Rice cooker

Abstract

To provide a rice cooker which allows a user to easily recognize that a position of an inner lid on a lid body is incorrect.SOLUTION: A rice cooker 100 comprises: a main body 1 storing a pot 5; a lid body 2; and an inner lid assembly 25 detachably fitted to the lid body 2. The lid body 2 has a reception part 60 to which an insertion part 53 of the inner lid assembly 25 is engaged. The reception part 60 has: width-direction positioning parts 63, 64 being a pair of left and right positioning parts for positioning the insertion part 53 in a lateral direction; and guide parts 67, 68 being a pair of left and right regulation parts for regulating engagement of the insertion part 53 to the reception part 60 when the insertion part 53 contacts the guide parts. The guide parts 67, 68 are formed closer to the pot 5 side relative to the width-direction positioning parts 63, 64, and an interval between the left and right guide parts 67, 68 is narrower than an interval between the left and right width-direction positioning parts 63, 64.SELECTED DRAWING: Figure 4

Description

Technical Field

[0001] The present invention relates to a rice cooker equipped with an inner lid.

Background Art

[0002] Conventionally, a rice cooker equipped with an inner lid that covers the opening of a pot for containing rice to be cooked is known. For example, in Patent Document 1, there is disclosed a rice cooker provided with a substantially circular inner lid (4) detachably attached to the bottom surface of a lid (3). The inner lid (4) has an inner lid fixing portion (4a) formed near the front end portion and an inner lid rear end portion (4b) formed at the rear end. When the lid (3) is in an open state, corresponding ends of the inner lid rear end portion (4b) of the inner lid (4) are attached to both sides of a locking means (15) provided on the lid (3), and the inner lid fixing portion (4a) of the inner lid (4) is fixed to a fixing means (12) provided on the lid (3), whereby the inner lid (4) is attached to the lid (3).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In the rice cooker of Patent Document 1, there is a problem that the user may not notice that a displacement has occurred in the position of the inner lid (4) on the lid (3). As one of the factors causing the displacement in the position of the inner lid (4), the fixing portion (4a) is fixed to the fixing means (12) without one end of the inner lid rear end portion (4b) being attached to one side of the locking means (15), and the inner lid (4) is attached to the lid (3) obliquely. In this case, in addition to the risk of steam leaking from between the pot (2) and the inner lid (4), there is a risk that the lid (3) may not close in the rice cooker main body (1), and there is a risk that the inner lid (4) or the lid (3) may be damaged.

[0005] Accordingly, in view of the above circumstances, an object of the present invention is to provide a rice cooker that allows a user to easily notice that the position of the inner lid in the lid body is incorrect.

Means for Solving the Problems

[0006] The rice cooker of the present invention includes a main body that houses a pot, a lid body, and an inner lid assembly that is detachably attached to the lid body. The lid body has a receiving portion that locks an insertion portion of the inner lid assembly. The receiving portion has a pair of left and right positioning portions that position the insertion portion in the left-right direction, and a pair of left and right restricting portions that restrict the insertion portion from being locked to the receiving portion when the insertion portion abuts. The restricting portions are formed closer to the pot side than the positioning portions, and the interval between the left and right restricting portions is narrower than the interval between the left and right positioning portions.

Effects of the Invention

[0007] According to the present invention, when the insertion portion is not correctly positioned by the positioning portion, the inner lid assembly interferes with the wall-like portion, so that the angle of the inner lid assembly with respect to the lid body becomes larger, and the user can easily notice that the position of the inner lid in the lid body is incorrect.

Brief Description of the Drawings

[0008]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Mode for Carrying Out the Invention

[0009] Hereinafter, preferred embodiments of the cooking appliance according to the present invention will be described with reference to the accompanying drawings. In all of these drawings, common parts will be denoted by common reference numerals.

[0010] Figs. 1 to 5 show a rice cooker 100 according to an embodiment of the present invention. Based on these drawings, the overall configuration of the rice cooker 100 in this embodiment will be described. 1 is the main body, which has a substantially rectangular shape with the front and rear surfaces, and the left and right side surfaces facing each other when viewed from above, and the upper part is open. 2 is a lid that opens and closes the upper surface opening of the main body 1. Similar to the main body 1, it has a substantially rectangular shape with the front and rear surfaces, and the left and right side surfaces facing each other when viewed from above, and the upper surface is configured to be substantially flat. The main body 1 has an outer frame 3 that serves as an exterior part, and a pot housing part 4 with an open upper part. When the lid 2 is opened, a bottomed cylindrical pot 5, which is a container for accommodating water and rice as the object to be cooked, is detachably accommodated in the pot housing part 4. The pot housing part 4 is configured by combining an upper frame 6 for suspending the pot 5 and a bowl-shaped resin inner frame 7, etc., and is formed in a bottomed cylindrical shape as a whole.

[0011] The pot 5 has aluminum with good thermal conductivity as the main material 8, and a heating element 9 made of a magnetic metal plate such as ferritic stainless steel is joined from the lower part of the side surface to the bottom surface of the outer surface of the main material 8. Further, on the outer surface of the inner frame 7 facing the bottom surface from the lower part of the side surface of the pot 5, a heating coil 11 is provided as heating means for electromagnetic induction heating of the heating element 9 of the pot 5. When a high-frequency current is supplied to the heating coil 11, the heating element 9 of the pot 5 generates heat due to the alternating magnetic field generated from the heating coil 11, and is configured to heat the object to be cooked in the pot 5 during rice cooking and during heat preservation. Also, at the center of the bottom of the inner frame 7, a pot sensor 12 as pot temperature detection means is disposed so as to elastically contact the bottom surface of the outer surface of the pot 5.

[0012] On the upper surface part of the lid 2, a steam port 14 for discharging steam generated from the object to be cooked in the pot 5 to the outside of the rice cooker 100 is formed. Also, in front of the upper surface part of the lid 2, a lid operation body 15 as lid opening means is disposed in an exposed state.

[0013] On the upper surface of the lid body 2, in addition to the steam port 14 and the lid operation body 15, a display operation unit 17 is provided. The display operation unit 17 mainly includes a display means 18 composed of, for example, an LCD (Liquid Crystal Display) for displaying various pieces of information related to rice cooking, an operation means 19 composed of a push-type switch for starting rice cooking or selecting a rice cooking course, and a control PC (Printed Circuit) board 20 on which a control IC (not shown) for controlling each part of these display means 18, operation means 19, and display operation unit 17 is mounted. Further, above the display operation unit 17, an operation panel 21 for protecting these display means 18, operation means 19, and control PC board 20 is arranged.

[0014] The lid body 2 is configured to include an outer lid 22 that serves as an exterior part, and an outer lid cover 23 that forms the lower part of the outer lid 22. A heat dissipation plate 24 made of metal such as stainless steel or aluminum anodized is provided on the outer lid cover 23. Below the lid body 2, an inner lid assembly 25 is disposed as a lower member of the lid body 2. The inner lid assembly 25 is made of a metal material having a disk shape with substantially the same diameter as the upper opening of the pot 5, and includes an inner lid 26 that covers the upper opening of the pot 5, and a lid packing 27 as an elastic member provided on the entire outer circumference of the inner lid 26 to seal the space between the inner lid 26 and the pot 5. As shown in FIG. 1, when the lid is closed with the lid body 2 closed, the annularly formed lid packing 27 abuts against the flange 28 that is the upper surface of the pot 5 and the inner surface of the upper end of the pot 5, closes the gap between the pot 5 and the inner lid 26, and seals the steam generated from the pot 5. The inner lid 26 made of metal such as stainless steel or aluminum anodized is disposed outside the heat dissipation plate 24.

[0015] Inside the lid body 2, there are provided a lid heater 31 as lid heating means for heating the inner lid 26, a thermistor-type lid temperature sensor 32 for controlling the temperature of the inner lid 26 by this lid heater 31, and a pressure regulating section 33 for adjusting the pressure in the space within the pot 5. And inside the lid body 2, a steam discharge path 34 that connects the steam port 14 and the pressure regulating section 33 is formed as a path for discharging the steam generated in the pot 5 to the outside.

[0016] The pressure regulating section 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 interlocked with a solenoid 36 provided inside the lid body 2. When discharging the steam in the pot 5 to the outside, the steam discharge path 34 is opened, and when pressurizing or depressurizing the inside of the pot 5, the solenoid 36 moves the pressure regulating valve 35 up and down so as to block the steam discharge path 34. During pressurization, the food to be cooked in the pot 5 is heated by high-frequency energization of the heating coil 11, the food to be cooked boils and steam is generated, and when the internal pressure of the pot 5 reaches a predetermined value as this steam fills the pot 5, the spring 37 contracts upward against the elastic force of the spring 37 provided inside the pressure regulating valve 35, the pressure regulating valve 35 moves upward to open the steam discharge path 34, and thus the pressure inside the pot 5 is maintained at atmospheric pressure or higher.

[0017] 38 is a unitized heating substrate assembly disposed inside the main body 1 and including heating control means 39. The heating control means 39 is combined with the display operation unit 17 to electrically control each part of the rice cooker 100. Therefore, it includes a control IC such as a CPU, a memory capable of reading and writing for storing various information and data, a microcomputer (microcontroller) including a timer capable of measuring the time related to cooking rice, etc., and is configured to electrically control each part of the rice cooker 100. Specifically, the heating substrate assembly 38 is connected to the display operation unit 17, and the heating control means 39 receives each temperature detection signal from the pot sensor 12 and the lid temperature sensor 32, and outputs heating control signals to the heating coil 11 and the lid heater 31 respectively, and outputs a drive control signal to the solenoid 36 that moves the pressure regulating valve 35.

[0018] Reference numeral 41 denotes a hinge portion, which has a hinge shaft 42 provided at the lower rear part of the lid body 2 and a hinge spring 43 formed of a coil spring or the like and provided at the upper rear part of the main body 1. When the lid body operating body 14 provided on the front upper surface of the lid body 2 is pushed, the engagement between the main body 1 and the lid body 2 is released, and the lid body 2 is opened about the hinge shaft 42 by the hinge spring 43.

[0019] Further, a hinge cover 44 for covering the connecting portion between the main body 1 and the lid body 2 in the hinge portion 41 is attached behind the hinge portion 41. The hinge cover 44 is configured to be flush with the outer frame 3 and the outer lid 22. Therefore, the outer frame 3, the outer lid 22, and the hinge cover 44 form the outer shape of the rice cooker 100.

[0020] The hinge shaft 42 pivotally supports the main body 1 and the lid body 2 so that they can be opened and closed freely. The hinge spring 43 is locked to the outer lid cover 23 and constantly biases the lid body 2 in the opening direction. A clamp 45 interlocked with the lid body operating body 14 is disposed substantially on the opposite side of the hinge shaft 42, which is the rotation center of the lid body 2. The clamp 45 is pivotally supported by the outer lid cover 23 by a clamp shaft 46. And a clamp receiver 47 (see FIG. 4) for engaging with the clamp 45 is provided on the outer frame 3 substantially on the opposite side of the hinge portion 31.

[0021] The clamp 45 provided on the lid body 2 rotates about the clamp shaft 46 as a central axis and engages with the clamp receiver 47 provided on the main body 1. By the engagement between the clamp 45 and the clamp receiver 47, the main body 1 and the lid body 2 are held in a closed state. On the other hand, when the lid body 2 is to be opened, the lid body operating body 15 is pushed to rotate the clamp 45 in the reverse direction and release the engagement between the clamp 45 and the clamp receiver 47.

[0022] 48 is a pressure reducing means for making the inside of the pot 5 lower than the normal atmospheric pressure when the lid body 2 is closed on the main body 1. The pressure reducing means 48 accommodates the pot 5 in the pot accommodating portion 4, energizes the solenoid 36 after closing the lid body 2 to move the pressure regulating valve 35 downward, and closes the steam discharge path 34 to reduce the internal pressure of the sealed pot 5. Further, when the pressure inside the pot 5 drops below a certain value from the atmospheric pressure, the operation of the pressure reducing pump 49, which is the operation source of the pressure reducing means 48, is stopped, and the inside of the inner pot 1 is kept in a depressurized state. Furthermore, when returning the inside of the pot 5 from the depressurized state to the same pressure as the outside air, the operation of the pressure reducing pump 49 is stopped, and a path (not shown) communicating between the pressure reducing pump 49 and the inside of the pot 5 is opened. That is, the pressure reducing means 48 also serves as a pressure return means for returning the inside of the pot 5 from the depressurized state to the same pressure as the outside air.

[0023] Figure 3 is a perspective view of the inner lid assembly 25 corresponding to the substantial inner lid of the present embodiment. Referring to this figure for explanation, 51 is a hole for steam discharge communicating with the steam discharge path 34. When the pressure regulating valve 35 opens and closes this hole 51, the steam discharge path 34 is opened / closed. Also, 52 is a hole for pressure reduction communicating with the pressure reducing pump 49. Through this hole 52, the pressure reducing pump 49 reduces the internal pressure of the pot 5.

[0024] 53 is an insertion part that can be inserted into the space between the positioning parts 61-3 and 61-4 described later. The insertion part 53 is made of resin and is formed in a substantially spatula shape and substantially plate shape when viewed from above. When the inner lid assembly 25 is attached to the lid body 2, the outer edge part 53-1 that abuts against the curvature part 61-23 described later is formed to have substantially the same curvature as the curvature part 61-23, making it easier to insert the insertion part 53 into the space between the positioning parts 61-3 and 61-4 and less likely to cause displacement after insertion, thus improving what is called "sitting". Here, the width of the insertion part 53 in this embodiment is about 1 / 3 of that of the inner lid 26 and is formed narrower than the conventional one. Therefore, neither of the end parts 53-2, 53-2 of the insertion part 53 is positioned by the positioning parts 61-3, 61-4. When the inner lid assembly 25 is positioned obliquely with respect to the outer lid cover 23, the angle of the inclined inner lid assembly 25 becomes larger than before, so that the user can easily notice that the position of the inner lid assembly 25 in the lid body 2 is incorrect and the inner lid assembly 25 is inserted obliquely. Note that a hole or notch may be formed, for example, in the central part of the outer edge part 53-1 of the insertion part. This hole or notch acts as a recess for draining dew. For example, when the lid body 2 is opened and made vertical after cooking rice, the dew that has flowed down from the back surface of the inner lid 26 to the back surface of the insertion part 53 can be returned to the pot 5 via the curvature part 61-23 through this hole or notch.

[0025] 54 is an inner lid receiving part with which the inner lid locking part 61-5 described later can be engaged. In this embodiment, the inner lid receiving part 54 is made of resin and is formed in a substantially plate shape. By inserting the insertion part 51 into the space between the positioning parts 61-3 and 61-4 and engaging the inner lid locking part 61-5 with the inner lid receiving part 54, the inner lid assembly 25 is configured to be fixed to the outer lid cover 23 of the lid body 2.

[0026] 55 and 56 are resin-made handle parts provided near the left and right sides of the inner lid supporting part 54. When attaching the inner lid assembly 25 to the outer lid cover 23, the user can perform the attachment work without touching the inner lid 26 or the lid packing 27 by holding the handle parts 55 and 56, and can also prevent misidentifying the front and back of the inner lid assembly 25 during attachment. Further, the handle parts 55 and 56 are formed to have outer extending parts 55-1 and 56-1 extending in the outer side direction of the inner lid 26, lower extending parts 55-2 and 56-2 extending from the outer ends of the outer extending parts 55-1 and 56-1 in the direction of the bottom surface of the lid body 2, and leg parts 55-3 and 56-3 extending in the outer side direction of the inner lid 26 from the lower ends of the lower extending parts 55-2 and 56-2. When pushing the inner lid assembly 25 into the outer lid cover 23 after inserting the insertion part 53 into the space between the positioning parts 61-3 and 61-4, it is easier to perform the pushing work by holding the leg parts 55-3 and 56-3.

[0027] FIG. 4 is a perspective view of the rice cooker 100 with the lid body 2 opened, where FIG. 4(A) shows the state in which the inner lid assembly 25 is mounted, and (B) shows the state in which the inner lid assembly 25 is removed. Referring to this figure for explanation, 61 is a recess provided on the bottom surface of the outer lid cover 23. The recess 61 is mainly composed of an inner lid housing recess 61-1 in which the inner lid assembly 25 is housed, a pot sealing recess 61-2 provided on the bottom surface side of the lid body of the inner lid housing recess 61-1, i.e., the front side in FIG. 4, a pair of left and right positioning parts 61-3 and 61-4 capable of holding the insertion part 53, and an inner lid locking part 61-5 capable of locking the inner lid supporting part 54.

[0028] Inside the inner lid housing recess 61-1, a substantially cylindrical space and a space for the insertion part 53 are integrally formed, and a cylindrical mechanism part 62 projects into this space from the bottom surface of the outer lid cover 23. On the bottom surface of this mechanism part 62, a heat dissipation plate 24, a lid temperature sensor 32, a pressure regulating part 33, etc. are arranged, and a steam discharge path 34 is formed near the center of the mechanism part 62. When the inner lid assembly 25 is housed in the inner lid housing recess 61-1 and the inner lid assembly 25 is mounted on the recess 61, the heat dissipation plate 24, the lid temperature sensor 32, and the pressure regulating part 33 come into contact with the inner lid 26, and the opening of the steam discharge path 34 is configured to be blocked.

[0029] In addition to the substantially cylindrical space inside the recess 61-2 for pot sealing, spaces for the handle parts 55 and 56, the space for the clamp 45, and the space for the insertion part 53 are integrally formed. Inside the space within the recess 61-2 for pot sealing, the lid packing 27 abuts against the flange 28 and the inner surface of the upper end of the pot 5, and the inner lid 26 is configured to cover the upper opening of the pot 5. In the present embodiment, the space for the insertion part 53 inside the inner lid housing recess 61-1 and the space for the insertion part 53 inside the recess 61-2 for pot sealing are substantially the same in top view and are integrally formed. When the lid of the lid body 2 is closed, the space inside the recess 61-2 for pot sealing is held in a substantially sealed state, suppressing the heat from the upper part of the pot 5 and the inner lid 26 from being released to the outside of the machine from the space inside the recess 61-2 for pot sealing. The recess 61-2 for pot sealing is formed such that the substantially cylindrical space is concentric with the inner lid housing recess 61-1 and has a curvature larger than that of the flange 28 of the pot 5, and the curvature portions 61-21, 61-22, and 61-23 having this curvature are provided in the recess 61-2 for pot sealing. Therefore, the curvature portions 61-21, 61-22, and 61-23 have an arc shape along the shape of the pot 5. Further, since the recess 61-2 for pot sealing is configured to be wider than the substantially cylindrical space, the pot 5 having the flange 28 does not interfere with the recess 61-2 for pot sealing when the lid of the lid body 2 is closed.

[0030] The inner lid engaging portion 61-5 holds the inner lid assembly 25 in the recess 61 by engaging the inner lid receiving portion 54. The inner lid engaging portion 61-5 is provided at the front portion in the recess 61 and is configured to be located at the upper part of the bottom surface of the lid body 2 when the lid body 2 is opened as shown in FIG. 4. Therefore, when attaching the inner lid assembly 25 to the outer lid cover 23, it is easier to push the inner lid receiving portion 54 into the inner lid engaging portion 61-5 for engagement. Further, in the present embodiment, the inner lid engaging portion 61-5 is configured such that the inner lid receiving portion 54 cannot be engaged when the inner lid receiving portion 54 has an angle of a predetermined value or more with respect to the outer lid cover 23. When the inner lid assembly 25 is positioned obliquely with respect to the outer lid cover 23 and the position of the inner lid assembly 25 in the lid body 2 is incorrect, the inner lid engaging portion 61-5 cannot be engaged with the inner lid receiving portion 54, so that the user can easily notice that the inner lid assembly 25 is inserted obliquely.

[0031] The positioning portions 61-3 and 61-4 insert the insertion portion 53 into the space between the positioning portions 61-3 and 61-4 and hold it there, thereby positioning the inner lid assembly 25 in the width direction and the thickness direction in the lid body 2. The positioning portions 61-3 and 61-4 are made of resin and are provided at the curved portion 61-23 at the rear portion in the recess 61. Since it is configured to be located at the lower part of the lid body 2 when the lid body 2 is opened as shown in FIG. 4, it is easier to insert the insertion portion 53 into the space between the positioning portions 61-3 and 61-4 when attaching the inner lid assembly 25 to the outer lid cover 23. Therefore, the positioning portions 61-3 and 61-4 and the curved portion 61-23 form a receiving portion 60 for locking the insertion portion 53 of the inner lid assembly 25.

[0032] Referring to FIG. 5, the positioning portions 61-3 and 61-4 will be described in detail. The positioning portions 61-3 and 61-4 are a pair of left and right wall-shaped width-direction positioning portions 63 and 64 that extend from the bottom surface of the outer lid cover 23, that is, the bottom surface of the inner lid housing recess 61-1, in the direction of the bottom surface of the lid body 2, and a pair of left and right wall-shaped thickness-direction positioning portions 65 and 66 that extend from the end portions on the bottom surface side of the lid body 2 of the width-direction positioning portions 63 and 64 in the inner direction of the lid body 2, that is, in the direction where the positioning portions 61-3 and 61-4 are located, and a pair of left and right wall-shaped guide portions 67 and 68 that extend from the inner end portions of the thickness-direction positioning portions 65 and 66 in the direction of the bottom surface of the lid body 2, respectively.

[0033] The distance between the width-direction positioning portions 63 and 64 is provided to be substantially the same as the width of the insertion portion 53. Also, when the inner lid locking portion 61-5 is engaged with the inner lid receiving portion 54 in a state where both ends of the insertion portion 53 are respectively in contact with the inner portions of the thickness-direction positioning portions 65 and 66, that is, the outer lid cover 23 side portions, the thickness-direction positioning portions 65 and 66 are provided so that the bottom surface of the mechanism portion 62 comes into surface contact with the back surface of the inner lid 26. Further, the thickness-direction positioning portions 65 and 66 also have a function as a connecting portion that connects the width-direction positioning portions 63 and 64 and the guide portions 67 and 68. In this embodiment, the distance between the thickness-direction positioning portions 65 and 66 is configured to become narrower as going toward the pot side, and the guide portions 67 and 68 side is narrower than the width-direction positioning portions 63 and 64 side. Therefore, when inserting the insertion portion 53, it is possible to easily draw the insertion portion 53 into the space between the positioning portions 61-3 and 61-4. Also, for example, when the lid body 2 is opened and made vertical after cooking rice, the dew that has flowed down from the inner lid 26 and accumulated in the space between the positioning portions 61-3 and 61-4 is easily guided to the center of the curved portion 61-23. And the guide portions 67 and 68 do not extend to the bottom surface of the lid body 2 and are formed to be interrupted in the middle, so that the guide portions 67 and 68 do not interfere with the pot 5, particularly the flange 28, when the lid body 2 is closed. Therefore, it is preferable that the guide portions 67 and 68 are formed so that the length from the tip of the guide portions 67 and 68 to the bottom surface of the lid body 2 is larger than the height from the upper frame 6 to the upper surface of the flange 28 of the pot 5. By configuring in this way, when either of the end portions 53-2 and 53-2 of the insertion portion 53 is not positioned by the positioning portions 61-3 and 61-4 and the inner lid assembly 25 is positioned obliquely with respect to the outer lid cover 23, the tip of the guide portion 67 or 68 interferes with the inner lid assembly 25, and the angle of the inner lid assembly 25 with respect to the outer lid cover 23 becomes larger, and the user can easily notice that the position of the inner lid assembly 25 in the lid body 2 is incorrect and the inner lid assembly 25 is inserted obliquely.

[0034] The curvature portion 61-23 is formed so as to be able to contact the outer edge portion 53-1 of the insertion portion 53, and by bringing the outer edge portion 53-1 into contact with the curvature portion 61-23, the positioning of the inner lid assembly 25 in the front-rear direction in the lid body 2 is performed. Therefore, the curvature portion 61-23 has a function as a butting portion against which the outer edge portion 53-1 of the insertion portion 53 abuts, and also has a function as a positioning portion in the front-rear direction of the inner lid assembly 25.

[0035] The curvature portion 61-23 of the present embodiment is formed with a slope portion 69 formed so as to incline toward the bottom surface side of the lid body 2. For example, when the lid body 2 is opened after cooking rice and made vertical, the dew that has flowed down from the inner lid 26 and accumulated in the space between the positioning portions 61-3 and 61-4 can be returned into the pot 5 through the slope portion 69. At this time, the curvature portion 61-23 functions as a slope portion that guides the dew that has flowed down into the space between the positioning portions 61-3 and 61-4 to the center of the curvature portion 61-23, and the positioning portions 61-3 and 61-4 function as guide portions that guide the dew that has flowed down into the space between the positioning portions 61-3 and 61-4 in the direction of the pot 5. When the lid of the lid body 2 is opened, since the central portion of the curvature portion 61-23 in the recess 61 is the portion closest to the flange 28 of the pot 5, by returning the dew from the center of the curvature portion 61-23 to the pot 5, it is possible to suppress the dew from escaping to the upper frame 6 when returning the dew. In addition, a groove extending from the bottom surface of the outer lid cover 23 toward the bottom surface of the lid body 2 may be formed, for example, in the central portion of the curvature portion 61-23. This groove acts as a recess for draining dew, and the dew that has flowed down from the back surface of the inner lid 26 to the back surface of the insertion portion 53 through this groove can be returned into the pot 5.

[0036] Next, the attachment of the inner lid assembly 25 will be described. First, when the lid body 2 is open, lift the inner lid assembly 25 by holding the handle parts 55 and 56, and insert the insertion part 53 of the inner lid assembly 25 from above into the space between the positioning parts 61-3 and 61-4 with the side where the inner lid 26 and the lid packing 27 are provided facing the user side. Then, insert until the outer edge part 53-1 of the insertion part 53 abuts against the curved part 61-23 of the pot-sealing concave part 61-2. The width-direction position of the inner lid assembly 25 is determined by the width-direction positioning parts 63 and 64, and the front-back direction position of the inner lid assembly 25 is determined by the curved part 61-23.

[0037] And in this state, move the upper part of the inner lid assembly 25 toward the lid body 2 by holding the handle parts 55 and 56 until the inner lid engaging part 54 of the inner lid assembly 25 engages with the inner lid locking part 61-5 of the concave part 61. After that, the end parts 53-2 and 53-2 of the insertion part 53 respectively abut against the inner parts of the thickness-direction positioning parts 65 and 66, the insertion part 53 is locked to the receiving part 60, the bottom surface of the mechanism part 62 is in surface contact with the back surface of the inner lid 26, and when the inner lid engaging part 54 engages with the inner lid locking part 61-5, the thickness-direction position of the inner lid assembly 25 is determined, and the inner lid assembly 25 is accommodated in the inner lid accommodation concave part 61-1 and the inner lid assembly 25 is attached to the concave part 61.

[0038] As described above, the rice cooker 100 of the present embodiment includes a main body 1 that houses the pot 5, a lid body 2, and an inner lid assembly 25 that is detachably attached to the lid body 2. The lid body 2 has a receiving part 60 that locks the insertion part 53 of the inner lid assembly 25. The receiving part 60 has width-direction positioning parts 63 and 64 as a pair of left and right positioning parts that position the insertion part 53 in the left-right direction, and guide parts 67 and 68 as a pair of left and right restricting parts that restrict the insertion part 53 from being locked to the receiving part 60 when the insertion part 53 abuts. The guide parts 67 and 68 are formed on the pot 5 side rather than the width-direction positioning parts 63 and 64, and the interval between the left and right guide parts 67 and 68 is narrower than the interval between the left and right width-direction positioning parts 63 and 64.

[0039] By configuring in this way, when neither of the ends 53-2, 53-2 of the insertion part 53 is positioned by the positioning parts 61-3, 61-4 and the inner lid assembly 25 is positioned obliquely with respect to the outer lid cover 23, the tips of the guide parts 67, 68 interfere with the inner lid assembly 25 and regulate the correct locking of the insertion part 53 to the receiving part 60. Since the angle of the inner lid assembly 25 with respect to the outer lid cover 23 becomes larger, the user can easily notice that the position of the inner lid assembly 25 in the lid body 2 is incorrect and the inner lid assembly 25 is inserted obliquely.

[0040] Also, in the rice cooker 100 of the present embodiment, there are thickness direction positioning parts 65, 66 as a pair of left and right connecting parts that connect the width direction positioning parts 63, 64 and the guide parts 67, 68. The interval between the left and right thickness direction positioning parts 65, 66 is configured to become narrower as it goes toward the pot 5 side, and the guide parts 67, 68 side is narrower than the width direction positioning parts 63, 64 side. Therefore, when inserting the insertion part 53, it is possible to easily draw the insertion part 53 into the space between the positioning parts 61-3, 61-4. Also, it is possible to easily guide the dew that has flowed down from the inner lid 26 and accumulated in the space between the positioning parts 61-3, 61-4 to the center of the curved part 61-23.

[0041] Also, in the rice cooker 100 of the present embodiment, the outer edge part 53-1 as the tip part of the insertion part 53 has an arc shape. Therefore, it is possible to easily insert the insertion part 53 into the space between the positioning parts 61-3, 61-4.

[0042] Also, the receiving part 60 of the present embodiment has a curved part 61-23 as a butting part against which the outer edge part 53-1 abuts. The curved part 61-23 has an arc shape with a larger curvature than the flange of the pot 5 so as not to interfere with the pot 5 when the lid body 2 is in the closed state, that is, an arc shape along the shape of the pot 5, and the curvature of the outer edge part 53-1 and the curved part 61-23 is the same. Therefore, it is possible to make it difficult for the insertion part 53 to shift in position after the insertion of the insertion part 53 and improve the so-called sitting.

[0043] In addition, the curved portion 61-23 of the present embodiment is configured to have a slope portion 69 that slopes so that the side of the pot 5 is lower, and the dew that flows down from the inner lid 26 and accumulates in the space between the positioning portions 61-3 and 61-4 can be returned to the pot 5 through the slope portion 69.

[0044] Also, in the rice cooker 100 of the present embodiment, a hole or notch as a dew-dropping recess may be formed in the insertion portion 53, or a groove as a dew-dropping recess may be formed in the curved portion 61-23. By configuring in this way, the dew that has flowed down from the back surface of the inner lid 26 to the back surface of the insertion portion 53 can be returned to the pot 5 via the curved portion 61-23 through this recess.

[0045] Note that the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit of the present invention. Also, the numerical values and the like exemplified in the embodiment are merely examples, and may be appropriately changed according to the specifications of the rice cooker 100 and the like.

Explanation of Reference Numerals

[0046] 1 Main body 2 Lid body 5 Pot 25 Inner lid assembly 53 Insertion portion 53-1 Outer edge portion (tip portion) 60 Receiving portion 61-23 Curved portion (abutting portion) 63, 64 Width direction positioning portions (positioning portions) 65, 66 Thickness direction positioning portions (connecting portions) 67, 68 Guide portions (restricting portions) 100 Rice cooker

Claims

1. a main body for accommodating a pot, a lid, and an inner lid assembly detachably attached to the lid, and the lid has a receiving portion for locking an insertion portion of the inner lid assembly, the receiving portion has a pair of left and right positioning portions for positioning the insertion portion in the left - right direction, and a pair of left and right restricting portions for restricting the insertion portion from being locked to the receiving portion when the insertion portion abuts, the restricting portions are formed closer to the pot side than the positioning portions, a rice cooker, characterized in that the distance between the left and right restricting portions is narrower than the distance between the left and right positioning portions.

2. having a pair of left and right connecting portions connecting the positioning portions and the restricting portions, the rice cooker according to Claim 1, characterized in that the distance between the left and right connecting portions is narrower on the restricting portion side than on the positioning portion side.

3. the rice cooker according to Claim 1, characterized in that the tip of the insertion portion has an arc shape.

4. the receiving portion has an abutting portion against which the tip abuts, the abutting portion has an arc shape along the shape of the pot, the rice cooker according to Claim 3, characterized in that the curvature of the tip and the abutting portion is the same.

5. the rice cooker according to Claim 4, characterized in that the abutting portion is inclined so that the pot side is lower.

6. the rice cooker according to Claim 4 or 5, characterized in that a recess for draining dew is formed in either the insertion portion or the abutting portion.

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