DE8901095U1 - Device for attaching installation cables to a substrate - Google Patents

Description

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PATÖ4TAfM(OLD

dring.HANS LICHTI d-75oqKarlsruhes (grötongen)

LJClMCD l/»UTi OURUSCHEH STREET 31

CLHfINER LICMTI TEL: (0721) 4 8511-TELEX: 7 8259« UPA D

DIPL-PHYaDRRERNAT. JOST LfMPERT TELECOPY (0721) 4 8513 TELEQR: UUPAT

Franz Schaaf 9570/89 Lj/ew Tullastrasse 22 30 January 1989

D-6729 Worth-2

Device for fastening Installation lines on a substrate

The invention relates to a device for fastening installation lines, such as pipes, cables or the like, to a substrate, in particular to walls, ceilings or floors of buildings, consisting of a narrow, flexible strip of material which has a support surface for a fastening means penetrating it and which encloses the installation line in the manner of a pipe clamp.

Installation lines in the sense of the invention are understood to mean pipes carrying media, empty pipes, pipes with heat and/or sound insulation, electrical cables, cable harnesses, etc. The invention concerns the fastening of such installation lines to building walls, ceilings or floors. Individual cables are usually fastened with brackets that overlap the cable and have flanges on both sides, each of which is penetrated by a fastening device. Screws, nails, dowels or the like can be used as fastening devices. If a large number of cables are to be installed in the same place,

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, a cable duct is usually laid into which the cables are inserted and fixed. With both methods, the installation is complex and the tools are comparatively expensive.

H Similar fastening methods are known for pipes. If brackets with flanges on both sides are used for this, §§ then two workers are practically required for the assembly, namely one who holds the pipe, the other who inserts, inserts, etc. the fastening devices. Aligning the installation pipes also causes problems.

The device mentioned at the beginning is known for pipelines (DE-GM 73 15 654), which is relatively inexpensive and allows easy installation. The device consists of a flexible strip of material, e.g. made of aluminum, which has a flange at one end that forms a support surface for the fastening device. The strip of material is attached to the substrate with this flange. The material strip also has a tongue punched out parallel to its long edges and a section with a large number of transverse recesses. The tongue is bent upwards from the material strip immediately adjacent to the flange, the installation line is placed on the bent tongue and the material strip still on the substrate is bent around the installation line and one of the transverse recesses is pushed over the tongue. The tongue is then bent back with its protruding end so that the material strip is stretched onto the installation line. This device has the advantage that it can be pre - fixed to the substrate after appropriate measurement, thus enabling the lines to be perfectly aligned. Furthermore, assembly is considerably simplified, in particular it can be carried out by a single person.

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The cost of materials is also comparatively low.

The disadvantage of the known design is that it is only fastened on one side, which can lead to the material strip and the installation cable lifting off the surface when the tongue is bent. The side fastening flange is also a nuisance, especially when two or more cables are to be laid parallel to one another, as this forces the cables to be spaced apart accordingly. Threading the tongue into one of the cross slots in the bracket is also somewhat awkward and can be time-consuming.

The invention is based on the object of designing a device of the initially mentioned structure in such a way that a perfect and secure fastening is possible with little assembly effort.

This object is achieved according to the invention in that the material strip has a central part forming the support surface for the fastening means and enclosing parts extending to both sides thereof, one of which is designed as a narrow tongue, the other as a wider bracket with a recess extending over almost its entire length, the width of which corresponds approximately to that of the tongue, the length of the material strip being greater than the circumference of the installation line.

The design according to the invention has the advantage that the material strip can be secured to the substrate at its middle part using only one fastening device. The installation cable is then placed on this middle part after the tongue has been bent upwards if necessary.

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The bracket is then bent up on the opposite side of the middle section and bent around the installation cable until the recess can be pushed over the tongue. The tongue is then bent back around the closed end of the recess, whereby the bracket is clamped onto the cable. This always ensures that the installation cable is firmly clamped, as the tongue is not bent in a predetermined narrow transverse slot, but always over the web of the material strip that closes the recess. In the assembled position, the material strip encloses the installation cable very tightly, without any protruding parts at the sides, especially not on the substrate. Several installation cables can be laid parallel to one another with the smallest possible distance. The material strip is attached to the substrate with its middle section and the fastening means are covered by the installation cable itself. The material strips can be pre-assembled on the substrate, so that subsequent alignment of the installation cables is not necessary.

The design according to the invention is suitable for any type of installation pipe. It is particularly suitable for media-carrying pipes, especially heating pipes, which are already provided with thermal insulation at the factory in accordance with the latest regulations.

In an advantageous embodiment, the bracket is longer than the tongue, so that it particularly encompasses the installation line on one side, on the top and on part of the opposite side. This ensures that the bent tongue lies on one side of the installation line and/or the thermal insulation and is therefore well protected.

In a further advantageous embodiment, it is provided that the middle part has a flat embossing forming the support surface.

The flat embossing stabilizes the strength of the material strip in the area of the support surface, so that the fastening forces, for example when inserting dowels, bolts or the like, are met with greater resistance. The embossing also has the advantage that a kind of predetermined bending line is provided for both the tongue and the bracket on the other side, which forces bending at both ends of the support surface.

This embodiment is further perfected by the fact that the strip of material has a wide section comprising the middle part and the temple and a narrow section forming the tongue.

For manufacturing reasons, it is recommended that the support surface and the tongue are in the same plane and above the level of the bracket. This design has the additional advantage that the support surface is not deformed when the tongue and the bracket are bent.

Finally, the middle part can have a pre-made hole in the support surface for the fastening device.

A further advantageous embodiment results from the fact that the material strip, starting from the middle part, has two tongues and two brackets, each with a recess for a tongue.

This embodiment can be designed in such a way that - for example to achieve greater stability in

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the fastening of an installation cable - the brackets and the tongues overlap the installation cable one behind the other in the axial direction. Instead, the design can also be such that two adjacent installation cables can be fastened with just one single device, in which one bracket and one tongue overlap one of the two installation cables or both brackets and both tongues overlap both installation cables.

In detail, the tongues and the brackets can be arranged in pairs opposite each other or it can be provided that both tongues and both brackets are arranged next to each other on the same side of the middle part. The selection of one or the other design is primarily a question of expediency.

A modified embodiment is characterized in that the material strip, starting from the middle part, has two brackets running to opposite sides and approximately aligned with one another, each with a recess, and on the middle part two tongues made from the material of the recesses and which can be bent upwards at a small distance from one another.

This design is suitable for fastening two installation cables lying parallel to each other. By placing both cables on the outside of the two tongues that protrude upwards close to each other in the center, the brackets are placed over the tongues from opposite sides and then bent towards the center. Each cable is thus fastened using its own "pipe clamp", but only one device with only one fastening device is necessary. The material strip can also be used in a flat form.

packed and delivered and the tongues can only be K

be bent upwards before installation. Furthermore, this kj

This embodiment is particularly inexpensive because the material of the ||

recesses at the same time forms the tongues and thus a |

minimal waste during punching. |

According to a similar but preferred embodiment '?

example, it is intended that the material strip is made of- f'J

going from the middle part two to opposite sides &khgr;

aligned brackets, each with a recess, and a tongue on the middle section made from the material of only one recess that can be bent upwards.

In this design, there is only one tongue for two brackets. It is also designed for fastening two cables lying next to each other, with the two brackets being bent inwards from the outside over one cable each. First, one cable is placed on the tongue and one bracket is placed over the tongue that protrudes upwards and bent downwards as far as possible on the other side, then the second cable is attached to the tongue or the downward-bent cable.

the end of the first bracket, the second bracket is bent inwards from the outside over this line and its recess is placed on the tongue which is still standing up. The tongue is then bent over the bridge which closes the recess of this bracket in the direction of the first line, so that the second bracket \

a corresponding tensile stress is transmitted. The bent end of the tongue then lies in the space between the two cables and is thus well protected. This device is also very inexpensive and easy to manufacture and two cables are attached with just one tongue. The cables can also be

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described design can be arranged next to each other in a very small space.

It is useful if one recess and the tongue made from its material are longer than the other recess.

In both of the above-mentioned embodiments, the support surface for the cables is not only formed by the middle part 1, but also by the inner areas of the legs forming the bracket. It is therefore advantageous if the embossing on the middle part extends into the legs of the bow and has a length that corresponds approximately to two installation cables arranged next to each other. This ensures that the middle part and the areas of the bracket legs stiffened by the embossing form a flat support surface, and that the brackets bend at the predetermined bending line formed at the end of the embossing during assembly.

The invention is described below using an embodiment shown in the drawing. In the drawing:

Figure 1 is a plan view of an embodiment of the material strip;

Figure 2 shows a section 17 - IZ according to Figure 1;

Figure 3 shows a section through an installation line with thermal insulation in a first assembly phase;

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Figure 4 shows a representation corresponding to Figure 3 in a second assembly phase;

Figure 5 is a representation corresponding to Figures 3 and 4 in the final assembly phase;

Figures 6-8 show a plan view corresponding to Figure 1 of three other embodiments and

Figure 9-11 different assembly phases of the embodiment according to Figure 8.

The material strip 1 shown in Figures 1 and 2, which consists for example of a sufficiently flexible aluminum, has a section 2 with the width a_ and a section 3 with the width b. The section

2 is provided with a closed recess 4 over a large part of its length and forms the bracket 5 in this area, which, according to the recess 4, consists of two parallel narrow strips of material 5" and a web 7 connecting them at the free end. In contrast, the narrower section 3 is designed as a tongue 6 with a full material cross-section.

The material strip 1 also has a central part 9, which has a support surface 10 with a hole 11 prefabricated approximately in the middle for a fastening means 12 (see Figure

3 to 5), e.g. a screw. The width of the support surface 10 corresponds approximately to the width of the tongue 6 or that of the recess 4, while the length of the support surface can be adapted to the extension of the installation line in this direction. The

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The support surface 10 is, as can be seen in particular from the section according to Figure 2, pressed upwards from the plane of section 2 by an embossing 13, so that flanges 14 are formed on both sides of the support surface 10, which lie in the plane and in alignment with the narrow material strips 5' of the bracket 5. The support surface 10, which is arranged higher in comparison, is in turn in the same plane as the tongue 6. This profiling of the middle part 9 gives the material strip in this area increased strength, in particular also increased bending strength. On the other hand, predetermined bending points are created at the ends of the middle part in the area of the transition 15 to the bracket 5 and the transition 16 to the tongue 6 due to the cross-sectional weakening.

The material strip 1 is produced by punching, whereby the hole 11 in the support surface 10 can also be produced by punching or by drilling.

Figures 3 to 5 show the intended use of the material strip 1 according to Figures 1 and 2 in several assembly phases. The material strip 1 is first fixed to the base 17, e.g. to the wall, ceiling or floor of a building, by means of the fastening means 12 passing through the hole 11 in the middle part 9. The material strip 1 extends essentially parallel to the surface of the base 17. The installation line 18 is then placed on, pressed on or the like. The installation line 18 of the design shown is a heating line that expands a pipe 19. The pipe 19 can be designed to carry media or as an empty pipe to accommodate a pipe carrying media. The pipe 19 is surrounded by a thermal insulation 20, which is formed concentrically to the pipe 19 in the upper area 21, while in the lower area

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forms a kind of heat-insulating base 22 against the substrate 17. These installation lines are prefabricated in the factory in the manner shown. As a rule, they are also covered with a protective cover.

The installation line 18 rests with its base 22 on the middle part 9 and covers the fastening means 12. The tongue 6 is then bent upwards until it rests on the side surface 23 of the installation line 18. With its free end 24, the pliers 6 protrudes upwards over the side surface 23. The bracket 5 is then bent upwards in such a way that it rests on the opposite side surface 25 of the installation line and then on the area 21 of the thermal insulation 20 that runs concentrically to the pipe 19. During the last phase of this bending process, the recess 4 in the bracket 5 is pushed over the free end 24 of the tongue 6 and the bracket is pressed downwards towards the side surface 23 of the base 22 (Figure 4). Subsequently, the free end 24 of the tongue 6 is bent downwards by approximately 180 degrees, whereby the tongue 6 bends at the web 7 (Figure 1) of the bracket 5.

As can be seen from the drawing and the previous description, installation lines 18 or installation units of different cross-sections and different heights can be attached to the material strip. The length of the recess 4 in the bracket 5 and the tongue 6 allow sufficient play for this. Several installation lines, e.g. several pipes, cables or the like, can also be attached in a bundle. In general, types of material strip of different lengths are sufficient to cover all requirements.

Thus, in Figures 6 to 8, an embodiment for fastening two parallel lines 18,

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shown in dash-dotted lines in Figures 6 and 7. In the embodiment according to Figure 6, a bracket 5 with a recess 4 and a tongue 6 are connected to the middle part 9 on opposite sides in such a way that a bracket 5 and a tongue 6 are located next to each other on one side of the middle part 9. This is essentially a "duplication" of the embodiment according to Figure 1 in a mirror-image arrangement. Here too, the support surface 10 on the middle part 9 is delimited to the side by embossings 13 and is provided with a central fastening hole 11. In this case, the lines 18, 26 are placed directly next to each other on the support surface 10 and are overlapped from both sides by a bracket 5 and a tongue 6. In the assembled state, the free ends 24 of the tongues 6 are bent in opposite directions to the outside of the two lines 18, 26.

Figure 7 shows an embodiment that is simplified compared to Figure 6. The middle part 9 with the support surface 10 and the central fastening hole 11 is adjoined on both sides by a bracket 5 with a recess 4, which, like the previously described embodiments, is closed _at its ends by a web 7. The recesses 4 are exposed by punching. The material that remains is bent upwards towards the middle part 9 to form a tongue 6 in such a way that the two tongues 6 protrude upwards close to one another in the center of the middle part 9. The embossings 12 that delimit the outer surface 10 on the outside extend into the attachment area of the legs 5' of the bracket 5, so that a predetermined bending point is again formed at the end of the embossings 13. The cables 18, 26 are placed from the outside onto the tongues 6, first one of the brackets 5 is bent inwards, placed over the corresponding tongue 6 and the free end

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the tongue 6 is bent into the space between the cables. Then the other bracket 5 is bent over the corresponding cable, placed on the tongue and its free end is bent towards the other cable.

A preferred embodiment is shown in Figure 1. It also has a central part 9 with a support surface 10 with a hole for a fastening means 12. On both sides of the central part 9,

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Bracket 5 with a recess 4. As can be seen from the drawing, the recess 4 of the bracket shown on the right

5 is longer than that of the bracket shown on the left. The tongue 6 is formed from the material created by punching, and is also bent upwards here. The rest of the support surface 10 is again delimited on the sides by embossings 13, which extend into the attachment area of the legs 5' of the bracket 5 shown on the right, so that predetermined bending points are again created at their ends.

Figure 9 shows a first assembly phase in which, after placing a cable 18 in the angle between the support surface 10 and the protruding tongue 6, the left bracket 5 is bent around the cable and is placed over the free end 24 of the tongue 6. The bracket 5 can be pressed tightly against the outside of the tongue with its web 7. Then the second cable 26 (Figure 10) is placed in the angle between the support surface 10 and tongue 6 or the bent end of the left bracket 5. The right bracket 5 is then bent upwards until it is placed over the free end 24 of the tongue.

6 can be inserted, bending the tongue, the right bracket 5 is bent onto the cable 26 until it assumes the position shown in Figure 10. Then the free end 24 of the tongue 6 is bent to the left in the drawing around the

Web 7 of the right bracket 5 is bent so that the end 24 finally takes the position shown in Figure 11 in which it is "stored" between the two lines 18, 26.

Claims (17)

1. Device for fastening installation lines, such as pipes, cables or the like, to a substrate, in particular to walls, ceilings or floors of buildings, consisting of a narrow, flexible strip of material which has a support surface for a fastening means penetrating it and encloses the installation line in the manner of a pipe clamp, characterized in that the strip of material (1) has a central part (9) forming the support surface (10) for the fastening means (12) and enclosing parts (2, 3) extending to both sides thereof, one of which is designed as a narrow tongue (6), the other as a wider bracket (5) with a recess (4) extending over almost its entire length, the width of which corresponds approximately to that of the tongue, the length of the strip of material being greater than the circumference of the installation line (18). 2. Device according to claim 1, characterized in that the bracket (5) is longer than the tongue (6) . 3. Device according to claim 1 or 2, characterized in that the bracket (5) supports the installation line (18) on one side (25), on the upper side and on a part of the opposite side (23). 4. Device according to one of claims 1 to 3, characterized in that the central part (9) has a flat embossing (13) forming the support surface (10). 5. Device according to one of claims 1 to 4, characterized in that the material strip (1) has a wide section (2) comprising the central part (9) and the bracket (5) and a narrow section (3) forming the tongue (6). 6. Device according to one of claims 1 to 5, characterized in that the support surface (10) and the tongue (6) lie in one plane and above the plane of the bracket (5). 7. Device according to one of claims 1 to 6, characterized in that the central part (9) in the support surface (10) has a prefabricated hole (11) for the fastening means (12). 8. Device according to one of claims 1 to 7, characterized in that the support surface (10) has a length that corresponds to the cross-sectional width of the installation line (18) measured parallel to the base (17). 9. Device according to one of claims 1 to 8/ characterized in that the bracket (5) has a length which is greater than half the length of the exposed circumference of the installation line (18). I I I * 10. Device according to one of claims 1 to 9, characterized in that the material strip (1) has two tongues (6) and two brackets (5) starting from the central part (9), each with a recess (4) for a tongue. 11. Device according to one of claims 1 to 10, characterized in that the tongues (6) and the brackets (5) are arranged opposite one another in pairs. 12. Device according to one of claims 1 to 10, characterized in that both tongues (6) and both brackets (5) are arranged next to each other on the same side of the central part (9). 13. Device according to one of claims 1 to 10, characterized in that the material strip (1) has, starting from the middle part (9), two brackets (5) running to opposite sides and approximately aligned with one another, each with a recess (4) and on the middle part (9) two tongues made from the material of the recesses and bendable upwards at a small distance from one another (6). 14. Device according to one of claims 1 to 9, characterized in that the material strip (1) has, starting from the middle part (9), two brackets (5) running in alignment on opposite sides, each with a recess (4) and on the middle part (9) a tongue formed from the material of only one recess, which can be bent upwards (6). 15. Device according to claim 15, characterized in that one recess (4) and the tongue (6) formed from its material are longer than the other recess. » t Il f If I Il ti I · I* » f · I· III* ¹ · t · - 4 ■» 16. Device according to one of claims 13 to 15, characterized in that the embossing (13) on the middle part (9) extends into the legs (S') of the bracket (5) and has a length which corresponds approximately to two installation lines (18, 26) arranged next to one another. 17. Device according to one of claims 1 to 16, characterized in that the central part (9) in the support surface (10) has a prefabricated hole (11) for the fastening means (12).