JP2602790Y2 - Automotive fuel storage device - Google Patents

Description

[Detailed description of the invention]

[0001]

This invention provides a sub-tank in a fuel tank and suppresses the fuel stored in the sub-tank from flowing out of the sub-tank, so that the intake of fuel from inside the sub-tank is prevented. The present invention relates to an automobile fuel storage device that can be effectively performed.

[0002]

2. Description of the Related Art Conventionally, the above-mentioned fuel storage device for automobiles has
There is one disclosed in Japanese Patent Publication No. 6-510720.

[0003] According to this, a sub-tank is provided at the bottom of the fuel tank, and this sub-tank is formed of a spirally extending partition wall in plan view. A space sandwiched between the outer end side and the inner end side of the partition wall is a fuel passage communicating between the inside and the outside of the sub-tank, and a fuel provided to supply the fuel in the fuel tank to the outside. A suction section is provided inside the sub tank.

[0004] A regulating plate facing the inside of the sub-tank is provided for an inner end opening of the fuel passage opening toward the inside of the sub-tank, and one end of the regulating plate is provided with a partition inside the sub-tank. It is joined to the inner surface of the wall.

According to the prior art, the partition wall is formed in a spiral shape extending clockwise from the outer end side to the inner end side. When the vehicle turns right, the fuel inside the sub tank is removed. , Ru flows along the inside of the partition wall inner surface of the sub tank in the inertia force. At this time, the fuel is
End opening, but as described above, this inner end opening
A regulating plate facing the mouth from the inside of the sub tank
Since is provided, the fuel flows into the through fuel passage the inner end opening, the through Ri subtank the fuel passage
Trying to flow out to the outside is restricted by the restricting plate, with it, so that the storage of the fuel to the interior of the sub tank is maintained.

On the other hand, as described above, since the partition wall has a spiral shape extending clockwise, conversely, when the vehicle turns left, the fuel outside the sub-tank flows into the fuel passage due to its inertia. At the same time, the fuel flows through the fuel passage and the inner end opening, flows into the sub tank, and is stored therein. At the time of this inflow, as described above, a regulating plate is provided opposite to the inner end opening of the fuel passage, and the regulating plate extends in the same direction as the direction in which the partition wall extends in a spiral shape. Therefore, as described above, fuel flowing from the outside of the sub-tank through the fuel passage into the inside of the sub-tank is allowed to flow into the inside of the sub-tank without being greatly affected by the presence of the regulation plate, and Will be stored.

[0007] Therefore, even if the amount of fuel in the fuel tank is low, the storage of fuel in the sub-tank is maintained, so that fuel can be effectively sucked through the fuel suction portion. Has become.

[0008]

An invention is the way, in the above conventional art, the space between the other end of the regulating plate and the inner end of the partition wall is allowed to open toward the central portion of the inside of the sub tank for this reason, the vehicle is, for example, by turning to the right,
Fuel inside the sub tank, the inertial force <br/> flow Rutoki counterclockwise, the flow of the fuel into the opening of the hole axis of the space
Since the flow so as to be substantially perpendicular against the open of the space
The fuel reaching the mouth, and inflows to the fuel passage through the space in the centrifugal force, it may become easy to be discharged from the interior of the sub tank.

[0009] For this reason, in the above-mentioned conventional technique, it is not always satisfactory in trying to more reliably hold the fuel stored in the sub-tank, and there is room for improvement.

[0010]

The purpose of the present invention is to pay attention to the above-mentioned situation, and to make sure that the fuel stored in the sub-tank in the fuel tank is prevented from flowing out of the sub-tank. On the other hand, an object of the present invention is to make it possible for the fuel to flow into the sub-tank smoothly, and to more reliably keep the fuel stored inside the sub-tank.

[0011]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention is characterized in that the bottom of the fuel tank 1 is provided.
The sub-tank 6 provided, in plan view, while constituting a partition wall 9 which extends sub tank 6 of this helically, the partition walls
9 is a fuel passage 1 for communicating a space between the outer end 11 and the inner end 12 with the inside 13 of the sub-tank 6 and the outside.
4 and then, the strainer (fuel suction part) 17 provided to supply fuel in the fuel tank 1 to the outside, is disposed in the interior 13 of the sub-tank 6, toward the inside 13 of the sub-tank 6 an opening Inner end opening of the fuel passage 14
To 23, the regulation plate 24 facing the interior 13 side of the same sub-tank 6 is provided, in the case where the one end 24a of the regulating plate 24 was bonded to the partition wall 9 the inner surface of the inner 13 of the sub-tank 6,

In a plan view, the inner wall 12 extends from the outer end 11 of the partition wall 9 in a direction opposite to the direction in which the inner wall 12 extends .
First, from the inside 13 side of the sub tank 6
The other end 24 of the regulation plate 24 so as to face the side surface of the inner end 12.
b is extended from the one end 24a side of the regulating plate 24 ,
Extending along the extending direction of the inner end 12 of the partition wall 9 between the other end 24b of the restricting plate 24 and the inner edge 12 of the partition wall 9
An extended fuel passage 26 is formed, and the inside 13 of the sub tank 6 and the fuel passage 14 are communicated with each other through the extended fuel passage 26 .

[0013]

[Operation] The operation of the above configuration is as follows.

[0014] Specifications other end 2 of the inner end 12 and the regulating plate 24 Setsukabe 9
Extending fuel passage 26 between the 4b is the extending end thereof extending along a direction fuel passage 14 of the inner end 12 of the partition wall 9
The other end opens toward the inside 13 of the sub tank 6
The opening at the other end of the extended fuel passage 26
Is opened toward the inside 13 of the sub-tank 6 so as to face in the direction opposite to the direction in which the inner end 12 of the partition wall 9 extends.

Here, for example, as shown in FIG. 2, when the partition wall 9 has a spiral shape extending clockwise from the outer end 11 side to the inner end 12 side, the above-described extension is used. Fuel passage 2
The opening 6 opens counterclockwise along the inner surface of the partition wall 9 as viewed from the inside 13 of the sub-tank 6 .

Therefore, when the car turns right,
As shown by a virtual line in each figure, the inside 1
The fuel 2 of the third sub-tank 6
When flowing counterclockwise along the inner surfaces of the partition wall 9 and the regulating plate 24 viewed from the viewpoint, the flow direction of the fuel 2 and the extension
Since the direction of the opening of the fuel passage 26 is the same, the fuel 2 is the extension fuel passage 26 of the internal 13 of the sub-tank 6
Is prevented from flowing into the fuel passage 14 through the sub-tank 6.
Is suppressed from being discharged.

On the other hand, when the automobile makes a left turn, the fuel 2 flowing into the fuel passage 14 of the sub-tank 6 passes through the fuel passage 14 due to its inertial force, as shown by solid arrows in each figure.
And, it flows into the inside 13 of the sub tank 6 through the inner end opening 23 and the extended fuel passage 26. At this time, a regulating plate 24 is present facing the inner end opening 23 of the fuel passage 14. Since the regulating plate 24 is in a forward direction with respect to the spiral direction of the partition wall 9, fuel 2 14 without being much affected by the presence of the regulation plate 24, the
The gas smoothly flows into the interior 13 of the sub tank 6 through the extended fuel passage 26 and is stored therein.

[0018]

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

(Embodiment 1)

1 to 3 show a first embodiment.

In FIG. 1, reference numeral 1 denotes a fuel tank mounted on an automobile, and an arrow Fr in the figure indicates the front of the automobile. Note that the left and right described below refer to the direction toward the front of the automobile.

The fuel 2 is stored in the fuel tank 1. An opening 3 is formed in the upper surface of the fuel tank 1, and the opening 3 is closed by a cover plate 4 so as to be openable and closable.

At the bottom of the fuel tank 1, a sub tank 6 made of resin is provided. The sub-tank 6 has a substrate 8 attached to the bottom plate 7 of the fuel tank 1 and a partition wall 9 integrally formed on the substrate 8. The partition wall 9 extends spirally in a plan view, and has a clockwise spiral shape from the outer end 11 side to the inner end 12 side.

The outer end 11 side and the inner end 1 of the partition wall 9
The space between the two sides is the interior 13 of this sub tank 6.
And a fuel passage 14 that communicates with the outside.

A fuel pump 16 is provided in the inside 13 of the sub-tank 6, and a strainer 17 as a fuel suction portion is attached to a suction port of the fuel pump 16. One end of a fuel supply pipe 18 is connected to the discharge port of the fuel pump 16, and the other end of the fuel supply pipe 18 is connected to the engine side through the cover plate 4.

When the fuel pump 16 operates, the fuel 2 is supplied to the engine through the strainer 17, the fuel pump 16 and the fuel supply pipe 18.

The fuel pump 16 is supported by the bracket 4 on the cover plate 4. When the cover plate 4 is opened and closed with respect to the opening 3, the fuel pump 16 and the strainer 17 are integrated with the fuel tank 1 through the opening 3.
It can be inserted and removed freely.

The sub-tank 6 has a spiral shape as described above, and its outer peripheral wall has a substantially rectangular shape in plan view, and has a first wall 9a corresponding to the inner end 12 and a second wall 9a successively connected thereto.
It has fourth walls 9b to 9d. The fourth wall 9d
A fifth wall 9e extends substantially in parallel with the first wall 9a from the end of the second wall 9e.
A sixth wall 9f extends substantially parallel to b. This sixth wall 9
The extending end of f is the inner end 12, and a chamfered portion 20 is formed at the upper end of the inner end 12.

An outer end opening 22 for opening the fuel passage 14 to the outside of the sub-tank 6 is provided between the joint between the fourth wall 9d and the fifth wall 9e and the outer end 11. In this case, a seventh wall 9g is integrally formed between the joint between the fourth wall 9d and the fifth wall 9e and the upper part of the outer end 11, and the outer end opening 22 is rectangular. I have.

On the other hand, between the third wall 9c and the inner end 12 is an inner end opening 23 of the fuel passage 14 which opens toward the inside 13 of the sub tank 6.

A regulating plate 24 is integrally formed on the substrate 8 so as to face the inner end opening 23 from the inside 13 of the sub-tank 6 as described above, and one end 24 a which is a front end of the regulating plate 24.
Are integrally joined to the inner surface of the third wall 9c. The other end 24b, which is the rear end of the regulating plate 24, is in a direction (rearward) opposite to the direction in which the inner end 12 extends from the outer end 11 of the partition wall 9 (forward) in plan view. To face , and
From the inside 13 side of the sub-tank 6 to the inner end of the partition wall 9
The one end 24 of the regulating plate 24 so as to face the 12 side surfaces.
It is extended from the a side. The inner end of the upper Kitsukamatsu Setsukabe 9 12
Between the partition wall 9 and the other end 24b of the regulating plate 24 .
An extended fuel passage 26 extending along the direction of extension of the end 12 is shaped.
The inside 13 of the sub tank 6 and the fuel passage 14 are communicated with each other through the extended fuel passage 26 . The other end 24b of the regulating plate 24 is slightly bent toward the sixth wall 9f.
It is 5.

In the above case, since the partition wall 9 has a spiral shape clockwise from the outer end 11 side to the inner end 12 side, the inner end 12 of the partition wall 9 and the other end of the regulating plate 24 are formed. 24b
The extended fuel passage 26 is opened in the counterclockwise direction along the inner surface of the partition wall 9 viewed from the inside 13 of the sub-tank 6 .

Therefore, when the car turns right,
As shown by a virtual line in each figure, the inside 1
The fuel 2 of the third sub-tank 6
When flowing counterclockwise along the inner surfaces of the partition wall 9 and the regulating plate 24 viewed from the viewpoint, the flow direction of the fuel 2 and the extension
Since the direction of the opening of the fuel passage 26 is the same, the fuel 2 is the extension fuel passage 26 of the internal 13 of the sub-tank 6
Is prevented from flowing into the fuel passage 14 through the sub-tank 6.
Is suppressed from being discharged.

Therefore, even when the fuel 2 in the fuel tank 1 becomes low, the fuel 2 is effectively sucked through the strainer 17.

On the other hand, when the vehicle turns left, the fuel 2 flowing into the fuel passage 14 of the sub-tank 6 passes through the fuel passage 14 due to its inertia as indicated by solid arrows in each figure.
And, it flows into the inside 13 of the sub tank 6 through the inner end opening 23 and the extended fuel passage 26. At this time, as described above, the regulating plate 24 exists opposite the inner end opening 23 of the fuel passage 14. However, since the regulating plate 24 is in the forward direction of the spiral direction of the partition wall 9, The fuel 2 in the fuel passage 14 flows through the extended fuel passage 26 smoothly into the interior 13 of the sub-tank 6 without being largely influenced by the presence of the regulation plate 24, and is stored therein.

When the partition wall 9 has a counterclockwise spiral shape, contrary to the example shown in the figure, "left" in the above operation is read as "right" and "right" is read as "left". I just need.

(Embodiment 2)

FIG. 4 shows a second embodiment.

According to this, the inner end 12 of the partition wall 9 is bent so as to be shifted more toward the second wall 9b than the general portion 9h of the sixth wall 9f. The restriction plate 24 is provided on a virtual extension line of the general portion 9h of the sixth wall 9f.

Since other configurations and operations are the same as those of the first embodiment, the same reference numerals are given to the drawings and the description is omitted.

(Embodiment 3)

FIG. 5 shows a third embodiment.

According to this, the extending end of the fifth wall 9 e is the inner end 12 of the partition wall 9. Further, one end of the regulating plate 24 is integrally connected to the inner surface of the second wall 9b.

Since other structures and operations are the same as those of the first embodiment, the same reference numerals are given to the drawings and the description thereof will be omitted.

[0045]

According to the present invention, a sub-tank is provided at the bottom of the fuel tank, the sub-tank is formed of a spirally extending partition wall in plan view, and the outer end side and the inner end side of the partition wall are connected to each other. A space sandwiched by the sub-tank as a fuel passage for communicating the inside and the outside of the sub-tank, a fuel suction portion provided to supply the fuel in the fuel tank to the outside, disposed inside the sub-tank, A regulating plate facing the inside of the sub-tank is provided for an inner end opening of the fuel passage opening toward the inside of the sub-tank, and one end of the regulating plate is joined to an inner surface of a partition wall inside the sub-tank. In automotive fuel storage devices,

In a plan view, the sub- wall extends in a direction opposite to the direction in which the inner end extends from the outer end side of the partition wall , and
From the inside of the tank and the other end of the I <br/> the Hare said regulation plate facing the inner end side of the partition wall is extended from the one end side of the regulating plate, the regulating plate and the inner end of the partition wall Specifications above between the other end
An extended fuel passage extending along the direction of extension of the inner end of the cut wall is formed.
The inside of the sub tank and the fuel passage are communicated with each other through the extended fuel passage .

[0047] Therefore, extended fuel passage between the inner end of the upper Symbol partition wall and the other end of the regulating plate is rolled attitude of the inner end of the partition wall
One end communicates with the fuel passage, and the other end
Since the opening opens toward the inside of the sub tank,
The opening at the other end of the long fuel passage is opened toward the inside of the sub-tank so as to face in the direction opposite to the direction in which the inner end of the partition wall extends.

More specifically, when the partition wall has a spiral shape extending clockwise (or left) from the outer end side to the inner end side, the extended fuel passage is formed by the sub- tank.
The opening opens in the left (or right) direction along the inner surface of the partition seen from the inside of the link .

Therefore, when the vehicle turns right (or left), the fuel inside the sub-tank turns counterclockwise along the inner surfaces of the partition wall and the regulating plate viewed from the inside of the sub-tank due to its inertia. (Or clockwise), the direction of the fuel flow is the same as the direction of the opening of the extended fuel passage , so that the fuel inside the sub-tank will flow into the fuel passage through the extended fuel passage . That is, the fuel is prevented from being discharged from the inside of the sub-tank.

On the other hand, when the vehicle turns left (or right), the fuel flowing into the fuel passage of the sub-tank passes through this fuel passage due to its inertia force, and the inner end opening and the above-mentioned fuel passage.
The fuel flows into the sub tank through the extended fuel passage .
At this time, there is a regulating plate facing the inner end opening of the fuel passage. However, since the regulating plate is in a forward direction with respect to the spiral direction of the partition wall, the fuel in the fuel passage is restricted by the regulation. Through the above-mentioned extended fuel passage without being largely affected by the presence of the plate.
The fluid smoothly flows into the sub tank and is stored here.

That is, while the fuel stored in the sub-tank is prevented from flowing out of the sub-tank, the flow of fuel into the sub-tank is made smooth. The storage of the fuel in the sub-tank is more reliably held, and the fuel can be more effectively sucked through the fuel suction portion provided in the sub-tank.

[Brief description of the drawings]

FIG. 1 is a perspective view of a sub tank according to a first embodiment.

FIG. 2 is a side sectional view of the first embodiment.

FIG. 3 is a plan view of a sub tank in the first embodiment.

FIG. 4 is a diagram corresponding to FIG. 3 in the second embodiment.

FIG. 5 is a diagram corresponding to FIG. 3 in the third embodiment.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Fuel tank 2 Fuel 6 Sub tank 7 Bottom plate 8 Substrate 9 Partition wall 11 Outer end 12 Inner end 13 Inner 14 Fuel passage 16 Fuel pump 17 Strainer (fuel suction part) 23 Inner end opening 24 Regulator plate 24a One end 24b Other end 26 Extended fuel aisle

Claims (1)

(57) [Scope of request for utility model registration] 1. A sub-tank is provided at the bottom of a fuel tank,
In a plan view, the sub-tank is configured with a partition wall extending in a spiral shape, and a space sandwiched between an outer end side and an inner end side of the partition wall is a fuel passage for communicating the inside and the outside of the sub-tank, A fuel suction portion provided for supplying the fuel in the fuel tank to the outside thereof is disposed inside the sub-tank, and the same as above with respect to an inner end opening of the fuel passage opening toward the inside of the sub-tank. In a vehicle fuel storage device in which a regulating plate facing from the inside of the sub-tank is provided, and one end of the regulating plate is joined to the inner surface of the partition inside the sub-tank, in plan view, from the outer end side of the partition, The inside of the sub tank is oriented in the direction opposite to the direction in which the inner end extends.
By extending the other end of the regulating plate from said one end of the regulating plate so as to face from the side on the inner end side of the partition wall, and the other end of the regulating plate and the inner end of said specifications <br/> Setsukabe Between the inner edge of the partition wall
Forming an extended fuel passage extending along the extension direction;
An automotive fuel storage device in which the inside of the sub-tank and the fuel passage communicate with each other through a long fuel passage .