JPH033809Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to an operating device connected to a gas on-off valve for supplying/cutting gas and adjusting the supply flow rate in a heating cooker using combustion gas.

[Technical background]

In a heating cooker that uses combustion gas, the operation procedure for the operating mechanism that supplies/cuts the combustion gas and adjusts the supply flow rate is to simply rotate the operating knob and change the supply flow rate from the closed state depending on the degree of rotation. The rotation system gradually increases the rotational speed until it is fully open, and now, with the primary goal of preventing danger, we have moved to a half-lock system in which the operating knob is pushed in and held in that position before rotating. The above-mentioned safety operation is being shifted to a fully locking type with an even higher degree of safety.

This complete lock type is a mechanism in which the operating knob cannot be rotated unless the lock is released.

Therefore, the operation knob cannot be used unless the lock release procedure is performed before turning the operation knob.

As a type of completely locking type, when the gas is closed, the top surface of the operation knob is stored in a state that is flush with the operation panel or close to it, and rotation operation is impossible. The lock is released only by further pressing the top surface of the operating knob, and
At the same time, there are devices and mechanisms that have a grippable size suitable for rotational operation that protrudes from the front surface of the operation panel and are configured to be rotatable.

This invention simplifies the structure of the related mechanisms from lock release to rotation operation in the above-mentioned mechanism, and has a structure that increases operational safety.

[Conventional technology]

It is an operating device connected to the on-off valve that controls the gas supply/cutoff and the supply flow rate in a heating cooker that uses combustible gas.The operating knob, which is locked so that it cannot be rotated, is released by pushing in, and the release operation causes the knob to protrude. A device in which the operating knob is rotatable is disclosed in Japanese Utility Model Application No. 63-69904 and Japanese Utility Model Publication No. 63-80385.

(Problem to be solved by the invention) The operating mechanism of the above-mentioned form has a lock function and a rotation function within a small volume, and its operation also includes axial movement and rotation around the axis. In order to enable movement, the movement becomes more complex, the number of parts increases, and the configuration of individual components also tends to become more complex.As a result, the failure rate also increases with the configuration. In contrast, this invention simplifies the configuration and has only one set of operating means, so that if anyone can follow the simple operating procedure, the effect based on the configuration can be maintained for a long time. The purpose of this is to make it possible to obtain a set effect semi-permanently without any change phenomenon that would cause any inconvenience to occur over time.

[Means for solving the problem] This invention is an operating means connected to a gas on-off valve that controls gas supply/cutoff and adjustment of the supply flow rate in a heating cooker that uses combustion gas, and is locked so as not to rotate. In an operating mechanism in which the operating knob is released by pushing in and the operating knob protruding from the front of the operating panel becomes freely rotatable when the operating knob is pushed in, rotational motion is transmitted by inserting and engaging the valve stem of the gas on-off valve. A lock piece is formed with a valve stem insertion hole and a heart-shaped circulating feed pawl locking groove, and the lock piece is attached to the axial center of the operation piece attached to the rear surface of the operation knob so that the lock piece can be slid in the axial direction. In addition to being able to freely transmit rotational motion, a coil spring that acts as an extension is inserted and engaged, and the locking portion at the tip of the lock pin fixed to the operation piece is connected to the circulating movement pawl engagement. The operating piece is engaged with the stop groove to connect the operating piece and the locking piece, and furthermore, a sliding protrusion is formed to protrude outward from the rear end of the outer periphery of the operating piece and is located on the outside of the operating piece. The guide member is provided with a straight guide part that can guide the sliding protrusion so as to be parallel to the axis of the operating piece, and is provided with a stop wall that the sliding protrusion abuts at a tip position of the straight guide part, and has this stop wall. A circular guide part is provided on a circular line between the axis of the operating piece and the center circle, and the circular guide part starts at the position and ends at a position at a set angle from the starting end, and the straight guide part is connected to the starting end. The guide member is a part of the gas on-off valve and is configured so that the engaging sliding protrusion can prevent any movement other than back and forth movement in the straight guide part and circular movement in the circular guide part. It is made so that it can be fixed to.

[Effect]

In the device of this invention, when the combustion gas is closed, the top of the operation knob is in a state of being approximately flush with the operation panel, and in this state, the lock pin is inserted into the heart-shaped circulating movement pawl locking groove provided in the lock piece. The operating knob is held stationary at the above position by engaging with a locking portion formed at the rear end of the operating knob.

When using the heating cooker, the operation can be started by applying a slight pushing motion to the top of the retracted operating knob, so that the locking portion at the tip of the lock pin moves from the locking point in the circulating feed pawl locking groove. As a result of this action, the lock piece exhibits a retraction phenomenon due to the elasticity of the internal coil spring, but the lock piece is in a state of union with the valve stem of the gas on-off valve and remains immovable. As a result, the operating piece, which is in a free state, moves forward due to the reaction force of the spring. In other words, since the operating piece is fixed to the operating knob, the operating knob moves forward.

At this time, the sliding protrusion provided on the operating piece is guided by the straight guide part of the guide member fixed to the valve body of the gas on-off valve, so the direction of its movement is limited to only the forward and backward movement. the control knob moves forward.
The rotational action is then blocked until this forward action is completed. The sliding protrusion thus slid comes into contact with the starting end side of the circular guide part, that is, the stop wall forming the end of the straight guide part, and the forward movement of the operating knob is stopped and completed. At this time, the possible movement directions of the sliding protrusion include return movement to the straight guide part that has slid forward and rotation movement to the circular guide part formed in communication with the straight guide part. When the purpose is to open the gas on-off valve, the operating knob is rotated, and the rotational movement is stopped at the end. These actions are such that rotational motion can be transmitted from the operating piece via the lock piece to the valve stem of the gas on-off valve engaged with the lock piece.

Further, even if a pressing action is applied to the operating knob by mistake while the heating cooker is in use, the sliding protrusion is located within the circular guide portion, so that the pressing action is blocked and the non-acting state is maintained.

In addition, when performing a fire extinguishing action under the usage conditions described above, if the sliding protrusion that is in contact with the terminal end is rotated toward the starting end, the rotational movement will rotate the valve stem via the lock piece. When the sliding protrusion reaches the starting end of the circular guide portion, the gas on-off valve is closed. Therefore, when the use of the heating cooker is completed, the operation knob is pushed in against the elasticity of the coil spring. By this operation, the sliding protrusion enters the straight guide part from the communication part at the starting end of the circular guide part, and the pushing operation is enabled until the rear surface of the operating knob comes into contact with the front surface of the guide member. on the other hand,
At that point, the locking portion of the lock pin passes through the innermost end of the circulating movement pawl locking groove, and when the operation knob reaches the above-mentioned retraction limit position, the locking portion of the lock pin is stopped by cutting off the pushing operation. The recirculating pawl reaches the locking position due to the pawl effect of the locking groove and locks the pushed-in state.

〔Example〕

Next, an embodiment of this invention will be described with reference to the drawings. It is an operating means connected to a gas on-off valve 2 that controls gas supply/cutoff and adjustment of the supply flow rate in the heating cooker 1 that uses combustion gas, and is non-rotatable. In the operating mechanism, the operating knob 3 that is locked by a push-in operation is released, and the operating knob 3 protruding from the front surface of the operating panel 16 becomes rotatable by the releasing operation. A lock piece 5 is formed, which has a valve stem insertion hole 7 that can be inserted and engaged to transmit rotational motion, and a heart-shaped circulation pawl locking groove 9 with a locking point 9a at the end thereof, and an operation knob. 3
A sliding protrusion 5a formed on the outer periphery of the locking piece 5 is fitted into a concave groove 4a provided at the axial center of the operating piece 4 attached to the rear surface so that it can freely slide in the axial direction. In addition, a spline effect capable of transmitting rotational motion is obtained, and a coil spring 10 that acts to expand is inserted and engaged, and the locking portion 8a at the tip of the lock pin 8 fixed to the operating piece 4 is inserted and engaged. A sliding protrusion 11 is engaged with the circulating pawl locking groove 9 to connect the operating piece 4 and the locking piece 5, and furthermore, a sliding protrusion 11 extends outward from the rear end of the outer periphery of the operating piece 4.
A guide member 15 is formed in a protruding manner and positioned on the outside of the operation piece 4. A straight guide part 12 that can guide the sliding protrusion 11 is formed parallel to the axis of the operation piece 4. A stop wall 18 is provided at which the sliding protrusion 11 comes into contact, and this stop wall 1
8 as the starting end 19, and the starting end 1
A circular guide portion 13 closed with a terminal end 14 at a position through an angle set from 9 is provided on the axis of the operating piece 4 and a circular line between the center circle, and the starting end 19 and the tip of the straight guide portion 12 are connected. The sliding protrusions 11 that communicate with each other and engage with each other move back and forth in the straight guide portion 12.
In the circular guide portion 13, a guide member 15 configured to prevent movements other than circular motion can be fixed to a part of the gas on-off valve 2.

As described above, this invention provides the sliding protrusion 11 on the operating piece 4 that moves together with the operating knob 3, and on the other hand,
The sliding protrusion 11 is formed to engage with the straight guide part 12 and the circular guide part 13 of the gas opening/closing valve, that is, the guide member 15 fixed to the fixed base side.

That is, at the time when the sliding protrusion 11 is engaged with the straight guide part 12 of the guide member 15, it simply moves in the axial direction passing through the rotation axis of the operating knob 3 according to the set shape of the straight guide part 12, that is, in the front and back directions. Only reciprocating movement in the direction is permitted, and the distance of movement in the forward and backward movement is from the position where the entire operation knob 3 is stored to the operation panel 16.
The protruding distance is such that it protrudes from the front surface and can be grasped and rotated.

The position and state of the sliding protrusion 11 when the operation knob 3 is fully protruded and can be rotated is the front end of the straight guide portion 12, that is, the installation position of the stop wall 18, that is, the sliding protrusion 11 is The front surface of the movable protrusion 11 abuts against the stop wall 18 to maintain the stopped state. This stopped state restricts the maximum position of the protrusion distance of the operating knob 3 attached via the operating piece 4.

When the front surfaces of these sliding protrusions 11 come into contact with the stop wall 18, the stopped position is the circular guide portion 1.
It is also the starting point 19 position in 3.

When the operation knob 3, which is stopped due to the maximum protrusion amount as described above, is rotatable, the rotation operation applied to the operation knob 3 causes the gas on-off valve 2 to open and supply gas. The flow rate can be adjusted arbitrarily.

The sliding protrusion 11 that moves in conjunction with the rotation of the operating knob 3 can freely move in a circular arc within the circular guide portion 13 from the starting end 19 to the terminal end 14.

The sliding protrusion 11 in the circular guide part 13 has its front and rear surfaces guided by the guide groove wall forming the circular guide part 13 and moves in an arc, and slides in the straight guide part 12. The contact and sliding movement occurs on a surface different from the upper and lower surfaces on which the protrusion 11 is guided.

In this way, once the sliding protrusion 11 of the operating piece 4 leaves the stop wall 18 of the straight guide part 12 at the circular guide part 13, an unintended pushing action is applied to the operating knob 3. Even if you are
Even if the sliding protrusion 11 is given a longitudinal movement within the circular guide portion 13, the sliding protrusion 11 is prevented from moving by the guide groove wall and does not move.

Further, when the sliding protrusion 11 is inside the straight guide portion 12, it exhibits a state in which circular motion is blocked and remains unmoved by this. The positions where these movement directions can be changed are the straight guide part 12 and the circular guide part 1.
3, that is, only at the communicating point, and when the sliding protrusion 11 is present at that point, the open/closed state of the gas on-off valve 2 relative to the valve stem 6 via the operating piece 4 and the locking piece 5 is as follows. Since this is the "close" action, this is the origin position for either the "ignition" or "extinguishing" operations for these operation knobs 3, so there is no need to worry about moving into an unexpected and dangerous state.

[Effect of idea]

As described above, in this invention, the sliding protrusion that is linked to the forward/backward movement and rotational movement of the operating knob is guided by the straight guide part and the circular guide part of the guide member on the fixed side, and the sliding protrusion is guided at the guided part. Since any movement other than the guiding action is completely prevented, it will not be affected even if unexpected unexpected phenomena occur, so it maintains a high level of safety in use, and also allows for easy settings in terms of operation. Any other operation will be rejected depending on the configuration, so the structure is designed so that illegal operations cannot be performed, thereby completely eliminating damage to component members and malfunctions due to these operational errors.

Furthermore, these guide members and sliding protrusions have a small number of parts and have a simple structure, eliminating complicated structures that are one of the causes of failures, resulting in improvements in terms of production, use, and performance maintenance. This has a great effect.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing a part of the front of the heating cooker;
Figure 2 is a sectional view of the operating knob when it is stored, Figure 3 is a sectional view when it is in operation, Figure 4 is an exploded perspective view, Figure 5 is a sectional view of the main parts when not in use, and Figure 6 is the main parts. FIG. 1...Heating cooker, 2...Gas on/off valve, 3...Operation knob, 4...Operation piece, 5...Lock piece, 6...Valve stem, 7
...valve stem insertion hole, 8...lock pin, 8a...locking part,
9... Circulating moving pawl locking groove, 10... Coil spring, 11... Sliding protrusion, 12... Straight guide portion, 13
... circular guide part, 14 ... terminal end, 15 ... guide member,
18...Stopping wall, 19...Starting point.

Claims (1)

[Scope of utility model registration request] An operation means connected to a gas on-off valve that controls the gas supply/cutoff and the supply flow rate in a heating cooker that uses combustion gas, and releases the operation knob that is locked so that it cannot be rotated by pressing the button. The operating mechanism has a rotatable operating knob that protrudes from the front of the operating panel, and has a valve stem insertion hole into which the valve stem of the gas on-off valve can be inserted and engaged to transmit rotational motion, and a heart-shaped circulation feed pawl. A lock piece having a locking groove is formed so that the lock piece can freely slide in the axial direction and transmit rotational motion to the axial center of the operation piece attached to the rear surface of the operation knob. At the same time, the operating piece and the locking piece are inserted and engaged by interposing an expanding coil spring, and the locking portion at the tip of the locking pin fixed to the operating piece is engaged with the circulation pawl locking groove to connect the operating piece and the locking piece. Further, a sliding protrusion is formed to protrude outward from the rear end of the outer periphery of the operating piece, and a guide member positioned outside the operating piece has a straight-shaped member that can guide the sliding protrusion. The guide part is formed to be parallel to the axis of the operating piece, and a stop wall is provided at the tip position of the guide part, which the sliding protrusion comes into contact with. A sliding protrusion is provided on a circular line between the axis of the operation piece and the central circle, and the starting end and the tip of the straight guide part communicate with each other and engage with each other. A heating cooker characterized in that a guide member configured to prevent movements other than back and forth movement in the straight guide part and circular movement in the circular guide part can be fixed to a part of the gas opening/closing valve. operating device.