JPS5867521A - Structure of vehicle's fuel filler - Google Patents

Abstract

PURPOSE:To reduce the number of parts and simplify the assembly work by integrating a fuel filler pipe and a filler base with resin. CONSTITUTION:A fuel filler pipe C is made of high dense polyethylene or the similar and has a cap 5 squeezed at the end thereof. At the trunk part C1 of the fuel filler pipe C a vessel-like filler base 20, molded from the same material as that of the fuel filler pipe C, is integrated therewith. A groove 22, a rupturable means, is formed in the back face part 21 of the filler base 20. When the vehicle collides to deform the filler base 20, the groove 22 is ruptured whereby the resultant separation of the filler base 20 from the fuel filler pipe C may protect the fuel filler pipe C from damage.

Description

[Detailed description of the invention] The present invention relates to a fuel injection port structure for a vehicle.

In recent years, many fuel injection pipes connecting a fuel tank and a fuel injection port of a vehicle are made of resin from the viewpoint of weight reduction and rust prevention.

Incidentally, as a mounting structure for a fuel injection pipe formed of resin in this manner, the structures shown in FIGS. 2 and 3 are conventionally known.

#! In the structure shown in Fig. 2, a metal 7-lung 10 base is fixed to the body of a fuel injection pipe C made of resin, and a bowl-shaped filler made of metal is attached to the other end of the 7-lung 1. The bottom of the base 2 was fixed with screws 3, and the upper edge of the filler paste 2 was welded and fixed to the opening periphery 7 flange 4a of a car body outer plate 4 such as a 7 ender, thereby forming a fuel inlet part. . Note that 5 in the figure indicates a cap that seals the opening at the tip of the fuel injection WC.

In addition, in the structure shown in FIG. 3, a metal 7-lung 10 base is fixed to the upper end of the body of the fuel injection pipe C formed of resin, and a bowl-shaped resin material is attached to the other end of the 7-lung 1. The bottom of the filler paste formed on the filler base is fixed with screws 3, and the upper edge of the filler base is attached to the outer panel 4 of the vehicle body such as an ender.
A fuel inlet portion was formed by fixing screws 6 to the opening peripheral edge 7 of the flange 4a. Note that 5 in the figure indicates a cap that seals the opening at the tip of the fuel injection pipe C.

However, in the former structure, the seven flange 1 other than the fuel injection pipe C, the filler base 2, and the vehicle body outer plate 4 are all made of metal, so that the vehicle crashes If the vehicle body outer plate 4 etc. is deformed due to
The fuel injection pipe C may be damaged due to deformation of the filler base 2, etc., causing fuel to flow out and cause a vehicle fire. The flange 1 and the resin-formed filler base must be fixed with screws 3.6, which requires a large number of fastening parts and the installation work is complicated. The problem was that the assembly required many man-hours and workability was poor.

The present invention was devised in view of the current situation, and its purpose is to reduce the number of parts, simplify assembly work, and prevent damage to the fuel injection pipe in the event of a vehicle collision. What is the structure of the fuel inlet? This is what we are trying to provide.

In order to achieve this object, the present invention includes a fuel inlet opened in the outer panel of the vehicle body, a filler base attached to the outer panel of the vehicle body around the periphery of the fuel inlet, and a bottom portion of the filler base. In the fuel injection port structure of a vehicle, which is composed of a fuel injection pipe arranged in the fuel tank and communicating with the fuel tank, the fuel injection pipe and the filler base are integrally formed with resin, and the bottom of the filler base is connected to the fuel injection port of the vehicle. Easy-to-break parts such as notched grooves, perforations, and long holes where the fuel injection pipe separates from the filler base when a load greater than the set value is applied to the filler base in the event of a collision (i.e., the fuel injection pipe breaks when a load greater than the set value is applied to the filler base) The purpose is to achieve the above object by forming a part).

Hereinafter, the present invention will be described in detail based on embodiments shown in the accompanying drawings.

FIG. 4 shows the structure of a fuel injection port according to a first embodiment of the present invention. In this embodiment, the fuel injection pipe C is made of, for example, high-density ethylene, and a cap 5 is press-fitted into the end of the fuel injection pipe C.

A bowl-shaped filler base 20 is formed of the same material as the fuel injection tube C and is integrally formed with the fuel injection tube C, and is formed in the body C8 of the fuel injection tube C, and this filler paste is trapped. A groove 22 as an easily breakable part is formed in the lower surface part 21 of. This groove η serves to prevent the fuel injection pipe C from being damaged by breakage of the groove η when the filler paste is deformed during a vehicle collision, causing the filler paste and the fuel injection pipe C to separate. In this way, the open end of the filler base 20 formed integrally with the fuel injection pipe C is fixed to the opening peripheral edge 7 flange 4a forming the fuel injection port of the vehicle body outer panel 4 by screws n.

Therefore, in this embodiment, since the fuel injection pipe C and the filler base are integrally formed, the number of parts can be reduced, and as a result, the assembly work can be greatly simplified.

FIG. 5 shows the structure of a fuel injection port for a vehicle according to a second embodiment of the present invention. In this embodiment, the difference from the first embodiment is that the filler lid can be opened and closed from the open end of the filler base via a thin resin hinge part 31, as shown by the imaginary line in FIG. It is located at the point where it is formed. In this case, the opening periphery 7 of the vehicle body outer panel 4
A part of the flange 4a has an end 32 on the side of the thin resin hinge part 31 of the puller lid that is attached to the vehicle body outer plate during opening/closing operation.
The recessed portion 4b is recessed so as not to collide with the
is configured to be hidden by the end portion 32 when the filler lid is closed, and other configurations and functions are completely the same as those of the first embodiment described above. Detailed explanation with sign? It is omitted here.

Therefore, in this embodiment, the fuel injection pipe 0, the filler base and the filler lid are integrally formed of the same material, and the filler lid is separately supported via a thin resin hinge part 31. Therefore, the number of parts can be further reduced by 2, and the assembly work can be greatly simplified.

In addition, in each of the above embodiments, the fuel injection pipe C and the filler base are different. Although an example has been described in which the fuel injection pipe C is formed integrally with a homogeneous resin, the present invention is not necessarily limited to this. For example, the fuel injection pipe C may be formed with a hard resin, and the filler paste 9 may be formed with a soft resin. .

Since the present invention has the above configuration, the number of parts can be reduced and assembly work can be made easy. Even if the filler base is damaged in a collision, the easily broken part is provided, so that
This has the effect that the fuel injection pipe will not be damaged.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of an automobile to which the present invention is applied;
Figure 1 and Figure 3 show the structure of the conventional fuel injection port, respectively.
FIG. 4 is a sectional view corresponding to line A-A, FIG. 4 is a sectional view corresponding to line A in FIG. FIG. 1 is a sectional view corresponding to FIG. 1A-AilJ showing the fuel injection port structure according to the present invention. 4... Vehicle body outer plate 4a... Fuel inlet periphery (flange) 2.20...
Filler base η...Easy breakage part C...Fuel injection pipe Patent applicant Nissan Motor Co., Ltd. Figure 1□, j □□□□□--One Figure 2 Figure 3

Claims (1)

[Claims] A fuel injection port opened in the outer panel of the vehicle body, a filler base attached to the outer panel of the vehicle body around the edge of the fuel injection port, and a fuel injection pipe arranged at the bottom of the filler space and communicating with the fuel tank. In the fuel injection port structure of the vehicle configured, the fuel injection pipe and the filler paste are integrally formed with resin, and the bottom of the filler base is provided with a load that exceeds a set value on the filler base due to a load such as a vehicle collision load. 1. A fuel injection port structure for a vehicle, characterized in that an easily breakable part is formed to separate a fuel injection pipe from a filler paste when a filler paste is applied.