Coupling part for an electrical conductor

Abstract

A coupling part for an electrical line has an insulator having a receiving side and an oppositely lying plug-in side and throughholes, in which are arranged insulated electrical contact elements relative to each other, to which, in the mounted position, the electrical conductors of the line are connected on the receiving side of the insulator. A surrounding prefabricated housing is mounted over the connecting point of the conductors and contact elements, so that on the one side it stretches up to and over the insulator and on the other side up to and over the line.

Claims

1. A coupling part for an electrical line the electrical line having at least two insulated electrical conductor wires and a common jacket, the coupling part comprising: an insulator having a receiving side and an oppositely lying plug-in side and throughholes, in which are arranged insulated electrical contact elements relative to each other, to which, in a mounted position, the electrical conductors of the line are connected on the receiving side of the insulator, wherein a surrounding prefabricated housing composed of insulation material is mounted over a connecting point of the conductors and contact elements, so that on the one side it stretches up to and over the insulator and on the other side up to and over the line, wherein the inner space of the housing, in the area of the line extending into the housing, up until the insulator, is completely filled with a thermoplastic polyamide glue which adheres tightly and moisture-proof on the enclosed wires of the line and the housing of the coupling part, as well as on the jacket of a protruding line in the housing, and which also rests as a type of bulge against the housing, wherein the wires of the line extending into the throughholes of the insulator are each surrounded by a seal which lies tightly to the wires on one side and the walls of the throughholes on the other side.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) An embodiment of the present subject matter is illustrated in the drawings.

(2) The single FIGURE of the drawing shows the coupling part according to the invention in a sectional view.

DETAILED DESCRIPTION

(3) In the drawing a coupling part K, a type of plug connection connected to the end of an electrical line 1, is schematically illustrated. In the illustrated embodiment the electrical line 1 has two wires 2 and 3 that are surrounded by a common jacket 4 composed of insulation material. They are exposed a predetermined length from the jacket 4. Each wire 2 and 3 is comprised of a surrounding insulating electrical conductor. The line 1 can have more than two wires.

(4) Coupling part K is comprised of an insulator 5 composed of stable insulation material such as for example polyamide (PA) or polypropylenterphthalate (PPT) and a housing 6 composed of insulation material such as for example PA, PPT or thermoplastic polyurethane, which on one side protrudes over the line 1 and on the other side to protrudes over the insulator 5 and lies tightly against the same. In the insulator 5, with a corresponding number of wires of the wire 1, two throughholes 7 and 8 are placed in which the contact elements 9 and 10 are arranged. The contact elements 9 and 10 can be used as plug pins or plug sockets. The insulator 5 has a receiving side on which the conductor of the wires 2 and 3 can be connected and a plug side to plug in a complimentary coupling part or counter contacts. Seals 13 and 14 are arranged on the wires 2 and 3, which lie inside the throughholes 7 and 8. They lie tightly against the wires 2 and 3 on one side and against the walls of the throughholes 7 and 8 on the other side.

(5) The coupling part K is manufactured as follows, for example:

(6) The wires 2 and 4 of the line 1 are initially exposed a predetermined length from the jacket 4. Then, the insulation at the end of the wires 2 and 3 is removed. The conductor is then electrically conductively connected with the contact elements 9 and 10 and the contact elements are then arranged in the throughholes 7 and 8 of the insulator 5. Finally, the prepared arrangement is placed around the housing 6, which on one side surrounds the line 1 and on the other side in tight contact with the same until protruding over the insulator 5. The housing 6 can be pushed before the described assembly on the line 1 and finally brought into the position in the illustrated drawing.

(7) Finally, a PA-hot melt is filled in the housing 6, and namely advantageously placed in an injection molding tool. The sealing body 11 obtained as a result completely fills the housing 6 in the area of the entry point of the line 1. It protrudes close or near to the insulator 5 and surrounds the end of the protruding line 1 in the housing. In accordance with the illustrated drawing, a type of bulge 12 is formed which also rests against the housing 6.