JPS63315380A - Fuel tank fixture for motorcycle, etc. - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an automatic 2.3-wheeled military vehicle with a fuel tank and seat located on an underbone type frame. In recent years, along with energy-saving measures, economical small 2.3-wheel automatic vehicles that require less fuel consumption and less maintenance, so-called soft bikes, have been in the spotlight, and various models are being developed. The small automatic 2.3 wheel army is an underbone type 7
Many vehicles have a structure in which the fuel tank, oil tank, or electrical components are located under the seat.

However, in this structure, the seat is located high above the fuel tank, which may make it difficult for female drivers to ride.

The present invention was made based on these circumstances, and
The purpose of this is that even if the seat is placed above the fuel tank, the seat height will not become high.
The purpose of the present invention is to provide a two-wheeled motor vehicle that can reduce the weight of the frame without reducing the strength of the frame.

The present invention will be explained below based on an embodiment shown in the drawings.

Figure 1 shows a scooter type automatic two-wheeled table, 1 is a frame,
2 is a bottom link type 70-ton 7-stalk, 3 is a steering wheel,
4 is a handle. The seven frames 1 are of an underpone type, and one down tube 6 is welded to the lower rear surface of the head pipe 5. The rear end side of the down tube 6 is horizontally curved, and a pair of left and right back stays 8.8 extending rearward via a set 7.7 are welded to both side surfaces of this end a. Backstay 8
．． The rear side of 8 is raised diagonally upward toward the rear to form a rising part 9.9, and the upper end of these rising parts 9.9 extends rearward approximately horizontally to form a pair of left and right parts. Seat rail 10.10. A leg shield 11 is fixed to the head pipe 5 and the down tube 6, and a leg shield 11 is attached to the front end of the backstay 8.8 via footrest brackets 12.12 and 13.13. A footrest board 14 is fixed in the @ position.

Additionally, a fuel tank 15 is located between the seat rails 10 and 10.
is located. The fuel tank 15 has two whistle stations on the front and rear sides of the fuel tank 16 located 1ffl above the rising section 9.9.
Reinforcement 17.17 welded to the outer peripheral surface of S and bracket 18 welded to the seat rail 10.10.
The tank cap 20 is fixed to the upper part of the tank 18 by tightening bolts, and the fuel inlet 19 on the upper surface thereof is covered with a tank cap 20. An oil tank 2 is located in front of the fuel tank 15.
1 are arranged side by side, and an oil tank cap 22 is placed over an oil filler port (not shown) on the upper surface of the oil tank 21. Further, a bridle 23 is installed between the brackets 18 and 18. This bridge 23 extends above the fuel tank 15. A pair of load receivers spaced apart from each other and straddled after J include a portion 24.24, and side wall portions 25.25 on both sides of the portion 24.24 are connected to the bracket via through bolts 26.26 and sockets 27.27. 18. It is fixed to the outside surface of 18. Further, a cross member 28g and a U-shaped cross tube 28 are horizontally suspended between the upper parts of the rising parts 5] and 9, and this cross tube 28 extends toward the upper part of the assisting member. It surrounds the oil tank 21.

Further, two engine brackets 29 are welded to the rear surface of the intermediate portion of the rising portion 9.9, and these engine brackets 29.29 have a swing link 30.30.
(only one shown) are pivoted. A movable crab knit 32 is rotatably suspended between these swing links 30 and 30 via a pivot pongee 31. moving crab knit 3
2 is composed of a two-stroke engine 33 and a transmission case 35 that integrally extends rearward from the left side of the crankcase 34 of this engine 33, and this transmission case 35 also serves as a swing arm, and its rear end 1 is not shown in the figure. A drive wheel 36 that is rotatably driven by a V-belt is supported in a cantilever manner. Note that a carburetor and an intake silencer (not shown) are arranged above the crankcase 34! 1, and a silencer 3 is located on the right side of the crankcase 34.
7 is placed.

Incidentally, the outer peripheries of the fuel tank 15, oil tank 21, and cross tube 28 are covered with an upper cover 38 made of synthetic resin. The upper cover 38 has a substantially cylindrical shape with 1M openings on the upper and lower surfaces, and the upper sides of the fuel tank 15 and the oil tank 21 protrude from the three upper openings.

Collars 40.40 attached to the outer circumferences of the through bolts 26.26 are inserted into both left and right side surfaces of the upper cover 38. A front cover 41 covers the space between the lower front surface of the upper cover 38 and the rear portion Am of the footrest board 14, that is, the front side of the rising portion 9.9. This curved cover 41 has a locking piece 4 provided at its lower edge.
2.42 is hooked on the rear edge of the footrest board 14, and the upper side is supported by the support stay 43 led out from the member 28a via the screw 44. It is attached removably. Further, both sides of the moving crab knit 32 are covered by a pair of side covers 45 and 45 that can be divided into left and right sides. The front edges of these side covers 45, 45 are continuous with both side edges of the curved cover 41, and approximately the front half of the upper edge is continuous with both lower edges of the upper cover 38, and at this lower edge, The rear halves each extend inwardly to abut each other and cover the upper rear side of the seat rail 10.10. Further, the lower edge portions of the side covers 45, 45 extend rearward along the extension line of the footrest board 14, and the rear side thereof is raised diagonally upward.

And on the rear part of these side covers 45.45,
A lamp unit 46 is embedded in which seven left and right rough shear lamps and a tail lamp are integrally assembled.

Such a front cover 41 and side cover 45.
The part covered by 45 forms an engine room 47 that is separated from the outside and communicates with the inside of the upper cover 38. Therefore, the engine unit 32 and the carburetor are housed in this engine room 47. It is something.

Further, a seat 48 is arranged above the fuel tank 15 and the oil tank 21. This seat 48 has a synthetic resin seat bottom 49 whose periphery extends downward.
The front end of the seat bottom 49 is constructed by stacking cushion material 50 on the upper surface and covering the cushion material 50 with seat leather 51.
It is attached to the extending end of the cross tube 28 through the
has been done. Therefore, the seat 50 is pivotally supported so that it can be opened and closed such that the rear end thereof rotates upward with the +ifl end as a pivot point. A pair of suckers 153... are attached to two places on the lower surface of the seat bottom 49 after the protrusion, respectively, and when the seat 48 is held open, these @ plates 53... 24. It is adapted to be adsorbed to the upper surface of 24 so that it can come into contact with and separate from it. Reference numeral 54 denotes a carrier provided at the rear of the seat 48, and a mounting piece 56.56 provided at the front end of the main front end section 55 is attached to the seat bracket 18.18 via the through bolt 26.26. They are fastened together.

Thus, the upper surfaces of the fuel tank 15 and the oil tank 21 are integrally covered with a flexible rubber sheet 57. This rubber sheet 57 has outlet ports 58 and 59 on its upper surface for leading out the fuel inlet 19 of the fuel tank 15 and the oil filler port of the oil tank 21, and the periphery of the outlet port 58 on the side of the fuel inlet 19 is It is raised in a 7-run shape so as to be in close contact with the periphery of the fuel inlet 19, and the outer periphery of this raised portion 60 is connected to the tank cap 2.
In the event that a small amount of fuel overflows from the fuel injection port 19 or if a small amount of fuel escapes from the fuel injection port 19, it has four lower annular portions 61 that can store the overflowing fuel.

Further, the circumferential line of the rubber sheet 57 is lengthened by t toward the upper opening 39mgfM of the upper cover 38 to form a side wall g62. A flange portion 63 that covers the peripheral edge of the oil tank 39 on the rear side of the oil tank 21 is integrally molded. The rubber sheet 57 having such a configuration is suitable for the fuel tank 1.
5 and the oil tank 21, and by covering the tank cap 20 and oil cap 22 on the fuel inlet 19 leading out from the outlet 58, 59 on the upper surface. It is positioned and fixed so that a film can be deposited.

Incidentally, an opening 64.64 is provided on the upper surface of the rubber sheet 57, through which the load receiving portion 24.24 of the prism 23 is led out.

It should be noted that the 2.3-wheeled motor vehicle according to the present invention is not limited to the scooter type, but is a general 2.3-wheeled motor vehicle equipped with a normal footrest in place of the rest board. can be implemented in the same way.

In addition, in the above embodiment, the cover is a front cover, an upper cover,
Although the side cover has a three-part structure, various modifications may be made, such as integrally molding the upper cover on the upper edge of the side cover.

In the present invention described in detail above, a pair of left and right back stays are welded to the rear end of the down tube that connects to the rear surface of the lower part of the head pipe. automatic with 2.3
In the seven-bone type frame of the wheeled vehicle, the pre-shaped part of the wall outside the fuel tank [11] is fixed to the bracket provided on the seat rail, and the fuel tank is placed on the seat rail, and the seat is placed above the fuel tank. is arranged. According to this, the seat height can be lowered by inserting the lower part of the fuel tank between the left and right seat rails, and the fuel tank becomes a cross member between the left and right seat rails, increasing the strength of 7 frames. can be larger and reduce the use of dedicated crossmembers,
This has excellent effects such as being able to reduce the weight of the frame.

[Brief explanation of the drawing]

The drawings show an embodiment of the invention! @ Figure 1 is an overall side view, Figure 2 is an exploded perspective view showing the mounting structure of the frame and cover, Figure 3 is a side view partially sectional, and Figure 4 is the third
The sectional view taken along line IY-1'V in the figure, the tJSS diagram is a plan view under the seat, and FIG. 6 is a perspective view of the rubber sheet. 5... Head pipe, 6... Down tube, 8...
... Backstay, 9... Standing part, 10... Seat rail, 15... Fuel tank, 16... 7 Runway part, 18... Bracket, 48... Seat. Patent applicant Yamaha Motor Co., Ltd. Figure 4R

Claims (1)

[Claims] A pair of left and right backstays are welded to the rear end of the down tube that connects to the rear surface of the lower part of the head pipe, and this backstay has a rising part facing rearward at the upper part and a seat rail facing rearward approximately horizontally. In the underbone type frame, the flange portion of the outer wall of the fuel tank is fixed to a bracket provided on the seat rail, and the fuel tank is disposed between the seat rails, and a seat is disposed above the fuel tank. A fuel tank mounting device for motorcycles, etc., characterized by: