JPH0532336Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) The present invention relates to a resin sub-tank, which is molded from a resin material such as polyethylene that softens and deforms when immersed in engine fuel, and the fuel tank equipment is mounted on the wall surface of the resin sub-tank. The field of application is to prevent troubles caused by the above-mentioned deformation of the attached sub-tank.

(Prior Art) In order to prevent a fuel tank for a vehicle from being filled with less fuel and collecting the fuel in one corner of the tank, making it impossible to supply fuel to the engine and causing the same phenomenon as fuel starvation. A sub-tank is provided at the bottom of the center of the fuel tank to allow fuel to flow in from a pipe or the like, so that fuel can be supplied to the engine even if the fuel level in the sub-tank is inclined. However, as shown in Fig. 3, when sub-tank a softens and deforms in the fuel, fuel tank equipment c such as an in-tank pump, or a bracket d to which the equipment is attached, is attached to support its wall surface b. If so, the sub-tank a will be deformed by the fuel as shown by the solid line, and a part of the equipment c will rub against the bottom of the sub-tank a, causing abnormal noise. Examples of resin materials that deform when immersed in fuel include polyethylene resin, which is often used because it is easy to mold.

(Problems to be solved by the invention) The occurrence of the drawbacks mentioned in the previous section of the synthetic resin sub-tank cannot be completely eliminated. The purpose of this invention is to prevent deformation of the synthetic resin sub-tank, which has many problems as described above, without changing the molding material, especially in the wall portion where the fuel tank equipment is attached. It is.

(Configuration to solve the problem) The present invention is designed to easily achieve the purpose stated in the previous section, and the interior of the fuel tank is made of synthetic resin that softens and deforms when immersed in engine fuel. In a sub-tank which is housed in a tank and has fuel tank equipment such as an in-tank pump attached to the wall, a metal plate is attached to the sub-tank to reinforce the wall, and the fuel tank equipment is attached to the metal plate. This relates to a resin sub-tank.

In addition to the in-tank pump, the fuel tank equipment described above includes a fuel suction pipe, a liquid level sensor, and the like, and these fuel tank equipment are well known.

In order to further clarify the structure of the present invention, preferred embodiments of the present invention will be described in the next section.

(Example) Fig. 1 shows an example of a sub-tank 1 of the present invention formed in a rectangular box shape, and the peripheral part is surrounded by walls 2a, 2b, 2.
Surrounded by c, 2d. The sub-tank 1 is molded using polyethylene resin as a molding material, and is attached to the center of the inner bottom surface of a fuel tank (not shown) made of resin or the like. This sub-tank 1 has an opening, for example, at the bottom of the left corner of the wall 2b in the drawing, and along the outer surfaces of the wall 2b and the wall 2c,
In addition, a communication pipe that opens at the left end of the wall surface 2c in the drawing is connected, or a gutter-like communication pipe with an open bottom whose bottom surface matches the bottom surface of the sub-tank is connected to the wall surface 2c.
Although the side surface is also opened at the right corner of the figure c, the connecting pipes are omitted in the drawing.

A metal plate 3 is provided on each outer surface of the entire wall surface 2a and a portion of the wall surfaces 2b and 2d, which is bent at the upper edge and hangs down to the inner surface.
Attach by fitting from the top edge. This metal plate 3 serves as a reinforcing plate to prevent the wall surfaces 2a to 2d of the sub-tank 1 from softening and deforming due to fuel. Cuts 4a, 4b, 4 from
Apply c.

Reference numeral 6 shows fuel tank equipment consisting of an in-tank pump, which is attached to a bracket 7 that is inserted into the sub-tank 1.The bracket 7 has a part that covers the wall surface 2a of the metal plate 3 from the inside and outside, and is fitted from the upper edge into the part that covers the wall surface 2a of the metal plate 3 from the outside. A spring-like hook 8 connected to the sub-tank 1 is fixed, and the fuel tank equipment 6 is mounted at a height so as not to come into contact with the inner bottom surface of the sub-tank 1 using the hook. When the fuel tank equipment 6 is an in-tank pump, a filter is provided in which a pump motor is fixed inside and a suction pipe 9 that projects horizontally from the bottom is maintained at a very small distance from the internal bottom of the sub-tank 1. 1
Set 0.

(Function) The present invention has the above-described configuration, and the peripheral wall of the sub-tank 1 to which the fuel tank equipment 6 is attached is reinforced with the metal plate 3, so that the sub-tank 1 is made of a resin material that softens and deforms due to the fuel in the fuel tank. Even if the fuel tank equipment 6 (or bracket 7) is formed by ) is permanently attached.

(Effects) The present invention has the above-mentioned structural action, and the metal plate 3 is attached to reinforce the resin molding material from changing due to chemical changes caused by immersion in fuel to prevent deformation. The fuel tank equipment 6 is attached to the metal plate 3, and since the fuel tank equipment is not attached to the wall of the sub-tank 1, the attachment position may be shifted after installation and may interfere with the internal bottom of the sub-tank. It does not cause any abnormal noise due to contact, and has the effect of making the attachment of fuel tank equipment more robust even if the sub-tank is made of resin.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of an embodiment of the present invention, Fig. 2 is a cutaway side view of the same, and Fig. 3 is a conventional resin sub-tank a.
FIG. 3 is a vertical sectional side view showing the deformation of the tank a and the displacement of the fuel tank equipment attached to the tank a. 1...Subtank, 2a-2d...Wall surface, 3...
...Metal plate, 6...Fuel tank equipment, 7...Bracket, 8...Hook.

Claims (1)

[Scope of utility model registration request] In a sub-tank that is made of synthetic resin that softens and deforms when immersed in engine fuel and is housed inside the fuel tank, and further has fuel tank equipment such as an in-tank pump attached to the wall, the wall of the sub-tank is reinforced. A resin sub-tank characterized by having a metal plate attached and fuel tank equipment attached to the metal plate.