KR20120029925A - A pressure cooker having lid rotation locking means - Google Patents

Abstract

PURPOSE: A pressure rice cooker having a lid rotation locking unit is provided to prevent rotation of a lid because multiple insertion grooves and protrusions are mechanically fixed and a body and a lid are sealed by a silicon packing in a state where steam pressure remains in the body. CONSTITUTION: A pressure rice cooker having a lid rotation locking unit comprises multiple insertion grooves(17) and multiple protrusions(15). The multiple insertion grooves are formed on the top of a body(10) in predetermined gap. The multiple protrusions are formed underside of a silicon packing(20) corresponding to the insertion grooves in predetermined gap. The insertion grooves and protrusions are formed in a vertical direction with respect to rotation direction of a lid or an inclined direction with predetermined angle. In case, steam pressure remains in the body and the protrusions of the silicon packing are inserted into the insertion grooves, the protrusions are hung on the insertion grooves to fix, thereby the lid cannot rotate even if users forcibly rotate.

Description

 Pressure cooker with lid rotation locking means {A PRESSURE COOKER HAVING LID ROTATION LOCKING MEANS}

The present invention relates to a pressure cooker provided with a lid, and more particularly, when pressure remains inside the pressure cooker, a lid that is firmly fixed to the lid engaging with the main body, but the user does not turn the lid, but the lid does not rotate the lid rotation It relates to a pressure cooker having a locking means.

In general, the pressure cooker or pressure cooker, for example, aluminum pressure cooker, stainless steel pressure cooker or electric rice cooker is composed of a lid coupled to the body and the upper side of the body.

The pressure cooker is mainly used as a device for making rice by putting the washed rice inside the main body, closing the lid, and heating it by heating means. This pressure cooker is used in various steamed dishes because the inside of the pressure cooker is maintained at a high pressure and can increase the boiling point of water.

On the other hand, such a pressure cooker often causes an accident that the cap explodes. The explosion of the pressure cooker is caused by the high pressure generated inside the pressure cooker, which may be caused by a dimensional error of the manufacturing part, but most of the time, a device that discharges the high pressure steam does not operate properly.

The pressure cooker is to open the lid after all the steam inside the main body after cooking. However, even though the steam pressure inside the main body often remains, the user may open the lid forcibly and cause the lid to explode.

In order to prevent such a safety accident, conventionally the pressure cooker is provided with a steam discharge device for discharging the steam inside the main body before opening the lid. In the case of a pressure cooker which is widely used now, a pressure display device indicating a high and low internal pressure and a gravity weight installed above the steam exhaust hole to open when the internal pressure reaches a pressure suitable for cooking, Pressure control valve for discharging pressure while lifting weight and pressurizing the steam discharge hole with spring tension to open when the pressure inside the pressure cooker rises above the set value even when the pressure control valve malfunctions or the pressure control valve is operated. A safety valve with a packing is installed on the lid of the pressure cooker.

In addition, the side of the lid handle is installed so that the operating lever can be mounted up and down, and pushes the rubber packing installed between the main body and the lid while moving forward and backward by the operating lever inside the lid handle to discharge the steam pressure inside the body. The bar is installed. For example, after the rice is finished, the user grabs the main body and the lid handle with both hands to open the lid, and pushes the actuating lever with the thumb. The actuating lever is immersed and the push bar moves forward by interlocking. By pushing the rubber packing, the installed sealing member, it is possible to discharge all the steam pressure inside the cooker.

As such, the conventional pressure cooker is provided with various pressure control valves, safety valves, and a steam discharge device installed in the lid handle, so that the user can open the lid in a state where the steam pressure inside the main body is not discharged and an explosion accident occurs. It seems unlikely. However, even if the various safety devices and the steam discharge device is provided, the user still knows that the steam pressure remains inside the main body and rotates the lid and often causes the case to explode.

These accidents, such as the explosion of the lid is most often caused by the user does not properly observe the rules of use rather than a defect of the product itself. In particular, the pressure cooker has to be cooked only of a predetermined type, such as rice, the user is used to cook steamed or samgyetang or various porridge dishes ignoring the regulations.

For example, finely chopped vegetables or soybean husks used to cook porridge may get caught in the gap between the pressure control valve and safety valve to prevent the internal vapors from escaping and prevent the valve from operating normally. In addition, the oil coming out when cooking chicken steamed or samgyetang is sandwiched between the main body and the lid or between the rubber packing installed between the main body and the lid to act as a lubricating oil, so that the steam pressure remains inside the main body and the lid and the main body or rubber packing are in close contact with each other. Even if the lid is rotated relatively easily, there was a problem opening the lid. As such, when the lid is opened under high pressure, the lid may jump upwards, which may lead to an accident that causes fatal damage to the human body.

Therefore, in recent years, when opening and closing the lid of the pressure cooker, by pressing the opening and closing handle installed in the center of the lid to open the safety opening and closing valve installed in close contact with the lower part of the container to completely discharge the residual pressure inside the container can rotate the opening and closing handle to open and close the lid The lid opening and closing device of the pressure cooker was further developed to further improve safety. Since the lid opening and closing device has a much larger space through which steam is discharged compared to a conventional pressure regulating valve or safety valve, there is a lot of fear of foreign substances being caught, but oil or viscous material generated during the cooking process is a gap (orifice) of the safety opening and closing valve. It cannot be completely prevented from being lubricated by being sandwiched or sandwiched between rubber packings.

Therefore, even in such a conventional lid opening and closing device there is a problem that can not completely prevent the safety accident. In addition, the conventional lid opening and closing device has a disadvantage in that the structure is complicated and the product price increases.

Accordingly, the present invention is to solve the above-described problems of the prior art, the main object of the present invention during cooking or after the end of cooking, when the vapor pressure remains inside the main body by fixing the lid so that the user can not rotate It is to provide a pressure cooker that can prevent the lid explosion caused by forcibly opening the lid without knowing whether the internal pressure remains.

The present invention is also very simple and instead of the conventional complicated structure of the lid opening and closing the lid rotation to secure the lid can not be reliably rotated even in the high pressure state as well as the pressure of the main body without increasing the production cost It is to provide a locking means.

In addition, the present invention is to provide a lid rotation locking means that can be easily applied to aluminum casting products mainly used as a pressure cooker.

As a means for achieving the above object, the pressure cooker with a lid rotation locking means of the present invention, in the pressure cooker consisting of a body, a lid and a sealing member,

A plurality of fixing pieces formed at regular intervals on the outer circumference of the upper end of the main body and protruding a predetermined length outward; A plurality of engaging pieces formed at regular intervals on an inner circumference of the lid so as to contact the bottom surface of the fixing piece; It is formed on the bottom surface of the fixing piece and the upper surface of the engaging piece, it is possible to combine in the vertical direction, but the lid rotation locking means for preventing rotation in the horizontal direction, comprising a; When the lid is in close contact with the lid rotation locking means is characterized in that it is fixed so as not to rotate the lid.

In the present invention, the lid rotation locking means is characterized in that it comprises a locking groove formed on the bottom surface of the fixing piece of the main body so that the locking piece of the lid can be inserted.

The locking groove formed in the fixing piece is characterized in that the insertion portion formed to a depth that can be inserted into the locking piece of the lid, and the locking portion formed to protrude on both the left and right sides of the insertion portion.

The lid rotation locking means is formed on the upper surface of the locking piece of the lid and the bottom surface of the fixing piece of the main body and a plurality of parallel grooves and a plurality of projections formed on the upper surface of the locking piece of the cap and the fixing piece of the main body A rectangular groove and a square protrusion, or any one selected from the two rough surfaces formed on the upper surface of the locking piece of the lid and the bottom surface of the fixing piece of the main body.

The sealing member is a ring-shaped rubber packing or silicon packing, characterized in that the upper and lower elastic deformation portion is formed integrally in the upper and lower inner circumference of the ring portion in which elastic deformation easily occurs.

According to the pressure cooker equipped with the lid rotation locking means as described above, in the state in which steam pressure remains inside the main body during cooking or after cooking, since the main body and the lid are tightly fixed, the lid is turned even when the user forcibly turns the lid to open it. Because it does not go, it is possible to prevent the lid explosion accident.

1 is an exploded perspective view showing a pressure cooker equipped with a lid rotation locking means according to the present invention,
2 is a cross-sectional view showing a pressure cooker equipped with a lid rotation locking means according to the present invention;
3 to 5 is a partial cross-sectional view for explaining the operation of the pressure cooker equipped with a lid rotation locking means according to the present invention,
6 to 8 is a partial cross-sectional view showing various embodiments of the lid rotation locking means according to the present invention.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the pressure cooker equipped with a lid rotation locking means according to the present invention.

1 is an exploded perspective view showing a pressure cooker equipped with a lid rotation locking means according to the present invention, Figure 2 is a cross-sectional view showing a pressure cooker equipped with a lid rotation locking means according to the present invention.

As shown, the pressure cooker equipped with a lid rotation locking means of the present invention (hereinafter referred to as "pressure cooker"), the main body 10 and the lid 30 is coupled to the upper end of the main body 10, and the main body It comprises a sealing member 20 that is closely interposed between the 10 and the lid 30.

As shown, the lid 30 is provided with a gravity weight above the steam exhaust hole so that the internal pressure is opened when the pressure reaches the pressure suitable for cooking pressure control valve for discharging the pressure while lifting the gravity weight when the pressure rises (32) and the packing to be pressurized by the spring tension or the like in the steam discharge hole so that the pressure control valve 32 is opened when the pressure inside the pressure cooker rises above the set value even when the pressure control valve 32 is malfunctioned or operated. A safety valve 33 is provided.

And the lid handle 34 is installed on both sides of the lid 30 correspondingly, the lid handle 34 is a sealing member installed between the main body 10 and the lid 30 before opening the lid 30 ( 20 is provided with a steam discharging device (not shown) for discharging the steam pressure inside the body 10 to the outside by pushing inward.

On the other hand, a plurality of fixing pieces 15 protruding horizontally outward is formed on the outer periphery of the upper end of the main body 10. The fixing piece 15 is formed at regular intervals along the outer circumference of the body. The fixing piece 15 has a predetermined size and thickness.

A locking groove 17 having a predetermined size and depth is formed on the bottom of the fixing piece 15. Preferably this locking groove 17 corresponds to the locking piece formed in the lid (30).

As shown, a ring-shaped vertical wall 31 is integrally formed at the edge of the lid 30. A plurality of engaging pieces 35 protruding horizontally inwardly are integrally formed at the inner circumferential edge of the lower end of the vertical wall 31. In general, the sealing member 20 is mounted on the inner surface of the vertical wall (31). The locking piece 35 has a size and shape that can be inserted into the locking groove 17 formed on the bottom surface of the fixing piece 15.

The locking groove 17 has an insertion portion 18 formed to a depth where the locking piece 35 formed on the inner circumference of the lid 30 is sufficiently inserted. A locking portion 19 is formed to prevent 35 from being separated. For example, in the case of an aluminum pressure cooker, the height of the locking portion 19 is in the range of 1 to 3 mm. That is, when the height of the locking portion 19 is high, the ability to fix the locking piece 35 may be improved, but even when there is no pressure inside the main body 10, it may be difficult to rotate the lid 30. . In addition, the insertion portion 18 can be made relatively easily by forming two grooves at a predetermined interval on the bottom surface of the fixing piece 15 and then hitting a predetermined cutter from the outside to the inside.

Fixing pieces 15 formed on the outer periphery of the upper end of the main body 10 are formed to be spaced apart at regular intervals. The neighboring fixing piece 15 falls so that the locking piece 50 can pass therebetween. Therefore, the lid 30 is coupled downward from the top of the main body 10 to pass the locking piece 35 of the lid through the fixing piece 15, and then rotate the lid 30 to the left or right by an angle. The locking piece 35 and the fixing piece 15 are brought into close contact and fixed.

The sealing member 20 is installed on the inner side of the vertical wall 31 of the lid 30. The sealing member 20 may be mainly a ring-shaped silicon packing, rubber packing or other types of packing. The sealing member 20 is a ring portion 21 made of ring-shaped silicone or rubber, and the upper elastic deformation portion 23 and the lower elastic deformation formed to enable elastic deformation on the upper and lower inner circumference of the ring portion 21. It consists of a part 24.

When combining the main body 10 and the lid 30 of the pressure cooker, the sealing member 20 is located between the lid 30 and the main body 10. Therefore, the upper surface of the ring portion 21 is in contact with the bottom surface of the lid 30 and the bottom surface of the ring portion 21 is in contact with the upper surface of the rim of the main body 10. In addition, the upper elastic deformation part 23 is expanded toward the lid 30 when the pressure inside the main body 10 increases, and adheres to the bottom surface of the lid 30, and the lower elastic deformation part 24 is the main body 10. Spread toward the upper surface and the side of the main body 10 is in close contact with. As described above, the sealing member 20 is expanded and deformed when the pressure inside the main body 10 rises to be in close contact with the lid 30 and the main body 10, and shrinks and deforms when the pressure inside the main body 10 falls.

Hereinafter will be described with reference to the accompanying drawings the effect of the pressure cooker equipped with a lid rotation locking means according to the present invention.

Figure 3 illustrates the operation of closing the lid 30 in the pressure cooker 1 of the present invention. An inner wall of the lid 30 is provided with a sealing member 20. The lid 30 is coupled to the upper side of the main body 10 by allowing the locking piece 35 to pass between the fixing pieces 15 formed in the main body 10. And by rotating the lid 30 coupled to the upper side of the main body 10 to the left or right by a predetermined angle so that the fixing piece 15 and the engaging piece 35 is engaged on the same vertical line to combine the lid 30 Can be.

3 again shows the state before the steam pressure is generated in the main body 10. At this time, the lid 30 is lowered toward the main body 10 by its own load. Therefore, the bottom face of the fixing piece 15 and the top face of the locking piece 35 are not in close contact with each other. That is, the locking piece 35 of the lid 30 is positioned at a position corresponding to the locking groove 17 formed on the bottom surface of the fixing piece 15, but the locking piece 35 is not inserted into the locking groove 17. Is not. The sealing member 20 is pressed to some extent by the load of the lid 30, but the upper and lower elastic deformation parts 23 and 24 are not in close contact with the lid 30 and the main body 10. Not in condition.

4 shows the state after the steam pressure is generated in the main body 10. When the pressure of the main body 10 rises, the upper and lower elastic deformation parts 23 and 24 of the sealing member 20 are expanded and deformed to closely contact the lid 30 and the main body 10. As such, when the upper and lower elastic deformation parts 23 and 24 of the sealing member 20 are in close contact with the lid 30 and the main body 10, the internal steam does not leak to the outside, and the higher the internal vapor pressure, the higher the pressure. Member 20 is further expanded. As such, when the sealing member 20 is sufficiently inflated, the lid 30 is pushed upward. Then, the locking piece 35 of the lid 30 is inserted into the locking groove 17 formed on the bottom surface of the fixing piece 15. As such, when the locking piece 35 of the lid 30 is inserted into the locking groove 17, the locking piece 35 is caught by the locking portion 19 formed on both sides of the locking groove 17, so that the lid 30 is closed. You will not be able to rotate left or right.

 Subsequently, FIG. 5 shows a state in which all vapor pressures inside the main body 10 are removed. The steam pressure inside the main body 10 is removed by discharging the steam inside through various steam discharge devices or by sufficiently cooling the pressure cooker 1. When the internal pressure of the main body 10 is removed as described above, the lid 30 is lowered toward the main body 10 by its own load. The sealing member 20 is contracted and the upper and lower elastic deformation parts 23 and 24 are also separated from the cap 30 and the main body 10. In addition, the lid 30 is the locking piece 35 is separated from the locking groove 17 of the main body 10. Therefore, in this state, the lid 30 can be easily rotated from side to side.

As described above, the pressure cooker according to the present invention is provided with a lid rotation locking means that can not rotate the lid 30 from side to side when steam pressure remains in the main body 10.

6 to 8 show cross sections of the locking piece 35 and the fixing piece 15, showing various lid rotation locking means of the pressure cooker according to the present invention.

As shown in FIG. 6, a plurality of mountain grooves 13 having triangular cross sections are formed in parallel at regular intervals on the bottom surface of the fixing piece 15 of the main body 10, and the locking pieces of the lid 30 ( 35) On the upper surface, a plurality of mountain protrusions 44 are formed correspondingly. 6 (a) shows the state in which the cap 30 is rotatable due to the fixing piece 15 and the catching piece 35 being separated, and FIG. 6 (b) shows the hill-shaped groove 13 of the fixing piece 15. Mounting projections 44 of the engaging piece 35 is in close contact with the lid 30 so as not to rotate.

7 shows that rough surfaces 45 and 46 are formed on the bottom surface of the fixing piece 15 and the top surface of the locking piece 35. Therefore, as shown in FIG. 7B, when the engaging piece 35 is raised, the rough surface 45 formed on the bottom surface of the fixing piece 15 and the rough surface 46 formed on the upper surface of the engaging piece 35 come into close contact with each other. This increases and it is impossible to rotate the lid 30 from side to side. 8 illustrates a square protrusion 47 having a predetermined size on the bottom surface of the fixing piece 15, and a square recess 48 corresponding to the protrusion 47 on the upper surface of the locking piece 35. It is. Therefore, even in this case, when the engaging piece 35 is raised and the square protrusion 47 and the square recess 48 are coupled, the lid 30 cannot be rotated.

As described above, the pressure cooker 1 according to the present invention is provided with a lid rotation locking means between the fixing piece 15 formed on the upper outer periphery of the main body 10 and the locking piece 35 of the lid 30. As shown in FIGS. 4 and 6 to 8, the lid rotation locking means may be coupled in the up and down direction but have a structure that suppresses the movement in the horizontal direction.

In addition, in the pressure cooker 1 of the present invention, when the internal vapor pressure rises, the sealing member 20 expands and moves the lid 30 upward, so that the lid rotation lock between the fixing piece 15 and the locking piece 35 is increased. The means are coupled to each other to secure the lid 30 can not rotate left and right. On the contrary, when the internal vapor pressure decreases, the sealing member 20 is contracted and the lid 30 moves downward by its own load, and the lid rotation locking means between the fixing piece 15 and the locking piece 35 is separated and the lid is removed. 30 can be rotated left and right.

Accordingly, in the present invention, the lid 30 does not rotate even if the user tries to forcibly turn the lid 30 as long as the inside of the pressure cooker 1 is combined with the lid rotation locking means as well as under pressure. Will not. Therefore, when the steam pressure remains in the inside of the pressure cooker (1), the lid can not be opened in any case, thereby preventing the lid explosion accident caused by incorrectly opening the lid (30).

As described above, in the present specification and the drawings, there are provided various types of lid rotation locking means, but these are merely examples to help understanding of the lid rotation locking means, and the scope of the present invention is not limited thereto. Also, those skilled in the art can devise various embodiments from the description and drawings of the present specification, and the scope of the present invention includes such a thing and is defined by the following claims.

1: pressure cooker 10: main body
15: fixing piece 19: locking part
20: sealing member 30: lid
35: locking piece 32: pressure regulating valve
33: safety valve 34: lid handle

Claims (3)

In the pressure cooker consisting of a main body, a lid and a sealing member,
A plurality of fixing pieces formed at regular intervals on the outer circumferential edge of the main body and protruding a predetermined length outwardly, a plurality of locking pieces formed at regular intervals on the inner circumference of the lid so as to contact the bottom surface of the fixing piece; Lid rotation locking means consisting of a locking groove formed on the bottom surface of the fixing piece of the main body so that the locking piece can be inserted,
The locking groove formed on the fixing piece includes an insertion portion into which the locking piece of the lid is inserted and a locking portion formed to protrude from the left and right sides so that the locking piece inserted into the insertion portion does not deviate from side to side. The pressure cooker with a lid rotation locking means, characterized in that the fixing piece and the locking groove of the combination to fix the lid so as not to rotate. In the pressure cooker consisting of a main body, a lid and a sealing member,
A plurality of fixing pieces formed at regular intervals on the upper outer periphery of the main body and protruding a predetermined length outward, a plurality of locking pieces formed at regular intervals on the inner circumference of the lid to contact the bottom surface of the fixing piece, and Is formed on the bottom surface and the upper surface of the engaging piece, it is possible to combine in the vertical direction, but includes a lid rotation locking means for preventing rotation in the horizontal direction,
The lid rotation locking means is formed on the upper surface of the locking piece of the lid and the bottom surface of the fixing piece of the main body and a plurality of parallel grooves and a plurality of projections formed on the upper surface of the locking piece of the cap and the fixing piece of the main body A pressure cooker having a lid rotation locking means comprising a rectangular groove and a square protrusion, or any one selected from a rough surface formed on an upper surface of the locking piece of the lid and a bottom surface of the fixing piece of the main body. 3. The method according to claim 1 or 2,
The sealing member is a ring-shaped rubber packing or silicon packing, the upper and lower inner circumference of the ring portion, the upper and lower elastic deformation portion is characterized in that the elastic deformation is formed integrally, the pressure cooker provided with a lid rotation locking means.

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