EP0561116B1 - Fastening device for a ridge batten - Google Patents

Abstract

The invention relates to a fastening device (B) for a ridge batten, having nail feet (13) which originate from a ridge-batten bearing plate (14) and are intended for driving into head ends (2) of rafters (1). In order to achieve a design which is simple to manufacture and is optimised in terms of use, the invention proposes that the ridge-batten bearing plate (14) has upwardly directed spurs (16) for penetrating into a ridge batten (10). As a result, the conventional fastening means directed towards the ridge batten (10) or the like can be dispensed with. <IMAGE>

Description

The invention relates to a ridge fastening device in the form of a U-shaped shoe, the U-web of which forms a ridge slat support plate and with nail feet extending therefrom, the outer edges of which run flush with the U-legs and which are provided for driving into the head ends of the rafters .

DE-A-3 437 974 and DE-B-1 298 694 have known claw plates with opposing driving spurs for connecting two wooden parts with parallel driving surfaces, for example for nailing panel panels to load-bearing wooden slats. The wooden parts to be connected must be placed on top of each other with the claw plate in between and the spurs driven in at the same time, for example by hammer blows. It is not provided there to provide a support plate freely spaced above a driving surface.

From US-A-2 620 705 a device is known with which wooden connections which are essentially perpendicular to one another are secured, whereby the corner connection with driving surfaces perpendicular to one another means that such a wooden connection can hardly be released, for example by vibrations. A support plate, which is to be driven into the rafters with nail feet in such a way that it projects in a freely spaced manner from the rafters as a support plate carrying a ridge slats, is likewise not provided there.

It is known from DE-C-3 918 390, the ridge slat platen from one about to form palm-sized wooden blocks into which a double-legged, U-shaped nail foot is driven from above. The U-bridge of the U-shaped nail foot disappears into the wooden body. The ridge slat picks up the smooth top. The latter is held there by nails or screws.

From the generic DE-PS 31 06 740 it is known to design the support plate in the form of a U-shaped shoe opening upwards. The ridge slat is inserted into this shoe. Fastening elements penetrating the U-legs secure the inserted ridge batten. The nail feet are alternatively formed by a fork piece extending from the underside of the support plate or a coherent, knife-like blade. The shape of the shoe proves to be restrictive with regard to the different widths of the ridge slats that occur in practice; since, in addition, transverse fastening forces act via the U-legs, which can distort the position of the fastening device, it was necessary to look for other solutions.

The object of the invention is therefore to design a generic fastening device in a technically simple, more advantageous manner in such a way that one is free in the ridge width, but nevertheless a fastening possibility between the two parts (Ridge batten and device) is given without having to resort to classic fasteners.

This object is achieved by the invention specified in claim 1.

The subclaims are advantageous developments of the ridge fastening device according to the invention.

As a result of such a configuration, an easy-to-assign fastening device for the ridge slat to be arranged in the joint area of two wooden rafters is achieved. The classic fasteners (screws, nails, etc.) are no longer required. Specifically, this is how that the U-legs extend from the ridge slat support plate in the opposite direction to upward spurs for penetration into the ridge slat and the nail feet diverge slightly in their course downwards.

By penetrating such spurs more or less deeply into the ridge batten, a height-adjusting effect can now be used even above the level of the support plate in the manner of a fine adjustment, in addition to the rough adjustment resulting from a more or less deep driving of the nail feet into the head ends of the rafters comes from. A structurally advantageous solution is provided in that the spurs of the ridge slab support plate are formed from the same material by bending upward cut areas of the metal ridge slat support plate. In order to obtain spurs that are as far apart as possible, the free cuts forming the spurs are located in the region of the edge edges of the ridge slab support plate. This is also advantageous in terms of production technology, in that, for example, strip material does not have to be punched from the full, since a long side of the spurs is already present simply because of the basic shape of such a support plate. You only need to create a free cut. It is further proposed that the nail feet merge into a diverging course just below the ridge slab support plate. This pulls the head ends of the rafters together. As a result, in addition to nail retention, advantageous tensioning forces can also be generated, similarly when driving in of a nail, which is easily brought out of its axiality again by hammering just before further or complete driving. Such a nail then sits under high anchoring tension when fully driven.

Furthermore, the invention brings a proposal of even independent importance in such a way that ridge slat support plate, spurs and nail feet are folded from a single die cut. This one-piece construction proves to be particularly economical. In order to be able to use even relatively thin-walled material, an advantageous solution results from cross-beading of the ridge slab support plate and longitudinal beading of the nail feet. This leads to a high stabilization of the parts of the ridge fastening device that are mainly stressed. In stormy areas, additional protection can be used by a holding shoe that overlaps the ridge slat and locks onto the ridge slat support plate. This takes into account the stronger suction effect on the ridge covers connected to the ridge batten. An advantageous construction is that the holding shoe is designed as a C-shaped profiled claw holder and claws with its C-claws in notches on the outside of the nail foot or the U-legs of the U-profiled ridge support plate. Such claw holders can be produced simply by cutting a strip body having the corresponding profile to length. A design which acts in the same way to secure it can be achieved by a toothed or serrated formation of the spurs without adding the mentioned holding shoe. This increases the friction fit of such spurs. The teeth or serrations can go into a barb-like structure. Finally, an advantageous embodiment is achieved by an undulation of the spurs and / or the nail feet at least in the free end region of the spurs and feet. This ensures that the ridge fixing device can withstand even greater loads.

Fig. 1

einen Querschnitt durch den Firstbereich eines Daches, die Firstlatten-Befestigungsvorrichtung gemäß erstem Ausführungsbeispiel verkörpernd,

Fig. 2

den Firstbereich in Längsansicht, ohne Dachlatten und ohne Fistabdeckung, wobei die Befestigungsvorrichtungen unterschiedliche Endhöhen der Sparren kompensieren,

Fig. 3

die Befestigungsvorichtung in Perspektive,

Fig. 4

die Draufsicht hierzu,

Fig. 5

einen Stanzzuschnitt in teilweiser Wiedergabe mit materialsparend anschließendem zweiten Stanzzuschnitt,

Fig. 6

eine Variante des Dornes, und zwar in Erstreckungsrichtung gewellt,

Fig. 7

die Befestigungsvorrichtung gemäß zweitem Ausführungsbeispiel, in Perspektve, wobei die Dorne widerhakenartig gestaltet sind,

Fig. 8

den zugehörigen Stanzzuschnitt,

Fig. 9

eine Zusatzsicherung in Form eines Halteschuhes, als Krallenhalter fungierend, in Perspektive,

Fig. 10

die vom Halteschuh zu übergreifende Firstlatte, ebenfalls in Perspektive und

Fig. 11

in Perspektive ein drittes Ausführungsbeispiel der Firstlatten-Befestigungsvorrichtung, die Einkerbungen an der Außenseite der Nagelfüße wiedergebend.

The subject matter of the invention is explained in more detail below with the aid of exemplary embodiments shown in the drawings. It shows:

Fig. 1

3 shows a cross section through the ridge area of a roof, embodying the ridge slat fastening device according to the first exemplary embodiment,

Fig. 2

the ridge area in longitudinal view, without roof battens and without fist covering, the fastening devices compensating for different end heights of the rafters,

Fig. 3

the fastening device in perspective,

Fig. 4

the top view of this,

Fig. 5

a die cut in partial reproduction with a second die cut subsequent to saving material,

Fig. 6

a variant of the mandrel, namely corrugated in the direction of extension,

Fig. 7

the fastening device according to the second embodiment, in perspective, the spikes being designed like barbs,

Fig. 8

the associated die cut,

Fig. 9

an additional safety device in the form of a holding shoe, acting as a claw holder, in perspective,

Fig. 10

the ridge to be overlapped by the holding shoe, also in perspective and

Fig. 11

in perspective, a third embodiment of the ridge fastening device, the notches on the outside of the nail feet reflecting.

The rafters 1 converging towards the ridge of a roof structure shown only in its upper area rest with their head ends 2 on a purlin beam 3 which runs horizontally.

With the interposition of a roof skin, the tops of the rafters 1 are covered with horizontally extending roof battens 4 and counter battens 5 lying transversely thereto. The roof battens 4 carry overlapping suspended roof covering panels 6. Roof battens 4, counter battens 5 and roof covering panels 6 end at a distance from one another while leaving a so-called fir room 7. The latter is overlaid by dome-like ridge covers 8. To seal the roof interior, in particular the fir room 7, a ridge sealing strip 9, which also enables ventilation of the roof interior, is placed between the ridge cover 8 and the top of the ends of the roof covering plates 6 there.

The ridge cover strip 9 is supported in the ridge vertical plane x-x by a ridge slat 10. A central section 9 ′ of the ridge cover strip 9 lies on this. Said middle section 9 ′ merges into downward and outward-facing edge regions 9 ″. Said edge regions 9 ″ have a fold 11 and thus compensate for the most varied wave profiles of roof covering plates 6 on the market.

Between the lower edge of the ridge covers 8 and the top of the framed edge regions 9 "there remains a clear ventilation gap, indicated by arrow y.

The ridge covers 8 overlapping the ridge batten 10 are fixed to the ridge batten, for example, by nails 12.

The ridge batten 10 is connected to the head ends 2 of the rafters 1 via a series of fastening devices B. For fixing on the rafter side, they have paired nail feet 13. The latter are based on a horizontally oriented support plate 14. The nail feet 13 are directed downwards. They diverge easily. The nail feet 13 are aligned so that they come to rest on both sides of a butt joint 15 running in the mentioned first vertical plane xx, that is also vertical. In this way, they even function as the head ends 2 holding together. The nail feet 13 have a relatively large length, so that in order to achieve a level compensation in the case of rafters with different heights, only a more or less deep driving of these feet is required. The different Raising ends 2 are shown in FIG. 2, from which it can also be seen that there are clearly different nail foot clearances. The nail foot ends are pointed.

From the top of the fastening devices B, more precisely the support plate 14, upward spurs 16 extend. These are also provided at least in pairs. Their free ends, like the free ends of the nail feet 13, are pointed and / or sharpened like a stiletto. After the fastening device B is set, the ridge batten 10 is simply fed in the correct position and pressed against the spurs 16. This can be done effectively with the help of hammer blows. Here, too, height adjustment can be achieved via the driving depth, for example, secured by lining documents.

In all of the exemplary embodiments, the spurs 16 of the horizontal ridge plate support plate 14 are integrally formed on the material, simply by forming cut-out areas, which are then bent at right angles from the area of the plate. Correspondingly bendable metallic material is used. In order to get by practically with a side cut-free cut, these are placed in the area of the edge edges of the ridge slab support plate 14. This is usually based on a square or rectangular plan of the slab, which is converted into a U-profile for surface reinforcement. The corresponding U-fold is clearly shown in FIGS. 3, 7 and 11. The horizontal section of the U-profile that creates the actual support plate 14 is consistently referred to as U-web a. This goes along two parallel longitudinal edges over angular apex areas or Areas of curvature b in U-leg c over. The latter are shorter in the direction of extension than the distance between the two curvature areas b. The ratio is about 2 to 1.

The spurs 16 are formed there by a section of the U-web a, alternately, so that they lie diagonally. If a greater length were required, the material area continuing into one leg c could also be used. So here the spurs 16 are aligned with the approximately vertically oriented U-legs c.

The nail feet 13 provided in pairs can diverge by a few degrees starting from their U-web a. However, the nail feet 13 just below the U-legs c can only pass into the diverging course described. The U-legs initially run parallel.

In the exemplary embodiment of the fastening device B, a one-piece configuration is assumed, in that ridge slat support plate 14, spurs 16 and nail feet 13 are folded from a coherent die cut.

The nail feet 13 start from the U-legs c, but are significantly reduced in width. They taper to the same length towards the free end. To stabilize the surface of the material section producing the support plate 14, this is symmetrically corrugated in the U-plane of the profile. This cross bead has the reference symbol 27. To achieve a flat contact surface for the ridge batten 10, the bead goes down. Your opening points upwards. A reversal takes place in the area of the nail feet 13 in that the bead protrudes toward the outside. The change lies exactly in the area of curvature b of the support plate 14.

The opening of the longitudinal bead directed into the U-cavity bears the reference number 28.

Such fastening devices B can, as can be seen from FIG. 5, be economically punched out of strip material and at the same time beaded by the sections of two adjacent blanks forming the nail feet 13, as can be seen from said figure, overlapping laterally adjacent to one another up to the root area of the basically rectangular, areas forming the support plate 14. Oriented in the longitudinal direction are also the material sections producing the spurs 16, which are folded up here in a diagonal plane.

In order to increase the adherence of the spurs 16 driven into the ridge 10, these are according to the variant 6 corrugated in the direction of extent of the spurs 16. The corrugation immediately adjoins the stretched and beveled tip of the mandrels and can extend to the top of the support plate 14. The undulation is designated 29.

A development that results from the second exemplary embodiment also serves the same purpose (FIGS. 7 and 8). This is a further development of the solution according to FIG. 3, ie the one-piece stamping solution. The spurs 16 are designed there to barb and serrated or serrated. Specifically, it is a sawtooth-like structure. The serration or serration bears the reference symbol 30. It is exaggerated in the drawing to visually emphasize the idea. The number of teeth or teeth can be larger.

In the third exemplary embodiment (FIGS. 9 to 11), the aim is to achieve protection beyond odulation or clawing by using an additional component, namely a holding shoe 31, which engages with a captivating grip on the cross section of the ridge 10 on the support plate 14 which supports and holds it. The holding shoe that forms a kind of claw holder is profiled in a C-shape. Claws 32 directed inward into the C space extend from its C legs. The claws 32 take a fold-back course of approximately 45 ° to the C-leg, which goes back clearly at right angles. The countermeasures which bring the locking into place are realized in the form of notches 33. They are located on the outside of the nail feet 13.

In relation to the other exemplary embodiments, such notches 33 can of course also be on the U-legs c of the U-profiled ridge platen 14 can be realized. In any case, the notches oriented transversely to the extension of the feet 13 are in close succession, so that the holding shoe 31 is almost continuously assigned.

In the third exemplary embodiment too, the spurs 16 are provided with teeth or serrations 30.

As furthermore shown in FIG. 11, at least the end region of the feet 13 is also formed with an undulation 29 lying in the direction of extension of the feet, so that here too the benefit of an even stronger anchoring, here in the head ends 2 of the rafters 1, is achieved.

The same reference numerals are also used in the last two exemplary embodiments. The textual explanations are analogous and are not repeated again.

Claims (7)

1. Roof ridge lath fastening device (B) in the form of a U-shaped shoe, the U-crosspiece (a) of which forms a roof ridge lath support plate (14) and having nail feet (13) issuing from it, the outer edges of which extend in alignment with the limbs (c) of the U and which are provided for driving into the head ends (2) of the rafters (1), characterised in that the U-limbs (C) of the roof ridge lath support plate (14) are constructed oriented in opposite manner to upwardly oriented spurs (16) for penetrating into the roof ridge lath (10) and the nail feet (13) diverge slightly in their downward course.
2. Roof ridge lath fastening device according to Claim 1, characterised in that the roof ridge lath support plate (14), spurs (16) and nail feet (13) are folded from a stamped blank (Figure 17 [sic]).
3. Roof ridge lath fastening device according to one or several of the preceding claims, characterised by a transverse crimping of the roof ridge lath support plate (14) and a longitudinal crimping of the nail feet (13).
4. Roof ridge lath fastening device according to one or several of the preceding claims, characterised by a holding shoe (31) engaging over the roof ridge lath (10) which catches on the roof ridge lath support plate (14).
5. Roof ridge lath fastening device according to Claim 4, characterised in that the holding shoe (31) is constructed as a C-shaped profiled claw holder and grips by its C-claws (32) in notches (33) on the outer side of the nail feet (13) or of the U-limbs (c) of the U-shaped roof ridge lath support plate (14).
6. Roof ridge lath fastening device according to one or several of the preceding claims, characterised by a toothed or indented construction of the spurs (16).
7. Roof ridge lath fastening device according to one or several of the preceding claims, characterised by an undulation (29) of the spurs (16) and/or of the nail feet (13) at least in the free end region of the spurs (16) and of the feet (13).

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