JP2012237503A - Portable gas stove - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve a portable gas stove which, while having a faulty installation prevention mechanism, cannot fully prevent the faulty installation of a gas bomb placed in an improper position and state.SOLUTION: This portable gas stove includes a combustion unit and a bomb storage unit A. A governor and a bomb installation unit which are separately installed and secured are joined together by a physical means (e.g., the front tip of the bomb installation unit is locked and joined to a mechanical board 4 which is a joined part fixedly attached to the front surface of the governor 2), whereby the three elements of the governor 2, the bomb installation unit and the gas bomb 5 which should cooperate during installation of the gas bomb 5 are put in an integrated joint relationship. This joint relationship effectively controls the characteristic behavior of the governor 2 impairing functions that the faulty installation prevention mechanism should originally perform and causing the problem of faulty installation, thereby allowing the faulty installation prevention mechanism to fully exhibit its functions and effects that it should provide.

Description

  The present invention relates to a cassette cooker, and more particularly, to a cassette cooker equipped with a cylinder mounting device for mounting a gas cylinder to a governor by sliding a slide holding a gas cylinder mainly by pushing down a lever using a link mechanism.

    A cassette stove is a cooking device that uses a small-capacity gas cylinder filled with liquefied gas as a heat source, and includes a combustion section equipped with a gas burner and a governor that is a pressure regulator, and a gas cylinder that is a heat source is detachably accommodated. A gas cylinder containing a cylinder containing a gas cylinder, vaporizing the liquefied gas filled in the gas cylinder, injecting and supplying the gas to the governor, and using the gas burner in the combustion section It is ignited and burned for cooking.

  In addition, commercially available cassette cookers are equipped with a cylinder mounting device that easily mounts a gas cylinder and holds the mounting state safely and stably. Generally, a slide and link mechanism that holds and slides the gas cylinder. A cylinder mounting device of the type that slides the slide in the mounting direction by pushing down the lever is employed.

  The present specification also assumes this type of cassette stove as a basic premise.

  As described above, the cassette stove is highly appreciated and widely used as a cooking utensil that can be easily used and can obtain a certain amount of heat, but it is a detachable gas cylinder that fills and encloses liquefied gas and injects high-pressure vaporized gas. It cannot be denied that there is inherently a danger of accidents in terms of using heat as a heat source, and for this reason, many proposals and practices have been repeated to secure and improve the safety of use. One of the results is an erroneous mounting prevention mechanism that prevents and avoids mounting (erroneous mounting) of gas cylinders in an inappropriate position.

That is, in the cassette stove, the vaporized gas is injected and supplied from the nozzle to the governor through the valve tube (housing) disposed inside the cylinder from the gasified layer of the liquefied gas filled in the gas cylinder, and adjusted to an appropriate pressure with the governor. Since the gas is supplied to the gas burner of the combustion section after being pressurized, safe and stable use of combustion is ensured, so that the gas cylinder is placed in the cylinder housing section in an appropriate position with the valve orientation facing upward. If it is not set and installed in the governor, the fuel gas (raw gas) that has not been vaporized is supplied to the governor and vaporizes all at once, so it cannot be adjusted to an appropriate pressure by the governor, and a large amount of vaporized gas is ejected from the combustion section A large flame is generated by the igniting, resulting in a serious accident such as a fire or injury.

  This danger has been strongly recognized since the introduction of the cassette stove. For this reason, the gas cylinder is marked to indicate the appropriate position (the position corresponding to the direction in which the internal valve is installed), and the precautions for use are also included. Although it was attached, there were not a few accidents in which it was attached to the governor in an inappropriate position at the time of use. For this reason, the following incorrect attachment prevention mechanism has been proposed and already adopted as a standard.

FIG. 5 illustrates this mechanism for preventing erroneous mounting, and a notch is provided at the position near the nozzle at the top of the gas cylinder in the vicinity of the nozzle so as to indicate an appropriate position at the valve placement direction corresponding position. In the vicinity of the insertion opening on the rear side of the governor facing the gas cylinder to be mounted, a suitably-shaped convex piece that fits into the notch of the flange is provided at a position corresponding to the notch of the flange.

  Since the mismounting prevention mechanism is configured as described above, if you attempt to move the gas cylinder set in the cylinder housing in the appropriate position and move it toward the governor, the convex part of the governor will be attached to the flange of the gas cylinder. Since the gas cylinder does not interfere with the press notch that fits into the notch provided, you can easily push down the lever of the cylinder mounting device and move the slide to install the cylinder and use it for combustion. If the lever is not set in the correct position, the lever will push down against the flange that does not have a notch to fit, even if you try to install the gas cylinder by pushing down the lever. In this case, the gas cylinder cannot be advanced to the mounting position and the risk of erroneous mounting can be avoided.

Even in JIS standards, in order to prevent danger when cylinders are installed (incorrectly installed) in an improper position, the lever that is linked with the link mechanism is pushed down to slide the slide. On the premise of a general cylinder mounting device, it is required that the lever cannot be pushed down with a force of 150 Newton or less when the cylinder is set in an inappropriate position.

However, even with the above-described cassette stove equipped with the erroneous mounting prevention mechanism, the gas cylinder is installed with the gas cylinder set in an inappropriate position, and the convex part of the governor hits the flange part without a notch, and the gas cylinder is installed. In spite of this, the lever can be easily pushed down with a force of 150 Newton or less, and this causes an erroneous mounting in which a gas cylinder in an inappropriate position is mounted on the governor.

In such misinstallation cases, the deformation and breakage of the flange are often seen.Therefore, there is a direction that it can be immediately identified as the cause and that this problem can be solved by changing the flange material and increasing the strength. However, even if the deformation or breakage of the flange is the cause or the result of incorrect mounting, it is unclear whether it is difficult to push down the lever if the strength of the flange is increased (for example, 150 Newton or less required by the JIS standard) It is not possible to push down the lever with the force of), and to be able to eradicate the room for erroneous mounting itself must be regarded as a guess without reasonable grounds.

In addition, increasing the strength by changing the material of the gas cylinder flange inevitably increases the manufacturing cost and the product price, and the manufacturing process of the flange already requires many man-hours and high accuracy. There are significant technological barriers to change.

For this reason, in a cassette cooker equipped with an erroneous mounting prevention mechanism, it is most important to elucidate the mechanism of why the lever can be pushed down with a force of 150 Newton or less and erroneous mounting occurs. If we do not wait for the elucidation, it will not be possible to clarify whether the problem can be solved by changing the material and improving the strength of the flange.

However, even in the light of conventional technologies such as patents and utility model publications, such knowledge has not been able to come into contact with suggestive or suggestive information.

Utility Model Registration No. 3109059 JP-A-8-254321 Japanese Patent Laid-Open No. 9-203515

  It is an object of the present invention to facilitate a lever of a cylinder attaching / detaching apparatus in which a gas cylinder set in an inappropriate position state is continuously provided by a slide and a link mechanism even in a cassette stove having a convex side which is an erroneous mounting preventing mechanism. The problem is that it can be pushed down (for example, with a force of 150 Newton or less) and erroneous mounting occurs. Even if you try to install a gas cylinder in an inappropriate position on the governor, An object of the present invention is to realize and provide an inexpensive cassette stove with a simple configuration that cannot be pushed up and down, and that eliminates and eliminates the risk of erroneous mounting.

The present inventor has conducted research and experiments on the reason why the lever can be easily pushed down with a force of 150 Newton or less in a cassette cooker equipped with an erroneous mounting prevention mechanism. We were able to obtain the knowledge of.

According to the inventor's research and experiment, when a gas cylinder that is in an inappropriate position and the notch of the flange is not in a position corresponding to the convex piece of the governor is intended to be installed in the governor with the cylinder mounting device, the governor is provided. As a result of the projecting protruding piece naturally striking the flange, the lever of the cylinder mounting device cannot be pushed down, and the mounting of the gas cylinder to the governor is hindered.

However, when force is applied to push down the lever further and force the cylinder to be installed (force of 150 Newton or less), the governor can not resist the force to push down the lever and the front side (the surface from which the ignition rod protrudes) It is in a state of “sliding” in the direction of) and floats in the back of the entire governor (the surface provided with the insertion opening) and sinks in the front (the surface from which the ignition rod protrudes).

  Here, the above-mentioned inclination that floats behind the entire governor (the surface provided with the insertion opening) and sinks forward (the projecting surface of the ignition rod) is also above the position where the projecting piece of the governor hits the flange of the gas cylinder (flange) Therefore, the resistance of the convex piece to the flange (that is, the gas cylinder) that comes into contact with the flange must be sweet.

  FIG. 6 schematically shows this relationship, and as shown in FIG. 6a, even if the flange is not deformed or damaged, the contact position is above the flange (in the edge direction). As a result of the slight movement of the convex piece, the resistance against the pressing of the flange is reduced, so that the lever can be easily pushed down, and the convex position depends on the contact position and the continuously applied force (force of 150 Newton or less). There is a serious danger that a piece can get over the edge of the flange and allow the gas cylinder to be installed incorrectly, so changing the material of the flange and increasing the strength alone will not solve the mounting error problem of this type of cassette stove. .

  In addition, if the flange is deformed or damaged due to the resistance of the convex piece that hits the flange, the height of the flange that resists the convex piece that has been moved to the upper side of the flange due to a change in the flange shape is also strong. Therefore, the lever can be pushed down more easily, and the upper edge of the flange can be easily climbed over and pierced by the convex piece, and the risk of erroneous mounting becomes a real problem. (FIGS. 6b to 6d)

  In this way, when mounting a gas cylinder set in an inappropriate position with a cassette stove equipped with an erroneous mounting prevention mechanism, it does not require a special force to push down the lever of the cylinder mounting device until it is erroneously mounted. The biggest cause of this is the unique behavior of the governor when trying to push down the lever (the governor is “sliding” in front of the ignition rod protruding, The problem cannot be solved unless the behavior of the governor is effectively regulated or suppressed.

  Here, the above-mentioned governor's unique behavior is that the cylinder mounting device and the gas cylinder are placed in an integral connection relationship, whereas the governor is independently connected without any connection relationship between the cylinder mounting device and the gas cylinder. It is related to the fact that it is fixedly attached, and if the governor is physically connected between the cylinder mounting device and the three members are given an integral connection relationship, the behavior of the governor is regulated or suppressed, and the way to solve the problem can be opened. It is guessed.

  In fact, according to the inventor's experiment, by physically connecting the governor and the cylinder mounting device, an integral connection relationship is formed between the governor, the cylinder mounting device, and the gas cylinder when the cylinder is mounted. When the gas cylinder set in an improper position is intentionally repeated, the above behavior of the governor is greatly suppressed, and the lever cannot be pushed down even if a force exceeding 150 Newton is applied. As far as the present inventor's experiment was made, no erroneous mounting occurred even when a deformed flange was used.

  The present invention is a result of development based on the above-mentioned knowledge of the present inventor. The invention of claim 1 is a combustion comprising a removable gas cylinder filled with liquefied gas as a heat source and provided with a gas burner. A cylinder housing portion having a portion and a governor, and a cylinder mounting device for mounting the gas cylinder to the governor, the cylinder mounting device comprising a slide and a lever connected to the slide via a link mechanism, In the cassette cooker for mounting the gas cylinder to the governor by sliding the slide by pushing down a lever, the cylinder mounting device and the component part or fixed connection part of the governor are physically connected to each other. It is a cassette stove characterized by becoming.

The invention according to claim 2 is characterized in that the cylinder mounting device and the constituent parts or fixedly connected parts of the governor are connected in one or both of them in a movable relationship such as locking. A cassette stove according to claim 1.

According to a third aspect of the present invention, there is provided a mechanical substrate in which the fixedly connected portion of the governor is fixedly attached to the front surface of the governor, and the front end portion of the partition plate forming the base of the cylinder mounting device is attached to the mechanical substrate. The cassette stove according to claim 1 or 2, wherein the cylinder mounting device and the governor are connected by being locked so as to be hooked at an appropriate position.

According to a fourth aspect of the present invention, the mechanical substrate has at least a vertical length and an area extending from the bottom surface position of the mounting portion of the governor to the entire operating region of the lever, at least in a cut portion of a through groove through which the lever is inserted and locked. The cassette stove according to claim 3, wherein the cassette stove is provided.

The invention according to claim 5 is characterized in that the long hole forming the link guide in the cylinder mounting means has a gentle slope in the horizontal direction and has a large step between the depressed portion and the lock portion of the lever. It is a cassette cooker.

  As described above, the cassette stove according to the present invention effectively complements the standard mis-mounting prevention mechanism simply by physically connecting the governor and the cylinder mounting device that are separately mounted and fixed to the cylinder housing portion. According to the present invention, when installing a gas cylinder in an inappropriate position, the lever of the cylinder mounting device can be pushed down with an ordinary force (for example, a force of 150 Newton or less). Therefore, it is possible to sufficiently ensure the function and effect of the erroneous mounting prevention mechanism that allows the room for erroneous mounting itself to be lost.

  In addition, the physical connection between the governor and the cylinder mounting device in the cassette stove according to the present invention does not require a fixed configuration. For example, the base of the cylinder mounting device is attached to the governor or its fixed connection portion. It is also effective in a movable connection configuration such as locking the tip of the partition plate, so that it can be easily applied to conventional products without significantly increasing the number of parts, man-hours, and labor. There is no increase in product price.

  As described above, the present invention fully exhibits its function on the premise that the conventional standard erroneous mounting prevention mechanism is provided, and not only the configuration itself is simple and inexpensive, but also the erroneous mounting described above. Since it can be easily implemented in all conventional products having a prevention mechanism, it is nothing but the one that realizes and provides the cassette stove mentioned in the problem.

It is a top view which shows an example of the cassette cooker which concerns on this invention. Example 1 It is a front view which shows an example of the mechanical board | substrate in the cassette cooker which concerns on this invention. Example 1 It is the top view and front view which show an example of the cylinder mounting apparatus in the cassette cooker which concerns on this invention. Example 1 It is a front view which shows typically an example of the long hole used as the link guide of the cylinder mounting apparatus in the cassette stove concerning this invention, and a prior art example. Example 1 It is a top view which shows the function (correlation of the flange of a gas cylinder, and the convex piece of a governor) of the erroneous mounting prevention mechanism by the position state of the gas cylinder set in the cylinder accommodating part. It is a front view which shows typically the mechanism of the incorrect attachment in the conventional cassette stove.

  In the case of a cassette cooker equipped with a cylinder mounting device that slides the gas cylinder sandwiched in the mounting direction by pushing down the lever connected with the link mechanism, the lever must always be pressed down in the case of a gas cylinder in an inappropriate position. The purpose of providing a cassette stove that prevents the risk of mis-installation as a difficult thing has been realized without increasing the number of special parts and man-hours, as well as the labor and cost of manufacturing work.

  1 to 4 show an embodiment of a cassette cooker and its main components according to the present invention.

  As shown in FIG. 1, the cassette stove 1 according to the present invention is common in the basic configuration to the conventional most common cassette stove, and the stove body is composed of a cylinder accommodating part A and a combustion part B (cylinder accommodating part). A cover C is attached to the portion A so as to be freely opened and closed), and a governor 2 as a pressure adjusting device projects an ignition rod 23 on the front portion to the outside at the end of the cylinder housing portion A on the front side of the stove. A protruding piece 22 is fixedly attached to or formed on the rear surface portion of the governor 2 so as to be opposed to the gas cylinder 5 in which the insertion port 21 is accommodated.

In addition, a gas burner is attached and fixed to the combustion section B, and the gasification gas adjusted to an appropriate pressure is supplied from the governor 2 through a pipe to be used for combustion.

Further, a partition plate 31 is attached and fixed in the longitudinal direction of the cylinder housing portion A in a region that defines the cylinder housing portion A and the combustion portion in the stove body. As shown in FIG. A slide 32 urged rearward (not shown) and provided with gas cylinder clamping pieces 321 and 322 on the cylinder accommodating part A side is slidably attached, and a lever 33 is placed at an appropriate position on the front end side of the slide 32. Are connected by a link mechanism, and the lever 32 is pushed down to slide the slide 32 holding the gas cylinder 5 in the direction of the front governor 2 so as to mount the gas cylinder 5 on the governor 2. .

  Here, the link mechanism in which the slide 32 and the lever 33 are continuously provided is also a general one, and a long hole 331 serving as a link guide is provided in the rear end side region of the lever 33, and at a lower front position of the long hole 331. The lever 33 is rotatably attached to the partition plate 31 with a caulking pin, and the slide 32 is slidably attached to the long hole 331 with the caulking pin. As a result, when the lever 33 is pushed down, the slide 32 is elongated. Slide forward with a horizontal length of. (Fig. 3a, b)

  As described above, the basic structure of the cassette stove 1 according to the present invention is not different from that of the conventional example, but the greatest difference from the conventional example is that the mechanical board 4 fixedly attached to the front surface of the governor 2 and the cylinder mounting device. 3 and the hook portion formed at the tip 312 of the partition plate 31 that forms the base of the cylinder mounting device 3 is engaged with the mechanical substrate 4 and further connected to the partition plate 31 by caulking pins. Each of them will be described in terms of the shape of the long hole 331 formed in the lever 33 that is rotatably attached.

  The mechanical board 4 is a substantially rectangular metal plate shown in FIGS. 1, 2, and 3 c, and is fixedly attached to the front side of the governor 2 from which the ignition rod 23 protrudes, and is fixedly connected to the governor. A through-groove 41 for inserting the lever 33 is cut in the vertical direction on the left end side of the plate surface (a position corresponding to the position where the lever 33 is disposed), and at least the through-hole is formed. In the cut-out portion of the groove 41, the length and area in the vertical direction that do not hinder the operation (pushing down and returning) of the lever 33 to be inserted, that is, the bottom surface position of the mounting portion of the governor 2 with the mechanical substrate 4 continuously provided, The vertical length and area over the entire working area is given.

On the other hand, the front end portion 312 of the partition plate 31 that forms the base of the cylinder mounting device 3 is cut and formed in a hook portion that can be hooked and locked at an appropriate position (for example, the upper edge portion) of the opposing mechanical substrate 4. Has been.

In addition, it is well known that a long hole serving as a link guide is generally made on the rear end side of the lever 33. However, the long hole in a general cassette stove is inclined at a large angle close to the vertical direction. The cassette stove 1 according to the present invention is gently formed by giving a small angle near the horizontal direction while the guide portion and the lock portion have a small step (Fig. 4b). The step of the part is formed large.
(Fig. 4a)

  Since the cassette stove 1 according to the present invention has the above-described configuration, it has the following characteristic operations and effects different from the conventional cassette stove.

  First, the mechanical substrate 4 is fixedly connected to the front surface of the governor 2, and the front end portion 312 of the partition plate 31 that is the base of the cylinder mounting device 3 facing the cutout is formed in the hook portion. Therefore, the hook portion formed at the tip 312 of the partition plate 31 is mechanically connected between the cylinder mounting device 3 and the governor 2 which are conventionally attached and fixed independently and do not form any integral relationship. It can be locked so as to be hooked on the upper edge portion of the substrate 4, and for the first time, an integral connection relationship is given between them.

  As described in detail in the section “Means for Solving the Problems”, the problem of the improper mounting prevention mechanism not functioning effectively when attempting to mount a gas cylinder in an improper position (to push the lever down) The main cause of the problem of allowing even incorrect mounting without requiring a particularly strong force) is that the cylinder mounting device and the governor are attached and fixed separately in the conventional cassette cooker, and no relationship is given. It is in a state of “sliding” in the front, and it has an insertion port and a convex piece, and it is in a place that creates a slope that sinks in the front with a floating igniter protruding, and if the two are physically connected, it is unique to the governor The problem is melted and the problem is solved.

In the present invention, the tip end portion 312 of the partition plate 31 of the cylinder mounting device 3 is locked to the upper edge of the mechanical substrate 4 so that a physical and integral connection relationship is established between the cylinder mounting device 3 and the governor 2. For this reason, even if an attempt is made to mount the gas cylinder 5 in an inappropriate position, the lever 33 cannot be pushed down and the risk of erroneous mounting can be avoided.

  Moreover, in the present embodiment, the integral connection relationship that is provided between the cylinder mounting device 3 and the governor 2 to solve the problem is not limited to the fixed connection relationship, and the movable connection such as the locking in the present embodiment. The example clearly shows that the effects can be obtained even if the relation is included, and that the cylinder mounting device 3 and the governor 2 can be connected not only to their original components but also to fixedly connected parts.

  In addition, in the conventional cassette stove, for the purpose of easily performing the lever operation with a small force, a large angle of inclination near the vertical direction is given to the long hole cut at the lever rear end side and functioning as a link guide. The step between the guide part and the lock part is also small (Fig. 4b), or it may have helped the lever to be pushed down easily when a gas cylinder in an inappropriate position is installed. Absent.

  On the other hand, the long hole 331 in the cassette stove 1 according to the present invention is gently formed by giving a small angle of inclination near the horizontal direction and has a large step between the guide portion and the lock portion (see FIG. 4a) The lever is pushed down so that a relatively large force is required, and when attaching a gas cylinder in an appropriate position, it is not aware of any other force, but it is intended to be attached in an inappropriate position. In this case, it becomes more difficult to push down, and in particular, as a result of a large step between the guide portion and the lock portion, it is extremely difficult to lock and hold the lever 33 to the push-down completion position.

  Of course, when trying to mount a gas cylinder in an improper position with a cassette stove equipped with an erroneous mounting prevention mechanism, the problem that the lever does not become difficult to push down and erroneous mounting occurs is the cylinder mounting device 3 and the governor. The problem is basically solved by giving an integral connection relationship between the two, but the shape of the long hole can also help to solve the problem, and the normal use with the gas cylinder 5 in an appropriate position is provided. It also helps prevent accidents caused by negligence in the condition.

  In the present embodiment, the end portion 312 of the partition plate 31 is hooked and locked on the mechanical substrate 4 fixedly connected to the front surface of the governor 2 so as to be movable and integrated with the governor 2 and the cylinder mounting device 3. Although the connection relationship is given, the present invention is not limited to this embodiment, and both are connected by some physical means to suppress the inherent behavior of the governor, which was the main cause of the problem, and the problem is solved and the object of the present invention is achieved. Needless to say, the scope of the present invention is not limited to this embodiment.

DESCRIPTION OF SYMBOLS 1 cassette cooker 2 governor 3 cylinder attachment / detachment apparatus 4 mechanical board 5 gas cylinder 21 insertion slot 22 convex piece 23 ignition rod 31 partition plate 32 slide 33 lever 41 through groove 42 safety reset arm 51 flange 52 notch 53 nozzle 312 tip of partition plate Part (hook part)
321 and 322 Clamping piece 331 Long hole A Cylinder housing part B Combustion part C Cover

Claims (5)

A detachable gas cylinder filled and sealed with liquefied gas is used as a heat source, and includes a combustion section equipped with a gas burner, a cylinder accommodating section equipped with a governor, and a cylinder mounting device for mounting the gas cylinder on the governor. In a cassette cooker, wherein the apparatus comprises a slide and a lever connected to the slide via a link mechanism, and the gas cylinder is attached to the governor by sliding the slide by pushing down the lever.
The cylinder mounting device and the governor component parts or fixed connection parts are physically connected to each other;
Cassette hob characterized by. The cylinder mounting device and the component part of the governor or the fixed continuous part are connected in one or both of them in a movable relationship such as locking,
The cassette stove according to claim 1, wherein: According to a third aspect of the present invention, there is provided a mechanical substrate in which the fixedly connected portion of the governor is fixedly attached to the front surface of the governor, and the front end portion of the partition plate forming the base of the cylinder mounting device is attached to the mechanical substrate. The cassette stove according to claim 1 or 2, wherein the cylinder mounting device and the governor are connected by being locked so as to be hooked at an appropriate position. The mechanical board has a length and an area in the vertical direction extending from the bottom surface position of the mounting portion of the governor to the entire operation region of the lever, at least in a cutting portion of a through groove for inserting and locking the lever;
The cassette stove according to claim 3, wherein: The long hole forming the link guide in the cylinder mounting means has a gentle slope in the horizontal direction, and has a large step between the depressed portion and the lock portion of the lever,
Cassette hob characterized by.