E-bike two-gear electric drive power assisting method

Abstract

According to the E-bike two-gear electric drive assisting method, a motor, a planet wheel system and a shell are arranged in an electric drive assembly, the two ends of the planet wheel system are fixedly connected to a frame, the two ends of a spoke of a rear wheel are connected with the shell and a rim respectively, and a motor control unit is connected with the motor through a wire; a gear shifting button is arranged at a handle of the E-bike, the gear shifting button is connected with a motor control unit through a wire, a motor is started to rotate by manually switching the gear shifting button, or a torque sensor is arranged in an electric drive assembly to automatically monitor the torque value of a shell, and a threshold value is set in the torque sensor; the torque sensor is connected with the motor control unit through a wire, so that the planet wheel system, the shell and the rear wheel are sequentially driven by the motor to rotate, and manpower is saved. A power-assisted electric drive device and a manual or automatic gear shifting device are installed on the bicycle, a motor drives a planet wheel system and a reverse shell belt rear wheel to rotate, two-gear speed change is achieved through forward and reverse rotation of the motor, and the bicycle can be used in traveling, mountaineering and other occasions.

Description

Technical Field

[0001] The invention relates to a bicycle power-assisting method, and in particular to a two-speed electric drive power-assisting method for an E-bike. Background Art

[0002] With the advancement of environmental protection concepts, E-bikes are increasingly becoming the preferred means of transportation for people's daily travel in Europe and the United States. Limited by the space size of the bicycle structure, it seems difficult to meet the user's needs for comfort, lightness, high speed, high torque and low energy consumption at the same time. Chinese patent CN 207634627 U discloses a two-speed transmission for automobiles, including a one-way clutch, a dry clutch, a motor and a reducer. The scheme realizes shifting through a planetary gear train, a one-way clutch and a dry clutch, but the structure takes up space, the reduction ratio is small, and the torque increase is not high. Chinese patent CN 210235231U discloses a two-wheeled vehicle transmission with a parallel shaft structure of double one-way bearings, including two one-way bearings and a number of gear pairs. The scheme realizes shifting through the forward and reverse installation of two one-way bearings and the forward and reverse rotation of the input shaft, but the input and output are not arranged on the same axis, and the length direction takes up a lot of space. Under the same number of teeth, the reduction ratio is lower than that of the planetary gear train structure, and the gear structure is made of conventional materials and conventional gears, and the noise is difficult to reach a better level. Summary of the invention

[0003] The technical problem to be solved by the present invention is: how to set an electrically driven power-assisting system on a bicycle to help the rider to climb mountains and go off-road in a manual or automatic manner.

[0004] In view of the above problems, the technical solution proposed by the present invention is: a two-speed electric drive power assist method for an E-bike, wherein a motor, a planetary gear system and a housing are arranged in an electric drive assembly, the two ends of the planetary gear system are fixedly connected to the frame, the two ends of the spokes of the rear wheel are respectively connected to the housing and the rim, and the motor control unit is connected to the motor through a wire; a shift button is arranged on the handle of the E-bike, the shift button is connected to the motor control unit through a wire, and the motor is started to rotate by manually switching the shift button, so that the motor drives the planetary gear system, the housing and the rear wheel to rotate in turn, thereby saving manpower.

[0005] Preferably, three gears are set in the shift button: OFF gear, first gear and second gear; when the manual shift button is in OFF gear, the shift button is disconnected from the motor control unit, and the motor is powered off and stops working; when the manual shift button is in 1st gear, only the 1st gear of the shift button is connected to the motor control unit, and the forward rotation of the motor drives the rear wheels to rotate; when the manual shift button is in 2nd gear, only the 2nd gear of the shift button is connected to the motor control unit, and the reverse rotation of the motor drives the rear wheels to rotate.

[0006] A two-speed electric drive power assist method for an E-bike comprises: a motor, a planetary gear system and a housing are arranged in an electric drive assembly; two ends of the planetary gear system are fixedly connected to a frame; two ends of a spoke of a rear wheel are respectively connected to the housing and a wheel rim; a motor control unit is connected to the motor via a wire; a torque sensor is arranged in the electric drive assembly to automatically monitor the torque value of the housing; a threshold is set in the torque sensor; the torque sensor is connected to the motor control unit via a wire; when the torque sensor monitors that the torque value of the housing is greater than the threshold, the motor control unit automatically starts the motor to drive the rear wheel to rotate, thereby saving manpower.

[0007] Preferably, threshold 1 and threshold 2 are provided in the torque sensor, and the value of threshold 2 is greater than the value of threshold 1; when the torque sensor monitors that the torque value of the shell is less than threshold 1, the torque sensor sends an interrupt signal to the motor control unit, and the motor is powered off and stops working; when the torque sensor monitors that the torque value of the shell is greater than or equal to threshold 1 and less than threshold 2, the torque sensor sends a first gear signal to the motor control unit, and the motor control unit controls the motor to rotate forward, and the motor drives the planetary gear system, the shell and the rear wheel to rotate in turn; when the torque sensor monitors that the torque value of the shell is greater than or equal to threshold 2, the torque sensor sends a second gear signal to the motor control unit, and the motor control unit controls the motor to rotate reversely, and the motor drives the planetary gear system, the shell and the rear wheel to rotate in turn.

[0008] Preferably, a first-stage sun gear, a first-stage planetary gear and a first-stage ring gear are arranged in the planetary gear system, one end of the first-stage sun gear is connected to the rotating shaft of the motor, the first-stage sun gear is cooperatively connected to the first-stage planetary gear gear, and the outer side of the first-stage planetary gear is also cooperatively connected to the first-stage ring gear gear; a second-stage planetary gear, a first-stage frame wheel shaft and a second-stage ring gear are also arranged in the planetary gear system, the first-stage planetary gear is sleeved on the front end of the first-stage frame wheel shaft, the outer side of the rear end of the first-stage frame wheel shaft is cooperatively connected to the second-stage planetary gear gear, and the outer side of the second-stage planetary gear is also cooperatively connected to the second-stage ring gear gear.

[0009] Preferably, the planetary gear system is also provided with a third-stage planetary gear, a secondary frame wheel shaft and a third-stage ring gear. The second-stage planetary gear is sleeved on the front end of the secondary frame wheel shaft, and the outer side of the rear end of the secondary frame wheel shaft is matched and connected with the third-stage planetary gear; the third-stage planetary gear is sleeved on the front end of the outer shaft second, and the outer side of the third-stage planetary gear is also matched and connected with the third-stage ring gear.

[0010] Preferably, the one-way bearing includes one-way bearing one and one-way bearing two, one-way bearing one is mounted on the third-stage gear ring, and one-way bearing two is mounted on the second-stage frame wheel axle; the housing includes a front housing and a rear housing, the front housing is mounted on the one-way bearing two, and the rear housing is mounted on the one-way bearing one.

[0011] Preferably, when the motor rotates forward, the motor's rotating shaft drives the first-stage sun gear, the first-stage planetary gear, the first-stage frame wheel shaft, the second-stage planetary gear, and the second-stage frame wheel shaft to rotate in sequence; the second-stage frame wheel shaft drives the one-way bearing two, the front housing, the rear housing, and the spokes to rotate, thereby allowing the rear wheel to rotate; at the same time, the second-stage frame wheel shaft also drives the third-stage planetary gear, the third-stage gear ring, and the one-way bearing one to rotate in sequence, and at this time, the one-way bearing one is in a reverse slipping state.

[0012] Preferably, when the motor reverses, the motor's rotating shaft drives the first-stage sun gear, the first-stage planetary gear, the first-stage frame wheel shaft, the second-stage planetary gear, and the second-stage frame wheel shaft to rotate in sequence; the second-stage frame wheel shaft drives the one-way bearing two to rotate, at this time, the one-way bearing two is in a reverse slipping state; at the same time, the second-stage frame wheel shaft also drives the third-stage planetary gear, the third-stage ring gear, the one-way bearing one, the front housing, the rear housing, and the spokes to rotate in sequence, thereby allowing the rear wheel to rotate.

[0013] Preferably, when the motor stops working, the chuck, chain, flywheel, housing and spokes are driven to rotate in sequence by human power stepping on the pedals of the E-bike, thereby causing the rear wheel to rotate.

[0014] The beneficial technical effects of the present invention are: 1. By installing a power-assisted electric drive device and a manual or automatic gear shifting device on the bicycle, the motor drives the planetary gear system and the anti-shell belt to rotate the rear wheel, and the motor rotates forward and reverse to achieve two-speed shifting, which can be used in travel, mountaineering and other occasions.

[0015] 2. It adopts three planetary gear trains, two one-way bearings and one motor design layout, with compact structure, reduction ratios of 13.03 and 52.73 respectively, and a wide torque increase range.

[0016] 3. The reducer housing is directly connected to the rear flywheel, and is driven by a three-stage planetary gear train and a motor. Two one-way bearings are used to transmit and separate power, which can achieve infinitely variable speeds. The motor automatically intervenes to provide power, and the riding experience of a bicycle is retained. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a first-gear power assist flow chart of Embodiment 1; Figure 2 This is a second-gear power-assisting flow chart of Embodiment 1; Figure 3 is a cross-sectional schematic diagram of the electric drive assembly of the first embodiment; In the figure: stator 1, rotor 2, bearing 3, outer shaft 1 4, rotating shaft 6, primary sun gear 7, primary planetary gear 10, primary frame axle 11, frame 15, secondary planetary gear 16, tertiary planetary gear 18, secondary frame axle 19, outer shaft 2 20, tertiary gear ring 21, rear housing 22, one-way bearing 1 23, one-way bearing 2 26, secondary gear ring 27, primary gear ring 28, front housing 29. DETAILED DESCRIPTION

[0018] The present invention will be further described below in conjunction with embodiments and drawings: Embodiment 1

[0019] like Figure 3 As shown, the electric drive assembly includes a motor, a planetary gear system, a one-way bearing 3 and a housing. The housing includes a front housing 29 and a rear housing 22, and the front housing 29 and the rear housing are fixed together with bolts and rotate together. The motor is provided with a stator 1, a rotor 2 and a rotating shaft 6, and the front end of the motor is provided with an outer shaft 1 4, which is formed by the motor end cover and a cylindrical shaft, and the cylindrical shaft extends out of the front end of the front housing 29. The outer shaft 20 is formed by a three-stage planetary carrier and a cylindrical shaft, and the cylindrical shaft of the outer shaft 20 extends out of the rear end of the rear housing 22. A bearing 3 is provided between the front housing 29 and the outer shaft 1 4, and a bearing 3 is provided between the rear housing 22 and the outer shaft 2 20, so that the front housing 29 and the rear housing 22 can rotate relative to the outer shaft 1 4 and the outer shaft 2 20 respectively.

[0020] The planetary gear system includes a primary sun gear 7, a primary planetary gear 10, a primary ring gear 28, a secondary planetary gear 16, a primary carrier axle 11, a secondary ring gear 27, a tertiary planetary gear 18, a secondary carrier axle 19 and a tertiary ring gear 21. The primary carrier axle 11 is formed by integrating the primary planetary carrier and the secondary sun gear, and the secondary carrier axle 19 is formed by integrating the secondary planetary carrier and the tertiary sun gear. One end of the primary sun gear 7 is connected to the rotating shaft 6 of the motor, the primary sun gear 7 is connected to the primary planetary gear 10 by gear matching, and the outer side of the primary planetary gear 10 is also connected to the primary ring gear 28 by gear matching. The first-stage planetary gear 10 is sleeved on the front end of the first-stage frame wheel shaft 11, and the outer side of the rear end of the first-stage frame wheel shaft 11 is connected with the gear of the second-stage planetary gear 16, and the outer side of the second-stage planetary gear 16 is also connected with the gear of the second-stage ring gear 27. The second-stage planetary gear 16 is sleeved on the front end of the second-stage frame wheel shaft 19, and the outer side of the rear end of the second-stage frame wheel shaft 19 is connected with the gear of the third-stage planetary gear 18; the third-stage planetary gear 18 is sleeved on the front end of the outer shaft 20, and the outer side of the third-stage planetary gear 18 is also connected with the gear of the third-stage ring gear 21.

[0021] The one-way bearing 3 includes a one-way bearing 1 23 and a one-way bearing 2 26. The one-way bearing 1 23 is sleeved on the third-stage gear ring 21, and the one-way bearing 26 is sleeved on the second-stage frame axle 19. The frame 15 is sleeved on the motor, the first-stage gear ring 28 and the second-stage gear ring 27. The front housing 29 is sleeved on the bearing 3, the bearing 3 is sleeved on the frame 15, and the front housing 29 is also sleeved on the one-way bearing 2 26. The rear housing 22 is sleeved on the one-way bearing 1 23.

[0022] like Figures 1 to 3 As shown, a motor, a planetary gear system and a housing are arranged in the electric drive assembly. In this embodiment, the outer shaft 1 4 and the outer shaft 2 20 are fixed on the frame at the rear wheel of the bicycle, and the spokes are installed on the front housing 29 and the rear housing 22 of the electric drive assembly, and the other end of the spoke is installed on the wheel rim of the bicycle. The outer shaft 1 4 and the outer shaft 2 20 at both ends of the planetary gear system are fixedly connected to the frame, and the motor control unit is connected to the motor through a wire, and the motor drives the planetary gear system, the one-way bearing 3, the front housing 29 or the rear housing 22 to drive the rear wheel of the bicycle to rotate. Among them, the motor control unit is a single-chip microcomputer, which controls the forward and reverse rotation of the motor through a program. A shift button is arranged at the handle of the E-bike, and the shift button is connected to the motor control unit through a wire. The motor is started to rotate by manually switching the shift button, so that the motor drives the planetary gear system, the housing and the rear wheel to rotate in sequence, saving manpower.

[0023] The shift button is set to three gears: OFF, first and second. When riding on a flat road with human power, when the rider manually switches the shift button to OFF, the shift button is disconnected from the motor control unit, and the motor is powered off and stops working. At this time, the rider steps on the pedals of the E-bike, and the pedals drive the chuck, chain, flywheel and housing to rotate in turn, and the housing drives the spokes and the rear wheel to rotate.

[0024] When the E-bike rides a steep uphill slope, the rider manually switches the shift button to 1st gear, and the shift button is only connected to the motor control unit in 1st gear. The motor control unit is connected to control the motor to rotate forward, and the motor shaft 6 drives the first-stage sun gear 7, the first-stage planetary gear 10, the first-stage frame wheel shaft 11, the second-stage planetary gear 16, and the second-stage frame wheel shaft 19 to rotate in sequence; the second-stage frame wheel shaft 19 drives the one-way bearing 2 26, the front housing 29, the rear housing 22 and the spokes to rotate, thereby rotating the rear wheel; at the same time, the second-stage frame wheel shaft 19 also drives the third-stage planetary gear 18, the third-stage gear ring 21, and the one-way bearing 1 23 to rotate in sequence. At this time, the one-way bearing 1 23 is in a reverse slipping state.

[0025] When the E-bike rides a very steep uphill slope, or the rider needs to pedal very hard, the rider manually switches the shift button to the 2nd gear, and the shift button is only connected to the motor control unit in the 2nd gear. The motor control unit is connected to control the motor to reverse, and the motor shaft 6 drives the first-stage sun gear 7, the first-stage planetary gear 10, the first-stage frame wheel shaft 11, the second-stage planetary gear 16, and the second-stage frame wheel shaft 19 to rotate in sequence; the second-stage frame wheel shaft 19 drives the one-way bearing 2 26 to rotate, and at this time, the one-way bearing 26 is in a reverse slipping state; at the same time, the second-stage frame wheel shaft 19 also drives the third-stage planetary gear 18, the third-stage gear ring 21, the one-way bearing 1 23, the front housing 29, the rear housing 22 and the spokes to rotate in sequence, thereby rotating the rear wheel.

[0026] In summary, the forward and reverse rotation of the motor will form two gears of the electric drive assembly, and the motor can provide greater torque when it is reversed, so that the bicycle can be ridden on a steeper slope. In this embodiment, when the E-bike is on a steeper slope, it can provide a larger torque to assist by starting the motor to rotate forward, and when the E-bike is on a very steep slope, it can provide a large torque to assist by starting the motor to reverse, thereby improving the riding comfort. Embodiment 2

[0027] like Figures 1 to 3 As shown, the difference between this embodiment and the first embodiment is that in this embodiment, instead of using a shift button and a motor control unit to cooperate with manual shifting, automatic shifting is achieved through the cooperation of a torque sensor and a motor control unit. In this embodiment, a torque sensor is set in the electric drive assembly to automatically monitor the torque value of the housing, and a threshold is set in the torque sensor. The torque sensor is connected to the motor control unit by wire. When the torque sensor monitors that the torque value of the housing is greater than the threshold, the motor control unit automatically starts the motor to drive the rear wheel to rotate, saving manpower.

[0028] Threshold 1 and threshold 2 are set in the torque sensor, and the value of threshold 2 is greater than the value of threshold 1. When riding on a flat road by human power, the torque sensor detects that the torque value of the housing is usually less than threshold 1, and the torque sensor sends an interrupt signal to the motor control unit, and the motor is powered off and stops working. At this time, human power steps on the pedals of the E-bike, and the pedals drive the chuck, chain, flywheel and housing to rotate in turn, and the housing drives the spokes and the rear wheel to rotate.

[0029] When the E-bike rides a steep uphill slope, and the torque sensor detects that the torque value of the housing is greater than or equal to threshold 1 and less than threshold 2, the torque sensor sends a first gear signal to the motor control unit. The motor control unit controls the motor to rotate forward, and the motor shaft 6 drives the primary sun gear 7, the primary planetary gear 10, the primary frame wheel shaft 11, the secondary planetary gear 16, and the secondary frame wheel shaft 19 to rotate in sequence; the secondary frame wheel shaft 19 drives the one-way bearing 2 26, the front housing 29, the rear housing 22 and the spokes to rotate, thereby rotating the rear wheel; at the same time, the secondary frame wheel shaft 19 also drives the three-stage planetary gear 18, the three-stage gear ring 21, and the one-way bearing 1 23 to rotate in sequence, and at this time, the one-way bearing 1 23 is in a reverse slipping state.

[0030] When the E-bike rides a very steep uphill slope and the torque sensor detects that the torque value of the housing is greater than or equal to threshold value two, the torque sensor sends a second gear signal to the motor control unit, and the motor control unit controls the motor to reverse, and the motor shaft 6 drives the first-stage sun gear 7, the first-stage planetary gear 10, the first-stage frame wheel shaft 11, the second-stage planetary gear 16, and the second-stage frame wheel shaft 19 to rotate in sequence; the second-stage frame wheel shaft 19 drives the one-way bearing two 26 to rotate, and at this time, the one-way bearing two 26 is in a reverse slipping state; at the same time, the second-stage frame wheel shaft 19 also drives the third-stage planetary gear 18, the third-stage gear ring 21, the one-way bearing one 23, the front housing 29, the rear housing 22 and the spokes to rotate in sequence, thereby rotating the rear wheel.

[0031] Obviously, without departing from the principles of the present invention, several improvements or modifications should be considered as within the protection scope of the present invention.

Claims

1. A two-speed electric drive assist method for an E-bike, characterized in that: A motor, a planetary gear system and a housing are arranged in the electric drive assembly, two ends of the planetary gear system are fixedly connected to the frame, two ends of the spokes of the rear wheel are respectively connected to the housing and the rim, and the motor control unit is connected to the motor through a wire; a shift button is arranged on the handle of the E-bike, and the shift button is connected to the motor control unit through a wire, and the motor is started to rotate by manually switching the shift button, so that the motor drives the planetary gear system, the housing and the rear wheel to rotate in turn, thereby saving manpower.

2. A two-speed electric drive assist method for an E-bike according to claim 1, characterized in that: Three gears are set in the shift button: OFF gear, first gear and second gear; when the manual shift button is in OFF gear, the shift button is disconnected from the motor control unit, and the motor is powered off and stops working; when the manual shift button is in 1st gear, only the 1st gear of the shift button is connected to the motor control unit, and the forward rotation of the motor drives the rear wheels to rotate; when the manual shift button is in 2nd gear, only the 2nd gear of the shift button is connected to the motor control unit, and the reverse rotation of the motor drives the rear wheels to rotate.

3. A two-speed electric drive assist method for an E-bike, characterized in that: A motor, a planetary gear system and a housing are arranged in the electric drive assembly, two ends of the planetary gear system are fixedly connected to the frame, two ends of the spokes of the rear wheel are respectively connected to the housing and the rim, and the motor control unit is connected to the motor through wires; a torque sensor is arranged in the electric drive assembly to automatically monitor the torque value of the housing, and a threshold is set in the torque sensor, and the torque sensor is connected to the motor control unit by wires. When the torque sensor monitors that the torque value of the housing is greater than the threshold, the motor control unit automatically starts the motor to drive the rear wheel to rotate, saving manpower.

4. A two-speed electric drive assist method for an E-bike according to claim 2, characterized in that: Threshold 1 and threshold 2 are set in the torque sensor, and the value of threshold 2 is greater than the value of threshold 1; when the torque sensor monitors that the torque value of the shell is less than threshold 1, the torque sensor sends an interrupt signal to the motor control unit, and the motor is powered off and stops working; when the torque sensor monitors that the torque value of the shell is greater than or equal to threshold 1 and less than threshold 2, the torque sensor sends a first gear signal to the motor control unit, and the motor control unit controls the motor to rotate forward, and the motor drives the planetary gear system, the shell and the rear wheel to rotate in turn; when the torque sensor monitors that the torque value of the shell is greater than or equal to threshold 2, the torque sensor sends a second gear signal to the motor control unit, and the motor control unit controls the motor to rotate reversely, and the motor drives the planetary gear system, the shell and the rear wheel to rotate in turn.

5. A two-speed electric drive assist method for an E-bike according to claim 2 or 4, characterized in that: A first-stage sun gear, a first-stage planetary gear and a first-stage ring gear are arranged in the planetary gear system, one end of the first-stage sun gear is connected to the rotating shaft of the motor, the first-stage sun gear is matched with the first-stage planetary gear gear, and the outer side of the first-stage planetary gear is also matched with the first-stage ring gear gear; a second-stage planetary gear, a first-stage frame wheel shaft and a second-stage ring gear are also arranged in the planetary gear system, the first-stage planetary gear is sleeved on the front end of the first-stage frame wheel shaft, the outer side of the rear end of the first-stage frame wheel shaft is matched with the second-stage planetary gear gear, and the outer side of the second-stage planetary gear is also matched with the second-stage ring gear gear.

6. A two-speed electric drive assist method for an E-bike according to claim 5, characterized in that: The planetary gear system is also provided with a three-stage planetary gear, a two-stage frame wheel shaft and a three-stage ring gear. The two-stage planetary gear is sleeved on the front end of the two-stage frame wheel shaft, and the outer side of the rear end of the two-stage frame wheel shaft is matched and connected with the three-stage planetary gear; the three-stage planetary gear is sleeved on the front end of the outer shaft two, and the outer side of the three-stage planetary gear is also matched and connected with the three-stage ring gear.

7. A two-speed electric drive assist method for an E-bike according to claim 6, characterized in that: The one-way bearing comprises one-way bearing 1 and one-way bearing 2, wherein one-way bearing 1 is mounted on the third gear ring and one-way bearing 2 is mounted on the second frame wheel shaft; the housing comprises a front housing and a rear housing, wherein the front housing is mounted on the one-way bearing 2 and the rear housing is mounted on the one-way bearing 1.

8. A two-speed electric drive assist method for an E-bike according to claim 7, characterized in that: When the motor rotates forward, the motor shaft drives the first-stage sun gear, the first-stage planetary gear, the first-stage frame wheel shaft, the second-stage planetary gear, and the second-stage frame wheel shaft to rotate in sequence; the second-stage frame wheel shaft drives the one-way bearing 2, the front housing, the rear housing and the spokes to rotate, thereby allowing the rear wheel to rotate; at the same time, the second-stage frame wheel shaft also drives the third-stage planetary gear, the third-stage gear ring, and the one-way bearing 1 to rotate in sequence. At this time, the one-way bearing 1 is in a reverse slipping state.

9. A two-speed electric drive assist method for an E-bike according to claim 7, characterized in that: When the motor reverses, the motor shaft drives the first-stage sun gear, the first-stage planetary gear, the first-stage frame wheel shaft, the second-stage planetary gear, and the second-stage frame wheel shaft to rotate in sequence; the second-stage frame wheel shaft drives the one-way bearing two to rotate, and at this time, the one-way bearing two is in a reverse slipping state; at the same time, the second-stage frame wheel shaft also drives the third-stage planetary gear, the third-stage ring gear, the one-way bearing one, the front housing, the rear housing and the spokes to rotate in sequence, thereby making the rear wheel rotate.

10. A two-speed electric drive assist method for an E-bike according to claim 7, characterized in that: When the motor stops working, the chuck, chain, flywheel, housing and spokes are driven in sequence by human power by stepping on the E-bike's pedals, thereby causing the rear wheel to rotate.

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