JPH0113223Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a safety device for a portable gas stove using a small detachable gas cylinder.

[Conventional configuration and its problems]

When using a portable gas stove, first press the set lever to press the nozzle at the end of the gas cylinder to the insertion opening of the gas appliance tap, then open the gas path with the appliance tap knob to introduce gas to the burner and ignite it. When extinguishing a fire, there is no problem if you turn the appliance valve knob to block the gas path, but often the appliance valve knob is left in the open position and only the set lever is operated to cut off the gas and extinguish the fire. There were times when I had to do it.

In the case of this type of fire extinguishing method, when the gas cylinder is set with the set lever at the time of relighting, the appliance stopper remains in the open position and raw gas is injected from the burner, which is extremely dangerous and can cause various accidents. It was something that had become familiar to me.

[Purpose of invention]

In view of the above drawbacks, the present invention improves safety by locking the appliance stopper knob before setting the set lever, and locking the set lever when turning the appliance stopper knob to the open position after setting the set lever. be.

[Structure of the idea]

In order to achieve the above object, the present invention stores a gas cylinder in a removable manner on one side of the main body equipped with a burner, and installs and removes the gas cylinder from the appliance stopper by operating the set lever up and down. The equipment valve is equipped with a safety valve that operates when the internal pressure of the gas cylinder rises above a certain value, and a sliding plate is provided that is linked when the equipment valve is opened and closed, and the safety valve is activated by the sliding plate when the equipment valve is closed. When the gas cylinder is pressed and set, gas is communicated from the gas cylinder to the appliance stopper, and before the set lever is set, a sliding plate is brought into contact with and locked to the set lever to prevent rotation of the appliance stopper shaft. In addition to making it impossible to open the cap, after the set lever is set, the above-mentioned lock is released to enable rotation of the instrument cap shaft, and after the cap is opened, the set lever is locked by a sliding plate to prevent operation of the set lever. This invention relates to a safety device for portable gas stoves.

[Explanation of Examples]

Next, embodiments of the present invention will be described with reference to the drawings.
FIG. 2 is a plan view using the device of the present invention, and 1 is a stove body, which is equipped with a combustion chamber 3 equipped with a burner 2 and a cylinder chamber 5 into which a gas cylinder 4 is detachably installed. An instrument stopper 6 equipped with a safety valve that senses abnormal pressure and shuts off the gas path is attached to one end of the cylinder chamber 5, and by pressing down the set lever 7, the tip nozzle of the gas cylinder 4 is pressed into the insertion opening of the instrument stopper 6. A cylinder pressing mechanism 8 is provided. Reference numeral 9 denotes an instrument stopper knob attached to the instrument stopper shaft 10 to open and close the gas passage. Reference numeral 11 denotes a sliding plate, which is slidably mounted on the mounting board 12 and interlocked with the instrument stopper shaft 10. The sliding plate 11 has a square-shaped step formed at its left end, and has a vertical hole 1 bored at the left end of the mounting board 12.
3, and when the device stopper shaft 10 is fully opened, it is moved to the left so that the left end of the sliding plate 11 overlaps the hole 13.
The set lever 7, which is vertically movably inserted into the set lever 7, is locked to prevent it from rising. When the instrument stopper shaft 10 is fully rotated, the sliding plate 11 is moved to the right and moved away from the hole 13, and the set lever 7 is unlocked. When the set lever 7 is pushed up in this state, the sliding plate 11 is further pushed and slid to the right, and is moved to a position where the safety valve 15 of the appliance stopper 6 is pressed. The safety valve 15 does not protrude from the appliance stopper 6 during normal combustion, but when the gas pressure rises abnormally as described above, the safety valve 15 operates and protrudes from the appliance stopper 6 and prevents gas from the gas cylinder 4. The circuit is closed to prevent gas from entering the appliance tap 6, and if gas cannot be supplied regardless of whether the appliance tap 6 is opened, it is necessary to press the safety valve 15 to reconnect the gas path. Thus, when the gas cylinder 4 is removed from the appliance stopper 6 by pushing up the set lever 15, the sliding plate 11 is simultaneously moved to open the safety valve 15.

Next, I will discuss the effect of this proposal. First, the gas cylinder 4 is placed in the cylinder chamber 5, and the set lever 7 is pushed down to press the tip nozzle of the gas cylinder 4 into contact with the insertion opening of the instrument stopper 6. Next, when the instrument stopper shaft 10 is rotated to open the stopper, the sliding plate 11 is interlocked, slides to the left, overlaps the slot 13, and locks the set lever 7 to prevent it from rising. (See Figure 4 A) In this way, the gas in the gas cylinder 4 is supplied to the appliance plug 6.
is supplied to the burner.

An appropriate amount of play is provided in the interlocking mechanism between the appliance plug shaft 10 and the sliding plate 11, so that after the set lever 7 is locked, the appliance plug shaft 10 is independently rotated slightly in the closing direction, and the combustion flame is released. In order to prevent the sliding plate 11 from moving inadvertently during this period, the sliding plate 11 is pressed to the left by a pressing spring 14. In this case, the set lever 7 is
Since it is always locked, the set lever 7 cannot be operated while the instrument stopper shaft 10 remains in the open position.

Next, when extinguishing a fire, when the appliance stopper shaft 10 is rotated to the fully closed position, the sliding plate 11 is also interlocked and slid to the right to unblock the hole 13, as shown in Figure 4 (b). Move to position. (In this case, the gas cylinder remains set.) To relight the gas in this state, it is only necessary to rotate the appliance stopper shaft 10 again.

Next, to release the set of gas cylinders 4, push up the set lever 7, and the cylinder pressing mechanism 8 will move the gas cylinders 4 away from the appliance stopper 6, and at the same time, the upper end of the set lever 7 will be pressed against the inclined surface 16 of the left edge of the sliding plate 11. Since the edges rise while slidingly contacting each other, the sliding plate 11 is pushed to the right against the elastic force of the push spring 14 and prevents the instrument stopper shaft 10 from rotating to open the stopper. (See Figure 4 C.) [Effect of the invention] The present invention prevents the rotation of the instrument stopper shaft 10 with the set lever 7 before the set lever 7 is set, and sets the instrument stopper knob 9 to the open position after the set lever 7 is set. Since the set lever 7 is locked by the sliding plate 11 when the device is rotated to the position shown in FIG. By making it impossible to extinguish only the set lever 7 due to incorrect operation when extinguishing a fire, it is possible to prevent the disadvantage of raw gas spouting out by setting the gas cylinder 4 with the appliance tap 6 in the open position, and it does not require any extra parts. There is also an effect that the structure can be constructed by only partially changing the shape of the conventional sliding plate without having to do so.

[Brief explanation of the drawing]

Fig. 1 is a front view showing the main parts of the present invention, Fig. 2 is a plan view of a gas stove according to an embodiment of the present invention, Fig. 3 is a sectional view taken along line A-A in Fig. 2, and Fig. 4 A to C are the present invention. FIG. 1 is the stove body, 2 is a burner, 4 is a gas cylinder, 6 is an appliance tap, 7 is a set lever, 10 is an appliance tap shaft, 11 is a sliding plate, 13 is a slot, and 15 is a safety valve.

Claims (1)

[Claim for Utility Model Registration] A gas cylinder is removably housed on one side of the main body equipped with a burner, and the gas cylinder is installed and removed from the appliance stopper by operating the set lever up and down. The equipment stopper is equipped with a safety valve that operates when the internal pressure rises above a certain value, and a sliding plate is provided that is linked when the equipment stopper is opened and closed, so that the safety valve is pressed by the sliding plate when the equipment stopper is closed. When the gas cylinder is set, gas is communicated from the gas cylinder to the appliance stopper, and before the set lever is set, a sliding plate is brought into contact with the set lever to prevent the axis of the appliance stopper from rotating and the valve is opened. In addition, after the set lever is set, the lock is released to allow rotation of the instrument stopper shaft, and after the set lever is opened, the set lever is locked by a sliding plate to prevent operation of the set lever. A safety device for portable gas stoves.