JPH0615917Y2 - Refueling device - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to an oil supply device for supplying an oil liquid such as gasoline to a fuel tank of a vehicle.

[Conventional technology]

Generally, a refueling device for refueling a fuel tank includes a fixed pipe having one end connected to the oil storage tank, a pump driven by a pump motor and a flow meter for measuring the amount of refueling, which is provided in the middle of the fixed pipe, and the fixed pipe. Provided at the other end of the hose, a refueling nozzle provided at the tip of the hose to insert a discharge pipe at the tip into a fuel tank of a vehicle for refueling, and a predetermined storage position of the refueling nozzle. Nozzle housing detection means for detecting whether the fuel tank is housed or not, and the fueling nozzle is removed from a predetermined housing position, for example, the nozzle hook, and the discharge pipe of the fueling nozzle is inserted into the fueling port of the fuel tank and the valve is opened. Refueling is done by.

However, the pump motor is in a driving state by the non-storage detection signal output from the nozzle storage detection means when the fuel supply nozzle is removed from the nozzle hook, and the fuel supply is immediately performed by opening the fuel supply nozzle by operating the lever. Since the oil liquid is discharged from the nozzle, if the lever is erroneously operated even if the discharge pipe is not inserted in the oil supply port, the oil liquid will be discharged, which is not preferable for safety.

Therefore, in the conventional fueling nozzle, an insertion sensor composed of a phototransistor is provided at the tip of the discharge pipe to detect the brightness of external light, and the discharge pipe is inserted into the fueling port of the fuel tank to block external light. When the oil supply nozzle has a safety mechanism that drives the pump motor only when it is turned on and an inclination sensor that detects that the discharge pipe of the oil supply nozzle is tilted downward, the discharge pipe is inserted into the oil supply port of the fuel tank. There is also known a fueling nozzle having a safety mechanism in which the tilt sensor operates to drive the pump motor when the vehicle takes a refueling posture.

[Problems to be solved by the device]

By the way, in the refueling device equipped with the insertion state detecting means including the insertion sensor and the inclination sensor, even if the discharge pipe of the refueling nozzle is inserted into the refueling port of the fuel tank, the shape of the refueling port is concerned. , For example, the surroundings of the insertion sensor composed of a phototransistor that detects the light and darkness of the external light at the tip of the discharge pipe is bright, or the discharge pipe of the refueling nozzle is not tilted downward so that the tilt sensor operates. It may be necessary to operate the refueling nozzle as it is to refuel.

However, in this type of refueling device, during the refueling work in the above-described state, the pump motor is not driven because the insertion state detection means does not output a detection signal.

Therefore, in order to allow the fuel tank to refuel the fuel tank even in the above cases, the insertion state detection means quasi-detects the insertion state of the refueling nozzle into the refueling port regardless of the output from the insertion state detection means. Then, it is proposed that the detection signal is set as being output (non-operation state) and a non-operation switch for driving the pump motor is provided.

However, even if this non-operation switch is provided, after refueling is completed by operating the non-operation switch, it is necessary to cancel the setting of the non-operation state by operating the switch, or by mistake when the refueling nozzle is stored in the nozzle hook. If the switch is operated, remove the refueling nozzle from the nozzle hook without noticing that the non-operation state has been set by the operation of the non-operation switch after that, and it will be safe by the operation of the insertion state detection means. It is very dangerous if you try to refuel as if it was planned.

The present invention has been made in view of such a problem.In the present invention, even though the discharge pipe of the fueling nozzle is inserted in the fueling port of the fuel tank, the insertion state detecting means is Even if it does not operate, the insertion state detecting means quasily detects the insertion state of the oil supply nozzle into the oil supply port and outputs the detection signal (insertion detection signal output state). An object of the present invention is to provide an oil supply device with improved safety by including a non-operation switch.

[Means for Solving the Problems]

In order to achieve the above-mentioned object, the feature of the configuration adopted by the refueling device according to the present invention is the insertion detection that detects that the discharge pipe of the refueling nozzle is in the refueling port of the fuel tank and outputs a signal. Means, a refueling permission control means for instructing the drive of the pump motor when the signal from the insertion detecting means is output and the non-housing detection signal from the nozzle housing detecting means, and the insertion state detecting means. A non-operation switch for instructing the operation of the pump motor regardless of output, and the non-operation switch when the non-storage detection signal is output from the nozzle storage detection means to the oil supply permission control means. A setting circuit for setting an insertion detection signal output state when an operation signal is output from the switch, and a setting circuit when the storage detection signal is output from the nozzle storage detection means. In the provision of the reset circuit to release the setting of the insertion detection signal output state by the constant circuit.

[Action]

According to the refueling device of the present invention, it is detected that the refueling nozzle is in the non-housed state by the nozzle housing detecting means, and the insertion state detecting means detects that the discharge pipe of the fueling nozzle is inserted in the fuel tank. When detected, the refueling permission control means can drive the pump motor to perform refueling operation.

On the other hand, when refueling a fuel tank having a shape such that the insertion state detection means does not operate, the non-operation switch is operated, and when the non-storage detection signal is output from the nozzle storage detection means, the setting circuit simulates Set the insertion detection signal output status and perform the lubrication operation.

Further, as described above, even when the fueling nozzle is removed from the storage position and then the non-operation switch is operated to refuel, if the refueling nozzle is stored in the storage position, the reset circuit automatically performs the above-mentioned operation. The insertion detection signal output state set in the refueling operation is canceled.

Therefore, for the next refueling operation, when the refueling nozzle is removed from the storage position, the insertion state detecting means constantly detects the insertion state of the refueling nozzle into the fuel tank and outputs a detection signal (insertion state). Since the setting of (detection signal output state) has been canceled, the refueling permission control means must satisfy two conditions in which the signal from the insertion state detection means and the non-storage detection signal from the nozzle storage state detection means are input. Only then, it is possible to output a drive instruction to the pump motor.

〔Example〕

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

First, FIG. 1 shows an overall configuration diagram when the oil supply device is a fixed type oil supply device. In the figure, reference numeral 1 is a fixed type oil supply device, and the fixed type oil supply device 1 has a housing 2 provided on an island, and inside the housing 2, a fixed pipe leading to an underground tank (not shown) is provided. 3, a fixed pump 3 is provided with a pump 5 rotatably driven by a pump motor 4 and a flow meter 6 for measuring the amount of oil supply, and a flow rate pulse transmitter 7 is attached to the flow meter 6. Has been done. 8
Is a hose which is a flexible pipe, one end of the hose 8 is located on the side wall of the housing 2 and is connected to the other end of the fixed pipe 3, and the other end of the hose 8 is provided with an oil supply nozzle 9. .

Here, as shown in FIG. 2, the refueling nozzle 9 is provided with a nozzle body 9A and a discharge pipe 9B provided in the nozzle body 9A and inserted into a refueling port (not shown) of a fuel tank.
And a valve body 9C provided in the middle of the flow path in the nozzle body 9A, and an operation lever 9D for opening and closing the valve body 9C.

Reference numeral 10 denotes an insertion detector provided in the fueling nozzle 10. The insertion detector 10 is provided at the tip of the discharge pipe 9B, and has a phototransistor 10A for detecting the brightness of external light and a detection signal from the phototransistor 10A. And an insertion detection circuit 10B which determines the level and outputs an insertion signal (see FIG. 3).

On the other hand, 11 is an inclination detector provided in the fueling nozzle 10. The inclination detector 11 is provided with a ball rolling hole 11A formed in the nozzle body 9A and a ball rolling hole 11A so as to be rollable. A ball 11B that rolls to the front side (the side of the discharge pipe 9B) when the discharge pipe 9B is inserted into the oil supply port and is tilted to the oil supply position, and a photo that is disposed to face the front side of the ball rolling hole 11A. It is composed of a diode 11C and a phototransistor 11D, and a tilt detection circuit 11E which judges the level of a detection signal from the phototransistor 11D and outputs a tilt signal (see FIG. 3).

Next, 12 is a nozzle hook provided on the side wall of the housing 2 for housing the refueling nozzle 9, and 13 is a nozzle switch as nozzle housing detection means attached to the nozzle hook 12, and the nozzle switch 13 is a nozzle. When the refueling nozzle 9 is hung on the hook 12, it becomes OFF, and the refueling nozzle 9
Turns on when is removed.

Reference numeral 14 denotes a non-operation switch provided on the side wall of the housing 2, and the switch 14 is provided at the oil supply port to the discharge pipe 9
Even if B is inserted, for example, due to the shape of the filling port, the surroundings of the phototransistor 10A of the insertion detector 10 remain bright, or the tilt detector 11 is not tilted downward enough to operate. , Which is operated when the oil supply nozzle 9 must be operated for oil supply, and is configured as a normally open manual switch. By turning on the non-operation switch 14, in the case of the present embodiment, the safety function of the insertion state detecting means including the insertion detector 10 and the inclination detector 11 is set in the non-operation state. That is, regardless of the actual condition, the safety mechanism of the insertion state detecting means is in a non-operational state, which is equivalent to the insertion detection signal being supplied and output from the insertion state detecting means (insertion detection signal output). In the case of this embodiment, an insertion signal is supplied from the insertion detection circuit 10B of the insertion detector 10 and an inclination signal is output from the inclination detection circuit 11E of the inclination detector 11. These are equal pseudo insertion detection states (insertion detection signal output states). Of course, the non-operation switch 14 may be provided not only on the housing 2 but also on the refueling nozzle 9.

Further, reference numeral 15 denotes a control device provided in the housing 2, and the input side of the control device 15 has a flow pulse generator 7,
Insertion detector 10, tilt detector 11, nozzle switch 1
3, the non-operation switch 14 is connected, and the output side is connected to the oil supply amount indicator 16 and the pump motor drive circuit 17 for starting and stopping the pump motor 4. And the control device 1
Reference numeral 5 denotes a function for counting the flow rate pulses output from the flow rate pulse transmitter 7 and displaying them on the refueling amount display device 16, and a refueling permission control circuit 18 as a refueling permission control means shown in FIG.
It has a function of starting and stopping the pump motor 4.

Here, the refueling permission control circuit 18 outputs the inputs from the insertion detector 10 and the inclination detector 11 as an AND condition.
AND circuit 19 and the OR circuit 2 for outputting the outputs of the AND circuit 19 and the flip-flop circuit 24 under the OR condition.
0, a second AND circuit 21 that outputs a drive signal to the pump motor drive circuit 17 with the inputs from the OR circuit 20 and the nozzle switch 13 as an AND condition, and the inputs from the non-operation switch 14 and the nozzle switch 13. The third AND circuit 22 that outputs as a condition, and the nozzle switch 1
A negative logic one-shot circuit 23 that outputs a one-shot pulse at the falling edge of the input from 3 and the one-shot circuit 2
3 and a flip-flop circuit 24 which is reset by the output from the third AND circuit 22 and is set by the output from the third AND circuit 22. In the present embodiment, the third AND circuit 22 and the flip-flop circuit 24 constitute a setting circuit according to the present invention, and the one-shot circuit 23 constitutes a reset circuit according to the present invention.

As a result, the input from the nozzle switch 13 is "1" by the AND circuit 22 and the flip-flop circuit 24.
In the state, that is, when the refueling nozzle 9 is removed from the nozzle hook 12 and the nozzle switch 13 is ON, when the non-operation switch 14 is operated to the AND circuit 22 and the signal of the “1” state is supplied, The output Q of the flip-flop circuit 24 is set to the "1" state. As a result, a signal (“1” state) equivalent to the output (“1” state) of the AND circuit 19 when the inclination signal from the inclination detector 11 and the insertion signal from the insertion detector 10 is output is OR. It is adapted to be outputted to the AND circuit 21 via the circuit 20. The output Q of the flip-flop circuit 24 in the “1” state is applied to the fuel supply nozzle 9 by the nozzle hook 12
When the nozzle switch 13 is turned off and the output changes from the “1” state to the “0” state, the reset input of the flip-flop circuit 24 in the set state (“1” state) is output from the output of the negative logic one-shot circuit 23. A reset signal is supplied to R. Therefore, the flip-flop circuit 24
From the output Q of the signal (“1” state) equivalent to the output (“1” state) of the AND circuit 19 when the inclination signal from the inclination detector 11 and the insertion signal from the insertion detector 10 are output. ) Is no longer output.

The present embodiment is constructed in this way, and its operation will be described next with reference to FIG.

First, the section A in FIG. 4 shows the operation when the safety function is exhibited.
When it is removed from No. 2, the nozzle switch 13 is turned ON. When the refueling nozzle 9 is tilted in the downward refueling posture so as to be inserted into the refueling port of the fuel tank, the ball 11B of the tilt detector 11 rolls forward in the ball rolling hole 11A and the photodiode 11C. It is interposed between the phototransistor 11D and cuts off the emitted light to detect the inclination. If the discharge pipe 9B is inserted into the fuel filling port in this state, the ambient atmosphere becomes dark, and the insertion detector 10 detects the insertion. As a result, the output signals from the inclination detector 11 and the insertion detector 10 are input to the first AND circuit 19 that constitutes the refueling permission control circuit 18, and the output thereof is output to the second AND circuit via the OR circuit 20.
Of the AND circuit 21 and the output thereof is input to the pump motor drive circuit 17 as a motor drive signal. Thus, the pump motor 4 is activated and the pump 5 is driven.

In this state, if the valve body 9C is opened by the operation lever 9D of the refueling nozzle 9, the oil liquid in the underground tank will be fixed pipe 3,
It is discharged from the oil supply nozzle 9 via the pump 5, the flow meter 6, and the hose 8. The flow rate at this time is measured by the flow meter 6 and displayed on the oil supply amount indicator 16.

Then, when the fueling nozzle 9 is closed and the discharge pipe 9B is separated from the fueling port in order to finish the fueling, the output from the insertion detector 10 is stopped and the ANDing condition of the first AND circuit 19 is satisfied. Since it disappears, the output from the second AND circuit 21 to the pump motor drive circuit 17 also stops, and the drive of the pump motor 4 is stopped. Then, if the refueling nozzle 9 is hooked on the nozzle hook 12, the nozzle switch 13 is also turned off.
Then, one refueling operation is completed.

As described above, in this embodiment, the pump motor 4 is started under these AND conditions only when the tilt detector 11 detects the fueling posture of the fueling nozzle 9 and the insertion detector 10 detects the insertion of the discharge pipe 9B. However, since the configuration is such that the refueling permission is given, it is possible to prevent a situation in which the oil liquid is inadvertently discharged and to provide a fail-safe refueling device.

On the other hand, the section B in FIG.
The operation when the non-operation switch 14 is operated in a state in which the switch is set to 2 is shown. However, in this case, the nozzle switch 13
Is off, the third AND circuit 22 does not output a signal, and the flip-flop circuit 24 remains reset. Therefore, there is no output from the second AND circuit 21, and the pump motor 4 is started. do not do.

Further, a section C in FIG. 4 shows an operation when the non-operation switch 14 is operated with the refueling nozzle 9 removed from the nozzle hook 12. In this case, the nozzle switch 13 is O
Since it is N, the flip-flop circuit 24 is set by the output of the third AND circuit 22, and its output is input to the second AND circuit 21 via the OR circuit 20. As a result, when the non-operation switch 14 is operated, the pump motor 4 can be started based on the output from the second AND circuit 21 regardless of the detection states of the insertion detector 10 and the inclination detector 11. Therefore, the safety confirmation function operates in the same manner as when it is in the non-operating state, and it can be used as a normal refueling nozzle. Then, the refueling nozzle 9 is hooked on the nozzle hook 12, and the nozzle switch 13 is turned on.
If it becomes FF, the one-shot pulse from the one-shot circuit 23 resets the flip-flop circuit 24,
The output from the second AND circuit 21 also stops, and the drive of the pump motor 4 is stopped.

In the above embodiment, the fixed type oil supply device 1 is used as the oil supply device.
However, the present invention may be applied to a suspension type oil supply device in which an oil supply nozzle is suspended from a height of a gas supply station so as to be lifted and lowered.

Further, in the above embodiment, the insertion state detecting means is the insertion detector 1.
0 and an inclination detector 11, each of the detectors 10 and 1
By connecting the output from the first AND circuit 19 to the first AND circuit 19, the AND circuit 19 outputs the output only under the AND conditions satisfying both of them. However, the present invention is not limited to this, and the insertion state detecting means is not limited thereto. May be composed of either the insertion detector 10 or the inclination detector 11.

On the other hand, although the insertion detector 10 is exemplified by an optical sensor using the phototransistor 10A, it is sufficient if it can detect that the discharge pipe 9B is inserted into the fuel filler port, and it can be used as an ultrasonic operation sensor or a capacitance insertion sensor. Good. The tilt detector 11 is also an optical sensor including the ball 11B and a photocoupler, but a limit switch sensor including a ball and a limit switch, a mercury sensor based on the tilt of mercury, or the like may be used.

Further, the refueling permission control circuit 18 is not limited to the logic circuit shown in FIG. 3 and may be realized by software using a microcomputer.

[Effect of device]

The refueling device according to the present invention is as described above in detail, and when the signal is output from the insertion state detection means and the non-storage detection signal is output from the nozzle storage detection means, an instruction to drive the pump motor is issued. The refueling permission control means includes a setting circuit for setting an insertion detection signal output state when an operation signal is output from the non-operation switch when the non-storage detection signal is output from the nozzle storage detection means, and the nozzle. When the storage detection signal is output from the storage detection means, a reset circuit is provided for canceling the setting of the insertion detection signal output state by this setting circuit, so that even if the discharge pipe is inserted into the fuel supply port, Even if the insertion state detection means does not operate due to the shape etc., this insertion state detection means artificially detects the insertion state of the oil supply nozzle into the oil supply port. Insertion detection can be performed by preventing the erroneous operation of the non-operation switch for setting the state in which the detection signal is being output (insertion detection signal output state), and by outputting the storage detection signal from the nozzle storage detection means to the reset circuit. By setting the signal output state to be canceled, it is possible to improve the safety in operating the non-operation switch.

[Brief description of drawings]

FIG. 1 is an overall configuration diagram of a refueling device according to the present embodiment, FIG. 2 is an external view of a main part fracture showing the configuration of a refueling nozzle, FIG. 3 is a circuit diagram showing a refueling permission control circuit, and FIG. 4 is a refueling process. It is explanatory drawing which shows operation | movement of a permission control circuit. 1 ... Fixed lubrication device, 2 ... Housing, 3 ... Fixed piping, 4 ... Pump motor, 5 ... Pump, 6 ... Flowmeter, 8 ... Hose, 9 ... Fluid nozzle, 10 ... Insertion detector (insertion state detection means), 11 ... Inclination detector (insertion state detection means), 13 ... Nozzle switch (nozzle housing detection means), 14 ... Inactive switch, 15 ... Control device, 16 ... ... Lubrication amount indicator, 17 ... Pump motor drive circuit, 18 ... Lubrication permission control circuit (lubrication permission control means), 22 ... AND circuit (setting circuit), 23 ... One-shot circuit (reset circuit), 24 ... Flip-flop circuit (setting circuit).

Claims (1)

[Scope of utility model registration request] 1. A fixed pipe having one end connected to an oil storage tank, a pump driven by a pump motor and a flow meter for measuring the amount of oil supply, which is provided in the middle of the fixed pipe, and the other end of the fixed pipe. And a refueling nozzle that is provided at the tip of the hose and that inserts the discharge pipe at the tip into the fuel tank of the vehicle for refueling, and whether to store or not store the refueling nozzle at a predetermined predetermined storage position. In a refueling device comprising a nozzle storage detecting means for detecting, an insertion state detecting means for detecting that the discharge pipe of the refueling nozzle is in an insertion state in the refueling port of the fuel tank, and outputting a signal, and the insertion state. Refueling permission control means for instructing the drive of the pump motor when the signal from the detection means is output and the non-storage detection signal is output from the nozzle storage detection means, A non-operation switch for instructing the drive of the pump motor regardless of the output from the insertion state detection means, and a non-storage detection signal is output from the nozzle storage detection means to the refueling permission control means. Setting circuit that sets the insertion detection signal output state when the operation signal is output from the non-operation switch while the insertion detection signal is output from the nozzle storage detection unit when the insertion detection signal is output. A refueling device comprising a reset circuit for canceling the setting of the output state.