JPH0116937Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a locking device for an operating section of a gas appliance such as a gas stove for igniting or extinguishing a fire.

In order to prevent gas appliances from being ignited carelessly by children or other mischief, the ignition operating member of the fire extinguisher is locked so that it cannot be operated. A so-called child lock device generally has a complicated combination of cams and link mechanisms, and has a large number of parts and a complicated structure, which tends to increase costs and makes its operation unstable.

The present invention has focused on this point, and has been devised for the purpose of providing a locking device for an ignition operating member that has a simple structure, can be manufactured at low cost, and has reliable operation. An ignition operating member and an engaging piece are fixed to a shaft, a locking piece that can be engaged and detached from the engaging piece is provided protruding from a fire power adjusting operation part, and the fire power adjusting member is moved in the direction of the maximum fire power position in a state of extinguishing the fire. Accordingly, the lock piece of the fire power adjustment operation part is engaged with the engagement piece of the ignition/extinguishing operation part to prevent the ignition operation member from rotating in the direction of the ignition position.

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 a piano touch type ignition operation member and extinguishing operation member, 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 the gas flow rate regulator 9a, which rotates while meshing with a sector gear 10 connected to the thermal power adjustment member 3 to adjust the gas flow rate. A piezoelectric igniter (not shown) that is activated by rotation of the shaft is provided at the right end of the support shaft 5.

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. Reference numeral 12 denotes a main valve opening/closing cam made of a U-shaped metal fitting, which is disposed inside the ignition operating cam 1 and loosely inserted into the support shaft 5. These cams 1
1 and 12 are respective open/close buttons 7 of the gas cooker main body 6,
8, which rotates when the ignition operating member 1 is pushed down, and the pilot valve opens when the open/close button 8 is pushed through levers (not shown), and as shown in FIGS. 6a and 6b. moved cam 12
Opening/closing button 7 via ignition lever 13 pressed by
is pressed to open the main valve, and in the ignition state, the lock spring 12b attached to the upper plate 4a of the frame 4 engages with the lock groove 12a of the cam 12, and the ignition operating member 1 is pushed down. It is configured to be locked in position.

Reference numeral 14 denotes a fire extinguishing operation cam made of a U-shaped metal fitting, with an operating portion 2a integrally molded to constitute a part of the fire extinguishing operation member 2, and loosely inserted into the support shaft 5. As shown in FIG. 3, this fire extinguishing operation cam 14 is formed with a round hole 15 for rotatably attaching it to the support shaft 5, and a convex cam portion 16 for unlocking is formed on one side piece. A protrusion 17 for interlocking with the firepower adjustment operation part B is protruded from the lower part of the other side piece.

18 is fitted into the support shaft 5 and has one end attached to the frame 4.
This is a return spring whose other end is latched to the cam fitting 14 on the top plate (not shown) of the top plate (not shown) to apply a return force to the fire extinguishing operation member 2. Further, the cams 11 and 12 are also provided with return springs (not shown), and when the extinguishing operation member 2 is pushed, the convex cam portion 16 is released from the lock spring 12b.
is pushed up to unlock the second cam 12, and a return spring (not shown) releases the support shaft 5 and cams 11 and 1.
2 returns to the extinguishing position and extinguishing the fire.

The firepower adjustment operation section B includes a slider 21 that is slidably inserted into the guide shaft 5a, and an operation section 3 that is integrally molded with a guide plate 22 that is fixed to the slider 21.
Thermal power adjustment member 3 consisting of a, etc., and sector gear 1
0 and related interlocking mechanism C, etc., the forked part 10a of the sector gear 10 is connected to the guide plate 22 by a pin 23, and by moving the operating part 3a left and right along the guide shaft 5a, The gear cam 9 of the gas flow regulator 9a is driven via the sector gear 10, and moving the operating part 3a to the left reduces the firepower, and moving it to the right increases the firepower. There is.

On the opposite side of the gear part of the sector gear 10 is a pin 24.
The link 25 is connected to the frame 4 through the elongated hole 25a, and the other end of the link 25 is connected to the frame 4 by a pin 26.
An interlocking arm 27 supported by is connected via a pin 28. And the tip 2 of the interlocking arm 27
7a is introduced into the ignition extinguishing operation part A, and when the operation part 2a of the extinguishing operation member 2 is pushed down, the protrusion 17 of the extinguishing operation cam 14 pushes the tip 27a, 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 locking member 3 as shown in FIG.
1 is provided, and the tip 27 of the interlocking arm 27
A cutout portion 31a is formed into which portion a engages.

This locking member 31 is urged upward by a spring (not shown), and is kept horizontal in the extinguished state as shown in FIG. 6a, but in the ignited state when the ignition operating member 1 is depressed Then, as shown in FIG. 6b, since the ignition lever 13 is pressed down, the tip 27a of the interlocking arm 27 is in the notch 31.
a, and in the extinguished state, the tip 27a engages with the notch 31a, restricting the rotation of the interlocking arm 27, and making it impossible to move the firepower adjustment member 3 to the left.

33 is a partition plate that constitutes a part of the frame 4;
It is located between the ignition/extinguishing operation part A and the fire power adjustment operation part B, and supports the end of the penetrating support shaft 5, and as shown in FIG.
penetrates through. Further, a locking piece 34 is provided on the guide plate 22 of the firepower adjusting member 3 to protrude in the direction of the partition plate 33, and an insertion hole 35 is bored in the partition plate 33 corresponding to this. Furthermore, an engagement piece 36 is fixed to the end of the support shaft 5, and the insertion hole 35 is opened and closed according to the rotation of the support shaft 5, as shown by the chain line in FIG. The locking piece 34 can be inserted into the insertion hole 35 only at that time.

As described above, in the extinguishing state, the fire power adjustment member 3 is always at the maximum fire power position due to the operation of the interlocking mechanism C constituted by the interlocking arm 27, the link 25, etc. When engaged, it cannot move toward the minimum firepower position, so ignition is always performed at the maximum firepower state. Also, when the fire power adjustment member 3 is moved to the right in the extinguished state, the lock piece 34 is inserted into the insertion hole 35,
Even if an attempt is made to rotate the support shaft 5, the hook portion 36a of the engagement piece 36 will get caught on the lock piece 34, and the ignition operating member 1 will be locked and cannot be pushed down. This will prevent things like this from happening. In addition, in the ignition state, the lock member 31 is pushed down by the ignition lever 13, so the interlocking arm 27 is pushed down by the lock member 3.
1, the firepower can be adjusted freely.

The thermal power adjustment operation section B is provided with a moderation mechanism D for positioning the thermal power adjusting member 3 and the like. That is, as shown in FIG. 2, a moderation ball 39 is provided at the upper end of the slider 21 and biased upward by a spring 40, and the upper plate 4a of the frame 4 covering the firepower adjustment operation part B corresponds to this. Cutouts 41, 42 and 43 are provided for moderation. Notch 4
Reference numerals 1 and 42 are formed with holes or appropriate recesses, and the notch 41 is used to control the moderation ball 39 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 42 is provided at a position where the moderation ball 39 engages when the fire extinguishing operation member 2 is moved further to the right to lock the ignition operation member 1. The notch 43 is formed by providing an upwardly inclined piece 43a at a position where the moderation ball 39 engages while the fire power adjusting member 3 is being moved to the minimum fire power position. This notch 43 is to prevent the fire from extinguishing or abnormal combustion if the fire power is suddenly lowered. The shape may be such that there is almost no resistance when increasing the firepower, and other shapes may also be used.

In addition, although the above-mentioned embodiment shows an example using a piano touch type ignition operation member, a fire extinguishing operation member, and a sliding type fire power adjustment member, a rotary type can also be used as each member.

As is clear from the description of the embodiments above, the present invention is provided with an engaging piece that rotates together with the ignition operating member, and a locking piece of the fire power adjustment operation part that engages with this engaging piece, and the locking piece is engaged with the engaging piece. The ignition operating member is locked so that the ignition operation cannot be performed by engaging the ignition member, and the relatively simple structure makes it possible to reliably perform the so-called child lock in the extinguished state. .

[Brief explanation of the drawing]

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 firepower adjustment operation section, Fig. 3 is a perspective view of the fire extinguishing operation cam, and Fig. 4
The figure is a perspective view of the lock member, FIG. 5 is a side view of the partition plate, and FIGS. 6a and 6b are explanatory views of the operation of the ignition lever during extinguishing and ignition. 1...Ignition operation member, 2...Extinguishing operation member, 3
... Fire power adjustment member, 5 ... Support shaft, 34 ... Lock piece, 36 ... Engagement piece, A ... Point extinguishing operation section, B
...Firepower adjustment operation section.

Claims (1)

[Scope of utility model registration request] An ignition operation member and an engagement piece are fixed to a support shaft provided on the ignition/extinguishing operation part, and a lock piece that can be engaged with and detached from the engagement piece is provided protruding from the firepower adjustment operation part, so that the firepower adjustment member can be adjusted in the extinguishing state. By moving the firepower adjustment member in the direction of the maximum firepower position, the lock piece of the firepower adjustment operation part is engaged with the engagement piece of the ignition extinguishing operation part, thereby preventing rotation of the ignition operation member in the direction of the ignition position. A locking device for the ignition operating member of gas appliances.