JPS594224Y2 - Switching position confirmation device for gas sticks - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a switching position confirmation device for a gas cock that can be switched in multiple stages.

In a gas cock of a gas combustor, the firepower of the gas is divided into multiple stages, for example, two stages of high heat and low heat.
Its rotation angle range from fully closed to fully open (usually 90° to 10°
The firepower switching position is set within 0°), the gas cock is turned once to the metal amount position, ignited to make a strong fire, and then the knob is turned back (squeezing the gas cock) to reduce the heat to low.

On the other hand, in order to confirm the switching position of the heating power, a switching position confirmation device such as a click stop device is adopted, and the switching position can be confirmed using the user's touch and sound sense.

However, in such a gas combustor, there is an inconvenience that the click stop device operates during the rotation process of the knob from fully closed to fully open (ignition), causing a misunderstanding to the user.

This inconvenience is caused by devices such as double-sided roasters that are equipped with an upper heat and a lower heat, and which are used by switching these firepowers into three or more levels, such as high heat for the upper and lower heat, low heat for the upper and lower heat,
The same problem applies to products that can be used for either high heat or low heat for the upper and lower parts of the same size, and especially for products that can be switched to three or more stages. It is not as easy to set up as a switching position confirmation device.

This is because if you try to use a switching position confirmation device similar to the conventional one for a gas cock that can switch in three stages, you will have to set two or more switching positions within a rotation angle range of 90° to 100° from fully closed to fully open. Must.

For example, in the case where the firepower can be switched in three stages, 90
There must be two switching positions within the rotation angle range of ~100°, so the mutual spacing between the switching positions should be approximately 30°, but if the play of the gas cock operating shaft is taken into account, the mutual spacing between the switching positions should be set at approximately 30°. It is almost impossible to switch the gas passage of the gas cock at about 30 degrees.

This is of course possible if the gas cock is made larger, but
There are limits both in terms of space and economics.

For this reason, in a roaster that can switch the thermal power in three stages,
One switching position must be set within the rotation angle range of 90' to 100° from fully closed to fully open, and another switching position must be set outside of the rotation angle range, which eliminates the need for conventional click stop devices. A switching position confirmation device similar to the above cannot be adopted.

The present invention was developed based on the above-mentioned circumstances, and its main purpose is to provide a confirmation device that can accurately confirm the switching of the gas cock in a gas combustor that can switch the thermal power in two or more stages.

In order to achieve this objective, the gas cock switching position confirmation device of the present invention is assembled on the operating shaft of a gas cock that can be switched in multiple stages with a half-open state between a fully closed state and a fully open state. When the operating shaft is rotated by a predetermined amount to rotate the gas cock from a fully closed state to a half-open state, and when the operating shaft is reversely rotated by a predetermined angle to reversely rotate the gas cock from a fully open state to a half-open state, a support plate that is removably engaged and rotates integrally with the support plate; and a plurality of spherical bodies that are assembled on one side of the support plate on the operating shaft and rotate integrally therewith. a rotating holding plate that holds the spherical bodies at a predetermined layer interval; and a rotating holding plate arranged on one side of the rotating holding plate and elastically abutting on each of the spherical bodies to press the spherical bodies toward the support plate. a plurality of plate springs arranged at a predetermined layer interval on the plate spring, one of which faces one of the spherical bodies when the operating shaft is rotated by a predetermined angle; a plurality of retaining holes that can be engaged with and detached from each of the spherical bodies, the other of which is arranged so as to face the other one of the spherical bodies when the gas cock is rotated until the gas cock is fully open; ,
an engagement protrusion provided on the rotation holding plate side of the leaf spring;
It is provided on the peripheral edge of the support plate to protrude toward the leaf spring, and while the operating shaft rotates by a predetermined angle, it engages with the engagement protrusion of the leaf spring to restrict the pressing of the leaf spring against each of the spherical bodies. The gas cock switching position confirmation device, which is composed of a locking piece, has a unique structure.

As a result, in the present invention, when the operating shaft is rotated when the gas cock is in the fully closed state, the locking piece and the engaging protrusion are engaged until the rotation angle of the operating shaft exceeds a predetermined angle. The pressure of the spring on each spherical body is regulated.

Therefore, even when the operating shaft rotates by a predetermined angle and one of the spherical bodies faces the retaining hole of the leaf spring, it does not engage, and further rotation of the operating shaft causes the spherical body to pass through the retaining hole.

Therefore, during this time, the operator does not feel rotational resistance due to engagement between the spherical body and the engagement hole.

Furthermore, when the operating shaft is further rotated beyond a predetermined angle, the support plate engages with the operating shaft and rotates integrally with it, and the engagement between the locking piece and the engagement protrusion is released, and the plate The spring presses each spherical body, so that each spherical body and each retaining hole can be engaged and disengaged.

Therefore, when the operating shaft is rotated until the gas cock is fully open, the other one of the spherical bodies and the other one of the retaining holes face each other and engage with each other.

Therefore, the operator can feel rotational resistance due to the loose engagement and can confirm whether the gas cock is fully open.

On the other hand, when the operating shaft is reversely rotated from this state, the support plate is not engaged with the operating shaft and does not rotate while the operating shaft rotates by a predetermined angle. As mentioned above, the two are in a disconnected state without passing through.

For this reason, when the operating shaft is reversely rotated so that the gas cock is in a half-open state, one of the spherical bodies that had passed through it before engages with one of the engagement holes.

Therefore, the operator can feel rotational resistance due to the loose engagement and can confirm that the gas cock is in a half-open state.

In this way, in the present invention, a half-open position is provided between the fully closed state and the fully open state of the gas cock, and the spherical body is inserted into the retaining hole in the half-open position when the gas cock is operated from fully closed to fully open. At the same time, the spherical body and the retaining hole are engaged with each other in the fully open position so that the fully open state can be confirmed. The body and the retaining hole are engaged with each other so that the half-open state can be confirmed.

Therefore, according to the present invention, it is possible to ignite the gas cock in the fully open state without mistaking the half-open state of the gas cock as the fully open state during ignition operation, so there is no risk of ignition errors.
Also, after ignition, it is possible to accurately confirm whether the gas cock is half-open.

Hereinafter, the present invention will be explained based on the drawings. Fig. 1 schematically shows a three-stage switching type gas cock to which a switching position confirmation device (referred to as a muntin confirmation device) according to the present invention is attached.

This gas cock is for a roaster equipped with an upper fire and a lower fire, and the cock storage body 10 has a first passage 12 that connects a gas governor 20 from a main passage 11 to an upper fire burner, and a second passage 13 consisting of a passage 13a leading to the closure 30 and a passage 13b leading from the federation 13a to the top burner through a vertical groove 33 (described later) of the closure 30;
A third passage 14 communicating from the main passage 11 to the lower burner via the gas governor 20, and a second passage 13 (7) passage 13
A fourth passage 15 is provided which connects a circular arc groove 34 (described later) of the closure 30 from a to the lower burner.

On the other hand, as shown in FIGS. 1 to 3, the closure 30 has an inner hole 31 that communicates with the main passage 11, a fan-shaped hole 32 that communicates with the inner hole 31 and can communicate with the gas inflow hole 16, and a closed A vertical groove 33 is provided on the outer periphery of the closure member 30 in the longitudinal direction and is capable of disconnecting communication between the passages 13a and 13b of the second passage 13; The fourth passage 15 is provided with an arcuate groove 34 capable of disconnecting communication between the fourth passage 15 and the fourth passage 15.

As a result, in the gas cock, when the rotation angle of the rotary operation shaft of the closure 30 is 0 (a
), the gas inflow hole 16 and the main passage 11 are blocked, and the closure 30 is in a fully open state.

When the operating shaft is rotated by 50 degrees (see b in FIGS. 2 and 3; hereinafter, "rotation" simply refers to rotation in the counterclockwise direction), the sector-shaped hole 32 of the closure 30 opens the gas inflow hole. 16 and the main passage 11 are in communication, and gas is supplied to the upper burner through the first passage 12 and to the lower burner through the third passage 14 (both upper and lower burners).

Furthermore, when the operating shaft is rotated by 100 degrees (see C in FIGS. 2 and 3), communication between the gas inflow hole 16 and the main passage 11 is maintained, and the vertical groove 3 of the closure 30 This releases the blockage between the passages 13a and 13b of the second passage 13, and communicates between the passage 13a of the second passage 13 and the fourth passage 15 through the circular arc groove 34 of the closure member 30.

As a result, gas is supplied to the upper burner through the first passage 12 and the second passage 13, and gas is supplied to the lower burner through the third passage 14 and the fourth passage 15 (both upper and lower burners).

Furthermore, when the operating shaft is rotated by 145 degrees (see d in FIGS. 2 and 3), the gas inflow hole 16 and the main passage 11 communicate with each other, and the passage 13a of the second passage 13 and the fourth passage 15 is maintained, and only passages 13a and 13b of the second passage 13 are blocked.

As a result, gas is supplied to the upper burner only through the first passage 12, and gas is supplied to the lower burner through the third passage 14 and the fourth passage 15 (low upper flame, high lower flame).

In addition, in this gas cock, the operating shaft is configured to be rotatable by pushing and holding the operating shaft at the start of operation, and by rotating the operating shaft at the initial stage of operation by 100 degrees (Fig. 2). , see C in Figure 3...
When both the upper and lower burners are on high fire), both the upper and lower burners are ignited and the rotation of the operating shaft is stopped, and by releasing the push on the operating shaft from this state, the subsequent rotation of the operating shaft in the forward and reverse directions is prevented. configured to be possible.

In other words, in this gas cock, when the operating shaft is pushed and rotated 100 degrees from the fully closed state, both the upper and lower burners are ignited, causing both the upper and lower burners to become a strong flame (fully open state), and then the operating shaft is rotated from this position. When rotated by 45 degrees, the upper burner is at a low flame and the lower burner is kept at a high flame (first half-open state), and is rotated 95 degrees from this position or 50 degrees from the above position (hereinafter, "reverse rotation" means clockwise rotation). ), both the upper and lower burners will have a low flame (second half-open state).

4 to 6 show an example of the confirmation device according to the present invention.

This confirmation device 50 includes a disc-shaped support plate 51 that is inserted through and assembled onto an operating shaft 40 with an angular cross section that can rotate the closure 30, and a disc-shaped support plate 51 that is inserted through and assembled onto the operating shaft 40. a disc-shaped rotation holding plate 52; a plate spring 53 fixed to the front mounting portion 17 of the cock body 10 and inserted through the operating shaft 40; and a support plate that is fitted and held in the rotation holding plate 52. 51 and three balls 54 a to 54 C located between the leaf springs 53 .

The support plate 51 is provided with a drum-shaped engagement hole 511 in the center thereof through which the operating shaft 40 passes and which can be engaged by rotating the operating shaft 40 by 50 degrees, and is assembled with the operating shaft 40 passing through it. The plate spring 53 is brought into contact with the mounting portion 17 of the cock body 10 by the pressing force of a central ridgeline 532, which will be described later.

As a result, the support plate 51 does not rotate while the operating shaft 40 rotates 50' from the fully closed angle position of the closing member 30, but rotates integrally with the operating shaft 40 during the subsequent rotation.

Further, a locking piece 5 protruding forward is provided on the outer peripheral edge of the support plate 51.
12 are provided.

On the other hand, a through hole 521 having the same cross-sectional shape as the operating shaft 40 is provided in the center of the rotation holding plate 52. It is assembled and located between the support plate 51 and the leaf spring 53.

Further, the rotation holding plate 52 is provided with three ball holding holes 522 to 524 on the same circumference, and three balls 54 a to 54 C are loosely fitted into each of the ball holding holes 522 to 524 . ing.

Each of the ball holding holes 522 to 524 has the following positional relationship with respect to the base line 1 of the rotation holding plate 52 (a perpendicular line passing through the center of the rotation holding plate 52) when the gas cock is fully closed.

The first ball holding hole 522 is 80° counterclockwise to the left with respect to the base line 1, the second ball holding hole 523 is 50' clockwise to the right, and the third ball holding hole 524 is 14' clockwise to the right.
They are each displaced by 5 degrees.

The leaf spring 53 has a substantially M-shaped cross section with its central portion bent inward over the top and bottom to protrude, and a through hole 531 through which the operating shaft 40 rotatably passes is provided in the center. , is fixed to the front part of the mounting part 17 while passing through the operating shaft 40.

Further, the central ridgeline 532 of the leaf spring 53 functions as an engaging protrusion that removably engages with the locking piece 512, and on the central ridgeline 532, each Two engagement holes 5 into which balls 54a to 54C can be engaged and detached
33°534 is provided.

When the closing member 30 is fully closed, the leaf spring 53 touches the locking piece 5 of the support plate 51 at its center ridgeline 532, as shown in FIG.
As shown in FIG. 5, when the operation shaft 40 rotates, the support plate 51 rotates and the leaf spring 5
3 and the locking piece 512 is released, each ball 54
a~54 Press C inward.

Next, the operation of the confirmation device 50 configured as described above will be explained based on FIGS. 2, 3, and 7.

State a in each of these figures indicates the fully closed state of the gas cock, and in order to ignite the burner, the operating shaft 40 is pushed and rotated 100 degrees to bring it into state C.

In this C state, as already detailed, both the upper and lower burners are in a high flame state.

During this time, in the confirmation device 50, the operation shaft 40
The rotation of the rotation holding plate 52 rotates integrally with the rotation of the support plate 51, but the support plate 51 is rotated by the engagement hole 511 of the support plate 51 so that the operation shaft 4 is rotated.
Only when the rotation of 0 exceeds 50 degrees does it rotate integrally with this.

Therefore, when the operating shaft 40 rotates 50 degrees in the direction of a-)C (the state shown in FIG. 7), the second ball 54b is rotated by the leaf spring 5.
However, since the pressing force of the plate spring 53 is released by the action of the locking piece 512 (
(See Figure 4) It passes through the first engagement hole 533 without fitting into it.

On the other hand, when the operating shaft 40 rotates 100 degrees, the locking piece 512 is no longer engaged with the center ridge line 532 and the center twill line 5
32 is restored and each ball 54 a to 5 is moved by the leaf spring 53.
4 Since a pressing force is generated on C, the second plate spring 53
The first ball 54a that has reached the engagement hole 534 is fitted into and engaged with the second engagement hole 534 (state shown in FIG. 7C).

As a result, rotational resistance is generated in the operating shaft 40 during the engagement, and the rotation holding plate 52 and the twill wire 532 of the leaf spring 53 contact each other via the first ball 54a, resulting in a contact noise. Completion of ignition is confirmed by the rotational resistance and the abutting sound, and then the operation shaft 40 is released.

Next, when it is desired to switch the upper burner to low heat and the lower burner to high heat, the operating shaft 40 is further rotated by 45 degrees from state C to enter state d (the operating shaft 40 is rotated 145 degrees from state a).
° rotation).

As a result, in the confirmation device 50, the rotation holding plate 52
The third ball 54 C is the first support hole 53 of the leaf spring 53.
3 and fits into and engages the first engagement hole 533 (7th
Figure d).

As a result, rotational resistance is generated in the operating shaft 40 and a contact noise is generated.

Furthermore, when it is desired to switch both the upper and lower burners to low heat, the operating shaft 40 is rotated 50 degrees in the opposite direction from the C state and directly enters the b' state, or 95 degrees reversely rotated from the d state to go through the C' state shown in Fig. 7. to state b' (the operating shaft 40 is moved from state a to
° rotation).

As a result, in the confirmation device 50, the rotation holding plate 52
The second ball 54b is the first engagement hole 533 of the leaf spring 53.
reach.

During this time, the support plate 51 does not rotate until the operating shaft 40 is rotated 50 degrees in the opposite direction due to the retaining hole 511, and then rotates integrally with this, so the locking piece 512 remains in the same position during this time and the base line 1 is In state b', the leaf spring 53 and the locking piece 512 do not engage with each other, and each ball 54 a to 5
4 Pressing C.

As a result, in the b' state, the second ball 54b is
Fits into the engagement hole 533 and engages, thereby causing the operation shaft 4
0, rotational resistance occurs and contact noise occurs.

Note that when it is desired to bring the gas cock into the fully closed state (state a), the operating shaft 40 is rotated clockwise from each state until it stops rotating.

During this period, the rotary holding plate 52 rotates integrally with the rotation of the operating shaft 40, and the support plate 51 rotates integrally with the rotation of the operating shaft 40 with a delay of 50', and returns to its original position.

In this way, in the gas cock, the confirmation device 50
The switching position of the gas cock can be accurately confirmed by the rotational resistance of the operating shaft 40 and the contact sound.

Note that it goes without saying that the confirmation device 50 may be modified to generate only rotational resistance.

In addition, in this embodiment, a gas combustor that can switch the thermal power in three stages has been described as an example, but the present invention omits the third ball 54 C1 third ball holding hole 524, etc., and is completely closed. It goes without saying that the present invention can be applied to a gas combustor in which the thermal power can be switched in two stages, with a half-open state provided only between the fully open state and the fully open state.

[Brief explanation of the drawing]

Figure 1 is a partial longitudinal sectional view of a gas cock that can be switched in three stages.
Fig. 2 is a schematic diagram showing each operating state of the gas cock along line II-II in Fig. 1, and Fig. 3 is a schematic diagram showing the operating states of the gas cock along line II-II in Fig.
A schematic diagram corresponding to FIG. 2 along the line, FIGS. 4 and 5 are top views showing an example of the verification device according to the present invention in an installed state, FIG. 6 is an exploded perspective view of the verification device, and FIG. 7 3 is a schematic diagram corresponding to FIGS. 2 and 3 showing various operating states of the confirmation device. FIG. Explanation of symbols, 10... Cook body, 20...
...gas governor, 30...closed, 40...
...Operation axis, 50... Confirmation device, 51...
...Support plate, 511...Trumpet-shaped engagement hole, 512
...... Locking piece, 52 ... Rotation holding plate, 5
22-524...Ball holding hole, 53...
...Plate spring, 532...Central ridgeline, 533°534...Engagement hole, 54 a to 54 C...
···ball.

Claims (1)

[Scope of utility model registration request] It is assembled on the operating shaft of a gas cock that can be switched to multiple stages with a half-open state between a fully closed state and a fully open state, and the operating shaft is rotated by a predetermined angle to rotate the gas cock from a fully closed state to a half open state. a support plate that removably engages with the operating shaft and rotates integrally with the operating shaft when the operating shaft is rotated in a predetermined angle and the gas cock is reversely rotated from a fully open state to a half-open state; and a rotation holding plate which is assembled on one side of the support plate on the operation shaft and rotates integrally therewith and holds a plurality of spherical bodies at predetermined layer intervals; a leaf spring disposed on one side of the holding plate and resiliently abutting on each of the spherical bodies to press each of the spherical bodies towards the support plate; When the operating shaft is rotated by a predetermined angle, one of the spherical bodies faces one of the spherical bodies, and when the operating shaft is rotated beyond a predetermined angle until the gas cock is fully open, the other one faces one of the spherical bodies. a plurality of engagement holes arranged to face the other one of the spherical bodies and capable of engaging and disengaging with each of the spherical bodies; and an engagement protrusion provided on the rotary holding plate side of the leaf spring. and a portion protruding from the peripheral edge of the support plate towards the leaf spring, and while the operating shaft rotates by a predetermined angle, engages with the engagement protrusion of the leaf spring and presses the leaf spring against each of the spherical bodies. A gas cock switching position confirmation device consisting of a locking piece that controls the gas cock.