A commercial vehicle middle axle mudguard assembly
By using an injection-molded one-piece top cover and a symmetrical structural design, the problems of high production cost and complex installation of the middle axle mudguard assembly for commercial vehicles have been solved, resulting in reduced mold capacity, improved installation efficiency, and rapid drainage.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- HUBEI YUNXIAN SHUANGLONG AUTOMOTIVE PLASTIC CO LTD
- Filing Date
- 2023-05-15
- Publication Date
- 2026-05-12
AI Technical Summary
The existing commercial vehicle axle mudguard assembly has high production costs and complex installation due to its asymmetrical structure. It is also incompatible with both left and right tires, which increases manufacturing costs and the consumption of manpower and resources.
It adopts an injection-molded one-piece top cover design with a symmetrical front and rear planar structure, featuring a concave arc slope and water guide groove. Combined with inner and outer protective plates and a plug-in structure, it achieves reduced mold size and improved installation efficiency.
It reduces the number of production molds, improves installation stability and usage flexibility, enables rapid drainage, reduces installation costs and manpower and material consumption, and enhances safety.
Smart Images

Figure CN116279842B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of commercial vehicle parts, and in particular to a commercial vehicle middle axle mudguard assembly. Background Technology
[0002] In existing technologies, the axle cover of commercial vehicles typically uses two arc-shaped plastic parts, front and rear, connected by multiple mounting components at their joints. This design prevents the axle mudguard assembly from being molded as a single piece, necessitating the design of multiple component molds, significantly increasing manufacturing and installation costs. Furthermore, this existing mudguard is not a mirror-symmetric structure, making it incompatible with both left and right tires, requiring two sets of production molds, greatly wasting manpower and resources, and further increasing manufacturing costs.
[0003] Therefore, there is an authorized announcement number CN111516760B for a mudguard device with multiple mounting components. It is incompatible with the left and right tires of a vehicle. The connection structure is cumbersome and complex. Although the installation is reliable, it cannot save more manufacturing and installation costs. Summary of the Invention
[0004] This invention aims to reduce the production and installation costs of the middle axle mudguard assembly for commercial vehicles, improve its flexibility and adaptability, and ensure superior mud and water blocking performance.
[0005] Therefore, the technical solution of the present invention is as follows: a commercial vehicle mid-axle mudguard assembly, including a mudguard bracket, the mudguard bracket being connected to the vehicle frame; a mudguard is connected to the lower part of the mudguard bracket, the front surface of the mudguard is fastened to the mudguard bracket by a clamp plate, and the rear surface of the mudguard is connected upward to an upper cover plate by a fixing bracket; wherein the upper end of the clamp plate is also connected to the upper cover plate; characterized in that: the upper cover plate is an injection-molded one-piece structure; wherein the upper cover plate is set into a symmetrical structure with the axis of the mudguard as the dividing line, and the front and rear planes form a concave arc slope, forming a first water guide groove in the middle; grooves and openings for docking with the wheel hub caps of automobiles are also provided on the front and rear planes.
[0006] In this invention, since the top cover is an injection-molded one-piece structure, the product can be manufactured with a single mold, saving molds. The installation of a single component also saves labor time. The front and rear planes form a concave arc slope, which allows external water to flow towards the center and drain out through the first water guide channel without water accumulation.
[0007] A further improvement is that multiple cutouts are provided between the front and rear planes of the top cover.
[0008] The openwork design allows accumulated water to flow downwards along the mudguard.
[0009] A further improvement is that: an inner protective plate extends downward from the inner side of the upper cover, and the inner protective plate and the frame form a protective surface; the protective surface also has an opening in conjunction with the mudguard bracket; an outer protective plate extends downward from the outer side of the upper cover, and the outer protective plate forms an inverted triangular structure after extending downward and covers the outer edge of the mudguard.
[0010] The inner skid plate and the frame form a protective surface, while the outer skid plate blocks the outer edge of the mudguard, absorbing and expelling water splashed from the wheels onto the mudguard, and also serving as a splash preventer. In addition, it provides protection for the mudguard, meaning that the outer skid plate can swing redundantly when subjected to external force to prevent accidental damage to the mudguard.
[0011] A further improvement is made in that: a recess is provided on the outer surface of the outer protective plate, and a second water guide groove is formed along the dividing line of the recess, which extends out of the outer protective plate; a protrusion is formed on the inner surface of the outer protective plate corresponding to the recess, and a female buckle is provided downward along the protrusion; both sides of the mudguard are provided with male buckles, and the male buckles cooperate with the female buckles to form a plug-in structure.
[0012] The combination of recesses and protrusions forms a reinforcing component of the outer protective plate, and also leaves space for the female buckle. At this time, the use of the female buckle and the male buckle to fix the mudguard from the side also forms a stable structural state. Furthermore, since the female buckle of the protective plate corresponds to the female buckle, the upper cover can be mirrored on the other side of the vehicle and used directly, without the need to manufacture the other side of the component separately. In other words, in the production process, it can be reduced from the original four components of left front, left rear, right front, and right rear to one component. This design can greatly improve the installation efficiency of the product and save manpower and material resources for installation.
[0013] A further improvement is that the outer surface of the outer protective plate has an inverted triangular recess on its outer surface, which corresponds to an inverted triangular protrusion on the inner surface of the outer protective plate.
[0014] The inverted triangular concave and convex structure provides stability and facilitates drainage, allowing the mudguard assembly to drain water quickly under the impact of mud and rain.
[0015] A further improvement is that the lower edge of the outer protective plate of the top cover is designed with rounded corners.
[0016] The rounded corners prevent sharp edges from cutting people, greatly improving the product's safety.
[0017] A further improvement is that the female buckle on the inner surface of the outer protective plate is a sloped slide rail, at which time the male buckle is fastened under the slope of the female buckle and the gravity of the upper cover plate.
[0018] The slope rails ensure reliable installation of the mudguards, reduce the probability of loosening and slipping, and provide deformation allowance for the side plates of the mudguard assembly of the middle bridge, so that the material will not break under external accidental impact and mud and water erosion. Beneficial effects
[0019] This invention solves the problem of high production costs caused by the asymmetrical structure of traditional commercial vehicle axle mudguard assemblies, reduces the number of molds required during manufacturing, enhances the stability of mudguard installation and reliability during use, and also allows for rapid drainage, maintaining excellent product performance. Attached Figure Description
[0020] Figure 1 This is the front view of the present invention.
[0021] Figure 2 This is the left view of the present invention.
[0022] Figure 3 This is a top view of the present invention.
[0023] Figure 4 This is a rear view of the present invention.
[0024] Figure 5 yes Figure 2 Enlarged diagram of point A.
[0025] Figure 6 yes Figure 3 Enlarged diagram of point B.
[0026] Figure 7 It is the front plane of the mudguard.
[0027] Figure 8 It is the rear plane of the mudguard.
[0028] In the diagram, 1 is the outer protective plate, 2 is the recess, 3 is the second water guide channel, 4 is the rounded corner structure, 5 is the mudguard bracket, 6 is the clamp plate, 7 is the mudguard, 8 is the top cover plate, 9 is the hollow, 10 is the groove, 11 is the opening, 12 is the first water guide channel, 13 is the opening, 14 is the inner protective plate, 15 is the slope slide rail, 16 is the male buckle, 17 is the female buckle, 18 is the fixed bracket, and 19 is the protrusion. Implementation
[0029] The present invention is as follows Figure 1-8 As shown
[0030] A commercial vehicle axle mudguard assembly includes a mudguard bracket 5 connected to the vehicle frame; a mudguard 7 is connected to the lower part of the mudguard bracket 5; the front surface of the mudguard is fastened to the mudguard bracket 5 by a clamp plate 6; and an upper cover plate 8 is connected upward to the rear surface of the mudguard by a fixing bracket 18; the upper end of the clamp plate 6 is also connected to the upper cover plate 8; the upper cover plate 8 is an injection-molded one-piece structure; the upper cover plate 8 is set in a symmetrical structure with the axis of the mudguard 7 as the dividing line, and the front and rear planes form a concave arc slope, with a first water guide groove 12 formed in the middle;
[0031] The front and rear surfaces are also provided with grooves 10 and openings 11 for docking with the wheel hub caps of automobiles.
[0032] In this invention, since the top cover plate is an injection-molded one-piece structure, the product can be manufactured with a single mold, saving molds. The installation of a single component also saves labor time. The front and rear planes form a concave arc slope, which allows external water to flow towards the center and drain out through the first water guide groove 12 without water accumulation.
[0033] Multiple cutouts 9 are provided between the front and rear planes of the top cover plate 8.
[0034] The perforated design 9 allows accumulated water to flow downwards along the mudguard 7.
[0035] The inner side of the upper cover plate 8 extends downward to provide an inner protective plate 14, which forms a protective surface with the frame; the protective surface also has an opening 13 in conjunction with the mudguard bracket 5; the outer side of the upper cover plate 8 extends downward to provide an outer protective plate 1, which forms an inverted triangular structure after extending downward and covers the outer side of the mudguard 8.
[0036] The inner guard plate 14 and the frame form a protective surface. The outer guard plate 1 blocks the outer edge of the mudguard, absorbs and removes water splashed from the wheel on the mudguard, and also plays a role in preventing splashing. At the same time, it also provides protection for the mudguard. That is, the outer guard plate 1 can swing redundantly after being subjected to external force to prevent accidental damage to the mudguard.
[0037] A recess 2 is provided on the outer surface of the outer protective plate 1, and a second water guide groove 3 is formed along the dividing line of the recess 2. The second water guide groove 3 extends out of the outer protective plate. A protrusion 19 is formed on the inner surface of the outer protective plate corresponding to the recess 2, and a female buckle 17 is provided downward along the protrusion 19. Both sides of the mudguard 8 are provided with male buckles 16, and the male buckles 16 cooperate with the female buckles 17 to form a plug-in structure.
[0038] The combination of recess 2 and protrusion 19 forms a reinforcing component of the outer protective plate, and also leaves space for the setting of the female buckle 17. At this time, the combination of male buckle 16 and female buckle 17 fixes the mudguard from the side, forming a stable structural state.
[0039] Furthermore, since the female buckle 17 of the protective plate corresponds to the female buckle 16, the upper cover plate 8 can be mirrored on the other side of the vehicle and used directly without the need to manufacture the other side separately. In other words, in the production process, the original four components of left front, left rear, right front, and right rear can be reduced to one component. This design can greatly improve the installation efficiency of the product and save manpower and resources for installation.
[0040] The outer protective plate 1 has an inverted triangular recess 2 on its outer surface facing inward, which corresponds to an inverted triangular protrusion 19 on the inner surface of the outer protective plate 1.
[0041] The inverted triangular recess 2 and protrusion 19 provide structural stability and facilitate drainage, allowing the mudguard assembly to drain mud and rainwater quickly.
[0042] The lower edge of the outer protective plate 1 of the upper cover plate 8 is set as a rounded corner structure 4.
[0043] The rounded corner structure 4 can prevent sharp parts from cutting people, greatly improving the safety of the product.
[0044] The inner surface of the outer protective plate 1 has a female buckle 17 which is a sloped slide rail 15. At this time, the male buckle 16 is fastened under the slope of the female buckle 17 and the gravity of the upper cover plate 8.
[0045] The slope rail 15 can ensure the reliable installation of the mudguard 8, reduce the probability of loosening and slipping, and at the same time leave deformation allowance for the side plate of the middle bridge mudguard assembly, so that the material will not break under external accidental impact and mud and water scouring.
Claims
1. A commercial vehicle axle mudguard assembly, comprising a mudguard bracket (5) connected to the vehicle frame; a mudguard (7) connected to the lower part of the mudguard bracket (5), the front surface of the mudguard (7) being fastened to the mudguard bracket (5) by a clamp plate (6), and an upper cover plate (8) connected upward to the rear surface of the mudguard (7) by a fixing bracket (18); wherein the upper end of the clamp plate (6) is also connected to the upper cover plate (8); wherein the upper cover plate (8) is configured with a symmetrical structure of front and rear planes with the axis of the mudguard (7) as the dividing line, and the front and rear planes form a concave arc slope; and grooves (10) and openings (11) for docking with the wheel hub caps of automobiles are also provided on the front and rear planes; characterized in that: The upper cover plate (8) is an injection-molded one-piece structure; ultimately forming a commercial vehicle middle axle mudguard assembly; The upper cover plate (8) also has multiple cutouts (9) between its front and rear planes; The inner side of the upper cover plate (8) extends downward to provide an inner guard plate (14), which forms a protective surface with the frame; the protective surface also has an opening (13) in conjunction with the mudguard bracket (5); the outer side of the upper cover plate (8) extends downward to provide an outer guard plate (1), which forms an inverted triangular structure after extending downward and covers the outer side of the mudguard. The outer protective plate (1) has a recess (2) on its outer surface facing inward. The recess (2) forms a second water guide groove (3) along the dividing line. The second water guide groove (3) extends out of the outer protective plate (1). The recess (2) forms a protrusion (19) on the inner surface of the outer protective plate (1), and a female buckle (17) is provided downward along the protrusion (19). Both sides of the mudguard are provided with male buckles (16), and the male buckles (16) cooperate with the female buckles (17) to form a plug-in structure.
2. The commercial vehicle axle mudguard assembly according to claim 1, characterized in that: The outer protective plate (1) has an inverted triangle recess (2) on its outer surface facing inward, which corresponds to an inverted triangle protrusion (19) on the inner surface of the outer protective plate (1).
3. The commercial vehicle axle mudguard assembly according to claim 2, characterized in that: The lower edge of the outer protective plate (1) of the upper cover plate (8) is set as a rounded corner structure (4).
4. A commercial vehicle axle mudguard assembly according to claim 2 or 3, characterized in that: The inner surface of the outer protective plate (1) is provided with a female buckle (17) which is a slope slide rail. At this time, the male buckle (16) is fastened under the slope of the female buckle (17) and the gravity of the upper cover plate (8).