KR19980075279A - Radiator Cap High Temperature Path and Locking Device in Automotive - Google Patents

Abstract

The present invention discloses a radiator cap high temperature path and locking device for an automobile. The disclosed invention comprises a bimetal switch (3) contacted by a coolant temperature in the radiator (1); An electronic control unit (4) for giving a control signal in accordance with the contact point of the bimetal switch (3); A warning light (5) which is lit by a control signal of the electronic control unit (4) and installed in the instrument panel; An electromagnet (6) which is charged and charged by a control signal of the electronic control unit (4), and is installed on the injection hole (11) side of the radiator (1); A locking pin (8) movably fitted to the electromagnet (6) and pushed by repulsive force when a voltage is applied to the electromagnet; And a locking groove 8 formed in each of the injection hole 11 and the cap 2 fastened to the injection hole 11 as a groove into which the locking pin 7 is fitted.

Description

Radiator Cap High Temperature Path and Locking Device in Automotive

The present invention relates to a radiator cap high temperature warning and locking device of an automobile, and more particularly, to warn the state that the cap for the injection of the coolant fastened to the radiator radiating the coolant for the engine cooling is a high temperature, the coolant is a certain temperature The above relates to a locking device which is not opened.

Generally, a cooling system provided in a motor vehicle is a device which cools an engine and keeps it at a suitable temperature. In general, the temperature of the combustion gas reaches 2,000 ° C. or more, and a significant amount of this heat is conducted to cylinders, cylinder heads, pistons, valves and the like.

However, when the temperature of such a portion becomes excessively high, the strength of the component material is lowered, resulting in failure or shortening of life, and also worsening of combustion, resulting in knocking or premature ignition, and thus output of the engine is lowered.

In addition, in the incomplete cooling state, failure of the lubrication function such as breakage of the oil film on the cylinder wall, abnormal wear and seizure due to deterioration of the oil, etc. may occur.

On the other hand, if too much of the heat generated from combustion, the amount of heat lost by cooling is low, so the engine thermal efficiency and fuel consumption increases, so the engine temperature must be maintained properly.

Cooling systems that play this role include air cooling, which cools directly to outside air, and water cooling, which cools by circulating the cooling water into the engine.

The water-cooled cooling system is briefly described as follows.

The cylinder block constituting the engine and the cylinder head are respectively provided with a water jacket, which is a passage for cooling water. The water jacket is connected to an outlet pipe attached to the side of the engine, which is connected by a hose to a radiator that lowers the temperature by exchanging coolant with outside air. In addition, one side of the radiator is provided with a cooling fan for forced suction of the outside air to the radiator. Another hose is connected to the radiator and an inlet pipe is connected to the hose. The inlet pipe is connected to a water pump mounted on the engine and connected to the water jacket to force circulation of the cooling water. The postponement and the water pump are driven to be driven only by starting the engine.

That is, when the engine is started, the water pump is driven so that the coolant passes through the water jacket in the engine to lower the temperature of the engine, while the heat-exchanged coolant flows into the radiator through the outlet pipe and the hose. The high temperature cooling water introduced into the radiator is heat exchanged with the ambient air sent out by the cooling fan to lower the temperature, and then flows back into the water pump through the hose and the inlet pipe, and then recycles as described above.

As described above, the coolant for circulating and cooling the engine is to be imported through an injection hole formed in the upper portion of the radiator 1, as shown in FIG. 1, and the cap 2 is fastened to the injection hole. In other words, when the cooling water is insufficient due to vaporization of the cooling water, the cap 2 can be opened to replenish the cooling water.

However, when running for a long time in the summer, the engine is overheated, and thus the cooling water is rapidly evaporated and the cooling water is insufficient. In this case, the driver should stop the vehicle, then open the cap 2 and replenish the coolant.

However, at this time, since the coolant is very hot, there are often cases where a severe burn is caused when the cap 2 is heated even though the cap 2 is very hot. Of course, the warning mark is engraved on the cap 2 so as not to be burned as described above, but a driver who is not familiar with the engine cooling method such as a novice driver may open the cap 2 while holding the cap 2 even though the coolant is hot. There were many cases of severe burns.

In particular, even an experienced driver who is familiar with the engine cooling method has cooled the cap 2 so as not to be burned by heat exchange with the air, but the coolant in the radiator 1 is not aware that it is in a high temperature state, so the cap 2 ), Hot cooling water was ejected through the injection port, resulting in burns.

Therefore, the present invention warns the driver not to open the cap along the temperature of the coolant, and even if the temperature of the cap is lowered enough to be touched, the cap does not open if the temperature of the coolant does not exceed a certain temperature. It is an object of the present invention to provide a radiator cap high temperature warning and locking device for a vehicle which can fundamentally prevent a situation of being burned by the coolant.

1 is a view showing a radiator with a conventional cap installed

Figure 2 shows a radiator cap high temperature warning and locking device according to the present invention;

Figure 3 is a plan view showing the arrangement of the locking groove formed in the radiator cap and the inlet

Figure 4 is a cross-sectional view showing the operation structure of the locking pin which is the main part of the present invention

5 is a view showing a radiator cap formed with a locking groove which is a main part of the present invention;

Explanation of symbols on the main parts of the drawings

1: Radiator 2: Cap

3: Bimetal Switch 4: Electronic Control Unit

5: warning light 6: electromagnet

7: Locking Pin 8: Locking Groove

11: Inlet

The present invention to achieve the above object, the bimetal switch contacted by the cooling water temperature in the radiator; An electronic control unit for giving a control signal in accordance with a contact of the bimetal switch; A warning lamp that is lit by a control signal of the electronic control unit and installed in the instrument panel; An electromagnet that is charged and charged by a control signal of the electronic control unit, and is installed on the injection port side of the radiator; A locking pin movably inserted into the electromagnet and pushed by a repulsive force when a voltage is applied to the electromagnet; And a locking groove into which the locking pin is fitted, the locking groove being formed in each of the injection hole and the cap fastened to the injection hole.

According to the configuration of the present invention described above, when the temperature of the coolant is a certain temperature or more, the bimetal switch is contacted, the warning lamp provided on the instrument panel is turned on by the electronic control unit, and the electromagnet is charged to the opposite pole of the locking pin so that the locking pin is By entering the locking groove, the driver can see the warning light to know that the radiator cap is hot, and even if the warning light has not been opened, the radiator cap cannot be opened, thereby preventing burns caused by high temperature coolant. do.

EXAMPLE

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

Figure 2 is a view showing a writer cap high temperature warning and locking device according to the present invention, Figure 3 is a plan view showing the arrangement of the locking groove formed in the radiator cap and the inlet, Figure 4 is a locking pin of the main part of the present invention Figure 5 is a cross-sectional view showing the operation structure, Figure 5 is a view showing a radiator cap formed with a locking groove which is a main part of the present invention.

For reference, in the description of the configuration of the present embodiment, the same parts as in the prior art described at the beginning of the specification are omitted and repeated descriptions are mainly described in order to avoid duplication of description. use.

As shown in FIG. 2, a bimetal switch 3 is attached to the upper bottom surface of the radiator 1 when the temperature of the cooling water reaches a predetermined level or more. The bimetal switch 3 is connected to the electronic control unit 4 so that a contacted signal is transmitted to the electronic control unit 4. The electronic control unit 4 transmits a control signal to the warning lamp 5 provided in the instrument panel according to the contact point of the bimetal switch 3 to be turned on.

On the other hand, when the temperature of the cooling water is equal to or higher than a certain level, an apparatus is provided to lock the radiator cap 2 from being opened. That is, the electromagnet 6 which is supplied with electric power from the battery by the control signal of the electronic control unit 4 and is charged is installed on the side of the cap 2. The locking pin 7 is inserted into the electromagnet 6 so as to be movable. In particular, the locking pin 7 is pulled by the attraction force in the same pole as the electromagnet 6 when no power is supplied to the electromagnet 6. When the electric power is supplied to the electromagnet 6, the electromagnet 6 is charged with the locking pin 7 and the opposite electrode to push the locking pin 7.

In this way, a locking groove 8 into which the locking pin 7 pushed by the repulsive force is inserted is formed in each of the injection port 11 of the radiator 2 and the cap 2 fastened to the injection port 11. In particular, as shown in FIG. 3, when the cap 2 is fastened to the inlet 11, the upper surface of the cap 2 and the radiator 1 is provided such that the locking grooves 8 are in a coincidence state. The marking is stamped at a position corresponding to the position of each locking groove 8. In addition, in order to increase the matching margin of each locking groove 8, as shown in Figure 5, the length of the locking groove 8 formed in the cap 2 is longer than the locking groove of the injection hole 11, It extends laterally and is formed.

Hereinafter, the operation of the present embodiment configured as described above will be described in detail with reference to FIG. 4.

When the engine start is stopped to replenish the coolant, when the temperature of the coolant reaches a certain level or more, the bimetal switch 3 is contacted and the warning lamp 5 is turned on by the control signal of the electronic control unit 4. Therefore, the driver can know that the temperature of the coolant, that is, the cap 2 is in a high temperature state, when the warning light 5 is turned on, so that the cap 2 is not opened. The operator waits until the coolant temperature drops below a certain level.

On the other hand, when the bimetal switch 3 is in a contact state, electric power is supplied to the electromagnet 6 by the control signal of the electronic control unit 4, so that the electromagnet 6 and the locking pin 7 move to the opposite pole. It is charged. Therefore, the locking pin 7 is pushed out by the repulsive force and is inserted into the locking groove 8 so that the locking pin 7 is locked in the state in which it is fastened to the injection hole 11 of the cap 2.

Therefore, even if the driver does not recognize the state in which the warning light 5 is turned on, even if the driver tries to open the cap 2 cooled first by heat exchange with air, the cap 2 cannot be opened. That is, since the cooling water is not cooled and the bimetal switch 3 is in contact, the cap 2 cannot be opened by the locking pin 7 inserted into the locking groove 8.

As described above, according to the present invention, when the temperature of the coolant is above a certain level, the warning lamp 5 provided on the instrument panel is turned on so that the driver can know that the cap 2 is in a hot state, so as to open the cap 2. You can prevent a burn from touching your hand.

Furthermore, even when the warning lamp 5 is not recognized, even when the cap 2 that has been cooled first is opened by heat exchange with air, the locked cap 2 cannot be opened. The severe burns can also be prevented in advance.

On the other hand, the present invention is not limited to the above-described specific preferred embodiments, and various changes can be made by those skilled in the art without departing from the gist of the invention claimed in the claims. will be.

Claims (1)

A bimetal switch contacted by the coolant temperature in the radiator; An electronic control unit for giving a control signal in accordance with a contact of the bimetal switch; A warning lamp that is lit by a control signal of the electronic control unit and installed in the instrument panel; An electromagnet that is charged and charged by a control signal of the electronic control unit, and is installed on the injection port side of the radiator; A locking pin movably inserted into the electromagnet and pushed by a repulsive force when a voltage is applied to the electromagnet; And a locking groove formed in each of the injection hole and the cap fastened to the injection hole as the groove into which the locking pin is fitted.