JP6370656B2 - Folding container - Google Patents

Description

  The present invention relates to a folded container made of foamed resin, which is provided with a pair of lids for closing an upper surface opening.

  Conventionally, as this type of folding container, a so-called cold insulation / warming box in which a pair of lids are rotatably connected to upper ends of a pair of side walls is known (see, for example, Patent Document 1). .

Japanese Patent Laid-Open No. 2002-240867 (FIG. 2)

  However, the above-described conventional folding container has a problem that since the front end surfaces of both lids are just abutted in the horizontal direction when the lid is closed, the hermeticity is low, and the cold and heat insulation properties are also low. On the other hand, if the tip overlapping parts that overlap each other in the vertical direction are provided at the tip parts of both lids in order to increase the cold and heat insulation properties, the turning radius of the lids increases, and the flat shape of the folding container is accordingly increased. There is a problem in that it cannot be folded unless it is made large, or the tip overlapping portion protrudes sideways greatly in the folded state. That is, in the conventional folding container, there is a problem that when the tip overlapping portion is provided, the folded state is not compact.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a folding container that has higher cold and heat insulation properties than before and has a compact folded state.

In order to achieve the above object, the invention according to claim 1 is a folding container made of foamed resin, wherein the side walls are rotatably connected to the respective outer edge portions of the base member having a rectangular shape in the shape of a plane. And a pair of first side walls opposed to each other among the side walls are folded on the base member, and the remaining pair of second side walls are then paired with the first pair of first side walls. A container body that can be changed to a folded state folded on top of the container, and a pair of lid bodies that half-close the upper surface opening of the container body in the assembled state in the opposing direction of the pair of second side walls. The pair of lids are formed at the front end portions of the pair of lids, and overlap with each other in the vertical direction with the pair of lids fully closed on the upper surface opening, and the upper ends of the second side walls. The side wall side hinge part connected so that movement was possible, and the said lid | cover And a relay member provided in parallel with a lid-side hinge portion that is rotatably connected to the relay member, and in the folded state, the relay member protrudes outward from the second side wall. Each of the lids is overlaid on the outer surface of each of the second side walls, while the relay member is inclined to the upper surface opening side in the assembled state, and the pair of lids has the upper surface opening. A flat side wall stopper surface that is configured to be fully closed and is inclined so that a part of the upper end surface of the second side wall is lowered toward the upper surface opening side, and the relay member is formed. A flat relay-side stopper surface that is in surface contact with the side wall-side stopper surface in an inclined posture and an upper end surface of the second side wall, and protrudes upward from a position closer to the inner surface of the second side wall than the side wall-side stopper surface. , The relay member in the inclined posture is on the side A displacement restricting projection for restricting the displaced obliquely downward along the side stop, a collapsed container, characterized in that is provided.

[Invention of Claim 1]
In the folding container according to the first aspect, since the upper surface opening is fully closed in a state in which the overlapping portions of the ends of both lids overlap each other in the vertical direction, the hermeticity becomes higher than before, and the cold insulation and the heat insulation properties are improved. In addition, since the pair of lids are brought close to each other by the relay member being inclined, the turning radius of the lid including the tip overlapping portion can be reduced by the amount of the closeness. Can be made into a compact folded state.

In addition , since the side wall-side stopper surface and the relay-side stopper surface that are in surface contact with each other and position the relay member in an inclined posture are provided, the position of the pair of lid bodies when the fully closed state is established is stable. It is possible to prevent a situation in which the members are too close to each other, and the lid closing operation is facilitated.

Further , the relay member in the inclined posture is prevented from shifting obliquely downward along the side wall-side stopper surface by the shift restricting protrusion, and this also stabilizes the position of the pair of lids.

The perspective view of the assembly state of the folding container which concerns on one Embodiment of this invention Perspective view of the bottom side of the folding container Perspective view in the middle of folding a folding container Perspective view of second side wall Side cross-sectional view of fully closed lid, relay member and second side wall Side sectional view of the fully closed lid and second side wall Perspective view of relay member Perspective view of lid Partially cutaway perspective view of fully closed lid, relay member and second side wall Partially cutaway perspective view of fully closed lid and second side wall Side perspective view of lid, relay member and second side wall in half-open state Side view of folded container in assembled state Side cross-sectional view of lid, relay member and second side wall in fully open state Side view of the folded folding container Perspective view of folding containers stacked in a folded state Perspective view of folded containers stacked in an assembled state Perspective view of folding containers stacked in fully open state

  Hereinafter, an embodiment of the present invention will be described with reference to FIGS. As shown in FIG. 1, the folding container 10 of the present embodiment includes, for example, a base member 11, a first side wall 20, a second side wall 30, a relay member 40, and a lid 50 that are each formed by a foam bead molding method. Of these, the base member 11, the first side wall 20 and the second side wall 30 constitute a container body 10H according to the present invention. In addition, the folding container 10 is used as a cold insulation / heat insulation box.

  The base member 11 has a rectangular planar shape, and a pair of bank portions 12 and 12 project upward from a pair of long side portions of the outer edge. Further, both ends in the longitudinal direction of each bank portion 12 are bent at right angles to the short side of the base member 11 to form corner protruding walls 12T and 12T.

  Hinge shaft receiving portions 17 are formed at positions near both ends in the longitudinal direction of each bank portion 12. As shown in FIG. 3, the hinge shaft receiving portion 17 has a lower end wide in the longitudinal direction of the bank portion 12, and the opening of the hinge shaft receiving portion 17 on the inner surface of the bank portion 12 has an inverted T shape. . Further, an inner surface built-up portion 17 </ b> A is formed on the inner surface of the bank portion 12 so as to surround the opening of the hinge shaft receiving portion 17. Further, the portion corresponding to the vertical side of the inverted T-shaped portion of the hinge shaft receiving portion 17 has a stepped width from the inner surface of the bank portion 12 toward the outer surface side, and the width thereof becomes narrower. The open portion is open to the outer surface of the bank portion 12 (see FIG. 1). The portion corresponding to the inverted T-shaped lateral side of the hinge shaft receiving portion 17 is a cylindrical space at a position away from the inner surface of the bank portion 12, and the opening width is on the inner surface side of the bank portion 12. Narrow in the vertical direction.

  As shown in FIG. 2, four corners on the lower surface of the base member 11 are provided with lower-surface corner protrusions 13 having a square shape in a planar shape. In addition, a pair of lower surface grooves 16, 16 extending over the entire longitudinal direction is provided at the center in the short direction on the lower surface of the base member 11, and a portion left between the lower surface grooves 16, 16 is provided. The lower surface central protrusion 15 is formed. In addition, the both ends of the longitudinal direction of the lower surface center protrusion 15 have comprised T shape. Each lower surface groove 16 is bent in a direction away from the lower surface central protrusion 15 at both ends in the longitudinal direction and extends to the lower surface corner protrusion 13. Furthermore, belt-like lower surface protrusions 14 and 14 extending from a position near one end in the longitudinal direction to a position near the other end are provided at positions near both ends in the short direction on the lower surface of the base member 11. In addition, the both ends of each strip | belt-shaped lower surface protrusion 14 are semicircle. Further, as shown in FIG. 12, the belt-like lower surface protrusion 14 protrudes downward from the lower surface corner protrusion 13.

  As shown in FIG. 1, first side walls 20 and 20 are rotatably connected to a pair of short sides of the outer edge of the base member 11. Hereinafter, unless otherwise specified, the structure will be described with reference to a state in which the first side wall 20 is erected vertically. As shown in FIG. 3, at both ends of the lower end surface of the first side wall 20, a substantially cylindrical hinge shaft portion 21 extending in the lateral direction of the first side wall 20 (FIG. 3 shows one hinge shaft portion 21). Only one is shown), and one end portion of each hinge shaft portion 21 is formed in a conical shape to form a hinge protrusion (not shown) protruding laterally from the first side wall 20. On the other hand, circular grooves 11M that receive the hinge shaft portions 21 described above are formed on the inner bottom surfaces of the bank portions 12 and 12 of the base member 11 at positions closer to both ends in the longitudinal direction. A conical bearing hole (not shown) is formed in the lower end portion of the inner surface built-up portion 17A located on the extension line of 11M. And each hinge protrusion of the 1st side wall 20 is received by the bearing hole, and the 1st side wall 20 is supported by the base member 11 so that rotation is possible.

  As shown in FIG. 12, side locking walls 25, 25 are formed on both sides of the first side wall 20, with the outer surface side recessed into a stepped shape. In addition, the side locking walls 25 project from the lower side to the outside in a stepped manner from the lower side and form side protrusions 25T. Then, the corner protruding walls 12T and 12T of the base member 11 overlap the lower end portion of the side locking wall 25 in the first side wall 20 in the standing posture so that the first side wall 20 does not fall outward. Be regulated.

  As shown in FIG. 3, a pair of upper surface protrusions 27, 27 protrude from the upper surface of the first side wall 20. Each upper surface protrusion 27 is located closer to the inner surface of the first side wall 20 in the upper surface of the first side wall 20 and extends from a position closer to the side on the upper surface of the first side wall 20 to a position closer to the center.

  As shown in FIG. 1, second side walls 30 and 30 are rotatably connected to a pair of long side portions of the outer edge portion of the base member 11, respectively. Hereinafter, unless otherwise specified, the structure will be described with reference to a state in which the second side wall 30 is erected vertically. As shown in FIG. 4, the second side wall 30 is provided with a pair of hinge legs 31, 31 protruding downward from both ends of the lower end surface. Each hinge leg 31 is provided with a hinge bar 32 at the lower end and has an inverted T-shape. The hinge bar 32 has a shape including a pair of flat surfaces 32A and 32A parallel to each other by cutting a part of the cylindrical body flat, and the flat surfaces 32A and 32A are parallel to the inner and outer surfaces of the second side wall 30. It has become. Further, the inverted T-shaped vertical side portion of the hinge leg 31 is narrowed in a stepped manner toward the outer surface side of the second side wall 30. Then, the hinge bar 32 is inserted into the hinge shaft receiving portion 17 from the inner surface side of the base member 11 in a state where the second side wall 30 is tilted, and is accommodated in the cylindrical space described above, and the second side wall 30 is rotated to the base member 11. It is supported movably. Further, as shown in FIG. 1, when the second side wall 30 is in the standing posture, the lower surface abuts on the upper surface of the bank portion 12, and the second side wall 30 is restricted so as not to fall further outside.

  Both end portions in the lateral direction of the second side wall 30 are bent at right angles to the first side wall 20 side to form side orthogonal walls 33 and 33. Then, as shown in FIG. 12, the side orthogonal wall 33 overlaps the side locking walls 25, 25 of the first side wall 20 in the standing posture from the outside, and the corner protruding wall 12T and the side orthogonal wall 33 cooperate with each other. It works to restrict the first side wall 20 from falling outward. Further, as shown in FIG. 3, a longitudinal groove 33 </ b> M extending from the upper end portion to the middle position in the vertical direction is formed on the inner surface of the side orthogonal wall 33. On the other hand, on the side protrusion 25T of the side locking wall 25 in the first side wall 20, a protrusion 25M extending in the vertical direction is formed. And the protrusion 25M fits into the vertical groove 33M, and it is controlled that the 2nd side wall 30 falls outside.

  A guide groove 25G is formed on the inner surface of the second side wall 30 and the inner surface of the bank portion 12 along the turning locus of the side protrusion 25T on the first side wall 20, and the side protrusion 25T is received in the guide groove 25G. In this state, the first side wall 20 is rotated.

  As shown in FIG. 4, a pair of connecting recesses 34, 34 are formed at the upper end of the second side wall 30 by cutting out two lateral portions in a stepped shape. Conical bearing holes 34 </ b> A and 34 </ b> A are formed coaxially on the opposing surface in the coupling recess 34. The bottom surface of the connecting recess 34 is a concave arcuate surface 34B concentric with the bearing hole 34A. The arcuate surface 34B has engagement recesses 35, 35 formed at two locations in the central axis direction. Yes.

  As shown in FIG. 5, the engagement recess 35 is formed with a side wall-side stopper surface 35 </ b> A that is inclined so as to descend from the outer surface of the second side wall 30 to a position closer to the inner surface. Further, in the engaging recess 35, the inner surface side of the second side wall 30 from the side wall side stopper surface 35A is a shift restricting projection 35B protruding from the side wall side stopper surface 35A, and the side wall of the shift restricting projection 35B is the side wall. The side stopper surface 35 </ b> A side is inclined obliquely upward toward the inner surface side of the second side wall 30.

  As shown in FIG. 4, the upper surface of the second side wall 30 other than the coupling recess 34 is a convex arcuate surface 36A concentric with the bearing holes 34A, 34A, and as shown in FIG. From the position shifted from the uppermost point of the arc surface 36A toward the inner surface side of the second side wall 30 to the inner surface of the second side wall 30 is a horizontal lid locking surface 36B. Further, as shown in FIG. 4, the lid locking surface 36 </ b> B extends to the upper portion of the side orthogonal wall 33 at both lateral ends of the second side wall 30.

  As shown in FIG. 1, the relay member 40 is assembled in the connection recess 34. As shown in FIG. 7, the relay member 40 has a structure in which a pair of cylindrical bodies 40 </ b> A and 40 </ b> B extending in the lateral direction of the second side wall 30 are arranged side by side in a vertically adjacent state. Hereinafter, unless otherwise specified, the structure of the relay member 40 will be described with reference to a state in which the cylindrical body 40B is positioned right above the one cylindrical body 40A. Conical first and second hinge shaft portions 41 and 42 are formed on both end surfaces of the relay member 40 on the same axis of the cylindrical bodies 40A and 40B, respectively. The lower first hinge shaft portions 41 and 41 (corresponding to the “side wall hinge portion” of the present invention) are received in the bearing holes 34A and 34A (see FIG. 4) of the coupling recess 34, thereby the relay member. 40 is rotatably supported by the second side wall 30.

  On the outer surface side of the relay member 40, an intermediate groove 40M sandwiched between the outer peripheral surfaces of the columnar bodies 40A and 40B is provided, and on the inner surface side of the relay member 40, the inner side continuous with both outer peripheral surfaces of the columnar bodies 40A and 40B. A flat surface 40N is provided. In addition, a pair of engaging protrusions 43 and 43 are provided at two locations in the axial direction of the relay member 40 so as to correspond to the engaging recesses 35 and 35. The engagement protrusion 43 extends a part of the inner flat surface 40N to the lowest point of the lower cylindrical body 40A and extends horizontally from the extended surface 43A to the extended surface 43A from the lowest point of the lower cylindrical body 40A. The relay side stopper surface 43 </ b> B extends to the shape. As shown in FIG. 5, when the relay member 40 rotates inward (that is, in the clockwise direction of FIG. 5) with respect to the second side wall 30, the relay side stopper surface 43 </ b> B becomes the side wall side stopper of the second side wall 30. The relay member 40 is positioned in the inclined posture according to the present invention in contact with the surface 35A.

  As shown in FIG. 1, a lid 50 is rotatably connected to the upper end of each second side wall 30 via a pair of relay members 40, 40. Hereinafter, the structure of the lid 50 will be described with reference to the state where the lid 50 is horizontal unless otherwise specified. As shown in FIG. 8, a pair of connecting recesses 51, 51 are formed in the base end portion of the lid body 50, and a pair of bearing holes 51 </ b> A, 51 </ b> A are coaxial on the opposing surfaces in each connecting recess 51. Formed on top. Then, the upper end portion of the relay member 40 (see FIG. 7) is received in the connection recess 51, and the second hinge shaft portions 42 and 42 (corresponding to the “lid body side hinge portion” of the present invention) are formed in the bearing holes 51A and 51A. As a result, the lid body 50 is rotatably connected to the upper end portion of the relay member 40. Further, the bottom surface of the connecting recess 51 is a concave arcuate surface 51B concentric with the bearing hole 51A, and portions other than the connecting recesses 51 and 51 on the base end surface of the lid 50 are formed into a convex arcuate surface. It has become.

  A lid outer surface groove 53 having the same planar shape as the belt-like lower surface protrusion 14 (see FIG. 2) of the base member 11 is formed at a position near the base end on the upper surface of the lid 50. As shown in FIG. 3, a lid inner surface groove 54 having the same shape as the lid outer surface groove 53 is formed at a position closer to the tip of the lower surface of the lid body 50. Further, a pair of fitting grooves 55 and 55 are formed on both side portions of the lower surface of the lid 50. The fitting groove 55 extends from a position near the base end of the lid body 50 to a position near the front end. Then, the upper surface protrusion 27 of the first side wall 20 is fitted in each fitting groove 55.

  A lid base end protrusion 56 protrudes from a position near the base end of the lower surface of the lid 50. The lid base end protrusion 56 extends from a position near one end in the lateral direction of the lid 50 to a position near the other end. Further, as shown in FIG. 5, a positioning flat surface 56 </ b> A continuous from the circular arc surface 51 </ b> B of the connecting recess 51 is formed in a portion of the lid base end protrusion 56 that faces the connecting recess 51. Furthermore, as shown in FIG. 6, a vertical abutment surface 56 </ b> B that stands vertically from the lower surface (inner surface) of the lid 50 is formed in a portion of the lid base end protrusion 56 that does not face the connection recess 51. The vertical contact surface 56B and the distal end surface of the lid base end protrusion 56 are chamfered to form an inclined surface.

  When the relay member 40 is in the above-described inclined posture at the upper end portion of the second side wall 30 in the standing posture, the positioning flat surface 56A of the lid base end protrusion 56 is flat on the inner side of the relay member 40 as shown in FIG. The surface abuts on the surface 40N. At this time, as shown in FIG. 6, the lower surface of the lid 50 abuts against the lid locking surface 36B of the second side wall 30, and the inner surface and the lid of the second side wall 30 depending from the lid locking surface 36B. The vertical contact surface 56 </ b> B of the base end protrusion 56 contacts.

  As shown in FIG. 8, the front end surface of the lid 50 has a waveform shape. Specifically, the front end surface of the lid body 50 forms a convex curved surface 60B in which half of the lateral direction of the lid body 50 bulges forward, and the other half is a base end symmetrical with respect to the convex curved surface 60B. The concave curved surface 60A is curved toward the side. The concave curved surface 60A and the convex curved surface 60B are combined to form a waveform for one cycle. Further, from the lower half of the concave curved surface 60A in the plate thickness direction of the lid 50, a lid tip protruding piece 59 corresponding to the “tip overlapping portion” of the present invention protrudes forward.

  The distal end surface of the lid distal end protruding piece 59 extends linearly in the lateral direction of the lid body 50. Further, both side surfaces of the lid tip projecting piece 59 extend in the rotational radius direction of the lid body 50, and one of the side surfaces thereof is located at the lateral center of the lid body 50, and the other side surface thereof is the lid body 50. It is arranged near the outer surface. Further, the upper surface of the lid tip protrusion piece 59 is a concave surface 59A, and the concave surface 59A becomes deeper toward the center in the left-right direction of the lid tip protrusion piece 59 as shown in FIG. It curves so that it may become deep as it goes from the base end side of 59 to the front end side.

  The lower half of the lid 50 in the thickness direction of the lid 50 is recessed in a stepped manner on the convex curved surface 60B side of the tip of the lid 50, and the lid tip protrusion 59 of the counterpart lid 50 is received. A projecting piece receiving portion 61 is formed, and a portion left above the projecting piece receiving portion 61 is a lid tip cover piece 58 corresponding to the “tip overlapping portion” of the present invention. As shown in FIG. 10, the front end corner portion on the lower surface side of the cover front end cover piece 58 is chamfered relatively larger than other portions to form an R surface 58 </ b> A. Then, as shown in FIG. 11, when the pair of lids 50, 50 are closed symmetrically, the lid tip cover piece 58 of one lid 50 becomes a lid tip protrusion 59 of the other lid 50. It will be in the state which was piled up from the upper part.

  The description regarding the structure of the folding container 10 of this embodiment is above. Next, the effect of this folding container 10 is demonstrated. As shown in FIG. 17, the lid 50 can be opened in the folded container 10 in an assembled state until the lid 50 is fully opened so as to overlap the outer surface of the second side wall 30. Thereby, it is possible to easily take in and out the luggage from the upper surface opening 10K of the container main body 10H.

  In addition, when the lid 50 is fully opened, the relay member 40 is in an overturned posture protruding outward from the second side wall 30. Specifically, as shown in FIG. 13, an acute corner portion of the second side wall 30 where the outer surface and the side wall-side stopper surface 35 </ b> A of the engagement recess 35 intersect with the back surface of the intermediate groove 40 </ b> M of the relay member 40. Then, the relay member 40 is positioned in the overturned posture, and the lower end portion of the lid 50 is positioned below the lower end portion of the second side wall 30 and above the lower surface of the base member 11 as shown in FIG. Become. Moreover, the folding containers 10 and 10 with the lid 50 fully opened can be stacked. In that case, the belt-like lower surface protrusion 14 (see FIG. 2) of the upper folding container 10 is fitted into the upper surface opening 10K of the lower folding container 10, and the lateral displacement of the upper and lower folding containers 10, 10 is restricted. The

  The folding container 10 can be folded after the lids 50 and 50 are fully opened. Specifically, as shown in FIG. 3, first, the first side walls 20, 20 are folded inward and folded on the base member 11. Then, these 1st side walls 20 and 20 are settled between the bank parts 12 and 12 in the base member 11, without overlapping each other. Next, both the second side walls 30, 30 are folded inward and folded so as to overlap the first side walls 20, 20. Then, as shown in FIG. 14, the second side walls 30, 30 also fit between the bank parts 12, 12 of the base member 11 without overlapping each other, and the outer surfaces of the second side walls 30, 30 are the bank parts 12, 12. It will be flush with the top surface of The folding container 10 is in a compact state in which the leading ends of the lids 50 and 50 are overlapped with the top surfaces of the bank portions 12 and 12 and the leading ends of the lids 50 and 50 are accommodated inside the outer surface of the base member 11. The whole is folded.

  As shown in FIG. 15, the folded containers 10 and 10 in a folded state can also be stacked. In that case, the belt-like lower surface protrusion 14 (see FIG. 2) of the upper folding container 10 fits into the lid inner surface groove 54 of the lid 50 in the lower folding container 10 and from the lower folding container 10. The lid base end protrusion 56 (see FIG. 14) protruding upward is received in the lower surface groove 16 of the upper folding container 10, thereby restricting the lateral displacement of the upper and lower folding containers 10, 10.

  The folding container 10 can be brought into an assembled state in which the lids 50 and 50 are fully opened by a procedure reverse to the operation of folding the folding container 10 described above. When the pair of lids 50 and 50 are closed symmetrically from that state, the relay member 40 is inclined inward from the middle as shown in FIG. 11, and the lid tip cover piece 58 of one lid 50 is the other. It will be in the state where it overlapped with the lid tip projection piece 59 of the lid 50 from above. Further, when the lids 50 and 50 are closed, the relay member 40 is inclined deeper inward and the lids 50 and 50 are brought closer to each other. As shown in FIG. 5, the relay member 40 is positioned in the inclined posture according to the present invention by the surface contact between the relay side stopper surface 43 </ b> B and the side wall side stopper surface 35 </ b> A of the second side wall 30.

  When the lid 50 is further tilted, the upper surface protrusion 27 of the first side wall 20 is fitted into the fitting groove 55, and eventually both sides of the lid 50 are overlapped with the upper surface of the first side wall 20 to be fully closed. At this time, at the front end portions of the lids 50 and 50, the lid front end cover piece 58 is overlapped with the entire lid front end protruding piece 59 from above. Further, as shown in FIG. 5, the inner flat surface 40N of the relay member 40 comes into surface contact with the positioning flat surface 56A of the lid base end protrusion 56 in the lid body 50, whereby the inclination of the relay member 40 is inclined. Posture is stable. Further, since the displacement regulating projection 35B faces the relay member 40 in the inclined posture from the inside of the second side wall 30, the relay member 40 is prevented from being displaced obliquely downward along the side wall-side stopper surface 35A. .

  As shown in FIG. 16, the folded containers 10 and 10 in the assembled state in which the lid 50 is fully closed can also be stacked. In this case, the belt-like lower surface protrusion 14 (see FIG. 2) of the upper folding container 10 is fitted into the lid outer surface groove 53 of the lid 50 in the lower folding container 10, and the upper and lower folding containers 10, 10 are engaged. Is controlled.

Thus, in the folding container 10 of the present embodiment, the upper surface opening 10K is fully closed in a state where the lid tip cover pieces 58 and the lid tip protrusions 59 of the lid bodies 50 and 50 overlap each other in the vertical direction. The airtightness becomes higher and the cold and heat insulation properties are improved. Further, since the relay member 40 that connects the lid 50 and the second side wall 30 is in an inclined posture, the pair of lids 50 and 50 are brought close to each other and are fully closed. Thus, the radius of rotation of the lid bodies 50 and 50 including the lid tip cover piece 58 and the lid tip projection piece 59 can be reduced, and a compact folded state can be achieved. Further, by providing the relay side stopper surface 43B and the side wall stopper surface 35 A for positioning the relay member 40 in the inclined position, the position of the lid 50, 50 of the pair when the fully closed state is stabilized Further, it is possible to prevent the lids 50 and 50 from being excessively close to each other, thereby facilitating the closing operation of the lids 50 and 50.

[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 folding container 10 of the above-described embodiment, the lids 50 and 50 are configured to fit inside the outer surface of the base member 11 in the folded state, but the distal ends of the lids 50 and 50 are the base member 11. You may protrude from the outer surface of the.

(2) In the folding container 10 of the above embodiment, the relay member 40 is positioned in an inclined posture by bringing the relay side stopper surface 43B on the lower end side of the relay member 40 into surface contact with the side wall stopper surface 35A. For example, a protrusion that contacts the inner flat surface 40N of the relay member 40 when the relay member 40 is in an inclined posture may be provided on the second side wall as the “rotation stopper” according to the present invention.

DESCRIPTION OF SYMBOLS 10 Container 10H Container main body 10K Upper surface opening 11 Base member 20 1st side wall 30 2nd side wall 35A Side wall side stopper surface 35B Control protrusion 40 Relay member 41 1st hinge axial part (side wall side hinge part)
42 Second hinge shaft part (lid side hinge part)
43B Relay-side stopper surface 50 Lid 58 Lid tip cover piece (tip overlap)
59 Lid tip protrusion (overlapping tip)

Claims (1)

A folding container made of foam resin,
A side wall is rotatably connected to each outer edge portion of the base member having a quadrangular shape, and an assembled state in which the side walls stand up from the base member and a pair of first side walls facing each other among the side walls are provided. A container body that can be folded into a folded state in which the remaining pair of second side walls are folded onto the pair of first side walls after being folded on the base member;
A pair of lids for closing half of the upper surface opening of the container body in the assembled state in the opposing direction of the pair of second side walls;
A tip overlap portion formed at the tip of the pair of lids and overlapping the top and bottom in a state where the pair of lids fully closes the upper surface opening;
A side wall-side hinge portion rotatably connected to the upper end portion of the second side wall, and a relay member provided with a lid-side hinge portion rotatably connected to the lid body provided in parallel,
In the folded state, the relay member protrudes outward from the second side wall, and the lid body is overlaid on the outer surface of the second side wall, while the relay member is in the assembled state. It becomes an inclined posture inclined toward the upper surface opening side, and the pair of lids are configured to fully close the upper surface opening ,
A flat side wall-side stopper surface that is inclined so that a part of the upper end surface of the second side wall is lowered to the upper surface opening side;
A flat relay side stopper surface formed on the relay member, the relay member being in surface contact with the side wall side stopper surface in the inclined posture;
It is formed on the upper end surface of the second side wall, protrudes upward from a position closer to the inner surface of the second side wall than the side wall side stopper surface, and the relay member in the inclined posture is inclined downward along the side wall side stopper surface. A folding container comprising a displacement regulating protrusion for regulating displacement.

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