JPH0729398Y2 - Gas valve button operation device - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention burns and extinguishes by pushing and pushing the operation button in a retracted manner, and the operation button is rotated to operate from high heat to low heat. The present invention relates to a gas valve for automatic ignition, in which the heat power can be adjusted within the range, particularly to a button operating device of a gas valve operated by pushing and turning.

[Prior Art] A gas valve in which a valve is opened by pressing a push button to ignite and a gas flow rate is adjusted by a rotating operation has been already proposed by the present applicant. Is provided with a plurality of buttons so as to alternately operate in a seesaw type, and generally has a configuration in which the flow rate control lever is a separate body and the ignition flow rate is secured by interlocking the lever only during ignition. However, this configuration has a drawback that the button operation is very heavy. There is also known a type in which the lever is not interlocked, but this type is provided with a bypass valve separately to open the bypass valve only at the time of ignition so that a required flow rate can be secured at the time of ignition. However, this method requires a bypass valve and its associated mechanism inside the main body, which complicates the valve itself and causes a problem in that the operation is not accurate.

[Problems to be Solved by the Invention] The present invention has been made in view of the above problems of the conventional technology, and the purpose thereof is to ensure the flow securing capacity at the time of ignition and to cause mis-ignition. It is an object of the present invention to provide a button operating device for a gas valve for automatic ignition, which is simple in construction, light in operation, reliable, inexpensive, excellent in quality and performance.

[Means for Solving the Problems] In order to achieve the above object, a button operating device for a gas valve according to the present invention includes a valve case body 3 having a gas inlet 1 and a gas outlet 2 between an ignition position and a fire extinguishing position. Operation button 10 that is operated in both the pushing direction and the rotating direction so that if you push the button in and out and press it again at the sunk position (fire extinguishing position), it will return to the projecting position (ignition position) and the solenoid valve 6 that opens and closes the gas.
And the switch 7 for the igniter and the gas outflow rate are large. During. A gas valve provided with a needle valve 8 for limiting to a small range, which holds an immersion position (extinguishing position) so as to extinguish a fire when the operation button 10 is pushed in,
A lock mechanism 11 that is released by pressing again and a flow rate adjusting mechanism that adjusts the gas passage hole 4 in a large, medium, and small range by interlocking the needle valve 8 so as to move forward and backward while rotating by operating the operation button 10. 12 and the operation button 10 when pushing it back from the retracted position to the protruding position by pushing it again
The operation button 10 is moved from the small (low flame) or medium (medium fire) position to the medium or large (large fire) position by engaging the inclined cam surface 22 formed on the peripheral side portion of 10 with the stopper pin 20 for angle control. Safety mechanism that automatically rotates and pushes back to
It is equipped with 13 and.

The switch 7 for the igniter is switched off at the push-in position of the operation button 10 to extinguish the fire, and switched on when the push-in is returned to turn on the igniter and the solenoid valve 6 at the same time to make a combustion state. It is preferable to configure.

[Operation] The operation button 10 is pushed in and out of the button holder 9 so as to project and retract, and protrudes by being pressed again.

The state where the operation button 10 is pushed in so as to be held in the retracted position is the fire extinguishing state, and the protruding state is the combustion state.

When the operation button 10 is pushed further from the fire extinguishing state held in the retracted position, the lock mechanism 11 operates and the lock of the button 10 is released, so that the operation button 10 is returned to the original protruding position by the bias of the spring 14. It is extruded into a protruding state (Fig. 1).

Therefore, the ignition switch 7, which has been pressed until now, is released and becomes conductive, and the igniter operates. At the same time, the solenoid valve 6 opens against the bias of the valve 6b by the action of the suction force.

Therefore, the gas flows from the inlet 1 through the valve port 5 and the needle valve 8 to the gas outlet 2, and the gas is in a combustion state.

Next, when the button 10 is rotated, the needle pin 8a is locked in the vertical groove 10a of the button inner cavity and rotates together, so that the needle valve 8 rotates, and this rotation guides the needle pin to the cam groove hole 8b. Then, the gas passage 4 is moved linearly in the axial direction to change the gas passage 4 to a wide range, and the gas flow rate is adjusted between large, medium and small.

When the operation button 10 is pushed into the push-in position again, the lock mechanism 11 locks the button 10 in the push-in position and keeps it in the retracted state, whereby the switch 7 is turned off and the solenoid valve 6 is closed. The outflow is stopped and the original extinguishing state is restored.

Thus, the operation of returning the operation button 10 to the combustion position from the immersive state of the fire extinguishing position is linearly projected by the spring 14 biased inside the button, but the operation button 10 is in the small (low heat) position or this. When the position is within the middle (medium heat) position, the stopper pin 20 of the safety mechanism 13 projects in a state of being engaged with the circumferentially inclined cam 22 formed on the outer peripheral surface of the button. By the action of, the rotational force is applied and it is automatically returned to the middle position. Therefore, at the same time when the protrusion is completed, the gas flow rate of medium fire is secured in the through hole 4 of the needle valve 8 and the igniter is ignited in this state, so that the gas is ignited safely and reliably.

[Embodiment] A preferred embodiment of the present invention will be described with reference to the drawings.

The operation button 10 is formed in a hollow cylindrical shape with an open inner end, and is inserted into the circular guide hole 9a of the button holder 9 so that it can be rotated and pushed in a dial type, and the head is immersed in the hole. It is configured so that it can appear and disappear in a state protruding from the state.

The solenoid valve 6 is provided so as to face the valve opening 5 from the end opening of the valve case body 3 so as to be detachable from and contactable with the valve opening 5. When a current is passed through the coil 6c, the yoke 6d is excited and the plunger is attracted by the magnetic force. 6e is actuated, whereby the valve plate attached to the end of the plunger responds to open and close the valve port 5.

The button holder 9 is integrally connected to the valve case body 3 with screws or the like.

The lock mechanism 11 is composed of a lock cam plate 15, a cam lever 16 formed of a U-shaped wire, and a presser spring 17, and is incorporated in the button holder 9. The locking cam plate 15 is fitted between the operation button 10 and the button holder 9, and is attached so as to be integral with the operation button 10 in the axial direction but loose in the rotational direction. Further, with respect to the button holder 9, it is fitted in a vertically elongated groove 9b formed in the inner cavity of the button and slidably slides only in the axial direction.

When the button 10 is pushed in, the cam plate 15 also slides together with it. At this time, the tip locking portion 16a of the cam lever 16 engages with the top portion a of the heart-shaped cam groove 15a and the button 10 by the spring 14 is engaged.
The immersive position is maintained to prevent the return of the. When the button is pushed again, the lever 11b is disengaged from the top portion a and returns to the straight portion b of the heart-shaped cam groove 15a, so that the operation button 10 is returned to the original projecting position by the urging force of the spring 14.

The flow rate adjusting mechanism 12 has the following configuration.

The needle valve 8 is fitted in the cylindrical portion 3a of the valve case main body 3 so as to freely rotate and slide in the axial direction, and biases the spring pressure by the needle spring 18.

The needle pin 8a protrudes leftward and rightward through a cam groove hole 8b formed in the cylindrical portion 3a, and the protruding portion is formed by the vertical groove 10 of the operation button 10.
It is integrated with a in the rotational direction and is fitted so as to be smooth in the axial direction.

The safety mechanism 13 has the following configuration.

The stopper pin 20 is slidably provided so as to penetrate through the button holder 9 and project inward and outward, and the head portion thereof is provided with a leaf spring 21.
Has been suppressed by.

The inner end portion of the stopper pin 20 abuts on a locking groove 23 formed on the outer peripheral portion of the operation button 10, and the left and right ends 23a and 23b of the stopper button 20 regulate the angle of the operation button 10 within a range of 0 to 90 degrees or 180 degrees. In addition, the inclined cam surface 22 is formed on one end side, and the engagement of the inclined cam surface 22 and the stopper pin 20 causes the automatic operation to automatically return to a position of at least medium fire or higher during ignition operation. It is a thing.

[Advantages of the Invention] Since the present invention is configured as described above, it has the following effects.

Even when the position of the operation button in the fire extinguishing state is in the low-fire flow rate range, the operation button is automatically placed in the safe flow range above the middle-fire flow rate position by the engagement of the cam and the stopper pin with the push-in return operation during ignition operation. The gas can be ignited safely and reliably because it can be returned.

Such a safety mechanism is attached to a round operation button for rotation and push operation, and is simple and inexpensive to obtain.

The structure inside the gas valve body is simplified, and the operation can be eliminated to improve reliability.

The fire extinguishing operation of the operation button can extinguish the fire at any of the large, medium and small positions, and it is possible to easily confirm the fire extinguishing or the combustion depending on the button retracted state.

[Brief description of drawings]

FIG. 1 is a front view of a gas valve equipped with the device of the present invention, and FIG.
The figure is a vertical sectional side view of the valve, showing a combustion state. Third
2 is a cross-sectional view taken along the line AA in FIG. 2, FIG. 4 is a plan view showing a part of the operation button locking mechanism in cross section, FIG. 5 is a plan view of a needle pin mounting portion, and FIG. 6 is an operation button. 7 is a perspective view showing the operation of the needle valve, and FIG. 7 is a perspective view showing the operation of the needle valve.
The figure is a perspective view of the cam plate and the cam lever. 1 ... Gas inlet, 2 ... Gas outlet 3 ... Valve case body, 4 ... Gas through hole 5 ... Valve opening, 6 ... Solenoid valve 7 ... Switch, 8 ... Needle valve 9 ... Button holder , 10 ...... Operation button 11 ...... Lock mechanism, 12 ...... Flow rate adjustment mechanism 13 ...... Safety mechanism, 14 ...... Spring 15 ...... Cam plate, 16 ...... Cam lever 17 ...... Presser spring, 20 ...... Stopper pin 21 ...... Leaf spring, 22 …… Inclined cam surface

Claims (2)

[Scope of utility model registration request] 1. A valve case body 3 having a gas inlet 1 and a gas outlet 2 appears and disappears between an ignition position and a fire extinguishing position and is pushed again at the immersion position (fire extinguishing position) to return to a protruding position (ignition position). One operation button 10 operated both in the pushing direction and the rotating direction, the solenoid valve 6 for opening and closing the gas, the switch 7 for the igniter, and the gas outflow amount are large. During. A gas valve equipped with a needle valve 8 for limiting the range to a small range, and: a) Hold the immersion position (fire extinguishing position) and press the operation button 10 again when the operation button 10 is pressed in so that the button will be in the immersion state A lock mechanism 11 for releasing the push-in operation by b), and b) a flow rate adjusting mechanism that adjusts the gas through hole 4 in a large, medium, and small range by interlockingly operating the operation button 10 so that the needle valve 8 moves forward and backward while rotating. 12 and c) When the operation button 10 is pushed back from the retracted position to the projecting position by pushing it back, the slanted cam surface 22 formed on the peripheral side of the operation button 10 and the stopper pin 20 for angle regulation are engaged. A safety mechanism 13 for automatically rotating and pushing back the operation button 10 from the small (low heat) or medium (medium heat) position toward the medium or large (large heat) position. Button operation position of the characteristic gas valve. 2. A switch 7 for the igniter is an operation button.
The circuit is configured so that the switch is turned off at the push-in position to extinguish the fire, and the switch is turned on at the push-in return to turn on the igniter and the solenoid valve 6 at the same time to be in a combustion state. Button operation device for gas valves.