A device for reducing the wind-induced vibration noise of the rear side windows of a vehicle

Abstract

The present invention discloses a device for reducing the wind vibration noise of the rear side window of an automobile, which comprises: a cover plate, arranged on the outer side surface of the vehicle body column of the automobile, one side of the cover plate is linked with the vehicle body column, and the other side of the cover plate can rotate relative to the vehicle body column; a driving mechanism, connected with the lifting glass of the rear side window of the automobile, the lifting glass is connected with the vehicle body column through a lifting slide rail, a reset mechanism, connected with the cover plate and the vehicle body column, when the lifting glass rises, the reset mechanism can drive the other side of the cover plate to rotate inwards, so that the outer surface of the cover plate is flush with the outer surface of the vehicle body column. The present invention can guide the direction of the air flow, so that the air flow does not directly act on the rear side window of the automobile, reduces the wind noise and the in-vehicle wind vibration noise, improves the comfort of the automobile, reduces the air resistance when opening the rear side window of the automobile, and does not require an additional control system, with low cost and simple structure.

Description

Technical Field

[0001] The present invention relates to the technical field of automotive wind-induced vibration noise control, and particularly to a device for reducing the wind-induced vibration noise of the rear side window of an automobile. Background Art

[0002] Wind-induced vibration noise is a kind of cavity resonance noise. When the side window or sunroof of an automobile is opened, a cavity is formed inside the vehicle compartment. Referring to Figure 1 As shown, there is an unstable shear layer at the upstream edge (front edge) of the cavity opening, which causes vortices to shed at this position and flow backward with the air flow. The vortices hit the rear edge of the opening and break, generating pressure waves that propagate in all directions. When the pressure waves reach the front edge of the opening, they will trigger the shedding of vortices again. The above process repeats multiple times per second and causes the shear layer to generate a specific vibration frequency. When this vibration frequency is consistent with the natural frequency of the opening vehicle compartment, resonance will occur, that is, Helmholtz resonance, and the wind-induced vibration noise is the most significant at this time. Wind-induced vibration noise has the characteristics of low frequency (about 20 Hz) and high intensity (above 100 dB). In such a riding environment, it is very easy for the driver and passengers to feel irritable and tired, which has a great impact on the riding comfort of the automobile. It will not only affect the health of the passengers, but also induce traffic accidents.

[0003] With the continuous improvement of consumers' requirements for automobile comfort, the control of the wind-induced vibration noise of the rear side window is imperative. The problems of wind-induced vibration noise of the sunroof and the front side window have been effectively controlled in engineering. The wind-induced vibration problem of the rear side window is more serious than that of the front window, but there is no effective solution at present. The main reason is that the existing wind-induced vibration control measures for the rear side window will affect the appearance of the automobile and increase the aerodynamic drag of the whole vehicle, so there are many limitations in engineering applications. Summary of the Invention

[0004] Based on this, it is necessary to provide a device for reducing the wind-induced vibration noise of the rear side window of an automobile with simple structure, convenient use and good effect in view of the above technical problems.

[0005] A device for reducing the wind-induced vibration noise of the rear side window of an automobile, comprising:

[0006] A cover plate, which is arranged on the outer side surface of the vehicle body pillar of the automobile. One side of the cover plate is connected to the vehicle body pillar, and the other side of the cover plate can rotate relative to the vehicle body pillar;

[0007] A driving mechanism, which is connected to the lifting glass of the rear side window of the automobile. The lifting glass is connected to the vehicle body pillar through a lifting slide rail. When the lifting glass descends, the driving mechanism can drive the other side of the cover plate to rotate outwards, so that an included angle is formed between the outer surface of the cover plate and the outer surface of the vehicle body pillar;

[0008] A reset mechanism, connected to the cover plate and the vehicle body pillar. When the lifting glass ascends, the reset mechanism can drive the other side of the cover plate to rotate inward, making the outer surface of the cover plate flush with the outer surface of the vehicle body pillar.

[0009] In one embodiment, the driving mechanism includes a guide rail and a slider. The guide rail is arranged inside the vehicle body pillar, and the guide rail is parallel to the lifting slide rail; one side of the slider is fixed on the lifting glass, and the other side of the slider is slidably connected to the guide rail; wherein, the top surface of the slider also contacts the bottom surface of the other side of the cover plate;

[0010] When the lifting glass ascends or descends, the slider moves upward or downward along the guide rail, and the slider can drive the other side of the cover plate to rotate inward or outward around the vehicle body pillar.

[0011] In one embodiment, the cover plate is in the shape of a triangular frustum with a smaller top and a larger bottom, and the cross-section of the cover plate is an isosceles triangle; the slider is in the shape of a trapezoidal frustum, and the inclined surface of the trapezoidal frustum is in sliding contact with the bottom surface of the triangular frustum.

[0012] In one embodiment, the cover plate and the vehicle body pillar are linked by a hinge.

[0013] In one embodiment, the reset mechanism includes a volute spring. The volute spring is sleeved on the hinge, and the volute spring is respectively connected to the cover plate and the vehicle body pillar.

[0014] In one embodiment, the vehicle body pillar is the vehicle body B-pillar.

[0015] For the above device for reducing the wind vibration noise of the rear side window of a vehicle, when the lifting glass of the rear side window of the vehicle ascends, the reset mechanism can drive the other side of the cover plate to rotate inward, making the outer surface of the cover plate flush with the outer surface of the vehicle body pillar, thus ensuring the necessary functions of the vehicle body and not affecting the appearance of the vehicle; while when the lifting glass of the rear side window of the vehicle descends, the driving mechanism can drive the other side of the cover plate to rotate outward, forming an angle between the outer surface of the cover plate and the outer surface of the vehicle body pillar, so as to guide the direction of the air flow, making the air flow not directly act on the rear side window of the vehicle, reducing the wind noise and the in-vehicle wind vibration sound, improving the comfort of the vehicle, reducing the air resistance when opening the rear side window of the vehicle, and without the need for an additional control system, with low cost and simple structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the air flow at the rear side window of a vehicle in the prior art;

[0017] Figure 2It is the usage state diagram of the device for reducing the wind vibration noise of the rear side window of an automobile in the present invention;

[0018] Figure 3 It is the schematic structural diagram of the device for reducing the wind vibration noise of the rear side window of an automobile in the present invention;

[0019] Figure 4 It is the airflow streamline diagram of the rear side window of an automobile in the prior art;

[0020] Figure 5 It is the airflow streamline diagram of the rear side window of an automobile in the present invention;

[0021] Figure 6 It is the noise comparison diagram inside the automobile between the prior art and the present invention. Detailed implementation manners

[0022] For the convenience of understanding the present invention, the present invention will be described more comprehensively below with reference to the relevant attached drawings. The preferred embodiments of the present invention are given in the attached drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure content of the present invention more thorough and comprehensive.

[0023] It should be noted that when an element is referred to as "fixed to" another element, it can be directly on the other element or there may also be a middle element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be a middle element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are only for the purpose of illustration and do not represent the only implementation manner.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present invention belongs. The terms used in the description of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0025] Refer to Figure 1 As shown, when an existing automobile is running, the airflow at the B-pillar will form an unstable shear layer at the trailing edge of the B-pillar. The unstable shear layer forms continuously shedding vortices at the rear of the rear side window. The vortices hit the trailing edge of the rear side window and break. This process repeats multiple times per second and resonates with the cavity formed by the carriage, thereby forming wind noise and wind vibration sound.

[0026] Refer to Figures 2-3As shown in the figure, an embodiment of the present invention provides a device for reducing the wind vibration noise of the rear side window of an automobile, which includes a cover plate 1, a vehicle body column 2, a driving mechanism 3, a rear side window 4 of the automobile, a lifting glass 5 and a reset mechanism 6.

[0027] Specifically, the cover plate 1 is arranged on the outer side surface of the vehicle body column 2 of the automobile. One side of the cover plate 1 is linked to the vehicle body column 2. For example, the side of the cover plate 1 close to the vehicle head is linked to the vehicle body column 2, and the other side of the cover plate 1 can rotate relative to the vehicle body column 2; In this embodiment, the vehicle body column 2 is the vehicle body B-pillar. In other embodiments of the present invention, the vehicle body column 2 can also be the A-pillar or other pillars.

[0028] Furthermore, the driving mechanism 3 is connected to the lifting glass 5 of the rear side window 4 of the automobile. The lifting glass 5 is connected to the vehicle body column 2 through a lifting slide rail. The lifting glass 5 can rise or fall through the lifting slide rail. When the lifting glass 5 descends, the driving mechanism 3 can drive the other side of the cover plate 1 to rotate outwards, so that an included angle is formed between the outer surface of the cover plate 1 and the outer surface of the vehicle body column 2;

[0029] The reset mechanism 6 is connected to the cover plate 1 and the vehicle body column 2. When the lifting glass 5 rises, the reset mechanism 6 can drive the other side of the cover plate 1 to rotate inwards, so that the outer surface of the cover plate 1 is flush with the outer surface of the vehicle body column 2.

[0030] In the present invention, when the lifting glass 5 of the rear side window 4 of the automobile drops, the cover plate 1 is lifted, and the airflow of the vehicle body column 2 is guided to the rear of the rear side window 4 of the automobile. Thus, on the one hand, since the airflow is guided by the cover plate 1 and does not directly act on the rear side window 4 of the automobile, the wind vibration sound generated inside the vehicle due to the excitation of the external noise is reduced; on the other hand, the airflow is guided outwards, making the movement of the airflow smoother, reducing the airflow entering the vehicle, and reducing the air resistance of the vehicle when the rear side window 4 is opened.

[0031] In an embodiment of the present invention, the driving mechanism 3 includes a guide rail 31 and a slider 32. The guide rail 31 is arranged inside the vehicle body column 2, and the guide rail 31 is parallel to the lifting slide rail; One side of the slider 32 is fixed on the lifting glass 5, and the other side of the slider 32 is slidably connected to the guide rail 31; Wherein, the top surface of the slider 32 also slidably contacts the bottom surface of the other side of the cover plate 1;

[0032] When the lifting glass 5 rises or falls, the slider 32 moves up or down along the guide rail 31, and the slider 32 can drive the other side of the cover plate 1 to rotate inwards or outwards around the vehicle body column 2.

[0033] To avoid interference during the rotation of the cover plate 1 and meet the requirement that the cover plate 1 can be lifted when the slider 32 moves downward, the cover plate 1 is in the shape of a triangular frustum with a smaller top and a larger bottom, and the cross-section of the cover plate 1 is an isosceles triangle; the slider 32 is in the shape of a trapezoidal frustum, and the inclined surface of the trapezoidal frustum is in contact with the bottom surface of the triangular frustum. It should be noted that with the above structure, the included angle between the cover plate 1 and the vehicle body pillar 2 changes with the opening degree of the rear side window 4 of the vehicle. When the opening degree of the rear side window 4 of the vehicle increases, the slider 32 moves downward synchronously with the lifting glass 5, lifting the cover plate 1, and the included angle between the cover plate 1 and the vehicle body pillar 2 increases; when the opening degree of the rear side window 4 of the vehicle decreases, the slider 32 moves upward synchronously with the lifting glass 5, and due to the action of the reset mechanism 6, the included angle between the cover plate 1 and the vehicle body pillar 2 decreases.

[0034] In an embodiment of the present invention, the cover plate 1 and the vehicle body pillar 2 are connected by a hinge 7. The reset mechanism includes a volute spring, the volute spring is sleeved on the hinge 7, and the volute spring is respectively connected to the cover plate 1 and the vehicle body pillar 2.

[0035] Referring to Figures 4-5 As shown, it can be seen that after adopting the device of the present invention, more airflows flow out of the vehicle, resulting in relatively less airflow entering the interior of the vehicle compartment; inside the vehicle compartment, especially in the rear seat area, the streamlines become sparse and the vortex structures become fewer.

[0036] Referring to Figure 6 As shown, compared with the prior art, the sound pressure levels in the area near the rear opening of the present invention are all reduced, especially in the trailing edge area; specifically, it changes from 134.2 dB to 130.0 dB, a decrease of 4.2 dB; from 19.5 Hz to 19.8 Hz, an increase of 0.3 Hz; it can be seen that the present invention plays a certain role in suppressing wind-induced noise.

[0037] In summary, the advantages of the present invention are as follows:

[0038] When the lifting glass 5 of the rear side window 4 of the vehicle rises, the reset mechanism 6 can drive the other side of the cover plate 1 to rotate inward, making the outer surface of the cover plate 1 flush with the outer surface of the vehicle body pillar 2, thus ensuring the necessary functions of the vehicle body and not affecting the appearance of the vehicle; when the lifting glass 5 of the rear side window 4 of the vehicle descends, the driving mechanism 3 can drive the other side of the cover plate 1 to rotate outward, forming an included angle between the outer surface of the cover plate 1 and the outer surface of the vehicle body pillar 2, so as to guide the direction of the airflow, so that the airflow does not directly act on the rear side window 4 of the vehicle, reducing the wind noise and the in-vehicle wind vibration noise, improving the comfort of the vehicle, reducing the air resistance when opening the rear side window 4 of the vehicle, and without an additional control system, with low cost and simple structure.

[0039] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the various technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as falling within the scope described in this specification.

[0040] The above-described embodiments only express several implementation manners of the present application, but should not be construed as limiting the scope of the patent of the present application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several modifications and improvements can still be made, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the appended claims.

Claims

1. A device for reducing the wind vibration noise of the rear side window of an automobile, characterized in that, Comprising: A cover plate, arranged on the outer side surface of a vehicle body pillar of an automobile, one side of the cover plate is linked to the body pillar, and the other side of the cover plate can rotate relative to the body pillar; A driving mechanism, connected to a lifting glass of a rear side window of the automobile, the lifting glass is connected to the body pillar through a lifting slide rail, when the lifting glass descends, the driving mechanism can drive the other side of the cover plate to rotate outwards, so that an included angle is formed between the outer surface of the cover plate and the outer surface of the body pillar; A reset mechanism, connected to the cover plate and the body pillar, when the lifting glass ascends, the reset mechanism can drive the other side of the cover plate to rotate inwards, so that the outer surface of the cover plate is flush with the outer surface of the body pillar; The driving mechanism includes a guide rail and a slider, the guide rail is arranged inside the body pillar, and the guide rail is parallel to the lifting slide rail; one side of the slider is fixed on the lifting glass, and the other side of the slider is slidably connected to the guide rail; wherein, the top surface of the slider also contacts the bottom surface of the other side of the cover plate; The cover plate is in the shape of a triangular frustum with a smaller top and a larger bottom, and the cross section of the cover plate is an isosceles triangle; the slider is in the shape of a trapezoidal frustum, and the inclined surface of the trapezoidal frustum is in sliding contact with the bottom surface of the triangular frustum; When the lifting glass ascends or descends, the slider moves up or down along the guide rail, and the slider can drive the other side of the cover plate to rotate inwards or outwards around the body pillar, when the opening degree of the rear side window of the automobile increases, the included angle between the cover plate and the body pillar increases synchronously.

2. The device for reducing the wind vibration noise of the rear side window of an automobile according to claim 1, wherein The cover plate and the body pillar are linked through a hinge.

3. The device for reducing the wind vibration noise of the rear side window of an automobile according to claim 2, characterized in that, The reset mechanism includes a volute spring, the volute spring is sleeved on the hinge, and the volute spring is respectively connected to the cover plate and the body pillar.

4. The device for reducing the wind vibration noise of the rear side window of an automobile according to claim 1, characterized in that, The body pillar is a vehicle body B-pillar.

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