JPH0480520A - Gas cooking device and gas equipment safety device - Google Patents

Abstract

PURPOSE:To cause a flame power adjusting lever to be always returned back to a strong flame power position under an igniting operation by a method wherein a returning lever for always moving a flame power adjusting lever to a strong flame power position is provided to operate such that one end contacting to a movable part of an engaging device moved around one fulcrum point in cooperation with an igniting operation is applied as a force applying point and the other end may act as an acting point. CONSTITUTION:An operating button 2 is pushed into an inside part along an inner side surface of a button guide 19. An L-shaped projection 6b disposed at a side surface of an engagement device 6 is also moved rearwardly in cooperation with a movement of the operating button 2, a lower end 18d of a rear returning lever 18a is pushed rearwardly, resulting in that the returning lever 18a is rotated and moved in a counterclockwise direction around a fulcrum point of the bearing part 18b, and a tapered upper end 18c of the returning lever 18 moves a needle pin 3h toward a forward and upward direction perpendicular to the taper. As a result, the flame power adjusting lever 5 is rotationally moved around a fulcrum point 5b in a clockwise direction and finally reaches a strong flame power position.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a gas cooking appliance having a gas appliance tap, an igniter and a safety device.

Conventional technology Conventional one-button operation button for ignition and extinguishing,
When a gas cooking appliance with a single flame adjustment lever is lit at low heat, a strong flow of gas flows through the burner only while the control button is pressed in, and when the button is released, the gas flow returns to low. Moreover, after the burner is ignited, you have to keep pressing the control button until the heating element is sufficiently warmed up. Furthermore, a safety device that stops the gas supply when the burner is inadvertently extinguished is often installed at a location independent of the operation button.

The above-mentioned conventional example will be described below with reference to FIG. 19.

As shown in the figure, an operation button 2 having a fulcrum at the top thereof is provided in a rectangular hole (not shown) provided in an operation section 1.

To ignite the appliance, press the operation button 2 and open the shutoff valve 3b, safety valve 3c, and pilot valve 3d in the gas appliance stopper 3 behind it.No matter what the firepower is, the gas will ignite. Since it passes through the pilot passage 3e, the maximum amount of gas is supplied to the burner 8 via the nozzle 14. At the same time, when the operation button 2 is pushed in in conjunction with the movement of the locking device 6, the ignition switch 7 becomes conductive and the high voltage generated in the igniter 12 is transferred between the ignition plug 11 and the burner cap 9. An electric spark discharge is generated at the ignition section between the two. The gas is ignited by the spark generated by the electric spark, causing ignition. Here, the thermal element 10 is heated by the flame and a thermoelectromotive force is generated, which causes the safety valve 3c
hold open. When the hand is released from the operating button 2, the pilot valve 3e is closed, and at the same time, the ignition switch 7 is also turned off and the spark stops. When the fire power adjustment lever 5 is moved from this state to the left or right, the amount of gas supplied to the burner camp 9 is adjusted by the needle 3g of the fire power adjustment section. If you press the button 2 again, the gas appliance tap 3. The shutoff valve 3b is closed, and no gas is supplied to the burner 8, resulting in an extinguished state. Furthermore, when the safety device lever 13a is moved in the locking direction in this state, the protrusion 13b of the safety device lever 13a is moved against the protrusion 2 at the bottom of the operation button 2.
By moving to the rear of point b and fixing the operating button 2 to the operating portion 1, the operating button 2 cannot be pushed in and ignition operation becomes impossible. In other words, this locking operation prevents a dangerous situation such as an accidental or unconscious ignition of the gas appliance, thereby improving the safety of the gas appliance.

Problems to be Solved by the Invention However, in such a configuration, when igniting at the slightly lower position of the firepower adjustment lever 5, a strong flow of gas is supplied to the burner 8 while the operation button 2 is pressed. When the operation button 2 is released after ignition, the gas flow rate becomes weak. On the other hand, in actual cooking, the fire power is often set to high when igniting, and the fire power is set to low at the end of cooking, which increases the need to move the fire power adjustment lever 5 to the strong position each time the ignition is started.

Furthermore, at the time of ignition, it is necessary to continue pressing the operation button 2 until the burner 8 is ignited and then enough electromotive force is generated for the flame to spread throughout the burner and for the thermal element 10 to adsorb the safety valve 3c.

Furthermore, when activating the safety device following the extinguishing operation, or when releasing the safety device from the locked state and performing the ignition operation, the operation button 2. It is necessary to operate the safety device lever 13a at two locations, resulting in poor operability. Another problem was that the number of safety device components increased.

Therefore, the present invention has a configuration that has an operation button for igniting and extinguishing the fire with one button, and one fire power adjustment lever, so that no matter what position the fire power adjustment lever is in, the fire power adjustment lever will always adjust the fire power by the ignition operation. The first objective is to provide a gas cooking appliance that returns to the high position.

The second purpose is to provide an ignition device that allows ignition to be performed by simply pressing the operation button once, and even if the user immediately releases the ignition button, the ignition can be reliably ignited.

A third object is to provide a gas appliance tap safety device that improves the operability of the safety device, has a small number of parts, and is easy to assemble.

Means for Solving the Problems In order to achieve the above-mentioned first object, the present invention provides a gas appliance having one operation button for ignition and extinguishing, one sliding fire power adjustment lever, and a gas shutoff function. spigot and ignition of said operating button.

A locking device that opens and closes the gas passage of the gas appliance tap by a fire extinguishing operation, a fire power adjustment section that regulates the amount of gas passing through by sliding the fire power adjustment lever, and a movement of the ignition operation around one fulcrum. A return lever is provided that always moves the fire power adjustment lever to a high fire power position, with one end in contact with the movable part of the locking device that moves in conjunction with the locking device as a point of force, and the opposite end as a point of action.

Further, in order to achieve the second object, the present invention provides a switch for determining the open/close state of a locking device that opens and closes a gas passage of a gas appliance tap, and an igniter for generating an electric spark discharge in an ignition part of a burner. After the switch is electrically connected to a thermal element that generates a thermoelectromotive force at both ends thereof by the flame of the burner, and a safety valve unit that holds the gas passage open by the electromotive force generated by the thermal element, the safety valve unit and A circuit is provided for supplying a constant current to each of the igniters for an optimal constant time.

In addition, in order to achieve the third object, the present invention includes a ring-shaped button guide fixed to the operating section on the front of the gas appliance, and a ring-shaped button guide that slides back and forth along the inner surface of the button guide to ignite and extinguish with a single button. a cylindrical operation button that performs the operation, and a convex leaf spring that protrudes from the outer circumferential surface of the operation button on a part of the outer peripheral wall of the operation button, and a sliding surface of the operation button on which the leaf spring slides on the inner surface of the button guide. The first groove in the moving direction is placed in two places, and the L-shaped second groove is placed in the sliding direction and in the circumferential direction.
In addition to providing a groove, the second fitting protrusion is provided on the side surface of the ignition/extinguishing button.

Function: The gas cooking appliance of the present invention transmits the pushing movement of the operation button to the fire power adjustment lever via the take-back lever when operating the ignition, even if the fire power adjustment lever is in any position.
It acts in the direction of returning the firepower to the high position, so the firepower is always in the high position after ignition.

In addition, when operating the ignition, the ignition switch provided on the locking device becomes conductive at the same time as the operation button is pushed in, and a constant current is supplied from the circuit to the igniter and the safety valve for a fixed period of time, so the ignition operation is disabled. The ignition operation continues for a certain period of time even if the button is pressed once and the button is released.

In addition, the safety device for gas appliances is made up of two parts: the ignition/extinguishing button and the button guide, and the operation button functions as both the ignition/extinguishing button and the lock lever, so the configuration is simple and has a small number of parts. , locking, or unlocking can be performed continuously, improving operability. Furthermore, the button guide and operation button can be assembled as a unit on the operation surface, improving ease of assembly. do.

EXAMPLE A gas cooking appliance according to an example of the present invention will be described below with reference to the drawings. Note that the same reference numerals are used for the same parts as in the conventional example.

FIG. 1 is an exploded perspective view of essential parts of the gas cooking appliance of the present invention. The operation button 2 slides back and forth along the inside of a button guide 19 fixed to the operation section 1.

An instrument plug 3 fixed to a gas pipe 4 is located behind the operation button 2. The sliding movement of the operating button 2 back and forth is changed by the locking device 6 into an opening/closing movement of the gas passage of the gas appliance tap 3. The gas in the gas pipe 4 is supplied to the appliance stopper 3 with an open gas passage.
After passing through and having its flow rate regulated by the nozzle 14, it is supplied to the burner 8.

On the other hand, an L-shaped protrusion 6b provided on the side surface of the locking device 6
moves in conjunction with the operation button 2, and when operating the ignition, the bearing uses the portion 18b as a fulcrum and pushes backward using the lower end 18d of the return lever 18a as a point of force, so the tapered portion 18c at the upper end of the return lever 18a is operated as the point of action. Move the button 2 direction and use the firepower adjustment lever 5 via the needle pin 3h.
Move to a position with stronger firepower.

At the same time, the diamond-shaped protrusion 6b provided on the side surface of the locking device 6 holds down the actuator of the ignition switch 7 and conducts between the A terminal 7b and the B terminal 7C. A constant current is applied to the safety valve for a certain period of time to forcibly hold the safety valve. On the other hand, a constant current flows from the printed circuit board 15 to the ignition high-voltage coil 12 for a certain period of time, causing an electric spark discharge between the ignition plug 11 and the ignition flame opening of the burner cap 9, and causing the gas supplied to the burner 8 to The flame is ignited and spreads around the entire circumference of the burner cap 9. This flame heats the thermal element 10 and generates a thermoelectromotive force across it. The electromotive force keeps the safety valve open after forced adsorption for a certain period of time. Further, power for the printed circuit board 15 is supplied by a battery 17 in a battery case 16 attached to the rear surface of the main body.

The operation will be explained in detail below.

FIG. 2 is a perspective view of the operation button 2, the button guide 19, and the gas appliance tap unit in the extinguished state.

FIG. 3 is a sectional view of the gas appliance tap unit in the extinguished state, and the stop valve 3b and safety valve 3C in the gas appliance tap 3 are closed. Further, the actuator 7e of the ignition switch 7 is not pressed down, and the A terminal 7b and the B terminal 7c are not electrically connected.

FIG. 4 is a perspective view of the operation button 2, the button guide 19, and the gas appliance plug unit during ignition operation, and shows the operation button 2.
is pushed inside along the inner surface of the button guide 19. In conjunction with the movement of the operation button 2, the L-shaped protrusion 6b provided on the side surface of the locking device 6 also moves rearward, and further pushes the lower end 18d of the return lever 18a rearward. The bearing rotates counterclockwise about the portion 18b as a fulcrum, and the tapered upper end 18c of the return lever 18 moves the needle bin 3h forward and upward in the vertical direction of the taper. the result,
The heating power adjustment lever 5 rotates clockwise around the fulcrum 5b to a position where the heating power is high. At the same time, the actuator 7e of the ignition switch 7 is pressed into the L-shaped protrusion 6b, and the A terminal 7b and the B terminal 7c are electrically connected.

FIG. 8 is a time chart showing the presence or absence of power supplied to the igniter 12 and the safety valve 3c from the printed circuit board 15 having the timer circuit after the A terminal 7b and the B terminal 7c of the ignition switch are electrically connected. After the ignition switch 7 is turned on, current is supplied to the igniter for 5 seconds, and an electric spark discharge is generated at the ignition flame opening of the ignition plug 111 and the burner cap 9 for 5 seconds. On the other hand, a current necessary to attract and hold the safety valve 3c is applied to the safety valve 3c for 7 seconds after the A terminal 7b and the B terminal 7c of the ignition switch 7 are electrically connected.

Further, since the safety valve 3c is opened by the ignition pushing operation, the safety valve 3c is definitely closed for 7 seconds.

After 7 seconds, the safety valve 3c is activated by the thermal electromotive force of the thermal element 10.
will remain open until the fire is extinguished.

FIG. 5 is a sectional view of the gas appliance plug unit during the above-mentioned ignition operation. Since the slide 6c and the shaft 31 also move rearward in conjunction with the movement of the operation button (not shown), the shutoff valve 3b opens. On the other hand, since the safety valve 3c is also pushed open by the tip of the shaft 31, the gas supplied from the gas pipe 4 flows through the gas passage 3f to the thermal power adjustment section. on the other hand,
The maximum amount of gas flows through the needle 3g of the heating power adjustment section when the heating power is moved to the strong position by the return lever 18a.

FIG. 6 is a perspective view of the operation button 2, the button guide 19, and the gas appliance plug unit in a combustion state, and the L-shaped protrusion 6b provided on the side of the operation button 2 and the locking device 6 corresponds to the ignition position. Since it has returned to the intermediate position of the extinguishing position, the L-shaped protrusion 6b and the lower end 18d of the return lever 18a do not come into contact with each other, while the tapered upper end 18c of the return lever 18a and the needle pin 3h also Even in such a firepower position, there is no contact. In this state, the firepower can be adjusted by sliding the firepower adjustment lever 5 left and right.

FIG. 7 (al is a cross-sectional view of the gas appliance plug unit in the combustion state, and the needle 3g is at the minimum firepower position.

FIG. 7fbl is a cross-sectional view of the gas appliance plug unit in the combustion state, and the needle 3g is at the maximum firepower position. From this state, when the operating button 2 is pressed again and released, the extinguishing state shown in FIG. 4 is achieved.

In this embodiment described above, once the operation button 2 is pressed,
Even if you release your hand immediately, the fire power adjustment lever 5 will return to the strong position, electric spark discharge will occur to the burner 8 for 5 seconds, and an adsorption current will also be applied to the safety valve 3c for 7 seconds, so that the ignition operation will not be possible. It is excellent, and the ignition is also true. In addition, the take-back mechanism of the firepower adjustment lever 5 has a small number of parts.
It is also easy to assemble.

Next, the configuration of the safety device of the operation button 2 will be explained.

FIG. 9 is a perspective view of the button guide 19 and the operation button 2, and the operation button 2 has a rectangular projection 2b on the side surface.

In addition, there is an inverted groove 1 on the upper side of the button guide 19.
9b is provided. The protrusion 2b is an L-shaped groove 1.
9b.

Next, the movements of the operation button 2 and the button guide 19 during ignition operation and when locking the safety device will be explained using FIGS. 11 and 12. The character for normal ignition and extinguishing is number 11.
As shown in the figure. Due to the normal movement of the operation button 2 in the front-back direction, the protrusion 2b on the side surface of the operation button 2 forms an inverted groove 1.9b.
It moves along the groove 19c parallel to the sliding direction of the operation button 2. An arrow 20 indicates the movement of the operation button 20 back and forth.

The arrow 21 indicates the position of the operating button 2 relative to the button guide 19 when it is in the ignited state. The arrow 22 indicates the position of the operation button 2 relative to the button guide 19 in the extinguished state.

The movement of the lock is shown in Figure 12. In the case of locking, the projection 2b is moved to the circumferential groove 19d of the inverted-shaped groove 19b of the button guide 19 by turning the operation button 2 to the left from the extinguished state. Even if an attempt is made to push in the operation button 2 to ignite in this state, the protrusion 2b hits the wall of the groove 19d of the button guide 19 and cannot be pushed in. An arrow 23 indicates the movement of the operating button 2 relative to the button guide 19 during the locking operation.

Next, the spring unit for positioning the safety device will be explained. Figure 13 shows the button guide 19 and operation button 2.
is a perspective view seen from the rear side of the main body, in which a convex leaf spring 2C with a hem expanding on both sides is fitted into the side opposite to the square projection 2b of the operation button. The inner surface of the button guide 19 has a sliding groove 19f and a locking groove 19g parallel to the sliding direction of the operation button 2, and the leaf spring 2C fits into the sliding groove 19f.

FIG. 14 shows the leaf spring insertion part provided on the side surface of the operation button 2, the leaf spring 2c, and the coil spring 2d.
2, two vertical portions 2f of the leaf spring 2c fit into two grooves 2g provided on the side surface of the operation button 2.

Further, the coil spring 2d is inserted between the leaf spring 2c and the protrusion 2g between the two grooves after the leaf spring 2c is assembled on the side surface of the operation button 2.

Figure 15 shows a leaf spring 2 on the side of the operation button 2.
2 is a perspective view of the leaf spring 2c assembled with the leaf spring 2c and the coil spring 2d. Since the leaf spring 2c has a protrusion 2h provided on the side surface of the operation button 2, it will not come off.

FIG. 16 is a perspective view from the rear side of the main body in a state in which the operation button 2 is assembled into the button guide 19 and can be ignited.

Fig. 17 shows that the operation button 2 is assembled into the button guide 19, and by further turning the operation button to the left (from the front), the leaf spring 2c climbs over the side wall 19h between the sliding groove 19f and the lock groove 19g, and the leaf spring 2C is a perspective view from the rear side of the main body in a state where the lock groove 19g is fitted, and the safety device does not easily return from the operating state to the ignition possible state.

FIG. 18 is a sectional view of the main part of the button guide 19 with the operation button 2 assembled into the button guide 19 and inserted into the circular hole provided in the operation part 1 from the front with the safety device activated. It is fixed to the operating section 1 because it is hooked on the claw 19i provided on the outer peripheral side surface of the operating section 1 or on the bent portion 1b on the inner end surface of the circular hole of the operating section 1.

In the present embodiment described above, the operation button serves both as an operation button and a safety device, so that the operation is performed by pressing the operation button, and the operability is improved. In addition, by combining the parts, the number of parts is reduced, and since the operation button and button guide become a unit when the opening is put on, it cannot be easily released, so it can be assembled by simply inserting the knit from the front of the device. , and has a good lead.

Effects of the Invention As described above, in the gas cooker according to the first aspect of the present invention, the following effects can be obtained. In other words, no matter what position the firepower adjustment lever is in, if you press the button to ignite, the firepower will always be in the pull position, so the ignition performance is excellent. In addition, when cooking while reciting, the heat is often set to high immediately after ignition, and the heat is set to low just before extinguishing, making it easy to use.

In addition, in the gas cooking appliance according to claim 2 of the present invention, the ignition operation can be performed by pressing the operation button once, and even if the operation button is released thereafter, an appropriate current is supplied to the igniter and the safety valve for an appropriate time, respectively, and the ignition is continued. It is very easy to operate.

Further, in the safety device according to claim 3 of the present invention, since the operation button and the safety device lever are used as both, the safety device has excellent operability. It also has a small number of parts and is easy to assemble.

[Brief explanation of the drawing]

FIG. 1 is an exploded perspective view of the main parts of a gas cooking appliance according to an embodiment of the present invention, and FIG. 2 is a perspective view showing the configuration of the operation button, button guide, and gas appliance plug unit in the extinguished state.
FIG. 3 is a cross-sectional view of the gas appliance tap unit in the extinguished state, and FIG. 4 is a perspective view showing the configuration of the operation button, button guide, and gas appliance tap unit with the operation button pressed in for ignition. Figure 5 is a cross-sectional view of the gas appliance plug unit with the operation button pressed in for ignition;
The figure is a perspective view showing the configuration of the operation button, button guide, and gas appliance plug unit in the same combustion state.
Figure fbl is a partial sectional view of the gas appliance plug unit with high firepower in the same combustion state, and Figure 8 shows the elapsed time after the ignition switch was turned on in the same example, and the supply from the P plate to the igniter and safety valve. FIG. 9 is a perspective view of the operation button and button guide in the same embodiment; FIG. 10 is a perspective view of the operation button incorporated in the button guide in the same embodiment; FIG. 11 12 is a perspective view of the button guide in the same embodiment when the operation button is incorporated in the ignition and extinguishing states; FIG. Fig. 13 is a rear perspective view of the operating button and button guide in the same embodiment, Fig. 14 is an exploded perspective view of a part of the operating button, leaf spring, and coil spring in the same embodiment, and Fig. 15 is an exploded perspective view of the operating button and the button guide in the same embodiment. Fig. 16 is a perspective view of a button guide in which a leaf spring and a coil spring are incorporated in an operating button in the same embodiment; Fig. 17 is a perspective view from the rear of a button guide in which an operating button is incorporated in the button guide in the same embodiment; Figure 18 is a perspective view from the rear with the operation button incorporated into the button guide and the safety device activated. FIG. 19 is a cross-sectional view of the main part of a conventional gas cooking appliance in a state where the appliance is inserted into the hole from the front. 1...Operation unit, 2...Operation button, 2
b...Protrusion, 3...Gas appliance plug, 3c
...Safety valve, 4...Gas pipe, 5...
...Firepower adjustment lever 6...Locking device, 7.
...Ignition switch, 8...Burner 9
... Burner cap, 10 ... Heat element, 11 ... Spark plug, 12 ... Igniter, 13a ... Lock 1/bar 14...
...Nozzle, 15...P plate, 16...
・Battery case, 17...Dry battery, 18a...
...Return lever 19...Button guide. Name of agent: Patent attorney Shigetaka Awano

Claims (3)

[Claims] (1) One operation button for ignition and extinguishing, one sliding fire power adjustment lever, a gas appliance valve with a gas shutoff function, and a gas passage of the gas appliance valve by igniting and extinguishing the operation button. a locking device that opens and closes; a firepower adjustment section that regulates the amount of gas passing through by sliding the firepower adjustment lever; and a movable locking device that moves in conjunction with the movement of the ignition operation around one fulcrum. A gas cooking appliance having a return lever that always moves the fire power adjustment lever to a high heat position, with one end in contact with the part as the point of force and the opposite end as the point of action. (2) A switch that determines the open/close state of a locking device that opens and closes the gas passage of a gas appliance valve, an igniter that generates an electric spark discharge at the ignition part of the burner, and a thermoelectromotive force that is generated at both ends by the flame of the burner. After the heat element generated and the safety valve unit that holds the gas passage open by the electromotive force generated by the heat element and the switch are electrically connected, a constant current is applied to the safety valve unit and the igniter for an optimal predetermined time, respectively. The gas cooking appliance according to claim 1, further comprising a circuit for supplying. (3) A ring-shaped button guide fixed to the operating section on the front of the gas appliance, one cylindrical operating button that slides back and forth along the inner surface of the button guide to ignite and extinguish the fire, and the outer periphery of the operating button. A part of the wall is provided with a convex leaf spring that protrudes from the outer peripheral surface of the operation button, and the inner surface of the button guide is provided with two first grooves in the sliding direction of the operation button in which the leaf spring slides. direction and circumferential L
A safety device for a gas appliance tap, wherein the operation button is provided with a shaped groove and a protrusion that fits into the L-shaped second groove on the side surface of the operation button.