Rear side wall assembly, body in white and vehicle

Abstract

The invention relates to a rear side wall assembly, a body in white and a vehicle, and the rear side wall assembly comprises a rear wheel cover, a D column and a first supporting plate; the rear wheel cover comprises a body part and a first turnup part, the first turnup part is arranged downwards along the outer side edge of the body part, a first connecting part is connected between the first turnup part and the body part in the length direction, and the rear end of the first turnup part is connected with the outer side edge of the body part through a second connecting part; a matching part is arranged at the rear end of the first connecting part, the top end of the first supporting plate is fixed to the D column, and the bottom end of the first supporting plate is fixed to the matching part. According to the scheme, under the condition that the overall weight and cost are not increased, the situation that the rear wheel cover is subjected to fatigue cracking due to stress concentration under the durable working condition can be avoided.

Description

Technical Field

[0001] This application relates to the field of vehicle technology, specifically to a rear side panel assembly, a body-in-white, and a vehicle. Background Technology

[0002] The rear wheel arch outer panel has a main body and a flange structure. A clearance notch is formed between the rear end of the flange structure and the main body for mounting the rear bumper. At the end of the flange structure and the apex of the clearance notch, weak areas prone to stress concentration are formed. Under structural durability test conditions, these weak areas are prone to fatigue cracking. To avoid this, the overall structural strength can be improved by adding a reinforcing structure to the weak area or by increasing the overall thickness of the rear wheel arch outer panel. However, this will increase the weight and cost of the parts.

[0003] Therefore, how to prevent the rear wheel arch from fatigue cracking due to stress concentration under durable working conditions without increasing the overall weight and cost is a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0004] The purpose of this application is to provide a rear side panel assembly, body-in-white, and vehicle that can prevent fatigue cracking of the rear wheel arches under durability conditions due to stress concentration without increasing overall weight and cost.

[0005] To solve the above-mentioned technical problems, this application provides a rear side panel assembly, including a rear wheel arch, a D-pillar, and a first support plate; the rear wheel arch includes a body portion and a first flange portion, the first flange portion is disposed downward along the outer edge of the body portion, a first connecting portion is connected between the first flange portion and the body portion along the length direction, and the rear end of the first flange portion is connected to the outer edge of the body portion through a second connecting portion; a mating portion is provided at the rear end of the first connecting portion, the top end of the first support plate is fixed to the D-pillar, and the bottom end of the first support plate is fixed to the mating portion.

[0006] The rear end of the first connecting part has a mating part. This mating part is located at the connection between the outer edge of the main body, the inner side of the rear end edge of the first flange, and the inner side of the top edge of the second connecting part. Therefore, the location of this mating part is prone to stress concentration. In this embodiment, the bottom of the first support plate is fixed to the mating part. This arrangement allows the external force to be transmitted from the first support plate to the rear wheel cover to the surrounding area through the mating part, thereby protecting the location of the mating part. This prevents the external force from being easily transmitted to the location of the mating part and causing stress concentration when the bottom of the first support plate is fixed to other positions of the rear wheel cover, which could lead to deformation or damage at this location.

[0007] After the bottom end of the first support plate is fixed to the mating part, the bottom end of the first support plate and the mating part form an integral structure, which can enhance the structural strength at the location of the mating part. Therefore, when the bottom of the first support plate is fixed to the mating part, stress concentration at the location of the mating part can be avoided, thereby protecting the structure of the rear wheel cover and extending its service life.

[0008] In other words, in this application, by fixing the area prone to stress concentration to the bottom of the first support plate, stress concentration can be avoided without the need for additional reinforcement structures or increasing the thickness of the rear wheel arch plate. Without increasing the overall weight and cost, fatigue cracking due to stress concentration in the rear wheel arch under durable working conditions can be effectively avoided.

[0009] Optionally, the bottom of the first support plate is provided with an overlapping plate, and the lower surface of the overlapping plate is fixed to the mating part.

[0010] Optionally, the mating part is a first mating surface formed at the rear end of the first connecting part, the first mating surface including a planar structure and / or a curved surface structure, the radius of curvature of the curved surface structure being greater than or equal to 400mm.

[0011] Optionally, the lower surface of the lap plate is attached to the first mating surface and fixed by spot welding and structural adhesive.

[0012] Optionally, when the lower surface of the overlapping plate is fixedly attached to the first mating surface, the first mating surface covers the lower surface of the overlapping plate.

[0013] Optionally, it also includes a C-pillar, a connecting plate, and a second support plate. The connecting plate is connected between the C-pillar and the D-pillar. The top end of the second support plate is fixed to the connecting plate, and the bottom end of the second support plate is fixed to the first flange. The second support plate is located in front of the first support plate.

[0014] Optionally, the first flanged portion is further provided with a second mating surface, and the bottom end face of the second support plate is attached to the second mating surface and fixed by spot welding and structural adhesive.

[0015] Optionally, the second mating surface includes a planar structure and / or a curved structure, wherein the radius of curvature of the curved structure is greater than or equal to 400 mm.

[0016] This application also provides a body-in-white, including the rear side panel assembly as described above.

[0017] This application also provides a vehicle including the body-in-white as described above.

[0018] The body-in-white having the rear side panel assembly as described above, and the vehicle having the body-in-white as described above, have similar technical effects to the rear side panel assembly described above, and will not be described again here for the sake of brevity. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the rear side enclosure assembly provided in the embodiments of this application;

[0020] Figure 2 yes Figure 1 Schematic diagram of the structure of the middle and rear wheel arches;

[0021] Figure 3 yes Figure 1 A partial structural diagram of the first support plate and the rear wheel arch in a fixed state;

[0022] Figure 4 This is a schematic diagram showing the positional relationship between the Y-phase plane and the first mating plane;

[0023] Figure 5 This is a structural diagram of the vehicle.

[0024] Appendix Figures 1-5 The reference numerals in the attached figures are explained as follows:

[0025] 1 Rear wheel cover, 11 Body part, 111 Protrusion, 112 Recess, 12 First flange, 121 Second mating surface, 13 First connecting part, 14 Second connecting part, 15 Relief notch, 16 Mating part, 17 Second flange, 171 Positioning part, 172 Positioning hole, 173 Insertion plate, 18 Side edging.

[0026] 2D column;

[0027] 3. First support plate, 31. Edge;

[0028] 4. Second support plate;

[0029] 5C column;

[0030] 6 connecting plates;

[0031] 7 solder joints. Detailed Implementation

[0032] To enable those skilled in the art to better understand the technical solutions of this application, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0033] This application provides a rear side panel assembly, a body-in-white, and a vehicle, wherein the vehicle includes a body-in-white, and the body-in-white includes the rear side panel assembly, as shown below. Figure 1As shown, the rear side panel assembly includes a rear wheel arch 1, a D-pillar 2, and a first support plate 3. The bottom of the first support plate 3 is fixed to the rear wheel arch 1, and the top of the first support plate 3 is fixed to the D-pillar 2. It serves to strengthen the connection between the rear wheel arch 1 and the D-pillar 2 to ensure the overall structural strength. At the same time, the first support plate 3 can also provide support for the side panel and provide mounting points for installing other components.

[0034] The rear wheel arch 1 includes an inner panel and an outer panel. The outer panel includes a body portion 11 and a first flange portion 12. The body portion 11 is a plate with an arc-shaped structure. The first flange portion 12 is provided downward along the outer edge of the body portion 11, and the length of the first flange portion 12 is less than the length of the body portion 11. A first connecting portion 13 is also connected between the first flange portion 12 and the body portion 11 along the length direction. The first connecting portion 13 is provided with an arc-shaped transition surface. The rear end of the first flange portion 12 is also connected to the outer edge of the body portion 11 through a second connecting portion 14, and a clearance notch 15 is formed between the rear side of the first flange portion 12 and the outer side of the body portion 11. The clearance notch 15 is used to provide clearance space for the installation of the vehicle's rear bumper.

[0035] The rear end of the first connecting part 13 has a mating part 16. The mating part 16 is located at the connection between the outer edge of the main body part 11, the inner side of the rear end edge of the first flange part 12, and the inner side of the top edge of the second connecting part 14. Therefore, the location of the mating part 16 is prone to stress concentration. In this embodiment, the bottom of the first support plate 3 is fixed to the mating part 16. This arrangement allows the external force to be transmitted from the first support plate 3 to the rear wheel cover 1 and then transmitted to the surrounding area through the mating part 16. This protects the location of the mating part 16 and prevents the external force from being easily transmitted to the location of the mating part 16 when the bottom of the first support plate 3 is fixed to other positions of the rear wheel cover 1, which could cause stress concentration and deformation or damage at this location.

[0036] Furthermore, after the bottom end of the first support plate 3 is fixed to the mating part 16, the bottom end of the first support plate 3 and the mating part 16 form an integral structure, which can enhance the structural strength at the location of the mating part 16. Therefore, when the bottom of the first support plate 3 is fixed to the mating part 16, it can prevent stress concentration at the location of the mating part 16, thereby protecting the structure of the rear wheel cover 1 and extending its service life.

[0037] In other words, in this embodiment, by fixing the area prone to stress concentration to the bottom of the first support plate 3, without the need for additional reinforcement structures or increasing the thickness of the rear wheel cover 1, stress concentration can be avoided. Without increasing the overall weight and cost, fatigue cracking of the rear wheel cover 1 due to stress concentration under durable working conditions can be effectively avoided.

[0038] like Figure 3 As shown, the bottom of the first support plate 3 is also provided with an overlapping plate 31. The lower surface of the overlapping plate 31 can be attached to the mating part 16 for fixation. When the overlapping plate 31 and the mating part 16 are attached and fixed, the overlapping plate 31 and the mating part 16 can form a structurally stable whole. In this way, the overlapping plate 31 is equivalent to a reinforcing structure set at the location of the mating part 16, so that the location of the mating part 16 forms a double-layer thickened structure. While fixing the first support plate 3 and the mating part 16, it further improves the overall structural strength of the location of the mating part 16.

[0039] like Figure 2 and Figure 3 As shown, the mating part 16 is a first mating surface formed at the rear end of the first connecting part 13. The first mating surface may include a planar structure. The planar structure can avoid stress concentration at this point and facilitate the diffusion of stress to the surrounding area. At the same time, the planar structure can also facilitate the fitting and fixing with the overlapping plate 31, simplifying the fixing process.

[0040] Alternatively, the first mating surface can also be a curved surface with a radius of curvature greater than or equal to 400mm. The radius of curvature of the arc transition surface of the first connecting part 13 is about 25mm-30mm. In other words, the radius of curvature of the first mating surface is much larger than the radius of curvature of other positions of the first connecting part 13. This setting can avoid the concentration of force at this point and facilitate the force to spread to the surrounding area. At the same time, it is easy to achieve a close fit and fixation with the overlapping plate 31, simplifying the fixing process.

[0041] Alternatively, the first mating surface can be configured to include both planar and curved structures, wherein the radius of curvature of the curved structure is greater than or equal to 400 mm, the planar and curved structures transition smoothly, and there are no arc surfaces with a radius of curvature less than 400 mm.

[0042] When planar structures and / or curved surfaces with large radii of curvature are set at locations where stress concentration is likely to occur, the problem of stress concentration at these locations can be effectively avoided, and the stress can be transferred to diffuse the force in the circumferential direction, thereby avoiding fatigue deformation in local areas due to large stress.

[0043] In this embodiment, the overlapping plate 31 and the lower surface and the upper surface of the mating part 16 are fixed by spot welding and structural adhesive. This fixing method can ensure the fixing stability between the mating part 16 and the overlapping plate 31. The overlapping plate 31 and the mating part 16 are fixed to form a stable overall structure, thereby ensuring the overall structural strength of the mating part 16 in the fixed state and forming an effective force transmission path.

[0044] During the structural durability test, the force on the rear of the rear wheel cover 1 will be transmitted through the rear wheel cover 1 to the mating part 16 and the overlapping plate 31, and then to the first support plate 3 to achieve force transfer, avoid the problem of force concentration at the location of the mating part 16, reduce the fatigue stress of the rear wheel cover 1, and meet the performance requirements of the structural durability test.

[0045] There are no restrictions on the specific fixing method between the overlapping plate 31 and the mating part 16. For example, it can be fixed by welding alone. However, fixing by electric welding and structural adhesive can ensure the overall structural stability while facilitating operation.

[0046] When the first mating surface is a planar structure, such as Figure 4 As shown, the angle α between the first mating surface and the Y-plane of the vehicle is approximately 45°-60°. This arrangement facilitates spot welding during installation while ensuring a safe distance between the welding gun and other components. For example, Figure 5 As shown, the Y-phase plane refers to the plane that is set along the front-rear direction and the height direction of the body-in-white, and is located at the middle position in the width direction of the body-in-white.

[0047] like Figure 3 As shown, the overlapping plate 31 includes an edge circumferentially arranged along the bottom of the first support plate 3. Specifically, the overlapping plate 31 can be an integrally formed structure with the first support plate 3 or a structure fixed to the first support plate 3 by welding or other means; no specific limitations are made here. Figure 3 The weld point 7 located on the lap plate 31 in the fixed state is shown.

[0048] When the overlapping plate 31 and the mating part 16 are fixed by welding and structural adhesive, the first mating surface can cover the lower surface of the overlapping plate 31. Specifically, the first mating surface can completely mate with the lower surface of the overlapping plate 31, including its shape, structure, and size. Alternatively, the area of ​​the first mating surface can be larger than the area of ​​the lower surface of the overlapping plate 31. This arrangement ensures sufficient welding area between the first support plate 3 and the rear wheel arch 1, thereby guaranteeing welding stability.

[0049] like Figure 1 As shown, the rear sidewall assembly also includes a C-pillar 5, a connecting plate 6, and a second support plate 4. The connecting plate 6 is connected between the C-pillar 5 and the D-pillar 2. The top end of the second support plate 4 is fixed to the connecting plate 6, and the bottom end of the second support plate 4 is fixed to the rear wheel arch 1. Furthermore, the second support plate 4 is located in front of the first support plate 3. This arrangement further enhances the overall structural strength of the rear sidewall assembly.

[0050] Furthermore, such as Figure 1As shown, the bottom end of the second support plate 4 is welded and fixed to the first flange portion 12. Furthermore, a second mating surface 121 for fixing to the second support plate 4 is provided on the surface of the first flange portion 12. The bottom end face of the second support plate 4 is attached to the second mating surface 121 and fixed by spot welding and structural adhesive. This fixing method ensures the stability of the fixation between the second support plate 4 and the rear wheel arch 1.

[0051] The second mating surface 121 may include a planar structure, or it may be a curved surface with a radius of curvature greater than or equal to 400 mm. Alternatively, the second mating surface 121 may simultaneously include a planar structure and a curved surface structure, wherein the radius of curvature of the curved surface structure may be greater than or equal to 400 mm. The transition between the planar structure and the curved surface structure is smooth, and there are no arc-shaped surfaces with a radius of curvature less than 400 mm. The planar structure or the curved surface structure with a large radius of curvature facilitates spot welding fixation to the bottom end of the second support plate 4.

[0052] The number of second support plates 4 can be set as follows: Figure 1 The two shown can be one, three or more. The number of second mating surfaces 121 of the first flange 12 can be the same as the number of second support plates 4, that is, the bottom end of each second support plate 4 is fixed to the corresponding second mating surface 121, or the bottom end of some second support plates 4 can be fixed to the corresponding second mating surface 121, or the bottom end of some second support plates 4 can be directly fixed to the outer wall surface of the first flange 12.

[0053] like Figure 2 As shown, the upper surface of the body part 11 is also provided with a protrusion 111 and a recess 112, which can be directly formed by stamping. The protrusion 111 and the recess 112 are arranged at intervals along the length direction of the body part 11, and can form reinforcing ribs at corresponding positions of the body part 11, thereby ensuring the overall structural strength of the body part 11. Specifically, the number of protrusions 111 and the number and arrangement of recesses 112 are not specifically limited here.

[0054] like Figure 2 As shown, a second flange 17 is also provided on the inner edge of the body part 11 (i.e. the edge away from the first flange 12). The flange direction of the second flange 17 is opposite to that of the first flange 12, that is, the second flange 17 is provided in the direction of facing upward of the body part 11. The provision of the first flange 12 and the second flange 17 can form reinforcing ribs on both sides of the body part 11 to improve the deformation resistance of the body part 11, thereby effectively enhancing the overall structural strength of the rear wheel cover 1.

[0055] The first flange portion 12 is also provided with a side edging 18 on the side away from the main body portion 11. The side edging 18 is equivalent to a flange structure provided at the edge of the first flange portion 12, which can form a reinforcing rib at the edge of the first flange structure, further ensuring the overall structural strength and bending resistance of the rear wheel cover 1.

[0056] The second flange portion 17 is also provided with two spaced-apart positioning portions 171, each with a positioning hole 172. These two positioning portions 171 are used for positioning and aligning the main body portion 11 during installation. The edge of the second flange portion 17 is also provided with a connector plate 173. During installation, the connector plate 173 can be inserted into the corresponding connector hole to form a preliminary connection. The positioning portions 171 and the connector plate 173 facilitate the assembly operation of the rear wheel cover 1.

[0057] In this embodiment, the main body 11, the first flange 12, the second flange 17, the first connecting part 13 and the second connecting part 14 are all integrally formed structures. The outer plate of the rear wheel cover 1 is an integral structural part formed by stamping, which simplifies the forming process and reduces costs.

[0058] In the description of this application, it should be understood that "upper" refers to the side of the rear side assembly that faces upward along the height direction of the vehicle when it is assembled, "lower" refers to the side that faces downward along the height direction of the vehicle, "front" refers to the side facing the front of the vehicle, "rear" refers to the side facing the rear of the vehicle, "top" refers to the end facing upward, "bottom" refers to the end facing downward, and "outer" refers to the side facing outward from the vehicle.

[0059] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0060] In this application, unless otherwise expressly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0061] The above are merely preferred embodiments of this application. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A rear side panel assembly, characterized in that, Includes rear wheel cover (1), D-pillar (2) and first support plate (3); The rear wheel cover (1) includes a body part (11) and a first flange part (12). The first flange part (12) is disposed downward along the outer edge of the body part (11). A first connecting part (13) is connected between the first flange part (12) and the body part (11) along the length direction. The rear end of the first flange part (12) is connected to the outer edge of the body part (11) through a second connecting part (14). The rear end of the first connecting part (13) is provided with a mating part (16), the top end of the first support plate (3) is fixed to the D column (2), and the bottom end of the first support plate (3) is fixed to the mating part (16).

2. The rear side enclosure assembly according to claim 1, characterized in that, The bottom of the first support plate (3) is provided with an overlap plate (31), and the lower surface of the overlap plate (31) is fixed to the mating part (16).

3. The rear side enclosure assembly according to claim 2, characterized in that, The mating part (16) is a first mating surface formed at the rear end of the first connecting part (13). The first mating surface includes a planar structure and / or a curved surface structure, and the radius of curvature of the curved surface structure is greater than or equal to 400 mm.

4. The rear side enclosure assembly according to claim 3, characterized in that, The lower surface of the lap plate (31) is attached to the first mating surface and fixed by spot welding and structural adhesive.

5. The rear sidewall assembly according to any one of claims 2-4, characterized in that, When the lower surface of the overlapping plate (31) is in contact with and fixed to the first mating surface, the first mating surface covers the lower surface of the overlapping plate (31).

6. The rear sidewall assembly according to any one of claims 1-4, characterized in that, It also includes a C-pillar (5), a connecting plate (6), and a second support plate (4). The connecting plate (6) is connected between the C-pillar (5) and the D-pillar (2). The top of the second support plate (4) is fixed to the connecting plate (6), and the bottom of the second support plate (4) is fixed to the first flange (12). The second support plate (4) is located in front of the first support plate (3).

7. The rear side enclosure assembly according to claim 6, characterized in that, The first flange (12) is also provided with a second mating surface (121), and the bottom end face of the second support plate (4) is attached to the second mating surface (121) and fixed by spot welding and structural adhesive.

8. The rear side enclosure assembly according to claim 7, characterized in that, The second mating surface (121) includes a planar structure and / or a curved structure, wherein the radius of curvature of the curved structure is greater than or equal to 400 mm.

9. A white body, characterized in that, Includes the rear sidewall assembly as described in any one of claims 1-8.

10. A vehicle, characterized in that, Including the body-in-white as described in claim 9.

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