ES2325945B1 - OPTICAL FIBER CORD CABLE FOR SUBSCRIBER ACCESSORIES WITH DIELECTRIC SELF-SUPPORT. - Google Patents

Abstract

Quad fiber optic cable for connections of subscriber with dielectric self-support, comprising five cores in cross separated by bridges (2) of union, of the same material that the outer cover (3); four that are at the ends of the sides of the cross, each incorporating an optical fiber (4) protected by filling elements (5) of aramid, serving of mechanical support for the union of the fibers with the connector; he central core contains a dielectric filler cord (6) of aramid, intended to auto mechanically support the whole cable (1). The fiber optic conductors (4) are of the solid type with secondary insulation of 0.9 mm. For external connections the Cover (3) is made of special polyethylene for weathering and aramid fibers (5) are impregnated by a compound special. For interior connections the cover (3) is of special halogen-free polyolefin.

Description

Quad fiber optic cable for connections of subscriber with dielectric self-support.

Object of the invention

As expressed in the statement herein Descriptive memory, the invention relates to a quad cable fiber optic for self-supporting subscriber connections dielectric.

More specifically, the object of the invention consists of a quadruple fiber self-supporting connection cable optics, which is equipped with a self-supporting connection dielectric to provide fiber optic communications service to subscriber, configuring itself as an innovative alternative to what already known in this field.

The proposed cable is especially intended for fiber rush installations in which it is necessary to provide the end user of the communications service to high speed; communications service facilities of paid by external connection, in which it is necessary that the supply cable is covered with special polyethylene for weathering and that the fiber optic conductors are protected against the action of moisture; and facilities of subscriber communications service through internal connection, in which it is necessary that the supply cable be coated with halogen-free polyolefin, retardant of flame spread and low smoke emission.

Scope

The field of application of the present invention It is within the industry dedicated to manufacturing and installation of cable for telecommunications.

Background of the invention

The evolution of transmission requirements and Receiving increasing volumes of information requires communication services speed assurance of transmission of increasing information. To ensure higher transmission speeds it is necessary to use new types of connection cable with greater bandwidth and lower signal losses at high frequencies.

One of the solutions to give the subscriber telecommunications services with greater bandwidth is the fiber optic cable

For access to the subscriber in buildings in the final installment of the installation is required to install several cables in vertical or horizontal. These cables must be prepared for withstand the mechanical loads to which the cable itself is subjected In this last section. In this last stretch of access, the installation can be done externally by facade or by the interior, through several vertical connections with lengths according to the height of the corresponding housing building. In these installation conditions, the cable assembly must be ready to withstand the mechanical loads that may be submitted, while reliably maintaining the characteristics of fiber optic transmission, these being the main objectives pursued through the present invention, about which, on the other hand, it should be noted that the existence of any other fiber optic cable for connections subscriber presenting technical, structural and similar configuration.

Explanation of the invention.

Thus, the quad fiber optic cable for subscriber connections with dielectric self-support than the invention proposed is configured as an obvious novelty within its field of application, since, according to its creation, it is achieved a fiber optic connection cable capable of resisting the mechanical loads to which it may be subjected in the installation, incorporating a reinforcement element that serves as a car cable assembly support. Said reinforcing element for Self supporting the cable assembly is made of dielectric material, given the dielectric nature of the optical fiber, being used as a self-supporting dielectric material a cord of aramid

On the other hand, and so that the optical fiber of the connection cable for outdoor installations not visible affected by the action of moisture, in the present invention this provided that the optical fiber is protected by elements of aramid filler impregnated especially with elements that block possible moisture penetration into the cable.

For all this, and specifically, the cable fiber optic quad for subscriber connections with dielectric self-support that the invention recommends, is composed by 4 fiber optic conductors distributed in cross. In each end of the cross is a fiber optic cable with secondary insulation and with aramid fiber protection.  Aramid fibers that cover the fiber optic conductor are impregnated with a compound that blocks the penetration of moisture inside the cable. In the center of the cross is find an aramid dielectric cord, intended to serve as self support to the cable assembly. The whole set thus described It is protected by a common outer cover. The four of them fiber conductors and the central aramid are linked together by means of individual bridges of the same material as the cover of the cable.

The described cable therefore represents an innovative structure with structural characteristics and constitutives unknown so far for that purpose, reasons that together with its practical utility, provide it with sufficient foundation to obtain the privilege of exclusivity that is requested.

Description of the drawings

To complement the description that is being performing and in order to help a better understanding of the characteristics of the invention, is attached herein descriptive, as an integral part of it, of a game of planes, in which with an illustrative and non-limiting nature, represented the following:

Figure number 1.- Shows a view schematic in cross section of an embodiment example of quad fiber optic cable for subscriber connections with dielectric self-support object of the invention, being appreciated in it the main parts and elements of which it consists as well as the configuration and arrangement of them.

Preferred Embodiment of the Invention

In view of the described figure 1 and only, and according to the numbering in it adopted, it can be appreciated as the cable (1) in question, which as mentioned consists of a fiber optic self-supporting connection cable of indoor and outdoor, to provide communications services to high speed in the final section of the access facility to the high speed communications service subscriber, includes five cores separated from each other by respective bridges (2) of union, which are formed of the same material as the outer cover (3) covering them, adopting, as appreciate in said figure 1, the cross section of the profile that said nuclei form a cross shape.

Thus, the cable (1) has, on the one hand, with four cores at the ends of the sides of the cross that each one incorporates an optical fiber (4) protected by filling elements (5) of aramid. It should be mentioned that these filling elements (5) serve, in turn, as a mechanical support for the union of the fibers with the connector.

For its part, the central core contains a aramid dielectric filler cord (6), which is especially intended to fulfill the function of auto mechanically supporting the cable assembly (1) and prevent mechanical stresses to which can be submitted are transmitted to the optical fiber itself.

It should be noted that fiber conductors Optics (4) are of the solid type with 0.9 mm secondary insulation as indicated in the figure.

The five cores thus described and coated, are linked together by four connecting bridges (2) and are protected by a cover
common (3).

The common outer cover (3) in the case of Subscriber cable for external connections is polyethylene Special for outdoors. In this case, the aramid fibers of padding (5) that protect the fiber optic elements (4) are impregnated with a special compound that blocks the action of  humidity.

For its part, in the case of subscriber cable for connections inside, the common outer cover (3) is of special halogen-free polyolefin, retardant of Fire spread and low smoke emission.

Describe sufficiently the nature of the present invention, as well as the way of putting it into practice, not it is considered necessary to extend its explanation so that any subject matter expert understands its scope and advantages that derive from it, stating that, within its essentiality, may be implemented in other forms of embodiment that differ in detail from that indicated by way of example, and which will also achieve the protection that collects as long as it does not alter, change or modify its principle fundamental.

Claims (4)

1. Quad-fiber optic cable for subscriber connections with dielectric self-support, of the type of indoor and outdoor cable, intended to provide high-speed communications services in the final section of the subscriber access facility, characterized by the fact comprising five cores separated from each other by means of respective connecting bridges (2), which are formed of the same material as the outer cover (3) that covers them, adopting, the cross-section of the profile formed by said cores, a cross shape ; in which four of said cores, specifically those at the ends of the sides of the cross, each incorporate an optical fiber (4) protected by aramid filler elements (5), said filler elements (5) serving from mechanical support for joining the fibers with the connector; and in which the central core contains a cord (6) of aramid dielectric filler, intended to fulfill the function of mechanically supporting the cable assembly (1). 2. Quad-fiber optic cable for subscriber connections with dielectric self-support, according to claim 1, characterized in that the fiber optic conductors (4) are of the solid type with 0.9 mm secondary insulation. 3. Quad-fiber optic cable for subscriber connections with dielectric self-support, according to claims 1 and 2, characterized in that the common outer sheath (3), in the case of subscriber cable for external connections, is of polyethylene special for outdoors; and because in that case the filler aramid fibers (5) that protect the fiber optic elements (4) are impregnated by a special compound that blocks the action of moisture. 4. Quad-fiber optic cable for subscriber connections with dielectric support, according to claims 1 and 2, characterized in that the common outer sheath (3), in the case of subscriber cable for connections inside, is of special halogen-free polyolefin, retardant of fire propagation and low smoke emission.