An exterior rearview mirror with a drainage structure
By designing drainage components and flow guiding structures on the exterior rearview mirrors, the problems of low efficiency and rainwater backflow in existing drainage structures are solved, achieving efficient drainage and waterproofing, and ensuring driving safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGSU MINGZHI AUTO PARTS CO LTD
- Filing Date
- 2025-10-22
- Publication Date
- 2026-08-04
AI Technical Summary
Existing rearview mirrors have inefficient drainage structures, making it difficult for rainwater to drain quickly. Furthermore, rainwater can easily flow back or accumulate due to wind resistance while the vehicle is in motion, affecting visibility and the safety of internal electronic components.
A drainage component was designed, including a mounting base, a drainage box, a filter screen, and bolts. Combined with the funnel-shaped drainage hole, rain guide groove, and inclined guide plate at the bottom of the mirror housing, and a trapezoidal sealing ring, it forms a highly efficient waterproof drainage system that prevents rainwater from seeping in and drains quickly.
It significantly improves drainage efficiency, ensures clear mirrors, protects internal electronic components, enhances driving safety and reliability, and prevents rainwater backflow and accumulation.
Smart Images
Figure CN224589029U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of automotive rearview mirror technology, and in particular to an exterior rearview mirror with a drainage structure. Background Technology
[0002] The exterior rearview mirror is an important safety component of a car. Drivers can observe the traffic conditions behind and to the sides of the vehicle through the exterior rearview mirror, thereby making accurate driving judgments. On rainy days or after washing the car, rainwater or car wash water can easily accumulate on the mirror surface, housing, and other parts of the exterior rearview mirror. On the one hand, the water stains accumulated on the mirror surface can blur the driver's vision, seriously affecting the observation of road conditions behind, posing a significant safety hazard. On the other hand, if the water seeps into the interior of the exterior rearview mirror, it can damage the internal electronic components (such as heating wires, turn signals, etc.), reducing the lifespan of the exterior rearview mirror and increasing maintenance costs.
[0003] Currently, existing rearview mirror drainage structures have many shortcomings. Some rearview mirrors only use simple openings for drainage, which is inefficient and makes it difficult to drain water quickly. Furthermore, during driving, rainwater flows backward due to wind resistance, with the upper part flowing onto the rearview mirror surface and the lower part flowing back onto the mirror, causing rainwater to accumulate on the mirror and obstructing visibility. Therefore, we propose an exterior rearview mirror with a drainage structure. Utility Model Content
[0004] The purpose of this utility model is to provide an exterior rearview mirror with a drainage structure to solve the many shortcomings of existing exterior rearview mirror drainage structures. Some exterior rearview mirrors only drain water through simple openings, which has low drainage efficiency and makes it difficult to quickly drain accumulated water. Moreover, during driving, rainwater flows backward due to wind resistance. The upper part will flow onto the surface of the rearview mirror, while the lower part will flow back onto the rearview mirror, causing rainwater to accumulate on the rearview mirror and affecting visibility.
[0005] To achieve the above objectives, this utility model provides the following technical solution: an exterior rearview mirror with a drainage structure, comprising a mirror housing, a mirror surface, and a drainage assembly. The mirror surface is adapted to be installed at the front opening of the mirror housing. The drainage assembly is disposed at the bottom of the mirror housing and is used to drain water accumulated inside the mirror housing. The drainage assembly includes a mounting base, a drainage box, a filter screen, and bolts. The mounting base is fixedly connected to the bottom of the mirror housing. The drainage box is detachably connected to the mounting base by bolts. The bolts penetrate the side wall of the drainage box and are threadedly connected to the mounting base. The filter screen is disposed at the inlet of the drainage box and is used to intercept debris.
[0006] As a preferred embodiment, the bottom of the mirror housing is provided with multiple drainage holes, the diameter of which gradually increases from the inside to the outside and has a funnel-shaped structure, and the bottom of the drainage box is provided with a drainage groove.
[0007] As a preferred embodiment, a rain guide groove is provided on the outer side of the top of the mirror housing. The rain guide groove extends along the length of the mirror housing, and both ends of the rain guide groove are bent downward to form drainage outlets. An inclined guide plate is fixed on the inner wall of the front end of the mirror housing, and anti-slip protrusions are distributed on the surface of the inclined guide plate.
[0008] As a preferred embodiment, a sealing ring is provided at the connection between the mirror housing and the mirror surface. The sealing ring is made of elastic silicone and has a trapezoidal cross-section. The sealing ring is used to prevent water from seeping into the interior of the mirror housing.
[0009] As a preferred embodiment, a protruding strip is fixedly provided on the outer wall of the bottom end of the mirror housing, and the protruding strip extends along the inner side wall of the mirror housing.
[0010] As a preferred embodiment, one end of the mirror housing is fixedly fitted with a mirror mount for connection to the vehicle body.
[0011] The technical effects and advantages of this utility model are as follows: 1. Through the innovative collaborative design of the drainage components with the mirror housing and mirror surface, the problems of low efficiency and easy clogging of traditional open drainage are completely solved. In the drainage components, the mounting base is firmly connected to the bottom of the mirror housing, and the drainage box can be easily disassembled and installed with bolts, which is convenient for daily maintenance. The filter screen effectively intercepts debris and, together with the funnel-shaped drainage hole at the bottom of the mirror housing, forms an efficient drainage channel. At the same time, the rain guide groove on the top of the mirror housing orderly discharges rainwater, and the side wall protrusions effectively prevent rainwater from flowing back due to wind resistance, which comprehensively improves drainage efficiency, ensures clear mirror surface in rainy weather, and significantly enhances driving safety. 2. Through the coordinated design of the sealing ring, inclined guide plate, and anti-slip protrusions, a highly efficient waterproof and drainage system is constructed. The trapezoidal cross-section elastic silicone sealing ring is tightly fitted at the connection between the mirror housing and the mirror surface, forming a reliable waterproof barrier that effectively prevents water from seeping into the mirror housing. The inclined guide plate, together with the evenly distributed anti-slip protrusions on the surface, guides rainwater to flow quickly to the drainage channel, preventing water from forming a water film and stagnating. This design optimizes the entire process from rainwater reception, guidance, blocking to discharge. Compared with traditional drainage structures, it significantly improves drainage efficiency, eliminates the problem of rainwater backflow and accumulation, and greatly enhances the reliability and practicality of the exterior rearview mirror in bad weather, providing strong protection for driving safety. Attached Figure Description
[0012] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a partial structural schematic diagram of the present invention; Figure 3 for Figure 1 Enlarged structural diagram at point A in the middle; Figure 4 This is a schematic diagram of the unfolded structure of this utility model; Figure 5This is a schematic diagram of the drainage component structure of this utility model.
[0013] In the diagram: 1. Mirror housing; 2. Mirror surface; 3. Drainage assembly; 4. Mirror base; 5. Sealing ring; 6. Inclined guide plate; 7. Anti-slip protrusion; 8. Drain hole; 9. Rain guide groove; 10. Raised strip; 301. Mounting base; 302. Drainage box; 303. Filter screen; 304. Bolt. Detailed Implementation
[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0015] Please see the appendix Figure 1 - Appendix Figure 5 An exterior rearview mirror with a drainage structure includes a mirror housing 1, a mirror surface 2, and a drainage component 3. The mirror surface 2 is fitted and installed at the front opening of the mirror housing 1. The drainage component 3 is located at the bottom of the mirror housing 1 and is used to drain water accumulated inside the mirror housing 1. The drainage component 3 includes a mounting base 301, a drainage box 302, a filter screen 303, and bolts 304. The mounting base 301 is fixedly connected to the bottom of the mirror housing 1. The drainage box 302 is detachably connected to the mounting base 301 by bolts 304. The bolts 304 penetrate the side wall of the drainage box 302 and are threadedly connected to the mounting base 301. The filter screen 303 is located at the inlet of the drainage box 302 and is used to intercept debris. The mounting base 301 is fixedly connected to the bottom of the mirror housing 1 by welding or high-strength adhesive to ensure stable support for the drainage box 302. The drainage box 302 and the mounting base 301 are detachably connected by bolts 304, which facilitates the later cleaning of mud, dust, and other debris trapped by the filter screen 303 and ensures the long-term efficient operation of the drainage component 3.
[0016] Multiple drainage holes 8 are provided at the bottom of the interior of the mirror housing 1. The diameter of the drainage holes 8 gradually increases from the inside to the outside and has a funnel-shaped structure. A drainage groove is provided at the bottom of the drainage box 302. A rain guide groove 9 is provided on the outer side of the top of the mirror housing 1. The rain guide groove 9 extends along the length of the mirror housing 1, and both ends of the rain guide groove 9 bend downward to form a drainage outlet. An inclined guide plate 6 is fixed on the inner wall of the front end of the mirror housing 1. The surface of the inclined guide plate 6 is distributed with anti-slip protrusions 7. The funnel-shaped drainage holes 8 at the bottom of the interior of the mirror housing 1 utilize fluid dynamics principles, and the large-diameter outlet design effectively reduces... The water flow resistance, combined with the drainage groove at the bottom of the drainage box 302, can quickly drain the accumulated water while reducing the risk of debris clogging. After the rainwater is collected by the top rain guide groove 9, it is guided to the outside of the mirror housing 1 through the outlet at both ends to prevent rainwater from flowing onto the mirror surface 2 and affecting the field of vision. The inclined guide plate 6 is fixed to the inner wall of the front end of the mirror housing 1 with screws. Its surface anti-slip protrusions 7 can effectively break the surface tension of the accumulated water, causing the rainwater to slide quickly down the guide plate to the drainage hole 8. In addition, the inclined angle design and the rain guide groove 9 form a three-dimensional drainage path, further improving the overall drainage efficiency.
[0017] Specifically, through the coordinated design of the drainage component 3 with the mirror housing 1 and mirror surface 2, the drawbacks of the existing simple opening drainage are effectively solved. The mounting base 301 in the drainage component 3 is fixed to the bottom of the mirror housing 1, and the drainage box 302 is detachably connected by bolts 304, which is convenient for cleaning and maintenance. The filter screen 303 intercepts debris to avoid clogging. Combined with the funnel-shaped structure of the drainage hole 8 at the bottom of the mirror housing 1, with a smaller inner diameter and a larger outer diameter, it accelerates the drainage of accumulated water. At the same time, during vehicle operation, the rain guide groove 9 at the top of the mirror housing 1 guides the rainwater at the top to drain in an orderly manner, and the convex strip 10 prevents the rainwater at the bottom of the mirror housing 1 from flowing backward. This solves the problem of rainwater flowing backward due to wind resistance and accumulating in the rearview mirror, which affects the vision. It greatly improves drainage efficiency and ensures clear rear visibility in rainy weather.
[0018] Please see the appendix Figure 1 - Appendix Figure 4 A sealing ring 5 is provided at the connection between the mirror housing 1 and the mirror surface 2. The sealing ring 5 is made of elastic silicone and has a trapezoidal cross section. The sealing ring 5 is used to prevent water from seeping into the interior of the mirror housing 1. The elastic silicone sealing ring 5 with a trapezoidal cross section is tightly embedded in the assembly gap between the mirror housing 1 and the mirror surface 2. The elastic deformation of the silicone forms a sealing pressure. Even under bumpy conditions, it can reliably prevent rainwater from seeping into the interior of the mirror housing 1 and protect electronic components such as heating wires and turn signals from water damage.
[0019] A protrusion 10 is fixedly provided on the outer wall of the bottom end of the mirror housing 1. The protrusion 10 extends along the inner side wall of the mirror housing 1. A mirror base 4 for connecting with the vehicle body is fixedly installed at one end of the mirror housing 1. The protrusion 10 extends along the inner side wall of the mirror housing 1 and communicates with the drainage hole 8. Its protruding structure changes the direction of rainwater flow and guides the water accumulated on the side wall to the bottom. At the same time, when the vehicle is traveling at high speed, the protrusion 10 can disrupt the airflow and reduce the possibility of rainwater flowing back to the mirror surface 2 due to wind resistance.
[0020] Specifically, the sealing ring 5, the inclined guide plate 6, and the anti-slip protrusion 7 work together to help disperse water flow and further optimize the waterproof and drainage effect. The elastic silicone sealing ring 5 has a trapezoidal cross-section that fits tightly against the connection between the mirror housing 1 and the mirror surface 2, blocking the path of water seepage into the interior and preventing rainwater from accumulating disorderly inside the mirror housing 1. Compared with the existing simple drainage design, this solution optimizes the entire process of rainwater reception, diversion, interception, and discharge, solving the problems of rainwater backflow and accumulation and low drainage efficiency, improving the reliability and practicality of the exterior rearview mirror in rainy weather, and ensuring driving safety.
[0021] Working principle of this utility model: This utility model is an exterior rearview mirror with a drainage structure. When the exterior rearview mirror is working, rainwater falls on the top of the mirror housing 1. The rain guide groove 9 guides the rainwater from the upper end along the length direction, and the two ends are bent to the outlet so that it is discharged in an orderly manner. Rainwater on the side wall of the mirror housing 1 is blocked by the protrusions 10 to prevent backflow. It is further aided by the anti-slip protrusions 7 on the surface of the inclined guide plate 6 on the inner wall. The anti-slip protrusions 7 are hemispherical and evenly distributed on the inclined guide plate 6 to prevent water from forming a large water film on the inclined guide plate 6 and to accelerate the flow of water. The mirror housing 1 has a funnel-shaped drainage hole 8 at the bottom inside, which works with the drainage component 3. The drainage box 302 is detachably connected to the mounting base 301 by bolts 304 for easy maintenance. The filter screen 303 intercepts debris, and the accumulated water is quickly discharged through the drainage groove at the bottom of the drainage box 302. At the same time, the trapezoidal elastic silicone sealing ring 5 at the connection between the mirror housing 1 and the mirror surface 2 effectively prevents the accumulated water from seeping into the interior, realizing efficient treatment of rainwater from receiving, guiding, intercepting to discharge, ensuring the clarity of the mirror surface 2 and the safety of the internal components. At this point, the entire process is complete.
[0022] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. An exterior mirror with a drain structure, comprising a mirror housing (1), a mirror surface (2) and a drain assembly (3), characterized in that: The mirror (2) is adapted to be installed at the front opening of the mirror housing (1). The drainage component (3) is set at the bottom of the mirror housing (1) and is used to drain the water accumulated inside the mirror housing (1). The drainage component (3) includes a mounting base (301), a drainage box (302), a filter screen (303), and a bolt (304). The mounting base (301) is fixedly connected to the bottom of the mirror housing (1). The drainage box (302) is detachably connected to the mounting base (301) by the bolt (304). The bolt (304) passes through the side wall of the drainage box (302) and is threadedly connected to the mounting base (301). The filter screen (303) is set at the inlet of the drainage box (302) and is used to intercept debris.
2. The exterior mirror with a drainage structure according to claim 1, characterized in that: The mirror housing (1) has multiple drainage holes (8) at the bottom inside. The diameter of the drainage holes (8) gradually increases from the inside to the outside and has a trumpet-shaped structure. The bottom of the drainage box (302) has a drainage groove.
3. The exterior mirror with a drain according to claim 1, characterized in that: The mirror housing (1) has a rain guide groove (9) on the outer side of the top. The rain guide groove (9) extends along the length of the mirror housing (1), and the two ends of the rain guide groove (9) are bent downward to form a drainage outlet. An inclined guide plate (6) is fixed on the inner wall of the front end of the mirror housing (1). Anti-slip protrusions (7) are distributed on the surface of the inclined guide plate (6).
4. The exterior rearview mirror of claim 1, wherein: A sealing ring (5) is provided at the connection between the mirror housing (1) and the mirror surface (2). The sealing ring (5) is made of elastic silicone and has a trapezoidal cross section. The sealing ring (5) is used to prevent water from seeping into the interior of the mirror housing (1).
5. The exterior rearview mirror of claim 4, wherein: A protrusion (10) is fixedly provided on the outer wall of the bottom end of the mirror housing (1), and the protrusion (10) extends along the inner side wall of the mirror housing (1).
6. The exterior mirror with a drainage structure according to claim 5, characterized in that: One end of the mirror housing (1) is fixedly installed with a mirror mount (4) for connection with the vehicle body.