JP5517763B2 - Fuel tank for automobile - Google Patents

Description

  The present invention relates to a protective structure for a fuel tank for an automobile mounted under the floor panel of the automobile.

  Conventionally, a fuel tank for an automobile is often attached under a floor panel because of space. In this case, since a protrusion such as a reinforcing member is provided below the floor panel, contact may occur between the fuel tank and the protrusion. For this reason, a gap or the like has been provided in order to prevent interference between the fuel tank and its protrusion.

  For example, as shown in FIG. 6, frames 111 are provided on the left and right sides of the floor panel 4, and the fuel tank 110 is held therebetween (see, for example, Patent Document 1). However, it may be difficult to provide a sufficient space between the frame 111 and the fuel tank 110 due to the structure of the vehicle. In particular, when the fuel tank 110 is installed on the lower surface near the center of the vehicle, the space is limited and there are many protrusions, so it may be difficult to take up space.

  Also, as shown in FIG. 7, there is a fuel tank 210 that is attached to the vehicle body 1 with an attachment band 130 and a heat insulating cover 220 is attached to the attachment band 130 (see, for example, Patent Document 2). In this case, one end of the attachment band 130 is locked in the engagement hole of the vehicle body 1, and the other end is screwed to a hook bolt 133 locked in the vehicle body 1 to hold the lower surface of the fuel tank 210. Attached. Near the center of the attachment band 130, a heat insulating cover 220 is attached with a screw 132 via a connecting member 131.

In this case, due to the vibration of the vehicle, the fuel tank 210 and the vehicle body 1 or the floor panel 4 are brought into contact with each other, so that the paint of the fuel tank 210 and the vehicle body 1 or the floor panel 4 may be peeled off. Contact with 210 occurred.
For this reason, the rubber sheet 7 is stuck on the upper surface of the fuel tank 210 with a butyl tape or the like on the contact portion with the floor panel 4 or the vehicle body 1 to prevent the paint tank from being peeled off or being damaged. It was.

Further, when there is a possibility that the protrusion of the vehicle body 1 may come into contact with the fuel tank 210 at the time of a collision, the thickness of the rubber sheet 7 is increased or the space with the vehicle body is increased.
However, if there is not enough space between the fuel tank and the vehicle body or the floor panel 4, it may be possible to attach a steel plate or the like having a high rigidity to the contact portion between the protrusion of the vehicle body and the fuel tank. In this case, the iron plate and the projecting part of the vehicle body or the floor panel come into contact with each other, resulting in paint peeling.

Japanese Patent Laid-Open No. 2006-199072 Japanese Utility Model Publication No. 5-22137

  SUMMARY OF THE INVENTION An object of the present invention is to provide a fuel tank protection structure for an automobile that can easily and reliably manufacture and attach a protection member and can reliably protect the fuel tank.

The present invention of claim 1 for solving the above-mentioned problems is directed to a protective structure for a fuel tank for an automobile mounted under a floor panel of an automobile.
A protective member is attached to the upper surface portion of the fuel tank corresponding to the protrusion formed on the lower surface of the automobile body,
The protective member has a metal plate portion, a flat rubber portion joined to the upper surface of the metal plate portion, and a double-sided adhesive portion attached to the lower surface of the metal plate portion,
The metal plate part is formed with a plurality of holes, a plurality of convex parts fitting into the hole parts are formed on the lower surface of the rubber part, and the lower surface of the metal plate part and the convex part of the rubber part are formed by a double-sided adhesive part. It is the protective structure of the fuel tank for motor vehicles characterized by having adhere | attached on.

  In the first aspect of the present invention, since the protective member is attached to the upper surface portion of the fuel tank corresponding to the protrusion formed on the lower surface of the vehicle body of the automobile, the friction between the protrusion of the vehicle body and the fuel tank due to vibration of the vehicle body or the like. Even if the fuel tank comes into contact with the end of the projecting portion of the vehicle body due to a collision or the like, the fuel tank is not damaged by the protective member.

  The protection member includes a metal plate portion, a flat rubber portion joined to the upper surface of the metal plate portion, and a double-sided adhesive portion attached to the lower surface of the metal plate portion. For this reason, a fuel tank can be protected with respect to the strong impact from the protrusion of a vehicle body with a metal plate part. Further, the rubber portion can prevent direct contact between the metal plate portion and the protrusion of the vehicle body, thereby preventing the vehicle body from being scratched and the paint from peeling off. Further, the protective member can be firmly attached to the fuel tank by the double-sided adhesive portion, and damage to the fuel tank due to the metal plate portion can be prevented.

  The metal plate part is formed with a plurality of holes, a plurality of convex parts fitting into the hole parts are formed on the lower surface of the rubber part, and the lower surface of the metal plate part and the convex part of the rubber part are formed by a double-sided adhesive part. Glued to. For this reason, the metal plate portion and the rubber portion are integrally formed without the protrusion of the rubber portion being fitted into the hole portion so that the rubber portion and the metal plate portion are not displaced. And the convex part of the rubber part can be attached at the same time and attached to the fuel tank, and the metal plate part and the rubber part can be fueled without using double-sided adhesive tape for adhesion between the metal plate part and the rubber part. It can be firmly bonded to the tank.

  According to a second aspect of the present invention, there is provided a fuel tank for an automobile in which a convex portion protruding downward is formed on a metal plate portion, the convex portion is inserted into a concave portion formed in the fuel tank, and a protective member is bonded to the fuel tank. This is a protective structure.

  According to the second aspect of the present invention, the metal plate portion is formed with a convex portion protruding downward, the convex portion is inserted into the concave portion formed in the fuel tank, and the protective member is bonded to the fuel tank. For this reason, when the outside air temperature becomes high and the double-sided adhesive portion is softened, when the protective member is displaced from the fuel tank, the convex portion of the metal plate portion of the protective member becomes the concave portion of the fuel tank. Engagement can be avoided.

  According to a third aspect of the present invention, the protective member has a rubber part peripheral part so that the periphery of the metal plate part is surrounded by the rubber part, and the rubber part peripheral part, the convex part of the rubber part, and the lower surface of the metal plate part, This is a protective structure for a fuel tank for an automobile in which is attached to the fuel tank by a double-sided adhesive portion at the same time.

According to the third aspect of the present invention, since the protective member is formed with the peripheral portion of the rubber portion so that the periphery of the metal plate portion is surrounded by the rubber portion, the metal plate portion and the fuel tank due to the displacement of the protective member in the front-rear and left-right directions. It is possible to prevent interference and interference between the metal plate portion and the protrusion of the vehicle body.
Since the peripheral part of the rubber part, the convex part of the rubber part and the metal plate part are simultaneously bonded to the fuel tank by the double-sided adhesive part, it prevents water from entering the metal plate part in the protective member and prevents the occurrence of rust. The adhesion between the rubber part and the metal plate part can be further strengthened.

  According to a fourth aspect of the present invention, there is provided a fuel tank protective structure for an automobile in which the double-sided adhesive portion is formed of a butyl rubber tape.

  In the present invention of claim 4, since the double-sided adhesive portion is formed of a butyl rubber tape, one butyl rubber tape can function as both the double-sided adhesive tape and the cushion material, and the metal plate portion of the protective member and the fuel While preventing interference with the tank, the protective member can be firmly bonded.

  The present invention of claim 5 is a protective structure for a fuel tank for automobiles in which an inclined surface is formed on at least one end face of the peripheral edge of the rubber part of the protective member.

  In the present invention of claim 5, since the inclined surface is formed on at least one end surface of the peripheral portion of the rubber portion of the protective member, when the protective member is bonded to the fuel tank, the part of the release paper on which the inclined surface is formed A gap is generated between the adhesive tape and the release paper of the double-sided adhesive part can be easily peeled off, and the workability of the adhesive work can be improved.

According to the present invention of claim 6, the protrusion formed on the lower surface of the vehicle body of the automobile is a reinforcing member of the floor panel of the vehicle body, and the protective member is attached to a portion corresponding to the end surface of the reinforcing member of the floor panel . This is a protective structure for a fuel tank for automobiles.

In the present invention of claim 6, the protrusion formed on the lower surface of the vehicle body of the automobile is a reinforcing member of the floor panel of the vehicle body, and the protective member is attached to a portion corresponding to the end surface of the reinforcing member of the floor panel . Is. For this reason, even if the floor panel is deformed due to a collision of the vehicle body and the fuel tank comes into contact with the end surface of the reinforcing member of the floor panel, the fuel tank is protected by the protective member, and damage to the fuel tank is prevented. Can do.

  According to a seventh aspect of the present invention, the fuel tank is a protective structure for a fuel tank for a contracted vehicle attached near the center of the lower surface of the vehicle body.

  In the present invention of claim 7, since the fuel tank is attached near the center of the lower surface of the vehicle body, even if the vicinity of the central portion of the lower surface of the vehicle body is deformed due to a collision of the vehicle body, etc. Damage to the fuel tank can be prevented.

The protective member of the present invention has a metal plate portion, a flat rubber portion joined to the upper surface of the metal plate portion, and a double-sided adhesive portion attached to the lower surface of the metal plate portion. The fuel tank can be protected against strong impacts from the protrusions of the car, and the rubber part prevents direct contact between the metal plate and the car body's protrusions, preventing the car body from scratching and peeling off the paint. The metal plate portion is formed with a plurality of hole portions, a plurality of convex portions that fit into the hole portions are formed on the lower surface of the rubber portion, and the metal plate portion and the convex portion of the rubber portion are formed by a double-sided adhesive portion. Because it is bonded to the fuel tank, the convex part of the rubber part fits into the hole of the metal plate part, and the rubber part and the metal plate part do not shift, and the lower surface of the metal plate part and the protruding part of the rubber part by the double-sided adhesive part Can be glued at the same time and attached to the fuel tank and firmly glued to the fuel tank Can.

It is a top view of the state which attached the protection member to the fuel tank which is embodiment of this invention, and was attached under the reinforcement member. It is a figure of the protection member used for this invention, (a) is a bottom view of a protection member, (b) is sectional drawing along the AA line of FIG. 2 (a) of a protection member. It is a figure of the metal plate part used for this invention, (a) is a top view of a metal plate part, (b) is sectional drawing along the BB line of Fig.3 (a) of a metal plate part. It is. It is sectional drawing along CC line of the state of attaching the protection member to the fuel tank which is embodiment of this invention, and attaching it under the reinforcement member. FIG. 2 is a cross-sectional view taken along the line DD of FIG. 1 in a state in which a protective member is attached to the fuel tank according to the embodiment of the present invention and attached below the reinforcing member. It is sectional drawing of the state which attached the conventional fuel tank to the floor panel. It is sectional drawing of the state which attached the other conventional fuel tank and the heat insulation member to the floor panel.

A protective structure for an automobile fuel tank 10 according to an embodiment of the present invention will be described with reference to FIGS.
As shown in FIG. 1, the fuel tank 10 used in the embodiment of the present invention has a pump unit mounting hole 16 formed on the upper surface so that a fuel pump (not shown) and the like can be taken in and out of the fuel tank 10. A pump unit mounting lid 17 for closing the pump unit mounting hole 16 and mounting the fuel pump in the fuel tank 10 is mounted.

  Further, the fuel tank 10 is provided with an inlet pipe connecting portion 14 for connecting to an inlet pipe (not shown) for injecting fuel into the fuel tank 10 from a fuel filler port (not shown) provided in the vehicle body 1. . A fuel pipe 15 for sending fuel from the fuel pump to the engine is also attached. Furthermore, an electric cord for driving the fuel pump and various pipes for adjusting the evaporated fuel in the fuel tank 10 are attached.

Although the fuel tank 10 is made of metal or synthetic resin, any fuel tank 10 can be used in the present invention. In the present embodiment, a synthetic resin fuel tank 10 will be described as an example.
In the case of the metal fuel tank 10, steel or stainless steel can be used.

  In the case of the fuel tank 10 made of a synthetic resin, it is formed in a shape that matches the space of the mounting portion of the vehicle body, and is formed of a single layer of high density polyethylene (HDPE), high density polyethylene (HDPE), or a skin layer A layer formed of a multilayer structure of a barrier layer and a main body layer can be used. In the case of a multilayer structure, the skin layer and the main body layer are formed from a thermoplastic synthetic resin that has high impact resistance and maintains rigidity against fuel oil, and may be formed from high-density polyethylene (HDPE). preferable. As the thermoplastic synthetic resin constituting the barrier layer, for example, ethylene vinyl alcohol copolymer (EVOH), polybutylene terephthalate, polyphenylene sulfide (PPS) or the like is preferably used.

Next, the protrusion formed at the lower part of the vehicle body of the automobile will be described. This protrusion is a protrusion that is formed in the lower part of the vehicle body of the automobile and may come into contact with the fuel tank 10, but in the present embodiment, the floor of the vehicle body attached near the center of the lower part of the vehicle body. This is the vehicle body reinforcing member 2 of the panel 4. As shown in FIG. 1, two vehicle body reinforcing members 2 of the floor panel 4 are formed in a long shape, and the front end portion 3 is located near the upper wall 11 of the fuel tank 10 as shown in FIG. 4. Yes.
A protective member 20 to be described later is attached to a portion of the fuel tank 10 corresponding to the tip 3 of the reinforcing member.

Next, the protection member 20 used in the present embodiment will be described with reference to FIGS. 2, since FIG. 2A is a bottom view of the protection member 20, FIG. 2B shows the protection member 20 upside down, and the upper surface of the metal plate portion 30 is shown below. Has been.
As shown in FIG. 2, the protection member 20 includes a metal plate portion 30, a rubber portion 40 integrally bonded to the upper surface (the lower surface in FIG. 2B) of the metal plate portion 30, and the metal plate portion. And a double-sided adhesive portion 50 attached to the lower surface of 30 (the upper side surface in FIG. 2B).

  As shown in FIG. 3A, the metal plate portion 30 is formed in a metal rectangular plate shape. An oblong metal plate first hole 32 is formed on the left side of the metal plate portion 30 in FIG. 3A, and an oval metal plate second hole portion on the right side in FIG. 33 is formed. Near the metal plate second hole 33, a metal plate protrusion 35 is formed on the upper portion in FIG. 3A so as to protrude downward (in FIG. 3B, the upper side surface). As shown in FIG. 3B, the metal plate convex portion 35 is formed to swell from the metal plate portion 30 in a mountain shape.

  A hanger hole 34 is formed on the side of the metal plate second hole 33 and below the metal plate protrusion 35 in FIG. The hanger hole 34 is a hole for attaching the metal plate part 30 to a hanger that suspends the metal plate part 30 for rust prevention treatment. When painting for rust prevention treatment, the hanger hole 34 of the metal plate part 30 is hung on the hanger for painting, and when performing metal plating, the metal plate part 30 is hung on the hanger of the plating tank.

A rubber part 40 is formed on the upper surface of the metal plate part 30. The rubber part 40 is formed in a flat plate shape so as to cover the metal plate part 30.
The upper surface (the lower surface in FIG. 2B) of the rubber part 40 is formed on a plane so as to cover the metal plate part 30. For this reason, when attached to the fuel tank 10, the protrusion of the vehicle body does not directly contact the metal plate 30.

  On the lower surface of the rubber portion 40 (the upper surface in FIG. 2B), the rubber portion first convex portion having a shape corresponding to the metal plate first hole portion 32 and the metal plate second hole portion 33 of the metal plate portion 30 described above. 42 and the rubber part 2nd convex part 43 are formed. The height of the rubber part first convex part 42 and the rubber part second convex part 43 is substantially the same as or slightly larger than the thickness of the metal plate part 30.

  A rubber peripheral edge 46 is formed around the lower surface of the rubber part 40 so that the metal part 30 can be surrounded by the rubber part 40. For this reason, when the metal plate part 30 is fitted in the lower surface of the rubber part 40, the rubber part first convex part 42 of the rubber part 40 is inserted into the metal plate first hole part 32 of the metal plate part 30, and the rubber part second. The convex portion 43 is inserted into the metal plate second hole portion 33 of the metal plate portion 30. The rubber portion peripheral edge 46 can surround the metal plate portion 30.

Then, as shown in FIG. 2A, the back surface of the protection member 20 includes the back surface of the metal plate portion 30, the rubber portion first convex portion 42, the rubber portion second convex portion 43, and the rubber portion peripheral edge portion 46. Be placed.
An inclined surface is formed on at least one end face of the rubber part peripheral part 46 of the rubber part 40. In the present embodiment, the rubber part inclined surface 47 is formed on the left end face in FIG.

  A double-sided adhesive portion 50 is adhered to the back surface of the protective member 20. The double-sided adhesive part 50 can completely cover and adhere simultaneously to the back surface of the metal plate part 30, the rubber part first convex part 42, the rubber part second convex part 43, and the rubber part peripheral part 46. For this reason, the metal plate part 30 and the rubber part 40 can be firmly bonded. Further, it is possible to prevent the occurrence of rust by preventing water and the like from entering the metal plate portion 30.

  The double-sided adhesive portion 50 is preferably formed with a butyl rubber tape. In this case, one butyl rubber tape can serve as both a double-sided adhesive tape and a cushioning material, preventing interference between the metal plate portion 30 of the protective member 20 and the surface of the fuel tank 10 and protecting it. The member 20 can be firmly bonded.

  The protective member 20 configured as described above is bonded to the fuel tank 10. In order to adhere the protective member 20 to the fuel tank 10, the release paper adhered to the surface of the double-sided adhesive portion 50 of the protective member 20 is peeled off. At this time, since the rubber portion inclined surface 47 is formed in a part of the rubber portion peripheral edge portion 46, a gap is formed between the release portion and the release paper from the rubber portion inclined surface 47. It is easy and the workability of the bonding work can be improved.

  The protective member 20 is attached to the upper surface portion of the fuel tank 10 corresponding to the vehicle body reinforcing member 2 which is a protrusion formed on the lower surface of the vehicle body 1 of the automobile. In the present embodiment, as shown in FIGS. 1, 4, and 5, the fuel corresponding to the front end portions 3 of the two elongated vehicle body reinforcing members 2 attached to the lower surface of the floor panel of the vehicle body 1. Attached to the upper wall 11 of the tank 10. For this reason, even if friction between the vehicle body reinforcing member 2 of the vehicle body 1 and the fuel tank 10 occurs due to vibration of the vehicle body 1 or due to a collision or the like, the fuel tank 10 contacts the front end portion 3 of the vehicle body reinforcing member 2 of the vehicle body 1. Even if it comes into contact, the protective member 20 does not damage the fuel tank 10.

  In the present embodiment, the protective member 20 is a part attached to the front end part 3 of the vehicle body reinforcing member 2 attached to the lower surface of the floor panel. It attaches so that the front-end | tip part 3 may be located in the center part (part in which the metal plate 1st hole part 32 and the metal plate 2nd hole part 33 are not formed) on the plane of the metal plate part 30 of this protection member 20. FIG. For this reason, even if the fuel tank 10 contacts the front end portion 3 of the vehicle body reinforcing member 2 due to a collision of the vehicle body or the like, the edge of the front end portion 3 of the vehicle body reinforcing member 2 contacts the central portion of the metal plate portion 30. The fuel tank 10 can be protected by the protective member 20 to prevent the fuel tank 10 from being damaged.

  When the fuel tank 10 is attached near the center of the lower surface of the vehicle body, the vicinity of the central portion of the lower surface of the vehicle body is deformed due to a vehicle collision or the like, and the vehicle body reinforcing member 2 attached to the lower surface of the vehicle body is deformed. Even if the fuel tank 10 abuts, the protective member 20 can reliably abut against the distal end portion 3 of the vehicle body reinforcing member 2 to prevent the fuel tank 10 from being damaged.

  When the protective member 20 is bonded to the fuel tank 10, the metal plate convex portion 35 of the protective member 20 is inserted into the concave portion 12 formed on the upper wall 11 of the fuel tank 10 as shown in FIGS. 4 and 5. The protective member 20 is attached. For this reason, when the outside air temperature becomes high and the double-sided adhesive portion 50 is softened, when the protective member 20 is displaced from the fuel tank 10, the metal plate convex portion 35 of the protective member 20 is It is possible to engage with the ten recesses 12 and prevent the displacement.

  The protective member 20 bonded to the fuel tank 10 has a metal plate portion 30 and a rubber portion 40 integrally joined to the upper surface of the metal plate portion 30. For this reason, the fuel tank 10 can be protected against a strong impact from the vehicle body reinforcing member 2 by the highly rigid metal plate portion 30 in the vibration or collision of the vehicle. Further, since the rubber portion 40 is provided on the surface, it is possible to prevent direct contact between the metal plate portion 30 and the vehicle body reinforcing member 2, and it is possible to prevent the vehicle body 1 from being damaged and from being peeled off.

  The metal plate portion 30 is formed with a plurality of hole portions, a plurality of convex portions that fit into the hole portions are formed in the rubber portion 40, and the protruding portions of the metal plate portion 30 and the rubber portion 40 are fueled by the double-sided adhesive portion 50. Bonded to the tank 10. For this reason, the convex part of the rubber part 40 is fitted into the hole part of the metal plate part 30 and the rubber part 40 and the metal plate part 30 are integrally formed without being displaced, and the double-sided adhesive part 50 is used to form the metal. The convex part of the plate part 30 and the rubber part 40 can be bonded at the same time and attached to the fuel tank 10, without using a double-sided adhesive tape for bonding between the metal plate part 30 and the rubber part 40. The plate part 30 and the rubber part 40 can be firmly bonded to the fuel tank 10.

DESCRIPTION OF SYMBOLS 1 Car body 2 Car body reinforcement member 10 Fuel tank 12 Concave part 20 Protection member 30 Metal plate part 32 Metal plate 1st hole part 33 Metal plate 2nd hole part 35 Metal plate convex part 36 Metal plate peripheral part 40 Rubber part 42 Rubber part 1 Convex part 43 Rubber part second convex part 47 Rubber part inclined surface 50 Double-sided adhesive part

Claims (7)

In the protective structure of the fuel tank for automobiles installed under the automobile floor panel,
A protective member is attached to the upper surface portion of the fuel tank corresponding to the protrusion formed on the lower surface of the vehicle body of the automobile,
The protective member has a metal plate portion, a flat rubber portion joined to the upper surface of the metal plate portion, and a double-sided adhesive portion attached to the lower surface of the metal plate portion,
The metal plate portion is formed with a plurality of holes, and a plurality of convex portions that fit into the hole portions are formed on the lower surface of the rubber portion, and the lower surface of the metal plate portion and the convex portions of the rubber portion are A protective structure for a fuel tank for automobiles, wherein the fuel tank is adhered to the fuel tank by a double-sided adhesive portion.   The automobile according to claim 1, wherein a convex portion protruding downward is formed on the metal plate portion, the convex portion is inserted into a concave portion formed in the fuel tank, and the protective member is bonded to the fuel tank. Protective structure for fuel tank. The protective member forms a rubber part peripheral part so that the periphery of the metal plate part is surrounded by the rubber part, and the rubber part peripheral part, the convex part of the rubber part, and the lower surface of the metal plate part are simultaneously formed. The protective structure for a fuel tank for an automobile according to claim 1 or 2, wherein the fuel tank is adhered to the fuel tank by the double-sided adhesive portion.   The protective structure for a fuel tank for an automobile according to any one of claims 1 to 3, wherein the double-sided adhesive portion is formed of a butyl rubber tape.   The protective structure for a fuel tank for an automobile according to any one of claims 1 to 4, wherein an inclined surface is formed on at least one end surface of the peripheral edge portion of the rubber portion of the protection member. The protrusion formed on the lower surface of the vehicle body of the automobile is a reinforcing member for a floor panel of the vehicle body, and the protective member is attached to a portion corresponding to an end surface of the reinforcing member of the floor panel. Item 6. A protective structure for a fuel tank for an automobile according to any one of items 5 to 6.   The said fuel tank is the protection structure of the fuel tank for motor vehicles described in any one of Claims 1 thru | or 6 attached to the center part vicinity of the said vehicle body lower surface.

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