Inner core, carbon fiber vehicle body assembly and vehicle

Abstract

The utility model discloses an inner core, a carbon fiber vehicle body assembly and a vehicle. The inner core is used for the carbon fiber vehicle body assembly, the carbon fiber vehicle body assembly comprises a carbon fiber layer and an inner core, the carbon fiber layer is suitable for wrapping the outer side of the inner core, the inner core comprises a foaming body and a reinforcing part, the reinforcing part is fixedly connected with the foaming body, and the rigidity of the reinforcing part is larger than that of the foaming body. The inner core is used for filling the through cavity of the carbon fiber layer of the carbon fiber vehicle body assembly to block propagation of noise and vibration, so that the NVH performance is improved, the reinforcing piece is used for supporting the carbon fiber layer, the risks of deformation and breakage of the carbon fiber layer are reduced, and the collision and impact resistance of the carbon fiber vehicle body assembly is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicles, in particular to an inner core, a carbon fiber body component and a vehicle. Background Art

[0002] In the related art, the vehicle body can use carbon fiber parts to achieve lightweight of the vehicle, but the interior of the carbon fiber parts usually has a through cavity, which will expand the propagation range of noise and cause the NVH (Noise, Vibration, Harshness) performance of the vehicle body to be poor. In addition, the stiffness of the carbon fiber parts is consistent everywhere. When the vehicle body is subjected to a collision impact with a small collision surface (such as a pillar collision), the carbon fiber parts are prone to deformation or breakage at the collision site. Utility Model Content

[0003] The utility model aims to solve at least one of the above-mentioned technical problems in the prior art to a certain extent. To this end, the utility model provides an inner core that is conducive to improving the NVH performance and anti-collision impact capability of carbon fiber body components.

[0004] The utility model also provides a carbon fiber vehicle body component with the inner core.

[0005] The utility model also provides a vehicle with the carbon fiber body component.

[0006] According to the inner core for a carbon fiber body component of an embodiment of the utility model, the carbon fiber body component includes a carbon fiber layer and the inner core, the carbon fiber layer is suitable for being coated on the outside of the inner core, and the inner core includes: a foam body and a reinforcement, the reinforcement is fixedly connected to the foam body, and the stiffness of the reinforcement is greater than the stiffness of the foam body.

[0007] According to the inner core for a carbon fiber body component in an embodiment of the utility model, the inner core is used to fill the through cavity of the carbon fiber layer of the carbon fiber body component to block the propagation of noise and vibration, which is beneficial to improving the NVH performance. The reinforcement of the inner core is used to support the carbon fiber layer, which is beneficial to reduce the risk of deformation and fracture of the carbon fiber layer and improve the collision and impact resistance of the carbon fiber body component.

[0008] According to some embodiments of the present invention, the foam body is constructed as a closed and solid foam structure.

[0009] According to some embodiments of the present invention, the reinforcement member is disposed inside the foam body.

[0010] According to some embodiments of the present invention, the foam body includes a first foam sub-body and a second foam sub-body, and the reinforcement is connected between the first foam sub-body and the second foam sub-body.

[0011] According to some embodiments of the present invention, the reinforcement member is a steel member, an aluminum member, or a polymer member.

[0012] According to some embodiments of the utility model, the inner core further includes a sheet metal component, and the sheet metal component is fixedly connected to the foam body.

[0013] According to some embodiments of the utility model, the inner core further includes a mounting nut, and the mounting nut is fixedly connected to the foam body.

[0014] According to another embodiment of the present invention, a carbon fiber vehicle body component includes: an inner core and a carbon fiber layer, wherein the inner core is the inner core described above; and the carbon fiber layer is coated on the outer side of the inner core.

[0015] According to the carbon fiber body component of the embodiment of the utility model, the inner core is used to fill the through cavity of the carbon fiber layer of the carbon fiber body component to block the propagation of noise and vibration, which is beneficial to improving the NVH performance. The reinforcement of the inner core is used to support the carbon fiber layer, which is beneficial to reduce the risk of deformation and breakage of the carbon fiber layer and improve the collision and impact resistance of the carbon fiber body component.

[0016] According to some embodiments of the present invention, the carbon fiber body component is a rocker beam.

[0017] A vehicle according to another embodiment of the present invention includes the above-mentioned carbon fiber body assembly.

[0018] According to the vehicle of the embodiment of the utility model, the inner core is used to fill the through cavity of the carbon fiber layer of the carbon fiber body component to block the propagation of noise and vibration, which is beneficial to improving the NVH performance. The reinforcement of the inner core is used to support the carbon fiber layer, which is beneficial to reduce the risk of deformation and breakage of the carbon fiber layer and improve the collision and impact resistance of the carbon fiber body component and the vehicle.

[0019] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a three-dimensional diagram of an inner core according to an embodiment of the utility model;

[0021] Figure 2 yes Figure 1 A magnified view at point A;

[0022] Figure 3 It is a three-dimensional diagram of the inner core and the process insert according to the utility model.

[0023] Reference numerals:

[0024] Foam body 1; first foam sub-body 11; second foam sub-body 12; reinforcement 2; sheet metal part 3; mounting nut 4; inner core 10; process bolt 20; process insert 30. DETAILED DESCRIPTION

[0025] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0026] In the description of the present invention, it should be understood that the terms "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0027] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0028] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or can communicate with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] Combine the following Figure 1-Figure 3 The inner core 10 , the carbon fiber body component and the vehicle according to the embodiments of the present invention are described in detail.

[0030] Reference Figure 1As shown, according to the inner core 10 for a carbon fiber body component according to an embodiment of the utility model, the carbon fiber body component includes a carbon fiber layer and an inner core 10, the carbon fiber layer is suitable for being coated on the outside of the inner core 10, the inner core 10 includes: a foam body 1 and a reinforcement 2, the reinforcement 2 is fixedly connected to the foam body 1, and the stiffness of the reinforcement 2 is greater than the stiffness of the foam body 1, and the inner core 10 is suitable for filling the through cavity in the carbon fiber layer, which is beneficial to blocking the propagation of noise and vibration and improving the NVH performance of the carbon fiber body component.

[0031] It is understandable that the reinforcement 2 can improve the local stiffness of the inner core 10. When the carbon fiber body component is subjected to a collision impact at the position corresponding to the reinforcement 2, the collision force can be transmitted from the carbon fiber layer to the reinforcement 2 of the inner core 10. The reinforcement 2 has a high stiffness and can effectively bear the collision force and reliably support the carbon fiber layer, thereby helping to reduce the risk of deformation and fracture of the carbon fiber layer and improve the anti-collision ability of the carbon fiber body component. In addition, the foam 1 has good energy absorption performance and can absorb the collision force transmitted from the carbon fiber layer to the inner core 10, thereby helping to further reduce the risk of deformation and fracture of the carbon fiber layer and improve the anti-collision impact ability of the carbon fiber body component.

[0032] According to the inner core 10 for a carbon fiber body component in an embodiment of the utility model, the inner core 10 is used to fill the through cavity of the carbon fiber layer of the carbon fiber body component to block the propagation of noise and vibration, thereby helping to improve the NVH performance of the carbon fiber body component. The reinforcement 2 of the inner core 10 is used to support the carbon fiber layer, thereby helping to reduce the risk of deformation and fracture of the carbon fiber layer and improve the collision and impact resistance of the carbon fiber body component.

[0033] In some embodiments of the present invention, the foam body 1 is constructed as a closed and solid foam structure, which can effectively block the propagation of noise and vibration, thereby helping to improve the NVH performance of the carbon fiber body components. In addition, the foam body 1 with a closed and solid foam structure has good structural stability, which is helpful to improve the stiffness of the inner core 10 and enhance the collision and impact resistance of the carbon fiber body components.

[0034] It should be noted that when manufacturing the carbon fiber body assembly, the inner core 10 can first be integrally formed by in-mold foaming, and then a carbon fiber layer is covered on the outside of the inner core 10, and finally structural adhesive is injected between the carbon fiber layer and the inner core 10 by the vacuum bag method, so that the carbon fiber layer and the inner core 10 are formed into an integrated component. Among them, when the structural adhesive is injected between the carbon fiber layer and the inner core 10 by the vacuum bag method, the foam body 1 with a closed and solid foam structure can effectively prevent the structural adhesive from entering the foam body 1, so as to prevent the weight of the carbon fiber body assembly from increasing, thereby facilitating the lightweight design of the carbon fiber body assembly.

[0035] In some embodiments of the present invention, the material of the foam body 1 may be PMI (polymethacrylimide). The foam body 1 made of PMI has good mechanical properties, fatigue properties and temperature resistance. The foam body 1 is a high-performance hard foam, which is beneficial to improving the rigidity of the inner core 10 and the anti-collision and impact ability of the carbon fiber body component. In addition, the PMI material has a low density and light weight, which can realize a lightweight design of the foam body 1.

[0036] In some embodiments of the utility model, the reinforcement 2 is arranged inside the foam body 1, and the foam body 1 and the reinforcement 2 can be integrally formed by in-mold foaming in the same foaming mold, which is beneficial to simplify the production process of the inner core 10, reduce the difficulty of assembling the foam body 1 and the reinforcement 2, and improve the production efficiency of the inner core 10.

[0037] In other embodiments of the present invention, the foam body 1 includes a first foam sub-body 11 and a second foam sub-body 12, and the reinforcement 2 is connected between the first foam sub-body 11 and the second foam sub-body 12. The first foam sub-body 11 and the second foam sub-body 12 can be processed separately. The first foam sub-body 11 and the second foam sub-body 12 are small in size and easy to process, which is conducive to reducing the difficulty of manufacturing the inner core 10. Among them, the reinforcement 2 can be connected between the first foam sub-body 11 and the second foam sub-body 12 by bonding, fastener connection, etc.

[0038] In some embodiments of the present invention, the reinforcement 2 is a steel part, an aluminum part, or a polymer part. The reinforcement 2 of the steel part, the aluminum part, or the polymer part has high rigidity, and the reinforcement 2 can reliably support the carbon fiber layer, thereby further reducing the risk of deformation and fracture of the carbon fiber body component and improving the anti-collision impact capability of the carbon fiber body component. Among them, the reinforcement 2 can be made of stainless steel, cast aluminum, polyphenylene sulfide (PPS), etc.

[0039] In some embodiments of the present invention, the inner core 10 also includes a sheet metal part 3, which is fixedly connected to the foam body 1. The sheet metal part 3 can enhance the local stiffness of the inner core 10, thereby reducing the risk of deformation and fracture of the carbon fiber body components when subjected to collision impact.

[0040] Specifically, the sheet metal part 3 may be implanted with a fixing nut, which may be used to connect other structures of the vehicle, for example, the fixing nut may be used to connect the rear panel of the vehicle. The sheet metal part 3 may be placed in the foaming mold as an insert and integrally formed with the foam body 1, thereby simplifying the production process of the inner core 10, reducing the difficulty of assembling the foam body 1 and the sheet metal part 3, and improving the production efficiency of the inner core 10.

[0041] In some embodiments of the utility model, the inner core 10 further includes a mounting nut 4, which is fixedly connected to the foam body 1. The mounting nut 4 can be used to connect other structures of the vehicle, for example, the mounting nut 4 can be used to connect the front panel of the vehicle.

[0042] It should be noted that the foam body 1 can be formed by in-mold foaming. Before the foam body 1 is in-mold foaming, the process bolt 20 can be screwed into the threaded hole of the mounting nut 4. During the in-mold foaming of the foam body 1, the process bolt 20 can prevent the foam substrate used to form the foam body 1 from entering the threaded hole of the mounting nut 4, so as to solve the problem of the threaded hole of the mounting nut 4 being filled and contaminated by the foam substrate, thereby avoiding affecting the subsequent assembly of the carbon fiber body component and other vehicle structures. After the foam body 1 is demoulded, the process bolt 20 can be removed to facilitate the connection of the carbon fiber body component with other vehicle structures through the mounting nut 4.

[0043] In addition, when the axial direction of the mounting nut 4 ( Figure 3 b direction) and the demoulding direction of the foam 1 ( Figure 3 When the mounting nut 4 and the process bolt 20 are not consistent, a process insert 30 can be added between the mounting nut 4 and the foaming mold. During the demolding process of the foam body 1, the process insert 30 can prevent the mounting nut 4 and the process bolt 20 from getting stuck in the foaming mold, so that the foam body 1 can be demolded smoothly, which is beneficial to the production of the inner core 10. After the foam body 1 is demolded, the process insert 30 can be removed to facilitate the removal of the process bolt 20. Among them, the outer surface of the process insert 30 is sprayed with a release agent to facilitate the separation of the process insert 30 from the foam body 1.

[0044] In the related art, carbon fiber body components usually add cavity partitions to improve NVH performance, and the manufacturing of carbon fiber body components is difficult. According to the inner core 10 for carbon fiber body components of the embodiment of the utility model, the inner core 10 can form an ultra-light core of the carbon fiber body component. The inner core 10 is used to fill the through cavity inside the carbon fiber layer to block the propagation of noise and vibration. The inner core 10 can replace the original cavity partition and improve the NVH performance of the carbon fiber body component. The main body of the inner core 10 is a foam body 1 with a closed and solid foam structure. The foam body 1 partially embeds a reinforcement 2, a sheet metal part 3 and a mounting nut 4. The foam body 1 can be integrally formed with the implant (embedded reinforcement 2, sheet metal part 3 and mounting nut 4) through in-mold foaming, and the overall rigidity of the inner core 10 is high.

[0045] According to another embodiment of the utility model, a carbon fiber body component includes: an inner core 10 and a carbon fiber layer, the inner core 10 is the inner core 10 of the above embodiment, the carbon fiber layer is coated on the outside of the inner core 10, and the inner core 10 is suitable for filling the cavity in the carbon fiber layer to block the propagation of noise and vibration, thereby facilitating the improvement of the NVH performance of the carbon fiber body component.

[0046] According to the carbon fiber body component of the embodiment of the utility model, the inner core 10 is used to fill the through cavity of the carbon fiber layer of the carbon fiber body component to block the propagation of noise and vibration, which is beneficial to improving the NVH performance. The reinforcement 2 of the inner core 10 is used to support the carbon fiber layer, which is beneficial to reduce the risk of deformation and breakage of the carbon fiber layer and improve the collision and impact resistance of the carbon fiber body component.

[0047] In some embodiments of the present invention, the carbon fiber body component is a sill beam, which is a part of the body side assembly. Sill beams are provided on both sides of the vehicle. When the sill beam is hit by a pillar, the reinforcement 2 of the inner core 10 thereof can reliably support the carbon fiber layer of the outer layer of the sill beam, which in turn helps to reduce the risk of deformation and breakage of the sill beam, and further helps to improve the sill beam's ability to resist pillar impact.

[0048] It should be noted that carbon fiber body components can also be used in other locations of the body, such as roof side beams, front panels, rear panels, etc.

[0049] According to the carbon fiber body assembly of the embodiment of the utility model, when manufacturing the carbon fiber body assembly, the foaming substrate and the implant can be placed in the mold together through in-mold foaming to form an integral body, that is, the inner core 10, and then the carbon fiber cloth is covered on the outer surface of the inner core 10 to obtain a preform, and finally the vacuum bag is set on the outer side of the preform, and the inside of the vacuum bag is evacuated and glue is injected to form a carbon fiber layer on the outer side of the inner core 10. The carbon fiber layer is manufactured and formed on the outer side of the inner core by the vacuum bag process, without the need for a molding mold, and the manufacturing is simple, which is conducive to reducing the processing difficulty of the carbon fiber body assembly. Among them, the carbon fiber cloth is wrapped on the outer surface of the inner core 10, and avoids the positions of the sheet metal 3, the nut 4, etc., so that the carbon fiber body assembly can be connected to other structures of the vehicle through the sheet metal 3 and the nut 4. In addition, the inner core 10 in the carbon fiber layer is not removed, and the inner core 10 can improve the overall stiffness of the carbon fiber body assembly, thereby helping to improve the collision performance of the carbon fiber body assembly, and the reinforcement 2 of the inner core 10 can strengthen the local stiffness of the inner core 10, realizing the concept of segmented stiffness reinforcement of the carbon fiber body assembly, which is helpful to improve the anti-pillar collision performance of the carbon fiber body assembly.

[0050] A vehicle according to another embodiment of the present invention includes the above-mentioned carbon fiber body assembly.

[0051] According to the vehicle of the embodiment of the utility model, the inner core 10 is used to fill the through cavity of the carbon fiber layer of the carbon fiber body component to block the propagation of noise and vibration, which is beneficial to improving the NVH performance. The reinforcement 2 of the inner core 10 is used to support the carbon fiber layer, which is beneficial to reduce the risk of deformation and breakage of the carbon fiber layer and improve the collision and impact resistance of the carbon fiber body component and the vehicle.

[0052] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification.

[0053] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. An inner core for a carbon fiber body component, characterized in that: The carbon fiber vehicle body component comprises a carbon fiber layer and an inner core (10), wherein the carbon fiber layer is suitable for covering the outer side of the inner core (10), and the inner core (10) comprises: a foam body (1) and a reinforcing member (2), wherein the reinforcing member (2) is fixedly connected to the foam body (1), and the stiffness of the reinforcing member (2) is greater than the stiffness of the foam body (1), and the foam body (1) and the reinforcing member (2) are integrally formed by in-mold foaming in the same foaming mold, and the foam body (1) is constructed as a closed and solid foam structure.

2. The inner core for carbon fiber body components according to claim 1, characterized in that: The reinforcing member (2) is arranged inside the foam body (1).

3. The inner core for carbon fiber body components according to claim 1, characterized in that: The foam body (1) comprises a first foam sub-body (11) and a second foam sub-body (12), and the reinforcement member (2) is connected between the first foam sub-body (11) and the second foam sub-body (12).

4. The inner core for a carbon fiber body component according to claim 1, characterized in that: The reinforcing member (2) is a steel member, an aluminum member or a polymer member.

5. The inner core for carbon fiber body components according to claim 1, characterized in that: The inner core (10) further comprises a sheet metal component (3), wherein the sheet metal component (3) is fixedly connected to the foam body (1).

6. The inner core for a carbon fiber vehicle body component according to claim 1, characterized in that: The inner core (10) further comprises a mounting nut (4), wherein the mounting nut (4) is fixedly connected to the foam body (1).

7. A carbon fiber body component, characterized in that: include: An inner core (10), wherein the inner core (10) is the inner core (10) according to any one of claims 1 to 6; A carbon fiber layer is coated on the outside of the inner core (10).

8. The carbon fiber body component according to claim 7, characterized in that: The carbon fiber body component is a rocker beam.

9. A vehicle, characterized in that: Comprising a carbon fiber body component according to claim 7 or 8.

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