JPH0630629Y2 - Scooter type vehicle - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Industrial Field of the Invention The present invention relates to a scooter type vehicle having a low floor portion in front of a seat.

2. Description of the Related Art For example, in a scooter type motorcycle, a steering portion at a front portion of a vehicle body and a seat portion at a rear portion are connected by a step-through type frame having a substantially U-shape to form a low floor portion in front of the seat, and For ease of use. Below the seat, a swing type power unit to which an engine is attached is provided so that its front end is pivotally supported by the frame and can swing up and down, and a rear wheel is supported at the rear end of the power unit. The fuel tank is mounted above the engine and below the seat, and the engine and the fuel tank are covered with a rear body cover that surrounds the bottom of the seat together with other adjacent members. In such a conventional scooter type motorcycle, since the fuel tank is provided in the upper portion of the vehicle body, the weight of the vehicle tends to increase when the vehicle is full.

Therefore, in the low floor type vehicle disclosed in Japanese Utility Model Laid-Open No. 55-146390, a closed box-like space is provided in the substantial center of the floor, and a fuel tank is housed in the space. Has been done.

However, since this fuel tank is located only in the center of the floor in the vehicle width direction, the height of the fuel tank must be increased in order to secure a sufficient tank capacity. Therefore, there is a disadvantage that a high convex portion is formed in the central portion of the floor portion, the open space in front of the seat is narrowed, and the weight of the vehicle is increased.

Therefore, the present invention provides a scooter type vehicle having a fuel tank device capable of increasing the capacity of a fuel tank provided in the lower portion of the floor portion, lowering the center of gravity of the vehicle body, and increasing the open space of the floor portion. The purpose is.

Therefore, in the present invention, in the present invention, in the scooter type vehicle having a low floor portion in front of the seat, the space formed below the center lower portion and both left and right end portions of the floor panel of the floor portion. A fuel tank is provided in the fuel tank, and the fuel tank is provided with a fuel injection portion extending above the floor panel, and a space is provided above the floor panel around the fuel injection portion and between the fuel injection portion and the fuel injection portion. Are covered with external members that are spaced apart to form the.

According to the present invention, since the space under the floor is widely used as a fuel tank installation place from the central part to the left and right sides, it is possible to increase the capacity of the fuel tank without protruding it to the upper part of the floor. The center of gravity of the vehicle body can be lowered, and the open space above the floor can be enlarged.

Further, since the fuel injection part extending upward from the floor is covered with the external appearance member and a space is formed between the external appearance member and the fuel injection part, the fuel injection part is sufficiently protected against external force. can do.

Further, the space can be effectively used as an article storage space.

Embodiment Hereinafter, the present invention will be described with reference to an illustrated embodiment. FIG. 1 is an overall side view of a starter type motorcycle according to the present invention. The front portion of the vehicle body is a steering portion 4 in which a front wheel 1 is suspended at a lower portion, and the upper handle 2 steers the front wheel 1 via a front fork 3. The steering portion 4 has a substantially U-shaped side surface. A step-through type frame 5 that extends to the rear extends backward, and a seat 6 is attached to the upper rear end of the frame 5. In the present embodiment, the frame 5 is a press frame formed by pressing a steel plate, and the front portion and the rear portion are covered by the vehicle body cover 7. Due to the above-mentioned shape of the frame 5, a low floor portion 8 is formed in front of the seat 6, and the front portion of the seat has a low and wide scooped shape. A swing type power unit 9 is covered with the vehicle body cover 7 in FIG. 1 and is not shown, but an engine is mounted on the upper front side thereof. The front end of the power unit 9 is swingably supported on the lower rear end of the frame 5, and the rear wheel 10 is rotatably mounted on the rear end of the frame 5 and is driven by the engine. The rear part of the power unit 9 is connected to the upper rear part of the frame 5 via a cushion unit 11.

In this embodiment, as shown in FIGS. 2 and 3, a fuel tank 12 is mounted below the floor portion 8. In the floor portion 8, the frame 5 extends longitudinally along the center line of the vehicle body, and the floor panels 13 project from the lower left and right sides of the frame 5. Floor panel 13 is frame 5
May be attached to the frame 5 by welding, bolts, or the like, or may be integrally formed with the frame 5. Fuel tank 12
The peripheral portion is attached to a floor panel 13 by bolts 14 and is suspended below the floor panel 13, and the lower portion of the floor portion 8 projects from the central portion in the vehicle body direction to the left and right sides. The lower part is covered with an under cover 15. At the center of the upper surface of the fuel tank 12, a fuel injection pipe 16 which constitutes a fuel injection portion for the tank is provided so as to project upward. The fuel injection pipe 16 penetrates the frame 5 and extends above the frame 5, and is made of a tubular body having a relatively large diameter. The fuel injection pipe 16 itself can store a substantial amount of fuel therein. it can. Frame 5 is fuel injection pipe 16
As shown in FIGS. 2 and 3, a space surrounded by the appearance member is formed around the fuel injection pipe 16 so that an external force directly acts on the fuel injection pipe 16. Has been blocked. A hole through which the fuel injection pipe 16 of the frame 5 penetrates is reinforced by a reinforcing pipe 17. An opening at the upper end of the fuel injection pipe 16 is closed by a fuel cap 18 so as to be openable and closable, and a lid 19 covers the upper part thereof. As shown in FIG. 2, the lid 19 is pivotally attached at its rear end to the frame 5 via a pivot 20 and can be opened and closed vertically around the pivot 20. In the closed position, the locking member 21 attaches to the frame 5. It can be locked.

A fuel pump 22 is arranged behind the fuel tank 12,
The fuel in the fuel tank 12 is supplied to the engine by the fuel pump 22. The fuel take-out pipe 23 that connects the inside of the fuel tank 12 and the fuel pump 22 has an inner end 23a located at the bottom of the fuel tank 12, extends upward from the inner end, penetrates the upper surface of the fuel tank 12, and goes out of the tank. After that, it is bent in a U shape and the outer end is connected to the suction port of the fuel pump 22 through a pipe joint 24.
Therefore, the fuel in the fuel tank 12 can be fully utilized to the bottom, and if the liquid level in the fuel tank 12 is lower than the height of the pipe joint 24, the fuel in the tank can be removed even if the pipe joint 24 is removed. It does not spill outside through the fuel outlet pipe 23. Therefore, fuel tank 12 and fuel pump for maintenance
When disconnecting from 22 it is not necessary to completely empty the fuel tank 12 and thus also to provide a drain port at the bottom of the fuel tank 12.

In the present embodiment, the fuel tank 12 is provided below the floor portion 8 from the central portion to both the left and right sides, so that the tank capacity is large and therefore the vehicle body weight is also lowered. Since the upper end of the fuel injection pipe 16 only extends to the upper part of the floor portion 8, a wide open space is secured above the floor portion, and the fuel injection into the fuel tank 12 is made low and wide. Since it is performed from the floor portion 8 that is easily accessible, the fuel injection work is easy and the injection time is shortened. Moreover, since a considerable amount of fuel can be stored in the fuel injection pipe 16, this increases the capacity of the fuel tank. The fuel stored in the fuel injection pipe 16 is replenished to the space formed at the corner of the fuel tank 12 when the fuel is injected in a tilted state of the vehicle when the vehicle is later upright. Can also be That is, when fuel is injected into the fuel tank 12 in an inclined state, a space R where the fuel is not replenished at the corner due to the liquid level L occurs as shown in FIG. 3, but the fuel is left with this space R remaining. Further fuel can be added in the injection pipe 16. The fuel in the fuel injection pipe 16 flows into the fuel tank 12 when the vehicle body is upright, and the space R
To fill the fuel tank 12 with a full portion. Therefore, the fuel tank 12 does not need a bleeder pipe for venting air. Reference numeral 26 is a communication hole provided in a portion of the fuel injection pipe 16 projecting into the fuel tank 12 in order to smoothly perform the above operation.

In the above embodiment, the frame 5 is a press frame made of a pressed steel plate or the like, but the present invention may be applied to a scooter type motorcycle having a pipe frame made of steel pipe. FIG. 4 shows such an embodiment. In the figure, 27 is a pipe frame, which extends through the floor portion in the longitudinal direction. The pipe frame 27 is at least a fuel injection pipe
In the vicinity of 16, it is better to divide it into two parts on the left and right as shown in the figure. A floor panel 13 similar to that of the above embodiment is attached to the pipe frame 27, and a fuel tank 12 is attached to the floor panel 13. Fuel injection pipe 16
Extends upward through the space between the left and right pipe frames 27, 27 and covers the pipe frames 27, 27.
A lid 19 is attached to the (appearance member) so as to be openable and closable.

In each of the illustrated embodiments, the fuel injection pipe 16 is formed to have a large diameter up to the upper end thereof, but the upper end may be made small in diameter to facilitate insertion and guidance of the fuel injection device. It goes without saying that various modifications can be made within.

Effects of the Invention As described above, in the present invention, a large-capacity fuel tank is arranged below the floor portion to lower the body weight of the vehicle and prevent the fuel tank from protruding above the floor portion to provide a wide open space. Can be secured. Further, the fuel injection portion extending upward from the floor can be sufficiently protected, and the space around the fuel injection portion can be effectively used as an article storage space.

[Brief description of drawings]

FIG. 1 is an overall side view of a scooter type motorcycle, FIG. 2 is an enlarged side view of a floor portion of the motorcycle in a partial cross section, and FIG. 3 is a side view taken along line III-III of FIG. The drawing is similar to FIG. 3 showing another embodiment. 1 ... front wheel, 2 ... steering wheel, 3 ... front fork, 4 ... steering portion, 5 ... frame, 6 ...
Seat, 7 ... Body cover, 8 ... Floor part, 9 ... Power unit, 10 ... Rear wheel, 11 ... Cushion unit, 12 ... Fuel tank, 13 ... Floor panel, 14 ... Bolt, 15 ... … Fuel injection pipe, 16… Undercover, 17…
… Reinforcement pipe, 18 …… Fuel cap, 19 …… Lid, 20 ……
Axis, 21 ... Locking member, 22 ... Fuel pump, 23 ... Fuel extraction pipe, 24 ... Bolt, 25 ... Discharge pipe, 26 ... Communication hole,
27 …… Pipe frame, 28 …… Cover.

Claims (1)

[Scope of utility model registration request] 1. A scooter type vehicle having a low floor portion in front of a seat, wherein a fuel tank is arranged in a space formed below a central lower portion and both left and right end portions of a floor panel of the floor portion, and the fuel tank is provided. Is provided with a fuel injection portion extending above the floor panel, and the fuel injection portion is covered above the floor panel with outer appearance members spaced apart so as to form a space between the fuel injection portion and the fuel injection portion. A scooter type vehicle characterized by