Combined rear wheel mudguard structure and electric vehicle

Abstract

This utility model provides a combined rear wheel mudguard structure and an electric vehicle, relating to the field of electric vehicle component technology. The combined rear wheel mudguard structure includes a high-strength lightweight metal rear wheel mudguard body, an engineering plastic tail plate, and a connector. The engineering plastic tail plate is connected to the rear of the high-strength lightweight metal rear wheel mudguard body via the connector. This utility model uses a combination of high-strength lightweight metal and engineering plastic. Compared to all-plastic rear wheel mudguards, it not only has good impact resistance and durability, a robust structure, and is not easily deformed, but also effectively reduces the amount of plastic parts used, reducing the proportion of plastic parts in the overall vehicle, meeting the requirements of the new national standards and regulations. At the same time, it can reduce the risk of fire and reduce the generation of harmful gases during combustion. Compared to all-metal rear wheel mudguards, it is lighter in weight while ensuring structural strength, and can be adapted to complex shapes, meeting departure angle requirements and ensuring the overall vehicle passability.

Description

Technical Field

[0001] This utility model relates to the field of electric vehicle parts technology, specifically to a combined rear wheel mudguard structure and an electric vehicle. Background Technology

[0002] The rear mudguard (also known as the rear mudguard or rear mud flap) of an electric bicycle is a plate-like structure installed above or behind the rear wheel tire, mainly used to block mud, water, sand and gravel kicked up by the wheel during riding.

[0003] Traditional rear wheel mudguards generally use an all-plastic structure, which has advantages such as low cost and light weight, but it has at least the following technical drawbacks:

[0004] 1. Insufficient mechanical properties: The all-plastic rear wheel mudguards have insufficient impact resistance, low strength, and are easily deformed. They are prone to damage during actual use, which leads to the failure of the mudguard function.

[0005] 2. Traditional rear wheel mudguards are made entirely of plastic, accounting for a large proportion of the total weight of plastic parts in the vehicle. This results in the total weight of plastic parts in the vehicle being seriously excessive, failing to meet the strict requirements of the new national standard (GB17761—2024) for the total weight of electric bicycles (≤63kg) and the proportion of plastic parts (≤5.5% of vehicle weight) (to be implemented on September 1, 2025).

[0006] 3. Safety hazards exist: Plastic parts have a low ignition point and will release harmful gases when burning.

[0007] In response, rear fenders made of all-metal parts have emerged. Although this can improve their strength, they are often heavy and have manufacturing limitations. All-metal parts cannot be adapted to complex shapes and cannot simultaneously meet the requirements for mud-blocking effect and rear wheel departure angle. Utility Model Content

[0008] The purpose of this utility model is to provide a combined rear wheel mudguard structure and an electric vehicle to solve the above-mentioned technical problems existing in the prior art; the preferred technical solution among the many technical solutions provided by this utility model can produce many technical effects, as detailed below.

[0009] To achieve the above objectives, the present invention provides the following technical solution:

[0010] This utility model provides a combined rear wheel mudguard structure, including a high-strength lightweight metal rear wheel mudguard body, an engineering plastic tail plate, and a connector. The engineering plastic tail plate is connected to the tail of the high-strength lightweight metal rear wheel mudguard body through the connector.

[0011] Preferably, the high-strength lightweight metal rear wheel mudguard body is made of sheet metal, magnesium alloy, or aluminum alloy.

[0012] Preferably, the high-strength lightweight metal rear wheel mudguard body is provided with at least one support component for connecting the electric vehicle frame.

[0013] Preferably, the support assembly includes a front support assembly, which is disposed near the head of the high-strength lightweight metal rear wheel mudguard body; the front support assembly includes two first high-strength lightweight metal brackets, which are symmetrically disposed on both sides of the high-strength lightweight metal rear wheel mudguard body; the edges of the first high-strength lightweight metal brackets are provided with a first flange structure.

[0014] Preferably, the support assembly includes a rear support assembly, which is disposed near the tail of the high-strength lightweight metal rear wheel mudguard body; the rear support assembly includes two second high-strength lightweight metal brackets, which are symmetrically disposed on both sides of the high-strength lightweight metal rear wheel mudguard body; the edges of the second high-strength lightweight metal brackets are provided with a second flange structure.

[0015] Preferably, a first boss is provided near the tail of the high-strength lightweight metal rear wheel mudguard body, and a reflector assembly is detachably mounted on the first boss.

[0016] Preferably, the reflector assembly includes a reflector bracket, a side reflector, and a rear reflector, wherein: the central section of the reflector bracket is recessed towards the high-strength lightweight metal rear wheel mudguard body and forms a support platform, the support platform being detachably mounted on the first protrusion; the central section of the reflector bracket is integrally provided with a mounting plate, and the rear reflector is mounted on the mounting plate; the edge section of the reflector bracket is integrally provided with a mounting side plate, and the side reflector is mounted on the mounting side plate.

[0017] Preferably, the high-strength lightweight metal rear wheel mudguard body is provided with a second protrusion, which is located between the first protrusion and the engineering plastic tail plate; the combined rear wheel mudguard structure includes a tail exhaust bracket, which is detachably mounted on the reflector bracket, and the second protrusion abuts against the tail exhaust bracket.

[0018] Preferably, the departure angle of the engineering plastic tailplate is less than or equal to 55°.

[0019] This utility model provides an electric vehicle, including any of the aforementioned combined rear wheel mudguard structures.

[0020] The combined rear wheel mudguard structure and electric vehicle provided by this utility model have at least the following beneficial effects:

[0021] The combined rear wheel mudguard structure includes a high-strength lightweight metal rear wheel mudguard body, an engineering plastic tail plate, and a connector. The engineering plastic tail plate is set at the rear of the high-strength lightweight metal rear wheel mudguard body through the connector. In this way, the high-strength lightweight metal rear wheel mudguard body and the engineering plastic tail plate constitute the rear wheel mudguard, thereby effectively ensuring the mudguarding effect.

[0022] The high-strength lightweight metal rear wheel mudguard body is made of high-strength lightweight metal, while the engineering plastic tailguard is made of engineering plastic. The high-strength lightweight metal material has good impact resistance and durability, and compared with all-plastic rear wheel mudguards, it can reduce the emission of harmful gases during combustion and improve fire safety. The engineering plastic tailguard is the rear structure of the rear wheel mudguard, which is suitable for complex shapes and can meet the requirements of the rear wheel departure angle, ensuring vehicle passability without affecting the mud-blocking effect.

[0023] This utility model's combined rear wheel mudguard structure combines high-strength, lightweight metal with engineering plastics. It not only has good impact resistance and durability, but also a robust structure that is not easily deformed. Furthermore, while ensuring lightweight construction, it effectively reduces the weight of plastic parts, meeting the requirements of the new national standards and regulations. It also reduces the emission of harmful gases during combustion, improving fire safety. At the same time, while ensuring mudguarding effect, it meets the rear wheel departure angle requirements, ensuring vehicle passability. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the structure of this utility model from one perspective;

[0026] Figure 2 This is a structural schematic diagram from another perspective of the present invention;

[0027] Figure 3 This is an exploded view of the present invention;

[0028] Figure 4 This is an exploded view of the high-strength lightweight metal rear wheel mudguard body and the engineering plastic tail plate of this utility model.

[0029] Figure 5 This is a schematic diagram of the structure of the reflector bracket of this utility model;

[0030] Figure 6 This is a schematic diagram of the departure angle of this utility model.

[0031] Figure Labels

[0032] 1. High-strength lightweight metal rear wheel mudguard body; 11. First connecting hole; 12. Insertion groove; 13. First boss; 14. Second boss; 2. Engineering plastic tail plate; 21. Second connecting hole; 3. Front support assembly; 31. First high-strength lightweight metal bracket; 32. First flange structure; 4. Rear support assembly; 41. Second high-strength lightweight metal bracket; 42. Second flange structure; 5. Reflector assembly; 51. Reflector bracket; 511. Mounting plate; 512. Mounting side plate; 513. Support platform; 52. Side reflector; 53. Rear reflector; 6. Tail exhaust bracket. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0034] Example 1:

[0035] This utility model provides a combined rear wheel mudguard structure, referenced Figures 1 to 6 As shown, the combined rear wheel mudguard structure includes a high-strength lightweight metal rear wheel mudguard body 1, an engineering plastic tailplate 2, and connecting parts.

[0036] The high-strength lightweight metal rear wheel mudguard body 1 is made of high-strength lightweight metal, and the engineering plastic tail plate 2 is made of engineering plastic. The connecting parts are threaded connecting parts, preferably self-tapping screws. The engineering plastic tail plate 2 is connected and installed at the tail of the high-strength lightweight metal rear wheel mudguard body 1 through the connecting parts.

[0037] In actual use, the high-strength lightweight metal rear wheel mudguard body 1 and the engineering plastic tail plate 2 are combined to form the rear wheel mudguard, which is set above the rear wheel. When the wheel rotates, it can effectively block the mud and sand carried by the wheel, and the mud-blocking effect is significant.

[0038] The high-strength, lightweight metal rear wheel mudguard body 1 is the main part of the mudguard, and the engineering plastic tailplate 2 is the auxiliary part. It adopts a combination of high-strength, lightweight metal and engineering plastic. Compared with all-plastic rear wheel mudguards, it not only has good impact resistance and durability, but also has a strong structure and is not easily deformed. It can also effectively reduce the amount of plastic parts used and reduce the proportion of plastic parts in the whole vehicle, meeting the strict requirements of the new national standard for the proportion of plastic parts in electric vehicles. At the same time, it can reduce the risk of fire and reduce the generation of harmful gases during combustion. Compared with all-metal rear wheel mudguards, it is lighter in weight while ensuring structural strength, and can be adapted to complex shapes, meet departure angle requirements, and ensure the overall vehicle passability.

[0039] Example 2:

[0040] Example 2 is based on Example 1:

[0041] like Figures 1 to 6 As shown, the high-strength, lightweight metal rear wheel mudguard body 1 is made of sheet metal, magnesium alloy, or aluminum alloy.

[0042] The sheet metal parts are made of high-strength sheet metal, formed by stamping, bending and welding, and the surface is treated with anti-corrosion treatment (such as electrophoresis and spraying), which has the advantages of high rigidity and high impact resistance.

[0043] The magnesium alloy parts and the aluminum alloy parts have good heat dissipation and damping properties. Their surfaces are treated with anti-oxidation and coating, and they also have a certain degree of decorative properties.

[0044] Specifically, DC01 sheet metal parts, magnesium alloy parts with grade AZ91D, or aluminum alloy parts with grade A380 can be used.

[0045] The engineering plastic tailgate 2 is made of PP (polypropylene) material.

[0046] As an optional implementation, the high-strength lightweight metal rear wheel mudguard body 1 is connected to a support assembly.

[0047] The number of the support components is set to at least one. The support component is connected to the electric vehicle frame and is a load-bearing structure of the combined rear wheel mudguard structure for its firm support.

[0048] As an optional implementation, the support assembly includes a front support assembly 3, which is disposed near the head of the high-strength lightweight metal rear wheel mudguard body 1.

[0049] The front support assembly 3 includes two first high-strength lightweight metal brackets 31. The two first high-strength lightweight metal brackets 31 are symmetrically arranged on both sides of the high-strength lightweight metal rear wheel mudguard body 1. The first high-strength lightweight metal brackets 31 are made of high-strength lightweight metal and are welded to the inner wall of the high-strength lightweight metal rear wheel mudguard body 1 near the edge.

[0050] The first high-strength lightweight metal support 31 has a first flange structure 32 on its edge, which can effectively improve the structural strength while ensuring a lighter weight.

[0051] As an optional implementation, the support assembly includes a rear support assembly 4, which is disposed near the tail of the high-strength lightweight metal rear wheel mudguard body 1.

[0052] The rear support assembly 4 includes two second high-strength lightweight metal brackets 41. The two second high-strength lightweight metal brackets 41 are symmetrically arranged on both sides of the high-strength lightweight metal rear wheel mudguard body 1. The second high-strength lightweight metal brackets 41 are made of high-strength lightweight metal and are welded to the inner wall of the high-strength lightweight metal rear wheel mudguard body 1 near the edge.

[0053] The second high-strength lightweight metal support 41 has a second flange structure 42 on its edge, which can effectively improve the structural strength while ensuring a lighter weight.

[0054] As an optional implementation, the tail end of the high-strength lightweight metal rear wheel mudguard body 1 is inserted and connected to the engineering plastic tailguard 2.

[0055] Specifically, the tail end of the high-strength lightweight metal rear wheel mudguard body 1 is provided with an insertion groove 12, which is adapted to the front part of the engineering plastic tailguard 2. During assembly, the front part of the engineering plastic tailguard 2 is inserted into the insertion groove 12.

[0056] The tail end of the high-strength lightweight metal rear wheel mudguard body 1 is provided with a first connecting hole 11, and the engineering plastic tailguard 2 is provided with a connecting post, and the connecting post is provided with a second connecting hole 21 along the axial direction.

[0057] During assembly, when the tail end of the high-strength lightweight metal rear wheel mudguard body 1 is inserted into the engineering plastic tailguard 2, the first connecting hole 11 corresponds to the second connecting hole 21. At this time, the connecting piece is used to pass through the first connecting hole 11 and the second connecting hole 21, thereby connecting the engineering plastic tailguard 2 to the tail end of the high-strength lightweight metal rear wheel mudguard body 1.

[0058] The combination of insert structure and connector structure ensures a firm connection and convenient assembly.

[0059] As an optional implementation, a first boss 13 is provided near the tail of the high-strength lightweight metal rear wheel mudguard body 1. The first boss 13 is stamped and formed, and a reflector assembly 5 is detachably provided on the first boss 13.

[0060] As an optional implementation, the reflector assembly 5 includes a reflector bracket 51, a side reflector 52, and a rear reflector 53.

[0061] The middle section of the reflector bracket 51 is recessed towards the high-strength lightweight metal rear wheel mudguard body 1, forming a support platform 513. The support platform 513 is detachably connected to the first boss 13 by threaded fasteners.

[0062] The top of the middle section of the reflector bracket 51 is integrally provided with a mounting plate 511, and the rear reflector 53 is mounted on the mounting plate 511.

[0063] The reflector bracket 51 has two mounting side plates 512 integrally provided on both sides of the edge section. The number of side reflectors 52 is set to two, and the two side reflectors 52 are respectively set on the two mounting side plates 512.

[0064] The rear reflector 53 and the side reflector 52 work together to improve driving safety at night and in low-light conditions.

[0065] As an optional implementation, the combined rear wheel mudguard structure includes a tail exhaust bracket 6, which is detachably mounted on the support surface of the side section of the reflector bracket 51 by means of threaded fasteners. The tail exhaust bracket 6 is used for the installation of the tail exhaust and is provided with an elongated hole for easy installation of threaded fasteners.

[0066] A second boss 14 is provided on the high-strength lightweight metal rear wheel mudguard body 1. The second boss 14 is stamped and formed. The platform of the second boss 14 is parallel to the support surface of the edge section of the reflector bracket 51. The second boss 14 is located between the first boss 13 and the engineering plastic tail plate 2.

[0067] The second protrusion 14 is a limiting protrusion, which abuts against the tail section bracket 6 and is used for limiting and supporting the tail section bracket 6.

[0068] In practical applications, the platform of the second boss 14 is slightly higher than the support surface of the edge section of the reflector bracket 51. This allows for pre-interference, ensuring that the second boss 14 can abut against the tail row bracket 6 after installation, thus guaranteeing its installation stability.

[0069] As an optional implementation, the departure angle α of the engineering plastic tailplate 2 is ≤55°.

[0070] The departure angle α refers to the angle between the tangent line drawn from the rear end protruding point of the engineering plastic tailplate 2 to the rear wheel and the road surface, which is no greater than 55°, and can effectively ensure the vehicle's passability.

[0071] Example 3

[0072] Example 3 is based on Example 2:

[0073] This utility model provides an electric vehicle, which includes the combined rear wheel mudguard structure.

[0074] In the description of this application, it should be understood that the terms "upper", "lower", "inner", "outer", "top", "bottom", "front", "rear", "head", "tail", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0075] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" or "several" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0076] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0077] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A combined rear wheel mudguard structure, characterized by comprising: It includes a high-strength lightweight metal rear wheel mudguard body, an engineering plastic tailplate, and a connector. The engineering plastic tailplate is connected to the tail of the high-strength lightweight metal rear wheel mudguard body via the connector.

2. The combined rear wheel mudguard structure according to claim 1, characterized in that, The high-strength, lightweight metal rear wheel mudguard body is made of sheet metal, magnesium alloy, or aluminum alloy.

3. The combined rear wheel mudguard structure according to claim 1, characterized in that, The high-strength, lightweight metal rear wheel mudguard body is connected to at least one support component for connecting the electric vehicle frame.

4. The combined rear wheel mudguard structure according to claim 3, characterized in that, The support assembly includes a front support assembly, which is disposed near the head of the high-strength lightweight metal rear wheel mudguard body. The front support assembly includes two first high-strength lightweight metal brackets, which are symmetrically arranged on both sides of the high-strength lightweight metal rear wheel mudguard body. The first high-strength lightweight metal bracket has a first flange structure on its edge.

5. The combined rear wheel mudguard structure according to claim 3 or 4, characterized in that, The support assembly includes a rear support assembly, which is disposed near the tail of the high-strength lightweight metal rear wheel mudguard body. The rear support assembly includes two second high-strength lightweight metal brackets, which are symmetrically arranged on both sides of the high-strength lightweight metal rear wheel mudguard body. The second high-strength lightweight metal bracket has a second flange structure on its edge.

6. The combined rear wheel mudguard structure according to claim 1, characterized in that, The high-strength, lightweight metal rear wheel mudguard body has a first protrusion near the rear, and a reflector assembly is detachably mounted on the first protrusion.

7. The combined rear wheel mudguard structure according to claim 6, characterized in that, The reflector assembly includes a reflector bracket, side reflectors, and a rear reflector, wherein: The middle section of the reflector bracket is recessed towards the high-strength lightweight metal rear wheel mudguard body and forms a support platform, which is detachably mounted on the first protrusion. The central section of the reflector bracket is integrally provided with a mounting plate, and the rear reflector is mounted on the mounting plate. The side section of the reflector bracket is integrally provided with a mounting side plate, and the side reflector is mounted on the mounting side plate.

8. The combined rear wheel mudguard structure according to claim 7, characterized in that, The high-strength lightweight metal rear wheel mudguard body is provided with a second protrusion, which is located between the first protrusion and the engineering plastic tail plate. The combined rear wheel mudguard structure includes a tail exhaust bracket, which is detachably mounted on the reflector bracket, and the second boss abuts against the tail exhaust bracket.

9. The combined rear wheel mudguard structure according to claim 1, characterized in that, The departure angle of the engineering plastic tailplate is less than or equal to 55°.

10. An electric vehicle, characterized in that, The combined rear wheel mudguard structure includes any one of claims 1 to 9.

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