EP2639380B1 - A bracket and method for mounting said bracket - Google Patents
A bracket and method for mounting said bracket Download PDFInfo
- Publication number
- EP2639380B1 EP2639380B1 EP13158899.8A EP13158899A EP2639380B1 EP 2639380 B1 EP2639380 B1 EP 2639380B1 EP 13158899 A EP13158899 A EP 13158899A EP 2639380 B1 EP2639380 B1 EP 2639380B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- bracket
- angle
- roof
- sheet
- sheet elements
- 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.)
- Not-in-force
Links
- 238000000034 method Methods 0.000 title claims description 6
- 238000005452 bending Methods 0.000 claims description 14
- 238000000926 separation method Methods 0.000 claims description 12
- 230000014759 maintenance of location Effects 0.000 claims description 8
- 238000003780 insertion Methods 0.000 claims description 6
- 230000037431 insertion Effects 0.000 claims description 6
- 238000010276 construction Methods 0.000 description 8
- 239000000463 material Substances 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- 239000004411 aluminium Substances 0.000 description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000011122 softwood Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000010257 thawing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
- E04D13/00—Special arrangements or devices in connection with roof coverings; Protection against birds; Roof drainage ; Sky-lights
- E04D13/10—Snow traps ; Removing snow from roofs; Snow melters
Definitions
- the invention relates to a bracket for mounting on roofs, said bracket being made of sheeting and comprising a body comprising a fastening means at one end of the body for fastening the bracket to a roof part and a support part at the other end of the body, said fastening means comprising at least one sheet element made in one continuous piece with the body along a first side.
- EP1201844 discloses a different method. It discloses a snow trap made in sheeting and comprising an oblong body with a hook at one end of the body gripping a roof plate and a support part at the opposite end of the oblong body for catching the snow.
- the construction in the patent in question has the disadvantage that the hook takes up a lot of space during transportation of the snow traps, and during mounting of the snow trap, it is necessary to lift a roof plate in order for the hook to be inserted underneath the overlying roof plate and to grip the upper edge of the roof plate lying below the lifted roof plate. Not only is this a difficult operation but only the roof plate, on which the snow trap is mounted, is being subjected to pressure when the snow is caught by the support part. Further, the support part is bent as an extension to the oblong body and will necessarily have to be bent upwards in a triangular shape, seen from the side, in order to have sufficient strength for the pressure of the snow.
- JP 2560115 also discloses a snow trap comprising a long, narrow surface part with a part protruding from the oblong body. This plate part is used for positioning the snow trap in relation to the individual roof plate as said plate part grips the edge of the roof plate. Further, the snow trap comprises fastening means in the form of holes in the body so that the snow trap is screwed onto the roof plates through said holes.
- the snow trap comprises fastening means in the form of holes in the body so that the snow trap is screwed onto the roof plates through said holes.
- the support part catching the snow is bent upwards in an L-shaped profile, seen from the side, and thus great strength is required of the chosen material or alternatively other strength-increasing measures in order for this upwards-bended edge to withstand the pressure from the snow.
- the roof plate, to which the snow trap is secured is subjected to pressure.
- Brackets are known from JP2002004517-A and DE202007003060- U1 with bend lines on lateral sheet elements, while US401202-A and EP0 881339-A1 disclose a bracket according to the preamble of claim 1.
- bracket without the disadvantages of the known products, and which constitutes an alternative to these and may be used for mounting of solar cells, roof ladders, snow traps or the like on roofs.
- a suitable unit may be connected with the bracket.
- the bracket may be placed at already laid roofs without having to lift the roof plates off and/or having to screw the bracket onto the roof plates, the latter causing leaks.
- the sheet elements of the bracket are bent outwards in a suitable angle of approx. 20-30 degrees, preferably approx. 25 degrees, in relation to the plane of the body and as the sheet elements are resiliently connected with the rest of the snow trap, the part of the bracket comprising the sheet elements may be pushed underneath a roof plate, whereby the sheet elements are pushed against the body so that they are substantially level with said body. As soon as the elements are pushed so far in so as to be free of the underlying roof plate, they slip into the pre-bent position.
- bracket is pulled in the opposite direction of the insertion direction, whereby the fourth side on the protruding sheet elements of the bracket grips a batten and sticks in it. Thereby, the bracket is tightly secured, and the force is distributed over the batten and not over the fragile roof plates.
- Various units may be attached to the bracket, which is now secured, said units being e.g. bars which are secured to the bracket and which may constitute steps.
- two brackets being at the same horizontal level and at least one bar are now secured to the now two brackets.
- a bracket pair is subsequently mounted at a suitable step distance to the first brackets, and now a new step is established and so on until the required ladder is provided.
- brackets will be mounted along the entire roof edge in the same horizontal level with suitable distance between them and at least one bar to be secured to all the brackets, typically by going through holes in the bracket. Said bar will constitute the snow trapping part. Often, a plurality of bars will be used in order to obtain sufficient snow catching.
- bracket As the sheet elements are arranged symmetrically around the longitudinal axis of the body, it is achieved that the bracket abuts the batten in a very stable way as the two legs ensure that the bracket cannot tip. This makes the bracket very suitable for the above uses.
- the bracket may also be used for mounting other elements on a roof, such as signs, solar cells etc.
- resilient By resilient is meant that the sheet elements, when bent in the appropriate angle, can be pushed inwards substantially without being deformed plastically, so that they are substantially surface-coinciding with the body, from which they protrude, and that the elastic force is of such nature that the sheet elements flick out to the pre-bent angle when the sheet elements are free again.
- the elastic force is provided with a suitable force so as to avoid the plastic deformation.
- the roof part is preferably a batten.
- the angle is open in the direction of the support part.
- An advantageous embodiment of the invention comprises that the separation element comprises a slit or a slot.
- An advantageous embodiment of the invention comprises that the bracket comprises a second bend line/imprint, said second bend line/imprint being provided on each sheet element perpendicular on the central axis of the body and at a distance from the first side, and that a second angle is provided by bending at said second bend line/imprint.
- An advantageous embodiment of the invention comprises that the second angle is provided by bending in the opposite direction of the bending direction for providing the first angle.
- An advantageous embodiment comprises that the separation element comprises a slit or a slot having a width of 1-8 mm measured between the longitudinal delimiting sides of the body and the closest longitudinal sides of the respective sheet elements.
- An advantageous embodiment of the invention comprises that the separation element ends in a curvature radius of 1-4 mm in the area at the first side.
- the separation element is just a cutting line between the body and the respective sheet elements, it is important that the area between the sheet elements and the rest of the bracket does not have notch effect. By ensuring that the area ends in a curvature and preferably with a curvature radius of 2mm, it is ensured that no tearing up of the sheet elements will take place in this area.
- An advantageous embodiment of the snow trap comprises that the fourth side comprises retention elements.
- the retention elements may be shaped as saw teeth sinking its sharp teeth into the soft wood. They may be shaped as a sharp edge, they may also be constituted by a speary shape or one or more awls boring into an underlying batten.
- An advantageous embodiment of the invention comprises that the separation element ends at a first and second area placed at each their side of the longitudinal sides of the body, said end having a curvature radius of 1-3 mm, preferably 2 mm.
- An advantageous embodiment of the invention comprises that the first sides are placed at a distance from the end of the separation element in the direction of the fourth side, said first sides comprising a bend imprint.
- An advantageous embodiment of the invention comprises that the support part is made in one piece with the body and in sheeting, said support part comprising at least one part protruding in relation to the longitudinal sides of the body, and that the bracket comprises a bend line between the body and the protruding part as well as at least one bore in the protruding part for reception of a unit.
- the surface of the support part facing the body in connection with the bending forms a substantially right angle with the surface of the body.
- the surface itself extends parallel with the longitudinal axis of the body, thus achieving great construction strength even when using a relatively weak sheet material like aluminium.
- a force on the bended part will have a line of application parallel with the bend line and not perpendicular to the bend line as in the initially mentioned constructions.
- this renders it possible to choose a light material, such as aluminium, making the snow traps easy to transport, and at the same time, aluminium is a rust-resistant material.
- the protruding part may also be to wings placed opposite each other.
- a unit e.g.
- the support part and the body are made in one continuous piece, e.g. by stamping out the entire bracket in suitable sheeting.
- An advantageous embodiment of the invention comprises that the unit comprises at least one transverse bar for providing a roof ladder rung or a snow trap.
- An advantageous embodiment of the invention comprises that the support part and the surface of the body, when facing each other, form a third angle, said angle being preferably 90-100 degrees, and that the first angle is set between a first surface of the body and the sheet elements, and that the third angle is set between a second surface of the body, which is opposite the first surface, and the support part, said angles turning opposite of each other.
- An advantageous embodiment of the invention comprises that the sheeting comprises an aluminium alloy.
- An advantageous embodiment of the invention comprises the fastening means is tongue-shaped or corrugated.
- An advantageous embodiment of the invention comprises that the abutment against the roof part includes contact between the roof part and the fourth side.
- the invention also comprises a method for mounting of a bracket (1) according to any of the preceding claims on a roof, where the sheet elements (7) of the bracket (1) are bent outwards along their first side (8) for providing a first angle, and that its fourth sides are brought into abutment with the roof part.
- An advantageous embodiment of the invention comprises that the support part/support parts are bent upwards in a third angle in the opposite direction of the first angle that the body is inserted between an upper and a lower roof plate with the sheet elements pointing towards the lower roof plate, and that the bracket is pulled in the opposite direction of the insertion direction when the sheet elements are free of the roof plate, whereby the fourth side of the sheet elements grips a underlying batten.
- Figs. 1A , 1B and Fig. 2 show an embodiment of a bracket 1 according to the invention made in sheeting with a thickness of typically 4-5 mm and e.g. in an aluminium alloy.
- the bracket 1 comprises an oblong body 2 shaped in sheeting. At one end 4, said body is shaped slightly curved. At a distance from the delimiting surface of the one end 4, a fastening means 3 is provided in the form of sheet elements 7 shaped substantially as a tongue-like part made in one continuous piece with the body 2, and so that two slits 12 are cut/stamped so that the slit 12 delimits the body 2 at two sides.
- the sheet elements are resiliently connected with the elongated body 2 at each their first side 8, where a bend imprint 17 in the form of a groove is typically arranged, and the sheet elements 7 are placed symmetrically around the longitudinal axis of the body. From each first side 8, two parallel or converging sides extend, i.e. the second 9 and third sides 10, which end and are connected at the fourth side 11, said fourth side 11 typically comprising retention elements 15, e.g. in the form that the edge of the fourth side is shaped with saw teeth.
- the sheet elements 7 are partly stamped out parts of the actual body 2, and which, prior to use, are bent outwards in an angle so that the surfaces 13 of the sheet elements 7 form an angle of 20-30 degrees, preferably 25 degrees, with the one surface 14 of the actual body 2; the first surface 28.
- the slits 12 have an extent corresponding to the longitudinal extent of the third side and are delimited by this. Thus, the slits end in a first area 30 and in a second area 31 at each their side of the body 2 and at a distance of 2-4 mm from the bend imprint 17.
- the bend imprint 17 ensures that there is no deformation/off-centre bending of the sheet element 7 when bending the sheet elements 7, but that this is done precisely at the bend imprint/groove and without the actual body 2 getting cracks. This is due to the extent of the slit and that said slit ends with a radius of curvature 16, said radius of curvature being typically 1-4 mm, preferably 2 mm.
- the actual slit width is 1-8 mm, preferably 2 mm.
- a support part 6 for reception of a unit is provided at the second end 24 of the body 2 opposite the sheet elements 7.
- the support part 6 is shaped as a protruding part 18 and as said, is stamped out of the sheeting. Subsequently, the protruding part is bent upwards so that an angle of 90-100 degrees is provided between the plane surface of the protruding part an and the second plane surface 14 of the body 2, i.e. its second surface 29.
- the protruding part is bent so that its surface runs parallel with the longitudinal axis of the body 2, great construction strength is achieved as a force on the protruding part 18 will run parallel to the bend line 19 of said protruding part 18. The force is generated in connection with the abutment of the bracket against a roof and when it is used for securing the unit 22.
- the actual protruding part 18 comprises 1-2 bores 23, potentially more, for reception of the holding unit 22, typically in the form of tubes.
- the longitudinal axis of said tubes forms an angle of approx. 90 degrees with the longitudinal axis of the body 2.
- Figs. 3A-3C show the brackets during mounting in that the resilient sheet elements 7 are bent outwards at the above-mentioned angle of approx. 25 degrees, and that the protruding part 18 is also bent upwards in the opposite direction of the bending of the resilient parts and at an angle of 90-100 degrees.
- one end of the bracket 1 is inserted below a roof plate, and the underlying roof plate will push the resilient part upwards in the direction of the overlying roof plate and in principle lift it, thus facilitating insertion.
- the angle between the body and the sheet element is open in the direction opposite the insertion direction.
- Fig. 3B shows the bracket having been brought to its final position as the sheet elements 7 flick outwards as soon as they are free of the underlying roof plate 26. Now, the bracket is being pulled in the opposite direction of the insertion direction, whereby the fourth sides 11 of the sheet elements 7 bore into the underlying batten 5, said fourth sides 11 preferably comprising the above-mentioned retention elements 15. Thereby, a good placement of the bracket is ensured as well as a good distribution of force.
- Fig. 3C shows the bracket in use as a snow trap, where the snow traps holds back the snow in that a holding unit 22 in the form of tubes is provided in the bores 23 of the protruding part 18.
- Figs. 4A and 4B show a perspective view of a set snow traps mounted on a roof, where the roof plates 26 shown in Fig. 4A differ from the roof plates 26 shown in Fig. 4B .
- This is in order to demonstrate that the snow trap may be used regardless of the type of roof plates as the essential thing is that there are transverse battens underneath the roof plates into which the sheet elements may bore and ensure fixation of the snow trap.
- the snow trap is placed so that it is mounted in the same row of roof plates so that the holding unit 22 in the form of tubes may be continuously inserted through all the bores 23 in the protruding part of the show trap.
- the snow trap is shown with just one protruding part 18, but may comprise to protruding parts placed opposite each other which would typically be the case in connection with the snow traps which are to be placed at the end of the roof, i.e. along the right and left edges of the roof.
- Fig. 5A shows the bracket according to the invention for providing steps on a roof
- Fig. 5B shows the step shown in Fig. 5A mounted on a roof
- Two brackets 1 are placed at the same horizontal level on a roof 25 and spaced with a distance being suitable for a foot step, i.e. approx. 30-40 cm between them.
- a holding unit 22 in the form of two parallel tubes is pushed through the two bores 23 of the two upwards-bended protruding parts 18.
- a ladder rung is provided which is mounted on the roof 25 as shown in Fig. 5B .
- the fourth side of the sheet elements 7 of the brackets 1 bore into the same batten with the retention elements 15 belonging to the fourth side.
- the body 2 is placed on the top surface of the roof plate 25 and helps divide the pressure, while the retention elements 15 ensure that the ladder rung does not slide in relation to the sloping roof part.
- Fig. 7 shows a bracket according to the invention differing from the previously shown bracket in that the two sheet elements comprise an additional bend imprint, i.e. a second bend line/imprint 32.
- the second bend line/imprint 32 is provided on each sheet element 7 perpendicular to the central axis of the body 2 and at a distance to the first side 8.
- a second angle is provided by bending at second imprint/bend line 32. The bending at this line is in the opposite direction of the previously described bend imprint/groove 17.
- a Z-shaped/step-like distance is achieved between the one end 4 of the bracket and the fourth side 11 so that there is room for a relatively thick roof plate.
- the support part 6 comprises three bores 23 so that it is possible to insert three parallel bars into the support part. This is advantageous when large amounts of snow/ice are released simultaneously e.g. when snow/ice is released from the surface of solar cells.
- Fig. 6 shows steps constructed as described in Figs. 5A and B , and where the steps 22 in the form of tubes are placed at the same vertical level, whereby a roof ladder 20 is provided.
- the distance between the steps is approx. 20-40 cm depending on the inclination of the roof and on the distance between the underlying battens. The more weight on the brackets, the more they bore into the underlying batten.
- the mounting takes place in that the sheet elements 7, which thereby constitute the fixation part, are bent upwards to the angle of approx. 25 degrees in the pre-imprinted grooves/bend imprints 17 which have a length of 15-30 mm depending on the roof type.
- the bracket is led up through the roof plates and clicks down due to its resilient construction and locks around the batten.
- One or two of the longitudinal tubes are mounted, said tubes constituting holdings units 22 and which are secured by the protruding part/the tube holders. If the bracket is used as snow trap, the double tube holders are mounted at each side of the snow trap bracket in end joints, whereas tube holders are mounted left/right in middle brackets in order to prevent sliding to the side.
- the actual tubes are fixated to the snow trap bracket by means of machine screws. Due to the chosen dimension, preferably 5 mm machine screws are used.
- the bracket is made by stamping out the form in stainless sheeting with a thickness of 2 mm.
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Roof Covering Using Slabs Or Stiff Sheets (AREA)
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
Description
- The invention relates to a bracket for mounting on roofs, said bracket being made of sheeting and comprising a body comprising a fastening means at one end of the body for fastening the bracket to a roof part and a support part at the other end of the body, said fastening means comprising at least one sheet element made in one continuous piece with the body along a first side.
- In connection with mounting of devices on roofs, various mounting techniques are used depending on the task to be performed. Typically, mounting of a roof ladder takes place by mounting of a roof rail across the roof ridge to which the ladder is secured. Alternatively, steps are secured directly in the roofing at the risk that the roof tiles break when the step is bolted to the roof plate.
- In connection with mounting of solar cells on a roof, individual solutions are often constructed, typically in the form of a steel frame which is secured to the roof construction and to which the solar cell is mounted. This solution lacks flexibility and does not allow subsequent moving of the solar cell without great effort.
- Likewise, there are various systems of mounting snow traps where the securing is normally also done by drilling in the roof construction itself in order to establish the mounting.
- However,
EP1201844 discloses a different method. It discloses a snow trap made in sheeting and comprising an oblong body with a hook at one end of the body gripping a roof plate and a support part at the opposite end of the oblong body for catching the snow. The construction in the patent in question has the disadvantage that the hook takes up a lot of space during transportation of the snow traps, and during mounting of the snow trap, it is necessary to lift a roof plate in order for the hook to be inserted underneath the overlying roof plate and to grip the upper edge of the roof plate lying below the lifted roof plate. Not only is this a difficult operation but only the roof plate, on which the snow trap is mounted, is being subjected to pressure when the snow is caught by the support part. Further, the support part is bent as an extension to the oblong body and will necessarily have to be bent upwards in a triangular shape, seen from the side, in order to have sufficient strength for the pressure of the snow. -
JP 2560115 - Other brackets are known from
JP2002004517-A DE202007003060- U1 with bend lines on lateral sheet elements, whileUS401202-A andEP0 881339-A1 disclose a bracket according to the preamble ofclaim 1. - It is the object of the present invention to provide a bracket without the disadvantages of the known products, and which constitutes an alternative to these and may be used for mounting of solar cells, roof ladders, snow traps or the like on roofs. Depending on the use, a suitable unit may be connected with the bracket.
- Said object is achieved by a bracket according to
claim 1. - By such construction, the bracket may be placed at already laid roofs without having to lift the roof plates off and/or having to screw the bracket onto the roof plates, the latter causing leaks. As the sheet elements of the bracket are bent outwards in a suitable angle of approx. 20-30 degrees, preferably approx. 25 degrees, in relation to the plane of the body and as the sheet elements are resiliently connected with the rest of the snow trap, the part of the bracket comprising the sheet elements may be pushed underneath a roof plate, whereby the sheet elements are pushed against the body so that they are substantially level with said body. As soon as the elements are pushed so far in so as to be free of the underlying roof plate, they slip into the pre-bent position. Now, the bracket is pulled in the opposite direction of the insertion direction, whereby the fourth side on the protruding sheet elements of the bracket grips a batten and sticks in it. Thereby, the bracket is tightly secured, and the force is distributed over the batten and not over the fragile roof plates. Various units may be attached to the bracket, which is now secured, said units being e.g. bars which are secured to the bracket and which may constitute steps. In this case, two brackets being at the same horizontal level and at least one bar are now secured to the now two brackets. Now, a bracket pair is subsequently mounted at a suitable step distance to the first brackets, and now a new step is established and so on until the required ladder is provided.
- If the brackets are to be used as snow trap, brackets will be mounted along the entire roof edge in the same horizontal level with suitable distance between them and at least one bar to be secured to all the brackets, typically by going through holes in the bracket. Said bar will constitute the snow trapping part. Often, a plurality of bars will be used in order to obtain sufficient snow catching.
- As the sheet elements are arranged symmetrically around the longitudinal axis of the body, it is achieved that the bracket abuts the batten in a very stable way as the two legs ensure that the bracket cannot tip. This makes the bracket very suitable for the above uses. The bracket may also be used for mounting other elements on a roof, such as signs, solar cells etc.
- By resilient is meant that the sheet elements, when bent in the appropriate angle, can be pushed inwards substantially without being deformed plastically, so that they are substantially surface-coinciding with the body, from which they protrude, and that the elastic force is of such nature that the sheet elements flick out to the pre-bent angle when the sheet elements are free again. The elastic force is provided with a suitable force so as to avoid the plastic deformation. The roof part is preferably a batten. The angle is open in the direction of the support part.
- An advantageous embodiment of the invention comprises that the separation element comprises a slit or a slot.
- An advantageous embodiment of the invention comprises that the bracket comprises a second bend line/imprint, said second bend line/imprint being provided on each sheet element perpendicular on the central axis of the body and at a distance from the first side, and that a second angle is provided by bending at said second bend line/imprint.
- This is advantageous when the roof plate, beneath which the bracket is pushed, has a considerable thickness as it therefore necessary to provide space for said thickness.
- An advantageous embodiment of the invention comprises that the second angle is provided by bending in the opposite direction of the bending direction for providing the first angle.
- An advantageous embodiment comprises that the separation element comprises a slit or a slot having a width of 1-8 mm measured between the longitudinal delimiting sides of the body and the closest longitudinal sides of the respective sheet elements.
- Thereby, an advantageous form is achieved, where the end of the slit in the area at the first side will not have notch effect due to the width of the slit thus reducing the risk of the sheet elements being torn up.
- An advantageous embodiment of the invention comprises that the separation element ends in a curvature radius of 1-4 mm in the area at the first side.
- In case the separation element is just a cutting line between the body and the respective sheet elements, it is important that the area between the sheet elements and the rest of the bracket does not have notch effect. By ensuring that the area ends in a curvature and preferably with a curvature radius of 2mm, it is ensured that no tearing up of the sheet elements will take place in this area.
- An advantageous embodiment of the snow trap comprises that the fourth side comprises retention elements.
- Thereby, it is achieved that the element fastens well to the underlying batten. The retention elements may be shaped as saw teeth sinking its sharp teeth into the soft wood. They may be shaped as a sharp edge, they may also be constituted by a speary shape or one or more awls boring into an underlying batten.
- An advantageous embodiment of the invention comprises that the separation element ends at a first and second area placed at each their side of the longitudinal sides of the body, said end having a curvature radius of 1-3 mm, preferably 2 mm.
- An advantageous embodiment of the invention comprises that the first sides are placed at a distance from the end of the separation element in the direction of the fourth side, said first sides comprising a bend imprint.
- Thereby, an unambiguous bending of the element is achieved without any risk that the angle is insufficiently and/or unevenly bent along the first side. Further, it counteracts notch effect.
- An advantageous embodiment of the invention comprises that the support part is made in one piece with the body and in sheeting, said support part comprising at least one part protruding in relation to the longitudinal sides of the body, and that the bracket comprises a bend line between the body and the protruding part as well as at least one bore in the protruding part for reception of a unit.
- Thereby, it is achieved that the surface of the support part facing the body in connection with the bending forms a substantially right angle with the surface of the body. The surface itself extends parallel with the longitudinal axis of the body, thus achieving great construction strength even when using a relatively weak sheet material like aluminium. This is due to the fact that a force on the bended part will have a line of application parallel with the bend line and not perpendicular to the bend line as in the initially mentioned constructions. As said, this renders it possible to choose a light material, such as aluminium, making the snow traps easy to transport, and at the same time, aluminium is a rust-resistant material. However, the protruding part may also be to wings placed opposite each other. A unit, e.g. in the form of one or more tubes, is mounted through the holes in the wings. The tubes run continuously through all the brackets mounted in the same horizontal level on the roof. Preferably, the support part and the body are made in one continuous piece, e.g. by stamping out the entire bracket in suitable sheeting.
- An advantageous embodiment of the invention comprises that the unit comprises at least one transverse bar for providing a roof ladder rung or a snow trap.
- An advantageous embodiment of the invention comprises that the support part and the surface of the body, when facing each other, form a third angle, said angle being preferably 90-100 degrees, and that the first angle is set between a first surface of the body and the sheet elements, and that the third angle is set between a second surface of the body, which is opposite the first surface, and the support part, said angles turning opposite of each other.
- An advantageous embodiment of the invention comprises that the sheeting comprises an aluminium alloy.
- An advantageous embodiment of the invention comprises the fastening means is tongue-shaped or corrugated.
- An advantageous embodiment of the invention comprises that the connection between the sheet elements and the body is resilient and with a spring force
- An advantageous embodiment of the invention comprises that the abutment against the roof part includes contact between the roof part and the fourth side.
- The invention also comprises a method for mounting of a bracket (1) according to any of the preceding claims on a roof, where the sheet elements (7) of the bracket (1) are bent outwards along their first side (8) for providing a first angle, and that its fourth sides are brought into abutment with the roof part.
- An advantageous embodiment of the invention comprises that the support part/support parts are bent upwards in a third angle in the opposite direction of the first angle that the body is inserted between an upper and a lower roof plate with the sheet elements pointing towards the lower roof plate, and that the bracket is pulled in the opposite direction of the insertion direction when the sheet elements are free of the roof plate, whereby the fourth side of the sheet elements grips a underlying batten.
- The invention will be described in detail with reference to the drawings in which:
-
Fig. 1A shows a bracket according to the invention ready to be inserted beneath a roof plate. -
Fig. 1B shows the bracket according toFig. 1A stamped out in sheeting and before the bending for providing the protruding, resilient fastening means as well as the support part in upright position. -
Fig. 2 shows the bracket according toFigs. 1A and1B inserted beneath a roof plate and in abutment against a batten, shown from the underside of the roof. -
Fig. 3A shows the bracket according toFig. 1A inserted beneath a roof plate and shown from the side. -
Fig. 3B shows the bracket according toFig. 3A in its end position and with the resilient sheet part in abutment against a batten. -
Fig. 3C shows the bracket according toFig. 3B and its connection with an amount of snow on the roof. -
Figs. 4A and B show the bracket according to the invention used as a snow trap on a roof, with the roof plates inFig. 4A being different from the roof plates inFig. 4B . -
Fig. 5A shows the bracket according to the invention for providing a step on a roof. -
Fig. 5B shows the step according toFig. 5A mounted on a roof. -
Fig. 6 shows a roof ladder constructed by use of a bracket according to the invention. -
Fig. 7 shows a second embodiment of a bracket according to the invention. -
Figs. 1A ,1B andFig. 2 show an embodiment of abracket 1 according to the invention made in sheeting with a thickness of typically 4-5 mm and e.g. in an aluminium alloy. Thebracket 1 comprises anoblong body 2 shaped in sheeting. At oneend 4, said body is shaped slightly curved. At a distance from the delimiting surface of the oneend 4, a fastening means 3 is provided in the form ofsheet elements 7 shaped substantially as a tongue-like part made in one continuous piece with thebody 2, and so that twoslits 12 are cut/stamped so that theslit 12 delimits thebody 2 at two sides. The sheet elements are resiliently connected with theelongated body 2 at each theirfirst side 8, where abend imprint 17 in the form of a groove is typically arranged, and thesheet elements 7 are placed symmetrically around the longitudinal axis of the body. From eachfirst side 8, two parallel or converging sides extend, i.e. the second 9 andthird sides 10, which end and are connected at thefourth side 11, saidfourth side 11 typically comprisingretention elements 15, e.g. in the form that the edge of the fourth side is shaped with saw teeth. - Thus, the
sheet elements 7 are partly stamped out parts of theactual body 2, and which, prior to use, are bent outwards in an angle so that thesurfaces 13 of thesheet elements 7 form an angle of 20-30 degrees, preferably 25 degrees, with the onesurface 14 of theactual body 2; thefirst surface 28. Theslits 12 have an extent corresponding to the longitudinal extent of the third side and are delimited by this. Thus, the slits end in afirst area 30 and in asecond area 31 at each their side of thebody 2 and at a distance of 2-4 mm from thebend imprint 17. Thebend imprint 17 ensures that there is no deformation/off-centre bending of thesheet element 7 when bending thesheet elements 7, but that this is done precisely at the bend imprint/groove and without theactual body 2 getting cracks. This is due to the extent of the slit and that said slit ends with a radius ofcurvature 16, said radius of curvature being typically 1-4 mm, preferably 2 mm. The actual slit width is 1-8 mm, preferably 2 mm. - A
support part 6 for reception of a unit is provided at thesecond end 24 of thebody 2 opposite thesheet elements 7. Thesupport part 6 is shaped as a protrudingpart 18 and as said, is stamped out of the sheeting. Subsequently, the protruding part is bent upwards so that an angle of 90-100 degrees is provided between the plane surface of the protruding part an and thesecond plane surface 14 of thebody 2, i.e. itssecond surface 29. As the sheet, the protruding part, is bent so that its surface runs parallel with the longitudinal axis of thebody 2, great construction strength is achieved as a force on the protrudingpart 18 will run parallel to thebend line 19 of said protrudingpart 18. The force is generated in connection with the abutment of the bracket against a roof and when it is used for securing theunit 22. - The actual protruding
part 18 comprises 1-2bores 23, potentially more, for reception of the holdingunit 22, typically in the form of tubes. Thus, the longitudinal axis of said tubes forms an angle of approx. 90 degrees with the longitudinal axis of thebody 2. -
Figs. 3A-3C show the brackets during mounting in that theresilient sheet elements 7 are bent outwards at the above-mentioned angle of approx. 25 degrees, and that the protrudingpart 18 is also bent upwards in the opposite direction of the bending of the resilient parts and at an angle of 90-100 degrees. Now, one end of thebracket 1 is inserted below a roof plate, and the underlying roof plate will push the resilient part upwards in the direction of the overlying roof plate and in principle lift it, thus facilitating insertion. The angle between the body and the sheet element is open in the direction opposite the insertion direction. -
Fig. 3B shows the bracket having been brought to its final position as thesheet elements 7 flick outwards as soon as they are free of theunderlying roof plate 26. Now, the bracket is being pulled in the opposite direction of the insertion direction, whereby thefourth sides 11 of thesheet elements 7 bore into the underlying batten 5, said fourth sides 11 preferably comprising the above-mentionedretention elements 15. Thereby, a good placement of the bracket is ensured as well as a good distribution of force. -
Fig. 3C shows the bracket in use as a snow trap, where the snow traps holds back the snow in that a holdingunit 22 in the form of tubes is provided in thebores 23 of the protrudingpart 18. -
Figs. 4A and 4B show a perspective view of a set snow traps mounted on a roof, where theroof plates 26 shown inFig. 4A differ from theroof plates 26 shown inFig. 4B . This is in order to demonstrate that the snow trap may be used regardless of the type of roof plates as the essential thing is that there are transverse battens underneath the roof plates into which the sheet elements may bore and ensure fixation of the snow trap. Naturally, the snow trap is placed so that it is mounted in the same row of roof plates so that the holdingunit 22 in the form of tubes may be continuously inserted through all thebores 23 in the protruding part of the show trap. The snow trap is shown with just one protrudingpart 18, but may comprise to protruding parts placed opposite each other which would typically be the case in connection with the snow traps which are to be placed at the end of the roof, i.e. along the right and left edges of the roof. -
Fig. 5A shows the bracket according to the invention for providing steps on a roof, andFig. 5B shows the step shown inFig. 5A mounted on a roof. Twobrackets 1 are placed at the same horizontal level on aroof 25 and spaced with a distance being suitable for a foot step, i.e. approx. 30-40 cm between them. A holdingunit 22 in the form of two parallel tubes is pushed through the twobores 23 of the two upwards-bended protruding parts 18. Thereby, a ladder rung is provided which is mounted on theroof 25 as shown inFig. 5B . The fourth side of thesheet elements 7 of thebrackets 1 bore into the same batten with theretention elements 15 belonging to the fourth side. Thus, thebody 2 is placed on the top surface of theroof plate 25 and helps divide the pressure, while theretention elements 15 ensure that the ladder rung does not slide in relation to the sloping roof part. -
Fig. 7 shows a bracket according to the invention differing from the previously shown bracket in that the two sheet elements comprise an additional bend imprint, i.e. a second bend line/imprint 32. The second bend line/imprint 32 is provided on eachsheet element 7 perpendicular to the central axis of thebody 2 and at a distance to thefirst side 8. A second angle is provided by bending at second imprint/bend line 32. The bending at this line is in the opposite direction of the previously described bend imprint/groove 17. Thereby, a Z-shaped/step-like distance is achieved between the oneend 4 of the bracket and thefourth side 11 so that there is room for a relatively thick roof plate. - In addition, it is also shown that the
support part 6 comprises threebores 23 so that it is possible to insert three parallel bars into the support part. This is advantageous when large amounts of snow/ice are released simultaneously e.g. when snow/ice is released from the surface of solar cells. - By the way, the reference numerals in this
Fig. 7 are the same as in previously shown figures. -
Fig. 6 shows steps constructed as described inFigs. 5A andB , and where thesteps 22 in the form of tubes are placed at the same vertical level, whereby aroof ladder 20 is provided. The distance between the steps is approx. 20-40 cm depending on the inclination of the roof and on the distance between the underlying battens. The more weight on the brackets, the more they bore into the underlying batten. - Typically, the mounting takes place in that the
sheet elements 7, which thereby constitute the fixation part, are bent upwards to the angle of approx. 25 degrees in the pre-imprinted grooves/bend imprints 17 which have a length of 15-30 mm depending on the roof type. The bracket is led up through the roof plates and clicks down due to its resilient construction and locks around the batten. One or two of the longitudinal tubes are mounted, said tubes constitutingholdings units 22 and which are secured by the protruding part/the tube holders. If the bracket is used as snow trap, the double tube holders are mounted at each side of the snow trap bracket in end joints, whereas tube holders are mounted left/right in middle brackets in order to prevent sliding to the side. - The actual tubes are fixated to the snow trap bracket by means of machine screws. Due to the chosen dimension, preferably 5 mm machine screws are used.
- Preferably, the bracket is made by stamping out the form in stainless sheeting with a thickness of 2 mm.
-
- 1.
- bracket
- 2.
- body
- 3.
- fastening means
- 4.
- one end of the body
- 5.
- roof part/batten
- 6.
- support part
- 7.
- sheet element
- 8.
- first side
- 9.
- second side
- 10.
- third side
- 11.
- fourth side
- 12.
- slit
- 13.
- plane surface of the sheet element
- 14.
- plane surface of the body
- 15.
- retention elements
- 16.
- radius of curvature
- 17.
- bend imprint/groove
- 18.
- protruding part
- 19.
- bend line
- 20.
- roof ladder
- 21.
- 22.
- holding unit
- 23.
- bore in 18
- 24.
- second end of the body
- 25.
- roof
- 26.
- roof plate
- 27.
- snow
- 28.
- first surface
- 29.
- second surface
- 30.
- first area
- 31.
- second area
- 32
- second bend imprint
Claims (14)
- A bracket (1) for mounting on roofs, said bracket being made of sheeting and comprising a body (2) that is provided with a plane surface (14) comprising a fastening means (3) at a first end (4) of the body (2) for fastening the bracket to a roof part (5) and a support part (6) at the other end of the body (2), said fastening means (3) comprising at least two sheet elements (7) made in one continuous piece with the body (2) along their respective first side (8), where the two sheet elements (7) each comprises a longitudinal second (9) and a third (10) side extending from each their first side (8), where each sheet element (7) comprises a fourth side (11) placed opposite to the first side (8) and facing away from the first end (4) of the body (2) where and connecting the second (9) and third (10) sides, and where the two sheet elements (7) are placed at each their side of the body (2) and are separated from this by a separation element (12) when the surfaces of the body (2) and the sheet elements (7) are at the same level and surface-parallel, characterised in that the bracket further comprises at least one bend line/imprint (17) that is perpendicular to a central axis of the body (2) for each sheet element (7) where the sheet elements (7) are adapted to form at least one first angle with the plane surface (14) of the body (2) when the fastening means (3) abuts the roof part (5) and where the bend line/imprint (17) is positioned in an area where each sheet element (7) is connected to the rest of the bracket.
- A bracket according to claim 1, characterised in that the separation element (12) comprises a slit or a slot.
- A bracket according to any of the preceding claims, characterised in that the bracket comprises a second bend line/imprint (32), said second bend line/imprint (32) being provided on each sheet element (7) perpendicular on the central axis of the body (2) and at a distance from the first side (8), and that a second angle is provided by bending at said second bend line/imprint (32).
- A bracket according to claim 3, characterised in that the second angle is provided by bending in the opposite direction of the bending direction for providing the first angle.
- A bracket according to any of the preceding claims, characterised in that the separation element (12) comprises a slit or a slot having a width of 1-8 mm measured between the longitudinal delimiting sides of the body (2) and the closest longitudinal sides of the respective sheet Z r elements (7).
- A bracket according to any of the preceding claims, characterised in that the separation element (12) ends in a curvature radius of 1-4 mm in the area at the first side (8).
- A bracket according to any of the preceding claims, characterised in that the fourth side (11) comprises retention elements (15).
- A bracket according to any of the preceding claims, characterised in that the separation element (12) ends at a first (30) and second (31) area placed at each their side of the longitudinal sides of the body (2), said end having a curvature radius (16) of 1-3 mm, preferably 2 mm.
- A bracket according to any of the preceding claims, characterised in that the first sides (8) are placed at a distance from the end of the separation element (12) in the direction of the fourth side (11), said first sides (8) comprising a bend imprint (17).
- A bracket according to any of the preceding claims, characterised in that the support part (6) is made in one piece with the body (2) and in sheeting, said support part (6) comprising at least one part (18) protruding in relation to the longitudinal sides of the body (2), and that the bracket (1) comprises a bend line (19) between the body (2) and the protruding part (18) as well as at least one bore (23) in the protruding part for reception of a unit (22).
- A bracket according to claim 10, characterised in that the unit (22) comprises at least one transverse bar for providing a roof ladder rung or a snow trap.
- A bracket (1) according to claim 6, characterised in that the support part (6) and the surface of the body (2), when facing each other, form a third angle, said angle being preferably 90-100 degrees, and that the first angle is set between a first surface (28) of the body (2) and the sheet elements (7), and that the third angle is set between a second surface (29) of the body, which is opposite the first surface (28), and the support part (6), said angles turning opposite of each other.
- Method for mounting of a bracket (1) according to any of the preceding claims on a roof, characterised in that the sheet elements (7) of the bracket (1) are bent outwards along their first side (8) for providing a first angle, and that its fourth sides (11) are brought into abutment with the roof part (5).
- Method according to claim 13, characterised in that the support part/support parts (6) are bent upwards in a third angle in the opposite direction of the first angle, that the body (2) is inserted between an upper and a lower roof plate (26) with the sheet elements (7) pointing towards the lower roof plate (26), and that the bracket (1) is pulled in the opposite direction of the insertion direction when the sheet elements (7) are free of the roof plate (26), whereby the fourth side (11) of the sheet elements grips a underlying batten (5).
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DKPA201270115A DK177563B1 (en) | 2012-03-14 | 2012-03-14 | Brackets and method of mounting the bracket |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2639380A1 EP2639380A1 (en) | 2013-09-18 |
EP2639380B1 true EP2639380B1 (en) | 2016-12-28 |
Family
ID=47844218
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP13158899.8A Not-in-force EP2639380B1 (en) | 2012-03-14 | 2013-03-13 | A bracket and method for mounting said bracket |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP2639380B1 (en) |
DK (1) | DK177563B1 (en) |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US401202A (en) * | 1889-04-09 | Thomas o gara | ||
DE586484C (en) * | 1933-10-21 | Fritz Eckert | Roof hook | |
AT389140B (en) * | 1988-03-02 | 1989-10-25 | Karl Schmitzer Kg | Snow trap |
FR2763977B1 (en) * | 1997-05-30 | 1999-07-23 | Dimos | DEVICE FOR PERMANENT ANCHORING OF A SAFETY HOOK TO A FRAMEWORK ELEMENT |
JP3778420B2 (en) * | 2000-06-16 | 2006-05-24 | 積水ハウス株式会社 | Connection structure for rooftop equipment |
DE202007003060U1 (en) * | 2007-03-02 | 2008-07-17 | SCHÜCO International KG | connecting element |
-
2012
- 2012-03-14 DK DKPA201270115A patent/DK177563B1/en not_active IP Right Cessation
-
2013
- 2013-03-13 EP EP13158899.8A patent/EP2639380B1/en not_active Not-in-force
Also Published As
Publication number | Publication date |
---|---|
DK201270115A (en) | 2013-09-15 |
EP2639380A1 (en) | 2013-09-18 |
DK177563B1 (en) | 2013-10-21 |
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