Brushless hub motor for energy-saving electric bicycle

Abstract

The invention is suitable for the technical field of wheel hub motors, and provides a brushless wheel hub motor for an energy-saving electric bicycle, which comprises a wheel hub motor assembly, and one end of the wheel hub motor assembly is clamped with a cover body assembly; the hub motor assembly comprises a hub piece and a stator piece rotationally matched with the hub piece. The brushless hub motor for the energy-saving electric bicycle comprises a hub part and a cover body assembly, the cover body assembly comprises a first cover body part and a second cover body part, the first cover body part is arranged at one end of the hub part in a sleeved and matched mode, and the second cover body part is rotationally connected to the first cover body part in a threaded mode. According to the brushless hub motor for the electric bicycle, the problems that in the working process of the brushless hub motor, hot air in the brushless hub motor is difficult to make full contact with a heat dissipation structure due to the lack of a certain auxiliary heat dissipation structure inside the brushless hub motor, the heat dissipation performance is reduced, and the energy-saving effect of the brushless hub motor for the electric bicycle in the using process is reduced to a certain extent are solved.

Description

Technical Field

[0001] The invention relates to the technical field of hub motors, and more specifically, to a brushless hub motor for an energy-saving electric bicycle. Background Art

[0002] An electric bicycle is a mechatronic personal transportation tool that uses batteries as auxiliary energy sources on the basis of ordinary bicycles and is equipped with motors, controllers, batteries, control components such as handlebars and brakes, and display instrument systems. In the process of production and assembly, electric bicycles mostly use hub motors. Hub motor technology is also called in-wheel motor technology. Its biggest feature is that the power, transmission and braking devices are all integrated into the wheel hub, which greatly simplifies the mechanical part of the electric bicycle.

[0003] At present, the brushless hub motors for electric bicycles on the market have the following technical problems during use: During the use of the existing brushless hub motor for electric bicycles, the interior of the brushless hub motor lacks a certain auxiliary heat dissipation structure, resulting in that during the operation of the brushless hub motor, the hot air inside the brushless hub motor is difficult to fully contact the heat dissipation structure of the brushless hub motor, thereby reducing the heat dissipation performance of the entire brushless hub motor during use, and to a certain extent reducing the energy-saving effect of the brushless hub motor for electric bicycles during use. Summary of the invention

[0004] In view of the deficiencies in the prior art, the purpose of the present invention is to provide an energy-saving brushless hub motor for electric bicycles, which can fully contact the internal hot air with a plurality of first arc-shaped heat sinks and a plurality of second arc-shaped fins, thereby increasing the heat dissipation performance of the entire brushless hub motor during use, and the entire heat dissipation process does not require the addition of additional driving energy. The heat dissipation effect during use can be increased by synchronously rotating the hub in the brushless hub motor and the tire arranged on the peripheral side of the hub on the peripheral side of the rotating shaft, thereby achieving a certain energy-saving effect.

[0005] To achieve the above object, the present invention provides the following technical solutions: A brushless hub motor for an energy-saving electric bicycle comprises a hub motor assembly. A cover assembly is clamped at one end of the hub motor assembly.

[0006] The wheel hub motor assembly comprises a wheel hub component and a stator component rotatably engaged with the wheel hub component.

[0007] The cover assembly comprises a first cover member sleeved and fitted on one end of the hub member and a second cover member threadedly connected to the first cover member.

[0008] The hub component includes a hub, a first rotating hole is opened through the inner bottom of the hub, a plurality of first arc-shaped heat sinks distributed in a circular array are embedded in the outer bottom of the hub, a plurality of the first arc-shaped heat sinks penetrate the outer bottom of the hub, and a plurality of the first arc-shaped heat sinks extend upward, a plurality of the first arc-shaped heat sinks are distributed in a vortex shape, and a motor rotor is fixed to the inner wall of the hub.

[0009] The stator component includes a rotating shaft rotatably engaged in the first rotating hole, a motor stator is arranged on the peripheral side of the rotating shaft, two symmetrical limit grooves are opened on the peripheral side of the rotating shaft, and the two limit grooves are plugged and engaged with limit rails, a sliding sleeve that slides on the rotating shaft is fixed between the two limit rails, a missing gear is fixed on the outer peripheral side of the sliding sleeve, a rotating circular plate is fixed on the outer peripheral side of the sliding sleeve on the side of the missing gear, and a missing tooth ring is fixed on one side of the rotating circular plate.

[0010] The present invention is further configured as follows: the first cover body comprises a first cover body, a second arc-shaped fin extending outward is embedded in the top of the first cover body, a plurality of the second arc-shaped fins are distributed in a spiral shape, a second rotating hole rotatably engaged with the rotating shaft is opened through the top of the first cover body, two symmetrical center shafts are fixed at the top of the first cover body below the second arc-shaped fins, the circumferential sides of the two center shafts are rotatably engaged with the first gear, and the first gear is meshed with the missing gear and the missing tooth ring.

[0011] Turbine blades are fixed to the tops of the two first gears below the second arc-shaped fins.

[0012] The present invention is further configured as follows: the outer top of the first cover body is located above the second rotating hole and is connected to an external threaded cylinder.

[0013] The second cover body comprises a second cover body sleeved and fitted outside the first cover body, and the outer top of the second cover body is connected to an internal threaded cylinder threadedly connected to the outer peripheral side of the external threaded cylinder.

[0014] The present invention is further configured as follows: a plurality of first flow grooves are formed through one side of the rotating circular plate.

[0015] A plurality of first heat dissipation slots are formed through the top of the second cover body, and a plurality of second heat dissipation slots are formed through the side surface of the second cover body.

[0016] The present invention is further configured as follows: a first fitting ring is fixed to the bottom of the second cover body, and a plurality of key slots are formed through the top of the first fitting ring.

[0017] A plurality of positioning blocks are fixed on the outer top of the wheel hub, and a plug-in groove is formed through one side of the plurality of positioning blocks.

[0018] The present invention is further configured as follows: a second fitting ring is fixed to the bottom of the first cover body, a plurality of rectangular grooves are penetrated through the outer peripheral side of the second fitting ring, a plurality of displacement grooves respectively connected to the rectangular grooves are opened on the surface of the second fitting ring and the first cover body, a plurality of the rectangular grooves are slidably fitted with plug-in plates, a sliding rod slidably fitted in the displacement groove is fixed to the top of the plug-in plate, and a plurality of the sliding rods are slidably fitted with the key grooves respectively.

[0019] The advantages of the present invention are: 1. The present invention uses the first gears that rotate and cooperate with the two central shafts and the peripheral sides of the two central shafts to synchronously rotate and move relative to each other on the peripheral sides of the missing gear and the missing gear ring, thereby driving the turbine blades fixed on the tops of the two first gears and located below the second arc-shaped fins to synchronously and repeatedly rotate relative to each other, thereby increasing the fluidity of the internal hot air during the operation of the equipment, so that the internal hot air can fully contact with the first arc-shaped heat sinks and the second arc-shaped fins, thereby increasing the heat dissipation performance of the entire brushless hub motor during use, and the entire heat dissipation process does not require the addition of additional driving energy. It only needs to be through the process that the hub of the brushless hub motor and the tire set on the peripheral side of the hub synchronously rotate on the peripheral side of the rotating shaft, so as to increase the heat dissipation effect during its use, which has a certain energy-saving effect to a certain extent and increases the heat dissipation effect of the entire equipment.

[0020] 2. The present invention uses a threaded connection between the internally threaded cylinder and the externally threaded cylinder connected to the outer top of the second cover body, so that the internally threaded cylinder can gradually be in a downward trend on the outer peripheral side of the externally threaded cylinder, and in turn drive a plurality of sliding rods to perform radial mutual contraction movements in a plurality of displacement grooves, and finally drive the plug-in plates fixed at the bottom of the plurality of sliding rods to perform radial mutual contraction movements in a plurality of rectangular grooves penetrated through the outer peripheral side of the second fitting ring, until the plurality of plug-in plates are plugged into the plug-in grooves, thereby completing the installation of the entire first cover body and the second cover body, replacing the original bolt fixed connection method, bringing certain convenience to the installation process of the staff, and facilitating the staff to carry out the later installation.

[0021] 3. The present invention rotates the second cover body in the opposite direction, so that the internal threaded barrel connected to the outer top of the second cover body gradually performs reverse threaded movement on the peripheral side of the external threaded barrel, and thereby gradually reaches a lifted state, thereby driving the first fitting ring fixed at the bottom of the second cover body to gradually move away from the top of the second fitting ring, so that the plurality of sliding rods respectively perform radial movements of mutual expansion inside the plurality of displacement grooves, and finally drive the plug-in plates respectively fixed at the bottom of the plurality of sliding rods to perform radial movements of mutual expansion inside the plurality of rectangular grooves penetrated through the outer peripheral side of the second fitting ring, until the plurality of plug-in plates are removed from the plug-in grooves, thereby completing the detachable process of the entire first cover body and the second cover body, replacing the original disassembly method, bringing certain convenience to the disassembly and maintenance process of the staff, and facilitating the staff to perform later disassembly and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 The present invention is a schematic structural diagram of a brushless hub motor for an energy-saving electric bicycle.

[0023] Figure 2 It is a schematic structural diagram of the hub motor assembly of the present invention.

[0024] Figure 3 It is a schematic diagram of the structure of the cover assembly of the present invention from an upward perspective.

[0025] Figure 4 It is a schematic diagram of the structure of the cover assembly of the present invention from a top view.

[0026] Figure 5 It is a schematic structural diagram of the hub component of the present invention.

[0027] Figure 6 It is a front view of the hub member of the present invention.

[0028] Figure 7 It is a top view of the hub component of the present invention.

[0029] Figure 8 It is a schematic structural diagram of the stator component of the present invention.

[0030] Fig. 9 It is a front view of the stator component of the present invention.

[0031] Fig.10 It is a schematic diagram of the structure of the first cover body of the present invention from a bottom-up perspective.

[0032] Fig.11 It is a schematic diagram of the structure of the first cover body component from a top view of the present invention.

[0033] Fig.12 It is a schematic diagram of the structure of the second cover body of the present invention from a bottom-up perspective.

[0034] Fig.13It is a front view of the second cover body of the present invention.

[0035] In the figure: 1, wheel hub motor assembly; 2, cover assembly; 3, wheel hub member; 4, stator member; 5, first cover member; 6, second cover member; 301, wheel hub; 302, first rotating hole; 303, first arc-shaped heat sink; 304, motor rotor; 305, positioning block; 306, plug-in slot; 307, rotating gear ring; 401, rotating shaft; 402, motor stator; 403, limiting slot; 404, limiting rail; 405, sliding sleeve; 406, missing gear; 407, rotating circular plate; 408, missing Gear ring; 409, first flow groove; 501, first cover body; 502, second arc-shaped fin; 503, second rotating hole; 504, central axis; 505, first gear; 506, turbine blade; 507, external threaded cylinder; 508, second fitting ring; 509, rectangular groove; 510, displacement groove; 511, plug-in board; 512, sliding rod; 601, second cover body; 602, internal threaded cylinder; 603, first heat dissipation groove; 604, second heat dissipation groove; 605, first fitting ring; 606, key groove. DETAILED DESCRIPTION

[0036] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application may be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0037] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0038] In the present invention, unless otherwise specified, the directions used, such as "up" and "down", usually refer to the directions shown in the drawings, or to the vertical, perpendicular or gravity directions; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the drawings; "inside" and "outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directions are not used to limit the present invention.

[0039] For example, see Figure 1-13 , the present invention provides the following technical solutions: A brushless hub motor for an energy-saving electric bicycle, specifically, comprises a hub motor assembly 1, one end of which is clamped with a cover assembly 2; the hub motor assembly 1 comprises a hub member 3 and a stator member 4 rotatably fitted on the hub member 3; the cover assembly 2 comprises a first cover member 5 sleeved and fitted on one end of the hub member 3 and a second cover member 6 threadedly rotatably connected to the first cover member 5; the hub member 3 comprises a hub 301, a first rotating hole 302 is penetrated through the inner bottom of the hub 301, a plurality of first arc-shaped heat sinks 303 distributed in a circumferential array are embedded in the outer bottom of the hub 301, the plurality of first arc-shaped heat sinks 303 penetrate the outer bottom of the hub 301, and the plurality of first arc-shaped heat sinks 303 face The first arc-shaped heat sink 303 is arranged in a spiral shape, and the inner wall of the hub 301 is fixed with a motor rotor 304; the stator member 4 includes a rotating shaft 401 rotatably fitted in the first rotating hole 302, and the motor stator 402 is arranged on the peripheral side of the rotating shaft 401, and two symmetrical limiting grooves 403 are opened on the peripheral side of the rotating shaft 401, and the limiting rails 404 are inserted and matched inside the two limiting grooves 403, and a sliding sleeve 405 that is slidably fitted on the rotating shaft 401 is fixed between the two limiting rails 404, and a missing gear 406 is fixed on the outer peripheral side of the sliding sleeve 405, and a rotating circular plate 407 is fixed on the outer peripheral side of the sliding sleeve 405 on one side of the missing gear 406, and a missing tooth ring 408 is fixed on one side of the rotating circular plate 407; Furthermore, the first cover body member 5 includes a first cover body 501, and a second arc-shaped fin 502 extending outward is embedded in the top of the first cover body 501, and a plurality of second arc-shaped fins 502 are distributed in a spiral shape. A second rotating hole 503 rotatably engaged with the rotating shaft 401 is opened through the top of the first cover body 501, and two symmetrical center shafts 504 are fixed at the top of the first cover body 501 below the second arc-shaped fin 502, and the side surfaces of the two center shafts 504 are rotatably engaged with the first gears 505, and the first gears 505 are meshed with the missing gear 406 and the missing tooth ring 408; the tops of the two first gears 505 are located below the second arc-shaped fin 502 and are fixed with turbine blades 506.

[0040] The specific application of this embodiment 1 is: When the entire brushless hub motor is installed and fixed on the electric bicycle frame, the hub 301 in the brushless hub motor and the tire arranged on the side surface of the hub 301 rotate synchronously on the side surface of the rotating shaft 401 (the driving method of the hub 301 and the tire arranged on the side surface of the hub 301 is the existing technology and will not be elaborated on here). When the hub 301 and the tire arranged on the side surface of the hub 301 rotate synchronously on the side surface of the rotating shaft 401, the first cover body member 5 detachably connected and fixed to one end surface of the hub 301 rotates synchronously with the hub 301 and the tire arranged on the side surface of the hub 301. When the first cover body member 5 detachably connected and fixed to one end surface of the hub 301 rotates synchronously with the hub 301 and the tire arranged on the side surface of the hub 301, the two central shafts 504 fixed at the top of the first cover body 501 below the second arc-shaped fin 502 and the side surfaces of the two central shafts 504 rotate respectively. The first gear 505 that is dynamically matched rotates and moves synchronously on the peripheral side surfaces of the missing gear 406 and the missing gear ring 408, thereby driving the turbine blades 506 respectively fixed on the top of the two first gears 505 and located below the second arc-shaped fins 502 to rotate synchronously and repeatedly relative to each other, thereby increasing the fluidity of the internal hot air during the operation of the device, so that the internal hot air can fully contact with the first arc-shaped heat sinks 303 and the second arc-shaped fins 502, thereby increasing the heat dissipation performance of the entire brushless hub motor during use, and the entire heat dissipation process does not require the addition of an additional driving source, and only requires the wheel hub 301 in the device and the tire set on the peripheral side surface of the wheel hub 301 to synchronously rotate on the peripheral side surface of the rotating shaft 401, so as to increase the heat dissipation effect during its use, which has a certain energy-saving effect to a certain extent and increases the heat dissipation effect of the entire brushless hub motor; During operation and use of the brushless hub motor, the turbine-shaped design of the first arc-shaped heat sinks 303 and the second arc-shaped fins 502 can, to a certain extent, generate centrifugal force through the synchronous rotation of the wheel hub 301 and the tires arranged on the side surfaces of the wheel hub 301, so that the hot air inside the brushless hub motor is absorbed and dissipated along the direction of the first arc-shaped heat sinks 303 and the second arc-shaped fins 502, further accelerating the heat dissipation effect of the entire brushless hub motor during use, and achieving a certain energy-saving effect.

[0041] For example 2, please refer to Figure 1-13, the second embodiment makes the following improvements on the basis of the first embodiment. Specifically, the outer top of the first cover body 501 is located above the second rotating hole 503 and is connected to an external threaded cylinder 507; the second cover body 6 includes a second cover body 601 sleeved and fitted outside the first cover body 501, and the outer top of the second cover body 601 is connected to an internal threaded cylinder 602 threadedly connected to the outer peripheral side of the external threaded cylinder 507; a plurality of first flow grooves 409 are penetrated on one side of the rotating circular plate 407; a plurality of first heat dissipation grooves 603 are penetrated on the outer top of the second cover body 601, and a plurality of second heat dissipation grooves 604 are penetrated on the outer peripheral side of the second cover body 601; a first fitting ring 605 is fixed on the bottom of the second cover body 601, and the first A plurality of key slots 606 are formed through the top of the fitting ring 605; a plurality of positioning blocks 305 are fixed to the outer top of the wheel hub 301, and a plug-in slot 306 is formed through one side of the plurality of positioning blocks 305; a second fitting ring 508 is fixed to the bottom of the first cover body 501, and a plurality of rectangular slots 509 are formed through the outer peripheral side of the second fitting ring 508; a plurality of displacement slots 510 respectively connected to the rectangular slots 509 are formed on the surfaces of the second fitting ring 508 and the first cover body 501, and plug-in plates 511 are slidably fitted inside the plurality of rectangular slots 509, and a sliding rod 512 slidably fitted inside the displacement slot 510 is fixed to the top of the plug-in plate 511, and the plurality of sliding rods 512 are slidably fitted with the key slots 606 respectively.

[0042] The specific application of this second embodiment is: When installing the brushless hub motor, the two ends of the rotating shaft 401 are fixedly installed on the bottom of the electric bicycle frame in sequence, so that it can provide a certain power source for the walking process of the electric bicycle in the later stage. When the entire brushless hub motor is installed, the motor stator 402 in the brushless hub motor is powered on, and the motor stator 402 can drive the motor rotor 304 to rotate. The motor rotor 304 drives the wheel hub 301 and the tire arranged on the outer peripheral side thereof to rotate around the outer periphery of the motor stator 402 (the motor rotor 304 rotates relative to the motor stator 402 in the magnetic field, and the rotating shaft 401 and the motor stator 402 are relatively stationary to provide the motor stator 402 with a rotating magnetic field. The process of the motor stator 402 driving the motor rotor 304 to rotate is a prior art and will not be elaborated on here), and finally the wheel hub 301 arranged on the rotating shaft 401 and the tire arranged on the outer peripheral side thereof rotate circumferentially relative to the entire electric bicycle frame, thereby realizing the walking process of the entire electric bicycle; During the assembly process of the brushless hub motor described above, after the internal structure of the entire brushless hub motor is assembled, the externally threaded barrel 507 connected to the first cover body 501 is firstly slidably sleeved onto the peripheral side surface of the rotating shaft 401 until the bottom of the second fitting ring 508 fits with the outer top of the hub 301, and then the internally threaded barrel 602 connected to the outer top of the second cover body 601 is threadedly connected to the outer peripheral side surface of the externally threaded barrel 507, so that the internally threaded barrel 602 can gradually be in a downward trend on the outer peripheral side surface of the externally threaded barrel 507 (when the internally threaded barrel 602 gradually tends to descend on the outer peripheral side surface of the externally threaded barrel 507, its plurality of sliding rods 512 are respectively and sequentially slidably arranged inside the plurality of key grooves 606, and during the entire sliding process, the height of the sliding rod 512 is long enough to ensure that the internally threaded barrel 602 is in contact with the outer peripheral side surface of the externally threaded barrel 507 at the beginning When the threaded rods 512 are rotated and descended, the plurality of sliding rods 512 are respectively slidably arranged in the plurality of key slots 606 in turn, and respectively drive the plurality of sliding rods 512 to perform radial mutual contraction movement in the plurality of displacement slots 510, and finally drive the plug-in plates 511 respectively fixed at the bottom of the plurality of sliding rods 512 to perform radial mutual contraction movement in the plurality of rectangular slots 509 penetrating the outer peripheral side of the second fitting ring 508, until the plurality of plug-in plates 511 are plugged into the inside of the plug-in slots 306, and the first fitting ring 605 fixed at the bottom of the second cover body 601 and the second fitting ring 508 fixed at the bottom of the first cover body 501 are in a mutually fitting state, thereby completing the installation process of the entire first cover body 501 and the second cover body 601, replacing the original bolt fixing connection method, bringing certain convenience to the installation process of the staff, and facilitating the staff to carry out the later installation; When the internal structure of the entire device needs to be cleaned, repaired or replaced, the second cover body 601 is rotated in the reverse direction, so that the internal threaded tube 602 connected to the outer top of the second cover body 601 gradually moves in the reverse direction on the peripheral side of the external threaded tube 507, and thereby gradually reaches a lifted state, thereby driving the first fitting ring 605 fixed at the bottom of the second cover body 601 to gradually move away from the top of the second fitting ring 508. When the first fitting ring 605 fixed at the bottom of the second cover body 601 gradually moves away from the top of the second fitting ring 508, the internal threaded tube 602 rotates in the reverse direction on the peripheral side of the external threaded tube 507, driving the plurality of sliding rods 512 to move in the plurality of displacement grooves 510 respectively. The mutually expanding radial movement eventually drives the plug-in plates 511 fixed at the bottom of the sliding rods 512 to perform mutually expanding radial movement inside the rectangular grooves 509 penetrated through the outer peripheral side of the second fitting ring 508, until the plug-in plates 511 are removed from the plug-in grooves 306, and the first fitting ring 605 fixed at the bottom of the second cover body 601 and the second fitting ring 508 fixed at the bottom of the first cover body 501 are in a state of separation from each other, thereby completing the entire detachable process of the first cover body 501 and the second cover body 601, replacing the original disassembly method, bringing certain convenience to the disassembly and maintenance process of the staff, and facilitating the staff to carry out subsequent disassembly and maintenance.

[0043] Obviously, the above-described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0044] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0045] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0046] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

[0047] The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A brushless hub motor for an energy-saving electric bicycle, comprising a hub motor assembly (1), characterized in that: A cover assembly (2) is clamped and provided at one end of the hub motor assembly (1); The wheel hub motor assembly (1) comprises a wheel hub component (3) and a stator component (4) rotatably engaged with the wheel hub component (3); The cover assembly (2) comprises a first cover member (5) sleeved and fitted on one end of the hub member (3) and a second cover member (6) threadedly connected to the first cover member (5); The hub member (3) comprises a hub (301), a first rotating hole (302) is formed through the inner bottom of the hub (301), a plurality of first arc-shaped heat sinks (303) distributed in a circumferential array are embedded in the outer bottom of the hub (301), the plurality of first arc-shaped heat sinks (303) penetrate the outer bottom of the hub (301), and the plurality of first arc-shaped heat sinks (303) extend upward, the plurality of first arc-shaped heat sinks (303) are distributed in a vortex shape, and a motor rotor (304) is fixed to the inner wall of the hub (301); The stator component (4) comprises a rotating shaft (401) rotatably engaged in the first rotating hole (302); a motor stator (402) is arranged on the peripheral side of the rotating shaft (401); two symmetrical limiting grooves (403) are opened on the peripheral side of the rotating shaft (401); limiting rails (404) are inserted and engaged in the two limiting grooves (403); a sliding sleeve (405) slidably engaged on the rotating shaft (401) is fixed between the two limiting rails (404); a missing gear (406) is fixed on the outer peripheral side of the sliding sleeve (405); a rotating circular plate (407) is fixed on the outer peripheral side of the sliding sleeve (405) on one side of the missing gear (406); and a missing tooth ring (408) is fixed on one side of the rotating circular plate (407).

2. The brushless hub motor for an energy-saving electric bicycle according to claim 1, characterized in that: The first cover member (5) comprises a first cover (501), wherein a second arc-shaped fin (502) extending outward is embedded in the top of the first cover (501), and a plurality of the second arc-shaped fins (502) are distributed in a spiral shape.

3. The brushless hub motor for an energy-saving electric bicycle according to claim 2, characterized in that: A second rotating hole (503) rotatably engaged with the rotating shaft (401) is formed through the top of the first cover body (501); two symmetrical central shafts (504) are fixed to the top of the first cover body (501) below the second arc-shaped fin (502); first gears (505) are rotatably engaged with the side surfaces of the two central shafts (504); the first gears (505) are meshed with the missing gear (406) and the missing gear ring (408); Turbine blades (506) are fixed to the tops of the two first gears (505) below the second arc-shaped fins (502).

4. The brushless hub motor for an energy-saving electric bicycle according to claim 3, characterized in that: The outer top of the first cover body (501) is located above the second rotating hole (503) and is connected to an external threaded cylinder (507); The second cover body (6) comprises a second cover body (601) sleeved and fitted on the outside of the first cover body (501), and the outer top of the second cover body (601) is connected to an internal threaded cylinder (602) threadedly connected to the outer peripheral side of the external threaded cylinder (507).

5. The brushless hub motor for an energy-saving electric bicycle according to claim 4, characterized in that: A plurality of first flow slots (409) are formed through one side of the rotating circular plate (407); A plurality of first heat dissipation slots (603) are provided through the top of the second cover body (601), and a plurality of second heat dissipation slots (604) are provided through the side surface of the outer periphery of the second cover body (601).

6. The brushless hub motor for an energy-saving electric bicycle according to claim 5, characterized in that: A first fitting ring (605) is fixed to the bottom of the second cover body (601), and a plurality of key slots (606) are formed through the top of the first fitting ring (605); A plurality of positioning blocks (305) are fixed to the outer top of the wheel hub (301), and a plug-in slot (306) is provided through one side of each of the plurality of positioning blocks (305).

7. The brushless hub motor for an energy-saving electric bicycle according to claim 6, characterized in that: A second fitting ring (508) is fixed to the bottom of the first cover body (501), a plurality of rectangular grooves (509) are penetrated through the outer peripheral side surface of the second fitting ring (508), and a plurality of displacement grooves (510) respectively connected to the rectangular grooves (509) are formed on the surfaces of the second fitting ring (508) and the first cover body (501).

8. The brushless hub motor for an energy-saving electric bicycle according to claim 7, characterized in that: A plug-in plate (511) is slidably fitted inside a plurality of the rectangular grooves (509), a sliding rod (512) slidably fitted inside the displacement groove (510) is fixed on the top of the plug-in plate (511), and a plurality of the sliding rods (512) are slidably fitted with the key grooves (606) respectively.

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