JPH0118558Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Field of Application) The present invention relates to an improvement of a suspended oil supply device that supplies oil in accordance with a preset value when refueling.

(Prior Art) Conventionally, in this type of suspended refueling device, the preset value is set by operating a preset setting switch that is provided on the refueling nozzle or the refueling hose near the refueling nozzle together with a lift switch. The preset setting switch is connected to a setting circuit provided in a non-explosion-proof area via a signal line provided along the inside of a refueling hose.

By the way, in the case of a suspended refueling device, in order to improve the operability of the refueling nozzle and the refueling hose, it is preferable that the number of preset setting switches provided together with the lift switch is small.

Therefore, as described in Japanese Patent Application Laid-open No. 58-73596, a conventional suspension type oil supply device of this type is configured with a single preset setting switch, and when the preset setting switch is pressed, The preset values set at predetermined intervals (for example, 5) are sequentially changed and displayed by the output signal, and by releasing the push button when the desired preset value is displayed, the displayed value is set as the preset value. There is something like this.

(Problem to be solved by the invention) However, if the number of switches in the preset setting switch is simply reduced as in the technique described above, the preset values that are sequentially changed and displayed by the output signal when the preset setting switch is pressed Since the number of preset values is naturally limited, the selection range of preset values is reduced and there is a problem in that detailed preset values cannot be set according to the customer's wishes.

Also, in order to solve this problem, it is possible to increase the number of preset values that are changed and displayed sequentially.
When trying to set a preset value that is later in the order of change and display, it takes time to set it, and the speed of change display must also be increased, making it difficult to operate the preset setting switch. It was hot.

(Means for Solving the Problems) In order to solve the above problems, the suspended refueling device of the present invention suspends a refueling hose having a refueling nozzle at the tip from a hose lifting mechanism installed at a high place at a refueling station. The base end side of the refueling hose is connected to the outflow side of a flow meter provided with a flow rate transmitter, and the refueling nozzle or the refueling hose near the refueling nozzle includes:
In a suspended type refueling device, which is provided with one or more operation switches for operating the hose lifting mechanism and performs refueling corresponding to a preset value set at the time of refueling, the instruction switch for instructing the start of the preset value setting work is operated as described above. A preset is provided with the switch, and is supplied with operation signals of the instruction switch and the operation switch, as well as a flow rate signal output from the flow rate transmitter, and sets a desired preset value consisting of a plurality of digit values for each digit value. A value setting control means is provided, and the preset value setting control means sets a preset value setting permission state by prohibiting the operation of the hose lifting mechanism by the operation signal of the operation switch upon input of the operation signal of the instruction switch; a preset value setting permission means for canceling the setting of the preset value setting permission state by inputting a flow rate signal from the flow rate transmitter; and when the preset value setting permission means is in the preset value setting permission state, the operation switch and the instruction Preset value setting means reads each operation signal from a plurality of the switches as a data signal for setting each digit value of the preset value, and sets the preset value for each digit value based on the reading. Become.

(Function) According to the present invention, by operating the instruction switch provided together with the operation switch, the operation switch that operates the hose lifting mechanism can be used as a switch for setting data of preset values, and the desired data consisting of a plurality of digit values can be set. Preset values can also be easily set using separate switches for each digit value.

(Example) Hereinafter, an example of the present invention will be described with reference to the drawings.

FIG. 1 shows the overall configuration of the suspended oil supply system of this embodiment. In the figure, 1 is an oil storage tank, 2 is a pipe, 3 is a pump, 4 is a motor that drives the pump 3, and 5 is a flow rate. The pipe 2 is connected to a refueling hose 10 having a refueling nozzle 9 at its tip via a hose lifting mechanism 8 provided at a high point 7 of the refueling station. has been done.

Reference numeral 11 denotes a switch box provided on the refueling hose 10 near the refueling nozzle 9, and the switch box 11 includes a lift switch 1 as an operation switch for operating the hose lifting mechanism 8 as shown in FIG.
2. Lowering switch 13 with operating string 13a attached
and an instruction switch 14 for instructing the start of the preset value setting work, and these switches 12 to 14 are each connected to a control device 16 via a signal line 15 installed inside the refueling hose 10. .

17 is an indicator, the indicator 17 is the oil supply amount indicator 1
7a, refueling amount display 17b, refueling unit price display 1
7c, and a preset display 17d.

Next, the control structure of the suspended oil supply system of this embodiment will be explained with reference to FIGS. 3 and 4.

In FIG. 3, reference numeral 18 denotes a refueling amount and refueling price calculation means, and the calculating means 18 receives the flow rate pulse FP from the flow rate transmitter 6 and calculates the refueling amount, and also sets the amount by a unit price setting device (not shown). The refueling amount is calculated based on the unit price and displayed on the refueling amount display 17a, refueling amount display 17b, and refueling unit price display 17c, respectively.

19 is a hose lifting/lowering control means, and lift switch 1
Based on the operation signals Y, Y' of 2 and the operation signals Z, Z' of the lowering switch 13, the hose lifting mechanism 8 is driven and controlled to move the refueling nozzle 9 between the standby position A and the refueling position B shown in FIG. to move it.

Reference numeral 20 denotes a preset oil supply control means which controls the motor so as to supply oil corresponding to a preset value based on preset data PD input from a preset value setting control means 21 to be described later and oil supply amount data input from the arithmetic means 18. 4 is driven and controlled. 21 is a preset value setting control means, which includes an up switch 12, a down switch 13, and an instruction switch 1.
4 operation signals X, Y, Z and flow rate pulse FP are input, and when the instruction switch 14 is operated and the operation signal X is input before the start of refueling, the preset value is set based on the operation signals Y, Z, and X. conduct,
The preset oil supply control means 20 respectively sets the preset data PD and the preset display data PDD.
and is output to the preset display 17d. Further, the preset value setting control means 21 operates such that if the lowering switch 13 is operated before the instruction switch 14 is operated before refueling starts, the ascending switch 12 is operated before the instruction switch 14 is operated after refueling is finished. In such a case, the raising switch 12,
The operating signals Y and Z of the lowering switch 13 are output to the hose elevation control means 19.

FIG. 4 shows the details of the preset value setting control means 21, in which 30, 31, and 32 are chattering prevention circuits, and 33, 34 are quasi-stable times τ ₁ and τ ₂ as appropriate.
A monostable multivibrator circuit (hereinafter,
The MM circuit 34 has a retriggerable configuration. 35 and 36 are MM circuits for trigger pulse generation, 37 to 40 are NOT circuits, 4
1 to 46 are AND circuits, 47 and 48 are OR circuits, 4
Reference numeral 9 indicates a D-type flip-flop circuit (hereinafter referred to as an FF circuit).

Then, the clock input CK of the FF circuit 49 is
By continuing to press the instruction switch 14 for a predetermined period of time τ ₁ or more and outputting the operation signal The input result is the operation signal X
is inputted via an AND circuit 41. When the operation signal X based on this gate pulse is input to the clock input CK of the FF circuit 49,
The output Q of the FF circuit 49 is set and the output Q is reset. As a result, the AND gate means is used to supply the subsequent operation signals Y, Z of the up switch 12 and down switch 13 to the setting display circuit 50, which will be described later, as operation signals Y'', Z'' for preset value setting. In circuits 42, 43, 44
The output Q of the FF circuit 49 is supplied as a gate open signal, and the output of the FF circuit 49 is supplied as a gate close signal to the AND circuits 45 and 46 as gate means. The operation signals Y and Z of the lowering switch 13 are no longer supplied to the hose elevation control means 19 as the ascending signal Y' and the descending signal Z'.

Furthermore, the NOT circuit 39 and the MM circuit 34 are
By detecting that the flow rate pulse FP is output from the flow rate transmitter 6 within a predetermined time interval τ ₂ , it is detected that the refueling nozzle 9 is opened at the refueling position B and refueling is being performed. The detection output is sent to the OR circuit 4 along with the rising signal Y' supplied via the NOT circuit 40.
7 to the reset input R of the FF circuit 49. Reset input R of FF circuit 49
The detection output of the refueling detection means mentioned above or
When the rising signal Y' is input through the NOT circuit 40, the output Q of the FF circuit 49 is reset, and the gate close signal is supplied to the AND circuits 42, 43, and 44 as gate means. , operation signal Y of the up switch 12 and down switch 13,
Z is the operation signal Y'' for preset value setting,
Z'' is no longer supplied to the setting display circuit 50, which will be described later.At the same time, the output of the FF circuit 49 is set, so it is no longer supplied to the setting display circuit 50, which will be described later.
A gate opening signal is supplied to the AND circuits 45 and 46, and the operation signals Y and Z of the rise switch 12 and the fall switch 13 are supplied to the hose elevation control means 19 as a rise signal Y' and a fall signal Z'. .

That is, in this embodiment, the AND circuits 42 to
46 and the FF circuit 49 constitute a preset value setting permission means, and this preset value setting permission means sets the operation signals Y and Z of the up switch 12 and the down switch 13 to preset values by inputting the operation signal X of the instruction switch 14. Operation signal for
The preset value setting permission state is set so that they are treated as Y'' and Z'', and the operation signals Y and Z of the up switch 12 and down switch 13 are set to raise and lower the hose by inputting the flow rate signal from the flow rate transmitter 6. The preset value setting permission state is canceled so that they can be treated as operation signals Y' and Z' for

Reference numeral 50 denotes a setting display circuit, which has a counter function and the like, and receives operation signals X, Y, and Z for the instruction switch 14, the up switch 12, and the down switch 13, which are input via the AND circuits 42 to 44 of the gate means described above.
is the operation signal for setting the preset value for each 100th digit, 10th digit, and 1st digit of the preset value.
X″, Y″, Z″ are input into count inputs C ₁₀₀ , C ₁₀ , C ₁ corresponding to the respective digits, and AND
The outputs of circuit 41 and NOT circuit 40 are OR circuit 4
8 to the reset input R, the FF circuit 49
The output Q of is input to its blanking input BI. This setting display circuit 50 constitutes a preset value setting means, and the preset value set by the setting display circuit 50 is the preset display data.
Preset display 17d and preset oil supply control means 2 as PDD and preset data PD
0.

The present embodiment is configured as described above, and the operation of the present embodiment will be explained next.

First, the operator operates the lowering switch 13 by pulling the operation string 13a to lower the refueling nozzle 9 from the standby position A to the refueling position B during refueling. By the way, at this time, the output Q of the FF circuit 49,
Q is "0" and "1" based on the switch operation of the lift switch 12 at the end of the previous refueling, therefore, AND circuits 42 to 44 are closed, and AND circuit 4 is closed.
5 and 46 are in the open state, the operating signal Z of the lowering switch 13 is supplied only to the lifting control means 19 via the AND circuit 46 as a hose lifting signal Z', and the lifting mechanism 8 is driven downward. The refueling nozzle 9 descends from the standby position A to the refueling position B.
The setting display circuit 50 also resets the preset value set last time when the previous refueling was completed and is set to full refueling, so the preset refueling control means 20 is supplied with full tank data as preset data PD, and the preset display is The full tank display data PDD is supplied to the preset display data PDD to the preset display 17d.
7d displays "000".

When performing preset lubrication, the operator first holds down the instruction switch 14 for a predetermined period of time τ ₁ or more.
As a result, the trigger pulse is output from the MM circuit 35 at τ ₁ hour after the instruction switch 14 is pressed.
It is output as a gate pulse to the circuit 41 and the FF
The clock input CK of the circuit 49 has an instruction switch 1.
4 operation signal X is supplied, the output Q becomes "1" and "0", and the preset value setting is permitted. Therefore, AND circuits 42 to 44
is open, AND circuits 45 and 46 are closed, and the preset value can be set for each digit by operating the instruction switch 14, up switch 12, and down switch 13. This means that the setting display circuit 50 to which the output Q of the FF circuit 49 is supplied
The blanking input BI becomes "1", and the display "000" on the preset display 17d flashes, so the operator can easily confirm this.

Here, the operator can, for example, set a preset value.
To set 123 liters, press down switch 1.
3 three times, the up switch 12 twice, and the instruction switch 14 once. This results in
Setting display circuit 50 via AND circuits 42 to 44
Three, two, and one setting pulses are input to count inputs C ₁ , C ₁₀ , and C ₁₀₀ , respectively. Therefore, the setting display circuit 50 counts the rise of the setting pulse and sets 123 liters as a preset value.
The preset value "123" is displayed blinking on the preset display 17d.

Note that the actual refueling based on the preset value set before the start of refueling is stopped, and the refueling nozzle 9 is moved from the refueling position B to the standby position A by operating the lift switch 12.
In order to increase the fuel level to a maximum of 100 liters, or to stop the preset fueling based on the preset value once set before the start of fueling and perform full fueling, the indicator switch 14 may be held down again for a predetermined period of time τ ₁ or more. As a result, the operation signal X is supplied to the clock input CK of the FF circuit 49 via the AND circuit 41, and its output Q becomes "0" and "1" again, so the AND circuits 42-44 are closed. AND circuit 45,
46 is in the open state, and the setting display circuit 50
Since the operation signal X is similarly supplied to the reset input R of , the preset value that has been set is reset and the full refueling setting is made again. This state can be confirmed by the fact that "000" is displayed again on the preset display 17d and its blinking stops.

Next, the operator operates the refueling nozzle 9 to actually start refueling. At this time, the flow rate pulse FP output from the flow rate transmitter 6 causes NOT circuit 39, MM
A reset signal is input to the reset input R of the FF circuit 49 via the circuit 34 and the OR circuit 47, and the FF
The output Q of the circuit 49 becomes "0" and "1",
AND circuits 42 to 44 are closed, AND circuits 45 and 46
becomes open and the preset setting permission state is released.

Therefore, when refueling actually starts, the flashing of the preset indicator 17d stops, and when the refueling corresponding to the preset value is completed, the operator operates the refueling nozzle 9 to remove it from the refueling port, and turns on the lift switch. Press button 12. At this time, as mentioned above
AND circuits 42 to 44 are closed, AND circuits 45 and 46
Since it is open, the hose raising signal Y' is supplied to the lift control means 19 via the AND circuit 45, and the refueling nozzle 9 is raised from the refueling position B to the standby position A. Then, when the operator releases the button from the lift switch 12 due to the above operation,
Since a reset signal is input from the NOT circuit 40 to the reset input R of the setting display circuit 50 via the OR circuit 48, the preset value set this time in the setting display circuit 50 is reset and filled in preparation for the next refueling. The button settings are made.

The present embodiment is configured as described above, and in this embodiment, the preset value setting control means 21 includes the refueling amount refueling amount calculation means 18 and the hose elevation control means 1.
9. It may be configured as a microcomputer-applied device using a microcomputer together with the preset oil supply control means 20.

Further, in this embodiment, by continuing to press the instruction switch 14 for a predetermined time _τ1 , the raising switch 12 is activated.
Although the down switch 13 is configured to be used as a preset setting switch, the operation mode of the instruction switch is not limited to the above embodiment.
Furthermore, when operating the up switch 12 and down switch 13 as preset setting switches, the manner of operation is not limited to the above embodiment.

(Effects of the invention) As described in detail above, the present invention allows the operation switch to be used as a preset setting switch by operating the instruction switch provided together with the operation switch that operates the hose elevating mechanism. be effective.

In addition to reducing the number of switches and signal lines dedicated to setting preset values, the desired preset value can be set by operating multiple switches for each digit value without reducing the selection range of preset values. Easy and quick to set up.

Furthermore, when the actual refueling starts, the flow rate signal output from the flow transmitter causes the operation switch, which had been functioning as a preset setting switch, to automatically function again as a switch to operate the hose lifting mechanism. Therefore, when returning the refueling nozzle from the refueling position to the standby position by operating the hose elevating mechanism after refueling, the operator must first return the operation switch from the preset setting switch to the switch that operates the hose elevating mechanism. The refueling nozzle can be returned quickly and easily after the refueling is completed.

[Brief explanation of the drawing]

FIG. 1 is an overall configuration diagram of a suspension type oil supply system according to an embodiment of the present invention, FIG. 2 is a configuration diagram of the switch box shown in FIG. 1, and FIG. 3 is a control configuration diagram of the suspension type oil supply system. FIG. 4 shows a detailed configuration diagram of the preset value setting control means shown in FIG. 3, respectively. 12... Raise switch (operation switch), 13
. . . descending switch (operation switch), 14 . . . instruction switch, 21 . . . preset value setting control means.

Claims (1)

[Scope of claim for utility model registration] From the hose lifting mechanism installed at a high place at the gas station,
A refueling hose having a refueling nozzle at its tip is hung, and the proximal end side of the refueling hose is connected to the outflow side of a flow meter equipped with a flow rate transmitter, and the refueling hose at or near the refueling nozzle is connected to the refueling hose. , in a suspended refueling device that is provided with one or more operation switches that actuate the hose lifting mechanism and performs refueling corresponding to a preset value set at the time of refueling, an instruction switch that instructs the start of the preset value setting operation; Provided together with an operation switch, each operation signal of the instruction switch and the operation switch and the flow rate signal output from the flow rate transmitter are supplied, and a desired preset value consisting of a plurality of digit values is set for each digit value. A preset value setting control means is provided, and the preset value setting control means sets a preset value setting permission state by prohibiting the operation of the hose lifting mechanism by the operation signal of the operation switch upon input of the operation signal of the instruction switch. , a preset value setting permission means for canceling the setting of the preset value setting permission state by inputting a flow rate signal from the flow rate transmitter; and when the preset value setting permission means is in the preset value setting permission state, the operation switch and Preset value setting means reads each operation signal from a plurality of the instruction switches as a data signal for setting each digit value of the preset value, and sets the preset value for each digit value based on the reading. A suspended type oil supply device that is characterized by a