DE29620023U1 - Fixing aid for insulation on pipes - Google Patents

Description

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Description

The present invention relates to a fixing aid for insulation on pipelines according to the preamble of the appended claim 1.

It is known from the state of the art to lay pipes for gas and domestic water supply systems under plaster both in private households and in industrial plants and buildings, on the one hand to avoid damage to the pipes due to external mechanical forces, and on the other hand to achieve an improved appearance of the building facades. Such pipes, particularly those installed in the house, are, after they have been laid in appropriately cut out channels in the walls and butt welded or sealed, wrapped with a special insulating tape, which is sold commercially under the name "Misselfix", for example.

This special insulating tape has several tasks to fulfil:

1. The area around the pipes is protected from condensation and aggressive plastering material,

2. Flow noises, especially in water pipes with narrow cross-sections, are reduced,

3. Soldering and welding points are protected against brittle fractures or stress cracks as a result of temperature-related material expansion.

At this point, it should be noted that when laying pipelines in buildings, they must be bent according to geometric or spatial conditions and then welded on site, i.e. within the grooves. This also means, however, that most soldering and welding points can only be visually checked for leaks after the pipe system has been completely installed, for which purpose the welding and soldering points in particular must be freely accessible.

must be. Therefore, the pipelines remain uninsulated in the area of their connection points for their installation and leak testing and must therefore be re-insulated at these soldering points but also at bends and curves etc.

It has now become apparent that this subsequent insulation is extremely complicated and time-consuming, as the insulating tape or sleeve must be fixed to the pipe using, for example, adhesive tape or wrapped wire. It is easy to imagine that proper fastening is not always possible, particularly for pipes laid under plaster, i.e. in the wall, due to the limited space.

In view of this problem, the invention is based on the object of creating a fixing aid for insulation on service water, gas or similar fluid lines, by means of which line insulation of a known type can be securely mounted even in confined spaces.

This object is achieved by a fixing aid having the features of the appended claim 1.

The invention therefore consists in the fact that the fixing aid for pipe insulation is designed as a fastening clip with an open ring or box profile. This clip is simply pressed from the exposed front of the pipe to be insulated onto the insulation material that has already been applied until the clip snaps over the insulation and grips the pipe from behind. Depending on the choice of material and the diameter of the clip, an elastic pressure force is exerted on the insulation material, which prevents the insulation from coming loose from the pipe.

The further development of the subject matter of the invention according to claim 2 provides that the fastening clip is ring-shaped and essentially opens over the area of a quarter of a circle segment. This makes it easier to slip the clip over

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easier and still ensures a secure hold on the insulation.

It is also advantageous according to claim 3 that the fastening clip is made of a plastic material, so that oxidation of the material is avoided. Alternatively, the clip could of course also be made of a rust-proof metal.

Finally, according to claim 5, the fastening clip is bent into two tabs at the opposite, longitudinal ends of the open profile, which extend outwards essentially at an angle of 30° with respect to the imaginary course of the profile and each form a sliding or expanding surface. This makes it easier to slip the clip over the insulation and, on the other hand, provides a better hold, particularly when the plaster is subsequently applied to the wall, in which case the tabs act like two retaining hooks.

Further advantageous embodiments of the invention are the subject of the remaining subclaims.

The invention is explained in more detail below using a preferred embodiment with reference to the accompanying drawing.

This single drawing shows the cross-section of a fixing aid in the form of a fastening clip in the assembled state.

According to the attached figure, the fixing aid consists of a fastening element in the form of a fastening clip 3. The clip 3 in its cross section shows an open ring profile made of a 3/4 circle.

In the preferred embodiment, the fastening clip 3 is made of a plastic material by injection molding and has a predetermined elasticity within a certain deformation range. Alternatively, the clip 3 can also

be made of a non-rusting metal or a composite material.

The diameter of the clip 3 is adapted to the DIN pipes with a cross-section of 12mm, 15-18mm, 22mm etc. and has a slightly larger diameter than the pipe used.

As can be seen from the figure, the opposite ends or flanks 5 of the open ring profile are bent radially outwards to form two tabs 6. The tabs β extend essentially at an angle of 30° with respect to the imaginary course of the ring profile indicated by dashed lines and form two sliding surfaces.

On the side opposite the 1/4 circle opening of the profile, a pressing aid 4 is provided in the form of a base, which is formed in one piece with the fastening clip 3. The base 4 forms a truncated cone-shaped material thickening, which rises outwards with respect to the ring profile and has a recess on its upper side that is dimensioned to fit the thumb of a user. Furthermore, the upper side of the material thickening is provided with a ribbing (not shown in detail) as a slip protection.

To fix an insulation 2 to a pipe 1 that has already been laid and soldered, the insulating tape or the insulating sleeve 2, for example "Misselfix", is wound around the pipe 1 and then the fastening clip 3 according to the invention is attached to the insulation 2 from the outside, i.e. from the exposed front of the pipe 1. By applying a pressure force to the pressing aid 4, the clip 3 moves in the direction of the pipe 1, whereby the two tabs 6 slide on the insulating material 2 on their inner surfaces and in the process expand the open ring profile. As soon as the two tabs 6 or the flanks 5 begin to

the fastening clip 3 is pulled more tightly to the pipe 1 due to the inherent elasticity of its material, whereby the insulating material 2 is clamped and fixed between the clip 3 and the pipe 1.

If the pressure exerted manually on the pressing aid 4 is now reduced, the elasticity of the clip material prevents the fastening clip 3 from coming loose or jumping off the insulation 2. On the other hand, the outwardly protruding tabs 6 serve as barbs that partially hook into the wall in which the pipes 1 are located.

The fastening clip 3 according to the invention thus ensures safe and problem-free subsequent fastening of insulation 2, e.g. even in narrow places, and provides the necessary corrosion protection against the inherently aggressive plaster (gypsum). The clip 3 can of course also be used when insulating outside the wall to prepare long pipes on the workbench or as a temporary fixation of the insulation. In principle, however, the fastening clip 3 according to the invention can be used advantageously wherever insulation such as the well-known "Misselfix" is wound around pipes and the ends of the insulation must be fastened to the pipe in question in order to prevent the insulation from being rewound.

Claims (8)

Harry Bitzer Altdorfer Str. 2 72622 Nürtingen Protection claims 1. Fixing aid for insulation (2) of pipes (1) characterized by a fastening clip (3) with an open ring or box profile. 2. Fixing aid according to claim 1, characterized in that the fastening clip (3) is ring-shaped and is essentially open over the area of a quarter-circle segment. 3. Fixing aid according to one of the preceding claims, characterized in that the fastening clip (3) is made of a plastic material. 4. Fixing aid according to one of the preceding claims, characterized in that the fastening clip (3) is elastic and can be elastically expanded over a predetermined range. 5. Fixing aid according to one of the preceding claims, characterized in that the fastening clip (3) is bent at the opposite, longitudinal ends (5) of the open profile to form two tabs (6) which are essentially located under extend outwards at an angle of 30° with respect to the imaginary course of the profile and form a sliding or expanding surface. 6. Fixing aid according to one of the preceding claims, characterized in that the fastening clip (3) has a pressing aid (4) on its outside directly opposite the open quarter-circle segment. 7. Fixing aid according to claim 6, characterized in that the pressing aid (4) is a base stump which extends essentially perpendicular to the outside of the fastening clip (3) and has an anti-slip profile on its upper side. 8. Fixing aid according to claim 7, characterized in that the top of the base stump is concave.