High durability rear wheelhouse outer panel
By employing a multi-layered composite structure and flexible suspension support design, the problems of insufficient structural strength, durability, and shock absorption performance of the rear wheel arch outer panel have been solved, achieving high durability, low noise, and convenience, thereby improving vehicle comfort and service life.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGSU YAODA INTELLIGENT MFG TECH CO LTD
- Filing Date
- 2025-08-15
- Publication Date
- 2026-07-14
AI Technical Summary
The existing rear wheel arch outer panels are insufficient in terms of structural strength, durability, shock absorption performance and ease of maintenance, making it difficult to meet the requirements of modern vehicles for long service life, high reliability and low noise operation.
It adopts a multi-layer composite structure design, including a main body layer, an inner support frame, a double-layer vibration isolation buffer layer and a weather-resistant protective layer. Combined with the positioning ears and elastic strips of the flexible components, it forms a flexible suspension support that absorbs and attenuates vibration and impact, thereby improving rigidity and durability.
It significantly improves the durability, fatigue resistance, and comfort of the rear wheel arch outer panel, reduces noise, and enables quick assembly, disassembly, and maintenance, thus enhancing convenience.
Smart Images

Figure CN224491235U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of wheel cover technology, specifically a high-durability rear wheel cover outer plate. Background Technology
[0002] Currently, rear wheel arch covers, as important components protecting the rear wheels and suspension system, are widely used in passenger cars, light trucks, and off-road vehicles. Their main function is to prevent mud, moisture, and external impacts from directly affecting the wheels and chassis components, thereby extending the vehicle's service life. In existing technologies, rear wheel arch covers are mostly made of a single layer of plastic or thin-walled metal, integrally molded and directly fixed to the vehicle body by bolts or clips.
[0003] In existing structures, typical rear wheel arch outer panels usually have the following shortcomings:
[0004] Insufficient structural strength and durability: Single-layer plastic parts are prone to cracking or deformation due to stones thrown by wheels or road impacts during long-term driving, while thin-walled metal parts are prone to fatigue damage when subjected to continuous vibration, making it difficult to meet the requirements of long-term use.
[0005] Poor shock absorption performance: Traditional rear wheel arch outer panels are mostly rigidly installed and lack effective flexible buffer structures. Vibrations generated during vehicle operation will be directly transmitted to the outer panels, resulting in increased noise and structural loosening, and even the risk of falling off.
[0006] In summary, existing rear wheel arch panels have significant shortcomings in terms of durability, impact resistance, vibration damping performance, and ease of maintenance, making it difficult to meet the requirements of modern vehicles for long service life, high reliability, and low noise operation. Therefore, there is an urgent need for a structurally stable, highly durable rear wheel arch panel with multi-layered cushioning and flexible suspension capabilities to solve the aforementioned technical problems. Utility Model Content
[0007] This utility model aims to solve one of the technical problems existing in the prior art or related technologies.
[0008] Therefore, the technical solution adopted by this utility model is: a high-durability rear wheel cover outer plate, including a wheel cover body, wherein the surface of the wheel cover body is provided with lugs;
[0009] The wheel cover body is composed of a body layer, an inner support frame, a double-layer vibration isolation buffer layer and a weather-resistant protective layer in sequence.
[0010] The flexible component is installed at the lug. The flexible component includes two sets of positioning lugs and elastic strips. The two sets of positioning lugs are connected by S-shaped elastic strips on both sides of the surface in an alternating arrangement. The positioning lugs are movably connected to the lug to achieve shock-resistant support and flexible buffering for the wheel cover body.
[0011] Specifically, this solution can effectively absorb vibrations and impacts from the wheels during vehicle operation, improving the overall durability and fatigue resistance of the wheel arches.
[0012] In a preferred example, the body layer is a reinforced polymer composite material layer used to provide basic shape structure and impact resistance.
[0013] The technical advantage is that the body layer not only ensures the shape stability of the wheel cover body, but also withstands daily use loads such as external stone impacts and mud and sand impacts, thus extending its service life.
[0014] In a preferred example, the inner support frame is an integrally molded structure of metal or high-strength fiber material, and is embedded and connected with the body layer to improve the overall rigidity and durability of the wheel cover body.
[0015] The technical effect is that the internal support frame significantly enhances the overall load-bearing capacity and structural stability of the wheel arch body, preventing deformation or loosening of the wheel arch when driving at high speeds or on bumpy roads.
[0016] In a preferred embodiment, the double-layer vibration isolation buffer layer is arranged between the inner support frame and the body layer, and adopts a composite structure of porous elastic material and damping adhesive to absorb vibrations and impacts generated during vehicle operation.
[0017] The technical effect is that this vibration damping structure can effectively attenuate the periodic impact caused by the high-speed rotation of the tires, reduce the resonance between the vehicle body and the wheel arches, and improve the overall vehicle comfort and wheel arch durability.
[0018] In a preferred example, the weather-resistant protective layer is a UV-resistant and corrosion-resistant coating or film layer, used to improve the waterproof, corrosion-resistant and anti-aging properties of the wheel cover body.
[0019] The technical advantage lies in the fact that the wheel covers can maintain stable performance even after long-term use in rain, snow, sun exposure, and muddy conditions, significantly extending their service life.
[0020] In a preferred example, the lugs are symmetrically arranged along the outer edge of the wheel cover body, and the wheel cover body can be quickly assembled and disassembled and flexibly suspended by the lugs and the positioning lugs.
[0021] The technical advantage lies in the fact that the connecting lugs, in conjunction with the positioning lugs, not only enable the quick installation and removal of wheel covers, but also provide flexible suspension support for the wheel cover body, reducing structural impact during high-speed driving.
[0022] In a preferred example, the elastic strip is an S-shaped low-carbon steel sheet structure and is detachably mounted to the positioning ear to provide auxiliary cushioning support during vehicle vibration or impact.
[0023] The technical effect is that the S-shaped elastic strips undergo elastic deformation after being subjected to force, achieving multi-directional flexible buffering, which, together with the double-layer vibration isolation buffer layer, further enhances the seismic durability of the wheel cover body.
[0024] The beneficial effects achieved by this utility model are as follows:
[0025] 1. In this utility model, the wheel cover body adopts a multi-layer structure design consisting of a main body layer, an inner support frame, a double-layer vibration isolation buffer layer, and a weather-resistant protective layer, which can effectively absorb and attenuate vibration and impact during vehicle operation, while significantly improving the overall rigidity, impact resistance, and fatigue resistance of the wheel cover, thereby extending the service life of the rear wheel cover outer plate.
[0026] 2. In this utility model, the lugs and flexible components work together to form a flexible suspension support. The flexible components are composed of positioning lugs and S-shaped elastic strips arranged alternately, which can provide multi-directional buffering and shock-resistant support when the vehicle vibrates or is impacted, and realize the quick assembly, disassembly and maintenance of the wheel cover body, thereby improving the convenience of installation and the seismic stability of the structure. Attached Figure Description
[0027] Figure 1 This is a schematic diagram of the overall structure of one embodiment of the present utility model;
[0028] Figure 2 This is a schematic diagram of the surface structure of the wheel cover body according to an embodiment of the present invention;
[0029] Figure 3 This is an exploded view of the flexible component according to an embodiment of the present invention;
[0030] Figure 4 This is a partial cross-sectional structural diagram of the wheel cover body according to an embodiment of the present invention.
[0031] Figure label:
[0032] 100. Wheel cover body; 110. Lug; 101. Body layer; 102. Inner support frame; 103. Double-layer vibration isolation buffer layer; 104. Weather-resistant protective layer;
[0033] 200. Flexible component; 210. Positioning ear; 220. Elastic strip. Detailed Implementation
[0034] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features of the present utility model can be combined with each other.
[0035] It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this invention.
[0036] The following describes, with reference to the accompanying drawings, some embodiments of the present invention, providing a high-durability rear wheel arch outer panel.
[0037] Combination Figures 1-4 As shown, the present invention provides a high-durability rear wheel cover outer panel, including a wheel cover body 100, a lug 110 and a flexible component 200. The overall structure can effectively improve the durability and impact resistance of the vehicle's rear wheel cover during long-term use.
[0038] The wheel cover body 100 is the main part of the entire rear wheel cover outer panel, and multiple lugs 110 are fixed on its surface for flexible connection with the vehicle frame or wheel cover support structure.
[0039] The wheel arch body 100 is composed of the following multi-layer structure in sequence: Body layer 101: made of reinforced polymer composite material, prepared by molding or thermoplastic molding, which can provide basic shape support, impact resistance and fatigue strength of the rear wheel arch;
[0040] Inner support frame 102: Located inside the wheel cover body 100, preferably an integrally formed structure of metal or high-strength fiber material, which can be combined with the body layer 101 by interlocking or gluing to enhance the overall rigidity and structural stability.
[0041] Double-layer vibration isolation buffer layer 103: It is set between the inner support frame 102 and the body layer 101, and is composed of a porous elastic material layer and a damping rubber layer. It can effectively absorb and attenuate the vibration and impact from the wheel during vehicle operation.
[0042] Weather-resistant protective layer 104: Covers the outer surface of the body layer 101, and adopts a UV-resistant and corrosion-resistant coating or polymer film layer, which helps to improve the waterproof, corrosion-resistant and anti-aging capabilities of the wheel cover body 100.
[0043] like Figure 1 and Figure 3 As shown, the flexible assembly 200 is mounted at the lug 110 to provide flexible cushioning and shock-absorbing support for the wheel arch body 100. The flexible assembly 200 includes:
[0044] Two sets of positioning ears 210: used to mate with the ear 110 on the surface of the vehicle body and the surface of the wheel arch body 100, respectively;
[0045] Elastic strip 220: This is an S-shaped low-carbon steel strip structure, installed on both sides of the two sets of positioning ears 210, and connected to the two sets of positioning ears 210 in an alternating arrangement to form a flexible support structure. The elastic strip 220 can generate elastic deformation when subjected to vehicle vibration or impact, achieving multi-directional buffering.
[0046] The positioning ear 210, through its movement in conjunction with the connecting ear 110, enables the wheel arch body 100 to be quickly installed and removed and to be flexibly suspended. At the same time, it can reduce the rigid impact between the wheel arch body 100 and the vehicle body during vehicle operation.
[0047] Working principle and usage
[0048] When this invention is installed at the rear wheel position of a vehicle, the wheel cover body 100 is connected to the flexible component 200 via the lug 110, and a flexible suspension support structure is formed by the positioning lug 210 and the elastic strip 220. Vibrations and impacts generated during vehicle operation are first absorbed by the elastic strip 220, and further attenuated by the double-layer vibration damping layer 103, thereby effectively protecting the wheel cover body 100 and its outer surface weather-resistant protective layer 104.
[0049] During vehicle maintenance or wheel cover replacement, operators can quickly disassemble the wheel cover body 100 by loosening the positioning ears 210 of the flexible assembly 200, which significantly improves the convenience of assembly and disassembly and maintenance efficiency.
[0050] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0051] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.
Claims
1. A high-durability rear wheel arch cover outer panel, characterized in that, include: Wheel cover body (100), the surface of which is provided with lugs (110); The wheel cover body (100) is composed of a body layer (101), an inner support frame (102), a double-layer vibration isolation buffer layer (103), and a weather-resistant protective layer (104) in sequence; The flexible component (200) is installed at the lug (110). The flexible component (200) includes two sets of positioning lugs (210) and elastic strips (220). The two sets of positioning lugs (210) are connected by S-shaped elastic strips (220) on both sides of the surface in an alternating arrangement. The positioning lugs (210) are movably connected to the lug (110) to achieve shock-resistant support and flexible buffering for the wheel cover body (100).
2. The high-durability rear wheel arch cover outer plate according to claim 1, characterized in that, The body layer (101) is a reinforced polymer composite material layer used to provide basic shape structure and impact resistance.
3. The high-durability rear wheel arch outer panel according to claim 1, characterized in that, The inner support frame (102) is an integrally formed structure of metal or high-strength fiber material, and is fitted and connected with the body layer (101) to improve the overall rigidity and durability of the wheel cover body (100).
4. The high-durability rear wheel arch outer panel according to claim 1, characterized in that, The double-layer vibration isolation buffer layer (103) is arranged between the inner support frame (102) and the body layer (101), and adopts a composite structure of porous elastic material and damping adhesive to absorb the vibration and impact generated during vehicle operation.
5. A high-durability rear wheel arch cover outer plate according to claim 1, characterized in that, The weather-resistant protective layer (104) is a coating or film layer that is resistant to ultraviolet rays and corrosion, and is used to improve the waterproof, anti-corrosion and anti-aging performance of the wheel cover body (100).
6. The high-durability rear wheel arch outer panel according to claim 1, characterized in that, The lugs (110) are symmetrically arranged along the outer edge of the wheel cover body (100), and the wheel cover body (100) can be quickly assembled and disassembled and flexibly suspended by the lugs (110) and the positioning lugs (210).
7. A high-durability rear wheel arch cover outer plate according to claim 1, characterized in that, The elastic strip (220) is an S-shaped low-carbon steel sheet structure and is detachably installed with the positioning ear (210) to provide auxiliary buffer support when the vehicle vibrates or is impacted.