Vehicle body part, preparation method thereof and vehicle

Abstract

The invention provides a vehicle body part and a preparation method thereof and a vehicle, the vehicle body part comprises a first part and a second part which are connected together, the first part and the second part are both made of composite materials and are provided with a plurality of laying layers which are arranged in a stacked mode, each of the first component and the second component is provided with a connecting part positioned in a connecting area between the first component and the second component, and a body part positioned outside the connecting part; the paving layers in the body parts are solidified together in the connecting area, and the paving layers in the two connecting parts are spliced in a staggered mode in the connecting area and are solidified and connected together. According to the invention, the appearance seamless effect of the vehicle body part made of the composite material can be realized, the visual delicate sense of the vehicle body part can be improved, and the appearance quality of the whole vehicle can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle bodies, and in particular to a vehicle body component. The present invention also relates to a method for preparing the vehicle body component, and a vehicle equipped with the vehicle body component. Background Art

[0002] With the development of technology and the increasing requirements for energy conservation and emission reduction, vehicle lightweight design has become an important aspect to improve competitiveness. To this end, more and more automakers are beginning to try to use new materials and new process structures in the hope of reducing the weight of the entire vehicle.

[0003] At present, the application of composite materials such as carbon fiber has gradually become an important measure in the lightweight design of car bodies, especially for new materials with excellent mechanical properties that are transformed from organic fibers through a series of heat treatments. Carbon fiber composite materials have begun to be used in many car models.

[0004] Taking the vehicle covering parts made of carbon fiber composite materials as an example, such as the side outer panels and the roof outer panels in the vehicle body, there are generally two ways to connect the two. One is to apply glue to the overlapping position of the roof outer panel after the side outer panel is positioned, and then adhere the roof outer panel to the side outer panel. The other way is to deepen the Z direction (the vertical direction of the whole vehicle) at the overlapping position of the side outer panel and the roof outer panel based on the above method, and further add a top trim to seal the notch structure formed after deepening.

[0005] Although both of the above methods can achieve the connection between the side panel and the top cover panel, for the first method, due to the shrinkage of the glue during curing, a visible seam will be left between the two parts after curing, which is not beautiful and easy to accumulate dust. For the second method, due to the need for deepening treatment, it occupies a large Z-direction space of the vehicle, which is not conducive to the layout of the top cover interior and increases the cost of parts. At the same time, it will also leave a visible seam on the appearance, resulting in an unsightly appearance and easy accumulation of dust at the seam. Summary of the invention

[0006] In view of this, the present invention aims to provide a vehicle body component, so as to enable the vehicle body component made of composite materials to achieve a seamless appearance.

[0007] To achieve the above object, the technical solution of the present invention is achieved as follows:

[0008] A vehicle body component, comprising a first component and a second component connected together, wherein the first component and the second component are both made of composite materials and have a plurality of laminated layers, and the first component and the second component both have a connecting portion located in a connecting area therebetween, and a body portion located outside the connecting portion;

[0009] The plies in each of the main body parts are cured together, and in the connection area, the plies in the two connection parts are staggered and spliced ​​and cured together.

[0010] Furthermore, a width k of each of the connecting portions along a connecting direction between the first component and the second component is between 25 mm and 75 mm.

[0011] Further, in the connection area, the plies in the two connection parts are spliced ​​one by one, and the seams between adjacent plies are staggered in the connection direction between the first component and the second component.

[0012] Furthermore, a width t of the joint along the connection direction of the first component and the second component is not greater than 1 mm; and / or,

[0013] A distance L between the seams of adjacent plies in a connection direction between the first component and the second component is not less than 25 mm.

[0014] Furthermore, the first component and the second component are both made of carbon fiber composite materials.

[0015] Compared with the prior art, the present invention has the following advantages:

[0016] The body parts described in the present invention are connected together by interlacing and splicing the layers in the connecting part of the first part and the second part and then curing them together, so that the two parts are connected, and the body parts made of composite materials can achieve a seamless appearance at the connecting position, which helps to improve the visual refinement of the body parts and improve the appearance quality of the entire vehicle.

[0017] In addition, the width k of each connection part is set to ensure the reliability of the connection between the two components. The plies in the two connection parts are spliced ​​one by one, and the seams between adjacent plies are staggered, which not only realizes the staggered splicing between the two connection parts, but also enables the plies in the two connection parts to contact better, so as to further ensure the reliability of the connection between the two components.

[0018] In addition, the setting of the seam width t can reserve space for the dimensional deformation of the plies during curing, and at the same time can ensure the contact area between adjacent plies to better improve the connection reliability between the two components. The setting of the distance L between adjacent seams can reduce the influence of the seam position on the connection strength between the staggered plies, which is also conducive to improving the connection reliability between the two components. The first component and the second component are made of carbon fiber composite materials, which have mature technology, low cost, and can also meet the structural performance requirements of the body components.

[0019] Another object of the present invention is to provide a method for preparing a vehicle body component, the method comprising:

[0020] Separately forming a first component and a second component each having a body portion and a connection portion, wherein the first component and the second component are both made of composite materials and have a plurality of stacked layers, and the layers in each of the body portions are cured together;

[0021] The molded first component and the second component are placed in a mold, and after the plies in the two connection parts are staggered and spliced, the two connection parts are cured and connected together.

[0022] Furthermore, the first component and the second component are both made of carbon fiber composite materials;

[0023] The plies in the two connecting parts are spliced ​​one by one, the seams between adjacent plies are staggered in the connection direction between the first component and the second component, and resin is applied on each of the spliced ​​plies;

[0024] The two connection parts are connected by baking and curing through a heater.

[0025] Furthermore, one side of each of the first component and the second component is attached to the mold, and a vacuum bag with an air nozzle is covered on the other side of the first component and the second component;

[0026] Sealing strips are provided between the main body parts of the first component and the second component and the mold and the vacuum bag, and after vacuuming through the air nozzle, the two spliced ​​connection parts are baked and cured.

[0027] Further, the two connecting parts are disposed on one side of the vacuum bag, and an isolation mold and a breathable sticker are sequentially arranged in a direction pointing toward the vacuum bag; and / or,

[0028] A release cloth is provided between the first component, the second component and the mold; and / or,

[0029] The heater is an infrared heater.

[0030] The method for preparing the body parts described in the present invention first forms a first part and a second part having a main body part and a connecting part, and then cross-stitches and splices the plies in the connecting part of the two parts and connects them together by curing, thereby connecting the two parts. This enables the body parts made of composite materials to achieve a seamless appearance at the connecting position, which helps to enhance the visual refinement of the body parts and improve the appearance quality of the entire vehicle.

[0031] In addition, the present invention also provides a vehicle, in which the vehicle body component as described above is provided.

[0032] The vehicle of the present invention has the same beneficial effects as the above-mentioned vehicle body components, which will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0034] Figure 1 It is a structural schematic diagram of a vehicle body component according to an embodiment of the present invention;

[0035] Figure 2 This is a schematic structural diagram of the first component according to an embodiment of the present invention;

[0036] Figure 3 A schematic diagram of the preparation of a vehicle body component according to an embodiment of the present invention;

[0037] Description of reference numerals:

[0038] 1. First component; 2. Second component; 3. Mold; 4. Sealing strip; 5. Release cloth; 6. Vacuum bag; 7. Isolation film; 8. Breathable sticker; 9. Air nozzle; 10. Heater;

[0039] 1a, first main body part; 1b, first connecting part; 2a, second main body part; 2b, second connecting part; c, ply; f, joint; k, width of connecting part; t, width of joint; L, distance between joints. DETAILED DESCRIPTION

[0040] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0041] In the description of the present invention, it should be noted that if there are terms indicating orientation or positional relationship such as "upper", "lower", "inner", "outer", etc., they are based on the orientation or positional relationship shown in the 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 cannot be understood as limiting the present invention. In addition, if there are terms such as "first", "second", etc., they are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0042] In addition, in the description of the present invention, unless otherwise clearly defined, the terms "installed", "connected", "connection" and "connector" 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 or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood in combination with specific circumstances.

[0043] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0044] Embodiment 1

[0045] This embodiment relates to a vehicle body component, combined with Figure 1 As shown, the vehicle body component includes a first component 1 and a second component 2 connected together, wherein the first component 1 and the second component 2 are both made of composite materials and have a plurality of laminated layers c arranged in a stacked manner. At the same time, the first component 1 and the second component 2 also have a connecting portion located in a connecting area Q therebetween, and a main body portion located outside the connecting portion.

[0046] The plies c in the main parts of the first component 1 and the second component 2 are cured together, and in the connection area Q, the plies c in the connection parts of the first component 1 and the second component 2 are staggered and spliced, and cured and connected together, thereby realizing the connection between the first component 1 and the second component 2 to form the body component of this embodiment.

[0047] As shown in the above structure, the first component 1 and the second component 2 are connected together by staggered splicing and curing of the plies c in the connecting part. This embodiment can make the body parts made of composite materials achieve a seamless appearance at the connecting position, which is beneficial to improving the appearance quality of the body parts.

[0048] Based on the above overall introduction, in detail, as a preferred implementation form, the body parts of this embodiment can be made of carbon fiber composite materials, that is, the first part 1 and the second part 2 are both made of carbon fiber composite materials. In this way, the first part 1 and the second part 2 are made of carbon fiber composite materials, which has the advantages of mature technology and low cost, and can also meet the structural performance requirements of the body parts.

[0049] Of course, in addition to using carbon fiber composite materials, the first component 1 and the second component 2 constituting the body parts of this embodiment may also use other composite materials, as long as they also have multiple laminated layers c and use a curing process to achieve connection between different components and achieve corresponding structural shapes of the components.

[0050] In this embodiment, as a preferred implementation form, the body component formed by connecting the first component 1 and the second component 2 can be, for example, a covering component in a vehicle body. In this case, the covering component can be, for example, a body outer covering component composed of a side outer panel and a roof outer panel connected in the body, and thus the first component 1 and the second component 2 are the side outer panel and the roof outer panel respectively. At the same time, by adopting the structural design of this embodiment, it is possible to achieve an effect of no appearance seam at the connection position between the side outer panel and the roof outer panel.

[0051] Of course, it should be pointed out that, in addition to the body outer covering composed of the side outer panel and the roof outer panel, the body component of this embodiment can also be other structures that are also body outer coverings. Moreover, in addition to being body coverings, the body component of this embodiment can also be other structures in the vehicle that can be made of carbon fiber composite materials, which is not limited to this embodiment.

[0052] In this embodiment, for the convenience of description, the main body part and the connecting part in the first component 1 are specifically referred to as the first main body part 1a and the first connecting part 1b. Similarly, the main body part and the connecting part in the second component 2 are also referred to as the second main body part 2a and the second connecting part 2b.

[0053] And, continue to combine Figure 2 As shown in FIG. 1 , as a preferred implementation form, taking the first connecting portion 1 b in the first component 1 as an example, the width k of each connecting portion along the connecting direction of the first component 1 and the second component 2 in this embodiment can generally be set between 25-75 mm.

[0054] At this time, the connection direction between the first component 1 and the second component 2 is Figure 1 In the left and right directions, the width k of each connecting portion is set to ensure the reliability of the connection between the first component 1 and the second component 2. In addition, in a specific implementation, based on the number of layers of the plies c in the first component 1 and the second component 2, the width k can be, for example, 25mm, 30mm, 32mm, 35mm, 40mm, 45mm, 50mm, 55mm, 60mm, 65mm, 70mm, 75, etc., and when the number of layers of the plies c is large, the width k should also take a large value, and when the number of layers of the plies c is small, the width k takes a small value accordingly.

[0055] Still Figure 1 As shown in the figure, as a preferred implementation form, in the connection area Q, the plies c in the first connection part 1b and the second connection part 2b of this embodiment are specifically spliced ​​one by one, and the seams f between adjacent plies c are staggered in the connection direction of the first component 1 and the second component 2.

[0056] In this way, it can be understood that making the plies c in the two connecting parts spliced ​​one by one and making the seams f between adjacent plies c staggered can not only realize the staggered splicing between the two connecting parts, but also make the plies c in the two connecting parts better contact, thereby further ensuring the reliability of the connection between the first component 1 and the second component 2.

[0057] Of course, it should be noted that, in addition to preferably splicing the plies c in the two connecting parts one by one, in specific implementation, based on the thickness of the plies c and other specific conditions, it is also possible to stack two or another number of plies c in one of the connecting parts and then staggered-stitch with multiple plies c that are similarly stacked in the other connecting part.

[0058] In this embodiment, still refer to Figure 1 As a preferred implementation form, the width t of the joint f along the connection direction between the first component 1 and the second component 2 can generally be set to be no greater than 1 mm. At this time, by setting the width t of the joint f, a space for the dimensional deformation of the plies c during curing can be reserved, and the contact area between adjacent plies c can also be ensured, so as to better improve the connection reliability between the first component 1 and the second component 2.

[0059] During specific implementation, the width t of the joint f may be, for example, 0.5 mm, 0.8 mm or 1 mm, and generally, preferably, may be 1 mm.

[0060] In this embodiment, still refer to Figure 1 As a preferred implementation form, the distance L between the seams f between adjacent plies c in the connection direction between the first component 1 and the second component 2 can be set to be no less than 25 mm.

[0061] In this way, by setting the distance L between adjacent seams f, the influence of the position of the seams f on the connection strength between the staggered plies c can be reduced, and it is also beneficial to improve the connection reliability between the first component 1 and the second component 2. In specific implementation, the distance L can be, for example, 25 mm, 28 mm, 30 mm, 32 mm, 35 mm, etc.

[0062] The specific preparation method of the vehicle body component of this embodiment can be further described in the following embodiment 2.

[0063] The body parts of this embodiment are connected together by interlacing and curing the layers c in the connecting part of the first part 1 and the second part 2, so that the two parts are connected, and the body parts made of composite materials can achieve a seamless appearance at the connecting position, which helps to enhance the visual refinement of the body parts and the appearance quality of the entire vehicle, and has good practicality.

[0064] Embodiment 2

[0065] The present embodiment relates to a method for preparing a vehicle body component, which is specifically used to prepare the vehicle body component in the first embodiment. In combination with the introduction in the first embodiment, the preparation method of the present embodiment includes the following steps.

[0066] Step s01, respectively forming a first component 1 and a second component 2 each having a main body portion and a connecting portion.

[0067] As mentioned in the first embodiment, the first component 1 and the second component 2 are both made of composite materials and have a plurality of laminated layers c, and the laminated layers c in each main body part are cured together. At the same time, preferably, the first component 1 and the second component 2 can also be made of carbon fiber composite materials.

[0068] In addition, during the specific preparation process, when the first component 1 and the second component 2 are formed respectively, the plies c used to form the first component 1 and the second component 2 are laid as required, and combined with Figure 1 and Figure 2 As shown in FIG, in the first component 1 and the second component 2, the position of the ply c as the main body portion needs to be coated with resin during paving, while the position as the connecting portion is not coated with resin first.

[0069] Next, after isolating and protecting the ply c position as the connecting part, the autoclave process or HP-RTM (High Pressure-Resin Transfer Molding) process can be used to solidify the ply c position as the main body part, thereby completing the solidification of the main body parts in the first component 1 and the second component 2, and retaining the connecting parts for connection in both components, and the ply c at the connecting part position is still in a layable state.

[0070] Step s02: placing the formed first component 1 and the second component 2 in the mold 3, and after the plies c in the two connecting parts are staggered and spliced, the two connecting parts are cured and connected together.

[0071] In step s02, specifically, as mentioned in the first embodiment, Figure 1 , and then combined Figure 3 As shown in , preferably, the plies c in the connecting portion of the first component 1 and the second component 2 are spliced ​​one by one, and the seams f between adjacent plies c are staggered in the connecting direction of the first component 1 and the second component 2.

[0072] At the same time, similar to the cured main body part, resin should also be applied to each of the spliced ​​layers c. After the layers c in the two connection parts are staggered and spliced, the two connection parts can be baked by the heater 10 in this embodiment to accelerate the curing of the resin and achieve a cured connection between the two connection parts.

[0073] In addition, in step s02, the first component 1 and the second component 2 can generally be positioned on the mold 3 by a fixture, and the mold 3 is usually also provided with a contoured surface corresponding to the appearance surface of the vehicle model component, so that after solidification at the connection area Q position, the desired appearance surface can be formed.

[0074] After being positioned on the mold 3, each layer c can be laid out in sequence according to the design drawing. Figure 3 As shown, the plies c in the two connection parts are spliced ​​one by one, and the seams f between adjacent plies c are staggered in the connection direction between the first component 1 and the second component 2. Of course, when laying, the width t of the seams f can generally be 1 mm, and the distance L between the seams f of adjacent layers can be set to be no less than 25 mm. At the same time, a layer of resin needs to be applied on each ply c after laying.

[0075] After the paving is completed, one side of the first component 1 and the second component 2 are both attached to the mold 3, and corresponding to the side attached to the mold 3, the other side of the first component 1 and the second component 2 is covered with a vacuum bag 6 with an air nozzle 9. At the same time, sealing strips 4 are also provided between the main body of the first component 1 and the second component 2 and the mold 3 and the vacuum bag 6. By providing the sealing strips 4 on both sides, a closed space can be formed at the connection area Q, so that after vacuuming through the air nozzle 9, the two connected parts after splicing can be baked and cured by the heater 10.

[0076] It is worth noting that, in the specific implementation, when vacuuming through the air nozzle 9, the sealing strip 4 on the side where the vacuum bag 6 is located should be pressed to ensure the sealing effect of the vacuum bag 6. In the process of connecting the air nozzle 9 to the vacuum pump and vacuuming, the vacuum bag 6 should also be constantly arranged to keep it flat, and simultaneously check whether there is air leakage between the vacuum bag 6 and the sealing strip 4. When the set vacuum standard is reached, the air nozzle 9 can be closed to stop the vacuum pump.

[0077] As a preferred implementation form, in this embodiment, further, on the side of the two connecting parts facing the vacuum bag 6, an isolation mold 7 and a breathable sticker 8 can be sequentially arranged in the direction pointing to the vacuum bag. By setting the isolation mold 7 and the breathable sticker 8, it is possible to avoid the adhesion of the resin-coated ply c to the vacuum bag 6, and also to ensure the curing effect of the two staggered connecting parts during heating and baking. In specific implementation, the isolation mold 7 and the breathable sticker 8 can be conventional products used in the preparation of carbon fiber composite material parts.

[0078] In addition, as a preferred implementation form, in this embodiment, a release cloth 5 may be provided between the first component 1, the second component 2 and the mold, so as to facilitate the separation of the first component 1 and the second component 2 from the mold 3 after curing. The heater 10 may preferably be an infrared heater, and the heating temperature and time of the heater, as well as the vacuum standard during the vacuuming, may be specifically selected according to the number of layers of the layer c.

[0079] The method for preparing the body parts of the present embodiment first forms a first part 1 and a second part 2 having a main body part and a connecting part, and then cross-stitches and connects the plies c in the connecting parts of the two parts together by curing, thereby connecting the two parts. This enables the body parts made of composite materials to achieve a seamless appearance at the connecting position, which helps to enhance the visual refinement of the body parts and improve the appearance quality of the entire vehicle.

[0080] In addition, it should be pointed out that after the curing of the connection area Q between the first component 1 and the second component 2 is completed, it can be further polished and trimmed locally, and then sprayed on the vehicle, so that the vehicle using the body parts prepared in this embodiment has a better appearance quality.

[0081] Embodiment 3

[0082] This embodiment relates to a vehicle, in which the vehicle body component in the first embodiment is provided.

[0083] Among them, as mentioned in Example 1, in the vehicle of this embodiment, the above-mentioned body parts can be, for example, body outer covering parts composed of side outer panels and top cover outer panels. At the same time, in addition to being body outer covering parts, the above-mentioned body parts can also be other parts in the vehicle made of composite materials, and the composite materials are preferably carbon fiber composite materials.

[0084] The vehicle of this embodiment adopts the body parts of the first embodiment, so that the body parts made of composite materials can achieve a seamless appearance at the connection positions, which helps to improve the visual refinement of the body parts and can improve the appearance quality of the entire vehicle.

[0085] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A vehicle body component, characterized in that: The invention comprises a first component (1) and a second component (2) connected together, wherein the first component (1) and the second component (2) are both made of composite materials and have a plurality of laminated layers (c) arranged in a stacked manner, and the first component (1) and the second component (2) both have a connecting portion located in a connecting region (Q) therebetween, and a main body portion located outside the connecting portion; The plies (c) in each of the main body parts are cured together, and in the connection area (Q), the plies (c) in the two connection parts are staggered and spliced ​​and cured together.

2. The vehicle body component according to claim 1, characterized in that: The width k of each connecting portion along the connecting direction of the first component (1) and the second component (2) is between 25 and 75 mm.

3. The vehicle body component according to claim 1, characterized in that: In the connection area (Q), the plies (c) in the two connection parts are spliced ​​one by one, and the seams (f) between adjacent plies (c) are staggered in the connection direction of the first component (1) and the second component (2).

4. The vehicle body component according to claim 3, characterized in that: The width t of the joint (f) along the connection direction of the first component (1) and the second component (2) is not greater than 1 mm; and / or, The distance L between the joints (f) between adjacent plies (c) in the connection direction between the first component (1) and the second component (2) is not less than 25 mm.

5. The vehicle body component according to any one of claims 1 to 4, characterized in that: The first component (1) and the second component (2) are both made of carbon fiber composite materials.

6. A method for preparing a vehicle body component, characterized in that: The preparation method comprises: Separately forming a first component (1) and a second component (2), each having a main body portion and a connecting portion, wherein the first component (1) and the second component (2) are both made of composite materials and have a plurality of stacked layers (c), and the layers (c) in each of the main body portions are cured together; The molded first component (1) and the second component (2) are placed in a mold (3), and after the plies (c) in the two connecting parts are staggered and spliced, the two connecting parts are cured and connected together.

7. The method for preparing a vehicle body component according to claim 6, characterized in that: The first component (1) and the second component (2) are both made of carbon fiber composite material; The plies (c) in the two connecting parts are spliced ​​one by one, the seams (f) between adjacent plies (c) are staggered in the connection direction of the first component (1) and the second component (2), and resin is applied on each of the plies (c) after splicing; The two connection parts are connected by baking and curing through a heater (10).

8. The method for preparing a vehicle body component according to claim 7, characterized in that: One side of each of the first component (1) and the second component (2) is attached to the mold (3), and a vacuum bag (6) with an air nozzle (9) is covered on the other side of the first component (1) and the second component (2); Sealing strips (4) are provided between the main body parts of the first component (1) and the second component (2) and the mold (3) and the vacuum bag (6), and after vacuuming through the air nozzle (9), the two connected parts are baked and cured after being spliced.

9. The method for preparing a vehicle body component according to claim 8, characterized in that: An isolation mold (7) and a breathable sticker (8) are sequentially arranged on one side of the two connecting parts facing the vacuum bag (6) in a direction pointing toward the vacuum bag; and / or, A release cloth (5) is provided between the first component (1) and the second component (2) and the mold; and / or, The heater (10) is an infrared heater.

10. A vehicle, characterized in that: The vehicle is provided with the vehicle body component according to any one of claims 1 to 5.

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