Insulating component device for interior trim parts for vehicles and method of making such a device
By integrating concavities to house functional elements in insulating components, the challenge of efficient function transfer and secure element retention is addressed, enhancing performance and reducing mass in vehicle trim parts.
Patent Information
- Application Number
- FR2024001958
- Authority / Receiving Office
- FR · FR
- Patent Type
- Patents
- Current Assignee / Owner
- Filing Date
- 2024-02-28
- Publication Date
- 2026-02-06
- Estimated Expiration
- 2044-02-28
AI Technical Summary
Insulating components of interior trim parts in vehicles face challenges in efficiently transferring functions like heat, light, or detection signals through high-insulating materials, and maintaining functional elements securely without increasing energy consumption or vehicle mass.
Incorporating concavities in the insulating components to house functional elements, reducing thickness and increasing density locally, allowing better function transfer and improved load-bearing capacity while using lightweight materials.
Enhances function transfer and load-bearing capacity while maintaining low energy consumption and vehicle mass, ensuring secure integration of functional elements.
Smart Images
Figure 00000016_0000 
Figure 00000016_0001 
Figure 00000017_0000
Abstract
Description
Title of the invention: Insulating component device for interior trim parts for vehicles and method of implementing such a device
[0001] The present invention relates to the field of interior trim parts for vehicles and, in particular, to the integration of functions into such trim parts. Its object is a device for an insulating component of interior trim parts and a method for implementing such a device.
[0002] The term vehicle means any motorized land vehicle such as, for example, a motor vehicle.
[0003] The term "interior trim piece" means any trim, covering or lining piece 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 insulating components of interior trim pieces. These insulating components of interior trim pieces each form a part, a sub-part, or the entirety of an interior trim piece and are made of materials having high acoustic and insulating properties.
[0005] Such an insulating component of interior trim pieces consists 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 for and intended to form an apparent face, i.e. a face oriented towards the interior passenger compartment of the vehicle and a second face suitable for and intended to form the reverse of the interior trim piece.
[0006] Furthermore, such an insulating component of interior trim parts comprises at least one thin (or fine) functional element, generally flexible or pliable, enabling the performance of specific functions such as, for example, heating, lighting, detection, reception, and transmission. These functions, thus integrated into the trim parts, make it possible to provide information and comfort enhancement services to users (drivers and / or passengers). The functional elements require a connection to an electrical power source and / or an electronic / electrical device for their activation and / or operation.
[0007] Such a functional element comprises a functional part and a rigid, flexible, or pliable support. The functional part, generally in the form of a wire that conducts electrical current, enables the function to be performed by For example, one of the aforementioned functions. To this end, the functional part is connected to an electrical power source and / or an electronic / electrical device for its activation and / or operation. The support provides stability, support, and / or cohesion to the functional part. The support is generally made of a textile (non-woven, felt, woven, knitted), a film, a leather, or a plastic or metallic layer. The support is generally deformable to adapt to the vehicle's trim piece.
[0008] 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 allow, in the direction of their thickness, the transfer or transmission of function—for example, the transmission or transfer of heat, light, or detection signals—to and / or through the opposite visible face. This problem is particularly relevant to 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 need to be significant to pass through the insulating component of the interior trim parts, which would run counter to the currently desired control or reduction of energy consumption in vehicles. Another solution would be to replace the materials of the insulating components of the interior trim parts with other materials allowing for better transmission or transfer. However, these materials are generally lightweight, with little rigidity, and do not need to be reinforced because they do not create noise during vibrations in the vehicle.Replacing them with other, more rigid and heavier materials, allowing for better energy or signal transfer or transmission, would require modifying the fastening system to limit noise during vehicle vibrations, which would impair their primary insulating quality and increase the complexity and cost of fastening the interior trim piece in the vehicle and significantly 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 retention 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 apparent 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 vehicles, said device comprising, on the one hand, a component of interior trim parts consisting of one or more layers of material and having a three-dimensional shape and two opposing faces, namely a first face suitable for forming an apparent face and a second face suitable for forming the reverse side of the insulating component of interior trim parts and, on the other hand, at least one thin and / or flat functional element, preferably flexible, comprising a functional part suitable for being or being connected to an electrical power source and / or an electronic / electrical device for its activation and / or operation and a rigid 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 outside of the insulating component of the interior trim pieces, and in that the functional element(s) is housed in the concavity(ies) and held fixedly therein, the presence of the concavity(ies) locally reducing the thickness of the insulating component of the interior trim pieces and / or locally increasing the density of the insulating component of the interior trim pieces.
[0013] The present invention also relates to a method for making 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 be made in the compression or injection mold the concavity(ies) of so as to locally reduce, at the level of the concavity(ies), the thickness of the insulating component of the interior trim pieces and / or to locally increase, at the level of the concavity(ies), the density of the insulating component of the interior trim pieces,
[0016] - and to house the or at least one of the functional element(s) in the or at least one of the concavities by holding it fixedly 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 accompanying 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 on the reverse side of the insulating component of the 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 visible face of the insulating component of interior trim parts,
[0020] [Fig.3] shows the insulating component of the inner trim parts of the device insulating component of interior trim parts shown in [Fig. 1] 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 an insulating component of multilayer interior trim pieces and a functional element located in a concavity of the reverse side of said insulating component of multilayer interior trim pieces,
[0022] [Fig. 5] is a cross-sectional view of an insulating component device of interior trim pieces according to the present invention with an insulating component of multilayer interior trim pieces and a functional element located in a concavity of the apparent face of the insulating component of multilayer interior trim pieces,
[0023] [Fig.6] shows the insulating component of the inner trim parts of the device insulating component of interior trim piece shown in [Fig. 4] or 5, without the functional element,
[0024] [Fig.7] is a cross-sectional view 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 insulating component device for interior trim parts according to the present invention in another embodiment.
[0028] The accompanying figures show an insulating component device for interior trim parts for vehicles, 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 opposing faces la, 1b, namely a first face la suitable for and intended to form an apparent face of the insulating component of interior trim parts and a second face 1b suitable for and intended to form the reverse of the insulating component of interior trim parts 1,
[0030] - and at least one functional element 2 thin (or fine) and / or flat, preferably flexible or pliable, comprising a functional part 2a suitable and intended to be or being connected to an electrical power source and / or to an electronic / electrical device for its activation and / or operation and a rigid or flexible 2b support.
[0031] The term "apparent face" (first face la) 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 insulating component of interior trim parts 1 is understood to mean a part, a subpart, or the entirety of an interior trim (or lining or trim) part located or integrated into 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, and headliner panels. Preferably, such an insulating component of interior trim parts 1 according to the present invention can be designed to be mounted under the vehicle's dashboard on the driver's side or under the glove box area on the passenger's side.
[0033] Preferably, the support 2b of the functional element 2(s) can be a textile support (non-woven, felt, woven, knitted), a film, a skin, or a plastic layer. Preferably, such a support 2b can be deformable. The function of such a support 2b is to support and / or protect and / or secure 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 of a shock-resistant and / or shock-absorbing material. Such a support 2b may be, for example, a plastic film, a plastic sheet, or a reinforcing fabric.
[0035] The or each functional element 2, by virtue of its functional part 2a, can perform different functions such as for example: lighting, heating or detection.
[0036] Referring to [Fig. 8], it can be seen that, to enable its connection to an electrical power source and / or an electronic / electrical device, the functional element(s) 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 power source and / or an electronic / electrical device. The elongated connection means 2c thus allows the functional part 2a of the functional element 2 to be extended, preferably continuously (i.e., without electrical discontinuity due, for example, to a connection or electrical wiring), to enable its power 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 pieces 1, for example by passing through its thickness, when it is housed in the first face la (visible face) to join a connection point located behind. (reverse side) the inner trim piece 1. In the case where the functional element 2 is housed in the second face 1b (reverse) the elongated connecting means 2c can extend directly behind the insulating component of trim pieces 1.
[0037] Preferably, the insulating component of interior trim pieces 1 has high acoustic and insulating properties. More particularly, the insulating component of interior trim pieces 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 of thermoplastic foam, or felt-based, consisting of a mixture of fibers or fibers, mixing thermoplastic and other fibers such as natural fibers, textile fibers, or fibers from recycled textile material (polyester, wool, etc.), which can be heated and pressed in a mold (thermocompression).The material can, in one variant, be made, for example, with plastic resin, preferably with air inside, for example after a chemical or physical expansion reaction obtained after an injection process in a mold.
[0038] According to the present invention, the first face 1 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 outside 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 concavity(ies) 3 by being held fixedly in the latter.
[0039] 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, i.e. at the level of the concavity 3, the thickness of the insulating component of the inner trim pieces 1 and / or increases (or, in other words, has the effect of increasing) locally, i.e. at the level of the concavity 3, the density of the insulating component of the inner trim pieces 1.
[0040] The expression "and / or" in the feature "the presence of the or each concavity 3 locally reduces the thickness of the insulating component of inner trim pieces 1 and / or locally increases the density of the insulating component of inner trim pieces 1" can be replaced by the expressions: "and", "or", "and possibly".
[0041] 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 and is held fixedly in the latter.
[0042] Concavity 3 is understood to mean: a recess (or part thereof) facing inwards (of the insulating component of interior trim pieces 1), a recess or indentation (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 feature has the effect / advantage of facilitating the installation of the functional element, ensuring that it is not or is less deformed, and allowing for better uniform contact for improved effectiveness between the functional element 2 and the insulating component of the trim pieces 1.
[0044] In addition, preferably, the base 3a can extend parallel to the first and second faces la, 1b. A material thickness that is as uniform as possible, as homogeneous as possible, without too many repeated disturbances, for the integrity and strength of the part, and its homogeneity of behavior can thus be obtained.
[0045] The gap between said first and second faces la, 1b defines the thickness of the insulating component of inner trim pieces 1. The gap can be determined in particular between the respective external surfaces of the first and second faces la, 1b. The thickness of the insulating component of inner 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 thickness and / or the local increase in density of the insulating component of the interior trim pieces 1 is carried out at the level of the or at least one of the concavity(ies) 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 la, 1b of the insulating component of the 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 the interior trim pieces 1 is an increase in the density of the insulating component of the interior trim pieces 1 at the level of the or at least one of the concavity(ies) 3, that is to say an increase in the density of the material constituting the insulating component of the 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 la, 1b) opposite to that comprising the concavity 3. .
[0047] In an embodiment where the second face 1b, i.e., the reverse side of the insulating component of the trim pieces 1, comprises one or at least one of the concavities 3 (see in particular Figures 1 and 3), the local reduction in the thickness of the insulating component of the inner trim pieces 1 at the level of the concavity(ies) 3 improves the transmission or transfer of the function performed by the functional element 2 housed in the concavity(ies) 3 of the second face 1b to and / or through the first face (the visible face). The transmission or the function transfer may be the transmission or transfer of heat, light transmission, or signal transmission. Where applicable, the local increase in the density of the insulating component of the inner trim pieces 1 at the concavity(ies) 3 of the second face 1b further improves the load-bearing capacity and support of the functional element(s) 2 housed in the concavity(ies) 3 of the second face 1b of the insulating component of the inner trim pieces 1. The term "load-bearing capacity" refers more specifically to the ability to maintain rigidity and / or support the functional element 2.
[0048] In an embodiment where the first face la (apparent face) includes the or at least one of the concavity(ies) 3 (see in particular Figures 2 and 4), the or each functional element 2, housed in such a concavity 3 of the first face la, directly performs the function from the first face la to the outside of the insulating component of the interior trim parts 1, that is to say without transfer or transmission through the thickness of the insulating component of the interior trim parts 1. The local reduction of the thickness of the insulating component of the interior trim parts 1 at the level of the concavity(ies) 3 of the first face la makes it possible to reduce the mass of the insulating component of the interior trim parts 1.Where appropriate, the local increase in the density of the insulating component of the interior trim pieces 1 at the level of the concavity(ies) 3 of the first face la also allows to improve the load-bearing capacity of the functional element(s) 2 housed in the concavity(ies) 3 of the first face la of the insulating component of the interior trim pieces 1. .
[0049] The presence of the concavity or concavities 3 locally reducing the thickness of the insulating component of interior trim parts 1 allows the use of the lightweight materials used in the current insulating components of interior trim parts 1, while improving the quality of the transmission or transfer of the function or functions performed by the functional element(s) 2.
[0050] Preferably, the functional part or parts 2a can be in direct contact with the bottom 3a of the corresponding concavity 3. This feature 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 feature has the effect / advantage of allowing better integration and a 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 insulating component of interior trim parts 1, as can be seen in Figures 1 to 3, this component may The substrate Cl comprises a layer of material with 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 its density. Preferably, the substrate Cl can be made from either a thermoplastic foam or from felt, a non-woven material, or a mixture of thermoplastic and non-thermoplastic fibers such as natural fibers and / or textile fibers and / or fibers from a recycled textile source. Non-thermoplastic fibers can be, for example, flax, hemp, glass, carbon, textile fibers, polyester, cotton, or wool.
[0053] In one embodiment, the substrate Cl can be made from an injected thermoplastic resin, preferably one that can be chemically expanded, for example by the presence of blowing agents, or by physical expansion through the direct introduction of gas, for example, CO2. The substrate Cl can be made from an injected thermoplastic resin. In another embodiment, the substrate Cl can 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 insulating component of the inner trim pieces 1 comprises a single layer of material formed by the substrate CL, the substrate Cl can then include (or integrate) the first and second faces la, 1b of the insulating component of the inner trim pieces 1.
[0055] In a multilayer embodiment of the insulating component of interior trim pieces 1, the latter may comprise three superimposed layers Cl, C2, C3 of material, namely a central (or intermediate) layer formed by the substrate Cl, a first overlay layer C2 comprising (or incorporating) the first face 1a of the insulating component of interior trim pieces 1, and a second overlay layer C3 comprising (or incorporating) the second face 1b of the insulating component of interior trim pieces 1. The substrate Cl forming the central (or intermediate) layer then extends between the first and second overlay layers C2, C3. In another embodiment not shown, the insulating component of interior trim pieces 1 may comprise two superimposed layers of material or more than three superimposed layers.
[0056] Preferably, the thickness of the insulating component of the inner lining parts 1, and where applicable, of the substrate Cl, could be designed to decrease locally (at the level of the or each concavity 3) within a range of 10 to 2 mm. The material density at this point of local thickness reduction can then increase in the same ratio of 1 to 5. In particular, the present applicant has found that a local thickness reduction of approximately 10 mm is an excellent value for 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 the inner trim pieces 1 includes locally, preferably outside the area(s) of lesser thickness and / or greater density, at least one reinforcement and / or stiffening area 4 having a specific shape, for example in the shape of an omega.
[0058] The present invention also relates to a method for making an insulating component device for interior trim parts according to the present invention.
[0059] In accordance with the present invention, such a method of implementation consists of:
[0060] - to produce the insulating component of interior trim parts 1 in a mold of compression or injection,
[0061] - to be made 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 the 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 the inner 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 3 concavities by holding it fixedly in the latter.
[0063] In a first embodiment of the process, it consists of:
[0064] - to produce the insulating component of interior trim parts 1 in a mold of compression,
[0065] - and to create 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 functional element(s) 2:
[0067] - either by gluing, welding or using mechanical assembly means 5, after the molding of 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 attachment or adhesion interface layer.
[0069] In a second embodiment of the process 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 create the concavity(ies) 3 by creating the shape of the concavity or each concavity 3 in the injection mold so as to locally reduce the thickness of the insulating component of inner trim parts 1.
[0072] Such a manufacturing process in an injection mold may consist of fixing the functional element(s) 2:
[0073] - either by gluing, welding or using mechanical assembly means 5, after 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 tack or adhesion interface layer.
[0075] Of course, the invention is not limited to the embodiment described and shown in the accompanying drawings. Modifications remain possible, particularly with regard to the composition of the various elements or by substitution of technical equivalents, without departing from the scope of protection of the invention.
Claims
Demands
1. A vehicle interior trim insulating component device, said device comprising, on the one hand, an interior trim insulating component (1) made of one or more layers of material and having a three-dimensional shape and two opposing faces (1a, 1b), namely a first face (1a) suitable for and intended to form an apparent face and a second face (1b) suitable for and intended to form the reverse side of the interior trim insulating component (1), and, on the other hand, at least one flat functional element (2), preferably flexible, comprising a functional part (2a) suitable for and intended to be or being connected to an electrical power source and / or an electronic / electrical device for its activation and / or operation, and a rigid or flexible support (2b), characterized in that the first face (1a) and / or the second face (2a) comprises, or each comprise,at least one concavity (3) open to the outside of the insulating component of the 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) by being fixedly held therein, the presence of the or each concavity (3) locally reducing the thickness of the insulating component of the interior trim parts (1) and / or locally increasing the density of the insulating component of the interior trim parts (1).
2. 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. 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 concavity(ies) (3) is flat.
4. 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. Insulating component device for interior trim parts according to any one of claims 1 to 4, characterized in that the insulating component of interior trim pieces (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. 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 or a mixture of thermoplastic and non-thermoplastic fibers such as natural fibers and / or textile fibers and / or fibers from a recycled textile source.
7. 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. Insulating component device for interior trim parts according to any one of claims 5 to 7, characterized in that the insulating component for interior trim parts (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 insulating component for interior trim parts (1).
9. Insulating component device for interior trim parts according to any one of claims 5 to 7, characterized in that the insulating component for interior trim parts (1) comprises three superimposed layers (Cl, C2, C3) of material, namely a central layer formed by the substrate (Cl), a first cover layer (C2) comprising the first face (1a) of the insulating component for interior trim parts (1) and a second cover layer (C3) comprising the second face (1b) of the insulating component for interior trim parts (1), the substrate (Cl) forming the central layer extending between the first and second cover layers (C2, C3).
10. An insulating component device for interior trim parts according to any one of claims 1 to 9, characterized in that the insulating component for interior trim parts (1) locally comprises, preferably outside the area(s) of least thickness and / or highest density, at least one reinforcement and / or stiffening zone (4) having a specific shape, for example omega shape.
11. A method for making an insulating component device for interior trim parts according to any one of claims 1 to 10, characterized in that it consists of: - making the insulating component for interior trim parts (1) in a compression or injection mold, - making 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 for interior trim parts (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 for interior trim parts (1), - and housing the or at least one of the functional element(s) (3) in the or at least one of the concavities (3) by holding it fixedly in the latter.
12. A method of embodiment 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. Method of embodiment according to claim 12, characterized in that it consists of fixing the or each functional element (2) either by bonding, welding or with the aid of mechanical assembly means (5), after molding the insulating component of inner lining parts (1) by compression, 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 attachment or adhesion interface layer.
14. Method of embodiment 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. Method of embodiment according to claim 14, characterized in that it consists of fixing the or each functional element (2) either by gluing, welding or by means of mechanical assembly means (5), after molding the insulating component of inner trim parts (1), either directly by overmolding in the injection mold or directly by overmolding in the injection mold with an interface layer for attachment or adhesion.