JP2756059B2 - ATF switching equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for exchanging oil (ATF) in an automatic transmission of a motor vehicle, and more particularly to an ATF exchanging device for exchanging oil by connecting to an oil cooler or a flow path connected to the oil cooler. About.

[0002]

2. Description of the Related Art Generally, an automatic transmission of a motor vehicle has six transmissions.
It contains up to 8 liters of ATF, which is replaced every 30,000 to 40,000 km. Recently,
There has been proposed an exchange device capable of automatically exchanging ATFs. The exchange device includes an oil drain line, a unit for adjusting a flow rate of oil drained from the oil drain line, a unit for detecting an oil drain amount, a supply line provided with a pump, and pressure supply by the supply line. The apparatus includes means for detecting the amount of oil to be supplied and control means, and uses a new oil tank and a waste oil tank. According to such an exchange device, the operator can automatically perform an exchange operation without adjusting the flow rate.

[0003]

However, the exchange device has a disadvantage that the structure of the device is complicated and the operation is troublesome.

[0004] The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an ATF exchange device that can easily exchange ATFs.

[0005]

Means for Solving the Problems The problem is that new oil is full.
The sealable container to be sealed and the easy-to-
A bag that has an inflatable property and expands to store waste oil therein;
One end is connected to the opening of the bag and the other end is the oil of the automatic transmission.
A collection pipe connected to the outlet, and one end at the bottom of the container.
Supply that is open and the other end is connected to the oil inlet of the automatic transmission
The problem is solved by an ATF exchange device comprising a tube.

[0006]

According to the ATF exchange apparatus of the present invention, such an arrangement is used.
For example , disconnect the connection at any point of the flow path connected to the oil cooler of the ATF , connect the supply pipe to the low pressure side, connect the recovery pipe to the high pressure side, and start the oil pump in the automatic transmission. When driven, the waste oil flows into the bag in the container through the collection pipe, and the same amount of new oil as the waste oil flowing into the bag is pushed out to the low pressure side of the circulation passage through the supply pipe.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the ATF switching device of the present invention will be described in detail with reference to embodiments. FIG. 1 is a diagram showing an example of an ATF exchange device according to the present invention. In this figure, reference numeral 1 denotes a container. The container 1 is a hollow cylindrical body that can be hermetically sealed, is filled with ATF, has an openable and closable lid 2 on an upper portion thereof, and is provided with a supply pipe through the lid 2 from outside. 3 and a collection pipe 4 are attached. The supply pipe 3
An opening at one end thereof is located near the bottom in the container 1 and is disposed along the container side surface 5.
Is attached. A cock 7 is attached to the upper part of the recovery pipe 4 in the same manner as the supply pipe 3, and a check valve 8 for preventing a backflow of the waste oil is mounted inside the recovery pipe 4.
A bag 9 for accommodating waste oil is detachably attached to a lower end of the bag. The bag 9 is oil-resistant and easily expandable, with its internal capacity increasing by a slight force, and is preferably made of synthetic rubber, soft vinyl, or the like.

[0008] In order to use such an ATF exchange device, as shown in FIG.
1 with transparent collection hose 12 and supply hose 13
, The supply pipe 3 and the recovery pipe 4 are connected to the flow path D connected to an oil cooler (not shown) of the radiator C. The flow path D leads from the outlet D1 of the automatic transmission A to the inlet C1 of the oil cooler via the hose D2, and from the outlet C2 of the oil cooler to the inlet D4 of the automatic transmission A via the hose D3. The connection is cut off at any point of the flow path D, the recovery hose 12 is connected to the high pressure side, and the supply hose 13 is connected to the low pressure side. In addition, the supply hose 13 is connected to a small-diameter nozzle hose at the tip thereof,
This may be inserted into the filler tube E of the automatic transmission A. Then, the cocks 6 and 7 are opened, the engine B is started, and the oil pump in the automatic transmission A is driven. Thus, the waste oil flows into the bag 9, whereby the bag 9 expands, and the pressure causes the new oil in the container 1 to be pushed out from the supply pipe 3 and moved into the circulation passage D via the recovery hose 13. . And when the waste oil is completely replaced with new oil,
Since the color of the ATF in the collection hose 12 changes from waste oil color to new oil color, when this color change is confirmed, the oil pump in the automatic transmission A is stopped and the connected collection hose 12
Then, the supply hose 13 is removed, the lid 2 is opened, and the bag 9 containing waste oil is removed and discarded.

According to such an ATF exchange device, ATF exchange can be performed by an easy operation, and 100% of waste oil can be recovered. In addition, since the recovery flow rate and the supply flow rate are equally balanced, there is no risk of air entering the ATF of the automatic transmission or causing an overflow, and safe and accurate ATF replacement can be performed. Also,
Such an ATF exchange device has a simple structure,
Since a pump is not required, the setting for the replacement operation can be performed easily and anywhere. In addition, the bag 9 can be used repeatedly by replacing it.

[0010]

As described above , according to the ATF exchange apparatus of the present invention, ATF exchange can be performed by easy operation, and 100% of waste oil can be recovered. In addition, since the recovery flow rate and the supply flow rate during the replacement work are equal, there is no risk of air entering the ATF of the automatic transmission or causing an overflow, thereby enabling safe and accurate ATF replacement. Further, such an ATF exchange device has a simple structure, is inexpensive, and does not require a pump, so that the setting for the exchange operation can be easily performed regardless of the place.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of an ATF exchange device of the present invention.

FIG. 2 is a piping diagram showing a state where the ATF exchange device shown in FIG. 1 is connected.

[Explanation of symbols]

 1 container 3 supply pipe 4 collection pipe 9 bags

Claims (1)

(57) [Claims] 1. A and sealable container fresh oil is filled, this
The container has an easy-to-expand and expands inside the container.
A bag for storing waste oil and one end connected to the opening of the bag
A collection pipe having the other end connected to an oil outlet of the automatic transmission, and an opening at one end at the bottom of the container, and the other end connected to the automatic transmission
ATF exchange apparatus comprising a supply pipe connected to an oil inlet of the ATF.