• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    A method for interconnecting flashing members of a flashing element for use between a roof window and a surrounding roof structure as well as such a flashing element is disclosed. In the flashing element a first and a second flashing member are each provided with a hem defined by an edge section, which has been folded so that a hem pocket is present between the edge section and an adjacent section. A free edge of the edge section of the first flashing member is arranged in the hem pocket of the second flashing member, and a free edge of the edge section of the second flashing member is arranged in the hem pocket of the first flashing member thereby forming a lock seam. A local locking depression is formed at the seam, thereby deforming the material of both flashing members and preventing them from moving in relation to each other.
    公开号:DK201771029A1
    申请号:DKP201771029
    申请日:2017-12-27
    公开日:2019-07-10
    发明作者:Szczepaniak Marcin；Monnerup Henning；Kofoed Nielsen Per
    申请人:Vkr Holding A/S；
    IPC主号:
    专利说明:

    The present invention relates to a method for interconnecting flashing members of a flashing element for use between a roof window and a surrounding roof structure, where a first flashing member and a second flashing member are each provided with a hem, where a free edge of an edge section of the first flashing member extending along its hem fold is arranged in the hem pocket of the second flashing member, and a free edge of an edge section of the second flashing member extending along its hem fold is arranged in the hem pocket of the first flashing member thereby forming a seam where the two edge sections extend in substantially parallel planes. The invention further relates to a flashing element with such a seam.
    A seam of the type described above is known under many different names in different parts of the world, but in the following the term “lock seam” will be used.
    Flashing elements, where flashing members are interconnected by lock seams, are well known and lock seams are known for their structural simplicity, which allows an easy and reliable interconnection with excellent weather tightness. They, however, involve the use of considerable amounts of material. Not only does the overlap at the seam require material, the sheet material used for the flashing members also needs to have sufficient strength to allow the formation of hems, which will not be pulled open when the flashing element is in use, both during handling and under the influence of heavy winds when in the mounted position.
    It has been attempted to use other ways of interconnecting flashing members, but many of them have proven unsatisfactory. It has also been attempted to use one-piece flashing elements without seams, but these are less versatile and best suited for being made from polymers, many of which lack the weather resistance of aluminium, which is the material typically used for roof window flashings.
    It is therefore a first object of the invention to provide a method for interconnecting flashing members, which allows a reduction of the material consumption while maintaining the reliability and weather tightness of a traditional lock seam. Preferably the method should be suitable for use with flashDK 2017 71029 A1 ing members made from aluminium.
    A second object of the invention is to provide a flashing element for a roof window, which can be made using less material and preferably made from aluminium flashing members.
    In a first aspect of the invention the first object is achieved with a method, where a local locking depression is formed at the seam, thereby deforming the material of both the first flashing member and the second flashing member so that they are prevented from moving in relation to each other.
    The provision of a local depression at some point along the lock seam and the resulting local fixation of the flashing members in relation to each other has been seen to entail a considerable increase in the strength and stiffness of the seams. Moreover, the local locking of the two flashing members means that other sections of the slashing members are still able to move slightly in relation to each other, which will allow compensation for local deformation caused for example by temperature variations.
    In one embodiment, the depression is of a substantially circular or square shape when seen in a direction, which is perpendicular to the planes of the edge sections. Such a depression has a minimal influence on the design of the flashing element and can be made with simple tools. In other embodiments the depression can have an elongate shape, or two or more depressions may be provided at the same seam, particularly if the seam is very long and/or extends in a curved and/or bent plane. Regardless of the design, the depressed area of the seam, i.e. the total area of the one or more local depressions, should have a total length in the length direction of the seam constituting less than one fifth of the length of the seam.
    It is noted that the reference to the planes of the edge sections, both above and elsewhere in this text, is intended as a reference to the orientation of the edge sections in their undeformed state.
    The use of local depression is particularly advantageous when interconnecting flashing members of a relatively complex shape, such as for example a side flashing member adapted for extending along a side frame member of a roof window frame in a mounted state and a bottom flashing
    DK 2017 71029 A1 member adapted for extending along a bottom frame member of a roof window frame. In such flashing elements a part of the seam is often located in a place, which is hard to reach with a tool in the assembled state, and the local depression can then be made at an accessible area of the seam. The optimal location of the depression will depend on the size, shape and material of the flashing members and the intended use of the flashing element, but it may be determined by simple experiments.
    It is presently considered advantageous that the local depression(s) is/are made with a depth, which ensures that material on both sides of the hem fold in both flashing members is deformed. This entails a particularly strong fixation of the flashing members in relation to each other.
    If the intended use of the flashing element is such that one side of the seam will be hidden in the mounted state, the depression should preferably be made on this side. It is, however, also possible to use the depression as an indication of position on the flashing element, indicating for example where a screw or like fastener should be passed into the flashing element.
    The depression may be made by punching, which provides a relatively well-defined depression.
    Experiments have shown that a depression made with a tapered punch, having an engagement surface intended for coming into contact with the material of a flashing member and one or more side surfaces extending away from the engagement surface and a smaller diameter at the engagement surface, provides good results. The tapered punch used in the experiments was cone shaped with a circular cross-sectional shape, but it could also have a rectangular, triangular or alternative cross-sectional shape, and the cross-sectional shape can vary along the length of the punch. Likewise, it is to be understood that the engagement surface of the punch does not need to be plane, but could be concave, convex, or adapted for embossing a pattern into the surface of the flashing member, which it comes into direct contact with.
    In one embodiment, which has been found to be suitable for making bottom flashing elements adapted for use at the bottom of a roof window
    DK 2017 71029 A1 mounted in an inclined roof, the tapered punch has a circular cross-sectional shape where the smaller diameter is approximately 3 mm, the taper angle is 30-60 degrees, and the diameter at the section of the punch, which is at level with the exterior side of the flashing member at the end of the punching, is approximately 4 mm.
    A particularly good interconnection may be achieved by angling the punch in relation to the flashing member surface, which is first engaged by the punch. In such cases the punch is preferably inserted at an angle of 45-85 degrees, more preferred 70-80 degrees. An angled direction of insertion of the punch may also make it easier to access the section of the seam, where the depression is to be made.
    Even though it is presently preferred to make the depression by punching after the lock seam has been established, it is also possible to make it in other ways. It is even possible to provide each flashing member with depressions, which are brought into engagement with each other during establishment of the lock seam, in which case a snap-locking engagement between the flashing members may be achieved.
    The invention is not limited to the provision of a single seam, but also applies to flashing elements where two or more hems on one flashing member are interconnected to other flashing members by seams of the kind described above.
    In a second aspect of the invention the second object is achieved with a flashing element where the material of both the first flashing member and the second flashing member is deformed by a local locking depression at the seam, said depression preventing the two flashing members from moving in relation to each other.
    Particularly the invention lends itself to embodiments where the first flashing member is a side flashing member, adapted for extending along a side frame member of a roof window frame in a mounted state, and the second flashing member is a bottom flashing member adapted for extending along a bottom frame member of a roof window frame in the mounted state.
    Advantages and embodiments of the invention described with referDK 2017 71029 A1 ence to the first aspect above also applies to the second aspect.
    In the following the invention will be described in more details with reference to embodiment shown in the drawing, where
    Fig. 1 is a sketch of a bottom flashing member mounted between a roof window frame and a surrounding roof structure,
    Fig. 2 is a schematic drawing of another embodiment showing the detail marked II in Fig. 1 from the direction marked by the arrow,
    Fig. 3 shows the detail marked III in Fig. 2, but slightly more from above,
    Fig. 4 shows the detail marked III in Fig. 2 from the direction marked by the arrow,
    Fig. 5 shows a cross-section along the line V-V in Fig. 2, but not showing the skirt member,
    Fig. 6 shows a cross-section corresponding to the uppermost half of Fig. 5, but showing a different embodiment of the side flashing member,
    Fig. 7 is a schematic sketch of a depression in a lock seam according to the invention,
    Fig. 8 corresponds to Fig. 6 but showing a different embodiment of the invention,
    Fig. 9 corresponds to Fig. 7 but showing the embodiment in Fig. 8,
    Fig. 10 is a photo corresponding substantially to Fig. 3 but showing a different embodiment of the invention from a slightly different angle, and
    Fig. 11 shows different embodiments of depressions seen from the direction indicated by the arrow XI in Figs 8 and 9.
    A bottom flashing element comprising a first flashing member 1 in the form of a bottom flashing member, second flashing members 2 in the form of side flashing members, and a third flashing member 3 in the form of a skirt member is shown in Fig. 1 covering the gap between the bottom member of the frame 4 a roof window and a surrounding roof structure 5.
    In the following, reference will be made to such a bottom flashing element in order to illustrate the invention, but the skilled person will understand that the invention may also be used on other flashing elements of a flashing
    DK 2017 71029 A1 assembly. Not least on top flashing elements, which often have strong structural resemblance to the bottom flashing element shown in Fig. 1.
    Turning now to Fig. 2, 3, and 4 corresponding to the detail marked II in Fig. 1, it is seen how a bottom flashing element 1 is connected to a side flashing member 2 in a lock seam 6.
    Each of the flashing members 1, 2 is provided with a hem defined by an edge section 11, 21, which has been folded along a hem fold line 12, 22 so that a hem pocket is present between the edge section and an adjacent section 13, 23 of the flashing member. In the lock seam 6 seam a free edge 14 of the edge section 11 of the first flashing member 1 extending along its hem fold 12 is located in the hem pocket of the second flashing member 2, and a free edge 24 of the edge section 21 of the second flashing member 2 extending along its hem fold 22 is located in the hem pocket of the first flashing member 1, so that the two edge sections 11,21 extend in substantially parallel planes.
    In order to strengthen the joint, a local locking depression 61 is formed at the seam on the interior side, which faces the roof window frame 4 in the mounted state.
    As is seen in Fig. 5 the depression 61 has deformed all four layers in the seam, thereby deforming both edge sections 11, 21 as well as both adjacent sections 13, 23 so that the first flashing member and the second flashing member are locally prevented from moving in relation to each other. Here the depression has resulted in a slight displacement of the material of the adjacent section 23 of the second flashing member, which faces the exterior in the mounted state, so that a small projection 62 has been formed on the exterior side of the seam 6. It is, however, not a requirement that all layers of the seam are deformed and the projection on the exterior side may be undesirable for aesthetical reasons or because it takes up space.
    Fig. 6 shows a different embodiment where all four layers are deformed by the depression 61, but where the shape of the exterior side is unaffected. In addition, the side flashing member 2 is of a different design.
    The depression 61 in Fig. 6 is shown in cross-section in Fig. 7. As
    DK 2017 71029 A1 may be seen, the depression is tapered with a smaller diameter D at the bottom of the depression and side surfaces extending at an angle A of approximately 12 degrees in relation to symmetry axis S. The symmetry axis, which is also the direction P of insertion of the punch (not shown) used for the formation of the depression, is not perpendicular to the interior surface of adjacent section 13 of the first flashing member, but inclined at an angle B of approximately 14 degrees, corresponding to an angling of the punch in relation to the flashing member surface, which is first engaged by the punch of 76 degrees.
    A different embodiment of the invention is shown in Figs 8 and 9. In comparison to the embodiment in Figs 6 and 7 the angle A is smaller, here about 7 degrees, but the angling of the symmetry axis represented by angle B is the same. Furthermore, the depression 61 is considerably deeper so that both the edge sections 11, 21 and adjacent sections 13, 23 of both flashing members 1, 2 are considerably deformed. This provides a very reliable interconnection of the flashing members but also involves the risk of rupturing the material, which will particularly be undesirable in the adjacent section 23 of the side flashing member, which forms the exterior surface of the flashing element.
    In order to achieve a plane exterior surface without a surface projection 62 as the one shown in Fig. 5, the flashing member forming the exterior surface is arranged against a plane surface when making the depression. Alternatively, if wishing a projection on the exterior surface, the flashing member forming the exterior surface by be arranged against a surface having the desired shape. Regardless if a projection is wanted or not, it may be advantageous to provide backing(s) or support(s) adapted for retaining other parts of the flashing member(s) during the deformation process.
    A still further embodiment of the invention is shown in Fig. 10. Here the depression has a rounded bowl-shape without sharp corners at the bottom, but otherwise it resembles that in Fig. 8 and 9.
    The shape of the depression may vary depending on numerous factors such as the material(s) used for the flashing members, the material thickDK 2017 71029 A1 ness, and the intended use of the flashing element. Fig. 11 shows a number of different embodiments, where those in details A, B, and C are relatively simple and substantially symmetrical, while those in details D, E, and F are elongate and intended to be arranged with their longer axis extending along the length L of the seam. The depression with the circular shape in detail A is structurally simple and potentially allows a slight rotation of the two flashing members in relation to each other, which is prevented or at least hindered with the other embodiments.
    Details G and H show embodiments, where several smaller depressions are arranged in groups, either forming a row intended to extend along the length L of the seam or being off-set in relation to each other in order to provide alternative properties with respect to stiffness etc.
    The last embodiment in detail I is provided with embossed letters inside the depression and having a complex shape designed to serve as an indication of origin, model, size, or the like. Depending on the overall design of the flashing element, it may be advantageous to provide this kind of depression on a surface, which is visible in the mounted position of the flashing element.
    The depressions in Fig. 11 is shown only by their overall shape and it is to be understood that they may have a rounded shape like in Fig. 10 and/or be cone-shaped like in Fig. 7.
    权利要求:
    Claims (10)
    [1] PATENT CLAIMS
    1. A method for interconnecting flashing members of a flashing element for use between a roof window and a surrounding roof structure, where a first flashing member and a second flashing member are each provided with a hem, said hem being defined by an edge section of the flashing member, which has been folded along a hem fold line so that a hem pocket is present between the edge section and an adjacent section of the flashing member, and where a free edge of the edge section of the first flashing member extending along its hem fold is arranged in the hem pocket of the second flashing member, and a free edge of the edge section of the second flashing member extending along its hem fold is arranged in the hem pocket of the first flashing member thereby forming a seam where the two edge sections extend in substantially parallel planes, c h a r a c t e r i z e d in that a local locking depression is formed at the seam, thereby deforming the material of both the first flashing member and the second flashing member so that they are prevented from moving in relation to each other.
    [2] 2. A method according to claim 1, where the depression is of a substantially circular or square shape when seen in a direction, which is perpendicular to the planes of the edge sections in their un-deformed state.
    [3] 3. A method according to claim 1 or 2, where the local depression is made with a depth, which ensures that material on both sides of the hem fold in both flashing members is deformed.
    [4] 4. A method according to claim one or more of the preceding claims, where the depression is made by punching.
    [5] 5. A method according to claim 4, where a tapered punch is used, where said punch having an engagement surface intended for coming into contact with the material of a flashing member and one or more side surfaces extending away from the engagement surface, and where said punch has a smaller diameter at the engagement surface.
    [6] 6. A method according to claim 5, where the smaller diameter of the
    DK 2017 71029 A1 tapered punch is approximately 3 mm, where the taper angle is 30-60 degrees, and where the tapered punch has a diameter of approximately 4 mm at a distance from the engagement surface.
    [7] 7. A method according to one or more of the preceding claims, where the punch is inserted at an angle of 45-80 degrees, more preferred 70-80 degrees, to the flashing member surface, which is first engaged by the punch.
    [8] 8. A method according to one or more of the preceding claims, where two or more hems on one flashing member are interconnected to other flashing members by seams of the kind described in claim 1.
    [9] 9. A flashing element comprising a first flashing member and a second flashing member each provided with a hem, said hem being defined by an edge section of the flashing member, which has been folded along a hem fold line so that a hem pocket is present between the edge section and an adjacent section of the flashing member, where the first flashing member and the second flashing member are interconnected in a seam, where a free edge of the edge section of the first flashing member extending along its hem fold is located in the hem pocket of the second flashing member, and a free edge of the edge section of the second flashing member extending along its hem fold is located in the hem pocket of the first flashing member, and where the two edge sections extend in substantially parallel planes, c h a r a c t e r i z e d in that the material of both the first flashing member and the second flashing member is deformed by a local locking depression at the seam, said depression preventing the two flashing members from moving in relation to each other.
    [10] 10. A flashing element according to claim 9, where the first flashing member is a side flashing member adapted for extending along a side frame member of a roof window frame in a mounted state and the second flashing member is a bottom flashing member adapted for extending along a bottom frame member of a roof window frame in the mounted state.
    类似技术:
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    同族专利:
    公开号 | 公开日
    HUE055270T2|2021-11-29|
    DK179824B1|2019-07-15|
    EP3517229B1|2021-05-19|
    PL3517229T3|2021-11-22|
    EP3517229A1|2019-07-31|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US425002A|1890-04-08|Half to harlan p |
    CA648737A|1962-09-18|R. Stitt James|Fire retardant wall construction|
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    BE612349A|1961-01-05|
    JPS61148427U|1985-03-06|1986-09-12|
    JPH0763773B2|1986-10-18|1995-07-12|奥地建産株式会社|Manufacturing method of goby joint pipe|
    DE3904174A1|1989-02-11|1990-08-16|Handel & Mack Gmbh & Co Kg|Roof penetration surround|
    JPH03189017A|1989-12-16|1991-08-19|Mitsubishi Electric Corp|Binding method of seam bending caulking|
    US20060265970A1|2005-04-27|2006-11-30|Hoffman Kenneth S|Roof flashing strip and method of production|
    DE102014007702A1|2014-05-22|2015-11-26|Roto Frank Ag|Deck arrangement for a rooftop and roof with built-in roof windows and a Eindeckanordnung|
    法律状态:
    2019-07-10| PAT| Application published|Effective date: 20190628 |
    2019-07-15| PME| Patent granted|Effective date: 20190715 |
    优先权:
    申请号 | 申请日 | 专利标题
    DKPA201771029A|DK179824B1|2017-12-27|2017-12-27|A method for interconnecting flashing members and a flashing element with a seam|DKPA201771029A| DK179824B1|2017-12-27|2017-12-27|A method for interconnecting flashing members and a flashing element with a seam|
    PL18214837T| PL3517229T3|2017-12-27|2018-12-20|A method for interconnecting flashing members and a flashing element with a seam|
    EP18214837.9A| EP3517229B1|2017-12-27|2018-12-20|A method for interconnecting flashing members and a flashing element with a seam|
    HUE18214837A| HUE055270T2|2017-12-27|2018-12-20|A method for interconnecting flashing members and a flashing element with a seam|
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