JPH05106837A - Internal combustion type gas lighter - Google Patents

Abstract

PURPOSE:To provide an internal combustion type gas lighter which is simple in constitution and switcheable to burner ignition or regular visible flame ignition and can be arbitrarily properly used according to a using place and environment, such as weather. CONSTITUTION:A switching mechanism 12 for switching the ignition mode from burner ignition to regular visible flame ignition by openably operating an suction hole 6b1 of at least a mixing pipe 6b of which an internal combustion mechanism is composed is arranged in the desired position of a lighter body 1. The switching mechanism 12 has an operating body 1 having one end expanded to a lighter surface through a slit 1a, and through operation of the operating body, the opening area of at least the suction hole 6b1 is changed. Preferably, a diffuser 6c is molded in a hollow cylindrical body and supported to a combustion cylinder 6d and the mixing pipe 6b is slidably attached to the diffuser 6c. By sliding the mixing pipe 6b through the operating body, opening and closing operation of the suction hole 6b1 is carried out.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to improvement of a so-called internal combustion gas lighter in which a mixed gas is ignited and burned in a lighter body.

[0002]

2. Description of the Related Art Generally, in a gas lighter, a gas ejecting nozzle is operated by pushing down an ignition operator to start ejecting gas, and an ignition means is operated to generate a spark so that gas ignition is performed. Has become. Such a gas lighter is roughly classified into a filer-type lighter (so-called flint-type lighter) in which a pyrotechnic stone is rubbed with a file and ignited by a spark at that time, or a high-voltage is generated by hitting a piezoelectric element with a hitting mechanism. Piezoelectric lighter (so-called piezo lighter) that uses a piezoelectric unit to ignite by spark discharge.
In addition, there is an internal combustion gas lighter with a lid, etc., in which a lid is openably and closably capped on the top of such a piezo lighter, and the piezoelectric unit is operated by opening and closing the lid.

Among these gas lighters, particularly in the recent piezoelectric ignition type gas lighters, a combustion cylinder or the like is built in the lighter main body so that the gas mixed with air in the main body of the lighter is generated. Wind resistance (WIND-PROO), which is a so-called internal combustion gas lighter that is ignited and burned
F) Various gas lighters have already been devised.

Conventionally, as such an internal combustion gas lighter, for example, as shown in FIG. 7, a gas tank filled with fuel gas and a negative pressure generated by injecting the fuel gas from the gas tank at an increased flow velocity A mixing pipe having an intake hole for sucking air by means of which the mixing gas promotes mixing of fuel gas and air; a diffuser connected to the mixing pipe in order to reduce and diffuse the flow velocity of the mixed gas; A combustion tube connected to the diffuser for further decelerating and diffusing the gas mixed with air by the diffuser (mixed gas) to form a mixed gas with air having a flow velocity sufficient for ignition and combustion, There is a gas lighter in which ignition and combustion are performed in the lighter body by providing an ignition means for igniting the combustible gas in the combustion cylinder (see Japanese Patent Laid-Open No. 63-91431).

[0005]

However, in the internal combustion gas lighter disclosed in the above-mentioned Japanese Patent Laid-Open No. 63-91431, the mixed gas produced by the jet jet is burned and ignited in a burner shape. Although it has the advantage that it can be used under strong winds without problems, the flame does not bulge outwardly from the flame outlet at the top of the windshield as with a normal lighter, and the flame is light in the eyes. In combination with the fact that it is difficult to see, it was feared that if the heat wire for confirming the ignition was not provided at the flame mouth, it could be mistakenly recognized as unignited, or sometimes burned.

The present invention has been made in view of such conventional problems, and can be easily switched to burner ignition or conventional visible flame ignition and used properly according to the place of use or the environment such as climate. The purpose of the present invention is to provide an internal combustion type gas lighter.

[0007]

SUMMARY OF THE INVENTION In order to solve the above-mentioned conventional problems and achieve the intended purpose, the structure which is the gist of the present invention is a gas tank formed in a lighter body,
A tank lid that is airtightly integrated with the upper opening of the gas tank, a fitting recess of the upper opening that is integrally formed in the tank upper lid, and a transparent member that is opened in the center of the bottom surface of the fitting recess and communicates with the inside of the gas tank. An internal combustion gas lighter comprising a hole, a valve mechanism incorporated in the fitting recess and having a gas ejection nozzle projecting at its upper end so as to be able to be drawn out, and an internal combustion mechanism communicating with the upper end of the gas ejection nozzle. The internal combustion mechanism includes a nozzle plate which is sealed in the jet outlet of the gas jet nozzle and has a hole in the center, a mixing pipe which is connected to an upper end of the gas jet nozzle and has an intake hole in a radial direction, and an upper portion of the mixing pipe. A combustion tube continuously connected to the combustion tube, a discharge terminal fixed to the combustion tube via an insulator, and a diffuser having an ejection passage that is internally provided between the mixing tube and the combustion tube and penetrates in the vertical direction. Is equipped with In the internal combustion gas lighter, at least the intake hole of the mixing tube is openably and closably operated to convert from burner ignition to conventional visible flame ignition, and by extension, the switching mechanism is the lighter body. The internal combustion gas lighter is provided with an operating body having one end bulged toward the surface of the lighter through a slit at a desired position, and at least the opening area of the intake hole can be changed by operating the operating body.

Further, the diffuser has a hollow cylindrical body and is supported by the combustion cylinder, and the mixing pipe is slidably assembled in the hollow, and the intake hole is formed by sliding the mixing pipe. It is preferable that the opening / closing operation is performed.

For example, it is preferable that the intake hole of the mixing pipe is closed by the side wall surface of the diffuser when the mixing pipe is slid in a certain direction, and further, it is formed in the radial direction of the diffuser. Further, at least one or more diffusion holes may be assembled so as to be closed by the side wall surface of the mixing tube when the mixing tube is slid in a desired direction.

[0010]

In the internal combustion gas lighter of the present invention having the above-described structure, the vaporized gas ejected from the gas ejection nozzle is further ejected with the flow velocity further increased by sealing the nozzle pool, and at the same time, the negative pressure The air is sucked into the diffuser while sucking air from the intake hole of the mixing tube. Then, the mixed gas of the injected gas and air is diffused into the combustion cylinder while being further mixed to improve the combustion efficiency in the diffuser, and then the spark discharge is generated in the diffused mixed gas. Then, it will be ignited like a burner (burner ignition).

Further, since the intake port of the mixing tube is openably and closably operated to provide a switching mechanism for converting burner ignition to conventional visible flame ignition, wind resistance is improved depending on the place of use, climate, etc. It can be used as either an excellent flameless gas lighter or a conventional flammable gas lighter with a bulging flame.

Further, the switching mechanism is provided with an operating body whose one end is bulged to the surface of the lighter through a slit at a desired position of the lighter body, and at least the opening area of the intake hole can be changed by operating the operating body. With this configuration, it is possible to eliminate the so-called air suction action using a negative pressure, which occurs when the fuel gas from the gas tank is jetted at an increased flow velocity, and the fuel gas is mixed with the air as it is. Without it, in other words, the fuel gas will flow into the diffuser as it is without generating mixed gas. At that time, the diffuser has a hollow cylindrical body and is supported by the combustion cylinder, and the mixing pipe is slidably assembled in the hollow, and the mixing pipe is displaced by the operating body. It is preferable to assemble so as to open and close the intake hole.

Further, when the mixing pipe is slid in a certain direction, the intake hole of the mixing pipe is blocked by the side wall surface of the diffuser without increasing the number of parts. The above-mentioned so-called so-called negative pressure suction action of air can be eliminated, and at least one diffusion hole formed in the radial direction of the diffuser slides on the mixing pipe in a desired direction. By assembling so that it is blocked by the side wall surface of the same mixing pipe, the fuel gas flowing from the mixing pipe increases combustion efficiency in the diffuser depending on whether the diffusion hole is opened or closed, that is, when the diffusion hole is opened. While being mixed further to improve, it will be diffused into the combustion cylinder through the ejection passage and the plurality of diffusion holes, but when the diffusion holes are blocked, the fuel gas ejected from the gas ejection nozzle is not diffused and remains as it is. Eruption of heaven Is ejected outward from the cylinder, and as a result, each cylinder of the internal combustion mechanism is connected like a single gas ejection nozzle, and is ignited to swell the flame like a conventional gas lighter ( Visible flame ignition).

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will now be described with reference to the drawings. In the figure, A is an internal combustion type gas lighter according to the present invention. As shown in FIG. 1, the internal combustion type gas lighter A is a tank lid integrally formed above a gas tank 2 formed in a lighter body 1. Equipped with 3.

Inside the tank upper lid 3, there is integrally formed a bottomed cylindrical fitting recess 3a having an upper opening, and a through hole communicating with the gas tank 2 opened at the center of the bottom surface of the fitting recess 3a. The valve 5 is press-fitted in an airtight manner via 3b.

The valve mechanism 5 has a nozzle lid 5a having a cylindrical lid shape having an opening (not shown) at the top end surface, and a cylindrical bottomed nozzle bottom plug fitted in the lower opening of the nozzle spiral 5b. A valve chamber (not shown) is formed inside with the body 5b, and the gas ejection nozzle 5c has an upper end outside the opening of the nozzle spiral 5a via an O-ring and a spring in the valve chamber. It is mounted so as to project (see Fig. 1).

Further, as shown in an enlarged view in FIG. 2, one end of a valve operating lever 13 (see FIG. 1), which will be described later, is swingably supported in the vertical direction on the neck portion of the gas jet nozzle 5c. They are engaged with each other, and the neck portion of the gas ejection nozzle 5c is moved in the withdrawing direction by the lifting operation of the valve operating lever 13 so that the valve is opened and the gas ejection is started.

A liquefied gas suction member 5f is attached to the bottom surface of the nozzle bottom plug 5bc through a filter 5d such as malt and a nail-shaped stator 5e. The liquefied gas suction member 5f has a cylindrical body assembled so that the upper end thereof comes into contact with the nail-shaped stator 5e and the lower end thereof extends into the gas tank 2, and the sintered core S is filled therein. Has been done. Further, an O-ring 5g is fitted to the outer peripheral surface near the upper end of the liquefied gas suction member 5f via an annular groove,
The shield property with respect to the inner peripheral surface of the through hole 3b which contacts the outside is maintained. Further, a cutout hole 5h is opened on the outer peripheral surface near the lower end of the suction member 5f so as to come into contact with the liquefied gas in the gas tank 2.

On the other hand, on the gas ejection nozzle 5c,
The internal combustion mechanism 6 is assembled. The internal combustion mechanism 6 is shown in FIG.
As enlarged and shown in FIG. 1, a nozzle plate 6a sealed at the ejection port of the gas ejection nozzle 5c, and a mixing pipe 6b capped at the upper end of the gas ejection nozzle 5c to internally install the nozzle plate 6a. A diffuser 6c connected to the upper portion of the mixing tube 6b, and a combustion tube 6d joined to mount the diffuser 6c. The nozzle plate 6a
Has a cylindrical lid shape having a hole 6a ₁ in the center thereof, and is for further accelerating the flow velocity of the vaporized gas ejected from the gas ejection nozzle 5c. If necessary, a fine hole diameter may be provided on the lower surface side of the hole 6a ₁ . A filter (not shown) is attached.

The mixing tube 6b is formed into a cylindrical body having a rocket-shaped cross section formed so that at least the inner peripheral surface is gradually narrowed upward, and the lower end opening is formed on the outer periphery of the nozzle plate 6a. It is vertically supported by being loosely fitted. Further, an overhanging side 6b ₂ is provided around the outer peripheral side surface of the large diameter portion of the mixing tube 6b.
₂ is assembled so as to interlock with an elevating means 12 described later. Further, a plurality of intake holes 6b ₁ and 6b ₁ are opened in the radial direction on the side surface of the middle diameter portion of the mixing pipe 6b. The intake holes 6b ₁ and 6b ₁ suck in air by using a negative pressure generated when the fuel gas passing through the perforations 6a ₁ of the nozzle plate 6a is jetted with an increased flow velocity. It promotes mixing with.

Further, a combustion cylinder 6d is arranged on the mixing pipe 6b via a diffuser 6c described later. The combustion cylinder 6d has an upper end fitted into the fitting hole 4A of the intermediate holder 4 and a lower end fitted into the burner holder 10 (via a separate connecting member 9) so that the interior of the lighter body 1 (specifically, the intermediate holder 4). The discharge terminal 8 is mounted on the inner side and protrudes through the insulator 7 inside. Further, below the connecting member 9 attached to the lower end of the combustion tube 6d, the upper end is in contact with the lower end surface of the connecting member 9 and the lower end is the top surface of the overhanging side 6b ₂ of the mixing pipe 6b. The abutting compression spring 11 is mounted, and a diffuser 6c is arranged in the spring 11 to project the lower end.

The diffuser 6c has a jet rocker 6c ₁ penetrating in the vertical direction (coaxial direction) and has a rocket-shaped cross section similar to that of the mixing pipe 6b, and has a small diameter in which the jet chute 6c ₁ is formed. The lower outer circumference of the large diameter portion is crimped and fitted into the connecting member 9 so that the portion and the middle diameter portion having the plurality of diffusion holes 6c ₂ , 6c ₂ ... ing. Further, the mixed gas flowing in from the mixing pipe 6b side is contracted into a small hole on the inlet side (lower end side) of the jet passage 6c ₁ so that the mixed gas comes into contact with the zenith surface in the diffuser 6c and causes a reverse jet flow. The diameter is set so that the mixed gas is effectively diffused while further promoting the mixing of the gases.

On the other hand, in the lighter body 1, there is provided a switching mechanism 12 for operating at least the intake hole 6b ₁ of the mixing tube 6b so as to be openable and closable so as to convert the burner ignition to the conventional visible flame ignition. The switching mechanism 12 includes a disk-shaped rotary screw 12a, one end of which is swollen at the desired position on the side surface of the lighter body 1 through the slit 1a toward the lighter surface, and a rotary shaft 12b which penetrates the center of the rotary screw 12a. It is equipped with an operating body. The rotary shaft 12b is rotatably attached to the burner holder 10 at the upper end and the lower end in the top hole 3c of the tank upper lid 3 so that the rotary screw 12a is rotatable. ..

Further, on the top surface of the rotary screw 12a, an inclined surface 12a for determining the sliding stroke of the mixing pipe 6b is provided.
₁ are recessed, by rotating the rotating screw 12a, the ChoIzuruhen 6b ₂ abutting on the inclined surface 12a ₁ has been the mixing tube 6b along the inclined surface 12a _1, in other words , The slidable surface 12a ₁ is displaced and slid from the lowest position (see FIG. 2) to the highest position (see FIG. 5). As shown in FIG. 2, the inclined surface 12a ₁ of the rotary screw 12a fully opens the intake hole 6b ₁ of the mixing tube 6b and the diffusion hole 6c ₂ of the diffuser 6c near the lowest position. At the highest position, that is, as shown in FIG. 5, when the mixing pipe 6b is slid upward, the intake hole 6b ₁ overlaps with the side wall surface of the diffuser 6c and is completely closed. The plurality of diffusion holes 6c ₂ , 6c ₂ formed in the diffuser 6c are aligned so as to be closed by the side wall surface of the small diameter portion of the mixing tube 6b. As described above, the switching mechanism 12 adjusts the mixing ratio with air by freely changing the opening area of the intake hole 6b ₁ , and converts the burner ignition at the time of full opening to the visible flame ignition at the time of blockage. ..

On the other hand, as shown in FIG. 1, the ignition mechanism of the internal combustion gas lighter A has the above-mentioned gas ejection nozzle 5c.
A valve operating lever 13 having one end engaged with the neck of the operator and an ignition operator 14 also serving as a lid, which is capped on the top of the lighter so that a local lever 14a is interlocked with the other end of the valve operating lever 13.
And a piezoelectric unit 15 that is operated by pushing the ignition operator 14.

The valve operating lever 13 has one end fitted and supported by the neck portion of the gas ejection nozzle 5c so as to swing vertically with a bearing 3d protruding from the top surface of the tank upper lid 3 as a fulcrum. When the other end is pushed down, the valve operating lever 13 swings around the fulcrum to move the neck portion of the gas ejection nozzle 5c in the withdrawing direction.

The piezoelectric unit 15 has an outer box 15a and an inner box 15b which are fitted to each other so as to expand and contract in the vertical direction. Inside the inner box 15b, a piezoelectric element (not shown) is provided. , Hammer, return spring, etc. are incorporated. Further, in the piezoelectric unit 15, a conductive wire 15c connected to one electrode of the piezoelectric unit 15 is extended upward, and the free end side thereof is the insulator 7 described above.
It is connected to the discharge terminal 8 mounted via.

In the internal combustion type gas lighter A of the present invention having such a structure, the local lever 14a is operated by pushing down the ignition operator 14 with the thumb of the hand holding the lighter body 1 (see FIG. 3). The piezoelectric unit 15 is pressed to generate a spark discharge at the discharge terminal 8, the neck portion of the gas ejection nozzle 5c is operated in the pulling direction by the valve operating lever 13, the valve is opened, and the liquefied gas suction is performed. The fuel gas in the gas tank 2 sucked up through the member 5f reaches the filter 5d via the peripheral surface of the nail-shaped stator 5e and is vaporized. Further, the vaporized gas drilling which opens radially further said gas ejection nozzle 5c passes through the valve hole of the nozzle bottom stopper 5b passes through the filter 5d (not shown) through the gas injection passage 5c ₁ (See FIG. 2) and is ejected outward from the ejection port at the upper end. Then, the vaporized gas ejected from the gas ejection nozzle 5c is the nozzle pool 6
By the sealing of a _1, the flow velocity is further increased and jetted, and at the same time, the air is sucked from the intake hole 6b ₁ of the mixing pipe 6b to the diffuser 6c by utilizing the negative pressure effect generated at the flow velocity. Then, the mixed gas of the injected gas and air comes into contact with the zenith surface in the diffuser 6c to cause a reverse jet flow, and is further mixed to improve combustion efficiency while being further mixed with the zenith jet paths 6c _{1 and} A plurality of diffusion holes 6c ₂ , 6 opened on the side surface
The light is diffused into the combustion cylinder 6d via c _2, ... At that moment, the spark discharge is ignited and ignites in a burner shape (burner ignition).

When the rotary screw 12a of the switching mechanism 12 is rotated, the rotary screw 12a (specifically, the inclined surface 12a
₁ ) The overhanging side 6b ₂ of the mixing tube 6b that is in contact with the upper side is displaced along the inclined surface 12a ₁ so that the mixing tube 6b can be moved up and down, but as shown in FIG. Mixing tube 6
In the vicinity of the highest position where b is slid upward, the intake hole 6b ₁ of the mixing tube 6b is overlapped and closed in the side wall surface of the diffuser 6c, and a plurality of diffusions formed in the diffuser 6c are formed. The holes 6c ₂ and 6c ₂ are also closed by the side wall surface of the small diameter portion of the mixing tube 6b, and thus can be converted into a normal flame type gas lighter. That is, the intake hole 6 of the mixing pipe 6b
Since b ₁ is blocked by the side wall surface of the diffuser 6c,
Even if the vaporized gas ejected from the gas ejection nozzle 5c is ejected with an increased flow velocity, the air suction action using the negative pressure does not occur, in other words, the mixed gas is not generated. The vaporized gas will flow into the diffuser 6c as it is. Moreover vaporized gas that has flowed into the diffuser 6c from the diffusion holes 6c _2, 6c ₂ are closed, it will be ejected directly from the ejection passage 6c ₁ zenith, each of such internal combustion mechanism resulting The cylinder is connected like a single gas ejection nozzle 5c to eject gas from the top end, and is ignited to swell the flame like a conventional gas lighter (visible flame ignition). Also,
Reference numeral 16 in the drawing denotes a bottom plug that closes the lower end opening of the mixing pipe 6b in an airtight state at the time of ignition, that is, when the gas ejection nozzle 5c is pulled up by the valve operating lever 13 (see FIGS. 4 and 6). In the figure, 17 is a cushioning member that also serves as a shield and is made of a foam material such as sponge, and 18 is a heating wire that is red-heated at the time of ignition.

The internal combustion gas lighter A of the present invention is not limited to this embodiment and can be freely modified in design within the scope of the object of the present invention, and the present invention includes all of them. To do. For example, in this embodiment,
Although the mixing tube 6 is assembled to be movable up and down via the switching mechanism 12 to change the opening areas of the intake hole 6b _{1 and the} diffusion hole 6c ₂ , the invention is not limited to this, and the diffuser 6c or the combustion cylinder is not limited thereto. Either or both of 6d may be slidably assembled to change the opening area. Further, the intake hole 6b ₁ and the diffusion hole 6c ₂ may each have a plate-like or annular opening / closing member (not shown). May be rotatably provided so that the aperture can be adjusted arbitrarily. Further, as the operation of the switching mechanism 12, in the present embodiment uses a rotary screw 12a which recessed inclined surfaces 12a ₁ on the top surface, without being limited thereto, for example, the side surface of the lighter body 1 An operation in which a connecting lever (not shown) of the mixing tube 6b is slidably protruded into an opened vertical hook-shaped slit (not shown) and is slid vertically with a finger pad. Needless to say, it can be used as a body and any switching mechanism can be adopted. Further, a spring 11 is attached to the outer circumference of the mixing tube 6b to allow the mixing tube 6b
Although the sliding operation of b is facilitated, such a mixing pipe 6
The spring 11 is not always necessary because it can be easily lowered even by its own weight of b. Further, in this embodiment, the diffuser 6c is assembled under the combustion cylinder 6d via the separate connecting member 9, but the combustion cylinder 6d and the diffuser 6c may be directly connected to each other in order to omit the connecting member 9. Good, and the present invention includes all of these.

[0031]

The present invention is configured as described above, and the vaporized gas ejected from the gas ejecting nozzle is mixed by utilizing the negative pressure generated by ejecting the vaporized gas at a further increased flow velocity due to the sealing of the nozzle pool. While inhaling air from the intake hole of the pipe, it is vigorously ejected toward the inside of the diffuser, and the ejected vaporized gas and air are further mixed in the diffuser to improve combustion efficiency, and inside the combustion cylinder. As a result, the spark discharge ignites the diffused mixed gas to ignite it in a burner shape (burner ignition). By providing the switching mechanism for converting to visible flame ignition, it is possible to easily provide an internal combustion gas lighter that can be selectively used as a conventional gas lighter in which a flame bulges.

Further, the switching mechanism is provided with an operating body whose one end is bulged to the surface of the lighter through a slit at a desired position of the lighter main body, and at least the opening area of the intake hole can be changed by operating the operating body. Specifically, the diffuser is molded into a hollow cylindrical body and supported by the combustion cylinder, and the mixing pipe is slidably assembled in the hollow, and the mixing is performed via the operating body. If the pipe is assembled by displacement sliding to open / close the intake hole, a so-called air suction action using a negative pressure, which is generated by injecting the fuel gas from the gas tank at an increased flow velocity, is performed. It is possible to eliminate the fuel gas, and the fuel gas is directly mixed into the diffuser without being mixed with the air, in other words, the mixed gas is not generated. When the pipe is slid in a certain direction, the intake hole of the mixing pipe is closed by the side wall surface of the diffuser, thereby increasing the number of parts without increasing the number of parts. , It becomes possible to eliminate the suction action of air by using negative pressure, and at least one diffusion hole formed in the radial direction of the diffuser mixes when the mixing pipe slides in the desired direction. By assembling so that it is blocked by the side wall surface of the pipe, when the diffusion hole is blocked, the fuel gas ejected from the gas ejection nozzle is ejected as it is from the ejection path of the zenith to the outside without being diffused, As a result, each cylinder of such an internal combustion mechanism can be connected like a single gas ejection nozzle and can be ignited to swell a flame just like a normal gas lighter (visible flame ignition).

As described above, in the internal combustion gas lighter of the present invention, at least the intake hole of the mixing pipe is openably and closably operated to switch to the burner ignition or the conventional visible flame ignition, so that the place of use, the climate, etc. can be controlled. Depending on,
It can be used as a flameless gas lighter with excellent wind resistance or a conventional gas lighter in which the flame swells.For example, when igniting cigarettes under strong wind, burner ignition, fireworks, stoves, etc. When it is used as an igniter, it can be arbitrarily used according to the purpose of use or the like by the conventional visible flame ignition, and the practical value of carrying out the present invention is extremely great.

[Brief description of drawings]

 The drawings show an example of implementation of the present invention.

FIG. 1 is a vertical cross-sectional view of an internal combustion gas lighter according to the present invention.

FIG. 2 is an enlarged vertical sectional view showing a main part of an internal combustion gas lighter according to the present invention.

FIG. 3 is a vertical cross-sectional view showing the ignition of the internal combustion gas lighter according to the present invention.

FIG. 4 is an enlarged vertical sectional view showing a main part in the same state.

FIG. 5 is an enlarged longitudinal cross-sectional view of a main part showing a state in which a rotary screw is rotated and a mixing tube is slid to the uppermost position.

FIG. 6 is an enlarged vertical sectional view of an essential part showing a state of ignition.

FIG. 7 is a longitudinal sectional view of an essential part showing an internal combustion mechanism of a conventional internal combustion gas lighter.

[Explanation of symbols]

 1 Lighter main body 2 Gas tank 3 Tank upper lid 3a Fitting recess 3b Through hole 3c Top recessed hole 3d Bearing 4 Intermediate case 4a Fitting hole 5 Valve 5a Nozzle spiral 5b Nozzle bottom plug 5c Gas jet nozzle 5d Filter 5e Nail-shaped stator 5f Liquefied gas suction member 5g O-ring 5h Notch hole 6 Internal combustion mechanism 6a Nozzle plate 6b Mixing tube 6c Diffuser 6d Combustion cylinder 7 Insulator 8 Discharge terminal 9 Connecting member 10 Burner holder 11 Spring 12 Switching mechanism 12a Rotating screw 12b Rotating shaft 13 Valve Operating Lever 14 Ignition Operator 15 Piezoelectric Unit 16 Bottom Plug 17 Cushioning Member 18 Heat Wire S Sintered Core

Claims (5)

[Claims] 1. A gas tank formed in a lighter main body, a tank upper lid that is airtightly integrated with an upper opening of the gas tank, an upper opening fitting recess formed integrally in the tank upper lid, A through hole opened at the center of the bottom surface of the fitting recess and communicating with the inside of the gas tank, a valve mechanism incorporated in the fitting recess and having a gas ejection nozzle projecting freely at the upper end, and a valve mechanism communicating with the upper end of the gas ejection nozzle. In the internal combustion type gas lighter comprising: an internal combustion mechanism, the internal combustion mechanism includes a nozzle plate sealed at an ejection port of the gas ejection nozzle and provided with a hole in the center, and a radial direction connected to an upper end of the gas ejection nozzle. Between the mixing tube and the combustion tube, a mixing tube provided with an intake hole, a combustion tube connected to the upper part of the mixing tube, a discharge terminal fixed to the combustion tube via an insulator, Internally installed up and down And a switching mechanism for converting from burner ignition to conventional visible flame ignition by opening and closing at least the intake port of the mixing tube so as to open and close the diffuser. Internal combustion type gas lighter. 2. The switching mechanism includes an operating body having one end bulged toward the lighter surface through a slit at a desired position of the lighter body, and at least the opening area of the intake hole is changed by operating the operating body. The internal combustion gas lighter according to claim 1, wherein 3. The diffuser has a hollow cylindrical body and is supported by the combustion cylinder, and the mixing pipe is slidably mounted in the hollow, and the mixing pipe is slidably operated. The internal combustion gas lighter according to claim 1, wherein an opening / closing operation of the intake hole is performed. 4. The internal combustion engine according to claim 1, wherein the intake hole of the mixing pipe is closed by the side wall surface of the diffuser when the mixing pipe is slid in a certain direction. Gas lighter. 5. The at least one diffusion hole formed in the radial direction of the diffuser is closed by a side wall surface of the mixing pipe when the mixing pipe is slid in a desired direction. The internal combustion gas lighter according to claim 1, 3 or 4.