NL2025847B1 - A grate comprising at least one structural element - Google Patents
A grate comprising at least one structural element Download PDFInfo
- Publication number
- NL2025847B1 NL2025847B1 NL2025847A NL2025847A NL2025847B1 NL 2025847 B1 NL2025847 B1 NL 2025847B1 NL 2025847 A NL2025847 A NL 2025847A NL 2025847 A NL2025847 A NL 2025847A NL 2025847 B1 NL2025847 B1 NL 2025847B1
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- coils
- strip
- structural element
- coil
- parts
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Classifications
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
- E04C2/30—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure
- E04C2/32—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure formed of corrugated or otherwise indented sheet-like material; composed of such layers with or without layers of flat sheet-like material
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
- E04C2/30—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure
- E04C2/42—Gratings; Grid-like panels
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/19—Three-dimensional framework structures
Abstract
A grate comprising at least one structural element made of at least a length of a reformed flat strip. The strip is folded successively along fold lines lying at an 5 angle to a longitudinal axis of the unfolded strip. The strip comprises at least three fold lines extending parallel to each other, wherein at each fold line the parts are folded in the same direction. The strip comprises at least three flat parts, each part being connected to an adjacent part at one of the fold lines. The reformed flat strip forms a coil comprising a number of windings, wherein each winding comprises at 10 least three flat parts.
Description
I A grate comprising at least one structural element
FIELD OF THE INVENTION The invention relates to a grate comprising at least one structural element comprising at least a length of a reformed flat strip, which strip is folded successively along fold lines lying at an angle to a longitudinal axis of the unfolded strip, wherein at Jeast three fold lines extending parallel to each other, wherein the reformed flat strip comprises at least three flat parts, each part being connected to an adjacent part at one of the fold lines, wherein at each fold line the parts are folded in the same direction, whereby the reformed flat strip forms a coil comprising a number of windings, wherein each winding comprises at least three flat parts,
BACKGROUND OF THE INVENTION Us4291515 discloses a girder or like structural element of the kind consisting of a pair of chords, which are usually parallel, and a web in the form of a zigzag strip consisting of oblique straights alternating with crests by which the web is joined to and between the chords by welding or otherwise.
The chords are U-shaped and form essential elements of the girder according to Us4201515. A disadvantage of the known girder is that it comprises chords as well as a web. Another disadvantage is that the U-shaped chords take away the view through the girder in two directions perpendicular to the longitudinal direction of the U-shaped chords. Another disadvantage is that the girder has a longitudinal dimension being much larger than the dimensions in the two other dimensions, due to which the girder is only suitable as such a structural element.
At least one of the objects of the invention is to provide a grate which can easily be manufactured in a large number of shapes and appearances, . This object is accomplished with the grate according to the invention in that the grate comprises at Jeast two coils, extending parallel to each other, wherein the coils are positioned against each other and connected to each other via flat parts of the coils. Since all fold lines within a coil extend in the same direction and parallel to each other and the parts are folded in the same direction, it is relatively easy to fold the strip over a simple mould. The flat parts of each winding surrounds an open space so that the coil has a continuous open space extending through the whole coil. If desired a rod can be applied in the open space. The strip will be bend in three dimensions.
If a winding comprises N parts, the same part is present in the strip after each N parts. This distance over N parts determines the lead or pitch of the coil.
Furthermore, having an endless strip, the structural element can be made as long as desired.
Connecting the flat parts of different coils to each other can be done bv positioning the flat parts of the coils against each other and subsequently welding, glueing, screwing or any other suitable way to connect the flat parts to each other. The coils are positioned against each other, whereby sides of the flat parts directed to the outer side of the coils abut against each other. In case that the coils extend horizontally, the coils are being stacked and positioned on top of each other. No intertwining is needed since the flat parts are connected to each other by other means. This has the advantage that additional coils can easily be added in a later phase if the grate must be enlarged.
Due to the interconnected coils, the grade will be relatively sturdy. Furthermore, since coils with different dimensions and cross sections can easily be made, a large variety of grates can easily be manufactured in any required width, height and depth and from strips made of any desired material If the flat parts being connected to each other are all located in parallel planes, a grate extending in one plane will be obtained. Such a grate will be relatively lightweight, blurring the view to any desirable amount and sound absorbing.
It has to be noticed that by a structural element which is known from US2978077A, the unfolded strip is provided with alternating first and second pairs of bends, wherein the bends of the first pairs of bends extend under an angle of 45 degrees with the longitudinal axis of the unfolded strip, whilst the bends of the second pairs of bends extend under an angle of 135 degrees with the longitudinal axis of the unfolded strip. So the bends of the second pairs of bends are inclined in opposite direction to that at which the bends of the first pairs of bends are inclined.
Furthermore, within each pair, the parts at a first bend of said pair are being bent in a first direction whilst the parts at a second bend of said pair are being bent in a second direction, being opposite to the first direction.
A disadvantage of such a structural element is that the production thereof is relatively complicated due to the alternating direction of inclination and the alternating direction of bending.
It has to be noted that US0339732A1 disclosed a grate whereby folded strips are intertwined. Due to the intertwining the production of the grate is relatively complicated.
An embodiment of the grate according to the invention is characterized in that the structural element comprises at least two coils, wherein between the adjacent coils of the structural element, the strip of the structural element comprises at least one connecting part being connected to the adjacent coils via additional fold lines.
By means of the at least one connecting part, the coils can be positioned with respect to each other in any desirable position. In case of a grate, the coils are preferably positioned parallel to each other so that flat parts of the coils can be connected to each other.
In this manner it is possible to produce a relative long structural element, comprising a number of coils, which can easily be folded into a grate, whereby at the connection between the coils a smooth transition is obtained formed by the at least one connecting part.
Another embodiment of the grate according to the invention is characterized in that a first of said at least two coils spirals in a first direction, whilst a second of said at least two coils spirals in a second direction being opposite to the first direction. In this manner the view of the grate differs from one coil to the next coil. Another embodiment of the grate according to the invention is characterized in that the cross section of adjacent coils differ. In this manner the view of the grate differs from one coil to the next coil. Another embodiment of the grate according to the invention is characterized in that the coils are connected to each other via flat parts of the coils, whereby the flat parts are connected to an intermediate strip. The intermediate strip forms a clear distinction between the two coils, whereby each coil can be attached to the strip independent of the other coil. Another embodiment of the grate according to the invention is characterized in that flat parts of a first of said at Jeast three coils connected to flat parts of a second of said at least three coils extend at an angel of more than 10 degrees to other flat parts of the first of said at least three coils connected to flat parts of a third of said at least three coils. In this manner, the different coils will not be located in the same plane but the axial axis of the different coils will be located in a curved plane. In this manner a corner of for example a fence comprising a grate according to the invention can easily be made.
Another embodiment of the grate according to the invention is characterized in that the strip comprises a number of pairs of adjacent fold lines, wherein within each pair the distance between the adjacent fold lines is the same.
In this manner the parts located between the fold lines of each pair have the 5 same dimension and shape.
Another embodiment of the grate according to the invention is characterized in that the distance between each pair of adjacent fold lines is the same.
Since within each pair the distance between the adjacent fold lines is the same as well as the distance between each pair of adjacent fold lines is the same, a rectangular cross section of the coil is obtained.
Another embodiment of the grate according to the invention is characterized in that the distance between each pair of adjacent fold lines is the same as the distance between the adjacent fold lines of each pair.
In this manner a square cross section of the coil is obtained.
Another embodiment of the grate according to the invention is characterized in that the cross section of the coil has a triangular, rectangular, trapezium, parallelogram or polygonal shape.
The shape of the cross section depends on the number N of parts of each winding as well as the distances between adjacent fold lines of parts of the winding.
Another embodiment of the grate according to the invention is characterized in that the angle to a longitudinal axis of the unfolded strip is in the range between 10 and 80 degrees, preferably between 30 and 70 degrees.
The angle determines the inclination of the fold line with respect to the longitudinal axis of the unfolded strip. The angle in combination with the number N of parts of one winding and the distances between fold lines of these N parts determine the lead or pitch of the coil, meaning the distance in axial direction of the coil of one single winding lead or pitch of the coil.
Another embodiment of the grate according to the invention is characterized in that the structural element comprises at least two coils, wherein between the adjacent coils of the structural element, the strip of the structural element comprises at least one connecting part being connected to the adjacent coils via additional fold lines.
By means of the connecting parts, the two coils can be positioned above one another, for example. The fold lines of the different coils can have the same angle to a longitudinal axis of the unfolded strip or have different angles to obtain a different coil. Also the number of parts of the windings of the different coils and the distances between the fold lines of the parts of the windings of the different coils may vary. In this manner a structural element with the desired shape and dimensions of the several coils can easily be obtained.
Another embodiment of the grate according to the invention is characterized in that a first of said at least two coils spirals in a first direction, whilst a second of said at least two coils spirals in a second direction being opposite to the first direction.
The fold lines of the different coils are inclined in opposite direction. Since the inclination only changes after a number of windings so a relatively large number of told lines, the manufacturing of the structural element is still relatively easy.
BRIEF DESCRIPTION OF THE DRAWINGS The structural element and grate according to the invention will further be explained with reference to the drawings, wherein, figures 1A-1D are a perspective view, side view, top view and cross section of a first embodiment of a structural element according to the invention, figures 2A and 2B are a perspective view of a folded strip and a top view of an unfolded strip of a second embodiment of a structural element according to the invention, figures 3A and 3B; 4A and 4B; 5A and 5B; 6A and 6B are respectively a perspective view of a folded strip and a top view of an unfolded strip of other embodiments of a structural element according to the invention,
figures 7A and 7B; 8A and 8B; 9A and 9B; 10A and 10B are respectively a perspective view of a folded strip, a top view of an unfolded strip and a cross section of the folded strip of other embodiments of a structural element according to the invention, figures 11, 12, 13 are perspective views showing different ways to interconnect two coils of structural elements according to the invention, figures 14A and 14B; 15A and 15B; 16A and 16B; 17A and 17B are respectively a perspective view and cross section of a part of different embodiments of a grate according to the invention, figures 18A and 18B; 19A and 19B; 20A and 20B are respectively a perspective view of a folded strip and a top view of an unfolded strip of other embodiments of a structural element accordin g to the invention, figures 21A and 21B; 22A and 22B; 23A and 23B; 24A and 24B are respectively a perspective view and schematic top view of a part of different embodiments of a grate according to the invention, which grates extend around a corner, figure 25 1s a perspective view of a grate element according to the invention, which grate extend around an object, figures 26A and 26Bare respectively a perspective view of a folded strip, a top view of an unfolded strip and a cross section of the folded strip of another embodiment of a structural element according to the invention. In the drawings, like reference numerals refer to like elements.
DESCRIPTION OF PREFERRED EMBODIMENTS Figures 1A-1D show a perspective view, side view, top view and cross section of a first embodiment of a structural element 1 according to the invention. The structural element 1 is made out of a flat strip 2, for example made of metal like steel, aluminium although also other materials like plastic can be used.
The strip 2 is folded successively along fold lines 3, 4, 5, 6 lving at an angle A to a Jongitudinal axis of the unfolded strip 2. The fold lines 3, 4, 5, 6 extend parallel to each other. The strip 2 comprises a repetitive number N of four flat parts 7, 8, 9,
10. Flat part 7 is connected to flat part 8 by fold line 4, flat part 8 is connected to flat part 9 by fold line 5, flat part 9 is connected to flat part 10 by fold line 3 and flat part 10 is connected to a next flat part 7 by fold line 3. At each fold line 3, 4, 5, 6 the parts 7, 8, 9, 10 are folded in the same direction, whereby the folded and reformed flat strip 2 forms a coil comprising a number of windings. The coil of the structural element 1 as shown in figures 1A-1D shows a little more than two windings, each having a pitch P.
In the embodiment as shown in figures 1A-1D the distances between the fold lines 3-4 and 5-6 are the same. The distances between the fold lines 3-6 and 4-5 are the same but are larger than the distances between the fold lines 3-4 and 5-6. The parts 7, 8; 8, 9; 9, 10; 10, 7 enclose angles C of 90 degrees with each other. Due to these dimensions, the cross section of the structural element 1, as can be seen in figure 1D, is rectangular.
In each below example the width of the strip 2 is B, the thickness of the strip 2 is T, the angle A is the inclination of the fold lines with the longitudinal axis of the strip 2, the width of the coil is W and the height of the coil is H. In this embodiment, the width W is identical to the distance between the fold lines 3, 4; 5,6 and the height is identical to the distance between the fold lines 3,6; 4,5. The angle A, the width B, the width W and the height H determine the pitch P.
Figures 2A is a perspective view of a second embodiment of a structural element 11 according to the invention. Figure 2B is a top view of an unfolded strip of the structural element 11. The cross section of the coil is rectangular. The coil spirals counter clockwise.
The width B of the strip 2 is 30 millimetre, the thickness T of the strip 2 is 1 millimetre, the angle A is 60 degrees, the width W is 25 millimetre and the height H is 50 millimetre. Due to these dimensions the pitch P is about 83 millimetre millimetre.
Figures 3A is a perspective view of another embodiment of a structural element 12 according to the invention. Figure 3B is a top view of an unfolded strip of the structural element 12. The cross section of the coil is rectangular. The coil spirals counter clockwise.
The width B of the strip 2 is 15 millimetre, the thickness T of the strip 2 is 1 millimetre, the angle A is 60 degrees, the width W is 25 millimetre and the height H is 50 millimetre. Due to these dimensions the pitch P is about 83 millimetre millimetre.
Figures 4A is a perspective view of another embodiment of a structural element 13 according to the invention. Figure 4B is a top view of an unfolded strip of the structural element 13. The cross section of the coil is rectangular. The coil spirals clockwise. The parts 7, 8, 9, 10 of the strip 2 of the structural element 13 have been folded in an opposite direction compared with parts 7, 8, 9, 10 of the structural elements 1, 11, 12.
The width B of the strip 2 is 40 millimetre, the thickness T of the strip 2 is 1 millimetre, the angle A is 60 degrees, the width W is 25 millimetre and the height H is 50 millimetre.
Figures 5A is a perspective view of another embodiment of a structural element 14 according to the invention. Figure 5B is a top view of an unfolded strip of the structural element 14. The cross section of the coil is rectangular. The coil spirals counter clockwise.
The width B of the strip 2 is 55 millimetre, the thickness T of the strip 2 is 1 millimetre, the angle A is 30 degrees, the width W is 25 millimetre and the height H is 50 millimetre. Due to these dimensions the pitch P is about 250 millimetre millimetre.
Figures 6A is a perspective view of another embodiment of a structural element 15 according to the invention. Figure 6B is a top view of an unfolded strip of the structural element 15. The cross section of the coil is rectangular. The coil spirals counter clockwise.
The width B of the strip 2 is 20 millimetre, the thickness T of the strip 2 is 1 millimetre, the angle A is 70 degrees, the width W is 25 millimetre and the height H is 50 millimetre. Due to these dimensions the pitch P is about 52 millimetre millimetre.
Figures 7A is a perspective view of another embodiment of a structural element 16 according to the invention. Figure 7B is a top view of an unfolded strip of the structural element 16. Figure 7C is a cross section of the coil of the structural element 16. As best can be seen figure 7C the distances between the fold lines 3-4 and 5-6 are the same but the distances between the fold lines 3-6 and 4-5 are not the same. The parts 7,10; 9,10 enclose sharp angles whilst the parts 7,8; 8,9 enclose obtuse angles. Due to these dimensions, the cross section of the coil of the structural element 16 is trapezium shaped. The coil spirals counter clockwise.
The width B of the strip 2 is 30 millimetre, the thickness T of the strip 2 is 1 millimetre, the angle A is 60 degrees, the width W is 25 millimetre and the height His 50 millimetre. The two identical sharp angles of the cross section of the coil of the structural element 16 are 70 degrees so the obtuse identical angles are 110 degrees.
Figures 8A is a perspective view of another embodiment of a structural element 17 according to the invention. Figure 8B is a top view of an unfolded strip of the structural element 17. Figure 8C is a cross section of the coil of the structural element 17. As best can be seen figure 8C the distances between the fold lines 3-4 and 5-6 are the same, the distances between the fold lines 3-6 and 4-5 are the same. The parts 7,10; 8, 9 enclose sharp angles whilst the parts 7,8; 9,10 enclose obtuse angles. Due to these dimensions, the cross section of the coil of the structural element 16 is a parallelogram. The coil spirals counter clockwise.
The width B of the strip 2 is 30 millimetre, the thickness T of the strip 2 is 1 millimetre, the angle A is 60 degrees, the width W is 25 millimetre and the height H is 50 millimetre. The two identical sharp angles of the cross section of the coil of the structural element 17 are 70 degrees so the obtuse identical angles are 110 degrees.
u Figures 9A is a perspective view of another embodiment of a structural element 18 according to the invention.
Figure 8B is a top view of an unfolded strip of the structural element 18. Figure 8C is a cross section of the coil of the structural element 18. The strip 19 comprises a repetitive number N of three flat parts 20, 21, 22. Flat part 20 is connected to flat part 21 by fold line 23, flat part 21 is connected to flat part 22 by fold line 24, flat part 22 is connected to flat part 20 by fold line 25. At each fold line 23, 24, 25 the parts 20, 21, 22 are folded in the same direction, whereby the folded and reformed flat strip 19 forms a coil comprising a number of windings.
The coil of the structural element 1 as shown in figures 1A-1D shows a little more than five windings, each having a pitch P.
The distance between each pair of adjacent fold lines 23, 24, 25 is the same.
The angle D between the parts 20- 21; 21-22; 22-20 ís 60 degrees.
Due to these dimensions, the cross section of the coil of the structural element 18 is a triangular.
The coil spirals counter clockwise.
The width B of the strip 2 is 30 millimetre, the thickness T of the strip 2 is 1 millimetre, the angle A is 60 degrees, the height Hi is 35 millimetre, Figures 10A is a perspective view of another embodiment of a structural element 27 according to the invention.
Figure 10B is a top view of an unfolded strip of the structural element 27. Figure 10C is a cross section of the coil of the structural element 27. As best can be seen figure 10C the distances between the fold lines 3-4, 4-5; 5-6 and 6-3 are all different.
The parts 7-10 enclose an angle of 90 degrees, the part 10,9 enclose an angle of 60 degrees, the part 8, 9 enclose an angle of 130 degrees and the part 7,8 enclose an angle of 80 degrees.
The distance between fold lines 3,6 is 50 millimetre, the distance between fold lines 5,6 is 40 millimetre, the distance between fold lines 4,5 is 30 millimetre and the distance between fold lines 3,4 is 40 millimetre.
Due to these dimensions, the cross section of the coil of the structural element 27 has a polygonal shape.
The coil spirals counter clockwise.
The width B of the strip 2 is 30 millimetre, the thickness T of the strip 2 is 1 millimetre, the angle A is 60 degrees.
Figure 11 shows a part of a grate 28 according to the invention, whereby two structural elements are connected to each other.
The upper structural element is identical to the structural element 11 as shown in figure 2. The lower structural element 29 is similar to structural element u except that it spirals clockwise instead of counter clockwise. Parts 7 of upper structural element 29 are aligned with parts 9 of lower structural element 11 and are connected to each other, for example by welding, glueing, pop nails or any other suitable way to connect parts to each other. As can be seen the interconnected parallellogram shaped flat parts 7,9 are identical and fully aligned.
Any desired number of structural elements 11, 29 can be connected to each other at the parts 7, 9, whereby the grate 28 comprises alternating structural element 11 and structural element 29. The length in axial direction of the grate 28 can be as long as desired and will be determined by the number of windings of the coil of the structural elements 11, 29 only.
Figure 12 shows a front view of part of a grate 30 according to the invention, whereby two structural elements 29 are connected to each other. The offset of parts 7 of the upper structural element 29 with respect to the parts 9 of the lower structural element 29 is identical in the front view and the rear view of the grate
30.
Figure 13 shows a front view of part of a grate 30’ according to the invention, whereby two structural elements 29 are connected to each other. The parts 7 of the upper structural element 29 with respect to the lower structural element 29 are aligned in the front view and are offset in the rear view of the grate 30.
Parts 7 of upper structural element 11 are connected to parts 9 of lower structural element 11, whereby parts 10 are aligned with each other.
As can be seen in the figures 11, 12, 13 a complete different look is obtained depending on the way similar structural elements 11, 29 are connected to each other and from which side the grate 30 is being looked at. It is of course also possible to connect structural elements 11 to each other, whereby a structural element 11 is connected to a lower structural element 11 in a manner that the parts 8 are aligned and to an upper structural element 11 in a manner that the parts 10 are aligned. In this way different grates can be obtained with identical structural elements 11.
Figures 14A and 14B show respectively a perspective view and a cross section of a part of a grate 31 according to the invention.
The grate 31 comprises alternating structural elements 32, 33. The structural element 32 spirals clockwise, whilst the structural elements 33 spirals counter clockwise. The structural elements 32, 33 are connected to each other in the same way as shown in figure 11. The structural elements 32, 33 have a rectangular cross section. The structural elements 32, 33 differ from each other in that the height H2 of the structural element 32 is smaller than the height H3 of the structural element
33. The width W of both structural elements 32, 33 is equal. To be able to connect the parts 7, 9 of the structural elements 32, 33 to each other the angle A of the less higher structural element 32 is smaller than the angle A of the structural element
33. As can be seen the interconnected parallellogram shaped flat parts 7,9 are identical and fully aligned.
Figures 15A and 15B show respectively a perspective view and a cross section of a part of a grate 35 according to the invention.
The grate 35 comprises alternating structural elements 36, 37. The structural element 36 spirals clockwise, whilst the structural elements 37 spirals counter clockwise. The structural elements 36, 37 are connected to each other in the same way as shown in figure 11. The structural element 36 has a rectangular cross section.
The structural element 37 has a square cross section. The structural elements 36, 37 differ from each other in that the height H2 of the structural element 36 is larger than the height H3 of the structural element 37. The width Wi of structural element 36 is smaller than the width W2 of the structural element 37. The angles A of the structural elements 36, 37 are identical. To be able to connect the parts 7, 9 of the structural elements 32, 33 to each other the perimeter of structural element
36 being 2*Wi1+2*H2 is identical to the perimeter of structural element 27 being 2*Wa+2%*Hs3.
Figures 16A and 16B show respectively a perspective view and a cross section of a part of a grate 38 according to the invention.
The grate 38 comprises only structural elements 36, alternating spiraling in clockwise and counter cloclwise direction. The grate 38 comprises flat strips 39 located between each pair of two structural elements 36, whereby the parts 7, 9 of the structural elements 36 are connected to the strip 39. The strip 39 has the same width W as the structural elements 36. This embodiment has the advantage that each structural element 36 can be positioned at any desired orientation with respect to a lower and upper structural element 36.
Figures 17A and 17B show respectively a perspective view and a cross section of a part of a grate 40 according to the invention.
The grate 40 comprises alternating structural elements 41, 42. The structural element 41 has a triangular cross section like structural element 18. The structural element 42 has a trapezium shaped cross section like structural element 16. The angle E between parts 7,10; 9,10 of the structural element 42 are identical to the angle D of the structural element 41, so 60 degrees. In this manner parts 7,9 of the structural elements 41, 42 can be connected to each other, whereby a grate 40 extending along a plane is obtained. By the grate 40, parts 22 of the structural elements 41 and parts 8 of the structural elements 42 are aligned. However, it is also possible that these parts 8, 22 are mounted with an off set with respect to each other.
Figures 18A and 18B show respectively a perspective view of a structural element 44 and a top view of an unfolded strip 45 of the structural element 44 according to the invention.
The unfolded strip 45 comprises on the right side a number of fold lines 46 inclined under an angle A1 with respect to the longitudinal axis of the strip 45 and on the left side a number of fold lines 47 inclined under an angle A2 with respect to the longitudinal axis of the strip 45. The angle A2 is equal to angle Ai but the fold lines 46, 47 extend in opposite directions. The portion of the strip 45 comprises the fold lines 46 will be folded to obtain a coil spiralling in a counter clockwise direction, whilst the portion of the strip 45 comprises the fold lines 47 will be folded to obtain a coil spiralling in a clockwise direction. At the middle of the strip 454 part 48 is located bounded by two fold lines 49 extending perpendicular to the longitudinal axis of the strip 45. Connected to the part 48 at the fold line 49 is part 50 being connected to the right portion of the strip 45 by fold line 46. In the same manner connected to the part 48 at the other fold Jine 49 is part 51 being connected to the left portion of the strip 45 by fold line 47.
The parts 48, 50, 51 forms connecting parts connecting the upper coil formed out of the right portion of the strip 45 and the lower coil formed out of the left portion of the strip 45.
Figures 19A and 19B show respectively a perspective view of a structural element 54 and a top view of an unfolded strip 55 of the structural element 54 according to the invention.
The unfolded strip 55 comprises on the left side a number of fold lines 46 inclined under an angle A1 with respect to the longitudinal axis of the strip 55 and on the right side a number of fold lines 47 inclined under an angle A2 with respect to the longitudinal axis of the strip 55. The angle A2 is equal to angle A1 but the fold lines 46, 47 extend in opposite directions. The portion of the strip 55 comprises the fold lines 46 will be folded to obtain a coil spiralling in a counter clockwise direction, whilst the portion of the strip 55 comprises the fold lines 47 will be folded to obtain a coil spiralling in a clockwise direction. At the middle of the strip 55 a part 48 is located bounded by two fold lines 49 extending in the same direction as the nearest fold line 46, 47.. Connected to the part 48 at the fold line 49 is part 50 being connected to the left portion of the strip 55 by a further fold line 49. In the same manner connected to the part 48 at the other fold line 49 is part 51 being connected to the right portion of the strip 45 by a further fold line 49.
The parts 48, 50, 51 forms connecting parts connecting the upper coil formed out of the left portion of the strip 55 and the Jower coil formed out of the right portion of the strip 55.
Figures 20A and 20B show respectively a perspective view of a structural element 64 and a top view of an unfolded strip 65 of the structural element 44 according to the invention.
The unfolded strip 65 comprises on the left side a number of fold lines 46 inclined under an angle A1 with respect to the longitudinal axis of the strip 65 and on the right side a number of fold lines 47 inclined under an angle A2 with respect to the longitudinal axis of the strip 65. The angle A2 is equal to angle A. This means that the fold lines 46, 47 extend under the same angle and in the same directions. The portion of the strip 65 comprises the fold lines 46 will be folded to obtain a coil spiralling in a counter clockwise direction. Also the portion of the strip 65 comprises the fold lines 47 will be folded to obtain a coil spiralling in a counter clockwise direction. At the middle of the strip 65 a part 48 is located bounded by two parallel fold lines 49 extending under an angle A3. Connected to the part 48 at the fold line 49 is part 50 being connected to the left portion of the strip 55 by fold line 46. In the same manner connected to the part 48 at the other told line 49 is part 51 being connected to the right portion of the strip 45 by fold line 47. The parts 48, 50, 51 forms connecting parts connecting the upper coil formed out of the left portion of the strip 65 and the lower coil formed out of the right portion of the strip 65.
As shown in the figures 18A-20B at an edge of the structural element 44, 54, 64 it can be seen that the lower coil continues via the connecting parts into the upper coil.
The strips 45, 55, 65 can be as long as desired and comprises as many transitions comprising connecting parts from one coil to another coil so that a single structural element 44, 54, 64 of any desired length determined by the length of each coil and any desired height determined by the height and number of coils can by manufactured without the need to position separate structural elements with respect to each other. The coils need only to be aligned with respect to each other. Each coils made from strip 45, 55, 65 can have any desired cross section, and height and width.
Figures 21A and 21B show respectively a perspective view and schematic top view of a part of a grate 74 according to the invention. The grate 94 comprises a number of similar coils 75, 75’, 75°, 75° connected to each other. The coils 75’, 757 spiral in opposite direction to the coils 75, 75”. As can be best seen in figure 12B coil 75 located in the left lower corner is connected with a portion of parts 77 to parts 76 of a coil 75” located on the right thereof. The coil 75’ is connected with parts 76 to parts 78 of a coil 75” located above it. In this manner a corner has been created in the grate 74, which grate 74 comprises further as many coils 75 in line with coil 75" and as many coils 75 in line with coil 75°” as desired.
The corner forms a right angle.
Figures 22A and 22B show respectively a perspective view and schematic top view of a part of a grate 84 according to the invention. The grate 84 comprises a number of similar coils 75, 75’, 75”, 75° connected to each other. The coils 75’, 757” spiral in opposite direction to the coils 75, 757. The grate 84 also comprises two coils 85, 86. The coils 85 and 86 are a mirror image of each other. The coil 85 is connected with parts 76 to parts 78 of a coil 75. The coil 86 is connected with parts 76 to parts 78 of a coil 75. The coils 85, 86 are connected to each other at parts 87, 88 respectively, which parts 87, 88 extend under an angle of 45 degrees with the parts 76, 78. In this manner a corner has been created in the grate 84, which grate 84 comprises further as many coils 75 in line with the coils 75 connected to the coils 85, 86 as desired.
The corner forms a right angle. Figures 23A and 23B show respectively a perspective view and schematic top view of a part of a grate 94 according to the invention. The grate 94 comprises a number of similar coils 75, 75’, 75”, 75° connected to each other. The coils 75, 757” spiral in opposite direction to the coils 75, 75”. The grate 94 also comprises two coils 95, 95’ having a trapezium shaped cross section. The sharp corners in the trapezium shaped cross section is 67,5 degrees The coil 95 is connected with parts 96 to parts 78 of a coil 75. The coil 95’ is connected with parts 97 to parts 76 of a coil 75. The coils 95, 95’ are connected to each other at parts 97, 96 respectively. In this manner a corner can be created in the grate 94, which grate 94 comprises further as many coils 75 in line with the coils 75 connected to the coils 95, 95’ as desired. The corner forms a rounded angle. Figures 24A and 24B show respectively a perspective view and schematic top view of a part of a grate 104 according to the invention. The grate 104 comprises a number of coils 75 as well as four coils 105, 105’, 105”, 105” each having a trapezium shaped cross section. A coil spiralling in one direction is located between two other coils spiralling in another direction. The sharp corners in the trapezium shaped cross section is 78,75 degrees. The coil 105 is connected with parts 106 to parts 78 of a coil 75. The coil 105’ is connected with parts 106 to parts 107 of a coil 105. The coil 105” is connected with parts 106 to parts 107 of a coil 105’. The coil 1057 is connected with parts 106 to parts 107 of a coil 105”. The coil 105” is connected with parts 107 to parts 76 of coil 76.
In this manner a corner has been created in the grate 104, which grate 104 comprises further as many coils 75 in line with the coils 75 connected to the coils 105, 105’” as desired.
The corner forms a rounded angle. As can be seen due to the larger amount of trapezium shaped coils, the corner of grate 104 is more rounded as the corner of grate 94.
Figure 25 shows a perspective view of a grate element 114 according to the invention, which grate 114 extend around an object like an air conditioner 115 mounted on top of a roof or against a wall. The grate 114 comprises a large number of coils having their axial direction extending in vertical direction. The coils are located in three planes, two planes being parallel to the sides of the box shaped air conditioner 115 and one plane located parallel to a front side of the air conditioner
15. The planes are connected to each other by corners as shown in the figures 24A- 24B, for example. The grate 114 is provided with brackets 116 to be able to connect the grate 114 to a wall against which the air conditioner 115 is mounted.
Figures 26A is a perspective view of another embodiment of a structural element 120 according to the invention. Figure 26B is a top view of an unfolded strip 121 of the structural element 16. Figure 26C is a cross section of the coil of the structural element 120. As best can be seen figure 7C the coil of the structural element 120 comprises five different parts 122, 123, 124, 125, 126 connected to each other at folding lines 127, 128, 129, 130, 131. Each part 122, 123, 124, 125, 126 has a different width W.
From this structural element 120 it is clear that the coil of the structural element according to the invention can have as many flat parts as desired. However, in practice the number of parts will normally be less than 10, preferably less than 5 and normally be 3 or 4.
The grate according to the invention can be used a fence, separation wall, wall panel etc.
Preferably the grates are made of steel or aluminium.
The width B of the strip is preferably between 10 and 60 millimetre.
The thickness T of the strip is preferably between 1 and 3 millimetre.
The angle A is preferably between 30 and 150 degrees.
The width W of the coil is preferably between 20 and 100 millimetre.
The height H of the coil is preferably between 40 and 200 millimetre.
The angle C is preferably between 60 and 170 degrees
LIST OF REFERENCE SIGNS I structural element 2 flat strip 3 fold line 4 fold line
6 fold line 7 flat part 8 flat part 9 flat part flat part u structural element 12 structural element 13 structural element structural element 10 16 structural element 17 structural element 18 structural element 19 strip flat part 15 21 flat part 22 flat part 23 fold line 24 fold line fold line 20 27 structural element 28 grate 29 structural element grate 31 grate 25 32 structural element 33 structural element grate 36 structural element 37 structural element 30 38 grate
39 flat strip 40 grate 41 structural element 42 structural element 44 structural element 45 strip 46 fold line 47 fold line 48 part 49 fold line 50 part 51 part 54 structural element 55 strip 5 65 strip 64 structural element 74 grate 94 grate 75 coil 75 coil 75” coil 757 coil 76 part 77 part 76 part 84 grate 85 coil 86 coil 87 part 88 part
94 grate 96 part 97 part 104 grate 105 coil 105 coil 105’ coll 105” coil 105” coil 106 part 107 part 14 grate element 115 air conditioner 120 structural element 121 unfolded strip 122 part 122 part 123 part 124 part 125 part 126 part 127 fold line 128 fold line 129 fold line 130 fold line 131 fold line A angle Al angle A2 angle A3 angle
B width C angle D angle E angle H height Hi height H2 height H3 height N number P pitch T thickness W width Wi width
Claims (13)
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL2025847A NL2025847B1 (en) | 2020-06-17 | 2020-06-17 | A grate comprising at least one structural element |
| EP21178821.1A EP3929370B1 (en) | 2020-06-17 | 2021-06-10 | Grate comprising structural element |
| PL21178821.1T PL3929370T3 (en) | 2020-06-17 | 2021-06-10 | Grate comprising structural element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL2025847A NL2025847B1 (en) | 2020-06-17 | 2020-06-17 | A grate comprising at least one structural element |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL2025847B1 true NL2025847B1 (en) | 2022-02-22 |
Family
ID=71895151
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL2025847A NL2025847B1 (en) | 2020-06-17 | 2020-06-17 | A grate comprising at least one structural element |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP3929370B1 (en) |
| NL (1) | NL2025847B1 (en) |
| PL (1) | PL3929370T3 (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US339732A (en) * | 1886-04-13 | Fence-rail | ||
| US2978077A (en) * | 1958-12-09 | 1961-04-04 | Hill Cross Company Inc | Three-dimensional structure and elements thereof |
| US4291515A (en) * | 1978-11-07 | 1981-09-29 | John Lysaght International Holdings S.A. | Structural elements |
| EP0318450A1 (en) * | 1987-11-25 | 1989-05-31 | Skanska Aktiebolag | An element for the construction of lattice webs for girders and like structural members, and a method for manufacturing such an element |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4491003A (en) * | 1981-06-23 | 1985-01-01 | Maryland Wire Belts, Inc. | Fabrication of helically-wound spirals for metal wire belts |
-
2020
- 2020-06-17 NL NL2025847A patent/NL2025847B1/en active
-
2021
- 2021-06-10 EP EP21178821.1A patent/EP3929370B1/en active Active
- 2021-06-10 PL PL21178821.1T patent/PL3929370T3/en unknown
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US339732A (en) * | 1886-04-13 | Fence-rail | ||
| US2978077A (en) * | 1958-12-09 | 1961-04-04 | Hill Cross Company Inc | Three-dimensional structure and elements thereof |
| US4291515A (en) * | 1978-11-07 | 1981-09-29 | John Lysaght International Holdings S.A. | Structural elements |
| EP0318450A1 (en) * | 1987-11-25 | 1989-05-31 | Skanska Aktiebolag | An element for the construction of lattice webs for girders and like structural members, and a method for manufacturing such an element |
Also Published As
| Publication number | Publication date |
|---|---|
| EP3929370B1 (en) | 2023-07-12 |
| EP3929370C0 (en) | 2023-07-12 |
| EP3929370A1 (en) | 2021-12-29 |
| PL3929370T3 (en) | 2023-12-04 |
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