JPH06219359A - Car body frame structure of electric scooter - Google Patents

Abstract

PURPOSE:To provide a car body frame structure of a motor scooter to form the structure of a car body frame with high efficiency and load more batteries even by one with an excellent balance. CONSTITUTION:In a motor scooter 1 driven by means of a motor 26, serving as a power source, driven by a battery, a car body frame 2 formed such that upper and lower frames 6 and 7, 7 are arranged with a vertical distance therebetween is provided. Battery containing parts 36 and 38 are arranged between the upper frame 6 and the lower frames 7 and 7 and in the rear of the upper frame 6.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle body frame structure for an electric scooter, and more particularly to a vehicle body frame structure for an electric scooter that can accommodate a large number of batteries.

[0002]

2. Description of the Related Art In recent years, electric vehicles running on a battery-powered motor as a power source have been attracting attention because of their advantages such as low pollution, low noise, and ease of control. Is being considered.

The traveling performance of an electric vehicle, that is, the traveling distance, acceleration performance, maximum speed, etc. are greatly influenced by the capacity of the battery. At present, a small and large-capacity battery is under development, and the traveling performance of the electric vehicle. In order to upgrade, it is necessary to mount many large and bulky batteries to increase the capacity of the batteries.

[0004]

However, in a small vehicle such as a scooter, the battery storage space is limited due to the limitation of the size of the vehicle, the influence of maneuverability, etc., and the number of batteries that can be mounted is limited. Will end up.

Therefore, it is difficult to develop an electric scooter having high running performance, which has been an obstacle to the spread of small electric vehicles such as electric scooters.

The present invention has been made in view of the above circumstances, and provides a body frame structure for an electric scooter in which the structure of the body frame can be efficiently constructed and at least one battery can be mounted in a well-balanced manner. To aim.

[0007]

In order to solve the above-mentioned problems, the vehicle body frame structure for an electric scooter according to the present invention is driven by a battery-driven motor as a power source. In electric scooter to
It has a vehicle body frame in which an upper frame and a lower frame are provided at intervals in the vertical direction, and a battery storage portion for storing the battery is provided between the upper frame and the lower frame and at the rear of the upper frame. .

[0008]

According to the present invention having the above-mentioned structure, in an electric scooter which runs by using a battery-driven motor as a power source, the electric scooter has a vehicle body frame in which an upper frame and a lower frame are vertically spaced from each other. Since a battery storage portion for storing the battery is provided between the upper frame and the lower frame and behind the upper frame, many batteries can be mounted in a well-balanced manner.

[0009]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a left side view showing an example of an electric scooter to which the present invention is applied, and FIG. 2 is a plan view of the electric scooter. 3 is a perspective view of the central portion of the vehicle body frame.

1 and 2, the electric scooter 1 has a body frame 2, and the body frame 2 is
Two down tubes 4, 5 having different end positions as down frames extending obliquely downward from the head pipe 3.
And one upper frame 6 that extends substantially horizontally rearward from the lower end of the down tube 4, and a plurality of upper frames 6 that extend substantially horizontally rearwardly from the lower end of the down tube 5 and are spaced left and right, for example, a pair of left and right lower frames. 7, 7 and a pair of left and right rear frames 8 and 8 having front ends fixed to the lower frames 7 and 7 extending substantially vertically, bent in a dogleg shape in the middle thereof, and extending rearward and upward. Composed.

As shown in FIG. 3, the rear end of the upper frame 6 is connected to a member 9 mounted on the rear frames 8, 8. Upper frame 6, lower frame 7,7
Further, the member 9 is provided with a plurality of screw holes 12 for fixing two battery cases 10 and 11 for accommodating batteries (not shown) by fixing means such as screws.

1 and 2, the body frame 2
The vehicle body cover 13 covers the
Is constructed by assembling a plurality of cover elements. The cover element specifically includes a rear leg shield 14, a lower leg shield 15, a leg shield cover 16, a front leg shield 17, an upper frame cover 18, and a lower side cover 19.

A rear leg shield 14 is provided on the upper frame 6, and the rear leg shield 1 is provided.
A lower leg shield 15 is provided at the lower part of 4. Further, a leg shield cover 16 standing upward from the front end of the rear leg shield 14 is provided, and a front leg shield 17 is provided at the front part of the leg shield cover 16.

On the other hand, around the rear frames 8 and 8, an upper frame cover 18 which is integrally formed on the left and right sides or which is formed separately is provided so as to surround the upper portions of the rear frames 8 and 8. A lower side cover 19 is provided in the lower portion so as to be divided into right and left. A driving seat 20 is provided on the upper frame cover 18.

The head pipe 3 is located in the front leg shield 17, a front fork 21 is held by the head pipe 3, and a front wheel 22 is held at the lower end thereof. Reference numeral 23 is a traveling handle.

A swing unit 28 supporting an electric motor 26 and a rear wheel 27 is pivotally attached to a pivot shaft 25 of a bracket 24 provided at the lower center of the body frame 2 so as to be rotatable around the pivot shaft 25. The swing unit 28 is elastically supported by the rear frame 8 by a rear shock absorber 29.

The electric motor 26 has a motor drive shaft 30.
Is a direct drive system which is directly connected to the axle 31 of the rear wheel 27 (see, for example, Japanese Utility Model Laid-Open No. 62-182050).

As shown in FIG. 4, the battery cases 10 and 11 described above are composed of an upper battery case 10 and a lower battery case 11, respectively, and battery boxes 32 and 33 formed by bending a steel plate into a box shape. , And top plates 34 and 35 for closing the upper portions of the battery boxes 32 and 33. Top plate 35 of the lower battery case 11
Also serves as a footboard for riders to put their feet on while riding.

The inside of the upper battery case 10 serves as a battery storage portion 36, and the inside of the lower battery case 11 is divided by a partition plate 37 into, for example, four battery storage portions 3.
It is divided into eight.

Screw holes 40a and 40b such as screws 39a and 39b for fixing the top plates 34 and 35 to the battery boxes 32 and 33 are provided in the battery cases 10 and 11, respectively.
Then, a plurality of screw holes 42a, 42b such as screws 41a, 41b for fixing the battery cases 10, 11 to the vehicle body frame 2 are formed.

Next, the operation of this embodiment will be described.

In the electric scooter 1 to which the present invention is applied, the two battery cases 10 and 11 are fixed to the vehicle body frame 2 before the vehicle body frame 2 is covered with the vehicle body cover 13.

In the upper battery case 10, after the battery box 32 is fixed to the upper frame 6 and the member 9 with screws 41a or the like, the top plate 34 is fixed to the battery box 32 with screws 39a or the like.

On the other hand, in the lower battery case 11, the battery box 33 is fixed to the lower frames 7, 7 with screws 41b and the like, and the top plate 35 is fixed with screws 39b and the like.
After fixing to 3, the lower battery case 11 is fixed to the upper frame 6 with screws 44 or the like via the lower battery case mounting brackets 43, 43.

A battery (not shown) is inserted into the battery storage portion 36 of the upper battery case 10 from the front and stored. In addition, the battery storage portion 3 of the lower battery case 11
A battery (not shown) is inserted into the side 8 for storage. After accommodating the battery, the body frame 2 is covered with the body cover 13.

As shown in FIG. 1, the upper battery case 1
Since 0 is provided in the space below the driving seat 20,
The limited space of the electric scooter 1 can be effectively utilized. Further, since the body cover 13 covers the periphery, the appearance is not impaired. Further, since the battery can be taken out only by removing the rear leg shield 14 which is a part of the vehicle body cover 13, replacement work of the battery becomes easy.

FIG. 5 is a sectional view taken along line XX of FIG.

As shown in FIG. 5, the upper frame 6 and the two lower frames 7, 7 ensure a sufficient strength of the vehicle body frame 2, while the lower battery case 1 which is heavy is heavy.
Holds 1 securely. And the lower battery case 11
While the top plate 35 can be used as a footboard, the lower battery case 11 is covered by the vehicle body cover 13 so that the appearance is not impaired. Further, the battery can be taken out from the side only by removing the leg shield cover 16 and the lower leg shield 15 which are a part of the vehicle body cover 13, which facilitates the battery replacement work.

In the present invention, since the structure of the vehicle body frame 2 is efficiently constructed as described above and a large number of batteries can be mounted, the capacity of the battery is increased and the traveling performance such as the traveling distance of the electric scooter 1 is improved. improves.

Further, since the battery cases 10 and 11 can be removed individually, the battery cases 10 and 11 can be easily replaced even if the shape of the battery is changed in the future.

Furthermore, since the heavy batteries are concentratedly mounted on the lower center of the vehicle body frame 2, the center of gravity is lowered and the electric scooter 1 can be stably operated.

In the embodiment of the present invention, two down tubes are provided, but one down tube may be provided. Further, although an example in which a plurality of lower frames are provided at intervals on the left and right is shown, the battery case can be sufficiently held even if a panel frame or the like formed by pressing is used.

[0034]

As described above, according to the vehicle body frame structure of the electric scooter according to the present invention, in the electric scooter that travels by using the battery-driven motor as the power source, the upper frame and the lower frame are vertically moved. Since the vehicle body frame is provided with a space between the upper frame and the lower frame, and the battery housing portion for housing the battery is provided behind the upper frame and behind the upper frame, many batteries can be mounted in a well-balanced manner.

[Brief description of drawings]

FIG. 1 is a left side view showing an embodiment of an electric scooter according to the present invention.

FIG. 2 is a plan view showing an embodiment of the electric scooter according to the present invention.

FIG. 3 is a perspective view of a central portion of a vehicle body frame.

FIG. 4 is a perspective view showing a configuration in which a battery case is mounted on a vehicle body frame.

5 is a sectional view taken along line XX of FIG.

[Explanation of symbols]

 1 Electric Scooter 2 Body Frame 4, 5 Down Tube 6 Upper Frame 7 Lower Frame 8 Rear Frame 10 Upper Battery Case 11 Lower Battery Case 13 Body Cover 14 Rear Leg Shield 15 Lower Leg Shield 16 Leg Shield Cover 26 Electric Motor 32 Upper Battery Box 33 Lower Battery Box 34 Upper Battery Case Top Plate 35 Lower Battery Case Top Plate 36 Upper Battery Storage 38 Lower Battery Storage 43 Lower Battery Case Mounting Bracket

Claims (1)

[Claims] 1. An electric scooter that travels using a battery-driven motor as a power source, has a vehicle body frame in which an upper frame and a lower frame are vertically spaced from each other, and the upper frame and the lower frame are provided. A vehicle body frame structure for an electric scooter, characterized in that a battery storage portion for storing the battery is provided between and in the rear of the upper frame.