Front mudguard
By designing a combined structure of fixed plate, moving plate and clamping plate, the mudguard length can be quickly adjusted and stably fixed by using the traction force of bolts and corner plates. This solves the problem that traditional mudguards cannot be adapted to vehicles with different wheel diameters, ensuring that the mud and water blocking effect is maximized and the protection area is increased.
Patent Information
- Application Number
- CN202520757055.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-21
- Publication Date
- 2026-02-24
- Estimated Expiration
- 2035-04-21
AI Technical Summary
Traditional fixed mudguards are not adjustable in length, making them unsuitable for vehicles with different wheel diameters. They also cannot be extended in complex road conditions. Existing adjustable mudguards have complex structures, are cumbersome to assemble and adjust, and have poor connection stability.
A front fender was designed, which uses a combination structure of fixed plate, moving plate and clamping plate. The moving plate and clamping plate can slide and bend elastically by using the traction force of bolts and corner plates. Combined with the interference fit of the fitting section, it can achieve dual fixation of mechanical self-locking and elastic pressing, and is suitable for wheel hub sizes of different vehicle models.
It enables rapid adjustment and stable fixing of mudguard length, ensuring maximum mud and water blocking effect, adapting to different road conditions, increasing the protection area, and maintaining the vehicle's compactness and aesthetics on urban roads.
Smart Images

Figure CN223934810U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of automotive parts technology, specifically to a front mudguard. Background Technology
[0002] With the diversification of transportation, mudguards, as an important protective component of vehicles, have increasingly higher requirements for adaptability. Traditional fixed mudguards, whose length is not adjustable, cannot be adapted to vehicles with different wheel diameters. In complex road conditions, they cannot be extended to maximize mud and water blocking effect and increase the protective area. Existing adjustable mudguards mostly adopt a segmented plug-in structure, which has problems such as complex structure, cumbersome assembly and adjustment, poor connection stability after adjustment, and high risk of lateral displacement. Utility Model Content
[0003] I. Technical problems to be solved
[0004] The purpose of this utility model is to provide a front fender.
[0005] II. Technical Solution
[0006] This utility model is achieved through the following technical solution:
[0007] This utility model proposes a front fender, comprising:
[0008] A fixed plate, which extends downward in an arc shape from the middle to both sides, and extends inward and upward at its side edges to form a blocking edge;
[0009] A movable plate is enclosed inside a fixed plate, and its outer surface is in close contact with the inner surface of the fixed plate. The movable plate extends inward and upward at its side edge to form a positioning edge supported by a blocking edge.
[0010] A clamping plate is enclosed on the outside of the fixed plate, and its inner surface is in close contact with the outer surface of the fixed plate. The moving plate extends inward and upward at its side edge to form a limiting edge that supports and blocks the edge.
[0011] Two corner plates are symmetrically fixed on both sides of the upper surface of the clamp, and the two corner plates are arranged in parallel and spaced apart. Through holes are coaxially opened on the opposite surfaces of the two corner plates.
[0012] Both the movable plate and the clamping plate can slide relative to the fixed plate along the length direction; and when the bolt passes through the through hole and the nut is tightened, the two corner plates move closer to each other and apply opposing traction forces to both sides of the clamping plate, so that the fixed plate and the movable plate are elastically bent and fixed in opposite directions.
[0013] Furthermore, the middle portion of the fixed plate, the moving plate, and the clamping plate each has an upwardly protruding, V-shaped first fitting section, a second fitting section, and a third fitting section, wherein the second fitting section is fitted inside the first fitting section, and the first fitting section is fitted inside the third fitting section.
[0014] Furthermore, the two corner plates are respectively fixed to both sides of the third fitting section.
[0015] Furthermore, the sides of the fixed plate, the moving plate, and the clamping plate are respectively provided with a first concave ridge, a second concave ridge, and a third concave ridge along their length direction, and the third concave ridge, the first concave ridge, and the second concave ridge are sequentially fitted from the outside to the inside.
[0016] Furthermore, the blocking edge, positioning edge, and limiting edge are arc-shaped or bent.
[0017] Furthermore, the fixed plate, the moving plate, and the clamping plate extend in an arc shape along their length.
[0018] Furthermore, the cross-section of the moving plate gradually expands from front to back in the length direction, while the cross-section of the fixed plate gradually expands from back to front in the length direction.
[0019] III. Beneficial Effects
[0020] Compared with the prior art, this utility model has the following advantages:
[0021] This invention allows for quick assembly and adjustment of the mudguard length. First, loosen the corner plate bolts and pull the moving plate along its length. Once the target length is reached, tighten the bolts. The reduced gap between the corner plates generates traction force in the clamping plates. This force is transmitted to the moving plate through the third interlocking section, forcing the fixed plate to bend elastically on both sides. The expanding section of the moving plate and the contracting section of the fixed plate form a wedge-shaped lock, while each interlocking section enters an interference fit, achieving both mechanical self-locking and elastic compression for dual fixation. It can adapt to different vehicle wheel sizes, and the coverage area can be adjusted by sliding the moving plate. In complex road conditions, the mudguard can be extended to maximize mud and water blocking effect and increase the protection area. In urban roads, it can be shortened to optimize vehicle compactness and maintain aesthetics. Attached Figure Description
[0022] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;
[0023] Figure 2 yes Figure 1 Explosion-decomposition diagram;
[0024] Figure 3 yes Figure 1 A schematic diagram of the three-dimensional structure from an upward perspective;
[0025] Figure 4This is a schematic diagram of the connection between the clamping plate and the corner plate;
[0026] Figure 5 This is a schematic diagram of the structure when two corner plates are tightened by bolts and nuts;
[0027] Figure 6 This is a structural diagram illustrating one implementation of a blocking edge, a positioning edge, and a limiting edge.
[0028] 1. Fixed plate; 11. Blocking edge; 12. First fitting section; 13. First concave edge; 2. Moving plate; 21. Positioning edge; 22. Second fitting section; 23. Second concave edge; 3. Clamping plate; 31. Limiting edge; 32. Third fitting section; 33. Third concave edge; 4. Corner plate; 41. Through hole. Detailed Implementation
[0029] 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 the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.
[0030] A front fender, please refer to Figure 1-4 The system includes a fixed plate 1, a movable plate 2, a clamping plate 3, and corner plates 4. The fixed plate 1 extends downward in an arc shape from the center to both sides, and extends inward and upward at its side edge to form a blocking edge 11. The movable plate 2 is enclosed inside the fixed plate 1, and its outer surface is in close contact with the inner surface of the fixed plate 1. The movable plate 2 extends inward and upward at its side edge to form a positioning edge 21 supported by the blocking edge 11. The clamping plate 3 is enclosed outside the fixed plate 1, and its inner surface is in close contact with the outer surface of the fixed plate 1. The clamping plate 3 extends inward and upward at its side edge to form a limiting edge 31 supporting the blocking edge 11. Two corner plates 4 are symmetrically fixed on both sides of the upper surface of the clamping plate 3. The upper part of the corner plates 4 is fixed to the vehicle body structure. The two corner plates 4 are arranged in parallel and spaced apart. Through holes 41 are coaxially opened on the opposite surfaces of the two corner plates 4. By passing bolts through the through holes 41 and tightening screws, the two corner plates 4 can be pulled together to eliminate the gap.
[0031] Both the movable plate 2 and the clamping plate 3 can slide relative to the fixed plate 1 along the length direction, and the movable plate 2 and the clamping plate 3 can undergo slight elastic deformation between their two sides of the arc shape.
[0032] like Figure 5 As shown, when the bolt passes through the through hole 41 and the nut is tightened, the two corner plates 4 move closer to each other; and apply opposing traction forces to both sides of the clamping plate 3, so that the connection between the two corner plates 4 and the clamping plate 3 is pulled inward, so that the clamping plate 3 drives the fixed plate 1 and the moving plate 2 to be elastically bent and fixed in opposite directions.
[0033] The fixed plate 1, the movable plate 2, and the clamping plate 3 each have an upwardly protruding, V-shaped first fitting section 12, a second fitting section 22, and a third fitting section 32 in their middle portions. The second fitting section 22 is fitted inside the first fitting section 12, and the first fitting section 12 is fitted inside the third fitting section 32. The first fitting section 12, the second fitting section 22, and the third fitting section 32 form a limiting fit, restricting the fixed plate 1, the movable plate 2, and the clamping plate 3 to slide only along their length direction, and improving the overall structural strength. Two corner plates 4 are fixed to both sides of the structurally stronger third fitting section 32, ensuring that the locking force is evenly transmitted to the entire structure.
[0034] The sides of the fixed plate 1, the moving plate 2, and the clamping plate 3 are respectively provided with a first concave ridge 13, a second concave ridge 23, and a third concave ridge 33 along their length direction. The third concave ridge 33, the first concave ridge 13, and the second concave ridge 23 are sequentially fitted from the outside to the inside to form a convex ridge guide structure, which positions the sliding direction of the fixed plate 1, the moving plate 2, and the clamping plate 3, improves the stability of the telescopic moving plate 2, adjusts the length of the mudguard, and avoids lateral deviation.
[0035] The blocking edge 11, positioning edge 21, and limiting edge 31 are arc-shaped. The blocking edge 11 supports the positioning edge 21, and the limiting edge 31 supports the blocking edge 11, improving stability during use, or as... Figure 6 Another implementation of the bent edge is shown.
[0036] The fixed plate 1, movable plate 2, and clamping plate 3 extend in an arc shape along their length, allowing the movable plate 2 to slide smoothly within the fixed plate 1, thus changing the overall length of the mudguard. This design allows for adaptation to different vehicle wheel sizes. The coverage area can be adjusted by sliding the movable plate 2. In complex road conditions (such as muddy or gravel roads), the mudguard can be extended to maximize mud and water blocking effect and increase the protective area. In urban areas, the mudguard can be shortened to optimize vehicle compactness and maintain an aesthetically pleasing appearance.
[0037] The cross-section of the moving plate 2 gradually expands from front to back along its length, while the cross-section of the fixed plate 1 gradually expands from back to front along its length. This ensures that the moving plate 2 can be gradually locked into the fixed plate 1 when it slides to the frontmost side; when the clamping plate 3 is installed, it slides to the front end of the moving plate 2 and can be gradually locked into the outside of the fixed plate 1.
[0038] When adjusting the mudguard length, first loosen the angle plate bolts and pull the moving plate 2 along the length direction. After reaching the target length, tighten the bolts. The gap between the angle plates 4 decreases, causing the clamping plate 3 to generate traction force. This force is transmitted to the moving plate 2 through the third fitting section 32, forcing the fixed plate 1 to bend elastically on both sides. The gradually expanding section of the moving plate 2 and the gradually contracting section of the fixed plate 1 form a wedge-shaped lock. At the same time, each fitting section enters an interference fit state, achieving dual fixation of mechanical self-locking and elastic compression.
[0039] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the concept and scope of the present invention. Various modifications and improvements made to the technical solutions of the present invention by those skilled in the art without departing from the design concept of the present invention should fall within the protection scope of the present invention. The technical content for which protection is sought in the present invention has been fully described in the claims.
Claims
1. A front fender, characterized in that, include: A fixed plate, which extends downward in an arc shape from the middle to both sides, and extends inward and upward at its side edges to form a blocking edge; A movable plate is enclosed inside a fixed plate, and its outer surface is in close contact with the inner surface of the fixed plate. The movable plate extends inward and upward at its side edge to form a positioning edge supported by a blocking edge. A clamping plate is enclosed on the outside of the fixed plate, and its inner surface is in close contact with the outer surface of the fixed plate. The clamping plate extends inward and upward at its side edge to form a limiting edge that supports and blocks the edge. Two corner plates are symmetrically fixed on both sides of the upper surface of the clamp, and the two corner plates are arranged in parallel and spaced apart. Through holes are coaxially opened on the opposite surfaces of the two corner plates. Both the movable plate and the clamping plate can slide relative to the fixed plate along the length direction; and when the bolt passes through the through hole and the nut is tightened, the two corner plates move closer to each other and apply opposing traction forces to both sides of the clamping plate, so that the fixed plate and the movable plate are elastically bent and fixed in opposite directions.
2. A front mudguard according to claim 1, characterized in that, The fixed plate, the moving plate, and the clamping plate each have an upwardly protruding, V-shaped first fitting section, a second fitting section, and a third fitting section in their middle portions. The second fitting section is fitted inside the first fitting section, and the first fitting section is fitted inside the third fitting section.
3. A front mudguard according to claim 2, characterized in that, The two corner plates are respectively fixed to both sides of the third fitting section.
4. A front fender according to any one of claims 1-3, characterized in that, The fixed plate, the moving plate, and the clamping plate are respectively provided with a first concave ridge, a second concave ridge, and a third concave ridge along their length direction, and the third concave ridge, the first concave ridge, and the second concave ridge are sequentially fitted from the outside to the inside.
5. A front mudguard according to claim 1, characterized in that, The blocking edge, positioning edge, and limiting edge are arc-shaped or bent.
6. A front mudguard according to claim 1, characterized in that, The fixed plate, moving plate, and clamping plate extend in an arc shape along their length.
7. A front fender according to claim 1 or 6, characterized in that, The moving plate has a cross-section that gradually expands from front to back along its length, while the fixed plate has a cross-section that gradually expands from back to front along its length.