EP0585737A1 - Flat roof-tile - Google Patents

Abstract

The flat roof tile (1) forms a horizontal head and side expansion joint when laid and, owing to its rebating, causes multiple overlapping. The outer and inner head interlocking rib (213, 217) merges, without interruption in each case, into an outer and inner side interlocking rib (513, 515), respectively. In each case a single cutout is present in the foot/side interlocking corner (48) and in the head/top interlocking corner (29). The aim of the invention is to provide a flat roof tile which is of the greatest possible format, having a large degree of head clearance, and in the case of which, even where the tiles have slid to an extreme degree, protection from rain is ensured in the corner between four tiles, to be precise even when the tiles are laid with a roof inclination of less than 22 DEG . This is achieved in that the foot/side interlocking corner (48) has only a single corner cutout (486) to which there is assigned, over its entire width, a receiving surface (5137) which, when laid as part of the roof covering, is overlapped over its width by a portion (4251) of the inner foot interlocking rib (425) which is located on the underside of the top interlocking part (3). <IMAGE>

Description

The invention relates to a flat roof tile with a horizontal head and side parting line when laying and a multiple overlap causing head, side, foot and deck interlocking, as well as with a cut-out in the bottom side seam fold and a single cut-out and a plateau in the top corner fold.

From the European patent 198 479 a interlocking tile of the aforementioned type is known, which has proven itself in practice. The head clearance of the head fold corresponds to approximately 2 to 3% of the deck length, it serves to compensate for any differences in shrinkage.

A high headroom is a danger to the rainproofness of the covered roof. The four-brick corner in particular is always a weak point because there are easily leaks there. To lock it, only the rectangle is available, which is formed by the width of the side cover and the width of the head cover. To make matters worse, the entire head and side clearance must also be taken into account in the area of the four-brick corner.

According to the recognized rules of the roofing trade, flat roof tiles may only be laid up to a minimum roof pitch of 22 ^o . With lower roof pitches, experts fear rain safety in stronger winds. The most critical case occurs when the wind, seen from the middle of the field arriving at a slight angle, blows rain or snow into the fold of the four-tile corner. In this case, the experts expect the overlapping of the head or side folds, or the entry of rain into the four-tile corner, particularly in the case of flat-pitched roofs, since the dwell time on the Rainwater running off the roof increases with a flatter roof pitch.

For reasons of competition with other roofing elements, however, it is imperative to fall below the previous standard roof pitch of 22 ^o for flat roof tiles. The technical rules of the roofing trade have allowed a minimum roof pitch of up to 7 ^o for corrugated bitumen sheets and a minimum pitch of 15 ^o for bitumen shingles with rafters up to 10 meters long, not to mention the flat roof with 3 ^o .

The problem of rain safety also increases because a large headroom is desired for a simple reason. If a scale-like roof element, such as a flat roof tile, has a large headroom, the roofer is able to adjust to the specified roof lengths by pushing or pushing the tiles, i.e. by changing the length of the deck, without using intermediate tiles, such as cross members have to. Such special bricks, such as cross halves, are expensive because they are only required and manufactured in small numbers. Cross-half bricks also change the cascade shape of the roof and thus the flow model of the entire roof area.

It could be observed again and again that water was being introduced in the area of the row with transverse bricks. Due to the base of a roof tile, an overpressure area is created in the lower third of the tiles. With half-round bricks, this overpressure area is often in the area of the four-brick corner, which immediately follows the row with half-round bricks.

For economic reasons and because of the desired rain safety, a relatively large headroom is desired in order to avoid the transverse half-brick that is still used today.

The headroom should be designed so large that a row of bricks can be compensated by pushing or pushing from a rafter length of 5 meters. With a relatively large-sized brick, this corresponds to a headroom of at least 30 mm.

With drawn or pushed bricks, the flow model changes very significantly, especially as in extreme situations, i.e. in a fully pushed or pulled condition, due to the occurrence of capillary traction between the bricks, which are very close together on two flanks in the fold, the risk of Water entry is increased.

When manufacturing, transporting and laying roof tiles, their size and surface area play a role. The goal of every manufacturer is to use as little roof tiles as possible to reduce both material costs and installation costs per unit area. Concrete roof tiles have been installed for a long time with only 10 pieces per square meter. Due to this competitive situation, the clay roof tile repeatedly suffered market disadvantages.

Although this goal has been pursued for a long time, it is difficult to achieve. Flat roof tiles are pressed from clay, dried and fired. This natural material has a total shrinkage of between 7% and 10%.

The total shrinkage remains proportional to the surface area, but the curvature caused by the shrinkage increases exponentially with the enlargement of the surface area and thus of the individual brick. For this reason, flat roof tiles cannot be arbitrarily enlarged.

The individual goals listed above are mutually opposed. An increase in headroom causes more rain insecurity especially in the four-tile corner. An increase in the surface area leads to more and, in particular, stronger curvatures, and everything taken together contradicts the desire to lower the standard roof pitch below the previously usual 22 ^o rafter pitch.

The aim of the invention is a roof tile as large as possible with the greatest possible headroom, which ensures such a high degree of rainproofness even in extreme situations, that is to say when pulled and pushed, that this tile can also convince the professional world that the minimum roof pitch of 22 ^o , which has been in effect since the 1930s, can be ^fallen below.

The object of the invention is to improve the drainage and the rainproofness of the side folds, in particular in the four-brick corner with a lower rake tendency.

This object is achieved in that the foot side corner has only a single corner cutout, to which a receiving surface is assigned in its entire width, which is covered when covered in width by a section of the inner foot seam rib, which is located on the underside of the top seam part.

The flat roof tile according to the invention primarily has a rectangular plan, the top fold part is rectangular. This saves costs because right-angled drying frames and cassettes can always be used to save space.

The receiving surface downstream of the single corner cut-out of the foot gusset creates space for the inner foot rebate rib when covering. It can be significantly higher this way be designed and provide an additional seal in the four-tile corner. Rain resistance increases because the inner rebate rib lies on the receiving surface when covering and thus forms an additional barrier for sealing the foot-side end of the side rebate of the covering tile.

The headroom can be increased with this flat roof tile without fear of a leak in the four-tile corner. On the contrary, the receiving area downstream of the foot-side corner cut-out provides for increased headroom with improved sealing in the four-tile corner.

From EP 198 479 of the generic type it is known that on the underside of the brick an outer top fold flank opens into an outer foot fold rib. The inner foot rib, on the other hand, ends below the cover fold part.

In the invention, there is now an advantageous development in that the inner foot rib extends to the outer cover fold flank and rests with a section on the receiving surface when covering and the inner foot fold rib opens flush into the contact surface of the outer cover fold flank, so that the same and the foot fold rib form a level.

The inner foot rebate rib according to the invention runs essentially - following the profile of the brick - at the same height over the entire width of the brick and just ends in the contact surface of the outer top seam flank. As a result, the inner foot rebate rib has been pulled down much more deeply than in the prior art, especially in the critical area in front of the side folds of the covered tile, and has prevented this so far unfavorable blowing into the side rebate part of the covered neighboring tile.

The generic flat roof tile has an outer or inner top rebate rib, which merges into an outer or inner side rebate rib without interruption. The side fold has an outer and inner side fold rib, between which a side fold groove is arranged. The entire side rebate is covered by the top rebate part of the neighboring tile when covering.

The invention is now further developed in such a way that the receiving surface extends over the entire width of the side folds and that a support surface extending in the longitudinal direction of the brick is adjacent to it in the side seam fold cutout, which is optionally flat with it or with the center field or with both.

When covering, the underside of the cover rebate part of the adjacent tile lies on this contact surface and thus closes the foot-side rebate corner from said midfield.

On the back of the tile of the flat roof tile according to the invention, an area is advantageously arranged in the base side corner cut-out which is as wide as the side fold part and its length corresponds at least to the added width of the outer top fold rib and the top fold groove. This area can be laterally limited in its entire length by a condensation water rib, which can be guided to the inner foot rib in view of the desired sealing of this area.

When covering, the area provided in the foot-side gusset corner cutout lies on an approximately equally large area of the head gusset corner cutout. With this edition, the four-tile corner is sealed on the one hand, but at the same time the surface coordination of the two surfaces ensures the flexibility in the longitudinal direction of the brick and thus the headroom.

In order to increase the air resistance between these two and thus the tightness, it is advantageous to make these sealing surfaces as large as possible.

In an advantageous further development of the invention, it is provided that the outer side rebate rib is led through to the receiving surface and before that it changes into a hook-shaped, equally high bend directed towards the central tile field.

With regard to the sealing of the four-tile corner, it is advantageous if the outer foot rebate rib is divided into two parallel branches between the cover seam part and the foot side seam corner cutout, between which there is a groove. The inner foot rib can have an offset in the area of the cover fold part. It can also be guided flush at the same height - following the outer profile of the flat roof tile - from the bottom side seam corner to the outer top seam edge.

The outer foot rib is ramified in this embodiment and divides into two separate sections. When covering, the two branches lie on the central tile field of the covered brick and, at the same time, form a double wind wall with the overlay, which closes the head fold of the covered brick towards the eaves. The separation of the foot rebate rib into two branches enables a swirl chamber there, which makes the rain rain. The two branches not only seal the top interlocking of the covered tile, but also any overflow of the inner top interlocking rib and the top interlocking part of the adjacent flat roof tile in the area of the four-tile corner. Even with an unfavorable inflow of On the eaves side, they prevent rain and snow from blowing in.

In combination with the ramification of the outer foot rebate rib, it is advantageous with regard to a desired large headroom if an inner foot rebate rib has a bend in the area of the cover fold part and in particular is guided flush at the same height from the foot side fold corner to the outer cover fold flank.

When covering, the offset bends on the receiving surface in front of the foot-side end of the side fold. In this way, it can be made considerably higher than in the prior art and provides additional coverage in the critical four-tile corner. At the same time, the tread resistance of the tile is increased in the top rebate area.

In the invention it is provided as a further development that the outer side rebate rib is led through to the receiving surface and before that it changes into a hook-shaped, equally high bend directed around the central tile field.

This training completes the side folds towards the brick base. At the same time, the drainage of the side rebate groove towards the central brick area is made possible.

In order to prevent the water flowing out of the side rebate from being pushed back into the foot gusset corner cutout by wind, it is advantageous if a second hook-shaped bend is present between the water switch arranged at the foot end of the side rebate groove and the first bend in the outer side rebate rib. which forms a U-profile with the first bend and in the foot-side end area of the outer side rebate rib and includes a lowered surface.

The two hook-shaped bends serve several purposes. By relocating the water switch from the brick base towards the brick head, the water collected in the side rebate groove is kept away from the critical four-tile corner, and the water flow towards the central brick area is improved. The U-shape of the two bends and one end of the outer side rebate part increases the section modulus of the brick in this area.

The U-shaped arrangement of the bends also ensures a previously unknown swirl space in the area of the sunken area, which prevents rain and snow from blowing in, especially when the wind is clear. The U-profile shields the water switch and ensures a calm drain.

In general, regarding the two bends and the U-profile between them, it should be noted that when the wind flows in the lower third of each row of bricks - due to the footstep - an overpressure area is created, in which rainwater is pressed over the side folds, especially in the lower quarter of the brick.

The rainwater pressed into this area can relax due to the two hook-shaped bends in the area of the U-profile or the lowered surface in the chamber created in this way. As a result, in particular in gusty winds, the fluctuating pressure conditions that occur in the area of the brick base and the side folds can be compensated in an exemplary manner.

It is advantageous if the lowered area within the U-profile is higher in level than the central tile field. The same applies to the water switch. The higher level prevents water on the central tile field from flowing back into the depression.

In order to ensure the tightness in the foot area of the side folds, it is advantageous if the folds have the same height as the adjacent side fold rib.

In a further development of the invention, it is provided that the outer top rabbet rib is to be carried out without interruption from the top side seam corner to a pin located in front of the sealing surface of the top hat seam corner, and to provide a transverse rib in an extension of this rib which closes off the sealing surface on the head side. The cross rib extends primarily over the entire width of the sealing surface up to the top deck fold. When the tiles are covered, this transverse rib engages in the sealing surface, as it is in the form of a hollow on the underside of the cut-out corner of the foot.

The transverse rib arranged in the top deck corner in the extension of the outer top rabbet rib limits the sealing surface there to the brick end at the head end. The same applies to the rib piece arranged on the rear of the brick on the edge of the foot-side seam corner cutout, which closes the sealing surface located there laterally from an inner foot-seam rib to the foot end of the foot-side seam corner.

When covering, the ribbed part lies on the top of the sealing surface in the top deck seam and forms a sliding block. This not only significantly increases the circulation, but also the tightness in the four-tile corner.

A further improvement of the tightness in the four-tile corner is achieved by the deflection rib optionally available between the outer and inner top rabbet rib, which extends from the tenon in the longitudinal direction of the brick to the inner top rabbet rib, or to its hook-shaped continuation rib extending over the top rabbet part.

With regard to the desired headroom, it is advantageous if the free space of the sealing surfaces arranged in the top-corner or bottom-side seam corner is dimensioned so large that it corresponds to the desired displacement range. In the drawn state, the flank of the rib piece facing the head part rests on the flank of the transverse rib facing the foot part. In the pushed state, on the other hand, the flank of the rib section facing the foot side corner cutout is in contact with the hook-shaped deflection of the top rabbet rib of the underlying tile.

According to a further development of the invention, the receiving surface arranged in the area of the foot gusset and preceding the kinking of the outer side gusset rib can be associated with a hump, which is covered together with the receiving surface during covering by the section of an inner foot gusset rib and for receiving the hump at the transition to outer cover seam flank has a recess.

The hump is located in the area of the foot gusset and precedes the kinking of the outer gusset rib, preferably slightly offset. It closes the receiving surface in the direction of the central brick field. It has two functions. First of all, it serves as a water switch in order to safely transfer the water collected in the side folds to the central tile field and to prevent it from flowing into the bottom seam fold. Furthermore, it serves as a wind barrier against blowing into the folds of the feet.

Due to the particularly space-saving construction of the two corner cut-outs in the top rebate and foot rebate corner, it can happen, especially in the case of drawn bricks, that the rainwater running in on the side rebate groove drains back into the side rebate groove of the underlying tile, which means that First, more and more water can get into the side groove in the eaves and there is a risk of it overflowing in the eaves area.

The hump according to the invention now provides a remedy. When covering, the hump is covered by a recess in the inner foot rib, which is designed so that the overlapping tiles can also be moved against each other. The desired sealing in the four-tile corner is nevertheless given.

In this sense, it is also advantageous that the hump is located in front of the free end of the bend and extends from this end to the end of the bottom side corner section. It extends primarily over the entire depth of the receiving surface and closes it off in the direction of the central tile field. Its height is preferably only half as high as the outer side fold rib or its kink.

In an advantageous development of the invention, a groove is provided on the inside of the top seam flank, which extends from the top deck to the bottom deck fold and lies in one plane with the recess. When covering, this groove prevents the inner cover seam flank of the covering tile from directly contacting the flank of the inner side rabbet rib facing the central tile area. There, a free space is created over the entire length of the inner side rebate rib, which enables a calm water drain in the eaves direction. At the same time, the direct contact of the inner cover seam flank with the base of the inner side fold rib is prevented.

The above-mentioned problems arise in particular in the case of unfavorable inflow conditions, especially when the rain is blown from the bottom right onto the outer cover seam flank of the covering tile. In this case it can happen that rainwater gets between the inner side fold rib and the outer cover fold flank to an increased extent. The invention Nut is able to remove this additional amount of water approximately with a calm flow.

In order to promote this water drainage, but to protect the head interlocking of the covered brick from covering with water when covering, it is advantageous if the groove extends close to the outer edge of the head cover seam corner cutout and the contact surface of the outer cover seam rib there as a hook-shaped kink as the end of the groove forms. In this way the interlocking of the covered tile at the end of the groove is secured again.

In order to drain the side interlocking relatively quickly and thus to prevent water from entering the interior of the roof beyond the side rebate rib in unfavorable wind conditions, it is advantageous if the second hook-shaped bend to form an oblique drainage within the water switch runs at an acute drainage angle in the direction of the brick center area. This angle can be in a range from 35 ^o to 65 ^o , in particular 45 ^o , in order to accelerate the water drainage. This gives the water sufficient propulsive force in the direction of the central tile field, it is deflected from the critical cutout at the bottom of the foot.

The same applies to the oblique orientation of the head flank of the first bend and the somewhat oblique head flank of the hump.

In another embodiment of the invention, the second kink has an inner extension rib, which is primarily in alignment with the inner side fold rib and parallel to the outer side fold rib. It preferably extends to shortly before the first kink and ends there before the opening of the water inside the outer side fold rib, the two Bends and the extension rib delimited, lowered area.

For the drainage of this lowered area, it is favorable if it is higher in level than the central tile field and / or the water switch. Increasing the levels prevents the water on the brick center field from flowing into the depression or the water switch, for example due to unfavorable wind currents.

A rib piece can engage in the said lowering, which is located in front of the middle top seam rib at the foot end. This rib piece soothes the interior of the lowered surface and prevents the entry of indentations into the top rebate area of the covering tile even in the case of unfavorable wind currents.

Burnt clay is hydrophilic. This material-specific advantage was never consistently used in the known roof tile models.

This is now provided in the invention. Water that collects on the back of the brick, for example spray drops that have been introduced via the outer side rebate rib, should be drained off in a targeted manner. For this purpose, on the back of an advantageous development of the invention along the entire length of the side rebate part there is a longitudinal bar arranged on the outer brick edge of the side rebate part, which preferably extends at the same height from the top side seam corner to a stacking bump arranged in the foot side corner, from which a condensation rib to the inner one Foot fold rib runs. This longitudinal bar is guided along the edge of the brick and is not interrupted, so that spray drops reach the stacking hump via the longitudinal bar and the inner foot rib via the condensation water rib. From there they will be at of the covering in the head interlocking of the covered tile and removed.

In order to be able to carry out this longitudinal ledge at the same height from the brick head to the brick base, the support bumps usually present there are laid inwards.

In order to prevent the longitudinal bar from resting on roof battens, a support bar is provided in a further development of the invention, which is arranged at the head-side end of the rear of the tile in the region of the side rebate part. It should be higher than the longitudinal bar to prevent it from being placed on roof battens. It is primarily dimensioned so long that the tile in the area of the top-side seam corner rests on the roof battens only with the aid of the support strip.

In the known flat roof tiles, the width of the side rebate groove is such that it provides sufficient free space for the covering for the middle top rebate rib. If the bricks are pushed or pulled in width, this has the disadvantage that water is driven into the back of the brick to an increased extent. In order to counter this circumstance, the invention advantageously provides for the outer flanks of the outer and inner side fold ribs to be assigned a smaller distance from one another than is the case with the inner flanks of the cover fold part and the inner cover fold rib, so that when covering the middle cover fold rib is neither in pulled still touches the inner flanks of the inner or the outer side fold rib in the pushed state.

In conventional flat roof models, the top rebate groove is at about the same height as the middle field. In order to keep it higher in the area of the water switch than the middle field in order to implement a tear-off edge, the side rebate groove is removed from the area of the top corner fold raised. This creates a kink in the side groove where a water bag can form. In order to avoid this water sack, an overflow head is often arranged in the area of the head side fold corner on the inner side fold rib. This overflow head represents an opening in the endangered four-tile corner, through which heavy droplet entry can occur. It is therefore proposed to slightly raise the surface of the side rebate groove slightly below the head side rebate corner in order to obtain the desired step on the water switch. The angle of inclination should not be greater than 5 ^o . With the desired minimum roof pitch of 14 ^o and a brick pitch of 6 ^o , an increase in the water switch of 9 ^{o would result in} a flat surface and delay the water drainage.

In the area of the inner top seam flank of the back of the tile, it is known to provide an inner top seam rib, which usually ends at the inner top seam flank via a kink. The disadvantage here is that spray drops that run along this inner top seam rib in the foot area drip off and thus reach the interior of the roof.

In the invention, this disadvantage is remedied by the fact that the inner cover fold rib opens at its foot end into a tapered and lowered extension rib, which is led up to the inner foot fold rib, or until it is bent. This extension rib, also known as the sword, guides attached water droplets to the inner rebate rib, from where they reach the top fold area of the covered tile and are removed when covered.

In order to adequately drain the head fold, it is advantageously provided that the inner head fold rib and the continuation rib overlap in the end region of the middle field on the cover fold side and there an overflow for the head fold form the opening direction parallel to the transverse axis of the brick. By overlapping and arranging the overflow parallel to the transverse axis of the tile, even in unfavorable flow conditions, the free entry of water on the tile center field is prevented in the interlocking of the head.

The depth of the overflow head can be such that it forms a flat connection between the top rabbet groove and the center field.

With regard to the engagement of the folds when covering, it is also advantageous if the extension rib of the inner top rabbet rib is positioned in front of the brick center panel. One of the two ribs, primarily the continuation rib, can be released in the overlap area in order to make it difficult or free to flow freely into the head region and still ensure the free outflow. The notching can take place in such a way that the overflow narrows steadily or discontinuously in the direction of the top rabbet groove. In order to achieve the same tightness both in the area of the inner top rabbet rib and the continuation rib, it is expedient if the two have the same height, at least in the area of the central tile area.

The height of the continuation rib can be reduced in the region of the curvature of the cover fold part and there can have two notches in a crenellated manner. When the flat roof tiles are stacked horizontally, they should each take up the ends of the top cover ribs at the ends.

In order to protect the head-side fold corner from blowing in when it is covered, it is advantageous if the inner head fold rib tapers at its end facing the side fold part and has a locking pin in the region of the taper. The taper allows the outer flank of the overlapping tile, the locking pin prevents rain and snow from blowing in despite the taper.

In order to further seal off the head interlocking from the side of the top deck corner cutout, it is provided in another embodiment of the invention to equip the deflecting rib at its transition to the pin with a longitudinal pin which is primarily as high as the pin itself and which extends as far in the longitudinal direction of the brick extends as the offset of the inner foot rib is offset towards the brick base.

In order to achieve a horizontal locking of the flat roof tiles when the flat tiles are stacked horizontally, it is provided to arrange support bumps on the back of the tile which extend from the top side seam corner along the tile edge to the bottom side seam corner. When stacking, these support humps lie in the side groove of the pan underneath. A stacking hump is in alignment with the support humps, which is located at the bottom of the fold of the foot and, when stacked horizontally, is placed on the hook-shaped bend in the pan underneath.

The invention is described below using exemplary embodiments.

Fig.1

eine Draufsicht auf eine erste Ausführungsform einer erfindungsgemäßen Flachdachpfanne,

Fig.2

eine Druntersicht auf die Flachdachpfanne von Figur 1,

Fig. 3

einen Querschnitt durch das Vierziegeleck mit einer Schnittansicht der Ziegeln I, II, III und IV,

Fig.4

eine Durchblickansicht von zwei miteinander horizontal gestapelter erfindungsgemäßer Flachdachpfannen im Bereich des Kopfseitenfalzecks,

Fig.5

eine Phantomdraufsicht auf das Vierziegeleck, bei der die Ziegel I und II jeweils mit durchgezogenen Linien im Bereich der Kopfverfalzung zu sehen sind und von Ziegel III die Ziegelunterseite im Bereich des Fußseitenfalzeckausschnittes mit strichpunktierten Linien dargestellt ist,

Fig.6

eine Phantomdraufsicht auf die Ziegel I und II, wobei von Ziegel I die Draufsicht des Kopfseitenfalzecks in durchgezogenen Linien und von Ziegel II die Druntersicht des Kopfdeckfalzecks in strichpunktierten Linien dargestellt ist,

Fig.7

eine Phantomdraufsicht auf die Ziegeln II und III im Vierziegeleck, wobei von Ziegel II das Kopfdeckfalzeck in durchgezogenen Linien und von Ziegel III das Deckfußfalzeck in strichpunktierten Linien mit seiner Ziegelrückseite dargestellt ist,

Fig.8

eine Phantomdraufsicht auf die miteinander verlegten Ziegel III und IV, wobei von Ziegel III das Fußende der Seitenverfalzung und von Ziegel IV das Fußende der Deckverfalzung zusammen mit der Fußverfalzung zu sehen ist,

Fig.9

eine Phantomdraufsicht auf die Ziegel II und IV, wobei von Ziegel II die Oberseite des Kopfdeckfalzecks und von Ziegel IV die Unterseite des Fußdeckfalzecks gezeigt ist,

Fig. 10

eine Draufsicht auf eine zweite Ausführungsform der erfindungsgemäßen Flachdachpfanne,

Fig. 11

eine Druntersicht auf die Flachdachpfanne von Figur 10,

Fig. 12

einen Querschnitt gemäß der Linie III-III von Figur 10 durch zwei miteinander eingedeckte, benachbarte, erfindungsgemäße Flachdachpfannen, und

Fig.13

einen Längsschnitt in Sparrenrichtung durch zwei miteinander eingedeckte Flachdachpfannen gemäß der Linie IV-IV von Figur 10.

It shows:

Fig. 1

a plan view of a first embodiment of a flat roof tile according to the invention,

Fig. 2

a bottom view of the flat roof tile of Figure 1,

Fig. 3

3 shows a cross section through the four-tile corner with a sectional view of the bricks I, II, III and IV,

Fig. 4

FIG. 2 shows a view through the view of two flat roof tiles according to the invention stacked horizontally with one another in the area of the side seam fold, FIG.

Fig. 5

2 shows a phantom top view of the four-tile corner, in which the bricks I and II can be seen in each case with solid lines in the area of the head folds and in the case of brick III the underside of the tile in the area of the cut-out corner of the foot is shown with dash-dotted lines,

Fig. 6

2 shows a phantom top view of the bricks I and II, the top view of the top-side hinge corner being shown in solid lines by brick I and the underside view of the top-corner hinge corner being shown in dash-dotted lines by brick II,

Fig. 7

2 shows a phantom top view of the bricks II and III in the four-tile corner, brick bricks II showing the top deck fold in solid lines and brick III the deck liners in dash-dotted lines with its brick back,

Fig. 8

a phantom top view of the bricks III and IV laid with one another, with brick III being the foot of the side fold and brick IV being the foot of the cover fold can be seen together with the fold of the foot,

Fig. 9

FIG. 2 shows a phantom top view of the bricks II and IV, the top of the top flap corner being shown by brick II and the bottom side of the bottom flap corner by brick IV,

Fig. 10

a plan view of a second embodiment of the flat roof tile according to the invention,

Fig. 11

a bottom view of the flat roof tile of Figure 10,

Fig. 12

a cross section along the line III-III of Figure 10 by two covered, adjacent, flat roof tiles according to the invention, and

Fig. 13

a longitudinal section in the rafter direction through two roof tiles covered with each other according to the line IV-IV of Figure 10.

The numbers I to IV refer to the covering of the flat roof tiles according to the invention on the tiles involved in the four-tile corner. The brick at the bottom right is labeled I, the brick at the bottom left with II, the brick at the top right with III and the brick at the top left with IV.

In the following, reference is made to the first embodiment as shown in FIGS. 1 to 9.

The flat roof tile 1 has a rectangular outline and has a top rebate part 2, top rebate part 3, foot rebate part 4 and a side rebate part 5. The central field 6 is flat and is flanked by a top rebate part 3 which is essentially rectangular in plan.

At the four corners of the brick there is the top deck seam corner 29, the top side corner seam 28, the foot side corner seam 48 and the foot deck seam corner 49.

The top fold part 2 comprises an outer top fold rib 213, as well as an inner top fold rib 217 and in between a top fold groove 216.

The outer top rabbet rib 213 has a lowering 2132 in the area of the head side fold, which merges into an outer side rabbet rib 513 in the corner. With the exception of this lowering, the outer top rabbet rib 213 extends at the same height to the top fold flank 313 and ends there in the area of the top corner fold 29 in one Pin 2133.

The inner head rebate rib 217 has an extension 2176 in the head side rebate corner 28, which merges into an inner side rebate rib 515, which is also lowered there, via an increase in height.

The inner top rabbet rib 217 also runs at a constant height over the central tile area and ends in front of the top seam flank 313 at an overflow 2171. In this area, the inner top rabbet rib 217 overlaps with an upstream continuation rib 2174, which extends approximately to the outer top seam flank 311.

The overflow 2171 forms a flat flow channel from the top rabbet groove 216 to the central brick section 6. It has a horizontal opening parallel to the brick wall axis, which is delimited by the overlapping ends of the top fold rib 217 and the continuation rib 2174.

In order not to lose too much depth in the longitudinal direction of the brick, one of the two ribs or both can be notched in the overlap area. The overlap area can be designed in such a way that the free outflow opening of the flow channel is wider than the inflow opening in the area of the top rabbet groove 216 in order to achieve a certain nozzle opening. In this context, the two crenellated notches 2175 of the continuation rib 2174 are also of interest, since, among other things, they form ventilation openings for better ventilation of the overflow 2171.

The outer and inner top rabbet ribs 213 and 217 have the same height in the area of the central tile field. The top rebate groove 216 merges into a side rebate groove 514 at the same level.

The sealing surface 296 extends almost over the entire length of the corner cutout 295 or the head fold. The width of the sealing surface 296 corresponds to the width of the side fold part 5, consisting of inner and outer side fold ribs 513 and 515 and the intermediate fold groove 514.

The sealing surface 296 is delimited towards the head-side end of the brick by a transverse rib 298 which extends in the extension of the outer head fold rib 213 between the pin 2133 and the lateral tile end in the region of the top-hatching corner. The cross rib is kept considerably lower than the outer top rabbet rib 213 or the pin 2133.

The sealing surface 296 is laterally delimited by a deflection rib 297, which is located between the pin 2133 and the extension rib 2174 of the inner foot rib 217. The Extension rib 2174 extends there in the area of the inner cover seam flank 313.

The deflection rib 297 has a longitudinal pin 2134 at its transition to the outer top rabbet rib 213, or to the pin 2133 located there. This is designed as high as possible, in the present case as high as pin 2133.

The pin can be made as long in the direction of the longitudinal axis of the brick as the offset 4251 of an inner foot rebate rib 425, which will be explained later, is offset toward the brick base. The longitudinal pin 2134 can be made wider than the connecting rib 297.

The level of the sealing surface 296 is raised relative to the level of the top rabbet groove 216 in such a way that the depression 2132 and 2172 of the outer top rabbet rib 213 and the inner top rabbet rib 217 are covered in the covering. The side fold part 5 comprises the already mentioned outer side fold rib 513, the side fold groove 514 and the inner side fold rib 515. Both side fold ribs are lowered in the direction of the head side fold corner 28 and partly level with the depressions in the outer head fold rib, partly fit a vertical jump into the inner head fold . The side rebate groove 514 is also lowered in the region of the head side rebate corner 28.

The inner side rebate rib 515 rises slightly from the inner top rebate rib 217 towards the foot area of the brick until it reaches the full height which it maintains in the area of a water switch 531 up to the foot end. The water switch is slightly above the level of the central tile field 6 and drains onto it.

The inner side seam rib 515 is kept somewhat lower than the outer side seam rib 513. The outer side seam rib 513 rises, analogously to the inner side seam rib 515, from the depression 2132 towards the foot region of the brick until it has reached its full height.

It maintains this height up to its end on the foot side in the area of a hook-shaped bend 5135 directed towards the brick center field. This bend is preceded on the receiving side by a receiving surface 5137 which is at the same height as the center field 6. When covering, a bend 4251 of a middle foot rib 425, which is yet to be explained, is placed on this receiving surface.

The side rebate groove 514 rises slightly from the fold line 5141 to a further fold line 5142, which lies approximately in the area of the water switch 531. Due to the length of the side rebate between the fold lines 5141 and 5142, the desired slight increase of only 5 ^o can be achieved.

Between the water switch 531 and the hook-shaped bend 5135 on the foot side, there is another hook-shaped bend 5134 obliquely to this, which extends between the brick center panel 6 and the outer side rebate rib 513.

The bend 5134 runs - as can be seen from FIG. 1 - at an angle alpha of approximately 45 ^° diagonally downward to the right in the direction of the central tile field in order to drain the side groove 514 as far as possible in front of the foot side seam 48 and to prevent the collected there Water penetrates into the toe fold 48.

For this purpose, the bend 5134 can also be provided with an extension rib 5151 which, in alignment with the inner side rebate rib 515, extends from the free, central field side End of the bend 5134 extends in the direction of the brick base 4. The extension rib ends primarily leaving a water opening 59 in front of the bend 5135. The surface 5136 enclosed by the two bends, by the outer side rebate rib 513 and the inner extension rib 5151 can be inclined in the direction of the brick center panel 6 in order to also allow rapid drainage there to effect.

When covering, a rib piece 3252 can engage in the enclosed surface 5136, which, if desired, is arranged in the extension of the central top seam rib 325 and in front of the bend 4251 of the inner foot seam rib 425. The size of the rib piece is dimensioned such that it largely fills the interior of surface 5136 when covering, but there is sufficient space for the surrounding ribs.

The bend 5135 is preceded by the receiving surface 5137, which is delimited by a bump 58 in the direction of the central brick field. The hump closes off this surface from the support surface 613 and thus prevents the ingress of water that comes from the side folds or from the surface 5136.

In order to accelerate the water drainage, the flank of the cusp facing the brick head is directed obliquely downward to the right analogously to the inclined inclination of the bend 5134, or the inner flank of the bend 5135, which is also inclined at an angle beta.

The bends 5134 and 5135 are just as high as the outer side fold rib 513, but the hump 58, on the other hand, is primarily held lower.

The central tile field 6 is carried out in the area of the foot side fold 48 at the same height up to the outer edge of the tile and forms a central field plateau 613 in the area of a rectangular foot-side corner cut-out 486, which plateau is at the same level as the receiving surface 5137.

The only foot side rebate cutout 486 is therefore surrounded on two sides by flat surfaces, namely by the support surface 613 in the direction of the central field and by the receiving surface 5137 in the direction of the side fold.

When covering, a contact surface 3111 of the outer cover fold flank lies on the contact surface 613.

The central tile field 6 essentially consists of a plane that extends from the top fold to the eaves-side end of the brick and is delimited on the left and right by the side fold 5 or the top fold part 3. At the end on the foot side, the curve runs into the course of the cleaning ridge.

Now to the back of the brick and to Figure 2.

In the top rebate part 2 there are two transverse suspension lugs 221, which are connected to a head-sided brick edge via somewhat lower stacking bumps 222.

The cover fold part 3 comprises an outer cover fold flank 311 which has a lower contact surface 3111 with which the covering tile lies on the middle field of the covering tile. At the transition from the contact surface 3111 to the remaining cover fold, the cover fold flank contains a groove 3114 which extends essentially from the top cover fold corner cutout 29 to a recess 4252 of the inner foot fold rib 425. An outer cover groove 324, a central cover rib 325, an inner cover groove 328 and an inner cover rib 327 follow in the middle of the upper tile half.

The groove 3114 is delimited on the head side by a kink 3115 of the outer cover seam flank 311.

The middle top fold rib 325 has a thickening 333 in the head region. The inner top fold rib 327 ends on the foot side at an offset 4251 of the inner foot fold rib 425. Before this rib is reached, the inner top fold rib 327 tapers to a narrow, sword-like extension 3271, which is also opposite in height the remaining rib 327 is reduced.

This extension has decisive advantages for the drainage of the underside of the brick. Any condensation water or spray water that has entered collects on the underside of the top rebate rib 327 and runs in the direction of the foot area up to the offset 4251, whereupon it is introduced into the head rebate of the covered secondary tile.

The middle cover fold rib 325 ends on the foot side in an oblique bend 3251 which is directed towards the outer cover fold flank 311. Water collected there runs along the groove 3114 to the hump 58 on the top of the brick, where it is discharged to the middle field.
The recess 4252 of the inner foot rib 425 serves to receive the cusp 58 when covered.

The inner cover rib 327 is higher than the middle cover rib 325 and is lowered at its foot end to approximately the level of this rib.

In the area between the outer foot seam rib 423 and the rib piece 4251, the outer cover seam edge 311 lies in its area 3111 on the support surface 613 of the underlying tile.

The foot fold part 4 has an outer foot fold rib 423 and a middle foot fold rib 425, between which there is a foot fold groove 424. The outer rebate rib 423 is widened in the area of the central tile field and split into the two parallel branches 4231, between which a groove 4232 lies.

The outer foot rebate rib 423, or its branches 4231, end in the region of the foot side seam cutout 486. Its end is designed so that when it is covered, it is drawn upward to the corner cutout following the profile of the outer cover seam edge 311.

The middle foot rib 425 has an offset 4251 in the area of the inner top seam flank 313, which is offset on the foot side. From the edge of the corner cut-out 486 running parallel to the foot fold part 4, there follows a rib piece 4861, which is attached approximately in the extension of the inner foot fold rib 425. Following the rib portion 4861 is a recess 488, the dimensions of which essentially correspond to the surface 296 of the top of the brick.

The rib piece 4861 overlaps somewhat with the side seam-side end of the inner foot seam rib 425 and represents a somewhat deeper extension thereof in the direction of the outer brick edge. The rib piece ends at the outer edge of the brick and forms an edge border of the foot side seam corner cut-out 486. At the same time, it forms a boundary of the sealing surface 488 formed as a hollow.

Rib 4861 is about half the height of inner foot rib 425.

The side fold part 5 has a plurality of support bumps 5132 on its underside. It is in alignment with these bumps the cavity 488 is a stacked bump 5131 designed in the manner of a parallelogram. It is connected on one side to a longitudinal bar 57 which extends from the cavity 488 along the edge of the brick to the top end of the brick at the top corner seam 28.

On the other hand, the stacking bump 5131 is connected to a condensation water rib 572, which leads along the cavity 488 to the inner foot rib 425. The cavity is thus surrounded on three sides by the stacking bump 5131, by the condensation water rib 628, by a remainder of the inner foot rib 425 and by the rib piece 4861.

The longitudinal bar 57, the stack hump 5131 and the condensation water rib 628 are of the same height in the present case, so that they merge into one another.

Figure 3 shows a cross section through the four-tile corner. Bricks I to IV are cut.

The outer side rebate rib 513 is cut from brick I in its lowered part. The side rebate groove 514 follows. As a line of sight, one can still see the lowered part 2132 of the outer top rebate rib 213.

In brick II, the following is cut from left to right: the top rebate groove 216, the rise to the top rebate part 3, a horizontal level and the deflection rib 297, followed by the sealing surface 296. On its underside there is the inner top rebate rib 327, the thickening 333 of the middle cover fold rib. The sealing surface 296 and the transverse rib 298 lie on the upper side.

Brick III is cut in the foot groove 424. You can see the inner foot rib 425. In the corner cutout is the outer one Flank of the lower hook-shaped bend 5135 can be seen. The outer side rebate rib 513 and the area 5136 between the hook-shaped bends 5134 and 5135 and the hump 58 are shown in dashed lines.

On brick IV, the extension rib 2174 with the notches 2115 can be seen on the top. The overflow head 2171 follows to the left. To the left of the overflow head 2171, the inner head rebate rib 217 continues.

On the back of brick IV, the inner foot rib 425 can be seen together with its offset 4251. The section also shows the sword-like extension 3271 of the inner cover rebate rib 327, which lies in front of the peg 2133 and its extension 2134 of the covered tile II when covered.

In the following, the phantom drawings 5 to 9 are considered, they show in different combinations the engagement of the different bricks in the covering.

FIG. 5 shows how brick II covers the neighboring brick I in the area of the head folds. It can be seen how the outer top fold flank 311 of the brick II lies in front of the taper of the extension 2176 of the inner top rabbet rib of the brick I. At the same time, it can be seen how the transverse rib 298 of the brick II is placed in an extension but is raised against the top rabbet rib 213 of the brick I.

The brick III lies on the brick I and II with the dash-dotted bottom view. Its rib section 4861 is in contact with the sealing surface 296 of the brick II. It forms, as it were, a sliding shoe that on the sealing surface on the one hand takes advantage of the headroom from the transverse rib 298 to the other hand, can be moved to the continuation rib 2174. In Figure 5 it is shown in a middle position.

This intervention is somewhat clearer from FIG. 7. From this it can also be seen that the cavity 488 has approximately the same length and width dimension as the sealing surface 296. This is due to the mutual displaceability.

It can be seen in particular from FIG. 5 that spray water adhering to the longitudinal ledge 57, for example on the underside of the brick III, due to the hydrophilic property of the clay brick along the stacking bump 5131 and the condensation water rib 628, entered into the top rabbet groove 216 of the brick I via the top rabbet rib 213 thereof because there the water drops fall in the area of the inner foot rib 425 and reach the top groove 216.

FIG. 6 shows the engagement of the underside of the brick II in the top of the brick I in the area of the head folds. The outer side rebate rib 513 of the brick I lies in the inner side rebate groove 328 of the brick II, the same applies analogously to the inner side rebate rib 515 and the outer side rebate groove 324.

The thickening 333 of the middle top rebate rib 325 comes to rest in the top rebate groove 216 of the brick I and forms a sliding support there, but without hindering the lateral drainage of the top rebate groove via the side rebate groove.

FIG. 8 shows the overlay of brick III by brick IV in the foot area. The side folds of brick III are overlapped by the top folds of brick IV. The bend 3251 of the middle top fold rib 325 lies in the water switch 531. The same happens with the lowered surface 5136 because the rib section 3252 lies there. The inner one Cover seam rib 327 extends with its sword-like extension 3271 along the outer side seam rib 513 and, here too, analogously to the above explanations, it is possible to transfer spray drops adhering to it into the head fold of the covered, lower follow-up tile, which is not shown in this figure, however.

The offset 4251 of the inner foot rib 425 of the brick IV lies on the receiving surface 5137 of the brick III. The hump 58 lies in the recess 4252 of this inner foot rib. The groove 3144 opens out at the recess. The tile IV, with the contact surface 3111 of the outer cover fold flank, lies sealingly on the contact surface 613.

FIG. 9 shows the same section of the brick underside from FIG. 8, but this time in engagement with the lower secondary tile II covered by it guided. One can see the possibility of displacement of the inner and outer foot rebate ribs 425 and 423 of the brick IV with respect to the inner head rebate rib 217 and the continuation rib 2174. With a corresponding shift, the offset 4251 leads freely past the end of the head rebate rib 217 on the top seam side. The same applies to the end of the two branches 4231 of the outer base seam rib 423 of the brick IV on the top seam side. They can be pushed freely past the inner end of the extension rib 2174 of the brick II.

FIG. 4 shows two flat roof tiles according to the invention stacked on top of one another with their locking engagement in the region of the side folds. The support bumps 5132 of the covering brick engage in the side rebate groove 514 of the covered brick and thus lock the two bricks to the side. Only the stacking hump 222 and, at the foot end of the brick, the stacking hump 5131 form the desired support.

Figures 10 to 13 relate to another embodiment. Corresponding parts have the same reference numerals as in the first embodiment. Basically, the same explanations apply to the second exemplary embodiment as to the first. If there are any deviations, they are listed below.

The side rabbet 5 of the flat roof tile has two bends 5135 and 5134 at the end on the foot side, which are led away from the first embodiment at a right angle to the outer edge of the brick in the direction of the central tile field 6. The depression 5136 is thus framed in a U-shape by the bends and is open to the central tile field. Analogous to this configuration of the side folds, the cover folds have been changed.

The middle cover seam rib 325 ends at the foot end in a bend 3251 which is directed towards the outside of the brick. When she was covered, she put herself in the water switch 531.

The inner top fold rib 328 ends deeper on the foot side than the middle one and opens there into a transverse rib 427.

This is lowered by an amount from the contact surface 3111 of the outer cover fold flank 311, which corresponds to the height that the surface 5136 is raised above the middle field.

The transverse rib 427 has an inner branch 4273 at its foot end, which extends from a notch 4271 to the inner top fold flank 313.

The branch is approximately level with an outer branch 4272, which is located beyond the notch 4271 and extends to the outer top fold flank 311.

The bend 3251 directed towards the outside of the brick, together with the outer branch 4272, creates a free space in which the bend 5134 is inserted during the covering.

The sealing surface of the second embodiment is free of ribs both towards the top end of the brick and towards the top rebate groove 216. It corresponds in the manner already described with the surface 488 on the underside of the brick for the purpose of sealing the top corner seam.

FIG. 12 shows the engagement of the outer branch 4272 of the transverse rib 427 in the surface 5136. The length of this surface corresponds approximately to the thickness of the outer branch 4272 plus a slight compensation for any shrinkage differences.

The transverse rib 427 creates, in an amazingly simple manner, an additional seal at the foot end of the side folds, specifically in front of the water separator 531.

Figure 13 shows the same area, but in a section parallel to the rafter direction.

Between the bends 5134 and 5135, the outer branch 4272 of the transverse rib projects into it, the water switch 531 is covered thereby, so that the collected water can flow to the central tile field in a calm manner.

Claims (44)

Flat roof tile with a head, side, foot and deck fold that forms a horizontal head and side joint and a multiple overlap when laid, as well as with a cut-out in the foot side fold and a single cut-out and a plateau in the head cover fold
characterized,
that the foot gusset (48) has only a single corner cutout (486), which is assigned a receiving surface (5137) over its entire width, which is covered by a section (4251) of the inner foot rebate rib (425) when covered, the is located on the underside of the cover fold part (3). Flat roof tile, according to claim 1, in which the underside of an outer top seam flank on the back of the tile opens into an outer foot rebate rib,
characterized,
that the inner foot seam rib (425) extends to the outer top seam flank (311) and rests when covering with a section (4251) on the receiving surface (5137) and the inner foot seam rib (425) is flush with the contact surface (3111) of the outer cover seam flank (311) opens, so that the same and the foot fold rib form a plane. Flat roof tile, according to claim 1 or 2, with a rectangular outline, in which an outer or inner top rabbet rib merges without interruption into an outer or inner side rabbet rib and in which the side rabbet an outer side rabbet rib (513), a side rabbet groove (514) and one has inner side fold rib (515) and is covered by the cover fold part as a whole,
characterized,
that the receiving surface (5137) extends over the entire width of the side folds (5) and is adjacent to it in the foot-side rebate cut-out (48) is a support surface (613) extending in the longitudinal direction of the brick, which is flat to the latter and / or to the central field (6). Flat roof tile according to one of the preceding claims, with a top fold (2) consisting of an outer top fold rib (213), a top fold groove (216) and an inner top fold rib (217)
characterized,
that a surface (488) is arranged on the back of the tile in the foot-side rebate cutout (486), which is as wide as the side rebate part (5) and its length (L) at least the width (B) of the outer top rebate rib (213) and the top rebate groove (216 ), the area being limited in its entire length by a lateral condensation water rib (628) which opens into the inner foot rib (425). Flat roof tile according to one of the preceding claims,
characterized,
that a surface (296) adjoins the top deck rebate corner cutout (29), the length and width of which corresponds to the surface (488) on the back of the brick. Flat roof tile according to one of the preceding claims,
characterized,
that the outer side rebate rib (513) is led through to the receiving surface (5137) and in front of it merges into a hook-shaped bend (5135) which is of the same height and directed towards the brick center panel (6). Flat roof tile according to one of the preceding claims,
characterized,
that the outer foot rib (423) between the cover fold part (3) and the foot side corner cutout (486) is divided into two parallel branches (4231), between which there is a groove (4232) and the inner foot fold rib (425) in the area of the cover fold part ( 3) has a bend (4251) and is guided flush at the same height from the bottom side seam corner (48) to the outer top seam edge (311). Flat roof tile according to one of the preceding claims,
characterized,
that the inner rebate rib (425) opens flat and flush into a support surface (3111) of the outer top seam flank (311). Flat roof tile according to one of the preceding claims,
characterized,
that the inner top rebate rib (217) in front of the top rebate part (3) has a hook-shaped deflection (2173) directed towards the brick center panel (6), to which an overflow () which drains the top rebate groove (216) and forms a free connection to the brick center panel ( 2171) in the area of the top fold part (3) is connected to a continuation rib (2174) which is offset somewhat on the foot side with respect to the top fold rib. Flat roof tile with a water switch at the foot end of the side rebate groove according to one of the preceding claims,
characterized,
that between the water switch (531) and the foot-side hook-shaped first bend (5135) there is a second hook-shaped bend (5134) which forms a U-profile with the first and the foot-side end region of the outer side rebate rib (513) and a lowered surface ( 5136). Flat roof tile according to one of the preceding claims,
characterized,
that the surface (5136) has the same level as the water switch (531). Flat roof tile according to one of the preceding claims,
characterized,
that the outer top rabbet rib (213) runs continuously from the top side seam corner (28) to a pin (2133) located in front of the sealing surface (296) of the top hat seam corner (92), and a transverse rib (298) is present in the extension of this rib the sealing surface (296) closes on the head side and extends over the entire width of this sealing surface to the top deck rebate (29) and that when the tiles are covered, the transverse rib (298) engages in the sealing surface (488). Flat roof tile according to one of the preceding claims,
characterized,
that the sealing surface (296) is laterally delimited by a deflecting rib (297) which extends from the pin (2133) in the longitudinal direction of the brick to the inner top rabbet rib (213), or to its hook-shaped continuation rib (2174) extending over the top seam part (3) . Flat roof tile according to one of the preceding claims,
characterized,
that the sealing surface (488) on the foot side is delimited by a rib piece (4861) which forms the end of the foot-side seam cutout (486) and the sealing surface (488) together with the condensate water rib (628) surrounding it in an approximately L-shape to one opposite Brick center field makes completed excavation. Flat roof tile according to one of the preceding claims,
characterized,
that the rib piece (4861) is arranged approximately in the extension of an inner foot rib (425) and has a lower height than this and, when covered, the underside of the rib piece (4861) on the sealing surface (296) and that the transverse rib (298) on the Sealing surface (488) rests. Flat roof tile according to one of the preceding claims,
characterized,
that the free space of the sealing surfaces (296) and (488) is dimensioned so large that it corresponds to the desired displacement range and the flank of the rib part (4861) facing the head part rests in the drawn state on the flank of the transverse rib (298) facing the foot part and that, in the pushed state, the flank of the rib portion (4861) facing the foot-side seam cutout (486) bears against the continuation rib (2174) of the underlying tile. Flat roof tile according to one of the preceding claims,
characterized,
that the receiving surface (5137) is associated with a hump (58), both of which are covered when covered by the section (4251) of the inner foot rib (425), which is located on the underside of the cover fold part (3) and for receiving the hump (58) has a recess (4252) at the transition to the outer cover seam flank (311). Flat roof tile according to one of the preceding claims,
characterized,
that the hump (58) is located in front of the free end of the bend (5135) and extends from this end to the corner of the bottom side corner cutout (486), extending over the entire depth of the receiving surface (5137) and this surface in the direction of the Brick center field closes and in his Height is at most half as high as the outer side fold rib (513) or the kink (5135) Flat roof tile according to one of the preceding claims,
characterized,
that on the inside of the cover fold flank (311) there is a groove (3114) which extends from the top cover fold corner (29) to the foot cover fold corner (49) and lies in one plane with the recess (4252). Flat roof tile according to one of the preceding claims,
characterized,
that the groove (3114) extends to close to the outer edge of the top deck corner cutout (29) and the bearing surface (3111) of the outer top fold rib (311) forms a hook-shaped bend (3115) there as a slot end. Flat roof tile according to one of the preceding claims,
characterized,
that the second hook-shaped bend (5134) to form an oblique drain within the water switch (513) at an acute drain angle (α) of primarily 35 ^o to 65 ^o , in particular 45 ^o , from the outer side rebate rib (513) in the direction of the brick center panel (6 ) runs. Flat roof tile according to one of the preceding claims,
characterized,
that the second bend (5134) has an inner extension rib (5151) which is aligned parallel to the outer side fold rib (513) and the bends (5134, 5135) and / or the extension rib (5151) have the same height as the adjacent side fold rib (513 ). Flat roof tile according to one of the preceding claims,
characterized,
that the extension rib (5151) reaches shortly before the first bend (5135) and ends in front of a water opening (59) of the lowered surface (5136) which is higher in level than the middle field (6) and primarily has the same level, like the water switch (531). Flat roof tile in particular according to one of the preceding claims,
characterized,
that on the back of the brick along the entire length of the side fold part (5) there is a longitudinal bar (57) arranged on the outer brick edge of the side fold part (5), which is preferably at the same height - from the top side fold corner (28) to the stacking hump (5131) in the foot side fold corner (48), the condensation water rib (572) extending from it to the inner foot rib (425). Flat roof tile in particular according to one of the preceding claims,
characterized,
that the middle cover fold rib (325) is preceded at the foot end by a rib piece (3252) which engages in the recessed area (5136) when covered. Flat roof tile in particular according to one of the preceding claims,
characterized,
that the outer flanks of the outer and inner side fold ribs (513, 515) have a smaller distance from each other than the inner flanks of the cover fold part and the inner cover fold rib (328), so that when covered, the middle cover fold rib (325) is neither in the drawn nor in the pushed Condition touches the inner flanks of the inner side fold rib (513) or the outer side fold rib (515). Flat roof tile according to one of the preceding claims,
^{characterized,}
that the inner top fold rib (328) opens at its foot end into a tapered and lowered extension rib (3271) which is led up to the inner foot fold rib (425), or until it is bent (4251). Flat roof tile according to one of the preceding claims,
characterized,
that the inner top rebate rib (217) and the continuation rib (2174) overlap in the end region of the middle panel (6) on the top seam side and form an overflow (2171) there for the top seaming with the opening direction parallel to the brick wall axis. Flat roof tile according to one of the preceding claims,
characterized,
that the depth of the overflow head (2171) is dimensioned so that a flat connection between the top rabbet groove (216) and the middle field (6) forms. Flat roof tile according to one of the preceding claims,
characterized,
that the continuation rib (2174) is in front of the inner top rebate rib (217) in relation to the central tile field and in the overlap area one of the two ribs, especially the continuation rib (2174) is released to form a sufficiently wide overflow, the continuation rib (2174) in the area of the central tile field has the same height as the inner head rebate rib (217). Flat roof tile according to one of the preceding claims,
characterized,
that the continuation rib (2174) is reduced in height in the area of the curvature of the cover fold part and has two notches (2175) in a crenellated manner in the area of the curvature of the cover fold part (3), into which the top ends of the two cover fold ribs (325 and 327) come to rest. Flat roof tile in particular according to one of the preceding claims,
characterized,
that the inner top fold rib is tapered in thickness at its end facing the side fold part (5) and has a locking pin (2176) in the area of the taper, which protects the head fold part (2) from blowing when covered and against which the outer top fold flank (311) of the covering brick comes to rest. Flat roof tile in particular according to one of the preceding claims,
characterized,
that the deflection rib (297) at its transition to the pin (2133) has a longitudinal pin (2134) which is as high as the pin (2133) and the longitudinal pin (2134) extends in the direction of the longitudinal axis of the brick as far as the offset (4251) of an inner rebate rib (425) is offset in the direction of the brick base (4). Flat roof tile according to one of the preceding claims,
characterized,
that the second hook-shaped bend (5134) runs parallel to the first bend (5135) and the lowered surface (5136) is open towards the central brick field (6) and is higher in level than this. Flat roof tile according to one of the preceding claims,
characterized,
that the bends (5134, 5135) have the same height as the adjacent side fold rib (513). Flat roof tile according to one of the preceding claims,
characterized,
that a transverse rib (427) is arranged parallel to the foot fold on the back of the brick in the area of the cover fold part (3) above the foot fold (4), which, with the exclusion of a notch (4271), extends from an inner flank (313) of the cover fold part to the outer flank (311) of the same, the side fold rib (513) being inserted into said notch (4271) and the part of the transverse rib (427) located in the area of the outer cover fold flank (311) resting on the lowered surface (5136). Flat roof tile according to one of the preceding claims,
characterized,
that the part of the transverse rib (427) located in the area of the outer cover fold flank (311) is lowered as far from a support (3111) of the cover fold part as the surface (5136) is raised above the central field. Flat roof tile according to one of the preceding claims,
characterized,
that an inner cover seam rib (327) adjoins the transverse rib (427) on the foot side, which is lowered by the amount from the contact surface (3111) of the outer cover seam edge (311), which corresponds to the height that the surface (5136) has raised above the central field is. Flat roof tile according to one of the preceding claims,
characterized,
that the cross rib (427) at its foot end an inner Branch (4273), which extends from the notch (4271) to the inner cover fold flank (313) and is approximately level with an outer branch (4272), which is located beyond the notch (4271) and to the outer cover fold flank (311 ) extends. Flat roof tile according to one of the preceding claims,
characterized,
that a central top fold rib (325) has at its foot end a hook-shaped bend (3251) directed towards the outside of the brick, which together with the outer branch (4272) creates a free space in which the bend (5134) is inserted when covered. Flat roof tile according to one of the preceding claims,
characterized,
that on the back of the brick, starting from the top side seam corner (28), there are support humps (5132) which, when stacked horizontally, lie in the side seam groove (514) of the pan underneath. Flat roof tile according to one of the preceding claims,
characterized,
that there is a stacking hump (5131) in the area of the foot side fold (48), which is aligned with the support humps (5132) and, when stacked horizontally, lies on the hook-shaped bend (5134) of the pan underneath. Flat roof tile according to one of the preceding claims,
characterized,
that a support strip (56) is arranged at the head end of the brick back in the region of the side rebate part (5). Flat roof tile according to one of the preceding claims,
characterized,
that the side folds from a fold line (5141) lying in the area of the head side fold (28) is slightly rising to the area of the water switch (531) and the slope ends at a fold line (5142) located in the area of the water switch (531).

Images