DE7907810U1 - SECURITY RUNG - Google Patents

Description

Safety issue

The present innovation relates to a safety rung with a substantially U-shaped pipe part, the Leg ends are to be anchored in the wall of a masonry so as to prevent people from entering the interior To enable shafts, containers, observation openings and chimneys.

There are already rungs known for such an insert, which generally have a substantially U-shaped tubular part have, the ends of which are intended to be anchored in the wall of a masonry.

Most of the time, there is the pipe part that the Cicherhe.ltssprossen forms, from iron or steel pipe, but then requires her For use in a humid or corrosive atmosphere, the provision of a protective layer, for example made of plastic. However, such a protective layer is not connected to the raw part in a completely leak-proof manner and, moreover, can be damaged by impact, for example, which causes local corrosion of the pipe part at the break point, which can lead to a poor connection and rapid destruction of the entire protective layer.

For this reason, safety bars have already been proposed with a tubular part made of aluminum which is not coated and has good corrosion resistance. In this case, however, the safety rung is not universal usable, especially if it has to be installed in closed places where there is a risk of sparks In addition to the risk of corrosion, there is no dielectric insulating layer on the rung.

To attach the conventional rungs, essentially cylindrical plastic sleeves or sleeves were used for insulation and anchors are provided which have been previously inserted into suitably made holes in the wall of the structure for receiving and holding the leg ends of the rung, which are pressed into these grommets on the spot with the application of force ' became. Such grommets increase the corrosion resistance the rung, as they make cement anchoring superfluous, as does dielectric insulation, | however, have the disadvantage that they can be moved at the moment the rung is pushed in and that the | applied force when pushing the rung into the in the ' Holes arranged grommets damage their outer surface

den can, whereby the anchoring of the rung in the wall down * is set. |

The present innovation is based on the task of this | Avoid disadvantages and a safety rungs with excellent corrosion resistance and excellent dielectric To create insulation that significantly improves anchoring in the wall of the building without the use of cement Masonry allows.

Starting from a safety rungs of those mentioned in more detail at the beginning Art is proposed to solve this problem that the pipe part consists of an outer tube made of Po] / ethylene and a inner tube is made of aluminum, with a substantially cylindrical insulating and anchoring grommet at the end of each leg made of plastic is firmly arranged.

According to a preferred embodiment of the innovation, the outer tube made of polyethylene is provided with longitudinal grooves, while the outer surface of the insulating and anchoring grommets are provided with an annular tooth structure and - their for The base of the end showing the tube part forming the U is provided with a flange.

In the following, the innovation is explained in more detail with reference to the drawing, in which preferred embodiments are shown. Show it

FIG. 1 is a perspective view of a safety rung according to the invention;

Figure 2 shows a section along the line II-II of the security! rung of Figure 1;

Figure 3 shows a section along the line III-III through the

f. spout of Figure 1, and
%

Figure 4 is a plan view of a particular embodiment

| f play the safety rungs according to the innovation.

; The safety rung denoted by 1 in FIG. 1 has a

essentially U-shaped pipe part 2, the leg of which

; · Ends 3, 4 are intended to be anchored in masonry

will. According to the innovation, each leg end 3 and 4 is provided with an insulating and anchoring grommet 5, 6, which is in the

·; is essentially cylindrical and made of plastic. As

FIG. 2 shows that the pipe part 2 consists of an outer pipe 7 made of polyethylene and an inner pipe 8 made of aluminum. The exterior

ι tube 7 made of polyethylene is provided with longitudinal grooves 9, the

reduce the sliding properties. Preferably the outer tube is made of polyethylene with the grooves in a press fit on the inner

Pulled aluminum tube. ,

As an example it should be given that the outer tube made of polyethylene with the grooves have an outer diameter of approximately 25 mm can, with a wall thickness of 2.5 mm, that the inner tube made of aluminum has an outer diameter of 20 mm and a Wall thickness of about 3 mm can have. The length of the legs 3 and 4 of the pipe part can be approximately 210 mm, at a distance of about 330 mm.

As Figure 3 shows, the grommets 5 and 6 are tooth-shaped Structure provided on its outer surface, consisting of a plurality of annular continuous incisions 10, which are not in communication with each other ußd with a triangular cross-section, their depth in the direction to the outer free end 11 of the spout increases. The other end 12 of the spout, which is opposite the free end 11 and to the base of the U formed by the tubular part is provided with a flange 13, the diameter of which is greater than that the spout is.

In the exemplary embodiment shown in FIG. 4, the surface 14 of each flange 13 which faces the free end 11 the spout shows ± n arranged in a plane which has a V-shaped surface angle with the plane perpendicular to the spout axis forms and includes the surface 15 of the flange 13, which is opposite the surface 14, so that the surfaces 14 so are designed so that they essentially correspond to the curvature of the masonry in which the safety rung is anchored and which is indicated by the dashed line.

The insulating and anchoring sleeves 5 and 6 are preferably firmly connected to the safety rung 1 in that they are pushed onto the legs 3 and 4 of the U under force after the tubular part 2 has been produced.

The innovation according to Sicherheitssprdsse has due to the Combination of an outer tube made of polyethylene with an inner tube made of aluminum has excellent dielectric insulation properties and excellent corrosion resistance, since, in contrast to conventional rungs, damage to the outer layer does not cause corrosion of the aluminum core and thus no deterioration in the adhesion of the protective layer.

On top of that, the insulating and anchoring grommets on the

The leg ends of the safety rung are already firmly attached during manufacture, there is a risk of their displacement eliminated when attaching the rung, while on the other hand the attachment of the rung itself simplified is, since only the leg ends 3 and 4 with the grommets 5 and 6 already arranged in the corresponding openings the masonry must be pushed. The anchoring of the toothed ends of the grommets in the Holes is considerably improved because they are no longer separated by the holes that were present when the pipe part was inserted into the Insulating and anchoring sleeves · occurring forces can be damaged.

Claims (6)

Uwe M. Haft '"Patentanwalt Maximilianstrasse 15 D-8000 Munich 22 Tel .: (089) 294818 Telex: 523514 Telegr .: NOVAPAT H 385 M-S = U. Materiel de Securite Urbain, Route d'Ensisheim, 68840 Pulversheim, France Claims for protection 1. Sicherheitsr-prosse with a substantially U-shaped Pipe part, the leg ends of which can be anchored in the wall of a masonry, are thereby marked η 'e t that the pipe part consists of an outer tube made of polyethylene and an inner tube made of aluminum and that at the end of each leg substantially one cylindrical insulating and anchoring grommet made of plastic is firmly arranged. 2. Safety rung according to claim T, characterized in that that the outer tube made of polyethylene is provided with longitudinal grooves. 3. Safety rung according to claim 1 or 2, characterized in that the insulating and anchoring grommet has a tooth-shaped structure which is formed from a plurality of continuous annular grooves which are un dependent on each other , have a triangular cross-section and the depth in the direction of the free end of the -2- Grommet increases. 4. Safety rung according to one of the preceding claims, characterized in that the insulating and anchoring grommet at its end pointing to the base of the U with a Flange is provided. 5. Safety rung according to claim 4, characterized in that that surface of the flange, the zvm free end the spout shows, runs in a plane that forms a dihedral With. the plane perpendicular to the grommet axis. 6. Safety rung according to one of claims 1 to 5, characterized in that the insulating and anchoring grommet in the Press fit. is applied to the leg end of the U.