electric two-wheeler

Abstract

This application discloses an electric two-wheeled vehicle, comprising: a frame; the frame including a main frame and a sub-frame; a running gear including a front wheel and a rear wheel disposed below the frame; a suspension mechanism connecting the running gear to the frame; and a body panel, at least partially disposed on the frame; wherein the main frame includes a main beam tube, a support vertical tube, and a support plate, the main beam tube extending along the longitudinal direction of the electric two-wheeled vehicle, the middle of the main beam tube being recessed downward to form a recessed portion; the support plate is disposed in the recessed portion, the width distance of the support plate extending in the lateral direction is L1, the distance from the axle center of the front wheel to the axle center of the rear wheel is L2, and the ratio of L1 to L2 is greater than or equal to 0.1 and less than or equal to 0.4. With the above configuration, the frame has high support strength.

Description

TECHNICAL FIELD

[0001] The present application relates to electric vehicles, in particular to an electric two-wheeled vehicle. BACKGROUND

[0002] With the increasing emphasis on environmental protection and energy saving in current society, electric two-wheeled vehicles, as green energy-saving and emission-reducing transportation tools, have played an increasingly important role in public travel.

[0003] At present, the design of electric two-wheeled vehicles is increasingly miniaturized and lightweight, and the space of electric two-wheeled vehicles is increasingly reduced, and the requirement for lightweight is gradually increasing. The rear end of the electric two-wheeled vehicle is usually designed with a support frame for mounting a mudguard. The support frame is generally a metal piece with a large volume and weight, and it is difficult to achieve lightweight of the whole vehicle. How to reasonably set the support frame and use a simple structure to meet the strength requirement has been a problem to be solved in the field of electric two-wheeled vehicles. SUMMARY

[0004] 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 purpose, the technical scheme adopted by the present application is as follows:

[0006] An electric two-wheeled vehicle, comprising: a frame, the frame comprising a main frame; a walking mechanism, the walking mechanism comprising front wheels and rear wheels, the front wheels and the rear wheels being at least partially arranged on the frame; a suspension mechanism, the suspension mechanism being at least partially arranged on the frame, the front wheels and the rear wheels being connected with the main frame through the suspension mechanism; a battery assembly, the battery assembly being at least partially arranged on the frame; a vehicle body covering member, the vehicle body covering member at least partially covering the battery assembly; wherein the frame further comprises a support frame assembly, the support frame assembly being fixedly connected with the main frame, the support frame assembly comprising a mounting plate, an upper support frame and a lower support frame, the upper support frame being arranged on the upper portion of the mounting plate, the lower support frame being arranged on the lower portion of the mounting plate; on a longitudinal plane perpendicular to left-right direction, the projection of the upper support frame and the mounting point on the mounting plate along the left-right direction on the longitudinal plane is a projection point a, the projection of the lower support frame and the mounting point on the mounting plate along the left-right direction on the longitudinal plane is a projection point b, and the projection of the connecting point of the upper support frame and the lower support frame along the left-right direction on the longitudinal plane is a projection point c, the line connecting the projection point a, the projection point b and the projection point c forms a triangle.

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

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

[0009] Further, the projection angle a can 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 connecting line of the projection point a, the projection point b and the projection point c, the installation distance 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] Further, the upper support frame is downwardly bent to form two first bent portions, the two first bent portions are fixedly connected with the mounting plate, a plane perpendicular to the length direction of the electric two-wheeled vehicle is defined as a transverse plane, and the projection of the two first bent portions on the transverse plane along the length direction is substantially an "eight" shape.

[0012] Further, the lower support frame includes two second bent portions, the two second bent portions are fixedly connected with the mounting plate, and the two second bent portions are each upwardly bent.

[0013] Further, the main frame includes a support vertical pipe and a support horizontal pipe, the support vertical pipe includes a first support vertical pipe, a second support vertical pipe and a third support vertical pipe, the first support vertical pipe, the second support vertical pipe and the third support vertical pipe each extend along the up-down direction, and the support horizontal pipe is arranged between the second support vertical pipe and the third support vertical pipe.

[0014] Further, the mounting plate is fixedly connected to the support horizontal pipe, and there is one mounting point on each side of the support horizontal pipe.

[0015] Further, the mounting plate is at least partially arranged on the second support vertical pipe and the third support vertical pipe, and the mounting plate has one connecting point with the second support vertical pipe and the third support vertical pipe.

[0016] The electric two-wheeled vehicle provided by the application is provided with a support frame assembly, the support frame assembly 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 with each other in pairs, the projection of the mounting point on the first plane along the left-right direction surrounds a stable triangular structure, and an electric two-wheeled vehicle with high frame support strength is provided. BRIEF DESCRIPTION OF DRAWINGS

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

[0018] Figure 2 is a connection schematic view of the frame and the suspension mechanism of the application;

[0019] Figure 3 is a structural schematic view of the main frame of the application;

[0020] Figure 4 is a perspective structural schematic view of the main frame of the application from another perspective;

[0021] Figure 5 is a structure diagram of the support frame assembly of the present application; Figure 2 is an enlarged structure diagram of A in FIG. 1;

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

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

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

[0025] Figure 9 is a structure diagram of the seat cushion device of the present application;

[0026] Figure 10 is a structure diagram of the seat cushion device of the present application; Figure 9 is an enlarged structure diagram of B in FIG. 1;

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

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

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

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

[0031] Figure 15 is a structure diagram of the rear wheel of the present application. DETAILED DESCRIPTION

[0032] In order to make the person skilled in the art better understand the scheme of the present application, the technical scheme in the specific embodiment of the present application will be described clearly and completely below in combination with the drawings in the embodiment of the present application. It should be understood that, for those skilled in the art, the above description can be improved or changed, and all these improvements and changes shall belong to the protection scope of the appended claims of the present application.

[0033] As Figure 1 , Figure 2 , Figure 11As shown, this application provides an electric two-wheeled vehicle 100, which includes a frame 11, a suspension mechanism 12, a running gear 13, a seat 14, a body cover 15, a lighting mechanism 16, and a battery assembly 17. The frame 11 forms an integral structure and supports the battery assembly 17 and the body cover 15. The running gear 13 is connected to the frame 11 via the suspension mechanism 12 to drive the electric two-wheeled vehicle 100. The seat 14 is at least partially connected to the frame 11 and provides a place for the driver to sit. The battery assembly 17 is at least partially disposed within a space formed around the frame 11. The body cover 15 covers the frame 11, isolating other components within the frame 11 from the outside environment, and protecting the internal equipment and structure of the vehicle. The lighting mechanism 16 provides illumination, turn 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 to drive it. To clearly illustrate the technical solution of this application, the following are also defined: Figure 1 The front, back, top, bottom, left, and right sides are shown.

[0034] like Figures 1 to 4 As 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 reinforcing assembly 1113, and a support plate 1114. Specifically, the main beam tube 1111 extends from the front to the rear of the electric two-wheeled vehicle 100 in a longitudinal direction, with both ends extending upwards and a recessed portion 1111a formed downwards 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, which are respectively located in the middle and rear of the main beam tube 1111. The support plate 1114 is located in the recessed portion 1111a to widen the width of the recessed portion 1111a, facilitating support for the driver's feet. The first support vertical tube 1112a, the second support vertical tube 1112b, and the third support vertical tube 1112c extend vertically. The subframe 112 is disposed at the upper ends of the first support vertical tube 1112a, the second support vertical tube 1112b, and the third support vertical tube 1112c, and forms a receiving space with the first support vertical tube 1112a, the second support vertical tube 1112b, and the third support vertical tube 1112c. The battery assembly 17 is disposed at least within this receiving space.

[0035] As an optional embodiment, the support plate 1114 extends along the left-right direction and is substantially symmetrical about the main beam tube 1111 along the left-right direction. As an embodiment, the number of the support plate 1114 can be set to 2, and it can be understood that the number of the support plate 1114 can also be other reasonable numbers, such as 1, 3, etc., as long as the support strength of the driver's feet during riding can be met. The walking mechanism 13 includes a front wheel 131 and a rear wheel 132 arranged below the frame 11, and the front wheel 131 is a steering wheel of the electric two-wheeled vehicle 100, and the rear wheel is 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 first straight line is a line connecting the axis of the front wheel 131 to the axis of the rear wheel. The width distance of the support plate 1114 extending along 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 predetermined 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. In this arrangement, the ratio of L1 to L2 is in a suitable range, that is, it can provide a suitable width for the driver to place the feet and can limit the width of the support plate 1114 as much as possible to achieve lightweight. It can be understood that when the ratio of L1 to L2 is set to be 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 to be less than this range, the driver cannot comfortably place his feet, which is not conducive to riding. It can be understood that the ratio of L1 to L2 can be 0.12, 0.15, 0.25, etc.

[0036] As an optional embodiment, the projection of the sub-frame 112 on the second plane along the up-down direction is substantially a "U" shape opening backward, and the sub-frame 112 includes a first fixed part 1121 and a second fixed part 1122. The first support vertical tube 1112a is arranged on the first fixed part 1121, and the second support vertical tube 1112b and the third support vertical tube 1112c are arranged on the second fixed part 1122. As an optional embodiment, the first fixed part 1121 is arranged as a plate member, and the second fixed part 1122 is arranged as a tube member. In this arrangement, the connection strength of the sub-frame 112 is met while more accommodation space is provided. At the same time, the "U" shaped sub-frame 112 can appropriately adjust the shape of the seat cushion device 14 through the structure of the upper part of the adjusting mechanism, and better support the seat cushion device 14.

[0037] As Figure 3As shown, the reinforcing component 1113 includes a first reinforcing member 1113a and a second reinforcing member 1113b. A first supporting vertical tube 1112a is disposed on the recessed portion 1111a, and the first reinforcing member 1113a is disposed at the connection between the first supporting vertical tube 1112a and the recessed portion 1111a. The second supporting vertical tube 1112b and the third supporting vertical tube 1112c are disposed on the main beam tube 1111 and located behind the first supporting vertical tube 1112a. Taking the plane perpendicular to the left-right direction as the first plane, the second supporting vertical tube 1112b and the third supporting vertical tube 1112c are substantially symmetrical about the first plane along the left-right direction. The second supporting vertical tube 1112b and the third supporting vertical tube 1112c connect with the main beam tube 1111 to form a substantially "Y"-shaped connection. The second reinforcing member 1113b is provided with a "Y"-shaped connection. The first reinforcing member 1113a is disposed on the arc surface of the main beam tube 1111 and the first support vertical tube 1112a. The second reinforcing member 1113b is disposed on the arc surface of the main beam tube 1111, the second support vertical tube 1112b, and the third support vertical tube 1112c. Both the first reinforcing member 1113a and the second reinforcing member 1113b are disposed at the welding points of the frame 11, which enhances the rigidity and strength of the key connection points and does not expose the welding points, making it more aesthetically pleasing.

[0038] like Figures 3 to 6 As shown, the frame 11 also includes a support frame assembly 113. The main frame 111 also includes a support cross tube 1115, which 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 less 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 to the rear of the electric vehicle, and is used to mount mudguards, license plates, 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 disposed on the support cross tube 1115 and the second and third support vertical tubes 1112b and 1112c. The upper support frame 1131 and the lower support frame 1132 are connected to the frame 11 via the mounting plate 1133.

[0039] As an optional implementation, the upper part of the mounting plate 1133 is arranged on the support horizontal pipe 1115, and there is one mounting point on the left and right sides of the support horizontal pipe 1115. The lower part of the mounting plate 1133 is connected to the second support vertical pipe 1112b and the third support vertical pipe 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 and downward direction of the electric scooter 100, the lower support frame 1132 extends in the rear and upward direction of the electric scooter 100, the left and right sides of the upper support frame 1131 are respectively bent downward to form two first bent parts 1131a, and the upper support frame 1131 is fixedly connected to the mounting plate 1133 through the two first bent parts 1131a. A plane perpendicular to the front and rear direction is a third plane. The projection of the two first bent parts 1131a on the third plane in the front and rear direction is an "eight" shape. The left and right sides of the lower support frame 1132 are respectively provided with two second bent parts 1132a which are bent upward, and the lower support frame 1132 is fixedly connected to the mounting plate 1133 through the two second bent parts 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 parts 1131a and the second bent parts 1132a, the weight supported by the support frame assembly 113 can be evenly distributed to the mounting plate 1133, thereby improving the load capacity.

[0040] As an optional implementation, the mounting point of the upper support frame 1131 on the mounting plate 1133 is projected on the first plane in the left-right direction as a projection point a, the mounting point of the lower support frame 1132 on the mounting plate 1133 is projected on the first plane in the left-right direction as a projection point b, and the connection point of the upper support frame 1131 and the lower support frame 1132 is projected on the first plane in the left-right direction as a projection point c. The projection point a, the projection point b, and the projection point c form a triangle, that is, the upper support frame 1131 and the lower support frame 1132 form a stable triangular structure. In this arrangement, the support frame assembly 113 is more stable in structure. The distance between the projection point a and the projection point b is the mounting interval D, and the angle at the projection point c is the projection angle a. Specifically, the projection angle a is set within a certain range, more specifically, the projection angle a can be set to be greater than or equal to 20° and less than or equal to 120°; as an optional implementation, the projection angle a 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 a can also be set to be greater than or equal to 60° and less than or equal to 80°. In this arrangement, the projection angle a is within an appropriate range, that is, it can provide a suitable strength, and at the same time, it can limit the length of the support frame assembly 113 as much as possible to achieve lightweight. It can be understood that when the projection angle a is set to be greater than this range, the length of the support frame assembly 113 is too small to meet the installation requirements; when the projection angle a 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 strength of the installation is easily affected. It can be understood that the projection angle a can be set to 25°, 30°, 55°, 70°, etc.

[0041] Specifically, the mounting interval D is set within a certain range, more specifically, the mounting interval 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 mounting interval D can also be set to be greater than or equal to 80 cm and less than or equal to 300 cm; as an optional implementation, the mounting interval D can also be set to be greater than or equal to 150 cm and less than or equal to 250 cm. In this arrangement, the mounting interval D is within an appropriate range, that is, it can provide a suitable strength, and at the same time, it can limit the length of the support frame assembly 113 as much as possible to achieve lightweight. It can be understood that when the mounting interval D is set to be greater than this range, the length of the support frame assembly 113 is too small to meet the installation requirements; when the projection angle a 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 the strength of the installation is easily affected. It can be understood that the mounting interval D can be set to 100 cm, 180 cm, 200 cm, 280 cm, etc.

[0042] As Figure 2 , Figure 7As shown, as an implementation manner, the suspension mechanism 12 comprises 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 shaft 1321. The suspension mechanism 12 further comprises a connecting piece 122, and the connecting piece 122 is at least partially arranged on the rear wheel 132. The rear fork 121 itself surrounds an internal space, and the connecting piece 122 is at least partially arranged in the internal space and abuts against the rear fork 121. In a first plane perpendicular to the left-right direction, a projection of the connecting piece 122 on the first plane along the left-right direction is a first projection area, and a projection of the rear fork 121 on the first plane along the left-right direction is a second projection area, and the first projection area substantially overlaps with the second projection area. The rear wheel 132 comprises a rear wheel shaft 1321, and the rear wheel shaft 1321 penetrates the connecting piece 122 and the rear fork 121 along the left-right direction. Specifically, the cross section of the two ends of the rear wheel shaft 1321 is arranged as an ellipse, and the connecting piece 122 is provided with a mounting hole corresponding in shape. It can be understood that the cross section of the two ends of the rear wheel shaft 1321 can also be arranged as a square, a rectangle or other non-circular shapes, and the connecting piece 122 is provided with a mounting hole corresponding in shape, and the rear wheel shaft 1321 is limited by the connecting piece 122 and cannot rotate with the rear wheel 132. In this arrangement, the rear fork 121 is connected to the rear wheel shaft 1321 through the connecting piece 122, the connecting piece 122 is arranged as a metal material, the torque is absorbed by the connecting piece 122, and the stress at the connection between the rear fork 121 and the rear wheel shaft 1321 is dispersed. The rear fork 121 is not easy to deform and wear, and the freedom of material selection of the rear fork 121 is increased, and the rear fork 121 is more lightweight.

[0043] As an optional implementation, the rear wheel shaft 1321 is arranged through the connecting piece 122 and the rear fork 121, and the connecting piece 122 is fixed on the rear fork 121 by bolts. The connecting piece 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 piece 122 to the rear wheel shaft 1321, and the inner contour of the mounting hole corresponds to the shape of the cross section of the two ends of the rear wheel shaft 1321. The connecting piece 122 abuts against the rear wheel shaft 1321, which can prevent the rear wheel shaft 1321 from rotating. The second mounting portion 1222 is provided with two mounting holes for connecting the connecting piece 122 to the rear fork 121. 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 requirement is met. Corresponding to the second mounting portion 1222, the rear fork 121 is provided with a corresponding number of mounting positions. Each mounting hole is connected with the mounting point on the rear fork 121, and the mounting position is arranged on one side of the mounting hole. The mounting hole and the mounting position are fixedly connected by bolts, so as to realize the fixation of the rear fork 121 and the connecting piece 122. Specifically, the bolts are arranged in the left-right direction, and the axis of the bolt is basically parallel to the axis of the rear wheel shaft 1231. At this time, the mounting holes of the first mounting portion 1221 and the second mounting portion 1222 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 bolt is basically perpendicular to the axis of the rear wheel shaft 1231. The rear fork 121 further includes a wiring portion 1211, which is provided with a plurality of limiting holes for regulating the wiring of the rear of the electric two-wheeled vehicle 100.

[0044] As Figure 2 , Figure 8As shown, the suspension mechanism 12 further comprises a shock absorber 123 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. The upper end of the rear fork 121 is further provided with a mounting portion 1212, one end of the shock absorber 123 is connected to the rear fork 121 through the mounting portion 1212, and the frame 11 further comprises a connecting bracket 114, 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 support cross pipe 1115 and extends forward of the vehicle, and the connecting bracket 114 is arranged in the accommodating space formed by the first support vertical pipe 1112a, the second support vertical pipe 1112b and the third support vertical pipe 1112c, that is, the shock absorber 123 is at least partially arranged in the accommodating space. In this arrangement, the shock absorber 123 is basically hidden, which is more beautiful; at the same time, space can be saved without affecting performance. Further, the number of shock absorbers 123 can be set to one. The included angle β 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 ensures the damping effect while also saving space.

[0045] As an optional implementation, the shock absorber 123 comprises a first connecting end 1231 and a second connecting end 1232, the first connecting end 1231 is arranged on the connecting bracket 114, and the second connecting 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 connecting end 1231 on the second plane in the up-down direction is a first projection point, the projection of the axis of the front wheel 131 on the second plane in the up-down 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 connecting end 1232 on the second plane in the up-down direction is a third projection point, and the projection of the leftmost point of the outer edge of the rear wheel 132 on the second plane in the up-down direction is a fourth projection point, and the distance between the third projection point and the fourth projection point is a projection length D2. The projection point of the first connecting end 1231 on the second plane in the up-down direction is located in front of the projection point of the second connecting end 1232 on the second plane in the up-down direction. Specifically, the ratio of the projection length D1 to the projection length D2 can 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 can 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 can be greater than or equal to 90 and less than or equal to 100. In this arrangement, the ratio of the projection length D1 to the projection length D2 can be in a suitable range, that is, it can meet the shock absorption requirement and save space as much as possible. It can be understood that when the ratio of the projection length D1 to the projection length D2 is 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 requirement and affects the driver's experience; when the ratio of the projection length D1 to the projection length D2 is less than this range, the shock absorber 123 is inclined to the accommodating space formed around the first support vertical pipe 1112a, the second support vertical pipe 1112b, and the third support vertical pipe 1112c, or the length of the shock absorber 123 is too long, the shock absorber 123 occupies too much space, and cannot meet the arrangement requirement. It can be understood that the ratio of the projection length D1 to the projection length D2 can be 75, 85, 96, etc.

[0046] As Figure 3 , Figure 9As shown, the seat cushion device 14 includes a seat cushion 141, a seat bucket 142 and a mounting assembly 143. The seat bucket 142 is arranged below the seat cushion device 14, and the battery assembly 17 is arranged in the seat bucket 142. The seat cushion 141 is rotatably connected with the seat bucket 142 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 bucket 142, both of which are arranged in an arc shape. The mounting assembly 143 is arranged on the second support surface. The frame 11 further includes a battery mounting rack 115, which is at least partially connected with the first support vertical pipe 1112a, the second support vertical pipe 1112b and the third support vertical pipe 1112c. An upper end of the battery mounting rack 115 is provided with a platform part 1151 for placing the seat bucket 142. The connection lines of the battery mounting rack 115 with the mounting positions of the first support vertical pipe 1112a, the second support vertical pipe 1112b and the third support vertical pipe 1112c form a triangle, which is more stable. In addition, the accommodating space formed by the first support vertical pipe 1112a, the second support vertical pipe 1112b and the third support vertical pipe 1112c can provide stronger protection for the battery assembly 17.

[0047] As an optional implementation, the mounting assembly 143 comprises a first mounting plate 1431, a second mounting plate 1432 and a pin shaft 1433. The first mounting plate 1431 comprises a first mounting portion 1431a for connecting to the seat cushion 141 and a first connecting portion 1431b for connecting to the pin shaft 1433. The second mounting plate 1432 comprises a second mounting portion (not shown) for connecting to the seat bucket 142 and a second connecting portion (not shown) for connecting to the pin shaft 1433. The seat cushion 141 comprises a protruding portion 1411 located on the second support surface and formed integrally with the seat cushion 141. The protruding portion 1411 can block the axial movement of the pin shaft 1433. Specifically, the first mounting plate 1431 and the second mounting plate 1432 are fixed to the seat cushion 141 and the seat bucket 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, the inner contour of the mounting hole corresponding to the inner contour and number of the mounting hole provided on the seat cushion 141 and the seat bucket 142. The first connecting portion 1431b and the second connecting portion are fixed by the pin shaft 1433 to realize the rotational connection of the seat cushion 141 and the seat bucket 142. The pin shaft 1433 comprises a pin shaft head 1433a, and the protruding portion 1411 is arranged to abut against the assembled pin shaft head 1433a. During assembly, the first mounting plate 1431 and the second mounting plate 1432 are first connected by the pin shaft. 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 assembly, the protruding portion 1411 abuts against the pin shaft head 1433a, blocking the axial movement of the pin shaft 1433. With this arrangement, the protruding portion 1411 can prevent the pin shaft 1433 from disengaging without the need for nuts or split pins.

[0048] As shown in Figure 9 The seat cushion device 14 further comprises a seat cushion lock assembly 144 for locking the seat cushion 141 to form a relatively closed space with the seat bucket 142. Specifically, the seat cushion lock assembly 144 comprises a switch 1441, a locking member 1442 and a seat cushion cable 1443. The seat cushion 141 comprises a first state of being locked to the vehicle frame 11 and a second state of being unlocked with 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 through the locking member 1442, so that the seat cushion 141 remains in 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 be triggered in response to the switch 1441 to disconnect the connection between the seat cushion 141 and the locking member 1442, so that the seat cushion 141 switches from the first state to the second state. The switch 1441 is arranged at the front of the electric two-wheeled vehicle 100 for easy operation by the driver.

[0049] As an optional implementation, the seat cushion cable 1443 comprises a first protective layer 1443a, a second protective layer 1443b, a cable rope 1443c and a cable head (not shown in the figure). 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 in a straight line type low spiral winding steel wire. The cable rope 1443c is arranged at the innermost layer and can be displaced relative to the second protective layer 1443b. The cable rope 1443c is arranged in a metal material and is not easy to deform. The cable head is arranged at the end of the cable rope 1443, and the cable head is used to cooperate with the locking piece 1442 to lock and unlock. The seat cushion further comprises a connecting piece (not shown in the figure), one end of the locking piece 1442 is connected with the cable head, and the cable head can be triggered in response to the switch 1441 to disconnect the connecting piece and the locking piece 1442, so that the seat cushion 141 is switched from the first state to the second state.

[0050] Specifically, the cable rope 1443c is stretched out, the cable head is greater than or equal to a fixed distance from the end of the second protective layer 1443b, and the locking piece 1442 is locked. The cable rope 1443c is retracted into the second protective layer 1443b, the cable head is less than or equal to an unlocking distance from the end of the second protective layer 1443b, and the locking piece 1442 is unlocked. The fixed distance is greater than the unlocking distance. When the driver locks with the switch 1441, the cable rope 1443c is elongated, and the cable head is stretched out of the second protective layer 1443b by a fixed distance. When the driver unlocks with the switch 1441, the cable rope 1443c is pulled tight, the length of the cable rope 1443c stretched out of the second protective layer 1443b is reduced, and when the distance of the cable rope 1443c stretched out of the second protective layer 1443b is less than the unlocking distance, the seat cushion lock assembly 144 is unlocked. In this unlocking mode, the second protective layer 1443b will not be lengthened by bending the seat cushion cable 1443 with an external force, for example, by bending it with the hand. 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 is still less than or equal to the initial length of the second protective layer 1443b, that is, the length of the cable rope 1443c stretched out of the second protective layer 1443b will not be reduced. At this time, without using the switch 1441, the part of the cable rope 1443c stretched out of the second protective layer 1443b will not be less than the unlocking distance. Therefore, under this arrangement, even if the exposed part of the seat cushion cable 1443 is bent by an external force, it will not be unlocked, improving the safety of the seat cushion lock assembly 144 and reducing the requirements for the arrangement position of the seat cushion cable 1443.

[0051] As 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 a position light and left and right turn signal lights arranged on the left and right sides. In a common electric two-wheeled vehicle 100, the left and right turn signal lights of the front lighting assembly 161 are arranged separately on the left and right sides. In this way, the integration of the vehicle front light is low, and the wiring is more complex. At the same time, the left and right turn signal lights arranged separately on the left and right sides are prone to damage and other problems, which can cause the service life of the left and right turn signal lights to be low, and frequent replacement is required, increasing the use cost. In this arrangement, the front lighting assembly 161 is arranged more compactly, has a higher space utilization rate, and is not prone to damage.

[0052] As an optional implementation, 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). In a first plane perpendicular to the left-right direction, the electric two-wheeled vehicle 100 is substantially symmetrical about the first plane. The front lighting assembly 161 extends along the left-right direction of the electric two-wheeled vehicle, the first lighting area 1611 is arranged at the middle of the front lighting assembly 161, and the second lighting area 1612 and the third lighting area 1613 are arranged at the two ends of the front lighting assembly 161, respectively. The second lighting area 1612 and the third lighting area 1613 are substantially symmetrical about the first plane.

[0053] The first lighting area 1611 is provided with a position light, and the second lighting area 1612 and the third lighting area 1623 are each provided with a position light and a turn signal light. 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 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. On the second lighting area 1612 or the third lighting area 1613, the position light and the turn signal light share a lighting area, and the light emitting forms of the position light and the turn signal light are both first reflecting light such as a position light source through a reflecting bowl, and then punching out light through a thick-walled piece light distribution pattern; the light of the position light and the turn signal light is reflected and transmitted out through different parts of the same reflecting bowl and thick-walled piece, realizing two optical functions in the same area.

[0054] As an optional implementation, the front lighting assembly 161 further comprises an operating member 1614. The control module comprises a control unit and an output unit, and the operating member 1614 is capable of transmitting a control instruction to the control unit in response to an external force, and the control unit is capable of determining an indication result for the first lighting area 1611, the second lighting area 1612 and the third lighting area 1613 according to the control instruction from the key. The indication result is capable of indicating that the output unit controls different light of the first lighting area 1611, the second lighting area 1612 and the third lighting area 1613. Specifically, the control unit is capable of being connected with the operating member through a cable, and when the driver operates the operating member 1614, the control unit is capable of receiving the instruction transmitted by the operating member and determining the indication result of the driver for the first lighting area 1611, the second lighting area 1612 and the third lighting area 1613 according to the instruction. The operating member 1614 can be a key, and the key generates a control instruction in response to the force applied by the driver contacting, pressing or the like to the key and transmits the instruction to the control unit, and determines the indication result of the driver 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 light”, “the second lighting area 1612 switches to the position light”, “the third lighting area 1613 switches to the turn light” or “the third lighting area 1613 switches to the position light”.

[0055] As an optional implementation, the projection area of the first lighting area 1611 on the third plane in the front-rear direction is S1, the projection area of the front lighting assembly 161 on the third plane in the front-rear direction is S2, and 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. In 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 demand, but also limit the size of the front lighting assembly 161 as much as possible to achieve lightweight. It can be understood that when the ratio of S1 to S2 is set to be greater than this range, the area of the second lighting area 1612 or the third lighting area 1613 is too small, and the volume of the left and right turn lights is too small, which cannot clearly display the vehicle signal; when the ratio of S1 to S2 is set to be less than this range, the first lighting area 1611 is too small, and the illumination intensity of the position light is insufficient. It can be understood that S1 and S2 can be 0.22, 0.28, 0.34, 0.42, etc.

[0056] As Figure 12 ,Figure 13 As shown, the rear lighting assembly 162 is arranged behind the seat bucket 142 and below the seat cushion 141. The seat bucket 142 comprises 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 conventional electric two-wheeled vehicle 100 usually separately sets up the position light, the brake light and the rear turn light, and has low integration and more complex wiring. The rear lighting assembly 162 comprises a first lighting area 1621, a second lighting area 1622 and a third lighting area 1623, and the rear lighting assembly 162 extends along the left-right direction. The middle part of the rear lighting assembly 162 is arranged as the first lighting area 1621, and the two ends of the rear lighting assembly 162 are respectively arranged as the second lighting area 1622 and the third lighting area 1623. The first lighting area 1621 comprises the position light and the 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 the turn light. The electric two-wheeled vehicle 100 comprises a normal driving state, a braking state and a turning state. When the electric two-wheeled vehicle 100 is in the normal driving state, the position light of the first lighting area 1621 is turned on, and the turn lights of the second lighting area 1622 and the third lighting area 1623 are turned off; when the electric two-wheeled vehicle 100 is in the braking state, the brake light of the first lighting area 1621 is turned on, and the turn lights of the second lighting area 1622 and the third lighting area 1623 are turned off; when the electric two-wheeled vehicle 100 is in the turning state, the position light of the first lighting area 1621 is turned on, and the turn light of the second lighting area 1622 or the third lighting area 1623 is turned on. In this arrangement, the rear lighting assembly 162 integrates multiple lights, and is arranged more compactly and has higher space utilization. The position light and the brake light part of the present application reflects the light source light through the reflecting bowl and then transmits the light through the light distribution inner cover, so as to achieve the required brightness of the brake light; the turn light part refracts the light source light through the extremely small thick-walled part, so as to achieve the requirement of the interval distance of the turn light.

[0057] As an optional implementation, in 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, the projection area of the rear lighting assembly 162 on the second plane is S4, and 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 implementation, 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 implementation, the ratio of S3 to S4 can also be greater than or equal to 0.70 and less than or equal to 0.80. In this arrangement, the ratio of S3 to S4 is within an appropriate range, and the rear lighting assembly 162 is arranged compactly while still being able to display vehicle signals. It can be understood that if the ratio of S3 to S4 is set to be greater than this range, the rear lighting assembly 162 is hidden too much under the seat cushion 141 and cannot meet the lighting requirements; if the ratio of S3 to S4 is set to be less than this range, the lighting assembly 162 and the seat cushion 141 have too low an overlap in the up-down direction of the electric two-wheeled vehicle 100, and the space utilization rate is not high. It can be understood that the ratio of S3 to S4 can be 0.55, 0.62, 0.75, etc.

[0058] As shown in Figure 10 、 Figure 14 , the rear wheel 132 also includes a tire 1322, a rim 1323, spokes 1324, and a valve stem 1325. The tire 1322 is used to store gas. The valve stem 1325 is provided on the tire 1322 and is used to inflate and deflate the tire 1322. Specifically, the valve stem 1325 is provided on the side of the rim 1323 that is in contact with the spokes 1324, and the valve stem 1325 is inclined away from the walking mechanism 13. In the up-down direction of the electric two-wheeled vehicle 100, the valve stem 1325 substantially overlaps the rear wheel 132. The rim 1323 is provided with a mounting surface 1323a for connecting with the valve stem 1325, and the valve stem 1325 is substantially perpendicular to the mounting surface 1323a. The included 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 arrangement, because the mounting surface 1323a and the second plane are set to a special angle range, the valve stem 1325 is set to be linear and does not need to be bent, meeting the convenience of inflation while saving costs.

[0059] As an optional implementation, the electric two-wheeled vehicle 100 further comprises a braking mechanism (not shown in the figure), and the braking mechanism is arranged on one side of the rear wheel 132. In order to avoid the adverse effects of the air valve 1325 on the arrangement and installation of the braking mechanism, and to facilitate the inflation of the walking mechanism 13, the air valve 1325 and the braking mechanism are arranged on the two sides of the rear wheel 132, respectively. As another implementation, the included 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 included 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°. In this arrangement, the included angle γ between the mounting surface 1323a and the second plane is set to be in a suitable range, that is, it can meet the inflation requirement, and as far as possible, it does not interfere with other mechanisms, and at the same time, it achieves an aesthetic effect. It can be understood that when the included angle γ between the mounting surface 1323a and the second plane is set to be greater than this range, the air valve 1325 is too far away from the rim 1323, which is exposed and easy to be damaged and affects the aesthetics. When the included angle γ between the mounting surface 1323a and the second plane is set to be less than this range, the air valve 1325 is too close to the rim 1323 and the spoke 1324, which is easy to interfere when inflating and is not convenient. It can be understood that the included angle γ between the mounting surface 1323a and the second plane can be set to 26°, 32°, 34°, 37°, etc.

[0060] In this application, by arranging the main frame 111 of the electric two-wheeled vehicle 100 with a main beam tube 1111 and a support plate 1114, the main beam tube 1111 extends in the front-rear direction of the electric two-wheeled vehicle, the support plate 1114 extends in the left-right direction, the support plate 1114 is on the main beam tube 1111, the width distance of the support plate 1114 extending in the left-right direction 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 in a certain range. In this arrangement, the frame 11 meets the strength requirement and is more lightweight.

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

Claims

1. An electric two-wheeled vehicle, comprising: a frame, the frame comprising a main frame; a walking mechanism, the walking mechanism comprising a front wheel and a rear wheel; a suspension mechanism, the suspension mechanism being at least partially disposed on the main frame, the front wheel and the rear wheel being connected with the main frame through the suspension mechanism; a battery assembly, the battery assembly being at least partially disposed on the frame; a body cover, the body cover at least partially covering the battery assembly; characterized in that, the frame further comprises a support frame assembly, the support frame assembly being fixedly connected with the main frame, the support frame assembly comprising a mounting plate, an upper support frame and a lower support frame, the upper support frame being disposed on the upper portion of the mounting plate, the lower support frame being disposed on the lower portion of the mounting plate; defining a longitudinal plane as a plane perpendicular to the width direction of the electric two-wheeled vehicle, the projection of the upper support frame and the mounting point on the mounting plate along the left-right direction on the longitudinal plane being a projection point a, the projection of the lower support frame and the mounting point on the mounting plate along the left-right direction on the longitudinal plane being a projection point b, the projection of the connecting point of the upper support frame and the lower support frame along the left-right direction on the longitudinal plane being a projection point c, the connecting line of the projection point a, the projection point b and the projection point c forming a triangle; in the triangle formed by the connecting line of the projection point a, the projection point b and the projection point c, the angle at the projection point c being a projection angle a, the projection angle a being set to be greater than or equal to 20° and less than or equal to 120°; the upper support frame is bent downward to form two first bending portions, the two first bending portions being fixedly connected with the mounting plate, defining a transverse plane as a plane perpendicular to the length direction of the electric two-wheeled vehicle, the projection of the two first bending portions along the length direction on the transverse plane being substantially an "eight" shape; the lower support frame comprising two second bending portions, the two second bending portions being fixedly connected with the mounting plate, the two second bending portions being both bent upward; the main frame comprising a support vertical tube and a support horizontal tube, the support vertical tube comprising a first support vertical tube, a second support vertical tube and a third support vertical tube, the first support vertical tube, the second support vertical tube and the third support vertical tube all extending along the up-down direction, the support horizontal tube being disposed between the second support vertical tube and the third support vertical tube; the mounting plate being at least partially disposed on the second support vertical tube and the third support vertical tube, and the mounting plate having one connecting point with the second support vertical tube and the third support vertical tube respectively.

2. The electric two-wheeled vehicle according to claim 1, characterized by, the projection angle a being set to be greater than or equal to 40° and less than or equal to 100°.

3. The electric two-wheeled vehicle of claim 1, wherein, the projection angle a being set to be greater than or equal to 60° and less than or equal to 80°.

4. The electric two-wheeled vehicle of claim 1, wherein, in the triangle formed by the connecting line of the projection point a, the projection point b and the projection point c, the mounting interval between the projection point a and the projection point b being greater than or equal to 40 cm and less than or equal to 350 cm.

5. The electric two-wheeled vehicle of claim 1, wherein, the mounting plate being fixedly connected to the support horizontal tube, and each having one mounting point on both sides of the support horizontal tube.

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