JPH0128070Y2 - - Google Patents

Description

[Detailed explanation of the invention] (a) Industrial application field This invention relates to a device for refueling automobiles by hanging a hose from above the refueling point, and more specifically, it has a function to set a scheduled amount, that is, a preset amount, in advance. The invention relates to a refueling device equipped with a setting means.

(b) Prior art In order to make use of the dirt floor widely, gas stations with narrow premises often adopt a type of refueling system in which a hose hangs down from above the refueling point (hereinafter referred to as a hanging type refueling system). . On the other hand, in recent years, in order to improve work efficiency, many machines have a so-called preset function that allows you to set the planned amount (preset amount) of refueling in advance and automatically stop refueling when the planned amount of refueling is reached. It's here. Such refueling devices require a switch to set the scheduled amount, which is operated by being attached to the walls of the filling station, the canopy pillar, or even the hose or nozzle itself.

(c) Problems that the invention aims to solve If the switch means is attached to a wall or pillar, it is cumbersome as it requires going to the location each time to refuel, while on the other hand, if the switch means is attached close to the hose or nozzle, Although there is an advantage of being able to operate it at hand, the reality is that the switch itself gets in the way of refueling work, and the number of signal lines connected to the switch increases, making it difficult to handle.

(d) Configuration and operation to solve the problem The configuration to solve the above problem consists of a pump,
A downstream pipe line of the flow meter is connected, and a hose connected to the pipe line is led out from an opening in a case installed above the refueling point, and a hose lifting means for raising and lowering the hose, and a flow meter are provided. A pulse signal generating means for outputting a number of pulse signals corresponding to the measured amount of oil, a pulse counting means for counting the pulse signals, and means for horizontally moving the lead-out hose within the range of the opening of the case; In a device equipped with a hose, a plurality of switch means are placed on both sides of the opening of the case along the direction of movement of the hose, and the hose is sandwiched in a non-contact state, and each outputs a different signal when the hose comes into contact with the hose. setting means for setting a preset value as a preset value in response to a hose detection signal outputted from one of the switch means; It is equipped with a comparison means that outputs a stop signal when the preset value is reached, and an oil feed control means that stops the oil feed when the stop signal is generated.
When the hose is moved to a switch position corresponding to a desired value and the hose is swung to operate the switch, a preset amount corresponding to the output signal of the switch is set.

(E) Embodiment In Figures 1, 2, 3, 4, and 5, 2 is a hose reel storage case that is attached to the ceiling 4 of the gas station and has an opening 3 for the hose hanging down on the lower surface. A detection switch 12 that detects the length of the unreeled hose based on the rotation angle of the reel 8 that is rotated by the motor 10 and winds the hose 6, and outputs a corresponding signal, extends in a spiral shape along the hose 6. air knob 1 near the nozzle 14 at one end.
By pressing the air knob 16, the other end of the air hose 18 to which the hose 1 is connected is connected.
A pneumatic converter 20 that converts the pressure of the air transmitted through the case 8 into an electric signal, and switches S ₁ to S ₁₀ (to be described later) installed in the hose lead-out portion of the case 2 in parallel in the direction of movement of the hose 6 are housed. , 21 connects the reel 8 and the tube 28 with a flexible tube.
0, the detection switch 12 and the converter 20 can be moved together within the case 2 within the opening 3 thereof by means of wheels 23.

Reference numeral 22 denotes a pump for pumping out oil, which is rotationally driven by a motor 24. The oil sent out from the pump 22 is measured by a flow meter 26 and then sent to the reel 8 via a pipe 28.

30, the flow meter 26 measures the unit oil amount (for example, 1/
100), a pulse transmitter that outputs one pulse signal every time the oil is measured, 32 a display that displays the amount of refueling, 34 a display that displays preset amount information, and 36 an electric circuit that will be described later. This is the stored control unit.

Next, each electric circuit will be explained based on Figure 6.
0 is a signal output circuit, which outputs motor activation signals b, c and start signal e (signal e is one pulse) when operation signal a, which is the output signal of converter 20, is input, and then operates for the second time. When signal a is input, motor energizing signals b and c disappear.

52 is a control circuit for the pump motor 24, which energizes the motor 24 to rotate while the motor energizing signal b is present.

Reference numeral 54 denotes a control circuit for the hose lifting motor 10, in which the motor 10 is energized to rotate in the normal direction by inputting the motor energizing signal c to lower the hose 6, and the length of the hose 6 that is fed out is equal to the refueling length (the first 1), the energization continues until the refueling position signal f (one pulse) output from the hose length detection switch 12 is input, and when the motor energization signal c disappears, the motor 10 is reversely energized to raise the hose 6, and when the hose 6 reaches the standby length, the energization is stopped by the standby position signal f' (one pulse) output from the hose length detection switch 12. Ru.

Reference numeral 56 denotes a refueling value counting circuit which counts the number of pulse signals p which are reset to zero upon input of the start signal e and is output from the pulse generator 30, and outputs the counted value signal g.

Reference numeral 58 denotes a display drive circuit which causes the input count value signal g to be numerically displayed on the display 32 as the amount of oil to be supplied.

60 is a count value monitoring circuit which outputs a monitor signal h only when the value of the count value signal g does not exceed a predetermined value, for example, 0.1 (liter). (Since the hose 6 is made of rubber, it gradually expands when pump pressure is applied, and the amount of oil required for this expansion is measured, so the value of the count signal g increases even though no lubrication is performed, and the amount of oil is increased.) In order to avoid confusion, a non-zero positive number is predetermined to account for this expansion.) 62 is a permission signal generation circuit, which detects the length of the hose 6 from the hose length detection switch 12 when refueling. a refueling length signal d that is output only while the length is
The permission signal i is output on condition that the previous monitoring signal h is input at the same time.

Reference numeral 64 denotes a display drive circuit, which displays the words "settable" on the display 66 as shown in FIG. 5 while the permission signal i is being input, thereby allowing the setting of a setting amount (preset amount) to be described later. let them know it's possible.

Reference numeral 68 denotes a signal cutoff circuit, and only when the permission signal i is input, any one of the switches S ₁ to S ₁₀ contacts the hose 6, and at this time, the hose detection signal j ₁ to j ₅ output from that switch is output. Let it pass.

Reference numeral 70 denotes a setting circuit, which is reset to zero upon input of the start signal e, and when any of the hose detection signals j ₁ to _{j 5} is input, a predetermined amount corresponding to that signal, that is, signal j ₁ is set to 10 (little). ), signal j ₂ is 20,
The signal j ₃ is set to 30, the signal j ₄ is set to 40, and the signal j ₅ is set to 50.

Note that even if, for example, signal j ₂ is input and 20 is set, if signal j ₄ is newly input, the previous setting is canceled and 40 is newly set.

Reference numeral 72 denotes a display drive circuit which receives a set value signal q representing the set value set in the setting circuit 70 and displays a numerical value on the display 74 as a set amount.

76 is a comparison circuit which compares the value of the set value signal q and the value of the count value signal g, and when the two match, outputs a stop signal m (one pulse) and sends it to the motor control circuit 52 to turn off the motor 24. give strength to After the stop signal m is input, the motor control circuit 52 once erases the motor energizing signal b and holds the motor 24 in a de-energized state until the motor energizing signal b is input again.

Reference numeral 80 is a timing circuit that outputs a fixed time signal r for a fixed period of time (for example, 10 seconds) from the time when the stop signal m is input.
is outputted and given to the display drive circuit 58, and the display drive circuit 58 flashes the display on the display 32 while this constant time signal r is input.

In the above configuration, when the knob 16 is pressed once, the operation signal a is outputted once from the converter 20, thereby returning the counting circuit 56 to zero, and the motor 2
4 is energized, the pump 22 is driven, and the motor 10 is energized to rotate in the normal direction, so that the hose 6 is fed out from its length when waiting for refueling to its length when refueling.

When the length of the hose 6 reaches the length at the time of refueling, further lowering of the hose 6 is stopped and the state is ready for refueling, but at this time, the length signal d during refueling and the monitoring signal h
Since both exist, the permission signal generation circuit 62 outputs the permission signal i to display "setting possible" on the display 66 to inform that the preset amount can be set, and also to output the permission signal i from the switches _S1 to _S10 . Signal cutoff circuit 6 in preparation for input of hose detection signals j ₁ to _{j 5}
8 allows this signal to pass.

Now if you try to set 30 (little),
Grasp the hose 6 and move it to the position shown in Figure 4.
Pull and move the hose 6 toward the switch S ₅ or S ₆ to bring the hose 6 into contact with the switch S ₅ or S ₆ . The hose detection signal _j3 outputted at this time passes through the signal cutoff circuit 68 and is input to the setting circuit 70, where a set value 30 corresponding to the hose detection signal _j3 is set as a preset value. After this, if you want to change the set value to 40, for example, move hose 6 to switch S ₇ or switch S ₈ , and then
All you have to do is shake the button to output the hose detection signal _j4 . By doing this, 40 is set instead of 30 in the setting circuit 70, and this set value is outputted as a set value signal q and displayed on the display 74.

When the setting is completed and refueling is started, the refueling amount is displayed on the display 32, and when the refueling amount exceeds 0.1, the monitoring signal h output from the count value monitoring circuit 60 disappears, so the permission signal i disappears and the display After the "settable" display on the device 66 disappears, even if the hose 6 is accidentally shaken and one of the switches S ₁ to _{S 10} is activated and the hose detection signal j ₁ to _{j 5} is output, the settings will not be reset. It does not reach the circuit 70 and the set value is not changed.

When the refueling operation progresses and the set value and the refueling value, that is, the value of the set value signal q and the value of the count value signal g match, the motor 24 is deenergized by the stop signal m output from the comparator circuit 76, and the refueling is started. ends. At this time, the display on the indicator 32 is flashed for a certain period of time to notify that the set amount of refueling has been completed.

After this, when the knob 16 is pressed once to output the operation signal a from the converter 20 again, the motor 10
is reversely biased, and the hose 6 is raised to its length when it is on standby for refueling. Note that the motor 24 was deenergized first, but if it is still energized at this time, it will be deenergized now.

In the above embodiment, the switches S ₁ to _{S 10} are contact type, but it is also possible to output a detection signal only when the hose comes close to a certain distance, that is, without contact. It is also possible to wrap metal foil or the like around the parts close to each switch so that this can be detected.

(f) Effects As detailed above, in the hanging type oil supply device, the switches that generate a signal to determine the setting value along the direction of movement of the hose are arranged in two rows, sandwiching the hose, at the outlet of the hose from the case. Therefore, when setting the scheduled amount, you can set the amount by simply moving the hose in the specified direction and shaking it, making it possible to set it quickly. Compared to installing a switch directly to the hose or nozzle, you don't have to go to that location, and you don't have to worry about it getting in the way of refueling work or having to deal with the additional signal lines. The problem can be solved and the appearance can be kept as clean as the conventional one (without a switch).

[Brief explanation of the drawing]

Fig. 1 shows an outline of a refueling station equipped with the refueling device of the present invention, Fig. 2 shows the outer shape of the hose reel case, Fig. 3 shows a cross section in the Y-Y direction in Fig. 2, and Fig. 4 shows the state of FIG. 2 viewed from the Z-Z direction, FIG. 5 shows the outline of the display portion, and FIG. 6 shows the electric circuit in a block diagram. 2...Case, 6...Hose, 8...Reel,
14... Nozzle, 16... Air knob, 22...
Pump, 26...flow meter, _S1 to _S10 ...switch.

Claims (1)

[Scope of utility model registration request] The downstream pipes of the pump and the flow meter are connected, and a hose connected to the pipes is led out from the opening of the case installed above the refueling point, and a hose lifting means for raising and lowering the hose is provided, and the flow rate is adjusted. It comprises a pulse signal generating means for outputting a number of pulse signals corresponding to the amount of oil measured by the meter, and a pulse counting means for counting the pulse signals, and also moves the lead-out hose in the horizontal direction within the range of the opening of the case. means, on both sides of the opening of the case along the direction of movement of the hose;
A plurality of switch means, each of which outputs a different signal when in contact with or in proximity to the hose, are arranged in two rows across the hose in a non-contact state, and when a hose detection signal is output from any of the switch means. a setting means for setting a preset value in response to a signal; a comparison means for outputting a stop signal when the count value of the pulse counting circuit reaches the preset value; and a comparison means for outputting a stop signal when the count value of the pulse counting circuit reaches the preset value; A refueling device characterized by comprising: an oil supply control means for stopping the oil supply.