DE7203070U - Contact clamp for earthing the metallic shield longitudinally watertight telecommunication cable - Google Patents

Description

5885'Schaiksmühle, January 27, 19 '

Utility model registration

Dr. Franz & Rutenoock, 5885 Schalksmühle

Contact clamp for earthing the metallic shield longitudinally watertight telecommunication cable

The invention relates to a contact clamp for grounding the longitudinally watertight seal firmly on the inside of the plastic outer jacket Telecommunication cable adhering metallic screen.

With this type of cable, the metallic shield cannot be grounded using normal cable clamps, as it is residue-free Removal of the outer sheath from the screen is too difficult and time-consuming due to the fixed connection of these two cable parts and the cable structure located under the outer sheath is not sufficiently stable for contact-safe peeling having.

It is therefore a special grounding device for the shield longitudinally watertight Cable has become known, which consists of a to be bent into an overlapping ring, between the screen and cable bundle to be used and provided with a connecting conductor, as well as a separate contact strip that encompasses the outside of the cable Clamp exists. The cable sheath must be cut lengthways along with the metallic shield adhering to it and lift off the bundle of cables so far that the Kentakt strips pushed under him and can come into contact with the inside of the metallic screen.

This known Eriungseinrichtung is particularly disadvantageous in that as si'i-h their assembly, due to their multi-part structure as well as the

awkward Her direction of the contact strip and the cable, designed very time consuming and requires increased care. Zuudom ib / r-H is multi-part, in terms of effort and space requirements and losability of individual parts is unfavorable. It is also disadvantageous that the contact quality between the cable shield and Contact strips depend on the correct tightening of the clamp screw and possible loosening of this later Screw leads to increased contact resistance, and an excessive tightening of the clamp is undesirable Cause pressure loads on the cable cores.

The invention is based on the stated disadvantages to eliminate the described known grounding device, i.e. to look at a device that can be quickly and without special

Can be assembled with care, optimal functional properties and only takes up little space, has a simple structure and no parts that can be lost.

According to the invention, this task is essentially a direct one Contact clamp released, which has a resilient leg, in the longitudinal direction of the cable on a freestanding by removing about half of the cable jacket and bending the K- \ loaders Part of the cable jacket to be slipped on and formed with a clamp strap contacting the inside of the metallic screen is.

When using the contact clamp according to the invention, it is initially advantageous that the preparation of the cable is based on the removal about half of the cable jacket and the bending out of the cable cores limited what can be done quickly and without difficulty. The fc-ing grounding of the metallic cable shield is very possible easily and without special care, since the contact clamp according to the invention is a cohesive, easy-to-use one Unit is that only with their resilient legs on the free-standing part of the cable jacket is plugged. Through the spring

Effect of the clamp legs · a good contact between the clamp and the cable shield is automatically established and maintained over the long term. The resilient clamp legs also have the advantage; dais it so that the contact terminal of the invention can be used for many different wire sizes up seibaILaUy uiiierenien strengths adapt duz cable sheath. During assembly, it also has a favorable effect that the cable cores are no longer exposed to the risk of impermissible crushing, since they lead past the contact terminal. The contact clamp according to the invention also requires very little space and can be produced simply and economically.

Further advantageous features of the contact clamp according to the invention can be found in the following description of the FIG Drawing shown embodiment.

Show it

1 shows the contact clamp in a perspective view and FIG. 2 shows one prepared for detection in this clamp Cable end also in perspective view.

The contact clamp is formed by a clamping bracket 1, which has resilient legs 2, in the longitudinal direction of the cable on one by removing about half of the cable jacket 8 and stripping out the cable cores 11, the part 9 of the cable jacket 8 is freestanding is attached and contacted with the inside of the metallic screen 10 of the cable 7. The clamping bracket 1 is preliminary designed as a flat, edgewise resilient sheet metal stamped part, whereby A maximum of spring action and long-term stability is achieved with the least amount of material and manufacturing. The resilient ones Legs 2 of the clamping bracket 1 have sharp contact or adhesive projections 3, which in the metallic screen 10 of the cable 7 or penetrate into the cable jacket part 9 and improve the contact and make it difficult or impossible to retract the clamping bracket 1.

impede. This effect can be achieved in a simple manner by zahn- or. The barb-shaped design of the projections 3 can be increased or brought to the desired level. The springy shit! 2 are mirror images, wac has the distribution, dsii with the A '^^ - Vpp <} «« clamp 1 on the jacket part 9 or the screen 10 of the cable 7 does not have to pay attention to a certain position of the bracket 1. Leading bevels 4 of the legs 2 make it easier to attach the clamp 1. The clamp 1 is provided with a flexible and insulated connection conductor b to be connected to the earth wire clamp of a junction and distribution box, so that the end of the cable to be earthed can be in any position . The connection conductor 5 can be soldered or squeezed onto the clamping bracket 1 and the connection point can be provided with a piece of insulating tube 6 pushed over. The clamping bracket 1 can also have an integrally molded connection lug which saves a special connection lug. Depending on the arrangement of the clamping bracket 1, for example in a connection and vertical socket, it can also advantageously be part of a grounding device for several cables. In components with tight spaces or with special? If the cable cores are heavily occupied, it can be advantageous if the clamping bracket 1, with the exception of the contact or adhesive projections 3, has an insulating coating.

Claims (9)

Contactor claims: 1. Contact clamp for earthing the telecommunication cable, which is permanently watertight on the inside of the plastic outer jacket adhesive metallic screen, thereby characterized in that it is supported by a resilient leg (2) having, in the longitudinal direction of the cable on one by removing about half of the cable jacket (8) and bending the Cable cores (11) free-standing part (9) of the cable jacket (8) is formed to be attached and with the inside of the metallic screen (10) contacting clamping bracket (1). 2. Kon ⁺ act terminal according to claim 1, dat.-.ch characterized in that the clamping bracket (1) is a flat, edgewise resilient sheet metal stamped part. 3. Contact clamp according to Claims 1 and 2, characterized in that the resilient legs (2) of the clamping bracket (1) sharp, in the metallic screen (10) of the Kaoels (7) or have contact or adhesive projections (3) penetrating the cable jacket part (9). 4. Contact clamp according to claims γυ ^ 3, characterized in that the contact or adhesive projections (3) of the resilient legs (2) are tooth-shaped or barb-shaped. L% contact clamp according to claims 1 to 4, characterized in that that the resilient legs (2) of the clamping bracket (1) are mirror images. υ. Kontaktklemn.e according to claims 1 to ο, characterized in that that they with a z. E. to the earth wire clamp a connection and distribution box to be connected, preferably flexible and insulated connection conductor (ο) is provided. 7. Contact terminal according to claims 1 to 5, characterized in that it is one piece with the clamping bracket (1) Has connection flag. 8. Contact terminal according to one or more of the preceding Claims, characterized in that it is part of an earthing device for several cables, e.g. B. in a connection and distribution box is. 9. Contact clamp according to one or more of the preceding claims, characterized in that the clamping bracket (1) with the exception of de ¹ - contact or adhesive projections (3) has an insulating coating.