JPH0728461Y2 - Resin fuel filler pipe - Google Patents

Description

[Detailed Description of the Invention] (Industrial field of application) The present invention relates to a resin fuel filler pipe which constitutes an oiling pipe of a fuel tank mounted on an automobile, and a metal retainer fitted and fixed to an oiling port is charged. Unlike the conventional structure, static electricity is grounded by a mounting piece that is attached to a chassis or body without using a ground wire.

(Prior Art) A conventional fuel filler pipe that constitutes a lubrication pipe for a fuel tank mounted on an automobile is bent into a pipe a shape to avoid interference with a floor, side members, tires, etc., as shown in FIG. There are many parts, and it is easier to form the breather tube b, which constitutes the gas venting of the upper layer of the fuel tank, integrally with the fuel filler pipe a because it is easy to assemble into the chassis or body because of the resin. There are many things to create. However, since a cap is provided by screwing or the like at the oil injection port into which the oil injection gun is inserted, a metal retainer c is fitted and reinforced as is well known. However, the mating partner is formed of an electrically non-conductive resin material, and since static electricity charged in the retainer c cannot be grounded, one end of the ground wire d is connected to the metal retainer c, and a fuel filler pipe or the like is attached and supported. Although the other end of the earth wire d is connected to the chassis or body of the automobile, there is a drawback in that the number of mounting steps is large.

(Problems to be solved by the invention, purpose of the invention) In view of the above, the present invention does not use the ground wire,
It is an object of the invention to solve the problem of mounting the fuel filler pipe a on the chassis or the body and enabling the metal retainer to be grounded completely automatically.

(Means for Solving the Problems) The present invention has been made in accordance with the above-mentioned object, and is a resin pipe in which a metal retainer is fitted and fixed to an oil inlet and a mounting piece to be attached to a chassis or a body is projected, The resin retainer pipe is characterized in that a part or all of the surface from the portion where the metal retainer is fitted to the mounting piece is continuously formed of a conductive resin material, and the earth circuit of the metal retainer is connected to the fuel filler pipe. There is an inventive step that can be automatically configured with the installation of the vehicle on the chassis or body.

A preferred embodiment of the present invention will be described below.

(Example) In the figure, reference numeral 1 denotes a resin fuel filler pipe connected to a fuel tank mounted on an automobile, and a breather tube 3 connected to an upper portion of the fuel tank by an integrally formed continuous piece 2 protruding to the outer periphery. The mounting piece 4 is integrally provided, the mounting piece 4 is projected from the tube, and the mounting hole 5 is formed in the mounting piece 4.

The fuel filler pipe 1 is supported by inserting bolts into a mounting hole 5 and a mounting hole (not shown) of an automobile chassis or body (not shown) and tightening it with a nut. At the rim of the inlet 6 of the fuel filler pipe 1,
The metal retainer 7 on which the hook portion 7a is hooked is fitted and fixed by caulking or the like.

The fuel filler pipe 1, the connecting piece 2, the breather tube 3 and the mounting piece 4 are molded from a hard resin material such as polyethylene resin, and the outer surface of the fuel filler pipe 1 as shown in the first embodiment of FIGS. A conductive resin layer 11 containing a carbon material or the like is continuously provided on the surface of the injection port 6, the surface of the breather tube 3 and the surface of the mounting piece 4.

The conductive resin layer 11 of this embodiment is practically made of resin material HDPE80-
Prepare by mixing 60% and carbon black 20-40%.
For example, the surface resistivity of a press-molded plate of a compound of 30% carbon black is 10 ² Ω, the volume resistivity is 10 ¹ Ω ・ cm,
For blow molded products, both surface resistivity and volume resistivity are
It is on the order of 10 ³ to 10 ⁵ Ω. Since the conductivity is determined by the amount of carbon, adjust the distance from the part where the metal retainer of the molded product is fitted to the mounting hole to 10 ⁹ Ω or less.

If the carbon black exceeds 40%, it becomes brittle and cannot be used. It is also possible to give conductivity by mixing an inorganic conductive filler in addition to carbon.

3 and 4 show a second embodiment, in which a fuel filler pipe 1, a connecting piece 2, a breather tube 3 are provided.
Also, molding the mounting piece 4 with a hard resin material such as a hard polyethylene resin is the same as in the first embodiment, but as shown in FIG. An adhesive resin layer 21 is provided as shown, and the layer 21
A conductive resin layer 22 containing the same carbon material as described in the embodiment of FIG. The adhesive resin layer 21, which is an intermediate layer, is not necessary if the above-described pipes 1 to 4 are formed of polyethylene resin or the like and the conductive resin layer 22 has an affinity with the pipes or the like.

(Function) The present invention has the configuration exemplified above, and when the attachment piece 4 of the fuel filler pipe 1 is attached to the chassis or body of the automobile, the conductive resin layer 11 ( The first embodiment) and 22 (second embodiment) are electrically connected to automatically configure the earth circuit of the metal retainer 7.

(Effect) The present invention is a resin pipe in which a metal retainer is fitted and fixed to a fuel injection port, and a mounting piece to be attached to a chassis or a body is projected, and a surface from the portion where the metal retainer 7 is fitted to the mounting piece 4 is Since part or all of the conductive resin material is continuously formed, the metal retainer 7 is automatically attached to the chassis or body by the conductive resin at the same time as the mounting piece 4 is mounted and supported on the chassis or body of the automobile. It is possible to ground and prevent static electricity from accumulating in the metal retainer 7. The work of connecting the ground wire to the metal retainer and the work of attaching the wire to the chassis or body together with the attachment piece 4 have been performed so far. There is an effect that the mounting man-hour can be simplified by omitting.

[Brief description of drawings]

1 to 4 attached show an embodiment of the present invention, FIG. 1 is a perspective view of the first embodiment, FIG. 2 is an enlarged sectional view taken along line AA of FIG. 1 of the same embodiment, and FIG. 2 is a perspective view of the second embodiment, FIG. 4 is an enlarged sectional view taken along line BB of FIG. 3 of the same embodiment, and FIG. 5 is a perspective view of a conventional example. 1 → Fuel filler pipe 2 → Connection piece, 3 → Breather tube 4 → Mounting piece, 5 → Mounting hole, 6 → Lubrication port 7 → Metal retainer 11 → Conductive resin layer, 21 → Adhesive resin layer 22 → Conductivity Resin layer

Claims (1)

[Scope of utility model registration request] 1. A resin pipe having a metal retainer fitted and fixed to an oil filling port and a mounting piece to be attached to a chassis or a body protruding from a part or all of the surface from the portion where the metal retainer is fitted to the mounting piece. A resin fuel filler pipe characterized by being continuously formed of a conductive resin material.