JPH0645827U - Resin fuel tank filler structure - Google Patents

Abstract

(57) [Summary] [Purpose] Even if the resin fuel tank is placed in a flame and the resin portion melts, the filler metal fittings will not drop or the seal portion will not be defective. The purpose is to provide a filler structure of [Structure] If the resin filler member 12 and the filler metal fitting 13 insert-molded therein are configured, the resin filler member 12 of the filler metal fitting 13 is composed.
A filler formed by forming a plurality of through holes 14 on the inner peripheral wall of the inside of the body is used after the fuel tank has been molded.
A filler structure for a resin fuel tank, which is attached by welding to.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a filler for refueling a fuel tank, and more particularly to a filler structure for a resin fuel tank that is most suitable for application to a resin fuel tank of an automobile.

[0002]

[Prior art]

 Since this type of resin fuel tank for automobiles is installed at the center of the lower surface of the vehicle like passenger cars, a pipe for connection is attached to the resin fuel tank and the cap installed on the vehicle is attached to the pipe. A type that connects a filler that can be mounted via a hose, and a filler that is exposed to the outside and that can be fitted with a cap on a resin fuel tank, such as a truck, directly on the tank body. It is roughly divided into the type to be attached.

In any of the above cases, a connecting pipe or filler is attached to the resin fuel tank, but as shown in FIG. 5, a resin pipe 2 is attached to the body 1 of the resin fuel tank. However, as shown in FIGS. 6 and 9, the metal flanged pipe 3 is attached to the tank body 1 at the flange portion 3a as shown in FIGS. 6 and 9. Installed on the insert sheet 4 or the welding sheet 4a by screws, or as shown in FIG. 7, a metal filler or pipe 5 was attached to the body 1 of the resin fuel tank by welding. In addition, as shown in FIG. 8, the resin filler portion 6 is insert-molded when the resin fuel tank body 1 is molded, and the resin filler portion 6 is later made of metal. For example, the filler 7 is attached by caulking.

[0004]

[Problems to be solved by the device]

 However, when a fire resistance test was performed on the materials shown in FIGS. 7 and 8, the filler 5 and the pipe 7 dropped due to the dissolution of the resin portion. This was the same as that disclosed in Japanese Utility Model Laid-Open No. 62-130936. 6 and 9 were subjected to a drop test and a pressure resistance test, a loosening of the screwing resulted in a gap between the filler or the pipe 3 and the body 1 at the mounting flange portion 3a. There were various problems such as defective sealing.

[0005]

[Means for solving problems]

 The present invention was made in order to solve the above-mentioned conventional problems, and when placed in a flame, filler metal or the like may fall even if the resin portion melts, or a seal may occur. The purpose of the present invention is to provide a product that does not cause any defects, and the gist thereof is that it is composed of a resin filler member and a filler metal fitting insert-molded therein, and A filler structure of a resin fuel tank is characterized in that a plurality of through holes are formed in a peripheral wall of a filler member made of a resin, and the filler is attached to a body of the tank by welding after molding the fuel tank.

[0006]

【Example】

 Hereinafter, the present invention will be described in detail with reference to the embodiments shown in FIGS. 1 is a perspective view of a resin fuel tank with a filler pipe for connection with a hose attached, FIG. 2 is a sectional view taken along line II-II of FIG. 1, and FIG. 3 is a resin fuel tank with a filler pipe. FIG. 4 is a plan view of the attached state, and FIG. 4 is a sectional view taken along line IV-IV of FIG.

In FIGS. 1 and 2, reference numeral 10 denotes a body of a resin fuel tank, and a filler pipe 11 for connecting a filler installed on a vehicle and a hose is attached to the top of a body 10 of the tank. ing. As shown in FIG. 2, the filler pipe 11 is composed of a resin filler member 12 having a flange 12A at its lower end, and a metal pipe 13 integrated therein by insert molding. The upper outer peripheral portion 13A of the metal pipe 13 is exposed from the upper end of the resin filler member 12 and is connected to one end of a hose (not shown) by fitting in the upper outer peripheral portion 13A.

Reference numeral 14 is a through hole formed in the side wall of the metal pipe 13, and a plurality of through holes are formed over the entire circumference. The through hole 14 is filled with resin when the resin filler member 12 is molded. By doing so, the inside and outside of the metal pipe 13 are joined to form an integrated structure, and the metal pipe 13 is prevented from falling even if the resin filler member 12 is melted in the event of a fire. . Reference numeral 15 is a joint portion between the filler pipe 11 and the body 10 of the resin fuel tank, and the peripheral upper surface of the fuel injection port 16 formed in the body 10 of the tank and the lower surface of the flange 12A of the resin filler member 12 are attached by welding. Has been done.

FIGS. 3 and 4 show another embodiment of the present invention, in which a filler 17 having a shape capable of being fitted with a cap is attached to the top of the body 10 of the resin fuel tank. As shown in FIG. 4, the filler 17 is composed of a resin filler member 18 having a flange 18A at its lower end, and a metal filler metal member 19 integrated therein by insert molding. The upper end 19A of the metal filler fitting 19 extends from the upper end of the resin filler member 18, and a cap (not shown) is attached to the upper end 19A.

Reference numeral 19 B denotes an outer flange portion formed at the lower end peripheral edge of the filler metal fitting 19. The outer flange portion 19 B is engaged with the resin at the time of molding the resin filler member 18, particularly the filler metal fitting 19 of the filler metal fitting 19. The structural strength in the pull-out direction is increased. Reference numeral 20 denotes a joint portion between the filler 17 and the body 10 of the resin fuel tank, and the peripheral upper surface of the fuel injection port 16 formed in the body 10 and the lower surface of the flange 18A of the resin filler member 18 are attached by welding.

[0011]

[Effect of device]

 As described above, the filler structure of the resin fuel tank according to the present invention is configured by the resin filler member and the insert-molded filler metal fitting inside the filler metal member. Since the filler is formed by forming a plurality of through holes on the peripheral wall by welding to the tank body after the fuel tank is molded, the filler metal fitting is inside the resin filler member and has an integral structure. Therefore, even if the resin filler member is melted, the filler metal fitting does not drop. Further, since the filler is attached to the tank body by welding the resin filler member, it is possible to reduce the number of parts and, at the same time, it is possible to eliminate the occurrence of defective sealing.

[Brief description of drawings]

FIG. 1 is a perspective view showing a state where a filler pipe for connection is attached to a resin fuel tank.

FIG. 2 is a sectional view taken along line II-II in FIG.

FIG. 3 is a plan view of a resin fuel tank with a filler attached thereto.

4 is a sectional view taken along line IV-IV in FIG.

FIG. 5 is a perspective view and a cross-sectional view of a conventional resin fuel tank equipped with a conventional resin connecting pipe.

FIG. 6 is a perspective view and a cross-sectional view of a conventional resin fuel tank equipped with a metal pipe.

FIG. 7 is a perspective view and a cross-sectional view of a conventional resin fuel tank equipped with a metal filler.

FIG. 8 is a perspective view and a cross-sectional view of a conventional resin fuel tank equipped with a metallic filler.

FIG. 9 is a perspective view and a cross-sectional view of a conventional resin fuel tank equipped with a metal pipe.

[Explanation of symbols]

 10 Resin Fuel Tank Body 11 Filler Pipe 12 Resin Filler Member 13 Metal Pipe 14 Through Hole 15 Joining Part 16 Fuel Inlet 17 Filler 18 Resin Filler Member 19 Metal Filler Member 19B Outer Flange 20 Joining Part

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Junichi Kasai, No. 8 earthenware shelf in Fujisawa City, Kanagawa Prefecture Isuzu Motors Co., Ltd. Fujisawa Plant (72) Inventor Masakatsu Kuramoto 3-25-1, Tonomachi, Kawasaki-ku, Kanagawa Prefecture Isuzu Automobile Co., Ltd. Kawasaki Plant (72) Inventor Mikio Nemoto 3 Chikusaigan, Ichihara-shi, Chiba Mitsui Oil Chemicals Co., Ltd. Chiba Plant (72) Inventor Shumi 3-5 Fujisaki, Kawasaki-ku, Kawasaki-shi, Kanagawa No. 1 in Tokyo Radiator Manufacturing Co., Ltd. (72) Hideki Yamaji, 3-5 Fujisaki, Kawasaki-ku, Kawasaki City, Kanagawa Prefecture No. 1 in Tokyo Radiator Manufacturing Co., Ltd. (72) Akihiro Takahara, 3-chome, Fujisaki, Kawasaki-ku, Kawasaki City, Kanagawa Prefecture No. 5-1 Inside Tokyo Radiator Manufacturing Co., Ltd.

Claims (1)

[Scope of utility model registration request] 1. A filler comprising a resin filler member and a filler metal fitting insert-molded therein, and further comprising a plurality of through holes formed in a peripheral wall of the filler metal fitting in the resin filler member. Is attached to the body of the fuel tank by welding after molding the fuel tank.