JPS581697A - Lubricating device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a refueling device that stops a motor that drives a pump when a refueling nozzle is closed, thereby saving unnecessary electric power of the motor.

Conventionally, a pump driven by a motor and a flow meter were installed in the middle of a pipe whose one end was connected to a tank, a hose was connected to the other end of the pipe, and a hose was installed at the tip of the hose to prevent overflow. A refueling nozzle having an automatic valve closing mechanism is provided, and a nozzle hook for storing the refueling nozzle is provided with a nozzle switch that starts the pump and resets the display hand when the refueling nozzle is removed from the nozzle hook. However, in the conventional refueling apparatus described above, the refueling nozzle is removed from the nozzle hook, inserted into the fuel tank of the vehicle, and the multi-nozzle/4 loop is opened using the refueling lever. The motor continues to rotate because the nozzle switch is closed, even though the automatic valve-closing mechanism to prevent overflow is activated during the refueling operation, causing the refueling to stop. For this reason, there is a drawback that power is wasted even when refueling is not actually performed.

The present invention is an improvement on the drawbacks of the oil supply system according to the prior art, and will be described below with reference to embodiments shown in the drawings.

Figure 1 shows a system diagram of the oil supply system of the present invention as a fixed weighing machine, with the front/l panel removed. , 3 is a motor for driving the pump, and 4 is a flow needle provided on the discharge side of the bonde 2.

5 is a fixed pipe, one end of which is connected to an underground tank, and the other end connected to a hose 6 via a pump 2 and a flow meter 4. 7 is a refueling nozzle provided at the tip of the hose 6, and the refueling nozzle 7 includes a negative pressure pipe that detects the liquid level in the fuel tank of the vehicle, and an automatic valve closing mechanism that operates when the negative pressure pipe is blocked by the liquid level. A known refueling nozzle with an automatic valve closing mechanism is used.

Further, the flow meter 4 is provided with a .gurus transmitter 8 which transmits a II rus proportional to the flow rate. The signal is input to the refueling stop detection circuit 16, which is detailed in FIG. Reference numeral 10 denotes an electrical display for displaying the amount of oil supplied in response to a drive signal from the cough counting circuit 9. As the display 10, an inverting display, a liquid crystal display, or a plasma display is used. In addition, display unit 1
0 may not be an electrical indicator, but may be a mechanical indicator with an index wheel.

Reference numeral 11 indicates a nozzle hook as a nozzle storage device provided on the side wall of the frame 1, and the nozzle hook 11 is composed of a pedestal 11A and a nozzle tip storage opening 11B. A nozzle switch 12 is provided near the nozzle hook 11, and the nozzle switch 12 has a switch section 12A and a refueling nozzle 7.
is properly placed on the nozzle hook 11, the refueling nozzle 7
It consists of an actuating piece 12B that is operated by. here,
In the nozzle switch 12, when the refueling nozzle 7 is placed on the nozzle hook 11, the actuating piece 12B is pushed against the spring and the switch portion 12A is opened.On the other hand, when the refueling nozzle 7 is removed from the nozzle hook 11, the actuating piece 12B is pushed against the spring. The actuating piece 11B is returned by the spring and the switch portion 12m thereof is closed.

In FIG. 1, 13 is a normally open restart switch provided in the middle of the hose 6 near the refueling nozzle 7. - This is to start up the computer 3 again.

Next, FIG. 2 shows a bond drive control circuit, in which a three-phase AC power source E is connected to the motor 3 via a power switch 14 and a contact 15A of an electromagnetic switch 15. Reference numeral 16 denotes a refueling stop detection circuit provided in the frame 1, and the scissor refueling stop detecting circuit 16 receives a nozzle from the IQ pulse transmitter 8, and removes the refueling nozzle 7 from the nozzle hook ttll and closes the nozzle switch 12. The signal when the restart switch 13 is turned on and the signal when the restart switch 13 is closed are input, and the coil 15B of the electromagnetic switch 15 is excited by the operation described later, the contact 15A thereof is closed, and the starter 3 is started. It is something to do.

In FIG. 2, the counting circuit 9 is configured such that when the nozzle switch 12 is closed, the previous oil supply amount stored in the counting circuit 9 and displayed on the display 10 is reset.

Furthermore, FIG. 3 shows the refueling stop detection circuit 16 in FIG.
17 shows the specific configuration of the nozzle switch 12.
a monostable 1/4 ibrator (hereinafter referred to as the MM circuit 17) which oscillates a signal when the circuit is closed;
18 is a restart.

Another monostable multi-no 9 ibrator (hereinafter referred to as MM circuit 18) transmits the signal that closes the circuit 13, and 19 is an amplifier that amplifies the notarus from the arm oscillator 8. The circuit is shown in which MM circuits 17 and 18 and amplifier circuits 19f'i are connected to an integrating circuit 20 via backflow prevention diodes D, respectively. The integration circuit 20 performs a delay operation proportional to the time constant CIRIK, which is different from the capacitor r Ct and m resistor RI. The integrating circuit 20 is connected to the input side of the voltage comparison circuit 21, and the input side of the voltage comparison circuit 210 is connected to the constant voltage circuit 22.

The voltage comparison circuit 21 receives the input voltage Vin from the integration circuit 20.
is compared with the standard voltages vr and f from the constant voltage circuit 22, and when Vtn > Vret O, an output of "■" level is generated, and the coil 15B of the electromagnetic switch 15 is energized and its contact 15A is closed. It is something that can be achieved.

The refueling device of the present invention is configured in this manner; its operation will be described next.

When the refueling nozzle 7 is removed from the nozzle hook 11, the nozzle switch 12 is closed, the counting circuit 9 and the display 10 are reset, and the signal from the nozzle switch 12 is input to the MM circuit 17. The output signal from the MM circuit 17 is input to the integrating circuit 20, and charges the capacitor CI. The charge stored in the combination T C proverb is the resistance R1
The voltage is discharged slowly through the voltage comparator circuit 21 and input to the voltage comparator circuit 21. The voltage comparison circuit 21 receives the input W from the integral loop 20.
in and the standard voltage Vref from the constant voltage circuit 22, and when Vln>Vrd, an rHJ level signal is output. As a result, the coil 15B of the electromagnetic switch 15 is excited and the contact 15A is closed, and if the power switch 14 is closed, the motor 3 is started.
Bomb f2 is driven.Next, insert the refueling nozzle 7 into the fuel tank of the vehicle and open the nozzle pulp valve, the oil in the tank will flow through the pipe 5, pipe 2, flow meter 4, and hose 6. Refueled via. At this time, regarding the rotation of the flowmeter 4, the pulse transmitter 8 transmits a pulse proportional to the flow rate, which is input to the counting circuit 9, converted into binary code and decimal, and then sent to the drive circuit (not shown). The amount of refueling is displayed on the fuel indicator 10.

On the other hand, the pulse from the pulse oscillator 8 is input to the integrating circuit 20 via the amplifier 19, and is charged to the capacitor CI, while being slowly discharged through the resistor 8. but,
If the metering continues and pulses arrive continuously from the z4 pulse oscillator 8, more electricity will be stored than discharged from the capacitor CI, and Vin > Vr*f, and the voltage comparator circuit 2
Coil 15B of electromagnetic switch 15 by output 1 to 9
continues excitation.

However, when the fuel tank becomes 1 full and the automatic valve closing mechanism of the refueling nozzle 7 is activated and the refueling nozzle 7 closes, or when the refueling nozzle 7 is artificially closed. - The pulse generator 8 that emits pulses no longer emits pulses.

As a result, more discharge from capacitor CI occurs,
The output Vin from the integrating circuit 20 gradually decreases until vin
≦V,. When the voltage reaches f, the output from the voltage comparator circuit 21 reaches rLJ level and stops. Therefore, the coil 1511 of the electromagnetic switch 15 is demagnetized, the contact 15A is opened, and the motor 3 stops driving. In this way, when the /9 pulse is not transmitted from the pulse transmitter 8 or when the pulse interval between pulses becomes extremely long, the motor 3 can stop driving. Power can be saved.

In this state, to restart the refueling operation, turn on the restart switch 13 installed near the refueling nozzle 7.
Charge is again stored in the capacitor CI of the seven integrating circuit 20 via the MM circuit 18, and when Vin > Vr*f,
The output from the voltage comparison circuit w121 becomes rHJ level, and the coil 15B of the electromagnetic switch 15 is energized again, and the contact 1
5 is closed and the drive of the motor 3 is resumed. In this state, by opening the nozzle pulp of the refueling nozzle 7, the refueling operation can be started in the same manner as described above.

Next, FIG. 1 shows another embodiment of the refueling stop detection circuit 16 according to the present invention, and the same components as in FIG. 3 are given the same reference numerals. The feature of this embodiment is that after the refueling nozzle 7 is removed from the nozzle hook 11, a long counting period is required until the refueling nozzle 7 is inserted into the fuel tank and the refueling operation is started. capacitor cps
Another integration circuit 30 consisting of a resistor R is provided, and the time constant of the scissor integration circuit 300 is made longer than the time constant of the above-mentioned integration circuit 20.

That is, in FIG. 4, the integrating circuit 30 has C,s R*
The nozzle switch 12 is connected to the voltage comparison circuit 31 via the MM circuit 17 and the integration circuit 30.
Connected to the 0 input side. Also, the restart switch 13 is connected to the input side of the voltage comparison circuit 210 via the MM circuit 18 and the integration circuit 20, and the K/4' pulse oscillator 8 is connected to the input side of the voltage comparison circuit 210 via the MM circuit 18 and the integration circuit 20. It is connected to the input side of the comparison circuit 21. The constant voltage circuit 22 is connected to each voltage comparison circuit 21.31, and a standard voltage Vrsf is applied thereto. Furthermore, 'each voltage comparator circuit 21.31
The output side of is connected to the input side of the OR circuit 32, and the output side of the OR circuit 32 is connected to the coil 151 of the switch 15.
1 is connected.

Although the present embodiment is configured as described above, the time constants C, R of the integrating circuit 30 are compared with the time constants C, R, of the integrating circuit 20,
Cm Rt ) Cm Rt, so even if it takes a long time in the trench to remove the refueling nozzle 7 from the nozzle hook 11, insert the scissors refueling nozzle 7 into the fuel tank, and start refueling work. , the time for the rHJ level signal output from the voltage comparator circuit 31 can be lengthened. Therefore, the time for exciting the coil 1511 via the OR circuit 32 can be lengthened φ! As a result, the time until the motor 3 stops can be lengthened, and the operability of the refueling nozzle 7 can be improved.

On the other hand, the signal from the armpit: Since the oil supply is input to the coil 158, the refueling operation continues while the refueling nozzle 7 is open.
Since there is no difference from the embodiment shown in the figure, the explanation thereof will be omitted.

In addition, in the embodiment of the present invention, a case has been described in which a fixed gasoline metering machine is provided with a nozzle hook 11 and a nozzle switch 12 is provided on the nozzle hook 11. 7 can be applied to a suspended gasoline metering machine.

That is, FIG. 5 shows another embodiment of the present invention, and parts having the same functions as those shown in FIG. 1 are given the same reference numerals. is provided with a nozzle elevating device 42 as a nozzle storage device, and the nozzle elevating device 42 is provided with a switch 43 which is turned on when the refueling nozzle 7 has descended to a predetermined height. Here, the nozzle lifting device 42 consists of a reel 428 and a motor 42B for driving the reel 42m.

The pipe 43 detects the rotation of the reel 42At or the motor 42B, and opens when the refueling nozzle 7 rises to a predetermined height.
It closes when the nozzle switch 12 descends to a predetermined height, and has the same function as the nozzle switch 12 shown in FIG.

Therefore, the switch 43 of this embodiment is replaced by the switch 1 of FIG.
2 may be replaced with the circuit shown in FIG. 2, and its operation is the same as that of the previous embodiment, so a description thereof will be omitted.

Further, in each embodiment, a restart switch is provided.

Although the pipe 13 has been described as being provided near the refueling nozzle 7, it may also be provided on the frame 1 of the weighing machine, the side wall of the building, etc. Furthermore, in addition to adjusting the time constant of the integrating circuit 20.3(1) as appropriate, a microcombi circuit 20.3 (1) is used in place of each integrating circuit 20.30 and the voltage comparison circuit 21.
It may be configured such that when the alarm pulse transmitter 8 does not receive a pulse for a predetermined period of time, a signal for stopping the activation of the motor 3 is transmitted from the beginning to the end.

As described in detail above, the refueling device according to the present invention is provided with a refueling stop detection circuit that detects when refueling is stopped by a Noculus signal from a lubricant transmitter provided in a flow meter, and the refueling stop detecting circuit Since the system is connected to the pump motor and configured to stop the motor using the output from the refueling stop detection circuit, when the refueling nozzle is closed by the automatic valve closing mechanism or artificially, the motor is stopped. It can be stopped automatically, and therefore, wasteful electric power generated by the motor except during refueling work can be saved. Furthermore, if a restart switch is provided, refueling work can be restarted at any time. Furthermore, if the refueling nozzle is connected to the nozzle switch provided in the nozzle storage device to the refueling stop detection circuit, it is possible to automatically start the pump motor.

[Brief explanation of the drawing]

Figure 1 is a system diagram with the front and armpit removed when the oil supply device according to the present invention is a fixed metering machine, Figure 2 is a circuit diagram showing the pump drive control circuit, Figures 3 and 4 are Circuit diagrams showing different embodiments of the refueling stop detection circuit, and FIG. 5 is a system diagram when the refueling device according to the present invention is a suspended measuring machine. 1...Frame body, 2...Pump , 3...Motor, 4...Flowmeter, 5...Piping, 6...Hose,
7... Refueling nozzle, 8... Pulse transmitter, 11...
・Nozzle hook, 12... Nozzle switch, 13...
Restart switch, 15... Electromagnetic switch, 16.
...Refueling stop detection circuit, 17°18...MM circuit, 1
9...Amplification circuit, 20.30-...Integrator circuit, 21.
31... Voltage comparison circuit, 32... OR circuit, 42...
...Nozzle lifting device, 43...switch. Figure 1 0 Figure 2 15A Figure 3

Claims (1)

[Claims] A tank driven by a motor and a flow rate needle having a /f pulse transmitter that transmits a pulse proportional to the measured flow rate are provided in the middle of the piping whose one end is to be connected to the tank, and the other end of the piping is connected to the tank. A hose is connected to the end, and a refueling nozzle is provided at the tip of the hose.In the refueling device, a refueling stop detection circuit is installed to detect when refueling is stopped using a pulse signal from the delta pulse transmitter. A refueling device characterized in that a refueling stop detection circuit is connected to the motor, and the motor is stopped by an output from the refueling stop detecting circuit.