Universal hub motor for electric motorcycle

Abstract

The invention relates to the technical field of hub motors, in particular to a universal hub motor for an electric motorcycle, which comprises a power mechanism, the power mechanism comprises a mounting shell, a mounting cavity communicated with the outside is formed in the mounting shell, a motor is fixedly connected in the mounting cavity, a heat dissipation mechanism is arranged in the mounting shell, and the heat dissipation mechanism is fixedly connected with the motor. The heat dissipation mechanism comprises an annular heat dissipation cavity formed in the mounting shell, twenty heat dissipation holes are evenly formed in the side wall of the heat dissipation cavity in the circumferential direction, and the heat dissipation holes communicate with the external space; the motor has the beneficial effects that the motor can be mounted on a wheel through the arrangement of the mounting shell, and through the arrangement of the heat dissipation cavity and the heat dissipation holes, when a vehicle runs, external air can enter the heat dissipation cavity through part of the heat dissipation holes and is discharged from the other part of the heat dissipation holes, so that part of heat of the motor is brought out, and the heat dissipation efficiency of the motor is improved. And through the arrangement of the heat dissipation cavity, the weight of the hub motor is greatly reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of in-wheel motors, and particularly to a general in-wheel motor for electric motorcycles. Background Art

[0002] The in-wheel motor of an electric motorcycle is a motor directly installed inside the wheel hub. It serves as a driving source to directly provide power for the vehicle. This design integrates the motor, the reduction mechanism (if any), and the wheel, eliminating traditional mechanical transmission components such as drive shafts or chains, simplifying the vehicle structure, reducing the overall vehicle weight, and improving the energy utilization efficiency.

[0003] The in-wheel motor has the following advantages:

[0004] High efficiency: Reduces energy losses in the traditional transmission system because the power acts directly on the wheels.

[0005] Simplified structure: Does not require complex transmission devices, making the vehicle structure more concise and reducing the maintenance cost.

[0006] Increased design freedom: Designers can arrange the interior space of the vehicle more flexibly, improving the design flexibility of the vehicle.

[0007] Improved driving stability: Some high-end in-wheel motor systems can independently control the torque output of each wheel, which helps to improve the vehicle's handling and driving stability.

[0008] The motorcycle driven by an in-wheel motor can reach a relatively high maximum speed, usually between 60 km / h and 80 km / h. For example, for some motorcycles equipped with a 1500-watt in-wheel motor, the measured maximum speed during actual riding can reach 61.3 km / h. In addition, some high-end electric motorcycles, equipped with high-performance motors and controllers, can reach a maximum speed of 135 km / h. The in-wheel motor has the advantages of simple structure, low price, and convenient maintenance, but its heat dissipation performance is poor, and it is easy to generate a large amount of heat during high-speed driving, which may cause safety problems.

[0009] Therefore, a general in-wheel motor for electric motorcycles is needed to solve the above problems. Summary of the Invention

[0010] In order to solve the above problems, that is, to solve the problem that the in-wheel motor of an electric motorcycle generates a large amount of heat during high-speed driving and is prone to safety accidents, the present invention provides a general in-wheel motor for electric motorcycles.

[0011] A general hub motor for an electric motorcycle, comprising a power mechanism. The power mechanism includes a mounting shell, an installation cavity communicating with the outside is formed in the mounting shell, a motor is fixedly connected in the installation cavity, a heat dissipation mechanism is arranged in the mounting shell, the heat dissipation mechanism includes an annular heat dissipation cavity formed in the mounting shell, and the side wall of the heat dissipation cavity is evenly provided with twenty heat dissipation holes along the circumferential direction, and the heat dissipation holes communicate with the outside space.

[0012] Specifically, during use, the motor is installed in the installation cavity, and then the mounting shell is installed on the rear wheel of the vehicle, so that the motor can be installed. When the vehicle is running, external air enters the heat dissipation cavity through some of the heat dissipation holes, and then the air is discharged from some other heat dissipation holes, taking out some of the heat generated during the operation of the motor, thereby cooling the motor.

[0013] Through the setting of the mounting shell, the motor can be installed on the wheel, and through the setting of the heat dissipation cavity and the heat dissipation holes, when the vehicle is running, external air can enter the heat dissipation cavity through some of the heat dissipation holes and be discharged from some other heat dissipation holes, taking out some of the heat of the motor to cool the motor, and through the setting of the heat dissipation cavity, the weight of the hub motor is greatly reduced.

[0014] Preferably, the motor is connected to an output shaft, a wheel is fixedly sleeved on the output shaft, a cavity with an opening facing outwards is formed in the wheel, the mounting shell is located in the cavity, and a tire is sleeved on the wheel.

[0015] Specifically, during use, when the motor works, the motor drives the output shaft to rotate, the output shaft drives the wheel to rotate, and the wheel drives the tire to rotate.

[0016] Through the setting of the output shaft and the wheel, the motor can drive the wheel to rotate through the output shaft, thereby driving the tire to drive the vehicle to run.

[0017] Preferably, both ends of the output shaft are connected with a connecting mechanism. The connecting mechanism includes a U-shaped connecting frame. One side of the connecting frame is fixedly connected with a fixing frame, the fixing frame is fixedly connected with the motor, and the connecting frame is connected with the vehicle body.

[0018] Specifically, through the setting of the fixing frame, the motor and the mounting shell can be fixed, so that when the motor starts, it can drive the output shaft to rotate and drive the vehicle to run.

[0019] Preferably, the power mechanism further includes a brake disc fixedly sleeved on the output shaft, and a brake module is fixedly connected to the connecting frame, and the brake module clamps the brake disc.

[0020] Specifically, during use, when the output shaft rotates, it drives the brake disc to rotate. When braking is required, the brake module is activated. The brake module clamps the brake disc, thereby braking the output shaft and thus braking the vehicle.

[0021] Furthermore, the brake module is a prior art and will not be elaborated herein.

[0022] Preferably, the heat dissipation mechanism further includes an air inlet member disposed in the mounting shell. The air inlet member includes an air inlet opening formed in the mounting shell. The air inlet opening communicates with the external space. A guiding cavity is formed in the mounting shell. The air inlet opening communicates with the guiding cavity. A communicating groove is provided between the guiding cavity and the mounting cavity. An annular retaining ring is fixedly connected to the mounting shell. The retaining ring is rotatably connected to the inner wall of the cavity. Twenty air outlet openings are evenly formed in the circumferential direction on the inner wall of the cavity. The air outlet openings communicate with the external space.

[0023] Preferably, the air inlet member further includes a C-shaped baffle fixedly connected to the retaining ring. The baffle is rotatably connected to the inner wall of the cavity. The baffle closes part of the air outlet openings.

[0024] Preferably, the air inlet member further includes an electric push rod fixedly connected to the mounting shell. The output end of the electric push rod is fixedly connected with a closing plate. The closing plate can close the air outlet openings far from the communicating groove.

[0025] Preferably, a guiding member is provided on the connecting frame. The guiding member includes an inclined air guiding plate. The air guiding plate is located on the side of the air inlet opening close to the motor.

[0026] Preferably, the air guiding member further includes an electromagnetic slide rail fixedly connected to the connecting frame. An electromagnetic slider is slidably connected in the electromagnetic slide rail. The electromagnetic slider is fixedly connected to the air guiding plate. A sliding groove with an opening facing the mounting shell is formed in the air guiding plate. An extension plate is slidably connected in the sliding groove. A spring is connected between the extension plate and the sliding groove. The end of the extension plate contacts the mounting shell. The spring is in a compressed state.

[0027] Preferably, the connecting mechanism further includes a through groove formed in the connecting frame. The through groove is located on the side of the connecting frame close to the air guiding plate.

[0028] Furthermore, the permanent magnet in the motor is selected as a high-efficiency permanent magnet.

[0029] The beneficial effects of the present invention are as follows:

[0030] 1. Through the setting of the mounting shell, the motor can be mounted on the wheel. And through the setting of the heat dissipation cavity and heat dissipation holes, when the vehicle is running, external air can enter the heat dissipation cavity through some heat dissipation holes and discharge from another part of the heat dissipation holes, taking out part of the heat of the motor to cool the motor. And through the setting of the heat dissipation cavity, the weight of the in-wheel motor is greatly reduced.

[0031] 2. Through the setting of the air inlet component, when the vehicle is running, external air can directly enter the mounting cavity through the air inlet, making the external air directly contact with the motor. Then the air discharges from the air outlet, thus taking out the heat generated by the motor to dissipate the heat of the motor. And in cooperation with the heat dissipation of the heat dissipation cavity, the heat dissipation effect on the motor is better. And after the air discharges from the air outlet, it can blow on the brake disc to dissipate the heat of the brake disc.

[0032] 3. Through the function of the baffle, during the rotation of the wheel, air always discharges from the air outlet far from the communication groove, enabling the air to fully pass through the mounting cavity, thus fully taking out the heat generated by the motor, and thereby improving the conversion efficiency of electric energy. Through the setting of the closing plate, when it rains, the closing plate can be moved by the electric push rod to close the air outlet far from the communication groove, thus preventing rainwater from entering the cavity through the air outlet and affecting the operation of the motor.

[0033] 4. Through the setting of the air guide plate, during the running of the vehicle, air can flow into the air inlet, and through the setting of the air guide plate, the air intake volume of the air inlet can be increased, thereby improving the heat dissipation efficiency and further improving the conversion efficiency of electric energy. Through the setting of the extension plate, when it rains, the extension plate can be moved by the electromagnetic slider, enabling the extension plate to close the air inlet and preventing rainwater from entering the mounting cavity and directly contacting the motor, affecting the working efficiency of the motor. And through the contact setting between the extension plate and the mounting shell, the air can better enter the air inlet through the guidance of the air guide plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 is a schematic three-dimensional structure of the present invention Figure 1 ;

[0035] Figure 2 is a schematic three-dimensional structure of the present invention Figure 2 ;

[0036] Figure 3 is a schematic three-dimensional structure of the present invention [[ID=?]] Figure 3 ;

[0037] Figure 4 is the front view of the present invention Figure 3 ;

[0038] Figure 5For the present invention Figure 4 Isometric sectional view at A-A in the present invention;

[0039] Figure 6 For the present invention Figure 4 Isometric sectional view at B-B in the present invention;

[0040] Figure 7 For the present invention Figure 6 Partial enlarged view at C in the present invention;

[0041] Figure 8 For the present invention Figure 6 Partial enlarged view at D in the present invention;

[0042] Figure 9 For the present invention Figure 3 Right view of the present invention;

[0043] Figure 10 For the present invention Figure 9 Isometric sectional view at E-E in the present invention;

[0044] Figure 11 For the present invention Figure 9 Isometric sectional view at F-F in the present invention.

[0045] In the figure:

[0046] 1. Power mechanism; 11. Installation shell; 12. Installation cavity; 13. Motor; 14. Output shaft; 15. Wheel; 16. Cavity; 17. Tire; 18. Brake disc; 19. Brake module;

[0047] 2. Heat dissipation mechanism; 21. Heat dissipation cavity; 22. Heat dissipation holes; 23. Air inlet part; 231. Air inlet; 232. Guide cavity; 233. Communication groove; 234. Retaining ring; 235. Air outlet; 236. Baffle; 237. Electric push rod; 238. Sealing plate; 24. Guide part; 241. Air guide plate; 242. Electromagnetic slide rail; 243. Electromagnetic slider; 244. Slide groove; 245. Extension plate;

[0048] 3. Connection mechanism; 31. Connection frame; 32. Fixed frame; 33. Through groove. Detailed implementation manners

[0049] The preferred implementation manners of the present invention will be described below with reference to the accompanying drawings. Those skilled in the art should understand that these implementation manners are only used to explain the technical principle of the present invention and are not intended to limit the protection scope of the present invention.

[0050] As Figure 1 、 3As shown in Figures 5 and 10, an embodiment of the present invention discloses a universal hub motor for an electric motorcycle, including a power mechanism 1. The power mechanism 1 includes a mounting shell 11, and an installation cavity 12 communicating with the outside is opened on the mounting shell 11. A motor 13 is fixedly connected in the installation cavity 12. A heat dissipation mechanism 2 is arranged in the mounting shell 11. The heat dissipation mechanism 2 includes an annular heat dissipation cavity 21 opened in the mounting shell 11. Twenty heat dissipation holes 22 are evenly arranged along the circumferential direction on the side wall of the heat dissipation cavity 21, and the heat dissipation holes 22 communicate with the outside space.

[0051] Specifically, during use, the motor 13 is installed in the installation cavity 12, and then the mounting shell 11 is installed on the rear wheel of the vehicle, so that the motor 13 can be installed. When the vehicle is running, external air enters the heat dissipation cavity 21 through some of the heat dissipation holes 22, and then the air is discharged from some other heat dissipation holes 22, taking out some of the heat generated during the operation of the motor 13, thereby cooling the motor 13.

[0052] Through the setting of the mounting shell 11, the motor 13 can be installed on the wheel. And through the setting of the heat dissipation cavity 21 and the heat dissipation holes 22, when the vehicle is running, external air can enter the heat dissipation cavity 21 through some of the heat dissipation holes 22 and be discharged from some other heat dissipation holes 22, taking out some of the heat of the motor 13 to cool the motor 13. And through the setting of the heat dissipation cavity 21, the weight of the hub motor is greatly reduced.

[0053] As Figure 2 、 3 As shown in Figures 5 and 13, the motor 13 is connected to an output shaft 14. A wheel 15 is fixedly sleeved on the output shaft 14. A cavity 16 with an opening facing outwards is opened in the wheel 15. The mounting shell 11 is located in the cavity 16. A tire 17 is sleeved on the wheel 15.

[0054] Specifically, during use, when the motor 13 is working, the motor 13 drives the output shaft 14 to rotate, the output shaft 14 drives the wheel 15 to rotate, and the wheel 15 drives the tire 17 to rotate.

[0055] Through the setting of the output shaft 14 and the wheel 15, the motor 13 can drive the wheel 15 to rotate through the output shaft 14, thereby driving the tire 17 to drive the vehicle to run.

[0056] As Figure 1 、 2 As shown in Figures 3 and 25, both ends of the output shaft 14 are connected with a connecting mechanism 3. The connecting mechanism 3 includes a U-shaped connecting frame 31. One side of the connecting frame 31 is fixedly connected with a fixing frame 32. The fixing frame 32 is fixedly connected with the motor 13, and the connecting frame 31 is connected with the vehicle body.

[0057] Specifically, by disposing the fixing bracket 32 , the motor 13 and the mounting shell 11 are fixed, so that when the motor 13 is started, the output shaft 14 can be driven to rotate, thereby driving the vehicle to travel.

[0058] like Figure 2 、 5 As shown, the power mechanism 1 further includes a brake disc 18 fixedly mounted on the output shaft 14 , and a brake module 19 is fixedly connected to the connecting frame 31 , and the brake module 19 clamps the brake disc 18 .

[0059] Specifically, when in use, the output shaft 14 rotates to drive the brake disc 18 to rotate. When braking is required, the brake module 19 is activated, and the brake module 19 clamps the brake disc 18, thereby braking the output shaft 14 and thus braking the vehicle.

[0060] Furthermore, the brake module 19 is a prior art and will not be described in detail.

[0061] like Figure 3 、 6 As shown in Figures 7 and 8, the heat dissipation mechanism 2 also includes an air inlet member 23 arranged in the mounting shell 11, and the air inlet member 23 includes an air inlet 231 opened on the mounting shell 11, and the air inlet 231 is communicated with the external space. A guide cavity 232 is opened in the mounting shell 11, and the air inlet 231 is communicated with the guide cavity 232. A connecting groove 233 is provided between the guide cavity 232 and the mounting cavity 12. An annular retaining ring 234 is fixedly connected to the mounting shell 11, and the retaining ring 234 is rotatably connected to the inner wall of the cavity 16. Twenty air outlets 235 are evenly opened on the inner wall of the cavity 16 along the circumferential direction, and the air outlets 235 are communicated with the external space.

[0062] Specifically, when in use, when the vehicle is driving, the outside air enters the guide cavity 232 through the air inlet 231, and then the air enters the installation cavity 12 through the connecting groove 233, and then the air is discharged from the installation cavity 12 through the air outlet 235. The air is in direct contact with the motor 13, and the heat generated by the motor 13 is taken out. After the air is discharged from the air outlet 235, it blows onto the brake disc 18.

[0063] Through the setting of the air inlet member 23, when the vehicle is driving, the outside air can directly enter the installation cavity 12 through the air inlet 231, so that the outside air is in direct contact with the motor 13, and then the air is discharged from the air outlet 235, thereby taking out the heat generated by the motor 13 and dissipating the heat of the motor 13. In addition, in conjunction with the heat dissipation of the heat dissipation cavity 21, the heat dissipation effect of the motor 13 is better, and after being discharged from the air outlet 235, the air can be blown onto the brake disc 18 to dissipate the heat of the brake disc 18.

[0064] As Figure 7 , 11 shown, the air inlet member 23 further includes a C-shaped baffle 236 fixedly connected to the retaining ring 234. The baffle 236 is rotatably connected to the inner wall of the cavity 16, and the baffle 236 closes part of the air outlet 235.

[0065] Specifically, during use, when air is discharged from the air outlet 235, due to the blocking effect of the baffle 236, the air is discharged from the air outlet 235 far from the communication groove 233. Due to the rotation of the wheel 15, the air outlet 235 rotates continuously, but due to the blocking effect of the baffle 236, the air outlet 235 far from the communication groove 233 is always kept open.

[0066] Through the action of the baffle 236, during the rotation of the wheel 15, the air is always discharged from the air outlet 235 far from the communication groove 233, so that the air can fully pass through the installation cavity 12, thereby fully taking out the heat generated by the motor 13, thus improving the conversion efficiency of electric energy.

[0067] As Figure 8 shown, the air inlet member 23 further includes an electric push rod 237 fixedly connected to the installation shell 11. The output end of the electric push rod 237 is fixedly connected with a closing plate 238, and the closing plate 238 can close the air outlet 235 far from the communication groove 233.

[0068] Specifically, when it rains during the vehicle driving, the electric push rod 237 is started. The output end of the electric push rod 237 drives the closing plate 238 to move, so that the closing plate 238 moves towards the inner wall of the cavity 16 to close the air outlet 235 far from the communication groove 233, preventing rainwater from entering the cavity 16 and damaging the motor 13.

[0069] Through the arrangement of the closing plate 238, when it rains, the electric push rod 237 can be moved to make the closing plate 238 close the air outlet 235 far from the communication groove 233, thereby preventing rainwater from entering the cavity 16 through the air outlet 235 and affecting the operation of the motor 13.

[0070] Furthermore, the electric push rod 237 is an existing technology and will not be elaborated here.

[0071] As Figure 3 , 7 shown, a guiding member 24 is arranged on the connecting frame 31. The guiding member 24 includes an inclined air guiding plate 241, and the air guiding plate 241 is located on one side of the air inlet 231 close to the motor 13.

[0072] Specifically, during use, when the vehicle is driving, the air flows into the air inlet 231 through the guiding of the air guiding plate 241.

[0073] Through the setting of the air deflector 241, air can flow into the air inlet 231 during vehicle driving. And through the setting of the air deflector 241, the air intake volume of the air inlet 231 can be increased, thereby improving the heat dissipation efficiency and further improving the conversion efficiency of electric energy.

[0074] As Figure 7 As shown, the guiding member 24 further includes an electromagnetic slide rail 242 fixedly connected to the connecting frame 31. An electromagnetic slider 243 is slidably connected in the electromagnetic slide rail 242. The electromagnetic slider 243 is fixedly connected to the air deflector 241. A chute 244 with an opening facing the mounting shell 11 is formed in the air deflector 241. An extension plate 245 is slidably connected in the chute 244. A spring is connected between the extension plate 245 and the chute 244. The end of the extension plate 245 contacts the mounting shell 11, and the spring is in a compressed state.

[0075] Specifically, when in use, when it rains, the electromagnetic slider 243 is started. The electromagnetic slider 243 slides in the electromagnetic slide rail 242. The electromagnetic slider 243 moves in a direction away from the motor 13. The electromagnetic slider 243 drives the air deflector 241 to move. The air deflector 241 drives the extension plate 245 to move. During the movement of the extension plate 245, the spring is further compressed and slides in the chute 244. When the extension plate 245 closes the air inlet 231, the electromagnetic slider 243 is stopped.

[0076] Through the setting of the extension plate 245, when it rains, the movement of the electromagnetic slider 243 can drive the extension plate 245 to move, so that the extension plate 245 can close the air inlet 231, avoiding rainwater from entering the installation cavity 12 and directly contacting the motor 13, which affects the working efficiency of the motor 13. And through the contact setting between the extension plate 245 and the mounting shell 11, air can better enter the air inlet 231 through the guiding of the air deflector 241.

[0077] Furthermore, the electromagnetic slide rail 242 and the electromagnetic slider 243 are prior art and will not be elaborated.

[0078] As Figure 3 As shown, the connecting mechanism 3 further includes a through groove 33 formed in the connecting frame 31. The through groove 33 is located on one side of the connecting frame 31 close to the air deflector 241.

[0079] Through the setting of the through groove 33, when the vehicle is driving, air can better blow on the air deflector 241, so that more air enters the air inlet 231.

[0080] Furthermore, the permanent magnet in the motor 13 is selected as an efficient permanent magnet.

[0081] It should be noted that in the description of the present invention, the terms indicating directions or positional relationships such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings. This is only for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0082] In addition, it should also be noted that in the description of the present invention, unless otherwise clearly specified and defined, the terms "mounted", "connected", "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two elements. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0083] The term "comprising" or any other similar term is intended to cover non-exclusive inclusion, so that a process, article, or apparatus / device comprising a series of elements not only includes those elements, but also includes other elements not explicitly listed, or also includes elements inherent in these processes, articles, or apparatus / device.

[0084] So far, the technical solutions of the present invention have been described in combination with the preferred embodiments shown in the drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. A general hub motor for an electric motorcycle, characterized in that, It includes a power mechanism (1), and the power mechanism (1) includes a mounting shell (11). An installation cavity (12) communicating with the outside is provided on the mounting shell (11). A motor (13) is fixedly connected in the installation cavity (12). A heat dissipation mechanism (2) is arranged in the mounting shell (11). The heat dissipation mechanism (2) includes an annular heat dissipation cavity (21) opened in the mounting shell (11). At least two heat dissipation holes (22) are evenly arranged along the circumferential direction on the side wall of the heat dissipation cavity (21), and the heat dissipation holes (22) communicate with the outside space.

2. The general hub motor for an electric motorcycle according to claim 1, wherein, The motor (13) is connected to an output shaft (14). A wheel (15) is fixedly sleeved on the output shaft (14). A cavity (16) with an opening facing outward is opened in the wheel (15). The mounting shell (11) is located in the cavity (16). A tire (17) is sleeved on the wheel (15).

3. The general hub motor for an electric motorcycle according to claim 2, characterized in that, Both ends of the output shaft (14) are connected with a connecting mechanism (3). The connecting mechanism (3) includes a U-shaped connecting frame (31). A fixing frame (32) is fixedly connected to one side of the connecting frame (31). The fixing frame (32) is fixedly connected to the motor (13), and the connecting frame (31) is connected to the vehicle body.

4. The general hub motor for an electric motorcycle according to claim 3, characterized in that, The power mechanism (1) further includes a brake disc (18) fixedly sleeved on the output shaft (14). A brake module (19) is fixedly connected to the connecting frame (31), and the brake module (19) clamps the brake disc (18).

5. The general hub motor for an electric motorcycle according to claim 4, wherein, The heat dissipation mechanism (2) further includes an air inlet member (23) arranged in the mounting shell (11). The air inlet member (23) includes an air inlet (231) opened on the mounting shell (11). The air inlet (231) communicates with the outside space. A guiding cavity (232) is opened in the mounting shell (11). The air inlet (231) communicates with the guiding cavity (232). A communicating groove (233) is arranged in a communicating way between the guiding cavity (232) and the installation cavity (12). An annular retaining ring (234) is fixedly connected to the mounting shell (11). The retaining ring (234) is rotatably connected to the inner wall of the cavity (16). At least two air outlet openings (235) are evenly arranged along the circumferential direction on the inner wall of the cavity (16), and the air outlet openings (235) communicate with the outside space.

6. The general hub motor for an electric motorcycle according to claim 5, characterized in that, The air inlet member (23) further includes a C-shaped baffle (236) fixedly connected to the retaining ring (234). The baffle (236) is rotatably connected to the inner wall of the cavity (16), and the baffle (236) closes part of the air outlet openings (235).

7. The general hub motor for an electric motorcycle according to claim 6, characterized in that, The air inlet member (23) further includes an electric push rod (237) fixedly connected to the mounting shell (11). The output end of the electric push rod (237) is fixedly connected with a closing plate (238), and the closing plate (238) can close the air outlet openings (235) far away from the communicating groove (233).

8. An electric motorcycle universal hub motor according to claim 7, characterized in that, A guide member (24) is provided on the connecting frame (31). The guide member (24) includes a wind guide plate (241) disposed obliquely. The wind guide plate (241) is located on the side of the air inlet (231) close to the motor (13).

9. The general hub motor for an electric motorcycle according to claim 8, wherein, The guide member (24) further includes an electromagnetic slide rail (242) fixedly connected to the connecting frame (31). An electromagnetic slider (243) is slidably connected in the electromagnetic slide rail (242). The electromagnetic slider (243) is fixedly connected to the wind guide plate (241). A chute (244) with an opening facing the mounting shell (11) is formed in the wind guide plate (241). An extension plate (245) is slidably connected in the chute (244). A spring is connected between the extension plate (245) and the chute (244). The end of the extension plate (245) contacts the mounting shell (11), and the spring is in a compressed state.

10. The general hub motor for an electric motorcycle according to claim 9, wherein The connecting mechanism (3) further includes a through groove (33) formed in the connecting frame (31). The through groove (33) is located on the side of the connecting frame (31) close to the wind guide plate (241).

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