JPS6344657Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a butane gas torch.

Gas torches have traditionally been used in various fields. For example, it is used for waxing work in gingival formation. Gas torches are also used for melting, casting, soldering, etc. of various materials.

In conventional gas torches, the gas is first discharged using a gas opening/closing dial, and then the gas is ignited using a push button or the like.

For this reason, with this type of gas torch, many operations are required before igniting it, and it takes time from when gas starts to come out until it ignites, and gas is often wasted.

The present invention was made in view of the above circumstances, and aims to provide a butane gas torch that is easy to operate until ignited, wastes less gas, and is safe at low cost.

The butane gas torch of the present invention vaporizes butane gas, mixes it with air, and then burns it with a nozzle.It includes a gas tank for storing butane gas, a torch mixer connected to the gas tank through a tube, and discharge and stop of the discharge of butane gas. a gas opening/closing lever for switching the gas opening/closing lever, a positioning plate fixed to the gas opening/closing lever, a leaf spring installed to engage with a groove provided in the positioning plate, and a gas opening/closing lever located between the gas tank and the torch mixer. It is equipped with a gas amount control valve that can adjust the flow rate of gas, and a spark generation unit that ignites the butane gas mixture ejected from the nozzle of the torch mixer, and the spark generation unit is also operated by the gas opening/closing lever, and the gas The butane gas is discharged and ignited with one opening/closing lever, and after ignition, the gas opening/closing lever automatically returns to the gas discharge position, and thereafter the butane gas mixture is maintained in a combustion state,
Furthermore, the gas opening/closing lever can stop the discharge of butane gas, and the apparatus is also characterized in that it can be used even when placed on a flat surface such as a tabletop.

The butane gas torch of the present invention is very easy to operate because it can discharge, ignite, and stop discharging gas with one lever as described above. Therefore, the time from when gas starts to be discharged until it is ignited is short, and there is almost no wastage of gas.

Furthermore, the butane gas torch of the present invention does not employ a complicated valve mechanism, so it can be manufactured at low cost. Furthermore, the butane gas torch of this invention does not use a dial valve to open and close the gas.
It is extremely safe and can extinguish fires reliably and quickly. In addition, it can be carried freely and used in the hand, and can also be used when placed on a flat surface such as a tabletop. Furthermore, the gas amount can be adjusted with one hand.

Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.

Butane gas as fuel is placed in a gas tank 1. A tube 3 is connected to a gas discharge port 1a of the gas tank 1 via a gas amount control valve 2. The gas discharge amount is adjusted by rotating the gas amount adjustment valve 2 with the lever 2b. The other end of the tube 3 is connected to a torch mixer 4. Butane gas is mixed with air in torch mixer 4. In this way, butane gas becomes a butane gas mixture.

The torch mixer 4 is composed of a nozzle 5 and a mixer body 6. That is, as shown in FIG. 5, the male threaded portion 5b formed in the nozzle lower portion 5a of the nozzle 5 engages with the female threaded portion 6c of the mixer body 6. When the nozzle 5 and the mixer main body 6 are screwed together in this manner, even if a foreign object becomes clogged in the nozzle 5, it can be removed, making maintenance very easy. Further, the reason why the lower part 5a of the nozzle is narrower than the upper part of the nozzle 5 is to make it difficult for heat to be transmitted to the mixer main body 6 side. By doing so, the butane gas torch of the present invention can be used more safely. It is more effective to make the nozzle lower part 5a narrower than to dissipate heat by providing fins.

An air control device 7 having a hole 7a is placed over the end of the mixer body 6 on the nozzle 5 side. The air control device 7 is held by a spring 8 so as to be rotatable. The amount of air flowing into the gas path 6b (FIG. 5) is determined by the air inflow hole 6a (fifth) formed in the hole 7a and the mixer body 6.
Adjust according to the positional relationship shown in the figure). The lever 7b rotates the air control device 7 (FIG. 1). Although there are devices in which the amount of air inflow is adjusted by moving the spacer up and down, it is structurally simpler and more accurate to control the air by providing a freely rotating air control device 7 as in the present invention.

The gas opening/closing lever 9 is supported by support members 10a and 10b.
It is rotatably mounted on a shaft 11. A positioning plate 12 is fixed to the gas opening/closing lever 9. As shown in FIG. 4, the groove 1 of the positioning plate 12
The gas opening/closing lever 9 is stopped at the extinguishing position A and the gas discharge position B by the engagement between 2a and 12b and the leaf spring 13.

The lower end 9a of the gas opening/closing lever 9 is connected to a lever member 15 via a spring 14. The lever member 15 is connected to the connecting member 2a of the gas amount control valve 2. A tube 3 is connected to the connecting member 2a. When the connecting member 2a is pulled toward the tube 3, gas is discharged from the gas tank 1. The connecting member 2a is always biased toward the gas tank 1, and gas will not be discharged unless force is applied to the connecting member 2a. When the gas opening/closing lever 9 is moved to the gas discharge position B, the connecting member 2a is pulled by the lever member 15 and gas is discharged. The gas opening/closing lever 9 switches between discharging and stopping the discharge of butane gas.

The butane gas mixture ejected from the nozzle 5 contains
A fire is ignited by a spark generating unit. In the embodiment shown in the figure, a piezoelectric unit 16 is used as the spark generating unit (see Figures 1 to 3).
figure). Electrical energy is generated in the power generation section 16a of the piezoelectric unit 16, and sparks fly from the electrode 16c toward the nozzle 5. 16d is an insulator.

Electrical energy is generated by pressing the terminal 16b of the power generation section 16a (see FIG. 4). The terminal 16b of the power generation section 16a is pushed by the gas opening/closing lever 9. That is, when the gas opening/closing lever 9 is moved from the gas discharge position B to the ignition position C, the lower end 9a of the gas opening/closing lever 9 pushes the terminal 16b. The pressed terminal 16b is returned to its original position by a built-in spring. Therefore, the gas opening/closing lever 9 automatically returns from the ignition position C to the gas discharge position B.

The butane gas torch of the present invention shown in FIGS. 1 to 3 does not have a case. However, when actually used, a case 19 is provided as shown in FIG. A gas opening/closing lever 9, a gas amount adjustment lever 2b, and an air control lever 7b come out from the case 19.

Next, the action of the butane gas torch of the present invention will be explained.

When the gas opening/closing lever 9 is moved from the extinguishing position A to the gas discharge position B, the connecting member 2a is pulled by the action of the lever member 15, and butane gas is sent from the gas tank 1 to the torch mixer 4. The butane gas is mixed with air in the torch mixer 4 to form a butane gas mixture, which is ejected from the nozzle 5 to the outside.

Here, move the gas opening/closing lever 9 to the gas discharge position B.
When further moved from ignition position C to ignition position C, electrode 16c
A spark flies from the to the nozzle 5, igniting the butane gas mixture.

In reality, the gas opening/closing lever 9 is moved from the extinguishing position A to the ignition position C all at once.

The gas opening/closing lever 9 automatically returns from the ignition position C to the gas discharge position B. Therefore, when using the butane gas torch of the present invention, the gas opening/closing lever 9 is in the gas discharge position B.

When the gas opening/closing lever 9 is returned from the gas discharge position B to the extinguishing position A, the lever member 15 no longer acts on the connecting member 2a, and gas discharge from the gas tank 1 is stopped.

As described above, the butane gas torch of the present invention can discharge, ignite, and stop the discharge of gas with a single lever.

In addition, the butane gas torch of this invention is easy to hold in your hand because the gas opening/closing lever automatically returns to the gas discharge position after the gas opening/closing lever automatically ignites, and the butane gas mixture is kept in a combustible state. It can also be used by placing it on a flat surface such as a tabletop. Furthermore, you can adjust the gas amount with one hand.

[Brief explanation of the drawing]

FIG. 1 is a right side view showing an example of the butane gas torch of the present invention, FIG. 2 is a left side view of the butane gas torch shown in FIG. 1, FIG. 3 is a perspective view of the butane gas torch shown in FIG. The figure is a partial view showing the vicinity of the gas opening/closing lever of the butane gas torch shown in Fig. 1, Fig. 5 is a partial view showing the joint between the nozzle of the butane gas torch shown in Fig. 1 and the mixer body, and Fig. 6
The figure is a perspective view showing an example of the butane gas torch of the present invention provided with a case. 1...Gas tank, 2...Gas amount control valve, 3...
...Tube, 4...Torch mixer, 5...Nozzle, 6...Mixer body, 7...Air control device, 9...Gas opening/closing lever, 12...Positioning plate, 15...Lever member, 16...Piezoelectricity Unit, 19...case.

Claims (1)

[Scope of utility model registration request] In a gas torch, butane gas is vaporized, mixed with air, and then burned in a nozzle.
a gas tank for storing butane gas; and a torch mixer connected to the gas tank by a tube;
The device is provided with a gas opening/closing lever located between the gas tank and the torch mixer for switching between discharging and stopping discharging of butane gas, a positioning plate fixed to the gas opening/closing lever, a leaf spring set to engage with a groove provided in the positioning plate, a gas amount control valve located between the gas tank and the torch mixer for adjusting the gas flow rate even during combustion, and a spark generating unit for igniting the butane gas mixture sprayed from the nozzle of the torch mixer, and the gas opening/closing lever is configured to stop at the gas discharge position and the fire extinguishing position by the engagement of the groove of the positioning plate with the leaf spring, and the operation of the spark generating unit is also performed by the gas opening/closing lever, and the gas opening/closing lever 1
This butane gas torch is characterized in that it is configured to discharge and ignite butane gas by means of the gas opening and closing lever, and after ignition, the gas opening and closing lever is automatically returned to the gas discharge position by the leaf spring, after which the butane gas mixture is maintained in a combustion state, and further the discharge of butane gas can be stopped by the gas opening and closing lever, and is also configured to be freely portable and can be used by holding it in the hand, and can also be used when placed on a flat surface such as a table.