TWM536642U - Chainless differential continuously variable vehicle - Google Patents

Description

Chainless differential stepless bicycle

The present invention relates to a bicycle, and more particularly to a chainless differential stepless bicycle.

Nowadays, the bicycle drives the gear by the pedaling of the pedal, and then the chain transmission connected with the gear causes the rear wheel to move forward by the friction with the road surface, thereby causing the bicycle to move forward. Variable-speed bicycles on the market, the shifting mechanism can only provide segmental shifting, and its pedaling efficiency will change due to shifting and shifting. Because it is driven by mechanical mechanism, it must be sized with the human body. In order to improve the pedaling efficiency, the road bike used in the competition is designed to make the rider lean forward, which may cause pain or even injury to the head and neck, back and back when riding for a long time, and to ensure high-efficiency pedaling. Therefore, the suspension design must be sacrificed to avoid the vertical force applied by the suspension system and wasted, so it also sacrifices the comfort of road bike riding. In addition, due to the small size and hard material of the traditional bicycle seat cushion, long-distance long-distance riding often causes the rider's buttocks or perineum to be oppressed, resulting in poor blood circulation and pain, and even affects the male rider's reproductive system. .

In order to improve the bicycle's many shortcomings as described above, a reclining bicycle has been developed on the market, and the head and neck are supported by the headrest, and the back and hip are naturally seated on the seat cushion to support the human body, which significantly improves the human efficiency. Avoid fatigue and soreness. However, the two-wheel reclining bicycle still has the following problems: (1) Balance is very difficult, not everyone can have enough talent to adapt to riding; (2) In order to match the reclining posture, the pedaling method is limited to stepping forward In order to separate the direction of force and the direction of the shock to reduce energy consumption; and (3) because the front gear is designed to be at the forefront, and the drive is mostly located at the rear wheel, so that the chain is elongated, and the chain friction is increased. Loss reduces pedaling efficiency.

In order to further improve the balance of the two-wheel reclining bicycle, the three-wheel reclining bicycle was born. Because the problem of balance was solved, the three-wheeled reclining bicycle successfully offered another bicycle option for sports and recreation. Common design methods for three-wheel reclining bicycles include: front two-wheel steering (or tilting and steering), rear single-wheel drive, or front single-wheel steering, rear two-wheel drive, and so on. No matter which one, there are still the following shortcomings: (1) With the reclining posture, the pedaling method is limited to stepping forward, so that the direction of the force and the direction of the shock can be opened separately to reduce energy consumption; (2) because In line with the requirements of the reclining posture, in general, the rear wheel drive and the stepping on the front are adopted, so that the chain must be lengthened to increase the transmission loss; (3) The reclining bicycle cannot dynamically adjust the riding posture to convert the pedaling efficiency. For example, when a road car is going uphill, the driver will advance the center of gravity in front of the upper body, and use the weight to match the arm pull to do the pumping action, while the reclining bicycle can not adopt such riding posture, generally it is very difficult to climb up; 4) There is still a step change, most of them rely on multiple gear change ratio to change the pedaling torque; (5) It is impossible to reverse the car, and it cannot be turned in place. It is slightly inconvenient to use in the environment where the parking space is limited.

In view of this, the present invention provides a chainless differential stepless bicycle, which utilizes adjusting the generator torque to change the manual traction stepless shifting mechanism, and distributes the power generated by the generator to each drive according to the demand. The motor on the wheel, in order to achieve the purpose of driving, steering and balancing, abandoning the chain transmission, and independently separating the human traction movement from the movement of the platform, creating a new function design of the new bicycle in terms of driving efficiency, steering control, riding comfort and the like. platform.

One of the objects of the present invention is to provide a chainless differential stepless bicycle, comprising: a vehicle platform (FRAME), and the platform includes an opposite driving end and a free end; a seat cushion is adjustably disposed on the vehicle platform a right drive wheel and a left drive wheel coupled to a bearing and pivotally connected to the two sides of the drive end of the platform by the bearing, and the right drive wheel is driven by a first motor And the left driving wheel is driven by a second motor; at least one free wheel is pivotally connected to the free end of the platform, and the at least one free wheel can be driven by the right driving wheel and/or the left driving wheel Advancing; a power generating unit pivotally connected to the front edge of the seat cushion, and the power generating unit includes a stepping generator; a first control unit coupled to the power generating unit and the first motor And the first control unit can convert the first control signal S1 received by the first control signal S1 to the first torque (τ1) provided to the first motor; and a second control unit coupled to the second control unit Connected between the power generating unit and the second motor And the second control unit may be bidirectional it receives the second control signal S2, to the second converter to provide the torque of the second motor (τ2).

Another object of the present invention is to provide a chainless differential stepless bicycle as described above, wherein when τ1 = τ2 = 0, the chainless differential stepless bicycle is stationary; when τ1, τ2≧ At 0 o'clock, the chainless differential stepless bicycle can travel forward, and when τ1>τ2, the chainless differential stepless bicycle can turn left when traveling forward, when τ2>τ1 The chain-free differential stepless bicycle can turn right when traveling forward. When τ1>τ2=0, the chain-free differential stepless bicycle can be turned to the left, when τ2>τ1 When =0, the chain-free differential stepless bicycle can be rotated to the right; when τ1, τ2≦0, the chain-free differential stepless bicycle can travel backwards, and when │τ1│>│ At τ2│, the chainless differential stepless bicycle can turn right when traveling backwards. When │τ2│>│τ1│, the chainless differential stepless bicycle can be leftward when traveling backwards. Turn, when │τ1│>τ2=0, the chainless differential stepless bicycle can be turned to the right When │τ2│>τ1=0, the chainless differential stepless bicycle can be rotated to the left; when τ1>0, τ2<0, the chainless differential stepless bicycle can be left In situ rotation; when τ1<0, τ2>0, the chainless differential stepless bicycle can be rotated to the right.

Another object of the present invention is to provide a chainless differential stepless bicycle as described above, which includes a permanent magnet generator or a magnet generator.

Another object of the present invention is to provide a chainless differential stepless bicycle as described above, and further comprising a bridge rectifier for rectifying the alternating current generated by the pedal generator to direct current.

Another object of the present invention is to provide a chainless differential stepless bicycle as described above, and further comprising a pair of mains power busbars coupled to the power generating unit, and the first and second bidirectional control units They are respectively connected to the pair of mains power bus bars.

Another object of the present invention is to provide a chainless differential stepless bicycle as described above, the first control unit comprising a one-way or two-way rectifier.

Another object of the present invention is to provide a chainless differential stepless bicycle as described above, the second control unit comprising a one-way or two-way rectifier.

Another object of the present invention is to provide a chainless differential stepless bicycle as described above, wherein the platform further includes a slide rail extending between the drive end and the free end, and the rider can view The requirement is to slide the seat cushion forward and backward along the slide rail to adjust the position.

Another object of the present invention is to provide a chainless differential stepless bicycle as described above, wherein the at least one free wheel is a free wheel that can be arbitrarily changed direction.

Another object of the present invention is to provide a chainless differential stepless bicycle as described above, and further comprising a shock absorber formed between the slide rail and the bearing.

Another object of the present invention is to provide a chainless differential stepless bicycle as described above, and further comprising a direction and hand brake control device disposed on the platform.

Another object of the present invention is to provide a chainless differential stepless bicycle as described above, wherein the main control unit further includes a rider input or selection interface fixed to the vehicle platform or the direction and the hand brake control device. on.

Another object of the present invention is to provide a chainless differential stepless bicycle as described above, wherein the power generating unit includes a first pulse width modulation (PWM) switch that can be issued by the pedal generator The power is converted into a first pulse width modulation signal P1 having a frequency of f1.

Another object of the present invention is to provide a chainless differential stepless bicycle as described above, further comprising a main control unit coupled between the power generating unit and the first bidirectional control unit and the power generating unit And the second bidirectional control unit, and the main control unit includes a second pulse width modulation (PWM) switch, the second pulse width modulation (PWM) switch can be made according to the input demanded by the rider During the first pulse width modulation (PWM) switch being turned on, a second pulse width modulation signal P2 having a frequency of f2 is generated, and the first pulse width modulation signal P1 is allocated to be converted into the first control signal S1 and the first The ratio of the two control signals S2, wherein f1 and f2 are both greater than or equal to 10 Hz, and f1/f2 ≥ 5 or f2/f1 ≥ 5.

Another object of the present invention is to provide another chainless differential stepless bicycle, comprising: a vehicle platform (FRAME), and the platform includes an opposite driving end and a free end; a seat cushion is adjustably disposed on a right driving wheel and a left driving wheel are coupled to a bearing, and are pivotally connected to the two sides of the driving end of the platform by the bearing, and the right driving wheel is first The motor is driven, and the left driving wheel is driven by a second motor; at least one free wheel is pivotally connected to the free end of the platform, and the at least one free wheel can be driven by the right driving wheel and/or the left driving The power generating unit is pivotally connected to the driving end of the vehicle platform, and the power generating unit includes a stepping generator, and a first pulse width modulation signal P1 having a frequency of f1 is generated; a pair of the power generating unit a first-side bidirectional control unit, the first bidirectional control unit is coupled between the power generating unit and the first motor and connected to the pair of mains power bus bars, and the first Two-way control unit can be used The received first control signal S1 is converted into a first torque (τ1) provided to the first motor; a second bidirectional control unit coupled to the power generating unit and the second motor And connected to the pair of mains power bus bars, and the second bidirectional control unit can convert the second control signal S2 received by the second control signal into a second torque (τ2) provided to the second motor a battery module coupled to the power generating unit and connected to the pair of mains power bus bars, wherein the battery module includes a rechargeable battery and a third bidirectional control unit, and the third bidirectional control unit is The battery module is coupled between the power generating unit and the rechargeable battery, and the battery module can be charged by the power generating unit or the first and second motors, or provide power to the first and second motors; The unit is coupled between the power generating unit and the first bidirectional control unit, the second bidirectional control unit, and the battery module, the main control unit includes a second unit, and the main control unit can be used by the rider. Enter the following mode of operation: when When the first mode is operated, the power generating unit can provide a first pulse width modulation signal P1 to the first and second reverse control units under the control of the main control unit to drive the first motor and/or The second motor; when operating in the second mode, the first pulse width modulation signal P1 from the power generating unit can be charged to the third bidirectional control unit under the control of the main control unit Charging the battery; when operating in the third mode, the first and second bidirectional control units are controlled by the main control unit, and the first motor and/or the second motor are respectively outputted in the first and second directions Controlling the signals S1, S2, and further charging the rechargeable battery via the third bidirectional control unit; when operating in the fourth mode, the third bidirectional control unit can be controlled via the main control unit to make the battery module The group reversely provides a first pulse width modulation signal P1 to the first and second reverse control units to drive the first motor and/or the second motor.

Another object of the present invention is to provide a chainless differential stepless bicycle as described above, wherein when τ1 = τ2 = 0, the chainless differential stepless bicycle is stationary; when τ1, τ2≧ At 0 o'clock, the chainless differential stepless bicycle can travel forward, and when τ1>τ2, the chainless differential stepless bicycle can turn left when traveling forward, when τ2>τ1 The chain-free differential stepless bicycle can turn right when traveling forward. When τ1>τ2=0, the chain-free differential stepless bicycle can be turned to the left, when τ2>τ1 When =0, the chain-free differential stepless bicycle can be rotated to the right; when τ1, τ2≦0, the chain-free differential stepless bicycle can travel backwards, and when │τ1│>│ At τ2│, the chainless differential stepless bicycle can turn right when traveling backwards. When │τ2│>│τ1│, the chainless differential stepless bicycle can be leftward when traveling backwards. Turn, when │τ1│>τ2=0, the chainless differential stepless bicycle can be turned to the right When │τ2│>τ1=0, the chainless differential stepless bicycle can be rotated to the left; when τ1>0, τ2<0, the chainless differential stepless bicycle can be left In situ rotation; when τ1<0, τ2>0, the chainless differential stepless bicycle can be rotated to the right.

Another object of the present invention is to provide a chainless differential stepless bicycle as described above, which includes a permanent magnet generator or a magnet generator.

Another object of the present invention is to provide a chainless differential stepless bicycle as described above, and further comprising a bridge rectifier for rectifying the alternating current generated by the pedal generator to direct current.

Another object of the present invention is to provide a chainless differential stepless bicycle as described above, wherein the first control unit includes a first bidirectional rectifier.

Another object of the present invention is to provide a chainless differential stepless bicycle as described above, the second control unit comprising a second bidirectional rectifier.

Another object of the present invention is to provide a chainless differential stepless bicycle as described above, the third control unit comprising a third bidirectional rectifier.

Another object of the present invention is to provide a chainless differential stepless bicycle as described above, wherein the active control unit is assigned from the power generating unit or the battery when operating in the first mode or the fourth mode The first pulse width modulation signal P1 of the module is converted into a ratio of the first control signal S1 and the second control signal S2, and the first control signal S1 and the second control signal S2 are switched to the first , a second bidirectional control unit.

Another object of the present invention is to provide a chainless differential stepless bicycle as described above, wherein the active control unit divides the first pulse width adjustment from the power generating unit when operating in the first mode The first pulse width modulation signal P1 from the power generation unit is converted into a third control signal S3, and the third control signal is converted into a third control signal S3, which is converted into a ratio of the first control signal S1 and the second control signal S2. S3 can be converted to power to charge the rechargeable battery via the third bidirectional control unit.

Another object of the present invention is to provide a chainless differential stepless bicycle as described above, wherein the first and second two-way control units are controllable via the main control unit when operating in the third mode The first motor and/or the second motor respectively output the first and second control signals S1 and S2 in reverse, and then charge the rechargeable battery via the third bidirectional control unit.

Another object of the present invention is to provide a chainless differential stepless bicycle as described above, wherein the platform further includes a slide rail extending between the drive end and the free end, and the rider can view The requirement is to slide the seat cushion forward and backward along the slide rail to adjust the position.

Another object of the present invention is to provide a chainless differential stepless bicycle as described above, wherein the at least one free wheel is a free wheel that can be arbitrarily changed direction.

Another object of the present invention is to provide a chainless differential stepless bicycle as described above, further comprising a shock absorber formed between the slide rail and the bearing.

Another object of the present invention is to provide a chainless differential stepless bicycle as described above, and further comprising a direction and hand brake control device disposed on the platform.

Another object of the present invention is to provide a chainless differential stepless bicycle as described above, wherein the main control unit further includes a rider input or selection interface fixed to the vehicle platform or the direction and the hand brake control device. on.

Another object of the present invention is to provide a chainless differential stepless bicycle as described above, wherein the power generating unit includes a first pulse width modulation (PWM) switch that can be issued by the pedal generator The power is converted into a first pulse width modulation signal P1 having a frequency of f1.

Another object of the present invention is to provide a chainless differential stepless bicycle as described above, wherein the main control unit includes a second pulse width modulation (PWM) switch that can be input according to the rider's input. And causing the second pulse width modulation (PWM) switch to emit a second pulse width modulation signal P2 having a frequency of f2 during the first pulse width modulation (PWM) switch being turned on, thereby allocating the first pulse width The modulation signal P1 is converted into a ratio of the first control signal S1 and the second control signal S2, wherein f1 and f2 are both greater than or equal to 10 Hz, and f1/f2≥5 or f2/f1≥5.

The present invention provides a chainless differential stepless bicycle, which utilizes adjusting the generator torque to change the manual traction stepless shifting mechanism, and distributes the power generated by the generator to the motors on each driving wheel according to the demand. In order to achieve the purpose of driving, steering and balancing, the chain drive is abandoned, and the human traction movement is separated from the movement of the platform independently, creating a new functional design platform for the new bicycle in terms of driving efficiency, steering control, riding comfort and the like. Therefore, the novel chain-free differential stepless bicycle provided by the present invention can have the following advantages: (1) no-segment stepless variable speed drive; (2) proper differential design can be turned or even turned in place; 3) The riding position can be adjusted without loss of pedaling performance; (4) The suspension system can be added to the platform without loss of pedaling performance; and (5) A battery can be added to assist the drive or electric brake to recover kinetic energy.

The manner in which the novel embodiments are made and used will be described in detail below. It should be noted, however, that the present invention provides a number of new concepts that can be applied, which can be implemented in a variety of specific styles. The specific embodiments discussed herein are merely illustrative of specific ways to make and use the present invention and are not intended to limit the scope of the invention.

First, please refer to FIG. 1 , which illustrates a chainless differential stepless bicycle 100 according to an embodiment of the present invention, which includes a vehicle platform (FRAME) 110, and the vehicle platform 110 includes an opposite one. a driving end 110A and a free end 110B; a seat cushion 120 is adjustably disposed on the vehicle platform 110, and the rider can adjust the position along the front and rear of the vehicle platform 110 as needed; a right driving wheel 130A and a left driving wheel 130B, Coupling to a bearing 135, and pivotally connected to both sides of the driving end 110A of the platform 110 by bearings 135, and the right driving wheel 130A is driven by a first motor (M1) 245, while the left driving wheel 130B is Driven by a second motor (M2) 255; a free wheel 130C pivotally connected to the free end 110B of the platform 110, and the free wheel 130C can be driven forward or backward by the right drive wheel 130A and/or the left drive wheel 130B; The power generating unit 210 is pivotally connected to the front edge 120A of the seat cushion 120, and the power generating unit 210 includes a stepping generator 220. A first control unit (not shown) is coupled to the power generating unit 210 and the first motor (M1) 245. Between, and the first control unit (not labeled) can receive the The control signal is converted into a first torque (τ1) provided to the first motor (M1) 245; a second control unit (not shown) is coupled between the power generating unit 210 and the second motor (M2) 255, And the second bidirectional control unit (not labeled) can convert the second control signal received by the second control signal into a second torque (τ2) provided to the second motor (M2) 255; and a main control unit 270, respectively It is coupled between the power generating unit 210 and the first control unit (not labeled) and between the power generating unit 210 and the second control unit (not labeled).

Wherein, when τ1=τ2=0, the chain-free differential stepless bicycle 100 is stationary; when τ1, τ2≧0, the chain-free differential stepless bicycle 100 can travel forward, and when τ1>τ2 At that time, the chainless differential stepless bicycle 100 can turn left when traveling forward. When τ2>τ1, the chainless differential stepless bicycle 100 can turn right when traveling forward, when τ1 >τ2=0, the chain-free differential stepless bicycle 100 can be rotated to the left. When τ2>τ1=0, the chain-free differential stepless bicycle 100 can be turned to the right; when τ1 When τ2≦0, the chain-free differential stepless bicycle 100 can travel backward, and when │τ1│>│τ2│, the chain-free differential stepless bicycle 100 can turn right when traveling backward. When │τ2│>│τ1│, the chainless differential stepless bicycle 100 can turn left when traveling backwards. When │τ1│>τ2=0, the chainless differential stepless bicycle 100 can be Turning to the right, when │τ2│>τ1=0, the chainless differential stepless bicycle 100 can be rotated to the left.

In an embodiment in accordance with the present invention, the freewheel 130C is a freewheel that can be arbitrarily redirected, and one or more freewheels 130C can be pivotally attached to the free end 110B of the platform 110 as desired.

In the embodiment according to the present invention, the platform 110 further includes a slide rail 125 extending between the driving end 110A and the free end 110B, and the rider can make the seat cushion 120 forward or backward along the slide rail 125 according to the needs of the rider. Slide to adjust the position.

In other embodiments according to the present invention, a shock absorber 140, such as a spring, may be formed between the platform 110 and the slide rail 125 to provide proper positioning of the chainless differential stepless bicycle 100 when traveling or retracting. The cushioning force slows down the road and causes the rider to feel uncomfortable. In addition, in other embodiments according to the present invention, a direction or handcart control device 170 fixed to the platform 110 may be further included to enable the rider to conveniently control the chainless differential stepless bicycle 100. Direction of travel or braking. In other embodiments in accordance with the present invention, the main control unit 270 further includes a rider input or selection interface 145 and is secured to the drive end 110A of the adjacent vehicle platform 110 or to the above direction by an adjustable angle fixing rod 150. And the hand brake control device 170.

In order to make the above and other objects, features, and advantages of the present invention more comprehensible, the following embodiments will be described with reference to Figures 2A to 2C and Embodiment 2 in conjunction with Figures 3A to 3D and 4A~. 4B, 5A-5B, and 6A-6B illustrate the present invention. The specific embodiments discussed herein are merely illustrative of specific ways to make and use the present invention and are not intended to limit the scope of the invention. Moreover, repeated numbers or labels may be used in different embodiments. These repetitions are merely for the purpose of simplicity and clarity of the present invention and are not intended to be any limitation of the various embodiments and/or structures discussed. The details will be described below. Embodiment 1

Please refer to FIG. 2A, which is a block diagram of a control system according to the first embodiment of the present invention. As shown in FIG. 2A, the control system 200 of the chainless differential stepless bicycle 100 includes a power generating unit 210 including a stepping generator 220. A first control unit 240 is coupled to the power generating unit. 210 is between the first motor (M1) 245, and the first control unit 240 can convert the first control signal S1 it receives into the first torque (τ1) provided to the first motor (M1) 245. a second control unit 250 coupled between the power generating unit 210 and the second motor (M2) 255, and the second control unit 250 can convert the received second control signal S2 to be provided to the second The second torque (τ2) of the motor (M2) 255; and a main control unit 270 are coupled between the power generating unit 210 and the first control unit 240 and between the power generating unit 210 and the second control unit 250, respectively. The power generating unit 210 further includes a first pulse width modulation (PWM) switch 230, which can output a first pulse width modulation signal P1 having a frequency of f1, and the main control unit 270 further includes a second pulse width modulation. A variable (PWM) switch (not shown), and a second pulse width modulation (PWM) switch (not shown) that emits a second pulse width modulation having an f2 frequency during the first pulse width modulation (PWM) switch being turned on The variable signal P2 is configured to convert the first pulse width modulation signal P1 into a ratio of the first control signal S1 and the second control signal S2, so that the first control signal S1 and the second control signal S2 are switched to the first and the first The second control unit 240, 250, and the first control signal S1 and the second control signal S2 are converted into the first torque (τ1) provided to the first motor (M1) 235 via the first and second control units 240, 250. And a second torque (τ2) of the second motor (M2) 255. In the present embodiment, both f1 and f2 are greater than or equal to 10 Hz, and f1/f2 ≥ 5 or f2/f1 ≥ 5.

Next, please refer to FIG. 2B~2C, which is a timing waveform diagram presented by the control system according to FIG. 2A. As shown in FIG. 2B, the first row shows the timing waveform of the first pulse width modulation signal P1 having the f1 frequency output by the power generating unit 210, and P1>0; the second line is presented by the main The control unit 270 outputs the timing waveform of the second pulse width modulation signal P2 having the f2 frequency output according to the demand input by the rider; the third line presents the first control signal input to the first control unit 240. The timing waveform of S1, and the fourth row shows the timing waveform input to the second control signal S2 of the second control unit 250. As shown in FIG. 2B, the first pulse width modulation signal P1 is switched by the timing signal of the second pulse width modulation signal P2 having the f2 frequency output by the main control unit 270 according to the demand input by the rider. The ground is input to the first and second control sheets 240 and 245, wherein 65% of the first pulse width modulation signal P1 is converted into the first control signal S1, and 35% of the first pulse width modulation signal P1 is converted into the first The second control signal S2, and the first control signal S1 and the second control signal S2 are converted into the first torque (τ1) supplied to the first motor (M1) 235 via the first and second control units 240, 250, respectively. And a second torque (τ2) of the second motor (M2) 255. At this time, the first torque τ1 of the first motor (M1) 245 is greater than the second torque τ2 of the second motor (M2) 255, so the chain-free differential stepless bicycle 100 can be leftward when traveling forward. turn.

Next, as shown in FIG. 2C, the first pulse width modulation signal is caused by the timing waveform of the second pulse width modulation signal P2 having the f2 frequency output by the main control unit 270 according to the demand input by the rider. P1 is switched to be input to the first and second control sheets 240 and 245, wherein 45% of the first pulse width modulation signal P1 is converted into the first control signal S1, and 55% of the first pulse width modulation signal P1 is converted. The second control signal S2 is input, and the first control signal S1 and the second control signal S2 are respectively converted into the first torque provided to the first motor (M1) 235 via the first and second control units 240, 250 ( Τ1) and a second torque (τ2) of the second motor (M2) 255. At this time, the first torque τ1 of the first motor (M1) 245 is smaller than the second torque τ2 of the second motor (M2) 255, so that the chain-free differential stepless bicycle 100 can be rightward when traveling forward. turn.

Similarly, when the main control unit 270 outputs the second pulse width modulation signal P2 having the f2 frequency output according to the demand input by the rider, the first control signal S1 of the 50% first pulse width modulation signal P1 is made. And the second control signal S2 of the first pulse width modulation signal P1 is switched to the first and second control units 240 and 250, and the first torque τ1 of the first motor (M1) 245 is equal to the first The second torque τ2 of the two motors (M2) 255, the chainless differential stepless bicycle 100 will be able to travel forward.

Similarly, when the main control unit 270 outputs the second pulse width modulation signal P2 having the f2 frequency output according to the demand input by the rider, the first control signal including the 100% second pulse width modulation signal P2 is obtained. S1 and a second control signal S2 including 0% of the second pulse width modulation signal P2 are switched into the first and second control units 240, 250, and the first torque τ1 of the first motor (M1) 245 The second torque τ2 = 0 greater than the second motor (M2) 255, so that the chainless differential stepless bicycle 100 will be rotated to the left.

Similarly, when the main control unit 270 outputs the second pulse width modulation signal P2 having the f2 frequency output according to the demand input by the rider, the first control signal including the 0% second pulse width modulation signal P2 is made. S1 and the second control signal S2 including the 100% second pulse width modulation signal P2, when switched input to the first and second control units 240, 250, the second torque τ2 of the second motor (M2) 255 The first torque τ1 = 0 greater than the first motor (M1) 245, so that the chainless differential stepless bicycle 100 will be rotated to the right in the home position.

Conversely, when the first pulse width modulation signal P1 having the f1 frequency output by the power generating unit 210 is less than 0, and the main control unit 270 is used in accordance with the demand input by the rider in the above manner, the first pulse width modulation is allocated. The change signal P1 and the first control signal S1 and the second control signal S2 are switched to the first and second control units 240 and 250, thereby regulating the first torque τ1 and the second of the first motor (M1) 245. The torque τ2 of the motor (M2) 255. Wherein, when τ1, τ2 ≦ 0, the chain-free differential stepless bicycle 100 can travel backward, and when │τ1 │ │ τ 2 │, the chain-free differential stepless bicycle 100 can travel backwards Turn right. When │τ2│>│τ1│, the chainless differential stepless bicycle 100 can turn left when traveling backwards. When │τ1│>τ2=0, there is no chain differential without segment. The shift bicycle 100 can be rotated to the right. When the │τ2│>τ1=0, the chain-free differential stepless bicycle 100 can be rotated to the left to rotate to the left.

In addition, the first pulse width having the f1 frequency output by the power generating unit 210 is controlled and distributed by using the second pulse width modulation signal P2 having the f2 frequency output by the main control unit 270 according to the demand input by the rider. When the signal P1 is modulated such that τ1>0 and τ2<0, the chainless differential stepless bicycle 100 will rotate to the left; and when τ1<0 and τ2>0, the chainless differential The stepless bicycle 100 will be turned to the right.

In this embodiment, the stepping generator 220 may be selected from a permanent magnet generator or a field generator, and may further include a bridge rectifier to rectify the alternating current generated by the stepping generator into a direct current. .

In addition, in the embodiment, the control system 200 further includes a pair of mains power bus bars 260 coupled to the power generating unit 210, and the first and second control units 240 and 250 are respectively connected to the On the mains power bus 260. In addition, the first control unit 240 in this embodiment includes a one-way or two-way rectifier, and the second bidirectional control unit 250 includes a one-way or two-way rectifier. Embodiment 2

This embodiment is also applicable to the chainless differential stepless bicycle 100 as shown in FIG. 1, but the control system 300 of the second embodiment is different from the control system 200 of the first embodiment, and the embodiment The two collocated control systems 300 are operable in at least four control modes. Hereinafter, a block diagram and a timing chart of the control system 300 of the second embodiment of the present invention in the first control mode operation will be described in FIGS. 3A to 3D; and FIG. 4A to FIG. 4B illustrate the control system 300 of the second embodiment of the present invention. Block diagram and timing diagram of the second control mode operation; FIG. 5A to FIG. 5B are block diagrams and timing diagrams of the control system 300 of the second embodiment of the present invention in the third control mode operation; FIG. 6A~6B illustrates A block diagram and a timing diagram of the control system 300 of the second embodiment of the present invention in the fourth control mode operation.

First, please refer to FIG. 3A, which shows a block diagram of the control system 300 of the second embodiment of the present invention in the first control mode operation. As shown in FIG. 3A, the control system 300 includes a power generating unit 210 including a step-on generator 220; a pair of mains power bus bars 260 coupled to the power generating unit 210; and a first bidirectional control unit 240'. The first bidirectional control unit 240 ′ is coupled between the power generating unit 210 and the first motor (M1 ) 245 and connected to the mains power bus 260 , and the first bidirectional control unit 240 ′ can convert the received first control signal S1 into a provided The first torque (τ1) of the first motor (M1) 245; a second bidirectional control unit 250 coupled between the power generating unit 210 and the second motor (M2) 255 and connected to the mains power bus 260 The second bidirectional control unit 250' can convert the second control signal S2 it receives into a second torque (τ2) provided to the second motor (M2) 255; a battery module 280, coupled The power unit 210 is connected to the power line 260. The battery module 280 includes a rechargeable battery 288 and a third bidirectional control unit 285. The third bidirectional control unit 285 is coupled to the power unit 210. Between the rechargeable batteries 288, and a main control unit 270, respectively coupled In ', between the power generation unit 210 and the second bidirectional control unit 250' and 210 between the battery modules 280 and power generating unit 210 between the first bidirectional control unit 240, and a power generation unit. The power generating unit 210 further includes a first pulse width modulation (PWM) switch 230, which can send a first pulse width modulation signal P1 having a frequency of f1, and the main control unit 270 further includes a second A pulse width modulation (PWM) switch (not shown), and a second pulse width modulation (PWM) switch (not shown) can issue a frequency with an f2 frequency during the first pulse width modulation (PWM) switch 230 being turned on The second pulse width modulation signal P2 is configured to convert the first pulse width modulation signal P1 into a ratio of the first control signal S1 and the second control signal S2, so that the first control signal S1 and the second control signal S2 are switched to the same. First and second control units 240', 250', and convert the first control signal S1 and the second control signal S2 to the first motor (M1) via the first and second control units 240', 250' The first torque (τ1) of 235 and the second torque (τ2) of the second motor (M2) 255. In the present embodiment, both f1 and f2 are greater than or equal to 10 Hz, and f1/f2 ≥ 5 or f2/f1 ≥ 5.

Next, please refer to FIGS. 3B-3C, which is a timing waveform diagram presented by the control system according to FIG. 3A. As shown in FIG. 3B, the first row shows the timing waveform of the first pulse width modulation signal P1 having the f1 frequency output by the power generating unit 210, and P1>0; the second line is presented by the main The control unit 270 outputs the timing waveform of the second pulse width modulation signal P2 having the f2 frequency output according to the demand input by the rider; the third line presents the first control input to the first control unit 240'. The timing waveform of the signal S1, and the fourth row shows the timing waveform input to the second control unit 250' second control signal S2. As shown in FIG. 3B, the timing waveform of the second pulse width modulation signal P2 having the f2 frequency output by the main control unit 270 according to the demand input by the rider, 65% of the first pulse width modulation signal P1 Is converted into the first control signal S1, and the 35% first pulse width modulation signal P1 is converted into the second control signal S2, and the first control signal S1 and the second control signal S2 are switched to the first, The second control unit 240', 250' converts the first control signal S1 and the second control signal S2 into the first motor (M1) 235 via the first and second bidirectional control units 240', 250'. The first torque (τ1) and the second torque (τ2) of the second motor (M2) 255. At this time, the first torque τ1 of the first motor (M1) 245 is greater than the second torque τ2 of the second motor (M2) 255, so the chain-free differential stepless bicycle 100 can be leftward when traveling forward. turn.

Next, as shown in FIG. 3C, the timing waveform of the second pulse width modulation signal P2 having the f2 frequency output by the main control unit 270 according to the demand input by the rider, 45% of the first pulse width modulation The signal P1 is converted into the first control signal S1, and the 55% first pulse width modulation signal P1 is converted into the second control signal S2, and the first control signal S1 and the second control signal S2 are switched to the first First, the second bidirectional control unit 240', 250', and the first control signal S1 and the second control signal S2 are converted into the first motor (M1) via the first and second bidirectional control units 240', 250' a first torque (τ1) of 235 and a second torque (τ2) of the second motor (M2) 255. At this time, the first torque τ1 of the first motor (M1) 245 is smaller than the second torque τ2 of the second motor (M2) 255, so that the chain-free differential stepless bicycle 100 can be rightward when traveling forward. turn.

Similarly, by controlling the size of the first pulse width modulation signal P1 having the f1 frequency output by the power generating unit 210, and the second pulse having the f2 frequency output by the main control unit 270 according to the demand input by the rider. The timing of the width modulation signal P2, the size of the first and second control signals S1, S2 input to the first and second bidirectional control units 240', 250' can be changed as described in the first embodiment. First, the second torques τ1, τ2, and thus control the travel, retreat or steering of the chainless differential stepless bicycle 100 according to the control system 300 of the present embodiment, which will not be described herein.

In addition, please refer to FIG. 3D, which shows a block diagram of the control system 300 of the second embodiment of the present invention in the first control mode operation. As shown in FIG. 3D, when the control system 300 is operated in the first control mode, the active control unit 270 converts the first pulse width modulation signal P1 from the power generating unit 210 into the first control signal S1 and the second. In addition to the ratio of the control signal S2, the ratio of the first pulse width modulation signal P1 to the third control signal S3 is further distributed, and the third control signal S3 can be converted via the third bidirectional control unit 285 in the battery module 280. The power that can be charged by the rechargeable battery.

Next, please refer to FIG. 4A, which shows a block diagram of the control system 300 of the second embodiment of the present invention in the second control mode operation. As shown in FIG. 4A, when the rider selects the second control mode, the main control unit 270 causes the second pulse width modulation signal P2 from the power generation unit 210 to pass through the third bidirectional control unit 285 to the rechargeable battery 288. Charge it. Next, please refer to FIG. 4B, which shows the timing waveform presented by the control system according to FIG. 4A. As shown in FIG. 4B, the first row shows the timing waveform of the first pulse width modulation signal P1 having the f1 frequency output by the power generating unit 210. In addition, when the rider selects the second control mode, the main control unit 270 will not output the second pulse width modulation signal P2 having the f2 frequency, so the first control signal S1 of the first bidirectional control unit 240' is input. The timing waveform and the timing waveform of the second control signal S2 input to the second bidirectional control unit 250' are all in a straight line, and the first motor (M1) 245 and the second motor (M2) 255 are not rotated. At this time, there is no chain difference. The movable stepless bicycle 100 is stationary, and only the power generating unit 210 charges the rechargeable battery 288. Therefore, the PWM signal timing waveform of the input battery module and the output of the power generating unit 210 having the f1 frequency are presented in the fifth row of FIG. The timing waveform of the first pulse width modulation signal P1 is the same.

Next, please refer to FIG. 5A, which shows a block diagram of the control system 300 of the second embodiment of the present invention in the third control mode operation. As shown in FIG. 5A, when the rider selects the third control mode, for example, while braking, the first and second bidirectional control units 240', 250' can be controlled via the main control unit 270 to cause the first motor ( The M1) 245 and/or the second motor (M2) 244 respectively output the first and second control signals S1 and S2 in reverse, and further charge the rechargeable battery 288 via the third bidirectional control unit 285 of the battery module 280. In the third control mode operation, the timing waveform of the PWM signal P1 output by the power generating unit 210, the timing waveform of the PWM signal P2 output by the main control unit 270, the first control bidirectional unit 240', and the second bidirectional control unit The input timing signal waveforms S1 and S2 of the 250' and the input timing waveforms when the battery module 280 is charged are as shown in FIG. 5B, and are not described herein again.

Next, please refer to FIG. 6A, which shows a block diagram of the control system 300 of the second embodiment of the present invention in the fourth control mode operation. As shown in FIG. 6A, when the rider selects the fourth control mode, the main control unit 270 can control the third bidirectional control unit 285 according to the demand input by the rider to cause the battery module 280 to output the P1 in the reverse direction. The first pulse width modulation signal P1, and the main control unit 270 itself emits a second pulse width modulation signal P2 having a f2 frequency, and the first pulse width modulation signal P1 is allocated to be converted into the first control signal S1 and the second control signal. The ratio of S2 is such that the first control signal S1 and the second control signal S2 are switchedly input to the first and second bidirectional control units 240', 250'. In the present embodiment, both f1 and f2 are greater than or equal to 10 Hz, and f1/f2 ≥ 5 or f2/f1 ≥ 5. As shown in FIG. 6B, the first row shows the first pulse width modulation signal P1 timing waveform outputted by the battery module 280 having the f1 frequency; the second row is represented by the main control unit 270. The second pulse width modulation signal P2 timing waveform with the f2 frequency output by the demand input by the occupant; the third row shows the timing of the first control signal S1 input to the first bidirectional control unit 240' The waveform, and the fourth row shows the timing waveform of the second control signal S2 input to the second bidirectional control unit 250'. As described above, by changing the magnitude of the first pulse width modulation signal P1 timing signal outputted by the battery module 280 having the f1 frequency, and using the main control unit 270 to input the first pulse according to the demand input by the rider. The width modulation signal P1 and the first control signal S1 and the second control signal S2 are switched to the first and second bidirectional control units 240', 250' to adjust the first of the first motor (M1) 245. The torque τ1 and the torque τ2 of the second motor (M2) 255, in turn, control the travel, retreat or steering of the chainless differential stepless bicycle 100 of the control system 300 according to the present embodiment.

In addition, in this embodiment, the stepping generator 220 may be selected from a permanent magnet generator or a galvano generator, and may further include a bridge rectifier to rectify the alternating current generated by the stepping generator. Into direct current.

In addition, in the embodiment, the control system 300 further includes a pair of trunk power bus bars 260 coupled to the power generating unit 210, and the first and second bidirectional control units 240', 250' are respectively spanned. Connected to the pair of mains power bus 260. In addition, the first bidirectional control unit 240' in this embodiment further includes a first bidirectional rectifier, and the second bidirectional control unit 250 further includes a second bidirectional rectifier.

In view of the above, the present invention is disclosed in the above preferred embodiments, and is not intended to limit the present invention. Any one of ordinary skill in the art can be modified without departing from the spirit and scope of the present invention. Combining the various embodiments described above, the present invention is applied to other stepless bicycles.

100‧‧‧No chain differential stepless bicycle
200, 300‧‧‧ control system
110‧‧‧Carriage
210‧‧‧Power Unit
110A‧‧‧Driver
220‧‧‧stepping generator
110B‧‧‧Free end
230‧‧‧First Pulse Width Modulation (PWM) Switch
120‧‧‧Cushion
240‧‧‧First Control Unit
120A‧‧‧The leading edge of the cushion 120
240'‧‧‧ first two-way control unit
125‧‧‧rails
245‧‧‧First motor (M1)
130A‧‧‧Right drive wheel
250‧‧‧Second Control Unit
130B‧‧‧Left drive wheel
250'‧‧‧Second two-way control unit
130C‧‧‧Freewheel
255‧‧‧Second motor (M2)
135‧‧‧ bearing
260‧‧‧Trunk power bus
140‧‧‧Shock absorber
270‧‧‧Main control unit
145‧‧‧Rider input or selection interface
280‧‧‧ battery module
150‧‧‧Fixed rod
285‧‧‧ Third bidirectional control unit
170‧‧‧ brake system
288‧‧‧Rechargeable battery

Figure 1 is a perspective view of a chainless differential stepless bicycle according to the present invention.

2A-2C are block diagrams and timing waveform diagrams of the control system according to the first embodiment of the present invention.

3A-3D are block diagrams and timing waveform diagrams of the control system according to the second embodiment of the present invention in the first control mode operation.

4A-4B are block diagrams and timing waveform diagrams of the control system according to the second embodiment of the present invention in the second control mode operation.

5A-5B are block diagrams and timing waveform diagrams of the control system according to the second embodiment of the present invention in the third control mode operation.

6A-6B are block diagrams and timing waveform diagrams of the control system according to the second embodiment of the present invention in the fourth control mode operation.

200‧‧‧Control system

210‧‧‧Power Unit

220‧‧‧stepping generator

230‧‧‧First Pulse Width Modulation (PWM) Switch

240‧‧‧First Control Unit

245‧‧‧First motor (M1)

250‧‧‧Second Control Unit

255‧‧‧Second motor (M2)

260‧‧‧Trunk power bus

270‧‧‧Main control unit

Claims (31)

A chainless differential stepless bicycle includes: a vehicle platform (FRAME), and the vehicle platform includes an opposite driving end and a free end; a seat cushion is adjustably disposed on the vehicle platform; a right driving wheel and a left driving wheel coupled to a bearing and pivotally connected to both sides of the driving end of the platform by the bearing, and the right driving wheel is driven by a first motor, and the left driving wheel is Driven by a second motor; at least one free wheel pivotally connected to the free end of the platform, and the at least one free wheel can be driven forward by the right drive wheel and/or the left drive wheel; The first control unit is coupled between the power generating unit and the first motor, and the first control unit is coupled to the front end of the seat cushion, and the power generating unit includes a stepping generator; The first control signal S1 received by the first control signal S1 can be converted into a first torque (τ1) provided to the first motor; and a second control unit coupled to the power generation unit and the second control unit Between the second motor and the second two-way control The unit can convert the second control signal S2 it receives into a second torque (τ2) that is supplied to the second motor. The chain-free differential stepless bicycle according to claim 1, wherein when τ1=τ2=0, the chain-free differential stepless bicycle is stationary; when τ1, τ2≧0, The chainless differential stepless bicycle can travel forward, and when τ1>τ2, the chainless differential stepless bicycle can turn left when traveling forward, when τ2>τ1, the no The chain differential type stepless bicycle can turn right when traveling forward. When τ1>τ2=0, the chain-free differential stepless bicycle can be turned to the left in the left direction, when τ2 >τ1=0, the chainless differential stepless bicycle can be turned to the right; when τ1, τ2≦0, the chainless differential stepless bicycle can travel backwards, and when │τ1│ >│τ2│, the chainless differential stepless bicycle can turn right when traveling backwards. When │τ2│>│τ1│, the chainless differential stepless bicycle can travel backwards. Turn left, when │τ1│>τ2=0, the chainless differential stepless bicycle can be turned to the right When │τ2│>τ1=0, the chain-free differential stepless bicycle can be rotated to the left; when τ1>0, τ2<0, the chain-free differential stepless bicycle can be Left-hand rotation; when τ1<0, τ2>0, the chain-free differential stepless bicycle can be rotated to the right. The chainless differential stepless bicycle according to claim 2, wherein the stepping generator comprises a permanent magnet generator or a galvano generator. The chain-free differential stepless bicycle described in claim 3, and further comprising a bridge rectifier, can rectify the alternating current generated by the step-on generator into direct current. The chain-free differential stepless bicycle as described in claim 2, further comprising a pair of mains power bus bars coupled to the power generating unit, wherein the first and second bidirectional control units are respectively connected On the pair of mains power busbars. The chain-free differential stepless bicycle of claim 2, wherein the first control unit comprises a one-way or two-way rectifier. The second control unit includes a one-way or two-way rectifier, as claimed in claim 2, in the chainless differential stepless bicycle. The chainless differential stepless bicycle according to claim 2, wherein the at least one free wheel is a free wheel that can be arbitrarily changed direction. The chain-free differential stepless bicycle according to claim 2, wherein the platform further comprises a slide rail extending between the drive end and the free end, and the rider can make the seat cushion as required by the rider. Slide the front and rear of the slide rail to adjust the position. The chainless differential stepless bicycle according to claim 9, further comprising a shock absorber formed between the slide rail and the bearing. The chain-free differential stepless bicycle as described in claim 2, further comprising a direction and hand brake control device disposed on the platform. The main control unit further includes a rider input or selection interface fixed to the vehicle platform or the direction and the hand brake control device, as claimed in claim 11 for the chainless differential stepless bicycle. The chain-free differential stepless bicycle according to any one of claims 1 to 12, wherein the power generating unit includes a first pulse width modulation (PWM) switch, and the stepping generator can be used. The emitted power is converted into a first pulse width modulation signal P1 having a frequency of f1. The chain-free differential stepless bicycle according to claim 13 further includes a main control unit coupled between the power generating unit and the first bidirectional control unit, and the power generating unit and the first Between the two bidirectional control units, and the main control unit includes a second pulse width modulation (PWM) switch, which enables the second pulse width modulation (PWM) switch to be in accordance with the demand input by the rider. A pulse width modulation (PWM) switch is turned on, and a second pulse width modulation signal P2 having a frequency of f2 is generated, and the first pulse width modulation signal P1 is allocated to be converted into the first control signal S1 and the second control signal. The ratio of S2, wherein f1 and f2 are both greater than or equal to 10 Hz, and f1/f2 ≥ 5 or f2/f1 ≥ 5. A chainless differential stepless bicycle includes: a vehicle platform (FRAME), and the vehicle platform includes an opposite driving end and a free end; a seat cushion is adjustably disposed on the vehicle platform; a right driving wheel and a left driving wheel coupled to a bearing and pivotally connected to both sides of the driving end of the platform by the bearing, and the right driving wheel is driven by a first motor, and the left driving wheel is Driven by a second motor; at least one free wheel pivotally connected to the free end of the platform, and the at least one free wheel can be driven forward by the right drive wheel and/or the left drive wheel; Connected to the driving end of the vehicle, and the power generating unit includes a stepping generator, and can emit a first pulse width modulation signal P1 having a frequency of f1; a pair of trunk power buss coupled to the power generating unit; a first bidirectional control unit coupled between the power generating unit and the first motor and connected to the pair of mains power bus bars, and the first bidirectional control unit can receive the same First control signal S1, converted into a first torque (τ1) provided to the first motor; a second bidirectional control unit coupled between the power generating unit and the second motor and connected to the second torque control unit For the mains power bus, and the second bidirectional control unit can convert the second control signal S2 received by the second bidirectional control unit into a second torque (τ2) provided to the second motor; Connected to the power generating unit and connected to the pair of mains power bus, wherein the battery module includes a rechargeable battery and a third bidirectional control unit, and the third bidirectional control unit is coupled to the power generating unit Between the rechargeable batteries, and the battery module can be charged by the power generating unit or the first and second motors, or provide power to the first and second motors; a main control unit coupled to the Between the power generating unit and the first bidirectional control unit, the second bidirectional control unit and the battery module, the main control unit includes a second and the main control unit is operable according to the following mode input by the rider: When the first model In operation, the power generating unit can provide a first pulse width modulation signal P1 to the first and second reverse control units under the control of the main control unit to drive the first motor and/or the second motor. When the second mode is operated, the first pulse width modulation signal P1 from the power generating unit can be charged to the rechargeable battery via the third bidirectional control unit under the control of the main control unit. Wherein, when operating in the third mode, the first and second bidirectional control units can be controlled via the main control unit, so that the first motor and/or the second motor respectively output the first and second inversion respectively Controlling the signals S1, S2, and further charging the rechargeable battery via the third bidirectional control unit; wherein, when operating in the fourth mode, the third bidirectional control unit can be controlled via the main control unit to enable the The battery module reversely provides a first pulse width modulation signal P1 to the first and second reverse control units to drive the first motor and/or the second motor. For example, in the chainless differential stepless bicycle described in claim 15, when τ1=τ2=0, the chainless differential stepless bicycle is stationary; when τ1, τ2≧0, the absence The chain differential stepless bicycle can travel forward, and when τ1>τ2, the chainless differential stepless bicycle can turn left when traveling forward. When τ2>τ1, the chainless difference The movable stepless bicycle can turn right when traveling forward. When τ1>τ2=0, the chainless differential stepless bicycle can be rotated to the left. When τ2>τ1=0, the The chain-free differential stepless bicycle can be rotated to the right; when τ1, τ2≦0, the chain-free differential stepless bicycle can travel backwards, and when │τ1│>│τ2│, The chain-free differential stepless bicycle can turn right when traveling backwards. When │τ2│>│τ1│, the chain-free differential stepless bicycle can turn left when traveling backwards, when │τ1 │>τ2=0, the chainless differential stepless bicycle can be turned to the right, when │τ2│>τ1=0 The chain-free differential stepless bicycle can be rotated to the left; when τ1>0, τ2<0, the chain-free differential stepless bicycle can be rotated to the left; when τ1<0, When τ2>0, the chainless differential stepless bicycle can be rotated to the right. The chain-free differential stepless bicycle according to claim 16, wherein the stepping generator comprises a permanent magnet generator or a galvano generator. The chain-free differential stepless bicycle according to claim 17, and further comprising a bridge rectifier, which can rectify the alternating current generated by the step-on generator into direct current. The chain-free differential stepless bicycle according to claim 16, wherein the first control unit comprises a first bidirectional rectifier. The second control unit includes a second bidirectional rectifier as claimed in claim 16 for the chainless differential stepless bicycle. The third control unit includes a third bidirectional rectifier, as claimed in claim 16 for the chainless differential stepless bicycle. The chain-free differential stepless bicycle according to claim 16, wherein the active control unit allocates the power from the power generating unit or the battery module when operating in the first mode or the fourth mode Converting the first pulse width modulation signal P1 into a ratio of the first control signal S1 and the second control signal S2, and switching the first control signal S1 and the second control signal S2 to the first and second directions control unit. The chain-free differential stepless bicycle according to claim 22, wherein when operating in the first mode, the active control unit divides the first pulse width modulation signal P1 from the power generating unit. In addition to the ratio of the first control signal S1 and the second control signal S2, the first pulse width modulation signal P1 from the power generation unit is converted into a third control signal S3, and the third control signal S3 can be The third two-way control unit converts power into charging the rechargeable battery. The chain-free differential stepless bicycle according to claim 16, wherein when operating in the third mode, the first and second two-way control units can be controlled via the main control unit, such that The first motor and/or the second motor respectively output the first and second control signals S1 and S2 in reverse, and respectively charge the rechargeable battery via the third bidirectional control unit. The chainless differential stepless bicycle according to claim 16, wherein the at least one free wheel is a free wheel that can be arbitrarily changed direction. The chain-free differential stepless bicycle according to claim 16, wherein the platform further comprises a slide rail extending between the drive end and the free end, and the rider can make the seat cushion as required by the rider. Slide the front and rear of the slide rail to adjust the position. The chainless differential stepless bicycle according to claim 26, further comprising a suspension device formed between the sliding rail and the bearing. The chain-free differential stepless bicycle as described in claim 16 further includes a direction and hand brake control device disposed on the platform. The main control unit further includes a rider input or selection interface fixed to the vehicle platform or the direction and the hand brake control device, as claimed in claim 28, wherein the main control unit further includes a rider input or selection interface. The chain-free differential stepless bicycle according to any one of claims 15 to 29, wherein the power generating unit includes a first pulse width modulation (PWM) switch, and the stepping generator can be used. The emitted power is converted into a first pulse width modulation signal P1 having a frequency of f1. The chain-free differential stepless bicycle according to claim 30, wherein the main control unit comprises a second pulse width modulation (PWM) switch, which can be made according to the demand input by the rider. The second pulse width modulation (PWM) switch emits a second pulse width modulation signal P2 having a frequency of f2 during the first pulse width modulation (PWM) switch being turned on, thereby allocating the first pulse width modulation signal P1. Converted into a ratio of the first control signal S1 and the second control signal S2, wherein f1 and f2 are both greater than or equal to 10 Hz, and f1/f2≥5 or f2/f1≥5.