JP7445129B2 - Cooking device - Google Patents

Description

The present invention relates to a cooking device such as a rice cooker.

In the past, ``a main body part on which a sheet metal is erected at the rear, and a lid part that can be rotated around the upper part of the sheet metal part, and the lid Various rice cookers have been proposed, such as a rice cooker in which a notch is formed on the back of the lid to avoid the sheet metal when the lid is opened (see, for example, Japanese Patent Laid-Open No. 2019-047869). .

Japanese Patent Application Publication No. 2019-047869

Incidentally, in recent years, in order to meet the diverse demands of consumers in the rice cooker market, it has become common for a single cooker manufacturer to release multiple models of a single cooker (i.e., to meet the diverse demands of consumers in the rice cooker market). The production of various types of utensils in small quantities is progressing.) As the number of models handled by a single cooker manufacturer increases in this way, the ratio of manufacturing costs to sales for each model increases compared to the era of mass production of small models, putting pressure on the cooker manufacturer's management. There's a problem.

An object of the present invention is to meet the various demands of consumers in the market for rice cookers and cooking appliances having a structure similar to that of rice cookers, and to reduce the ratio of manufacturing costs to sales for each type of cooking appliance as much as possible. It's about suppressing it.

The cooker according to the present invention includes:
an inner container;
A container for accommodating the inner container,
The container is constructed by connecting a flange member located at the uppermost stage, a bottom member located at the lowermost stage, and at least one intermediate member located between the flange member and the bottom member. ,
further comprising a second close member sandwiched between the flange member and the intermediate member,
At least one of the intermediate members has an annular first recess,
a first heating section disposed within the first recess;
further comprising a third close member disposed on the opposite side of the second close member with the first heating section in between,
A first space surrounded by the intermediate member having the first recess, the first heating section, the second close member, and the third close member is sealed.

According to the above configuration, while some of the members constituting the container are common among multiple models, members suitable for each model's container are selected and the container is assembled according to the required characteristics of each model. be able to. Therefore, it is possible to meet the various demands of consumers in the market for rice cookers and cookers having a structure similar to that of rice cookers, and to suppress the ratio of manufacturing costs to sales for each type of cooker as much as possible. . Further, according to the above configuration, for example, in manufacturing a pressure cooker and a non-pressure cooker, only the flange member, which has different magnitudes of stress applied during cooking, is used as a non-common part, and the bottom part, which has almost the same required characteristics, is used as a non-common part. Materials and intermediate members can be shared. In addition, for example, in manufacturing a cooker equipped with an inner container presence/absence detection mechanism and a cooker without an inner container presence/absence detection mechanism, only the bottom member, which differs in the necessity of forming an opening, is used as a non-common part, and the flange, which has almost the same required characteristics, The parts and intermediate members can be made common. Furthermore, for example, in manufacturing a cooker in which the intermediate member has a heat-retaining heater mounting structure and a cooker in which the intermediate member does not have a heat-retaining heater mounting structure, only the middle member is a non-common part, and the required characteristics are almost the same. The flange portion and bottom member can be shared. That is, according to the above configuration, in manufacturing cooking appliances having various characteristics, it is possible to manufacture a container according to the characteristics while using common parts. Further, according to the above configuration, the gap between the flange member and the intermediate member can be closed. Therefore, in this cooking device, it is possible to suppress liquid from leaking to the inside or outside of the container through the gap between the flange member and the intermediate member. Further, according to the above configuration, it is possible to prevent the heat of the first heating section from escaping to the outside of the intermediate member. Therefore, in this cooker, the heat of the first heating section can be efficiently transmitted to the inner container.

The cooker according to the present invention includes:
an inner container;
A container for accommodating the inner container,
The container is constructed by connecting a flange member located at the uppermost stage, a bottom member located at the lowermost stage, and a plurality of intermediate members located between the flange member and the bottom member. Ori,
further comprising at least one fourth close member sandwiched between the at least two intermediate members,
At least one of the intermediate members has an annular second recess,
a second heating section disposed within the second recess;
further comprising a fifth close member disposed on the opposite side of the fourth close member with the second heating section in between,
A second space surrounded by the intermediate member having the second recess, the second heating section, the fourth close member, and the fifth close member is sealed .

According to the above configuration, while some of the members constituting the container are common among multiple models, members suitable for each model's container are selected and the container is assembled according to the required characteristics of each model. be able to. Therefore, it is possible to meet the various demands of consumers in the market for rice cookers and cookers having a structure similar to that of rice cookers, and to suppress the ratio of manufacturing costs to sales for each type of cooker as much as possible. . Further, according to the above configuration, for example, in the manufacture of pressure cookers and non-pressure cookers, only the flange members, which have different magnitudes of stress applied during cooking, are used as non-common parts, and the bottom part, which has almost the same required characteristics, is used as a non-common part. Materials and intermediate members can be shared. In addition, for example, in manufacturing a cooker equipped with an inner container presence/absence detection mechanism and a cooker without an inner container presence/absence detection mechanism, only the bottom member, which requires or not to form an opening, is used as a non-common part, and the flange, which has almost the same required characteristics, is used as a non-common part. The parts and intermediate members can be made common. Furthermore, for example, in manufacturing a cooker in which the intermediate member has a heat-retaining heater mounting structure and a cooker in which the intermediate member does not have a heat-retaining heater mounting structure, only the middle member is a non-common part, and the required characteristics are almost the same. The flange portion and bottom member can be shared. That is, according to the above configuration, in manufacturing cooking appliances having various characteristics, it is possible to manufacture a container according to the characteristics while using common parts. Further, according to the above configuration, it is possible to close the gap between at least two intermediate members. Therefore, in this cooking device, it is possible to suppress liquid from leaking to the inside or outside of the container through the gap between the at least two intermediate members. Further, according to the above configuration, it is possible to prevent the heat of the second heating section from escaping to the outside of the intermediate member. Therefore, in this cooker, the heat of the second heating section can be efficiently transmitted to the inner container.

In the present invention,
further comprising a third heating section disposed below the bottom member;
At least one of the intermediate members has an extending portion extending from a first side portion toward the first side in a plan view,
In a plan view, it is preferable that the third heating section is disposed inside the first end of the extension section.

According to the above configuration, even if the liquid (for example, water) flows down from above the container toward the third heating part, the liquid can be made to flow through the extension part. In other words, this liquid can be dropped outside the third heating section. Therefore, in this cooking device, the third heating section can be protected from the liquid that flows and falls from above the third heating section.

In the present invention,
Preferably, the flange member has a reinforcing portion formed therein.

During pressure cooking in a pressure cooker, a large load may be applied to the flange member. That is, according to the above configuration, it is possible to select a flange member suitable for each pressure cooker that applies different stresses during pressure cooking.

In the present invention,
Preferably, the reinforcing portion includes an upper wall portion, a lower wall portion, and a reinforcing rib portion formed between the upper wall portion and the lower wall portion.

According to the above configuration, the reinforcing portion can be made difficult to deform.

In the present invention,
It is preferable that the reinforcing rib portions extend in a lattice shape or a brace shape.

According to the above configuration, the reinforcing portion can be made more difficult to deform.

FIG. 1 is a perspective view of a rice cooker according to an embodiment of the present invention. 1 is a central vertical cross-sectional view of a rice cooker according to an embodiment of the present invention. 3 is an enlarged view of the enclosed portion S shown in FIG. 2. FIG. It is an upper exploded perspective view of a protection frame which constitutes a rice cooker concerning an embodiment of the present invention. It is a lower exploded perspective view of a protection frame which constitutes a rice cooker concerning an embodiment of the present invention. 6 is a side view of the flange member shown in FIGS. 4 and 5. FIG. FIG. 7 is a diagram showing the lattice-like ribs of the reinforcing ribs shown in FIG. 6 with emphasis in thick black lines. FIG. 7 is a diagram illustrating the brace-like ribs of the reinforcing ribs shown in FIG. 6 with emphasis in thick black lines. 3 is an enlarged view of the enclosed portion T shown in FIG. 2. FIG.

<Configuration of rice cooker according to embodiment of the present invention>
The rice cooker 100 according to the embodiment of the present invention is an induction heating pressure rice cooker, and as shown in FIGS. 1 and 2, mainly includes a main body 110, an inner pot 130, a lid body 140, and a hinge. It is composed of a mechanism 150. These components will be explained in detail below.

1. Main Body As shown in FIG. 2, the main body 110 mainly includes a housing 111, a heat insulating material (not shown), a heat retaining heater 112, an induction heating coil 113, a furnace member 122, and a ferrite core assembly (not shown). , a thermistor 114, a blower fan 115, a heat sink 116, a power circuit board 118, an automatic winding type power cord unit 120, and an opening/closing lever 123. These components will be explained in detail below.

(1) Housing As shown in FIGS. 1 and 2, the housing 111 is mainly composed of a side wall 111a, a bottom wall 111b, a shoulder member 111c, and a protective frame 111d, and includes a heat insulating material (not shown). ), a heat retention heater 112, an induction heating coil 113, a ferrite core assembly, a thermistor 114, a blower fan 115, a heat sink 116, a power circuit board 118, an automatic winding power cord unit 120, and the like. Each component of the housing 111 will be described in detail below.

The side wall 111a is an enclosing wall that has a substantially rectangular shape in plan view, and covers the side surface of the main body 110 as shown in FIGS. 1 and 2. Furthermore, as shown in FIGS. 1 and 2, an opening/closing lever 123 is provided at the upper part of the front side of the side wall 111a.

The bottom wall 111b is a substantially rectangular plate-shaped body, and as shown in FIGS. 1 and 2, it is fitted under the side wall 111a and covers the opening on the lower side of the side wall 111a. The bottom wall 111b includes an intake port Os (see FIG. 2) for sucking air outside the housing 111 into the interior, and an exhaust port Os (see FIG. 2) for discharging the air inside the housing 111 to the outside. (not shown) is formed. Note that, as shown in FIG. 2, a blower fan 115 is disposed directly above the intake port Os. When the blower fan 115 is driven, external air is sucked into the housing 111 through the intake port Os, and the air flow generated thereby causes internal heated air to be discharged from the exhaust port to the outside of the system.

The shoulder member 111c is a frame having a substantially rectangular shape in a plan view, and is fitted onto the upper side of the side wall 111a, as shown in FIGS. 1 and 2, and covers the opening on the upper side of the side wall 111a. A flange member FP is attached to the lower side of the shoulder member 111c so as to be in contact with the top wall FP1 (see FIG. 4) of the flange member FP of the protection frame 111d. Note that an opening for passing the inner pot 130 is formed in the center of the shoulder member 111c.

The protective frame 111d has the role of accommodating the inner pot 130 and maintaining the shape of the shoulder member 111c, and is made of a material that easily maintains its shape, such as polyethylene terephthalate (PET) resin. As shown in FIGS. 2 to 5, the protective frame 111d is mainly composed of three members: a flange member FP, an intermediate member MP, and a bottom member BP.
These components will be explained in detail below.

The flange member FP constitutes the upper part of the protection frame 111d, as shown in FIGS. 2 to 5. The flange member FP is then attached to the upper side of the intermediate member MP via the packing PK1, as shown in FIGS. 2 and 3. Note that this packing PK1 is a substantially annular member, and as shown in FIGS. 2 and 3, it is disposed between the flange member FP and the intermediate member MP, and is arranged between the flange member FP and the intermediate member MP. The flange member FP and the intermediate member MP are sandwiched between the upper and lower sides, and have the role of closing the gap between the flange member FP and the intermediate member MP over the entire circumference. As shown in FIG. 3, the packing PK1 is formed from a main body portion PK1a and an outer ring portion PK1b. As shown in FIG. 3, the main body portion PK1a is located below the flange member FP and is in close contact with the flange member FP. Note that, as shown in FIG. 3, a cutout portion PK1c is formed in the main body portion PK1a. As shown in FIG. 3, the cutout portion PK1c extends from the lower end of the main body portion PK1a to the upper part of the main body portion PK1a in the height direction. The upper end portion of the plate portion 112a of the heat-retaining heater 112 is fitted into the notch portion PK1c. As shown in FIG. 3, the outer ring portion PK1b extends outward and downward from the outer edge at the central portion in the height direction of the main body portion PK1a. As shown in FIG. 3, the portion of the outer ring portion PK1b that extends outward is located above the upper end of the side wall of the intermediate member MP and comes into close contact with the intermediate member MP, and the outer ring portion PK1b has an outer edge. The portion extending downward from the side wall covers the upper end portion of the side wall of the intermediate member MP from the outside with a predetermined gap. Further, as shown in FIGS. 2 and 3, the opening/closing lever 123 is provided at the front part of the flange member FP so that the rotating shaft 123a of the opening/closing lever 123 is inserted into a bearing part (not shown) of the flange member FP. is installed. Further, as shown in FIGS. 4 to 8, the flange member FP is mainly formed of a top wall FP1, a bottom wall FP2, and a reinforcing rib FP3. As described above, the ceiling wall FP1 is in contact with the lower side of the shoulder member 111c. Moreover, as shown in FIG. 4, an opening for passing the inner pot 130 is formed in the center of the top wall FP1. As shown in FIGS. 4 to 8, the bottom wall FP2 is formed to face the top wall FP1. Moreover, as shown in FIG. 5, an opening for passing the inner pot 130 is formed in the center of the bottom wall FP2. Further, as shown in FIGS. 4 to 8, a plurality of screw receiving portions FP4 are formed on the bottom wall FP2. The flange member FP and the intermediate member MP are fastened by screwing a screw (not shown) so as to reach from the lower side of the screw receiving part MP3 of the intermediate member MP to the screw receiving part FP4. As shown in FIGS. 4 to 8, the reinforcing rib FP3 is a rib formed from a lattice rib FP3a and a brace rib FP3b, and is located between the top wall FP1 and the bottom wall FP2 and between the flange member FP. It is formed on the left and right sides of. As shown in FIG. 7, the lattice-like rib FP3a extends in the up-down direction or the front-back direction. The brace-like rib FP3b extends diagonally, as shown in FIG.

As shown in FIGS. 2 to 5, the intermediate member MP is a substantially cylindrical member having an annular recess R formed inside, and constitutes an intermediate portion of the protective frame 111d. As shown in FIGS. 2, 3, and 9, the packing PK1 is located at the upper end of the recess R, and the main body PK2a of the packing PK2 (described later) is located at the lower end of the recess R. . As shown in FIGS. 3 and 9, a heat-retaining heater 112 is disposed in a portion of the recess R that is close to the inside. Here, as shown in FIGS. 2, 3, and 9, a sealed space SP is formed that is surrounded by the intermediate member MP, the heat-retaining heater 112, and the main body portion PK2a of the packing PK1 and the packing PK2. Further, as shown in FIGS. 2 to 5, a front flange portion MP1 is formed at the front portion of the center portion in the height direction of the intermediate member MP. The front flange portion MP1 extends forward and downward from the front edge. Note that here, the front flange portion MP1 is designed such that the induction heating coil 113 is disposed inside the front edge of the front flange portion MP1 in plan view. As shown in FIGS. 2 to 5, two protrusions MP1a extending toward the front are formed at the center of the front part of the front flange part MP1. As shown in FIGS. 2 and 3, this protrusion MP1a is in contact with the inner peripheral surface of the front part of the side wall 111a, and pushes the front part of the side wall 111a outward. Further, as shown in FIGS. 4 and 5, a plurality of support portions MP2 are formed in the intermediate member MP. The support portion MP2 extends downward from the upper end of the side wall on the outer peripheral surface of the side wall of the intermediate member MP. In the state where the intermediate member MP is fastened to the bottom member BP (see FIGS. 2, 3, and 9), the lower end of the support part MP2 is in contact with the flange part BP2 of the bottom member BP, and the support part MP2 is connected to the bottom member BP. The bottom member BP is supported from the outside of the collar portion BP2. At this time, as shown in FIGS. 2, 3, and 9, the packing PK2 is disposed from the inside of the lower end of the intermediate member MP to the inside of the upper end of the bottom member BP. The packing PK2 is a substantially annular member, and as shown in FIGS. 2, 3, and 9, the packing PK2 closes the gap between the intermediate member MP and the bottom member BP over the entire circumference. It is formed from a portion PK2a and a hanging portion PK2b. As described above, the main body part PK2a is located at the lower end of the recess R and is in close contact with the intermediate member MP. Note that, as shown in FIGS. 3 and 9, the main body portion PK2a has different shapes depending on the location. More specifically, the main body part PK2a located at the front end of the packing PK2 has a shape as shown in FIG. It has a shape as shown in 9. Note that, as shown in FIG. 9, a cutout portion PK2c is formed in the main body portion PK2a located other than the front end of the packing PK2. As shown in FIG. 9, this notch portion PK2c extends from the upper end of the main body portion PK2a to the lower part of the main body portion PK2a in the height direction. The lower end portion of the plate portion 112a of the heat-retaining heater 112 is fitted into the notch portion PK2c. As shown in FIGS. 3 and 9, the hanging portion PK2b extends downward from the inside of the lower end of the main body portion PK2a, and is in close contact with the inner peripheral surface of the furnace member 122. Further, as shown in FIGS. 4 and 5, a fastening flange portion MP4 is formed on the rear side of the front flange portion MP1 in the intermediate member MP. As shown in FIG. 4, the fastening flange portion MP4 has a horseshoe shape. A plurality of screw receiving portions MP3 are formed in this fastening flange portion MP4. As described above, a screw is screwed into the screw receiving portion MP3 from below, and the flange member FP and the intermediate member MP are fastened together.

The bottom member BP constitutes the lower part of the protection frame 111d, as shown in FIGS. 2 to 5. Note that, as shown in FIGS. 2, 3, and 9, a furnace member 122 is attached to the inside of the bottom member BP. Further, as shown in FIGS. 4 and 5, an opening BP1 for passing the thermistor 114 is formed in the center of the bottom wall of the bottom member BP. Further, as shown in FIGS. 2 to 5, a flange portion BP2 is formed at the upper part of the bottom member BP. As described above, this collar portion BP2 comes into contact with the lower end of the support portion MP2 of the intermediate member MP, and is supported by the support portion MP2 of the intermediate member MP. Further, as shown in FIGS. 4 and 5, a plurality of screw receiving portions BP3 are formed directly below the collar portion BP2. A screw (not shown) for attaching the ferrite core assembly to the bottom member BP is screwed into the screw receiving portion BP3.

(2) Heat Insulating Material The heat insulating material is wound around the side wall of the intermediate member MP of the protective frame 111d, the side wall of the bottom member BP of the protective frame 111d, and the outer periphery of the induction heating coil 113. It plays a role of suppressing the leakage to the outside of the intermediate member MP of the protection frame 111d and the outside of the bottom member BP of the protection frame 111d.

(3) Heat retention heater The heat retention heater 112 is a heat source for keeping the inner pot 130 warm after rice cooking, and has a substantially cylindrical shape, and as described above, the heat retention heater 112 is near the inner side of the recess R of the intermediate member MP. located in the section. Note that the warming heater 112 may be used together with the induction heating coil 113 to heat the inner pot 130 not only when keeping the rice warm but also when cooking rice. As shown in FIGS. 3 and 9, the heat-retaining heater 112 is mainly formed of a plate portion 112a, a heater wire 112b, and a cover portion 112c. The plate portion 112a is a metal plate. The upper end portion of the plate portion 112a is fitted into the inside of the notch portion PK1c of the packing PK1 so as to be in contact with and along the upper inner peripheral surface of the notch portion PK1c of the packing PK1. As shown in FIG. 9, the lower end portion of the plate portion 112a other than the lower end portion of the front end is connected to the notch portion of the packing PK2 so as to be in contact with and along the lower inner peripheral surface of the notch portion PK2c of the packing PK2. It is fitted inside PK2c. As shown in FIG. 3, the heater wire 112b is wound around the center portion of the outer peripheral surface of the plate portion 112a in the height direction. The cover portion 112c covers and protects the heater wire 112b from the outside.

(4) Induction Heating Coil The induction heating coil 113 is an induction heating source that inductively heats the inner pot 130, and as shown in FIG. It is arranged.

(5) Furnace member The furnace member 122 plays the role of efficiently accumulating heat in the inner pot 130, and as shown in FIGS. 2, 3 and 9, the bottom of the inner pot 130 and the protective frame 111d. It is arranged between the material BP. Note that, as shown in FIGS. 2, 3, and 9, the bottom wall of the intermediate member MP of the protection frame 111d is located directly above the upper end of the furnace member 122. That is, the furnace member 122 is attached to the inside of the bottom member BP of the protection frame 111d before the intermediate member MP of the protection frame 111d is fastened to the bottom member BP of the protection frame 111d. Therefore, after the rice cooker 100 according to the embodiment of the present invention is assembled, the furnace member 122 cannot be freely removed from the protection frame 111d like the inner pot 130. Further, as shown in FIG. 2, an opening for passing the thermistor 114 is formed in the center of the bottom wall of the furnace member 122.

(6) Ferrite Core Assembly The ferrite core assembly is arranged around the induction heating coil 113. As described above, the ferrite core assembly is attached to the bottom member BP of the protection frame 111d. A ferrite core is housed in the ferrite core assembly, and this ferrite core plays the role of suppressing electromagnetic waves generated from the induction heating coil 113 when energized from leaking to the outside.

(7) Thermistor The thermistor 114 is a temperature sensor, and as shown in FIG. It projects upwardly through an opening formed in the. Note that this thermistor 114 is biased upward by a biasing member such as a coil spring. That is, this thermistor 114 is in a state where it can freely appear and retract along the vertical direction. Further, this thermistor 114 is incorporated into an inner pot detection sensor (not shown). The inner pot detection sensor is for determining whether or not the inner pot 130 is present in the rice cooker, and when the thermistor 114 is lowered to the lower end position, it sends a detection signal to the microcomputer on the control circuit board 119. do. When the microcomputer receives the detection signal, it determines that the inner pot 130 is present in the rice cooker. Note that if the microcomputer determines that the inner pot 130 is not present in the rice cooker 100, the rice cooking operation is not started.

(8) Ventilation Fan As described above, the ventilation fan 115 is disposed directly above the air intake port Os formed in the bottom wall 111b of the housing 111, with the rotation axis substantially along the vertical direction (Fig. (see 2). That is, when the blower fan 115 is driven, external air is sucked in through the intake port Os, flows into the housing, and is sent upward as it is. The external air sent upward passes through the heat sink 116 and is supplied to the power supply circuit board 118 and the like to cool these members.

(9) Heat Sink The heat sink 116 is a component that efficiently exchanges heat with the outside air, and is attached to the power supply circuit board 118 as shown in FIG. 2.

(10) Power supply circuit board The power supply circuit board 118 is a board that constitutes a power supply circuit, and has heat-generating components, various electronic components, circuit elements, and the like mounted thereon. Note that, as shown in FIG. 2, the power supply circuit board 118 is housed in a lower space on the rear side of the housing 111.

(11) Automatic winding type power cord unit The automatic winding type power cord unit 120 is composed of a power cord (not shown), an automatic winding mechanism (not shown), etc., as shown in FIG. It is housed in a space on the rear side of the housing 111. Note that, as shown in FIG. 1, a plug PL is provided at the tip of the power cord.

(12) Opening/Closing Lever As described above, the opening/closing lever 123 is attached to the front part of the flange member FP of the protection frame 111d. At this time, as shown in FIGS. 2 and 3, the rotating shaft 123a of the opening/closing lever 123 is inserted into the bearing part of the flange member FP of the protective frame 111d, and the opening/closing lever 123 It has a structure that allows it to rotate up and down around the center. When the user opens the lid 140, the user rotates the opening/closing lever 123 downward about the rotating shaft 123a. Then, a stopper (not shown) for maintaining the lid 140 in the closed state is released, and the lid 140 is lifted upward by the biasing force of the torsion spring incorporated in the hinge mechanism 150, so that the lid 140 is in the open state. becomes. Note that when the user closes the lid 140, the user does not need to operate the opening/closing lever 123. When the user pushes the lid 140 toward the main body 110, the stopper acts to maintain the lid 140 in the closed state.

2. Inner Pot The inner pot 130 is a bowl-shaped pot that opens upward, and is inserted into the opening of the shoulder member 111c, the opening of the flange member FP of the protective frame 111d, and the opening of the intermediate member MP of the protective frame 111d, and is inserted into the opening of the shoulder member 111c, the opening of the intermediate member MP of the protective frame 111d, As shown in FIGS. 3 and 9, the furnace member 122 is housed in the protective frame 111d with a predetermined gap. The inner pot 130 can be freely removed from the protection frame 111d even after being housed in the protection frame 111d. Note that the inner pot 130 is a multilayer body (clad material) of various aluminum alloys and stainless steel alloys, and can be heated by the induction heating coil 113 or the heat-retaining heater 112.

3. Lid Body As shown in FIGS. 1 and 2, the lid body 140 mainly includes an exterior body 141, a pressure adjustment mechanism 143, a reinforcing member (not shown), and an inner lid 145, and includes a hinge mechanism 150. It is rotatably attached to the main body 110 via.

As shown in FIGS. 1 and 2, the exterior body 141 is a substantially rectangular parallelepiped-shaped member and houses the pressure adjustment mechanism 143 and the like. Further, this exterior body 141 is reinforced with a reinforcing member so that it can withstand internal pressure during use. Furthermore, an inner lid 145 is detachably provided on the lower side of the exterior body 141.

The pressure adjustment mechanism 143 adjusts the pressure inside the inner pot 130 to 1.03 to 1.3 atmospheres when the lid 140 is closed and pressure cooking is being performed. Moreover, this pressure adjustment mechanism 143 controls the pressure inside the main body 110 so that the lid 140 does not open due to the operation of the opening/closing lever 123 during the pressure cooking operation. In this embodiment, the pressure adjustment mechanism 143 is not particularly limited, and a conventional one may be used.

The reinforcing member is for increasing the strength of the lid body 140. Note that in this embodiment, the reinforcing member is not particularly limited, and may be a resin part or a metal plate itself, or may be a resin part or a metal plate with a complicated shape.

The inner lid 145 is a member for covering and sealing the upper part of the inner pot 130, as shown in FIG.

4. Hinge Mechanism As described above, the hinge mechanism 150 has the lid 140 attached to the main body 110 so that the lid 140 is rotatable relative to the main body 110. Note that this hinge mechanism 150 biases the lid 140 in the opening direction.

<Characteristics of the rice cooker according to the embodiment of the present invention>
(1)
In the rice cooker 100 according to the present embodiment, the protective frame 111d includes a flange member FP, an intermediate member MP, and a bottom member BP. According to the configuration of the protective frame 111d, for example, in the manufacture of pressure rice cookers and non-pressure rice cookers, only the flange members that are different in the magnitude of stress applied during rice cooking are used as non-common parts, and the required characteristics are almost the same. The same bottom member BP and middle member MP can be made common. Furthermore, for example, in manufacturing a rice cooker equipped with the thermistor 114 and a rice cooker without the thermistor 114, only the bottom member, which differs in the necessity of forming an opening for protruding the thermistor 114, is used as a non-common component, and the required characteristics are almost the same. The same flange member FP and intermediate member MP can be made common. Furthermore, for example, in manufacturing a rice cooker in which the intermediate member has a mounting structure for the heat retention heater 112, and a rice cooker in which the intermediate member does not have a mounting structure for the heat retention heater 112, only the intermediate member is made a non-common part, and required characteristics are met. The flange member FP and bottom member BP, which are substantially the same, can be made common. That is, according to the configuration of the protective frame 111d, in manufacturing rice cookers having various characteristics, it is possible to manufacture protective frames according to the characteristics while using common parts. Therefore, it is possible to meet the various demands of consumers in the rice cooker market, and to suppress the ratio of manufacturing costs to sales for each rice cooker model as much as possible.

(2)
In the rice cooker 100 according to the present embodiment, the induction heating coil 113 is disposed outside the bottom wall and the lower end of the side wall of the bottom member BP. Furthermore, a front flange portion MP1 is formed at the front portion of the central portion in the height direction of the intermediate member MP, which extends toward the front and extends downward from the front outer edge. The front flange portion MP1 is designed such that the induction heating coil 113 is disposed inside the front outer edge of the front flange portion MP1 when viewed from above. Therefore, in this rice cooker 100, even if liquid (e.g., water) that has entered through the gap between the shoulder member 111c and the opening/closing lever 123 flows down toward the induction heating coil 113, the liquid is It can be made to run along the front flange portion MP1 of the member MP. In other words, the liquid can be dropped outside the induction heating coil 113. Therefore, in this rice cooker 100, the induction heating coil 113 can be protected from liquid that has entered through the gap between the shoulder member 111c and the opening/closing lever 123.

(3)
In the rice cooker 100 according to the present embodiment, two protrusions MP1a extending toward the front are formed at the center of the front part of the front flange part MP1. The protrusion MP1a contacts the inner circumferential surface of the front portion of the side wall 111a and pushes the front portion of the side wall 111a outward. Therefore, in this rice cooker 100, even if the front part of the side wall 111a is pressed down, deformation of the front part of the side wall 111a can be suppressed as much as possible.

(4)
In the rice cooker 100 according to the present embodiment, the packing PK1 is vertically sandwiched between the flange member FP and the intermediate member MP, and closes the gap between the flange member FP and the intermediate member MP over the entire circumference. I'm here. Moreover, the packing PK2 closes the gap between the intermediate member MP and the bottom member BP over the entire circumference. Therefore, in this rice cooker 100, liquid may leak inside the protective frame 111d or outside the protective frame 111d through the gap between the flange member FP and the intermediate member MP or the gap between the intermediate member MP and the bottom member BP. Leakage can be suppressed.

(5)
In the rice cooker 100 according to the present embodiment, a sealed space SP is formed surrounded by the intermediate member MP, the heat retaining heater 112, and the main body portion PK2a of the packing PK1 and the packing PK2. Therefore, in this rice cooker 100, the heat of the warming heater 112 can be prevented from escaping to the outside of the intermediate member MP. Therefore, in this rice cooker 100, the heat of the warming heater 112 can be efficiently transmitted to the inner pot 130.

(6)
In the rice cooker 100 according to the present embodiment, a top wall FP1, a bottom wall FP2, and a reinforcing rib FP3 are formed on the flange member FP. The reinforcing rib FP3 is formed between the top wall FP1 and the bottom wall FP2 and on the left and right sides of the flange member FP, and includes a lattice-like rib FP3a extending in the vertical direction or the front-back direction, and a lattice-like rib FP3a extending in the diagonal direction. It is formed from brace-like ribs FP3b. Therefore, in this rice cooker 100, the top wall FP1, the bottom wall FP2, and the reinforcing ribs FP3 can be made difficult to deform during pressure cooking.

(7)
In the rice cooker 100 according to the present embodiment, the upper end portion of the plate portion 112a of the heat retention heater 112 is arranged in contact with and along the upper inner peripheral surface of the notch portion PK1c of the packing PK1. It is fitted inside. The lower end portion of the plate portion 112a of the heat retention heater 112 other than the lower end portion of the front end is inserted into the inside of the notch portion PK2c of the packing PK2 so as to touch and follow the lower inner peripheral surface of the notch portion PK2c of the packing PK2. It's embedded. Therefore, in this rice cooker 100, the position of the warming heater 112 can be fixed, and the position of the warming heater 112 can be prevented from shifting as much as possible.

<Modified example>
(A)
In the rice cooker 100 according to the previous embodiment, the reinforcing rib FP3 of the flange member FP was formed from the lattice-like rib FP3a and the brace-like rib FP3b. However, the reinforcing rib FP3 may be formed from either the lattice rib FP3a or the brace rib FP3b.

(B)
In the rice cooker 100 according to the previous embodiment, the front flange portion MP1 was formed at the front portion of the center portion in the height direction of the intermediate member MP. However, the extending portion may be formed in the front part of the central part in the height direction of the bottom member BP and in a part of the bottom member BP above the induction heating coil 113. In such a case, the front flange portion MP1 needs to be designed so that the induction heating coil 113 is disposed inside the front outer edge of this extension portion when viewed from above.

(C)
In the rice cooker 100 according to the previous embodiment, the protection frame 111d was composed of the flange member FP, the intermediate member MP, and the bottom member BP. However, the flange member FP and the intermediate member MP may be integrally formed, or the intermediate member MP and the bottom member BP may be integrally formed.

(D)
In the rice cooker 100 according to the previous embodiment, the intermediate portion of the protective frame 111d was composed of one intermediate member MP. However, the intermediate portion of the protective frame 111d may be composed of two or more intermediate members.

(E)
Although not mentioned in the rice cooker 100 according to the previous embodiment, a heat insulating material may be provided within the closed space SP. In such a case, the heat of the insulating heater 112 can be transferred to the inner pot 130 more efficiently.

(F)
Although the present invention was applied to the rice cooker 100 in the previous embodiment, the present invention may be applied to other cooking devices such as a home bakery.

Note that each of the above-mentioned modifications (A) to (F) may be applied alone, or a plurality of examples may be applied in combination.

100 Rice cooker (cooker)
111d Protective frame (container)
112 Heat retention heater (first heating section)
113 Induction heating coil (third heating section)
130 Inner pot (inner container)
BP Bottom member FP Flange member FP1 Top wall (upper wall part, reinforcement part)
FP2 Bottom wall (lower wall, reinforcement part)
FP3 Reinforcement rib (reinforcement rib part, reinforcement part)
MP Intermediate member MP1 Front flange part PK1 Packing (first close member, second close member)
PK2 packing (first close member, third close member)
SP Closed space (first space)
R recess (first recess)

Claims (6)

an inner container;
A container for accommodating the inner container,
The container is constructed by connecting a flange member located at the uppermost stage, a bottom member located at the lowermost stage, and at least one intermediate member located between the flange member and the bottom member. ,
further comprising a second close member sandwiched between the flange member and the intermediate member,
At least one of the intermediate members has an annular first recess,
a first heating section disposed within the first recess;
further comprising a third close member disposed on the opposite side of the second close member with the first heating section in between,
A first space surrounded by the intermediate member having the first recess, the first heating section, the second close member, and the third close member is sealed. an inner container;
A container for accommodating the inner container,
The container is constructed by connecting a flange member located at the uppermost stage, a bottom member located at the lowermost stage, and a plurality of intermediate members located between the flange member and the bottom member. Ori,
further comprising at least one fourth close member sandwiched between the at least two intermediate members,
At least one of the intermediate members has an annular second recess,
a second heating section disposed within the second recess;
further comprising a fifth close member disposed on the opposite side of the fourth close member with the second heating section in between,
A second space surrounded by the intermediate member having the second recess, the second heating section, the fourth close member, and the fifth close member is sealed.
Cooking device. further comprising a third heating section disposed below the bottom member,
At least one of the intermediate members has an extending portion extending from a first side portion toward the first side in a plan view,
In plan view, the third heating section is disposed inside the first end of the extension section.
The cooking device according to claim 1 or 2 . The cooking appliance according to any one of claims 1 to 3 , wherein the flange member has a reinforcing portion formed therein. The cooking device according to claim 4 , wherein the reinforcing portion is formed from an upper wall portion, a lower wall portion, and a reinforcing rib portion formed between the upper wall portion and the lower wall portion. The cooking device according to claim 5 , wherein the reinforcing rib portion extends in a lattice shape or a brace shape.

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