JP2001310783A - Fuel tank arrangement structure for scooter type motorcycle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fuel tank arrangement structure for a scooter type motorcycle that can increase the degree of freedom of the shape and dimensions of a fuel tank and thus increase the capacity of the fuel tank. SOLUTION: This scooter type motorcycle is so constructed that a portion under a seat 18 is covered with a body cover 24 of resin and that a fuel tank 26 is housed in the body cover 24. An arched handle standing 27 enclosing the rear portion of the seat 18 is attached to a seat rail frame (body frame) 10 via a bracket 31, so that the handle standing 27 and the seat rail frame 10 form a space opening to the body rear. The fuel tank 26 is arranged in the space. The formation the space opening to the body rear by the handle standing 27 and the seat rail frame 10, and the arrangement of the fuel tank 26 in the space can prevent an interference of the fuel tank 26 with another member and ensure high flexibility of the shape and dimensions of the fuel tank 26 to thereby increase the capacity of the fuel tank 26.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a fuel tank arrangement for a scooter type motorcycle.

[0002]

2. Description of the Related Art In a scooter type motorcycle, a portion below a seat is covered with a resin body cover, and a storage box, a fuel tank, and the like are housed in the body cover.
Also, around the seat outside the vehicle body cover, a handle standing for gripping and lifting the field tie when the rider puts on the stand during parking is attached.

[0003]

However, since the fuel tank must be disposed in the vehicle body cover so as to avoid interference with other members, the shape and size of the fuel tank are restricted, and the fuel tank is large and large. The capacity could not be secured.

Accordingly, an object of the present invention is to provide a fuel tank arrangement structure for a scooter-type motorcycle in which the degree of freedom in the shape and size of the fuel tank can be increased to increase the capacity of the fuel tank. It is in.

[0005] In many cases, the fuel supply port of the fuel tank is disposed below the seat, and it is necessary to open the seat for refueling. Therefore, there is a problem that the refueling operation is troublesome.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a fuel tank arrangement for a scooter-type motorcycle that can easily perform a refueling operation without opening a seat.

[0007]

In order to achieve the above object, a first aspect of the present invention is to provide a scooter type automatic vehicle in which a lower portion of a seat is covered with a resin body cover and a fuel tank is housed in the body cover. In a motorcycle, an arch-shaped handle standing surrounding the rear portion of the seat is attached to a vehicle body frame, a space that opens toward the rear of the vehicle body is formed by the handle standing and the vehicle body frame, and the fuel tank is disposed in the space. It is characterized by the following.

According to a second aspect of the present invention, in the first aspect of the invention, the fuel tank is integrally formed of resin.

According to a third aspect of the present invention, in the first or the second aspect of the present invention, a fuel supply port of the fuel tank is disposed behind the handle standing outside the vehicle body cover.

Therefore, according to the first aspect of the present invention, a space that opens toward the rear of the vehicle body is formed by the handle standing and the vehicle body frame, and the fuel tank is disposed in this space. A large degree of freedom can be ensured in the shape and dimensions of the fuel tank while avoiding interference with other members, thereby increasing the capacity of the fuel tank.

According to the second aspect of the present invention, since the fuel tank is integrally formed of resin, the shape of the fuel tank can be freely set, and the capacity of the fuel tank can be increased more effectively. it can.

According to the third aspect of the present invention, since the fuel supply port of the fuel tank is disposed behind the handle standing outside the vehicle body cover, the refueling operation can be easily performed without opening the seat.

[0013]

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

FIG. 1 is a side view of a scooter-type motorcycle having a headlight portion structure according to the present invention, FIG. 2 is a partial side view of a front cover of the scooter-type motorcycle, and FIG. FIG.

In the scooter type motorcycle 1 shown in FIG. 1, reference numeral 2 denotes a head pipe located at an upper front part of the vehicle body.
A steering shaft 3 is rotatably inserted into the head pipe 2. A steering wheel 4 is attached to an upper end of the steering shaft 3, and a front fork 5 is attached to a lower end of the steering shaft 3. A front wheel 6 is rotatably attached to a lower end of the front fork 5. It is pivoted. The upper portion of the front wheel 6 is covered by a movable front fender 7.

A round pipe-shaped down tube 8 extends obliquely downward toward the rear of the vehicle body from the head pipe 2 and is bent toward the rear of the vehicle body. A bracket 9 is attached to a bent portion of the down tube 8, and a pair of left and right round pipe-shaped seat rail frames 10 branch from the bracket 9 and extend diagonally upward toward the rear of the vehicle body. Have been.

Here, the head pipe 2 at the front of the vehicle body,
The down tube 8 and the like are covered with a resin front cover 11, and a resin inner pocket 12 having an upper opening is attached to a left portion of the leg shield portion of the front cover 11. That is, as shown in FIGS. 2 and 3, bosses 12 a are integrally provided at four corners of the inner pocket 12 toward the inside (front of the vehicle body), and correspond to the bosses 12 a of the front cover 11. A mounting seat 11a is formed at a position where the mounting is performed. A screw 13 that is inserted into each mounting seat 11a of the front cover 11 from the front of the vehicle body is screwed into the boss 12a formed in the inner pocket 12, whereby the inner pocket 12 is attached to the leg shield portion of the front cover 11, and Screw 1 on the surface of pocket 12
No 3 is exposed.

The handle 4 is covered with a handle 14 made of resin.
An opening 14a is formed at the center of the vehicle 4 in the vehicle width direction, and a headlight 15 housed in the handle cover 14 faces the opening 14a. And handle cover 1
A gap formed between the opening 14a of the fourth headlight 4 and the headlight 15 is closed by a plating cover 16, and flasher lamps 17 are arranged on the left and right of the headlight 15.

On the other hand, a seat 18 is provided behind the handle 4, and a low-floor footstep 19 is provided between the handle 4 and the seat 18. And
A unit swing type engine 20 as a power unit is provided below the seat 18.

The unit swing type engine 20 includes:
A four-stroke engine as a drive source and a transmission case including a V-belt type automatic transmission and a power transmission mechanism are integrally formed. The transmission case extends from one side of the engine (left side of the vehicle body) to the rear of the vehicle body, A rear wheel 21 is rotatably supported at the rear end. Although not shown, an exhaust pipe extending from the exhaust system of the engine extends toward the rear of the vehicle body on the right side of the vehicle body (the rear side in FIG. 1). The illustrated muffler is connected.

The unit swing type engine 20
Is swingably supported by an engine suspension bracket 22 fixed to the seat rail frame 10, and a rear end thereof is supported by the seat rail frame 10 via a rear cushion 23.

On the other hand, a portion of the vehicle body below the seat 18 is covered with a resin-made vehicle body cover 24. Inside the vehicle body cover 24, a resin-made storage box 25 having an open upper surface is formed. Fuel tanks 26 are stored in front and rear.

A handle standing 2 which is formed in an arch shape by a metal is provided at a rear portion of the vehicle body cover 24.
7 is attached so as to surround the rear portion of the seat 18, and a rear carrier 28 made of metal is attached to the rear thereof. A tail lamp 29 is mounted on the rear surface of the vehicle body cover 24 at the center in the vehicle width direction, and flasher lamps 30 are mounted on both left and right sides thereof.

Here, a fuel tank arrangement according to the present invention will be described with reference to FIGS. FIG. 4 is a side view of a rear part of a scooter type motorcycle showing a fuel tank arrangement according to the present invention, and FIG. 5 is a plan view of the same.

Between the rear ends of the pair of left and right seat rail frames 10 covered by the vehicle body cover 24, brackets 31 made of sheet metal are formed and welded. The left and right front and rear sides of the handle standing 27 are attached by bolts 32. The rear part of the seat 18 is provided with a bracket 31.
Supported by the upper surface of the

The handle standing 27 is made of an aluminum die-cast, and is formed so as to rise diagonally upward toward the rear of the vehicle body in a side view as shown in FIG. As shown in FIG. 5, a mounting boss 27a is integrally provided to protrude inward. Each mounting boss 27a is provided with a circular hole through which the bolt 32 is inserted.

A nut member 33 is welded to the front and rear inner surfaces of the left and right sides of the bracket 31, and a circular hole (not shown) is formed in a portion of the bracket 31 where the nut member 33 is welded. The screw hole of the nut member 33 faces the circular hole.

On the other hand, the rear carrier 28 has upper and lower metal pipes 28 formed in a substantially U-shape as shown in FIG.
a, 28b, each metal pipe 28a, 2
The left and right front ends of 8b are crushed to form a flat mounting portion.

The mounting bosses 27a protruding from the inner surfaces of the left and right mounting portions of the handle standing 27, respectively.
, Penetrates a hole (not shown) formed in the vehicle body cover 24 and faces the inside of the vehicle body cover 24, and its end surface contacts the left and right side surfaces of the bracket 31. In this state, each of the nut members 3 is welded to the bracket 31 with a bolt 32 inserted from the outside into the mounting boss 27a of the handle standing 27.
3 can be screwed into the screw holes of the bolts 3 as described above.
2 attaches to the bracket 31. That is, the handle standing 27 is supported by the pair of left and right seat rail frames 10 via the bracket 31. At this time, the flat mounting portions formed on the left and right front ends of the lower metal pipe 28b of the rear carrier 28 are fastened together with the handle standing 27 by bolts 32 and mounted on the bracket 31, and the upper metal pipe 28a The flat attachment portions formed at the left and right front ends are attached to the handle standing 27 by bolts 34.

By adopting the above mounting structure,
A space is formed at the rear of the vehicle body, which is open toward the rear of the vehicle body by the handle standing 27, the bracket 31, and the seat rail frame 10. The vehicle cover 24 in this space is formed.
The fuel tank 26 is disposed therein. Here, the fuel tank 26 is integrally formed of resin, but the fuel tank 26 has a complicated shape to avoid interference with each member housed in the vehicle body cover 24, and particularly has a front end. As shown in FIG. 5, the portion 26a is formed in a concave curved surface shape (U-shape in plan view) so that the left and right sides extend forward of the vehicle body along the outer shape of the rear portion of the seat 18.

Then, as shown in FIG.
An oil supply pipe 35 is provided on the upper surface of the rear part of the vehicle 6 at an angle obliquely upward toward the rear of the vehicle body, and an oil supply port (not shown) of the oil supply pipe 35 opens to the rear of the handle standing 27 outside the vehicle body cover 24. This filler cap has a cap 3
6 are applied.

According to the arrangement structure of the fuel tank 26 according to the present invention, a space that opens toward the rear of the vehicle body is formed by the handle standing 27 and the seat rail frame 10, and the fuel tank 26 is placed in this space. Since the fuel tank 26 is arranged, a great degree of freedom can be secured in the shape and dimensions of the fuel tank 26 while avoiding interference with other members of the fuel tank 26. As a result, the capacity of the fuel tank 26 can be increased. it can. Since the fuel tank 26 is integrally formed of resin, the shape of the fuel tank 26 can be freely set.
The front and left ends of the fuel tank 26
Can be more effectively achieved.

Further, since the fuel supply port of the fuel tank 26 is arranged behind the handle standing 27 outside the body cover 24, the cap 36 is removed without opening the seat 18 and the fuel is supplied from the fuel supply port to the fuel tank 26. This also has the effect of simplifying the refueling operation.

[0034]

As is apparent from the above description, according to the present invention, in the scooter type motorcycle in which the lower part of the seat is covered with a resin body cover and a fuel tank is stored in the body cover, Attach the arched handle standing around the rear of the seat to the body frame,
A space that opens toward the rear of the vehicle body is formed by the handle standing and the body frame, and the fuel tank is disposed in the space, so that interference with other members of the fuel tank is avoided to reduce the shape and size of the fuel tank. A large degree of freedom can be ensured, and this has the effect of increasing the capacity of the fuel tank.

Further, according to the present invention, since the fuel supply port of the fuel tank is disposed behind the handle standing outside the vehicle body cover, an effect that the fuel supply operation can be easily performed without opening the seat is obtained.

[Brief description of the drawings]

FIG. 1 is a side view of a scooter type motorcycle provided with a fuel tank arrangement according to the present invention.

FIG. 2 is a partial side view of a front cover of a scooter-type motorcycle including a fuel tank arrangement according to the present invention.

FIG. 3 is a view in the direction of arrow A in FIG. 2;

FIG. 4 is a side view of a rear part of a scooter type motorcycle showing a fuel tank arrangement structure according to the present invention.

FIG. 5 is a plan view of a rear part of a scooter type motorcycle showing a fuel tank arrangement structure according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Scooter type motorcycle 10 Seat rail frame (body frame) 18 Seat 24 Body cover 26 Fuel tank 27 Handle standing

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Zeng Qi Xin No.2, No. 3, Zhonghua Road, Taoyuan County, Taiwan Taoyuan County Taiwan Yamaha Machinery Co., Ltd. (Fun) Co., Ltd. (72) Inventor Wang Xing Western Taiwan Taoyuan County Zhonghua Road, 2nd tier, No. 3, Taiwan Yamaha Machinery Co., Ltd.

Claims (3)

[Claims] 1. A scooter-type motorcycle in which a lower portion of a seat is covered with a resin body cover and a fuel tank is housed in the body cover, an arch-shaped handle standing surrounding a rear portion of the seat is provided on the body frame. A fuel tank arrangement structure for a scooter-type motorcycle, wherein a space that is open toward the rear of the vehicle body is formed by mounting the handle standing and the vehicle body frame, and the fuel tank is disposed in the space. 2. A fuel tank arrangement structure for a scooter-type motorcycle according to claim 1, wherein said fuel tank is integrally formed of resin. 3. The fuel tank arrangement structure for a scooter-type motorcycle according to claim 1, wherein a fuel supply port of the fuel tank is arranged behind the handle standing outside the vehicle body cover.