Electric cooker

Abstract

The invention provides an electric cooker which enables a user to easily notice that the position of an inner cover of a cover body is incorrect. The electric cooker (100) of the present invention is provided with: a main body (1) that accommodates a pot (5); a cover body (2); and an inner lid assembly (25) detachably attached to the lid body (2), the lid body (2) having: a support section (60) for locking the insertion section (53) of the inner lid assembly (25), the support section (60) having: width-direction positioning sections (63, 64) as a pair of left and right positioning sections for positioning the insertion section (53) in the left and right directions; and guide parts (67, 68) as a pair of left and right restricting parts, the guide parts (67, 68) restricting the insertion parts (53) from being locked to the support parts (60) when the insertion parts (53) abut against the guide parts (67, 68), the guide parts (67, 68) being formed closer to the pot (5) than the width direction positioning parts (63, 64), and the distance between the left and right guide parts (67, 68) being smaller than the distance between the left and right width direction positioning parts (63, 64).

Description

Technical Field

[0001] The invention relates to an electric rice cooker with an inner cover. Background Art

[0002] In the past, the following electric rice cooker is known: it has an inner cover that covers the opening of a pot for storing rice ingredients. For example, Patent Document 1 discloses the following electric rice cooker: it has a substantially circular inner cover (4) that is detachably mounted on the bottom surface of a cover (3). The inner cover (4) has: an inner cover fixing portion (4a) formed near the front end; and an inner cover rear end portion (4b) formed at the rear end. When the cover (3) is in an open state, the corresponding ends of the inner cover rear end portion (4b) of the inner cover (4) are respectively mounted on both sides of a locking mechanism (15) provided on the cover (3), and the inner cover fixing portion (4a) of the inner cover (4) is fixed to a fixing mechanism (12) provided on the cover (3), thereby mounting the inner cover (4) on the cover (3).

[0003] Prior art literature

[0004] Patent Literature

[0005] Patent Document 1: Japanese Patent Application Publication No. 2008-119074 Summary of the invention

[0006] The electric rice cooker of Patent Document 1 has the following problem: the user may not notice that the position of the inner cover (4) of the cover (3) is offset. As one of the main reasons for the position offset of the inner cover (4), the following reasons can be cited: the fixing portion (4a) is fixed to the fixing mechanism (12) in a state where one end of the rear end portion (4b) of the inner cover is not mounted on one side of the locking mechanism (15), and the inner cover (4) is installed on the cover (3) at an angle. In this case, steam may leak from between the pot (2) and the inner cover (4). In addition, the cover (3) may not be closed relative to the electric rice cooker body (1), or the inner cover (4) or the cover (3) may be damaged.

[0007] Therefore, in view of the above situation, an object of the present invention is to provide an electric rice cooker, which can make a user easily notice that the position of the inner cover in the cover body is incorrect.

[0008] The electric rice cooker of the present invention is characterized in that it comprises: a main body, which accommodates a pot; a cover body; and an inner cover assembly, which is detachably mounted on the cover body, the cover body having: a supporting portion for locking the insertion portion of the inner cover assembly, the supporting portion having: a pair of left and right positioning portions, which position the insertion portion in the left and right directions; and a pair of left and right limiting portions, which limit the insertion portion from being locked on the supporting portions when the insertion portion abuts against the limiting portions, the limiting portions being formed to be closer to the pot side than the positioning portions, and the interval between the left and right limiting portions being smaller than the interval between the left and right positioning portions.

[0009] Effects of the Invention

[0010] According to the present invention, when the insertion portion is not correctly positioned at the positioning portion, the inner cover assembly interferes with the wall portion, causing the angle of the inner cover assembly relative to the cover body to further increase, so that the user can easily notice that the position of the inner cover in the cover body is incorrect. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a perspective view showing a rice cooker according to one embodiment of the present invention.

[0012] Figure 2 It is a longitudinal sectional view of the electric rice cooker.

[0013] Figure 3 It is a three-dimensional view of the inner cover assembly.

[0014] Figure 4 (A) is a perspective view of the rice cooker with its lid opened. Figure 4 (B) is a perspective view of the rice cooker in a state where the lid body is opened and the inner lid assembly is removed.

[0015] Figure 5 is the above Figure 4 (B) Magnified view of box A.

[0016] Description of Reference Numerals

[0017] 1…main body, 2…cover body, 5…pot, 25…inner cover assembly, 53…insertion portion, 53-1…outer edge portion (end portion), 60…support portion, 61-23…curvature portion (contact positioning portion), 63, 64…width direction positioning portion (positioning portion), 65, 66…thickness direction positioning portion (connecting portion), 67, 68…guide portion (limiting portion), 100…rice cooker. DETAILED DESCRIPTION

[0018] Hereinafter, preferred embodiments of the heating cooker of the present invention will be described with reference to the accompanying drawings. In addition, common reference numerals are given to common parts in all the above drawings.

[0019] Figure 1 to Figure 5 An electric rice cooker 100 according to an embodiment of the present invention is shown. Based on the above-mentioned drawings, the overall structure of the electric rice cooker 100 according to the present embodiment is described. 1 is a main body, which is formed into an approximately rectangular shape with the front surface and the rear surface facing each other, the left side surface and the right side surface facing each other when viewed from above, and the upper part is open. 2 is a cover body that can be opened and closed to cover the upper surface opening of the main body 1. Like the main body 1, it is formed into an approximately rectangular shape with the front surface and the rear surface facing each other, the left side surface and the right side surface facing each other when viewed from above, and the upper surface is roughly flat. The main body 1 is formed into the following structure: it has an outer frame 3 that serves as an appearance component, and a pot storage part 4 that is open at the top. When the cover body 2 is opened, a bottomed cylindrical pot 5 that serves as a container for rice cooking ingredients, namely water or rice, is freely and detachably stored in the pot storage part 4. The pot housing portion 4 is composed of an upper frame 6 and an inner frame 7, and is formed as a bottomed cylinder as a whole. The upper frame 6 constitutes the upper and side portions of the pot housing portion 4 and is used to suspend the pot 5. The inner frame 7 is bowl-shaped and made of resin.

[0020] The pot 5 is made of aluminum 8, which has good thermal conductivity, as the main material, and a heating element 9 made of a magnetic metal plate such as ferrite stainless steel is joined from the lower side of the outer surface of the main material 8 to the bottom. In addition, a heating coil 11 is provided as a heating mechanism for electromagnetic induction heating of the heating element 9 of the pot 5 from the lower side of the pot 5 to the outer surface of the inner frame 7 facing the bottom surface. And, it is formed as follows: if a high-frequency current is supplied to the heating coil 11, the heating element 9 of the pot 5 is heated due to the alternating magnetic field generated by the heating coil 11, thereby heating the cooking ingredients in the pot 5 when cooking and keeping warm. In addition, a pot sensor 12 as a pot temperature detection mechanism is elastically in contact with the bottom of the outer surface of the pot 5.

[0021] A steam port 14 is formed on the upper surface of the lid 2 to discharge steam generated from the food in the pot 5 to the outside of the rice cooker 100. A lid operation body 15 as a lid opening mechanism is disposed in front of the upper surface of the lid 2 in an exposed state.

[0022] In addition to the steam port 14 and the cover operating body 15, a display operating unit 17 is provided on the upper surface of the cover 2. The display operating unit 17 mainly includes: a display mechanism 18 for displaying various information related to rice cooking, and is composed of, for example, an LCD (Liquid Crystal Display); an operating mechanism 19, which is composed of a push switch for starting rice cooking or selecting a rice cooking process; and a control PC (Printed Circuit) board 20, which is equipped with a control IC (not shown) for controlling the above-mentioned display mechanism 18, operating mechanism 19, and various parts of the display operating unit 17. In addition, an operating panel 21 for protecting the above-mentioned display mechanism 18, operating mechanism 19, or control PC board 20 is arranged above the display operating unit 17.

[0023] The cover body 2 is constructed to include: an outer cover 22, which serves as an appearance component; and an outer cover cover 23, which forms the lower part of the outer cover 22. The outer cover cover 23 is provided with: a metal heat sink 24 that makes stainless steel or aluminum acid-resistant and corrosion-resistant. An inner cover assembly 25, which serves as a lower component of the cover body 2, is arranged on the lower side of the cover body 2. The inner cover assembly 25 includes: an inner cover 26, which is made of a disc-shaped metal material having a diameter substantially the same as that of the upper opening of the pot 5 and covers the upper opening of the pot 5; and a cover gasket 27, which serves as an elastic component and is provided on the entire outer circumference of the inner cover 26 in order to seal between the inner cover 26 and the pot 5. As shown in FIG. Figure 1 As shown, when the lid 2 is closed, the lid gasket 27 formed in an annular shape abuts against the flange 28 that becomes the upper surface portion of the pot 5 or the inner surface of the upper end portion of the pot 5, thereby blocking the gap between the pot 5 and the inner lid 26, and the steam generated from the pot 5 can be sealed. The metal inner lid 26 made of stainless steel or aluminum to achieve acid and corrosion resistance is arranged on the outer side of the heat sink 24.

[0024] Inside the lid body 2, there are provided a lid heater 31 as a lid heating mechanism for heating the inner lid 26, a thermistor-type lid temperature sensor 32 for managing the temperature of the inner lid 26 by the lid heater 31, and a pressure regulating unit 33 for adjusting the pressure of the space inside the pot 5. In addition, inside the lid body 2, there is formed a steam discharge path 34 that connects the steam port 14 and the pressure regulating unit 33 as a passage for releasing the steam generated in the pot 5 to the outside.

[0025] The pressure regulating part 33 is provided with a pressure regulating valve 35 for opening and closing the steam discharge path 34 between the inside of the pot 5 and the steam port 14. The pressure regulating valve 35 is linked to a solenoid 36 provided inside the cover 2, and the solenoid 36 moves the pressure regulating valve 35 up and down in the following manner: when the steam in the pot 5 is released to the outside, the steam discharge path 34 is opened, and when the inside of the pot 5 is made into a pressurized or depressurized state, the steam discharge path 34 is closed. In addition, the structure is formed as follows: when pressurized, the rice cooking ingredients in the pot 5 are heated by high-frequency power supply to the heating coil 11, and the rice cooking ingredients boil to generate steam. When the steam fills the pot 5 and the internal pressure of the pot 5 reaches a predetermined value, the spring 37 provided in the pressure regulating valve 35 is overcome, and the spring 37 is contracted upward, and the pressure regulating valve 35 moves upward to open the steam discharge path 34, thereby maintaining the pressure in the pot 5 at atmospheric pressure or above.

[0026] Reference numeral 38 denotes a heating substrate assembly that is disposed inside the main body 1 and is unitized by including a heating control mechanism 39. In order to electrically control various parts of the rice cooker 100 in combination with the display operation unit 17, the heating control mechanism 39 is configured to include a control IC such as a CPU, a memory that can store various information or data and can read and write, or a microcomputer (microcomputer) having a timer that can measure the time related to cooking, and the like, and electrically controls various parts of the rice cooker 100. Specifically, the heating substrate assembly 38 is connected to the display operation unit 17, and the heating control mechanism 39 receives various temperature monitoring signals from the pot sensor 12 or the lid temperature sensor 32, and outputs heating control signals to the heating coil 11 or the lid heater 31, respectively, and outputs a driving control signal to the solenoid 36 that actuates the pressure regulating valve 35.

[0027] Reference numeral 41 denotes a hinge portion, which comprises a hinge shaft 42 disposed at the rear lower portion of the cover body 2, and a hinge spring 43 formed of a coil spring or the like and disposed at the upper rear portion of the main body 1. Furthermore, the following structure is formed: if the cover body operating body 14 disposed on the front upper surface of the cover body 2 is pressed, the engagement between the main body 1 and the cover body 2 is released, and the cover body 2 is opened by the hinge spring 43 with the hinge shaft 42 as the rotation center.

[0028] In addition, a hinge cover 44 is installed behind the hinge part 41 to cover the connection part of the hinge part 41 for the main body 1 and the lid body 2. The hinge cover 44 is configured to be coplanar with the outer frame 3 and the outer cover 22. Therefore, the outer frame 3, the outer cover 22 and the hinge cover 44 form the outer shape of the rice cooker 100.

[0029] The hinge shaft 42 supports the main body 1 and the cover 2 so that they can be opened and closed freely. The hinge spring 43 is locked to the outer cover 23 to always apply force to the cover 2 in the opening direction. On the substantially opposite side of the hinge shaft 42, which is the rotation center of the cover 2, there is arranged: a clamp 45 that is linked to the cover operating body 14, and the clamp 45 is supported on the outer cover 23 through a clamp shaft 46. In addition, on the outer frame 3, and on the substantially opposite side of the hinge portion 31, there is arranged: a clamp support portion 47 (see FIG. 1 ) that engages with the clamp 45. Figure 4 ).

[0030] The clamping member 45 provided on the cover body 2 rotates around the clamping shaft 46 as the central axis and engages with the clamping member support portion 47 provided on the main body 1. The main body 1 and the cover body 2 are kept in a closed state by the engagement of the clamping member 45 and the clamping member support portion 47. On the other hand, when the cover body 2 is opened, the cover body operating body 15 is pressed to rotate the clamping member 45 in the opposite direction, thereby releasing the engagement between the clamping member 45 and the clamping member support portion 47.

[0031] Reference numeral 48 is a pressure reducing mechanism for making the pressure inside the pot 5 lower than the normal atmospheric pressure when the lid 2 is closed on the main body 1. The pressure reducing mechanism 48 is configured such that after the pot 5 is stored in the pot storage portion 4 and the lid 2 is closed, the solenoid 36 is energized to move the pressure regulating valve 35 downward, and the pressure inside the sealed pot 5 is reduced while the steam discharge path 34 is closed. In addition, when the pressure inside the pot 5 is lower than the atmospheric pressure by a certain value, the operation of the pressure reducing pump 49, which is the operation source of the pressure reducing mechanism 48, is stopped, and the inside of the inner kettle 1 is kept in a reduced pressure state. Furthermore, when the pressure inside the pot 5 is restored from the reduced pressure state to the same pressure as the outside atmosphere, the operation of the pressure reducing pump 49 is stopped, and the path (not shown) connecting the pressure reducing pump 49 and the inside of the pot 5 is opened. That is, the pressure reducing mechanism 48 is configured to also serve as a pressure recovery mechanism for restoring the pressure inside the pot 5 from the reduced pressure state to the same pressure as the outside atmosphere.

[0032] Figure 3 2 is a perspective view of the inner cover assembly 25 which is equivalent to the inner cover of the present embodiment. Referring to this figure, 51 is a hole for steam discharge connected to the steam discharge path 34. The pressure regulating valve 35 opens and closes the hole 51 to open / close the steam discharge path 34. In addition, 52 is a hole for pressure reduction connected to the pressure reducing pump 49. The pressure reducing pump 49 reduces the internal pressure of the pot 5 by means of the hole 52.

[0033] 53 is an insertion portion that can be inserted into the space between the positioning portions 61-3 and 61-4 described later. The insertion portion 53 is made of resin and is roughly formed into a plate shape in a fish plate shape when viewed from above. Moreover, when the inner cover assembly 25 is installed on the cover body 2, the outer edge portion 53-1 that abuts against the curvature portion 61-23 described later is formed to have a curvature that is roughly the same as the curvature portion 61-23, so that the insertion portion 53 is easily inserted into the space between the positioning portions 61-3 and 61-4. In addition, it is difficult to cause positional displacement after insertion, thereby improving the so-called placement. Here, the width of the insertion portion 53 of the present embodiment is about 1 / 3 of the inner cover 26, which is formed narrower than the previous structure. Therefore, when any of the ends 53-2, 53-2 of the insertion portion 53 is not positioned by the positioning portions 61-3, 61-4 and the inner cover assembly 25 is located at a position inclined relative to the outer cover 23, the angle of the inclined inner cover assembly 25 will be greater than the previous angle, so that the user can easily notice that the position of the inner cover assembly 25 of the cover body 2 is incorrect and the inner cover assembly 25 is inserted obliquely. In addition, a hole or a cutout portion can be formed in, for example, the central portion of the outer edge portion 53-1 of the insertion portion, and the hole or the cutout portion functions as a concave portion for condensation water to drip. For example, when the cover body 2 is opened and made vertical after cooking, the condensation water flowing from the back of the inner cover 26 to the back of the insertion portion 53 can be returned to the pot 5 via the curvature portion 61-23 by means of the hole or the cutout portion.

[0034] Reference numeral 54 denotes an inner cover engaging support portion that can engage with the inner cover engaging portion 61-5 described later. In the present embodiment, the inner cover engaging support portion 54 is made of resin and is formed into a substantially plate-like shape, and is configured such that the insertion portion 51 is inserted into the space between the positioning portions 61-3 and 61-4, and the inner cover engaging portion 61-5 is engaged with the inner cover engaging support portion 54, thereby fixing the inner cover assembly 25 to the outer cover cover 23 of the cover body 2.

[0035] 55, 56 are handles made of resin and arranged near the left and right sides of the inner cover snap-fit ​​support portion 54. When the inner cover assembly 25 is installed on the outer cover 23, the user can hold the handles 55, 56 to perform the operation, and can perform the installation operation without touching the inner cover 26 or the cover gasket 27 with his hands. In addition, confusion between the front and back sides of the inner cover assembly 25 can be avoided during installation. In addition, the handle portions 55 and 56 are formed to have: outer extension portions 55-1 and 56-1, which extend toward the outer side of the inner cover 26; lower extension portions 55-2 and 56-2, which extend from the outer end portions of the outer extension portions 55-1 and 56-1 toward the bottom surface of the cover body 2; and legs 55-3 and 56-3, which extend from the lower end portions of the lower extension portions 55-2 and 56-2 toward the outer side of the inner cover 26. When the insertion portion 53 is inserted into the space between the positioning portions 61-3 and 61-4 and the inner cover assembly 25 is pressed into the outer cover 23, it is easy to hold the legs 55-3 and 56-3 and perform the pressing operation.

[0036] Figure 4 is a perspective view of the rice cooker 100 with the lid 2 opened. Figure 4 (A) shows the state where the inner cover assembly 25 is assembled. Figure 4 (B) shows the state where the inner cover assembly 25 is removed. Referring to this figure, 61 is a recessed portion provided on the bottom surface of the outer cover 23. The recessed portion 61 mainly comprises: an inner cover receiving recessed portion 61-1, which receives the inner cover assembly 25; a pot sealing recessed portion 61-2, which is provided on the bottom surface side of the cover body of the inner cover receiving recessed portion 61-1. Figure 4 left and right pair of positioning portions 61-3, 61-4, which can hold the insertion portion 53; and the inner cover stopper portion 61-5, which can engage the inner cover support portion 54 to stop.

[0037] The inner cover receiving recess 61-1 forms a substantially cylindrical space and a space for the insertion portion 53 as one body, and a cylindrical mechanism portion 62 protrudes from the bottom surface of the outer cover 23 into the space. The bottom surface of the mechanism portion 62 is provided with: a heat sink 24, a cover temperature sensor 32, or a pressure regulating portion 33, etc., and a steam exhaust path 34 is formed near the center of the mechanism portion 62. Moreover, the structure is such that when the inner cover assembly 25 is received in the inner cover receiving recess 61-1 and the inner cover assembly 25 is assembled in the recess 61, the heat sink 24, the cover temperature sensor 32, or the pressure regulating portion 33 abut against the inner cover 26, thereby closing the opening of the steam exhaust path 34.

[0038] The structure is formed as follows: in addition to the space of the approximately cylindrical shape, the pot-sealing recess 61-2 is integrally formed with: the space for the handles 55 and 56, the space for the clamp 45, and the space for the insertion portion 53. In the space in the pot-sealing recess 61-2, the lid gasket 27 abuts against the flange 28 and the inner surface of the upper end of the pot 5, so that the inner lid 26 covers the upper opening of the pot 5. In this embodiment, the space for the insertion portion 53 in the inner lid receiving recess 61-1 and the space for the insertion portion 53 in the pot-sealing recess 61-2 are substantially the same when viewed from above and are formed as one body. When the lid body 2 is closed, the space in the pot-sealing recess 61-2 is kept in a substantially sealed state, and the heat from the upper part of the pot 5 or the inner lid 26 is suppressed from being released from the space in the pot-sealing recess 61-2 to the outside. The pot-sealing recess 61-2 is formed such that the space of the approximately cylindrical shape is substantially concentric with the inner cover receiving recess 61-1 and has a curvature greater than the flange 28 of the pot 5, and the curvature portions 61-21, 61-22, 61-23 having the curvature are provided in the pot-sealing recess 61-2. Therefore, the curvature portions 61-21, 61-22, 61-23 have an arc shape along the shape of the pot 5. In addition, the pot-sealing recess 61-2 is configured to be larger than the space of the approximately cylindrical shape, so that when the lid 2 is closed, the pot 5 having the flange 28 does not interfere with the pot-sealing recess 61-2.

[0039] The inner cover stopper 61-5 holds the inner cover assembly 25 in the recess 61 by locking the inner cover engagement support 54. The inner cover stopper 61-5 is provided at the front portion of the recess 61. Figure 4 As shown, the structure is formed to be located at the upper part of the bottom surface of the cover body 2 when the cover body 2 is opened. Therefore, when the inner cover assembly 25 is mounted on the outer cover 23, it is easy to press the inner cover engagement support portion 54 into the inner cover engagement support portion 61-5. In addition, in the present embodiment, the inner cover engagement support portion 61-5 is formed to be structured as follows: when the inner cover engagement support portion 54 has an angle greater than a predetermined angle relative to the outer cover 23, the inner cover engagement support portion 54 cannot be engaged. When the inner cover assembly 25 is located at a position inclined relative to the outer cover 23 and the position of the inner cover assembly 25 of the cover body 2 is incorrect, the inner cover engagement support portion 61-5 cannot be engaged with the inner cover engagement support portion 54. Therefore, the user can easily notice that the inner cover assembly 25 is inserted obliquely.

[0040] The positioning parts 61-3 and 61-4 are configured such that the insertion part 53 is inserted into the space between the positioning parts 61-3 and 61-4 and is held by the positioning parts 61-3 and 61-4, thereby positioning the cover body 2 in the width direction and thickness direction of the inner cover assembly 25. The positioning parts 61-3 and 61-4 are formed as follows: the curvature part 61-23 made of resin and provided at the rear part of the recessed part 61, such as Figure 4 As shown in the figure, when the cover body 2 is opened, it is located at the lower part of the cover body 2, so when the inner cover assembly 25 is installed on the outer cover 23, it is easy to insert the insertion part 53 into the space between the positioning parts 61-3 and 61-4. Therefore, the positioning parts 61-3, 61-4 and the curvature part 61-23 are used to form: the support part 60 for locking the insertion part 53 of the inner cover assembly 25.

[0041] Reference Figure 5 , the positioning parts 61-3 and 61-4 are described in detail. The positioning parts 61-3 and 61-4 are respectively constructed to have: a pair of left and right wall-shaped width-direction positioning parts 63 and 64, which extend from the bottom surface of the outer cover 23, that is, the bottom surface of the inner cover accommodating recess 61-1 toward the bottom surface of the cover body 2; a pair of left and right wall-shaped thickness-direction positioning parts 65 and 66, which extend from the end parts of the width-direction positioning parts 63 and 64 on the bottom surface side of the cover body 2 toward the inner side direction of the cover body 2, that is, the direction in which the positioning parts 61-3 and 61-4 are located relative to each other; and a pair of left and right wall-shaped guide parts 67 and 68, which extend from the inner side ends of the thickness-direction positioning parts 65 and 66 toward the bottom surface direction of the cover body 2.

[0042] The interval between the width direction positioning parts 63 and 64 is set to be substantially the same as the width of the insertion part 53. In addition, when the inner cover stopper 61-5 is engaged with the inner cover engagement support part 54 in a state where both ends of the insertion part 53 are respectively in contact with the inner side parts of the thickness direction positioning parts 65 and 66, that is, the outer cover 23 side parts, the thickness direction positioning parts 65 and 66 are set to be such that the bottom surface of the mechanism part 62 is in contact with the back surface of the inner cover 26 in a surface contact manner. In addition, the thickness direction positioning parts 65 and 66 also have a function as a connecting part connecting the width direction positioning parts 63 and 64 and the guide parts 67 and 68. In this embodiment, the interval between the thickness direction positioning parts 65 and 66 is reduced as they approach the pot side, and the interval on the guide part 67 and 68 side is smaller than that on the wall width direction positioning parts 63 and 64 side. Therefore, when the insertion portion 53 is inserted, the insertion portion 53 can be easily inserted into the space between the positioning portions 61-3 and 61-4. In addition, when the lid body 2 is opened after cooking and kept vertically, for example, the condensed water that flows from the inner cover 26 and stays in the space between the positioning portions 61-3 and 61-4 can be easily guided to the center of the curvature portion 61-23. Moreover, the guide portions 67 and 68 are formed so that they do not extend to the bottom surface of the lid body 2 but extend interrupted in the middle, so that when the lid body 2 is closed, the guide portions 67 and 68 do not interfere with the pot 5, especially the flange 28. Therefore, it is preferable to form the guide portions 67 and 68 in such a way that the length from the end of the guide portions 67 and 68 to the bottom surface of the lid body 2 is greater than the height from the upper frame 6 to the upper surface of the flange 28 of the pot 5. With such a configuration, when any one of the end portions 53-2, 53-2 of the insertion portion 53 is not positioned by the positioning portions 61-3, 61-4 and the inner cover assembly 25 is located at a position inclined relative to the outer cover 23, the distal ends of the guide portions 67, 68 will interfere with the inner cover assembly 25, and the angle of the inner cover assembly 25 relative to the outer cover 23 will be further increased, so that the user can easily notice that the position of the inner cover assembly 25 of the cover body 2 is incorrect, resulting in the inner cover assembly 25 being inserted at an angle.

[0043] The curvature portion 61-23 is formed so as to be able to abut against the outer edge portion 53-1 of the insertion portion 53, and the inner cover assembly 25 in the cover body 2 is positioned in the front-rear direction by making the outer edge portion 53-1 abut against the curvature portion 61-23. Therefore, the curvature portion 61-23 has a function as a contact positioning portion that contacts and positions the outer edge portion 53-1 of the insertion portion 53, and also has a function as a positioning portion in the front-rear direction of the inner cover assembly 25.

[0044] The curvature portion 61-23 of the present embodiment is formed with an inclined portion 69, which is formed to be inclined toward the bottom surface side of the lid body 2, so that, for example, when the lid body 2 is opened after cooking and kept vertically, the condensed water that flows from the inner cover 26 and stays in the space between the positioning portions 61-3 and 61-4 is returned to the pot 5 by means of the inclined portion 69. At this time, the curvature portion 61-23 functions as an inclined portion that guides the condensed water that flows into the space between the positioning portions 61-3 and 61-4 toward the center of the curvature portion 61-23, and the positioning portions 61-3 and 61-4 function as guides that guide the condensed water that flows into the space between the positioning portions 61-3 and 61-4 toward the pot 5. When the lid 2 is opened, the central portion of the curvature portion 61-23 is the portion closest to the flange 28 of the pot 5 in the recess 61. Therefore, by returning the condensed water from the center of the curvature portion 61-23 to the pot 5, it is possible to suppress the condensed water from overflowing toward the upper frame 6 when returning. In addition, a groove extending from the bottom surface of the outer cover 23 toward the bottom surface of the lid 2 may be formed in, for example, the central portion of the curvature portion 61-23. The groove functions as a recess for the condensed water to drip. The condensed water that flows from the back surface of the inner cover 26 to the back surface of the insertion portion 53 can be returned to the pot 5 by means of the groove.

[0045] Next, the installation of the inner cover assembly 25 is described. First, when the cover body 2 is opened, the inner cover assembly 25 is lifted by holding the handles 55 and 56, so that the side provided with the inner cover 26 or the cover gasket 27 faces the user side, thereby inserting the insertion portion 53 of the inner cover assembly 25 from above into the space between the positioning portions 61-3 and 61-4. Furthermore, if the outer edge portion 53-1 of the insertion portion 53 is inserted until it abuts against the curvature portion 61-23 of the pot sealing recess 61-2, the width direction positioning portions 63 and 64 are used to define the width direction position of the inner cover assembly 25, and the curvature portion 61-23 is used to define the front-rear direction position of the inner cover assembly 25.

[0046] Furthermore, in this state, until the inner cover engagement support portion 54 of the inner cover assembly 25 engages with the inner cover stop portion 61-5 of the recess 61, the upper portion of the inner cover assembly 25 is moved toward the cover body 2 by holding the handle portions 55 and 56. Then, the end portions 53-2 and 53-2 of the insertion portion 53 abut against the inner side portions of the thickness direction positioning portions 65 and 66, respectively, so that the insertion portion 53 is stopped on the support portion 60, and the bottom surface of the mechanism portion 62 abuts against the back surface of the inner cover 26 in a surface contact manner. When the inner cover engagement support portion 54 engages with the inner cover stop portion 61-5, the position of the inner cover assembly 25 in the thickness direction is fixed, and the inner cover assembly 25 is accommodated in the inner cover accommodation recess 61-1, so that the inner cover assembly 25 is assembled in the recess 61.

[0047] As described above, the rice cooker 100 of this embodiment comprises: a main body 1 for accommodating a pot 5, a cover body 2, and an inner cover assembly 25 detachably mounted on the cover body 2, the cover body 2 having: a support portion 60 for locking the insertion portion 53 of the inner cover assembly 25, the support portion 60 having: width direction positioning portions 63, 64 as a pair of left and right positioning portions, which position the insertion portion 53 in the left and right directions; and guide portions 67, 68 as a pair of left and right limiting portions, which limit the insertion portion 53 from being locked to the support portion 60 when the insertion portion 53 abuts against them, the guide portions 67, 68 being formed as the following structure: they are formed closer to the pot 5 side than the width direction positioning portions 63, 64, and the interval between the left and right guide portions 67, 68 is smaller than the interval between the left and right width direction positioning portions 63, 64.

[0048] With such a configuration, when any one of the end portions 53-2, 53-2 of the insertion portion 53 is not positioned by the positioning portions 61-3, 61-4, resulting in the inner cover assembly 25 being located at an inclined position relative to the outer cover 23, the distal ends of the guide portions 67, 68 interfere with the inner cover assembly 25, thereby limiting the insertion portion 53 from being correctly latched on the support portion 60, and the angle of the inner cover assembly 25 relative to the outer cover 23 will be larger. Therefore, the user can easily notice that the position of the inner cover assembly 25 in the cover body 2 is incorrect, resulting in the inner cover assembly 25 being inserted at an angle.

[0049] In addition, the rice cooker 100 of the present embodiment has the thickness direction positioning parts 65 and 66 as a pair of left and right connecting parts connecting the width direction positioning parts 63 and 64 and the guide parts 67 and 68, and is configured such that the interval between the left and right thickness direction positioning parts 65 and 66 decreases as it approaches the pot 5 side, and is formed such that the guide parts 67 and 68 side are smaller than the width direction positioning parts 63 and 64 side. Therefore, when the insertion part 53 is inserted, the insertion part 53 can be easily inserted into the space between the positioning parts 61-3 and 61-4. In addition, the condensation water that flows from the inner cover 26 and stays in the space between the positioning parts 61-3 and 61-4 can be easily guided to the center of the curvature part 61-23.

[0050] In the rice cooker 100 of the present embodiment, the outer edge 53 - 1 as the distal end of the insertion portion 53 has an arc-shaped structure, so the insertion portion 53 can be easily inserted into the space between the positioning portions 61 - 3 and 61 - 4 .

[0051] In addition, the support portion 60 of the present embodiment has a curvature portion 61-23 as a contact positioning portion that contacts and positions the outer edge portion 53-1, and the curvature portion 61-23 has a circular arc shape with a curvature greater than that of the flange of the pot 5, that is, a circular arc shape along the shape of the pot 5, so as not to interfere with the pot 5 when the lid 2 is in the closed state, and is formed into a structure in which the curvature of the outer edge portion 53-1 and the curvature portion 61-23 are the same. Therefore, after the insertion portion 53 is inserted, the position of the insertion portion 53 is unlikely to be offset, and the so-called placement performance can be improved.

[0052] In addition, the curvature portion 61-23 of this embodiment is formed as a structure having an inclined portion 69 that is inclined in a manner lower than the pot 5 side. Therefore, the inclined portion 69 can be used to return condensation water that flows from the inner cover 26 and accumulates in the space between the positioning portions 61-3 and 61-4 to the pot 5.

[0053] In addition, regarding the rice cooker 100 of this embodiment, a hole or a cutout portion as a concave portion for condensation water to drip can be formed in the insertion portion 53, or a groove as a concave portion for condensation water to drip can be formed in the curved portion 61-23. By configuring in this way, the condensation water flowing from the back side of the inner cover 26 to the back side of the insertion portion 53 can be returned to the pot 5 through the curved portion 61-23 by means of the concave portion.

[0054] In addition, the present invention is not limited to the above-mentioned embodiment, and various changes can be made within the scope of the main purpose of the present invention. In addition, the numerical values ​​shown in the embodiments are only examples after all, and can be appropriately changed according to the specifications of the rice cooker 100, etc.

Claims

1. An electric rice cooker, characterized in that: The electric rice cooker has: A main body, which houses the pot; a cover; and an inner cover assembly which is detachably mounted on the cover body, The cover body has a support portion for locking the insertion portion of the inner cover assembly. The support portion includes: a pair of left and right positioning portions, which position the insertion portion in the left and right directions; and a pair of left and right limiting portions, which limit the insertion portion from being stuck to the support portion when the insertion portion abuts against the positioning portions. The limiting portion is formed closer to the pan than the positioning portion. The interval between the left and right restricting portions is smaller than the interval between the left and right positioning portions.

2. The rice cooker according to claim 1, wherein: The rice cooker comprises: a pair of left and right connecting parts connecting the positioning part and the limiting part, Regarding the interval between the left and right connecting portions, the interval on the restricting portion side is smaller than the interval on the positioning portion side.

3. The rice cooker according to claim 1, wherein: The distal end portion of the insertion portion has an arc shape.

4. The rice cooker according to claim 3, wherein: The support portion includes: a contact positioning portion that contacts and positions the terminal portion; The contact positioning portion has an arc shape along the shape of the pot, The tip portion and the contact positioning portion have the same curvature.

5. The rice cooker according to claim 4, wherein: The contact positioning portion is inclined in such a manner that the pan side is lowered.

6. The electric rice cooker according to claim 4 or 5, wherein: A recessed portion for condensation water to drip is formed in either the insertion portion or the contact positioning portion.

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