JPH057234B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a three-wheeled motor vehicle in which a person is seated astride a driver's seat connected to the rear of a fuel tank, and travels on rough terrain while largely shifting his/her weight from the driver's seat to the top of the fuel tank. be.

There is a tricycle that has a fuel tank attached to the rear of the steering shaft cylinder and a driver's seat attached to the rear so as to be connected to the fuel tank. In this type of vehicle, when driving on rough terrain, the vehicle must violently shift its weight back and forth and left and right to maintain its balance. On the other hand, when installing a rear fender that crosses from side to side under the seat,
Since it is difficult to manufacture the rear fender and the fuel tank integrally, they have been formed separately. For this reason, a gap or a connection level difference inevitably occurs between the two, and when the weight shifts, clothing may get caught in the gap or the level difference, making it difficult to shift the weight. Therefore, it is conceivable to cover the entire fuel tank with the rear fender, but in this case, it becomes necessary to attach and detach the entire rear fender when refueling the fuel tank, resulting in a problem of poor workability.

The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide a tricycle that can smoothly shift weight without getting clothes caught on the vehicle body even during intense weight shifts. Another object of the present invention is to provide a tricycle which allows easy refueling without the need for attaching and detaching the rear fender, and which prevents the rear fender from being deformed by the load of the driver's seat.

In order to achieve this objective, the present invention forms a fuel tank cover that completely covers the fuel tank from above and is integral with the rear fender, thereby eliminating gaps and steps where clothes can be caught, and also uses the fuel tank itself as a fixing member for the rear fender. This makes it possible to firmly fix the rear fender without impairing the ease of attaching and removing the rear fender. That is, according to the present invention, this purpose is to connect a fuel tank located behind the steering shaft cylinder, a driver's seat attached to the fuel tank, and a pair of rear wheels that traverse left and right below the driver's seat. In the vehicle having a rear fender extending upward, a tank cover that covers the entire fuel tank from above is formed integrally with the rear fender and is fixed to the vehicle body frame, and a fuel filler port of the fuel tank is connected to the tank cover. This is achieved by a three-wheeled motor vehicle, characterized in that the bottom plate of the driver's seat is removably held on the vehicle body frame through an opening provided in the rear fender. The present invention will be explained in detail below based on the illustrated embodiments.

Figure 1 is a side view of one embodiment of the present invention, Figure 2 is a plan view, Figure 3 is an enlarged side sectional view of a part thereof, and Figures 4, 5, and 6 are Figures 1, 3, and 4, respectively. of-
FIG. In these figures, numeral 10 is a steering shaft cylinder, 12 is a main pipe, and a pair of left and right seat rails 14, 14a, 14b are fixed to the rear end of this main pipe 12, and these and other frame members form a frame. is formed. A steering handle 16, a front fork 18, and a front wheel 20 with ultra-low pressure wide tires are attached to the steering shaft cylinder 10 so as to be rotatable left and right. 22 in Figure 1
24 is an engine, 24 is a final reduction gear case, 26 is a connecting tube that rigidly connects the engine 22 and this case 24, and an axle 28 is supported by a support case (not shown) that is integrated with the final reduction gear case 24. has been done. A pair of left and right rear wheels 30, 30a, and 30b with ultra-low pressure wide tires are attached to the axle 28. These engine 22, case 24, connecting tube 26, axle 28, and wheels 30 are assembled in advance (subassembly) separately from the frame, and this assembly is attached to the frame from below.

34 is a fuel tank made of synthetic resin, and is attached to the rear of the steering shaft cylinder 10 so as to straddle the main pipe 12. At the front end of this tank 34, as shown in FIGS. 3, 4, and 6, a pair of vertically long ribs 36, 36a,
36b is provided in a protruding manner, and a tongue portion 38 extending rearward substantially horizontally is formed at the rear end. A pipe 42 is horizontally fixed to the front lower part of the main pipe 12 by brackets 40, 40a, 40b.
There are two cushioning materials 44, 44 on both ends of 2, respectively.
a, 44b, 46, 46a, and 46b are retained. The ribs 3 of the tank 34 are attached to the outer cushioning material 46.
6 is fitted and held. Further, the rear end of the tank 34 is bolted together with a rear fender 50, which will be described later, near the rear end opening of the main pipe 12. Note that 48 in FIG. 3 is a buffer material interposed between the tank 34 and the main pipe 12.

50 is a rear fender. The rear fender 50 is integrally formed of synthetic resin so as to cover the left and right rear wheels 30, the seat rail 14, and the fuel tank 34 from above. The front end of the tank cover 51 that completely covers the fuel tank 34 from above wraps around the ribs 36 of the fuel tank 34 inward.
Engagement notches 52, 52a, 5 which are open at the bottom are provided here.
2b is formed (Figures 3 and 4). Notch 5
2 is aligned with the buffer material 44 inside the rib 36 from above, and is coupled to the buffer material 44 by pushing the tank cover 51 downward. The fuel filler port of the fuel tank 34 passes through the tank cover 51, and a cap is attached to the filler port from above the tank cover 51 (see FIGS. 3 and 4).

At the rear of the rear fender 50 is a bracket 5 that spans between the left and right seat rails 14a and 14b.
4 (Figures 3 and 5). A substantially inverted trapezoidal recess 56 is formed at the overlapping portion of the rear fender 50 and the bracket 54.

The vicinity of the center of the rear fender 50 is bolted together with the tongue portion 38 of the fuel tank 34 to the main pipe 12, as shown in FIG.

Reference numeral 60 denotes a vertically long straddle type driver's seat, the front part of which rises along the curved surface of the cover 51 so as to be smoothly connected to the tank cover 51. A hook portion 62 shown in FIG. 3 is protruded from the bottom plate near the center. The hook portion 62 faces the opening at the rear end of the main pipe 12 from the opening 50a provided in the rear fender 50, and by pressing the entire seat 60 against the tank cover 51 side, the tip of the hook portion 62 faces the main pipe 1.
It engages with the inner edge of the opening of No. 2.

A pair of left and right protrusions 64, 64a, and 64b that engage in the recess 56 are protruded from the rear portion of the bottom plate of the seat 60. A pin 66 is hung between both convex portions 64a and 64b (FIGS. 3 and 5). Recess 5
From the bottom of 6, connect bracket 54 to bracket 68.
A hook 70 is held so as to be able to swing back and forth through the
through the opening provided in the rear fender 50 and into the recess 5.
6 , and the tip of this hook 70 engages with the pin 66 . In Figure 5, 72 connects the hook 70 to the pin 66.
A torsion spring 74 biasing the hook 70 into engagement is a lever that swings the hook 70.

Therefore, the sheet 60 connects the hook portion 62 to the main pipe 1.
2 and the convex portion 64 is engaged with the concave portion 56, the pin 66 engages with the hook 70 and is fixed in the state shown in FIGS. 1 and 3. Also, if the lever 74 is rotated counterclockwise as shown in FIGS.
The seat 60 can be removed.

As described above, in the present invention, since the tank cover that covers the fuel tank from above is integrally formed on the rear fender, there are no gaps or steps near the fuel tank that would trap clothing when shifting weight, and You can move smoothly. In addition, the fuel tank's filler port passes through the tank cover so that fuel can be directly supplied from the outside of the tank cover to the filler port, so there is no need to remove the entire rear fender when refueling, making refueling work easier. Further, since the driver's seat is removably attached to the vehicle body frame through the opening provided in the rear fender, the driver's seat can be firmly fixed to the vehicle body frame. Therefore, even if a large load is applied to the driver's seat, the rear fender is unlikely to deform.

[Brief explanation of the drawing]

Fig. 1 is a side view of one embodiment of the present invention, Fig. 2 is a plan view, Fig. 3 is an enlarged side sectional view of a part thereof, and Figs. 4, 5, and 6 are Figs. of-
FIG. 10... Steering shaft cylinder, 34... Fuel tank, 50
...Rear fender, 51 ...Tank cover, 30
……Rear wheel.

Claims (1)

[Claims] 1. It has a fuel tank located behind the steering shaft cylinder, a driver's seat attached to the fuel tank, and a rear fender that crosses from side to side below the driver's seat and extends above the pair of rear wheels. In the vehicle, a tank cover that covers the entire fuel tank from above is formed integrally with the rear fender and fixed to the vehicle body frame, and a fuel filler port of the fuel tank is passed through the tank cover, and a bottom plate of the driver's seat is attached to the bottom plate of the driver's seat. A tricycle characterized in that the tricycle is detachably held on the body frame through an opening provided in the rear fender.