KR0174728B1 - Oil feeder with seismoscopic function - Google Patents

Abstract

An object of the present invention is to stop a liquid feeding pump instantaneously when a longitudinal shake is detected by an earthquake or the like.

In order to achieve the above object, the present invention provides a pump motor 2 operated by electric power from the outside, a liquid feeding pump 1 driven by the pump motor 2, and a flow meter for measuring the oil supply amount. (4) and a power shut-off device having a vertical vibration detector 25 having a vibration oscillation switch which is opened and closed by the vertical vibration, and the power shut-off device when the longitudinal vibration is received by receiving the box 14 of the oil supply device. (20), the supply of power to the pump motor 2 is stopped.

Description

Lubrication device with damping function

1 is a view showing an embodiment of an oil supply apparatus using the power cutoff device of the present invention.

FIG. 2 is a diagram showing the internal structure of the power shutoff device of FIG.

3 is a cross-sectional view showing an embodiment of a vertical vibration detector for use in the power shutoff device of FIG.

4 is a cross-sectional view showing an embodiment of the power interruption device of FIG.

5 is a cross-sectional view showing another embodiment of the vertical vibration detector.

6 is a cross-sectional view showing an example of a conventional vibration detector.

* Explanation of symbols for main parts of the drawings

2: motor 11: power line

12: control switch 13: power line

20: power cutoff device 25: vertical vibration detector

28: relay unit 29: return switch

40: magnetic memory relay 41: power relay

W: Main power switch

[Industrial use]

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 pre-lubrication mechanism or a control device that has been impacted by an earthquake or an automobile stony.

[Prior art]

In a gas station, a vibration-sensitive switch and a magnetic circuit are operated by vibrating as shown in Japanese Unexamined Patent Publication No. 60-193894, in case an impact is applied to an oil supply device due to an earthquake or a collision of a car. Lubrication devices have been proposed in which a relay is formed in series and connected in parallel to a power supply line, and has a damping function for interrupting supply of electric power to an oil supply mechanism or a control device by operating a vibration sensitive switch.

As shown in FIG. 6, such a vibration sensitive switch accommodates mercury B in a container A in which the center of the bottom part is formed in a conical shape, and normally the upper and lower electrodes C and D through the mercury B (D). Is formed to form a conductive relationship, and when the mercury (B) moves left and right by vibration, mercury (B) is separated from the electrodes (C) and (D) to detect vibration by disconnection between the electrodes. I can do it.

For this reason, mercury (B) tends to fall from the electrodes (C) and (D) for horizontal vibrations, but exhibits high sensitivity, but mercury extends upwards for vertical vibrations as indicated by the dotted line in the in-phase drawing. It is not certain whether the conduction relationship between the electrodes C and D will be disconnected because it moves while deforming as much as possible, so that it cannot be guaranteed that the liquid supply function can be reliably stopped for a direct type earthquake that initially causes vertical shaking. There is a problem.

[Problem to Solve Invention]

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and its object is to provide a lubrication device having a damping function capable of reliably detecting longitudinal vibration and stopping the liquid feeding in a moment in response to a direct type earthquake. .

[Means for solving the problem]

In order to solve such a problem, in the present invention, a pump motor operated by electric power from the outside, a liquid feed pump driven by the pump motor, and a flow meter for measuring oil supply amount are housed in a box. And a vertical vibration detecting means having a vibration oscillation switch which is opened and closed by vertical vibration in the box body, and providing a relay unit which stops supply of power to the pump motor by a signal from the vertical vibration detecting means. ,

The longitudinal vibration detecting means is elastically deformable movable electrode on the upper side, a fixed electrode facing and positioned below the movable electrode, and positioned above the movable electrode to elastically contact the movable electrode with the fixed electrode, In addition, it is configured to accommodate the spherical mobile body moving in the vertical direction by the vertical vibration in the case, thereby detecting vertical vibrations such as the direct type earthquake in an instant to cut the power supply to the pump motor.

EXAMPLE

EMBODIMENT OF THE INVENTION Below, it demonstrates based on the Example which showed the detail of this invention.

FIG. 1 shows an embodiment of the present invention. In the drawing, reference numeral 1 denotes a liquid feeding pump driven by a pump motor 2, and the fuel oil of an underground tank (not shown) is shown through a standing pipe 3. The liquid is fed to the nozzle 6.

Reference numeral 4 denotes a flow meter, the inlet port of the liquid feed pump 1 is connected to the inlet port, and the oil supply nozzle 6 is connected to the outlet port via a hose 5, and the amount of oil lubricated from the nozzle 6 to the vehicle fuel tank is flown. The pulse signal is output from the flow rate pulse generator 7 as a pulse signal.

Reference numeral 8 denotes a control device, which outputs a signal to the motor control switch 10 in response to an oil supply request signal from the nozzle switch 9, and supplies the power of the power line 11 to the pump motor 2, In addition, the flow rate pulse signal output by the oil supply is accumulated and displayed on the display 12 as the oil supply amount, and the motor control switch 10 is turned off by the oil supply stop signal from the nozzle switch 9, and the pump motor (2) It operates to cut off the supply of power to the.

Reference numeral 20 denotes a power cut-off device for detecting vertical shaking to cut off the power, and is housed in the box 14 of the oil feeder main body, and in this embodiment, a control for outputting an on signal to the motor control switch 10. It is connected to a power supply line 13 which provides driving power to the device 8.

FIG. 2 shows an embodiment of the above-described power cutoff device, and the vertical vibration detector 25 described later in the pressure-resistant explosion-proof case 24 that can be fixed to the box 14 of the oil supply device body with screws 23 and 23. FIG. And the connectors 26 and 27, the relay unit 28 and the return switch 29 to be described later, and the power supply line 13 is led through the packings 30 and 30.

3 shows an embodiment of the above-described vertical vibration detector 25, wherein the vibration vibration switch is constituted by a conductive spring plate, and moves up and down with respect to the movable electrode 31 and the movable electrode 31 positioned on the upper side. The rear end is supported on one side of the case 33, that is, fixed in a cantilever shape so that the fixed electrode 32 positioned on the lower side so as to be in a relationship with the movable electrode 31 is bent to contact the fixed electrode 32. At the same time, the movable electrode 31 is in constant contact with the fixed electrode 32, and the spherical movable body 34 which is movable in the vertical direction thereof, in this embodiment, a steel ball is formed on the lower part of the case 33. It is comprised by receiving in the space 36 of the case 33 so that it may be guided to the part 35, and it will become a predetermined position.

The above-mentioned taper portion 35 formed on the bottom surface of the case 33 is an inclined surface having a wider upper side, and the movable electrode 31 is fixed to the movable electrode 31 by bringing the spherical movable body 34 into contact with a predetermined position of the movable electrode 31. In the case of constant contact with (32), the movable electrode (31) is fixed by its elasticity as shown by the dotted line in the figure when the spherical movable body (34) passes over the tapered portion (35) when it is subjected to the transverse vibration. The taper angle is provided so that it may be spaced apart from the electrode 32. In the figure, reference numeral 37 denotes a lid of the case 33.

4 shows an embodiment of a power interruption device using the vertical vibration detector 25 described above, wherein reference numeral 40 in the drawing denotes a magnetic memory relay which forms a main part of the relay unit 28. Set coil (S), reset coil (R), the first and second contacts (SR1), (SR2) that can hold the previous state magnetically, this contact (SR1), (SR2) Is switched from on to off when at least the set coil S is excited, and is turned off when only the reset coil R is excited, and is turned off by the set coil S when the force is removed again. It is configured to magnetically remember the state of on.

The set coil S is connected in parallel to the power supply line 13 while being connected in series with the vibration contact switch of the first contact SR1 and the vertical vibration detector 25, and the reset coil R. Is connected to the power supply line 13 in parallel. The normally open return switch 29 is connected in parallel to the first contact SR1, and the second contact SR2 is connected in parallel to the power supply line 13 through the excitation coil A of the power relay 41. Connected. The control device 8 is connected to the power supply line 13 via the contacts A1 and A2 of the power relay 41, so that the operating power is supplied.

In this embodiment, when the refueling device is installed, the main coil main power switch W is turned on, and the return coil 29 is turned on by the operation button 22 so that the set coil S is the vertical vibration detector 25. Regardless of the excitation of the reset coil (R), which is energized by the supply of power from the power supply line (13) through the oscillation oscillation switch and the return switch (29) of the It is preferentially turned on together with the first and second contacts SR1 and SR2.

As a result, the reset coil S is supplied with electric power through the vibration oscillation switch of the longitudinal vibration detector 25 and the first contact SR1, so that the reset coil S is turned on regardless of whether the return switch 29 is turned on or off. In the so-called self-protection state.

At the same time, since the power relay 41 is excited by the ON of the second point SR2, the operating power is supplied to the control device 8 through its contacts A1 and A2, so that the oil can be supplied.

In this state, when the longitudinal vibration is received by an earthquake or the like, the spherical movable body 34 of the longitudinal vibration detector 25 is popped up, so that the front end of the movable electrode 31 moves upward by its elasticity, and from the fixed electrode 32 The vibration vibration switch of the vertical vibration detector 25 is turned off. As a result, the set coil S is disabled, the excitation force of the reset coil R becomes dominant, and the first and second contacts SR1 and SR2 are turned off to maintain the off state.

At the same time, since the power relay 41 is also turned off by turning off the second contact SR2, the supply of power to the control device 8 is cut off, and the motor control switch 10 is turned off to stop the liquid feeding.

For checking, the main power switch W is turned off and the main power switch W is turned on while checking that no abnormality is found.

In this state, since both the first and second contacts SR1 and SR2 are turned off, only the reset coil R is excited, so that the contacts SR1 and SR2 naturally remain off.

Therefore, even if the power is turned on when not ready, or the power supply is resumed due to the power failure caused by the earthquake, the control device 8 can be stopped without power being supplied.

When the return switch 29 is pressed while the power is turned on, the set coil is excited as described above, so that the contacts SR1 and SR2 are turned on regardless of the reset state of the reset coil R. As a result, the contacts A1 and A2 of the power relay 41 are turned on, so that the operating power is supplied to the control device 8 so that oil supply is possible.

When the main power switch W is turned off after one day of operation, the set coil S and the reset coil R are disabled at the same time, so the contacts SR1 and SR2 are in a state before the power is cut off. That is, it keeps on state magnetically.

When the main power switch W is re-inserted prior to the operation, the set coil S is excited simultaneously with the reset coil R through the first contact SR1 which has stored the on-state, so that the contact point SR1 ( SR2) remains on without changing the state. Therefore, the power relay 41 is turned on through the second contact SR2 without requiring the operation of the return switch 29, so that oil can be supplied.

In addition, when an automobile or the like collides with a box and is shaken horizontally, the movable electrode 31 is fixed electrode because the spherical movable body 34 moves upwardly inclined over the tapered part 35 of the case 33. The power is cut off from (32).

In addition, in the above-described embodiment, the motor control switch 10 is turned off by turning off the driving power to the control device 8 by the operation of the vertical vibration detector 25, but the power cut-off device 20 It is apparent that the same shape of operation can be obtained even if the power is placed between the power lines 11 so as to cut off the power to the motor 2 directly.

FIG. 5 shows a second embodiment of the longitudinal vibration detector. Two piezoelectric vibrating plates 51 and 52 formed in a plate shape are joined together in an up and down direction so that their polarization directions face each other, and the tip is bent up and down to vibrate. A bimorph piezoelectric vibrator whose rear end is fixed to the case 53 in a cantilever shape is formed, and the electrode body of each piezoelectric vibrating plate 51 and 52 is housed with the vibrator body in the case 53. It is driven by exposing the 54 and 55 to the outside.

According to this embodiment, when the longitudinal vibration is applied, the two piezoelectric vibrating plates 51 and 52, which are joined together, generate a vibration in which the free end of the tip is repeatedly bent up and down to generate electromotive force from the piezoelectric vibrators 51 and 52. Therefore, by pinching the signal through a level converting means such as an inverter, a high level signal is normally output, and when a vertical vibration is detected, that is, when an electromotive force is generated, a low level signal is output. One power relay 41 can be turned off.

In addition, in the above-described embodiment, only the bimorph piezoelectric vibrator bent up and down is used, but the second bimorph piezoelectric piezoelectric arrangement in which the plurality of piezoelectric diaphragms are stacked in a horizontal direction is arranged. By adding a vibrator, the electric power can be cut off in response to vertical and horizontal vibrations.

[Effects of the Invention]

As described above, in the present invention, the pump motor which operates by electric power from the outside, the liquid feed pump driven by the pump motor, and the flow meter for measuring the oil supply amount are accommodated in the box and the longitudinal vibration is carried out in the box body. Since a vertical vibration detecting means having a vibration oscillation switch opened and closed by means of a switch is provided and a relay unit is provided to stop the supply of power to the pump motor by a signal from the vertical vibration detecting means. Even in the shaking of the pump, the power supply to the pump motor can be disconnected in an instant to stop the feeding.

Claims (4)

A pump motor operated by electric power from the outside, a liquid feed pump driven by the pump motor, and a flow meter for measuring oil supply amount are housed in a box, and the box body is opened and closed by longitudinal vibration. A longitudinal vibration detection means having a vibration oscillation switch is provided to provide a relay unit which stops the supply of power to the pump motor by a signal from the longitudinal vibration detection means, and the longitudinal vibration detection means is elastic at the upper side. A deformable movable electrode, a fixed fixed electrode positioned below the movable electrode and opposed to the movable electrode, and positioned above the movable electrode to elastically contact the movable electrode with the fixed electrode, and move vertically by vertical vibration. A refueling device having a damping function, characterized in that it is configured to accommodate a spherical movable body in a case. 2. The oil supply apparatus according to claim 1, wherein an inclined surface having an upper portion is formed near the movable electrode of the case so that the spherical movable body moves upward along the inclined surface with respect to the horizontal vibration. . The method according to claim 1, wherein the longitudinal vibration detecting means is arranged such that a bimorph piezoelectric vibrator formed by attaching a plurality of piezoelectric vibrating plates so that the stacking direction of the piezoelectric vibrating plate is vertically and horizontally arranged. Lubrication device with damping function. 2. The relay according to claim 1, wherein the relay unit is turned on when the set coil, the reset coil and at least the set coil is excited, and is turned off when only the reset coil is excited, and again the set coil and the reset coil. At the same time, the power having a magnetic memory relay having a first and a second magnetic memory contact that magnetically retains the ON state by the set coil when disabled, and a contact that cuts off the power. A series circuit comprising a relay unit and a series circuit connected to the set coil, the first magnetic memory contact and the vibration-actuating switch in series, and the reset coil and the second magnetic memory contact and the operation of the power relay. Each of the in-line circuit and the coil is connected in parallel to the power supply line, and a return switch is connected in parallel to the first magnetic memory contact, and then transferred to the driven means through the contact of the power relay. Fuel supply apparatus having a function gamjin characterized in that the supply.