JP3054058B2 - Refueling tank full notification device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fuel tank, particularly a car used in a petroleum fan heater, a portable stove or the like.
The present invention relates to a fullness notification device provided in a cartridge tank.

[0002]

2. Description of the Related Art As disclosed in Japanese Patent Application No. 6-248784, filed by the present applicant, when the refueling of a refueling tank becomes full, a fuel tank of this type has been used. The buzzer sounds to inform the user, and the problem of soiling the floor due to the overflow of fuel oil and the like is surely prevented.

[0003]

By the way, in this conventional apparatus, the near full state is detected by a float and a magnet, and a signal from a lead switch which is closed by the approach of the magnet is inputted. Since it consisted of a microcomputer that sounds the buzzer for a certain period of time, the magnet fluctuates due to oil level fluctuations due to refueling near the full level, and the lead switch generates chattering in response to this.
There is a problem that the buzzer continues to sound for a certain time or more, or the notification and the stop are repeated in a short time, and the battery which is a power source is quickly consumed.

[0004]

The present invention focuses on this point and solves the above-mentioned drawbacks. In particular, the present invention comprises an oil amount detecting means for detecting an amount of fuel supplied to a refueling tank, Switch means which is opened and closed in conjunction with the detection of fullness by the detection means, and notification means for receiving a signal from the switch means and performing fullness notification for a predetermined time, wherein the notification means is provided for a predetermined time after the fullness notification. Is designed not to receive a signal from the switch means. Also, the melody-I
C and a piezoelectric buzzer.
It is a silent part in the song.

[0005]

When the amount of fuel supplied to the refueling tank 1 becomes nearly full, the oil amount detecting means 18 provided in the refueling tank 1 is provided.
Detects the oil amount and the switch means 25 is closed,
A signal is input to the notifying means 28, and the notifying means 28 emits a warning sound of a full amount for a predetermined time, and is set so as not to accept the next signal input for a predetermined time thereafter. Even if the switch means 25 chatters due to fluctuations in the oil level, the full amount notification can be made only once for a predetermined period of time, thereby preventing the conventional disadvantage.

If the notifying means 28 is composed of the melody IC 26 and the piezoelectric buzzer 27, general-purpose parts can be used, and
If the silent portion 33 in the melody of one tune that can be played for a predetermined time during which no signal is received after the full notification is made, the melody IC can be used as it is without any special setting or configuration, and it can be provided at low cost. Things.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an apparatus for informing a fuel tank of a fuel tank according to the present invention will be described with reference to an embodiment shown in the drawings. Reference numeral 1 denotes a cartridge-type refueling tank which is provided so as to be capable of entering and leaving an oil fan heater or the like.
An oil supply port 2 is provided on the upper side and fixed by a fixing plate 3.

Reference numeral 4 denotes an oil filler cap for closing the oil filler 2, which is provided with a valve device 5 which is opened when set to an appliance and a packing body 6 which is in close contact with the oil filler 2.
As a whole, it is fixed to a base 9 which can be raised and lowered by a reaction force of an elastic member 8 with a shaft support 7 at one end as a fulcrum.
Reference numeral 10 denotes a locking lot provided on the fixing plate 3, which locks the hook fitting 11 provided on the base 9 to close the oil filler port 2 and pulls the operation button 12 protruding outward. The lock is released, and the base 9 is automatically erected to open the fuel filler 2.

Reference numeral 13 denotes an oil meter provided on a side wall of the oil supply tank 1 on the operation button 12 side, and a display window 14 formed by covering the outer periphery of a transparent synthetic resin with a packing (not shown); And a cover 15 which covers the oil level from the transparent display window 14 to expose a certain range of 75 to 90% of the tank capacity.

Reference numeral 16 denotes a full-amount notification device provided on the same wall as the oil meter 13 at a distance from the same, and is provided so as to protrude inward from the oil tank 1 through an opening 17 formed in the side wall of the oil tank 1. Oil amount detecting means 18 for detecting the amount, and oil amount detecting means 18
And a flat, oval-shaped main body 21 fixed at four places with screws 20 via packing 19 so as to close the opening 17 on the side wall of the fuel tank 1. The oil amount detecting means 18 is formed of a synthetic resin. One end is integrally formed with a cylindrical float 22 which floats on the oil surface and moves up and down according to the amount of oil, and the other end is provided with a magnet 23. 24 is provided rotatably around a fulcrum.

Further, in the main body 21, a switch means 25 comprising a lead switch which is opposed to the magnet 23 at the full position and is closed, and a signal is inputted by closing the switch means 25, and about one music is inputted. A notification means 28 comprising a melody IC 26 playing a melody of 10 seconds and a piezoelectric buzzer 27, a printed board 29 constituting these electric circuits, and
It is a power source for operating each electric component, and the button battery 31 covered with the easily removable lid 30 is stacked and stored compactly.

In the melody IC 26, as shown in FIG. 8, the melody part 32 for playing the sound "pi, pi, pi, pi" five times is made for about 5 seconds, and then the silence part 33 is made for about 5 seconds. A melody of about 10 seconds in total is set as one song, and the next signal input is not accepted until this one song ends.

Further, the notifying means 28 may be constituted by a one-chip microcomputer and a buzzer, that is, for notifying the full capacity for a predetermined time, here, about 5 seconds, and thereafter, the switch means 25 for about 5 seconds. What is necessary is just to program the microcomputer in advance so as not to receive the signal even if it is input.

The main body 21 itself has a concave storage section 34 facing the magnet 23 and in contact with fuel oil, and a printed board 29.
And the inner holding portion 35 holding the piezoelectric buzzer 27 and the button battery 31 is formed of a synthetic resin of a non-magnetic material to which the magnet 23 does not stick, while the cover 36 exposed to the outside of the refueling tank 1 is Except for the above-mentioned lid 30 part, it is formed of a strong metallic material.

At a position facing the piezoelectric buzzer 27 of the holding portion 35, a φ3 sound emission hole 38 for emitting a buzzer sound is formed at the center through an acoustic space 37 having a small volume. Further, a portion of the outermost cover body 36 facing the piezoelectric buzzer 27 has a cover hole 39 of φ3 for sound emission.
Individually formed.

The full-amount notifying device 16 is mounted so as to notify the full amount when the oil level display by the oil amount meter 13 reaches a substantially middle full position. Reference numeral 40 denotes a supply pipe such as a hose pump for supplying fuel.

Next, the operation of this embodiment will be described. When the fuel in the refueling tank 1 is exhausted and replenished, the operation button 12 is first pulled to open the refueling port 2 with one touch, and then the refueling is performed by inserting the supply pipe 40 into the refueling port 2. Then, when the oil amount in the oil tank 1 reaches 75% of the internal capacity, the oil level display by the oil meter 13 is started, that is, the oil level in the oil tank 1 is displayed on the display window 14 as it is. This allows the user to know the current amount of oil.

Further replenishment proceeds, and an oil meter 13 shown in FIGS.
Is reached, the oil amount detecting means 18 rotates according to the oil amount, the magnet 23 faces the switch means 25, and the switch means 25 is closed. Sounds a warning sound for about 5 seconds to notify that the battery is full, and the user only needs to stop replenishing immediately upon hearing this.

Accordingly, the provision of the two full indications of the oil level gauge 13 which appeals to the sight and the fullness notification device 16 which appeals to the auditory sense allows the full state to be surely known, especially in dark places and noise. Even when replenishing in intense places, it is possible to know the full capacity by utilizing the advantages of each display and notification means, and there is no problem such as fuel overflowing and soiling the floor in any state, and always use it with peace of mind It can be used and is easily used by visually impaired or hearing impaired persons.

On the other hand, both the oil gauge 13 and the full-amount notifying device 16 display the empty amount state due to their configuration. In particular, the empty-amount notification by the full-amount notifying device 16 is performed for about 5 seconds.
Even if the refueling tank 1 is stored in the appliance, the user can easily know the empty state, and can use the full amount informing device 16 without providing any special empty amount notification. It is convenient.

The alarm sound of the full-amount notifying device 16 receives a signal input by closing the switch means 25 and notifies the notifying means 28.
Of the melody IC 26 and the piezoelectric buzzer 27
The melody part 32 "pi, pi, pi" is played for about 5 seconds, and the silent section 33 is played for about 5 seconds after the notification.
The input signal from the switch means 25 during this period is not accepted, so that the chattering of the switch means 25 due to the fluctuation of the oil level near the full level causes an abnormal alarm sound or quick consumption of the battery. Is surely prevented.

Special setting is made by forming the notifying means 28 with the melody IC 26 and the piezoelectric buzzer 27 and setting a predetermined time after notifying that no signal is received as the silent portion 33 in the melody. General-purpose melody-IC2
6 can be used and can be provided at extremely low cost.

[0023]

In summary, the present invention provides an oil amount detecting means for detecting an amount of fuel oil supplied to an oil supply tank, a switch means which is opened and closed in conjunction with the detection of the full amount by the oil amount detecting means, And a notifying means for inputting a signal from the controller to perform full-time notification for a predetermined time, and the notification means does not receive a signal from the switch means for a predetermined time after the full-value notification. In this way, it is possible to reliably prevent a failure caused by chattering of the switch means caused by the fluctuation of the oil level, and to suppress the consumption of the battery as much as possible, thereby realizing a highly reliable full amount notification. Also, by making the notification means by a melody IC and a piezoelectric buzzer,
This has the effect that general-purpose components can be provided at low cost without using special settings or components.

[Brief description of the drawings]

FIG. 1 is a perspective view of a main part of a fuel tank provided with an embodiment of the present invention.

FIG. 2 is a perspective view of a main part showing the fuel supply port opened state.

FIG. 3 is an explanatory diagram showing a display state on the oil meter.

FIG. 4 is an explanatory diagram showing a notification state in the full amount notification device in the same state as in FIG. 3;

FIG. 5 is an electric circuit diagram of the fullness notifying device.

FIG. 6 is a sectional view of the main part.

FIG. 7 is a front view of the main part.

FIG. 8 is an explanatory diagram of a melody of the fullness notification device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Refueling tank 16 Fullness notification device 18 Oil amount detection means 25 Switch means 26 Melody IC 27 Piezoelectric buzzer 28 Notification means

Continuation of front page (56) References JP-A-5-248627 (JP, A) JP-A-61-101712 (JP, A) JP-A-55-108289 (JP, U) JP-A-5-25235 (JP, A) , U) (58) Field surveyed (Int. Cl. ⁷ , DB name) F23K 5/14 505

Claims (2)

(57) [Claims] 1. An oil amount detecting means for detecting an amount of fuel oil supplied to a refueling tank, a switch means which is opened and closed in conjunction with detection of a full amount by the oil amount detecting means, and a signal from the switch means being inputted. An informing means for performing a full time notification for a predetermined time, wherein the notifying means does not receive a signal from the switch means for a predetermined time after the full amount notification. 2. The refueling tank according to claim 1, wherein the notifying means comprises a melody IC and a piezoelectric buzzer, and a predetermined time after the full amount notification is a silent portion in one music. Full amount notification device.