JP3172951B2 - Electric motorcycle - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric two-wheeled vehicle that runs using an electric motor as a drive source.

[0002]

2. Description of the Related Art In recent years, motorcycles having a structure in which a rear wheel is driven by an electric motor have attracted attention. In this type of electric motorcycle, an electric motor is mounted instead of an engine, and a plurality of batteries for supplying power to the electric motor are mounted on a vehicle body.

[0003]

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

When the scooter type motorcycle is driven by an electric motor, the battery may be mounted below or behind the seat. However, when a large number of heavy batteries are mounted on such a portion, there is a problem that the center of gravity of the vehicle body becomes high. On the other hand, there has been a demand for motorcycles to mount a large amount of stored items.

[0005]

An electric motorcycle according to the present invention has a frame bent downward between a head pipe and a seat, and includes an electric motor, a rear wheel drive power transmission device, and a rear wheel. In the electric motorcycle in which the power unit is pivotally mounted on the frame below the seat, the battery storage box and the luggage storage box for storing a plurality of batteries for supplying power to the electric motor are arranged such that the battery storage box is located on the lower side. A storage box formed integrally is disposed between the head pipe and the seat, and a footboard is disposed on both sides of a lower end of the storage box so as to extend laterally. A bottom portion of the bent portion of the frame is arranged inside, and the storage box is placed and fixed above the bottom portion. The luggage storage box has a structure that extends over substantially the entire area of the side portion and accommodates the battery along the bottom side portion, and has a battery attachment / detachment opening formed on one side so as to face the side of the vehicle body. Is a structure extending over substantially the entire space between the head pipe and the front end of the seat, and has a luggage loading / unloading opening formed on one side so as to be oriented in the same direction as the battery attaching / detaching opening. Open the box and the battery storage box,
It is configured to be opened and closed by one lid formed so as to straddle both storage boxes.

[0006]

The battery is fully mounted on the lowest position of the frame, lowering the center of gravity of the vehicle body, and a large luggage storage space can be obtained above the battery. Also, the bottom wall of the luggage storage box can be formed by the upper wall of the battery storage box, and the footboard can be disposed at a low position without interfering with the frame. Further, the rigidity can be improved as compared with a structure in which the luggage storage box and the battery storage box are formed separately and stacked vertically. Furthermore,
Both the battery storage box and the luggage storage box can have a large capacity, and when the lid is opened, both storage boxes open greatly to the side of the vehicle body.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below in detail with reference to FIGS. FIG. 1 is a side view of an electric motorcycle according to the present invention, in which a state in which a vehicle body cover is removed is shown. 2 is a plan view of the electric motorcycle according to the present invention, FIG. 3 is a sectional view taken along line III-III in FIG. 1, and FIG.
FIG. 5 is a perspective view of a storage box used for the electric motorcycle according to the present invention.

In these figures, reference numeral 1 denotes a frame for a scooter type motorcycle. The frame 1 comprises a head pipe 5 for supporting a front fork 4 having a front wheel 2 and a handle 3 so as to be steerable, and Front pipe 6 consisting of one pipe material extended downward
And a pair of left and right rear pipes 7 connected to the front pipe 6.

The lower end of the front pipe 6 is bent substantially horizontally at the lower part thereof, and the rear pipe 7 is welded to the horizontal part.

The rear pipe 7 comprises a horizontal portion welded to the front pipe 6 and an inclined portion bent at the rear of the horizontal portion and extending upward. The bent portion is provided with a unit swing type motor described later. The power unit 8 with a built-in electric motor is swingably supported via a support shaft 9. Note that the support shaft 9 is disposed with the axial direction directed in the vehicle width direction.

A storage box 12 for storing a battery 10 and luggage 11 such as a helmet is fixedly mounted on the horizontal portion of the front pipe 6 and the horizontal portion of the rear pipe 7. The two horizontal portions constitute the bottom portion of the bent portion of the frame according to the present invention. Further, a seat 16 is supported on the inclined portion of the rear pipe 7 via brackets 13 and 14 and a storage box 15 under the seat, and a controller 17 for controlling a power unit is supported and fixed.

The power unit 8 has almost the same structure as a unit swing type engine used in a conventional motorcycle, except for the difference between the engine and the electric motor. Transmission case 8a to be supported
And an electric motor 8b and a V-belt type automatic transmission 8c mounted in the transmission case 8a.

The electric motor 8b is positioned substantially at the center of the vehicle in the vehicle width direction, and its rotating shaft supporting the rotor is of a so-called horizontal type which is oriented in the vehicle width direction. Also,
The coil, which is the stator of the electric motor 8b, is connected to the battery 10 via the controller 17. The controller 17 determines the amount of current supplied from the battery 10 to the electric motor 8b by using the throttle grip 3
It is configured to control according to the operation amount at a.
That is, by operating the throttle grip 3a, the rotation speed of the electric motor 8b changes.

The front of the transmission case 8a is pivotally supported on the frame 1 by the support shaft 9, and the transmission case 8a
One rear cushion unit 19 is interposed between the rear portion of the electric motor 8b and the rear pipe 7 at the center in the vehicle width direction.

As shown in FIG. 5, the storage box 12 is integrally formed of synthetic resin in a box shape opened on the left side of the vehicle body. A luggage storage unit 1 is formed above and behind the battery storage unit 12a.
2b is formed. Battery compartment 12a
Has a battery attachment / detachment opening formed on the left side of the vehicle body so as to point toward the side of the vehicle body, and the luggage compartment 12b has a luggage access opening / closing opening on the left side of the vehicle body in the same direction as the battery attachment / detachment opening. It is formed to be oriented. By storing the battery 10 in the battery storage section 12a, the battery 10 is
In the frame 1 which is bent downward between the upper and lower portions of the bent portion, a plurality of portions are attached over substantially the entire area of and along the bottom portion in a side view. The battery 10 is attached to and detached from the battery housing 12a from the side of the vehicle body. The battery storage section 12a constitutes a battery storage box according to the present invention, and the battery storage section 12a
The luggage storage section 12b provided on the upper side of "a" constitutes a luggage storage box according to the present invention. The luggage storage section 12b is formed to extend over substantially the entire space between the head pipe 5 and the front end of the seat 16.

A battery cable (not shown) for connecting the front and rear batteries 10 is passed through a front plate and a rear plate of the storage box 12 and a partition plate 12c which defines the front and rear of the battery storage portion 12a. Notch 1 for
2d is formed.

As shown in FIG. 3, the storage box 12 is provided with a front pipe 6 and a rear pipe 7 via a support plate 12e projecting from the bottom surface and a rubber bush 20.
The brackets 12f projecting from the front and rear portions are mounted on the bracket 1 for the storage box of the frame 1.
It is fixed to the frame 1 by being bolted to a and 1b.

The four battery storage sections 12a
Is the battery 10 in the state where the battery 10 is stored.
12g of battery band in the opening to prevent deviation
Is attached.

Further, openings of the battery storage section 12a and the luggage storage section 12b are provided with a vehicle body cover 21 for covering the vehicle body.
Is configured to be closed by one lid 22 that constitutes a part of. As shown in FIG. 3, the lid 22 is formed so as to straddle the battery storage section 12a and the luggage storage section 12b.

As shown in FIG. 3, the vehicle body cover 21 has a top cover 21a having a structure covering the upper half from the front to the rear of the vehicle body, and a left and right side connected to the lower side of the left and right side plate portions of the top cover 21a. And an inner fender 21c between the left and right foot boards 21b, 21b and below the storage box 12.

The lid 22 is disposed at a position corresponding to the opening of the storage box 12 in the top cover 21a, and is configured to be opened and closed by moving the upper part of the top cover 21a toward and away from the vehicle body with the lower edge as a center. I have. Note that a lock device 24 having a structure in which the lock lever 23 is engaged with the storage box 12 is mounted above the lid 22. A seal member 25 is interposed between the lid 22 and the opening edge of the storage box 12 to prevent rainwater or the like from entering.

The footboard 21b is disposed on both sides of the lower end of the storage box 12, is fixed to the rear pipe 7 via a mounting bracket 26, and extends to the side. By providing the foot board 21b in this manner, a substantially horizontal footrest portion protruding laterally from the left and right side plate portions of the top cover 21a is formed. In FIG. 2, a portion indicated by a two-dot chain line A indicates a portion on which the occupant's foot is put.

As shown in FIG. 3, the portion of the inner fender 21c facing the horizontal portion of the front pipe 6 and the rear pipe 7 is curved upward from both left and right sides. When the inner fender 21c is configured in this manner, a traveling wind passage 27 that guides traveling wind to the power unit 8 is formed below the frame 1. The traveling wind is indicated by an arrow B in FIG.

The seat 16 has a rear portion pivotally supported by a rear bracket on the storage box 15 under the seat, and raises the front portion of the seat upward as shown by a two-dot chain line in FIG. Thereby, the storage box 15 under the seat can be opened.
As shown in FIG. 4, the under-seat storage box 15 is formed in a box shape that opens upward.

A bracket 14 for supporting the under-seat storage box 15 is provided so as to span the left and right rear pipes 7, and pivotally supports the upper end of the rear cushion unit 19 at a position which is the center in the vehicle width direction. The rear cushion unit bracket 14a is welded. FIG.
The middle 16a is a load receiver fixed to the back of the sheet 16,
The load receiver 16a is made of rubber, and is configured to come into contact with the upper edge of the lower sheet storage box 15. Reference numeral 16b denotes a seat lock device.

A charger 2 for charging the battery 10 is located at a position behind the storage box 15 under the seat.
8 are arranged. The charger 28 is configured to charge the battery 10 by changing an AC 100V power supply to a DC 12V, and a charging socket 28a serving as an input unit is provided with a charging socket connected to a charging cord (not shown). Have been. As the charging cord, one having a plug connected to the charging socket at one end and a plug connected to a household outlet or the like at the other end is used.

The charging port 28a of the charger 28 is disposed at a position below the seat 16.

In the electric motorcycle constructed as described above, when the rotation shaft of the electric motor 8b is rotated by operating the throttle grip 3a, the rotational force is transmitted to the rear wheel 18 via the V-belt type automatic transmission 8c. To run.

The charging operation of the battery 10 is performed by erecting the seat 16 to expose the charging port 28a of the charger 28 and connecting a charging cord to a charging socket of the charger 28 in this state.

Further, to attach and detach the battery 10 in the storage box 12, the lid 22 is opened and the battery band 12g is removed. When the lid 22 is opened, the luggage storage section 12b of the storage box 12 is also opened, and the luggage 11 such as a helmet therein can be taken in and out.

Therefore, in the electric motorcycle configured as described above, the battery 10 is fully mounted on the lowest portion of the frame 1, so that the center of gravity of the vehicle body is lowered. Moreover, a large luggage storage space can be obtained above the battery 10. Further, a storage box 1 in which a battery storage part 12a and a luggage storage part 12b are integrally formed.
2 is disposed between the head pipe 5 and the seat 16, and a foot board 21 b is disposed on both sides of a lower end of the storage box 12 so as to extend laterally, and is disposed inside the foot board 21 b in the vehicle width direction. Bottom part of bent part of frame 1 (horizontal part of front pipe 6 and horizontal part of rear pipe 7)
And the storage box 12 is placed and fixed above the bottom portion, so that the battery storage
The bottom wall of the luggage storage section 12b can be formed by the upper wall of the storage box 12a, and the height of the storage box 12 is reduced despite the configuration in which the two storage sections are arranged to be stacked vertically. Can be suppressed. In addition, the footboard 21b does not interfere with the bottom of the bent portion of the frame 1 supporting the storage box 12, and the footboard 2
Since 1b can be disposed below the bottom side, the footboard 21b can also be provided at a lower position. Further, the battery storage section 12a and the luggage storage section 12
The rigidity can be improved as compared with a structure in which b is formed separately and vertically stacked, and the structure of a bracket for fixing to the frame 1 can be simplified or the number of the brackets can be reduced. Space saving can be achieved. Furthermore, the battery storage portion 12a has a structure in which the battery 10 extends substantially over the entire bottom portion of the frame when viewed from the side and stores the battery 10 along the bottom portion. An opening for attaching and detaching the battery is formed so as to face the luggage storage portion 12b.
Has a structure that extends over substantially the entire space between the head pipe 5 and the front end of the seat, and has a luggage loading / unloading opening formed on one side so as to point in the same direction as the battery attaching / detaching opening. Since the opening of the part 12b and the opening of the battery storage part 12a are opened and closed by one lid 22 formed so as to straddle both storage parts,
Not only can both the battery storage section 12a and the luggage storage section 12b have a large capacity, but also by opening the lid 22, both storage sections open greatly to the side of the vehicle body, so that the battery 10 can be attached and detached and luggage can be taken in and out. It can be done easily.

As shown in this embodiment, the sheet 16
When the storage box 15 under the seat is mounted below the vehicle, more luggage can be loaded and the usability is improved.

Further, as shown in the present embodiment, when the battery storage portion 12a and the luggage storage portion 12b of the storage box 12 are opened in the same direction, and both are closed by the same lid 22, two types of storage are possible. In order to cover the part, it is possible to use only a minimum number of parts. Therefore, it is advantageous in reducing the weight and is inexpensive.

[0034]

As described above, the electric motorcycle according to the present invention has the frame bent downward between the head pipe and the seat, and the electric motor, the rear wheel drive power transmission device, and the rear wheel. In an electric motorcycle in which a provided power unit is pivotally mounted on the frame below the seat, a battery storage box for storing a plurality of batteries for supplying power to the electric motor and a luggage storage box are arranged such that the battery storage box is located on the lower side. A storage box formed integrally with the head pipe and the seat, and a footboard is provided on both sides of a lower end of the storage box so as to extend laterally. A bottom portion of the bent portion of the frame is disposed inside in the direction, and the storage box is placed and fixed above the bottom portion, and the battery storage box is viewed from a side. The luggage storage device has a structure that extends over substantially the entire bottom portion and accommodates the battery along the bottom portion, and has a battery attachment / detachment opening formed at one side so as to face the side of the vehicle body. The box is formed so as to extend over substantially the entire space between the head pipe and the front end of the seat, and has a luggage loading / unloading opening formed on one side thereof in the same direction as the battery attaching / detaching opening. Since the opening of the storage box and the battery storage box is opened and closed by a single lid formed so as to straddle both storage boxes, the battery is fully mounted on the lowest position of the frame and the center of gravity of the vehicle body is adjusted. And a large luggage storage space is obtained above the battery. Therefore, an electric motorcycle having a low center of gravity and a large load capacity can be obtained.

In addition, since the bottom wall of the luggage storage box can be formed by the upper wall of the battery storage box, the storage box is disposed despite the two storage boxes being vertically stacked. The height of the box can be kept low. In addition, since the footboard does not interfere with the bottom of the bent portion of the frame supporting the storage box and the footboard can be disposed below the bottom, the footboard is also provided at a lower position. Can be. Furthermore, it is possible to improve the rigidity as compared with a structure in which the battery storage box and the luggage storage box are formed separately and stacked vertically, and the structure of the bracket for fixing to the frame can be simplified or the number of the brackets can be reduced. Since it can be reduced, space can be saved. As a result, as described above, the height of the storage box can be reduced and the foot boat can be provided at a lower position, so that a compact electric motorcycle can be configured. Furthermore, not only can both the battery storage box and the luggage storage box have a large capacity, but by opening the lid, both storage boxes open greatly to the side of the vehicle body, making it easy to attach and detach the battery and take out and load the luggage. Can be done. In addition, the battery can be attached and detached even when the luggage is stored in the luggage storage box, and the operation can be performed at a lower position.

In addition, since the heavy electric motor and the battery can be arranged at the position of the center of gravity between the front and rear wheels, there is an effect that the mass can be concentrated.

Further, when the luggage storage box is disposed above the battery, the bottom of the luggage storage box can be formed flat because the battery is usually formed in a substantially rectangular box shape. In addition, since the frequently used luggage storage box is positioned at a high position, it is convenient to use.

[Brief description of the 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.

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

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

FIG. 5 is a perspective view of a storage box used for the electric motorcycle according to the present invention.

[Explanation of symbols]

 1 frame 5 head pipe 6 front pipe 7 rear pipe 8 power unit 9 support shaft 10 battery 12 storage box

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-3-217384 (JP, A) JP-A-1-148679 (JP, A) JP-A-62-155181 (JP, A) 57788 (JP, A) JP-A-3-38479 (JP, A) JP-A-3-63064 (JP, U) JP-A-3-91884 (JP, U) (58) Fields investigated (Int. ⁷ , DB name) B62J 9/00 B60L 11/18

Claims (1)

(57) [Claims] 1. A power unit having a frame bent downward between a head pipe and a seat, and comprising a motor, a rear wheel drive power transmission device, and a rear wheel, is pivotally supported by the frame below the seat. The front of the electric motorcycle
A battery that houses multiple batteries that supply power to the motor
ー The battery storage box is positioned below the storage box and the luggage storage box.
The storage box integrally formed so that
This storage box is located between the
On both sides of the lower edge of the foot so that it extends sideways
The frame is located inside the footboard in the vehicle width direction.
The bottom part of the bent part of the
Place the storage box on top of the
The lee storage box covers substantially the entire area of the bottom portion in side view.
Extend to store the battery along the bottom part.
And the side of the vehicle is directed to one side.
The luggage storage box is formed with
Is substantially the entire space between the head pipe and the front end of the seat.
Luggage loading and unloading on one side as a structure extending over the area
Orient the opening to the same direction as the battery opening
The luggage storage box and the battery storage
One that is formed so that the opening of the box straddles both storage boxes
An electric motorcycle characterized in that it is configured to be opened and closed with a lid .