JPH032756B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a refueling device used at gasoline filling stations for automobiles, and particularly relates to a method of displaying the amount of refueling using a refueling amount indicator.

[Conventional technology]

If there are multiple refueling devices used at a gas station,
There are also multiple refueling amount display gauges, and especially with hanging hose type refueling devices, the refueling amount display gauges on the part of the device that refuels are separated, so you can easily see which one of the refueling amount display gauges is currently being refueled in your car. It is often difficult to determine whether the display meter is

Therefore, in Japanese Utility Model Application Publication No. 55-154291, a lamp is provided in the oil supply amount display meter, and this lamp blinks during refueling, but does not blink after refueling, so that it is possible to check whether the oil amount display meter is in the refueling state. I'm trying to let you know.

Further, in Japanese Utility Model Application Publication No. 55-36395, a lamp and a speaker are attached to the weighing machine, and a sound from the speaker and a blinking lamp indicate that refueling is in progress.

[Problem to be solved by the invention]

However, all of these conventional devices require separate notification devices such as lamps, resulting in high costs.

In addition, in order to distinguish between refueling and non-refueling on multiple refueling quantity display gauges lined up, it is important to place the numerical display part of the refueling quantity display gauge and the notification lamp as close together as possible. Since it is not possible to do the same, it remains difficult to see.

The object of the present invention is to solve the above-mentioned inconveniences, and to provide a refueling device that can distinguish at a glance whether refueling is in progress or after refueling has been completed, and as a result, the indicator of the refueling device used to refuel the vehicle can be clearly recognized. The purpose of this invention is to provide a method for displaying amounts.

[Means to solve the problem]

In order to achieve the above-mentioned object, the present invention provides a refueling device using a dot display as a refueling amount indicator, which includes a positive drive circuit that lights up only the number display part of the dot display, and a negative drive circuit that lights up only the non-display part. A display meter drive circuit equipped with a refueling end detection means is provided, and during refueling, either a positive drive circuit or a negative drive circuit of the display meter drive circuit displays a dot display in a negative state or a positive state. After refueling, either the positive drive circuit or the negative drive circuit that was being driven during refueling is switched to the other circuit using the refueling end detection signal from the refueling end detection means, which is opposite to the display indicating that refueling is in progress. The purpose is to display the image in a positive or negative state.

[Effect]

According to the present invention, whether refueling is in progress or completed is indicated by whether the numerical display of the refueling amount indicator is negative or positive, so it can be clearly indicated without providing a separate lamp or the like.

〔Example〕

Embodiments of the present invention will be described in detail below with reference to the drawings.

FIG. 1 is an external perspective view of a refueling station implementing the refueling amount display method for a refueling apparatus of the present invention, and FIG. 2 is a block circuit diagram showing an embodiment of the method of the present invention.

In the figure, reference numeral 1 indicates a fueling station, and a fueling hose 4 is suspended from a hose storage device 3 provided in a canopy 2 of the filling station 1, and a nozzle valve 5 is attached to the tip thereof.

There is a refueling amount display meter 1 on the wall of office 14 of gas station 1.
5, 15', 15''... is installed, but this display meter 1
5 uses a dot display as shown in FIGS. 3 and 4.

Various types of dots can be considered, such as plasma displays, liquid crystal displays, displays using magnetic reversal plates, etc., but plasma displays are considered to be free of wire breakage, have excellent temperature resistance, and have a fast response speed. The display is excellent.

In addition, the number of dots is 15 in total, 5 vertically and 3 horizontally, as shown in Figures 3 and 4, and in addition to displaying a number of at least 4 digits. Various applications are possible.

20 in the figure is a display meter drive circuit that drives the refueling amount display meter 15, which includes a positive drive circuit that lights only the numerical display portion of the dot display as described later;
It has a negative drive circuit that lights only the non-display areas.

In the hose storage device 3, as shown in FIG. 2, the refueling hose 4 is wound around a hose reel 7 connected to a motor 6, and this hose reel 7 has a function of detecting the hose position. Cam switch box 8 is connected.

The base end of the refueling hose 4 is connected to a refueling pipe 9 that communicates with an underground tank (not shown), a refueling pump 10 and a flow meter 11 are sequentially provided in the middle of the refueling pipe 9, and a refueling motor 12 is connected to the refueling pump 10. or connect the flow rate pulse transmitter 13 to the flow meter 11.

A refueling hose lowering switch 16 and a raising switch 17 are provided near the nozzle valve 5, and an on-signal A of the lowering switch 16 and an on-signal B of the ascending switch 17 are introduced into the motor control circuit 18, respectively.
The drive signal C of the motor control circuit 18 is sent to the motor 6.
to be introduced.

Among the output signals of the cam switch box 8, the output signal D that is emitted when the hose 4 is lowered to a predetermined position is sent to the motor control circuit 18 as an off signal D-1, and to the motor control circuit 19 as an on signal D-2. The signal is introduced into the counting circuit 21 as a reset signal D-3, and into the display drive circuit 20 as a negative->positive (or vice versa) switching signal D-4.

Similarly, an off signal E, which is generated when the refueling hose 4 rises a little with the output signal of the cam switch box 8, is introduced into the motor control circuit 19, and an output signal F, which is generated when the refueling hose 4 is completely wound up, is also input to the motor control circuit 19. is introduced into the motor control circuit 18 as an off signal F-1, and into the display meter drive circuit 20 as a positive→negative (the reverse is also possible) switching signal F-2.

The drive signal G from the motor control circuit 19 is introduced into the motor 12, the flow signal H from the flow rate pulse generator 13 of the flowmeter 11 is introduced into the counting circuit 21, and the count signal I from the counting circuit 21 is used to drive the display meter. The drive signal J from the display meter drive circuit 20 is introduced into the display meter 15.

Next, usage and operation will be explained. When refueling, press the down switch 16 and the switch 16 will send an on signal A to the motor control circuit 1.
8, the motor 6 rotates forward in response to the drive signal C from the motor control circuit 19, and the hose reel 7
rotates in the normal direction, the refueling hose 4 is fed out, and the nozzle valve 5 is lowered.

As the hose reel 7 rotates, the cam switch box 8 also rotates, and when the nozzle valve 5 comes to the refueling position, an output signal D is generated, which is the off signal D.
-1 is introduced into the motor control circuit 18 and the drive signal C from the motor control circuit 18 to the motor 6 disappears, after which the refueling hose 4 and the nozzle valve 5 stop lowering.

Further, the output signal D is introduced as an ON signal D-2 to the motor control circuit 19, and the motor control circuit 19 issues a drive signal G to the refueling motor 12, so that the refueling motor 12 rotates and the refueling pump 10 rotates.

Furthermore, the above output signal D is introduced into the counting circuit 21 as a reset signal D-3, and the previous count value of the counting circuit 21 is returned to zero, and a negative to positive switching signal D is generated.
-4 is introduced into the display meter drive circuit 20, and the circuit 20 receives this signal D-4, and from then on, the circuit 20 is configured to perform a positive display (the number display area is positive, and the area other than this number display area is negative). configured.

When the nozzle valve 5 is inserted into the fuel filler port of a car to refuel, the flow rate pulse transmitter 1 of the flow meter 11 is activated.
3, the flow rate signal H is introduced into the counting circuit 21 and counted, and the counted value is transmitted as a count signal I to the display meter drive circuit 20, and the display meter 15 is activated by the drive signal J from the display meter drive circuit 20 as shown in FIG. For example, the refueling amount is sequentially displayed using dots such as 32 and 58 in a positive display where only the numerical display parts are lit.

When refueling is completed and the lift switch 17 is pressed, the switch 17 issues an ON signal B to the motor control circuit 18, and the motor 6 and hose reel 7 are activated by the drive signal C from the motor control circuit 18.
is reversed, the refueling hose 4 is wound onto the reel 7, and the nozzle valve 5 is raised.

As the reel 7 reverses, the cam switch box 3 also reverses, and when the refueling hose 4 is slightly wound up, an off signal E is introduced from the cam switch box 8 to the motor control circuit 19, and from the motor control circuit 19 to the refueling motor 12. The drive signal G that had been emitted disappeared and the motor 12 and pump 10
stops.

Furthermore, when the refueling hose 4 is completely wound up and the nozzle valve 5 reaches the completely raised position, an output signal F is generated from the cam switch box 8, which is introduced to the motor control circuit 18 as an off signal F-1, and is driven. The signal C disappears, the motor 6 and the reel 7 stop rotating in reverse, and the nozzle valve 5 stops rising thereafter.

In addition, the above output signal F is a positive → negative switching signal F.
-2 is introduced into the display meter drive circuit 20, and the circuit 20 receives this, and from then on, the circuit 20 makes the display negative (the number display part is turned off to make it dark, and the part other than the number display part is lit to make it positive). The circuit is constructed as shown in FIG.

〔Effect of the invention〕

As described above, the refueling amount display method of the refueling device of the present invention uses a dot display as the refueling amount indicator, and during refueling, it is either positive or negative, and after refueling, it is displayed as refueling. Since it was decided to display either the opposite negative or positive, it is possible to display whether refueling is in progress or after refueling using only the refueling amount display meter without providing a separate lamp or the like.

Furthermore, since the entire refueling amount indicator is displayed, the display during refueling is particularly useful when multiple refueling amount indicators are lined up in a hanging hose-type refueling device at a distance from the refueling location. It is possible to clearly determine from a distance whether the display is after refueling has been completed, and it is possible to easily locate the indicator of the device used for refueling.

[Brief explanation of the drawing]

Fig. 1 is an external perspective view of a refueling station that implements the refueling amount display method of the refueling device of the present invention, Fig. 2 is a block circuit diagram showing an embodiment of the present invention, and Figs. 3 and 4 are refueling amount display meters. FIG. 1...Refueling station, 2...Canopy, 3...Hose storage device, 4...Refueling hose, 5...Nozzle valve, 6...Motor, 7...Hose reel, 8
...Cam switch box, 9...Oil supply pipe, 10
...Refueling pump, 11...Flow meter, 12...Refueling motor, 13...Flow rate pulse transmitter, 14...
Office, 15, 15', 15''...Refueling amount indicator,
16...Down switch, 17...Up switch,
18...Motor control circuit, 19...Motor control circuit, 20...Display meter drive circuit, 21...Counter circuit.

Claims (1)

[Claims] 1. In a refueling device that uses a dot display as a refueling amount indicator, a positive drive circuit that lights only the numerical display part of the dot display;
A display meter drive circuit is provided with a negative drive circuit that lights only the non-displayed area, and a refueling end detection means, and during refueling, either the positive drive circuit or the negative drive circuit of the display meter drive circuit is used. Display the dot display in negative or positive state,
After refueling, either the positive drive circuit or the negative drive circuit that was being driven during refueling is switched to the other circuit using the refueling end detection signal from the refueling end detection means, and the display is opposite to the one displayed during refueling. A method of displaying a refueling amount of a refueling device characterized by displaying the amount in a positive state or a negative state.