JP2002120899A - Oil feeding device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an oil feeding device which can prevent a misoperation from occurring, and at the same time, wherein attachment of a vibration sensor becomes easy as well. SOLUTION: An oil feeding mechanism having an oil feeding pump 13 driven by a pump motor 12 operated by electricity from the outside is housed in a lower case 20. Then, an upper case 21 which houses a control device 30 for an oil feeding control and an oil feeding data display apparatus 26 is provided. In this case, the upper case 21 is attached to the top of the lower case 20 by a sealed structure through a strut 22. The control device 30 for the oil feeding control controls the driving of the pump motor 12. To the upper case 21, the vibration sensor 40 which detects vibrations through a substrate 47 being provided separately from the strut 22 is attached. Then, the control device 30 outputs a stop signal for the electricity supply to the pump motor 12, to a motor control switch 12a by a vibration signal received from the vibration sensor 40.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a refueling device having a function of interrupting the supply of electric power to a refueling mechanism and a control device when an impact is caused by an earthquake or a collision of an automobile.

[0002]

2. Description of the Related Art Conventionally, in a fueling device installed in a gas station, when an impact is applied due to an earthquake or a collision of a car, the supply of electric power is cut off for safety. For example, Japanese Unexamined Patent Publication No. Hei 8-258900 discloses a vibration-sensitive power supply cutoff device for a refueling device in which a vibration responsive switch and a relay unit are integrally housed in an explosion-proof box. Such a vibration-sensitive power supply cutoff device for a lubrication device,
An upper case containing a control device for refueling control and a refueling data display is provided between the columns above a lower case containing a refueling mechanism such as a refueling pump and a flow meter, and a vibration responsive switch is provided in the upper case. The explosion-proof box containing the is mounted directly on the column via a bracket.

[0003]

A conventional vibration responsive switch is housed in a pressure-resistant explosion-proof case, which is directly mounted on a support column via a bracket. In addition to being easily subject to vibration of a large vehicle or the like running on a road, it is difficult to distinguish from vibration caused by an impact caused by an earthquake or collision of a vehicle, which may cause malfunction.

[0004] The present invention has been made in view of the above circumstances,
An object of the present invention is to provide a lubricating device that can prevent malfunction and can easily attach a vibration sensor.

[0005]

According to the first aspect of the present invention, there is provided an oil supply mechanism having an oil supply pump driven by a pump motor operated by external electric power. A lower case for storing the refueling mechanism, and an upper case for storing a refueling control device and a refueling data display, which are mounted on the lower case via a support column in a sealed structure and control the driving of the pump motor. In the refueling device provided, the upper case includes:
A vibration sensor for detecting vibration via a substrate provided separately from the support is attached, and the control device controls a motor control switch to stop the power supply to the pump motor by a vibration signal received from the vibration sensor. Output to the Since the vibration sensor is attached to the upper case via a substrate provided separately from the column, malfunction can be prevented, and the attachment of the vibration sensor becomes easy.

According to a second aspect of the present invention, the control device outputs a stop signal of power supply to the control device itself to a relay unit based on a vibration signal received from the vibration sensor. It is assumed that. The power supplied to the control device itself can be stopped.

According to a third aspect of the present invention, in the vibration sensor, the conductive spherical body is suspended in a case by a wire connected to a first contact so as to swing. Is provided with a second contact point on the inner surface thereof, which contacts when the spherical body swings. A roll such as an earthquake can be detected.

According to the present invention, the control device determines that the on / off vibration signal received from the vibration sensor has continued for a predetermined time or more, and supplies power to the pump motor. Is output. By judging that the ON / OFF vibration signal of the vibration sensor continues for a predetermined time or more, it becomes possible to distinguish an earthquake or a car collision from other vibrations.

[0009] In the invention according to claim 5, when the power supply to the pump motor is stopped, the refueling data display indicates that the refueling has been stopped. It is. The display of the refueling data display indicates that the power supply has stopped due to an earthquake or the like.

In the vibration sensor according to the sixth aspect, the vibration sensor may include a movable electrode whose upper side is elastically deformable, a fixed electrode positioned below the movable electrode and opposed to the movable electrode, and an upper part of the movable electrode. And a spherical moving body that moves in the vertical direction due to longitudinal vibration while the movable electrode is in elastic contact with the fixed electrode and is accommodated in a case. Vertical vibrations such as earthquakes can be detected.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to an embodiment shown in the drawings. 1 to 5 are views for explaining a fueling device according to a first embodiment of the present invention. FIG. 1 is a block diagram illustrating a configuration of the fueling device, FIG. 2 is a front view of the fueling device, and FIG. FIG. 4 is a block diagram illustrating a configuration of a power cutoff device, and FIG. 5 is a cross-sectional view of the vibration sensor.

In these figures, a lubricating apparatus 10 according to a first embodiment of the present invention is, for example, a ground-mounted apparatus for supplying any one of regular gasoline, high-octane gasoline, and light oil, and a main body case 11 thereof. , A refueling pump 13 driven by a pump motor 12 constituting a refueling mechanism of each oil type, and a flow meter 15 having a flow rate pulse transmitter 14 are sequentially connected to a refueling pipe communicating with an underground tank. An oil supply hose 18 having an oil supply nozzle 17 at the tip is connected to 15 via a pipe 16 communicating with the outlet. The main body case 11 includes a lower case 20 that accommodates an oil supply mechanism disposed above the base plate 37, an upper case 21 disposed above the lower case 20, and columns 22 a and 22 b provided on the left and right sides of the lower case 20 and the upper case 21. It comprises a top case 23 and the like which suspends the oil supply hose 18 provided between the upper ends of the columns 22a and 22b. Upper case 21 and top case 23
A space is formed between them, and a lighting case 24 for illuminating the lower side is provided at the bottom of the top case 23. The refueling nozzle 18 is adapted to be hung on a nozzle hanger 19 provided on the front side of the lower case 20.
In the vicinity of the nozzle hook 19, a nozzle switch 38 is provided.
Is provided.

On the front side of the upper case 21, a refueling data display 26 is provided at the center, a data input / output device 25 is provided at the right side, and a video screen 27 is provided at the left side. The refueling data display 26 includes an amount display section 26a for displaying a refueling fee.
And a refueling amount display portion 26b provided at the lower portion for displaying a refueling amount, and a unit price display portion 26c provided at a lower portion for displaying a unit price. The data input / output device 25 is a card reader 25a for reading various cards.
And a keyboard 25b for data input and a keyboard 2
Data display unit 25c for displaying data input in 5b or the like
And a printer 25d for issuing a slip or the like. The video screen 27 displays campaign information, traffic information or advertising information during refueling.

The main body case 11 is provided with a control device 30 for controlling each part.
The motor control switch 12a provided on the pump motor 12 is turned on by the refueling request signal from the
2, the power of the power line 32 is supplied, the flow rate pulse signal output from the flow rate pulse transmitter 14 is integrated by refueling, the result is displayed on the refueling data display 26 as the refueling amount, and the refueling stop signal from the nozzle switch 38 is used. Turn off the motor control switch 12a to cut off the power to the pump motor 12, further transmit and receive data to and from the data input / output device 25,
Also, it operates to control the display of the video screen 27. In addition, the control device 30 receives an on / off vibration signal from the vibration sensor 40 described in detail below, and determines that an earthquake has occurred when the on / off operation has continued for a predetermined time, for example, 4 seconds or more. A power supply stop signal is output to the motor control switch 12a and the relay unit 34. Further, the control device 30 is provided with a battery or the like so that when the supply of power is stopped, the refueling data display 26 can display an indication that the refueling has stopped.

Further, the main body case 11 has a power cutoff device 2 as a function of detecting shaking such as an earthquake and shutting off the power.
8 are provided. In this power cutoff device 28,
A power supply line 31 that supplies drive power to the control device 30 is provided with a relay unit 34 and a main power switch 33, and the control device 30 determines an on / off vibration signal detected by the vibration sensor 40, A power supply stop signal of the power supply line 32 is output to the motor control switch 12a, and at the same time, a power supply stop signal of the power supply line 31 is output to the relay unit. The relay unit 34 has a circuit configuration in which when the power supply stop signal is received from the control device 30, the power supply line 31 is maintained in a cutoff state, and the pushbutton 36 of the return switch 35 is pressed to release the cutoff state. .

The vibration sensor 40 is provided with a spherical body 45 having conductivity by a metal wire 44 from a first contact 43 at the upper center in a space 42 in a case 41 formed in a sealed and cylindrical shape.
Is suspended, and the spherical body 40 is swung and a second contact 46 is provided on a circumferential portion that comes into contact with the inner surface side of the case 41. As shown in FIG. 3, the vibration sensor 40 includes, for example, a substrate 4
7, and the substrate 47 is attached to the upper case 21.
The case 41 is mounted such that the axis of the case 41 is vertical. The upper case 21 has side plates 21b, 21b formed on the left and right sides of an upper case body 21a formed in a frame shape and having an opening for mounting a data input / output device 25, a refueling data display 26, or a video screen 27 on the front side. A bottom plate 21c is provided on the bottom surface of the lower part, is formed in a closed structure as a whole, and is attached between the columns 22a and 22b.

In the lubricating apparatus 10 having the above-described structure, when the main power switch 33 is turned on and normal lubrication is possible,
When an impact is applied to the main body case 11 due to an earthquake or a car collision, the vibration sensor 40 detects that the spherical body 45 suspended by the wire 44 in the case 41 starts to roll, and the second contact provided on the side surface side By repeating contact and separation with the first contact 43 and the second contact 46
Repeats the on / off state as a vibration signal. The vibration signal of the vibration sensor 40 is received by the control device 30, and when the on / off operation continues for a certain period of time, the control device 30 outputs a power supply stop signal to the motor control switch 12a provided to the pump motor 12, and Output to the relay unit 34. By this power supply stop signal,
The motor control switch 12a and the relay unit 34 are turned off, the supply of power from the power supply lines 32 and 31 is stopped, the driving of the pump motor 12 is stopped, and the supply of power to the control device 30 is stopped. When the supply of power is stopped, the refueling data display 26 uses a battery or the like provided in the control device 30 as a power source to display a message indicating that refueling has been stopped. It is possible to know that the power supply has stopped. Vibration sensor 40
Is mounted on a substrate 47, and the substrate 47 has a closed structure and is provided between the left and right columns 22a and 22b.
1, the device does not receive the vibration of the fueling nozzle 17 or the vibration of a large car running on the road, and thus malfunctions. Can be prevented, and the degree of freedom in mounting the vibration sensor 40 can be increased. In addition, since the control device 30 determines that the vibration signal from the vibration sensor 40 has continued for a certain period of time and outputs a stop signal, the vibration of the fuel supply nozzle 17 being detached or the vibration of a large car traveling on a road or the like is generated. When,
Vibration resulting from an impact caused by an earthquake or a car collision can be distinguished, and further malfunction can be prevented. The relay unit 34 of the present embodiment is maintained in the off state by the stop signal from the control device 30. When the relay unit 34 is restarted, the power supply is turned off by the main power switch 33 and the inspection is performed. After confirming the above, the original state can be restored by pressing the push button 36 of the return switch 35.

FIG. 6 is a sectional view of a vibration sensor of a fueling device according to a second embodiment of the present invention.

The vibration sensor 50 is formed of a conductive spring plate on the lower side of a space 52 in a closed and cylindrical case 51 and has a movable electrode 55 located on the upper side.
And the fixed electrode 56 located on the lower side so that the movable electrode 55 is in a vertical relationship with the movable electrode 55, and is fixed to the lower portion of the case 51 by a cantilever so that the tip of the movable electrode 55 is bent and contacts the fixed electrode 56. At the same time, the movable electrode 56 is
When the movable spherical member 53 is movable on the inner surface of the case 51, the movable spherical member 53 is mounted on the movable electrode 56. Is formed with a tapered portion 54 having an inclination angle that can be separated from the fixed electrode 56 by its elasticity. Other configurations as the refueling device are the first
This is the same as the embodiment.

In the vibration sensor 50 having the above configuration, the case 5
When the spherical moving body 53 in 1 is subjected to longitudinal vibration such as an earthquake, it jumps up. Therefore, the tip of the movable electrode 56 moves upward due to its own elasticity, separates from the fixed electrode 56, and turns off. , And the state where the tip of the movable electrode 56 contacts the fixed electrode 56 and turns on is repeated. Therefore, by using the vibration sensor 50 of the present embodiment in a lubricating device, longitudinal vibration can be detected, and similarly to the first embodiment, the control device 30 outputs a vibration signal from the vibration sensor 50 for a certain period of time. By judging the continuation and outputting a stop signal, it is possible to discriminate vibrations caused by the refueling nozzle 17 or the vibration of a large car traveling on a road from vibrations caused by an earthquake or an impact caused by a car collision. And the malfunction can be prevented.

In the above embodiment, the power supply to the pump motor 12 and the control device 30 is stopped. However, at least the power supply to the pump motor 12 may be stopped, and the power supply to the control device 30 is stopped. You can also prevent it from stopping. Thus, it is possible to display on the refueling data display 26 that refueling has stopped without providing a power source such as a battery in the control device 30 itself. Further, the determination of the vibration signal from the vibration sensors 40 and 50 by the control device 30 can be appropriately determined according to the nature of the vibration.

[0022]

As described above, in the lubricating apparatus according to the present invention, the lubricating mechanism having the lubricating pump driven by the pump motor operated by external electric power is housed in the lower case, and is sealed above the lower case. A control unit for refueling control and a refueling data display, which is mounted via a column and controls the driving of the pump motor, is provided with an upper case, and the upper case is provided with a substrate provided separately from the column. The control device outputs a stop signal of the power supply to the pump motor to the motor control switch based on the vibration signal received from the vibration sensor, so that the vibration sensor is provided separately from the column. Since it is attached to the upper case via the board that has been set, malfunction can be prevented, and attachment of the vibration sensor becomes easy.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating a configuration of a fueling device according to a first embodiment of the present invention.

FIG. 2 is a front view of the fueling device according to the first embodiment of the present invention.

FIG. 3 is a diagram illustrating a state in which a vibration sensor is attached to an upper case of the oil supply device according to the first embodiment of the present invention.

FIG. 4 is a block diagram illustrating a configuration of a power cutoff device according to the first embodiment of the present invention.

FIG. 5 is a cross-sectional view of the vibration sensor according to the first embodiment of the present invention.

FIG. 6 is a cross-sectional view of a vibration sensor of a fueling device according to a second embodiment of the present invention.

[Explanation of symbols]

 REFERENCE SIGNS LIST 10 lubricating device 11 main body case 12 pump motor 12 a motor control switch 13 lubricating pump 14 flow pulse transmitter 15 flow meter 16 piping 17 lubricating nozzle 18 lubricating hose 19 nozzle hook 20 lower case 21 upper case 21 a upper case main body 21 b side plate 21 c bottom plate 22 a , 22b Prop 23 Top case 24 Lighting case 25 Data input / output device 25a Card reader 25b Keyboard key 25c Data display 25d Printer 26 Refueling data display 26a Amount display 26b Refueling amount display 26c Unit price display 27 Video screen 28 Power off Device 30 Control device 31 Power line 32 Power line 33 Source power switch 34 Relay unit 35 Return switch 36 Operation button 37 Base plate 38 Nozzle switch 40 Vibration sensor Sensor 41 Case 42 Space 43 First contact 44 Metal wire 45 Spherical body 46 Second contact 47 Substrate 50 Vibration sensor 51 Case 52 Space 53 Spherical moving body 54 Tapered portion 55 Movable electrode 56 Fixed electrode

Claims (6)

[Claims] An oil supply mechanism having an oil supply pump driven by a pump motor operated by external electric power;
A lower case for storing the refueling mechanism, an upper case for storing a refueling control device and a refueling data display device, which are mounted on the lower case via a support column in a sealed structure and control the driving of the pump motor. In the refueling device, a vibration sensor for detecting vibration is attached to the upper case via a substrate provided separately from the support, and the control device is configured to control the pump based on a vibration signal received from the vibration sensor. A refueling device for outputting a stop signal of power supply to a motor to a motor control switch. 2. The refueling device according to claim 1, wherein the control device outputs a stop signal of power supply to the control device itself to a relay unit based on a vibration signal received from the vibration sensor. 3. The vibration sensor, wherein a conductive spherical body is suspended in a case so as to be swingable by a wire connected to a first contact, and the spherical body swings on an inner surface of the case. The lubricating device according to claim 1, further comprising a second contact that comes into contact with the lubrication device. 4. The control device according to claim 1, wherein the control device determines that the on / off vibration signal received from the vibration sensor has continued for a predetermined time or more, and outputs a power supply stop signal to the pump motor. The refueling device according to claim 1, wherein 5. The refueling device according to claim 1, wherein when the power supply to the pump motor is stopped, the refueling data display indicates that the refueling has been stopped. 6. The vibration sensor has a movable electrode whose upper side is elastically deformable, a fixed electrode located below and facing the movable electrode, and a fixed electrode which is located above the movable electrode and fixes the movable electrode. 2. The refueling device according to claim 1, wherein a spherical moving body which is brought into elastic contact with the electrode and moves in a vertical direction by longitudinal vibration is housed in a case.