Electric two-wheeled vehicle

Abstract

The utility model discloses an electric two-wheeled vehicle. The electric two-wheeled vehicle comprises a vehicle frame, a vehicle body covering part, a driving device, a battery pack and a braking system. The driving device comprises a hub motor and a tire, and the tire covers the periphery of the hub motor; the hub motor comprises a motor shell and a mounting shaft, the motor shell is provided with a connecting part and an assembling hole, the motor shell is rotatably connected to the mounting shaft through the assembling hole, and the mounting shaft is fixedly connected with the frame; the braking system comprises a disc brake disc, a gasket and a connecting piece, the disc brake disc and the gasket are arranged on the mounting shaft in a penetrating mode, the disc brake disc is provided with a limiting face, and the gasket is arranged between the limiting face and the connecting part; in the axial direction of the mounting shaft, one side of the gasket abuts against the limiting face, the other side of the gasket abuts against the connecting part, and the disc brake disc and the gasket are fixed to the connecting part through a connecting piece. According to the scheme, the disc brake disc is mounted on the mounting shaft by adjusting the thickness of the shim, so that the adaptability of the hub motor and the disc brake discs of different vehicle types is improved, and the development cost is reduced.

Description

Technical Field

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

[0002] As one of the core components of electric vehicles, improvements to in-wheel motors are of great significance for enhancing the performance of electric vehicles and promoting the development of the electric vehicle industry. Due to constraints such as the design of different vehicle models and the selection of braking systems, in-wheel motors mostly require customized development.

[0003] Typically, the rear brake disc needs to be mounted on the hub motor end cap. Due to differences in the design of the frame, rear swingarm, and body plastic parts across different motorcycle models, the outer envelope of the hub motor will vary. For example, different motorcycle models require different hub motors to ensure the disc brake disc is mounted axially on the hub motor. To adapt to different motorcycle structures, it is often necessary to re-mold the hub motor end cap, resulting in an increase in the types of motors, increased development costs, and longer development cycles. Utility Model Content

[0004] To address the shortcomings of existing technologies, this application provides an electric two-wheeled vehicle whose hub motor is compatible with disc brake discs of different vehicle models, thereby reducing development costs.

[0005] This application provides an electric two-wheeled vehicle, including a frame, a body panel, a drive unit, a battery pack, and a braking system. The body panel, drive unit, battery pack, and braking system are disposed on the frame, and the battery pack is electrically connected to the drive unit. The drive unit includes a hub motor and a tire, with the tire covering the outer periphery of the hub motor. The hub motor includes a motor housing and a mounting shaft. The motor housing has a connecting portion and a mounting hole, and the motor housing is rotatably connected to the mounting shaft through the mounting hole. The mounting shaft is fixedly connected to the frame. The braking system includes a disc brake, a pad, and a connector. The disc brake and the pad pass through the mounting shaft. The disc brake has a limiting surface, and the pad is disposed between the limiting surface and the connecting portion. Along the axial direction of the mounting shaft, one side of the pad abuts against the limiting surface, and the other side abuts against the connecting portion. The disc brake and the pad are fixed to the connecting portion by the connector.

[0006] In at least one embodiment, the motor housing includes an end cover with a weight-reducing groove, a connecting portion disposed in the weight-reducing groove, an assembly hole penetrating the end cover, and a portion for mounting the shaft located in the weight-reducing groove.

[0007] In at least one embodiment, a drain outlet is provided on the end cap, the drain outlet is opened circumferentially along the mounting shaft, and the portion of the mounting shaft located in the weight reduction groove can be exposed through the drain outlet.

[0008] In at least one embodiment, the end cap includes a reinforcing rib disposed in the weight-reducing groove and connected to the connecting portion.

[0009] In at least one embodiment, the end cap includes a protrusion located within a weight-reducing groove and extending axially along the mounting shaft, with a mounting hole penetrating the protrusion.

[0010] In at least one embodiment, the connecting part has a first connecting hole, the gasket has a second connecting hole, the disc brake disc has a third connecting hole, the connecting member passes through the first connecting hole and the second connecting hole in a direction parallel to the mounting shaft axis, and is detachably fixed to the third connecting hole.

[0011] In at least one embodiment, the disc brake disc has a hollowed-out portion that is distributed circumferentially along the disc brake disc.

[0012] In at least one embodiment, the hollow portion includes multiple through holes, which are evenly distributed along the circumference of the disc brake disc.

[0013] In at least one embodiment, the braking system further includes a brake caliper and a handbrake unit. The brake caliper is disposed on the frame, the frame includes a handlebar, the handbrake unit is disposed on the handlebar, the brake caliper is connected to the handbrake unit, and the handbrake unit is used to drive the brake caliper to clamp the disc brake disc.

[0014] In at least one embodiment, the frame includes a rear swingarm, and the two ends of the mounting shaft are fixedly connected to the rear swingarm.

[0015] This application provides an electric two-wheeled vehicle, whose hub motor includes a motor housing and a mounting shaft. The motor housing has a connecting portion and a mounting hole, and the motor housing is rotatably connected to the mounting shaft through the mounting hole. A disc brake disc and a washer pass through the mounting shaft. The disc brake disc has a limiting surface, and the washer is disposed between the limiting surface and the connecting portion. Along the axial direction of the mounting shaft, one side of the washer abuts against the limiting surface, and the other side abuts against the connecting portion. The disc brake disc and the washer are fixed to the connecting portion by a connector. The thickness of the washer can affect the mounting position of the disc brake disc on the mounting shaft, thereby allowing the position of different disc brake discs for different vehicle models to be matched by adjusting the thickness of the washer. In other words, when matching different disc brake discs for different vehicle models, the different disc brake disc types result in different mounting positions of the disc brake discs on the mounting shaft. This solution allows the hub motor body to remain unchanged, and the mounting position of the disc brake disc on the mounting shaft to be achieved by adjusting the thickness of the washer, thereby improving the compatibility of the hub motor with disc brake discs of different vehicle models and reducing development costs. Attached Figure Description

[0016] Figure 1 This is a perspective view of an electric two-wheeled vehicle in one embodiment of this application.

[0017] Figure 2 This is an exploded view of the hub motor and braking system in one embodiment of this application.

[0018] Figure 3 This is a perspective view of the end cap in one embodiment of this application.

[0019] Figure 4 This is a perspective view of a hub motor and braking system in one embodiment of this application.

[0020] The following detailed description, in conjunction with the accompanying drawings, will further illustrate this application. Detailed Implementation

[0021] 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.

[0022] 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 to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

[0023] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment that is mutually exclusive with other embodiments.

[0024] The embodiments of this application will be further described below with reference to the accompanying drawings.

[0025] like Figure 1 As shown, an embodiment of this application provides an electric two-wheeled vehicle 100.

[0026] In the embodiments of this application, the type of electric two-wheeler 100 is not specifically limited. For example, the electric two-wheeler 100 may be, but is not limited to, a snowmobile or similar vehicle.

[0027] See Figure 1 In some embodiments, the electric two-wheeled vehicle 100 includes a frame 10, a body panel 20, a drive unit 30, a battery pack, and a braking system 40. The body panel 20, drive unit 30, battery pack, and braking system 40 are disposed on the frame 10, and the battery pack is electrically connected to the drive unit 30. The drive unit 30 includes a front wheel 31 and a rear wheel 32.

[0028] In some embodiments, the rear wheel 32 is a drive wheel used to provide driving power for the entire vehicle.

[0029] See Figures 1 to 3In some embodiments, the rear wheel 32 includes a hub motor 321 and a tire 323, with the tire 323 covering the outer periphery of the hub motor 321. The hub motor 321 includes a motor housing 3211 and a mounting shaft 322. The motor housing 3211 has a mounting hole 3212, and the motor housing 3211 is rotatably connected to the mounting shaft 322 through the mounting hole 3212. The mounting shaft 322 is fixedly connected to the frame 10. When the hub motor 321 is driven, it directly drives the rear wheel 32 to rotate relative to the mounting shaft 322, thus propelling the entire vehicle.

[0030] See Figure 1 In some embodiments, the frame 10 includes a rear swingarm 11, and the two ends of the mounting shaft 322 are fixedly connected to the rear swingarm 11 so that the rear wheel 32 can rotate relative to the mounting shaft 322 to enable the vehicle to move.

[0031] See Figures 2 to 4 In some embodiments, the motor housing 3211 includes an end cap 3213, which includes a connecting portion 3213a. The braking system 40 includes a disc brake disc 41, a washer 42, and a connector 43. The disc brake disc 41 and the washer 42 pass through the mounting shaft 322. The disc brake disc 41 has a limiting surface 411, and the washer 42 is disposed between the limiting surface 411 and the connecting portion 3213a. Along the axial direction X of the mounting shaft 322, one side of the washer 42 abuts against the limiting surface 411, and the other side abuts against the connecting portion 3213a. The disc brake disc 41 and the washer 42 are fixed to the connecting portion 3213a by the connector 43.

[0032] The thickness of the shim 42 affects the mounting position of the disc brake disc 41 on the mounting shaft 322. This allows for adjustment of the shim 42 thickness to match the positions of different disc brake discs 41 on different vehicle models. In other words, when matching different disc brake discs 41 on different vehicle models, the different types of disc brake discs 41 result in different mounting positions on the mounting shaft 322. This solution keeps the hub motor 321 unchanged, and by adjusting the thickness of the shim 42, ensures that the disc brake disc 41 and hub motor 321 are installed without axial clearance in the X-axis direction when mounted on the mounting shaft 322. This improves the compatibility of the hub motor 321 with different vehicle model disc brake discs 41 and reduces development costs.

[0033] See Figure 2 and Figure 3 In some embodiments, the end cap 3213 has a weight-reduction groove 3213b, a connecting portion 3213a is disposed in the weight-reduction groove 3213b, a mounting hole 3212 penetrates the end cap 3213, and a portion of the mounting shaft 322 is located in the weight-reduction groove 3213b. The weight-reduction groove 3213b can reduce the overall weight of the hub motor 321, thereby facilitating the lightweight design of the electric two-wheeled vehicle 100.

[0034] See Figure 2 In some embodiments, the connecting part 3213a has a first connecting hole 3213c, the gasket 42 has a second connecting hole 421, the disc brake disc 41 has a third connecting hole 412, and the connecting member 43 passes through the first connecting hole 3213c and the second connecting hole 421 in a direction parallel to the axial direction X of the mounting shaft 322, and is detachably fixed to the third connecting hole 412.

[0035] In some embodiments, the connector 43 is a bolt with the head of the bolt located on the side of the disc brake disc 41 away from the washer 42. The bolt is detachably inserted through the second connecting hole 421 and the third connecting hole 412, and the tail of the bolt is threaded into the first connecting hole 3213c.

[0036] See Figure 2 In some embodiments, multiple connecting portions 3213a are provided, and the multiple connecting portions 3213a are evenly spaced along the circumferential direction R of the mounting shaft 322. Correspondingly, the number of first connecting holes 3213c, second connecting holes 421, third connecting holes 412, and connectors 43 is the same as the number of connecting portions 3213a. For example, three connecting portions 3213a are provided, and three first connecting holes 3213c, three second connecting holes 421, three third connecting holes 412, and three connectors 43 are provided respectively. The disc brake disc 41 and the gasket 42 are installed through multiple connectors 43, which improves the stability of the disc brake disc 41 and the gasket 42 on the end cap 3213.

[0037] See Figure 2 In some embodiments, the gasket 42 has a first mounting hole 422, the disc brake disc 41 has a second mounting hole 413, and the mounting shaft 322 passes through the first mounting hole 422 and the second mounting hole 413 into the gasket 42 and the disc brake disc 41. There is a gap between the outer peripheral wall of the mounting shaft 322 and the hole walls of the first mounting hole 422 and the second mounting hole 413, so that the gasket 42 and the disc brake disc 41 are less likely to rub against the mounting shaft 322 when they rotate with the hub motor 321.

[0038] See Figure 3 and Figure 4In some embodiments, the end cap 3213 has a drain outlet 3213d, which is located along the circumferential direction R of the mounting shaft 322. The portion of the mounting shaft 322 located in the weight reduction groove 3213b can be exposed through the drain outlet 3213d. When the electric two-wheeled vehicle 100 travels on a flooded road, the water level reaches the bottom of the end cap 3213 of the hub motor 321, causing water to enter the end cap 3213, for example, into the weight reduction groove 3213b. Over time, this may cause water and sediment to enter the hub motor 321, causing a short circuit. The drain outlet 3213d serves to drain water. When the hub motor 321 rotates, the water in the end cap 3213 is thrown out from the drain outlet 3213d under the action of centrifugal force. This ensures that even if water enters the end cap 3213, it can flow out from the drain outlet 3213d in a timely manner, reducing the risk of water entering the hub motor 321.

[0039] In some embodiments, multiple drain outlets 3213d are provided, and multiple drain outlets 3213d drain water simultaneously, which helps to improve drainage efficiency. For example, in an embodiment where three connecting portions 3213a are provided, a drain outlet 3213d is provided between two adjacent connecting portions 3213a.

[0040] See Figure 3 In some embodiments, the end cap 3213 includes a reinforcing rib 3213e, which is disposed in the weight-reducing groove 3213b and connected to the connecting portion 3213a. Multiple reinforcing ribs 3213e may be provided on each connecting portion 3213a. The combined arrangement of the reinforcing rib 3213e and the weight-reducing groove 3213b helps to improve the structural strength of the end cap 3213 located at the connecting portion 3213a while satisfying the weight reduction requirement of the end cap 3213.

[0041] See Figure 3 In some embodiments, the end cap 3213 includes a protrusion 3213f located within the weight-reducing groove 3213b and extending along the axial direction X of the mounting shaft 322. The mounting hole 3212 penetrates the protrusion 3213f. The protrusion 3213f increases the length of the mounting hole 3212, thereby increasing the assembly length between the mounting shaft 322 and the mounting hole 3212, thus improving the assembly stability between the mounting shaft 322 and the hub motor 321, and enhancing vehicle driving stability.

[0042] See Figure 2 In some embodiments, the disc brake disc 41 has a hollow portion 414, which is distributed along the circumferential direction R of the disc brake disc 41. The hollow portion 414 is beneficial for the weight reduction design of the vehicle.

[0043] In some embodiments, the cutout portion 414 includes a plurality of through holes 4141, which are evenly distributed along the circumferential direction R of the disc brake disc 41. The evenly distributed plurality of through holes 4141 facilitates maintaining balance when the hub motor 321 rotates, while achieving weight reduction.

[0044] In some embodiments, the cutout portion 414 communicates with the second mounting hole 413, thereby facilitating the manufacturing and processing of the disc brake disc 41.

[0045] See Figure 1 In some embodiments, the braking system 40 further includes a brake caliper 44 and a handbrake unit 45. The brake caliper 44 is mounted on the frame 10, which includes a handlebar 11. The handbrake unit 45 is mounted on the handlebar 11, and the brake caliper 44 is connected to the handbrake unit 45. The handbrake unit 45 is used to drive the brake caliper 44 to clamp the disc brake disc 41. When the vehicle brakes, the driver holds the handbrake unit 45, causing the handbrake unit 45 to drive the brake caliper 44 to clamp the disc brake disc 41. The disc brake disc 41 then drives the hub motor 321 to achieve braking.

[0046] In this embodiment of the electric two-wheeled vehicle 100, a shim 42 is provided between the disc brake disc 41 and the end cover 3213. This allows the disc brake disc 41 to be installed on the mounting shaft 322 by adjusting the thickness of the shim 42 without changing the hub motor 321 body. This improves the compatibility of the hub motor 321 with disc brake discs 41 of different vehicle models and reduces development costs.

[0047] 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: Frame; A body panel that at least partially covers the vehicle frame; A drive unit, supported by the vehicle frame, includes a hub motor and a tire, with the tire covering the outer periphery of the hub motor; A battery pack is mounted on the vehicle frame and is electrically connected to the drive unit. A braking system, at least partially disposed on the vehicle frame; The wheel hub motor is characterized in that it includes a motor housing and a mounting shaft. The motor housing has a connecting portion and a mounting hole. The motor housing is rotatably connected to the mounting shaft through the mounting hole. The mounting shaft is fixedly connected to the vehicle frame. The braking system includes a disc brake disc, a gasket, and a connector. The disc brake disc and the gasket pass through the mounting shaft. The disc brake disc has a limiting surface. The gasket is disposed between the limiting surface and the connecting portion. Along the axial direction of the mounting shaft, one side of the gasket abuts against the limiting surface, and the other side abuts against the connecting portion. The disc brake disc and the gasket are fixed to the connecting portion by the connector.

2. The electric two-wheeled vehicle as described in claim 1, characterized in that, The motor housing includes an end cover with a weight-reducing groove, a connecting portion disposed in the weight-reducing groove, an assembly hole penetrating the end cover, and a portion of the mounting shaft located in the weight-reducing groove.

3. The electric two-wheeled vehicle as described in claim 2, characterized in that, The end cap is provided with a drain outlet, which is opened circumferentially along the mounting shaft, and the portion of the mounting shaft located in the weight reduction groove can be exposed through the drain outlet.

4. The electric two-wheeled vehicle as described in claim 2, characterized in that, The end cap includes a reinforcing rib, which is disposed in the weight-reducing groove and connected to the connecting portion.

5. The electric two-wheeled vehicle as described in claim 2, characterized in that, The end cap includes a protrusion located within the weight-reducing groove and extending axially along the mounting shaft, with the mounting hole penetrating the protrusion.

6. The electric two-wheeled vehicle as described in claim 1, characterized in that, The connecting part has a first connecting hole, the gasket has a second connecting hole, the disc brake disc has a third connecting hole, the connecting member passes through the first connecting hole and the second connecting hole in a direction parallel to the axial direction of the mounting shaft, and is detachably fixed to the third connecting hole.

7. The electric two-wheeled vehicle as described in claim 1, characterized in that, The disc brake disc has a hollowed-out portion, which is distributed along the circumference of the disc brake disc.

8. The electric two-wheeled vehicle as described in claim 7, characterized in that, The hollowed-out portion includes multiple through holes, which are evenly distributed along the circumference of the disc brake disc.

9. The electric two-wheeled vehicle as described in claim 1, characterized in that, The braking system also includes a brake caliper and a handbrake unit. The brake caliper is mounted on the frame, the frame includes a handlebar, the handbrake unit is mounted on the handlebar, the brake caliper is connected to the handbrake unit, and the handbrake unit is used to drive the brake caliper to clamp the disc brake disc.

10. The electric two-wheeled vehicle as described in claim 1, characterized in that, The frame includes a rear swingarm, and both ends of the mounting shaft are fixedly connected to the rear swingarm.

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