JP2605601Y2 - Fuel filler - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an opening formed by recessing a vehicle body for mounting a fuel inlet of a fuel tank of an automobile or the like, and a fuel filler comprising a fuel filler covering the opening. is there.

[0002]

2. Description of the Related Art In a fuel tank for storing fuel to be supplied to an engine in an automobile or the like, it is necessary to maintain a constant internal pressure so that fuel can be supplied in an appropriate state. For this reason, as shown in FIG.
Is closed by a screwed cap 2. The cap 2 is opened when a large amount of fuel vapor is generated due to an increase in the temperature of the fuel tank and the internal pressure of the fuel tank increases. A positive pressure valve 3 and a negative pressure valve 4 that opens when the internal pressure of the fuel tank becomes low.

[0003] A spring 6 keeps the positive pressure valve 3 in a normally closed state, and a spring 7 keeps the negative pressure valve 4 in a normally closed state. The cap seal 8 is provided in the cap 2 and seals the inlet 1 and the cap 2.

An orifice 5 is provided in the cap 2 and serves as an opening to the atmosphere when the positive pressure valve 3 or the negative pressure valve 4 is operated.

[0005] As shown in FIGS. 10 and 11, the fuel inlet 1 is held by an opening 9 formed by recessing the vehicle body 10, and is covered with a fuel filler lid 11 together with the cap 2. The lid 11 covers the entire opening 9 and is attached to the vehicle body by a hinge 12 so as to be openable and closable, and these constitute a fuel filler port of the vehicle body.

[0006]

However, in a conventional fuel filler, the lid 11 and the opening 9 of the vehicle body 10 are not sealed as shown in Japanese Utility Model Laid-Open No. 62-92924, for example. Dirt, dust, and the like enter the opening 9 holding the injection port 1, and directly adhere to the cap seal 8, the positive pressure valve 3, the negative pressure valve 4, and the sealing performance is reduced. When the sealing performance is reduced, the inside and the outside of the fuel tank are always in communication, and a large amount of fuel vapor, which is a harmful component, flows out to the atmosphere.

The present invention provides a fuel filler port that prevents a large amount of fuel vapor from leaking to the atmosphere by preventing intrusion of dust and the like and preventing deterioration of sealing performance.

[0008]

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and is directed to a fuel filler port which is formed by recessing a vehicle body to hold a fuel inlet of a fuel tank, and an opening. In the fuel filler port having a fuel filler lid attached to the vehicle body so as to cover the entire part and be openable and closable, a step is provided along the entire periphery of the opening,
A communication member for disposing a seal member between a step portion and the fuel filler lid to close a gap between the opening and the fuel filler lid, and further allows the opening to communicate with the outside when the fuel filler lid is closed A mouth is provided in the opening or the fuel filler lid. A filter can be attached to a communication port that communicates the opening with the outside.

[0009]

According to the above construction, the opening and the outside are shut off by the sealing member provided in the gap between the fuel filler lid and the step provided on the entire periphery of the opening for holding the fuel inlet. To prevent intrusion of dust and dirt into the opening. Further, it is possible to prevent dust, dirt, and the like from directly adhering to the positive pressure valve, the negative pressure valve, and the cap seal provided on the cap, and to prevent the fuel vapor from constantly leaking into the atmosphere.

Although the operation of the positive pressure valve and the negative pressure valve is hindered when the outside is blocked by the seal member, the normal operation is ensured by providing a communication port for communicating the opening with the outside. If a filter is attached to the communication port, intrusion of dust, dust and the like can be more reliably prevented.

[0011]

FIG. 1 shows an embodiment of a fuel filler port of the present invention.
This will be described with reference to FIGS.

The fuel inlet 1 is held by an opening 9 formed by recessing the vehicle body 10, and the cap 2 is screwed and closed. The cap 2 has the same positive pressure valve, negative pressure valve and orifice as in the prior art.

A fuel filler lid 11 covers the entire opening 9 and is attached to a vehicle body 10 via a hinge 12 so as to be openable and closable.

The seal member 14 is adhered to the peripheral edge of the rear surface of the lid 11. When the lid 11 is in the closed state, the seal member 14 is pressed against a step 91 provided on the entire peripheral edge of the opening 9 so that the lid 11 and the opening 13 are separated from each other. It is designed to close the gap.

The step 91 is provided with a recess 15 and the step 9
1 forms a portion separated from the seal member 14, and forms a communication port 92 between the opening 9 and the outside.

Next, the operation of the embodiment of the present invention will be described. When the fuel filler lid 11 is closed, the step 91 of the opening 9 holding the fuel inlet 1 is sealed by the seal member 14, and the opening 9 is sealed from the outside.

Accordingly, it is possible to prevent dust, dirt, and the like from entering the opening 9 and prevent the dirt, dust, and the like from directly adhering to the positive pressure valve, the negative pressure valve, and the cap seal provided in the cap 2. . Therefore, cap 2
Is prevented from lowering, and a situation in which fuel vapor always leaks does not occur. Also, when refueling,
It is possible to greatly reduce the possibility that foreign matter such as dust attached to the opening 9 and the cap 2 may enter the fuel tank.

When the pressure in the fuel tank increases, the positive pressure valve provided on the cap 2 opens, and when the pressure in the fuel tank decreases, the negative pressure valve opens to open the opening 9. And the fuel tank, and further communicate with the outside atmosphere through a communication port 92 formed of the recess 15 provided in the step portion 91. As a result, normal operation of the positive pressure valve and the negative pressure valve is ensured, and the inside of the fuel tank can be maintained at a constant pressure.

Another embodiment of the present invention is shown in FIGS. In the embodiment shown in FIG. 4, a filter 16 such as a sponge is attached to the recess 15 provided in the step portion 91 by an adhesive or the like so as to be a communication port 92 between the opening and the outside. By adhering the filter 16, when the positive pressure valve or the negative pressure valve is opened and the air flows in or out through the communication port 92, it is possible to prevent the accompanying intrusion of dust, dust and the like, so that the sealing property can be more reliably improved. It is possible to prevent the drop.

In the embodiment shown in FIGS. 5 and 6, communication between the opening 9 and the atmosphere is performed by a communication port 17 formed by projecting a part of the lid 11 outward.
As in the embodiment shown in FIG.
8 may be fixed by bonding or the like. In this case, the seal member is preferably fixed to the step of the opening.

The embodiment shown in FIGS. 7 and 8 is an example in which a communication port 19 for communicating the opening 9 with the atmosphere is provided in the opening 9.
The gas is introduced from the communication port 19 to the indoor air outlet through the filter 21 by the hose 20.

[0022]

As described above, according to the present invention, a step provided on the entire periphery of the opening for holding the fuel inlet, a seal member and an opening provided in a gap between the fuel filler lid and the step. A filter provided at a communication port that communicates with the outside shuts off the opening from the outside, thereby preventing entry of dirt, dust, and the like into the opening. Accordingly, dust and the like do not adhere to the positive pressure valve, the negative pressure valve, and the cap seal provided on the cap, and the sealing property can be improved, so that a large amount of fuel vapor, which is a harmful component, is prevented from leaking to the atmosphere. be able to.

Further, the dirt in the opening in the fuel filler is hardly stained, and the merchantability is improved. Further, it is possible to prevent a problem that dust or the like from the opening or the like enters the fuel tank at the time of refueling.

[0024]

[Brief description of the drawings]

FIG. 1 is a sectional view of a fuel filler port according to the present invention.

FIG. 2 is a perspective view of the fuel filler port with a fuel filler lid removed.

FIG. 3 is a cross-sectional view of the fuel supply port.

FIG. 4 is a perspective view showing an embodiment of a communication port of the refueling port.

FIG. 5 is a perspective view showing another embodiment of the fuel filler of the fuel filler port.

FIG. 6 is a sectional view taken along line TT of FIG. 5;

FIG. 7 is an explanatory view showing another embodiment of the communication port of the refueling port.

FIG. 8 is an enlarged perspective view showing the communication port of FIG. 7;

FIG. 9 is a sectional view showing a fuel inlet.

FIG. 10 is a cross-sectional view showing a conventional fuel filler port.

FIG. 11 is a longitudinal sectional view showing a conventional fuel filler port.

[0025]

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 fuel inlet 2 cap 9 opening 10 vehicle body 11 fuel filler lid 14 seal member 15 dent

Claims (2)

(57) [Scope of request for utility model registration] 1. A fuel filler port formed by depressing a vehicle body and having an opening for holding a fuel inlet of a fuel tank and a fuel filler lid which covers the entire opening and is attached to the vehicle body so as to be openable and closable. A step is provided around the entire periphery of the opening, and a seal member is arranged between the step and the fuel filler lid to close a gap between the opening and the fuel filler lid. A fuel filler opening, wherein a communication port for communicating the opening with the outside when the lid is closed is provided in the opening or the fuel filler lid. 2. The fuel filler port according to claim 1, wherein a filter is mounted on the communication port.