TWI623291B - Rice cooker - Google Patents

Abstract

The purpose is to obtain a rice cooker that suppresses the overflow of rice soup. It includes: a main body including an inner pot accommodating portion for accommodating the inner pot and a heating device for heating the inner pot; a cover body connected to the main body with a hinge and covering an upper portion of the inner pot accommodating portion of the body; In the state, a gap is formed with the body; the sealing material has a lip that abuts from the body outside the side wall of the inner pot in a state where the inner pot is housed in the body; a retaining ring for maintaining the sealing material; And an inner casing constituting a part of the body. The inner shell constitutes an opening portion of the inner pot accommodating portion; a retaining ring is located at a lower portion of the inner shell, and maintains a vertical position inside the inner pot accommodating portion; a sealing material is maintained between the maintaining ring and the inner case. between.

Description

Rice cooker

The present invention relates to a rice cooker that suppresses overflow of rice soup.

Conventionally, rice cookers have been provided with a rice soup separation box that allows the steam in the rice cooker to be released to the outside during cooking (for example, see Patent Document 1). The rice soup separation box is composed of a steam port box body having an upper opening and a valve mechanism, and a steam port cover provided on the upper opening portion of the steam port box. The steam port cover is displaced above the valve mechanism. A vapor exhaust hole is formed in a portion toward the side.

The internal structure of the rice soup separation box is provided with several barriers. By this barrier, the force of steam or rice soup flowing into the rice soup separation box is weakened to prevent rice soup from being ejected from the steam discharge hole, so that only the steam is discharged to the outside of the rice cooker.

Advance technical literature

[Patent Literature] Patent Literature 1: Japanese Patent Laid-Open No. 3549457

However, in the case of the technology disclosed in Patent Document 1, it is necessary to ensure that the flow path from the steam inlet to the steam discharge hole is long enough. In addition, when the input power is increased in order to cook a delicious meal, it is necessary to ensure a longer flow path.

Therefore, the volume proportion of the rice soup separation box with respect to the product body increases, and design restrictions also become larger. On the other hand, when the rice soup separation box is made small, it is necessary to perform control that makes the intermittent output of electric power and the like run counter to delicious rice.

In order to solve the above-mentioned problem, the present invention aims to obtain a rice cooker that suppresses the overflow of rice soup.

The rice cooker according to the present invention comprises a main body including an inner pot accommodating portion for accommodating an inner pot and a heating device for heating the inner pot; a cover body connected to the main body with a hinge and covering the inner portion of the main body An upper portion of the pot accommodating portion; a sealing material having a lip portion abutting the outside of a side wall of the inner pot from the body in a state where the inner pot is housed in the body; a retaining ring for maintaining the sealing material; and An inner shell constituting a part of the body; wherein: the lid body, in a closed state, forms a gap with the body; the inner shell, constituting an opening portion of the inner pot receiving portion; the maintenance ring, It is located at a lower part of the inner case, and maintains a position in the vertical direction inside the inner pot accommodating part; the sealing material is maintained between the retaining ring and the inner case.

The rice cooker according to the present invention has a sealing material, which is in contact with the outside of the side wall of the inner pot from the main body in a state where the inner pot is housed in the main body. A gap is formed between them. With this configuration, the outer surface of the upper side wall of the inner pot is housed in the body, and the lid body is in contact with the outside air from the point where it comes into contact with the sealing material in a closed state. In addition, the sealing material prevents the heat generated below the inner pot from escaping upward. Therefore, the side wall of the inner pot can be cooled by external air from the point where it contacts the sealing material. When the foam of the rice soup that comes up during the heat contacts the side wall of the upper portion of the inner pot, the bubbles of the rice soup are cooled and returned to the lower portion of the inner pot, so that the rice soup can be prevented from overflowing. In addition, the maintenance ring provided with the sealing material is arranged between the maintenance ring and the inner case, so that the inner pot provided to be detachably mounted does not deform or fall off the sealing material during mounting and dismounting. In addition, when the rice cooker is assembled, the sealing material is not deformed, and it is easy to assemble, which can reduce the time consumed by the operation and ensure the quality of the product.

1‧‧‧ Ontology

2‧‧‧ hinge

3‧‧‧ cover

4‧‧‧ latch release button

5‧‧‧ inner cover

6‧‧‧Inner pot

6a‧‧‧burst

6b‧‧‧upper side wall

7‧‧‧ Gasket

8‧‧‧ fixed frame

9‧‧‧ heater

10‧‧‧ Rice Soup Separation Box

11‧‧‧Guide tube

12‧‧‧ open and close valve

13‧‧‧Steam exhaust hole

14‧‧‧Temperature sensor

15‧‧‧Inner pot container

16‧‧‧ electromagnetic induction coil

17‧‧‧through hole

18‧‧‧Inner pot temperature sensor

19‧‧‧ support

20‧‧‧sealing material

20A‧‧‧sealing material

20B‧‧‧Sealing material

20a‧‧‧lip

20a1‧‧‧ upper lip

20a2‧‧‧ Lower lip

20aa‧‧‧ above

20b‧‧‧ protrusion

20c‧‧‧Supported Department

20d‧‧‧Ditch

20e‧‧‧ raised

20f‧‧‧Slit

21‧‧‧ highest water mark

22‧‧‧Operation Department

30‧‧‧ interior space

31‧‧‧ gap

32‧‧‧ outside space

33‧‧‧Inner shell

33a‧‧‧Cylinder

34‧‧‧ Exothermic plate

40‧‧‧Maintaining ring

40a‧‧‧ engagement protrusion

40b‧‧‧ recess

40c‧‧‧ inside rib

40d‧‧‧ protrusion

40e‧‧‧Outer rib

100‧‧‧ rice cooker

H1‧‧‧ size

H2‧‧‧ size

L‧‧‧ Distance

Fig. 1 is a perspective view showing a rice cooker according to the first embodiment of the present invention.

Fig. 2 is an explanatory view showing the A-A cross section of Fig. 1 of the rice cooker according to the first embodiment of the present invention.

Fig. 3 is an explanatory view showing a B-B cross section of Fig. 1 of the rice cooker according to the first embodiment of the present invention.

Fig. 4 is an enlarged view of a portion E in Fig. 2 of the rice cooker according to the first embodiment of the present invention.

Fig. 5 is an enlarged view of part F of Fig. 3 showing the rice cooker according to the first embodiment of the present invention.

Fig. 6 is a perspective view showing a state where the sealing material and the retaining ring according to the first embodiment of the present invention are combined.

Fig. 7 is an enlarged view showing a C-C cross section of Fig. 6.

Fig. 8 is a perspective view of the sealing material according to the first embodiment of the present invention.

Fig. 9 is an enlarged view showing a D-D cross section of Fig. 8.

Fig. 10 is a perspective view of a sealing material according to a second embodiment of the present invention.

Fig. 11 is a perspective view of a sealing material according to a third embodiment of the present invention.

Hereinafter, the embodiment of the rice cooker of this invention is demonstrated. In addition, the form of a figure is only an example and it does not limit this invention. It should be noted that what is indicated by the same symbol in each drawing is the same or equivalent, and this is the same throughout the specification. In the drawings below, the relationship between the dimensions of the constituent elements may differ from the actual ones.

Embodiment 1

FIG. 1 is a perspective view of a rice cooker 100 according to Embodiment 1 of the present invention. Fig. 2 is an explanatory view showing the A-A cross section of Fig. 1 of the rice cooker 100 according to the first embodiment of the present invention. Fig. 3 is an explanatory view showing a B-B cross section of Fig. 1 of the rice cooker according to the first embodiment of the present invention.

<Overall Structure of Rice Cooker 100>

As shown in FIGS. 1 to 3, the rice cooker 100 according to Embodiment 1 of the present invention includes a main body 1. An upper opening portion of the inner pot accommodating portion 15 is formed in the upper portion of the main body 1. The upper opening portion is opened and closed by a lid 3 which is pivotally connected to the main body 1 by a hinge 2 and covers an upper portion of the inner pot accommodating portion 15 of the main body 1.

<Structure of Lid 3>

The lid 3 is always pressed by a hinge spring (not shown) in an opening direction in which the upper opening portion is opened. The cover 3 is opened and closed by a latch and a latch release button 4 (not shown).

An inner cover 5 is detachably provided under the cover 3. The inner lid 5 is fixed to a fixing frame 8 to which a ring-shaped gasket 7 that seals the opening of the inner pot 6 is fixed.

A heater 9 is provided between the cover body 3 and the inner cover 5 to cover a surface on the inner cover 5 side with a metal plate (not shown). When the heater 9 receives power, it generates heat by resistance heating. The heater 9 is a linear heater attached to the cover 3.

The rice soup separation box 10 is installed closer to the upper side than the inner cover 5 of the cover body 3 to separate the rice soup mixed with steam. The rice soup separation box 10 is provided with a guide cylinder 11 and an on-off valve 12. The steam flowing in from a steam hole (not shown) at the lower end portion of the guide cylinder 11 passes through the rice soup separation box 10 of the cover body 3 and is discharged to the outside through the steam discharge hole 13 at the upper portion of the cover body 3. When the heating stops and the internal pressure of the inner pot 6 decreases, and the on-off valve 12 is opened, the rice soup returns to the inner pot 6.

The function of the rice soup separation box 10 is to separate steam generated from rice cooking and rice soup, guide the steam to the steam discharge hole 13, and return the rice soup to the inner pot 6.

A temperature sensor 14 is provided on the cover 3. The temperature sensor 14 is provided between the heater 9 and the rice soup separation box 10.

<Inner pot 6 and inner pot accommodating part 15>

The rice cooker 100 includes an inner pot accommodating portion 15 serving as a coil stand in the main body 1. The inner pot accommodating portion 15 detachably accommodates a bottomed cylindrical inner pot capable of receiving water, rice, and the like 6. The inner pot 6 is made of SUS. The inner pot 6 is heated by an electromagnetic induction coil 16 which is arranged around the central portion below the inner pot accommodating portion 15 and its peripheral edge portion as a heating means for cooking.

The outer surface of the inner pot 6 is subjected to, for example, sandblasting, to provide unevenness on the surface, or to form unevenness by painting or the like.

When the lid body 3 is closed, the inner pot 6 is closed by being pressed against the upper surface of the flange 6 a by a gasket 7 provided on the inner lid 5 side.

In addition, a through hole is formed at the center of the bottom of the inner pot accommodation portion 15 17. An inner pot temperature sensor 18 is provided in the through hole 17 so as to be able to extend and retract freely.

The inner pot accommodating portion 15 includes an inner case 33 constituting an opening portion. The inner case 33 constitutes the upper surface of the main body 1 of the rice cooker 100, and the upper case has a support body 19 which supports the inner pot 6 and protrudes upward.

<Support structure of inner pot 6>

Next, a supporting structure of the inner pot 6 will be described.

The inner pot 6 has a flange 6a extending outward in the radial direction at the uppermost portion. As shown in FIG. 5, when accommodated in the inner pot accommodating portion 15, the flange 6 a is placed on the plurality of support bodies 19 protruding upward from the edge of the upper opening portion of the inner pot accommodating portion 15 of the body 1. It is supported by the support body 19. The plurality of supporters 19 are dispersedly arranged in the circumferential direction of the edge of the upper opening. Therefore, the inner pot 6 is supported by the plurality of support bodies 19, and when the inner pot 6 is placed in the inner pot accommodation portion 15, the upper portion thereof protrudes from the inner pot accommodation portion 15. Therefore, an inner space 30 surrounded by the main body 1, the lid body 3, and the inner pot 6 is formed in the rice cooker 100.

A gap 31 is formed between the body 1 and the lid 3, and the internal space 30 communicates with the external space 32 outside the rice cooker 100 through the gap 31. Therefore, when the lid 3 is closed, the upper part of the inner pot 6 protruding from the inner pot accommodating part 15 of the main body 1 flows into the gap 31 between the main body 1 and the cover 3 outside the side wall upper part 6 b of the inner pot 6. Outside air contact. In particular, as shown in FIG. 5, where the inner pot 6 is not supported by the plurality of support bodies 19, the upper portion of the inner pot 6 is exposed from the inner pot accommodating portion 15 of the main body 1. The external air flowing in from the gap 31 between the body 1 and the cover 3 is in direct contact.

<Sealing material 20 and retaining ring 40>

Next, the sealing material 20 is demonstrated.

The inner pot accommodating portion 15 has a sealing material 20 therein. When the inner pot 6 is accommodated in the inner pot accommodating portion 15, the inner pot 6 abuts against the outside of the side wall of the inner pot 6. The sealing material 20 is formed of an elastic body made of a silicone-based soft material having heat resistance.

Fig. 4 is an enlarged view of a portion E in Fig. 2 of the rice cooker 100 according to the first embodiment of the present invention. Fig. 5 is an enlarged view showing a portion F of Fig. 3 of the rice cooker 100 according to the first embodiment of the present invention. FIG. 6 is a perspective view showing a state where the sealing material 20 and the retaining ring 40 according to the first embodiment of the present invention are combined. Fig. 7 is an enlarged view showing a C-C cross section of Fig. 6.

As shown in FIG. 6, the sealing material 20 and the retaining ring 40 are ring-shaped, and the sealing material 20 and the retaining ring 40 are arranged so as to be wound around the side wall of the inner pot accommodating portion 15 in one lateral direction.

As shown in FIG. 2 and FIG. 3, an element combining the sealing material 20 and the retaining ring 40 is disposed below the inner case 33 that forms an opening portion of the inlet of the inner pot accommodating portion 15. In addition, the inner case 33 has a cylindrical portion 33 a that surrounds an element that combines the sealing material 20 and the retaining ring 40 from the outer peripheral portion. An element combining the sealing material 20 and the retaining ring 40 is arranged along the inside of the cylindrical portion 33a. The lip portion 20 a of the sealing material 20 protrudes inward from the surface on the inner peripheral side of the retaining ring 40, and is arranged to protrude into the inner pot accommodating portion 15 when assembled in the rice cooker 100. In addition, the sealing material 20 is arranged above the highest water level line 21 at the time of the maximum cooking amount of the inner pot 6. That is, the maximum water level line 21 at the time of the maximum cooking amount of the inner pot 6 is located below the sealing material 20 which abuts against the outer side wall of the inner pot 6.

The heat radiation plate 34 is disposed below the element that combines the sealing material 20 and the retaining ring 40. The heat radiation plate 34 constitutes the inner side wall of the inner pot accommodating portion 15 The heat generated by the heating device is diffused to heat the inner pot accommodating portion 15. In Embodiment 1, the heat radiation plate 34 is formed by forming a metal plate into a cylindrical shape. The upper and lower end portions of the cylindrical heat radiating plate 34 are formed by rolling up a metal plate, and the upper and lower end portions have a thickness in a radial direction of the cylindrical shape. The upper end portion of the heat radiation plate 34 is disposed directly below the maintenance ring 40. When the rice cooker 100 is assembled, the components of the combination of the sealing material 20 and the retaining ring 40 are inserted from the lower side of the inner case 33 in FIGS. 2 and 3, and then the heat radiation plate is shown in FIGS. 2 and 3. 34 is inserted from the lower side of the element in which the sealing material 20 and the retaining ring 40 are combined. With this structure, the heat release plate 34 can support the retaining ring 40 from below.

Engaging protrusions 40 a are provided on the outer peripheral surface of the retaining ring 40 at a plurality of positions. In Embodiment 1, two sets of engagement protrusions 40a are arranged side by side on the outer peripheral surface of the retaining ring 40, and are arranged at four places so that the interval between the two sets of engagement protrusions 40a is equal. The engaging protrusion 40 a is inserted into the cylindrical portion 33 a of the inner case 33. The engaging projections 40 a on the outer peripheral surface of the retaining ring 40 are caught in depressions (not shown) provided on the inner peripheral surface of the cylindrical portion 33 a of the inner case 33. As a result, the vertical position of the retaining ring 40 relative to the inner case 33 is determined. In addition, the number of the engagement protrusions 40 a provided in each group and the group in which the engagement protrusions 40 a are provided at several positions of the retaining ring 40 are not limited to the above-mentioned form.

As shown in FIG. 7, the sealing material 20 is fitted into a recessed portion 40 b provided on the upper surface of the retaining ring 40. The retaining ring 40 includes an inner rib 40c and an outer rib 40e. The inner rib 40c constitutes a wall on the inner peripheral side of the retaining ring 40 of the recessed portion 40b, and constitutes an inner peripheral surface of the retaining ring 40. The outer rib 40 e constitutes a wall on the outer peripheral side of the recessed portion 40 b and constitutes an outer peripheral surface of the retaining ring 40. That is, the recessed portion 40b is formed in the inner rib 40c And outer rib 40e. In addition, the recessed portion 40b has a protruding portion 40d extending from the bottom surface of the recessed portion 40b in an upward direction.

Fig. 8 is a perspective view of a sealing material 20 according to the first embodiment of the present invention. Fig. 9 is an enlarged view showing a D-D cross section of Fig. 8.

As shown in FIG. 9, the sealing material 20 has a lip portion 20 a whose inner peripheral end portion is lowered downward. The lip portion 20 a has a thin plate shape and extends toward the inner side of the inner pot accommodating portion 15. The thin-plate-shaped lip portion 20 a is inclined from the opening of the inner pot accommodating portion 15 in the insertion direction of the inner pot 6. In this way, the lip portion 20a hangs inward and downward from the inner peripheral portion of the upper end of the sealing material 20 in the radial direction. Therefore, when the inner pot 6 is accommodated in the inner pot accommodating portion 15, the upper surface 20 aa of the lip portion 20 a comes into contact with the outside of the inner pot 6.

In addition, the outer peripheral side of the sealing material 20 forms a protruding portion 20 b on the lip portion 20 a. The lip portion 20a and the protruding portion 20b are connected by a supported portion 20c. The supported portion 20c is a portion having almost the same thickness as the lip portion 20a, and is formed to have a smaller size in the vertical direction in the rice cooker 100 than the protruding portion 20b. In addition, a groove portion 20d is formed on the lower surface of the protruding portion 20b in an upward direction from the lower surface.

As shown in FIG. 7, the protruding portion 20 b fits into the recessed portion 40 b of the retaining ring 40. In Embodiment 1, the dimension H2 of the protruding portion 20 b in the vertical direction is the same as the height from the bottom surface of the recessed portion 40 b of the outer rib 40 e of the retaining ring 40. The height from the bottom surface of the recessed portion 40 b of the inner rib 40 c of the retaining ring 40 is shorter than the height of the outer rib 40 e by the thickness of the supported portion 20 c of the sealing material 20. The protruding portion 40 d of the retaining ring 40 is inserted into a groove portion 20 d provided on the lower surface of the protruding portion 20 b of the sealing material 20. The depth of the groove portion 20d is greater than or equal to the height dimension of the protrusion portion 40d. That is, the shape of the retaining ring 40 is formed along the shape of the protruding portion 20 b of the sealing material 20. With the above configuration, the sealing material 20 does not It is easy to fall off from the state of being fitted into the recessed portion 40 b of the maintenance ring 40. At the time of assembly, since the sealing material 20 does not easily fall off the holding ring 40, there is an advantage that the work becomes easy.

As shown in FIG. 5, the supported portion 20 c is located between the lower surface of the inner case 33 and the inner rib 40 c of the retaining ring 40. In Embodiment 1, a distance L is formed between the lower surface of the inner casing 33 and the inner rib 40c of the retaining ring 40, and the relationship between the distance L and the thickness dimension H1 of the supported portion 20c is L = H1. In addition, the dimension H2 in the vertical direction of the protruding portion 20b in the rice cooker 100 satisfies L <H2. With the above configuration, the protruding portion 20 b is not pulled out from the space formed by the inner case 33 and the recessed portion 40 b of the retaining ring 40 toward the inner side of the inner pot accommodating portion 15. When the inner pot 6 is placed in the inner pot accommodation portion 15 or when the inner pot 6 is removed from the inner pot accommodation portion 15, the lip portion 20 a of the sealing material 20 may move upward or downward due to its sliding with the outside of the side wall of the inner pot 6. Pull away. Even if the force to pull the lip portion 20 a is added as described above, the sealing material 20 is not easily released from between the inner case 33 and the retaining ring 40.

In addition, the thickness dimension H1 of the supported portion 20c may be L <H1 in a state before being assembled into the rice cooker 100. If the sealing material 20 is made of a material having elasticity, when the sealing material 20 is sandwiched between the inner rib 40c of the retaining ring 40 and the inner case 33, it will be deformed due to the elasticity of the material, so that L = H1. In a state before being assembled into the rice cooker 100 such that the thickness dimension H1 satisfies L <H1, the supported portion 20c can be sandwiched between the inner casing 33 and the inner rib 40c of the retaining ring 40 with a specific force. With this configuration, the sealing material 20 can be firmly fixed to the inner side wall portion of the inner pot accommodating portion 15, and it is possible to prevent the sealing material 20 from falling off or deforming when the inner pot 6 is inserted or taken out.

As shown in FIG. 5, the upper surface 20 aa of the lip portion 20 a is in contact with the inner pot 6. Therefore, when the inner pot 6 is placed in the inner pot accommodating portion 15 of the main body 1, it can be surely sealed. Thereby, the escape of the heat which heats the lower part of the inner pot 6 in the inner pot accommodation part 15 to the upper side of the sealing material 20 is suppressed. On the other hand, the upper portion 6b of the side wall including the flange 6a of the inner pot 6 in the inner pot accommodating portion 15 is further above the sealing material 20, and can be easily cooled by contact with the outside air.

The sealing material 20 having the lip portion 20a is formed by a molding die subjected to sandblasting. The surface of the upper surface 20aa of the lip portion 20a has a fine uneven shape. The concave-convex shape of the upper surface 20aa of the lip 20a, in combination with the concave-convex shape applied to the outer surface of the inner pot 6, reduces the sliding resistance of the inner pot 6 to the lip 20a when the inner pot 6 is placed in the inner pot receiving portion 15. The uneven shape applied to the upper surface 20aa of the lip portion 20a may be applied to the entire sealing material 20.

As shown in FIG. 9, a plurality of protrusions 20 e are formed on the lower surface near the tip of the lip portion 20 a of the sealing material 20. The plurality of protrusions 20e are evenly arranged on the annular lip portion 20a at a uniform interval. When the inner pot 6 accommodated in the inner pot accommodating portion 15 is lifted, the lip portion 20a is turned over and is in a state in which the lower portion is in contact with the inner pot 6. At this time, the plurality of protrusions 20e under the lip portion 20a are in contact with the inner pot 6 at a point, thereby reducing the sliding resistance, and the inner pot 6 can be easily taken out from the inner pot accommodation portion 15.

<Function of Sealing Material 20>

Next, the function when cooking rice with the rice cooker 100 comprised as mentioned above is demonstrated.

When the inner pot 6 containing water and rice is placed in the main body 1 of the rice cooker 100 and the lid 3 is closed, and the rice cooking switch provided in the operation portion 22 is turned on, the action of the electromagnetic induction coil 16 will The inner pot 6 is heated. When the water in the inner pot 6 boils, Generates steam containing rice soup. At this time, as the internal pressure of the inner pot 6 rises, the on-off valve 12 of the rice soup separation box 10 is pushed upward to close the valve. Therefore, the steam containing the rice soup is introduced into the rice soup separation box 10 through the guide tube 11 through the steam hole. The rice soup separation box 10 separates steam generated from rice cooking and rice soup, and introduces steam into the steam discharge hole 13. Next, when the heating is stopped and the internal pressure of the inner pot 6 is reduced, the on-off valve 12 is lowered due to its own weight and the weight of the rice soup so that the valve is opened, and the rice soup is returned to the inner pot 6.

On the other hand, the lip portion 20a of the sealing material 20 abuts on the outside of the side wall of the inner pot 6, and in the state of being accommodated in the inner pot receiving portion 15, the upper portion of the side wall of the inner pot 6 protruding from the inner pot receiving portion 15 of the body 1 The outside of 6b is in contact with the external air flowing in from the gap 31 between the body 1 and the cover 3. In addition, the sealing material 20 prevents the heat generated below the inner pot 6 from escaping upward. Therefore, the side wall of the inner pot 6 which is upper than the abutting point with the sealing material 20 can be cooled by the external air, and when heated, the bubbles of rice soup that swelled from the outside in the radial direction of the inner pot 6 contact the inside. When the upper part of the pot 6 is inside the side wall, the bubbles of the rice soup are cooled and returned to the lower part of the inner pot 6, so that the overflow of the rice soup can be suppressed. Therefore, even if the input power or the duration of the input power is increased, the overflow of rice soup can be suppressed, and delicious rice can be cooked.

In the first embodiment, the sealing material 20 is attached to the retaining ring 40 and can maintain its shape in a ring shape. Therefore, when the rice cooker 100 is assembled, the sealing material 20 can be easily installed at a predetermined position. In addition, it is structured to sandwich the sealing material 20 by the retaining ring 40 and the inner case 33, and to provide the sealing material 20 with a large protruding portion 20b in the up-down direction, whereby even when using the rice cooker 100, The inner pot 6 is placed or taken out, and it is not easy for the sealing material 20 to fall off. condition. With the above-mentioned structure, the sealing material 20 can be made of a material that is more easily elastically deformed, and the contact between the sealing material 20 and the side wall of the inner pot 6 can be made better and the sealing performance can be improved.

Embodiment 2

In the second embodiment, the shape of the lip portion 20a of the sealing material 20A is different from that of the aforementioned embodiment. The other structures are the same as those of the first embodiment, so only the features will be described.

Fig. 10 is a perspective view showing a sealing material 20A according to a second embodiment of the present invention.

In the sealing material 20A of the second embodiment, a plurality of slits 20f are formed in the lip portion 20a. The plurality of slits 20f are evenly spaced at regular intervals in the annular lip portion 20a.

Thereby, the sliding resistance of the inner pot 6 and the lip portion 20 a is reduced, so that the inner pot 6 accommodated in the inner pot accommodation portion 15 can be easily taken out.

Embodiment 3

In Embodiment 3, the shape of the lip portions 20a1, 20a2 of the sealing material 20B is different from that of the above-mentioned embodiment. The other structures are the same as those of the first embodiment, and therefore only the features will be described.

Fig. 11 is a perspective view showing a sealing material 20B according to the third embodiment of the present invention.

In the sealing material 20B according to the third embodiment, a lip portion 20a1 formed by forming a slit 20f and disconnected is disposed so as to be vertically offset from an adjacent lip portion 20a2 that is disconnected. That is, the disconnected lip portions 20a1 and 20a2 are composed of an upper lip portion 20a1 and a lower lip portion 20a2.

Thereby, when the inner pot 6 is put in and taken out, the inner pot 6 is supported by the lip portions 20a1 and 20a2 arranged to be staggered and disconnected up and down to suppress the inner pot 6 tilt. Therefore, it is easier for the user to take out and put the inner pot 6. In addition, the sliding resistance between the inner pot 6 and the lip portions 20 a 1 and 20 a 2 is reduced, and the inner pot 6 accommodated in the inner pot accommodation portion 15 can be easily taken out.

<Effect>

(1) According to Embodiments 1 to 3 described above, the rice cooker 100 includes: a main body 1 including an inner pot accommodating portion 15 that accommodates the inner pot 6 and a heating device for heating the inner pot; a cover 3 that is connected to the main body 1 is connected with the hinge 2 and covers the upper part of the inner pot accommodating part 15 of the main body 1. It includes: a sealing material 20 having a lip 20 a that abuts from the main body 1 on the outside of the side wall of the inner pot 6 in a state where the inner pot 6 is housed in the main body 1; a retaining ring 40 that maintains the sealing material 20; The inner case 33 is part of the body 1. The lid body 3 forms a gap 31 with the main body 1 in a closed state. The inner case 33 constitutes an opening portion of the inner pot accommodation portion 15. The retaining ring 40 is located at a lower portion of the inner case 33 and maintains a position in the vertical direction inside the inner pot accommodation portion 15. The sealing material 20 is maintained between the retaining ring 40 and the inner case 33.

With this configuration, the outside of the side wall upper portion 6b of the inner pot 6 is in contact with the outside air while being housed in the main body 1. In addition, the sealing material 20 prevents the heat generated below the inner pot 6 from escaping upward. Therefore, the side wall of the inner pot 6 that is closer to the sealing material 20 can be cooled by the external air, and when the bubbles of rice soup poured during the heating process contact the upper side wall of the inner pot 6 In the inside, the bubbles of the rice soup are cooled and returned to the lower portion of the inner pot 6, so that the rice soup can be prevented from overflowing. Therefore, even if the input power is large or the duration of the input power is prolonged, the overflow of rice soup can be suppressed, and delicious rice can be cooked.

In addition, when the input power is increased in order to cook a delicious meal, it is not necessary to ensure that the rice soup separation box 10 has a sufficiently long flow path. Therefore, the volume ratio of the rice soup separation box 10 with respect to the product body does not need to be large, and the design restriction becomes smaller.

In addition, since the sealing material 20 is attached to the maintenance ring 40 and can maintain its shape in a ring shape, the sealing material 20 can be easily installed at a predetermined position when the rice cooker 100 is assembled. In addition, it is structured to sandwich the sealing material 20 by the retaining ring 40 and the inner case 33, and to provide the sealing material 20 with a large protruding portion 20b in the up-down direction, so that even when the rice cooker 100 is used, When the inner pot 6 is inserted or taken out, the sealing material 20 does not easily fall off. Thereby, the sealing material 20 can adopt a material that is more easily deformed elastically, and can make the contact between the sealing material 20 and the side wall of the inner pot 6 better, and the side wall and the inner pot of the inner pot 6 lower than the sealing material 20 The airtightness of the space formed by the inner side wall portion of the receiving portion 15 is higher

(2) According to Embodiments 1 to 3, the sealing material 20 includes a protruding portion 20b protruding outward from the lip portion 20a and fitted into the retaining ring 40, and a supported portion 20c connecting the lip portion 20a and the protruding portion 20b. The retaining ring 40 includes a recessed portion 40b for accommodating the protruding portion 20b on the upper surface side of the entire circumference of the retaining ring 40, and an inner rib 40c constituting a wall inside the recessed portion 40b. The inner rib 40c and the inner casing 33 are arranged at a distance L from each other in the up-down direction of the main body 1. The distance L is formed to be smaller than the dimension H2 in the up-down direction of the protruding portion 20b and to be the dimension H1 in the up-down direction of the supported portion 20c.

With the above configuration, in addition to the effects described in (1) above, the following effects can be obtained. The supported portion 20c located between the lip portion 20a and the protruding portion 20b, It is sandwiched between the inner case 33 and the inner rib 40 c of the retaining ring 40. Moreover, the distance L between the inner case 33 and the inner rib 40c of the retaining ring 40 is smaller than the dimension H2 of the protruding portion 20b in the up-and-down direction. Therefore, even if the protruding portion 20b is pulled out toward the inner side of the inner pot receiving portion 15 The protruding portion 20b does not pass through the distance L. Therefore, the sealing material 20 does not fall off from a predetermined position where it is mounted. Therefore, even if the inner pot 6 is repeatedly put in and taken out, the sealing material 20 can maintain the tightness of the space formed by the side wall of the inner pot 6 and the inner side wall portion of the inner pot accommodating portion 15 below the sealing material 20.

(3) According to Embodiments 1 to 3, the lip portion 20a is thinner than the protruding portion 20b, extends toward the inner side of the inner pot receiving portion 15, and is inclined from the opening of the inner pot receiving portion 15 toward the insertion direction of the inner pot 6. , Its inner diameter is smaller than the outer diameter outside the side wall of the inner pot 6.

With the above configuration, in addition to the effects described in (1) and (2), the following effects can be obtained. The sealing material 20 has an effect that the upper surfaces of the lip portions 20a, 20a1, and 20a2 are in contact with the inner pot 6 accommodated in the inner pot accommodating portion 15 of the main body 1, so that the heat generated below the inner pot 6 cannot escape to the upper side. In addition, the lip portions 20a, 20a1, and 20a2 hang down so that the lip portions 20a, 20a1, and 20a2 do not interfere when the inner pot 6 is accommodated in the inner pot accommodation portion 15 of the body 1.

(4) According to Embodiments 1 to 3, the recessed portion 40 b of the retaining ring 40 includes a protruding portion 40 d that extends upward in the interior. The protruding portion 20 b of the sealing material 20 includes a groove portion 20 d opened on the lower surface. The protruding portion 40d is inserted into the groove portion 20d.

With the above configuration, in addition to the effects described in (1) to (3), the following effects can be obtained. The sealing material 20 is fitted into the recessed portion 40 b of the retaining ring 40, and a projection 40 d is provided on the bottom surface of the recessed portion 40 b. The sealing material 20 is inserted into the groove portion of the sealing material 20 20d, so that the contact area between the sealing material 20 and the maintenance ring 40 can be increased. Therefore, the sealing material 20 is not easily detached from the state of being fitted into the maintenance ring 40, and is not easily detached when the rice cooker 100 is assembled, thereby facilitating assembly work. In addition, when the rice cooker 100 is used, because the inner pot 6 is inserted and taken out, a force is applied to the protruding portion 20 b toward the inner side of the inner pot accommodating portion 15, and the protruding portion 20 b is not easily removed from the retaining ring 40. The recessed portion is detached, and the sealing material 20 can be maintained in an assembled state.

(5) According to Embodiments 1 to 3, the inner pot accommodating portion 15 includes a heat radiating plate 34 that radiates heat generated by the heating device to the inside of the inner pot accommodating portion 15. The heat release plate 34 constitutes an inner side wall portion of the inner pot accommodating portion 15 and is provided at a lower portion of the retaining ring 40.

With the above configuration, in addition to the effects described in (1) to (4) above, the following effects can be obtained. The retaining ring 40 is supported from the lower side by the upper end portion of the heat release plate 34, and can maintain the positions of the retaining ring 40 and the sealing material 20 in the vertical direction.

(6) According to Embodiments 1 to 3, the outer surface of the side wall of the inner pot 6 projects upward from the inner pot accommodation portion 15.

(7) The inner pot 6 has a flange 6a extending outward in the radial direction at the uppermost portion. The main body has a plurality of support bodies 19 protruding upward from the edge of the inner pot accommodating portion 15 to support the flange 6a.

With the above configuration, in addition to the effects described in (1) to (5), the following effects can be obtained. In a state where the inner pot 6 is accommodated in the main body 1, the upper portion 6 b of the side wall can be made to protrude from the inner pot accommodating portion 15 of the main body 1. Therefore, the upper portion 6b of the side wall of the inner pot 6 protrudes from the inner pot receiving portion 15 of the main body 1 to expose the outside of the upper portion of the side wall 6b when it is not supported by the plurality of support bodies 19. When the cover 3 is closed When closed, the outside of the side wall upper part 6b of the inner pot 6 and the outside air flowing in from the gap 31 between the main body 1 and the cover 3 come into contact.

(8) According to Embodiments 1 to 3, the maximum water level line 21 at the time of the maximum cooking amount of the inner pot 6 is located below the sealing material 20 that abuts against the outer wall of the inner pot 6.

With the above configuration, in addition to the effects described in (1) to (7) above, the following effects can be obtained. The highest water level line 21 at the time of the maximum amount of rice to be cooked in the inner pot 6 is located further below the sealing material 20 that abuts the outside of the inner pot 6. With such a structure, water and rice can be heated by the sealing material 20 in a state that the heat generated below the inner pot 6 does not escape to the upper side.

(9) In Embodiments 1 to 3, a plurality of protrusions 20e are formed on the lower surface near the tip of the lip.

With the above configuration, in addition to the effects described in (1) to (8), the following effects can be obtained. A plurality of protrusions 20e are formed on the lower surface near the ends of the lip portions 20a, 20a1, and 20a2. With this configuration, when the inner pot 6 is taken out, the lip portions 20 a, 20 a 1, and 20 a 2 are turned over so that the plurality of protrusions 20 e come into contact with the inner pot 6. Therefore, the lip portions 20a, 20a1, 20a2 and the inner pot 6 are in point contact with each other, which reduces sliding resistance and makes it easy to take them out. In addition, since the upper surfaces 20aa of the lip portions 20a, 20a1, and 20a2 have no protrusions 20e, when the inner pot 6 is accommodated in the inner pot accommodating portion 15 of the main body 1, it can be surely sealed, making it difficult for heat to escape upward.

(10) According to Embodiments 1 to 3, the lip portion 20a has unevenness on its surface.

With the above structure, in addition to the effects described in (1) to (9) above, the following effects can be obtained: the reduction between the inner pot 6 and the lip portions 20a, 20a1, and 20a2 is reduced. The sliding resistance makes it easy to place the inner pot 6.

(11) According to Embodiments 1 to 3, the outer surface of the inner pot 6 has unevenness on its surface.

With the above configuration, in addition to the effects described in (1) to (10) above, the following effects can be obtained: reducing the sliding resistance between the inner pot 6 and the lips 20a, 20a1, and 20a2, making it easy to place the inner pot 6.

(12) According to the second embodiment, a plurality of slits 20f are formed in the lip portion 20a. With the above configuration, in addition to the effects described in the above (1) to (11), the following effects can be obtained: The lips 20a, 20a1, and 20a2 are easily deformed, so that the inner pot 6 can be easily put in and taken out.

(13) According to the third embodiment, the lip portions 20a1 and 20a2 formed by the slits 20f and disconnected are arranged so that the adjacent lip portions that are disconnected are shifted up and down.

With the above configuration, in addition to the effects described in the above (1) to (12), the following effects can be obtained: the lip portions 20a1 and 20a2 that are formed by the slits 20f and disconnected are arranged so that the adjacent disconnected lips The parts 20a1 and 20a2 are arrange | positioned staggered up and down. With this configuration, when the inner pot 6 is put in and taken out, the disconnected lip portions 20a1 and 20a2 arranged upside-down and staggered support the inner pot 6 and suppress the inner pot 6 from tilting. Therefore, the user can easily put in and take out the inner pot 6.

In addition, it was envisaged to appropriately combine the structures of the above embodiments. In addition, all the features of the embodiments disclosed above are illustrative and not limiting of the present invention. The scope of the present invention is not defined by the above description, but is defined by the scope of patent application, which includes all changes within the scope of equal scope of patent application.

Claims (13)

A rice cooker includes: a main body including an inner pot accommodating portion for accommodating an inner pot and a heating device for heating the inner pot; a cover body connected to the main body with a hinge and covering the inner pot accommodating of the main body The upper part of the part; a sealing material having a lip portion abutting the outside of the side wall of the inner pot from the main body in a state where the inner pot is accommodated in the main body; a retaining ring for maintaining the sealing material; and A part of the main body of the inner shell; wherein: the lid body, in a closed state, forms a gap with the main body; the inner shell, which constitutes an opening portion of the inner pot receiving portion; the maintenance ring, which is located at the The lower part of the inner case maintains a vertical position inside the inner pot receiving portion; the sealing material is maintained between the retaining ring and the inner case; the inner pot abuts the sealing material more than it Is located further above the outside of the side wall, and is in contact with outside air flowing in through the gap. The rice cooker according to item 1 of the patent application scope, wherein: the sealing material includes: a protrusion protruding from the lip to the outside and embedded in the retaining ring; and a blanket connecting the lip and the protrusion The support portion; the retaining ring includes: a recessed portion for accommodating the protruding portion on the upper side of the entire circumference of the retaining ring; and an inner rib constituting a wall on the inner side of the recessed portion; The up-down direction of the body; the distance is smaller than the size of the protruding portion in the up-down direction and greater than the size of the supported portion in the up-down direction. According to the rice cooker described in item 2 of the patent application scope, the lip portion is a thin plate shape, extends toward the inside of the inner pot receiving portion, and is inclined from the opening portion of the inner pot receiving portion toward the insertion direction of the inner pot. . The rice cooker according to item 2 or 3 of the scope of patent application, wherein: the recessed portion of the retaining ring includes: a protruding portion extending upward inward; the protruding portion of the sealing material includes a groove portion opened below; the The protruding portion is inserted into the groove portion. The rice cooker according to any one of claims 1 to 3, wherein: the inner pot accommodating portion includes a heat release plate that radiates heat generated by the heating device to the inner side of the inner pot accommodating portion; The heat release plate constitutes an inner side wall portion of the inner pot accommodating portion, and is disposed at a lower portion of the maintenance ring. According to the rice cooker according to any one of claims 1 to 3, the outer surface of the side wall of the inner pot projects upwards from the inner pot receiving portion. The rice cooker according to any one of claims 1 to 3, wherein: the inner pot has a flange extending outward in the radial direction at the uppermost part; and the body is in the inner pot receiving part The edge of has a plurality of supports protruding upward to support the flange. According to the rice cooker described in any one of claims 1 to 3, the maximum water level at the time of the maximum rice cooking amount of the inner pot is located at the sealing material abutting on the outside of the side wall of the inner pot Lower position. According to the rice cooker described in any one of claims 1 to 3, a plurality of protrusions are formed on the lower surface near the tip of the lip. According to the rice cooker according to any one of claims 1 to 3, the lip has unevenness on the surface. According to the rice cooker according to any one of claims 1 to 3 of the scope of patent application, the outer surface of the inner pot has unevenness on the surface. According to the rice cooker according to any one of claims 1 to 3, a plurality of slits are formed on the lip. According to the rice cooker described in item 12 of the scope of the patent application, the lip portion formed by the slit and disconnected is arranged to be offset from the adjacent lip portion that is disconnected up and down.