JPH0534446U - Gas lighter - Google Patents

Abstract

(57) [Abstract] [Purpose] To further reduce the number of parts and reduce the cost by using a simple means that serves both as a means for sucking up liquefied gas and a means for supplying heat of vaporization to eliminate the need for a sintered core. Realize. A liquefied gas suction member hanging from the lower end of a nail-shaped stator 5n into the gas tank 2 is arranged so that the upper end contacts the lower surface of the nail-shaped stator 5n and the lower end extends into the gas tank 2. It is formed by a spiral member such as a coil spring 6 assembled. As a result, the liquefied gas in the gas tank 2 is transferred along the spiral groove of the spiral member by a so-called capillary phenomenon, and the heat of the liquefied gas is transferred through the spiral member to the nail-shaped stator 5n in the vaporization chamber. , Supply sufficient heat of vaporization into the vaporization chamber. In addition, the spiral member can immediately return to its original state due to the flexing force even if a force (external pressure) is applied in the bending direction or bending direction, so it is easy to assemble and align in the gas tank. It does not break or bend like the conventional sintered core.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an improvement of a lighter (oil lighter, piezo lighter, flint type lighter) in which a liquefied gas suction member is suspended in a tank.

[0002]

[Prior 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 to ignite gas. Such gas lighters are roughly classified into a filer-type lighter (so-called flint-type lighter) that rubs a pyrotechnic stone with a file and ignites with a spark at that time, or a high-voltage is generated by striking a piezoelectric element with a striking mechanism. There is a piezoelectric ignition type lighter (so-called piezo lighter) that ignites by a spark discharge using a piezoelectric unit that allows the lid to open and close the top of the piezo lighter so that the lid can be opened and closed. There is a gas lighter with a lid that operates the piezoelectric unit by opening and closing.

[0003] Among these gas lighters, the file type lighter and the piezoelectric ignition type gas lighter described above are generally so-called plastic disposable lighters. Since the lighter is molded from plastic up to the vaporization chamber and around the valve, the supply of vaporization heat required to vaporize the liquefied gas of the fuel is insufficient, and the liquefied gas is not sufficiently vaporized to form a nail shape. Since it is feared that the flame may pass through the passage between the stator and the valve bottom (more specifically, the bottom surface of the nozzle bottom plug) and cause instability of the flame, the heat of vaporization around the vaporization chamber and the valve should be eliminated in order to eliminate such defects. Various plastic gas lighters were also devised, which also served as a means for supplying the gas.

Conventionally, as such a gas lighter, for example, as shown in FIG. 6, a plastic tank top cover 3 is airtightly fixed to an upper part of a plastic gas tank 2, and a valve 5 is provided in the tank top cover 3. In the plastic gas lighter in which a vaporization chamber wall 13 for accommodating a filter 5o for vaporizing the liquefied gas in the gas tank 2 is provided below the valve 5, the vaporization chamber wall 13 is made of metal. There was a portable gas lighter (see Japanese Utility Model Publication No. 54-9515).

Further, as shown in FIG. 7, a valve 5 is attached to the upper part of a plastic gas tank (not shown), and a liquefied gas suction core S is hung from the lower part of the valve 5 into the gas tank. In the plastic gas lighter, the lower part of the valve 5 extends around the upper part of the core S, and the upper end surface of the lower part of the nail-shaped stator 5n under the valve 5 is brought into contact with the upper peripheral surface of the core S. A metal heat collecting cylinder 14 extending along the inside of the gas tank is provided to transfer the heat of the liquefied gas to the nail-shaped stator 5n by heat conduction, and to generate the heat of vaporization required for the liquefied gas to vaporize in the vaporization chamber. There was a gas lighter made of plastic which was supplied into the vaporization chamber to stabilize the flame (see Japanese Patent Publication No. 57-32304).

[0006]

[Problems to be solved by the device]

 However, of the conventional gas lighters described above, in the portable gas lighter disclosed in Japanese Utility Model Publication No. 54-9515, most of the vaporization chamber wall 13 must be surrounded by a metal case or the like. However, there was a problem that the mass production was bad because the cost was soaring and the assembly was troublesome.

Further, in the plastic gas lighter disclosed in Japanese Patent Publication No. 57-32304, which was devised to solve such a problem, in the vaporization chamber, the metal heat collecting cylinder 14 is provided. From the gas tank to the sintered tank S, and the liquefied gas suction means and the vaporization heat supply means are separate members. This required assembly man-hours and there was room for reduction in the number of parts.

Moreover, the sintered core S is usually formed by filling polyethylene powder in a mold and applying mechanical vibration or ultrasonic vibration to the powder, and then sintering the powder to form a core material having a desired shape. Therefore, when the packing degree of the powder is not uniform, the liquefied gas cannot be sucked up uniformly and the flame is not stable. Further, such a sintered core S is weak against bending force and is bent and deformed by some force, and in addition, the bent and deformed sintered core S has no restoring force and is retained as it is. However, the deformed sintered core S often hinders automatic assembly due to automation.

The present invention has been made in view of the above-mentioned conventional problems, and it can be used as a simple means for sucking up liquefied gas and supplying heat of vaporization so as to eliminate the need for a sintered core. By doing so, the purpose is to provide a low-cost gas lighter that can further reduce the number of parts.

[0010]

[Means for Solving the Problems]

 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 the body of the lighter, and an airtight integral with the upper opening of the gas tank. A tank upper lid, an upper opening fitting recess formed integrally in the tank upper lid, a through hole opened in the center of the bottom surface of the fitting recess to communicate with the gas tank, and press fitted into the fitting recess. A valve; a nail-shaped stator fitted to the lower end of the valve via a ring-shaped filter; and a liquefied gas suction member suspended from the lower end of the nail-shaped stator into the gas tank. In the gas lighter configured as above, the liquefied gas suction member is a gas lighter composed of a spiral member having an upper end in contact with the nail-shaped stator and a lower end extending into the gas tank.

Further, the liquefied gas suction member may be composed of a mesh-like body or a porous body having an upper end in contact with the nail-shaped stator and a lower end extending into the gas tank. The liquefied gas suction member is preferably made of a heat conductive material.

[0012]

[Action]

 In the gas lighter of the present invention configured as described above, the liquefied gas suction member uses a spiral member having an upper end in contact with the nail-shaped stator and a lower end extending into the gas tank. While the liquefied gas is transferred along the spiral groove of the spiral member (so-called capillary phenomenon), the heat of the liquefied gas is conducted through the spiral member and is transferred to the nail-shaped stator in the vaporization chamber, so that the vaporization chamber is sufficiently vaporized. It will supply heat. Further, even if a force (external pressure) is applied to the spiral member in the bending direction, the spiral member can immediately return to its original state by the flexible force, which facilitates the assembly and alignment in the gas tank. It does not easily break or bend and deform like conventional sintered cores.

Further, if the liquefied gas suction member is formed of a heat conductive material, the supply of the heat of vaporization is more effectively promoted, and further, the spiral member causes a capillary phenomenon. It goes without saying that the same effect can be obtained by substituting a mesh body or a porous body.

[0014]

【Example】

 Next, an embodiment of the present invention will be described with reference to the drawings. In the figure, A is a gas lighter according to the present invention, and this gas lighter A is, as shown in FIG. Equipped with 3. That is, the gas tank 2 is filled with a liquefied gas, and the tank upper lid 3 is integrated with the upper opening thereof by ultrasonic welding or the like to maintain pressure resistance and airtightness between the two. An ignition mechanism, which will be described later, is mounted on the tank upper lid 3 via an intermediate case 4.

As shown in FIG. 2, a bottomed cylindrical fitting recess 3a having an open top is integrally formed in the tank upper lid 3, and the gas tank is formed at the center of the bottom surface of the fitting recess 3a. A through hole 3b communicating with 2 is opened. The valve 5 is hermetically pressed into the fitting recess 3a.

The valve 5 includes a nozzle lid 5b having a cylindrical lid shape having an opening 5a on the top end surface thereof, and a cylindrical bottomed nozzle bottom plug 5c fitted in the lower opening of the nozzle spiral 5b. A valve chamber 5d is formed in the valve chamber 5d (see FIGS. 2 to 3). In the valve chamber 5d, a gas ejection nozzle 5g is opened at the upper end through an O-ring 5e and a spring 5f to open the nozzle spiral 5b. It is mounted so as to project outward from 5a (see FIG. 2).

As shown in the enlarged view of FIG. 3, the gas ejection nozzle 5g has a hole 5i communicating with the gas ejection passage 5h in the radial direction of the outer peripheral surface, and a lower opening of the gas ejection passage 5h at the lower end. A valve rubber 5j fitted in a sealed state is provided so as to project, and by operating the tip neck portion of the gas ejection nozzle 5g in the withdrawing direction via a valve operating lever 9 (see FIG. 1) described later, The lower end surface of the valve rubber 5j is assembled so as to open and close a valve opening 5k described later.

Further, an O-ring 5m is fitted to the outer peripheral surface of the nozzle bottom plug body 5c via an annular groove to maintain the shielding property with the inner peripheral surface of the fitting recess 3a which contacts the outer periphery. Further, a valve port 5k is opened on the bottom surface of the nozzle bottom plug 5c, and a nail-shaped stator 5n is fitted to the valve port 5k and protrudes. Further, a ring-shaped filter 5o is interposed between the nail-shaped stator 5n and the bottom surface of the nozzle bottom plug 5c.

On the other hand, a coil spring 6 which is a spiral member is mounted below the nail-shaped stator 5n. The coil spring 6 is a compression repellent made of conventional spring steel, and is assembled so that the upper end of the large diameter portion 6a contacts the lower surface of the nail-shaped stator 5n and the lower end extends into the gas tank 2. The coil spring 6 is preferably made of a material having a high thermal conductivity such as copper or aluminum, but a conventional spring coated with a thermal conductive material may be used. At this time, it is desirable to perform surface treatment such as metal deposition so that the spiral grooves on the front and back surfaces are not filled. When mounting the coil spring 6, it may be mounted via a separate holder 12 as shown in FIG. Incidentally, the holder 12 shown in FIGS. 4A, 4B and 4D is formed of a heat conductive material such as metal or a synthetic resin material mixed with a heat conductive powder. It is preferable that the holder 12 shown in FIG. 4 (C) is made of a material, while the holder 12 shown in FIG. 4 (C) may be made of either a heat conductive material or a non-heat conductive material. Further, the holder 12 in FIG. 4 (D) is formed by integrally molding the nail-shaped stator and the holder, and the escape hole of the gas is provided at a desired position such as a top surface or a side wall through an opening (not shown). It has been secured.

On the other hand, as shown in FIG. 1, the ignition mechanism of the gas lighter A has a file that is rotatably supported by a pair of supporting pieces (not shown) integrally formed with the intermediate case 4. It is composed of a wheel 7, a flint 8 mounted under the file wheel 7, and a valve operating lever 9 for operating the gas ejection nozzle 5g in the pulling direction. The igniting stone 8 is housed in the igniting stone supporting hole 4a of the intermediate case 4 fitted in the vertical hole 3c of the tank upper lid 3, and the top surface thereof is pressed against the file wheel 7 by the pushing spring 10. Further, the valve operating lever 9 is provided with support shafts (not shown) projecting on both side surfaces at the center in the longitudinal direction, and both support shafts are provided with shaft holes (not shown) formed in the pair of support pieces. ) Is pivotally attached so that it can swing in the vertical direction. Thus, one end of the valve operating lever 9 is fitted into the neck portion of the gas ejection nozzle 5g through the slit 9a, and the operation piece portion 11 continuous with the other end is pushed down. When operated, the operation lever 9 swings around the support shaft to move the neck portion of the gas ejection nozzle 5g in the pulling direction. A downward columnar portion 11a is integrally formed on the lower portion of the operation piece 11 so as to project into and out of the hollow cylindrical hollow portion 3d formed in the tank upper lid 3.

In the gas lighter A of the present invention configured as described above, the file wheel 7 is rotated by the thumb of the hand holding the lighter body 1 and the operation piece 11 of the valve operation lever 9 is pushed down as it is. As a result, the igneous stone 8 is rubbed to generate a spark on the gas ejection nozzle 5g side, and the neck portion of the gas ejection nozzle 5g is operated in the withdrawing direction so that the lower end surface of the valve gum 5j is the upper surface of the valve opening 3b. The valve opens, the liquefied gas in the gas tank 2 is sucked up to the nail-shaped stator 5n along the spiral groove of the coil spring 6 and the hollow region, and passes through the peripheral surface of the stator 5n to the filter 5o. Reach and vaporize. Further, the vaporized gas passes through the filter 5o, passes through the gap between the nail-shaped stator 5n and the valve hole 5k of the nozzle bottom plug, and further passes through the hole 5i radially opened in the gas ejection nozzle 5g. The gas reaches the inside of the gas ejection passage 5h and is ejected outward from the tip of the gas ejection nozzle 5g. At that moment, the spark ignites and ignites so as to produce a flame of a desired length. Further, if the coil spring 6 is made of a material having excellent thermal conductivity such as copper, heat in the gas tank 2 is more effectively transferred to the nail-shaped stator by thermal conduction, and liquefied gas is vaporized. The required heat of vaporization can be supplied to the vaporization chamber and near the valve to stabilize the flame. The gas lighter A of the present invention shows the desired flame length at room temperature and normal pressure without error, and even under the condition of an external temperature of 5 ° C, there is no hindrance like a conventional lighter using a sintered core. The result was that the conventional sintered core was unnecessary. Further, it goes without saying that the structure of the present invention is simpler than a so-called non-adjustable valve mechanism using a transmission filter such as Juraguard (trade name), and the conventional disposable gas lighter can be used as it is. ..

The 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. Is. For example, although the coil spring 6 is used as the spiral member (liquefied gas suction member) in the present embodiment, the spiral spring 6 is not limited to this, and other spiral members that induce capillary action or A reticulate body or a porous body may be used. Further, in the present invention, the conventional sintered core is not required due to the use of the spiral member, but it is possible to mount and use the sintered core as shown in FIGS. 5 (A) and 5 (B) if necessary. Needless to say. At that time, since the surface area of such a spiral member can be increased, the spiral member can be accommodated and supported in the tank upper lid 3 by making it shorter than the conventional heat collecting cylinder 14 (see FIG. 7). Moreover, it has an advantage that the assembling and mounting can be performed very easily as compared with the conventional metal case 13 (see FIG. 6). In addition to the spiral member referred to in the present specification, in addition to a coil-shaped member formed by winding a wire, a spiral member such as a mainspring, or a suction member having at least a surface provided with a spiral groove, and a so-called so-called spiral member. However, it includes all the spirally and spirally formed members made of a material that induces a capillary phenomenon, and is not limited to the presence or absence of pitch or the shape. Although the present embodiment refers to a so-called flint type lighter, it goes without saying that it can be applied to other oil lighters and piezo lighters, and the present invention includes all of these. To do.

[0023]

[Effect of the device]

 The present invention is configured as described above, and the liquefied gas suction member uses the spiral member whose upper end is in contact with the nail-shaped stator and whose lower end is extended into the gas tank. Is transferred to the nail-shaped stator along the spiral groove of the spiral member, and the heat of the liquefied gas is conducted through the spiral member to the nail-shaped stator in the vaporization chamber, and sufficient heat of vaporization in the vaporization chamber is transferred. Since it can be supplied, it is possible to provide an inexpensive gas lighter that can further reduce the number of parts, such as eliminating the need for the conventionally used sintered core.

Further, the spiral member can immediately return to the original state even if a force (external pressure) is applied in the bending direction, so that the spiral member can be easily assembled and aligned in the gas tank. It does not easily break or bend or deform like a conventional sintered core.

Further, if the liquefied gas suction member is formed of a heat conductive material, the supply of the heat of vaporization is further promoted, so that more effective flame stabilization can be achieved. Needless to say, the object of the present invention can be achieved by replacing the spiral member with a mesh-like body or a porous body that causes a capillary phenomenon, and still achieving the same operation and effect.

As described above, the gas lighter of the present invention does not require the conventionally used sintered core, and has a simple structure, which is suitable for mass production, and can be supplied to users as a low-priced product. The practical value of implementing the present invention is enormous.

[Brief description of drawings]

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

FIG. 1 is a vertical sectional view of a gas lighter according to the present invention.

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

FIG. 3 is an enlarged longitudinal sectional view of an essential part showing a mounted state of a coil spring which is a spiral member.

FIG. 4 is a longitudinal cross-sectional view of an essential part showing another example of mounting the coil spring, and FIG. 4 (A) is a longitudinal cross-sectional view showing a state in which the tip of the coil spring is assembled in the tank upper lid via a holder. FIG. 4 (B) is a vertical cross-sectional view showing a state in which the upper end of the coil spring is held on the inner circumference of the holder, and FIG. 4 (C) is mounted with the coil spring so as to contact the nail-shaped stator on the inner circumference of the holder. FIG. 4D is a vertical cross-sectional view showing the state, and FIG. 4D is a vertical cross-sectional view showing the state in which the upper end of the coil spring is attached to the inner circumference of the holder integrally formed with the nail-shaped stator.

FIG. 5 (A) is a vertical cross-sectional view showing a state in which a conventional sintered core is held in a coil spring, and FIG. 5 (B) is a nail-shaped fixation of the conventional sintered core in the coil spring. It is the same longitudinal section showing the state where it was attached so that it might contact a child.

FIG. 6 is a vertical sectional view showing a conventional gas lighter.

FIG. 7 is a longitudinal sectional view of a main part of a gas lighter showing another conventional example.

[Explanation of symbols]

 1 Lighter Main Body 2 Gas Tank 3 Tank Top Lid 3a Fitting Recess 3b Through Hole 3c Vertical Hole 3d Cavity 4 Intermediate Case 4a Firestone Support Hole 5 Valve 5a Open 5b Nozzle Spiral 5c Nozzle Bottom Plug 5d Valve Chamber 5e O-ring 5f Spring 5g Gas Jet nozzle 5h Gas jet passage 5i Perforation 5j Valve rubber 5k Valve mouth 5m O-ring 5n Nail-shaped stator 5o Filter 6 Coil spring 7 File wheel 8 Firing stone 9 Valve operating lever 10 Push spring 11 Operating piece 11a Columnar part

Claims (4)

[Scope of utility model registration request] 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 that is opened in the center of the bottom surface of the fitting recess and communicates with the inside of the gas tank, a valve that is press-fitted into the fitting recess, and a nail-shaped stator that is fitted to the lower end of the valve through a ring-shaped filter. A gas lighter comprising a liquefied gas suction member suspended from the lower end of the nail-shaped stator into the gas tank, wherein the liquefied gas suction member has an upper end in contact with the nail-shaped stator and a lower end. A gas lighter comprising a spiral member extended in the gas tank. 2. The gas lighter according to claim 1, wherein the liquefied gas suction member is a net-like body having an upper end in contact with the nail-shaped stator and a lower end extending into the gas tank. . 3. The gas according to claim 1, wherein the liquefied gas suction member is made of a porous material having an upper end in contact with the nail-shaped stator and a lower end extended into the gas tank. Writer. 4. The gas lighter according to claim 1, wherein the liquefied gas suction member is made of a heat conductive material.