JPH0234240Y2 - - Google Patents

Description

[Detailed description of the invention] (a) Industrial application field The present application relates to a refueling device for supplying relatively infrequently used oil such as high octane gasoline or diesel oil to automobiles at a refueling station.

(B) Prior art A refueling system used at a refueling station consists of a pump, a flow meter, a refueling hose, a nozzle, and a display (the display has two display surfaces), forming a single system. It is normal to use a large nozzle for high-speed refueling, but since it is necessary to refuel everything from large trucks to small passenger cars when using light oil, a large nozzle capable of high-speed refueling and a relatively low-speed refueling are used, as seen in JP-A-55-38214. In some cases, small nozzles and small nozzles are combined into one system so that either nozzle can supply oil. The display for this type of refueling device is arranged so that the display surface is on the front and rear surfaces of the refueling device, and the same content is displayed on each display surface, and each nozzle is located on the left and right sides of the refueling device Both large and small nozzles can be used on one display surface.

Furthermore, as seen in Japanese Patent Application Laid-Open No. 59-15094, there is also one in which a plurality of nozzles are connected to one flowmeter and each nozzle is provided with an indicator.

(c) Problem that the invention aims to solve However, in the former case, the amount of refueling can be confirmed on the front and rear display surfaces regardless of which nozzle is used; The surfaces will return to zero at the same time, and in the latter case, if one nozzle is used, all display surfaces will return to zero. In this case, if another worker removes the nozzle immediately after finishing refueling with one nozzle in order to start refueling with the other nozzle, the previous refueling amount display will immediately return to zero, making it impossible to reconfirm and causing inconvenience. It was hot.

Also, the sum of the lengths of the hose and nozzle, that is, the distance from the main body of the refueling device to the tip of the nozzle, is 3.
Since the size of the nozzle is set to be less than 1.2 m, it has become difficult to reach the nozzle as cars have become larger in recent years.

(d) Structure and operation for solving the problem Therefore, in the present application, even if the other nozzle is removed to solve the previous problem, the current oil supply amount display will return to zero and disappear. It is designed to expand the lubrication range and improve workability, namely, a pump that pumps out oil and sends it to the flowmeter, a motor that drives this pump, and a branch line on the secondary side of the flowmeter. an oil flow path with a plurality of branch pipes connected to the tips of the branch pipes and hoses and nozzles, respectively;
A pulse transmitter that outputs a number of pulse signals corresponding to the amount of oil measured by the flowmeter; a nozzle storage part in which each nozzle is held when not refueling; In a device equipped with a nozzle detection switch that outputs a signal depending on the presence or absence of the nozzle, each nozzle is provided with a coefficient circuit that coefficients the pulse signal, a display that displays the amount of oil supplied, and the nozzle switch in series. and the display surface of the display device belonging to that series and the base end of the hose are arranged on the same side of the device housing,
When one nozzle detection switch detects the movement of a nozzle from the housing part, the control means returns to zero only the counting circuit associated with the nozzle and allows the counting circuit to count the pulse signal; If the other nozzle is removed after the nozzle has finished refueling and the nozzle has been returned, only the display on the removed side is returned to zero, allowing a new counting display.

(E) Embodiment 2 is a housing for an oil supply system, and inside thereof there are a pump 6 driven by a motor 4, a flowmeter 10 for measuring the oil pumped through a pipe 8, and a flowmeter 1.
A pulse transmitter 12 that outputs one pulse signal p every time a unit oil amount (1/1000) is measured; indicators D ₁ and D ₂ that each display an independent display;
Case to store nozzles N ₁ and N ₂ when not refueling
C ₁ , C ₂ , nozzle N ₁ installed in relation to cases C ₁ , C ₂ ,
Nozzle detection switches S ₁ and S 2 that output nozzle signals _{n 1} and n ₂ corresponding to the presence or absence of N ₂ and a control section A that performs functions described later are housed. Note that case C ₁ ,
C ₂ is placed on the same side as the display surfaces of indicators D ₁ and D ₂ , making it easy to attach and detach nozzles N ₁ and N ₂ during work, and also ensure confirmation of nozzles that belong to the same series as the indicators. I have to.

H ₁ and H ₂ are hoses, one end of which is connected to nozzles N ₁ and N _{2, and the other end of each hose connected to the nozzle N 1 and N 2} .
Flowmeter 10 on the same side as the display surface of D ₁ and D ₂
The hose is connected to a branch pipe 14 branched from the secondary pipe line, thereby ensuring the maximum refueling range with a predetermined hose length.

In Fig. 2, G ₁ and G ₂ are gate circuits that receive nozzle signals n ₁ and n ₂ respectively, and when the signal n ₁ or signal n ₂ is at a high level (H state), the input pulse signal p is input. Pass it through and set it to low level (L
state) to prevent its passage. The switches S ₁ and S ₂ are in the L state when detecting the nozzles N ₁ and N ₂ , respectively, and change to the H state when they are no longer detected.

J ₁ and J ₂ are counting circuits, respectively, and the nozzle signals n ₁ ,
When n ₂ changes from L state to H state, the counted value is returned to zero, and each gate circuit
The number of pulse signals p passing through G ₁ and G ₂ is counted and the count value signals are output as K ₁ and k ₂ and displayed on the display D ₁ ,
Display D ₂ as the amount of oil supplied.

Q is a determination circuit that outputs a permission signal q to the motor drive circuit R only when either nozzle signal n ₁ or n ₂ is in the H state, and energizes the motor 4 to rotate, and when both signals are in the L state or in the H state. In the state, permission signal q
The motor 4 is deenergized without outputting.

In the following configuration, first, when both nozzles N ₁ and N ₂ are housed in cases C ₁ and C ₂ , the nozzle signals n ₁ and n ₂ output from switches S ₁ and S ₂ are as described above. It is in L state.

Next, considering the case where only the nozzle _N1 is removed from the case _C1 , the nozzle signal _n1 changes from the L state to the H state, and at this time, the counting circuit _J1 is first reset to zero. (The counting circuit J ₂ is not returned to zero because the nozzle signal n ₂ remains in the L state.) At the same time, the permission signal q is output from the determination circuit Q, and the motor 4 applied to the drive circuit R is energized, and the pump 6 is activated. is rotated.

Subsequently, when refueling is performed, the flowmeter 1 is transmitted from the transmitter 12.
A number of pulse signals p corresponding to the amount of oil measured by 0 are output, and this signal p passes through the gate circuit _G1 and is counted by the counter circuit _J1 , and the counted value is displayed as the amount of oil supplied on the display _D1 . Ru. (At this time, the gate circuit
Since _G2 is closed, the pulse signal p never reaches the counting circuit _J2 . ) When the refueling work is completed and the nozzle N ₁ is returned to the case C ₁ , the nozzle signal N ₁ changes from the H state to the L state,
As a result, the permission signal q output from the determination circuit Q disappears, so that the motor 4 is deenergized.

Also, while refueling with nozzle N ₁ , the nozzle
When N ₂ is removed from case C ₂ , the nozzle signal n ₂ being output from switch S ₂ changes from the L state to the H state, and at the same time as the counter circuit J ₂ returns to zero, the gate circuit G ₂ is opened and the pulse signal is output. P is allowed to pass, but at the same time, the permission signal q output from the determination circuit Q disappears, so the motor 4 is immediately stopped and oil supply by the nozzle N ₂ is not substantially performed.
Note that when nozzle N ₂ is returned to case C ₂ , oil supply by nozzle N ₁ continues.

On the other hand, without returning nozzle N ₂ to the case, insert nozzle N _1.
When the motor 4 is returned to the case, the motor 4 is energized again and is ready for refueling, but at this time the gate circuit
Since _G1 is closed, even if refueling is performed, the refueling value by nozzle _N2 will not be added to the previous count value in counting circuit _J1 .

Even when the nozzle N ₂ is removed from the case C ₂ and refueled while the nozzle N ₁ is housed in the case C ₁ , the same operation as in the above case is performed.

(F) Effect As detailed above, when a flowmeter is shared, each nozzle is provided with an independent counting circuit and display, which prevents other workers from accidentally removing the other nozzle. The current oil level display will not return to zero, and since the base of the hose and the nozzle storage case are placed on the same side as the display and display surface of each series, there is no chance of mistaking which nozzle the display belongs to. Even if the length of the hose is limited, the refueling range is widened, and the nozzle can be quickly attached to and removed from the case, making it possible to quickly refuel the nozzle.

[Brief explanation of the drawing]

FIG. 1 shows the internal structure of the oil supply system of the present invention, and FIG. 2 shows a block diagram of the electric circuit inside the control section. A...Control unit, _N1 , _N2 ...Nozzle, _S1 , _S2 ...
...Switch, 10...Flowmeter.

Claims (1)

[Scope of utility model registration request] A pump that pumps out oil and sends it to the flow meter, a motor that drives this pump, and the flow meter's secondary pipe line is branched into multiple branch pipes, with hoses and nozzles connected to the ends of each branch pipe. a pulse transmitter that outputs a number of pulse signals corresponding to the amount of oil measured by the flowmeter, a nozzle storage section in which each nozzle is held when not refueling, and a nozzle storage section that is arranged in association with the nozzle storage section, A device comprising a nozzle detection switch that outputs a signal depending on the presence or absence of a nozzle in a storage section, wherein each nozzle includes a counting circuit that counts the pulse signal, a display that displays the amount of oil supplied, and the nozzle switch. are arranged in series, and the display surfaces of the indicators belonging to the series and the base end of the hose are arranged on the same side of the device housing, and when one nozzle detection switch detects movement of the nozzle from the storage part. A refueling device comprising a control means that allows only a counting circuit associated with the nozzle to return to zero and allows the counting circuit to count the pulse signal.