Device for insulating component of interior trim parts for vehicle and method of producing such a device

Abstract

Device for insulating component of interior trim parts for a vehicle and method for producing such a device. The present invention relates to a device for insulating component of interior trim parts for a vehicle, said device comprising, on the one hand, an insulating component of interior trim parts (1) made of one or more layers of material and having a three-dimensional shape and two opposite faces (1a, 1b), namely a first face (1a) capable and intended to form a visible face and a second face (1b) capable and intended to form the reverse of the insulating component of interior trim parts (1) and, on the other hand, at least one thin and / or flat functional element (2).It is characterized in that the first face (1a) and / or the second face (2a) comprises, or each comprises, at least one concavity (3) open to the exterior of the insulating component of interior trim parts (1) and in that the or at least one of the functional element(s) (3) is housed in the or one of the concavities (3) while being fixedly held in the latter, the presence of the or each concavity (3) locally reducing the thickness of the insulating component of interior trim parts (1) and / or locally increasing the density of the insulating component of interior trim parts (1). It also relates to a method for producing such a device. Figure to be published with the abstract: Fig. 1.

Description

Title of the invention: Device for insulating component of interior trim parts for vehicle and method for producing such a device

[0001] The present invention relates to the field of vehicle interior trim parts and in particular the integration of functions into such trim parts. It relates to an insulating component device for interior trim parts and a method for producing such a device.

[0002] A vehicle is understood to mean any land motor vehicle such as, for example, a motor vehicle.

[0003] An interior trim piece is understood to mean any piece of trim, covering or lining arranged or integrated into the passenger compartment of such a vehicle and including, but not limited to, for example, dashboards, door panels, center console panels, roof lining panels.

[0004] The present invention relates more particularly to the insulating components of these interior trim pieces, hereinafter referred to as interior trim piece insulating components. These interior trim piece insulating components each form a part or a sub-part or the whole of an interior trim piece and are made of materials having high acoustic and insulating properties.

[0005] Such an insulating component for interior trim parts is made up of one or more layers of material and has a three-dimensional shape and two opposite faces each having an external surface, namely a first face suitable and intended to form a visible face, that is to say a face facing the interior passenger compartment of the vehicle and a second face suitable and intended to form the reverse side of the interior trim part.

[0006] Furthermore, such an insulating component of interior trim parts comprises at least one thin (or fine), generally flexible or supple, functional element allowing the performance of particular functions such as, for example, heating, lighting, detection, reception, transmission. These functions, thus integrated into the trim parts, make it possible to provide information and comfort improvement services to users (drivers and / or passengers). The functional elements require a connection to an electrical energy source and / or to an electronic / electrical device for their activation and / or operation.

[0007] Such a functional element comprises a functional part and a rigid or flexible support. The functional part, generally in the form of a wire conducting electric current, makes it possible to perform the function, by example one of the aforementioned functions. For this purpose, the functional part is connected to an electrical energy source and / or to an electronic / electrical device for its activation and / or operation. The support allows the maintenance, holding and / or cohesion of the functional part. The support is generally made of a textile (non-woven, felt, woven, knitted), a film, a skin or a plastic or metallic layer. The support is generally deformable to be able to adapt to the vehicle trim part.

[0008] The functional elements are generally arranged on the reverse side of the trim piece and a problem encountered with these trim pieces is that they do not allow, or only with difficulty, in the direction of their thickness, the transfer or transmission of the function, for example, the transmission or transfer of heat, the transmission of light or the transmission of detection signals to and / or through the visible opposite face. This problem concerns more particularly the insulating components of interior trim pieces made from materials with high insulating / acoustic properties, such as fiber-based felts or foams.

[0009] One solution to this problem would be to increase the activation energy of the functional elements, but this energy would have to be significant to pass through the insulating component of interior trim parts in its thickness, which would go against the control or reduction of energy consumption currently desired in vehicles. Another solution would be to replace the materials of the insulating components of interior trim parts with other materials allowing better transmission or transfer. However, these materials are generally light, with little rigidity and do not need to be fixed in a reinforced manner because they do not create noise during vibrations in the vehicle.Their replacement with other more rigid and heavier materials, allowing better transfer or transmission of energy or signal, would require modification of the fixing system to limit noise during vehicle vibrations, which would harm their primary insulation quality and increase the complexity and cost of fixing the interior trim piece in the vehicle and would considerably increase the mass of the trim piece.

[0010] Another problem encountered with these insulating components of interior trim parts integrating functions is the load-bearing and maintenance of the functional elements and in particular of their support in said trim parts, whether these are arranged on the reverse side of the trim part components or on the side of their visible face.

[0011] The present invention aims to overcome these drawbacks.

[0012] The present invention relates to an insulating component device for interior trim parts for a vehicle, said device comprising, on the one hand, a interior trim part component consisting of one or more layers of material and having a three-dimensional shape and two opposite faces, namely a first face suitable and intended to form a visible face and a second face suitable and intended to form the reverse side of the insulating interior trim part component and, on the other hand, at least one thin and / or flat, preferably flexible or supple functional element, comprising a functional part suitable and intended to be or being connected to an electrical energy source and / or to an electronic / electrical device for its activation and / or its operation and a rigid or supple or flexible support, characterized in that the first face and / or the second face comprises, or each comprises,at least one concavity open to the exterior of the insulating component of interior trim parts and in that the or at least one of the functional element(s) is housed in the or one of the concavities while being held fixedly in the latter, the presence of the or each concavity locally reducing the thickness of the insulating component of interior trim parts and / or locally increasing the density of the insulating component of interior trim parts.

[0013] The present invention also relates to a method for producing an insulating component device for interior trim parts according to the present invention, characterized in that it consists of:

[0014] - to produce the insulating component of interior trim parts in a mold of compression or injection,

[0015] - to produce in the compression or injection mold the concavity(ies) of such as to locally reduce, at the level of the or each or at least one of the concavities, the thickness of the insulating component of interior trim parts and / or to locally increase, at the level of the or each concavity or at least one of the concavities, the density of the insulating component of interior trim parts,

[0016] - and to house the or at least one of the functional element(s) in the or at least one of the concavities while holding it firmly in the latter.

[0017] The invention will be better understood from the following description, which relates to a preferred embodiment, given by way of non-limiting example, and explained with reference to the appended schematic drawings, in which:

[0018] [Fig-1] is a cross-sectional view of an insulating component device of interior trim pieces according to the present invention, with a functional element located in a concavity of the reverse side of the insulating component of interior trim pieces,

[0019] [Fig.2] is a cross-sectional view of an insulating component device of interior trim pieces according to the present invention with a functional element located in a concavity of the exposed face of the insulating component of interior trim parts,

[0020] [Fig.3] shows the insulating component of interior trim parts of the device of insulating component of interior trim parts shown in [Fig.l] or 2, without the functional element.

[0021] [Fig.4] is a cross-sectional view of an insulating component device of interior trim pieces according to the present invention with a multi-layer interior trim piece insulating component and a functional element located in a concavity of the reverse side of said multi-layer interior trim piece insulating component,

[0022] [Fig.5] is a cross-sectional view of an insulating component device of interior trim parts according to the present invention with a multi-layer interior trim part insulating component and a functional element located in a concavity of the exposed face of the multi-layer interior trim part insulating component,

[0023] [Fig.6] shows the insulating component of interior trim parts of the device of insulating component of interior trim part shown in [Fig.4] or 5, without the functional element,

[0024] [Fig.7] is a cross-section of a functional element,

[0025] [Fig.8] is a top plan view of a functional element with a means of connection extending the functional part to allow its connection to a power source and / or a remote electrical / electronic device.

[0026] [Fig.9] is a cross-sectional view of an insulating component device of interior trim pieces according to the present invention in another embodiment,

[0027] [Fig. 10] is a cross-sectional view of an interior trim part insulating component device according to the present invention in another embodiment.

[0028] The attached figures show a device for insulating component of interior trim parts for a vehicle, said device comprising:

[0029] - an insulating component of interior trim parts 1 consisting of one or several layers of material and having a three-dimensional shape and two opposite faces 1a, 1b, namely a first face 1a suitable and intended to form a visible face of the insulating component of interior trim parts and a second face 1b suitable and intended to form the reverse side of the insulating component of interior trim parts 1,

[0030] - and at least one thin (or fine) and / or flat functional element 2, preferably flexible or supple, comprising a functional part 2a suitable and intended to be or being connected to an electrical energy source and / or to an electronic / electrical device for its activation and / or its operation and a rigid or flexible support 2b.

[0031] The term "visible face" (first face 1a) of the insulating component of interior trim parts 1 means the face of the insulating component of interior trim parts 1 facing the interior of the vehicle passenger compartment (figures 1, 2, 4, 5).

[0032] An interior trim insulating component 1 is understood to mean a part or sub-part or the whole of an interior trim (or trim or lining) part arranged or integrated in the passenger compartment of a vehicle. Such an interior trim part includes, but is not limited to, for example, dashboards, door panels, center console panels, roof lining panels. Preferably, such an interior trim insulating component 1 according to the present invention may be provided to be mounted under the driver's side dashboard of the vehicle or under the passenger's side glove box area.

[0033] Preferably, the support 2b of the or each functional element 2 may be a textile support (non-woven, felt, woven, knitted), a film, a skin, a plastic layer. Preferably, such a support 2b may be deformable. Such a support 2b has the function of supporting and / or protecting and / or ensuring the holding of the functional part 2a.

[0034] In a particular embodiment, the support 2b may be made from a material having shock-absorbing properties. In this case, the support 2b may be made with a shock-resistant and / or shock-absorbing material. Such a support 2b may be, for example, a plastic film, a plastic plate or a reinforcing fabric.

[0035] The or each functional element 2, thanks to its functional part 2a, can perform different functions such as for example: lighting, heating or detection.

[0036] If we look at [Fig. 8], we can see that, to allow its connection to an electrical energy source and / or to an electronic / electrical device, the or each functional element 2 can be associated with at least one elongated connection means 2c (not shown in Figures 1 to 7 and 9 to 10). The elongated connection means 2c is suitable and intended to be connected to an electrical energy source and / or to an electronic / electrical device. The elongated connection means 2c thus makes it possible to extend, preferably continuously (i.e. without electrical discontinuity due for example to a connection or an electrical connection), the functional part 2a of the functional element 2 to allow its electrical supply and / or the transmission of electrical signals.The present invention may provide that such an elongated connection means 2c extends through the insulating component of interior trim parts 1, for example by passing through its thickness, when it is housed in the first face 1a (visible face) to reach a connection point located behind. (reverse side) the interior trim piece 1. In the case where the functional element 2 is housed in the second face 1b (reverse) the elongated connection means 2c can extend directly behind the insulating component of trim pieces 1.

[0037] Preferably, the insulating component of interior trim parts 1 has high acoustic and insulating properties. More particularly, the insulating component of interior trim parts 1 comprises at least one layer of material having such high acoustic and insulating properties. Preferably, said layer of material contains air. Preferably, the material can be made with thermoplastic foam, or based on felt made of a mixture of fibers or with fibers, mixing thermoplastic and other fibers such as natural fibers, textile fibers, or fibers from a recycled textile material (polyester, wool, ... etc.), which can be heated and pressed in a mold (thermocompression).The material may alternatively be made, for example, of plastic resin, preferably with air inside, for example after a chemical or physical expansion reaction obtained after an injection process into a mold.

[0038] According to the present invention, the first face 1a and / or the second face 1b (of the insulating component of interior trim parts 1) comprises, or each comprises, at least one concavity 3 open to the exterior of the insulating component of interior trim parts 1 and the or at least one of the functional element(s) 2 is housed in the or one of the concavities 3 while being fixedly held in the latter.

[0039] Still in accordance with the present invention, the presence of the or each concavity 3 reduces (or, in other words, has the effect of reducing) locally, that is to say at the level of the concavity 3, the thickness of the insulating component of interior trim pieces 1 and / or increases (or, in other words, has the effect of increasing) locally, that is to say at the level of the concavity 3, the density of the insulating component of interior trim pieces 1.

[0040] The expression "and / or" in the characteristic "the presence of the or each concavity 3 locally reduces the thickness of the insulating component of interior trim pieces 1 and / or locally increases the density of the insulating component of interior trim pieces 1" can be replaced by the expressions: "and", "or", "and possibly".

[0041] Still in accordance with the present invention, the or at least one of the functional element(s) 2 is housed in the or one of the concavities 3 while being held fixedly in the latter.

[0042] Concavity 3 means: an arrangement (or part) hollowed towards the inside (of the insulating component of interior trim parts 1), a recess or depression (towards the inside). Such a concavity 3 comprises a bottom 3a.

[0043] Preferably, as can be seen in Figures 1 to 6 and 9 to 10, the bottom 3a of the or at least one of the concavities 3 may be flat (or substantially flat). This characteristic has the effect / advantage of facilitating the positioning of the functional element, ensuring that it is not or is less deformed, and allowing better uniform contact for better effectiveness of effect between the functional element 2 and the insulating component of trim pieces 1.

[0044] Furthermore, preferably, the bottom 3a can extend parallel to the first and second faces 1a, 1b. A thickness of material that is as uniform as possible, as homogeneous as possible, without too many repeated disturbances, for the integrity and the holding of the part, and its homogeneity of behavior can thus be obtained.

[0045] The gap between said first and second faces 1a, 1b defines the thickness of the insulating component of interior trim pieces 1. The gap can be determined in particular between the respective external surfaces of the first and second faces 1a, 1b. The thickness of the insulating component of interior trim pieces 1 may, depending on its shape and structure, not be constant over its entire surface.

[0046] It is understood that the local reduction in the thickness and / or the local increase in the density of the insulating component of interior trim pieces 1 is carried out at the level of the or at least one of the concavities 3, that is to say between the latter, more particularly between the bottom 3a of the latter, and the opposite face (first or second face 1a, 1b of the insulating component of interior trim pieces 1) to that comprising said concavity 3.It is also understood that the local increase in the density of the insulating component of interior trim pieces 1 is an increase in the density of the insulating component of interior trim pieces 1 at the or at least one of the concavities 3, that is to say an increase in the density of the material constituting the insulating component of interior trim pieces 1 and extending between the concavity 3, more particularly between the bottom 3a of the concavity, and the face (first or second face 1a, 1b) opposite that comprising the concavity 3.

[0047] In an embodiment where the second face 1b, i.e. the reverse side of the insulating component of trim pieces 1, comprises the or at least one of the concavities 3 (see in particular figures 1 and 3), the local reduction of the thickness of the insulating component of interior trim pieces 1 at the level of the concavity(ies) 3 makes it possible to improve the transmission or transfer of the function performed by the or each functional element 2 housed in the concavity(ies) 3 of the second face 1b towards and / or through the first face 1a (visible face). The transmission or the transfer of the function may be the transmission or transfer of heat, the transmission of light or the transmission of signals. Where appropriate, the local increase in the density of the insulating component of interior trim parts 1 at the level of the concavity(ies) 3 of the second face 1b also makes it possible to improve the load-bearing capacity and the retention of the functional element(s) 2 housed in the concavity(ies) 3 of the second face 1b of the insulating component of interior trim parts 1. The term “load-bearing capacity” more particularly designates the capabilities for maintaining the rigidity and / or support in the holding of the functional element 2.

[0048] In an embodiment where the first face 1a (visible face) comprises the or at least one of the concavities 3 (see in particular figures 2 and 4), the or each functional element 2, housed in such a concavity 3 of the first face 1a, directly performs the function from the first face 1a towards the outside of the insulating component of interior trim parts 1, that is to say without transfer or transmission through the thickness of the insulating component of interior trim parts 1. The local reduction of the thickness of the insulating component of interior trim parts 1 at the level of the concavity(ies) 3 of the first face 1a makes it possible to reduce the mass of the insulating component of interior trim parts 1.Where appropriate, the local increase in the density of the insulating component of interior trim parts 1 at the level of the concavity(ies) 3 of the first face 1a also makes it possible to improve the load-bearing capacity of the functional element(s) 2 housed in the concavity(ies) 3 of the first face 1a of the insulating component of interior trim parts 1.

[0049] The presence of the concavity(ies) 3 locally reducing the thickness of the insulating component of interior trim parts 1 makes it possible to use the lightweight materials used in current insulating components of interior trim parts 1, while improving the quality of the transmission or transfer of the function(s) performed by the functional element(s) 2.

[0050] Preferably, the or each functional part 2a can be in direct contact with the bottom 3a of the corresponding concavity 3. This characteristic has the effect / advantage of allowing better transfer of the effect of the functional element 2.

[0051] Preferably, as can be seen in [Fig. 10], the or at least one of the functional element(s) 2 can be housed in the corresponding concavity 3 by being embedded in the latter so as to be substantially flush with the edge 3b of the concavity 3. This characteristic has the effect / advantage of allowing better integration and better perceived quality and the functional element 2 is better protected by being less exposed to its surroundings or to users.

[0052] In a particular embodiment of the interior trim part insulating component 1, as can be seen in Figures 1 to 3, it can comprise a substrate Cl forming a layer of material having acoustic and / or insulating properties. The presence of the concavity(ies) 3 then locally reduces the thickness of the substrate Cl and / or locally increases the density of the substrate Cl. Preferably, the substrate Cl may be made either from a thermoplastic foam or from a felt, a non-woven fabric or a mixture of thermoplastic fibers and non-thermoplastic fibers such as natural fibers and / or textile fibers and / or fibers from a recycled textile source. The non-thermoplastic fibers may be, for example, linen, hemp, glass, carbon, textile fibers, polyester, cotton or wool.

[0053] In one variant, the substrate C1 may be made from an injected thermoplastic resin, preferably capable of being chemically expanded, for example through the presence of swelling agents or by physical expansion by direct introduction of gas, for example CO type gas. The substrate C1 may be made from an injected thermoplastic resin. In another variant, the substrate C1 may be made from a thermosetting resin.

[0054] Furthermore, as can be seen in Figures 1 to 3, in a single-layer embodiment in which the interior trim piece insulating component 1 comprises a single layer of material formed by the substrate CL The substrate C1 may then comprise (or integrate) the first and second faces 1a, 1b of the interior trim piece insulating component 1.

[0055] In a multi-layer embodiment of the interior trim part insulating component 1, it may comprise three superimposed layers C1, C2, C3 of material, namely a central (or intermediate) layer formed by the substrate C1, a first covering layer C2 comprising (or integrating) the first face 1a of the interior trim part insulating component 1 and a second covering layer C3 comprising (or integrating) the second face 1b of the interior trim part insulating component 1. The substrate C1 forming the central (or intermediate) layer then extends between the first and second covering layers C2, C3. In another form not illustrated, the interior trim part insulating component 1 may comprise two superimposed layers of material or more than three superimposed layers.

[0056] Preferably, the thickness of the insulating component of interior trim parts 1, where appropriate of the substrate C1, could be provided to decrease locally (at the or each concavity 3) in a range of 10 to 2 mm. The material density at this level of the local reduction in thickness can then increase in the same ratio of 1 to 5. It has in particular been found by the present applicant that a local reduction in thickness of the order of 10 mm is an excellent value for the absorption acoustics and that a local reduction in thickness of the order of 2 mm is an excellent value for thermal conductivity.

[0057] If we now refer to [Fig.9], we can see that the insulating component of interior trim parts 1 comprises locally, preferably outside the zone(s) of lesser thickness and / or greater density, at least one reinforcement and / or stiffening zone 4 having a specific shape, for example in the shape of an omega.

[0058] The present invention also relates to a method for producing an insulating component device for interior trim parts according to the present invention.

[0059] According to the present invention, such a production method consists of:

[0060] - to produce the insulating component of interior trim parts 1 in a mold of compression or injection,

[0061] - to produce in the compression or injection mold the concavity(ies) 3 so as to locally reduce, at the level of the or each or at least one of the concavities 3, the thickness of the insulating component of trim pieces 1 and / or to locally increase, at the level of the or each concavity 3 or at least one of the concavities, the density of the insulating component of interior trim pieces 1,

[0062] - and to house the or at least one of the functional element(s) 2 in the or at least one of the concavity(ies) 3 while holding it fixedly in the latter.

[0063] In a first embodiment of the method, it consists of:

[0064] - to produce the insulating component of interior trim parts 1 in a mold of compression,

[0065] - and to produce in the compression mold the concavity(ies) 3 by pressing locally the layer(s) of material constituting the insulating component of interior trim parts 1 so as to locally reduce the thickness of the insulating component of interior trim parts 1 and to locally increase the density of the insulating component of interior trim parts 1.

[0066] Preferably, in this first embodiment, the method may consist of fixing the or each functional element 2:

[0067] - either by gluing, welding or using mechanical assembly means 5, after molding the insulating component of interior trim parts 1 by compression,

[0068] - either directly by compression in the compression mold, or directly by compression in the compression mold with the aid of mechanical assembly means 5 or with a mechanical bonding or adhesion interface layer.

[0069] In a second embodiment of the method according to the present invention, it may consist of:

[0070] - to produce the insulating component of interior trim parts 1 in a mold injection,

[0071] - and to produce the concavity(ies) 3 by creating the shape of the or each concavity 3 in the injection mold so as to locally reduce the thickness of the insulating component of interior trim parts 1.

[0072] Such a production method in an injection mold may consist of fixing the or each functional element 2:

[0073] - either by gluing, welding or using mechanical assembly means 5, after the molding of the insulating component of interior trim parts 1,

[0074] - either directly by overmolding in the injection mold, or directly by overmolding in the injection mold with a bonding or adhesion interface layer.

[0075] Of course, the invention is not limited to the embodiment described and shown in the attached drawings. Modifications remain possible, in particular from the point of view of the constitution of the various elements or by substitution of technical equivalents, without departing from the scope of protection of the invention.

Claims

Claims

1. Device for insulating component of interior trim parts for a vehicle, said device comprising, on the one hand, an insulating component of interior trim parts (1) made of one or more layers of material and having a three-dimensional shape and two opposite faces (1a, 1b), namely a first face (1a) suitable and intended to form a visible face and a second face (1b) suitable and intended to form the reverse side of the insulating component of interior trim parts (1) and, on the other hand, at least one flat, preferably flexible or supple functional element (2), comprising a functional part (2a) suitable and intended to be or being connected to an electrical energy source and / or to an electronic / electrical device for its activation and / or its operation and a rigid or supple or flexible support (2b), characterized in that the first face (1a) and / or the second face (2a) comprises, or each comprises,at least one concavity (3) open to the outside of the insulating component of interior trim parts (1) and in that the or at least one of the functional element(s) (2) is housed in the or one of the concavities (3) while being held fixedly in the latter, the presence of the or each concavity (3) locally reducing the thickness of the insulating component of interior trim parts (1) and / or locally increasing the density of the insulating component of interior trim parts (1).,

2. An insulating component device for interior trim parts according to claim 1, characterized in that the or each functional part (2a) is in direct contact with the bottom (3a) of the corresponding concavity (3).

3. An insulating component device for interior trim parts according to claim 1 or 2, characterized in that the bottom (3a) of the or at least one of the concavities (3) is flat.

4. An insulating component device for interior trim parts according to any one of claims 1 to 3, characterized in that the or at least one of the functional element(s) (2) is housed in the corresponding concavity (3) by being embedded in the latter so as to be flush with the edge (3b) of the concavity (3).

5. An interior trim part insulating component device according to any one of claims 1 to 4, characterized in that the insulating component of interior trim parts (1) comprises a substrate (Cl) forming a layer of material having acoustic and / or insulating properties and that the presence of the concavity(ies) (3) locally reduces the thickness of the substrate (Cl) and / or locally increases the density of the substrate (Cl).

6. An insulating component device for interior trim parts according to claim 5, characterized in that the substrate (Cl) is made either from a thermoplastic foam, or from a felt, a non-woven fabric or a mixture of thermoplastic fibers and non-thermoplastic fibers such as natural fibers and / or textile fibers and / or fibers from a recycled textile source.

7. An insulating component device for interior trim parts according to claim 5, characterized in that the substrate (Cl) is made from an injected thermoplastic resin.

8. An interior trim part insulating component device according to any one of claims 5 to 7, characterized in that the interior trim part insulating component (1) comprises a single layer of material formed by the substrate (Cl), the substrate (Cl) comprising the first and second faces (la, 1b) of the interior trim part insulating component (1).

9. An interior trim insulating component device according to any one of claims 5 to 7, characterized in that the interior trim insulating component (1) comprises three superimposed layers (C1, C2, C3) of material, namely a central layer formed by the substrate (C1), a first covering layer (C2) comprising the first face (la) of the interior trim insulating component (1) and a second covering layer (C3) comprising the second face (1b) of the interior trim insulating component (1), the substrate (C1) forming the central layer extending between the first and second covering layers (C2, C3).

10. Interior trim part insulating component device according to any one of claims 1 to 9, characterized in that the interior trim part insulating component (1) comprises locally, preferably outside the zone(s) of lesser thickness and / or greater density, at least one reinforcement and / or stiffening zone (4) having a specific shape, for example in the shape of an omega.

11. Method for producing an interior trim insulating component device according to any one of claims 1 to 10, characterized in that it consists of: - producing the interior trim insulating component (1) in a compression or injection mold, - producing the concavity(ies) (3) in the compression or injection mold so as to locally reduce, at the or each or at least one of the concavities (3), the thickness of the interior trim insulating component (1) and / or to locally increase, at the or each concavity (3) or at least one of the concavities, the density of the interior trim insulating component (1), - and housing the or at least one of the functional element(s) (3) in the or at least one of the concavities (3) while holding it fixedly in the latter.

12. Production method according to claim 11, characterized in that it consists of: - producing the insulating component of interior trim pieces (1) in a compression mold, - and producing in the compression mold the concavity(ies) (3) by locally pressing the layer(s) of material constituting the insulating component of interior trim pieces (1) so as to locally reduce the thickness of the insulating component of interior trim pieces (1) and to locally increase the density of the insulating component of interior trim pieces (1).

13. Production method according to claim 12, characterized in that it consists of fixing the or each functional element (2) either by gluing, welding or using mechanical assembly means (5), after molding the insulating component of interior trim parts (1) by compression, either directly by compression in the compression mold or directly by compression in the compression mold with the help of mechanical assembly means (5) or with a mechanical attachment or adhesion interface layer.

14. Production method according to claim 11, characterized in that it consists of: - producing the insulating component of interior trim parts (1) in an injection mold, - and producing the concavity(ies) (3) by creating the shape of the or each concavity (3) in the injection mold so as to locally reduce the thickness of the insulating component of interior trim parts (1).

15. Production method according to claim 14, characterized in that it consists of fixing the or each functional element (2) either by gluing, welding or using mechanical assembly means (5), after molding the insulating component of interior trim parts (1), or directly by overmolding in the injection mold or directly by overmolding in the injection mold with an interface layer for attachment or adhesion.

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