CN117601994A - Five-way fluted disc type axial power assisting bicycle power device - Google Patents

Five-way fluted disc type axial power assisting bicycle power device Download PDF

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Publication number
CN117601994A
CN117601994A CN202311752046.4A CN202311752046A CN117601994A CN 117601994 A CN117601994 A CN 117601994A CN 202311752046 A CN202311752046 A CN 202311752046A CN 117601994 A CN117601994 A CN 117601994A
Authority
CN
China
Prior art keywords
stator
rotating part
shaft
way
power device
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202311752046.4A
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Chinese (zh)
Inventor
卢稳峰
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shenzhen Hongrui Xingchi Technology Co ltd
Original Assignee
Shenzhen Hongrui Xingchi Technology Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shenzhen Hongrui Xingchi Technology Co ltd filed Critical Shenzhen Hongrui Xingchi Technology Co ltd
Priority to CN202311752046.4A priority Critical patent/CN117601994A/en
Publication of CN117601994A publication Critical patent/CN117601994A/en
Pending legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
    • B62M9/00—Transmissions characterised by use of an endless chain, belt, or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
    • B62M6/00—Rider propulsion of wheeled vehicles with additional source of power, e.g. combustion engine or electric motor
    • B62M6/40—Rider propelled cycles with auxiliary electric motor
    • B62M6/45—Control or actuating devices therefor
    • B62M6/50—Control or actuating devices therefor characterised by detectors or sensors, or arrangement thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
    • B62M6/00—Rider propulsion of wheeled vehicles with additional source of power, e.g. combustion engine or electric motor
    • B62M6/40—Rider propelled cycles with auxiliary electric motor
    • B62M6/60—Rider propelled cycles with auxiliary electric motor power-driven at axle parts
    • B62M6/65—Rider propelled cycles with auxiliary electric motor power-driven at axle parts with axle and driving shaft arranged coaxially

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Dynamo-Electric Clutches, Dynamo-Electric Brakes (AREA)

Abstract

The power device of the five-way fluted disc type axial power-assisted bicycle comprises a power mechanism and a toothed disc, and is characterized in that the toothed disc comprises a fixed part and a rotating part, wherein a bearing is arranged between the fixed part and the rotating part to enable the rotating part to rotate on the fixed part, and a cavity is formed after the fixed part is connected with the rotating part; teeth are arranged on the outer wall of the rotating part; the power device is positioned in the cavity and comprises a stator and a rotor disc; the stator is inlaid on the fixed part; the rotor disc is embedded on the rotating part; the rotor disc and the stator are oppositely arranged, an air gap is formed between the rotor disc and the stator, and a magnetic field generated when the stator is electrified passes through the air gap to interact with the rotor disc so as to push the rotor disc to drive the rotating part to rotate; the disc type driving structure simplifies the installation process, reduces the interference to the bicycle structure, has short axial size and light weight, meets the light weight requirement, is easy to realize high torque density due to the design of the disc type rotor, has higher response speed, and enables riding to be easier.

Description

Five-way fluted disc type axial power assisting bicycle power device
Technical Field
The invention relates to the technical field of power-assisted bicycles, in particular to a five-way fluted disc type axial power-assisted bicycle power device.
Background
In recent years, mountain area booster bicycles are rapidly increased in consumer markets, booster bicycles are mainly driven in an auxiliary mode by a driving motor, motors are usually added to frames, rear wheels or middle shafts of the existing booster bicycles, the existing motor structures are wide, the frames are usually required to be modified or special frames are adopted for installation, the complexity of installation is increased, the production cost is increased, the existing conventional bicycles are large in storage quantity, the common standard is basically adopted for the middle cylinder size of a five-way pipe of the conventional bicycles, and therefore the improvement difficulty of the conventional bicycles is high, and the popularization of an electric booster mode is not facilitated.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a five-way fluted disc type axial power assisting bicycle power device which can effectively solve the problems in the background technology.
In order to solve the problems, the invention adopts the following technical scheme: the power device of the five-way fluted disc type axial power-assisted bicycle comprises a power mechanism and a toothed disc, and is characterized in that the toothed disc comprises a fixed part and a rotating part, wherein a bearing is arranged between the fixed part and the rotating part to enable the rotating part to rotate on the fixed part, and a cavity is formed after the fixed part is connected with the rotating part; the fixing part is arranged on one side of the five-way pipe of the bicycle; teeth are arranged on the outer wall of the rotating part; the power device is positioned in the cavity and comprises a stator and a rotor disc; the stator is inlaid on the fixed part; the rotor disc is embedded on the rotating part; the rotor disc is arranged opposite to the stator in a plane, an air gap is formed between the rotor disc and the stator, and a magnetic field generated when the stator is electrified passes through the air gap to interact with the rotor disc so as to push the rotor disc to drive the rotating part to rotate.
As a further preferable mode of the invention, the fixing part is provided with a cavity, and a controller circuit board is arranged in the cavity; the controller circuit board is electrically connected with the stator.
As a further preferable mode of the invention, the rotating part is provided with a bracket flange; the support flange is connected with the rotating part through bolts, and the support flange is connected with a center shaft of the bicycle through a bearing.
As a further preferable scheme of the invention, the middle shaft of the bicycle is a moment sensing middle shaft; the moment sensing center shaft is arranged in a five-way pipe of the bicycle; the moment sensing center shaft comprises a first shaft barrel and a second shaft barrel; the second shaft cylinder is sleeved in the first shaft cylinder through a spline; the outer wall of the second shaft cylinder is provided with a bearing which is sleeved with the bracket flange; the outer wall of the first shaft cylinder is provided with a one-way bearing which is sleeved with the support flange.
As a further preferable scheme of the invention, the moment sensing center shaft further comprises a center shaft sleeve, and the outer walls of the first shaft cylinder and the bracket flange are respectively provided with a bearing connected with the inner wall of the center shaft sleeve.
As a further preferable scheme of the invention, the middle shaft sleeve is embedded into the five-way pipe and is divided into a sleeve body section and an adjusting section; the sleeve body section is in threaded connection with the adjusting section; the outer wall of the first shaft cylinder is respectively provided with a bearing which is connected with the sleeve body section and the adjusting section; the sleeve body section is connected with the fixing part of the dental tray through bolts.
As a further preferable scheme of the invention, the side wall of the first shaft cylinder is provided with a notch, and a strain gauge is stuck at the notch; the strain gauge is used for sensing deformation between the first shaft cylinder and the second shaft cylinder.
As a further preferable scheme of the invention, a contact ring is sleeved at the notch of the side wall of the first shaft barrel, and the contact ring is provided with a conductive copper ring and is electrically connected with the strain gauge; the side wall of the middle shaft sleeve is embedded with a PCB board, the PCB board is provided with a conductive spring piece and is electrically connected with the conductive copper ring, and the PCB board is connected with the controller circuit board through a wire.
Compared with the prior art, the invention provides the fluted disc type axial power assisting bicycle power device without changing five-way, which has the following beneficial effects:
the invention can be inserted and assembled in a five-way pipe of a frame with general specification on the market, does not need to be matched with a special hanging bracket, can be matched with frames with most specifications on the market, has good adaptability, and is beneficial to the stability and miniaturization of the whole structure.
The tooth disc type driving structure simplifies the installation process, reduces the interference to the bicycle structure, can better keep the original appearance and weight balance of the bicycle, has flat structure, short axial dimension and light weight, meets the light weight requirement, is beneficial to large torque output due to the design of the disc type rotor, is easy to realize high torque density, has axial acting force and higher response speed, and enables riding to be easier.
The induction sensitivity of the strain gauge is improved by adopting a layout mode of double center shafts, meanwhile, the space can be saved, the strain gauge can be embedded into a PCB, the size of the original bicycle five-way pipe can be not changed, and the transformation cost is reduced; replace traditional handle control electric door's mechanism, improve the experience of riding, do not influence the person of riding and to the control of locomotive, avoid the distraction, improve the security of riding.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic diagram illustrating the structural disassembly of the present invention;
FIG. 3 is a split cross-sectional view of the power assisted drive portion;
FIG. 4 is a split cross-sectional view of a human driven portion structure;
FIG. 5 is a fully assembled cross-sectional view of the structure of the present invention;
FIG. 6 is a schematic view of a portion of the structure of the moment center shaft;
wherein: 100. a five-way pipe; 1. a power mechanism; 1-1, a stator; 1-2, rotor disc; 2. a dental tray; 2-1, a fixing part; 2-11, cavity; 2-2, a rotating part; 2-21, teeth; 2-22, a bracket flange; 2-3, chamber; 3. a bearing; 4. a controller circuit board; 5. moment sensing center shaft; 5-1, a first shaft barrel; 5-2, a second shaft cylinder; 5-3, a middle shaft sleeve; 5-31, sleeve body sections; 5-32, adjusting the section; 5-33, an adapter; 6. a spline housing; 7. a one-way bearing; 8. a strain gage; 9. a contact ring; 9-1, a conductive copper ring; 10. a PCB board; 10-1, a conductive spring piece.
Detailed Description
It should be noted that, if a directional indication (such as up, down, left, right, front, and rear … …) is involved in the embodiment of the present invention, the directional indication is merely used to explain the relative positional relationship, movement condition, etc. between the components in a specific posture, and if the specific posture is changed, the directional indication is correspondingly changed.
In addition, if there is a description of "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, if "and/or" and/or "are used throughout, the meaning includes three parallel schemes, for example," a and/or B "including a scheme, or B scheme, or a scheme where a and B are satisfied simultaneously. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present invention.
Referring to fig. 1-6, the invention provides a gear disc type axial power-assisted bicycle power device without changing five-way, which comprises a power mechanism 1 and a toothed disc 2, and is characterized in that the toothed disc 2 comprises a fixed part 2-1 and a rotating part 2-2, wherein a bearing 3 is arranged between the fixed part 2-1 and the rotating part 2-2 to enable the rotating part 2-2 to rotate on the fixed part 2-1, and a cavity 2-3 is formed after the fixed part 2-1 is connected with the rotating part 2-2; the fixing part 2-1 is arranged on one side of the five-way pipe 100 of the bicycle; the outer wall of the rotating part 2-2 is provided with teeth 2-21; the power device is positioned in the chamber 2-3;
the power device comprises a stator 1-1 and a rotor disc 1-2, wherein the stator 1-1 is made of silicon steel sheets or other magnetic permeability materials and has a ring shape or a curved shape, and windings are arranged on the inner side surface of the stator 1-1; the rotor disc 1-2 is planar and made of an electrically conductive material, such as copper or aluminum, and windings may be arranged both above and below the rotor disc 1-2; the stator 1-1 is inlaid on the fixed part 2-1; the rotor disc 1-2 is embedded on the rotating part 2-2; the rotor disc 1-2 is arranged opposite to the stator 1-1 in a plane, an air gap is formed between the rotor disc 1-2 and the stator 1-1, and a magnetic field generated when the stator 1-2 is electrified passes through the air gap to interact with the rotor disc 1-2 so as to push the rotor disc 1-2 to drive the rotating part 2-2 to rotate; the magnetic field runs from the axial direction, so that the magnetic energy density is high, and the space for exchanging energy is also large, so that the torque density of the power mechanism 1 is greatly improved;
the structure is flat, the axial dimension is short, the weight is light, the light-weight requirement of the vehicle is met, the design of the disc rotor is beneficial to large torque output, and the high torque density is easy to realize.
As a further preferable mode of the invention, the fixing part 2-1 is provided with a cavity 2-11, and a controller circuit board 4 is arranged in the cavity 2-11; the controller circuit board 4 is electrically connected with the stator 1-1.
As a further preferable aspect of the present invention, the rotating part 2-2 is provided with a bracket flange 2-22; the bracket flange 2-22 is connected with the rotating part 2-2 through bolts, and the bracket flange 2-22 is connected with a center shaft of the bicycle through a bearing 3.
As a further preferable scheme of the invention, the middle shaft of the bicycle is a moment sensing middle shaft 5; the moment sensing center shaft 5 is arranged in the bicycle five-way pipe 100; the moment sensing center shaft 5 comprises a first shaft barrel 5-1 and a second shaft barrel 5-2; the second shaft barrel 5-2 is arranged in the first shaft barrel 5-1 through a spline housing 6; the outer wall of the second shaft cylinder 5-2 is provided with a bearing 3 which is sleeved with the bracket flange 2-22; the outer wall of the first shaft barrel 5-1 is provided with a one-way bearing 7 which is sleeved with the bracket flange 2-22.
As a further preferable scheme of the invention, the moment sensing center shaft 5 further comprises a center shaft sleeve 5-3, and the outer walls of the first shaft sleeve 5-1 and the bracket flange 2-22 are respectively provided with a bearing 3 which is connected with the inner wall of the center shaft sleeve 5-3.
As a further preferable scheme of the invention, the middle shaft sleeve 5-3 is embedded into the five-way pipe 100, and the middle shaft sleeve 5-3 is divided into a sleeve body section 5-31 and an adjusting section 5-32; the sleeve body section 5-31 is in threaded connection with the adjusting section 5-32; the outer wall of the first shaft barrel 5-1 is respectively provided with a bearing 3 which is connected with the sleeve body section 5-31 and the adjusting section 5-32; the sleeve body section 5-31 is connected with the fixed part 2-1 of the dental tray 2 through bolts.
As a further preferable scheme of the invention, the side wall of the first shaft barrel 5-1 is provided with a notch, and a strain gauge 8 is stuck at the notch; the strain gauge 8 is used for sensing the deformation between the first shaft cylinder 5-1 and the second shaft cylinder 5-2;
when the crank is stepped, the first shaft tube 5-1 and the second shaft tube 5-2 are slightly deformed by the transmission of force, and the larger the induced deformation amount by the strain gauge 8 is, the larger the stepping force is, and the smaller the deformation amount is, the opposite is.
As a further preferable scheme of the invention, a contact ring 9 is sleeved at the notch of the side wall of the first shaft barrel 5-1, and the contact ring 9 is provided with a conductive copper ring 9-1 and is electrically connected with the strain gauge 8; the side wall of the middle shaft sleeve 5-3 is embedded with a PCB 10, the PCB 10 is provided with a conductive spring piece 10-1 and is electrically connected with the conductive copper ring 9-1, and the PCB 10 is connected with the controller circuit board 4 through a wire;
the PCB 10 receives and processes the signals from the strain gauge 8, and then the PCB 10 transmits the signals to the controller circuit board 4 to output power; the induction sensitivity of the strain gauge is improved by adopting a layout mode of double center shafts, meanwhile, the space can be saved, the strain gauge can be embedded into a PCB, the size of an original bicycle five-way pipe can be not changed, and the transformation cost is reduced.
As one embodiment of the present invention, a battery driving part is first installed on an original bicycle; then demolish the axis and the tooth dish of former bicycle, insert this device on original five-way pipe 100 and then can use, when the rider steps on the pedal, the crank atress takes power moment to sense the rotation of axis 5, its effort makes first section of thick bamboo 5-1 and second section of thick bamboo 5-2 atress produce deformation, pass through foil gage 8 response and transmit on PCB board 10 carries out data processing, PCB board 10 passes through the lead-out wire and transmits in the controller of power unit 1, the output of battery drive part is controlled according to foil gage 8's response intensity, thereby reach the motor speed of controlling the helping hand bicycle through detecting the intensity of trampling, only need increase the intensity trample when the rider wants to obtain faster speed of riding obtains the deflection of bigger first section of thick bamboo 5-1, replace traditional handle control electric door's mechanism, improve the experience of riding, avoid the distraction, improve the security of riding.
When the power mechanism 1 receives the sensing signal, an electric current is output to the stator 1-1, and when the electric current passes through the coil of the stator 1-1, a rotating magnetic field is generated, which interacts with the rotor disc 1-2 through the air gap. Due to the relative positional relationship between the stator 1-1 and the rotor disk 1-2, the magnetic fields interact to generate torque that pushes the rotor disk 1-2 to start rotating. The rotational movement of the rotor disk 1-2 converts the electrical energy into mechanical energy, thereby driving the rotating part 2-2 to rotate on the fixed part 2-1, and driving the bicycle through the teeth 2-21.
Standard for five-way on frame: the screw-thread english gauge BSA is one of the most traditional five-way standards, and the screw thread features a positive and a negative, the left is a positive screw thread, the right is a negative screw thread, the left is screwed clockwise, and the right is screwed anticlockwise. The thread outer diameter is 34.79mm, and the tooth pitch is 1.37 x 24TPI. The five-way specification is most common on road and mountain frames sold in the market and has the highest occupancy rate, and the five-way specification can be directly installed on the conventional English BSA five-way specification in the market, and is also the minimum five-way specification at present.
For the five-way pipe installed on other specifications, the application can be realized only by changing the size of the adapter piece 5-33 arranged on the middle shaft sleeve 5-3, so that the diameter of the adapter piece 5-33 corresponds to the diameter of the five-way pipe.
The mounting, setting, arranging or connecting modes include, but are not limited to, mounting, setting or connecting by means of screws, riveting, welding or sleeving, fixing and the like according to the needs, and the mounting, setting or connecting modes are selected according to the needs of working situations.
The foregoing description is only of the preferred embodiments of the present invention and is not intended to limit the scope of the invention, and all equivalent structural changes made by the description of the present invention and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the invention.

Claims (8)

1. The utility model provides a do not change five-way fluted disc type axial booster bicycle power device, includes power unit (1) and tooth dish (2), its characterized in that, tooth dish (2) are including fixed part (2-1) and rotation portion (2-2), be equipped with bearing (3) between fixed part (2-1) and rotation portion (2-2) and connect, make rotation portion (2-2) rotate on fixed part (2-1), form cavity (2-3) after fixed part (2-1) and rotation portion (2-2) are connected; the fixing part (2-1) is arranged on one side of a five-way pipe (100) of the bicycle; the outer wall of the rotating part (2-2) is provided with teeth (2-21); the power device is positioned in the cavity (2-3) and comprises a stator (1-1) and a rotor disc (1-2); the stator (1-1) is inlaid on the fixed part (2-1); the rotor disc (1-2) is embedded on the rotating part (2-2); the rotor disc (1-2) is arranged opposite to the stator (1-1) in a plane shape, an air gap is formed between the rotor disc and the stator (1-1), and a magnetic field generated when the stator (1-2) is electrified passes through the air gap to interact with the rotor disc (1-2) to push the rotor disc (1-2) to drive the rotating part (2-2) to rotate.
2. The gear-type axial power assisted bicycle power device without changing five-way according to claim 1, wherein the fixing part (2-1) is provided with a cavity (2-11), and a controller circuit board (4) is installed in the cavity (2-11); the controller circuit board (4) is electrically connected with the stator (1-1).
3. The unchanged five-way fluted disc type axial power assisted bicycle power device according to claim 1, characterized in that the rotating part (2-2) is provided with a bracket flange (2-22); the bracket flange (2-22) is connected with the rotating part (2-2) through bolts, and the bracket flange (2-22) is connected with a center shaft of the bicycle through a bearing (3).
4. A five-way, toothed disc type axial power assisted bicycle power device according to claim 3, characterized in that the central axle of the bicycle is a torque sensing central axle (5); the moment sensing center shaft (5) is arranged in a bicycle five-way pipe (100); the moment sensing center shaft (5) comprises a first shaft cylinder (5-1) and a second shaft cylinder (5-2); the second shaft cylinder (5-2) is arranged in the first shaft cylinder (5-1) through a spline housing (6); the outer wall of the second shaft cylinder (5-2) is provided with a bearing (3) which is sleeved with the bracket flange (2-22); the outer wall of the first shaft cylinder (5-1) is provided with a one-way bearing (7) which is sleeved with the bracket flange (2-22).
5. The power device of the gear-type axial power-assisted bicycle without changing five-way according to claim 4, wherein the moment sensing center shaft (5) further comprises a center shaft sleeve (5-3), and the outer walls of the first shaft sleeve (5-1) and the bracket flange (2-22) are respectively provided with a bearing (3) which is connected with the inner wall of the center shaft sleeve (5-3).
6. The gear-type axial power assisted bicycle power device without changing the five-way system according to claim 5, wherein the middle shaft sleeve (5-3) is embedded in the five-way pipe (100), and the middle shaft sleeve (5-3) is divided into a sleeve body section (5-31) and an adjusting section (5-32); the sleeve body section (5-31) is in threaded connection with the adjusting section (5-32); the outer wall of the first shaft barrel (5-1) is respectively provided with a bearing (3) which is connected with the sleeve body section (5-31) and the adjusting section (5-32); the sleeve body section (5-31) is connected with the fixing part (2-1) of the dental tray (2) through bolts.
7. The unchanged five-way fluted disc type axial power assisted bicycle power device according to claim 5, characterized in that the side wall of the first shaft tube (5-1) is provided with a notch, and a strain gauge (8) is stuck at the notch; the strain gauge (8) is used for sensing deformation between the first shaft cylinder (5-1) and the second shaft cylinder (5-2).
8. The power device of the gear-type axial power-assisted bicycle without changing five-way according to claim 7, wherein a contact ring (9) is sleeved at a notch of the side wall of the first shaft cylinder (5-1), and the contact ring (9) is provided with a conductive copper ring (9-1) and is electrically connected with the strain gauge (8); the side wall of the middle shaft sleeve (5-3) is embedded with a PCB (10), the PCB (10) is provided with a conductive spring piece (10-1) and is electrically connected with the conductive copper ring (9-1), and the PCB (10) is connected with the controller circuit board (4) through a wire.
CN202311752046.4A 2023-12-19 2023-12-19 Five-way fluted disc type axial power assisting bicycle power device Pending CN117601994A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202311752046.4A CN117601994A (en) 2023-12-19 2023-12-19 Five-way fluted disc type axial power assisting bicycle power device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202311752046.4A CN117601994A (en) 2023-12-19 2023-12-19 Five-way fluted disc type axial power assisting bicycle power device

Publications (1)

Publication Number Publication Date
CN117601994A true CN117601994A (en) 2024-02-27

Family

ID=89956202

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202311752046.4A Pending CN117601994A (en) 2023-12-19 2023-12-19 Five-way fluted disc type axial power assisting bicycle power device

Country Status (1)

Country Link
CN (1) CN117601994A (en)

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