EP1147270B1 - Retaining elements for building sheets - Google Patents
Retaining elements for building sheets Download PDFInfo
- Publication number
- EP1147270B1 EP1147270B1 EP00900504A EP00900504A EP1147270B1 EP 1147270 B1 EP1147270 B1 EP 1147270B1 EP 00900504 A EP00900504 A EP 00900504A EP 00900504 A EP00900504 A EP 00900504A EP 1147270 B1 EP1147270 B1 EP 1147270B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- recess
- mounting element
- head
- mounting
- support element
- 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.)
- Expired - Lifetime
Links
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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
- E04D13/16—Insulating devices or arrangements in so far as the roof covering is concerned, e.g. characterised by the material or composition of the roof insulating material or its integration in the roof structure
- E04D13/1606—Insulation of the roof covering characterised by its integration in the roof structure
- E04D13/1643—Insulation of the roof covering characterised by its integration in the roof structure the roof structure being formed by load bearing corrugated sheets, e.g. profiled sheet metal roofs
-
- 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
- E04B1/38—Connections for building structures in general
- E04B1/41—Connecting devices specially adapted for embedding in concrete or masonry
- E04B1/4107—Longitudinal elements having an open profile, with the opening parallel to the concrete or masonry surface, i.e. anchoring rails
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
- E04D3/00—Roof covering by making use of flat or curved slabs or stiff sheets
- E04D3/36—Connecting; Fastening
- E04D3/3601—Connecting; Fastening of roof covering supported by the roof structure with interposition of a insulating layer
- E04D3/3602—The fastening means comprising elongated profiles installed in or on the insulation layer
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
- E04D3/00—Roof covering by making use of flat or curved slabs or stiff sheets
- E04D3/36—Connecting; Fastening
- E04D3/3608—Connecting; Fastening for double roof covering or overroofing
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
- E04D3/00—Roof covering by making use of flat or curved slabs or stiff sheets
- E04D3/36—Connecting; Fastening
- E04D3/361—Connecting; Fastening by specially-profiled marginal portions of the slabs or sheets
- E04D2003/3612—Separate fastening elements fixed to the roof structure and comprising plastic parts for avoiding thermal bridges
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
- E04D3/00—Roof covering by making use of flat or curved slabs or stiff sheets
- E04D3/36—Connecting; Fastening
- E04D3/361—Connecting; Fastening by specially-profiled marginal portions of the slabs or sheets
- E04D2003/3615—Separate fastening elements fixed to the roof structure and consisting of parts permitting relative movement to each other, e.g. for thermal expansion
Definitions
- the invention relates to a retaining element for a building sheet, having an elongate head for engaging at least one building sheet, a mounting element spaced from the head and a connecting member connecting the head and the mounting element.
- the invention further relates to an assembly of at least one such retaining element and at least one building sheet mounted thereby on a building structure.
- GB-A-2167101 discloses elongate retaining elements for mounting building sheets whose free ends are flanges on upstanding connecting ribs of a supporting structure of a building, such as for example supporting beams, T-bars or similar structural elements manufactured from for example timber, steel, aluminium or concrete.
- a supporting structure of a building such as for example supporting beams, T-bars or similar structural elements manufactured from for example timber, steel, aluminium or concrete.
- Fig. 1 of the present drawings It is manufactured in one part, e.g. as an aluminium extrusion, and can be connected to the support structure using connecting elements such as screws through drilled holes in its base.
- Another retaining element illustrated in GB-A-2167101 has a base of thermally insulating material such as thermoplastics acting as a spacing member.
- the base has centrally located holes for securing screws and at its upper side a wide recess with overhanging side flanges retaining a base part of the aluminium extrusion which has an upstanding web carrying the enlarged head which engages the building sheet.
- the extrusion is therefore longitudinally adjustable in the base but appears to be clamped by the overhanging side flanges.
- Such known retaining elements are mounted to a support structure using known connecting elements such as screws.
- the distance between two neighbouring rows of the retaining elements depends on the distance between two neighbouring supporting beams, which distance is determined by the construction of the building, and which consequently reduces the flexibility of location and positioning of the retaining elements.
- the connecting elements such as screws are responsible to a large extent for the occurrence of thermal bridges or cold cracks mainly due to their good thermal conductivity. This problem occurs even in the situation where the support structure also comprises an insulation material.
- a further disadvantage of the known retaining elements is that the direction of pre-setting of the retaining elements has to be done very carefully in order to establish that the various components of an assembly are positioned correctly with respect to each other. The latter is of particular importance when for example a roofing construction is to be located at an angle with respect to the supporting beams or similar structural elements.
- FR-1365407-A discloses a retaining element having an elongate head, a mounting element spaced from the head and a connecting member, which connects the head and the mounting element in a fixed relation.
- This document discloses the use of a support element with a channel having a rectangular-shaped cross-section with an open slot between two lips, which are turned inwards from generally parallel side walls, and the use of a special mounting element which is designed such that in the connected state a shoulder of the mounting element inserted into the channel of the support element and another shoulder outside of the support element surround the lips of the support elements, such that axial movement of the mounting element is basically prevented.
- WO-97-22764-A1 discloses an arrangement for fixing a bolt to a support element.
- the support element defines a channel and has a slot bordered by two lips, which extent inwardly from two inclined sides. The sides incline inwardly towards a spine.
- the head of the bolt should be in abutment with the lips, so as to ensure, that the head is positioned properly and axial loads can be transferred without bending the lips.
- a retaining element having the features of claim 1. This achieves the effect that after the support element is joined to a building structure, the mounting element can be connected tightly to the support element with a larger flexibility.
- the clamping action is preferably obtained by means of a frictional contact between the support element and the mounting element.
- the direction of elongation of the head can be chosen within a wide range of angles with respect to the direction of elongation of the support element.
- the position of the head of the retaining element can be altered until the very last moment that the building sheet is connected to the retaining element, while ensuring a tight connection between the mounting element and the support element.
- the retaining element may be fixed for mounting building sheets to a relatively brittle or a relatively soft support structure, e.g. high density thermal insulation material or a tread-proof fibre insulating board, which brittle or relatively soft support structure is connected to an underlying further support structure formed by traditional elements like supporting beams, T-bars or similar structure elements manufactured from for example timber, steel, aluminium or concrete.
- a relatively brittle or a relatively soft support structure e.g. high density thermal insulation material or a tread-proof fibre insulating board, which brittle or relatively soft support structure is connected to an underlying further support structure formed by traditional elements like supporting beams, T-bars or similar structure elements manufactured from for example timber, steel, aluminium or concrete.
- the support element is elongate and has a recess to receive the mounting element, the recess being bounded by opposed overhanging flanges forming, with the base of the recess, slots which receive and clamp edge portions of the mounting element in the second position.
- This achieves the effect of a relatively simple symmetric construction of the support element, which can be manufacture in a cost-effective manner.
- this elongate structure allows the mounting element to be connected with choice of a wide range of angles with respect to the direction of elongation. And further the connection between these parts is obtained in a very simple, very fast and reproducible manner.
- the elongate support element can be joined to a support structure very easily, while significantly fewer fixing elements, e.g. screws, may be required. Further it can be stiffened in order not to twist under loading to keep the head in an upright position.
- the support element can have its own load bearing capacity, to avoid the need for frequent connection to the supporting beams.
- the slots as seen in transverse cross-section of the support element, have a tapering shape such that their width reduces with increasing distance from the center of the support element and it is preferred that the undersurface of each overhanging flange, which faces the slot, is inclined at an angle of not more than 10° to a transverse plane passing through both slots. This angle of inclination may be in the range of up to 5° with respect to the transverse plane, but should be more than 1°. This construction allows the support element of the retaining element to be connected very tight to the mounting element at the desired position.
- connection obtained between the mounting element and the support element is reversible. If this connection should be made irreversible after assembly, known joining techniques may additionally be applied to fix the parts to each other after assembly, e.g. by means of adhesion, soldering or welding.
- the exterior surfaces of the overhanging flanges have rounded edges. This achieves the effect that when in use a building sheet comes into contact with the support element under the effect of for example cyclic thermal expansion or mechanical loading, the building sheet is not instantly damaged.
- the support element may have at least one projection extending downward for anchoring with a building structure.
- the support element can be connected with the support structure, e.g. high density thermal insulation material, by guiding or pushing it into the support structure.
- the free ends of the projection(s) are provided with a saw tooth structure or the like.
- a further improvement can be obtained in the case where at least one of the projections extends both downward and outward with respect to a central plane of the element.
- the support element can be connected with the building structure by means guiding or pushing it into the building structure sideways. This achieves the effect that vertical movement of the support element with respect to the building structure is restricted.
- the support element may be connected to an underlying building structure by connecting elements such as screws.
- elements such as screws.
- the number of screws required can be reduced significantly with respect to the known retaining elements or can even by reduced to zero. This achieves the effect that the occurrence of so-called cold cracks or thermal bridges may be reduced significantly, which is an important achievement over the known retaining elements.
- the support element as seen in cross-section perpendicular to its elongation direction, has a base wall which defines the base of the recess and is of thickness reducing from the sides of the recess to the center thereof, so that the base of the recess is concave.
- the support element is provided with a recess for countersink connecting elements joining it in use to a building structure. This achieves the effect that the mounting element does not come into contact with the connecting elements for mounting the support element on the building structure and further allows the rotational connection between the support element and the mounting element.
- the mounting element has a plate shape having a periphery comprising opposite straight side portions parallel to the elongation direction of the head and curved end portions connecting said side portions. This achieves the effect that the mounting element can be easily located in the support element and subsequently turned to a desired position with respect to the direction of elongation of the support element while simultaneously achieving the desired clamping connection between the mounting element and the support element.
- the mounting element has an essentially ellipse shape. This also achieves the effect that the mounting element can be easily located in the support element and subsequently turned to a desired position while simultaneously achieving the tight connection between the mounting element and the support element.
- the mounting element has, on its side facing away from the head, a recess in order to provide clearance for a fixing element or elements joining the support element to a building structure in use.
- the retaining element can be manufactured from a metal, preferably aluminium, or from a plastics material. Where high mechanical loading is expected, then metal is preferable, and aluminium in particular, because this metal is strong yet has a low density. Where mechanical loading is expected to be low, a suitable plastics material may be chosen because this is normally less expensive than metal. A combination of for example a plastics material support element and a metal mounting element and head is possible, and vice versa. An advantage of this is the reduction of the occurrence of a so-called cold crack in the building structure.
- the support element is preferably made by extrusion, roll-forming or casting techniques, which allow for the production of long elongate sections or profiles on which mounting elements may be connected at spaced intervals.
- An extruded section is simple and relatively inexpensive to manufacture. Alternatively the sections may be cut into sub-sections in order to provide one support element for connection with a single mounting element.
- the mounting element and head in preferred embodiments constitute a symmetrical article which can be manufactured by extrusion techniques and subsequently cut into single elements which are machined to final dimensions.
- this article may be cast by known foundry techniques, such as for example both low and high pressure die-casting.
- an assembly comprising at least one building sheet and at least one retaining element as set out above engaging said building sheet to retain it on a building structure.
- Fig. 1 shows schematically a retaining element in one part in accordance with the state of the art consisting of an elongate head part 1, a connecting flange or web 2 and a base 3 symmetric relative to the central longitudinal plane (ME) of the connecting web 2, wherein the base part has a shallow recess underneath and is provided with holes for fixing means, e.g. screws, for joining it to a building support structure, and wherein the head part 1 co-operates with edge ribs of two building sheets 8 to hold them.
- fixing means e.g. screws
- Fig. 2 shows a retaining element of the invention having a first component consisting of an elongate head part 1 and a connecting element in the form of a web 2 and a mounting element 3 at the base of the web 2.
- the second component is an elongate support element or base 4.
- the directions of elongation of the head part 1 and of the base 4 are perpendicular with respect to each other in Fig. 2.
- the base 4 has a channel-shaped recess to receive the mounting element 3, formed by upstanding flanges which overhang the base surface of the recess to provide parallel opposed lateral slots or grooves, which receive the corresponding lateral portions of the mounting element 3.
- these grooves or slots taper towards their closed ends, and edge portions of the mounting element 3 are correspondingly tapered to make a clamping fit in the slots.
- the first component 1,2,3 is brought into the clamped position, in which it is frictionally held by a clamping action, by insertion of the mounting portion 3 into the recess of the base 4 followed by rotation relative to the base 4, as illustrated by Fig. 6.
- Fig. 6 shows that the mounting portion 3 has a long dimension and a short dimension.
- Figs. 3A to 3D are only schematic representations of the retaining element in combination with the base part, and that the overhanging flanges may be tapered in order to provide a frictional connection or frictional engagement between the two components.
- the slots need not necessarily be tapered but may also have for example a rectangular shape such as shown in Figs. 5A and 5B.
- the components may have some inherent elasticity, to allow this frictional clamping to take place, in particular to permit the clamping to occur over a range of relative rotational positions of the two components.
- the longitudinal position of the mounting element 3 along the base 4 can also be selected at will.
- the base 4 can be a continuous element or separated to a desired specific length.
- Fig. 3A shows a support element 4 of an embodiment of the invention in which the faces 6 of the overhanging flanges facing the base surface of the recess are at an angle ⁇ with respect to the horizontal lateral plane of the element.
- ⁇ is in a range of up to approximately 10° and more preferably is no more than 5°.
- Fig. 3A shows an embodiment where the base of the recess of the support element has a dished or concave shape, due to a thickness reduction from its sides to its center, to prevent contact in the assembled state of the base portion with a fixing screw shown in the Figure.
- Fig. 3A shows a support element 4 of an embodiment of the invention in which the faces 6 of the overhanging flanges facing the base surface of the recess are at an angle ⁇ with respect to the horizontal lateral plane of the element.
- ⁇ is in a range of up to approximately 10° and more preferably is no more than 5°.
- Fig. 3A shows an embodiment where the base of the rece
- FIG. 3B shows schematically the embodiment where the base of the support element is essentially flat and is further provided with a recess for receiving in a countersink manner a connecting element (e.g. screw) for joining it to a building structure.
- Fig. 3C shows schematically an embodiment where the surfaces 7 of the overhanging flanges facing outward have curved edges. This achieves the effect that when in use a building sheet comes into contact with the support element under the effect of for example cyclic thermal expansion or mechanical loading, the building sheet is not instantly damaged.
- Fig. 3D shows schematically an embodiment with the additional feature that the base 4 has side flanges provided with holes 9 for fixing means for joining it to a building structure.
- the shown recess for receiving connecting elements in the centre of the bottom part of the support element is optional.
- Fig. 4A shows schematically the embodiment of Fig. 3B in which the base 4 is further provided with three projections 5 extending downward for anchoring the support element with a building support structure, which projections 5 extend in the direction of elongation of the base 4.
- the number of projections 5 and their length may be varied to depend on the circumstances of the case.
- Fig. 4B shows the embodiment where the free end of a single such projection 5 is provided with a saw tooth structure or the like to facilitate its pushing into a building structure.
- Fig. 4C shows schematically projections 5 which extend downward and outward in order to prevent vertical movement of the base 4 with respect to the building structure.
- the lateral slots under the overhanging flange are parallel-sided, so that a frictional engagement with the mounting element 3 occurs over a wide angular range.
- Fig. 5A shows schematically a retaining element in assembled state consisting of a support element 4 of Fig. 4 and the first component provided with a connecting flange 2 with a tapered shape from the head part 1 to the mounting element 3.
- Two shapes are shown of the outer edges of the connecting flange 2, and which are indicated by 2' and 2" respectively.
- a further alternative embodiment is shown in Fig. 5B where the connecting flange 2 has essentially a rectangular shape (outer edges indicated by 2"') and is further provided with recesses in the vicinity of the lower end 3 to prevent contact with the flanges of the support element 4 to allow for a twist-lock movement during assembly.
- Fig. 6A shows schematically the assembled retaining element of Fig. 2 in which the directions of elongation of the retaining element and of the support element are perpendicular to each other
- Fig. 6B and Fig. 6C show respectively two embodiments of the shape of the mounting element 3.
- Figs. 6B and 6C show in common a length of the support element (base 4) with the two mounting portions 3 in the clamped positions.
- the plate-shaped mounting element 3 has a "race-track" periphery, i.e. straight opposite sides parallel to the elongation direction of the head portion and semicircular ends.
- the plate-shaped mounting element 3 has an elliptical periphery.
- a, b, c and d are indicated in Figs. 6A, 6B, 6C.
- Typical values for the dimensions a, b, c and d are in the range 40-70 mm, 5-15 mm, 40-70 mm and 20-50 mm respectively.
- the dimension c must be smaller than the dimension a.
- the dimension d is in the range of ( a-b ) in order to allow the retaining element to be inserted into the recess of the support element and subsequently turned to the desired angle.
- the angle between the direction of elongation of the head portion 1 and that of the support element 4 in assembled state is 90°, but this angle may depend on the circumstances of the case and for example may vary in the range of 45° to 90°, while maintaining a durable tight connection between the two components.
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Connection Of Plates (AREA)
- Joining Of Building Structures In Genera (AREA)
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Abstract
Description
- The invention relates to a retaining element for a building sheet, having an elongate head for engaging at least one building sheet, a mounting element spaced from the head and a connecting member connecting the head and the mounting element. The invention further relates to an assembly of at least one such retaining element and at least one building sheet mounted thereby on a building structure.
- GB-A-2167101 discloses elongate retaining elements for mounting building sheets whose free ends are flanges on upstanding connecting ribs of a supporting structure of a building, such as for example supporting beams, T-bars or similar structural elements manufactured from for example timber, steel, aluminium or concrete. One form of retaining element of this prior publication is illustrated in Fig. 1 of the present drawings. It is manufactured in one part, e.g. as an aluminium extrusion, and can be connected to the support structure using connecting elements such as screws through drilled holes in its base. Another retaining element illustrated in GB-A-2167101 has a base of thermally insulating material such as thermoplastics acting as a spacing member. The base has centrally located holes for securing screws and at its upper side a wide recess with overhanging side flanges retaining a base part of the aluminium extrusion which has an upstanding web carrying the enlarged head which engages the building sheet. The extrusion is therefore longitudinally adjustable in the base but appears to be clamped by the overhanging side flanges.
- Such known retaining elements are mounted to a support structure using known connecting elements such as screws. The distance between two neighbouring rows of the retaining elements depends on the distance between two neighbouring supporting beams, which distance is determined by the construction of the building, and which consequently reduces the flexibility of location and positioning of the retaining elements. Further the connecting elements such as screws are responsible to a large extent for the occurrence of thermal bridges or cold cracks mainly due to their good thermal conductivity. This problem occurs even in the situation where the support structure also comprises an insulation material. A further disadvantage of the known retaining elements is that the direction of pre-setting of the retaining elements has to be done very carefully in order to establish that the various components of an assembly are positioned correctly with respect to each other. The latter is of particular importance when for example a roofing construction is to be located at an angle with respect to the supporting beams or similar structural elements.
- FR-1365407-A discloses a retaining element having an elongate head, a mounting element spaced from the head and a connecting member, which connects the head and the mounting element in a fixed relation. This document discloses the use of a support element with a channel having a rectangular-shaped cross-section with an open slot between two lips, which are turned inwards from generally parallel side walls, and the use of a special mounting element which is designed such that in the connected state a shoulder of the mounting element inserted into the channel of the support element and another shoulder outside of the support element surround the lips of the support elements, such that axial movement of the mounting element is basically prevented.
- WO-97-22764-A1 discloses an arrangement for fixing a bolt to a support element. The support element defines a channel and has a slot bordered by two lips, which extent inwardly from two inclined sides. The sides incline inwardly towards a spine. The head of the bolt should be in abutment with the lips, so as to ensure, that the head is positioned properly and axial loads can be transferred without bending the lips.
- It is an object of the invention to provide a retaining element for building sheets which allows for a larger flexibility in positioning of the retaining element with respect to a support structure.
- According to the invention there is provided a retaining element having the features of
claim 1. This achieves the effect that after the support element is joined to a building structure, the mounting element can be connected tightly to the support element with a larger flexibility. The clamping action is preferably obtained by means of a frictional contact between the support element and the mounting element. The direction of elongation of the head can be chosen within a wide range of angles with respect to the direction of elongation of the support element. The position of the head of the retaining element can be altered until the very last moment that the building sheet is connected to the retaining element, while ensuring a tight connection between the mounting element and the support element. - A further advantage is that the retaining element may be fixed for mounting building sheets to a relatively brittle or a relatively soft support structure, e.g. high density thermal insulation material or a tread-proof fibre insulating board, which brittle or relatively soft support structure is connected to an underlying further support structure formed by traditional elements like supporting beams, T-bars or similar structure elements manufactured from for example timber, steel, aluminium or concrete.
- The support element is elongate and has a recess to receive the mounting element, the recess being bounded by opposed overhanging flanges forming, with the base of the recess, slots which receive and clamp edge portions of the mounting element in the second position. This achieves the effect of a relatively simple symmetric construction of the support element, which can be manufacture in a cost-effective manner. Further this elongate structure allows the mounting element to be connected with choice of a wide range of angles with respect to the direction of elongation. And further the connection between these parts is obtained in a very simple, very fast and reproducible manner. The elongate support element can be joined to a support structure very easily, while significantly fewer fixing elements, e.g. screws, may be required. Further it can be stiffened in order not to twist under loading to keep the head in an upright position. The support element can have its own load bearing capacity, to avoid the need for frequent connection to the supporting beams.
- More preferably the slots, as seen in transverse cross-section of the support element, have a tapering shape such that their width reduces with increasing distance from the center of the support element and it is preferred that the undersurface of each overhanging flange, which faces the slot, is inclined at an angle of not more than 10° to a transverse plane passing through both slots. This angle of inclination may be in the range of up to 5° with respect to the transverse plane, but should be more than 1°. This construction allows the support element of the retaining element to be connected very tight to the mounting element at the desired position.
- The connection obtained between the mounting element and the support element is reversible. If this connection should be made irreversible after assembly, known joining techniques may additionally be applied to fix the parts to each other after assembly, e.g. by means of adhesion, soldering or welding.
- In an embodiment the exterior surfaces of the overhanging flanges have rounded edges. This achieves the effect that when in use a building sheet comes into contact with the support element under the effect of for example cyclic thermal expansion or mechanical loading, the building sheet is not instantly damaged.
- The support element may have at least one projection extending downward for anchoring with a building structure. This achieves the effect that the support element can be connected with the support structure, e.g. high density thermal insulation material, by guiding or pushing it into the support structure. This can be further facilitated when the free ends of the projection(s) are provided with a saw tooth structure or the like. A further improvement can be obtained in the case where at least one of the projections extends both downward and outward with respect to a central plane of the element. The support element can be connected with the building structure by means guiding or pushing it into the building structure sideways. This achieves the effect that vertical movement of the support element with respect to the building structure is restricted.
- Additionally or alternatively to the projections the support element may be connected to an underlying building structure by connecting elements such as screws. However, the number of screws required can be reduced significantly with respect to the known retaining elements or can even by reduced to zero. This achieves the effect that the occurrence of so-called cold cracks or thermal bridges may be reduced significantly, which is an important achievement over the known retaining elements.
- In an embodiment the support element, as seen in cross-section perpendicular to its elongation direction, has a base wall which defines the base of the recess and is of thickness reducing from the sides of the recess to the center thereof, so that the base of the recess is concave. This achieves the effect that the mounting element does not come into contact with connecting elements, e.g. screws, mounting the support element on a building structure and further this allows the rotational connection between the support element and the mounting element.
- In an alternative embodiment, the support element is provided with a recess for countersink connecting elements joining it in use to a building structure. This achieves the effect that the mounting element does not come into contact with the connecting elements for mounting the support element on the building structure and further allows the rotational connection between the support element and the mounting element.
- In one embodiment the mounting element has a plate shape having a periphery comprising opposite straight side portions parallel to the elongation direction of the head and curved end portions connecting said side portions. This achieves the effect that the mounting element can be easily located in the support element and subsequently turned to a desired position with respect to the direction of elongation of the support element while simultaneously achieving the desired clamping connection between the mounting element and the support element.
- In an alternative embodiment the mounting element has an essentially ellipse shape. This also achieves the effect that the mounting element can be easily located in the support element and subsequently turned to a desired position while simultaneously achieving the tight connection between the mounting element and the support element.
- Preferably the mounting element has, on its side facing away from the head, a recess in order to provide clearance for a fixing element or elements joining the support element to a building structure in use. This achieves the effect that the mounting portion does not come into contact with connecting elements, e.g. screws, mounting the support element on a building structure and allows the rotational connection between the support element and the mounting element.
- To a large extent the choice of the material of the retaining element depends on the requirements for its mechanical and/or physical properties. The retaining element can be manufactured from a metal, preferably aluminium, or from a plastics material. Where high mechanical loading is expected, then metal is preferable, and aluminium in particular, because this metal is strong yet has a low density. Where mechanical loading is expected to be low, a suitable plastics material may be chosen because this is normally less expensive than metal. A combination of for example a plastics material support element and a metal mounting element and head is possible, and vice versa. An advantage of this is the reduction of the occurrence of a so-called cold crack in the building structure.
- The support element is preferably made by extrusion, roll-forming or casting techniques, which allow for the production of long elongate sections or profiles on which mounting elements may be connected at spaced intervals. An extruded section is simple and relatively inexpensive to manufacture. Alternatively the sections may be cut into sub-sections in order to provide one support element for connection with a single mounting element.
- The mounting element and head in preferred embodiments constitute a symmetrical article which can be manufactured by extrusion techniques and subsequently cut into single elements which are machined to final dimensions. Alternatively, this article may be cast by known foundry techniques, such as for example both low and high pressure die-casting.
- According to the invention in another aspect, there is provided an assembly comprising at least one building sheet and at least one retaining element as set out above engaging said building sheet to retain it on a building structure.
- The invention will now be illustrated by several non-limitative embodiments, with reference to the accompanying drawings, in which:
- Fig. 1 shows a known retaining element as described above, in cross-section, together with two building sheets with ribbed edges;
- Fig. 2 shows in cross-section an embodiment of the retaining element in accordance with the invention;
- Figs. 3A, 3B, 3C and 3D show cross-sections of several embodiments of the support element of the retaining element in accordance with the invention in dis-assembled state;
- Figs. 4A, 4B show partial perspective views of two embodiments of the support element of the retaining element in accordance with the invention in dis-assembled state and Fig. 4C shows a cross-section of another such embodiment;
- Figs. 5A and 5B show cross-sections of embodiments of the retaining element in accordance with the invention in assembled state; and
- Figs. 6A, 6B and 6C show in cross-section in different planes embodiments of the retaining element in accordance with the invention.
- Fig. 1 shows schematically a retaining element in one part in accordance with the state of the art consisting of an
elongate head part 1, a connecting flange orweb 2 and abase 3 symmetric relative to the central longitudinal plane (ME) of the connectingweb 2, wherein the base part has a shallow recess underneath and is provided with holes for fixing means, e.g. screws, for joining it to a building support structure, and wherein thehead part 1 co-operates with edge ribs of twobuilding sheets 8 to hold them. - Fig. 2 shows a retaining element of the invention having a first component consisting of an
elongate head part 1 and a connecting element in the form of aweb 2 and a mountingelement 3 at the base of theweb 2. The second component is an elongate support element orbase 4. The directions of elongation of thehead part 1 and of thebase 4 are perpendicular with respect to each other in Fig. 2. Thebase 4 has a channel-shaped recess to receive the mountingelement 3, formed by upstanding flanges which overhang the base surface of the recess to provide parallel opposed lateral slots or grooves, which receive the corresponding lateral portions of the mountingelement 3. - As can be seen, these grooves or slots taper towards their closed ends, and edge portions of the mounting
element 3 are correspondingly tapered to make a clamping fit in the slots. Thefirst component portion 3 into the recess of thebase 4 followed by rotation relative to thebase 4, as illustrated by Fig. 6. Fig. 6 shows that the mountingportion 3 has a long dimension and a short dimension. - It is believed to be clear for the skilled person when looking at Figs. 3A to 3D that these figures are only schematic representations of the retaining element in combination with the base part, and that the overhanging flanges may be tapered in order to provide a frictional connection or frictional engagement between the two components. The skilled person will understand, that the slots need not necessarily be tapered but may also have for example a rectangular shape such as shown in Figs. 5A and 5B. The components may have some inherent elasticity, to allow this frictional clamping to take place, in particular to permit the clamping to occur over a range of relative rotational positions of the two components.
- The longitudinal position of the mounting
element 3 along thebase 4 can also be selected at will. - This type of join also allows a large flexibility of positioning of the direction of elongation of the retaining element with respect to the direction of elongation of the support element which is joined to a support structure. The
base 4 can be a continuous element or separated to a desired specific length. - Fig. 3A shows a
support element 4 of an embodiment of the invention in which thefaces 6 of the overhanging flanges facing the base surface of the recess are at an angle α with respect to the horizontal lateral plane of the element. Preferably α is in a range of up to approximately 10° and more preferably is no more than 5°. Further Fig. 3A shows an embodiment where the base of the recess of the support element has a dished or concave shape, due to a thickness reduction from its sides to its center, to prevent contact in the assembled state of the base portion with a fixing screw shown in the Figure. Fig. 3B shows schematically the embodiment where the base of the support element is essentially flat and is further provided with a recess for receiving in a countersink manner a connecting element (e.g. screw) for joining it to a building structure. Fig. 3C shows schematically an embodiment where thesurfaces 7 of the overhanging flanges facing outward have curved edges. This achieves the effect that when in use a building sheet comes into contact with the support element under the effect of for example cyclic thermal expansion or mechanical loading, the building sheet is not instantly damaged. Fig. 3D shows schematically an embodiment with the additional feature that thebase 4 has side flanges provided withholes 9 for fixing means for joining it to a building structure. The shown recess for receiving connecting elements in the centre of the bottom part of the support element is optional. - Fig. 4A shows schematically the embodiment of Fig. 3B in which the
base 4 is further provided with threeprojections 5 extending downward for anchoring the support element with a building support structure, whichprojections 5 extend in the direction of elongation of thebase 4. The number ofprojections 5 and their length may be varied to depend on the circumstances of the case. Fig. 4B shows the embodiment where the free end of a singlesuch projection 5 is provided with a saw tooth structure or the like to facilitate its pushing into a building structure. Fig. 4C shows schematicallyprojections 5 which extend downward and outward in order to prevent vertical movement of thebase 4 with respect to the building structure. In the embodiments of Fig. 4, the lateral slots under the overhanging flange are parallel-sided, so that a frictional engagement with the mountingelement 3 occurs over a wide angular range. Combinations of features of the embodiments as set out here are possible and may be varied to depend on the circumstances of the case. - Fig. 5A shows schematically a retaining element in assembled state consisting of a
support element 4 of Fig. 4 and the first component provided with a connectingflange 2 with a tapered shape from thehead part 1 to the mountingelement 3. Two shapes are shown of the outer edges of the connectingflange 2, and which are indicated by 2' and 2" respectively. A further alternative embodiment is shown in Fig. 5B where the connectingflange 2 has essentially a rectangular shape (outer edges indicated by 2"') and is further provided with recesses in the vicinity of thelower end 3 to prevent contact with the flanges of thesupport element 4 to allow for a twist-lock movement during assembly. - Fig. 6A shows schematically the assembled retaining element of Fig. 2 in which the directions of elongation of the retaining element and of the support element are perpendicular to each other, while Fig. 6B and Fig. 6C show respectively two embodiments of the shape of the mounting
element 3. Figs. 6B and 6C show in common a length of the support element (base 4) with the two mountingportions 3 in the clamped positions. In Fig. 6B, the plate-shaped mountingelement 3 has a "race-track" periphery, i.e. straight opposite sides parallel to the elongation direction of the head portion and semicircular ends. In Fig. 6C, the plate-shaped mountingelement 3 has an elliptical periphery. - Also relative dimensions a, b, c and d are indicated in Figs. 6A, 6B, 6C. Typical values for the dimensions a, b, c and d, but by no way as a limitation, are in the range 40-70 mm, 5-15 mm, 40-70 mm and 20-50 mm respectively. In order to allow the
first component support element 4 by a twist-lock movement it can be seen that with clearance the dimension c must be smaller than the dimension a. Further the dimension d is in the range of (a-b) in order to allow the retaining element to be inserted into the recess of the support element and subsequently turned to the desired angle. In these examples the angle between the direction of elongation of thehead portion 1 and that of thesupport element 4 in assembled state is 90°, but this angle may depend on the circumstances of the case and for example may vary in the range of 45° to 90°, while maintaining a durable tight connection between the two components. - While the invention has been described in conjunction with the exemplary embodiments described above, many equivalent modifications and variations will be apparent to those skilled in the art when given this disclosure. Accordingly, the exemplary embodiments of the invention set forth above are considered to be illustrative and not limiting. Various changes to the described embodiments may be made without departing from the scope of the invention.
Claims (13)
- A retaining element for a building sheet having an elongate head (1) for engaging at least one building sheet, a mounting element (3) spaced from the head (1), a connecting member (2) connecting the head (1) and the mounting element (3) in a fixed relation and a support element (4) which detachably receives and holds the mounting element (3) in a recess thereof, wherein the support element (4) and the mounting element (3) are relatively rotatable between a first position at which the mounting element (3) is freely detachable and a second position in which the mounting element (3) is held on the support element (2), characterized in that the recess and the clamp edge portions of the mounting element (3) to be engaged therewith have a corresponding shape such that in the second position the mounting element (3) is held firmly on the support element (3) by clamping action between the recess and the clamp edges in engagement therewith, and wherein the support element (4) is elongate and has a recess to receive the mounting element (3), said recess being bounded by opposed overhanging flanges forming, with the base of the recess, slots which receive and clamp edge portions of the mounting element in said second position.
- A retaining element according to claim 1 wherein said slots, as seen in transverse cross-section of the support element, have a tapering shape such that their width reduces with increasing distance from the centre of the support element.
- A retaining element according to claim 2 wherein the undersurface (6) of each said overhanging flange, which faces said slot, is inclined at an angle of not more than 10° to a transverse plane passing through both slots.
- A retaining element according to claim 1, 2 or 3, wherein the exterior surface (7) of each said overhanging flange has rounded edges.
- A retaining element according to any one of claims 1 to 4, wherein the support element, as seen in cross-section perpendicular to its elongation direction, has a base wall which defines the base of the recess and is of thickness reducing from the sides of the recess to the centre thereof, so that the base of the recess is concave.
- A retaining element according to any one of claims 1 to 4, wherein the base of the recess has a recess adapted to receive a head of a fixing member for fixing the support element to a building structure in use.
- A retaining element according to any one of claims 1 to 6 wherein said support element has at least one extending downwardly projection (5) for anchoring it to a building structure in use.
- A retaining element according to any one of claims 1 to 7 wherein said mounting element (3) has a plate shape having a periphery comprising opposite straight side portions parallel to the elongation direction of the head (1) and curved end portions connecting said side portions.
- A retaining element according to any one of claims 1 to 7 wherein said mounting element (3) has a plate shape having a periphery, which is substantially an ellipse.
- A retaining element according to any one of claims 1 to 9 wherein said mounting element (3) has, on its side facing away from the head (1), a recess in order to provide clearance for a fixing element or elements joining the support element (4) to a building structure in use.
- A retaining element according to any one of claims 1 to 10 wherein said connecting member (2) has a plate-like shape which, as seen in side view perpendicular to the elongation direction of the head (1), tapers from the head (1) to the mounting element (3).
- A retaining element according to any one of claims 1 to 10 wherein said connecting member (2) has a plate-like shape which, as seen in side view perpendicular to the elongation direction of the head (1), has generally uniform width from the head (1) to the mounting element (3) with recesses adjacent the mounting element.
- An assembly comprising at least one building sheet (8) and at least one retaining element according to any one of claims 1 to 12 engaging the building sheet to hold it on a building structure.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP00900504A EP1147270B1 (en) | 1999-01-08 | 2000-01-04 | Retaining elements for building sheets |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP99200034 | 1999-01-08 | ||
EP99200034 | 1999-01-08 | ||
EP00900504A EP1147270B1 (en) | 1999-01-08 | 2000-01-04 | Retaining elements for building sheets |
PCT/EP2000/000038 WO2000040823A1 (en) | 1999-01-08 | 2000-01-04 | Retaining elements for building sheets |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1147270A1 EP1147270A1 (en) | 2001-10-24 |
EP1147270B1 true EP1147270B1 (en) | 2006-09-20 |
Family
ID=8239789
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00900504A Expired - Lifetime EP1147270B1 (en) | 1999-01-08 | 2000-01-04 | Retaining elements for building sheets |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP1147270B1 (en) |
AT (1) | ATE340292T1 (en) |
AU (1) | AU3045100A (en) |
DE (1) | DE60030839T2 (en) |
ES (1) | ES2272253T3 (en) |
WO (1) | WO2000040823A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3786385A1 (en) | 2019-09-02 | 2021-03-03 | Kalzip GmbH | Fastening structure with reduced number of components |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2003016652A1 (en) * | 2001-08-15 | 2003-02-27 | Corus Bausysteme Gmbh | Sub-structure for a roof or a facade |
DE10144119A1 (en) * | 2001-09-08 | 2003-03-27 | Bemo Elementbau Gmbh & Co Kg | Holder for cambered profiled boards on buildings has foot part and protruding support rib whose head part has tapered incline breaking edge of end face and enabling play during heat expansion |
DE10212448A1 (en) * | 2002-03-20 | 2003-10-02 | Proeckl Gmbh | Profile element with a rail and an adhesive, roof system and method for covering |
FR2849884B1 (en) * | 2003-01-13 | 2014-07-25 | Corus Bausysteme Gmbh | SUB-STRUCTURE FOR ROOF OR FACADE. |
FR2853340A1 (en) | 2003-04-07 | 2004-10-08 | Corus Bausysteme Gmbh | ROOF STRUCTURE |
DE20305954U1 (en) * | 2003-04-11 | 2003-06-18 | Corus Bausysteme GmbH, 56070 Koblenz | Roof construction and fastening device therefor |
DE10323368B3 (en) * | 2003-05-21 | 2004-08-19 | Corus Bausysteme Gmbh | Support system for attaching building roof or wall cladding panels to sub-structure has support elements for cladding panels locked to support rails by relative rotation |
US20050011154A1 (en) * | 2003-07-16 | 2005-01-20 | Kwon Kim | Roof systems and panel clip arrangements therefor |
DE212004000081U1 (en) | 2004-01-23 | 2006-08-31 | Corus Bausysteme Gmbh | Holding arrangement for holding a blue plate |
DE202006020824U1 (en) | 2006-05-13 | 2010-06-17 | Maas Profile Gmbh & Co.Kg | Mounting system for mounting trim panels on a building |
ATE439485T1 (en) * | 2006-05-24 | 2009-08-15 | Corus Bausysteme Gmbh | HOLDING ELEMENT WITH A DETACHABLE CONNECTION BETWEEN A CONNECTING ELEMENT AND A MOUNTING ELEMENT |
GB0707029D0 (en) * | 2007-04-12 | 2007-05-23 | Toy John | Cladding Systems |
FR2962797B1 (en) * | 2010-07-19 | 2014-02-14 | Tenesol | STRUCTURE FOR MOUNTING A SOLAR ENERGY RECOVERING PANEL ON A SUPPORT, SYSTEM COMPRISING SUCH A STRUCTURE, INSTALLATION COMPRISING SUCH A SYSTEM, METHOD FOR MOUNTING A SYSTEM FOR RECOVERING SOLAR ENERGY ON A SUPPORT |
DE202010008389U1 (en) * | 2010-08-27 | 2010-11-11 | Ibc Solar Ag | Device for fastening a mounting rail |
FR2983497B1 (en) * | 2011-12-01 | 2014-01-10 | Deltisol | INTERRUPTION DEVICE FOR CONCRETE FLOOR FLOORS WITH INTERIORS. |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB324451A (en) * | 1928-11-16 | 1930-01-30 | Samuel Clyde Awbrey | Improvements in securing brick, stone and like facings to concrete walls |
GB708794A (en) * | 1952-09-17 | 1954-05-12 | William Octavius Atkinson | Improved device for fixing corrugated and like sheets to their supports |
FR1365407A (en) * | 1963-05-20 | 1964-07-03 | Advanced fixing device for corrugated sheet | |
ATE36888T1 (en) * | 1985-12-12 | 1988-09-15 | Bemo Elementbau Ag | FIXING SYSTEM FOR A ROOF COVERING OR WALL COVERING. |
DE3546107A1 (en) * | 1985-12-24 | 1987-06-25 | Halfeneisen Gmbh & Co Kg | ANCHOR RAIL FOR CONSTRUCTION TECHNOLOGY |
GB2193513A (en) * | 1986-08-05 | 1988-02-10 | Harris & Edgar Limited | A channel and wall tie |
GB9525880D0 (en) * | 1995-12-19 | 1996-02-21 | Limited | Channel |
-
2000
- 2000-01-04 DE DE60030839T patent/DE60030839T2/en not_active Expired - Lifetime
- 2000-01-04 AU AU30451/00A patent/AU3045100A/en not_active Abandoned
- 2000-01-04 WO PCT/EP2000/000038 patent/WO2000040823A1/en active IP Right Grant
- 2000-01-04 EP EP00900504A patent/EP1147270B1/en not_active Expired - Lifetime
- 2000-01-04 ES ES00900504T patent/ES2272253T3/en not_active Expired - Lifetime
- 2000-01-04 AT AT00900504T patent/ATE340292T1/en active
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3786385A1 (en) | 2019-09-02 | 2021-03-03 | Kalzip GmbH | Fastening structure with reduced number of components |
EP3786386A2 (en) | 2019-09-02 | 2021-03-03 | Kalzip GmbH | Fastening structure with retaining rail for different holding elements |
Also Published As
Publication number | Publication date |
---|---|
AU3045100A (en) | 2000-07-24 |
WO2000040823A1 (en) | 2000-07-13 |
EP1147270A1 (en) | 2001-10-24 |
ATE340292T1 (en) | 2006-10-15 |
ES2272253T3 (en) | 2007-05-01 |
DE60030839T2 (en) | 2007-03-15 |
DE60030839D1 (en) | 2006-11-02 |
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