Precision-folded, high strength, fatigue-resistant structures and sheet therefor
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B32B-003/24
출원번호
US-0010626
(2011-01-20)
등록번호
US-8377566
(2013-02-19)
발명자
/ 주소
Durney, Max W.
Pendley, Alan D.
출원인 / 주소
Industrial Origami, Inc.
인용정보
피인용 횟수 :
5인용 특허 :
209
초록▼
Precision-folded, high strength, fatigue-resistant structures and a sheet therefore are disclosed. To form the structures, methods for precision bending of a sheet of material along a bend line and a sheet of material formed with bending strap-defining structures, such as slits or grooves, are discl
Precision-folded, high strength, fatigue-resistant structures and a sheet therefore are disclosed. To form the structures, methods for precision bending of a sheet of material along a bend line and a sheet of material formed with bending strap-defining structures, such as slits or grooves, are disclosed. Methods include steps of designing and then separately forming longitudinally extending slits or grooves through the sheet of material in axially spaced relation to produce precise bending of the sheet when bent along the bend line. The bending straps have a configuration and orientation which increases their strength and fatigue resistance, and most preferably slits or arcs are used which causes edges to be engaged and supported on faces of the sheet material on opposite sides of the slits or arcs. The edge-to-face contact produces bending along a virtual fulcrum position in superimposed relation to the bend line. Several slit embodiments suitable for producing edge-to-face engagement support and precise bending are disclosed. With these teachings, forming numerous three-dimensional load-bearing structures from a two dimensional sheet are enabled. Examples of straight and curved beams, chassis, and exoskeletons are disclosed.
대표청구항▼
1. A sheet of material formed for bending along a bend line, the sheet of material comprising: a plurality of grooves formed to a depth not extending through the sheet of material in positions proximate and along the bend line, the grooves each having opposite ends which diverge obliquely away from
1. A sheet of material formed for bending along a bend line, the sheet of material comprising: a plurality of grooves formed to a depth not extending through the sheet of material in positions proximate and along the bend line, the grooves each having opposite ends which diverge obliquely away from the bend line prior to bending of the sheet of material, the grooves being configured and positioned to produce bending of the sheet of material along the bend line. 2. The sheet of material of claim 1, wherein the grooves are positioned on alternating sides of the bend line, and longitudinally adjacent grooves have groove end portions defining bending straps each having a central axis oriented obliquely with respect to the bend line. 3. The sheet of material of claim 2, wherein the central axes of adjacent bending straps are skewed in alternating directions. 4. The sheet of material of claim 2, wherein the bending straps each have a width dimension which increases with distance on both sides of a minimum width dimension. 5. The sheet of material of claim 1, wherein the grooves have arcuate end portions. 6. The sheet of material of claim 1, wherein: the grooves are positioned on alternating sides of the bend line;longitudinally adjacent grooves have arcuate groove end portions defining bending straps each having a central axis oriented obliquely with respect to the bend line; andthe central axes of adjacent bending straps are skewed in alternating directions. 7. The sheet of material of claim 1, wherein each groove comprises a central portion substantially parallel to and offset laterally from the bend line. 8. The sheet of material of claim 7, wherein the grooves are positioned on alternating sides of the bend line, and longitudinally adjacent grooves have groove end portions defining bending straps each having a central axis oriented obliquely with respect to the bend line. 9. The sheet of material of claim 7, wherein the central axes of adjacent bending straps are skewed in alternating directions. 10. The sheet of material of claim 7, wherein the bending straps each have a width dimension which increases with distance on both sides of a minimum width dimension. 11. The sheet of material of claim 7, wherein the grooves have arcuate end portions. 12. The sheet of material of claim 7, wherein: the grooves are positioned on alternating sides of the bend line;longitudinally adjacent grooves have arcuate groove end portions defining bending straps each having a central axis oriented obliquely with respect to the bend line; andthe central axes of adjacent bending straps are skewed in alternating directions. 13. The sheet of material of claim 1, wherein the grooves are arcuate with convex sides facing the bend line. 14. The sheet of material of claim 13, wherein the grooves are positioned on alternating sides of the bend line, and longitudinally adjacent grooves have groove end portions defining bending straps each having a central axis oriented obliquely with respect to the bend line. 15. The sheet of material of claim 13, wherein the central axes of adjacent bending straps are skewed in alternating directions. 16. The sheet of material of claim 13, wherein the grooves are continuous arcs. 17. The sheet of material of claim 13, wherein the grooves are elongated arcuate grooves. 18. The sheet of material of claim 13, wherein: the grooves are positioned on alternating sides of the bend line;longitudinally adjacent grooves have arcuate groove end portions defining bending straps each having a central axis oriented obliquely with respect to the bend line;the central axes of adjacent bending straps are skewed in alternating directions; and the bending straps each have a width dimension which increases with distance on both sides of a minimum width dimension. 19. The sheet of material of claim 18, wherein the grooves are continuous arcs. 20. The sheet of material of claim 18, wherein the grooves are elongated arcuate grooves. 21. A coil comprising the sheet of material of claim 1.
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