Lightweight automotive trim panel structure
By introducing mounting holes, snap-fit elements, and a protective coating into the lightweight automotive trim structure, the problem of inconvenient connection was solved, resulting in convenient assembly and improved corrosion resistance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WUHAN FEIYA AUTOMOBILE ENG PLASTIC CO LTD
- Filing Date
- 2025-07-25
- Publication Date
- 2026-07-21
AI Technical Summary
Existing lightweight automotive trim structures are inconvenient to connect, resulting in low assembly efficiency.
The design incorporates through-hole mounting holes and connection structures within the plate, including mounting grooves, positioning holes, snap fasteners, and positioning posts. Combined with protective structures such as high-performance epoxy resin layers, anti-corrosion layers, and protective layers, it improves assembly convenience and corrosion resistance.
It enables convenient assembly of lightweight automotive trim structures, improves corrosion resistance, and extends service life.
Smart Images

Figure CN224528571U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of automotive trim panel technology, and in particular to a lightweight automotive trim panel structure. Background Technology
[0002] Automotive trim panels are components used to decorate and protect automobiles. They can cover the interior and exterior of a car to enhance its aesthetics and comfort. Their lightweight design not only helps improve the overall vehicle's energy efficiency but also enhances its handling performance and safety. Therefore, a lightweight automotive trim panel structure is used. To address this, patent CN218171959U discloses a lightweight truck door trim structure, relating to the field of door trim technology, including an inner panel and an outer panel. The inner panel and the outer panel are assembled to form a door trim. One side of the inner panel is provided with a row of several inner panel recesses, and one side of the outer panel is provided with a doghouse structure. After the inner panel and the outer panel are assembled, the several inner panel recesses are all located inside the doghouse structure. The recesses can be limited by the slots, which facilitates the alignment of the screw mounting base with the positioning holes on the fixing plate, making it convenient to install screws for fixing. At the same time, by providing several recesses with holes on one side of the inner panel, and providing perforated bosses on the mating surface of the outer panel and the inner panel that correspond one-to-one with the recesses with holes, the original gap and surface difference between the inner panel and the outer panel are maintained after assembly. The overall strength and firmness are high by screw connection. By providing long and short grooves in the inner panel, the weight of the inner panel can be reduced, while saving materials and reducing manufacturing costs. Although the lightweight truck door trim structure mentioned above can reduce the weight of the inner panel and save materials and reduce manufacturing costs by setting long and short grooves in the inner panel, its applicability is low in use because it is inconvenient to connect and does not improve assembly efficiency. Utility Model Content
[0003] The purpose of this invention is to provide a lightweight automotive trim structure to solve the problem of inconvenient connection of existing lightweight automotive trim structures.
[0004] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a lightweight automotive trim panel structure, comprising a panel body; The plate body has mounting holes evenly distributed on both sides, and reinforcing ribs are fixed at the edges of the plate body. The bottom of the plate is evenly provided with connecting structures on both sides. The connecting structures include mounting grooves opened on both sides of the bottom of the plate. The interior of the plate on one side of the mounting groove is provided with positioning holes. The interior of the mounting groove is provided with buckles. The interior of the buckles is provided with hollows on one side. Protective structures are provided on both sides of the top of the plate.
[0005] When using this device, the connection structure facilitates assembly, thereby improving the applicability of the lightweight automotive trim structure. The protective structure also facilitates corrosion protection, further enhancing the ease of use.
[0006] Preferably, each of the hollowed-out bottoms is provided with a support plate, and each of the positioning holes has a positioning post penetrating through it.
[0007] Preferably, the bottom end of the positioning post is fixedly connected to the top end of the support plate, and the positioning post and the plate form a sliding structure through positioning holes. The positioning post and positioning holes prevent assembly difficulties caused by misalignment. The elastic design of the buckle provides continuous clamping force, fixing the buckle and the plate together, thus facilitating the assembly of the positioning post with related vehicle body components.
[0008] Preferably, one side of the bottom end of the support plate is fixedly connected to one side of the bottom of the buckle.
[0009] Preferably, the protective structure includes a high-performance epoxy resin layer, an anti-corrosion layer, a high-temperature resistant coating, and a protective layer. The high-performance epoxy resin layer is fixed to both sides of the top of the plate. An anti-corrosion layer is provided on the outer wall of the high-performance epoxy resin layer. A high-temperature resistant coating is provided on the outer wall of the anti-corrosion layer. A protective layer is provided on the outer wall of the high-temperature resistant coating.
[0010] Preferably, the anti-corrosion layer is actually a carbon fiber composite material layer. Under the action of the anti-corrosion layer, while significantly improving the strength and stiffness of the plate, the weight of the plate can be significantly reduced, achieving the goal of lightweighting the automobile. The high-performance epoxy resin layer and the anti-corrosion layer effectively improve the corrosion resistance of the plate.
[0011] Preferably, the protective layer is actually an ultraviolet-resistant coating. The high-temperature resistant coating prevents the substrate from experiencing performance degradation due to thermal expansion or softening. The protective layer also reduces the temperature rise of the coating caused by ultraviolet radiation, thus extending its service life.
[0012] The lightweight automotive trim structure provided by this utility model has the following advantages: By incorporating a connecting structure, the positioning pins and holes prevent assembly difficulties caused by misalignment. The elastic design of the buckles provides continuous clamping force, fixing the buckles to the panel and facilitating the assembly of the positioning pins with the vehicle body components. This makes the device easy to assemble and improves the applicability of the lightweight automotive trim structure. By incorporating a protective structure and an anti-corrosion layer, the strength and rigidity of the panel are significantly improved while its weight is substantially reduced, achieving the goal of lightweighting automobiles. The high-performance epoxy resin layer and anti-corrosion layer effectively enhance the panel's corrosion resistance. The high-temperature resistant coating prevents the substrate from deteriorating due to thermal expansion or softening. The protective layer reduces the temperature rise of the coating caused by ultraviolet radiation, extending its service life. This device facilitates corrosion protection and improves the ease of use of the lightweight automotive trim panel structure. Attached Figure Description
[0013] Figure 1 This is a three-dimensional first-view structural diagram of the present invention; Figure 2 For the present utility model Figure 1 Enlarged structural diagram at point A in the middle; Figure 3 This is a three-dimensional first-view structural diagram of the connection structure of this utility model; Figure 4 This is a schematic diagram of the three-dimensional second-view structure of this utility model; Figure 5 This is a three-dimensional second-view structural diagram of the connection structure of this utility model; Figure 6 This is a partial front view cross-sectional structural diagram of the protective structure of this utility model.
[0014] The following are the annotations in the figure: 1. Plate; 2. Connecting structure; 201. Buckle; 202. Positioning post; 203. Positioning hole; 204. Hollow out; 205. Mounting groove; 206. Support plate; 3. Protective structure; 301. High-performance epoxy resin layer; 302. Anti-corrosion layer; 303. High-temperature resistant coating; 304. Protective layer; 4. Mounting hole; 5. Reinforcing rib. Detailed Implementation
[0015] 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.
[0016] Please see Figures 1-6This utility model provides a lightweight automotive trim panel structure, including a panel 1. Mounting holes 4 are evenly distributed through both sides of the interior of the panel 1. Reinforcing ribs 5 are fixed at the edges of the interior of the panel 1. Connecting structures 2 are evenly distributed on both sides of the bottom of the panel 1. The connecting structures 2 include mounting grooves 205 on both sides of the bottom of the panel 1. Positioning holes 203 are distributed through the interior of the panel 1 on one side of each mounting groove 205. Buckles 201 are provided inside each mounting groove 205. A perforation 204 is provided on one side of each buckle 201. A support plate 206 is provided at the bottom of each perforation 204. Positioning posts 202 are distributed through the interior of each positioning hole 203. The bottom end of each positioning post 202 is fixedly connected to the top end of the support plate 206. The positioning post 202 and the panel 1 form a sliding structure through the positioning holes 203. One side of the bottom end of the support plate 206 is fixedly connected to one side of the bottom end of the buckle 201.
[0017] Reference Figure 2 and Figure 3 As shown, pull one side of the top of the buckle 201 to move the buckle 201 into the mounting groove 205, so that the positioning post 202 is inserted into the positioning hole 203. At this time, the top of the support plate 206 contacts the bottom of the plate 1, thereby making the buckle 201 lock on the outside of the plate 1. Under the action of the positioning post 202 and the positioning hole 203, the assembly difficulty caused by misalignment is avoided. The elastic design of the buckle 201 can provide a continuous clamping force, so that the buckle 201 and the plate 1 are fixed to each other, thereby facilitating the assembly of the positioning post 202 with the vehicle body related parts.
[0018] Protective structures 3 are provided on both sides of the top of the plate 1. The protective structures 3 include a high-performance epoxy resin layer 301, an anti-corrosion layer 302, a high-temperature resistant coating 303, and a protective layer 304. The high-performance epoxy resin layer 301 is fixed to both sides of the top of the plate 1. An anti-corrosion layer 302 is provided on the outer wall of the high-performance epoxy resin layer 301. A high-temperature resistant coating 303 is provided on the outer wall of the anti-corrosion layer 302. A protective layer 304 is provided on the outer wall of the high-temperature resistant coating 303. The anti-corrosion layer 302 is actually a carbon fiber composite material layer, and the protective layer 304 is actually an anti-ultraviolet coating.
[0019] Reference Figure 1 and Figure 6As shown, the high-performance epoxy resin layer 301 firmly bonds the anti-corrosion layer 302 to the plate 1, enhancing the overall mechanical properties of the plate 1. The anti-corrosion layer 302, which is actually a carbon fiber composite material layer, significantly improves the strength and rigidity of the plate 1 while substantially reducing its weight, achieving the goal of lightweighting the automobile. The high-performance epoxy resin layer 301 and the anti-corrosion layer 302 effectively improve the corrosion resistance of the plate 1. The high-temperature resistant coating 303 prevents performance degradation due to thermal expansion or softening of the substrate. The protective layer 304, which is actually an anti-ultraviolet coating, reduces the temperature rise of the coating caused by ultraviolet radiation, extending its service life.
[0020] Although the present invention 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 invention should be included within the protection scope of the present invention.
Claims
1. A lightweight automotive trim structure, comprising a panel (1); Its features are: The plate (1) has mounting holes (4) evenly running through both sides inside, and reinforcing ribs (5) are fixed at the edges inside the plate (1). The bottom of the plate (1) is evenly provided with connecting structures (2) on both sides. The connecting structure (2) includes mounting grooves (205) on both sides of the bottom of the plate (1). The mounting groove (205) has a positioning hole (203) through the inside of the plate (1) on one side. The mounting groove (205) has a buckle (201) inside. The buckle (201) has a hollow (204) on one side. The top two sides of the plate (1) are provided with protective structures (3).
2. The lightweight automotive trim structure according to claim 1, characterized in that: The bottom of each of the hollow (204) is provided with a support plate (206), and each of the positioning holes (203) is provided with a positioning post (202).
3. The lightweight automotive trim structure according to claim 2, characterized in that: The bottom end of the positioning column (202) is fixedly connected to the top end of the support plate (206), and the positioning column (202) and the plate (1) form a sliding structure through the positioning hole (203).
4. The lightweight automotive trim structure according to claim 2, characterized in that: One side of the bottom end of the support plate (206) is fixedly connected to one side of the bottom of the buckle (201).
5. A lightweight automotive trim panel structure according to claim 1, characterized in that: The protective structure (3) includes a high-performance epoxy resin layer (301), an anti-corrosion layer (302), a high-temperature resistant coating (303), and a protective layer (304). The high-performance epoxy resin layer (301) is fixed to both sides of the top of the plate (1). An anti-corrosion layer (302) is provided on the outer wall of the high-performance epoxy resin layer (301). A high-temperature resistant coating (303) is provided on the outer wall of the anti-corrosion layer (302). A protective layer (304) is provided on the outer wall of the high-temperature resistant coating (303).
6. A lightweight automotive trim panel structure according to claim 5, characterized in that: The anti-corrosion layer (302) is actually a carbon fiber composite material layer.
7. A lightweight automotive trim panel structure according to claim 5, characterized in that: The protective layer (304) is actually an anti-ultraviolet coating.