Flow guide and drainage plaque for car door lamp of car trunk
By designing a drainage trim panel, the problems of rust and short circuits caused by rainwater seepage were solved, improving the sealing and appearance of the car trunk door lights, and ensuring vehicle safety and service life.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG JIALI LISHUI IND
- Filing Date
- 2025-05-19
- Publication Date
- 2026-05-01
AI Technical Summary
The trim panels around the door lights in the trunk of existing cars are prone to water seepage during rain or car washes, causing rust, short circuits, and other malfunctions, and the appearance design is also inconsistent.
Design a flow-guiding and drainage trim panel, including a base plate, a main side wall and an auxiliary side wall, forming a downwardly recessed arc-shaped flow channel. The auxiliary side wall is tightly fitted to the external car tailgate sheet metal and connected by injection molding. The auxiliary side wall is made of an elastomer material and is covered with a hydrophobic coating in key areas. The door structure is set at an angle to enhance stability.
It effectively prevents water infiltration, improves sealing and drainage efficiency, enhances appearance harmony, and ensures vehicle safety and service life.
Smart Images
Figure CN224184225U_ABST
Abstract
Description
A drainage trim panel for car trunk door lights Technical Field
[0001] This utility model relates to the field of automotive parts technology, and in particular to a drainage trim plate for automotive trunk door lights. Background Technology
[0002] In the current automotive design field, trim panels, as an important component of vehicle appearance, not only serve to beautify the vehicle body, but also affect the vehicle's functionality and safety to a certain extent.
[0003] As shown in Figure 6, the old trim panel can easily seep into the internal cavity through the assembly gap between the trim panel and the door sheet metal when the tailgate is opened in rainy weather or during a car wash. The water then accumulates at the end of the sheet metal structure (point A in Figure 7). Due to the lack of effective drainage and sealing design at the end of the trim panel, the accumulated water cannot be drained quickly and eventually overflows into the area of electronic components or mechanical parts inside the tailgate, causing risks of rust, short circuits, and other malfunctions. This seriously affects the safety and service life of the vehicle. In addition, the appearance design of traditional trim panels has obvious shortcomings. The end structure is usually a right angle or a simple flat transition, which has a harsh visual effect and is not in harmony with the streamlined design of the vehicle body. Summary of the Invention
[0004] This utility model aims to solve the problems existing in the prior art by providing a drainage trim panel for the trunk door light of a car, which solves the problem of rainwater seepage causing damage to internal electronic components and corrosion of mechanical parts, and improves the overall aesthetics of the vehicle.
[0005] The technical solution adopted by this utility model to solve its technical problem is as follows: This guide and drainage trim for car trunk door lights includes a base plate and a surrounding wall formed with the base plate. The base plate is provided with a first latch that matches the longitudinal latch of the outer lamp housing and two second latches that are connected to the transverse latches of the outer lamp housing. The surrounding wall includes a main side wall integrally formed with the base plate and extending around one side of the base plate, and an auxiliary side wall connected between the outer wall of the main side wall and the front end of the base plate by injection molding. The auxiliary side wall is inclined and curved outward. The outer wall of the auxiliary side wall is fitted with the sheet metal of the outer car tailgate. The base plate, the main side wall and the auxiliary side wall together form a guide channel. The bottom surface of the guide channel is a downwardly concave arc-shaped surface. The guide channel has a water inlet end and a water outlet end. The main side wall and the auxiliary side wall are used to guide the water flow from the water inlet end through the guide channel to the water outlet end for discharge.
[0006] Preferably, the auxiliary sidewall includes an inner guide portion integrally formed with the outer wall of the main sidewall, and an outer curved portion that abuts against the outer sheet metal. The main sidewall and the inner guide portion form the arc-shaped surface. The extension direction of the arc-shaped surface is consistent with the initial inflow direction of the water flow, and extends along the tangent direction of the arc-shaped surface to the end edge of the substrate, so as to guide the water flow to be discharged directionally from the drainage end of the guide channel.
[0007] Preferably, the warping direction of the auxiliary sidewall forms an acute angle with the plane of the substrate, and the radius of curvature of the outer curved portion of the auxiliary sidewall gradually increases from the front end to the rear end of the substrate.
[0008] Preferably, the cross-section of the arc-shaped surface of the flow channel is V-shaped or U-shaped, and the depth of the arc-shaped surface gradually decreases from the front end to the rear end of the substrate.
[0009] Preferably, the main sidewall and the substrate are integrally injection molded, and a vertical connection structure is formed between them, with a first end extending from the upper right corner to the upper left corner of the substrate.
[0010] Preferably, the first end, the end of the main sidewall, and the end of the auxiliary sidewall are formed with drainage ends, and the width of the drainage outlet of the drainage end gradually decreases from the inside to the outside end.
[0011] Preferably, the auxiliary sidewall is made of an elastomeric material, and the end of the auxiliary sidewall has a second end, which is connected to the first end and the outer surfaces of both are flush.
[0012] Preferably, the surfaces of the substrate, main sidewall, and auxiliary sidewall are covered with a hydrophobic coating.
[0013] Preferably, the first latch and the two second latches are all inclined to the mounting plane of the substrate. The first latch has a first latch groove, and the second latch has a second latch groove. The longitudinal latch of the outer lamp housing engages with the first latch groove, and the transverse latch of the outer lamp housing engages with the second latch groove.
[0014] Preferably, both the first and second door are inclined to the bottom surface of the trim panel, and both sides of the first and second door are provided with reinforcing ribs that are connected to the trim panel.
[0015] This utility model has the following beneficial effects:
[0016] 1. By designing the auxiliary sidewall as a structure that bends and curves outwards, and making it fit tightly with the external tailgate sheet metal, not only is the sealing between the trim panel and the body improved, but the drainage guidance capacity is also enhanced. At the same time, the trim panel is provided with a guide channel formed by the base plate, the main sidewall and the auxiliary sidewall. Its bottom adopts a downward concave arc surface, which can quickly guide water entering from the water inlet to the drain outlet, effectively preventing water from accumulating inside the trim panel.
[0017] 2. The auxiliary sidewall includes an inner guide section and an outer curved section. The inner guide section works with the main sidewall to form a continuous guide surface, while the outer curved section adopts a curvature radius design that gradually increases from the front end to the back end, further improving the sealing with the sheet metal and the water flow guidance of the inner guide section to ensure smooth and reliable drainage. In addition, this structure also improves the problem of the rigid shape of the end of the traditional trim panel, making the overall appearance more smooth and natural, in line with the modern automotive streamlined aesthetic design trend, and significantly improving the visual effect and shape coordination of the whole vehicle. Attached Figure Description
[0018] Figure 1 is a front view of a drainage trim panel for a car trunk door light according to the present invention.
[0019] Figure 2 is a right view of a drainage trim panel for a car trunk door light according to the present invention.
[0020] Figure 3 is a schematic diagram of the auxiliary sidewall structure;
[0021] Figure 4 is a schematic diagram of the structure of the substrate and the main sidewall;
[0022] Figure 5 is an assembly diagram of the decorative panel, the external lamp housing, and the external tailgate sheet metal of this utility model.
[0023] Figure 6 is a schematic diagram of the old-style trim panel structure;
[0024] Figure 7 shows the assembly diagram of the old model's trim panels, external light housings, and external tailgate sheet metal.
[0025] Explanation of reference numerals in the attached figures:
[0026] 1. Substrate; 100. First latch; 101. Second latch; 102. First end; 103. First slot; 104. Second slot; 105. Reinforcing rib;
[0027] 2. Enclosure; 20. Flow channel; 200. Main sidewall; 201. Auxiliary sidewall; 202. Arc-shaped surface; 203. Water inlet end; 204. Drainage end; 205. Inner guide section; 206. Outer bend section; 207. Second end;
[0028] 3. Light housing; 4. Car tailgate sheet metal. Detailed Implementation
[0029] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.
[0030] As shown in Figures 1 to 5, a drainage trim panel for a car trunk door light includes a base plate 1 and a surrounding wall 2 formed with the base plate 1. The base plate 1 has a first latch 100 that matches the longitudinal latch of the outer lamp housing 3 and two second latches 101 that connect to the transverse latches of the outer lamp housing 3. The surrounding wall 2 includes a main sidewall 200 integrally formed with the base plate 1 and extending around one side of the base plate 1, and an auxiliary sidewall 200 connected between the outer wall of the main sidewall 200 and the front end of the base plate 1 by injection molding. 01. The auxiliary sidewall 201 is inclined and curved outward. The outer wall of the auxiliary sidewall 201 is attached to the outer car tailgate sheet metal 4. The base plate 1, the main sidewall 200 and the auxiliary sidewall 201 together form the flow channel 20. The bottom surface of the flow channel 20 is a downwardly concave arc-shaped surface 202. The flow channel 20 has a water inlet end 203 and a water outlet end 204. The main sidewall 200 and the auxiliary sidewall 201 are used to guide the water flow from the water inlet end 203 through the flow channel 20 to the water outlet end 204 for discharge.
[0031] The base plate 1 is provided with a first latch 100 and two second latches 101, which respectively match the longitudinal latches and transverse latches of the outer lamp housing 3, ensuring that the trim panel is installed firmly and is easy to disassemble and maintain. In this embodiment, the enclosure 2 is composed of a main side wall 200 and an auxiliary side wall 201. The main side wall 200 is integrally formed with the base plate 1 and extends around one side of the base plate 1. The auxiliary side wall 201 is connected to the outer wall of the main side wall 200 and the front end of the base plate 1 by injection molding. The outer wall of the auxiliary side wall 201 is inclined and curved outward, so that its outer wall can fit tightly against the outer car tailgate sheet metal 4, enhancing the sealing between the trim panel and the car body. Effectively preventing moisture from seeping in through gaps, the base plate 1, main side wall 200, and auxiliary side wall 201 together form a guide channel 20 with a downwardly concave arc-shaped surface 202. The guide channel 20 has an inlet end 203 and a drain end 204, which can guide the incoming moisture to flow smoothly from the inlet end 203 along the arc-shaped surface 202 to the drain end 204 for discharge. This avoids the potential damage caused by moisture accumulating inside the trim panel when the tailgate is opened on rainy days, and solves the problem of water accumulation in traditional trim panels. At the same time, the special shape of the auxiliary side wall 201 also improves the overall appearance and enhances the visual effect and harmony of the whole vehicle.
[0032] Specifically, as shown in Figures 1, 2, 3 and 5, the auxiliary sidewall 201 includes an inner guide portion 205 integrally formed with the outer wall of the main sidewall 200, and an outer curved portion 206 that abuts against the outer sheet metal. The main sidewall 200 and the inner guide portion 205 form an arc-shaped surface 202. The extension direction of the arc-shaped surface 202 is consistent with the initial inflow direction of the water flow, and extends along the tangent direction of the arc-shaped surface 202 to the end edge of the substrate 1, so as to guide the water flow to be discharged directionally from the drain end 204 of the guide channel 20.
[0033] The auxiliary sidewall 201 includes an inner guide portion 205 integrally formed with the outer wall of the main sidewall 200, and an outer curved portion 206 abutting against the outer sheet metal. By combining the inner guide portion 205 with the main sidewall 200 to form a downwardly recessed arc-shaped surface 202, water can flow smoothly along the arc-shaped surface 202. Its extension direction is consistent with the initial inflow direction of the water and extends along the tangential direction of the arc-shaped surface 202 to the end edge of the substrate 1, thereby ensuring that water is directionally discharged from the drainage end 204 of the guide channel 20. This optimizes the water flow path, reduces turbulence and resistance, and improves drainage efficiency.
[0034] Furthermore, as shown in Figures 1 to 3, the warping direction of the auxiliary sidewall 201 forms an acute angle with the plane of the substrate 1, and the radius of curvature of the outer curved portion 206 of the auxiliary sidewall 201 gradually increases from the front end to the rear end of the substrate 1.
[0035] The warping direction of the auxiliary sidewall 201 forms an acute angle with the plane of the substrate 1, and the radius of curvature of the outer curved portion 206 of the auxiliary sidewall 201 gradually increases from the front end to the rear end of the substrate 1. This can guide the water flow to enter the guide channel 20 more smoothly, while enhancing the fit between the auxiliary sidewall 201 and the external car tailgate sheet metal 4, improving the overall sealing performance, and preventing moisture from seeping in from the gaps.
[0036] Furthermore, as shown in Figures 1 to 4, the cross-section of the arc-shaped surface 202 of the flow channel 20 is V-shaped or U-shaped, and the depth of the arc-shaped surface 202 gradually decreases from the front end to the rear end of the substrate 1.
[0037] The cross-section of the arc-shaped curved surface 202 of the flow channel 20 is V-shaped or U-shaped, and the depth of the arc-shaped curved surface 202 gradually decreases from the front end to the end end of the substrate 1. By adjusting the cross-sectional shape and depth of the flow channel 20, the water flow path is further optimized, so that water can flow more smoothly from the inlet end 203 to the outlet end 204, which helps to accelerate the water flow speed and improve the drainage efficiency.
[0038] Specifically, as shown in Figure 4, the main sidewall 200 and the substrate 1 are integrally injection molded and a vertical connection structure is formed between them. The upper right corner of the substrate 1 extends to the upper left corner to form a first end 102.
[0039] The main sidewall 200 and the substrate 1 are manufactured using an integral injection molding process, forming a vertical connection structure between them. This ensures a high-strength connection between the main sidewall 200 and the substrate 1. The upper right corner of the substrate 1 extends to the upper left corner to form the first end 102, which helps to enhance the overall rigidity of the decorative panel and its connection with the auxiliary sidewall 201. At the same time, it provides an additional support structure for the drainage end 204, making the entire decorative panel more stable and reliable during installation and use.
[0040] Furthermore, as shown in Figures 1, 2 and 5, the first end 102, the end of the main sidewall 200 and the end of the auxiliary sidewall 201 are formed with a drain end 204, and the width of the drain outlet of the drain end 204 gradually decreases from the inside to the outside end.
[0041] The first end 102, the end of the main side wall 200, and the end of the auxiliary side wall 201 together form the drainage end 204. The width of the drainage outlet of the drainage end 204 gradually decreases from the inside to the outside. By gradually reducing the width of the drainage outlet, the water flow speed can be accelerated, effectively preventing water from accumulating in the guide channel 20. The narrow design can also reduce the possibility of external pollutants entering and improve the overall aesthetics of the car tailgate.
[0042] Further, as shown in Figures 1 to 4, the auxiliary sidewall 201 is made of an elastomeric material, and the end of the auxiliary sidewall 201 has a second end 207, which is connected to the first end 102 and the outer surfaces of the two are flush.
[0043] The auxiliary sidewall 201 is made of silicone or TPE elastomer material. The main sidewall 200 and the base plate 1 are made of two-color injection molding, which can adapt to the slight shape differences of the tailgate sheet metal of different models, provide better sealing effect, and prevent water leakage. The end of the auxiliary sidewall 201 is provided with a second end 207, which is connected to the first end 102. The outer surfaces of the two are flush, which not only enhances the consistency and aesthetics of the overall appearance of the trim panel, but also ensures that the auxiliary sidewall 201 fits tightly with the body sheet metal in actual use, improves sealing performance, reduces the risk of water seeping in from the gaps, and protects the safety of electronic components and mechanical parts inside the vehicle.
[0044] Specifically, as shown in Figures 1 to 4, the surfaces of the substrate 1, the main sidewall 200, and the auxiliary sidewall 201 are covered with a hydrophobic coating.
[0045] By applying hydrophobic materials to key parts of the trim panel, the hydrophobic coating is at least one of fluoropolymers, silicon-based materials, or nano-silica composite coatings, which can significantly reduce the adhesion and accumulation of moisture on its surface, thereby effectively preventing moisture from penetrating into the interior of the trim panel or the gaps in the body. The hydrophobic coating not only improves the waterproof performance of the trim panel, but also enhances its weather resistance and stain resistance, and extends the service life of the trim panel.
[0046] Specifically, as shown in Figures 1, 2 and 4, the first latch 100 and the two second latches 101 are all inclined to the mounting plane of the substrate 1. The first latch 100 is provided with a first latching groove 103, and the second latches 101 are provided with a second latching groove 104. The longitudinal latching block of the outer lamp housing 3 is engaged with the first latching groove 103, and the transverse latching plate of the outer lamp housing 3 is engaged with the second latching groove 104.
[0047] The first latch 100 and the two second latches 101 are both inclined to the mounting plane of the substrate 1. The first latch 100 is provided with a first latching groove 103, and the second latch 101 is provided with a second latching groove 104. The longitudinal latching block of the outer lamp housing 3 is engaged with the first latching groove 103, and the transverse latching plate is engaged with the second latching groove 104. This inclined design helps to improve the stability and reliability of the latching structure, ensuring that the decorative panel is not easy to loosen or fall off after installation.
[0048] Furthermore, as shown in Figures 1, 2 and 4, both the first door 100 and the second door 101 are inclined to the bottom surface of the trim panel, and both sides of the first door 100 and the second door 101 are provided with reinforcing ribs 105 connected to the trim panel.
[0049] Both the first door 100 and the second door 101 are inclined to the bottom surface of the trim panel, and both sides of the first door 100 and the second door 101 are provided with reinforcing ribs 105 connected to the trim panel. This design significantly improves the strength and rigidity of the door structure by adding reinforcing ribs 105 on both sides of the door, reduces the risk of the lamp housing loosening due to vibration or collision, and ensures the safety and durability of the vehicle.
[0050] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.
Claims
1. A drainage trim panel for a car trunk door light, comprising a base plate (1) and a surrounding wall (2) formed therewith, the base plate (1) having a first latch (100) matching a longitudinal latch of an outer lamp housing (3) and two second latches (101) connected to transverse latches of the outer lamp housing (3), characterized in that: The enclosure (2) includes a main sidewall (200) integrally formed with the substrate (1) and extending around one side of the substrate (1), and an auxiliary sidewall (201) connected between the outer wall of the main sidewall (200) and the front end of the substrate (1) by injection molding. The auxiliary sidewall (201) is inclined and curved outward. The outer wall of the auxiliary sidewall (201) is attached to the outer tailgate sheet metal (4). The substrate (1), the main sidewall (200) and the auxiliary sidewall (201) together form a flow channel (20). The bottom surface of the flow channel (20) is a downwardly concave arc-shaped surface (202). The flow channel (20) has a water inlet end (203) and a water outlet end (204). The main sidewall (200) and the auxiliary sidewall (201) are used to guide water flow from the water inlet end (203) through the flow channel (20) to the water outlet end (204) for discharge.
2. A drainage trim plate for a car trunk door light according to claim 1, characterized in that: The auxiliary sidewall (201) includes an inner guide portion (205) integrally formed with the outer wall of the main sidewall (200) and an outer curved portion (206) that abuts against the outer sheet metal. The main sidewall (200) and the inner guide portion (205) form the arc-shaped surface (202). The extension direction of the arc-shaped surface (202) is consistent with the initial inflow direction of the water flow and extends along the tangent direction of the arc-shaped surface (202) to the end edge of the substrate (1) to guide the water flow to be discharged directionally from the drain end (204) of the guide channel (20).
3. A drainage trim plate for a car trunk door light according to claim 2, characterized in that: The warping direction of the auxiliary sidewall (201) forms an acute angle with the plane of the substrate (1), and the radius of curvature of the outer curved portion (206) of the auxiliary sidewall (201) gradually increases from the front end to the rear end of the substrate (1).
4. A drainage trim plate for a car trunk door light according to claim 2, characterized in that: The cross-section of the arc-shaped surface (202) of the flow channel (20) is V-shaped or U-shaped, and the depth of the arc-shaped surface (202) gradually decreases from the front end to the rear end of the substrate (1).
5. A drainage trim plate for a car trunk door light according to claim 1, characterized in that: The main sidewall (200) and the substrate (1) are integrally injection molded and a vertical connection structure is formed between them. The upper right corner of the substrate (1) extends to the upper left corner to form a first end (102).
6. A drainage trim plate for a car trunk door light according to claim 5, characterized in that: The first end (102), the end of the main sidewall (200) and the end of the auxiliary sidewall (201) are formed with a drain end (204), and the width of the drain outlet of the drain end (204) gradually decreases from the inside to the outside end.
7. A drainage trim plate for a car trunk door light according to claim 5, characterized in that: The auxiliary sidewall (201) is made of an elastomeric material and has a second end (207) at its end. The second end (207) is connected to the first end (102) and their outer surfaces are flush.
8. A drainage trim plate for a car trunk door light according to claim 1, characterized in that: The surfaces of the substrate (1), main sidewall (200) and auxiliary sidewall (201) are covered with a hydrophobic coating.
9. A drainage trim plate for a car trunk door light according to claim 1, characterized in that: The first card door (100) and the two second card doors (101) are all inclined to the mounting plane of the substrate (1). The first card door (100) is provided with a first card slot (103), and the second card door (101) is provided with a second card slot (104). The longitudinal card block of the outer lamp housing (3) is engaged with the first card slot (103), and the transverse card plate of the outer lamp housing (3) is engaged with the second card slot (104).
10. A drainage trim plate for a car trunk door light according to claim 9, characterized in that: The first door (100) and the second door (101) are both inclined to the bottom surface of the decorative panel, and the first door (100) and the second door (101) are provided with reinforcing ribs (105) connected to the decorative panel on both sides.