JPH11321996A - Oil filler equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent oil from being continuously filled carelessly in such a small amount as an automatic valve closing mechanism does not operate and thus to prevent an oil overflow. SOLUTION: This oil filler equipment 1 is provided with an oil feeding mechanism 4 and a measuring mechanism 5 on an oil filler pipe 3 provided in a housing 2, with an oil filler hose 6 connected to the oil filler pipe 3 extending from the housing 2, an oil filler nozzle 7 provided at the tip end of the oil filler hose 6, and with an oil filling controller 11 which displays on an indicator 10 the amount of oil filled upon the receipt of a flow pulse outputted from the measuring mechanism 5. In this case, the oil filler nozzle 7 is provided with an automatic valve closing mechanism which closes a main valve by the energy of oil discharged when the opening of oil surface detecting pipe is closed by oil. The housing 2 is provided with an annunciator 9, and the oil filling controller 11 outputs a signal for announcement to the annunciator 9 when an oil flow is less than that of the work flow of the automatic valve closing mechanism. The annunciator 9 works upon the receipt of the signal.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an oil supply device provided with an oil supply nozzle having an automatic valve closing mechanism for closing a main valve with the energy of the discharged oil when an opening of an oil level detecting pipe is closed with oil. Things.

[0002]

2. Description of the Related Art An automatic valve closing mechanism is provided at a refueling nozzle of a refueling device so that refueling is automatically stopped when a vehicle fuel tank is almost full. This automatic valve closing mechanism operates using the energy of the discharged oil, and has a disadvantage that it does not operate when the flow rate is small. At a self-service refueling station that has recently been implemented, customers who are unfamiliar with refueling refuel themselves, refueling without noticing that the automatic valve closing mechanism does not operate at low flow rates, and refueling from the fuel tank. There is a risk of overflow.

[0003]

SUMMARY OF THE INVENTION Accordingly, the present invention prevents inadvertent refueling at a small flow rate at which the automatic valve closing mechanism does not operate, and supplies oil without noticing that the automatic valve closing mechanism does not operate. It is an object of the present invention to provide a refueling device capable of preventing an accident that overflows.

[0004]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides an oil supply pipe provided in a housing with an oil supply mechanism and a metering mechanism interposed therebetween. In a refueling device connected to a refueling hose, a refueling nozzle is provided at a tip of the refueling hose, and a refueling control device that receives a flow rate pulse output from a measuring mechanism and displays a refueling amount on a display unit is provided. When the opening of the oil level detection tube is closed with oil, an automatic valve closing mechanism for closing the main valve with the energy of the discharged oil is provided, an alarm is provided in the housing, and the oil supply control device is automatically closed. When the flow rate becomes smaller than the operation flow rate of the valve mechanism, an alarm signal is output to the alarm, and the alarm that has received the alarm signal operates. Since such a low flow rate is notified, the refueler carefully refuels and can prevent an oil overflow accident.

[0005]

Embodiments of the present invention will be described below. As shown in FIG. 1, an oil supply pipe 3 provided in a housing 2 of the oil supply device 1 is connected to an oil storage tank (not shown), and an oil supply mechanism 4 and a measurement mechanism 5 are interposed in the oil supply pipe 3. . That is, a pump 4b driven by a motor 4a and a flow meter 5 provided with a flow rate pulse transmitter 5a
b is interposed. An oil supply hose 6 is connected to the oil supply pipe 3 led out of the housing 2, and an oil supply nozzle 7 is provided at an end of the oil supply hose 6.

[0006] The housing 1 is provided with a nozzle hook 8, an alarm 9 and a refueling amount display 10. The nozzle hook 8 is provided with a nozzle switch 8a for detecting the removal of the fueling nozzle 7 and outputting an on / off signal. The refueling control device 11 connected to each device described above is connected to a POS 12 provided in an office (not shown) by a signal line 13.

[0007] As shown in FIG.
a and a signal from the nozzle switch 8a are input to the refueling control device 11, and signals are output from the refueling control device 11 to the motor 4a, the alarm 9 and the refueling amount display 10, and
The signal 2 is transmitted and received via the signal line 13.

The refueling control device 11 receives the ON signal output from the nozzle switch 8a when the refueling nozzle 7 is removed from the nozzle hook 8, and outputs a refueling signal to the refueling mechanism 4 so that the refueling nozzle 7 automatically operates. When the flow rate becomes smaller than the flow rate at which the valve can be closed, a notification signal is output to the alarm 9. And
When the refueling is completed and the refueling nozzle 7 is put on the nozzle hook 8, an off signal output from the nozzle switch 8 a is received, an oiling stop signal is output to the oiling mechanism 4, and an oiling end signal is output to the POS 12.

As shown in FIG. 3, the refueling nozzle 7 is a well-known one, the nozzle body 14 is connected to the refueling hose 6, a main valve 15 and an automatic valve closing mechanism 16 are provided in the nozzle body 14, and A discharge pipe 17 is provided. The main valve 15 is urged to close by a spring 18 and is opened by a lever 19. The automatic valve closing mechanism 16 includes a diaphragm 16b having a locking rod 16a and a diaphragm chamber 16 having one end.
c and the other end is opened at the tip of the discharge pipe 17 by an opening 16d.
The oil level detecting pipe 16 is opened in the middle to the negative pressure generating section 16e.
f and a check valve 16g for forming a contraction flow for generating a negative pressure
And a sliding rod 16i locked by a locking rod 16a and a locking ball 16h, and a fulcrum 19a of a lever 19 for opening and closing the main valve 15 is provided at a lower end of the sliding rod 16i.

In the oil supply nozzle 7 having such a structure, when the lever 19 is pulled, the main valve 15 is opened, and the oil from the oil supply hose 6 is discharged from the discharge pipe 17 through the main valve 15 and the check valve 16g. When the fuel tank of the car is almost full and the opening 16d of the oil level detection pipe 16f is closed by bubbles on the oil level, the negative pressure generated in the negative pressure generating section 16e flows to the diaphragm chamber 16c. As a result, the diaphragm 16b bends upward, and the locking rod 16a is pulled up to lock the ball 16h.
And the sliding rod 16i is lowered. When the sliding rod 16i descends, the fulcrum 19a of the lever 19 descends and the main valve 15 closes.

In order to operate the automatic valve closing mechanism 16 to close the main valve 15 as described above, it is necessary that a negative pressure of a certain level or more is generated in the negative pressure generating section 16e. The flow rate at which this negative pressure is obtained is a flow rate of about 15 liters or more per minute.

Next, the operation will be described with reference to the flowchart of FIG. When the oil supply nozzle 7 is removed from the nozzle hook 8 and an ON signal is input from the nozzle switch 8a to the oil supply control device 11 (ST1), the oil supply control device 11 outputs an oil supply signal to the oil supply mechanism 4 (ST2). That is, the refueling control device 11 activates the motor 4a to drive the pump 4b. And
When the refueling nozzle 7 is inserted into the refueling port of the car and the lever 19 of the refueling nozzle 7 is pulled to start refueling, the fuel is supplied via the refueling pipe 3, the pump 4b, the flow meter 5b, the refueling hose 6, and the refueling nozzle 7. You.

The flow rate pulses from the flow rate pulse transmitter 5a of the flow meter 5b are counted by the refueling control device 11, displayed on the refueling amount display 10, and output to the POS 12.

When the fuel tank of the car is almost full and the opening 16d of the oil level detecting tube 16f is closed by rising bubbles, the negative pressure generated in the negative pressure generating section 16e is transferred to the diaphragm chamber 16c. As a result, the diaphragm 16b bends upward, the locking rod 16a is lifted, the locking by the locking ball 16h is released, the sliding rod 16i is lowered, and the lever 19
Fulcrum 19a descends and the main valve 15 closes.

When the refueling is completed and the refueling nozzle 7 is put on the nozzle hook 8 and an OFF signal is input from the nozzle switch 8a (ST3), the refueling control device 11 outputs an oiling stop signal to the oiling mechanism 4. The refueling is stopped, and a refueling end signal is output to the POS 12 (ST4). Then, a refueling slip is issued from the POS 12, and settlement is performed using the refueling slip.

After the automatic valve closing mechanism 16 is operated, in order to perform additional refueling to completely fill the tank, the lever 19 is returned and the sliding rod 16i is moved to the locking rod 16a and the locking ball 16h.
And refuel by pulling the lever 19 again. This additional refueling is almost full, and is performed by slightly pulling the lever 19. If the flow rate is lower than the flow rate at which the automatic valve closing mechanism 16 can operate, for example, a small flow rate of 12 liters per minute (ST5), the refueling control device 11 outputs a notification signal to the alarm 9 (ST6). The annunciator 9 which has received the annunciation signal operates, for example, utters "The refueling nozzle does not stop automatically at this flow rate". When this information is heard and the lever 19 of the refueling nozzle 7 is pulled to refuel at a large flow rate (S
T7), steps ST3 and subsequent steps are executed again.

When a small amount of refueling is continued while receiving the notification, the refueling is completed, the refueling nozzle 7 is put on the nozzle hook 8, and an OFF signal is inputted from the nozzle switch 8a (ST).
8), the refueling control device 11 executes step ST4.

As described above, the informing device 9 informs that the automatic valve closing mechanism 16 does not operate, so that the refueling person carefully refuels and prevents the oil from overflowing from the fuel tank.

[0019]

As described above, according to the present invention, an oil supply mechanism and a metering mechanism are interposed in an oil supply pipe provided in a housing, and an oil supply hose is connected to an oil supply pipe led out of the housing. In a refueling device provided with a refueling nozzle at a tip of a hose and receiving a flow rate pulse output from a measuring mechanism and displaying a refueling amount on a display, an opening of an oil level detecting pipe is provided at the refueling nozzle. An automatic valve closing mechanism is provided for closing the main valve with the energy of the oil discharged when the oil is closed, an alarm is provided in the housing, and the oil supply control device is configured to supply a flow rate smaller than the operating flow rate of the automatic valve closing mechanism. Then, an alarm signal is output to the alarm device, and the alarm device that has received the alarm signal operates. Since such a low flow rate is notified, the refueler carefully refuels and can prevent an oil overflow accident.

[Brief description of the drawings]

FIG. 1 is a block diagram of a fueling device of the present invention.

FIG. 2 is a block diagram of control of the lubrication device of the present invention.

FIG. 3 is a sectional view of a fueling nozzle.

FIG. 4 is a flowchart of a refueling control device.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 oil supply device 2 housing 3 oil supply pipe 4 oil supply mechanism 4 a motor 4 b pump 5 metering mechanism 5 a flow pulse transmitter 5 b flow meter 6 oil supply hose 7 oil supply nozzle 8 nozzle hook 8 a nozzle switch 9 annunciator 10 oil supply amount display 11 oil supply control Device 12 Pos 13 Signal line 14 Nozzle body 15 Main valve 16 Automatic valve closing mechanism 16a Locking rod 16b Diaphragm 16c Diaphragm chamber 16d Opening 16e Negative pressure generating section 16f Oil level detecting tube 16g Check valve 16h Locking ball 16i Sliding rod 17 Discharge pipe 18 Spring 19 Lever

Claims (1)

[Claims] An oil supply mechanism and a metering mechanism are interposed in an oil supply pipe provided in a housing, an oil supply hose is connected to an oil supply pipe led out of the housing, and an oil supply nozzle is provided at a tip of the oil supply hose. In a refueling device provided with a refueling control device that receives a flow rate pulse output from a measuring mechanism and displays a refueling amount on a display, the refueling nozzle is discharged when an opening of an oil level detection pipe is closed with oil. An automatic valve closing mechanism that closes the main valve with the energy of the oil that is provided, an alarm is provided in the housing,
The refueling device according to claim 1, wherein the refueling control device outputs a notification signal to the alarm when the flow rate becomes smaller than the operation flow rate of the automatic valve closing mechanism, and the alarm that has received the notification signal operates.