CH622869A5 - Pipe clamp, in particular for heating pipes, water-channelling pipes, gas pipes or roof-gutter pipes - Google Patents

Description

The invention relates to a pipe clamp, in particular for heating pipes, water pipes, gas pipes or gutter pipes, consisting of a clamp ring to be gripped with a clamp upper part and lower clamp part and a fastening element fastened or molded onto the lower clamp part, which is intended for fastening the pipe clamp to a wall .

There are clamps for attaching heating pipes, water pipes, gas pipes and the like. Known, the from the pipe encircling clamp ring with upper clamp part and lower clamp part and an attached to the clamp lower part or formed on the wall or the like. to be fastened clamp foot. In these known pipe clamps, both parts of the clamp ring are movably connected to one another.

Pipe clamps of this embodiment are known in particular for attaching gutter drain pipes, in which the two clamp ring parts each have a hinge which is connected by a pin. - On the two free ends, the clamp ring parts have flaps which are bent almost at right angles and which have a bore for Recording a screw bolt are provided so that the clamp ring parts encompassing the tube can be connected to one another. Pipe clamps of this embodiment are relatively expensive due to the design of the hinge, the material and labor involved.

Finally, plastic pipe clamps are known in which the lower clamp part and the upper clamp part are integrally formed, both parts being movably connected to one another by a predetermined bending point. By means of this predetermined bending point, the upper part formed on the lower clamp part can be moved to a limited extent. Both parts are closed by a snap connection or a snap lock. It had been found to be disadvantageous with pipe clamps of this embodiment that only relatively small pipe diameters - in particular when the pipelines were attached in a hanging manner - are held by these pipe clamps, since the latching connection or the latching lock can only absorb relatively low tensile forces. Another disadvantage is that the plastic pipe clamp becomes brittle when exposed to the cold and there is a risk that the upper clamp part will tear off the lower clamp part at the predetermined bending point.

The object of the invention is therefore to provide a one-piece pipe clamp with upper clamp part and lower clamp part, which is characterized by low manufacturing costs and is able to accommodate and carry pipes of larger diameter.

The object of the invention is achieved in that a joint is provided between the lower part of the clamp and the upper part of the clamp, which is designed as a preformed bending point and merges directly and integrally into the lower part of the clamp or upper part of the clamp in the region of its side edges.

It is advantageous if the clamp ring formed from the lower part of the clamp and the upper part of the clamp and the joint point are continuously pressed from sheet metal. The material thickness of the sheet metal strip used can be varied depending on the intended use. In order to increase the stability, the lower part of the clamp and the upper part of the clamp are preferably formed with stiffening beads which extend up to the articulation point, but the beads in the supporting lower part of the clip can be made stronger than in the upper part of the clip. In this way, the suspension of the upper clamp part can be increased or varied in an advantageous manner. In an advantageous embodiment, the bending point can have a molded-in bead extending parallel to the hinge axis and across the entire width of the pipe clamp. In a further advantageous embodiment, the stiffening beads which converge towards one another in the direction of the clamp circumference can pass into the wall surface of the lower clamp part and into the wall surface of the upper clamp part at a distance from one another to form the bending point; the bending point can have a material weakening. In an advantageous manner, the material weakening can be formed by bores arranged in a row. In a further advantageous embodiment, the material weakening can be formed by a series of bores arranged offset in the transverse direction to one another.

In a further advantageous embodiment, the bending point can be provided with a slot running parallel to the hinge axis.

The one-piece production method from only one sheet metal strip enables the pipe clamp according to the invention to be produced economically and efficiently.

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Embodiments of the invention are explained in more detail below with reference to the drawings.

Show it:

1 shows a clamp according to the invention in a perspective view with a preformed bending point;

FIG. 1A shows a section according to FIG. 1;

Figure 2 shows a clamp according to Figure 1 in another embodiment;

Figure 3 shows a clamp according to the invention in a further embodiment, in which only the lower clamp part is provided with beads;

FIG. 4 shows a closed pipe clamp according to FIG. 1 with an inserted pipe;

Figure 5 is an illustration of the locking connection used in Figures 1 and 2;

FIG. 6 shows a tab connection for pipe clamps according to FIG. 3;

FIG. 7 bending point with a slot running parallel to the joint axis as material weakening;

FIG. 8 bending point through holes arranged in a row as material weakening;

FIG. 9 bending point through a series of bores arranged offset in the transverse direction to one another as material weakening;

FIG. 10 bending point as an unsinked area on the circumference of a pipe clamp; and

FIG. 11 bending point in another embodiment according to FIG. 10.

As can be seen from the example in FIG. 1, the pipe clamp according to the invention consists of the semi-ring-shaped clamp upper part 1 and the semi-ring-shaped clamp lower part 2. Both clamp ring parts 1 and 2 are formed in one piece from steel band and by a molded-in bead 3 forming the bending point, which extends over the entire Width extends, and runs parallel to the hinge axis 4, interconnected. The clamp foot 5 is formed or arranged directly on the lower clamp part 2. Both clamp ring parts are stiffened with outwardly facing beads 6 and 7, which extend parallel to the respective side edges of the lower clamp part 2 and the upper clamp part 1. The beads 6 and 7 are formed with a semicircular cross section. However, any other conceivable cross-sectional shape can also be used instead.

At the two free ends of the clamp ring parts 1 and 2, the elements of a known snap connection are attached or formed. The locking connection elements 8, 10 are designed so that for locking - as can be seen from Figures 4 and 5 - the nose 8 in the in

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substantially right-angled tab 9 formed slot 10 fully occupies, so that the locking connection elements 8 and 9 are secured against lateral displacement.

5 In the pipe clamp shown in Figure 2, the connection between the clamp ring parts la, 2a is given by a bending point 11, the beads 12 and 13 reaching from both sides to the actual bending point 11. FIGS. 10 and 11 show exemplary embodiments for forming the bending point 11.

One would first have to assume that the joint formed by a preformed bend 4 or a bending point 11 does not provide sufficient stability to hold the locking lug 8 securely in the locking slot 10. Surprisingly, however, i 5 this design of the articulation point ensures that these snap closure parts 8 and 10 are held together securely when the pipe clamp is closed, as can be seen from FIG.

The pipe clamp shown in FIG. 3 has a clamp lower part 15, which is also stiffened by stiffening beads 14, but in this embodiment the clamp upper part 16 is embodied without a bead. A slot 18 running parallel to the hinge axis is formed at the bending point 17 for the purpose of weakening the material. Due to the bead-free design, the suspension property of the upper clamp part 16 is increased. In contrast to the embodiments already described, both free ends of the clamp ring parts 15 and 16 are also provided with brackets 19 and 20, which are also bent essentially at right angles, as can be seen in particular from FIG. 6. When the pipe clamp closes, the laying tabs 19 and 20 are each provided with a bore 21, through which a screw bolt is passed, in order to thus firmly connect the two tabs 19 and 20 to one another.

FIGS. 7, 8 and 9 show exemplary embodiments for forming a bending point 11 by means of material weakening. For example, as shown in FIG. 7, material weakening at the bending point 11 can be carried out by forming a slot 22 extending parallel to the hinge axis. In another embodiment, according to FIG. 8, material weakening in the region of the bending point 11 is achieved by a number of bores 23 arranged in a row. FIG. 9 shows a modification of the bore arrangement shown in FIG. 8, the bores 24 in the region of the bending point 11 being arranged transversely to one another.

45 FIGS. 10 and 11 show exemplary embodiments for forming a bending point 11 without material weakening. The degree of flexibility of the bending point 11 is determined by the embodiment of the stiffening beads 25 and 26.

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2 sheets of drawings

Claims (10)

622 869 PATENT CLAIMS 1. Pipe clamp, in particular for heating pipes, water supply pipes, gas pipes or gutter pipes, consisting of a clamp ring to be gripped with the upper clamp part and lower clamp part and a fastening element fastened or molded onto the lower clamp part, which is intended for fastening the pipe clamp to a wall, characterized in that that a joint is provided between the lower clamp part (2, 2a, 15) and the upper clamp part (1, la, 16), which is designed as a preformed bending point (4, 11, 17) and in the area of its side edges directly and in one piece in the lower clamp part (2 , 2a, 15) or upper part of the clamp (1, la, 16). 2. Clamp according to claim 1, characterized in that the lower clamp part (2) and the upper clamp part (1) are formed with stiffening beads (12, 13; 6, 7) extending up to the articulation point. 3. Clamp according to claim 2, characterized in that the stiffening beads (7,13) on the lower clamp part (2,2a) are stronger than those (6,12) on the upper clamp part (1, la). 4. Clamp according to claim 1, characterized in that the bending point (4) has a molded bead (3) extending parallel to the hinge axis and across the entire width of the pipe clamp. 5. Clamp according to claim 1, characterized in that the stiffening beads (12, 13; 25, 26) converging towards one another in the direction of the circumference of the clamp at a distance from one another to form the bending point (11) into the wall surface of the lower clamp part (2a) and into the wall surface of the upper part of the clamp (la). 6. Clamp according to claim 5, characterized in that the bending point (11) has a material weakening. 7. Clamp according to claim 6, characterized in that the material weakening is formed by bores (23) arranged in a row. 8. Clamp according to claim 6, characterized in that the material weakening is formed by a series of holes (24) arranged offset in the transverse direction to one another. 9. clamp according spoke 1, characterized in that the bending point (17) is provided with a parallel to the hinge axis slot (18,22). 10. Clamp according to one of claims 1 to 9, characterized in that the lower clamp part and the upper clamp part and the hinge point are pressed continuously from sheet metal.