JPH045861Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial field of application This invention relates to a cylinder setting safety device for a cassette stove that enables gas supply by loading a small gas cylinder and press-connecting it to a gas supply path. It is used when the gas cylinder can only be properly connected in an orientation in which the inner end of the gas outlet pipe opens upwardly at the top of the horizontally lying gas cylinder so that the gas can flow out.

2. Description of the Related Art A conventional safety device of this kind, for example, as shown in FIG. etc. are only provided.
The cylinder 2 has, for example, an orientation notch 2b on a part of the outer periphery of the tip flange 2a, into which the protrusion 3 fits,
This notch 2b can be connected to the connection port 1 when facing the protrusion 3 and fitting into it, and in other orientations, the flange 2a abuts against the protrusion 3 and the connection is hindered.

Problems to be Solved by the Invention In the conventional case, connecting and using a gas cylinder in an incorrect orientation is reliably prevented. However, the operator can only determine that the gas cylinder is oriented incorrectly and cannot be connected based on the fact that there is great resistance in the cylinder setting operation of the cylinder setting mechanism that presses and connects the gas cylinder to the connection port. As a result, the person's judgment may be incorrect or the person may notice it too late, and the cylinder setting operation may be forced. Even if the flange of the gas cylinder is deformed by forceful operation, the gas cylinder may be connected, resulting in raw gas that does not vaporize flowing out. Also, if the gas cylinder flange is made strong, it will avoid connecting the cylinder in the wrong direction.
The problem then arises that the weak part of the cylinder setting mechanism is damaged.

Means for Solving the Problems In order to solve the above-mentioned problems, this invention provides a cassette stove that has a cylinder setting mechanism that presses and connects a loaded gas cylinder to the cylinder connection port that connects the gas cylinder in the gas supply path and releases the pressure. In,
A cylinder setting prevention means is provided which prevents the cylinder setting mechanism from operating the cylinder in response to pressure connection of a gas cylinder in an incorrect orientation, and the cylinder setting mechanism is provided with a cylinder setting prevention means that prevents the cylinder setting mechanism from operating from the side of the operating section. The present invention is characterized in that a play portion that responds to excessive operating force is provided between the members or on the side of the cylinder set prevention means.

Function: If the cylinder setting mechanism is operated with the gas cylinder in an incorrect orientation, the cylinder setting prevention means responds to the movement of the gas cylinder at this time and prevents the cylinder setting mechanism from operating, so that the gas cylinder in the incorrect orientation is pressed into connection. This can be avoided.

Furthermore, even if the cylinder setting mechanism is forcibly operated and an excessive operating force is applied while the cylinder setting operation is blocked by the cylinder setting blocking means, the play portion responds to this and eliminates the excessive operating force. Therefore, it is possible to prevent a strong external force from acting on the gas cylinder or its connection port, and it is also possible to prevent the excessive operating force from acting on the cylinder setting mechanism or the cylinder setting prevention means.

Embodiment Example 1 (Figures 1 to 3) As shown in Figure 1, the cylinder connection port 1 is located at the protruding end of the gas supply path 5 that protrudes from the gas pressure regulator 4 toward the gas supply source. It is provided. An instrument pot 6 is connected to the gas pressure regulator 4, and a gas supply path 5 extends from the pot 6 to the gas burner, and has a nozzle 5a at the tip.

A cylinder setting lever 8 is pivotally supported 9 on a side plate 7 fixed to one side of the gas pressure regulator 4, and a cylinder pressing slide member 10 is connected to the lever 8 with a pin 11 to form a cylinder setting mechanism 12. The slide member 10 has a cylinder pressing piece 10a at its rear end, is slidably mounted on the bottom of the stove case (not shown) with its center part submerged under the bottom, and is mounted on the bent side plate 19a of the tip connection fitting 19. Fit the pin 11 into the arc-shaped cam hole 8a of the lever 8 and
The slide member 10 is slid back and forth by the rotation of the lever 8.

The slide member 10 is pressed against the pressing piece 1 by a spring 13.
At 0a, the gas cylinder 2 is biased to release the pressure connection to the cylinder connection port 1, and at the cylinder pressure connection position, the pin 11 engages with the recess 8b at one end of the cam hole 8a, thereby stabilizing the gas cylinder 2.

At the top of the cylinder connection port 1, a locking member 14 is provided as a cylinder connection orientation regulating means that responds to connection of the gas cylinder 2 in an incorrect orientation. The locking member 14 fits the pin 15 on the side plate 7 into the long hole 14a at the rear end, and connects the notch 14c behind the leading end passive part 14b on the connection port 1 to the colored resin indicator fixed to the front part of the gas pressure regulator 4. 16 holding grooves 1
By fitting into the groove guide protrusion 16b within the groove 6a, it is held so as to be slidable back and forth, and is urged to protrude forward of the cylinder connection port 1 by the spring 18 acting between it and the side plate 7. There is. A stopper 14b is bent at one side in the middle of the locking member 14. The stopper 14b is moved back and forth with respect to the cylinder press connection operation path from the cylinder press connection release position of the lever 8 (FIG. 1).

The locking member 14 is normally in a position where the passive portion 14b projects forward from the cylinder connection port 1 under the bias of the spring 18, and the stopper 14b is retracted from the cylinder press connection operation path of the lever 8. For this reason,
The lever 8 is not obstructed by the locking member 14,
Can be operated by cylinder press connection. This operation
In the figure, push down the operating part 8c of the lever 8,
This is done by rotating the lever 8 counterclockwise. When the lever 8 is rotated counterclockwise, the slide member 10 is moved through the pin 11 by the cam hole 8a.
towards the gas pressure regulator 4 side. As a result, the loaded gas cylinder 2 is moved to the slide member 10.
is pushed toward the connection port 1 side by the pressing piece 10a.

When the gas cylinder 2 is in the proper orientation, the notch 2b provided in the flange 2a of the gas cylinder 2
is opposed to the passive part 14b of the locking member 14,
Even if cylinder 2 is connected to connection port 1 by pressure,
The passive part 14b and the cutout part 2b fit into each other, and the passive part 14b is not subjected to any pressing force. For this reason,
The locking member 14 does not respond to the pressure connection of the cylinder 2,
Because it does not interfere with the cylinder press connection operation of lever 8,
The cylinder 2 is press-connected to the connection port 1.

If the gas cylinder 2 is to be press-connected in an incorrect orientation, the flange 2a will first abut against the passive part 14b of the locking member 14, and the locking member 14 will resist the spring 18 against the subsequent press-connection of the cylinder. respond,
The stopper 14d advances into the cylinder pressing connection operating path of the lever 8. This prevents the cylinder set lever 8 from further pressing and connecting the cylinder.

This prevention is achieved by a direct action on the cylinder setting mechanism 12, and the operating resistance is directly felt by the operator, and abnormal external force due to inoperability acts only on the sturdy operating lever, and the cylinder is connected in an incorrect orientation. Damage to various parts caused by excessive operation at that time is avoided.

Comparative Example 1 (Fig. 4) As described in the conventional example above, a case in which a protrusion 3 is provided around the connection port 1 to prevent connection of a cylinder 2 in an inappropriate orientation as a cylinder connection direction regulating means. An example is shown. The cylinder set lever 8 has an operating portion 8c and is pivoted to an operating side 8.
d and an operating side 8e having a cam hole 8a, one end of which is hingedly connected by a pin 21, and the other end of the divided part is elastically connected by a spring 22.

The spring 22 is activated by the lever 8 when the cylinder 2 is properly oriented, the notch 2b of the flange 2a and the protrusion 3 face each other, and the cylinder 2 is connected to the connection port 1 while the two are fitted together. The operation side 8d and operation side 8e of the cylinder 2 are maintained in an integrated state, and the cylinder 2 is connected.

On the other hand, if the cylinder 2 to be connected is in an incorrect orientation and the flange 2a comes into contact with the protrusion 3 and the connection is prevented, the spring 22 is stretched before the flange 2a deforms. The operation side 8e is not made to follow the movement of the operation side 8d of the lever 8, making connection of the cylinder 2 impossible, and damage to various parts due to excessive operation is avoided.

Comparative Example 2 (Fig. 5) The spring 22 of the first comparative example was installed in the cylinder setting mechanism 1.
An example of a case in which it is provided in another part of the slide member 10 is shown, and it is operated between the divided ends 10b and 10c of the slide member 10. The function of the spring 22 is similar to that of the first comparative example.

Comparative Example 3 (Fig. 6) In place of the spring 22 of the second comparative example, magnetic adsorption force is used, and the magnets 31, 32, or one of them is replaced with a magnetic material, and each division of the slide member 10 is It is attached to the ends 10b and 10c.

In this case, for cylinder 2 in the proper orientation,
Normal cylinder setting operation is achieved by adsorption between the magnets 31 and 32, or one of them, and the magnetic material, and if the cylinder 2 is oriented incorrectly, the adsorption will come off, making cylinder setting impossible and causing excessive operation. Avoid damage to various parts due to

If the magnets 31 and 32 are made of ferrite, etc., which lose their magnetic force at a certain temperature, their adsorption will come off when the temperature rises abnormally, automatically disconnecting the cylinder 2, and if the stove is continued to be used any further, the cylinder 2 will explode. Things like this can also be avoided.

Comparative Example 4 (Figures 7 and 8) Operation side 8d and operation side 8 of cylinder set lever 8
e are hinge-connected by the pivot shaft 9 of the lever 8, and a concave-convex engaging part 41 between the operating side 8d and the actuating side 8e is formed between the mutual contact surfaces around the connecting part, and the concave-convex engaging part 41 The engagement is maintained by the bias of a spring 42 wound around the shaft 9.

As a result, the operation side 8d and the operation side 8e can rotate integrally with respect to the cylinder 2 in the proper orientation, thereby achieving a normal connection operation.

For cylinders 2 that are incorrectly oriented, the spring 42
As a result, the engagement of the concave-convex engaging portion 41 cannot be maintained, making it impossible for the operating side 8e to follow the operating side 8d, thereby avoiding cylinder connection in an inappropriate orientation and damage to various parts due to excessive operation.

Comparative Example 5 (FIGS. 9 and 10) As shown in the figures, the cylinder set lever 8 and the slide member 10 are pivoted at one end and connected to a connecting fitting 19 by a pin 53 at the other end. 5
4 and a link 57 whose one end is connected to the middle of the lever 54 by a pin 55 and the other end is connected to the middle of the lever 54 by a pin 56.

The link 57 is divided into an operation side 57a and an operation side 57b, and each divided end is made into a male and female fitting part 57c which can be expanded and contracted, and a ball 59a with a spring 58 acting between the male and female parts, and this ball 59a. A click stopper 59 is formed by the engagement hole 59b that is elastically engaged with the engagement hole 59b.

The click stopper 59 maintains the integration of the operating side 57a and the working side 57b of the link 57 for cylinders 2 in the proper orientation to achieve normal connection of the cylinders 2.

If the cylinder 2 is in an incorrect orientation, the above-mentioned integration cannot be maintained, and the ball 59a and the engagement hole 59b will disengage, making it impossible for the operating side 57b to follow the operating side 57a, resulting in failure. Avoid damage to various parts due to cylinder connections in the correct orientation and excessive operation.

Comparative Example 6 (FIG. 11) As shown in the figure, the operating portion 8f of the cylinder set lever 8 is an elastic member with a groove 61, molded from a suitable synthetic resin, and elastically fitted onto the operating end of the lever 8. are doing.

As a result, when connecting a cylinder in the proper orientation, the operating part 8f integrally operates the lever 8 to achieve a normal connection operation, whereas for a cylinder in an incorrect orientation, the operating part 8f operates the lever 8. By opening and separating as shown in the imaginary line, damage to various parts due to improper cylinder connection or excessive operation is avoided.

Comparative Example 7 (FIG. 12) As seen in the figure, an elastic engagement portion consisting of a bifurcated spring member 71 and a bifurcated engagement portion 72 is provided between each divided end 10b and 10c of the slide member 10, and a proper When connecting a cylinder in an incorrect orientation, the engagement is maintained to achieve normal connection operation, but when a cylinder is connected in an incorrect orientation, the engagement is disengaged, resulting in connection of a cylinder in an incorrect orientation or excessive operation. Avoid damage to each part.

Comparative Example 8 (Fig. 13) In place of the bifurcated spring member 71 of the eighth embodiment, a scissor-shaped opening/closing bifurcated member 82 activated by the spring 81 is used, and its function is the same as that of the seventh comparative example. .

In all of Comparative Examples 1 to 8, the cylinder setting mechanism directly presses against a gas cylinder that is oriented incorrectly and is not connected to generate excessive operating force, thereby activating the safety mechanism. Damage sometimes occurs to the gas cylinder or the cylinder connection port to which it is connected, and this is dangerous as it may cause gas leakage when the gas cylinder is set up and used again next time. In order to avoid this, if the various safety mechanisms described above are made to operate with a small operating force, a strong operating force cannot be transmitted, resulting in the problem that it is difficult to fully set the gas cylinder in the correct orientation.

On the other hand, in the structure of Embodiment 1, the prevention of setting of a gas cylinder whose orientation is incorrect is to prevent the cylinder setting mechanism from setting the cylinder in response to the cylinder being set. Even if an excessive operation is performed against the pressure, the operating force will not act on the gas cylinder or the cylinder connection port at all, and the above-mentioned problem will not occur. Further, in response to the above-mentioned excessive operating force, since the excessive operating force is prevented from acting on the cylinder setting mechanism or the cylinder setting prevention means by the response of the play part, the cylinder setting mechanism is prevented from being blocked from being set. Damage due to abnormal operation can be further prevented, and the operation of the operating section at this time may have an unusual operating state or feel due to the movement of the play section, and a state of large operating resistance due to the cylinder setting prevention. Since this occurs as a change from the previous year, the user can easily notice this and can immediately deal with the problem rather than simply not being able to set the gas cylinder.

It should be noted that each of the safety mechanisms shown in Comparative Examples 1 to 8 can be used as a substitute for the play portion of Example 1 in other examples. In this case, in the operation transmission system, it is necessary to provide the gas cylinder set blocking means on the side of the operating section such as the operating lever.

Effects of the invention According to the present invention, when the cylinder setting mechanism is operated with the gas cylinder in an incorrect orientation, the cylinder setting prevention means responds to the action of the gas cylinder at this time and prevents the operation of the cylinder setting mechanism, thereby preventing the cylinder setting mechanism from being operated in an incorrect direction. Since the gas cylinders are prevented from being pressed and connected in the wrong direction, it is possible to prevent malfunctions or dangerous situations caused by using the gas cylinder with the gas cylinder set in the wrong direction.

Furthermore, even if an excessive operating force is applied to force the cylinder setting operation while the cylinder setting operation is blocked by the cylinder setting prevention means, the play part responds to this, so that the gas cylinder and its connection port are not affected. It is possible to prevent strong external forces from acting on the parts and prevent them from being damaged and the risk of gas leakage etc. during the next use. Since excessive operating force is prevented from acting on the cylinder setting mechanism or the cylinder setting blocking means, it is possible to further prevent damage to the cylinder setting mechanism due to abnormal operation while the cylinder setting mechanism is being blocked. When operating the operating section, a different operating state and feel than usual occurs due to the movement of the play section, as a change from the large operating resistance state due to the cylinder setting prevention, so the user is easy to notice this and may simply notice that the gas cylinder is not set. Rather than being unable to use the system, you can immediately deal with it.

[Brief explanation of the drawing]

Fig. 1 is a slope view showing the first embodiment, Fig. 2 is a partial vertical sectional view, Fig. 3 is a partial cross-sectional plan view, and Fig. 4 is a partial longitudinal sectional view.
The figure is a side view of the first comparative example, Figures 5 and 6 are side views of the second and third comparative examples, Figure 7 is an exploded slope view of the fourth comparative example, and Figure 8 is a rear view. , Figure 9 is the fifth
FIG. 10 is a side view of the comparative example, FIG. 11 is a side view of the sixth comparative example, FIG. 12 is a slope view of the seventh comparative example, and FIG. 13 is a partial cross-sectional view of the eighth comparative example. It is a slope view. 1...Cylinder connection port, 2...Gas cylinder, {3
... protrusion, 14 ... locking member} (cylinder connection direction regulating means), 5 ... gas supply path, {8 ... cylinder set lever, 10 ... cylinder pressing slide member, 19 ... connection fitting} 12... Cylinder setting mechanism, {22... Spring (elastic connection part) 31, 32...
...Magnet, 41...Concave/convex engaging portion, 42...Spring, 59...Click stopper, 8f...Operation section, 71...Bifurcated spring member, 72...Bifurcated engaging portion, 81...Spring, 82... Scissor-shaped opening/closing bifurcated member}
(disconnection connection part).

Claims (1)

[Scope of Claim for Utility Model Registration] In a cassette stove that has a cylinder setting mechanism that presses and connects a loaded gas cylinder to the cylinder connection port that connects the gas cylinder in the gas supply path and releases the pressure, a gas cylinder that is oriented incorrectly is press-connected. A cylinder setting prevention means is provided for preventing the cylinder setting operation of the cylinder setting mechanism in response to the operation of the cylinder setting mechanism, and the cylinder setting mechanism is provided with a cylinder setting prevention means that is located between or between the members on the operation section side from the position where the cylinder setting prevention means is activated. A cylinder setting safety device for a cassette stove, characterized in that a play part that responds to excessive operating force is provided on the side of a cylinder setting prevention means.