JP6994733B2 - Vehicle refueling pipe mounting structure - Google Patents

Description

The present invention relates to a vehicle refueling pipe mounting structure.

Conventionally, the fuel filler pipe of a vehicle is not only coated with a rust preventive coating to prevent rust, but also may be charged by the flow of fuel flowing inside the pipe to prevent ignition of the fuel due to spark discharge. It is common to provide a grounding point for this purpose.

For example, the fuel refueling pipe disclosed in Patent Document 1 has a rust-preventive coating on the surface thereof, and a non-painted portion is provided on a part of the surface in the middle thereof. .. A conductive tube containing carbon is wound around the portion corresponding to the unpainted portion on the surface of the fuel filler pipe so as to be in close contact with the portion. Then, by sandwiching and gripping the part of the fuel oil supply pipe around which the tube is wound with two conductive brackets, and fixing both brackets to the vehicle body with a grounding fixing bolt, the unpainted part, the conductive tube and the conductive tube The fuel refueling pipe is grounded to the vehicle body via each bracket to prevent charging.

Japanese Patent Application Laid-Open No. 2003-127676

However, the fuel refueling pipe of Patent Document 1 is a fuel refueling pipe whose surface is coated with rust-preventive coating at the time of production and when assembling to the vehicle body. By using warm air to blow the tube to heat shrink it, it is brought into close contact with the fuel oil supply pipe so as to cover the unpainted part, and then the fuel oil supply pipe is attached to the vehicle body using each bracket and the fixing bolt for grounding. You have to take steps such as installing. Therefore, a heat shrinkage process is required in addition to the painting process and the mounting process, and there is a problem that the number of work processes increases, the productivity decreases, and the cost increases.

The present invention has been made in view of such a point, and an object of the present invention is to provide a fuel pipe mounting structure for a vehicle, which can prevent charging of the fuel fuel pipe, has good productivity, and is low in cost. To provide.

In order to achieve the above object, in the present invention, an elastic body is interposed and fixed so as to cover the unpainted portion of the fuel refueling pipe between the fixture for fixing the fuel refueling pipe to the vehicle body and the fuel refueling pipe. It is characterized by providing the elastic body with a device that enables conductivity between the tool and the fuel filler pipe.

Specifically, the following solutions have been taken in the vehicle refueling pipe mounting structure in which a cylindrical metal fuel refueling pipe with a non-conductive coating on the surface is attached to the vehicle body using a fixture. ..

That is, in the first invention, the fixture is made of metal that grips the first grip body made of metal grounded on the vehicle body side and the fuel refueling pipe by sandwiching the first grip body from the radial direction. The surface of the fuel refueling pipe is provided with a second grip body and an elastic body disposed between the first grip body and the fuel refueling pipe in a compressed state and provided with a through hole penetrating in the compression direction. At the position corresponding to the elastic body, the unpainted first unpainted portion is provided so as to be covered with the elastic body, and at least at the position corresponding to the elastic body on the surface of the first grip body. Is provided with a second unpainted portion that has not been painted, and the second unpainted portion provides the through hole when the first grip body and the second grip body grip the fuel oil supply pipe. It is characterized in that it is configured to be directly pressed against the first unpainted portion via the above .

In the second invention, in the first invention, the first grip body is formed with an overhanging portion that overhangs the fuel supply pipe side, and the tip surface of the overhanging portion is covered with the second unpainted portion. It is characterized in that a portion is formed.

The third invention is a vehicle fuel pipe mounting structure for mounting a cylindrical metal fuel fuel pipe having a non-conductive coating on the surface to the vehicle body by using a fixture, wherein the fixture is described above. A first metal grip that is grounded to the vehicle body side, a second metal grip that grips the fuel filler pipe by sandwiching it from the first grip in the radial direction, the first grip and the fuel. It is arranged in a compressed state between the fuel filler pipe and has an elastic body provided with a conductive portion, and the position corresponding to the elastic body on the surface of the fuel fuel pipe is painted. The first unpainted portion is provided so as to be covered with the elastic body, and the unpainted second unpainted portion is provided at least at a position corresponding to the elastic body on the surface of the first grip body. When the first grip body and the second grip body grip the fuel oil supply pipe, the second unpainted portion indirectly presses against the first unpainted portion via the conductive portion. The first grip body is characterized in that an overhanging portion is formed on the fuel supply pipe side, and the second unpainted portion is formed on the tip surface of the overhanging portion. And.
In the fourth invention, in any one of the first to third inventions, a fitting recess into which the elastic body can be fitted is formed at a position corresponding to the elastic body of the first grip body. The second unpainted portion is characterized in that it is formed in the fitting recess.

In a fifth aspect of the invention, in the fourth aspect of the invention, when the first gripping body and the second gripping body grip the fuel refueling pipe, the first gripping body and the second gripping body are pressed against the fuel refueling pipe at the opening peripheral edge of the fitting recess. It is characterized in that an annular grip portion is provided.

In the first invention, the fuel oil supply pipe is formed on the surface of the first unpainted portion and the second grip body is the second.
Since it is directly grounded to the vehicle body by the unpainted portion without using an elastic body, ignition due to charging can be reliably prevented. Further, since the elastic body is in close contact with the outer peripheral portion of the first unpainted portion on the surface of the fuel refueling pipe in the circumferential direction, the corrosive medium such as water does not adhere to the first unpainted portion, so that fuel refueling is performed. It is possible to reliably prevent the pipe from rusting due to the first unpainted portion without the rust preventive coating. Further, when performing the assembly work of gripping the fuel refueling pipe with the first and second grips, it is only necessary to sandwich the elastic body between the first grip and the fuel refueling pipe, and it is only necessary to sandwich the elastic body between the first grip and the fuel refueling pipe. Since it is not necessary to increase the number of work processes, it is possible to construct a fuel pipe mounting structure for a vehicle with good productivity and low cost.

In the second invention, when the fuel oil supply pipe is gripped by the first and second grips, the contact pressure between the first unpainted portion and the second unpainted portion becomes high. Therefore, even if the fuel supply pipe is charged, static electricity can be reliably flowed to the vehicle body side.

In the fourth invention, when the fuel oil supply pipe is gripped by the first and second grips, the elastic body fits into the fitting recess, so that the position of the elastic body with respect to the first grip does not shift. Therefore, it becomes easy to sandwich the elastic body between the fuel oil supply pipe and the first grip body, and the time required for attaching the fuel oil supply pipe to the vehicle body can be shortened.

In the fifth invention, the contact area between the fuel refueling pipe and the first grip body when the fuel refueling pipe is gripped by the first and second grips is narrowed. Therefore, the gripping force for gripping the fuel refueling pipe by the first and second grippers becomes stronger, and the fuel refueling pipe can be firmly fixed to the vehicle body.

It is a perspective view which shows around the fuel fuel pipe of the vehicle to which the fuel pipe mounting structure in Embodiment 1 of this invention is applied. It is an enlarged view of the mounting structure part of FIG. It is an exploded perspective view of the refueling pipe mounting structure in Embodiment 1 of this invention. It is sectional drawing in the IV-IV line of FIG. It is sectional drawing in the VV line of FIG. It is a figure corresponding to FIG. 4 in Embodiment 2 of this invention. It is a figure corresponding to FIG. 5 in Embodiment 2 of this invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. It should be noted that the following description of the preferred embodiment is essentially merely an example.

<< Embodiment 1 of the invention >>
FIG. 1 shows the periphery of the fuel fuel pipe 1 of a vehicle to which the fuel pipe mounting structure according to the first embodiment of the present invention is applied. The fuel filler pipe 1 has a fuel filler port 1a at one end, while the other end is connected to a fuel tank (not shown) of the vehicle, and fuels fuel such as gasoline or light oil poured into the fuel filler port 1a. It is designed to guide you to the tank.

The surface of the fuel oil supply pipe 1 is treated with an organic film (cationic electrodeposition coating, powder coating, etc.) to make it non-conductive. However, as shown in FIG. 3, only one circle is formed in the middle. The first unpainted portion 1b of the shape is formed.

As shown in FIG. 1, one end of the fuel refueling pipe 1 is connected to a position near the refueling port 1a of the fuel refueling pipe 1, while the other end is connected to a fuel tank (not shown). Breather tubes 2 forming an elongated cylindrical shape are arranged side by side.

The surface of the breather pipe 2 is treated with an organic film (cationic electrodeposition coating, powder coating, etc.) to make it non-conductive, and when fuel is refueled to the fuel tank using the fuel refueling pipe 1. The air containing the vaporized fuel is discharged from the fuel tank to the fuel filler port 1a side of the fuel filler pipe 1.

As shown in FIGS. 2 to 4, the fuel supply pipe 1 is adapted to be attached to a predetermined position of the vehicle body 10 by using a fixture 3.

The fixture 3 has a grip 4 for gripping the fuel oil supply pipe 1 and the breather pipe 2, a metallic fixing bolt 5 for fixing the grip 4 to the vehicle body 10, and a thickness having a through hole 6a formed in the center. A disk-shaped rubber member 6 (elastic body) is provided, and the rubber member 6 is compressible in the thickness direction thereof.

That is, the through hole 6a of the rubber member 6 is formed through in the compression direction thereof.

The gripping tool 4 is a bracket 7 (first gripping body) and a cover panel 8 (first gripping body) arranged in the radial direction of the fuel refueling pipe 1 and in a direction orthogonal to the juxtaposed direction of the fuel refueling pipe 1 and the breather pipe 2. A second grip body) is provided.

The bracket 7 is obtained by press-molding a strip-shaped metal plate, and has an organic film treatment (cationic electrodeposition coating, powder coating, etc.) on the surface to make it non-conductive.

As shown in FIG. 4, at the center of one end in the longitudinal direction of the bracket 7, an engaging claw 71 having a substantially L-shaped cross section formed by bending on the opposite side of the cover panel 8 is provided at one end in the longitudinal direction of the bracket 7. A first grip portion 72 curved so as to be recessed on the opposite side of the cover panel 8 is formed in a portion continuous with the engaging claw 71 on the side, and the first grip portion 72 corresponds to the outer peripheral surface of the fuel oil supply pipe 1. It has a shape that makes it.

As shown in FIGS. 4 and 5, the first grip portion 72 is formed with a fitting recess 72a recessed on the opposite side of the cover panel 8, and the bottom surface of the fitting recess 72a has a substantially rectangular shape. ..

In the center of the bottom surface of the fitting recess 72a, an overhanging portion 72b is formed so as to project substantially hemispherically on the fuel oil supply pipe 1 side, and the tip surface of the overhanging portion 72b has a metal portion without being painted. The exposed second unpainted portion 72c is formed.

The rubber member 6 can be fitted into the fitting recess 72a with the overhanging portion 72b corresponding to the through hole 6a. That is, the fitting recess 72a is formed at a position corresponding to the rubber member 6 in the bracket 7, and the second unpainted portion 72c is formed in the fitting recess 72a.

Further, the opening peripheral edge of the fitting recess 72a in the bracket 7 constitutes an annular grip portion 72d having a rectangular frame shape, and the annular grip portion 72d has an outer peripheral surface thereof when the bracket 7 is brought close to the fuel supply pipe 1. It comes in contact with.

As shown in FIGS. 3 and 4, a long hole 73 extending in the longitudinal direction of the bracket 7 is formed in a portion continuous with the first grip portion 72 in the middle portion of the bracket 7, and is opposite to the cover panel 8 in the bracket 7. On the side, a mounting nut 9a with a washer is welded so as to correspond to the elongated hole 73.

Further, on the other end side of the bracket 7 in the longitudinal direction, a second grip portion 74 curved so as to be recessed on the opposite side of the cover panel 8 is formed, and the second grip portion 74 corresponds to the outer peripheral surface of the breather tube 2. It has a shape.

As shown in FIGS. 2 and 3, the cover panel 8 is a press component having a substantially U-shape having a wide cross section opened to the bracket 7 side, and the surface thereof is treated with an organic film (cationic electrodeposition coating or powder coating). Etc.) to make it non-conductive.

The cover panel 8 has a pair of vertical wall portions 81 facing each other in the parallel direction of the fuel oil supply pipe 1 and the breather pipe 2, and a substantially rectangular plate-shaped cover portion 82 connecting one edge portion of the compatible wall portion 81 to each other. I have.

Flange portions 83 are formed on the other edges of the vertical wall portion 81 so as to project in directions away from each other and extend along the fuel oil supply pipe 1, and the cover panel 8 is attached to the vehicle body 10 on each of the flange portions 83. A mounting hole 83a is formed for mounting the fuel on the surface.

Further, as shown in FIG. 4, the one standing wall portion 81 is formed with an engaging hole 81a to which the engaging claw 71 of the bracket 7 can be engaged.

As shown in FIGS. 2 to 4, a recess 84 recessed on the bracket 7 side is formed in the center of the cover portion 82 on one side in the extension direction of the fuel supply pipe 1.

A flat portion 84a is formed on the bottom surface of the recessed portion 84, and a bolt insertion hole 84b is formed in the center of the flat portion 84a.

As shown in FIGS. 3 and 4, an unpainted third unpainted portion 84c is formed on the peripheral edge of the bolt insertion hole 84b on the opposite side of the bracket 7 in the flat portion 84a, and the bolt insertion hole 84b is formed. When the mounting bolt 9b is inserted from the opposite side of the bracket 7, the head of the mounting bolt 9b comes into contact with the third unpainted portion 84c.

As shown in FIG. 3, a third grip portion 85 curved so as to be recessed on the opposite side of the bracket 7 is formed between one of the standing wall portions 81 and the recessed portion 84 in the cover portion 82, and the third grip portion is formed. Reference numeral 85 is a shape corresponding to the outer peripheral surface of the fuel filler pipe 1.

On the other hand, between the other standing wall portion 81 and the recessed portion 84 in the cover portion 82, a fourth grip portion 86 curved so as to be recessed on the opposite side of the bracket 7 is formed, and the fourth grip portion 86 is a breather tube. It has a shape corresponding to the outer peripheral surface of 2.

Then, as shown in FIG. 4, the gripper 4 has a first grip portion 72 of the bracket 7 and a third grip portion of the cover panel 8 in a state where the rubber member 6 is fitted in the fitting recess 72a of the bracket 7. The fuel supply pipe 1 is arranged between the 85 and the breather pipe 2 is arranged between the second grip portion 74 and the fourth grip portion 86 of the bracket 7, and the engagement claw 71 is provided with the engagement hole 81a. The bracket 7 and the cover panel 8 are brought close to each other, and the fuel filler pipe 1 and the breather pipe 2 are sandwiched and gripped by the bracket 7 and the cover panel 8 from their respective radial directions.

When the fuel filler pipe 1 and the breather pipe 2 are gripped by the bracket 7 and the cover panel 8, the mounting bolt 9b is passed through the bolt insertion hole 84b and the elongated hole 73 in order and screwed into the mounting nut 9a. The cover panel 8 maintains the state of gripping the fuel supply pipe 1 and the breather pipe 2. Then, the first unpainted portion 1b of the fuel refueling pipe 1 and the second unpainted portion 72c of the bracket 7 are positioned corresponding to the rubber member 6, and the rubber member 6 is compressed between the bracket 7 and the fuel refueling pipe 1. It is arranged in such a state that it covers the first unpainted portion 1b and the second unpainted portion 72c.

At this time, the bracket 7 includes a welded portion of the mounting nut 9a to the bracket 7, a mounting bolt 9b screwed to the mounting nut 9a, a third unpainted portion 84c of the cover panel 8 with which the mounting bolt 9b contacts, and a fixing bolt. It is designed to be grounded to the vehicle body 10 side by 5.

Further, when the bracket 7 and the cover panel 8 grip the fuel oil supply pipe 1, the overhanging portion 72b is in a state of passing through the through hole 6a, and the second unpainted portion 72c is in pressure contact with the first unpainted portion 1b. It has become. That is, the second unpainted portion 72c is configured to be directly pressed against the first unpainted portion 1b via the through hole 6a.

Further, when the bracket 7 and the cover panel 8 grip the fuel refueling pipe 1, the annular grip portion 72d is in pressure contact with the outer peripheral surface of the fuel refueling pipe 1.

From the above, according to the first embodiment of the present invention, the fuel oil supply pipe 1 is directly formed by the first unpainted portion 1b formed on the surface thereof and the second unpainted portion 72c of the bracket 7 without using the rubber member 6. Since it is grounded to the vehicle body 10, it is possible to reliably prevent ignition due to charging. Further, the rubber member 6 is in close contact with the outer peripheral portion of the first unpainted portion 1b on the surface of the fuel oil supply pipe 1 in the circumferential direction, and corrosive media such as water does not adhere to the first unpainted portion 1b. Therefore, it is possible to reliably prevent the fuel oil supply pipe 1 from rusting due to the first unpainted portion 1b having no rust preventive coating. Further, when performing the assembly work of gripping the fuel oil supply pipe 1 with the bracket 7 and the cover panel 8, it is only necessary to sandwich the rubber member 6 between the bracket 7 and the fuel oil supply pipe 1, and the heat shrinkage step of Patent Document 1 Since it is not necessary to increase the number of work processes, it is possible to construct a fuel pipe mounting structure for a vehicle with good productivity and low cost.

Further, since the overhanging portion 72b overhanging to the fuel refueling pipe 1 side is formed in the portion of the bracket 7 in contact with the fuel refueling pipe 1, when the fuel refueling pipe 1 is gripped by the bracket 7 and the cover panel 8. In addition, the contact pressure between the first unpainted portion 1b and the second unpainted portion 72c becomes high. Therefore, even if the fuel oil supply pipe 1 is charged, static electricity can be reliably flowed to the vehicle body 10 side.

Further, when the fuel filler pipe 1 is gripped by the bracket 7 and the cover panel 8, the rubber member 6 fits into the fitting recess 72a of the bracket 7, so that the position of the rubber member 6 with respect to the bracket 7 does not shift. Therefore, it becomes easy to sandwich the rubber member 6 between the fuel oil supply pipe 1 and the bracket 7, and the time required for attaching the fuel oil supply pipe 1 to the vehicle body 10 can be shortened.

In addition, since the annular grip portion 72d is provided on the peripheral edge of the fitting recess 72a in the bracket 7, the fuel refueling pipe 1 and the bracket 7 when the fuel refueling pipe 1 is gripped by the bracket 7 and the cover panel 8 are provided. The contact area between and is narrowed. Therefore, the gripping force for gripping the fuel refueling pipe 1 by the bracket 7 and the cover panel 8 becomes stronger, and the fuel refueling pipe 1 can be firmly fixed to the vehicle body 10.

<< Embodiment 2 of the invention >>
6 and 7 show Embodiment 2 of the present invention. In the second embodiment, the structure of the rubber member 6 and the partial structure of the overhanging portion 72b in the bracket 7 are different from those of the first embodiment, and the others are the same as those of the first embodiment. Only the part will be explained in detail.

The overhanging portion 72b of the second embodiment has a smaller amount of overhanging to the cover panel 8 side than the overhanging portion 72b of the first embodiment, and when the fuel filler pipe 1 is gripped by the bracket 7 and the cover panel 8. A gap S1 is formed between the first unpainted portion 1b and the second unpainted portion 72c.

On the other hand, the rubber member 6 of the second embodiment is made of conductive rubber and does not have the through hole 6a as in the first embodiment. Then, the rubber member 6 is compressed more than the other portions between the first unpainted portion 1b and the second unpainted portion 72c when the fuel oil supply pipe 1 is gripped by the bracket 7 and the cover panel 8. The compressed portion constitutes the conductive portion 6b of the present invention.

That is, when the bracket 7 and the cover panel 8 grip the fuel oil supply pipe 1, the second unpainted portion 72c of the second embodiment indirectly presses against the first unpainted portion 1b via the conductive portion 6b. It is configured.

From the above, in the refueling pipe mounting structure according to the second embodiment of the present invention, it is possible to prevent the occurrence of rust, improve productivity and reduce the cost as in the first embodiment, and the fuel refueling pipe 1 is formed on the surface thereof. Since the first unpainted portion 1b and the second unpainted portion 72c of the bracket 7 are indirectly grounded to the vehicle body via the rubber member 6, ignition due to charging can be reliably prevented.

In the second embodiment of the present invention, the overhanging portion 72b is provided in the fitting recess 72a, but the rubber member 6 is compressed as a whole to form the first unpainted portion 1b and the second unpainted portion 72c. It is not essential to provide the overhanging portion 72b if it is in contact with it.

Further, in the first and second embodiments of the present invention, the non-conductive coating is applied to the region other than the second unpainted portion 72c of the bracket 7, but the region other than the second unpainted portion 72c of the bracket 7 is coated. It is not essential to apply a non-conductive coating.

Further, in the first and second embodiments of the present invention, the bottom surface of the fitting recess 72a has a rectangular shape, but it may have a circular shape so as to correspond to the outer shape of the rubber member 6.

Further, in the first and second embodiments of the present invention, the rubber member 6 has a disk shape, but the rubber member 6 is not limited to this, and may have a rectangular frame shape, for example.

The present invention is suitable for a vehicle refueling pipe mounting structure.

1 Fuel refueling pipe 1b 1st unpainted part 3 Fixture 6 Rubber member (elastic body)
6a Through hole 6b Conductible part 7 Bracket (first grip)
8 Cover panel (second grip)
10 Vehicle body 72a Fitting recess 72b Overhanging part 72c Second unpainted part 72d Ring gripping part

Claims (5)

It is a vehicle refueling pipe mounting structure that attaches a cylindrical metal fuel refueling pipe with a non-conductive coating on the surface to the vehicle body using a fixture.
The fixture is a metal first grip that is grounded to the vehicle body side, and
A second metal grip that grips the fuel filler pipe by sandwiching it from the first grip in the radial direction, and
It is provided with an elastic body that is arranged in a compressed state between the first grip body and the fuel oil supply pipe and is provided with a through hole penetrating in the compression direction.
At the position corresponding to the elastic body on the surface of the fuel filler pipe, the unpainted first unpainted portion is provided so as to be covered with the elastic body.
An unpainted second unpainted portion is provided on the surface of the first grip body at least at a position corresponding to the elastic body.
When the first grip body and the second grip body grip the fuel oil supply pipe, the second unpainted portion is configured to directly press contact with the first unpainted portion through the through hole. The fuel pipe mounting structure of the vehicle, which is characterized by being painted. In the oil supply pipe mounting structure of the vehicle according to claim 1,
The first grip body is formed with an overhanging portion that overhangs the fuel supply pipe side.
A vehicle refueling pipe mounting structure characterized in that the second unpainted portion is formed on the tip surface of the overhanging portion. It is a vehicle refueling pipe mounting structure that attaches a cylindrical metal fuel refueling pipe with a non-conductive coating on the surface to the vehicle body using a fixture.
The fixture is a metal first grip that is grounded to the vehicle body side, and
A second metal grip that grips the fuel filler pipe by sandwiching it from the first grip in the radial direction, and
It is provided with an elastic body provided with a conductive portion while being arranged in a compressed state between the first grip body and the fuel oil supply pipe.
At the position corresponding to the elastic body on the surface of the fuel filler pipe, the unpainted first unpainted portion is provided so as to be covered with the elastic body.
An unpainted second unpainted portion is provided on the surface of the first grip body at least at a position corresponding to the elastic body.
The second unpainted portion is configured to indirectly press contact with the first unpainted portion via the conductive portion when the first grip body and the second grip body grip the fuel oil supply pipe. Being done
The first grip body is formed with an overhanging portion that overhangs the fuel supply pipe side.
A vehicle refueling pipe mounting structure characterized in that the second unpainted portion is formed on the tip surface of the overhanging portion. In the vehicle fuel pipe mounting structure according to any one of claims 1 to 3 .
A fitting recess into which the elastic body can be fitted is formed at a position corresponding to the elastic body of the first grip body.
The second unpainted portion is a vehicle oil supply pipe mounting structure, characterized in that it is formed in the fitting recess. In the oil supply pipe mounting structure of the vehicle according to claim 4 ,
The peripheral edge of the opening of the fitting recess is provided with an annular grip portion that presses against the fuel supply pipe when the first grip body and the second grip body grip the fuel supply pipe. Refueling pipe mounting structure of the vehicle.

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