DK2759652T3

DK2759652T3 - Roof tiles WITH HORIZONTAL OPENING

Info

Publication number: DK2759652T3
Application number: DK14150721.0T
Authority: DK
Inventors: Dirk Willen; Falk Lindner; Sven Günther; Yücel Celebi
Original assignee: Monier Roofing Components Gmbh
Priority date: 2013-01-23
Filing date: 2014-01-10
Publication date: 2015-09-14
Also published as: DE102013100646A1; EP2759652A1; PL2759652T3; EP2759652B1

Description

The invention relates to a roof tile having a main body which comprises an opening, said opening being surrounded by a coliar which comprises fastening elements on its side facing the opening, said fastening elements forming a fastening connection with counter fastening elements on an attachment which can be Placed onto; the opening. DE 100 22 825 A1 discloses a roof tile having a main body which is made of plastics material and comprises an opening which is surrounded by a collar, onto which a dome of a ventilator dome can be placed. DE 10 2006 003 478 A1 describes a tile having a tlrough-hole, comprising an opening, the edge of which forms a collar, from the inner side: of Which fastening elements project, said fastening elements forming a fastening connection with counter fastening elements on an alaehmsnt part which can be placed onto the opening. Heri, tie collar is formed by an adapter having a circumferential flange which follows the contour of the roof tile. The adapter is connected to the main body by means of fixing elements or an adhesive. w DE 201 17 618 U1 describes a generic roof tile having a main body which comprises a circular opening in which a resilient rubber insert is arranged; said insert sealingly closing the opening around the edge, few© supports, which are trapezoida! in the manner of an ova! and form conical bushes, prelecting ftom a membrane-like base layer having a false bearing. DE 101 39 225 AT describes a roofing sheet having a through-opening fora ventilation pipe. A cowl bearing the ventilation pipe sits in a pivotable manner on a dome which is formed integrally on and of the same materia! as a main body.

The object of the irivenSoh is to disclose a tile having a through-hole which is easy to prod uce and the collar of which can be connected to an attachment.

The object is achieved by the invention specified in the claims.

According to the invention, the collar comprises an inner part which is formed in particular by an annular part and is fastened to the main body by a fastening portion of the main body being placed on in a manner that follows the contours thereof. The fastening portion is placed, in å contour-following manner, on the side of the inner part facing away from the opening. Here, the inner part forms at ieast one interlocking element which is interlocked with the fastening portion. The interlocking connection is formed during the production of the main body. For this purpose, the main body is moulded around the inner part in a thermoforming process. The inner part is an insert which is inserted into a corresponding recess in the thermoforming mould so that the plastics materia! forming the main body can be moulded around the outside of the inner part. The interlocking means is preferably a web, such as a circumferential web. This web has the shape of a rib which runs along the outside of the inner part. The fastening portion of the main body runs closely around this rib when the main body is thermoformed during the thefmofofming process. Said portion thiis forms an interlocking groove; in which the circumferential web engages. The insert has ventilation holes; ih particular in the region of the interlocking means. These ventilation holes are aligned with ventilation holes in the thermoforming mould. During the thermoforming process, aeration takes place through the ventilation holes, allowing the material of the main body, which material is plastically deformable as a result of heating, to be positioned around the interlocking means. The fastening portion thus forms a thermoformed undercut by which the inner part is fastened to the pain body with an interlocking fit and which also reinforces the collar. The thermoforming mould has recesses into which the latching lugs or latching tabs of the insert can engage. These latching tabs project into the free cross section of the opening and can engage in latch windows in an inner wail of a fastening flange on the atta:OhPehti:::saidlrtner'Wall being inserted into the opening. In the process, an outer wall of the flange overlaps the collar so that the collar, and in particular also a sealing ring which surround'’ the collar, lies inside anannular groove in the attachment. The fastening elements can be snap-on lugs or spring tabs, which can be displaced out of the cross section of the opening such that they can; return resiliency, and which can deflect into latch windows. The thermoforming process is carried out using a non^perforated plastics blank. This blank is moulded over the insert;. A water course and an overlay which are typical of roof tiles are formed. During the thermoforming process, preferably none of the undercuts of the thermoforming mould are engaged from behind. Drily the circumferential web of the insert is engaged from below, with an interlocking fit, by the main body. However, this insert is removed from the mould during the mould removal stage so that the roof tile Is easy to remove from the mould. After cooling, the insert enclosed with an interlocking fit is thus removed from the tool togefior with the tile having a through-hole. The edge and hole are then trimmed in the known processing stages, in a first variant of the invention, the inner part can be formed by a narrowsannuiar part, which is overlapped in; some regions by an edge portion of the main body. The edge of the opening visible in a plan view is then formed by materia! of the main body: in a further variant, however, it is aiso provided that the inner part forms a dome, as described in DE 10Θ 22 825 A1, on which the cowl of a roof vent can be placed, it is possible for the insert to be subsequently replaced if, for example, it is heid in place with an interlocking fit by the attachment placed thereon, If is therefore easier for the roof tile to be recycled if the insert and main body are produced from the same materials. In the drawings:

Fig. 1 is a perspective view of a tile having a through-hole according to the Invention, having a dome pieced on top,

Fig. 2 is a section along the line i!-ll in Fig. 1,

Fig. 3 shows a thermoierming mould for producing the roof tile according to the invention,

Fig. 4 shows the thermoforming mould in accordance with Fig. 3 with the insert 10 inserted into the mould,

Fig, 5 is a foliow-up drawing to Fig. 4 and shows the tile laving a through-hole after the main body has been thermoformed, and

Fig. 6 shows the tile having a through-hole according to the invention after It has: bee!: removed from the mould.

The tile having a through-hoie consists of a main body 1 which is produced in a thermoforming process. For this purpose, a thermoforming mould 30 (cf. Fig. 3, 4 and 5} is used which forms the negative mould of the underside of the tiie having a through-hole. The thermoforming mould 30 has a mould portion 31 which protrudes with respect to the surrounding region of the mould and which forms an annular step 32, into which an insert 10 can be inserted. Since the insert 10 has undercut elements, the thermofdrming mould 30 has recesses 33 which the undercu: elements of the insert 10 can enter. The undercut elements are latching tabs 12.

The insert 10 is a ring made from plastics material. The insert 10 can be produced by means of injection moulding. In the embodiment the insert 10 is a narrow ring which appears ova! when viewed from above. The insert 10 delimits an opening 7 and forms a side facing the opening 7 and a side facing away from thesopening 7. The insert 10 forms an annular web 11 along the side facing away from the opening 7, said web extending over the entire circumference of the insert 10.

Latching tabs 12 are {pend on the side facing the opening 7 and project into the cross section of the opening. The latching tabs 12 are resiliency outwardly bendabie in the direction of theoutsideof the insert 10. The latching tabs 12 extend perpendicuiariy to a piane which is defined by the edge of the opening in the insert 10.

The insert 10 has ventilation holes 13 In the region of the annular web 11, said ventilation holes aligning: with ventilation holes 34 in the: thermoforming mould 30 when the insert 10 is inserted Into: an annular recess which is formed by an annular step 32 (of. Fig. 4). In this state, the upper outer edge of the insert 1f Is aligned with the planar end face of the mould portion 31. Ét a temperature It Which a blank which is made of plastics material and forms the main body 1 is plastically deformabie, the blank which forms the main body 1 is thermpiprmed by means of the thermoforming mould 30 (of. Fig. 5). The space between the underside of the blank and the thermoforming mould 30 is evacuated of air via ventilation holes and in particular via the ventilation hole 34 or 13 so that the thermo-ductile blank conforms to the surface contour of the thermoforming mould 30 and the surface contour of the annular part 10 inserted into the thermoforming mould 30. In doing so, the blank of the main body 1 shapes the opening clearance in the insert 10 and forms a negative undercut in the shape of an interlocking groove 5 in the region of the annular web 11. This undercut^ that is to say the interlocking groove I, is preferably the only undercut formed during the thermoforming process. Éfter cooling, the main body 1 and the insert 10 Which is enclosed thereby with art interlocking fit are removed tom the mould. Then, the edge arid the opening 7aretrimmed so that an opening edge 6 of the main body 1 surrounds the opening 7. Fig, J shows the completed tile having a through-hole, without an attachment placed oh top. Fig. 1 shows a tile having a through-hole, with a dome placed on top. The cross section of the entire collar can be seen in the section shown in Fig, 2. in the embodiment, the opening edge# rests on tint upper outer edge of the insert 10. "The insert 10 forms a collar which fellows the edge of the opening 7.

An attachment 20 can be placed on this collar 10. The attachment 20 may be a ventilating fan, a bushing for cables or pipes, or any other unit which can be fitted to a roof.

The attachment 20 shown in Fig. 1 and 2 is a dome 25 in which a ventilation pipe having a cowl can be inserted. The dome 25 is integrally formed on the underside of a fastening flange 26. The fastening flange 26 has an inner web 23 which can be inserted into the opening 7. in this case, the inner web 23 is positioned on the inner wail of the insert 10. The inner web 23 has windows 24 into which the latching tabs 12 of the insert 10 can latch in ordif to connaci the attachment 20 to the tile having a through-hole.

The fastening flange 26 overlays the collar and in particular overlays the opening edge 6, a portion of the main body 1, and the portion, connected thereto, of the iosei 10. This collar is thus overlaid by a wall 22 of the fastening flange 26. The collar is positioned in an annular groove 21 formed by the wall 2 2 and the inner web 23. A sealing ring 27 'which surrounds the outer wail of the collar 10 is also positioned in the annular groove 21. The sealing ring 27 is positioned between a portion of the main body 1 and the wail 22.

The downward facing edge of the wall 22 of the fastening flange 26 can rest on the Outer wall of the region of the fastening portion 4 which forms the interlocking groove 5. This forms a watertight region between the attachment 20 and the main body 1 because the fastening portion 4 engages in the annular groove 21 and is made watertight with a sealing ring 27.

Different kind? of attachments 20 can be connected to an insert 10 which is formed as a standard element.

The aforementioned embodiments are used to explain the invention which independently improves the prior art at least by means of the following combinations of features, namely: A tile having a through-hole according to claim 1, which is characterised in that the collar comprises an inner part 10 which is in particular produced from plastics material and is fastened to the main body 1 by a fastening portion 4 of the main body 1 being placed on the side of the collar facing away from the opening 7 so as to follow the contours thereof at least in some regions. A tile having a through-hole according to claim 1, which is characterised in that the main body 1 is a thermoiormed, in particular deep-drawn, plastics body. A tile having a through-hole according to claim 1, which is characterised in that the side of the inner part 10 which faces away from the opening 7 forms at least one interlocking element 11 which is in an interlocking connection 5 with the fastening portion % A tile having a through-hole according to claim 1, which is characterised in that the interlocking means on the in particular annular inner part is a web 11, in particular a circumferential web, which is positioned in an interlocking groove 5 in the main body 1, A tile having a through-hole according to claim 1, which is characterised in that the fastening elements 12 project into the cross section of the opening 7. A tile having a through-hole according to claim 1, which is characterised in that the fastening elements 12 can be displaced out of the cross section ollhe opening such that they can return resfiantly. A tiie having a thfough-hile according to claim % which is characterised in that the fastening elements 12 form Snaptoh lugs or spring tabs which latch into latch openings 24 In the attachment; 20, A tile having a through-bole according to claim 1, wmch is characterised in that the inner part 10 is formed by an insert which is inserted into a thermoforming rrtouid 30 before the main body 1 is thermoformed and; over which the main body 1 is thermoiormed. A tile having a through-hole according to claim 1, which is characterised in that the roof tile comprises an attachment 20 which is in the form of a dome 25, a ventilation element, a bushing for cables or a bushing for aerials, and which comprises counter fastening elements 24 which are connected to the fastening elements; 12.

All the disclosed features are essential to the invention (separately and also in combination with one another). The features of the dependent claims characterise independent inventive developments of the prior art.

List of reference numerals 1 Main body 2 Overlay 3 Water course 4 Fastening portion 5 Interlocking groove 6 Edge of the opening 7 Opening 10 Insert, annular part, inner part, collar 11 Annular web, interlocking element 12 Latching tab, fastening elements 13 Ventilation hole 20 Attachment 21 Annular groove 22 Wall 23 inner web 24 Window, counter fastening elements, latch openings 25 Dome 26 Fastening flange 27 Sealing ring 30 Thermoforming mould 31 Mould portion for the opening 32 Annular step 33 Recess for the annular step 34 Ventilation hole

Claims

A through-opening roof tile comprising a main body (1) consisting of a plastic material and an opening (7) surrounded by a collar (10) which has fastening elements (12) on the side facing the opening (7), capable of forming a fixed connection with counter-fasteners (24) to a mounting member (20) which can be mounted on the opening (7), the collar comprising an inner portion (10) made in particular of plastic material and in turn facing away from the aperture (7) forms at least one molding connecting member, characterized in that the inner portion (10) is formed as an insertion member for insertion in a deep drawing form and the molding connecting member is attached to a fastening section (4) on the main body. (1) by deep drawing the main body (1) over the inner part (10) at least regionally in contoured abutments.

The through-opening roof tile according to claim 1, characterized in that the main body (1) is a thermoformed plastic body.

Through-opening roof tile according to any one of the preceding claims, characterized in that the molding connecting means on the particularly annular inner part is a web (11), in particular a peripheral web, which is positioned in a molding groove (5). the main body (1).

A through-opening roof tile according to any one of the preceding claims, characterized in that the fastening elements (12) project into the cross-section of the opening (7).

5. Through-opening roof tile according to any one of the preceding claims, characterized in that the fastening elements (12) can be displaced out of the opening cross-section and can return elastically.

A continuous opening roof tile according to any one of the preceding claims, characterized in that the fastening elements (12) form snap edges or elastic tabs which snap into locking openings (24) in the mounting element (20).

A through-opening roof tile according to any one of the preceding claims, characterized in that the roof tile comprises a mounting element (20) in the form of a dome (25), a ventilation element, a cable entry or an antenna passage, and comprising counter-fastening elements. (24) connected to the fastening elements (12).

A through-opening roof tile according to any one of the preceding claims, characterized in that the inner part (10) and the fastening part (4) form two layers of a studs-shaped collar (10), which two layers can only be separated from each other on a destructive way.