A structure for guiding airflow split
By setting raised or recessed strips with increasing or decreasing width, height and length on the outside of the rearview mirror housing, the noise and vibration problems of the car rearview mirror during high-speed driving are solved, and the orderly diversion of airflow and noise reduction are achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI GANXIANG AUTOMOBILE MIRROR IND
- Filing Date
- 2025-06-23
- Publication Date
- 2026-07-14
AI Technical Summary
When a car is traveling at high speed, the airflow is blocked and diverted by the rearview mirror, which causes a whistling sound and affects the vibration of the rearview mirror.
Several raised or recessed strips, which appear as slender structures when viewed from top to bottom, are set on the outside of the rearview mirror housing. The width, height, and length increase or decrease sequentially, and the spacing between adjacent strips gradually increases, forming a structure that guides and diverts airflow.
By guiding airflow in an orderly manner, noise generation is reduced, the impact of airflow on the rearview mirror is minimized, and the vibration problem is improved.
Smart Images

Figure CN224490860U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a structure that can guide airflow, specifically a structure that is simple in structure, increases airflow diversion, guides airflow outward in an orderly manner during the flow process, reduces noise generation, and changes the impact of airflow on the rearview mirror. Background Technology
[0002] The smooth shape of a typical car rearview mirror can cause airflow to be blocked and diverted when the car is traveling at high speed. After passing through the decorative cover and shield, a certain amount of mixed airflow is formed behind the rearview mirror, which can sometimes cause whistling noise and also affect the overall vibration of the rearview mirror. Utility Model Content
[0003] To address the aforementioned problems, the main objective of this utility model is to provide a simple structure that incorporates an airflow diversion mechanism to guide the airflow outward in an orderly manner during its flow, thereby reducing noise and altering the impact of airflow on the rearview mirror.
[0004] This utility model solves the above-mentioned technical problems through the following technical solution: a structure for guiding airflow diversion, the structure being located outside the rearview mirror housing of an automobile; the structure for guiding airflow diversion includes: a rearview mirror housing, and a plurality of diversion devices for guiding airflow diversion disposed outside the rearview mirror housing, the diversion devices being a plurality of raised strips or grooves that are elongated structures when viewed from top to bottom; if the diversion device is a plurality of raised strips: among the plurality of raised strips, the width of the raised strips viewed from the front to the back of the automobile increases sequentially, the height of the raised strips viewed from the front to the back of the automobile increases sequentially, and the length of the raised strips viewed from the front to the back of the automobile increases sequentially.
[0005] If the diversion device consists of several grooved strips:
[0006] Among the several grooves, the width of the grooves decreases sequentially when viewed from the front to the rear of the car.
[0007] Among the several grooves, the height of the grooves decreases sequentially when viewed from the front to the rear of the car.
[0008] Among the several groove strips, the length of the groove strips decreases sequentially when viewed from the front to the back of the car;
[0009] Looking from the front to the back of the car, the spacing between adjacent raised or recessed strips gradually increases.
[0010] In a specific embodiment of this utility model, the raised strip or groove strip includes 2-6 strips.
[0011] In a specific embodiment of this utility model, the distance between adjacent raised strips or grooved strips is 8-15mm.
[0012] In a specific embodiment of this utility model, the cross-section of the raised strip or the grooved strip is "n" shaped or rectangular.
[0013] In a specific embodiment of this utility model, the longitudinal section of the raised strip or the grooved strip is rectangular or waist-shaped.
[0014] In a specific embodiment of this utility model, if there are several raised strips, the width of the foremost raised strip is 0.5-1.5mm, and the width of the last raised strip is 2.5-4.5mm.
[0015] In a specific embodiment of this utility model, if there are several groove strips, the width of the foremost groove strip ranges from 2.5 to 4.5 mm, and the width of the last groove strip ranges from 0.5 to 1.5 mm.
[0016] In a specific embodiment of this utility model, the height range of the foremost protrusion is 0.5-1.0mm, and the height range of the last protrusion is 2.0-3.5mm.
[0017] In a specific embodiment of this utility model, the height range of the foremost groove strip is 2.0-3.5mm, and the height range of the last groove strip is 0.5-1.0mm.
[0018] In a specific embodiment of this utility model, the front-to-back span of the raised strip or the grooved strip is 1 / 10 to 1 / 5 of the front-to-back length of the entire rearview mirror housing.
[0019] The positive and progressive effects of this utility model are as follows: The airflow diversion structure provided by this utility model changes the airflow structure of the car rearview mirror. Through the appearance and structural design, the airflow diversion structure is increased, so that the airflow is guided outward in an orderly manner during the flow process, reducing the occurrence of noise and changing the impact of airflow on the rearview mirror. Attached Figure Description
[0020] Figure 1 This is one of the overall structural schematic diagrams of this utility model.
[0021] Figure 2 This is the second schematic diagram of the overall structure of this utility model.
[0022] The following are the names corresponding to the reference numerals in this utility model:
[0023] 1. Rearview mirror housing; 2. Diverter device. Detailed Implementation
[0024] The preferred embodiments of this utility model are given below with reference to the accompanying drawings to illustrate the technical solution of this utility model in detail.
[0025] Figure 1 This is one of the overall structural schematic diagrams of this utility model. Figure 2 This is the second schematic diagram of the overall structure of this utility model. As shown in the figure above: This utility model provides a structure for guiding airflow diversion, which is located outside the rearview mirror housing of an automobile; the structure for guiding airflow diversion includes: a rearview mirror housing 1, and a plurality of diversion devices 2 for guiding airflow diversion disposed outside the rearview mirror housing, wherein the diversion device 2 is a plurality of raised strips or grooves that are slender structures when viewed from top to bottom.
[0026] When the diversion device 2 consists of several raised strips: the width of the raised strips viewed from the front to the back of the vehicle increases sequentially, the height of the raised strips viewed from the front to the back of the vehicle increases sequentially, and the length of the raised strips viewed from the front to the back of the vehicle increases sequentially.
[0027] When the diversion device 2 consists of several grooved strips: the width of the grooved strips viewed from the front of the car decreases sequentially, the height of the grooved strips viewed from the front of the car decreases sequentially, and the length of the grooved strips viewed from the front of the car decreases sequentially; the spacing between adjacent raised strips or grooved strips gradually increases when viewed from the front of the car.
[0028] In the specific implementation of this utility model, the raised strip or groove strip includes 2-6 strips, and other parameters can be selected according to specific needs.
[0029] In the specific implementation of this utility model, the distance between adjacent raised strips or grooved strips is 8-15mm. Other parameters can be selected according to specific needs.
[0030] In the specific implementation of this utility model, the cross-section of the raised strip or the grooved strip is "n" shaped or rectangular.
[0031] In the specific implementation of this utility model, the longitudinal section of the raised strip or the grooved strip is rectangular or waist-shaped.
[0032] If there are multiple raised strips, the width of the first raised strip should be 0.5-1.5mm, and the width of the last raised strip should be 2.5-4.5mm. Other parameters can be selected according to specific needs.
[0033] If there are multiple grooves, the width of the first groove should be 2.5-4.5mm, and the width of the last groove should be 0.5-1.5mm. Other parameters can be selected according to specific needs.
[0034] The height range of the first raised strip is 0.5-1.0mm, and the height range of the last raised strip is 2.0-3.5mm. Other parameters can be selected according to specific needs.
[0035] The height range of the first groove is 2.0-3.5mm, and the height range of the last groove is 0.5-1.0mm. Other parameters can be selected according to specific needs.
[0036] In the specific implementation of this utility model, the front and rear span of the raised strip or the groove strip is 1 / 10 to 1 / 5 of the front and rear length of the entire rearview mirror housing. Other parameters can be selected according to specific needs.
[0037] This utility model consists of multiple raised or recessed strips of varying lengths on the rearview mirror housing 1. Since airflow passing through the rearview mirror and the door passage will generate noise, this feature guides the airflow outward to reduce the tail vortex, thus achieving the effect of noise reduction.
[0038] This utility model incorporates an airflow diversion structure through its appearance and structural design, which guides the airflow outward in an orderly manner during the flow process, thereby reducing noise generation.
[0039] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection of this utility model as defined by the appended claims and their equivalents.
Claims
1. A structure for guiding airflow diversion, the structure being located outside the housing of a car rearview mirror; characterized in that: The structure for guiding airflow diversion includes: a rearview mirror housing, and several diversion devices for guiding airflow diversion disposed outside the rearview mirror housing. The diversion devices are several slender protrusions or grooves that appear as elongated structures when viewed from top to bottom. If the diversion device consists of several raised strips: Among the several raised strips, the width of the raised strips increases sequentially when viewed from the front to the rear of the car. Among the several raised strips, the height of the raised strips increases sequentially when viewed from the front to the rear of the car. Among the several raised strips, the length of the raised strips increases sequentially when viewed from the front to the back of the car; If the diversion device consists of several grooved strips: Among the several grooves, the width of the grooves decreases sequentially when viewed from the front to the rear of the car. Among the several grooves, the height of the grooves decreases sequentially when viewed from the front to the rear of the car. Among the several groove strips, the length of the groove strips decreases sequentially when viewed from the front to the back of the car; Looking from the front to the back of the car, the spacing between adjacent raised or recessed strips gradually increases.
2. The structure for guiding airflow diversion according to claim 1, characterized in that: The raised or recessed strips consist of 2-6 strips.
3. The structure for guiding airflow diversion according to claim 1, characterized in that: The distance between adjacent raised or recessed strips is 8-15mm.
4. The structure for guiding airflow diversion according to claim 1, characterized in that: The cross-section of the raised or grooved strip is "n" shaped or rectangular.
5. The structure for guiding airflow diversion according to claim 2, characterized in that: The longitudinal section of the raised or grooved strip is rectangular or waist-shaped.
6. The structure for guiding airflow diversion according to claim 2, characterized in that: If there are several raised strips, the width of the first raised strip is 0.5-1.5mm, and the width of the last raised strip is 2.5-4.5mm.
7. The structure for guiding airflow diversion according to claim 2, characterized in that: If there are several grooves, the width of the first groove is 2.5-4.5mm, and the width of the last groove is 0.5-1.5mm.
8. The structure for guiding airflow diversion according to claim 1, characterized in that: The height of the first raised strip ranges from 0.5 to 1.0 mm, and the height of the last raised strip ranges from 2.0 to 3.5 mm.
9. The structure for guiding airflow diversion according to claim 1, characterized in that: The height of the first grooved strip ranges from 2.0 to 3.5 mm, and the height of the last grooved strip ranges from 0.5 to 1.0 mm.
10. The structure for guiding airflow diversion according to claim 1, characterized in that: The front-to-back span of the raised or recessed strip is 1 / 10 to 1 / 5 of the front-to-back length of the entire rearview mirror housing.