JPS6335893B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a primarily disposable lighter that uses liquid such as alcohol as fuel.

Disposable lighters that use liquefied gas such as butane as fuel are widely used, but this liquefied gas is a valuable fossil fuel, and when exposed to sunlight and becomes hot, the pressure increases rapidly. There was a problem that there was a risk of the container bursting, and that there were always dangers involved in storing and filling the gas, and transporting the product. Also, for this reason, the main body case needs to be strongly manufactured using high-grade resin.
There was also a cost problem.

On the other hand, conventionally known liquid fuel lighters have a wick, and are configured so that fuel is guided from inside the fuel tank to the outside of the tank by the wick and ignited. In such a configuration, it is necessary to always cover the tip of the wick with a suitable cap to prevent fuel leakage, and therefore, when igniting, this cap must be removed before ignition can be performed. It was quite inconvenient. In addition, this cap usually did not allow the wick to be completely closed airtight, which caused problems such as an oily smell inside the pocket while the cap was being carried.

The present invention has been made based on the above-mentioned viewpoints, and its purpose is to use alcohol, etc., which is liquid and safe at room temperature as a fuel, and to have no wick and therefore a cap. The object of the present invention is to provide a lighter that does not require any air-tightness, has a simple structure, and is completely airtight.

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

FIGS. 1 and 2 are sectional views showing one embodiment of a lighter according to the present invention, and FIGS. 3 and 4 are sectional views showing essential parts of another embodiment. . Thus, both FIG. 1 and FIG. 3 show the state when the fire is extinguished, and FIG. 2 and FIG. 4 both show the state when the fire is ignited.

In Figures 1 and 2, 1 is the main body, 2 is the operating rod, 3 is the fuel outlet valve, 4 is the file wheel, 5 is the shaft, 6 is the flint, 7 and 8 are the springs, 9 is the stopper, and 10 is the liquid fuel, 11 is a fuel derivative, 12 is an O-ring,
13 is a windshield.

The main body 1 has a fuel tank 1a, a piston chamber 1b, an auxiliary fuel chamber 1c, a ventilation groove 1d, a ventilation hole 1e, and an operating rod hole 1f, and a liquid fuel 10 such as alcohol is injected into the fuel tank 1a.

The fuel deriving body 11 consists of a block-shaped head 11a and an elongated tail 11b.The head 11 is housed in the auxiliary fuel chamber 1c of the main body, and the tail 11b is housed in the auxiliary fuel chamber 1.
It is suspended into the fuel tank 1a through a small hole provided in the partition wall between c and the fuel tank 1a, and its tip is immersed in the liquid fuel 10.

This fuel outlet is made of a porous material such as fibrous material or foam having appropriate flexibility, and draws up liquid fuel to its head 11a by capillary action.

The operating rod 2 consists of a valve support arm 2a, a finger hook 2b, a slide portion 2c, and a file axle support arm 2d.
A mounting hole 2e and a ventilation groove 2f are provided at the free end of the valve support arm 2a, and the fuel outlet valve 3 is firmly mounted through the mounting hole 2e. The file axle support arm 2d is also provided on the front side of the paper, and a shaft 5 that rotatably supports the file wheel 4 is attached thereto. The slide portion 2c has a cylindrical shape, and a flint stone 6 is placed inside it.
A hole 2g into which a spring 7 is inserted is provided, and a guide hole 2h through which a stopper 9 fixed to the main body 1 passes is provided at the lower end. The slide portion 2c is inserted into the operating rod hole 1f together with the spring 8, and is held slidably in the axial direction within the range allowed by the stopper 9 and the guide hole 2h. Therefore, due to the elastic force of the spring 8, the operating rod 2 is normally at the end of its movement upward in the figure, that is, at the extinguishing position, but when the top of the file wheel is pressed by a finger and rotated to ignite the fire. is moved downward to the end of its movement, ie, to the ignition position, as shown in FIG. Thus, when the finger is caught on the finger hook 2b, the operating stick 2 is continuously held at the ignition position.

On the other hand, the lower end of the fuel outlet valve 3 is connected to the piston portion 3.
(a) The upper end is a fire pan 3b, and inside thereof are provided fuel outlet passages 3c, 3d that communicate laterally from the bottom of the fire pan, and a ventilation groove 3e is provided on the side surface. The opening of this fuel outlet path 1c opens outward from the O-ring 12 in the extinguishing position, and therefore the fire pan 3b is insulated from the fuel tank 1a and the auxiliary fuel chamber 1c in the main body 1. However, at the ignition position, it moves below the O-ring 12 and communicates with the auxiliary fuel chamber 1c.

Therefore, an operation for ignition is performed, and the fuel outlet valve 3 descends within the piston chamber 1b, protrudes into the auxiliary fuel chamber 1c, compresses the head 11a of the fuel outlet body 11, and releases the contained fuel. When the fuel is squeezed out, the squeezed out fuel flows into the fire pan 36 through these fuel outlet paths 3c and 3d, and is connected to the file wheel 4 and the flint stone 6.
ignited by a spark generated by friction with
Burn.

When the finger is released from the finger grip part 2b, the fuel outlet valve 3 rises again to the extinguishing position due to the elastic force of the spring 8, but at this time, due to the negative pressure generated as the piston part 3a retreats, the fire pan part 3b, the fuel remaining in the fuel outlet paths 3c and 3d is collected again into the auxiliary fuel chamber 1c, and the fire is extinguished at the same time.

In addition, the main body 1 has a ventilation groove 1d and a ventilation hole 1e.
It is recommended that the operating rod 2 be provided with a ventilation groove 2f, and the fuel outlet valve 3 be provided with a ventilation groove 3e, and communicated with each other at the ignition position to balance the internal pressure of the fuel tank 1a with the outside air.

This will prevent the internal pressure from becoming lower than the outside air and failing to ignite, or the flame becoming gradually shorter during ignition, or conversely preventing the internal pressure from becoming too high and causing fuel to spray out during ignition. It is.

Next, let us explain FIGS. 3 and 4.
These figures show other configuration examples of the fuel outlet valve, with FIG. 3 showing it in the extinguishing position and FIG. 4 showing it in the ignition position.

In the figure, 15 is the main body, 16 is the fuel outlet valve,
17 is a fuel deriving body, and 18, 19 and 20 are O-rings. In this embodiment, the O-ring 18,
This embodiment differs from the previous embodiment in that all the valves 19 and 20 are provided on the fuel outlet valve 16 side.

The main body 15 is provided with a fuel tank 15a, a piston chamber 15b, an auxiliary fuel chamber 15c, a ventilation groove 15d, and a vent hole 15e.
6c, 16d, 16e, and a ventilation groove 16f are provided, and three O-ring grooves are provided on the side surfaces thereof, and O-rings 18, 19, and 20 are attached. Further, the fuel deriving body 17 includes a head portion 17a and a tail portion 17b.

The operation of this fuel outlet valve 16 does not require any further explanation. Such a valve structure is completely equivalent to the valve structure described above.

Since the present invention is constructed as described above, it is possible to provide a safe lighter using a fuel that is liquid at room temperature, such as alcohol.

Note that the configuration of the present invention is not limited to the above-mentioned embodiments, and includes, for example, the shape and structure of the main body, operation stick, fuel derivation body, fuel derivation valve, and other members, and the configuration of the ignition device and the fuel derivation valve by reciprocating slides. The design of the mechanism etc. for causing this 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 sectional view showing one embodiment of the lighter according to the present invention in the extinguished state, FIG. 2 is a sectional view in the ignited state, and FIGS. 3 and 4 are FIG. 7 is a cross-sectional view showing another embodiment in an extinguished state and an ignited state, respectively. 1, 15...Main body, 2...Operation stick, 3, 16...
...Fuel outlet valve, 4... File wheel, 5... File axle, 6... Flint, 7, 8... Spring, 9...
...stopper, 10...liquid fuel, 11,17...
Fuel derivation body, 12, 18, 19, 20...O ring.

Claims (1)

[Scope of Claims] 1. A liquid fuel lighter comprising a main body equipped with a tank containing liquid fuel and a fuel derivation device and an ignition device, in which the fuel derivation device comprises the components described in the following items a to d. The above liquid fuel lighter characterized by comprising: (a) It is made of a soft porous body capable of sucking liquid fuel, and has a lumpy head and an elongated tail, the head being inserted into an auxiliary fuel chamber provided in the main body, and the tail being connected to the auxiliary fuel chamber and the fuel tank. The fuel outlet body is inserted into the fuel tank through a small hole in the partition wall between the fuel tank and the fuel tank. (b) One end thereof is slidably fitted into a piston chamber communicating with the auxiliary fuel chamber, and is slidable back and forth between an extinguishing position and an ignition position, and when moving from an extinguishing position to an ignition position. Its end protrudes into the auxiliary fuel chamber to form a piston part that compresses the head of the fuel delivery body, and the other end part is located outside the main body even at the ignition position and burns the fuel at the time of ignition. A fuel outlet is formed from the bottom of the fire pan to an opening provided on the side surface thereof, which communicates with the auxiliary fuel chamber at the ignition position and does not communicate with the auxiliary fuel chamber at the extinguishing position. Outlet valve. (c) An operating mechanism that connects the fuel outlet valve to the ignition device and maintains it in the extinguishing position at all times, and that allows the fuel outlet valve to be moved to the ignition position when the ignition device is activated. (d) A sealing device capable of airtightly sealing the fuel tank and auxiliary fuel chamber in the fire extinguishing position.