DE8516327U1 - Retaining clip for heating pipes of underfloor heating - Google Patents

Description

10

15th

20th

HOLDING CLIP FOR UNDERFLOOR HEATING TUBES

The innovation relates to a retaining clip for heating pipes of underfloor heating systems with a clamp-like grip around the heating pipe Holding arms on a foot part, in particular with openings for passing through the wires of a reinforcement mat, and with pointed ones protruding from the underside of the foot part Fastening cams with side barbs for clawing in an insulation board with a harder top layer. Such retaining clips are usually manufactured as an injection molded part from commercially available plastics.

Because when laying the very rigid heating pipes, especially with tight bending radii, a large one If lateral pressure is exerted on the clip, it must sit firmly in the insulation board so that it does not tear out. All the more so if it is designed as a combination clip, i.e. for fastening in insulation panels and on structural fabrics, and thus, due to its construction, it has a height that creates an unfavorable lever ratio. The side Barbs on the fastening cams counteract the pull-out force by engaging from below the harder top layer, which is firmly connected to the insulation board. However, there is a risk of that in the event of large forces occurring, the barbs pierce the cover layer from below and tear it open.

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The innovation is based on the task by appropriate Arrangement and formation of the barbs such a penetration of the 'top layer from below in the case of sizes to prevent occurring forces.

According to the innovation, this task is due to a Formation of the retaining clip released, as characterized by claim 1. Further training of the innovation are described in the subclaims.

According to the innovation, the barbs are resiliently resilient at such an angle with respect to the direction of indentation from the fastening cams that when the retaining clip is pulled up, the barb spreads elastically and with increasing surface contact it lies against the underside of the insulation board cover layer '.. By rounding and a correspondingly broad formation of the barbs this elastically in its entire width to the underside of the cover layer, so that the surface pressure is low remains and the top layer can withstand the pressure. The clip is made according to the yielding of the barbs the insulation board pulled out so that it assumes an inclined position, but this is irrelevant for its function.

The innovation is shown below using the attached

Drawings explained in more detail. Show it

1 shows a front view of a mounted retaining clip when pressure is applied from the side; and

FIG. 2 is a side view of the retaining clip from FIG. 1.

The retaining clip according to FIGS. 1 and 2 has, on a foot part 1, a heating pipe 2 which encompasses retaining arms like pliers 3 and 4 on. In the foot part 1, which is cross-shaped in cross section and has a foot plate 5, there are openings 6 and 7 designed to pass through the wires (not shown) of a reinforcement mat. From the underside of the footplate 5, with which the retaining clip on a thermal insulation board 10 made of foamed plastic with a rigidly connected rigid film 11 can be put on as a top layer, fasteners are

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gungsnockeri 12 and 13 with barbs 14 and 15 for clawing in the thermal insulation board 10. There are four Fastening hooks 12 and 13 are provided, although in ', individual cases two fastening hooks at diagonally opposite points on the footplate 5 are sufficient.

The fastening cams 12 and 13 protrude substantially perpendicularly from the base plate 5 downwards, with the outer surfaces 8 and 9, on which the barbs 14 and 15 are attached, are inclined inwardly in a wedge shape. The lower ends of the mounting cams 12 and 13 are beveled both in the front view of Figure 1 and in the side view of Figure 2, whereby a Tip results, which easily penetrates into the upper hard film 11 of the insulation board 10 when pressure is applied to the retaining clip. Due to the bevel 16 or 17 falling from the inside to the outside according to FIG. 1, when pressure is applied to the retaining clip a pulling cut made so that the retaining clip is also reduced !. Force must be pressed into the insulation board can. The barbs 14 and 15 adjoining the bevel 16 and 17 to the outside lie when pressed in into the insulation board 10 on the fastening cams and expand elastically after complete penetration because the foamed plastic only offers little resistance.

The barbs 14 and 15 extend almost as far as the upper rigid film firmly connected to the foamed plastic 11. They are slightly curved outwards and their free ends are rounded. With side pressure P on the retaining clip, the latter assumes an inclined position as shown in FIG Foil and he in the picture on the right · by yielding the barbs. 14 is partially pulled out. The elastic.- yielding Barbs 14 are due to their rounding, their * width b and their:. arcuate curvature with increasing surface against the underside of the hard film 11, so that the surface pressure remains low and the film can withstand the pressure. A runaway does not take place

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instead of. When pressing in the mounting cams 12 and 13 resulting foil tear edges 18 and 19 lie down in the space between the fastening cams and üiö barbs, so that the barbs are unhindered can spread out through these tear edges against the underside of the rigid film 10.

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Claims (3)

Contactor claims: 1. Retaining clip for heating pipes of underfloor heating systems with retaining arms encompassing the heating pipe like pliers a foot part, in particular with openings for the passage of the wires of a welded wire mesh, and with from the underside Pointed fastening cams protruding from the foot part with side barbs for clawing in an insulation board with a harder top layer, characterized that the barbs (14, 15) are resiliently resilient at such an angle with respect to the direction of depression protrude from the mounting cams 0-2, 13J that at By pulling up the retaining clip, the barbs are elastically removed and they move against each other with increasing surface contact the underside of the insulation board top layer isgen. 2. Haiteklipp according to claim 1, characterized in that that the barbs £ 14, 15j are curved in an arc protruding outwards. 3. retaining clip according to claim 1 or 2, daäurch
characterized in that the barbs (l 4, 15) are formed with a wide and rounded free end. 4 4 144 «I · * • i · I · I «4,444 4,444 t I