A window sunshade system and vehicle for improving wind noise performance in automobiles

Abstract

This invention belongs to the field of automotive technology and discloses a car window sunshade system and vehicle for improving wind noise performance. The system includes a sunshade and a car window glass. A sound-absorbing structure that expands and contracts along the normal direction of the glass surface is provided between the sunshade and the car window glass. The projection shape of the sound-absorbing structure in a plane parallel to the glass surface corresponds to the projection shape of the car window glass in a plane parallel to the glass surface. This invention detects the vehicle's speed and the opening / closing state of the car window glass to drive the sunshade to fully open and deploy the sound-absorbing structure, thereby forming a sound insulation structure between the car window glass and the sunshade.

Description

Technical Field

[0001] This invention relates to the field of automotive technology, and more specifically to a window sunshade system and vehicle for improving wind noise performance in automobiles. Background Technology

[0002] With the rapid development of new energy vehicles, wind noise during high-speed driving has become an increasingly prominent issue. Because new energy vehicles lack the masking effect of traditional powertrain noise, wind noise is more pronounced at high speeds, often ranking among the top user complaints. From the perspective of noise generation and transmission mechanisms, the excitation source of automotive wind noise is the aerodynamic noise generated by the interaction between high-speed airflow and the vehicle's exterior design. Its transmission mainly occurs through two pathways: body sealing and body sound insulation. It is worth noting that once the vehicle's exterior design is determined, its wind noise excitation source is fixed and largely unchangeable.

[0003] Currently, the industry employs various technical solutions to improve the sealing and sound insulation of vehicle bodies. Adding door sealing strips is a common solution, effectively addressing the issues of cavities and leaking wind noise at door seams, but it cannot resolve wind noise transmission through the window glass area. Another solution is increasing glass thickness. While this can improve window sound insulation to some extent, its effect is very limited and it significantly increases the weight of glass components, negatively impacting overall vehicle weight and energy consumption.

[0004] While maintaining the same glass thickness, implementing sound-insulating laminated glass is another technical option. However, this solution can only improve the sound insulation level of the window glass and reduce wind noise within the glass's matching frequency range, with limited improvement effects on other frequency ranges. More importantly, its significant cost increase poses a considerable challenge to overall vehicle cost control.

[0005] Therefore, there is an urgent need to develop a car window sunshade structure to solve the above-mentioned technical problems. Summary of the Invention

[0006] To address or partially address the problems existing in related technologies, the present invention aims to provide a vehicle window sunshade system and vehicle that improves the wind noise performance of automobiles. By detecting the vehicle's driving speed and the opening and closing state of the window glass, the system drives the sunshade to fully open and deploy the sound-absorbing structure, thereby forming a new sound insulation structure between the window glass and the sunshade.

[0007] To achieve the above objectives, in a first aspect, the present invention provides a car window sunshade system for improving the wind noise performance of a vehicle, comprising a sunshade and a car window glass, wherein a sound-absorbing structure that extends and contracts along the normal direction of the glass surface is provided between the sunshade and the car window glass, and the projection shape of the sound-absorbing structure in a plane parallel to the glass surface corresponds to the projection shape of the car window glass in a plane parallel to the glass surface.

[0008] In a preferred embodiment of the present invention, an actuator is included for driving the sound-absorbing structure to extend and retract along the glass surface normal, the actuator including a linear module extending along the glass surface normal.

[0009] In a preferred embodiment of the present invention, iron powder is provided at the four corners of the car window glass, and magnetic sheets are provided on the sound-absorbing structure corresponding to the positions of the iron powder.

[0010] In a preferred embodiment of the present invention, when the sound-absorbing structure extends to its limit position along the normal direction of the glass surface, and when the sound-absorbing structure completely fills the space between the sunshade and the car window glass, the sound-absorbing structure completely covers the sunshade.

[0011] In a preferred embodiment of the present invention, the thickness of the sound-absorbing structure in its retracted state is less than 5 mm.

[0012] In a preferred embodiment of the present invention, the sound insulation performance of the sound insulation structure formed by the window glass and the sound-absorbing structure is better than that of the window glass.

[0013] In a preferred embodiment of the present invention, a control unit and a speed sensor are included, wherein the control unit is connected to the speed sensor and the actuator, respectively.

[0014] In a preferred embodiment of the present invention, the activation condition of the window sunshade is: when the window glass is completely closed and the vehicle speed is greater than S km / h, where S is a calibration value and S is preferred to be 60.

[0015] In a preferred embodiment of the present invention, during vehicle operation, when the control unit detects the activation condition of the window sunshade, the control unit first prompts the user with a voice to open the sound-absorbing structure, and then the control unit controls the actuator to open the sound-absorbing structure and cover the entire window glass area; when the control unit receives the window sunshade closing command, the actuator first retracts the sound-absorbing structure onto the sunshade, then the system controls the motor to retract the sunshade, and finally executes the window glass opening command or the vehicle locking command.

[0016] The present invention also discloses a car, including a window sunshade system for improving the wind noise performance of the car.

[0017] The beneficial effects of this invention are as follows: This invention provides an innovative wind noise control solution. By setting a retractable sound-absorbing structure between the sunshade and the window glass, it can effectively improve the wind noise performance of a vehicle at high speeds without changing the existing vehicle body structure and glass configuration. Specifically, this invention designs a sunshade structure and control system with a sound-absorbing structure. By detecting the vehicle's speed and the opening / closing state of the window glass, it drives the sunshade to fully open and deploy the sound-absorbing structure, thereby forming a sound insulation structure between the window glass and the sunshade. This sound insulation structure can effectively improve the in-vehicle wind noise level when the car is traveling at high speeds, significantly improving the user's driving comfort.

[0018] Furthermore, this invention offers several advantages in its technical implementation. First, the sound insulation performance of the sound-absorbing structure formed by the window glass and the sound-absorbing structure is superior to that of the window glass itself, effectively reducing wind noise levels inside the vehicle. Second, the thickness of the sound-absorbing structure when retracted is less than 5mm, and its weight is significantly lower than traditional solutions that increase glass thickness, minimizing its impact on overall vehicle weight and energy consumption. Third, the combination of magnetic sheets and iron powder ensures a reliable fit between the sound-absorbing structure and the window glass. More importantly, the sound-absorbing material of this structure is nearly transparent, ensuring that the original sunlight-blocking effect of the sunshade and the user's field of vision are not altered when the sound-absorbing structure is fully extended.

[0019] Furthermore, in terms of intelligent control, this invention features a complete control logic. The system, through a speed sensor and control unit, can automatically start based on vehicle speed and includes voice prompts to enhance the user experience. Simultaneously, the system has complete on / off control logic to ensure safe and reliable operation.

[0020] Compared to existing technologies, this invention offers significant economic and practical advantages. Compared to traditional soundproof laminated glass solutions, this invention avoids a substantial increase in glass costs, achieving this through improvements to existing sunshade systems, thus offering better cost-effectiveness. The structural design employs a linear module drive, resulting in a simple, reliable structure that is easy to install and maintain, and is compatible with existing vehicle window glass systems without requiring significant modifications to the vehicle body structure. Through this innovative design, this invention effectively solves the problem of balancing improvement effectiveness with cost and weight in existing wind noise reduction solutions. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments disclosed in this invention, the accompanying drawings of the embodiments will be briefly described below. These drawings are for illustrative purposes only and are not intended to limit the scope of protection of this invention.

[0022] Figure 1 This is a schematic diagram of the car window sunshade system for improving the wind noise performance of a car according to the present invention;

[0023] Figure 2 This is a cross-sectional schematic diagram of the window sunshade system for improving the wind noise performance of automobiles according to the present invention.

[0024] Figure 3 This is a schematic diagram of the retracted state of the car window sunshade system for improving the wind noise performance of a car according to the present invention.

[0025] Figure 4 This is a schematic diagram of the deployed state of the car window sunshade system for improving the wind noise performance of a car according to the present invention.

[0026] Figure 5 This is a schematic diagram illustrating the technical effect of the window sunshade system for improving vehicle wind noise performance according to the present invention; (Wind noise inside a certain vehicle model at a constant speed of 120km / h)

[0027] Figure 6 This is a schematic diagram illustrating the technical effect of existing sound-insulating laminated glass solutions; (Wind noise inside a certain car model at a constant speed of 120km / h)

[0028] Figure 7 This is a flowchart of the process of the vehicle window sunshade system for improving vehicle wind noise performance according to the present invention.

[0029] Figure 8 This is a design flowchart of the car window sunshade system for improving the wind noise performance of automobiles according to the present invention. Detailed Implementation

[0030] The technical solutions (including preferred technical solutions) of the present invention will be further described in detail below with reference to the accompanying drawings and by way of listing some optional embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0031] Example 1

[0032] like Figure 1-4 As shown, this invention provides a car window sunshade system to improve vehicle wind noise performance. The system mainly consists of the following components: a sunshade 1 and a car window glass 2, and a sound-absorbing structure 3 that can extend and retract along the normal direction of the glass surface, positioned between them. The projection shape of the sound-absorbing structure 3 in a plane parallel to the glass surface corresponds to the projection shape of the car window glass 2. This design ensures that the sound-absorbing structure can completely cover the entire glass area, thereby maximizing the noise reduction effect.

[0033] To achieve reliable motion control of the sound-absorbing structure 3, this system is equipped with a dedicated actuator. The core component of this actuator is a linear module extending along the normal direction of the glass surface. This design ensures smooth and controllable movement of the sound-absorbing structure 3. Simultaneously, to guarantee a reliable fit between the sound-absorbing structure 3 and the vehicle window glass 2, iron powder is placed at the four corners of the window glass 2, and magnetic sheets corresponding to the positions of the iron powder are placed on the sound-absorbing structure 3. This magnetic fit design not only ensures a tight fit between the sound-absorbing structure and the glass after deployment but also provides sufficient fixing force to prevent loosening during vehicle operation.

[0034] This invention places particular emphasis on lightweight design and efficient space utilization in its structural design. Specifically, the thickness of the sound-absorbing structure 3 is controlled to less than 5mm when retracted. This ultra-thin design ensures that the normal opening and closing of the sunshade 1 is not affected when retracted, and that it can completely fill the space between the sunshade 1 and the window glass 2 when extended. More importantly, the sound insulation performance of the sound insulation structure formed by the window glass 2 and the sound-absorbing structure 3 is superior to that of the window glass itself, a characteristic that is key to achieving effective noise reduction.

[0035] Example 2

[0036] like Figure 7 As shown, this invention is equipped with a complete intelligent control system, mainly including a control unit and a speed sensor. The control unit achieves automated system control through connections to the speed sensor and actuators. The system's activation conditions are set as follows: the vehicle window 2 is completely closed and the vehicle speed exceeds the calibrated value S km / h. This design ensures that the system automatically activates during high-speed driving, where noise reduction is most needed.

[0037] The specific control process is as follows:

[0038] 1. Start-up process: When the start-up conditions are met while the vehicle is in motion, the control system will perform the following operations in sequence: First, the user will be prompted by the voice system that the sound-absorbing structure 3 is about to be activated; then the system controls the motor to open the sunshade 1; the control unit then instructs the actuator to unfold the sound-absorbing structure 3; ensuring that the sound-absorbing structure 3 completely covers the entire window glass area.

[0039] 2. Closing Procedure: When the system receives a closing command, it will perform the following operations in sequence: The actuator first retracts the sound-absorbing structure 3 onto the sunshade 1; the system controls the motor to retract the sunshade 1; and executes the window glass opening command or the vehicle locking command according to the specific situation.

[0040] Example 3

[0041] like Figure 8 As shown, taking the rear window of a certain SUV model as an example, the specific implementation steps of the present invention are as follows:

[0042] 1. Structural design stage:

[0043] Based on the specific dimensions of the SUV's rear window, the shape and unfolded dimensions of the sound-absorbing structure were designed to ensure complete coverage of the window area. Special attention was paid to precisely designing the Y-axis dimensions of the sound-absorbing structure in its unfolded state, taking into account the Y-axis distance between the rear window glass and the sunshade.

[0044] 2. Material selection stage:

[0045] To address the characteristics of mid-to-high frequency wind noise above 1000Hz, materials with high sound absorption levels are selected. The following parameters are key considerations when selecting materials: material type and surface density, which primarily affect the sound absorption level; and transparency, to ensure that it does not obstruct the view of vehicle occupants.

[0046] 3. Fixed scheme optimization:

[0047] Iron powder was accurately placed at the four corners of the rear window glass, and magnetic sheets were placed at the corresponding positions of the sound-absorbing structure. The optimal magnetic force was determined through repeated testing to ensure a reliable fit without affecting the storage operation.

[0048] 4. Control logic optimization:

[0049] Through real-vehicle testing, the optimal starting speed threshold S was determined, and the timing and method of voice prompts were optimized based on user habits. Simultaneously, the timing sequence of various system operations was optimized to ensure a smooth and natural start-up and shutdown process.

[0050] Through the above implementation scheme, this invention not only effectively improves the wind noise performance of vehicles at high speeds, but also ensures the reliability and ease of use of the system. Real-vehicle testing shows that the system can significantly improve the in-vehicle noise environment and enhance driving comfort, while its intelligent control scheme also greatly improves the user experience.

[0051] It will be readily understood by those skilled in the art that the above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, combinations, substitutions, improvements, etc., made under the spirit and principles of the present invention are included within the protection scope of the present invention.

Claims

1. A car window sunshade system for improving vehicle wind noise performance, characterized in that: It includes a sunshade (1) and a car window glass (2). A sound-absorbing structure (3) that extends and contracts along the normal direction of the glass surface is provided between the sunshade (1) and the car window glass (2). The projection shape of the sound-absorbing structure (3) in a plane parallel to the glass surface corresponds to the projection shape of the car window glass (2) in a plane parallel to the glass surface.

2. The vehicle window sunshade system for improving vehicle wind noise performance according to claim 1, characterized in that: Includes an actuator for driving the sound-absorbing structure (3) to extend and retract along the glass surface, the actuator including a linear module arranged to extend along the glass surface.

3. The vehicle window sunshade system for improving vehicle wind noise performance according to claim 1, characterized in that: Iron powder is provided at the four corners of the car window glass (2), and magnetic sheets are arranged on the sound-absorbing structure (3) corresponding to the positions of the iron powder.

4. The vehicle window sunshade system for improving vehicle wind noise performance according to claim 1, characterized in that: When the sound-absorbing structure (3) extends to its limit along the normal direction of the glass surface, the sound-absorbing structure (3) completely fills the space between the sunshade (1) and the car window glass (2), and the sound-absorbing structure (3) completely covers the sunshade (1).

5. The vehicle window sunshade system for improving vehicle wind noise performance according to claim 1, characterized in that: When the sound-absorbing structure (3) is shortened to its limit position along the normal direction of the glass surface, the thickness of the sound-absorbing structure (3) is less than 5 mm.

6. The vehicle window sunshade system for improving vehicle wind noise performance according to claim 1, characterized in that: The sound insulation performance of the sound insulation structure composed of the car window glass (2) and the sound absorption structure (3) is better than that of the car window glass (2).

7. The vehicle window sunshade system for improving vehicle wind noise performance according to claim 2, characterized in that: It includes a control unit, which is connected to the actuator. The control unit uses the vehicle's own speed information to activate or deactivate the actuator.

8. The vehicle window sunshade system for improving vehicle wind noise performance according to claim 7, characterized in that: The activation conditions for the car window sunshade are: when the car window glass (2) is completely closed and the vehicle speed is greater than S km / h, where S is the calibration value.

9. The vehicle window sunshade system for improving vehicle wind noise performance according to claim 8, characterized in that: During vehicle operation, when the control unit detects the activation condition of the window sunshade, the control unit first prompts the user with a voice to open the sound-absorbing structure (3), and then the control unit controls the actuator to open the sound-absorbing structure (3) and cover the entire window glass area; when the control unit receives the window sunshade closing command, the actuator first retracts the sound-absorbing structure (3) onto the sunshade (1), then the system controls the motor to retract the sunshade (1), and finally executes the window glass opening command or the vehicle locking command.

10. A vehicle, characterized in that: Including the window sunshade system for improving vehicle wind noise performance as described in any one of claims 1-9.

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