JPH05105145A - Motorcycle driven by electric motor - Google Patents

Abstract

PURPOSE:To increase the battery mounting quantity. CONSTITUTION:As for a scooter type motorcycle, the front part of a power unit 10 is pivotally supported on a frame 1 under a seat and installed in vertically swingable manner. A plurality of batteries 8 are arranged in parallel in the height direction between the front part of the power unit in front of rear wheels and a seat 7. The battery 8 is mounted in a relatively wide space in front of the rear wheels 18, keeping the swing range of the power unit 10 narrow.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric motorcycle which uses an electric motor as a drive source for traveling.

[0002]

2. Description of the Related Art Recently, as a motorcycle, one having a structure in which a rear wheel is driven by an electric motor has been attracting attention. In this type of electric motorcycle, an electric motor is attached instead of the engine, and a plurality of batteries for supplying electric power to the electric motor are mounted on the vehicle body.

[0003]

However, in the conventional electric two-wheeled vehicle, in addition to the heavy electric motor, a plurality of relatively heavy batteries must be mounted to enable long-time running. The location of the battery was a problem.

That is, in a scooter type motorcycle, it is conceivable to dispose a battery in the footrest portion, but if this is done, the footrest height becomes high and the wheelbase becomes long.

[0005]

In an electric motorcycle according to the present invention, a front portion of a power unit including an electric motor, a rear wheel drive power transmission device, and a rear wheel is pivotally supported on the frame below the seat to move up and down. A plurality of batteries that are swingably mounted and that supply power to the electric motor are arranged side by side in the height direction between the front portion of the power unit in front of the rear wheels and the seat.

[0006]

The battery is located below the seat, the swing range of the power unit is narrow, and the battery is mounted in a relatively wide space in front of the rear wheels.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to FIGS. FIG. 1 is a side view of an electric motorcycle according to the present invention, in which the vehicle body cover is removed. 2 is a plan view of an electric motorcycle according to the present invention, FIG. 3 is a sectional view taken along line III-III in FIG. 1, FIG. 4 is a sectional view taken along line IV-IV of a vehicle body portion in FIG. 1, and FIG. It is a perspective view showing a battery box used for a two-wheeled vehicle.

In these drawings, reference numeral 1 denotes a frame, which is a head pipe 5 for supporting a front fork 4 having a front wheel 2 and a handle 3 in a steerable manner.
Left and right 2 extended rearward from this head pipe 5
It is composed of a book main pipe 6 and the like.

The main pipe 6 is formed by bending a pipe having a circular cross section, and the left and right pipes are provided at the same height position so as to overlap each other when viewed from the lateral direction of the vehicle.

The main pipe 6 is bent downward between the head pipe 5 and the seat 7, and the main pipe 6 extends forward from the head pipe 5 while being inclined rearward, and the front and rear direction of the vehicle body. It is composed of a horizontal portion which is located in the central portion and constitutes a low floor portion, and a rear portion which is inclined below the seat 7 so as to rise rearward and extends to the rear portion of the vehicle body. The left and right main pipes 6 are four cross pipes 6a-
It is connected by 6d.

The seat 7 is supported and fixed to the main pipe 6 via a battery box 9 which houses a battery 8.

A power unit 10 with a built-in electric motor as a unit swing type prime mover, which will be described later, is swingably supported by a support shaft 11 at a bent portion on the rear side of the horizontal portion of the main pipe 6. There is. In addition, the support shaft 11 is arranged with its axial direction oriented in the vehicle width direction.

Further, a controller 12 for controlling the power unit and a luggage basket 13 as a luggage storage member are mounted on the horizontal portion of the main pipe 6. The controller 12 is mounted so as to face between the left and right main pipes 6, and as shown in FIG. 3, is mounted and fixed on a controller bracket 12a that is bridged between the left and right main pipes 6. There is.

The baggage basket 13 has a structure in which the baggage is stored from above, and the cross pipes 6b and 6c are provided.
-Shaped support brackets 13a, 13b attached to the
It is placed and fixed on.

As shown in FIG. 5, the battery box 9 is integrally formed of a synthetic resin in a box shape that opens upward. Then, as shown in FIG. 4, the bottom of the box-shaped box body 9a is fixed to the frame 1 by bolting to the support bracket 1a of the frame 1. The support bracket 1a is provided so as to extend between the left and right main pipes 6.

In the battery box 9 thus formed, the battery 8 is, as shown in FIGS. 1 and 4,
In the horizontal state, a plurality of sheets are stacked vertically and stored. A rubber sheet 14 is interposed between the batteries 8 that are vertically adjacent to each other. In this embodiment, four batteries 8 are stored in the battery box 9.

Reference numeral 9b is a battery band for fixing the battery 8 to the battery box 9, and the battery band 9b is bolted to a bracket 9c protruding from the opening of the battery box 9 so that the battery 8 is placed above. It is configured to be pressed from.

A front bracket 9d for supporting the front portion of the seat 7 is formed on the front portion of the battery box 9, and a rear bracket 9e for supporting the rear portion of the seat 7 is formed on the rear portion. ..

The front portion of the seat 7 is pivotally supported by the front bracket 9d via the support shaft 7a, and the rear portion of the seat 7 is, as shown in FIG. 4, a support member 15 and a load receiving member made of rubber on the rear bracket 9e. It is supported through 16. The supporting member 15 is bolted to the rear bracket 9e, and the load receiver 16 is fixed to the back surface of the seat 7 to support the supporting member 1.
5 is in contact with the upper surface.

That is, the battery box 9 below the seat is exposed by raising the rear portion of the seat 7 to erect the seat 7.

Further, a charging socket 17 connected to a charging cord (not shown) is attached to the front portion of the battery box 9 between the battery storage portion and the front bracket 9d. .. This charging socket 1
7 is configured to supply a charging current to the battery 8 by connecting a charging cord. In addition,
As the charging cord, a cord whose end opposite to the charging socket 17 is connected to a charger (not shown) is used.

The power unit 10 has almost the same structure as the unit swing type engine used in the conventional motorcycle except for the difference in the configuration of the engine and the electric motor, and the rear wheel 18 is rotatable. Supporting transmission case 1
0a and the electric motor 1 mounted in the transmission case 10a
0b and a V-belt type automatic transmission 10c.

The electric motor 10b is positioned approximately at the center in the vehicle width direction, and the rotating shaft that supports the rotor thereof is a so-called horizontal type, which is oriented in the vehicle width direction. The coil, which is the stator of the electric motor 10b, is connected to the battery 8 via the controller 12.

The controller 12 is configured to control the amount of current supplied from the battery 8 to the electric motor 10b according to the amount of operation of the throttle grip 3a of the handle 3. That is, the rotation speed of the electric motor 10b is changed by operating the throttle grip 3a.

The front part of the transmission case 10a is pivotally supported on the frame 1 by the support shaft 11, and between the rear part of the transmission case 10a and the rear end part of the main pipe 6 located on the left side of the vehicle body, 1 A book rear cushion unit 19 is interposed.

Reference numeral 20 is a vehicle body cover.
Is a front upper cover 21 and a left / right split type rear upper cover 22 located above the main pipe 6,
Undercover 23 located below the main pipe 6
It has and. The battery box 9 is surrounded by a rear upper cover 22 in front, rear, left and right.

In FIGS. 1 to 3, 24 is a footrest and 25 is a driver's foot. The footrest 24
Is attached to the frame 1 via a support rod 24a penetrating the left and right main pipes 6. Further, 26 is a seat lock device.

In the electric motorcycle constructed as described above, when the battery 8 is charged, the seat 7 is erected to open the space below the seat as shown by the chain double-dashed line in FIG. Connect to.

To attach and detach the battery 8, the seat 7 is raised and the battery cover 9b is placed as described above.
Perform with the removed.

Therefore, in the electric motorcycle constructed as described above, the battery 8 is mounted below the seat, and the luggage is stored in the luggage car 13 located between the head pipe 5 and the seat 7.

In this embodiment, the battery box 9
Although an example in which four batteries 8 are vertically stacked and stored in a horizontal state is shown in FIG. 6, it is also possible to store the batteries 8 in a vertical state as shown in FIG.

FIG. 6 is a perspective view showing another example of the battery box, in which the same or equivalent members as those described in FIG. 5 are designated by the same reference numerals and detailed description thereof will be omitted.

In FIG. 6, reference numeral 31 is a partition plate provided upright in the battery box 9. The partition plate 31 divides the inside of the battery box body 9a into two chambers, left and right. The battery box 9 shown in this example includes a partition plate 3
Battery 8 in the left and right storage spaces partitioned by 1
Are stored vertically, and two of them are stored vertically in the storage space on one side. Even with this structure, four batteries 8 can be stored, and the same effect as that of the above embodiment can be obtained.

[0034]

As described above, in the electric motorcycle according to the present invention, the front portion of the power unit including the electric motor, the power transmission device for driving the rear wheels, and the rear wheels is pivotally supported on the frame below the seat. A plurality of batteries, which are mounted so as to be swingable up and down, are arranged side by side in the height direction between the front portion of the power unit in front of the rear wheels and the seat, so that the batteries are below the seat, The unit has a narrow swing range and is mounted in a relatively wide space in front of the rear wheels.

Therefore, many batteries can be mounted without lengthening the wheel base or raising the foot rest.

[Brief description of drawings]

FIG. 1 is a side view of an electric motorcycle according to the present invention.

FIG. 2 is a plan view of the electric motorcycle according to the present invention.

3 is a sectional view taken along line III-III in FIG.

FIG. 4 is a sectional view taken along the line IV-IV of the vehicle body portion in FIG.

FIG. 5 is a perspective view showing a battery box used in the electric motorcycle according to the present invention.

FIG. 6 is a perspective view showing another example of the battery box.

[Explanation of symbols]

 1 frame 5 head pipe 7 seat 8 battery 9 battery box 10 power unit 13 luggage basket

Claims (1)

[Claims] 1. A scooter type motorcycle having a frame bent downward between a head pipe and a seat, wherein a front portion of a power unit including an electric motor, a rear wheel drive power transmission device and a rear wheel is seated. A plurality of batteries, which are pivotally supported on the frame below and swingably up and down, and in which a plurality of batteries for supplying power to the electric motor are arranged side by side in the height direction between the front portion of the power unit in front of the rear wheels and the seat. An electric motorcycle characterized by.