JP3433798B2 - Refueling device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an oil supply device for supplying fuel oil to an automobile, and more particularly to an oil supply device in which an output shaft of a flow meter and an input shaft of a totalizer are connected by a connecting shaft.

[0002]

2. Description of the Related Art An oil supply device in which an output shaft of a flow meter and an input shaft of a totalizer are connected by a connecting shaft is disclosed by the applicant of the present invention in Japanese Patent Laid-Open No.
Proposed in No. 4-45296. As shown in FIG. 7, this oil supply device is provided with slits 44 and 45 on an output shaft 41 of a flow meter 40 and an input shaft 43 of a totalizer 42, and the slits 44 and 45 are planted at both ends of a connecting shaft 46. The pins 47 and 48 are engaged. Like this 4
Since the ends of 4, 45 are open, the pins 47, 48
May loosen and come off, and the flow rate of the flow meter 40 may not be transmitted to the totalizer 42. In addition, the pins 47 and 48 are intentionally removed from the gap between the slits 44 and 45, and the totalizer 4
Unauthorized refueling that does not add the refueling amount to 2 can be performed.
In order to prevent this, the pins 49 are covered with covers 49 and 50 and sealed to prevent the pins 47 and 48 from intentionally coming off. Since the covers 49 and 50 are used as described above, the number of parts is increased and the cost is increased. Also,
The maintenance inspection is a difficult work to be performed with the covers 49 and 50 removed.

[0003]

SUMMARY OF THE INVENTION The present invention has been proposed in view of the above-mentioned problems of the prior art, and the purpose of the present invention is to prevent the pins planted in the shafts of the flowmeter and the totalizer from coming off even if they are loose. It is an object of the present invention to provide an oil supply device in which a flow meter and a totalizer are connected to each other with a structure in which a pin cannot be removed, and which is easy to manufacture and maintain and does not increase the cost.

[0004]

According to the present invention, in a fueling apparatus in which an output shaft of a flow meter and an input shaft of a totalizer are connected by a connecting shaft, a pin is planted on the output shaft of the flow meter and the input shaft of the totalizer. A first connecting portion that engages with the output shaft of the flowmeter is provided at one end of the connecting shaft, and a second connecting portion that engages with the pin of the input shaft of the totalizer is provided at the other end. A hole into which the shaft is inserted and a slit connected to the hole are formed in both connecting portions, and the ends of the slit are closed.

A spherical convex portion is provided at the bottom of the hole of the first connecting portion, and an inverted bowl-shaped cover is provided around the slit, so that the output shaft of the flowmeter is convex. Rotation is smoothly transmitted by making point contact with the part, and the output shaft of the flowmeter is covered with a cover to prevent dust from entering.

Further, since the slits provided on the second connecting portion are out of phase with the slits provided on the first connecting portion by 90 degrees, the output shaft of the flow meter and the input of the totalizer are input. Rotation is transmitted smoothly even if the position is misaligned with the shaft.

Further, since the connecting shaft has a cross-shaped cross section, it does not twist even if it is relatively thin, and the rotation of the flow meter can be accurately transmitted to the totalizer.

Then, the first connecting portion of the connecting shaft is engaged with the output shaft of the flowmeter, the input shaft of the totalizer is engaged with the second connecting portion of the connecting shaft, and the housing of the totalizer and the oil supply device is engaged. Since and are sealed with a sealing tool, assembly is easy. Further, since the pin cannot be removed without removing the sealing tool, it is possible to prevent fraud.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. As shown in FIG. 1, an oil supply device 1 for supplying fuel oil to an automobile includes a lower housing 2 and an upper housing 4 held by columns 3 on the lower housing 2.
The lower housing 2 houses the refueling mechanism 5, and the upper housing 4 houses the control mechanism 6.

A pump 7 provided in the lower housing 2.
Is driven by a motor 8, a pump 7 pumps oil from a storage tank (not shown) through a pipe 9, the oil is measured by a flow meter 10, and is supplied from a refueling nozzle 12 to a car (not shown) via a hose 11. It has become.

A flow rate signal from a flow rate pulse transmitter 13 provided in the flow meter 10 is sent to a control device 14 provided in the upper housing 4 and displayed on a refueling amount display unit 15. The flow meter 10 and the totalizer 16 are connected via a connecting shaft 17, and the flow rate measured by the flow meter 10 is integrated and displayed on the totalizer 16.

Further, the refueling nozzle 12 is hooked on the nozzle hook 18, and the on / off signal of the switch 19 for detecting whether the refueling nozzle 12 is unhooked is transmitted to the control device 14, and the drive signal is transmitted from the control device 14 to the motor 8. It has become.

As shown in FIG. 2, the output shaft 2 of the flow meter 10
0 has a pin 21 planted therein, and the connecting shaft 17
The first connecting portion 22 of is engaged. A pin 24 is also implanted in the input shaft 23 of the totalizer 16, and the second connecting portion 25 of the connecting shaft 17 is engaged with the pin 24.

As shown in FIG. 3, a hole 26 into which the output shaft 20 of the flowmeter 10 is inserted and a slot 27 into which the pin 21 is inserted are formed in the first connecting portion 22 of the connecting shaft 17. The end of the slit 27 is closed. A spherical convex portion 28 is provided on the bottom of the hole 26, and the slit 27
An inverted bowl-shaped cover 29 is formed around the circumference of the.

As shown also in FIG. 4, a hole 30 into which the input shaft 23 of the totalizer 16 is inserted and a slit 31 into which the pin 24 is inserted are formed in the second connecting portion 25 of the connecting shaft 17. The ends of the slit 31 are closed. The slot 31 provided on the second connecting portion 25 is 90 degrees out of phase with the slot 27 provided on the first connecting portion 22.

As shown in FIG. 5, the shaft of the connecting shaft 17 is formed in a cross shape. Since it is formed in a cross shape in this way, it does not twist even if it is relatively thin, and the flowmeter 1
The rotation of 0 can be accurately transmitted to the totalizer 16.

A flow rate pulse transmitter 13 is connected to the output shaft 20 of the flow meter 10 via a gear 32, and a flow rate signal from the flow rate pulse transmitter 13 is sent to the control device 14. Further, reference numeral 33 is a coil spring for preventing excessive rotation due to inertia of the output shaft 20 and vibration due to vibration.

The connecting shaft 17 is preferably integrally formed of synthetic resin, but may be integrally formed by casting or die casting.

The output shaft 20 of the flowmeter 10 and the input shaft 23 of the totalizer 16 are connected by the connecting shaft 17 configured as described above.
To connect with, connect the output shaft 20 of the flowmeter 10 to the connecting shaft 1
7 is inserted into the input shaft 23 of the totalizer 16 through the hole 34 formed in the lower housing 2, and the second connection portion 25 is engaged with the input shaft 23. Is sealed to the lower housing 2 with the sealing tool 35.

In this connected state, the ends of the slits 27, 31 are closed, so that the pins 21,
Even if 24 is loose, it will not come off. Also, pins 21 and 2
Since 4 cannot be intentionally removed, it is possible to prevent unauthorized refueling. Further, since the output shaft 20 of the flowmeter 10 is covered with the cover 29, dust is prevented from entering, and the smooth rotation of the output shaft 20 can be maintained.

As shown in FIG. 6, since the slits 27 and 31 of the connecting shaft 17 are out of phase with each other by 90 degrees, the output shaft 20 of the flowmeter 10 and the input shaft 23 of the totalizer 16 are separated.
Even if the positions of and are deviated and the connecting shaft 17 is attached in a tilted manner, the rotation can be smoothly transmitted. Also,
Since the convex portion 28 is provided at the bottom of the hole 26, the input shaft 20 rotates in point contact with the convex portion 28, the bottom of the hole 26 is not scraped by the input shaft 20, and smooth rotation is achieved. Will be kept.

Next, the operation of the oil supply device 1 will be described. When the oil supply nozzle 12 is removed from the nozzle hook 18 and an ON signal is transmitted from the switch 19 to the control device 14, the control device 14 resets the oil supply amount indicator 15 to zero and outputs a drive signal to the motor 8. Receiving the drive signal, the motor 8 rotates to drive the pump 7, and the refueling nozzle 12 is inserted into the refueling port of the automobile to refuel. The oil from the oil storage tank is pumped up by the pump 7, measured by the flow meter 10, and discharged from the oil supply nozzle 12 through the hose 11. Then, the flow rate signal from the flow rate pulse transmitter 13 is sent to the control device 14, is displayed on the oil supply amount indicator 15, and the rotation of the output shaft 20 of the flow meter 10 is transmitted to the totalizer 16 via the connecting shaft 17.
The flow rate is integrated and displayed on the totalizer 16. When refueling is finished and the refueling nozzle 12 is hung on the nozzle hook 18, an off signal is transmitted from the switch 19 to the control device 14, the drive signal is deenergized, and the motor 8 is stopped.

[0023]

The oil supply device of the present invention has the following effects. 1) Even if the pins implanted on the shaft of the flow meter and totalizer are loosened, they will not come off, so the total flow rate will be displayed reliably on the totalizer. 2) Unauthorized refueling can be prevented because the pin cannot be intentionally removed. 3) Manufacturing and maintenance inspections are easy, and costs do not increase. 4) Since the output shaft of the flowmeter is in point contact with the convex portion of the connecting shaft, the rotation of the flowmeter can be smoothly transmitted to the totalizer.

5) Since the output shaft of the flowmeter is covered with a cover, dust does not enter and the output shaft of the flowmeter always rotates smoothly. 6) Since the slits are out of phase with each other by 90 degrees, the rotation is transmitted smoothly even if the output shaft of the flow meter and the input shaft of the totalizer are out of position. 7) Since the connecting shaft has a cross-shaped cross section, it does not twist even if it is relatively thin, and the rotation of the flowmeter can be accurately transmitted to the totalizer. 8) Since the pin cannot be removed unless the sealing tool is removed, fraud can be prevented.

[Brief description of drawings]

FIG. 1 is a front view of an oil supply device of the present invention.

FIG. 2 is a front view of a main part of the oil supply device of the present invention.

FIG. 3 is a perspective view of a first connecting portion of a connecting shaft.

FIG. 4 is a perspective view of a second connecting portion of the connecting shaft.

FIG. 5 is a sectional view of a connecting shaft.

FIG. 6 is a cross-sectional view illustrating the movement of the connecting shaft.

FIG. 7 is a front view of a main part of a conventional oil supply device.

[Explanation of symbols]

1. Refueling device 2 ... Lower housing 3 ... Support 4 ... Upper housing 5 ... Refueling mechanism 6 ... Control mechanism 10 ... Flowmeter 13 ... Flow rate pulse transmitter 16 ... Totalizer 17 ... Connection shaft 20 ... Output shaft 21, 24 ... pin 22 ... First connection part 23 ... Input shaft 25 ... Second connection part 26, 30 ... hole 27, 31 ... 28 ... Convex part 29 ... Cover 34 ... hole 35 ... Sealing tool

Claims (5)

(57) [Claims] 1. A fueling apparatus in which an output shaft of a flow meter and an input shaft of a totalizer are connected by a connecting shaft, and pins are implanted in the output shaft of the flow meter and the input shaft of the totalizer.
A first connecting portion that engages with the output shaft of the flow meter is provided at one end of the connecting shaft, and a second connecting portion that engages with the input shaft of the totalizer is provided at the other end, and both connecting portions are provided. Is an oil supply device characterized in that a hole into which a shaft is inserted and a slit into which a pin is inserted are formed, and an end portion of the slit is closed. 2. The oil supply device according to claim 1, wherein a spherical convex portion is provided on the bottom of the hole of the first connecting portion, and an inverted bowl-shaped cover is provided around the slit. 3. The slits provided in the second connecting portion have a phase of 9 with the slits provided in the first connecting portion.
The oil supply device according to claim 1, wherein the oil supply device is offset by 0 degrees. 4. The oil supply device according to claim 1, wherein the connecting shaft has a cross-shaped cross section. 5. The housing of the totalizer and the fueling device, wherein the first connecting portion of the connecting shaft is engaged with the output shaft of the flowmeter, and the second connecting portion of the connecting shaft is engaged with the input shaft of the totalizer. The oil supply device according to any one of claims 1 to 4, wherein and are sealed with a sealing tool.