JPH0335199B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an improvement in a refueling nozzle attached to a refueling device.

[Conventional technology]

The refueling device is controlled by a refueling start signal, a refueling stop signal, and the like.

In a conventional refueling device fixed on an island, the refueling nozzle hung on the nozzle hook,
The oil supply system is controlled by a signal emitted from a switch that opens and closes in conjunction with hooking and unloading. In addition, in a suspension type refueling device in which a refueling hose is suspended from the ceiling, a switch that opens and closes in conjunction with the raising and lowering of the refueling hose, or a signal emitted from a switch installed in the middle of the refueling hose is used.

[Problem to be solved by the invention]

In any refueling device, the switch that issues the control signal is located at a distance from the refueling nozzle, and in order to issue the control signal, the refueling nozzle must be attached to and removed from the nozzle hook, or the refueling hose must be moved up and down. In some cases, the system may not be able to stop refueling in time when danger is sensed and the system needs to stop refueling in an emergency, or it may be difficult to refuel multiple vehicles in succession. It is desirable that the switch for such control be operated easily, quickly, and reliably.

The object of the present invention is to satisfy these requirements, and the control signal for stopping refueling is transmitted by manually operating a switch, and the switch is provided without taking up space on the nozzle. This can be done while holding the valve, and the signal line is routed through the flow path.
To provide a refueling nozzle that does not get in the way when a switch and a liquid level sensor connected to the switch are installed in a limited place called the refueling nozzle, and also enables maintenance of the switch.

[Means to solve the problem]

In order to achieve the above object, the present invention provides a switch chamber in the nozzle body adjacent to the flow path in the body, houses a switch for stopping oil supply in the switch chamber,
The operator of the switch is projected outside the switch chamber, and the switch chamber has a first opening communicating with the inflow side passage of the nozzle main valve and a second opening communicating with the outflow side passage of the nozzle main valve. A first signal line connected to a liquid level sensor provided near the tip of the discharge nozzle is passed through the flow path from the flow path on the outflow side of the nozzle main valve to the first opening and introduced into the switch chamber. A second signal line connected to the control device is passed through the flow path from the inflow side flow path of the nozzle main valve to the second signal line.
A connector is provided to penetrate the opening of the signal line and enter the switch chamber to connect the first and second signal lines and the switch in the switch chamber, and the inlet of each signal line is sealed. It is.

[Effect]

According to the present invention, a switch chamber is provided in a position adjacent to the flow path in the nozzle body, and a switch for stopping refueling is provided in this chamber, so the switch can be quickly operated while holding the refueling nozzle, and it can be used in an emergency. Easy to operate when dealing with situations. Furthermore, since the signal line is passed through the flow path, it does not get in the way when the switch is installed in the limited location of the fuel nozzle.

〔Example〕

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

Fig. 1 is a longitudinal sectional front view of the refueling nozzle of the present invention attached to a fixed lubrication device, Fig. 2 is a longitudinal sectional front view of an embodiment of the refueling nozzle of the invention, and Fig. 3 is a partial cutaway of the main part. FIG.

First, to explain the overall structure of the refueling machine 1, a refueling pump 2, a flow meter 5, and a valve 6 are sequentially installed in the middle of a refueling pipe 3 that communicates with an underground tank (not shown).
A motor 4 is connected to the oil supply pump 2, and a flow meter 5 is connected to the oil supply pump 2.
is connected to a flow rate pulse generator 7, and the valve 6 is connected to a valve drive unit 8.

The flow rate pulse generator 7, valve drive section 8, and motor 4 are connected to a control device 9.

Further, the oil supply amount indicator 10 is connected to the control device 9.

The end of the refueling pipe 3 is connected to a refueling hose 11 disposed outside the refueling machine case 1a.

A refueling nozzle 12 equipped with a grip portion 13, a discharge nozzle 14, an on-off valve 15a as a main valve, and an operation lever 15 for opening and closing the valve is connected to the end of the refueling hose 11, and a switch 12b is connected to the refueling machine case 1a.
A nozzle hook 12a having a switch 12 is provided.
b to the control device 9.

The inner wall of the tip of the discharge nozzle 14 is equipped with a fuel filler insertion sensor 1 using, for example, a phototransistor.
7. Liquid level sensor 18 that detects the liquid level in the tank
will be established.

Further, a switch chamber 16 is provided at a location adjacent to the grip portion 13 of the nozzle body, for example, at a location adjacent to the on-off valve 15a serving as the main valve, near the joint with the discharge nozzle 14, and at a location adjacent to the flow path within the main body. establish.

The switch chamber 16 houses a switch 19 for stopping oil supply, and the chamber 16 opens in the opposite direction to the position of the lever 15. This opening is covered with a lid 16a and secured with screws.

The grip part 13 holds the tip of the operator 20 of the switch 19.
The switch is slightly protruded from the switch chamber 16 within the reach of the thumb while being held in the hand, and the other end is exposed to the operating piece 19a of the switch 19. In the figure, 20a is a return spring for the operator 20, 20c is a support member for the operator 20, and 20d is a stopper fixed to the operator 20.

In order to improve operability, it is preferable that the operator 20 be provided at a position of approximately 60 degrees with respect to the grip portion 13, and that a head 20b for preventing immersion be formed at the tip.

Further, the switch chamber is provided with a first opening that communicates with the inflow side passage of the on-off valve 15a, which is the nozzle main valve, and a second opening that communicates with the outflow side passage of the on-off valve 15a. A first signal line 21 whose ends are connected to the mouth insertion sensor 17 and the liquid level sensor 18 passes through the flow path of the discharge nozzle 14 and connects to the opening/closing valve 15.
The guide rod 3 of the check valve 30 in the flow path on the outflow side of a
1 and enter the switch chamber 1 from the first opening.
Lead to 6.

On the other hand, a second signal line 21' connected to the control device 9 is passed through the flow path in the refueling hose 11 and the nozzle 12, and passes through the second opening from the inflow side flow path of the on-off valve 15 as the main valve. into the switch chamber 16, and the first signal line 21 and the second signal line 2
1' and switch 19 are connected within the switch chamber.

In the figure, reference numeral 23 denotes a connector that connects the signal lines 21 and 21' and the switch 19 with these signal lines.

Note that 22a and 22b in the figure are signal lines 21 and 2.
This is a seal gasket for preventing liquid from entering the switch chamber 16 from the inlet 1'.

The electric circuit from the switch chamber 16 of the second signal line 21' to the control device 9 is formed of an intrinsically safe circuit.

Next, to explain the usage and operation, when refueling a car by normal refueling operation, first, when the refueling nozzle 12 is removed from the nozzle hook 12a, a refueling start signal is transmitted from the switch 12b to the control device 9, and the control device Refueling amount display meter 1 with the function of 9
0 is returned.

Next, when the discharge nozzle 14 of the nozzle 12 is inserted into the fuel filler port of the fuel tank of the automobile, the discharge nozzle 14
The tip of the fuel filler insertion sensor 17 will become dark.
detects this and sends the signal to the control device 9 via the signal line 21, which drives the motor 4 of the oil supply pump 2 and operates the valve drive section 8.
Valve 6 opens and gasoline is sucked up from the underground tank.

When the lever 15 is pulled, the valve 15a is pushed up and opened, a flow path is formed, and gasoline is discharged from the nozzle 14. The flow rate measured by the flow meter 5 is sent as a flow rate signal from the flow rate pulse transmitter 7 to the control device 9, where it is counted and the oil supply amount is displayed on the oil supply amount display meter 10.

When the fuel tank is almost filled with gasoline, the liquid level sensor 18 detects this and sends a signal to the control device 9, which operates the valve drive section 8, closes the valve 6, and stops discharging gasoline.

When the lever 15 is returned and the discharge nozzle 14 is pulled out from the fuel supply port, the tip of the discharge nozzle 14 becomes bright again, so the fuel supply port insertion sensor 17 detects this and sends the signal to the control device 9. As a result, the motor 4 and oil pump 2 stop. The nozzle valve 12 is returned to the nozzle hook 12a again to complete the oil supply.

Next, the operation of the switch provided on the refueling nozzle will be described below.

If the fuel filler insertion sensor 17 does not work because the inside of the fuel filler port is bright because the tank is shallow, such as on a motorcycle,
When the operator 20 of the switch 19 is pressed, a signal is transmitted to the control device 9, and the control device 9 determines that the sensor is disabled since the signal came before refueling, and the sensor 1
Without looking at the signal from 7, a signal is sent to the pump drive motor 4 and the drive unit 8 of the valve 6 to enable refueling, and the valve 1
Refueling can be performed by operating the lever 15 of 5a.

If an emergency such as a fire occurs during refueling, or if you wish to stop refueling before the tank is full, press the switch operator 20 with your thumb while holding the grip 13 while refueling to activate the actuator. 19a is pressed, switch 19 closes, and the signal is transferred to signal line 2.
1' to the control device 9, and the control device 9
Since the signal came during refueling, it was determined to be a refueling stop signal,
A valve closing signal is sent even if no signal is received from the liquid level sensor 18. As a result, the valve drive section 8 operates, the valve 6 closes, and the drive of the pump drive motor 4 is stopped.

In addition, if you want to continuously refuel the next car after refueling is completed, connect the refueling nozzle 12 to the nozzle hook 12.
If the switch 19 is closed before applying the signal to a, the signal is transmitted to the control device 9, and the control device 9 determines that it is continuous refueling since it is a signal after refueling, issues a continuous refueling signal, and the refueling amount indicator 10 returns to zero. This makes it possible to perform the next refueling, and the operation of hooking and unhooking the nozzle hook 12a can be omitted.

In addition, the signal of this switch is the liquid level sensor 18.
It can be used as various control signals such as a disable signal for the valve 6, a throttle signal for the valve 6, and, in the case of a suspended oil supply system, a signal for raising and lowering a hose.

In addition, since the tip of the operator 20 only slightly protrudes from the refueling nozzle 12, it will not be pressed accidentally when no operation is required, and since the head 20b will come into contact with the refueling nozzle 12 when pressed, the switch will not be activated due to excessive pressing. 19 damage can be prevented.

Further, although the refueling nozzle of the present invention is made for right-handed users, if the user is left-handed, a switch operator may be provided on the opposite side.

〔Effect of the invention〕

As described above, in the refueling nozzle of the present invention, the switch for stopping refueling is housed in the chamber adjacent to the grip, so the operator of the switch is located within the range that can be operated by the hand holding the grip. The switch can be operated while holding the refueling nozzle, and the refueling device can be quickly controlled, providing good operability for dealing with emergencies and performing detailed operations.

Moreover, since the signal line is passed through the flow path, it does not get in the way of installing the switch in the limited location of the refueling nozzle.Furthermore, the switch is housed in an independent chamber called the switch chamber. Maintenance is possible from outside.
Further, even if the liquid level sensor is out of order, the signal line connected to the liquid level sensor is connected to the switch via a connector inside the switch chamber, so the liquid level sensor can be easily replaced.

[Brief explanation of drawings]

Fig. 1 is a longitudinal sectional front view of a refueling machine equipped with the refueling nozzle of the present invention, Fig. 2 is a longitudinal sectional front view showing an embodiment of the refueling nozzle of the invention, and Fig. 3 is a partially cutaway plan view of the main parts. It is. 1...Refueling machine, 1a...Refueling machine case, 2...
Oil supply pump, 3...Oil supply pipe, 4...Motor, 5
...flow meter, 6 ... valve, 7 ... flow rate pulse transmitter, 8 ... valve drive section, 9 ... control device, 10 ...
Refueling amount indicator, 11... Refueling hose, 12... Refueling nozzle, 12a... Nozzle hook, 12b... Switch, 13... Grip, 14... Discharge nozzle,
15... Valve opening/closing operation lever, 15a... Valve, 1
6...Switch chamber, 16a...Lid, 17...Refueling port insertion sensor, 18...Liquid level sensor, 19...
...Switch, 19a... Actuation piece, 20... Operator, 20a... Spring, 20b... Head for preventing immersion, 20c... Support member, 20d... Stopper, 21, 21'... Signal line, 22a ,22b...
...Seal packing, 23...Connector, 30...
...Check valve, 31...Guide rod.

Claims (1)

[Claims] 1 A switch chamber is provided in the nozzle body adjacent to the flow path within the body, a switch for stopping oil supply is housed in the switch chamber, an operator of the switch is protruded outside the switch chamber, and a nozzle main valve is installed in the switch chamber. A first opening communicating with the inflow side flow path of the nozzle main valve and a second opening communicating with the outflow side flow path of the nozzle main valve, and a first opening connected to a liquid level sensor provided near the tip of the discharge nozzle. A signal line is introduced into the switch chamber from the outlet side flow path of the nozzle main valve through the first opening through the flow path, and a second signal line connected to the control device is introduced into the switch chamber.
A signal wire is introduced into the switch chamber from the inflow side flow path of the nozzle main valve through the second opening through the flow path, and the first and second signal wires and the switch are connected in the switch chamber. A refueling nozzle characterized by having a connector for connecting and sealing the inlet of each signal line.