JPH08318744A - Filler pipe structure - Google Patents

Abstract

PURPOSE: To eliminate fueling stoppage in the course of fueling caused by a malfunction of a fueling stop sensor, by eliminating spattering of fuel in a filler pipe during fuel filling, relating to a filler pipe structure for filling fuel into a fuel tank equipped in a vehicle or the like. CONSTITUTION: A gun receiving part 14 contacting with a tip end of a fueling gun 7 is equipped in a filler pipe 2, and a seal member 16 is equipped on a part where the fueling gun 7 contacts with the gun receiving part so that fuel supplied from the fueling gun 7 may not spatter in the filler pipe 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a filler pipe structure which is connected to a fuel tank installed in a vehicle or the like and injects fuel into the fuel tank.

[0002]

2. Description of the Related Art FIG. 8 is a sectional view partially showing a conventional communication structure between a filler pipe and a fuel tank, and FIG. 9 is an enlarged sectional view of a filler neck portion of FIG. 8 during refueling. In FIG. 8, 1 is a fuel tank, 2 is a filler pipe, 3 is a filler neck, 4 is a leveling pipe, 7 is a fuel gun,
Reference numeral 10 is a fuel filler port.

Conventionally, in a vehicle or the like, a fuel tank 1 is usually used.
Is installed almost in the lower part of the vehicle body, and the fuel tank 1
A filler neck 3 of a filler pipe 2 that communicates with the filler pipe 2 is opened outside the upper portion of the vehicle body to form a fuel filler port 10. Further, as shown in FIG. 8, the inner end of the filler pipe 2 and the lower portion of the fuel tank 1 are connected by a rubber pipe 6, and the upper portion of the fuel tank 1 and the filler neck 3 of the filler pipe 2 are leveling pipes 4. Is communicated by.

Further, a filler port 10 is formed in the external opening of the filler neck 3, and a guide 9 is provided to insert the filler gun 7 into the center portion of the filler neck 3. Depending on the vehicle model, this is provided. Some are not. With such a configuration, the filler neck 3 of the filler pipe 2 is located higher than the fuel tank 1, and when refueling the fuel tank 1, the refueling gun 7 is inserted into the filler neck 3 through the refueling port 10 to inject fuel. Then, the fuel flows into the fuel tank 1 through the filler pipe 2.

When the fuel tank 1 is full, the fuel flows back to the filler neck 3 through the leveling pipe 4, and the recirculated fuel is supplied to the refueling stop sensor 8 of the refueling gun 7.
Therefore, the refueling from the refueling gun 7 is automatically stopped.

[0006]

However, in such a conventional filler pipe structure, as shown in FIG.
When refueling is performed from the refueling gun 7 with the fuel 11 up to the filler neck 3, the fuel to be refueled hits the existing fuel 11 as shown by an arrow a, and bounces off to act on the refueling stop sensor 8. The refueling from the refueling gun 7 is stopped.

Therefore, if refueling is stopped halfway before all refueling is completed or there is residual fuel up to the filler neck in the filler pipe, there is a problem that additional refueling will be hindered. The present invention has been devised in view of such a problem, and by preventing the refueling fuel from the refueling gun from hitting the fuel in the filler pipe and rebounding, the refueling stop sensor does not operate before refueling is completed. The purpose of the present invention is to provide a filler pipe structure that ensures reliable refueling until the end.

[0008]

For this reason, the filler pipe structure according to the first aspect of the present invention has a filler port communicating with the fuel tank and having a filler gun inserted therein, and in the vicinity of the filler port. In a filler pipe in which a leveling pipe that regulates the amount of fuel in the fuel tank is communicated, a gun receiving portion that abuts a tip of the refueling gun inserted into the refueling port and defines an insertion degree of the refueling gun is a filler. A seal member is provided in the pipe and at a contact portion between the tip of the fuel gun and the gun receiving portion so that fuel supplied from the fuel gun does not scatter in the filler pipe. It has a feature.

Further, in the filler pipe structure according to claim 2 of the present invention, when the refueling gun and the gun receiving portion are in contact with each other,
The fuel receiving stop sensor of the fueling gun and the opening of the leveling pipe correspond to the gun receiving portion. Further, in the filler pipe structure according to claim 3 of the present invention, a sub pipe having the gun receiving portion that abuts against a tip of the fuel gun is provided inside the filler pipe, and the gun receiving portion and the fuel gun are provided. It is characterized in that an enclosing type sealing member which encloses the abutting portion of the sub pipe from the periphery is provided at the tip portion of the sub pipe.

Further, in the filler pipe structure according to claim 4 of the present invention, the upper edge of the surrounding seal member is folded back inward to guide the insertion of the refueling gun toward the gun receiving portion. It is characterized in that it is formed as an edge. Further, the filler pipe structure according to claim 5 of the present invention is characterized in that an inner end of the sub pipe extends in the filler pipe toward the fuel tank side.

[0011]

In the filler pipe structure according to claim 1 of the present invention described above, a gun receiving portion is provided inside the filler pipe for defining the insertion of the refueling gun, and a contact portion between the tip of the refueling gun and the gun receiving portion is provided. Since the seal member is provided in the fuel cell, the fuel to be refueled does not scatter in the filler pipe and does not reach the refueling stop sensor. Therefore, refueling does not stop in the middle of refueling.

Further, in the filler pipe structure according to claim 2 of the present invention, at a position where the fueling gun and the gun receiving portion are in contact with each other,
Since the refueling stop sensor of the refueling gun and the leveling pipe opening are made to correspond to each other, the refueling is surely stopped when the fuel tank is filled with the fuel to be refueled. Further, in the filler pipe structure according to claim 3 of the present invention, since the contact portion between the tip of the refueling gun and the gun receiving portion at the tip of the sub-pipe is surrounded from the periphery by the enclosing seal member, The fuel is reliably prevented from scattering and the malfunction of the refueling stop sensor is eliminated.

In the filler pipe structure according to claim 4 of the present invention, the upper edge of the enclosing seal member is folded back inward to serve as a gun guide edge for guiding the insertion of the fuel gun. The insertion is accurately abutted against the gun receiving part to ensure the prevention of fuel scattering. Further, in the filler pipe structure according to claim 5 of the present invention, since the inner end of the sub pipe extends toward the fuel tank, the fuel flowing out from the inner end of the sub pipe at the time of refueling does not affect the filler neck. No fuel is scattered.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIGS. 1 to 6 show an embodiment of a filler pipe structure according to the present invention, and FIG. 1 is a sectional view of a filler neck portion of a filler pipe. 2 is a side view of the opening end of the sub-pipe in which the surrounding seal member is mounted, FIG. 3 is a perspective view of the surrounding seal member, and FIG. 4 is a partial cross-sectional side of the opening of the sub-pipe in which the direct contact sealing member is mounted. FIG. 5 is a sectional view of the bracket mounting portion taken along the line VV of FIG. 1, FIG. 6 is an overall configuration diagram of a fuel refueling structure which is a sectional view other than a fuel tank, and FIG. 7 is another view of the present invention. It is sectional drawing of the filler neck part which shows an Example, and in FIG. 1-7, the code | symbol same as FIG. 8 and 9 has shown the substantially similar part.

Now, in FIG. 1, 3 is a filler pipe 2.
A filler neck 10 having a guide 9 is formed at an open end of the filler neck 3, and a leveling pipe 4 is connected to a part of a side wall of the filler neck 3. Thus, the opening 5 of the leveling pipe 4 is formed. Also, as shown in FIG.
The inner end of the filler pipe 2 is connected to the lower part of the fuel tank 1 by a rubber pipe 6 or the like, and the upper end of the fuel tank 1 is connected to the inner end of the leveling pipe 4.

A sub-pipe 12 is provided inside the filler pipe 2 substantially along the central axis of the filler pipe 2. That is, the sub pipe 12 is, for example,
It is stably supported and fixed by several 3 to 4 brackets 13 (see FIG. 5) radially interposed between the inner wall of the filler pipe 2 and several places along its length. The gap between the brackets 13 does not hinder the flow of fuel between the sub pipe 12 and the filler pipe 2.

The outer end portion of the sub-pipe 12 is formed as a gun receiving portion 14 that contacts the tip of the fueling gun 7, and the gun receiving portion 14 is provided on the fueling gun 7 by contacting the fueling gun 6. The refueling stop sensor 8 and the opening 5 of the leveling pipe 4 opening to the filler neck 3.
It is provided in such a position as to face and. And
The inner end 15 of the sub pipe 12 extends in the direction of the fuel tank 1 in the filler pipe 2, and if necessary, the inner end 15 of the sub pipe 12 reaches the position of the rubber pipe 6 as shown in FIG. It may be extended.

Further, an enclosing seal member 16 as shown in FIG. 3 is attached to the outer end portion of the sub pipe 12, that is, the outer periphery of the gun receiving portion 14 by fitting a narrow portion 16a at the lower portion thereof. Further, as shown in FIGS. 2 and 3, a gun guide edge 16b is formed at the upper edge of the envelope type sealing member 16 so as to be folded back from the periphery toward the inner center to guide the insertion of the fuel gun 7. .

Therefore, at the time of refueling, when the refueling gun 7 is inserted through the refueling port 10, the tip of the refueling gun 7 is guided to the gun guide edge 16b and abuts the gun receiving portion 14 of the sub-pipe 12, and the refueling gun 7 Of the fueling stop sensor 8 faces the opening 5 of the leveling pipe 4, and the contact portion between the tip of the fueling gun 7 and the gun receiving portion 14 is surrounded and surrounded by the surrounding seal member 16 from above and below. ing.

In addition to the above structure,
As shown in FIG. 5, a direct contact seal member 17 with an expanded upper opening is attached to the peripheral edge of the gun receiving portion 14 so as to directly cover the contact portion between the fueling gun 7 and the gun receiving portion 14. ing. With the above configuration, the fuel injected from the fueling gun 7 is directly injected into the sub-pipe 12 by the contact between the fueling gun 7 and the gun receiving portion 14, so that almost no fuel is jetted or leaked from the contacting portion. Without this, the fuel 11 in the filler pipe 2 is hit by the fuel oil and does not bounce back.

Even if there is a partial ejection leak, since the surroundings are surrounded by the enclosing seal member 16,
The fuel is reliably prevented from scattering, and the refueling stop sensor 8
There is an effect that no fuel is required and the fuel can be reliably fed until the end. Moreover, in addition to the above, by providing the direct contact seal member 17, the effect of preventing fuel scattering is further improved.

The refueling stop sensor 8 of the refueling gun 7 and the leveling pipe opening 5 face each other in a state where the refueling gun 7 and the gun receiving portion 14 are in contact with each other, so that the recirculated fuel from the leveling pipe 4 is refueled. The stop sensor 8 properly receives the effect of accurately stopping refueling of the fuel when the fuel tank is full. Further, since the upper edge of the envelope type seal member 16 is folded back to form the gun guide edge 16b, when the refueling gun 7 is inserted, the refueling gun 7 and the gun receiving portion 1 are inserted.
4 has the effect of making proper contact with No. 4 and more useful in preventing fuel leakage.

Furthermore, since the inner end of the sub pipe 12 extends toward the fuel tank 1, the fuel flowing out from the tip of the sub pipe 12 does not affect the filler neck 3 portion.
This is more effective in eliminating the scattering of fuel in the filler pipe 2 during refueling. As shown in FIG. 7, a partition 18 for blocking the flow of fuel is provided in the filler neck 3 without providing the sub-pipe 12, and a gun receiving portion 19 for contacting the tip of the fuel gun 7 is provided at the center thereof. The gun receiving portion 19 may be provided with a contact-type seal member 20 similar to the above-mentioned direct contact seal member. In this configuration as well, the residual fuel 11 in the filler pipe during fuel injection 11
It is possible to prevent the malfunction of the fuel supply stop sensor 8 due to the rebound to the.

In this case, the contact type seal member 2
The intended purpose can be achieved with a simple structure by making the upper edge of 0 slightly deeper.

[0025]

As described in detail above, the first aspect of the present invention
According to the described filler pipe structure, the leveling pipe is communicated with the fuel tank and has the fuel filler port into which the fuel filler gun is inserted, and the leveling pipe for regulating the fuel amount in the fuel tank is communicated near the fuel filler port. In the filler pipe, a gun receiving portion that abuts on a tip of the fuel gun inserted into the fuel filler port and regulates the insertion degree of the fuel gun is provided in the filler pipe, and fuel supplied from the fuel gun is supplied. Since the seal member is provided at the contact portion between the tip of the refueling gun and the gun receiving portion so as not to scatter in the filler pipe, the fuel supplied from the refueling gun does not scatter in the filler pipe, Since the refueling stop sensor of the refueling gun is not applied, there is an advantage that the refueling is not stopped in the middle of refueling where the fuel tank is not full and the fuel can be reliably refueled to the end.

According to the filler pipe structure of the second aspect of the present invention, the refueling stop sensor of the refueling gun and the opening of the leveling pipe correspond to each other when the refueling gun and the gun receiving portion contact each other. Since the gun receiving portion is provided in such a position as described above, there is an advantage that the fuel supply is surely stopped when the fuel tank is full so that the fuel does not spill out from the fuel supply port.

Further, according to the filler pipe structure of the third aspect of the present invention, a sub pipe having the gun receiving portion that abuts against a tip of the fueling gun is provided inside the filler pipe, and the gun receiving portion is provided. Since the enclosing type sealing member that surrounds the contact portion between the portion and the refueling gun from the periphery is provided at the tip of the subpipe, the fuel refueled from the refueling gun is refueled in the subpipe and Since the contact portion with the refueling gun is covered with the seal member from the surroundings, there is an advantage that scattering at the time of refueling is surely eliminated and malfunction of the refueling stop sensor is surely prevented.

According to the filler pipe structure of the fourth aspect of the present invention, the upper edge of the surrounding seal member is folded back inward to guide the insertion of the refueling gun toward the gun receiving portion. Since it is formed as a gun guide edge, the insertion of the refueling gun is accurately abutted on the gun receiving part of the sub pipe,
There is an advantage that the prevention of fuel scattering is further ensured. Further, according to the filler pipe structure of the fifth aspect of the present invention, since the inner end of the sub pipe extends in the filler pipe toward the fuel tank side, the fuel to be refueled is supplied to the sub pipe. Since it is sent to the back of the filler pipe through it, there is an advantage that it further helps prevent the fuel from scattering.

[Brief description of drawings]

FIG. 1 is a sectional view of a filler neck portion showing an embodiment of the present invention.

FIG. 2 is a side view of a tip portion of a sub pipe.

FIG. 3 is a perspective view of an envelope type seal member.

FIG. 4 is a partial cross-sectional side view of a tip portion of a sub pipe.

5 is a cross-sectional view taken along the line VV of FIG.

FIG. 6 is an overall configuration diagram showing a fuel refueling structure of the present invention in a partial cross section.

FIG. 7 is a sectional view of a filler neck portion showing another embodiment of the present invention.

FIG. 8 is an overall configuration diagram showing a conventional fuel refueling structure in a partial cross section.

FIG. 9 is a cross-sectional view of a filler pipe showing a conventional state during refueling.

[Explanation of symbols]

 1 Fuel Tank 2 Filler Pipe 3 Filler Neck 4 Leveling Pipe 5 Opening 6 Rubber Tube 7 Refueling Gun 8 Refueling Stop Sensor 9 Guide 10 Refueling Port 11 Fuel 12 Subpipe 13 Bracket 14 Gun Receiving Portion 15 Inner End 16 Enclosing Seal Member 16a Narrow portion 16b Gun guide edge 17 Direct contact seal member 18 Partition wall 19 Gun receiving portion 20 Contact type seal member

Claims (5)

[Claims] 1. A filler pipe, which is connected to a fuel tank, has a filler port into which a fuel gun is inserted, and a leveling pipe for regulating the amount of fuel in the fuel tank is communicated near the filler port, A gun receiving portion that abuts a tip of the refueling gun to be inserted into the refueling port and defines an insertion degree of the refueling gun is provided in the filler pipe, and fuel supplied from the refueling gun is in the filler pipe. A seal member is provided at a contact portion between the tip of the refueling gun and the gun receiving portion so as not to be scattered by
Filler pipe structure. 2. The gun receiver is provided at a position such that the fuel stop sensor of the fuel gun and the opening of the leveling pipe correspond to each other when the fuel gun and the gun receiver come into contact with each other. The filler pipe structure according to claim 1, wherein: 3. A sub-pipe having the gun receiving portion that abuts against a tip of the fuel gun is provided inside the filler pipe, and surrounds a contact portion between the gun receiving portion and the fuel gun. The filler pipe structure according to claim 1, wherein an enclosing type sealing member is provided at a tip portion of the sub pipe. 4. An upper edge of the surrounding seal member is folded back inward to form a gun guide edge for guiding the insertion of the refueling gun toward the gun receiving portion. Item 3. The filler pipe structure according to Item 3. 5. The filler pipe structure according to claim 3, wherein an inner end of the sub-pipe extends in the filler pipe in a direction toward the fuel tank.