DE20000426U1 - Dowels, in particular for attaching insulation panels to building walls - Google Patents

Description

PATENT AND LAWYERS MEINKE, DABRINGHAUS AND PARTNER GbR

ADMISSIONED BEFORE THE EUROPEAN PATENT AND TRADEMARK OFFICE EUROPEAN PATENT AND TRADEMARK ATTORNEYS·

PATENT ATTORNEYS-JULIUS MEINKE, DIPL-ING.

WALTER DABRINGHAUS, dipl.-ing. JOCHEN MEINKE, dipl.-ing.

LAWYER

THOMAS MEINKE

WESTENHELLWEG 67 44137 DORTMUND

TELEPHONE (0231) 14 50 TELEPHONE (0231) 14 76 EMAIL: patent.recht@cityweb.de

PO BOX 10 46 45

44046 Dortmund, 11 Jan 2000

DRESDNER BANK AG DTMD, Account No. 1 148 047 (bank code 440 800 SO) POSTBANK DORTMUND, Account No. 542 02-463 (bank code 440 100 46)

28/15371 D/S

Applicant: Staboplast Kunststoffertigung GmbH Ardever Straße 12, 58730 Fröndenberg/Ruhr

"Dowels, especially for fixing
of insulation panels on building walls '

"Dowels, in particular for fixing insulating panels to building walls"

The invention relates to a dowel, in particular for fastening insulating panels to building walls, with a dowel shaft and an optionally plate-shaped dowel head and a central bore for receiving a further element.

In order to ensure adequate insulation on building walls, it is common practice to apply insulation panels to the existing facade of existing buildings, which are then plastered or bricked. In new buildings, the insulation panels are applied to the bare walls and then plastered or bricked. So-called insulation panel dowels with plate-shaped dowel heads are known for attaching these insulation panels. DE-39 07 034-Al or DE-195 39 041-Al or DE-33 18 800-C2 are just a few examples.

If such insulated walls are clad with clinker bricks, it is known to provide so-called adhesive wires in the raw masonry, which protrude outwards and are then inserted into the joints of the clinker brickwork when the clinker wall is constructed, in order to create a hold between the clinker wall and the raw masonry.

If insulation panels, e.g. foam insulation panels, are placed in front of the raw masonry, which is already provided with a large number of these adhesive wires, this is not only labor-intensive, as the insulation panels have to be pushed over these adhesive wires, but care must also be taken to ensure that these wires protrude at right angles from the raw masonry in order to make it possible to push an insulation panel over them. If the wires are at an angle, this is practically impossible or will immediately lead to the destruction of the insulation panel.

This is where the present invention comes in, the aim of which is to be able to provide adhesion after an insulation has been applied, either directly or indirectly.

With a dowel of the type described at the outset, this object is achieved according to the invention in that an expansion nail is provided in the central bore in the position of use, wherein a pivotable retaining wire is assigned to the expansion nail head.

With the invention it is possible in a simple manner to use the known technology to first fasten the insulation panels with the corresponding insulation panel dowel, whereby the insulation panel dowels serve as a receiving means for the clips or clip wires. It is evident

With the invention it is possible to only attach the anchors to the dowel when the brick wall is being laid. The anchor wire can then be attached to the anchor or to the expansion nail head or can be provided by it.

For this purpose, in an embodiment according to the invention, the clamp wire is bent essentially in an L-shape with a shorter L-shaft and a longer L-bar, wherein the L-shaft is arranged in the head of the expansion nail.

Due to the inventive design of the L-shaped clamp wire, it is possible to either equip the expansion nail with the clamp wire at the factory or to clip it into the head of the expansion nail at the place of use.

The latter design makes it possible to use the dowel with or without a retaining wire, i.e. even if, for example, no clinker wall is built, but the insulation is provided with plaster in the usual way, so that retaining wires are not necessary.

Further embodiments of the invention emerge from the further subclaims. For example, a stop and/or a locking recess can be provided to fix the clamp wire in place, in order to then fix the wire in the working position, i.e. directed outwards, at least laterally.

It has been shown that, depending on the wire used, the head of the dowel needs to be pivoted at least to a certain extent. This pivoting movement is generally counteracted by a large, round, plate-shaped head, so that the invention provides for the plate-shaped head to be arranged asymmetrically on the dowel shaft.

If, for example, a dowel is placed well outside the future joint of the clinker wall, the anchor wire must be bent in the direction of the future joint. The asymmetrical head can then be placed in such a way that it offers as little resistance as possible to this necessary movement without hindering the movement as a whole.

The plate-shaped head can also be approximately triangular in plan view, for example, with the dowel shaft being formed in the area of a corner of the triangle; it can also be approximately elliptical in plan view or take on other corresponding shapes, as the invention also provides.

Further features, details and advantages of the invention will become apparent from the following description and the drawing. This shows in

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Fig. 1 is a simplified sectional drawing in the area of a set adhesive anchor according to the invention,

Fig. 2 and 3 Possibilities for the design of the free end of the L-shaft of an inserted wire clamp as well as in the

Fig. 4 to 11 different designs of the plate-shaped head on the dowel shaft in top view.

The dowel shown in particular in Fig. 1, generally designated 1, has a plate-shaped dowel head 2, a hollow shaft 3 and a merely indicated clamping body 4 formed on the shaft 3. In the position of use, an expansion pin 5 or expansion nail with a head 6 resting on or in the plate 2 is driven into the shaft 3 in order to expand the clamping body 4, which is located in a bore 7 in a masonry generally designated 8.

In order to limit the driving in of the shaft 3, in particular to the thickness of the insulating layer generally designated 9, an impact limiting stop 10 is provided, which is only indicated in Fig. 1. The head 6 of the expansion pin 5 is provided with a transverse bore 11 in order to

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to be able to pivotally fix a wire clamp, generally designated 12, there.

The clamp wire 12 is, as can be seen in particular from Fig. 2 and 3, bent essentially in an L-shape, so that a shorter L-shaft 12a and a longer L-web 12b are produced, which in the position of use can be pivoted outwards in the direction of a clinker brickwork designated 13, not shown in detail, which is indicated by an arrow 14 in Fig. 1.

The fixing of the wire clip 12 can be carried out in different ways, for example at the factory by widening the end of the shorter L-shaft to form a fixing plate 12c or the free end can also be bent over so that a configuration with a shorter wire section 12d is obtained, as can be seen in Fig. 3. Stops or clamping cams 15 can be provided on the head 6 of the expansion element 5 in order to be able to fix the wire clip 12 in its outward-facing position at least temporarily, for example when the clinker wall 13 is being built.

In Fig. 4 to 11 different shapes of the plate-shaped head 2 are shown, whereby it is indicated that the shaft 3 is eccentric or asymmetrical to the respective

selected form, so that the lower part of the head designated 2a in Fig. 1 is not present in the position of use in these embodiments.

Of course, the described embodiments of the invention can be modified in many ways without departing from the basic idea. In particular, the invention is not limited to the type of clipping or fastening of the wire clip 12 in the head 6 of the expansion element or expansion nail 5.

Claims (9)

1. Dowel, in particular for fastening insulating panels to building walls, with a dowel shaft and an optionally plate-shaped dowel head and a central bore for receiving a further element, characterized in that an expansion nail (S) is provided in the central bore in the position of use, a pivotable clamp wire ( 12 ) being assigned to the expansion nail head ( 11 ). 2. Dowel according to claim 1, characterized in that the adhesive wire ( 12 ) is bent substantially in an L-shape with a shorter L-shaft ( 12a ) and a longer L-web ( 12b ), the L-shaft being arranged in the head of the expansion nail. 3. Dowel according to claim 1 or 2, characterized in that the expansion nail ( 5 ) is made of plastic, into which the L-shaft of the clamping wire ( 12 ) is inserted pre-assembled at the factory. 4. Dowel according to one of the preceding claims, characterized in that the L-shaft ( 12a ) of the clamping wire ( 12 ) can be clipped into the head ( 11 ) of the expansion nail ( 5 ) at the place of use. 5. Dowel according to one of the preceding claims, characterized in that the L-shaft ( 12a ) penetrates the head ( 6 ) of the expansion nail ( 5 ) by a certain amount and this region ( 12d ) is angled parallel to the L-web ( 12b ), the angled region serving to lock the clamp wire in its outwardly directed position. 6. Dowel according to one of the preceding claims, characterized in that a stop and/or a locking recess ( 15 ) for fixing in the outwardly directed position of the clamp wire ( 12 ) is provided in the head ( 6 ) of the expansion nail ( 5 ) for the angled area in the outer wall. 7. Dowel according to one of the preceding claims, characterized in that the plate-shaped head ( 2 ') is arranged asymmetrically on the dowel shaft ( 3 ). 8. Dowel according to one of the preceding claims, characterized in that the plate-shaped head ( 2 ') is approximately triangular in plan view, the dowel shaft ( 3 ) being formed in the region of a corner of the triangle ( Fig. 4). 9. Dowel according to one of the preceding claims, characterized in that the plate-shaped head ( 2 ") is approximately elliptical in plan view, the shaft being formed approximately in the region of a focal point of the ellipse ( Fig. 8).