DE2264571A1 - PILE ROOF TILES - Google Patents

Description

Extruded roof tiles from P 22 at 151.6-25 The invention refers to a strand roof tile with side interlocks.

The advantages of these known extruded roof tiles are the simple and cheap mass production on extrusion presses with subsequent cutter and the easy to conceal, because the prescribed one due to the lack of cross-folds The spacing of the roof battens does not need to be strictly adhered to. The crinkled Extruded roof tile is usually produced as an extruded interlocking tile and is in Shape and size as a flat plate similar to the well-known beaver tail. on the one It has a covering fold on one side and a covered fold on the other. Since the Extruded interlocking tiles in their head area through the foot area of the roof tiles of the next The higher row is flatly covered, but must not be in the area of the interlocking a thickening at the top nor a thickening at the bottom, otherwise the already inadequate sealing against ingress of water and drift snow even worse at the head-toe overlap due to the widening gap would. One consequence of this is that both the side rabbet rib and the top rabbet rib Only very little may be high, which, together with the inevitable inaccuracy in the manufacture of roof tiles, has a detrimental effect on the tightness of the interlocking. Another consequence of the few that are available for the entire interlocking Ilheight is that the remaining material thickness is below the Seitenfalznut or above the cover rebate groove must be as small as possible in order to at least cover the low rebate rib heights and to ensure the necessary lift clearance. Dics leads to fold breaks during production, at the Transport and the billing of the roof were high costs on the one hand and on the other hand Leaks in the roof.

The way out, through a greater thickness of the entire roof tile, is higher Rip folds and achieve greater material thicknesses on the fold grooves is for the Not suitable for practice. Because thicker panels are very difficult to dry crack-free, which is indispensable for roof tiles. They also bend and warp thicker plates, so that the interlocking and the opf-foot overlap are sealed is adversely affected in the concealed state. By arranging elongated holes can reduce the production difficulties of thick extruded interlocking tiles somewhat will. But there are also narrow limits here, as drifting snow through holes that are too large can penetrate and the appearance is adversely affected.

Another disadvantage of the extruded interlocking tile is that it only comes with one So-called interlocking tile interlocking can be produced, leading to the roof surface forms an approximately vertical gap, depending on whether the interlocking Folds are pulled apart or butted around the side fold play, more or is less wide open and the water flowing off the roof can enter leaves. Because of the low height of the side seam rib there is insufficient seam drainage is possible, this interlocking proves to be not very tight. Difficult: nd joins, that due to the flat surface the draining water is not affected by the interlocking eg is derived to the middle of the roof tile and particularly diagonally or across the Wind sweeping across the roof (read running water over and into the open gap the interlocking drives.

About the required number of pieces per square meter and thus the costs if possible To keep it low, the head-toe overlap should be as short as possible, but this is additional I have the disadvantage of a large free span, which is caused by the support on the roof batten, at which four roof tiles are hung with a nose, up to the head of the next covered brick is enough. As the extruded interlocking tile because of its low height Has a low section modulus, the step resistance is correspondingly low.

Another disadvantage is the obstructed passage of fire when burning in the oven. There are alternately two roof tiles with their lower surfaces or with their upper surfaces placed against one another, eo daJ between the lower surfaces through the A gap for the passage of fire is kept clear while between the noses The passage of fire is not possible on surfaces in full contact, although this is would be desirable for manufacturing reasons. As a result of the only punctiform If the two noses come into contact, the roof tiles can bend in the event of a fire (softening ~ at high temperatures), which significantly worsens the tightness of the side interlocks will.

The disadvantages mentioned are the reason that extruded interlocking tiles has always been used only when there are no high demands on tightness and flat roof slopes and have almost completely disappeared from the market today.

The invention is based on the object of a strand roof tile aer the type described at the outset as dense as possible, solid and through water and To ensure side rabbets that are little exposed to wind.

The solution to the task posed by the invention consists in a strand roof tile of the type described above in that the sum of the total height the interlocking area of two interlocked roof tiles and the height the covered by this central area of an otherwise similar roof tile twice the height of the medium-strong intermediate area and that @eine Undersurface in terms of dimensions to the surfaces of the otherwise similar ones covered by it Strand roof tiles is matched. Since, according to the invention, the central area of the roof tile is weakened the overlapping fold area can be filled in with reinforcement. Dadurcii it is possible to train the folds and folds higher so that the fold is denser. The material thickness at the rebate grooves can also be thin, which means the fold breaking strength is improved and the tightness of the side folds increased will.

There is a particularly advantageous further development of the invention in that the interlocking and the central area as bulges and the intermediate areas are designed as troughs.

This makes it possible to remove the gap on the surface Interlocking instead of in a water-bearing roof tile area in a higher one To arrange area. The draining water can be guided through the troughs, without excessively impinging on the higher lying gap of the Verfalzunn, what the tightness significantly improved. Another advantage of profiling with beads and troughs is the increased section modulus in the longitudinal direction of the brick and thus the increased strength of the tile not only on the roof but also on the other when there is a fire in the oven. Namely, it is for the exact mutual engagement of the folds and therefore particularly important for impermeability that the roof tiles are used during The temperature softening that occurs frequently in the fire remains straight, which is far-reaching also depends on their dimensional stiffness.

Another advantage of the bead-like design on the surface False areas is that instead of the so-called. Interlocking tile interlocking with vertical gap the much denser absorbed. Pan rabbet with horizontal Gap and kleijister gap height can be provided what the tightness of the interlocking vastly improved.

In another advantageous embodiment of the invention Roof tiles have the bulges in the head area of their surface and in the foot area notches corresponding to their lower surface, so that an even greater height of the interlocking area and thus iioch higher folds can be provided.

In another embodiment, the height of the inner side seam rib is the height of the overlapping bead and the height of the central bead are so on top of each other coordinated that the roof tiles touch with three longitudinal lines continuously, if they are placed next to each other with their surfaces rotated by 180 against each other. Daduich it is achieved that the roof tiles move even with ~ temperature softening during the Brandes do not bend in their longitudinal direction, so that there is a dense rolling of the sides guaranteed by instr In a further, particularly advantageous further development of the roof tile according to the invention is the transition from the bottom of the Seitenfalznut to its inner side wall formed as a recess, which the inner top edge the side rebate groove undercut. Through this recess it is possible in place the usual re-entrant edge, which is due to the necessary fold side play could only be slightly rounded1 to provide a fillet with a larger radius and thus to increase the folding resistance. In addition, the fillet forms together with the cover rib a channel that allows a pressure-free discharge of any penetrated Allow water to leak onto the roof surface, thereby reducing the tightness of the Deitenverfalzung is significantly improved. In addition, the recess creates a vortex chamber in the manner of a labyrinth seal, which also increases the windproofness.

In another, particularly advantageous embodiment of the invention The extruded roof tile has two noses for hanging on its head Edge, and two more in the eaves-side half of its lower surface, outside of the area intended for the head-toe overlap. The total height of the nose and Roof tile is the same for all noses, so that one is parallel The roof tiles can be stacked on top of one another by means of their noses. The special ones The advantages of these stacking points are the same that due to the exact support the roof tiles with the temperature softening that often occurs during the fire remain straight, which is necessary for the tightness of the corruption. Also touch the stacked roof tiles only with the noses, so that the corners and the side folds are exposed and fold breaks do not occur due to the effects of the Gewielits during transport can. Good fire passage in two directions is also possible by stacking on noses guaranteed.

In a variant of the extruded roof tile according to the invention, which for Roofing of the verge is used, another tile plate is used in the interlocking Hooked in at an angle and attached with glue. Due to the separate drying and the separate firing of both panels ensures that they are much better straight stay as a verge goat made in one piece @. who because of his asymmetrical shape warps very easily during drying and firing, so does the any interlocking found on the opposite edge would be less dense. Through the Will the two panels be glued together just as tightly? and permanent connection established, as if the verge tile were made in one piece.

The invention is in the jiachstelienden description with reference to drawings explained by way of example in eight embodiments. They show: FIG. 1 a broken one Cross-section through me: lrere overlapping laterally and in the longitudinal direction of the same kind Extruded roof tile Fig. II a corresponding cross section in another embodiment Fig. III a broken longitudinal section through several overlapping in the longitudinal direction Strand roof tiles. Fig. III is also the longitudinal section A-3 through Fig. II Fig. IV a broken cross section through three overlapping in the longitudinal direction Interlocking areas of two laterally overlapping extruded roof tiles.

V shows a broken longitudinal section through the interlocking area Fig. IV (section D-E) Fig. VI a cross section through two with viral surfaces extruded roof tiles stacked on top of one another Fig. VII a broken longitudinal section by two overlapping extruded roof tiles with several noses.

VIII shows a cross section through one with a verge slab Extruded roof tiles glued to a verge tile Fig. Ix a, b, c show cross sections through different designs of the upper and lower surfaces of extruded roof tiles In Fig. I the Snmnic is the height 1 of the reinforced interlocking area 2 the roof tiles 3 and 4 and the height 5 of the middle area covered by them 6 of the roof tile 7 is twice the height 8 of the medium-thick intermediate area 9 The roof tile underfloor 10 is dimensionally based on the surfaces 11 of the roof tiles 7 and 12 coordinated.

In Fig. II are the reinforced interlocking area 13, the thinner Mittelber @ ich 14 and the moderately strong 15 at a different altitude z @@ in each other, so that they form two troughs 16 and a central bead 17. The pan fold 18 has a rebate 19 towards the roof surface which is approximately parallel to the roof surface runs and is higher than the surface of the trough 16.

In Fig. III, the central bead 20 is only in the head area, in which it is vol the Verwalzungshereich 21 of two other bricks is covered with a notch 22 and only in the foot area with which it covers the interlocking area 21 with a notch 23, which has the advantage that the material is weakened of the bead is limited only to the ends and thus the area of the interlocking two bricks and thus their rebates themselves locll higher s (in can.

In Fig. IV and V extruded roof tiles are shown, which are not in association, but rather laid in a row so that the interlocking areas 28 are laterally adjacent roof tiles, in turn, the interlocking areas of the next row below over @ cken.

The surface of the cover bead is provided with a notch 29 and the lower surface of the side rebate is provided with a notch 30. Advantageous is here that two notches interlock, so that they only ülb must be so deep that the folds ii area of the head-toe overlap do not sc will be very weakened.

In Fig. VI a stackable version is 4argesteiled in which every second strand roof tile - drawn in dashed lines - with its surface the surface of the first is laid.

The sum of the height 31 of the side seam rib 32 and the height 33 of the overlapping bead 34 is twice the height 35 of the adjacent bead 36.

In Fig. II, the recess 39 is shown, which the transition from the bottom of the Seitenfalznut 37 to its inner wall 38 with as large as possible Rounds off the radius and undercuts the inner top edge 40 of the Seitenfalznut 41, so that leakage water can flow off without pressure. In addition, the inner wall 38 is through a lateral rib 42 of the cover fold 43 of the next roof tile is covered.

In Fig VII, apart from those intended for hanging on the roof batten Lugs 52 on the lower valley 44 outside the area provided for the head-toe overlap Surface 45 further lugs 46 are arranged. The heights 47 and 50 are the noses including the overlying parts of the roof tile of the same size, see above that the roof tiles can be stacked parallel to one another.

In Fig. VIII is in the side fold of the roof tile with a corresponding Glue a tile plate 53 glued at an angle.

In Fig. G. IX a, the water runs through the roof-shaped slope 54 the bulges down particularly quickly into the hollows in which it should continue to run, so as not to stress the fold. This embodiment is only so far in need of improvement than when drying on drying frame 55 a small side Displacement of the brick can cause it to bend, as the bearing surfaces 56 are also inclined on the underside.

In the right-hand representation of FIG. IX a, there is a risk of bending in the area of the edition on the drying frame with imprecise edition because of the lower The inclination of the bearing surfaces 57 is reduced.

In the left representation of Fig. IX b are in the area of outer editions Horizontal surfaces 58 are provided on the drying frames.

The surfaces of the beads merge into rounded portions 59, which are closer begin at the middle of the bead than that of a trapezoidal shape drawn in dashed lines Execution would be the case.

This has the further advantage of better water drainage from the beads.

In the embodiment shown in the right illustration of Fig.

IX b is shown by the fillet 60 of the transition from the bead to the trough in comparison to the angular transition 61 in the illustration on the left In this figure, the notch stress is lowered, as at the same time an increased breaking strength means.

In Fig. IX c on the right in the radius of the fillets 62 very large, so that there are hardly any disadvantages in the edition compared to the embodiment according to FIG. IX b on the drying frame. However, the water flow is improved because the Rounding already begins in the middle 63 of the bulges. To avoid notch stresses, are in the embodiment shown in the right half of this figure is the re-entrant edges 64 of that shown in the left half of this figure Execution £ -; orm rounded.

Claims (5)

P A T E N T A N S P R Ü C HE 1.) Extruded roof tiles with side interlocking, d a d u r c h g e -k e n n z e i c h n e t, that the sum of the total height (l) of the reinforced interlocking area (2) two interlocked roof tiles (3 and 4) and the Il; jhe (5) of the from this covered thinner central area (6) of an otherwise similar roof tile (7) is twice the height (8) of the intermediate areas of medium strength # (9) and that its lower surface (.io) dimensionally on the surfaces (11) of it covered otherwise identical strand roof tiles (7 and 12) are matched (see Fig. I) 2. extruded roof tile according to claim 1, d a d u r c ii g e k e n n -z e i c h n e t that the reinforced in its total height Veralzungsbereich (13), which in his Height of the thinner central area (14) and the medium-strong intermediate area (15) iii more variable Altitude to each other (see Fig. IT) 3. extruded roof tile according to claim 1 odei 2 d a d u r c h g e -k e n n n z e i c h n e t that he at least in the longitudinal direction has two troughs (16) and at least one central bead (17). (see Fig. II) 4. extruded roof tile according to one of claims 1 to 3, since-durchgekenn is characterized in that it is provided with a pan interlocking (18), The rebate gap (19) located on the roof surface runs essentially parallel to the Daehfläehe and is higher than the surface of the trough (16) (see. Fig. II) 5. Strand roof tiles according to one of claims 1 to 4, d a -d u r c ii g e k e n n n z e i c h n e t, that the bead (20) in the area of its surface in which it is from the interlocking area (21) two other bricks can be covered over, one Notching (22) au @@ eist and or in the area of its lower surface in which it is the interlocking area (21) of the other tile over @ rde @ kt, has a notch (23) and the sum the heights of both Au @ hlinkungen (22, 23) equal to the difference in the distance between the surface (24) of the interlocking de @ Strangd @ chziegel (25) and the lower surface (26) the interlocking of the laterally adjacent street roof gable (27) to the height of the shard is in the area of the hulde and its upper or lower surface only in the area of the head-toe overlap dimensionally on the under or. Surface of the overlapping or covered, similar Tile is matched (see Fig. @@@@ III). G. string roof goat] according to one of claims 1 to 4 d a -d u r c h e k e n n n e i c Ii n e t that the bead (2o) is to be laid in series Brick in the area in which it can be covered with a notch t29) on its surface and in the area in which it covers with a notch (30) is formed on its lower surface and that twice the sum of the heights both notches (29, 30) equal to the difference in the distance between the surface (24) the interlocking of the extruded roof tile (25) and the lower surface (26) of the interlocking of the laterally adjacent extruded roof tile (27) to the height of the shard in the area of the Well is (see. Fig. IV and V). 7. extruded roof tile according to one of claims 1 to 6, d a -d u r c h e k e n n n z e i c h n t t that the sum of the height (31) of the inner side seam rib (32) and the height (33) of the overlapping bead (34) twice the height (35) of the bead (36) lying therebetween. (see Fig. VI). 8. Sftranged roof tile according to one of claims 1 to 7, d a -d u r c h e k e k e n nz e i c 10 n e t that the transition from the bottom of the Seitenfalznut (37) to its inner wall (3S) is formed as a recess (39) which the inner upper edge (40) of the Seitenfalznut (41) undercut with the largest possible radius (see Fig. II). 9. extruded roof tile according to one of claims 1 to 8, d a d u r c h e k e n n n z e i n e t that the inner wall (38) of the. Side rebate groove (41) through a side rib (42) of the d @ ekfalzes (45) of an adjacent tile of the same type is covered (see Fig. II). 10. extruded roof tile according to one of claims 1 to 9, d a -d u r c ii g e k e n n z c i c h n e j that on the lower surface of its eaves-side half (44) outside of those intended for the head-toe overlap with other strand tiles Surface (45) at least one nose (46) is arranged opposite the lower surface protrudes so far that the vertical Abs @ and (47) between its lower surface (48) and the surface (49) of the brick equal to the perpendicular distance (50) between the undersurface (51) of the Na @ e (52) and determined to be hung on a roof batten the @ surface (49) of the brick is (see. Fig. VII). 11. Strand roof tile according to one of the statements 1 with 10, d a -d u r c, jr e k e n n n z e i c h n e t that another tile plate (53) is preferred is angled augekl @ bt (see. Fig. VIII). 12. Strand roof tile according to one of claims 1 to 11, d a -d u r c h g e k e ii n z e i h n e t that the areas of the interlocking, the central area and the intermediate areas in a form adapted to the respective requirements can be designed (see. Fig. IX a, b, c).