KR100295479B1 - Fuel shutoff valve of vehicle - Google Patents

Abstract

PURPOSE: A fuel shutoff valve of a vehicle is provided to prevent fuel from being leaked by stopping the operation of a fuel pump when a vehicle accident occurs. CONSTITUTION: A fuel inlet hole(112a) and a fuel outlet hole(112b) are formed in a cylinder body(112) such that the power supplied into a fuel pump(30) is shut off when a vehicle accident occurs. A pair of electrode insertion holes(112) and a pair of first ball insertion grooves(112d) are formed in the cylinder body(112). A cylinder cover(114) is coupled to a front of the cylinder body(112), thereby forming a cylinder(110). A pressing member(120) is inserted into the cylinder(110). A valve body(130) having an annular rod shape is inserted into the cylinder(110). The valve body(130) is formed with a fuel guiding slot(134) communicated with the fuel inlet hole(112a) and the fuel outlet hole(112b). A position fixing member(140) is coupled to an elastic member(142) through a fixing ball(144). A pair of metal electrodes(150) are press-fitted into an electrode insertion hole(112c) formed in the cylinder body(112).

Description

Car fuel shutoff valve

The present invention relates to a fuel cutoff valve of a vehicle, and more particularly, when a collision accident occurs in a driving vehicle, the operation of the fuel pump is stopped and the flow of fuel supplied from the fuel tank to the engine is blocked so that a fire or explosion It relates to a fuel cutoff valve of a vehicle to prevent an accident from occurring.

In general, the fuel device of a vehicle is roughly the driver when the driver turns the key of the vehicle to the starting position as shown in Figure 1 attached to the power supply 20 to the fuel pump 30 to the fuel in the fuel tank 10 Is injected into the engine 50 by the injection valve 40.

In addition, the fuel device configured as described above detects the amount of air sucked into the engine, the engine rotation speed, the throttle valve opening, and the like, generates an electric signal, and sends it to an engine control unit (not shown). Thereby, a controller (not shown) for controlling the fuel injection timing and injection amount is provided.

However, the conventional fuel device as described above does not have a fuel shutoff device that can block the flow of fuel supplied to the fuel pipe in an accident such as a frontal crash, so that the fuel pipe is damaged due to the occurrence of an accident, or is started after an accident. If continued, the fuel pump is continuously operated to supply and leak fuel, causing a serious accident such as a fire and explosion.

The present invention is to solve the above problems, the object of the fuel cutoff valve of the vehicle to prevent the leakage of fuel by the fuel pipe is blocked at the same time the operation of the fuel pump is blocked at the time of the front collision of the vehicle. It is to provide.

In order to achieve the above object, the present invention is a fuel device of a vehicle in which the fuel of the fuel tank is sucked by the fuel pump and supplied to the engine through the fuel pipe, it is supplied to the fuel pump in the event of a front collision of the vehicle A pair of electrode insertion holes are drilled on the outer circumferential surface of the body having a cylindrical shape so that the power is cut off and the flow of fuel flowing into the fuel pipe is cut off and coaxial with the outer circumferential surface. A cylinder comprising a cylinder body in which a pair of first ball insertion grooves are recessed, a cylinder cover fastened to the front end of the cylinder body, and a guide hole is drilled in the center thereof, and inserted into the cylinder and then moved back and forth to the guide hole. On the rear side of the piston and piston that is moved back and forth to the inner peripheral surface of the cylinder to be movable Pressed rod consisting of the rod to be installed and the pressing handle formed on the rear end of the rod and the corrugated rubber material is fitted on the outer circumference of the rod is fixed to one side of the rod of the cylinder cover so as to have a certain buffering properties in the front and rear movement of the pressure rod A pressure member provided with a buffer member; A valve body formed in an annular rod shape to be inserted into the cylinder and having a fixed member insertion hole penetrated at one end thereof, and an oval shape fuel flow groove being indented so that the fuel inlet hole and the fuel outlet hole communicate on the outer circumferential surface thereof; A position fixing member coupled to both ends of an elastic member which is inserted into the fixing member insertion hole of the elastic member having a compression spring so as to be elastically rebounded in the vertical direction only when a car accident occurs. A second ball insertion groove is formed at the bottom to insert the ball, characterized in that consisting of a pair of metal electrodes pressed into the electrode insertion hole.

1 is a schematic system diagram showing a configuration of a fuel apparatus of a conventional vehicle;

2 is a schematic system diagram showing an operation flow of a fuel cutoff valve of a vehicle according to the present invention;

3 is an exploded perspective view showing a fuel cutoff valve of a vehicle according to the present invention;

4 is a cross-sectional view showing an operating state of a fuel cutoff valve of a vehicle according to the present invention.

Explanation of symbols on the main parts of the drawings

10: fuel tank, 20: power,

30: fuel pump, 40: injection valve,

50: engine, 100: fuel shutoff valve,

110: cylinder, 112: cylinder body,

112a: fuel inlet, 112b: fuel outlet,

112c: electrode insertion hole, 112d: first ball insertion groove,

114: cylinder cover, 120: pressing member,

122: pressure rod, 124: buffer member,

130: valve body, 140: position fixing member,

142: elastic member, 144: fixed ball,

150: metal electrode, 150a: first metal electrode,

150b: second metal electrode, 152: second ball insertion groove.

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings.

Figure 2 is a schematic system diagram showing the operating flow of the fuel cutoff valve of the vehicle according to the invention, Figure 3 is an exploded perspective view showing a fuel cutoff valve of the vehicle according to the invention, Figure 4 is a view of the vehicle according to the invention It is sectional drawing which shows the operation state of a fuel shutoff valve, and demonstrates the same code | symbol about the same part as before.

As shown in the drawing, in the fuel device of a vehicle in which the fuel of the fuel tank 10 is sucked by the fuel pump 30 and supplied to the engine 50 through the fuel pipe 12, when a front collision accident of the vehicle occurs. The fuel inlet hole 112a and the fuel outlet hole 112b on the outer circumferential surface of the body having a cylindrical shape so that the power supplied to the fuel pump 30 is cut off and the flow of fuel flowing to the fuel pipe 12 is blocked. The cylinder body 112 and the cylinder body in which a pair of electrode insertion holes 112c are drilled so as to be coaxial with the outer circumferential surface and a pair of first ball insertion grooves 112d are inserted so as to correspond on one inner circumferential surface thereof. A cylinder 110 composed of a cylinder cover 114 fastened to the front end of the 112 and the guide hole 114a is drilled in the center thereof, and inserted into the cylinder 110 to move back and forth in the guide hole 114a. Press member 120 and configured to be, An elliptical shape is formed in a round bar shape to be inserted into the inside of the 110 and the fixing member insertion hole 132 penetrates at one end thereof, and the fuel inlet hole 112a and the fuel discharge hole 112b communicate on the outer circumferential surface thereof. Both ends of the valve body 130 in which the fuel flow groove 134 is formed and the elastic member 142 having a predetermined elastic force to be inserted into the fixing member insertion hole 132 of the valve body 130 to elastically rebound in the vertical direction. Position fixing member 140 and the fixed ball 144 is formed in the second ball insertion groove 152 is formed at the bottom so that the fixed ball 144 of the position fixing member 140 is formed in the electrode insertion hole A fuel shutoff valve 100 composed of a pair of metal electrodes 150 pressed into the 112c is configured.

In the coupling portion of the cylinder body 112 and the cylinder cover 114 of the cylinder 110, flange portions 112e and 114b each having a plurality of bolt insertion holes 112f and 114c are formed, and oil leakage is The packing 116 is inserted so as to be prevented, while the fuel inlet hole 112a of the aircraft cylinder body 112 is connected to the fuel pike 12 connected to the fuel tank 10, and the engine outlet hole 112b is connected to the engine. A fuel pipe 12 connected to 50 is connected.

In addition, the outer surface of the cylinder cover 114 is a buffer member engaging portion 114d is formed with a locking groove 114e formed in the concave inward.

The fuel flow groove 134 of the valve body 130 is recessed in a diagonal direction so that interference does not occur during piping work of the fuel pipe 12 connected to the fuel inlet hole 112a and the fuel discharge hole 112b. It is desirable to avoid.

The elastic member 142 of the position fixing member 140 is composed of a compression spring having a predetermined elastic force so that the valve body 130 is not moved forward when the vehicle is suddenly stopped, and is moved only when a car accident occurs.

The pressing member 120 is a piston 122a which is moved back and forth to the inner circumferential surface of the cylinder 110 and the rod 122b protruding on the rear surface of the piston 122a and the housework handle formed at the rear end of the rod 122b. One side is fixed to the locking groove 114e of the cylinder cover 114 to have a constant buffering force when the pressing rod 122 and the pressing rod 122 is moved back and forth, and the outer periphery of the rod 112b. It is composed of a cushioning member 124 of the corrugated rubber material fitted to.

The metal electrode 150 includes a first metal electrode 150a connected to a battery power supply side and a second metal electrode 150b connected to a fuel pump 30.

On the other hand, the fuel cut-off valve 100 configured as described above is installed in the longitudinal direction of the vehicle so that the pressure member 120 side toward the front of the vehicle, the installation position of the vehicle is severely deformed during the front collision of the vehicle The corresponding sin at the bottom of the center pillar (not shown) that does not occur is preferably installed in the underbody, but is not limited thereto.

In the figure, reference numeral 118 is a fastening bolt for fastening the cylinder cover 114 to the cylinder body 112.

The operation of the present invention as described above is as follows.

As shown in FIG. 2 to FIG. 4, the valve body 130 is inserted into the first cylinder 110 and the position fixing member 140 is inserted into the fixing member insertion hole 132 of the valve body 130. When the fixing ball 144 is inserted into the second ball insertion groove 152 formed in the metal electrode 150 to operate the ignition key in the starting state, the battery power is supplied to the first metal electrode 150a and the position fixing member. 140 is connected to the second metal electrode 150b, so that the fuel pump 30 connected to the second metal electrode 150b is operated to suck the fuel, and the sucked fuel rides through the fuel pipe 12. The fuel inlet 112a flows through the fuel flow groove 134 of the valve body 130 and is discharged to the fuel discharge hole 112b so that the injection valve 40 injects fuel into the engine 50.

When a front collision occurs while driving the vehicle started with the engine as described above, the inertia force forward is applied to the fuel cutoff valve 100 installed at the bottom of the center pillar so that the pressure member 120 faces the front of the vehicle. The valve body 130 therein is moved forward by riding on the inner circumferential surface of the cylinder 110 such that the fixing ball 144 of the position fixing member 140 is inserted into the first ball insertion groove 112d.

That is, since the position fixing member 140 is moved forward together with the valve body 130, the power that was conducted from the first metal electrode 150a to the second metal electrode 150b is cut off, so that the fuel pump 30 Since the operation is stopped and the fuel flow groove 134 is moved forward, the fuel supplied to the fuel inlet hole 112a through the fuel pipe 12 is no longer supplied and is blocked.

Therefore, since the fuel in the fuel tank 10 is no longer discharged and is blocked, a fire or an explosion caused by a fuel leak due to the collision of the vehicle is prevented.

On the other hand, in the state where the flow of fuel is blocked as described above, when the engine is to be restarted by applying an external force to the pressing knob (122c) of the pressing member 120, the piston (122a) is the valve body 130 Is pushed backward, so that the fixing ball 144 of the position fixing member 140 is inserted into the second ball insertion groove 152 of the metal electrode 150 again, so that the battery power source is connected to the first metal electrode 150a. The second metal electrode 150b can be supplied to the fuel pump 30. In this state, the key may be operated by starting the key again.

According to the fuel cutoff valve of the vehicle according to the present invention as described above, when an accident such as a front collision accident of the vehicle occurs, the valve body is moved to the front inside the cylinder at the same time the position fixing member is moved to the front to supply to the fuel pump It is a very useful invention that prevents fire and explosion accidents by preventing the leakage of fuel because the power is cut off and the operation of the fuel pump is stopped, and the flow of the fuel flow groove is moved forward. to be.

Claims (1)

In the fuel device of a vehicle in which the fuel of the fuel tank 10 is sucked by the fuel pump 30 and supplied to the engine 50 through the fuel pipe 12, the fuel pump 30 at the time of the front collision of the vehicle occurs. The fuel inlet hole 112a and the fuel discharge hole 112b are drilled on the outer circumferential surface of the body having a cylindrical shape so that the power supplied to the power supply is blocked and the flow of fuel flowing to the fuel pipe 12 is blocked. A pair of electrode insertion holes 112c are formed to be coaxial, and a cylinder body 112 in which a pair of first ball insertion grooves 122d are recessed to correspond to one inner peripheral surface thereof, and the front end of the cylinder body 112. A cylinder (110) fastened to the cylinder cover (114) with a guide hole (114a) perforated in the center; A rod 122b which is inserted into the cylinder 110 and protrudes on the rear surface of the piston 122a and the piston 122a which is moved back and forth on the inner circumferential surface of the cylinder 110 so as to be movable back and forth in the guide hole 114a. And a side of the pressing rod 122 formed of the pressing handle 122c formed at the rear end of the rod, and one side of the pressing groove 122e of the cylinder cover 114 so as to have a constant buffering property when the pressing rod 122 moves forward and backward. A pressing member 120 having a cushioning member 124 of corrugated rubber material fixed and fitted to an outer circumference of the rod 122b; It is formed in a round bar shape so as to be inserted into the cylinder 110, the fixing member insertion hole 132 penetrates through one end thereof, and the fuel inlet hole 112a and the fuel outlet hole 112b communicate with each other on an outer circumferential surface thereof. A valve body 130 having a fuel flow groove 134 having a shape formed therein; Fixed ball 144 at both ends of the elastic member 142 is inserted into the fixing member insertion hole 132 of the valve body 130 and composed of a compression spring having a predetermined elastic force to elastically rebound in the vertical direction only when a car accident occurs. A position fixing member 140 formed with a coupling; The second ball insertion groove 152 is formed at the bottom so that the fixing ball 144 of the position fixing member 140 is inserted into a pair of metal electrodes 150 press-fitted into the electrode insertion hole 112c. A fuel shutoff valve for an automobile.

Images