A vehicle trim or equipment component incorporating an electrical functional element, and the process and facilities for its manufacture.

Abstract

Vehicle trim or equipment part incorporating an electrical functional element, method and facilities for its manufacture The invention relates to a vehicle interior or exterior trim or equipment part (1), with at least a first surface body (2), at least a functional element (4) attached to the rear face (3') of said body (2) and sites, formations (5') and / or locations at the level of this rear face (3').A component characterized in that this functional element (4), with a linear structure and surface deployment, is made up of one or more linear element(s) (6), in particular lines of the wire or cable type, possibly associated with at least one adhesive (7) and / or insulating (8) material, and in that this or these linear element(s) (6) is / are, on the one hand, arranged with a surface coverage and directly attached to the back face (3') and, on the other hand, arranged according to a predefined layout configuration taking into account the locations of said sites, formations and / or locations (5') and with an extensive surface deployment between and / or around at least some of these sites, formations and / or locations (5'). Figure to be published with the abbreviation: Fig. 8.

Description

Title of the invention: Vehicle trim or equipment component incorporating an electrical functional element, method and facilities for its manufacture

[0001] The present invention relates to the field of interior or exterior vehicle trim, covering or equipment parts, of 2D or 3D shape, in particular surface extension parts incorporating electrical functional elements, the latter being able to be surface extension parts and to be formed of one or more linear elements or electrical lines (single-wire or multi-wire) configured so as to cover a given surface at the level of the part.

[0002] In this context, the invention relates to a piece of interior or exterior vehicle trim or equipment incorporating at least one such electrical functional element, as well as a method and facilities for its manufacture.

[0003] The trim, equipment or bodywork parts referred to include, but are not limited to, dashboards, door panels, center console panels, window pillars, interior roof panels and similar woodwork, exterior mirrors, bumpers, grilles, similar bodywork elements made of plastic, etc.

[0004] The functional elements in question are generally thin, in the form of planar and surface structures, and must be positioned close to the apparent surface of the part in order to perform their function satisfactorily, therefore generally under the layer or body of the part providing the apparent surface. They are also deformable and flexible in order to adapt to three-dimensional shapes.

[0005] The functions referred to, including for example heating, lighting, detection and measurement in the passenger compartment, reception, transmission and / or emission of signals, control, etc., provide useful services and improve the comfort of users, drivers and / or passengers. They generally require a connection to a power source or an electronic device for their activation or operation.

[0006] The invention relates more particularly to structural trim or cladding parts that are flat or at least partially non-planar and have a small thickness relative to their surface area. They consist mainly of self-supporting parts, preferably substantially at least locally rigid, having in particular a shape that is at least partially non-planar, preferably 3D.

[0007] Numerous embodiments of such parts are already known (see for example FR- A-3132255), in particular with the provision of a prefabricated functional element associated with a support layer, and also an overmolding of said functional element by a substrate integrating fixing and / or support elements of the part (formations of the type tabs or lugs or prominent anchoring or engagement sites) or even stiffening or structural reinforcement elements (for example ribs or wings).

[0008] However, when these fixing, support or stiffening elements are formed directly on the rear face of the body or layer to receive the surface functional element, the latter necessarily interferes locally with them (see [Fig.1]: view of the rear face of a trim piece according to the prior art).

[0009] This interference is all the more problematic as the surface functional element, on the one hand, and the said fixing, support or stiffening elements, on the other hand, must meet constraints or requirements specific to each.

[0010] Thus, the first should have the largest possible surface area, particularly for heating, lighting, transmission / reception (antenna function), or detection functions, and be easily manufactured (currently, for example, for prefabricated functional elements, in the form of a wire arrangement mounted on a support layer or sandwiched between two support layers) and be easily fixed to the relevant rear face. In particular, a multiplicity of shapes of the prefabricated surface functional element to adapt to various layouts, shapes, and sizes of the fixing, support, or stiffening elements increases their production costs (lack of standardization, multiple tooling, limited production runs, modification requiring production interruptions).

[0011] And, concerning the fixing, support or stiffening elements, their number and locations are often imposed by considerations of the strength of the assembly of the part in situ, of preserving a minimal gap with neighboring parts (if too far apart: aesthetic risk in terms of visual appearance) and of locating the anchoring sites, counter-support or additional fixing formations in the in situ assembly environment in the vehicle.

[0012] In addition, flexibility on the parts manufacturing line is limited and changes in the type of parts to be manufactured (with different configurations of the placement of the fixing, support or stiffening elements and different shapes of surface functional element) are tedious and have a strong impact on productivity.

[0013] The main purpose of the present invention is to overcome these drawbacks.

[0014] To this end, its main object is a trim or interior or exterior vehicle equipment part, in particular of three-dimensional shape, comprising, on the one hand, at least one first surface body with opposing apparent and rear faces, and on the other hand, at least one functional element attached to the face rear of said body and producing an action when electrically powered, and, finally, protruding support, reinforcement or fastening sites and / or formations, and / or dedicated locations also present on this rear face, part characterized in that said at least one functional element consists of at least one linear structure with a surface deployment, in that it is made up of one or more linear element(s), with a continuous structure, electrically conductive or resistive or reacting to electrical or electromagnetic energy, exhibiting flexibility properties, in particular lines of the wire or cable type, possibly associated with at least one adhesive and / or insulating material, and in that this or these linear element(s) is / are, on the one hand, arranged with a surface coverage and fastened directly to the rear face and, on the other hand,arranged according to a predefined layout configuration taking into account the locations of said sites, formations and / or locations and with an extensive surface deployment between and / or around at least some of these sites, formations and / or locations.

[0015] The invention also relates to a method and an installation for manufacturing such a part.

[0016] The invention will be better understood from the following description, which relates to preferred embodiments, given by way of non-limiting examples, and explained with reference to the accompanying schematic drawings, in which:

[0017] [Fig.2] is a schematic representation of a first embodiment of a installation for the production of a functional element placed on the rear face of the body of a trim piece according to the invention, this installation being implemented within the framework of a first variant of the manufacturing process according to the invention;

[0018] [Fig.3] is a cross-sectional view along AA and at a different scale of the body represented [Fig.2];

[0019] [Fig.4] is a cross-sectional view of a trim piece according to the invention formed of two bodies assembled together and presenting a functional element made according to the first variant of the process of the invention, where appropriate with use of the installation shown [Fig.2];

[0020] [Fig.5] is a partial schematic representation (robotic arm carrying the head or surface body not shown) of a second embodiment of an installation for the production of a functional element placed on the rear face of the body of a trim piece according to the invention, this installation being implemented within the framework of a second variant of the manufacturing process according to the invention;

[0021] [Fig.6A] and [Fig.6B] are cross-sectional views (at a different scale) along BB and CC of the body shown [Fig.5];

[0022] [Fig.7] is a cross-sectional view of a trim piece according to the invention formed of two bodies assembled together and presenting a functional element made according to the second variant of the process of the invention, where appropriate with use of the installation shown [Fig.5];

[0023] [Fig.8] is a view of the rear face of a part according to the invention with a functional element made in accordance with the second variant of the embodiment of the process according to the invention;

[0024] [Fig.9] is a partial sectional view along DD and at another scale of the part shown [Fig.8].

[0025] Figures 2 to 5 and 7 to 9 show, at least in part, a piece 1 of interior or exterior vehicle trim or equipment, in particular of three-dimensional shape, comprising, on the one hand, at least a first surface body 2 with opposing apparent faces 3 and rear 3', on the other hand, at least one functional element 4 attached to the rear face 3' of said body 2 and producing an action when electrically supplied, and, finally, sites 5 and / or protruding formations 5' for support, reinforcement or bonding, and / or dedicated locations 5” also present at the level of this rear face 3'.

[0026] The first body 2, and the possible second body 9 mentioned below, may have either a two-dimensional, three-dimensional or partly 2D and 3D constitution, as can the trim piece 1.

[0027] The first body 2 may consist entirely of a part made from a plastic mold with the sites and / or formations 5, 5' protruding and possibly the locations 5”, said body then forming the part 1 by itself and its front face 3 in this case constitutes the visible apparent face of said part 1. Alternatively, the first body 2 - made from a plastic mold with the sites and / or formations 5, 5' - may form only the substrate of the part 1, on the front face 5 of which one or more other layers (comfort, decorative, etc.) are deposited and bonded, partially or totally covering said face 3.

[0028] The protruding support, reinforcement or bonding sites 5 and / or formations 5', and any locations 5”, can in particular be used for the in situ mounting of the part 1 in its mounting environment or for the assembly of the first body 2 with at least a second body 9 which is also part of the trim piece 1,

[0029] The protruding formations 5' can consist, for example, of reinforcement formations in the form of ribs, of bonding formations in the form of flanges, wings or legs, and / or of support formations or sites in the form of a finger, lug, or overthicknesses.

[0030] According to the invention, said at least one functional element 4 consists of at least one linear structure with a surface deployment. Furthermore, it is made up of by one or more linear element(s) 6, with a continuous structure, electrically conductive or resistive or reacting to electrical or electromagnetic energy, exhibiting flexibility properties, in particular wire or cable type lines. Furthermore, this or these linear element(s) (6) (are) on the one hand, arranged with a surface cover and directly attached to the rear face 3' and, on the other hand, arranged according to a predefined layout configuration taking into account the locations of said sites, formations and / or locations 5, 5', 5" and with an extensive surface deployment between and / or around at least some of the sites, formations and / or locations 5, 5', 5". The linear element(s) may be associated with at least one adhesive material 7 and / or insulating material 8, on which it is placed or which surrounds or covers it, partially or totally, over its entire length or over only one or more parts.

[0031] In the present, the terms "conductor", "resistive" and "insulator" refer to the electrical properties of the materials concerned, and the term "reinforcement" refers to structural or mechanical reinforcement, or even the reinforcement of rigidity.

[0032] Thanks to the aforementioned provisions, the invention makes it possible to overcome the drawbacks indicated and to reconcile the constraints and requirements of at least one functional element 4 and the protruding sites and / or formations 5, 5' and possibly locations 5”. It proposes a trim or equipment part 1 of the aforementioned type in which the constraints of the placement of the two types of elements are respected and interferences avoided, without sacrificing a near-optimized implementation of each of them. Moreover, the solution according to the invention exhibits great adaptability in terms of embodiments and configurations and does not entail significant changes or a notable increase in complexity at the manufacturing level.

[0033] The part 1 may comprise one, two, or more functional element(s) 4 extending over only a part or substantially all of the surface of the rear face 3'. The functional element(s) 4 may consist of a single linear element 6, with two electrical connection terminals and covering a given area of ​​the rear face 3'. Alternatively, the functional element(s) 4 may comprise at least two independent linear elements 6, each having its own connection terminals and which may or may not be interlocked on the surface.

[0034] According to a first embodiment, shown in particular in [Fig.2] to 4, the linear element or each linear element 6 is secured, advantageously continuously over its entire length, by adhesion or welding with the surface of the rear face 3', for example by a material bond by gluing or by adhesive fusion or welding between compatible materials, brought into contact in a hot state.

[0035] These characteristics allow for good support and secure fastening of the linear elements with the back face of the part, and therefore avoid noise or vibration problems when the vehicle is in motion, and improve the desired effect or functionality by activating the functional element, thanks to the proximity with the front surface of the part.

[0036] Advantageously, the linear element or each linear element 6 comprises an envelope with insulating and adhesive properties, whether from the manufacture of said element 6 or not, and which is in the form of either an envelope of insulating material 8 coated with an outer layer of adhesive material 7, or an envelope of material with insulating and adhesive properties 7,8.

[0037] Thanks to this arrangement, we achieve an optimization of material consumption, a better efficiency of the insulation and the adhesive material, a better proximity of linear element / insulating and / or adhesive material.

[0038] In accordance with a second embodiment, shown in particular in figures 5 to 9, the linear element or each linear element 6 is secured by gluing to the rear face 3' by being embedded in a strip or mesh of adhesive material 7, and possibly insulating material 8, which is present either on the surface of the rear face 3', or in a groove 10 present in this rear face 3' and also receiving said linear element 6.

[0039] It is thus possible to separate the step of applying the linear element from the adhesive and / or the insulation, allowing for a different geometry for the linear element and the adhesive and the insulation, and also to use less complex and / or sophisticated, and therefore less expensive, industrial means

[0040] Naturally, we are looking for a deposition configuration for the linear element(s) 6 that bypasses as closely as possible the protruding sites and / or formations 5, 5' and possibly the locations 5”.

[0041] However, when this is not possible, and in relation to this second embodiment, it may be provided that at least one of the sites 5 and / or the protruding support, reinforcement, or bonding formations 5' extends over the one or at least one linear element 6 mounted in the surface of the rear face 3'. This arrangement gives the invention an even greater possibility of adaptability and resolution of possible interferences between said at least one functional element 4 and the protruding sites and / or formations 5, 5' and possibly the locations 5”. It is thus possible to disregard the presence of the sites and / or formations, to eliminate the need to work around them, and to adapt to geometric conditions or installation configurations.

[0042] As an alternative to a total wrap, over the entire length, it may be provided that at least part of said at least one linear element 6 is not covered with adhesive material 7 and / or insulating material 8, and is exposed bare at the rear face 3' of the body 2.

[0043] These characteristics allow the linear element to be released locally, either for to allow additional local connections, either to allow it to adapt to certain configurations or geometries, or to reduce the use and therefore the cost of adhesive / insulating materials, in places where their presence is not necessary.

[0044] Part 1 may comprise only one functional element 4, but may also, alternatively, comprise at least two distinct surface functional elements 4, fulfilling similar, different, or complementary functions. The linear element or elements 6 have at at least one of their ends a connector or similar connecting means, for example, at the end of a free extremity portion not fixed to the surface body 2.

[0045] It is then possible to have polarities or a voltage differential between the at least two linear elements 6 present, or to increase the efficiency in terms of the desired effect by doubling or multiplying the linear elements 6, or to have a multiplicity of different juxtaposed functions.

[0046] The first surface body 2 can constitute by itself the body of the part (1), or even by itself the entire part 1 (see figures 2, 3 and 6B).

[0047] Alternatively, part 1 may be a composite part. In this case, it may comprise at least a second body 9, assembled with the first surface body 2 at corresponding locations 5” on the rear face 3' of the latter, the mounting configuration of the linear element(s) 6 also taking into account these locations 5”.

[0048] The invention also relates to a method for manufacturing a part 1 of interior or exterior vehicle trim or equipment, in particular of three-dimensional shape, for example a part 1 as described above, this part 1 comprising, on the one hand, at least a first surface body 2 with opposing apparent faces 3 and rear faces 3', on the other hand, at least one functional element 4 attached to the rear face 3' of said body 2 and producing an action when electrically powered, and, finally, sites 5 and / or protruding formations 5' for support, reinforcement or fastening, and / or dedicated locations 5” also present on this rear face 3', said or each functional element 4 consisting of at least one linear structure deployed on the surface and being made up of one or more linear element(s) 6, with a continuous structure, electrically conductive or resistive, having flexibility properties,including line(s) of the wire or cable type.

[0049] In accordance with the invention, this method is characterized in that it consists of providing a first surface body 2 with, at the level of its rear face 3', the aforementioned sites and / or formations 5, 5' or at least locations 5" for the implantation of these sites and / or formations 5, 5', and, where applicable for each functional element 4, carrying out a progressive linear deposition with bonding of the linear element(s) 6. directly on or in the rear face 3', with surface coverage and following a predefined deposition path taking into account said sites, formations and / or locations 5, 5', 5" and resulting in an extensive surface deployment between and / or around at least some of the sites, formations and / or locations 5, 5', 5".

[0050] This process advantageously allows the production of a part 1 having the characteristics mentioned above.

[0051] The bonding can be achieved without any particular material input, for example by printing or welding the linear element 6 concerned directly onto the rear face 3'.

[0052] Alternatively, the process may also consist of carrying out an associated deposit, before, during or after the deposition of the corresponding linear element 6, of at least one adhesive material 7 and / or insulating material 8 intended to secure this or these linear element(s) 6 directly with the rear face 3'.

[0053] According to a first embodiment of the aforementioned variant, shown by way of example in Figures 2 to 4, the process may consist of co-extruding, or delivering from a reel the or each linear element 6 of the wire or cable type 6 either with a sheath of insulating material 8 coated with an outer layer of adhesive material 7, or with a sheath of material with insulating and adhesive properties 7, 8, and depositing it progressively at the level of the rear face 3' following the predefined deposition path, preferably with a surface deposition, and with activation of the sticky properties of the adhesive material 7 before deposition, if necessary.

[0054] Thus, we can achieve an optimization of material consumption, a better efficiency of the insulation and the glue, and a better proximity of the linear element to the insulating and / or adhesive material.

[0055] According to a second embodiment of the aforementioned variant, shown by way of example in figures 5 to 9, the process may consist of depositing on the rear face 3', substantially at the same time or successively, from two different sources and following the same predefined deposition path, a strip or a net of sticky material 7, and possibly insulating material 8, then said linear element 6 of the wire or cable type 6 by embedding it in said strip or net or by placing it on top of it.

[0056] In this case, it is possible to separate the step of depositing the linear element from that of the glue and / or the insulator, allowing the implementation of a different geometry for the linear element and the glue and the insulator, and also to use less complex and / or sophisticated, therefore less expensive, industrial means.

[0057] In this second mode, it may be provided that a first surface body 2 is provided, the rear face 3' of which has, where appropriate for each wire or cable 6 conductor to be deposited, a groove 10, either molded or machined, and that the strip or thread of The adhesive and insulating material 7, 8 and the wire or cable 6 are placed in this groove 10, preferably substantially flush with the rear face 3', and the wire or cable 6 is embedded in the strip or groove. Thus, the linear element 6 is embedded and therefore not visible and is protected from the outside.

[0058] In the two preceding modes of the variant of the method, and according to a possible feature of the invention, characterized in that the deposition of the strip or net of sticky material 7, and optionally insulating material 8, intended to receive and wrap the linear element 6 of the wire or cable type 6 and deposited separately from the latter, is deposited in two successive application phases, one before and the other after the deposition of the linear element 6 concerned.

[0059] This feature also makes it possible to separate the linear element deposition step from that of the glue and / or the insulator, allowing a different geometry to be implemented for the linear element and the glue and the insulator, and also to use less complex and / or sophisticated industrial means, therefore less expensive and more adaptable.

[0060] Advantageously, the progressive linear deposition of the wire or each wire or cable 6, with associated deposition of at least one adhesive material 7 and / or insulating material 8, surrounding this wire or cable 6 before deposition or intended to surround it after deposition, is carried out by means of at least one suitable deposition head 11, appropriately supplied and displaced relative to the surface body 2 so as to follow a predefined, for example pre-programmed, deposition path, resulting in an implantation configuration that takes into account the location of at least some sites, formations and / or locations 5, 5', 5", preferably so as to avoid them all. Thus, improved precision and control of the deposition of each linear element 6 is achieved.

[0061] When more than one functional element 4 is provided for the part 1, the method may consist of carrying out at least two progressive linear deposits of a wire or cable 6, with possible associated deposit of at least one adhesive material 7 and / or insulating material 8 surrounding this wire or cable 6 before deposit or intended to surround it after deposit, these separate deposits being carried out simultaneously or consecutively by several depositing heads 11 or consecutively by the same depositing head 11, the or each depositing head 11 being fed appropriately and moved relative to the surface body 2 so as to follow a predefined, for example preprogrammed, depositing path resulting in an implantation configuration taking into account the location of at least some sites, formations and / or locations 5, 5', 5", preferably so as to avoid them all, and where appropriate the implantation configuration of the other depositing head(s).No associated deposition of material 7, 8 is carried out in the case of deposition by printing or with welding of the line or wire or cable 6. .

[0062] Thus, we have more flexibility and latitude in the configurations, in the deposition geometries and therefore in the effects obtained after activation of the functional element 4.

[0063] Preferably, for reasons of flexibility and simplicity of tooling, it may be provided to implement a robotic arm 12, for example with six axes, for the support and movement of one between the surface body 2 and a depositing head 11, the other being advantageously mounted on a fixed support.

[0064] Within the framework of the process according to the invention, the following variants may be envisaged:

[0065] - deposit of a single linear element 6 or several, in the latter case in one single pass or in several successive passes;

[0066] - the linear element 6 can, during deposition, be unwound or uncoiled (from a reel), be extruded, or spun or printed by a suitable head (conductive inkjet printing, for example);

[0067] - the application of glue or adhesive material 8 ensuring the assembly of the element linear 6 on the substrate (rear face of the surface body 2) can be done before the deposition of the linear element 6 (several passes), or simultaneously with it (one single pass), by extrusion, spraying, ejection or application with a roller / brush;

[0068] - the deposition of the insulating material 7, and its placement around or on the linear element 6 corresponding, can be done before the deposition of the linear element 6 (several passes), or simultaneously with it (a single pass), by extrusion, spraying, ejection or application with a roller / brush. This material can of course also already be present around said linear element 6 before its deposition (co-extrusion, unwinding of sheathed wire);

[0069] - the insulating and adhesive materials 7 and 8 may be separate or consist of a single substance (insulating glue, thermoplastic, polypropylene, so-called "hot melt", two-component glue, etc.), therefore to be deposited in a single pass or several passes;

[0070] - at least one of the insulating and adhesive materials 7, 8 can be deposited in a groove present in the rear face 3'; - only an adhesive material 7 is deposited in a strip on the rear face 3' and the corresponding linear element 6 is simply applied on top of it; - the deposition and bonding of the linear element 6 with the rear face 3' are carried out by direct printing of a strip or line of conductive material on this face; - the joining of the linear element 6 with the rear face 3' is achieved by welding without the addition of material.

[0071] Finally, the invention also relates to an installation for the realization of a functional element 4 formed of at least one linear element 6, electrically conductive or resistive, exhibiting flexibility properties, particularly of the wire or cable type, and arranged to cover a surface area, as part of a manufacturing process for a part 1 of interior or exterior vehicle trim or equipment as described above.

[0072] According to a first constructive variant, this installation is characterized in that it comprises at least one deposition head 11 co-extruding or delivering the wire or each wire or cable 6 either with an insulating material sheath 8 coated with an outer layer of adhesive material 7, or with a material sheath having insulating and adhesive properties 7, 8, as it is deposited at the rear face 3' following a predefined deposition path executed by relative displacement with respect to the rear face 3' of a surface body 2 of said part 1 in accordance with a prior program taking into account at least certain sites, formations and / or locations 5, 5', 5”, preferably with a surface deposition, and with activation of the sticky properties of the adhesive material 7 before deposition, if applicable.

[0073] According to a second constructive variant, this installation is characterized in that it comprises at least one deposition head 11 configured to simultaneously deposit, on the one hand, a strip or mesh of sticky material 7, and optionally insulating material 8, in liquid or viscous state, and, on the other hand, the wire or cable 6 by embedding it in said strip or mesh, this at the level of the rear face 3' and following a predefined deposition path executed by relative displacement with respect to the rear face 3' of a surface body 2 of said part 1 in accordance with a prior programming taking into account at least certain sites, formations and / or locations 5, 5', 5”, the simultaneous deposits being carried out in a groove 10 whose outline corresponds to the predefined deposition path.

[0074] In both variants, the same installation allows for the production of a wide variety of parts 1 with different configurations of the linear element(s) 6, in particular of the wire or cable type, only the programming of the deposition path needing to be modified.

[0075] In accordance with a favorable constructive feature, the installation may include a robotic arm 12, for example with six axes, for the support and movement of one among the surface body 2 and at least one deposition head 11, the other being advantageously mounted on a fixed support.

[0076] It may also be provided that this installation includes several deposition heads 11 each carried by a separate robotic arm 12 or carried together by the same robotic arm 12.

[0077] Thus, according to one chosen variant, it is possible to consider a head 11 with several effectors that deposit the wire and the different substances (materials 7 and 8) all at once or jointly, or just immediately successively, thanks to a Head 11 with several outlets that deliver the different elements. According to another possible embodiment, at least two joined heads 11, arranged one after the other, can be mounted on the same robot arm 12. According to yet another embodiment, the robot arm 12 can be provided to move back and forth and retrieve the different heads 11 intended for the different materials 7 and 8 to be deposited.

[0078] Of course, the invention is not limited to the embodiments described and shown in the accompanying drawings. Modifications remain possible, particularly with regard to the construction of the various elements or by substitution of technical equivalents, without departing from the scope of protection of the invention.

Claims

Claims

1. Part (1) of interior or exterior vehicle trim or equipment, in particular of three-dimensional shape, comprising, on the one hand, at least one first surface body (2) with opposite front or visible (3) and rear (3') faces, on the other hand, at least one functional element (4) attached to the rear face (3') of said body (2) and producing an action when it is electrically powered, and, finally, sites (5) and / or projecting formations (5') for support, reinforcement or securing, and / or dedicated locations (5”) also present at this rear face (3'), part (1) characterized in that said at least one functional element (4) consists of at least one linear structure with a surface deployment, in that it is constituted by one or more linear element(s) (6), with a continuous structure, electrically conductive or resistive or reacting to energy electric or electromagnetic,having flexibility properties, in particular lines of the wire or cable type, possibly associated with at least one adhesive (7) and / or insulating (8) material, and in that this or these linear element(s) (6) is (are), on the one hand, arranged with a surface coverage and secured directly to the rear face (3') and, on the other hand, arranged according to a predefined implantation configuration taking into account the locations of said sites, formations and / or locations (5, 5', 5”) and with an extended surface deployment between and / or around at least certain sites, formations and / or locations (5, 5', 5”).,

2. A piece of trim or equipment according to claim 1, characterized in that the or each linear element (6) is secured, advantageously continuously over its entire length, by adhesion or welding with the surface of the rear face (3'), for example by a material bond by gluing or by adhesive fusion or welding between compatible materials, brought into contact in a hot state.

3. Part of fitting or equipment according to claim 1 or 2, characterized in that the or each linear element (6) comprises an envelope with insulating and adhesive properties, coming from the manufacture of said element (6) or not and which is in the form either of an envelope of insulating material (8) coated with an outer layer of adhesive material (7), or of an envelope of material with insulating and adhesive properties (7, 8).

4. Part of trim or equipment according to claim 1, characterized in that the or each linear element (6) is secured by gluing with the rear face (3') by being embedded in a strip or a net of adhesive material (7), and possibly insulating (8), which is present either on the surface of the rear face (3'), or in a groove (10) present in this rear face (3') and also receiving said linear element (6).

5. A piece of trim or equipment according to claim 4, characterized in that at least one of the support, reinforcement or securing sites (5) and / or protruding formations (5') extends over the or at least one linear element (6) mounted in the surface of the rear face (3').

6. A piece of trim or equipment according to any one of claims 1 to 5, characterized in that at least part of said at least one linear element (6) is not covered with adhesive (7) and / or insulating (8) material, and is exposed bare at the rear face (3') of the body (2).

7. A piece of trim or equipment according to any one of claims 1 to 6, characterized in that it comprises at least two distinct surface functional elements (4), fulfilling similar, different or complementary functions.

8. A piece of trim or equipment according to any one of claims 1 to 7, characterized in that it comprises at least one second body (9), assembled with the first surface body (2) at corresponding locations (5”) of the rear face (3') of the latter, the implantation configuration of the linear element(s) (6) also taking into account these locations (5”).

9. Method for manufacturing a part (1) of interior or exterior vehicle trim or equipment, in particular of three-dimensional shape, for example a part (1) according to one of claims 1 to 8, this part (1) comprising, on the one hand, at least a first surface body (2) with opposite visible (3) and rear (3') faces, on the other hand, at least one functional element (4) attached to the rear face (3') of said body (2) and producing an action when it is electrically powered, and, finally, sites (5) and / or projecting formations (5') for support, reinforcement or securing, and / or dedicated locations (5”) also present at this rear face (3'), said or each functional element (4) consisting of at least at least one linear structure deployed surface-wise and consisting of one or more linear element(s) (6), with a continuous structure, electrically conductive or resistive, having flexibility properties, in particular line(s) of the wire or cable type method characterized in that it consists in providing a first surface body (2) with, at its rear face (3'), the aforementioned sites and / or formations (5, 5') or at least locations (5”) for implantation of these sites and / or formations (5, 5'), to carry out, where appropriate for each functional element (4), a progressive linear deposition with attachment of the linear element(s) (6) directly on or in the rear face (3'), this with a surface coverage and following a predefined deposition path, taking into account said sites, formations and / or locations (5, 5', 5”) and resulting in an extended surface deployment between and / or around at least less certain sites,formations and / or locations (5, 5', 5”).,

10. Manufacturing method according to claim 9, characterized in that it also consists of carrying out an associated deposition, before, during or after deposition of the corresponding linear element (6), of at least one adhesive (7) and / or insulating (8) material intended to secure this or these linear element(s) (6) directly with the rear face (3').

11. Manufacturing method according to claim 9 or 10, characterized in that it consists of coextruding, or delivering from a reel the or each linear element (6) of the wire or cable type (6) either with an envelope of insulating material (8) coated with an outer layer of adhesive material (7), or with an envelope of material with insulating and adhesive properties (7, 8), and depositing it gradually at the rear face (3') following the predefined deposition path, preferably with surface deposition, and with activation of the sticky properties of the adhesive material (7) before deposition, if applicable.

12. Manufacturing method according to claim 9 or 10, characterized in that it consists of depositing at the rear face (3'), substantially at the same time or successively, coming from two different sources and following the same predefined deposition path, a strip or a net of sticky material (7), and possibly insulating material (8), then said linear element (6) of the wire or cable type (6) by embedding it in said strip or said net or by placing it on it.

13. Manufacturing method according to claim 12, characterized in that it consists of providing a first surface body (2) whose rear face (3') has, where appropriate for each conductive wire or cable (6) to be deposited, a groove (10), molded or machined, and to deposit the strip or net of adhesive and insulating material (7, 8) and the wire or cable (6) in this groove (10), preferably in a substantially flush manner with respect to said rear face (3') and by embedding the wire or cable (6) in said strip or said net.

14. Manufacturing method according to any one of claims 10 to 13, characterized in that the deposition of the strip or net of adhesive material (7), and possibly insulating material (8), intended to receive and envelop the or each linear element (6) of the wire or cable type (6) and deposited separately from the latter, is deposited in two successive application phases, one before and the other after the deposition of the linear element (6) concerned.

15. Manufacturing method according to any one of claims 10 to 14, characterized in that the progressive linear deposition of the or each wire or cable (6) with associated deposition of at least one adhesive (7) and / or insulating (8) material, surrounding this wire or cable (6) before deposition or intended to surround it after deposition, is carried out by means of at least one adapted deposition head (11), supplied appropriately and moved relatively to the surface body (2) so as to follow a predefined deposition path, for example preprogrammed, resulting in an implantation configuration taking into account the location of at least certain sites, formations and / or locations (5, 5', 5”), preferably so as to avoid all of them.

16. Manufacturing method according to any one of claims 10 to 15, characterized in that it consists of carrying out at least two progressive linear depositions of a wire or cable (6) with or without associated deposition of at least one adhesive (7) and / or insulating (8) material surrounding this wire or cable (6) before deposition or intended to surround it after deposition, these separate depositions being carried out simultaneously or consecutively by several deposition heads (11) or consecutively by the same deposition head (11), the or each deposition head (11) being supplied appropriately and moved relatively to the surface body (2) so as to follow a predefined deposition path, for example preprogrammed, resulting in an implantation configuration taking into account the location of at least certain sites, formations and / or locations (5, 5', 5”), preferably so as to avoid all of them, and where appropriate the implantation configuration of the other deposit head(s).

17. Manufacturing method according to any one of claims 15 and 16, characterized in that it consists of implementing a robotic arm (12), for example with six axes, for the support and movement of one of the surface body (2) and a deposition head (11), the other being advantageously mounted on a fixed support.

18. Installation for producing a surface functional element (4) formed from at least one linear element (6), electrically conductive or resistive, having flexibility properties, in particular of the wire or cable type, and arranged to cover a surface area, within the framework of a method for manufacturing a part (1) of interior or exterior vehicle trim or equipment according to any one of claims 10 to 17, installation characterized in that it comprises at least one deposition head (11) coextruding or delivering the or each wire or cable (6) either with an envelope of insulating material (8) coated with an outer layer of adhesive material (7), or with an envelope of material with insulating and adhesive properties (7, 8),this as it is deposited at the rear face (3') following a predefined deposition path executed by relative displacement with respect to the rear face (3') of a surface body (2) of said part (1) in accordance with prior programming taking into account at least certain sites, formations and / or locations (5, 5', 5”), preferably with surface deposition, and with activation of the sticky properties of the adhesive material (7) before deposition, where appropriate.,

19. Installation for producing a functional element (4) formed from at least one linear element (6), electrically conductive or resistive, having flexibility properties, in particular of the wire or cable type, and arranged to cover a surface area in the context of a method for manufacturing a part (1) of interior or exterior vehicle trim or equipment according to any one of claims 10 to 17, installation characterized in that it comprises at least one deposition head (11) configured to simultaneously deposit, on the one hand, a strip or a net of sticky material (7), and possibly insulating (8), in the liquid or viscous state, and, on the other hand, the wire or cable (6) by embedding it in said strip or said net, this at the level of the rear face (3') and following a predefined deposition path executed by relative displacement by relative to the rear face (3') of a surface body (2) of said part (1) in accordance with a prior programming taking into account at least certain sites, formations and / or locations (5, 5', 5”), the simultaneous deposits being carried out in a groove (10) whose path corresponds to the predefined deposition path.

20. Installation according to claim 18 or 19, characterized in that it comprises a robotic arm (12), for example with six axes, for the support and movement of one of the surface body (2) and at least one deposition head (11), the other being advantageously mounted on a fixed support.

21. Installation according to claim 18 or 19, characterized in that it comprises several deposition heads (11) each carried by a specific robotic arm (12) or carried together by the same robotic arm (12).

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