DE3050735C2 - Device for fastening fastening elements for flexible plastic pipes for underfloor heating - Google Patents

Description

The invention relates to a device according to the preamble of claim 1.

Plastic pipes for underfloor heating are opened the thermal insulation layer before they are poured into a screed compound. To one sufficient Many fasteners are required for good fixation. To facilitate the attachment of these elements, is already a device of the type specified in the preamble of claim 1 and developed by the DE-GM 76 16 133 became known.

The stapling device known from DE-GM 76 16 133 has a magazine with in series one behind the other U-shaped wire clips.

The foremost clip in the magazine is pushed down by the setting piston and gets into a guide with each of its legs. These guides are hook-shaped at their lower end curved upwards and cause a corresponding deformation when the setting piston is actuated of the two legs of the U-shaped wire clip.

The known device is used to attach the plastic pipes of an underfloor heating system to one on the floor laid out grid. For this purpose, a bar on both sides of the hook-like ends of the guides a plastic pipe to be fastened on the top of the gripping, and then is by actuating a compressed air drive, the set / piston is moved downwards, so that the wire clamp the Plastic tube covered from above and both sides, with their lower ends under the grate and beyond that it is bent upwards again.

The known device is therefore not suitable for driving fastening elements, the jaws for the tubes and a fastening mandrel with its undercut tip in the thermal insulation layer is driven, but rather to connect the wire clamp ™ placed over the pipe a gilter lying on the thermal insulation layer, for example a Saustahlmatte. In addition, is working with the known device is strenuous and time-consuming, since the user of the device is kneeling Working position and having to crawl from driving point to driving point.

The invention is based on the object of providing a device with the features of the preamble of claim 1 to the extent that it enables the fastening elements to be driven in quickly and easily and there is no need for the staff to bend or kneel when driving in.

With the device according to the invention, this object is achieved by the development according to the characterizing Features of claim 1 solved.

Advantageous further developments of the invention are characterized in the subclaims.

The device according to the invention is explained in more detail with reference to the schematic drawings, for example; show it

Fig. 1 and 2 examples of with the device according to the Invention to set holders in the oblique image;

3 shows a schematic, shown partially in section Representation of a device according to the invention for setting holders, and

Fig. 4 shows the device shown in Fig. 3 on a smaller scale Scale in working position.

F i g. 1 shows a fastening element 1 made of hard plastic, which has two resiliently designed, open-topped Has clamping jaws 2 for gripping a plastic tube *. The jaws 2 are integral with a resilient support plate 3 connected.

On the side of the clamping jaws 2 modified Support plate 3 is formed perpendicular to this in the center, a fastening mandrel 9, which at a distance from the Support plate 3 has a pyramidal tip 4. The base surface 6 of the pyramidal tip 4 is via a round shaft 7, the diameter of which is kcinesfalls is larger than the inscribed circle of the base surface 6, connected to the support plate 3.

The side edges of the tip 4 are designed as cutting edges 5. The fastener 1 is thus for all thicknesses of the heat conducting sheet that are common in the construction of underfloor heating are set up.

The tip should not be rounded, but tapered sharply.

To drive the fastener 1 through a semi-hard aluminum sheet of about Work required for 0.5 mm thickness is between 20 and 30 cmkp.

In Fig. 2, a two-part embodiment of the fastening element 1 is shown. With the embodiment of FIG. 1 coinciding training with the same reference / numbers.

The fastening mandrel 9 is a component made of metal that is separate from the clamping jaws 2 and the support plate 3.

At the opposite end of the tip 4

UcfcsligiingsdonisS a pressure plate 10 is attached. The fastening mandrel 9 is through a base plate 3 penetrating hole 11 inserted and injected.

In Fig. 3, a pneumatic device 12 is mounted of the fastening elements 1 shown. The device 12 comprises a handle 13 in which a compressed air hose 14 opens. A tubular set piston guide 15 extends perpendicular to the handle 13, in FIG which at its free end is the end of a magazine

16 joins. The magazine 16 is shown partially in section and contains at least 50 fasteners 1. The magazine 16 made of flexible material is, as can be seen, bent upwards and on a Projection of the handle 13 releasably attached.

As can be seen, the magazine 16 contains fastening elements 1 of the type shown in FIG. 1 shown embodiment or fastening elements 1 of the in F i g. 2 shown Embodiment with an already inserted fastening mandrel 9.

The operation of the in Fi g. 3 is the device shown from Fig. 4 can be seen. In Fig. 4 the floor of a shell is shown in section, on which a thermal insulation layer 18 is applied. The free surface of the thermal insulation layer 18 is covered with an aluminum sheet 17, which carries a grid pattern 19 or a protective film provided with this grid pattern.

The device 12 with the free end of the setting piston guide 15 is approximately perpendicular to the aluminum sheet put on the desired fastening point. For fastening, a pressure is exerted on the handle 13 and at the same time the trigger 20 is actuated. A compressed air operated setting piston grips the at the end of the magazine lying fastening element 1 and exercises on the bottom of the two jaws 2 formed Recess or on the pressure plate 10 of the metal fastening mandrel 9 of FIG. 2 a force that is sufficient to push the tip 4 of the dome 9 through the aluminum sheet

17 to be driven through without this being significantly dented at the fastening position.

The large number of fasteners 1, which are housed in the magazine 16, makes it possible that with the device shown, the fastening elements for the plastic pipe system of an entire heating surface (floor or side wall) can be set, without refilling or changing the magazine is required.

For this purpose 3 sheets of drawings

50

60

Claims (3)

Patent claims: 1. Device for fastening fastening elements for flexible plastic pipes for underfloor heating over a thermal insulation layer with a handle to hold the device, one yourself Set piston guide extending from the handle, a set piston guided in this for fastening the fastening elements, a magazine opening out at the free end of the setting piston guide, which is the fastening element located at the end of the magazine to the action of the setting piston presents, and one that can be triggered by means of a trigger guard, preferably as a compressed air drive trained drive for the setting piston, characterized in that the magazine (16) is designed to receive fastening elements (1) which have a fastening mandrel (9) have undercut tip for driving the same into the thermal barrier coating and that the Set piston guide (15) is of sufficient length to enable the device to be grasped and used for driving the fastening elements (1) into the thermal insulation layer lying on the floor to allow a standing person. 2. Apparatus according to claim 1, characterized in that the front end of the setting piston is designed is that it is when driving the fastening elements (1) against the bottom of the recess between two clamping jaws (2) of the fastening element (1). 3. Device according to one of claims 1 or 2, characterized in that the magazine (16) is a is upwardly curved bar magazine, the rear end of which is detachably attached to the handle (13) is.