Electric two-wheeled vehicle

Abstract

The invention discloses an electric two-wheeled vehicle. The electric two-wheeled vehicle comprises a frame; the frame comprises a main frame and an auxiliary frame; the walking mechanism comprises a front wheel and a rear wheel which are arranged below the frame; the suspension mechanism is used for connecting the walking mechanism with the frame; the vehicle body covering part is at least partially arranged on the vehicle frame; wherein the main frame comprises a main beam pipe, a supporting vertical pipe and a supporting plate, the main beam pipe extends in the front-back direction of the electric two-wheeled vehicle, and the middle of the main beam pipe is sunken downwards to form a sunken part; the supporting plate is arranged in the concave part, the width distance of the supporting plate extending in the left-right direction is L1, the distance from the axis of the front wheel to the axis of the rear wheel is L2, and the ratio of L1 to L2 is larger than or equal to 0.1 and smaller than or equal to 0.4. Through the arrangement, the supporting strength of the frame is high.

Description

Technical Field

[0001] The 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-wheelers, as green, energy-saving and emission-reducing means of transportation, have played an increasingly important role in public transportation.

[0003] At present, electric two-wheeled vehicles are becoming increasingly miniaturized and lightweight in design. The space of electric two-wheeled vehicles is decreasing, and the lightweight requirements are getting higher and higher. The rear end of the electric two-wheeled vehicle is usually designed with a support frame for installing a fender. The support frame is generally a metal part with a large volume and weight, making it difficult to achieve lightweight of the entire vehicle. How to reasonably set the support frame and use a simple structure to meet the strength requirements has always been an urgent problem to be solved in the field of electric two-wheeled vehicles. Summary of the invention

[0004] In order to solve the above problems, the present application provides an electric two-wheeled vehicle with high frame support strength.

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

[0006] An electric two-wheeled vehicle comprises: a frame, the frame comprises a main 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 is at least partially arranged on the frame, and the front wheel and the rear wheel are connected to the main frame through the suspension mechanism; 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 frame also comprises a support frame assembly, the support frame assembly is fixedly connected to the main frame, the support frame assembly comprises a mounting plate, an upper support frame and a lower support frame, the upper support frame is arranged on the upper part of the mounting plate, and the lower support frame is arranged on the lower part of the mounting plate; on a longitudinal plane perpendicular to the left and right directions, the projection of the mounting point of the upper support frame and the mounting plate on the longitudinal plane along the left and right directions is projection point a, the projection of the mounting point of the lower support frame and the mounting plate on the longitudinal plane along the left and right directions is projection point b, the projection of the connection point of the upper support frame and the lower support frame on the longitudinal plane along the left and right directions is projection point c, and the lines connecting projection point a, projection point b and projection point c form a triangle.

[0007] Further, in the triangle formed by the line connecting projection point a, projection point b and projection point c, the angle where projection point c is located is projection angle α, and projection angle α can be set to be greater than or equal to 20° and less than or equal to 120°.

[0008] Further, the projection angle α may be set to be greater than or equal to 40° and less than or equal to 100°.

[0009] Furthermore, the projection angle α may also be set to be greater than or equal to 60° and less than or equal to 80°.

[0010] Further, in the triangle formed by the line connecting the projection point a, the projection point b and the projection point c, the installation spacing between the projection point a and the projection point b can be set to be greater than or equal to 40 cm and less than or equal to 350 cm.

[0011] Furthermore, the upper support frame is bent downward to form two first bent portions, and the two first bent portions are fixedly connected to the mounting plate, defining a plane perpendicular to the length direction of the electric two-wheeled vehicle as a transverse plane, and the projections of the two first bent portions along the length direction on the transverse plane are basically in an "eight" shape.

[0012] Furthermore, the lower support frame includes two second bending portions, the two second bending portions are fixedly connected to the mounting plate, and the two second bending portions are both bent upward.

[0013] Furthermore, the main frame 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 all extend in the up-down direction, and the supporting cross tube is arranged between the second supporting vertical tube and the third supporting vertical tube.

[0014] Furthermore, the mounting plate is fixedly connected to the supporting transverse tube, and has a mounting point on each side of the supporting transverse tube.

[0015] Further, the mounting plate is at least partially disposed on the second supporting vertical tube and the third supporting vertical tube, and the mounting plate has a connection point with each of the second supporting vertical tube and the third supporting vertical tube.

[0016] The frame of the electric two-wheeled vehicle provided in the present application is provided with a support frame assembly, which includes a mounting plate, an upper support frame and a lower support frame. The upper support frame, the lower support frame and the mounting plate are connected to each other in pairs, and the projection of the mounting point on the first plane in the left and right directions forms a stable triangular structure, thereby providing an electric two-wheeled vehicle with high frame support strength. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a three-dimensional diagram 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 schematic diagram of the main frame of the present application;

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

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

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

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

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

[0025] Fig. 9 is a schematic diagram of the three-dimensional structure of the cushion device of the present application;

[0026] Fig.10 This application Fig. 9 A schematic diagram of the enlarged structure at B in the middle;

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

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

[0029] Fig.13 is a schematic diagram of the structure of the front lighting assembly of the present application;

[0030] Fig.14 is a schematic diagram of the structure of the rear lighting assembly of the present application;

[0031] Fig.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 make the technical scheme of the present application better understood by the persons skilled in the art, the technical scheme in the specific implementation mode of the present application will be described clearly and completely below in conjunction with the drawings in the implementation mode of the present application. It should be understood that, for the ordinary technicians in the field, the above description can be improved or changed, and all these improvements and changes should belong to the protection scope of the claims attached to the present application.

[0033] like Figure 1 , Figure 2 , Fig.11As 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 by the driver to sit. 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 for the electric two-wheeled vehicle 100 to drive the electric two-wheeled vehicle 100. In order to clearly illustrate the technical solution of the present application, it is also defined as follows Figure 1 Front, back, top, bottom, left and right sides shown.

[0034] like Figures 1 to 4 As shown, the frame 11 includes a main frame 111 and a sub-frame 112, and 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 arranged to extend from the front to the rear of the electric two-wheeled vehicle 100 in the front-to-back direction, and the two ends of the main beam tube 1111 extend upward, and the middle portion forms a recessed portion 1111a downward. 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, and 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, and is used to widen the width of the recessed portion 1111a, so as to facilitate supporting the driver's feet. The first vertical support tube 1112a, the second vertical support tube 1112b and the third vertical support tube 1112c extend in the up-down direction respectively. The subframe 112 is disposed at the upper ends of the first vertical support tube 1112a, the second vertical support tube 1112b and the third vertical support tube 1112c, and forms a receiving space with the first vertical support tube 1112a, the second vertical support tube 1112b and the third vertical support tube 1112c. The battery assembly 17 is at least disposed in the receiving space.

[0035] As an optional embodiment, the support plate 1114 extends in the left-right direction and is substantially symmetrical about the main beam tube 1111 in the left-right direction. As an embodiment, the number of the support plates 1114 can be set to 2. It is understandable that the number of the support plates 1114 can also be other reasonable numbers, such as 1, 3, etc., as long as the driver's feet can support the strength during riding. The walking mechanism 13 includes a front wheel 131 and a rear wheel 132 arranged below the frame 11, and the front wheel 131 serves as a steering wheel of the electric two-wheeled vehicle 100, and the rear wheel serves as a driving wheel of the electric two-wheeled vehicle 100. The front wheel 131 rotates around its own axis, and the rear wheel 132 rotates around its own axis. The line connecting the axis of the front wheel 131 to the axis of the rear wheel is the first straight line. The width distance of the support plate 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 in 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 limit the width of the support plate 1114 as much as possible to achieve lightweight. 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 lightweight; 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, the plane perpendicular to the up-down direction is taken as the second plane, and the projection of the sub-frame 112 on the second plane along the up-down direction is basically a "U" shape with an opening backwards, and the sub-frame 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. Under this arrangement, the connection strength of the sub-frame 112 is met while providing more accommodation space. At the same time, the "U"-shaped sub-frame 112 can appropriately adjust the shape of the seat cushion device 14 by adjusting the structure of the upper part of the mechanism, so as to better support 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 arranged on the recessed portion 1111a, and the first reinforcement member 1113a is arranged 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 arranged on the main beam tube 1111 and are located behind the first support vertical tube 1112a. With the plane perpendicular to the left and right directions as the first plane, the second support vertical tube 1112b and the third support vertical tube 1112c are substantially symmetrical about the first plane along the left and right directions. 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 with a "Y"-shaped connection. The first reinforcement 1113a is arranged on the arc surface that fits the main beam tube 1111 and the first support vertical tube 1112a. The second reinforcement 1113b is arranged on the arc surface that fits the main beam tube 1111, the second support vertical tube 1112b and the third support vertical tube 1112c. The first reinforcement 1113a and the second reinforcement 1113b are both arranged on the welding part of the frame 11, which enhances the rigidity and strength of the key connection points, and does not expose the welding points, which is more beautiful.

[0038] like Figures 3 to 6 As shown, the vehicle frame 11 further includes a support frame assembly 113, and the main frame 111 further includes a support cross tube 1115, the support cross tube 1115 is arranged between the second support vertical tube 1112b and the third support vertical tube 1112c, and the height of the support cross tube 1115 from the ground is less than the height of the auxiliary frame 112 from the ground. The support frame assembly 113 is arranged on the support cross tube 1115 and extends from the support cross tube 1115 to the rear of the electric two-wheeled vehicle, and is used to install a fender, a license plate, etc. 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 arranged on the support cross tube 1115 and the second support vertical tube 1112b and the third support vertical tube 1112c. The upper support frame 1131 and the lower support frame 1132 are connected to the vehicle frame 11 through the mounting plate 1133.

[0039] As an optional embodiment, the upper part of the mounting plate 1133 is arranged on the supporting transverse tube 1115, and there is a mounting point on each of the left and right sides of the supporting transverse tube 1115. The lower part of the mounting plate 1133 is connected to the second supporting vertical tube 1112b and the third supporting vertical tube 1112c. The upper support frame 1131 is arranged on the upper part of the mounting plate 1133, and the lower support frame 1132 is arranged on the lower part 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 respectively bent downward to form two first bending portions 1131a, and the upper support frame 1131 is fixedly connected to the mounting plate 1133 through the two first bending portions 1131a. The plane perpendicular to the front-to-back direction is the third plane. The projection of the two first bending portions 1131a on the third plane along the front-to-back direction is an "eight" shape. Two second bent portions 1132a are respectively provided on both sides of the lower support frame 1132, and the lower support frame 1132 is fixedly connected to the mounting plate 1133 through 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 through the first bent portion 1131a and the second bent portion 1132a, and the weight carried by the support frame assembly 113 can be evenly distributed on the mounting plate 1133, thereby increasing the load capacity.

[0040] As an optional embodiment, the projection of the installation point of the upper support frame 1131 on the mounting plate 1133 in the left-right direction on the first plane is projection point a, the projection of the installation point of the lower support frame 1132 on the mounting plate 1133 in the left-right direction on the first plane is projection point b, and the projection of the connection point of the upper support frame 1131 and the lower support frame 1132 in the left-right direction on the first plane is projection point c, and projection point a, projection point b and projection point c form a triangle around, that is, the support frame 1131 and the lower support frame 1132 form a stable triangular structure around. Under this setting mode, the structure of the support frame assembly 113 is more stable. The distance between projection point a and projection point b is the installation spacing D, and the angle at which projection point c is located is the projection angle α. Specifically, the projection angle α is set within a certain range, and more specifically, the 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, the 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 implementation, 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 greater than this range, the length of the support frame assembly 113 is too small to 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 lightweight, and is easy to shake, and the installation strength is easily affected. It is understandable that the projection angle α can be set to 25°, 30°, 55°, 70°, etc.

[0042] 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 optional implementation, 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 optional implementation, 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. Under this setting, the installation spacing D is in a suitable range, that is, it can provide a suitable strength, and can limit the length of the support frame assembly 113 as much as possible to achieve lightweight. It can be understood that when the installation spacing D is set 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 less than this range, the length of the support frame assembly 113 is too long, which is not conducive to lightweight, and the strength of the installation is easily affected. It can be understood that the installation spacing D can be set to 100 cm, 180 cm, 200 cm, 280 cm, etc.

[0043] like Figure 2 , Figure 7As shown, as an implementation mode, the suspension mechanism 12 includes a rear fork 121, and the rear wheel 132 is connected to the frame 11 through the rear fork 121. Further, one end of the rear fork 121 is rotatably connected to the main frame 111, and the other end of the rear fork 121 is arranged on the rear wheel axle 1321. The suspension mechanism 12 also includes a connecting member 122, and the connecting member 122 is at least partially arranged on the rear wheel 132. The rear fork 121 itself is surrounded to form an internal space, and the connecting member 122 is at least partially arranged in this internal space and abuts against the rear fork 121. On a first plane perpendicular to the left and right directions, the projection of the connecting member 122 on the first plane along the left and right directions is a first projection area, and the projection of the rear fork 121 on the first plane along the left and right directions is a second projection area, and the first projection is substantially overlapped with the second projection. The rear wheel 132 includes a rear wheel axle 1321, and the rear wheel axle 1321 is arranged through the connecting member 122 and the rear fork 121 along the left and right directions. Specifically, the cross-sections at both ends of the rear wheel axle 1321 are set to be oval, and the connecting member 122 is provided with mounting holes of corresponding shapes. It is understandable that the cross-sections at both ends of the rear wheel axle 1321 can also be set to other non-circular shapes such as squares and rectangles, and the connecting member 122 is provided with mounting holes of corresponding shapes, and the rear wheel axle 1321 is limited by the connecting member 122 and will not rotate with the rear wheel 132. In this setting mode, the rear fork 121 is connected to the rear wheel axle 1321 through the connecting member 122, and the connecting member 122 is set to be made of metal material, and the torque is absorbed by the connecting member 122, and the stress at the connection between the rear fork 121 and the rear wheel axle 1321 is dispersed. The rear fork 121 is not easy to deform or wear, and the freedom of material selection of the rear fork 121 is increased, making it lighter.

[0044] As an optional embodiment, the rear wheel axle 1321 is provided through the connecting member 122 and the rear flat fork 121, and the connecting member 122 is fixed to the rear flat 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 the mounting hole corresponds to the shape of the cross section at both ends of the rear wheel axle 1321. The connecting member 122 abuts against the rear wheel axle 1321 to prevent the rear wheel axle 1321 from rotating. Two mounting holes for connecting the connecting member 122 to the rear flat fork 121 are distributed on the second mounting portion 1222. It can be understood that the number of mounting holes of the second mounting portion 1222 can be set to 1, 3, 4 or other reasonable numbers, 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 flat fork 121, each mounting hole is docked with the mounting point on the rear flat fork 121, and the mounting positions are arranged on one side of the mounting hole. The mounting hole is fixedly connected to the mounting position by bolts, thereby realizing the fixation of the rear flat 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. At this time, the mounting holes of the first mounting portion 1221 and the second mounting portion 1222 are surrounded to form a triangle, and the connection is more stable. It can be 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 flat fork 121 also includes a wiring portion 1211, which is arranged as a plurality of limit holes for regulating the rear line of the electric two-wheeled vehicle 100.

[0045] like Figure 2 , Figure 8As shown, the suspension mechanism 12 further includes a shock absorber 123, which is arranged at the rear of the seat cushion device 14. The shock absorber 123 extends in the up-down direction, one end of the shock absorber 123 is connected to the rear fork 121, and the other end of the shock absorber 123 is connected to the frame 11. One end of the rear fork 121 is connected to the frame 11, and the other end of the rear fork 121 is connected to the rear wheel 132. A mounting portion 1212 is further provided at the upper end of the rear fork 121, and one end of the shock absorber 123 is connected to the rear fork 121 through the mounting portion 1212. The frame 11 further includes a connecting bracket 114, and the other end of the shock absorber 123 is connected to the frame 11 through the connecting bracket 114. Specifically, the connecting bracket 114 is arranged on the supporting transverse tube 1115 and the connecting bracket 114 extends to 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 the performance. Further, 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.

[0046] As an optional embodiment, the shock absorber 123 includes a first connection end 1231 and a second connection end 1232. The first connection end 1231 is arranged on the connection bracket 114, and the second connection end 1232 is arranged on the mounting portion 1212 and connected to the rear wheel 132 through the rear fork 121. The projection of the first connection end 1231 on the second plane along the vertical direction is the first projection point, the projection of the axis of the front wheel 131 on the second plane along the vertical 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 connection end 1232 on the second plane along the vertical direction is the third projection point, and the projection between the leftmost point of the outer edge of the rear wheel 132 on the second plane along the vertical direction is the fourth projection point, and the distance between the third projection point and the fourth projection point is the projection length D2. The projection point of the first connection end 1231 on the second plane along the vertical direction is located in front of the projection point of the second connection end 1232 on the second plane along the vertical direction. Specifically, the ratio of the projection length D1 to the projection length D2 may be greater than or equal to 62 and less than or equal to 123; as an optional implementation, the ratio of the projection length D1 to the projection length D2 may be greater than or equal to 80 and less than or equal to 110. As an optional implementation, the ratio of the projection length D1 to the projection length D2 may be greater than or equal to 90 and less than or equal to 100. In this setting, the ratio of the projection length D1 to the projection length D2 may be within a suitable range, which can meet the requirements of shock absorption and save space as much as possible. It is understandable that when the ratio of the projection length D1 to the projection length D2 is set to be greater than this range, the inclination angle of the shock absorber 123 is too small or the length of the shock absorber 123 is too short, which does not meet the shock absorption requirements and affects the driver's experience; when the ratio of the projection length D1 to the projection length D2 is set to be less than this range, the 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 the shock absorber 123 is too long, and the shock absorber 123 occupies too much space and cannot meet the layout requirements. It is understandable that the ratio of the projection length D1 to the projection length D2 can be 75, 85, 96, etc.

[0047] like Figure 3 , Fig. 9As shown, the seat cushion device 14 includes a seat cushion 141, a seat barrel 142 and a mounting assembly 143. The seat barrel 142 is arranged below the seat cushion device 14, and the battery assembly 17 is arranged in the seat barrel 142. The seat cushion 141 and the seat barrel 142 are rotatably connected through the mounting assembly 143. The seat cushion 141 includes a first support surface for the driver to sit on and a second support surface close to the seat barrel 142, and the first support surface and the second support surface are both arranged in an arc shape. The mounting assembly 143 is arranged on the second support surface. The frame 11 also includes a battery mounting frame 115, and the battery mounting frame 115 is at least partially connected to the first support vertical tube 1112a, the second support vertical tube 1112b and the third support vertical tube 1112c. The upper end of the battery mounting frame 115 is provided with a platform portion 1151 for placing the seat barrel 142. The connecting line of the battery mounting frame 115 and the installation positions of the first support vertical tube 1112a, the second support vertical tube 1112b and the third support vertical tube 1112c forms a triangle, which is more stable. In addition, the accommodation space formed by the first support vertical tube 1112a, the second support vertical tube 1112b and the third support vertical tube 1112c can provide stronger protection for the battery assembly 17.

[0048] 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 support 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 fixed to the seat cushion 141 and the seat barrel 142 by bolts, and the first mounting portion 1431a and the second mounting portion are respectively provided with a plurality of mounting holes for connection, and the inner contour of the mounting holes corresponds to the inner contour and the number of the mounting holes provided on the seat cushion 141 and the seat barrel 142. The first connecting portion 1431b and the second connecting portion are fixed by a pin 1433 to realize the rotational connection between the seat cushion 141 and the seat barrel 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 by the pin. Then the first mounting plate 1431 and the seat bucket 142 are connected by bolts, and finally the second mounting plate 1432 and the seat cushion 141 are connected by bolts. After the assembly is completed, the protrusion 1411 just abuts against the pin shaft head 1433a, blocking the axial movement of the pin shaft 1433. In this arrangement, the protrusion 1411 can prevent the pin shaft 1433 from disengaging without the need for a nut or a split pin.

[0049] like Fig. 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 includes a first state locked to the frame 11 and a second state unlocked with the frame 11. The locking member 1442 is fixed to the frame 11, and the seat cushion 141 is connected to the frame 11 through the locking member 1442, so that the seat cushion 141 maintains 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. The locking member 1442 can disconnect the connection between the seat cushion 141 and the locking member 1442 in response to the triggering of the switch 1441, so that the seat cushion 141 is switched from the first state to the second state. The switch 1441 is disposed at the front of the electric two-wheeled vehicle 100 for easy operation by the driver.

[0050] As an optional embodiment, the 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 outside the cable rope 1443c and inside 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.

[0051] 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 lock assembly 144 is unlocked. In this unlocking mode, the second protective layer 1443b will not lengthen when the seat cable 1443 is bent by external force, such as by hand. When the seat 141 is in the first state, even if the seat cable 1443 is bent, the length of the second protective layer 1443b is still less than or equal to the initial length of the second protective layer 1443b, that is, the length of the cable 1443c extending out of the second protective layer 1443b will not decrease. At this time, the switch 1441 is not used, and the portion of the cable 1443c extending out of the second protective layer 1443b will not be less than the unlocking distance. Therefore, in this setting, even if the exposed portion of the seat cable 1443 is bent by external force, it will not be unlocked, which improves the safety of the seat lock assembly 144 and also reduces the requirements for the arrangement position of the seat cable 1443.

[0052] like Fig.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 the 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 damages, 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 easy to be damaged.

[0053] 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 and right directions, the electric two-wheeled vehicle 100 is substantially symmetrical about the first plane. The front lighting assembly 161 extends along the left and right directions of the electric two-wheeled vehicle, the first lighting area 1611 is arranged in the middle of the front lighting assembly 161, the second lighting area 1612 and the third lighting area 1613 are respectively arranged at both ends of the front lighting assembly 161, and the second lighting area 1612 and the third lighting area 1613 are substantially symmetrical about the first plane.

[0054] The first lighting area 1611 is provided with a position light, and the second lighting area 1612 and the third lighting area 1623 are both provided with a position light and a turn signal light. The electric two-wheeled vehicle 100 includes a normal driving state and a turn signal state. When the electric two-wheeled vehicle 100 is in a normal driving state, the light of the front lighting assembly 161 is turned off; when the electric two-wheeled vehicle 100 is in a 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 a turn signal state, the position light of the first lighting area 1611 is turned on, and the turn signal light of the second lighting area 1612 or the third lighting area 1623 is 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, and the light emission forms of the position lights and the turn lights are first reflected through a reflective bowl such as 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, thereby realizing two optical functions in the same area.

[0055] As an optional embodiment, the front lighting assembly 161 also includes an operating member 1614. The control module includes a control unit and an output unit. The operating member 1614 can transmit a control instruction to the control unit in response to an external force. The control unit can determine the indication results for the first lighting area 1611, the second lighting area 1612, and the third lighting area 1613 according to the control instruction from the button. The indication result can instruct the output unit to control 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 through a cable. When the driver operates the operating member 1614, the control unit can receive the instruction transmitted by the operating member and determine the indication results of the driver for the first lighting area 1611, the second lighting area 1612, and the third lighting area 1613 according to the instruction. 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 according to 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.

[0056] As an optional implementation, the projection area of ​​the first lighting area 1611 on the third plane along the front-to-back direction is S1, and the projection area of ​​the front lighting assembly 161 on the third plane along the front-to-back direction 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 implementation, 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 implementation, the ratio of S1 to S2 can also be greater than or equal to 0.30 and less than or equal to 0.40. Under this setting, the ratio of S1 to S2 is within a suitable range, which can not only display the vehicle signal to meet the lighting requirements, but also limit the size of the front lighting assembly 161 as much as possible to achieve lightweight. It is understandable 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, the volume of the left and right turn lights is too small, and the vehicle signal cannot be clearly displayed; when the ratio of S1 to S2 is set smaller than this range, the first lighting area 1611 is too small, and the lighting intensity of the position light is insufficient. It is understandable that S1 and S2 can be 0.22, 0.28, 0.34, 0.42, etc.

[0057] like Fig.12 , Fig.13 As shown, the rear lighting assembly 162 is arranged at the rear of the seat barrel 142 and below the seat cushion 141. The seat barrel 142 includes a mounting portion 1421, and the rear lighting assembly 162 is arranged on the mounting portion 1421 by bolts. The rear lighting assembly 162 integrates the functions of the position light, the brake light and the rear turn light. The rear lighting assembly 162 of the common electric two-wheeled vehicle 100 often sets up the position light, the brake light and the rear turn light separately, with low integration and more complicated 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 in the left and right directions. The middle part of the rear lighting assembly 162 is set as the first lighting area 1621, and the two ends of the rear lighting assembly 162 are respectively set as the second lighting area 1622 and the third lighting area 1623. The first lighting area 1621 includes a position light and a brake light, and the brightness of the position light is less than that of 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 of the first lighting area 1621 is turned on, and the turn signals of 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 of the first lighting area 1621 is turned on, and the turn signals of 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 of the first lighting area 1621 is turned on, and the turn signals of the second lighting area 1622 or the third lighting area 1623 are turned on. Under this setting mode, the rear lighting assembly 162 integrates multiple lights, the layout is more compact, and the space utilization rate is higher. The position light and brake light parts of the present application reflect the light from 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 from the light source through a very small thick-walled part to achieve the required spacing distance of the turn signals.

[0058] As an optional embodiment, along the up-down 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. Under this setting, the ratio of S3 to S4 is within a suitable range, and the rear lighting assembly 162 is compactly arranged and can also display vehicle signals. It is understandable that when the ratio of S3 to S4 is set larger than this range, the rear lighting assembly 162 is too much hidden under the seat cushion 141 and cannot meet the lighting requirements; when the ratio of S3 to S4 is set smaller than this range, when viewed from the top and bottom of the electric two-wheeled vehicle 100, the overlap between the lighting assembly 162 and the seat cushion 141 is too low, and the space utilization rate is not high. It is understandable that the ratio of S3 to S4 can be 0.55, 0.62, 0.75, etc.

[0059] like Fig.10 , Fig.14 As shown, the rear wheel 132 also includes a tire 1322, a rim 1323, a spoke 1324 and a valve 1325. The tire 1322 is used to store gas. The valve 1325 is arranged on the tire 1322, and is used to inflate and deflate the tire 1322. Specifically, the valve 1325 is arranged on the side of the rim 1323 that contacts the spoke 1324, and the valve 1325 is inclined to the side away from the walking mechanism 13. When viewed from the up and down direction of the electric two-wheeled vehicle 100, the valve 1325 and the rear wheel 132 are basically overlapped. The rim 1323 is provided with a mounting surface 1323a for connecting with the valve 1325, and the valve 1325 is basically 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 within a special angle range, the valve 1325 is set to be straight and does not need to be bent, which meets the convenience of inflation while saving costs.

[0060] As an optional embodiment, the electric two-wheeled vehicle 100 further includes a braking mechanism (not shown), and a braking mechanism is provided on one side of the rear wheel 132. In order to avoid the valve 1325 from having an adverse effect on 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 interference with other mechanisms as much as possible, while achieving an aesthetic effect. It is understood that when 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, and is exposed to the outside and easily damaged and affects the appearance. When 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 the spoke 1324, which is easy to interfere during inflation and inconvenient. 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.

[0061] 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 along the front and rear direction of the electric two-wheeled vehicle, the support plate 1114 extends along the left and right direction, the support plate 1114 is on the main beam tube 1111, and the width distance of the support plate 1114 extending along the left and right direction is L1, the distance from the axis center of the front wheel 131 to the axis center 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 lighter.

[0062] 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: A vehicle frame, the vehicle frame comprising a main frame; A walking mechanism, the walking mechanism comprising front wheels and rear wheels; A suspension mechanism, wherein the suspension mechanism is at least partially disposed on the main frame, and the front wheel and the rear wheel are connected to the main frame via the suspension mechanism; 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 frame further comprises a support frame assembly, the support frame assembly is fixedly connected to the main frame, the support frame assembly comprises a mounting plate, an upper support frame and a lower support frame, the upper support frame is arranged on the upper part of the mounting plate, and the lower support frame is arranged on the lower part of the mounting plate; A plane perpendicular to the width direction of the electric two-wheeled vehicle is defined as a longitudinal plane, the projection of the mounting points of the upper support frame and the mounting plate on the longitudinal plane along the left-right direction is defined as projection point a, the projection of the mounting points of the lower support frame and the mounting plate on the longitudinal plane along the left-right direction is defined as projection point b, the projection of the connection point between the upper support frame and the lower support frame on the longitudinal plane along the left-right direction is defined as projection point c, and the lines connecting the projection point a, the projection point b and the projection point c form a triangle.

2. The electric two-wheeled vehicle according to claim 1, characterized in that: In the triangle formed by the line connecting the projection point a, the projection point b and the projection point c, the angle where the projection point c is located is the projection angle α, and the projection angle α can be set to be greater than or equal to 20° and less than or equal to 120°.

3. The electric two-wheeled vehicle according to claim 2, characterized in that: The projection angle α may be set to be greater than or equal to 40° and less than or equal to 100°.

4. The electric two-wheeled vehicle according to claim 2, characterized in that: The projection angle α may also be set to be 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: In the triangle formed by the line connecting the projection point a, the projection point b and the projection point c, the installation spacing between the projection point a and the projection point b is greater than or equal to 40 cm and less than or equal to 350 cm.

6. The electric two-wheeled vehicle according to claim 1, characterized in that: The upper support frame is bent downward to form two first bent portions, and the two first bent portions are fixedly connected to the mounting plate, defining a plane perpendicular to the length direction of the electric two-wheeled vehicle as a transverse plane, and the projections of the two first bent portions along the length direction on the transverse plane are basically in an "eight" shape.

7. The electric two-wheeled vehicle according to claim 1, characterized in that: The lower support frame includes two second bending portions, the two second bending portions are fixedly connected to the mounting plate, and the two second bending portions are both bent upward.

8. The electric two-wheeled vehicle according to claim 1, characterized in that: The main frame 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 all extend in the up-down direction, and the supporting cross tube is arranged between the second supporting vertical tube and the third supporting vertical tube.

9. The electric two-wheeled vehicle according to claim 8, characterized in that: The mounting plate is fixedly connected to the supporting transverse tube, and has a mounting point on each side of the supporting transverse tube.

10. The electric two-wheeled vehicle according to claim 8, characterized in that: The mounting plate is at least partially disposed on the second support vertical tube and the third support vertical tube, and the mounting plate has a connection point with each of the second support vertical tube and the third support vertical tube.

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