JP2904987B2 - Vehicle fuel tank mounting structure and mounting method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fuel tank mounting structure and a mounting method for mounting a fuel tank on a vehicle frame comprising side members and cross members.

[0002]

2. Description of the Related Art Generally, when a fuel tank is mounted on a vehicle frame, there are a method of mounting the fuel tank from above the vehicle body and a method of mounting the fuel tank from below the vehicle body as disclosed in Japanese Utility Model Laid-Open No. 63-130321.

[0003]

However, the former method of mounting the fuel tank has good assemblability, but it is difficult to remove the fuel tank from the lower side of the vehicle body during maintenance of the vehicle body, resulting in poor serviceability. There's a problem.

[0004] On the other hand, the latter method of mounting the fuel tank has good serviceability during maintenance, but has a poor assemblability when the fuel tank is mounted on the vehicle body in a vehicle manufacturing process.
There is a problem that the efficiency of the assembling operation is reduced.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has as its object to overcome the problems of the above two methods and improve the efficiency of the assembling work, and to improve the serviceability during maintenance. It is an object of the present invention to provide a vehicle fuel tank mounting structure and a mounting method capable of improving the fuel tank.

[0006]

In order to achieve the above object, the invention according to claim 1 has flanges on both left and right sides between a pair of left and right side members located on both sides of a vehicle frame. In a fuel tank mounting structure for a vehicle, in which a fuel tank is mounted on the flange, a bracket is mounted on the inner surface of each of the side members and the flange of the fuel tank is mounted. An extending portion that projects and a lower bent portion that bends downward from the extending portion is formed in a substantially inverted L-shaped cross section, and the lower bent portion is formed on the inner surface of the body of each of the side members. With the fastening member detachably attached from the inside of the vehicle body, with the flange of the fuel tank placed on the extension of the bracket,
The upper and lower nuts are used for fastening from both upper and lower sides by stud bolts and upper and lower nuts penetrating both.

According to a second aspect of the present invention, a fuel tank having flanges on both left and right sides is mounted between a pair of left and right side members located on both sides of a vehicle frame via brackets at the flanges. Each of the brackets is formed to have a substantially L-shaped cross section including an extending portion formed to extend to the inside of the vehicle body and a lower bent portion bent downward from the extending portion. In the method for mounting a fuel tank of a vehicle, the lower bent portion of each bracket is detachably attached to the inner surface of the side member by a fastening member from the inside of the vehicle body at the time of assembly, and the flange of the fuel tank is attached to the side member. , While placed on the extension of the bracket, fasten from both upper and lower sides with stud bolts and upper and lower nuts penetrating both, and remove The, by removing the fastening member from the inside of the vehicle body downward, the downward bent portion of the both bracket removed from the side member, the fuel tank in which a structure is taken out from the vehicle body lower each said bracket.

[0008]

According to the present invention, according to the present invention, when assembling,
The fuel tank flange is placed on the extension of the bracket attached to each side member, and the stud bolt and the upper and lower nuts are fastened together with these extensions, so that the fuel tank can be mounted on the vehicle body. Can be assembled from inside. At the time of maintenance, by removing the fastening members of both side members from the inside below the vehicle body,
By removing the lower bent portion of the bracket from the side member, the fuel tank can be taken out together with the bracket from below the vehicle body. Therefore, assemblability is improved, and serviceability during maintenance is also improved.

[0009]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows a fuel tank mounting structure for a vehicle according to a first embodiment of the present invention. Reference numeral 1 denotes a fuel tank, and the fuel tank 1 has a flange 2 formed on the outer periphery of a side surface. . Reference numerals 3 and 3 denote a pair of left and right side members located on both sides of the frame of the vehicle. Between the side members 3 and 3, the fuel tank 1 is interposed between the side members 3 and 3 via brackets 4 respectively. It is attached from the inside of the vehicle.

Each of the brackets 4 is formed to have a substantially L-shaped cross section including an extending portion 5 extending inside the vehicle body and a lower bent portion 6 bent downward from the extending portion 5. The two brackets 4 have a symmetrical shape. As shown in FIG. 2, the lower bent portion 6 is fastened to the side member 3 by a bolt 7 and a nut 8 which are fastening members. The bolt 7 is inserted from the outer surface 3a of the side member 3 to the lower bent portion 6 through the inner surface 3b of the vehicle body. Has been entered. This allows
Each of the brackets 4 is attached to and fixed to each of the side members 3, and can be detached from the side members 3 by loosening the nut 8 and removing the bolt 7.

Reference numerals 10, 11 and 12 denote insertion holes through which the bolts 7 are inserted. The insertion holes 10, 11 and 12 correspond to the vehicle body outer side surface 3a, the vehicle body inner side surface 3b, and the bracket 4 of each of the side members 3. Are formed in each of the lower bent portions 6.

The flange 2 of the fuel tank 1 is mounted on the extension 5 of the bracket 4. With the flange 2 mounted, the flange 2 and each of the extensions 5 are connected to each other. Are fastened from both upper and lower sides of the vehicle body by stud bolts 13 penetrating them and upper and lower nuts 14 and 15. By restricting the vertical movement of the fuel tank 1 by loosening the lower nut 15 from below the vehicle body, the fuel tank 1 can be easily removed from the vehicle body. In this state, the bolts 7, 7 and the nuts 8, 8 of the side members 3, 3 are removed from below the vehicle body, and the bracket 4 is removed from the side frame 3. , And fall off the vehicle body so as to fall downward.

16 and 17 are stud bolts 1
3, three insertion holes 16 and 17 are formed in the flange 2 of the fuel tank 1 and the extension 5 of the bracket 4 respectively.

The stud bolt 13 has a flange 18 extending in the middle in the axial direction. The flange 18 allows the stud bolt 13 to pass through the insertion hole 17 of the extension 5 from above the vehicle body. Then, the stud bolt 13 stops coming into contact with the upper surface of the extension portion 5 to prevent the stud bolt 13 from falling off. When the flange 2 of the fuel tank 1 is fastened, the stud bolt 13 is first inserted into the insertion hole 17 of the extension 5 from above the vehicle body. Each stud bolt 13 inserted through the insertion hole 17 is fixed to the extension portion 5 by a nut 15 screwed from below. Thereafter, the flange 2 of the fuel tank 1 is placed on the extension 5 from above the vehicle body. At this time, the stud bolt 13 is inserted into the insertion hole 16 of the flange 2. In this state, a nut 14 is screwed into the stud bolt 13 from above the vehicle body, and the flange 2 is fastened to the extension 5.

Next, a method of mounting a fuel tank on a vehicle based on the above structure for mounting a fuel tank on a vehicle will be described. When assembling the fuel tank 1, the lower bent portion 6 of each bracket 4 is attached to the inner surface 3 b of each side member 3 from the inside of the vehicle body by fastening bolts 7 and nuts 8. The flange 2 of the fuel tank 1 is placed on the extension portions 5 and 5 of the fuel tank 1 from above the vehicle body. In this state, the flange 2 of the fuel tank 1 and the extending portions 5 and 5 are fastened from both the upper and lower directions by the stud bolt 13 and the upper and lower nuts 14 and 15. As described above, the fuel tank 1 can be assembled from the inside of the vehicle body, so that the assemblability of the fuel tank 1 can be improved and the working capacity can be increased.

During maintenance of the vehicle body, the nuts 7, 7,
.. Are loosened and the bolts 8, 8,... Are removed, the lower bent portions 6, 6 of the brackets 4, 4 are removed from the side members 3, 3, and the fuel tank 1 together with the brackets 4, 4 is removed from below the vehicle body. Therefore, serviceability at the time of maintenance can be improved.

FIG. 3 shows a fuel tank mounting structure for a vehicle according to a second embodiment of the present invention. The lower bent portion 6 of each bracket 4 is formed by a nut 19 and a bolt 20 as fastening members. Has been concluded. The nut 19
Is fixed to the back surface of the inner surface 3 b of the side member 3, and a bolt 20 that passes through the lower bent portion 6 from inside the vehicle body is screwed into the nut 19. In addition, since the configuration other than the above is the same as that of the first embodiment, the same components are denoted by the same reference numerals, and
The description is omitted.

Since the basic structure of the second embodiment is the same as that of the first embodiment, it goes without saying that the same effects as those of the first embodiment can be obtained.

[0020]

As described above, according to the present invention, the fuel tank is mounted on the brackets attached to the side members and fastened together with these brackets. The fuel tank can be assembled easily, and the workability of the fuel tank can be improved. In addition, during maintenance of the vehicle body, by removing the fastening members of both side members from the inside below the vehicle body, the fuel tank together with the bracket can be removed from below the vehicle body, so that serviceability during maintenance can be improved.

[Brief description of the drawings]

FIG. 1 is a perspective view of a vehicle fuel tank mounting structure according to a first embodiment of the present invention.

FIG. 2 is a cross-sectional view as seen from the direction of line XX in FIG.

FIG. 3 is a sectional view of a vehicle fuel tank mounting structure according to a second embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Fuel tank 2 Flange 3 Side member 3b Inner surface of side member 4 Bracket 5 Extension part 6 Lower bent part 7,20 Bolt (fastening member) 8,19 Nut (fastening member) 13 Stud bolt 14 Upper nut 15 Lower nut

Claims (2)

(57) [Claims] 1. A fuel tank mounting structure for a vehicle, wherein a fuel tank having flanges on both left and right sides is mounted between a pair of left and right side members located on both sides of a frame of the vehicle. A bracket is attached to the inner surface of the vehicle body of each side member, and a bracket to which the flange of the fuel tank is attached is provided. The bracket extends to the inside of the vehicle body and bends downward from the extension. The lower bent portion is formed in a substantially inverted L-shaped cross section having a lower bent portion, and the lower bent portion is detachably attached to the inner surface of the vehicle body of each of the side members by a fastening member from the inner side of the vehicle body, When the flange of the fuel tank is placed on the extension of the bracket, a stud bolt and upper and lower nuts penetrating both are provided. Fuel tank mounting structure for a vehicle, characterized in that it is fastened from upper and lower sides by. 2. A fuel tank having flanges on both left and right sides between a pair of left and right side members located on both sides of a frame of a vehicle, each of the flanges is attached via a bracket. ,
Each of the above-mentioned brackets has a substantially L-shaped cross section having an extended portion formed to extend to the inside of the vehicle body and a downward bent portion bent downward from the extended portion. In the tank mounting method, at the time of assembly, on the inner surface of the body of each side member,
In a state where the lower bent portion of each of the brackets is detachably attached from the inside of the vehicle body by a fastening member, and the flanges of the fuel tank are placed on the extending portions of both brackets,
Fasten from both upper and lower sides with stud bolts and upper and lower nuts penetrating both, and when removing, remove the fastening member from the inside inside the lower part of the vehicle body, remove the lower bent parts of both brackets from the side members And mounting the fuel tank together with the bracket from below the vehicle body.