Cable harness with electrical cable in metallic tube and manufacturing process for it

Abstract

A wiring harness (100) installed in a vehicle (20), comprising: an electrical cable (16) and a metallic tube (10) into which the electrical cable (16) is inserted, wherein the metallic tube (10) has a stiffness that enables it to maintain its shape after bending, and the metallic tube (10) is bent with the electrical cable (16) inserted therein, such that the metallic tube (10) is formed in a shape corresponding to a pipe (1) to be attached to the vehicle body (21), characterized in that the pipe (1) is filled with brake fluid, wherein the electrical cable (16) is electrically connected to a power control unit (23) and a battery (22), wherein the pipe (1) extends from a master cylinder (2) and is connected to a brake caliper (3), and hydraulic pressure is exerted on each brake caliper (3) by the brake fluid when the driver operates the brake.

Description

Technical field

[0001] The present invention relates to a cable harness and a manufacturing method for it. Technical background

[0002] Typically, a wiring harness has been proposed that uses electrical cables (so-called electrical shielding cables) provided by a shielding component with a shielding function that has the function of shielding electromagnetic noise and the like in order to connect various devices (a battery, an inverter, a motor, etc.) that make up an electric driving system of a hybrid vehicle, an electric vehicle or the like (see, for example, patent document 1).

[0003] Patent Document 1: JP-A-2004-171952 A PRESENTATION OF THE INVENTION

[0004] The wiring harness described above is routed within the vehicle body by being attached at several points using brackets or similar devices, with multiple electrical cables housed in metal conduits. This routing process is time-consuming, making improvements to ease of installation desirable.

[0005] The present invention is made in view of the above-mentioned circumstances and one objective of it is to provide a cable harness that is excellent in terms of ease of installation and its manufacturing method.

[0006] To solve the problem described above, a cable harness according to the present invention is characterized by the following (1) to (3): (1) A wiring harness installed in a vehicle body, equipped with: an electrical cable and a metallic pipe into which the electrical cable is inserted, wherein the tube has a stiffness that allows it to maintain its shape after bending and The pipe with the electrical cable inserted inside is bent so that the pipe is shaped in a form that corresponds to a pipe to be attached to the vehicle body. (2) Wiring harness according to (1), furthermore provided with the pipeline, wherein the pipe into which the electrical cable is inserted is arranged along the pipeline and the pipeline and the pipe are jointly fixed by a fastening component at a distance in a longitudinal direction of the pipe, so that they are integrated. (3) Wiring harness according to (1) or (2), furthermore, it is provided with a connecting component that has conductivity and attaches the pipe to a conductive section of the vehicle body.

[0007] According to the wiring harness of the above structure ( 1The pipe can be easily integrated while being positioned along the pipeline attached to the vehicle body. By attaching the pipeline to the vehicle body with the integrated pipe, routing within the vehicle body is simplified.

[0008] Furthermore, because the pipe is bent and shaped to match the pipeline and retains its shape on its own, it can be attached to the pipeline with fewer fastening points, thus reducing the number of fastening components to lower costs and improve fixability.

[0009] Furthermore, the stiffness of the pipeline can be reduced, since the pipe has a high stiffness that allows it to self-maintain its shape after bending, thus keeping the cost of the pipeline low.

[0010] Furthermore, since the electrical cable is covered by the metallic tube, a suitable shielding function can be provided for the electrical cable. In particular, the electrical cable can be protected from external influences such as flying pebbles or the like when it is laid under the vehicle floor, while the electromagnetic noise emitted by the electrical cable is shielded.

[0011] According to the wiring harness of the above structure ( 2 Since the pipe containing the electrical cable is attached to the conduit via the mounting component, thus integrating it, the wiring harness can be installed simultaneously with the conduit on the vehicle body. As a result, the ease of routing the wiring harness is significantly improved.

[0012] According to the above structure ( 3By attaching the tube to the conductive section of the vehicle, the electromagnetic noise shielded by the tube can be dissipated through the binding component, after passing through the tube itself, towards the conductive section of the vehicle body. Therefore, it is not necessary, for example, to include a connector or similar component with a dedicated mechanism for dissipating the electromagnetic noise (a grounding / shielding mechanism). Consequently, the number of wiring harness components can be reduced, thus lowering costs and simplifying harness manufacturing.

[0013] Furthermore, the cable harness manufacturing process according to the present invention is characterized by the following ( 4 ) marked to achieve the above-mentioned goal: (4) A manufacturing process for a wiring harness installed in a vehicle body, comprising: Bending a metallic tube into which an electrical cable is inserted, in order to shape the tube into a form corresponding to a pipeline that is attached to the vehicle body; Arranging the curved pipe along the pipeline before it is attached to the vehicle body, and The joint fastening of the pipeline and the pipe by a fastening component at a distance in a longitudinal direction of the pipe, so that they are integrated.

[0014] According to the cable harness manufacturing process of the above structure ( 4 ) a cable harness can be achieved which, by covering the electrical cable with the metallic tube, has a shielding function and can be easily installed in the vehicle.

[0015] According to the present invention, a cable harness can be provided which is excellent in terms of its ease of installation and its manufacturing process.

[0016] The present invention has been briefly described. Further details of the present invention will be explained by reading through the method of carrying out the invention (hereinafter referred to as the "embodiment"), which is described below with reference to the attached drawings. List of characters Fig. 1A and Fig. Figure 1B shows schematic views illustrating an example in which a wiring harness according to the embodiment of the present invention is applied to a vehicle. Fig. Figure 1A is a schematic view of the vehicle of the present example as seen from one side and Fig. Figure 1B is a schematic view of the vehicle of the present example as seen from above. Fig. Figure 2 is a perspective view of the wiring harness according to the present embodiment. Fig. Figure 3 is a schematic perspective view of an electrical cable and a shielding tube used for the wiring harness. Fig. 4A and Fig. 4B are views that explain a fastening structure of the cable harness by means of a binding component. Fig. 4A is a perspective view of a fastening position and Fig. 4B is an AA cross-sectional view of Fig. 4A. Fig. 5A to Fig. 5D are views that explain a manufacturing process for the cable harness according to the present embodiment and Fig. 5A to Fig. 5D images are schematic perspective views of steps. Fig. Figure 6 is a perspective view of a wiring harness according to a reference example. DETAILED DESCRIPTION OF THE EXECUTION FORMS

[0017] An example of an embodiment according to the present invention is described below with reference to the drawings.

[0018] Fig. 1A and Fig. Figure 1B shows a state in which a wiring harness (hereinafter referred to as "wiring harness") 100 ““ designated) according to the embodiment of the present invention in a hybrid vehicle 20 relocated. In the following, the hybrid vehicle will also be referred to only as "vehicle". 20 " designated.

[0019] The vehicle 20 is as in Fig. 1A and Fig. 1B shown, with a battery 22 , located in the rear section of a vehicle body 21 is arranged, a power control unit 23 , located in a front part of the vehicle body 21 is arranged, a generator motor ( MG ) 24 and an internal combustion engine 25 provided.

[0020] The battery 22and the power control unit 23 are connected in such a way that power is transferred from an electrical cable (an electrical cable described later). 16 , see Fig. 3) can be provided and received, which is in a shielding tube (pipe) 10 has been introduced. In other words: The battery 22 and the power control unit 23 are through an electrical conduit that passes through the shielding tube 10 runs, connected.

[0021] The vehicle 20 has a metallic brake pipe (pipeline) 1 on, which extend from a main cylinder 2 extends. The brake line 1 is in the front-to-rear direction of the vehicle 20 on the vehicle body 21 attached and fitted with a brake caliper 3 the disc brake, which is on each wheel 4 of the vehicle 20 is intended to be connected. The brake line 1is filled with brake fluid and fitted to each brake caliper 3 Hydraulic pressure is exerted by the brake fluid when the driver applies the brakes. This causes the wheels to rotate. 4 braked. The brake line 1 is on the vehicle body 21 attached so that a middle section of it is located under the floor of the vehicle body 21 runs and the shielding tube 10 is in the vehicle 20 relocated while it was with this brake line 1 is integrated.

[0022] Fig. Figure 2 is a perspective view of the wiring harness according to the present embodiment. As shown in Fig. 2 shown, the wiring harness 100 according to the present invention two pipes of the brake pipe 1 on, through which the brake fluid runs and two shielding tubes 10 , each of which has an electrical cable running through it.

[0023] The two pipes of the brake line1 and the two shielding tubes 10 are each laid out parallel to each other. The brake pipe 1 It has a three-dimensional shape with curved sections in several places. 1A exhibits, so that they run along the vehicle body 21 is. The shielding tubes 10 Each has a three-dimensional shape that includes curved sections. 10A at the same positions as the curved sections 1A the brake line 1 exhibit this. As a result, the shielding tubes are 10 formed in a shape that corresponds to the brake pipe 1 , which has a three-dimensional shape.

[0024] The brake line 1 and the shielding tubes 10 , which run along this brake line 1 are set, are jointly secured by fastening components 40 , such as several clamps or clips, are attached. The fastening components40 are located at several positions at intervals along the length of the brake pipe 1 and the shielding tubes 10 attached. This secures the wiring harness. 100 through the brake line 1 and the shielding tubes that pass through the mounting components 40 are integrated, built up.

[0025] Fig. Figure 3 is a schematic perspective view of the electrical cable and shielding tube used for the wiring harness. Fig. 4A and Fig. 4B are views that illustrate the fastening structure of the cable harness by means of a binding component; Fig. 4A is a perspective view of a fastening position and Fig. 4B is an AA cross-sectional view of Fig. 4A.

[0026] As in Fig. Shown in section 3 is the shielding tube. 10 a metallic tube that has a tubular shape into which the electrical cable 16It may have been introduced. The electrical cable 16 is inside (hollow section) of the shielding tube 10 introduced the electrical cable 16 has several ladders 16a and an insulator 16b up, who climbed the ladder 16a covers. This shielding tube 10 It has a stiffness that allows it to maintain its shape after bending.

[0027] The metallic material that makes up the shielding tube 10 The materials used are not particularly limited, and aluminum, an aluminum alloy, stainless steel, or similar materials can be used. Weight reduction can be achieved by using aluminum or an aluminum alloy for the shielding tube. 10 This can be achieved by using stainless steel for the shielding tube. 10 The electromagnetic shielding effect can be improved due to the level of permeability, and furthermore, corrosion resistance can be improved.

[0028] As in Fig. 4A and Fig. As shown in 4B, inside (hollow section) is each of the two shielding tubes 10 an electrical cable 16 introduced. In other words: The two shielding tubes 10 are designed so that they correspond one-to-one to the two electrical cables 16 correspond. Because the electrical cables 16 as described above, each into a shielding tube 10 The two electrical cables have been introduced. 16 They are so well insulated that they do not come into contact with each other. For this reason, heat cannot affect the electrical cables. 16 be suppressed. The number of electrical cables 16 and the shielding tubes 10 , which the wiring harness 100 The number of wires in the wiring harness is not necessarily two; it can be three or more, depending on the circuit configuration. 100 .

[0029] The two shielding tubes 10are attached to an object to be grounded (conductive section) E of the vehicle body 21 attached while being held in place by a connecting component 15 The components, which exhibit conductivity and are positioned at a predetermined location, are bundled together. The connecting component 15 It functions as a grounding component to dissipate electromagnetic noise to the outside, which is emitted by the shielding tubes. 10 is shielded. The connecting component, in particular, has 15 a shape that attaches to the two shielding tubes 10 and the object to be grounded E of the vehicle body 21 initiates by the connecting component 15 together with the two shielding tubes 10 through bolt B on the object to be grounded E Once secured, grounding can be safely carried out, while the two shielding tubes 10 are bundled.

[0030] Since the shielding tubes 10are made entirely of one metal, so grounding can be achieved not only at the Fig. The procedure is not performed at the position shown in point 2, but at an arbitrary position.

[0031] Next, the manufacturing process of the wiring harness will be described. 100 the structure described above. Fig. 5A to Fig. 5D are views that illustrate the manufacturing process of the cable harness according to the present invention, and Fig. 5A and Fig. 5D images are schematic perspective views of steps.

[0032] As in Fig. As shown in 5A, two straight shielding tubes are used. 10 , into which the electrical cables 16 be brought in, prepared in advance.

[0033] As in Fig. As shown in 5B, the two shielding tubes are 10 , which are arranged parallel to each other, shaped into a form that corresponds to the brake pipe 1 , which are attached to the vehicle 20is appropriate, in particular the shielding tubes. 10 bent at predetermined positions to form the curved sections 10A to train them and thereby shape them into a three-dimensional form that runs along the brake pipe 1 can be set.

[0034] As a method for shaping the shielding tubes 10 , which are the curved sections 10A For example, a mechanical forming process can be used, in which straight metallic tubes are bent using a bender or similar device. Furthermore, the shielding tubes can 10 are formed by a process in which a straight metallic tube is placed inside a mold, which is a mold that forms the curved sections. 10A corresponds, is attached and the curved sections 10AThey are formed by applying a fluid pressure from inside (hollow section) of the tube in the direction of the mold (so-called hydraulic forming process).

[0035] As in Fig. As shown in 5C, the shielding tubes are 10 , which in the three-dimensional form that of the brake pipe 1 corresponds to being shaped along the previously existing three-dimensional form, which includes the curved sections. 1A as in Fig. 5D shows a shaped brake pipe. 1 set and positioned.

[0036] Then the brake lines will be 1 and the shielding tubes 10 together through several fastening components 40 attached so that they extend from the brake line 1 and the shielding tubes 10 trained wiring harness 100 be integrated (see Fig. 2).

[0037] Next, a wiring harness will be described according to a reference example. Fig. Figure 6 is a perspective view of a cable harness according to the reference example.

[0038] As in Fig. 6 shown are in the wiring harness 50 according to the reference example, the electrical cables 16 in exterior components 60 introduced, which are made of a synthetic plastic such as polyamide (PA) or polypropylene (PP). In this wiring harness 50 This is because the stiffness of the external components 60 Because it is small, it is difficult to maintain the three-dimensional shape. For this reason, it is in this wiring harness 50 necessary to protect the area around each curved section through the fastening component 40 to fasten, so the costs increase due to the increased number of parts, and fastening work also takes time. Furthermore, in the reference example, electrical cables are used. 16For example, shielded electrical cables are used which have braided wires that cover the external environment to provide the shielding function, and furthermore, grounding is ensured by a connector or the like at the end section.

[0039] According to the wiring harness 100 the present invention can, since the shielding tubes 10 , which possess the rigidity to allow the self-maintenance of the shape after bending, with the electrical cables inserted therein 16 be bent and into a shape that fits the brake pipe 1 corresponds to the one on the vehicle body 21 which is attached, are shaped, these simply along the brake pipe 1 to be integrated. By adopting the structure that is associated with the brake line. 1 The integrated wiring harness will be laid. 100 simultaneously with the assembly of the brake pipe 1 of the vehicle body 21Completed. As a consequence, the routing of the wiring harness can be determined. 100 significantly improved.

[0040] Furthermore, since the shielding tubes 10 in the form that the brake pipe 1 corresponding, bent and formed and maintain their shape, these with fewer fastening positions on the brake pipe 1 to be fastened, so that the number of fastening components 40 This can be reduced to lower costs and improve the machinability of the fastening.

[0041] Furthermore, since the shielding tubes 10 exhibiting high stiffness, enabling self-maintenance of the shape after bending, the stiffness of the brake pipe 1 to reduce the cost of the brake piping 1 can be kept low.

[0042] Furthermore, since the electrical cables 16with the metallic shielding tubes 10 are covered, the electrical cables 16 They can be provided with suitable shielding. Electrical cables, in particular, can be used. 16 be protected from external influences due to flying pebbles or the like, when the electrical cables 16 under the floor of the vehicle 20 are laid, while that is done by the electrical cables 16 The emitted electromagnetic noise is shielded.

[0043] Furthermore, this can be done by the shielding tubes. 10 shielded electromagnetic noise by attaching the shielding tubes 10 at the object E to be grounded, which is connected by the connecting component 15 , which exhibits conductivity, from a conductive section of the vehicle body 21 is designed to connect to the object E of the vehicle body to be grounded via the connecting component 15 be diverted after passing through the shielding tubes 10has been conducted itself. Therefore, for example, it is not necessary to provide the connector or similar with a dedicated grounding / shielding mechanism for dissipating electromagnetic noise. As a consequence, the number of components in the wiring harness can be reduced. 100 This can be reduced so that costs can be reduced while manufacturing the wiring harness. 100 It is simplified.

[0044] Furthermore, according to the manufacturing process of the cable harness 100 of the present invention the metallic shielding tubes 10 , into which the electrical conduits 16 are inserted, bent and shaped into the form that is attached to the vehicle body 21 attached brake line 1 corresponds, shaped, the curved shielding tubes 10 are along the brake line 1 set before they are attached to the vehicle body 21 to be attached and the brake line 1and the shielding tubes 10 are through the fastening components 40 They are attached together at intervals along their length in order to be integrated. This makes the electrical conduits... 16 with the metallic shielding tubes 10 covered to provide the shielding function and furthermore a wiring harness 100 achieved, simply in the vehicle 20 can be relocated.

[0045] The present invention is not limited to the embodiment described above, and modifications, improvements, and the like are possible where appropriate. Furthermore, the materials, shapes, dimensions, numbers, arrangement positions, and the like of the elements of the embodiment described above are arbitrary and not limited, as long as the present invention is achieved.

[0046] For example, the pipes along which the shielding tubes are placed are not on the brake pipe.1 limited, but can also be pipes that carry cooling water or the like.

[0047] Furthermore, the pipes along which the shielding tubes run can 10 They should be made of low-rigidity plastic instead of metal, since the shielding tubes 10 even exhibit high stiffness.

[0048] Next, features of the embodiment of the cable harness described above and its manufacturing method according to the present invention are briefly summarized and listed in the following [1] to [4]: [1] A vehicle body ( 21 ) relocated wiring harness ( 100 ), including: an electrical cable ( 16 ) and a metallic tube (shielding tube) 10 ), into which the electrical conduit is inserted, where the pipe (shielding pipe) 10) exhibits a stiffness that allows it to self-maintain a shape after bending and the pipe with the electrical cable ( 16 ), which is inserted therein, is bent so that the pipe is formed in a shape similar to a pipe to be attached to the vehicle body (brake pipe). 1 ) corresponds. [2] Wiring harness according to [1], furthermore provided with the pipeline (brake pipeline) 1 ), where the pipe (shielding pipe) 10 ), into which the electrical cable ( 16 ) is inserted along the pipeline (brake pipeline) 1 ) is set and the pipeline (brake pipeline) 1 ) and the pipe (shielding pipe) 10 ) together through a fastening component ( 40 ) are attached at a distance in a longitudinal direction of the pipe, so that they are integrated. [3] Wiring harness to [1] or [2], further provided with a connecting component ( 15 ), which has a conductivity and the pipe (shielding pipe) 10 ) on a conductive section (object to be grounded) E ) of the vehicle body ( 21 ) attached. [4] Manufacturing process for a component in a vehicle body ( 21 ) laid wiring harness ( 100 ), Bending a metal tube (shielding tube) 10 ), into which an electrical cable ( 16 ) is introduced to form the pipe into a shape that resembles a pipeline (brake pipeline). 1 ) corresponds to, in order to be attached to the vehicle body ( 21 ) to be attached, Arranging the curved tube (shielding tube) 10 ) along the pipeline (brake pipeline) 1 ), before they are attached to the vehicle body ( 21 ) are attached and joint fastening of the pipeline (brake pipeline) 1 ) and the pipe (shielding pipe) 10) by a fastening component ( 40 ) at a distance along the length of the pipe, so that they are integrated. QUOTES INCLUDED IN THE DESCRIPTION

[0000] This list of documents cited by the applicant was automatically generated and is included solely for the reader's convenience. The list is not part of the German patent or utility model application. The DPMA accepts no liability for any errors or omissions. Cited patent literature

[0000] JP 2004171952 A

[0003]

Claims

[1] Wiring harness installed in a vehicle, comprising: an electrical cable and a metallic pipe into which the electrical conduit is inserted, wherein the tube has a stiffness that allows it to maintain its shape after bending and the pipe with the electrical cable inserted into it is bent so that the pipe is formed in a shape that corresponds to a pipe to be attached to the vehicle body. [2] Wiring harness according to claim 1, furthermore showing the pipeline, wherein the pipe into which the electrical cable is inserted is arranged along the pipeline and the pipeline and the pipe are jointly fixed by a fastening component at a distance in a longitudinal direction of the pipe, so that they are integrated. [3] Cable harness according to claim 1 or 2, further comprising a binding component which has a conductivity and which attaches the tube to a conductive section of the vehicle body. [4] Manufacturing method for a wiring harness installed in a vehicle body, comprising: Bending a metallic tube into which an electrical cable is inserted, in order to shape the tube into a form corresponding to a pipeline to be attached to the vehicle body; Arrange the curved pipe along the pipeline before attaching it to the vehicle body and The joint fastening of the pipeline and the pipe by a fastening component at a distance in a longitudinal direction of the pipe, so that they are integrated.

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