KR100387717B1 - 2-way damper to prevent rapidly change againet sender resistance - Google Patents

Abstract

The present invention relates to a fuel transmission device inserted into a fuel tank.

The present invention extends the contactor rotatably connected to the float arm and the fixed shaft so as to contact the resistance unit installed in the fuel tank, and then connects the damping means which is damped using fuel to the extended contactor. In order to accurately measure the fuel level in the fuel tank, it is possible to accurately calculate the amount of fuel remaining in the fuel tank by preventing the rapid change of the fuel gauge from the float movement regardless of the fuel amount depending on the driving condition of the vehicle. Provided is a resistance change prevention device of a fuel level transmitter.

Description

2-way damper to prevent rapidly change againet sender resistance}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fuel transmission device inserted into a fuel tank, and more particularly, to extend a contact arm rotatably connected about a float arm and a fixed shaft to contact a resistor installed in the fuel tank. A fuel level transmitter that connects a damper that is damped using fuel to the contactor to prevent the rapid change of the fuel gauge from the float movement regardless of the fuel amount according to the driving state of the vehicle, thereby enabling accurate measurement of the fuel amount. The present invention relates to a device for preventing a sudden change in resistance.

As shown in FIG. 1, a fuel transmitter installed in a conventional fuel tank measures a float 1 and a float arm 2 that flow up and down according to the amount of fuel stored in the fuel tank, and the amount of fuel in the fuel tank is measured. A contactor 4 which rotates around a fixed shaft 4a with the float arm 2 so as to be in contact with the resistor 3 and the fuel gauge to display the amount of fuel in the fuel gauge. Consists of

However, in the conventional fuel transmission system, as shown in FIG. 1, when the vehicle makes a sharp turn or suddenly accelerates or brakes, the float 1 state in the fuel tank due to its own weight and viscosity of the fuel. The contactor 4, which rotates about the fixed shaft 4a, changes rapidly due to the rotation of the float arm 2, and thus the resistance value (AΩ → BΩ) of the resistor 3 changes. It has a disadvantage.

At this time, the fuel amount measurement state of the fuel gauge is also changed from the resistance value change of the resistance unit 3, so that the driver cannot accurately measure the fuel amount of the vehicle.

In addition, conventionally, the TRIP computer determines the amount of fuel in the fuel tank as a resistance value. When the resistance value changes (especially when the shape of the fuel tank is not symmetrical), the amount of fuel in the fuel tank cannot be read accurately and the remaining mileage is calculated. This has the problem of being made incorrectly.

Accordingly, the present invention has been made to solve the above-mentioned conventional problems, and an object of the present invention is to extend a contactor rotatably connected about a float arm and a fixed shaft so as to contact a resistance unit installed in a fuel tank. Then, by connecting the damping means that is damped by using fuel to the extended contactor, it is possible to accurately measure the fuel amount by preventing the sudden change of the fuel gauge from the float movement regardless of the fuel amount depending on the driving state of the vehicle. To prevent the rapid change of the resistance of the fuel level transmitter to accurately read the amount of fuel in the fuel tank and to calculate the remaining mileage accurately.

1 is a schematic view showing a structure of a fuel transmission system applied in the related art.

Figure 2 is an overall schematic view showing the structure of the resistance sudden change prevention device of the fuel amount transmitter in one embodiment of the present invention.

Figure 3 is a front view showing a combined state of the damper housing and the control valve configured in the resistance sudden change prevention device in one embodiment of the present invention.

Figure 4 a, b is a side schematic view showing a front and rear operating state of the control valve configured in the resistance sudden change prevention device.

※ Explanation of code for main part of drawing

One ; Float 2; Float arm

3; Resistance section 4; Contactor

4a; Fixed shaft 10; Connecting rod

10a; Hinge axis 20; piston

30; Damper housing 30a; Through hole

30b; Fuel passage hole 40; Control valve

41; First valve 42; Second valve

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

FIG. 2 is a schematic view showing the structure of a resistance sudden change prevention device of a fuel amount transmitter according to an embodiment of the present invention, and FIG. It is a front view showing the coupling state.

4A and 4B are side schematic views showing a front and rear operating state of a control valve of the resistance sudden change prevention device.

As shown in Figures 2 to 4, the float 1 and the float arm (2) up and down depending on the amount of fuel stored in the fuel tank, and the resistance to measure the amount of fuel in the fuel tank and transfer it to the fuel gauge A fuel amount transmission system comprising a portion (3) and a contactor (4) which rotates about a fixed shaft (4a) with a float arm (2) in contact with the resistance portion (3) to display the fuel amount with a fuel gauge. In

Extending the contactor 4 to a predetermined length, connecting the connecting rod 10 is made to flow in the left and right direction around the hinge axis (10a) to the end of the extended contactor (4),

One end of the connecting rod 10 is connected to the connecting rod 10 to connect the piston 20 for linear reciprocating movement in the left and right directions,

The piston 20 has a linear reciprocating motion in the interior of the damper housing 30 formed with a through hole (30a) and a fuel passage hole (30b) on one side,

One side of the damper housing 30 has a through hole 30a centered on the inner and outer sides of the damper housing 30 so as to vary the area of the fuel passage hole 30b according to the inflow amount of the fuel, when the float 1 goes up and down. After the damping force is set differently, the control valve 40 is formed to delay the sudden change of the resistance value according to the oil level (A, B) change in the fuel tank.

According to another aspect, the control valve 40 is composed of integral first and second valves 41 and 42 having different diameters,

The first valve 41 is positioned inside the through hole 30a formed at one side of the damper housing 30 to control the opening area of the through hole 30a and the fuel passage 30b. The second valve 42 is configured to be positioned outside the center of the through hole 30a formed on one side of the damper housing 30 to control the open area of the through hole 30a.

Referring to Figures 2 to 4 attached to the operation of an embodiment of the present invention configured as described above are as follows.

First, as shown in FIG. 2, when the oil level in the fuel tank suddenly changes from A to B while the vehicle is running, the float 1 generates a force descending to the B surface by gravity in response to the oil level change.

At this time, the float arm 2 connected to the float 1 and the contactor 4 connected to the float arm 2 by the fixed shaft 4a are rotated by a predetermined angle (right upper direction when viewed in the drawing). The connecting rod 10 connected to the hinge shaft 10a at the end of the contactor 4 may move the piston 20 according to the rotation angle of the float arm 2 and the contactor 4 by a predetermined distance. As long as the linear movement.

That is, the piston 20 is a linear movement in the inner direction from the inside of the damper housing 30 from the flow of the connecting rod 10, according to the linear movement of the piston 20 of the damper housing 30 The fuel present therein converts the falling force of the float 1 delivered to the piston 20 into fuel kinetic energy while being pushed into the fuel passage 30b formed in one side of the damper housing 30.

Here, the time T of the movement (Pa → Pb) according to the linear movement of the piston 20 is present, and at the same time, the resistance value of the resistor 3 changes from the movement of the contactor 4. The same time occurs.

At this time, the first and the second of the control valve 40 located in the inner and outer sides of the one side of the damper housing 30 according to the amount of fuel pushed from the linear movement of the piston 20 to the fuel passage hole 30b. The two valves 41 and 42 are also flow in the same direction as shown in Figure 4a,

The first valve 41 has an opening area of the through hole 30a and the fuel passage 30b inside each other with respect to the through hole 30a formed on one side of the damper housing 30 as the fuel flows. By making it different, the damping force when the float 1 descends is made large, and the sudden change of the resistance value according to the change of oil level (A-> B) in a fuel tank is delayed.

On the other hand, as shown in FIG. 2, when the oil level in the fuel tank suddenly changes from B to A while the vehicle is running, the float 1 generates a force rising to the A surface by gravity in response to the oil level change.

At this time, the float arm 2 connected to the float 1 and the contactor 4 connected to the float arm 2 by the fixed shaft 4a are rotated by a predetermined angle (upper left direction in the figure). The connecting rod 10, which is connected to the end of the contactor 4 by the hinge shaft 10a, has a predetermined distance to the piston 20 according to the rotation angle of the float arm 2 and the contactor 4. As long as you have a straight-line restoration.

That is, the piston 20 has a linear restoring motion in the outward direction from the inside of the damper housing 30 from the flow of the connecting rod 10, the damper housing according to the linear restoring motion of the piston 20 ( The fuel present in the interior of the 30 is discharged to the other side (connecting rod direction) of the damper housing 30.

Here, the time T 'of the movement Pb → Pa according to the linear restoring motion of the piston 20 is present, and at the same time, the resistance value of the resistance part 3 changes from the movement of the contactor 4. The same time is also generated.

At this time, the first and second valves 41 and 42 of the control valve 40 formed on one side of the damper housing 30 according to the fuel located outside the damper housing 30 are as shown in FIG. 4B. The movement is done in the same direction,

Through the full opening of the fuel passage 30b formed on one side of the damper housing 30, a large amount of fuel is introduced into the damper housing 30, thereby reducing the damping force when the float 1 rises. It is possible to delay the rapid change of the resistance value due to the change of oil level (B → A) in the fuel tank.

As described above, the present invention extends a contactor rotatably connected to a float arm and a fixed shaft so as to contact a resistor installed in a fuel tank, and then damping means for damping the fuel by using the extended contactor. By measuring the fuel level in the fuel tank, it is possible to accurately measure the amount of fuel in the fuel tank, such as to prevent the rapid change of the fuel gauge from the float movement regardless of the amount of fuel, depending on the driving condition of the vehicle. To provide effect.

The present invention is not limited to the above-described specific preferred embodiments, and various modifications can be made by any person having ordinary skill in the art without departing from the gist of the present invention claimed in the claims. Of course, such changes will fall within the scope of the claims.

Claims (2)

The float and float arm, a resistance unit for measuring the amount of fuel in the fuel tank and transmitting it to the fuel gauge, and a contactor rotating about a fixed axis of the float arm so as to contact the resistance unit and display the fuel amount with the fuel gauge. In the fuel amount transmission system made, Extending the connector to a predetermined length, connecting the connecting rod which flows in the left and right directions around the hinge axis to the end of the extended contact, One end of the connecting rod is connected to the connecting rod to connect the piston reciprocating linearly in the left and right directions, The piston has a linear reciprocating motion inside the damper housing having a through hole and a fuel passage formed on one side thereof, One side of the damper housing has a through hole centered on the inner and outer sides of the damper housing according to the amount of fuel flow in the fuel passage hole by changing the damping force when the up and down the float changes the oil level in the fuel tank And a control valve for delaying a sudden change in the resistance value according to the invention. The method of claim 1, The control valve is composed of the integral first and second valves having different diameters, The first valve is positioned inside the through hole formed on one side of the damper housing to control the opening area of the through hole and the fuel passage hole, and the second valve centers the through hole formed on one side of the damper housing. A device for preventing a rapid change in resistance of a fuel amount transmitter, characterized in that it is positioned outside to control the opening area of the through hole.