JP4085683B2 - Fuel tank - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a fuel tank, and more particularly to a fuel tank installed in a vehicle such as an automobile.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, in a fuel tank equipped in a vehicle such as an automobile, a technique for collecting fuel in a fuel tank main body when the vehicle is scrapped is known, and an example thereof is disclosed in Japanese Patent Laid-Open No. 10-250385.
[0003]
As shown in FIG. 5 , in this fuel tank, a groove 108 including a drain portion 106 in which the bottom portion 102 and the side surface 104 are inclined in the longitudinal direction and the width direction is provided in the bottom portion 100A of the fuel tank main body 100. A suction pipe 110 having a suction port for sucking fuel is provided near the drain portion 106. As a result, even when the remaining amount of fuel is decreasing, engine malfunction due to fuel shortage does not occur due to the attitude of the vehicle and the running state.
[0004]
[Problems to be solved by the invention]
However, in such a fuel tank, a reinforcing rib may be formed at the bottom 100A of the fuel tank main body 100 toward the inside (upward) of the tank. It may be difficult to collect fuel. As a result, there is a problem that the fuel in the fuel tank main body 100 cannot be reliably extracted when the vehicle is scrapped.
[0005]
In view of the above facts, an object of the present invention is to provide a fuel tank that can reliably extract the fuel in the fuel tank body when the vehicle is scrapped.
[0006]
[Means for Solving the Problems]
According to the first aspect of the present invention , a rib is formed at the bottom inside the fuel tank body, the bottom is an inclined surface that guides fuel to a predetermined portion of the bottom, and fuel is supplied to the rib. In the fuel tank in which a fuel passage portion for leading to a part is formed , the fuel tank main body serving as a mark when a fuel drain hole is opened in the fuel tank main body on a lower surface of the fuel tank main body corresponding to the predetermined part. Protruding portions that protrude toward the inside of the tank are provided.
[0007]
Therefore, the fuel remaining in the fuel tank main body flows along the bottom portion that becomes the inclined surface and collects at a predetermined portion in the bottom portion. At this time, the rib formed in the bottom portion inside the fuel tank main body is formed with a fuel passage portion for guiding the fuel to the predetermined portion. Therefore, the passage of the fuel passage portion obstructs the rib. Instead, the fuel collects at the predetermined portion. In addition, when an operator opens a fuel drain hole in the predetermined portion at the bottom of the fuel tank body, the fuel tank body is formed with a convex portion protruding from the inside of the fuel tank body as a mark. by forming the vent hole, Ki fuel release hole out be reliably opened the a predetermined site in the bottom of the fuel tank body, at the time of scrapping, it can be withdrawn to ensure fuel in the fuel tank body.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
An embodiment as a comparative example of a fuel tank in the present invention will be described with reference to FIGS.
[0011]
In the figure, the arrow UP indicates the upward direction of the fuel tank body, and the arrow FR indicates the forward direction of the fuel tank body.
[0012]
As shown in FIG. 1, in this embodiment, reinforcing ribs 12, 14, 16, 18, and 20 are formed on the bottom portion 10 </ b> A of the resin fuel tank body 10 so as to project upward from the inside of the tank. .
[0013]
Of these ribs 12, 14, 16, 18, 20, the rib 12 and the rib 14 reach the rear wall portion 10 </ b> C while being separated from each other in the left-right direction from the vicinity of the central portion in the left-right direction in the front wall portion 10 </ b> B of the fuel tank body 10. ing.
[0014]
As shown in FIG. 2, these ribs 12 and 14 are wide, and grooves 22 are formed on the lower surface side for passing the tank band.
[0015]
As shown in FIG. 1, the rib 16 extends rightward from the front-rear direction intermediate portion of the left side wall portion 10 </ b> D of the fuel tank main body 10 to reach the rib 12, and the rib 18 is the right side wall portion of the fuel tank main body 10. 10E extends leftward from the front-rear direction intermediate portion and reaches the rib 14. The rib 20 extends in the left-right direction between the front-rear direction intermediate portion of the rib 12 and the front-rear direction intermediate portion of the rib 14, and both end portions are connected to the rib 12 and the rib 14.
[0016]
The bottom 10A of the fuel tank main body 10 has an inclined surface such that the central portion of the portion surrounded by the front wall 10B, the rib 12, the rib 14, and the rib 20 is the lowest lowermost portion 30. The fuel is led to 30.
[0017]
Further, the lowermost portion 30 has a cylindrical recess 32 as a perforated portion display means that serves as a mark when a fuel drain hole is formed in the fuel tank main body 10 when the vehicle is scrapped or the like. (See below) and projecting downward.
[0018]
As shown in FIG. 2, a U-shaped notch 34 as a fuel passage portion is formed at a substantially central portion in the left-right direction of the rib 20, and the fuel passes through the notch 34 so that the fuel is in the lowermost portion 30. It has come to be guided.
[0019]
As shown in FIG. 3, U-shaped notches 36 and notches 38 as fuel passage portions are formed adjacent to both front and rear sides of the connecting portion of the rib 12 with the rib 16, and these notches 36 are formed. , 38, the fuel is guided to the lowermost portion 30.
[0020]
As shown in FIG. 4, a U-shaped notch 40 as a fuel passage portion is formed in a portion of the rib 14 that is spaced a predetermined distance forward of the connecting portion with the rib 18. A U-shaped cutout 42 as a fuel passage portion is formed adjacent to the rear side portion of the connecting portion. Further, the fuel is guided to the lowermost portion 30 by passing through the notches 40 and 42.
[0021]
Next, the operation of this embodiment will be described.
[0022]
In the fuel tank of the present embodiment, the fuel remaining in the fuel tank main body 10 flows along the bottom portion 10A having an inclined surface as shown by the arrow W in FIGS. 1 to 4, and the lowermost portion 30 in the bottom portion 10A. To gather. At this time, the ribs 20, 12, 14 formed on the bottom 10 </ b> A inside the fuel tank body 10 are formed with notches 34, 36, 38, 40, 42 for guiding the fuel to the lowermost portion 30. By passing through these notches 34, 36, 38, 40, 42, fuel is collected in the lowermost portion 30 without being obstructed by the ribs 20, 12, 14.
[0023]
As a result, the operator can reliably extract the fuel in the fuel tank body 10 when the vehicle is scrapped by opening a fuel drain hole in the lowermost portion 30 of the bottom 10A of the fuel tank body 10.
[0024]
Further, in this embodiment, when a worker opens a fuel drain hole in the bottom portion 10A of the fuel tank 10 body, the fuel drain hole is formed using the cylindrical recess 32 formed in the lower surface 10F of the fuel tank body 10 as a mark. By forming the fuel drain hole, the fuel drain hole can be surely opened in the lowermost portion 30 where the fuel is collected at the bottom 10A of the fuel tank body 10.
[0026]
Note that in one embodiment of the fuel tank according to the present invention, in the comparative example shown in FIG. 2, a cylindrical recess 32 that protrudes downward from the lower surface 10 </ b> F of the fuel tank body 10 is provided on the fuel tank body 10. It is a convex part protruding to the inside (upward) of the tank .
[0027]
Further, the fuel tank of the present invention can be applied to a metal fuel tank body other than the resin fuel tank body 10.
[0028]
【The invention's effect】
According to the first aspect of the present invention , a rib is formed at the bottom inside the fuel tank main body, the bottom is an inclined surface that guides fuel to a predetermined part of the bottom, and the fuel is guided to the predetermined part by the rib. In the fuel tank in which the fuel passage portion is formed, a projecting portion that protrudes toward the inside of the fuel tank main body, which serves as a mark when the fuel drain hole is opened in the fuel tank main body, is formed on the lower surface of the fuel tank main body corresponding to a predetermined portion. Since it is provided, a fuel drain hole can be reliably opened at a predetermined portion in the bottom of the fuel tank body, and the fuel tank body has an excellent effect that the fuel in the fuel tank body can be reliably removed when the vehicle is scrapped.
[Brief description of the drawings]
FIG. 1 is a plan sectional view showing a bottom portion of a fuel tank according to an embodiment as a comparative example of the present invention.
FIG. 2 is a cross-sectional view taken along line 2-2 of FIG.
3 is a cross-sectional view taken along line 3-3 in FIG.
4 is a cross-sectional view taken along line 4-4 of FIG.
FIG. 5 is a perspective view showing a fuel tank according to the prior art.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Fuel tank main body 10A Bottom part of fuel tank main body 10F Lower surface of fuel tank main body

Claims (1)

A rib is formed at the bottom inside the fuel tank main body, the bottom is an inclined surface that guides fuel to a predetermined part of the bottom, and a fuel passage part for guiding fuel to the predetermined part is provided on the rib. In the formed fuel tank, a protrusion projecting toward the inside of the fuel tank main body is provided on the lower surface of the fuel tank main body corresponding to the predetermined portion as a mark when a fuel drain hole is formed in the fuel tank main body. A fuel tank characterized by that.

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