JPS5974428A - Gas lighter - Google Patents

Abstract

PURPOSE:To enable to prevent liquefied gas from being ejected directly to the outside and to obtain stable flame when a gas lighter is ignited, by closing a spring chamber hermetically by applying a seal to the contact surface between a cylindrical spring chamber and a valve body. CONSTITUTION:When a nozzle 2 is pushed downward by a lever (not shown in the drawing), liquefied gas is passed between a valve seat 4 and a cylindrical sleeve 5 incorporating therein a spring and then introduced into a space formed between the cylindrical sleeve 5 and a valve body 6. Thereafter, the liquefied gas is carried into a gas outlet passage 2a via a gas inlet passage 2b and ejected upward at a high speed. Here, since a seal is applied to the contact surface between the cylindrical sleeve 5 and the valve body 6 and the cylindrical sleeve 5 is made as small as possible, liquefied gas ejected by depression of the nozzle 2 is ejected wholly from the nozzle without staying in a spring chamber 5a, so that a stable flame can be obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a gas lighter, particularly to improvements in its valve mechanism.

(1) The general valve mechanism of conventional gas lighters is such that a concave or convex portion is provided at the top of the nozzle, a lever is fitted into or abuts this portion, and when the lever is pressed, the nozzle is pulled up by the lever action. The valve is thereby opened and the liquefied gas is discharged from the gas outlet passage of the nozzle.

However, this type of gas lighter requires a concave or convex part on the top of the nozzle to hook the lever, and the shape of the lever is also complicated, and the number of parts increases, resulting in high costs. Therefore, it is particularly unsuitable for disposable gas lighters that are produced at low cost and in large quantities.

To solve this problem, a gas lighter was proposed in which the valve was opened by pushing down on the nozzle. This type of gas lighter does not require complicated shapes for the nozzle and lever, so it is easy to manufacture.Moreover, the number of parts is small and costs can be kept low, making it an inexpensive disposable gas lighter. It was preferable.

However, with gas lighters that open the valve by pushing down on the nozzle, when the nozzle is pushed down to open the valve, some of the liquefied gas enters and accumulates in the spring chamber, and when the next ignition occurs, There was a problem in that the liquefied gas accumulated in the spring chamber was not completely vaporized and was forcefully ejected from the nozzle in its raw state, resulting in a dangerous flame when ignited.

The present invention has been made based on the above-mentioned viewpoints, and its objectives are to reduce the number of parts, to be easy to manufacture, and to produce liquefied gas under any usage conditions. To provide an inexpensive disposable gas lighter that does not eject directly and can always produce a flame of a stable length when ignited.

The gist of this is that a main body case equipped with a liquefied gas tank that stores liquefied gas has a nozzle that can discharge the liquefied gas, a valve body that can open and close a gas passage to the nozzle, and In a gas lighter which is provided with a spring that normally presses the valve body (3) to the closed position, and is configured to open the valve body and release gas by pushing down the nozzle, the spring described in "2" is a cylindrical spring. The valve body is housed in a chamber, the valve body is slidably inserted therein, and the contact surface between the spring chamber and the valve body is sealed to airtightly close the spring chamber.

Hereinafter, the details of the present invention will be specifically explained with reference to the drawings.

FIG. 1 is a partially enlarged explanatory diagram of a gas lighter according to the present invention, and FIG. 2 is a partially enlarged explanatory diagram showing the state at the time of ignition.

In Figures 1 and 2, 1 is the main body case, 2 is the nozzle,
2a is a gas outlet path, 2b is a gas introduction path, 3 is a nozzle case, 4 is a valve seat, 4a is an insertion hole, 5 is a cylindrical spring tube, 5a is a spring chamber, 6 is a valve body, 7 is a spring,
8.9 is an O-ring, 10.11 is a microporous filter, 1
2 is a stator, 13 is a wick, and 14 is a flame.

(4) The nozzle 2 is movable up and down within a certain range within the nozzle case 3, and is airtightly inserted between the nozzle case 3 and the nozzle case 3 via an OIJ song, and is operated by a lever (not shown). It is configured to be pushed downward and pushed upward by the action of a spring 7 that applies elastic force to the valve body 6.

The valve seat 4 is located below the nozzle 2, - an insertion hole 4a is provided on the surface of the valve seat 4 facing the nozzle 2, and the gas outlet path 2a of the nozzle 2 is inserted into the insertion hole 4a. It is inserted so that it can be moved up and down. Also, valve seat 4
A cylindrical spring tube 5 whose portion facing the gas outlet path 2a of the nozzle 2 is open is housed inside the cylindrical spring tube 5, and a spring chamber 5 inside the cylindrical spring tube 5 is housed inside the cylindrical spring tube 5.
A valve body 6 is slidably housed in a, and normally closes the liquefied gas flow path by the elastic force of a spring 7. The cylindrical spring tube 5 in which the spring 7 is housed is formed as small as possible, and a seal is provided on the contact surface between the spring chamber 5a inside the cylindrical spring tube 5 (5) and the valve body 6. is applied, so that liquefied gas does not enter the space,
Furthermore, even if liquefied gas were to enter, it would not be suddenly vaporized and ejected when ignited.

The valve body 6 is made of a soft material such as oil-resistant rubber, and opens the gas flow path when pressed downward by the nozzle 2, and closes the gas flow path at the same time as the nozzle 2 is pushed back upward. It plays a role.

The flame 14 can also be adjusted using a microporous filter 10.1.
By appropriately selecting the effective area, thickness, hole size, density, etc. of 1, the flow resistance of the liquefied gas passing through it can be adjusted and the flow rate of the liquefied gas can be adjusted, thereby completely vaporizing the liquefied gas. and controls the flow rate.

In conventional gas lighters that open the valve by pushing down the nozzle 2, the contact surface between the cylindrical spring tube 5 and the valve body 6 was not sealed, so when igniting, the nozzle 2 was pushed down to release the liquid. (6) When the liquefied gas is ejected from the gas outlet path 2a, although most of the liquefied gas is ejected from the nozzle 2, a portion of it enters the spring chamber a and accumulates therein. Moreover, the liquefied gas accumulated in this spring chamber a is not completely vaporized when the next gas lighter is ignited, but is vigorously jetted out from the outlet passage 2a of the nozzle 2 in its raw form, so that the flame 14 at the time of ignition is extremely high. There was a problem that it could become unstable or become unstable.

On the other hand, in the gas lighter according to the present invention, when the nozzle 2 is pushed down by a lever (not shown), the liquefied gas passes between the valve seat 4 and the cylindrical spring tube 5, It further enters the space formed between the cylindrical spring chamber 5 and the valve body 6, and the nozzle 2
The gas passes through the gas introduction path 2b, enters the gas outlet path 2a, and is ejected upward at high speed. Moreover, since the contact surface between the cylindrical spring tube 5 and the valve body 6 is sealed, and the cylindrical spring tube 5 is formed as small as possible, the pressure of the nozzle 2 causes the jet (7 ) The liquefied gas to be discharged does not accumulate inside the spring chamber 5a, and is all ejected from the nozzle 2.

Since the present invention is constructed as described above, when the gas lighter according to the present invention is used, a seal is provided on the contact surface between the cylindrical spring chamber and the valve body, so that even when igniting, the liquefied gas does not leak out. Since the liquefied gas does not enter the spring chamber and accumulate, the liquefied gas does not eject raw, and a stable flame can always be obtained when ignited.

Moreover, since the number of parts of the gas lighter can be reduced and manufacturing is easy, it is possible to provide an inexpensive disposable gas lighter with higher commercial value.

Note that the present invention is not limited to the embodiments described above. That is, for example, in this embodiment, the spring for applying elastic force to the valve body is housed in the spring chamber, but the valve body is bonded to the nozzle and the spring is formed by the nozzle and the valve seat. 8) It may be constructed so as to be stored within the space. In addition, it is possible to glue the nozzle to the valve body and place the spring in the space formed by the nozzle and valve seat (1), but it is also possible to manufacture it without providing a spring chamber. The material of the filter, the mounting position of the O-ring, etc. can be freely changed within the scope of the purpose of the present invention, and the present invention encompasses all of them.

[Brief explanation of the drawing]

FIG. 1 is a partially enlarged explanatory diagram of a gas lighter according to the present invention, and FIG. 2 is a partially enlarged explanatory diagram showing the state at the time of ignition. 1--------------- One body case 2--
----------・・---------------・-Nozzle 2 a
----------------- Gas outlet path 2 b
−−−−−−−−−−−−−−−−Gas introduction path 3−−
−−−−−−−−−−−−−−−−−− Nozzle case 4
=−=〜−−−−−−−−−−−−−−−1−Valve seat 4
a ---------- One insertion hole 5---------
------------Cylindrical spring tube (9) 5 a ---------------- Spring chamber 6----- −・−−−−−−−11~
---Valve body 7-------------1~-----
−Spring 8.9−−−−−−−−−−−−−−
0 ring 10.11-------=-Microporous filter 12--------- One stator 13--
−−−−−−−−−−−−−−−Suction core, 14−−−−
−−−−−−−−−−−−−−−Ichino patent applicant
Hisao Iwahori Agent (7524) Shotabe Mogami (10)

Claims (1)

[Claims] A main body case equipped with a liquefied gas tank that stores liquefied gas, a nozzle that can discharge the liquefied gas, a valve body that can open and close a gas passage to the nozzle, and a spring that always presses the valve body to a closed position. In the gas lighter, the spring is housed in a cylindrical spring chamber, and the valve body is slidably slidable. The above gas lighter is characterized in that the spring chamber is airtightly closed by applying a seal to the contact surface between the spring chamber and the valve body.