Car window sunshade curtain system for improving wind noise performance of car and car

Abstract

The invention belongs to the technical field of automobiles, and discloses an automobile window sunshade curtain system and an automobile capable of improving the automobile wind noise performance, the automobile window sunshade curtain system comprises a sunshade curtain and automobile window glass, and a sound absorption structure stretching out and drawing back in the normal direction of a glass surface is arranged between the sunshade curtain and the automobile window glass; the projection shape of the sound absorption structure in the plane parallel to the glass face corresponds to the projection shape of the vehicle window glass in the plane parallel to the glass face. By detecting the running speed of the vehicle and the opening and closing state of the vehicle window glass, the sunshade curtain is driven to be completely opened, and the sound absorption structure is unfolded, so that a sound insulation structure is formed between the vehicle window glass and the sunshade curtain.

Description

Technical Field

[0001] The invention relates to the technical field of automobiles, and in particular to a vehicle window sunshade system and a vehicle for improving wind noise performance of a vehicle. Background Art

[0002] With the rapid development of new energy vehicles, the problem of wind noise when the car is driving at high speed has become increasingly prominent. Since new energy vehicles lack the masking effect of traditional powertrain noise, wind noise is more prominent when driving at high speed, so it is often at the forefront of user complaints. From the perspective of noise generation and transmission mechanism, the excitation source of automobile wind noise is the aerodynamic noise generated by the interaction between high-speed flowing air and the exterior shape of the car, and its transmission is mainly through two channels: body sealing and body sound insulation. It is worth noting that when the exterior shape of the car is determined, its styling wind noise excitation source is determined and basically cannot be changed.

[0003] At present, the industry uses a variety of technical solutions to improve the sealing and sound insulation level of the car body. Adding door sealing strips is a common solution, which can effectively solve the cavity and leakage wind noise problems at the door seams, but cannot solve the wind noise transmission in the window glass area. Another solution is to increase the thickness of the glass. Although this method can improve the sound insulation level of the window glass to a certain extent, its improvement effect is very limited, and it will cause a significant increase in the weight of the glass parts, which will have a significant negative impact on the weight and energy consumption of the whole vehicle.

[0004] Under the condition of keeping the glass thickness unchanged, implementing soundproof laminated glass is another technical option. However, this solution can only improve the sound insulation level of the window glass and reduce wind noise in the matching frequency band of the glass, and the improvement effect on other frequency bands is relatively limited. More importantly, due to its large cost increase, it brings great challenges to the cost control of the whole vehicle.

[0005] Therefore, it is urgent to develop a vehicle window sunshade structure to solve the above technical problems. Summary of the invention

[0006] In order to solve or partially solve the problems existing in the related art, the purpose of the present invention is to provide a window sunshade system and a vehicle for improving the wind noise performance of a car. It detects the driving speed of the vehicle and the open and closed state of the window glass, drives the sunshade to open completely and unfold the sound-absorbing structure, thereby forming a new sound insulation structure between the window glass and the sunshade.

[0007] To achieve the above-mentioned objectives, in a first aspect, the present invention provides a vehicle window sunshade system for improving the wind noise performance of a vehicle, comprising a sunshade and a vehicle window glass, wherein a sound-absorbing structure which extends and retracts along the normal direction of the glass surface is arranged between the sunshade and the vehicle window glass, and a projection shape of the sound-absorbing structure in a plane parallel to the glass surface corresponds to a projection shape of the vehicle 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 normal direction of the glass surface, and the actuator includes a linear module arranged to extend along the normal direction of the glass surface.

[0009] In a preferred embodiment of the present invention, iron powders are arranged on the four corners of the vehicle window glass, and magnetic sheets arranged corresponding to the positions of the iron powders are arranged on the sound absorbing structure.

[0010] In a preferred embodiment of the present invention, when the sound absorbing structure is extended to the limit position along the normal direction of the glass surface and the sound absorbing structure completely fills the space between the sunshade and the vehicle 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 the folded 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 vehicle window glass and the sound absorbing structure is better than that of the vehicle window glass.

[0013] In a preferred embodiment of the present invention, a control unit and a speed sensor are included, and 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 vehicle window sunshade is: when the vehicle window glass is in a fully closed state and the vehicle speed is greater than S km / h, S is a calibrated value, and S is prioritized to be 60.

[0015] In a preferred embodiment of the present invention, during vehicle driving, when the control unit detects the starting conditions of the window sunshade, the control unit first voice prompts the user 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 a window sunshade closing instruction, the actuator first retracts the sound absorbing structure onto the sunshade, and then the system controls the motor to retract the sunshade, and finally executes the window glass opening instruction or the vehicle locking instruction.

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

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

[0018] Furthermore, the present invention has multiple advantages in technical implementation. First, 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, which can effectively reduce the wind noise level in the car. Secondly, the thickness of the sound-absorbing structure in the folded state is less than 5mm, and the weight is much lower than the traditional solution of increasing the thickness of the glass, which has little impact on the weight and energy consumption of the whole vehicle. Thirdly, the matching design of magnetic sheets and iron powder is adopted to ensure the reliable fit between the sound-absorbing structure and the window glass. More importantly, the sound-absorbing material of the sound-absorbing structure has the characteristic of being nearly transparent. After the sound-absorbing structure is fully unfolded, the original sunlight shielding effect of the sunshade and the user's field of vision requirements are not changed.

[0019] Furthermore, in terms of intelligent control, the present invention has designed a complete control logic. The system can automatically start according to the vehicle speed through the speed sensor and control unit, and is equipped with a voice prompt function to enhance the user experience. At the same time, the system has a complete opening and closing control logic to ensure safe and reliable operation.

[0020] Compared with the existing technical solutions, the present invention has significant economic and practical advantages. Compared with the traditional soundproof laminated glass solution, the present invention avoids a significant increase in glass costs, is achieved through the improvement of the existing sunshade system, and has good cost-effectiveness. The linear module drive is adopted in the structural design, the structure is simple and reliable, easy to install and maintain, and can be adapted to the existing window glass system without major changes to the body structure. Through this innovative design, the present invention effectively solves the problem of the existing wind noise improvement solution that is difficult to balance between improvement effect and cost and weight. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments disclosed in the present invention, the drawings of the embodiments are briefly introduced below. These drawings are only used for illustrative purposes and are not intended to limit the protection scope of the present invention.

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

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

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

[0025] Figure 4 It is a schematic diagram of the unfolded state of the vehicle window sunshade system for improving the wind noise performance of the vehicle according to the present invention;

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

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

[0028] Figure 7 It is a working flow chart of the vehicle window sunshade system for improving the wind noise performance of the vehicle according to the present invention;

[0029] Figure 8 The present invention is a design flow chart of a vehicle window sunshade system for improving the wind noise performance of a vehicle. DETAILED DESCRIPTION

[0030] The technical solution of the present invention (including the preferred technical solution) is further described in detail below by means of the accompanying drawings and by listing some optional embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] Example 1

[0032] like Figure 1-4 As shown, the present invention provides a vehicle window sunshade system for improving the wind noise performance of a vehicle. The vehicle window sunshade system for improving the wind noise performance of a vehicle provided by the present invention mainly consists of the following parts: a sunshade 1 and a vehicle window glass 2, and a sound absorbing structure 3 arranged between the two and capable of being retracted along the normal direction of the glass surface. Among 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 vehicle 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] In order to achieve reliable motion control of the sound-absorbing structure 3, the system is equipped with a special actuator. The core component of the actuator is a linear module arranged along the normal extension of the glass surface. This design can ensure that the movement of the sound-absorbing structure 3 is stable and controllable. At the same time, in order to ensure reliable adhesion between the sound-absorbing structure 3 and the window glass 2, iron powder is arranged on the four corners of the window glass 2, and magnetic sheets corresponding to the positions of the iron powder are arranged on the sound-absorbing structure 3. This magnetic matching design not only ensures that the sound-absorbing structure fits tightly with the glass after it is unfolded, but also provides sufficient fixing force to prevent it from loosening during vehicle driving.

[0034] The present invention pays special attention to lightweight and space utilization efficiency in structural design. Specifically, the thickness of the sound-absorbing structure 3 in the folded state is controlled to be less than 5 mm. This ultra-thin design not only ensures that the sunshade 1 is not affected in the folded state, but also can completely fill the space between the sunshade 1 and the window glass 2 in the unfolded state. More importantly, the sound insulation performance of the sound insulation structure formed by the window glass 2 and the sound-absorbing structure 3 is better than that of the window glass, which is the key to achieving effective noise reduction.

[0035] Example 2

[0036] like Figure 7 As shown, the present invention is equipped with a complete intelligent control system, which mainly includes a control unit and a speed sensor. The control unit realizes automatic control of the system by connecting with the speed sensor and the actuator respectively. The starting condition of the system is set as: the window glass 2 is in a fully closed state and the vehicle speed is greater than the calibration value S km / h. This design ensures that the system automatically starts in the high-speed driving state 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 during vehicle driving, the control system will perform operations in the following order: first, the user is prompted through the voice system that the sound-absorbing structure 3 is about to be opened; 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; and ensure that the sound-absorbing structure 3 completely covers the entire window glass area.

[0039] 2. Closing process: When the system receives a closing command, it will perform operations in the following order: 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] According to the specific size of the SUV's rear window, the shape and unfolding size of the sound-absorbing structure are designed to ensure that it can completely cover the window area. Special attention should be paid to accurately designing the Y-dimensional size of the sound-absorbing structure when it is unfolded according to the Y-dimensional spacing between the rear window glass and the sunshade.

[0044] 2. Material selection stage:

[0045] In view of the characteristics of mid- and high-frequency wind noise above 1000Hz, materials with higher sound absorption levels are selected. When selecting materials, the following parameters are considered: material type and surface density, which mainly affect the sound absorption level; transparency, to ensure that the vision of the passengers in the car is not affected.

[0046] 3. Fixed solution optimization:

[0047] Iron powder is accurately arranged at the four corners of the rear window glass, and magnetic sheets are set at the corresponding positions of the sound-absorbing structure. The optimal magnetic force is determined through repeated tests to ensure reliable fit without affecting the storage operation.

[0048] 4. Control logic optimization:

[0049] Through actual vehicle testing, the optimal startup speed threshold S is determined, and the timing and method of voice prompts are optimized according to user habits. At the same time, the timing of various system operations is optimized to ensure that the entire opening and closing process is smooth and natural.

[0050] Through the above implementation scheme, the present invention can not only effectively improve the wind noise performance of the vehicle when driving at high speed, but also ensure the reliability of system operation and convenience of use. Actual vehicle tests show that the system can significantly improve the noise environment in the car and enhance driving comfort. At the same time, its intelligent control scheme also greatly improves the user experience.

[0051] Those skilled in the art will readily appreciate that the above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, combinations, replacements, improvements, etc. made within the spirit and principles of the present invention are included within the protection scope of the present invention.

Claims

1. A vehicle window sunshade system for improving the wind noise performance of a vehicle, characterized by: The invention comprises a sunshade (1) and a vehicle window glass (2), wherein a sound absorbing structure (3) is arranged between the sunshade (1) and the vehicle window glass (2) and is retracted in the normal direction of the glass surface, and the projection shape of the sound absorbing structure (3) in a plane parallel to the glass surface corresponds to the projection shape of the vehicle window glass (2) in a plane parallel to the glass surface.

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

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

4. The vehicle window sunshade system for improving the wind noise performance of a vehicle according to claim 1, characterized in that: When the sound absorbing structure (3) is extended to an extreme position along the normal direction of the glass surface, the sound absorbing structure (3) completely fills the space between the sunshade (1) and the vehicle window glass (2), and the sound absorbing structure (3) completely covers the sunshade (1).

5. The vehicle window sunshade system for improving the wind noise performance of a vehicle according to claim 1, characterized in that: When the sound absorbing structure (3) is shortened to an extreme 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 the wind noise performance of a vehicle according to claim 1, characterized in that: The sound insulation performance of the sound insulation structure formed by the vehicle window glass (2) and the sound absorbing structure (3) is better than that of the vehicle window glass (2).

7. The vehicle window sunshade system for improving the wind noise performance of a vehicle according to claim 2, characterized in that: It includes a control unit, which is connected to the actuator, and the control unit calls the speed information of the vehicle itself to open and close the actuator.

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

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

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

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