Outside rear-view mirror drainage structure, outside rear-view mirror and vehicle

Abstract

The utility model provides an exterior rear-view mirror drainage structure, exterior rear-view mirror and vehicle, including base, mirror shell and mirror ring, base is connected to the vehicle door, mirror shell is connected to base top, mirror ring is connected to the rear side of mirror shell, the bottom of mirror shell is equipped with first drain hole, the base is equipped with second drain hole, the mirror shell is equipped with second drain hole. The second drain hole is located in the side wall of the base close to the door. According to the drainage structure of the outside rear-view mirror, the first drainage hole is formed in the bottom of the mirror shell to drain water in the mirror shell in order, normal use of components in the mirror shell is guaranteed, the second drainage hole is formed in the base to drain water in the base in order, influences of accumulated water on circuits in the base are avoided, and the service life of the outside rear-view mirror is prolonged. The drainage smoothness of the outside rear-view mirror is guaranteed, potential safety hazards caused by water accumulation of the rear-view mirror are avoided, and the safety of vehicle use is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of rearview mirror drainage structures, and more specifically, relates to an exterior rearview mirror drainage structure, an exterior rearview mirror and a vehicle. Background Art

[0002] The exterior rearview mirrors of existing vehicles are prone to water accumulation after being exposed to rain or washing, which not only affects the normal use of passengers, but also poses certain safety hazards. Rearview mirrors generally have two opening states, one is the normal opening state during vehicle driving, and the other is the folding state after the vehicle is parked. Under the above conditions, the rearview mirrors of existing vehicles are affected by rain or washing, and water often accumulates in the rearview mirrors, which has a serious impact on the folding motors and other electrical components and other circuits inside the rearview mirrors, which can easily affect the normal use performance of the rearview mirrors and pose certain safety hazards. Utility Model Content

[0003] The utility model aims to provide an exterior rearview mirror drainage structure, an exterior rearview mirror and a vehicle, which can drain the rearview mirror and avoid potential safety hazards caused by water accumulation.

[0004] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: to provide an exterior rearview mirror drainage structure, including a base, a mirror shell and a mirror ring, the base is connected to the vehicle door, the mirror shell is connected to the top of the base, the mirror ring is connected to the rear side of the mirror shell, a first drainage hole is provided at the bottom of the mirror shell, a second drainage hole is provided on the base, and the second drainage hole is located on the side wall of the base close to the vehicle door.

[0005] In a possible implementation, a water guide groove extending toward one side of the center axis of the vehicle body is provided on the inner bottom wall of the mirror housing, the water guide groove is connected to the first drainage hole, and the water guide groove is used to guide the water in the mirror housing to flow to the first drainage hole.

[0006] In a possible implementation, a third drainage hole is further provided on the mirror housing, and a water guiding rib for guiding water into the third drainage hole is provided inside the mirror housing. Two water guiding ribs are provided, and a water guiding channel connected to the third drainage hole is formed between the two water guiding ribs.

[0007] In some embodiments, the mirror housing includes a main mirror housing and a sub-mirror housing connected to the bottom of the main mirror housing, the base is connected to the bottom of the sub-mirror housing, the first drainage hole and the third drainage hole are both arranged at the bottom of the sub-mirror housing, the first drainage hole is located on the side of the sub-mirror housing close to the vehicle door, and the third drainage hole is located on the side of the sub-mirror housing away from the vehicle door.

[0008] In one possible implementation, a connecting portion is provided on one side of the mirror housing adjacent to the vehicle door, the connecting portion extends downwardly in the vehicle body to connect with the base, a fourth drainage hole is provided on the connecting portion, and when the exterior rearview mirror is in a folded state, the fourth drainage hole can swing with the connecting portion to move away from the top surface of the base to drain water in the mirror housing.

[0009] In some embodiments, the mirror housing has a accommodating cavity opening backwards, the mirror ring is installed on the opening side of the accommodating cavity, the mirror ring has an installation cavity arranged backwards to accommodate the lens, and the mirror ring is provided with a fifth drainage hole connected to the accommodating cavity and used to discharge water into the accommodating cavity.

[0010] In some embodiments, a water guiding boss is provided in the installation cavity, and the water guiding boss is arranged at the lower part of the installation cavity. When the exterior rearview mirror is in a folded state, a guiding channel for guiding water into the fifth drainage hole is formed between the water guiding boss and the peripheral wall of the installation cavity.

[0011] In a possible implementation, a sealing gasket is provided between the base and the vehicle door, the sealing gasket is provided with a connecting hole penetrating the second drainage hole, the second drainage hole is located at the lower part of the base, and the connecting hole is located at the lower part of the sealing gasket.

[0012] Compared with the prior art, the solution shown in the embodiment of the present application provides a drainage structure for the exterior rearview mirror, which provides a first drainage hole at the bottom of the mirror shell to drain the water inside the mirror shell in an orderly manner, thereby ensuring the normal use of the internal components of the mirror shell, and provides a second drainage hole on the base to drain the water in the base in an orderly manner, thereby avoiding the influence of accumulated water on the internal circuit of the base, thus ensuring the smooth drainage of the exterior rearview mirror, avoiding the safety hazard caused by water accumulation in the rearview mirror, and improving the safety of vehicle use.

[0013] The utility model also provides an exterior rearview mirror, which includes an exterior rearview mirror drainage structure. The exterior rearview mirror is provided with a first drainage hole at the bottom of the mirror housing to drain water in the mirror housing in an orderly manner, thereby ensuring the normal use of the internal components of the mirror housing, and is provided with a second drainage hole on the base to drain water in the base in an orderly manner, thereby avoiding the influence of accumulated water on the internal circuit of the base, ensuring the smooth drainage of the exterior rearview mirror, avoiding the potential safety hazard caused by accumulated water in the rearview mirror, and improving the safety of vehicle use.

[0014] The utility model also provides a vehicle, the vehicle comprising an exterior rearview mirror. The beneficial effects of the vehicle are the same as those of the exterior rearview mirror, which will not be described in detail. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0016] Figure 1 A schematic diagram of an exploded structure of a drainage structure for an exterior rearview mirror provided in an embodiment of the utility model;

[0017] Figure 2 A schematic diagram of the structure of the drainage structure of the exterior rearview mirror provided in an embodiment of the utility model (mirror ring and sealing gasket are omitted);

[0018] Figure 3 For the utility model embodiment Figure 2 The partially enlarged structural diagram of middle Ⅰ;

[0019] Figure 4 A schematic diagram of the structure of the exterior rearview mirror drainage structure provided by an embodiment of the utility model from another angle (with a lens);

[0020] Figure 5 For the utility model embodiment Figure 1 A schematic diagram of the structure of the center mirror circle from another angle;

[0021] Figure 6 For the utility model embodiment Figure 1 A schematic diagram of the structure of the secondary mirror housing and the connecting part from another angle;

[0022] Figure 7 For the utility model embodiment Figure 1 Schematic diagram of the structure of the middle sealing ring from another angle.

[0023] Among them, the reference numerals in the figure are:

[0024] 1. Base; 11. Second drain hole; 2. Mirror shell; 21. Main mirror shell; 22. Sub-mirror shell; 23. First drain hole; 24. Water guide groove; 25. Third drain hole; 26. Water guide rib; 27. Accommodation cavity; 28. Water guide channel; 29. ​​Camera mounting hole; 3. Mirror ring; 31. Mounting cavity; 32. Fifth drain hole; 33. Water guide boss; 4. Sealing gasket; 41. Connecting hole; 5. Connecting part; 51. Fourth drain hole; 6. Lens. DETAILED DESCRIPTION

[0025] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0026] In the claims, specification and the above-mentioned drawings of the present utility model, the terms "front" and "rear" are the same as the front-to-back direction of the vehicle body, "left" and "right" are the same as the left-to-right direction of the vehicle body, and "up" and "down" are the same as the up-down direction of the vehicle body; the term "inside" refers to the direction toward the central axis of the vehicle body, and the term "outside" refers to the direction away from the central axis of the vehicle body, wherein the central axis of the vehicle body is parallel to the front-to-back direction of the vehicle body. The remaining directional words, unless otherwise clearly defined, such as the use of the terms "center", "lateral", "longitudinal", "horizontal", "vertical", "top", "bottom", "clockwise", "counterclockwise", "high", "low" and the like to indicate the direction or position relationship are based on the direction and position relationship shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, so they cannot be understood as limiting the specific protection scope of the present utility model.

[0027] Please also read Figures 1 to 7 The exterior rearview mirror drainage structure, the exterior rearview mirror and the vehicle, and the exterior rearview mirror and the vehicle provided by the utility model are now described. The exterior rearview mirror drainage structure comprises a base 1, a mirror housing 2 and a mirror ring 3. The base 1 is connected to the vehicle door, the mirror housing 2 is connected above the base 1, the mirror ring 3 is connected to the rear side of the mirror housing 2, a first drainage hole 23 is provided at the bottom of the mirror housing 2, a second drainage hole 11 is provided on the base 1, and the second drainage hole 11 is located on the side wall of the base 1 close to the vehicle door.

[0028] Compared with the prior art, the exterior rearview mirror drainage structure provided in the present embodiment provides a first drainage hole 23 at the bottom of the mirror shell 2 to drain the water inside the mirror shell 2 in an orderly manner, thereby ensuring the normal use of the internal components of the mirror shell 2; and provides a second drainage hole 11 on the base 1 to drain the water inside the base 1 in an orderly manner, thereby avoiding the influence of accumulated water on the internal circuit of the base 1, thereby ensuring the smoothness of drainage of the exterior rearview mirror, avoiding the safety hazard caused by water accumulation in the rearview mirror, and improving the safety of vehicle use.

[0029] In this embodiment, the first drainage hole 23 is arranged at the bottom of the mirror housing 2 of the exterior rearview mirror. The setting position of the first drainage hole 23 is located at the lowest point when the exterior rearview mirror is in the open state, ensuring that the water accumulated inside the mirror housing 2 when the exterior rearview mirror is in use can be smoothly discharged through the first drainage hole 23.

[0030] The base 1 is connected to the vehicle door through a connector, and the mirror housing 2, the mirror ring 3 and the lens 6 are assembled and installed on the base 1 as a whole. When the exterior rearview mirror is in the open state, the mirror housing 2 is located outside the base 1 and has a tendency to extend outward and upward. The first drainage hole 23 is arranged on the side of the mirror housing 2 close to the vehicle door. The first drainage hole 23 is located at a lower point in the mirror housing 2, so that the water in the base 1 can be discharged in an orderly manner through the first drainage hole 23. The water in the base 1 is discharged outward through the second drainage hole 11. The second drainage hole 11 is located on the side wall adjacent to the base 1 and the vehicle door, so that the water can flow downward along the outer wall of the vehicle door.

[0031] In a possible implementation, the above-mentioned characteristic mirror housing 2 can be adopted as follows Figure 1 and Figure 2 See the structure shown. Figure 1 and Figure 2 A water guide groove 24 extending toward one side of the center axis of the vehicle body is provided on the inner bottom wall of the mirror housing 2 . The water guide groove 24 is connected to the first drainage hole 23 . The water guide groove 24 is used to guide the water in the mirror housing 2 to flow to the first drainage hole 23 .

[0032] In this embodiment, the water guide groove 24 provided inside the mirror housing 2 extends to connect with the first drainage hole 23, and the inner bottom wall of the mirror housing 2 extends obliquely downward toward the side close to the vehicle door. When the rearview mirror is in the open state, the water guide groove 24 can guide water to the first drainage hole 23 along the vertical direction inside the mirror housing 2, thereby preventing water from accumulating inside the mirror housing 2.

[0033] Specifically, the first drainage hole 23 is arranged near the rear opening side of the mirror housing 2, that is, near the position where the mirror ring 3 is provided. The diameter of the first drainage hole 23 is 3 mm to 6 mm, which can adapt to the trend that the bottom wall of the mirror housing 2 gradually becomes lower from the front to the back, and can also adapt to the trend that it gradually becomes lower from the outer side of the vehicle body to the central axis side, ensuring that water can smoothly flow backward into the water guide groove 24, and then be guided by the water guide groove 24 to the first drainage hole 23 for discharge.

[0034] When the bottom wall of the mirror shell 2 meets the thickness requirement, the water guide groove 24 can be directly opened on the bottom wall of the mirror shell 2. If the thickness of the bottom wall of the mirror shell 2 is relatively small, the bottom wall of the mirror shell 2 can be recessed to form the water guide groove 24, so as to ensure the effect of the water guide groove 24 in guiding the water flow into the first drainage hole 23 and avoid water accumulation affecting the normal use of related components in the mirror shell 2.

[0035] In a possible implementation, the above-mentioned characteristic mirror housing 2 can be adopted as follows Figures 1 to 3 See the structure shown. Figures 1 to 3 A third drainage hole 25 is also provided on the mirror housing 2. A water guiding rib 26 for guiding water into the third drainage hole 25 is provided in the mirror housing 2. Two water guiding ribs 26 are provided. A water guiding channel 28 communicating with the third drainage hole 25 is formed between the two water guiding ribs 26.

[0036] In this embodiment, for the exterior rearview mirror with a camera installed, the mirror housing 2 is provided with a camera installation hole 29, and a third drainage hole 25 needs to be provided near the camera installation hole 29. The camera is provided at a relatively upper position on the side of the mirror housing 2 away from the door, and the third drainage hole 25 is located below the camera and on the side close to the door, so that water around the camera installation hole 29 can be smoothly guided to the outside of the mirror housing 2 through the third drainage hole 25, thereby avoiding water accumulation at the camera position, thereby ensuring the normal use of the camera.

[0037] In some embodiments, the above-mentioned characteristic mirror housing 2 can be adopted as follows Figures 1 to 7 See the structure shown. Figure 2 The mirror housing 2 includes a main mirror housing 21 and a sub-mirror housing 22 connected to the bottom of the main mirror housing 21, the base 1 is connected to the bottom of the sub-mirror housing 22, the first drainage hole 23 and the third drainage hole 25 are both arranged at the bottom of the sub-mirror housing 22, the first drainage hole 23 is located on the side of the sub-mirror housing 22 close to the vehicle door, and the third drainage hole 25 is located on the side of the sub-mirror housing 22 away from the vehicle door.

[0038] In this embodiment, the mirror housing 2 adopts a structure combining a main mirror housing 21 and a sub-mirror housing 22, which is convenient for reducing the difficulty of molding and reducing the manufacturing cost. The first drainage hole 23 and the third drainage hole 25 are respectively arranged near the two sides of the mirror housing 2. The first drainage hole 23 is arranged on the side of the mirror housing 2 close to the vehicle door, corresponding to the lowest point of the bottom wall of the mirror housing 2, and can drain the inside of the mirror housing 2 as a whole, thereby effectively protecting components such as the folding motor. The third drainage hole 25 is arranged on the side of the mirror housing 2 away from the vehicle door, and can smoothly drain the water around the camera mounting hole 29, thereby effectively protecting components such as the camera and avoiding damage to the above components caused by water accumulation.

[0039] In a possible implementation, the above-mentioned characteristic mirror housing 2 can be adopted as follows Figure 2 and Figure 4 See the structure shown. Figure 2 and Figure 4 A connecting portion 5 is provided on one side of the mirror housing 2 adjacent to the vehicle door, and the connecting portion 5 extends downwardly in the vehicle body to connect with the base 1. A fourth drainage hole 51 is provided on the connecting portion 5. When the exterior rearview mirror is in a folded state, the fourth drainage hole 51 can swing with the connecting portion 5 to move away from the top surface of the base 1 to discharge water in the mirror housing 2.

[0040] In this embodiment, the connection part 5 is located at the lower part of the mirror housing 2 near the vehicle door, and is connected to the inside of the mirror housing 2. The connection part 5 can realize the connection between the mirror housing 2 and the base 1. When the exterior rearview mirror is in the open state, the bottom surface of the connection part 5 is attached to the top surface of the base 1. When the exterior rearview mirror is in the folded state, the connection part 5 follows the mirror housing 2 to change position and retracts above the base 1. The area of ​​the bottom surface of the connection part 5 is offset from the top surface of the base 1. The fourth drainage hole 51 is set in the area where the connection part 5 can be offset and exposed when the exterior rearview mirror is folded, and is located at a position where the bottom wall height of the connection part 5 is relatively low at this time, so that the accumulated water is easily discharged from the fourth drainage hole 51, which helps to improve the drainage efficiency of the mirror housing 2 and the connection part 5 in the folded state.

[0041] By providing the fourth drainage hole 51, water in the mirror housing 2 in the folded state can be effectively drained. Combined with the first drainage hole 23, the second drainage hole 11 and other drainage structures, orderly drainage can be achieved in the two different states of the mirror housing 2, namely, opened and folded.

[0042] In some embodiments, the above-mentioned characteristic mirror housing 2 can be adopted as follows Figure 1 and Figure 5 See the structure shown. Figure 1 and Figure 5 The mirror housing 2 has a accommodating cavity 27 opening backwards, the mirror ring 3 is installed on the opening side of the accommodating cavity 27, the mirror ring 3 has an installation cavity 31 arranged backwards to accommodate the lens 6, and the mirror ring 3 is provided with a fifth drainage hole 32 which is connected to the accommodating cavity 27 and is used to discharge water into the accommodating cavity 27.

[0043] In this embodiment, the mirror housing 2 uses the accommodating cavity 27 to install components such as a folding motor and a camera, and the mirror ring 3 is installed on the opening side of the accommodating cavity 27, that is, the rear side of the mirror housing 2. The installation cavity 31 of the mirror housing 2 is opened backward and is used to install the lens 6. For the accumulated water in the installation cavity 31, the mirror ring 3 can be discharged into the accommodating cavity 27 of the mirror housing 2 through the fifth drainage hole 32, and then the accumulated water is discharged through the first drainage hole 23 at the bottom of the accommodating cavity 27 or the fourth drainage hole 51 on the connecting part 5, so as to ensure that no accumulated water is retained between the mirror housing 2 and the lens 6, and to ensure the orderly discharge of the water flow.

[0044] Specifically, the fifth drainage hole 32 is arranged at a position where the bottom wall height of the mirror ring 3 is relatively low. Since the opening shapes of the mirror ring 3 and the mirror shell 2 are similar, the position of the fifth drainage hole 32 should be kept corresponding to the position of the first drainage hole 23 as much as possible, so that water is discharged from the fifth drainage hole 32 of the mirror ring 3 into the mirror shell 2 in sequence, and finally discharged to the outside of the mirror shell 2 through the first drainage hole 23 at the bottom of the mirror shell 2.

[0045] In some embodiments, see Figure 5A water guide boss 33 is provided in the installation cavity 31, and the water guide boss 33 is arranged at the lower part of the installation cavity 31. When the exterior rearview mirror is in a folded state, a guide channel for guiding water into the fifth drainage hole 32 is formed between the water guide boss 33 and the peripheral wall of the installation cavity 31.

[0046] In this embodiment, in order to make the accumulated water flow in an orderly manner along the mirror ring 3, according to the changing trend that the height of the bottom wall of the mirror ring 3 away from the door is greater than the height near the door, a water guide boss 33 higher than the bottom of the installation cavity 31 is provided on the side of the installation cavity 31 away from the door, and a guide channel is formed by the gap between the bottom of the water guide boss 33 and the bottom wall of the installation cavity 31. In particular, when the exterior rearview mirror is in a folded state, water can flow from top to bottom into the fifth drainage hole 32 through the guide channel, which has a good diversion effect.

[0047] In one possible implementation, see Figure 1 and Figure 7 A sealing gasket 4 is provided between the base 1 and the vehicle door. The sealing gasket 4 is provided with a connecting hole 41 penetrating the second drainage hole 11 . The second drainage hole 11 is located at the lower part of the base 1 , and the connecting hole 41 is located at the lower part of the sealing gasket 4 .

[0048] In this embodiment, a sealing gasket 4 is provided on the side wall where the base 1 is connected to the door, so as to ensure the sealing performance of the two and prevent the accumulated water from entering the vehicle. When the water inside the base 1 is discharged outward through the second drainage hole 11, the accumulated water will flow downward along the outer wall of the door and will not enter the interior of the door.

[0049] The position adjacent to the base 1 and the vehicle door can be effectively sealed by the sealing gasket 4. Corresponding to the position where the second drainage hole 11 is set, a connecting hole 41 is correspondingly set on the sealing gasket 4 to ensure that the accumulated water in the base 1 can be discharged to the outside of the base 1 through the second drainage hole 11 and the connecting hole 41 in sequence, avoiding affecting the internal components of the base 1.

[0050] When the exterior rearview mirror is in the folded state, the guide channel of the mirror ring 3 guides the water downward to the fifth drainage hole 32 and enters the mirror housing 2, and the water guide groove 24 on the inner bottom wall of the mirror housing 2 guides the water to the first drainage hole 23 and is discharged through the first drainage hole 23. At the same time, the water in the connecting portion 5 is discharged through the fourth drainage hole 51, and the water in the base 1 is discharged through the second drainage hole 11, so that the orderly discharge of water can be achieved when the rearview mirror is in the folded state.

[0051] When the exterior rearview mirror is in the open state, the water guide groove 24 on the inner bottom wall of the mirror housing 2 guides the water to the first drainage hole 23 and discharges through the first drainage hole 23. The channel between the two water guide ribs 26 guides the water near the camera to the third drainage hole 25 for discharge. At the same time, the water in the base 1 is discharged outward through the second drainage hole 11. The second drainage hole 11 is arranged on the side wall of the base 1 close to the door. The water can flow downward along the outer wall of the door, so that the water can be discharged in an orderly manner when the rearview mirror is in the open state.

[0052] In summary, the above structure can realize orderly drainage in two different states of the mirror housing 2 , namely, opened and folded, so as to ensure the normal use of the internal components of the mirror housing 2 .

[0053] Based on the same inventive concept, the embodiment of the present application further provides an exterior rearview mirror, which includes an exterior rearview mirror drainage structure. The exterior rearview mirror is provided with a first drainage hole 23 at the bottom of the mirror housing 2 to drain the water inside the mirror housing 2 in an orderly manner, thereby ensuring the normal use of the internal components of the mirror housing 2, and is provided with a second drainage hole 11 on the base 1 to drain the water inside the base 1 in an orderly manner, thereby avoiding the influence of accumulated water on the internal circuit of the base 1, ensuring the smoothness of drainage of the exterior rearview mirror, avoiding the potential safety hazard caused by accumulated water in the rearview mirror, and improving the safety of vehicle use.

[0054] Based on the same inventive concept, the embodiment of the present application further provides a vehicle, the vehicle comprising an exterior rearview mirror. The beneficial effects of the vehicle are the same as those of the exterior rearview mirror, which will not be described in detail herein.

[0055] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. The drainage structure of the exterior rearview mirror is characterized in that: The mirror housing (2) comprises a base (1), a mirror housing (2) and a mirror ring (3), wherein the base (1) is connected to a vehicle door, the mirror housing (2) is connected above the base (1), the mirror ring (3) is connected to the rear side of the mirror housing (2), a first drainage hole (23) is provided at the bottom of the mirror housing (2), and a second drainage hole (11) is provided on the base (1), wherein the second drainage hole (11) is located on a side wall of the base (1) close to the vehicle door.

2. The exterior rearview mirror drainage structure according to claim 1, characterized in that: A water guide groove (24) extending toward one side of the center axis of the vehicle body is provided on the inner bottom wall of the mirror housing (2); the water guide groove (24) is communicated with the first drainage hole (23); and the water guide groove (24) is used to guide water in the mirror housing (2) to flow to the first drainage hole (23).

3. The exterior rearview mirror drainage structure according to claim 1, characterized in that: The mirror housing (2) is also provided with a third drainage hole (25), and a water guide rib (26) for guiding water into the third drainage hole (25) is provided inside the mirror housing (2), and two water guide ribs (26) are provided, and a water guide channel (28) communicating with the third drainage hole (25) is formed between the two water guide ribs (26).

4. The exterior rearview mirror drainage structure according to claim 3, characterized in that: The mirror housing (2) comprises a main mirror housing (21) and a sub-mirror housing (22) connected to the bottom of the main mirror housing (21); the base (1) is connected to the bottom of the sub-mirror housing (22); the first drainage hole (23) and the third drainage hole (25) are both arranged at the bottom of the sub-mirror housing (22); the first drainage hole (23) is located on a side of the sub-mirror housing (22) close to the vehicle door; and the third drainage hole (25) is located on a side of the sub-mirror housing (22) away from the vehicle door.

5. The exterior rearview mirror drainage structure according to claim 1, characterized in that: A connecting portion (5) is provided on one side of the mirror housing (2) adjacent to the vehicle door, the connecting portion (5) extending downwardly in the vehicle body to connect with the base (1), the connecting portion (5) being provided with a fourth drainage hole (51), and when the exterior rearview mirror is in a folded state, the fourth drainage hole (51) can follow the connecting portion (5) to swing away from the top surface of the base (1) to drain water in the mirror housing (2).

6. The exterior rearview mirror drainage structure according to any one of claims 1 to 5, characterized in that: The mirror housing (2) has a accommodating cavity (27) opening backwards, the mirror ring (3) is installed on the opening side of the accommodating cavity (27), the mirror ring (3) has an installation cavity (31) arranged backwards for accommodating a lens (6), and the mirror ring (3) is provided with a fifth drainage hole (32) communicating with the accommodating cavity (27) and used for discharging water into the accommodating cavity (27).

7. The exterior rearview mirror drainage structure according to claim 6, characterized in that: A water guide boss (33) is provided in the installation cavity (31), and the water guide boss (33) is arranged at the lower part of the installation cavity (31). When the exterior rearview mirror is in a folded state, a guide channel for guiding water into the fifth drainage hole (32) is formed between the water guide boss (33) and the peripheral wall of the installation cavity (31).

8. The exterior rearview mirror drainage structure according to any one of claims 1 to 5, characterized in that: A sealing gasket (4) is provided between the base (1) and the vehicle door, and a connecting hole (41) is provided on the sealing gasket (4) and is arranged to penetrate the second drainage hole (11); the second drainage hole (11) is located at the bottom of the base (1), and the connecting hole (41) is located at the bottom of the sealing gasket (4).

9. An exterior rearview mirror, characterized in that: The exterior rearview mirror comprises the exterior rearview mirror drainage structure according to any one of claims 1-8.

10. A vehicle, characterized in that: The vehicle comprises the exterior rearview mirror of claim 9.

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