JPS6362661B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an ignition operating device for a gas appliance such as a gas stove.

Operation members such as the ignition lever and ignition knob used to ignite gas appliances should clearly indicate whether they are in the ignition state or in the standby state.
Generally, the device is configured so that it does not return to the standby position after completing the operation, but instead stops at an intermediate position.
However, in conventional devices of this type, the position when the operating member returns and the pilot valve closes is relatively close to the standby position, making it difficult to clearly indicate the ignition state.

The present invention has focused on this point, and has been made for the purpose of providing an ignition operating device for gas appliances that makes it easy to understand the ignition state. a first cam that is rotated by a second cam, and a second cam that is energized with a force for returning to a standby position and that is connected to the first cam so as to be rotatable at a certain angle relative to the first cam. Then, the force for returning to the standby position is applied, and the third cam is rotated by the operation of the ignition operating member in the same way as the first cam, and is locked at the ignition position. It has an ignition lever that is pushed to operate the main valve opening/closing button, and an engagement pin that is pushed by the cam portions of the second cam and the first cam, and is rotated by the second cam during ignition operation, and an intermediate lever that is held in a rotating state by a first cam in the latter half of the ignition operation; a pilot lever that is pushed by the intermediate lever and rotated by the rotation of the intermediate lever to operate a pilot valve opening/closing button; When the first cam returns to the position where its rotation is restricted by the third cam in the locked state upon completion of the ignition operation, the engagement pin of the intermediate lever engages the cam portion of the first cam. At the same time, the second cam also rotates slightly in the return direction, and the engagement pin of the intermediate lever rides on the slope formed on the axially facing side surface of the cam portion of the second cam.
It is characterized in that the cam portions of the first cam and the second cam are configured in such a shape that the intermediate lever rotates in the return direction until the pilot valve is closed.

That is, in the present invention, the pilot lever is operated by the first and second cams, and the ignition lever is operated by the third cam, and in the latter half of the ignition operation, the third cam is locked to keep the main valve open. Since the pilot valve is held in the open state by the first cam, the pilot valve can be closed by a slight rotation of the first cam in the return direction, and the ignition operating member This makes it easier to clearly display the ignition state by reducing the amount of return. In addition, in this ignition state, the engagement pin of the intermediate lever rides on the inclined surface of the second cam, so when the lock is released by the extinguishing operation and the second cam returns to the standby position, the engagement pin is The second cam can be returned to its original position while sliding on the inclined surface, and the intermediate lever hardly needs to rotate, so the space around the intermediate lever can be reduced and the device can be made more compact. be.

Next, the present invention will be specifically explained with reference to an illustrated embodiment.

Fig. 1 is a partially cutaway schematic plan view of the whole, Fig. 2 is a front view of the fire power adjustment operation section, and A is the ignition/extinguishing operation section that opens and closes the gas valve and ignites the burner;
B is a thermal power adjustment operation unit that adjusts the gas flow rate.

1 and 2 are piano touch type ignition operation members and extinguishing operation members, respectively, which are supported by a support shaft 5 attached to a frame 4;
is a sliding firepower adjustment member, and the support shaft 5
The guide shaft 5a coaxially extends from one end of the guide shaft 5a. Reference numeral 6 denotes a gas tank main body which is fixed to the frame 4, and a main valve and a pilot valve installed therein are opened and closed by pressing a main valve opening/closing button 7 and a pilot valve opening/closing button 8. Reference numeral 9 denotes a gear cam of a gas flow rate regulator (not shown), which rotates in mesh with a sector gear 10 connected to the thermal power adjustment member 3 to adjust the gas flow rate. A piezoelectric igniter (not shown) is provided at the right end of the support shaft 5 and is activated by rotation of the shaft.

Reference numeral 11 denotes an ignition operation cam made of a U-shaped metal fitting fixed to the support shaft 5, and the operation portion 1a is integrally molded to constitute a part of the ignition operation member 1. Further, numeral 12 denotes a first cam made of a flat metal fitting, which is disposed inside the ignition operation cam 11 and is fixed to the support shaft 5 similarly to the cam 11. 13
is the second cam made of resin mold, and the first cam 1
It is loosely inserted into the support shaft 5 adjacent to the support shaft 2. Reference numeral 14 denotes a third cam made of a U-shaped metal fitting, which is disposed inside the ignition operating cam 11 and loosely inserted into the support shaft 5. Reference numeral 15 denotes a fire extinguishing operation cam made of a U-shaped metal fitting, in which the operating portion 2a is integrally molded and constitutes a part of the fire extinguishing operation member 2, and the support shaft 5
It is loosely inserted into.

FIG. 3 is a perspective view of each of these cams 11 to 15, and the ignition operation cam 11 is provided with a D-shaped hole 17 for non-rotatably mounting it on the support shaft 5, as shown in FIG. 3a. Notch 1 at the bottom of one side piece
8 is formed. The first cam 12 is shown in FIG.
As shown in the figure, a D-shaped hole 20 is provided for non-rotatably mounting on the support shaft 5, and a cam portion 21 having a shape having a hook 21a and circumferential edges 21b and 21c continuing on both sides of the hook 21a is formed at the bottom. , an engaging pawl 22 is formed adjacent to the cam portion 21. The second cam 13 is provided with a round hole 24 for loose insertion into the support shaft 5, as shown in FIG. A cam portion 26 is formed following this, and an engaging protrusion 27 is formed on the upper part.
is provided. The cam portion 26 is provided so as to partially overlap the cam portion 21 of the first cam 12, and has a notch portion 26b extending from the circumferential edge 26a toward the center, and further has a notch portion on the side surface. 26b has a shallow sloped surface 26c. Further, the third cam 14 is provided with a round hole 29 for rotatably attaching it to the support shaft 5 as shown in FIG. 3d, and a cam portion 30 having a circumferential edge 30a on one side piece. is provided protrudingly, and a lock groove 31 is provided at the top.
However, there is also a notch 18 for the ignition operation cam 11 at the bottom.
Engagement pawls 32 that engage with are respectively formed. As shown in Fig. 3e, the fire extinguishing operation cam 15 has a round hole 34 formed therein for rotatably attaching it to the support shaft 5, and a convex cam portion 35 for unlocking is formed on one side piece. A protrusion 36 for interlocking with the firepower adjustment operation part B is protruded from the lower part of the other side piece.

41 is a bearing plate fixed to the frame 4; 42 is a second support shaft provided below the support shaft 5; 43
44 is a pilot lever consisting of a spring plate fixed to a second support shaft 42, and 44 is a bearing plate 41 connected to a shaft 45
The intermediate lever 44 has an engagement pin 46 that slides into contact with the cam portions 21 and 26 of the first cam 12 and the second cam 13, and a drive pin that contacts the pilot lever 43. 47 are provided. Reference numeral 48 denotes an ignition lever made of a spring material, and its upper end is fixed to the frame 4 so as to be in sliding contact with the cam portion 30 of the third cam 14. When activated, the ignition lever 48 and the pilot lever 43 each act as a main valve opening/closing button. 7 and the pilot opening/closing button 8 are pressed.

Return springs 51, 52, 53, and 54 are coil springs fitted into the support shaft 5. The return spring 51 is a return plate 51a whose one end is fixed to the support shaft 5.
Then, by locking the other end to the upper plate (not shown) of the frame 4, rotational force in the return direction is applied to the support shaft 5, and the first cam 12 and the ignition operation cam 11, that is, the ignition operation member 1 energizes the restoring force. Further, the return spring 52 has one end engaged with the upper plate (not shown) of the frame 4 and the other end engaged with the third cam 14 to apply a return force to the third cam 14 . The return spring 53 has one end engaged with the engagement protrusion 27 of the second cam 13 and the other end engaged with the upper plate of the frame 4 to apply a return force to the second cam 13. Further, the return spring 54 has one end engaged with the frame 4 and the other end engaged with the extinguishing operation cam 15 to apply a return force to the extinguishing operation cam 15, that is, the extinguishing operation member 2. As shown in FIGS. 6 and 7, a locking member 55 having a locking portion 55a that engages with the locking groove 31 of the third cam 14 is provided on the upper plate of the frame 4, and is held by a leaf spring 56. and is biased downward.

The firepower adjustment operation section B includes a slider 61 that is slidably inserted into the guide shaft 5a, and an operation section 3 that is integrally molded with a guide plate 62 that is fixed to the slider 61.
The forked part 10a of the sector gear 10 is connected to a guide plate 62 by a pin 63, and the operating part 3a is connected to the guide plate 62 by a pin 63. By moving it left and right, the gear cam 9 of the gas flow regulator is driven via the sector gear 10. Moving the operating part 3a to the left reduces the firepower, and moving it to the right decreases the firepower. It's starting to get bigger.

On the opposite side of the gear part of the sector gear 10 is a pin 64.
A link 65 is connected to the frame 4 through an elongated hole 65a, and a pin 66 connects the frame 4 to the other end of the link 65.
An interlocking arm 67 supported by is connected via a pin 68. and the tip 6 of the interlocking arm 67
7a is introduced into the extinguishing operation section A, and when the operation section 2a of the extinguishing operation member 2 is pushed down, the protrusion 36 of the extinguishing operation cam 15 pushes the tip 67a, and the sector gear 10 rotates counterclockwise. Firepower adjustment member 3
is adapted to move to the maximum firepower position (the position shown in FIG. 2) at the right end of the guide shaft 5a. Further, a lock lever 69 as shown in FIG. 4, which is rotatably supported by the second support shaft 42, is provided at the lower part of the ignition/extinguishing operation section A.
A cutout portion 69a is formed in which the portion 7a engages. This lock lever 69 is urged upward by a spring (not shown) and is kept horizontally in the extinguished state, but as will be described later, in the ignited state, the ignition lever 69
8, the interlocking arm 67
The tip 67a does not engage with the notch 69a, and in the extinguished state, the tip 67a engages with the notch 69a, restricting the rotation of the interlocking arm 67, and making it impossible to move the firepower adjustment member 3 to the left. ing.

71 is a partition plate that constitutes a part of the frame 4;
It is located between the ignition/extinguishing operation section A and the fire power adjustment operation section B, and supports the end of the support shaft 5 passing through it, and the interlocking arm 67 passes through the elongated hole 71a. In addition, a partition plate 71 is provided on the guide plate 62 of the firepower adjustment member 3.
A locking piece 72 is provided protruding in the direction, and an insertion hole 73 is formed in the partition plate 71 correspondingly. Further, a block plate 74 is fixed to the end of the support shaft 5, and the insertion hole 73 is opened and closed according to the rotation of the support shaft 5, as shown by the chain line in FIG. The chisel lock piece 72 can be inserted into the insertion hole 73.

In this way, in the extinguished state, the fire power adjustment member 3 is always at the maximum fire power position and cannot move toward the minimum fire power position, so that ignition is always performed at the maximum fire power state. Furthermore, when the fire power adjustment member 3 is moved to the right in the extinguished state, the lock piece 72 is inserted into the insertion hole 73 and the support shaft 5 cannot be rotated, and the ignition operation member 1 is locked and cannot be pushed down. This prevents the fire from being accidentally ignited by a child or the like.

The thermal power adjustment operation section B is provided with a moderation mechanism for positioning the thermal power adjusting member 3 and the like. That is, as shown in FIG. 2, a moderation ball 76 is provided at the upper end of the slider 61 and urged upward by a spring 77, and the upper plate 4a of the frame 4 covering the firepower adjustment operation part B corresponds to this. Cutouts 78, 79 and 80 are provided for moderation. Notch 7
Reference numerals 8 and 79 are formed with holes or appropriate recesses, and the notch 78 is used to control the moderation ball 76 when the fire power adjustment member 3 returns to the maximum fire power position in conjunction with the operation of the fire extinguishing operation member 2. The notch 79 is provided at a position where the moderation ball 76 engages when the fire extinguishing operation member 2 is moved further to the right to lock the ignition operation member 1. The notch 80 is formed by providing an upwardly inclined piece 80a at a position where the moderation ball 76 is engaged while the fire power adjusting member 3 is moved to the minimum fire power position. This notch 80 is to prevent the fire from extinguishing or abnormal combustion if the firepower is suddenly lowered. , any shape is sufficient as long as it feels almost no resistance when increasing the firepower, and other shapes can also be adopted.

Next, the operation of the ignition/extinguishing operation part A will be explained with reference to FIG. 6 and the following drawings. Note that these drawings only show parts related to the ignition operating member 1, and in order to avoid complicating the drawings, return springs such as 51 are omitted. FIG. 6 shows the operating mechanism of the pilot valve, and FIG. 7 shows the operating mechanism of the main valve. 8a and 9a show the standby state, that is, the extinguished state, FIG. 8b shows the state where the ignition operation member 1 has been pushed down a little after starting the ignition operation, and FIGS. 8c and 9b show the state Figures 8 d and 9 c show the state in which it is pushed down further, and Figure 8 e shows the state in which the ignition operating member 1 is held at the ignition position after the ignition operation has been completed. . In the standby state, the main valve opening/closing button 7 and the pilot valve opening/closing button 8 are kept in a protruding state by built-in springs, and the main valve and pilot valve of the gas tank main body 6 are closed.

When the ignition operation starts and the ignition operation member 1 begins to rotate, the engagement pin 46 is first pushed by the cam portion 26 of the second cam 13, the intermediate lever 44 rotates, and the pilot is activated via the drive pin 47. The lever 43 is also pressed and rotated, and the pilot valve opening/closing button 8 is pressed to open the pilot valve as shown in FIG. 8b. On the other hand, in response to the rotation of the support shaft 5, an igniter (not shown) is activated and a pilot burner (not shown) is ignited, and the third cam 14 is also rotated by being pushed by the ignition operation cam 11. As shown in FIG. 9b, the ignition lever 48 is pushed by the edge 30a of the cam part 30 of the third cam 14, and the main valve opening/closing button 7 is pushed to open the main valve, and the main burner (not shown) is pressed. ) is ignited. When the ignition lever 48 is in the state of pressing the open/close button 7 in this way, the tip of the ignition lever 48 pushes the top surface of the lock lever 69 as shown in FIGS. 5b and 5c, and the lock lever 69 rotates downward and engages The arm 67 no longer engages with the notch 69a, making it possible to adjust the firepower. As the second cam 22 further rotates, the engagement pin 46 comes to come into sliding contact with the edge 26a as shown in FIG. 8c, and the intermediate lever 44 is maintained in the rotated state.

Subsequently, when the ignition operating member 1 is pushed to the state shown in FIG. Since the diameter of the edge 21c is set slightly smaller than that of the edge 26a, the intermediate lever 4
4 returns slightly counterclockwise, but the button 8 remains pressed, and the ignition lever 48 slides against the edge 30a, so that the button 7 also remains pressed. Then, as shown in FIG. 9c, at this position, the locking portion 55a of the locking member 55 engages with the locking groove 31 of the third cam 14, and the third cam 14 is locked.

This completes the ignition operation, so ignition operation member 1
When you stop pressing , the support shaft 5 moves to the third cam 14
The engaging pawl 32 of the ignition operating member 1 is rotated clockwise by the return spring 51 to the position where it is regulated by the notch 18 of the ignition operating cam 11, and the ignition operating member 1 and the first cam 12 are also rotated together and the first cam 12 is rotated clockwise. The state shown in Figure 8e is reached. That is, since the first cam 12 rotates, the engagement pin 46
With the rotation of the cam 13 blocked, it comes off the edge 21c, and the intermediate lever 44 rotates due to the return force of the pilot lever 43 and falls toward the edge 21b, causing the inclined surface of the cam portion 26 of the second cam 13 to rotate. 26c
The second cam 13 is rotated clockwise and the intermediate lever 44 is rotated counterclockwise until the engagement pin 46 is raised to the position shown in FIG. do. Then, the pilot lever 43 separates from the pilot valve opening/closing button 8, and the pilot burner turns off. If the shape of the inclined surface 26c and the position of the engagement pin 46 are appropriately selected, the rotation angle of the support shaft 5 returning from the state shown in FIG. 8 d to the state shown in FIG. 8 e can be reduced. hand,
The angle θ relative to the state shown in FIG. 8a can be made considerably large, and it becomes easy to visually confirm that the ignition state is in place. Note that even if the ignition operating member 1 is operated again in the ignition state, the first
The hook 21a of the cam 12 hits the engagement pin 46 and stops.

When extinguishing a fire, it is sufficient to push down the fire extinguishing operation member 2, and the fire extinguishing operation cam 15 rotates, the convex cam portion 35 pushes up the locking portion 55a of the locking member 55, and the lock of the third cam 14 is released. The support shaft 5 is rotated to the standby position by the return spring 51, returning to the state shown in FIG. 8a, and the main valve is also closed. During this return operation, the second cam 13 is pushed by the engagement claw 22 of the first cam 12 and returns together, but since the engagement pin 46 pushes the inclined surface 26c, it rotates in the return direction while escaping in the axial direction. Therefore, the engagement pin 46 slides on the inclined surface 26c and reaches the notch 26b, and the intermediate lever 42 hardly rotates. As described above, this fire extinguishing operation automatically moves the fire power adjustment member 3 to the maximum fire power position.

In addition, in the above-mentioned embodiment, each cam 11, 12
The shapes thereof are not limited to those shown in FIG. 3, and may be other shapes.

As is clear from the above description of the embodiments, in the present invention, the pilot lever is operated by the first and second cams, and in the latter half of the ignition operation, the third cam is locked to keep the main valve open. Since the pilot valve is held in the open state by the first cam, the pilot valve can be closed by a slight rotation of the first cam in the return direction, and the ignition operating member This makes it easier to clearly display the ignition status by reducing the return of the ignition, and by almost eliminating the movement of the intermediate lever during extinguishing operations, the space around the intermediate lever can be reduced and the device can be made more compact.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, in which Fig. 1 is a partially cutaway schematic plan view, Fig. 2 is a front view of the thermal power adjustment operation section, and Fig. 3 a to e are perspective views of each cam, respectively. Fig. 4 is a perspective view of the lock lever, Fig. 5 is a side view of the partition plate, Fig. 6 is a side view of the pilot valve operating mechanism, Fig. 7 is a side view of the main valve operating mechanism, and Figs. e and FIGS. 9a to 9c are explanatory views of the operation during the ignition operation. 1...Ignition operation member, 2...Extinguishing operation member, 6
... Gas cooker body, 7... Main valve open/close button, 8... Pilot valve open/close button, 12...
...first cam, 13 ... second cam, 14 ... third cam, 21, 26 ... cam part, 26c ... slope,
31...Lock groove, 43...Pilot lever,
44... Intermediate lever, 46... Engagement pin, 47...
...Drive pin, 48...Ignition lever, 51, 52,
53...Return spring, 55...Lock member, A...
Light extinguishing operation section.

Claims (1)

[Scope of Claims] 1. A first cam that is energized with a return force to the standby position and rotated by operation of the ignition operating member; A second cam is connected to the first cam so as to be rotatable at a certain angle with respect to the first cam, and the second cam is biased with a return force to the standby position, and like the first cam, the ignition operating member is A third cam that is rotated by operation and locked at the ignition position; an ignition lever that is pushed by the third cam to operate the main valve opening/closing button; and cam portions of the second cam and the first cam. an intermediate lever that has an engagement pin that is pushed by the user, is rotated by a second cam during the ignition operation, and is held in a rotated state by the first cam during the latter half of the ignition operation; It is equipped with a pilot lever that is pushed by the operator and rotated by the rotation of the intermediate lever to operate the pilot valve open/close button, and the third cam that is in the locked state upon completion of the ignition operation. When the first cam returns to the regulated position, the engagement pin of the intermediate lever is disengaged from the cam part of the first cam, and at the same time, the second cam also rotates slightly in the return direction and moves in the axial direction of the cam part of the second cam. The first cam is shaped so that the engagement pin of the intermediate lever rests on the inclined surface formed on the side facing the cam, and the intermediate lever rotates in the return direction to the position where the pilot valve is closed. and a cam portion of the second cam.