Electric two-wheeler

Abstract

The present application discloses an electric two-wheeled vehicle, which includes a frame, a body covering, a running assembly, a suspension assembly and a driving assembly, wherein the body covering is at least partially located on the frame; the running assembly includes a rear wheel, which is at least partially located below the frame; the suspension assembly includes a rear swing arm and a shock absorber; the driving assembly is supported by the frame and is transmission-connected to the rear wheel; the rear swing arm is located between the rear wheel and the frame, and the shock absorber is located between the frame and the rear swing arm; the rear swing arm includes a swing arm body, a shield mounting bracket and a shock-absorbing mounting bracket, the shield mounting bracket is located on the swing arm body and fixedly connected to the swing arm body, the shock-absorbing mounting bracket is located above the shield mounting bracket and fixedly connected to the swing arm body; one end of the shock absorber away from the frame is rotationally connected to the shock-absorbing mounting bracket; the body covering includes a side shield, which is fixedly connected to the shield mounting bracket. Through the above arrangement, the compactness of the structure of the electric two-wheeled vehicle can be improved.

Description

Technical Field

[0001] The present application relates to the field of vehicle technology, and in particular to an electric two-wheeled vehicle. Background Art

[0002] As the requirements for environmental protection and energy saving become higher and higher, the number of electric two-wheeled vehicles is gradually increasing. Among them, electric two-wheeled vehicles have a high demand for compactness due to their small size.

[0003] In the existing electric two-wheeled vehicles, the two ends of the shock absorber are rotatably connected to the frame and the rear swing arm, respectively, so that the shock absorption effect of the electric two-wheeled vehicle is better. The side guard is generally arranged on the outside of the rear swing arm to protect the rear swing arm and the parts on the rear swing arm. In the prior art, the side guard is connected to the frame, so the frame is provided with a connection point specially provided for the side guard, thereby increasing the parts on the frame, which is not conducive to improving the structural compactness of the frame, and thus the structural compactness of the electric two-wheeled vehicle is not high. Utility Model Content

[0004] In order to solve the deficiencies of the prior art, the purpose of the present application is to provide an electric two-wheeled vehicle with good compactness.

[0005] To achieve the above objectives, this application adopts the following technical solutions:

[0006] An electric two-wheeled vehicle comprises a frame, a body covering, a running assembly, a suspension assembly and a driving assembly, wherein the body covering is at least partially located on the frame; the running assembly comprises a rear wheel, which is at least partially located below the frame; the suspension assembly comprises a rear swing arm and a shock absorber; the driving assembly is supported by the frame and is transmission-connected to the rear wheel; the rear swing arm is located between the rear wheel and the frame, and the shock absorber is located between the frame and the rear swing arm; the rear swing arm comprises a swing arm body, a shield mounting bracket and a shock absorber mounting bracket, the shield mounting bracket is located on the swing arm body and fixedly connected to the swing arm body, and the shock absorber mounting bracket is located above the shield mounting bracket and fixedly connected to the swing arm body; one end of the shock absorber away from the frame is rotatably connected to the shock absorber mounting bracket; the body covering comprises a side shield, which is fixedly connected to the shield mounting bracket.

[0007] Further, a longitudinal plane perpendicular to the width direction of the electric two-wheeled vehicle and passing through the width center of the electric two-wheeled vehicle is defined, the side guard is located on the side of the rear swing arm away from the longitudinal plane, and when viewed along the width direction of the electric two-wheeled vehicle, the side guard basically overlaps with the swing arm body.

[0008] Furthermore, the shock-absorbing mounting bracket is provided with a shock-absorbing mounting hole and a weight-reducing hole, the shock absorber is rotatably connected to the shock-absorbing mounting hole via a fastener, and the weight-reducing hole is located below the shock-absorbing mounting hole.

[0009] Furthermore, a longitudinal plane perpendicular to the width direction of the electric two-wheeled vehicle and passing through the width center of the electric two-wheeled vehicle is defined, the projection of the shock-absorbing mounting bracket along the width direction on the longitudinal plane is defined as the bracket projection, the projection of the weight-reducing hole along the width direction on the longitudinal plane is defined as the weight-reducing projection, and the ratio of the area of ​​the weight-reducing projection to the area of ​​the bracket projection is greater than or equal to 0.12 and less than or equal to 0.19.

[0010] Furthermore, the shock-absorbing mounting bracket is provided with an oil pipe fixing hole, the electric two-wheeled vehicle comprises a brake oil pipe, the brake oil pipe is basically arranged along the extension direction of the rocker arm body, and the brake oil pipe is clamped with the oil pipe fixing hole through a fastener.

[0011] Furthermore, the oil pipe fixing hole is located in front of or behind the weight reduction hole.

[0012] Furthermore, the shock-absorbing mounting bracket includes an integrally formed bottom plate and two side plates, the two side plates are distributed on both sides of the bottom plate along the width direction of the electric two-wheeled vehicle, the shock-absorbing mounting is directly fixedly connected to the rocker arm body through the bottom plate, and the shock-absorbing mounting hole and the weight-reducing hole are both located on the side plates.

[0013] Furthermore, the bottom plate is fixedly connected to the shield mounting bracket and the rocker arm body respectively.

[0014] Furthermore, the shield mounting bracket is provided with a shield mounting hole, and the side shield is connected to the shield mounting hole via a fastener.

[0015] Furthermore, the guard mounting bracket includes a supporting portion, a connecting portion and a mounting portion, the mounting portion is located between the supporting portion and the connecting portion, the supporting portion is connected to the upper portion of the rocker arm body, the shock absorbing mounting bracket is connected to the supporting portion, the connecting portion is connected to the lower portion of the rocker arm body, and the guard mounting hole is opened in the mounting portion.

[0016] The above-mentioned electric two-wheeled vehicle can integrate the mounting points of the shock absorber and the side guard into the rocker arm body, thereby reducing the number of additional mounting points of the shock absorber and the side guard, thereby simplifying the structure of the suspension assembly and helping to improve the structural compactness of the electric two-wheeled vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of the structure of an electric two-wheeled vehicle provided in an embodiment of the present application.

[0018] Figure 2 A three-dimensional diagram of the partial structure of an electric two-wheeled vehicle provided in an embodiment of the present application.

[0019] Figure 3 An exploded view of the frame, body covering and radar of the electric two-wheeled vehicle provided in an embodiment of the present application.

[0020] Figure 4A partial cross-sectional view of the radar installation position of the electric two-wheeled vehicle provided in an embodiment of the present application.

[0021] Figure 5 For the embodiment of this application Figure 4 A partial enlarged view of point A in the middle.

[0022] Figure 6 An exploded view of the suspension assembly, brake system and body covering of the electric two-wheeled vehicle provided in an embodiment of the present application.

[0023] Figure 7 An exploded view of the shock-absorbing mounting bracket and the shield mounting bracket of the electric two-wheeled vehicle provided in an embodiment of the present application.

[0024] Figure 8 A partial structural schematic diagram of the traveling assembly, power battery and drive assembly of the electric two-wheeled vehicle provided in an embodiment of the present application.

[0025] Fig. 9 A cross-sectional view of an end cover of a hub motor for an electric two-wheeled vehicle provided in an embodiment of the present application.

[0026] Fig.10 A side view of the end cover of the hub motor of an electric two-wheeled vehicle provided in an embodiment of the present application.

[0027] Fig.11 An exploded view of the hub motor of an electric two-wheeled vehicle provided in an embodiment of the present application.

[0028] Fig.12 A side view of the rim of an electric two-wheeled vehicle provided in an embodiment of the present application. DETAILED DESCRIPTION

[0029] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the specific implementation manner of the present application will be clearly and completely described below in conjunction with the drawings in the implementation manner of the present application.

[0030] like Figure 1 and Figure 2As shown, an electric two-wheeled vehicle 100 includes a frame 11, a body cover 12, a travel assembly 13, a suspension assembly 14, a drive assembly 15, a power battery 16 and a saddle assembly 17. Among them, the frame 11 serves as the basic framework of the electric two-wheeled vehicle 100, and is used to support the body cover 12, the travel assembly 13, the suspension assembly 14, the drive assembly 15, the power battery 16 and the saddle assembly 17. The body cover 12 is at least partially located on the frame 11 and fixedly connected to the frame 11. The suspension assembly 14 is at least partially mounted on the frame 11, and the travel assembly 13 is connected to the frame 11 through the suspension assembly 14. The drive assembly 15 is supported by the frame 11 and is transmission-connected to the travel assembly 13, so that the power of the drive assembly 15 is transmitted to the travel assembly 13, so that the travel assembly 13 can drive the electric two-wheeled vehicle 100 to move. The power battery 16 is supported by the frame 11 and electrically connected to the drive assembly 15, so as to provide energy for the drive assembly 15. The saddle assembly 17 is supported by the frame 11 for providing support for the rider.

[0031] Specifically, the travel assembly 13 is at least partially located below the frame 11, so as to avoid interference between the travel assembly 13 and other components of the electric two-wheeled vehicle 100, so as to facilitate the normal operation of the travel assembly 13. The travel assembly 13 includes a front wheel 131 and a rear wheel 132, and the suspension assembly 14 includes a front suspension 141 and a rear swing arm 142, the front suspension 141 connects the front wheel 131 to the frame 11, and the rear swing arm 142 connects the rear wheel 132 to the frame 11. The drive assembly 15 is connected to the rear wheel 132 in a transmission manner to drive the rear wheel 132 to rotate. Among them, the front wheel 131 and the rear wheel 132 are at least partially located below the frame 11.

[0032] In order to clearly illustrate the technical solution of this application, the following is also defined: Figure 1 In the present application, the length direction of the electric two-wheeled vehicle 100 refers to the front, rear, left, right, top and bottom. Figure 1 In the front-to-back direction, the width direction of the electric two-wheeled vehicle 100 refers to Figure 1 In the left and right directions, the height direction of the electric two-wheeled vehicle 100 refers to Figure 1 The up and down directions in .

[0033] like Figure 3 , Figure 4 and Figure 5 As shown, as an implementation, the body cover 12 includes a mudguard rear cover 121 and a rear mudguard 125. The rear mudguard 125 is located at the rear of the frame 11 and connected to the frame 11, and the mudguard rear cover 121 covers the rear of the rear mudguard 125 and is connected to the rear mudguard 125. The mudguard rear cover 121 and the rear mudguard 125 are used to block mud and water splashed during the operation of the rear wheel 132.

[0034] The vehicle frame 11 includes a rear tail pipe 118 located at the rear of the vehicle frame 11 , and the rear fender 125 is mounted on the rear tail pipe 118 .

[0035] Specifically, the electrical component 20 further includes a radar 205, which is used to detect the distance between the rear of the electric two-wheeled vehicle 100 and an obstacle, and to remind the driver according to the distance between the rear of the electric two-wheeled vehicle 100 and the obstacle. The radar 205 is a blind spot detection (BSD) system, which can improve the driving safety of the electric two-wheeled vehicle 100.

[0036] A radar accommodating portion 126 is formed around the mudguard rear cover 121 and the rear mudguard 125. The radar 205 is at least partially located in the radar accommodating portion 126 and is connected to the rear mudguard 125. Through the above arrangement, the radar 205 can be fixed to the rear of the electric two-wheeled vehicle 100, so as to facilitate the radar 205 to detect obstacles behind the electric two-wheeled vehicle 100. At the same time, since the mudguard rear cover 121 and the rear mudguard 125 are both plastic parts, the mudguard rear cover 121 and the rear mudguard 125 will not affect the detection of the radar 205, so that the mudguard rear cover 121 and the rear mudguard 125 can realize the normal operation of the radar 205 while fixing the radar 205. Among them, the radar 205 has a maximum detection area M1, and the maximum detection area M1 is as follows. Figure 5 It can be understood that the maximum detection area M1 of the radar 205 refers to the maximum detection range of the radar 205 for emitting electromagnetic waves to detect the distance between the obstacle and the electric two-wheeled vehicle 100, that is, the maximum detection area M1 of the radar 205 refers to the maximum detection range that the radar 205 can detect.

[0037] In this embodiment, the electric two-wheeled vehicle 100 further includes a license plate 262 and a license plate light 261 located at the rear of the vehicle frame 11. The license plate 262 and the license plate light 261 will affect the detection of the radar 205, that is, the license plate 262 and the license plate light 261 can interfere with or shield the detection area of ​​the radar 205. Therefore, the arrangement of the license plate 262 and the license plate light 261 is an important factor affecting the detection accuracy of the radar 205. However, the license plate 262 and the license plate light 261 are also important and indispensable components of the electric two-wheeled vehicle 100. In order to reduce the interference of the license plate 262 and the license plate light 261 with the detection area of ​​the radar 205, the arrangement positions of the license plate 262 and the license plate light 261 can be reasonably arranged.

[0038] As an optional implementation, the license plate 262 and the license plate light 261 are arranged around the radar 205, that is, the license plate 262 and the license plate light 261 are arranged in the area above or below the radar 205, so as to reduce the impact of the license plate 262 and the license plate light 261 on the radar 205.

[0039] In the present application, the license plate light 261 is mainly used to illuminate the license plate 262, so the license plate light 261 is located above the license plate 262. Optionally, the radar 205 is at least partially located between the license plate 262 and the license plate light 261, that is, the license plate 262 is at least partially located below the radar 205, and the license plate light 261 is at least partially located above the radar 205.

[0040] As an optional implementation method, the license plate 262 and the license plate light 261 can be located outside the maximum detection area M1 of the radar 205, that is, the license plate 262 and the license plate light 261 do not interfere with the maximum detection area M1 of the radar 205. It can be understood that at this time, the detection range of the actual detection area M2 of the radar 205 is the maximum detection area M1 of the radar 205. At this time, the detection range of the radar 205 is the largest and the detection effect is the best, thereby further improving the driving safety of the electric two-wheeled vehicle 100. It can be understood that this setting method requires a large space for the layout of the rear components of the electric two-wheeled vehicle 100.

[0041] As another optional implementation, the license plate 262 and the license plate light 261 are at least partially located within the maximum detection area M1 of the radar 205. At this time, the license plate 262 and the license plate light 261 interfere with the maximum detection area M1 of the radar 205, so that the detection area of ​​the maximum detection area M1 of the radar 205 is reduced under the interference of the license plate 262 and the license plate light 261. The area that the radar 205 is actually allowed to detect after being interfered by the license plate 262 and the license plate light 261 is defined as the actual detection area M2. It can be understood that the area of ​​the actual detection area M2 is smaller than the area of ​​the maximum detection area M1. The above arrangement can make the structure of the license plate 262, the license plate light 261 and the radar 205 more compact while meeting the detection requirements of the radar 205, thereby improving the structural compactness of the license plate 262 and the license plate light 261 on the electric two-wheeled vehicle 100, so that the radar 205 can not only meet the detection requirements, but also increase the structural compactness of the relevant components of the rear of the electric two-wheeled vehicle 100.

[0042] It should be noted that the actual detection area M2 is as follows Figure 5 The area enclosed by the middle dotted line, the actual detection area M2, refers to the actual detection range that can be detected when the radar 205 is located on the electric two-wheeled vehicle 100.

[0043] A longitudinal plane 101 perpendicular to the width direction of the electric two-wheeled vehicle 100 and passing through the width center of the electric two-wheeled vehicle 100 is defined, and the projection range of the maximum detection area M1 of the radar 205 along the width direction of the electric two-wheeled vehicle 100 on the longitudinal plane 101 is defined as the maximum detection projection, and the projection range of the actual detection area M2 along the width direction of the electric two-wheeled vehicle 100 on the longitudinal plane 101 is defined as the actual detection projection. Optionally, the ratio of the area of ​​the maximum detection projection to the area of ​​the actual detection projection is greater than or equal to 1 and less than or equal to 1.5. Specifically, the ratio of the area of ​​the maximum detection projection to the area of ​​the actual detection projection is greater than or equal to 1.1 and less than or equal to 1.4. More specifically, the ratio of the area of ​​the maximum detection projection to the area of ​​the actual detection projection is greater than or equal to 1.2 and less than or equal to 1.3. This effective control of the actual detection area M2 of the radar 205 can not only meet the effective detection of the rear of the electric two-wheeled vehicle 100 by the radar 205, but also reduce the demand for compactness of the arrangement of related components at the rear of the electric two-wheeled vehicle 100.

[0044] In addition, through the above-mentioned arrangement, components that may interfere with the radar 205 signal can be reasonably arranged around the radar housing 126, thereby ensuring the actual effective detection area of ​​the radar 205 and avoiding improper limitation of the detection range of the radar 205 due to interference from metal components, thereby avoiding the radar 205 from failing to achieve the expected safety performance.

[0045] It should be noted that the detection radius of the radar 205 of the present application for the rear of the electric two-wheeled vehicle 100 is 50m, so the maximum detection projection and the actual detection projection are basically two sectors with basically the same radius and basically overlapping centers, and the center angle of the maximum detection projection is greater than or equal to the center angle of the actual detection projection.

[0046] In this embodiment, a reference plane 102 perpendicular to the height direction of the electric two-wheeled vehicle 100 is defined, the upper edge of the actual detection projection is basically a straight line, the lower edge of the actual detection projection is also basically a straight line, the acute angle β formed by the upper edge of the actual detection projection and the reference plane 102 is greater than or equal to 12° and less than or equal to 20°, and the acute angle Ω formed by the lower edge of the actual detection projection and the reference plane 102 is greater than or equal to 10° and less than or equal to 18°. Specifically, the acute angle β formed by the upper edge of the actual detection projection and the reference plane 102 is greater than or equal to 14° and less than or equal to 18°, and the acute angle Ω formed by the lower edge of the actual detection projection and the reference plane 102 is greater than or equal to 12° and less than or equal to 16°. More specifically, the acute angle β formed by the upper edge of the actual detection projection and the reference plane 102 is 16°, and the acute angle Ω formed by the lower edge of the actual detection projection and the reference plane 102 is 14°. Through the above settings, it is possible to avoid the acute angle β or the acute angle Ω being too small, which would cause the actual detection area M2 of the radar 205 to be too small, thereby causing a safety hazard to the electric two-wheeled vehicle 100 during driving. It is also possible to avoid the acute angle β or the acute angle Ω being too large, thereby reducing the layout space of the license plate 262 and the license plate light 261, which is beneficial to the layout of the license plate 262 and the license plate light 261.

[0047] The license plate 262 is located below the actual detection area M2, and the license plate light 261 is located above the actual detection area M2. Through the above arrangement, the influence of the license plate light 261 and the license plate 262 on the radar 205 can be reduced, so that the detection range of the radar 205 is wider, and it is beneficial to improve the detection accuracy of the radar 205, thereby improving the safety of the electric two-wheeled vehicle 100.

[0048] As an implementation method, the fender rear cover 121 includes a mounting frame 1211 and a license plate light frame 1212. The mounting frame 1211 is connected to the rear portion of the vehicle frame 11 and the rear fender 125, respectively. The mounting frame 1211 and the rear fender 125 form a radar accommodation portion 126, and the license plate 262 is located on the mounting frame 1211. The radar accommodation portion 126 is located above the license plate 262.

[0049] The license plate light frame 1212 is connected to the mounting frame 1211, and the license plate light frame 1212 at least partially extends backward to form a lamp mounting portion 1212a. When viewed from the height direction of the electric two-wheeled vehicle 100, the lamp mounting portion 1212a at least partially overlaps with the license plate 262. Specifically, the license plate light frame 1212 is located above the license plate 262, and the license plate lamp 261 is connected to the lamp mounting portion 1212a so that the light of the license plate lamp 261 can be irradiated on the license plate 262. Among them, the lamp mounting portion 1212a is also located above the actual detection area M2 to prevent the license plate lamp 261 from affecting the detection range and detection accuracy of the radar 205.

[0050] Exemplarily, the mounting frame 1211 is at least partially recessed backward to form a cavity 1211a, and the cavity 1211a is located below the connection between the license plate light bracket 1212 and the mounting frame 1211. The cavity 1211a and the rear fender 125 surround to form a radar accommodating portion 126. In the above arrangement, the radar accommodating portion 126 formed by the cavity 1211a and the rear fender 125 is a substantially enclosed space, thereby improving the waterproofness and dustproofness of the radar 205, thereby improving the service life of the radar 205.

[0051] Exemplarily, the rear fender 125 at least partially extends toward the mounting frame 1211 to form a fixing column 1251, and the radar 205 is connected to the fixing column 1251. The fixing column 1251 may be a boss column, so that the radar 205 and the fixing column 1251 can be connected by bolts.

[0052] Exemplarily, the rear fender 125 at least partially extends upward to form a mounting post 1252, the mounting frame 1211 is fixedly connected to the mounting post 1252, and the mounting frame 1211 is also fixedly connected to the rear tail pipe 118. Specifically, the mounting frame 1211 is connected to the rear tail pipe 118. Through the above arrangement, the mounting frame 1211 can be connected to the rear fender 125 and the rear tail pipe 118 at the same time, thereby improving the connection stability of the mounting frame 1211.

[0053] More specifically, the mounting frame 1211 at least partially extends upward to form a tail pipe mounting portion 1211b, and the mounting frame 1211 at least partially extends forward to form a mud guard mounting portion 1211c. The tail pipe mounting portion 1211b is connected to the rear tail pipe 118 by bolts; the mounting column 1252 can be a boss column, and the mounting column 1252 and the mud guard mounting portion 1211c are connected by bolts.

[0054] Through the above-mentioned arrangement, the installation direction of the mounting frame 1211 to the rear tail pipe 118 can be basically perpendicular to the installation direction of the mounting frame 1211 to the mounting column 1252, so that the mounting frame 1211 can be limited in the length direction and the height direction of the electric two-wheeled vehicle 100 through the rear tail pipe 118 and the rear fender 125, so as to further improve the connection stability of the mounting frame 1211.

[0055] Exemplarily, to further improve the stability of the mounting frame 1211, the mounting frame 1211 at least partially extends forward to form an abutment portion 1211d, and the rear fender 125 at least partially extends rearward to form a support portion 1253, and the abutment portion 1211d is located above the support portion 1253 and abuts against the support portion 1253, so that the support portion 1253 can provide a supporting force for the abutment portion 1211d, thereby enabling the rear fender 125 to provide an upward supporting force for the mounting frame 1211, so that the stability of the mounting frame 1211 is higher.

[0056] Optionally, the abutting portion 1211d is located below the tail pipe mounting portion 1211b and the mudguard mounting portion 1211c. When viewed from the length direction of the electric two-wheeled vehicle 100, the abutting portion 1211d at least partially overlaps with the license plate 262.

[0057] As an implementation method, the minimum distance between the rearmost end of the radar 205 and the rearmost end of the electric two-wheeled vehicle 100 along the length direction of the electric two-wheeled vehicle 100 is the radar distance L1, and the minimum distance of the electric two-wheeled vehicle 100 along the length direction of the electric two-wheeled vehicle 100 is the body distance L2. The ratio of the radar distance L1 and the body distance L2 is greater than or equal to 0.051 and less than or equal to 0.077. Specifically, the ratio of the radar distance L1 and the body distance L2 is greater than or equal to 0.057 and less than or equal to 0.071. More specifically, the ratio of the radar distance L1 and the body distance L2 is 0.064. Through the above settings, it is possible to avoid the ratio of the radar distance L1 and the body distance L2 being too large, which causes the radar 205 to be unable to detect the distance between the rearmost end of the electric two-wheeled vehicle 100 and the obstacle, that is, it is possible to avoid the ratio of the radar distance L1 and the body distance L2 being too large, which causes the radar 205 to exceed its maximum detection range, thereby improving the safety of the electric two-wheeled vehicle 100. In addition, since the rear fender 125 is a plastic part, if the distance between the radar 205 and the frame 11 is too large, the length of the rear fender 125 will be too long, so that during the driving process of the electric two-wheeled vehicle 100, the shaking of the rear fender 125 will be increased, and the radar 205 installed on the rear fender 125 will shake, thereby reducing the detection accuracy of the radar 205. Through the above configuration, it is also possible to avoid the ratio of the radar distance L1 to the vehicle body distance L2 being too small and the distance between the radar 205 and the frame 11 being too large, thereby improving the stability of the radar 205 and further improving the detection accuracy of the radar 205.

[0058] Exemplarily, a wheel plane 104 is defined which is perpendicular to the height direction of the electric two-wheeled vehicle 100 and passes through the uppermost end of the rear wheel 132, and the radar 205 is located above the wheel plane 104. Through the above arrangement, the radar 205 can have better wading performance.

[0059] Specifically, a reference plane 102 perpendicular to the height direction of the electric two-wheeled vehicle 100 and passing through the lowest end of the rear wheel 132 is defined, and the minimum distance H between the lowest end of the radar 205 and the reference plane 102 along the height direction of the electric two-wheeled vehicle 100 is greater than or equal to 373 mm and less than or equal to 560 mm. More specifically, the minimum distance H between the lowest end of the radar 205 and the reference plane 102 along the height direction of the electric two-wheeled vehicle 100 is greater than or equal to 420 mm and less than or equal to 514 mm. Furthermore, the minimum distance H between the lowest end of the radar 205 and the reference plane 102 along the height direction of the electric two-wheeled vehicle 100 is 467 mm. Through the above-mentioned configuration, it is possible to avoid the radar 205 being too high and causing interference between the radar 205 and other components of the electric two-wheeled vehicle 100, thereby improving the rationality of the layout of the radar 205 and improving the working stability of the radar 205; it is also possible to avoid the radar 205 being too low and causing external impurities such as water and dust to enter the radar accommodating portion 126, thereby preventing external impurities such as water and dust from contacting the radar 205, thereby improving the service life of the radar 205.

[0060] like Figure 6 and Figure 7 As shown, as an implementation, the suspension assembly 14 includes a shock absorber 143, the shock absorber 143 is located between the frame 11 and the rear swing arm 142, and the shock absorber 143 is connected to the frame 11 and the rear swing arm 142 respectively, so that during the driving process of the electric two-wheeled vehicle 100, the shock absorber 143 can buffer the force between the frame 11 and the rear swing arm 142, thereby improving the comfort of the electric two-wheeled vehicle 100 during the driving process. Among them, the rear swing arm 142 includes a swing arm body 1422, a shield mounting bracket 1423 and a shock absorbing mounting bracket 1424. Specifically, the swing arm body 1422 is rotatably connected to the frame 11. The shield mounting bracket 1423 is located on the rocker body 1422 and is fixedly connected to the rocker body 1422. The shock absorber mounting bracket 1424 is located above the shield mounting bracket 1423 and is fixedly connected to the rocker body 1422. The end of the shock absorber 143 away from the frame 11 is rotatably connected to the shock absorber mounting bracket 1424. The body cover 12 includes a side shield 127, and the side shield 127 is fixedly connected to the shield mounting bracket 1423. Through the above arrangement, the mounting points of the shock absorber 143 and the side shield 127 can be integrated into the rocker body 1422, thereby reducing the additional mounting points of the shock absorber 143 and the side shield 127, thereby simplifying the structure of the suspension assembly 14, which is conducive to improving the structural compactness of the electric two-wheeled vehicle 100.

[0061] Specifically, the shock-absorbing mounting bracket 1424 of the present application is also connected to the shield mounting bracket 1423, that is, the shock-absorbing mounting bracket 1424 is simultaneously connected to the shield mounting bracket 1423 and the rocker arm body 1422. Through the above arrangement, the structural strength of the shock-absorbing mounting bracket 1424 can be improved, thereby improving the supporting strength and service life of the shock-absorbing mounting bracket 1424, and making the connection of the shock absorber 143 more stable, so as to improve the safety of the electric two-wheeled vehicle 100.

[0062] Exemplarily, the shield mounting bracket 1423 and the rocker arm body 1422 may be connected by welding, the shock absorbing mounting bracket 1424 and the rocker arm body 1422 may be connected by welding, and the shock absorbing mounting bracket 1424 and the shield mounting bracket 1423 may be connected by welding.

[0063] It should be noted that the above-mentioned connection method can also be other fixed connection methods, and this application does not limit it.

[0064] In the present application, a longitudinal plane 101 (refer to Figure 4 ), the side guard 127 is located on the side of the rear swing arm 142 away from the longitudinal plane 101. When viewed along the width direction of the electric two-wheeled vehicle 100, the side guard 127 is substantially overlapped with the swing arm body 1422, and when viewed along the width direction of the electric two-wheeled vehicle 100, the guard mounting bracket 1423 and the shock absorbing mounting bracket 1424 are at least partially overlapped with the side guard 127, so that the side guard 127 can protect the swing arm body 1422, the guard mounting bracket 1423 and the shock absorbing mounting bracket 1424, so as to prevent foreign impurities such as stones from colliding with the swing arm body 1422, the guard mounting bracket 1423 and the shock absorbing mounting bracket 1424, thereby improving the service life of the swing arm body 1422, the guard mounting bracket 1423 and the shock absorbing mounting bracket 1424.

[0065] More specifically, the shock-absorbing mounting bracket 1424 is provided with a shock-absorbing mounting hole 1424a and a weight-reducing hole 1424b, and the shock absorber 143 is rotatably connected to the shock-absorbing mounting hole 1424a through a fastener, and the weight-reducing hole 1424b is located below the shock-absorbing mounting hole 1424a, so that the material of the shock-absorbing mounting bracket 1424 below the shock-absorbing mounting hole 1424a can be reduced through the weight-reducing hole 1424b to achieve lightweighting of the shock-absorbing mounting bracket 1424. The fastener can be a bolt, and the fastener passes through the shock absorber 143 and the shock-absorbing mounting hole 1424a and is connected to a nut, so as to achieve the installation of the shock-absorbing mounting bracket 1424 and the shock absorber 143.

[0066] In this embodiment, the projection of the shock-absorbing mounting bracket 1424 along the width direction of the electric two-wheeled vehicle 100 on the longitudinal plane 101 is defined as the bracket projection, and the projection of the weight-reducing hole 1424b along the width direction of the electric two-wheeled vehicle 100 on the longitudinal plane 101 is defined as the weight-reducing projection, and the ratio of the area of ​​the weight-reducing projection to the area of ​​the bracket projection is greater than or equal to 0.12 and less than or equal to 0.19. Specifically, the ratio of the area of ​​the weight-reducing projection to the area of ​​the bracket projection is greater than or equal to 0.14 and less than or equal to 0.18. More specifically, the ratio of the area of ​​the weight-reducing projection to the area of ​​the bracket projection is 0.16. Through the above-mentioned setting, it can be avoided that the area of ​​the weight-reducing hole 1424b is too large, resulting in the structural strength of the shock-absorbing mounting bracket 1424 being unable to meet the use requirements; it can also be avoided that the area of ​​the weight-reducing hole 1424b is too small, resulting in the shock-absorbing mounting bracket 1424 being unable to achieve lightweighting. Therefore, while meeting the structural strength requirements of the shock-absorbing mounting bracket 1424, the weight of the shock-absorbing mounting bracket 1424 is reduced to achieve lightweighting of the shock-absorbing mounting bracket 1424.

[0067] As an implementation method, the electric two-wheeled vehicle 100 includes a braking system 28, and the braking system 28 is used to brake the travel component 13. Among them, the braking system 28 includes a brake oil pipe 281 and a fastener 282, and the brake oil pipe 281 is basically arranged along the extension direction of the rocker arm body 1422. The shock-absorbing mounting bracket 1424 is provided with an oil pipe fixing hole 1424c, and the brake oil pipe 281 is clamped with the oil pipe fixing hole 1424c through the fastener 282, so that the brake oil pipe 281 can be fixed to the shock-absorbing mounting bracket 1424, so that during the driving process of the electric two-wheeled vehicle 100, the shaking of the brake oil pipe 281 can be reduced, so as to reduce the wear caused by the collision between the brake oil pipe 281 and other components, thereby improving the service life of the brake oil pipe 281. The fastener 282 may be a pipe clamp sleeved on the brake oil pipe 281 , or may be other connecting parts. It is only necessary that the fastener 282 can fix the brake oil pipe 281 to the shock-absorbing mounting bracket 1424 .

[0068] Specifically, the oil pipe fixing hole 1424c is located in front of or behind the weight-reducing hole 1424b. That is, the position of the oil pipe fixing hole 1424c can be adjusted according to the position of the weight-reducing hole 1424b. In the present application, the oil pipe fixing hole 1424c is located behind the weight-reducing hole 1424b.

[0069] As an implementation method, the shock-absorbing mounting bracket 1424 includes an integrally formed bottom plate 1424d and two side plates 1424e, the two side plates 1424e are distributed on both sides of the bottom plate 1424d along the width direction of the electric two-wheeled vehicle 100, and the shock-absorbing mounting bracket 1424 is directly fixedly connected to the rocker arm body 1422 through the bottom plate 1424d. The shock-absorbing mounting hole 1424a and the weight-reducing hole 1424b are both located on the side plate 1424e. Among them, the connection point between the shock absorber 143 and the shock-absorbing mounting bracket 1424 is located between the two side plates 1424e, so that the connection between the shock absorber 143 and the shock-absorbing mounting bracket 1424 is more stable.

[0070] Specifically, the bottom plate 1424d is fixedly connected to the shield mounting bracket 1423 and the rocker arm body 1422, respectively. Due to the installation requirements of the shock absorber 143, the width of the bottom plate 1424d along the width direction of the electric two-wheeled vehicle 100 is greater than the width of the rocker arm body 1422 along the width direction of the electric two-wheeled vehicle 100, that is, the bottom plate 1424d at least partially exceeds the edge of the rocker arm body 1422 in the width direction of the electric two-wheeled vehicle 100, and the part of the bottom plate 1424d that exceeds the edge of the rocker arm body 1422 is defined as a protrusion, which is fixedly connected to the shield mounting bracket 1423, and the part of the bottom plate 1424d that does not exceed the edge of the rocker arm body 1422 is fixedly connected to the rocker arm body 1422. Therefore, the bottom plate 1424d can be supported by the shield mounting bracket 1423, so that the structural strength of the shock absorbing mounting bracket 1424 can be improved, which is conducive to the normal operation of the shock absorber 143.

[0071] As an implementation method, the shield mounting bracket 1423 is provided with a shield mounting hole 1423a, and the side shield 127 is connected to the shield mounting hole 1423a through a fastener. The fastener can be a bolt, which passes through the side shield 127 and the shield mounting hole 1423a and is connected to a nut, thereby achieving the connection between the side shield 127 and the shield mounting bracket 1423.

[0072] Optionally, the shield mounting bracket 1423 includes a connecting nut 1423b, which is at least partially located in the shield mounting hole 1423a and connected to the shield mounting hole 1423a. The fastener passes through the side shield 127 and is connected to the connecting nut 1423b, so that the fastener does not need an additional nut to be connected, thereby improving the assembly efficiency of the fastener, and further improving the assembly efficiency between the side shield 127 and the shield mounting bracket 1423. The connecting nut 1423b and the shield mounting hole 1423a can be connected by a fixing method such as welding.

[0073] Specifically, the shield mounting bracket 1423 includes a support portion 1423c, a connection portion 1423d and a mounting portion 1423e. The support portion 1423c, the connection portion 1423d and the mounting portion 1423e are integrally formed. Along the height direction of the electric two-wheeled vehicle 100, the mounting portion 1423e is located between the support portion 1423c and the connection portion 1423d. The support portion 1423c is connected to the upper portion of the rocker arm body 1422, the support portion 1423c is also connected to the shock-absorbing mounting bracket 1424, the connection portion 1423d is connected to the lower portion of the rocker arm body 1422, and the shield mounting hole 1423a is opened in the mounting portion 1423e.

[0074] More specifically, the support portion 1423c, the connecting portion 1423d and the mounting portion 1423e are all plate-like structures, one end of the support portion 1423c is connected to the upper portion of the rocker arm body 1422, one end of the connecting portion 1423d is connected to the lower portion of the rocker arm body 1422, and the mounting portion 1423e, one end of the support portion 1423c away from the rocker arm body 1422, and one end of the connecting portion 1423d away from the rocker arm body 1422 are integrally formed, thereby increasing the width of the support portion 1423c along the width direction of the electric two-wheeled vehicle 100, and further increasing the contact area between the support portion 1423c and the shock-absorbing mounting bracket 1424, so as to increase the supporting force of the support portion 1423c on the shock-absorbing mounting bracket 1424, which is beneficial to improving the connection stability of the shock-absorbing mounting bracket 1424.

[0075] like Figure 8 , Fig. 9 and Fig.10 As shown, as an implementation method, the drive assembly 15 includes a hub motor 151, which is connected to the frame 11 through the rear swing arm 142, and the rear wheel 132 is mounted on the hub motor 151 and connected to the hub motor 151, so that the hub motor 151 can serve as a support for the rear wheel 132 and drive the rear wheel 132 to rotate.

[0076] Specifically, the hub motor 151 includes a hub shell 1511 , a motor body 1512 and two end covers 1513 .

[0077] The wheel hub shell 1511 is used as the outer shell of the wheel hub motor 151 to support the rear wheel 132, that is, the rear wheel 132 is installed on the wheel hub shell 1511. The wheel hub shell 1511 is annular and is distributed around the motor body 1512 in the circumferential direction.

[0078] The motor body 1512 is at least partially located in the wheel hub shell 1511, and the motor body 1512 is at least partially connected to the wheel hub shell 1511, so that the motor body 1512 can drive the wheel hub shell 1511 to drive the rear wheel 132 to rotate relative to the rear swing arm 142. The motor body 1512 is electrically connected to the power battery 16, so that the power battery 16 provides energy for the motor body 1511, so that the motor body 1512 can output power to the rear wheel 132.

[0079] The two end covers 1513 are respectively located on the left and right sides of the motor body 1512 and are respectively fixedly connected to the left and right sides of the wheel hub shell 1511, that is, the two end covers 1513 are distributed along the width direction of the electric two-wheeled vehicle 100. The two end covers 1513 are used to close the wheel hub shell 1511, so as to protect the motor body 1512 in the wheel hub shell 1511. The two end covers 1513 are also rotatably connected to the rear swing arm 142, so that the wheel hub motor 151 can rotate relative to the rear swing arm 142, thereby realizing the rotation of the rear wheel 132.

[0080] In the present application, a side of the end cover 1513 close to the motor body 1512 is convex toward a side away from the motor body 1512 to form a recessed portion 1513 b.

[0081] Specifically, the structure of the recessed portion 1513b can disperse the stress of the end cover 1513, thereby improving the structural strength of the end cover 1513; at the same time, by setting the recessed portion 1513b, the structural strength of the end cover 1513 can be improved without increasing the thickness of the end cover 1513, thereby achieving the lightweight of the end cover 1513. In addition, through the above-mentioned setting, the impact resistance of the end cover 1513 can also be improved, thereby improving the protective effect of the end cover 1513 on the motor body 1512.

[0082] It should be noted that the formation of the recessed portion 1513b does not change the thickness of the end cover 1513, but only makes the side of the end cover 1513 close to the motor body 1512 recessed, and the side of the end cover 1513 away from the motor body 1512 convex. Therefore, the maximum recessed depth D1 of the recessed portion 1513b along the axial direction of the hub motor 151 cannot be too large, so as to avoid the structural strength of the end cover 1513 being unable to meet the use requirements. The maximum recessed depth D1 of the recessed portion 1513b along the axial direction of the hub motor 151 cannot be too small, so as to avoid the impact resistance of the end cover 1513 being too small and the stress being too concentrated.

[0083] like Fig. 9 and Fig.10As shown, in order to avoid the above situation, in the present application, the maximum recessed depth D1 of the recessed portion 1513b along the axial direction of the hub motor 151 is greater than or equal to 4 mm and less than or equal to 6 mm. Specifically, the maximum recessed depth D1 of the recessed portion 1513b along the axial direction of the hub motor 151 is greater than or equal to 4.5 mm and less than or equal to 5.5 mm. More specifically, the maximum recessed depth D1 of the recessed portion 1513b along the axial direction of the hub motor 151 is 5 mm. Through the above arrangement, it is possible to avoid the maximum recessed depth D1 of the recessed portion 1513b being too large or too small, thereby improving the impact resistance of the end cover 1513 while meeting the structural strength of the end cover 1513, and dispersing the stress of the end cover 1513 to prevent the end cover 1513 from being damaged or broken by force, etc., while also achieving lightweighting of the end cover 1513.

[0084] Specifically, each end cover 1513 is provided with a plurality of reinforcing ribs 1513a, and the reinforcing ribs 1513a are used to improve the structural strength of the two end covers 1513. The reinforcing ribs 1513a extend along the radial direction of the hub motor 151; the recessed portion 1513b and the reinforcing ribs 1513a can jointly improve the structural strength of the end cover 1513.

[0085] like Fig.10 As shown, illustratively, in order to make the force on the end cover 1513 uniform, the multiple reinforcing ribs 1513a of the present application are evenly distributed around the rotation axis of the rear wheel 132.

[0086] As an implementation method, the reinforcing rib 1513a divides the recessed portion 1513b into a plurality of reinforcing units 1515 of substantially equal size. A middle reinforcing rib 1513c is further provided in the reinforcing unit 1515, and the middle reinforcing rib 1513c divides the reinforcing unit 1515 into a first area 1515a and a second area 1515b.

[0087] Exemplarily, the number of reinforcing ribs 1513a is consistent with the number of reinforcing units 1515, and the number of reinforcing ribs 1513a is also consistent with the number of middle reinforcing ribs 1513c. The total number of reinforcing ribs 1513a and middle reinforcing ribs 1513c on each end cover 1513 may be greater than or equal to 8 and less than or equal to 12. Specifically, the total number of reinforcing ribs 1513a and middle reinforcing ribs 1513c on each end cover 1513 may be 10, thereby avoiding the structural strength of the end cover 1513 being insufficient due to the total number of reinforcing ribs 1513a and middle reinforcing ribs 1513c being too small, and avoiding the weight of the end cover 1513 being too heavy due to the total number of reinforcing ribs 1513a and middle reinforcing ribs 1513c being too large, thereby achieving lightweighting of the end cover 1513 while improving the structural strength of the end cover 1513.

[0088] Since the rotation axis of the rear wheel 132 of the present application basically extends along the width direction of the electric two-wheeled vehicle 100 , the longitudinal plane 101 of the present application is also perpendicular to the rotation axis of the rear wheel 132 .

[0089] Exemplarily, the projection of the first area 1515a along the width direction of the electric two-wheeled vehicle 100 on the longitudinal plane 101 is defined as a first projection surface, and the projection of the second area 1515b along the width direction of the electric two-wheeled vehicle 100 on the longitudinal plane 101 is defined as a second projection surface, and the area of ​​the first projection surface is greater than the area of ​​the second projection surface. Through the above arrangement, the convex areas of the first area 1515a and the second area 1515b can be made inconsistent, so that the staggered first area 1515a and the second area 1515b can be formed to prevent the shapes of the first projection surface and the second projection surface from being consistent, thereby avoiding the concentration of processing stress of the end cover 1513 when processing the recessed portion 1513b, so as to improve the structural strength of the recessed portion 1513b.

[0090] It can be understood that the shape of the first projection surface may be different from the shape of the second projection surface, so that the structural strength of the recessed portion 1513b can be further improved by the first area 1515a and the second area 1515b having different shapes.

[0091] In this embodiment, the projection of the rotation axis of the rear wheel 132 along the width direction of the electric two-wheeled vehicle 100 on the longitudinal plane 101 is defined as the rear wheel axle projection point, the first projection surface is basically fan-shaped, and the center of the first projection surface is basically coincident with the rear wheel axle projection point; the second projection surface is basically quadrilateral, and the side of the second projection surface away from the rear wheel axle projection point is defined as the outer edge, and the minimum distances between the two ends of the outer edge of the second projection surface and the rear wheel axle projection point are respectively the first distance D2 and the second distance D3, and the first distance D2 is greater than the second distance D3.

[0092] Through the above arrangement, the area of ​​the first projection surface can be different from the area of ​​the second projection surface, and the shape of the first projection surface can be different from the shape of the second projection surface, so that the structural strength of the recessed portion 1513b is improved.

[0093] Specifically, the ratio of the maximum diameter R1 of the first projection surface to the outer diameter R2 of the hub motor 151 is greater than or equal to 0.54 and less than or equal to 0.83. Specifically, the ratio of the maximum diameter R1 of the first projection surface to the outer diameter R2 of the hub motor 151 is greater than or equal to 0.61 and less than or equal to 0.76. More specifically, the ratio of the maximum diameter R1 of the first projection surface to the outer diameter R2 of the hub motor 151 is 0.68. Through the above-mentioned setting, it is possible to avoid the diameter R1 of the outer contour of the first projection surface away from the motor projection point being too large, causing the first area 1515a to be too close to the edge of the end cover 1513, thereby avoiding reducing the structural strength of the end cover 1513; it is also possible to avoid the diameter R1 of the outer contour of the first projection surface away from the motor projection point being too small, causing the first area 1515a to be too small, thereby avoiding the first area 1515a to be too small, which is not conducive to achieving the lightweight of the end cover 1513 and improving the impact resistance of the end cover 1513.

[0094] More specifically, in order to reduce the difficulty of processing the recessed portion 1513b, the first distance D2 of the present application is substantially consistent with the maximum radius of the first projection surface, that is, the first distance D2 is half of the maximum diameter R1 of the first projection surface.

[0095] Exemplarily, the ratio of the second distance D3 to the outer diameter R2 of the hub motor 151 is greater than or equal to 0.22 and less than or equal to 0.34. Specifically, the ratio of the second distance D3 to the outer diameter R2 of the hub motor 151 is greater than or equal to 0.25 and less than or equal to 0.31. More specifically, the ratio of the second distance D3 to the outer diameter R2 of the hub motor 151 is 0.28. Through the above-mentioned setting, it is possible to avoid the second distance D3 being too large, causing the second area 1515b to be too close to the edge of the end cover 1513, thereby avoiding reducing the structural strength of the end cover 1513; it is also possible to avoid the second distance D3 being too small, causing the second area 1515b to be too small, thereby avoiding the second area 1515b to be too small, which is not conducive to achieving the lightweight of the end cover 1513 and improving the impact resistance of the end cover 1513.

[0096] like Fig.11 As shown, in the present application, the wheel hub shell 1511 includes a wheel hub outer ring 1511a and a wheel hub inner ring 1511b, the wheel hub outer ring 1511a is sleeved on the wheel hub inner ring 1511b and fixedly connected to the wheel hub inner ring 1511b, the rear wheel 132 is sleeved on the wheel hub outer ring 1511a and connected to the wheel hub outer ring 1511a, and the two end covers 1513 are respectively fixedly connected to the left and right sides of the wheel hub inner ring 1511b. Specifically, the wheel hub inner ring 1511b can be connected to the wheel hub outer ring 1511a by a fixing method such as welding; the connection method between the rear wheel 132 and the wheel hub outer ring 1511a is a common method, which will not be repeated in this application.

[0097] Specifically, both left and right sides of the wheel hub inner ring 1511b are provided with end cover connection holes 1511c, and both end covers 1513 are fixedly connected to the end cover connection holes 1511c by fasteners. The end cover connection holes 1511c may be threaded holes, and the edges of the two end covers 1513 may be provided with through holes matching the threaded holes, so that the two end covers 1513 can be connected to the wheel hub inner ring 1511b by fasteners such as bolts.

[0098] It should be noted that threaded holes may also be provided at the edges of the two end covers 1513 , so as to further improve the connection stability between the end covers 1513 and the wheel hub inner ring 1511 b .

[0099] like Figure 8 and Fig.12 As shown, the front wheel 131 further includes a rim 1311 and a front tire 1312, and the rim 133 is used to mount the front tire 1312 so that the rim 133 can support the front wheel 131. The rim 1311 is connected to the frame 11 through the front suspension 141 so that the front wheel 131 can be connected to the frame 11 through the front suspension 141.

[0100] Specifically, the rim 1311 includes an outer rim ring 1311a, an inner rim ring 1311b, and a plurality of supporting mechanisms 1311d. The front tire 1312 is mounted on the outer rim ring 1311a, the inner rim ring 1311b is rotatably connected to the front suspension 141, and the plurality of supporting mechanisms 1311d are located between the outer rim ring 1311a and the inner rim ring 1311b, so that the plurality of supporting mechanisms 1311d can be used to connect with the outer rim ring 1311a and the inner rim ring 1311b, so that the front wheel 131 can rotate relative to the front suspension 141. More specifically, the outer rim ring 1311a is arranged around the circumference of the inner rim ring 1311b.

[0101] Among them, each supporting mechanism 1311d includes a first branch portion 1311e, a second branch portion 1311f and a branch portion 1311g extending radially along the rim 1311, the branch portion 1311g is evenly distributed along the circumference of the rim inner ring 1311b and is fixedly connected to the rim inner ring 1311b, the first branch portion 1311e and the second branch portion 1311f are located between the branch portion 1311g and the rim outer ring 1311a, and one end of the first branch portion 1311e and the second branch portion 1311f is fixedly connected to the rim outer ring 1311a, and the other end of the first branch portion 1311e and the second branch portion 1311f is fixedly connected to the branch portion 1311g. Through the above arrangement, the connection point of the support mechanism 1311d connecting the rim outer ring 1311a can be changed from one to two, so that the impact force exerted on the rim outer ring 1311a can be dispersed by the first branch portion 1311e and the second branch portion 1311f, so that the force on the rim 1311 can be balanced, thereby improving the service life of the rim 1311.

[0102] In this embodiment, the ratio of the length D4 of the branch portion 1311g along the radial direction of the rim 1311 to the diameter R3 of the rim 1311 is greater than or equal to 0.12 and less than or equal to 0.2. Specifically, the ratio of the length D4 of the branch portion 1311g along the radial direction of the rim 1311 to the diameter R3 of the rim 1311 is greater than or equal to 0.14 and less than or equal to 0.18. More specifically, the ratio of the length D4 of the branch portion 1311g along the radial direction of the rim 1311 to the diameter R3 of the rim 1311 is 0.16. Through the above arrangement, it is possible to avoid that the length of the branch portion 1311g is too short, which causes the length D4 of the first branch portion 1311e and the second branch portion 1311f in the radial direction of the rim 1311 is too long, so that when the first branch portion 1311e and the second branch portion 1311f are subjected to force, it is possible to avoid that the first branch portion 1311e and the second branch portion 1311f are too long, which causes excessive force, and further avoids the first branch portion 1311e and the second branch portion 1311f from breaking, thereby improving the service life of the rim 1311. In addition, through the above arrangement, it is possible to avoid that the length of the branch portion 1311g is too long, which causes the space utilization rate and weight of the branch portion 1311g to be too large, thereby improving the space utilization rate of the rim 1311 and achieving lightweighting of the rim 1311.

[0103] As an implementation method, the first branch portion 1311e extends substantially along the direction of the first straight line 105, the second branch portion 1311f extends substantially along the direction of the second straight line 106, the angle α between the first straight line 105 and the second straight line 106 is greater than or equal to 66° and less than or equal to 100°, wherein the opening of the angle α is away from the branch portion 1311g. Specifically, the angle α between the first straight line 105 and the second straight line 106 is greater than or equal to 74° and less than or equal to 92°. More specifically, the angle α between the first straight line 105 and the second straight line 106 is 83°. Through the above arrangement, when viewed from the axial direction of the rim 1311, the support mechanism 1311d can be substantially "Y"-shaped. The "Y"-shaped support mechanism 1311d can reduce the weight of the support mechanism 1311d while improving the impact resistance of the rim outer ring 1311a and the rim inner ring 1311b, thereby achieving lightweighting of the rim 1311 while satisfying the structural strength of the rim 1311.

[0104] In addition, taking the first branch portion 1311e as an example, since the impact force of the external environment on the rim outer ring 1311a is directed to the axis of the rim 1311, the definition is as follows: Fig.12 The impact force of the external environment on the rim outer ring 1311a is shown as F1. Due to the existence of the first branch portion 1311e, F1 is divided into a component force F2 along the extending direction of the first branch portion 1311e and a component force F3 perpendicular to the extending direction of the first branch portion 1311e.

[0105] When the angle α between the first straight line 105 and the second straight line 106 is too large, the component force F3 will be too large, so that the connection between the first branch portion 1311e and the rim outer ring 1311a is subjected to excessive force, thereby causing the connection between the first branch portion 1311e and the rim outer ring 1311a to break.

[0106] When the angle α between the first straight line 105 and the second straight line 106 is too small, the component force F2 will be too large, so that the first branch portion 1311e cannot disperse the force brought by F1, which is not conducive to dispersing the impact force on the supporting mechanism 1311d and improving the structural strength of the supporting mechanism 1311d.

[0107] Therefore, through the above arrangement, the forces acting on the support mechanism 1311d can be balanced, and there is no need to increase the volume of the support mechanism 1311d to improve the structural strength of the support mechanism 1311d, thereby further achieving lightweighting of the support mechanism 1311d.

[0108] Optionally, in order to improve the structural strength of the first branch portion 1311e and the second branch portion 1311f, the support mechanism 1311d also includes a reinforcement portion 1311h, which is located between the first branch portion 1311e and the second branch portion 1311f, and the reinforcement portion 1311h is fixedly connected to the first branch portion 1311e and the second branch portion 1311f, respectively.

[0109] Specifically, the reinforcement portion 1311h basically extends along a preset arc 108, and the center of the preset arc 108 is located on the rotation axis of the front wheel 131, so that the force direction of the reinforcement portion 1311h is basically consistent with the force direction of the rim outer ring 1311a, thereby improving the structural strength of the support mechanism 1311d.

[0110] More specifically, the reinforcing portion 1311h is fixedly connected to the middle portion of the first branch portion 1311e and the middle portion of the second branch portion 1311f, respectively, so that the reinforcing portion 1311h has basically the same effect of reinforcing the structural strength at both ends of the first branch portion 1311e, and has basically the same effect of reinforcing the structural strength at both ends of the second branch portion 1311f.

[0111] As an implementation method, a hollow portion 1311k is provided on the branch stem 1311g and penetrates the branch stem 1311g. The hollow portion 1311k can reduce the weight of the branch stem 1311g to achieve lightweight branch stem 1311g.

[0112] Since in the present application, the axis of the rim 1311 substantially extends along the width direction of the electric two-wheeled vehicle 100, the longitudinal plane 101 (refer to Fig.10) is also perpendicular to the axis of the rim 1311. The projection of the hollow portion 1311k on the longitudinal plane 101 along the width direction of the electric two-wheeled vehicle 100 is defined as a hollow projection, and the projection of the branch 1311g on the longitudinal plane 101 along the width direction of the electric two-wheeled vehicle 100 is defined as a branch projection, and the ratio of the area of ​​the hollow projection to the area of ​​the branch projection is greater than or equal to 0.08 and less than or equal to 0.13. Specifically, the ratio of the area of ​​the hollow projection to the area of ​​the branch projection is greater than or equal to 0.09 and less than or equal to 0.12. More specifically, the ratio of the area of ​​the hollow projection to the area of ​​the branch projection is 0.1. Through the above-mentioned settings, it is possible to avoid the area of ​​the hollow projection being too large to reduce the structural strength of the branch 1311g, and it is also possible to avoid the area of ​​the hollow projection being too small to reduce the weight reduction effect of the branch 1311g, thereby achieving lightweighting of the branch 1311g while satisfying the structural strength of the branch 1311g.

[0113] Exemplarily, the number of the supporting mechanisms 1311d is greater than or equal to 5 and less than or equal to 6. Through the above arrangement, it is possible to avoid an increase in the weight of the rim 1311 due to an excessive number of supporting mechanisms 1311d, and it is also possible to avoid a reduction in the structural strength of the supporting mechanisms 1311d due to an insufficient number of supporting mechanisms 1311d, so that the supporting function of the supporting mechanisms 1311d on the rim outer ring 1311a and the rim inner ring 1311b can be satisfied, that is, the structural strength of the rim 1311 can be satisfied, and at the same time, the weight of the rim 1311 can be reduced by the supporting mechanisms 1311d, so as to achieve lightweighting of the rim 1311.

[0114] In the present application, in order to balance the force on the rim 1311 , the branch portions 1311 g of the present application are evenly distributed around the rotation axis of the front wheel 131 .

[0115] As an implementation method, the first branch portion 1311e and the second branch portion 1311f of any supporting mechanism 1311d are basically symmetrically arranged with respect to the branch portion 1311g of the supporting mechanism 1311d, so that the supporting mechanism 1311d has a symmetrical structure, which is beneficial to improving the balance and force uniformity of the rim 1311.

[0116] Optionally, the inner ring 1311b of the rim at least partially extends along the axial direction of the rim 1311 to form a reinforcement structure 1311c (see Figure 8 ), the braking system 28 also includes a brake disc (not shown), which is located on the reinforcement structure 1311c and fixedly connected to the reinforcement structure 1311c, thereby improving the connection stability between the rim 1311 and the brake disc, and further improving the braking safety of the braking system 28.

[0117] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all these improvements and changes should fall within the scope of protection of the claims attached to this application.

Claims

1. An electric two-wheeled vehicle, comprising: Frame; a body panel at least partially located on the frame; A traveling assembly, the traveling assembly comprising a rear wheel, the rear wheel being at least partially located below the frame; A suspension assembly, the suspension assembly comprising a rear swing arm and a shock absorber; A drive assembly, the drive assembly is supported by the frame and drivingly connected to the rear wheel; It is characterized in that The rear swing arm is located between the rear wheel and the frame, and the shock absorber is located between the frame and the rear swing arm; the rear swing arm includes a swing arm body, a shield mounting bracket and a shock absorber mounting bracket, the shield mounting bracket is located on the swing arm body and is fixedly connected to the swing arm body, and the shock absorber mounting bracket is located above the shield mounting bracket and is fixedly connected to the swing arm body; one end of the shock absorber away from the frame is rotatably connected to the shock absorber mounting bracket; the body cover includes a side shield, and the side shield is fixedly connected to the shield mounting bracket.

2. The electric two-wheeled vehicle according to claim 1, characterized in that: A longitudinal plane perpendicular to the width direction of the electric two-wheeled vehicle and passing through the width center of the electric two-wheeled vehicle is defined, the side guard is located on the side of the rear swing arm away from the longitudinal plane, and when viewed along the width direction of the electric two-wheeled vehicle, the side guard basically overlaps with the swing arm body.

3. The electric two-wheeled vehicle according to claim 1, characterized in that: The shock-absorbing mounting bracket is provided with a shock-absorbing mounting hole and a weight-reducing hole. The shock absorber is rotatably connected to the shock-absorbing mounting hole through a fastener. The weight-reducing hole is located below the shock-absorbing mounting hole.

4. The electric two-wheeled vehicle according to claim 3, characterized in that: A longitudinal plane perpendicular to the width direction of the electric two-wheeled vehicle and passing through the width center of the electric two-wheeled vehicle is defined, the projection of the shock-absorbing mounting bracket along the width direction on the longitudinal plane is defined as a bracket projection, the projection of the weight-reducing hole along the width direction on the longitudinal plane is defined as a weight-reducing projection, and the ratio of the area of ​​the weight-reducing projection to the area of ​​the bracket projection is greater than or equal to 0.12 and less than or equal to 0.

19.

5. The electric two-wheeled vehicle according to claim 3, characterized in that: The shock-absorbing mounting bracket is provided with an oil pipe fixing hole, the electric two-wheeled vehicle comprises a brake oil pipe, the brake oil pipe is basically arranged along the extension direction of the rocker arm body, and the brake oil pipe is clamped with the oil pipe fixing hole through a fastener.

6. The electric two-wheeled vehicle according to claim 5, characterized in that: The oil pipe fixing hole is located in front of or behind the weight-reducing hole.

7. The electric two-wheeled vehicle according to claim 3, characterized in that: The shock-absorbing mounting bracket includes an integrally formed bottom plate and two side plates, the two side plates are distributed on both sides of the bottom plate along the width direction of the electric two-wheeled vehicle, the shock-absorbing mounting is directly fixedly connected to the rocker arm body through the bottom plate, and the shock-absorbing mounting hole and the weight-reducing hole are both located on the side plates.

8. The electric two-wheeled vehicle according to claim 7, characterized in that: The bottom plate is fixedly connected to the guard cover mounting bracket and the rocker arm body respectively.

9. The electric two-wheeled vehicle according to claim 1, characterized in that: The shield mounting bracket is provided with a shield mounting hole, and the side shield is connected to the shield mounting hole through a fastener.

10. The electric two-wheeled vehicle according to claim 9, characterized in that: The guard mounting bracket includes a supporting portion, a connecting portion and a mounting portion, wherein the mounting portion is located between the supporting portion and the connecting portion, the supporting portion is connected to the upper portion of the rocker arm body, the shock absorbing mounting bracket is connected to the supporting portion, the connecting portion is connected to the lower portion of the rocker arm body, and the guard mounting hole is opened in the mounting portion.

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