CN206871203U - A kind of air-spray noise reduction skylight spoiler - Google Patents

Abstract

An air jet noise-reducing sunroof spoiler can introduce the airflow of an air intake channel into the deflector and spray it out in the form of a jet, which can effectively reduce wind resistance and reduce noise generation. It includes an air intake channel, a partition plate, an air guide channel, a base, and a connecting plate; the air intake channel, the air guide channel, the connecting plate, and the separator plate are arranged inside the spoiler; the air intake channel is provided with a single or more, which are arranged on the windward surface of the spoiler and communicate with the outside world; the air guide channel extends backwards with the air intake channel as the starting point, and its cross-sections at the end jointly form the injection port, and its longitudinal cross-sectional shape is from wide to wide Narrowing, the transverse section changes from narrow to wide. The plurality of sets of air guide channels are separated by the partition plate, and the partition plate starts from the air guide channel and extends forward to the intake channel.

Description

An air jet noise reduction sunroof spoiler

technical field

The utility model relates to the field of automobile sunroofs, in particular to a sunroof deflector with a noise reduction function.

Background technique

Due to the needs of ventilation, ventilation, and defogging in the vehicle, people are used to opening the sunroof when the vehicle is running, which in turn generates wind vibration noise. It refers to a high-intensity, low-frequency noise generated by the interaction between the pressure pulsation of the airflow outside the vehicle and the air in the cavity of the vehicle after the sunroof is opened during driving. The long-term continuous wind vibration noise will cause extremely high noise for the occupants in the vehicle. Strong tinnitus, dizziness and even acceleration fatigue directly affect the driving safety and ride comfort of the car. Taking the wind-induced noise of automobiles as an example, IQS (Initial Quality Study) conducted a survey report on the aerodynamic noise of various parts of automobiles from 2000 to 2004. Among consumers' complaints about aerodynamic noise, 24% came from wind-induced noise. The utility model is in order to reduce this noise.

The comparative patent document (201110445605.8) invented a sunroof spoiler for automobiles, which reduces the wind vibration noise after the sunroof is opened. It achieves the suppression of wind vibration noise by destroying the shedding of eddy current through the sawtooth spoiler and the transmission mechanism that can adjust the angle. However, this method is aimed at reducing the noise by destroying the formation of the vortex, which will cause the streamline of the air fluid to be destroyed, thereby increasing the resistance during the driving process of the car; on the other hand, destroying the vortex itself will also Bring some turbulent noise.

In this regard, the applicant has developed and designed a deflector that utilizes air jets to suppress wind noise, so as to overcome the above-mentioned deficiencies.

Contents of the invention

Through the simulation analysis of fluid mechanics and acoustics, it is found that the noise generated by the airflow is closely related to the formation and development of the turbulent vortex at the opening when the car is moving. In order to overcome the deficiency that the existing sunroof spoiler can not reduce the wind resistance and noise reduction of the car, the utility model provides an air jet noise-reducing sunroof spoiler, which can reduce or even eliminate the skylight opening Vortex formation at the leading edge.

The technical scheme adopted by the utility model to solve the technical problem is: an air jet noise-reducing skylight spoiler consists of a spoiler, an air intake channel, a shaft mounting hole, a partition plate, an air guide channel, a base, and a connecting plate and so on;

The spoiler is installed on the front edge of the car sunroof opening, and the whole is wedge-shaped, and its thinner side is arranged at the front; the rotating shaft installation hole is also arranged on the spoiler, which can be connected with the angle adjustment mechanism. cooperate to make the spoiler rotate around the rotating mounting hole as a whole;

Further, inside the flow-around plate, the air intake channel, air guide channel, connecting plate, and partition plate are also provided;

Further, there are one or more air intake passages, which are arranged on the windward surface of the spoiler and communicate with the outside world;

Further, the air guiding channel is provided with multiple groups, and is smoothly connected with the air intake channel; the air guiding channel extends backwards starting from the air intake channel, and its longitudinal cross-sectional shape changes from wide to narrow, and its transverse cross-section changes from narrow to wide ;

Further, the plurality of groups of air guide channels are separated by the partition plate, and the partition plate starts from the air guide channel and extends forward to the intake channel;

Further, the connecting plate is strip-shaped, and the dividing plate is connected with the base through the connecting plate, so that the dividing plate is kept between the air guide channel and the intake channel;

The beneficial effect of the utility model is that the airflow of the air intake channel can be introduced into the deflector and sprayed out in the form of a jet, which can effectively reduce the wind resistance; by reducing or even eliminating the vortex, the generation of noise can also be reduced; The hollow structure can reduce the weight of the spoiler.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

Fig. 1 is an overall effect diagram of a plurality of air intake passage embodiments of the present invention.

Fig. 2 is a longitudinal sectional view of the utility model.

Fig. 3 is an overall effect diagram of an embodiment of a single air intake channel of the present invention.

Fig. 4 is a transverse cross-sectional view of a plurality of air intake passage embodiments of the present invention.

Fig. 5 is a transverse sectional view of an embodiment of a single air intake channel of the present invention.

Fig. 6 is a schematic flow diagram of the utility model when it works.

In the figure 1. Automobile, 2. Sunroof, 30. Spoiler, 31. Air intake channel, 32. Shaft installation hole, 33. Partition plate, 34. Air guide channel, 35. Base, 36. Connecting plate.

detailed description

As shown in Figures 1 and 2, an air jet noise-reducing sunroof spoiler is composed of a spoiler, an air intake channel, a shaft mounting hole, a partition plate, an air guide channel, a base, a connecting plate, and the like;

The spoiler is installed on the front edge of the car sunroof opening, and the whole is wedge-shaped, and its thinner side is arranged at the front; the rotating shaft installation hole is also arranged on the spoiler, which can be connected with the angle adjustment mechanism. Cooperate to make the spoiler rotate around the rotating installation hole as a whole; different rotation angles can be set at different vehicle speeds, so that the air flow line on the roof is smoother, thereby reducing wind resistance;

As shown in Figure 2 and Figure 4; inside the spoiler, the air intake channel, air guide channel, connecting plate, and partition plate are also provided;

As shown in Figure 4, the air intake channel is provided with a plurality, and is arranged on the windward surface of the spoiler to communicate with the outside world; behind each air intake channel, a corresponding partition plate, air guide The air guide channel extends backwards starting from the air intake channel, its longitudinal section shape narrows from wide, and its transverse section changes from narrow to wide; at the end, its sections together form an injection port, and the injection port can cover the The full width of the spoiler so that the jets constitute a flow surface;

As shown in Figure 5, the air intake channel is provided with a single set, and a group of partition plates and air guide channels are arranged behind it. The air guide channel extends backward from the intake channel, and its longitudinal cross-sectional shape changes from wide to wide Narrow, the transverse section changes from narrow to wide; the injection port formed at the end can cover the entire width of the spoiler;

The air guide channel and the air intake channel are smoothly connected through a curved surface, thereby reducing wind resistance and making the air flow uniform;

As shown in Figure 2, the plurality of groups of air guide channels are separated by the partition plate, and the partition plate starts from the air guide channel and extends forward to the intake channel; preferably, The partition plate extends backwards starting from the air intake passage, and its thickness gradually narrows;

The connecting plate is strip-shaped, and the separating plate is connected with the base through the connecting plate to play a supporting role, so that the separating plate is kept between the air guide channel and the air intake channel;

As shown in Figure 6, after using the utility model, the streamline condition of the airflow on the roof can be effectively improved, and the flow vortex can be reduced or even eliminated, thereby reducing wind resistance and noise generation.

Of course, the above are only preferred embodiments of the present utility model, and are not intended to limit the patent scope of the present utility model. All simple modifications and equivalent structural changes made by using the description and drawings of the utility model, or related implementation The combination of examples should all be included in the scope of patent protection of the utility model in the same way.

Claims (5)

1. An air jet noise-reducing sunroof spoiler, which can cooperate with an angle adjustment mechanism on the spoiler and rotate a certain angle. Base, connecting plate; The air intake channel, the air guide channel, the connection plate and the partition plate are arranged inside the spoiler; There are one or more air intake passages, which are arranged on the windward surface of the spoiler and communicate with the outside world. 2. The air jet noise-reducing sunroof spoiler according to claim 1, characterized in that: the air guide channel extends backwards starting from the air intake channel, and the sections at the end jointly form an injection port. 3. The air jet noise-reducing sunroof spoiler according to claim 1, characterized in that: the longitudinal section of the air guide channel changes from wide to narrow, and the transverse section changes from narrow to wide. 4. A kind of air jet noise-reducing skylight spoiler according to claim 2, characterized in that: the air guide channels are separated by the partition plate, and the partition plate is from the air guide channel to The starting point extends forward to the air intake channel. 5 . The air jet noise-reducing sunroof spoiler according to claim 1 , characterized in that: the partition board extends backward from the air intake channel, and its thickness gradually narrows.