An exterior rearview mirror front edge structure, a rearview mirror assembly, and a vehicle

Abstract

This application relates to the field of automotive parts technology, providing an exterior rearview mirror leading edge structure, a rearview mirror assembly, and a vehicle. The exterior rearview mirror leading edge structure includes a pistol-shaped rearview mirror housing. The rearview mirror housing includes a mirror body end near the vehicle body and a mirror body end away from the vehicle body. The rearview mirror housing is arranged facing forward of the vehicle, and the leading edge portion of the rearview mirror housing facing the vehicle's driving direction is provided with a near-fin-like serrated wind-breaking structure. The near-fin-like serrated wind-breaking structure extends gradually from the outer end of the leading edge of the mirror body end to the inner end of the leading edge of the mirror body end along the length direction of the leading edge of the rearview mirror housing. The surfaces of the leading edges of the mirror body end and the mirror body end facing the vehicle's driving direction are generally continuous inclined surfaces, and these inclined surfaces gradually slope outward from the leading edge of the mirror body end towards the outer side of the vehicle body. This utility model can reduce wind resistance and wind noise during driving, thus improving the overall NVH performance of the vehicle.

Description

Technical Field

[0001] This application relates to the field of automotive parts technology, and in particular to an exterior rearview mirror leading edge structure, a rearview mirror assembly, and a vehicle. Background Technology

[0002] With the development of electrification in commercial vehicles, pure electric vehicles are increasingly used, and as a new type of exterior accessory, the aerodynamic performance control of electronic rearview mirrors is becoming increasingly important. The aerodynamics of existing electronic rearview mirrors presents significant challenges, mainly involving the following aspects:

[0003] 1. Wind resistance problem: Traditional electronic rearview mirrors mostly adopt a simple streamlined design, but they still generate turbulence when driving at high speeds, increasing the wind resistance of the entire vehicle (accounting for about 3%-5% of commercial vehicles).

[0004] 2. Wind noise impact: Airflow separation leads to high-frequency wind noise, affecting driving comfort, especially in long-distance commercial vehicle transportation;

[0005] This indicates that existing electronic rearview mirror solutions have insufficient wind resistance optimization. For example, local turbulence still exists at high speeds, and wind noise suppression is incomplete. Although some existing solutions can reduce low-frequency noise, the high-frequency howling problem has not been completely solved.

[0006] Based on the above, this application urgently needs an exterior rearview mirror leading edge structure, a rearview mirror assembly, and a vehicle to solve at least one of the aforementioned technical problems. Utility Model Content

[0007] The purpose of this invention is to provide a leading edge structure for an exterior rearview mirror, a rearview mirror assembly, and a vehicle, which can reduce wind resistance and wind noise during driving, thereby improving the overall NVH performance of the vehicle. The specific solution is as follows:

[0008] A leading edge structure for an exterior rearview mirror, comprising:

[0009] A pistol-shaped rearview mirror housing; wherein the rearview mirror housing includes a mirror body end near the vehicle body and a rearview mirror body end away from the vehicle body;

[0010] The rearview mirror housing has a fin-like serrated wind-breaking structure at the leading edge of the vehicle's driving direction.

[0011] The fin-like serrated wind-breaking structure is distributed along the length of the front edge of the rearview mirror housing, and the outer end of the front edge of the rearview mirror body gradually extends to the inner end of the front edge of the mirror body.

[0012] Preferably, the surface of the front edge of the mirror body end and the rearview mirror body end facing the vehicle's driving direction is a continuous inclined surface structure, and the inclined surface gradually slopes outward from the front edge of the mirror body end towards the front edge of the rearview mirror body end.

[0013] Preferably, the approximate fin-like serrated wind-breaking structure specifically includes: a plurality of wind-breaking teeth arranged in a continuous manner;

[0014] Several air-breaking teeth are arranged at equal intervals along the length of the inclined surface of the front edge of the rearview mirror housing; among them, the air-breaking tooth located on the outer side of the front edge of the rearview mirror body is designed as the first air-breaking tooth; the tooth height of the first air-breaking tooth is smaller than the tooth height of the other air-breaking teeth, the tooth width is larger than the tooth width of the other air-breaking teeth, and the tooth valley of the first air-breaking tooth near the outer side of the rearview mirror body forms a continuous smooth curve with the outer edge of the rearview mirror body.

[0015] Preferably, the overall shape of the side profile of each air-breaking tooth is an inverted V-shape, and the overall shape of the front profile is an arch.

[0016] Preferably, each air-breaking tooth has an inwardly inclined guide surface extending along the side profile on both sides; the guide surface can smoothly guide the airflow passing over the top of the air-breaking tooth to the outer peripheral area of ​​the air-breaking tooth.

[0017] Preferably, the angle between the guide slope and the side of the corresponding air-breaking tooth is 5°-15°, and the radial width of each guide slope is 5mm-10mm.

[0018] An exterior rearview mirror assembly, characterized in that it includes the aforementioned exterior rearview mirror leading edge structure.

[0019] A vehicle including the aforementioned exterior rearview mirror assembly.

[0020] The above solution achieves the following beneficial technical effects:

[0021] This application provides an exterior rearview mirror leading edge structure, a rearview mirror assembly, and a vehicle. Through optimized design of the rearview mirror housing, the problem of turbulence concentration caused by local airflow separation in traditional smooth leading edges is avoided. At the same time, the continuous distribution of the near-fin-like sawtooth wind-breaking structure from the outer end to the inner end allows the airflow to gradually adjust its direction as it flows through the concave and convex shape of the sawtooth, thereby reducing the pressure difference and vortex intensity at the leading edge, and reducing wind resistance and wind noise overall. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of the leading edge of the exterior rearview mirror.

[0023] Figure 2 This is a schematic diagram of the outer structure of the leading edge of the exterior rearview mirror.

[0024] Figure 3 This is a schematic diagram of the inner structure of the leading edge of the exterior rearview mirror.

[0025] Figure 4This is a three-dimensional view of the leading edge structure of the exterior rearview mirror.

[0026] In the picture:

[0027] 1. Rearview mirror housing;

[0028] 2. End of the mirror body;

[0029] 3. Rearview mirror end;

[0030] 4. Similar to fin-like serrated wind-breaking structure; 41. Wind-breaking tooth; 42. First wind-breaking tooth; 43. Wind-guiding inclined surface. Detailed Implementation

[0031] To make the purpose, technical solution, and advantages of this application clearer, the following will be described in conjunction with the appendix. Figures 1-4 This application will be described in further detail. It is obvious that the described embodiments are merely some, not all, of the embodiments described herein. All other embodiments obtained by those skilled in the art based on the embodiments described herein without inventive effort are within the scope of protection of this application.

[0032] The terminology used in the embodiments of this application is for the purpose of describing particular embodiments only and is not intended to limit the application. The singular forms “a,” “said,” and “the” used in the embodiments of this application and the appended claims are also intended to include the plural forms, and “multiple” generally includes at least two unless the context clearly indicates otherwise.

[0033] It should be understood that the term "and / or" used in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0034] It should be understood that although the terms first, second, third, etc., may be used in the embodiments of this application, these descriptions should not be limited to these terms. These terms are only used to distinguish the descriptions. For example, first may also be referred to as second without departing from the scope of the embodiments of this application, and similarly, second may also be referred to as first.

[0035] Depending on the context, the words “if” or “suppose” as used here can be interpreted as “when” or “in response to determination” or “in response to detection.” Similarly, depending on the context, the phrases “if determination” or “if detection (of the stated condition or event)” can be interpreted as “when determination” or “in response to determination” or “when detection (of the stated condition or event)” or “in response to detection (of the stated condition or event).”

[0036] The optional embodiments of this application are described in detail below with reference to the accompanying drawings. Furthermore, the exterior rearview mirror provided in this application is an electronic rearview mirror.

[0037] Figure 1 The exterior rearview mirror front edge structure shown includes: a pistol-shaped rearview mirror housing 1; wherein, the rearview mirror housing 1 includes a mirror body end 2 close to the vehicle body and a rearview mirror body end 3 away from the vehicle body;

[0038] The rearview mirror housing 1 has a fin-like serrated wind-breaking structure 4 at the front edge facing the vehicle's direction of travel.

[0039] The near-fin-like serrated wind-breaking structure 4 extends along the length of the front edge of the rearview mirror housing 1, gradually extending from the outer end of the front edge of the rearview mirror body end 3 to the inner end of the front edge of the mirror body end 2.

[0040] The mirror body end 2 and the rearview mirror body end 3 are integrally connected to form the rearview mirror housing 1.

[0041] It should be noted that the inner end of the mirror body 2 of this application is connected to the vehicle body, and the outer end is connected to the rearview mirror body 3; and the width of the rearview mirror body 3 is the same as the width of the mirror body 2 and is smaller than the rear end width of the rearview mirror body 3.

[0042] Specifically, this application utilizes a near-fin-like serrated wind-breaking structure 4 that extends along the length of the front edge of the rearview mirror housing 1, gradually extending from the outer end of the front edge of the rearview mirror body end 3 to the inner end of the front edge of the mirror body end 2. This completely covers the entire front edge area of ​​the rearview mirror housing 1 that is most susceptible to airflow impact, avoiding the turbulence concentration problem caused by local airflow separation in traditional smooth front edges. Moreover, due to the continuous distribution of the near-fin-like serrated wind-breaking structure 4, i.e. from the outer end to the inner end, the airflow can gradually adjust its direction through the concave and convex shape of the serrations when flowing through the front edge, thereby reducing the pressure difference and vortex intensity at the front edge, and reducing wind resistance and wind noise overall.

[0043] Furthermore, the overall structure of the rearview mirror housing 1 of this application is a narrow front and wide rear structure, which makes the rearview mirror housing 1 have a better airflow guiding effect, can guide the airflow smoothly around the housing, and, together with the fin-like sawtooth wind-breaking structure 4, achieves simultaneous optimization of wind resistance and wind noise, and improves the overall NVH performance of the vehicle.

[0044] Furthermore, the axial length of the mirror body end 2 is L; the axial length of the rearview mirror body end 3 is N; wherein 2 / 3 L < N < L. The advantage of this design is that the length design of the rearview mirror body end 3 ensures the stability of its connection with the vehicle body as a whole, and the length design of the rearview mirror body end 3 ensures sufficient internal space to accommodate functional components while avoiding structural redundancy due to excessive length.

[0045] Furthermore, the surfaces of the front edges of the mirror body end 2 and the rearview mirror body end 3 facing the vehicle's driving direction are generally continuous inclined surfaces, and these inclined surfaces gradually slope towards the rear of the vehicle body from the front edge of the mirror body end 2 to the front edge of the rearview mirror body end 3.

[0046] Specifically, the surfaces of the leading edges of the mirror body end 2 and the rearview mirror body end 3 of this application are designed with a slope, and the slope gradually extends from the side of the vehicle body to the rear of the vehicle body, so that the airflow can smoothly transition along the slope, reducing the turbulence caused by the sudden separation of airflow, thereby reducing wind resistance. At the same time, through the design of the slope, the airflow broken by the fin-like sawtooth wind-breaking structure 4 is guided to flow along a preset path, avoiding the accumulation of airflow on the outside of the rearview mirror body end 3, thereby further reducing wind noise.

[0047] Furthermore, the approximate fin-like serrated wind-breaking structure 4 specifically includes: a plurality of wind-breaking teeth 41 arranged in succession;

[0048] Several wind-breaking teeth 41 are arranged at equal intervals along the length of the inclined surface of the front edge of the rearview mirror housing 1 (the center distance between adjacent wind-breaking teeth 41 is equal); among them, the wind-breaking tooth 41 located on the outer side of the front edge of the rearview mirror body end 3 is designed as the first wind-breaking tooth 42, and the tooth height of the first wind-breaking tooth 42 is smaller than the tooth height of the other wind-breaking teeth 41, and the tooth width is larger than the tooth width of the other wind-breaking teeth 41. The first wind-breaking tooth 42 is close to the tooth valley on the outer side of the rearview mirror body end 3, forming a continuous smooth curve with the outer edge of the rearview mirror body end 3.

[0049] Specifically, several air-breaking teeth are equidistantly arranged along the inclined surface of the front edge of the rearview mirror housing 1, which can uniformly divide the oncoming airflow into multiple small-scale airflow units when it flows through the front edge, reducing the wind resistance and wind noise generated by the concentration of turbulence in a specific area, and making the airflow breaking effect more stable and controllable. Furthermore, the structural design of the first air-breaking tooth 42 on the outer side of the front edge of the rearview mirror housing 3 is intended to increase the cutting ability of the oncoming airflow. Through the continuous edge line formed by the tooth valley on the side of the first air-breaking tooth 42 near the outer side of the rearview mirror housing 3 and the outer edge of the rearview mirror housing 3, the airflow can smoothly transition along the continuous edge line when it flows through the outer edge of the rearview mirror housing 3, thereby optimizing the adhesion and flow of the airflow and helping to reduce wind resistance and wind noise.

[0050] Furthermore, the overall shape of the side profile of each air-breaking tooth is an inverted V-shape, and the overall shape of the front profile is an arch shape; each air-breaking tooth has an inwardly extending guide slope 43 along the side profile line on both sides; the guide slope 43 can smoothly guide the airflow flowing through the top of the air-breaking tooth to the outer peripheral area of ​​the air-breaking tooth.

[0051] Specifically, by designing the front profile of each air-breaking tooth as an arched structure, the purpose is to smoothly divert the airflow impacting the air-breaking tooth from the top to both sides along the arc surface, reducing the impact pressure of the airflow on the top of the air-breaking tooth. At the same time, by setting the air-guiding slope 43 on the side of the air-breaking tooth, the airflow is prevented from forming a blockage at the root of the tooth body, and the airflow is guided to flow to the outer periphery of the air-breaking tooth, reducing the airflow swirl in the inter-tooth area and reducing the wind resistance caused by local turbulence.

[0052] In this embodiment, the included angle between the wind guide slope 43 and the side of the corresponding wind-breaking tooth is 5°-15°, and the radial width of each wind guide slope 43 is 5mm-10mm.

[0053] It is understandable that if the angle between the guide slope 43 and the side of the air-breaking tooth is too small, the guiding effect will not be obvious. If the angle between the guide slope 43 and the side of the air-breaking tooth is too large, the airflow will form a new vortex at the root of the slope, increasing the local wind resistance. This application makes the transition of the airflow along the slope smoother through a reasonable angle design, taking into account both the guiding effect and low resistance characteristics.

[0054] Furthermore, the width of the guide slope 43 is reasonably designed, which can provide sufficient guiding surface for the airflow passing through the top, ensure that there is a reasonable gap between the slopes of adjacent air-breaking teeth to avoid mutual interference, and ensure that the guiding effect of each air-breaking tooth is independent and stable.

[0055] Secondly, this application provides an exterior rearview mirror assembly, including the aforementioned exterior rearview mirror leading edge structure.

[0056] Thirdly, this application provides a vehicle including the aforementioned exterior rearview mirror assembly.

[0057] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A leading edge structure for an exterior rearview mirror, characterized in that, include: A pistol-shaped rearview mirror housing (1); wherein the rearview mirror housing (1) includes a mirror body end (2) close to the vehicle body and a rearview mirror body end (3) away from the vehicle body. The rearview mirror housing (1) has a fin-like serrated wind-breaking structure (4) at the front edge facing the vehicle's driving direction. The near-fin-like serrated wind-breaking structure (4) is distributed along the length of the front edge of the rearview mirror housing (1), and the outer front edge of the rearview mirror body end (3) gradually extends to the inner front edge of the mirror body end (2).

2. The leading edge structure of the exterior rearview mirror according to claim 1, characterized in that, The surfaces of the front edges of the mirror body end (2) and the rearview mirror body end (3) facing the direction of vehicle travel are generally continuous inclined surfaces, and the inclined surfaces are inclined from the mirror body end (2) to the rearview mirror body end (3).

3. The leading edge structure of the exterior rearview mirror according to claim 2, characterized in that, The approximate fin-like serrated wind-breaking structure (4) specifically includes: a number of wind-breaking teeth (41) arranged in succession. Several wind-breaking teeth (41) are arranged at equal intervals along the length of the inclined surface of the front edge of the rearview mirror housing (1); among them, the wind-breaking tooth (41) located on the outer side of the front edge of the rearview mirror body end (3) is designed as the first wind-breaking tooth (42); the tooth height of the first wind-breaking tooth (42) is smaller than the tooth height of the other wind-breaking teeth (41), the tooth width is larger than the tooth width of the other wind-breaking teeth (41), and the tooth valley of the first wind-breaking tooth (42) near the outer side of the rearview mirror body end (3) forms a continuous smooth curve with the outer edge of the rearview mirror body end (3).

4. The leading edge structure of the exterior rearview mirror according to claim 3, characterized in that, The side profile of each wind-breaking tooth (41) is an inverted V-shaped structure, and the front profile is an arched structure.

5. The leading edge structure of the exterior rearview mirror according to claim 4 or 3, characterized in that, Each air-breaking tooth (41) has an inwardly inclined guide surface (43) extending along the side profile on both sides; the guide surface (43) can smoothly guide the airflow flowing through the top of the air-breaking tooth (41) to the outer peripheral area of ​​the air-breaking tooth (41).

6. The leading edge structure of the exterior rearview mirror according to claim 5, characterized in that, The angle between the wind guide slope (43) and the side of the corresponding wind-breaking tooth (41) is 5°-15°, and the radial width of each wind guide slope (43) is 5mm-10mm.

7. An exterior rearview mirror assembly, characterized in that, Includes the leading edge structure of the exterior rearview mirror as described in any one of claims 1-6.

8. A vehicle, characterized in that, Includes the exterior rearview mirror assembly as described in claim 7.

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