JP2020199179A - Inner pot and rice cooker - Google Patents

Abstract

To provide an inner pot and a rice cooker capable of suppressing boiling-over and improving user-friendliness.SOLUTION: An inner pot 40 includes a flange part 40c provided on an upper end side of a side surface part 40b, which expands outward from an outer peripheral surface of the side surface part 40b. The flange part 40c is formed from the upper end of the side surface part 40b to the upper end part of the inner pot 40. In the inner pot 40, a dimension A connecting opposed inner peripheral surfaces 40e in the flange part 40c is larger than a dimension B connecting opposed inner peripheral surfaces 40f at the upper end of the side surface part 40b. The flange part 40c forms an annular step shape so that the inner diameter is larger than the upper end inner diameter of the side surface part 40b.SELECTED DRAWING: Figure 3

Description

The present invention relates to an inner pot and a rice cooker provided with the inner pot.

In the conventional rice cooker, various ideas have been made to the shape of the inner pot in order to improve the taste of cooked rice. For example, in the rice cooker described in Patent Document 1, a flange portion is provided on the outer peripheral surface of the inner pot having a smooth inner peripheral surface. At this time, the flange portion is located at the height of the water at the time of maximum rice cooking and is provided on the body portion of the inner pot. Then, in a state where the lower part of the inner pot is housed in the main body and the upper part of the inner pot is housed in the lid provided so as to be openable and closable above the main body, a boiling space is created in the inner pot when cooking rice. It is supposed to be formed. Further, the rice cooker described in Patent Document 2 has a return collar portion on the outer peripheral portion of the inner pot, and the height from the bottom surface to the collar portion of the inner pot is the height from the bottom surface to the upper end of the inner pot. It is set to 1/4 to 3/4 of. That is, the collar portion is arranged on the outer peripheral portion of the inner pot near the center at the height from the bottom surface to the upper end of the inner pot.

Japanese Unexamined Patent Publication No. 2016-154735 Japanese Patent No. 6290069

However, in the rice cooker of Patent Document 1, since the inner peripheral surface of the inner pot is smooth, the rice cooker generated by boiling during rice cooking rises along the inner peripheral surface of the inner pot. Therefore, there was a case where the stick was released from the steam port of the lid and boiled over.

Further, in the case of the rice cooker of Patent Document 2, since the flange portion is arranged on the outer peripheral portion of the inner pot near the center of the height of the inner pot, the upper end of the inner pot is separated from the flange portion, and the main body is separated. On the other hand, it is difficult to attach / detach while grasping both the inner peripheral surface and the flange portion of the detachable inner pot. Therefore, when attaching / detaching the inner hook, it is necessary to put a hand on the bottom surface of the flange portion to attach / detach the inner hook, and it is difficult to attach / detach the inner hook stably with one hand. That is, there is a problem that both hands must be used when attaching and detaching the inner hook, which is not easy to use.

The present invention solves the above-mentioned problems, and an object of the present invention is to provide an inner pot and a rice cooker that can improve usability while suppressing spillage.

The inner pot according to the present invention is an inner pot used for a rice cooker, and has a bottomed shape having a bottom surface portion and a side surface portion communicating with the bottom surface portion, and is provided on the upper end side of the side surface portion. , A flange portion that projects outward from the outer peripheral surface of the side surface portion is provided, and the dimension that connects the opposing inner peripheral surfaces of the flange portion is the dimension that connects the opposing inner peripheral surfaces at the upper end of the side surface portion. It is formed larger than the above, and the boundary portion between the flange portion and the side surface portion has a stepped shape.

Further, the rice cooker according to the present invention includes the above-mentioned inner pot, a main body having an inner pot accommodating portion for accommodating the inner pot, a heating means for heating the inner pot, and an upper portion of the inner pot accommodating portion of the main body. It is provided with a lid that covers the rice cooker.

According to the present invention, the upper end side of the side surface portion of the inner pot is provided with a flange portion formed so as to project outward from the outer circumference of the side surface portion via a boundary portion forming an annular step shape, so that when boiling When the generated eggplant rises along the inner peripheral surface of the inner pot, it is necessary to temporarily overcome the step at the boundary. Therefore, it is possible to suppress the rising momentum of the man. Therefore, it is possible to suppress spillage. In addition, since the side surface is provided with a collar, the inner hook can be gripped with one hand, and usability can be improved. Thus, an inner pot and a rice cooker that can improve usability while suppressing spillage are provided.

It is a perspective view which shows the appearance of the rice cooker which concerns on Embodiment 1. FIG. It is explanatory drawing which shows the internal structure in the depth direction of the rice cooker which concerns on Embodiment 1. FIG. It is a vertical sectional view which shows the inner pot of the rice cooker which concerns on Embodiment 1. FIG. It is explanatory drawing which shows the internal structure in the depth direction of the rice cooker which concerns on Embodiment 2. It is a vertical sectional view which shows the inner pot of the rice cooker which concerns on Embodiment 2. FIG. It is a partial detailed view which shows the main part of the inner pot of FIG. 5 enlarged. It is explanatory drawing which shows the internal structure in the width direction of the rice cooker which concerns on Embodiment 2. It is explanatory drawing at the time of taking out the inner pot from the main body of the rice cooker which concerns on Embodiment 2. FIG. It is a partial detailed view which shows the upper right part of FIG. It is explanatory drawing which shows the state when the rice is put in the inner pot of FIG. It is explanatory drawing which shows the state in the process of returning the inner hook of FIG. 10 to the horizontal position. It is a vertical sectional view which shows the inner pot which concerns on Embodiment 3. FIG. It is a partial detailed view which shows the main part of the inner pot of FIG. 12 enlarged. It is explanatory drawing at the time of taking out the inner pot from the main body of the rice cooker which concerns on Embodiment 3. FIG. It is a partial detailed view which shows the upper right part of FIG.

Hereinafter, embodiments of the inner pot and rice cooker according to the present invention will be described with reference to the accompanying drawings. The form of the drawings is an example, and does not limit the present invention. In addition, those having the same reference numerals in the respective figures are the same or equivalent thereof, which are common to the entire text of the specification. In the following description, duplicates will be simplified or omitted as appropriate. It should be noted that the present invention is not limited to the embodiments described below, and may include any combination and modification of the configurations disclosed by the following embodiments. In addition, the position, shape and size of each component in the attached drawings may differ from the actual ones. Further, in FIG. 1, the arrow X indicates the depth direction of the rice cooker, and the arrow Y indicates the width direction of the rice cooker.

Embodiment 1.
FIG. 1 is a perspective view showing the appearance of the rice cooker 100 according to the first embodiment. FIG. 2 is an explanatory view showing an internal structure of the rice cooker 100 according to the first embodiment in the depth direction. FIG. 3 is a vertical cross-sectional view showing the inner pot 40 of the rice cooker 100 according to the first embodiment. FIG. 3 shows a vertical cross section of the rice cooker 100 passing through the center of the inner pot 40 along the width direction. The vertical cross section of the inner hook 40 shown in FIG. 3 is a cross section orthogonal to the horizontal direction.

<Overall structure of rice cooker 100>
First, the overall configuration of the rice cooker 100 according to the first embodiment will be described with reference to FIGS. 1 and 2. As shown in FIGS. 1 and 2, the rice cooker 100 according to the first embodiment includes a main body 10, a lid 20, and an inner pot 40. The main body 10 is a main structural part of the rice cooker 100, and has a bottomed box shape that opens upward, and an upper opening of an inner pot accommodating portion 10a, which will be described later, is formed at the upper portion. The upper opening is opened and closed by a lid 20 that covers the upper part of the inner pot accommodating portion 10a in the main body 10 that is axially connected to the main body 10 by a hinge portion 12. In the following description, as a general rule, each direction is defined based on the state in which the rice cooker 100 and the inner pot 40 are placed on a horizontal surface.

<Structure of lid 20>
As shown in FIG. 2, the lid 20 is always urged by the hinge portion 12 with respect to the main body 10 in the opening direction in which the upper opening is opened. Further, the lid 20 is opened and closed along an arc-shaped trajectory with the hinge portion 12 as a fulcrum by a latch and a latch release button 14 (not shown).

As shown in FIGS. 1 and 2, the rice cooker 100 includes an operation panel 21. The operation panel 21 is provided, for example, corresponding to each operation of various instructions from the user, and is configured by a button or the like that accepts these operations. The rice cooker 100 operates according to the operation of the operation panel 21 by the user. The operation panel 21 is provided on, for example, the upper surface of the outer lid 20a.

As shown in FIG. 2, an operation board 22 is built in the outer lid 20a provided with the operation panel 21. The operation board 22 is electrically connected to the operation panel 21. The operation board 22 controls various devices constituting the rice cooker 100 in response to the user's operation on the operation panel 21. For example, the operation board 22 controls the supply of current to the heating coil 11 by the power supply board 15 in response to the user's operation on the operation panel 21.

The lid 20 includes an outer lid 20a and an inner lid 29. The inner lid 29 is detachably attached to the outer lid 20a. An inner lid locking piece 25 for fixing the inner lid 29 is provided on the surface of the outer lid 20a on the main body 10 side. The inner lid 29 is attached to the surface of the outer lid 20a on the main body 10 side by locking the inner lid locking piece 25.

The outer lid 20a forms an upper portion and a side portion of the lid body 20 in a state where the lid body 20 is closed. The outer lid 20a covers the inner lid 29 from above in a state where the lid body 20 is closed. The outer lid 20a is connected to the support frame 16 of the main body 10 via the hinge portion 12. The outer lid 20a can be opened and closed with the hinge portion 12 as a fulcrum.

When the lid 20 is closed, the inner lid 29 is located on the lower surface side of the outer lid 20a. The inner lid 29 has an annular packing 30 that seals the opening of the inner pot 40. In the state where the lid 20 is closed, the packing 30 comes into contact with the upper part of the inner pot 40, and the inner lid 29 covers the opening of the upper part of the inner pot 40 housed in the main body 10. The inner lid 29 moves together with the outer lid 20a by opening and closing the outer lid 20a. The inner lid 29 moves together with the outer lid 20a to open or close the upper opening of the inner pot 40 housed in the main body 10.

As shown in FIG. 2, for example, a lid sensor 23 and a lid heater 24 are attached to the lid body 20. The lid sensor 23 is a sensor that detects the temperature or pressure inside the inner pot 40. The rice cooker 100 is configured to be able to cook rice according to the detection result of the lid sensor 23. Further, the lid heater 24 is a linear heating means that crawls on the lid body 20, and when power is supplied, heat is generated by resistance heating to heat the inner lid 29. The lid heater 24 evaporates water droplets adhering to the inner lid 29, for example, by heating the inner lid 29.

The lid sensor 23 and the lid heater 24 are attached to the inner lid 29 side of the outer lid 20a. The lid sensor 23 is inserted into, for example, a hole formed in the outer lid 20a. Further, between the lid heater 24 and the inner lid 29, for example, a heating plate (not shown) made of a material having excellent thermal conductivity such as aluminum is provided.

The lid 20 has a steam cartridge 26 fixed to the inner lid 29. The steam cartridge 26 has a function of separating the steam generated during rice cooking and the rice cooker, guiding the steam to the steam discharge hole 28, and returning the rice cooker to the inner pot 40. The steam cartridge 26 may be detachably provided on the outer lid 20a side. A lid steam path 27 is formed inside the steam cartridge 26. The lid steam path 27 is a ventilation path that guides the steam in the inner pot 40 to the outside of the rice cooker 100. A steam discharge hole 28 is formed on the upper surface of the steam cartridge 26. The steam that has passed through the lid steam path 27 is discharged from the steam discharge hole 28.

The steam cartridge 26 is provided with a guide cylinder 26a and an on-off valve 26b. The steam flowing in from the steam holes (not shown) at the lower end of the guide cylinder 26a is discharged to the outside from the steam discharge holes 28 at the upper part of the lid 20 via the steam cartridge 26 of the lid 20. When the heating is stopped, the internal pressure of the inner pot 40 drops, and the on-off valve 26b is opened, the hook is returned to the inner pot 40.

<Main body 10 and inner pot 40>
As shown in FIG. 2, the main body 10 has a hollow support frame 16 as a member for supporting the inner pot 40. A spacer 17 that regulates the position of the inner pot 40 in the height direction is attached to the support frame 16. The rice cooker 100 functions as a coil stand in the main body 10 and has an inner pot accommodating portion 10a which is a member forming the outer shell of the main body 10. In the inner pot accommodating portion 10a, a bottomed tubular inner pot 40 for accommodating an object to be heated such as water and rice is detachably accommodated.

The inner pot accommodating portion 10a is formed in the shape of a bottomed box that opens upward. As an example, the inner pot accommodating portion 10a is formed hollow by a wall-shaped member. The inner pot accommodating portion 10a contains various electronic devices and the like, which will be described later, which constitute the main body 10 of the rice cooker 100. The inner pot accommodating portion 10a has a bottom portion 10b. The bottom portion 10b is a portion facing the bottom surface and the lower portion of the side surface of the inner pot 40 in a state of being housed in the inner pot housing portion 10a.

As shown in FIGS. 1 and 2, a latch release button 14 is provided on the front surface of the inner hook accommodating portion 10a. When the latch release button 14 is pressed by the user while the lid 20 is closed, the lock between the lid 20 and the main body 10 is released. The user can open the lid 20 by pressing the latch release button 14.

Further, a power supply board 15 is provided inside the inner pot accommodating portion 10a. For example, an inverter circuit for converting commercial power into high-frequency power and supplying it to the heating coil 11 is mounted on the power supply board 15. The power supply board 15 is composed of various electronic components such as switching elements. The power supply board 15 is arranged on the back side of the main body 10 as an example.

Next, the inner pot 40 according to the first embodiment will be described in more detail. The inner pot 40 is formed of, for example, carbon, aluminum, iron, or a clad material of stainless steel and aluminum. Further, the inner pot 40 contains a magnetic metal that generates heat by electromagnetic induction. The inner pot 40 is arranged around the center of the lower surface of the inner pot accommodating portion 10a and at the corners on the outer periphery thereof, and is heated by electromagnetic induction of the heating coil 11 that generates heat when a high-frequency current is supplied to cook rice. To. The heating coil 11 is an example of a heating means for heating the inner pot 40.

The heating coil 11 is an annular member that is spirally swirled, and is arranged so as to face the lower surface portion 40a and the side surface portion 40b of the inner pot 40 with the bottom portion 10b of the inner pot accommodating portion 10a interposed therebetween. Specifically, the heating coil 11 includes a bottom surface heating coil 11a arranged on the center side of the bottom portion 10b of the inner pot accommodating portion 10a, a bottom surface portion outer peripheral heating coil 11b arranged on the outer peripheral side of the bottom portion 10b, and a bottom portion 10b. It is provided with an inclined portion heating coil 11c arranged at a corner portion on the outer periphery of the above.

A through hole 18 is formed in the center of the bottom portion 10b of the inner pot accommodating portion 10a. A temperature sensor 13 is provided in the through hole 18. The temperature sensor 13 detects the temperature of the inner pot 40 housed in the inner pot housing portion 10a. Specifically, the temperature sensor 13 detects the temperature of the inner pot 40 that is induced and heated by the heating coil 11.

The inner pot 40 is sealed by pressing the packing 30 provided on the inner lid 29 side against the upper surface when the lid 20 is closed. The outer surface of the inner pot 40 may be formed with irregularities by processing such as blasting to provide irregularities on the surface or painting.

In the case of the first embodiment, as shown in FIG. 3, the inner pot 40 has a bottomed tubular shape having a bottom surface portion 40a and a side surface portion 40b communicating with the bottom surface portion 40a, and the bottom surface portion 40a. At least a part of is formed flat. In the state shown in FIG. 3, the bottom surface portion 40a faces the horizontal plane. When the inner pot 40 is housed in the main body 10 of the rice cooker 100, the bottom surface portion 40a faces the bottom portion 10b of the inner pot housing portion 10a.

The side surface portion 40b is a portion forming the side surface of the inner pot 40 which has a bottomed tubular shape. The side surface portion 40b is a tubular portion formed upward from the bottom surface portion 40a.

Further, the inner hook 40 is provided on the upper end side of the side surface portion 40b, and includes a flange portion 40c protruding outward from the outer peripheral surface of the side surface portion 40b. The collar portion 40c is formed from the upper end of the side surface portion 40b to the upper end portion of the inner hook 40. At this time, the inner hook 40 is formed so that the dimension A connecting the opposing inner peripheral surfaces 40e at the flange portion 40c is larger than the dimension B connecting the opposing inner peripheral surfaces 40f at the upper end of the side surface portion 40b. The flange portion 40c forms an annular step shape having an inner diameter larger than the inner diameter of the upper end of the side surface portion 40b. That is, in the inner hook 40, the boundary portion between the flange portion 40c and the side surface portion 40b has a stepped shape.

In this case, the shape of the inner hook 40 is rotationally symmetric with respect to a central axis (not shown). The shape of the inner pot 40 does not have to be completely rotationally symmetric. Further, the inner pot 40 may have a biased shape. For example, the approximate shape of the projection drawing of the inner pot 40 shown in FIG. 3 in the vertical direction may be circular or elliptical.

At this time, the dimension A connecting the opposing inner peripheral surfaces 40e of the flange portion 40c is preferably set to be 5% or more larger than the dimension B connecting the opposing inner peripheral surfaces 40f at the upper end of the side surface portion 40b. Further, the height C of the flange portion 40c is preferably 1/4 or less of the height D of the entire inner pot 40.

As an example, the dimension A connecting the opposing inner peripheral surfaces 40e of the flange portion 40c is 200 mm, and the dimension B connecting the opposing inner peripheral surfaces 40f at the upper end of the side surface portion 40b is 183 mm. Further, the height C of the flange portion 40c is 30 mm, and the height D of the entire inner pot 40 is 140 mm.

In order to form the inner pot 40 including such a flange portion 40c, it is desirable to manufacture the inner pot 40 by, for example, a method such as cutting or casting. It is desirable that the material of the inner pot 40 produced by these construction methods is carbon, aluminum, iron or the like. The specific numerical values of the above-mentioned dimensions A, B, height C, and height D are reference values in an example only, and the dimensions of the inner pot 40 according to the first embodiment are limited to these. It's not something.

Further, the inner pot 40 has a mounting surface 40d that is mounted on the support frame 16 of the main body 10 when it is housed in the rice cooker 100 as a part of the collar portion 40c. The mounting surface 40d is a surface on which the inner pot 40 is mounted on the main body 10, and is supported by the support frame 16 of the main body 10. Therefore, in the state where the inner pot 40 is housed in the inner pot accommodating portion 10a of the main body 10 of the rice cooker 100, a part of the collar portion 40c of the inner pot 40 projects upward from the main body 10. Further, a water level scale 41 is provided on the inner peripheral surface of the inner pot 40. The water level scale 41 is printed on the inner peripheral surface of the side surface portion 40b of the inner pot 40, and is formed below the lowermost portion of the inner peripheral surface of the flange portion 40c. The water level scale 41 displays a guideline for the amount of rice and water to be cooked. For example, the optimum amount of water for every 0.5 go from 0.5 go to 5.5 go. Is displayed at the height of the water level. The water level scale 41 is set so that the height of the scale of 5.5 go, which is the maximum amount of cooked rice, is lower than the lowermost portion of the inner peripheral surface of the collar portion 40c.

<Effect of Embodiment 1>
As described above, in the first embodiment, the inner pot 40 of the rice cooker 100 is provided on the upper end side of the side surface portion 40b, and the flange portion 40c projecting outward from the outer peripheral surface of the side surface portion 40b. It has. At this time, the flange portion 40c has an annular step shape in which the dimension A connecting the opposing inner peripheral surfaces 40e is larger than the dimension B connecting the opposing inner peripheral surfaces 40f at the upper end of the side surface portion 40b. That is, the inner hook 40 is provided with a flange portion 40c having an inner diameter larger than the inner diameter of the upper end of the side surface portion 40b, so that the inner pot 40 has an annular step shape at the boundary portion between the side surface portion 40b and the flange portion 40c. As a result, when the onion generated at the time of boiling reaches the collar portion 40c, the inner diameter of the inner pot 40 expands and the volume expands, so that the space inside the collar portion 40c is temporarily cooled. Therefore, according to the inner pot 40 and the rice cooker 100 of the first embodiment, the rise of the rice cooker can be suppressed.

Further, the rod that rises along the inner peripheral surface of the side surface portion 40b needs to overcome the step at the boundary portion between the side surface portion 40b and the flange portion 40c. For this reason, once the rising momentum is weakened, it is possible to suppress the rising of the stick. As described above, the inner pot 40 of the first embodiment is provided with the stepped collar portion 40c, so that the rise of the stick at the time of boiling can be suppressed and the spillage from the steam discharge hole 28 can be suppressed.

Further, since the water level scale 41 of the inner pot 40 has a scale indicating the maximum amount of rice cooked at a position lower than the lowermost part of the collar 40c, even if the maximum amount of rice cooked is cooked, the rice cooked at the time of boiling Since it reaches the collar portion 40c, the rise of the rice can be suppressed in the same manner as described above.

Embodiment 2.
Next, the second embodiment will be described. In the second embodiment, the same or corresponding parts as those in the first embodiment are designated by the same reference numerals, and the duplicated description will be simplified or omitted.

FIG. 4 is an explanatory view showing the internal structure of the rice cooker 100 according to the second embodiment in the depth direction. FIG. 5 is a vertical cross-sectional view showing the inner pot 50 of the rice cooker 100 according to the second embodiment.

As shown in FIGS. 4 and 5, the shape of the inner pot 50 is a bottomed tubular shape similar to the inner pot 40. The shape of the inner hook 50 is rotationally symmetric. The inner pot 50 includes a bottom surface portion 50a and a side surface portion 50b. The bottom surface portion 50a is a portion forming the bottom surface of the inner pot 50. The side surface portion 50b is a portion forming the side surface of the inner pot 50. The side surface portion 50b is a tubular portion formed upward from the bottom surface portion 50a.

Further, the inner hook 50 is provided on the upper end side of the side surface portion 50b, and includes a flange portion 50c protruding outward from the outer peripheral surface of the side surface portion 50b. At this time, the inner hook 50 is formed so that the dimension E connecting the opposing inner peripheral surfaces 50e at the flange portion 50c is larger than the dimension F connecting the opposing inner peripheral surfaces 50f at the upper end of the side surface portion 50b. The flange portion 50c forms an annular step shape having an inner diameter larger than the inner diameter of the upper end of the side surface portion 50b. That is, in the inner hook 50, the boundary portion between the flange portion 50c and the side surface portion 50b has a stepped shape.

As an example, the dimension E connecting the opposing inner peripheral surfaces 50e of the flange portion 50c is 197 mm, and the dimension F connecting the opposing inner peripheral surfaces 50f at the upper end of the side surface portion 50b is 183 mm. Further, the height G of the flange portion 50c is 30 mm, and the height H of the entire inner pot 50 is 140 mm.

Further, the inner pot 50 includes a mounting surface 50d as a part of the collar portion 50c. The mounting surface 50d is a surface on which the inner pot is mounted on the main body, and is supported by the support frame 16 of the main body 10. Further, the inner surface of the inner pot 50 is provided with a water level scale 51.

The specific numerical values of the above-mentioned dimensions E, F, height G, and height H are reference values in an example only, and the dimensions of the inner pot 50 according to the second embodiment are limited to these. It's not something.

Next, the shape of the collar portion 50c will be described with reference to FIG. FIG. 6 is a partial detailed view showing an enlarged main part of the inner pot 50 of FIG. In the case of the second embodiment, the inner hook 50 is provided with a first inclined portion narrowed down so that the inner diameter becomes smaller toward the upper end opening on the facing inner peripheral surface 50e of the flange portion 50c. That is, the inner peripheral surface 50e of the flange portion 50c forms a first inclined portion that is inclined inward toward the upper end of the flange portion 50c. Therefore, in the following, it will be referred to as the first inclined portion 50e as appropriate.

Further, the inner peripheral surface 50e of the flange portion 50c is provided with a second inclined portion that obliquely connects the inner peripheral surface 50f at the upper end of the side surface portion 50b and the inner peripheral surface 50e of the flange portion 50c. That is, the boundary portion between the flange portion 50c and the side surface portion 50b, and the facing inner peripheral surface 50f at the upper end of the side surface portion 50b is a second inclined portion that is inclined inward toward the side surface portion 50b. Is doing. Therefore, hereinafter, it is appropriately referred to as a second inclined portion 50f.

Further, the outer peripheral surface 50g of the flange portion 50c is provided with a third inclined portion narrowed down so that the outer diameter becomes smaller from the upper end side of the flange portion 50c to the mounting surface 50d. That is, the outer peripheral surface 50g of the flange portion 50c forms a third inclined portion that is inclined inward toward the side surface portion 50b. Therefore, hereinafter, it is appropriately referred to as a third inclined portion 50 g. The first inclined portion 50e, the second inclined portion 50f, and the third inclined portion 50g may be formed independently of each other.

Next, the usage state of the inner hook 50 will be described with reference to FIGS. 7, 8, 9, 10 and 11. FIG. 7 is an explanatory view showing the internal structure of the rice cooker 100 according to the second embodiment in the width direction. FIG. 8 is an explanatory view when the inner pot 50 is taken out from the main body 10 of the rice cooker 100 according to the second embodiment. FIG. 9 is a partial detailed view showing the upper right portion of FIG. FIG. 10 is an explanatory view showing a state when rice is put in the inner pot 50 of FIG. 5 and tilted by 90 degrees. FIG. 11 is an explanatory view showing a state in which the inner hook 50 of FIG. 10 is being returned to the horizontal position.

As shown in FIGS. 7 and 8, in a state where the inner pot 50 is housed in the inner pot accommodating portion 10a of the main body 10 of the rice cooker 100, a part of the collar portion 50c of the inner pot 50 projects upward from the main body 10. ing. Further, as shown in FIG. 8, when the inner pot 50 is taken out from the main body 10 of the rice cooker 100, the user grasps the collar portion 50c and pulls it upward. At this time, as shown in FIG. 9, the first inclined portion 50e of the flange portion 50c is hooked according to the user's finger. Therefore, the collar portion 50c is easy for the user to grip, and the inner hook 50 can be stably supported. Further, the third inclined portion 50g makes it easy for the user's finger to support the flange portion 50c from the outer peripheral surface 50g side, and makes it easy to stably take out the inner hook 50.

Further, as shown in FIGS. 5 and 8, the height of the cooked rice 90 when the maximum amount of cooked rice is cooked according to the water level scale 51 of the inner pot 50 is the lowermost portion of the inner peripheral surface 50e of the collar portion 50c, that is, the side surface. It is located at a position lower than the inner peripheral surface 50f at the upper end of the portion 50b. Therefore, when the inner pot 50 is taken out from the main body 10 of the rice cooker 100, the cooked food 90 does not come into contact with the user's finger.

Further, as shown in FIG. 10, the inner pot 50 has the first inclined portion 50e formed on the inner surface side of the collar portion 50c, so that the inner pot 50 is 90 in a state where the rice 91 is put in, for example, when washing rice. When tilted, the rice 91 can be prevented from spilling from the inner pot 50. Further, as shown in FIG. 11, in the state where the inner pot 50 is being returned from the state of being tilted 90 degrees to the horizontal position, the rice 91 is the bottom portion of the inner pot 50 along the inclination of the second inclined portion 50f. It is easy to return to 50a. Therefore, it is possible to prevent the rice 91 from remaining on the step at the boundary between the flange portion 50c and the side surface portion 50b.

<Effect of Embodiment 2>
As described above, in the second embodiment, the flange portion 50c having an annular step shape provided in the inner hook 50 is the first inclined portion 50e, the second inclined portion 50f, and the third inclined portion. By providing each of 50 g, the user can more easily grip the inner pot 50. As a result, the user can more easily take out the inner pot 50 from the main body 10 of the rice cooker 100. Further, when the rice is washed using the inner pot 50, the rice 91 is less likely to spill from the inner pot 50, and it is possible to prevent the rice 91 from remaining on the collar portion 50c.

Further, when the maximum amount of rice cooked is cooked in the inner pot 50, since the cooked food 90 is located at a position lower than the collar portion 50c, the inner pot 50 can be safely taken out without the user's finger touching the cooked rice 90. Can be done.

Embodiment 3.
Next, the third embodiment will be described with reference to FIGS. 12, 13, 14, and 15. The same or corresponding parts as those in the first embodiment and the second embodiment are designated by the same reference numerals, and the duplicated description will be simplified or omitted.

FIG. 12 is a vertical cross-sectional view showing the inner hook 60 according to the third embodiment. FIG. 13 is a partial detailed view showing an enlarged main part of the inner pot 60 of FIG. FIG. 14 is an explanatory view when the inner pot 60 is taken out from the main body 10 of the rice cooker 100 according to the third embodiment. FIG. 15 is a partial detailed view showing the upper right portion of FIG.

As shown in FIGS. 12 and 13, the shape of the inner pot 60 is a bottomed tubular shape similar to the inner pots 40 and 50 of the above-described first and second embodiments. The shape of the inner hook 60 is rotationally symmetric. The inner pot 60 includes a bottom surface portion 60a and a side surface portion 60b. The bottom surface portion 60a is a portion forming the bottom surface of the inner pot 60. The side surface portion 60b is a portion forming the side surface of the inner pot 60. The side surface portion 60b is a tubular portion formed upward from the bottom surface portion 60a.

Further, the inner hook 60 is provided on the upper end side of the side surface portion 60b, and includes a flange portion 60c protruding outward from the outer peripheral surface of the side surface portion 60b. At this time, the flange portion 60c forms an annular step shape having an inner diameter larger than the inner diameter of the upper end of the side surface portion 60b. That is, in the inner hook 60, the boundary portion between the flange portion 60c and the side surface portion 60b has a stepped shape. Further, the inner hook 60 is provided with a mounting surface 60d as a part of the collar portion 60c. The mounting surface 60d is a surface on which the inner pot 60 is mounted on the main body 10, and is supported by the support frame 16 of the main body 10. Further, the inner pot 60 is provided with a water level scale 61 on the inner peripheral surface.

In the case of the third embodiment, the inner hook 60 is provided with a first inclined portion narrowed down so that the inner diameter becomes smaller toward the upper end opening on the facing inner peripheral surface 60e of the flange portion 60c. That is, the inner peripheral surface 60e of the flange portion 60c forms a first inclined portion that is inclined inward toward the upper end of the collar portion 60c. Therefore, in the following, it will be referred to as the first inclined portion 60e as appropriate.

Further, the inner peripheral surface 60e of the flange portion 60c is provided with a second inclined portion that obliquely connects the inner peripheral surface 60f at the upper end of the side surface portion 60b and the inner peripheral surface 60e of the flange portion 60c. That is, the boundary portion between the flange portion 60c and the side surface portion 60b, and the facing inner peripheral surface 60f at the upper end of the side surface portion 60b is a second inclined portion that is inclined inward toward the side surface portion 60b. Is doing. Therefore, hereinafter, it is appropriately referred to as a second inclined portion 60f.

Further, the outer peripheral surface 60g of the flange portion 60c is provided with a third inclined portion narrowed down so that the outer diameter is reduced from the upper end side of the flange portion 60c to the mounting surface 60d. That is, the outer peripheral surface 60g of the flange portion 60c forms a third inclined portion that is inclined inward toward the side surface portion 60b. Therefore, hereinafter, it is appropriately referred to as a third inclined portion 60 g. The first inclined portion 60e, the second inclined portion 60f, and the third inclined portion 60g may be formed independently of each other.

Further, a grip portion 60h recessed inward is formed on the outer peripheral surface 60g of the flange portion 60c. The grip portion 60h has a shape in which the thickness of the flange portion 60c is partially reduced to provide a step. As described above, the outer peripheral surface 60g of the flange portion 60c has two steps, that is, the grip portion 60h and the mounting surface 60d on the outer periphery of the boundary portion between the flange portion 60c and the side surface portion 60b. The grip portion 60h may be provided over the entire circumference of the inner pot 60, or may be provided only on a part thereof.

Next, a state when the inner pot 60 is taken out from the main body 10 of the rice cooker 100 will be described. As shown in FIGS. 14 and 15, when the inner pot 60 is taken out from the main body 10 of the rice cooker 100, the user grips the collar portion 60c and pulls up the inner pot 60 upward. At this time, the user's finger is caught on the grip portion 60h. That is, the grip portion 60h serves as a handle for the inner hook 60. As a result, the user can more easily take out the inner hook 60.

<Effect of Embodiment 3>
As described above, according to the inner pot 60 and the rice cooker 100 according to the third embodiment, the inner pot 60 has a first inclined portion 60e, a second inclined portion 60f, and a third inclined portion 60g. A flange portion 60c and a grip portion 60h were provided. As a result, the inner pot 60 can be more easily taken out from the main body 10 of the rice cooker 100.

10 Main body, 10a Inner pot housing, 10b Bottom, 11 Heating coil, 11a Bottom heating coil, 11b Bottom outer circumference heating coil, 11c Inclined heating coil, 12 Hinge, 13 Temperature sensor, 14 Latch release button, 15 Power supply Board, 16 support frame, 17 spacer, 18 through hole, 20 lid, 20a outer lid, 21 operation panel, 22 operation board, 23 lid sensor, 24 lid heater, 25 inner lid locking piece, 26 steam cartridge, 26a guide Cylinder, 26b on-off valve, 27 lid steam path, 28 steam discharge hole, 29 inner lid, 30 packing, 40 inner pot, 40a bottom part, 40b side surface part, 40c flange part, 40d mounting surface, 40e inner peripheral surface, 40f inner peripheral surface, 41 water level scale, 50 inner pot, 50a bottom surface, 50b side surface, 50c flange, 50d mounting surface, 50e inner peripheral surface (first inclined portion), 50f inner peripheral surface (second Inclined part), 50g outer peripheral surface (third inclined part), 51 water level scale 60 inner pot, 60a bottom part, 60b side surface part, 60c flange part, 60d mounting surface, 60e inner peripheral surface (first inclined part) , 60f inner peripheral surface (second inclined part), 60g outer peripheral surface (third inclined part), 60h grip part, 61 water level scale, 90 cooked food, 91 rice, 100 rice cooker, A dimension, B dimension, C Height, D height, E dimension, F dimension, G height, H height.

Claims (13)

An inner pot used for rice cookers
It has a bottomed shape having a bottom surface portion and a side surface portion communicating with the bottom surface portion.
A collar portion provided on the upper end side of the side surface portion and projecting outward from the outer peripheral surface of the side surface portion is provided.
The dimension connecting the opposing inner peripheral surfaces at the flange portion is formed to be larger than the dimension connecting the opposing inner peripheral surfaces at the upper end of the side surface portion.
An inner hook having a stepped shape at the boundary between the collar and the side surface. The inner pot according to claim 1, wherein the collar portion has a mounting surface on which the rice cooker is mounted on the main body of the rice cooker when it is housed in the rice cooker. The inner pot according to claim 1 or 2, wherein the dimension connecting the opposing inner peripheral surfaces of the collar portion is 5% or more larger than the dimension connecting the opposing inner peripheral surfaces at the upper end of the side surface portion. The inner pot according to any one of claims 1 to 3, wherein the height of the collar portion is 1/4 or less of the height of the entire inner pot. The invention according to any one of claims 1 to 4, wherein a first inclined portion that is inclined inward toward the upper end of the collar portion is formed on the inner peripheral surface of the flange portion. Inner pot. The inner pot according to any one of claims 1 to 5, wherein a second inclined portion that is inclined inward toward the side surface portion is formed on the inner peripheral surface of the collar portion. .. The inner pot according to any one of claims 1 to 6, wherein a third inclined portion that inclines inward toward the side surface portion is formed on the outer peripheral surface of the collar portion. The inner pot according to any one of claims 1 to 7, wherein a grip portion recessed inward is formed on the outer peripheral surface of the collar portion. The grip portion has a stepped shape.
The inner hook according to claim 8, wherein the outer peripheral surface of the collar portion has two steps between the grip portion and the boundary portion. The side surface portion has a water level scale indicating the water level on the inner peripheral surface.
The inner pot according to any one of claims 1 to 9, wherein the water level scale is formed below the lowermost portion of the inner peripheral surface of the collar portion. The water level scale is set according to claim 10, wherein the height of the cooked food when the water level is cooked at the maximum height is set to be lower than the lowermost portion of the inner peripheral surface of the collar portion. Inner pot. The inner pot according to any one of claims 1 to 11 and the inner pot.
An inner pot accommodating portion for accommodating the inner pot and a main body having a heating means for heating the inner pot,
A rice cooker comprising a lid covering the upper part of the inner pot accommodating portion of the main body. The rice cooker according to claim 12, wherein a part of the collar portion of the inner pot protrudes upward from the main body in a state where the inner pot is housed in the inner pot accommodating portion of the main body.

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