JPH05105142A - Motorcycle driven by electric motor - Google Patents

Abstract

PURPOSE:To eliminate the deflection of the weight distribution on the front and rear wheels and set a foot placing part low. CONSTITUTION:A power unit 8 equipped with an electric motor 8b is installed on a scooter type motorcycle equipped with a leg shield 13, through the pivotal support on a frame 1. In front of the leg shield 13, a plurality of batteries 15 which supply elasticity to the electric motor 8a are installed along the frame 1. On the front wheel 2 side from the center in the longitudinal direction of a car body, the battery 15 is positioned, and the power unit 8 is positioned on a rear wheel 21 side. The car body weight is distributed nearly uniformly to the front wheels 2 and rear wheels 21, and the battery 15 is arranged at the part other than a foot placing part.

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, a plurality of relatively heavy batteries must be mounted in order to enable long-term running, and the mounting position of the batteries is a problem. there were.

That is, the weight distribution between the front and rear wheels tends to be biased depending on the position of the battery. In order to solve such a problem, for example, in a scooter type motorcycle, it is conceivable to arrange a battery at a footrest position. However, if the battery is arranged at that position, the occupant's foot must be placed on the battery, so the seat height must be increased.

[0005]

In the electric motorcycle according to the present invention, a power unit including an electric motor, a rear wheel drive power transmission device, and a rear wheel is pivotally supported and attached to the frame below the seat, and the leg is attached. A plurality of batteries for supplying electric power to the electric motor are mounted in front of the shield along the frame.

[0006]

Since the battery, which is a heavy object, is located on the front wheel side with respect to the center of the vehicle body in the front-rear direction, and the power unit is located on the rear wheel side, the weight of the vehicle body is substantially evenly distributed to the front wheels and the rear wheels. In addition, the battery will be mounted on a part other than the footrest part.

[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, FIG. 2 is a plan view of the same, and FIG. 3 is II in FIG.
FIG. 4 is a sectional view taken along the line I-III, and FIG.
IV line sectional drawing, FIG. 5 is a perspective view showing a battery box portion, and FIG. 6 is a perspective view showing a luggage carrier used in the electric motorcycle according to the present invention.

In these drawings, reference numeral 1 denotes a frame for a scooter type motorcycle. The frame 1 includes a head pipe 5 for steerably supporting a front fork 4 having a front wheel 2 and a handle 3, and a head pipe 5 from the head pipe 5. Front pipe 6 made of one piece of tubing that extends backward and downward
And a pair of left and right rear pipes 7, 7 connected to the front pipe 6.

The front pipe 6 has a lower end portion which is inclined rearward and downward bent substantially horizontally, and a rear pipe 7 is welded to the horizontal portion.

The rear pipe 7 is composed of a horizontal portion welded to the front pipe 6 and an inclined portion which is bent at the rear portion of the horizontal portion and extends rearward and upward. The bent portion serves as a unit swing type prime mover described later. A power unit 8 with a built-in electric motor is swingably supported via a support shaft 9. In addition, the support shaft 9 is arranged with its axial direction oriented in the vehicle width direction.

In the electric motorcycle according to the present embodiment, a vehicle body cover 10 forms a low foot rest portion 11 at a portion corresponding to the horizontal portions of the front and rear pipes 6 and 7. Foot rest part 1
The vehicle body cover 10 constituting 1 is a footboard 12 which is disposed above the horizontal portions of the front and rear pipes 6 and 7 and which has a substantially horizontal footrest surface, and a front pipe 6 on the front side of the footboard 12. A leg shield 13 standing upright along with an inner fender 14 connected to the lower side of these members.
And so on.

The leg shield 13 has a substantially rectangular opening in front of the footrest portion 11, and the battery 15 is mounted in the opening in front of the leg shield 13. The battery box 16 of is stored. The leg shield 13
As shown in FIGS. 3 and 5, the opening 1 has a cover 1
3a is mounted, and is normally configured so that the battery 15 and the battery box 16 are not exposed.

A seat 19 is supported on the inclined portion of the rear pipe 7 via brackets 17 and 18, and a controller 20 for controlling the power unit is also supported and fixed.

The power unit 8 has almost the same structure as the unit swing type engine used in the conventional motorcycle except for the difference in the structure of the engine and the electric motor, and the rear wheel 21 is rotatable. Supporting transmission case 8a
And an electric motor 8b and a V-belt type automatic transmission 8c which are mounted in the transmission case 8a.

The electric motor 8b is positioned approximately at the center in the vehicle width direction, and the rotating shaft that supports the rotor thereof is of the 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 15 via the controller 20. The controller 20 determines the amount of current supplied from the battery 15 to the electric motor 8b by the throttle grip 3 of the handle 3.
It is configured to control according to the operation amount at a.
That is, the rotation speed of the electric motor 8b is changed by operating the throttle grip 3a.

The front portion of the transmission case 8a is pivotally supported on the frame 1 by the support shaft 9, and the transmission case 8a
A rear cushion unit 22 is interposed between the rear pipe 7 and a portion of the electric motor 8b on the rear side of the vehicle body in the central portion in the vehicle width direction.

The battery box 16 is integrally formed of synthetic resin, and as shown in FIG. 5, a pair of left and right battery storage portions 16 formed in a box shape having one opening.
It has a structure in which a is connected to each other via a plate-like connecting portion 16b. Also, inside the left and right battery storage parts 16a,
Each partition is divided into two chambers by a partition plate 16d formed with a notch 16c for passing a battery cable (not shown) connecting the upper and lower batteries 15.

The battery box 16 is
As shown in FIG. 3, the front pipe 6 is inserted into the opening of the leg shield 13 so as to face the front pipe 6 from the front (from the bottom side of the battery storage portion 16a) between the left and right battery storage portions 16a, and the front frame It is fixed at 6.

As shown in FIG. 3, the fixing structure of the battery box 16 is such that the plate-like connecting portion 16b is bolted to the front pipe 6 by a mounting bolt 16e penetrating the plate-like connecting portion 16b, and the front pipe 6 is The bottom portion of the battery housing portion 16a is bolted to the battery box bracket 6a welded to the above. The cover 13a that closes the opening of the leg shield 13
Is attached to the leg shield 1 by the mounting bolt 16e.
Fixed to 3.

That is, when the battery box 16 is used, two batteries 15 can be mounted on one side of the front pipe 6 in the vertical direction, and four batteries can be mounted in the horizontal direction.

A member indicated by reference numeral 23 in FIG. 3 is a battery band for preventing the battery 15 from deviating from the battery housing portion 16a. The battery band 23 is bridged vertically in the opening of the battery storage portion 16a, and is screwed to brackets 16f formed on both upper and lower sides of the battery storage portion 16a.

A front portion of the seat 19 is pivotally supported by the bracket 17, and as shown by a chain double-dashed line in FIG. It is designed to open the space. As shown in FIG. 4, the storage space is formed by surrounding the seat lower space by the vehicle body cover 10, and a charger 24 for charging the battery 15 is stored inside the storage space.

The charger 24 is configured to charge the battery 15 by changing the AC 100V power source to DC 12V, and is supported and fixed to the rear pipe 7 via a bracket 25, as shown in FIG.

A charging socket, which is connected to a charging cord (not shown), is provided at the charging port 24a as an input portion of the charger 24. As a charging cord,
A plug 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. To connect the charging cord to the charging port 24a, the seat 19 is erected to open the storage space below the seat, and the charging cord is introduced into the storage space.

Further, the bracket 25 for supporting the charger 24 is provided so as to span the left and right rear pipes 7, and the rear cushion unit 2 is provided at the central position in the vehicle width direction.
A rear cushion unit bracket 25a that pivotally supports the upper end of 2 is welded. In FIG. 4, reference numeral 19a denotes a load receiver fixed to the back surface of the seat 19, and the load receiver 19a is made of rubber and is configured to come into contact with a support plate 18a provided at the upper end of the seat supporting bracket 18. There is.

1 and 2, reference numeral 26 is a carrier for loading luggage, and this carrier 26 is formed in a L shape in a side view by a plurality of rods as shown in FIG. 6, and is a rear pipe of the frame 1. Mounting bracket 2 at the rear end of 7
It is attached via 6a.

Further, a handle 26b for holding the vehicle body by a center stand (not shown) and a long object indicated by a chain double-dashed line in FIG. 6 are loaded on the front portion of the carrier 26. Support plate 26c for supporting the long object
And are welded.

As described above, when the carrier 26 formed in an L shape in side view is mounted, a long object can be loaded in an upright state as described above, and a relatively large load, a spare battery, a generator, etc. can be loaded. Can also be loaded.

In the electric motorcycle constructed as described above, when the throttle grip 3a is operated to rotate the rotary shaft of the electric motor 8b, the rotational force is transmitted to the rear wheel 21 via the V-belt type automatic transmission 8c. Will come to run.

To charge the battery 15, the seat 19 is erected to open the storage space under the seat, and in that state, the charging cord is connected to the charging socket through the charging port 24a.

Further, the battery 15 in the battery box 16 is attached and detached by opening the cover 13a of the leg shield 13 and removing the battery band 23. At this time, the battery 15 is taken in and out of the battery box 16 from the footrest section 11 side.

Therefore, in the electric motorcycle constructed as described above, the battery 15, which is a heavy object, is located on the front wheel 2 side with respect to the longitudinal center of the vehicle body, and the power unit 8 is located on the rear wheel 21 side. Front wheel 2
The weight of the vehicle body is substantially evenly distributed to the rear wheels 21. Also,
The battery 15 will be mounted on a part other than the footrest part.

The electric motorcycle according to the present invention is not limited to the structure of the above embodiment, and a luggage storage box is provided at the footrest portion between the leg shield and the seat as shown in FIGS. It can also be configured to be mounted.

FIG. 7 is a side view showing another electric motorcycle, and FIG.
Is a plan view, FIG. 9 is a sectional view taken along line IX-IX in FIG.
10 is a sectional view taken along line XX in FIG. 7, FIG. 11 is a sectional view taken along line XI-XI of the seat portion in FIG. 7, and FIG. 12 is a perspective view showing a storage box used in the electric motorcycle of this embodiment. In these figures, the same or equivalent members as those described in FIGS. 1 to 6 are designated by the same reference numerals, and detailed description thereof will be omitted.

7 to 12, reference numeral 31 is a luggage storage box, and the storage box 31 is placed and fixed on the horizontal portions of the front pipe 6 and the rear pipe 7. Further, as shown in FIG. 12, the storage box 31 is integrally formed of a synthetic resin in a box shape that opens to the left side of the vehicle body. Notch 31a
Are formed. In the figure, 32 is a storage box 31.
Shows the helmet stored in.

The storage box 31 is shown in FIG.
As shown in FIG. 3, the front plate 6 and the rear pipe 7 are supported via the support plate 31b protruding on the bottom surface and the rubber bush 33, and the bracket 31c protruding on the front and rear parts is attached to the frame. Frame 1 by bolting to the storage box brackets 1a, 1b
It is fixed to.

Further, the left opening of the storage box 31 is constructed so as to be closed by a lid 35 which constitutes a part of a vehicle body cover 34 which covers the vehicle body.

As shown in FIG. 10, a vehicle body cover 34 used in the electric motorcycle of this embodiment includes a top cover 34a having a structure for covering an upper half portion from a front portion to a rear portion of the vehicle body, and left and right side plates of the top cover 34a. It is composed of left and right footboards 34b connected to the lower side of the portion, and an inner fender 34c located between the left and right footboards 34b, 34b and below the storage box 31.

The portion of the top cover 34a that corresponds to the battery box 16 is the storage box 3.
It is formed so as to bulge laterally from the portion corresponding to 1 (from the left and right side plate portions), and that portion constitutes a leg shield. The bulging portion is designated by reference numeral 3 in FIG.
4d.

The lid 35 is arranged at a portion of the top cover 34a corresponding to the opening of the storage box 34, and is constructed so that it can be opened and closed by bringing the upper portion of the lid 35 into contact with and away from the vehicle body. Has been done. A lock device 37 having a structure in which a lock lever 36 engages with the storage box 34 is mounted on the lid 35. A seal member 37 is interposed between the top cover 34a and the opening edge of the storage box 31 to prevent rainwater and the like from entering.

The footboard 34b is fixed to the rear pipe 7 via a mounting bracket 38, and is formed with a substantially horizontal footrest portion projecting laterally from the left and right side plate portions of the top cover 34a. Note that, in FIG. 8, the portion indicated by the chain double-dashed line A indicates the foot of the occupant.

The inner fender 34c is shown in FIG.
As shown in, the portions of the front pipe 6 and the rear pipe 7 that are opposed to the horizontal portions are curved upward from both left and right side portions. When the inner fender 34c is configured in this manner, the traveling wind passage 39 that guides traveling wind to the power unit 8 is formed below the frame 1. The traveling wind is indicated by arrow B in FIG.

The seat 19 is the rear pipe 7 in this embodiment.
Brackets 17 and 18 and under-seat storage box 4
0, and the rear portion is a storage box 40 under the seat.
The under-seat storage box 40 is pivotally supported to open and close.

The charger 24 is mounted behind the under-seat storage box 40. The charging port 24 a of the charger 24 is located below the seat 19. Reference numeral 41 represents a seat locking device.

As described above, in the electric motorcycle having the storage box 31, the battery 15 can be attached / detached by opening the lid 35 and removing the battery band 23. For example, when removing the battery 15, first
The lid 35 is opened to open the luggage storage portion of the storage box 31. Next, the battery band 23 is removed to store the battery 15 in the notch 31a on the front side of the storage box 31.
Through and once pulled out into the storage box 31. And
Take out from the opening on the left side of the vehicle body of the storage box 31.

With this construction, in addition to the same effect as that of the above embodiment, a relatively large luggage storage space for storing a helmet or the like can be obtained in the vicinity of the central portion in the longitudinal direction of the vehicle body.

[0047]

As described above, in the electric motorcycle according to the present invention, the power unit including the electric motor, the power transmission device for driving the rear wheels, and the rear wheels is pivotally supported and attached to the frame below the seat. In front of the leg shield, a plurality of batteries for supplying electric power to the electric motor are installed along the frame, so that the battery, which is a heavy load, is positioned on the front wheel side with respect to the front-rear direction center of the vehicle body, and the unit swing electric motor is installed on the rear wheel side. Since the vehicle is positioned, the weight of the vehicle body is substantially evenly distributed to the front wheels and the rear wheels. In addition, the battery will be mounted on a part other than the footrest part.

Therefore, the footrest portion can be positioned at a low position while preventing the weight distribution between the front and rear wheels from being offset.

[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.

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

FIG. 5 is a perspective view showing a battery box portion.

FIG. 6 is a perspective view showing a luggage carrier used for the electric motorcycle according to the present invention.

FIG. 7 is a side view showing another electric motorcycle.

FIG. 8 is a plan view showing another electric motorcycle.

9 is a sectional view taken along line IX-IX in FIG.

10 is a sectional view taken along line XX in FIG.

11 is a cross-sectional view taken along the line XI-XI of the seat portion in FIG.

FIG. 12 is a perspective view showing a storage box used for an electric motorcycle.

[Explanation of symbols]

 1 frame 5 head pipe 8 power unit 9 spindle 13 leg shield 15 battery 16 battery box

Claims (1)

[Claims] 1. A frame, which is bent downward between a head pipe and a seat, has a low-floor foot rest on the bottom of the bent portion, and the frame and head pipe are covered with a leg shield. In a scooter type motorcycle, a power unit including an electric motor, a power transmission device for driving rear wheels and a rear wheel is pivotally mounted on the frame below the seat, and power is supplied to the electric motor in front of the leg shield. An electric motorcycle that is equipped with multiple batteries along the frame.