JPH0784237B2 - Refueling hose feeding device - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a refueling hose feeding device used in a gas station or the like for supplying a vehicle with fuel such as regular gasoline, high octane gasoline or light oil.

2. Description of the Related Art Conventionally, in order to effectively use the site of a gas filling station, the gas filling nozzle is provided by feeding and winding a flexible oil filling hose connected to the filling nozzle. A device has been realized for lowering and raising from the ceiling of. A switch for operating the lowering and raising of the nozzle is provided near the nozzle, and the operator controls the lowering and raising of the nozzle by operating this switch. The nozzle and switch are
In order not to hinder the running of the automobile and to enable the operator to operate the switch, the vehicle is elevated from the ground to a height of, for example, 1.8 m and stopped.

In such a prior art, especially when a large dump truck or the like travels, the nozzles and switches thereof may come into contact with the body of the dump truck and be damaged. If the rest position of the nozzle is set higher, it is possible to prevent the nozzle and switch from touching such a large dump truck, but doing so makes the switch inaccessible to the operator. .

A new prior art for solving this problem is, for example,
It is disclosed in 49-132900 and Japanese Patent Laid-Open No. 53-39511. In this prior art, a worker can hold a fuel oil refueling nozzle suspended from the ceiling of a gas station so that it can be carried by hand. Operate an ultrasonic or wireless transmitter to move up and down.

Problems to be Solved by the Invention In such a prior art, when only a single refueling nozzle is provided, lowering and raising of the nozzle can be performed without error by remote control of the transmitter.

However, when a nozzle is provided for each of a plurality of oil types, and when a plurality of combinations of nozzles for each of a plurality of oil types are provided, a plurality of nozzles are simultaneously lowered by remote operation of the transmitter. May occur. Another prior art for solving such a problem is disclosed in, for example, Japanese Patent Laid-Open No. 3-698. In this prior art, a refueling means for descending and ascending a nozzle is provided at a high place of a gas filling station, and a light receiving means is provided at a place different from this refueling means, and a transmitter carried by a worker on the ground transmits a signal. When the received light signal is received by the light receiving means, a specific oil supply means included in the light signal is operated to lower or raise the nozzle.

In such other prior art, when an optical signal for specifying another refueling means different from the desired refueling means is transmitted from the transmitter due to an erroneous operation of the operator, the worker is located at the position where the light signal is transmitted. Regardless, there is a problem in that the different oil supply means is activated and the nozzle that is on standby above is lowered, which impairs safety.

Therefore, an object of the present invention is to provide a feeding hose feeding device with improved safety, which can selectively and reliably lower only a nozzle of a desired oil type.

Means for Solving the Problems The present invention is a transmitter operated by a worker on the ground to selectively generate an optical signal including an oil type code signal representing each oil type of a plurality of types of fuel oil for each oil type. A container, a plurality of nozzles provided at a high place of the fueling station and individually supplying fuel of each oil type for each oil type, and a flexible fueling hose connected to each nozzle to supply fuel oil A refueling means provided with a supply reel for winding a refueling hose and lowering and ascending a nozzle, and having a light receiving area provided in the refueling means,
When a plurality of light receiving means in which respective light receiving regions are at least partially overlapped below the oil supply means and an optical signal emitted from a transmitter are simultaneously received by each light receiving means, the oil type of the optical signal And a control means for controlling the fuel supply means so that at least a nozzle for supplying a fuel oil of an oil type corresponding to the code signal descends.

Operation According to the present invention, a worker on the ground carries a transmitter, which generates an oil type code signal representing an oil type of fuel oil, such as regular gasoline, high octane gasoline and light oil, as an optical signal. To do. A fueling means is provided at a high place such as a ceiling of the fueling station, and the fueling means is provided with a plurality of light receiving means. Each of these light-receiving means has directivity, in other words, has a limited light-receivable area capable of receiving an optical signal, and each of the light-receptive areas is entirely or partially overlapped. Therefore, by generating an optical signal including the oil type code signal from the overlapping light-receiving area by the transmitter, the optical signal is simultaneously received and detected by the plurality of light receiving means. The control means controls the oil supply means so that the nozzle that supplies the fuel oil of the oil type corresponding to the optical signal oil type code signal received by each light receiving means descends,
As a result, the supply reel is driven to feed the refueling hose, and the nozzle descends.

Thus, the fact that the light signals are simultaneously received by the respective light receiving means means that the transmitter is operated in the overlapping light receiving area below one refueling means selected by the operator,
Moreover, it means that one oil type is selected, and at this time, the nozzle corresponding to the oil type code signal is lowered. Therefore, when an optical signal is generated from the transmitter in an area other than the receivable at least partially overlapping area of each of the plurality of light receiving means, the optical signal is not received by each light receiving means at the same time. No lowering operation of the nozzle is performed. In this way, when the optical signal emitted from the transmitter in the overlapping light-receivable region below the one refueling means recognized by the operator is simultaneously received by the plurality of light receiving means provided in the one refueling means. Since only the nozzle corresponding to one oil type descends, the remaining nozzles provided in the one oil supply means or the nozzles provided in other oil supply means other than the one oil supply means accidentally descend. This prevents the malfunction.

Embodiment FIG. 1 is an electric circuit diagram of an embodiment of the present invention, and FIG. 2 is a simplified sectional view of the embodiment. A plurality of sets of refueling means 3a and 3b are provided on the ceiling 2 which is a high place of the refueling station 1. For example, nozzles 4a and 4b for regular gasoline and nozzles 5a and 5b for high octane gasoline are provided for each fuel type. The light oil nozzles 6a and 6b are suspended. In the explanation below,
The subscripts a and b of the reference marks may be omitted and may be collectively indicated by only numbers. A plurality (two in this embodiment) of light receiving means 7a1, 7a2; 7b1, 7b2 are provided near the oil supply means 3a, 3b on the ceiling 2, respectively. These light receiving means 7a1 and 7a2 have a light receiving directivity, and their individual light receiving regions are shown by reference numerals 8 and 9. These receivable areas 8 and 9 are the refueling means 3
Partially overlapping below a and 3b, the overlapping common light-receiving region is indicated by reference numeral 10. Similarly, the light receiving regions 11 and 12 of the light receiving means 7b1 and 7b2 partially overlap with each other in the common light receiving region 13. Common light receiving area 10,13
Are separated from each other and do not overlap.

As shown in FIG. 3, the operator 14 of the gas station wears the transmitter 16 around the wrist of his hand 15 with a belt 17 like a wristwatch. This transmitter 16 has a light emitting element 18 such as a light emitting diode, and an operation switch 1 for each oil type.
Has 9,20,21. These switches 19, 20 and 21 are compatible with regular gasoline, high octane gasoline and light oil.

These switches 1 as clearly shown in FIG.
The signals from 9, 20, 21 are given to the processing circuit 22 realized by a microcomputer or the like. This processing circuit
A read-only memory 23 is connected to 22. Processing circuit
Reference numeral 22 denotes an identification code signal for each transmitter 16 stored in advance in the memory 23 when any one of the operation switches 19, 20, 21 is operated, and fuel for operating the operation switches 19, 20, 21. An oil type code signal indicating an oil type is supplied to a driver 25 via a line 24, which drives the light emitting element 18, and thereby an optical signal 26 is generated.

FIG. 4 is a diagram showing the configuration of the optical signal 26. The optical signal 26 includes an identification code signal 27 and an oil type code signal 28, and is derived from the processing circuit 22 as an electric signal on the line 24. The identification code signal 27 is, for example, as shown in Table 1, has a plurality of bits, and has a different configuration for each transmitter individually owned and carried by each of the plurality of workers 14.

The oil type code signal 28 consists of a plurality of bits and represents the oil type of the fuel as shown in Table 2 as described above.

FIG. 5 is a sectional view of the light receiving means 7a1 for receiving the optical signal 26. The light receiving means 7a1 is made of a light receiving element 30a such as a phototransistor and a material having a light blocking property for forming the light receiving region 8 in order to achieve directivity of light reception, for example, metal or synthetic resin. A cylindrical body 31 having a right cylindrical shape or the like is provided.

FIG. 6 is a sectional view showing the structure of another embodiment of the light receiving means 7a1. A condenser lens 32 is provided in front of the light receiving element 30a.
Is provided, whereby directivity is achieved. The light receiving means 7a1 may have directivity by another configuration.

The other light receiving means 7a2 has the same structure and is provided with the light receiving element 30b (see FIG. 1 described above). Thus, each of the light receiving means 7a1, 7a2 has a region 8 and 9 capable of receiving light, and the light receiving elements 30a and 30b receive only the optical signal 26 generated in the common light receiving region 10, and refuel as described later. Perform hose feeding operation.

As shown in FIG. 7 (1), when the operator 14 operates the transmitter 16 in a place other than the common light receiving areas 10 and 13, those optical signals 34 and 35 reflect the ceiling 2 and the ground 36 and the like. The one light 34 is received only by the light receiving means 7a1 and is not received by the other light receiving means 7a2. In such a case, the nozzles 4a, 5a, 6a are not lowered. The other light signal 35 is received by the light receiving means 7b2, but the other light receiving means 7b1 is received.
Will not receive light, and in such a case the nozzles 4b, 5b,
No 6b descent. In this way, the nozzles 4,5,6
Can be prevented from being accidentally lowered.

Furthermore, as shown in FIG. 7 (2), when not only the worker 14 but also another worker 37 operates the transmitters 16 and 38 to generate optical signals 39, 40, The signals 39, 40 are reflected by the ceiling 2 and the ground 36 and individually received by the light receiving means 7a2, 7a1. The identification code signals 27 generated by the respective oscillators 16 and 38 are different from each other, so that the nozzles 4a, 5a and 6a are not inadvertently lowered in such a case.

Light receiving element 30 provided in each of the light receiving means 7a1 and 7a2
The outputs of a and 30b are given to the processing circuit 33 realized by a microcomputer or the like. When all the identification code signals 27 included in the optical signal 26 received by the light receiving elements 30a and 30b are the same, the processing circuit 33 displays the oil represented by the oil type code signal 28 included in the optical signal 26. High-level signals are derived from the lines 42, 43, and 44 corresponding to the seeds, respectively. Lines 42, 43 and 44 correspond to regular gasoline, high octane gasoline and light oil, respectively.

The outputs on lines 42,43,44 are toggle flip-flops 45,4.
Given to 6,47 respectively. Toggle flip-flop 45
When a high level signal is applied to its input terminal T via a line 42, it is inverted every time a high level signal is applied to its set output terminal Q and its reset output terminal. Derive the signal.

The output of the toggle flip-flop 45 is given to the control circuit 48, which controls the refueling means 49.

In the refueling means 49, the nozzle 4a that supplies regular gasoline
A refueling hose 50 having flexibility is connected to the, and the hose 50 is wound around a supply reel 51. Supply reel 51
Is rotatably driven by the winding motor of the chain 53 by the motor 52 capable of forward and reverse rotation, whereby the refueling hose 50 is fed out and the nozzle 4a is lowered, and the refueling hose 50 is wound around the supply reel 51 and the nozzle 4a. Is raised. The supply reel 51 is connected to the cam 55 via a gear train 54. The follower 56 responds to the cam surface of the cam 55, which changes the switching state of the micro switch 57. When the output of the set output terminal Q of the toggle flip-flop 45 is at a high level, the control circuit 48 drives the motor 52 in one direction to feed out the refueling hose 50 and descend the nozzle 4a. When the nozzle 4a descends. When the switching state of the microswitch 57 changes due to the displacement of the follower 56 that responds to the cam 55 when the lower limit position of the motor is reached, the motor 52 is stopped. Further, the control circuit 48 rotationally drives the motor 52 in the reverse direction when the set output terminal Q becomes low level and the reset output terminal becomes high level, and the refueling hose 50 is supplied.
When the nozzle 4a is raised and the nozzle 4a reaches the upper limit position, the switching state of the micro switch 57 is changed by the action of the cam 55 and the follower 56, thereby stopping the motor 52. Toggle flip-flop 4
The control circuits 58 and 59 and the oil supply means 60 and 61 provided in association with the valves 6 and 47 also have the same configuration corresponding to the nozzles 5a and 6a.

FIG. 8 is a flow chart for explaining the operation of the embodiment including the processing circuit 33 shown in FIG. When refueling, the worker 14 is required to use the transmitter 16 in the common light-receiving area 10.
Operate one of the operation switches 19, 20, 21 of the
Raise 26. When the light receiving elements 30a and 30b simultaneously receive the optical signal 26 from step n1 to step n2, the processing moves to step n3, where the processing circuit 33 includes the optical signal 26 received by each of the light receiving elements 30a and 30b. It is determined whether all the identification code signals 27 that are present are the same, and if they do not match, and if they do not match, a standby state is set in step n8, and the lines 42, 43, 44 remain at the low level. When it is determined that the identification code signals 27 of the optical signals 26 received by the light receiving elements 30a and 30b are all the same and match, the process proceeds from step n3 to step n4, and each light receiving element
It is determined whether or not the oil type code signals 28 of the outputs of 30a and 30b all match, and if they do not match, step n8
Move on to step n4 and step n4
Move to n5. In step n5, the lines 42, 43, 44 are associated with the lines 42, 43, 44 corresponding to the oil type represented by the oil type code signal 28.
A high level signal to one of the two. As a result, the stable states of the toggle flip-flops 45, 46, 47 are changed. For example, when a high-level signal is output to the line 42, the set output terminal Q of the toggle flip-flop 45 is inverted from low level to high level. At this time, the reset output terminal is inverted from the high level to the low level, whereby the refueling means 49 feeds the refueling hose 50 and the nozzle 4a is lowered by the action of the control circuit 48. Such an operation is as described above. .

After the refueling is completed, the worker 14 operates the transmitter 16 again in the common light receiving area 10 by operating one of the operation switches 19, 20, and 21 corresponding to the type of the refueled oil. As a result, the optical signal 26 is received by the received light signals 30a and 30b in the same manner as described above, and the operation of FIG. 8 is similarly performed, so that the stable state of one of the toggle flip-flops 45, 46 and 47 is inverted. For example, one of the motors 52 is driven to wind up the refueling hose 50, and the nozzle 4a rises to reach the upper limit position.

As another embodiment of the present invention, as shown in FIG.
The operation switch 63 is provided near the nozzle 4a, and the nozzle
When 4a is at the lower limit position, the operation switch 63 is operated when refueling is completed, and the output of the operation switch 63 is configured to be input to the input terminal T of the toggle flip-flop 45 via the OR gate 64. Good. Other nozzle 5
Similarly for a and 6a, install operation switches 65 and 66, and
R gates 67 and 68 are provided. Such embodiments are also within the spirit of the invention.

As described above, according to the present invention, an optical signal including an oil type code signal representing the oil type of fuel oil is generated from the transmitter, and the plurality of light receiving means have directivity of light reception. , The light receiving areas of the respective light receiving means are at least partially overlapped below the oil supply means, and the light receiving area of the transmitter is at least partially overlapped with each other. Is generated and the light signals are simultaneously received by the respective light receiving signals, the oil supply hose is extended so that the nozzle for supplying the fuel oil of the oil type represented by the oil type code signal included in the optical signal descends. Therefore, it is possible to reliably lower only the nozzle of the desired oil type and the desired oil type, and even if it is the nozzle of the desired oil type, the nozzles of other oil supply means may be accidentally lowered. Is prevented. This prevents the nozzles that are not used or should not be used for refueling from accidentally descending, and the nozzles are inadvertently placed in the passageway of the vehicle that is entering the refueling station or the vehicle that is about to depart from the refueling station. There is no risk of falling, and safety is improved.

[Brief description of drawings]

FIG. 1 is an overall electric circuit diagram of an embodiment of the present invention, FIG. 2 is a sectional view showing a part of the structure of a gas station 1 of the embodiment of the present invention, and FIG. 4 and 5 are views showing the structure of the optical signal 26, FIG. 5 is a sectional view of the light receiving means 7a1, FIG. 6 is a sectional view of the light receiving means 7a1 according to another embodiment of the present invention, and FIG. Sectional views for explaining the operation of the means 7a1, 7a2; 7b1, 7b2, FIG. 8 is a flow chart for explaining the operation of the embodiment shown in FIG. 1, and FIG. 9 is another embodiment of the present invention. It is an electric circuit diagram which shows a part of structure. 1 …… Gas station, 16,38 …… Transmitter, 7a1,7a2; 7b1,7b2 ……
Light receiving means, 8,9,11,12 …… Receivable area, 10,13 …… Common light receiving area, 33 …… Processing circuit, 45,46,47 …… Torg flip prop, 48,58, 59 …… Control circuit, 49,60,61 …… Lubricating means, 52 …… Motor capable of forward / reverse rotation, 50 …… Hose, 51
...... Supply reel

Claims (1)

[Claims] 1. A transmitter operated by a worker on the ground to selectively generate an optical signal for each oil type including an oil type code signal representing each oil type of a plurality of types of fuel oil, and a gas station of a gas station. A plurality of nozzles that are installed at a high place and individually supply the fuel of each oil type for each oil type, a flexible oil supply hose that is connected to each nozzle and supplies the fuel oil, and the oil supply hose is wound. Refueling means having a supply reel that lowers and raises the nozzle by means of the refueling means, and a refueling means that is provided in the refueling means and has light receiving regions,
When a plurality of light receiving means in which respective light receivable areas at least partially overlap below the oil supply means and an optical signal emitted from a transmitter are simultaneously received by each light receiving means, the oil type of the optical signal And a control means for controlling the refueling means so that at least a nozzle for supplying a fuel oil of an oil type corresponding to the code signal descends.