DE29520081U1 - Insulating plate dowels - Google Patents

Description

fischerwerke

Artur Fischer GmbH & Co. KG

72176 Waldachtal 13 December 1995

M1834
Description

Insulation board dowels

The present invention relates to an insulation board dowel consisting of a plastic sleeve with a bore.

For easy installation on insulation panels made of polystyrene or a similar insulating material, a dowel is required that can be easily inserted into the insulating material and anchored. Using such a dowel, for example, installations of light lights, house numbers or electrical installations on external walls or even cables in cold storage buildings can be attached.

The present invention is therefore based on the object of proposing an insulation panel dowel that is easy to install and ensures a secure hold.

This object is achieved according to the invention by the features of the main claim. The insulation panel dowel consists of a plastic sleeve with a hole that is closed at one end. In the area of the closed end, at least two arcuate channels ending on the outer side wall of the sleeve are arranged in the extension of the hole wall. This results in a hole closure inside the hole that is essentially conical in cross section, which spreads the correspondingly shaped arms of a metal anchor that can be driven into the hole and guides them into the channels. The metal anchor is inserted into the hole with its folded arms and driven into the hole using a setting tool that is matched to the diameter of the hole. This causes the arms to emerge from the side of the plastic sleeve through the channels and essentially grip the insulation material. The arms of the metal anchor cover as large an area of the insulation as possible.

•-•2-

ing material for the bracket, so that if the anchor fails, the insulating material breaks out.

The hole in the plastic sleeve can be provided with or without an internal thread. If the hole is smooth, the dowel is installed using impact mounting. The

Installations can then be attached using standard chipboard screws. According to a preferred embodiment, the plastic sleeve has an internal thread. Installations can be attached in this embodiment by screwing in appropriate clamps. 10

The invention is explained in more detail below using exemplary embodiments. They show:

Figure 1 a sleeve with metric thread;

Figure 2 a sleeve with a smooth bore;

Figure 3 a folded metal anchor;

Figure 4 a dowel with partially inserted metal anchor and

Figure 5 shows a mounted dowel.

Figure 1 shows a cross-section of a plastic sleeve 1 with a hole 2 closed at the lower end 3. In this embodiment, the hole has an internal thread 4. In the extension of the hole 2 there are arched channels 5 that end at the outer side wall 6 of the sleeve 1. The hole closure

7 is thus given a substantially conical shape. In the exemplary embodiment, the plastic sleeve is formed in one piece.

Figure 2 shows a plastic sleeve 1 similar to Figure 1, but the inner wall

8 is smooth. The plastic sleeve is closed here by means of a permanently inserted bore closure 7.

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Figure 3 shows a metal anchor 9 with three bent arms 10 in its folded state. The bending of the arms 10 corresponds to the curvature of the channels 5 in the sleeve 1.

As can be seen from Figure 4, the arms 10 of the metal anchor 9 do not protrude from the side wall of the insulation panel anchor 11. This is only achieved after the anchor has been set by driving in the metal anchor with appropriately shaped tools.

Figure 5 shows a cross section through an insulating plate with an installed insulating plate dowel 11 in which the metal anchor 9 has been driven in to the lower end 3 of the bore 2 and thereby engages in the insulating material 12 by means of the arms 10 and is fixed via the arms 10.

The metal anchor is designed in such a way that it is easy to assemble but on the other hand it is not possible for the arms to bend when loaded to the breaking load.

The impact assembly can be carried out using a mandrel with an appropriate diameter. When using an internal thread in the bore 2, a suitably designed assembly pliers can be attached to the internal thread (as a counter bearing) in order to drive in the metal anchor 9.

Claims (2)

•-•4- fischerwerke Artur Fischer GmbH & Co. KG 72176 Waldachtal 13 December 1995 M 1834 Protection claims 1. A plasterboard dowel consisting of a plastic sleeve with a bore, characterized in that the bore (2) is closed on one side and in the region of the closed end (3) in extension of the bore wall has at least two arcuate channels (5) ending at the outer side wall (6) of the sleeve (1), so that at the end (3) of the bore (2) there is a bore closure (7) which is essentially conical in cross section and which spreads the correspondingly shaped arms (10) of a metal anchor (9) which can be driven into the bore (2) and guides them into the channels (5). 2. Insulation panel dowel according to claim 1, characterized in that the plastic sleeve (1) has an internal thread (4).