JP2558559Y2 - Fuel tank mounting structure - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a fuel cell having a curved portion in which a floor panel projects downward, a fuel tank having a concave portion corresponding to the curved portion, and a fuel tank provided below the floor panel. The present invention relates to a fuel tank mounting structure in which a concave portion of a fuel tank is disposed along a curved portion of the fuel tank.

[0002]

2. Description of the Related Art As described in Japanese Utility Model Laid-Open Publication No. 61-93323, for example, a fuel tank mounting structure is provided in which a gap between the lower surface of a floor panel and a tank surface of a fuel tank is constant. It is known that a pad member functioning as a spacer member is interposed to prevent interference between the lower surface of the floor panel and the tank surface of the fuel tank.

[0003]

However, in such a case, since the pad member is bonded using an adhesive tape or the like, the adhesive tape or the like of the pad member comes off due to vibration of the vehicle or the like. The mounting position of the pad member may be shifted. In such a case, the pad member does not function as a spacer member, and the fuel tank is loose,
Interference with the floor panel causes problems such as peeling of paint.

Further, it is conceivable to newly provide a shift prevention pad to regulate the shift of the mounting position of the pad member. However, if such a shift prevention pad is provided, the number of components increases, which causes an increase in cost. Become.

The reason why the adhesive tape comes off as described above is that the pad member needs to function as a spacer member and therefore needs to have a hardness that does not compress the pad member. If the surface is painted with an undercoat or the like and becomes uneven, the pad member does not adapt to the unevenness because the rigidity of the pad member is relatively high, and as a result, the bonding area of the pad member is insufficient and sufficient. This is because the adhesive strength cannot be secured. Further, the interval between the floor panel and the fuel tank is difficult to be a constant interval due to variations in assembly, variations in parts, and the like, so that the pressing force is biased and sufficient surface pressure cannot be obtained. . Further, when the pad member is adhered to the inclined surface, the pad member has a relatively high hardness as described above, so that the position of the pad member is likely to shift due to the thrust load.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and provides a fuel tank mounting structure in which the displacement of a spacer member is prevented.

[0007]

According to the present invention, a floor panel has a curved portion protruding downward, a fuel tank has a concave portion corresponding to the curved portion, and a fuel tank is provided below the floor panel. It is assumed that a fuel tank mounting structure is provided in which a concave portion of a fuel tank is disposed along a curved portion of a floor panel. In this device, a spacer member is provided between the floor panel and the fuel tank to keep a constant distance therebetween, and an undercoat layer for preventing rust is provided on the tank surface of the fuel tank opposed to the floor panel. It shall be formed. For such a structure, an adhesive layer is formed on the surface of the undercoat layer, and an elastic member softer than the spacer member is interposed between the adhesive layer and the spacer member. And
The spacer member is bonded to the tank surface of the fuel tank via the elastic member.

[0008]

In the above construction, since an elastic member softer than the spacer member is interposed between the adhesive layer and the spacer member, the elastic member fits into the bonding surface and the adhesiveness is improved. In particular, even if the tank surface of the fuel tank is uneven due to the undercoat layer for preventing rust,
The elastic member is deformed and conforms well to the shape of the tank surface, and the adhesive force is greatly improved as compared with the case where the spacer member is directly bonded to the tank surface. In addition, since the adhesive layer is formed along the uneven shape of the undercoat layer, the bonding area increases, and the bonding effect increases.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to the drawings.

In FIG. 1 and FIG.
Is an automobile, and the floor panel 2 has a curved portion 2a curved so that the vicinity of the rear seat protrudes downward.

A fuel tank 3 is provided below the floor panel 2. The fuel tank 3 has a shape corresponding to the floor panel 2 and has a concave portion (tank surface) 3a in an upper portion,
The fuel tank 3 is disposed below the floor panel 2 in a positional relationship such that the concave portion 3a is along the curved portion 2a.
Reference numeral 4 denotes a strap for supporting the fuel tank 3, and reference numeral 5 denotes a refueling pipe connected to the fuel tank 3 and has a refueling port 5a.
6 is a breather pipe, 7 is an exhaust pipe, and 8 is a silencer.

Between the floor panel 2 and the fuel tank 3, a spacer member 11 is disposed on the floor panel 2 side. An adhesive is applied to the lower surface of the spacer member 11 on the side of the fuel tank 3 to form an adhesive layer 12. An adhesive is also applied to the tank surface 3a side of the fuel tank 3 to form another adhesive layer 13.

An elastic member 14 made of, for example, urethane foam is interposed between the adhesive layers 12 and 13, and the elastic member 14 is bonded to the spacer member 11 and the fuel tank 3 via the adhesive layers 12 and 13. Have been.

An undercoat layer 15 for preventing rust is formed on the tank surface 3a of the fuel tank 3, and an adhesive layer 13 is formed on the tank surface 3a via the undercoat layer 15. It will be.

With the above construction, the spacer member 1
Since a low-rigidity elastic member 14 is bonded to 1 via the adhesive layer 12, the spacer member 11 is bonded to the fuel tank 3 via the elastic member 14. That is, the spacer member 11 is disposed on the tank surface 3 of the fuel tank 3 via the elastic member 14 which is softer than the spacer member 11.
a. Therefore, the elastic member 14 is deformed and conforms well to the shape of the tank surface 3a of the fuel tank 3, and the adhesive force is greatly improved as compared with the case where the spacer member 11 is directly bonded to the tank surface 3a.

In particular, an undercoat layer 15 for preventing rust is formed on the upper surface of the tank surface 3a of the fuel tank 3, which serves as an adhesive surface, for the reason that water easily accumulates. Since 3a has an uneven shape due to the undercoat layer 15, the adhesive area is increased by the uneven shape, and the adhesive effect is enhanced.

[0017]

[Effects of the Invention] As described above, according to the present invention,
Even if the tank surface of the fuel tank is uneven due to the rust preventing undercoat layer, an elastic member softer than the spacer member is interposed between the adhesive layer and the spacer member. Are deformed and conform well to the shape of the tank surface, and the adhesive strength can be greatly improved as compared with the case where the spacer member is directly bonded to the tank surface. In addition, since the adhesive layer is formed along the uneven shape of the undercoat layer, the bonding area increases, and the bonding effect can be improved. Therefore, in the case where the fuel tank is arranged so that the concave portion of the fuel tank is along the curved portion of the floor panel, and in the case where the tank surface of the fuel tank is uneven by the undercoat layer for preventing rust. Even if there is, displacement of the position of the spacer member can be reliably prevented.

[Brief description of the drawings]

FIG. 1 is a schematic side view showing a relationship between a floor panel of an automobile and a fuel tank.

FIG. 2 is a schematic plan view of the same.

FIG. 3 is a diagram showing a relationship between a floor panel and a fuel tank.

FIG. 4 is a detailed view of a portion A in FIG. 3;

[Explanation of symbols]

 Reference Signs List 1 automobile 2 floor panel 2a curved portion 3 fuel tank 3a tank surface (recess) 11 spacer member 12 adhesive layer 13 adhesive layer 14 elastic member 15 undercoat layer

Claims (1)

(57) [Scope of request for utility model registration] A fuel tank having a concave portion corresponding to the curved portion, wherein the fuel tank has a concave portion corresponding to the curved portion;
In a fuel tank mounting structure in which a concave portion of a fuel tank is disposed along a curved portion of the floor panel, a space between the floor panel and the fuel tank is provided between the two.
Constant keep scan pacer member is interposed, the tank surface of the fuel tank opposing to the floor panel
The undercoat layer for rust prevention is formed, the adhesive layer on the surface of the undercoat layer is formed, the spacer member between the adhesive layer and the spacer member
It is interposed soft elastic member than the spacer member relative to the tank surface of the fuel tank
A fuel tank mounting structure, wherein the fuel tank is bonded via the elastic member .