JPH0239858Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to an improvement of a fuel pipe mounting structure for an automobile.

(Prior Art) Conventionally, a fuel pipe mounting structure has been known in which a fuel inlet pipe that connects a fuel pipe and a fuel tank is exposed and provided below a floor panel that constitutes a vehicle body. By the way, below the floor panel, a side frame is arranged in the longitudinal direction of the vehicle body, and in this conventional automobile fuel pipe installation structure, the installation work of the fuel inlet pipe is restricted by this side frame. However, due to the space constraints between the side frame and the fuel inlet pipe, the installation space for automotive structural parts such as the suspension installed around the side frame becomes smaller, reducing the degree of freedom in design. There is a problem with the decline.

Furthermore, in order to improve the sturdiness of the side frame, reinforcing walls have traditionally been provided between a pair of vertical walls constituting the side frame at a predetermined interval in the direction in which the vertical walls extend. has been
This conventional structure has a problem in that the cost increases due to the provision of the reinforcing wall on the side frame. Incidentally, a structure in which pipes such as a fuel pipe and a brake pipe are arranged along a frame has been known for some time, as disclosed in Utility Model Application No. 52-75237. This thing is
The pipe does not have a structure that reinforces the frame, which is different from the purpose and structure of the present invention.

(Purpose of the invention) The invention was devised in view of the two problems of the prior art.The purpose of this invention is to secure a large installation space for automobile components such as the suspension installed around the side frame. Another object of the present invention is to provide a fuel pipe mounting structure for an automobile that can effectively reinforce a side frame without providing a special reinforcing member.

(Structure of the invention) In order to achieve the above object, the invention includes a side frame having a pair of vertical walls extending in the longitudinal direction of the vehicle body and having a closed cross-sectional shape joined to a floor panel; and a fuel inlet pipe disposed between the vertical walls and extending in the direction of extension of the pair of vertical walls, the fuel inlet pipe closely following at least one of the pair of vertical walls. and is brought into close contact with both of the pair of vertical walls at least in part, and one end of the fuel inlet pipe is inserted into the vehicle body through an opening formed in one of the vertical walls. The fuel inlet pipe has an inwardly projecting end that projects sideways and is connected to the fuel tank, and the other end of the fuel inlet pipe is connected to the vehicle body through an opening formed in the other vertical wall of the pair of vertical walls. is projected outwardly, and
An outwardly projecting end connected to a filler pipe, and the inwardly projecting end and the outwardly projecting end are respectively welded and fixed to the vertical wall. It has a structure and composition.

With the above configuration, the fuel inlet pipe is not only provided between a pair of vertical walls, its both ends are welded and fixed to the pair of vertical walls, and spanned between the pair of vertical walls; Since the side frame is closely aligned with at least one of the pair of vertical walls and at least a portion of the side frame is closely aligned with both of the pair of vertical walls, the rigidity of the side frame can be effectively increased. Accordingly, the side frame can be effectively reinforced by utilizing the fuel inlet pipe without providing a special reinforcing member.

Furthermore, since the fuel inlet pipe is disposed between the pair of vertical walls, a space corresponding to the fuel inlet pipe is created around the side frame. Therefore, a large installation space for automobile components such as a suspension installed around the side frame can be secured.

(Example) Below, a fuel pipe mounting structure for an automobile according to the present invention will be explained based on the drawings.

In FIG. 1, 1 is a fuel tank, 2 is a silencer, and side frames 3 and 4 are disposed on both sides of the fuel tank and extend in the longitudinal direction of the vehicle body. A fuel feed pipe 5, a fuel return pipe 6, an evaporation pipe 7, a breather pipe 8, and a connecting rubber hose 9 are connected to the fuel tank 1 as shown in FIG. The side frame 3 includes a pair of vertical walls 10,1
1 as shown in FIGS. 2 to 5 and 9, and in FIG. 3, the direction indicated by arrow A is the front side of the vehicle body, and the direction indicated by arrow B is the rear side of the vehicle body. The pair of vertical walls 10 and 11 are configured to extend in the longitudinal direction of the vehicle body, and an opening 12 is formed in the vertical wall 10 on the inside side of the vehicle body as shown in FIG. A notch 13 is formed near the rear of the side frame 3, as shown in FIG. The upper ends of the vertical walls 10, 11 are bent to form mounting plate parts 10a, 11a, and are joined to the floor panel 14 as shown in FIG. 9, so that the side frame 3 has a closed cross-sectional shape. There is.

A fuel inlet pipe 15 is provided between the pair of vertical walls 10 and 11. The fuel inlet pipe 15 is composed of a curved pipe portion 16, an inwardly projecting end portion 17, and an outwardly projecting end portion 18. Inwardly projecting end 17 and outwardly projecting end 1
8 refers to the curved pipe portion 16 as shown in FIG.
It is joined to both end faces of. Note that the inwardly projecting end 17, the curved pipe portion 16, and the outwardly projecting end 18
It may be molded integrally with. Inward protruding end 17
is protruded inward from the vehicle body through an opening 12 in the vertical wall 10 and connected to the connecting rubber hose 9, and the outwardly protruding end portion 18 is connected to the outside of the vehicle body through a notch 13 in the vertical wall 11. As shown in FIG. 9, the filler pipe 19
It is connected to the. The curved pipe portion 16 has a shape that extends along the vertical wall 10, and the curved pipe portion 16 has a shape extending along the vertical wall 10.
0 is disposed in close proximity to one side of the 0. In order to arrange this fuel inlet pipe 15 on the side frame 3, the inwardly protruding end 17, which constitutes a part of the fuel inlet pipe, is inserted into the opening 12 so as to protrude inwardly from the vehicle body, and then the inwardly protruding end 17 constituting a part of the fuel inlet pipe is inserted into the opening 12 so as to protrude inwardly from the vehicle body. The fuel inlet pipe 15 is lowered while the outwardly projecting end 18 is aligned with the U-shaped notch 13 shown in FIG. 5, and the outwardly projecting end 18 is supported by the vertical wall 11. Next, as shown in FIG. 7, the fixing plate 21 in which the U-shaped notch 20 extending downward is formed is placed along the vertical wall 11 as shown in FIGS. 6 and 8. A notch 20 is pushed into the outwardly protruding end 18 from the inner surface of the vertical wall 11 to form a circular opening surrounding the outwardly protruding end with the notches 13 and 20, and the outwardly protruding The end portion 18 is clamped and fixed between the peripheral walls of the notches 13 and 20. Next, the protruding base of the inwardly protruding end 17 is welded and fixed to the peripheral wall of the opening 12, and the protruding base of the outwardly protruding end 18 is welded and fixed to the peripheral wall of the opening formed by the notches 13 and 20. . Here, the fixing plate 21 is fixed to the vertical wall 11 by welding its upwardly bent plate part 21a to the mounting plate part 11a before welding and fixing the outwardly projecting end part 18 to the vertical wall 11. be.

Here, as shown in FIG. 3, in the side frame 3, the distance between the pair of vertical walls 10 and 11 in the rear part of the vehicle body where the notch 13 is present is narrower than the distance between the vertical walls in other parts. The thickness of the fuel inlet pipe 15 is formed to be approximately equal to the distance between the vertical walls in the vicinity of the notch 13, and the rear side of the vehicle body of the fuel inlet pipe 15 is connected to the pair of vertical walls 10, 11. In addition, the intermediate portion in the extending direction of the curved pipe portion 16 is welded to the vertical wall 10, thereby further improving the rigidity of the side frame 3. In this embodiment, a portion of the breather pipe 8 is also disposed on a pair of vertical walls 10 and 11 that constitute the side frame 3.
In FIG. 7, reference numeral 22 denotes a breather pipe guide opening, and the breather pipe 8 is projected from the breather pipe guide opening 22 to the outside of the vehicle body, is curved upward, and is connected to the filler pipe 19. There is. Furthermore, if the intermediate portion of the fuel inlet pipe 15 is welded and fixed within the frame 3, the rigidity can be further improved.

In addition, for automobiles in which the exhaust pipe system is installed near this fuel inlet pipe 15,
The vertical wall 10 on the inside of the vehicle body functions as a heat insulating wall, and heat damage caused to the fuel inlet pipe 15 by the exhaust pipe system can be prevented.

(Effects of the invention) As described above, the present invention can secure a large installation space for automobile components such as suspensions installed around the side frames, and can also strengthen the side frames without the need for special reinforcing members. It is possible to provide an automobile fuel pipe mounting structure that can effectively perform the following steps.

[Brief explanation of the drawing]

FIG. 1 is a plan view showing a schematic configuration of an automobile fuel pipe mounting structure according to the present invention, FIG. 2 is a perspective view showing a schematic structure of an automobile fuel pipe mounting structure according to the present invention, and FIG. 3 is a plan view showing a schematic structure of an automobile fuel pipe mounting structure according to the present invention. FIG. 4 is a side view showing the main structure of the fuel pipe mounting structure for an automobile according to the present invention, and FIG. 5 is a side view of the side frame according to the present invention. FIGS. 6 and 7 are perspective views showing the partial configuration, and FIGS. 6 and 7 are explanatory diagrams of the installation work of the fuel pipe installation structure for an automobile according to the present invention, FIG. 6 is a plan view thereof, and FIG. 7 is an illustration of the installation work. FIG. 8 is a perspective view of the fixing plate used, FIG. 8 is a side view showing the positional relationship between the fixing plate and the fuel inlet pipe, and FIG. 9 is a sectional view of the fuel pipe mounting structure according to the present invention. 1... Fuel tank, 3, 4... Side frame, 10, 11... Vertical wall, 14... Floor panel, 15... Fuel inlet pipe, 17...
...Inward projecting end, 18...Outward projecting end, 19...
...Filler pipe.

Claims (1)

[Claims for Utility Model Registration] A side frame having a pair of vertical walls extending in the longitudinal direction of the vehicle body and connected to a floor panel to form a closed cross-sectional shape; a fuel inlet pipe extending in the extending direction of the vertical walls, the fuel inlet pipe closely following at least one of the pair of vertical walls, and at least partially extending along the pair of vertical walls. one end of the fuel inlet pipe projects inward of the vehicle body through an opening formed in one of the pair of vertical walls, and is connected to the fuel tank. an inwardly protruding end portion, the other end portion of the fuel inlet pipe protruding outwardly of the vehicle body through an opening formed in the other vertical wall of the pair of vertical walls;
An outwardly projecting end connected to a filler pipe, and the inwardly projecting end and the outwardly projecting end are respectively welded and fixed to the vertical wall. structure.