JPS632777Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a gas cooker for use in gas cookers and other gas appliances.

As a conventional device of this type, the following is known from Japanese Patent Application Laid-open No. 105222/1983.

As shown in Figs. 1 and 2, this device consists of a lower taper plug b rotatably housed in a kettle body a, and a cover plate c on the upper surface of the kettle body a that is rotatably inserted into the cap. A rotating cylinder f, which is engaged with the upper end of the taper plug b so as to be freely movable downward against a spring e, is lowered by a cam mechanism according to the rotation. A connector h is inserted into the rotary cylinder f into the lower end of the operation shaft d and engaged with the lower end of the operating shaft d so as to be freely movable downward against a spring g.
is engaged with a stepped guide groove j formed in the rotating tube f in the vertical direction at a protrusion i on its outer periphery, and when the operating shaft d is rotated from the stop position, the protrusion i
is engaged with the downward step k of the guide groove j, and the rotation of the rotary tube f and the downward movement of the connector h accompanying the downward movement of the rotary tube f by the cam mechanism are given. The rotation of the rotary tube f opens the taper plug b, and the downward movement of the connector h presses, for example, the safety valve m via the operating rod l. Opening the valve and
The opening of the pilot valve n is provided.

However, in this device, the cam mechanism that provides the downward movement of the rotary cylinder f is comprised of a cylindrical cam o equipped with an inclined cam surface on the lower surface installed in the Kotoku body a, and the rotary cylinder f in contact with the cam surface. Generally, the cylindrical cam o is constructed with a protrusion p on the outer circumferential surface, which has the disadvantage that the number of separate parts of the cylindrical cam o increases and it takes time and effort to assemble the cylindrical cam o.

In this case, it is possible to reduce the number of parts by integrally forming the cylindrical cam o on the lower surface of the cover plate c on the upper surface of the main body a, but in order to integrally form the cylindrical cam o, the cover plate c It is necessary to cast and mold, which has the disadvantage that the unit cost is higher than that of sheet metal.

The purpose of the present invention is to provide a device that eliminates such inconveniences, and includes a lower taper stopper 2 that is rotatably housed in the kettle body 1, and a lid plate 3 on the upper surface of the kettle body 1. A rotary tube 6, which is engaged with the upper end of the taper plug 2 so as to be freely movable downward against the spring 5, is connected between the upper operating shaft 4 and the upper operating shaft 4, which is rotatably inserted into the taper plug 2. According to the invention, a connector 8 is provided to be moved downwardly by a cam mechanism, and a connector 8 is inserted into the rotary cylinder 6 and engaged with the lower end of the operating shaft 4 so as to be freely movable downwardly against a spring 7. Then, the protrusion 9 on the outer periphery of the connector 8 is engaged with the vertically stepped guide groove 10 formed in the rotary cylinder 6, and the operating shaft 4 is rotated from the rest position. , the protrusion 9 engages with the downward step 10a of the guide groove 10, and the rotation tube 6
, and the downward movement of the connector 8 in accordance with the downward movement of the rotating cylinder 6 by the cam mechanism. It consists of a hole 11 and a cam-shaped protrusion 12 that is inserted into the through hole 11 and is integral with the rotating tube 6.

FIG. 3 shows one example of this, and the Kotoku main body 1 has a gas inlet 13 on one side, a main gas passage hole 2a formed in the taper plug 2 by opening the taper plug 2 in the inlet 13, and a gas inlet 13 on one side. The two gas outlets 14, 15 on the other side are connected to each other via the pilot gas passage 2b.
That is, it is provided with a main gas outlet 14 connected to the main burner and a pilot gas outlet 15 connected to the pilot burner, and furthermore, a safety valve 16 is interposed between the main gas passage hole 2a and the main gas outlet 14. It was designed to be prepared. As clearly shown in FIG. 4, the rotary tube 6 is vertically movably engaged with a vertical slit 18 formed in the tube at the upper end of the taper plug 2 at a hanging piece 17 protruding from its lower end. The above-mentioned stepped guide groove 10 is formed on the inner peripheral surface, and the above-mentioned cam-shaped protrusion 12 is formed on the upper surface, and the rotating cylinder 6 is urged upward by the spring 5. The projecting piece 12 is inserted into the through hole 11 of the cover plate 3 described above.

Note that the cover plate 3 is made of a sheet metal and is also used as a mounting base plate for the piezoelectric device 19.

The connector 8 is formed into a cylindrical shape that is loosely fitted to the outer periphery of the lower end of the operating shaft 4, and is inserted into the rotary cylinder 6 and connected to the protrusion 9 on the outer periphery of the rotary cylinder 6. A pin portion that is engaged with the guide groove 10 and extends into the connector 8 that is integrated with the protrusion 9 is provided with a vertical slit 20 formed at the lower end of the operating shaft 4 so as to be vertically movable. Furthermore, the lower end of the connector 8 is brought into contact with the operating rod 21 extending downward via the taper plug 2, and the connector 8 is urged upward together with the operating rod 21 by the spring 7. When the connector 8 moves downward against the spring 7, the operating rod 21
The pressure opening operation of the safety valve 16 is applied through the valve.

Incidentally, when the operating rod 21 moves downward, it also serves as a valve body for opening the pilot gas valve 22 interposed between the main gas passage hole 2a and the pilot gas passage hole 2b. Next, to explain the operation, according to the rotation operation of the operating shaft 4 from the position shown in FIG.
is rotated accordingly, and the rotary cylinder 6 is rotated via the connector 8 with the protrusion 9 engaged with the downward step 10a of the guide groove 10 as shown in FIG. 5a. is given.

When the rotating tube 6 rotates, a cam mechanism consisting of a cam-shaped protrusion 12 at the top and a through hole 11 passing through the protrusion 12 causes a spring 5 to be applied to the rotating tube 6 as it rotates.
A downward movement is applied against the force of the spring 7, and a downward movement against the spring 7 is also applied to the connector 8 via the protrusion 9 that engages with the stepped portion 10a, resulting in the state shown in FIG. 5b.

At this time, the taper plug 2 is opened by the rotation of the rotary cylinder 6, the safety valve 16 is pressed open via the operating rod 21 by the downward movement of the connector 8, and the pilot gas valve 22 is opened. A further activation of the piezoelectric device 19 is provided to provide ignition of the main burner via the pilot burner.

When the operating shaft 4 is then released, the protrusion 9 is disengaged from the stepped portion 10a and is allowed to move upward along the guide groove 10 as shown in FIG. At the same time, it is moved upward by the elastic force of the spring 7, the pressure on the safety valve 16 is released, and the pilot gas valve 22 is closed.

In the above embodiment, the gas tank device is equipped with both the safety valve 16 and the pilot gas valve 22, which are opened by the downward movement of the connector 8, but it may be equipped with only one of the valves 16, 22. Alternatively, it may be provided with a member other than the valve operated by the downward movement of the connector 8.

As described above, according to the present invention, the cam mechanism that gives the rotary cylinder 6 a downward movement as it rotates is provided in the through hole 11 bored in the cover plate 3 on the top surface of the Kotuku main body 1, and in the through hole 11. It is composed of a cam-shaped protrusion 12 that is integrated with the rotary cylinder 6 that is inserted, and the separate cylindrical cam in the conventional type is unnecessary, reducing the number of parts. It is sufficient to simply perform the hole-drilling process, and the cover plate 3 is made of sheet metal, which has the effect of being obtained at a low cost.

[Brief explanation of the drawing]

Figure 1 is a cutaway side view of a conventional device, Figure 2 is an exploded perspective view of its component parts, Figure 3 is a cutaway side view of an example of the device of the present invention, and Figure 4 is an exploded view of its component parts. A perspective view of the state, FIG. 5 abc is a line diagram of the rotating cylinder in the unfolded state, illustrating its operation. 1...Kottoku body, 2...Taper stopper, 3...Lid plate, 4...Operation shaft, 5...Spring, 6...Rotating tube,
7...Spring, 8...Connector, 9...Protrusion, 10...
...Guide groove, 10a...Step, 11...Through hole, 1
2...Protrusion.

Claims (1)

[Scope of utility model registration request] The taper plug 2 is installed between a lower taper plug 2 that is rotatably accommodated in the kettle body 1 and an upper operating shaft 4 that is rotatably inserted through the cover plate 3 on the top surface of the kettle body 1. A rotary tube 6 is provided at the upper end of the rotary tube 6, which is engaged with the rotary tube so as to be freely movable downward against the spring 5, so that it is moved downward by a cam mechanism when the rotary tube 6 is rotated. A connector 8 is inserted into the lower end of the operating shaft 4 in a rotationally engaged manner so as to be freely movable downward against the spring 7, and the connector 8 is formed into the rotary cylinder 6 by a protrusion 9 on its outer periphery. Engage with the stepped guide groove 10 in the vertical direction,
When the operation shaft 4 is rotated from the rest position, the protrusion 9 engages with the downward step 10a of the guide groove 10, thereby causing the rotation of the rotation tube 6 and the rotation of the rotation tube. In the device in which the downward movement of the connector 8 accompanying the downward movement by the cam mechanism of No. 6 is provided, the cam mechanism is connected to a through hole 11 formed in the cover plate 3 and a through hole 11 formed in the cover plate 3.
A gas cock device comprising a cam-shaped protrusion 12 integrated with the rotary cylinder 6 which is inserted into the rotary cylinder 6.