JPS59142999A - Lubricating nozzle with inclination detector - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention]

The present invention relates to a refueling nozzle used when refueling a vehicle such as an automobile with gasoline at a refueling station. It concerns a refueling nozzle equipped with an inclination detection device, which is effective for implementing refueling control.As a refueling device, there have traditionally been 4Φ types. However, for example, in the ground-mounted type 6, when the refueling nozzle is removed from the nozzle hanger E), in response to this, the refueling pump is automatically turned on and off. is configured to be activated. When the oil supply pump operates, the oil is pumped from the pump to the oil supply nozzle via the bowse, so that oil can be supplied at any time fg. ′? That is, by inserting the refueling nozzle into the refueling port of an automobile, etc., and pulling the nozzle lever, refueling can be started immediately. Therefore, if you accidentally pull the lever before completely inserting the refueling nozzle into the vehicle's refueling port, oil liquid may be scattered from the refueling nozzle's outlet, causing a fire or a fire. There is a danger of explosion due to J1 t17. In addition, once the refueling nozzle has been inserted into the refueling port and refueling has started, the refueling nozzle may be inserted incompletely due to vibration, etc., or may be removed. There is a danger of accidents [4]. Furthermore, in this type of conventional oil supply device, the motor is operated even while the oil supply nozzle is inserted into the oil supply port on the center shaft after it is removed from the nozzle hook, which wastes a lot of power. 4. After refueling the arc 1.) There are disadvantages such as a lot of wasteful electricity consumption as the Tanabata remains activated.
The driver of the axle receiving the oil does it himself - in the so-called Relf or One-His type refueling system - C requires a person who is not used to refueling to perform the refueling work directly, so the refueling nozzle is used to refuel) 2! Therefore, until the refueling nozzle is securely inserted into the refueling port, the discharge of uraami from the refueling nozzle (if not actually prevented) will increase the probability of causing an oil leak due to incorrect operation. However, it is necessary to have a control means that can stop refueling even if the refueling nozzle comes off from the refueling port during refueling.For this purpose, for example, an optical detection means is installed at the tip of the refueling nozzle. Then, when the refueling nozzle is inserted into the refueling port on the width axis, the amount of light in that part decreases, which is used to detect whether the refueling nozzle is completely inserted into the refueling port. A refueling control device has been proposed in the past that prohibits the discharge of oil from the refueling nozzle while the oil supply nozzle is inserted. An example of such a conventional refueling control device is shown in FIG. In the figure, Rin and Rout are photosensitive resistors such as a photoconductor or a photoelectric conversion element that change the resistance value according to the received light Lt1, and each is a fixed resistor R1.
, R2, and these series circuits
Connected in parallel to 1M E. Therefore, the resistance R1, R2 and the photosensitive resistance Rin
, Rout constitute a bridge circuit. Further, Rin is irradiated with light from the tip of the refueling nozzle via the light guide 11, and ROI+ is irradiated with surrounding external light via the light guide 12. Therefore, the connection point Δ of the bridge, A signal voltage corresponding to each light iij is generated at B. The signal voltages at the connection points A and B are supplied to the differential amplifier 14. The output j of the differential amplifier 14 connects the control contact 1
5 is controlled to open and close. Control contact 15 is connected in series with nozzle switch 1G and relay 17 to power supply 18. The relay 17 is a power switch 20 for the pump motor 1a.
control. During the refueling operation, the nozzle switch 16 is closed as soon as the refueling nozzle is removed from the nozzle hook. However, until the refueling nozzle is inserted into the vehicle's refueling port, the light guide 11
The light EH1 used before being transmitted to the photosensitive resistors Rin and R01lt via Rin and R012 is approximately equal to 90%, and usually the resistances of R1 and R2 (the targets are chosen equally, so the point A
The signal lights of and B are equal to (J. Therefore, the output of the differential amplifier 1/l is at the [-1- level, the control contact 15 is kept open, and the relay 17 is connected to the NJ9Aa. For this reason, the pump motor 1a is not driven either, and even if the lever of the refueling nozzle is pulled by mistake, no oil will be discharged.When the refueling nozzle is completely inserted into the refueling tank l of the vehicle, Since the amount of light Q4 shining on the photosensitive resistor R11) through the optical power source 11 becomes sufficiently small, its resistance value increases and occurs at point A of the bridge (the No. 3 voltage increases. On the other hand, at point B The signal light does not change much. Therefore, the output of the differential amplifier 14 becomes high level,
Control contact 15 is closed. To this (, relay 17
Since the pump motor 1a is driven, the oil is sent to the oil supply nozzle, and the oil is discharged from the nozzle. ld so that refueling is done in real i-j
If the device shown in Figure 1 is used as shown in Figure 1, the fuel nozzle or the vehicle (Iili's refueling 1) will not be completely connected until the refueling nozzle is connected to the device shown in Figure 1. Even if the fuel switch is turned on, the ?111 fluid or discharge piping will be 7'r. C. To prevent accidents such as spilling or sprinkling the oil outside the vehicle's fuel tank, cover the 3°. However, in the device shown in Fig. 1, the tip 1iil of the refueling nozzle
Since refueling control is performed depending on the comparison (difference) between the light intensity of +I;l:J and the light intensity of d3 in the surrounding environment at the 1m section, there is a drawback that it is easy to malfunction when the surroundings are dark. I understand that. Once you have started refueling qSj, if the refueling nozzle is removed from the refueling nozzle (if it falls, the refueling nozzle σ") happens to be removed, and the surroundings are dark, the discharge of oil does not stop, or -
Even if the car stopped, the oil that had been rolling around would restart and there was a risk of spilling the oil outside the fuel tank. The present invention has been made in view of the above circumstances. The object of the present invention is to provide a refueling nozzle which detects whether there is a fuel tank or not and which can be turned on so as to stop refueling while it is in the upward direction. Sui C straw,
The present invention is based on the fact that the point between the tips of the refueling nozzle [-1] is facing downward, and when it is facing upward, the refueling nozzle has come off the refueling port. This was done based on the following. In order to achieve the above object (d-3 of the present invention), the refueling nozzle is provided with a photosensitive layer resistor whose resistance value changes depending on the amount of light as the light amount detection means, and a light emitting element (as the light emitting means). For example, a light emitting diode) is further provided with a light shielding body for controlling the arrival of light from the light emitting element to the photosensitive resistor according to the inclination of the refueling nozzle. The resistance value of the wire is made to vary depending on the intensity of light reaching from the light emitting element, and to vary depending on the inclination of the refueling nozzle (1'4). 2 is a schematic side view of the oil supply control device to which the present invention is applied.
b, flow meter 1C, pulse oscillator 1d, oil supply 10 display meter 1
0, hose 1 [, nozzle hook (zu 1!), refueling nozzle 1]
1), a nozzle switch 11, and a nozzle lever 1).
In the control circuit a, 50 is a detector provided at the tip of the refueling nozzle 11). 3 is a car that is about to be refueled, 4 is its fuel tank, and 5 is the refueling port of the fuel tank 4. FIG. 3 is an enlarged side view of the refueling nozzle 111 portion of FIG. 2. , No. 78, which is the same as Fig. 2, shows the same part. Inside the frontage at the tip of the refueling nozzle, there is an external light introduction hole 23.
is a lead wire for connecting the detector 50 to the control circuit 2. FIG. 4 shows an embodiment of the refueling nozzle of the present invention. It is a cross-sectional view of a main part shown in FIG.
is provided. In addition, inside the frontage at the tip of the refueling nozzle,
A light emitting element 22 as a light emitting means is installed, and a light sensitive resistor 21 as a light amount detection means for liquid level detection is also installed at a position opposite to this. 11, with the refueling nozzle facing upward or downward.
Move the small room! l! Ilzuru. When the refueling nozzle is pointing downward, the light shielding body 24 (in the solid line position shown in the figure) allows the light emitted from the light emitting tube 22 to pass through the g1 through hole.
This prevents the light from reaching the photosensitive resistor Rin through G'. On the other hand, when the refueling nozzle faces upward, the light shielding 1? /
I (Y) moves to the dotted line position shown in the figure, so the light emitted from the light emitting element 22 passes through the rock hole 20 and passes through the photosensitive resistor R1 old Z.
tlJ 3♀be able to speak. The oil level in the fuel tank 4 is low, and air is interposed between the liquid level detection photosensitive resistor 21 and the light-emitting cable 22.
Well, the light emitted from the light emitting element 22 is a photosensitive Its resistor 2 for liquid level detection.
] (The resistance value of the light-sensitive resistor 21 for detecting the liquid level has started to decrease due to the illumination.) On the other hand, the oil level is rising, and the resistance value of the light-sensitive resistor 21 for detecting the liquid level and the light-emitting element 22 is decreasing. There is an oil liquid h1 between

[
As the light emitted from the light emitting element 22 decreases, the amount of light used in the photosensitive resistor 21 for detecting the liquid level decreases, and the resistance of the photosensitive resistor 21 for detecting the liquid level decreases. Regarding the applicant's patent application on page 9 of J17] B11
8- Month (refueling; 1lli, 1all teaching', C
, N-1). 4 months, 2γ(J, detector 50/
7. Inside the bath (This is an air vent hole to prevent air from flowing out when the liquid level rises.) It is a block diagram, and the symbols "jl-" in FIG. 1, FIG. 2 d5, and FIG. 4 are the same; 1; or equivalent parts are shown. )＼Nozzle hook &-When removed from J1g, from nozzle switch 11,
A signal indicating that the nozzle has been removed is generated, the nozzle switch 16 is closed, and the nozzle switch 1 signal relay 29 is activated. This (relay contact 2
9A and 29B are closed. In addition, as will be clear from the description below, in this case, the relay contacts 28A, 30B, 30A
+, 1 - (Yes, the normally open contact 42A is open. Refueling nozzle '11) is completely inserted into the fuel filler port 5 of the automobile; in L, the brightness at the tip of the refueling nozzle 1h is ] r value lower 1 (Since the value of r is 6, the resistance value of the light sensitive resistor 1ain installed at the tip of the refueling nozzle 1h is equal to the resistance value of the external light introduction hole 2.
a J: Light input 4/receiver () is below the set value. Therefore, the non-inverting input (, violation inverting input j, remote c′yO) of the second amplifier lake 35 is 51. The output of the comparator 35 is low level. Therefore, the output of the ant gate 36 is at the 1- level. As a result, the output of the inverter 37 is high level, and the insertion detection power rank 32 is At this time, the level detection counter 33 counts the output pulses of the pulse oscillator 31 via the AND GO 1-49, and the T-flip 40 may be turned off. , this is set, and as mentioned above (this relay contact 30A is open, it has no effect on the operation of the water control circuit. Refueling nozzle 11) is completely inserted into the refueling port 5. 7, the refueling nozzle always points downward.At this point, the brightness inside the refueling port 5 is 1 star compared to the surrounding area (sufficiently dark, and the light from the light emitting element 22 (The amount of light that is blocked by the light shielding body 24 and reaches the photosensitive resistor Rin becomes close to zero - C-1 photosensitive resistor 1 in &) The resistance value becomes sufficiently large. As a result, The output J of the second comparator 35 becomes a high level. On the other hand, before the oil level in the fuel tank 4 rises to the detector 50, the light-sensitive sensor for liquid level detection is sent from the light-emitting cable 22. The amount of light irradiated to the resistor 21-L is sufficient, and the resistance of the liquid level detection photosensitive resistor 21 is small. Therefore, the inverting input (, 'l,
is smaller than the non-inverting input, and its output (J) is at high level. The counter 32 outputs a pulse of 1.I from the pulse oscillator 31.
It begins to decay. Level detection counters 33 and 1
-Noritsubu Frotu/lO [Yuriret is done. The insertion detection counter 32 outputs one pulse to UJ, which is an old source of N pulses from the pulse oscillator 31. As mentioned above, the refueling nozzle is removed and the relay contact 29 [
3 is opened, the first three D-flip-flops are set, and the Q output curve 1"'J straw, the 1] terminal input of the 21st flip-flop 38 becomes "1". -f Therefore, when the first pulse is output from the insertion detection counter 32, the Q of the second D-flip float no.
The output is set to "1" for 4r, the refueling relay 28 is turned on, and the relay contact 28A in Fig. 6 is closed, so the pump motor relay 30 is energized and the relay contacts 30A, 30B
, 30C are closed. As a result, oil supply is started when the pump motor 1a is activated by 1°, and at the same time, the pump motor relay 3° is self-held. In addition, this Togi (31, level detection 7J unku 33J3
Since T-flip-flop 40 and T-flip-flop 40 are in reset mode, the closing of 30A does not affect the operation 1'1 of control circuit 1111. -Rina o5, refueling certain stop relay 42
is not energized. On the other hand, the 2nd D-Noritsubu Flow Two 133 (7) Q output becomes "1"
- Flip-flop 39 is set to cell 1, and its Q output becomes ``○pa.''
When the 2nd f17i1 pulse from rank t, '32 is output, the Q output of the 1st 21st flip-flop 38 becomes "0". As a result, the oil supply IIJ function relay 28 is turned off and the relay contact 28A is opened. However, since the pump motor relay 30 is self-held by its self-holding contact 30B, oil supply continues. If the refueling nozzle falls off from the refueling port 5 while refueling is being performed as described in the example above, the C1 photosensitive resistor Rin
The light shielding body 24 moves and the light emitting element 22
When the light is irradiated onto the photosensitive resistor R111, or when the oil level rises and the amount of light from the light emitting system 22 that illuminates the photosensitive resistor 21 for detecting C, C and f1 surfaces decreases, the light Either the resistance value of the sensitive resistor Rin decreases, or the resistance of the liquid level detection photosensitive resistor 21 increases. Therefore, the output of the second comparator 35 and the first comparator 34 become low level, and the AND gate 3G
output becomes low level. As a result, inverter 37
The output of the hars r level is raised, and the insertion detection counter 32 is reset via 49 to the ant game 1, and at the same time, the level detection counter 33 kj begins to count the pulse output of the three hals optical instruments 1. . Every time the output of M pulses is output, the level detection counter 33 generates an output J, and the flip-flop 40 is turned on. Since the contact +n 30 A kl is closed, the refueling enable relay 42 is activated and the relay contact 42A is opened. Therefore, the pump mortar relay 30 is deenergized, the pump motor 1a is cooled down, and the oil supply is interrupted or terminated. If the refueling is done in the middle RJi like this, once the refueling nozzle is returned to the nozzle hooked state of 1g, the circuit shown in Figures 5 and 6 will return to the initial state, and then the refueling nozzle will By removing , the same refueling operation as described above can be performed. In other words, if the refueling is interrupted because the refueling nozzle falls off during refueling, the photosensitive resistor Rin will not be irradiated with light, and the light shielding body 2/l will not emit light. 2
When the light of 2 was turned on, the oil supply was restarted and the oil was discharged.
1. In the 13A/' length embodiment, the light emitting means is directly installed at the tip of the refueling nozzle, and the light emitting lower stage is installed directly at the tip of the refueling nozzle. Lubricating the light emitting part 1b and the light receiving part at the lower stage of light amount detection (it may be installed inside the main body and guided to the tip of the refueling nozzle with a Δbutical fiber.Furthermore, in the above explanation, the relay contact 30G is used) -7
：、■-Turn on/A control 1a J: Did you turn it on?
1) Item 11 [-Instead of motor 1a, motor 1a and pump i
By controlling the stop valve between the ramp and the pump 11) and the refueling nozzle 11), the refueling nozzle 11 is closed until the pump motor relay 30 is not energized.
It is clear that the provision may be made to prohibit the discharge of oil from 1. Fig. 7 is a side view showing an example in which only the bulge detection part of the refueling nozzle is constructed as a separate body, and the same reference numerals as in Fig. 4 indicate the same or equivalent parts. As is clear from the figure, the refueling knife facing downward is located at the position of the light shield 24 (J↓ as shown by the solid line in the figure), so the light-sensitive resistor Rin/\ The arrival of the light
E is prevented. On the other hand, the refueling nozzle is facing upward (
When the light is on, the light shielding body 24 is at the position indicated by the dotted line, so
Light comes to be irradiated from the light emitting element 22 to the photosensitive resistor Rin. Therefore, it is possible to detect the inclination of the refueling nozzle in the same way as described above. Therefore, since the detector of this embodiment detects the tilt, it can also be installed at other suitable locations on the nozzle, such as the nozzle's desk. As such, according to the present invention, 1) the refueling nozzle is completely inserted into the refueling nozzle, and the amount of light incident on the photosensitive resistor Rin is less than h\, 2) the refueling nozzle's The tip should be oriented toward the
1', since it is possible to slide the refueling nozzle down, it guarantees safe refueling operation.Also, after removing the refueling nozzle and starting refueling ( It is also possible to prevent refueling from being resumed unless the nozzle is hooked (until the nozzle is returned to normal). It is possible to prevent and cover the risk of causing an unexpected accident.

[Brief explanation of the drawing]

Figure 1 is a block diagram showing an example of a conventional oil supply control device.
Fig. 2 is a schematic side view of the external appearance of a refueling control device to which the present invention is applied, Fig. 3 is an enlarged side view of the refueling nozzle portion of one embodiment of the present invention, and Fig. 4 shows the main points of the above embodiment. Fig. 5j is a block diagram showing an example of a control circuit of a refueling control device to which the refueling nozzle of the present invention is applied, and Fig. 6 is a block diagram showing an example of a circuit of a bomb smoke control portion. figure,
No. 7 shows an example of a case where the inclination detection part of the refueling nozzle is configured independently, and is a main part 1) i-side view 1, 1...
Oil supply 1 large, 1a...Motor, 11]...Pump, 1 piece...Hose, 1g...Nozzle hook (p, 11)...
Refueling nozzle, 11... Nozzle switch, '11 (...
・Nozzle lever, 2...control circuit, 3...automobile,
5... Refueling port, Rln... Photosensitive resistor (light detection means), 21... Light sensitive resistor for liquid level detection, 22... Light emitting element, 23... External light center manhole, 2/ I... light shielding body, 28
... Refueling possible relay, 29... Nozzle switch (f
fi +)j relay, 30... Pump motor relay, 31... Pulse oscillator, 32... Insertion detection counter, 33... Level detection counter, 34. ．． 35...
・First. 2nd] Enbarreta, 38.39... 1st. 2nd D-flip flop, 40...T-flip flop, 50...Kichi □Representative patent attorney Michi Hiraki 1 person Figure 1 □-■ 23] h Figure 4

Claims (1)

[Claims] (1) A refueling nozzle installed at the tip of the hose for discharging the oil pumped through the hose by a pump, the refueling nozzle being connected to A light emitting means capable of irradiating light onto the detection means, and a refueling nozzle that is movably housed and selectively directs an optical path from the light emitting means to the light detection means according to the position of the refueling nozzle. A refueling nozzle with a covering tilt detection device characterized by being equipped with a light blocking body that forms and blocks light.