JPH0443373Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention relates to a fuel supply cutoff device for a vehicle suitable for cutting off the supply of fuel in a vehicle fuel tank to an engine in the event of a vehicle collision, etc. .

[Conventional technology]

For vehicles such as automobiles,
It is equipped with various fuel tanks as described in Publication No. 51618.

When feeding the fuel in the fuel tank to the engine, as shown in FIG.
The fuel inside the engine is supplied to the engine 13 via a suction tube 12 by operating a fuel pump 11.

Incidentally, the G generated by the fuel inside the fuel tank 10 is about 0.7 G during normal driving or a minor collision, but the G generated by the fuel inside the fuel tank 10 during a serious collision can be about 50 to 60 G. Are known.

[Problem that the invention attempts to solve]

However, in conventional vehicles, no means was taken to cut off the supply of fuel from the fuel tank 10 to the engine 13 in the event of a serious collision.
2 was damaged, there was a risk that fuel would leak from the suction tube 12.

[Purpose of invention]

The present invention has been made in view of the above-mentioned conventional problems, and its purpose is to provide a fuel supply cutoff device for a vehicle that can suppress leakage of fuel from the fuel piping system in the event of a collision. .

[Means for solving problems]

In order to achieve the above object, the present invention includes a cylindrical body and a coil spring provided inside the cylindrical body at a portion of the bottom of the fuel tank shell opposite to the tip of the suction tube opening disposed in the fuel tank shell. A support mechanism consisting of a plate to which a seal rubber is fixed is fixed, and protrusions formed at both ends of the plate removably engage claws formed at the top of the cylinder, and a predetermined value is applied to the plate. A pressure receiving plate that rotates against the biasing force of a coil spring when a pressure exceeding .

[Effect of invention]

When the pressure on the pressure receiving plate due to fuel movement exceeds a set value, such as during a collision, the pressure receiving plate rotates, and the rotation of the pressure receiving plate moves the shielding plate to close off the tip of the opening in the fuel tank of the suction tube. .

[Example of idea]

Hereinafter, embodiments of the present invention will be described in detail based on the drawings.

1 to 3 show the configuration of a preferred embodiment of the present invention.

In the above figure, the fuel tank shell 20 is provided with a suction tube 21, and the suction tube 21 is located at the bottom of the fuel tank shell 20.
A support mechanism 22 is fixed to a portion opposite to the opening tip 21A. This support mechanism 22 includes a cylindrical body 23, a coil spring 24 provided inside the cylindrical body 23,
It is composed of a plate 25, and the plate 25
Projections 25A and 25B formed at both ends of the cylinder body 23 are removably engaged with claws 23A and 23B formed at the top of the cylinder body 23. And this plate 25
A pressure receiving plate 27 is connected to the arm 26 via an arm 26. Further, a seal rubber 28 is fixed to the upper surface of the plate 25 as a shielding plate capable of closing the opening 21A at the tip of the suction tube 21.

The pressure receiving plate 27 can be rotated by the movement of the fuel in the fuel tank shell 20, and the pressure on the pressure receiving plate 27 is applied via the plate 25 to the coil spring 2.
4. When the pressure acting on the coil spring 24 exceeds a set value, rotation of the pressure receiving plate 27 is permitted and the pressure receiving plate 27 rotates. When the pressure receiving plate 27 rotates, the engagement between the projections 25A, 25B of the plate 25 and the claws 23A, 23B is released, and the plate 25 is pushed into the tip opening of the suction tube 27 by the biasing force of the coil spring 24. Move to 21A side. As a result, as shown in FIG.
1A, and the supply of fuel in the fuel tank shell 20 to the suction tube 21 is cut off. Therefore, even if the temporary fuel piping system is damaged during a collision, oil leakage from the suction tube 21 can be suppressed, and a vehicle fire during a collision can be prevented.

[Effect of idea]

As explained above, according to the present invention, the tip of the opening in the fuel tank of the suction tube is closed by the shielding plate as the pressure receiving plate rotates in the event of a vehicle collision. The excellent effects of suppressing leakage, preventing vehicle fires, and contributing to improved safety can be obtained.

[Brief explanation of the drawing]

Figure 1 is a side view showing one embodiment of the present invention;
Figure 3 is a plan view of the support mechanism; Figure 3 is a diagram for explaining the action when the pressure receiving plate of the device according to the present invention is opened; Figure 4 is a diagram for explaining the action when the suction tube is closed; FIG. 5 is a configuration diagram of a conventional fuel piping system. 20...Fuel tank shell, 21...Suction tube, 22...Support mechanism, 23...Cylinder body,
24...Coil spring, 25...Plate, 27...
...Pressure plate, 28... Seal rubber.

Claims (1)

[Scope of utility model registration request] A support consisting of a cylindrical body, a coil spring provided inside the cylindrical body, and a plate to which a seal rubber is fixed, located at the bottom of the fuel tank shell facing the tip of the suction tube opening disposed in the fuel tank shell. The mechanism is fixed, and the protrusions formed at both ends of the plate removably engage with the claws formed at the top of the cylinder, and when a pressure exceeding a set value is applied to the plate, the coil spring is activated. A fuel supply cutoff device for a vehicle, characterized in that a pressure receiving plate that rotates against the urging force of is connected via an arm.