JP2007259951A - Rice cooker - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve a dew blowing-off performance of an inner lid without enlarging the heat quantity of an electric heater and stabilize the attachment state of the inner lid while detachably attaching the inner lid to an outer lid without providing a hook mechanism between the inner lid and an outer lid body. <P>SOLUTION: This rice cooker is provided with an attachment shaft 26 on the side of the outer lid body 20 and an elastic member 33 having an insertion port 33a of the attachment shaft 26 in the side of the inner lid 30; the insertion port 33a is pushed around the attachment shaft 26 and elastically engaged together to attach the inner lid 30 to the outer lid body 20; an upper face outer circumferential part 31 of the inner lid 30 is formed into a contact state with the lower face of the outer circumferential part 24a of a heater cover in the elastic engagement state, and a knob part 33d is provided integrally with the elastic member 33 and projecting to the lower face of the inner lid 30 in an axially linear arrangement relative to the insertion port 33a. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a rice cooker, and particularly to an inner lid mounting structure.

  Conventionally, an outer lid body that opens and closes a container with an open upper end and an inner lid that is attached to and detached from the outer lid body, and a heater cover that heats the inner lid is disposed on the lower surface of the outer lid body. There is a rice cooker.

  The inner lid and the heater cover are plate-like from the viewpoint of thermal efficiency and space saving, and are generally formed by sheet metal processing of a metal plate. In addition, an electric heater is provided on the upper surface side of the heater cover. When the temperature is kept, the heater is heated to radiate from the lower surface of the heater cover to the upper surface of the inner lid, and the inner lid is heated to condense on the lower surface of the inner lid. Is prevented from occurring.

  As a conventional inner lid mounting structure, an inner lid set is configured by fitting a lid packing that seals between the inner lid and the outer peripheral edge of the inner lid, and fixing the packing to the inner lid with a ring member. Yes (see, for example, Patent Document 1).

  In the case of the inner lid mounting structure as in the above-mentioned Patent Document 1, it is possible to securely mount the lid packing, but it is necessary to provide a hook mechanism on the outer lid body side, which is expensive.

  As another inner lid mounting structure, there is a rice cooker in which the inner lid is detachably attached to the mounting shaft protruding from the lower surface of the outer lid body via a packing (for example, see Patent Document 2). ).

  In the inner lid attaching / detaching structure as described in the above-mentioned Patent Document 2, the packing is composed of a seal portion in close contact between the mounting shaft and the mounting hole of the inner lid, and a hook-shaped expansion / contraction portion. When the upper end of the expansion / contraction part of the packing is pressed against the lower surface of the outer lid body, the peripheral edge of the inner lid is elastically pressed against the flange portion of the inner pot. For this reason, the inner lid can be moved in the vertical direction or tilted in all directions within the range of expansion / contraction of the expansion / contraction portion at the central attachment portion.

  Further, in the above attachment state, a gap is provided between the outer periphery of the inner lid and the lower surface of the outer lid body. When removing the inner lid, a finger is inserted into the gap and the inner lid is moved downward. The packing can be removed from the mounting shaft.

JP 2000-14537 A JP 10-201619 A

  However, in the inner lid mounting structure as described in Patent Document 2, there is no contact portion between the plate surface of the inner lid and the heater cover, and the inner lid is heated exclusively by radiant heat from the lower surface of the heater cover. For this reason, in order to raise the temperature of the inner lid during heat retention and improve the exposure performance, it is necessary to increase the amount of heat generated by the electric heater, which is contrary to energy saving.

  Further, in the inner lid mounting structure as in the above-mentioned Patent Document 2, in the mounted state, the inner lid is attached to the mounting shaft via the packing, and the finger is placed between the outer periphery of the inner lid and the lower surface of the outer lid body. The inner lid wobbles around the packing, and a stable inner lid attachment could not be obtained.

  SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to increase the amount of heat generated by the electric heater while allowing the inner lid to be removed from the outer lid without providing a hook mechanism between the inner lid and the outer lid body, while allowing the inner lid to be removed from the outer lid. It is to improve without stabilizing the mounting state of the inner lid.

  In order to achieve the above object, the present invention includes an outer lid body that opens and closes a container with an open upper end, and an inner lid that is attached to and detached from the outer lid body. In the rice cooker in which the heater cover for heating the lid is arranged, one of the outer lid body and the inner lid is provided with an attachment shaft protruding toward the other side, and the other is provided with an insertion port for the attachment shaft, By pushing the mounting shaft or the insertion port on the inner lid side into the insertion port or the mounting shaft on the outer lid body side, the mounting shaft and the insertion port are elastically engaged with each other, whereby the inner lid is moved to the outer lid body. In the elastic engagement state, the outer periphery of the upper surface of the inner lid is in contact with the heater cover, and the inner lid is attached to the mounting shaft or the insertion port on the inner lid side. On the other hand, it is picked so that it protrudes from the lower surface in a linear arrangement in the axial direction. It is obtained by adopting a configuration in which a.

  In the above configuration, the inner lid is formed by pressing the mounting shaft or the insertion port on the inner lid side into the insertion port or the mounting shaft on the outer lid body side and elastically engaging the mounting shaft and the insertion port. Can be attached to the outer lid, so that the inner lid can be attached to the outer lid without providing a hook mechanism.

  Here, in the above configuration, since the upper surface outer peripheral portion of the inner lid is in contact with the heater cover in the elastic engagement state, a heat transfer path is provided between the inner lid and the heater cover. It is formed. As a result, the heat transfer efficiency between the inner lid and the heater cover is improved as compared with the case using only radiant heat. Therefore, even if the amount of heat generated by the electric heater is not increased, the performance of exposing the inner lid is improved.

  Moreover, in the said structure, since the upper surface outer peripheral part of the said inner lid contacts with the said heater cover in the said elastic engagement state, the wobbling of the said inner lid centering on the said attachment shaft or the said insertion port is prevented. Therefore, the attached state of the inner lid is stabilized.

  Further, in the above configuration, since the knob is provided on the inner lid so as to protrude from the lower surface in a linear arrangement in the axial direction with respect to the mounting shaft or the insertion port on the inner lid side, Even when the outer peripheral surface of the upper surface of the inner lid is in contact with the heater cover in the combined state, the elastic cover is released by pulling the knob in the axial direction, so that the inner lid is moved to the outer lid body. Can be removed from.

  In the said structure, the structure which made the upper surface outer peripheral part of the said inner lid contact the outer peripheral part of the said heater cover is employable. According to this configuration, since the contact length in the circumferential direction between the inner lid and the heater cover becomes as large as possible, the improvement of the heat transfer efficiency and the stabilization of the attachment of the inner lid are achieved to the maximum. be able to.

  Moreover, in the said structure, the said attachment shaft or the said insertion port by the side of the said inner cover is further pushed in from the state which the upper surface outer peripheral part of the said inner cover and the said heater cover contacted the said attachment shaft and the said insertion port. It is possible to adopt a configuration that is provided in a relationship of elastic engagement. According to this configuration, since the elastic engagement state is obtained after further pressing from the contact state between the upper surface outer peripheral portion of the inner lid and the heater cover, the pressure that presses the upper outer peripheral portion of the inner lid against the heater cover. As a result of being loaded on the inner lid, more reliable contact can be obtained.

Moreover, in the said structure, the cover packing fitted to the outer periphery of the said heater cover is provided, and the structure which made the upper surface outer peripheral part of the said inner cover smaller than the inner peripheral part of the said cover packing is employable. . According to this configuration, since the lid packing is fitted to the outer peripheral edge of the heater cover, it is possible to achieve both the equipment of the lid packing and the heat conduction.
Here, since the outer peripheral portion of the upper surface of the inner lid is made smaller than the inner peripheral portion of the lid packing in the axial direction, the inner lid that is moved in the axial direction when the inner lid is attached, and the heater cover It is possible to prevent the lid packing from being caught between the two.

  As a more specific configuration, if a configuration in which the mounting shaft or the insertion port on the inner lid side and the knob are provided integrally, the number of members associated with the provision of the knob is increased. Can be prevented.

  By adopting a configuration in which the insertion port is formed on the inner periphery of the elastic member and the outer periphery of the elastic member is fitted to the inner periphery of the inner lid or the through hole of the heater cover, the installation of the insertion port is pushed in. You can only do it.

  Moreover, the structure which provided the said attachment axis | shaft and the said insertion port so that the outer lid body might be opposed to the diameter center of the inner pot accommodated in the said container body can be employ | adopted. According to this configuration, since the eccentric contact of the inner lid, the heater cover, and the inner pot is prevented, the contact between the outer peripheral portion of the upper surface of the inner lid and the heater cover can be further stabilized.

  As described above, according to the present invention, the above-described solution means allows the inner lid to be removed from the outer lid without providing a hook mechanism between the inner lid and the outer lid body, while allowing the inner lid to be attached to and detached from the outer lid. Can be improved without increasing the amount of heat generated by the electric heater, and the attached state of the inner lid can be stabilized.

Hereinafter, the rice cooker which concerns on 1st Embodiment of this invention is demonstrated based on an accompanying drawing.
As shown in FIG. 1 and FIG. 2, the rice cooker according to the first embodiment includes an outer lid body 20 that opens and closes a bowl body 10 with an open top end, and an inner lid 30 that is attached to and detached from the outer lid body 20. ing.

  The body 10 includes a shoulder 11 having an open upper end, a body 12 fitted up and down with a side lower end of the shoulder 11, and a bottom fitted up and down with a side lower end of the body 12 13.

  The outer lid body 20 is attached to the rear portion of the shoulder portion 11 by being biased toward the opening side by a hinge mechanism, and is engaged with the shoulder portion 11 by the lid hook mechanism 21 in the closed state. The upper end open part is closed.

  The outer lid body 20 includes an outer lid member 22 having an exterior surface continuous with the exterior surface of the shoulder portion 11, a lid ring member 23 serving as a mounting base for the lid hook mechanism 21, the outer lid member 22, and the like, and a lid ring. A heater cover 24 is provided on the lower surface of the outer lid 20 so as to cover the lower circular recess 23a of the member 23.

  The heater cover 24 is formed using a metal plate as a material, and is attached to the lid ring 23 by screwing or the like.

  The heater cover 24 has a circular planar shape, and the center thereof is located on an axis C in the vertical direction passing through the center of the diameter of the inner pot 40 accommodated in the vessel 10 with the outer lid 20 closed.

  As shown in FIGS. 1 and 3, the outer peripheral portion 24 a of the heater cover 24 is folded back toward the center to increase the strength. The inner peripheral groove portion of the lid packing 25 is fitted to the outer peripheral edge of the heater cover 24 to the middle in the radial direction of the outer peripheral portion 24a. The lip portion 25a of the lid packing 25 is pressed against the upper end circumference of the inner pot 40 accommodated in the container body 10 with the outer lid body 20 closed.

  As shown in FIGS. 2 and 3, the radially inner portion of the heater cover 24 from the outer peripheral portion 24 a is a circular heat radiating surface 24 b. On the upper surface of the heat radiating surface 24b, although not shown, an electric heater and a lid sensor for predicting the amount of rice cooking from the temperature change of the inner lid during rice cooking are arranged. Note that a steam hole 24c communicating with a steam chamber 23b provided integrally with the lid ring member 23 is formed in the heat radiating surface 24b.

  The center of the heat radiating surface 24b coincides with the center of the heater cover 24, and the central portion including the periphery thereof is recessed one step upward. A downward mounting shaft 26 protruding from the lower surface of the heater cover 24 is provided at the center of the heat radiating surface 24b.

  The upper end portion 26a of the mounting shaft 26 is a split groove. The mounting shaft 26 is fixed to the heater cover 24 by crushing the split groove in a state where the upper end portion 26a is passed through the center through hole 24d of the heat radiating surface 24b and the ring seal 27 for steam seal. The inclination of the mounting shaft 26 is prevented by the crushed upper end portion 26 a coming into contact with the heater cover 24.

  The protruding portion of the mounting shaft 26 is a columnar shape whose axis C is the center of the shape when the outer lid 20 is closed, and a radially outward flange 26b is formed on the outer periphery of the lower end thereof. The flange portion 26b has substantially the same height as the lower surface of the outer peripheral portion 24a of the heater cover 24.

  The inner lid 30 is made of a metal plate and has a circular planar shape. The center of the inner lid 30 is located on the extension of the axis C and serves as a through hole 32. The outer peripheral portion 31 of the upper surface of the inner lid 30 is folded back toward the center, and has higher strength than the other portions.

  An elastic member 33 is formed on the inner periphery of the through hole 32. The elastic member 33 has an insertion port 33a of the mounting shaft 26 formed on the inner periphery.

  The insertion port 33a includes an inner flange portion 33b having an inner diameter smaller than the outer diameter of the flange portion 26b of the mounting shaft 26, and a cylindrical portion 33c in which the flange portion 26b that has passed through the inner flange portion 33b is accommodated.

  The outer periphery of the elastic member 33 has a groove-like portion, and when the elastic member 33 is pushed in, it can be detachably fitted to the inner periphery of the through hole 32. This fitting has a strength that does not come off when being inserted into or removed from the mounting shaft 26.

Here, FIG. 4A shows the moment when the upper surface outer peripheral portion 31 of the inner lid 30 and the outer peripheral portion 24a of the heater cover 24 come into contact with each other. As shown in FIGS. 3 and 4A, when the mounting shaft 26 and the insertion port 33a face each other and the inner lid 30 and the heater cover 24 face each other vertically, the outer peripheral portion 31 on the upper surface of the inner lid 30 It is higher than the other plate portion of the lid 30. Further, the inner flange portion 33b of the insertion port 33a is at a position lower than the upper surface outer peripheral portion 31 of the inner lid 30, but the height difference between the inner flange portion 33b and the upper surface outer peripheral portion 31 is different from that of the mounting shaft 26 of the heater cover 24. Less than the surrounding upward recess.
On the other hand, the lower surface of the heater cover 24 is substantially flat except for the periphery of the mounting shaft 26.
Therefore, when the inner lid 30 is brought close to the heater cover 24 with the upper surface outer peripheral portion 31 of the inner lid 30 facing the outer peripheral portion 24a of the heater cover 24, other plate portions other than the upper outer peripheral portion 31 of the inner lid 30 are the heater cover. 24, the insertion port 33 a can be pushed into the mounting shaft 26, and the upper surface outer peripheral portion 31 can be brought into contact with the lower surface of the outer peripheral portion 24 a of the heater cover 24.

  By the above pushing, the insertion port 33a is elastically deformed to expand the inner diameter of the inner flange portion 33b. When the inner flange portion 33b passes through the flange portion 26b, the flange portion 26b enters the cylindrical portion 33c and the insertion port 33a is elastic. As shown in FIG. 4B, the collar portion 26b and the inner collar portion 33b are elastically engaged in the removal direction. This elastic engagement has a strength that does not come off with the weight of the inner lid 30. For this reason, the inner lid 30 is attached to the attachment shaft 26 of the outer lid body 20 as shown in FIG.

  Here, at the moment when the upper surface outer peripheral portion 31 of the inner lid 30 and the outer peripheral portion 24 a of the heater cover 24 come into contact with each other, the inner flange portion 33 b of the insertion port 33 a is positioned lower than the upper surface outer peripheral portion 31 of the inner lid 30. Therefore, it does not pass through the flange portion 26b of the mounting shaft 26. Therefore, after the insertion port 33a is further pushed in from the state shown in FIG. 4A, the inner flange portion 33b passes through the flange portion 26b and enters the elastic engagement state shown in FIG. 4B. For this reason, the pressure which presses the outer peripheral part 31 of the upper surface of the inner lid 30 against the heater cover 24 is loaded on the inner lid 30, so that more reliable contact can be obtained.

  In addition, the cylinder part 33c is provided larger than the collar part 26b. Thereby, the moment when the inner flange portion 33b passes through the flange portion 26b is maintained, and the lower end surface of the mounting shaft 26 strikes the inner bottom surface of the cylindrical portion 33c with momentum. This hit allows the user to know that the insertion of the insertion port 33a has been completed.

  Here, the upper surface outer peripheral portion 31 of the inner lid 30 is smaller than the inner peripheral portion of the lid packing 25 in the axial direction. That is, as shown in FIG. 4A, the natural state of the lid packing 25 is indicated by a two-dot chain line, and the minimum inner diameter d of the inner peripheral portion of the lid packing 25 is the tip inner diameter of the lip portion 25a. The maximum outer diameter D of the outer peripheral portion 31 of the upper surface of the inner lid 30 is set smaller than the minimum inner diameter d (note that the lead lines with the minimum inner diameter d and the maximum outer diameter D shown in FIG. Axial direction). Due to this diameter difference D-d, when the inner lid 30 is attached, the lip portion 25a in the natural state is placed between the outer peripheral portion 31 of the upper surface of the inner lid 30 and the outer peripheral portion 24a of the heater cover 24 that are moved in the axial direction. Is prevented from being bitten. The diameter difference D-d is usually at least 2 mm in consideration of molding errors and the like.

  As shown in FIGS. 2 to 4, the elastic member 33 is integrally provided with a knob 33 d so as to protrude from the insertion port 33 a and to the lower surface of the inner lid 30 in a linear arrangement in the axial direction. The knob portion 33d has a columnar shape, and a hook-shaped portion that prevents slipping is formed at the lower end. Here, the fitting strength of the elastic member 33 with respect to the inner lid 30 can withstand the pushing / pulling resistance during the above-described elastic engagement / disengagement. Since the knob portion 33d is provided on the inner lid 30 in this manner, the insertion port 33a is pushed or pulled in the axial direction with the inner lid 30 facing the heater cover 24 and holding the knob portion 33d. Thus, the above-described elastic engagement or disengagement is possible, and the inner lid 30 can be attached and detached without hindrance.

  In the first embodiment, for the material of the mounting shaft 26, an aluminum-based metal is used for the convenience of the upper end portion 26a being a split groove. However, as long as the rigidity and heat resistance required for mounting the inner lid 30 can be ensured. Without limitation, an appropriate metal, resin, or the like can be used. For example, stainless steel can be used when screwing is employed. On the other hand, the material of the elastic member 33 is not particularly limited as long as it can be elastically engaged with the mounting shaft 26, and silicone, heat-resistant rubber, or the like can be used.

  The first embodiment has the above-described configuration, and contacts the lower surface of the outer peripheral portion 24a of the heater cover 24 in the elastic engagement state. Therefore, the upper peripheral portion 31 of the inner lid 30 and the outer periphery of the heater cover 24 are in contact with each other. A heat transfer path is formed between the portion 24a. Therefore, in the first embodiment, the heat transfer efficiency between the inner lid 30 and the heater cover 24 is improved as compared with the case of only radiation. As a result, at the time of heat retention, the temperature of the inner lid 30 becomes relatively high without increasing the amount of heat generated by the electric heater, and the dewdrop performance is improved. Further, the detection delay of the lid sensor is also relatively small (see FIG. 1).

  Furthermore, in the above-described elastic engagement state, even if the inner lid 30 staggers around the insertion port 33a, the upper surface outer peripheral portion 31 of the inner lid 30 contacts the lower surface of the outer peripheral portion 24a of the heater cover 24. The lid 30 cannot wobble. Therefore, the attached state of the inner lid 30 is stable.

  Here, in the first embodiment, since the upper surface outer peripheral portion 31 of the inner lid 30 is in contact with the lower surface of the outer peripheral portion 24a of the heater cover 24, the contact length in the circumferential direction becomes as large as possible. Improvement of thermal efficiency and stabilization of attachment of the inner lid 30 can be achieved to the maximum extent.

  Further, in the first embodiment, the mounting shaft 26 and the insertion port 33a have an axis passing through the center of the diameter of the inner pot 40 accommodated in the vessel 10 with the outer lid 20 closed. Since it is on C, it faces the diameter center of the inner pot 40. For this reason, eccentric contact of the inner lid 30, the heater cover 24 and the inner pot 40 is prevented.

  In this 1st Embodiment, although the said insertion port 33a and the said knob | pick part 33d were provided as the integral elastic member 33, each can also be made into a separate member. Further, the corresponding portion of the mounting shaft 26 can be provided on the inner lid 30 side, and the corresponding portion of the elastic member 33 can be provided on the outer lid body 20 side.

A second embodiment of the present invention will be described with reference to FIG. In the following description, differences from the first embodiment will be mainly described, and the same components are denoted by the same reference numerals and description thereof will be omitted.
As shown in FIG. 5, the elastic member 50, which is a functional portion corresponding to the elastic member 33, has an insertion port 51, which is a functional portion corresponding to the insertion port 33a, in an open shape at the lower end. A second inner flange portion 51 a is formed at the inner peripheral lower end of the insertion port 51.

  The knob 52, which is a functional portion corresponding to the knob 33d, has a columnar shape having outer collars at both upper and lower ends. The upper end 52a of the knob 52 is pushed into the elastic member 50 until it passes through the second inner flange 51a, and is moved upward by a protrusion 51b formed in the middle of the inner periphery of the cylindrical portion of the insertion port 51. Is regulated. Therefore, the knob 52 is attached to the elastic member 50 by elastic engagement, and does not interfere with the lower end surface of the attachment shaft 26 when pushed into the attachment shaft 26.

A third embodiment of the present invention will be described with reference to FIG.
As shown in FIG. 6, in the third embodiment, a mounting shaft 60 that is a functional portion corresponding to the mounting shaft 26 is provided on the inner lid 30 side, and a function corresponding to the elastic member 33 is provided on the heater cover 24 side. The elastic member 61 which is a part is provided.

  An upper end flange 60a of the mounting shaft 60 protrudes from the upper surface of the inner lid 30, and is a functional portion corresponding to the flange 26b. The lower end knob portion 60b of the mounting shaft 60 protrudes from the lower surface of the inner lid 30, and is a functional portion corresponding to the knob portion 33d.

  The attachment shaft 60 is divided into an upper end flange portion 60a side and a lower end knob portion 60b side. Both parts 60a and 60b are integrated by press-fitting in a state where the plate portion of the inner lid 30 is sandwiched vertically through the central through hole of the inner lid 30. Thereby, the attachment shaft 60 is attached so as not to be inclined with respect to the vertical direction.

  On the other hand, the elastic member 61 is fitted to the inner periphery of the central through hole of the heater cover 24 on the outer periphery thereof. The insertion port 61a, which is a functional part corresponding to the insertion port 33a, faces downward.

  In the third embodiment, the inner lid 30 is attached to the insertion port 61a by pushing the attachment shaft 60 on the inner lid 30 side into the insertion port 61a on the heater cover 24 side.

  Here, in the fitted state, the upper surface of the elastic member 61 is in contact with or near the lower surface of the lid ring member 23. When the mounting shaft 60 is inserted, the elastic member 61 pushed upward is prevented by the lid ring member 23.

  In the third embodiment, since the upper surface of the elastic member 61 is closed and the outer periphery of the elastic member 61 is fitted to the inner periphery of the central through hole of the heater cover 24, the elastic member 61 acts as a steam seal. Make. Therefore, even if a through hole is formed in the heater cover 24, a steam sealing member corresponding to the ring packing 27 of the first embodiment can be omitted.

The fragmentary longitudinal cross-section which shows the whole structure of the rice cooker which concerns on 1st Embodiment The whole perspective view of the state which removed the inner cover in the open state of the outer cover body of the rice cooker shown in FIG. The expanded sectional view of the inner cover part of the rice cooker shown in FIG. (A) Enlarged sectional view showing a state at the moment when the upper surface outer peripheral portion of the inner lid in FIG. 1 and the heater cover are in contact with each other, (b) Enlarged sectional view showing an engaged state of the elastic member and the mounting shaft in FIG. The principal part expanded sectional view of the rice cooker which concerns on 2nd Embodiment. The principal part expanded sectional view of the rice cooker which concerns on 3rd Embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Body 11 Shoulder part 12 Body part 13 Bottom part 20 Outer cover body 21 Cover hook mechanism 22 Outer cover member 23 Cover ring member 23a Bottom circular recessed part 23b Steam chamber 24 Heater cover 24a Outer peripheral part 24b Heat radiation surface 24c Steam hole 24d Center through hole 25 Lid packing 25a Lip part 26, 60 Mounting shaft 26a Upper end part 26b Hook part 27 Ring packing 30 Inner cover 31 Upper surface outer peripheral part 32 Through holes 33, 50, 61 Elastic members 33a, 51, 61a Insertion port 33b Inner collar part 33c Tube Parts 33d, 52 Knob 40 Inner pan 51a Second inner collar 51b Projection 52a Upper end 60a Upper collar 60b Lower knob

Claims (7)

In a rice cooker comprising an outer lid body that opens and closes a container having an open upper end and an inner lid that is attached to and detached from the outer lid body, and a heater cover that heats the inner lid is disposed on a lower surface of the outer lid body ,
One of the outer lid and the inner lid is provided with a mounting shaft that protrudes toward the other side, the other is provided with an insertion port for the mounting shaft, and the mounting shaft or the insertion port on the inner lid side is provided with the mounting shaft. The inner lid can be attached to the outer lid body by pushing into the insertion port on the outer lid body side or the attachment shaft and elastically engaging the attachment shaft and the insertion port,
In the elastic engagement state, the outer periphery of the upper surface of the inner lid is in contact with the heater cover,
A rice cooker, wherein the inner lid is provided with a knob so as to protrude from the lower surface in a linear arrangement in the axial direction with respect to the mounting shaft or the insertion port on the inner lid side.   The rice cooker according to claim 1, wherein an outer peripheral portion of the upper surface of the inner lid is in contact with an outer peripheral portion of the heater cover.   When the mounting shaft or the insertion port on the inner lid side is further pushed from the state in which the outer peripheral surface of the inner lid and the heater cover are in contact with each other, the mounting shaft and the insertion port are elastically engaged. The rice cooker according to claim 1 or 2 provided.   A lid packing fitted to the outer peripheral edge of the heater cover is provided, and an upper surface outer peripheral portion of the inner lid is made smaller than an inner peripheral portion of the lid packing in the axial direction. The described rice cooker.   The rice cooker according to any one of claims 1 to 4, wherein the mounting shaft or the insertion port on the inner lid side and the knob are provided integrally.   The rice cooker according to any one of claims 1 to 5, wherein the insertion port is formed on an inner periphery of an elastic member, and an outer periphery of the elastic member is fitted to an inner periphery of the inner lid or the through hole of the heater cover.   The rice cooker according to any one of claims 1 to 6, wherein the attachment shaft and the insertion port are provided so as to face the center of the diameter of the inner pot accommodated in the container when the outer lid is closed. .

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