JPH02158480A - Fuel feed port seal device for vehicle - Google Patents

Abstract

PURPOSE:To prevent entrance of fuel to the inner side of a car body cover by a method wherein, in a device in which a cylindrical oil feed port formed integrally with a fuel tank is caused to front on an opening formed in a car body cover, an oil resistant seal material located between the fuel tank and the car body cover is liquidtightly engaged with the oil feed port. CONSTITUTION:In a scooter type vehicle, a containing box 40 arranged below a driver's seat 84 and is secured to a car body frame 10 at a bottom part positioned closer to a front and the opening of a rear part. A car body cover 70 is situated in a manner to surround the surroundings of the containing box 40 therewith, and a fuel tank 58 is disposed in the car body cover. The fuel tank 58 has a cylindrical oil feed port 58a formed integrally therewith, and the oil feed port 58a is disposed in a manner to front on the lower front of the loading part of a load-carrying platform 68 through an opening formed in a flat part 72 of the car body cover 70. In this case, an oil resistant cylinder type seal material 76 is liquidtightly engaged with the surroundings of the oil feed port 58a, the lower end surface thereof is brought into contact with the fuel tank 58, and meanwhile an upper end surface is adhered to the under surface of the opening of the flat part 72 of the car body cover 70.

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention provides a fuel filler port integrated with a fuel tank that faces an opening formed in a vehicle body cover, and a fuel cap that is attached to and removed from the fuel filler port from the outside of the vehicle body cover. The present invention relates to a fuel filler opening sealing device for a vehicle.

(Background of the Invention) In vehicles such as passenger cars, a fuel filler port is usually provided integrally with the vehicle body, and the fuel filler port and a fuel tank are connected by a separate flexible tube. However, in this case, it is necessary to ensure a reasonably large distance between the fuel filler port and the fuel tank, so when applied to a small vehicle such as a scooter, there is a problem that the capacity of the fuel tank is reduced.

Therefore, in scooters and other vehicles, the fuel filler port integrated with the fuel tank is located below the driver's seat, or the fuel filler port faces an opening formed in the vehicle body cover, and the cap is attached and removed directly from the outside. It is considered. However, in this case, if fuel spills from the fuel filler port during refueling, the fuel will flow into the inside of the vehicle body cover, staining the inside of the luggage storage box and nearby parts, making cleaning difficult or impossible. was there.

Also, to prevent fuel spilled from the fuel filler port from flowing into the vehicle body cover, it is possible to seal between the area around the fuel filler port and the vehicle body cover, but it is recommended to use a molded product of rubber or resin as the sealing material. However, there arises a problem that it takes many man-hours to form and becomes expensive.

(Objective of the Invention) The present invention was made in view of the above circumstances, and is capable of preventing fuel from spilling inside the vehicle body without reducing the capacity of the fuel tank, and has a simple and inexpensive structure. Another object of the present invention is to provide a fuel filler sealing device for a vehicle.

(Structure of the Invention) According to the present invention, the object is to provide a vehicle in which a cylindrical fuel filler port integrated with the fuel tank faces an opening formed in the vehicle body cover, and a fuel cap is attached and removed from the outside of the fuel filler port.
A fuel tank for a vehicle, characterized in that a cylindrical sealing material made of oil-resistant resin is fluid-tightly fitted into the fuel filler opening, an end surface of the sealing material is brought into contact with the fuel tank, and the other end surface is brought into close contact with the inner surface of the vehicle body cover. This is achieved by a fuel filler sealing device.

(Embodiment) Fig. 1 is a side view of an embodiment of the present invention, Fig. 2 is a partially enlarged sectional view, Fig. 3 is a plan view of the vicinity of the storage box, and Fig. 4 is a rear view of the storage box. FIG. 5 is a sectional view of the vicinity of the fixed part, FIG. 5 is a plan view of the vicinity of the fuel cap, and FIG. 6 is a cross-sectional view of the vicinity of the fuel cap.
7 is a sectional view of the fuel cap.

In FIG. 1, the reference numeral 10 denotes a vehicle body frame, which includes a main tube 14 extending diagonally downward and rearward from the steering shaft cylinder 12, and a pair of left and right guide tubes 16 (see FIG. 4) whose front ends are fixed to the main tube 14. have The rear tube 16 is bent obliquely upward and rearward near the middle, and then extends rearward almost horizontally. There is a horizontal footrest 18 near the connection part with the front part of the lower main tube 14 and the handle tube 16.
is provided. A leg shield 20 that stands upward is formed at the front end of the footrest 18, and the steering shaft cylinder 12 is located within this leg shield 20. This steering shaft cylinder 12
holds a front fork 22, and a steering front wheel 2 is mounted at its lower end.
4 is retained. 26 is a steering handle.

Reference numeral 30 designates a dynamic crab knit, which includes a forced air-cooled two-stroke single-cylinder engine 32 and a transmission case 34 extending rearward from one side of the engine 32, with a driving rear wheel 36 held at the rear end of the transmission case 34. It is. The output of the engine 32 is transmitted to the rear wheels 36 via a belt continuously variable transmission housed within the transmission case 34. moving crab knit 3
0, the upper surface of the crankcase of the engine 32 is pivotally supported by the bracket 16a of the rear tube 16 via a link, while the rear end of the transmission case 34 is supported by the cushion unit 38.
It is elastically supported by

Reference numeral 40 denotes a luggage storage box, which is made of synthetic resin such as polypropylene to have sufficient strength. This storage box 40 is made so that a helmet 42 can be stored from above with the top facing down, and a storage area 44 for tools and the like is integrally molded on the inside of the bottom, and a battery storage area 46 is integrally molded on the outside of the bottom. (Figure 2). This storage box 40 is connected to the vehicle body frame 10 by its front bottom and rear opening edge.
is rigidly fixed to. That is, the front part of the storage box 40 comes into contact with a cross member 48 that spans the left and right rear tubes 16, and is screwed from inside the storage box 40 at two locations on the left and right. Furthermore, a substantially horizontal seat load receiving section 50 is integrally molded at the rear of the storage box 40, and below this load receiving section 50, a substantially gate-shaped tower 52 is welded to the rear tube 16 when viewed from the rear. The part 50 is fixed to the hoe 52 by two long bolts 56 and 56 with the seat lock 54 in between (
(See Figure 4).

58 is a fuel tank, and as shown in FIG.
It bulges out along the rear wall, which is arcuate in plan view, to increase its capacity. This tank 58 is made by joining a pair of front and rear halves made of sheet metal press, and its base 60 is made oblique as shown in Fig. 2 to increase the capacity of the bulging part at the front of the tank 58 while punching out the press die. is possible. The upper part of this pedestal 60 is fixed with two bolts to a mounting part 62 formed on the hoe 52, and the lower part of the pedestal 60 is fixed with two left and right bolts to a cross member 64 that connects the rear ends of the left and right rear tubes 16. ing.

66 is an upright plate fixed to the cross member 64. A bottom covering portion 68a of the loading platform 68 is fixed to the upper end of the upright plate 66. The left and right upper mounting portions 68b of the loading platform 68 are fastened together with the load receiving portion 50 of the storage box 40 by long bolts 56 and 56, as shown in FIG. This loading platform 68
As shown in Figure 5, the is made by welding metal rods, and the member that crosses near the center in the longitudinal direction has its center part protruding upwards as shown in Figure 6, and this is where the driver stands. It becomes a grip part 68c on which the hand rests when hanging the bag, and the rear part of this grip part 68c serves as a cargo loading part.

70 is a vehicle body cover. The vehicle body cover 70 is integrally molded with synthetic resin so as to surround the storage box 40, and its front part smoothly continues to the footrest 18, while its rear part is flat and approximately horizontal below the front of the cargo platform 68. Section 72.

A cylindrical fuel filler port 58a is integrally attached to the fuel tank 58, and the fuel filler port 58a extends from an opening provided in the flat portion 72 of the vehicle body cover 70 to the front of the loading portion of the cargo platform 68, that is, the front of the grip portion 68C that stands up. It is facing below.

A cylindrical seal member 76 is fitted around the fuel filler port 58a in a liquid-tight manner. This sealing material 76 is made of oil-resistant resin or rubber such as closed polyethylene foam, and its lower end surface is in contact with the fuel tank 58, and the upper end surface of the sealing material 76 is in close contact with the lower surface of the opening of the flat portion 72 of the vehicle body cover 70. are doing. That is, since the sealing material 76 is sandwiched between the flat part 72 and the tank 58, a seal is formed between the vehicle body cover 70 and the fuel filler port 58a, and the fuel spilled during refueling is absorbed into the vehicle body cover 7.
0 is prevented.

A one-button type fuel cap 74 is attached to the fuel filler port 58a. The fuel cap 74 has a structure shown in FIG. In this figure, a shilling key 74b inserted into the main body 74a is rotated by inserting and rotating a key (not shown), and this rotation causes a pair of locks 74c to move back toward the center from the position shown in the figure. However, if the key is automatically returned by the spring, the lock 74c is released by the spring 74.
d returns it to the protruding position shown in the figure. Therefore, when the fuel cap 74 is pushed into the fuel filler port 58a, the lock 74c compresses the spring 74d, moves back into the main body 74a, and then returns to engage with the engaging portion provided in the fuel filler port 58a with a one-button operation. Note that this cap 74 is provided with a seal ring 74f that is adjusted to return downward by a spring 74e, and when the cap 74 is attached, this seal ring 74f hits the opening edge (not shown) in the fuel filler port 58a. touched and sealed.

84 is a driver's seat, 86 is a seat bottom plate 86 of this driver's seat 84, and the lower surface of the front end of the seat bottom plate 86 is a storage box 4.
0 front end by a shaft 88. Seat bottom plate 86
A pair of left and right seat portions 90 (only one of which is shown in FIG. 2) that abuts the seat load receiving portion 50 of the storage box 40 are integrally molded at the rear of the storage box 40. The seating position of this seating portion 90 is indicated by a phantom line 90a in FIG. Further, a U-shaped hook 92 hangs down from between the rain seating portions 90 of the seat bottom plate 86, and this hook 92 passes through a window provided in the load receiving portion 50 of the storage box 40 and engages with and disengages from the seat lock 54. ing. Ribs 94 are provided on the seat bottom plate 86 to protrude downward, facing the left and right upper edges and the rear upper edge of the vehicle body cover 70, and a rubber belt-shaped sealing material 96 is attached to the ribs 94.

Therefore, when the key is inserted into the fuel cap 74 and rotated, the lock 74c of the cap 74 is released from the fuel filler port 58a, and the spring 74e compressed when the cap 74 is installed returns the seal ring 74f, causing the cap 74 to pop out from the fuel filler port 58a. . Therefore, the cap 74 can be easily removed. Even if fuel spills from the fuel filler port 58a during refueling, the upper surface of the sealing material 76 that is liquid-tightly fitted into the fuel filler port 58a is pressed from below against the edge of the opening formed in the flat portion 72 of the vehicle body cover 70. , spilled fuel will not flow into the inside of the vehicle body cover 70.

Further, after refueling, the cap 74 can be easily attached by pushing the cap 74 into the refueling port 58a.

(Effects of the Invention) As described above, the present invention has a fuel filler port integrally provided in a fuel tank facing an opening formed in a vehicle body cover at an angle of 4 degrees, and one end surface of a sealing material that is fluid-tightly fitted into the fuel filler port. Because it is in contact with the fuel tank and pressed against the bottom surface of the vehicle body cover, which is the other end, the gap between the fuel tank and the vehicle body cover is reduced, ensuring a large fuel tank capacity, and ensuring a secure gap between the fuel filler port and the vehicle body cover. Can be sealed. Furthermore, the sealing material can be easily made from a cylindrical oil-resistant tube, and there is no need to use expensive molded products, so it is inexpensive.

[Brief explanation of the drawing]

Fig. 1 is a side view of one embodiment of the present invention, Fig. 2 is a partially enlarged sectional view, Fig. 3 is a plan view of the vicinity of the storage box, and Fig. 4 is a view of the vicinity of the fixed part at the rear of the storage box. A sectional view, FIG. 5 is a plan view near the fuel cap, and FIG. 6 is a Vl − in FIG. 2.
7 is a sectional view of the fuel cap. 36... Rear wheel, 58... Fuel tank, 5
8a... Fuel filler port, 70... Vehicle body cover 74.
...Fuel cap, 76...Sealing material. Patent applicant Yamaha Motor Co., Ltd.

Claims (1)

[Claims] In a vehicle in which a cylindrical fuel filler port integrated into the fuel tank faces an opening formed in the vehicle body cover, and a fuel cap is attached to and removed from the fuel filler port from the outside, an oil-resistant cylindrical sealing material is applied to the fuel filler port in a liquid-tight manner. 1. A fuel filler opening sealing device for a vehicle, characterized in that one end surface of the sealing material is fitted into a fuel tank, and the other end surface is brought into close contact with an inner surface of a vehicle body cover.