Vehicle exterior mirror and vehicle
By installing a spoiler ring on the housing of the vehicle's exterior rearview mirror, which forms a gap fit with the camera and support leg, the problem of airflow noise at the through hole is solved, achieving the effect of reducing wind noise and improving structural strength.
Patent Information
- Application Number
- CN202522077319.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-26
- Publication Date
- 2026-08-25
- Estimated Expiration
- 2035-09-26
AI Technical Summary
Noise is caused by airflow entering through the openings in the exterior rearview mirrors, especially when the vehicle is traveling at high speeds.
A spoiler ring is installed on the housing of the vehicle's exterior rearview mirror. The spoiler ring surrounds the through hole and forms a gap fit between the camera and the support leg. The spoiler ring disturbs the airflow and changes the flow field distribution to reduce noise.
It effectively reduces wind noise in the through-hole area, improves driving safety and structural strength, and reduces production costs.
Smart Images

Figure CN224676015U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of vehicle exterior rearview mirror technology, specifically to vehicle exterior rearview mirrors and vehicles. Background Technology
[0002] In related technologies, vehicle exterior rearview mirrors are usually equipped with cameras. The cameras are located inside the housing of the exterior rearview mirror, and the housing has a through hole facing forward. The camera passes through the through hole to capture images of the scene in front of the vehicle, which can improve driving safety. However, when the vehicle moves forward, outside air will flow into the housing through the through hole. The process of outside air flowing out of the through hole and diffusing into the housing can easily generate noise, especially when the vehicle speed is high. Utility Model Content
[0003] One objective of this utility model is to provide a vehicle exterior rearview mirror to solve the problem that noise is easily generated at the through hole on the housing where the camera is installed due to airflow in the prior art; the second objective is to provide a vehicle.
[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A vehicle exterior rearview mirror includes: a housing with a through hole; a rearview mirror body disposed on the housing, the side of the housing facing the rearview mirror body being an inner surface; a spoiler ring connected to the inner surface, the spoiler ring surrounding the through hole; and a camera disposed between the housing and the rearview mirror body, the camera passing through the spoiler ring and the through hole.
[0005] Based on the aforementioned technical means, by inserting the camera through the through-hole, the housing can avoid obstructing the camera, facilitating an expansion of the camera's field of view and improving driver safety. During installation, due to the camera's assembly requirements, there is a clearance fit between the camera and the through-hole, forming an air duct between the camera and the inner wall of the through-hole. When the vehicle moves forward, external air flows into the rearview mirror through this duct, generating noise. By incorporating a spoiler ring, the airflow into the housing through the through-hole is disturbed, altering the flow field distribution in the area of the through-hole. In other words, the airflow flows along the through-hole towards the spoiler ring, passes through the inner circumference of the spoiler ring, then flows through its end face, and finally diffuses into the entire housing. The airflow velocity decreases in different directions within the housing, thereby reducing wind noise in the area of the through-hole. Furthermore, the rearview mirror housing has a simple structure and low cost.
[0006] Furthermore, the vehicle exterior rearview mirror also includes: multiple support legs connected to the inner surface, the multiple support legs being spaced apart circumferentially along the spoiler ring, the spoiler ring being located between the support legs and the through hole, the top of the support legs being provided with a positioning groove, and the camera being fitted into the positioning groove.
[0007] Based on the aforementioned technical means, by inserting the camera into the positioning groove of the support leg, with the support leg abutting against the end of the camera facing the housing and the outer peripheral surface of the camera, the camera and housing can be pre-positioned, facilitating the connection and fixation between them. By placing a spoiler ring between the support leg and the through-hole, the spoiler ring, being closer to the through-hole than the support leg, can more quickly contact the airflow entering the vehicle's exterior rearview mirror through the through-hole, thus more effectively turbulenting the airflow and significantly reducing wind noise.
[0008] Furthermore, the top of the support leg extends beyond the top of the spoiler ring.
[0009] Based on the above technical means, while ensuring that the turbulence ring achieves its turbulence-disrupting effect, it is possible to avoid interference between the turbulence ring and the camera, which would affect the assembly between the support leg and the camera, thereby improving the effectiveness of camera installation.
[0010] Furthermore, in the axial direction of the spoiler ring, the distance between the spoiler ring and the camera is Q, which satisfies 0mm < Q ≤ 1mm.
[0011] Based on the aforementioned technical means, there is no contact between the spoiler ring and the camera. The airflow entering through the through-hole can be diffused into the rearview mirror through the gap between the spoiler ring and the camera, preventing gas from accumulating near the through-hole and causing noise. In addition, the axial distance between the spoiler ring and the camera is small, with the spoiler ring closer to the camera, ensuring that the spoiler ring is high enough to guarantee the turbulence effect on the airflow entering through the through-hole, thereby effectively reducing wind noise.
[0012] Furthermore, the inner circumferential surface of the turbulence ring is inclined relative to the axis of the through hole, and the inner circumferential surface of the turbulence ring gradually moves away from the through hole from its bottom to its top.
[0013] Based on the above technical means, the inner circumferential surface of the spoiler ring can guide the airflow entering through the through hole. The airflow entering through the through hole gradually increases the diffusion area along the inner circumferential surface of the spoiler ring, and then diffuses into the entire exterior rearview mirror, avoiding the concentration of airflow entering through the through hole, thereby reducing wind noise.
[0014] Furthermore, the housing and the turbulence ring are integrally formed.
[0015] Based on the above technical means, the connection strength between the housing and the spoiler ring is high, which improves the overall structural strength of the vehicle's exterior rearview mirror, reduces the probability of damage to the exterior rearview mirror, and the housing and spoiler ring can be processed and produced simultaneously, resulting in higher production efficiency.
[0016] Furthermore, the inner surface is provided with a groove, and the turbulence ring is located within the groove.
[0017] Based on the above-mentioned technical means, the groove accommodates the spoiler ring, which can reduce the internal space occupied by the spoiler ring in the housing and help improve the space utilization of the vehicle's exterior rearview mirror.
[0018] Furthermore, the inner circumferential surface of the turbulence ring is provided with a turbulence groove, which extends along the axial and / or circumferential direction of the turbulence ring; and / or, the inner circumferential surface of the turbulence ring is provided with a turbulence rib, which extends along the axial and / or circumferential direction of the turbulence ring.
[0019] Based on the above technical means, the turbulence capability of the turbulence ring can be further improved, which is beneficial to reducing wind noise.
[0020] Furthermore, the turbulence ring includes: a first ring portion connected to the inner surface; and a second ring portion connected to the inner surface and the outer peripheral surface of the first ring portion, wherein the top of the second ring portion extends beyond the top of the first ring portion to form an air guide step.
[0021] According to the above-mentioned technical means, the airflow in the through hole flows sequentially along the inner circumferential surface of the first ring, the end face of the first ring, the inner circumferential surface of the second ring, and the end face of the second ring, and finally diffuses into the shell. The airflow path is more tortuous, which can further improve the turbulence effect and reduce wind noise.
[0022] A vehicle including the aforementioned exterior rearview mirror.
[0023] The beneficial effects of this utility model are: (1) By inserting the camera through the through hole, the housing can avoid obstructing the camera, which facilitates expanding the camera's field of view and improves the driver's safety. During installation, due to the camera's assembly requirements, there is a clearance fit between the camera and the through hole. The inner wall of the camera and the through hole form an air duct. When the vehicle moves forward, external air will flow into the rearview mirror through the air duct, generating noise. By setting a deflector ring, the airflow flowing into the housing through the through hole will be disturbed, changing the flow field distribution in the area where the through hole is located. That is, the airflow flows along the through hole to the deflector ring, passes through the inner circumference of the deflector ring, flows through the end face of the deflector ring, and then diffuses into the entire housing. The airflow velocity in different directions inside the housing is reduced, thereby reducing the wind noise in the area where the through hole is located. In addition, the structure of the rearview mirror housing is simple and the cost is low.
[0024] (2) By inserting the camera into the positioning groove of the support leg, with the support leg abutting against the end of the camera facing the housing and the outer peripheral surface of the camera, the camera and housing can be pre-positioned, facilitating the connection and fixation between the camera and the housing. By setting a spoiler ring between the support leg and the through hole, the spoiler ring is closer to the through hole than the support leg, allowing it to contact the airflow entering the vehicle's exterior rearview mirror more quickly, thus more effectively turbulenting the airflow entering the through hole and significantly reducing wind noise.
[0025] (3) While ensuring that the turbulence ring achieves its turbulence-disrupting effect, it can avoid interference between the turbulence ring and the camera, thus affecting the assembly between the support leg and the camera and improving the effectiveness of camera installation.
[0026] (4) There is no contact between the spoiler ring and the camera. The airflow entering through the through hole can be diffused into the rearview mirror through the gap between the spoiler ring and the camera, avoiding the accumulation of gas near the through hole and the generation of noise. In addition, the distance between the spoiler ring and the camera in the axial direction of the spoiler ring is small, which can ensure that the spoiler ring is high enough to ensure the turbulence effect on the airflow entering through the through hole, so as to effectively reduce wind noise.
[0027] (5) The inner circumferential surface of the spoiler ring can guide the airflow entering through the through hole. The airflow entering through the through hole gradually increases the diffusion area along the inner circumferential surface of the spoiler ring and then diffuses into the entire exterior rearview mirror, avoiding the concentration of airflow entering through the through hole and thus reducing wind noise.
[0028] (6) The connection strength between the housing and the spoiler ring is high, which improves the overall structural strength of the vehicle exterior rearview mirror, reduces the probability of damage to the vehicle exterior rearview mirror, and the housing and spoiler ring can be processed and produced simultaneously, resulting in higher production efficiency.
[0029] (7) The groove accommodates the spoiler ring, which can reduce the internal space occupied by the spoiler ring in the housing and help improve the space utilization of the vehicle's exterior rearview mirror.
[0030] (8) It can further improve the turbulence capability of the turbulence ring, which is beneficial to reducing wind noise.
[0031] (9) The airflow through the through hole flows sequentially along the inner circumferential surface of the first ring, the end face of the first ring, the inner circumferential surface of the second ring, and the end face of the second ring, and finally diffuses into the shell. The airflow path is more tortuous, which can further improve the turbulence effect and reduce wind noise. Attached Figure Description
[0032] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0033] Figure 1 This is one of the structural schematic diagrams of the vehicle exterior rearview mirror in the embodiments of this utility model.
[0034] Figure 2 This is one of the partial cross-sectional views of the vehicle exterior rearview mirror in the embodiments of this utility model.
[0035] Figure 3 This is a second partial cross-sectional view of the vehicle exterior rearview mirror in this utility model embodiment.
[0036] Figure 4 This is the third partial cross-sectional view of the vehicle exterior rearview mirror in this utility model embodiment.
[0037] Figure 5 This is the fourth partial cross-sectional view of the vehicle exterior rearview mirror in this utility model embodiment.
[0038] Figure 6 This is a schematic diagram of the shell structure in an embodiment of this utility model.
[0039] Figure 7 This is a partial view of the shell in an embodiment of this utility model.
[0040] Figure 8 This is a cross-sectional view of the shell in an embodiment of this utility model.
[0041] Explanation of reference numerals in the attached figures: 1. Exterior rearview mirrors; 100. Housing; 101. Through hole; 102. Lens mounting port; 103. Inner surface; 104. Groove; 105. Positioning post; 106. Protrusion; 200, spoiler ring; 210, spoiler groove; 220, spoiler rib; 230, first ring section; 240, second ring section; 250, air guide step; 300. Camera; 400, Support leg; 410, Positioning groove. Detailed Implementation
[0042] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0043] The embodiments of this utility model will be described below with reference to the accompanying drawings and preferred embodiments. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model. It should be understood that the preferred embodiments are only for illustrating this utility model and not for limiting the scope of protection of this utility model.
[0044] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. Therefore, the drawings only show the components related to the present invention and are not drawn according to the number, shape and size of the components in actual implementation. In actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.
[0045] The following is combined Figures 1 to 8 The following describes embodiments of the present invention.
[0046] This utility model embodiment proposes a vehicle exterior rearview mirror 1, which includes a housing 100, a spoiler ring 200, and a camera 300.
[0047] The housing 100 has a through hole 101. The rearview mirror is disposed on the housing 100, and the side of the housing 100 facing the rearview mirror is the inner surface. The housing 100 may have a mirror mounting port 102, and the rearview mirror covers the mirror mounting port 102. A spoiler ring 200 is connected to the inner surface 103 and surrounds the through hole 101. A camera 300 is disposed between the housing 100 and the rearview mirror, and the camera 300 passes through the spoiler ring 200 and the through hole 101.
[0048] The cross-section of the spoiler ring 200 can be constructed into a slightly curved, triangular, or trapezoidal shape. The rearview mirror can reflect the scene behind the vehicle, and the camera 300, through the through-hole 101, can at least capture the scene in front of the vehicle. On the one hand, it serves as a driving recorder; on the other hand, when the vehicle is reversing, the front wheels are a blind spot, and the camera 300 can capture the area near the front wheels, improving reversing safety.
[0049] By inserting the camera 300 through the through hole 101, the housing 100 can be prevented from obstructing the camera 300, which facilitates expanding the camera's field of view and improves driver safety. During installation, due to the assembly requirements of the camera 300, the camera 300 and the through hole 101 are fitted with a clearance. The inner wall of the camera 300 and the through hole 101 form an air duct. When the vehicle moves forward, outside air will flow into the rearview mirror 1 through the air duct, which will generate noise.
[0050] By setting the baffle ring 200, the airflow flowing into the housing 100 through the through hole 101 is disturbed, changing the flow field distribution in the area where the through hole 101 is located. That is, the airflow flows along the through hole 101 to the baffle ring 200, passes through the inner circumferential surface of the baffle ring 200, flows through the end face of the baffle ring 200, and then diffuses into the entire housing 100. The airflow velocity in different directions within the housing 100 is reduced, thereby reducing the wind noise in the area where the through hole 101 is located. Furthermore, the rearview mirror housing 100 has a simple structure and low cost.
[0051] In some embodiments, such as Figures 2-5 as well as Figure 7 As shown, the exterior rearview mirror 1 also includes multiple support legs 400. The support legs 400 are connected to the inner surface 103. The multiple support legs 400 are arranged at intervals along the circumference of the spoiler ring 200. The spoiler ring 200 is located between the support legs 400 and the through hole 101. The top of the support leg 400 is provided with a positioning groove 410. The top of the support leg 400 is the end of the support leg 400 away from the inner surface 103. The camera 300 is fixed in the positioning groove 410.
[0052] The support leg 400 and the housing 100 can be integrally formed, increasing the connection strength between them and improving the reliability of the relative position between the camera 300 and the housing 100. Additionally, the positioning groove 410 extends through the side of the support leg 400 facing the through hole 101, facilitating the insertion of the camera 300 into the positioning groove 410.
[0053] By inserting the camera 300 into the positioning groove 410 of the support leg 400, with the support leg 400 abutting against the end of the camera 300 facing the housing 100 and the outer peripheral surface of the camera 300, the camera 300 and the housing 100 can be pre-positioned, facilitating the connection and fixation between the camera 300 and the housing 100. The inner surface 103 may be provided with a positioning post 105. The vehicle exterior rearview mirror 1 also includes a positioning component, which passes through the camera 300 and is installed on the positioning post 105. The positioning component and the positioning post 105 can be threaded together. The positioning component can be a bolt or a screw, and the positioning post 105 may be provided with a threaded hole.
[0054] By positioning the spoiler ring 200 between the support leg 400 and the through hole 101, the spoiler ring 200 is closer to the through hole 101 than the support leg 400. The spoiler ring 200 can contact the airflow entering the exterior rearview mirror 1 through the through hole 101 more quickly, so as to more effectively turbulent the airflow entering through the through hole 101 and significantly reduce wind noise.
[0055] Furthermore, such as Figures 2-5As shown, the top of the support leg 400 extends beyond the top of the spoiler ring 200, where the top of the spoiler ring 200 is the end of the spoiler ring 200 furthest from the inner surface 103. This ensures that the spoiler ring 200 achieves its spoilering function while preventing interference between the spoiler ring 200 and the camera 300, thus improving the effectiveness of the camera 300's installation.
[0056] Specifically, along the axial direction of the spoiler ring 200, the distance between the spoiler ring 200 and the camera 300 is Q, satisfying 0mm < Q ≤ 1mm. Here, Q can be 0.1mm, 0.2mm, 0.3mm, 0.4mm, 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm, or 1mm. In other words, there is no contact between the spoiler ring 200 and the camera 300. The airflow entering through the through-hole 101 can diffuse into the exterior rearview mirror 1 through the gap between the spoiler ring 200 and the camera 300, preventing gas from accumulating near the through-hole 101 and causing noise.
[0057] In addition, Q is no greater than 1mm, and the distance between the spoiler ring 200 and the camera 300 in the axial direction of the spoiler ring 200 is small, which can ensure that the spoiler ring 200 is high enough to ensure the spoiler effect on the airflow entering through the through hole 101, so as to effectively reduce wind noise.
[0058] In some embodiments, such as Figures 2-5 As shown, the inner circumferential surface of the deflector ring 200 is inclined relative to the axis of the through hole 101, and the inner circumferential surface of the deflector ring 200 gradually moves away from the through hole 101 from its bottom to its top. The bottom of the deflector ring 200 is the end of the deflector ring 200 that connects to the inner surface 103, and the inner circumferential surface of the deflector ring 200 is the side of the deflector ring 200 facing the through hole 101.
[0059] In this way, the inner circumferential surface of the spoiler ring 200 can guide the airflow entering through the through hole 101. The airflow entering through the through hole 101 gradually increases the diffusion area along the inner circumferential surface of the spoiler ring 200, and then diffuses into the entire exterior rearview mirror 1, avoiding the concentration of airflow entering through the through hole 101, thereby reducing wind noise.
[0060] In some embodiments, the housing 100 and the spoiler ring 200 are integrally formed. This results in a strong connection between the housing 100 and the spoiler ring 200, improving the overall structural strength of the exterior rearview mirror 1, reducing the probability of damage to the exterior rearview mirror 1, and allowing the housing 100 and the spoiler ring 200 to be manufactured simultaneously, resulting in higher production efficiency.
[0061] In some embodiments, such as Figures 6-8As shown, the inner surface 103 has a groove 104, and the spoiler ring 200 is located within the groove 104. The side of the housing 100 facing away from the rearview mirror has a protrusion 106, which corresponds to the groove 104, ensuring that the housing 100 is thick enough to prevent damage at the groove 104. The support leg 400 can also be located within the groove 104.
[0062] By setting the groove 104, the space occupied by the spoiler ring 200 in the housing 100 can be reduced, which is beneficial to improving the space utilization of the vehicle exterior rearview mirror 1.
[0063] In some embodiments, such as Figure 3 As shown, the inner circumferential surface of the spoiler ring 200 is provided with spoiler grooves 210, which extend along the axial and / or circumferential directions of the spoiler ring 200. There can be multiple spoiler grooves 210. These grooves can extend along the axial direction of the spoiler ring 200, and are spaced apart circumferentially. Alternatively, they can extend along the circumferential direction of the spoiler ring 200, and are spaced apart axially. They can also extend in both the axial and circumferential directions, and are spaced apart both axially and circumferentially. The spoiler grooves 210 are constructed in a spiral shape.
[0064] By setting the turbulence groove 210, the turbulence capability of the turbulence ring 200 can be further improved, which helps to reduce wind noise.
[0065] In some embodiments, such as Figure 4 As shown, the inner circumferential surface of the turbulence ring 200 is provided with turbulence ribs 220, which extend along the axial and / or circumferential directions of the turbulence ring 200. There can be multiple turbulence ribs 220. These ribs can extend along the axial direction of the turbulence ring 200, and multiple turbulence ribs 220 can be spaced apart circumferentially. Alternatively, they can extend along the circumferential direction of the turbulence ring 200, and multiple turbulence ribs 220 can be spaced apart axially. They can also extend in both the axial and circumferential directions of the turbulence ring 200, and multiple turbulence ribs 220 can be spaced apart both axially and circumferentially. The turbulence ribs 220 are spirally shaped.
[0066] By setting the deflector rib 220, the deflection capability of the deflector ring 200 can be further improved, which helps to reduce wind noise.
[0067] It should be noted that the inner circumferential surface of the deflection ring 200 can be provided with deflection ribs 220 and deflection grooves 210, and the deflection ribs 220 and deflection grooves 210 are provided at intervals.
[0068] In some embodiments, such as Figure 5As shown, the turbulence ring 200 includes a first ring portion 230 and a second ring portion 240. The first ring portion 230 is connected to the inner surface 103. The second ring portion 240 is connected to both the inner surface 103 and the outer peripheral surface of the first ring portion 230. The top of the second ring portion 240 extends beyond the top of the first ring portion 230 to form an air guide step 250. The outer peripheral surface of the first ring portion 230 is the side of the first ring portion 230 facing away from the through hole 101, and the top of the first ring portion 230 is the end of the second ring portion 240 away from the inner surface 103.
[0069] The cross-section of the first ring portion 230 can be constructed as a triangle, a minor arc, or a trapezoid, and the cross-section of the second ring portion 240 can be constructed as a trapezoid. The air guide step 250 is formed by the inner peripheral surface of the first ring portion 230, the top end of the first ring portion 230, the inner peripheral surface of the second ring portion 240, and the top end of the second ring portion 240.
[0070] The airflow through the through hole 101 flows sequentially along the inner circumferential surface of the first ring portion 230, the end face of the first ring portion 230, the inner circumferential surface of the second ring portion 240, and the end face of the second ring portion 240, and finally diffuses into the housing 100. The airflow path is more tortuous, which can further improve the turbulence effect and thus reduce wind noise.
[0071] The turbulence ring 200 may have more rings to form multiple stepped structures on the turbulence ring 200, thereby further improving the turbulence effect.
[0072] The above embodiments are merely preferred embodiments provided to fully illustrate the present utility model, and the protection scope of the present utility model is not limited thereto. Equivalent substitutions or modifications made by those skilled in the art based on the present utility model are all within the protection scope of the present utility model.
[0073] Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope defined by the appended claims.
Claims
1. A vehicle exterior rearview mirror, characterized in that, include: The housing (100) has a through hole (101). A rearview mirror body is disposed in the housing (100), and the side of the housing (100) facing the rearview mirror body is the inner surface; A flow-deflecting ring (200) is connected to the inner surface (103), and the flow-deflecting ring (200) is arranged around the through hole (101); A camera (300) is disposed between the housing (100) and the rearview mirror body, and the camera (300) passes through the spoiler ring (200) and the through hole (101).
2. The vehicle exterior rearview mirror according to claim 1, characterized in that, The vehicle exterior rearview mirror also includes: Multiple support legs (400) are connected to the inner surface (103). The multiple support legs (400) are arranged circumferentially at intervals along the turbulence ring (200). The turbulence ring (200) is located between the support legs (400) and the through hole (101). The top of the support leg (400) is provided with a positioning groove (410), and the camera (300) is engaged in the positioning groove (410).
3. The vehicle exterior rearview mirror according to claim 2, characterized in that, The top of the support leg (400) extends beyond the top of the spoiler ring (200).
4. The vehicle exterior rearview mirror according to claim 2, characterized in that, In the axial direction of the spoiler ring (200), the distance between the spoiler ring (200) and the camera (300) is Q, which satisfies 0mm < Q ≤ 1mm.
5. The vehicle exterior rearview mirror according to any one of claims 1-4, characterized in that, The inner circumferential surface of the turbulence ring (200) is inclined relative to the axis of the through hole (101), and the inner circumferential surface of the turbulence ring (200) gradually moves away from the through hole (101) from its bottom to its top.
6. The vehicle exterior rearview mirror according to any one of claims 1-4, characterized in that, The housing (100) and the turbulence ring (200) are integrally formed.
7. The vehicle exterior rearview mirror according to any one of claims 1-4, characterized in that, The inner surface (103) is provided with a groove (104), and the turbulence ring (200) is located in the groove (104).
8. The vehicle exterior rearview mirror according to any one of claims 1-4, characterized in that, The inner circumferential surface of the turbulence ring (200) is provided with a turbulence groove (210), which extends along the axial and / or circumferential direction of the turbulence ring (200). And / or, the inner circumferential surface of the turbulence ring (200) is provided with turbulence ribs (220), which extend along the axial and / or circumferential direction of the turbulence ring (200).
9. The vehicle exterior rearview mirror according to any one of claims 1-4, characterized in that, The turbulence ring (200) includes: The first ring portion (230) is connected to the inner surface (103); The second ring (240) is connected to the inner surface (103) and the outer peripheral surface of the first ring (230), and the top of the second ring (240) extends beyond the top of the first ring (230) to form an air guide step (250).
10. A vehicle, characterized in that, The rearview mirror as described in any one of claims 1-9.