DE7530187U - Cable sleeve, with a metallic support jacket and sleeve heads adjoining these on both sides, as well as a covering that connects these parts to one another - Google Patents

Description

Walter Rose KG, 5800 Hagen, Lütkenheider Strafte 2

"Cable sleeve, with a metallic support jacket and sleeve heads adjoining these on both sides, as well as a sheath ^{11 connecting these parts to one another}

The invention relates to a cable sleeve with a metallic one Support jacket and sleeve heads adjoining this on both sides, each with at least one cable entry and an umbra connecting the support coat with the muff's heads casing and in the connection area between this casing and the sleeve heads in the latter arranged metallic support rings, which can be positively connected to the support jacket in the longitudinal direction.

With a known socket of this type (PTZ standard FTZ 736 6 TV 4, dated June 1966), the socket heads and the slotted casing are made of polyethylene, which are mutually and Cable sheaths are connected by means of swell welding, whereby very complex electrical welding control devices are required and a large amount of time is required for the connection

7530187 19.6178

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is necessary, as can best be seen in the aforementioned PTZ standard.

It has therefore already been proposed to use two metallic end rings interconnected support jacket parts directly a one-piece plastic shrink tube to apply, both for sheathing the metallic support jacket and the cable, i.e. immediate serves as a cable entry. However, it has proven to be disadvantageous that such a shrink tube is a very different shrinkage capacities in its metallic ones Support jacket covering middle area and in the end areas forming the cable entrances must have. A particular problem arises with several cable entries at one end of the sleeve insofar as as a result, the seal between the terminating cables has not yet been satisfactorily solved. Besides, the Attachment of a pressure valve, which is required in many cases, to such an encasing shrink tube not possible"

The object of the invention is to create a solution which, on the one hand, only requires a small amount of equipment and Requires time to assemble the sleeve and, on the other hand, ensures an excellent seal at all critical points.

7530117 19.1171

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Bel a cable sleeve of the type mentioned wick This object is achieved according to the invention in that the sleeve heads made of suitable plastic only Im The area of the cable ducts is designed to be heat-shrinkable and that the casing consists of a split support jacket and surrounding the connecting edges of the socket heads Plastic shrink tubing is made.

Due to this design, there is a perfect seal between the cable entries of the sleeve heads and the cables opening into these, as well as between the connecting edges of the sleeve heads and the casing, and without the need for a large outlay in terms of equipment, since only an external one is required for this purpose Heat is required at the cable entries and in the connection area between the sheath and the sleeve heads, what in a simple way by means of hot air showers or a soft flame can be done.

Particularly good tightness is obtained if an adhesive layer is provided in the connection area of the old four socket heads inside the optional shrink tubing and inside the cable entries on the socket heads, which liquefies at the temperature required for shrinking. This has the advantage that if there is a corresponding change, the leakage of the liquefied adhesive is indicated at the same time that a sufficient shrinkage temperature has been reached.

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Appropriately, you can continue to the support rings on their inner ducks with a radially upward Provided beaded edge with which this grip behind corresponding inwardly directed beaded edges of the support manvel parts. This results in an excellent connection between these parts in the longitudinal direction the socket.

It is advisable to have the support jacket parts in the connected state with the support rings aligned on the outside with the socket heads, so that the enveloping Shrink tubing also runs smoothly over the support jacket and the connecting edges of the socket heads can extend.

Finally, one of the two socket heads can be used in its non-shrinkable transition area between Arrange a pressure valve in the chamber entrances and connecting edges.

The invention is explained in more detail below with reference to the drawing, for example. This shows in

Pig. 1 shows a longitudinal section of a cable sleeve according to the invention with a sleeve head with a cable entry at one end and a sleeve head with two cable entrances at the other end and in

Pig. P an enlarged detail point A of FIG. 1.

The cable sleeve shown in the drawing consists essentially of two metallic semi-cylindrical support jacket parts 1 with inwardly directed beaded edges 2, the rear outwardly directed; Beaded edges 3 of metallic support rings ¹ I grab, which latter extend into the Vexbindungsrand Il of a socket head 5 with a cable entry 6 at one end and at the other end in the connecting edge 12 of a socket head 7 with two cable entries 8 of different diameters.

A pressure valve 9 is also arranged in the socket head 6, namely in the transition area 10 between the cable inlet 6 and the connecting edge 11.

Inside each of the cable entries 6 and 8 is an adhesive layer IH and inside the ends of the shrink tube 13 an adhesive layer 15 made of an adhesive that becomes liquid when the shrinking temperature is reached for the cable entries and the surrounding shrink tube.

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With regard to the socket heads 5 and 7, it is essential that they are produced or treated accordingly Only heat-shrinkable in the area of their cable entries 6 and 8 are, i.e. essentially in the area of their connections in the connection margins Remain dimensionally stable even when heat is applied.

The cable sleeve described above is installed in the manner described below:

First, the cable sheaths of the cables opening into the sleeve are removed so that there is enough wire stock for the sleeve splice, then the cable sheaths are cleaned in a piece corresponding to the length of the cable entries 6 or 8 and roughened in the radial direction with emery paper or the like and then rubbed off with methylene chloride or the like. Then the previously selected heat-shrink tubing 13 according to the connecting edges 11, 12 of the socket heads 5, 7 is pushed over the cable to be connected to one end of the socket. Then the socket heads selected according to the cables to be connected are pushed over the cable ends, whereby care must be taken » that one socket head with and the other without a pressure valve is selected. Then the cable set-off edges are brought into the correct spacing position and the cable ends η on both sides are firmly fixed. Then the sleeve splice is carried out, after which the metallic support jacket parts 12 with their inwardly directed flanged edges 2 behind the

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outwardly directed flanged edges 3 of the support rings H located in the connecting edges 11, 12 of the socket heads 5, 7 are engaged (see Fig. 2), whereupon the two support jacket halves are temporarily fixed with an adhesive tape. Then the cable entries 6 and 6 are then heated with a large, soft flame, ie one without a sharp flame cone, or with a hot air shower by constantly moving the heat source back and forth, the heating being expediently carried out from the transition area 10, ie from the non-shrinking area . The heating is carried out progressively then shrinkage corresponding to the end of the cable outlets, with the achievement of the sufficient shrink temperature by leakage of parts of the adhesive layer ¹ * 14 indicates. After the shrinking of both socket ends, in which it must be ensured that the socket head with pressure valve points upwards, both socket heads are roughened on the outside in the area of their connecting edges 11, 12 with emery paper Λ »the like and then rubbed off with methylene chloride If the shrink tube 13 is pushed over the sleeve and fixed in this way, let the edges of the shrink tube protrude slightly over the connecting edges 11, 12 of the sleeve heads. Then you begin the heating of the shrink tube 13 in the manner described above from one end of the shrink tube, expediently from the end of the shrink tube facing the pressure valve 9, until the shrink tube is calibrated around the

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The connecting edge of the socket head in question has placed the adhesive layer 15 with the escape of adhesive, whereupon the shrink tube is heated evenly all around this is completely shrunk to the opposite end. After the end of the shrinking process, the sleeve is left in a quiet position for about 30 minutes, whereupon the muff «can be contributed in the normal way.

Of course, the embodiment described can be modified in many ways, without the basic idea of Invention to leave. For example, the connection between the support jacket parts and the metallic Support rings of the socket heads also take place in another way. More than two metallic ones could also be used Support jacket parts can be provided and socket heads with more than two cable entries can also be used, and the like. more.

Expectations :

Claims (1)

Benefit: 1. Cable sleeve with a metallic support jacket and on both sides on each of these subsequent hips with at least a cable entry and a sheath connecting the support jacket to the sleeve heads and in the connection area between this cover and the socket heads in the latter arranged metallic support rings, which can be positively connected to the support jacket in the longitudinal direction, characterized in that the from ge ~ ) » Plastic existing socket heads (5,7) were only suitable in 7. ti Bv η area of the cable entrances (6,8) are designed to be warmesqhrumpffähig and that the sheathing consists of a split support jacket (1) and the connecting edges (11,12) of the Sleeve heads surround fend Plastic shrink tubing (13) consists. 2. Cable sleeve according to claim 1, characterized in that in the connection area with the sleeve heads (5,7) inside the enveloping shrink tube (13) and in the Inside the cable inlets (6,8) on the sleeve heads an adhesive layer (14,15) is provided, which is at the Liquefied shrinkage required temperature. 3. Cable sleeve according to claim 1 or 2, characterized in that the support rings (4) at their inner ends with a radially outwardly directed beaded edge (3) are provided, behind which corresponding inwardly directed beaded edges (2) of the supporting parts (1) grip. 7530107 19.M.78 tli ι ι »«. H. Cable sleeve according to claim 3 »characterized in that
the support jacket parts (1) in the Verbiiidungsstaat with the
Flush the support rings (4) on the outside with the socket heads (5J). 5. Cable sleeve according to claim 1 or one of the following, characterized »that at one of the be? .Den sleeve heads (5,7) in the non-shrinkable transition area (10) between cable entries (6) and connecting racks (11)
a pressure valve (9) is arranged.