JPH0236477B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a refueling device installed at a gas station, for example.

When refueling, a refueling device at a gas station, etc., pulls a valve opening/closing lever provided on the refueling nozzle and hooks the lever onto a holding mechanism, such as a latch, to hold the valve in the open state. Once this is completed, remove the latch from the lever, close the valve, and then hang it on the nozzle hook.When you hang the refueling nozzle on the nozzle hook, the switch on the nozzle hook turns off and the fuel pump automatically stops. It's becoming like that.

By the way, if (a) the main valve closes after filling the predetermined amount during preset lubrication, or (b) the pump motor stops due to a power outage etc. during lubrication, the lever should be moved. Even if the valve of the refueling nozzle is opened by pulling the lever, oil will not be discharged, and for this reason, the lever may be latched and the valve of the refueling nozzle may be left open and hooked onto the nozzle hook. The above-mentioned situation is particularly likely to occur when preset refueling is performed at a self-service refueling station where customers themselves refuel.

If the refueling nozzle is hung on the nozzle hook with the lever latched and the valve left open,
When the next customer removes the refueling nozzle from the nozzle hook to refuel, oil will suddenly be spewed out, which is extremely dangerous.

In Japanese Patent Application Laid-Open No. 55-38258, the present applicant
To provide a refueling device configured by combining a locking piece, a notch, and a locking part so that when a refueling nozzle is hung on a nozzle hook, a lever automatically returns to its original position. However, in this oil supply device, depending on the relative position of the locking piece and the locking portion, the lever may not be released from the locked state. Therefore, it was insufficient to prevent unexpected oil discharge as described above.

The present invention has been proposed in view of the problems of the prior art described above, and provides a refueling device in which when the refueling nozzle is hung on the nozzle hook, the holding of the lever is reliably released and the valve of the refueling nozzle is reliably closed. The purpose is to provide

The refueling device of the present invention includes a refueling nozzle that is provided with a lever holding means that holds the lever in the pulled position when the lever of the refueling nozzle is pulled, and a control switch of the refueling pump that is operated by engaging and disconnecting the nozzle. In a refueling device equipped with a nozzle hook having an actuating element, a protrusion is provided at the lower end of a lever guard of the refueling nozzle, and the lever holding means is pivotally supported by the lever guard and biased by a spring in a direction to be removed from the lever. and an opposite side of the lever holding part includes a latch protruding from the nozzle guard, an actuator of the nozzle hook is disposed in a position to engage the latch, and the nozzle hook includes a latch with the actuator and the latch. A recess is formed to hold the nozzle in a position into which the protrusion of the refueling nozzle can be inserted when the protrusion of the refueling nozzle is moved so that the latch engages and operates, and the latch is rotated. A sloping portion is formed at the end of the lower part of the nozzle hook to allow for.

According to the present invention having the above configuration, when the refueling nozzle is hung on the nozzle hook, the lever holding release means automatically releases the lever from being held by the lever holding means and the operation of the refueling pump is stopped. , a situation in which oil is suddenly discharged from the oil supply nozzle due to forgetting to return the lever is reliably avoided.

Here, the recess formed in the nozzle hook is provided at a position where the protrusion of the refueling nozzle can be inserted when the protrusion of the refueling nozzle is moved so that the actuator and the latch are engaged and actuated. Because there are
When the refueling nozzle is hooked onto the nozzle hook by inserting the protrusion of the refueling nozzle into the recess, the actuator and latch are necessarily engaged to be in the operating state. Then, the actuator is pushed by the latch and rotated to actuate the oil supply pump control switch and stop the operation of the pump, while the latch is also pushed by the actuator and rotated in the direction away from the lever. do. As a result, the operation of the fuel pump is reliably stopped, and the holding of the lever by the lever holding means is also reliably released, thereby closing the valve of the fuel nozzle.

That is, according to the refueling device of the present invention, in order to hang the refueling nozzle on the nozzle hook, the protrusion of the refueling nozzle must be inserted into the recess formed in the nozzle hook; The actuator and latch are engaged to stop the operation of the fuel pump, and the latch is released from the lever to close the valve of the fuel nozzle.

Embodiments of the present invention will be described below with reference to the drawings.

First, an example of a preset oil supply system in which the present invention can be suitably implemented will be described with reference to FIG.

In FIG. 1, the oil supply device, which is generally indicated by 1, includes a pump 3 that sucks up oil from a tank 2, and the pump 3 is driven by a motor 4. The oil sucked up by the pump 3 flows into a hose 7 via a flow meter 5 and a main valve 6, and is discharged from an oil supply nozzle 8 provided at the tip of the hose 7. The flow meter 5 is a pulse transmitter 9
The flow meter 1 converts the flow rate measured by the flow meter 5 into a pulse signal and displays the amount of oil supplied via the control device 10.
Display on 1. A nozzle hook 12 is provided on the upper side of the oil supply device 1, and the nozzle hook 12 is provided with a nozzle switch 13. A preset device 14 is also provided, so that a predetermined oil supply amount can be preset.

When a preset amount is determined by the preset device 14 during refueling, the signal is transmitted to the control device 10 and stored. Hook the refueling nozzle 8 to the nozzle 12
When the nozzle switch 13 is removed, the nozzle switch 13 is turned on, the motor 4 and pump 3 are driven by the signal from the control device 10, the main valve 6 is opened, and the indicator 11 returns to zero. When the lever of the refueling nozzle 8 is pulled, the valve of the refueling nozzle 8 opens, and the oil sucked up from the tank 2 by the pump 3 is discharged from the refueling nozzle 8 through the flow meter 5, the main valve 6, and the hose 7. Refill the fuel tank. The flow rate measured by the flow meter 5 is converted into a pulse signal by a pulse transmitter 9 and sent to a control device 10.
is displayed on the display meter 11. When the preset amount is reached, the main valve 6 is closed by a signal from the control device 10, and the refueling nozzle 8 is closed to the nozzle hook 12.
When the switch is turned on, the nozzle switch 13 is turned off, the motor 4 is stopped, and refueling is completed.

In such a refueling device, the lever of the refueling nozzle 8 is held by a latch as described above during refueling to facilitate refueling, but the customer who has finished refueling can refuel without releasing the lever from the latch. If you hang the nozzle 8 on the nozzle hook 12,
The next customer then hooks the refueling nozzle 8 to the nozzle 12.
When I try to refuel after removing it from the nozzle switch 1
3 is turned on, the motor 4 and pump 3 are driven, the main valve 6 is opened, and oil is suddenly discharged from the oil supply nozzle 8.

The present invention has been made in order to eliminate such inconveniences, and embodiments of the present invention will be described below with reference to FIGS. 2 to 6.

In FIG. 2 and FIG. 3, the refueling nozzle 8 has a valve (not shown) provided in the grip of the refueling nozzle 8.
It is equipped with a lever 15 that opens and closes the lever 15.
is biased by a valve spring (not shown) to the position shown in FIG. 2 when no force is applied to the lever 15. When the lever 15 is in the position shown in FIG. 2, the valve of the refueling nozzle 8 is closed. When refueling, hook the refueling nozzle 8 to the nozzle hook 12
When the lever 15 is pulled from the position shown in FIG. 2 to the position shown in FIG. 3, the valve of the refueling nozzle 8 opens, and the lever 15 is held in the position shown in FIG. valve remains open.

In the illustrated example, a latch 16 is used as the holding mechanism, and the latch 16 is rotatably supported by a shaft 18 on the guard portion 17 of the refueling nozzle 8, and is rotated by a spring 19 as shown in FIGS. Forced clockwise. Therefore, when refueling, the lever 15 is pulled and the latch 16 is rotated against the spring 19 to engage the lever 15, so that the lever 15 is held by the latch 16 in the position shown in FIG. The side of the latch 16 opposite to the side on which the teeth are formed is bent upward to form a push portion 16a.

Next, nozzle hooking will be explained with reference to FIGS. 4 to 6 in addition to FIGS. 2 and 3. The nozzle hook 12 has a groove 20 on its relatively distal side that becomes higher toward the proximal side and is slightly wider than the width of the latch 16 described above, and a protrusion 21 on the proximal side that projects downward from the guard 17. A recess 22 into which the holder is inserted is formed. Therefore, a convex portion 23 is formed between the groove 20 and the concave portion 22. The details will be explained with reference to its operation, but in the embodiment shown in FIG. 2 in which the refueling nozzle 8 is hung on the nozzle hook 12, the lower surface of the latch 16 contacts the groove 20, and the protrusion 21 of the guard 17 enters the recess 22.

The nozzle switch 13 is fixed to the back side of a member 25 that is provided with a nozzle hook 12 and a nozzle hood 24 and is fixed to the casing of the device 1.
It is equipped with a rotating lever 26 that turns the switch on and off. The pivot lever 26 is arranged to be in the on state shown in FIG. 3 when no force is applied. An actuator 27 is provided that moves the rotary lever 26 to turn the switch on and off. The actuator 27 has an L-shape and is rotatably supported on the member 25 by a shaft 28, and is supported by a spring (not shown).
is biased counterclockwise in FIGS. 2 and 3. This actuator 27 is the latch 1
6 and rotates clockwise from the position shown in FIG. 3 to the position shown in FIG. 2, the rotating lever 26 also rotates from the position shown in FIG. 3 to the position shown in FIG. 13 is turned off.

When refueling, grasp the grip of the refueling nozzle 8 and remove the refueling nozzle 8 from the nozzle hook 12. Then, the actuator 27 of the switch 13 is rotated by the spring provided therefrom from the position shown in FIG. 2 to the position shown in FIG. 3, and the switch 13 is turned on. When the switch 13 is turned on, the pump motors 3 and 4 shown in FIG. 1 operate, the main valve 6 opens, and the indicator 11 returns to zero, making it possible to refuel. When the fuel nozzle 8 is inserted into, for example, a fuel tank of an automobile and the lever 15 is pulled, the valve of the fuel nozzle 8 opens and oil is discharged from the fuel nozzle 8. At this time, if the latch 16 is rotated against the spring 19 and engaged with the lever 15, the lever 15 will be held by the latch 16, so that even if the lever 15 is released, the lever 15 will not return to its original position.

When the preset amount of oil has been supplied, the main valve 6 is closed by a signal from the control device 10 shown in FIG. 1, and oil is no longer discharged from the oil supply nozzle 8. When refueling is completed, when the lever 15 of the refueling nozzle 8 is slightly pulled, the engagement between the lever and the latch 16 is released, and the latch 16 is rotated clockwise by the spring 19. Then, after returning the lever 15 and closing the valve, the nozzle hook 12 is hooked again.
If you try to hook the nozzle hook without releasing the engagement with the latch 8, that is, with the valve of the refueling nozzle 8 open, the pushing part 16a of the latch 16 will come into contact with the actuator 27,
The latch 16 is rotated from the state shown in FIG. 3 to the state shown in FIG. 2, and the latch 16 is disengaged from the lever 15. At this time, since the latch 16 is inserted into the inclined groove 20 of the nozzle hook 12, rotation is not prevented by the nozzle hook. As a result, the lever 15 returns from the state shown in FIG. 3 to the state shown in FIG. 2 due to the spring force of the spring provided thereon, and the valve of the refueling nozzle 8 closes. Also, guard part 1
The protrusion 21 protruding from the nozzle hook 12 enters the recess 22 of the nozzle hook 12, and the refueling nozzle is locked so that it does not fall from the nozzle hook. and refueling nozzle 8
The actuator 27 is pushed by the guard part 17 of the actuator 2.
7 rotates from the state shown in FIG. 3 to the state shown in FIG. 2, the lever 26 of the switch 13 turns from the state shown in FIG. 3 to the state shown in FIG. 2, turning off the switch 13 and stopping the motor 4. .

As explained above, according to the present invention, the refueling nozzle is provided with a lever holding means that holds the lever in the pulled position when the lever of the refueling nozzle is pulled, and the refueling pump In a refueling device equipped with a nozzle hook having an actuator for operating a control switch, the nozzle hook is engaged with the actuator and the latch so that the respective actuators are actuated when the protrusion of the refueling nozzle moves. A recess is formed in a position where the protrusion can be inserted, so when the protrusion is inserted into the recess to hang the refueling nozzle on the nozzle hook, the actuator and latch press against each other, stopping the operation of the refueling pump. The lever is then released from the latch to close the fuel nozzle valve.

Accordingly, when the refueling nozzle is hooked to the nozzle hook, the control switch of the refueling pump is activated to stop the operation of the pump, and the lever is released from being held by the lever holding means and the valve of the refueling nozzle is closed. This ensures that the situation where oil is suddenly discharged from the oil supply nozzle due to forgetting to return the lever is reliably avoided.

[Brief explanation of drawings]

FIG. 1 is a piping and wiring diagram of a suitable oil supply device for carrying out the present invention, and FIGS. 2 and 3 are side views, partially in cross section, of a oil supply nozzle and a nozzle hanging part according to an embodiment of the present invention. FIG. 2 shows a state in which the refueling nozzle is hung on the nozzle hook, and FIG. 3 shows a state in which the refueling nozzle is removed from the nozzle hook. Fig. 4 is a plan view of the nozzle hook seen from above in Figs. 2 and 3, Fig. 5 is a plan view of the actuator seen from the right, and Fig. 6 is a plan view of the same lever and latch seen from the right. It is a diagram. 1... Oil supply device, 2... Tank, 3... Pump, 4... Motor, 5... Flow meter, 6... Main valve,
7...Hose, 8...Refueling nozzle, 9...Pulse transmitter, 10...Control device, 11...Display meter, 1
2... Nozzle hook, 13... Nozzle switch, 1
4...Preset device, 15...Lever, 16...
...Latch, 20...Slanted groove, 21...Protrusion, 22
... recess, 24 ... nozzle hood, 26 ... switch lever, 27 ... actuator.

Claims (1)

[Claims] 1. A refueling nozzle equipped with a lever holding means that holds the lever in the pulled position when the lever of the refueling nozzle is pulled, and an actuator that operates a control switch of the refueling pump by engaging and disconnecting the nozzle. In the refueling device equipped with a nozzle hook, a protrusion is provided at the lower end of the lever guard of the refueling nozzle, and the lever holding means is pivotally supported by the lever guard and biased by a spring in a direction to be removed from the lever. an opposite side including a latch projecting from the nozzle guard, an actuator of the nozzle hook disposed in engagement with the latch; A recess is formed to hold the nozzle in a position where the protrusion of the refueling nozzle can be inserted when the protrusion of the refueling nozzle moves so that the latch can be rotated. A refueling device characterized in that a sloped portion is formed at the end of the lower part of the hook.