electric two-wheeler

Abstract

This application provides an electric two-wheeled vehicle, including a frame, body panels, a suspension system, a running gear system, a power system, and a battery. The frame includes a front frame, a middle frame, and a rear frame distributed along its longitudinal direction. The body panels at least partially cover the frame. The suspension system includes a front suspension and a rear suspension. The running gear system includes front wheels and rear wheels. The power system is supported by the frame and provides power to the running gear system. The battery is electrically connected to the power system. The rear frame includes a rear frame tube. The rear frame tube has a first connecting portion and a second connecting portion. The first and second connecting portions are arranged along the vertical direction of the frame. The frame also includes a seat frame. The seat frame is connected to the first connecting portion and also to the second connecting portion. The seat frame can be connected to the first and second connecting portions in at least two orientations perpendicular to the vertical direction of the frame. The electric two-wheeled vehicle provided by this application has a frame that can accommodate seat cushions in different mounting positions.

Description

Technical Field

[0001] This application relates to the field of two-wheeled vehicle technology, and more specifically, to an electric two-wheeled vehicle. Background Technology

[0002] Different models and sizes of electric two-wheelers typically have different seat positions; for example, electric motorcycles usually have larger or more rearward-positioned seats than electric bicycles. In related technologies, different frames are needed to support these different seat positions. Producing electric two-wheelers with different seat positions requires multiple production lines, leading to increased production costs. Summary of the Invention

[0003] In view of this, this application provides an electric two-wheeled vehicle whose frame can be adapted to seat cushions in different mounting positions.

[0004] One embodiment of this application provides an electric two-wheeled vehicle. The electric two-wheeled vehicle includes a frame, body panels, a suspension system, a running gear system, a power system, and a battery. The frame includes a front frame, a middle frame, and a rear frame arranged sequentially in a longitudinal direction. The body panels at least partially cover the frame. The suspension system includes a front suspension and a rear suspension. The running gear system includes front wheels and rear wheels. The front wheels are connected to the front frame via the front suspension. The rear wheels are connected to the rear frame via the rear suspension. The power system is supported by the middle frame and / or the rear frame and provides power to the running gear system. The battery is supported by the middle frame and electrically connected to the power system. The rear frame includes a rear frame tube. The rear frame tube has a first connecting portion and a second connecting portion. The first and second connecting portions are arranged in the vertical direction of the frame. The frame also includes a seat frame. The seat frame is connected to the first connecting portion and also to the second connecting portion. The seat frame can be connected to the first and second connecting portions in at least two orientations perpendicular to the vertical direction of the frame.

[0005] In some embodiments of this application, the seat frame has a first position and a second position relative to the rear frame. A horizontal plane perpendicular to the vertical direction of the frame is defined as a projection reference plane. The orthographic projection of the seat frame onto the projection reference plane along the vertical direction of the frame when in the first position is defined as the first projection. The orthographic projection of the seat frame onto the projection reference plane along the vertical direction of the frame when in the second position is defined as the second projection. Along the longitudinal direction of the frame, the first projection is located directly in front of the second projection.

[0006] In some embodiments of this application, the rear suspension includes a shock absorber and a rear swingarm. The rear swingarm is rotatably connected to the rear frame. The lower end of the shock absorber is rotatably connected to the rear swingarm. The upper end of the shock absorber is rotatably connected to a second connecting portion. The upper end of the shock absorber is located in front of the lower end of the shock absorber.

[0007] In some embodiments of this application, the seat frame includes a carrier and a support rod. The carrier is connected to a first connecting portion. One end of the support rod is connected to a second connecting portion, and the other end of the support rod is fixed to the carrier. When the seat frame is in a first position, the angle between the centerline of the support rod and the centerline of the shock absorber ranges from 135° to 180°.

[0008] In some embodiments of this application, the rear frame tube includes a first tube segment and a second tube segment. A first connecting portion is located above the second connecting portion. The first connecting portion is disposed on the first tube segment. The second connecting portion is disposed on the second tube segment or at the junction of the first and second tube segments. The centerline of the first tube segment intersects the centerline of the second tube segment, forming a prominent angle area and a minor angle area at the junction of the first and second tube segments. The angle between the centerline of the first tube segment and the centerline of the second tube segment in the prominent angle area is greater than the angle in the minor angle area. The seat frame includes a load-bearing member and a support rod. The load-bearing member is connected to the first connecting portion. One end of the support rod is connected to the second connecting portion, and the other end of the support rod is fixed to the load-bearing member. When the seat frame is in the second position, the support rod is located on the side where the prominent angle area is located, and the angle between the centerline of the support rod and the centerline of the second tube segment ranges from 135° to 180°.

[0009] In some embodiments of this application, the second connecting portion has a side mounting surface. The side mounting surface is perpendicular to the left-right direction of the vehicle frame. The seat frame is connected to the side mounting surface.

[0010] In some embodiments of this application, the first connecting portion is provided with an upper mounting surface. The upper mounting surface is perpendicular to the vertical direction of the vehicle frame. The seat frame is connected to the upper mounting surface.

[0011] In some embodiments of this application, the rear frame further includes a limiting member. The limiting member is disposed at the first connecting portion. The upper end of the limiting member is higher than the upper mounting surface. One end of the seat frame connected to the first connecting portion abuts against one side of the limiting member in the left-right direction along the frame.

[0012] In some embodiments of this application, the seat frame includes a carrier and a support rod. The carrier is capable of assembling at least a seat cushion. The carrier is connected to a first connecting portion. One end of the support rod is connected to a second connecting portion, and the other end of the support rod is fixed to the carrier. The upper surface of the carrier is horizontally oriented. The extension direction of the support rod is neither parallel nor perpendicular to any horizontal plane.

[0013] In some embodiments of this application, the rear frame includes two rear frame tubes. The two rear frame tubes are arranged along the left-right direction of the frame. The seat frame has four connecting ends, divided into two groups. Each group of connecting ends corresponds to one rear frame tube and is connected to the first connecting part and the second connecting part of the corresponding rear frame tube.

[0014] In this application, by changing the orientation of the connection to the first and second connecting parts, the relative position of the seat frame in the front-to-back and left-to-right directions of the frame can be adjusted, thereby facilitating the placement of structures such as the seat cushion in different positions on the frame. When the frame is used to assemble large electric two-wheelers, such as electric motorcycles, the seat frame can be positioned rearward to allow the seat cushion to be positioned further back, thus meeting the riding requirements of large electric two-wheelers. When the frame is used to assemble small electric two-wheelers, such as electric bicycles, the seat frame can be positioned forward to allow the seat cushion to be positioned further forward, thus meeting the riding requirements of small electric two-wheelers. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings in the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation on the scope.

[0016] Figure 1 This is a schematic diagram of the structure of an electric two-wheeled vehicle provided in an embodiment of this application; Figure 2 for Figure 1 A structural schematic diagram of a Chinese electric two-wheeler from another perspective; Figure 3 This is a schematic diagram of the structure of a vehicle tail rack in a first position according to an embodiment of this application; Figure 4 A schematic diagram of the structure of a vehicle tail rack in the second position according to an embodiment of this application; Figure 5 This is a schematic diagram of a vehicle tail rack in a first position and another vehicle tail rack in a second position, according to an embodiment of this application. Detailed Implementation

[0017] The technical solutions of the embodiments of this application will be described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.

[0018] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

[0019] The terms “first”, “second”, etc., are used for descriptive purposes only and should not be interpreted as indicating or implying relative importance.

[0020] The following detailed description of some embodiments of this application is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0021] See Figures 1 to 3 One embodiment of this application provides an electric two-wheeled vehicle 100. The electric two-wheeled vehicle 100 includes a frame 10, a body panel 20, a suspension system 30, a running system 40, a power system (not shown), and a battery 50.

[0022] To clearly illustrate the technical solution of this application, the following are also defined: Figures 1 to 5 The directions shown are front, back, left, right, up, and down. In this application, the length direction of the frame 10 of the electric two-wheeled vehicle 100 refers to... Figures 1 to 5 In the fore-and-aft direction, the width direction of the frame 10 of the electric two-wheeled vehicle 100 refers to... Figures 1 to 5 In the left-right direction, the height direction of the frame 10 of the electric two-wheeled vehicle 100 refers to... Figures 1 to 5 In the diagram, the horizontal plane refers to the plane perpendicular to the vertical direction, and the vertical plane refers to the plane perpendicular to the horizontal plane. The front, back, left, right, up, and down directions in the diagram are based on the electric two-wheeler 100 traveling on a level road, not on a sloping road.

[0023] See Figure 1 and Figure 3 In some embodiments, the frame 10 includes a front frame 11, a mid-frame 14, and a rear frame 12, which are sequentially distributed along its longitudinal direction. A body panel 20 at least partially covers the frame 10. The suspension system 30 includes a front suspension 31 and a rear suspension 32. The running gear 40 includes a front wheel 41 and a rear wheel 42. The front wheel 41 is connected to the front frame 11 via the front suspension 31. The rear wheel 42 is connected to the rear frame 12 via the rear suspension 32. The powertrain is supported by the mid-frame 14 and / or the rear frame 12 and provides power to the running gear 40. The battery 50 is supported by the mid-frame 14 and is electrically connected to the powertrain.

[0024] See Figure 3 In some embodiments, the rear suspension 32 includes a shock absorber 321 and a rear swingarm 322. The rear swingarm 322 is rotatably connected to the rear frame 12. The lower end of the shock absorber 321 is rotatably connected to the rear swingarm 322. The upper end of the shock absorber 321 is rotatably connected to the rear frame 12. The upper end of the shock absorber 321 is located in front of the lower end of the shock absorber 321.

[0025] See Figure 3 and Figure 4In some embodiments, the rear frame 12 includes a rear frame tube 121. The rear frame tube 121 has a first connecting portion 1211 and a second connecting portion 1212. The first connecting portion 1211 and the second connecting portion 1212 are arranged along the vertical direction of the frame 10. The frame 10 also includes a seat frame 13. The seat frame 13 is connected to the first connecting portion 1211 and the second connecting portion 1212. The seat frame 13 can be connected to the first connecting portion 1211 and the second connecting portion 1212 in at least two orientations perpendicular to the vertical direction of the frame 10.

[0026] By changing the orientation of the seat frame 13 connected to the first connecting part 1211 and the second connecting part 1212, the relative position of the seat frame 13 in the front-rear direction and the left-right direction of the frame 10 can be adjusted, thereby facilitating the placement of structures such as the seat cushion 60 at different positions on the frame 10. When the frame 10 is used to assemble a large electric two-wheeler 100, such as an electric motorcycle, the seat frame 13 can be positioned rearward so that the seat cushion 60 can be positioned further back, thus meeting the riding requirements of the large electric two-wheeler 100. When the frame 10 is used to assemble a small electric two-wheeler 100, such as an electric bicycle, the seat frame 13 can be positioned forward so that the seat cushion 60 can be positioned further forward, thus meeting the riding requirements of the small electric two-wheeler 100.

[0027] The seat frame 13 can be used to assemble the seat cushion 60, as well as the rear box (not shown) or some body panels 20 (not shown), etc.

[0028] In some embodiments, the upper end of the shock absorber 321 is rotatably connected to the second connecting portion 1212. The shock absorber 321 and the seat frame 13 share the second connecting portion 1212 to connect to the rear seat body, which helps to reduce the number of connection nodes and improve space utilization.

[0029] In some embodiments, the rear support tube 121 includes a first tube segment 1213 and a second tube segment 1214. The first tube segment 1213 is located above the second tube segment 1214. The first tube segment 1213 and the second tube segment 1214 can be integrally formed to improve structural strength; alternatively, they can be separate structures. A first connecting portion 1211 is located above the second connecting portion 1212. The first connecting portion 1211 is disposed on the first tube segment 1213. The second connecting portion 1212 is disposed on or near the junction of the second tube segment 1214, the first tube segment 1213, and the second tube segment 1214.

[0030] The centerline of the first tube segment 1213 intersects the centerline of the second tube segment 1214, forming a large-angle area and a small-angle area at the junction of the first tube segment 1213 and the second tube segment 1214. The angle between the centerline of the first tube segment 1213 and the centerline of the second tube segment 1214 in the large-angle area is greater than the angle in the small-angle area. On the one hand, it can be tilted upward to facilitate the rear frame tube 121 to extend rearward to increase the length of the frame 10, providing space for the assembly of structures such as the rear suspension 32 and the rear running wheel 42; on the other hand, it can extend upward to provide support for the seat frame 13, so that the seat frame 13 remains stable when carrying users or goods.

[0031] Understandably, in some embodiments, the second connecting portion 1212 is located near the junction of the second pipe segment 1214 and the first pipe segment 1213, so that the second connecting portion 1212 and the first connecting portion 1211 are arranged in the vertical direction of the frame 10.

[0032] Understandably, in some embodiments, the first tube segment 1213 is arranged substantially along the vertical direction of the frame 10. The upper end of the second tube segment 1214 is located behind the lower end of the second tube segment 1214. The opening of the inferior angle region corresponding to the included angle is arranged facing forward and upward.

[0033] See Figure 5 In some embodiments, the seat frame 13 has a first position and a second position relative to the rear frame 12. A horizontal plane perpendicular to the vertical direction of the frame 10 is defined as the projection reference plane S. The orthographic projection of the seat frame 13 onto the projection reference plane S along the vertical direction of the frame 10 when in the first position is defined as the first projection 13a. The orthographic projection of the seat frame 13 onto the projection reference plane S along the vertical direction of the frame 10 when in the second position is defined as the second projection 13b. Along the longitudinal direction of the frame 10, the first projection 13a is located directly in front of the second projection 13b. Figure 3 With the seat frame 13 in the first position relative to the rear frame 12, Figure 4 The seat frame 13 is in the second position relative to the rear frame 12.

[0034] The seat frame 13, positioned further forward in the first position than in the second position, allows for a more forward placement of structures such as the seat cushion 60. It also reduces the rearward length occupied by the seat frame 13 relative to the overall frame 10, thus shortening the overall length of the frame 10 in the longitudinal direction to meet the riding requirements of the small electric two-wheeler 100. Conversely, the seat frame 13, positioned further rearward in the second position than in the first position, allows for a more rearward placement of structures such as the seat cushion 60. This also increases the rearward length occupied by the seat frame 13 relative to the frame 10, further increasing the overall length of the frame 10 in the longitudinal direction to meet the riding requirements of the large electric two-wheeler 100.

[0035] It is understood that, in some embodiments, see Figure 3 and Figure 4 The frame 10 includes only one seat frame 13, which is switchable between a first position and a second position. See also: [link to embodiments]. Figure 5 The frame 10 may include two seat frames 13. The two seat frames 13 are simultaneously mounted to the rear frame tube 121, with one mounted in a first position and the other mounted in a second position.

[0036] See Figure 3 and Figure 4 In some embodiments, the seat frame 13 includes a carrier 131 and a support rod 132. The carrier 131 is connected to a first connecting portion 1211. The carrier 131 can accommodate at least a seat cushion 60, and can also accommodate a rear cargo box or part of the body panel 20, etc. One end of the support rod 132 is connected to the second connecting portion 1212, and the other end of the support rod 132 is fixed to the carrier 131.

[0037] The support member 131 provides a connection point for assembling structures such as the seat cushion 60, so as to establish a connection between the seat cushion 60 and other structures and the seat frame 13. The support rod 132 is set between the support member 131 and the rear seat body, so that the support member 131, the support rod 132 and the rear frame tube 121 form a triangular support structure, which is not easy to deform and improves the stability of the seat frame 13.

[0038] See Figure 5 In some embodiments, the upper surface of the support member 131 is horizontally positioned to ensure that structures such as the seat cushion 60 are balanced on the support member 131. The extension direction of the support rod 132 is neither parallel nor perpendicular to any horizontal plane, so as to provide oblique support between the support member 131 and the rear frame tube 121.

[0039] In some embodiments, when the seat frame 13 is in the first position, the angle α between the centerline of the support rod 132 and the centerline of the shock absorber 321 ranges from 135° to 180° (the angle α is the angle at the intersection that is less than or equal to 180°). Specifically, the line connecting the midpoint of the upper end and the midpoint of the lower end of the support rod 132 is the centerline of the support rod 132; the line connecting the midpoint of the upper end and the midpoint of the lower end of the shock absorber 321 is the centerline of the shock absorber 321.

[0040] The weight of the load-bearing component 131 and part of the force it receives are transmitted downwards through the first section 1213 of the rear frame tube 121, and another part is transmitted downwards through the support rod 132. The support rod 132 and the shock absorber 321 can be arranged in a straight line or a near-straight line, which makes it easy for the support rod 132 to directly transmit the force to the shock absorber 321. Furthermore, the support direction of the shock absorber 321 is approximately the same as the direction of the force transmitted by the support rod 132. This allows the shock absorber 321 to provide support for the rear frame tube 121 and the seat frame 13, which helps to prevent the rear frame tube 121 from deforming and also helps the seat frame 13 to maintain a stable posture when subjected to external forces, thereby improving the overall deformation resistance of the frame 10.

[0041] In some embodiments, when the seat frame 13 is in the second position, the support rod 132 is located on the side of the right angle region, and the included angle β between the center line of the support rod 132 and the center line of the second pipe segment 1214 ranges from 135° to 180° (the included angle β is the angle at the intersection that is less than or equal to 180°). The line connecting the midpoint of the upper end of the second pipe segment 1214 and the midpoint of the lower end of the second pipe segment 1214 is the center line of the second pipe segment 1214.

[0042] The weight of the load-bearing component 131 and a portion of the force it experiences are transmitted downwards through the first section 1213 of the rear frame tube 121, and another portion is transmitted downwards through the support rod 132. The support rod 132 and the second section 1214 can be arranged in a straight line or approximately in a straight line, which facilitates the support rod 132 to transmit the force to the second section 1214 along the extension direction of the second section 1214. Furthermore, the support direction of the second section 1214 is approximately the same as the direction of the force transmitted by the support rod 132, thereby enabling the second section 1214 to provide support for the seat frame 13. This helps prevent deformation of the rear frame tube 121 and also helps the seat frame 13 to maintain a stable posture when subjected to external forces, thus improving the overall deformation resistance of the frame 10.

[0043] See Figure 3 and Figure 4 In some embodiments, the second connecting portion 1212 is provided with a side mounting surface 1212a. The side mounting surface 1212a is perpendicular to the left-right direction of the frame 10. "Perpendicular" can also mean that the angle between the left-right direction of the frame 10 and the side mounting surface 1212a is within the range of 90° ± 10°. Furthermore, the side mounting surface 1212a may not be perfectly planar, but may be approximately planar. The seat frame 13 is connected to the side mounting surface 1212a. The support rod 132 is also connected to the side mounting surface 1212a.

[0044] When the seat frame 13 is assembled to the side mounting surface 1212a, the seat frame 13 is restricted by the side mounting surface 1212a, which reduces the possibility of the seat frame 13 rotating in the left and right directions of the frame 10 and improves the stability of the seat frame 13 relative to the rear frame 12 after it is assembled to the rear frame 12.

[0045] In some embodiments, the first connecting portion 1211 is provided with an upper mounting surface (not shown). The upper mounting surface is perpendicular to the vertical direction of the frame 10. "Perpendicular" can also mean that the angle between the vertical direction of the frame 10 and the upper mounting surface is within the range of 90° ± 10°. Furthermore, the upper mounting surface may not be perfectly planar, but may be approximately planar. The seat frame 13 is connected to the upper mounting surface. The support member 131 is stacked on the upper mounting surface along the vertical direction of the frame 10. Figures 3 to 5 The middle and upper mounting surfaces are both obscured by the seat frame 13.

[0046] The seat frame 13 can be adjusted in the vertical direction perpendicular to the frame 10. The upper mounting surface can be used to assemble the seat frame 13 and can also reduce the restriction on the seat frame 13 when adjusting its orientation. This makes it easier for the load-bearing member 131 of the seat frame 13 to rotate directly along the upper mounting surface, which helps to reduce the difficulty of adjusting the orientation of the seat frame 13.

[0047] In some embodiments, the rear frame 12 further includes a limiting member 122. The limiting member 122 is connected to the rear frame tube 121. The first connecting portion 1211 is provided with the limiting member 122. The upper end of the limiting member 122 is higher than the upper mounting surface. One end of the seat frame 13 connected to the first connecting portion 1211 abuts against one side of the limiting member 122 in the left-right direction of the frame 10. The bearing member 131 abuts against one side of the limiting member 122 in the left-right direction of the frame 10. The seat frame 13 can be restricted by the limiting member 122, reducing the possibility of the seat frame 13 rotating in the left-right direction of the frame 10 and improving the stability of the seat frame 13 relative to the rear frame 12 after it is assembled to the rear frame 12.

[0048] In some embodiments, the rear frame 12 includes two rear frame tubes 121. The two rear frame tubes 121 are arranged along the left-right direction of the frame 10. The seat frame 13 is provided with four connecting ends 133, which are divided into two groups. Each group of connecting ends 133 consists of two connecting ends 133. Each group of connecting ends 133 corresponds to one rear frame tube 121 and is connected to the first connecting portion 1211 and the second connecting portion 1212 of the corresponding rear frame tube 121. The seat frame 13 is connected to the two rear frame tubes 121 through multiple connecting ends 133, which can reduce the possibility of the seat frame 13 rotating relative to the rear frame 12 in the front-rear, left-right, and up-down directions of the frame 10, and improve the stability of the seat frame 13.

[0049] Understandably, in some embodiments, the seat frame 13 includes two support rods 132. One support rod 132 is supported between the carrier member 131 and a rear frame tube 121, and the other support rod 132 is supported between the carrier member 131 and another rear frame tube 121. The carrier frame is provided with two connecting ends 133, and each support rod 132 is provided with a connecting end 133.

[0050] Furthermore, those skilled in the art should recognize that the above embodiments are merely illustrative of this application and are not intended to limit this application. Any appropriate changes and variations made to the above embodiments within the essential spirit and scope of this application fall within the scope of this application's disclosure.

Claims

1. An electric two-wheeled vehicle, comprising: A vehicle frame, the vehicle frame comprising a front frame, a center frame and a rear frame distributed sequentially along its longitudinal direction; A body panel that at least partially covers the vehicle frame; A suspension system, the suspension system comprising a front suspension and a rear suspension; A walking system, the walking system including front walking wheels and rear walking wheels, the front walking wheels being connected to the front frame via the front suspension, and the rear walking wheels being connected to the rear frame via the rear suspension; A power system, which is supported by the mid-frame and / or the rear frame and provides power to the running gear; The battery is supported by the mid-frame and electrically connected to the power system. Its features are, The rear frame includes a rear frame tube, which has a first connecting part and a second connecting part, which are arranged along the vertical direction of the frame; the frame also includes a seat frame, which is connected to the first connecting part and the second connecting part; the seat frame can be connected to the first connecting part and the second connecting part in at least two orientations perpendicular to the vertical direction of the frame.

2. The electric two-wheeled vehicle according to claim 1, characterized in that, The seat frame has a first position and a second position relative to the rear frame. A horizontal plane perpendicular to the vertical direction of the frame is defined as a projection reference plane. When the seat frame is in the first position, the orthographic projection of the seat frame onto the projection reference plane along the vertical direction of the frame is defined as the first projection. When the seat frame is in the second position, the orthographic projection of the seat frame onto the projection reference plane along the vertical direction of the frame is defined as the second projection. Along the front-rear direction of the frame, the first projection is located directly in front of the second projection.

3. The electric two-wheeled vehicle according to claim 2, characterized in that, The rear suspension includes a shock absorber and a rear swingarm. The rear swingarm is rotatably connected to the rear frame. The lower end of the shock absorber is rotatably connected to the rear swingarm, and the upper end of the shock absorber is rotatably connected to the second connecting part. The upper end of the shock absorber is located in front of the lower end of the shock absorber.

4. The electric two-wheeled vehicle according to claim 3, characterized in that, The vehicle seat frame includes a load-bearing member and a support rod. The load-bearing member is connected to the first connecting part, one end of the support rod is connected to the second connecting part, and the other end of the support rod is fixed to the load-bearing member. When the vehicle seat frame is in the first position, the angle between the center line of the support rod and the center line of the shock absorber is in the range of 135° to 180°.

5. The electric two-wheeled vehicle according to claim 2, characterized in that, The rear support pipe includes a first pipe segment and a second pipe segment. The first connecting part is located above the second connecting part. The first connecting part is disposed on the first pipe segment, and the second connecting part is disposed on the second pipe segment or at the junction of the first pipe segment and the second pipe segment. The centerline of the first pipe segment intersects the centerline of the second pipe segment, and a dominant angle area and a subordinate angle area are formed at the junction of the first pipe segment and the second pipe segment. The angle between the centerline of the first pipe segment and the centerline of the second pipe segment in the dominant angle area is greater than the angle in the subordinate angle area. The vehicle seat frame includes a load-bearing component and a support rod. The load-bearing component is connected to the first connecting part, one end of the support rod is connected to the second connecting part, and the other end of the support rod is fixed to the load-bearing component. When the seat frame is in the second position, the support rod is located on the side where the right angle zone is located, and the angle between the center line of the support rod and the center line of the second pipe segment ranges from 135° to 180°.

6. The electric two-wheeled vehicle according to claim 2, characterized in that, The second connecting part is provided with a side mounting surface, which is perpendicular to the left and right direction of the vehicle frame, and the seat frame is connected to the side mounting surface.

7. The electric two-wheeled vehicle according to claim 2, characterized in that, The first connecting part is provided with an upper mounting surface, which is perpendicular to the vertical direction of the vehicle frame, and the seat frame is connected to the upper mounting surface.

8. The electric two-wheeled vehicle according to claim 7, characterized in that, The rear frame also includes a limiting member, which is disposed at the first connecting part. The upper end of the limiting member is higher than the upper mounting surface. One end of the seat frame connected to the first connecting part abuts against one side of the limiting member in the left-right direction of the frame.

9. The electric two-wheeled vehicle according to claim 1, characterized in that, The vehicle seat frame includes a load-bearing component and a support rod. The load-bearing component can at least assemble a seat cushion. The load-bearing component is connected to the first connecting part. One end of the support rod is connected to the second connecting part, and the other end of the support rod is fixed to the load-bearing component. The upper surface of the load-bearing component is horizontally arranged, and the extension direction of the support rod is neither parallel nor perpendicular to any horizontal plane.

10. The electric two-wheeled vehicle according to claim 1, characterized in that, The rear frame includes two rear frame tubes, which are arranged along the left and right direction of the frame. The seat frame is provided with four connecting ends, which are divided into two groups. Each group of connecting ends corresponds to one rear frame tube and is connected to the first connecting part and the second connecting part of the corresponding rear frame tube.

Images