US20030000950A1 - Foldable transportation container - Google Patents

Foldable transportation container Download PDF

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Publication number
US20030000950A1
US20030000950A1 US10/151,350 US15135002A US2003000950A1 US 20030000950 A1 US20030000950 A1 US 20030000950A1 US 15135002 A US15135002 A US 15135002A US 2003000950 A1 US2003000950 A1 US 2003000950A1
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US
United States
Prior art keywords
engagement
side walls
container body
container according
transportation container
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US10/151,350
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English (en)
Inventor
Tetsuya Murakami
Hidetoshi Yamaguchi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Gifu Plastic Industry Co Ltd
Original Assignee
Gifu Plastic Industry Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Gifu Plastic Industry Co Ltd filed Critical Gifu Plastic Industry Co Ltd
Assigned to GIFU PLASTIC KOGYO KABUSHIKI GAISHA reassignment GIFU PLASTIC KOGYO KABUSHIKI GAISHA ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: MURAKAMI, TETSUYA, YAMAGUCHI, HIDETOSHI
Publication of US20030000950A1 publication Critical patent/US20030000950A1/en
Priority to US11/006,178 priority Critical patent/US7195128B2/en
Abandoned legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D11/00—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, components made wholly or mainly of plastics material
    • B65D11/18—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, components made wholly or mainly of plastics material collapsible, i.e. with walls hinged together or detachably connected
    • B65D11/1833—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, components made wholly or mainly of plastics material collapsible, i.e. with walls hinged together or detachably connected whereby all side walls are hingedly connected to the base panel

Definitions

  • the present invention relates to a foldable transportation container that is compactly folded to be stored and carried when not in use, and more specifically to a foldable transportation container that is easy to fold.
  • a foldable container disclosed in Japanese Laid-Open Utility Model Publication No. Sho 63-117725 is known.
  • This foldable container has a structure in which wall boards constituting the respective side walls are attached directly to the four sides of a rectangular bottom board or to bases formed there, so that the side walls are inwardly foldable with hinge structures at the lower sides of the side walls. Further, in this container, in adjacent sides of the wall boards adjacent to each other, constituting corners of the side wall, to any one of the sides, stop members stopped to the other side are provided to mutually limit outward openings of both of those wall boards.
  • engagement members engaged with biasing forces with engagement holes formed in the other side so as to be detachable are provided to mutually limit inward rotations of both of those wall boards. Then, lateral slide-operation of both of the engagement members is performed against the biasing forces to release the engagement with the engagement holes, the side walls in which the engagement members are provided can be inwardly rotated and thereby the container can easily be folded.
  • An object of the present invention is to provide a foldable transportation container constructed so that the folding operation can be performed still more easily.
  • the container comprises a container body having a rectangular bottom wall a pair of first side walls, and a pair of second side walls.
  • the first and second side walls are provided along the periphery of the bottom wall.
  • the container also includes rotating means, engagement members, and engagement portions.
  • the rotating means is provided on the lower ends of the side walls.
  • the rotating means permits the side walls to be folded inward of the container body.
  • the first side walls are folded onto the upper face of the bottom wall and then the second side walls are folded onto the folded first side walls.
  • Each engagement member is provided on the outer surface of one of the first side walls.
  • An operation portion is provided on the substantial center of each the engagement member.
  • a projection is provided at each end of each engagement member.
  • Engagement portions are provided on both ends of the second side walls. The engagement portions are engaged with the engagement projections to limit rotation of the first side walls inward of the container body.
  • the operation portions of the engagement members are moved up or down to release engagement between the engagement projections and the engagement portions.
  • FIGS. 1 ( a ) and ( b ) are partially enlarged side views showing part of the container body of a foldable transportation container of an embodiment of the present invention
  • FIG. 1( c ) is a cross-sectional view taken along the line 1 c - 1 c of FIG. 1( a );
  • FIG. 2( a ) is a front view showing the container body of the foldable transportation container
  • FIG. 2( b ) is a front sectional view of the foldable transportation container
  • FIG. 3 is a plan view showing the container body in which a side wall is folded
  • FIG. 4 is a side view showing the container body a part of which is cut away;
  • FIG. 5 is a side view showing the container body in a folded state
  • FIG. 6( a ) is a side view of a long side wall
  • FIG. 6( b ) is a cross-sectional view of the long side wall
  • FIG. 6( c ) is a cross-sectional view taken along the line 6 c - 6 c of FIG. 6( a );
  • FIG. 7( a ) is a front view showing part of a short side wall
  • FIG. 7( b ) is a side view of the short side wall
  • FIG. 8( a ) is a front view showing part of an engagement member
  • FIG. 8( b ) is a rear view of the engagement member
  • FIG. 9 is a plan sectional view showing the container body to which an engagement member is formed to be attached;
  • FIGS. 10 ( a ) to 10 ( c ) are front sectional views showing an operation when the container body of the embodiment is assembled or folded;
  • FIGS. 11 ( a ) and 11 ( b ) are partially enlarged side views showing part of the container body of a foldable transportation container according to another embodiment
  • FIG. 12( a ) is a partially enlarged side view showing part of the container body of the foldable transportation container according to another embodiment
  • FIG. 12( b ) is a cross-sectional view taken along the line 12 b - 12 b of FIG. 12( a );
  • FIGS. 13 ( a ) and 13 ( b ) are partially enlarged side views showing part of the container body of a foldable transportation container according to another embodiment
  • FIGS. 14 ( a ) and 14 ( b ) are partially enlarged side views showing part of the container body of a foldable transportation container according to another embodiment
  • FIG. 15( a ) is a front view showing an operation member constituting an engagement member in another embodiment
  • FIG. 15( b ) is a rear view of the operation member of FIG. 15( a );
  • FIG. 16( a ) is a front view showing one connecting member constituting an engagement member in another embodiment
  • FIG. 16( b ) is a bottom view of the connecting member of FIG. 16( a );
  • FIG. 17 is a partially enlarged sectional view showing part of an engagement member according to another embodiment
  • FIG. 18 is a partially enlarged side view showing part of a container body according to another embodiment.
  • FIGS. 19 ( a ) and 19 ( b ) are partially enlarged side views showing part of the container body of a foldable transportation container according to another embodiment.
  • a container body 21 constituting a foldable transportation container is made of a synthetic resin (polypropylene) into a box with a rectangular bottom.
  • This container body 21 comprises a rectangular bottom wall 22 , a pair of short side walls 23 formed to stand along a pair of opposing sides of the bottom wall 22 , and a pair of long side walls 24 formed to stand along the other opposing sides of the bottom wall 22 .
  • an engagement member 25 made of a synthetic resin (polypropylene) into a substantially rectangular shape is formed to be attached to the upper end of the outside face of the short side wall 23 .
  • the container body 21 of this foldable transportation container is constructed so as to be foldable by folding a pair of long side walls 24 onto the upper face of the short side wall 23 .
  • supporting protrusions 31 a formed into poles having a rectangular cross-section are formed to connect pairs of the corners of the container body 21 , and support the short side walls 23 by its upper end face.
  • supporting protrusions 31 b formed into poles having a substantially rectangular cross-section are formed to connect pairs of the corners of the container body 21 , and support the long side walls 24 by its upper end face.
  • the height of the supporting protrusions 31 a is formed so as to be substantially equal to the thickness of the short side walls 23 .
  • the supporting protrusions 31 b are formed such that their height is substantially equal to the length that the thickness of the short side walls 23 and the thickness of the long side walls 24 are added.
  • each supporting protrusion 31 a or 31 b bearing portions 32 constituting rotating means are provided at a predetermined interval, and fit a rotational axis 33 formed at the inner position of the lower end of the short side walls 23 and the long side walls 24 and constituting rotating means.
  • the lower end faces of the short side walls 23 and long side walls 24 and the upper end faces of the supporting protrusions 31 a and 31 b each are constructed by a flat face extending horizontally, and when the container body 21 is assembled, the short side walls 23 and the long side walls 24 are easily formed to stand in a stable state on the supporting protrusions 31 a and 31 b.
  • a pair of left and right receiving recesses 35 is provided in the outer sides of the supporting protrusion 31 a.
  • the recesses 35 are substantially rectangular.
  • substantially rectangular handle holes 36 a and 36 b are formed, and it is constructed so as to easily hold the container body 21 .
  • substantially rectangular engagement recesses 41 are provided in the upper positions in the outer side.
  • a lower portion limiting protrusion 42 a, a center portion limiting protrusion 42 b, and an upper portion limiting protrusion 42 c constituting limiting means any of which is formed into a side face substantially U-shape are formed to protrude so as to extend outward of the short side wall 23 .
  • a first rectangular hole 43 is formed to extend laterally.
  • a second long hole 44 is provided by forming a proximal end of a side wall rib formed to protrude along the periphery of the rectangular engagement recess 41 .
  • each pair of left and right side wall protrusions 45 constituting biasing means are formed to protrude outward. Both side wall protrusions 45 expand toward the upper side in FIG. 7( a ). As shown in FIG. 9, on the outside faces of the short side walls positioning in both side directions of each side wall protrusion 45 , each pair of sliding engagement projections 46 formed into a plan cross section with a substantially L-shape are formed to protrude outward.
  • a long hole 46 a constructed so as to be able to form the sliding engagement projection 46 by vertical drawing only by an upper mold and a lower mold is formed to penetrate.
  • fold-back portions 50 formed into rectangular plates are formed to protrude so as to extend in parallel with the short side wall 23 in both ends of the long side wall 24 .
  • a limiting board 51 formed into a rectangular plate is formed to protrude so as to extend in parallel with the short side wall 23 , and when the container body 21 is assembled, it is constructed so as to be contained in the engagement recess 41 of the short side wall 23 .
  • This limiting board 51 is formed into a board shape which is thinner than the fold-back portion 50 , and when the container body 21 is assembled, it is constructed so as to prevent the short side wall 23 from rotating outside the container body 21 .
  • the end face of the fold-back portion 50 on the side where the limiting board 51 is provided is constructed so as to be bonded to the outer edge of the engagement recess 41 of the short side wall 23 when the container body 21 is assembled.
  • a lower portion limiting hole 52 a, a center portion limiting hole 52 b, and an upper portion limiting hole 52 c constituting limiting means any of which is formed into a rectangular hole.
  • an engagement frame portion 53 constituting limiting means formed into a rectangular frame shape along the periphery of the center portion limiting hole 52 b is formed to protrude so as to extend into the container body 21 .
  • these limiting holes 52 a, 52 b, and 52 c are, constructed so that the limiting protrusions 42 a, 42 b, and 42 c of the short side wall 23 are inserted to engage, and also constructed so as to stop the long side wall 24 to rotate outside the container body 21 . Further, as shown in FIG. 5, when the container body 21 is folded, these limiting board 51 and engagement frame portion 53 are to be contained in the receiving recess 35 of the supporting protrusion 31 a.
  • the proximal end of the limiting board 51 is provided with engagement recesses 54 by forming to recess both ends on the inside faces of the long side wall 24 into a substantially rectangular shape.
  • an engagement portion 55 is formed to hang so as to extend along the inside face of the fold-back portion 50 and extend in parallel with the limiting board 51 .
  • a slanting face 55 a formed so as to slant outside the container body 21 nearer to the distal end is provided at the distal end of the container body 21 on the inner side of this engagement portion 55 .
  • the engagement member 25 made of a synthetic resin into the substantially rectangular board is formed to be attached so as to be slidable with a predetermined width vertically along the outside face of the upper end of the short side wall 23 .
  • engagement projections 61 formed into a pole having a rectangular cross-section are formed to protrude so as to extend outward.
  • a second slanting face 61 a formed so as to slant inside the container body 21 nearer to the upper end is provided.
  • An operation rib 62 as an operation portion extending laterally is formed to protrude outward on the lower end center of the engagement member 25 .
  • a protruding portion 63 is provided by protruding the wall face constituting the engagement member 25 toward an outer side direction into a rectangular box shape.
  • the back face of this protruding portion 63 is a recessed portion 64 formed to be recessed into a rectangular shape. Note that this recessed portion 64 is opened on the back face side and the lower face side.
  • a pair of left and right sliding engagement holes 65 is formed to penetrate into a long hole shape extending vertically.
  • biasing projection 66 constituting biasing means formed into a side face having a shape of downward arrow is provided on the back face side of the engagement member 25 .
  • This biasing projection 66 is made up of a biasing protrusion 66 a formed into a pole having a rectangular cross-section, and a pair of left and right biasing boards 66 b formed to protrude so as to extend upward obliquely from the lower ends of both side faces of the biasing protrusion 66 a.
  • both the biasing boards 66 b are formed to protrude.
  • these biasing boards 66 b are formed so as to extend obliquely upward at an angle of nearly 45° with respect to a longitudinal direction (a vertical direction), as shown in FIG. 1( b ), it is constructed to be predetermined angle elastically deformable with respect to the biasing protrusion 66 a.
  • the engagement member 25 constructed as described above is assembled at a predetermined position of the upper end of the outside face on the short side wall 23 to be used.
  • this engagement member 25 first, as shown in FIG. 1( a ), after one engagement projection 61 is inserted in the second long hole 44 and the first long hole 43 formed in one end of the short side wall 23 , the other engagement projection 61 is inserted in the second long hole 44 and the first long hole 43 formed in the other end of the short side wall 23 .
  • the engagement member 25 is pressed toward the outside face of the short side wall 23 in a state that each sliding engagement hole 65 of the engagement member 25 is made to correspond to the sliding engagement projection 46 of the short side wall 23 .
  • each sliding engagement projection 46 is forcedly fitted on the peripheral portion of the sliding engagement hole 65 , and the engagement member 25 is attached to the outside face of the short side wall 23 .
  • the engagement member can be slid vertically with a predetermined width in a state that each pair of sliding engagement projections 46 formed on the outside face of the short side wall 23 is engaged with the peripheral portions of the sliding engagement holes 65 . Further, by bringing each pair of biasing boards 66 b in contact with the upper end of the side wall protrusion 45 of the short side wall 23 , it is always biased upward. Besides, in case of pressing downward the engagement member 25 to be slid, as shown in FIG. 1( b ), both the biasing boards 66 b are constructed so as to be elastically deformed with sliding on the upper end of the side wall protrusion 45 . Further, as shown in FIG.
  • the distal end of the engagement projection 61 is disposed at the middle position between the inside face of the long side wall 24 and the outer edge of the engagement recess 41 , and in addition to the fact that it is constructed so as not to come into contact with the inside face of the supporting protrusion 31 b in the container body 21 in a folded state, it is constructed so as not to come into contact with the inside face of the long side wall 24 in the course of assembling.
  • each limiting protrusion 42 a, 42 b, or 42 c of the engagement recess 41 is in a state of being inserted to engage in the limiting hole 52 a, 52 b, or 52 c at the lower portion.
  • the engagement projections 61 of both ends of the engagement member 25 are in a state of being inserted in the second long hole 44 and the first long hole 43 of the short side wall 23 in the order from the proximal end side.
  • the distal end of the engagement projection 61 is inserted in the engagement recess 54 of the long side wall 24 , and further it is in a state of being engaged with the engagement portion 55 .
  • the engagement member 25 is not made to be moved down more than a predetermined width in such a manner that the lower end face of the operation rib 62 is brought into contact with the upper end of the outside face of the handle hole 36 a.
  • the container body 21 is compactly folded into a small flat board shape.
  • the limiting boards 51 formed to protrude on both ends of the long side wall 24 are received in the receiving recess 35 of the supporting protrusion 31 a, and the upper end face of the long side wall 24 in a folded state is disposed at a low position.
  • the container body 21 of this foldable transportation container can be vertically piled in a folded state.
  • the left and right long side walls 24 adjacent to the short side wall 23 are in a state of standing in a stable state on the supporting protrusions 31 b, the rotational direction of the short side wall 23 is determined, and the relative positional relation between the short side wall 23 and both long side walls 24 is fixed.
  • the limiting protrusion 42 b at the center portion is inserted to engage in the engagement frame portion 53 , and the distal ends of the limiting protrusions 42 a at the lower portion of the short side wall 23 are engaged with the limiting holes 52 a at the lower portion formed in the limiting boards 51 of two adjacent long side walls 24 .
  • the distal ends of the upper portion limiting protrusions 42 c of the short side wall 23 are engaged with the upper portion limiting holes 52 c of the limiting boards 51 of two adjacent long side walls 24 , and the positional relation between the short side wall 23 and both long side walls 24 is fixed still more strongly. That is, the rotations outward and inner side directions of both long side walls 24 in accordance with the rotation of the short side wall 23 is in a state of being securely restricted.
  • the engagement projection 61 of the engagement member 25 is moved up in accordance with the biasing force of the biasing means at the same time with the completion of the contact state with the engagement portion 55 , after its second slanting face 61 a is brought into contact with the engagement portion 55 of the long side wall 24 and after once being moved down against the biasing means while sliding on the slanting face 55 a.
  • the distal end of the engagement projection 61 is inserted in the engagement recess 54 and in a state of being engaged with the engagement portion 55 , and the short side wall 23 is prevented from rotating inside the container body 21 .
  • the short side wall 23 in this assembled state is limited to rotate in either direction of inward or outward directions of the container body 21 , and fixed to vertically stand on the upper end face of the supporting protrusion 31 a.
  • This foldable transportation container is conveyed by holding the handle hole 36 a or 36 b formed in the center portion of a pair of short side walls 23 or long side wall 24 , with both hands.
  • this foldable transportation container can be vertically piled in an assembled state, and the container body 21 in the above folded state can also be piled on or under the container body 21 in the assembled state.
  • the foldable transportation container of the above embodiment comprises the bottom wall 22 formed into a rectangular board, a pair of short side walls 23 formed to stand along one opposing sides of the bottom wall 22 , and a pair of long side walls 24 formed to stand along the opposing sides of the bottom wall 22 . Further, on the lower end of each of the side walls 23 and 24 , the bearing portion 32 and the rotational axis 33 for folding each side wall 23 or 24 inside the container body 21 are provided, and after the short side walls 23 are folded onto the upper face of the bottom wall 22 , by folding the long side walls 24 onto the upper face of the short side walls 23 , the container body 21 is constructed to be foldable.
  • the operation rib 62 is provided on the center portion and the engagement member 25 on both ends of which the engagement projections 61 are formed to stand is formed.
  • the limiting boards 51 for limiting the outward rotations of the short side walls 23 are formed to stand, and further the engagement portions 55 for engaging with the engagement projections 61 to limit the inward rotations of the short side walls 23 are provided.
  • the limiting holes 52 a, 52 b, and 52 c and the limiting protrusions 42 a, 42 b, and 42 c for limiting the outward rotations of the long side walls 24 are provided in the bonding portions between the limiting boards 51 and both ends of the short side walls 23 . And, by moving down the operation rib 62 of the engagement member 25 , it is constructed so as to release an engagement state between the engagement projection 61 and the engagement portion 55 .
  • an engagement state between the engagement projection 61 and the engagement portion 55 can be released by one touch by pressing downward the operation rib 62 of the engagement member 25 .
  • the container body 21 in an assembled state can be folded very easily.
  • one short side wall 23 can be folded onto the upper face of the bottom wall 22 by one touch with one hand, in comparison with the conventional foldable container having a construction in which one short side wall is folded with both hands, the folding operation can be performed still more easily.
  • the assembling operation can also be performed very easily.
  • the operation rib 62 of the engagement member 25 is formed at a position close to the handle hole 36 a, even in a state that both handle holes 36 a of the container body 21 in an assembled state are held with both hands, the operation rib 62 is operated to be pressed downward using the thumb that can freely be moved in that state. Further, since the operation rib 62 is constructed so as to be pressed downward, it is possible to very effectively apply the pressing force by the thumb to the operation rib 62 in that state. It should be noted that in this folding method, even in case of operating to press upward the operation rib 62 with the thumb, although it is almost similarly effective, for example, in case of operating to press laterally, the pressing force can not so effectively be applied.
  • the assembling operation of the container body 21 can be performed very easily by providing the side wall protrusion 45 and the biasing projection 66 biasing the engagement projection 61 in a predetermined direction. That is, by this construction, after a pair of long side walls 24 is rotated around the rotational axis 33 to stand, it is possible to automatically engage the engagement projection 61 and the engagement portion 55 by similarly rotating a pair of short side walls 23 to stand. Further, by virtue of the side wall protrusion 45 and the biasing projection 66 , it is also possible to easily maintain an assembled state of the container body 21 , and ease to use when the container body 21 is used can sufficiently be obtained.
  • the shape of the container body 21 is constructed to be maintained in a state as it is.
  • the engagement projection 61 can be engaged easily and smoothly with the engagement portion 55 by providing the second slanting face 61 a on the outside of the engagement projection 61 (on the outside face side of the container body 21 ). Therefore, the assembling operation of the container body 21 can be performed easily and rapidly. Further, in the contact portion, the assembling operation of the container body 21 can be performed further easily and rapidly by providing the slanting face 55 a on the inside of the engagement portion 55 (on the inside face side of the container body 21 ).
  • a side wall protrusion 71 formed into a side face with a lateral C-shape is formed to protrude on the outside face of the short side wall 23 , and a spring member 72 is disposed in the recessed portion 64 of the engagement member 25 .
  • the upper end of the spring member 72 is in contact with the lower face on the upper wall of the recessed portion 64 , and the lower end thereof is engaged with the side wall protrusion 71 .
  • the center portion of this spring member 72 is constructed so as to be elastically deformable as shown in FIG. 11( b ), and always biases upward the engagement member 25 (the operation rib 62 ).
  • biasing means is constituted by these side wall protrusion 71 and spring member 72 .
  • a side wall protrusion 73 in the center portion of which a circular hole or a long hole is formed to penetrate is formed to protrude
  • a fixed bar 74 is hung down from the lower face of the upper wall of the recessed portion 64 , and the distal end of the fixed bar 74 is constructed so as to be inserted in the hole of the side wall protrusion 73 .
  • a coil spring 75 is disposed around the fixed bar 74 , and by constructing so that the upper end of the coil spring 75 is in contact with the upper wall lower face of the recessed portion 64 , and the lower end is in contact with the upper face of the side wall protrusion 73 , the engagement member 25 (the operation rib 62 ) is constructed so as to be always biased upward. And, biasing means is constituted by these side wall protrusion 73 , fixed bar 74 , and coil spring 75 .
  • a side wall protrusion 76 formed into a lateral cylindrical shape is formed to protrude on the outside face of the short side wall 23 , and also the engagement projection 61 of the engagement member 25 is disposed so as to be in contact with the side wall protrusion 76 .
  • the center portion of the engagement member 25 (the operation rib 62 ) is constructed so as to be always biased upward by making the engagement member 25 of a synthetic resin which can be elastically deformed with ease.
  • the engagement recess 54 is provided at substantially the same height as the upper end of the upper portion limiting hole 52 c, and the engagement portion 55 is formed to protrude so as to extend upward from the lower end of the engagement recess 54 .
  • biasing means is constituted by these engagement projection 61 and side wall protrusion 76 .
  • the engagement member 25 is constituted by five members molded into separate bodies. That is, this engagement member 25 comprises an operation bar 77 as an operation portion and vertical sliding means extending laterally, and a pair of left and right connection bars 78 constituting sliding conversion means formed on both ends of the operation bar 77 and extending obliquely (for example, at 45° with respect to the operation bar 77 ). Further, on the outer ends of both the connection bars 78 , a pair of left and right engagement projections 61 as horizontal sliding members extending horizontally are provided.
  • connection bar 78 are axially attached to one end of the operation bar 77 and the proximal end of the engagement projection 61 so as to be rotatable in a vertical plane in parallel with the outside faces of the respective short side walls 23 .
  • a sliding fitting protrusion constituting sliding conversion means formed into a side face circular shape is formed to protrude, and forcibly fitted in a sliding fitting projection 79 of a rectangular frame shape constituting sliding conversion means formed at a corresponding position on the outside face of the short side wall 23 .
  • the sliding fitting protrusions formed on both ends of the operation bar 77 are constructed so as to be slidable vertically with a predetermined width in the sliding fitting projection 79 , and the sliding fitting protrusion formed on the proximal end of the engagement projection 61 is slidable laterally with a predetermined width in the sliding fitting projection 79 .
  • the sliding fitting projection 79 is constructed so as to be molded by vertical drawing only with an upper mold and a lower mold by a long hole 79 a to penetrate in the short side wall 23 , in molds when the short side wall 23 is molded.
  • a pair of upper and lower biasing boards 66 b extending obliquely upward and obliquely downward, respectively, are formed to protrude.
  • the side wall protrusions 45 are formed to protrude.
  • the side wall protrusion 45 always biases the engagement projection 61 outward of the short side wall 23 .
  • Both side wall protrusions 45 expand from the left side toward the right side of FIG. 14( a ).
  • the size of the second long hole 44 is formed into a size substantially corresponding to the engagement projection 61 .
  • the distal end of the engagement portion 55 in the above embodiment is formed to extend to the lower end of the engagement recess 54 , the rectangular engagement recess 54 as an engagement portion is formed in a side face.
  • the distal end of the engagement projection 61 inserted in the engagement recess 54 is disposed so as to be able to be in contact with one side face (inside face) of the engagement portion 55 , and the short side wall 23 is prevented from rotating inside the container body 21 .
  • outer side at the distal end of the engagement projection 61 is preferably constructed so that the second slanting face 61 a formed so as to slant inside the container body 21 nearer to the distal end may be formed.
  • the slanting face 55 a is preferably constructed so that it is formed to slant outward the container body 21 nearer to the end.
  • both engagement projections 61 are laterally slid toward the inner side direction of the short side wall 23 through both connection bars 78 , and the distal ends of the engagement projections 61 get out from the interior of the engagement recess 54 .
  • an engagement state between the engagement projections 61 and the engagement portion 55 is released, and the short side wall 23 is folded inside the container body 21 . Therefore, by the above construction, the folding operation of the container body 21 can be performed very easily.
  • the slanting face 55 a or the second slanting face 61 a should not be formed on the engagement portion 55 or the distal end of the engagement projection 61 . Or, the slanting face 55 a and the second slanting face 61 a are not formed on the engagement portion 55 and the distal end of the engagement projection 61 .
  • the center portion of the engagement member 25 (the operation rib 62 ) is constructed so as to be always biased downward by biasing means. Further, by moving up the operation rib 62 , it is constructed so as to release an engagement state between the engagement projection 61 and the engagement portion 55 .
  • the biasing means is omitted, and on the bonding portion between the engagement member 25 and the short side wall 23 , stopping means for stopping the engagement member 25 at a predetermined position is provided. Further, by moving up or moving down the operation rib 62 , the container should be constructed such that an engagement state by the stopping means may be relatively easily released, and is also constructed such that an engagement state between the engagement projection 61 and the engagement portion 55 can be released.
  • the operation rib 62 is operated with pressure (lower movement or upper movement) immediately after the short side wall 23 is stood on the supporting protrusion 31 a to engage the engagement projection 61 and the engagement portion 55 , thereby the container body 21 can easily be assembled.
  • an operation for folding the container body 21 can be performed very easily as in the above embodiment.
  • the engagement member 25 is constituted by a plurality of parts, and when it is attached to the container body 21 , it may be constructed so as to connect the parts integrally.
  • the parts may be those wherein the engagement member 25 of the above embodiment is equally divided into two or three in a longitudinal direction (a lateral direction), or among parts where the engagement member 25 of the above embodiment is equally divided into three in a longitudinal direction (a lateral direction), two parts positioning right and left (constituting both ends) and a metallic pipe connecting those parts may be used to construct the engagement member 25 .
  • the length of the engagement projection 61 can be made long.
  • an engagement member 83 is constructed. Note that after injection-molding the operation member 81 and a pair of connection members 82 , the engagement member 83 is constructed integrally with them.
  • the operation member 81 is made of a synthetic resin into a rectangular. At the lower end on the outside face of the center portion of this operation member 81 , the operation rib 62 as an operation portion is formed to extend laterally. Besides, on both ends of the operation member 81 , rectangular connection boards 84 are provided. These connection boards 84 are provided along the outside face of the operation member 81 , and on the inside face (back face or rear face) side, each pair of engagement tubes 85 formed into a cylindrical shape is formed to protrude.
  • connection member 82 connected to one end of the operation member 81 is made of a synthetic resin into a pole having a substantially rectangular cross-section, and further the engagement projection 61 is formed to protrude on its distal end.
  • a rectangular connection recess 86 is formed to a predetermined depth recess, and when it is connected to one end of the operation member 81 as shown in FIG. 17, it is constructed so as to receive the connection board 84 .
  • connection recess 86 In the center portion of this connection recess 86 , a pair of left and right circular holes 87 is formed to penetrate, and when it is connected to one end of the operation member 81 as shown in FIG. 17, it is constructed so as to fit in the corresponding engagement tube 85 .
  • an attachment recess 88 is provided in the center portion of the connection member 82 between the connection recess 86 and the engagement projection 61 .
  • an attachment recess 88 is provided on the outside face of the distal end this attachment recess 88 .
  • an attachment projection 89 formed into a triangular pole shape is formed to protrude. Further, this attachment projection 89 is formed such that it becomes lower when it is nearer to the distal end side of the connection member 82 .
  • a lower portion biasing board 90 constituting biasing means extending obliquely downward toward the distal end of the connection member 82 is formed to protrude.
  • this biasing board 90 is formed to extend at an angle of about 30° with respect to the lower end face of the connection member 82 , it is constructed so as to be elastically deformable.
  • the other connection member connected to the other end of the operation member 81 is formed into a shape to be symmetrical in left and right with the above-mentioned one connection member 82 .
  • a rectangular attachment board 91 is provided to extend in an inner side direction of the short side wall 23 .
  • a pair of attachment pockets 92 are formed on the outer side of the upper end of the short side wall 23 .
  • an attachment sliding hole 93 extending vertically in a long hole shape is formed to penetrate.
  • connection member 83 when the engagement member 83 is attached to the outside face of the short side wall 23 of the container body 21 , as shown in FIG. 18, first, the distal end of one connection member 82 is inserted in one attachment pocket 92 , the engagement projection 61 is inserted in the first long hole 43 and the second long hole 44 , and the attachment projection 89 is inserted to engage in the attachment sliding hole 93 . Next, after the distal end of the other connection member is inserted in the other attachment pocket 92 likewise, by the operation member 81 , the left and right connection members 82 are connected and fixed.
  • each pair of engagement tubes 85 provided on both ends of the operation member 81 is inserted to fit in the circular holes 87 of the connection members 82 , and the connection boards 84 at both ends of the operation member 81 are received in the connection recesses 86 of the connection members 82 .
  • This engagement member 83 is constructed so that a pair of attachment projections 89 formed to protrude on its both ends outside face is slid with being guided vertically in the attachment sliding holes 93 of both ends of the short side wall 23 , and it is capable of moving up and down retaining a predetermined width. Further, since the distal ends of a pair of lower portion biasing boards 90 formed to protrude on its both ends lower faces are in contact with the lower end of the attachment pocket 92 (the upper face of the side wall rib) constituting biasing means, this engagement member 83 is always biased upward. And, the container body 21 of this foldable transportation container can be folded and assembled in entirely the same manner as the above embodiment.
  • connection member 82 or the other connection member may be molded integrally with the operation member 81 (injection molding as one part).
  • the number of parts constituting the engagement member 83 can easily be reduced.
  • the engagement member 25 should be constituted by three parts molded into separate bodies, that is, a vertical sliding member 101 , and a pair of left and right horizontal sliding members 102 provided on both ends of the vertical sliding member 101 . Further, sliding conversion means for transmitting the vertical sliding of the vertical sliding member 101 to the horizontal sliding members 102 with converting into vertical sliding is provided between both ends of the vertical sliding member 101 and the proximal ends of the horizontal sliding members 102 .
  • the vertical sliding member 101 is formed into a side face trapezoidal shape (a substantially rectangular shape), its both edges are formed into a taper shape narrowing upward.
  • the operation rib 62 extending laterally is formed to protrude, and it is possible to easily press downward the vertical sliding member 101 .
  • a pair of left and right sliding engagement holes 103 constituting sliding conversion means formed into a long hole shape extending obliquely upward along edges of the vertical sliding member 101 is formed to penetrate.
  • a pair of left and right sliding engagement holes 65 is formed to penetrate into a long hole shape extending vertically, and engaged with the corresponding sliding engagement projection 46 formed to protrude on the outside face of the short side wall 23 , and attach the vertical sliding member 101 so as to be vertically movable along the outside face of the short side wall 23 .
  • a pair of left and right biasing boards 104 constituting biasing means are formed to protrude. These biasing boards 104 in a pair are formed to protrude so as to extend obliquely downward from the center portion of lower face of the vertical sliding member 101 . Further, the lower ends (the distal ends) of these biasing boards 104 are in contact with the upper face of a lateral rib 105 constituting biasing means formed to protrude so as to extend laterally on the outside face of the short side wall 23 , and always biases upward the vertical sliding member 101 .
  • the engagement projection 61 formed into a long bar shape extending horizontally is provided, and inserted to engage so as to be engageable/disengageable in the engagement recess 54 as an engagement portion as shown in FIG. 14( a ) and FIG. 14( b ).
  • a board-shaped portion 111 constituting a sliding guide portion formed into a substantially rectangular board shape is provided.
  • the upper and lower end faces of this board-shaped portion 111 are each constituted by a flat face extending along a horizontal plane.
  • a circular protrusion 112 formed into a side face circular shape as a sliding engagement protrusion constituting sliding conversion means is formed to protrude so as to extend outward, and inserted to engage so as to be slidable in the sliding engagement hole 103 of the vertical sliding member 101 .
  • attachment holes 113 formed into a side face triangular shape are formed by punching, and constructed so as to be easily attached to the distal end of the horizontal sliding member 102 (the engagement projection 61 ) formed into a separate body to the predetermined position on the outside face of the short side wall 23 .
  • a pair of left and right upper portion ribs 114 extending vertically are formed to protrude.
  • a second attachment hole 115 constituting a sliding guide portion is provided by forming to penetrate the wall face of the short side wall 23 into a rectangular hole shape, and thus it is constructed so as to easily attach the proximal end of the horizontal sliding member 102 (the board-shaped portion 111 ) to the outside face of the short side wall 23 .
  • the second long hole 44 constitutes a sliding a guide portion for horizontally sliding the engagement projection 61 of the horizontal sliding member 102 .
  • a pair of upper and lower stopping ribs 116 constituting a sliding guide portion formed into a side face L-shape for stopping the board-shaped portion 111 is formed to protrude such that it extends outward from the outside face of the short side wall 23 so as to be horizontally slidable.
  • the lower end face of the stopping rib 116 positioning upward and the upper end face of the stopping rib 116 positioning downward are each constituted by a flat face extending along a horizontal plane.
  • the outer side of the distal end of the engagement projection 61 is preferably constructed with the second slanting face 61 a such that it is formed to slant in an inner side direction of the container body 21 nearer to the distal end.
  • the slanting face 55 a is preferably formed so as to slant outward of the container body 21 nearer to the end side.
  • this foldable transportation container is slid downward along the sliding engagement hole 65 , by pressing downward the operation rib 62 shown in FIG. 19( a ) against the biasing force of the biasing board 104 , as shown in FIG. 19( b ), with the vertical sliding member 101 pulling the left and right horizontal sliding members 102 .
  • a pair of left and right horizontal sliding members 102 slide horizontally in inner side directions of the short side wall 23 in accordance with the down movement of the vertical sliding member 101 , an engagement state between the distal end of the engagement projection 61 and the engagement recess 54 is released, and the short side wall 23 is in a state of being foldable inside the container body 21 .
  • the engagement projection 61 and the engagement portion 55 can semi-automatically be made to be engaged by placing a pair of opposing short side walls 23 on the supporting protrusion 31 a.
  • the limiting protrusions 42 a, 42 b, and 42 c should be constructed so as not to be inserted to engage in the limiting holes 52 a, 52 b, and 52 c.
  • an unillustrated second limiting board constituting limiting means formed into a rectangular shape extending vertically and extending in an inner side direction of the container body 21 is formed to protrude on the distal end of the limiting board 51 , and when the container body 21 is assembled, it is constructed so as to be in contact with one side walls of the limiting protrusions 42 a, 42 b, and 42 c.
  • the limiting protrusions 42 a, 42 b, and 42 c need not be formed into a U-shaped side face, and for example, may be formed into a rectangular board shape extending outward from the outside face of the engagement recess 41 .
  • the long side wall 24 can easily be limited such that the container body 21 may not fall outside by bringing the limiting protrusions 42 a, 42 b, and 42 c into contact with the second limiting board.
  • the construction of the container body 21 of the foldable transportation container can easily be simplified.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rigid Containers With Two Or More Constituent Elements (AREA)
  • Stackable Containers (AREA)
US10/151,350 2001-05-21 2002-05-20 Foldable transportation container Abandoned US20030000950A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US11/006,178 US7195128B2 (en) 2001-05-21 2004-12-06 Foldable transportation container

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2001-150717 2001-05-21
JP2001150717 2001-05-21
JP2002003739A JP2003040263A (ja) 2001-05-21 2002-01-10 折り畳み式運搬用容器
JP2002-003739 2002-01-10

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US11/006,178 Continuation US7195128B2 (en) 2001-05-21 2004-12-06 Foldable transportation container

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US20030000950A1 true US20030000950A1 (en) 2003-01-02

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US10/151,350 Abandoned US20030000950A1 (en) 2001-05-21 2002-05-20 Foldable transportation container
US11/006,178 Expired - Fee Related US7195128B2 (en) 2001-05-21 2004-12-06 Foldable transportation container

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US20040178197A1 (en) * 2003-03-10 2004-09-16 Rehrig Pacific Company Collapsible container
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US20050155967A1 (en) * 2004-01-21 2005-07-21 Vial Ignacio B. Locking arrangements for side walls of rigid, foldable or collapsible boxes
US20080116201A1 (en) * 2006-11-17 2008-05-22 Kyle Baltz Container
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US20080302791A1 (en) * 2007-06-11 2008-12-11 Baltz Kyle L Collapsible Container
US20090057320A1 (en) * 2007-08-28 2009-03-05 Meers Ryan C Crate with collapsible wall
US20090101640A1 (en) * 2007-10-18 2009-04-23 Polymer Logistics (Israel) Ltd Foldable Crate With Bidirectional Manually Releasable Fastening Mechanism
US20090134157A1 (en) * 2007-11-26 2009-05-28 Meers Ryan C Crate with collapsible wall
US7717283B2 (en) 2007-11-06 2010-05-18 Rehrig Pacific Company Collapsible container
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WO2011062565A1 (en) * 2009-11-20 2011-05-26 Ay Kasa Polimer Ambalaj Ve Tasima Sistemleri Sanayi Ticaret A.S. Lock system for folding crates
CN103429497A (zh) * 2011-02-10 2013-12-04 埃弗科系统有限公司 盒体
US10167110B2 (en) 2010-05-27 2019-01-01 Rehrig Pacific Company Dual height collapsible container
US10703531B2 (en) 2016-03-11 2020-07-07 Rehrig Pacific Company Collapsible crate with wood appearance
US10894631B2 (en) * 2018-03-31 2021-01-19 Creative Plastic Concepts, Llc Foldable crate
US10913573B2 (en) 2016-11-17 2021-02-09 Rehrig Pacific Company Collapsible container
US10926916B2 (en) 2013-03-10 2021-02-23 Rehrig Pacific Company Crate with retractable wall
US11597557B2 (en) 2018-10-04 2023-03-07 Rehrig Pacific Company Reconfigurable beverage crate
US11597560B2 (en) 2020-09-14 2023-03-07 Rehrig Pacific Company Crate with retractable wall
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US7011225B2 (en) * 2001-07-31 2006-03-14 Schoeller Wavin Systems Services Gmbh Device for releasing and interlocking the collapsible side walls of cases or containers, especially returnable containers made of plastic materials
US20040129700A1 (en) * 2001-07-31 2004-07-08 Oster Heinz Gunter Device for releasing and interlocking the collapsible side walls of cases or containers, especially returnable containers made of plastic materials
US20040178197A1 (en) * 2003-03-10 2004-09-16 Rehrig Pacific Company Collapsible container
AU2004220107B2 (en) * 2003-03-10 2010-06-03 Rehrig Pacific Company Collapsible container
US7017766B2 (en) * 2003-03-10 2006-03-28 Rehrig Pacific Company Collapsible container with side wall latching capability
WO2005056399A1 (en) * 2003-12-15 2005-06-23 Arca Systems International Ab Locking system for a collapsible container
EP1544116A1 (en) 2003-12-15 2005-06-22 Arca Systems AB Locking system for a collapsible container
US20050155967A1 (en) * 2004-01-21 2005-07-21 Vial Ignacio B. Locking arrangements for side walls of rigid, foldable or collapsible boxes
US20080142399A1 (en) * 2005-11-01 2008-06-19 Apps William P Container
US7726502B2 (en) 2005-11-01 2010-06-01 Rehrig Pacific Company Container
US20080116201A1 (en) * 2006-11-17 2008-05-22 Kyle Baltz Container
US20080142530A1 (en) * 2006-12-13 2008-06-19 Meers Ryan C Crate with collapsible wall
US9278775B2 (en) 2006-12-13 2016-03-08 Rehrig Pacific Company Crate with collapsible wall
US20080302791A1 (en) * 2007-06-11 2008-12-11 Baltz Kyle L Collapsible Container
US7641066B2 (en) 2007-06-11 2010-01-05 Rehrig Pacific Company Collapsible container
US20090057320A1 (en) * 2007-08-28 2009-03-05 Meers Ryan C Crate with collapsible wall
US8066147B2 (en) 2007-08-28 2011-11-29 Rehrig Pacific Company Crate with collapsible wall
US20090101640A1 (en) * 2007-10-18 2009-04-23 Polymer Logistics (Israel) Ltd Foldable Crate With Bidirectional Manually Releasable Fastening Mechanism
US7717283B2 (en) 2007-11-06 2010-05-18 Rehrig Pacific Company Collapsible container
US20090134157A1 (en) * 2007-11-26 2009-05-28 Meers Ryan C Crate with collapsible wall
US7896184B2 (en) 2007-11-26 2011-03-01 Rehrig Pacific Company Crate with collapsible wall
US20100230406A1 (en) * 2009-03-13 2010-09-16 Sanko Co., Ltd. Folding container
US8079486B2 (en) 2009-03-13 2011-12-20 Sanko Co., Ltd. Folding container
US20100320202A1 (en) * 2009-06-18 2010-12-23 Sanko Co., Ltd. Folding container
US8201701B2 (en) 2009-06-18 2012-06-19 Sanko Co., Ltd. Folding container
US20110049145A1 (en) * 2009-09-01 2011-03-03 Sanko Co., Ltd. Folding container
US8167158B2 (en) 2009-09-01 2012-05-01 Sanko Co., Ltd. Folding container
WO2011062565A1 (en) * 2009-11-20 2011-05-26 Ay Kasa Polimer Ambalaj Ve Tasima Sistemleri Sanayi Ticaret A.S. Lock system for folding crates
US10167110B2 (en) 2010-05-27 2019-01-01 Rehrig Pacific Company Dual height collapsible container
US9796525B2 (en) * 2011-02-10 2017-10-24 Ifco Systems Gmbh Box
US20130320007A1 (en) * 2011-02-10 2013-12-05 Ifco Systems Gmbh Box
CN103429497A (zh) * 2011-02-10 2013-12-04 埃弗科系统有限公司 盒体
US10926916B2 (en) 2013-03-10 2021-02-23 Rehrig Pacific Company Crate with retractable wall
US10703531B2 (en) 2016-03-11 2020-07-07 Rehrig Pacific Company Collapsible crate with wood appearance
US10913573B2 (en) 2016-11-17 2021-02-09 Rehrig Pacific Company Collapsible container
US10894631B2 (en) * 2018-03-31 2021-01-19 Creative Plastic Concepts, Llc Foldable crate
US11597557B2 (en) 2018-10-04 2023-03-07 Rehrig Pacific Company Reconfigurable beverage crate
US11884483B1 (en) 2020-08-27 2024-01-30 Rehrig Pacific Company Collapsible container with slidable retractable wall
US11597560B2 (en) 2020-09-14 2023-03-07 Rehrig Pacific Company Crate with retractable wall

Also Published As

Publication number Publication date
CN1263655C (zh) 2006-07-12
US20050098557A1 (en) 2005-05-12
US7195128B2 (en) 2007-03-27
JP2003040263A (ja) 2003-02-13
CN1386681A (zh) 2002-12-25

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