JP3974974B2 - Auxiliary power control device for battery-assisted bicycle - Google Patents

Auxiliary power control device for battery-assisted bicycle Download PDF

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Publication number
JP3974974B2
JP3974974B2 JP19553097A JP19553097A JP3974974B2 JP 3974974 B2 JP3974974 B2 JP 3974974B2 JP 19553097 A JP19553097 A JP 19553097A JP 19553097 A JP19553097 A JP 19553097A JP 3974974 B2 JP3974974 B2 JP 3974974B2
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Japan
Prior art keywords
electric motor
set
value
assist ratio
detecting means
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
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JP19553097A
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Japanese (ja)
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JPH1134966A (en
Inventor
健治 川口
聡 本田
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本田技研工業株式会社
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Priority to JP19553097A priority Critical patent/JP3974974B2/en
Priority claimed from TW87111209A external-priority patent/TW409105B/en
Publication of JPH1134966A publication Critical patent/JPH1134966A/en
Application granted granted Critical
Publication of JP3974974B2 publication Critical patent/JP3974974B2/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B62LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62MRIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
    • B62M6/00Rider propulsion of wheeled vehicles with additional source of power, e.g. combustion engine or electric motor
    • B62M6/40Rider propelled cycles with auxiliary electric motor
    • B62M6/45Control or actuating devices therefor
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B62LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62MRIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
    • B62M6/00Rider propulsion of wheeled vehicles with additional source of power, e.g. combustion engine or electric motor
    • B62M6/40Rider propelled cycles with auxiliary electric motor
    • B62M6/55Rider propelled cycles with auxiliary electric motor power-driven at crank shafts parts
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B62LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62KCYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
    • B62K2207/00Sensors adapted for use on cycles, not otherwise provided for
    • B62K2207/04Sensors adapted for use on cycles, not otherwise provided for for sensing longitudinal inclination of the cycle

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention is a ratio of the auxiliary power by the electric motor to the pedal force by human power, comprising pedal force detection means for detecting the pedal force by human power and an electric motor that can exhibit auxiliary power according to the detected value of the pedal force detection means. The present invention relates to an auxiliary power control device for controlling auxiliary power by an electric motor in a battery-assisted bicycle capable of changing an assist ratio.
[0002]
[Prior art]
Conventionally, such a battery-assisted bicycle is already known, for example, in Japanese Patent Application Laid-Open No. 7-309283. In this battery-assisted bicycle, an assist ratio, which is a ratio of assist power by an electric motor to pedal force by human power, is set to, for example, 6 km / h. The operation of the electric motor is controlled by setting a value larger than 1 (for example, 3) in the following low speed range, and the assist ratio is set to, for example, 1 in the medium speed range exceeding 6 km / h, for example. To control.
[0003]
[Problems to be solved by the invention]
However, in the above-described conventional one, the vehicle speed inevitably decreases in a person with weak pedaling force when climbing a hill, and the occupant may feel uncomfortable because the auxiliary power increases rapidly in a low speed region of 6 km / h or less, for example. is there.
The present invention has been made in view of such circumstances, and an object of the present invention is to provide an auxiliary power control device in a battery-assisted bicycle that allows even a person with weak pedal effort to easily climb a hill without a sense of incongruity.
[0004]
[Means for Solving the Problems]
In order to achieve the above object, the invention described in claim 1 includes a pedaling force detecting means for detecting a pedaling force by human power and an electric motor capable of exhibiting auxiliary power according to a detection value of the pedaling force detecting means. In the battery-assisted bicycle that can change the assist ratio, which is the ratio of the assist power by the electric motor to the pedaling force by the vehicle, the tilt angle detecting means for detecting the tilt angle of the traveling road surface, and the detected value of the tilt angle detecting means is greater than or equal to the set value In some cases, the assist ratio larger than 1 is increased as the inclination angle becomes larger, and the assist ratio is set to 1 when the detected value of the inclination angle detecting means is less than a set value. And a controller for controlling the operation of the motor.
[0005]
According to the configuration of the first aspect of the present invention, the assist ratio increases according to the inclination angle when the traveling road surface becomes a slope with an inclination angle equal to or greater than the set value, so that the auxiliary power depends on the pedaling force. It can be obtained regardless of the running speed, and even a person with weak pedaling force can easily climb the hill without a sense of incongruity. When traveling on a flat road, the assist ratio is 1 .
[0006]
The invention according to claim 2 further includes a pedaling force detecting means for detecting a pedaling force by human power and an electric motor capable of exhibiting auxiliary power in accordance with a detected value of the pedaling force detecting means, and assisting the pedaling force by human power by the electric motor. In the battery-assisted bicycle capable of changing the assist ratio, which is the power ratio, the inclination angle detection means for detecting the inclination angle of the traveling road surface, the vehicle speed detection means, and the detection value of the vehicle speed detection means is not more than a set speed, and The assist ratio is set to a value greater than 1 in the first state where the detection value of the tilt angle detection means is equal to or greater than the set tilt angle, and the assist ratio is set to 1 or less in cases other than the first state. And a controller (31) for controlling the operation of the electric motor.
[0007]
According to the configuration of the invention described in claim 2, since the assist ratio is made larger than 1 when the vehicle speed is equal to or lower than the set vehicle speed and the inclination angle is equal to or higher than the set inclination angle when climbing on the slope, It is possible even for a weak person to climb a hill without a sense of incongruity, and when driving on a flat road, the assist ratio becomes 1 or less, so that it is possible to avoid unnecessarily increasing the load of the electric motor and extend the battery life. And is not accelerated on a flat road.
[0008]
Furthermore, the invention described in claim 3 is provided with a treading force detecting means for detecting a treading force by human power and an electric motor capable of exhibiting auxiliary power in accordance with a detected value of the treading force detecting means, and assisting the treading force by human power by the electric motor. In a battery-assisted bicycle capable of changing an assist ratio, which is a power ratio, a vehicle speed detecting means, and a first value in which a detected value of the vehicle speed detecting means is not more than a set speed and a detected value of the pedal force detecting means is not less than a set pedaling force. And a controller for controlling the operation of the electric motor so that the assist ratio is set to a value larger than 1 in the state and the assist ratio is set to 1 or less in a state other than the first state. To do.
[0009]
According to the configuration of the invention described in claim 3, when the vehicle speed is lower than the set vehicle speed when climbing on the slope, and the assist ratio is made larger than 1 when the pedal force exceeds the set pedal force, the pedal force is weak. It is possible for a person to climb a hill without a sense of incongruity, and when driving on a flat road, the assist ratio becomes 1 or less, so that it is possible to avoid unnecessarily increasing the load of the electric motor and extend the battery life. Can be accelerated on a flat road.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described based on examples of the present invention shown in the accompanying drawings.
[0011]
1 to 5 show a first embodiment of the present invention. FIG. 1 is a side view of a battery-assisted bicycle, FIG. 2 is a longitudinal side view of a motor unit, and is a sectional view taken along line 2-2 in FIG. 3 is a cross-sectional view taken along line 3-3 of FIG. 2, FIG. 4 is a block diagram showing the configuration of the control device for the electric motor, and FIG. 5 is a diagram showing the assist ratio according to the inclination angle.
[0012]
First, in FIG. 1, a front fork 13 to the head pipe 12 at the front end of a body frame 11 provided in the motor-assisted bicycle is supported steerably, the front wheel W F at the lower end of the front fork 13 is rotatably supported, a front fork 13 A bar handle 14 is provided at the upper end of the bar. A motor unit 16 having an electric motor 15 is provided at the lower part of the body frame 11. The motor unit 16 extends downward from the body frame 11 above the rear part of the motor unit 16 and extends substantially horizontally behind the motor unit 16. left issued, the rear wheel W R is rotatably supported to the right pair of rear forks 17 ... between the left and right pair of stays 18 ... are provided between the rear portion of the two rear fork 17 ... and the vehicle body frame 11. Further, a seat 19 is mounted on the rear portion of the vehicle body frame 11 so that the vertical position can be adjusted, and a carrier 20 is fixedly disposed on the rear side of the seat 19.
[0013]
A crankshaft 22 having crank pedals 21 and 21 at both ends is rotatably supported by the motor unit 16, and can transmit power from the crankshaft 22 and can also act as auxiliary power from the electric motor 15. a sprocket 24, an endless chain 26 is wound on the driven sprocket 25 provided to the axle of the rear wheel W R.
[0014]
A front basket 28 is attached to the head pipe 12 via a bracket 27. In addition, a battery storage case 29 disposed on the rear surface of the front basket 28 is also attached to the bracket 27, and a battery 30 for supplying electric power to the electric motor 15 is stored in the battery storage case 29 in a removable manner. The
[0015]
The operation of the electric motor 15 is controlled by a controller 31 fixedly supported on the lower side of the vehicle body frame 11 on the front side of the motor unit 16, and the controller 31 is electrically driven based on the pedaling force and the vehicle speed by the occupant. The operation of the motor 15 is controlled.
[0016]
Most of the body frame 11 is covered with a cover 32, and a main switch 33 for supplying electric power from the battery 30 to the controller 31 and the electric motor 15 is disposed on the cover 32.
[0017]
Referring to FIGS. 2 and 3 together, the casing 35 of the motor unit 16 is fixedly supported on the lower part of the vehicle body frame 11. A rotating cylinder 36 coupled to the drive sprocket 24 is rotatably supported via a ball bearing 37 on the right side (upper side in FIG. 3) of the casing 35, and the right end portion of the crankshaft 22 is The rotating cylinder 36 is supported via a needle bearing 38, and the left end portion of the crankshaft 22 is supported on the left side (lower side in FIG. 3) of the casing 35 via a ball bearing 39.
[0018]
The pedaling force applied by the crank pedals 21 and 21 at the left and right ends of the crankshaft 22 is transmitted from the crankshaft 22 to the drive sprocket 24 via the pedaling force transmission system 40. The output of the electric motor 15 attached to the casing 35 is transmitted to the drive sprocket 24 via the auxiliary power transmission system 41 so as to assist the pedaling force by the crank pedals 21 and 21.
[0019]
A pedaling force transmission system 40 for transmitting the power of the crankshaft 22 to the drive sprocket 24 includes a torsion bar 42 connected to the crankshaft 22 and a first one-way clutch 43 provided between the rotary cylinder 36 and the torsion bar 42. It consists of.
[0020]
The crankshaft 22 is provided with a slit 44 extending along the axis thereof, and the torsion bar 42 includes a columnar shaft portion 42a that is rotatably fitted in the slit 44, and a left end of the shaft portion 42. The arm portion 42b protruding from both sides from the upper end of FIG. 3 and the arm portion 42c protruding from the right end (lower end of FIG. 3) of the shaft portion 42a are attached to the slit 44. Therefore, the pedaling force can be transmitted to the other arm part 42c side while twisting and deforming the shaft part 42a according to the pedaling force input from the crankshaft 22 to the one arm part 42b.
[0021]
The first one-way clutch 43 is well known in the art, and when the crankshaft 22 is rotated forward by stepping on the crank pedals 21, 21, the pedaling force from the crankshaft 22 is applied to the torsion bar 42 and the first one-way clutch 43. Is transmitted to the drive sprocket 24 via the rotary cylinder 36. When the crankshaft 22 is reversed by stepping on the crank pedals 21, 21, the first one-way clutch 43 slips and the crankshaft 22 is reversely rotated. Permissible.
[0022]
A slider inner 45 is supported on the outer periphery of the crankshaft 22 so as not to rotate relative to the crankshaft and is relatively movable in the axial direction. The slider outer 46 rotates relative to the outer periphery of the slider inner 45 via a plurality of balls 47. It is supported freely.
[0023]
The slider inner 45 is cam-engaged with a clutch inner ring in the first one-way clutch 43, and an intermediate portion of a detection lever 48 supported so as to be swingable on the casing 35 is from a side opposite to the clutch inner ring. It abuts against the slider outer 46. On the other hand, a stroke sensor 49 which constitutes the pedal force detection means S T together with the detection lever 48 is attached to the casing 35, the tip of the detection lever 48 to the detector 49a of the stroke sensor 49 is in contact. Further, a spring 50 is contracted between the detection lever 48 and the casing 35, and the detection lever 48 is elastically brought into contact with the slider outer 46 by the spring force of the spring 50. The slider outer 46 and the slider inner 45 are The first one-way clutch 43 is biased toward the inner ring side of the clutch.
[0024]
When the torsion bar 42 is twisted in response to a pedaling force input from the crank pedals 21, 21 to the crankshaft 22, the slider inner 45 moves along the axis of the crankshaft 22 against the spring force of the spring 50 in FIG. 3. The detection lever 48 slid downward and moved by the slider outer 46 moving together with the slider inner 45 swings, whereby the detector 49 a of the stroke sensor 49 is pressed. Stroke of the detector 49a, the amount of torsion of the torsion bar 42, that is, in proportion to the pedal force inputted from the crank pedals 21, 21, so that the depression force by the pedaling force detecting means S T is detected.
[0025]
The auxiliary power transmission system 41 for transmitting the power of the electric motor 15 to the drive sprocket 24 includes a drive gear 52 fixed to the rotating shaft 15a of the electric motor 15, and one end of a first idle shaft 53 parallel to the rotating shaft 15a. A first intermediate gear 54 that is fixedly engaged with the drive gear 52, a second intermediate gear 55 that is provided integrally with the first idle shaft 53, and a third intermediate gear 56 that is engaged with the second intermediate gear 55. And a second idle shaft 57 disposed coaxially with the third intermediate gear 56, a second one-way clutch 58 provided between the third intermediate gear 56 and the second idle shaft 57, and the second idle shaft 57. And a driven gear 60 that is provided integrally with the rotating cylinder 36 to which the drive sprocket 24 is coupled and meshed with the fourth intermediate gear 59.
[0026]
In such an auxiliary power transmission system 41, the torque accompanying the operation of the electric motor 15 is decelerated and transmitted to the drive sprocket 24. When the operation of the electric motor 15 stops, the second one-way clutch 58 Due to the operation, the idling of the second idle shaft 57 is allowed, and the rotation of the drive sprocket 24 by the depression force of the crank pedals 21 and 21 is not hindered.
[0027]
In FIG. 4, a motor drive circuit 62 for driving the electric motor 15 is controlled by a controller 31. The controller 31 includes a pedaling force detection means S T , a vehicle speed detection means S V and an inclination angle detection means S A. The controller 31 outputs a signal for controlling the operation of the electric motor 15 based on the detection values of the detection means S T , S V , and S A.
[0028]
By the way, the vehicle speed detecting means S V detects the rotational speed of the electric motor 15 as representative of the bicycle speed in the power assist state by the electric motor 15, and as shown in FIGS. And an electromagnetic pickup coil type sensor 64. Thus, the reluctator 63 having the protrusion 63a on the outer periphery is fixed to the rotating shaft 15a of the electric motor 15, and the sensor 64 has a detection part 64a that can be close to and opposed to the protrusion 63a and is fixed to the casing 35. Is done.
[0029]
The inclination angle detecting means S A is used to detect the inclination angle of the road surface, preferably be attached to the body frame 11 in the vicinity of the crankshaft 22 in order not undergo much influence on the vehicle body behavior Further, in order to quickly detect a change in the tilt angle, it is desirable that the head pipe 12 is attached to the vehicle body frame 11 in the vicinity.
[0030]
In the controller 31, when value detected by the vehicle speed detecting means S V is a value corresponding to the low in-speed range, the assist ratio is the ratio of assist power by the electric motor 15 relative to the pedal effort by human power (auxiliary power / pedaling force) as shown in Figure 5, the detection value of the tilt angle detecting means S a i.e. according to the inclination angle are set in advance. That is set in the assist ratio is "1" when the inclination angle detected by the inclination angle detecting means S A is less than or equal to the first set value theta 1 example 2 degrees, the inclination angle detected by the inclination angle detecting means S A is when the first outside of the allowable inclination angle theta larger second set inclination angle theta 2 than 1 is set in the assist ratio is "3", the inclination angle detecting means S tilt angle first setting inclination angle detected by the a theta 1 And the assist ratio is set to linearly increase from “1” to “3” as the tilt angle increases when the tilt angle is less than the second set tilt angle θ 2 .
[0031]
Next, to explain the action of this first embodiment, when climbing the slope inclination angle detected by the inclination angle detecting means S A is first set value theta 1 or more, and the assist ratio according to the inclination angle "1 Therefore, the auxiliary power can be increased according to the pedaling force to be obtained regardless of the traveling speed, and even a person with weak pedaling force can easily climb the hill without a sense of incongruity.
[0032]
Moreover, when the inclination angle detected by the inclination angle detecting means S A becomes the first set value theta 1 large second set value theta 2 or more than, since the assist ratio is set to "3", the inclination angle Even if it increases, the assist ratio does not increase unnecessarily, and it is possible to climb the hill without difficulty by avoiding battery consumption and adding the necessary auxiliary power to the pedaling force.
[0033]
Figure 6 shows a second embodiment of the present invention, the assist ratio is set according to the inclination angle detected by the vehicle speed detecting means speed and tilt angle detection means is detected by the S V S A. That is, when the detection value of the tilt angle detecting means S A vehicle speed detected by the vehicle speed detecting means S V is less than or equal set speed defined for example 10 km / h is first set inclination angle theta 1 or more, a decrease in vehicle speed As the inclination angle increases, the assist ratio is set so that it gradually increases from “1” and becomes “3” when the vehicle speed is equal to or greater than the second set inclination angle θ 2 and the vehicle speed is, for example, 5 km / h or less. . Further, even when the vehicle speed exceeds 10 km / h, for example, up to 15 km / h, and the vehicle speed is 10 km / h or less, the assist ratio becomes “1” when the inclination angle is less than the first set inclination angle θ 1. In addition, in a high speed range where the vehicle speed exceeds 15 km / h, for example, the assist ratio gradually decreases from “1”, and the power assist by the electric motor 15 is stopped when the vehicle speed reaches, for example, 24 km / h. Is done.
[0034]
According to the second embodiment, when traveling on a flat road, the assist ratio is set to “1” or less to avoid unnecessarily increasing the load of the electric motor 15, thereby extending the battery life and flattening. For example, when climbing a hill at a low speed of 10 km / h or less, even if a person with weak treading power is able to avoid accelerating indefinitely on the road, It is possible to climb the slope without a sense of incongruity.
[0035]
As a third embodiment of the present invention, as shown in FIG. 7, the reduction ratio of the assist ratio according to the increase in vehicle speed may be made smaller than that in the second embodiment of FIG. The effect similar to the said 2nd Example can be acquired also by an example.
[0036]
Figure 8 shows a fourth embodiment of the present invention, are set according to the inclination angle assist ratio is detected by the vehicle speed and pedaling force detecting means S T is detected by the vehicle speed detecting means S V. That is, when the detected value of the pedal force detection means S T vehicle speed detected by the vehicle speed detecting means S V is less than or equal set speed defined for example 10 km / h is first set pedal force above T 1 is reduced in the vehicle speed and the inclination As the angle increases, the value gradually increases from “1” and is equal to or greater than “2” when the vehicle speed is, for example, 5 km / h or less when the vehicle has a second set pedal force T 2 greater than the first set pedal force T 1. An assist ratio is set. In addition, the assist ratio is set to “1” when the pedaling force is less than the first set pedaling force T 1 even when the vehicle speed exceeds 10 km / h, for example, up to 15 km / h, and the vehicle speed is 10 km / h or less. Furthermore, in a high speed range where the vehicle speed exceeds 15 km / h, for example, the assist ratio gradually decreases from “1”, and is set to stop the power assist by the electric motor 15 when the vehicle speed reaches, for example, 24 km / h. .
[0037]
According to the fourth embodiment, when traveling on a flat road, the assist ratio is set to “1” or less to avoid unnecessarily increasing the load of the electric motor 15, thereby extending the battery life and flattening. For example, when climbing a hill where the pedaling force is equal to or higher than the first set value T 1 at a low speed of 10 km / h or less, the assist ratio is set to “1”. By increasing the height, even people with weak pedaling ability can climb the hill without a sense of incongruity.
[0038]
Although the embodiments of the present invention have been described in detail above, the present invention is not limited to the above-described embodiments, and various design changes can be made without departing from the present invention described in the claims. Is possible.
[0039]
【The invention's effect】
As described above, according to the first aspect of the present invention, the auxiliary power can be increased according to the pedaling force to be obtained regardless of the traveling speed, and even a person with weak pedaling force can easily climb the hill without a sense of incongruity. . When traveling on a flat road, the assist ratio is 1 .
[0040]
According to the second aspect of the present invention, even when a person with weak pedaling force feels uncomfortable, the assist ratio is made larger than 1 when climbing a hill where the vehicle speed is equal to or lower than the set vehicle speed and the tilt angle is equal to or greater than the set tilt angle. It is possible to climb the hill without running, and to avoid unnecessarily increasing the load of the electric motor when traveling on a flat road, it is possible to extend the battery life, and it is accelerated evenly on a flat road Absent.
[0041]
Furthermore, according to the invention described in claim 3, by increasing the assist ratio above 1 when climbing the hill where the vehicle speed is equal to or lower than the set vehicle speed and the pedaling force is equal to or higher than the set pedaling force, even a person with weak pedaling force feels uncomfortable. It is possible to increase the battery life by avoiding unnecessarily increasing the load of the electric motor when traveling on a flat road, and it is not accelerated on the flat road.
[Brief description of the drawings]
FIG. 1 is a side view of a battery-assisted bicycle according to a first embodiment.
FIG. 2 is a longitudinal side view of the motor unit, and is a cross-sectional view taken along line 2-2 of FIG.
3 is a cross-sectional view taken along line 3-3 of FIG.
FIG. 4 is a block diagram showing a configuration of an electric motor control device.
FIG. 5 is a diagram illustrating an assist ratio according to an inclination angle.
FIG. 6 is a diagram illustrating an assist ratio according to an inclination angle and a vehicle speed according to the second embodiment.
FIG. 7 is a diagram illustrating an assist ratio according to an inclination angle and a vehicle speed according to a third embodiment.
FIG. 8 is a diagram illustrating an assist ratio according to a pedaling force and a vehicle speed according to a fourth embodiment.
[Explanation of symbols]
15 ... electric motor 31 ... controller S A ... inclination angle detecting means S T.. Pedaling force detecting means S V ... vehicle speed detecting means

Claims (3)

  1. A pedal force detection means for detecting a depression force by human power (S T), and an electric motor (15) capable of exhibiting auxiliary power in accordance with the detected value of the tread force detecting means (S T), the electric motor relative to the pedal effort by human power in a motor-assisted bicycle capable of changing the assist ratio which is the ratio of the auxiliary power according to (15), the inclination angle detection means for detecting the inclination angle of the road surface and (S a), the detection of the inclination angle detecting means (S a) When the value is greater than or equal to a set value, the assist ratio greater than 1 is increased as the tilt angle increases, and when the detected value of the tilt angle detecting means (S A ) is less than the set value, And a controller (31) for controlling the operation of the electric motor (15) so that the assist ratio is 1 , an auxiliary power control device for a battery-assisted bicycle.
  2. A pedal force detection means for detecting a depression force by human power (S T), and an electric motor (15) capable of exhibiting auxiliary power in accordance with the detected value of the tread force detecting means (S T), the electric motor relative to the pedal effort by human power In the battery-assisted bicycle capable of changing the assist ratio that is the ratio of the assist power according to (15), the tilt angle detecting means (S A ) for detecting the tilt angle of the traveling road surface, the vehicle speed detecting means (S V ), the vehicle speed In the first state where the detection value of the detection means (S V ) is equal to or lower than the set speed and the detection value of the inclination angle detection means (S A ) is equal to or greater than the set inclination angle, the assist ratio is set to a value greater than 1. And a controller (31) for controlling the operation of the electric motor (15) so that the assist ratio is 1 or less in a state other than the first state. Control equipment .
  3. A pedal force detection means for detecting a depression force by human power (S T), and an electric motor (15) capable of exhibiting auxiliary power in accordance with the detected value of the tread force detecting means (S T), the electric motor relative to the pedal effort by human power in a motor-assisted bicycle capable of changing the assist ratio which is the ratio of the auxiliary power according to (15), a vehicle speed detecting means (S V), the pedaling force detection value is not more than the set speed of the vehicle speed detecting means (S V) The assist ratio is set to a value greater than 1 in the first state where the detection value of the detection means (S T ) is equal to or greater than the set pedaling force, and the assist ratio is set to 1 or less in cases other than the first state. And a controller (31) for controlling the operation of the electric motor (15).
JP19553097A 1997-07-22 1997-07-22 Auxiliary power control device for battery-assisted bicycle Expired - Fee Related JP3974974B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP19553097A JP3974974B2 (en) 1997-07-22 1997-07-22 Auxiliary power control device for battery-assisted bicycle

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
JP19553097A JP3974974B2 (en) 1997-07-22 1997-07-22 Auxiliary power control device for battery-assisted bicycle
TW87111209A TW409105B (en) 1997-07-22 1998-07-10 Auxiliary power control unit for auxiliary electromotive bicycle
ES98113316T ES2229425T3 (en) 1997-07-22 1998-07-16 Bike control device with auxiliary motor.
DE1998626076 DE69826076T2 (en) 1997-07-22 1998-07-16 Control device for bicycle with auxiliary engine
EP19980113316 EP0893338B1 (en) 1997-07-22 1998-07-16 Assist force control device in motor-assisted bicycle
CN98116132A CN1111486C (en) 1997-07-22 1998-07-21 Auxiliary propulsion-unit control device for use in electric auxiliary bike

Publications (2)

Publication Number Publication Date
JPH1134966A JPH1134966A (en) 1999-02-09
JP3974974B2 true JP3974974B2 (en) 2007-09-12

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JP19553097A Expired - Fee Related JP3974974B2 (en) 1997-07-22 1997-07-22 Auxiliary power control device for battery-assisted bicycle

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Cited By (3)

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US9840305B1 (en) 2016-05-30 2017-12-12 Shimano Inc. Bicycle control device and bicycle control system
US10421519B2 (en) 2016-06-14 2019-09-24 Shimano Inc. Bicycle controller
US10507886B2 (en) 2016-07-29 2019-12-17 Shimano Inc. Bicycle controller

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Publication number Priority date Publication date Assignee Title
JP4641740B2 (en) * 2004-05-24 2011-03-02 パナソニック株式会社 Vehicle with auxiliary power unit
JP2005335534A (en) * 2004-05-27 2005-12-08 Matsushita Electric Ind Co Ltd Vehicle with auxiliary power unit
JP6254878B2 (en) * 2014-03-24 2017-12-27 ブリヂストンサイクル株式会社 Electric assist bicycle
JP2019137119A (en) 2018-02-07 2019-08-22 ヤマハ発動機株式会社 Power-assisted bicycle and drive system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9840305B1 (en) 2016-05-30 2017-12-12 Shimano Inc. Bicycle control device and bicycle control system
US10421519B2 (en) 2016-06-14 2019-09-24 Shimano Inc. Bicycle controller
US10507886B2 (en) 2016-07-29 2019-12-17 Shimano Inc. Bicycle controller

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