JP6057324B2 - Container set - Google Patents

Description

The present invention relates to a container and the container set comprising the same and smaller than a plurality of sub-containers.

  Conventionally, as this type of container set, a container having a plurality of rectangular lower surface protrusions on the lower surface of the container and a protrusion receiving recess capable of receiving the lower surface protrusions on the upper surface of each sub-container is known. . In this container set, when a plurality of sub-containers are arranged side by side and stacked on top of each other, the lower surface protrusions of the containers are fitted into the protrusion receiving recesses of the sub-containers (for example, Patent Document 1). reference).

Japanese Patent No. 3707968 (FIGS. 4 and 6)

  By the way, during the operation of arranging a plurality of sub-containers side by side, the sub-containers may collide and be separated from the regular arrangement. In such a case, in the conventional container set described above, when the container is stacked on the sub-container, the lower surface protrusion of the container contacts the edge of the protrusion receiving recess of any of the sub-containers. It was impossible to combine, and it took time and effort to stack.

The present invention has been made in view of the above circumstances, and an object and a plurality of sub-containers, to provide a container set of a possible container stacked smoothly over multiple sub-containers became side by side.

In order to achieve the above object, the container set according to the first aspect of the present invention has a rectangular parallelepiped shape as a whole, and a plurality of quadrangular lower surface protrusions are arranged at intervals inside the outer edge portion of the lower surface. A projecting portion provided on the upper surface of each sub-container, which is composed of a container and a plurality of sub-containers having a rectangular parallelepiped shape smaller than the container. In the container set in which the lower surface protrusion is fitted inside the receiving recess, the lower surface protrusion rises obliquely from the lower surface of the container to all opposing side surfaces where the lower surface protrusions face each other, and guides the lower surface protrusion into the protrusion receiving recess. A vertical positioning is formed in which an inclined sliding contact portion is formed and can be brought into surface contact with the inner surface of the protrusion receiving recess perpendicular to the lower surface of the container on all non-opposing side surfaces of the respective lower surface protrusions other than the opposite side surface. There is formed, the inclined sliding contact portion, while being arranged at both ends or both ends close position in the lateral direction of the opposite side, an intermediate portion sandwiched between the inclined sliding contact portions of the opposing sides from the lower surface of the container It forms an opposing vertical surface that rises vertically, and the base end of the inclined sliding contact portion protrudes from the opposing vertical surface to the outside of the lower surface protrusion, while the distal end portion of the inclined sliding contact portion is inside the lower protrusion from the opposing vertical surface. Of the projection receiving recess of the sub-container, the portion facing the inclined sliding contact portion from the portion facing the opposing vertical surface is projected inside the projection receiving recess to form the sliding contact projection. It has the characteristics.

According to a second aspect of the present invention, in the container set according to the first aspect, a communication protrusion extending so as to communicate between the opposing vertical surfaces protrudes from the lower surface of the container, and a communication protrusion is formed in the sub-container. It has a feature in that a receiving ridge receiving groove is formed, and the connecting ridge can be brought into contact with the bottom surface of the ridge receiving groove.

According to a third aspect of the present invention, in the container set according to the second aspect , the positional deviation between the container and the sub-container in the width direction of the connecting protrusion is regulated by the uneven engagement between the connecting protrusion and the protrusion receiving groove. It has the characteristics in the place where it was made to do.

According to a fourth aspect of the present invention, in the container set according to the second or third aspect, a part of the projecting portion receiving recess facing the opposing vertical surface is protruded together with the projecting portion receiving groove to the inside of the projecting portion receiving recess. This is characterized by a groove extension protrusion.

According to a fifth aspect of the present invention, in the container set according to the fourth aspect , the sub-container is provided with a pair of rotating lids for opening and closing the upper surface opening, and projects from the upper surface of one outer edge portion of each rotating lid. The movable hinge protrusion is pivotably connected in a state of being arranged between the plurality of fixed hinge protrusions protruding from the upper surface of the outer edge of the sub-container. The inner surface in the closed state forms a portion facing the opposite vertical surface, and the groove extension protrusion is provided on the inner surface of the movable hinge protrusion, and the rotating lid is rotated to the position facing the outer surface of the sub-container. It is characterized in that it can be brought into contact with the upper surface of the sub-container.

[Invention of Claim 1]
An inclined sliding contact portion for guiding the lower surface protrusions into the protrusion receiving recesses of the sub-containers is formed on the opposite side surfaces of the container lower surface protrusions in the container set of claim 1. As a result, even if the sub-containers arranged side by side are displaced to the side away from the normal arrangement, when the containers are stacked on the sub-containers, the inclined sliding contact portions of the containers become the protrusion receiving recesses of the sub-containers. The sub-containers are drawn in contact with each other so as to be in a regular arrangement by sliding in contact with the edge, and each lower surface protrusion is smoothly received in each protrusion receiving recess. That is, according to the present invention, containers can be smoothly stacked on a plurality of side-by-side sub-containers. In addition, the non-opposing side surface of each bottom surface protrusion of the container is formed with a vertical positioning portion that is perpendicular to the bottom surface of the container and can be brought into surface contact with the inner surface of the protrusion receiving recess. Even if an impact is applied to the sub-container from the side in a state of being stacked on the sub-container, the sub-container does not easily shift laterally with respect to the container.

Further, in the present invention , the base end portion of the inclined sliding contact portion protrudes outside the lower surface protruding portion from the opposing vertical surface of the lower surface protruding portion, while the distal end portion of the inclined sliding contact portion is located inside the lower protruding portion from the opposing vertical surface. Therefore, the sliding contact distance at the inclined sliding contact portion can be increased without overhanging the inclined sliding contact portion to the outside of the opposed vertical surface or excessively retracting the inclined sliding contact portion.

[Inventions of Claims 2 and 4 ]
In the structure of Claim 2 , since the connection protrusion extended so that it might connect between lower surface protrusions was protruded and formed in the lower surface of the container, the bending strength of the lower surface of a container increases. In addition, a protrusion receiving groove is formed in the sub container to receive the connecting protrusion, and the connecting protrusion can be brought into contact with the bottom surface of the protrusion receiving groove, so that the container connecting protrusion is supported from below by the sub container. Thus, the lower surface of the container is strengthened. Furthermore, in the configuration of claim 4 , since a part of a portion of the protrusion receiving recess facing the opposing vertical surface is protruded inside the protrusion receiving recess together with the protrusion receiving groove, the groove extending protrusion is formed. The contact area between the bottom surface of the protrusion receiving groove and the connecting protrusion can be increased, and the reinforcement of the lower surface of the container is increased.

[Invention of claim 3 ]
In the configuration of claim 3 , in addition to the fitting between the lower surface protrusion and the protrusion receiving recess, the positional deviation between the container and the sub-container is also regulated by the uneven engagement between the connecting protrusion and the protrusion receiving groove. Therefore, the stacked state of the container and the sub-container is stabilized.

[Invention of claim 5 ]
In the configuration of claim 5 , the groove extension protrusion is provided on the movable hinge protrusion of the rotating lid of the sub-container so that the groove extending protrusion contacts the upper surface of the sub-container when the rotating lid is opened. Thus, the groove extension protrusion can also be used to support the weight of the rotating lid.

The perspective view of the container set which concerns on 1st Embodiment of this invention. Perspective view of main container Bottom perspective view of bottom base of main container The perspective view which expanded a part of lower surface of the bottom base Bottom perspective view of main container Perspective view of sub-container Perspective view of the upper frame of the sub-container Perspective view of the rotating lid of the sub-container Top side perspective view of the sub container with the rotating lid closed Partially broken perspective view of the sub container with the rotating lid open A perspective view of a state in which a pair of sub-containers are arranged side by side Sectional view of the main container stacked on top of a pair of sub-containers Sectional view of the main container stacked on top of a pair of sub-containers The perspective view of the container set of 2nd Embodiment A bottom perspective view of the main container in the container set

[First Embodiment]
Hereinafter, an embodiment of the present invention will be described with reference to FIGS. As shown in FIG. 1, the container set 100 of this embodiment includes one container 10 and two sub-containers 50 and 50. Hereinafter, in order to clearly distinguish the container 10 from the sub-container 50, it is referred to as “main container 10”.

  As shown in FIG. 2, the main container 10 is a so-called folding container that has a rectangular parallelepiped shape as a whole, and includes a rectangular bottom base 11 that forms the bottom and a rectangular upper frame 20 that forms the top. A pair of bent side walls 30, 30 and jumping side walls 33, 33 are assembled together, and a pair of rotating lids 34, 34 are assembled on the upper surface of the upper frame 20.

  Each jumping side wall 33 is rotatably connected to each short side portion of the upper frame 20 at the upper end. Further, the lower end portion of the jumping side wall 33 is in contact with the bottom stopper wall 11 </ b> S standing from the short side portion of the outer edge portion of the bottom base 11 from the inside. Further, from the inner surface of the bottom stopper wall 11S, a locking claw (not shown) protrudes horizontally and is locked to the lower edge portion of the jumping side wall 33. Then, when the lower end portion of the jumping side wall 33 is pressed inward, the latching claw is unlocked and the jumping side wall 33 is rotated so as to be flipped up. It becomes a tatami state.

  Each bent side wall 30 is divided into an upper divided side wall 31 and a lower divided side wall 32 at the center in the vertical direction, and the upper and lower divided side walls 31 and 32 are rotatably connected. Further, the upper end portion of the bent side wall 30 is rotatably connected to the long side portion of the upper frame 20, while the lower end portion is rotatably connected to the long side portion of the outer edge portion of the bottom base 11. Then, when the rising side walls 33, 33 are accommodated between the standing folded side walls 30, 30, and the rising side walls 33, 33 are folded, the folded side walls 30, 30 can be folded inwardly. it can. In addition, when both the jumping upper side walls 33, 33 and the both bent side walls 30, 30 are folded, the lower surface of the upper frame 20 comes into contact with the upper surface of the bottom base 11.

  A plurality of fixed hinge protrusions 23 are arranged in a row on each upper surface of the pair of long side portions of the upper frame 20, whereas a plurality of movable hinge protrusions are provided on one outer edge of the rotating lid 34. The portions 35 are formed side by side. And the fixed hinge protrusion 23 and the movable hinge protrusion 35 are arrange | positioned in the state located in a line by turns, and are connected so that rotation is possible. Further, on the upper surface of the upper frame 20, the inner edge side thereof is depressed in a stepped shape to form an inner edge recessed portion (not shown), and when the rotating lid 34 is closed, the outer edge portion of the rotating lid 34 becomes the upper frame. It fits in 20 inner edge depressions. Further, each rotation lid 34 can be rotated 270 degrees outward from the closed state.

  The rotating lid 34 is formed with rectangular through holes 34A extending along the outer edge portions at both ends in the longitudinal direction. Correspondingly, the upper surface of each short side portion of the upper frame 20 has 1 A pair of positioning protrusions 21 and 21 are formed to protrude. When each rotary lid 34 is closed, each positioning protrusion 21 protrudes upward from the rotary lid 34 through each through hole 34A of each rotary lid 34.

  Further, a portion of the main container 10 surrounded by the fixed hinge protrusion 23 group, the movable hinge protrusion 35 group, and the positioning protrusion 21 group is a protrusion receiving recess 80, and the main container 10. When a plurality of 10 are stacked, a lower surface protrusion 12 (see FIG. 3) described below provided on the lower surface 11K of the upper main container 10 (hereinafter also referred to as “the lower surface 11K of the bottom base 11”) By fitting into the protrusion receiving recess 80 of the container 10, the lateral displacement between the main containers 10, 10 is prevented. Specifically, a center protrusion 21T is formed on the surface of the positioning protrusion 21 facing the inner side in the longitudinal direction of the upper frame 20 by bulging the center portion in the left-right direction. Further, among the fixed hinge protrusions 23 group, the fixed hinge protrusions 23 other than the pair of fixed hinge protrusions 23, 23 at both ends are unevenly distributed on the outer edge side of the upper surface of the long side portion of the upper frame 20, and Only the pair of fixed hinge protrusions 23, 23 has a size over the entire width direction on the upper surface of the long side portion of the upper frame 20. And the positioning front end surface 23K provided at the front ends of the fixed hinge projections 23 at both ends and the center projection 21T of the positioning projection 21 face the lower surface projection 12 from the side, and the lower surface projection 12 It is positioned in the protrusion receiving recess 80.

  Further, the upper surfaces of the fixed hinge protrusion 23 group and the positioning protrusion 21 group are flush with each other at a position slightly above the movable hinge protrusion 35 group to constitute a base surface contact portion 81. When a plurality of main containers 10 are stacked, the base surface contact portion 81 of the lower main container 10 contacts the outer edge portion of the lower surface 11K of the upper main container 10.

  As shown in FIG. 3, a pair of lower surface protrusions 12, 12 are formed to protrude from the lower surface 11 </ b> K of the bottom base 11. Each of the lower surface protrusions 12 is disposed in each half surface area obtained by dividing the lower surface 11K of the bottom base 11 into two equal parts at the center in the longitudinal direction, and rectangular outer frame ribs 12B each having a smaller half surface area are provided. It is provided in the outer part. The long side direction of the outer frame rib 12B is parallel to the short side direction of the lower surface of the main container 10 as a whole. The lower surface protrusion 12 includes a rectangular inner frame rib 12A that is slightly smaller inside the outer frame rib 12B, and further includes a lattice rib 12L on the entire inner frame rib 12A. Further, the outer frame rib 12B and the inner frame rib 12A are connected by a plurality of communication ribs 12C.

  As shown in FIG. 13, the protruding amount of the outer frame rib 12B from the lower surface 11K of the bottom base 11 is slightly smaller than that of the inner frame rib 12A. The lower surface is inclined so as to communicate between the lower surface of the outer frame rib 12B and the lower surface of the inner frame rib 12A. Further, as shown in FIG. 3, the vertical and horizontal rib groups constituting the lattice rib 12 </ b> L extend in directions rotated 45 degrees with respect to the longitudinal direction and the lateral direction of the bottom base 11.

  A plurality of side surface protrusions 12 </ b> D are formed on each of the lower surface protrusions 12 on the outer surface located on the end side in the longitudinal direction of the bottom base 11 and the adjacent outer surfaces. In the present embodiment, three sides of the four sides of the outer frame rib 12B of the lower surface projection 12 where the side projection 12D is formed are “vertical positioning portions” according to the present invention. Further, each side projection 12D has a portion of the outer frame rib 12B built up outside, and the tip of each side projection 12D is orthogonal to the lower surface 11K of the bottom base 11 and the outer frame rib 12B. It is a flat surface parallel to the outer surface. Then, when a plurality of main containers 10 are stacked, the positioning front end surface 23K of the fixed hinge protrusion 23 is formed on the portion of the outer frame rib 12B of the lower surface protrusion 12 of the upper main container 10 that does not have the side protrusion 12D. And the central protrusion 21T of the positioning protrusion 21 face each other so as to be able to come into surface contact.

  A pair of inclined slidable contact portions 13 and 13 are formed on one side surface of the bottom surface protrusion 12 on the central side in the longitudinal direction of the bottom base 11 at both end portions of the one side surface. As shown in FIG. 4, each inclined sliding contact portion 13 is formed by deforming a part of the outer frame rib 12B located on one side surface of the outer frame rib 12B. The inner and outer surfaces of the frame rib main body 12Y sandwiched between the pair of inclined sliding contact portions 13 and 13 of the outer frame rib 12B are both orthogonal to the lower surface 11K of the bottom base 11 as shown in FIG. . And the outer surface of this frame rib main body 12Y is the opposing vertical surface 12X which concerns on this invention.

  On the other hand, as shown in FIG. 12, the inclined sliding contact portion 13 has a guide slope whose inner surface is orthogonal to the lower surface 11K of the bottom base 11 and whose outer surface obliquely intersects the lower surface 11K of the bottom base 11. It is the surface 13A. Further, as shown in FIG. 4, the base-side intersection line 13X formed by the intersection of the guide inclined surface 13A and the lower surface 11K of the bottom base 11 in the inclined sliding contact portion 13 is an opposing vertical surface 12X of the frame rib main body 12Y. Further, it is shifted to the outside of the lower surface protrusion 12. On the other hand, a tip side intersection line 13Y formed by intersecting the tip end surface and the guide inclined surface 13A in the inclined sliding contact portion 13 is shifted to the inside of the lower surface protrusion 12 from the opposed vertical surface 12X of the frame rib main body 12Y.

  In addition, as shown in FIG. 4, in the side part on the frame rib main body 12Y side of the inclined sliding contact portion 13, a stepped portion between the portion retracted from the frame rib main body 12Y to the inside of the lower surface protrusion 12 and the frame rib main body 12Y. A side inclined surface 13B inclined to the frame rib main body 12Y side is formed.

  As shown in FIG. 3, the first to third connecting ridges are formed on the portion of the lower surface 11 </ b> K of the bottom base 11 sandwiched between the lower surface protrusions 12 and 12 (hereinafter referred to as the “lower surface between protrusions 11 </ b> M”). 14, 15, 16 and partitioning ridges 17 are formed to protrude. The first to third connecting protrusions 14, 15, 16 extend in the width direction of the lower surface 11 </ b> M between the protrusions to communicate between the lower surface protrusions 12, 12. Moreover, the 1st connection protrusion 14 is arrange | positioned at the both ends of the longitudinal direction of the lower surface 11M between protrusions, and the 3rd connection protrusion 16 is arrange | positioned in the center of the longitudinal direction of the lower surface 11M between protrusions, and 2nd communication The ridges 15 are arranged at two positions near both sides of the third connecting ridge 16 in the longitudinal direction of the lower surface 11M between the protrusions. Further, the protruding amount of the first to third connecting ridges 14, 15, 16 from the lower surface 11M between the protrusions is less than half of the protruding amount of the outer frame rib 12B of the lower surface protrusion 12 from the lower surface 11M between the protrusions. It is the size of.

  More specifically, as shown in FIG. 5A, each of the first connecting ridges 14 includes a ridge center groove 14M at the center in the width direction on the flat surface of the tip, and on the second connecting ridge 15 side. While having the inclined side surface 14A inclined at an angle of about 45 degrees with respect to the lower surface 11M between the protrusions, the opposite side has the inclined side surface 14B inclined at a steeper angle than the inclined side surface 14A. As shown in FIG. 5B, each of the second connecting ridges 15 also has a ridge center groove 15M at the center in the width direction, and at substantially the same angle as the inclined side surface 14A of the first connecting ridge 14 on both sides. The inclined side surfaces 15B and 15B are inclined. The third connecting ridge 16 is narrower than the first and second connecting ridges 14 and 15 and has a flat front end surface that does not have a ridge central groove, and is provided on both sides. The inclined side surfaces 16B and 16B are inclined at substantially the same angle as the inclined side surface 14A of the first connecting protrusion 14.

  As shown in FIG. 3, the partition protrusion 17 is disposed at the center in the width direction of the lower surface 11 </ b> M between the protrusions, and extends between the first connection protrusions 14 and 14. Further, the protruding amount of the partition protrusion 17 from the lower surface 11M between the protrusions is smaller than the protruding amounts of the first to third connecting protrusions 14, 15, and 16. Furthermore, as shown in FIG. 12, the sectional shape of the partition projection 17 is a triangle, and both left and right sides thereof are inclined side surfaces 17A and 17A that are inclined at a gentle angle with respect to the lower surface 11M between the protrusions.

  This completes the description of the configuration of the main container 10. Next, the configuration of the sub-container 50 will be described with reference to FIGS. As shown in FIG. 6, the entire sub-container 50 has a rectangular parallelepiped shape similar to that of the main container 10, and the planar shape thereof is approximately half the planar shape of the main container 10. The sub-container 50 is also a folding container having the same mechanism as that of the main container 10, and includes a pair of bent side walls 70, 70 and a pair of jumping side walls 73, 73 as a bottom base 51 and an upper frame 60. A pair of rotating lids 74, 74 are provided on the upper surface. Similarly to the main container 10, the sub-container 50 is also rotated so as to flip up the upper side walls 73, and then the folded side walls 70 are folded in two into an upper divided side wall 71 and a lower divided side wall 72. And can be folded. Further, a lower surface protrusion (not shown) having a size substantially the same as the lower surface protrusion 12 of the main container 10 is formed on the lower surface of the sub container 50 so as to protrude.

  Each rotating lid 74 of the sub-container 50 is also rotatably connected to each long side portion of the upper frame 60, like the rotating lid 34 of the main container 10. Therefore, on the upper surface of each long side portion of the upper frame 60, first to third fixed hinge protrusions 62, 63, 64 corresponding to the group of fixed hinge protrusions 23 of the main container 10 are arranged in a line. ing. On the other hand, first and second movable hinge protrusions 75 and 76 are provided on one outer edge of the rotating lid 74, and the first to third fixed hinge protrusions 62, 63, and 64 The first and second movable hinge protrusions 75 and 76 are rotatably connected in a line. Further, on the upper surface of the upper frame 60, the inner edge side of the upper frame 60 is recessed to form a stepped inner portion 60J (see FIG. 7), and when the rotating lid 74 is closed, the outer edge of the rotating lid 74 is The portion fits into the inner edge depression of the inner edge depression 60J, and the rotation lid 74 can be rotated 270 degrees outward from the closed state.

  Specifically, the first fixed hinge protrusions 62 are arranged at positions near both ends of each long side portion of the upper frame 60, and the second fixed hinge protrusions 62 and 62 are arranged at the center between the first fixed hinge protrusions 62 and 62. A fixed hinge protrusion 63 is disposed. Further, the third fixed hinge protrusions 64 are respectively disposed between the second fixed hinge protrusions 63 and the first fixed hinge protrusions 62. The first movable hinge protrusion 75 is arranged between the second and third fixed hinge protrusions 63 and 64, and the second movable hinge protrusion 76 is the first and third fixed hinge protrusions. 62, 64. Further, as shown in FIG. 8, a cantilever shaft 76S protruding from one side of the second movable hinge protrusion 76, a cantilever shaft 75S protruding from one side of the first movable hinge protrusion 75, As shown in FIG. 9, the connecting shaft 75N passed between the first and second movable hinge protrusions 75, 76 rotates to the first to third fixed hinge protrusions 62, 63, 64. Supported as possible.

  As shown in FIG. 7, the second and third fixed hinge protrusions 63, 64 are unevenly distributed at positions near the outer edge on the upper surface of the long side portion of the upper frame 60, whereas the first fixed hinge protrusions 62 is a size over the entire width direction on the upper surface of the long side portion of the upper frame 60, and the upper frame 60 from the second and third fixed hinge protrusions 63 and 64 of the first fixed hinge protrusion 62. The portion projecting inward is a sliding contact projection 62T according to the present invention. Further, the front end face 62 </ b> K facing the inner side in the short direction of the upper frame 60 in the first fixed hinge protrusion 62 is flush with the inner side surface of the long side portion of the upper frame 60.

  Further, on the upper surface of the second fixed hinge protrusion 63, a protrusion receiving groove 63M is formed. The protrusion receiving grooves 63M are formed so as to cross the upper surface of the second fixed hinge protrusion 63 in the short direction of the upper frame 60, and are a pair of flat and inclined grooves on both sides of the horizontal groove bottom surface 63A. The structure has the inclined surfaces 63B and 63B.

  As shown in FIG. 8, a protrusion receiving groove 75 </ b> M is also formed on the upper surface of the first movable hinge protrusion 75. The protrusion receiving groove 75M is also formed so as to cross the upper surface of the first movable hinge protrusion 75 in the lateral direction of the upper frame 60, and a pair of groove inclined surfaces 75B and 75B on both sides of the horizontal groove bottom surface 75A. It has a structure with Each of the groove inclined surfaces 75B is bent so as to have a ridge line in the center in the width direction.

  A groove extending protrusion 75T is formed on the surface of the first movable hinge protrusion 75 facing the inner side in the short direction of the upper frame 60. The protrusion receiving groove 75M extends to the upper surface of the groove extending protrusion 75T. Is formed. The tip end surface 75K of the groove extension protrusion 75T is flat and flush with the surface of the second and third fixed hinge protrusions 63 and 64 facing the inner side in the short direction of the upper frame 60. . Further, both lateral portions of the front end surface 75K in the groove extension protrusion 75T are inclined surfaces that are gently inclined with respect to the front end surface 75K.

  Further, the second movable hinge protrusion 76 also has an inner surface protrusion 76 </ b> T protruding from the surface of the upper frame 60 facing inward in the short direction. The front end surface 76K of the inner surface protrusion 76T is flat and flush with the groove extension protrusion 75T of the first movable hinge protrusion 75. Further, both lateral portions of the front end surface 76K of the inner side surface projection 76T are inclined surfaces that are gently inclined with respect to the front end surface 76K.

  As shown in FIG. 6, a pair of positioning protrusions 61, 61 are formed to protrude from both ends of the upper surface of each short side portion of the upper frame 60. The positioning protrusion 61 is formed with a rib-shaped central protrusion 61T extending in the vertical direction at the center in the left-right direction on the surface facing the inner side of the upper frame 60. The front end surface 61K (see FIG. 9) of the central protrusion 61T is a flat surface orthogonal to the upper surface of the upper frame 60. Further, the outer edge portions at both ends in the longitudinal direction of the rotation lid 74 are cut out so that the ends near the rotation center avoid interference with the positioning protrusions 61.

  As shown in FIG. 6, the first to third fixed hinge protrusions 62, 63, 64, the first and second movable hinge protrusions 75, 76, and the positioning protrusion 61 group of the sub-container 50 are arranged in four directions. The portion surrounded by is a protrusion receiving recess 90 according to the present invention. When a plurality of sub-containers 50 are stacked, a lower surface protrusion (not shown) of the upper sub-container 50 is received by the protrusion receiving recess 90 of the lower sub-container 50, and the lateral displacement between the sub-containers 50, 50 is prevented. prevent. Further, the upper surfaces of the first to third fixed hinge protrusions 62, 63, 64 and the positioning protrusion 61 group are flush with the first and second movable hinge protrusions 75, 76 at a slightly higher position. Thus, the base surface contact portion 91 is configured. When a plurality of sub-containers 50 are stacked, the base surface contact portion 91 of the lower sub-container 50 comes into contact with the lower surface of the upper sub-container 50.

  This completes the description of the configuration of the container set 100 of the present embodiment. Next, the effect of the container set 100 will be described. In the container set 100 of the present embodiment, a plurality of sub-containers 50 and 50 can be stacked as described above, and a plurality of main containers 10 and 10 can be stacked. A pair of sub-containers 50, 50 can be stacked side by side, and one main container 10 can be stacked on a pair of sub-containers 50, 50 arranged side by side as shown in FIG.

  In order to stack a pair of sub-containers 50, 50 side by side on one main container 10, the lower surface protrusion of one sub-container 50 is fitted into the protrusion receiving recess 80 of the main container 10, After the sub-container 50 is moved toward one end in the longitudinal direction of the main container 10, the lower surface protrusion of the remaining sub-container 50 is fitted into the protrusion receiving recess 80. As a result, the pair of sub-containers 50, 50 are positioned in a state where they are arranged side by side on the main container 10.

  In order to stack one main container 10 on a pair of sub-containers 50, 50 arranged side by side, as shown in FIG. 11, a pair of sub-containers 50, 50 are joined together at their long sides. Then, the main container 10 may be lowered from above. Then, the pair of lower surface protrusions 12, 12 of the lower surface 11 </ b> K of the main container 10 are fitted into the protrusion receiving recesses 90 of the pair of subcontainers 50, 50, so that each subcontainer 50 is relative to the main container 10. Positioned (see FIG. 1).

  Further, the lower surface 11K of each main container 10 comes into contact with the base surface contact portion 91 of each sub-container 50. At that time, as shown in FIG. An interruption is made between them, and the sub-containers 50 and 50 are slightly separated. Thereby, the play of the lower surface protrusion 12 in the protrusion receiving recess 90 is suppressed.

  In addition, in order to suppress the backlash of the lower surface protrusion 12 in the protrusion receiving recess 90 more reliably, for example, when the partition protrusion 17 is interrupted between the sub-containers 50 and 50, the lower surface protrusion 12 The protrusions close to the opposing vertical surface 12X are provided on the second or third fixed hinge protrusions 63 and 64, or the protrusions are provided on the opposing vertical surface 12X of the lower surface protrusion 12 so that the partition ridges 17 are provided. You may make it the structure which adjoins to the 2nd or 3rd fixed hinge protrusion 63,64 when it interrupts between subcontainers 50,50.

  In addition, the third connecting protrusion 16 on the lower surface 11K of the main container 10 is received in the protrusion receiving groove 63M in the second fixed hinge protrusion 63 of the sub-container 50, for example, the luggage accommodated in the center of the lower surface of the main container 10. Is bent due to the weight of the third contact protrusion 16, the tip of the third connection protrusion 16 contacts the groove bottom surface 63A of the protrusion receiving groove 63M. Similarly, the second connecting ridges 15 and 15 on the lower surface 11K of the main container 10 are received in the ridge receiving grooves 75M and 75M in the first movable hinge protrusions 75 and 75 of the sub-container 50, respectively. The tip of the connecting protrusion 15 contacts the groove bottom surface 75A of the protrusion receiving groove 75M. Thus, in the present embodiment, the first and second connecting protrusions 15 and 16 that reinforce the lower surface 11K of the main container 10 are supported from below by the sub-container 50, and the lower surface 11K of the main container 10 is bent. Is suppressed. In addition, the first movable hinge protrusion 75 is provided with a groove extension protrusion 75T to increase the contact area between the tip of the second connecting protrusion 15, the first movable hinge protrusion 75, and the groove bottom surface 75A. Thus, the strength of reinforcement of the lower surface 11K of the main container 10 is increased. Further, the groove extension protrusion 75T of the first movable hinge protrusion 75 and the inner surface protrusion 76T of the second movable hinge protrusion 76 are shown in FIG. 10 when the rotating lid 74 of the sub-container 50 is opened. As shown, it can be used to support the weight of the rotating lid 74 by contacting the upper surface of the sub-container 50.

  By the way, as shown in FIG. 11, when the subcontainers 50 and 50 are arranged side by side, the subcontainers 50 and 50 may collide with each other and be too far apart from the regular arrangement. However, in the container set 100 of the present embodiment, even when the pair of sub-containers 50, 50 are shifted to the side away from the regular arrangement, when the main container 10 is stacked on the sub-containers 50, 50, The inclined sliding contact portion 13 of the main container 10 is in sliding contact with the sliding contact protrusions 62T and 62T (see FIGS. 6 and 12) of each sub container 50 so that the sub containers 50 and 50 are properly arranged. The lower surface protrusions 12 are attracted and smoothly received in the protrusion receiving recesses 90. That is, according to the main container 10 of the present embodiment, the main container 10 can be smoothly stacked on the pair of sub-containers 50, 50 arranged side by side.

  In addition, the base end portion of the inclined sliding contact portion 13 projects outward from the opposing vertical surface 12X of the lower surface protruding portion 12, while the distal end portion of the inclined sliding contact portion 13 is retracted inward from the opposing vertical surface 12X of the lower surface protruding portion 12. Therefore, the sliding contact distance at the inclined sliding contact portion 13 can be increased without overhanging the inclined sliding contact portion 13 beyond the opposing vertical surface 12X or withdrawing too much inside. As a result, the sub-containers 50 and 50 greatly deviated from the regular arrangement can also be drawn to the regular arrangement.

  Further, the outer frame rib 12B perpendicular to the lower surface 11K of the bottom base 11 and the sliding contact projection in the sub-container 50 are provided on the side surfaces other than the opposing side surfaces of the lower surface protrusions 12, 12 among the lower surface protrusions 12 of the main container 10. Since the front end surface 62K of the portion 62T and the front end surface 61K of the central protrusion 61T are opposed to each other so as to be able to come into surface contact with each other, the main container 10 is stacked on the subcontainers 50, 50 from the side. Even if an impact is applied, the sub-containers 50 and 50 are not easily displaced laterally with respect to the main container 10. Further, in addition to the engagement between the lower surface protrusion 12 and the protrusion receiving recess 90, the main container 10 is also connected by the concave and convex engagement between the first and second connecting protrusions 15 and 16 and the protrusion receiving grooves 63M and 75M. Since the positional deviation from the sub-container 50 is restricted, the stacked state of the main container 10 and the sub-container 50 is stabilized.

[Second Embodiment]
This embodiment is shown in FIG. 14 and FIG. 15, and the main container 10V has a width twice that of the main container 10 of the first embodiment, and includes four lower surface protrusions 12 on the lower surface 11K ( The point which can be piled up on the four subcontainers 50 differs from 1st Embodiment. Specifically, as shown in FIG. 15, the lower surface protrusions 12 are arranged side by side on the lower surface 11K of the main container 10V so as to form a 2 × 2 matrix. And the same inclined sliding contact part 13 as 1st Embodiment is formed in the opposing side surface of a pair of lower surface protrusions 12 and 12 located in a line in the transversal direction of the main container 10V among the lower surface protrusions 12 group, Between the opposing side surfaces of the lower surface protrusions 12 and 12, the same first to third connecting protrusions 14, 15, and 16 and partition protrusions 17 as in the first embodiment are formed.

  In addition, the opposing surfaces of the pair of lower surface protrusions 12, 12 aligned in the longitudinal direction of the main container 10 </ b> V in the lower surface protrusion 12 group are similar to the inclined sliding contact portions 13 at both lateral ends thereof. Inclined sliding contact portions 13V and 13V are provided. Moreover, in the part sandwiched between the inclined sliding contact portions 13V and 13V on the side surface of the lower surface protrusion 12, a pair of second connection protrusions 15V and 15V having the same cross-sectional shape as the second connection protrusion 15 are provided. The lower surface protrusions 12 and 12 are communicated with each other.

  In the container set 100V of the present embodiment, one sub-container 50 is arranged side by side so as to form a 2 × 2 matrix, and the main container 10V is stacked on the sub-containers so that each lower surface protrusion 12 is connected to each sub-container. 50 projection receiving recesses 90 can be fitted. At this time, even if the sub-containers 50 are separated from each other in the normal arrangement, the sub-containers 50 and 50 adjacent to each other between the vertical and horizontal sides are in contact with the sliding contact protrusion 62T (see FIG. 6) of the sub-container 50. The main container 10V is drawn so as to be in a regular arrangement by sliding contact with the inclined sliding contact portion 13 of the main container 10V. Further, between the sub-containers 50 adjacent to each other in the vertical and horizontal directions, the normal contact with each other by the sliding contact between the central protrusion 61T (see FIG. 6) of the sub-container 50 and the inclined sliding contact portion 13V of the main container 10V. Pulled to be placed. As a result, the main container 10V can be smoothly stacked on the sub-container 50 group arranged side by side in a matrix.

[Other Embodiments]
The present invention is not limited to the above-described embodiment. For example, the embodiments described below are also included in the technical scope of the present invention, and various other than the following can be made without departing from the scope of the invention. It can be changed and implemented.

(1) Although the main containers 10 and 10V and the sub-container 50 in the first and second embodiments are all folding containers, the present invention can be applied to ordinary containers that cannot be folded. Good.

(2) it is not part of the scope of the present invention, tilting the entire one side of the lower surface projection 12 may be configured to tilt Hasusuri contact portion.

(3) In the first and second embodiments, the lower surface protrusions 12 are arranged side by side in pairs on the lower surface 11K of the main containers 10 and 10V or arranged in a 2 × 2 matrix. Although illustrated, the present invention can be applied to any container in which the lower surface protrusions are arranged in a row or matrix, regardless of the number of the lower surface protrusions.

(4) In the first and second embodiments, the structure is such that one lower surface protrusion 12 is fitted to the protrusion receiving recess 90 of each sub-container 50. The present invention is provided with a container having a configuration in which one lower surface protrusion is fitted to a protrusion receiving recess of a small sub-container and a plurality of lower surface protrusions are fitted to a protrusion receiving recess of a large sub-container. You may apply.

10,10V Main container 11K Lower surface 12 Lower surface protrusion 12X Opposing vertical surface 13, 13V Inclined sliding contact portion 15, 15V Second connection protrusion (connection protrusion)
16 Third communication ridge (contact ridge)
50 Subcontainers 62, 63, 64 First to third fixed hinge projections 62T Sliding contact projections 63M, 75M Projection receiving grooves 74 Rotating lids 75, 76 First and second movable hinge projections 75T Groove extension Projection 90 Projection receiving recess 100,100V Container set

Claims (5)

Overall a rectangular parallelepiped shape, consists of a container bottom surface projections are arranged at intervals of a plurality of rectangles from inside the outer edge of its lower surface, and the container than a plane shape smaller rectangular plurality of sub-containers , and wherein the container is stacked on top of them in a state of side by side the plurality of sub-containers, the container sets the underside projection is fitted inside the protrusion receiving recess provided in the upper surface of each said sub-container In
An inclined sliding contact portion that rises obliquely from the lower surface of the container and guides the lower surface protrusion into the protrusion receiving recess is formed on all opposing side surfaces of the lower surface protrusions facing each other.
A vertical positioning portion is formed on all the non-opposing side surfaces other than the opposing side surface of the side surface of each of the bottom surface projections, and is perpendicular to the bottom surface of the container and can be brought into surface contact with the inner surface of the projection receiving recess ,
The inclined sliding contact portions are disposed at both ends in the lateral direction of the opposing side surface or at positions close to both ends, and an intermediate portion sandwiched between the inclined sliding contact portions among the opposing side surfaces is a lower surface of the container An opposing vertical surface rising vertically from the
The base end portion of the inclined sliding contact portion protrudes from the opposing vertical surface to the outside of the lower surface protrusion, while the distal end portion of the inclined sliding contact portion is retracted from the opposing vertical surface to the inside of the lower surface protrusion. Arranged,
Of the projection receiving recess of the sub-container, a portion facing the inclined sliding contact portion is projected from the portion facing the opposing vertical surface to the inside of the projection receiving recess to form a sliding contact projection. Container set. A projecting protrusion extending so as to communicate between the opposing vertical surfaces protrudes from the lower surface of the container, and a protrusion receiving groove for receiving the connecting protrusion is formed in the sub-container. The container set according to claim 1, wherein the connecting protrusion can be brought into contact with a bottom surface of the receiving groove. 3. The positional deviation between the container and the sub-container in the width direction of the connecting protrusion is regulated by the uneven engagement between the connecting protrusion and the protrusion receiving groove. Container set described in 3. A part of the projecting portion receiving recess facing the opposing vertical surface is projected into the projecting portion receiving recess together with the projecting portion receiving groove to form a groove extending projection. Or the container set of 3. The sub-container is provided with a pair of rotating lids for opening and closing its upper surface opening,
A movable hinge protrusion protruding from the upper surface of one outer edge of each of the rotating lids is rotatably connected in a state of being arranged between a plurality of fixed hinge protrusions protruding from the upper surface of the outer edge of the sub-container. And the inner surface of the movable hinge protrusion in a state where the rotating lid is closed forms a portion facing the opposite vertical surface,
The groove extension protrusion is provided on the inner surface of the movable hinge protrusion, and can be brought into contact with the upper surface of the sub-container when the rotating lid is rotated to a position facing the outer surface of the sub-container. The container set according to claim 4, wherein:

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