JP2533772Y2 - Fuel tank - 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 for vehicles or ships.

[0002]

2. Description of the Related Art As a fuel tank for a vehicle or a marine vessel, as shown in FIG. 6, a cylindrical shell 1 having a substantially rectangular cross section, and end plates 2 fixed to both ends of the shell 1 are provided. A baffle plate 3 is disposed in the shell 1 in parallel with the end plate 2 and partitions the inside of the shell 1 into small chambers to prevent excessive swinging and waving of the fuel. A device provided with an inlet 4, a drain plug, an outlet tube and the like has been conventionally used.

[0003]

In the above-described fuel tank, the plate 1 is conventionally bent into a rectangular cylinder, and the ends of the plate are seam-welded to form the shell 1.
In order to attach the baffle plate 3, a method has to be adopted in which the baffle plates 3 are sequentially fitted one by one into the cylindrical shell 1 and the flange of the baffle plate 3 is spot-welded to the shell 1. In addition, the positioning of the baffle plate 3 is very difficult, and a special spot welding machine is required because the spot welding is performed in a cylinder, so that the assembling work is very troublesome and troublesome.

In the case of forming a shell, the end portions are seam-welded after the plate material is bent into a rectangular tube, and the rigidity of the seam weld portions between the end portions is low, so that it is extremely difficult to handle the welding work. have.

The main purpose of the present invention is to address the above-mentioned conventional problems.

[0006]

According to the present invention, in the above-described fuel tank, a shell is formed by abutting and fixing two shell constituent members having a U-shaped cross section of a shape obtained by dividing a square cylinder into two parts, The plurality of baffle plates are also divided into two baffle components fixed by spot welding within the U-shaped cross section of the two shell components, and the divided edges of each of the two baffle components The structure is such that competitors are configured to be opposed to each other with a predetermined gap in the shell or to be connected by fitting of divided edges.

[0007]

As described above, since the baffle components are fixed to the two shell components having a U-shaped cross section by spot welding, the operations of positioning the baffle components and spot welding are extremely simple and easy. , Butting the two shell components to which the baffle components are fixed,
When the abutting portion is fixed by welding, the vicinity of the abutting portion has high rigidity due to the fixation of the baffle constituent members, so that handling such as abutting work and welding work becomes very easy, and improvement of work efficiency and Cost can be reduced.

[0008]

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

FIGS. 1 and 2 show a first embodiment of the present invention, wherein 1 is a shell, 2 is an end plate, 3 is a baffle plate, and 4 is a fuel inlet.

The shell 1 is composed of two shell components 11, 11 each having a U-shaped cross section obtained by dividing a rectangular cylinder into two.

The plurality of baffle plates 3 are also 2
The baffle is formed by two baffle components 31 having a shape in which the divided edges face each other with a predetermined gap therebetween.

The baffle components 31, 31 have notches 31b, 31b formed at both ends of the divided edges, and flanges 31a are formed all around the divided edges and the notches 31b, 31b. Is formed.

The end plate 2 is conventionally formed of a plate having a flange 2a on the outer periphery.

Hereinafter, the assembling work will be sequentially described.

First, a plurality of baffle components 31, 31 are attached to two shell components 11, 11 having a U-shaped cross section.
Are fixed by spot welding. In this case, since the baffle components 31 are fixed to the inside of the U-shaped cross section, the baffle components 3 are compared with the conventional spot welding in which the baffle plate is fitted into the square tubular member.
Positioning 1 can be performed very easily and reliably.
Spot welding can be easily performed without the need for a special welding machine as in the past.

In this manner, the two shell components 11, 11 each having the plurality of baffle components 31 fixed thereto.
Are joined to each other to form a square tube, and the two opposing sides 12 and 12 are joined and fixed by arc welding (for example, TIG welding) or resistance welding (for example, bat seam welding). In this case, two shell components 11, 1
Since a plurality of baffle components 31, 31 are already fixed in each of the two, two shell components 11,
11 has high rigidity in the vicinity of the mating portions 12, 12 and is very easy to handle, and the mating portions to be welded by the cutout portions 31b provided at both ends of the divided edges of the baffle constituting members 31, 31. 12, a hole-shaped space 3 inside
1c and 31c are formed, and the space 31c can be used as a hole for passing a back bar (backing metal) for welding, so that the welding operation can be performed easily and efficiently.

The space formed between the divided edges of the baffle components 31, 31 and the space 31c serve as a flow hole for a fluid (fuel) communicating with each compartment defined by the baffle plate 3. .

As described above, the two shell constituent members 11,
11 are welded and fixed, the end plates 2 and 2 are respectively fitted to both ends of the shell 1, and the joint between the flange 2a and the inner peripheral surface of the shell 1 is arc welded (for example, TIG welding, seam welding). (Welding) or the like, or as shown in FIG. 5, by double winding of the flange 2a and the end of the shell 1 to form the main body of the fuel tank.

Thereafter, various devices required as a fuel tank such as the fuel inlet 4 and a drain plug and an outlet tube are attached as in the conventional case.

Although the embodiment shown in FIGS. 1 and 2 shows an example in which the shell 1 and the baffle plate 3 are vertically divided into two parts, as shown in FIG. Not only the two-partitioning but also the two-sided shell-forming members 11 and 11 and the two baffle-forming members 31 and 31 are arranged so that one of them is large and the other is small. It may be divided.

FIG. 4 shows a third embodiment of the present invention. In the embodiment shown in FIGS.
In contrast to the structure in which the divided edges face each other with a predetermined gap, in the third embodiment, one divided edge of the baffle constituent members 31 is connected to the other divided edge. Is provided with a fitting groove 32 in which the shell constituting member 1 is fitted.
The other baffle member 3 is inserted into the fitting groove 32 of one baffle member by butt-welding and fixing the first and second baffle members.
1 are configured so that the divided edge portions thereof are fitted and connected to each other, and other configurations and assembling methods are shown in FIGS.
It is the same as the embodiment of FIG. 2, and the same reference numerals as those in FIGS. 1 and 2 represent the same parts.

The structure in which the divided edge portion of the other baffle member is fitted and connected to the fitting groove 32 of one baffle member as described above can also be applied to the embodiment shown in FIG.

The fuel tank according to the present invention can be applied not only to a fuel tank for a vehicle or a ship, but also to a fuel tank for a heater or the like.

[0024]

[Effect of the invention] According to the invention configured as described above,
The positioning of the baffle plate and the spot welding work are extremely easy and reliable, and the joining and welding fixing work of the two shell components are also very easy, so that the work efficiency in the manufacturing process is greatly improved and the cost is reduced. It is possible to achieve a great effect in practice.

[Brief description of the drawings]

FIG. 1 shows a first embodiment of the present invention, wherein A is a front view, B is a plan view, and C is a vertical side view.

FIG. 2 is an exploded perspective view of the fuel tank shown in FIG.

FIG. 3 shows a second embodiment of the present invention, wherein A is a front view, B is a plan view, and C is a longitudinal side view.

FIG. 4 shows a third embodiment of the present invention, wherein A is a front view, B is a plan view, and C is a longitudinal side view.

FIG. 5 is a partial cross-sectional view showing another example of an end plate fixing structure.

FIG. 6 shows a conventional fuel tank, wherein A is a perspective view,
B is a vertical sectional front view.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Shell 11 Shell constituent member 12 Butting part 2 End plate 3 Baffle plate 31 Baffle constituent member 32 Fitting groove

Claims (2)

(57) [Scope of request for utility model registration] 1. A substantially rectangular cylindrical shell, an end plate fixed to both ends of the shell and closing the both ends,
A fuel tank comprising a plurality of baffle plates arranged and fixed in a shell in parallel with the end plate and partitioning the inside of the shell into a plurality of chambers, wherein the shell has a U-shaped cross section obtained by dividing a square cylinder into two. And a plurality of baffle plates are fixed to two baffle components fixed by spot welding within the U-shaped cross section of the two shell components. A fuel tank, which is divided into two parts, and two baffle constituent members in a shell are arranged so that divided ends thereof are opposed to each other with a predetermined gap therebetween. 2. The fuel tank according to claim 1, wherein one of the two baffle components has a fitting groove in one of the divided edge portions to which the other divided edge portion is fitted, and the inside of the shell is formed. 3. The fuel tank according to claim 1, wherein the divided edges of the two baffle constituent members are connected by fitting into the fitting groove.