JPH0138075Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] This invention relates to a refueling device suitable for use when refueling, for example, at a gas station or the like.

[Prior art]

Some recent oil supply devices allow a desired amount of oil to be preset, contributing to smoother oil supply operations. The preset operation in this type of oil supply system is based on a fixed preset value (e.g. 10, 20
, 30, etc.) or input a desired preset value using a numeric keypad. When performing preset refueling, after inputting this preset value, the refueling nozzle is loaded into the fuel tank, and the lever of the refueling nozzle is opened to start actual refueling. After that, if the lever is held in the open position by the lever holding mechanism provided on the refueling nozzle, when the refueling amount reaches the preset value, the refueling nozzle will automatically open even though the refueling nozzle is open. The refueling is automatically shut off, and refueling corresponding to a series of preset values is completed.

[Problem that the invention attempts to solve]

By the way, in conventional oil supply devices, when performing preset oil supply, after pressing the above-mentioned fixed setting switch to set the preset oil supply mode,
Insert the refueling nozzle into the fuel tank and open the nozzle to start refueling.On the other hand, when performing normal refueling, simply insert the refueling nozzle into the fuel tank and open the nozzle to start refueling. was.

However, the preset lubrication mode has a drawback in that the preset lubrication mode cannot be canceled unless the lubrication corresponding to the set preset value is completed and the lubrication nozzle is returned to the nozzle housing.

As a result, after starting preset lubrication according to the amount of lubrication initially instructed by the customer, if the customer requests a change to lubricate the amount of lubrication larger than the amount of lubrication instructed, preset lubrication is started. Once completed, return the refueling nozzle to the nozzle housing, then remove the nozzle from the nozzle housing again.
Thereafter, it was necessary to switch to manual lubrication mode and manually replenish the insufficient amount (instructed lubrication amount after change - instructed lubrication amount before change). The reason for this is that when additional refueling is performed, the refueling amount before the additional refueling is reset, so the refueling amount before the additional refueling becomes unknown, or the refueling amount before the additional refueling and the refueling after the additional refueling. This is because problems such as the total amount becoming unclear may occur.

Alternatively, as mentioned above, if the customer requests a change in refueling that requires a larger amount of refueling than the specified refueling amount, the customer will have no choice but to decline the change request and refuel to the preset value set at the beginning. Situations often occurred. As described above, the conventional oil supply system has the disadvantage that it cannot respond to a request for changing the amount of oil supplied after preset oil supply has started, and that it requires a lot of labor and time for refueling.

[Means for solving problems]

In order to solve the above-mentioned problems, this idea
In a refueling device having a preset refueling mode in which refueling is automatically stopped when the refueling amount reaches a preset value set in advance, there is provided a switch means for instructing cancellation of the preset refueling mode, and when the switch means is operated. A mode switching means is provided for detecting cancellation of the preset lubrication mode and automatically switching to manual lubrication mode.

[Effect]

By operating the switch means, the mode is instantaneously switched to manual refueling mode, so even if the customer requests a change in the amount of refueling after preset refueling has started, the customer can respond immediately.

〔Example〕

Embodiments of this invention will be described below with reference to the drawings.

FIG. 2 is a schematic diagram showing the construction of an embodiment of this invention.

In FIG. 2, 1 is a main body, 2 is a pump, and 3 is a flow meter. Oil is sent from the pump 2 through the flow meter 3 to the vehicle through a refueling nozzle 5 provided at the tip of a refueling hose 4. Refueling tank (not shown) is supplied with oil. 6 is a motor that drives the pump, and 7 is a flow pulse generator attached to the flow meter 3, which outputs a pulse train corresponding to the flow rate. A storage case 8 is provided in the main body 1 and stores the refueling nozzle 5. Inside this storage case 8, a nozzle switch 9 is provided which opens and closes in conjunction with the connection and removal of the refueling nozzle 5, and the motor 6 starts driving when the refueling nozzle 5 is removed and the nozzle switch 9 is turned on. do. 10
is a nozzle lever, and when the operator grips this nozzle lever 10, oil is discharged from the tip of the oil supply nozzle 5. Reference numeral 11 denotes a display device provided on the main body 1, and this display device 11 consists of a refueling amount display section 12 and a preset value display section 13. 14 is a plurality of fixed setting switches PS (hereinafter referred to as preset switches) corresponding to preset values.
Alternatively, there is a preset value setting section consisting of a numeric keypad PS, and 15 is a preset release switch operated when canceling preset oil supply.

FIG. 1 is a block diagram showing the electrical configuration of this embodiment, and parts corresponding to those shown in FIG. 2 are designated by the same reference numerals, and their explanation will be omitted.

In the figure, 20 is a control circuit consisting of a CPU (central processing unit), memory, etc., and is a circuit that controls each part of the apparatus as described later. 21 is a preset value setting section 14 and a preset release switch 1
5 is an interface that supplies the switch signal from 5 to the control circuit 20, and 22 is an interface that supplies the output signal of the nozzle switch 9 and the output pulse of the flow rate pulse generator 7 to the control circuit 20. 24 is a display drive circuit that causes the display 11 to display the refueling amount and preset value based on display data supplied from the control circuit 20;
is a motor drive circuit that controls driving and stopping of the motor 6 based on a motor control signal supplied from the control circuit 20.

Next, the operation of this embodiment with the above-described configuration will be explained with reference to the flowcharts shown in FIGS. 1, 2, and 3.

First, the operator removes the refueling nozzle 5 from the storage case 8.
When you take it out, the nozzle switch 9 turns on,
This switch signal is supplied to the control circuit 20 via the interface 22, and as a result, the control circuit 20 supplies a motor drive signal to the motor drive circuit 25. As a result, although the pump 2 operates, oil is not discharged from the oil supply nozzle 5 until the nozzle lever 10 is opened. Therefore, at this point, the flow rate pulse generator 7 does not output a pulse signal. Next, when the operator opens the nozzle lever 10, refueling starts (step SP in Figure 3).
1) The processing of the control circuit 20 moves to step SP2, where it is determined whether a preset value has been set. In this case, if one of the preset switches PS, PS, etc. is pressed prior to the refueling operation, the determination at step SP2 will be "YES" and the process will proceed to the preset refueling process at step SP3. If not, the determination is "NO" and the process moves to step SP4, manual lubrication processing. The determination in step SP2 is made by the control circuit 20.
This is done by memorizing the switch signal of the preset switch PS that was pressed, and at the time the preset switch PS is pressed,
The corresponding preset value is displayed on the preset value display section of the display 11.

In the manual refueling operation at step SP4, when the operator opens the nozzle lever 10,
Oil is discharged from the oil supply nozzle 10, and the flow rate pulse generator 7 supplies a pulse train corresponding to the flow rate to the control circuit 20 via the interface 22. As a result, the control circuit 20 converts the number of supplied pulses into a flow rate and supplies the calculated flow rate value data to the display drive circuit 24. As a result, the current flow rate is displayed on the flow rate display section 12 of the display 11. Then, the operator closes the nozzle lever 10 when the displayed value on the flow rate display section 12 reaches the customer's specified refueling amount, and returns the refueling nozzle 5 to the storage case 8. As a result, the nozzle switch 9 is turned off, the control circuit 20 detects this, and supplies a motor stop signal to the motor drive circuit 25. As a result, the motor 6 stops, and the series of manual oiling processes ends.

On the other hand, in the preset oil supply operation at step SP3, the operator fixes the nozzle lever 10 in the open position (the lever lock mechanism in this case is not shown) and continues to discharge oil. In this case, the control circuit 20 calculates the flow rate from the pulse train of the flow rate pulse transmitter 7 supplied via the interface 22 and displays it on the flow rate display 12,
Determine whether the current flow rate value has reached the preset value. Further, the control circuit 20 moves to step SP5 at a predetermined timing and determines whether the preset value release switch 15 has been pressed. If the determination at step SP5 is "NO", the process returns to step SP3. From then on,
As long as the judgment in step SP5 remains “NO”,
The processing of the control circuit 20 circulates through loop ₁ and proceeds with the preset oiling processing described above. and,
When the current oil supply amount reaches the preset value, the control circuit 20 sends a motor stop signal to the motor drive circuit 25.
supply to As a result, the motor 6 stops and the series of preset oiling operations ends.

On the other hand, if the determination at step SP5 becomes "YES" before the oil supply amount reaches the preset value,
The control circuit 20 clears the display on the preset value display section 13 and continues to the manual oiling process at step SP4. As a result, from now on, when the operator closes the nozzle lever 10, refueling ends. Therefore, the operator only needs to refuel while looking at the value displayed on the flow rate display section 12 and finish refueling when the desired flow rate is reached, so that, for example, when a customer changes the amount of refueling, the operator can refuel quickly. can correspond to

In this embodiment, a preset cancel switch 15 for canceling a preset is provided, but instead of this, for example, a preset cancel switch 15 can be used.
Preset lubrication may be canceled when PS is pressed again.

[Effect of idea]

As explained above, according to this invention, in a refueling device having a preset refueling mode in which refueling is automatically stopped when the refueling amount reaches a preset value set in advance, an instruction to cancel the preset refueling mode is provided. The system is equipped with a switch means and a mode change means that detects the cancellation of the preset lubrication mode when the switch means is operated and automatically switches to the manual lubrication mode, so that after the start of preset lubrication, the customer can Even if, after starting preset lubrication according to the amount of lubrication, the customer requests a change to lubricate with a larger lubrication amount than the lubrication amount instructed by the customer, the preset lubrication is once completed and then the system switches to manual lubrication mode to compensate for the shortage. The desired amount of oil can be quickly supplied without additional oil supply.

[Brief explanation of the drawing]

Figure 1 is a block diagram showing the electrical configuration of an embodiment of this invention, Figure 2 is a schematic diagram showing the mechanical configuration of the embodiment, and Figure 3 is a flowchart showing the operation of the embodiment. be. 15... Preset release switch (switch means), 20... Control circuit (mode switching means).

Claims (1)

[Scope of utility model registration request] In a refueling device having a preset refueling mode in which refueling is automatically stopped when the refueling amount reaches a preset value set in advance, there is provided a switch means for instructing cancellation of the preset refueling mode, and when the switch means is operated. 1. A refueling device comprising mode switching means for detecting cancellation of preset refueling mode and automatically switching to manual refueling mode.