JP4124039B2 - Gas lighter with safety device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a gas lighter having a built-in safety device that prevents a malfunction of an ignition lever that is likely to occur when the lighter is held upside down when refueling.
[0002]
[Prior art]
In the conventional gas lighter, the position of the shaft of the operating lever that opens and closes the valve mechanism can be moved between a first position where the valve mechanism cannot be opened and closed and a second position where the valve mechanism can be opened and closed. The release operation member is installed so as to be operable from the outside (see, for example, Patent Document 1).
[0003]
[Patent Document 1]
JP-A-10-325541 (page 4-5, FIG. 2-5).
[0004]
[Problems to be solved by the invention]
In a gas lighter with a push-in type ignition lever on the side, hold the lighter upside down for refueling, with the bottom facing up, and when refueling by inserting the cylinder nozzle into the inlet exposed on the bottom, There was a risk that ignition and combustion would occur by accidentally pushing the ignition lever with a hand holding the lighter.
[0005]
In order to prevent danger due to unexpected ignition and combustion during refueling, it is necessary to provide a safety device. The conventional lock-type safety device is intended to prevent the ignition operation when the lighter is not in use. However, since the lighter is always locked, the ignition lever is not used correctly when refueling by holding the lighter upside down. Although it prevents operation, there is an inconvenience that requires an unlocking operation every time it is used, and the unlocking operation member must be provided on the outer surface of the lighter. There is a problem that is difficult to adopt in a gas lighter having
[0006]
The object of the present invention is to automatically operate the stopper when the lighter is turned upside down to prevent the ignition lever from being pushed on the side of the lighter, and to automatically operate the stopper when the lighter is restored. Another object of the present invention is to provide a gas lighter with a built-in safety device that allows the ignition lever to be pushed in.
[0007]
[Means for Solving the Problems]
The present invention according to the above object includes a fuel tank having a fuel valve at the top and an injection valve at the bottom, a combustion device located on the fuel tank, and a piezoelectric ignition device located on the side of the fuel tank. A cam is provided on the side surface of the case of the piezoelectric ignition device so that the lower end of the ignition lever is pivotally supported, and the upper portion of the ignition lever is pressed by the ignition lever to operate both the fuel valve and the piezoelectric ignition device. In a gas lighter with a pivotable member, a vertically long guide groove is formed in the fuel tank wall under the cam member, and a stopper is movably accommodated in the guide groove by its own weight and is placed on the outer surface of the tank. In addition to projecting, the cam member is provided with a side plate whose length is overlapped with the upper end of the guide groove, and the contact of the side plate with the stopper prevents erroneous operation of the ignition lever. Yes and of, it is that the stopper is made of a sphere.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
In the figure, reference numeral 1 denotes a lighter case, which includes a fuel tank 2, an internal combustion type combustion device 3, and a piezoelectric ignition device 4. The fuel tank 2 has a fuel valve 5 at the top and an injection valve 6 at the bottom, and a fuel tube 7 is connected to the fuel valve 5 so that the firing device 3 can stand up and fall over the fuel tank 2. Bearings are provided. The combustion apparatus 3 is provided with a case cover plate 1a.
[0009]
A piezoelectric ignition device 4 is provided on the side of the fuel tank 2 with the movable member 4a facing upward, and an ignition that forms a part of the case 1 on the side surface of the case 1 where the piezoelectric ignition device 4 is located. A lever 8 is rotatably provided into the case with its lower end supported on the fuel tank side. A cam member for operating both the fuel valve 5 and the piezoelectric ignition device 4 is provided inside the upper portion of the ignition lever 8. 9, a free end is brought into contact with the movable member 4a, and a biasing spring is provided on the support member 10 on the fuel tank so as to be rotatably supported.
[0010]
A vertically long guide groove 11 having a required depth is recessed in the wall surface (front surface in the figure) of the fuel tank 2 below the cam member 9. A stopper 12 made of a metal sphere (may be a vertically long short column) is movably provided in the guide groove 11 so that a part of the stopper 12 protrudes from the outer surface of the tank and moves in the guide groove by its own weight. It is housed.
[0011]
Further, a side plate 9 a that also serves as a cam lever is integrally provided on the side surface of the cam member 9. The side plate 9a has such a length that its lower end overlaps with the upper end of the guide groove 11 and has a thickness that fits in a gap (not shown) between the case 1 and the fuel tank 2, and an ignition lever 8 on the outer edge thereof. The protrusion 8a formed on the inner edge of the contact is in contact.
[0012]
As shown in FIG. 2, such a cam member 9 has a stopper 12 positioned at the lower end of the guide groove 11 when the combustion device 3 is in a normal position and the obstruction in the rotation direction of the side plate 9a. When there is nothing, the urging spring 8 is turned as an urging spring by pushing the ignition lever 8, and the movable member 4a of the piezoelectric ignition device 4 is pushed down. Further, the opening and closing plate 13 of the fuel valve 5 is pushed down by the movable member 4a. Then, the fuel valve 5 is opened and the piezoelectric ignition device 3 is discharged.
[0013]
Further, in the ignition lever 8, the combustion device 3 connected to the arm 8b extending to the inner end by the pin 14 and the cut groove 15 is turned upright together with the case cover plate 1a with the support shaft 15 as a fulcrum. Along with this, the lead wire 4b of the piezoelectric ignition device 4 and the end of the electrode wire 3a are electrically connected, and discharge ignition occurs inside the standing combustion device 3.
[0014]
However, as shown in FIG. 3, when the lighter is upside down, the stopper 12 automatically falls and moves in the guide groove 11 from the lower end to the lower end due to its own weight, and protrudes to the outer surface of the tank. Since this part is located as an obstacle to obstruct the rotation direction of the side plate 9a, even if the ignition lever 8 is pushed into the case in this state, the cam member 9 is rotated as shown in FIG. Until it hits the stopper 12, it functions as a safety device that prevents the ignition lever 9 from being pushed further.
[0015]
Therefore, when the lighter is turned upside down for refueling, and the nozzle of the cylinder (not shown) is inserted and pushed into the injection valve 6 at the bottom which is gripped on both sides of the case and turned upward, the hand holding the lighter is forced. Even if the ignition lever 8 is pushed in, the side plate 9a hits the stopper 12 that has been dropped and moved in the reverse direction, and the cam member 9 stops rotating, and the ignition lever 9 completely rotates to the operating position. Therefore, the injection can be performed safely without ignition due to malfunction.
[0016]
Further, since the switching is based on the drop movement due to the dead weight of the stopper 9, there is no trouble of performing the switching operation of the stopper every time the fuel is replenished. Even a gas lighter can be refueled without danger. Furthermore, the structure is only required to provide the guide groove 11 and the stopper 12 on the wall surface of the fuel tank 2, and it is not necessary to provide an operating means outside the lighter.
[Brief description of the drawings]
FIG. 1 is a partially longitudinal front view of a lighter with a safety device according to the present invention at the time of ignition.
FIG. 2 is a partial longitudinal sectional front view when the lighter is turned upside down.
FIG. 3 is a partial longitudinal sectional front view showing a state in which the ignition lever is prevented from rotating by a stopper.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Case 2 Fuel tank 3 Combustion device 4 Piezoelectric ignition device 4a Movable member 5 Fuel valve 6 Injection valve 8 Ignition lever 9 Cam member 9a Side plate 11 Guide groove 12 Stopper

Claims (2)

A fuel tank having a fuel valve at the top and an injection valve at the bottom, a combustion device located on the fuel tank, and a piezoelectric ignition device located on the side of the fuel tank are provided in the case, and the case on the piezoelectric ignition device side An ignition lever is pivotally mounted on the side of the ignition lever so that the lower end thereof is pivotally supported. A cam member that is operated by the ignition lever to operate both the fuel valve and the piezoelectric ignition device is pivotally provided on the upper inner side of the ignition lever. In the installed gas lighter,
A vertically long guide groove is formed in the lower fuel tank wall surface of the cam member, and a stopper is movably accommodated by its own weight in the guide groove and protrudes from the tank outer surface, and the lower end portion of the cam member is a guide groove. A gas lighter with a safety device, characterized in that a side plate having a length that overlaps with the upper end portion of the gas is provided, and the side plate and the stopper are in contact to prevent erroneous operation of the ignition lever. 2. The gas lighter with a safety device according to claim 1, wherein the stopper is made of a sphere.

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