KR20010069563A - Automatic oil changing apparatus for a auto transmission of automobile - Google Patents

Abstract

PURPOSE: An automatic oil exchanger for an automatic transmission of a vehicle is provided to easily exchange oil without lifting a vehicle or turning off an engine by automatically changing an oil passage when a feed line and a drain line are not correctly connected to an oil input port and a drain port of the automatic transmission. CONSTITUTION: An automatic oil exchanger consists of an oil line changeover unit(20); a solenoid valve(32) stopping discharging oil while the pressure of an automatic transmission(10) is firstly checked by being connected to a drain line(18) of the oil line changeover unit; a used oil draining tank(34) connected to the rear end of the solenoid valve; a motor pump(46) feeding oil from a feed line(16) of the oil line changeover unit; a new oil feeding tank(44) connected to the rear end of the motor pump; a solenoid valve(48) opened when the pressure of the automatic transmission is firstly checked and closed when oil is drained or fed, between the drain line and the feed line; and a manometer(49) checking the oil pressure of the automatic transmission by being connected to the solenoid valve in serial. Herein, the oil line changeover unit consists of the feed line and the drain line respectively connected to an oil input port(12) and a drain port(14) of the automatic transmission. Two-way solenoid valves(22,24,26,28) are installed on both lines in the opposite direction of an oil passage and thus, oil is normally discharged and fed during a right connection. However, the oil passage is changed during a reverse connection.

Description

AUTOMATIC OIL CHANGING APPARATUS FOR A AUTO TRANSMISSION OF AUTOMOBILE}

The present invention relates to a device for automatically replacing the oil for auto trasmission (auto trasmission) of the vehicle, and more particularly, the connection between the supply line and the discharge line of the automatic oil exchange device connected to the oil inlet and outlet of the automatic transmission If anything goes wrong, the oil line is automatically converted to facilitate the replacement of the automatic transmission oil.

In general, automotive automatic transmission contains the oil for the operation of the torque converter and the mission. Since the oil must be replaced periodically, the automatic automatic oil changer is usually used for the convenience of oil change.

The above-described automatic oil exchange apparatus is disclosed in Utility Model Registration No. 126763, and the automatic oil exchange apparatus filed by the present applicant is disclosed in Utility Model Registration No. 171413 by improving the structure of the utility model.

However, in the conventional automatic automatic oil changers, in order to normally supply fresh oil and discharge the trough, the supply line of the automatic oil changer is connected to the inlet of the automatic mission, and the discharge line of the automatic oil changer is connected to the outlet of the automatic mission. It should be connected correctly (hereinafter referred to as forward connection and reverse connection when reverse connection), but it is not easy for the worker to distinguish them properly. In this case, in order to change the oil line, it is inconvenient to turn off the vehicle and remove the supply line and the discharge line of the automatic oil changer from the auto mission and then reconnect the vehicle to start the vehicle again. In particular, in the case of a car that needs to be removed by lifting the car to the lift was a lot of trouble.

In addition, the conventional automatic oil changers have a problem in that too much new oil is diluted with the manger inside the mission because the manger is discharged at the same time as the supply of the fresh oil. If there is a difference between the preset oil there is a problem that can not be accurately oiled because there is no function to fine-tune it. In particular, the mission oil checker and the vehicle without level gauge (Musso, Lanos), etc., have no way of accurately checking the amount of oil change after oil change.

The present invention has been made to solve the above problems, the object of the present invention is that the supply line of the automatic oil changer is not properly connected to the filling port of the automatic transmission, or the discharge line of the automatic oil changer and the outlet of the automatic transmission Even if it is not connected correctly, the flow path of the automatic oil changer is automatically converted and the flow path of the supply and discharge lines of the automatic oil changer is connected with the flow path of the oil inlet and the discharge port of the automatic mission. It allows for easy oil changes without lifting up or turning off the car.

In addition, another object of the present invention is to prevent the supply of fresh oil until the oil is discharged to some extent, so as to suppress the supply of too much fresh oil at the time of oil exchange.

In addition, another object of the present invention to provide an automatic oil exchange apparatus that can be finely adjusted to match the initial setting amount, the supply amount of new oil and the discharge of the trough.

In addition, another object of the present invention is to automatically perform the oil change operation, by notifying the completion of the operation by buzzer sound like a manual oil changer so as not to waste the inconvenience and time of manual operation of the entire replacement operation process, the operator can safely Its purpose is to allow you to do other work while you are exchanging.

In addition, vehicle models without oil spots and level gauges accurately display the amount of discharge and the amount of injection on the panel, thereby eliminating anxiety.

1 is a circuit diagram of a state that can check the oil pressure of the initial auto-mission in a state in which the automatic oil change device is connected in the forward direction according to the present invention.

Figure 2 is a circuit diagram of the state of the discharge of the trough and the supply of fresh oil in a state in which the automatic oil exchange apparatus according to the present invention is connected in the forward direction.

Figure 3 is a circuit diagram of a state in which the oil pressure of the first automatic transmission can be checked by converting the flow path when the automatic oil exchange apparatus according to the present invention is connected in the reverse direction.

4 is a circuit diagram of a state in which the automatic oil exchange device according to the present invention is connected in the reverse direction to discharge the trough and to supply new oil in a state in which a flow path is converted.

Figure 5 is a plan view of a panel that can know the operating state of the automatic oil change apparatus according to the present invention.

FIG. 6 is a circuit diagram having the same function as FIG. 1 as another embodiment of the present invention; FIG.

FIG. 7 is a circuit diagram having the same function as FIG. 2 as another embodiment of the present invention; FIG.

FIG. 8 is a circuit diagram having the same function as FIG. 3 as another embodiment of the present invention. FIG.

FIG. 9 is a circuit diagram having the same function as FIG. 4 as another embodiment of the present invention. FIG.

* Explanation of symbols for the main parts of the drawings

DESCRIPTION OF SYMBOLS 10 Automated 12 Oil supply port 14 Outlet port 16 Supply line 18 Outlet line 20 Oil line conversion part 22, 24, 26, 28, 32, 48 Two-way solenoid valve 30, 40 Indicator 34 Oil drain tank 36, 42: flow meter 38: check valve 44: fresh oil supply tank 46: motor pump 49: pressure gauge

The present invention is a device for automatically changing the oil of the auto mission of the vehicle, the discharge line and the supply line of the automatic oil changer to each of the double line, each of the double line is connected to the filling and discharge port of the auto mission one by one Two-way solenoid valve is installed in each double line so that the flow direction is reversed, and oil is discharged and supplied in the forward connection, and the oil converts the flow by changing the direction of the two-way solenoid valve of the discharge line and supply line in the reverse connection A line converter; A solenoid valve connected to the discharge line of the oil line converting unit and blocking the discharge of oil when the pressure of the first automatic transmission is checked; A trough discharge tank connected to the rear end of the solenoid valve; A motor pump connected to a supply line of the oil line converter to supply oil; A new oil supply tank connected to a rear end of the motor pump; A solenoid valve mounted between the discharge line and the supply line and opened when the pressure of the first automatic transmission is checked and shut off when the discharge and supply of oil are started; It is made of a pressure gauge connected in series with the solenoid valve to check the oil pressure of the automatic transmission.

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

1 is a circuit diagram of a state capable of checking the oil pressure of the initial auto-mission in a state in which the automatic oil exchange apparatus is connected in the forward direction, Figure 2 is a state in which the automatic oil exchange apparatus according to the present invention is connected in the forward direction Figure 3 is a circuit diagram of the discharge and supply of the trough, Figure 3 is a circuit diagram of a state that can check the oil pressure of the first automatic transmission by converting the flow path when the automatic oil exchange device according to the present invention is connected in the reverse direction, 4 is a circuit diagram of a state in which the automatic oil exchange apparatus according to the present invention is connected in the reverse direction to discharge and supply the trough in a state in which a flow path is converted, and FIG. 5 shows an operation state of the automatic oil exchange apparatus according to the present invention. Top view of a panel.

One embodiment of the present invention relates to a device for automatically replacing the oil of the auto-mission of the vehicle, when the hydraulic circuit of the automatic oil exchange device is described in the forward connection with the auto-mission as follows.

As shown in Figs. 1 and 2, one side of the automatic transmission 10 is provided with an oil filling port 12 and an outlet 14 of oil. The filling port 12 and the discharge port 14 connect the supply line 16 and the discharge line 18 of the automatic oil exchange device, and the supply line 16 and the discharge line 18 and the filling hole of the automatic mission 10 are connected. An oil line converting section 20 is provided between the 12 and the outlet 14 to connect.

The oil line converting unit 20 has a supply line 16 and a discharge line 18 of the automatic oil changer, respectively, as a double line, and each double line is provided at the oil filling hole 12 and the discharge port 14 of the automatic transmission. Two-way solenoid valves 22 and 24 are mounted on the double line of the discharge line 18 so that the flow direction is reversed. In the case of the forward connection, the solenoid valve 22 is normally open. State and the solenoid valve 24 is in a normal close state. In the double line of the supply line 16, two-way solenoid valves 26 and 28 are mounted so that the flow direction is reversed. In the case of the forward connection, the solenoid valve 26 is normally closed. The solenoid valve 28 is in a normal open state.

The discharge line 18 connected to the rear side of the oil line conversion unit 20 is equipped with an indicator 30 for displaying the flow of oil discharged, the rear side of the two-way solenoid valve 32 to open and close the discharge line And discharges the trough from the auto-mission 10 to the trough discharge tank 34, and the flowmeter 36 for measuring the discharge of the trough is provided to the rear side of the solenoid valve 32. I wear it.

The supply line 16 connected to the rear side of the oil line converting unit 20 is equipped with a check valve 38 to prevent the back flow of oil, and the flow of oil supplied to the rear side of the check valve 38. It is equipped with an indicator (40) to display, the rear side is equipped with a flow meter (42) for measuring the supply amount of fresh oil, the rear side of the flow meter is a motor pump for pumping oil to the fresh oil supply tank (44) 46 is attached.

Between the supply line 16 and the discharge line 18 is equipped with a solenoid valve 48 which is opened when the oil pressure of the first automatic transmission 10 is checked and shut off when oil discharge and supply are started. A pressure gauge 49 is mounted between the solenoid valve 48 and the supply line 16.

3 and 4, a state in which the supply line 16 and the discharge line 18 are connected as opposed to the forward connection state of the automatic oil exchange device may be defined as a reverse connection state. If the difference is the same, except that the solenoid valves 24 and 26 are normally open and the solenoid valves 22 and 28 are normally closed.

5 is a panel displaying various operation buttons and operating states of the automatic oil changer according to the present invention, the panel having a start and stop button 50 for starting and stopping the motor pump 46 and an automatic oil. When the exchanger is connected in the reverse direction, the flow path conversion button 52 for changing the flow path, the up button 54 and the down button 56 for setting the amount of oil to be replaced, and the manual operation after the oil change is almost completed. Fine discharge button 58 for discharging the trough finely, fine feeding button 60 for replenishing fine oil manually, setting window 62 for displaying the set oil amount, and supply amount of fresh oil It consists of a new oil supply window 64, and a manger discharge window 66 that displays the discharge of the manger.

Hereinafter, the operational state of the present invention in detail as follows.

First, the oil line conversion unit 20 of the automatic oil changer is connected to the auto mission 10, and then the vehicle is started. At this time, if the automatic oil exchange device and the automatic transmission 10 are connected in the forward direction, as shown in FIG. 1, the oil of the automatic transmission 10 exits the outlet 14 and opens the solenoid valve 22 and the indicator 30. After passing through the solenoid valve 48 and the solenoid valve 28 and entering the oil inlet 12, the oil pressure of the automatic transmission 10 appears on the pressure gauge 49. Since the connection is confirmed, normal oil change can be performed.

At this time, the power switch (not shown) of the oil changer is already on, and a default value of 7 L appears in the setting window 62 in which the amount of oil to be supplied is preset, and the operator selects the up button 54 or the down button ( Press 56) to set the amount of oil to be replaced. In this case, the setting amount can be up or down by 0.5ℓ.

When the start stop button 50 is pressed after setting the oil amount, the solenoid valve 32 is in the normal open state, and the solenoid valve 48 is in the normal closed state, and the oil pressure is reduced by the oil pressure of the automatic transmission 10. Exit the outlet of the automatic transmission 10 is discharged to the trough discharge tank (34).

In this case, the motor pump 46 for supplying the new oil is in a state of not starting. The reason is that when the new oil supply motor pump 46 starts while the trough is discharged, too much new oil is generated inside the automatic mission. This is because too much fresh oil is consumed for complete oil change due to dilution with manger. Therefore, when it is detected that the discharge of the trough 2 L by the flow meter at that time, the motor pump 46 is started to supply fresh oil to minimize the consumption of new oil.

Since the manure of the automatic mission is discharged first after 2 liters, fresh oil is started to be injected. Therefore, the preset manure discharge operation is completed first before the supply of fresh oil is completed. At this time, when the trough of the exchange amount set in the setting window 62 is discharged, the flow meter 36 detects this, and the solenoid valve 32 is normally closed, and the solenoid valve 48 is normally open. In the mission 10, the oil does not go out to the trough discharge tank 34, and fresh oil is continuously supplied until the set amount is reached, and when the fresh oil reaches the set amount, the flow meter 42 detects this and the motor pump 46 Stop). When the work is completed, the buzzer sounds 5 times to inform the worker that the work is completed.

When the buzzer sounds, the operator turns off the vehicle when the number shown in the setting window 62, the new oil supply window 64, and the trough discharge window 66 is correct. It ends.

If the numbers shown in the three windows are different from each other, fine adjustment can be made manually using the fine discharge button 58 and the fine supply button 60. For example, if the oil is excessively injected inside the auto mission, pressing the fine discharge button 58, the over-injected amount is discharged to the trough discharge tank 34, and if the amount of oil injected into the auto-mission is insufficient, pressing the tax feed button New oil can be supplied. However, these two buttons do not operate when the automatic oil changer is performing work, and can only be used for fine adjustment after the work is completed.

Hereinafter, another embodiment of the present invention will be described.

FIG. 6 is another embodiment of the present invention and a circuit diagram having the same function as FIG. 1, FIG. 7 is another embodiment of the present invention, and FIG. 7 is a circuit diagram having the same function as FIG. 2, and FIG. 8 is another embodiment of the present invention. 3 is a circuit diagram having the same function as FIG. 3, and FIG. 9 is a circuit diagram having the same function as FIG. 4 as another embodiment of the present invention.

Another embodiment of the present invention is to use three three-way solenoid valves 72, 74, 76 instead of six six-way solenoid valves, unlike the embodiment described above. Here, the three-way solenoid valve 72 has the same function as the two-way solenoid valves 22 and 26 of the first embodiment, and the three-way solenoid valve 74 firstly has the two-way solenoid valves 24 and 28 of the embodiment. It has the same function as, and the three-way solenoid valve 76 is to serve the same function as the two-way solenoid valve 32, 48 of the first embodiment. As described above, the oil supply line 16 and the discharge line 18 of the oil line converting unit 70 may be configured as one line, and thus, the structure may be further simplified. Since the rest of the structure is the same as the above-described embodiment, a detailed description thereof will be omitted.

In addition, when the flow meter 42 detects that the amount of oil set in advance by setting the amount of oil to be supplied with fresh oil in the fresh oil supply tank 44 is supplied, and the set oil amount is supplied, the motor pump 46 is no longer used. Is not operated, and when the automatic oil changer is to be operated again, the motor pump 46 may be operated only by resetting the amount of oil to be supplied. For example, when an oil company leases an oil changer free of charge to increase its oil sales, the oil lease sets the amount of oil sold to the oil changer. The flowmeter 42 recognizes this and stops the operation of the motor pump. If the oil changer is to be used again, the oil pump must be reset to the exchanger so that the motor pump can be operated so that the gratuitous tenant can freely use oil from other companies.

As described above, embodiments of the present invention have been described in detail, but the scope of the present invention is not limited thereto, and the scope of the present invention extends to the range substantially equivalent to one embodiment of the present invention.

According to the present invention, even if the automatic oil change device and the automatic mission are not properly connected, only the solenoid valve direction of the oil line converter is automatically changed simply so that the oil change device is removed to lift the car or start the car. Since oil can be changed easily without turning off, oil change workability is improved and work convenience can be aimed at.

In addition, according to the present invention, at the initial stage of the oil change operation, the discharge of the trough and the supply of the new oil are not performed at the same time, and the new oil is prevented from being supplied until the trough is discharged to some extent, thereby minimizing unnecessary consumption of the new oil during the oil change. It can work.

In addition, according to the present invention, after the oil change operation is completed, compared to the initial setting amount, when the discharge of the trough and the supply amount of new oil does not coincide with each other, it can be finely adjusted manually so that accurate oil change can be performed. It works.

In addition, according to the present invention, the oil change operation is made automatically, and when the operation is completed, the operation is notified by the buzzer sound, so the operator does not have to waste time and inconvenience of manual operation of the entire replacement operation like a manual oil changer. This can save you time by allowing you to do other work when the exchanger is changing oil with confidence.

Claims (5)

In the device for automatically changing the oil of the auto-mission of the vehicle, the supply line 16 and the discharge line 18 of the automatic oil changer is a double line, respectively, each double line is an oil filling port of the auto-mission 10 ( 12) and one outlet port 14, and two-way solenoid valves 22, 24, 26, and 28 are mounted on their respective double lines so that the flow direction is reversed. And the oil line conversion unit 20 for converting the flow path by changing the direction of the two-way solenoid valve of the discharge line and the supply line when the reverse connection; A solenoid valve 32 connected to the discharge line 18 of the oil line converting unit 20 to block the discharge of oil when the pressure of the first automatic transmission 10 is checked; A trough discharge tank 34 connected to the rear end of the solenoid valve 32; A motor pump 46 connected to the supply line 16 of the oil line converter 20 to supply oil; A fresh oil supply tank 44 connected to a rear end of the motor pump 46; A solenoid valve (48) mounted between the discharge line (18) and the supply line (16) to open at the pressure check of the initial auto-mission (10) and to shut off when oil discharge and supply are started; Auto-mission automatic oil exchange apparatus for a vehicle, characterized in that made in series with the solenoid valve (48) is made of a pressure gauge (49) for checking the oil pressure of the automatic transmission (10). The method of claim 1, When the discharge of the trough is detected to be discharged 2 liters by the flow meter 36, the automatic automatic oil exchange device for a vehicle, characterized in that when the motor pump 46 is started to supply fresh oil. The method according to claim 1 or 2, After the oil change is completed, when the oil is excessively injected into the inside of the automatic transmission 10, when the fine discharge button 58 is pressed, the excessively injected amount is discharged to the trough discharge tank 34, and the oil injected into the automatic transmission If the amount is insufficient, the automatic mission automatic oil exchange device for a vehicle, characterized in that by supplying new oil by pressing the tax supply button. The method according to claim 1 or 2, When the flowmeter 42 detects that the amount of oil set in advance by setting the amount of oil to be supplied with fresh oil in the fresh oil supply tank 44 is set, the motor pump 46 is no longer operated. When the automatic oil change device is to be operated again, the motor pump 46 is operated only by resetting the amount of oil to be supplied. In the device for automatically changing the oil of the auto-mission of the vehicle, the supply line 16 and the discharge line 18 of the automatic oil changer is connected to the oil inlet 12 and the outlet 14 of the auto-mission 10 one by one. And the three-way solenoid valves 72 and 74 are installed in the supply line 16 and the discharge line 18 so that the flow paths are reversed, and the oil is discharged and supplied in the forward connection, and the discharge line and the supply line in the reverse connection. An oil line converting unit 70 converting the flow paths by changing the directions of the three-way solenoid valves of each other; The solenoid is connected to the discharge line 18 and the supply line 16 of the oil line converting unit 70 to block the discharge of oil when the pressure of the first automatic transmission 10 is checked and to open and discharge the oil. A valve 76; A trough discharge tank 34 connected to the rear end of the solenoid valve 76; A motor pump 46 connected to the supply line 16 of the oil line converter 20 to supply oil; A fresh oil supply tank 44 connected to a rear end of the motor pump 46; Auto-mission automatic oil exchange apparatus for a vehicle, characterized in that made of a pressure gauge (49) mounted between the solenoid valve 76 and the supply line (16) to check the oil pressure of the automatic transmission (10).