JPH0739860B2 - Firepower control device for gas appliance plugs - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat control device for a gas appliance plug.

2. Description of the Related Art In recent years, as a heating power adjusting method for household gas appliances, particularly gas tables, a needle having a flow restriction hole is placed in a bypass circuit housed in the valve body, and the valve body housed in the bypass circuit is heated. It is often adopted that the control lever is moved in the axial direction to open and close the bypass circuit.

Hereinafter, an example of the conventional thermal power control device will be described with reference to FIG. In the figure, 1 is an operating knob, 2 is a guide plate, which slidably fits through a U-shaped receiving plate 3 and a fixed plate 4, and slides in the axial direction against a spring 5. Reference numeral 6 denotes an operation shaft pressed by the guide plate 2, and reference numeral 7 denotes a valve element provided on the operation shaft 6 and moving together with the operation shaft 6. 8a, 8
b is a needle with a flow restriction hole, 9a and 9b are bypass circuits
This is an operation shaft that has a valve body that slides in the axial direction to open and close 10 and the main circuit 11, and normally closes the valve body with springs 12a and 12b.

In the conventional thermal power control device shown in FIG. 4, when the operating knob 1 is pushed, the guide plate 2 slides in the axial direction, and the operating shaft 6
Is moved in the axial direction, the valve body 7 and the safety valve 16 are opened, and gas is supplied from the gas supply port 17 to the bypass circuit 15 side. In addition, by operating the thermal power control lever 13, the guide plate
The bypass shaft 10 and the main circuit 11 can be opened by sliding the operation shafts 9a and 9b through the shafts 14a and 14b in the axial direction. By the way, FIG. 4 shows a state in which the valve of one operation shaft 9a is opened and only the bypass circuit 10 side is opened, and the gas that has passed through the valve body 7 passes through the bypass circuits 10 and 15 and is gas amount at the needles 8a and 8b. Is reached and reaches the main circuit 11 to enter the "medium" state of adjusting the heat power. Also, operate the thermal power control lever 13 to operate the control shafts 9a
Is slid, and the passage is closed by the valve bodies provided on the operating shafts 9a and 9b, the valve body 7 and the safety valve 16 are closed as described above.
Is open, the gas from the gas supply port 17 is needle 8a.
The main circuit 11 is reached via the chisel and the heat power is adjusted to "weak". Also, operate the firepower control lever 13 to
By sliding a and 9b and opening the valve bodies provided on the operating shafts 9a and 9b to open the passage, the heat power adjustment becomes "strong".

Problems to be Solved by the Invention However, in the above configuration, when the operating shafts 9a, 9b are left open for a long time at low temperature, the O-rings 16a, 16b
Even if the operating lever 13 is operated with a force stronger than the restoring force of the springs 12a and 12b, the operating shafts 9a and 9b are fixed to the operating shafts 9a and 9b.
May not slide, the valve element may be held in the open state and the heat power may not be adjusted. In addition, control of gas firepower
Because it depends on a and 9b, the heat power can only be switched between three levels of "strong", "medium" and "small", and it is not only possible to obtain the delicate calorie adjustment necessary for home-cooked cooking, but also gas The number of parts also increases as the number of seals increases, resulting in increased instability.

The present invention solves such a problem. The number of parts is reduced, the heat power of gas can be adjusted with a simple structure, and the heat power can be adjusted by fixing the O-ring due to being left for a long time at a low temperature. It is an object of the present invention to provide a thermal power control device that prevents the heat power from being disabled.

Means for Solving the Problems In order to solve this problem, the present invention provides a device stopper body,
An operating lever for adjusting the heat power, an operating lever mounting plate fixed to the instrument stopper body for pivotally supporting the operating lever, and a flow rate limiting hole that moves in the axial direction in conjunction with the operating lever. A needle for limiting the amount of gas is provided, and a spring interposed between the needle and the operating lever mounting plate forms a right angle with the inclined portion provided on the outer periphery of the needle accommodating portion of the instrument stopper main body with respect to the axial direction of the needle. The pin fixed to the needle is pressed against the needle, and the operation lever mounting plate is provided with an inclined portion with a gap from the inclined portion provided on the instrument stopper body.

Operation With this configuration, when the operating lever is operated, the needle is rotated, and the spring fixed between the needle and the operating lever causes the pin fixed to the needle to be attached to the inclined portion provided on the outer periphery of the needle housing portion of the instrument stopper body. While pressing the needle, slide the needle in the axial direction to adjust the heating power, and even if the needle cannot be slid due to the O-ring sticking due to leaving it at a low temperature for a long time, the pin fixed to the needle will operate the lever. By forcibly sliding it by the inclined portion provided on the mounting plate, it is possible to prevent the failure of the thermal power control due to the sticking of the O-ring.

Embodiment Hereinafter, an embodiment of the present invention will be described with reference to the drawings (FIGS. 1 to 3).
It will be described based on FIG.

In the figure, 21 is a thermal power button, 22 is an operating shaft operated by the ignition button 21, 23 is a valve element fixed to the operating shaft 22, and 24 is a safety valve. By pushing the ignition button 21, the operating shaft 22 slides, the safety valve 24 and the valve body 23 open, and the gas supply port
The gas supplied from 25 reaches the main circuit 26. Reference numeral 27 is an operation lever, 28 is an operation lever mounting plate that rotatably supports the operation lever 27, and 29 is a needle having a flow rate limiting hole 30. The gas reaching the main circuit 26 has a flow rate limiting hole 30 in the needle 29 and a gap between the needle 29 and the instrument stopper body 31.
Pass 32 and reach gas outlet 33. In addition, the operating lever 27
When the rotary lever is rotated around the vertical axis, the groove 34 provided in the operating lever 27 is aligned with the needle 29 at a right angle to the axial direction of the needle 29.
Since it engages with one pin 35 fixed to both sides of the needle 29, the needle 29 is rotated and the other pin 35 fixed to the needle 29 is placed between the operation lever mounting plate 28 and the needle 29. The spring 36 moves along the inclined portion 37 provided on the outer periphery of the needle attachment portion of the instrument stopper body 31,
Slide the needle 29 axially downward. Then, when the needle 29 moves downward, the gap 32 between the tip portion 38 of the needle 29 and the instrument plug main body 31 becomes smaller, and finally the gap 32 disappears, and the gas passes through only the flow rate restriction hole 30 and the gas outlet 33.
And the fire power becomes "weak". Further, as the needle 29 moves upward, the gap 32 becomes larger, the amount of gas also gradually increases, and when the gap 32 becomes a certain amount or more, the thermal power becomes “strong”. When the digestion button 41 shown in FIG. 3 is pressed, the operating shaft 22 slides, the valve body 23 closes, and the gas supply is stopped. Fire power adjustment button when squeezed like "weak"
When the operating lever 27 is moved to the position of the "strong" thermal power by the return lever moving to 41, the other pin 35 fixed to the needle 29 is raised by the rotation of the operating lever 27 along the inclined portion 37, that is, the needle 29 is lifted. Raise it and stop at that position.

When the sealing O-ring 39 attached to the needle 29 and the instrument plug body 31 are fixed at a low temperature for a long time and the operation lever 27 is rotated about the vertical axis, the operation lever mounting plate is used. If the fixing force of the O-ring 39 becomes larger than the force of the spring 36 placed between the needle 28 and the needle 29, the needle 29 may not slide in the axial direction and the heat power may not be adjusted properly. In this case, the instrument stopper main body in which the pin 35 fixed to the needle 29 rotated by the groove 34 of the operation lever 27 is provided on the operation lever mounting plate 28
By hitting the lower surface of the inclined portion 40 having a gap with respect to the inclined portion 37 of 31, the needle 29 is pressed downward via the pin 35 on the lower surface of the inclined portion 40 and moves downward. , The needle 29 is forcibly slid in the axial direction, and as a result, the O-ring 39 is released from being fixed and the heat power can be adjusted. Note that the other pin 35 of the needle 29 is located at the upper end of the inclined portion 37 when left standing for a long time.

As described above, according to the present invention, the pin fixed to the needle having the flow rate limiting hole moves along the inclined portion provided on the outer periphery of the needle housing portion of the instrument stopper body, thereby axially moving the needle. Since the sliding lever can adjust the heat power and the operating lever mounting plate having an inclined portion with a gap with respect to the inclined portion of the instrument plug body is provided, the O-ring provided on the needle can be fixed at a low temperature for a long time. It is possible to prevent thermal power maladjustment, reduce the number of parts compared to the conventional example, improve the assembly workability, and make the apparatus itself compact.

[Brief description of drawings]

1 to 3 show an embodiment of the present invention.
FIG. 1 is a sectional view of a thermal power control device, FIG. 2 is a perspective view of a main part of the thermal power control device, FIG. 3 is an overall perspective view of the thermal power control device, and FIG. 4 is a sectional view of a main part of a conventional thermal power control device. . 27 …… Operating lever, 28 …… Operating lever mounting plate, 29 …… Needle, 30 …… Flow rate limiting hole, 31 …… Main body of instrument plug, 35 ……
Pin, 36 …… Spring, 37 …… Inclined part, 39 …… O-ring, 40 …… Inclined part

Claims (1)

[Claims] 1. An instrument stopper main body, an operating lever for adjusting heat power, an operating lever mounting plate fixed to the instrument stopper main body for pivotally supporting the operating lever, and a flow rate limiting hole. An inclination provided on the outer periphery of the needle housing portion of the instrument stopper body by a spring interposed between the needle and the operation lever mounting plate, the needle interlocking with the operation lever and moving in the axial direction to limit the gas amount. The pin fixed to the needle at a right angle to the axial direction of the needle, and the operation lever mounting plate is inclined with a gap from the inclined portion provided on the instrument stopper body. A firepower control device for a gas appliance plug with a section.