JPS636604Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a gas tank for automatic ignition, and in detail, it includes a closure that is rotatably assembled in the inner hole of the gas tank body to open and close the main gas passage, and a shaft inside the closure. an auxiliary valve assembled so as to be pushable in a direction to open and close a pilot gas passage; an operating shaft that rotates the closure via an operating mechanism and pushes the auxiliary valve; and rotation of the operating shaft. This invention relates to an automatic ignition gas tank equipped with an ignition device that operates in conjunction with motion.

This type of automatic ignition gas tank can open the pilot gas passage and the main gas passage and automatically ignite the gas by simply turning the operating shaft, and there are various types that can be easily operated with a so-called one-touch operation. is proposed. however,
In conventional gas stoves of this type, the operating mechanism is made up of a large number of components, and the assembly of these components is complicated, making it difficult to manufacture and expensive. In addition, in order to reduce the number of components of the operating mechanism described above, we have developed a fixed cam with an inclined cam part, a flat part, and a notch between both parts, and a fixed cam that rotates integrally with the operating shaft to tilt the fixed cam. A cam follower pin that slides on the lower surface of the cam and the upper surface of the flat part is adopted, and the cam follower pin is pushed down by the inclined cam part, and the pushing down action of this cam follower pin opens the auxiliary valve and opens the pilot gas passage. It has been proposed that
No. 16250). However, in this one,
After the cam follower pin slides on the inclined cam part, it reaches the notch and is held in the notch to keep the auxiliary valve pressed down, which prevents the cam follower pin from being held unstable in the notch. However, the auxiliary valve returned to the upward position involuntarily, and the opening of the pilot gas passage was not always stable, making it difficult for the user to use the system.

The present invention was developed in light of the above-mentioned circumstances, and its main purpose is to accurately perform not only the rotation of the closure but also the pushing of the auxiliary valve with only the rotation of the operating shaft. To provide a gas tank for automatic ignition that is easy to use and easy to use, and to provide such a useful gas tank for automatic ignition that is easy to manufacture and inexpensive.

Hereinafter, the present invention will be explained based on the drawings. FIGS. 1 and 2 show an example of a gas tank according to the present invention. The gas kettle body 10 includes a tapered inner hole 11 and a cylindrical inner hole 12, and a tapered inner hole 11 of the kettle body 10.
A closure 20 rotatably assembled inside the closure 2
0, an auxiliary valve 30 that is assembled so as to be able to be pushed in the axial direction through a substantially central portion of the 0, an operating shaft 50 that operates the closure 20 and the auxiliary valve 30 via an operating mechanism 40, and an operating shaft 50 that The ignition device 60 operates in conjunction with the rotational movement.

The closure 20 opens by rotating approximately 90 degrees to communicate the gas inflow passage 13 and the main gas passage 14 through the inner hole 21, and the auxiliary valve 30 has its valve stem 31 between the closure 20 and the auxiliary valve 30. The closure 20 opens when pushed against the coil spring 32 installed in the closure 20.
The inner hole 21 and the pilot gas passage 15 are communicated with each other, and when the inflow passage 13 and the main gas passage 14 are communicated, the inflow passage 13 and the pilot gas passage 15 are communicated with each other.
communicate.

As shown in FIG. 3, the operating mechanism 40 is composed of a rotating cylinder 41, a pushing shaft 42, and related parts thereof. The rotating cylinder 41 is the third
As shown in FIGS. 5 to 5, the cylindrical body 41a is provided with a pair of supporting portions 41b projecting outward from the upper outer periphery of the cylindrical body 41a, and a pair of engagement protrusions 41c projecting upward from the upper end surface. Each of these engaging protrusions 41c
is the mounting plate 1 attached to the upper end of the Kotuku main body 10.
It is formed so that it can be engaged with and detached from each engagement hole 16a provided in 6. The cylindrical main body 41a also has a pair of slit-like grooves 41d extending in the axial direction at its lower end.
It also has a pair of stepped grooves 41e extending in the axial direction on its inner periphery. These slit-like grooves 4
1d is formed in a shape into which each engagement protrusion 22 protrudingly provided on the upper end surface of the closure 20 is fitted so as to be movable up and down. Further, each stepped groove 41e is formed by a push shaft 42, which will be described later.
The end of the pin 42b is fitted into the stepped groove 41e so as to be able to move up and down, and the end of the pin 42b is locked in each stepped groove 41e to restrict the upward movement of the pin 42b. is formed. The rotating cylinder 41 is inserted into the cylindrical inner hole 12 of the lock body 10 through a large-diameter coil spring 43 and a retainer 45 between its support portion 41b and the upper surface of the closure 20 in a direction away from the closure 20. It is assembled in a biased state and is located on the outer periphery of the lower end of the operating shaft 50, and each engaging protrusion 41c of the rotating cylinder 41 fits into and engages each engaging hole 16a of the mounting plate 16, and the rotating Cylinder 41
Each of the slit-like grooves 41d fits each upright engagement protrusion 22 of the closure 20.

On the other hand, the push shaft 42 includes a cylindrical shaft 42a and a pin 42b that passes through the cylindrical shaft 42a and has both ends protruding outward. This push shaft 42
is incorporated into an inner hole 51 provided at the lower end of the operating shaft 50, and the lower end of the cylindrical shaft 42a is connected to the auxiliary valve by the elastic force of a small-diameter coil spring 44 inserted in the inner hole 51. 30 is in contact with the upper surface of the valve shaft 31. In this state, the pin 42b passes through each slit-shaped groove 52 provided at the lower end of the operating shaft 50, and both ends of the pin 42b are connected to each stepped groove 41e of the rotating cylinder 41.
When the closing member 20 is in the closed position, each stepped groove 4
It is located at the lower part of the inclined step portion 41f of 1e.

The ignition device 60 is a conventionally known piezoelectric ignition device, and includes a cam plate 6 that moves in conjunction with the rotational movement of the operating shaft 50.
1, the piezoelectric hammer 62 is actuated. In addition, the cam plate 61 and the mounting plate 16
In between is a torque spring 63 for returning the operating shaft 50.
is interposed.

In the gas tank configured in this way,
When the operation shaft 50 is rotated, the push shaft 42 rotates integrally with the operation shaft 50. At this time, the push shaft 42
In this case, the pin 42b is connected to the rotating cylinder 41 as shown in FIG.
It is locked by the inclined stepped portion 41f of the stepped groove 41e and rotates in the direction of the arrow shown in the figure while its upward movement is restricted, thereby transmitting rotational force to the rotating cylinder 41. For this reason, each engagement protrusion 41c of the rotating cylinder 41 and the mounting plate 16
The engagement with each engagement hole 16a is released, and the rotation cylinder 4
1 is pressed down against the coil spring 43 by the height of each engagement projection 41c, and rotates while bringing the top of each engagement projection 41c into sliding contact with the lower surface of the mounting plate 16. Therefore, the pushing shaft 42 is pushed down by the stepped portion 41f of the stepped groove 41e of the rotary cylinder 41, and the valve shaft 31 of the auxiliary valve 30 is pushed downward against the coil spring 32, thereby causing the auxiliary valve to open. 30 is opened, and the rotating cylinder 41 also rotates the closure 20 to open it. As a result, the gas inlet passage 13 communicates with the main gas passage 14 and the pilot gas passage 15, and at the same time, the ignition device 60 is operated to ignite the pilot burner, and subsequently the main burner. After igniting the pilot burner and the main burner, when you release your hand from the operating shaft 50 to eliminate the rotational force on the push shaft 42, the operating shaft 50 is rotated slightly in the opposite direction by the torque spring 63, and the coil spring 3
2, the pin 42b of the push shaft 42 is disengaged from the inclined stepped portion 41f of the stepped groove 42e of the rotary cylinder 41,
The pin 42b of the push shaft 42 is pushed up by the elastic force of the coil spring 32 of the auxiliary valve 30 to the position shown by the solid line in FIG. 5, and at the same time the valve shaft 31 is pushed up. As a result, the auxiliary valve 30 closes, only the communication between the gas inflow passage 13 and the pilot gas passage 15 is cut off, and only the pilot burner is extinguished.

On the other hand, when the operating shaft 50 is rotated in the reverse direction in this state, the pushing shaft 42 is moved to the operating shaft 50 via the pin 42b.
It rotates in the opposite direction in the direction of the arrow in FIG. For this reason, the rotating cylinder 41
rotates in the direction of the arrow shown in the figure to reversely rotate the closure 20, and each engagement protrusion 41c of the rotating cylinder 41 engages each engagement hole 16a of the mounting plate 16 by the elastic force of the coil spring 43. It is pushed up and engaged. As a result, the closure 20 closes and communication between the gas inflow passage 13 and the main gas passage 14 is cut off, the main burner is extinguished, and the rotating cylinder 41 is pushed up by the elastic force of the coil spring 43. , the pin 42b of the push shaft 42 is inserted into the stepped groove 4 as shown in FIG.
It returns to the lower part of the inclined step part 41f of 1e.

By the way, in this gas tank, the pin 42b of the push shaft 42 is engaged with the inclined stepped portion 41f of the stepped groove 41e of the rotary cylinder 41 at the starting point of the rotation operation of the operation shaft 50, so that the pin 42b is integrated with the operation shaft 50. The rotating cylinder 41 is rotated and pushed down by the rotating operation of the pushing shaft 42, which rotates to open the closing member 20, and the auxiliary valve is opened via the pushing shaft 42. 30 to open it. Therefore,
As long as rotational force is applied to the operating shaft 50, the pin 42b will not be disengaged from the inclined stepped portion 41f, so the pilot gas passage 15 can be opened stably and is easy to use. In addition, in the gas tank, the operating mechanism 40 includes a rotating cylinder 41 and a pushing shaft 42.
Since the main component is only a small number of components, it is easy to manufacture and inexpensive. In particular, since there is no need to form an inclined cam portion on the inner circumferential surface of the cylindrical body as in the conventional case, the number of components is reduced, and manufacturing is easier and cheaper.

The above embodiment shows one embodiment of the present invention, and the present invention can also be applied to a gas tank equipped with an electromagnetic safety valve that closes the gas passage when the electromotive force of the thermocouple facing the main burner disappears. Of course, there is also a closure that is rotatably assembled into the inner hole of the Kotoku body and opens and closes the main gas passage, and a closure that is assembled so that it can be pushed in the axial direction and opens and closes the pilot gas passage. Various types of equipment including an auxiliary valve that opens and closes, an operating shaft that rotates the closure via an operating mechanism and pushes the auxiliary valve, and an ignition device that operates in conjunction with the rotational movement of the operating shaft. It can be applied to any type of automatic ignition gas tank.

As explained above, the present invention provides various types of automatic ignition gas cocks as described above, in which the operating mechanism is assembled between the mounting plate attached to the inner hole opening of the gas cock body and the closing member. A rotary cylinder located on the outer periphery of the shaft, one end of which is biased in a direction away from the closing element and resiliently engaged therewith; a push shaft that is loosely fitted to be able to push the valve and has a pin that extends outward through a pair of axially extending slits provided at the tip of the operating shaft, and has both ends protruding outward; The rotating tube is provided with an engagement protrusion that is removably engaged with the engagement hole provided in the mounting plate at the other end thereof, and has a locking step portion on the inner periphery of which the pin is locked. The pin is characterized in that the pin has a pair of stepped grooves extending in the axial direction into which the end portions of the pins fit and slide. Therefore, according to the present invention, the auxiliary valve is pushed open by the pushing shaft in which the pin is securely engaged with the step of the stepped groove of the rotary cylinder, so that the pilot gas passage is not opened. It is stable and easy to use, and has a small number of components, making it easy to manufacture and inexpensive.

[Brief explanation of drawings]

Figures 1 and 2 are longitudinal sectional views showing an example of a gas tank according to the present invention, and Figure 1 is a vertical sectional view showing an example of the gas tank according to the present invention.
Figure 2 is a vertical cross-sectional view of the gas kettle seen in the direction of the arrow in the figure, Figure 3 is a perspective view showing each component assembled in the kettle main body, Figures 4 and 5
The figure is a developed view showing the inner periphery of the rotating cylinder. Explanation of symbols, 10... Kotoku body, 13... Gas inflow passage, 14... Main gas passage, 15...
Pilot gas passage, 16...Mounting plate, 16a...
...Engagement hole, 20...Closer, 30...Auxiliary valve,
40...Operating mechanism, 41...Rotating cylinder, 41c...
Engagement protrusion, 41e...stepped groove, 41f...inclined stepped portion, 42...push shaft, 42b...pin, 50...
Operation axis, 60...Ignition device.

Claims (1)

[Scope of utility model registration request] A closer is rotatably assembled in the inner hole of the Kotoku body to open and close the main gas passage, and an auxiliary valve is assembled in the shutor so that it can be pushed in the axial direction to open and close the pilot gas passage. , an automatic ignition gas tank comprising an operating shaft that rotates the closing member and pushes the auxiliary valve via an operating mechanism, and an ignition device that operates in conjunction with the rotating operation of the operating shaft, The operating mechanism is assembled between the mounting plate attached to the inner hole opening of the Kotuku body and the closing member, and is located on the outer periphery of the operating shaft, and one end is attached to the closing member in a direction away from this. a rotary cylinder that elastically engages when pushed; and an axial direction provided at the tip of the operating shaft, into which the auxiliary valve is loosely fitted so as to be able to push the auxiliary valve into an inner hole provided at the tip of the operating shaft. a push shaft having a pin extending outward through a pair of slits extending outward, and a push shaft having a pin projecting outward at both ends; a pair of steps extending in the axial direction into which the end of the pin is fitted and slides, including an engaging protrusion that is removably engaged, and a locking step portion on the inner periphery of which the pin is locked; A gas tank for automatic ignition that is characterized by the formation of grooves.