WO1993004243A1

WO1993004243A1 - Securing a roof sealing strip or the like

Info

Publication number: WO1993004243A1
Application number: PCT/DE1992/000689
Authority: WO
Inventors: Hans-Ludwig Griesheimer; Ulrich Müller; Reinhard Schubert; Wolfgang Tebart
Original assignee: Braas Gmbh
Priority date: 1991-08-23
Filing date: 1992-08-18
Publication date: 1993-03-04
Also published as: ES2068721T3; DE4128033C1; DE59201158D1; EP0599985B1; EP0599985A1; DK0599985T3; ATE116710T1

Abstract

The invention relates to securing means (10) for a roof sealing strip (18) or the like , consisting of a support (14, 114) and a securing device (16) passing through it and the underlying sealing strip (18), the upper end of which is secured pivotably and by friction to the support (14; 114) and the lower end of which is anchored in the sub-structure (22). In order to construct securing means in such a way that reliable sealing at the securing point is ensured even if the securing device is not exactly perpendicular to the roof surface, it is proposed that the support (14, 114) be arranged so as to be variable in height inside a dome-shaped cover (12; 112) lying on the sealing strip (18) and closed off on the underside by a base plate (44; 144), where its outer periphery (12; 112) engages with the inner wall (42; 142) of the cover (12; 112) in such a way that, at least in its upper or lower end position, it is secured in rotation to the cover (12; 112), and the pivotable and frictional joint between the upper end (26) of the securing device (16) extending through the base plate (44; 144) and the support (14; 114) takes the form of an articulation device (15) fitted to pivot but not rotate in its upper side which is secured in rotation to the upper end of the securing device (16). Inside the cover (12; 112) may be fitted a container (50; 150) filled with a sealant (52; 152) which opens on approach of the support (14; 114) in its upper or lower end positions and releases the sealant (52; 152).

Description

Fastening a roof waterproofing membrane or the like

The invention relates to an attachment

Roof waterproofing membrane or the like, consisting of a support element and a fastening means penetrating this and the underlying sealing membrane, the upper end of which is pivotally and forcefully connected to the support element and the lower end of which is anchored in the substructure.

Sealing membranes, in particular sealing membranes made of PoLyi sobutene, Po Lyvi ny L ch Lori d, bitumen, PoLymerbi gymnastics or the like, laid on a flat roof, are to be fixed to the subsurface using mechanical fastenings to prevent lifting. At least three, in the corner area up to more than ten and in the edge area an intermediate number of fastenings per square meter roof area must be provided in order to prevent this being lifted off by wind.

Usually, the fastenings are arranged in the edge area of the roof waterproofing membrane and covered by the adjacent roof waterproofing membrane, a seam overlap of 10 cm to 12 cm being provided. Seam overlaps represent a significant cost factor, especially for plastic roof waterproofing membranes.

Since the fastenings within an area are to be distributed approximately equally over the roof area, in areas that require a large number of fastenings, narrower roof sealing sheets are laid as in the central area of a roof. The fastenings are therefore arranged in rows running parallel to the edges of a roof waterproofing membrane. Within certain limits, the spacing of the fastenings can be adjusted within a range of the number of fastenings required per square meter. there A distance of more than 50 cm as well as a distance of less than 15 cm should be avoided. The dependency on different web widths also means a relatively complex design in practice.

Load introduction is mechanically unfavorable when the roof membrane is mechanically fastened in the covered edge area, since the load is implemented asymmetrically and therefore considerable safety requirements are required.

In order to avoid these disadvantages, mechanical fastenings have been developed that can be provided on any part of a roof waterproofing membrane.

Confirmations have proven themselves, which ones

Penetrate the roof waterproofing membrane and thus enable a "through-membrane fastening".

A fastening of a roof sealing membrane is known from US Pat. No. 4,860,513, which contains a disc-shaped support element resting thereon with a centrally arranged passage opening. The wall of the through opening is designed to have a spherical shape toward the top, in order to receive a screw shaped head on the underside of a screw serving as a fastening means, through which the sealing membrane penetrates. The head of the screw is provided with a hexagon socket on its top. Due to the spherical shape of the screw head in the support element, the screw can be swiveled in relation to the level of the support element. However, the top of the head of the screw is exposed to the weather, so that if the screw connection is loosened, water can penetrate under the sealing membrane.

This disadvantage L is avoided by a fastening of a roof sealing membrane known from DE-Offenlegungsschrift 39 26 255 on a roof substructure with a pi Lz-shaped support element, the head of which rests on the roof sealing membrane and the hollow shaft of which penetrates the roof sealing membrane. The head of a screw serving as fastening means L is positively received by a conical section in the hollow of the shaft. An approximately umbrella-shaped covering element is screwed into an internal thread at the upper end of the shaft with a pin on the underside, which is the case

Support element overlaps and rests with its outer edge on the roof waterproofing membrane.

The screw is guided in the hollow of the shaft in the direction of the center salmon of the support element. When assembling the known fastening, the support element with its fastening means must first be screwed to the roof substructure. The cover element can then be screwed to the support element.

For adequate sealing, however, it is necessary that the screw is aligned as perpendicular as possible to the roof surface. In addition, the individual parts of the fastening must be stored, transported and installed separately from each other.

The object of the present invention is to provide a fastening of the type specified at the outset in such a way that it provides a reliable seal for the fastening part, even when the fastening is not exactly perpendicular to the roof surface

Fastening means is guaranteed and that storage, transport and assembly of the parts of the fastening device are particularly simple.

According to the invention, this object is achieved in that the support element is arranged in a height-changing manner in the interior of a hood-shaped covering element which is placed on the sealing sheet and is underneath by a floor plate, underside, its outer circumference being in engagement with the inner wall of the covering element in such a way that it at least in its upper or lower end position is rotatably connected to the cover element, and that the pivotable and force-locking connection of the upper end of the floor plate extending through the Fastener Ls with the support element through one in its

Swiveled and non-rotatably mounted articulated body is formed, which is non-rotatably connected to the upper end of the fastening means Ls.

The support element connected to the cover element including the joint body is a preassembled component

Available so that this can only be done with the

Fastener is to be connected. The lower opening of the hood-shaped cover element is through a from

Fastening agent L penetrated floor plate Locked to prevent penetration of the sealing agent into the interior of the cover element. The floor slab can be glued, welded to the cover element or by mechanical fastening means such as. B. Ba onettversch Lußtei Le, be firmly connected.

The assembled support element connected to the fastening means via the articulated body lies on the sealing membrane even when the fastening means pLan is installed obliquely and can deviate slightly when subjected to one-sided loading. The fastening according to the invention is particularly suitable for fastening roof waterproofing membranes, but is also suitable for other applications, for example, for film fastening in a tunnel.

A secure connection of the joint body with the

Fastening means is achieved when there is a

Recording with force transmission elements is provided, which can be brought into engagement with appropriately designed force transmission elements at the end of the fastening element protruding from the top of the sealing membrane, and if a limitation of the depth of penetration of the upper fastening element into the joint body in axial direction is provided. The force-transmitting elements can be designed as detents, as a bayonet fastener or, preferably, as a screw thread. The limitation in the axial direction can be carried out by executing the mounting as Blind hole or through a projection on the L fastener.

Depending on the substructure, the fastening means to be anchored in it with its lower end can be formed as a nail, as a screw or the like, whereby screw threads are usually carried out as a right-hand thread. The fastening means can be installed using an automatic setting machine or manually.

The pivotability and the securing against rotation of the joint body in the support element are advantageously achieved in that the underside of the joint body is formed in a spherical shape and that it has projections on its outer circumference, which are arranged in corresponding recesses in a spherical socket-shaped depression in the top of the Intervene support elements.

The projections on the outer edge of the articulated body can be formed in the manner of a hexagon socket or as springs, with the recesses in the support element being formed complementarily, in the case of a socket as a hexagon socket or as grooves.

Preferably, a container filled with a sealant is provided in the interior of the cover element, in the case of play a foil cushion that opens when the support element approaches its upper or lower end position and releases the sealant.

During assembly, the lower edge of the covering element lying on the sealing membrane can additionally be coated with a sealing agent, which provides a weather-resistant seal, in particular a weld, between the covering element and the sealing membrane. A commercial paste suitable for the respective material of the waterproofing membrane is recommended as a sealant. To transmit the forces from the support element to the cover element, connection elements are provided on the outer surface of the support element, which are in engagement with correspondingly designed connection elements on the inner part of the cover element.

Screw threads can be provided as connecting elements on the outer surface of the support element and on the inner surface of the cover element.

In the case of a right-hand thread formed between the outer circumference of the support element and the inner wall of the cover element, the container for the sealant L is arranged above the joint body in the center of the cover element, and in the wall of the cover element there are transport channels for the di leading to its lower edge means L provided. There is only one opening in the floor plate for the fastener to pass through.

In the case of a left-hand thread formed between the outer circumference of the support element and the inner wall of the cover element, the preferably toroidally shaped container for the sealant L is arranged between the support element and the base plate, and at least one passage for the sealant L is provided in this. This passage allows the sealant L to reach the lower edge of the cover element and is pressed there when the cover element is screwed on.

In a further embodiment, a non-rotatable connection can be formed between the outer circumference of the support element and the inner wall of the cover element, which consists of ribs engaging in grooves. The preferably toroidal-shaped container for the sealant is arranged between the support element and the base plate, and at least one passage for the sealant L is provided in this. The release of the sealant from the container when the support element approaches the base plate or the articulated body to the cover element is facilitated if at least one pointed projection is provided on one of the surfaces lying on the container for the sealant. In spi ewswei se pointed spikes or knife edges can be provided, which pierce or cut through the envelope of the container containing the sealant.

To screw on the cover element, a device for torque transmission can be arranged on the outside of the cover element, such as. B. a arranged on the top as a square formed pin or indentations. The outside of the side walls of the cover element can also be designed as a hexagon, for example.

A particularly tight connection is achieved if the lower edge of the covering element lying on the sealing sheet is covered with a layer of the material used for the sealing sheet, e.g. PoLyisobutene, PoLyvin LchLorid, bitumen or the like, is provided. It goes without saying that in this case, depending on the material of the waterproofing membrane, differently coated covering elements are to be used.

The material used for the support element, the base plate and the cover element is impact-resistant plastic, such as. B. hard polyvinyl chloride, recommended. When using this material, there is no need to coat the lower edge of a covering element that is intended for fastening a sealing membrane made of PoLyvinyLeh Lorid. The articulated body can also consist of the same material. If a high contact pressure is to be transferred to the cover element, a version made of MetaLL is preferred.

The invention is explained in more detail below with reference to two preferred exemplary embodiments shown in the drawing. It shows

1 shows a first embodiment of an attachment according to the invention with a cover element, a support element, a joint body and an attachment means in the assembled state in section,

2 shows the articulated body from FIG. 1 in a top view,

3 shows the support element from FIG. 1 in a top view,

Fig. 4 shows a second Ausführungsbei spi eL an attachment according to the invention in the assembled state in section and

Fig. 5 shows the support element from Fig. 4 in plan view.

In Fig. 1, a first exemplary embodiment of a fastening 10 according to the invention with a closed hood-shaped cover element 12, a disc-shaped support element 14, a joint body 15 and a fastening means 16 is shown in section on a roof with a sealing membrane 18 made of polyisobutene. A thermal insulation layer 20 is arranged under the sealing membrane 18, which lies on a steel sheet serving as a substructure 22.

The cover element 12 made of Hart-PoLyvin Leh orid has one

Outside diameter of 8 cm and a thickness of 2 cm. The lower edge of the cover element is widened in a ring to 2 cm.

The fastening means 16 is formed as a screw in the area of its lower end 24, which is anchored in the substructure 22. The upper end 26 of the fastening means 16, which protrudes from the top of the sealing membrane 18, is threaded 27 provided and screwed into a blind hole 28 of the joint body 15 with a corresponding internal thread 29.

The articulated body 15 shown in plan view in FIG. 2 consists of metal and has an outer diameter of 15 mm and a thickness of 6 mm. In the area adjacent to the mouth of the blind hole 28, the joint body 15 is formed on its underside in a cup-shaped manner with a radius of 7 mm and has two diametrically opposite projections 30, 32 in the outer edge.

The articulated body 15 is supported on the support element 14 made of hard polyLy Loreh d shown in plan view in FIG. 3, which is essentially disc-shaped and has an outer diameter of 4.5 cm and a thickness of 1 cm. The support element 14 has in the center an opening for the fastening means 16 and on its upper side a spherical socket-shaped recess 34 for receiving the joint body 15 and two diametrically opposite recesses 36, 38 into which the projections 30, 32 of the joint body 15 can engage.

The support element 14 is provided on its outer circumference 40 with an external thread which is in engagement with an internal thread provided on the inner wall 42 of the covering element 12.

On its underside, the covering element 12 is closed with a base plate 44, which has an opening in the center for the passage of the fastening means 16.

The fastening element 16 passes through the support element 14, the base plate 44, the sealing membrane 18 and the thermal insulation layer 20 and the substructure 22.

Diametrically opposite two transport channels 46, 48 are provided in the wall of the cover element 12, which lead from the center to the lower edge of the cover element 12. Between joint body 15 and Covering element 12 shows a pressed-out container 50, which is filled with a sealing agent 52 when the fastening 10 is in the supply condition. In the mounted state of the fastening 10 in FIG. 1, the sealing means 52 is extended through the transport channels 46, 48 into the space between the cover element 12 and the sealing membrane 18.

On the top of the cover element 12, as devices 54, 56 for torque transmission recesses are provided, into which pins of an assembly tool for screwing the fastening 10 can engage.

In Fig. 4 is in section a second exemplary embodiment of a fastening 110 according to the invention with a closed, hood-shaped covering element 112, a joint body 15, a disk-shaped support element 114 and one

Fastener L 16 shown in assembled condition. The

Execution of the joint body 15 and the fastening medium Ls 16 is, as is the support of the joint body 15 on the

Support element 114, the embodiment described above.

On the outer circumference 140 of the support element 114 diametrically opposite one another there are two ribs 141 which engage in grooves 143 in the inner wall 142 of the cover element 112 and thus prevent the support element 114 in the cover element 112 from rotating.

On its underside is the covering element 112 with a

Bottom plate 144, which has an opening in the center for the passage of the fastening element 16.

A toroidal pressed container 150 is shown between the support element 114 and the base plate 144 and is filled with a sealant 152 when the fastening 110 is in the delivered state. In the state of the fastening 110 shown in FIG. 4, the sealing means 152 is through the passages 154, 156 in the Bottom plate 144 gets into the space between cover element 112 and sealing membrane 18.

Claims

Patent claims

1.Fixing a roof waterproofing membrane or the like, consisting of a support element and of a fastening means penetrating this and the underlying sealing membrane, the upper end of which is pivotally and non-positively connected to the supporting element and the lower end of which is anchored in the substructure, characterized in that the supporting element (14 ; 114) is arranged in the interior of a hood-shaped covering element (12; 112) lying on the sealing membrane (18) lying on the underside and closed off by a base plate (44; 144), its outer circumference (40; 140) with the inner wall (42; 142) of the cover element (12; 112) is engaged in such a way that it is non-rotatably connected to the cover element (12; 112) at least in its upper or lower end position, and in that the pivotable and force-fitting connection of the the bottom plate (44; 144) extending upper end (26) of the fastener supply means (16) with the support element (14; 114) is formed by a joint body (15) which is pivotally and non-rotatably mounted in the upper side thereof and which is connected in a rotationally fixed manner to the upper end of the fastening means (16).

2. Fastening according to claim 1, characterized in that the upper end (26) of the fastening means (16) is provided with a thread (27) and in a blind hole (28) provided with an internal thread (29) in the underside of the joint body (15 ) intervenes.

3. Fastening according to claim 1 or 2, characterized in that the underside of the articulated body (15) is dome-shaped and that this has in its outer periphery projections (30, 32) which in corresponding recesses (36, 38) designed in a kugelpfanneniformi g Engage recess (34) in the top of the support element (14; 114).

4. Fastening according to one of claims 1 to 3, characterized in that in the interior of the covering element (12; 112) a container (50; 150) filled with a sealing means (52; 152) is provided, which when the support element (14 ; 114) opens to its upper or lower end position and releases the sealant (52; 152).

5. Fastening according to claim 4, characterized in that in the case of a right-hand thread formed between the outer circumference (40) of the support element (14) and the inner wall (42) of the cover element (12), the container (50) for the sealing means (52) above the joint body (15) is arranged in the center of the cover element (12), and that transport channels (46, 48) for the sealing means (52) leading to the lower edge of the cover element (12) are provided in the wall of the cover element.

6. Fastening according to claim 4, characterized in that in a between the outer periphery (40) of the support element (14) and the inner wall (42) of the cover element (12) formed left-hand thread, the preferably toroidal shaped container (50) for the sealing means (52) is arranged between the support element (14) and the base plate (44), and in that at least one passage is provided for the sealing means (52).

7. Fastening according to claim 4, dadurchgekennzechnet that in a between the outer circumference (140) of the support element (114) and the inner wall (142) of the cover member ⁽ 112) trained non-rotatable connection, the ribs (141) engaging in grooves (143) ), the preferably toroidal container (150) for the sealant (152) is arranged between the support element (114) and the base plate (144), and that at least one passage (154, 156) for the sealant (152) is provided.

8. Fastening according to one of claims 4 to 7, so that at least one pointed projection is provided on one of the surfaces of the container (50; 150) for the sealing means (52; 152).

9. Fastening according to one of claims 1 to 8, so that a device (54, 56) for torque transmission is provided on the outside of the cover element (12; 112).

10. Fastening according to one of claims 1 to 9, so that the lower edge of the cover element (12; 112) resting on the sealing membrane (18) is coated with a layer of the material used for the sealing membrane (18), such as e.g. Polyisobutene, polyvinylchloride, polymeric gymnastics, or the like., Is provided.

11. Fastening according to one of claims 1 to 10, that the cover element (12; 112) and / or the support element (14; 114) made of an impact-resistant plastic, such as e.g. Hard polyvinyl chloride exist.