JP5914005B2 - container - Google Patents

Description

  The present invention relates to a container provided with a side opening for taking in and out a load from the side on one side, and a side door that opens and closes the side opening pivots around a lower end.

  As a conventional container of this type, as shown in FIG. 29A, one side wall of the container is a side door 2, the lower end of the side door 2, and the lower end opening of the side opening 1 opened and closed by the side door 2. The relay member 3 is provided between the edge 1A and the upper end portion of the relay member 3 and the lower end portion of the side door 2 are rotatably connected by the first rotation shaft 4 as shown in FIG. In addition, there is known one in which a lower end portion of the relay member 3 and a lower end opening edge 1A of the side surface opening 1 are rotatably connected by a second rotation shaft 5. In this container, the relay member 3 can be erected and the side door 2 can be folded inside the container, and the relay member 3 and the side door 2 can be both in an upright posture to make the entire container into a container shape. And as shown to FIG. 29 (A), it becomes possible to take in and out a load from the side by tilting both the relay member 3 and the side door 2 outward (for example, refer patent document 1).

Japanese Patent Laying-Open No. 2006-51966 (FIGS. 1, 14, and 17)

  However, in the conventional container described above, in a state where the relay member 3 and the side door 2 are both in the standing posture, the side door 2 is pushed by the load from the inside, and the connecting portion between the side door 2 and the relay member 3 As a result, the side door 2 and the relay member 3 can be rotated such that the first and second rotating shafts 4 and 5 are deformed.

  This invention is made | formed in view of the said situation, and the objective of this invention is to make the intensity | strength of the container which can take in / out a load from the side higher than before.

The container according to the invention of claim 1 made to achieve the above object comprises a side opening for taking in and out a load from a side of one side of a rectangular parallelepiped container, and a lower end opening edge of the side opening; A relay member is provided between the lower end portion of the side door that opens and closes the side opening, and the upper end portion of the relay member and the lower end portion of the side door are rotatably connected by the first rotating shaft, and the lower end of the relay member And the lower opening edge of the side opening are connected to each other by a second rotation shaft parallel to the first rotation shaft, and when the side door is closed, the second turn is performed below the first rotation shaft. In the container in which the moving shaft is located and the relay member and the side door can be rotated outwardly around the second rotation shaft so that the side door is in a horizontal posture, the lower end opening edge of the side opening and the side door In the vertical direction with the side doors standing A pair of door hinge recesses that communicate with each other and open to the outside are formed, and the relay member is received in the communication space of the pair of door hinge recesses, and the side doors of the lower end opening edges of the side openings edge of but a rounded corner or corner inclined plane lower surface of the side door is chamfered corners to pass while facing while becomes horizontal posture from the upright posture, the inner surface of the side door of the lower surface side doors from protrudes when the side door is leveled position, and door locking projections chamfered by Ru disposed side opening of the lower end opening edge of the corner formed chamfered inside space portion, the side opening lower opening edge It is formed, when the side door becomes vertical position, at which a Tobiragakaritome recess for restricting the outward movement of the lower end portion of the side door engages Tobiragakaritome projections and irregularities engagement Has characteristics.

  According to a second aspect of the present invention, in the container according to the first aspect, when the relay member is rotated to the end of the rotatable range to the outside, the first rotary shaft is obliquely below the second rotary shaft. The side door is pivotable until it is in a suspended position that is suspended from the first pivot shaft diagonally below the second pivot shaft, and the door locking projection that protrudes upward from the side door in the suspended position. It is characterized in that the tip of the part is configured to be located in a reference plane extending from the bottom surface of the side opening or positioned below the reference plane.

  The invention according to claim 3 is the container according to claim 2, wherein the surface of the door locking projection that faces the side opening in the hanging posture of the side door is inclined upward toward the side away from the side opening. It is characterized by the fact that it is a part inclined surface.

  A container according to a fourth aspect of the present invention is the container according to any one of the first to third aspects, wherein the pair of first side walls are disposed on a pair of opposite sides of the bottom wall of the container. The pair of second side walls disposed on the other pair of opposite sides rotate around the lower end portion, and are folded on the bottom wall in the order of the first and second side walls. In the container configured as described above, the hinge side wall protrusion protruding inward from the lower end of the first side wall and the end on the first side wall side of the bottom wall are recessed into a stepped shape, and the hinge side wall A hinge bottom wall recess that receives the lower end of the first side wall including the protrusion, and a first side wall rotation coupling mechanism that pivotally connects the hinge side wall protrusion to the bottom wall. , Characterized in that it is formed through the first side wall.

  A container according to the invention of claim 5 is the container according to any one of claims 1 to 3, and a pair of first side walls disposed on a pair of opposite sides of the bottom wall of the container. The pair of second side walls disposed on the other pair of opposite sides rotate around the lower end portion, and are folded on the bottom wall in the order of the first and second side walls. In the container configured as described above, one of the first side walls serves as a side door, one side of the container closed by the first side wall serves as a side opening, and an edge of the bottom wall as a lower end opening edge of the side opening; A feature is that a pair of door hinge recesses are formed at the lower end of the first side wall, and the relay member is received in the communication space of the pair of door hinge recesses.

[Invention of Claim 1]
In the container according to the first aspect, the side door can be opened and the luggage can be taken in and out from the side opening. Also, a pair of door hinge recesses are formed at the lower end opening edge of the side opening and the lower end portion of the side door, and the side door and the lower end opening edge of the side opening are connected to the communication space of the door hinge recess. By receiving the relay member for doing, the lower surface of the side door can be made adjacent to the lower end opening edge of the side surface opening. Then, when the side door is in the standing posture, the door locking projection on the lower surface of the side door engages with the door locking recess on the lower edge of the side opening and protrudes outward from the lower end of the side door. Since the movement is restricted, the load when the load presses the side door from the inside can be received by the door locking projection and the inner surface of the door locking recess, and the connecting portion of the side door and the relay member is on the outside It is possible to prevent a situation where the first and second rotating shafts are deformed. In other words, according to the present invention, the strength of a container that can take in and out a load from the side can be made higher than before. Further, when the side door is in a horizontal posture, the door locking projection is disposed in the chamfering space at the corner of the lower end opening edge of the side opening. Protrusions do not interfere.

[Invention of claim 2]
In the container according to claim 2, even when the relay member is rotated to the end of the rotatable range outward and the side door is suspended from the first rotation shaft, the door protrudes upward from the side door. Since the front end of the locking projection is located in the reference plane extending from the bottom surface of the side opening or located below the reference plane, the door locking projection does not hinder the loading and unloading of the luggage from the side opening. .

[Invention of claim 3]
According to the container of claim 3, since the surface facing the side opening side in the hanging posture of the side door among the door locking projections is a protruding portion inclined surface that is inclined upward and away from the side opening, Even if the load comes into contact with the door locking projection, it smoothly slides on the door locking projection. In addition, the projection inclined surface also serves as a guide for the door locking projection to engage with the door locking recess when the side door is in the standing posture, so that the operation of raising the side door is performed smoothly. be able to.

[Invention of claim 4]
The container according to claim 4 has a pair of first side walls arranged on a pair of opposite sides of the bottom wall and a pair of second side walls arranged on the other pair of opposite sides centering on a lower end portion. It can be rotated and overlapped on the bottom wall in the order of the first and second side walls to be folded. The hinge side wall protrusion protruding inward from the lower end of the first side wall is received in the hinge bottom wall recess of the bottom wall, and the hinge side wall protrusion is rotatably connected to the bottom wall. Therefore, when the first side wall is turned to the inside of the container, the lower end portion of the first side wall other than the hinge side wall protrusion is separated from the recessed portion of the hinge bottom wall so that the entire first side wall is above the bottom wall. Overlaid. Further, when the first side wall is in the upright posture, the lower end portion of the first side wall including the hinge side wall protrusion is accommodated in the hinge bottom wall recessed portion, and thereby the inner lower surface of the side opening on the first side wall The top surface of the bottom wall can be flush with the top surface of the bottom wall, and it can be placed at a slight height difference. It becomes possible to do. Moreover, in the container according to the present invention, since the load can be taken in and out from the side while the first side wall is maintained in the standing state, the load can be taken in and out from the side unless the first side wall is tilted outward. The strength is higher than a structure that cannot.

[Invention of claim 5]
The container according to claim 5 has a pair of first side walls arranged on a pair of opposite sides of the bottom wall and a pair of second side walls arranged on the other pair of opposite sides centering on a lower end portion. It can be rotated and overlapped on the bottom wall in the order of the first and second side walls to be folded. And since one side wall of the one side is used as a side door and one side surface of the container closed by the first side wall is used as a side opening, it is possible to easily take in and out from the side while dragging a load.

The perspective view of the container which concerns on one Embodiment of this invention A perspective view of the container with the top door opened and one of the first side walls folded. The perspective view of the container of the state which folded both the 1st side walls and folded one 2nd side wall Perspective view of the container in the folded state Perspective view of the bottom base Perspective view of one end of the lower end base Inner side perspective view of the second side wall External side perspective view of second side wall External perspective view of top door Inner side perspective view of the top door Perspective view of container opened with side doors in horizontal position Perspective view of container opened until side door is in hanging position External side perspective view of components of one first side wall Inner surface side perspective view of components of one first side wall Lower side perspective view of one first side wall Perspective view of rotating relay member Partially broken perspective view of container in which side door and first side wall are both upright Partially broken perspective view of container with side door in horizontal position and first side wall body in upright position Partially cutaway perspective view of container with side door in hanging position and first side wall body in upright position Side sectional view of the lower end of the side door and first side wall and the lower end base Partially broken perspective view of container with first side wall folded Partially broken perspective view of container in which side door and first side wall are both upright Partially cutaway perspective view of the side door and the lower end of the first side wall and the lower end base Partially cutaway perspective view of the side door and the lower end of the first side wall and the lower end base Partially broken perspective view of a container in a folded state Partially cutaway perspective view of container with both first side walls folded and one second side wall folded Partially broken perspective view of container in assembled state Partially broken perspective view of container in assembled state A perspective view of a conventional container

  Hereinafter, an embodiment of the present invention will be described with reference to FIGS. The container 10 of the present embodiment shown in FIG. 1 has a rectangular parallelepiped shape in plan view, and a pair of first side walls 30 and 30B according to the present invention are arranged on a pair of short sides of the rectangle. On the other hand, a pair of second side walls 70, 70 according to the present invention is disposed on a pair of long side portions. Further, the lower end portions of the first and second side walls 30, 30 </ b> B, 70, 70 are rotatably connected to the lower end base 11 constituting the bottom portion of the container 10. Furthermore, upper surface lids 80 and 80 are rotatably connected to the upper ends of the pair of second side walls 70 and 70. Then, as shown in FIG. 2, the top lids 80, 80 are opened so as to overlap the outer surface of the second side wall 70, and the pair of first side walls 30, 30B are tilted inward, As shown in FIG. 4, the entire container 10 can be folded by tilting one of the pair of second side walls 70, 70 inward in any order. Further, the container 10 can be brought into an assembled state by rotating the first and second side walls 30, 30B, 70, 70 in the reverse order to the above-described folding operation.

  Hereinafter, the detailed structure of each component, such as the said lower end base 11 and the 1st side wall 30 which comprise the container 10, is described. First, the lower end base 11 will be described. As shown in FIG. 5, the lower end base 11 has a rectangular groove structure in which a pair of side wall support projecting walls 12, 12 project upward from a pair of long side portions at the outer edge of the rectangular bottom wall 15. . A first upper surface recess 12B and a pair of second upper surface recesses 12C and 12C are formed on the upper surface of each side wall support protruding wall 12 at the center and both ends in the longitudinal direction, and each of these second upper surface recesses 12C. And the first upper surface recess 12B are upper surface protrusions 12A. Each of the second upper surface recesses 12C occupies, for example, about 1/10 of the entire length in the longitudinal direction of the side wall support projection wall 12, and the entire remaining length in the longitudinal direction of the side wall support projection wall 12 serves as a pair of upper surface projections 12A. , 12A and the first upper surface recess 12B, for example, are roughly divided into three parts.

  Note that a step surface that is slightly inclined with respect to the vertical surface is formed between the adjacent first upper surface recess 12B and the upper surface protrusion 12A, and between the upper surface protrusion 12A and the second upper surface recess 12C. Further, the lower end of the lower end base 11 is raised by the amount of protrusion of the upper surface protrusion 12A with respect to the second upper surface recess 12C at the portion of the lower surface outer edge of the lower end base 11 located directly below the upper surface protrusions 12A, 12A. The lower surface recess 15D is formed, and when the folded containers 10 are stacked, the upper surface protrusion 12A of the lower container 10 is engaged with the lower surface recess 15D of the upper container 10 in an uneven manner.

  A portion of each side wall supporting protruding wall 12 having the first upper surface recess 12B is provided with an arm receiving portion 14 at the center in the longitudinal direction, and the side wall supporting protruding wall 12 includes upper surface protruding portions 12A and 12A. The portion is provided with an arm receiving portion 14 at a position near both ends in the longitudinal direction. In addition, the arm receiving portion 14 is not provided in a portion of the side wall supporting protruding wall 12 that includes the second upper surface recess 12C.

  As shown in FIG. 6, the portion of the side wall support projecting wall 12 where the arm receiving portion 14 is provided is composed of two flat plates 12G and 12H facing each other in the thickness direction of the side wall support projecting wall 12 by vertical ribs (not shown). In addition to joining, the upper edges of the flat plates 12G and 12H are joined by the support upper surface wall 12J. The arm receiving portion 14 opens to the upper surface and the inner surface of the side wall support protruding wall 12 and extends in the vertical direction, and includes a step surface 14D at a position near the upper end thereof. Further, the lower side of the step surface 14D of the arm receiving portion 14 is a receiving main body portion 14S that is narrower than the upper side, and the upper surface protruding portion 12A of the side wall support protruding wall 12 is connected to the receiving main body portion 14S. The arm receiving portion 14 disposed in the provided portion and the arm receiving portion 14 disposed in the portion including the second upper surface recess 12C have the same structure. Specifically, the interior of each receiving main body portion 14S is wider than the side surface opening 14B (the opening on the inner side surface of the side wall support projecting wall 12). Further, retaining projections 14T and 14T (only one retaining projection 14T is shown in FIG. 6) are formed on the upper end portion of the receiving main body portion 14S so as to protrude from both side opening edges of the side surface opening 14B. ing. These retaining protrusions 14T have a substantially triangular shape in which the protruding amount from the opening edge of the side surface opening 14B increases as it goes downward.

  As shown in FIG. 5, the upper part of the arm receiving part 14 above the step surface 14D is wider on both sides than the receiving body part 14S. As shown in FIG. 6, the arm receiving portion 14 of the side wall supporting protruding wall 12 having the upper surface protruding portion 12A has a pair of L-shaped locking portions 14F, 14F on the upper portion of the step surface 14D. Have. These L-shaped locking portions 14F and 14F project from a pair of facing surfaces facing each other in the width direction of the arm receiving portion 14 above the stepped surface 14D to the side approaching each other, and bend at a right angle in the middle to receive the arm. The structure extends to the upper end of the portion 14. Further, the interval between the L-shaped locking portions 14F, 14F is slightly larger than the width of the receiving body portion 14S. The side wall support protruding wall 12 is formed with rectangular through holes 14K and 14K by cutting out a rectangular region sandwiched between the L-shaped locking portions 14F and 14F and the stepped surface 14D. On the other hand, as shown in FIG. 5, the arm receiving portion 14 of the side wall support protruding wall 12 having the first upper surface recess 12B has a structure in which the above-described L-shaped locking portion 14F does not have the rectangular through hole 14K. It has become.

  Between the side wall support projecting wall 12 having the arm receiving portion 14 and the pair of arm receiving portions 14 and 14 disposed on the upper surface projecting portion 12A, the pair of flat plates 12G and 12H are provided. Although it has a plate structure, the other portions are provided with only the flat plate 12G and the support upper surface wall 12J inside the two-plate structure portion, and the rib 12L protrudes from the flat plate 12G. Further, the rib 12L has a lattice structure in which a plurality of horizontal ribs 12N extending horizontally and a plurality of vertical ribs 12M are orthogonal to each other as shown in FIG.

  An engagement recess 16 is formed in the second upper surface recess 12 </ b> C on one end side in the longitudinal direction of the side wall support protruding wall 12. As shown in FIG. 6, the engagement recess 16 has an outer portion of the flat plate 12G surrounded by a pair of vertical ribs 12M and 12M, a support upper surface wall 12J, and a lateral rib 12N at the center of the second upper surface recess 12C. And is open to the upper surface and the inner side surface of the side wall support projecting wall 12. Further, the opening of the engaging recess 16 on the upper surface of the side wall support projecting wall 12 has a quadrangular shape and ranges from the edge on the inner surface side of the side wall support projecting wall 12 to the intermediate position in the plate thickness direction of the side wall support projecting wall 12. It is open at. Further, the pair of inner side surfaces facing each other in the engaging recess 16 are inclined so as to approach each other downward.

  As shown in FIG. 5, guide recesses 17, 17 are formed in the first upper surface recess 12 </ b> B at positions near both ends in the longitudinal direction. As shown in FIG. 6, the guide recess 17 has a structure in which a part of the support upper surface wall 12 </ b> J is depressed in a stepped shape and its bottom surface is curved in the thickness direction of the side wall support projecting wall 12.

  As shown in FIG. 5, a side wall of approximately ¼ height of the side wall support projecting wall 12 from the outer edge portion of the bottom wall 15 on the side where the engagement recess 16 is not arranged in the longitudinal direction of the lower end base 11. The support protrusion wall 18 protrudes, and both end portions of the side wall support protrusion wall 18 are connected to the inner surfaces of the side wall support protrusion walls 12 and 12. Further, side locking walls 19, 19 project inward from the side edge portion of the side wall supporting protruding walls 12, 12 where the side wall supporting protruding wall 18 is provided, and these side locking walls 19, 19 Is integrated with the side wall support projecting wall 18. Furthermore, arm receiving portions 18A having the same structure as the receiving main body portion 14S described above are provided at a plurality of locations in the longitudinal direction of the side wall support projecting walls 18.

  As shown in FIG. 6, on the side of the lower end base 11 where the engaging recess 16 is disposed, the end of the bottom wall 15 is recessed in a stepped shape to form a bottom wall recessed portion 20 for hinges. . Further, the upper surface 15S of the bottom wall body 15H excluding both ends of the bottom wall 15 (hereinafter simply referred to as “the upper surface 15S of the bottom wall 15” as appropriate) is a flat surface as a whole. A pair of side step protrusions 22 (one side in FIG. 6) is provided on the step surface 20D between the hinge bottom wall depression 20 and the upper surface 15S of the bottom wall 15 at both left and right ends. (Only the step protrusion 22 is shown), and a total of four places, two places adjacent to the pair of side step protrusions 22 and 22 and two places near the center of the step face 20D. Is formed with a rotation engaging portion 23. Each side step protrusion 22 has a plate shape integrated with the inner surface of the side wall support protrusion 12, and the upper surface of the side step protrusion 22 is flush with the upper surface 15 </ b> S of the bottom wall 15.

  The rotation engaging part 23 has a structure in which a locking protrusion 23A and a reinforcing protrusion 23B protruding from the step surface 20D are arranged vertically. The locking projection 23A protrudes from the step surface 20D larger than the reinforcing projection 23B, and the lower surface of the locking projection 23A is a flat surface orthogonal to the step surface 20D. Further, the upper end corner portion on the side away from the step surface 20D in the locking projection 23A is chamfered and inclined. On the other hand, the reinforcing protrusion 23B has a flat surface extending from the lower surface of the locking protrusion 23A to the bottom surface of the hinge bottom wall recess 20, and the flat surface gradually approaches the step surface 20D as it goes downward. Inclined to do.

  A pair of bottom surface protrusions 24, 24 project from the bottom surface of the hinge bottom wall recess 20. The bottom protrusion 24 is formed by bulging a part of the bottom wall of the hinge bottom wall recess 20 upward, and in the left-right direction of the hinge bottom wall recess 20, the rotation engaging portion 23 at the end. And the end portion between the pivot engaging portion 23 at the center position. The bottom surface protrusion 24 has a substantially rectangular parallelepiped shape extending in the left-right direction of the hinge bottom wall recess 20, and the surface of the bottom surface protrusion 24 facing the stepped surface 20 </ b> D side is a rotation engaging portion. It is arranged at a position away from the step surface 20D from the tip of 23, and is inclined so as to be slightly away from the step surface 20D as it goes upward. On the other hand, the surface of the bottom projection 24 opposite to the stepped surface 20D is disposed slightly inside the tip of the hinge bottom wall recessed portion 20 away from the stepped surface 20D. Stands upright from the bottom. Further, the upper surface of the bottom surface protrusion 24 is lower than the upper surface 15S of the bottom wall 15, and the edge of the upper surface of the bottom surface protrusion 24 away from the step surface 20D is so-called “R chamfered” and curved. Yes.

  The locking protrusions 21 and 21 protrude from both ends of the bottom surface of the hinge bottom wall recess 20 away from the step surface 20D, and one side of each locking protrusion 21 is The side wall support protruding wall 12 is connected.

  Next, the second side wall 70 will be described. Hereinafter, unless otherwise specified, the vertical direction, the upper end, the lower end, and the like of the second side wall 70 indicate the vertical direction, the upper end, the lower end, and the like of the second side wall 70 when the second side wall 70 is in the standing posture. And The same applies to the first side walls 30 and 30B described later. As shown in FIG. 8, the second side wall 70 is formed in a substantially rectangular shape that is horizontally long, and a part of the main plate portion 70 </ b> H bulges outward from a flat main plate portion 70 </ b> H that occupies most of the rectangle. And a side wall outer rib 79 projecting from the outer surface of the main plate portion 70H. Further, at the lower edge portion of the second side wall 70, the lower surface concave portion 70A, the concave and convex portions are opposite to the upper surface protrusion 12A, the first upper surface concave portion 12B, and the second upper surface concave portion 12C of the side wall support protruding wall 12 described above. A first lower surface protrusion 70B and a second lower surface protrusion 70C are formed, and a plurality of hinge arms 71 corresponding to the arm receiving portion 14 (see FIG. 5) are vertically provided from the lower end portion of the second side wall 70. It extends straight down.

  Specifically, as shown in FIG. 7, the rectangular groove-shaped reinforcing portion 77 has a rectangular groove shape when viewed from the inner surface side of the second side wall 70. A plurality of vertically elongated groove-shaped reinforcing portions 77A extending from the respective boundary portions of the lower surface protrusion 70B and the second lower surface protrusion 70C to the upper end portion of the second side wall 70, and a pair of vertically long angles at both ends in the left-right direction Between the groove-shaped reinforcing portions 77A and 77A, a pair of laterally long rectangular groove-shaped reinforcing portions 77B and 77B extending in the lateral direction are formed at the lower edge portion and the upper end position of the second side wall 70. In addition, although the upper surface of the horizontally long rectangular groove-shaped reinforcing portion 77B extending along the lower edge portion of the second side wall 70 extends in a straight line, the lower surface is recessed upward only in a portion provided with the lower surface recesses 70A and 70A. . In addition, a plurality of in-groove reinforcing ribs 77 </ b> C crossing the second side wall 70 are provided in a plurality of positions along the longitudinal direction inside each square groove-shaped reinforcing portion 77 in the inner surface of the second side wall 70. Yes.

  As shown in FIG. 8, the side wall outer rib 79 is formed along the upper edge and both side edges of the second side wall 70, and the upper region of each second lower surface protrusion 70 </ b> C of the second side wall 70. It is scattered in several places including.

  An engaging protrusion 76 is provided on the second lower surface protrusion 70 </ b> C on one end side in the left-right direction of the second side wall 70. The engaging protrusion 76 is formed by protruding a rib on the outer surface edge of a trapezoidal protruding piece obtained by extending a part of the main plate portion 70H downward. In addition, the engaging protrusion 76 is disposed between the longitudinal rib 79M disposed at the center in the longitudinal direction of the second lower surface protrusion 70C of the side wall outer surface rib 79 and the longitudinal elongated groove-shaped reinforcing portion 77A. In the width direction of the lower surface of the second side wall 70, the second side wall 70 is disposed in a range from the inner edge of the second side wall 70 to an intermediate position in the plate thickness direction of the second side wall 70. Note that the lower surface of the second lower surface protrusion 70C on the other end side of the second side wall 70 does not have the engagement protrusion 76 and is flat. In addition, a pair of guide protrusions 75 and 75 are provided at both lateral ends of the lower surface of the first lower surface protrusion 70B, and the second side wall 70 is connected to the lower end base 11 as will be described later. When the two side walls 70 are rotated, the guide protrusions 75 and 75 are in sliding contact with the inner surfaces of the guide recesses 17 and 17 of the lower end base 11.

  As shown in FIG. 7, rotation restricting protrusions 72, 72 project inward from both lateral edges of the second side wall 70. Each rotation restricting protrusion 72 has quadrilateral engagement holes 72A, 72A formed therethrough, and a frame-shaped reinforcing protrusion 72B protrudes from the opening edge of the engagement hole 72A on the inner surface of the rotation restricting protrusion 72. . Further, the rotation restricting protrusion 72 on the side edge of the second side wall 70 on the side of the engaging protrusion 76 extends from the upper end of the second side wall 70 to the center position in the vertical direction, on the opposite side. The rotation restricting projecting piece 72 at the side edge is shortened and extends from the upper end portion of the second side wall 70 to a position of approximately 1/3 in the vertical direction, and the number of engaging holes 72A is also one less. Further, a gate-shaped projecting piece 72K having the same structure as the frame-shaped reinforcing projecting part 72B protrudes inward from a position near the lower end of the side edge on the opposite side to the side edge on the engaging projecting part 76 side of the second side wall 70. Yes.

  At positions closer to both ends in the longitudinal direction of the second side wall 70, elastic engagement pieces 73, 73 are provided on an extension line of the above-described laterally elongated groove-shaped reinforcing portion 77B on the upper edge side. The elastic engagement piece 73 is formed by forming a “U” -shaped slit in the main plate portion 70H of the second side wall 70 and separating a part of the second side wall 70 into a cantilever shape extending in the horizontal direction. In addition, an engagement protrusion 73 </ b> T protrudes from the distal end portion of the elastic engagement piece 73 toward the inside of the container 10. The engaging protrusion 73 </ b> T gradually protrudes from the inner surface of the second side wall 70 toward the rotation restricting protrusion 72 and has a triangular shape with a flat surface facing the rotation restricting protrusion 72.

  At the upper end of the second side wall 70, for example, four lid support portions 74 are provided at positions closer to both ends in the longitudinal direction (more specifically, above the pair of lower surface recesses 70A and 70A). Protrusions are formed. A hinge shaft 74J is formed on the opposing surface of a pair of lid support portions 74, 74 adjacent to each other in the center of each lid support portion 74 group. Each lid support portion 74 is formed with an engagement groove 74M that is open on the inner surface side of the second side wall 70, and the end portions of these engagement grooves 74M are at both ends of each lid support portion 74 group. The adjacent lid support portions 74, 74 are also open to the opposing surfaces.

  As shown in FIG. 7, the entire upper surface of the second side wall 70 except for the portion where the lid support portion 74 is formed has a stepped structure in which the inner surface side is depressed from the outer surface side. The outer surface of the upper surface forms the upper upper surface 78B, while the inner surface forms the lower upper surface 78A.

  As shown in FIG. 8, each hinge arm 71 has a stepped shape on the lower side from the position near the upper end corresponding to the shape of the arm receiving portion 14 described above, and the width is narrowed. The narrow portion 71 </ b> A of the hinge arm 71 has substantially the same width as the receiving main body portion 14 </ b> S of the arm receiving portion 14. Further, the hinge arm 71 is formed by projecting a plurality of arm ribs 71L on the outer surface of the arm plate portion 71H flush with the main plate portion 70H, and some of the arm ribs 71L are on both sides of the arm plate portion 71H in the narrow portion 71A. It extends in the vertical direction along the edge portion and the central portion between both side edge portions, and is connected to the lower surface of the second side wall 70. Furthermore, the rotation center protrusions 71T and 71T protrude from both side surfaces at the lower end of the narrow portion 71A. In the hinge arm 71 disposed on the first lower surface protrusion 70B, the arm rib 71L protrudes from the entire outer edge portion of the arm plate portion 71H in the wide portion 71B of the hinge arm 71. On the other hand, in the hinge arm 71 disposed in the lower surface recess 70A, the arm rib 71L protrudes from the outer half of the lower half of the arm plate portion 71H of the wide portion 71B of the hinge arm 71, and the vertical direction of the wide portion 71B. Arm ribs 71L extending laterally are provided at intermediate positions, and a pair of upright engaging projections 71M and 71M in the form of a rectangular tube are formed from these hinge arms 71.

  Then, the rotation center protrusions 71T and 71T in each hinge arm 71 are accommodated below the retaining protrusions 14T and 14T (see FIG. 6) in each arm receiving portion 14 of the lower end base 11 so as to be movable up and down. When the second side wall 70 rotates around the protrusions 71T and 71T and the second side wall 70 is in a standing posture, the pair of upper surface protrusions 12A and 12A of the side wall supporting protrusion wall 12 are The pair of second lower surface protrusions 70C, 70C of the second side wall 70 are accommodated in the pair of second upper surface recesses 12C, 12C of the side wall support protrusion wall 12. Furthermore, the first lower surface projection 70B of the second side wall 70 is accommodated in the first upper surface recess 12B of the side wall support projection wall 12. In this state, although not shown, the upright engagement convex portion 71M group of the hinge arm 71 is engaged with the lower surface of the L-shaped locking portion 14F group in the arm receiving portion 14, and the vertical movement of the second side wall 70 is restricted. . In addition, as shown in FIG. 12, the engaging protrusion 76 of the second side wall 70 engages with the engaging recess 16 of the side wall support protruding wall 12. Further, the vertical rib 79M on both side edges in the left-right direction of the second side wall 70, the adjacent vertical rib 79M, and one side wall of the adjacent vertical elongated groove-shaped reinforcing portion 77A are respectively connected to the vertical rib 12M of the lower end base 11 respectively. Line up in a straight line.

  Next, the pair of upper surface lids 80 and 80 will be described. Hereinafter, unless otherwise specified, the vertical direction, the upper surface, the lower surface, and the like of the upper surface lid 80 indicate the vertical direction, the upper end, the lower end, and the like of the upper surface lid 80 when the upper surface lid 80 is closed. As shown in FIG. 9, each upper surface lid 80 includes a substantially rectangular main plate 80H, and the main plate 80H is reinforced by a lower surface rib 80L (see FIG. 10) and the outer edge portion of the main plate 80H. A plurality of door tip protrusions 83 are protruded from one of the long sides. Further, three groups of hinge engaging protrusions 81 are provided at positions near both ends of the other long side of the main plate 80H. Both of the hinge engaging protrusions 81 protrude upward from the upper surface of the upper cover 80. In addition, an engaging groove 81M opened upward is formed in the central hinge engaging protrusion 81 of each hinge engaging protrusion 81 group, and the remaining two hinge engaging protrusions 81, 81 are formed on both side surfaces. The hinge shaft 81J is formed. Further, as shown in FIG. 1, the hinge engaging protrusions 81 are arranged between the adjacent lid support portions 74, 74 in the lid support portion 74 group of the second side wall 70, and the engagement grooves 81M. And the hinge shaft 74J (see FIG. 7), and the hinge shaft 81J and the engaging groove 74M (see FIG. 7) are rotatably engaged. The top cover 80 can be changed from a closed state in which it projects horizontally inward from the upper end of the second side wall 70 to a fully open state that is superimposed on the outer surface of the second side wall 70.

  As shown in FIG. 9, the main plate 80 </ b> H is provided in a portion sandwiched between the hinge engaging protrusion 81 group and the hinge engaging protrusion 81 group in the outer edge portion of the upper surface lid 80 on the rotation center side. The outer edge of the upper lid 80 is formed on the outer edge of the upper lid 80 on the rotation center side, and the main plate 80H is disposed on the end side of the hinge engaging protrusions 81 group. The outer edge side protrusions 87 and 87 are formed extending outward. Further, the tips of the lid outer edge central protrusion 86 and the lid outer edge side protrusion 87 are retracted inward from the hinge engaging protrusion 81 group. Then, as shown in FIG. 26, when the upper surface lid 80 is fully opened by overlapping the outer surface of the second side wall 70, the lid outer edge central projection 86 and the lid outer edge side projection 87 are the upper upper surface 78B of the second side wall 70. It protrudes further upward. The amount of protrusion of the lid outer edge central protrusion 86 and the lid outer edge side protrusion 87 upward from the upper upper surface 78B of the second side wall 70 in the fully opened state is as follows. It is smaller than the protruding amount. Thus, when the second side wall 70 is folded, as shown in FIG. 25, a finger is placed between the front ends of the lid outer edge central projection piece 86 and the lid outer edge side projection piece 87 and the inner surface of the side wall support projection wall 12. An insertable finger insertion space is formed. When the container 10 is assembled, the second side wall 70 can be easily changed from the folded position to the standing position by placing the fingertip on the lid outer edge central protrusion 86 to easily raise the second side wall 70. Can do. Further, as shown in FIG. 27, when the upper cover 80 is closed, the cover outer edge central protrusion 86 and the cover outer edge side protrusion 87 are superimposed on the lower upper surface 78A of the second side wall 70, and the cover outer edge central protrusion 86 is overlapped. And the upper surface of the entire upper surface lid 80 including the upper surface of the lid outer edge side protrusion 87 is substantially flush with the upper upper surface 78B.

  The front end portion of the top cover 80 away from the rotation center is provided with the plurality of door front end protrusions 83 described above, and the door front end recesses 83 are adjacent to the door front end protrusions 83. In addition, back side support walls 85 are provided behind the middle portion in the depth direction of each door front end recess 84, and each back side support wall 85 is disposed at a position recessed from the top surface of the entire top cover 80. Then, as shown in FIG. 1, when the pair of upper surface lids 80, 80 are closed, the door front end protrusion 83 of the other upper surface lid 80 is accommodated in the door front end recessed portion 84 of one upper surface lid 80, and On the back side support wall 85 of the lid 80, the door tip protrusion 83 of the other upper surface lid 80 overlaps.

  As shown in FIG. 10, the lower surface rib 80L protrudes from the outer edge of both ends in the longitudinal direction of the upper surface lid 80 and the portion located on the inner side of the outer edge on the side provided with the hinge engaging protrusion 81 group. When the top cover 80 is closed, the bottom rib 80L is fitted inside the top opening of the container 10, as shown in FIG. Moreover, it is lower than lower surface rib 80L along the outer edge part of the longitudinal direction both ends of the upper surface cover 80, the outer edge part of the side provided with 81 groups of hinge engaging protrusions, and the outer edge part of each door front-end | tip protrusion 83. A lower surface protrusion 80T is formed. Furthermore, side wall locking projections 89 protrude downward from outer edge portions at both ends in the longitudinal direction of the upper surface lid 80. Notch portions 83A are formed at two locations on the lower surface protrusion 80T of the door front end protrusion 83 so as to cross the intermediate position in the protruding direction of the door front end protrusion 83, as shown in FIG. An upper surface protrusion 85T provided on the upper surface of 85 is received in the notch 83A. Further, as shown in FIG. 10, in a portion surrounded by the lower surface rib 80L of the upper surface lid 80, a part of the upper surface lid 80 is depressed from the upper surface side and bulges to the lower surface side to form a rectangular reinforcing bulge. A protruding portion 88 is formed.

  Next, the first side walls 30 and 30B will be described. The first side walls 30 and 30B have different structures. First, the 1st side wall 30 attached to the edge part of the side provided with the bottom wall recessed part 20 for hinges among the lower end bases 11 is demonstrated. As shown in FIG. 11, the first side wall 30 includes a side opening 30 </ b> W for taking in and out the luggage from the container 10, and the side opening 30 </ b> W is opened and closed by the side door 40. Here, with regard to the components of the first side wall 30 described below (the first side wall body 30H, the side door 40, etc.), the direction passing through the side opening 30W is referred to as the “front-rear direction”. The side toward the inside of the container 10 is referred to as “rear side”, and the opposite side, that is, the side toward the outside of the container 10 is referred to as “front side”.

  As shown in FIG. 13, the first side wall 30 includes a frame-shaped first side wall body 30 </ b> H whose inner side is the side opening 30 </ b> W described above. Of the parts constituting the four sides of the frame of the first side wall body 30H, the bottom side constituting wall 38 constituting the bottom side is wider in the front-rear direction of the first side wall body 30H than the parts constituting the other sides. It protrudes backward from the rear surface of the entire first side wall body 30H. And the part which protruded back from the rear surface of the whole 1st side wall main body 30H among the base side structure walls 38 is the side wall protrusion 35 for hinges which concerns on this invention.

  As shown in FIG. 14, the entire rear end surface of the hinge side wall protrusion 35 has a semicircular arc shape. Further, both side surfaces of the hinge side wall projection 35 are a pair of side flat surfaces 35B and 35B that are recessed from the both side surfaces of the entire first side wall main body 30H to the center side in the longitudinal direction of the bottom side constituting wall 38. Further, a protrusion locking portion 36 is provided at the lower end portion of the side flat surface 35B. A pair of protrusion receiving portions 35A and 35A are formed at two positions in the middle of the hinge side wall protrusion 35 in the longitudinal direction. Each protrusion receiving portion 35A is formed from the rear end in the front-rear direction of the bottom constituting wall 38 to the middle position, and opens upward and rearward. The protruding portion locking portion 36 is provided. As shown in FIG. 22, the protrusion locking portion 36 of the protrusion receiving portion 35 </ b> A includes a lateral side portion 36 </ b> B extending in the front-rear direction along the lower edge portion of the inner side surface of the protrusion receiving portion 35 </ b> A. The vertical side portion 36A protrudes upward from the rear end portion, and the lower end portions of the inner side surfaces of the protrusion receiving portion 35A communicate with each other by the protrusion locking portion 36. Further, as shown in FIG. 14, in the side flat surface 35B, the protrusion locking portion 36 protrudes laterally from the side flat surface 35B.

  As shown in FIG. 15, a pair of lower surface engaging recesses 38 </ b> A and 38 </ b> A that can be fitted to the pair of bottom surface protrusions 24 and 24 (see FIG. 6) are formed on the lower surface of the bottom side constituting wall 38. ing. Moreover, the rear side part of each bottom surface engaging recess 38A in the bottom side constituting wall 38 is a bottom side constituting wall 38J. Each of the bottom side constituting walls 38J is provided with a groove 38D extending in the lateral direction in parallel with the lower surface engaging recess 38A, and a plurality of internal ribs 38C are provided so as to partition the inside of the groove 38D in the longitudinal direction. It has been. Further, the lower end portions of the internal ribs 38 </ b> C are arc surfaces that are continuous with the arc surface of the rear end portion of the bottom side constituting wall 38. As shown in FIG. 13, square front side recesses 38 </ b> E and 38 </ b> E are formed at both ends in the longitudinal direction on the front surface of the bottom side constituting wall 38.

  As shown in FIG. 23 (A), the first side wall main body 30H is placed on the bottom wall 15, and the rear end portion of the bottom side constituting wall 38 is set to a stepped surface 20D from above the hinge bottom wall recessed portion 20. And the bottom projection 24 and is assembled to the lower end base 11. Then, as shown in FIG. 21, each protrusion locking portion 36 of the first side wall body 30 </ b> H can be locked to the lower surface of the locking protrusion 23 </ b> A in each rotation engaging portion 23 of the lower end base 11. Further, the side step protrusion 22 of the lower end base 11 is a gap formed by a step (see FIG. 15) between both side surfaces of the entire first side wall body 30H and the side surfaces of the protrusion locking portions 36 on the side flat surfaces 35B and 35B. It will fit. When the upper end side of the first side wall main body 30H is pulled up in this state, each bottom side constituting wall 38J is in sliding contact with the rear surface of the bottom projection 24, the top surface of the hinge bottom wall recessed portion 20 and the step surface 20D, and each bottom side configuration. The first side wall main body 30H rotates around the wall 38J. Then, as shown in FIGS. 23B and 24, when the first side wall body 30H is in the standing posture, the bottom surface protrusions 24, 24 of the lower end base 11 become the lower surface engaging recesses 38A, 38A of the first side wall body 30H. As shown in FIG. 22, each protrusion locking part 36 is locked to the lower surface of each locking protrusion 23A. In addition, the locking protrusions 21 and 21 of the lower end base 11 are accommodated in the front side recesses 38 </ b> E and 38 </ b> E of the bottom side configuration wall 38. As shown in FIG. 18, when the first side wall main body 30 </ b> H is in an upright state, the entire upper surface of the bottom side constituting wall 38 including the hinge side wall protrusion 35 is flush with the upper surface 15 </ b> S of the bottom wall 15.

  As shown in FIG. 13, the intersection of the upper surface and the front surface of the bottom constituting wall 38 is a so-called R chamfer to form an arc surface 38Z. In addition, a pair of door hinge recesses 37 and 37 are formed in front of the pair of protrusion receiving portions 35A and 35A in the bottom side wall 38. Each of the door hinge recesses 37 is formed from the front end portion of the bottom constituting wall 38 to the middle position in the front-rear direction, and is larger in the left-right direction of the bottom constituting wall 38 than the protrusion receiving portion 35A. It is open above and forward. Further, rotation support holes 37A and 37A are formed through the corners on the lower side of the rear portion of both inner side surfaces of the door hinge recesses 37, respectively.

  On the rear side adjacent to the door hinge recesses 37, 37 on the upper surface of the bottom constituting wall 38, door locking recesses 32, 32 having a horizontally long groove shape are recessed. Each door locking recess 32 extends longer than the door hinge recess 37 in the left-right direction of the bottom side wall 38, and a central portion in the longitudinal direction is divided by a protrusion receiving portion 35A. As shown in FIG. 20B, the front inner surface 32A and the rear inner surface 32B of the door locking recess 32 are inclined so as to be separated from each other upward.

  As shown in FIG. 13, the side constituting walls 39, 39 constituting the both side portions of the first side wall 30 are bent in a crank shape at the middle in the vertical direction, and the entire upper portion from the bent portions is the side surface. The side upper side components 39A and 39A protrude inward from the opening 30W. Moreover, the step part bent in a crank shape among the side side constituting walls 39, 39 is intermediate inclined portions 39B, 39B which are gradually inclined outward toward the lower side. Furthermore, a stopper wall 33 projects from the rear end of each side-side upper component 39A to the inside and outside of the side opening 30W. In addition, corner reinforcing walls 39C are provided at four corners inside the side opening 30W so as to obliquely cross these corners.

  As shown in FIG. 13, the front surface of the portion of the stopper wall 33 that protrudes inward from the upper side component 39A is surrounded by ribs and inner surfaces of the upper side component 39A at both upper and lower ends. A pair of engagement cylinder portions 39G and 39G are provided. Moreover, the closing protrusion 34 protrudes downward from the lower surface of the front end of the upper engagement cylinder portion 39G. The front surface of the closing projection 34 is an inclined surface that is inclined rearward downward. On the other hand, the rear surface of the closing protrusion 34 is a vertical surface parallel to the stopper wall 33.

  On the other hand, a plurality of first side wall connecting protrusions 31 are provided in a vertically arranged manner on the front surface of a portion of the stopper wall 33 that protrudes outward from the upper side component 39A. In addition, a locking recess 33A is formed in a recessed manner at a position near the upper end of the rear surface in a portion of the stopper wall 33 that protrudes outward from the side-side upper component 39A. Then, as shown in FIG. 12, when the first side wall body 30H is in the upright posture, the first side wall connecting projections 31 are engaged with the plurality of engaging holes 72A in the second side wall 70, and the locking recesses 33A. The engaging protrusion 73T (see FIG. 2) of the elastic engaging piece 73 of the second side wall 70 is locked. Further, as shown in FIG. 13, engagement recesses 30K and 30K that are open to the upper surface and the front surface are formed at two places where the upper surface and the front surface of the first side wall body 30H intersect. Then, as shown in FIG. 12, when the upper surface lids 80, 80 are closed, the side wall locking projections 89 of the upper surface lids 80 engage with the engaging recesses 30K.

  Next, the side door 40 will be described. As shown in FIG. 13, the side door 40 has a shape that is just fitted inside the side opening 30 </ b> W of the first side wall body 30 </ b> H. That is, the side door 40 is narrower on the upper side than the lower middle position than the lower side, and is provided with inclined surfaces 40B and 40B at the middle positions in the vertical direction on both sides of the side door 40, at the four corners. Are also provided with inclined surfaces 40C, 40C. Specifically, the side door 40 includes a square groove reinforcing portion 47 on the entire outer edge except for the upper ends of both side edges, and a portion of the side door 40 surrounded by the square groove reinforcing portion 47 is a flat plate portion 40G. It has become. These rectangular groove-shaped reinforcing portions 47 have a structure in which the outer edge portion of the flat plate portion 40G bulges forward in a rectangular groove shape, and a plurality of in-groove ribs 47M (see FIG. 14) are provided therein. Yes. Further, in the rectangular groove-shaped reinforcing portion 47 at the lower edge portion of the side door 40, the intersection between the front surface and the lower surface is a so-called R-chamfered arc surface 40 </ b> Z. Furthermore, at the positions near the upper ends of the side edge portions of the side door 40, the groove-constituting wall 47A on the outer side in the width direction of the rectangular groove-shaped reinforcing portion 47 is bent so as to be inclined inward, and the inner side in the width direction of the rectangular groove-shaped reinforcing portion 47 is bent. Connected to the groove constituting wall 47B, the above-described inclined surfaces 40B and 40B are constituted. And the groove | channel structure walls 47B and 47B inside the width direction in the square groove-shaped reinforcement parts 47 and 47 of the both sides of the side door 40 are extended upwards from inclined surface 40B and 40B, and strip | belt-shaped side walls 47D and 47D are formed, The strip-shaped side walls 47 </ b> D and 47 </ b> D are connected to the rectangular groove-shaped reinforcing portion 47 at the upper edge of the side door 40.

  Side projection walls 44A and 44A project laterally from the front edge of each strip-like side wall 47D and the inclined surface 40C of each upper corner. And as shown in FIG. 14, the protrusion protrusions 44K and 44K protrude toward the back from the up-and-down both ends position in the rear surface of each side protrusion wall 44A. Further, a notch portion 44B for visually confirming the closing member 43 described below from the front is formed in a portion of the side protruding wall 44A sandwiched between the protruding protrusions 44K and 44K. Further, from the front edge portion of each inclined surface 40C at the lower corner portion, as shown in FIG. 13, the cover protrusion 44E that is edged from a part of the square groove-shaped reinforcing portion 47 at each side portion of the side door 40. Protrudes to the side.

  As shown in FIG. 13, the front side of the side door 40 is provided with intermediate lateral ribs 44C that communicate between the lower end portions of the strip-like side walls 47D and 47D, and the side door 40 is positioned at both ends of the inclined surface 40C. Upper and lower connecting walls 44D and 44D are provided to communicate between the rectangular groove-shaped reinforcing portion 47 at the upper edge and the intermediate lateral rib 44C. Then, a horizontally long and flat rectangular parallelepiped closure release operation member 43H is accommodated between the vertical connection walls 44D and 44D so as to be movable up and down, and the closure members 43 and 43 protruding from the closure release operation member 43H to both sides are provided. Both of the upper and lower connecting walls 44D, 44D and the belt-like side walls 47D, 47D project laterally from the belt-like side walls 47D, 47D through the vertically long through holes 47E, 47E. In addition, an elastic member (not shown) is provided on the surface of the closure release operation member 43H facing the flat plate portion 40G, and the closure release operation member 43H is urged toward the upper end side in the up and down movable range by the elastic member. . The closing member 43 has a triangular prism shape, and includes two inclined surfaces on the rear side and a vertical surface parallel to the vertical direction on the front side. When the side surface opening 30W of the first side wall main body 30H is closed by the side surface door 40, the inclined surface of the closing member 43 is slidably contacted with the closing protrusion 34 of the first side wall main body 30H and lowered in the process. When the side opening 30W is completely closed, the closing member 43 returns to the upper end position of the movable range and is locked to the closing protrusion 34. Thereby, the side surface door 40 is hold | maintained in the state which closed the side surface opening 30W. Further, in a state where the side door 40 is closed, the respective protrusions 44K of the side door 40 are concavo-convexly fitted into the engagement cylinder portion 39G of the first side wall body 30H. On the other hand, in order to open the side door 40, the locking of the closing member 43 with respect to the closing protrusion 34 is released by putting a finger on the finger hooking portion 43A provided at the center of the front surface of the closing release operating member 43H and pushing it down. Just pull 40 forward.

  As shown in FIG. 13, a pair of door hinge recesses 41, 41 are provided at two locations on the lower edge of the side door 40, corresponding to the door hinge recesses 37, 37 of the first side wall body 30H. Yes. As shown in FIG. 17, each door hinge recess 41 is open forward and downward, and the first side wall body 30 </ b> H and the door hinge recesses 37, 41 of the side door 40 have front and rear depths and left and right sides. The direction width is the same. Further, rotation support holes 41A and 41A are formed through the corners on the upper rear side of both inner side surfaces of each door hinge recess 41, respectively.

  As shown in FIG. 1, relay members 50 and 50 are accommodated in a space formed by communication between the door hinge recesses 37 and 37 of the first side wall 30 and the door hinge recesses 41 and 41 of the side door 40. ing. As shown in FIG. 16A, the relay member 50 includes first and second rotating shafts 51A and 51B extending in parallel in the lateral direction of the first side wall 30 and arranged in the vertical direction. The intermediate portions in the longitudinal direction of the rotary shafts 51A and 51B are connected by a connecting plate portion 53. Further, the first and second ends 53 </ b> Y of the connection plate portion 53 from the first end surface 53 </ b> X of the connection plate portion 53 to the first end surfaces 51 </ b> A <b> 1 and 51 </ b> B <b> 1 of the second rotation shafts 51 </ b> A and 51 </ b> B. The distances to the other end surfaces 51A2 and 51B2 of the rotary shafts 51A and 51B are approximately twice as large. Furthermore, the slide regulating plate 52 is connected to the center of the intersection between the one end surface 53X of the connecting plate portion 53 and the front surface via a thin flexible hinge 50H. Then, as shown in FIGS. 16B to 16C, when the slide restricting plate 52 is rotated and superimposed on the front surface of the connecting plate portion 53, the flexible hinge 50H of the slide restricting plate 52 is removed. The distance from the end surface 52Y on the far side to the other end surfaces 51A2 and 51B2 of the first and second rotating shafts 51A and 51B is the same as the first and second rotating shafts 51A and 51B. The distance between the end surfaces 51A1 and 51B1 of 51B is substantially the same.

  In order to hold the slide regulating plate 52 in a state where it is overlapped with the front surface of the connecting plate portion 53, a rectangular hole 53A is formed at a position near the other end surface 53Y in the connecting plate portion 53 as shown in FIG. In the rectangular hole 53A, the engaging protrusion 54 formed at the center of the opening edge on the other end surface 53Y side of the connecting plate portion 53 is disposed so as to overlap the front of the rectangular hole 53A. On the other hand, the slide restricting plate 52 is formed with a horizontally-long rectangular protrusion receiving hole 52B that can receive the locking protrusion 54, and has a rectangular protrusion 52A that can be engaged with the rectangular hole 53A. Approximately half of the protrusion receiving hole 52B is covered by the protrusion 52A. Then, when the slide restricting plate 52 is rotated and pressed against the front surface of the connecting plate portion 53, the locking projection 54 is slidably deformed with the rectangular protrusion 52 </ b> A, and the slide restricting plate 52 overlaps the front surface of the connecting plate portion 53. Now, as shown in FIG. 16D, the locking protrusion 54 is received in the protrusion receiving hole 52B and locked to the back surface side of the rectangular protrusion 52A. As a result, the slide restricting plate 52 is held in a state of being overlapped with the front surface of the connecting plate portion 53.

  Further, the end portion on the flexible hinge 50H side of the slide restricting plate 52 is narrow, while the end portion on the flexible hinge 50H side of the front surface of the connecting plate portion 53 is paired up and down. Positioning protrusions 53T and 53T are formed. When the slide restricting plate 52 is superimposed on the front surface of the connecting plate portion 53, the narrow portion of the slide restricting plate 52 is fitted between the positioning protrusions 53T and 53T. Further, an end protrusion 52T is formed at the end of the slide restricting plate 52 opposite to the flexible hinge 50H so as to face the rectangular protrusion 52A across the protrusion receiving hole 52B. The end face on the opposite side of the rectangular protrusion 52A in the protrusion 52T is the other end face 52Y of the slide restricting plate 52 described above.

  The relay member 50 is assembled to the side door 40 and the first side wall body 30H as follows. That is, as shown in FIG. 1, the side door 40 is fitted into the side opening 30 </ b> W of the first side wall body 30 </ b> H so that the door hinge recesses 37 and 41 communicate with each other. The slide restricting plate 52 is bent at a right angle with respect to the connecting plate portion 53, and the ends of the first and second rotation shafts 51A and 51B on the side away from the flexible hinge 50H are paired with a pair of rotation support holes. The relay member 50 is slid in the left-right direction in the door hinge recesses 37 and 41 after being inserted into the door hinges 37A and 41A, and the end of the first and second rotary shafts 51A and 51B on the flexible hinge 50H side. The part is inserted into the pair of rotation support holes 37A and 41A. Then, the slide restricting plate 52 is pressed against the front surface of the connecting plate portion 53 so that the locking protrusion 54 is locked to the rectangular protruding portion 52A, and the slide restricting plate 52 and the connecting plate portion 53 are overlapped. As a result, the relay member 50 cannot slide in the left-right direction within the door hinge recesses 37 and 41 and is prevented from coming off, and the side door 40 is pivotally connected to the first side wall body 30H. .

  With the above-described structure, as shown in the change in FIGS. 17 to 18, the side door 40 rotates around the second rotation shaft 51B from the standing posture to the horizontal posture. When the side door 40 is in a horizontal posture, the rear surface of the side door 40 is the top surface 15S of the bottom wall 15 and the bottom surface of the side opening 30W in the first side wall body 30H (that is, the top surface of the bottom side constituting wall 38 in the first side wall body 30H). ). At this time, the first rotation shaft 51 </ b> A is disposed at a position farther forward than the lower end base 11. Then, the side door 40 is pivoted downward about the first pivot shaft 51A, so that the side door 40 is drooped vertically downward as shown in the change in FIGS. it can. When the container 10 of this embodiment is placed on a horizontal floor surface or the like and the side door 40 is rotated to a position where the side door 40 contacts the floor surface, the side door 40 rotates. It will be in the state which inclined so that it may fall slightly as it leaves | separates from a moving center.

  As shown in FIG. 14, a pair of concave and convex engagement with the pair of door locking recesses 32, 32 of the first side wall body 30 </ b> H is provided at the lower rear end edge of the side door 40 when the side door 40 is closed. Door locking projections 42, 42 are provided. As shown in FIG. 20A, the rear surface 42 </ b> B of the door locking projection 42 is flush with the rear surface of the entire side door 40. Further, the front surface of the door locking protrusion 42 is a protrusion inclined surface 42 </ b> A that is inclined backward toward the tip of the door locking protrusion 42. When the side door 40 is closed, the protrusion inclined surface 42A of the door locking protrusion 42 comes into surface contact with or adjacent to the front inner surface 32A of the door locking recess 32. Also, as shown in FIG. 20B, when the side door 40 is in a horizontal position, the door locking projection 42 is the front surface of the bottom side constituting wall 38 of the first side wall body 30H (reference numeral 38F in FIG. 20B). ), The protrusion inclined surface 42A of the door locking protrusion 42 is adjacent to the arcuate surface 38Z of the bottom constituting wall 38. That is, when the side door 40 is in a horizontal posture, the door locking protrusion 42 is disposed in the chamfering space S (see FIG. 20C) formed by chamfering the corners of the bottom constituting wall 38. become. Further, as shown in FIG. 20C, when the side door 40 is in a suspended position, the first rotation shaft 51A side of the relay member 50 is slightly lowered from the second rotation shaft 51B, and the door locking protrusion 42 is formed. The tip of the first side wall body 30H is located in the reference plane K extending from the upper surface of the bottom side constituting wall 38 (that is, the bottom surface of the side surface opening 30W) or positioned below the reference plane K.

  Finally, the first side wall 30B attached to the end of the lower end base 11 on the side provided with the side wall support protrusion wall 18 will be described. A part of the first side wall 30B is shown in FIG. 2 and does not have the side opening 30W and the side door 40, and has a rectangular flat plate structure as a whole. A plurality of hinge arms (not shown) having the same shape as the narrow portion of the hinge arm 71 are provided on the lower surface of the first side wall 30B. Then, like the above-described engagement between the hinge arm 71 and the arm receiving portion 14, the plurality of hinge arms on the first side wall 30B engage with the arm receiving portion 18A (see FIG. 5) of the lower end base 11, thereby As with the second side wall 70, the first side wall 30B rotates between the standing posture and the folding posture. In addition, the above-described locking recess 33A and the first side wall connecting protrusion 31 (see FIG. 14) are formed at the upper ends of both side edge portions on the outer surface of the first side wall 30B, and further, on the outer surface of the first side wall 30B. A first side wall connection protrusion 31 (see FIG. 14) is also formed at a position near the lower end of both side edges. When the first side wall 30B is in the upright posture, the first side wall connecting protrusions 31 are engaged with the engagement holes 72A in the rotation restricting protrusion 72 of the second side wall 70 and the inside of the portal protrusion 72K. At the same time, the engagement protrusion 73T of the elastic engagement piece 73 is locked to the locking recess 33A. Further, the engaging recesses 30K and 30K (see FIG. 14) are formed on the upper edge of the first side wall 30B, and the side wall locking projection 89 of the upper surface lid 80 is uneven in the engaging recesses 30K and 30K. Engage.

  This completes the description of the configuration of the container 10 of the present embodiment. Next, the effect of this container 10 is demonstrated. When the container 10 is folded, as shown in FIG. 2, the upper lids 80 and 80 are opened and overlapped with the outer surfaces of the second side walls 70 and 70, and the upper ends of the first side walls 30 and 30 </ b> B are placed on the container 10. Tap inward. Then, due to the impact, the engagement between the engagement protrusion 73T and the first side wall 30 is released, and the first side walls 30 and 30B are tilted inward. Here, in the container 10 of the present embodiment, the hinge side wall protrusion 35 protruding inward from the lower end of the first side wall 30 provided with the side door 40 is received in the hinge bottom wall recess 20 of the bottom wall 15. Since the hinge side wall protrusion 35 is pivotally connected to the bottom wall 15 in the hinge bottom wall recess 20, when the container 10 is turned inside the first side wall 30, FIG. ), The lower end of the first side wall 30 other than the hinge side wall protrusion 35 is detached from the hinge bottom wall depression 20 and the entire first side wall 30 is superimposed on the bottom wall 15. become. And as shown in FIG. 4, the 2nd side walls 70 and 70 can be folded on the 1st side walls 30 and 30B, and the container 10 whole can be made into a folding state.

  In order to put the folded container 10 into the assembled state, as shown in FIG. 2, the first side walls 30 and 30B are raised after the second side walls 70 and 70 are raised. Then, a lower end portion of the first side wall body 30H including the hinge side wall protrusion 35 in the first side wall 30 is accommodated in the hinge bottom wall recessed portion 20, and an inner lower surface of the side opening 30W and an upper surface 15S of the bottom wall 15 are formed. Become the same. Further, the first side walls 30 and 30B are elastically deformed by the elastic engagement pieces 73 and 73 immediately before the first side walls 30 and 30B are in the upright state, and pass through the engagement protrusions 73T and 73T. 73T and 73T are engaged with the inner surfaces of the first side walls 30 and 30B. Further, the first side walls 30, 30 </ b> B in the standing state are sandwiched between both end portions of the second side walls 70, 70, thereby restricting the inward rotation of the second side walls 70. Furthermore, in the 1st side wall 30B which does not have the side door 40, the engagement hole 72A and the 1st side wall connection protrusion 31 are engaged in the upper end side of the both-sides edge part, and the portal protrusion is in the lower end side of both side edge parts. The entire side edge of the second side wall 70 is connected to the first side wall 30 </ b> B by engaging the piece 72 </ b> K with the first side wall connecting protrusion 31, and movement of the second side wall 70 to the outside is restricted. .

  On the other hand, in the first side wall 30 having the side door 40, the engagement hole 72A and the first side wall connecting projection 31 are engaged on the upper end side of both side edge portions, but on the lower end side of both side edge portions. Since the gate-shaped protruding piece 72K and the first side wall connecting protrusion 31 are not provided, only the upper end portion of the side edge of the second side wall 70 is connected to the first side wall 30, and the second side wall 70 is connected by the first side wall 30. Only the upper end portion of the lens is in a state in which the outward movement is restricted. Instead, the engaging protrusion 76 on the lower surface of the second side wall 70 and the engaging recess 16 on the upper surface of the side wall supporting protruding wall 12 are engaged, and the lower end portion of the second side wall 70 is formed by the side wall supporting protruding wall 12. Is in a state where movement to the outside is restricted.

  Further, when the upper surface lids 80 and 80 are closed in a state where the first side walls 30 and 30B and the second side walls 70 and 70 are raised, the lower surface ribs 80L (see FIG. 10) of the upper surface lids 80 and 80 become the first side wall 30. 30B, as shown in FIG. 12, the side wall locking projections 89 of the upper surface lids 80 are engaged with the engagement recesses 30K of the first side walls 30, 30B. Also, the first side walls 30 are held in the standing state while the rotation to the inside and the outside is restricted.

  In the assembled state, for example, the container 10 can be opened from the upper surface side of the container 10 by opening the upper surface lids 80 and 80. When a plurality of containers 10 are stacked, the upper and lower containers 10 and 10 are positioned by engaging the lid support 74 group of the upper container 10 with the lower surface recess 15D of the lower container 10. . Then, by opening the side door 40 of the container 10, it is possible to take out the luggage from any container 10 while maintaining the stacked state of the containers 10 and 10.

  In order to open the side door 40, the closing release operation member 43H is pushed down to release the engagement between the closing member 43 and the closing projection 34, and the side door 40 is pulled forward. Then, the side door 40 is rotated together with the relay member 50 to a position where the side door 40 is in a substantially horizontal posture with the second rotation shaft 51B at the lower end of the relay member 50 as a center (see FIG. 18). At this time, the relay member 50 protrudes forward from the door hinge recess 37 of the first side wall body 30H. Then, by rotating the side door 40 downward about the first rotation shaft 51A with respect to the relay member 50, as shown in FIG. 19, outside the first side wall body 30H of the relay member 50. It is possible to adopt a hanging posture in which the side door 40 is suspended from the protruding portion. Thereby, the side door 40 of the upper container 10 can be hung vertically downward without interfering with the lower container 10, and the luggage can be easily taken from any container 10 without the side door 40 getting in the way. Can be taken out.

  Further, when the side door 40 is in the hanging position, the first rotating shaft 51A is positioned slightly below the second rotating shaft 51B, and as shown in FIG. The door locking projection 42 provided on the upper surface of the side door 40 is positioned substantially flush with or below the bottom surface of the side opening 30W and the upper surface 15S of the bottom wall 15. Thereby, a load can be dragged out from the side surface opening 30 </ b> W of the container 10 without hindering the door locking projection 42. Moreover, since the surface which faces the side opening 30W side in the hanging attitude | position of the side door 40 among the door latching protrusions 42 becomes the protrusion inclined surface 42A inclined toward the side away from the side opening 30W upward, Even if the load comes into contact with the door locking projection 42, it smoothly slides on the door locking projection 42.

  In order to close the side door 40, the side door 40 may be pushed into the side opening 30W of the first side wall body 30H. Then, the closing member 43 gets over the closing protrusion 34 and engages with the inside of the closing protrusion 34, and the side door 40 is held in the closed state. Further, when the side door 40 is closed, as shown in FIG. 20A, the door locking projection 42 of the side door 40 engages with the door locking recess 32 of the first side wall body 30H. At this time, the protrusion inclined surface 42A also serves as a guide for engaging the door locking protrusion 42 with the door locking recess 32 in an uneven manner, so that the operation of raising the side door 40 can be performed smoothly. And since the movement to the outer side of the lower end part of the side door 40 is regulated by the concave and convex engagement of the door locking projection 42 and the door locking recess 32, when the load presses the side door 40 from the inside The load can be received by the protrusion inclined surface 42A of the door locking protrusion 42 and the front inner surface 32A of the door locking recess 32, and the connecting portion between the side door 40 and the relay member 50 bulges outward, A situation in which the second rotating shafts 51A and 51B are deformed can be prevented. In other words, according to the present embodiment, the strength of the container 10 capable of loading and unloading luggage from the side can be made higher than before.

[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) In the above embodiment, the container 10 is illustrated in which the side wall 30W is provided in the first side wall 30 so that the luggage can be taken out from the side. However, for example, the container disclosed in Japanese Patent Application Laid-Open No. 2006-51966 As described above, the present invention may be applied to a structure in which the first side wall can be rotated not only inside but also outside so that a load can be taken in and out from the side. Specifically, the first side wall is a side door according to the present invention, one side of a container closed by the first side wall is a side opening, and the edge of the bottom wall as the lower end opening edge of the side opening is A pair of door hinge recesses similar to the pair of door hinge recesses 37 and 41 described above is formed at the lower end of one side wall, and the relay described above is connected to the communication space of the pair of door hinge recesses. A relay member similar to the member 50 may be received.

  (2) The protrusion inclined surface 42A of the door locking protrusion 42 of the above embodiment is flat, but may be rounded. In addition, the corners of the bottom constituting wall 38 are chamfered so as to form the arc surface 38Z, but the corners of the bottom constituting wall 38 may be chamfered so that a flat slope is formed at the corner. .

DESCRIPTION OF SYMBOLS 10 Container 15 Bottom wall 30 1st side wall 30W Side surface opening 37,41 Door hinge recessed part 32 Door latching recessed part 32A Front inner surface 37,41 Door hinge recessed part 41A, 41A Rotation support hole 42 Door latching protrusion 42A Projection Inclined surface 51A First rotating shaft 51B Second rotating shaft 70 Each second side wall K Reference plane S Chamfering space

Claims (5)

A side opening is provided on one side of a rectangular parallelepiped container for loading and unloading from the side, and a relay member is provided between the lower end opening edge of the side opening and the lower end of the side door that opens and closes the side opening. The upper end portion of the relay member and the lower end portion of the side door are rotatably connected by a first rotation shaft, and the lower end portion of the relay member and the lower end opening edge of the side opening are connected to the first time. When the second door is closed, the second rotary shaft is positioned below the first rotary shaft when the side door is closed. In a container capable of turning the relay member and the side door outward with the moving shaft as a center to bring the side door into a horizontal posture,
A pair of door hinge recesses are formed on the lower end opening edge of the side opening and the lower end portion of the side door so as to communicate with each other in the vertical direction in the standing posture of the side door and open to the outside. The relay member is received in the communication space of the recess for the pair of door hinges,
Said rounded corner or corner inclined plane lower surface of the side door is chamfered corners to pass while facing while the side door is in said horizontal posture from the upright position of the lower end opening edge of the side opening ,
A surface formed at a corner of the lower end opening edge of the side opening by the chamfering when protruding from the inner surface side edge of the side door among the lower surface of the side door and when the side door is in the horizontal posture. and door locking projections that will be placed in the space taken,
Formed at the lower end opening edge of the side opening, and when the side door is in the upright posture, it engages with the door locking projection to restrict the movement of the lower end of the side door to the outside. A container characterized by comprising a door locking recess . When the relay member is rotated to the end of the outer rotatable range, the first rotation shaft is located obliquely below the second rotation shaft,
The side door can be rotated until it is in a hanging position hanging from the first rotation shaft obliquely below the second rotation shaft,
The front end of the door locking projection that protrudes upward from the side door in the hanging position is configured to be located in a reference plane extending from the bottom surface of the side opening or positioned below the reference plane. The container according to claim 1.   The surface of the door locking projection that faces the side opening in the hanging posture of the side door is a projection inclined surface that is inclined upward and away from the side opening. Item 3. The container according to Item 2. The container according to any one of claims 1 to 3, wherein the container is disposed on a pair of first side walls disposed on a pair of opposed sides of the bottom wall and on the other pair of opposed sides. A pair of second side walls that rotate around the lower end, and are stacked on the bottom wall in the order of the first and second side walls, in a folded state,
The hinge side wall protrusion protruding inward from the lower end of the first side wall, and the end of the first side wall side of the bottom wall is recessed in a stepped shape, and includes the hinge side wall protrusion. A hinge bottom wall recess that receives the lower end of the first side wall; and a first side wall pivot coupling mechanism that pivotally couples the hinge side wall protrusion to the bottom wall;
The container, wherein the side opening is formed through the first side wall. The container according to any one of claims 1 to 3, wherein the container is disposed on a pair of first side walls disposed on a pair of opposed sides of the bottom wall and on the other pair of opposed sides. A pair of second side walls that rotate around the lower end, and are stacked on the bottom wall in the order of the first and second side walls, in a folded state,
One of the first side walls is used as the side door, and one side of the container closed by the first side wall is used as the side opening.
The pair of door hinge recesses are formed at the edge of the bottom wall as the lower end opening edge of the side opening and the lower end of the first side wall so that the pair of door hinge recesses communicate with each other. A container characterized by receiving the relay member.