JPH0611210Y2 - Fuel inlet structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a structure of a fuel injection port provided in an opening of a vehicle body for injecting fuel into a fuel tank of an automobile, for example.

[Conventional technology]

Conventionally, the structure of the fuel injection port to the fuel tank of automobiles is
As shown in FIG. 3, the fuel inlet pipe 10
At the end 110 of the inlet pipe extension 4
The fuel inlet pipe cover 20 having a diameter larger than that of the fuel inlet pipe 10 is fixed to each fixing portion S3, S4, S5 by brazing or welding, and the inlet pipe extension 40 Fuel cap 8 on the inner peripheral side of
The interference 60 for fitting 0 is fixed to the fixing portion S6 around the entire circumference by brazing or welding.

Further, the lip portion 910 of the fuel inlet shield 90 fixed to the vehicle body side is arranged so as to come into contact with the outer periphery of the fuel inlet pipe cover 20 so that these are so-called protruding in the vehicle body opening portion 30. A fuel injection port portion of the vehicle body opening portion 30 is configured.

The assembling direction when assembling the fuel inlet pipe 10 to the vehicle body opening 30 is the arrow A direction, and at the time of this assembling, the lip portion 910 of the fuel inlet shield 90 and the end seal portion 610 of the interferance 60.
The outer diameter B of the large-diameter fuel inlet pipe cover 20 is set to be larger than or equal to the diameter C of the end seal portion 610 of the interferance 60, that is, in order to be able to assemble so that they do not interfere with each other. It is necessary that outer diameter B ≧ diameter C.

Therefore, the entire circumference of the fuel inlet pipe cover 20 formed to have a large diameter is fixed to the inlet pipe extension 40 at the fixing portion S3 by brazing or welding as described above, and is configured (fixed) in this way. , Large diameter fuel inlet pipe cover 20
A space 70 is created between the inlet pipe extension 40 and the inlet pipe extension 40, and plating or paint is unlikely to adhere to the space 70, which may cause rusting. To prevent this, as described above, The fuel inlet pipe cover 20 is fixed to the inlet pipe extension 40 by brazing or welding around the entire circumference thereof (fixing portions S3, S4, S5), thereby forming the space 7
It is designed to seal 0 to prevent rust.

Incidentally, as a conventional technique showing the structure of the fuel injection port portion in which the large diameter filler neck contact plate (corresponding to the fuel inlet pipe cover) is fixed to the end portion of the fuel inlet pipe as described above, for example, the actual opening 58 -683
There is an open publication No. 18 (Japanese Utility Model Application No. 56-161868).

[Problems to be solved by the invention]

However, in the case of the fuel inlet port structure shown in FIG. 3, the space 70 between the fuel inlet pipe cover 20 and the inlet pipe extension 40 is sealed in order to prevent rust from the fuel inlet port portion. It is necessary to interpose 40, and the number of parts increases, and it is necessary to braze or weld at the fixing portions S3, S4, and S5 over the entire circumference to fix the parts, and in combination with the increase in the number of parts, Since the number of sticking parts by sticking or welding increases, the number of work steps and steps for sticking increases.

Further, since the fuel inlet pipe cover 20 and the inlet pipe extension 40 are fixed at the fixing portion S5, when the fuel cap 80 is removed to inject fuel, the fixing portion S5 is fixed.
Is noticeable, which reduces the appearance.

Therefore, the purpose of the present invention is to make it possible to deposit plating or paint between the respective members constituting the fuel injection port (near the fixed portion) without increasing the number of parts, the number of work steps, and the process. This is to prevent rusting from the inlet and improve the appearance around the fuel inlet.

[Means for solving problems]

Therefore, the present invention solves the above-mentioned problems by fixing a bead-shaped fixing portion on the fuel inlet pipe cover to fix the fuel inlet pipe to the fuel inlet pipe, and fixing the portion other than the fixing portion without fixing the fuel inlet pipe cover. The problem is to be solved by forming a gap between the fuel inlet pipe and the fuel inlet pipe.

More specifically, referring to FIG. 1, the fuel inlet pipe cover 2 is fixed so as to wrap the outer periphery of the end portion 11 of the fuel inlet pipe 1 in an annular shape, and the end portion 11 of the fuel inlet pipe 1 is fixed.
However, in the fuel injection port structure provided in the vehicle body opening 3, the fuel inlet pipe cover 2 is
A fixing portion 4 formed by partially recessing in a bead shape,
The fixing portion 4 is fixed to the outer periphery of the end portion 11 of the fuel inlet pipe 1, and the portions other than the fixing portion 4 are located between the fuel inlet pipe 1 and the fuel inlet pipe 1 in a direction parallel to the axis of the fuel inlet pipe 1. A gap 5 is formed which extends and communicates with the external space on the end 11 side of the fuel inlet pipe 1.

[Action]

According to the above means, the fixing portion 4 formed by partially recessing the fuel inlet pipe cover 2 in the circumferential direction in a bead shape is brazed or welded to the outer peripheral surface of the fuel inlet pipe. It can be directly fixed to the inlet pipe 1, and parts other than the fixed part S1 are not fixed and are separated from each other so as to penetrate in a direction parallel to the axis of the fuel inlet pipe, and the end side of the fuel inlet pipe. Since it is possible to form a gap 5 communicating with the external space of the fuel cell, the plating or paint is attached (turned in) into the space 7 between the fuel inlet pipe cover 2, the fuel inlet pipe 1 and the interface 6 from this gap 5. )
Therefore, it is possible to reliably prevent rusting due to insufficient adhesion of plating or paint.

Also, since rust can be prevented in this way,
Since it is not necessary to seal the space 7 (gap 5) and it is not necessary to interpose an inlet pipe extension or the like, it is possible to reduce the number of fixed parts (two positions S1 and S2). Working time of
The number of steps can be reduced.

Further, since the inlet pipe extension and the like are not fixed by interposition, there is no fixed portion at the fuel injection port. Therefore, even when the fuel cap 8 is removed, the fixed portion S1 of each member 1, 2, 4, 6 is fixed. , S2 are not noticeable at all, and the appearance of the fuel injection port can be improved.

〔Example〕

An embodiment of the present invention will be described below with reference to the accompanying drawings.

FIGS. 1 and 2 show an embodiment of the present invention. FIG. 1 is a schematic sectional view of a fuel injection port portion arranged in an opening of a vehicle body, and FIG. 2 shows a fuel injection port portion. It is a perspective view which shows the fixed state of the fuel inlet pipe and the fuel inlet pipe cover which comprise.

Then, as shown in FIG. 1, a fuel inlet pipe cover 2 is concentrically attached in the vicinity of the outer periphery of the end 11 of the cylindrical fuel inlet pipe 1, and at the inner peripheral side of the fuel inlet pipe 1,
The interface 6 for fitting the fuel cap 8 is provided at the end 11 of the fuel inlet pipe 1.
Fixed on all circumferences by brazing or welding (S
2) Has been done.

Further, the lip portion 91 of the fuel inlet shield 9 fixed to the quarter panel 31 and the wheel house outer panel 32 which form the vehicle body is brought into contact with the outer periphery of the fuel inlet pipe cover 2 to form a seal. Is disposed in the vehicle body opening 3 to form a fuel injection port.

A fuel injection port structure configured as described above, comprising:
As shown in FIG. 2 and FIG. 2, the large diameter fuel inlet pipe cover 2 is directly fixed to the fuel inlet pipe 1 by brazing or welding, and the fixing portion S1 is entirely Instead of circumferentially, the fuel inlet pipe cover 2 is partially recessed in a bead shape in the circumferential direction to form a fixing portion 4, and the fixing portion 4 and the fuel inlet pipe 1 are formed. The end 11 and the vicinity thereof are fixed by brazing or welding (S1).

In addition, such a fuel inlet pipe cover 2
Other than the fixing portion S1 to the fuel inlet pipe 1 by the partial fixing portion 4 in the circumferential direction of
It is not in the shape of a bead (it is not fixed, of course), and penetrates between the fuel inlet pipe 1 and the fuel inlet pipe cover 2 in a direction parallel to the axis of the fuel inlet pipe. , A gap 5 of about 3 mm communicating with the external space is formed.

Further, as described above, the end portion 11 of the fuel inlet pipe 1 to which the fuel inlet pipe cover 2 is fixed in this manner has the interface 6 fixed thereto by brazing or welding on the entire circumference thereof (S2). And a reliable seal is formed, and the members 1, 2, 4, 6 are fixed (S1, S2) in this manner, whereby the fuel inlet pipe 1, the fuel inlet pipe cover 2, and the interface are provided. A space 7 communicating with each member of the lance 6 through the gap 5 is formed.

The fixed portion S2 between the end portion 11 of the fuel inlet pipe 1 and the interface 6 is covered by the inner side of the large-diameter fuel inlet pipe cover 2 and is not visible from the outside. At the same time, the fixing portion S1 between the vicinity of the end 11 of the fuel inlet pipe 1 and the fixing portion 4 of the fuel inlet pipe cover 2 is also on the inner side of the vehicle body opening 3 and is not visible from the outside. It is configured.

Thus, the space 7 surrounded by the large-diameter fuel inlet pipe cover 2, the fuel inlet pipe 1, and the interface 6 is formed in a portion other than the fixing portion S1 by the fixing portion 4 in the fuel inlet pipe cover 2. The gap 5 communicates with the external space on the end side of the fuel inlet pipe, and since the gap 5 communicates with the outside in the direction parallel to the axis of the fuel inlet pipe, it can be used in a plating tank or an electrodeposition coating tank. When soaked, the liquid does not stay and air pockets are not formed. Therefore, plating or paint can be adhered to the space 7 from the gap 5, that is, it can be swirled. Can be reliably prevented.

In addition, since the rusting from the space 7 can be prevented in this manner, it is not necessary to seal the space 70 unlike the configuration of the conventional technique shown in FIG. 3, and the inlet pipe extension 40 and the like are thereby interposed. Since there is no need to fix it, the number of parts can be reduced,
Moreover, due to such a reduction in the number of parts, each member 1,
Since it is possible to reduce the number of fixing portions of 2, 4, 6 (only two locations of S1 and S2), it is possible to reduce the number of work steps and steps for fixing each member.

Further, since the inlet pipe extension and the like are not fixed by interposition and it is not necessary to have a fixing structure that seals the space, the fuel injection port portion provided in the vehicle body opening 3 is not fixed to the outside. There is no fixed portion S1 or S2 of each member in the exposed portion, that is, the fixed portion S1 between the end portion 11 of the fuel inlet pipe 1 and the fixed portion 4 of the fuel inlet pipe cover 2 is the vehicle body opening 3 as described above. It is located on the inner side,
Further, since the fixing portion S2 between the end portion 11 of the fuel inlet pipe 1 and the interface 6 is located inside the large-diameter fuel inlet pipe cover 2 (in the space 7), the fuel cap 8 is removed. Even if it is, the fixed part of each member is not noticeable at all, and the appearance around the fuel injection port is not deteriorated at all. Since the fixing portions S1 and S2 are not visible, the appearance failure due to rusting from the fixing portions S1 and S2 does not occur at all.

[Effect of device]

As described above, the present invention fixes the fuel inlet pipe cover to the fuel inlet pipe through the fixing portion formed by partially recessing the fuel inlet pipe cover, and does not fix other portions other than this fixing portion, and the fuel inlet pipe is not fixed. A gap is formed between the cover and the fuel inlet pipe in a direction parallel to the axis of the fuel inlet pipe to form a gap communicating with an external space, and the fuel injection port is formed through this gap. Since the plating or paint can be attached (turned in) into the space between the fuel inlet pipe cover and the fuel inlet pipe and the interface (near the fixed part of each member), these parts (space) ), It is possible to reliably prevent rust from It is not necessary to fix a separate member such as an inlet pipe extension to seal the space to prevent the fuel inlet pipe cover from being directly fixed to the fuel inlet pipe, and the fixing of each member Since the number of parts can be reduced, it is possible to reduce the number of parts, the number of work steps for fixing and the number of steps.

Further, since there is no fixed portion of each member at the exposed portion of the fuel injection port provided at the vehicle body opening, the fixed portion is not noticeable even when the fuel cap is removed. Since it does not exist at all, the appearance around the fuel injection port can be significantly improved, and the appearance failure due to rusting from the fixed portion does not occur at all.

[Brief description of drawings]

1 and 2 show an embodiment of the present invention. FIG. 1 is a schematic cross-sectional view of a fuel injection port portion arranged at an opening of a vehicle body, and FIG. 2 is a fuel inlet pipe cover. FIG. 3 is a perspective view showing a fixed state to the fuel inlet pipe, and FIG. 3 is a sectional view corresponding to FIG. 1 showing a conventional example. 1 …… Fuel inlet pipe 11 …… End 2 …… Fuel inlet pipe cover 3 …… Vehicle opening 4 …… Fixed portion 5 …… Gap

Claims (1)

[Scope of utility model registration request] 1. A fuel inlet port structure in which a fuel inlet pipe cover is fixed so as to wrap the outer periphery of an end portion of a fuel inlet pipe in an annular shape, and the end portion of the fuel inlet pipe is arranged at an opening of a vehicle body. The fuel inlet pipe cover includes a fixing portion formed by partially recessing in a bead shape. The fixing portion is fixed to an outer circumference of an end portion of the fuel inlet pipe, and a portion other than the fixing portion is the fuel. It is arranged so as to extend between the inlet pipe and a direction parallel to the axis of the fuel inlet pipe so as to form a gap communicating with the external space on the end side of the fuel inlet pipe. And fuel inlet structure.