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US20090100895A1 - Hinged Three-Dimensional Structure Formed With Two-Dimensional Sheet of Material - Google Patents

Hinged Three-Dimensional Structure Formed With Two-Dimensional Sheet of Material Download PDF

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Publication number
US20090100895A1
US20090100895A1 US12/235,586 US23558608A US2009100895A1 US 20090100895 A1 US20090100895 A1 US 20090100895A1 US 23558608 A US23558608 A US 23558608A US 2009100895 A1 US2009100895 A1 US 2009100895A1
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US
United States
Prior art keywords
sheet material
bend line
bend
hinge
opposing
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
US12/235,586
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English (en)
Inventor
Max W. Durney
Radha Vaidyanathan
Ryan Lam
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.)
Industrial Origami LLC
Original Assignee
Industrial Origami LLC
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 Industrial Origami LLC filed Critical Industrial Origami LLC
Priority to US12/235,586 priority Critical patent/US20090100895A1/en
Assigned to INDUSTRIAL ORIGAMI, INC. reassignment INDUSTRIAL ORIGAMI, INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: VAIDYANATHAN, RADHA, DURNEY, MAX W., LAM, RYAN
Publication of US20090100895A1 publication Critical patent/US20090100895A1/en
Assigned to MOUNTAIN TOP FARM CONSULTING LLC, ENVIRONMENTAL TECHNOLOGIES ASSOCIATES FUND LP, ENVIRONMENTAL TECHNOLOGIES FUND LP reassignment MOUNTAIN TOP FARM CONSULTING LLC SECURITY AGREEMENT Assignors: INDUSTRIAL ORIGAMI, INC.
Abandoned legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D11/00—Bending not restricted to forms of material mentioned in only one of groups B21D5/00, B21D7/00, B21D9/00; Bending not provided for in groups B21D5/00 - B21D9/00; Twisting
    • B21D11/08—Bending by altering the thickness of part of the cross-section of the work

Definitions

  • This invention relates, in general, to two-dimensional sheet materials configured to form hinged three-dimensional structures and methods for their use.
  • folding-structures shown and described in the above patents promote so-called edge-to-face engagement and other phenomena to facilitate folding along a desired bending line.
  • displacements may be formed to facilitate bending along a desired bend line.
  • the three-dimensional objects formed may be enclosures and other structural items having an interior and/or other form of compartment.
  • periodic access to the interior may be necessary for assembly and construction, maintenance and services, and/or other purposes.
  • disassembly to some degree is necessary in order to access the interior.
  • a door or other discrete hinged member may be provided to ease access.
  • such a member requires a discrete door, a discrete hinge, and other parts and fasteners which increase part count, complicates assembly and generally requires more time space and labor.
  • One aspect of the present invention is directed to a method of preparing a substantially two-dimensional sheet material for bending along a bend line to form a three-dimensional structure having a hinge along the bend line.
  • the method may include one or more of the following steps: obtaining a sheet material that is substantially two-dimensional in a region in which a bend is to be made; and forming a plurality of displacements in a thickness direction of the sheet material along opposing sides of the bend line, each displacement having a sheared edge extending between end portions thereof and substantially parallel to the bend line. Adjacent sheared edges overlap one another with respect to the bend line to form a hinge structure therebetween extending along the bend line, the hinge structure having hinge ends that conform in shape with the end portions.
  • the hinge structure is dimensioned and configured for multiple bend and unbend cycles thereby providing a monolithic hinge connecting opposing panels of the sheet material on opposing sides of the bend line.
  • the obtaining step may be accomplished by obtaining a mild steel sheet material.
  • the forming step may be accomplished by forming the displacement such that the sheared edge may be a distance from the bend line that may be at least 75% the thickness (“T”) of the sheet material.
  • the forming step may be accomplished by forming the displacement sheared edges with the substantially linear portion extending between curved portions, and such that adjacent sheared linear portions and curved portions overlap one another for a distance that may be at least approximately 6T.
  • the forming step may be accomplished by forming displacement faces opposing the displacement sheared edges, the method may further include the step of bending one of the opposing panels relative the other opposing panel about the bend line to produce edge-to-face engagement between at least a portion of the sheared edges and a portion of the respective displacement faces.
  • the method may further include the step of bending one of the opposing panels about the bend line relative to the other opposing panel.
  • the method may further include the step of bending one of the opposing panels about the bend line relative to the other opposing panel.
  • the method may further include the step of bending and unbending the one opposing panel about the bend line relative to the other opposing panel at least 25 times, preferably at least 35 times, and most preferably at least 50 times.
  • the method may further include the step of assembling the sheet material into a three-dimensional structure wherein one of the opposing panels provides a hinged panel for the three-dimensional structure that can be opened and closed.
  • the sheet material includes a sheet material substantially two-dimensional in a region in which a bend is to be made, and a plurality of displacements in a thickness direction of the sheet material along opposing sides of the bend line, each displacement having a sheared edge extending between end portions thereof and substantially parallel to the bend line.
  • the adjacent sheared edges may overlap one another with respect to the bend line to form a hinge structure therebetween extending along the bend line, the hinge structure having hinge ends that conform in shape with the end portions.
  • the hinge structure is dimensioned and configured for multiple bend and unbend cycles thereby providing a monolithic hinge connecting opposing panels of the sheet material on opposing sides of the bend line.
  • the sheet material may be mild steel.
  • the sheared edge may be a distance from the bend line that may be at least 75% the thickness (“T”) of the sheet material.
  • the substantially linear portion may extend between curved portions, and wherein adjacent sheared linear and curved portions overlap one another for a distance that may be at least approximately 6T.
  • the sheet material may further include displacement faces opposing the displacement sheared edges, the displacements configured to produce edge-to-face engagement between at least a portion of the sheared edges and a portion of the respective displacement faces while bending one of the opposing panels relative the other opposing panel about the bend line.
  • the hinge structure may be configured to bend and unbend at least 25 times.
  • the hinge structure may be configured to bend and unbend at least 50 times.
  • a three-dimensional structure may include the sheet materials described above, wherein one of the opposing panels forms a hinged access cover for access to a portion of the three-dimensional structure.
  • the three-dimensional structure may be a box, and the hinged access cover may be a lid providing access to an interior portion of the three dimensional structure.
  • a further aspect of the present invention is directed to a substantially two-dimensional sheet material configured for bending along a bend line to form a three-dimensional structure having a hinge along the bend line.
  • the sheet material includes a sheet material substantially two-dimensional in a region in which a bend is to be made, and a plurality of tongues positioned along opposing sides of the bend line, each tongue having a face directed toward the bend line and extending substantially parallel to the bend line, the tongue extending between end portions diverging away from the bend line.
  • the adjacent faces may overlap one another with respect to the bend line to form a hinge structure therebetween extending along the bend line, the hinge structure having hinge roots that conform in shape with the end portions.
  • the hinge structure may be dimensioned and configured for multiple bend and unbend cycles thereby providing a monolithic hinge connecting opposing panels of the sheet material on opposing sides of the bend line.
  • FIG. 1A is a plan view of an exemplary two-dimensional sheet material dimensioned and configured to form a hinged three-dimensional structure in accordance with various aspects of the present invention
  • FIG. 1B is an enlarged detail thereof.
  • FIG. 2 is an isometric view of a portion the sheet material of FIG. 1 , and an enlarged detail thereof, illustrating displacements in the sheet material along a bend line forming hinge structures therebetween in accordance with various aspects of the present invention.
  • FIG. 3 is an isometric view of the sheet material of FIG. 1 showing flanges thereof in a bent position.
  • FIG. 4 is an isometric view of the sheet material of FIG. 1 showing sides thereof in a bent position.
  • FIG. 5 is an isometric view of the sheet material of FIG. 1 showing a top thereof in a bent position.
  • FIG. 6 is an isometric view of the sheet material of FIG. 1 showing the top in a closed position, thereby forming a three-dimensional structure in the form of an enclosure.
  • FIG. 7 is an isometric view of the sheet material of FIG. 1 showing the top in an opened position, thereby allowing access to the interior of the three-dimensional structure.
  • FIG. 8 is an isometric view of a portion of the sheet material of FIG. 1 , and an enlarged detail thereof illustrating the hinge structures after the sheet material has been bent along the bend line.
  • FIGS. 1A and B and FIG. 2 disclose an exemplary two-dimensional (2D) sheet material 30 that has been dimensioned and configured to form a three-dimensional (3D) structure in the form of an enclosure 32 having a hinged access cover 33 .
  • 2D sheet materials can be formed into 3D structures.
  • the depiction of an enclosure is merely exemplary; the teachings of the present inventions for precision bending are also applicable to the production of numerous other 3D structures having hinged panels including, but not limited to, electronic component chasses, automotive components, transport components, construction components, appliances parts, truck components, RF shields, HVAC components, aerospace components, and more. That is, the teachings of the present application are applicable to a wide variety of 3D products and structures that are formed by folding 2D sheet materials, and which would benefit with the provision of a hinged access cover. Such 3D structures may also benefit in that the present invention would allow reducing the 3D structures to their flat forms to facilitate repackaging and reshipping. Such features would be particularly suited for producing reusable shipping containers and the like.
  • the sheet materials of the present inventions are similar to those disclosed by U.S. Pat. No. 6,481,259, U.S. Pat. No. 6,877,349, U.S. Pat. No. 7,152,449, U.S. Pat. No. 7,152,450, U.S. patent application Ser. No. 10/821,818 (Pub. No. 2005/0005670), U.S. Pat. No. 7,032,426, U.S. Pat. No. 7,263,869, U.S. Pat. No. 7,222,511, U.S. patent application Ser. No. 11/357,934 (Pub. No. 2006/0261139), U.S. Pat. No. 7,374,810, U.S.
  • the sheet material is formed of a non-compressible material.
  • Suitable materials include relatively ductile materials such as metal and the like, including but are not limited to mild steel, raw and treated steels such a galvanized steel, stainless steel, aluminum, and alloys thereof.
  • Sheet material 30 includes a plurality of bending structures 35 formed in the sheet material that are positioned along bend lines 37 in a manner similar to that described in the above-mentioned patents and patent applications.
  • the bend lines are configured to define enclosure sides 39 and enclosure ends 40 extending from an enclosure base 42 as well as enclosure sides 39 ′ extending from access cover 33 .
  • the bending structures are formed and oriented to allow precise folding of the sheet material along the bend lines to ultimately position the base, sides ends and access cover in a desired relationship to form the 3D enclosure.
  • the number, position, and relative orientation of the bending structures and bend lines will vary depending upon the desired shape of the desired 3D structure.
  • the bending structures 35 extend along one side of bend lines 37 to facilitate bending therealong in order to bend the 2D sheet material into a 3D structure, as shown in FIG. 1A .
  • the bending structures may be formed along opposing sides of the bend lines to facilitate bending, as described in the above-mentioned patents and patent applications.
  • the bending structures are displacements, however, one will appreciate that other bending structures may be utilized such as the slits, displacements, grooves and/or other bend-inducing structures described in the above-mentioned patents and patent applications.
  • certain bend lines may be configured to serve as a hinge monolithically formed with the remainder of the sheet material.
  • the exemplary embodiment includes one hinged bend line 44 that is configured to serve as a hinge 46 allowing access cover 33 to be bent back and forth multiple times thus providing enclosure 32 with a hinged access cover allowing access to the interior of the enclosure (see, e.g., FIG. 5 , FIG. 6 and FIG. 7 ).
  • the sheet of material may be provided with one, two, three or more hinged bend lines should multiple hinged panels be desired.
  • the 2D sheet materials may be provided with one or more hinged punch-outs which would allow local access.
  • hinged bend line 44 ′ is configured to serve as a hinge 46 ′ allowing knockout panel to similarly be bent back and forth.
  • Hinged bend line 44 includes displacements 47 located on either side of hinged bend line 44 .
  • the displacements are similar to those described in the above-mentioned patents and applications.
  • each displacement 47 includes a tongue 49 which is displaced from the overall planar surface of sheet material 30 .
  • An exemplary embodiment of the tongue is shown in FIG. 2 and FIG. 1B , the former being a top view showing how tongue 49 is displaced above the overall planar surface of sheet material, while the latter figure is a bottom view showing the depression into the sheet material formed by the displacement of the tongue.
  • the exemplary tongue extends substantially parallel to the planar portion of the sheet material, and remains connected to the remainder of the sheet material by an inclined transition zone 51 .
  • the flat and parallel configuration of the exemplary tongue may promote tool life and other advantages, however, one will appreciate that the tongue need not be flat and/or exactly parallel to the remainder of the sheet material.
  • Opposite transition zone 51 is a sheared face 53 extending along a length of displacement 47 .
  • the sheared face has a relatively straight central portion 53 ′ and curved end portions 53 ′′ that diverge away from the bend line.
  • the displacements may be formed by stamping, punching, roll forming and/or other suitable means similar to those discussed in the above mentioned patents and applications.
  • displacements 47 along hinged bend line 44 may have a similar general configuration as displacements utilized elsewhere on the sheet material, the location and placement of displacements 47 relative to hinged bend line and relative to one another is particularly suited to serve as hinge 46 .
  • displacements 47 are positioned on alternating sides of hinged bend line 44 as shown in FIG. 1A and FIG. 1B . More particularly, displacements 47 are spaced away from the hinged bend line in an overlapping fashion relative to adjacent displacements.
  • the length of overlap is greater than approximately 6 to 7 times the thickness (“T”) of the sheet material. Increasing the length of overlap distributes axial torsion over a greater length and thus provides a good hinge geometry for various applications.
  • the displacements are preferably located a distance from the hinged bend line that is at least approximately 75% to 100% to 125% the thickness of the sheet material, which corresponds to a jog (“J”) distance between overlapping of approximately 1.5T to 2T.
  • the jog may be as wide as 3T or 4T. Such placement allows fabrication using otherwise conventional stamping, punching and roll-forming techniques.
  • Such configuration of the displacements generally define hinge structures 54 which extend between overlapping portions of adjacent displacements 47 .
  • a portion of the hinge structure extends along across hinged bend line 44 interconnecting opposing panel portions, and in the case of the exemplary embodiment, interconnecting enclosure end 40 ′ to access cover 33 .
  • the hinge structure includes a diverging portion or root 56 that diverges away from the bend line which is formed by and conforms in shape with curved end portion 53 ′′ of the sheared face.
  • the posture of the root after folding is largely formed by its contact with the adjacent displacement 47 .
  • the curved end portion has a relatively large radii of curvature which serves as a stress reducer to distribute stress at the ends of hinge structure 54 .
  • the radii of curvature of curved end portion 53 ′′ is preferably greater than the thickness of the sheet material, preferably two or three times greater than the thickness of the sheet material, and more preferably approximately three times the thickness or more.
  • the curved end portion serves to increase the cross-sectional area of the hinge structure as it connects to the remainder of the sheet material.
  • Such configuration is believed to distribute torsional stresses within the hinge structure during bending (and unbending), which torsional stresses are schematically illustrated as arrows “T” in FIG. 1B .
  • torsional stresses are schematically illustrated as arrows “B” FIG. 1B .
  • material stresses are schematically illustrated as arrows “B” FIG. 1B .
  • exemplary configuration of mild steel sheet metal incorporating the hinge structure is capable of withstanding 25 or more bending/unbending cycles without failure, and in some instances, greater than 50 cycles without axial shear across and/or other propagation of shear vicinal the hinged bend line.
  • the hinges are configured to withstand at least 35 cycles, more preferably at least 45 cycles.
  • Such a configuration may also facilitate “strap” behavior that subjects the roots 56 of sheet material immediately adjacent the large-radii ends to tension and torsion (see, e.g., arrows “B” in FIG. 1B ).
  • the roots may also serve to facilitate precision bending along the bend line in that they appear to promote bend-assisting tension and torsion in a direction that intersects the bend line.
  • hinge structures 54 allow repeated bending and unbending along hinged bend line 44 without material failure for certain number of cycles that can be “designed” in the structure by varying certain parameters including the jog (e.g., hinge width) and the amount of overlap (e.g., hinge length).
  • Exemplary sheet material 30 is provided with a number of assembly side flanges 58 and an access cover flange 60 .
  • the side flanges are dimensioned and configured to secure the sides and ends to one another once the sheet material has been bent along its respective bend lines.
  • the side flanges and the assembly side flanges are provided with monolithically formed cooperating latching means, similar to that described in U.S. patent application Ser. No. 11/386,463 (now Pub. No. 2006/0277965), the entire contents of which application is incorporated herein for all purposes by this reference.
  • Access cover flange 60 is dimensioned and configured with similar latching means located on the opposing enclosure end 40 .
  • suitable latching means may be utilized, and that no latching means need be provided if so desired.
  • the side and panel flanges are bent by stamping, punching, press-rolling or other suitable means, resulting in the orientation shown in FIG. 3 .
  • stamping, punching, press-rolling or other suitable means resulting in the orientation shown in FIG. 3 .
  • bending structures may be provided to facilitate bending of such flanges into position.
  • the enclosure sides 39 and enclosure ends 40 may then be bent relative to the enclosure base 42 , as shown in FIG. 4 and FIG. 5 .
  • the cooperating latching means will engage thereby securing side flanges 58 to the enclosure sides 39 .
  • the side flanges may be secured to the enclosure sides by well known fastening means.
  • access cover 33 may be folded about hinge bend line 44 such that the access cover pivots down to its closed position, as shown in FIG. 6 .
  • access cover flange is dimensioned and configured to cooperate with latching means provided on the opposing enclosure end 40 to securely hold the access cover in its closed position. While such latching means may be self-locking, it may be preferable to forgo such a self-locking configuration in order to ease reopening of the access cover.
  • the access cover flange may be secured to the opposing enclosure end with well known fastening means.
  • access cover 33 may be reopened, as shown in FIG. 7 , to allow access within the enclosure.
  • enclosure 32 is an electrical component enclosure
  • Hinge 46 allows such access while eliminating the need for a discrete hinge coupling the access cover to the remainder of the enclosure, and thus reduces part count and assembly costs and complexity.
  • knockout panel 33 ′ may be utilized in a similar manner as the access cover.
  • the 2D sheet materials may be provided with one or more knockouts-outs 61 , monolithically formed tabs interconnecting a remote end of panel 33 ′ with the remainder of the sheet.
  • the panel 33 ′ remains connected to the remainder of the sheet material via monolithically formed hinge 46 ′.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
  • Rigid Containers With Two Or More Constituent Elements (AREA)
  • Punching Or Piercing (AREA)
  • Cartons (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
US12/235,586 2007-09-22 2008-09-22 Hinged Three-Dimensional Structure Formed With Two-Dimensional Sheet of Material Abandoned US20090100895A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US12/235,586 US20090100895A1 (en) 2007-09-22 2008-09-22 Hinged Three-Dimensional Structure Formed With Two-Dimensional Sheet of Material

Applications Claiming Priority (2)

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US97446807P 2007-09-22 2007-09-22
US12/235,586 US20090100895A1 (en) 2007-09-22 2008-09-22 Hinged Three-Dimensional Structure Formed With Two-Dimensional Sheet of Material

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US20090100895A1 true US20090100895A1 (en) 2009-04-23

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US (1) US20090100895A1 (pt)
EP (1) EP2205376A1 (pt)
JP (1) JP2010540360A (pt)
KR (1) KR20100068288A (pt)
CN (1) CN101842174A (pt)
BR (1) BRPI0817197A2 (pt)
TW (1) TW200924869A (pt)
WO (1) WO2009039529A1 (pt)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120193136A1 (en) * 2011-01-31 2012-08-02 Laird Technologies, Inc. Folding Methods for Making Frames of Board Level Electromagnetic Interference (EMI) Shields
US9166521B2 (en) 2012-07-06 2015-10-20 Industrial Origami, Inc. Solar panel rack

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010517785A (ja) 2007-02-09 2010-05-27 インダストリアル オリガミ インコーポレイテッド 立体的荷重支持構造
WO2015170395A1 (ja) * 2014-05-09 2015-11-12 日本たばこ産業株式会社 紙製品の端部構造、及び紙製のパッケージ

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US9166521B2 (en) 2012-07-06 2015-10-20 Industrial Origami, Inc. Solar panel rack
US9425731B2 (en) 2012-07-06 2016-08-23 Industrial Origami, Inc. Solar panel rack

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JP2010540360A (ja) 2010-12-24
TW200924869A (en) 2009-06-16
EP2205376A1 (en) 2010-07-14
CN101842174A (zh) 2010-09-22
BRPI0817197A2 (pt) 2015-03-17
WO2009039529A1 (en) 2009-03-26

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