JPH086924B2 - Writer - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gas lighter,
In particular, although not intended to be limited to this, the actual fair 3-4501
The present invention relates to an improvement in a wind resistant combustion device in which a gas / air mixture is combusted in a wind resistant cylindrical body as disclosed in Japanese Patent Publication No.

[0002]

2. Description of the Related Art A gas writer disclosed in Japanese Utility Model Publication No. 3-45017 supplies a mixture of air and a fuel gas to an internal space of a hollow burner cylinder (3), and the mixture is supplied in the cylinder. To burn. Since the gas burns in the cylinder and the cylinder (3) prevents the external wind from blowing off the combustion gas, it is difficult for the wind to misfire. That is, there is a first wind resistance effect. In addition to this, a catalyst wire (7) is arranged in the combustion cylinder (3), and this is red-heated by the combustion gas. Even if strong wind enters from the upper opening of the combustion tube (3) and the combustion in the tube (3) disappears temporarily,
The heated catalyst wire (7) automatically reignites the mixture around it. That is, since the catalyst wire (7) that is red-heated by the combustion gas constantly burns the air-fuel mixture around it continuously, even if there is a temporary misfire due to strong wind, it will automatically re-ignite immediately, which is a high wind resistance effect. There is a secondary wind resistance effect due to the catalyst wire (7).

[0003]

A fuel gas receiving port is provided at the lower end, a gas ejection opening is provided at the upper end projecting into the combustion cylinder (3), and an air intake is provided at an outer surface between the gas receiving port and the gas ejection opening. A mixture of fuel gas and air is supplied into the combustion tube (3) from a gas mixing pipe (5) having a port, but the gas flow sucks air at a high speed from the intake port, whereby the gas mixing pipe ( 5) supplies a relatively high-speed air-fuel mixture to the combustion cylinder (3). Therefore, the combustion gas is discharged from the combustion cylinder (3) at a high speed. However,
As the fuel gas and air are well mixed,
(3) So-called red flames do not appear inside and outside, and the combustion gas is transparent or slightly bluish and difficult to see. When the catalyst wire (7) is provided, it glows red, so it can be easily confirmed that the ignition is carried out by looking inside the combustion tube (3) from above, but from the side, it is ignited.
It's not easy to tell if (there is a flame) or not. Since the combustion gas blows out at high speed, the fact that the flame is not visible is
Brings anxiety to The. This anxiety becomes particularly strong when the catalyst wire (7) is not provided.

Cigarette lighters are often used not only outdoors in the wind, but also in indoor calm environments. When there is no wind outdoors or when it is used indoors, a red flame like a candle, which is generally used in the past, has a feeling of chilling, so it is often desired, and one writer
It is preferable to select a flame having a high wind resistance effect (combustion gas of air-fuel mixture) and a red flame having a low wind resistance effect but a good visual feeling.

A first object of the present invention is to provide a gas combustion apparatus capable of making such a selection. For this reason, a means for switching combustion characteristics is provided.
The second purpose is to increase the certainty of gas ignition.

[0006]

According to the present invention, a fuel tank (FT) including a gas discharge valve, a tubular member (3), and a nozzle member (7d) projecting from the lower portion of the tubular member (3) into the inner space thereof. , A gas guide cylinder (8) for guiding the fuel gas discharged to the outside of the fuel tank (FT) to the nozzle member (7d) through a gas release valve of the fuel tank (FT), and a side peripheral surface of the gas guide cylinder (8) It is attached to the cylinder member (3) for igniting the fuel gas discharged from the nozzle member (7d) to the cylinder member (3) facing the nozzle member (7d). In a writer having a piezo high voltage generator including electrodes, an opening (30a) at the lower end of the tubular member (3) for allowing air to enter the tubular member (3); the gas guide tube (8 ) Is slidably coupled to the air inlet (8b) and is movable to a first position for closing the air inlet (8b) and a second position for opening the air inlet (8b). The opening and the nozzle member (7d) An opening (7a) on which is the upper opening (7a) and the second shutter member (7
g) is opened on the side peripheral surface, and when the first shutter member (7h) is in the first position, it is closed by the gas guide tube (8), but the second
When in the position, the first shutter member (which is located above the upper end of the gas guide tube (8) and has a side opening (7b) communicating with the gas guide tube (8) and the inner space of the tube member (3) ( 7h); gas guide tube (8) when the first shutter member (7h) is in the first position
Of the nozzle member (7t) projecting inward from the upper end opening of the gas guide cylinder and located above the upper end opening of the gas guide cylinder (8) when in the second position and having a downwardly pointed outer peripheral side conical surface (7t).
d); and connected to the first shutter member (7h),
When the shutter member (7h) moves to the first position, the opening (3
0a) to a first position, and when the first shutter member (7h) moves to a second position, it moves to a second position to close the opening (30a), on a side peripheral surface of the first shutter member (h). The second shutter member (7g) mounted is provided. The symbols in parentheses indicate the corresponding elements in the embodiments shown in the drawings and described later.

[0007]

[Function] When the first shutter member (7h) is placed at the first position and the gas release valve of the fuel tank (FT) is opened, the fuel gas discharged from the fuel tank (FT) is guided by the gas guide cylinder (8) and the nozzle member. Pass through (7d) and exit into the tubular member (8). Therefore, when a high voltage is generated by the piezo high voltage generator, an electric discharge is generated in the electrode, and the nozzle member
The fuel gas emitted from (7d) is ignited at the most suitable combustion gas concentration for combustion between the nozzle tip and the electrode tip, and the flame rises upward from the tubular member (8). Since the air inlet (8b) is closed by the first shutter member (7h), the side opening (7b)
Since b) is closed by the gas guide tube (8), the gas guide tube
The fuel gas exiting the tubular member (8) through the nozzle member (7d) and the nozzle member (7d) contains substantially no air, and the nozzle member (7d)
The tubular member (3) passes through the opening (30a) by the fuel gas flow emitted from
Since air is sucked into the nozzle member (7d), the fuel gas concentration is higher as it is closer to the center axis of the nozzle member (7d), and the fuel gas concentration is lower as it is farther from the center line (air concentration is higher). There is a combustion gas concentration (point) suitable for fuel gas ignition on the electric discharge path, and therefore ignition of the fuel gas is reliable. Air is supplied to the flame rising from the upper end of the nozzle member (7d) from the outside, and the flame is a natural flame having a red external flame such as a candle flame. This flame is easily extinguished by a crosswind with a relatively low velocity, but since it is a red flame,
The existence of the flame is clear. This natural flame is suitable for igniting cigarettes indoors.

When the first shutter member (7h) is placed in the second position and the gas release valve of the fuel tank (FT) is opened, the fuel gas discharged from the fuel tank (FT) is discharged into the gas guide cylinder (8) and the nozzle member. Pass through (7d) and exit into the tubular member (8). Since the air intake port (8b) is open, the gas flow in the tubular member (8) sucks air into the tubular member (8) and mixes with the fuel gas, and the side opening (7b) is open. Therefore, some fuel gas / air mixture may
It goes out through the d) into the tubular member (8), but the rest is the side opening (7b)
Exit through the tubular member (8). Therefore, when a high voltage is generated by the piezo high voltage generator, an electric discharge is generated at the electrode,
It goes out through the side opening (7b) into the tubular member (8) and the nozzle member (7
d) The fuel gas / air mixture flowing upward between the tip and the electrode is ignited, and the combustion gas exits upward from the tubular member (8). The air-fuel mixture that flows upward from the nozzle member (7d) causes an axial flow of the combustion gas that flows upward from the cylindrical member (8), and regulates the combustion gas flow inside the cylindrical member (8). If this axial flow is too strong, there is a high probability that ignition by the discharge spark will fail, and even if ignition occurs, most of the unburned air-fuel mixture will go out of the tubular member (8) and inside the tubular member (8). If complete combustion is hindered, it is easy to misfire due to wind or the like. In the present invention, since the nozzle member (7d) has the outer peripheral side conical surface (7t) that is sharply downward at the lower end, the amount of air-fuel mixture flowing into the nozzle member (7d) is relatively small, and ignition by discharge spark occurs. Surely, the air-fuel mixture that has exited into the inner space of the tubular member (8) is burned while it is substantially inside the tubular member (8), and the tubular member (3) prevents external wind from blowing out combustion gas. As it interferes, it is hard to misfire against the wind. That is, there is a first wind resistance effect.

When the catalyst wire (4) is arranged in the cylindrical member (3), the catalyst wire is red-heated by the combustion gas, and strong wind enters from the upper end opening of the cylindrical member (3) to cause the inside of the cylindrical member (3). Even if the combustion of the air is temporarily extinguished, the heated catalyst wire (4) automatically reignites the air-fuel mixture around it. That is, since the catalyst wire (4) that is red-heated by the combustion gas always continuously burns the air-fuel mixture around it, even if there is a temporary misfire due to strong wind, it automatically re-ignites immediately, which is a high wind resistance effect. A secondary wind resistance effect due to the catalyst wire (4) can be obtained.

Other objects and features of the present invention will become apparent from the following description of embodiments with reference to the drawings.

[0011]

FIG. 1 shows an embodiment of the present invention, and FIG.
2A-2A line cross section, and a part of this cross section is enlarged and shown in FIG. 1 is a cross section taken along line 1A-1A of FIG. 2, and a part of this cross section is enlarged and shown in FIG. First, referring to FIG. 1 and FIG. This embodiment is a cigarette lighter, and the casing includes a main body C1, an intermediate body C2 and a lid body C.
Including 3. The intermediate body C2 is provided with a cylindrical body accommodating hole in which a female screw is cut, the ring 30 is inserted into the lower end of the hole, and the ceramic cylinder 3 is inserted onto the ring 30.
A support ring 5 having a catalyst wire 4 fixed to the upper end surface of the cylinder 3.
Is mounted, and the ring-shaped nut 6 is screwed into the female screw of the cylindrical body housing hole of the intermediate body C2, so that the nut 6 holds the ring 5. As a result, the ring 30, the ceramic cylinder 3, the support ring 5, and the press nut 6 are integrated with the intermediate body C2. The tip of the flame switching cylinder 7 enters the inside of the ring 30 and the ceramic cylinder 3.

Please refer to FIG. 3 and FIG. Flame switching cylinder 7
Is capable of sliding up and down with respect to the mixing tube 8 inside thereof, and the compression coil spring 9 gives a pushing force to the upper side.
The frame 10c pushes the outer flange 7f of the flame switching cylinder 7 downward. A nozzle 7d is press-fitted into the upper end opening 7a of the flame switching cylinder 7, and the wire coil 7 is inserted into the upper opening of the nozzle 7d.
e is press-fitted. The lower end of the nozzle 7d projects to the inside of the mixing pipe 8, and the peripheral surface on the lower end side is a conical surface 7 that is pointed downward.
It is t. The flame switching cylinder 7 has an opening 7b for discharging the fuel gas / air mixture, and the ring 3 is provided below the opening 7b.
An opening / closing plate 7g for closing the lower opening 30a of 0 is attached. The inner space of the flame switching cylinder 7 is a cylindrical space in which the mixing pipe 8 is fitted exactly.

The mixing tube 8 has an upper opening 8a,
There is an air intake port 8b and a lower opening 8c. Lower opening 8c
Has a filter 11a, a nozzle plate 11b, and a tube connecting cylinder 31, to which the upper end of a highly stretchable synthetic resin tube 12 is connected by a ring nut 33. The mixing pipe 8 penetrates the cap nut 32, the connecting cylinder 31 is screwed into the lower end of the mixing pipe 8, and the ring nut 33 is screwed into the lower end of the cap nut 32. Tu
The lower end of the valve 12 has a fuel gas opening / closing mechanism 27 of the fuel tank FT.
(Figs. 1 and 2) is connected to the tip of a fuel nozzle 13 which is a part of (Figs. 1 and 2). The fuel nozzle 13 has a gas release lever 14
(FIG. 1) is connected, and the gas discharge lever 14 is driven to rotate clockwise in FIG. 1, so that the fuel nozzle 13 is pulled upward, and the gas flow from the fuel nozzle 13 is increased by the synthetic resin. Flow through tube 12 to mixing tube 8.

Referring again to FIGS. The tip of a high-pressure lead 16 of a piezo (piezoelectric element) ignition device 26 is fixed to the ceramic cylinder 3. The ground pole of the ignition device 26 includes a pin 26c, a lid supporting lever 20, a pin 23,
It is electrically connected to the nozzle 7d and the wire coil 7e via the coil spring 24, the cap nut 32, the mixing pipe 8 and the flame switching cylinder 7. This is an electrical connection due to mechanical contact, and even if there is a place of poor contact, a substantial current loop is formed regarding high-voltage discharge. That is, when the piezo ignition device 26 generates a high pressure, it is added to the nozzle 7d and the coil 7e of the flame switching cylinder 7 and the tip of the lead 16 to generate an electric spark 17 (FIG. 5) therebetween. , Ignite the fuel around it.

In addition to the ceramic cylinder 3, the cap nut 32 is supported by the intermediate body C2, and the mixing pipe 8 is located at the center of the ceramic cylinder 3. The leaf spring 21 and the lid supporting lever 20 are fixed to the lower surface of the lid C3 by press fitting the pin 19 with the umbrella. Further, the leg of the pin-shaped selection button 22 with an umbrella penetrates from the upper surface to the lower surface of the lid C3, and the leg engages with the leaf spring 21 under the lower surface of the lid C3. The leaf spring 21 pushes up the selection button 22 as shown in FIG. As shown in FIG. 1, an intermediate C2 to which the ceramic tube 3 and the like are attached and the cap nut 32 and the like are attached
To the fuel nozzle 13 and the fuel tank FT.
14 is engaged as shown in FIG. 1, the pin 25 is inserted into the fuel tank FT and the pin hole at the lower leg end of the intermediate body C2 to connect the intermediate body C2 to the fuel tank FT, and the piezo is connected to the fuel tank FT. The metal base 26b at the lower end of the middle case of the ignition device 26 is attached to the fuel tank FT.
The high pressure lead 16 of the igniter 26 through the lead supporting hole of the ceramic cylinder 3, and the support lever 20 fixed to the lid C3 from the upper opening of the intermediate body C2 to the inside thereof.
By inserting the pin engagement leg 20b of the lever 20 into the pin 26c of the ignition device 26, the pin hole of the leg of the intermediate C3, the pin hole at the lower end of the flame switching lever 10 and the slightly compressed coil. the combined center of spring 24, through which the pin 2 3, as shown in FIG. 1, the fuel tank FT, intermediate C2,
By integrally connecting the flame switching lever 10, the coil spring 24 and the lid C3, one end of the coil spring 24 contacts the side flange of the cap nut 32 (FIGS. 1 and 3) and the other end of the flame switching lever 10 is engaged. hitting the fitting protrusions 10b, the coil spring 2 4 This drives the flame switching lever -10 counterclockwise flame switching lever -10 a - arm 10c is an upper surface of the outer flange 7f flame switching換筒7 downwards 1 and pushes the flame switching cylinder 7 in FIG.
The compression coil spring 9 is compressed as shown in FIG.

The fuel tank FT in which the intermediate body C2 and the lid C3 are connected as described above is inserted into the upper opening of the casing main body C1, and the screw 29 is passed through the hole at the bottom of the main body C1.
By screwing 9 into the screw hole at the bottom of the fuel tank FT,
The writer shown in FIG. 1 is assembled. In the assembled state (FIG. 1), the trunk portion 7h of the flame switching cylinder 7 closes the air intake opening 8b as shown in FIGS. Since the opening / closing plate 7g is below the lower surface of the ring 30, the lower opening 30a is opened, and the mixing pipe 8 substantially closes the mixture discharge port 7b of the flame switching cylinder 7.
When the fuel gas is discharged from 3, the fuel gas is discharged into the inner space of the ceramic cylinder 3 through the nozzle 7d and the wire coil 7e.
Air is not substantially mixed into the fuel gas until it comes out into the inner space of the ceramic cylinder 3. Although flame switching lever -10 is rotatable about a pin 2 3, is rotated biased in a counterclockwise direction by the repulsive force of the coil spring, as shown in FIG. 1, the flame switching換筒7
Is pushed down, and the compression coil spring 9 is compressed. Its lower end when the selection button 22 protrudes upward as shown in FIG. 1 are outside the rotation circle of the engagement projection 10d of the lever -10 about the pin 2 3, the pin 2 3 lid C3 Even when it is driven to rotate clockwise around the center, the selection button 22 does not contact the engaging projection 10d of the lever 10, and the lever 10 remains at the position shown in FIG. 1 (see FIGS. 1 and 5;
Natural flame mode).

[0017] However, when initially driven to rotate to press down on selection button 22 a lid C3 about the pin 2 3 clockwise, lever -1 under the legs of the selection button 22 is centered on the pin 2 3
Select button 2
Under leg 2 is hitting the engaging projection 10d of the flame switching lever 10, is rotated clockwise flame switching lever -10 against the repulsive force of the coil spring 2 4, thereby the lever -10 A - And the compression coil spring 9 moves upward.
The flame switching cylinder 7 is pushed up by the repulsive force of, and as shown in FIGS. 6 and 7, the trunk portion 7h of the flame switching cylinder 7 moves above the air intake opening 8b to open the opening 8b. The opening / closing plate 7g comes into contact with the lower surface of the ring 30 to close the lower opening 30a, and the air-fuel mixture discharge port 7b of the flame switching cylinder 7 moves upward from the upper end of the mixing pipe 8 and opens. When the fuel gas comes out, the negative pressure by the fuel gas flow causes the opening 8b.
The air is sucked into the mixing tube 8 from the above, and the fuel gas / air mixture is discharged into the inner space of the ceramic cylinder 3 through the discharge port 7b, the nozzle 7d and the wire coil 7e. Ceramic tube 3
A large amount of air is already mixed in the fuel gas when it leaves the inner space of the fuel cell (wind-resistant mode). Next, the usage mode and operation of the cigarette gas lighter having the above structure will be described.

1. Natural flame mode (from FIG. 1 to FIGS. 5 and 3) The user holds the main body C1 and the intermediate body C2 of the casing with the index finger, the middle finger, etc. of the right hand, and presses the selection button 2 with the thumb of the right hand.
When the lid C3 is rotated clockwise without touching the piezo 2, the piezo ignition device 2 is rotated by the clockwise rotation of the support lever 20.
6, the outer case 26a is pushed down via a pin 26c which is erected on the outer case 26a, and a return spring (not shown) is compressed in the device 26 and is supported by a hammer plunger (not shown) for high-pressure impact. The coil spring of is compressed. In this process, first, the pin 26d of the outer case 26a is driven to rotate the gas release lever 14 clockwise, the fuel nozzle 13 is pulled up, and the fuel gas flows into the mixing pipe 8. Since the selection button 22 does not contact the engaging projection 10d of the flame switching lever 10, the flame switching lever 10 remains at the position shown in FIG. 1, and the mixing pipe 8 and the flame switching cylinder 7 are at the positions shown in FIGS. 1 and 3. The fuel gas remaining from the fuel nozzle 13 passes through the nozzle 7d and the wire coil 7e into the inner space of the ceramic cylinder 3. Air is not substantially mixed into the fuel gas until it comes out into the inner space of the ceramic cylinder 3. Wire coil 7
The lower opening 30 of the ring 30 due to the fuel gas flow exiting from e
Air is sucked in from a and the air flow flows into the ceramic cylinder 3. Since the airflow flows so as to cover the fuel gas flowing upward from the wire coil 7e from below, the fuel gas concentration is high and the air concentration is low in the inner space of the ceramic cylinder 3 as it is closer to the central axis. On the contrary, the fuel gas concentration is lower and the air concentration is higher as it is closer to the tip surface of the high pressure lead 16.

Shortly before the cover C3 is rotated to the position shown in FIG. 5, in the ignition device 26, the hammer plunger is unlocked by a taper cam mechanism (not shown), and the hammer plunger is moved by the repulsive force of the coil for high-pressure impact. The piezoelectric element is struck at a stroke, and as a result, an electric spark 17 is generated between the high voltage lead 16 and the wire coil 7e.
The air-fuel mixture is ignited on or around the route 7 where the air-fuel mixture ratio is suitable for ignition (FIG. 5).

In this way, the flame rises from the ceramic cylinder 3, but like the flames of candles and matches, the fuel gas concentration is high at the center, so the center is oxygen deficient (internal flame),
The outer and upper parts where oxygen concentration is high become red external flames. That is, a natural flame with a pale inner flame inside and a red flame outside the bottom rises from the ceramic cylinder 3. When the tip of the cigarette is brought close to this flame, it catches fire.

As is well known, this flame is easily extinguished by the wind, but the user can easily see the ignition.
When there is no wind outdoors or indoors, this red flame gives the user a feeling of tranquility.

2. Windproof mode (Figs. 6 and 7) The user holds the main body C1 and the intermediate body C2 of the casing with the index finger and middle finger of the right hand, and presses the selection button 2 with the thumb of the right hand.
When the lid C3 (FIG. 1) is rotated clockwise after pressing down 2, the fuel nozzle 1 is rotated in the same manner as in the case of the natural flame mode.
The fuel gas is discharged from 3 to generate the spark 17 (FIG. 6). By the time the spark 17 is generated, as described above, the lower leg of the selection button 22 is the engaging projection of the flame switching lever 10. 1
Hitting the 0d, is rotated clockwise flame switching lever -10 against the repulsive force of the coil spring 2 4, thereby the fuel gas / air mixture through the discharge port 7b and the nozzle 7d and the wire coil 7e Goes out into the inner space of the ceramic tube 3.
When it comes out to the inner space of the ceramic cylinder 3, a large amount of air is already mixed in the fuel gas (FIG. 7).

Therefore, when the spark 17 is generated, the air-fuel mixture is ignited on or around the path of the spark 17 when the mixture ratio of the air-fuel mixture is suitable for ignition (FIG. 6). By this ignition, the inner space of the ceramic cylinder 3 becomes combustion gas, which red heats the catalyst wire 4 and exits from the upper end opening 3a at high speed. The combustion gas is transparent or slightly bluish and ignites when the tip of the cigarette is brought close to above the opening of the holding nut 6. Since the holding nut 6, the ceramic cylinder 3 and the ring 30 prevent the outside wind from blowing off the combustion gas, the combustion gas is unlikely to misfire with respect to the wind. That is, there is a first wind resistance effect. In addition to this, since the catalyst wire 4 is red-heated by the combustion gas, a strong wind enters from the upper opening of the holding nut 6 and the ceramic tube 3
Even if the internal combustion is temporarily extinguished, the heated catalyst wire 4 automatically reignites the air-fuel mixture around it. That is, since the catalyst wire 4 that is red-heated by the combustion gas always continuously burns the air-fuel mixture around it, even if a temporary misfire due to a strong wind causes immediate re-ignition, a high wind resistance effect, that is, the catalyst wire. There is a secondary wind resistance effect of 4.

[0024]

As described above, according to the writer of the present invention, the first shutter member (7h) is placed at the first position and the fuel tank (F
When the gas release valve of T) is opened and a high voltage is generated by the piezo high voltage generator, the flame rises upward from the tubular member (8). Since the fuel gas concentration is higher as it is closer to the central axis of the nozzle member (7d) and the fuel gas concentration is lower as it is farther from the center line (air concentration is higher), the fuel gas concentration on the electric discharge path between the nozzle tip and the electrode tip is There is a combustion gas concentration (point) suitable for gas ignition, and thus the ignition of the fuel gas is reliable. First
When the shutter member (7h) is placed in the second position and the gas release valve of the fuel tank (FT) is opened, and a high voltage is generated by the piezo high voltage generator, the air-fuel mixture is ignited and the combustion gas emits the combustion gas. ) Goes up. Since the nozzle member (7d) has the outer peripheral side conical surface (7t) that is pointed downward at the lower end, the amount of air-fuel mixture flowing into the nozzle member (7d) is relatively small, and ignition by the discharge spark is reliable. Further, the air-fuel mixture that has emerged in the inner space of the tubular member (8) burns while it is substantially inside the tubular member (8), and the tubular member (3) prevents external wind from blowing off the combustion gas, Less likely to misfire against the wind.

[Brief description of drawings]

FIG. 1 is a vertical sectional view showing an embodiment of the present invention.

2 is a sectional view taken along line 2A-2A in FIG.

3 is a cross-sectional view showing an enlarged part of a cross section taken along line 3A-3A of FIG.

FIG. 4 is a cross-sectional view showing an enlarged part of a cross section taken along line 4A-4A of FIG.

5 is a cross-sectional view similar to that shown in FIG.
FIG. 9 is a vertical cross-sectional view showing a usage state in which a lid C3 is opened with a cord.

FIG. 6 shows a cross section similar to that shown in FIG.
FIG. 9 is a vertical cross-sectional view showing a usage state in which a lid C3 is opened with a cord.

FIG. 7 is an enlarged vertical sectional view showing a part of the mechanical element shown in FIG.

[Explanation of symbols]

3: Ceramic tube 4: Catalyst wire 5: Support ring 6: Holding nut 7: Flame switching tube 7a: Upper end opening 7b: Mixture discharge port 7c: Ring groove 7d: Nozzle 7e: Wire coil 7f: Outer flange 7g: Open / close plate 7h: Main part 8: Mixing pipe 8a: Upper opening 8b: Air intake 8c: Lower opening 9: Compression coil spring 10: Flame switching lever 11a: Filter 11b: Nozzle plate 12: Synthetic resin tube 13: Fuel nozzle 14: Gas release lever 16: High pressure lead 17: Electric spark 18ag: Mixed air flow

Claims (6)

[Claims] 1. A fuel tank (FT) including a gas release valve, a tubular member
(3), a nozzle member (7d) protruding from the lower side of the tubular member (3) into the inner space thereof, and a fuel tank (F) through a gas release valve of the fuel tank (FT).
T) A gas guide cylinder (8) for guiding the fuel gas discharged to the outside to the nozzle member (7d), an air intake port (8b) opened on the side peripheral surface of the gas guide cylinder (8), and a nozzle member ( 7d) for igniting the fuel gas discharged from the tubular member (3), having a piezo high voltage generator including an electrode that is attached to the tubular member (3) and faces the nozzle member (7d), the writer, An opening (30a) at the lower end of the tubular member (3) for allowing air to enter the tubular member (3); slidably coupled to the gas guide tube (8), and having an air intake port (8b). Closed first position and air inlet
(8b) movable to the second position for opening, and a gas guide tube
(8) is inserted into the lower opening, the nozzle member (7d) is press-fit into the upper opening (7a), the upper opening (7a) and the second peripheral surface between the second shutter member (7g), When the first shutter member (7h) is in the first position, it is closed by the gas guide tube (8), but when it is in the second position, the gas guide tube (8) is above the upper end of the gas guide tube (8). A first shutter member (7h) having a side opening (7b) communicating with the inner space of the tubular member (3); when the first shutter member (7h) is in the first position, the gas guide tube (8) ) Projecting inward from the upper end opening of the gas guide cylinder (8) and located at the upper side of the upper end opening of the gas guide cylinder (8) when in the second position, having a downwardly pointed outer peripheral side conical surface (7t). ); And the first shutter member (7h) is connected to the first shutter member (7h), and the first shutter member (7h) is at the first position where the opening (30a) is opened when the first shutter member (7h) moves to the first position. Move to 2nd position Writer, characterized in that it comprises a -; the close the opening (30a) moves to the second position, the second shutter member mounted on a side peripheral surface of the first shutter member (h) (7g) when. 2. The writer according to claim 1, wherein the nozzle member (7d) includes a wire coil (7e) which is press-fitted into the upper end opening and projects upward from the upper end opening. 3. A first shutter member (7h) is provided at a first position and a second position.
A spring member (9) for driving toward one of the positions; and a combustion mode switching lever for driving the first shutter member (7h) toward the other against the force of the spring member. (1
0); The writer according to claim 1 or claim 2, further comprising: 4. An upper opening and a lid member (C3) for opening and closing the upper opening.
A casing (C1, C2, C3) including: a selector (22, 21) movable to a position connected to the lid member (C3) and engaged with the combustion mode switching lever (10); The writer according to claim 3, further comprising: 5. The selector (22, 21) has a leg penetrating from the upper surface to the lower surface of the lid member (C3) and can reciprocate in a direction substantially perpendicular to the upper surface, and 5. The lighter according to claim 4, comprising a leaf spring (21) connected to the leg below the lower surface of the lid member (C3) and pushing the button (22) upwardly from the upper surface. 6. The lid member (C3) is rotatable around a pin (23) extending in a direction orthogonal to a straight line parallel to the central axis of the gas guide cylinder (8); selectors (22, 21). Is the pin when the lid member (C3) is in the position to close the upper opening of the casing (C1, C2, C3).
The upper end of the combustion mode switching lever (10) centered on (23) can be moved to the retracted position outside the rotation circle and the engagement position inside the rotation circle, and the lid member (C3) can be moved to that position. A button (22) having a leg penetrating in a direction substantially perpendicular to the upper surface, and a lid member (C
6. The lighter according to claim 5, comprising a leaf spring (21) connected to the leg below the lower surface of 3) for pushing the button (22) to the retracted position.