An adjustable radius automobile mud flap

CN224766855UActive Publication Date: 2026-09-18CHONGQING BOBANG AUTO PARTS
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Patent Information

Application Number
CN202522485461.9
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-11-24
Publication Date
2026-09-18
Estimated Expiration
2035-11-24

AI Technical Summary

Technical Problem

这种固定结构的挡泥板存在明显不足:一方面,对于轮拱弧度存在差异的不同车型,需要设计不同规格的挡泥板,增加了生产制造的成本和复杂度;另一方面,当车辆行驶在不同路况或不同行驶速度下,固定弧度的挡泥板难以完全适配泥水的飞溅轨迹,导致挡泥效果不佳,可能使泥水溅到车身或其他部位,影响车辆的清洁和使用寿命,也降低了对行人的防护效果的技术问题

Benefits of technology

[0011] By using the sliding fit between the movable arc plate connecting convex strip and the movable arc plate mounting groove, and the fit between the adjusting bolt and the movable arc plate connecting hole, the curvature of the mudguard can be flexibly adjusted to adapt to the wheel arch curvature of different vehicle models and the mud and water splash protection requirements under different driving conditions. There is no need to design mudguards separately for different vehicle models, which reduces production adaptation costs.

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Abstract

This utility model relates to the field of automotive parts technology, and specifically discloses an adjustable arc-shaped automotive mudguard, including a mudguard body and a movable arc plate. The mudguard body has a fixing bolt through hole, an adjusting bolt through hole, and a movable arc plate mounting groove. The fixing bolt passes through the fixing bolt through hole to fix the body to the vehicle, ensuring stable installation. The movable arc plate has a movable arc plate connecting hole and a movable arc plate connecting protrusion. The protrusion slides with the mounting groove to provide adjustment guidance. The adjusting bolt passes through the adjusting bolt through hole and engages with the connecting hole, realizing a detachable connection between the two and locking the position of the movable arc plate. The layout of the adjusting bolt through hole, connecting hole, protrusion, and mounting groove is reasonable, allowing the movable arc plate to be smoothly and accurately adjusted in arc, effectively blocking mud and water splashes, improving the mudguard's versatility and protective effect, and featuring a simple structure and strong practicality.
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Description

Technical Field

[0001] This utility model relates to the field of automotive parts technology, and in particular to an adjustable curvature automotive mudguard. Background Technology

[0002] In the automotive industry, mudguards are crucial components used to block mud, water, stones, and other debris splashed up by the wheels during driving, protecting vehicles and pedestrians. Traditional automotive mudguards are mostly of a fixed curvature, meaning their curvature is pre-designed and cannot be adjusted to suit the wheel arch curvature of different car models or the mud and water splashing patterns under varying driving conditions. This fixed structure has significant shortcomings: firstly, different mudguard specifications need to be designed for different car models with varying wheel arch curvatures, increasing manufacturing costs and complexity; secondly, when vehicles are traveling on different road conditions or at different speeds, the fixed curvature of the mudguard cannot perfectly adapt to the splashing trajectory of mud and water, resulting in poor mud-blocking effectiveness. This can allow mud and water to splash onto the car body or other parts, affecting vehicle cleanliness and lifespan, and also reducing pedestrian protection. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides an adjustable curvature car mudguard, solving the problem that traditional car mudguards mostly have a fixed curvature structure. The curvature is pre-designed and cannot be adjusted according to the wheel arch curvature of different car models or the mud and water splashing under different driving conditions. This fixed-curvature mudguard has significant drawbacks: firstly, different specifications of mudguards need to be designed for different car models with varying wheel arch curvatures, increasing manufacturing costs and complexity; secondly, when the vehicle is traveling under different road conditions or at different speeds, the fixed curvature mudguard cannot fully adapt to the mud and water splashing trajectory, resulting in poor mud-blocking effect. This may allow mud and water to splash onto the car body or other parts, affecting the vehicle's cleanliness and lifespan, and also reducing the protection for pedestrians.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] An adjustable curvature car mudguard includes a mudguard body with a fixing bolt through hole. The fixing bolt passes through the fixing bolt through hole to fix the mudguard body to the car, achieving a stable installation of the mudguard body. The mudguard body also has an adjustment bolt through hole, through which an adjustment bolt connects to a movable arc plate. The movable arc plate has a movable arc plate connecting hole and a movable arc plate connecting protrusion, and the mudguard body has a movable arc plate mounting groove. The movable arc plate connecting protrusion slides into the movable arc plate mounting groove to adjust the curvature, and the adjustment bolt engages with the movable arc plate connecting hole to fix the position of the movable arc plate, thereby achieving adjustable mudguard curvature to adapt to the wheel arch curvature of different car models and the mud and water splash protection requirements under different driving conditions.

[0006] Preferably, the fixing bolts pass through the fixing bolt holes to firmly fix the mudguard body to the car, ensuring the stability of the mudguard body installation.

[0007] Preferably, the adjusting bolt passes through the adjusting bolt through hole and connects to the movable arc plate, providing support for the connection and position fixation of the movable arc plate; the adjusting bolt passes through the connecting hole of the movable arc plate to connect the movable arc plate and the mudguard body, further strengthening the connection stability between the two and ensuring the structural reliability of the mudguard during use; the adjusting bolt through hole is located at the side connection structure of the mudguard body, which facilitates the installation and operation of the adjusting bolt and optimizes the convenience of arc adjustment.

[0008] Preferably, the movable arc plate connecting protrusion is provided on the movable arc plate, and the movable arc plate mounting groove is provided on the mudguard body. The movable arc plate connecting protrusion and the movable arc plate mounting groove slide together, so that the arc of the movable arc plate can be smoothly adjusted and the adaptability of the mudguard is improved. The movable arc plate connecting hole is provided on the movable arc plate and cooperates with the adjusting bolt to effectively fix the position of the movable arc plate and ensure that the arc after adjustment remains stable.

[0009] Preferably, the connecting hole of the movable arc plate is located at the side connecting structure of the movable arc plate, the connecting ridge of the movable arc plate is located at the edge of the movable arc plate, and the mounting groove of the movable arc plate is located at the edge mating part of the mudguard body. The reasonable layout of the positions of each component makes the arc adjustment process efficient and precise, and improves the overall mud-blocking effect of the mudguard.

[0010] Compared with the prior art, the present invention has the following beneficial effects:

[0011] By using the sliding fit between the movable arc plate connecting convex strip and the movable arc plate mounting groove, and the fit between the adjusting bolt and the movable arc plate connecting hole, the curvature of the mudguard can be flexibly adjusted to adapt to the wheel arch curvature of different vehicle models and the mud and water splash protection requirements under different driving conditions. There is no need to design mudguards separately for different vehicle models, which reduces production adaptation costs.

[0012] The fixing bolts pass through the fixing bolt holes to securely install the mudguard body onto the car. The adjusting bolts pass through the adjusting bolt holes and work with the movable arc plate connecting holes to fix the position of the movable arc plate. The multiple connection structures ensure the installation stability and structural reliability of the mudguard during use, making it less prone to loosening or falling off.

[0013] The components are rationally positioned, and the sliding fit and bolt connection are simple and easy to operate during the curvature adjustment process, which makes it easy for users to quickly adjust the curvature of the mudguard according to actual needs, thus improving the practicality and ease of use of the mudguard. Attached Figure Description

[0014] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings.

[0015] Figure 1 This is an overall structural diagram of the present invention;

[0016] Figure 2 This is a structural diagram of the movable arc plate connecting protrusion in this utility model;

[0017] Figure 3 This is a structural diagram of the mudguard body in this utility model;

[0018] Figure 4 This is a structural diagram of the movable arc plate in this utility model.

[0019] Legend: 1. Mudguard body; 2. Fixing bolt; 3. Adjusting bolt; 4. Connecting hole for movable arc plate; 5. Movable arc plate; 6. Connecting protrusion for movable arc plate; 7. Mounting groove for movable arc plate; 8. Through hole for fixing bolt; 9. Through hole for adjusting bolt. Detailed Implementation

[0020] This application provides an adjustable curvature car mudguard, effectively solving the problem that traditional car mudguards mostly have a fixed curvature structure. The curvature is pre-designed and cannot be adjusted according to the wheel arch curvature of different car models or the mud and water splashing under different driving conditions. This fixed-curvature mudguard has significant shortcomings: firstly, different specifications of mudguards need to be designed for different car models with varying wheel arch curvatures, increasing manufacturing costs and complexity; secondly, when the vehicle is traveling under different road conditions or at different speeds, the fixed curvature mudguard cannot fully adapt to the mud and water splashing trajectory, resulting in poor mud-blocking effect. This may allow mud and water to splash onto the car body or other parts, affecting the vehicle's cleanliness and service life, and also reducing the protection for pedestrians.

[0021] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the technical solution in this application effectively solves the problem that traditional car mudguards are mostly fixed-curvature structures, whose curvature is pre-designed and cannot be adjusted according to the wheel arch curvature of different car models or the mud and water splashing under different driving conditions. This fixed-curvature mudguard has significant shortcomings: firstly, different specifications of mudguards need to be designed for different car models with varying wheel arch curvatures, increasing manufacturing costs and complexity; secondly, when the vehicle is traveling under different road conditions or at different speeds, the fixed-curvature mudguard cannot fully adapt to the mud and water splashing trajectory, resulting in poor mud-blocking effect. This may cause mud and water to splash onto the car body or other parts, affecting the vehicle's cleanliness and service life, and also reducing the protection effect for pedestrians. The overall approach is as follows:

[0022] To address the problems existing in the prior art, this utility model provides an adjustable arc-shaped car mudguard, including a mudguard body 1 and a movable arc plate 5. The mudguard body 1 serves as the core load-bearing structure, undertaking the basic mud-blocking protection function and providing an installation reference for other components. A fixing bolt through hole 8 on the body provides a passage for fixing bolts 2 to pass through, allowing the fixing bolts 2 to pass through the through hole and securely fix the mudguard body 1 to the car, thus limiting the displacement of the body and ensuring installation stability. The mudguard body 1 also has an adjusting bolt through hole 9 and a movable arc plate mounting groove 7. The adjusting bolt through hole 9 provides space for the adjusting bolts 3 to pass through and move, allowing the adjusting bolts 3 to connect with the movable arc plate after passing through the through hole. The movable arc plate connecting hole 4 on the movable arc plate 5 not only enables the detachable connection between the mudguard body 1 and the movable arc plate 5, but also locks and fixes the position of the movable arc plate 5 after adjustment to prevent the arc from shifting. As an adjustable protective extension structure, the movable arc plate 5 slides with the movable arc plate connecting protrusion 6 at its edge and the movable arc plate mounting groove 7 at the edge of the mudguard body 1 to obtain a smooth and precise guide trajectory for adjusting the arc. The movable arc plate connecting hole 4 provides a locking fulcrum for the adjusting bolt 3, strengthening the connection stability between the two. Ultimately, the arc of the mudguard is flexibly adjustable to adapt to the wheel arch arc of different vehicle models and the mud and water splash protection needs of different driving conditions.

[0023] Working principle: The mudguard body 1 is rigidly connected to the vehicle via fixing bolts 2. The fixing bolts 2 pass through the fixing bolt holes 8 on the mudguard body 1, firmly locking the mudguard body 1 in the designated installation position on the vehicle. The purpose of this step is to provide a stable installation base for the mudguard, ensuring that the mudguard does not shift as a whole during vehicle operation and guaranteeing the basic mud-blocking function.

[0024] The mudguard's curvature can be flexibly adjusted by adjusting bolt 3, movable arc plate 5, and sliding guide structure. The movable arc plate connecting rib 6 on movable arc plate 5 forms a sliding fit with the movable arc plate mounting groove 7 on mudguard body 1. This structure provides a track-like guide for the curvature adjustment of movable arc plate 5, ensuring that movable arc plate 5 moves only along the preset curvature direction and avoiding deviation or jamming during adjustment.

[0025] The adjusting bolt 3 passes through the adjusting bolt through hole 9 on the mudguard body 1 and is threaded into the movable arc plate connecting hole 4 on the movable arc plate 5. After the movable arc plate 5 is adjusted to the target arc along the sliding guide structure, tightening the adjusting bolt 3 will rigidly lock the position of the movable arc plate 5, ensuring that the adjusted arc remains stable during vehicle operation.

[0026] The mudguard body 1 serves as the basic mudguard structure, directly blocking most of the mud and water splashes. The movable arc plate 5, through its adjustable curvature, can adapt to the different wheel arch curvatures of various vehicle models. Furthermore, it adjusts its curvature to expand or optimize the mudguard coverage area in response to changes in the mud and water splash range under different driving conditions. Together, they form a mudguard system that effectively reduces mud and water pollution to the vehicle body, tires, and the surrounding environment, improving vehicle cleanliness and safety.

[0027] Example 1

[0028] In this embodiment of the adjustable arc-shaped car mudguard, the mudguard body 1 is made of PP engineering plastic or reinforced nylon. Several sets of fixing bolt holes 8 are opened on it corresponding to the car mounting position. Stainless steel or galvanized fixing bolts 2 are passed through these holes to securely lock the mudguard body 1 to the wheel arch of the passenger car, ensuring the stability of the body installation. Several sets of adjusting bolt holes 9 are provided at the side connection structure of the mudguard body 1, and a movable arc plate mounting groove 7 is opened at the edge mating area. The movable arc plate 5 is made of the same material as the body, and its edge is provided with a movable arc plate connecting protrusion 6 and a side connection. The structure is equipped with multiple sets of movable arc plate connection holes 4. During assembly, the movable arc plate connecting protrusion 6 is embedded into the movable arc plate mounting groove 7 to form a sliding fit. After sliding the movable arc plate 5 along the groove to the appropriate position according to the wheel arch curvature of the vehicle model, the adjusting bolt 3 passes through the adjusting bolt through hole 9 and is tightened to fix it with the movable arc plate connection hole 4 to complete the assembly. After testing under conditions such as urban roads, suburban bumpy roads, off-road sections, and high-speed driving, the mudguard body 1 is not loose, the movable arc plate 5 is in a stable position, and the amount of mud and water splashing is reduced compared to when it is not installed. It can effectively adapt to the protection needs of different vehicle models' wheel arches and multiple driving conditions.

[0029] Finally, it should be noted that the above embodiments are merely examples for clearly illustrating the present invention and are not intended to limit the implementation. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. An adjustable radius automotive mud flap, characterized by, Includes a mudguard body (1), the mudguard body (1) is provided with a fixing bolt through hole (8), and the fixing bolt (2) passes through the fixing bolt through hole (8) to fix the mudguard body (1); The mudguard body (1) is also provided with an adjustment bolt through hole (9), and the adjustment bolt (3) passes through the adjustment bolt through hole (9) to connect to the movable arc plate (5). The movable arc plate (5) is provided with a movable arc plate connection hole (4) and a movable arc plate connection protrusion (6), and the mudguard body (1) is provided with a movable arc plate mounting groove (7).

2. An adjustable radius mud flap for a vehicle as defined in claim 1, wherein, The fixing bolt (2) passes through the fixing bolt through hole (8) to fix the mudguard body (1) to the car.

3. An adjustable radius mud flap for a vehicle as defined in claim 1, wherein, The adjusting bolt (3) passes through the adjusting bolt through hole (9) and is connected to the movable arc plate (5).

4. An adjustable radius mud flap for a vehicle as defined in claim 1, wherein, The movable arc plate connecting protrusion (6) is provided on the movable arc plate (5), and the movable arc plate mounting groove (7) is provided on the mudguard body (1). The movable arc plate connecting protrusion (6) and the movable arc plate mounting groove (7) are in sliding fit.

5. An adjustable radius mud flap for a vehicle as defined in claim 1, wherein, The movable arc plate connecting hole (4) is provided on the movable arc plate connecting protrusion (6), and the movable arc plate connecting hole (4) is engaged with the adjusting bolt (3).

6. An adjustable radius mud flap for a vehicle as defined in claim 1, wherein, The adjusting bolt (3) passes through the connecting hole (4) of the movable arc plate and connects the movable arc plate (5) to the mudguard body (1).

7. An adjustable radius mud flap for a vehicle as defined in claim 1 wherein, The adjusting bolt through hole (9) is located at the side connection structure of the mudguard body (1).

8. An adjustable radius mud flap for a vehicle as defined in claim 1, wherein, The movable arc plate connecting hole (4) is located at the side connecting structure of the movable arc plate (5), the movable arc plate connecting protrusion (6) is located at the edge of the movable arc plate (5), and the movable arc plate mounting groove (7) is located at the edge mating part of the mudguard body (1).