 43 is received by the side wall engaging recess 24, and the groove in-groove rib 25 is formed in the side wall engaging protrusion 43. It is accepted and fits between the internal ribs 44, 44. As a result, the first flap 40 and the second side wall 21 are restricted from moving to each other in both the first horizontal direction H1 and the second horizontal direction H2, and the first side wall 11 is deformed inward and outward and the second side wall 21 is formed. The deformation of the inside and outside is prevented. In addition, tilting and deformation of the first flap 40 from the horizontal posture downward can be prevented.

Both ends of the second flap 50 in the longitudinal direction are provided with horizontally adjacent portions 58 that are horizontally adjacent to the tip surface 40S of the first flap 40. Further, a part of the tip surface 40S of the first flap 40 is a horizontally adjacent portion 48 adjacent to the horizontally adjacent portion 58 of the second flap 50. Then, the flap engaging protrusions 51 and 51 project from the horizontally adjacent portions 58 of the second flap 50, and the flap engaging holes 41 and 41 for receiving the flap engaging protrusions 51 and 51 are formed in the first flap 40. ing. In the present embodiment, the flap engaging hole 41 and the flap engaging protrusion 51 correspond to the "flap engaging portion" in the claims.

The flap engaging protrusion 51 extends from the center of the horizontally adjacent portion 58 in the lateral direction to the tip surface 50S side in the longitudinal direction of the second flap 50, and extends from the tip portion to the rotation center side. It is provided with a protrusion 52 protruding from the surface, and has a substantially L shape as a whole.

On the other hand, as shown in FIG. 10, the flap engaging hole 41 penetrates the first flap 40 in the thickness direction, and the shape seen from the penetrating direction is substantially L-shaped corresponding to the flap engaging protrusion 51. It has a shape, and one end thereof is an end face opening 41A opened to a horizontally adjacent portion 48. Further, the opening edges of the flap engaging holes 41 on the inner surface 40N and the outer surface 40G of the first flap 40 are chamfered to include an inclined surface 41T. Then, as shown in FIG. 13, when the first flap 40 and the second flap 50 are both in the horizontal posture, the flap engaging protrusion 51 and the flap engaging hole 41 are fitted in the vertical direction.

Further, in the present embodiment, regardless of whether one of the first flap 40 and the second flap 50 is arranged in the horizontal posture or the standing posture (first rotation position or second rotation position), the other is placed. It can be rotated to any position. Specifically, the side wall engaging protrusion 43 of the first flap 40 described above is among the side surfaces 49 of the first flap 40 for the purpose of supporting the first flap 40 from below by the second side wall 21. It is preferable to arrange it on the tip surface 40S side, but as described above, as shown in FIG. 12, the side wall engaging protrusion 43 is arranged at a position on the side surface 49 away from the tip surface 40S. As a result, even if the second flap 50 is in the upright posture, the first flap 40 can be moved to an arbitrary rotation position without interfering with the second flap 50. Further, of the protrusions 52 of the second flap 50, the side surface of the second flap 50 facing the first flap 40 side in the upright posture is an inclined surface 52S inclined in the vertical direction according to the arc locus of the side wall engaging protrusion 43. It has become. As a result, the side wall engaging protrusion 43 can be brought closer to the tip surface 40S side. Further, when the first flap 40 and the second flap 50 are in the horizontal posture, as shown in FIG. 14, between the horizontally adjacent portions 48 and 58 of the flaps 40 and 50 and the flap engaging hole 41. A clearance is formed between the inner inner surface 41F and the end surface of the flap engaging protrusion 51. As a result, when the second flap 50 is in the horizontal posture, the first flap 40 can be moved to an arbitrary rotation position without interfering with the second flap 50. Further, since the inclined surface 41T is provided on the opening edge of the flap engaging hole 41, the second flap 50 can rotate arbitrarily without interfering with the first flap 40 when the first flap 40 is in the horizontal posture. You can move to a position. When the first flap 40 is in the upright posture, the second flap 50 is greatly separated from each other, so that the second flap 50 can be moved to an arbitrary rotation position without interfering with the first flap 40.

This concludes the description of the configuration of the container 10 of the present embodiment. Next, the action and effect of the container 10 will be described.

The container 10 can be folded. For that purpose, as shown in FIG. 3, the flaps 40 and 50 are in an upright posture, and the second side wall 21 is strongly pushed inward, or the locking protrusions 16 and 16 are pushed outward from the inside of the container body 10H. The second side wall 21 may be pushed inward. Then, as shown in FIG. 4, the second side wall 21 is overlapped with the second flap 50 on the bottom wall 30.

In the container 10 of the present embodiment, the second flap 50 is stacked at a position of the bottom wall 30 away from the central bank portion 33, but the container 10 is shortened in the second horizontal direction H2 and the second flap 50 is used. The inclined inner surface 50N (see FIG. 11) may overlap with the inclined surface 33B of the central bank portion 33.

As shown in FIG. 4, when a pair of second side walls 21 and 21 are overlapped on the bottom wall 30, the first side walls 11 and 11 are pushed inward. Then, as shown in FIG. 5, the first side walls 11 and 11 are superposed on the second side walls 21 and 21, and the entire container body 10H is in a folded state. At this time, a slight gap is formed between the first side wall 11 and the central bank portion 33. Further, in the folded state of the container 10, the pair of bank portions 31, 31 protrudes upward from the first side walls 11 and 11, and another container 10 is placed between the bank portions 31, 31. The bottom protrusion 39 (see FIG. 2) can be fitted to stack the containers 10 and 10 together.

In order to put the folded container 10 into the assembled state, the operation opposite to the above operation may be performed. At that time, since a gap is formed between the first flap 40 of the first side wall 11 in the folded posture and the bottom wall 30, it is easy to put a finger on the tip of the first flap 40 and easily put a finger on the first side wall. 11 can be in an upright position. Further, as shown in FIG. 8, since the first side wall 11 is held in the upright posture by the engagement between the locking projection 19T and the upper surface recess 31T, the first side wall 11 is raised when the second side walls 21 and 21 are raised. , 11 does not fall inward, and the second side wall 21 can be easily raised.

Further, since the inner surface 50N of the second flap 50 is inclined and a gap is formed between the inner surface 50N and the bottom wall 30, the second side wall 21 can be easily raised by putting a fingertip on the tip of the second flap 50 . .. Further, by pushing down the tip of the second flap 50 , the second side wall 21 and the second flap 50 are bent so that the second side wall 21 is lifted from the bottom wall 30, and the second flap 50 is changed to the horizontal posture. It is also possible to raise the two side walls 21. Then, as shown in FIG. 9, the second side wall 21 is sandwiched between the side protrusion wall 13 and the locking protrusion 16 and held in an upright posture, and the container body 10H is in the assembled state.

When the container body 10H is in the assembled state, the flaps 40 and 50 can be tilted inward to take a horizontal posture. Here, since one of the first and second flaps 40 and 50 can be rotated to an arbitrary position regardless of the position of the other, the order of operating the first and second flaps 40 and 50 is changed. The flaps 40 and 50 can be easily set to the horizontal posture without worrying about it. By setting the flaps 40 and 50 in the horizontal posture, they serve as reinforcing ribs for the side walls 11 and 21, preventing bending deformation of the side walls 11 and 21 and increasing the strength of the entire container 10. Further, when the flaps 40 and 50 are in the horizontal posture, as shown in FIGS. 13 and 14, the flap engaging protrusion 51 of the second flap 50 and the flap engaging hole 41 of the first flap 40 are fitted from above and below. In addition, the flaps 40 and 50 are restricted from moving to each other in both the first and second horizontal directions H1 and H2. Further, as shown in FIG. 1, all the flaps 40 and 50 form a frame body 45 fitted inside the upper part of the container body 10H. As a result, the entire upper part of the container body 10H is reinforced. In addition, luggage can be easily put in and taken out of the container body 10H through the flap inner opening 46 formed inside the frame body 45.

When another container 10 is stacked on the container 10 in which the flaps 40 and 50 are in the horizontal posture, the lower surface protrusion 39 of the upper container 10 is above the flaps 40 and 50 of the lower container 10. It is fitted inside the upper part of the side walls 11 and 21 (specifically, the upper surface protrusions 11T and 21T) protruding from the side, and lateral displacement is regulated. Further, as a stacking method, the upper container 10 can be tilted and slid on the flaps 40 and 50 of the lower container 10. At that time, since the outer surfaces 40G and 50G of the flaps 40 and 50 are flush with each other, they can be slid smoothly.

As described above, since the container 10 of the present embodiment is provided with flaps 40 and 50 on the four side walls 11 and 21, the strength is higher than before. Nevertheless, since one of the adjacent flaps 40 and 50 can be rotated to an arbitrary position regardless of the position of the other, the operability is also excellent.

[Second Embodiment]
This embodiment is shown in FIGS. 15 and 16, and is different from the first embodiment only in that the flap engaging hole 41V of the first flap 40V is provided with the bottom portion 41S. Then, as shown in FIG. 16, the flap engaging protrusion 51 of the second flap 50 is fitted into the flap engaging hole 41V and superposed on the bottom portion 41S.

According to this configuration, when the first flap 40V is rotated upward from the horizontal posture, the second flap 50 having the flap engaging protrusion 51 is pushed upward by the bottom portion 41S of the flap engaging hole 41V. That is, it is excellent in operability in that both adjacent flaps 40V and 50 can be rotated upward at once.

[Third Embodiment]
In this embodiment, as shown in FIG. 17, a flap engaging hole 41W notched in a quadrangle is formed in the first flap 40W, and a flap engaging hole 41W is formed at a longitudinal end of the second flap 50W. It is a flap engaging protrusion 51W that engages with. According to the present embodiment, the first flap 40W and the second flap 50W are restricted from moving in the second horizontal direction H2 by engaging with the flap engaging hole 41W and the flap engaging protrusion 51W.

Although not shown, for example, the end face of the second flap 50W in the longitudinal direction is cut out in a quadrangular shape to form a flap engaging hole, and the quadrangular flap engaging thereof is projected from the tip surface 40S of the first flap 40W. The protrusions may be engaged to restrict the movement of the first flap 40W and the second flap 50W in the first horizontal direction H1.

[Fourth Embodiment]
In this embodiment, the first flap 40X and the second flap 50X are not engaged with each other, and the horizontally adjacent portion 58 of the longitudinal end portion of the second flap 50X is shown in FIG. , The structure is such that it is only adjacent to the horizontally adjacent portion 48 which is a part of the tip surface 40S of the first flap 40X. Even with such a configuration, the bending deformation of both the first side wall 11 and the second side wall 21 can be regulated, so that the strength of the container 10 is improved as compared with the conventional case.

[Fifth Embodiment]
The present embodiment is shown in FIG. 19, in which the longitudinal ends of the first flap 40Y and the second flap 50Y are horizontal adjacent portions 48Y, 58Y inclined with respect to the longitudinal direction, and are adjacent to each other. is doing.

[Sixth Embodiment]
This embodiment is shown in FIG. 20, in which the flap body 50H of the second flap 50Z has a rod shape, and the hinge arm 63 extends from the flap body 50H. Even if the flap body 50H of the second flap 50Z has a rod shape as in the present embodiment, it is possible to prevent bending deformation of the second side wall 21 when the second side wall 21 is in a horizontal posture, and the strength can be increased. The first flap may be rod-shaped, or both the first and second flaps may be rod-shaped.

[Other embodiments]
(1) In the first embodiment, the flaps 40 and 50 are rotatable between the first rotation position and the second rotation position 90 degrees outward from the first rotation position. The moving position may be separated from the first rotation position by approximately 90 degrees or more, and may be configured such that the second rotation position is separated from the first rotation position by 180 degrees to the outside, or. It may be configured to be 270 degrees outward from the first rotation position.

(2) The container 10 of the first embodiment is provided with flaps 40, 50 on the four side walls 11 and 21 of the foldable container body 10H, but flaps are provided on the four side walls of the non-foldable container body. May be provided.

(3) In the container 10 of the second embodiment, for example, a protrusion is provided on the horizontally adjacent portion 58 of the second flap 50 so as to be locked to the recess 29 on the inner surface of the second side wall 21 shown in FIG. You may do it. By doing so, the second flap 50 is held in the horizontal posture, and the first flap 40V is held in the horizontal posture by the second flap 50.

10 Container 10H Container body 11 1st side wall 21 2nd side wall 24 Side wall engaging recess (side wall engaging part)
30 Bottom wall 40, 40V-40Y 1st flap 41, 41V, 41W Flap engagement hole (flap engagement part)
41S Bottom 43 Side wall engaging protrusion (side wall engaging part)
45 Frame body 46 Flap inner opening 48, 48Y, 58, 58Y Horizontal adjacent part 50, 50W to 50Z Second flap 51, 51W Flap engaging protrusion (flap engaging part)
H1 1st horizontal direction H2 2nd horizontal direction

Claims (5)

A rectangular parallelepiped container body having a pair of first side walls facing each other in the first horizontal direction, a pair of second side walls facing each other in the second horizontal direction, and a bottom wall, and having an open upper surface.
A first rotation position that extends along the upper edge of the pair of first side walls and is hinged to each of the pair of upper edges of the first side wall and projects substantially horizontally from the first side wall. And a pair of first flaps that rotate between the second rotation position, which is approximately 90 degrees or more away from it, and
A first rotation position that extends along the upper edge of the pair of second side walls and is hinged to each of the pair of upper edges of the second side wall and projects substantially horizontally from the second side wall. And a pair of second flaps that rotate between the second rotation position, which is approximately 90 degrees or more away from it, and
An opening in the flap surrounded by the pair of first flaps and the pair of second flaps at the first rotation position.
Provided on the first flap and the second flap, both of them are fitted to each other in the vertical direction in a state of being arranged at the first rotation position, in at least one direction of the first horizontal direction and the second horizontal direction. A container with flap engagements, which regulate movement with each other . The first flap and the second flap are provided with horizontally adjacent portions that are adjacent to each other in the horizontal direction while being arranged at the first rotation position.
The flap engaging portion of one of the first flap and the second flap protrudes from the horizontally adjacent portion.
A claim that the flap engaging portion of the first flap and the other of the second flap has an opening in the horizontally adjacent portion and penetrates the other of the first flap and the second flap in the thickness direction. Item 1. The container according to item 1. The first flap and the second flap are provided with horizontally adjacent portions that are adjacent to each other in the horizontal direction while being arranged at the first rotation position.
The flap engaging portion of one of the first flap and the second flap protrudes from the horizontally adjacent portion.
The flap engaging portion of the first flap and the other of the second flap has an opening in the horizontally adjacent portion and is formed by being recessed in the outer surface or the inner surface of the other of the first flap and the second flap. The container according to claim 1 . The first flap and the second side wall are provided with a side wall engaging portion that engages with each other and restricts horizontal movement with each other.
The container according to claim 1 , wherein the second flap fits between the pair of first flaps at the first rotation position . The upper surfaces of the first side wall and the second side wall are arranged substantially flush with each other.
A claim that the first flap and the upper surface of the second flap arranged at the first rotation position are substantially flush with each other and are arranged below the upper surface of the first side wall and the second side wall. The container according to any one of 1 to 4.

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