JP2002326596A - Two-wheeled vehicle with electric motor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To install a plurality of electric motors on a power unit by effectively utilizing a dead space inside a body and increase a riding comfortableness and a steering stability. SOLUTION: This two-wheeled vehicle with electric motors suspending a power unit comprises a handle 3 provided at the front of a body frame 1 and a power transmission mechanism for transmitting a drive force from the electric motors 13 to a rear wheel 10 provided under a seat 4 and at the rear of a front wheel 2. The plurality of electric motors are installed on the outer periphery of the power unit 53 to separate the motor shafts of the electric motors 13 from the drive shaft of the power transmission mechanism and to transmit the drive forces of the motor shafts to the drive shafts through a plurality of gears. The engagement positions of the plurality of gears are located generally at the centerline of the body in plan view of the body.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a motorcycle with an electric motor employing an electric motor as a drive source of a power unit.

[0002]

2. Description of the Related Art Conventionally, a scooter type motorcycle employs an internal combustion engine that uses gasoline as fuel, burns the gasoline, and converts the gas into power, and runs the vehicle with the power.

[0003] However, in an internal combustion engine using gasoline as a fuel, it is indispensable to take measures against vibration and noise, as well as to take measures against cooling of the internal combustion engine and heat of exhaust gas. In addition, since exhaust gas is emitted, there is a problem of air pollution, and countermeasures are also difficult. Further, there are various problems such as the necessity of various types of devices such as a carburetor, an air cleaner, and a muffler as auxiliary devices.

[0004] Therefore, if an electric motor is used as a pollution-free power source and the rear wheels are driven by this motor to run, there is no problem of pollution and there are few ancillary devices. Since the two-wheeled vehicle is a power unit type that supports the rear wheel so that it can swing freely, an electric type has not yet been provided.

[0005]

By the way, when an electric motor is mounted as a drive source (power source) on a power unit of a scooter type motorcycle, if it is desired to use a plurality of electric motors simultaneously to increase output, A plurality of electric motors are installed near the drive shaft of the power transmission mechanism housed in the power unit. However, it is difficult to install a plurality of electric motors in a scooter-type motorcycle that does not have sufficient space.

Further, since the electric motor is heavy, if the plurality of electric motors are installed in the power unit, the unsprung weight of the rear wheels becomes heavy, and there is a concern that the riding comfort and the steering stability may be adversely affected.

The present invention has been made in view of the above-mentioned circumstances, and enables a plurality of electric motors to be installed in a power unit by effectively utilizing a dead space inside a vehicle body, and provides riding comfort and steering stability. It is an object of the present invention to provide a two-wheeled vehicle with an electric motor capable of improving the performance.

[0008]

In order to achieve the above object, a motorcycle with an electric motor according to the present invention is provided with a handle at a front portion of a vehicle body frame.
A motorcycle with an electric motor that suspends a power unit having a power transmission mechanism that transmits a driving force of an electric motor to a rear wheel below a seat and behind a front wheel, wherein a plurality of the electric motors are installed on an outer periphery of the power unit. The motor shaft of the electric motor and the drive shaft of the power transmission mechanism are separate shafts, and the driving force of the motor shaft is transmitted to the drive shaft by a plurality of gears. The engagement position is substantially on the vehicle center line.

According to a second aspect of the present invention, there is provided a two-wheeled vehicle with an electric motor having a handle at a front portion of a vehicle body frame, and a driving force of an electric motor provided below a seat and behind a front wheel. A motorcycle with an electric motor that suspends a power unit having a power transmission mechanism that transmits power to the motorcycle,
A plurality of the electric motors are installed in the power unit, and a suspension position of the power unit on the vehicle body frame is set between the plurality of electric motors when the vehicle is viewed from the side.

Further, the motorcycle with an electric motor according to the present invention is provided with a handle at a front portion of a vehicle body frame, and applies a driving force of the electric motor to a rear wheel below a seat and behind a front wheel. A motorcycle with an electric motor that suspends a power unit having a power transmission mechanism that transmits power to the motorcycle,
A plurality of the electric motors are installed at least at any one of a front end position, a front upper position, and a front lower position of the power unit.

According to a fourth aspect of the present invention, there is provided a motorcycle with an electric motor according to the fourth aspect, wherein the plurality of electric motors are connected to the power unit so as to form a V shape in a side view of the vehicle body. It is characterized by being arranged.

According to a fifth aspect of the present invention, there is provided a two-wheeled vehicle with an electric motor, further comprising a handle at a front portion of a vehicle body frame, and a driving force of the electric motor provided below a seat and behind a front wheel. A motorcycle with an electric motor that suspends a power unit having a power transmission mechanism that transmits power to the motorcycle,
A plurality of the electric motors are installed in the power unit, and a suspension position of the power unit on the vehicle body frame is set between the electric motor and a center stand.

Further, the motorcycle with an electric motor according to the present invention is provided with a handle at a front portion of a body frame, and applies a driving force of the electric motor to a rear wheel below the seat and behind the front wheel. A motorcycle with an electric motor that suspends a power unit having a power transmission mechanism that transmits power to the motorcycle,
An article storage room for storing luggage such as a helmet by opening and closing the seat was provided, a plurality of the electric motors were installed in the power unit, and batteries were arranged at least in one of front, rear, and lower parts of the article storage chamber. It is characterized by the following.

[0014]

According to the first aspect of the present invention, the dead space is effectively used to reduce the size of the power unit and improve the riding comfort, and to improve the steering stability by adjusting the right and left weight balance of the power unit. be able to.

According to the second aspect of the present invention, the space around the power unit can be reduced by effectively utilizing the dead space.

Further, according to the third aspect of the present invention, since the electric motor, which is a heavy object, is installed at the front portion of the power unit and approaches the connecting portion of the power unit to the vehicle body frame, the unsprung weight is substantially reduced, and It can contribute to improving ride comfort.

According to the inventions described in claims 4 to 6, the space around the power unit can be made more compact by effectively utilizing the dead space.

[0018]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments and reference examples of the present invention will be described below with reference to the drawings.

FIG. 2 is a right side view showing a reference example of a motorcycle with an electric motor according to the present invention. FIG.
It is sectional drawing which follows a line.

As shown in FIG. 2, the motorcycle with an electric motor is of a scooter type. A steering shaft (not shown) of a front wheel 2 is supported at a front portion of a body frame 1, and a handle 3 is mounted at an upper end thereof. A seat 4 is provided above a rear portion of the body frame 1, and a seat 4 is provided therebelow.
An article storage room 6 for storing luggage such as a helmet 5 is provided by opening and closing the door.

The suspension bracket 7 at the rear of the body frame 1
The power unit 8 is rotatably supported in a vertical direction via a mount bracket 9 integrated with the power unit 8. A rear wheel 10 is pivotally supported at a rear portion of the power unit 8, and an upper portion of the power unit 8 is buffer-suspended on the vehicle body frame 1 using a cushion unit 11. Note that the mount bracket 9 is attached to the power unit 8.
May be integrated at the 9 'position on the front upper part of the vehicle.

As shown in FIG. 1, the power unit 8 integrates a V-belt transmission mechanism 12 as a power transmission mechanism and an electric motor 13 as a drive source. Case 14
And a case cover (clutch cover) 15. The power unit case 14 is configured by joining the unit case L-side element 14A and the unit case R-side element 14B at the position of the power unit center line O of the power unit 8.

As shown in FIGS. 1, 2 and 3, the electric motor 13 is mounted on a unit case R-side element 14B installed on the drive side of the power unit case 14 with mounting bolts 1 attached thereto.
6 and so on. The charging generator 17 is arranged at the front of the unit case R-side element 14B. That is, the relatively large electric motor 13 is installed at the center of the drive side of the power unit case 14, and the generator 17 smaller than the electric motor 13 is installed at the front end of the power unit case 14 on the drive side. The generator 17 is fixed to the unit case R-side element 14 </ b> B by a mounting bolt 18, and is fixed to a generator support boss 19 fixed to the electric motor 13 by using a mounting bolt 20.

The motor shaft 21 of the electric motor 13
Are integrally formed coaxially with the drive shaft 22 of the V-belt transmission mechanism 12, and a generator drive sprocket 24 is formed at a position corresponding to the power unit center line O on the integrated shaft 23. Integrated shaft 2
3 is rotatably supported on the unit case L-side element 14A via bearings 25 and 26 and on the unit case R-side element 14B via a bearing 27, respectively.

The V-belt transmission mechanism 12 includes a drive V pulley 28 mounted on the drive shaft 22 and a driven V pulley 29 facing the drive V pulley 28.
And a V-belt 30 stretched between the V-pulleys 28 and 29. Outside the drive V pulley 28, a fan 32 for cooling the belt chamber 31 is provided.

The driven V-pulley 29 of the V-belt transmission mechanism 12 is rotatably supported by a transmission drive shaft 33 provided behind the unit case L-side element 14A, and is driven via a centrifugal clutch mechanism 34. 33. The transmission drive shaft 33 is rotatably supported by the unit case L-side element 14A and the transmission cover 35 via a bearing 36, and is connected to a rear axle 39 via a reduction gear mechanism 38 disposed in the transmission chamber 37. Is done.

Therefore, the rotational force of the electric motor 13 is
The power is transmitted from the integral shaft 23 of the motor shaft 21 and the drive shaft 22 to the drive V pulley 28 of the V-belt transmission mechanism 12, transmitted to the driven V-pulley 29 via the V-belt 30, and transmitted to the centrifugal clutch mechanism 34, the transmission drive shaft 33 and The power is transmitted to the rear axle 39 via the reduction gear mechanism 38, and the rear wheel 10 is rotationally driven.

On the other hand, the generator shaft 40 of the generator 17 is provided on a separate shaft from the integrated shaft 23,
As shown in FIG. A generator driven sprocket 42 is formed on the generator driven shaft 41, and a generator drive chain 43 is bridged between the generator driven sprocket 42 and the generator drive shaft 24 of the integral shaft 23. Therefore, part of the torque of the electric motor 13 is transmitted to the generator 17 via the generator drive sprocket 24, the generator drive chain 43, and the generator driven sprocket 42, and the generator 17 generates electric power.

Reference numeral 44 in FIGS. 2 and 3 indicates a battery. The battery 44 is provided in a space formed between a lower front portion of the article storage room 6 and the suspension bracket 7, a space behind the article storage room 6 above the rear wheel 10, and a space below the step board 45, respectively. Be placed.

According to the above configuration, since the motor shaft 25 and the drive shaft 22 of the power transmission mechanism 12 are coaxially and integrally formed by the integrated shaft 23, output loss can be reduced.

In this configuration, the motor shaft 21
Are formed coaxially and integrally with the drive shaft 22, and the generator shaft 40 is formed separately from the drive shaft 22, so that the large electric motor 13 is located near the center of the unit case R-side element 14B, and the small generator 17 is It can be installed on the periphery of the case R-side element 14B. As described above, since the large electric motor 13 is arranged near the center of the unit R side element 14B, not at the peripheral edge, the power unit 8 can be made compact.

Further, since the electric motor 13 is installed on the unit case R-side element 14B of the power unit case 14, the length of the integral shaft 23 is extended, and the integral shaft 23 can be supported by a large number of bearings 25, 26 and 27. . As a result, the size of the electric motor 13 can be increased.

Further, the generator 17 is supported by the unit case R-side element 14B using the mounting bolt 18 and also supported by the electric motor 13 using the generator supporting boss 19 and the mounting bolt 20. Can be simplified and the design thereof can be simplified, as compared with the case where is supported only by the unit case R-side element 14B.

FIG. 5 is a schematic horizontal sectional view showing a power unit according to a first modification of the above-mentioned reference example. FIG. 6 is a left side view showing a motorcycle with an electric motor equipped with the power unit of FIG. 5, and FIG. 7 is a plan view of the electric motor of FIG. In the first modification of the first embodiment, the same parts as those in the first embodiment are denoted by the same reference numerals, and description thereof will be omitted.

In the power unit 46 according to the first modification of the first embodiment, the power unit case 47 includes a unit case L-side element 47A and a unit case R-side element 47B, and the V-belt speed change mechanism 12 is connected to the unit case R side. It is fixed to the element 47B using the mounting bolt 16. Also, the generator 17
Are fixed to the unit case L-side element 47A using the mounting bolts 18, and the generator support boss 48 formed on the unit case L-side element 47A.
Is fixed using mounting bolts 20. Generator 1
The generator shaft 40 is rotatably supported by the unit case L-side element 47A.

In the first modified example of the reference example, the generator 17 is arranged at a position opposite to the electric motor 13, so that
The weight balance in the left-right direction of the power unit 46 is improved, and the dead space of the power unit 46 can be effectively used.

Further, since the generator 17 is supported not only on the generator shaft 40 side but also on the position close to the case cover 15 in the power unit case L side element 47A, the generator 17 is supported by a structure of supporting both ends. Thus, the reinforcing structure of the unit case L-side element 47A can be simplified.

In the first modification of this embodiment, the generator 17 is installed at the front edge of the power unit 46 as shown in FIGS. 6 and 7, but as shown in FIG. May be installed in the upper part or lower part of the front part.

Also, as in a motorcycle with an electric motor in a second modified example of the reference example shown in FIGS.
Such as the one provided with the article storage room 6 for storing the helmet 5 of the full-face type or the semi-jet type in an inverted state, and the motorcycle with the electric motor in the third modification of the reference example shown in FIGS. Helmet 5
The generator 17 has the front end position of the front part of the power unit 46 and the upper part of the front part of the power unit 46, similarly to the first modification of the above-described reference example. It is installed at either the position or the front lower part position of the power unit 46, respectively.

In a power unit of a motorcycle with an electric motor according to a fourth modified example of the reference example of the present invention, the first unit of the reference example
The generator support boss 48 in the modified example is provided integrally or integrally with the case cover 15 as shown by the dashed line in FIG. Therefore, in the fourth modification of the first embodiment, since the generator 17 is also supported by the case cover 15, the reinforcing structure of the unit case L-side element 14A can be simplified.

FIGS. 12 and 13 are schematic horizontal sectional views showing power units of a fifth modification and a sixth modification of the motorcycle with an electric motor according to the present invention. In these fifth modified example and sixth modified example, the same parts as those of the above-mentioned reference example are denoted by the same reference numerals, and description thereof will be omitted.

In both of these modifications, the power unit 4
This is the case where the generator 17 is not installed at 9, 50. In the fifth modified example shown in FIG. 12, the power unit case 51 includes a unit case L-side element 51A and a unit case R-side element 51B, and the electric motor 13 is fixed to the unit case R-side element 51B. As described above, since the electric motor 13 is installed on the unit case R-side element 51B located on the opposite side to the unit case L-side element 51A that houses the V-belt transmission mechanism 12, the integrated shaft 23 is provided in the same manner as in the reference example. A large number of bearings 25, 26 and 27 can be installed, and a large electric motor 13 can be employed.

In a power unit 50 according to a sixth modification of the reference example shown in FIG. 13, the power unit case 52 is a single case. The V unit transmission mechanism 12 is housed in the power unit case 52 and the power unit case 52 is electrically driven. The motor 13 is attached. Therefore, the power unit 50 can be made compact, and this power unit 5
0 can be mounted on a small scooter type motorcycle.

FIG. 15 is a left side view showing a first embodiment of the motorcycle with an electric motor according to the present invention, and FIG.
FIG. 5 is a sectional view taken along line XIV-XIV of FIG. In the first embodiment, the same parts as those in the reference example are denoted by the same reference numerals, and the description is omitted.

In the power unit 53 of the motorcycle with an electric motor in the first embodiment, as shown in FIG. 14, a primary driven gear 55 is formed integrally with a drive shaft 54 of the V-belt speed change mechanism 12, and the drive shaft 5
The V-belt transmission mechanism 12 is installed at one end of the motor 4, and the power generating magnet 56 is installed at the other end.

The motor shaft 57 of the electric motor 13
The shaft is separate from the drive shaft 54 of the belt transmission mechanism 12, and is rotatably and integrally fitted to the primary drive gear 58. The driving force of the electric motor 13 is transmitted to the drive shaft 54 via the primary drive gear 58 and the primary driven gear 55. Is transmitted.

The power unit case 59 is formed by joining a unit case L-side element 59A and a unit case R-side element 59B at the gear center line Q of the primary drive gear 58 and the primary driven gear 55. The electric motor 13 is fixed to the element 59B on the unit case R side using the mounting bolt 16, and the primary drive gear 58 is rotatably supported on the element 59A on the unit case L side using a bearing 60. The drive shaft 54 includes a bearing 61,
The unit case L side element 59A and the unit case R side element 59B are rotatably supported using 62 and 63.

The power generation magnet 56 is fixed to the unit case R-side element 59B, and is fixed to the other end of the drive shaft 54.
4 that rotates around the outer periphery of the rotor 4.
A cooling fan 66 is fixed outside the rotor 65. The power generation magnet 56 and the electric motor 13 are surrounded by a motor / magnet cover 67, and the rotation of the cooling fan 66 causes the motor / magnet cover 67.
Inside, cooling air is guided to the electric motor 13 side.

The element 59A on the unit case L side has a motor support boss 6 at a position facing the electric motor 13.
8 are integrally formed. The motor support boss 68 extends in a direction opposite to the electric motor 13, and is fixed to a clutch cover boss 70 extending from the clutch cover 69 to the front of the power unit 53 by using a mounting bolt 71. As described above, the electric motor 13 is supported by the unit case R-side element 59B using the mounting bolts 16 and supported by the clutch cover 69 by the motor support boss 68 and the clutch cover boss 70.

The gear center line Q is disposed at a position eccentric to the V-belt transmission mechanism 12 from the power unit center line O by an offset amount e. Further, in this embodiment, the generator 17 as in the above-described reference example is not installed, and as shown in FIGS.
Are installed at the front end position, the upper front position, or the lower front position of the power unit 53, respectively. Alternatively, a plurality of electric motors 13 may be installed at each of the above positions at the same time.

According to the first embodiment, the heavy electric motor 13 is directly supported by the unit case L-side element 59B, and is indirectly connected to the clutch cover 69 via the motor support boss 68 and the clutch cover boss 70. As a result, the electric motor 13 is supported by the unit case R-side element 59B alone,
The reinforcing structure of the unit case R-side element 59B can be simplified. In addition, a separate reinforcing bracket is not required. In addition, the power unit 53 can be made more compact by effectively utilizing the dead space.

In addition, since the heavy electric motor 13 is installed at the front portion of the power unit 53 and approaches the connecting portion of the power unit 53 to the vehicle body frame 1, the unsprung weight is substantially reduced and the riding comfort is improved. Can contribute to

Further, when three electric motors 13 are arranged, the electric motors 13 are arranged so as to form a V-shape when viewed from the side of the vehicle body, so that the dead space can be effectively used also in this respect.

The gear center line Q of the primary drive gear 58 and the primary driven gear 55 is shifted from the unit center line O of the power unit 53 to the V-belt transmission mechanism 1.
Since the power unit 53 is eccentrically mounted on the second side by the offset amount e, the large-sized electric motor 13 can be installed without expanding the left and right widths of the power unit 53. Further, the length of the motor support boss 68 can be reduced.

In the first embodiment, the description has been given of the case of the motorcycle with the electric motor in which the helmet 5 is stored in the article storage room 6 in an upright state. However, the first embodiment shown in FIGS. As in the first modification, the helmet 5 is moved to the article storage room 6.
It may be of the type installed in an inverted state inside,
Further, as in a second modification of the first embodiment shown in FIGS. 19 and 20, the helmet 5 may be of a type in which the helmet 5 is placed sideways in the article storage room 6.

FIG. 21 is a schematic horizontal sectional view showing a power unit of a motorcycle with an electric motor according to a third modification of the first embodiment of the present invention. In the third modified example, the same parts as those in the second modified example are denoted by the same reference numerals, and description thereof will be omitted.

In the power unit 72 of the third modified example of the first embodiment, only the magnet cover 73 is provided on the unit case R-side element 59B, and the motor support boss 74 is provided on the magnet cover 73 and is adjacent to the electric motor 13. And are integrally molded. The electric motor 13 is fixed to the unit case R-side element 59 </ b> B using the mounting bolt 16, and the motor supporting boss 74 is mounted to the mounting bolt 7.
5 is fixed.

Therefore, the electric motor 13 is mounted on the unit case R side element 59B and the magnet cover 73.
, The reinforcement structure of the unit case R-side element 59B can be simplified as in the second modification. The other effects are the same as those of the second modification.

FIG. 22 is a schematic horizontal sectional view showing a power unit of a motorcycle with an electric motor according to a fourth modification of the first embodiment. In the fourth modified example, the same parts as those in the above-described embodiment are denoted by the same reference numerals, and description thereof will be omitted.

The power unit 7 in the fourth modified example
In 6, the electric motor 13 is installed on the power unit case L-side element 59A, and is fixed to the unit case L-side element 59A using the mounting bolts 16. Further, the electric motor 13 is provided with a motor support boss 7 extending from the clutch case 73 forward of the power unit 76.
8 is fixed using mounting bolts 71. Therefore, in the fourth modification, the electric motor 13 is supported by the unit case L-side element 59A and the clutch cover 77, so that the reinforcing structure of the unit case L-side element 59A can be simplified.

In the fourth modified example, the gear center line Q, which is the meshing position of the primary drive gear 58 and the primary driven gear 55, is provided so as to coincide with the center line O and the center line of the power unit 76 in plan view of the vehicle body. ing. As a result, the right and left weight balance of the power unit 76 is adjusted, and the steering stability of the motorcycle with the electric motor can be improved. The power generation magnet 56 is
As in the third modification of the second embodiment, the magnet cover 7
9.

FIG. 24 is a right side view showing a second embodiment of the motorcycle with an electric motor according to the present invention, and FIG.
FIG. 4 is a sectional view taken along line XXIII-XXIII of FIG. In the second embodiment, the same parts as those in the previous embodiment are denoted by the same reference numerals, and the description is omitted.

The power unit 8 in the second embodiment
At 0, the electric motor 13 is fixed to the unit case R-side element 81B using the mounting bolts 16 and the generator 17 is fixed to the unit case L-side element 81A using the mounting bolts 18. Unit case L-side element 81A and unit case R-side element 8
1B is joined at the gear center line Q of the primary drive gear 58 and the primary driven gear 55,
The power unit case 81 is configured. In the second embodiment, the gear center line Q is configured to coincide with the power unit center line O of the power unit 80.

In the second embodiment, the center line R of the rear wheel 10 is
1 is installed eccentrically from the power unit 80 in the opposite direction of the V-belt transmission mechanism 12 by the offset amount ε, so that the type and shape of the rear wheel 10 and the outer diameter of the rear wheel 10 are less restricted, and The attachment and detachment of the wheel 10 can be facilitated. Reference symbol R2 indicates the center line of the large-diameter rear wheel 10.

The motor shaft 5 of the electric motor 13
7 and the generator shaft 40 of the generator 17 are rotatably fitted to the primary drive gear 58 and are coaxial. Since the generator shaft 40 is configured coaxially with the motor shaft 57 as described above, the driving structure of the generator 17 can be simplified, and the dead space can be effectively used.

Further, a primary driven gear 55 is formed integrally with the drive shaft 22 of the V-belt transmission mechanism 12. In the unit case L-side element 81A, a reinforcing rib 82 is formed between the drive shaft 22 and the transmission drive shaft 33. Thus, the unit case L side element 81A
Since the reinforcing ribs 82 are formed in the unit case L, the rigidity of the unit case L-side element 81A can be improved by utilizing the dead space.

Further, as shown in FIG. 24, since the mount bracket 9 of the power unit 80 is installed between the electric motor 13 and the center stand 83, the power unit 80 can be suspended by effectively utilizing the dead space. Further, when the electric motor 13 is installed also at the broken line position in FIG. 24 and a plurality of electric motors are mounted, the mount bracket 84 is installed at an intermediate position between the plurality of electric motors 13 as shown by a two-dot chain line. Thus, effective use of the dead space may be achieved.

By the way, in each of the above embodiments, the batteries 44 are arranged in at least one of the front, rear, and lower portions of the article storage chamber 6, but by doing so, the dead space around the article storage chamber 6 is very effectively reduced. Can be used for

[0069]

As described above, according to the motorcycle with an electric motor according to the present invention, a plurality of electric motors can be installed in the power unit by effectively utilizing the dead space inside the vehicle body, and the riding comfort can be improved. Steering stability can be improved.

[Brief description of the drawings]

FIG. 1 is a sectional view taken along the line II of FIG. 2;

FIG. 2 is a right side view showing a reference example of the motorcycle with an electric motor according to the present invention.

FIG. 3 is a plan view of the motorcycle with an electric motor shown in FIG. 2;

FIG. 4 is a sectional view taken along the line IV-IV in FIG. 1;

FIG. 5 is a schematic horizontal sectional view showing a power unit of a motorcycle with an electric motor according to first and fourth modifications of the reference example of the present invention.

FIG. 6 is a left side view showing a motorcycle with an electric motor equipped with the power unit of FIG. 5;

FIG. 7 is a plan view of the motorcycle with an electric motor shown in FIG. 6;

FIG. 8 is a left side view showing a motorcycle with an electric motor according to a second modification of the reference example of the present invention.

FIG. 9 is a plan view of the motorcycle with an electric motor shown in FIG. 8;

FIG. 10 is a left side view showing a motorcycle with an electric motor according to a third modification of the reference example of the present invention.

FIG. 11 is a plan view of the motorcycle with an electric motor shown in FIG. 10;

FIG. 12 is a schematic horizontal sectional view showing a power unit of a motorcycle with an electric motor according to a fifth modification of the reference example of the present invention.

FIG. 13 is a schematic horizontal sectional view showing a power unit of a motorcycle with an electric motor according to a sixth modification of the reference example of the present invention.

FIG. 14 is a sectional view taken along the line XIV-XIV in FIG. 15;

FIG. 15 is a left side view showing the first embodiment of the motorcycle with an electric motor according to the present invention.

FIG. 16 is a plan view of the motorcycle with an electric motor shown in FIG. 15;

FIG. 17 is a left side view showing a motorcycle with an electric motor according to a first modification of the first embodiment of the present invention.

FIG. 18 is a plan view of the motorcycle with an electric motor shown in FIG. 17;

FIG. 19 is a left side view showing a motorcycle with an electric motor according to a second modification of the first embodiment of the present invention.

FIG. 20 is a plan view of the motorcycle with an electric motor shown in FIG. 19;

FIG. 21 is a schematic horizontal sectional view showing a power unit of a motorcycle with an electric motor in a third modified example of the first embodiment of the present invention.

FIG. 22 is a schematic horizontal sectional view showing a power unit of a motorcycle with an electric motor according to a fourth modification of the first embodiment of the present invention.

FIG. 23 is a sectional view taken along the line XXIII-XXIII in FIG. 24;

FIG. 24 is a right side view showing a second embodiment of the motorcycle with an electric motor according to the present invention.

FIG. 25 is a plan view of the motorcycle with an electric motor shown in FIG. 24;

[Description of Signs] 8 Power unit 10 Rear wheel 12 V belt transmission mechanism 13 Electric motor 17 Generator 21 Motor shaft 22 Drive shaft 23 Integrated shaft 24 Generator drive sprocket 40 Generator shaft 41 Generator driven shaft 42 Generator driven sprocket 43 Generator drive chain 53 Power unit 59 Power unit case 68 Motor support boss 69 Clutch cover 70 Clutch cover boss 71 Mounting bolt 80 Power unit R1, R2 Rear wheel center line ε Rear wheel offset amount O Power unit center line

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) B62M 7/02 B62M 7/02 D

Claims (6)

[Claims] 1. A steering wheel is provided at a front portion of a vehicle body frame,
A motorcycle with an electric motor that suspends a power unit having a power transmission mechanism that transmits a driving force of an electric motor to a rear wheel below a seat and behind a front wheel, wherein a plurality of the electric motors are installed on an outer periphery of the power unit. The motor shaft of the electric motor and the drive shaft of the power transmission mechanism are separate shafts, and the driving force of the motor shaft is transmitted to the drive shaft by a plurality of gears. A motorcycle with an electric motor, characterized in that the engagement position is substantially on the center line of the vehicle body. 2. A vehicle having a handle at a front portion of a body frame,
A motorcycle with an electric motor that suspends a power unit having a power transmission mechanism that transmits a driving force of an electric motor to a rear wheel below a seat and behind a front wheel, and a plurality of the electric motors are installed in the power unit. A motorcycle with an electric motor, wherein a suspension position of the power unit on the vehicle body frame is between the plurality of electric motors as viewed from the side of the vehicle body. 3. A handle is provided at a front portion of the vehicle body frame,
A motorcycle with an electric motor that suspends a power unit having a power transmission mechanism for transmitting a driving force of an electric motor to a rear wheel below a seat and behind a front wheel, wherein the electric motor is at least substantially at a front end position at a front part of the power unit. ,
A two-wheeled vehicle with an electric motor, wherein a plurality of the motorized vehicles are provided separately at either a front upper position or a front lower position. 4. The electric motor according to claim 1, further comprising
The two-wheeled vehicle with an electric motor according to claim 3, wherein the power unit is arranged in the power unit so as to form a mold. 5. A vehicle having a handle at a front portion of a body frame,
A motorcycle with an electric motor that suspends a power unit having a power transmission mechanism that transmits a driving force of an electric motor to a rear wheel below a seat and behind a front wheel, and a plurality of the electric motors are installed in the power unit. A motorcycle with an electric motor, wherein the power unit is suspended from the body frame between the electric motor and the center stand. 6. A vehicle having a handle at a front portion of a body frame,
A motorcycle with an electric motor that suspends a power unit having a power transmission mechanism that transmits a driving force of an electric motor to a rear wheel below a seat and behind a front wheel, and stores luggage such as a helmet by opening and closing the seat. A motorcycle with an electric motor, comprising: a plurality of electric motors installed in the power unit; and a battery disposed at least in one of front, rear, and lower parts of the article storage chamber.