JPH0443717Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention relates to a gas lighter, particularly a gas lighter that is resistant to wind and completely burns a mixture of fuel gas and air in the combustion cylinder, and is used to obtain the mixed gas. This invention relates to a gas lighter that prevents the air intake hole for sucking air from being clogged with dust and the like, thereby achieving stable ignition.

[Conventional technology]

A conventional gas lighter will be explained using FIGS. 4 and 5. In the conventional gas lighter shown in these figures, the mechanism for opening the valve to blow out fuel gas from the fuel tank and the mechanism for operating the high voltage generation mechanism are the same as those of general ones, so detailed explanations will be omitted. do.

Fig. 4 is a partially cutaway perspective view showing the burner part of a conventional gas lighter, and Fig. 5 is a plan view of the flame hole. This is a mixing tube that mixes the supplied fuel gas and air. A filter 10 is provided at the inlet of the mixing tube 9, and a nozzle plate 11 is provided at the tip of the filter 10. This nozzle plate 11 is provided with fine nozzle holes 12 for constricting the ejected gas and increasing the flow velocity, and from the nozzle holes 12, the fuel gas is constricted to a small diameter and ejected at a high flow velocity. ing. A mixing passage 13 is formed inside the mixing tube 9, which serves as a passage for the fuel gas that has passed through the nozzle hole 12, and an intake hole 14 is provided in the middle of this mixing passage 13. Air is sucked into the mixing passage 13 from this intake hole 14 under negative pressure caused by the passage of the fuel gas with an increased flow rate, thereby producing a mixed gas suitable for complete combustion.

A diffuser 15 is attached to the upper end of the mixing tube 9, and the diffusion path 1 of the mixing tube 9 is controlled by the diffuser 15.
A diffusion chamber 29 is formed which communicates with 3. The diffuser 15 has a conical body 17 with its apex facing downward formed at the upper end of a cylindrical body 16, and a cross-shaped diffusion hole 18 is formed across the conical body 17 at the upper end of the cylindrical body 16. It has a structure in which a hole of an appropriate size is opened in advance, and is surrounded and held by the large-diameter tip 49 of the mixing tube 9.

Further, the base end of the combustion tube 19 is fitted onto the outer surface of the distal end portion 49 of the mixing tube 9 surrounding the diffuser 15 . The tip of a discharge electrode 20 held by a holder 20a formed of a non-conductive heat-resistant material faces approximately at the center of the combustion tube 19.
A high voltage is supplied to the discharge electrode 20 from a high voltage generation mechanism (not shown).

Furthermore, the reference numeral 28 in the figure is a net made of nichrome wire or the like, and is attached to the opening of the combustion tube 19. In this net 28, the flame obtained in the combustion tube 19 has a bluish-white color due to complete combustion, and it is difficult to visually confirm the flame in broad daylight.
It is used to confirm the presence of flame by making it red hot.

In this conventional gas lighter, when the cap is opened, the valve opening/closing mechanism of the fuel tank is actuated to eject fuel gas from the tank.The fuel gas is throttled through the nozzle hole 12, and the flow rate is increased to increase the flow rate into the mixing path. It is ejected into 13. Air is sucked in from the intake hole 14 by the negative pressure generated in the surroundings due to this rapid flow of fuel gas. When air is sucked in through the intake hole 14, the air is mixed with the fuel gas from the nozzle hole 12 in the mixing passage 13 to produce a mixed gas effective for complete combustion. This mixed gas is mixed in the mixing path 1.
3 into the diffusion chamber 29, collides with the cone 17 of the diffuser 15, bends, and is diffused while decelerating.
It enters into the combustion cylinder 19 through the diffusion hole 18. Combustion tube 19
A portion of the mixed gas that has entered the interior collides with the inner wall of the combustion tube 19, and is further decelerated and diffused. After being ignited, a state is reached where complete combustion can continue inside the combustion tube 19. It becomes air mixed gas.

Here, by further operating the cap from this state, the high voltage generation mechanism is moved and high voltage is supplied to the discharge electrode 20.
and the inner wall of the combustion tube 19 or the diffuser 1 which serves as the power receiving electrode.
A discharge spark is created between the tip portion of the combustion tube 5 and the mixed gas in the combustion tube 19 is ignited. The mixed gas is a sufficient mixture of fuel gas and air, so
Complete combustion results in a bluish-white flame, and since the combustion takes place inside the combustion tube 19, it is not affected by wind and the flame is not blown out.

[Problem that the invention attempts to solve]

By the way, in the conventional gas lighter described above, the fuel gas is squeezed into a small diameter through the nozzle hole 12,
Air intake hole 1 increases the flow rate and uses the negative pressure generated around it.
The mechanism is to generate a mixed gas suitable for complete combustion by drawing in the air through the intake hole 14, but this intake hole 14 is always open and requires conditions that allow outside air to easily flow in. When the lighter is placed in a bag, dust may enter the intake hole 14 from the outside through an air circulation hole provided in the outer case of the lighter body, causing a risk of ignition failure.

Therefore, the present invention was created by focusing on the problems of the conventional technology, and solves these problems by blocking the air circulation holes provided in the case when not in use, and opening them only when in use. As a thing,
To provide a gas lighter that can prevent dust from entering an intake hole 14, prevent ignition failure, and prevent the flame from being blown out by the wind.

[Means for solving problems]

In order to achieve this purpose, the gas lighter according to the present invention allows the fuel gas ejected from the fuel tank to pass through the nozzle hole and increase the flow velocity, thereby drawing air through the intake hole using the negative pressure generated to completely combust the gas. A mixing tube that produces a mixed gas of fuel gas and air that can be used for air, a diffuser that is connected to the mixing tube and slows down the flow rate of the mixed gas and diffuses it, and a diffuser that ignites the mixed gas that has passed through the diffuser. , and a combustion tube for continuous combustion.The mixed gas in the combustion tube is ignited by rotating the cap, which activates the high voltage generation mechanism, and the resulting high voltage is applied to the combustion tube. In a gas lighter that is operated by sending air to a discharge electrode facing the air, a shutter member having a slit formed therein for causing air to flow is arranged around the mixing tube provided with the intake hole, and the shutter member is arranged to generate the high voltage. The shutter member shall be slid by being engaged with the working part of the pivot plate which is linked to the rotation of the cap which forms the pressing part for operating the mechanism, and the slit of the shutter member shall be formed in the case during use. It is characterized by communicating with the slit for letting air in by matching the opening/closing conditions.

[Effect]

As described above, the gas lighter according to the present invention has a shutter member with a slit formed around a mixing pipe provided with an intake hole, and this shutter member slides as the cap is operated during use and is attached to the case. When not in use, this shutter member closes the slit provided in the case and blocks the intake hole, which prevents dust from entering the intake hole and prevents ignition failure. This can be prevented.

〔Example〕

Next, an example of implementation of the present invention will be described in detail with reference to FIGS. 1 to 3. Note that the same parts as in the conventional example are given the same reference numerals and detailed explanations are omitted.

In FIGS. 1 to 3, 30 indicates a cap, and this cap 30 has an insertion hole near the lower end of a pair of pivot plates 31, 31, which are integrally hung approximately in the center of both side edges of the cap. It rotates about a pivot shaft 33 that is communicated with 32, 32 as a fulcrum. Also, this pivot plate 3
1 and 31 are respectively formed with arm-shaped pressing parts 34 and 34 that press and activate the high voltage generation mechanism 21, and furthermore, arm-shaped pressing parts 34 and 34 are formed at the lower ends of the pivot plates 31 and 31 in the opposite direction to the pressing parts 34 and 34. Working parts 35, 35 for operating a shutter member, which will be described later, are extended.

Further, in the figure, reference numeral 36 denotes a shatter member disposed around the mixing tube 9 provided with the intake hole 14. A plurality of slits 37, 37, . . . are formed at predetermined pitches corresponding to the rotation angles of the working parts 35, 35. Also,
Both rear end edges of this shutter member 36 are bent inward at approximately right angles, and a working portion 3 extending from the pivot plates 31, 31 is provided approximately in the middle of each of the bent portions.
5 and 35 are engaged, and the lower end thereof is formed to engage with the lower surface of the valve mechanism 50 connected to the vinyl tube 6 that connects the mixing pipe 9 and the fuel tank 2. Engagement plates 51, 51 for operating the mechanism 50 are formed.

Further, in the gas lighter according to the present invention, the case 1 has slits 37, 37 of the shutter member 36...
Similar pitch slits 39, 39...
...is being formed. This slit 37, 37...
... and 39, 39... are when not in use, that is, cap 3
When the cap 30 is not rotated, the slits are positioned such that their positions are closed to each other, and when the cap 30 is rotated during use, the working portion 35 of the pivot plate 31 is engaged. Notch 38,
By vertically moving the shutter member 36 up and down via the shaft 38, the working parts 35, 35 of the pivot plates 31, 31
The slits 37, 37 correspond to the rotation angle of
. . . are set to match the slits 39, 39 . . . provided in the case, so that air passage windows are formed.

Further, 40 in the figure is an upper cover, and this upper cover 40 has the pivot shaft 33 inserted into the insertion hole 41 at the lower edge.
is inserted and held. This upper cover 4
Pivot plates 31, 31 are inserted into both edges of the upper surface of 0,
Grooves 42, 42 that are movable are formed. still,
In the figure, reference numeral 43 indicates a combustion flame hole formed in the upper cover 40. In this embodiment having such a configuration, when not in use, that is, when the cap 30 closes the combustion flame hole 43, the shutter member 36 is positioned downward, so that the notch 38 is formed in the working portions 35, 35. ，
38 and is pressed downward, and the slits 37, 37, .
Case 1 is located between each pitch of 9, 39...
The air circulation with the outside is cut off. In addition, when in use, that is, when the cap 30 is rotated, the working parts 35, 3 of the pivot plates 31, 31
5 is engaged with, and the shutter member 36 is vertically moved upward. Due to this movement, the slits 37, 37... of the shutter member 36 and the slits 39, 39 of the case 1,
39... communicate with each other, the outside flows into the inside, and the air sucked in from the intake hole 14 is ensured. Furthermore, when the cap 30 is operated from this state, the pressing parts 34, 34 of the pivot plates 31, 31 press the high voltage generation mechanism 21 to operate, supplying high voltage to the discharge electrode 20, and The mixed gas in the combustion tube 19 is ignited in the same manner as in FIGS. 4 and 5. It goes without saying that the number of the slits 37, 37, . . . of the shutter member 36 and the slits 39, 39, .

[Effect of idea]

As mentioned above, according to the gas lighter according to the present invention, each slit communicates with the air to flow in only when in use, and is cut off from the outside when not in use, so there is no possibility of dust entering the intake hole and clogging it. It is a gas lighter that is resistant to wind and can prevent ignition failure.

[Brief explanation of the drawing]

Figure 1 is a sectional view of the main parts of a gas lighter implementing the present invention, Figure 2 is an exploded perspective view with the case removed, Figure 3 is a perspective view of the gas lighter with the case separated, and Figure 4 is the conventional gas lighter. FIG. 5 is a partially cutaway perspective view showing the example burner portion, and FIG. 5 is a plan view of the flame hole. 1... Case, 2... Fuel tank, 9... Mixing pipe, 12... Nozzle hole, 14... Intake hole, 15...
... Diffuser, 19... Combustion tube, 20... Discharge electrode,
21... High voltage generation mechanism, 28... Net, 30
... Cap, 31 ... Pivot plate, 33 ... Pivot shaft, 34 ... Pressing part, 35 ... Working part, 36 ...
Shirt star member, 37, 39...slit, 40
...Top cover.

Claims (1)

[Scope of utility model registration request] A mixing pipe that creates a mixture of fuel gas and air that can be completely combusted by sucking air through an intake hole using the negative pressure generated by increasing the flow velocity of fuel gas ejected from a fuel tank through a nozzle hole. , a diffuser connected to the mixing tube to slow down and diffuse the flow rate of the mixed gas, and a combustion tube for igniting and continuously burning the mixed gas that has passed through the diffuser; In the gas lighter, the mixed gas is ignited by rotating the cap to activate a high voltage generation mechanism, and the resulting high voltage is sent to the discharge electrode facing into the combustion cylinder. A shutter member having a slit for allowing air to flow in is arranged around a mixing pipe provided with an intake hole, and the shutter member is adapted to rotate when a cap is formed with a pressing portion for operating the high voltage generating mechanism. It is characterized in that it slides when engaged with the working part of the interlocking pivot plate, and the slit in the shutter member communicates with a slit provided in the case for allowing air to flow in during use. A gas lighter.