JP2533656B2 - Mounting structure of fuel pipe for vehicle - Google Patents

Description

Description: TECHNICAL FIELD The present invention mounts a fuel tank on a floor panel in a trunk room, and at least a pipe of a fuel supply system in a fuel pipe led out from the fuel tank is provided under the floor panel. The present invention relates to a mounting structure for a vehicle fuel pipe, which is connected to each other using a flexible fuel hose.

2. Description of the Related Art Generally, in the case of a vehicle in which a fuel tank is mounted on a floor panel in a trunk room, various fuel pipes derived from the fuel tank are attached to a floor panel with a grommet or the like interposed from a through portion opened in the floor panel. A structure is known in which it is connected to the intake system of an internal combustion engine by leading it to the lower part of the engine.

For example, as shown in the plan view of the main part of FIG. 3, at least two penetrating portions 2a and 2b are provided on the floor panel 1, and the penetrating portion 2a on one side is mounted on the floor panel 1 via the grommet 3. The feed pipe 4 (fuel supply system pipe) derived from the fuel tank (not shown) is inserted, and the return pipe 6 and the evaporation tube 7 are inserted through the similar grommet 5 in the penetrating portion 2b on the other side. Has been done. The return pipe 6 is a pipe for returning the fuel from the carburetor (not shown) to the fuel tank to reduce the fuel temperature rise, and the evaporation tube 7 is a tube for guiding the evaporative gas in the fuel tank to the outside. . In the figure, 8 is a propeller shaft, 9
Is a differential housing, and the axles 10a and 10b extend from the differential housing 9 in the vehicle width direction.

Further, 11 is a muffler arranged below the floor panel 1 to reduce exhaust noise, 12 is a rear side member, and a pre-muffler 14a, 14b is provided in the middle of the exhaust pipes 13a, 13b connected to the muffler 11. 14b is equipped and the other ends of the exhaust pipes 13a, 13b are connected to an internal combustion engine (not shown).

In the case of such a conventional configuration, from the viewpoints of security and disaster prevention, it is necessary to consider that at least the penetrating portion 2a on one side through which the feed pipe 4 is inserted is not located directly above the exhaust pipes 13a and 13b. Therefore, even if the fuel leaks from the feed pipe 4, the fuel does not drip onto the hot exhaust pipes 13a and 13b.

SUMMARY OF THE INVENTION However, in such a conventional vehicle fuel pipe mounting structure, the penetration portion 2a, through which the feed pipe 4 is inserted, is attached to the exhaust pipe from the viewpoint of safety and disaster prevention described above.
Since it has to be formed in a predetermined portion of the floor panel 1 corresponding to a position separated from directly above 13a, 13b, at least two penetrations are made on the floor panel 1 from the viewpoint of the layout of layout with other fuel pipes. Since the parts 2a and 2b have to be provided, the rigidity of the floor panel 1 itself is reduced, and the number of parts such as grommets 3 and 5 and the number of assembling steps for installation are increased, which leads to cost increase. There was a problem that they would be invited.

That is, the floor panel 1 is a member to which many vehicle accessories such as seat belt anchors are fixed, and is also a strength member for ensuring the safety of the driver in the event of a vehicle collision, so that it has great rigidity. It is required that the plurality of penetrating portions 2a, 2
By providing b, there is a fear that the rigidity of the floor panel 1 will be reduced.

Further, the work of separately arranging the fuel pipes for each of the plurality of penetrating portions 2a and 2b is troublesome, and is a cause of increasing the number of steps.

Therefore, the present invention solves the problems that such a conventional fuel pipe mounting structure has, and reduces the number of parts and the number of assembling steps during wiring of the fuel pipe, and secures the rigidity of the floor panel. It is an object of the present invention to provide a mounting structure for a fuel pipe capable of

Means for Solving the Problems In order to achieve the above object, the present invention mounts a fuel tank on a floor panel and arranges a plurality of various fuel pipes derived from the fuel tank inside a rear side member. In a mounting structure of a fuel pipe for a vehicle, which is connected to an internal combustion engine after being guided to a lower side of the floor panel from a penetrating portion formed in the floor panel, the first aspect of the present invention is to provide a center line and a rear side of the vehicle. One through portion is opened at an appropriate portion of the floor panel located in the middle portion with the member, and a plurality of various fuel pipes led out from the fuel tank are collectively inserted into the through portion, and At least the fuel supply pipe in the fuel pipe is divided below the floor panel, and Is connected by using a flexible fuel hose. According to claim 2, the fuel hose for connecting the dividing points of the fuel pipe is arranged below both ends of the fuel hose and the floor panel. A configuration in which the distance on the plane between the substantially central portion of the fuel hose and the exhaust pipe is larger than the distance on the plane between the exhaust pipe and the exhaust pipe I am doing it.

According to this structure, since only one through-hole is formed on the floor panel, there is no fear that the rigidity of the floor panel itself may be reduced, and the through-hole may be interposed. Since various fuel pipes are collectively installed, the layout on the installation can be simplified and the number of assembly steps can be reduced.

Further, below the floor panel, the shape of the fuel hose that connects at least the cut portion of the feed pipe, which is the pipe of the fuel supply system in the fuel pipe, is formed on the plane between the central portion of the fuel hose and the exhaust pipe located below. Since the distance is set to be longer than the distance between the ends of the fuel hose and the exhaust pipe in the plane, even if the fuel hose should come off the feed pipe, the exhaust pipe with high fuel temperature should be used. Therefore, even if the penetrating portion is located above the exhaust pipe, there is no problem in terms of safety and disaster prevention.

Embodiment An embodiment of a vehicle fuel pipe mounting structure according to the present invention will be described in detail below with reference to FIG. 1 and FIG. .

FIG. 1 is a plan view showing an essential part of the present invention, and FIG. 2 is a side view of the same. Particularly, in FIG. 1, the state in which the floor panel 1 is removed is shown for the sake of convenience in order to clearly show the mounting structure of various fuel pipes. Shows.

Reference numeral 20 in the figure indicates the position of only one through portion provided at an appropriate portion on the floor panel 1, and this through portion 20 is mounted on the floor panel via the grommet 21 and is not shown in the figure. Feed pipe 4 derived from the fuel tank
The (fuel supply system pipe), the return pipe 6 and the evaporation tube 7 are collectively inserted.

The return pipe 6 is a pipe for returning the fuel from the carburetor (not shown) to the fuel tank as described above, and the evaporation tube 7 is a tube for guiding the vaporized gas in the fuel tank to the outside.

12 is a rear side member on one side, 13a and 13b are exhaust pipes connected to a muffler (not shown) disposed below the floor panel 1, and the other ends 13c and 13d of the exhaust pipes 13a and 13b are shown in FIG. It is connected to the external internal combustion engine.

Reference numeral 8 is a propeller shaft, 9 is a differential housing, and axles 10a, 10b are extended from the differential housing 9 in the vehicle width direction.

In the case of the illustrated example, the penetrating portion 20 provided on the floor panel 1 is at an appropriate portion located approximately in the middle of the distance L between the center line O of the vehicle and the rear side member 12, and in this example, in particular, on one side. An opening is formed at a position corresponding to the upper part of the exhaust pipe 13a.

Furthermore, among the fuel pipes, especially the feed pipe 4
Is divided below the floor panel 1, and the divided portions are connected to each other using a flexible fuel hose 22.

In the present embodiment, the return pipe 6 constituting the fuel pipe is also divided below the floor panel 1, and the divided portions are connected by using the flexible fuel hose 23. There is.

When attention is paid to the fuel hose 22 that connects the divided portions of the feed pipe 4, the distances A and A'on the plane between both ends of the fuel hose 22 and the exhaust pipe 13a located below the fuel hose 22.
Rather than the central portion of the fuel hose 22 and the exhaust pipe 13a.
It is considered that the distance B on the plane between them becomes larger.

In other words, the layout of the divided portion of the feed pipe 4 is set in advance so that the fuel hose 22 holds the substantially V-shaped shape, and by adopting such a shape, as described above, The distance B on the plane between the central portion of the hose 22 and the exhaust pipe 13a is set to the fuel hose 2
It can be set to be longer than the distance A, A ′ on the plane between the two ends of 2 and the exhaust pipe 13a.

According to the structure of the present invention, since only one penetrating portion 20 is formed on the floor panel 1, the rigidity of the floor panel 1 itself is not likely to decrease.

Furthermore, since various fuel pipes are routed through the penetrating portion 20, the layout on the route is simplified and the number of assembly steps is reduced. or,
Since the number of parts such as grommets required at the time of assembly can be reduced, there is an advantage that the cost can be reduced.

Further, in this embodiment, below the floor panel 1, at least the feed pipe 4 of the fuel supply system in the fuel pipe.
Since the fuel hose 22 connecting the disconnecting points is set so as to maintain the substantially doglegged shape, the distance B on the plane between the central portion of the fuel hose 22 and the exhaust pipe 13a located below is determined. Both ends of the fuel hose 22 and the exhaust pipe 13
It becomes longer than the distance A, A'on the plane with a, and even if the fuel hose 22 comes off the feed pipe 4, the fuel may drop directly onto the hot exhaust pipe 13a. The effect is obtained.

Therefore, even if the penetrating portion 20 is located above the exhaust pipe 13a as in the present embodiment, there is no problem in terms of safety and disaster prevention.

EFFECTS OF THE INVENTION As described in detail above, according to the fuel pipe mounting structure of the present invention, only one penetrating portion is provided at an appropriate portion of the floor panel located at the intermediate portion between the center line of the vehicle and the rear side member. A plurality of various fuel pipes that are formed from the fuel tank and that are formed into openings are collectively inserted into the penetrating portion, and at least the fuel supply system pipe in the fuel pipe is divided below the floor panel. Since the parts are connected using a flexible fuel hose, there is no fear that the rigidity of the floor panel itself will decrease, and the strength that secures the driver's safety in the event of a vehicle collision on the floor panel. It is possible to provide a function as a member and arrange many other vehicle accessories on the floor panel. .

Further, since various fuel pipes are collectively routed through the one penetrating portion, the layout on the route is simplified and the number of parts and the number of assembling steps are reduced to reduce the cost. The effect of being

Further, according to the structure of claim 2 of the present invention, between the both ends of the fuel hose connecting at least the dividing points of the pipe of the fuel supply system in the fuel pipe and the exhaust pipe arranged below the floor panel. Than the distance on the plane of
Since the distance on the plane between the approximately central portion of the fuel hose and the exhaust pipe is set to be larger, even if the fuel hose should come off from the pipe of the fuel supply system, It is possible to prevent the fuel from dripping directly into the high temperature exhaust pipe, and there is no problem in terms of safety and disaster prevention.

[Brief description of drawings]

FIG. 1 is a plan view of an essential part showing an embodiment of a mounting structure for a vehicle fuel pipe according to the present invention, and FIG. 2 is II of FIG.
FIG. 3 is a side view from the direction, and FIG. 3 is a main part plan view showing an example of a conventional fuel pipe mounting structure. 1 ... Floor panel, 4 ... Feed pipe, 6 ... Return pipe, 7 ... Evaporation tube, 8 ... Propeller shaft, 9 ... Differential housing, 12 ... Rear side member, 13a, 13b ... Exhaust pipe, 20 …… Penetration part, 21 …… Grommet, 22,23 …… Fuel hose,

Claims (2)

(57) [Claims] 1. A fuel tank is mounted on a floor panel, and a plurality of various fuel pipes led out from the fuel tank are connected to a floor panel located inside a rear side member from a through hole formed in the floor panel. In the mounting structure of the fuel pipe for a vehicle, which is connected to the internal combustion engine after being guided to the lower side of the vehicle, one penetration is provided at an appropriate portion of the floor panel located in the middle between the center line of the vehicle and the rear side member. A plurality of various fuel pipes led out from the fuel tank are collectively inserted into the through portion, and at least a fuel supply pipe in the fuel pipe is divided below the floor panel. A vehicle characterized in that the dividing points are connected using a flexible fuel hose. Fuel pipe mounting structure. 2. A fuel hose connecting the cut points of the fuel pipe, wherein the fuel hose is more than a distance on a plane between both ends of the fuel hose and an exhaust pipe arranged below a floor panel. 2. The mounting structure for a fuel pipe for a vehicle according to claim 1, wherein the mounting structure for a vehicle fuel pipe has a shape such that a distance on a plane between a substantially central portion of the exhaust pipe and the exhaust pipe becomes larger.