JPH02192511A - Ignition control device - Google Patents

Abstract

PURPOSE:To prevent a shut-off valve from being held in an opening state when no operation of a member to be operated for ignition device which opens the shut-off valve this side of an intermediate position and actuates the member to be operate for ignition at a final terminal and releases the member to be operated from actuation by return of it to the intermediate position, the member to be operated is not locked to the intermediate position except press of it to the terminal end. CONSTITUTION:A swing lever 14 is mounted to a fixed member so that it can freely swing along a control lever 8 and is energized through the force of a spring 14a. An engaging segment 18 having an engaging piece 13 engaged with an engaging part 15 formed to the control lever 8 is pivotally supported by the root part of the swing lever 14, and is energized toward the control lever 8 side through the force of a spring 18a. A cam 16, brought into contact with the tip of the swing lever 14 through press of it to a terminal end position B and swinging the swing lever clockwise against the force of the spring 14a and causing the engaging piece 13 to face on the moving locus of the engaging part 15, is mounted to the control lever 18. A moving frame 20 energized through the force of a spring 20a is mounted on the control lever 8 side, and a pin 17 is provided movably forward to and backward from the swing locus of the swing lever 14. When press by the control lever 8 is rendered ineffective this side of a terminal end, the cam 16 does not act the swing lever 14, the engaging piece 13 is not engaged with the engaging part 15, and the control lever 8 is returned to a starting position A.

Description

[Detailed description of the invention] The present invention relates to an ignition operating device for gas appliances.

The applicant of the present application has previously developed an ignition operating device for a gas appliance, for example, as shown in FIG. The locking device C locks the first operating lever at an intermediate position when the pressure is released, and the second operating lever d releases the operation of the locking device C. The member and the shutoff valve are pushed by the first operating lever, and when the first operating lever is pushed beyond the intermediate position to a terminal position, the ignition operated member is actuated and returned to the intermediate position. In addition to solving this problem, we proposed a method in which, when the first operating lever is pressed to the terminal position, the shutoff valve is pushed open before the intermediate position, and is pressed and held in that state at the intermediate position.

However, this locking device C has a projection e on the first operating lever.
A lock piece f that engages with the rear end is biased toward the protrusion e by a spring g, and when the first operating lever is pressed beyond the intermediate position, the lock piece r engages with the protrusion e. Generally, it is configured so that it faces the rear end, and according to this, even if the pressing operation is released without pushing the first operating lever to the terminal position, if the first operating lever is past the intermediate position, the first operating lever is The locking piece f engages with the rear end of the projection e, and the first operating rod is locked in the intermediate position, and the shutoff valve is in an open state even though the ignition operated member is not operated. If the operated member for ignition is a igniter, ignition will not be performed and there is a concern that raw gas will be released from the burner, and if the operated member for ignition is a safety valve, the safety valve may not be activated. 1st even though it is not open
There are inconveniences such as the operating lever being locked in an intermediate position and maintaining a state as if it were in the ignition operating state.

The object of the present invention is to obtain a device free from such inconveniences, and is a gas appliance comprising an ignition operated member and a shutoff valve interposed in a gas passage, which resists a return spring. a first operating rod that can be pressed and operated from a starting position to an intermediate position and then to a terminal position; a locking device that locks the first operating rod at an intermediate position when the first operating rod is released from pressure and returns to the starting position with a spring; and a second operating rod that releases the locking of the first operating rod by the locking device, and the ignition operated member is actuated by pressing the first operating rod to a terminal position beyond the intermediate position. When the first operating rod is pressed from the starting end position to the ending position, the shutoff valve is opened before the intermediate position and when the locking device locks the shutoff valve at the intermediate position. In a device in which the valve is kept in an open state by pressing with a first operating rod, the locking device is provided with a swinging lever provided with an engaging piece provided on one of the first operating rod and the fixed member, and a swinging lever provided on the other side. Relative movement between the engaging part on the swinging lever and the engaging part, which acts on the swinging lever when the first operating rod is pressed to the terminal position. It is comprised of a cam that moves so that the trajectories match, and a holding means that acts on the swing lever to keep the relative movement trajectories of the engaging element and the engaging part in the same state. .

The present invention will be explained with reference to embodiments shown in FIG. 2 and below. Second
In the figure (1) is the main gas burner (1a) and the ignition burner (1b).
), (2) indicates a gas control unit, the gas control unit (2)
In this, a shutoff valve (3) connected to the main gas burner (1a), an electromagnetic safety valve (4) connected in series to this, and an ignition valve (5) connected to the ignition burner (1b) are incorporated, and these valves (3) ( 4)
(5) are opened and closed by a common operating rod (6), and a fixed frame (7) is fixedly installed at the front end of the unit (2), and the operating lever (6) is attached to the fixed frame (7). ) is slidably inserted in the front-rear direction, and the push button (8a) at the front end is attached to the first operating lever (8). ) can be pressed freely from the starting end position A to the rear end position B against the return spring (8b), and further the return spring (8b) moves the first operating rod (8) from the terminal end position B to the starting end position A. A locking device (9), which will be described in detail later, operates to lock the return operation at intermediate position C, and a second operating lever (10, which will be described in detail later) releases the operation of the locking device (9).
) to lock the first operating rod (8) in the intermediate position C after being pushed to the terminal position B, and to lock the second operating rod (10
) to return to the starting position A.

According to the pressing operation from the starting end position A of the first operating rod (8), the shutoff valve (3) is first opened via the operating rod (6) before the intermediate position C, and then the shutoff valve (3) is opened before the intermediate position C. By pushing from position C to terminal position B, the safety valve (4) is pressed open and the ignition valve (5) is opened, and the ignition switch (11) provided on the fixed frame (7) is opened. ) is turned on by being pushed by the protrusion (8c) on the first operating rod (8), and the igniter (12) facing the ignition burner (1b) is activated to ignite the main burner (1a). ignition burner (1b) is provided, and then the first operating rod (8)
When the pressing operation is released and the valve is returned to the starting end position A side, the shutoff valve (3) is held in the open state at the intermediate position C where it is locked by the locking device (9). The ignition switch (11) and the ignition valve (5) are switched to an off state and a closed state, respectively, so that the igniter (12) is inactivated and the ignition burner (1b) is extinguished, and the safety valve is turned off. (4
) is released to provide steady combustion to the main burner (1a), and then the second operating lever (10) is operated to lock the first operating lever (8) by the locking device (9). ) is released, the first operating rod (8) is returned to the starting position A, the shutoff valve (3) is closed, and the main burner (1a) is extinguished.

In addition, during steady combustion, the safety valve (4) is connected to the main burner (1a).
The valve is held open by output from a thermocouple or other flame detection element (not shown) facing the valve. As is clear from the above description, in the illustrated embodiment, the ignition operated member to be activated by pressing the first operating rod (8) beyond the intermediate position C to the terminal position B is the electromagnetic safety valve (4). , ignition valve (5),
Consists of an ignition switch (11), an ignition burner (1b)
If the ignition valve (5) is omitted so that direct ignition can be given to the main burner (1a), the ignition valve (5) is not necessary, and the electromagnetic safety valve (4) can also be omitted.

In any case, it is the same as if the first operating rod (8) is locked in the intermediate position C and the ignition operated member is in the operating state even though the ignition operated member is not operated for safety reasons or other reasons. It is not desirable to be kept in

Therefore, in the present invention, the locking device (9) is attached to an engager (13) provided on one of the first operating rod (8) and the fixed member side.
an engaging portion (15) with which the engaging element (13) provided on the other side engages, and the first operating rod (8).
) on the movable lever (18) to the terminal position.
3) and the engaging part (15), and a cam (16) that moves the engaging part (15) so as to match the relative movement loci, and a cam (16) that acts on the swinging lever (18) to move the engaging part (13) and the engaging part (15). Engagement part (
15) and a holding means (17) for keeping the relative movement loci of is prevented from being locked at intermediate position C.

To explain this in more detail with reference to FIGS. 3 and 4, the swing lever (14) is attached to a side surface of the first operating rod (8) so as to be able to swing freely along this.

The swing lever (14) is supported by a fixed member so as to be biased upward by a spring (14a), and the swing lever (14) has an engaging portion (15) formed on the first operating rod (8). An engagement piece (18) having the engagement element (13) at its tip that engages with the engagement hole as a spring (18a) is pivotally supported at its root.
to urge the engaging element (13) toward the first operating rod (8),
Further, when the first operating rod (8) is pressed to its end position B, it comes into contact with the tip of the swinging lever (14) and springs it.
14) in a clockwise direction against the engaging piece (18).
) is provided with a cam (16) that makes the engaging element (13) at the tip thereof face the movement locus of the engaging portion (15), and a first operating lever (8) is provided on the side of the first operating lever (8). Spring on the side (20a)
A movable frame (20) is provided which is biased by the movable frame (20).
A pin serving as the holding means (17) is provided so as to be movable forward and backward on the swing locus of the swing lever (14).

Thus, when the first operating rod (8) is pushed from the starting position A to the final position B, the swinging lever (14) is pushed by the cam (16) at the final position B and swings clockwise. When the first operating lever (8) is moved back by the spring (8b) and the first operating lever (8) is then released, the swinging lever (14) is held at its tip by the holding means (17). The engager (13
) is moved on the movement trajectory of the engaging portion (15) provided on the ml operating rod (8) and is maintained at a position where it can engage with the engaging portion (15), and the first operating rod (8) When the lever returns to the intermediate position C, the engaging element (1) is attached to the engaging portion (15) as shown in FIG.
3) is engaged to lock the first operating rod (8) in the position.

However, if the first operating rod (8) is released without being pressed to its final position, the cam will not act on the swinging lever (14), and therefore the swinging lever (14) will move as shown in FIG. state, that is, the engager (13) provided on the first operating rod (
8), the engaging portion (15) provided in the engaging portion (15) remains out of the movement trajectory.
) does not engage with the first operating rod (8).
It is bounced by the spring (8b) and returns to the starting position A. The movable frame (20) moves in a direction away from the first operating lever (8) in conjunction with the second operating lever (10),
To explain this, there is a protrusion (1) on the second operating rod (10).
0c), and when the protrusion (10c) pushes the bottle (20b) on the movable frame (20), the movable frame (20) releases the spring (20
a) in a direction away from the first operating rod (8). Therefore, if a lock release lever (21) that engages with the engagement piece (18) is attached to the movable frame (20) and the second operation lever (10) is pressed, the movable frame (20) By moving away from the first operating rod (8), the lock releasing rod (21) releases the engagement between the engaging portion (15) and the engaging element (13), and the first operating rod (8) is rebounded by the spring (8b) and returned to the starting end position A, and the holding means (17
) is retracted from the position where it engages with the swing lever (14).

Therefore, the swing lever (14) is pulled by the spring (14a) and swings counterclockwise to return to the state shown in FIG. 3.

In the above-mentioned embodiment, the engaging element (13) is provided on the fixed member side.
A swing lever (14) with a first operating lever (8) is provided.
When the engaging part (15) with which the engaging element (13) engages and the first operating rod (8) are pressed to the end position, the swinging lever (14) is actuated to cause the swinging. A cam (16) for moving the engaging element (13) on the lever (14) onto the movement locus of the engaging part (15) is provided. A swing lever (14) is provided,
On the fixed member side, there is an engaging portion (
15) and the first operating rod (8) are pressed to the final position, the swinging lever (14) is actuated, and the swinging lever (14) is pressed.
4) An engaging portion (
Needless to say, a cam (16) may be provided to move the device to the position 15).

In this way, according to the present invention, the locking device is
A swinging lever including an engaging element provided on one side of an operating rod and a fixed member, an engaging portion with which the engaging element provided on the other engages, and the swinging lever when the first operating rod is pressed to a terminal position. a cam that acts on the swing lever to move the engagement element on the swing lever so that the relative movement loci of the engagement part and the engagement part coincide; Since the holding means keeps the relative movement trajectories of the joints in the same state, unless the first operating rod is pushed from the starting end position to the ending position and the ignition operated member is operated, the first operating rod The problem with the previously proposed method is that the operating rod is not locked in the intermediate position, that is, the first operating rod is locked in the intermediate position even though the ignition operated member is not activated. The effect is that it can be easily resolved.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway plan view of the ignition operating device according to the earlier proposal, and FIG. 2 is a cutaway plan view of an example of the device of the present invention.
FIG. 3 is a perspective view of the main part, and FIG. 4 is a perspective view of the main part in an operating state. . (3)...Shutoff valve (4)...Solenoid safety valve (5)...Ignition valve Ignition operated member (11)
...Ignition switch (8)...First operating rod (9)...Lock device (10)...Second operating rod (13)...Engagement element (14)...Swing lever (15)...Engaging portion (16)...Cam (17)...Retaining means Patent applicant Rinnai Co., Ltd. Figure 3 Figure 4 Procedure amendment

Claims (1)

[Claims] A gas appliance comprising an ignition operated member and a shutoff valve interposed in a gas passage, the first operating rod being pressable from a starting position to an intermediate position to a terminal position against a return spring; A locking device that releases the pressure on the first operating rod and locks the first operating rod in an intermediate position when returning to the starting position side by a spring, and a second operating rod that releases the locking of the first operating rod by the locking device. The ignition operated member is actuated by pressing the first operating rod beyond the intermediate position to the terminal position, and released by returning to the intermediate position, and the first operating lever moves from the starting position to the terminal position. When the locking device is pressed to the intermediate position, the shutoff valve is pushed open before the intermediate position, and when the locking device is locked at the intermediate position, the first operating rod is used to keep the valve in the open state when the locking device is pressed. a swinging lever having an engager provided on one of the first operating rod and the fixing member, an engaging portion engaged by the engager provided on the other, and the first operating rod being pressed to a terminal position. a cam that acts on the swinging lever to move the engaging element on the swinging lever so that the relative movement loci of the engaging part match the engagement part; An ignition operating device comprising an engaging element and a holding means for keeping the relative movement loci of the engaging part in the same state.