TWM553294U - Pedal load controlling device and electric bike - Google Patents

Description

Pedal load control device and electric bicycle

The present invention relates to a pedal load control device and an electric bicycle, and more particularly to a pedal load control device having a center motor and an electric bicycle.

The rise of environmental awareness and health concepts has driven the trend of bicycles. Riding bicycles not only achieves fitness, but also saves energy. However, due to the different pedaling or tread speed of each person's habits, and depending on the road conditions, it is necessary to adjust the working load of the pedal to reduce the burden on the rider. Therefore, the bicycle is generally equipped with a shifting device, and the gear ratio is changed. Change the workload of the pedal.

Conventional shifting devices include a set of sprocket sets having cogwheels of different sizes that are coaxially disposed, and when the chain of the bicycle is coupled to a different sprocket, the working load of the pedal changes. However, such a shifting device coupled via a chain tends to cause the chain to fall off during the shifting and shifting, and thus there is a disadvantage.

In view of this, how to make the bicycle have a stable shift adjustment function to adjust the working load of the pedal, and achieve the goal of the related industry.

The present invention provides a pedal load control device and an electric bicycle. Through the setting of the control module and the center motor, the current of the center motor can be changed to adjust the workload of the adjustment pedal unit.

According to one aspect of the present invention, a pedal load control device is provided for changing a working load of a pedal unit on a vehicle. The pedal load control device includes a center motor and a control module, and the center motor is disposed in the vehicle. When the pedal unit is connected to the pedal unit, the pedal unit is driven to generate power by the central motor to provide a first current. The control module is disposed in the vehicle and electrically connected to the central motor to adjust the magnitude of the first current, thereby adjusting the working load of the pedal unit. .

Thereby, the first current is adjusted through the control module, that is, the purpose of stably adjusting the working load of the pedal unit can be achieved, without setting a physical shifting device, and the problem that the physical shifting mechanism is unstable during the shifting process can be avoided.

According to the pedal load control device, the battery may be further disposed on the vehicle and electrically connected to the control module, and the first current is used to charge the battery. Or the control module can include a detecting unit, the detecting unit includes a voltage detector electrically connected to the center motor, and the voltage detector detects a voltage of the center motor for the control module to determine the working load of the pedal unit . Or the pedal load control device may further include a setting module disposed on the vehicle and electrically connected to the control module, wherein the control module controls the working load of the pedal unit according to a specific value, and the setting module is configured to set a specific value.

According to one aspect of the present invention, an electric bicycle is provided, including A vehicle body and a pedal load control device, the vehicle body comprises a frame, at least one wheel and a pedal unit, the wheel hub is disposed on the frame, and the pedal unit is disposed on the frame and drives the wheel. The pedal load control device includes an auxiliary motor, a center motor and a control module. The auxiliary motor is provided with the vehicle body and drives the wheel. The center motor is disposed on the frame and is connected to the pedal unit, and the pedal unit is driven by the force rotation. The motor generates power to provide a first current, the control module is electrically connected to the center motor and the auxiliary motor, the control module selectively opens and closes the auxiliary motor, and the control module includes a detecting unit for detecting the pedal unit The stepping state; wherein when the pedaling state meets a predetermined condition, the control module adjusts the magnitude of the first current to regulate a workload of the pedal unit.

According to the foregoing electric bicycle, the detecting unit may include a voltage detector electrically connected to the center motor, and the voltage detector detects a voltage of the center motor for the control module to determine the working load of the pedal unit. Or the pedal unit may include a crank and a one-way ratchet, and the one-way ratchet is driven by the crank and interlocks a driving shaft of the middle motor in a first direction, wherein the crank rotates in a second direction opposite to the first direction, The drive shaft of the motor is not linked.

According to the foregoing electric bicycle, the pedal load control device may further include a battery disposed on the frame and electrically connected to the control module, and the first current is used for charging the battery. Or the pedal load control device may further include a setting module disposed on the vehicle body, and the setting module includes a setting interface for setting a preset condition.

100‧‧‧ pedal load control device

500‧‧‧Battery

100a‧‧‧ pedal load control device

110‧‧‧Electric bicycle

200‧‧‧ center motor

200a‧‧‧ center motor

300‧‧‧Control Module

300a‧‧‧Control Module

310‧‧‧Detection unit

310a‧‧‧Detection unit

400‧‧‧Setting module

400a‧‧‧Setting module

410a‧‧‧Setting interface

500a‧‧‧Battery

600a‧‧‧Auxiliary motor

700a‧‧‧ body

710a‧‧‧ frame

720a‧‧‧ Rear wheel

730a‧‧‧ front wheel

740a‧‧‧ pedal unit

741a‧‧‧ crank

742a‧‧‧foot

I1‧‧‧First current

FIG. 1 is a diagram showing a pedal load control device according to an embodiment of the present invention. FIG. 2 is a schematic perspective view of an electric bicycle according to another embodiment of the present invention; and FIG. 3 is a block diagram showing the electric bicycle of FIG. 2 .

Embodiments of the present invention will be described below with reference to the drawings. For the sake of clarity, many practical details will be explained in the following description. However, readers should be aware that these practical details are not intended to limit the novel. That is to say, in some embodiments of the present invention, these practical details are not necessary. In addition, some of the conventional structures and elements are illustrated in the drawings in a simplified schematic representation, and the

Please refer to FIG. 1 , which is a block diagram of a pedal load control device 100 according to an embodiment of the present invention. The pedal load control device 100 is used to change a working load of a pedal unit on a vehicle. The pedal load control device 100 includes a center motor 200 and a control module 300. The center motor 200 is disposed in the vehicle and is connected to the pedal unit. When the unit is rotated, the center motor 200 generates power to provide a first current I1. The control module 300 is disposed in the vehicle and electrically connected to the center motor 200 to adjust the magnitude of the first current I1, thereby regulating the working load of the pedal unit. .

Thereby, the first current I1 is adjusted through the control module 300, so that the purpose of stably adjusting the working load of the pedal unit can be achieved. Details of the pedal load control device 100 and the principle of actuation will be described later.

The vehicle to which the pedal load control device 100 is applied may be a general bicycle or an electric bicycle. The center motor 200 can be a motor that has both power generation and power output functions. The center motor 200 includes a drive shaft (not shown), and the pedal unit includes a crank. The crank is connected to the drive shaft to enable the pedal unit to be used. When the pedal is rotated, the drive shaft of the center motor 200 is rotated, and the center motor 200 generates a first current I1.

In this case, the center motor 200 is driven by the pedal unit to generate a counter electromotive force to form a torque. By adjusting the magnitude of the first current I1, the torque of the center motor 200 can be adjusted, and the center motor 200 is connected to the pedal. Therefore, when the torque of the center motor 200 is large, the working load of the pedal unit is large, and the user needs to step on the pedal to drive the driving shaft of the center motor 200; otherwise, when the torque of the center motor 200 is small, the pedal The working load of the unit is small, and the user can drive the driving shaft of the center motor 200 to rotate by simply stepping on it.

The pedal load control device 100 further includes a setting module 400 disposed on the vehicle and electrically connected to the control module 300. The control module 300 regulates the workload of the pedal unit according to a specific value, and the setting module 400 is configured to set a specific value. The setting module 400 can be used by the user to set the pedal unit speed, pedaling force or power to be reached, and set a specific value, and the setting module 400 can further detect the pedaling state of the pedal unit. The control module 300 can include a detecting unit 310. The detecting unit 310 includes a voltage detector electrically connected to the center motor 200. The voltage detector detects a voltage of the center motor 200 to determine the working load of the pedal unit. The through-voltage can measure the rotational speed of the center motor 200 to obtain a pedal unit pedaling force. Since V=Kexω, where V is the voltage value, Ke is the motor Since the electromotive force constant and ω are the rotational speeds of the center motor 200, the angular acceleration (obtained by the rotational speed) can be obtained by detecting the voltage change of the center motor 200, and the pedaling force can be obtained.

In an operation state, the setting module 400 can set the tread speed of 50 rpm (rotation per minute), and when the user steps on the pedal unit beyond the specific value, the user is too relaxed, and the control module 300 can adjust the first The magnitude of the current I1 increases the workload of the pedal unit, allowing the user to maintain the pedaling at the specific value described above. On the contrary, when the user steps on the pedal unit below the specific value, the user is too hard. At this time, the control module 300 can adjust the size of the first current I1 to reduce the workload of the pedal unit, so that the user can maintain The above specific values are stepped on. Therefore, the control module 300 only needs to adjust the magnitude of the first current I1, that is, the purpose of adjusting the workload of the pedal unit can be achieved. In other operating states, it is also possible to set the pedaling force to be equal to 40 Newton meters, or the power equal to 200 watts.

In this embodiment, the pedal load control device 100 can further include a battery 500 electrically connected to the control module 300, and the first current I1 can be used to charge the battery 500. Therefore, the center motor 200 generates power after being driven by the pedal unit, and charges the battery 500, and adjusts the workload of the pedal unit through the control module 300 to adjust the magnitude of the first current I1 entering the battery 500. When the center motor 200 is a motor having both power generation and power output functions, the battery 500 can also supply power to the center motor 200 to rotate the center motor 200.

In this case, a boosting start value can be set, which can be set by the user through the setting module 400 or preset in the control module 300. The boosting start value can be the vehicle speed, for example, the set speed is 10 kilometers. Every small When the pedal unit speed is lower than a specific value and the vehicle speed is lower than the assist activation value, the control module 300 supplies the battery 500 to the center motor 200, and then the center motor 200 outputs power to reduce the user's pedaling. The burden, in turn, helps the user to climb or start. In this case, the control module 300 may further include a speed detecting unit to detect the speed of the vehicle.

Please refer to FIG. 2 and FIG. 3 , wherein FIG. 2 is a perspective view of an electric bicycle 110 according to another embodiment of the present invention, and FIG. 3 is a block diagram of the electric bicycle 110 of FIG. 2 . The electric bicycle 110 includes a vehicle body 700a and a pedal load control device 100a. The vehicle body 700a includes a frame 710a, at least one wheel (the present embodiment includes a rear wheel 720a and a front wheel 730a), and a pedal unit 740a. It is disposed on the frame 710a, the pedal unit 740a is disposed on the frame 710a and drives the wheel. The pedal load control device 100a includes an auxiliary motor 600a, a center motor 200a and a control module 300a. The auxiliary motor 600a is disposed on the vehicle body 700a. The upper wheel (the auxiliary motor 600a of the embodiment is disposed on the rear wheel 720a), the center motor 200a is disposed on the frame 710a and is connected to the pedal unit 740a. When the pedal unit 740a is rotated by force, the center motor 200a is driven to generate electricity. A first current I1 is provided, the control module 300a is electrically connected to the center motor 200a and the auxiliary motor 600a, the control module 300a selectively opens and closes the auxiliary motor 600a, and the control module 300a includes a detecting unit 310a for detecting A stepping state of the pedal unit 740a is measured; wherein when the pedaling state meets a predetermined condition, the control module 300a adjusts the magnitude of the first current I1 to regulate a workload of the pedal unit 740a.

As described above, the magnitude of the first current I1 is adjusted by the control module 300a, and the torque of the center motor 200a can be adjusted to adjust the pedal unit. The size of one of the workloads of 740a is not repeated here.

The pedal load control device 100a may further include a setting module 400a disposed on the vehicle body 700a. The setting module 400a includes a setting interface 410a for setting a preset condition. The preset condition may be that the pedaling speed is equal to a specific value, and the pedaling force is equal to a specific value. Or the power is equal to a specific value, etc. The setting interface 410a can be a touch screen, and has options and numbers on the touch screen for the user to select.

The detecting unit 310a may include a voltage detector electrically connected to the center motor 200a. The voltage detector detects a voltage of the center motor 200a for the control module 300a to determine the working load of the pedal unit 740a; and the pedal load control The device 100a further includes a battery 500a disposed on the frame 710a and electrically connected to the control module 300a, and the first current I1 is charged by the battery 500a. These parts are the same as those described in the first figure above and will not be described in detail.

Since the pedal load control device 100a further includes the assist motor 600a in the present embodiment, the assist motor 600a can provide the assisting force for the electric bicycle 110 to travel. Therefore, in an operation state, the setting module 400a can set the tread speed of 50 rpm, and when the user steps on the pedal unit 740a beyond the specific value, the user is too relaxed, and the control module 300a can adjust the first current. The size of I1 increases the workload of the pedal unit 740a, and the control module 300a does not activate the assist motor 600a, so that the user can maintain the pedaling at the specific value described above. On the contrary, when the user steps on the pedal unit 740a below the specific value, the user is too hard. At this time, the control module 300 can adjust the size of the first current I1, reduce the workload of the pedal unit 740a, and control the module. 300a will activate the auxiliary motor 600a to cause the auxiliary motor 600a to drive the rear wheel 720a to provide the assisting force of the electric bicycle 110, thereby helping the user to maintain the above-mentioned Specific values are stepped on.

In this embodiment, the center motor 200a can be used as a crank sensor, a pedal force sensor or a power meter during riding to detect the recharge value of the battery 500a of the center motor 200a, such as motor induced electromotive force and recharge. The flow, the recharge power, and the like are further used as adjustment references for the assist output of the assist motor 600a. The above is the basis T=KtxI, V=Kexω, and P=Txω, where T is the torque (torque) of the center motor 200a, Kt is the torque constant of the center motor 200a, and I is the current of the center motor 200a. P is the power of the center motor 200a.

In addition, the auxiliary motor 600a can be used as a generator to recover energy when going downhill or braking.

The pedal unit 740a can include a crank 741a and a one-way ratchet (not shown). The one-way ratchet is driven by the crank 741a and interlocks a drive shaft of the center motor 200a in a first direction, wherein the crank 741a is in the opposite first direction. When the second direction is rotated, the drive shaft of the center motor 200a is not interlocked. The pedal unit 740a includes a crank 741a and a pedal portion 742a. The pedal portion 742a is pivoted at one end of the crank 741a and is for the user to step on. Since the center motor 200a is a direct drive, an induced voltage is generated as long as the crank 741a rotates. When the crank 741a is reversed, there is no assistance, otherwise there is a safety problem. Therefore, this problem can be avoided by the configuration of the unidirectional ratchet, the interlocking relationship between the crank 741a and the center motor 200a.

In other embodiments, the motor Hall of the center motor 200a may be changed to a linear Hall to detect the reverse rotation of the center motor 200a, or to increase the forward and reverse signals, including the above disclosure but not limited thereto. .

It should be particularly noted that the electric bicycle 110 is a chain bicycle, and when the user steps on the pedal unit 740a, the center motor is initially driven. The 200a provides a low-quantity power generation amount, and after the electric bicycle 110 is started up to a certain speed, the workload of the pedal unit 740a is adjusted at a specific value such as the set pedaling force/tread speed to control the amount of power generation or the assisting force.

According to the above embodiment, the present invention has the following advantages.

1. The auxiliary motor can output the assisting electric bicycle to advance, so as to reduce the user's pedaling load (the larger the working load of the pedal unit, the greater the pedaling load required by the user), the electric motor that can provide the generating torque by the center motor The resistance is to increase the user's pedaling load, and the auxiliary motor and the center motor are used to increase or decrease the amount of pedaling force required by the user to step on the pedal unit, so that the transmission (bicycle transmission) can adjust the gear ratio to increase or decrease the pedaling load, instead of A physical transmission is required. The control module can further adjust preset conditions, such as speed, pedaling force, or power, through the setting module to provide the user with self-adjusting functions, and can maintain a fixed pedaling load, so that the user can use the preferred pedaling load value. Carry out riding.

2. When the center motor is set to the charging mode, the vehicle can be placed indoors as a trainer.

Although the present invention has been disclosed in the above embodiments, it is not intended to limit the present invention. Any one skilled in the art can make various changes and retouchings without departing from the spirit and scope of the present invention. The scope is subject to the definition of the scope of the patent application attached.

100‧‧‧ pedal load control device

200‧‧‧ center motor

300‧‧‧Control Module

310‧‧‧Detection unit

400‧‧‧Setting module

500‧‧‧Battery

I1‧‧‧First current

Claims (9)

A pedal load control device for changing a working load of a pedal unit on a vehicle, the pedal load control device comprising: a center motor disposed on the vehicle and connected to the pedal unit, the pedal unit being driven by a force The central motor generates power to provide a first current; and a control module is disposed on the vehicle and electrically connected to the central motor to adjust the magnitude of the first current to thereby regulate the working load of the pedal unit. The pedal load control device of claim 1, further comprising: a battery disposed in the vehicle and electrically connected to the control module, and the first current is charged by the battery. The pedal load control device of claim 1, further comprising: a setting module disposed on the vehicle and electrically connected to the control module; wherein the control module adjusts the pedal unit according to a specific value The workload is used by the setting module to set the specific value. The pedal load control device of claim 1, wherein the control module comprises a detecting unit, wherein the detecting unit comprises a voltage detector electrically connected to the center motor, and the voltage detector detects A voltage of the center motor is measured for the control module to determine the workload of the pedal unit. An electric bicycle comprising: a vehicle body comprising: a frame; at least one wheel pivotally mounted on the frame; and a pedal unit disposed on the frame and driving the wheel; and a pedal load control device, including An auxiliary motor is disposed on the vehicle body and drives the wheel; a center motor is disposed on the frame and connected to the pedal unit, and the pedal unit drives the center motor to generate electricity when the force is rotated And a control module electrically connecting the center motor and the auxiliary motor, the control module selectively opening and closing the auxiliary motor, and the control module comprises: a detecting unit for detecting a stepping state of the pedal unit; wherein when the stepping state meets a predetermined condition, the control module adjusts the magnitude of the first current to regulate a workload of the pedal unit. The electric bicycle according to claim 5, wherein the detecting unit comprises a voltage detector electrically connected to the center motor, and the voltage detector detects a voltage of the center motor for the control The module determines the workload of the pedal unit. The electric bicycle according to claim 5, wherein the pedal load control device further comprises: A battery is disposed on the frame and electrically connected to the control module, and the first current is used to charge the battery. The electric bicycle according to claim 5, wherein the pedal unit comprises: a crank; and a one-way ratchet, and a drive shaft driven by the crank and interlocking the central motor in a first direction; When the crank rotates in a second direction opposite to the first direction, the drive shaft of the center motor is not interlocked. The electric bicycle according to claim 5, wherein the pedal load control device further comprises: a setting module disposed on the vehicle body, the setting module comprising a setting interface for setting the preset condition.