DE9202734U1 - Cable holder for lightning conductor wires - Google Patents

Description

"Cable holder for lightning conductor wires"

The invention relates to a cable holder for lightning conductor wires according to the preamble of claim 1. Such a cable holder is known from DE-PS 34 39 240. The upper part and lower part are each U-shaped and are firmly connected to one another by a screw which passes through the two crossbars of the "U" of the upper part and lower part and clamps them together. This screw connection also serves to attach the cable holder to a support part. The lightning conductor wire is held between bent, spring-loaded brackets of the upper part and recesses in the side legs of the lower part. The structural effort required for this cable holder is relatively complicated. It is a disadvantage for assembly that the upper part and lower part have to be screwed together to the building or a support of the cable holder. This is cumbersome, and it must also be taken into account that such work must be carried out on site, i.e. usually on a roof, even in bad weather.

In addition, in order to adapt the cable holder to different thicknesses of the lightning conductor wire, as provided for in DE-PS 34 39 240, the distance between the recesses in the legs of the lower part on the one hand and the abutment edges of the spring-loaded holders on the other hand must be changed. This is done by using a washer between the bottom of the lower part and the bottom of the upper part or by grading these two bottoms or by using different recesses in the lower part and twisting the

IQ upper part to the lower part in order to create openings of different sizes for the lightning conductor wires between the abutment edges and the recesses. Such an arrangement is disadvantageous in several respects. To adapt to different lightning conductor wire diameters, the fitter must loosen the aforementioned screw and, if a washer is inserted, even loosen it completely, then carry out the necessary manipulation to adapt to the other wire diameter and then tighten the screw again.

The object of the invention is

Firstly, to simplify a two-part cable holder according to the preamble of claim 1 both in its structural design and thus in its manufacture, as well as in its function, in particular assembly.

The solution to this problem is initially seen, starting from the subject matter of the generic term of claim 1, in the features of the characterizing part of claim 1. This

&ogr;« there are corresponding advantages for both production and assembly. In particular, the lower parts can be attached to a building or the like. The upper parts can then be attached to the lower parts at any suitable time and

O ₅ can also be replaced without having to loosen the fastening between the lower part and the building or the like. The complicated measures of the above-mentioned

The need for state-of-the-art modifications to accommodate lightning conductor wires with different diameters is avoided. In many cases it is sufficient that the upper parts are only dimensioned to hold lightning conductor wires of a certain diameter, since lightning conductor wires of other diameters are not used at all.

However, the invention, based on cable holders according to claim 1, also aims to design these in such a way that they can also meet the requirement, which often occurs in practice, of holding lightning conductor wires of different diameters. Reference is made to the teaching of claim 2 in this regard. The lower part only needs to be available in a single version. This makes production and storage easier. It can initially be fastened to the relevant points on the building, in particular a roof, preferably screwed on, and can be connected to all variants of the upper part adapted to different wire diameters. When changing to holding a lightning conductor wire with a diameter that differs from the previous wire diameter, the screw connection of the lower part to the building does not have to be loosened or removed. These lower parts can already be attached to the building before it is decided what diameter the lightning conductor wires to be held should have. If the lower parts are already assembled, the upper parts required can be connected to them, preferably held in place with the help of a spring-loaded latch (see claim 4). These upper parts can also be manufactured at relatively low production costs and can be easily attached to and removed from the lower part. Another advantage is that, if necessary, lightning conductor wires of a different diameter can be easily switched to an existing lightning protection system. To do this, all that is required is to detach the existing lightning conductor wires, including the upper parts, from the lower parts and

to be replaced by new upper parts and corresponding lightning conductor wires adapted to the current lightning conductor diameter.

It should be mentioned that one-piece line holders with a clamp holder for the lightning conductor wire are also known (e.g. DE-GM 87 09 686 and DE-GM 87 09 447), which are completely different in their design and also do not offer the advantages and problem solution of the invention.

A preferred embodiment of the invention is the subject of claim 5. On the one hand, it enables all existing versions of the upper parts to be placed in the recess or recesses of the lower part in such a way that the relevant surfaces or edges of the upper part and lower part lie snugly against one another. On the other hand, the inner surfaces of the tapered upper part serve to attach lightning conductor wires, even of different diameters, so that only the inwardly bent legs of the upper part need to be dimensioned according to the diameter of the lightning conductor wire to be held by them. One and the same version of the lower part can therefore hold the different versions of the upper parts.

The features of claim 6 allow the lightning conductor wire to be moved in its longitudinal direction relative to its holder on the upper part when it is mounted. Such a movement is both advantageous during assembly and necessary to allow changes in the length of the lightning conductor wire due to different outside temperatures. The features of claim 7 are particularly advantageous in connection with such sliding of the lightning conductor wire relative to the upper part. While in the subject matter of DE-PS 34 39 240 the holders rest on the lightning conductor wire with relatively thin and thus sharp edges and can damage it if it is moved, the bends according to the invention create contact surfaces which, if the

-δ lightning conductor wire in the longitudinal direction, do not scratch or otherwise damage its outer surface. This is particularly important in cases where the lightning conductor wire is made of galvanized iron wire, since any damage to the relatively thin zinc layer will expose the iron and cause rust spots to form.

Further advantages and features can be found in the further subclaims as well as in the following description and the associated drawings of possible embodiments according to the invention. The drawing shows:

Fig. 1: a cable holder according to the invention in plan view,

Fig. 2: a section along the line II-II in

Fig.1,

Fig. 3: a side view according to arrow III in Fig. 2,

Fig. 4: a perspective view.

The cable holder consists of the lower part 1 and the upper part 2 (see in particular Fig. 4). The lower part 1 is "U"-shaped in cross section, whereby the web 3 of the "U" is provided with a hole 4 for screwing to a support or a building, in particular to a roof. The two legs 5, 6 of the "U" are provided with recesses 7 that taper from top to bottom; according to the embodiment, preferably conically in the shape of a "V" converging from top to bottom. "Top" here means the upper area 8 of the cable holder, which can be seen in particular in Fig. 2, into which the lightning conductor wire 9 is pressed in the direction of the taper of the recess 7 according to arrow 10.

The term "bottom" refers to the lower area 11 of the cable holder on the floor 3 of the lower part.

-δ-�I; The lower part 1 is preferably bent from a substantially rigid sheet metal, while the upper part 2 is also bent from sheet metal, but a resilient sheet metal is used. The upper part consists of two brackets 12, 13, which converge from top to bottom and end in a point or rounded portion 14, which forms the tip of the "V". On the upper side, the brackets 12, 13 merge into hold-downs 15, 15', which are formed by bending from the sheet metal material of the upper part 2 and have bends 16, 17 at their lower ends, which form contact surfaces for the lightning conductor wire 9. When the lightning conductor wire is pressed in the direction of arrow 10, the hold-down devices 15, 15' are pushed apart so far that the lightning conductor wire assumes the position shown in particular in Fig. 2, in which it rests on the inner surfaces 18 of the brackets 12, 13 on the one hand and on the bends 16, 17 on the other. The lightning conductor wire 9 is held here by the elasticity of the hold-down devices 15, 15' with spring action. Preferably, however, the parts are dimensioned such that the lightning conductor wire can be moved in its longitudinal direction 19-20.

The upper part 2, in the preferred form of the embodiment explained, a holding bracket with a "V" shape in cross section with the hold-downs 15, 15', is placed with the outer surfaces 21 of its bracket parts 12, 13 against the inner edges of the tapering, preferably also "V"-shaped recesses 7 of the legs 6 of the lower part 1, which have the same shape and course. The arrangement is such that the outer surfaces 21

OQ and the inner edges of the recess 7 fit snugly against each other. As already mentioned, only one lower part of a specific shape is provided, including the recess 7. The upper parts 2 have a shape in the shape and course of the bracket parts 12, 13 and their outer surfaces 21, which

gc fits into the recess 7 and in particular brings about the aforementioned snug fit between its inner edges and the outer surfaces 21, namely in all existing, different

upper parts adapted to different wire diameters. Their adaptation to different lightning wire diameters is achieved by selecting the position of the bends 16, 17 of the hold-downs 15, 15' so that the distance between the bends 16, 17 and the "V" tip is greater or smaller. The fitter takes the appropriate upper parts to install a lightning conductor wire of a certain diameter.

According to a preferred embodiment of the invention, the upper parts are connected to the lower part by locking mechanisms in the form of openings 22 in the bracket parts 12, 13 and the noses 23 of the legs 5, 6 of the lower part 1 that fit therein. When the upper part is inserted in the direction of the arrow 10, the inclined surfaces 24 of the noses 23 cause the bracket parts 12, 13 to bend inwards, i.e. towards each other, until the noses 23 are locked into the openings 22. To release this locking connection, the bracket parts 12, 13 simply have to be bent together against the effect of the spring force of the sheet metal material that pushes them apart, until the noses 23 are outside the openings 22. The upper part in question can then be pulled out upwards.

The bracket parts 12, 13 with the hold-downs 15, 15' can be designed as two pairs, between which there are recesses or openings. This not only saves material and makes it easier to press the bracket parts 12, 13 together as explained above to release the locking mechanism 22, 23, but also creates a space 25 between these two pairs of brackets. Through this space, a screwdriver can easily reach the head of the fastening screw that passes through the recess 4 in the floor 3, without having to separate the upper part from the lower part. If such a hold-down is attached to the roof in an inclined position, snow can slide through this space 25 between the bracket pairs 12, 13 and thus prevent excessive snow pressure on the cable holder. The corresponding

The appropriate design of the hold-down devices 15, 15' in the form of two pairs with a gap between them makes it easier to push the lightning conductor wire in the direction of arrow 10. The fitter only needs one hand for this, so that the other hand is available to hold on to the roof. This is particularly evident in Fig. 4, which is deliberately drawn without a lightning conductor wire inserted in order to be able to better recognize the structural details of the upper and lower parts.

The recess 4 can also be provided with an internal thread if necessary in order to be able to screw it onto a screw of a base support, whereby the base support is in turn attached to the roof.

- Claims 20

Claims (10)

Cable holder for lightning conductor wires with a lower part which can be attached to a support or a building, in particular a roof, and an upper part which can be detachably connected to the lower part, wherein the lightning conductor wire is pressed in the direction of the lower part behind resilient elements of the upper part, characterized in that only the upper part ( 2) has means for holding the lightning conductor wire (9) of a certain diameter, that only the lower part (1) has means for attaching the line holder to a support or a building, and that the detachable connection of the upper part (2) and lower part (1) is independent of the attachment of the lower part to a building or support. Line holder in which means are provided for holding lightning conductor wires of different wire diameters according to claim 1, characterized in that a lower part (1) of a specific design and several designs of upper parts (2) are provided, the lightning conductor wires to be held by the individual designs of the upper part differing from one another by different diameters, and the -&igr;&ogr;&iacgr; upper parts are each dimensioned differently and that the detachable connecting elements of all upper parts fit the corresponding connecting elements of the lower part.
5 3. Cable holder according to claim 1 or 2, characterized in that the upper part (2) is inserted into a recess (7) or onto a corresponding abutment of the lower part (1) can be inserted or placed on top, and that the detachable means are positioned on the upper part and lower part in such a way that they connect the upper part and lower part to one another in the aforementioned position. 4. Cable holder according to claim 3, characterized in that locking mechanisms (22, 23) are provided as releasable means between the upper part (2) and the lower part (1), and that the upper part (2) consists of a resilient sheet and has a shape for bending the sheet in order to open the locking mechanism. 5. Cable holder according to one of claims 1 to 4, characterized characterized in that the lower part (1) has at least one, opposite to the insertion direction (10) of the upper part (2) has a recess (7) which widens, in particular "V-shaped", and that the upper part (2) has a cross-section which tapers downwards, in particular "V-shaped", and that the contours of the aforementioned cross-section of the upper part and the recess of the lower part correspond to one another in such a way that the associated outer surfaces (21) on the upper part, when it is inserted in the lower part, rest against inner surfaces or inner edges (7) of the lower part. 6. Cable holder according to one of claims 1 to 5, characterized in that the upper part consists in cross-section of two brackets (12, 13) which form the cross-section tapering downwards and which taper to a lower level on the upper side. holders (15, 15') which run downwards/inwards from the upper areas of the brackets 12, 13 and form contact surfaces at their ends, the position and distance of which from the inner surfaces of the brackets (12, 13) correspond to the diameter of the lightning conductor wire (9) to be held. 7. Cable holder according to claim 6, characterized in that the contact surfaces of the hold-down devices are bends (16i 17) of the lower ends of the hold-down devices (15, 15'). 8. Cable holder according to one of claims 1 to 7, characterized by a dimensioning of the holding means of the upper part such that the lightning conductor wire (9) is held with a sliding fit. 9. Cable holder according to one of claims 3 to 8, characterized in that the locking (22, 23) exists between the brackets (12, 13) of the upper part and legs (6) of the lower part. 10. Cable holder according to one of claims 1 to 9, characterized in that the lower part (1) is a sheet metal part with a "U"-shaped cross section, the web (3) of which is designed as a base with a recess (4) for screwing to the support or to the building, and that the legs (5, 6) "U" have the recesses (7) or corresponding abutments for supporting the upper part.