JP4862869B2 - rice cooker - Google Patents

Description

  The present invention relates to a rice cooker that performs rice cooking, and more particularly to a rice cooker in which a product is made compact.

  In general, this type of rice cooker is known in, for example, Patent Document 1 in which a container can be stored in a main body and rice is cooked. In this patent document 1, the cover body which covers a container is provided in the upper part of a main body, and the cover body arrange | positions the steam discharge mechanism for releasing the water vapor | steam generate | occur | produced from the container at the time of rice cooking, or a container. An inner lid is provided. At this time, an inner lid set (an inner lid body) including a part of these vapor discharge mechanisms and an inner lid is provided.

  The lid has a structure that can be opened and closed with respect to the main body. Further, a part of the steam discharge mechanism corresponds to a pressure adjusting unit that adjusts the pressure. Moreover, a hole is provided. This hole is for releasing water vapor in the container to the outside. And it is the structure which adjusts a pressure.

Further, the lid is provided with a movable frame and packing, and the pressure adjusting unit is operated by the frame.
JP 2000-70129 A

  However, the structure of the conventional rice cooker described above has the following problems.

  There are many cases where cleanable parts are often cleaned when rice cooking or heat insulation is finished and each part of the rice cooker is cleaned. For example, the packing for operating the pressure regulating valve is one of them. The packing is located at the back of the rice cooker. With the lid open, the inner lid set is removed from the lid, and it cannot be cleaned unless a finger is inserted into the recess on the bottom of the lid. In most cases, it is a small part that is cleaned by hooking a cloth or the like on the tip of a finger.

  However, in that case, the part attached to the outer lid cover of the packing may be pushed unintentionally, and the packing and the outer lid cover may be disengaged. This will cause steam leakage into the lid during the next rice cooking. Moreover, in order to avoid such a situation, the troublesomeness which confirms whether the packing is removed every time cleaning is finished arises.

  This problem can be avoided by increasing the mounting part of the packing with respect to the outer lid cover, that is, the mounting part, but this leads to an increase in the dimensions of the product inside the lid and thus the rice cooker. There is a possibility that the place is limited. Further, if the entire mounting portion is enlarged, it becomes difficult to fit the packing into the outer lid cover at the time of assembling the product.

  In order to prevent the packing from coming off, it may be possible to add another part, but this is not preferable because it causes an increase in cost.

  In view of the above problems, an object of the present invention is to provide a rice cooker that can improve the cleanability of the packing without increasing the size of the mounting portion or adding another part.

In the rice cooker according to claim 1 of the present invention, when trying to push the packing at the time of cleaning, a finger or the like touches the protrusion provided on the pressure adjusting unit side, and it becomes difficult to touch the packing, It is possible to suppress a problem that the packing comes off during cleaning. In addition, the protrusion is integrally provided as a part of the lid, so that it is not necessary to add another part, and the manufacturing cost can be reduced. Furthermore, since it is not necessary to enlarge the mounting portion, the product can be made compact.

In the rice cooker according to claim 2 of the present invention, one of the recesses in the mounting portion is larger than the other of the recesses, and the resistance with the lid is increased at this portion, so the packing was pushed from the pressure adjusting unit side. Occasionally, one of the recesses prevents the packing from coming off from the lid, and the problem that the packing is removed during cleaning can be more effectively suppressed by the difference in the size of the recesses.

In the rice cooker according to claim 3 of the present invention, the other of the recesses in the mounting portion is larger than one of the recesses, and the resistance to the lid is increased in this portion, so the packing was pulled to the pressure adjusting unit side. Sometimes, the other side of the recess prevents the packing from coming off from the lid, and the problem that the packing is removed during cleaning can be more effectively suppressed by the difference in the diameter of the recess.

In the rice cooker according to claim 4 of the present invention, when trying to push the packing during cleaning , the wall portion provided on the lid around the concave portion is also formed flush with a finger or the like on that portion. Since it becomes easy to touch, it becomes difficult to touch a packing etc. with a finger | toe directly and the malfunction which a packing removes at the time of cleaning can further be suppressed.

In the rice cooker according to claim 5 of the present invention, since the drive source of the frame is a solenoid, the pressure adjusting unit provided on the inner lid body can be moved to a desired position depending on whether or not the solenoid is energized. it can.

In the rice cooker according to claim 6 of the present invention, when the lid is cleaned, the solenoid is normally not energized. However, in this state, the stopper portion of the frame is in contact with an arbitrary portion of the mounting portion. Even if it is pulled, it becomes difficult for the packing to come off from the lid, and the cleanability is further improved.

According to the rice cooker in Claim 1 of this invention, the cleaning property with respect to packing can be improved, without enlarging an attaching part or adding another component.

According to the rice cooker in Claim 2 of this invention, the malfunction which a packing remove | deviates at the time of cleaning can be suppressed more effectively by the difference in a concave shape.

According to the rice cooker in Claim 3 of this invention, the malfunction which a packing remove | deviates at the time of cleaning can be suppressed more effectively by the difference in a concave shape.

According to the rice cooker in claim 4 of the present invention, the problem that the packing may come off during cleaning can be further suppressed by the wall portion that is substantially flush with the concave one.

According to the rice cooker according to claim 5 of the present invention, the pressure adjusting unit can be moved to a desired position by energizing or de-energizing the solenoid.

According to the rice cooker in claim 6 of the present invention, even if the packing is pulled, it is difficult to remove the packing from the lid.

  Hereinafter, preferred embodiments of a rice cooker according to the present invention will be described with reference to the accompanying drawings.

  First, based on FIG. 1, the structure of the rice cooker which is a reference example of this invention is demonstrated. In the figure, reference numeral 1 denotes a main body that forms the outline of a rice cooker. This main body 1 is formed by an upper frame 2 that constitutes an upper surface and an upper side surface thereof, and a substantially cylindrical outer frame 3 that constitutes a side surface. A bottom plate 4 that covers the bottom opening of the frame 3 is provided. The upper frame 2 and the bottom plate 4 are formed of a synthetic resin such as PP (polypropylene), while the outer frame 3 is formed of a metal member such as stainless steel, for example, in order to improve cleanability and appearance quality. . Moreover, it is provided covering the bottom opening of the substantially cylindrical pan accommodating portion 6 formed integrally from the inner peripheral portion of the upper surface of the upper frame 2 and the pan accommodating portion 6, such as PET (polyethylene terephthalate). The inner frame 8 formed of a synthetic resin forms a pan container 9 made of a nonmagnetic material and having a bottomed cylindrical shape for accommodating a pan 11 described later.

  In the pot housing 9, a bottomed cylindrical pot 11 for storing a rice to be cooked such as rice or water is detachably accommodated. This pan 11 is a pan body 12 mainly made of aluminum with good thermal conductivity, and a heating element 13 composed of a magnetic metal plate such as ferritic stainless steel joined from the lower side to the bottom of the outer surface of the pan body 12. It consists of. The reason why the heating element 13 is not provided from the center to the top of the side surface of the pan 11 is to reduce the weight of the pan 11. An annular flange portion 14 is formed around the upper end of the pan 11 so as to extend to the outer periphery thereof. In addition, it has the structure which does not provide a heating means in the outer periphery of the pan accommodating part 6. FIG.

  The inner frame 8 is positioned to face the heating element 13 of the pan 11, but the bottom part of the pot 11, particularly the bottom part, is electromagnetically placed on the lower side and bottom part of the outer surface of the inner frame 8 facing the heating element 13. A heating coil 16 is provided as a heating means for induction heating. When a high-frequency current is supplied to the heating coil 16, the heating element 13 of the pan 11 is heated by the alternating magnetic field generated from the heating coil 16, and the cooked rice such as water and rice in the pan 11 and the pan 11 is heated. It has become so.

  In addition, a temperature sensor 21 serving as a pan temperature detecting means is disposed in the center of the bottom of the inner frame 8 so as to elastically contact the outer surface of the bottom of the pan 11, and detects the temperature of the pan 11. The heating temperature of the bottom of the pan 11 by 16 is mainly controlled.

  A cord heater 26 for heating the upper part of the side surface of the pan 11, in particular, the flange portion 14, is arranged in an annular shape at the upper end of the pan housing 9, located below the flange portion 14 of the pan 11. . The cord heater 26 is composed of an electric heater, and is held on a heater ring 27 as a heat dissipation suppressing member mounted so as to be placed on the upper end of the pot housing 9 and covers the cord heater 26 from above. In this way, a flange heater is configured by including the metal plate 29 attached to the heater ring 27 and having both a fixing metal member made of, for example, an aluminum plate having excellent heat conductivity and a heat radiating portion. The metal plate 29 is located opposite to the gap between the rice cooker body 1 and the lid 31. Then, the lower surface of the flange portion 14 of the pan 11 is placed on the upper surface of the metal plate 29, whereby the pan 11 is accommodated in the pan accommodating body 9 while being hung on the upper frame 2 of the main body 1. It is like that. Therefore, there is almost no gap between the pan 11 and the upper end of the pan housing 9 in which the pan 11 is housed. Moreover, the flange portion 14 of the pan 11 has an outer shape that is equal to or greater than the size of the cord heater 26, so that the cord heater 26 is covered with the flange portion 14 of the pan 11 from above. . However, although not shown in the drawing, the handle portion (flange portion 14) of the pan 11 is made non-contact, and by partially forming a gap, when cooking rice with water attached to the outer surface of the pan 11, Steam is discharged from the gap.

  The lid 31 includes, for example, a plastic outer lid 32 that forms an upper shell of the lid, a three-dimensional metal lid 33 that covers the upper surface of the outer lid 32, and a heat dissipation that forms a lower surface that is the inner surface of the lid 31. The main component is a plate 34 and an outer lid cover 35 serving as a lid base material that combines the outer lid 32 and the heat radiating plate 34 to form the skeleton of the lid 31. The heat radiating plate 34 provided on the outer lid cover 35 is made of metal, and is made of, for example, a material obtained by anodizing stainless steel or aluminum. A lid heater 36 as a lid heating means is provided on the upper surface of the heat radiating plate 34 inside the lid 31. The lid heater 36 may be an electric heating heater such as a cord heater or a heating coil by electromagnetic induction heating.

  A hinge portion 38 connected to the lid 31 is provided behind the upper frame 2 constituting the main body 1. The hinge portion 38 is provided with a pair of holes 39 in the left-right direction when viewed from the front of the rice cooker, and a hinge spring 40 formed of a torsion coil spring or the like is accommodated therein. On the other hand, an outer lid cover hinge hole (not shown) as a hinge receiving portion is also provided behind the outer lid cover 35 so as to face the hole 39 provided in the hinge portion 38. By inserting a rod-shaped hinge shaft 41 in common with the hinge hole and the hole 39 of the hinge portion 38, the main body 1 and the lid 31 are pivotally supported with the hinge shaft 41 as a fulcrum. Further, one end and the other end of the hinge spring 40 are hooked on the outer cover cover 35 and the outer frame 2, respectively, so that the cover body 31 is always urged in the opening direction.

  A clamp 44 as a lid clamp part is provided in front of the outer cover cover 35 at a position substantially opposite to the hinge receiving part provided in the outer cover cover 35. As shown in FIG. 2, the clamp 44 is pivotally supported with respect to the outer lid cover 35 around a clamp shaft 45 provided inside the lid 31. Note that the axis of the clamp shaft 45 is disposed substantially along the horizontal left-right direction of the lid 31. On the front upper surface of the lid 31, a lid opening button 46 is disposed in an exposed state, and a base end portion 44 </ b> A of the clamp 44 is disposed below the lid opening button 46. The lid 31 is provided with clamp urging means (not shown) such as a spring for urging the base end portion 44A of the clamp 44 toward the lid opening button 46, whereby the lid opening button is provided. A force acts to constantly push 46 upward.

  In addition to the base end portion 44 </ b> A that contacts the lid opening button 46, the clamp 44 has a drooping portion 44 </ b> B that protrudes downward from a clamping hole 48 on the lower surface of the outer lid cover 35, and a substantial distal end portion of the clamp 44. It corresponds to an engaging portion 44C extending from the lower end of the hanging portion 44B to the inside of the main body 1 (see FIGS. 2 and 3). The hanging portion 44B and the engaging portion 44C are provided on the lower side of the clamp 44 and are provided in a pair on the left and right. A clamp shaft 45 serving as a rotation center of the clamp 44 is disposed along the upper end of the hanging portion 44B, and the engaging portion 44C is swung in the front-rear direction of the main body 1.

  On the other hand, a clamp receiver (not shown) as a main body clamp portion is disposed in front of the upper frame 2 and is located on the substantially opposite side of the hinge portion 38 provided on the upper frame 2. Is closed to the main body 1 side, the clamp 44 rotates around the clamp shaft 45 and engages with the clamp receiver, thereby holding the lid 31 in the closed state with respect to the main body 1. Yes.

  Reference numeral 55 denotes an inner lid assembly as an inner lid provided on the outer side, ie, the lower side of the heat radiating plate. The inner lid assembly 55 has a disk shape that is substantially the same diameter as the upper opening of the pan 11 and seals between the pan 11 and the inner lid 56 with a metallic inner lid 56 anodized with stainless steel or aluminum. In order to achieve this, a lid packing 57 as a seal member made of an elastic member such as silicone rubber or fluorine rubber, provided around the outer periphery of the inner lid 56, and a pressure adjusting unit 58 for adjusting the internal pressure of the inner hook, It has. When the lid 31 is closed (when the lid is closed), the ring-shaped lid packing 57 abuts against the upper surface of the flange portion 14 of the pan 11 and closes the gap between the pan 11 and the inner lid 56. The steam generated from the pan 11 is sealed. In addition, a hook portion (not shown) that applies the elastic force of the clamp urging means to the clamp 44 only when the inner lid assembly 55 is attached to the lid 31 is provided on the outer peripheral portion of the inner lid 56. The formed packing base 59 is fixed, and is sandwiched between the packing base 59 and the inner lid 56, and the lid packing 57 is fixed. As a result, the inner lid 56 and the lid packing 57 are integrated by the packing base 59, and the inner lid assembly 55 is detachably provided from the lower surface of the lid 31. It becomes possible to wash.

  The heat radiating plate 34 has a thermistor-type lid temperature sensor 61 (FIG. 6) for controlling the temperature of the inner lid 56 by the lid heater 51 as lid temperature detecting means for detecting the temperature of the inner lid 56 of the lid 31 in particular. Reference) is provided. Further, a steam port 62 detachable from the upper surface side of the lid body 31 is provided in a portion closer to the upper surface rear side of the lid body 31. The steam port 62 and the pressure adjusting unit 58 communicate with each other inside the lid 31, and a steam discharge mechanism for discharging the steam generated in the pan 11 to the outside by the steam port 62 and the pressure adjusting unit 58. Is formed.

  Next, the configuration of the pressure adjusting unit 58 and its surroundings will be described with reference to FIGS. The pressure adjusting unit 58 includes a pressure adjusting valve 65 for adjusting pressure, a pressure adjusting valve holder 66 that holds the pressure adjusting valve 65, and a dome-shaped pressure adjusting valve cover 67 that covers the pressure adjusting valve 65. The pressure regulating valve 65 is a material excellent in corrosion resistance and may be a part having a certain weight, and may be a ball made of austenitic stainless steel, for example. The pressure regulating valve holder 66 is disposed below the pressure regulating valve 65 and a pedestal 69 on which the spherical pressure regulating valve 65 is placed. The pressure regulating valve holder 66 communicates with the pan 11 and serves as a first communication hole for exhausting steam in the pan 11. The communication hole 70 is provided. The communication hole 70 is for communicating the pan 11 and the inner lid 56, and the steam passing through the communication hole 70 is discharged to the outside from the steam port 62. The pressure regulating valve 65 is placed on the pedestal 69 so as to block the communication hole 70, and the pressure in the pan 11 is adjusted by the opening area of the communication hole 70 and the weight of the pressure regulating valve 65. can do.

  An insertion hole 72 through which the pedestal 69 of the pressure regulating valve holder 66 can be inserted is formed at an appropriate position of the inner lid 56, and a flange having a diameter larger than that of the pedestal 69 is formed below the pedestal 69. Part 73 is formed. Thus, when the pressure regulating valve holder 66 is inserted from below toward the insertion hole 72 of the inner lid 56, the flange portion 73 comes into contact with the lower surface of the peripheral portion of the insertion hole 72. Then, the pressure regulating valve holder 66 is inserted into the insertion hole 72 of the inner lid 56 and the pressure regulating valve 65 is held by the pressure regulating valve holder 66 in a state where the pressure regulating valve holder 66 is put on the inner lid 56. The pressure regulating unit 58 is assembled. At this time, the pressure regulating valve holder 66 and the pressure regulating valve cover 67 may be attached and fixed by claw fitting, or may be attached and fixed by a fastening member such as a screw or a rivet. In the present reference example, since the peripheral portion of the insertion hole 72 of the inner lid 56 is sandwiched between the pressure regulating valve holder 66 and the pressure regulating valve cover 67, a structure in which the insertion hole 72 is not exposed can be achieved.

  The pressure regulating valve cover 67 is for restricting the movement range of the pressure regulating valve 65, and is provided with a plurality of holes (not shown) for guiding the steam discharged from the communication hole 70 to the steam port 62. Further, a pressure regulating valve filter 74 that covers the lower opening of the pressure regulating valve holder 66 is provided below the pressure regulating valve holder 66. The pressure regulating valve filter 74 is provided with a plurality of holes corresponding to the second communication holes, from which steam enters the pressure regulating unit 58.

  When the pressure inside the pan 11 is increased to an abnormal pressure that is equal to or higher than the set value due to some other factor, the inner lid assembly 55 pushes up the valve body 75 against the spring and opens the hole 76 to open the pan 11. A safety valve 77 is provided to lower the internal pressure. The pressure adjusting unit 58 and the safety valve 77 are provided facing the inlet side of the steam port 62 when the inner lid 56 is attached to the lower side of the outer lid cover 35.

  A solenoid 78 is provided inside the lid 31 and moves the pressure regulating valve 65 to adjust the sealing degree of the lid 31, that is, the internal pressure of the pan 11. In addition, a pressure adjusting frame 79 that can be moved by a solenoid 78 and a flexible pressure adjusting packing 80 that holds the inside of the lid 31 in a watertight state are provided in the outer lid cover 35, which is located inside the lid 31. Provided. The solenoid 78 and the pressure adjusting frame 79 are accommodated and arranged in a pressure regulating accommodating portion 81 formed inside the lid 31 by the outer lid cover 35.

  The pressure adjustment frame 79 is formed by integrally forming a pressure adjustment operation portion 82 as an operation portion protruding toward the pressure adjustment valve 65 and a frame portion 83 provided so as to surround the solenoid 78. The part 82 is disposed so as to face the side opening of the pressure regulating valve cover 67 constituting the pressure regulating part 58. Further, a mounting portion 85 having a concave cross section is provided at the base end of the pressure regulating packing 80 so as to be fitted to the peripheral edge of the mounting hole 84 provided in the outer lid cover 35. The mounting portion 85 has an annular shape, and a pressure adjusting frame 79 that is movable is disposed inside the mounting portion 85. A movable portion 86 that directly contacts the pressure regulating valve 65 and operates the pressure regulating valve 65 is integrally formed at the tip of the pressure regulating packing 80. The movable part 86 is formed in a cap shape so that the pressure adjusting operation part 82 of the pressure adjusting frame 79 can be easily inserted and attached, and a connecting part integrally connecting the mounting part 85 and the movable part 86 87 is formed thinner than other parts to provide sufficient flexibility, so that the movable portion 86 is projected and retracted toward the pressure regulating valve 65 together with the pressure regulating frame 79.

  The pressure adjusting frame 79 is located at the base end portion of the pressure adjusting operation portion 82, and a connecting portion 88 with the frame portion 83 is formed. The connecting portion 88 is larger in diameter than the tip end portion of the pressure adjusting operation portion 82 to which the movable portion 86 is attached, but at least in anticipation of dimensional errors of the pressure adjusting frame 79 and the pressure adjusting packing 80, the pressure adjusting frame 79 In all positions where the pressure adjustment gasket 80 is movable, the outer surface of the connecting portion 88 does not interfere with the inner diameter of the mounting portion 85 of the pressure regulating packing 80, and the periphery of the mounting portion 85 of the pressure regulating packing 80 is pushed with a finger during cleaning. In this case, the mounting portion 85 is formed so as to have a small diameter with a predetermined gap 90 with respect to the inner diameter of the mounting portion 85 so that the mounting portion 85 contacts the outer surface of the connecting portion 88 before being detached from the outer lid cover 35. The

The connecting portion 88 of the pressure adjusting frame 79 is further provided with ribs 91 that are a plurality of radially protruding portions at a portion near the tip of the pressure adjusting operation portion 82. The rib 91 is disposed so as to form a predetermined gap 92 between the rib 91 and the inner diameter of the mounting portion 85 and to have a smaller diameter than the inner diameter of the mounting portion 85. Again, if the pressure adjustment frame 79 does not come into contact with the inner diameter of the mounting portion 85 of the pressure regulating packing 80 and interfere with it, and the area around the connecting portion 87 of the pressure regulating packing 80 is pushed with a finger during cleaning, the mounting portion It is important to provide a predetermined gap 92 so that the connecting portion 87 contacts the outer surface of the connecting portion 88 before the 85 is removed from the outer lid cover 35, and a boss or the like may be used in addition to the rib 91. . Further, the shape of the connecting portion 88 itself may be used instead of the protruding shape.
In this reference example, when the solenoid 78 is not energized, the pressure adjustment frame 79 is held in the advanced position, and the pressure adjustment valve 65 is retracted from the communication hole 70 while the pressure adjustment frame 79 is retracted while the solenoid 78 is energized. The pressure valve 65 is caused to roll into the communication hole 70 by its own weight, and pressure is introduced into the pan 11. That is, FIGS. 1, 2 and 4 show the non-energized state of the solenoid 78, and FIG. 3 shows the energized state of the solenoid 78. As a driving source for the pressure adjusting frame 79, for example, a stepping motor or the like may be used in addition to the solenoid 78 as in the reference example.

  The mounting portion 85 of the pressure regulating packing 80 has a concave first flange piece 96 formed opposite to the pressure regulating portion 58, and a concave second flange piece 97. It is formed opposite to the pressure adjusting frame 79. The two flange pieces 96 and 97 sandwich the peripheral edge of the mounting hole 84 from both sides, so that the pressure regulating packing 80 is fitted to the outer lid cover 35 and the lid body 31. Further, the frame portion 83 of the pressure adjusting frame 79 is provided with a stopper portion 98 that contacts the second flange piece 97 constituting the attachment portion 85 when the solenoid 78 is not energized. As shown in FIG. 4, the stopper portion 98 uses the wall portion 99 around the mounting hole 84 formed by the outer lid cover 35 when the pressure adjusting frame 79 is in the advanced position, Although the flange piece 97 is sandwiched, preferably, if the second flange piece 97 is disposed so as to be pressed, the mounting portion 85 is less likely to come off the outer lid cover 35. Further, the stopper portion 98 here may be in contact with the mounting portion 85 other than the first flange piece 97 as long as it is formed integrally with the pressure adjusting frame 79 in order to avoid an increase in the number of parts.

  The pressure adjusting frame 79 is operated by a solenoid 78. The solenoid 78 includes a plunger (not shown), and the plunger is attached in a state of being hooked on the pressure adjusting frame 79. A spring (not shown) is provided as an elastic means via a plunger between the solenoid 78 and the pressure adjustment frame 79, and when the solenoid 78 is de-energized, the biasing force of this spring is used. The pressure adjusting frame 79 is advanced to the pressure adjusting unit 58 side. When the solenoid 78 is energized, the plunger is retracted.

  Then, with the inner lid assembly 55 attached to the outer lid cover 35, when the solenoid 78 is not energized, the pressure regulating frame 79 advances toward the pressure regulating section 58, so that the pressure regulating valve 65 of the inner lid assembly 55 is Pushing forward, the communication hole 70 formed below the pressure regulating valve holder 66 is opened. On the other hand, when the solenoid 78 is energized, the plunger is retracted, the pressure adjusting frame 79 is retracted, and the pressure adjusting valve 65 closes the communication hole 70 of the pressure adjusting valve holder 66.

  Returning to FIG. 1 again, an operation panel 101 is provided at the front of the main body 1. Inside this operation panel 101 is an LCD 102 that displays the time and the selected menu, other LEDs that are not shown, a LED that displays the current process, a switch for starting rice cooking, and selecting a menu, etc. Is disposed. The operation panel 101 corresponding to the operation unit displays button names and the like, and prevents dust and water from adhering to the control means which is an electronic component. The operation panel 101 may be provided on the front side of the lid 31.

  111 is a heating control means provided in the front inside the main body 1. The heating control unit 111 includes a heating element (not shown) for driving the heating coil 16, which is a heating unit, on a substrate. The element that drives the heating coil 16 is heated along with the oscillation of the heating coil 16, but has a use condition temperature that guarantees the operating state, and therefore needs to be used at a certain temperature or lower. For this purpose, the element that drives the heating coil 16 is thermally connected to a fin-like radiator 112 made of a material having good thermal conductivity such as aluminum and emits from a cooling fan 113 that is a cooling means. The element is driven within the operating temperature by applying wind to the radiator 112 to remove heat.

  The cooling fan 113 is disposed below or on the side of the radiator 112 attached to the heating control unit 111. In addition, a hole for discharging the air which is emitted from the cooling fan 113 and deprived of heat from the radiator 112 attached to the heating control means 111 to the outside of the main body 1 is formed in the bottom or side of the main body 1. A plurality of (not shown) are provided. The heating control means 111 is housed inside the product, that is, in the main body 1, but may be disposed at any position on the outer periphery of the pan 11. Moreover, you may arrange | position the hole provided in the bottom part or side part of the main body 1 in any position. However, in recent years, there is a demand for miniaturization of products, and the heating control means 111 and the cooling fan 113 and the hole 114 for discharging warm air are arranged at substantially opposite positions across the pan 11. Is preferred.

  A cord reel 116 for winding a power plug (not shown) is provided inside the main body 1. Reference numeral 117 denotes a transportable rotatable handle provided so as to straddle both sides of the main body 1.

  Next, the control system will be described with reference to FIG. In the figure, 111 is the heating control means described above, which receives each temperature information from the pan temperature sensor 21 and the lid temperature sensor 61, and heats the bottom of the pan 11 during cooking and keeping warm. The cord heater 26 that heats the side portion of the pan 11 and the lid heater 36 that heats the lid 31 are respectively controlled. In particular, the heating control means 111 of this reference example mainly controls the heating coil 16 based on the temperature detected by the pan temperature sensor 21 to control the temperature of the bottom of the pan 11 and based on the temperature detected by the lid temperature sensor 52. Then, the lid heater 26 is controlled so that the temperature of the heat radiating plate 34 and the inner lid 56 is controlled. The heating control means 111 is provided with cooking control means for controlling cooking heating of the cooking object as a function on the control sequence of the program stored in its own storage means (not shown). Rice cooking control means 120 that cooks and heats the food to be cooked in the pan 11 and heat retention control means 121 that heats and heats the rice in the pot 11 to a predetermined heat retaining temperature during heat insulation, respectively.

  Reference numeral 122 denotes a heating coil driving unit that incorporates a high-frequency inverter circuit that receives a control signal from the heating control unit 111 and supplies a predetermined high-frequency current to the heating coil 16. Separately from this, the output side of the heating control means 111 receives a control signal from the heating control means 111 and drives the lid heater 36 so as to heat the radiator plate 34 and the inner lid 56. 123, code heater driving means 124 for turning on the code heater 26, and solenoid driving means 125 for turning on or off the solenoid 78 are provided. At the time of cooking by the rice cooking control means 120 and at the time of heat insulation by the heat insulation control means 121, the heating coil 16 heats the bottom of the pan 11 by the temperature detection from the pot temperature sensor 21 and the lid temperature sensor 61, and the code heater 26 The heating is performed on the side surface of the pan 11 and the lid 31 is heated by the lid heater 36. In addition, after the rice cooking by the rice cooking control means 120 is finished and the cooked food in the pan 11 is cooked as rice, it automatically shifts to heat insulation by the heat insulation control means 121, and the temperature detected by the pan temperature sensor 21 is reached. Based on this, by adjusting the heating of the pan 11 by the heating coil 16 and the cord heater 26, the rice is kept at a predetermined temperature (about 70 ° C. to 76 ° C.).

  In particular, supplementary explanation about the heating by the cord heater 26, until the temperature of the rice is lowered from about 100 ° C. to about 73 ° C. after the rice cooking, and when the temperature is stable at about 73 ° C., the code heater 26 is heated, Heat is radiated from the metal plate 29 into the space between the lid 31 and the main body 1 to suppress cooling due to intrusion of outside air from the gap, and the flange portion 14 of the pan 11 is heated. In addition, the cord heater 26 also heats the flange portion 14 of the pan 11 during the period when the rice is reheated during heat insulation, so that moisture generated by heating the rice is prevented from condensing on the upper part of the inner surface of the pan 11. ing.

  Next, the effect | action is demonstrated about the said structure. When rice and water that are to be cooked are put into the pan 11 and rice cooking by the rice control means 120 is started, the heating coil 16 and the code heater 26 are used based on the temperature detection of the bottom of the pan 11 by the pan temperature sensor 21. The bottom part and side part of the pan 11 are heated, respectively, and the water temperature in the pan 11 is kept at about 45 to 60 ° C. for 15 to 20 minutes. During this cooking, the solenoid 78 is turned on and the pressure adjusting frame 79 is retracted.

  After that, the pan 11 is heated strongly by the heating coil 16 to boil the cooking object. When the temperature of the bottom of the pan 11 becomes 90 ° C or higher during this boiling heating and the temperature of the lid 31 is stabilized at 90 ° C or higher, it is assumed that the inside of the pan 11 is in a boiling state, and the heating amount is reduced more than before. Shift to continuous boiling heating. During boiling heating, the rice cooking control means 120 turns off the solenoid 78 to hold the pressure adjusting frame 79 in the advanced position, and retracts the pressure adjusting valve 65 from the communication port 70 via the pressure adjusting packing 80. As a result, the pressure adjusting unit 58 is in an open state in which the inside and outside of the pan 11 are communicated without being sealed, and the pan 11 is maintained at substantially atmospheric pressure. Note that the fact that the temperature of the lid 31 described above is stable at 90 ° C. or higher is detected by the rate of temperature increase of the detected temperature from the lid temperature sensor 61. In this boiling detection, the pan temperature sensor 21 and the lid temperature sensor 61 can confirm that both the bottom of the pan 11 and the lid 31 have reached 90 ° C. or more, and the pan 11 has completely boiled. Can be detected accurately.

  Further, when any of the bottom part of the pan 11, the side part of the pan 11 or the lid 31 reaches a detection temperature that is not normally 120 ° C. or higher, the heating control means 111 determines that there is some abnormality and cooks rice. The amount of heating in the heating is reduced so that all operations are stopped, or the operation is shifted to the unevenness described later, or the heat is kept to prevent abnormal heating. Conversely, either the bottom of the pan 11 or the lid 31 has reached 90 ° C. or more and a predetermined time (for example, 5 minutes) has passed, but either the bottom of the pan 11 or the lid 31 other than that. When the temperature is lower than 90 ° C, the pan temperature sensor 21 or the lid temperature sensor 61 in the low temperature state determines that the temperature detection accuracy has deteriorated for some reason (dirt, tilt, poor contact, etc.). In the same manner, the amount of heating in rice cooking heating is reduced to a state where all operations are stopped, or the operation is shifted to unevenness, or the heat is kept to cope with this.

  When shifting to continuation of boiling, the rice cooking control means 120 starts lid heating by the lid heater 36. The lid heating here is managed by the temperature detected by the lid temperature sensor 61 so that the temperature of the inner lid 56 becomes 100 to 110 ° C. In addition, when shifting to boiling continuous heating, the rice cooking control means 120 turns the solenoid 78 on and off periodically. In this continuous boiling heating, it is preferable to change the timing of turning on and off the solenoid 78 in accordance with the menu selected by the operation panel 101. Thereby, the sealing degree of the pressure adjusting unit 58 leading to the pan 11 can be changed to an optimum one according to the selected menu. And if the bottom part of the pan 11 raises predetermined temperature, cooking will be detected and it will transfer to unevenness. During unevenness, the lid heater 36 is cut off by temperature control based on the temperature detected by the lid temperature sensor 61 to prevent dew condensation on the inner lid 56, and the temperature is high enough that the rice does not burn (98-100 ° C). The temperature at the bottom of the pan 11 is controlled so that it is maintained. The unevenness is continued for a predetermined time (15 to 20 minutes), and when the unevenness is completed, the operation shifts to heat retention by the heat retention control means 121.

  When the temperature is kept warm, the heating coil 16 heats the bottom and the lower side of the pan 11 and is slightly higher than the temperature of the rice contained in the pan 11, and the lower surface of the lid 31 is heated by the lid heater 36. The temperature of the side of the pan 11 is controlled by the code heater 26 so that the rice does not dry and a large amount of dew does not adhere. The temperature of the rice in the pan 11 is maintained at 70 to 76 ° C. Even when the temperature is kept, the pan temperature sensor 21 and the lid temperature sensor 61 are abnormally high or abnormally low. Detects abnormalities and prevents this abnormal heating.

  In addition, the sealing degree of the pressure adjusting unit 58 in each process from steam unevenness to heat insulation varies depending on the selected cooking course, but when it reaches a predetermined time before the end of substantial rice cooking, the solenoid 78 is turned off to reduce the sealing degree of the pressure adjusting unit 58, and the pressure is reduced to such an extent that the lid 31 can be opened at the end of rice cooking.

  When cleaning the pressure regulating packing 80 after the completion of rice cooking or heat insulation, the inner lid assembly 55 is removed from the lower surface of the lid 31 with the lid 31 opened. Since the solenoid 78 is in an off state at the time of cleaning, the pressure adjusting frame 79 and the pressure adjusting packing 80 are in the advanced position. Here, during cleaning, even if a finger or the like is caught on the flange piece 96 on the pressure adjustment portion 58 side that constitutes the attachment portion 85 of the pressure adjustment packing 80 and the pressure adjustment packing 80 is pushed inward, the attachment portion 85 A connecting portion 88 of the pressure adjusting frame 79 having a predetermined gap 90 is located inwardly of this, and a mounting portion 85 of the pressure adjusting packing 80 is brought into contact with the connecting portion 88 to prevent further deformation. . Therefore, the attachment portion 85 of the pressure regulating packing 80 is difficult to come off from the wall portion 99 of the outer lid cover 35.

  Further, even if a finger or the like comes into contact with the connecting portion 87 slightly closer to the center than the mounting portion 85 and tries to push the pressure regulating packing 80 from there, a predetermined gap 92 is formed inside the connecting portion 87. The rib 91 of the pressure regulating frame 79 is located, and the connecting portion 87 of the pressure regulating packing 80 is brought into contact with the rib 91 to prevent further deformation of the pressure regulating packing 80. Therefore, it is possible to prevent the attachment portion 85 of the pressure regulating packing 80 from being detached from the outer lid cover 35 even when trying to push not only the attachment portion 85 but also the connecting portion 87.

  Further, when the solenoid 78 is not energized, the stopper portion 98 formed on the pressure adjusting frame 79 abuts on the second flange piece 97 constituting the mounting portion 85 of the pressure adjusting packing 80, and this second flange piece 97. Is pressed toward the wall 99 of the outer lid cover 35. In this way, even if a force that pulls the pressure regulating packing 80 is applied during cleaning, the second flange piece 97 of the mounting portion 85 is sandwiched between the stopper portion 98 and the wall portion 99 of the outer lid cover 35. Thus, it is possible to reliably prevent the pressure regulating packing 80 from being detached from the outer lid cover 35.

  As described above, in this reference example, the main body 1 that houses the pot 11 as a container, the lid 31 that covers the upper portion of the main body 1, and the upper opening of the pan 11 are directly covered and attached to the lower surface of the lid 31. An inner lid assembly 55 as an inner lid body provided freely, the inner lid assembly 55 is provided with at least a pressure adjusting unit 58 for adjusting the pressure in the pan 11, and the lid body 31 has, for example, A pressure regulating frame 79 as a frame movable in the horizontal direction and a pressure regulating packing 80 as a flexible packing are provided, and a pressure regulating valve 65 of a pressure regulating unit 58 provided in the inner lid assembly 55 is provided. In the rice cooker configured to be operated by the pressure regulating frame 79 via the pressure regulating packing 80, the pressure regulating packing 80 is smaller than the pressure regulating packing 80 and has a predetermined gap 90. The connecting portion 88 of the pressure adjustment operation portion 82 as an operation portion that restricts deformation of 80 is integrated with the pressure adjustment frame 79. It is provided as one member.

  In this way, the connecting portion 88 of the pressure adjusting operation portion 82 which is smaller than the pressure adjusting packing 80 and has a predetermined gap 90 with the pressure adjusting packing 80 and does not hinder the movement of the pressure adjusting frame 79 is provided. Since it is provided on the pressure adjustment frame 79, when cleaning with a finger or the like inserted into the pressure adjustment packing 80, even if the pressure adjustment packing 80 is unintentionally pressed, the pressure adjustment packing is connected to the connecting portion 88 of the pressure adjustment operation part 82. It is possible to prevent the pressure regulating packing 80 from being further deformed by abutting 80 and to prevent the pressure regulating packing 80 from coming off during cleaning. In addition, the pressure adjusting operation part 82 is provided in the pressure adjusting frame 79 itself, so that it is not necessary to add another part, and the manufacturing cost can be reduced. Further, since it is not necessary to enlarge the mounting portion 85 of the pressure regulating packing 80, the product can be made compact.

  Further, the pressure adjusting packing 80 in the present reference example is provided with an annular mounting portion 85 fitted to the lid 31 and a movable portion 86 to which the pressure adjusting operation portion 82 is attached, which is smaller than the inner diameter of the mounting portion 85, A connecting portion 88 of the pressure adjusting operation portion 82 is provided on the pressure adjusting frame 79 with an inner diameter of the mounting portion 85 and a predetermined gap 90.

  In this case, in particular, the pressure adjusting packing 80 is smaller than, for example, the inner diameter of the mounting portion 85, and has a predetermined gap 90 with the inner diameter of the mounting portion 85 so that the pressure adjusting frame 79 does not interfere with the movement. Since the connecting portion 88 of the operation portion 82 is provided in the pressure adjusting frame 79, even if the pressure adjusting packing 80 is unintentionally pushed during cleaning, the pressure adjusting packing is a portion that fits with the outer lid cover 35 of the lid 31 in particular. The attachment portion 85 of 80 can contact the connecting portion 88 of the pressure adjustment operation portion 82 provided on the pressure adjustment frame 79, and the attachment portion 85 can be prevented from further deforming. Therefore, it is possible to more effectively suppress the problem that the pressure regulating packing 80 comes off during cleaning.

  Further, the pressure adjusting operation portion 82 in this reference example has, for example, an inner diameter of the mounting portion 85 and a predetermined gap 92 at a location different from the portion where the movable portion 86 of the pressure adjusting packing 80 is mounted (location other than the tip portion). Thus, a plurality of ribs 91 are provided as convex portions that restrict deformation of the pressure regulating packing 80.

  In this case, a plurality of ribs 91 having a smaller diameter than the mounting portion 85 of the pressure regulating packing 80 and having a predetermined gap 92 and an inner diameter of the mounting portion 85 so as not to hinder the movement of the pressure regulating frame 79 are provided. Since the pressure adjusting operation part 82 of the pressure adjusting frame 79 is provided, even if the pressure adjusting packing 80 is unintentionally pressed during cleaning, the pressure adjusting packing 80 is attached to the rib 91 provided in the pressure adjusting operation part 82 of the pressure adjusting frame 79. Can prevent the pressure regulating packing 80 from further deforming, and the rib 91 can more effectively suppress the problem that the pressure regulating packing 80 is detached during cleaning.

  Furthermore, in the present reference example, a solenoid 78 is disposed inside the lid 31 as a drive source for the movable pressure adjusting frame 79. In this case, since the drive source of the pressure adjustment frame 79 is the solenoid 78, the pressure adjustment unit 58 provided in the inner lid assembly 55 can be moved to a desired position depending on whether or not the solenoid 78 is energized. it can.

  Further, the pressure adjusting frame 79 in this reference example is provided with a stopper portion 98 that abuts on the mounting portion 85 when the solenoid 78 is not energized. When the lid 31 is cleaned, the solenoid 78 is normally de-energized. In this state, the stopper portion 98 of the pressure adjusting frame 79 is in contact with, for example, the second flange piece 97 of the mounting portion 85. Even if the packing 80 is pulled, the pressure regulating packing 80 is unlikely to come off from the lid 31 and the cleaning performance is further improved.

  Next, an embodiment related to the present invention will be described with reference to the accompanying drawings. Each of these embodiments is the same as the reference example described above except that the mounting portion 85 of the pressure regulating packing 80 and the structure of the outer lid cover 35 are partially different. A description will be given with reference numerals.

  In the first embodiment shown in FIG. 7, an annular mounting portion 85 fitted to the lid 31 and a movable portion 86 to which the pressure adjusting operation portion 82 is attached are provided on the pressure adjusting packing 80. Although common to the above-described reference example, the mounting portion 85 of the pressure regulating packing 80 is formed on the pressure regulating frame 79 side with one of the concave shapes (first flange piece 96) formed on the pressure regulating portion 58 side. It has a larger diameter than the other concave part (second flange piece 97). This portion is formed as an extension 131 in FIG. If both flange pieces 96 and 97 have a large diameter, workability when the pressure regulating packing 80 is assembled into the outer lid cover 35 is lowered, which is not preferable.

  As described above, in the first embodiment, in order to fit the outer lid cover 35 of the lid 31, the annular mounting portion 85 having a concave cross section is provided in the pressure regulating packing 80. In the mounting portion 85, the first flange piece 96 has a larger diameter than the second flange piece 97, and the resistance with the lid 31 is increased at this portion. When pressed from the side 58, the first flange piece 96, which is one of the concave shapes, prevents the pressure regulating packing 80 from coming off from the lid 31 and prevents the pressure regulating packing 80 from coming off during cleaning. it can. In addition, in such a structure, it is not necessary to add another part, and the manufacturing cost can be reduced. Further, since it is not necessary to enlarge the entire mounting portion 85, the product can be made compact.

  Also in the first embodiment, the inner diameter of the mounting portion 85 of the pressure adjusting packing 80 is smaller than the inner diameter of the mounting portion 85 and has a predetermined gap 90, which hinders the movement of the pressure adjusting frame 79. Since the connecting portion 88 of the pressure adjusting operation portion 82 is provided in the pressure adjusting frame 79, even if the pressure adjusting packing 80 is unconsciously pressed during cleaning, the portion that fits with the outer lid cover 35 of the lid 31 in particular. The mounting portion 85 of the pressure regulating packing 80 is in contact with the connecting portion 88 of the pressure regulating operation portion 82 provided on the pressure regulating frame 79, and the mounting portion 85 can be prevented from further deforming. Therefore, the problem that the pressure adjustment packing 80 is detached during cleaning can be more effectively suppressed by the connecting portion 88 of the pressure adjustment operation portion 82.

  Further, the point provided with the rib 91, the point provided with the solenoid 78 as a driving source of the pressure adjusting frame 79, the point provided with the stopper portion 98, and the like are as described in the above reference example.

In the second embodiment shown in FIG. 8, the protrusion 132 is formed in the vicinity of the mounting hole 84 of the outer lid cover 35 constituting the lid 31. The projecting portion 132 is located on the outer side of the concave portion (first flange piece 96) formed on the pressure regulating portion 58 side of the mounting portion 85 so as to surround the entire circumference of the mounting portion 85. The same member as the lid cover 35 is formed to project annularly. The protrusion 132 is provided to prevent a finger from directly touching the pressure-adjusting packing 80 at the time of cleaning or the like, and may have any other shape as long as such a purpose can be achieved.

As described above, in the second embodiment, the lid 31 is provided with the mounting hole 84 for the pressure regulating packing 80, and is fitted into the mounting hole 84 of the lid 31 so that the cross section has a concave shape. An annular mounting portion 85 and a movable portion 86 to which the pressure adjusting operation portion of the pressure adjusting frame 79 is attached are provided in the pressure adjusting packing 80, and the pressure adjusting portion 58 in the vicinity of the mounting hole 84 is provided in the lid body 31. and position on the side, to form a protrusion 132 so as to surround the mounting portion 85.

In this way, when trying to press the pressure adjustment packing 80 during cleaning, a finger or the like hits the protrusion 132 provided on the pressure adjustment portion 58 side, making it difficult to touch the pressure adjustment packing 80, It is possible to suppress a problem that the pressure regulating packing 80 comes off during cleaning. In addition, the protrusion 132 is integrally provided as a part of the component (outer lid cover 35) of the lid 31, so that it is not necessary to add another part and the manufacturing cost can be reduced. Further, since it is not necessary to enlarge the mounting portion 85, the product can be made compact.

  Further, in the second embodiment shown in FIG. 8, the first flange piece 96 of the mounting portion 85 has a larger diameter than the second flange piece 97, as in the first embodiment. Since the resistance with the lid 31 is increased at this portion, when the pressure regulating packing 80 is pushed from the pressure regulating portion 58 side, the first flange piece 96 which is one of the concave portions is the pressure regulating packing from the lid 31. It is possible to more effectively suppress the problem that the pressure regulating packing 80 is detached at the time of cleaning by preventing the detachment of the 80 by the difference in the size (diameter) of the recesses.

  Further, also in the second embodiment, the point provided with the rib 91, the point provided with the solenoid 78 as a driving source of the pressure adjusting frame 79, the point provided with the stopper portion 98, etc. This is the same as described in.

  In the third embodiment shown in FIG. 9, the mounting portion 85 of the pressure regulating packing 80 is formed on the pressure regulating portion 58 side with the other of the recesses (second flange piece 97) formed on the pressure regulating frame 79 side. It has a larger diameter than one of the recesses (first flange piece 96). This portion is formed as an extension 133 in FIG. If both flange pieces 96 and 97 have a large diameter, workability when the pressure regulating packing 80 is assembled into the outer lid cover 35 is lowered, which is not preferable.

  Further, also in the third embodiment, the protrusion 132 as shown in the second embodiment is formed in the vicinity of the mounting hole 94 of the outer lid cover 35 constituting the lid body 31, and cleaning is performed. This prevents the pressure regulating packing 80 from coming off at times.

  In the third embodiment, in order to fit the outer lid cover 35 of the lid 31, an annular mounting portion 85 having a concave portion whose cross section is concave is provided in the pressure regulating packing 80. In the mounting portion 85, since the second flange piece 97 has a larger diameter than the first flange piece 96, and the resistance with the lid 31 is increased at this portion, the pressure adjustment packing 80 is adjusted. When pulled to the pressure part 58 side, the second flange piece 97, which is the other of the recesses, prevents the pressure adjustment packing 80 from coming off from the lid 31 and the pressure adjustment packing 80 is removed during cleaning. It can suppress more effectively by the difference in the diameter of a recessed part.

  Further, also in the third embodiment, the point provided with the rib 91, the point provided with the solenoid 78 as the drive source of the pressure adjusting frame 79, the point provided with the stopper portion 98, etc. This is the same as described in.

  FIG. 10 shows a fourth embodiment. Here, the extension portion 133 is formed in the same manner as the third embodiment, and the first flange piece 96 and the surface are seen from the pressure regulating portion 58 side. A step portion 134 with which the first flange piece 96 abuts is provided on the wall portion 99 of the outer lid cover 35 so that a single surface is formed around the first flange piece 96.

As described above, the mounting portion 85 of the pressure regulating packing 80 in the fourth embodiment has the lid 31 in which the surface of the first flange piece 96, which is one of the concave portions formed on the pressure regulating portion 58 side, is in the periphery thereof. It is formed so as to be substantially flush with the surface of the wall portion 99 provided on the surface. In this way, when the pressure-adjusting packing is pressed during cleaning, the periphery of the first flange piece 96 is also flush with the finger, and the like is easy to touch. It is difficult to directly touch the pressure packing 80 with a finger or the like, and the problem that the pressure adjustment packing 80 is detached during cleaning can be further suppressed.

  Further, also in the fourth embodiment, the point provided with the rib 91, the point provided with the solenoid 78 as a drive source of the pressure adjusting frame 79, the point provided with the stopper portion 98, etc. This is the same as described in.

  In addition, this invention is not limited to the said Example, It can change in the range which does not deviate from the meaning of this invention. For example, you may combine suitably what was shown in the said Example and each reference example.

It is whole sectional drawing of the rice cooker in the reference example of this invention. FIG. 3 is an enlarged cross-sectional view of the main part when the solenoid is not energized. It is an enlarged sectional view of the principal part in the energization state of a solenoid same as the above. FIG. 3 is an enlarged cross-sectional view of FIG. It is a perspective view of a solenoid and its periphery same as the above. It is a block diagram which shows an electrical structure same as the above. It is sectional drawing of the principal part which shows another 1st Example. It is sectional drawing of the principal part which shows a 2nd Example. It is sectional drawing of the principal part which shows a 3rd Example. It is sectional drawing of the principal part which shows a 4th Example.

1 body
11 Pot (container)
31 Lid
55 Inner lid assembly (inner lid)
58 Pressure regulator
79 Pressure control frame
80 Pressure regulating packing (packing)
85 Mounting part
86 Moving parts
96 1st flange piece (one of the recesses)
97 Second flange piece (the other of the recesses)
99 Wall
132 Protrusion

Claims (6)

A main body that accommodates the container, a lid that covers an upper portion of the main body, and an inner lid that is provided so as to cover the container;
A pressure adjusting part for adjusting the pressure is provided in the inner lid,
A movable frame and a packing are provided on the lid,
In rice cooker the pressure adjusting section is configured to be operated by said frame,
Provide a hole for attaching the packing to the lid,
The packing is provided with a mounting portion having a recess that fits into the lid and a movable portion,
A rice cooker characterized in that the lid body is located on the pressure regulating unit side in the vicinity of the hole , and a protrusion is formed around the mounting portion. The mounting portion, one of the formed the recess, cooker according to claim 1, wherein a greater than the other 2. The rice cooker according to claim 1, wherein the attachment portion has the other recessed portion formed larger than the one . The mounting portion, one formed was of the concave is cooker according to claim 1, characterized in that it is formed substantially flush with the wall portion provided on the lid. The rice cooker according to any one of claims 1 to 4 , wherein a solenoid is disposed on the lid as a driving source of the frame. The rice cooker according to any one of claims 1 to 5, wherein the frame is provided with a stopper portion that comes into contact with the attachment portion.

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