JPH0319445B2 - - Google Patents

Description

Detailed Description of the Invention (Field of Industrial Application) The present invention provides a gas control system for table gas stoves and other gas appliances that ignites and extinguishes the fire by pressing a button, and adjusts the firepower by rotational operation. This invention relates to a valve operating device.

(Prior art and problems) In table gas stoves and other gas appliances, a fire power adjustment lever (needle valve) is used to ensure that the main burner has a medium to high flame input in order to improve ignitability when igniting. Generally, the construction is such that the linear lever for operation returns to high flame, or the adjustment lever is linked to move to high flame when igniting, or the bypass passage is opened to ignite high flame. The mechanism is troublesome and structurally complex, and the operating force of the linear lever becomes large due to frictional resistance, resulting in problems in operation and handling.

Currently, for example, table gas stoves have a maximum heat power of 3000 to 4000 Kcal/b, and a minimum heat power of 3000 to 4000 Kcal/b.
A small one of 300 to 500 Kcal/b is required, but since it is difficult to ignite with a fire power of around 300 to 500 Kcal/b, the opening of the needle must be adjusted so that the fire power is close to maximum when ignited. I'm maxing it out.

(Technical Problem) Therefore, in the present invention, ignition and extinguishing can be turned on and off using a single pushbutton. In addition to the push-button operation, the flame power adjustment by the needle control valve is also carried out with a single-touch rotation operation using the same push button, and when igniting, the needle valve cannot be pressed unless it is at least in the range of low to high heat. However, the technical challenge is to make the range from low flame to pilot flame a child lock area so that the push button cannot be pressed.

(Means for solving the problem) In order to solve the above technical problem, the present invention
Valve case body 3 with gas inlet 1 and gas outlet 2
, first and second push rods 4 and 5 are provided independently so as to be pushed in against spring pressure;
a main valve 7 provided on the push rod to be opened by the push rod 4; a thermoelectric safety valve 8 pushed open by the second push rod 5; and a thermoelectric safety valve 8 provided in the passage to the gas outlet 2 to open the gas It consists of a needle control valve 9 that can move forward and backward to limit the flow rate of the valve, and a push button 11 that is fitted into a button guide 10 that is integrally provided with the valve case body so as to be operated in the pushing direction and the rotation direction. The push button 11 includes a push piece 13 that sequentially pushes the first and second push rods 4 and 5 and the ignition switch 12 when pressed, and a connecting pin that moves the needle control valve 9 forward and backward when rotated. 1
4 and a needle cam 15 engaged therewith, and a child lock is applied so as to prevent entry from the starting position to the low heat range, and the push-in prevention is released from the low heat to high heat range. A locking groove 30 having a retractable locking pin 30a with spring pressure applied and a relief portion 30c at one end.
A child lock mechanism 30 is provided.

(effect) The above technical means works as follows.

In the state before starting, both the main valve 7 and the safety valve 8 are closed. From this state, when the push button 11 is turned from low heat to high heat and pressed, the push piece 13 pushes the first and second push rods 4 and 5, and the main valve 7 and safety valve 8 open simultaneously.

Therefore, the gas flows from the inlet 1, through the main valve 7, through the passages A and B, through the safety valve 8, through the passages C and D and the needle control valve 9, and flows out to the gas outlet 2.

At the same time, the ignition switch 12 is pressed via the actuator 16, igniting the ignition and igniting the effluent gas.

When the push button 11 is between the starting position a and the low heat b, the locking pin 30a fits into the locking groove 30b provided in the rotating direction as shown in FIG. The pushbutton 11 cannot be pressed in the so-called child lock area.

Press the push button 11 from low heat B to medium heat C or high heat d.
When turned to the range of , it locks with the push button 11.
0b moves to the right as shown in FIG. 6, the locking pin 30a is pushed out from the relief portion 30c against the urging force of the leaf spring 30d and disengaged from the locking groove 30b. Therefore, the pushbutton 11 is unlocked in the pushing direction.

When the push button 11 is pushed in the full stroke and released, the push button 11 is pressed against the spring 17 of the main valve 7.
The total spring pressure of the spring 25 of the second push rod 5 and the needle spring 19 pushes the main valve 7 back to the combustion position, and the main valve 7 is held open to enter the combustion state.

When the push button 11 is rotated in this state, the needle connecting pin 14 is locked in the groove 11a on the inner surface of the push button and rotated, so the movement is converted into a linear motion by the action of the cam groove 15a of the needle cam 15, and the needle hole diameter The firepower is adjusted by changing the width of the area.

Next, when the push button 11 is pressed again, the main valve 7 is returned to the closed state by the aforementioned total spring pressure, and the main valve 7 is closed.

(effect) The present invention has the following unique effects.

By pressing and rotating the push button, igniting and extinguishing it by pushing it, and adjusting the fire power by rotating it, the ignition, extinguishing, and adjustment of the fire power can be easily, quickly and reliably performed with one button.

In the so-called child lock area between the starting position and low heat, the lock pin fits into a locking groove provided in the direction of rotation of the push button, so even if a child or other child accidentally pushes it, it will not be locked. Since it cannot be pressed, ignition does not occur and safety can be improved.

When igniting, the pushbutton must be turned from low heat to high heat before it can be pressed, eliminating the need for a mechanism to return high heat or opening a bypass valve, and reducing the push load required to do so, making operation easier. is easy.

The structure is simple, the number of parts is reduced, and a product with low cost and high practicality can be obtained.

(Example) Preferred embodiments of the invention are shown below.

The push button 11 is formed into a hollow cylindrical shape, rotates like a dial, and presses. It is fitted into the button guide 10 so that it can be moved in and out in a push-type manner, and the head 11b is made to protrude from the panel board 11c.

The push piece 13 is integrally formed with the tip of the push button 11 in a flange shape.

The needle actuation mechanism 20 has the following configuration. The needle control valve 9 is a linear body 2 integrated with the main body 3.
1 so as to be rotatably and axially slidably fitted,
The needle hole 22 at the tip is changed in width by moving forward and backward.

The needle cam 15 is integrally formed into a cylindrical shape at the end of the linear body 21, and an X-shaped groove is provided in the cylindrical portion to form a cam groove 15a.

The needle connecting pin 14 passes through the needle control valve 9 so that the protruding portion passes through the cam groove 15a and is engaged with the vertical groove 11a on the inner surface of the push button.

The needle spring 19 is assembled into the hollow interior of the push button 11, and the needle spring 19 is inserted between the inner surface of the button and the needle control valve 9.
is compressed and interposed between the end face of the

The main valve 7 is directly attached to the first push rod 4 and operates together with the push rod.

Gas inlet 1 and passage A communicate with each other via a main valve 7, passages B and C communicate with each other via a safety valve 8, and passage C and gas outlet 2 communicate with each other via a needle control valve 9. .

The child lock mechanism 30 has the following configuration. The lock pin 30a is provided so as to penetrate through the button guide 10 so as to be freely retractable, and the head 30a' is attached to the leaf spring 3.
It is pressed to 0d. The leaf spring 30d is fixed to a part of the button guide 10 with a screw 30e, and its free end is brought into elastic contact with the head of the lock pin. The locking groove 30b is formed to have a length corresponding to the range a to b in the circumferential direction (rotation direction) of the outer surface of the push button 11, and a relief portion 30c is formed at the extreme end. When the lock pin 30a comes out of the relief portion 30c, it rides on the smooth outer peripheral surface of the push button 11. Therefore, in this state, the push button 11 is free to press or rotate.

The combustion position holding mechanism 40 is configured such that when the push button 11 is pushed in and released in the range from low heat b to high heat d, it returns to the intermediate position and is held at that position, and when the push button is pressed again at that position, the combustion position is completely ignited. A so-called push to return to the original position. Consists of push mechanism. This combustion position holding mechanism 40 is connected to the button guide 1.
This mechanism is comprised of a cam plate 41, a slide pin 42, a slider 44, etc. provided between the push button 11 and the push button 11, but since this mechanism is not the gist of the present invention, a detailed explanation will be omitted.

[Brief explanation of the drawing]

The drawings show embodiments of the present invention, the first
The figure is a side view of the gas control valve, FIG. 2 is a plan view of the same, FIG. 3 is a front view of the same, FIG. 4 is a vertical side view of the same, FIG. 6 is a sectional view of the child lock mechanism with the lock pin released, FIG. 7 is a sectional view taken along line B--B in FIG. 2, and FIG. 8 is a sectional view taken along line C--C in FIG. 2. 1... Gas inlet, 2... Gas outlet, 3... Valve case body, 4... First push rod, 5... Second push rod, 7... Main valve, 8... Safety valve, 9... Needle Control valve, 10... button guide, 11... push button, 12... ignition switch, 13... push piece,
14... Connecting pin, 15... Needle cam, 20
...Needle operating mechanism, 30...Child lock mechanism.

Claims (1)

[Claims] 1 First and second push rods 4 and 5 are independently provided in a valve case body 3 having a gas inlet 1 and a gas outlet 2 so as to be pushed in against spring pressure.
, a main valve 7 provided on the push rod to be opened by the first push rod 4, a thermoelectric safety valve 8 pushed open by the second push rod 5, and the gas outlet 2.
A needle control valve 9 is provided in a passageway to limit the flow rate of gas and is movable back and forth, and a button guide 10 is fitted into the valve case body so as to be operated in the push direction and the rotation direction. The push button 11 includes a push piece 13 that sequentially pushes the first and second push rods 4 and 5 and the ignition switch 12 when pressed, and the needle control valve 9 when rotated. The connecting pin 14 and the needle cam 15 engaged with the connecting pin 14 move forward and backward.
A needle operating mechanism 20 consisting of a needle operating mechanism 20 and a retractable lock pin with spring pressure applied so that a child lock is engaged so that it is impossible to push in from the starting position to a low heat range, and the push-in prevention is released in a range from low heat to high heat. 30a and a locking groove 30b having a relief portion 30c at one end.
1. A gas control valve operating device comprising: 0.