KR920003891Y1 - Fuel supplier - Google Patents

Abstract

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Description

Lubrication device

1 is a front view showing the configuration of the oil supply apparatus having a fuel supply nozzle according to an embodiment of the present invention.

2 is a longitudinal sectional view showing the configuration of the oil supply nozzle according to the present embodiment.

3 is a cross-sectional view showing the configuration of the oil supply nozzle according to the present embodiment.

4 is a perspective view of a part of the support plate, rod-shaped roller, photocoupler and slit according to the present embodiment.

5 is a block diagram showing the configuration of the present embodiment.

6 is a general time chart when additional oil supply is performed when filling a full tank.

7 is a longitudinal sectional view showing the operation of the oil supply nozzle of this embodiment.

8 is a longitudinal sectional view showing the operation of the oil supply nozzle of this embodiment.

* Explanation of symbols for main parts of the drawings

1: Oil supply unit body 7A: Flow pulse generator

10: oil supply nozzle 11: nozzle hanger (nozzle storage unit)

12: nozzle switch (nozzle detection means) 22: oil passage

23: discharge pipe 24: valve seat (valve)

35: valve body (valve) 26: main valve body (valve mechanism)

33: valve shaft (valve) 53: operation lever

57: automatic valve closing mechanism 58: diaphragm

59: cap 59a: guide part

65: spring bearing 65a: protrusion

66: valve displacement sensor (valve displacement detection means)

79: liquid level sensor (level detection means)

90: filling tank control means 91A: filling tank completion indicator

91B: Lubrication period indicator

91C: Additional oiling period indicator (means of additional oiling period)

101: valve closed forgetting notice (notification means)

The present invention relates to an oil supply device, and more particularly, to an oil supply device for supplying an automatic filling tank.

Conventionally, a fuel supply device having an automatic filling tank oil supply function for automatically stopping oil supply when a tank being filled becomes a full tank has been developed for practical use.

The oil supply device is provided with a negative pressure chamber communicating with an air passage tube at the tip of the nozzle and sucking air inside as gasoline flows through the oil passage formed inside the nozzle, and at the bottom of the negative pressure chamber, the negative pressure causes displacement. The diaphragm is installed. Then, the valve closes the full tank, and the air communication port of the end portion of the air communication tube is closed, so that the negative pressure chamber cannot be compensated for the negative pressure, so that the diaphragm is displaced so that the roller pin installed on the lower side of the diaphragm opens and closes the oil passage. It is configured to automatically change the valve opening degree of the valve away from the shaft regardless of the operation of the operation lever.

In addition, a valve displacement detection sensor for detecting that the valve opening degree has been changed by detecting the displacement of the diaphragm is provided, and a liquid level sensor is provided near the tip of the nozzle, so that both the liquid level sensor and the valve displacement sensor are accurately detected. At the same time, the tank was filled and the additional oil was supplied.

That is, the negative pressure chamber returns the diaphragm from the displacement position to the position before the displacement when the operation lever is operated by closing the valve after the end of the filling tank oil supply between the diaphragm and the wall surface of the negative pressure chamber facing the diaphragm, and the roller pin is moved to the position before the displacement. It was provided with a spring for returning to the groove. (See Japanese Patent Office 63-36271).

However, in the above-mentioned oil supply system, the diaphragm valves the axis when the diaphragm is displaced when the diaphragm is displaced due to the negative pressure during oil supply, or when the diaphragm that has already been displaced returns to the valve closing position after returning the operation lever after the filling tank type. In this case, the displacement of the valve displacement sensor, which detects the displacement of the valve by detecting the displacement of the diaphragm, causes chattering and other malfunctions. As a result, the displacement of the detection signal of the valve displacement sensor There was a problem that it adversely affects the control system of the lubrication device depending on the output.

The present invention has been made to solve the above problems effectively, and an object of the present invention is to provide a lubrication device capable of reducing fluctuations in the direction orthogonal to the valve shaft of the diaphragm and having less malfunction.

In order to achieve the above object, the oil supply device of the present invention comprises a negative pressure chamber which communicates through an atmospheric communication pipe at the nozzle tip and sucks the air therein when oil flows into the oil passage of the nozzle, and divides the negative pressure chamber into the negative pressure chamber. The valve has a diaphragm which is displaced when the pressure is negative, and valve displacement means for changing the valve opening degree of the valve for opening and closing the oil passage in conjunction with the displacement of the diaphragm, and detecting the displacement of the valve by detecting the displacement of the diaphragm. An oil supply apparatus having a valve displacement detecting means, comprising: providing a projection that protrudes in the displacement direction on the diaphragm, and providing a guide portion for guiding the projection in a predetermined direction in the negative pressure chamber facing the diaphragm. It is characterized by.

According to the oil supply device of the present invention, even if the diaphragm is to be swung in the direction perpendicular to the valve axis when the diaphragm is displaced, the diaphragm is displaced while the protrusion of the diaphragm is slid to the guide member, thereby preventing the diaphragm fluctuation.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

1 is an overall view of the oil supply apparatus, and in this figure, reference numeral 1 denotes a main body of the fixed oil supply apparatus, and is composed of a lower case 2 and an upper case 3.

Inside the lower case 2, a flow meter 7 provided with a pipe 4 having one end connected to an underground tank (not shown), a pump 6 driven by a motor 5, and a flow pulse generator 7A. Is excreted.

A hose 9 is connected to the other end of the pipe 4 via a solenoid valve 8, and an oil supply nozzle 10 is disposed at the end thereof.

The nozzle hanger 11 is arranged in the outer wall part of the lower case 2, and the nozzle switch 12 which turns on / off the oil supply nozzle 10 by attachment and detachment is provided in the back of this nozzle hanger.

The front surface of the upper case 3 is provided with an indicator 13 for displaying the oil supply amount, the amount of money, the unit price, and the like, and the control device 14 is disposed therein.

The control apparatus 14 has each part in the part enclosed with the dashed-dotted line of FIG. 5 mentioned later.

Next, in FIG. 2 to FIG. 4, the oil passage 22 is disposed inside the nozzle body 21, and the discharge pipe 23 communicating with the oil passage 22 is provided at the nozzle body front end shaft. ) Is installed to protrude coaxially.

Reference numeral 24 denotes a valve seat for opening and closing the oil passage 22, and the main valve body 26 constituting the valve body 25 is disposed on the seat so as to be detachable from the seat. An insertion hole 27 is drilled through the main valve body 26, and at both sides thereof, a recess 28 and a protrusion 29 are formed upstream and downward of the oil passage 22, respectively. 30), 30 are drilled.

In the oil passage 22 of the nozzle body 21, a shaft support portion 31 having a shaft fitting hole 31A is protruded inward, and a sleeve 32 is fitted in the shaft fitting hole 23A. .

Reference numeral 33 denotes a valve shaft disposed to be retractable in the direction of the arrow AA 'through the sleeve 32 in the shaft support portion 31, and the sub-valve forming the valve body 25 together with the main valve body 26 during the tip shaft. Sieve 34 is integrally formed.

On the rear end side of the valve shaft 33, the rod insertion hole 35 is drilled in the axial direction, and a cutout 36 is formed.

The tip end shaft is inserted into the insertion hole 27 more than the sub valve body 34, and the adjustment nut 37 for adjusting the valve opening degree of the sub valve body 34 is fixed to the front end.

38 is a small flow path disposed in the valve shaft 33, and is composed of an inlet port 38A, an oil channel 38B, and an outlet port 38C, and disposed in the middle of the small channel 38 by the valve seat 39. It is.

The valve shaft 33 is urged in the direction of arrow A 'by the compression spring 40 and seats the main valve element 26 on the valve seat 24.

41 is a sliding rod inserted into the rod insertion hole 35, and is composed of a small diameter portion 41A, a valve portion 41B, an intermediate portion 41C, and a large diameter portion 41D. In the outer circumference, an engagement groove 42 corresponding to the cutout portion 36 is formed, and a lever engagement hole 43 is drilled in the large diameter portion 41D.

At this time, the first positioning groove 44 of the outer circumference of the valve shaft 33 is fitted to the positioning pin 45, and the second positioning of the valve shaft 33 on the rod insertion hole 35 side. As the positioning pin 47 is fitted into the groove 46, the cutout 36 and the engagement groove 42 are positioned so as to correspond to each other.

Reference numeral 48 is a lever guard installed in the nozzle body 21, 49 is a bent portion 49A can be rotated in the direction of the arrow (B-B ') through the shaft 50 to the rear of the lever guard 48. The L-shaped contact lever is provided so that its one end side 49B is fitted into the lever engagement hole 43 through the opening 51 of the nozzle body 21, and the other end side 49C is the front end side of the nozzle body 21. Extends.

52 is a weak spring provided between the large diameter part 41D and the shaft support part 31, and the sliding rod 41 always contacts the one end side 49B of the contact lever 49 by this spring force, The linkage between the lever 49 and the sliding rod 41 is maintained, and at the same time, the other end 49C of the one lever 49 is applied to the lever 49 by applying a counterclockwise force about the shaft 50. It is going to rotate in the direction of arrow B '.

On the other hand, reference numeral 53 is an operation lever for sliding the valve shaft 33 against the force of the compression spring 40, and is positioned in the lever guide 48 so that one end 53A is entirely above the lever guard 48. The hinge 54 is hinged through the shaft 54 and the other end shaft 53B is rotatable in the direction of the arrow C-C '.

Then, the other end side 49C of the contact lever 49 is in sliding contact with the intermediate portion 53C of the operation lever 53 and the linkage is attempted to rotate the operation lever 53 in the direction of the arrow C '. The configuration is maintained.

The other end side 53B of the operation lever 53 is latched on the valve body 25 disposed on the lever guard 48 by the half-opening stopper 55 or the deployment stopper 56, so that the operation lever 53 It can be held at a predetermined rotational position about the axis 54.

Reference numeral 57 in Fig. 3 is an automatic valve closing mechanism that automatically closes the valve body 25 when the predetermined liquid level level of the liquid level in the fuel tank of the oil supply vehicle is reached.

In the automatic valve closing mechanism 58, a thin plate-shaped diaphragm that is displaceable in the thickness direction is disposed on the side surface of the rod supporting portion 31, and the peripheral portion thereof is fixed to the nozzle body 21.

Reference numeral 59 is a cap located outside the diaphragm 58 and disposed in the nozzle body 21, and the cap 59 and the diaphragm 58 form a negative pressure chamber 60.

The cap 59 is provided with an annular guide portion 59a protruding toward the diaphragm 58, and the diaphragm 58 is slidably along the inner wall of the guide portion 59a of the cap 59. The spring support 65 in which the annular projection 65a fitted inward by 59a is provided.

A plurality of communication holes 65b communicating with the inside and the outside are provided on the circumference near the bottom in the protruding portion 65a of the spring support 65.

61 is a support plate which is located on the other side of the negative pressure chamber 60, the spring support 65 is integrally fixed to the central portion of the diaphragm 58, and is formed in a shape as shown in FIG. 61A). Long hole 62 in 61A. 62 is formed.

(63). 63, each of the long holes 62 at both ends of the axial direction. It is a pair of rod-shaped roller pins slidably fitted to the 62, and is detachably engaged over the engaging groove 42 at the cutout 36.

64 is a spring located in the negative pressure chamber 60 and installed between the spring support 65 on the diaphragm 58 side and the cap 59, and each roller pin through the diaphragm 58 and the support plate 61. (63) is urged to fit in the engaging groove 42 of the sliding rod 41.

In this way, the automatic valve closing mechanism 57 includes a diaphragm 58, a cap 59, a guide portion 59a, a support plate 61, a roller pin 63, a sputtering 64, a spring support 65 and It consists of the protrusion part 65a substantially.

In addition, reference numeral 66 denotes a valve displacement sensor for detecting the displacement of the diaphragm 58 disposed above the nozzle body 21 to perform the filling tank lubrication control. The valve displacement sensor 66 is a light emitting element and a light receiving element. The slit 68, which is mounted on the support plate 61 as shown in FIG. 4 and the photocoupler 67 having the elements, blocks the gap between the light emitting element and the light receiving element according to the displacement of the diaphragm 58. As shown in FIG. It is connected to the control apparatus 14 via the signal line 69. As shown in FIG. That is, the valve displacement sensor 66 outputs a "0" signal when the "1" signal is not detected when the displacement of the diaphragm 958 is detected.

Reference numeral 70 denotes a connecting member which is fastened by the fastener 71 at the tip end side of the nozzle body 21, and the discharge pipe 23 is screwed.

Auxiliary valve 72 is slidably fitted to the valve support portion 70A of the connector member 70 so as to face the main valve body 26. The auxiliary valve 72 is always provided with a valve seat 24 by a spring 73. You are stressed to sit on).

Reference numeral 74 denotes an air communication port serving as a bubble (bubble) detection sensor disposed at the distal end portion of the discharge pipe 23, and an air passage formed in the air communication tube 75 and the nozzle body 21 disposed in the discharge pipe 23. The 76 is sequentially communicated with the negative pressure chamber 60 of the automatic valve closing mechanism 57.

On the other hand, (77) and (77) are intake passages disposed in the valve seat 24, one end of which communicates with the air passage 76 between the atmospheric communication pipe 75 and the negative pressure chamber 60, and the other end. Silver communicates with the annular passageway 78 between the valve seat 24 and the auxiliary valve 72.

The reference numeral 79 is disposed at the leading end of the discharge pipe 23 and disposed at the tip side for the atmospheric communication port 74. For example, the reference numeral 79 is a photoelectric liquid level sensor comprising a light emitting element and a light receiving element. It connects to the control apparatus 14 in the oil supply apparatus main body 1 through the gas, and detects the bubble in the fuel tank of the oil supply vehicle as mentioned later. The liquid level sensor 79 is not limited to photoelectric but may be ultrasonic or capacitive.

81 is a plug disposed at the end of the nozzle body 21 to close the opening 82, 83 is a tubular connecting member screwed to the opening 84 in communication with the oil passage 22, 85 is A connecting member connected to the tubular connecting member 83 and connected to the hose 9.

The connecting member 85 is rotatable with respect to the tubular connecting member 83, that is, the nozzle body 21.

Next, in FIG. 5, the area enclosed by the dashed-dotted line shows the structure of each part provided in the control apparatus 14, and the parts other than the dashed-dotted line are the oil supply unit body 1 or as described above. It is disposed in the oil supply nozzle 10.

The liquid level sensor 79 is for detecting whether the liquid level reaches the tip side of the discharge pipe 23 in the vehicle fuel tank at the time of refueling the filling tank. When the liquid level reaches the liquid level, the liquid level is not reached. The OFF signal is supplied to the filling tank control means 90 of the control device 14.

The valve displacement sensor 66 is closed in the vehicle fuel tank at the time of refueling tank filled with the oil level increase on the liquid level, and the air communication port 74 is closed by this bubble or the liquid level by the bubble rising with the rise of the liquid level. Therefore, the valve opening degree of the valve body 25 is changed according to the displacement of the diaphragm 58 caused by the negative pressure change of the negative pressure type 60. The detection signal is used to fill the tank control means 90 and the nozzle. The main body 21 is supplied to the additional lubrication period indicator 91C disposed at a place where it can be visually confirmed, the first input terminal of the end gate 92, and the inverter 93, respectively. This additional oil supply period indicator 91C lights up during the additional oil supply period in filling the full tank.

The flow rate pulse transmitter 7A is configured to supply a flow rate pulse signal corresponding to the oil supply flow rate, the T input terminal of the filling tank control means 90, the oil supply detection means (mono-multivibrator) 94, and the oil supply flow rate measurement means 95. Supplied to each.

The nozzle switch 12 fills the tank switch means 90 with the nozzle switch signal through the inverter 96 according to the on / off (off) of the oil supply nozzle 10 with respect to the nozzle hanger 11 of the oil supplier. And the oil supply flow rate measuring means 95, the second input terminal of the end gate 97, the inverter 98, and the inverter 99, respectively.

In this case, the filling tank control means 90 is initialized by the inversion signal supplied from the inverter 96, and the oil supply flow rate measuring means 95 is a nozzle switch signal (OFF signal :) from the nozzle switch 12. It is reset by "0") and prepares for lubrication measurement in the next lubrication operation.

The filling tank control means 90 performs filling tank lubrication control and at the same time the output signal of the filling tank completion indicator 91A disposed at the eye where the nozzle body 21 can be seen and the first input terminal of the end gate 97. To each supply.

This filling tank completion indicator 91A lights up when the filling tank oil supply completes.

The oil supply detecting unit (94) wins from "0" to "1" in synchronization with the first flow pulse signal supplied from the flow pulse transmitter (7A) to the T input terminal, and stops the refueling of the bubble disappearing state, or the filling tank. Lubrication period indicator 91B provided at the Q output terminal where the output signal falling from "1" to "0" is located at the position where the nozzle body 21 can be visually confirmed when the flow rate pulse signal stops flowing. Supplies).

This oil supply period indicator 91B lights up while the flow rate pulse signal is output from the flow rate pulse generator 7A.

In this case, the oil supply period indicator 91B may be omitted and may be disposed as necessary.

The oil supply flow rate measuring means 95 measures the oil supply amount according to the flow rate pulse signal supplied from the flow rate pulse generator 7A, and supplies the output signal to the indicator drive circuit 100, and the indicator drive circuit 100 Display control of the indicator (13).

The inverted signal of the inverter 98 is supplied to the new two input terminals of the AND gate 95, and the output signal of the AND gate 92 is provided in the valve closing forget-notifier 101 disposed near the nozzle hanger 11. And S input terminals of the RS flip-flop 102, respectively.

The valve closing forget-notifier 101 is configured to forget the valve closing of the operation lever 53 of the oil supply nozzle 10 at the foam loss waiting time for additional oil supply in the filling tank oil supply or after completion of the filling tank oil filling nozzle. When the hook 11 is to be retried or when the hook is retried, that is, when the " 1 " signal is output from the end gate 92, the forgetting of the valve closing is informed.

The inverted signal of the inverter 99 is supplied to the first input terminal of the AND gate 103, while the inverted signal of the inverter 93 is supplied to the second input terminal of the AND gate 103. The output signal of the AND gate 103 is supplied to the R input terminal of the RS flip-flop 102. The output signal from the Q source end of the RS flip-flop 102 is supplied to the second input end of the AND gate 104, while the output signal of the AND gate 97 is supplied to the first of the AND gate 104. It is supplied to the input stage.

The drive signal " 1 " or the stop signal " 0 " output from this AND gate 104 is supplied to the drive circuit 105 for driving control of the motor 5, for example. In this case, the end gates 97 and 104 constitute the pump drive control means 106.

Next, the operation of this embodiment with the above configuration will be described.

When the oil feeder starts to fill the tank with the vehicle, the oil feeder 10 picks up the oil supply nozzle 10 from the nozzle hanger 11 of the oil supply device body 1 and inserts the discharge pipe 23 into the oil supply port of the vehicle fuel tank.

At this time, the nozzle switch signal (ON signal: "1") is supplied from the nozzle switch 12 to the second input terminal of the filling tank control means 90 and the end gate 97, and again of the filling tank control means 90 As a result of the output signal "1" being supplied to the first input terminal of the AND gate 97, the output signal "1" of this AND gate 97 is supplied to the first input terminal of the AND gate 104.

At this time, the "1" signal is supplied to the second input of the AND gate 104 at the Q output terminal of the RS flip-flop 102. As a result, the drive signal " 1 " is supplied to the drive circuit 105 at the AND gate 104, and the motor 5 is prayed by the drive circuit 105 so that the pump 6 pumps oil from the underground tank. Put it up.

Next, when the operation lever 53 is pulled up in the direction of the arrow C during the second oil supply for lubrication, the main valve body 26 is separated from the valve seat 24, and the oil passage 22 is largely opened to draw a large flow rate of the oil liquid. The auxiliary valve 72 is opened by the hydraulic pressure.

At this time, the roller pin 63 moves the long hole 62 of the support plate 61 to move from the center position of the diaphragm 58 to the right side in the figure. At this time, since the point position of the roller pin 63 is changed with respect to the load center of the spring 64, the diaphragm 58 tries to swing about its axis, but the spring is provided in the diaphragm 68 integrally with the support plate 61. Since the protruding portion 65a of the base 65 is guided to the guide portion 59a formed in the cap 59, the diaphragm 58 is prevented from swinging about its axis.

Therefore, the slit 68 fixed to the backing plate 61 is assembled so as to be located at the foot and the receiving light source side of the valve displacement sensor 66 for detecting the position of the negative pressure generator diaphragm 58. In connection with the conventional method, the diaphragm 58 swings about the axis line so that the light source is not blocked and malfunctions.

Subsequently, in response to the start of oil supply from the discharge pipe 23 into the vehicle fuel tank, the display signal of the oil supply detecting means 94 based on the flow rate pulse signal output from the flow rate pulse generator 7A is used in each of the indicators 91A91C. First, the oil supply period indicator 91B turns on (an oblique portion in FIG. 6) starts to supply the filling tank, thereby informing the oil supply that oil supply is started and oil is being supplied.

In addition, the oil supply flow rate measuring means 95 measures the oil supply amount in accordance with the flow pulse signal, and simultaneously drives the display drive circuit 100 to display and control the oil supply amount on the display 13.

Next, when the oil liquid level in the fuel tank oscillates and rises to the vicinity of the filling tank situation as the oil supply progresses, the atmospheric communication port 74 of the discharge pipe 23 is closed by the oil liquid or foam. As a result, the air in the negative pressure chamber 60 is sucked, and the inside of the negative pressure chamber 60 becomes negative pressure, and the diaphragm 58 displaces upward in FIG.

As a result, the rod-shaped rollers 63 and 63, which are slidably fitted into the long holes 62 and 62 of the support plates 61 and 61, are separated from the engaging grooves 42 of the sliding rod 41, and are rod-shaped. Since the rollers 63 and 63 are engaged only with the cutouts 36 of the valve shaft 33, the valve shaft 33 and the valve body 25 are controlled by the secondary force of the compression spring 40. In operation as described above, the valve portion 41B is separated from the valve seat 39 so that the small flow path 38 is opened.

At this time, the valve displacement sensor 66 detects the aforementioned valve displacement due to the displacement of the diaphragm 58, and sends the valve displacement detection signal "1" to the filling tank control means 90 and the additional oil supply period indicator 91C. However, as described above, when the rollers 63 and 63 are separated from the engaging groove 42 by the sliding rod 41, the rollers 63 and 63 are applied to the load center of the spring 64. The diaphragm 58 is liable to swing by the reaction of the point position returning to the state of FIG. 8 from the state of FIG.

However, the protruding portion 58a of the diaphragm 58 slips on the guide portion 59a of the cap 59, restricts the swing in the axial direction so that the diaphragm 58 can perform the displacement without the swing.

Therefore, the malfunction of the control system due to the fluctuation of the diaphragm 58 does not occur as in the prior art, and the valve displacement sensor 66 reliably detects the previous valve displacement due to the displacement of the diaphragm 58, and thus the valve displacement detection signal (" 1 ") is supplied to the filling tank control means 90 and the additional oil supply period indicator 91C.

In this way, the "0" signal is supplied from the filling tank control means 90 to the first input terminal of the AND gate 97 so that the stop signal "0" is supplied from the AND gate 104 to the driving circuit 105. The motor 5 stops.

As a result, the pumping of the oil liquid by the pump 6 stops and measurement of the predetermined bubble disappearing waiting time (period shown in FIG. 6 in FIG. 6) is started.

In addition, the additional oil supply period indicator 91C also lights up at the time of ⓛ in Fig. 6 (the hatched portion in Fig. 6).

Since the flow rate pulse is output from the flow pulse generator 7A while the flow rate due to the inertia of the pump 6 when the motor 5 is stopped at the positions indicated by ⓛ to ② flows, the oil supply period indicator 91B also continues to light up.

Subsequently, when the oil supply amount Q ₀ for the vehicle ends at the time of ② in FIG. 6 and the flow rate pulse signal is not output from the flow rate pulse generator 7A, the oil supply period indicator 91B is turned on at the same time. The oil supply flow rate display on the indicator 13 also stops temporarily.

At this time, since the detection signal is output from the valve displacement sensor 66, the additional oil supply period indicator 91C continues to light.

As a result, the tanker is informed that the waiting period for foaming in the additional tanking is filled.

Next, when the filling tank control means 90 completes the measurement of the bubble disappearing standby state of the period indicated by ③ in FIG. 6, the filling tank control means 90 at this time (indicated as ④ in the drawing) at the liquid level sensor 79 It enters the additional lubrication state at the time of (4) provided that the detection signal "1" is not supplied.

That is, when the OFF signal is supplied from the liquid level sensor 79 to the filling tank control means 90 due to the foaming in the fuel tank of the vehicle, the filling tank control means 90 is connected to the first input end of the AND gate 97. 1 "signal is supplied. At this time, since the nozzle switch 12 is ON and the Q output terminal of the RS flip-flop 102 becomes "1", the drive signal "1" is supplied from the AND gate 104 to the drive circuit 105. As a result of the motor 5 being driven, pumping of the oil liquid by the pump 6 is resumed and additional oil supply is started.

At this time, as described above, the oil supply nozzle 10 communicates with the upstream side and the downstream side of the valve body 25 only by the small flow path 38 as in the eighth. The flow rate is such that the liquid level does not bubble.

In this way, since the flow pulse signal is output from the flow pulse transmitter 7A, the oil supply period indicator 91B rises during the additional oil supply period of ⑤ at the time of ④ in FIG. 6, that is, the oil level rises and the liquid level sensor 79 The detection signal " 1 " supplies a " 0 " signal to the first input terminal of the filling tank control means 97 to stop the motor 5, and lights up for a while until all of the passage flows. part). At this time, the additional oil supply period indicator 91C continues to be lit (the oblique portion in FIG. 6), and at the same time, the oil supply amount display to the indicator 13 is resumed. This informs the refueler that it is an additional refueling period.

The filling tank control means 90 supplies the detection signal " 1 " from the liquid level sensor 79 in addition to the stop control of the motor 5, and simultaneously starts the measurement of the predetermined filling tank determination time.

Next, the bubble generated at the additional oil supply Q ₁ indicated by ⑤ in Fig. 5 before the filling tank control means 90 completes the measurement of the filling tank disappears and is detected from the liquid level sensor 79. When the signal "1" is lost and the non-detection signal "0" is outputted, the filling tank control means 90 cancels the filling tank determination and returns the "1" signal to the first input terminal of the AND gate 97 again. Of the motor 5 and the additional oil supply period indicated by ⑤ in FIG. 5 is completed, and when the flow is shifted to ⑥, the flow rate pulse signal from the flow pulse generator 7A is not output. It goes out (Fig. 6 white letters).

At this time, the additional oil supply period indicator 91C continues to light during the bubble disappearing waiting period of 6 in FIG.

This informs the oil tanker that the bubble is waiting to be lost.

Next, when the additional oil supply period indicated by ⑦ of FIG. 6 is entered, the oil supply period indicator 91B lights up in the same manner as the additional oil supply period shown above. At this time, the additional oil supply period indicator 91C continues to light.

In addition, the oil liquid level rises after the start of additional lubrication, and the detection signal "1" is supplied from the liquid level sensor 79 to the filling tank control means 90, and this means 90 is provided with the When the passage amount at this time flows by supplying a "0" signal to one input terminal and the passage amount flows at this time, the oil supply period indicator 91C continues to be lit, similarly to the bubble disappearing waiting period of 6). At this time, the additional oil supply period indicator 91C continues to light.

Further, as mentioned above, the filling tank determination by the filling tank control means 90 is performed, and the non-detection signal ("0") from the liquid level sensor 979 is output before the measurement of the filling tank determination time is completed, so that the motor 5 When it is driven and enters the additional oil supply period indicated by 9 in Fig. 6, the oil supply period indicator 91C continues to be lit in the same manner as the additional oil supply periods in the above?

Thereafter, in the additional oil supply period of ⑨, the ON signal is supplied from the tank sensor means 90 to the first input terminal of the AND gate 97 from the full tank control means 90, so that the driving circuit from the AND gate 104 is driven. As the stop signal "0" is supplied to the furnace 105, the motor 5 stops again, and the pumping of the oil liquid by the pump 6 is stopped.

At this time, since the flow rate pulse signal is not output from the flow rate pulse transmitter 7A, the oil supply period indicator 91B during lighting is turned off.

The filling tank control means 90 supplies the detection signal " 1 " from the liquid level sensor 79, in addition to the stop control of the motor 5, and simultaneously starts the measurement of the filling tank determination time. If the detection signal ("1") is still supplied from the liquid level sensor 70 at the time of completion of measurement, the filling tank control means 90 is not a bubble surface, and the liquid level actually reaches the liquid level sensor 79 It is determined that the tank filling is finally completed.

At this time, the oil supply period indicator (91B) is turned off as described above, but the filling tank completion indicator (91A) is turned on in accordance with the output signal of the filling tank control means 90 to inform the oil supply completeness of the filling tank.

The oil feeder then removes the oil supply nozzle 10 from the oil supply port, and returns the operation lever 53 to perform the valve closing operation. At this time, the oil supply nozzle 10 has a diaphragm 58 displaced upward (approximately 2 mm) as shown in FIG. 8, and the roller pin 63 is engaged from the engaging groove 42 of the sliding rod 41. It is in the state which moved in the long hole 62 of the support plate 61 to the left side in the figure in the state raised and engaged only in the notch 36 of the valve shaft 33. As shown in FIG. Accordingly, as the operation lever 53 is rotated in the direction C ′ shown by the arrow in FIG. 2 to perform the valve closing operation, the sliding rod 41 causes the valve seat 41B to be formed on the valve shaft 33. In contact with the part 39, it slides to the right in FIG. By sliding of this sliding rod 41, the notch 36 of the valve shaft 33 and the engaging groove 42 of the sliding rod 41 correspond again. At this time, the atmospheric communication port 74 is discharged from the oil supply port of the oil supply nozzle 10 and at the same time communicate with the atmosphere, the negative pressure chamber 60 is already compensated by the atmospheric pressure, so the diaphragm 58 is a portion of the spring 64 It is pressed downward by the force as shown in FIG. Therefore, when the above-mentioned notch 36 and the engaging groove 42 correspond to the valve closing operation of the operating lever 53, the long holes 62 and 62 of the support plate 61 provided in the diaphragm 58 are provided. The rollers 63 and 63 held in the column enter the engagement groove 42 again, so that the valve shaft 33 and the sliding rod 41 are operated through the rollers 63 and 63. In accordance with the operation of the lever 53, they are integrally slidably engaged. By the way, when the above-mentioned rollers 63 and 63 enter into the engagement groove 42 again, in the state where the notch 36 and the engagement groove 42 came out correspondingly, one roller of the corresponding shaft ( Only the 63 is allowed to enter the engagement groove 42 so that the diaphragm 58 is oscillated about the axial direction, but the protruding portion 65a of the spring support 65 is inwardly guided by the guide portion 59a of the cap 56. Slip in the fitted state to prevent the fluctuation of the die-off ram (58). Therefore, since neither the rollers 63 nor 63 enters the engagement groove 42 until the notch 36 and the engagement groove 42 correspond completely, the valve closing operation of the operating lever 53 is securely performed. Until the completion of the operation, a stable operation in which the position of the slit 68 is maintained in the light shielding state is obtained at the position where the diaphragm 58 is displaced by negative pressure. Thus, the diaphragm swings when the operating lever is returned in the negative pressure generation state as in the prior art. The malfunction of the valve displacement sensor generated by the controller does not cause malfunction of the operator and the control system of the oil supply device.

And, for example, if the oil supply forgets the valve closing operation of the operation lever 53 due to busy work and returns the oil supply nozzle 10 to the nozzle hanger 11, the AND gate 92 outputs " 1 " Since the valve closing forgetting alarm 91 is operated to inform the oil supply that the oil supply nozzle 10 is in the valve open state.

At this time, when the valve closing operation of the oil supply nozzle 10 is incomplete, since the output signal of the AND gate 92 does not become "0", the valve closing forgetting alarm does not lose its function, and thus the valve opening notification is furthermore. It is certain.

In the above embodiment, the fixed oil supply apparatus has been described as an example, but the present invention is not limited thereto and may be applied to a suspension oil supply apparatus.

In the above embodiment, the protrusion 65a formed on the spring support 65 is slidably inwardly fitted to the guide portion 59a formed on the cap 59. On the contrary, the protrusion 65a is a guide portion ( The protrusions 65a and the guide portion 59a are not limited to an annular shape. The yaw may be in a state in which the diaphragm 58 is restricted so as not to swing.

As described above, according to the present invention, even if the diaphragm attempts to swing in the axial direction as the diaphragm is displaced, the diaphragm can prevent the diaphragm fluctuation because the protrusion provided on the diaphragm slides and is displaced. Malfunctions can be prevented.

Therefore, erroneous operation of an operator can be prevented. In particular, it is effective when lubricating small quantities.

Claims (1)

It has a negative pressure chamber that communicates with the nozzle tip through an atmospheric communication pipe, in which air is sucked into the oil passage of the nozzle, and divides the negative pressure chamber, and when the negative pressure chamber becomes negative pressure, the diaphragm displaces. In the oil supply apparatus comprising a valve displacement means for changing the valve opening degree of the valve for opening and closing the oil passage in conjunction with the displacement of the diaphragm, and a valve displacement detection means for detecting the displacement of the valve by detecting the displacement of the diaphragm And a projection which protrudes in the displacement direction in the diaphragm, and a guide which guides the projection in a predetermined direction in the negative pressure chamber facing the diaphragm.