Automobile body rear wheel cover and C ring reinforcing structure, automobile body structure and automobile

Abstract

The utility model provides an automobile body rear wheel cover and C ring reinforcing structure, an automobile body structure and an automobile, and relates to the technical field of automobiles, the structure is provided with a first reinforcing piece, the first reinforcing piece serves as a C column reinforcing plate, a main body of the first reinforcing piece is connected with a C column inner plate, and the first reinforcing piece extends backwards to the position of a wheel cover through an extending part. The protruding part of the rear wheel cover is supported, so that the structure is in lap joint with the automobile body in different directions, the lap joint surface of the structure and each structure of the automobile body is kept as large as possible, strong support for the automobile body is ensured, and an automobile body C-ring structure which is strongly related to automobile body important parameters such as automobile torsional rigidity and lightweight coefficient is reinforced; and the local strength of the rear structure of the vehicle body, the dynamic rigidity of a shock absorber mounting point, the torsional rigidity, road noise, vibration response and rear collision performance are improved in all directions.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobiles, and more specifically relates to a vehicle body rear wheel cover and C-ring reinforcement structure, a vehicle body structure and a vehicle. Background Art

[0002] Currently, new energy vehicles are developing rapidly, driving competition and escalating consumer demands. Consumers are shifting from basic requirements like appearance and cost-effectiveness to specialized indicators like overall vehicle performance and comfort. Vehicle performance indicators, whether collision safety, NVH, or durability, are closely linked to stiffness and modality. A common approach to improving modality and stiffness is to strengthen the A and B pillars, which are sensitive areas for side and offset impacts. However, due to battery pack space and range requirements, pure electric vehicle power battery structures are generally large, resulting in limited body layouts and relatively poor bending and torsional stiffness, as well as strength. This places higher demands on the rear structure.

[0003] The C-pillar, rear wheel arch, and C-ring structures within the rear vehicle body structure are particularly critical. The rear wheel arch structure not only improves its own stiffness and strength but also contributes to improved shock absorber mounting point dynamic stiffness. The stiffness of the C-pillar and C-ring structures influences several key NVH and durability performance characteristics, including rear vehicle torsion, lateral stiffness, suspension mounting point stiffness, and squeak and squeak resistance. Strengthening the C-ring stiffness significantly improves vibration response and mid- and high-frequency road noise. Strengthening the rear wheel arch and C-ring stiffness, thereby comprehensively improving the local strength of the rear vehicle body structure, has become a pressing technical challenge in this field. Utility Model Content

[0004] The purpose of the utility model is to address the deficiencies of the existing technology and provide a vehicle body rear wheel cover and C-ring reinforcement structure, a vehicle body structure and a vehicle, so as to strengthen the rigidity of the rear wheel cover and the vehicle body C-ring and optimize the force transmission path.

[0005] In order to achieve the above-mentioned purpose, the utility model provides a vehicle body rear wheel cover and C-ring reinforcement structure, a vehicle body structure and a vehicle.

[0006] The vehicle body rear wheel cover and C-ring reinforcement structure includes: a first reinforcement member, the first reinforcement member is a C-pillar reinforcement plate, the main body of the first reinforcement member is connected to the C-pillar inner plate, the first reinforcement member has an extension portion extending backward, and the lower part of the extension portion is relatively connected to the outward protruding part of the first rear wheel cover outer plate along the Z direction.

[0007] The structure also includes: a second reinforcement, the upper part of which is connected to the inner panel of the C-pillar, the middle part is relatively connected to the upper part of the first rear wheel cover inner panel reinforcement plate along the Y direction, and is connected to the rear first rear wheel cover outer panel, and the lower part is relatively connected to the outward protruding part of the first rear wheel cover outer panel along the Z direction.

[0008] The structure further includes: a third reinforcement member, which is arranged along the Y direction and connects the first reinforcement member and the guide rail reinforcement plate in the sliding door.

[0009] The first reinforcement is in an outwardly protruding U shape.

[0010] The cross section of the second reinforcement is a U-shape protruding outward.

[0011] The first reinforcement is provided with a plurality of weight-reducing holes.

[0012] The second reinforcement is provided with a plurality of weight-reducing holes.

[0013] The vehicle body structure comprises the vehicle body rear wheel cover and the C-ring reinforcement structure of the utility model.

[0014] The vehicle body structure is a vehicle body structure in which at least one rear door is a sliding door.

[0015] A car comprises the vehicle body structure of the utility model.

[0016] The utility model provides a vehicle body rear wheel cover and C-ring reinforcement structure, which has the following beneficial effects: the structure has a first reinforcement member, the first reinforcement member serves as a C-pillar reinforcement plate, the main body of the first reinforcement member is connected to the C-pillar inner plate, and the first reinforcement member is extended rearward to the wheel cover position through an extension portion, which not only increases the overlap with the C-pillar, but also forms support for the protruding part of the rear wheel cover, so that this structure forms an overlap relationship with the vehicle body in different directions, and the overlap surface with each structure of the vehicle body is kept as large as possible, ensuring strong support for the vehicle body, and strengthening the vehicle body C-ring structure that is strongly related to important vehicle body parameters such as automobile torsional stiffness and lightweight coefficient, thereby comprehensively improving the local strength of the rear structure of the vehicle body, shock absorber installation point dynamic stiffness, torsional stiffness, road noise, vibration response and rear collision performance.

[0017] Other features and advantages of the present invention will be described in detail in the subsequent detailed description of the embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and other objects, features and advantages of the present invention will become more apparent through a more detailed description of exemplary embodiments of the present invention in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments of the present invention.

[0019] Figure 1 The schematic structure of a vehicle body rear wheel cover and C-ring reinforcement structure according to an embodiment of the utility model is shown. Figure 1 .

[0020] Figure 2 The schematic structure of a vehicle body rear wheel cover and C-ring reinforcement structure according to an embodiment of the utility model is shown. Figure 2 .

[0021] Figure 3 The schematic structure of a vehicle body rear wheel cover and C-ring reinforcement structure according to an embodiment of the utility model is shown. Figure 3 .

[0022] Figure 4 The schematic structure of a vehicle body rear wheel cover and C-ring reinforcement structure according to an embodiment of the utility model is shown. Figure 4 .

[0023] Figure 5 A schematic structural diagram of a vehicle body rear wheel cover and a third reinforcement member of a C-ring reinforcement structure according to an embodiment of the present utility model is shown.

[0024] Figure 6 A schematic diagram of the force transmission path A of a vehicle body rear wheel cover and a C-ring reinforcement structure according to an embodiment of the present utility model is shown.

[0025] Figure 7 A schematic diagram of the B force transmission path of a vehicle body rear wheel cover and a C-ring reinforcement structure according to an embodiment of the present utility model is shown.

[0026] Figure 8 A schematic diagram of the C force transmission path of a vehicle body rear wheel cover and a C-ring reinforcement structure according to an embodiment of the present utility model is shown.

[0027] Description of reference numerals:

[0028] 1. First reinforcement; 11. Extension; 2. Second reinforcement; 3. Third reinforcement; 4. Sliding door center rail reinforcement; 5. First rear wheelhouse inner panel reinforcement; 6. First rear wheelhouse outer panel; 7. Second rear wheelhouse inner panel reinforcement; 8. Upper middle cross member of the rear floor. DETAILED DESCRIPTION

[0029] The following describes preferred embodiments of the present invention in greater detail. Although preferred embodiments of the present invention are described below, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. Rather, these embodiments are provided to make the present invention more thorough and complete, and to fully convey the scope of the present invention to those skilled in the art.

[0030] The utility model provides a vehicle body rear wheel cover and C ring reinforcement structure, such as Figure 1-4As shown, the structure includes a first reinforcement member 1, which serves as a C-pillar reinforcement plate. The main body of the first reinforcement member 1 is connected to the inner panel of the C-pillar. The first reinforcement member 1 has an extension portion 11 extending rearward. The lower portion of the extension portion 11 is relatively connected to the outward protrusion of the first rear wheelhouse outer panel 6 along the Z direction. Specifically, the first reinforcement member 1 extends rearward to the wheelhouse position through the extension portion 11, which not only increases the overlap with the C-pillar but also provides support for the protruding portion of the rear wheelhouse. This allows the structure to overlap with the vehicle body in different directions, maintaining the overlap surface with various vehicle body structures as large as possible to ensure strong support for the vehicle body. This not only compensates for the shortcomings of the vehicle body's insufficient structural rigidity, but also strengthens the vehicle body's C-ring structure, which is strongly related to important vehicle body parameters such as torsional rigidity and lightweight coefficient.

[0031] Furthermore, the structure includes a second reinforcement member 2, the upper portion of which is connected to the C-pillar inner panel, the middle portion of which is connected to the upper portion of the first rear wheelhouse inner panel reinforcement plate 5 along the Y direction, and is connected to the rear first rear wheelhouse outer panel 6, and the lower portion of which is connected to the outwardly protruding portion of the first rear wheelhouse outer panel 6 along the Z direction. Specifically, the upper portion of the second reinforcement member 2 is welded to the C-pillar inner panel, the middle portion is welded to the first rear wheelhouse inner panel reinforcement plate 5 and the first rear wheelhouse outer panel 6 along the Y direction, and the lower portion is welded to the outwardly protruding portion of the first rear wheelhouse outer panel 6 along the Z direction. The second reinforcement member 2 optimizes the local stiffness of the rear wheelhouse and strengthens its support for the first rear wheelhouse outer panel 6 in the Z direction. The second rear wheelhouse inner panel reinforcement plate 7, the middle cross beam 8 on the upper part of the rear floor, and the first rear wheelhouse inner panel reinforcement plate 5 form the body C-ring. The second reinforcement 2 is welded to the upper part of the first rear wheelhouse inner panel reinforcement plate 5 in the Y direction, and has a direct supporting relationship with the body C-ring. The overlapping surface with the various structures of the body is kept as large as possible to ensure strong support for the body, thereby strengthening the body C-ring stiffness and optimizing the dynamic stiffness of the rear shock absorber installation point of the body.

[0032] Further, such as Figure 5 As shown, the structure also includes a third reinforcement member 3, arranged along the Y-direction, connecting the first reinforcement member 1 and the sliding door center rail reinforcement plate 4. Specifically, the third reinforcement member 3 connects the first reinforcement member 1 and the sliding door center rail reinforcement plate 4, connecting the relatively weak sliding door rail structure to the reinforced vehicle body structure, significantly improving the rigidity of the sliding door rail structure. Furthermore, while maintaining a compact structure and minimal material consumption, the third reinforcement member 3 retains only two welded edges on the overlapping side, ensuring lightweight performance while maintaining the reinforcement's inherent performance.

[0033] Further, such as Figure 4As shown, the first reinforcement 1 is a U-shape protruding outward, and the cross-section of the second reinforcement 2 is a U-shape protruding outward, which raises the Y-direction cavity structure and forms an M-shaped reinforcement structure locally. The M-shaped reinforcement structure optimizes multiple force transmission paths, strengthens the transmission paths of the rear wheel arch, body side and body C ring, is beneficial to side collision, durability and vehicle torsional mode, and further optimizes NVH performance and side collision performance. Figure 6-8 The three force transmission paths involved in this M-shaped reinforcement structure are shown. Due to the reinforcing support of the C-ring structure of the vehicle body by the first reinforcement 1 and the second reinforcement 2, the stiffness of the C-ring structure of the vehicle body on the A force transmission path is improved, and the torsional mode of the whole vehicle is improved; the support reinforcement of the rear wheel cover by the first reinforcement 1 and the second reinforcement 2 optimizes the force transmission path B between the rear wheel cover and the vehicle body, which is beneficial to collision and durability performance; the C force transmission path connects the sliding door guide structure with the first reinforcement 1 and the rear wheel cover of the vehicle body through the third reinforcement 3, so that the force can be transmitted from the sliding door guide structure to the outer panel structure of the vehicle body, reducing its excitation to the internal panels of the vehicle body.

[0034] Furthermore, a plurality of weight-reducing holes are provided in the first reinforcement member 1 and a plurality of weight-reducing holes are provided in the second reinforcement member 2. Specifically, as many weight-reducing holes as possible are provided in the low-sensitivity area, thereby ensuring the lightweight performance while ensuring the performance itself.

[0035] Furthermore, the present invention provides a vehicle body structure comprising the present invention's rear wheel arch and C-ring reinforcement structure. Specifically, this vehicle body structure reinforcement comprehensively improves the local strength of the rear structure, shock absorber mounting point stiffness, torsional stiffness, road noise, vibration response, and rear-end collision performance. It also provides multiple force transmission paths, facilitating side impact resistance, durability, and overall vehicle torsional mode control.

[0036] Furthermore, the vehicle body structure is a vehicle body structure in which at least one rear door is a sliding door. Specifically, this vehicle body structure is particularly suitable for vehicle bodies with sliding doors. The third reinforcement member 3 connects the first reinforcement member 1 and the sliding door middle guide rail reinforcement plate 4, connecting the weaker sliding door guide rail structure with the reinforced vehicle body structure, significantly improving the rigidity of the sliding door guide rail structure.

[0037] Furthermore, an automobile is characterized by including the vehicle body structure of the present invention. Specifically, the vehicle body structure has a high degree of universality, and subsequent passenger vehicle models can draw on this structure for platform development.

[0038] While various embodiments of the present invention have been described above, the above description is intended to be illustrative, not exhaustive, and not limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments.

Claims

1. A vehicle body rear wheel cover and C-ring reinforcement structure, characterized in that: The structure includes: A first reinforcement member (1), wherein the first reinforcement member (1) is a C-pillar reinforcement plate, the main body of the first reinforcement member (1) is connected to the C-pillar inner plate, the first reinforcement member (1) has an extension portion (11) extending rearward, and the lower portion of the extension portion (11) is relatively connected to the outward protruding portion of the first rear wheel cover outer plate (6) along the Z direction.

2. The vehicle body rear wheel cover and C-ring reinforcement structure according to claim 1, characterized in that: The structure also includes: A second reinforcement member (2), wherein the upper portion of the second reinforcement member (2) is connected to the inner plate of the C-pillar, the middle portion is relatively connected to the upper portion of the first rear wheel cover inner plate reinforcement plate (5) along the Y direction, and is connected to the rear first rear wheel cover outer plate (6), and the lower portion is relatively connected to the outward protruding portion of the first rear wheel cover outer plate (6) along the Z direction.

3. The vehicle body rear wheel cover and C-ring reinforcement structure according to claim 1, characterized in that: The structure also includes: A third reinforcement member (3) is arranged along the Y direction and connects the first reinforcement member (1) and the guide rail reinforcement plate (4) in the sliding door.

4. The vehicle body rear wheel cover and C-ring reinforcement structure according to claim 1, characterized in that: The first reinforcement member (1) is U-shaped and protrudes outward.

5. The vehicle body rear wheel cover and C-ring reinforcement structure according to claim 2, characterized in that: The cross section of the second reinforcement member (2) is a U-shape protruding outward.

6. The vehicle body rear wheel cover and C-ring reinforcement structure according to claim 1, characterized in that: The first reinforcement member (1) is provided with a plurality of weight-reducing holes.

7. The vehicle body rear wheel cover and C-ring reinforcement structure according to claim 2, characterized in that: The second reinforcement member (2) is provided with a plurality of weight-reducing holes.

8. A vehicle body structure comprising the rear wheel cover and C-ring reinforcement structure according to any one of claims 1 to 7.

9. The vehicle body structure according to claim 8, characterized in that: The vehicle body structure is a vehicle body structure in which at least one rear door is a sliding door.

10. An automobile, characterized in that: The vehicle body structure includes the vehicle body structure described in claim 8 or 9.

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