JPH0625755Y2 - Ground structure of resin inlet pipe - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a ground structure for a resin inlet pipe,
Without using a dedicated grounding wire for grounding, a buzzer tube that almost exclusively attaches to the inlet pipe and discharges the fuel gas filling the fuel tank through the inside of the fuel inlet of the inlet pipe is composed of a conductive hose Due to the special structure, the grounding of the fuel tank is used for easy grounding.

(Prior Art) There are various types of resin inlet pipes that can be molded independently or integrally with a fuel tank. A metal retainer is firmly fitted in the inlet to reinforce and screw caps. In the configuration in which the screw is formed in accordance with the screwing in order to screw with, the retainer needs to be grounded because static electricity is accumulated in the retainer. However, since the inlet pipe is not electrically conductive and cannot be grounded by the pipe, various grounding systems have been proposed. FIG. 4 shows an example of a structure in which a fuel tank a and an inlet pipe p are integrally molded of a resin material. A metal plate c for sealing a working hole b is attached to the fuel tank a,
A ground wire d is connected to the outer surface of the plate c to be grounded, and a ground wire g, which is connected to the retainer f fixed to the inlet e of the inlet pipe p by brazing, is provided inside the inlet pipe p and the fuel tank a. It is loosened and passed through, and then attached to the inner surface of the metal plate c.

This structure inevitably suffers from the drawback of requiring a lot of man-hours for grounding.

(Problems to be Solved by the Present Invention, Purpose of the Present Invention) The conventional ground structure is not limited to the one illustrated in FIG. 4, but there are drawbacks such as a complicated structure or an increase in man-hours. is there. The present invention is almost inevitably accompanied by the special constitution in which the buzzer tube for discharging the fuel gas filled in the fuel tank at the time of fuel injection through the inside of the fuel injection port of the inlet pipe is constituted by the conductive hose. It is an object of the present invention to solve the problems other than the above.

(Means for Solving Problems) In the ground structure of the resin inlet pipe of the present invention, the inner end is connected to the fuel tank equipped with the ground, and the metal retainer is fixedly fitted in the fuel injection port at the outer end. In the resin-made inlet pipe, the blister tube for inserting and connecting the inner end into the fuel tank and the outer end is connected to the inlet pipe is constituted by a conductive hose made of rubber or resin, and the outer end of the hose is connected to the metal retainer. It is characterized in that it is electrically connected and the inner end is electrically connected to the ground of the fuel tank, which has the advantage of reducing the number of steps for grounding.

(Embodiment) FIGS. 1 and 2 of the accompanying drawings show a first embodiment of the present invention, and FIG. 3 shows a second embodiment.

In FIGS. 1 and 2, 1 is a fuel tank and 2 is an inlet pipe, both of which are integrally molded using a synthetic resin as a material.

In some cases, the fuel tank and the inlet pipe may be molded and connected to each other by using a resin material.

A metal retainer 4 having a smaller inner diameter of the lower port 5 is fitted to the fuel inlet 3 at the outer end of the inlet pipe 2, and the support cylinder 6 is fixedly fitted to the retainer 4. The lower port 5 is normally closed from below on the shaft 7 that is passed over the support cylinder 6, and one end of a lever 8 that is removed when a fuel supply gun having an inner diameter of the lower port 5 or less is inserted is fitted. The lever 8 is provided with a spring (not shown) that acts to close the lower opening 5.

Reference numeral 9 denotes a conductive rubber or synthetic resin blister tube, which is a bent resin connector 10 in which a mounting flange 11 is provided at an outer end and an inner end is engaged with an inner surface of the blister tube 9.
And a metal pipe 12 which fits on the inner circumference of the bent resin connector 10 and exposes both ends of which one end is caught in the blister tube 9 and the other end of which is passed through the through hole 2a provided in the inlet pipe 2 A tongue piece 6a is provided on the support cylinder 6 so as to come into contact with the center of the metal pipe 12 by cutting and raising, and a mounting flange 11 of the bent resin connector 10 is attached to the inlet pipe 2 with an adhesive or the like to form a metal retainer 4. Electrically connected to the conductive blizzer tube 9.

At the other end of the blizzer tube 9, bend the metal pipe 1
Connect 3

The fuel tank 1 is provided with a plate 16 for closing the working hole 15 as is well known, and an earth 17 is provided on the outer surface of the plate as well known, and the metal pipe 1 described above is attached to the plate 16.
Fix through 3.

As for the electrical connection between the metal retainer 4 and the blister tube 9, the ground wire 21 is connected to the support cylinder 6 as in the second embodiment of FIG. It can also be fixed to the inner surface. In this case, the metal pipe 12 shown in FIG. 2 is not used.

(Operation) As described above, the ground structure of the resin inlet pipe of the present invention has the inner end connected to the fuel tank 1 having the ground 17, and the metal retainer 4 inside the fuel inlet 3 at the outer end. In the resin-made inlet pipe 2 in which is fixedly fitted, an inner end is inserted into the fuel tank 1 and an outer end is inserted into and connected to the inlet pipe 2, and a blister tube 9 is formed of a conductive hose made of rubber or resin. While electrically connecting the outer end of the metal pipe 12 inserted and connected to the outer end of the hose to the metal retainer 4,
The inner end is electrically connected to the earth 17 of the fuel tank 1, the electric wire required for earthing is not used, and the earth 17 that is always provided on the fuel tank 1 can be used for earthing, so wiring is simplified. Can be assembled easily.

(Effects) The present invention has the configuration and operation as clarified above, and uses the buzzer tube 9 which is almost indispensable for the inlet pipe 2 as a conductive hose and uses the hose as a ground material and the fuel tank 1. Inlet pipe 2 that can be easily structured and assembled by incorporating a ground 17 provided without exception in a part of the ground of the present invention.
There is an effect that the earth structure can be obtained.

[Brief description of drawings]

1 and 2 of the accompanying drawings show a first embodiment of the present invention, FIG. 3 shows a second embodiment, and FIG.
FIG. 2 is an enlarged vertical sectional view of the inlet of the inlet pipe 2,
FIG. 3 is an enlarged vertical sectional view at the same position as in FIG. Fourth
The figure is a vertical sectional view of a conventional example. 1 → fuel tank, 2 → inlet pipe 2a → through hole, 3 → fuel inlet 4 → metal retainer 5 → lower port, 6 → support cylinder 6a → tongue piece, 7 → spindle, 8 → lever 9 → blizzer tube 10 → resin connector 11 → mounting collar, 12 → metal pipe 13 → bent metal pipe 15 → work hole, 16 → plate, 17 → ground 21 → ground wire

Claims (1)

[Scope of utility model registration request] 1. A resin inlet pipe having an inner end connected to a fuel tank equipped with a ground and a metal retainer fixedly fitted in a fuel injection port at the outer end, the inner end being inserted into the fuel tank and the outer end being inserted. The blister tube for inserting and connecting the end to the inlet pipe is composed of a conductive hose made of rubber or resin, and the outer end of the hose is electrically connected to the metal retainer, and the inner end is electrically connected to the ground of the fuel tank. The ground structure of the resin inlet pipe is characterized by being connected to.