JPH0569871A - Scooter type vehicle - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a scooter type vehicle that prevents overheating of a fuel tank, reduces the weight of the vehicle, and does not deteriorate refueling workability. [Structure] A scooter type in which a low-floor footrest is provided between a steering handle and a driving seat, and a rear-wheel drive engine positioned behind the footrest and at least the front and front of the rear wheels are covered with a rear cover. In the vehicle, a wall surface that rises from the footrest toward the lower surface of the front portion of the driver's seat is formed in a substantially tunnel shape so that the center in the vehicle body width direction is high, and a fuel tank is arranged inside the tunnel. A cover plate that can be opened and closed is provided in the tunnel, and the fuel filler port of the fuel tank is made to face the inside of the cover while being offset in any of the vehicle body width directions.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a scooter type vehicle in which the fuel tank can be refueled easily.

[0002]

2. Description of the Related Art There are two-wheel or three-wheel scooters provided with a low-floor, substantially plate-shaped footrest between a steering wheel and a driving seat. In a conventional scooter of this type, at least an upper part of an engine and a rear wheel are usually covered with a rear cover, a fuel tank is arranged in an upper part of the rear cover, and an operation seat is arranged above the fuel tank. However, there is a problem in that the heat of the engine is likely to be trapped in the upper portion of the rear cover and the fuel tank is heated.

Further, if the fuel tank is arranged so as to face the bottom plate of the driver's seat in this manner, not only is the vehicle center of gravity high, especially when the tank is filled with fuel, which is not desirable, and the seat position is often also increased. There is also an inconvenience that the height of the driver becomes high and the ability of the driver to get on the road deteriorates. Therefore, it is possible to provide a fuel tank on the footrest,
In this case, there is a problem that the refueling port becomes low and the refueling workability deteriorates.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and provides a scooter type vehicle capable of preventing overheating of a fuel tank, lowering the body weight of the vehicle, and not deteriorating refueling workability. With the goal.

[0005]

According to the present invention, an object of the present invention is to provide a low-floor footrest between a steering handle and a driver's seat, and a rear wheel drive engine and rear wheels located behind the footrest. In a scooter type vehicle in which at least an upper part and a front part are covered with a rear cover, a wall surface rising from the footrest toward a lower surface of a front portion of a driver's seat is formed in a substantially tunnel shape so that a center of a vehicle body in a width direction becomes higher. A fuel tank is disposed inside the fuel tank, a lid plate that can be opened and closed is provided in the tunnel, and a fuel filler port of the fuel tank is offset inside the lid to face in the vehicle width direction. It is achieved by a scooter type vehicle.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a side view of a two-wheel scooter which is an embodiment of the present invention, and FIG. In these figures, reference numeral 10 is a frame. This frame 1
Reference numeral 0 includes a steering shaft tube 12, a down tube 14, and a pair of left and right side tubes 16 (16a, 16b) extending obliquely rearward and upward from the lower end of the down tube 14. A steering front wheel 18 and a steering handle 20 are attached to the steering shaft rotatably held in the steering shaft cylinder 12 in the left and right directions.

A power unit 22 is a forced air-cooled two-cycle upright type rear-wheel drive engine 24 and a transmission case 26, which are integrally assembled and viewed from a side surface (FIG. 1) and a plane surface (FIG. 2). It is formed in a substantially L shape. That is, the engine 24 is located in front of the rear wheel 28 attached to the rear wheel of the transmission case 26, and the cantilevered crankshaft 3 is placed horizontally.
0 and a piston 32 that tilts slightly backward and moves vertically. An intake air purifier 34 is attached to the side of the engine 24 opposite to the transmission case 26. In the intake air purifier 34, first and second chambers 38 are provided on the left and right by a filter 36.
a and 38b are defined, and the first chamber 38a has a second chamber 38b.
A carburetor 40 is arranged so as to communicate between the crankcase and the crank chamber. As a result, the intake port 42 formed in the first chamber 38a
The intake air that has entered the first chamber 38a from the filter 36, the second
It is sucked into the crank chamber through the chamber 38b, the carburetor 40, and a reed valve (not shown).

A front end of the power unit 22 is vertically swingably connected to the side tube 16, and a rear portion thereof is elastically supported by a buffer unit 44. The side tube 16 extends to a height near the upper edge of the rear wheel 28, and above the side tube 16, a battery 46 and a lubricating oil tank 4 are provided.
8. A small case 50 is provided.

Reference numeral 52 denotes a low-floor, substantially plate-shaped footrest, which is formed so as to cover the lower end of the down tube 14 and the front part of the side tube 16. 54 is a rear cover,
The power unit 22 and the rear wheel 28 are connected to the footrest 52.
It is made to cover the upper part of the
6, an oil tank 48 and a small container 50 are located.
An operating seat 56 is attached to the upper portion of the rear cover 54 so as to be openable and closable. Here, the wall rising from the rear part of the footrest 52 toward the lower surface of the front part of the driving seat 56 is formed in a substantially tunnel shape so that the center in the vehicle body width direction becomes higher.

Reference numeral 58 denotes a fuel tank, which has a side surface substantially L so that it can be inserted from the inside of the footrest 52 to the inside of the rear cover 54.
It is shaped like a letter. That is, the portion 58 inside the footrest 52
a is a substantially horizontal plate shape, and the portion 5 in the rear cover 54
8b rises upward along the side tube 16. A fuel filler port 58c is formed at an upper portion of the inner portion 58b of the rear cover 54 and is directed obliquely upward and forward. A cap 60 is attached to the fuel filler port 58c. Foot stand 5 of fuel tank 58
An electromagnetic fuel pump 62 is attached to the bottom surface of the second inner portion 58. The fuel pump 62 sends the fuel in the tank 58 to the carburetor 40. Further, in the tunnel-type cover that rises from the rear portion of the footrest 52 toward the lower surface of the front portion of the driving seat 56, a portion facing the cap 60 is a lid plate 64 that can be opened and closed. The fuel filler port 58c to which the cap 60 is attached is deviated to the right side from the center in the vehicle body width direction as shown in FIG. Refueling is this cover plate 64
Open and remove the cap 60.

According to this embodiment, the heat of the engine 24 does not easily accumulate near the inner portion 58b of the rear cover 54 of the fuel tank 58, so that the tank 58 will not be overheated and the amount of fuel evaporation will not increase. Further, the tank 58 is formed into an L-shape not only in the tunnel-shaped portion of the rear cover 54 but also largely swelled in the footrest 52.
It is possible to significantly increase the capacity of 8. Further, even when the tank 58 is filled with fuel, the fuel tank 58 is located at a sufficiently low position so that the weight of the vehicle becomes low and the running stability becomes good.

Further, since the inner portion 58b of the rear cover 54 is erected upward, the refueling port 58c provided at the upper part of the rear cover 54 is also raised, and refueling can be performed in a comfortable posture without significantly bending the body at the time of refueling, resulting in good workability. .. In particular, since the fuel filler port 58c is offset to the right from the center of the vehicle body width direction, workability when refueling from the right side of the vehicle body is improved. Refueling port 58 here
Since c faces the inner side of the cover plate 64, the opening direction of the fuel filler port 58c can be freely set. That is, the rear cover 54
The opening direction of the fuel filler port 58c can be set regardless of the inclination of the surface of the. Therefore, refueling workability can be further improved.
Further, unlike the case where the capacity of the fuel tank facing the seat bottom plate is increased, the seat does not become taller even if the capacity of the fuel tank is increased.

FIG. 3 is a side view of a portion of another embodiment.
In this embodiment, the fuel tank 58 in the embodiment of FIGS. 1 and 2 is divided into two. That is, the fuel tank 70 of this embodiment is divided into the inner portion 70a of the footrest 52 and the inner portion 70b of the rear cover 54.
70b is connected by the pipes 72 and 72. Further, 70c is a fuel filler port. According to this embodiment, the tank 7
Since 0 can be divided into a plurality of parts and arranged, the degree of freedom in arrangement is increased, and the longitudinal movement of fuel during acceleration / deceleration can be suppressed without providing partition walls in the respective portions 70a and 70b. In FIG. 3, the same parts as those in FIG. 1 are designated by the same reference numerals, and the description thereof will not be repeated. Although each of the above embodiments is a two-wheel scooter, the present invention can be applied to a scooter having three or more wheels.

[0014]

As described above, according to the present invention, the wall rising from the footrest toward the lower surface of the front part of the driver's seat is formed in a substantially tunnel shape so that the center in the vehicle width direction becomes higher. Since the fuel tank is provided, the fuel is not overheated by the heat of the engine accumulated in the upper portion of the rear cover, and the weight of the vehicle can be reduced. The fuel filler port is located inside the cover plate provided in this tunnel-shaped part at a position offset to the one side from the center in the vehicle width direction. Especially, the opening direction of the fuel filler port is restricted to the shape of the tunnel-shaped part. It can be set in a direction that makes it easy to refuel without having to do so, and workability during refueling is good.

[Brief description of drawings]

FIG. 1 is a side view of a two-wheel scooter that is an embodiment of the present invention.

FIG. 2 is a plan view with a part thereof omitted.

[Explanation of symbols]

 20 Steering Handle 24 Engine 28 Rear Wheel 52 Footrest 54 Rear Cover 56 Operating Seat 58, 70 Fuel Tank 58c, 70c Refueling Port 64 Cover Plate

[Procedure amendment]

[Submission date] July 28, 1992

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be corrected] Figure 3

[Correction method] Added

[Correction content]

FIG. 3 is a side view of a portion of another embodiment.

Claims (1)

[Claims] 1. A low-floor footrest is provided between a steering handle and a driver's seat, and a rear cover covers at least an upper portion and a front portion of a rear-wheel drive engine and a rear wheel located behind the footrest. In a scooter type vehicle, a wall surface that rises from the footrest toward the lower surface of the front part of the driving seat is formed in a substantially tunnel shape so that the center in the vehicle body width direction becomes high, and a fuel tank is arranged inside the tunnel. A scooter type vehicle characterized in that a cover plate that can be opened and closed is provided in this tunnel, and a fuel filler port of the fuel tank is made to face the inside of the cover by being displaced in any of the vehicle body width directions.