JP3032838B2 - Refueling device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a refueling device installed at a refueling station for refueling automobiles or the like with fuel such as gasoline.

[0002]

2. Description of the Related Art As shown in FIG. 2, such a refueling device is connected to an underground oil storage tank (not shown) in a housing 1 installed on the ground, for example, in a fixed-type refueling device. The oil supply pipe 2 is started up, and an oil supply pump 4 connected to an oil supply motor 3 and a flow meter 6 connected to a flow rate pulse transmitter 5 are provided in the middle of the oil supply pipe 2, and an oil supply hose 8 having an oil supply nozzle 7 at the tip is provided. It is connected to the oil supply pipe 2. An indicator 9 for displaying the amount of refueling is provided on the front surface of the housing 1, and a control device 10 using a microcomputer or the like is provided in the housing 1. The flow rate of oil pumped by the pump 4 is measured by the flow meter 6,
The flow rate pulse transmitter 5 outputs a pulse signal as a pulse signal to the control device 10, where it is counted and the refueling amount is displayed on the display 9.

By the way, the capacity of a tank for a general passenger car or a large truck receiving fuel at a gas station is usually several hundred liters or less, and the display of the indicator 9 is returned to zero every time one vehicle is refueled. The number of display digits on the display unit of the display unit 9 is, for example, three digits above the decimal point up to the hundredth digit and two digits below the decimal point.

[0004]

As described above, there is a case where a fueling device having a display having a number of display digits up to the hundreds digit is used to refuel a tank mounted on, for example, a kerosene lorry. The kerosene lorry tank has a large capacity of 1 to 5 kiloliters, so if you fill up the empty tank, the number of display digits will be able to display the amount of refueling at one time on a display with hundreds of digits. Absent. In this case, when the indicator is up to 999.99 liters for the mechanical type, it returns to 0 liter again when the display shows up to 999.99 liters. Indication cannot be made and refueling becomes impossible and the refueling motor stops automatically.At this time, the refueling nozzle is returned to the nozzle hook once,
The display of 999.99 displayed on the display unit is returned to zero, and thereafter, the refueling nozzle is again removed from the nozzle hook and refueling is restarted.

For this reason, to know the amount of refueling, it is necessary to separately add 1000 to the value displayed on the display at the end of refueling, and it is possible to know the amount of refueling at a glance just by looking at the value on the display. I can't do it. If the display is of an electric type, an operation of returning the refueling nozzle to the nozzle hook once during refueling is required, and the workability is poor.

[0006] An object of the present invention is to solve the above-mentioned disadvantages of the prior art, and even when refilling a large-capacity tank such as a kerosene lorry tank at a time, a special indicator is not separately provided, and usually up to the hundredth digit. The present invention provides a lubricating device that can arbitrarily switch and display the display up to the thousandth digit with the same display that displays the numerical value of the number, and can easily and reliably know the amount of lubrication to the large capacity tank at a glance. It is in.

[0007]

According to the present invention, in order to attain the above object, a segment indicating a decimal point is provided at two positions of a lower one digit and a lower two digits so that either one can be selected. A display unit having a display unit formed of five digits; a counting unit for counting a flow pulse signal of the flow meter; a display driving unit for displaying the count value on the display unit at a plurality of digits at a designated decimal point position; A control device having display switching determining means for outputting a switching signal to the display driving means so as to lower the decimal point position to the last digit when the count value of the counting means is larger than a predetermined value. It is.

[0008]

According to the first aspect of the present invention, when the count value becomes larger than the predetermined value, the position of the decimal point is shifted from the lower two digits to the lower one by the operation of the display driving means by the output from the display switching determining means.
As a result, the number of digits above the decimal point is increased from three to four, and a large number of digits can be displayed.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a block diagram of display control showing an embodiment of a fueling device of the present invention, and FIG. 2 is an explanatory diagram showing an embodiment of a fueling device of the present invention. First, the entire configuration of the fueling device will be described with reference to FIG. As described above, the oil supply pipe 2 communicating with the underground oil storage tank (not shown) is set up in the housing 1, and the oil supply pump 4 and the flow rate pulse transmitter 5 with the oil supply motor 3 connected in the middle of the oil supply pipe 2. A connected flow meter 6 is provided, and the tip of the oil supply pipe 2 is connected to an oil supply hose 8 having an oil supply nozzle 7 at the end outside the housing 1. In the figure, reference numeral 9 denotes a display for displaying the refueling amount, 11 denotes a nozzle hook, and the nozzle hook 11 is provided with a nozzle switch 12 which is turned on / off in conjunction with the removal / removal of the fuel nozzle 7.

In such a refueling device, the indicator 19 is shown in FIG.
As shown in FIG. 5, the display unit 19 is provided with one display unit in which seven segments are combined in a Japanese character shape and arranged in five digits, and the display unit 19 forms the number of display digits and a segment indicating a decimal point.
19a and 19b are provided at a total of two places, that is, a lower one digit position and a lower two digit position.

In the figure, reference numeral 10 denotes a control device using a conventionally known microcomputer or the like. As shown in FIG. 1, a pulse signal from the flow rate pulse transmitter 5 is introduced into the counting means 17 and counting from the counting means 17 is performed. The signal is introduced into the display driving means 14, and the amount of refueling is displayed on the display unit 19 of the display 9 according to the display signal of the display driving means 14. In the figure, reference numeral 16 denotes a numerical value which can be displayed by providing a decimal point at the last two digits of the storage means as a reference for switching, in this case, 999.99 is set and stored as a predetermined value. When the counted value is larger than the stored value by comparing the counted value from the stored value with the stored value of the storing means 16, a switching signal for switching the decimal point position to be shifted down to the last digit is output to the display driving means 14.

A nozzle removal signal from the nozzle switch 12 is introduced to the counting means 17 as a return-to-zero signal, and a nozzle removal signal from the nozzle switch 12 is introduced to the motor driving means 18 as an on / off signal for the refueling motor 3. I do.

Next, the operation will be described. For example, in order to refuel a large-capacity tank such as a kerosene lorry tank, when the refueling nozzle 7 is removed from the nozzle hook 11, the nozzle switch 12 turns on in conjunction with this and the ON signal is returned to the counting means 17. The signal is entered as a zero signal, and the previous refueling amount displayed on the display 19 is returned to zero. The ON signal of the nozzle switch 12 enters the motor driving means 18, and the output from the motor driving means 18 causes the refueling motor 3 to rotate and the refueling pump 4 to turn on.

If the oil supply nozzle 7 is inserted into the kerosene lorry tank and the valve is opened, the oil pumped up from the underground oil storage tank to the oil supply pipe 2 by the oil supply pump 4 is measured by the flow meter 6 and a flow pulse is transmitted. The pulse signal is output from the detector 5 to the counting means 17 as a pulse signal. The counting means 17 counts this pulse signal to count the flow rate. The display switching determination means 15 stores the count value from the counting means 17 in the storage means 16.
If the number is smaller than the predetermined value 999.99, a decimal point is specified at the last two digits, and the segment 19a at this position is selected. As shown in FIG. It is displayed like two digits "638.57".

When the counted value becomes larger than a predetermined value, the decimal point is instructed to be moved down to the lower one digit position, the segment 19b at this position is selected, and as shown in FIG. The refueling amount is displayed as shown below. Note that 99
In the case of lubrication of 9.99 liters or more, only one digit after the decimal point is displayed, and the exact amount of lubrication is unknown compared to the case of 999.99 liters or less. Since the refueling is performed as described above, no inconvenience occurs even if the detailed refueling amount is unknown.

When the refueling is completed and the refueling nozzle 7 is removed from the tank and returned to the nozzle holder 11, the nozzle switch 12 is turned off.
Is turned off, the off signal enters the motor driving means 18, and the output from the motor stops the fueling motor 3 and the fueling pump 4 and ends.

[0017]

As described above, the lubricating apparatus of the present invention
Even when refueling a large-capacity tank such as a kerosene lorry tank, the number of display digits is usually changed by simply changing the decimal point position and switching the display mode on the same display that shows the amount of refueling for a small-capacity tank such as a general passenger car. Can be displayed,
It is possible to display a large-capacity refueling amount with a large number of digits without having to interrupt the refueling operation on the way or calculating the total refueling amount separately, so that this can be easily known at a glance.

[Brief description of the drawings]

FIG. 1 is a block diagram of display control showing an embodiment of a fueling device of the present invention.

FIG. 2 is an explanatory view showing an embodiment of a fuel supply device of the present invention.

FIG. 3 is a front view showing an indicator of the fueling device of the present invention.

FIG. 4 is a front view showing an example of use of the indicator of the fueling device of the present invention.

FIG. 5 is a front view showing another example of use of the indicator of the fueling device of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Housing 2 ... Oil supply pipe 3 ... Oil supply motor 4 ... Oil supply pump 5 ... Flow rate pulse transmitter 6 ... Flow meter 7 ... Oil supply nozzle 8 ... Oil supply hose 9 ... Display 10 ... Control device 11 ... Nozzle hook 12 ... Nozzle switch 14 ... Display driving means 15 ... Display switching determining means 16 ... Storage means 17 ... Counting means 18 ... Motor driving means 19 ... Display units 19a and 19b ... Segments

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁷ , DB name) B67D 5/00-5/22

Claims (1)

(57) [Claims] 1. A display device having a display unit in which a segment indicating a decimal point is provided at two positions of a lower one digit and a lower two digits so as to be able to select one of them is provided. A counting means for counting the flow pulse signal of the meter, a display driving means for displaying the counted value on the display at a plurality of digits of the designated decimal point position, and a decimal point position when the counted value of the counting means is larger than a predetermined value. A control device having a display switching determining means for outputting a switching signal to the display driving means so as to lower the figure to the last digit.