JPH04358981A - Battery setup structure scooter type electric-motor two wheeler - Google Patents

Abstract

PURPOSE:To set up a battery without any hindrance in relation to other vehicle constituent parts even if this battery is formed into a large-sized one as well as to keep the extent of steerability and appearance so well, in a scooter type electric-motor two wheeler. CONSTITUTION:In the case where a body frame 2 of a scooter type electric- motor two wheeler 1 is made up into an underbone form, and a footrest floor 39 is installed at the upper side of its horizontal part frame 5, a battery 40 is installed along a lower surface side of this footrest floor 39, In addition, a breadth size B of the battery 40 is formed almost equal to a breadth size A of the footrest floor 39.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a battery arrangement structure for a traveling drive motor mounted on a scooter type electric two-wheeled vehicle.

0002

2. Description of the Related Art Scooter-type motorcycles are well known, but recently it has been planned to make them electric, and in this case, a battery is used as a power source for the electric motor driving the vehicle.

0003

However, if an electric two-wheeled vehicle is to achieve sufficient running speed and distance, it is required to increase the capacity of the battery. However, increasing the capacity of the battery requires a correspondingly larger battery, so firstly, in a narrow two-wheeled vehicle with limited body space, the placement of this battery is difficult in relation to other vehicle components. It's not easy. Secondly, depending on how the battery is arranged, the seat height may become high. Furthermore,
Thirdly, the presence of the battery in the vehicle may become too large and the appearance of the two-wheeled vehicle may deteriorate.

0004

[Object of the Invention] The present invention has been made with attention to the above-mentioned circumstances, and it is possible to arrange the battery without any problem in relation to other vehicle components, even if the battery is made large. Further, the purpose is to keep the seat height low and maintain the good appearance of the vehicle body.

[0005]

[Means for Solving the Problems] The present invention is characterized in that a battery is provided along the lower side of the underbone-shaped footrest floor, and the battery is connected to a horizontal portion of the vehicle body frame. The footrest floor is supported by a frame, and the width of the footrest floor in the vehicle width direction is approximately the same as the width of the battery.

[0006]

[Operation] The operation of the above configuration is as follows. When the body frame 2 of the scooter type electric two-wheeled vehicle 1 has an underbone shape and a footrest floor 39 is provided above the horizontal frame 5, a battery 40 is provided along the lower surface side of the footrest floor 39, This battery 40 is supported by the horizontal frame 5. By the way, the footrest floor 39 has a large area in plan view due to its function. Therefore, even if the battery 40 is large, it can be easily disposed along the lower surface side of the footrest floor 39.

Furthermore, as described above, the footrest floor 39 has a large area in plan view. Therefore, if the space on the lower surface side of the footrest floor 39 is effectively used to dispose the battery 40, even if the battery 40 is large, it can be made vertically flat.

Furthermore, as described above, the battery 40 can be made flat vertically, and as described above, the width dimensions A and B of the footrest floor 39 and the battery 40 are almost the same, so that the battery 40 is flat when viewed from above. It is almost covered by the footrest floor 39. Therefore, the presence of the battery 40 in the vehicle is prevented from becoming too large in appearance.

[0009]

Embodiments Hereinafter, embodiments of the present invention will be explained with reference to the drawings. In FIGS. 1 to 5, reference numeral 1 indicates a scooter-type electric two-wheeled vehicle, and an arrow Fr in the figures indicates the front thereof. The body frame 2 of the electric two-wheeled vehicle 1 has an underbone shape, and includes a head pipe 3 located at the front end thereof, and a front frame 4 extending rearward and downward from the head pipe 3. , a horizontal frame 5 extending rearward from the rear end of the front frame 4 substantially horizontally; and a rear part extending rearward and upward from the rear end of the horizontal frame 5 and then extending rearward substantially horizontally. frame 6
These are integrally molded from a resin material.

A steering shaft 8 is supported on the head pipe 3 so as to be freely steerable, and a steering knuckle 9 is attached to the lower end of the steering shaft 8. At the lower end of this steering knuckle 9, there are links 10 connected to each other.
A front wheel 12 is supported via a shock absorber 11 and a shock absorber 11 . Further, a handle 13 is attached to the upper end of the steering shaft 8. 17 is a power unit, this power unit 1
Reference numeral 7 is composed of an AC travel drive electric motor 20 and a power transmission device 21, and a casing 23 of the electric motor 20 is attached to the front left side of a transmission case 22 of the power transmission device 21.

On the other hand, a bracket 25 made of sheet metal is screwed to the lower surface of the rear frame 6 midway in the front and rear directions with bolts 26. Support pieces 27, 27 protruding from the front part of the transmission case 22 and the upper surface of the casing 23 are pivoted to the bracket 25 by a pivot shaft 28. The rear part of the case 22 is vertically swingable. In addition, the above transmission case 2
The rear part of the transmission case 2 is supported by a shock absorber 29 at the rear part of the rear frame 6, and a rear wheel 30 is supported on the rear left side of the transmission case 22. The power of the electric motor 20 is transmitted to the rear wheels 30 by a belt transmission means (not shown) provided in the transmission case 22, allowing the electric two-wheeled vehicle 1 to travel. Also, at this time, the vehicle body is on the road surface 31.
The shock received from the shock absorbers 11 and 29 is absorbed by the shock absorbers 11 and 29. Further, 32 is a rear fender, which is integrally formed on the lower surface of the rear frame 6 and prevents mud etc. thrown up by the rear wheels 30 from heading toward the electric motor 20.

A storage box 33 is provided on the rear frame 6. This storage box 33 is also integrally molded with the rear frame 6 using a resin material, thereby suppressing an increase in the number of parts. This storage box 33 has an opening 34 at its upper part, and a sheet 35 is supported on the storage box 33. The front end of the seat 35 is pivoted to the upper front end of the storage box 33 by a pivot pin 36, and the seat 35 is pivoted around the pivot pin 36.
The rear part of 5 is said to be able to move up and down. If the seat 35 is rotated downward as shown in the figure, the rider can sit on it, while if it is rotated upward, the opening 34 is opened and items such as helmets can be stored in the storage box 33. It becomes possible to put in and take out. Further, when the seat 35 is rotated downward as described above, the opening 34 is closed by the seat 35, and in this state, there is a locking means that can lock the seat 35 to the storage box 33 side. 37 are provided.

A sheet 35 is placed on the horizontal frame 5.
A footrest floor 39 is provided on which a rider seated can place his or her feet. This footrest floor 3
A battery 40 is provided along the lower surface side of the battery 9, and this battery 40 is composed of four units 40a. The battery 40 serves as a power source for the electric motor 20 and is supported by the horizontal frame 5. Further, a controller 38 is attached to the rear end of the rear frame 6, and the controller 38 adjusts the current supplied from the battery 40 to the electric motor 20 to control the rotational speed of the electric motor 20 and the like. In the above case, the horizontal frame 5 has a wide and flat main body 41, and the upper surface of this main body 41 serves as the footrest floor 39. Further, a pair of front and rear recesses 42 are formed in each side of the main body portion 41, respectively. The openings 43 of each of these recesses 42 are opened toward each side of the main body 41, and
These are closed by a cover plate 44 made of resin so that they can be opened and closed. Each unit 40a is inserted into and removed from each recess 42, and at this time, between each unit 40a and the inner surface of each recess 42, a heat insulating layer made of styrofoam is provided.
A buffer material 45 is interposed in each case.

The width dimension B of the battery 40 is slightly smaller than the width dimension A of the footrest floor 39 in the vehicle width direction, but is approximately the same. In the above case, the footrest floor 39 has a large area in plan view due to its function. Therefore, even if the battery 40 is large, it can be easily disposed along the lower surface of the footrest floor 39.

Furthermore, as mentioned above, since the footrest floor 39 has a large area in plan view, in this embodiment, the battery 40 is disposed by effectively utilizing the space on the lower surface side of the footrest floor 39. , large battery 4
0 is flattened. Furthermore, since the width dimension B of the battery 40 is approximately the same as the width dimension A of the footrest floor 39 in the vehicle width direction, and the battery 40 is prevented from protruding outward in the vehicle width direction, the bank angle It is also suppressed from narrowing.

Furthermore, in the above case, the horizontal frame 5 of the vehicle body frame 2 has a box-shaped cross section, and therefore has a structure with sufficient strength. On the other hand, ribs 46 are formed on each side of the front frame 4 and the rear frame 6, thereby improving strength. In this way, a vehicle body frame 2 that is overall light and highly rigid is obtained. Furthermore, by integrating the storage box 33 into the rear frame 6 as described above, the strength of the vehicle body frame 2 is also improved.

In particular, as shown in FIG.
A pair of left and right grooves 47, 47 extending back and forth are formed on the lower surface of the holder, and these grooves 47 can be expanded elastically. A wire harness 48 is removably fitted into each groove 47, and this wire harness 48 is connected to the electric motor 20.
The electrical components including the battery 40 and the battery 40 are connected to each other.

In FIG. 1, the footrest floor 3
A leg shield 49 is provided to cover the legs of the rider placed on the rider 9 from the front. Also, this leg shield 49
covers the head pipe 3, the front frame 4, and the steering shaft 8. 1 and 4, an undercover 50 is provided to cover the lower surface of the horizontal frame 5. As shown in FIGS. In FIG. 4, 51 is a water drain hole.

In FIGS. 1 and 2, the rear frame 6
A main stand 52 is provided on the lower surface of the front end. The main stand 52 is biased by a spring so that it can be selected between an upwardly rotating posture shown by solid lines in the figure and a downwardly rotating posture shown by phantom lines. and,
If the electric two-wheeled vehicle 1 is placed in the upward rotational position, it is possible to run the electric two-wheeled vehicle 1, and if the electric two-wheeled vehicle 1 is placed in the downward rotational position, the electric two-wheeled vehicle 1 can be maintained in an independent state.

FIG. 6 shows another embodiment of the horizontal frame 5. In FIG. According to this, the horizontal part frame 5
It is composed of a wide, flat, box-shaped main body 55, and a cover plate 57 that is detachably screwed onto the upper surface of the main body 55 with bolts 56. Then, the main body portion 55
A recess 42 is formed in the upper surface of the recess 42, and an opening 4 of the recess 42 is formed.
3 is opened upward, and this opening 43 is closed by the cover plate 57. Further, the undercover 50 is detachably screwed to the lower surface of the main body portion 55 by bolts 58. In this case, each side edge of the bolt 58 extends upward along the side surface of the main body portion 55 and fits into a groove 59 formed in the side edge of the cover plate 57. Since the other configurations and functions are the same as those of the previous embodiment, the same reference numerals are used in the drawings and the explanation thereof will be omitted.

FIG. 7 shows yet another embodiment. According to this, the vehicle body frame 2 in the embodiment described above is composed of a pair of left and right metal pipe frames 61, and the storage box 33 is separately supported by these pipe frames 61. In addition, the centers of the pivot shaft 28, the electric motor 20, and the rear wheel 30 are arranged approximately on the virtual straight line 62 when viewed from the side, thereby making the pipe frame 61 lower than the conventional pipe frame 61'. be. According to this embodiment, the seat 35 is lowered to the extent that the pipe frame 61 is lowered, so that the front projected area in the riding state is reduced, and running resistance is reduced. In addition, in this case, sheet 35
If the storage box 33 is not lowered, the capacity of the storage box 33 can be increased accordingly. Further, although not shown, a storage box is welded to the horizontal frame 5 constituting the vehicle body frame 2, and a battery 40 is housed in this storage box. in this case,
The storage box is supported between the left and right pipe frames 61, is thin enough to have sufficient rigidity, and is made sufficiently close to the power unit 17. Since the other configurations and functions are the same as those of the previous embodiment, the same reference numerals are given to the drawings and the explanation thereof will be omitted.

[0022]

According to the present invention, when the body frame of a scooter-type electric two-wheeled vehicle has an underbone shape and a footrest floor is provided on the upper side of the horizontal frame, the battery is disposed along the lower surface of the footrest floor. In this case, the footrest floor has a large area in plan view due to its function, so even if the battery is large, it is placed on the bottom side of the footrest floor. easily located along the line. That is, the battery can be installed without any problems in relation to other vehicle components.

Furthermore, as mentioned above, the footrest floor has a large area when viewed from above, so if the space on the bottom side of the footrest floor is effectively utilized and the battery is placed, even if the battery is large, This can be made vertically flat, which firstly prevents the ground clearance from becoming narrower. Secondly, the center of gravity of the vehicle body can be lowered due to its flatness. Furthermore, thirdly, the footrest floor is prevented from becoming high, and therefore the height of the seat is also prevented from becoming high.

Further, as described above, the battery can be made flat vertically, and as described above, the width dimensions of the footrest floor and the battery are almost the same, so that the battery is almost covered by the footrest floor when viewed from above. It happens. Therefore, the presence of the battery in the vehicle is prevented from becoming too large in appearance, and the electric two-wheeled vehicle maintains a good appearance.

[Brief explanation of drawings]

FIG. 1 is an overall side view.

FIG. 2 is an overall plan view.

FIG. 3 is a sectional view taken along line 3-3 in FIG. 1;

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

FIG. 5 is a sectional view taken along line 5-5 in FIG. 1;

FIG. 6 is a diagram showing another embodiment and corresponding to FIG. 4;

FIG. 7 is a diagram showing still another embodiment and corresponding to a part of FIG. 1;

[Explanation of symbols]

1 Electric motorcycle 2 Vehicle body frame 3 Head pipe 5 Horizontal frame 20 Electric motor 39 Footrest floor 40 Battery

Claims (1)

[Claims] [Claim 1] An underbone-shaped vehicle body frame that extends rearward and downward from the head pipe, extends rearward substantially horizontally, and further extends rearward and upwardly, and the vehicle body frame extends substantially horizontally. In a scooter-type electric two-wheeled vehicle, a footrest floor is provided on the upper side of the horizontal part frame, and on the other hand, the battery is provided along the lower side of the footrest floor, and the battery is connected to the horizontal part frame. A battery arrangement structure for a scooter type electric two-wheeled vehicle in which the width of the battery is approximately the same as the width of the footrest floor in the vehicle width direction.