JP2010120599A - Electric bicycle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electric bicycle having no concern that a bicycle body becomes unstable in starting and the bicycle is backward moved on an upslope by starting traveling by properly driving an in-wheel motor 9 when a driver turns a starting switch 12 ON. <P>SOLUTION: The electric bicycle is provided with a pedal 6 rotated by stepping it by the foot of the driver; a rotation speed detector 10 for detecting a rotation speed of the pedal 6; and a rotation pedal driving control means 16 for driving/controlling the in-wheel motor 9 for driving a rear wheel 2 according to the rotation speed of the pedal 6 detected by the rotation speed detector 10. The electric bicycle is provided with the starting switch 12 to be turned ON by the driver; and a starting switch driving control means 17 for driving/controlling the in-wheel motor 9 so as to rotate it at a constant speed at a low speed when the starting switch 12 is turned ON. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an electric vehicle that uses, as an accelerator, a pedal that is rotated with a foot.

  Conventionally developed is an electric vehicle that travels by driving the driving wheels by detecting the rotational speed when the driver steps on the pedal and rotating it, and driving the electric motor for driving according to this rotational speed (For example, refer to Patent Document 1). This electric vehicle is different from the electric assist bicycle in that it does not transmit the rotational force of the pedal to the drive wheels via a transmission device such as a chain. In addition, like an electric motorcycle, the drive electric motor is driven and controlled according to the rotation angle when the handlebar grip is turned by hand and the depression angle when the accelerator pedal on the floor is stepped on with a foot. Unlike the above, the driving electric motor is driven and controlled according to the rotation speed when the pedal is rotated with the foot.

  Here, it is easy to reach the maximum accelerator operation (full throttle) easily by turning or stepping on the accelerator grip or accelerator pedal of an electric motorcycle, etc., and handling is necessary due to sudden acceleration. It becomes. If the maximum speed of an electric motorcycle or the like is limited to, for example, 20 km / h, the maximum speed is reached immediately by a simple operation of turning the accelerator grip or depressing the accelerator pedal. Stress tends to accumulate to resist the demand to do.

  However, in the case of the electric vehicle, in order to perform the maximum accelerator operation, it is necessary to rotate the pedal at a high speed, and the maximum accelerator operation cannot be easily reached. In addition, even if the maximum speed is limited to 20 km / h, this electric vehicle needs to be pedaled at a somewhat high rotational speed in order to reach this maximum speed. The driver has to keep pedaling at a high rotational speed, so the driver is fully satisfied with the modest speed and does not want to maintain the maximum speed for an extended period of time.

Therefore, unlike the case of electric motorcycles, the above-mentioned electric vehicle provides a safe and easy-to-handle vehicle that can be driven at a relatively slow speed similar to a bicycle and the driver can drive with a relaxed feeling. can do. Moreover, unlike bicycles and electrically assisted bicycles, even when climbing uphill, there is no effect on the pedaling force and it can be driven in the same way as on a flat surface. A driver with relatively weak physical strength, such as a disabled person or a disabled person, can also drive.
JP-A-8-108881

  However, an electric vehicle that controls the drive electric motor according to the rotation speed when the pedal is rotated with a foot as described above is actually a prototype vehicle and a test ride. It turned out that the vehicle body tends to become unstable, especially when going uphill, making it difficult to start on a slope.

  In other words, in the case of a two-wheeled vehicle, for example, the vehicle stops with both feet on the road while straddling the saddle, but at the time of starting, it is necessary to step on the pedal with at least one foot away from the road surface. Tends to be unstable. In addition, since the drive electric motor is driven and controlled in accordance with the rotation speed of the pedal, sufficient starting torque is not generated unless the pedal is rotated at a certain speed. Unstable state continues until the vehicle rises sufficiently, and more skill and procedures are required than when starting a bicycle.

  Moreover, the above problem applies to some extent not only in the case of a two-wheeled vehicle but also in the case of a four-wheeled vehicle in which auxiliary wheels are attached to the left and right of the rear wheel of the two-wheeled vehicle. Such a four-wheeled vehicle is self-supporting even if the driver straddles the saddle and lifts both feet off the road surface. is there. However, such auxiliary wheels are often mounted so as to be able to swing up and down while being biased downward in order to cope with the left-right inclination of the vehicle body when traveling. Even if the driver is standing alone, if the driver's body swings to the left or right to pedal, the body may tilt to the left or right in response to the support wheel, which may cause the vehicle to become unstable. Occurs.

  However, in the case of a two-wheeled four-wheeled vehicle or a two-wheeled three-wheeled vehicle at the front and rear, the above problems hardly occur because the self-supporting stability at the time of stopping is high. However, since a larger starting torque is required when starting up an uphill, not only a two-wheeled vehicle but also a three-wheeled vehicle or a four-wheeled or more electric vehicle is difficult to start.

  That is, on the uphill, the vehicle moves backward (reverses) just by separating both feet from the road surface, and it is necessary to obtain a starting torque much larger than that on flat ground in order to start against this vehicle reverse. Therefore, as soon as you remove your foot from the road surface, you must immediately hit the pedal to reach a high rotational speed, even if it is a tricycle or quadricycle that does not become unstable because the car body is independent. However, starting is not easy. In addition, when the drive electric motor is not driven and controlled so as to have a predetermined traveling speed corresponding to the rotational speed of the pedal, but is controlled so as to generate a predetermined torque corresponding to the rotational speed of the pedal. In order to obtain this large starting torque at the time of starting, it is necessary to rotate the pedal at a considerably high speed, which makes starting extremely difficult.

  Therefore, when starting up an uphill slope, a very advanced driving skill is required to increase the pedal rotation speed while gradually weakening the hand brake so that the vehicle does not move backwards. Starting was virtually impossible. It is also possible to prevent the vehicle from reversing by preventing the wheels from reversing with a one-way clutch, etc., but if the vehicle does not retreat, the driver will push the electric vehicle and walk around to change the direction and put in and out of the garage. It becomes extremely inconvenient when doing.

  In the present invention, when the driver turns on the start switch, the driving electric motor is appropriately driven to start traveling, so that the vehicle body becomes unstable at the time of starting or the vehicle moves backward on an uphill. It is intended to provide an electric vehicle without it.

  According to the first aspect of the present invention, there is provided a pedal that is rotated by a driver stepping on a foot, a rotational speed detector that detects a rotational speed of the pedal, and a drive that is driven according to the rotational speed of the pedal detected by the rotational speed detector. In an electric vehicle equipped with a rotary pedal drive control means for driving and controlling a driving electric motor for driving a wheel, a driving switch operated by the driver from OFF to ON, and driving when the starting switch is ON And a start switch drive control means for driving and controlling the electric motor according to a predetermined program.

  According to a second aspect of the present invention, when the start switch is ON and the rotation speed detector detects rotation of the pedal at a predetermined speed or higher, the drive electric motor is driven not by the start switch drive control means but by the rotary pedal drive control means. Rotating pedal drive control priority means for performing motor drive control is provided.

  According to a third aspect of the present invention, there is provided a seating detector for detecting that the electric vehicle is seated in the driver's seat, and when the seating detector does not detect the seating, driving by the rotary pedal drive control means. And a seating control means that restricts the drive control of the electric motor and does not restrict the drive control of the driving electric motor by the start switch drive control means regardless of whether the seating detector detects the seating. Features.

  According to the first aspect of the present invention, when the driver operates the start switch to turn it on, the start switch drive control means controls the drive electric motor according to a predetermined program. If the car can be started and the running is stabilized by this, a normal operation can be performed by stroking the pedal. Therefore, the driver can start with the feet still on the road surface, so that the vehicle body can be prevented from becoming unstable when starting, and the vehicle body can move backward even when starting uphill. Can be prevented.

  According to the invention of claim 2, even if the pedal is pushed with the start switch turned on after starting, if the rotational speed of the pedal exceeds a predetermined speed, the drive control of the drive electric motor is automatically started by the start switch drive. Since the control means shifts to the rotary pedal drive control means, the driver does not need to worry about the timing for returning the start switch to OFF. Further, even if the start switch is mistakenly turned on during a normal operation by stroking the pedal, the drive control of the drive electric motor does not switch to the start switch drive control means.

  The start switch may be turned off by the driver, or may be automatically turned off when shifting to normal driving. However, even when the driver returns to the OFF state, it is not preferable that the driver needs to perform another operation, such as a toggle switch, because the operation may be forgotten.

  The start switch is preferably a push button switch that is turned on when the hand is pressed and turned off when the hand is released. In this way, if the start switch is pushed by hand and turned on, the vehicle will start, and if it shifts to normal operation, it will return to OFF just by releasing the start switch. You can eliminate the risk of forgetting.

  The drive control according to the predetermined program by the start switch drive control means is preferably speed control for rotating the drive electric motor at a predetermined constant speed. In this way, when the start switch is turned on, speed control is performed so that the drive electric motor rotates at a predetermined constant speed. Therefore, it is necessary depending on whether the road surface is a slope or a flat ground when starting. In some cases, a sufficiently large starting torque can be obtained, and after starting, for example, a constant speed running is performed at a low speed of about 6 km / h. It is possible to shift to normal operation.

  According to the invention of claim 3, when the driver is not seated in the driver's seat, it is possible to prevent the electric vehicle from erroneously starting by accidentally rotating the pedal, so that the safety of the electric vehicle is improved. be able to. Moreover, if the driver does not sit in the driver's seat and turns on the start switch while pushing the electric vehicle while walking, the electric vehicle will run at a constant speed, for example, at a low speed. It is possible to assist the driver in pushing the electric vehicle from time to time.

  The electric vehicle is preferably a two-wheeled vehicle including only two wheels, a front wheel and a rear wheel, or a four-wheeled vehicle having auxiliary wheels attached to the left and right of the rear wheel of the two-wheeled vehicle. In particular, in the case of a two-wheeled vehicle where the vehicle body is not stable when the vehicle is stopped, or a four-wheeled vehicle using auxiliary wheels that may be unstable when the vehicle is stopped, the vehicle body can be prevented from becoming unstable when starting. Because it can.

  Hereinafter, the best embodiment of the present invention will be described with reference to FIGS.

  In the present embodiment, an electric vehicle as shown in FIGS. 1 and 2 will be described. This electric vehicle is a four-wheeled vehicle including a front wheel 1 as a steering wheel and a rear wheel 2 as a driving wheel, and a pair of auxiliary wheels 3 and 3 on the left and right of the rear wheel 2. . Each auxiliary wheel 3 is a driven wheel having a diameter slightly smaller than that of the rear wheel 2, and is attached so as to be movable up and down while being urged downward with respect to the frame of the electric vehicle.

  In this electric vehicle, the driver 6 steps the pedal 6 with his / her foot while rotating the front wheel 1 by straddling the saddle 4 and holding the handle 5 with both hands. However, this electric vehicle is not driven by transmitting the rotational force when the pedal 6 is squeezed to the rear wheel 2 like a bicycle or an electric power assisted bicycle, but by a storage battery 8 housed under the loading platform 7. The rear wheel 2 is driven by rotating an in-wheel motor 9 directly connected to the second axle. The pedal 6 detects the rotational speed when the pedal 6 is stepped on with the foot by the rotational speed detector 10 and controls the driving of the in-wheel motor 9 according to the rotational speed detected by the rotational speed detector 10. It is like that.

  The handle 5 is attached with grips 11 and 11 for gripping with the left and right ends (in FIG. 1, the left side of the handle 5 is not shown and only the right side grip 11 is visible). A start switch 12 is attached to the base portion of the right grip 11. The start switch 12 is a push button switch having a button protruding inside the handle 5 and can be pushed with the thumb of the right hand holding the grip 11 on the right side. Further, the push button switch of the start switch 12 is turned on while the button is pushed in, and when the button is released, the push button switch is returned by a spring and turned off.

  Between the saddle 4 and a pole 13 for attaching the saddle 4 to the frame, a seating detector 14 for detecting that the driver is seated across the saddle 4 is attached. The seating detector 14 includes a pressure sensor and the like, and is turned on while the driver is seated and turned off when the driver is separated from the saddle 4.

  Below the handle 5 in front of the frame of the electric vehicle, a microcomputer 15 is housed in a housing to which a hidden headlamp or the like is attached. As shown in FIG. 3, the microcomputer 15 includes a signal indicating the rotational speed of the pedal 6 detected by the rotational speed detector 10, an ON / OFF detection signal of the start switch 12, and an ON state of the seating detector 14. / OFF detection signal is input. The in-wheel motor 9 is driven by the drive signal from the microcomputer 15 so that the rear wheel 2 is rotated. The in-wheel motor 9 includes a brushless DC motor and its driver. In this embodiment, the speed of the brushless DC motor is controlled. This driver supplies power from the storage battery 8 to the brushless DC motor. Speed control is performed so as to rotate at a rotation speed instructed by a drive signal from the microcomputer 15.

  In the microcomputer 15, a rotary pedal drive control means 16, a start switch drive control means 17, a seating control means 18, and a rotary pedal priority means 19 are stored in the EEPROM as programs. When the rotation pedal drive control means 16 receives a signal indicating the rotation speed of the pedal 6 from the rotation speed detector 10, the rotation pedal drive control means 16 instructs the rotation speed of the in-wheel motor 9 corresponding to this signal (travel speed of the electric vehicle). This is a program that outputs a driving signal to be output. Accordingly, when the driver turns the pedal 6 and rotates it, the speed of the in-wheel motor 9 is controlled so that the electric vehicle travels at a speed corresponding to the rotational speed of the pedal 6. For this reason, even if the load changes not only on the flat ground but also on the up and down slopes, as long as the pedal 6 is stroked at the same rotational speed, the torque of the in-wheel motor 9 changes and the electric vehicle runs at the same speed Can be made.

  Further, since only a load for rotating the rotation speed detector 10 is applied to the pedal 6, the pedal rotation load for the driver to rotate the pedal 6 hardly changes. However, in order not to increase the traveling speed too much, the pedal rotational load may be increased as the rotational speed of the pedal 6 increases, or the pedal rotational load may be increased when the pedal 6 exceeds a certain rotational speed. Well, in order to make it easier to feel that you are climbing a hill, a load is intentionally applied to the rotation of the pedal 6, such as slightly increasing the pedal rotation load according to the load caused by the slope of this hill. It can also be done.

  The start switch drive control means 17 receives an ON / OFF detection signal of the start switch 12, and the in-wheel motor is such that the traveling speed of the electric vehicle is 6 km / h only when this detection signal is ON. 9 is a program for outputting a drive signal instructing the rotation speed of 9. Therefore, if the driver pushes the start switch 12 to turn it on when the vehicle is stopped, the in-wheel motor 9 rotates and the electric vehicle can start running at a low speed.

  The drive signal output by the rotary pedal drive control means 16 is output to the in-wheel motor 9 via the seating control means 18 and the rotary pedal priority means 19. The seating control means 18 is a program that permits the output of the drive signal from the rotary pedal drive control means 16 only when an ON detection signal indicating that the driver is seated is input from the seating detector 14.

  Accordingly, even if the pedal 6 rotates while the driver is not seated on the saddle 4, the rotary pedal drive control means 16 outputs a drive signal to the in-wheel motor 9 and the electric vehicle starts carelessly. Can be prevented. However, since the driver may float or stand while driving the electric vehicle, the electric vehicle will be powered if the seating control means 18 cuts off the output of the drive signal even in this case. There is a risk of losing and stopping. Therefore, the seating control means 18 limits the output of the drive signal of the rotary pedal drive control means 16 only for a certain period after the start of the electric vehicle, or uses a sensor other than the seating detector 14 to allow the driver to saddle. You may make it sure that it is on 4.

  The drive signal output from the start switch drive control means 17 is output to the in-wheel motor 9 via the rotary pedal priority means 19. Even when the start switch drive control means 17 outputs a drive signal by outputting a detection signal indicating that the start switch 12 is ON, the rotation pedal priority means 19 rotates the pedal 6 and the rotation speed detector 10. When the rotary pedal drive control means 16 starts outputting the drive signal by outputting a signal indicating the rotation speed, the drive signal of the start switch drive control means 17 is cut off and the rotation pedal drive control means 16 is driven. This is a program for giving priority to signals and outputting them to the in-wheel motor 9.

  However, if the pedal 6 is slightly rotated immediately after the driver leaves the road surface and puts it on the pedal 6 or slowly so as not to reach the low traveling speed by the start switch drive control means 17 yet. Even when the vehicle starts to rotate at the speed, the driving speed of the start switch drive control means 17 is switched to the drive signal of the rotary pedal drive control means 16 so that the low-speed traveling speed decreases to a slower speed. Become. Therefore, the rotary pedal priority means 19 starts to rotate at a predetermined speed or higher so that the pedal 6 corresponds to a traveling speed of, for example, 5 km / h, and the rotational speed detector 10 outputs a signal indicating the rotational speed higher than the predetermined speed. The drive signal of the start switch drive control means 17 is switched to the drive signal of the rotary pedal drive control means 16 only when the rotation pedal drive control means 16 starts outputting the corresponding drive signal.

  It should be noted that the rotation pedal priority means 19 has a slight rotation so that the rotation speed of the pedal 6 is very close to 0 unless the lowering of the traveling speed to a lower speed than the low speed is not a problem. It is also possible to switch the drive signal by detecting this. That is, in this case, the predetermined rotational speed of the pedal 6 may be set to a value very close to zero. Further, the rotation pedal priority means 19 only needs to detect the rotation of the pedal 6 at a predetermined speed or higher and switch the drive signal. A signal output from the speed detector 10 may be input, and it may be detected whether or not the signal indicates a rotation of the pedal 6 at a predetermined speed or higher.

  Even if the driver pushes the start switch 12 to start the electric vehicle by the operation of the rotary pedal priority means 19, if the pedal 6 is pushed out while the start switch 12 is pressed, the low speed by the start switch drive control means 17 is reduced. It is possible to switch from constant speed traveling to normal traveling at a speed corresponding to the rotational speed of the pedal 6 by the rotary pedal drive control means 16. The driver normally releases the start switch 12 and turns it off after the travel is switched.

  Since the seating control means 18 and the rotary pedal priority means 19 are programs executed by the microcomputer 15 as in the case of the rotary pedal drive control means 16 and the start switch drive control means 17 in this embodiment, these rotary pedals are used. The outputs of the drive control means 16 and the start switch drive control means 17 are not cut off or switched in a circuit.

  That is, the seating control means 18 monitors the output of the seating detector 14 at any time or for a certain period after the start in the program of the rotary pedal drive control means 16, for example, and the detection signal of this seating detector 14 is OFF. If this is detected, it can be configured by a routine that terminates the execution of the program of the rotary pedal drive control means 16. Further, the rotary pedal priority means 19 monitors the output of the rotational speed detector 10 at any time in the program of the start switch drive control means 17, for example, and this rotational speed detector 10 rotates the pedal 6 at a predetermined speed or higher. When it is detected that the signal shown is output, it can be constituted by a routine that terminates the execution of the program of the start switch drive control means 17. Further, the seating control means 18 and the rotary pedal priority means 19 can be configured by an interrupt routine that is activated in response to signals output from the seating detector 14 and the rotational speed detector 10.

  Further, the rotary pedal drive control means 16 and the start switch drive control means 17 are composed of the same program, and the drive signals are switched and output according to the output state of the rotation speed detector 10 and the start switch 12. Also good. In addition, in this case, the rotary pedal priority means 19 can be configured by a routine for switching drive signals in accordance with the output states of the rotational speed detector 10 and the start switch 12.

  According to the electric vehicle having the above-described configuration, when the driver presses the start switch 12 with both feet on the road surface when the vehicle is stopped, the electric vehicle starts running at a constant low speed, so that the vehicle body remains stable. The electric vehicle can be started easily. And if a driver | operator's driving | running | working of an electric vehicle is stabilized, a driver | operator should just drive the pedal 6 and perform a normal driving | operation. Therefore, the electric vehicle does not have a possibility that the vehicle body becomes unstable at the time of starting, and can prevent the vehicle body from moving backward even in the case of starting uphill.

  When the pedal 6 is turned off, the rotary pedal priority means 19 automatically switches from running at a low constant speed by the start switch 12 to normal running at a speed corresponding to the rotational speed of the pedal 6. There is no need to worry about the timing of turning off the switch 12. Moreover, since the start switch 12 returns to the OFF state only by releasing the hand, there is no possibility of forgetting to return the start switch 12 to the OFF state. Further, when the vehicle 6 is traveling normally by stroking the pedal 6, it is possible to prevent the vehicle from being switched to traveling at a constant low speed even if the start switch 12 is accidentally pressed.

  For safety reasons, the seating control means 18 shuts off the drive signal output from the rotary pedal drive control means 16 even when the pedal 6 rotates when the driver is not seated. However, even when the driver is not seated, the drive signal output by the start switch drive control means 17 is not cut off, so that the electric vehicle is driven at low speed by pressing the start switch 12. be able to. Therefore, for example, when the driver pushes the electric vehicle while pushing up the electric vehicle while walking uphill or loading a heavy load, the driver can walk easily with little use of the force of pressing the electric vehicle.

  In the above embodiment, the start switch 12 is a push button switch. However, any switch may be used as long as the driver operates ON / OFF. However, in order to prevent forgetting to operate OFF, a lever switch or the like that returns to OFF when the operation is stopped is preferable to a toggle switch or the like. In addition, a switch with an operational feeling is preferable to a proximity detection switch or the like. Furthermore, since the driver attaches both feet to the road surface before starting and stabilizes the vehicle body, the start switch 12 is preferably a switch operated by hand, but may be operated by a body part other than the hand, For example, even if it is a foot operation, if it can be easily operated with one foot, there is almost no possibility of destabilizing the vehicle body before starting.

  Further, the start switch 12 does not necessarily have to be turned from ON to OFF by the operation of the driver. For example, when the rotary pedal priority means 19 detects the rotation of the pedal 6 at a predetermined speed or higher, the start switch 12 is automatically turned OFF. You may do it. Therefore, the start switch 12 may be any switch that is operated at least by the driver from OFF to ON.

  In the above embodiment, when the rotation of the pedal 6 becomes faster and exceeds a predetermined speed, the rotation pedal priority means 19 cuts off the drive signal of the start switch drive control means 17. The rotation pedal priority control means 19 is a drive signal for the rotation pedal drive control means 16 when the output of the drive signal of the rotation pedal drive control means 16 and the output of the drive signal of the start switch drive control means 17 overlap. It is sufficient to operate so as to give priority to the output of. Thereby, even if the driver presses the pedal 6 and presses the start switch 12 in the middle of normal driving, it is possible to prevent the driver from switching to low speed constant speed driving.

  The rotation speed detector 10 shown in the above embodiment is any detector that detects the rotation speed of the pedal 6 (the number of rotations per unit time or the rotation angle per unit time). Alternatively, for example, a dynamo power generation voltage may be used as a detection output, or a detector that detects the approach of a gear-like protrusion rotating with the pedal 6 using a magnetic sensor or the like may be used.

  In the above embodiment, the case where the rotary pedal drive control means 16 and the start switch drive control means 17 perform the speed control by instructing the rotation speed to the in-wheel motor 9 is shown. For example, the rotary pedal drive control means 16 can control the in-wheel motor 9 to output a torque corresponding to the rotational speed of the pedal 6. In addition, the start switch drive control means 17 may perform speed control so that the traveling speed gradually increases to a certain extent, for example, instead of speed control so that the electric vehicle has a constant traveling speed. . In other words, the drive control by the rotary pedal drive control means 16 and the start switch drive control means 17 can be appropriately improved so that the electric vehicle can be operated and started more appropriately.

  Moreover, although the case where the in-wheel motor 9 was a brushless DC motor was shown in the said embodiment, the kind of this electric motor for a drive is arbitrary. Furthermore, not only the in-wheel motor 9 directly connected to the axle of the rear wheel 2 as described above, but also another driving electric motor that drives the rear wheel 2 through a transmission device can be used.

  In the above embodiment, the case where the rotary pedal drive control means 16 and the start switch drive control means 17 are configured by the microcomputer 15 has been described. However, these configurations are arbitrary, and a normal digital circuit, analog circuit, It can also be configured by other control means.

  In the above embodiment, the case where the electric vehicle is a four-wheel vehicle including the front wheel 1, the rear wheel 2, and the left and right auxiliary wheels 3, 3 is shown. However, the electric vehicle is driven by a drive electric motor. Any vehicle may be used as long as it has at least one drive wheel, such as a two-wheeled vehicle without auxiliary wheels 3 and 3, a four-wheeled vehicle with two front and rear wheels, or a three-wheeled vehicle with two front and rear wheels. May be.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an overall side view illustrating a configuration of an electric vehicle according to an embodiment of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an overall rear view showing a configuration of an electric vehicle according to an embodiment of the present invention. 1 is a block diagram illustrating a configuration of a drive control unit of an electric vehicle according to an embodiment of the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Front wheel 2 Rear wheel 3 Auxiliary wheel 4 Saddle 5 Handle 6 Pedal 7 Loading platform 8 Storage battery 9 In-wheel motor 10 Rotation speed detector 11 Grip 12 Start switch 13 Pole 14 Seating detector 15 Microcomputer 16 Rotation pedal drive control means 17 Start Switch drive control means 18 Seating control means 19 Rotating pedal priority means

Claims (3)

A pedal that the driver steps with his / her foot to rotate, a rotation speed detector that detects the rotation speed of the pedal, and a drive for driving the drive wheels according to the rotation speed of the pedal detected by the rotation speed detector In an electric vehicle equipped with a rotary pedal drive control means for driving and controlling an electric motor for a vehicle,
An electric vehicle comprising: a start switch operated by a driver from OFF to ON; and a start switch drive control means for driving and controlling a driving electric motor according to a predetermined program when the start switch is ON. .   When the start switch is ON and the rotation speed detector detects rotation of the pedal at a predetermined speed or higher, the drive control of the drive electric motor is performed not by the start switch drive control means but by the rotary pedal drive control means. The electric vehicle according to claim 1, further comprising a rotary pedal drive control priority unit.   When the electric vehicle detects that the driver is seated in the driver's seat, and the seat detector does not detect the seating, the drive control of the drive electric motor by the rotary pedal drive control means is limited. And a seating control means that does not restrict the drive control of the driving electric motor by the start switch drive control means regardless of whether or not the seating detection is detected by the seating detector. The electric vehicle according to claim 2.

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