Carbon fiber trunk lid and vehicle

Abstract

The utility model discloses a carbon fiber trunk lid and a vehicle, and belongs to the technical field of automobile parts, the carbon fiber trunk lid comprises a trunk lid, the upper part of the trunk lid is provided with an exterior trimming cover plate mounting hole; the exterior trim cover plate comprises an exterior trim cover plate outer plate and an exterior trim cover plate inner plate, the exterior trim cover plate outer plate is fixedly connected to the outer side face of the exterior trim cover plate inner plate, first lightening holes are formed in the exterior trim cover plate inner plate, and a foam layer is arranged on the inner side face of the exterior trim cover plate inner plate; the inner side face of the outer decorative cover plate inner plate is detachably installed on the upper portion of the trunk cover through the outer decorative cover plate installation holes. The outer decorative cover plate is additionally arranged on the upper portion of the trunk lid outer plate made of the carbon fiber material, the trunk lid outer plate made of the carbon fiber material can be protected, the trunk lid outer plate made of the carbon fiber material is prevented from being damaged by flying sharp objects in the driving process, and the trunk lid outer plate made of the carbon fiber material can be prevented from being damaged when the trunk lid outer plate made of the carbon fiber material cannot keep the original strength. And a certain reinforcing effect is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile parts, in particular to a carbon fiber trunk cover and a vehicle. Background Art

[0002] The traditional sheet metal trunk lid assembly structure consists of a trunk lid outer panel, a taillight mounting plate, a lower trunk lid outer panel, a trunk lid inner panel, left / right trunk lid vibration damping brackets, a trunk lid lock reinforcement plate, a left / right trunk lid connecting plate, and a left / right trunk lid reinforcement plate. This is heavy, has many parts, and results in high mold costs. With the popularity of electric vehicles, users are increasingly concerned about range, and lightweighting of vehicles is gaining increasing attention. The use of carbon fiber has become an important option in lightweight design. The utility model patent application number 202220656118.X relates to a new type of carbon fiber trunk lid assembly. The trunk lid outer panel and the trunk lid inner panel are both covered with seven layers of carbon fiber composite material CFRP. The overall ply meets performance standards and has better corrosion resistance, fatigue resistance, noise reduction, and heat insulation than metal, significantly reducing weight.

[0003] Carbon fiber composite materials offer numerous advantages, but they are also brittle and prone to breakage. Once impacted or punctured by a sharp object, exceeding the carbon fiber's tolerance, the entire component can easily collapse, losing its original strength and rigidity. Since the trunk lid needs to be opened and closed frequently, the upper portion of the trunk lid's outer panel has higher strength and rigidity requirements. If a carbon fiber trunk lid is damaged by a sharp object, the lid may not open and close properly, causing significant inconvenience to the user. Utility Model Content

[0004] The present utility model aims to provide a carbon fiber trunk lid and a vehicle. By adding an exterior cover plate to the upper portion of the carbon fiber trunk lid outer panel, the carbon fiber trunk lid outer panel can be protected to prevent damage to the carbon fiber trunk lid outer panel by flying sharp objects encountered during driving. The carbon fiber trunk lid outer panel can also play a certain strengthening role when the carbon fiber trunk lid outer panel cannot maintain its original strength.

[0005] The utility model provides the following solutions:

[0006] In a first aspect, the present invention describes a carbon fiber trunk lid, comprising: a trunk lid, wherein an exterior cover mounting hole is provided on an upper portion of the trunk lid;

[0007] The exterior cover plate includes an exterior cover plate outer panel and an exterior cover plate inner panel, the exterior cover plate outer panel is fixedly connected to the outer side surface of the exterior cover plate inner panel, a first weight reduction hole is opened on the exterior cover plate inner panel, a foam layer is provided on the inner side surface of the exterior cover plate inner panel, and the inner side surface of the exterior cover plate inner panel can be detachably mounted on the upper part of the trunk lid through the exterior cover plate mounting hole.

[0008] Preferably, the trunk lid comprises:

[0009] A trunk lid outer panel, wherein the upper portion of the trunk lid outer panel is provided with the exterior cover mounting hole, and the trunk lid outer panel is clad with eight layers of carbon fiber composite material CFRP;

[0010] A trunk lid inner panel, the trunk lid inner panel being clad with five layers of carbon fiber composite material CFRP;

[0011] The trunk lid outer panel and the trunk lid inner panel are bonded together by structural adhesive.

[0012] Preferably, the trunk lid further includes:

[0013] A trunk lid lock reinforcement plate assembly, the trunk lid lock reinforcement plate assembly being bonded to the center of the lower edge of the trunk lid inner panel by structural adhesive;

[0014] a trunk lid left hinge reinforcement plate assembly, the trunk lid left hinge reinforcement plate assembly being bonded to the left end of the trunk lid inner panel by structural adhesive;

[0015] The trunk lid right hinge reinforcement plate assembly is bonded to the right end of the trunk lid inner plate by structural adhesive.

[0016] Preferably, the trunk lid outer panel is covered with eight layers of carbon fiber composite material CFRP; the fiber direction of the first, third, sixth and eighth layers of carbon fiber reinforced composite material CFRP fabric covered on the trunk lid outer panel is [0 / 90], the fiber direction of the second and seventh layers of carbon fiber reinforced composite material CFRP fabric is [+45], and the fiber direction of the fourth and fifth layers of carbon fiber reinforced composite material CFRP fabric is [-45].

[0017] Preferably, the trunk lid inner panel is covered with five layers of carbon fiber composite material CFRP; the fiber directions of the first, third and fifth layers of carbon fiber reinforced composite material CFRP fabric covered on the trunk lid inner panel are [0 / 90], and the fiber directions of the second and fourth layers of carbon fiber reinforced composite material CFRP fabric are [±45].

[0018] Preferably, the first, third, sixth and eighth layers of carbon fiber reinforced composite material CFRP fabric covered on the trunk lid outer panel have the same fiber weight per square meter and thickness, and the second, fourth, fifth and seventh layers of carbon fiber reinforced composite material CFRP fabric have the same fiber weight per square meter and thickness.

[0019] Preferably, the second, third and fourth layers of carbon fiber reinforced composite material CFRP fabric covered on the trunk lid inner panel have the same fiber weight per square meter and thickness, and the first and fifth layers of carbon fiber reinforced composite material CFRP fabric have the same fiber weight per square meter and thickness.

[0020] Preferably, the trunk lid outer panel is further provided with a taillight mounting hole, the trunk lid inner panel is provided with a second weight-reducing hole, a taillight through hole and a wiring harness through hole, and the trunk lid lock reinforcement plate assembly is provided with a third weight-reducing hole.

[0021] In a second aspect, the present invention also describes a vehicle comprising the above-mentioned carbon fiber trunk lid.

[0022] Compared with the prior art, the present invention has the following advantages:

[0023] 1. This new design adds an exterior cover to the upper portion of the carbon fiber trunk lid panel, protecting it from damage from flying sharp objects encountered during driving. It also provides some reinforcement when the carbon fiber trunk lid panel loses its original strength. Furthermore, the design can be changed to different colors to enhance the visual effect according to user preference.

[0024] 2. The outer panel of the trunk lid of the present invention uses eight layers of carbon fiber composite material, and the inner panel of the trunk lid uses five layers of carbon fiber composite material. Compared with the trunk lid panel in which both the inner and outer panels use seven layers of carbon fiber composite material, the amount of carbon fiber material used is reduced, thereby reducing the thickness, weight and cost of the trunk lid, and further achieving lightweighting of the vehicle body. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0026] Figure 1 This is an exploded view of the carbon fiber trunk lid (excluding the exterior cover) of the present invention;

[0027] Figure 2 A schematic diagram of an exterior cover plate of the present invention;

[0028] Figure 3 A schematic diagram of the trunk lid outer panel of the present invention;

[0029] Figure 4 This is a schematic diagram of the installation positions of the trunk lid inner panel, the trunk lid lock reinforcement plate assembly, the trunk lid left hinge reinforcement plate assembly, and the trunk lid right hinge reinforcement plate assembly of the present invention.

[0030] In the picture:

[0031] 1. Trunk lid outer panel; 11. Exterior cover mounting hole; 12. Taillight mounting hole; 2. Trunk lid inner panel; 21. Second weight-reducing hole; 22. Taillight through-hole; 23. Wiring harness through-hole; 3. Trunk lid lock reinforcement plate assembly; 4. Trunk lid left hinge reinforcement plate assembly; 5. Trunk lid right hinge reinforcement plate assembly; 6. Exterior cover. DETAILED DESCRIPTION

[0032] To make the objectives, technical solutions, and advantages of this application more clear, this application will be further described in detail below with reference to the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of this application.

[0033] The terms used in the examples of this application are for the purpose of describing specific embodiments only and are not intended to limit this application. The singular forms "a," "the," and "the" used in the examples of this application and the appended claims are also intended to include plural forms, and unless the context clearly indicates otherwise, "a plurality" generally includes at least two.

[0034] It should be understood that the term "and / or" as used herein is merely a description of the relationship between associated objects, indicating that three possible relationships exist. For example, "A and / or B" can represent: A exists alone, A and B exist simultaneously, or B exists alone. Furthermore, the character " / " in this document generally indicates that the associated objects are in an "or" relationship.

[0035] It should be understood that although the terms first, second, third, etc. may be used to describe in the embodiments of the present application, these descriptions should not be limited to these terms. These terms are only used to distinguish the descriptions. For example, without departing from the scope of the embodiments of the present application, the first may also be referred to as the second, and similarly, the second may also be referred to as the first.

[0036] As used herein, the words "if" and "if" may be interpreted as "at the time of" or "when" or "in response to determining" or "in response to detecting," depending on the context. Similarly, the phrases "if it is determined" or "if (stated condition or event) is detected" may be interpreted as "when it is determined" or "in response to the determination" or "when detecting (stated condition or event)" or "in response to detecting (stated condition or event)," depending on the context.

[0037] It should also be noted that the terms "include," "comprises," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a product or device comprising a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such product or device. In the absence of further limitations, an element defined by the phrase "comprises a..." does not exclude the presence of other identical elements in the product or device comprising the element.

[0038] It should be noted in particular that any symbols and / or numbers in the specification that are not marked in the accompanying drawings are not drawing marks.

[0039] Example 1

[0040] See also Figure 1-4 As shown, the carbon fiber trunk cover provided in the embodiment of the present application includes:

[0041] The trunk lid has an exterior cover mounting hole 11 provided on the upper portion of the trunk lid;

[0042] The exterior cover plate 6 includes an exterior cover plate outer plate and an exterior cover plate inner plate. The exterior cover plate outer plate is fixedly connected to the outer side surface of the exterior cover plate inner plate. A first weight reduction hole is opened on the exterior cover plate inner plate. A foam layer is provided on the inner side surface of the exterior cover plate inner plate. The inner side surface of the exterior cover plate inner plate can be removably mounted on the upper part of the trunk lid through the exterior cover plate mounting hole 11.

[0043] By adding an exterior cover panel to the upper portion of the carbon fiber trunk lid outer panel, the carbon fiber trunk lid outer panel below can be protected, preventing damage to the carbon fiber layer from flying sharp objects encountered during driving. It can also provide some reinforcement to the carbon fiber trunk lid when it loses its original strength. Furthermore, it can be changed to different colors based on user preference to enhance the visual effect. The exterior cover panel 6 includes an exterior cover panel outer panel and an exterior cover panel inner panel that are interconnected. The exterior cover panel inner panel is provided with a first weight-reducing hole, which not only protects the carbon fiber layer but also ensures vehicle body lightweighting. A PUR foam layer is provided on the inner side of the exterior cover panel inner panel. Since the inner side of the exterior cover panel inner panel is mounted on the trunk lid upper portion, the other side of the PUR foam layer contacts the trunk lid upper portion, providing support for the exterior cover panel and preventing abnormal noise.

[0044] See also Figure 1-4 As shown, the trunk lid includes:

[0045] The trunk lid outer panel 1 has an exterior cover mounting hole 11 on its upper portion and is clad with eight layers of carbon fiber composite material CFRP;

[0046] The trunk lid inner panel 2 is covered with five layers of carbon fiber composite material CFRP;

[0047] The trunk lid outer panel 1 and the trunk lid inner panel 2 are bonded together by structural adhesive.

[0048] The trunk lid outer panel uses eight layers of carbon fiber composite material, and the trunk lid inner panel uses five layers of carbon fiber composite material. Compared with existing carbon fiber trunk lids, the amount of carbon fiber material used is reduced, thereby reducing the thickness, weight and cost of the trunk lid, further achieving the lightweighting of the vehicle body.

[0049] See also Figure 1-4 As shown, the trunk lid also includes:

[0050] The trunk lid lock reinforcement plate assembly 3 is bonded to the center of the lower edge of the trunk lid inner panel 2 by structural adhesive;

[0051] The left trunk lid hinge reinforcement plate assembly 4 is bonded to the left end of the trunk lid inner panel 2 by structural adhesive;

[0052] The trunk lid right hinge reinforcement plate assembly 5 is bonded to the right end of the trunk lid inner panel 2 by structural adhesive.

[0053] By using carbon fiber materials, the trunk lid structure and process are optimized. The trunk lid outer panel, taillight mounting plate, lower trunk lid outer panel, trunk lid inner panel, left / right trunk lid vibration damping brackets, trunk lid lock reinforcement plate, left / right trunk lid connecting plate, and left / right trunk lid reinforcement plate of the traditional sheet metal trunk lid assembly are integrated and simplified into trunk lid outer panel 1, trunk lid inner panel 2, trunk lid lock reinforcement plate assembly 3, trunk lid left hinge reinforcement plate assembly 4, and trunk lid right hinge reinforcement plate assembly 5. The performance indicators are significantly improved, as shown in Table 1.

[0054] Table 1-Indicator performance comparison table

[0055] Indicator name Material-Steel Material-Carbon fiber Lateral stiffness (N / mm) 38.6 49.5 Intermediate restraint torsion (N / mm) 64 74.63 Edge restraint torsion (Nm / °) 55.5 67.43 Mode (Hz) 49.9 77.2

[0056] As shown in Table 2-3, the trunk lid outer panel 1 is clad with eight layers of carbon fiber reinforced plastic (CFRP). The fiber orientation of the first, third, sixth, and eighth layers of CFRP fabric is [0 / 90], the second and seventh layers are [+45], and the fourth and fifth layers are [-45]. This carbon fiber trunk lid exhibits excellent performance.

[0057] As shown in Table 2-3, the trunk lid inner panel 2 is clad with five layers of carbon fiber reinforced plastic (CFRP). The fiber orientation of the first, third, and fifth layers of CFRP fabric is [0 / 90], while the fiber orientation of the second and fourth layers is [±45]. This carbon fiber trunk lid exhibits excellent performance.

[0058] As shown in Tables 2-3, the first, third, sixth, and eighth layers of carbon fiber reinforced composite (CFRP) fabric applied to the trunk lid outer panel 1 have the same fiber weight per square meter and thickness. The second, fourth, fifth, and seventh layers of carbon fiber reinforced composite (CFRP) fabric have the same fiber weight per square meter and thickness. The eight layers of CFRP applied to the trunk lid outer panel 1 have thicknesses of 0.2 mm, 0.18 mm, 0.2 mm, 0.18 mm, 0.18 mm, 0.2 mm, 0.18 mm, and 0.2 mm, respectively, for a total thickness of 1.52 mm. The fiber weights per square meter of the eight layers of CFRP applied to the trunk lid outer panel 1 are 200 gsm, 180 gsm, 200 gsm, 180 gsm, 180 gsm, 200 gsm, 180 gsm, and 200 gsm, respectively. Compared to existing carbon fiber trunk lid outer panels, this is thinner and lighter, further contributing to vehicle body lightweighting.

[0059] As shown in Table 2-3, the second, third, and fourth layers of carbon fiber reinforced composite (CFRP) fabric applied to the trunk lid inner panel 2 have the same fiber weight per square meter and thickness, while the first and fifth layers of carbon fiber reinforced composite (CFRP) fabric have the same fiber weight per square meter and thickness. The thicknesses of the five layers of CFRP applied to the trunk lid inner panel 2 are 0.2mm, 0.34mm, 0.34mm, 0.34mm, and 0.2mm, respectively, for a total thickness of 1.42mm. The fiber weights per square meter of the five layers of CFRP applied to the trunk lid inner panel 2 are 200gsm, 300gsm, 300gsm, 300gsm, and 200gsm, respectively. Compared to existing carbon fiber trunk lid inner panels, this is thinner and lighter, further contributing to vehicle body lightweighting.

[0060] Table 2 - Trunk lid outer panel layup data

[0061]

[0062]

[0063] Table 3- Trunk lid inner panel layer data

[0064]

[0065] See also Figure 3 、 4 As shown, the trunk lid outer panel 1 is further provided with a taillight mounting hole 12, the trunk lid inner panel 2 is provided with a second weight-reducing hole 21, a taillight through hole 22 and a wiring harness through hole 23, and the trunk lid lock reinforcement plate assembly 3 is provided with a third weight-reducing hole.

[0066] The taillight is installed in the taillight mounting hole 12. The second weight-reducing hole 21 and the third weight-reducing hole can further reduce the weight to achieve lightweight vehicle body. The taillight through hole 22 and the wiring harness through hole 23 are used to allow the taillight and wiring harness to pass through so that the taillight and wiring harness can be smoothly arranged in the trunk lid.

[0067] Example 2

[0068] An embodiment of the present application provides a vehicle, comprising the above-mentioned carbon fiber trunk lid.

[0069] The working principle of this utility model is:

[0070] The addition of an exterior cover to the carbon fiber decklid protects the decklid from sharp flying objects encountered during driving, and also provides reinforcement when the decklid loses its original strength. The decklid outer panel utilizes eight layers of carbon fiber composite material, while the inner decklid uses five layers. This reduces the amount of carbon fiber used compared to decklids with seven layers of composite material for both the inner and outer panels, further contributing to vehicle weight reduction.

[0071] Finally, it should be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. References to the common and similar parts between the various embodiments will be sufficient. For the systems or devices disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, their descriptions are relatively simple; for relevant details, refer to the descriptions of the methods.

[0072] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A carbon fiber trunk lid, characterized in that: include: A trunk cover, wherein an exterior cover mounting hole (11) is provided on the upper portion of the trunk cover; An exterior cover plate (6), the exterior cover plate (6) comprising an exterior cover plate outer plate and an exterior cover plate inner plate, the exterior cover plate outer plate being fixedly connected to the outer side surface of the exterior cover plate inner plate, the exterior cover plate inner plate being provided with a first weight reduction hole, the inner side surface of the exterior cover plate inner plate being provided with a foam layer, and the inner side surface of the exterior cover plate inner plate being detachably mounted on the upper portion of the trunk lid through the exterior cover plate mounting hole (11).

2. The carbon fiber trunk lid according to claim 1, characterized in that: The trunk lid comprises: A trunk lid outer panel (1), wherein the upper portion of the trunk lid outer panel (1) is provided with the exterior cover mounting hole (11), and the trunk lid outer panel (1) is clad with eight layers of carbon fiber composite material CFRP; A trunk lid inner panel (2), wherein the trunk lid inner panel (2) is covered with five layers of carbon fiber composite material CFRP; The trunk lid outer panel (1) and the trunk lid inner panel (2) are bonded together by structural adhesive.

3. The carbon fiber trunk lid according to claim 2, characterized in that: The trunk lid further includes: A trunk lid lock reinforcement plate assembly (3), wherein the trunk lid lock reinforcement plate assembly (3) is bonded to the middle of the lower edge of the trunk lid inner plate (2) by means of structural adhesive; A trunk lid left hinge reinforcement plate assembly (4), wherein the trunk lid left hinge reinforcement plate assembly (4) is bonded to the left end of the trunk lid inner plate (2) by means of structural adhesive; A trunk lid right hinge reinforcement plate assembly (5) is bonded to the right end of the trunk lid inner plate (2) by structural adhesive.

4. The carbon fiber trunk lid according to claim 2, characterized in that: The trunk lid outer panel (1) is covered with eight layers of carbon fiber composite material CFRP; the fiber directions of the first, third, sixth and eighth layers of carbon fiber reinforced composite material CFRP fabric covered on the trunk lid outer panel (1) are [0 / 90], the fiber directions of the second and seventh layers of carbon fiber reinforced composite material CFRP fabric are [+45], and the fiber directions of the fourth and fifth layers of carbon fiber reinforced composite material CFRP fabric are [-45].

5. The carbon fiber trunk lid according to claim 2, characterized in that: The trunk lid inner panel (2) is covered with five layers of carbon fiber composite material CFRP; the fiber directions of the first, third and fifth layers of carbon fiber reinforced composite material CFRP fabric covered on the trunk lid inner panel (2) are [0 / 90], and the fiber directions of the second and fourth layers of carbon fiber reinforced composite material CFRP fabric are [±45].

6. The carbon fiber trunk lid according to claim 2, characterized in that: The first, third, sixth and eighth layers of carbon fiber reinforced composite material CFRP fabric covered on the trunk lid outer panel (1) have the same fiber weight per square meter and thickness, and the second, fourth, fifth and seventh layers of carbon fiber reinforced composite material CFRP fabric have the same fiber weight per square meter and thickness.

7. The carbon fiber trunk lid according to claim 2, characterized in that: The second, third and fourth layers of carbon fiber reinforced composite material CFRP fabric covered on the trunk lid inner panel (2) have the same fiber weight per square meter and thickness, and the first and fifth layers of carbon fiber reinforced composite material CFRP fabric have the same fiber weight per square meter and thickness.

8. The carbon fiber trunk lid according to claim 3, characterized in that: The trunk lid outer plate (1) is further provided with a taillight mounting hole (12), the trunk lid inner plate (2) is provided with a second weight-reducing hole (21), a taillight through hole (22) and a wiring harness through hole (23), and the trunk lid lock reinforcement plate assembly (3) is provided with a third weight-reducing hole.

9. A vehicle, characterized in that: The invention comprises a carbon fiber trunk lid according to any one of claims 1 to 8.

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