DE3010987C2 - Connector for an electrical cable having a plurality of conductors, a shielding jacket and a sheath - Google Patents

Description

characterized by the entirety of the following features:

a) the two sleeve bodies (28, 40) adjoin one another via metallic abutment surfaces (45, 59);

b) the shielding jacket (14) of the cable (10) is in the tubular end (30) dts a sleeve body (28) inserted;

c) the sheath (20) of the cable (10) formed from waterproof material is over the outer surface the tubular end (30) of the one sleeve body (28) turned inside out;

d) the casing (20) of the bucket (10) is through a compression sleeve (34) clamped tightly on the tubular end (30) of the one sleeve body (3i).

2. Connector according to claim I, characterized in that the shielding jacket (14) of the cable (10) abuts a shoulder (32) formed in the interior of the tubular end (30).

The invention relates to a connector according to the preamble of claim 1.

A connector of this type is known from GB-PS 10 45 162. He has a sleeve that consists of two metallic sleeve bodies. The two sleeve bodies are connected to one another by a union nut screwable. A conical insulating body made of elastic material is inserted into the sleeve. To this Purpose, the sleeve has a correspondingly designed conical inner surface on its Jem cable facing End on. Several contact elements are inserted into the bores of the insulating body, at which the ends of the Head of the cable are soldered. With this connector, no measures are taken to prevent penetration to prevent moisture from getting inside the connector.

Furthermore, the electromagnetic shielding, which is achieved by the two metallic sleeve bodies and which is formed this connecting union nut, no very high demands. Action that good cause electromagnetic shielding also at the transition of the shielding jacket to the metallic sleeve, are not provided.

From DE-OS 20 48 694 a similarly constructed connector is known, but in which the metallic Sleeve is formed in one piece. There is a union nut on the end of the sleeve facing the cable screwed on, through which, in connection with an elastic cable grommet, a strain relief and a seal against moisture is achieved. The shielding jacket and the outer sheath of the cable are through the cable grommet passed through into the interior of the metallic sleeve. By tightening the union nut the cable grommet is pressed together on the sheath of the cable This well-known connector Although it enables good electromagnetic shielding, since the sleeve is in one piece and continuous is designed, but leaves the watertightness to be desired left over. Furthermore, the connection of the cable ends to the contact pins is made more difficult in that the Sleeve body is formed in one piece.

Furthermore, from DE-AS 14 40 186 a connector for coaxial cables is known in which a longitudinally slotted Sleeve is inserted between the shielding jacket and the cable jacket, whereupon the shielding jacket is wrapped around the end of this sleeve. The end of the coaxial cable prepared in this way is pushed into the interior of a metal sleeve, and then a union nut is attached to the external thread screwed onto the metal sleeve By screwing on the union nut, the casing of the Coaxial cable pressed tightly against the surface of the slotted sleeve in this way one for many Purposes achieved sufficient waterproofness of the connector. This known connector is, however particularly suitable for coaxial cables; Measures that allow easy connection of several conductors of one Electric cables are not provided.

The object of the invention is to develop a connector of the type described above so that that the waterproofness and the electromagnetic shielding are improved.

This problem is solved by the teaching of patent claim 1.

An advantageous further development of the invention is specified in claim 2.

In the connector according to the invention, good electromagnetic shielding is achieved because the two sleeve bodies abut one another via metallic abutment surfaces, with the union nut in addition overlaps these abutment surfaces. Since the shielding jacket is also in the tubular end of the cable facing sleeve body is inserted, can also at the transition between sleeve body and shielding jacket no electromagnetic fields can penetrate. The waterproofness of the invention Connector is ensured that the sheathing of the cable by a compression sleeve on the tubular The end of the sleeve body facing the cable is clamped, which is due to the mechanical Strength of the tubular end with high clamping force and therefore can be done very safely.

An embodiment of the invention will now be described in more detail with reference to the drawing, In the drawing shows

Fig. 1 is a perspective view of a connector with a mounted cable;
FIG. 2 is a longitudinal section of that shown in FIG

it's connector and cable along the 2-2 in Fig. 1; and

FIG. 3 shows a representation similar to FIG. 2. at the however, the individual components of the connector

to explain the assembly are partially exposed and detached from each other.

F i g. Figure 1 shows a shielded cable 10 with a connector 12 attached to its end the cable 10 mechanically and electrically with a suitable panel connector or one not shown same cable can be connected. According to FIGS. 2 and 3, the cable 10 has a conventional, flexible one Pipeline formed shielding jacket 14, for example by winding a single strip or tape of permanent material is formed in an overlapping helical fashion, to enable a mechanical connection between the adjacent turns 16 de. «= shielding jacket, although adjacent turns can roll on each other and have limited lateral bending of the Allow pipelines.

A spun or braided cover 18 is arranged over the inner shielding jacket 14, which also by interweaving in opposite helical directions a plurality is formed by separate threads or wires. An envelope 20 made of insulating material, for example Rubber, is applied over the braided cover 18, making it tubular Shielding jacket 14 waterproof

Inside the shielding jacket 14 are a number of separate axially extending ones Arranged ladders 22, of which only three are shown in the drawing and denoted by the letters a, 6 and c are. These conductors 22 are protected against a mechanical shielding jacket, which is designed as a pipeline Bending beyond a certain limit and protected against shear forces.

The ends of the shielding jacket 14 and the lines 22 are, as mentioned above, with the connector 12 connected. The connector 12 has a sleeve, generally designated 24, which consists of two sleeve bodies 28 and 40 consists of the sleeve body 28 is formed with a tubular end 30. The tubular End 30 is somewhat larger than the outer dimensions of the shielding jacket 14, so that the end 30 can accommodate the shielding jacket 14 telescopically and overlap. The sleeve body 28 still has an inner annular shoulder 32 against which the free end of the shielding jacket 14 abuts.

The rubber casing 20 of the shield jacket 14 fits over the tubular end 30 of the ferrule body 28 when the cable 10 is inserted into the end 30 and using mechanical means. A compression sleeve 34, which fits over the tubular end 30 and the Umhül'ung 20, is on this Envelope 20 is tightened, whereby tubular end 30 is firmly deformed against shielding jacket 14 can be.

The sleeve body 40 has an annular shoulder 42 and an external thread 44 approximately in its center, the between the shoulder 42 and the annular abutment surface 45 of the sleeve body 40 adjacent the sleeve body 28 is formed. An insulating block 46 is arranged within the sleeve body 40. A number of contact pins 48 are inserted into corresponding bores which are formed through the insulating block 46 are. For each leader 22a. 226, 22c, etc., a contact pin 48a, 486, 48c, etc. is provided. The ends 49a. 496, 49c, etc. of each contact pin 48 are over a radial surface 50 of the insulating block 46 in the direction towards the shielding jacket 14.

A somewhat oversized conical insulating body 51 made of rubber is inserted into the sleeve body 28 and has a plurality of tubular passages 52a, 526, 52c, etc., which are each aligned with the contact pins 48. The individual conductors 22 are passed through the passages 52 in the insulating body 51 and overlap with the ends 49 of the contact pins 48. Furthermore, they are connected to these for secure electrical contact by binding, soldering, folding, pressure or the like. The insulating body 51 overlaps the connection points of the conductors with the ends 49 of the contact pins 48 and holds the conductors 22 in correct alignment with one another and with respect to the protruding ends of the contact pins 48. Furthermore, it ensures a tight seal of the connection points between the individual conductors and the contact pins.

The sleeve body 28 also has an end portion 56 which the inner shoulder 32 opposite the shielding edge! 14 is further away in the end portion 56 a bore surface is arranged, which diverges conically at 58 } ,; η shape away from the shoulder 32 and to a cylindrical inner surface 58a and an annular shoulder 586 to a larger cylindrical surface 58c tapered . The insulating body 51 has a cylindrical surface 57c, an annular '.. shoulder 576 and a slightly conically tapering surface 57. If the annular abutting surfaces 59 and 45 of the sleeve body 28 or of the sleeve body 40 abut against one another, a slight overdimensioning of the insulating body 5! this is compressed in the axial and radial direction between the surrounding surfaces 58, 58a, 586 and 58c of the sleeve body 28 of the radial surface 50 and / or the inner cylindrical surface 45a of the sleeve body 40.

whereby the insulating body 51 tightly encloses the conductors 22 and the contact pins 48. Furthermore, there are the abutting surfaces 59 of the sleeve body 28 and the abutment surface 45 of the sleeve body 40 in firm contact with one another, whereby a good electromagnetic shielding of the conductors is created.

An annular union nut 60, which is provided at one end with an inwardly turned annular lip or flange 62, rests against a shoulder 64 on the sleeve body 28. The union nut 60 is provided with an internal thread 66 which can be screwed onto the external thread 44 of the sleeve body 40. Thus, after the flange 62 has come to rest on the shoulder 64, the union nut 60 can. brace the sleeve bodies 28, 40 so that the abutment surfaces 45 and 59 are pressed against one another. This process continues to press the insulating body 51 firmly against the conductors 22a, 226 and 22c passing through it and the contact pins 49 ending therein.
7. The connector 12 also includes an outer, annular coupling sleeve 70 that fits over the outside of the sleeve body 40. It has an inner shoulder 72 that extends between the shoulder 42 of the sleeve body 40 and an annular face 73 on the nut 60 Thus, the coupling sleeve 70 is axially enclosed on the sleeve body 40, but is free to rotate with respect to the sleeve body 40 to make an external connection with a cooperating coupling or a panel connection, not shown.

For example, grooves 74 on the inner surface of the sleeve, which can accommodate pins (not shown), are common. to form a separable bayonet connection.

The interaction of the pipeline designed

Deten shielding jacket 14 with the sleeve 24 is a weatherproof and electromagnetically shielded connection.

In the embodiment described, electrical conductors are provided, but can also Optical fibers are used.

For this purpose I sheet drawings

Claims (1)

Patent claims: 1. Connector for a multiple conductor, a shielding jacket and a sheath having Electric cable with - A sleeve having two sleeve bodies made of metal; - A union nut connecting the two sleeve bodies; - A conical insulating body made of elastic material, which is inserted into the sleeve, the one has a conical inner surface at its end facing the electric cable; and - Contact elements used in bores in the insulating body, on which the ends of the conductors are connected;