EP2096229B1 - Spacer for thick wall-plastering system - Google Patents

Description

The present invention relates to a spacer element which serves for the positioning of tissue mats before the plastering of outer walls, corresponding fastening systems and methods for mounting the same.

The DE 32 00 784 A1 describes a Putzarmierung with a wire mesh tape. In this case, a projecting through the plate into the building anchor is provided with an attached thereto head for attaching the wire mesh belt, on which the wire mesh tape is mounted. The attachment is made by means of the bead of the pin and the recess in the anchor. A secure anchoring of the head does not seem to be guaranteed here. In particular, only a relatively small contact surface - both on the top and on the bottom - provided, which is disadvantageous in view of a high power transmission. In addition, the teeth arranged on the head can cause unwanted marks in the plaster.

From the DE 82 12 983 U1 For example, a fabric fastener is known which is used in conjunction with an insulation panel dowel. The Isolierplattendübel is provided with a retaining plate, in which openings are formed, in which for fixing a Armierungsgewebes or a grid mat on the retaining plate clip-like, resilient holding parts are pressed. The holding parts, however, have an outwardly curved head plate, which - depending on the plaster thickness - can lead to visual impairment of the outer surface. In addition, the holding parts have very pointed locking elements, which pose a risk of injury to the construction staff.

The DE 85 12 251 U1 discloses a wire grid as a support for an at least single-layer plaster layer, which is held by means of a plurality of spacers at a distance from the Dämmmaterialplatte. The spacers are designed as dowels with a dowel neck penetrating the insulating material plate and a dowel shaft protruding beyond the contact side of the insulating material plate and projecting at least partially. The dowels each have a first and a second plate head, wherein the second plate head is provided with a central conical plug insert, with which this can be inserted into the central opening of the first plate head. This solution has the disadvantage that over the screw heat is dissipated to the outside.

In the DE 87 14 335 U1 a spacer for the reinforcement of Armierungsgittern is described, which has a pressure plate on which a substantially tubular spacer element is arranged, which is dimensioned in its axial length to match the thickness of an insulating layer. In this case, the spacer has two holding elements, which extend substantially parallel to a contact surface of the contact element. The two holding elements each have a free end and are in the form of hook-like projections. Each holding element has a distance from the contact surface, which is selected to match the diameter of a region of a reinforcing grid to be held. The possibility of Aufsteckmontage is not provided here.

From the DE 299 09 236 U1 Finally, a plaster facade dowel for fixing an insulation layer on a building surface is known with a dowel shaft for receiving a spreader nail, an expandable by the spreader nail expansion zone and a retaining plate on which a spacer means for fixing a Armierungsgewebes is arranged. In this solution, there is again the risk that there will be formation of thermal bridges, since the spreader nail is in contact with the spacer.

The invention has for its object to provide a spacer element, fastening systems and methods with which standard insulation holder can be used, the distance of a fabric mat can be made variable, a high power transmission can be ensured, the formation of thermal bridges can be avoided, the optical Properties of the plaster layer are not affected and with which no risks for the construction staff are connected.

According to the invention the object is achieved by the spacer element according to claim 1, by the fastening system according to claim 6 and by the method according to claim 7.

The spacer element comprises a cover plate, on the narrow sides of which each support elements connect, which correspond to a pressure plate of an insulation holder. The fastening system is used for attaching a lattice-shaped structure and consists of an insulation holder with a pressure plate, a spacer element with a flat, substantially rectangular cover plate, adjoin the narrow sides holding elements that correspond to the pressure plate of the insulation holder, and a clip. The method is used for mounting a fastening system and comprises the following steps: sliding a spacer element onto a pressure plate of an insulation holder, setting the insulation holder, applying a grid-like structure to the spacer element, and fixing the grid-shaped structure by means of a clip.

According to the invention, the holding elements of the spacer element are each formed from a substantially perpendicularly extending from the cover plate to the side wall and a substantially perpendicular from the side wall inwardly projecting retaining projection. Due to this configuration of the spacer element, the latter can be simply pushed by the construction staff on a standard insulation holder and secure Ensure hold. Due to the provided surface contact of the spacer element on the pressure plate of the insulation holder, a drop of the spacer element can be more effectively prevented, as for example by a weak locking connection.

In a preferred embodiment of the invention, nose-like elements are arranged on the underside of the cover plate of the spacer element, which rest in the mounted state on the upper side of the pressure plate of the insulating material holder. By means of these nose-like elements, the distance between the grid-shaped structure or the fabric mat and the insulating material in interaction with the side walls can be made variable. In other words, the vertical dimension of the nose-like element determines the height of the spacer element. The nose-like elements are regularly arranged approximately at half the radius of the spacer element and ensure a high stability of the spacer elements.

In another preferred embodiment of the invention, the spacer element has at least one opening in the cover plate, which corresponds with at least one corresponding opening in the pressure plate of the insulation material holder. On the one hand, such an opening may be arranged centrally in the cover plate, so that it is aligned with the central opening of the insulating material holder for receiving the expansion element. The fabric mat can then be fixed by means of a corresponding clip on the spacer element. In principle, there is also the possibility that the cover plate also contains further openings, which may in turn correspond to further openings in the pressure plate, so that when using a clip with a corresponding number of locking elements, an even more effective fixation of the tissue mat may be possible , Of course, such a clip with three latching elements could also be used in a non-claimed embodiment without a spacer element for fixing a fabric mat to a pressure plate of a fastener.

In a further preferred embodiment of the invention, the at least one opening in the cover plate of the spacer element comprises a bevelled area. As a result, the insertion of the / the locking elements of the respective clip is facilitated.

Preferably, the side walls of the support elements of the spacer element are each formed bent. In this way, a particularly accurately fitting system of the spacer element is achieved on the pressure plate of the insulation holder.

Preferably, a latching element is arranged on the underside of the clip, the at least one latching element of the clip is cylindrical and has a substantially centrally disposed latching projection. Thus, a fixed latching with the spacer element or pressure plate can be achieved in each case.

In a further preferred embodiment, the lower edge of the at least one cylindrical latching element is formed substantially horizontally. When using a clip which penetrates through the central opening in the cover plate into the central opening of the insulating material holder, it is not necessary that the locking elements or -nose feet cut into the insulating material. But even with locking elements or feet, which are to penetrate into the insulating material (eg, clips with three feet, which are to be used without spacers), no particularly sharp shape is required because regularly only one use with easily deformable materials in Consideration comes. In this way, a risk of injury to the construction staff can be avoided.

In another preferred embodiment of the invention, latching elements (usually three or five) are arranged on the underside of the flat plate element of the clip and the plate element has at least one opening. through a clip designed in such a way can be achieved a particularly effective fixation of a fabric mat.

Fig. 1a

eine perspektivische Ansicht eines erfindungsgemäßen Abstandhalterelements;

Fig. 1b

eine weitere perspektivische Ansicht eines erfindungsgemäßen Abstandhalterelements, welche die nasenförmigen Elemente genauer veranschaulicht;

Fig. 2

eine perspektivische Ansicht einer ersten Ausführungsform eines Clips zum Fixieren einer Gewebematte;

Fig. 3a

eine Querschnittsansicht eines ersten erfindungsgemäßen Befestigungssystems im Endmontagezustand;

Fig. 3b

eine perspektivische Ansicht des in Fig. 3a gezeigten Befestigungssystems;

Fig. 4a

eine perspektivische Ansicht einer zweiten Ausführungsform eines Clips zum Fixieren einer Gewebematte;

Fig. 4b

eine Querschnittsansicht des in Fig. 4a gezeigten Clips;

Fig. 4c

eine Draufsicht auf den in Fig. 4a gezeigten Clip;

Fig. 5a

eine Querschnittsansicht eines alternativen nicht beanspruchten Befestigungssystems im Endmontagezustand; und

Fig. 5b

eine perspektivische Ansicht des in Fig. 5a gezeigten Befestigungssystems.

Based on the drawings, the spacer element of the invention, the clip and the fastening system according to the invention or its assembly are illustrated. Show it:

Fig. 1a

a perspective view of a spacer element according to the invention;

Fig. 1b

a further perspective view of a spacer element according to the invention, which illustrates the nose-shaped elements in more detail;

Fig. 2

a perspective view of a first embodiment of a clip for fixing a fabric mat;

Fig. 3a

a cross-sectional view of a first fastening system according to the invention in the final assembly state;

Fig. 3b

a perspective view of the in Fig. 3a shown fastening system;

Fig. 4a

a perspective view of a second embodiment of a clip for fixing a fabric mat;

Fig. 4b

a cross-sectional view of in Fig. 4a shown clips;

Fig. 4c

a top view of the in Fig. 4a shown clip;

Fig. 5a

a cross-sectional view of an alternative unclaimed mounting system in the final assembly state; and

Fig. 5b

a perspective view of the in Fig. 5a shown fastening system.

In Fig. 1a a spacer element 1 according to the invention is illustrated. The cover plate 2 of the spacer element 1 is flat and has a substantially rectangular shape. In this context, "substantially rectangular" means that, in particular, the narrow sides 3 of the cover plate 2 are formed such that, as can be seen, they can also have a slight curvature or bending. On the narrow sides 3 of the cover plate 2 are each followed by support elements 4, which correspond to the pressure plate 11 of an insulation holder 10 (see. Fig. 3a ). In connection with the spacer element 1 according to the invention, standard insulation holders 10 are used, so that simple pushing on site, ie on the construction site, is made possible. The support elements 4 are each formed from a substantially vertically extending from the cover plate 2 downwardly extending side wall 5 and a substantially perpendicular from the side wall 5 inwardly projecting retaining projection 6. Here, "substantially perpendicular" means that, depending on the design of the corresponding insulation holder 10, slight deviations from the vertical may also occur. Furthermore, nose-like elements 7 are arranged on the underside of the cover plate 2. As in Fig. 1b to better see, these nose-like elements 7 extend regularly over the entire width of the cover plate 2. The nose-like elements 7 may also be formed as individual pins and / or extend only partially across the width of the cover plate 2. Furthermore, the cover plate 2 in the embodiment shown on a central opening 8. The central opening 8 comprises a bevelled area 9, which ensures easier insertion of matching clips or their latching elements. It can also be seen that the side walls 5 of the support elements 4 are each formed bent. This bend corresponds in each case with the curvature or the bending of the narrow sides 3 of the cover plate 2. Between the cover plate 2 and the side walls 5 and between the retaining projections 6 and the side walls 5 are, as in Fig. 1b shown, in each case notches 52, 56 are provided, which allow a slight expansion of the side walls 5 and the retaining projections 6, when the spacer element 1 is applied to an insulator holder 10.

The Fig. 2 shows a clip 30, which is used for fixing lattice-shaped structures 20 and tissue mats to a spacer element 1. In the illustrated embodiment, the clip 30 consists of a flat plate member 31 on the underside of a locking element 32 is arranged. The latching element 32 is cylindrical and has a substantially centrally arranged latching projection 33. In this context, "essentially arranged centrally" means that, depending on the configuration of the spacer element 1 or of the pressure plate 11, slight deviations downwards or upwards are conceivable. The cylindrically shaped latching element 32 comprises two recesses 35 which provide the flexibility of the clip 30 necessary for latching. In addition, the lower edge of the cylindrical locking element is formed substantially horizontally. By "substantially horizontal" is meant here that although a slight bevel may be present, but that does not represent a significant injury potential for the construction staff.

In the FIGS. 3a and b shows an inventive fastening system consisting of an insulation holder 10, a spacer element 1 and a clip 30 in the final assembly state. It can be seen that between the underside of the plate member 31 of the clip 30 and the top of the cover plate 2, the lattice-shaped structure 20 and the fabric mat is fixed. The latching projection 33 of the cylindrical latching element 32 is in engagement with the underside of the cover plate 2 and the remainder of the cylindrical latching element 32 protrudes into the central opening 12 of the insulating material holder 10. In preferred embodiments, the clip 30 and the clip 30 and the spacer element 1 may also be so be configured that with the clip 30 is a complete seal of the central opening 12 of the insulation holder. The nose-like elements 7 lie on top of the pressure plate 11 and the side walls 5 together with the inwardly projecting retaining projections 6 clasp the underside of the pressure plate 11. The connection between the clip 30, fabric mat 20, spacer element 1 and insulation holder 10 is thus produced particularly stable, so that the fabric mat and applied plaster layer can not cause deformation or damage to the fastening system. Due to the large-area support on the spacer elements 1, the fabric mats 20 can be kept at a uniform distance from the wall and an excellent stabilization in particular of the plaster layer, which are applied in greater thicknesses effect. In Fig. 3b It is easy to see how the clip 30 fixes a lattice square of the fabric mat 20 on the upper side of the cover plate 2 of the spacer element 1. With regard to the assembly of this system, the spacer element 1 is first pushed onto the pressure plate 11 of the insulation holder 10. Then the insulation holder 10 is set. The setting is done, depending on the type of spreader used, with a standard setting tool (drill, bit, screwdriver, hammer, etc.). Subsequently, the latticed structure or the fabric mat 20 is applied to the spacer element 1 and finally the latticed structure 20 is fixed by means of the clip 30. The clip 30 protrudes into the opening 12 of the insulation holder 10 inside. It is also conceivable to design the clip 30 (and accordingly the opening 8 in the cover plate 2) in such a way that it ensures a seal of the opening 12 of the insulating material holder in order to prevent any penetration of moisture.

In the FIGS. 4a to c , an alternative embodiment of a clip 30 'for attaching a fabric mat 20 is shown. This clip 30 'has three circumferentially arranged locking elements 32' and is primarily used only together with fasteners 10, which have corresponding circumferential openings in the pressure plate 11, this use is not is claimed. However, it is also conceivable that such a clip 30 'is used together with a correspondingly modified spacer element 1. The three latching elements 32 'are arranged on the underside of the plate element 31', wherein the plate element 31 'has a central opening 34' and three circumferentially arranged openings 34 "The central opening 34 'is aligned in the installed state with the opening 12 of the fastening element or 16. Insulating material holder 10, so that the spreading element (not shown) remains accessible even after the clip 30 'has been put on. The peripheral openings 34' are provided primarily for reasons of saving material. In the FIGS. 4a and b, in particular, the locking elements 32 'are shown in detail. These each consist of two hook-like elements 36 ', which are separated from each other by a recess 35', whereby the necessary flexibility is provided. The two hook-like elements 36 'each comprise a substantially centrally arranged latching projection 33'.

In the FIGS. 5a and b is an unclaimed fastening system for attaching a grid-shaped structure 20 is shown, which consists of a fastener 10 with a pressure plate 11 and a clip 30 ', on the underside at least one locking element 30' is arranged. Here, the lattice-shaped structure or the tissue mat 20 lies directly on the pressure plate 11 of the fastening element 10. The three circumferential locking elements 32 'are each latched with corresponding peripheral openings 13 in the pressure plate 11, wherein the latching projections 33' rest against the underside of the pressure plate 11. The opening 12 of the fastener 10 and the central opening 34 'of the clip 30' are aligned over each other. Fig. 5b shows how the clip 30 'fixes a plurality of grid squares of the fabric mat 20 on the upper side of the pressure plate 11 of the fastening element 10. The assembly of the fastening system initially comprises the step of setting the fastening element 10. Subsequently, the latticed structure 20 is applied to the fastening element 10 (or its pressure plate 11) and then fixed by means of the clip 30 '.

Claims (7)

1. Spacer element (1) for positioning of a grid shaped formation (20) in a distance above a pressure plate (11) of an insulation holder (10),
   characterized in that
   the spacer element (1) substantially comprises a rectangular designed cover plate (2), at its slightly curved narrow sides (3) to each side holding elements (4) are adjacent, whereby the holding elements (4) are formed out of a side wall (5), substantially perpendicular extending downwards from the cover plate (2), as well as a holding overhang (6), substantially perpendicular protruding inwards from the side wall (5), so that the spacer element (1) can be slid on a circular pressure plate (11) of an insulation holder (10).
2. Spacer element (1) of claim 1, characterized in that at the bottom side of the cover plate (2) nose mannered elements (7) are arranged which in the mounted situation rest on the upper side of the pressure plate (11) of the insulation holder (10).
3. Spacer element (1) of one of the preceding claims, characterized in that it comprises at least one opening (8) in the cover plate (2) which corresponds to at least one corresponding opening (12) in the pressure plate (11) of the insulation holder (10).
4. Spacer element (1) of one of the preceding claims, characterized in that the at least one opening (8) in the cover plate (2) encompasses a chamfered area (9).
5. Spacer element (1) of one of the preceding claims, characterized in that the side walls (5) of the holding elements (4) are convolutely designed.
6. Fastening system for attaching of a grid shaped formation (20) consisting of:

   a) an insulation holder (10) with a pressure plate (11);

   b) a spacer element (1) of claim 1; as well as

   c) a clip (30) to which bottom side at least an engagement element (32) is arranged.
7. Method for assembling a fastening system, comprising the following steps:

   a) sliding on a spacer element (1) of claim 1 onto a pressure plate (11) of an insulation holder (10);

   b) mounting the insulation holder (10);

   c) placing a grid shaped formation (20) onto the spacer element (1) of claim 1; and

   d) fixing the grid shaped formation (20) by ease of a clip (30) to which bottom side at least an engagement element (32) is arranged.

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