JPH07112693A - Motor scooter type electric two-wheeled vehicle - Google Patents

Abstract

PURPOSE:To improve the performance and life of a motor serving as a traveling drive part and a controller of an electric two-wheeled vehicle by sufficiently cooling them with the traveling wind. CONSTITUTION:An electric two-wheeled vehicle 1 is provided with a motor 32 serving as a traveling drive part and a controller 86 controlling the motor 32, and flat footrest bases 30 are provided between the front and rear wheels 14, 21 into the motor scooter type. The motor 32 is arranged near the rear of the footrest bases 30. The controller 86 is arranged near the area above the motor 32.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a scooter type electric two-wheeled vehicle in which an electric motor which is a drive component and a controller which controls the electric motor are cooled by running wind.

[0002]

2. Description of the Related Art An electric two-wheeled vehicle is usually provided with an electric motor, which is a drive component for traveling, and a controller for controlling the electric motor. A drive current is input to the electric motor from a battery via the controller, The electric motor is driven, and the rear wheels are driven accordingly, so that the vehicle runs.

[0003]

By the way, the above electric motor and controller generate high heat by their operation. Therefore, if this cooling becomes insufficient, the temperature of these electric motors and controllers becomes high, which causes a problem of deterioration in performance and life.

[0004]

SUMMARY OF THE INVENTION The present invention has been made by paying attention to the above-mentioned circumstances, and it is possible to sufficiently cool an electric motor and a controller, which are drive components for traveling of an electric two-wheeled vehicle, by a traveling wind to improve their performance and performance. Its main purpose is to improve life.

[0005]

A scooter type electric two-wheeled vehicle of the present invention for achieving the above object comprises an electric motor 32 which is a drive component for traveling, and a controller 86 which controls the electric motor 32. In the case where a flat footrest 30 is provided between the rear wheels 14 and 21, the electric motor 32 is arranged near the rear of the footrest 30 and the controller 86 is arranged near the upper portion of the electric motor 32. Is.

[0006]

[Operation] The operation of the above configuration is as follows.

When the electric motorcycle 1 travels, the footrest 3
Since 0 is a large one, this footrest 3
Negative pressure tends to occur near the rear of 0. For this reason, when the traveling wind 140 flowing rearward under the footrest 30 reaches the rear end of the footrest 30, the traveling wind 140 wraps around the rear of the footrest 30. Rise to.

In this case, since the electric motor 32 is arranged near the rear of the footrest 30, the electric motor 32 is
As described above, it is effectively cooled by the traveling wind 140 rising so as to wrap around the rear of the footrest 30.

In addition, since the controller 86 is arranged near the upper part of the electric motor 32, the controller 8
6 is also effectively cooled by the traveling wind 140 rising as described above.

[0010]

Embodiments of the present invention will be described below with reference to the drawings.

(Example 1)

1 to 8 show a first embodiment.

1 to 4, reference numeral 1 in the drawings denotes a scooter type electric two-wheeled vehicle, and an arrow Fr indicates the front thereof. The right and left described below means the direction toward the front. Further, G is a road surface.

The body frame 2 of the electric motorcycle 1 has a head pipe 3 at its front portion. A single down tube 4 extends rearward from the upper and lower middle portions of the head pipe 3. The down tube 4 includes a front tube 5 extending rearward and downward from the head pipe 3,
The front tube 5 includes an intermediate tube 6 extending rearward from the rear lower end thereof in a substantially horizontal direction, and a rear tube 7 extending rearward and upward from the rear end of the intermediate tube 6.

A pair of left and right rear frames 9, 9 extends rearward and upward from the upper rear end of the rear tube 7. A seat frame 10 is installed between the upper ends of the rear frames 9 and 9, and the seat frame 10 is formed in a frame shape in a plan view. The above-mentioned components of the vehicle body frame 2 are firmly welded to each other.

A front fork 12 is rotatably supported on the head pipe 3. A front wheel 14 is supported by a front axle 13 at the lower end of the front fork 12. On the other hand, the upper end of the front fork 12 has a T
A letter-shaped handle 15 is attached, and this handle 15
The left and right ends of the grip 16 are grips 16.

A power unit 19, which is a driving component for traveling, is pivotally supported on the rear frame 9 via a pivot shaft 18 so as to be vertically swingable. A rear wheel 21 is supported by a rear portion of the power unit 19 on the swinging end side via a rear axle 20. In addition, the upper end of the rear frame 9 and the power unit 1
The shock absorber 23 is installed between the rear part of the
3, and the front fork 12 absorbs the impact from the road surface G.

A seat 26 is pivotally supported on the seat frame 10 by a pivot shaft 25 so as to be vertically rotatable. The rider 27 can be seated on the seat 26 by rotating the seat 26 downward (indicated by a chain double-dashed line in FIGS. 1 and 2). If the seat 26 is rotated upward (see FIG.
The inside of the seat frame 10 is designed to open upward.

A flat footrest 30 on which a rider 27 seated on the seat 26 rests his / her feet 28 is provided. The footrest 30 is located between the front wheel 14 and the rear wheel 21. When the rider 27 is seated on the seat 26 as described above and the foot 28 is placed on the foot rest 30, the grips 16 can be gripped in this posture.

In FIG. 1, FIG. 2, FIG. 4 and FIG.
The power unit 19 includes a three-phase AC electric motor 32 and a power transmission device 33 that transmits the power of the electric motor 32 to the rear wheels 21.

The electric motor 32 has a cylindrical electric motor case 35 having a shaft center 34 extending to the left and right, and an output shaft 37 supported by a pair of left and right bearings 36, 36 on the electric motor case 35.
And a stator 39, which is a coil attached to the motor case 35, and a rotor 40, which is a magnet attached to the output shaft 37. The rotor 40 is rotated by the alternating drive current applied to the stator 39, and the output shaft 37 is rotated accordingly.

On the outer peripheral surface of the electric motor case 35, a large number of annular fins 41 centering on the shaft center 34 are formed at equal intervals in the left-right direction.

The power transmission device 33 has a transmission case 43 made of aluminum which is long in the front-rear direction. This transmission case 43
Is composed of a case body 44 forming the right half thereof and a case cover 45 forming the left half thereof. The case cover 45 is detachably screwed to the case main body 44 by bolts 46 and a large number of bolts (not shown) provided along the periphery of the case cover 45.

The front portion of the case body 44 is integrally formed with the left end of the electric motor case 35, and the left end of the output shaft 37 is located inside the front portion of the transmission case 43.

The rear axle 2 is provided at the rear of the transmission case 43.
0 is supported. In addition, the output shaft 37 and the rear axle 2
0, the same as above, in the transmission case 43, the first intermediate shaft 4
8 and a second intermediate shaft 49 are supported.

The first intermediate shaft 4 is provided at the left end of the output shaft 37.
8 are connected by a chain winding mechanism 50 having high power transmission efficiency. The first intermediate shaft 48, the second intermediate shaft 49, and the rear axle 20 are connected to each other by a reduction gear set 51. The transmission case 43 is filled with lubricating oil 52, and the lubricating oil 52 lubricates the chain winding mechanism 50, the gear set 51, and the like.

The power of the electric motor 32 is transmitted to the rear wheels 21 via the chain winding mechanism 50, the gear set 51, and the rear axle 20, so that the electric two-wheeled vehicle 1 can travel.

In FIG. 1 and FIG. 2, a front wheel braking device 53 for braking the front wheels 14 is provided. The front wheel braking device 53 has a right lever 54 pivotally supported by the handle 15 so as to be rotatable forward and backward so as to correspond to the right grip 16. The right lever 54 is elastically urged forward and is always held at a predetermined forward rotation position.

On the other hand, a drum brake 55 is provided for the front wheel 14, and the drum brake 55 is connected to the right lever 54 by a wire 56.

When the right lever 54 is gripped with the hand holding the right grip 16 and rotated to the grip 16 side, the drum brake 55 is braked via the wire 56. The front wheels 14 are braked.

1, 2, and 5, there is provided a rear wheel braking device 58 which enables the rear wheel 21 to be braked. The rear wheel braking device 58 is provided on the left grip 16
The handle 15 has a left lever 59 which is pivotally supported so as to be rotatable back and forth. The left lever 59 is elastically urged forward and is always held at a predetermined front rotation position.

On the other hand, a drum brake 60 is provided for the rear wheel 21, and the drum brake 60 is connected to the left lever 59 by a wire 61.

When the left lever 59 is grasped with the hand holding the left grip 16 and rotated to the grip 16 side, the drum brake 60 is braked via the wire 61. The rear wheels 21 are braked.

1 to 6, there is provided a front cowl 63 which covers the head pipe 3 from the front. In addition, while covering the head pipe 3 from the rear,
A leg shield 64 is provided to cover the foot 28 on the footrest 30 away from the front, and the front cowl 63 and the leg shield 64 have a closed cross section in plan view.

The front cowl 63 and the leg shield 64 are both made of resin and are connected to each other and are detachably attached to the vehicle body frame 2.

A front fender 65 made of resin is provided to cover the front wheel 14 from above, and the front fender 65 is adapted to rotate left and right together with the front fork 12.

Intermediate tube 6 of the down tube 4
And a resin undercover 67 that covers the footrest 30 from below. The under cover 67 is detachably attached to the down tube 4.

A rear side cover 68 for covering the left and right rear frames 9, 9 from the left and right outer sides is provided, and a rear cover 69 for opening and closing a front opening between the left and right rear side covers 68, 68 is provided. Each of the rear side covers 68 and the rear cover 69 is made of resin, and these are connected to each other and are detachably attached to the rear frame 9, respectively.

A resin-made rear fender 70 for covering the rear wheel 21 from above is provided, and the rear fender 70 is detachably attached to the upper end of the rear frame 9. A front wall 71 of the rear fender 70 is a flat surface, and a rubber flap 72 is provided on the back surface of the front wall 71.
The lower part of the flap 72 extends downward and covers the rear wheel 21 from the upper front.

In FIGS. 1 and 4, a main stand 74 is pivotally supported by a pivot shaft 73 on the front portion of the motor case 35 of the motor 32 so as to be vertically rotatable. As shown by the solid line in each figure, by rotating the main stand 74 upward, the electric two-wheeled vehicle 1 is allowed to run in the stored posture.

As shown by the alternate long and short dash line in FIG. 4, when the main stand 74 is rotated downward, the lower end of the main stand 74 in the upright posture and the front wheel 14 come into contact with the road surface G. As a result, the electric motorcycle 1 can stand on this road surface G. Further, at this time, the rear wheel 21, which is a driving wheel, separates upward from the road surface G.

1 to 8, an upper support bar 75 is detachably provided on the intermediate tube 6, and the footrest 30 is supported by the upper support bar 75. A pair of front and rear lower support bars 76, 76, which are long in the left-right direction, are provided on the intermediate tube 6 in the same manner. A pair of left and right support boxes 77, 77 are detachably attached to the lower support bars 76, 76 with bolts 78. The left and right support boxes 77, 77 are made of resin and are located on the left and right of the intermediate tube 6. Also, the left and right support boxes 7
7, 77 are integrally connected to each other by a connecting piece 79 located near the upper portion of the intermediate tube 6.
The connecting piece 79 has a semicircular trough shape and extends in the front-rear direction. In the connecting piece 79, electric parts such as the fuse 80 are stored, and electric wiring is also stored.

A pair of front and rear batteries 81, 81 are housed in the support boxes 77, respectively.
Is releasably pressed from above by the upper support bar 75. The upper and lower support bars 75, 76,
The support box 77 and the battery 81 are entirely covered with the footrest 30 and the undercover 67 from above and below.

A charger 82 and a charging port 83 electrically connected to each of the batteries 81 are provided in the seat frame 10. When the battery 81 is to be charged, first, the seat 26 is rotated upward as indicated by the alternate long and short dash line in FIG. 1 to open the inside of the seat frame 10 upward. Next, the charger 82 is connected to a household power source (AC 100V), or the charging port 8 is connected.
3 is connected to the charging connector 84 and is connected to a power source (direct current) dedicated to charging, whereby the above charging is performed. Reference numeral 85 is a charging indicator.

A controller 86, which is a driving component for traveling, is provided between the left and right rear frames 9 and 9, and the controller 86 controls the electric motor 32. The controller 86 has a controller case 87 made of aluminum that opens forward, and left and right outward flanges 88, 88 are integrally formed at the front end of the controller case 87.
These outward flanges 88 are in contact with the respective rear frames 9 and are detachably screwed by bolts 89.

A bottom wall 90 in the controller case 87
An inverter 91, which is a power unit, is attached to the inner surface of the. A control unit 92, which is a control unit, is housed in the controller case 87.
A cover plate 93 is provided that closes the front end opening of the controller case 87 so as to be openable and closable.

When the rear cover 69 is removed and the cover plate 93 is removed to open the opening of the controller case 87, the inverter 91 and the control unit 92 can be taken out from the controller case 87 or replaced with a new one. Can be done easily.

A large number of vertically extending fins 94 are formed on the rear surface of the bottom wall 90, and these fins 94 are arranged at substantially equal intervals in the left-right direction. Plan view (Fig. 6)
An imaginary line connecting the projecting ends of the fins 94 has an arc shape projecting rearward.

Since the controller case 87 is thick as a whole, the controller case 87 serves as a reinforcing member for firmly connecting the left and right rear frames 9, 9 to each other. Further, the controller case 87 is located between the left and right rear frames 9 and is protected by these rear frames 9 as described above.

In particular, referring to FIG.
Is a power relay 9 which is a relay for the battery 81.
The power relay 96 is connected between the left and right batteries 81, 81. Same as above inverter 9
1 is connected to the electric motor 32.

Reference numeral 97 is an emergency stop switch, 98 is a normally open (off) start switch, and these are the controller 8
Connected to 6.

The right grip 16 is rotatable about its axis. A potentiometer-type accelerator sensor 99 that interlocks with the rotation of the grip 16 is provided, and the accelerator sensor 99 is the front cowl 63.
It is housed inside.

The grip 16 is elastically urged to rotate to a predetermined position in the direction opposite to the arrow A in FIG. Further, there is provided a fully closed switch 100 for turning off the connection between the electric motor 32 and the inverter 91 when the grip 16 is thus rotated to the predetermined position.

From this state, if the grip 16 is rotated in the direction of arrow A in FIG. 8 against the elastic force, the full-close switch 100 is turned on first. Further, the output voltage from the accelerator sensor 99 to the control unit 92 increases as the amount of rotation of the grip 16 increases. And the control unit 9 by this
With the output of 2, a larger alternating drive current is output from the inverter 91 to the electric motor 32. That is, if the grip 16 is rotated in the direction of arrow A in FIG.
The electric motor 32 is accelerated by the amount of the rotation, and the vehicle is accelerated.

4 and 8, a battery sensor 102 for detecting the remaining capacity of the battery 81 by current and voltage is provided. The output signal of the battery sensor 102 is input to the battery remaining capacity meter 103 via the control unit 92, and the battery remaining capacity meter 103 displays the remaining capacity of the battery 81.

Reference numeral 104 is a start indicator, 105 is an overheat indicator, and 106 is a power fault indicator.

In particular, in FIG. 8, a key-operated main switch 109 and a converter 110 are connected in series to the control unit 92. The power relay 96 is connected to the main switch 109 in parallel with the converter 110. When the main switch 109 is turned on, the power relay 9
6 is turned on, and a voltage (48V) is applied from the battery 81 to the inverter 91. At the same time, the controller 86 and the converter 110 are energized from the battery 81, and a voltage (48 V) is applied. Further, the following various electric parts connected in parallel to this converter 110 are energized through this converter 110, and a control voltage (12 V) is applied.

The electric components are connected to the converter 110 as follows.

A headlamp 113 is connected via a dimmer switch 112. Flasher relay 115,
The front and rear flasher lamps 119 on the left side and the front and rear flasher lamps 120 on the right side are connected via the audio pilot 116 and the left and right selection switch 117. 1
21 is a speedometer lamp. The horn switch 123 and the horn 124 are connected in series.

2, 3, and 8, a tail lamp 126 and a stop lamp 127 are attached to the rear portion of the seat frame 10, and the stop lamp 1
27 is connected in series with the left and right stop switches 128, 128. Then, when the right lever 54 and / or the left lever 59 are gripped and rotated rearward to some extent, the stop switch 128 is turned on and the stop lamp 127 is turned on.

Further, the right lever 54 and the left lever 59
A potentiometer-type front brake sensor 130 and a rear brake sensor 131 are provided which are interlocked with each of these rotations when rotating.

Then, the right lever 54 and the left lever 59
When the grips are squeezed and rotated backward toward the grip 16, respectively, the front brake sensor 130 and the rear brake sensor 13 are increased as the amount of rotation increases, that is, as the braking force by the drum brakes 55 and 60 increases.
It is supposed that the output voltage of 1 becomes large.

In FIG. 8, the coil 13 of the relay 133 is
4 and the main stand switch 135 are connected in series. Further, the contact 136 of the relay 133 and the buzzer 137 are connected in series.

In particular, as shown by the solid line in FIGS. 1 and 4, when the main stand 74 is rotated upward to the storage posture, the main stand switch 135 is turned off,
The buzzer 13 regardless of whether the main switch 109 is turned on.
7 does not sound.

On the other hand, as shown by the chain double-dashed line in FIG. 4, when the electric stand 1 is rotated and the main stand 74 is rotated downward to the standing posture in order to make it stand by itself, the main stand 74 is moved to the standing position. When pressed, the main stand switch 135 is turned on and the coil 134 is excited, whereby the contact 136 is turned on and the buzzer 137 sounds.

That is, in order to stop the electric two-wheeled vehicle 1, the main stand 74 is set to the standing posture, and the electric two-wheeled vehicle 1 is
If the main switch 109 remains on when the device is self-sustaining, a warning is given by the buzzer 137 to inform that the main switch 109 should be turned off. Then, when the main switch 109 is turned off, useless discharge of the battery 81 is prevented.

In FIG. 8, when the electric two-wheeled vehicle 1 is run, first, the main stand 74 is pivoted upward to the stored posture, the front wheels 14 and the rear wheels 21 are grounded on the road surface G, and the rider 27 Sit on the seat 26. Next, the main switch 109 is turned on, and the start switch 98
Turn on. Then, the electric motor 32 is ready to be driven. In this case, the main switch 109 is kept on until it is turned off.
If the operation for 8 is canceled, it automatically returns to OFF.

When the right grip 16 is gradually rotated in the direction of arrow A, first, the fully closed switch 100 is automatically turned on. Further, when the grip 16 is rotated, the voltage input from the accelerator sensor 99 to the controller 86 increases accordingly, and accordingly, the drive current applied from the battery 81 to the electric motor 32 via the controller 86 increases. The electric motorcycle 1 is accelerated. After that, traveling at a desired speed can be obtained by rotating the grip 16 and operating the right lever 54 or the left lever 59 for braking.

When the electric motorcycle 1 is stopped, the main switch 109 may be turned off and the main stand 74 may be rotated downward to make the electric motorcycle 1 stand alone.

During normal traveling of the electric motorcycle 1, the emergency stop switch 97 remains closed, that is,
Although it is still turned on, the emergency stop switch 97 is turned off when the electric motorcycle 1 is to be stopped in an emergency. Then, the inverter 91, which is the power unit, is immediately turned off and the electric motor 32 is stopped. However, the control unit 92, which is the control unit, is kept on, and the memory until that time is left as it is. When the emergency stop switch 97 is turned on again from this state, the control unit 92 returns to the state immediately before the emergency stop switch 97 was turned off, and the electric motorcycle 1 can run again.

1 to 7, the electric motor 32, which is a driving component for running the electric motorcycle 1, and the inverter 91 of the controller 86, in particular, generate high heat by their operations.

Therefore, the electric motor 32 and the controller 86 are cooled by the traveling wind 140 as follows.

That is, the electric motor 32 is arranged near the rear of the vertically placed footrests 30 and the battery 81 group, and the controller 86 is arranged near the upper portion of the electric motor 32.

At the front lower portion of the under cover 67, in the middle portion on the left and right sides, an introduction groove 141 is formed so as to pass backward between the left and right batteries 81, 81. Further, in the rear lower part of the same undercover 67, in the left-right intermediate part, there is a rearwardly extending guide groove 142 so as to pass between the left and right batteries 81, 81.
Are formed.

Further, the left and right rear side covers 68, 6
An air passage 143 is formed between the rear edges of the rear fender 70 and the front wall 71 and the flap 72 of the rear fender 70 so as to face rearward and upward in a side view. The ventilation passage 143 has a shape that widens toward the lead-out groove 142 in the same side view. The motor case 35 of the motor 32 is located between the lead-out groove 142 and the lower end side of the ventilation passage 143. Further, the fins 94 of the bottom wall 90 of the controller 86 face the ventilation passage 143.

Then, when the electric motorcycle 1 travels, the footrest 30 and the battery 8 which are stacked on the front surfaces of the front cowl 63 and the front fender 65 and on the upper and lower sides.
The traveling wind 140 that has collided with the front surface of the first group flows backward under the under cover 67 that is under the footrest 30. Further, as the traveling wind 140 is guided to the introduction groove 141, a larger amount of traveling wind 140 flows rearward under the under cover 67.

At this time, the footrest 30 and the battery 81
Since the group has a large shape in a front view, a negative pressure is generated in the vicinity of the rear of the group, and thus the under cover 67 is
The traveling wind 140 flowing rearward under the lower part rises so as to wrap around the rear of the footrest 30 and the battery 81 group. Further, at this time, the traveling wind 140 is discharged by the guide groove 142.
Guided to, it will rise more smoothly.

Then, the running wind 140 rising in this way
Passes through between the fins 41 in the electric motor case 35 of the electric motor 32 on the way to the ventilation passage 143, whereby the electric motor 32 is effectively cooled. Further, since the transmission case 43 is used as a heat sink for the electric motor 32, and the lubricating oil 52 in the transmission case 43 is used as a refrigerant, the electric motor 32 is effectively cooled in this respect as well. To be done.

Further, the traveling wind 140 after cooling the electric motor 32 flows through the ventilation passage 143, and the traveling wind 140 passes between the fins 94 of the controller 86. In this case, since the inverters 91 that easily become hot are attached to the bottom wall 90 having the fins 94 formed therein, the inverters 91 are effectively cooled.

Further, the rear frame 9 is made of iron, the controller case 87 is made of thick aluminum as a whole, and these are closely attached by bolts 89.
Therefore, the rear frame 9 is connected to the controller 86.
Used as a heat sink for. Therefore, also in this respect, the controller 86 is effectively cooled.

In the above case, the electric motor 32 and the controller 8
Since 6 and 6 are located in the vicinity of each other, there is also an advantage that mutual wiring can be simplified and transmission loss can be reduced.

(Example 2)

9 and 10 show the second embodiment.

According to this, the left and right rear side covers 6 are provided.
8 also covers the upper part of the shock absorber 23 from the outside. The rear ends of the rear side covers 68 are located above and above the rear fender 70, and the rear ends are connected to each other by a rear end cover 66.
Two discharge holes 66a are formed.

A pair of left and right guide plates 70a, 70a are integrally provided on the front wall 71 of the rear fender 70 so as to project therefrom. The left and right guide plates 70a, 70a surround the controller case 87 from the left and right, and the ventilation passage 143 has a substantially closed cross section in a plan view. For this reason, the traveling wind 140 that has flowed into the ventilation passage 143 will be
It is guided rearward and upward without flowing outward from 43. Therefore, this traveling wind 140 causes the controller 8
6 is cooled more effectively. After this, the running wind 14
0 is discharged to the rear of the vehicle body through the discharge hole 66a.

It should be noted that the discharge hole 66a shown in FIG. 10 is not actually located at this position, but is shown for the purpose of comparing the left and right positions of the controller 86 and the rear fender 70 and comparing the sizes.

In FIG. 9, an extra space 146 having a U-shape in a side view is formed between the front projection of the seat 26 and the footrest 30. And this space 146
Is used to store the helmet 147. Further, when the helmet 147 is housed in the space 146, a key operation type locking mechanism 148 is provided that locks the helmet 147 with respect to the rear tube 7 in a detachable manner.

Since other structures and operations are the same as those of the above-mentioned embodiment, common reference numerals are given to the drawings and the description thereof will be omitted.

[0089]

According to the present invention, a scooter type electric motorcycle having an electric motor which is a drive component for traveling and a controller for controlling the electric motor, and having a flat footrest between front and rear wheels. In the above, the electric motor is arranged near the rear of the footrest, and the controller is arranged near the upper part of the electric motor.

Therefore, when the electric two-wheeled vehicle travels and negative pressure is generated in the vicinity of the rear of the footrest, the traveling wind flowing rearward below the footrest causes the rear of the footrest to be behind. Ascends to wrap around.

In this case, since the electric motor is arranged in the vicinity of the rear of the footrest as described above, this electric motor is driven by the traveling wind that has risen around the rear of the footrest as described above. Effectively cooled.

Moreover, since the controller is arranged in the vicinity of the upper part of the electric motor, the controller is also effectively cooled by the traveling wind rising as described above.

Therefore, the electric motor and the controller, which are the drive components for traveling of the electric motorcycle, are sufficiently cooled by the traveling wind, and their performance and life are improved.

Further, since the electric motor and the controller are positioned above and below as described above, the wheel base can be shortened as compared with the case where these are arranged front and back.

Therefore, there is also an effect that the turning performance of the electric motorcycle is improved.

[Brief description of drawings]

FIG. 1 is an overall side view of the first embodiment.

FIG. 2 is an overall plan view of the first embodiment.

FIG. 3 is a front cross-sectional view of a portion in which a footrest and a battery are vertically stacked in the first embodiment.

FIG. 4 is a partially enlarged view of FIG. 1 in the first embodiment.

FIG. 5 is a plan sectional view of the power unit according to the first embodiment.

FIG. 6 is a plan sectional view of the controller according to the first embodiment.

FIG. 7 is a partial front sectional view of the controller according to the first embodiment.

FIG. 8 is an electrical wiring diagram in the first embodiment.

FIG. 9 is a diagram corresponding to a part of FIG. 1 in the second embodiment.

FIG. 10 is a diagram corresponding to FIG. 6 in the second embodiment.

[Explanation of symbols]

 1 Electric Motorcycle 2 Body Frame 14 Front Wheel 19 Power Unit 21 Rear Wheel 30 Footrest 32 Electric Motor 33 Power Transmission Device 81 Battery 86 Controller 140 Running Wind

Claims (1)

[Claims] 1. A scooter type electric two-wheeled vehicle comprising an electric motor which is a drive component for traveling and a controller which controls the electric motor, and a flat footrest between front and rear wheels. A scooter type electric motorcycle in which the electric motor is arranged near the rear of the electric motor and the controller is arranged near the upper part of the electric motor.