JPH0443718Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention mainly relates to a gas cooker used in a gas stove.

(Prior Art) Conventionally, a closing member is provided in a body having a gas inlet and a gas outlet, and which is rotated between a stop position for cutting off communication between the gas inlet and the gas outlet and an open position for communicating them. , the operating shaft is provided so as to be movable between a forward position in which it is moved in the axial direction against a spring and a retracted position in which it is returned to by being resiliently repelled by the spring, and the operating shaft is maintained in the forward position while the closing member is in an open position. When the switch is rotated to the point where the ignition plug faces the gas burner connected to the gas outlet, the switch is closed, and when the operating shaft is bounced by the spring and returns to the retracted position, the switch is opened and the ignition plug is turned on. known.

(Problem to be solved by the invention) However, if an ignition error occurs, it is necessary to operate the ignition plug again as soon as possible.

The object of the invention is to provide a gas tank with extremely simple means for reactivating such a spark plug.

(Means for solving the problems) In order to achieve the above object, the present invention provides a valve which is provided in a valve body having a gas inlet and a gas outlet and which can be rotated between a stop position which blocks communication between the gas inlet and the gas outlet and an open position which allows communication between them, and also provides an operating shaft which can be moved axially against a spring to a forward position and back to a retracted position which is repelled by the spring, and when the operating shaft is rotated to the open position of the valve while maintaining the forward position, a microswitch which operates an ignition plug facing a gas burner connected to the gas outlet is closed, and when the operating shaft is repelled by the spring to return to the retracted position, the microswitch is opened to deactivate the ignition plug. In this device, a rotating cam is provided on the operating shaft, and
Between the microswitch and the rotating cam, there are provided a swing lever and a leaf spring which cooperates with the swing lever to act on the actuator of the microswitch, an end of the leaf spring is engaged with the cock body side to resiliently urge the swing lever towards the rotating cam, and the swing lever is provided with an abutment surface which abuts against the cam surface of the rotating cam when the operating shaft is rotated while maintained in the forward position, and a cam surface which is acted upon by an end edge of the rotating cam when the operating shaft is moved from the backward position to the forward position with the operating shaft rotated to the open position is provided continuously from the abutment surface in the backward direction of the operating shaft, so that the swing lever is swung towards the microswitch during both operations.

(Function) In the gas tank with the above configuration, when the operating shaft is rotated from the stop position to the open position while keeping the operating shaft in the forward position, the closure switches to a state where the gas inlet and the gas outlet are communicated with each other. Ru.

Therefore, as gas is supplied to the gas burner, the cam surface of the rotating cam acts on the abutment surface of the swing lever, swinging it toward the micro switch, and the leaf spring that moves together with the swing lever acts on the contact surface of the swing lever. Press to close this. For this reason, a firework is placed on the ignition plug to ignite the gas discharged from the flame port of the gas burner.

When the pushing operation of the operating shaft is released, that is, when the operating shaft is moved to the retracted position, the swinging lever of the swinging lever toward the microswitch by the rotating cam is released, and the ignition plug becomes inoperable.

If this ignition operation does not ignite the gas discharged from the gas burner, push the operation shaft again from the open position, that is, move it to the forward position. Press to swing the swing lever toward the microswitch, and push the actuator of the microswitch via the leaf spring to close it. Therefore, it is possible to get fireworks to the ignition plug again and ignite the gas from the flame port of the gas burner.

(Example) An example of implementing the present invention will be explained with reference to the attached drawings.

In the drawing, 1 indicates a gas inlet 2 and a gas outlet 3, and 4 indicates a stop position A that blocks communication between the gas inlet 2 and the gas outlet 3 provided in the gas inlet 1, and an open position B that communicates them. The closure is rotated by the
Reference numeral 5 designates the operating shaft, and the operating shaft 5 is movable between a forward position in which the control body 1 is moved in the axial direction against a spring 6, and a retreated position in which it is returned to its original position by being resiliently repelled by the spring 6. When the operating shaft 5 is kept in the forward position and rotated to the open position of the closing member 4, the micro switch 9 is closed, which operates the ignition plug 8 facing the gas burner 7 connected to the gas outlet 3. When the shaft 5 is repelled by the spring 6 and returns to the retracted position, the switch 9 is opened and the ignition plug 8 is rendered inoperative.

Such a gas tank is not particularly different from conventionally known ones, and the closure 4 is made of a tapered plug, and the front end of the closure 4 has a cross pin 5 provided on the operating shaft 5.
The closing member 4 has a long groove 4a in the front-rear direction that is engaged with the cross pin 5a, and the closing member 4 rotates together with the operating shaft 5 by the engagement between the cross pin 5a and the long groove 4a.

In the present invention, a rotary cam 10 is provided on the operating shaft 5, the switch 9 is provided near the rotary cam 10, and the switch 9 is provided between the micro switch 9 and the rotary cam 10. In conjunction with the rotation operation of the cam 10 when rotating the operating shaft 5 while maintaining the forward position, and the moving operation of moving the operating shaft 5 from the retreat position to the forward position with the operating shaft 5 rotated to the open position. A swinging lever 11 that swings, and the swinging lever 11
A leaf spring 12 is provided which acts on the actuator 9a of the micro switch 9 which moves together with the micro switch 9, and the end of the leaf spring 12 is locked to the control body 1 side to move the swinging lever 11 to the rotating cam 10 side. The bullet was repelled.

The operating shaft 5 is attached to the tip of the swing lever 11.
a contact surface 11b that comes into contact with the cam surface 10a of the rotary cam 10 when the rotary cam 10 is rotated while maintaining the forward position;
and a cam surface 1 on which the edge of the rotary cam 10 acts during a movement operation to move from the retreat position to the forward position with the operation shaft 5 rotated to the open position.
1a is provided continuously from the abutment surface 11b in the backward direction of the operating shaft 5, and when the operating shaft 5 is rotated to the open position, and when the operating shaft 5 is rotated to the open position, it is in the retracted position. The swing lever 11 is swung toward the micro switch 9 during a movement operation to move from the forward position to the forward position.

To further explain this, the micro switch 9 is connected to the operating shaft 5 of the control body 1.
The swing lever 1 is mounted on a mounting board 13 provided on the surface facing the swing lever 1, and is supported by a shaft 14 on the mounting board 13.
1 and a leaf spring 12, and the end of the leaf spring 12 is locked to the end of a cover frame 22 provided on the mounting board 13 so as to cover the rotating cam 10 provided on the operating shaft 5. The swinging lever 11 is made to elastically bounce toward the rotating cam 10, and the cam surface 11a provided at the tip of the swinging lever 11 is inclined in a direction away from the rotating cam 10 as the operating shaft 5 moves backward. When the rotary cam 10 is rotated when the operating shaft 5 is rotated while maintaining the forward position, the cam surface 10a acts on the abutment surface 11b of the sliding lever. When the micro switch 9 is swung toward the micro switch 9 side to close the micro switch 9, and the operation shaft 5 is kept in the open position and moved from the retreat position to the forward position, the rotary cam 10 moves toward the cam surface 1.
1a was pressed to swing the swinging lever 11 toward the microswitch 9, thereby closing the microswitch 9.

The swing angle of the swing lever 11 is set so that the leaf spring 12 swings further even after the switch 9 is turned on, and the leaf spring 12 is bent to absorb variations in each component.

In addition, 15 is a stopper which restricts the swinging position of the swinging lever 11 provided by protruding a part of the mounting board 13 toward the rotating cam 11 side, and 16 is a stopper between the closing member 4 and the gas inlet 2. Electromagnetic safety valve interposed between 17
indicates a rod that extends the operating shaft 5 toward the forward position, passes through the closure 4, and has its rear end exposed to the front surface of the electromagnetic safety valve 16. When the valve is pressed against the pressure, the valve is opened by being pushed by the rod 17, and is held open by the thermoelectromotive force of a thermocouple (not shown) facing the gas burner 7.

Reference numeral 18 indicates a battery power source interposed in the operating circuit of the spark plug 8, and reference numeral 19 indicates a lock plate provided on the operating shaft 5 to prevent the operating shaft 5 from rotating violently at the stop position. A resilient spring 21 is mounted on the operating shaft 5, rotates together with the operating shaft 5, and held between a locking portion 20 on the operating shaft 5 and an elastic spring 21 interposed between the rotary cam 10 and the lock plate 19. 21 so that it can be moved a little. Reference numeral 23 indicates a recess provided in the lock plate 19, and reference numeral 24 indicates a claw provided in the cover frame 22 which fits into the recess 23 when the operating shaft is rotated to the stop position of the closure 4.

Next, the operation of this device will be explained.

Now, when the operating shaft 5 is pushed against the spring 6, the recess 23 provided in the lock plate 19 and the pawl 24 are disengaged, allowing rotation. When the operating shaft is rotated from the stop position A to the open position B shown in FIG. 7 while maintaining the pressed state, that is, the forward position, the electromagnetic safety valve 16 is pushed open and the closure 4 is moved between the gas inlet 2 and the gas outlet 3. Switch to a state where it communicates with

Therefore, gas is supplied to the gas burner 7, and the cam surface 10a of the rotary cam 10 acts on the contact surface 11b of the swinging lever 11 to swing it toward the micro switch 9, and the leaf spring that moves together with it acts on the contact surface 11b of the swinging lever 11. At step 12, the actuator 9a of the micro switch 9 is pressed to close it. For this reason, fireworks are generated in the ignition plug 8, and the gas discharged from the flame port of the gas burner 7 is ignited.

When releasing the pushing operation of the operating shaft 5, that is, moving the operating shaft 5 to the retreat position, the rotating cam 10
The swinging of the swinging lever 11 toward the micro switch 9 is released, and the spark plug 8 becomes inoperable.

However, if the gas discharged from the gas burner 7 is not ignited even with this ignition operation, the operating shaft 5
When it is pushed again from the open position, that is, moved to the forward position, the end face of the rotary cam 10 acts on the cam surface 11a of the swinging lever 11, pushing the swinging lever 11 toward the micro switch 9 again and pushing the leaf spring 12. The actuator 9a of the microswitch 9 is pushed through the microswitch 9 to close it as shown by the dotted line in FIG. For this reason, the spark plug 8
It is possible to obtain fireworks and ignite the gas from the flame port of the gas burner 7.

In the above-mentioned embodiment, the explanation is given of a device in which the gas discharged from the flame port of the gas burner 7 is ignited by a so-called push-and-turn operation in which the operating shaft 5 is once pushed to the forward position and then rotated, but the present invention is limited to such a device. However, even if the operating shaft 5 is already in the forward position at the stop position A, the operating shaft 5 is rotated to the open position B only by rotational operation, and then moved to the backward position. The ignition operation as described above can be performed.

Furthermore, the above-mentioned cam surface 10 of the rotary cam 10
The switch 9 was provided so as to face the switch a,
By adjusting the direction of extension of the leaf spring 12, the installation position of the switch 9 can be changed to suit the installation conditions, such as above the rotary cam 10 as shown in FIG. Although the illustration shows a gas burner 7 that is directly ignited by a spark plug 8, it may also be ignited via a pilot burner (not shown), in which case the gas to the pilot burner is The control is such that gas is supplied to the gas burner only when the operating shaft 5 is moved from the open position to the forward position using the closing member 4 and a pilot valve (not shown) provided on the rod 17. Make it.

(Effect of the invention) As described above, according to the invention, in a device that ignites a gas burner and obtains a combustion flame by rotating the operating shaft to the open position of the shutter while maintaining the forward position, the rotating operation Even in the event that the gas burner does not ignite, the ignition plug can be activated and the gas burner ignited by simply moving the operating shaft from the open position to the forward position again, improving operability. Moreover, a rotary cam is provided on the operating shaft, and a swing lever is provided between the micro switch and the rotary cam, and a leaf spring that operates together with the swing lever and acts on the actuator of the micro switch. and the end of the plate spring is locked to the cock body side to spring the swinging lever toward the rotating cam side, and the swinging lever is rotated while maintaining the operating shaft in the forward position. The cam is provided with a contact surface that comes into contact with the cam surface of the rotary cam, and on which the edge of the rotary cam acts during a movement operation in which the operating shaft is rotated to the open position and moved from the retreat position to the forward position. A surface is provided continuously from the abutment surface in the backward direction of the operating shaft, and the swinging lever swings toward the microswitch during both operations, so that the microswitch simply has an actuator. It is possible to use extremely simple parts, which makes it possible to obtain the entire device at a low cost.Moreover, variations in component dimensions can be absorbed by the leaf spring, and the end of the leaf spring can be locked on the side of the body. Since the swinging lever is made to bounce toward the rotating cam side, there is no need to separately provide a spring to bounce the swinging lever, and the number of parts can be reduced to make assembly work easier. There is.

[Brief explanation of the drawing]

Fig. 1 is a plan view of an example of the implementation of the present invention, Fig. 2 is a cross-sectional view taken along the - line, Fig. 3 is a perspective view of the main parts thereof, and Figs. 4 to 6 are explanatory diagrams explaining the operation. ,
FIG. 7 is a diagram illustrating the operation of the operating shaft, and FIG. 8 is a diagram corresponding to FIG. 6 of a modified example. 1...Kock body, 2...Gas inlet, 3...Gas outlet, 4...Closer, 5...Operation shaft, 6...Spring,
7... Gas burner, 8... Ignition plug, 9... Micro switch, 10... Rotating cam, 11... Rocking lever, 12... Leaf spring.

Claims (1)

[Scope of utility model registration request] Inside the body, which is equipped with a gas inlet and a gas outlet,
A rotary closure is provided at a stop position that blocks communication between the gas inlet and the gas outlet and an open position that communicates them, and the operating shaft is moved in the axial direction against a spring in an advanced position. The ignition plug is provided so as to be movable between the ignition plug and the retracted position where it returns to its original position after being resiliently repelled by a spring, and when the operating shaft is rotated to the open position of the shutter while maintaining the forward position, the ignition plug faces the gas burner connected to the gas outlet. In a device in which a micro switch to be activated is closed, and then the operating shaft is bounced by a spring and returned to the retracted position, the micro switch is opened to disable the ignition plug, and a rotary cam is provided on the operating shaft. , a swinging lever and a plate spring that cooperates with the swinging lever to act on the actuator of the microswitch are provided between the microswitch and the rotating cam, and the end of the plate spring is tightened. The swinging lever is locked to the body side and springs toward the rotating cam side, and the swinging lever has an abutment that comes into contact with the cam surface of the rotating cam when the operating shaft is rotated while maintaining the forward position. In addition to providing a contact surface, the cam surface on which the edge of the rotary cam acts during a movement operation of moving the operating shaft from the retreat position to the forward position with the operating shaft rotated to the open position is moved from the contact surface to the operating shaft. A gas lever provided continuously in the backward direction so that the swing lever swings toward the micro switch during both operations.