Electric two-wheeled vehicle

Abstract

The application discloses an electric two-wheeled vehicle, which comprises a frame, the frame comprising a main frame and a sub-frame; a walking mechanism, the walking mechanism comprising a front wheel and a rear wheel arranged below the frame; a suspension mechanism, the suspension mechanism connecting the walking mechanism with the frame; a vehicle body cover, the vehicle body cover being arranged at least partially on the frame; wherein the main frame comprises a main beam pipe, a support vertical pipe and a support plate, the main beam pipe extending along the length direction of the electric two-wheeled vehicle, the middle part of the main beam pipe being concave downward to form a concave part; the support plate is arranged in the concave part, the support plate extending along the width direction with a width distance of L1, the distance from the axis of the front wheel to the axis of the rear wheel being set as L2, the ratio of L1 to L2 being greater than or equal to 0.1 and less than or equal to 0.4. Through the above arrangement, the electric two-wheeled vehicle with high frame strength and light weight is provided.

Description

Technical Field

[0001] This invention relates to electric vehicles, and more particularly to an electric two-wheeled vehicle. Background Technology

[0002] With the increasing emphasis on environmental protection and energy conservation in society, electric two-wheelers, as a green, energy-saving, and emission-reducing mode of transportation, are playing an increasingly important role in public transportation.

[0003] Currently, electric two-wheelers are becoming increasingly smaller and lighter in design. As their space decreases, the requirements for lightweight design become more stringent. The frame, as the main supporting component and generally made of metal, occupies a significant amount of volume and weight. How to rationally design the frame of an electric two-wheeler to meet the requirements for lightweight design while maintaining strength has always been a pressing issue in the electric two-wheeler industry. Summary of the Invention

[0004] To address the aforementioned issues, this application provides an electric two-wheeler with a high-strength and lightweight frame.

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

[0006] An electric two-wheeled vehicle includes a frame, the frame including a main frame; a running gear including a front wheel and a rear wheel, the front wheel and the rear wheel being at least partially mounted on the frame; a suspension mechanism, the suspension mechanism being at least partially mounted on the frame, the front wheel and the rear wheel being connected to the main frame via the suspension mechanism; a battery assembly, the battery assembly being at least partially mounted on the frame; and a body panel, the body panel being at least partially covering the battery assembly; wherein, the main frame includes a main beam tube and a support plate, the main beam tube being distributed substantially along the length direction of the electric two-wheeled vehicle, the main beam tube being recessed downward in the middle to form a recessed portion; the support plate is disposed in the recessed portion, the support plate extending along the width direction of the electric two-wheeled vehicle with a width L1, the distance from the axle center of the front wheel to the axle center of the rear wheel being set as L2, and the ratio of L1 to L2 being greater than or equal to 0.1 and less than or equal to 0.4.

[0007] Furthermore, the ratio of L1 to L2 is greater than or equal to 0.15 and less than or equal to 0.35.

[0008] Furthermore, the ratio of L1 to L2 is greater than or equal to 0.2 and less than or equal to 0.3.

[0009] Furthermore, the frame also includes support vertical tubes, which include 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 are distributed in a basically vertical direction and surround each other to form an accommodating space, in which the battery assembly is at least partially disposed.

[0010] Furthermore, along the length of the electric two-wheeled vehicle, the first support vertical tube is installed on the main beam tube, and the second and third support vertical tubes are installed on the main beam tube and located behind the first support vertical tube.

[0011] Furthermore, the support riser includes a first support riser, and the main frame also includes a reinforcing assembly, which includes a first reinforcing member, which is at least partially connected to the first support riser and the main beam tube.

[0012] Furthermore, the support riser also includes a second support riser and a third support riser. A plane perpendicular to the width direction of the electric two-wheeler is defined as the longitudinal plane. The second support riser and the third support riser are basically symmetrical about the longitudinal plane.

[0013] Furthermore, the frame also includes a subframe, and the support vertical tubes include a first support vertical tube, a second support vertical tube, and a third support vertical tube. The subframe is disposed at the upper end of the support vertical tubes and is connected to the first support vertical tube, the second support vertical tube, and the third support vertical tube respectively.

[0014] Furthermore, a plane perpendicular to the height direction of the electric two-wheeler is defined as the transverse plane. The subframe has a projection area on the transverse plane along the height direction, and the projection area is basically a "U" shape with the opening facing backward.

[0015] Furthermore, the subframe includes a first fixing part and a second fixing part. The first fixing part is connected to the first support vertical tube, and the second fixing part is connected to the second support vertical tube and the third support vertical tube. The first fixing part is configured as a plate, and the second fixing part is configured as a tube.

[0016] The main frame of the electric two-wheeler provided in this application is equipped with a main beam tube and a support plate. The main beam tube extends along the length of the electric two-wheeler, and the support plate extends along the width of the electric two-wheeler. The support plate is mounted on the main beam tube to meet the driver's foot placement requirements. The main beam tube is a single tube. With this configuration, the frame has high strength and is lightweight. Attached Figure Description

[0017] Figure 1 This is a perspective view of the electric two-wheeler of this application;

[0018] Figure 2 This is a schematic diagram of the connection between the vehicle frame and the suspension mechanism in this application;

[0019] Figure 3 This is a structural schematic diagram of the main frame of this application;

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

[0021] Figure 5 This application is Figure 2 Enlarged structural diagram at point A;

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

[0023] Figure 7 This is a schematic diagram of the connection between the rear swingarm and the rear wheel in this application;

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

[0025] Figure 9 This is a three-dimensional structural diagram of the cushion device of this application;

[0026] Figure 10 This application is Figure 9 Enlarged structural diagram at point B;

[0027] Figure 11 This is a schematic diagram of the seat lock assembly of this application on an electric two-wheeler;

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

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

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

[0031] Figure 15 This is a three-dimensional structural diagram of the rear wheel of this application. Detailed Implementation

[0032] To enable those skilled in the art to better understand the present application, the technical solutions in specific embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. It should be understood that those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

[0033] like 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, rear, top, bottom, left, and right sides are shown. The front-to-back direction is the length direction of the electric two-wheeled vehicle 100, the left-to-right direction is the width direction of the electric two-wheeled vehicle 100, and the up-down direction is the height direction of the electric two-wheeled vehicle 100.

[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 implementation, 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 one implementation, the number of support plates 1114 can be set to two. It is understood that the number of support plates 1114 can also be other reasonable numbers, such as one or three, as long as the strength is sufficient to support the driver's feet during riding. The walking mechanism 13 includes a front wheel 131 and a rear wheel 132 disposed below the frame 11, with the front wheel 131 serving as the steering wheel of the electric two-wheeled vehicle 100 and the rear wheel serving as the drive 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 a 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 within a preset range. More specifically, the ratio of L1 to L2 is greater than or equal to 0.1 and less than or equal to 0.4. As an alternative implementation, 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 another alternative implementation, 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 configuration, the ratio of L1 to L2 is within a suitable range, providing a suitable width for the driver to place their feet while minimizing the width of the support plate 1114 to achieve lightweighting. It is understood that if the ratio of L1 to L2 is set greater than this range, the support plate 1114 becomes too wide, which is detrimental to lightweighting; if the ratio of L1 to L2 is set less than this range, the driver cannot comfortably place their feet, which is not conducive to riding. It is understood that the ratio of L1 to L2 can be 0.12, 0.15, 0.25, etc.

[0036] As an optional implementation, taking the plane perpendicular to the vertical direction as the second plane, the projection of the subframe 112 along the vertical direction onto the second plane is basically a rearward-opening "U" shape. The subframe 112 includes a first fixing part 1121 and a second fixing part 1122. A first support vertical tube 1112a is disposed on the first fixing part 1121, and the second support vertical tube 1112b and the third support vertical tube 1112c are both disposed on the second fixing part 1122. As an optional implementation, the first fixing part 1121 is a plate, and the second fixing part 1122 is a tube. In this configuration, the connection strength of the subframe 112 is satisfied while providing more accommodating space. At the same time, the "U"-shaped subframe 112 allows for appropriate adjustment of the shape of the seat cushion device 14 by adjusting the structure of the upper part of the mechanism, thus better supporting the seat cushion device 14.

[0037] like 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] In one optional implementation, the upper part of the mounting plate 1133 is disposed on the support horizontal tube 1115, and there is a mounting point on each of the left and right sides of the support horizontal tube 1115. The lower part of the mounting plate 1133 is connected to the second support vertical tube 1112b and the third support vertical tube 1112c. The upper support frame 1131 is disposed on the upper part of the mounting plate 1133, and the lower support frame 1132 is disposed on the lower part of the mounting plate 1133. The upper support frame 1131 extends in the rear-lower direction along the electric two-wheeler 100, and the lower support frame 1132 extends in the rear-upper direction along the electric two-wheeler 100. The left and right sides of the upper support frame 1131 are each bent downward to form two first bending portions 1131a. 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-rear direction is designated as the third plane. The projection of the two first bending portions 1131a in the front-rear direction onto the third plane is a figure-eight shape. The lower support frame 1132 has two upwardly bent portions 1132a on each side, and the lower support frame 1132 is fixedly connected to the mounting plate 1133 through the two second bent portions 1132a. In this configuration, the upper support frame 1131 and the lower support frame 1132 are fixedly connected to the mounting plate 1133 through the first bent portions 1131a and the second bent portions 1132a, and the weight borne by the support frame assembly 113 can be evenly distributed on the mounting plate 1133, thereby increasing the load-bearing capacity.

[0040] As an optional implementation, the projection of the mounting point of the upper support frame 1131 on the mounting plate 1133 along the left-right direction onto the first plane is projection point a; the projection of the mounting point of the lower support frame 1132 on the mounting plate 1133 along the left-right direction onto the first plane is projection point b; and the projection of the connection point between the upper support frame 1131 and the lower support frame 1132 along the left-right direction onto the first plane is projection point c. Projection points a, b, and c form a triangle, that is, the support frame 1131 and the lower support frame 1132 form a stable triangular structure. With this arrangement, the structure of the support frame assembly 113 is more stable. The distance between projection points a and b is the installation spacing D, and the angle where projection point c is located is the projection angle α. Specifically, the projection angle α is set within a certain range; 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 implementation, 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 greater than or equal to 60° and less than or equal to 80°. In this setting, the projection angle α is within a suitable range, providing appropriate strength while minimizing the length of the support frame assembly 113 to achieve weight reduction. It is understood that if the projection angle α is set greater than this range, the length of the support frame assembly 113 will be too small to meet installation requirements; if the projection angle α is set less than this range, the length of the support frame assembly 113 will be too long, which is detrimental to weight reduction and makes it prone to wobbling, potentially affecting installation strength. It is understood that the projection angle α can be set to 25°, 30°, 55°, 70°, etc.

[0041] Specifically, the installation spacing D is set within a certain range. More specifically, the installation spacing D can be set to greater than or equal to 40cm and less than or equal to 350cm. As an optional implementation, the installation spacing D can also be set to greater than or equal to 80cm and less than or equal to 300cm. As another optional implementation, the installation spacing D can also be set to greater than or equal to 150cm and less than or equal to 250cm. With this setting, the installation spacing D is within a suitable range, providing appropriate strength while minimizing the length of the support frame assembly 113 to achieve lightweighting. It is understood that if the installation spacing D is set greater than this range, the length of the support frame assembly 113 will be too small to meet installation requirements; if the ratio of the projection angle α is set less than this range, the length of the support frame assembly 113 will be too long, which is detrimental to lightweighting and may affect the installation strength. It is understood that the installation spacing D can be set to 100cm, 180cm, 200cm, 280cm, etc.

[0042] like Figure 2 , Figure 7As shown, in one implementation, the suspension mechanism 12 includes a rear swingarm 121, and the rear wheel 132 is connected to the frame 11 via the rear swingarm 121. Further, one end of the rear swingarm 121 is rotatably connected to the main frame 111, and the other end of the rear swingarm 121 is disposed on the rear wheel axle 1321. The suspension mechanism 12 also includes a connector 122, which is at least partially disposed on the rear wheel 132. The rear swingarm 121 itself forms an internal space, and the connector 122 is at least partially disposed within this internal space and abuts against the rear swingarm 121. On a first plane perpendicular to the left-right direction, the projection of the connector 122 along the left-right direction onto the first plane is a first projection area, and the projection of the rear swingarm 121 along the left-right direction onto the first plane is a second projection area; the first projection substantially overlaps with the second projection. The rear wheel 132 includes a rear wheel axle 1321, which passes through the connector 122 and the rear swingarm 121 along the left-right direction. Specifically, the two ends of the rear wheel axle 1321 are elliptical in shape, and the connecting piece 122 has mounting holes of corresponding shape. It is understood that the two ends of the rear wheel axle 1321 can also be square, rectangular, or other non-circular shapes, with corresponding mounting holes on the connecting piece 122. The rear wheel axle 1321 is limited by the connecting piece 122 and will not rotate with the rear wheel 132. In this configuration, the rear swingarm 121 is connected to the rear wheel axle 1321 via the connecting piece 122. The connecting piece 122 is made of metal, and torque is absorbed by it, thus dispersing stress at the connection between the rear swingarm 121 and the rear wheel axle 1321. The rear swingarm 121 is less prone to deformation and wear, and the material selection for the rear swingarm 121 is more flexible, resulting in a lighter weight.

[0043] In one optional implementation, the rear wheel axle 1321 passes through the connector 122 and the rear swingarm 121, and the connector 122 is fixed to the rear swingarm 121 by bolts. The connector 122 has a first mounting portion 1221 and a second mounting portion 1222. The first mounting portion 1221 has a mounting hole for connecting the connector 122 to the rear wheel axle 1321. The inner contour of this mounting hole corresponds to the shape of the cross-section at both ends of the rear wheel axle 1321. The connector 122 abuts against the rear wheel axle 1321 to prevent rotation of the rear wheel axle 1321. The second mounting portion 1222 has two mounting holes for connecting the connector 122 to the rear swingarm 121. It is understood that the number of mounting holes in the second mounting portion 1222 can be set to 1, 3, 4, or other reasonable numbers, as long as the fixing requirements are met. Corresponding to the second mounting part 1222, a corresponding number of mounting positions are provided on the rear swingarm 121. Each mounting hole aligns with a mounting point on the rear swingarm 121. The mounting positions are all located on one side of the mounting hole, and bolts are used to fix the mounting hole and mounting position together, thereby securing the rear swingarm 121 to the connector 122. Specifically, the bolts are positioned along the left-right direction, with the bolt axis essentially parallel to the axis of the rear wheel axle 1231. In this case, the mounting holes of the first mounting part 1221 and the second mounting part 1222 form a triangle, resulting in a more stable connection. It can be understood that the bolts can also be positioned vertically, with the bolt axis essentially perpendicular to the axis of the rear wheel axle 1231. The rear swingarm 121 also includes a wiring part 1211, which has several limiting holes for regulating the wiring at the rear of the electric two-wheeled vehicle 100.

[0044] like Figure 2 , Figure 8As shown, the suspension mechanism 12 also includes a shock absorber 123, which is located behind the seat assembly 14. The shock absorber 123 extends vertically, with one end connected to the rear swingarm 121 and the other end connected to the frame 11. One end of the rear swingarm 121 is connected to the frame 11, and the other end is connected to the rear wheel 132. A mounting portion 1212 is also provided at the upper end of the rear swingarm 121, through which one end of the shock absorber 123 is connected to the rear swingarm 121. The frame 11 also includes a connecting bracket 114, through which the other end of the shock absorber 123 is connected to the frame 11. Specifically, the connecting bracket 114 is mounted on the supporting horizontal tube 1115 and extends forward of the vehicle. The connecting bracket 114 is positioned within the receiving 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 positioned within this receiving space. With this arrangement, the shock absorber 123 is essentially hidden, resulting in a more aesthetically pleasing appearance; it also saves space without compromising performance. Furthermore, the number of shock absorbers 123 can be set to a single unit. 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°. With this arrangement, the shock absorber 123 ensures effective damping while also saving space.

[0045] As an optional implementation, the shock absorber 123 includes a first connecting end 1231 and a second connecting end 1232. The first connecting end 1231 is disposed on the connecting bracket 114, and the second connecting end 1232 is disposed on the mounting part 1212 and connected to the rear wheel 132 via the rear horizontal fork 121. The projection of the first connecting end 1231 onto the second plane in the vertical direction is the first projection point, and the projection of the axle center of the front wheel 131 onto the second plane in the vertical direction is the second projection point. The distance between the first projection point and the second projection point is the projection length D1. The projection of the second connecting end 1232 onto the second plane in the vertical direction is the third projection point, and the projection of the leftmost point of the outer edge of the rear wheel 132 onto the second plane in the vertical direction is the fourth projection point. The distance between the third projection point and the fourth projection point is the projection length D2. The projection point of the first connecting end 1231 onto the second plane in the vertical direction is located in front of the projection point of the second connecting end 1232 onto the second plane in the vertical direction. Specifically, the ratio of projected length D1 to projected length D2 can be greater than or equal to 62 and less than or equal to 123; as an optional implementation, the ratio of projected length D1 to projected length D2 can be greater than or equal to 80 and less than or equal to 110. As another optional implementation, the ratio of projected length D1 to projected length D2 can be greater than or equal to 90 and less than or equal to 100. In this configuration, the ratio of projected length D1 to projected length D2 is within a suitable range, which satisfies the vibration reduction requirements while saving space as much as possible. Understandably, if the ratio of projected length D1 to projected length D2 is set to a value greater than this range, the tilt angle of the shock absorber 123 will be too small or the length of the shock absorber 123 will be too short, failing to meet the damping requirements and affecting the driver's experience. If the ratio of projected length D1 to projected length D2 is set to a value less than this range, the shock absorber 123 will tilt too much into the 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 will be too long, occupying too much space and failing to meet the arrangement requirements. Understandably, the ratio of projected length D1 to projected length D2 can be 75, 85, 96, etc.

[0046] like Figure 3 , Figure 9As shown, the seat cushion assembly 14 includes a seat cushion 141, a seat bucket 142, and a mounting assembly 143. The seat bucket 142 is disposed below the seat cushion assembly 14, and the battery assembly 17 is disposed in the seat bucket 142. The seat cushion 141 and the seat bucket 142 are rotatably connected by the mounting assembly 143. The seat cushion 141 includes a first support surface for the driver to sit on and a second support surface near the seat bucket 142. Both the first and second support surfaces are arc-shaped. The mounting assembly 143 is disposed on the second support surface. The frame 11 also includes a battery mounting bracket 115, which at least partially connects 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 bracket 115 is provided with a platform portion 1151 for placing the seat bucket 142. The battery mounting bracket 115, along with the lines connecting the mounting positions of the first support vertical tube 1112a, the second support vertical tube 1112b, and the third support vertical tube 1112c, forms a triangle, providing greater stability. Furthermore, the accommodating space formed by the first support vertical tube 1112a, the second support vertical tube 1112b, and the third support vertical tube 1112c provides stronger protection for the battery assembly 17.

[0047] In one optional implementation, 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. The first mounting portion 1431a is connected to the seat cushion 141, and the first connecting portion 1431b is connected to the pin 1433. The second mounting plate 1432 includes a second mounting portion (not shown) and a second connecting portion (not shown). The second mounting portion is connected to the seat cushion 142, and the second connecting portion is connected to the pin 1433. The seat cushion 141 includes a protrusion 1411, which is located on the second support surface and integrally formed with the seat cushion 141. The protrusion 1411 can prevent 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 bucket 142 by bolts. The first mounting portion 1431a and the second mounting portion are each provided with multiple mounting holes for connection. The inner contour of these mounting holes corresponds to the inner contour and number of mounting holes provided on the seat cushion 141 and the seat bucket 142. The first connecting portion 1431b and the second connecting portion are fixed by a pin 1433, realizing a rotatable connection between the seat cushion 141 and the seat bucket 142. The pin 1433 includes a pin head 1433a, and a protrusion 1411 is configured to abut against the assembled pin head 1433a. During assembly, the first mounting plate 1431 and the second mounting plate 1432 are first connected by the pin. Next, the first mounting plate 1431 and the seat 142 are connected by bolts, and finally the second mounting plate 1432 and the seat cushion 141 are connected by bolts. After assembly, the protrusion 1411 abuts against the pin head 1433a, preventing the axial movement of the pin 1433. This configuration allows the protrusion 1411 to prevent the pin 1433 from disengaging without the need for nuts or cotter pins.

[0048] like Figure 9 As shown, the seat device 14 also includes a seat lock assembly 144, which is used to lock the seat 141, so that the seat 141 and the seat bucket 142 form a relatively enclosed space. Specifically, the seat lock assembly 144 includes a switch 1441, a locking member 1442, and a seat cable 1443. The seat 141 has a first state locked to the frame 11 and a second state unlocked from the frame 11. The locking member 1442 is fixed to the frame 11, and the seat 141 is connected to the frame 11 through the locking member 1442, so that the seat 141 is held in the first state. One end of the seat cable 1443 is connected to the locking member 1442, and the other end of the seat cable 1443 is connected to the switch 1441. The locking member 1442 can respond to the triggering of the switch 1441 to disconnect the connection between the seat 141 and the locking member 1442, so that the seat 141 switches from the first state to the second state. The switch 1441 is located at the front of the electric two-wheeler 100 for easy operation by the driver.

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

[0050] Specifically, when the pull cable 1443c extends, the distance between the pull cable head and the end of the second protective layer 1443b is greater than or equal to a fixed distance, and the locking member 1442 locks. When the pull cable 1443c retracts into the second protective layer 1443b, the distance between the pull cable head and the end of the second protective layer 1443b is less than or equal to the unlocking distance, and the locking member 1442 unlocks. The fixed distance is greater than the unlocking distance. When the driver locks using the switch 1441, the pull cable 1443c extends, and the pull cable head extends beyond the fixed distance of the second protective layer 1443b. When the driver unlocks using the switch 1441, the pull cable 1443c tightens, and the length of the pull cable 1443c extending beyond the second protective layer 1443b decreases. When the distance of the pull cable 1443c extending beyond the second protective layer 1443b is less than the unlocking distance, the seat lock assembly 144 disengages. In this unlocking method, when the seat cable 1443 is bent by external force, such as by hand, the second protective layer 1443b will not lengthen. 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 will still be less than or equal to its initial length; that is, the length of the cable 1443c extending beyond the second protective layer 1443b will not decrease. At this time, without using the switch 1441, the portion of the cable 1443c extending beyond the second protective layer 1443b will not be less than the unlocking distance. Therefore, with this setting, even if an exposed portion of the seat cable 1443 is bent by external force, it will not unlock, improving the security of the seat lock assembly 1444 and reducing the requirements for the placement of the seat cable 1443.

[0051] like Figure 12 , 13As shown, the lighting mechanism 16 includes a front lighting assembly 161 and a rear lighting assembly 162. The front lighting assembly 161 is located at the front of the electric two-wheeler 100, and integrates the functions of position lights and left and right turn signals located on the left and right sides. In common electric two-wheelers, the front lighting assembly 161 has the left and right turn signals separately located on both sides. This results in lower integration of the vehicle's front lights and more complex wiring. Furthermore, having the left and right turn signals separately on both sides makes them more susceptible to damage from impacts, leading to a shorter lifespan and requiring frequent replacements, increasing operating costs. With this arrangement, the front lighting assembly 161 is more compact, has higher space utilization, and is less 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). The electric two-wheeled vehicle 100 is substantially symmetrical about a first plane perpendicular to the left-right direction. The front lighting assembly 161 extends along the left-right direction of the electric two-wheeled vehicle. The first lighting area 1611 is located in the middle of the front lighting assembly 161, and the second lighting area 1612 and the third lighting area 1613 are respectively located at both ends of the front lighting assembly 161. 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 equipped with position lights, and the second lighting area 1612 and the third lighting area 1623 are both equipped with position lights and turn signals. The electric two-wheeler 100 includes a normal driving state and a turning state. When the electric two-wheeler 100 is in the normal driving state, the lights of the front lighting assembly 161 are off; when the electric two-wheeler 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 on; when the electric two-wheeler 100 is in the turning state, the position lights of the first lighting area 1611 are on, and the turn signals of the second lighting area 1612 or the third lighting area 1623 are on. In the second lighting area 1612 or the third lighting area 1613, the position lights and turn signals share the same lighting area. The light emission form of both the position lights and turn signals is that the light is first reflected by the reflector bowl as the source light, and then the light is emitted through the light distribution pattern of the thick-walled component. The light of the position lights and turn signals is reflected and transmitted through different parts of the same reflector bowl and thick-walled component, realizing two optical functions in the same area.

[0054] As an optional implementation, the front lighting assembly 161 also includes an operating element 1614. The control module includes a control unit and an output unit. The operating element 1614 is capable of transmitting control commands to the control unit in response to external forces. The control unit is capable of determining the indication result for the first lighting area 1611, the second lighting area 1612, and the third lighting area 1613 based on the control commands from the buttons. The indication result can instruct the output unit to control the different lighting of 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 element via a cable. When the driver operates the operating element 1614, the control unit can receive commands transmitted by the operating element and determine the driver's indication result for the first lighting area 1611, the second lighting area 1612, and the third lighting area 1613 based on the commands. The operating element 1614 can be configured as a button. The button responds to the force applied by the driver through contact, pressing, or other means to generate a control command and transmit the command to the control unit. Based on the command, the control unit determines the driver's instruction result for the first lighting area 1611, the second lighting area 1612, and the third lighting area 1613. For example, it may be an instruction such as "the first lighting area 1611 is switched to the position light", "the second lighting area 1612 is switched to the turn signal", "the second lighting area 1612 is switched to the position light", "the third lighting area 1613 is switched to the turn signal", or "the third lighting area 1613 is switched to the position light".

[0055] As an optional implementation, the projected area of ​​the first illumination area 1611 on the third plane along the front-rear direction is S1, and the projected area of ​​the front illumination component 161 on the third plane along the front-rear 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. In this configuration, the ratio of S1 to S2 is within a suitable range, which can both display vehicle signals and meet lighting requirements, and also limit the size of the front illumination component 161 as much as possible to achieve weight reduction. Understandably, when the ratio of S1 to S2 is set greater than this range, the area of ​​the second lighting area 1612 or the third lighting area 1613 is too small, and the left and right turn signals are too small to clearly display vehicle signals; when the ratio of S1 to S2 is set less than this range, the first lighting area 1611 is too small, and the illumination intensity of the position lights is insufficient. Understandably, S1 and S2 can be 0.22, 0.28, 0.34, 0.42, etc.

[0056] like Figure 12 , Figure 13 As shown, the rear lighting assembly 162 is located behind the seat bucket 142 and below the seat cushion 141. The seat bucket 142 includes a mounting part 1421, and the rear lighting assembly 162 is bolted to the mounting part 1421. The rear lighting assembly 162 integrates the functions of a position light, a brake light, and a rear turn signal. In common electric two-wheeled vehicles 100, the rear lighting assembly 162 often separates the position light, brake light, and rear turn signal, resulting in lower integration and more complex wiring. The rear lighting assembly 162 includes a first lighting area 1621, a second lighting area 1622, and a third lighting area 1623. The rear lighting assembly 162 extends in the left-right direction, with the first lighting area 1621 located in the middle, and the second lighting area 1622 and the third lighting area 1623 located at its two ends, respectively. The first lighting area 1621 includes a position light and a brake light, with the brightness of the position light being less than that of the brake light. Both the second lighting area 1622 and the third lighting area 1623 are equipped with turn signals. The electric two-wheeler 100 includes normal driving, braking, and turning states. When the electric two-wheeler 100 is in normal driving state, the position light in the first lighting area 1621 is on, and the turn signals in the second lighting area 1622 and the third lighting area 1623 are off; when the electric two-wheeler 100 is braking, the brake light in the first lighting area 1621 is on, and the turn signals in the second lighting area 1622 and the third lighting area 1623 are off; when the electric two-wheeler 100 is turning, the position light in the first lighting area 1621 is on, and the turn signal in the second lighting area 1622 or the third lighting area 1623 is on. In this configuration, the rear lighting assembly 162 integrates multiple lights, resulting in a more compact arrangement and higher space utilization. The position lights and brake lights in this application reflect the light source through a reflector bowl and then pass through the light distribution inner cover to achieve the required brightness of the brake lights; the turn lights refract the light source through a very small thick-walled part to achieve the required turn light spacing.

[0057] In one optional implementation, along the vertical direction, the overlapping area of ​​the projection of the rear lighting assembly 162 onto the second plane and the projection of the seat cushion 141 onto the second plane is S3, and the projected area of ​​the rear lighting assembly 162 onto 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; in another 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; in yet another 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 configuration, the ratio of S3 to S4 is within a suitable range, the rear lighting assembly 162 is compactly arranged, and it can also display vehicle signals. Understandably, when the ratio of S3 to S4 is set greater than this range, the rear lighting component 162 is excessively hidden under the seat cushion 141, failing to meet lighting requirements; when the ratio of S3 to S4 is set less than this range, when viewed vertically along the electric two-wheeler 100, the overlap between the lighting component 162 and the seat cushion 141 is too low, resulting in low space utilization. Understandably, the ratio of S3 to S4 can be 0.55, 0.62, 0.75, etc.

[0058] like Figure 10 , Figure 14 As shown, the rear wheel 132 also includes a tire 1322, a rim 1323, spokes 1324, and a valve stem 1325. The tire 1322 is used to store gas. The valve stem 1325 is disposed on the tire 1322 for inflating and deflating the tire 1322. Specifically, the valve stem 1325 is disposed on the side of the rim 1323 that contacts the spokes 1324, and the valve stem 1325 is inclined away from the running gear 13. Viewed vertically from the electric two-wheeled vehicle 100, the valve stem 1325 substantially overlaps with 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 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 configuration, since the angle between the mounting surface 1323a and the second plane is set within a specific angle range, the valve 1325 is set as a straight line, eliminating the need for bending. This satisfies the convenience of inflation while saving costs.

[0059] As an optional implementation, the electric two-wheeler 100 also includes a braking mechanism (not shown). The braking mechanism is located on one side of the rear wheel 132. To avoid the valve 1325 adversely affecting the setting and installation of the braking mechanism, and to facilitate inflation of the walking mechanism 13, the valve 1325 and the braking mechanism are respectively located on both sides of the rear wheel 132. In 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°. In yet 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°. In this configuration, the angle γ between the mounting surface 1323a and the second plane is set within a suitable range, which satisfies the inflation requirement, minimizes interference with other mechanisms, and achieves an aesthetically pleasing effect. Understandably, when the angle γ between the mounting surface 1323a and the second plane is set to a value greater than this range, the valve stem 1325 is too far from the rim 1323, making it vulnerable to damage and affecting aesthetics. When the angle γ between the mounting surface 1323a and the second plane is set to a value less than this range, the valve stem 1325 is too close to the rim 1323 and spokes 1324, causing interference during inflation and inconvenience. Understandably, the angle γ between the mounting surface 1323a and the second plane can be set to 26°, 32°, 34°, 37°, etc.

[0060] In this application, the main frame 111 of the electric two-wheeler 100 is provided with a main beam tube 1111 and a support plate 1114. The main beam tube 1111 extends along the front-rear direction of the electric two-wheeler, and the support plate 1114 extends along the left-right direction. The width distance between the support plate 1114 and the main beam tube 1111 and the support plate 1114 extending along the left-right direction is L1. The distance from the axle center of the front wheel 131 to the axle center of the rear wheel 132 is set to L2. The ratio of L1 to L2 is set within a certain range. With this configuration, the frame 11 meets the strength requirements while being lighter.

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

Claims

1. An electric two-wheeled vehicle, comprising: The vehicle frame includes a main frame; A walking mechanism, the walking mechanism including a front wheel and a rear wheel, the front wheel and the rear wheel being at least partially mounted on the vehicle frame; A suspension mechanism, at least partially mounted on the vehicle frame, wherein the front wheel and the rear wheel are connected to the main frame via the suspension mechanism; A battery assembly, at least partially disposed on the vehicle frame; A vehicle body panel that at least partially covers the battery assembly; Its features are, The main frame includes a main beam tube and a support plate. The main beam tube is distributed along the length of the electric two-wheeler, and the middle part of the main beam tube is recessed to form a recessed part. The support plate is disposed in the recessed portion, the width of the support plate extending along the width direction of the electric two-wheeled vehicle is L1, the distance from the axle center of the front wheel to the axle center of the rear wheel is set as L2, and the ratio of L1 to L2 is greater than or equal to 0.1 and less than or equal to 0.

4. The frame also includes a support vertical tube, which includes 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 are distributed in a basically vertical direction and surround each other to form a receiving space. The battery assembly is at least partially disposed in the receiving space. Along the length of the electric two-wheeled vehicle, the first support vertical tube is disposed on the main beam tube, and the second and third support vertical tubes are disposed on the main beam tube and located behind the first support vertical tube; The vehicle frame also includes a support frame assembly, which is fixedly connected to the main vehicle frame. The support frame assembly includes a mounting plate, an upper support frame, and a lower support frame. The upper support frame is disposed on the upper part of the mounting plate, and the lower support frame is disposed on the lower part of the mounting plate. Define a plane perpendicular to the width direction of the electric two-wheeler as the longitudinal plane. The projection of the upper support frame and the mounting point on the mounting plate along the left and right direction onto the longitudinal plane is projection point a. The projection of the lower support frame and the mounting point on the mounting plate along the left and right direction onto the longitudinal plane is projection point b. The projection of the connection point between the upper support frame and the lower support frame along the left and right direction onto the longitudinal plane is projection point c. The lines connecting projection points a, b, and c form a triangle. In the triangle formed by the lines connecting projection point a, projection point b, and projection point c, the angle where projection point c is located is the projection angle α, which is set to be greater than or equal to 20° and less than or equal to 120°. The upper support frame is bent downwards on both sides to form two first bends. The upper support frame is fixedly connected to the mounting plate through the two first bends. The plane perpendicular to the front-back direction is the third plane. The projection of the two first bends on the third plane along the front-back direction is a figure-eight shape. The lower support frame is provided with two second bends on both sides, which are bent upwards. The lower support frame is fixedly connected to the mounting plate through the two second bends.

2. The electric two-wheeled vehicle according to claim 1, characterized in that, The ratio of L1 to L2 is greater than or equal to 0.15 and less than or equal to 0.

35.

3. The electric two-wheeled vehicle according to claim 1, characterized in that, The ratio of L1 to L2 is greater than or equal to 0.2 and less than or equal to 0.

3.

4. The electric two-wheeled vehicle according to claim 1, characterized in that, The supporting vertical tube includes a first supporting vertical tube, and the main frame also includes a reinforcing assembly, the reinforcing assembly including a first reinforcing member, the first reinforcing member being at least partially connected to the first supporting vertical tube and the main beam tube.

5. The electric two-wheeled vehicle according to claim 4, characterized in that, The supporting vertical tube also includes a second supporting vertical tube and a third supporting vertical tube. A plane perpendicular to the width direction of the electric two-wheeler is defined as a longitudinal plane. The second supporting vertical tube and the third supporting vertical tube are basically symmetrical about the longitudinal plane.

6. The electric two-wheeled vehicle according to claim 1, characterized in that, The frame also includes a subframe, and the support vertical tube includes a first support vertical tube, a second support vertical tube, and a third support vertical tube. The subframe is disposed at the upper end of the support vertical tube and is connected to the first support vertical tube, the second support vertical tube, and the third support vertical tube, respectively.

7. The electric two-wheeled vehicle according to claim 6, characterized in that, A plane perpendicular to the height direction of the electric two-wheeled vehicle is defined as a transverse plane. The subframe has a projection area on the transverse plane along the height direction. The projection area is basically a "U" shape with the opening facing backward.

8. The electric two-wheeled vehicle according to claim 6, characterized in that, The subframe includes a first fixing part and a second fixing part. The first fixing part is connected to the first support vertical tube, and the second fixing part is connected to the second support vertical tube and the third support vertical tube. The first fixing part is a plate, and the second fixing part is a tube.

Images