JPH0520719Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Application of the Invention] This invention relates to an oil exchange device for exchanging engine oil, torque converter oil, etc. of an automobile.

[Prior art and its problems] Generally, this type of device is equipped with a waste oil tank and a new oil tank inside the device body, and all the old oil that has been taken out is stored in the waste oil tank, and the new oil that is filled is always filled. It was supplied from the new oil tank.

For this reason, when the waste oil tank becomes full, it becomes unusable and there are cases where the waste oil is forced to be drained in front of customers in a hurry.Furthermore, various oils are used to fill the tank, depending on the customer's preference. There was an inconvenience that it was not possible to respond freely when filling.

[Means for solving the problem] This invention includes a nozzle for both extraction and filling, a waste oil tank, a new oil tank, a means for extracting old oil into the waste oil tank through the nozzle, and a means for removing old oil from the new oil tank. In an oil exchange device for exchanging engine oil, torque converter oil, etc. of an automobile, the device body is provided with a means for filling the stored new oil from the nozzle, and a waste oil pipe line that communicates the extracting means and the waste oil tank; A new oil pipe that communicates between the new oil tank and the filling means, a service pipe that is connected at one end to the waste oil pipe and the new oil pipe, and whose other end is led out of the device main body and can communicate with an external tank; A pipe that is equipped with a pipe switching means that is operated to open any one of the pipe, new oil pipe, and service pipe, and is capable of drawing old oil into an external tank and filling new oil from the external tank. This is an attempt to solve the above problems.

[Function] With this, in addition to the work of draining old oil from the nozzle to the waste oil tank and filling the new oil tank with new oil from the nozzle, the old oil is transferred to the external tank outside the main body of the device via the service pipe. This makes it possible to drain the oil into the external tank and fill it with new oil from the external tank via the service line.

[Example] Examples thereof will be described below based on the drawings.

FIG. 1 is an external view of an embodiment of the present invention, FIG. 2 is an explanatory diagram of the configuration of the embodiment, and FIG. 3 is an enlarged view of the control panel section of the embodiment.

Reference numeral 1 denotes an oil exchange device main body, which has a hose 2 extending outward and a nozzle 3 provided at its tip. The nozzle 3 is made of a tube material with a thickness that can be inserted into an oil gauge hole of an automobile engine crankcase, a torque converter, etc., and oil is extracted and filled from the oil gauge hole through this nozzle 3. 4 is a holder that accommodates this nozzle 3.

5 is a waste oil tank to store the old oil that has been extracted, 6 and 7 are new oils to be filled, respectively.
Both are housed at the bottom of the main body 1. Separate oils can be stored in the new oil tanks 6 and 7, and the frequently used oil can be selected and stored in advance.

Reference numeral 8 denotes a service conduit extending from the main body 1, which is made of a flexible hose material, and is inserted into an external tank O other than the tanks 5, 6, and 7 as necessary, and is connected to the tank O. It is possible to carry out work such as removing waste oil from tank O or filling new oil from tank O. Reference numeral 9 denotes a slide table provided at the bottom of the main body 1. When using the service conduit 8, the table 9 is pulled out, an external tank O is placed thereon, and the service conduit 8 is inserted and set into the tank O. Reference numeral 10 denotes a holder into which the tip of the service conduit 8 is inserted and held when the service conduit 8 is not in use, and also functions as a handle for pulling out the slide table 9.

Inside the upper part of the main body 1, there are a pump 11, an oil detection device 12, a flow meter 13, and solenoid valves 14, 1.
5, 16, and 17 are provided.

The pump 11 is a positive displacement pump that is driven by an electric motor 18 that can rotate in forward and reverse directions, and is capable of both suction and discharge operations, and communicates with the hose 2 via a conduit 19. The oil detection device 12 is provided in a conduit 20 leading from the pump 11 to the flow meter 13, and includes a chamber 21 that communicates with the conduit 20, and a float 22 that moves up and down within the chamber 21.
It consists of a reed switch 23 that is opened and closed by a magnet embedded in the float 22, and when oil flows into the chamber 21, the float 2
2 rises and switches the reed switch 23 to determine whether the fluid flowing through the pipe line 20 is oil or air. The flow meter 13 is
It measures the flow rate of oil sucked in or discharged by the pump 11, and provides a pulse output for each unit flow rate.

The solenoid valve 14 is provided in a extraction pipe 24 leading from the pump 11 to the waste oil tank 5 via the flow meter 13, and is opened when oil is extracted from the automobile. The solenoid valves 15 and 16 are provided in filling pipes 25 and 26 that lead from the pump 11 to the new oil tanks 6 and 7, respectively, via the flow meter 13, and are set in filling pipes 25 and 26 that lead from the pump 11 through the flow meter 13 to the new oil tanks 6 and 7, respectively. The valve is selectively opened. The solenoid valve 17 is provided in a conduit 27 constituting a service conduit in the device body 1, and is opened when draining oil to an external tank or conversely filling oil from the external tank. .

Reference numeral 28 denotes an oil check device installed in the pipe line 17, which is used to visually check the degree of contamination of the oil flowing through the pipe line 17, and is exposed at one corner of the control panel 30 formed on the front surface of the main body 1. It is provided.

In addition to the oil check device 28, the control panel 30 includes an indicator 31 and a preset key 3.
2. An operation key 33, a mode switching key 34, and an oil selection key 35 are provided (see FIG. 3).

The display 31 displays the oil flow rate based on the pulse signal from the flow meter 13 and the preset key 32.
Displays the preset input value. The preset key 32 is used to preset the amount of oil to be extracted or filled, and the "" key 32-1 inputs 0 to 20 every other time, and 0 to 0.9 is input by 0.1.
It consists of a "cc" key 32-2 for inputting data every other time, and a "clear" key 32-3 for returning a preset value to zero.

The operation key 33 is used to execute/stop operations such as oil extraction and filling that can be performed with this device.
3-1. "Draining" which only removes oil
It consists of a key 33-2 and a "fill" key 33-3 which only performs oil filling. This operation key 33 has a lamp 36 for each key 33-1 to 33-3.
-1 to 3 are attached, each operation key 33-1
A light is displayed to indicate that the work given in ~3 is being executed.

The mode switching key 34 determines whether the operation such as extraction or filling given by the operation key 33 is to be performed using the aforementioned tanks 5, 6, and 7 provided in the main body 1, or whether the operation is performed using an external tank via the service conduit 8. This is to set whether it is performed using
It consists of a "normal" key 34-1 for specifying work using the tanks 5, 6, and 7 provided in the main body 1, and an "external" key 34-2 for specifying work using an external tank. . 37-1,2
are lamps attached to each of the mode switching keys 34, which illuminate to indicate the mode designated by the key.

The oil selection key 35 is used to select which of the fresh oil tanks 6 and 7 to fill with the stored oil when filling the oil.
Specify the oil in tank 6 with ``'' key 35-2, and specify the oil in tank 7 with ``'' key 35-2. Reference numerals 38-1 and 2 indicate lamps that illuminate to indicate the oil selected by the selection key 35.

Reference numeral 40 denotes a control unit that operates the pump 11, electromagnetic valves 14 to 17, etc. according to programs in response to signals from the control panel 30, the oil detection device 12, and the flowmeter 13. 41 is a drive circuit for the pump 11, which drives/stops the pump 10 and switches between suction and discharge. 42 to 45 are drive circuits that open and close the electromagnetic valves 14 to 17, respectively; 46 is a display 31 of the control panel 30;
This is the drive circuit. A microcomputer 47 includes a CPU 48, ROM 49, and RAM 50, and is connected to various parts via an input/output circuit 51.

4 and 5 are flowcharts showing operation programs in the control section 40, with FIG. 4 showing the program for the extraction operation and FIG. 5 showing the program for the filling operation, respectively. The operation of the embodiment will be explained below based on this figure.

Extracting operation (FIG. 4): After inserting and setting the nozzle 3 into the nozzle gauge hole of the part to be worked on, when the "extracting" key 33-2 is pressed on the control panel, the extracting operation is started. First, clear the contents of the counter C that counts the pulse signal from the flowmeter 13 and gives the flow rate.
(1). Next, check the mode set using the mode switch key 34 (2), and if it is the "normal" mode, open the solenoid valve 14 (3), and if it is the "external" mode, open the solenoid valve 17. Close the valve (4) and operate the pump 11 in suction mode (5). When the oil detection device 12 detects the inflow of oil as the pump 11 operates (6), the counter C starts counting flow rate pulses (7), and the value of the counter C is displayed on the display 31 ( 8).

The oil is removed in this way, and when the oil detection device 12 detects that air has flowed into the pipe (9), it is determined that the oil removal has been completed.
Stop counting of counter C (10) and wait for a certain period of time T
After waiting for 5 to 10 seconds and completely draining the oil remaining in the pipe into the waste oil tank 5 (11), stop the pump 11 and close the solenoid valve that was open (12). ) Finish the work.

Filling operation (FIG. 5): After setting the nozzle 3 into the gauge hole, pressing the "fill" key 33-3 on the control panel 30 starts the filling operation. First, clear the contents of counter C (1), and then press preset key 32.
The preset amount inputted by and displayed on the display 31 is read into the memory P (2). At this time, if the preset amount is "0", a constant value corresponding to the capacity of the new oil tanks 6 and 7 is given to the memory P.
Further, if the filling operation is started without using the preset key 32 after the oil extraction operation, the oil extraction amount displayed on the display 31 is set in the memory P. Next, check the mode set in the mode switching key 34 (3), and if it is the "normal" mode, further check the oil specified in the oil selection key 35 (4), and if it is "", then the electromagnetic The valve 5 is opened (5), and the solenoid valve 6 is opened (6).
On the other hand, if it is determined in step (3) that the "external" mode is set, the solenoid valve 17 is opened (7). After this, the pump 11 is operated for discharge (8) to start filling.

As the pump 11 operates, the oil detection device 12
When an outflow of oil is detected (9), the counter C starts counting flow rate pulses (10), and the value of this counter C is displayed on the display 31 (11). Filling progresses in this way, and the filling amount, that is, the counter amount C
reaches the preset amount given in memory P (1
2) When the "fill" key 33-3 is pressed again and a stop input is input (13), the counter C stops counting, the pump 11 is stopped, and the solenoid valve that is open is closed ( 14) Finish the work.

In this embodiment, oil can be replaced by extracting and filling as described above. Furthermore, when the "auto" key 33-1 is pressed on the control panel 30, the above-mentioned sampling operation is followed by the above-mentioned filling operation, and the amount of oil drained at this time becomes the preset value. , an amount of oil equal to the amount removed is filled. Further, this automatic operation cannot be executed when the mode switching key 34 is set to the "external" mode.

Therefore, in this embodiment, the control panel 3
In addition to drawing and filling using the tanks 5 to 7 provided inside the main body, similar operations can be performed using an external tank by simply inputting a key at 0.

[Effects of the invention] As is clear from the above explanation, according to this invention, in addition to the normal extraction work to the waste oil tank, it is possible to perform the extraction work to an external tank via the service pipe. Even when the tank is full, the old oil can be drained to the external tank using the service pipe, eliminating the need to replace the waste oil tank or dispose of the waste oil in front of customers in a hurry. You can proceed with your work quickly.

In addition to the normal filling operation from the new oil tank, it is also possible to fill any type of oil from an external tank via the service pipe, so it is possible to fill the tank with any type of oil that is different from the oil in the new oil tank installed in the main unit. If a request is made to fill the tank, the service line can be used to immediately respond to this request.

[Brief explanation of the drawing]

FIG. 1 is an external view of one embodiment of the present invention. FIG. 2 is an explanatory diagram of the configuration of the same embodiment. FIG. 3 is an enlarged view of the main parts of the same embodiment. 4 and 5 are flowcharts showing the operation program of the same embodiment. 1 is an oil exchange device body, 3 is a nozzle, 5 is a waste oil tank, 6 and 7 are new oil tanks, 8 is a service pipe, 11 is a pump serving as an extraction means and a filling means,
14 to 17 are electromagnetic valves as pipe switching means; 24 is a withdrawal pipe; 25 and 26 are filling pipes; 30 is a control panel; 40 is a control section; O is an external tank.

Claims (1)

[Scope of claim for utility model registration] (1) A nozzle for both extraction and filling, a waste oil tank,
The main body of the device is equipped with a new oil tank, a means for draining old oil into the waste oil tank through the nozzle, and a means for filling the new oil stored in the new oil tank through the nozzle. In an oil exchange device for exchanging oil, a waste oil pipe line that communicates between the extraction means and the waste oil tank, a new oil pipe line that communicates the new oil tank and the filling means, and one end connected to the waste oil pipe line and the new oil pipe line. a service pipe whose other end is led out of the apparatus main body and can communicate with an external tank; and a pipe switching means that is operated to open any one of the waste oil pipe, the new oil pipe, and the service pipe. An oil change device characterized in that it is capable of draining old oil into an external tank and filling new oil from the external tank. (2) The oil change device according to claim (1) for registration as a utility model, characterized in that a pump for both extraction and filling functions serves as both the extraction means and the filling means.