A structure for solving the whistling sound at the tip of a car hood

Abstract

This invention discloses a structure for solving the whistling sound at the tip of a car hood, belonging to the field of automotive technology. It includes a front bumper body, which is the main component of this structure; a hood, hinged to the vehicle body and located on top of the front bumper body; a front bumper grille trim strip, installed on the outer side of the front bumper body; and a spoiler cylinder, disposed on the outer surface of the front bumper grille trim strip. This invention, by incorporating the spoiler cylinder, disrupts the original airflow path through its design on the front bumper grille trim strip. The spoiler cylinder's features allow airflow to bypass the tip of the hood or reduce its direct impact, thereby reducing airflow separation and vortex formation, thus lowering the probability of whistling. Furthermore, the spoiler cylinder can be molded onto the outer surface of the front bumper grille trim strip, incurring only a small molding cost, which is negligible and easy to implement.

Description

Technical Field

[0001] This invention belongs to the field of automotive technology, specifically relating to a structure for solving the whistling sound at the tip of a car hood. Background Technology

[0002] With societal development, consumers have placed higher demands on vehicle performance: driving performance, intelligent features, fuel economy, low carbon emissions, and vibration and noise levels. Vehicle NVH performance, especially wind noise at high speeds, has become a key performance factor affecting the driving and riding experience. Even slight air leakage or whistling noises inside the vehicle can reduce passenger comfort. Therefore, it is necessary to minimize in-vehicle wind noise levels to meet passenger needs. Some existing vehicle models exhibit at least the following deficiencies during use:

[0003] 1. In some existing models, the surface difference between the outer trim of the front bumper grille and the tip of the hood is too small. Combined with the influence of manufacturing tolerances, when the surface difference is within 1mm, a whistling sound will be produced when the vehicle is traveling at speeds above 60km / h, which seriously affects the driving and riding experience of the driver and passengers.

[0004] 2. The existing technical solution for the whistling problem at the tip of the hood is to add a sealing strip to the tip of the hood. However, this solution will increase costs and the hood sheet metal repair cycle is long, resulting in huge mold costs. Summary of the Invention

[0005] The purpose of this invention is to provide a structure for solving the whistling sound at the tip of a car hood, thereby addressing the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A structure for resolving whistling noises from the tip of a car hood includes:

[0008] The front bumper body of the car is the main component of this structural design.

[0009] The hood is hinged to the vehicle body and located on top of the front bumper body of the vehicle;

[0010] The front bumper grille trim strip is installed on the outer side of the front bumper body of the vehicle;

[0011] A spoiler cylinder is disposed on the outer surface of the front bumper grille trim.

[0012] Preferably, the surface difference between the outer trim strip of the front bumper grille and the tip of the hood is less than 1 mm.

[0013] Preferably, the front bumper grille trim strip is fixed to the front bumper body of the vehicle by adhesive.

[0014] Preferably, the outer surface of the front bumper grille trim is coated with a matte paint coating. The matte coating has a low-gloss surface effect, which can effectively reduce reflections and fingerprints.

[0015] Preferably, the front bumper grille trim is arranged in a U-shape, and the front bumper grille trim is made of aluminum alloy, which has corrosion resistance and excellent surface treatment performance.

[0016] Preferably, the diameter of the turbulence cylinder is 0.5 mm.

[0017] Preferably, the spoiler cylinder can be molded on the outer surface of the front bumper grille trim, which can increase the overall design's sense of layering and three-dimensionality, and only incurs a small amount of molding cost, making the cost negligible and easy to implement.

[0018] A method for using a structure to resolve whistling noises at the tip of a car hood includes the following steps:

[0019] S1: First select a car where the difference between the outer trim of the front bumper grille and the tip of the hood is within 1mm;

[0020] S2: Then, a spoiler cylinder with a cross-sectional diameter of 0.5mm is set on the outer surface of the front bumper grille trim of the car;

[0021] S3: Finally, as the vehicle moves, the 0.5mm diameter spoiler cylinder set by S2 can obstruct the airflow and prevent the airflow from directly impacting the tip of the hood along the outer trim of the front bumper grille, which can effectively avoid the whistling sound generated by the tip of the hood during vehicle movement.

[0022] Compared with the prior art, the beneficial effects of the present invention are:

[0023] By incorporating a spoiler cylinder—a feature designed on the outer trim of the front bumper grille—the original airflow path is disrupted. This spoiler cylinder allows airflow to bypass the tip of the hood or reduces its direct impact, thereby reducing airflow separation and vortex formation. The spoiler cylinder also increases airflow resistance and friction, causing it to slow down. Lower airflow speeds reduce airflow separation and vortex generation, thus reducing the probability of whistling sounds. This can optimize the external airflow of the vehicle to a certain extent and improve aerodynamic performance and ride comfort during driving.

[0024] Designing a spoiler cylinder on the outer trim of the front bumper grille offers a more economical and feasible solution. This design allows the spoiler cylinder to be molded onto the outer surface of the front bumper grille trim, incurring only minor mold-making costs, which are negligible. It is easy to implement, requires no modification to the hood, and avoids the problems of mold costs and long sheet metal repair cycles. Furthermore, adding a spoiler cylinder to the outer trim of the front bumper grille increases the overall design's layering and three-dimensionality, further enhancing the vehicle's appearance. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the front structure of the automobile front bumper body of the present invention;

[0026] Figure 2 This is a side cross-sectional structural diagram of the front bumper body of the automobile according to the present invention;

[0027] Figure 3 This is a front view schematic diagram of the turbulence-disrupting cylinder of the present invention;

[0028] Figure 4 This is a test comparison curve diagram of the present invention.

[0029] In the picture: 1. Front bumper body; 2. Hood; 3. Front bumper grille trim; 4. Spoiler cylinder. Detailed Implementation

[0030] The present invention will be further described below with reference to embodiments.

[0031] The following embodiments are used to illustrate the present invention, but should not be used to limit the scope of protection of the present invention. The conditions in the embodiments can be further adjusted according to specific conditions, and simple improvements to the method of the present invention under the premise of the concept of the present invention are all within the scope of protection claimed by the present invention.

[0032] Please see Figure 1-4 The present invention provides a structure for solving the whistling sound at the tip of a car hood, including a front bumper body 1, which is the main body of the structure design. The front bumper body 1 serves as a protective device for the front of the car, aiming to reduce damage to the front of the vehicle during a collision or impact, and to provide a mounting position for certain safety systems. The hood 2 is connected to the vehicle body by a hinge and can be opened and closed to perform operations such as engine maintenance, repair, or adding fluid.

[0033] One optional embodiment: the front bumper grille trim 3 is installed on the outside of the front bumper body 1 of the car; the surface difference between the front bumper grille trim 3 and the tip of the hood 2 is less than 1mm; the front bumper grille trim 3 is fixed to the front bumper body 1 of the car by adhesive.

[0034] One optional embodiment: the outer surface of the front bumper grille trim 3 is coated with a matte paint coating, which has a low-gloss surface effect and can effectively reduce reflections and fingerprints; the front bumper grille trim 3 is arranged in a U-shape, and the front bumper grille trim 3 is made of aluminum alloy, which has corrosion resistance and excellent surface treatment performance.

[0035] One optional embodiment is a spoiler cylinder 4, which is disposed on the outer surface of the front bumper grille trim 3; the diameter of the spoiler cylinder 4 is 0.5mm; the spoiler cylinder 4 can be formed by molding on the outer surface of the front bumper grille trim 3, which can increase the sense of layering and three-dimensionality of the overall design, and only brings a small amount of molding cost, which is negligible and easy to implement.

[0036] One optional embodiment is that the spoiler cylinder 4 can also be bonded to the outer surface of the front bumper grille trim 3 using a special adhesive or glue. This connection method can provide strong adhesion and does not require obvious bolts or other fasteners.

[0037] Please see Figure 1-4 This invention provides a method for using a structure to solve the whistling sound at the tip of a car hood, comprising the following steps:

[0038] S1: First select a car where the difference between the outer trim of the front bumper grille and the tip of the hood is within 1mm;

[0039] S2: Then, a spoiler cylinder with a cross-sectional diameter of 0.5mm is set on the outer surface of the front bumper grille trim of the car;

[0040] S3: Finally, as the vehicle moves, the 0.5mm diameter spoiler cylinder set by S2 can obstruct the airflow and prevent the airflow from directly impacting the tip of the hood along the outer trim of the front bumper grille, which can effectively avoid the whistling sound generated by the tip of the hood during vehicle movement.

[0041] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A structure for solving the whistling sound at the tip of a car hood, characterized in that, Comprising: An automotive front bumper body (1), which is the main body of this structural design; A hood (2), which is hinged to the vehicle body and located at the top of the automotive front bumper body (1); An outer decorative strip of the front bumper grille (3), which is installed on the outer side of the automotive front bumper body (1); A spoiler cylinder (4), which is arranged on the outer surface of the outer decorative strip of the front bumper grille (3); The surface difference between the outer decorative strip of the front bumper grille (3) and the tip of the hood (2) is less than 1 mm; Its usage method includes the following steps: S1: First, select a vehicle with a surface difference within 1 mm between the outer decorative strip of the front bumper grille and the tip of the hood; S2: Then, set a spoiler cylinder with a cross-sectional diameter of 0.5 mm on the outer surface of the outer decorative strip of the front bumper grille of the vehicle; S3: Finally, as the vehicle travels, the spoiler cylinder with a cross-sectional diameter of 0.5 mm set in S2 can obstruct the airflow, preventing the airflow from directly impacting the tip of the hood upward along the outer decorative strip of the front bumper grille, and effectively avoiding the whistling sound generated at the tip of the hood during vehicle travel.

2. The structure for solving the whistling sound at the tip of a car hood according to claim 1, characterized in that, The outer decorative strip of the front bumper grille (3) is fixed to the automotive front bumper body (1) through an adhesive.

3. The structure for solving the whistling sound at the tip of a car hood according to claim 1, characterized in that, A matte paint coating is provided on the outer surface of the outer decorative strip of the front bumper grille (3).

4. The structure for solving the whistling sound at the tip of a car hood according to claim 1, characterized in that, The outer decorative strip of the front bumper grille (3) is arranged in a U-shape, and the outer decorative strip of the front bumper grille (3) is made of aluminum alloy. The outer decorative strip of the front bumper grille (3) made of aluminum alloy has corrosion resistance and excellent surface treatment performance.

5. The structure for solving the whistling sound at the tip of a car hood according to claim 1, characterized in that, The diameter of the spoiler cylinder (4) is 0.5 mm.

6. The structure for solving the whistling sound at the tip of a car hood according to claim 1, characterized in that, The spoiler cylinder (4) can be formed by trimming the mold on the outer surface of the outer decorative strip of the front bumper grille (3).

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