DE4327395C2 - Cable for laying in the subscriber access area - Google Patents

Description

The invention relates to a cable according to the preamble of claim 1. For this "Break-out" cables known from the literature are intended for use individual cable elements (e.g. fiber optic (LWL) switching cables) stranded and are surrounded by a common coat. Removing individual cables elements requires special tools and the setting of a sleeve.

(Brochure from BICC Brand Rex without publication date)

Furthermore, cables are known in which several wires are connected via a web or Carrier layer connected next to each other and individual segments can be removed (DE 39 37 695 C1, DE 39 13 674 A1). The laying of these cables in cable duct systems is problematic with extensive corner laying.

In the participant area there is also an optical cable with a variety of bands shaped veins. These veins are in a star-shaped chamber element housed. The individual optical are for the subscriber connection Veins arranged pullable out of the cable (DE 39 37 695 C1).

The manufacturing effort for this cable construction is considerable, because the first individual ribbon-shaped wires are to be produced, which then in to the cable Layer arrangement must be put together.

DE 41 28 935 A1 describes a so-called grooved cable, in which the Transmission elements are introduced loosely, but in a complex manner Capping has to be done. The chamber body (CC1) with the central element (CE) is very unstable due to the large grooves since the transmission elements only lie loosely in the recesses. In addition, the manufacture of the same Cable only possible in several work steps.

DE-AS 11 17 680 relates to an underwater cable, the necessary Tension-resistant support member and the actual cable are stored separately and only at Laying the support member in a groove-like longitudinal recess of the Cable jacket inserted in self-clamping.

The eccentric arrangement of the hawser in self-clamping leads to tension within the transmission lines and thus to loss of transmission quality.  

The invention has for its object to produce a simple manufacturing technology developable cable for laying in the subscriber access area with which problem-free branching of the cable to different participants without Damage to the cable structure and is possible without special tools.

This object is achieved according to the invention by the in the characterizing part of claim 1 specified features.

The measures listed in the subclaims are advantageous further Formations and improvements of the cable specified in claim 1 possible.

Advantageously, individual telecommunications transmission elements in the Branch easily and with little effort through the parallel axis to the transmission elements existing longitudinal slots from the cable element detached and led directly to the junction. There is no tool for this necessary. The stability of the cable is determined by removing individual over load elements not affected.

There is no need to place a sleeve.

Due to the very simple cable construction, in contrast to conventional ones Cable types multiple manufacturing steps, such as B. stranding processes, setting of Cable core, jacket extrusion. For these reasons, the cable can be very inexpensive getting produced.

The invention will be explained in more detail below using an exemplary embodiment.

Show in the accompanying drawing

Fig. 1 shows a 4-core cable in cross section

Fig. 2, the central element.

The cable consists of a central element 1 , which is provided with a central strain relief element 2 for absorbing tensile and compressive forces. In the recesses 8 of the central element, the various transmission elements such as switching lines 3 , 4 , 5 , 6 are retracted during the extrusion process of the central element, depending on the intended use. Here enclose the recesses 8 of the central element 1, the transmission elements 3 , 4 , 5 , 6 cross-sectionally, but not over the entire circumference of the transmission elements, so that longitudinal slots 7 are present in the central element.

Claims (8)

1. Cable for laying in the subscriber connection area, characterized in that in a load-bearing elastic central element ( 1 ) on the circumference telecommunications transmission elements ( 3 , 4 , 5 , 6 ) positively inserted in recesses ( 8 ) and the recesses in the central element on the circumference of the same are, the clear width of the resulting longitudinal slots ( 7 ) of the recesses being smaller than the diameter of the transmission elements ( 3 , 4 , 5 , 6 ), so that the transmission elements ( 3 , 4 , 5 , 6 ) are fixed in place, but detachment from the central element ( 1 ) is also possible. 2. Cable according to claim 1, characterized in that the transmission elements ( 3 , 4 , 5 , 6 ) are designed as fiber optic switching lines, fiber optic loose tubes with individual glass fibers or fiber optic ribbons. 3. Cable according to claim 1, characterized in that the transmission elements ( 3 , 4 , 5 , 6 ) are designed as solid or compact wires. 4. Cable according to claim 1, characterized in that the transmission elements ( 3 , 4 , 5 , 6 ) are designed as current-conducting elements, for example as Cu wires. 5. Cable according to one of claims 1 to 4, characterized in that the recesses ( 8 ) are arranged parallel to the axis in the central element ( 1 ). 6. Cable according to one of claims 1 to 4, characterized in that the recesses ( 8 ) are arranged in the twist in the central element ( 1 ). 7. Cable according to one of claims 1 to 6, characterized in that a strain relief element ( 2 ) is arranged in the central element ( 1 ). 8. Cable according to claim 7, characterized in that the strain relief element ( 2 ) is arranged centrally in the central element ( 1 ).