WO2019101259A1

WO2019101259A1 - Electrical connecting cable

Info

Publication number: WO2019101259A1
Application number: PCT/DE2018/000348
Authority: WO
Inventors: Markus Ißler
Original assignee: Gentherm Gmbh
Priority date: 2017-11-27
Filing date: 2018-11-26
Publication date: 2019-05-31

Abstract

The invention relates to an electrical connecting cable (10), having a first end (12), a second end (14), which is spaced apart from the first end (12), and a connecting lead (16), which connects the first end (12) and the second end (14) electrically to one another. The connecting lead (16) is assembled from a first section (18) and a second section (20), the first section (18) is associated with the first end (12) of the connecting lead (16), the second section (20) is associated with the second end (14) of the connecting lead (16), and the first section (18) and the second section (20) differ from one another in at least one parameter with regard to their load-bearing capacity.

Description

Electrical connection cable

The invention relates to an electrical connection cable having a first end, a second end spaced from the first end, and a connection line electrically interconnecting the first end and the second end. Furthermore, the invention relates to a lambda probe assembly with a

Lambda probe and a connected to the lambda probe electrical connection cable.

In addition, the invention relates to a method for producing an electrical connection cable, comprising the steps of providing a first section of a connection line and providing a second section of the connection line, wherein the first section and the second section differ from each other in terms of their load capacity in at least one parameter.

So far, electrical connection cables are consistently made of a line material. In particular, in high-temperature applications, this has the consequence that the entire connection cable

high-temperature-resistant lines and a high-temperature-resistant protective tube is finished. These materials are relatively expensive, and their use is only necessary in a proportion of 5 to 20 percent of the total cable length. For the remaining 80 to 95 percent of the connection cable can regularly

Standard temperature materials are used.

In addition, known in the field of probe contacting electrical connection cable can not be made fully automatically. Known connection cables have crimping points, which prevents a fully automatic application of seals and hoses. In known manufacturing processes, the automatic Break manufacturing for manual application of seals and hoses, wherein sections of known electrical connection cables are made manually after the interruption of the automatic manufacturing. The problem underlying the invention is that the

Production of electrical connection cables, which are loaded or claimed differently along their course, to simplify and reduce their production costs.

The object is achieved by an electrical connection cable of the type mentioned, wherein the connecting line is composed of a first portion and a second portion, the first portion is associated with the first end of the connecting line, the second portion is associated with the second end of the connecting line and the first section and the second section differ from each other in at least one parameter with respect to their load capacity.

The invention makes use of the knowledge that

Connecting lines also from different sections, which are each adapted to the expected loads,

can be composed. Thus, the necessity of the

Use of expensive materials or conduit constructions over the entire cable length has been overcome. It comes to a considerable

Cost savings in the production of appropriate electrical connection cable.

The first end may also be referred to as a normal end, wherein the first section may also be referred to as a normal section. The second end may be referred to as a load end, wherein the second portion may also be referred to as a load portion. The load end and / or the load section are preferably more resilient in terms of a parameter than the normal end and / or the normal load. Section. The load end and / or the load section are preferably more resistant than the normal end and / or the normal section.

By separating into two halves, both sides can be prefabricated higher automated. Furthermore, different materials can be used for the two halves. The electric

Connecting cable may be adapted to be used in the region of the second section in a temperature range above 100 degrees Celsius, in particular in an exhaust area.

In particular, the electrical connection cable is set up to be used for connecting a lambda probe or for connecting other sensors or actuators in the high-temperature range.

In a preferred embodiment of the electrical connection cable according to the invention, the first section and the second section are relative to the direction of extension of the connection line

arranged one behind the other. Preferably, the first portion is integrally connected to the second portion. In particular, one or more welded joints are present between the first section and the second section.

The electrical connection cable according to the invention is further developed advantageous in that the first portion of the connecting line and the second portion of the connecting line each having a plurality of electrical conductors, wherein individual electrical conductors of the first portion are integrally connected to individual electrical conductors of the second portion. In particular, the individual electrical conductors of the first section are welded to the individual electrical conductors of the second section. Due to the multiple electrical conductors, the electrical connection cable to

Provision of electrical power use find. Alternatively or additionally, a signal and / or data transmission via one or more electrical conductors can be implemented. In another embodiment of the electrical connection cable, the junctions of the individual electrical conductors of the first section of the connection line and of the second section of the connection line lie along one another along the conductor path

different positions. This arrangement of the joints is avoided that the joints to pronounced

Lead thickening. Thus, a substantially constant line cross section can be implemented along the entire line length. By the spacing of the joints in

In the direction of the connecting line shorts are also avoided because the contact of adjacent electrical conductors is significantly reduced in case of failure of the insulation.

In another embodiment of the electrical connection cable according to the invention, the connection points are electrically insulated from each other by insulation. The insulation can be implemented by shrink tubing or dip paint. The insulation points to the

Connecting points preferably the same diameter and / or the same line contour as in the rest of their course. To the

electrical contact and to be able to ensure the electrical insulation, the connection between the electrical conductors by means of automatic resistance welding can be generated, wherein after the resistance welding preferably a dip painting the

Connecting points takes place.

In addition, an electrical connecting cable according to the invention is preferred, which has a hose, wherein the hose extends along the first portion of the connecting line and the second portion of the connecting line. In particular, all electrical conductors of the first run inside the tube

Section of the connecting line and all electrical conductors of the second section of the connecting line. The hose can

for example, be a shrink tube, which is adaptable by heat input to the contour of the electrical conductors. The electrical connection cable is further developed advantageously in that the first section and the second section differ with respect to their temperature capacity. For example, the first section and the second section differ in terms of their heat resistance and / or in terms of their heat resistance

Refrigeration capacity. In particular, when the electrical connection cable is used in the vicinity of an exhaust pipe, it is advantageous if the first section and the second section with respect to their

Distinguish heat resistance. When used outdoors, such as aircraft or satellites, it can lead to an enormous cold load. In this case, it is advantageous if the first section and the second section differ with regard to their refrigeration capacity. The electrical connection cable can for the

Wiring of lambda probes are used and correspondingly from a high-temperature sub-range and a

Normal temperature sub-range exist, which are manufactured separately and then assembled.

In an alternative embodiment of the invention

electrical connection cable, the first section and the second section differ from each other in their corrosion resistance. This is advantageous if the electrical connection cable is used in a particularly aggressive chemical atmosphere. The corrosion-resistant section of the connection line can then be used in the environment of corrosive liquids or gases. This allows in particular the use of the

Connecting cable in the environment or within saline, sulfuric acid or chlorine-containing liquids or

Gas mixtures.

In another embodiment of the electrical connection cable according to the invention, the first section and the second section differ from each other in their abrasion resistance. Thus, the electrical connection cable in media with abrasive Effect can be used. Corresponding media are for example airborne air flows or water flows with hard particles.

The electrical connection cable according to the invention is further developed advantageous in that the first portion of the connecting line one or more electrical conductors made of copper or a

Copper alloy, a connector and / or a conductor insulation has. The electrical conductors may be, for example, conductor strands. The one or more electrical conductors, the connector and / or the conductor insulation are implemented as inexpensively as possible. The conductor insulation may have an insulation layer which is partially or completely formed from an adhesive or a lacquer, in particular a dip paint. The paint can be a high-viscosity paint. Furthermore, the insulating layer may be formed from or with a corrugated tube, fabric and / or PVC. Alternatively, the conductor insulation may be formed in the first section of the ethylene-propylene-diene rubber (EPDM) connecting line, rubber or rubber pack.

In addition, an electrical connection cable according to the invention is preferred in which the second section of the connection line has one or more electrical conductors made of copper or a copper alloy. Preferably, the copper or copper alloy of the one or more electrical conductors of the second section is

Connecting line heat-protected or heat resistant formed.

In addition, an inventive electrical connection cable is advantageous in which the copper of the one or more electrical conductors of the second portion of the connecting line is nickel-plated, tinned or silvered. Nickel plating, tin plating or silver plating results in effective heat protection so that the second section of the connecting pipe can be used in high temperature areas, for example in exhaust gas applications. In addition, an inventive electrical connection cable is preferred in which the second portion of the connecting line has at least one connector and / or a conductor insulation. In particular, the connector and / or the conductor insulation is formed heat-protected. The connector and / or the

Conductor insulation are preferably formed of a heat-resistant plastic.

In a further embodiment of the electrical connection cable according to the invention, the conductor insulation of the second section of the connection line has an insulation layer which consists of

Polytetrafluoroethylene or glass silk is formed with silicone or has polytetrafluoroethylene or glass silk with silicone. By a polytetrafluoroethylene insulation layer (PTFE insulation layer) or a glass silk insulation layer high heat resistance of the second section can be achieved. Thus, the second portion of the connection line in areas with a comparatively high

Ambient temperature can be used.

In an alternative embodiment of the invention

electrical connection cable, the second section of the

Connecting line one or more electrical conductors, which have a higher resistance to fluorine, as the one or more electrical conductors of the first portion of

Link. Due to the higher resistance to fluorine in the second section of the connecting line a PTFE conductor insulation can be used. The fluorine constituents of the PTFE conductor insulation thus do not lead to damage to the electrical conductors of the second section of the connecting line.

In another embodiment of the electrical connection cable according to the invention, the second section of the connection line has one or more electrical conductors which have coated filaments. The coating of filaments is an increased Resilience of the second section of the connecting line implemented. For example, the coating increases the heat resistance of the second section of the connecting line.

In an alternative embodiment of the invention

electrical connection cable deviates the cross section of the one or more electrical conductors of the first portion of

Connecting line from the cross section of the one or more electrical conductors of the second portion of the connecting line. Thus, the cross section of the one or more electrical conductors of the first portion of the connection line is different from the cross section of the one or more electrical conductors of the second portion of the connection line. One or more

Electrical conductors of the second portion of the connecting line are preferably formed thicker or thinner than the one or more electrical conductors of the first portion of the connecting line. Thus, the one or more electrical conductors of the second portion of the connection line may have a larger or smaller cross section than the one or more electrical conductors of the first portion of the connection line. Due to the cross-sectional difference, there is a significant cost savings due to the reduced amount of necessary material. Further, the cross-sections of the one or more electrical conductors of the first portion of the connection line may differ in cross-sectional area and / or cross-sectional shape from the cross-sections of the one or more electrical conductors of the second portion of the connection line. Preferably, the one or more electrical conductors of the first section of the

Connecting line has a different diameter than the one or more electrical conductors of the second portion of

Connection line on. Due to the different cross sections, the total resistance can also be reduced. This is especially true when the electrical conductors are used as signal conductors. Moreover, an electrical connection cable according to the invention is preferred in which the one or more electrical conductors of the first section of the connection line and / or the one or more electrical conductors of the second section of the

Connecting line in a transition area each with

Contact elements are connected and the first section of the

Connecting line and / or the second portion of the connecting line each having a seal, which preferably seals all electrical conductors of the respective section in the transition region. About the contact elements of the connection of the electrical

Connecting cable. Thus, the contact elements carry the contact poles which are to be brought into contact with other contact poles in order to produce an electrically conductive connection.

In addition, an inventive electrical connection cable is preferred in which the conductor insulation of the first portion of the connecting line and / or the conductor insulation of the second portion of the connecting line is encapsulated with a seal.

The problem underlying the invention is further achieved by a lambda probe assembly of the type mentioned, wherein the electrical connection cable of the invention

Lambda probe assembly according to one of the embodiments described above is formed. Regarding the benefits and

Modifications of the lambda probe assembly according to the invention is first of all to the advantages and modifications of the electrical

Referenced connection cable.

Other fields of application of the electrical connection cable are all probes, sensors and / or actuators, in which only partially or partially higher temperature resistant materials are needed. In the corresponding applications of the connection cable it can

For example, give a Durchführungsstelle, where the

Connecting cable passes through a demarcation of two rooms, for example, between the engine compartment and the vehicle cabin or between the vehicle outer skin and vehicle interior. Appropriate

Vehicles may be, for example, aircraft or submarines.

The problem underlying the invention is further by a

Solved method of the type mentioned, wherein the

The method according to the invention comprises the integral connection of the first section of the connecting line and of the second section of the connecting line.

The first section of the connecting line and the second section of the connecting line preferably have one or more electrical conductors, wherein individual electrical conductors of the first section are positively connected to individual electrical conductors of the second section. The cohesive bonding is preferably carried out by welding, preferably by means of ultrasonic welding,

Friction welding or laser. The integral connection preferably takes place via an automated process. It ultimately creates a kit, consisting of a first always identical

Cable section and in length, material, attachments, plug type and other features individually manufacturable second cable section. When the connection cable is used to connect a probe, one cable section is on the probe side and another cable section is on the connector side.

In a preferred embodiment of the invention

Method is carried out electrically insulating connection points of individual electrical conductors of the first portion of the connecting line and the second portion of the connecting line. Alternatively or additionally, a hose is applied along the first section of the connecting line and of the second section of the connecting line. Hereinafter, preferred embodiments of the invention will be described and described with reference to the accompanying drawings. Showing:

Fig. 1 shows an embodiment of the electrical according to the invention

Connecting cable during manufacture in a schematic representation;

FIG. 2 is a schematic representation of the electrical connection cable shown in FIG. 1 in an advanced state of manufacture; FIG. FIG. 3 is a schematic representation of the electrical connection cable shown in FIG. 2 in an advanced manufacturing state; FIG.

FIG. 4 is a schematic representation of the electrical connection cable shown in FIG. 3 in an advanced state of manufacture; FIG.

Fig. 5 at the electrical connection cable shown in FIG. 4 at

Completion of the manufacturing process in a schematic representation; and

Fig. 6 is a junction of electrical conductors of a

inventive electrical connection cable.

Fig. 1 shows an electrical connection cable 10 during manufacture. The electrical connection cable 10 has a first end 12 and a second end 14, the first end 12 being spaced from the second end 14. The first end 12 is associated with a first portion 18 of a connecting line 16. The second end 14 is associated with a second portion 20 of the connecting line 16. For producing an electrically conductive connection between the first end 12 and the second At the end 14, the first section 18 and the second section 20 are to be connected to form a continuous connection line 16.

The first section 18 has a plurality of, namely four, electrical conductors 22a-22d. The second section 20 also has several, namely four, electrical conductors 24a-24d. The first section 18 and the second section 20 differ from each other in their temperature resistance and corrosion resistance. The second section 20 has a higher heat resistance and a higher

Corrosion resistance than the first section 18 on. This is achieved inter alia by the fact that the electrical conductors 24a-24d of the second section 20 have a different conductor insulation than the electrical conductors 22a-22d of the first section 18. With regard to this feature, reference is made to FIG.

The electrical conductors 22a-22d of the first section 18 are at their end facing away from the second section 20 each with a

Contact element 32 electrically conductively connected. The contact elements 32 are fixed within a housing 38, wherein the housing 38 is formed of plastic. In a the electrical conductors 22a-22d end facing end portion of the housing 38, a seal 40a is arranged, which the electrical conductors 22a-22d relative to the

Housing 38 seals.

The electrical conductors 24a-24d are also electrically conductively connected on their side facing away from the first section 18 with contact elements 34. The contact elements 34 project into a sleeve 36. FIG. 2 shows that a tube 30 has been pushed onto the first section 18, the tube 30 being longer than the tube

electrical conductor 22a-22d of the first section 18. For this reason, in the illustrated state, a wrinkling in a region of the tube 30 results. On the electrical conductors 24a-24d of the second portion 20, a seal 40b is pushed, which is adapted to seal the electrical conductors 24a-24d relative to the sleeve 36.

The state shown in FIG. 3 results from a

cohesively connecting the individual electrical conductors 22a-22d of the first portion 18 with the individual electrical conductors 24a-24d of the second portion 20 of the connecting line 16. In the present case, the individual electrical conductors 22a-22d, 24a-24d of the first portion 18 and the second portion 20 of the connecting line 16 welded together. As a result, connection points 26a-26d have been produced between the electrical conductors 22a-22d, 24a-24d of the first section 18 and of the second section 20 of the connection line 16. The connection points 26a-26d lie along the conductor path on mutually different positions, so that conspicuous thickenings, which are formed by a plurality of connection points 26a-26d, are avoided. The positional deviations of the connection points 26a-26d can be achieved by the electrical conductors 22a-22d of the first section 18 having different lengths. Furthermore, the electrical conductors 24a-24d of the second section 20 have different lengths. The resulting pairs of conductors, each comprising an electrical conductor 22a-22d of the first portion 18 and an electrical conductor 24a-24d of the second portion 20, have substantially matching overall lengths.

Further, the electrical conductors 22a-22d are formed of a different material than the electrical conductors 24a-24d. The electrical conductors 22a-22d are formed of a low-cost copper material, wherein the electrical conductors 24a-24d are formed of a heat-resistant copper material. The copper of the electrical conductors 24a-24d of the second section 20 of the connecting line 16 is nickel-plated. Alternatively or additionally, the copper of the electrical conductors 24a-24d of the second portion 20 of the connecting line 16 may also be tinned or silvered. Furthermore, the electrical conductors 22a-22d differ in their cross section from the electrical conductors 24a-24d. The electrical conductors 22a-22d, 24a-24d of the first section 18 and the second

Section 20 of the connecting line 16 have a substantially circular cross-section, wherein the electrical conductors 24a-24d have a larger diameter than the electrical conductors 22a-22d.

4 shows that an insulation 28a-28d has now been produced in the region of the connection points 26a-26d, wherein the insulation 28a-28d electrically isolates the connection points 26a-26d from one another. The

Isolation 28a-28d can be implemented for example by heat shrink tubing or dip paint. The insulations 28a-28d respectively connect the conductor insulation of the first portion 18 with the conductor insulation of the second portion 20 of the connection line 16. Thus, a continuous conductor insulation is realized, which extends over the

Connecting points 26a-26d extends away.

FIG. 5 shows that after the insulation of the connection points 26a-26d, the tube 30 is moved over the connection points 26a-26d, so that the tube 30 unfolds. The tube 30 thus extends along the first section 18 and the second section 20 of the connecting line 16.

The illustrated electrical connection cable 10 can be used, for example, in a lambda probe assembly, within which a lambda probe is connected by means of the electrical connection cable 10 to a vehicle electronics. In this case, the second portion 20 of the connecting line 16 can be arranged due to the heat resistance within the exhaust gas or in the immediate vicinity of the exhaust gas flow, without damaging the electrical

Connecting cable 10 is expected. Alternatively, the electrical connection cable 10 can also be used to connect other probes, sensors or actuators, in which partially

high temperature resistant materials are needed. FIG. 6 shows a connection point 26 of a first electrical conductor 22 and a second electrical conductor 24. The electrical conductor 22 has a conductor insulation 42. The conductor insulation 42 has an insulating layer of PVC. The conductor insulation 44 has an insulating layer of polytetrafluoroethylene (PTFE). PTFE insulations are extremely heat-resistant and allow the placement of this line region within an exhaust stream or in the immediate vicinity of an exhaust stream of a vehicle. Alternatively or additionally, the conductor insulation 44 may also comprise an insulating layer of glass silk, wherein the glass silk may additionally comprise silicone.

In the region of the junction 26 insulation material 28 is arranged. The insulating material 28 may be applied in such a way, for example, be sprayed that no in the region of the junction

Circumference change compared to the conductor insulation 42, 44 results. The insulation 28 may further be covered with a further insulation layer 29, wherein the insulation layer 29 may be a shrink tube or a dip. The insulating layers 28, 29 may be formed at least partially of ethylene-propylene-diene rubber, rubber or a rubber replenisher.

reference numeral

10 connection cable

12 first end

14 second end

16 connection line

18 first section

20 second section

22, 22a-22d electrical conductors

24, 24a-24d electrical conductors

26, 26a-26d connection points

28, 29, 28a-28d isolation

30 hose

32, 34 contact elements

36 sleeve

38 housing

40a, 40b seals

42 conductor insulation

44 conductor insulation

Claims

claims

Electrical connection cable (10), with

a first end (12),

a second end (14) spaced from the first end (12), and

a connecting line (16) electrically connecting the first end (12) and the second end (14), characterized in that the connecting line (16) is assembled from a first section (18) and a second section (20), wherein the first portion (18) is associated with the first end (12) of the connection line (16), the second portion (20) is associated with the second end (14) of the connection line (16), and the first portion (18) and second section (20) in at least one parameter with respect to their capacity differ from each other.

Electrical connection cable (10) according to one of the preceding claims,

characterized in that the first portion (18) and the second portion (20) relative to the direction of the

Connecting line (16) are arranged one behind the other.

Electrical connection cable (10) according to one of the preceding claims,

characterized in that the first portion (18) of the

Connecting line (16) and the second section (20) of the

Connecting line (16) each have a plurality of electrical conductors (22, 22a-22d, 24, 24a-24d), wherein individual electrical conductors (22, 22a-22d) of the first portion (18) with individual electrical conductors (24, 24a-24d ) of the second portion (20) are materially connected.

4. An electrical connection cable (10) according to claim 3,

characterized in that the connection points (26, 26a-26d) of the individual electrical conductors (22, 22a-22d, 24, 24a-24d) of the first portion (18) of the connecting line (16) and the second portion (20) of the connecting line (16) along the

Ladder course lie on different positions.

5. An electrical connection cable (10) according to claim 3 or 4,

characterized in that the connection points (26, 26a-26d) by insulation (28, 29, 28a-28d) are electrically isolated from each other.

6. An electrical connection cable (10) according to any one of the preceding claims,

characterized by a hose (30) extending along the first portion (18) of the connecting conduit (16) and the second portion (20) of the connecting conduit (16).

7. Electrical connection cable (10) according to one of the preceding claims,

characterized in that the first portion (18) and the second portion (20) differ from each other in terms of their temperature capacity. 8. Electrical connection cable (10) according to one of the preceding

Claims,

characterized in that the first portion (18) and the second portion (20) differ from each other in corrosion resistance.

9. An electrical connection cable (10) according to any one of the preceding claims, characterized in that the first portion (18) and the second portion (20) differ from each other in their abrasion resistance.

10. Electrical connection cable (10) according to one of the preceding claims,

characterized in that the first portion (18) of the

Connecting line (16) one or more electrical conductors (22, 22a-22d) made of copper or a copper alloy, a

Connector and / or a conductor insulation (42).

11. An electrical connection cable (10) according to any one of the preceding claims,

characterized in that the second section (20) of

Connecting line (16) one or more electrical conductors (24, 24a-24d) made of copper or a copper alloy.

12. An electrical connection cable (10) according to claim 11,

characterized in that the copper of the one or more electrical conductors (24, 24a-24d) of the second portion (20) of the connecting lead (16) is nickel plated, tinned or silver plated.

13. Electrical connection cable (10) according to one of the preceding claims,

characterized in that the second section (20) of

Connecting line (16) has at least one connector and / or a conductor insulation (44).

14. An electrical connection cable (10) according to claim 13,

characterized in that the conductor insulation (44) of the second portion (20) of the connecting line (16) a Insulation layer of or with polytetrafluoroethylene or glass silk with silicone.

15. An electrical connection cable (10) according to any one of the preceding claims,

characterized in that the second section of the

Connecting line (16) one or more electrical conductors (24, 24a-24d) having a higher resistance to fluorine, as the one or more electrical conductors (22, 22a-22d) of the first portion (18) of the connecting line ( 16).

16. An electrical connection cable (10) according to any one of the preceding claims,

characterized in that the second portion (20) of the connection line (16) comprises one or more electrical conductors (24, 24a-24d) having coated filaments.

17. Electrical connection cable (10) according to one of the preceding claims,

characterized in that the cross section of the one or more electrical conductors (22, 22a-22d) of the first portion (18) of the connection line (16) is of the cross section of the one or more electrical conductors (24, 24a-24d) of the second Section (20) of the connecting line (16) differs.

18. An electrical connection cable (10) according to any one of the preceding claims,

characterized in that the one or more electrical conductors (22, 22a-22d) of the first portion (18) of the connection line (16) and / or the one or more electrical conductors (24, 24a-24d) of the second portion ( 20) of the connecting line (16) in a transition region in each case with Contact elements (32, 34) are connected and the first portion (18) of the connecting line (16) and / or the second portion (20) of the connecting line (16) each have a seal (40a, 40b), which preferably all electrical conductors ( 22, 22a-22d, 24, 24a-24d) of the respective section (18, 20) in the transition region seals.

19. An electrical connection cable (10) according to claim 18,

characterized in that the conductor insulation (42) of the first portion (18) of the connecting line (16) and / or the

Conductor insulation (44) of the second section (20) of

Connecting line (16) is encapsulated with a seal.

20. Lambda probe assembly, with

a lambda probe; and

an electrical connection cable (10) connected to the lambda probe;

characterized in that the electrical connection cable (10) is designed according to one of the preceding claims.

21. A method for producing an electrical connection cable (10), in particular an electrical connection cable (10) according to any one of the preceding claims, comprising the steps:

Providing a first portion (18) of a

Connecting line (16); and

Providing a second section (20) of

Connecting line (16);

wherein the first portion (18) and the second portion (20) differ in at least one parameter with respect to their load capacity;

characterized by the step: cohesively connecting the first portion (18) of the connecting line (16) and the second portion (20) of the connecting line (16). 22. The method according to claim 21,

characterized by at least one of electrically isolating junctions (26, 26a-26d) of individual electrical conductors (22, 22a-22d, 24, 24a-24d) of the first portion (18) of the connection line (16) and the second portion (20) the connection line (16);

Applying a hose (30) along the first portion (18) of the connecting pipe (16) and the second portion (20) of the connecting pipe (16).