JPS624303B2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention is directed to a vehicle tank that is provided with a buttful plate in the container body to prevent the liquid contained therein from shaking (undulating). This relates to fuel tanks.

Car fuel tanks, for example,
There is one shown in Publication No. 156516. In addition, various plastic fuel tanks have been put into practical use in view of their flexibility in shape, weight reduction, and cost reduction.

In the fuel tank of a vehicle, a oscillating sound of gasoline is generated when the vehicle turns, starts suddenly, or brakes suddenly.
Normal steel tanks have a full plate installed inside the tank to prevent the gasoline from shaking.

However, a problem with plastic tanks is that it is difficult to provide a plate similar to the buff-full plate of steel tanks, and therefore, the vibration noise of gasoline during operation cannot be avoided.

The present invention was made to solve these conventional problems, and its purpose is to provide a highly rigid plastic tank for vehicles that is easy to manufacture and can prevent the shaking noise of the liquid inside. It is about providing.

The present invention achieves the above object by providing at least a plurality of hollow buttful plates integrally with the tank body and in one direction of the tank body at positions away from the front, rear, left and right walls within the plastic tank body. The tank for a vehicle is further characterized in that at least one hollow buffle plate is provided in a direction intersecting with the one direction.

Hereinafter, one embodiment of the present invention will be specifically described with reference to the drawings.

FIG. 1 shows a vehicle tank according to an embodiment of the present invention.
This shows what is applied to fuel tanks for automobiles.

As shown in the figure, reference numeral 1 denotes the tank body of the fuel tank, which is a hollow rectangular plastic container. 2
is a buffle plate provided on the plastic tank body 1 to prevent the gasoline from shaking (undulating). This Batsuful plate 2
consists of a horizontally long raised body protruding from the internal bottom surface of the tank body 1, that is, a hollow raised body into which the outer bottom of the container is inserted, and two parallel raised bodies are arranged horizontally so as to equally divide the tank body into thirds. At the same time, at least one wire is provided in a direction intersecting (for example, orthogonal to) these horizontal wires, that is, in a vertical direction, connected to the two horizontal wires. The end portions 2A, 2A of the baffle plate 2 are set to end with a gap G between them and the side surface 1A of the tank body 1, so that gasoline can flow even when the amount is low. Reference numeral 3 denotes an introduction pipe provided at the upper end of the tank body 1 for injecting gasoline into the tank body.

The tank body 1, the bulk plate 2, and the introduction pipe 3 are integrally formed by blow molding.
It consists of a plastic fuel tank.

When manufacturing the above-mentioned plastic fuel tank, a parison is placed in a mold 5 in which a weir-like protrusion 4 is arranged in the shape of, for example, the letter "I" to form a buff-full plate inside, as shown in FIG. A hollow tube 6 of a certain length made of a thermoplastic compound called "Hydraulic" is clamped and mounted and formed by blow molding.

At this time, in order to increase the tank capacity, it is desirable to increase the protrusion height a and decrease the gap width b of the hollow buttful plate 2 formed in the tank. Vacuum suction holes 7 are provided in the protrusions 4 and their surroundings to blow air into the parison and simultaneously apply vacuum suction to form the parison.

Due to the mutual action of this vacuum suction and blowing, the parison 6 is brought into close contact with the inner surface of the mold, forming a sharp buffle plate 2, and a plastic fuel tank with a large tank capacity is obtained.

FIG. 4 shows another embodiment. In this embodiment, two buttful plates 2 are disposed laterally in parallel at the bottom, and other buffful plates 2 are disposed independently from each other in a direction that intersects them from above to the inside. In this case, it is advantageous when there is a large amount of gasoline and when there is rocking back and forth and left and right.

In each of the embodiments described above, the baffle plate 2 is projected from below the tank or from above and below the tank, but it may be projected from the side surface of the tank. In either case, an appropriate distance G should be provided between the end portion 2A of the buttful plate 2 and the side surface 1A of the tank body 1, as described above, to ensure the flow of the injected liquid and to increase the rigidity. Needless to say. The present invention is applicable not only to automobile fuel tanks but also to water or fuel tanks of other vehicles. The fuel tank may be made of plastic, but it is particularly desirable to use oil-resistant phenol resin or vinyl chloride resin.

As explained above, according to the present invention, the buttful plate is integrally formed within the container body by blow molding not only in one direction but also in the direction crossing this, so that it can be used only on the left and right sides of the vehicle. Therefore, it is possible to easily obtain a tank for a vehicle that can prevent the rocking sound of the liquid contained therein even when the liquid is rocked back and forth.

Further, according to the present invention, the hollow buff-full plate is formed integrally with the tank body at a position away from the front, rear, left and right walls within the plastic body, thereby increasing the bending rigidity of the tank itself.
Moreover, since these buttful plates are installed in different directions, it has great rigidity against bending from either direction, and has high fatigue strength against repeated stress, making it suitable for applications where there is a lot of vibration, such as vehicles. You can get the best tank.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway perspective view of an embodiment of the present invention;
FIG. 2 is a schematic sectional view of a molding die for molding a liquid container of the present invention, FIG. 3 is an enlarged sectional view of a protrusion of the molding die during molding, and FIG. 4 is a schematic sectional view of a molding die for molding a liquid container of the present invention. FIG. 3 is a partially cutaway perspective view of each liquid container showing the fuel tank of the embodiment. 1...tank body, 2...batsful plate,
3...Introduction pipe.

Claims (1)

[Claims] 1 At least a plurality of hollow buffled plates are provided in a direction away from the front and rear and left and right walls of the plastic tank body, integrally with the tank body and in one direction of the tank body, and furthermore, at least a plurality of hollow buffle plates are provided in a direction intersecting with the one direction. A vehicle tank characterized by being provided with one hollow buttful plate.