D column assembly and vehicle
By installing an inner panel reinforcement on the D-pillar inner panel, the vibration and resonance noise problem in the D-pillar assembly was solved, achieving noise reduction and structural strength improvement, thereby enhancing vehicle comfort and safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-21
- Publication Date
- 2026-04-03
AI Technical Summary
In the prior art, the narrow cavity structure of the D-pillar assembly causes the rear wheel vibration to overlap with the natural frequency when the vehicle is in motion, generating resonance noise that affects vehicle comfort.
By installing an inner plate reinforcement on the inner plate of the D-pillar, the local modes are enhanced, the natural frequency is increased, the difference between the excitation frequency and the natural frequency is reduced, and resonance is alleviated.
It effectively reduces vehicle noise during driving, improves vehicle NVH performance and comfort, and enhances structural strength and safety.
Smart Images
Figure CN224075626U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of vehicle technology, and more particularly to a D-pillar assembly and a vehicle. Background Technology
[0002] In modern society, with the increasing popularity of vehicles and the improvement of living standards, people have higher and higher demands for vehicle performance and quality. The D-pillar assembly is one of the key structural components that make up the vehicle's body frame. Located at the rear of the vehicle, it is a vertical pillar structure that connects the roof and the side of the body. It not only supports the body but also helps to improve the vehicle's stability and safety.
[0003] In the prior art, the inner panel of the D-pillar, the rear drainage channel of the side panel, and the outer panel of the side panel in the D-pillar assembly form a narrow and elongated cavity structure. This narrow and elongated cavity structure is located above the rear wheel of the vehicle. During vehicle operation, the vibration generated by the rear wheel and the road surface will be transmitted to the D-pillar assembly. The frequency of this vibration forms an excitation frequency that overlaps with the natural frequency of the vibration of the narrow and elongated cavity, resulting in a resonance phenomenon. The noise generated is amplified in the narrow and elongated cavity and diffuses into the passenger compartment of the vehicle, affecting the comfort of the vehicle. Utility Model Content
[0004] In view of this, this application provides a D-pillar assembly and vehicle, which changes the vibration frequency of the D-pillar inner panel by means of an inner panel reinforcement, which helps to alleviate resonance, reduce vehicle noise during driving, and improve vehicle comfort.
[0005] To achieve the above objectives, the technical solution of this application embodiment is implemented as follows:
[0006] On one hand, this application provides a D-pillar assembly for a vehicle, comprising: an outer side panel, an inner D-pillar panel, a drainage channel, a rear pillar, and an inner panel reinforcement; the top ends of the outer side panel and the inner D-pillar panel are respectively connected to the two sides of the drainage channel, and the inner D-pillar panel is also connected to the outer side panel, so that the outer side panel, the inner D-pillar panel, and the drainage channel together form a buffer cavity; the inner panel reinforcement is fixedly connected to the inner D-pillar panel; one end of the rear pillar is connected to the inner D-pillar panel, and the other end is connected to the vehicle's chassis suspension.
[0007] The D-pillar assembly of this invention forms a buffer cavity through the outer side panel, the inner D-pillar panel, and the water channel. When a side collision occurs, the buffer cavity deforms to absorb part of the collision energy, while simultaneously dispersing the impact force to the inner D-pillar panel and other structures of the vehicle body. This reduces deformation within the passenger compartment, improving vehicle safety and collision resistance. To enhance the support of the inner D-pillar panel, a rear pillar is also provided. The two ends of the rear pillar are connected to the inner D-pillar panel and the vehicle's chassis suspension, respectively. This allows the inner D-pillar panel to disperse the impact force to the vehicle chassis via the rear pillar, further improving the structural strength of the D-pillar assembly. When a vehicle is in motion, the vibrations generated by the rear wheels and the road surface are transmitted to the chassis suspension, and then through the rear pillar to the D-pillar inner panel and the buffer chamber. Since the D-pillar assembly itself vibrates during vehicle movement, the D-pillar inner panel also vibrates. This vibration forms its natural frequency, which, along with the vibration frequency transmitted from the rear wheels to the buffer chamber, forms the excitation frequency. When the excitation frequency is close to or equal to the natural frequency, resonance occurs, generating significant noise. This noise is further diffused through the buffer chamber and transmitted into the passenger compartment, affecting vehicle comfort. Therefore, it is necessary to install an inner panel reinforcement on the D-pillar inner panel. This reinforcement enhances the local modes of the D-pillar inner panel, thereby increasing its natural frequency. When the rear pillar transmits the vibrations from the rear wheels to the D-pillar inner panel, it increases the difference between the natural frequency and the excitation frequency, thus mitigating resonance and reducing noise during vehicle operation, improving the driving experience.
[0008] In one possible implementation, the inner plate reinforcement is disposed on the side surface of the inner plate of the D-pillar facing away from the buffer cavity.
[0009] This helps reduce manufacturing and assembly difficulties, provides sufficient installation space for inner panel reinforcements, avoids interference from side panel and other structures during assembly, and helps improve the production efficiency of the D-pillar assembly.
[0010] In one possible implementation, the side panel includes a rear wheel hump panel area extending into the tire space of the vehicle, and the D-pillar inner panel includes a first area and a second area distributed sequentially from top to bottom. The first area is located above the rear wheel hump panel area and is spaced apart from the side panel, and the second area is opposite to and connected to the rear wheel hump panel area. The inner panel reinforcement is disposed in the first area.
[0011] Thus, the main overlap area between the vibration of the rear wheel and the road surface and the vibration of the D-pillar inner panel is in the first region. Therefore, the inner panel reinforcement can be fixed in the first region to ensure that the inner panel reinforcement can increase the natural frequency of the D-pillar inner panel vibration, thereby more effectively alleviating resonance and reducing the noise generated during vehicle operation.
[0012] In one possible implementation, the inner panel reinforcement includes a main body and an edge portion, the edge portion being welded to the inner panel of the D-pillar to form a plurality of weld points distributed circumferentially along the main body, and a cavity being formed between the main body and the inner panel of the D-pillar.
[0013] In this way, the stability of the connection between the inner panel reinforcement and the D-pillar inner panel can be ensured. The cavity formed between the main body and the D-pillar inner panel can absorb some energy when the D-pillar inner panel is impacted, reduce stress concentration and prevent the structure of the D-pillar inner panel from being damaged, which is beneficial to improving the vehicle's collision resistance. On the other hand, the cavity can further improve the regulation of the vibration of the D-pillar inner panel, thereby further increasing the difference between the natural frequency and the excitation frequency, reducing resonance, reducing noise and improving the comfort of the vehicle.
[0014] In one possible implementation, it further includes: a rear wheel hump inner plate, the rear wheel hump inner plate being disposed on the side of the D-pillar inner plate facing away from the side panel, the top end of the rear wheel hump inner plate being connected to a first area of the D-pillar inner plate, the bottom end of the rear wheel hump inner plate being connected to the vehicle's chassis suspension, and being spaced apart from the second area and together forming the tire space.
[0015] This design protects the rear wheels, preventing interference from surrounding structures or external objects during tire operation and improving vehicle stability. Simultaneously, the inner plates of the rear wheel hump connect to the first area and the chassis suspension at both ends, forming a robust support structure that enhances structural strength and ensures vehicle safety.
[0016] In one possible implementation, the D-pillar inner panel includes a first panel and a second panel that are sequentially arranged and spliced from front to back along the front-rear direction of the vehicle. The inner panel reinforcement is located at the connection between the first panel and the second panel and is connected to the first panel and the second panel respectively. The area of the portion of the inner panel reinforcement opposite to the first panel is smaller than the area of the portion of the inner panel reinforcement opposite to the second panel.
[0017] This design improves the stability of the connection between the first and second plates, enhances the modal characteristics at the connection point, thereby altering the natural frequency, preventing resonance, reducing noise, and improving vehicle ride comfort. The area of the inner plate reinforcement relative to the second plate is set to be larger than its area relative to the first plate to ensure that the inner plate reinforcement can cover the overlapping area of rear wheel vibration and D-pillar inner plate vibration, thus improving the noise reduction effect of the inner plate reinforcement.
[0018] In one possible implementation, the rear pillar extends vertically along the surface of the inner plate of the rear wheel hump, the rear pillar is welded to the inner plate of the rear wheel hump, the top end of the rear pillar is connected to the first plate, the bottom end of the rear pillar is connected to the chassis suspension of the vehicle, and a cavity is defined on the inner side of the rear pillar.
[0019] In this way, the connection between the rear pillar and the chassis suspension can disperse and mitigate the impact and vibration received by the chassis suspension, which helps improve the working stability of the chassis suspension and extend its service life. In addition, a cavity is formed between the rear pillar and the inner plate of the rear wheel hump. When the vehicle is involved in a side collision, the collapse of this cavity can absorb some energy, thereby reducing the deformation of the passenger compartment, which helps to protect the survival space inside the passenger compartment and improves the overall collision resistance and safety of the vehicle.
[0020] In one possible implementation, the inner plate reinforcement is spaced apart from the rear column, and the distance between the inner plate reinforcement and the rear column is 20mm-40mm.
[0021] This design allows for ample assembly space for the inner panel reinforcement, which improves the assembly efficiency of the D-pillar assembly. It also prevents the inner panel reinforcement from colliding with the rear pillar during vehicle operation, thus avoiding noise and ensuring a better driving experience.
[0022] In one possible implementation, the thickness of the inner panel reinforcement is 1.7mm-2.5mm; and / or, the thickness of the outer side panel is 0.5mm-1mm; and / or, the thickness of the inner panel of the D-pillar is 0.5mm-1mm; and / or, the thickness of the water channel is 0.5mm-1mm; and / or, the thickness of the rear column is 0.5mm-1mm.
[0023] In this way, the thickness of the inner panel reinforcement contrasts sharply with that of the outer side panel, the inner D-pillar panel, the water channel, and the rear pillar. This effectively increases the natural frequency of vibration at the connection between the rear pillar and the inner D-pillar panel, thereby avoiding the excitation frequency from the rear wheel vibration, preventing resonance, and improving the quietness and comfort of the vehicle's passenger compartment.
[0024] On the other hand, this application also provides a vehicle including any of the aforementioned D-pillar assemblies.
[0025] The vehicle of this utility model, by using the aforementioned D-pillar assembly, can reduce the noise generated by the D-pillar assembly during vehicle operation while ensuring the structural strength of the D-pillar assembly and the vehicle's collision resistance, thereby improving the comfort of vehicle passengers. Attached Figure Description
[0026] Figure 1 This is a schematic diagram of the D-pillar assembly according to an embodiment of the present invention;
[0027] Figure 2 This is a diagram showing the usage state of the D-pillar assembly according to an embodiment of this utility model;
[0028] Figure 3 yes Figure 2 A structural diagram from another angle;
[0029] Figure 4 yes Figure 1 Sectional view along axis AA;
[0030] Figure 5 yes Figure 4 A magnified view of a section at point E in the middle;
[0031] Figure 6 for Figure 3 BB-direction sectional view;
[0032] Figure 7 for Figure 6 A magnified view of a section at point F in the middle;
[0033] Figure 8 for Figure 3 CC-direction sectional view.
[0034] Figure label:
[0035] 100-D pillar assembly;
[0036] 110 - Side panel outer panel; 111 - Rear wheel hump outer panel area;
[0037] 120-D-Column inner panel; 121-First panel; 1211-First region; 1212-Second region; 122-Second panel;
[0038] 130 - Water trough body;
[0039] 140 - Rear Post;
[0040] 150 - Inner plate reinforcement; 151 - Main body; 152 - Edge;
[0041] 160-Buffer chamber;
[0042] 170 - Rear wheel hump inner plate; 171 - Tire space;
[0043] 10-Vehicle; 11-Chassis and suspension; 12-Rear wheel. Detailed Implementation
[0044] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the specific technical solutions of this application will be further described in detail below with reference to the accompanying drawings of the embodiments of this application. The following embodiments are used to illustrate this application, but are not intended to limit the scope of this application.
[0045] In the embodiments of this application, 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 indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of this application, unless otherwise stated, "multiple" means two or more.
[0046] Furthermore, in the embodiments of this application, directional terms such as "upper," "lower," "left," and "right" are defined relative to the orientation of the components shown in the accompanying drawings. It should be understood that these directional terms are relative concepts, used for relative description and clarification, and can change accordingly depending on the orientation of the components in the accompanying drawings.
[0047] In the embodiments of this application, unless otherwise explicitly specified and limited, the term "connection" should be interpreted broadly. For example, "connection" can mean a fixed connection, a detachable connection, or an integral part; it can mean a direct connection or an indirect connection through an intermediate medium.
[0048] In embodiments of this application, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.
[0049] In the embodiments of this application, the terms "exemplary" or "for example" are used to indicate that something is an example, illustration, or description. Any embodiment or design that is described as "exemplary" or "for example" in the embodiments of this application should not be construed as being more preferred or advantageous than other embodiments or design. Specifically, the use of the terms "exemplary" or "for example" is intended to present the relevant concepts in a specific manner.
[0050] In the prior art, the inner panel of the D-pillar, the rear drainage channel of the side panel, and the outer panel of the side panel in the D-pillar assembly of a vehicle form a long and narrow cavity structure. This long and narrow cavity structure is located above the rear wheel of the vehicle. During the vehicle's operation, the vibration generated by the rear wheel and the road surface is transmitted to the D-pillar assembly. The frequency of this vibration forms an excitation frequency that overlaps with the natural frequency of the vibration of the long and narrow cavity, resulting in a resonance phenomenon. The noise generated is amplified in the long and narrow cavity and diffuses into the passenger compartment of the vehicle, affecting the comfort of the vehicle.
[0051] In view of this, this application provides a D-pillar assembly that forms a buffer cavity through the outer side panel, the inner D-pillar panel, and the water channel. When a side collision occurs, the buffer cavity deforms to absorb part of the energy generated by the collision, while dispersing the collision force to the inner D-pillar panel and other structures of the vehicle body, thereby reducing deformation within the passenger compartment and improving vehicle safety and collision resistance. To enhance the support of the inner D-pillar panel, a rear pillar is also provided. The two ends of the rear pillar are connected to the inner D-pillar panel and the vehicle's chassis suspension, respectively. Thus, the inner D-pillar panel can disperse the impact force received by the rear pillar to the vehicle chassis, further improving the structural strength of the D-pillar assembly. When a vehicle is in motion, the vibrations generated by the rear wheels and the road surface are transmitted to the chassis suspension, and then through the rear pillar to the D-pillar inner panel and the buffer chamber. Since the D-pillar assembly itself vibrates during vehicle movement, the D-pillar inner panel also vibrates. This vibration forms its natural frequency, which, along with the vibration frequency transmitted from the rear wheels to the buffer chamber, forms the excitation frequency. When the excitation frequency is close to or equal to the natural frequency, resonance occurs, generating significant noise. This noise is further diffused through the buffer chamber and transmitted into the passenger compartment, affecting vehicle comfort. Therefore, it is necessary to install an inner panel reinforcement on the D-pillar inner panel. This reinforcement enhances the local modes of the D-pillar inner panel, thereby increasing its natural frequency. When the rear pillar transmits the vibrations from the rear wheels to the D-pillar inner panel, it increases the difference between the natural frequency and the excitation frequency, thus mitigating resonance and reducing noise during vehicle operation, improving the driving experience.
[0052] It should be noted that the D-pillar assembly provided in this application embodiment can be applied to various different vehicles.
[0053] refer to Figures 1 to 4 As shown, in one aspect, this application provides a D-pillar assembly 100 for a vehicle 10, including: an outer side panel 110, an inner D-pillar panel 120, a drainage channel 130, a rear pillar 140, and an inner panel reinforcement 150; the top of the outer side panel 110 and the top of the inner D-pillar panel 120 are respectively connected to the two sides of the drainage channel 130, and the inner D-pillar panel 120 is also connected to the outer side panel 110, so that the outer side panel 110, the inner D-pillar panel 120, and the drainage channel 130 together form a buffer cavity 160.
[0054] The outer side panel 110 covers the outer side of the vehicle body, providing appearance and basic strength. The inner D-pillar panel 120 connects with the outer side panel 110 to provide support and improve the structural strength of the vehicle body. When the vehicle 10 is involved in a side collision, the outer side panel 110 wrinkles or crushes, thereby absorbing part of the energy generated by the impact and reducing the deformation inside the passenger compartment of the vehicle 10. At the same time, the outer side panel 110 transmits the impact force to the inner D-pillar panel 120, and then to other parts of the vehicle body through the inner D-pillar panel 120, thereby dispersing the impact force to various parts of the vehicle body and avoiding local stress concentration that could lead to damage. This helps to improve the collision resistance of the vehicle 10 and enhance the safety of the vehicle 10.
[0055] Further reference Figure 2 One end of the rear pillar 140 is connected to the inner panel 120 of the D-pillar, and the other end is connected to the chassis suspension 11 of the vehicle 10. In this way, when the vehicle 10 is involved in a collision, the inner panel 120 of the D-pillar can transfer the impact force to the chassis through the rear pillar 140, thereby further dispersing the impact force, reducing the deformation inside the passenger compartment, preserving sufficient survival space inside the passenger compartment, and improving the safety of the occupants inside the vehicle 10. However, since the suspension is located above the rear wheels 12 of the vehicle 10, when the vehicle 10 is driving normally, the vibration generated between the rear wheels 12 and the road surface will be transmitted to the inner panel 120 of the D-pillar through the rear pillar 140. The vibration frequency transmitted to the inner panel 120 of the D-pillar forms the excitation frequency, while the vibration frequency of the D-pillar assembly 100 itself forms the natural frequency. Since the two vibrations partially overlap in the buffer cavity 160, and the excitation frequency is close to or equal to the natural frequency, a resonance phenomenon will occur in the buffer cavity 160, generating a large noise. Since the cavity is a large cavity, the noise is amplified and diffused into the passenger compartment due to the "hollow" effect, causing the occupants of the vehicle 10 to hear a large noise, affecting the driving experience of the vehicle 10.
[0056] Therefore, in order to alleviate resonance, an inner panel reinforcement 150 can be provided, which is fixedly connected to the D-pillar inner panel 120. The inner panel reinforcement 150 can be made of a material with greater weight and structural strength. The specific shape and material are not limited in this application embodiment and can be reasonably selected according to actual needs. The inner panel reinforcement 150 can enhance the modal characteristics of the D-pillar inner panel 120, thereby increasing the natural frequency of the D-pillar inner panel 120. This can increase the difference between the excitation frequency and the natural frequency, thereby alleviating resonance, which is beneficial to reducing noise in the passenger compartment, improving the NVH (Noise, Vibration, and Harshness) performance of the vehicle 10, and improving the comfort of the vehicle 10.
[0057] Meanwhile, placing the inner panel reinforcement 150 on the inner panel 120 of the D-pillar also helps to strengthen the structural strength of the inner panel 120 of the D-pillar. When the inner panel 120 of the D-pillar is impacted, the impact force is dispersed to a wider range, avoiding structural damage due to local stress concentration. This can improve the support of the D-pillar assembly 100 and ensure the safety of the vehicle 10.
[0058] Among them, the inner plate reinforcement 150, the side outer plate 110, the D-pillar inner plate 120, the water channel body 130 and the rear column 140 can all be integrally formed by cold stamping of thin plates and integrated together by spot welding to form the D-pillar assembly 100. Of course, the specific materials, manufacturing methods and connection methods of the inner plate reinforcement 150, the side outer plate 110, the D-pillar inner plate 120, the water channel body 130 and the rear column 140 are not limited in this application embodiment and can be reasonably selected according to actual needs.
[0059] See also some possible implementation methods. Figures 1 to 4 As shown, in this embodiment of the application, the inner plate reinforcement 150 is disposed on the side surface of the inner plate 120 of the D-pillar facing away from the buffer cavity 160.
[0060] This helps reduce manufacturing and assembly difficulties, provides sufficient installation space for the inner panel reinforcement 150, avoids interference from structures such as the side panel 110 during assembly, and helps improve the production efficiency of the D-pillar assembly 100.
[0061] See also some possible implementation methods. Figures 1 to 4 As shown, the side panel 110 of this embodiment includes a rear wheel hump panel region 111 extending into the tire space 171 of the vehicle 10. The D-pillar inner panel 120 includes a first region 1211 and a second region 1212 distributed from top to bottom. The first region 1211 is located above the rear wheel hump panel region 111 and is spaced apart from the side panel 110. The second region 1212 is opposite to and connected to the rear wheel hump panel region 111. The inner panel reinforcement 150 is disposed in the first region 1211.
[0062] In a specific implementation, the second region 1212 is connected to the rear wheel hump outer plate region 111, which helps to enhance the structural strength of the side panel 110 at the rear wheel hump outer plate. The first region 1211 corresponds to the buffer cavity 160, and the main overlap area between the vibration between the rear wheel 12 and the road surface and the vibration of the D-pillar inner plate 120 is in the first region 1211. Therefore, the inner plate reinforcement 150 can be fixed in the first region 1211 to ensure that the inner plate reinforcement 150 can increase the natural frequency of the vibration of the D-pillar inner plate 120, thereby more effectively alleviating resonance and reducing the noise generated during the driving of the vehicle 10.
[0063] See also some possible implementation methods. Figures 1 to 5As shown, the inner panel reinforcement 150 of this application embodiment includes a main body 151 and an edge portion 152. The edge portion 152 is welded to the inner panel 120 of the D-pillar and forms a plurality of weld points distributed circumferentially along the main body 151. A cavity is formed between the main body 151 and the inner panel 120 of the D-pillar.
[0064] In some embodiments, the inner panel reinforcement 150 is welded to the D-pillar inner panel 120 via the edge portion 152 to ensure the stability of the connection between the inner panel reinforcement 150 and the D-pillar inner panel 120. The cavity formed between the main body portion 151 and the D-pillar inner panel 120 can absorb some energy and reduce stress concentration when the D-pillar inner panel 120 is impacted, thereby preventing the structure of the D-pillar inner panel 120 from being damaged, which is beneficial to improving the collision resistance of the vehicle 10. On the other hand, the cavity can further improve the regulation of the vibration of the D-pillar inner panel 120, thereby further increasing the difference between the natural frequency and the excitation frequency, reducing resonance, reducing noise, and improving the comfort of the vehicle 10.
[0065] The distance between the main body 151 and the inner panel 120 of the D-pillar can be 3mm-7mm. For example, the distance between the main body 151 and the inner panel 120 of the D-pillar can be 3mm, 4mm, 5mm, 6mm or 7mm. Of course, this embodiment does not limit this. The distance between the main body 151 and the inner panel 120 of the D-pillar can be reasonably selected within the above range according to actual needs.
[0066] See also some possible implementation methods. Figures 1 to 4 As shown, the embodiment of this application also includes: a rear wheel hump inner plate 170, which is disposed on one side of the outer side panel 110 opposite to the D-pillar inner plate 120. The top end of the rear wheel hump inner plate 170 is connected to the first region 1211 of the D-pillar inner plate 120, and the bottom end of the rear wheel hump inner plate 170 is connected to the chassis suspension 11 of the vehicle 10, and is spaced apart from the second region 1212 and together form a tire space 171.
[0067] Understandably, the rear wheel hump inner plate 170 and the second region 1212 together define the tire space 171 for mounting the rear wheel 12, providing ample space for the rear wheel 12 to accommodate and move. Simultaneously, it protects the rear wheel 12, preventing interference from surrounding structures or external objects during operation, thus improving the stability of the vehicle 10. Furthermore, the two ends of the rear wheel hump inner plate 170 are connected to the first region 1211 and the chassis suspension 11 respectively, forming a robust support structure that enhances structural strength and ensures the safety of the vehicle 10.
[0068] Furthermore, the tire space 171 forms a space isolated from the receiving cavity. Placing the rear wheel 12 within the tire space 171 helps to block some of the noise generated by the tire rolling on the road from being transmitted to the receiving cavity, thereby reducing the noise in the passenger compartment during vehicle 10 operation and improving the driving experience of vehicle 10.
[0069] See also some possible implementation methods. Figures 1 to 5 As shown, the D-pillar inner panel 120 of this application embodiment includes a first panel 121 and a second panel 122 that are sequentially arranged and spliced from front to back along the front-rear direction of the vehicle 10. The inner panel reinforcement 150 is disposed at the connection between the first panel 121 and the second panel 122 and is connected to the first panel 121 and the second panel 122 respectively. The area of the portion of the inner panel reinforcement 150 opposite to the first panel 121 is smaller than the area of the portion of the inner panel reinforcement 150 opposite to the second panel 122.
[0070] In practical implementation, due to the large overall volume of the D-pillar inner panel 120, for ease of production, the D-pillar inner panel 120 needs to be divided into a first plate 121 and a second plate 122, processed sequentially, and then spliced together to form the D-pillar inner panel 120. This results in the D-pillar inner panel 120 vibrating, as the first plate 121 and the second plate 122 are two independent structures, making it easier for the vibration of the D-pillar inner panel 120 to resonate with the vibration transmitted to the D-pillar inner panel 120 by the rear wheel 12. Therefore, the inner panel reinforcement 150 can be set at the connection between the first plate 121 and the second plate 122, which helps to improve the stability of the connection between the first plate 121 and the second plate 122, improve the mode at the connection between the first plate 121 and the second plate 122, thereby changing the natural frequency at this point, avoiding resonance, reducing noise, and improving the ride comfort of the vehicle 10.
[0071] Since the second plate 122 is closer to the rear wheel 12 of the vehicle 10, the area of the part of the inner plate reinforcement 150 opposite to the second plate 122 can be set to be larger than the area opposite to the first plate 121, so as to ensure that the inner plate reinforcement 150 can cover the overlapping area of the vibration of the rear wheel 12 and the vibration of the D-pillar inner plate 120, thereby improving the noise reduction effect of the inner plate reinforcement 150.
[0072] The shape and size of the inner plate reinforcement 150 are not limited in this application embodiment. For example, the inner plate reinforcement 150 can be rectangular, and its length can be in the range of 130mm-150mm and its width can be in the range of 115mm-135mm.
[0073] See also some possible implementation methods. Figures 1 to 4 , Figure 6 and Figure 8As shown, in this embodiment of the application, the rear pillar 140 extends vertically along the surface of the inner plate 170 of the rear wheel hump. The rear pillar 140 is welded to the inner plate 170 of the rear wheel hump. The top end of the rear pillar 140 is connected to the first plate 121, and the bottom end of the rear pillar 140 is connected to the chassis suspension 11 of the vehicle 10. A cavity is defined on the inner side of the rear pillar 140.
[0074] Understandably, the connection between the rear pillar 140, the inner panel 170 of the rear wheel hump, the first plate 121, and the chassis suspension 11 forms a stable support structure, which helps improve the rigidity of the vehicle body. During vehicle operation, this reduces the impact of vehicle 10 bumps and turns on the passenger compartment, thus improving ride comfort. Simultaneously, the connection between the rear pillar 140 and the chassis suspension 11 helps distribute and mitigate impacts and vibrations on the chassis suspension 11, improving its operational stability and extending its service life.
[0075] In addition, a cavity is formed between the rear pillar 140 and the inner plate of the rear wheel hump 170. When the vehicle 10 is involved in a side collision, the cavity collapses and absorbs some of the energy, thereby reducing the deformation of the passenger compartment. This helps to ensure the survival space in the passenger compartment and improves the overall collision resistance and safety of the vehicle 10.
[0076] Furthermore, such as Figure 7 As shown, the portion of the D-pillar inner panel 120 near the top of the rear pillar 140 can also be configured as a stepped surface to further improve the structural strength and natural frequency of the D-pillar inner panel 120 and reduce noise in the passenger compartment of the vehicle 10. Of course, the D-pillar inner panel 120 can also be configured in other shapes, and this application embodiment does not limit this.
[0077] See also some possible implementation methods. Figures 1 to 4 As shown, in this embodiment of the application, the inner plate reinforcement 150 is spaced apart from the rear column 140, and the distance between the inner plate reinforcement 150 and the rear column 140 is 20mm-40mm. For example, the distance between the inner plate reinforcement 150 and the rear column 140 can be 20mm, 25mm, 30mm, 35mm or 40mm. Of course, this embodiment of the application does not limit this, and the distance between the inner plate reinforcement 150 and the rear column 140 can be reasonably selected within the above range as needed.
[0078] In this way, sufficient assembly space can be reserved for the inner panel reinforcement 150, which is conducive to improving the assembly efficiency of the D-pillar assembly 100. At the same time, it can prevent the inner panel reinforcement 150 from colliding with the rear pillar 140 during the driving of the vehicle 10 and generating noise, thus ensuring the driving experience of the vehicle 10.
[0079] See also some possible implementation methods. Figures 1 to 4As shown, in this embodiment of the application, the thickness of the inner panel reinforcement 150 is 1.7mm-2.5mm; the thickness of the side outer panel 110 is 0.5mm-1mm; the thickness of the D-pillar inner panel 120 is 0.5mm-1mm; the thickness of the water channel body 130 is 0.5mm-1mm; and the thickness of the rear column 140 is 0.5mm-1mm. For example, the thickness of the inner panel reinforcement 150 can be 1.7mm, 1.9mm, 2.1mm, 2.3mm or 2.5mm, and the thickness of the side outer panel 110, the D-pillar inner panel 120, the water channel body 130 or the rear column 140 can all be 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm or 1mm. Of course, this application embodiment does not limit this, and the thickness of the inner panel reinforcement 150, the side outer panel 110, the D-pillar inner panel 120, the water channel body 130 and the rear column 140 can all be reasonably selected within the above range as needed.
[0080] Therefore, the thickness of the inner panel reinforcement 150 is in stark contrast to that of the outer side panel 110, the inner D-pillar panel 120, the water channel 130, and the rear pillar 140. This can effectively increase the natural frequency of vibration at the connection between the rear pillar 140 and the inner D-pillar panel 120, thereby avoiding the excitation frequency from the vibration of the rear wheel 12, preventing resonance, and improving the quietness and comfort of the passenger compartment of the vehicle 10.
[0081] See Figures 1 to 3 As shown, the vehicle 10 provided in this application embodiment includes any of the above-mentioned D-pillar assemblies 100.
[0082] The structure and working principle of the D-pillar assembly 100 have been described in detail in the above embodiments, and will not be repeated here.
[0083] In this embodiment of the application, by assembling the above-mentioned D-pillar assembly 100 on the vehicle 10, the noise generated by the D-pillar assembly 100 when the vehicle 10 is in motion can be reduced while ensuring the structural strength of the D-pillar assembly 100 and the collision resistance of the vehicle 10, thereby improving the NVH performance of the vehicle 10 and improving the ride comfort of the vehicle 10.
[0084] In summary, the D-pillar assembly 100 provided in this application embodiment includes a side outer panel 110, a D-pillar inner panel 120, a drainage channel 130, a rear pillar 140, and an inner panel reinforcement 150. The side outer panel 110, the D-pillar inner panel 120, and the drainage channel 130 together form a buffer cavity 160. The two ends of the rear pillar 140 are respectively connected to the D-pillar inner panel 120 and the chassis suspension 11 of the vehicle 10. The inner panel reinforcement 150 is fixed on the D-pillar inner panel 120 near the rear pillar 140. When the vehicle 10 is moving, the D-pillar assembly 100 itself vibrates. The vibration frequency of the inner panel 120 of the D-pillar forms a natural frequency. The vibration between the rear wheel 12 and the road surface is transmitted to the inner panel 120 of the D-pillar through the rear pillar 140. This frequency forms an excitation frequency. The inner panel reinforcement 150 can increase the natural frequency by increasing the mode of the inner panel 120 of the D-pillar, thereby increasing the difference between the natural frequency and the excitation frequency, alleviating resonance, which helps to reduce the noise generated by resonance, thereby reducing the noise in the passenger compartment during the driving process of the vehicle 10, which helps to improve the NVH performance of the vehicle 10 and thus improve the comfort and experience of the vehicle 10.
[0085] The sequence numbers of the embodiments in this application are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments. The above are merely preferred embodiments of this application and do not limit the patent scope of this application. Any equivalent structural or procedural transformations made based on the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.
Claims
1. A D-pillar assembly for a vehicle, characterized by, The D-pillar assembly comprises: a side outer panel, a D-pillar inner panel, a gutter body, a rear pillar and an inner panel reinforcement; a top end of the side outer panel and a top end of the D-pillar inner panel are connected to two sides of the gutter body respectively, and the D-pillar inner panel is further connected to the side outer panel, so that a buffer cavity is jointly formed between the side outer panel, the D-pillar inner panel and the gutter body; the inner panel reinforcement is fixedly connected to the D-pillar inner panel; one end of the rear pillar is connected to the D-pillar inner panel, and the other end is connected to a chassis suspension of a vehicle.
2. The D-pillar assembly of claim 1, wherein, The inner panel reinforcement is arranged on a side surface of the D-pillar inner panel facing away from the buffer cavity.
3. The D-pillar assembly of claim 2, wherein, The side outer panel comprises a rear wheel bulge outer panel area extending to a tire space of the vehicle, the D-pillar inner panel comprises a first area and a second area arranged in sequence from top to bottom, the first area is located on an upper side of the rear wheel bulge outer panel area and is spaced apart from the side outer panel, and the second area is opposite to the rear wheel bulge outer panel area and is connected to the second area, The inner panel reinforcement is arranged on the first area.
4. The D-pillar assembly of claim 3, wherein, The inner panel reinforcement comprises a main body part and an edge part, the edge part is welded to the D-pillar inner panel and forms a plurality of welding points distributed along a circumferential direction of the main body part, and a cavity is formed between the main body part and the D-pillar inner panel.
5. The D-pillar assembly of claim 3, wherein, Further comprising: a rear wheel bulge inner panel arranged on a side of the D-pillar inner panel facing away from the side outer panel, a top end of the rear wheel bulge inner panel is connected to the first area of the D-pillar inner panel, a bottom end of the rear wheel bulge inner panel is connected to the chassis suspension of the vehicle and is spaced apart from the second area to jointly form the tire space.
6. The D-pillar assembly of claim 5, wherein, The D-pillar inner panel comprises a first panel body and a second panel body arranged in sequence from front to back along a front-rear direction of the vehicle and spliced, the inner panel reinforcement is arranged at a connection position of the first panel body and the second panel body and is connected to the first panel body and the second panel body respectively, an area of a portion of the inner panel reinforcement opposite to the first panel body is smaller than an area of a portion of the inner panel reinforcement opposite to the second panel body.
7. The D-pillar assembly of claim 6, wherein, The rear pillar extends vertically along a surface of the rear wheel bulge inner panel, the rear pillar is welded to the rear wheel bulge inner panel, a top end of the rear pillar is connected to the first panel body, a bottom end of the rear pillar is connected to the chassis suspension of the vehicle, and an inner side of the rear pillar defines a cavity.
8. The D-pillar assembly of claim 7, wherein, The inner panel reinforcement is spaced apart from the rear pillar, and a spacing between the inner panel reinforcement and the rear pillar is 20mm-40mm.
9. The D-pillar assembly according to claim 4, wherein a thickness of the inner panel reinforcement is 1.7mm-2.5mm; and / or, a thickness of the side outer panel is 0.5mm-1mm; and / or, a thickness of the D-pillar inner panel is 0.5mm-1mm; and / or, a thickness of the gutter body is 0.5mm-1mm; and / or, a thickness of the rear pillar is 0.5mm-1mm.
10. A vehicle characterized by comprising: The D-pillar assembly comprises any one of claims 1-9.