Electric two-wheeled vehicle

Abstract

The invention discloses an electric two-wheeled vehicle. The electric two-wheeled vehicle comprises a frame; the suspension mechanism comprises a rear bottom fork and a shock absorber; the shock absorber comprises a first connecting end and a second connecting end, a plane perpendicular to the height direction of the electric two-wheeled vehicle is defined as a reference plane, the projection of the first connecting end on the reference plane in the height direction is a first projection point, and the projection of the axis of the front wheel on the reference plane in the height direction is a second projection point. The distance between the first projection point and the second projection point is projection length D1; the projection of the second connecting end on the reference plane in the height direction is a third projection point, the projection of the leftmost point of the outer edge of the rear wheel on the reference plane in the height direction is a fourth projection point, the distance between the third projection point and the fourth projection point is the projection length D2, and the ratio of the projection length D1 to the projection length D2 is larger than or equal to 62 and smaller than or equal to 123. Through the arrangement, the shock absorber is small in occupied space and compact in arrangement.

Description

Technical Field

[0001] The present invention relates to an electric vehicle, in particular to an electric two-wheeled vehicle. Background Art

[0002] As society pays more and more attention to environmental protection and energy conservation, electric two-wheeled vehicles, as green, energy-saving and emission-reducing means of transportation, have played an increasingly important role in public transportation.

[0003] The shock absorbers of electric two-wheelers support the weight of the frame, mitigating vibrations and impacts caused by uneven roads. They quickly dampen vibrations, improving riding comfort, reducing dynamic stresses on various vehicle components, and extending vehicle life. As electric two-wheelers become increasingly smaller and lighter, space is shrinking. Therefore, how to more compactly arrange shock absorbers has been a pressing issue in the electric two-wheeler industry. Summary of the Invention

[0004] In order to solve the above problems, the present application provides an electric two-wheeled vehicle with a compact shock absorber arrangement.

[0005] In order to achieve the above objectives, this application adopts the following technical solutions:

[0006] An electric two-wheeled vehicle comprises: a frame; a running mechanism, the running mechanism comprises a front wheel and a rear wheel, and the front wheel and the rear wheel are at least partially arranged on the frame; a suspension mechanism, the suspension mechanism comprises a rear fork and a shock absorber, one end of the shock absorber is connected to the frame and the other end is connected to the rear fork; a battery assembly, the battery assembly is at least partially arranged on the frame; a body cover, the body cover at least partially covers the battery assembly; wherein the shock absorber comprises a first connecting end and a second connecting end, the first connecting end is arranged on the frame, and the second connecting end is arranged on the rear fork, defining a plane perpendicular to the height direction of the electric two-wheeled vehicle. The surface is the reference plane, the projection of the first connecting end on the reference plane along the height direction is the first projection point, the projection of the axis of the front wheel on the reference plane along the height direction is the second projection point, and the distance between the first projection point and the second projection point is the projection length D1; the projection of the second connecting end on the reference plane along the height direction is the third projection point, the projection of the leftmost point of the outer edge of the rear wheel on the reference plane along the height direction is the fourth projection point, the distance between the third projection point and the fourth projection point is the projection length D2, and the ratio of the projection length D1 to the projection length D2 is greater than or equal to 62 and less than or equal to 123.

[0007] Furthermore, the ratio of the projection length D1 to the projection length D2 is greater than or equal to 80 and less than or equal to 110.

[0008] Furthermore, the ratio of the projection length D1 to the projection length D2 is greater than or equal to 90 and less than or equal to 100.

[0009] Furthermore, the line connecting the axis of the front wheel to the axis of the rear wheel is a first straight line. On a projection plane perpendicular to the left-right direction, the angle β between the projection of the axis of the shock absorber along the left-right direction on the projection plane and the projection of the first straight line along the left-right direction on the projection plane is greater than or equal to 60° and less than or equal to 80°.

[0010] Furthermore, the vehicle frame includes a connecting bracket, the shock absorber is arranged on the connecting bracket, and the electric two-wheeled vehicle also includes a seat cushion, and the connecting bracket is at least partially arranged below the seat cushion.

[0011] Furthermore, the frame also includes a supporting vertical tube and a supporting cross tube. The supporting vertical tube includes a first supporting vertical tube, a second supporting vertical tube and a third supporting vertical tube. The first supporting vertical tube, the second supporting vertical tube and the third supporting vertical tube form a accommodating space. The supporting cross tube is arranged between the second supporting vertical tube and the third supporting vertical tube. The connecting bracket is arranged on the supporting cross tube.

[0012] Furthermore, the connecting bracket extends from the supporting transverse tube toward the front of the vehicle, and the connection point between the first connecting end and the connecting bracket is located in an accommodating space formed by the first supporting vertical tube, the second supporting vertical tube, and the third supporting vertical tube.

[0013] Furthermore, the suspension mechanism also includes a connecting member, the running mechanism includes a rear wheel, the rear wheel is connected to the frame through a rear flat fork, an accommodating space is formed at one end of the rear flat fork connected to the rear wheel, the connecting member is at least partially arranged in the accommodating space, and the rear wheel axle is passed through the rear flat fork and the connecting member.

[0014] Furthermore, the rear flat fork includes a connecting portion, the shock absorber is arranged on the connecting portion, and the electric two-wheeled vehicle also includes a seat cushion, and the connecting portion is arranged at least behind the seat cushion.

[0015] Furthermore, a plane perpendicular to the height direction of the electric two-wheeled vehicle is defined as a reference plane, the projection of the first connection end along the height direction on the projection plane is projection point A, the projection of the second connection end along the height direction on the projection plane is projection point B, and projection point A is located in front of projection point B.

[0016] The electric two-wheeled vehicle provided in this application is provided with a shock absorber, one end of which is connected to the vehicle frame and the other end is connected to the rear wheel via a rear fork. A plane perpendicular to the height direction of the electric two-wheeled vehicle is defined as a reference plane. The upper connecting end, lower connecting end, front wheel axle center, and the projection point of the leftmost point of the rear wheel outer edge of the shock absorber on the reference plane have a special positional relationship. The ratio of the projection length D1 to the projection length D2 is greater than or equal to 62 and less than or equal to 123. With this configuration, the shock absorber occupies a smaller space, thereby making the layout of the electric two-wheeled vehicle compact. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a perspective view of the electric two-wheeled vehicle of the present application;

[0018] Figure 2 It is a schematic diagram of the connection between the frame and the suspension mechanism of the present application;

[0019] Figure 3 It is a structural diagram of the main frame of the present application;

[0020] Figure 4 is a schematic diagram of the three-dimensional structure of the main frame of the present application from another perspective;

[0021] Figure 5 This application Figure 2 Schematic diagram of the enlarged structure at A in the middle;

[0022] Figure 6 It is a structural diagram of the support frame assembly of the present application;

[0023] Figure 7 This is a schematic diagram of the connection between the rear fork and the rear wheel of the present application;

[0024] Figure 8 is a schematic diagram of the three-dimensional structure of the frame of the present application from another perspective;

[0025] Figure 9 It is a schematic diagram of the three-dimensional structure of the seat cushion device of the present application;

[0026] Figure 10 This application Figure 9 Schematic diagram of the enlarged structure at B in the middle;

[0027] Figure 11 This is a schematic diagram of the structure of the seat lock assembly of the present application on an electric two-wheeled vehicle;

[0028] Figure 12 is a cross-sectional view of the seat cushion cable of the present application;

[0029] Figure 13 is a schematic structural diagram of the front lighting assembly of the present application;

[0030] Figure 14 is a schematic structural diagram of the rear lighting assembly of the present application;

[0031] Figure 15 It is a schematic diagram of the three-dimensional structure of the rear wheel of the present application. DETAILED DESCRIPTION

[0032] In order to help those skilled in the art better understand the present invention, the following will clearly and completely describe the technical solutions in the specific embodiments of the present invention in conjunction with the accompanying drawings. It should be understood that those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the scope of protection of the claims attached to this application.

[0033] like Figure 1 、 Figure 2 、 Figure 11 As shown, the present application provides an electric two-wheeled vehicle 100, which includes a frame 11, a suspension mechanism 12, a running mechanism 13, a seat device 14, a body cover 15, a lighting mechanism 16 and a battery assembly 17. The frame 11 is used to form an overall structure and support the battery assembly 17 and the body cover 15. The running mechanism 13 is connected to the frame 11 through the suspension mechanism 12 to drive the electric two-wheeled vehicle 100 to travel. The seat device 14 is at least partially connected to the frame 11 and can be used for the driver to sit on. The battery assembly 17 is at least partially arranged in the space formed by the frame 11, and the body cover 15 covers the frame 11 to isolate other components in the frame 11 from the outside world, and at the same time protect the equipment and structure inside the vehicle. The lighting mechanism 16 provides lighting, turn indication signals and warning signals for the electric two-wheeled vehicle 100. The battery assembly 17 provides electrical energy to the electric two-wheeled vehicle 100 for driving the electric two-wheeled vehicle 100. In order to clearly illustrate the technical solution of the present application, the following are also defined. Figure 1 Front, back, top, bottom, left and right sides shown.

[0034] like Figures 1 to 4As shown, the frame 11 includes a main frame 111 and a subframe 112. The main frame 111 includes a main beam tube 1111, a support vertical tube 1112, a reinforcement assembly 1113, and a support plate 1114. Specifically, the main beam tube 1111 is configured to extend from the front to the rear of the electric two-wheeled vehicle 100 in the front-to-back direction. The two ends of the main beam tube 1111 extend upward, and a recessed portion 1111a is formed downward in the middle. The support vertical tube 1112 includes a first support vertical tube 1112a, a second support vertical tube 1112b, and a third support vertical tube 1112c. The first support vertical tube 1112a, the second support vertical tube 1112b, and the third support vertical tube 1112c are respectively arranged in the middle and rear of the main beam tube 1111. The support plate 1114 is arranged in the recessed portion 1111a to widen the width of the recessed portion 1111a to facilitate supporting the driver's feet. The first, second, and third vertical support tubes 1112a, 1112b, 1112c extend vertically. The subframe 112 is disposed at the upper ends of the first, second, and third vertical support tubes 1112a, 1112b, 1112c, and surrounds the first, second, and third vertical support tubes 1112a, 1112b, 1112c to form a storage space. The battery assembly 17 is at least disposed within this storage space.

[0035] As an optional embodiment, the support plates 1114 extend in the left-right direction and are substantially symmetrical about the main beam tube 1111 in this direction. As an embodiment, the number of support plates 1114 can be set to two. It is understood that the number of support plates 1114 can also be any other reasonable number, such as one or three, as long as the support strength required by the driver's feet during riding is sufficient. The running mechanism 13 includes a front wheel 131 and a rear wheel 132, disposed below the frame 11. The front wheel 131 serves as the steering wheel of the electric two-wheeled vehicle 100, while the rear wheel serves as the driving wheel. The front wheel 131 rotates about its own axis, and the rear wheel 132 rotates about its own axis. The line connecting the axis of the front wheel 131 to the axis of the rear wheel is a first straight line. The width of the support plates 1114 extending in the left-right direction is L1, and the distance between the axis of the front wheel 131 and the axis of the rear wheel 132 is L2. Specifically, the ratio of L1 to L2 is set within a preset range. More specifically, the ratio of L1 to L2 is greater than or equal to 0.1 and less than or equal to 0.4. As an optional embodiment, the ratio of L1 to L2 can also be greater than or equal to 0.15 and less than or equal to 0.35. As an optional embodiment, the ratio of L1 to L2 can also be greater than or equal to 0.2 and less than or equal to 0.3. Under this setting, the ratio of L1 to L2 is in a suitable range, that is, it can provide a suitable width for the driver to place his feet and can limit the width of the support plate 1114 as much as possible to achieve lightweighting. It is understandable that when the ratio of L1 to L2 is set greater than this range, the support plate 1114 is too wide, which is not conducive to lightweighting; when the ratio of L1 to L2 is set less than this range, the driver cannot place his feet comfortably, which is not conducive to riding. It is understandable that the ratio of L1 to L2 can be 0.12, 0.15, 0.25, etc.

[0036] As an optional embodiment, with the plane perpendicular to the up-down direction as the second plane, the projection of the subframe 112 on the second plane along the up-down direction is basically a "U" shape with the opening facing backward. The subframe 112 includes a first fixing portion 1121 and a second fixing portion 1122. The first support vertical tube 1112a is arranged on the first fixing portion 1121, and the second support vertical tube 1112b and the third support vertical tube 1112c are both arranged on the second fixing portion 1122. As an optional embodiment, the first fixing portion 1121 is arranged as a plate, and the second fixing portion 1122 is arranged as a pipe. With this arrangement, the connection strength of the subframe 112 is met while providing more accommodation space. At the same time, the "U"-shaped subframe 112 can appropriately adjust the shape of the seat cushion device 14 by adjusting the structure of the upper part of the mechanism, thereby better supporting the seat cushion device 14.

[0037] like Figure 3As shown, the reinforcement assembly 1113 includes a first reinforcement member 1113a and a second reinforcement member 1113b. The first support vertical tube 1112a is disposed on the recessed portion 1111a, and the first reinforcement member 1113a is disposed at the connection between the first support vertical tube 1112a and the recessed portion 1111a. The second support vertical tube 1112b and the third support vertical tube 1112c are disposed on the main beam tube 1111 and are located behind the first support vertical tube 1112a. With the plane perpendicular to the left-right direction as the first plane, the second support vertical tube 1112b and the third support vertical tube 1112c are substantially symmetrical about the first plane in the left-right direction. The second support vertical tube 1112b and the third support vertical tube 1112c are connected to the main beam tube 1111 to form a substantially "Y"-shaped connection. The second reinforcement member 1113b is provided at the "Y"-shaped connection. The first reinforcement 1113a is positioned on the curved surface that aligns with the main beam tube 1111 and the first vertical support tube 1112a. The second reinforcement 1113b is positioned on the curved surface that aligns with the main beam tube 1111, the second vertical support tube 1112b, and the third vertical support tube 1112c. Both the first reinforcement 1113a and the second reinforcement 1113b are positioned at the welds of the vehicle frame 11, enhancing the rigidity and strength of key connection points while preventing the welds from being exposed, resulting in a more aesthetically pleasing design.

[0038] like Figures 3 to 6 As shown, the vehicle frame 11 also includes a support frame assembly 113. The main frame 111 also includes a support cross tube 1115. The support cross tube 1115 is disposed between the second support vertical tube 1112b and the third support vertical tube 1112c. The ground clearance of the support cross tube 1115 is lower than that of the subframe 112. The support frame assembly 113 is disposed on the support cross tube 1115 and extends from the support cross tube 1115 toward the rear of the electric two-wheeled vehicle, for mounting fenders, license plates, and the like. The support frame assembly 113 includes an upper support frame 1131, a lower support frame 1132, and a mounting plate 1133. The mounting plate 1133 is at least partially disposed on the support cross tube 1115 and the second and third support vertical tubes 1112b and 1112c. The upper and lower support frames 1131 and 1132 are connected to the vehicle frame 11 via the mounting plate 1133.

[0039] As an optional embodiment, the upper portion of the mounting plate 1133 is arranged on the support transverse tube 1115, and there is a mounting point on each of the left and right sides of the support transverse tube 1115. The lower portion of the mounting plate 1133 is connected to the second support vertical tube 1112b and the third support vertical tube 1112c. The upper support frame 1131 is arranged on the upper portion of the mounting plate 1133, and the lower support frame 1132 is arranged on the lower portion of the mounting plate 1133. The upper support frame 1131 extends in the rear lower direction along the electric two-wheeled vehicle 100, and the lower support frame 1132 extends in the rear upper direction along the electric two-wheeled vehicle 100. The left and right sides of the upper support frame 1131 are each bent downward to form two first bent portions 1131a, and the upper support frame 1131 is fixedly connected to the mounting plate 1133 via the two first bent portions 1131a. The plane perpendicular to the front-to-back direction is the third plane. The projection of the two first bent portions 1131a along the front-to-back direction on the third plane is an "eight" shape. Two second bent portions 1132a are provided on each side of the lower support frame 1132, each bent upward. The lower support frame 1132 is fixedly connected to the mounting plate 1133 via the two second bent portions 1132a. In this arrangement, the upper support frame 1131 and the lower support frame 1132 are fixedly connected to the mounting plate 1133 via the first bent portion 1131a and the second bent portion 1132a. The weight carried by the support frame assembly 113 is evenly distributed across the mounting plate 1133, thereby increasing the load capacity.

[0040] As an optional embodiment, the projection of the mounting point of the upper support frame 1131 on the mounting plate 1133 on the first plane in the left-right direction is projection point a, the projection of the mounting point of the lower support frame 1132 on the mounting plate 1133 in the left-right direction is projection point b, and the projection of the connection point between the upper support frame 1131 and the lower support frame 1132 on the first plane in the left-right direction is projection point c. Projection points a, b, and c form a triangle, thus forming a stable triangular structure around the support frame 1131 and the lower support frame 1132. This arrangement provides a more stable structure for the support frame assembly 113. The distance between projection points a and b is the mounting spacing D, and the angle at which projection point c is located is projection angle α. Specifically, projection angle α is set within a certain range. More specifically, projection angle α can be set to be greater than or equal to 20° and less than or equal to 120°. As an optional embodiment, projection angle α can also be set to be greater than or equal to 40° and less than or equal to 100°. As an optional embodiment, the projection angle α can also be set to be greater than or equal to 60° and less than or equal to 80°. Under this setting, the projection angle α is in a suitable range, which can provide a suitable strength and limit the length of the support frame assembly 113 as much as possible to achieve lightweight. It is understandable that when the projection angle α is set to be greater than this range, the length of the support frame assembly 113 is too small and cannot meet the installation requirements; when the ratio of the projection angle α is set to be less than this range, the length of the support frame assembly 113 is too long, which is not conducive to lightweight, and is prone to shaking, and the installation strength is easily affected. It is understandable that the projection angle α can be set to 25°, 30°, 55°, 70°, etc.

[0041] Specifically, the installation spacing D is set within a certain range. More specifically, the installation spacing D can be set to be greater than or equal to 40 cm and less than or equal to 350 cm. As an alternative embodiment, the installation spacing D can also be set to be greater than or equal to 80 and less than or equal to 300 cm. As an alternative embodiment, the installation spacing D can also be set to be greater than or equal to 150 cm and less than or equal to 250 cm. In this setting, the installation spacing D is within an appropriate range, which can provide appropriate strength while limiting the length of the support frame assembly 113 as much as possible to achieve lightweighting. It is understood that when the installation spacing D is set greater than this range, the length of the support frame assembly 113 is too short and cannot meet the installation requirements; when the ratio of the projection angle α is set less than this range, the length of the support frame assembly 113 is too long, which is not conducive to lightweighting and the installation strength is easily affected. It is understood that the installation spacing D can be set to 100 cm, 180 cm, 200 cm, 280 cm, etc.

[0042] like Figure 2 、 Figure 7As shown, as one implementation, the suspension mechanism 12 includes a rear fork 121, through which the rear wheel 132 is connected to the frame 11. Furthermore, one end of the rear fork 121 is rotatably connected to the main frame 111, while the other end of the rear fork 121 is mounted on a rear wheel axle 1321. The suspension mechanism 12 also includes a connector 122, which is at least partially mounted on the rear wheel 132. The rear fork 121 defines an interior space, and the connector 122 is at least partially mounted within this interior space and abuts the rear fork 121. On a first plane perpendicular to the left-right direction, the projection of the connector 122 on the first plane in the left-right direction is a first projection area, and the projection of the rear fork 121 on the first plane in the left-right direction is a second projection area, with the first projection area substantially overlapping the second projection area. The rear wheel 132 includes a rear wheel axle 1321, which extends between the connector 122 and the rear fork 121 in the left-right direction. Specifically, the rear axle 1321 has an elliptical cross-section at both ends, and the connector 122 is provided with mounting holes of corresponding shapes. It is understood that the rear axle 1321 can also have a square, rectangular, or other non-circular cross-section, with the connector 122 provided with mounting holes of corresponding shapes. The rear axle 1321 is restrained by the connector 122 and prevented from rotating with the rear wheel 132. In this configuration, the rear fork 121 is connected to the rear axle 1321 via the connector 122. The connector 122 is made of metal, absorbing torque and dispersing stress at the connection between the rear fork 121 and the rear axle 1321. This makes the rear fork 121 less susceptible to deformation and wear, while also increasing the freedom in material selection for the rear fork 121 and resulting in a lighter weight.

[0043] As an optional embodiment, the rear wheel axle 1321 passes through the connecting member 122 and the rear fork 121, and the connecting member 122 is fixed to the rear fork 121 by bolts. The connecting member 122 is provided with a first mounting portion 1221 and a second mounting portion 1222. The first mounting portion 1221 is provided with a mounting hole for connecting the connecting member 122 to the rear wheel axle 1321. The inner contour of this mounting hole corresponds to the shape of the cross-section at both ends of the rear wheel axle 1321. The connecting member 122 abuts the rear wheel axle 1321, preventing the rear wheel axle 1321 from rotating. The second mounting portion 1222 is provided with two mounting holes for connecting the connecting member 122 to the rear fork 121. It is understood that the number of mounting holes in the second mounting portion 1222 can be set to 1, 3, 4, or other reasonable number, as long as the fixing requirements are met. Corresponding to the second mounting portion 1222, a corresponding number of mounting positions are provided on the rear fork 121. Each mounting hole mates with a mounting point on the rear fork 121. The mounting positions are located on one side of the mounting hole. The mounting hole and the mounting position are fixedly connected by bolts, thereby achieving the fixation of the rear fork 121 and the connecting member 122. Specifically, the bolts are arranged in the left-right direction, and the axis of the bolts is substantially parallel to the axis of the rear wheel axle 1231. In this case, the mounting holes of the first mounting portion 1221 and the second mounting portion 1222 form a triangle around each other, making the connection more stable. It is understood that the bolts can also be arranged in the up-down direction, that is, the axis of the bolts is substantially perpendicular to the axis of the rear wheel axle 1231. The rear fork 121 also includes a wiring portion 1211, which is provided with a plurality of limit holes for regulating the wiring at the rear of the electric two-wheeled vehicle 100.

[0044] like Figure 2 、 Figure 8As shown, the suspension mechanism 12 further includes a shock absorber 123, which is disposed rearwardly of the seat assembly 14. The shock absorber 123 extends vertically, with one end connected to the rear fork 121 and the other end connected to the frame 11. The rear fork 121 is connected to the frame 11 at one end and to the rear wheel 132 at the other end. A mounting portion 1212 is further provided at the upper end of the rear fork 121, through which one end of the shock absorber 123 is connected to the rear fork 121. The frame 11 further includes a connecting bracket 114, through which the other end of the shock absorber 123 is connected to the frame 11. Specifically, the connecting bracket 114 is arranged on the supporting cross tube 1115 and extends toward the front of the vehicle. The connecting bracket 114 is arranged in the accommodation space formed by the first supporting vertical tube 1112a, the second supporting vertical tube 1112b, and the third supporting vertical tube 1112c, that is, the shock absorber 123 is at least partially arranged in the accommodation space. In this arrangement, the shock absorber 123 is basically hidden, which is more beautiful; at the same time, it can save space without affecting performance. Furthermore, the number of shock absorbers 123 can be set to single. The angle β formed between the axis of the shock absorber 123 and the first straight line is set to be greater than or equal to 60° and less than or equal to 80°. In this arrangement, the shock absorber 123 can save space while ensuring the shock absorption effect.

[0045] As an optional embodiment, the shock absorber 123 includes a first connecting end 1231 and a second connecting end 1232. The first connecting end 1231 is mounted on the connecting bracket 114, and the second connecting end 1232 is mounted on the mounting portion 1212 and connected to the rear wheel 132 via the rear fork 121. The vertical projection of the first connecting end 1231 on the second plane is a first projection point. The vertical projection of the axis of the front wheel 131 on the second plane is a second projection point. The distance between the first and second projection points is a projection length D1. The vertical projection of the second connecting end 1232 on the second plane is a fourth projection point. The vertical projection between the leftmost point of the outer edge of the rear wheel 132 on the second plane is a fourth projection point. The distance between the third and fourth projection points is a projection length D2. The vertical projection of the first connecting end 1231 on the second plane is located forward of the vertical projection of the second connecting end 1232 on the second plane. Specifically, the ratio of the projected length D1 to the projected length D2 can be greater than or equal to 62 and less than or equal to 123. As an alternative embodiment, the ratio of the projected length D1 to the projected length D2 can be greater than or equal to 80 and less than or equal to 110. As an alternative embodiment, the ratio of the projected length D1 to the projected length D2 can be greater than or equal to 90 and less than or equal to 100. In this configuration, the ratio of the projected length D1 to the projected length D2 can be within an appropriate range, which can meet the requirements of shock absorption while saving space as much as possible. It is understood that when the ratio of projected length D1 to projected length D2 is set greater than this range, the inclination angle of shock absorber 123 is too small or the length of shock absorber 123 is too short, which does not meet the shock absorption requirements and affects the driver's experience. When the ratio of projected length D1 to projected length D2 is set less than this range, shock absorber 123 is too inclined toward the accommodation space formed by the first support vertical tube 1112a, the second support vertical tube 1112b, and the third support vertical tube 1112c, or the length of shock absorber 123 is too long, shock absorber 123 takes up too much space and fails to meet the layout requirements. It is understood that the ratio of projected length D1 to projected length D2 can be 75, 85, 96, etc.

[0046] like Figure 3 、 Figure 9As shown, the seat assembly 14 includes a seat cushion 141, a seat bucket 142, and a mounting assembly 143. The seat bucket 142 is located below the seat assembly 14, and the battery assembly 17 is mounted within the seat bucket 142. The seat cushion 141 and the seat bucket 142 are rotatably connected via the mounting assembly 143. The seat cushion 141 includes a first surface for the driver to sit on and a second surface adjacent to the seat bucket 142. Both the first and second surfaces are curved. The mounting assembly 143 is mounted on the second surface. The vehicle frame 11 also includes a battery mounting bracket 115, which at least partially connects to the first, second, and third support vertical tubes 1112a, 1112b, and 1112c. A platform 1151 is provided at the top end of the battery mounting bracket 115 for positioning the seat bucket 142. The lines connecting the mounting locations of the battery mounting bracket 115 and the first, second, and third support vertical tubes 1112a, 1112b, and 1112c form a triangle, providing enhanced stability. In addition, the accommodation space formed by the first supporting vertical tube 1112 a , the second supporting vertical tube 1112 b and the third supporting vertical tube 1112 c can provide stronger protection for the battery assembly 17 .

[0047] As an optional embodiment, the mounting assembly 143 includes a first mounting plate 1431, a second mounting plate 1432 and a pin 1433. The first mounting plate 1431 includes a first mounting portion 1431a and a first connecting portion 1431b, wherein the first mounting portion 1431a is used to connect to the seat cushion 141, and the first connecting portion 1431b is used to connect to the pin 1433. The second mounting plate 1432 includes a second mounting portion (not shown) and a second connecting portion (not shown), wherein the second mounting portion is used to connect to the seat bucket 142, and the second connecting portion is used to connect to the pin 1433. The seat cushion 141 includes a protrusion 1411, which is located on the second surface and is integrally formed with the seat cushion 141. The protrusion 1411 can block the axial movement of the pin 1433. Specifically, the first mounting plate 1431 and the second mounting plate 1432 are secured to the seat cushion 141 and the seat bucket 142 via bolts. The first mounting portion 1431a and the second mounting portion are each provided with a plurality of mounting holes for connection. The inner contours of these mounting holes correspond to the inner contours and number of the mounting holes provided on the seat cushion 141 and the seat bucket 142. The first connecting portion 1431b and the second connecting portion are secured via a pin 1433, achieving a rotational connection between the seat cushion 141 and the seat bucket 142. The pin 1433 includes a pin head 1433a, and the protrusion 1411 is configured to abut against the pin head 1433a after assembly. During assembly, the first mounting plate 1431 and the second mounting plate 1432 are first connected via the pin. Then, bolt the first mounting plate 1431 to the seat bucket 142, and finally bolt the second mounting plate 1432 to the seat cushion 141. After assembly, the protrusion 1411 abuts against the pin head 1433a, preventing axial movement of the pin 1433. This arrangement prevents the pin 1433 from disengaging without the need for a nut or cotter pin.

[0048] like Figure 9 As shown, the seat cushion device 14 also includes a seat cushion lock assembly 144, which is used to lock the seat cushion 141 so that the seat cushion 141 and the seat barrel 142 form a relatively closed space. Specifically, the seat cushion lock assembly 144 includes a switch 1441, a locking member 1442, and a seat cushion cable 1443. The seat cushion 141 can have a first state in which it is locked to the vehicle frame 11 and a second state in which it is unlocked from the vehicle frame 11. The locking member 1442 is fixed to the vehicle frame 11, and the seat cushion 141 is connected to the vehicle frame 11 via the locking member 1442, maintaining the first state. One end of the seat cushion cable 1443 is connected to the locking member 1442, and the other end of the seat cushion cable 1443 is connected to the switch 1441. In response to the activation of the switch 1441, the locking member 1442 can disconnect the seat cushion 141 from the locking member 1442, thereby switching the seat cushion 141 from the first state to the second state. The switch 1441 is provided at the front of the electric two-wheeled vehicle 100 for the convenience of the driver's operation.

[0049] As an optional embodiment, the seat cushion cable 1443 includes a first protective layer 1443a, a second protective layer 1443b, a cable rope 1443c and a cable head (not shown). The first protective layer 1443a is arranged at the outermost layer, and the first protective layer 1443a is a waterproof material layer. The second protective layer 1443b is arranged on the outside of the cable rope 1443c and on the inside of the first protective layer 1443a. The second protective layer 1443b is arranged as a straight low-helix wound steel wire. The cable rope 1443c is arranged in the innermost layer and can be displaced relative to the second protective layer 1443b. The cable rope 1443c is set to a metal material and is not easily deformed. The cable head is arranged at the end of the cable rope 1443, and the cable head is used to cooperate with the locking member 1442 for locking and unlocking. The seat cushion also includes a connecting member (not shown), one end of the locking member 1442 is connected to the cable head, and the cable head can respond to the triggering of the switch 1441 to disconnect the connection between the connecting member and the locking member 1442, so that the seat cushion 141 switches from the first state to the second state.

[0050] Specifically, the cable 1443c is extended, the cable head and the end of the second protective layer 1443b are greater than or equal to the fixed distance, and the locking member 1442 is locked. The cable 1443c is retracted into the second protective layer 1443b, the cable head and the end of the second protective layer 1443b are less than or equal to the unlocking distance, and the locking member 1442 is unlocked. Among them, the fixed distance is greater than the unlocking distance. When the driver locks with the switch 1441, the cable 1443c is extended, and the cable head extends a fixed distance from the second protective layer 1443b; when the driver unlocks with the switch 1441, the cable 1443c is tightened, and the length of the cable 1443c extending from the second protective layer 1443b is reduced. When the distance that the cable 1443c extends from the second protective layer 1443b is less than the unlocking distance, the seat cushion lock assembly 144 is unlocked. In this unlocking method, even if the seat cushion cable 1443 is bent by external force, such as by hand, the second protective layer 1443b will not lengthen. When the seat cushion 141 is in the first state, even if the seat cushion cable 1443 is bent, the length of the second protective layer 1443b will remain less than or equal to the initial length of the second protective layer 1443b, that is, the length of the cable 1443c extending from the second protective layer 1443b will not decrease. In this case, without using the switch 1441, the portion of the cable 1443c extending from the second protective layer 1443b will not be less than the unlocking distance. Therefore, in this arrangement, even if the exposed portion of the seat cushion cable 1443 is bent by external force, it will not be unlocked, thereby improving the safety of the seat cushion lock assembly 144 and reducing the requirements for the placement of the seat cushion cable 1443.

[0051] like Figure 12 、 13As shown, the lighting mechanism 16 includes a front lighting assembly 161 and a rear lighting assembly 162. The front lighting assembly 161 is arranged at the front of the electric two-wheeled vehicle 100, and the front lighting assembly 161 integrates the functions of the position light and the left and right turn signals arranged on the left and right sides. In a common electric two-wheeled vehicle 100, the left and right turn signals of the front lighting assembly 161 are separately arranged on both sides. In this way, the integration of the front lights of the vehicle is low, and the wiring is more complicated. At the same time, the left and right turn signals are separately arranged on both sides, which are prone to problems such as bumps and damage, resulting in a short service life of the left and right turn signals, requiring frequent replacement, and increasing the cost of use. Under this arrangement, the front lighting assembly 161 is more compact, has a higher space utilization rate, and is not easily damaged.

[0052] As an optional embodiment, the front lighting assembly 161 includes a first lighting area 1611, a second lighting area 1612, a third lighting area 1613, and a control module (not shown). On a first plane perpendicular to the left-right direction, the electric two-wheeled vehicle 100 is substantially bilaterally symmetrical about the first plane. The front lighting assembly 161 extends along the left-right direction of the electric two-wheeled vehicle, with the first lighting area 1611 disposed in the middle of the front lighting assembly 161, and the second lighting area 1612 and the third lighting area 1613 disposed at opposite ends of the front lighting assembly 161, respectively. The second lighting area 1612 and the third lighting area 1613 are substantially bilaterally symmetrical about the first plane.

[0053] The first lighting area 1611 is provided with position lights, and the second lighting area 1612 and the third lighting area 1623 are both provided with position lights and turn signals. The electric two-wheeled vehicle 100 includes a normal driving state and a turning state. When the electric two-wheeled vehicle 100 is in the normal driving state, the lights of the front lighting assembly 161 are turned off; when the electric two-wheeled vehicle 100 is in the normal driving state, the position lights of the first lighting area 1611, the second lighting area 1612, and the third lighting area 1623 are turned on; when the electric two-wheeled vehicle 100 is in the turning state, the position lights of the first lighting area 1611 are turned on, and the turn signals of the second lighting area 1612 or the third lighting area 1623 are turned on. In the second lighting area 1612 or the third lighting area 1613, the position lights and the turn lights share a lighting area. The light emission forms of the position lights and the turn lights are first reflected through the reflective bowl such as the position source light, and then the light is emitted through the light distribution pattern of the thick-walled part; the light of the position lights and the turn lights is reflected and transmitted through different parts of the same reflective bowl and thick-walled part, realizing two optical functions in the same area.

[0054] As an optional embodiment, the front lighting assembly 161 further includes an operating member 1614. The control module includes a control unit and an output unit. The operating member 1614 can transmit control instructions to the control unit in response to external forces. The control unit can determine the instruction results for the first lighting area 1611, the second lighting area 1612, and the third lighting area 1613 based on the control instructions from the button. The instruction results can instruct the output unit to control the illumination of different lights in the first lighting area 1611, the second lighting area 1612, and the third lighting area 1613. Specifically, the control unit can be connected to the operating member via a cable. When the driver operates the operating member 1614, the control unit can receive the instructions transmitted by the operating member and determine the driver's instructions for the first lighting area 1611, the second lighting area 1612, and the third lighting area 1613 based on the instructions. Among them, the operating member 1614 can be set as a button, which generates a control instruction in response to the force applied by the driver by contact, pressing, etc. on the button and transmits the instruction to the control unit, and determines the driver's instruction results for the first lighting area 1611, the second lighting area 1612 and the third lighting area 1613 based on the instruction, such as "the first lighting area 1611 switches to the position light", "the second lighting area 1612 switches to the turn signal", "the second lighting area 1612 switches to the position light", "the third lighting area 1613 switches to the turn signal" or "the third lighting area 1613 switches to the position light" and other instructions.

[0055] As an optional embodiment, the projected area of ​​the first lighting area 1611 along the front-to-back direction on the third plane is S1, and the projected area of ​​the front lighting assembly 161 along the front-to-back direction on the third plane is S2. The ratio of S1 to S2 is set within a certain range. More specifically, the ratio of S1 to S2 can be greater than or equal to 0.20 and less than or equal to 0.50. As an optional embodiment, the ratio of S1 to S2 can also be greater than or equal to 0.25 and less than or equal to 0.45. As an optional embodiment, the ratio of S1 to S2 can also be greater than or equal to 0.30 and less than or equal to 0.40. In this setting, the ratio of S1 to S2 is within an appropriate range, which can both display vehicle signals and meet lighting requirements while minimizing the size of the front lighting assembly 161 to achieve lightweighting. It is understood that when the ratio of S1 to S2 is set larger than this range, the area of ​​the second lighting area 1612 or the third lighting area 1613 is too small, and the left and right turn signals are too small to clearly display vehicle signals. When the ratio of S1 to S2 is set smaller than this range, the first lighting area 1611 is too small, and the illumination intensity of the position lights is insufficient. It is understood that S1 and S2 can be 0.22, 0.28, 0.34, 0.42, etc.

[0056] like Figure 12 、 Figure 13 As shown, the rear lighting assembly 162 is positioned behind the seat tub 142 and below the seat cushion 141. The seat tub 142 includes a mounting portion 1421, to which the rear lighting assembly 162 is bolted. The rear lighting assembly 162 integrates the functions of the position light, brake light, and rear turn signal. Conventional electric two-wheeled vehicles 100 often have the position light, brake light, and rear turn signal as separate components, resulting in lower integration and more complex wiring. The rear lighting assembly 162 includes a first lighting area 1621, a second lighting area 1622, and a third lighting area 1623. The rear lighting assembly 162 extends horizontally, with the first lighting area 1621 located in the middle and the second and third lighting areas 1622 and 1623 located at either end. The first lighting area 1621 includes both the position light and the brake light, with the position light being brighter than the brake light. The second lighting area 1622 and the third lighting area 1623 are both provided with turn signals. The electric two-wheeled vehicle 100 includes a normal driving state, a braking state, and a steering state. When the electric two-wheeled vehicle 100 is in a normal driving state, the position light in the first lighting area 1621 is turned on, and the turn signals in the second lighting area 1622 and the third lighting area 1623 are turned off; when the electric two-wheeled vehicle 100 is in a braking state, the brake light in the first lighting area 1621 is turned on, and the turn signals in the second lighting area 1622 and the third lighting area 1623 are turned off; when the electric two-wheeled vehicle 100 is in a steering state, the position light in the first lighting area 1621 is turned on, and the turn signals in the second lighting area 1622 or the third lighting area 1623 are turned on. With this arrangement, the rear lighting assembly 162 integrates multiple lights, making the arrangement more compact and improving space utilization. The position light and brake light parts of this application reflect the light source through the reflective bowl, and then pass it through the light distribution inner cover to achieve the required brightness of the brake light; the turn signal part refracts the light source through an extremely small thick-walled part to achieve the required turn signal spacing distance.

[0057] As an optional embodiment, in the vertical direction, the overlapping area of ​​the projection of the rear lighting assembly 162 on the second plane and the projection of the seat cushion 141 on the second plane is S3, and the projection area of ​​the rear lighting assembly 162 on the second plane is S4. The ratio of S3 to S4 is set within a certain range. More specifically, the ratio of S3 to S4 can be greater than or equal to 0.50 and less than or equal to 0.92. As an optional embodiment, the ratio of S3 to S4 can also be greater than or equal to 0.60 and less than or equal to 0.85. As an optional embodiment, the ratio of S3 to S4 can also be greater than or equal to 0.70 and less than or equal to 0.80. With this configuration, the ratio of S3 to S4 is within a suitable range, and the rear lighting assembly 162 is compactly arranged while still being able to display vehicle signals. It is understood that when the ratio of S3 to S4 is set larger than this range, the rear lighting assembly 162 is too far hidden under the seat cushion 141, failing to meet lighting requirements. When the ratio of S3 to S4 is set smaller than this range, the overlap between the lighting assembly 162 and the seat cushion 141 is too low when viewed from above and below the electric two-wheeled vehicle 100, resulting in low space utilization. It is understood that the ratio of S3 to S4 can be 0.55, 0.62, 0.75, etc.

[0058] like Figure 10 、 Figure 14 As shown, the rear wheel 132 also includes a tire 1322, a rim 1323, spokes 1324, and a valve 1325. The tire 1322 is used to store gas. The valve 1325 is provided on the tire 1322 for inflating and deflating the tire 1322. Specifically, the valve 1325 is provided on the side of the rim 1323 that contacts the spokes 1324, and the valve 1325 is inclined toward the side away from the running mechanism 13. When viewed from the top and bottom of the electric two-wheeled vehicle 100, the valve 1325 substantially overlaps with the rear wheel 132. The rim 1323 is provided with a mounting surface 1323a for connecting to the valve 1325, and the valve 1325 is substantially perpendicular to the mounting surface 1323a. The angle γ between the mounting surface 1323a and the second plane is set to be greater than or equal to 20° and less than or equal to 40°. In this setting, since the angle between the mounting surface 1323a and the second plane is set to be within a special angle range, the valve mouth 1325 is set to be straight and does not need to be bent, which meets the convenience of inflation while saving costs.

[0059] As an optional embodiment, the electric two-wheeled vehicle 100 further includes a braking mechanism (not shown). The braking mechanism is provided on one side of the rear wheel 132. In order to prevent the valve 1325 from adversely affecting the setting and installation of the braking mechanism, and to facilitate the inflation of the walking mechanism 13, the valve 1325 and the braking mechanism are respectively provided on both sides of the rear wheel 132. As another implementation, the angle γ between the mounting surface 1323a and the second plane is set to be greater than or equal to 25° and less than or equal to 35°. As another implementation, the angle γ between the mounting surface 1323a and the second plane is set to be greater than or equal to 28° and less than or equal to 32°. Under this setting, the angle γ between the mounting surface 1323a and the second plane is set to be within a suitable range, which can meet the inflation requirements, and can avoid interfering with other mechanisms as much as possible, while achieving an aesthetic effect. It is understood that if the angle γ between the mounting surface 1323a and the second plane is set to be greater than this range, the valve 1325 is too far away from the rim 1323, exposed to the outside and easily damaged, and has an unsightly appearance. If the angle γ between the mounting surface 1323a and the second plane is set to be less than this range, the valve 1325 is too close to the rim 1323 and spokes 1324, easily interfering with the tire during inflation and causing inconvenience. It is understood that the angle γ between the mounting surface 1323a and the second plane can be set to 26°, 32°, 34°, 37°, etc.

[0060] In the present application, the main frame 111 of the electric two-wheeled vehicle 100 is provided with a main beam tube 1111 and a support plate 1114, the main beam tube 1111 extends in the front and rear directions of the electric two-wheeled vehicle, the support plate 1114 extends in the left and right directions, the support plate 1114 is on the main beam tube 1111, and the width distance of the support plate 1114 extending in the left and right directions is L1. The distance from the axis of the front wheel 131 to the axis of the rear wheel 132 is set to L2, and the ratio of L1 to L2 is set within a certain range. Under this setting, the frame 11 meets the strength requirements while being more lightweight.

[0061] Although the preferred embodiments of the present invention have been disclosed for illustrative purposes, those skilled in the art will appreciate that various modifications, additions and substitutions are possible, without departing from the scope and spirit of the invention as disclosed in the accompanying claims.

Claims

1. An electric two-wheeled vehicle, comprising: Frame; A running mechanism, the running mechanism comprising a front wheel and a rear wheel, the front wheel and the rear wheel being at least partially arranged on the frame; A suspension mechanism, the suspension mechanism comprising a rear fork and a shock absorber, one end of the shock absorber is connected to the frame and the other end is connected to the rear fork; a battery assembly, wherein the battery assembly is at least partially disposed on the frame; a body covering, the body covering at least partially covering the battery assembly; It is characterized in that The shock absorber includes a first connection end and a second connection end, the first connection end is arranged on the frame, and the second connection end is arranged on the rear fork, defining a plane perpendicular to the height direction of the electric two-wheeled vehicle as a reference plane, the projection of the first connection end on the reference plane along the height direction is a first projection point, the projection of the axis of the front wheel on the reference plane along the height direction is a second projection point, and the distance between the first projection point and the second projection point is a projection length D1; the projection of the second connection end on the reference plane along the height direction is a third projection point, the projection of the leftmost point of the outer edge of the rear wheel on the reference plane along the height direction is a fourth projection point, the distance between the third projection point and the fourth projection point is a projection length D2, and the ratio of the projection length D1 to the projection length D2 is greater than or equal to 62 and less than or equal to 123.

2. The electric two-wheeled vehicle according to claim 1, characterized in that: The ratio of the projection length D1 to the projection length D2 is greater than or equal to 80 and less than or equal to 110.

3. The electric two-wheeled vehicle according to claim 1, characterized in that: A ratio of the projection length D1 to the projection length D2 is greater than or equal to 90 and less than or equal to 100.

4. The electric two-wheeled vehicle according to claim 1, characterized in that: The line connecting the axis of the front wheel to the axis of the rear wheel is a first straight line. On a projection plane perpendicular to the left-right direction, an angle β between a projection of the axis of the shock absorber along the left-right direction on the projection plane and a projection of the first straight line along the left-right direction on the projection plane is greater than or equal to 60° and less than or equal to 80°.

5. The electric two-wheeled vehicle according to claim 1, characterized in that: The vehicle frame comprises a connecting bracket, the shock absorber is arranged on the connecting bracket, and the electric two-wheeled vehicle further comprises a seat cushion, and the connecting bracket is at least partially arranged below the seat cushion.

6. The electric two-wheeled vehicle according to claim 5, characterized in that: The frame also includes a supporting vertical tube and a supporting cross tube, the supporting vertical tube includes a first supporting vertical tube, a second supporting vertical tube and a third supporting vertical tube, the first supporting vertical tube, the second supporting vertical tube and the third supporting vertical tube surround to form a accommodating space, the supporting cross tube is arranged between the second supporting vertical tube and the third supporting vertical tube, and the connecting bracket is arranged on the supporting cross tube.

7. The electric two-wheeled vehicle according to claim 6, characterized in that: The connecting bracket extends from the supporting transverse tube toward the front of the vehicle, and the connecting point between the first connecting end and the connecting bracket is located in a containing space formed by the first supporting vertical tube, the second supporting vertical tube and the third supporting vertical tube.

8. The electric two-wheeled vehicle according to claim 1, characterized in that: The suspension mechanism also includes a connecting member, and the traveling mechanism includes a rear wheel, which is connected to the frame via the rear fork, and a receiving space is formed at one end of the rear fork connected to the rear wheel, and the connecting member is at least partially arranged in the receiving space, and the rear wheel axle passes through the rear fork and the connecting member.

9. The electric two-wheeled vehicle according to claim 1, characterized in that: The rear flat fork includes a connecting portion, the shock absorber is arranged on the connecting portion, and the electric two-wheeled vehicle also includes a seat cushion, and the connecting portion is at least arranged behind the seat cushion.

10. The electric two-wheeled vehicle according to claim 1, characterized in that: On a projection plane perpendicular to the height direction, the projection of the first connection end along the height direction on the reference plane is projection point A, and the projection of the second connection end along the height direction on the reference plane is projection point B, and the projection point A is located in front of the projection point B.

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