TW202300076A - Heating cooker capable of simultaneously securing a lid part to a main body part and easily opening and closing the lid part - Google Patents

Abstract

The present invention provides a heating cooker capable of simultaneously securing a lid part to a main body part and easily opening and closing the lid part. The heating cooker for controlling heating of an inner pot is provided with: a main body part which has an accommodating part capable of accommodating the inner pot and is used for controlling heating of the inner pot accommodated in the accommodating part; and a lid part that can be mounted to the main body part. The lid part has an inner lid and a fixing mechanism used for fixing the inner lid to the accommodating part. The fixing mechanism is provided with an operating part movable between a first operation position and a second operation position through operation of a user; and a first fitting member and a second fitting member which are configured so as to fit in an overlapping portion between the accommodating part and the inner lid, move in a direction approaching the accommodating part as the operating part moves toward the first operation position, so as to fit in the overlapping portion, and move in a direction away from the accommodating part as the operating part moves toward the second operation position, so as to release the fitting with the overlapping portion.

Description

heating cooker

The invention relates to a heating cooker.

Patent Document 1 discloses a heating cooker including: a cooker main body having a food storage part (inner pot) for storing food to be cooked; and a lid that opens and closes the food storage part. In this heating cooker, the lid is held in a closed state by a lock mechanism, and when an open button provided on the front upper surface of the lid is pressed, the lock mechanism is disengaged and becomes an open state. prior art literature patent documents

Patent Document 1: Japanese Patent Laid-Open No. 2018-121757

The problem to be solved by the invention

In the heating cooker also known as an electric pressure cooker, it is desired to further increase the internal pressure of the inner pot for accommodating foodstuffs, and it is necessary to firmly fix the lid to the main body of the inner pot for accommodating food. On the other hand, it is desired that the lid portion can be easily opened and closed with respect to the main body portion from the point of view of user convenience.

Therefore, an object of the present invention is to provide a heating cooker capable of achieving both firm fixation of the lid to the main body and easy opening and closing of the lid. solutions to problems

In order to achieve the above object, the heating cooker as a technical solution of the present invention cooks the food in the inner pot by controlling the heating of the inner pot. It is characterized in that the heating cooker has: a main body, which has a a storage part for controlling the heating of the inner pot stored in the storage part; and a cover part that can be mounted on the main body part, and the cover part has an inner cover for making the inside of the storage part a closed space and a fixing mechanism, which is used to fix the aforementioned inner cover to the aforementioned accommodating portion to maintain the aforementioned closed space, and the aforementioned fixing mechanism has: an operating portion, which can be operated between the first operating position and the second operating position by the user move between; and the first fitting member and the second fitting member, which are all configured to be able to fit with the overlapping portion between the aforementioned receiving portion and the aforementioned inner cover, the aforementioned first fitting member and the aforementioned second fitting The engaging member is configured to be disposed at a position opposite to the inner cover across the accommodating portion, and move in a direction closer to the accommodating portion as the operating portion moves to the first operating position, so as to fit into the overlapping portion. , as the operation portion moves to the second operation position, it moves in directions away from the accommodating portion, thereby releasing the engagement with the overlapping portion. The effect of the invention

According to the present invention, for example, it is possible to provide a heating cooker capable of both firm fixing of the lid to the main body and easy opening and closing of the lid.

Detailed ways

Embodiments will be described in detail below with reference to the drawings. In addition, the following embodiments are not intended to limit the scope of the invention, and combinations of features described in the embodiments are not necessarily essential to the invention. Two or more of the plurality of features described in the embodiments may be combined arbitrarily. In addition, the same reference numerals are assigned to the same or similar configurations, and overlapping descriptions are omitted.

A heating cooker 100 according to one embodiment of the present invention will be described. First, the overall configuration of the heating cooker 100 will be described with reference to FIGS. 1 to 4 . 1 to 2 show front perspective views of the whole heating cooker 100 according to this embodiment. FIG. 1 shows a state where the cover 2 is attached to the main body 1 , and FIG. 2 shows a state where the cover 2 is removed from the main body 1 . 3 shows a perspective view of the cover 2 viewed from below, and FIG. 4 shows a sectional view of the heating cooker 100 with the cover 2 attached to the main body 1 (YZ sectional view taken along the line A-A in FIG. 1 ). In each drawing, the X-axis direction is the left-right direction of the heating cooker 100 , the Y-axis direction is the front-back direction of the heating cooker 100 , and the Z-axis direction is the up-down direction of the heating cooker 100 . In the following description, what is described as "the X-axis direction" can be defined as including the +X direction and the -X direction. The same applies to "Y-axis direction" and "Z-axis direction".

The heating cooker 100 of the present embodiment is also called an electric pressure cooker, and is a device that cooks food in the inner pot 3 by controlling the heating of the inner pot 3 in which the food to be cooked is placed. As shown in FIGS. 1 to 2 , the heating cooker 100 is provided with: a main body 1, which controls the heating of the inner pot 3 according to a predetermined heating program; The upper part of the main body part 1. As shown in FIG. 2 , heating cooker 100 according to this embodiment is configured such that lid 2 can be completely detached from body 1 , that is, body 1 and lid 2 can be separated from each other.

Next, the configuration of the main body portion 1 will be described with reference to FIGS. 1 to 2 and 4 . The main body 1 can include: a housing part 10 capable of housing the inner pot 3 ; a heating part (heater) 11 which heats the inner pot 3 housed in the housing part 10 ; and a control part 12 . As shown in FIGS. 2 and 4 , the accommodating portion 10 has a bottomed cylindrical shape with an open upper side, and is configured so that the inner pot 3 can be freely inserted and withdrawn from the upper open portion in a state where the lid portion 2 is removed from the main body portion 1 . The housing part 10 is also called an outer pot, and can be formed of metal etc., for example. A flange 10 a is provided on a peripheral portion of the housing portion 10 . In addition, as shown in FIG. 4 , the heating unit 11 includes, for example, an induction heating coil disposed around the housing unit 10 (lower in FIG. 4 ) to inductively heat the inner pot 3 housed in the housing unit 10 . The control unit 12 has a processor such as a CPU and a memory, and controls the heating process of the inner pot 3 by controlling the power supply to the heating unit 11 (induction heating coil) according to a predetermined heating program for cooking the food in the inner pot 3 (cooking of ingredients). In FIG. 4 , the control unit 12 is arranged at the front of the main body 1 , but it can be arranged at any position inside the main body 1 .

In addition, as shown in FIGS. 1 to 2 , a man-machine interaction interface portion 13 is provided on the outer surface of the main body portion 1 . The human-computer interaction interface part 13 can include: for example, an input part such as a button or a knob, which accepts an input for setting and adjusting the content of the heat treatment of the inner pot 3 (that is, the cooking content of the ingredients put into the inner pot 3) from the user. and/or a display unit (display, etc.) that displays the setting and status of heat treatment (cooking content).

Next, the structure of the cover part 2 is demonstrated, referring FIGS. 1-4. The cover part 2 is installed on the upper part of the main body part 1 and opens and closes relative to the receiving part 10 of the main body part 1 . The cover part 2 can also be understood as being installed, arranged, or arranged on the upper part of the main body part 1 . In the case of the present embodiment, the lid unit 2 includes an inner lid 14 , a handle unit 15 , and an exhaust mechanism 20 .

The inner lid 14 is a lid for opening and closing the accommodating portion 10 (inner pot 3 ), and can be confirmed by observing the lid portion 2 removed from the main body portion 1 from below as shown in FIG. 3 . The inner cover 14 is constituted so that, when the cover part 2 is mounted on the upper part of the main body part 1, as shown in FIG. It becomes a closed space, and the inner cover 14 can be fixed to the accommodating part 10 by the fixing mechanism 30 discussed later. In addition, the handle portion 15 is a portion for the user to hold for the opening and closing operation of the lid portion 2, and as shown in FIGS. of the upper surface.

The exhaust mechanism 20 is a mechanism for exhausting the gas (steam) inside the inner pot 3 to the outside (outside) from the exhaust hole 21 provided on the upper surface of the lid 2 . As shown in Figure 4, the exhaust mechanism 20 includes a communication pipe 22 communicated with the inside of the inner pot 3 and an exhaust valve 23 for opening and closing the flow path of the communication pipe 22. The drive unit (actuator) shown in the figure drives the exhaust valve 23 to open and close the flow path of the communication pipe 22 . For example, the exhaust mechanism 20 drives the exhaust valve 23 under the control of the control unit 12 at a predetermined time such as when the cooking of the ingredients in the inner pot 3 (heating treatment of the inner pot 3 ) is completed, so that the connection pipe 22 The flow path is opened, and the gas inside the inner pot 3 is exhausted from the exhaust hole 21 on the upper surface of the cover 2 to the outside of the machine as indicated by the dotted arrow in FIG. 4 (that is, automatic exhaust). Accordingly, the internal pressure of the inner pot 3 can be lowered to be close to the atmospheric pressure (outside pressure), so the lid 2 can be safely detached from the main body 1 . Here, as shown in FIGS. 1 to 2 , the exhaust mechanism 20 may also be configured to have an exhaust button 16 provided on the upper surface of the cover portion 2, and the exhaust mechanism 20 may be mechanically activated by pressing the exhaust button 16 by the user. Open exhaust valve 23, gas is exhausted (forced exhaust) from the inside of inner pot 3 to the outside of the machine.

In addition, the lid part 2 further includes a fixing mechanism 30 , a locking mechanism 40 , and a pressure notification mechanism 50 as shown in FIG. 1 . The fixing mechanism 30 is a mechanism for fixing the main body 1 and the cover 2 attached to the upper portion of the main body 1 . The fixing mechanism 30 can also be understood as a mechanism for fixing the inner cover 14 of the cover part 2 relative to the housing part 10 so that the inside of the housing part 10 of the main body part 1 is maintained as a closed space. In FIGS. 1 to 2 , the operation as the first operating part (first operating member) operated by the user when the main body 1 and the cover 2 are fixed and/or when the fixing is released is illustrated. Rod 31. The joystick 31 is configured such that the fixed position P F1 (first operating position) arranged when the main body 1 and the cover 2 are fixed due to the user's operation, and the fixed position P _F1 (first operating position) when the main body 1 and the cover 2 are released are fixed. It is movable (slidable) among the arrange|positioned release positions P _F2 (2nd operation position). A detailed structural example of the fixing mechanism 30 will be discussed later.

The locking mechanism 40 is a mechanism for locking the fixing between the main body 1 and the cover 2 by the fixing mechanism 30 . The lock mechanism 40 can also be understood as a first restriction mechanism that restricts movement of the joystick 31 of the fixing mechanism 30 from the fixing position _PF1 to the release position _PF2 by the user's operation. In FIGS. 1 to 2 , a switch 41 (handle (knob)) is shown as a second operation part (second operation member) operated by the user when the restriction on the movement of the joystick 31 to the release position _PF2 is released. ). The switch 41 is normally arranged at the position _PL1 , but is configured to be slidable to the position _PL2 by the user's operation when the restriction on the movement of the joystick 31 to the release position _PF2 is released. Detailed configuration examples of the lock mechanism 40 and the first restriction mechanism using the lock mechanism 40 will be described later.

The pressure notification mechanism 50 is a mechanism that has a pin member 51 (pressure pin) that can move in the Z-axis direction according to the internal pressure of the inner pot 3, and is used to notify the user based on the position of the pin member 51 in the Z-axis direction. Whether or not the internal pressure of the inner pot 3 is more than a predetermined value (threshold value) (that is, whether or not the internal pressure of the inner pot 3 is in a high state). In the case of this embodiment, as shown in FIGS. 1 to 2 , the upper end of the pin member 51 is arranged so that it can protrude from the upper surface of the lid 2 , and the user can be notified of the inside of the inner pot 3 by the amount of protrusion. Whether the pressure is above the predetermined value.

Here, the detailed structure and operation of the pressure notification mechanism 50 will be described with reference to FIGS. 5A to 5B . 5A to 5B show cross-sectional views of the pin member 51 of the pressure notification mechanism 50 and its surroundings (YZ cross-sectional view taken along line B-B in FIG. 1 ). FIG. 5A shows a state where the internal pressure of the inner pot 3 is lower than a predetermined value, and FIG. 5B shows a state where the internal pressure of the inner pot 3 is greater than a predetermined value.

The pressure notification mechanism 50 has a pin member 51 extending in the Z-axis direction and a communication pipe 52 provided on the inner cover 14 so as to communicate the inside and the outside of the inner pot 3 . The pin member 51 is configured to pass through the flow path of the communication pipe 52 so as to close the flow path, and is configured to be slidable in the Z-axis direction. In addition, the communication pipe 52 can also be understood as a member defining the opening (communication hole) of the inner cover 14 and/or as a support member that slidably supports the pin member 51 .

With regard to the pressure notification mechanism 50, when the internal pressure of the inner pot 3 is lower than a predetermined value, as shown in _FIG . _N1 ). On the other hand, when the internal pressure of the inner pot 3 is more than a predetermined value, the pin member 51 is pushed in the +Z direction due to the internal pressure of the inner pot 3, and as shown in FIG. The second pin position P _N2 on the side of _N1 in the +Z direction (hereinafter, may be referred to as high pressure position P _N2 ). At this time, the amount of protrusion of the pin member 51 at the high-pressure position _PN2 relative to the upper surface of the lid portion 2 is larger than the amount of protrusion at the low-pressure position _PN1 , so the user can confirm the position of the inner pot 3 based on the amount of protrusion. The case where the internal pressure is higher than a predetermined value. In addition, the predetermined value for judging whether the internal pressure of the inner pot 3 is in a high state is prescribed|regulated by the mass (weight) of the pin member 51, and can be set arbitrarily.

In addition, the pressure notification mechanism 50 of this embodiment can be used as a part of the second restriction mechanism that restricts the movement of the joystick 31 of the fixing mechanism 30 from the fixing position _PF1 to the release position _PF2 by the user's operation. A detailed configuration example of the second restriction mechanism using the pressure notification mechanism 50 will be described later.

[Fixing Mechanism] Next, the configuration and operation of the fixing mechanism 30 of the cover 2 will be described with reference to FIGS. 6A to 6B and FIGS. 7A to 7B . 6A to 6B show a state in which the joystick 31 is arranged at the fixed position _PF1 and the main body 1 and the cover 2 are fixed by the fixing mechanism 30 . 6A shows a view of the fixing mechanism 30 of the cover 2 viewed from above (+Z direction), and FIG. 6B shows a perspective view of the fixing mechanism 30 of the cover 2 . 7A to 7B show a state in which the joystick 31 is disposed at the release position _PF2 and the fixation between the main body 1 and the cover 2 by the fixing mechanism 30 is released. 7A shows a view of the fixing mechanism 30 of the cover 2 viewed from above (+Z direction), and FIG. 7B shows a perspective view of the fixing mechanism 30 of the cover 2 . In addition, in FIGS. 6A to 6B and FIGS. 7A to 7B , in order to make the structure of the fixing mechanism 30 of the cover 2 easier to understand, the structure of the outer cover of the cover 2 and the structure of the fixing mechanism 30 are omitted. A diagram illustrating components that are not related.

As shown in, for example, FIGS. 6A to 6B , the fixing mechanism 30 can include a joystick 31 , a first fitting member 32 (first fixing member), and a second fitting member 33 (second fixing member). The joystick 31 is configured to be movable between the fixed position _PF1 and the released position _PF2 by a user's operation. As mentioned above, the fixed position _PF1 is the position where the operation lever 31 is arranged when the main body 1 and the cover 2 are fixed, and the release position _PF2 is the position where the operation lever 31 releases the fixing between the main body 1 and the cover 2 . Occasionally configured location. In addition, both the first fitting member 32 and the second fitting member 33 are capable of fitting in the overlapped portion between the flange 10a of the housing part 10 and the inner cover 14 in the state where the cover part 2 is attached to the main body part 1. components formed in a manner. In addition, the first fitting member 32 and the second fitting member 33 can be disposed at positions facing each other across the housing portion 10 and the inner cover 14 of the main body 1 (in this embodiment, on the −Y direction side of the housing portion 10 ). and +Y side).

As shown, for example, in FIG. 6A , the first fitting member 32 is used to pass through the overlapping portion (the first overlapping portion R1 ) between the flange 10a (a part on the −Y direction side) of the housing portion 10 and the inner cover 14 . A member that fits and fixes the main body portion 1 and the cover portion 2 . The first fitting member 32 is arranged on the −Y direction side of the housing portion 10 , and is configured to be movable in the Y axis direction as the joystick 31 moves in the Y axis direction. In the case of the present embodiment, the first fitting member 32 has a U-shaped cross-sectional shape (refer to FIG. 4 ) so as to fit with the first overlapping portion R1 , and when viewed from the +Z direction side (upper side). In the case of , it has a curved shape (arc shape) curved along the flange 10 a (part of the −Y direction side) of the housing portion 10 .

In addition, as shown in, for example, FIGS. 6A to 6B , the first fitting member 32 is connected to the joystick 31 via the first arm member 34 a and the first connecting member 35 a. The first arm member 34 a is a plate-shaped member extending in the Y-axis direction between the end portion on the −Y direction side and the center portion of the inner cover 14 , and can be arranged above the inner cover 14 . The -Y direction side end part of the 1st arm member 34a is connected to the 1st fitting member 32, and the +Y direction side end part of the 1st arm member 34a is connected to the 1st connection member 35a. The first arm member 34a can be formed of, for example, metal. The first connecting member 35a is a member extending in the Y-axis direction so as to connect the +Y-direction side end of the first arm member 34a and the joystick 31, and can be arranged above the first arm member 34a. The first connection member 35a can be formed of, for example, plastic, resin, or the like. According to such a configuration, the first fitting member 32 can be moved in the Y-axis direction as the joystick 31 moves in the Y-axis direction. In addition, the 1st fitting member 32 can also be understood as including the 1st arm member 34a, or can also be understood as including the 1st arm member 34a and the 1st connection member 35a.

As shown, for example, in FIG. 6A, the second fitting member 33 is used to pass through the overlapping portion (the second overlapping portion R2) between the flange 10a (a part of the side in the +Y direction) of the housing portion 10 and the inner cover 14. A member that fits and fixes the main body portion 1 and the cover portion 2 . The second fitting member 33 is disposed on the +Y direction side of the housing portion 10 and is configured to be movable in the Y axis direction as the joystick 31 moves in the Y axis direction. In the case of the present embodiment, the second fitting member 33 has a U-shaped cross-sectional shape (refer to FIG. 4 ) so as to be fittable with the second overlapping portion R2 , and when viewed from the +Z direction side (upper side). In the case of , it has a curved shape (arc shape) that curves along the flange 10a (a part of the +Y direction side) of the housing portion 10 .

In addition, as shown in FIGS. 6A to 6B , for example, the second fitting member 33 is connected to the joystick 31 (first connecting member 35 a ) via the second arm member 34 b, the second connecting member 35 b and the link mechanism 36 . The second arm member 34 b is a plate-shaped member extending in the Y-axis direction between the end portion on the +Y direction side and the center portion of the inner cover 14 , and can be arranged above the inner cover 14 . The +Y direction side end part of the 2nd arm member 34b is connected to the 2nd fitting member 33, and the -Y direction side end part of the 2nd arm member 34b is connected to the 2nd connection member 35b. The second arm member 34b can be formed of, for example, metal. The second connecting member 35b is a member for connecting the end portion of the second arm member 34b on the −Y direction side and the joystick 31 (first connecting member 35a) via a link mechanism 36, and can be arranged on the side of the second arm member 34b. above. The second connection member 35b can be formed of, for example, plastic, resin, or the like. According to such a configuration, the second fitting member 33 can be moved in the Y-axis direction as the joystick 31 moves in the Y-axis direction. In addition, the 2nd fitting member 33 can also be understood as including the 2nd arm member 34b, or can also be understood as including the 2nd arm member 34b and the 2nd connection member 35b.

The link mechanism 36 is configured to move the second fitting member 33 in a direction opposite to the moving direction of the first fitting member 32 in accordance with the movement of the joystick 31 . As shown in, for example, FIGS. 6A to 6B , the link mechanism 36 of the present embodiment is a pantograph type link mechanism composed of a first link member 36 a and a second link member 36 b. The 1st link member 36a and the 2nd link member 36b are connected with the common shaft member 36c, and mutually intersect based on the connection part (part which the shaft member 36c penetrates) connected with the shaft member 36c. And the 1st link member 36a is connected to the 1st connection member 35a (1st fitting member 32) at one end part, and is connected to the 2nd connection member 35b (2nd fitting member 33) at the other end part. In addition, the second link member 36b is also connected to the first connecting member 35a (first fitting member 32) at one end and connected to the second connecting member 35b (second fitting member 33) at the other end. link. According to this configuration, the first fitting member 32 and the second fitting member 33 can be moved in the Y-axis direction symmetrically with respect to a line passing through the center of the shaft member 36c and parallel to the X-axis direction. That is, when the joystick 31 and the first fitting member 32 are moved in the +Y direction as shown in FIGS. 6A to 6B , the second fitting member 33 can be moved in the −Y direction. On the other hand, when the joystick 31 and the first fitting member 32 are moved in the −Y direction as shown in FIGS. 7A to 7B , the second fitting member 33 can be moved in the +Y direction. In addition, the link mechanism 36 can also be understood as including the 1st connection member 35a and the 2nd connection member 35b.

With regard to the fixing mechanism 30 thus constituted, when the operating lever 31 is moved from the release position _PF2 to the fixing position _PF1 due to the user's operation, the first fitting member 32 and the first fitting member 32 and the first fitting member 32 are connected to each other along with the movement of the operating lever 31. The second fitting members 33 each move in a direction approaching the accommodating portion 10 . That is, as shown in FIGS. 6A to 6B, the first fitting member 32 moves in the +Y direction to fit in the first overlapping portion R1, and the second fitting member 33 moves in the -Y direction to overlap with the second overlapping portion R1. Partial R2 mosaicism. Thereby, the accommodating part 10 and the inner cover 14 can be fixed, and the main body part 1 and the cover part 2 can be fixed. On the other hand, when the joystick 31 is moved from the fixed position _PF1 to the release position _PF2 due to the user's operation, the first fitting member 32 and the second fitting member 32 are engaged with the second fitting along with the movement of the joystick 31 . The members 33 move in directions away from the accommodating portion 10 respectively. That is, as shown in FIGS. 7A to 7B , the first fitting member 32 moves in the -Y direction to release the fitting of the first fitting member 32 and the first overlapping portion R1, and the second fitting member 33 moves toward the + The fitting of the second fitting member 33 and the second overlapping portion R2 is released by moving in the Y direction. Thereby, the fixation between the accommodating part 10 and the inner cover 14 can be released, and the fixation between the main body part 1 and the cover part 2 can be released.

As described above, in the fixing mechanism 30 of the present embodiment, the first fitting member 32 and the second fitting member 32 respectively constituted so as to fit in the overlapped portion between the flange 10a of the housing portion 10 and the inner cover 14 The member 33 is disposed at a position facing the inner cover 14 across the housing portion 10 . Thereby, the accommodating part 10 and the inner cover 14 can be firmly fixed. That is, the main body 1 and the cover 2 can be firmly fixed. In addition, in the fixing mechanism 30 of the present embodiment, by using the link mechanism 36 , both the first fitting member 32 and the second fitting member 33 can be moved simultaneously only by the user operating the joystick 31 . Therefore, the opening and closing operation of the cover part 2 with respect to the main body part 1 can be performed easily, and user's convenience can be improved. That is, according to the structure of the heating cooker 100 of this embodiment, both the firm fixation of the lid part 2 with respect to the main body part 1, and the easy opening and closing of the lid part 2 with respect to the main body part 1 can be compatible.

[First Restricting Mechanism] Next, referring to FIGS. 8A to 8C , the first restricting mechanism for restricting the movement of the joystick 31 of the fixing mechanism 30 from the fixed position _PF1 to the release position _PF2 due to the operation of the user is performed. illustrate. As described above, the first restricting mechanism can be constituted by the locking mechanism 40 of the cover 2 , and therefore, the structure of the locking mechanism 40 will be described here. 8A to 8C are diagrams showing a configuration example of the locking mechanism 40 of the cover 2 , and FIG. 8A is a partially enlarged view of the locking mechanism 40 . 8A to 8C, in order to make the structure of the locking mechanism 40 easy to understand, only the locking mechanism 40 and the members associated with the locking mechanism 40 (the first connecting member 35a and the second connecting member 35b of the fixing mechanism 30) are shown. , link mechanism 36, etc.), illustration of components not related to the description of the structure of the lock mechanism 40 is omitted. In addition, in FIGS. 8A to 8C , illustration of the joystick 31 of the fixing mechanism 30 and the switch 41 of the lock mechanism 40 is omitted in order to facilitate understanding of the drawings. In each figure, the joystick 31 is attached to the part A of the 1st coupling member 35a, and the switch 41 is attached to the part B of the release member 43 mentioned later.

Here, in FIGS. 8A to 8C , a case 45 that accommodates the locking mechanism 40 and components associated with the locking mechanism 40 is illustrated. The housing 45 can be configured as a guide member that guides the movement of the locking member 42 and the release member 43 of the locking mechanism 40 discussed later, and/or guides the first connecting member 35a and the second connecting member 35a of the fixing mechanism 30 . A guiding member for the movement of member 35b. In addition, the housing 45 can also be understood as a part of the locking mechanism 40 .

First, the configuration of the lock mechanism 40 will be described with reference to FIG. 8A . The lock mechanism 40 can include, for example, a switch 41 , a lock member 42 , and a release member 43 .

As described above, the switch 41 is activated by the user when the lock mechanism 40 (lock member 42) locks the joystick 31, that is, when the movement of the joystick 31 from the fixed position P _F1 to the release position P _F2 is released. operating parts. The switch 41 is not shown in FIG. 8A , but it is attached to the position B of the release member 43 biased in the -Y direction, and is configured to be disposed at the position P L1 in normal times (in the unlocked state), and to be disposed at the position P _L1 in the release state. The joystick 31 can slide to the position _PL2 in the +Y direction by the user's operation when the restriction of the movement to the position _PF2 is released. Along with the movement of the switch 41 to the position _PL2 by the user's operation, the release member 43 to which the switch 41 is attached can also move in the +Y direction.

The lock member 42 is a member for locking the joystick 31 in a state where the joystick 31 is located at the fixed position _PF1 by engaging with the first engaged portion 37 provided on the first connecting member 35 a of the fixing mechanism 30 . The locking member 42 is configured to be movable in a second axial direction (in this embodiment, the X-axis direction) which is the same as the first axial direction (in this embodiment, the X-axis direction) in which the switch 41 and the release member 43 are movable. In the embodiment, the Y-axis direction) intersects, and the lock member 42 is biased in the +X direction (that is, the direction toward the first connecting member 35 a ) by a biasing member (not shown) such as a spring member. Moreover, the end part of the lock member 42 by the -X direction side has the protrusion part 42a which protrudes toward +Z direction. The protruding portion 42a has an inclined surface 42b on which a pawl portion 43a (inclined surface 43b) of the release member 43 to be discussed later abuts, and can serve as a function for converting the movement of the release member 43 in the +Y direction to the movement of the lock member 42 in the −X direction. The moving part of the conversion mechanism functions.

The release member 43 is a member for releasing the state in which the joystick 31 is locked at the fixed position _PF1 by the lock member 42, that is, the state in which the lock member 42 is engaged with the first engaged portion 37 of the first connecting member 35a. It is configured so that it can move in the Y-axis direction. The release member 43 is biased in the −Y direction by a biasing member (not shown) such as a spring member, and can move in the +Y direction as the switch 41 moves in the +Y direction by the user's operation. Moreover, the release member 43 has the claw part 43a which protrudes in -X direction. The claw portion 43 a can function as a part of a conversion mechanism for converting the movement of the release member 43 in the +Y direction to the movement of the lock member 42 in the −X direction. Specifically, the claw portion 43a has an inclined surface 43b that contacts the inclined surface 42b of the protrusion 42a provided on the lock member 42, and when the switch 41 slides in the +Y direction (that is, the release member 43 moves in the +Y direction), ) and the inclined surface 42b of the protrusion 42a is pressed by the inclined surface 43b. Thereby, the lock member 42 can be moved (pushed) in the −X direction, and the engagement between the lock member 42 and the first engaged portion 37 can be released (that is, the lock member 42 locks the joystick 31 ). Furthermore, the claw part 43a has a step|step-difference 43c on the -Y direction side, and is comprised so that the protrusion part 42a may be hooked when the inclined surface 43b is released from the inclined surface 42b of the protrusion part 42a. Accordingly, it is possible to hold (maintain) the unlocked state in which the engagement between the lock member 42 and the first engaged portion 37 is released.

Next, the operation of the lock mechanism 40 will be described with reference to FIGS. 8A to 8C . Here, the operation of the lock mechanism 40 at the time of releasing the lock of the joystick 31 at the fixed position _PF1 will be described.

8A shows a state where the lock member 42 is engaged with the first engaged portion 37 of the first connecting member 35a, that is, a state where the lever 31 of the fixing mechanism 30 is locked at the fixed position _PF1 . In this state, the release member 43 is biased in the −Y direction, and the lock member 42 is biased in the +X direction to engage with the first engaged portion 37 .

Here, as shown in FIG. 8A , the first engaged portion 37 is a portion for engaging the locking member 42 in a state where the operating lever 31 of the fixing mechanism 30 is disposed at the fixed position P _F1 , and can be configured to be connected from the first connection. The surface on the −X direction side of the member 35 a is a concave portion (groove portion) cut in the +X direction. The lock member 42 contacts the surface 37a on the +Y direction side of the first engaged portion 37 in a state of being engaged with the first engaged portion 37, and can lock the joystick 31 at the fixed position _PF1 . The 1st engaged part 37 can be comprised so that the cutting amount to the +X direction may be larger than the 2nd engaged part 38 mentioned later.

When the switch 41 is slid in the +Y direction by the user's operation, as shown in FIG. 8B , the releasing member 43 also moves in the +Y direction along with the sliding of the switch 41 . At this time, the protrusion 42a (inclined surface 42b) of the locking member 42 is pushed by the claw portion 43a (inclined surface 43b) of the releasing member 43, so that the locking member 42 moves in the −X direction, and the locking member 42 and the first locked The engagement of the joint portion 37 is released. Then, when the release member 43 is further moved in the +Y direction to disengage the claw portion 43 a (inclined surface 43 b ) of the release member 43 , the step 43 c of the claw portion 43 a is hooked to the protrusion 42 a of the lock member 42 . Accordingly, while maintaining the unlocked state in which the lock member 42 is released from the engagement with the first engaged portion 37 , the lever 31 of the fixing mechanism 30 can be moved to the release position _PF2 .

If the operating lever 31 of the fixing mechanism 30 is moved to the release position P _F2 due to the user's operation in the unlocked state, as shown in FIG. The slope part 39 of 35a moves to -X direction, and is engaged with the 2nd to-be-engaged part 38 of the 1st connection member 35a (arranged in the 2nd to-be-engaged part 38). At this time, the hooking between the claw portion 43a of the release member 43 and the protrusion portion 42a of the lock member 42 is released, and the switch 41 returns to the position P _L1 .

Here, as shown in FIG. 8C , the second engaged portion 38 is a portion to which the locking member 42 is engaged when the operating lever 31 of the fixing mechanism 30 is disposed at the release position P _F2 , and can be configured to be connected from the first connection. The surface on the −X direction side of the member 35 a is a concave portion (groove portion) cut in the +X direction. The lock member 42 abuts against the surface 38a on the +Y direction side of the second engaged portion 38 in a state of being engaged with the second engaged portion 38, thereby restricting the operation lever 31 from the release position P _F2 to the −Y direction. Move further in the Y direction. In addition, the slope portion 39 is provided between the first engaged portion 37 and the second engaged portion 38 . The slope portion 39 can be configured so that the locking member 42 moves in the -X direction due to the movement of the joystick 31 to the release position _PF2 (that is, the movement of the first connecting member 35a in the -Y direction), so that the locking member 42 and the locking member 42 are connected to each other. The second engaged portion 38 is engaged (arranged in the second engaged portion 38 ).

The heating cooker 100 of the present embodiment is provided with the above-mentioned lock mechanism 40 , and the lock of the lock mechanism 40 must be released before the fixing mechanism 30 is operated. By adopting such a two-stage releasing mechanism, even if the user touches the fixing mechanism 30 by mistake, the fixing between the main body 1 and the cover 2 will be smooth as long as the locked state of the locking mechanism 40 is not released first. will not be lifted. This structure is particularly effective when the internal pressure of the inner pot 3 is high. Generally speaking, under the high internal pressure state, the lock may be easily disengaged, but as long as both the locking mechanism 40 and the fixing mechanism 30 are When it is released at the same time, the lid 2 will not be opened, so the safety of the heating cooker 100 can be improved.

[Second Restricting Mechanism] A second restricting mechanism for restricting movement of the joystick 31 of the fixing mechanism 30 from the fixed position _PF1 to the release position _PF2 by the user's operation will be described with reference to FIGS. 9A to 9B . As mentioned above, the second restriction mechanism can be configured using the pressure notification mechanism 50 . 9A to 9B are diagrams for explaining the configuration of the second restriction mechanism of the cover 2 . In these figures, in order to make the structure of the second restricting mechanism of the cover 2 easier to understand, the illustration of parts not related to the description of the structure of the second restricting mechanism, such as the exterior cover of the cover 2, is omitted. FIG. 9A shows a state where the joystick 31 of the fixing mechanism 30 is arranged at the fixing position _PF1 . In FIG. 9A , the internal pressure of the inner pot 3 is equal to or higher than a predetermined value, and the pin member 51 of the pressure notification mechanism 50 is arranged at the high pressure position P _N2 . In addition, FIG. 9B shows the state where the joystick 31 is arrange|positioned at the release position _PF2 . In FIG. 9B , the internal pressure of the inner pot 3 is lower than a predetermined value, and the pin member 51 of the pressure notification mechanism 50 is arranged at the low pressure position P _N1 .

First, the configuration of the second restriction mechanism will be described with reference to FIG. 9A . The second restriction mechanism includes the pin member 51 and the plate member 60 of the pressure notification mechanism 50, and is configured to restrict the movement of the fixing mechanism 30 due to the user's operation in the state where the pin member 51 of the pressure notification mechanism 50 is arranged at the high pressure position _PN2 . The situation where the joystick 31 moves to the release position _PF2 . As mentioned above, the pin member 51 of the pressure notification mechanism 50 is disposed at the low pressure position P _N1 (see FIG. 9B ) when the internal pressure of the inner pot 3 is lower than a predetermined value, and the internal pressure of the inner pot 3 is above a predetermined value. In this case, it is disposed at the high pressure position P _N2 on the +Z direction side of the low pressure position P _N1 (see FIG. 9A ). In addition, the pin member 51 can include: a first portion 51a positioned at the height of the plate member 60 when the pin member 51 is disposed at the low pressure position P _N1 ; and a second portion 51b that is disposed at the high pressure position P of the pin member 51. It is located at the height of the plate member 60 in the state of _N2 , and has a diameter larger than the diameter of the first portion 51a.

The plate member 60 is a plate-shaped member connected to the joystick 31 of the fixed member 30 and configured to move as the joystick 31 moves, and can be formed of, for example, metal. In the case of the present embodiment, the plate member 60 is attached (fixed) to the second arm member 34b, but it is not limited thereto, and may be attached to other members constituting the fixing mechanism 30 (for example, the joystick 31, the first arm member 34b). joint member 32, second fitting member 33, first arm member 34a, first joint member 35a, second joint member 35b, etc.).

In addition, the plate member 60 has an opening 61 through which the pin member 51 penetrates. The opening 61 has a first region 61a where the pin member 51 is located when the operating lever 31 of the fixing mechanism 30 is at the fixed position _PF1 , and a first region 61a where the pin member 51 is located when the operating lever 31 is at the release position _PF2 . The second area 61b. The first region 61a of the opening 61 has a larger diameter than the second portion 51b so that not only the first portion 51a of the pin member 51 but also the second portion 51b can be located (penetrated) in the first region 61a. On the other hand, the second region 61b of the opening 61 is a hole (groove) formed on the -Y direction side of the first region 61a so as to be continuous with the first region 61a, so that the pin member 51 at the high pressure position _PN2 cannot It is configured so as to be arranged in the second region 61b. That is, the second region 61b has a size (width) smaller than the diameter of the second portion 51b and larger than the diameter of the first portion 51a, so that only the first portion 51a of the pin member 51 is disposed (penetrated), that is, such that The second portion 51b of the pin member 51 cannot be arranged (does not penetrate).

Next, the operation of the second restriction mechanism will be described with reference to FIGS. 9A to 9B . In the second restricting mechanism, when the lever 31 of the fixing mechanism 30 is arranged at the fixed position _PF1 , the pin member 51 is arranged in the first region 61a of the opening 61 of the plate member 60 . In this state, when the internal pressure of the inner pot 3 becomes more than a predetermined value and the pin member 51 is disposed at the high-pressure position P _N2 , the second portion 51b of the pin member 51 is disposed at the bottom of the plate member 60 as shown in FIG. 9A . high. As mentioned above, the second region 61b of the opening 61 of the plate member 60 has a size smaller than the diameter of the second portion 51b of the pin member 51, so in this case, the pin member 51 cannot pass through the second region 61b. . That is, movement of the joystick 31 of the fixing mechanism 30 to the release position _PF2 can be restricted. On the other hand, when the internal pressure of the inner pot 3 is lower than a predetermined value and the pin member 51 is arranged at the low pressure position _PN1 , the first portion 51a of the pin member 51 is arranged at the height of the plate member 60 as shown in FIG. 9B . As described above, the second region 61b of the opening 61 of the plate member 60 has a size larger than the diameter of the first portion 51a of the pin member 51, so in this case, the pin member 51 can pass through the second region 61b. . That is, the joystick 31 can be moved to the release position _PF2 .

The heating cooker 100 of this embodiment can be configured as follows: by providing the above-mentioned second restriction mechanism (the pressure notification mechanism 50, the plate member 60), even when the locking mechanism 40 is released and the fixing mechanism 30 is operated , the lock of the fixing mechanism 30 cannot be released under the state where the internal pressure of the inner pot 3 is relatively high. Thus, even if the user tries to cancel the fixing between the main body 1 and the cover 2 by the fixing mechanism 30 by mistake, as long as the internal pressure does not drop to a safe level, it cannot be released. Therefore, the safety of the heating cooker 100 can be improved. sexual enhancement. Here, as described above, in the second restricting mechanism of the present embodiment, the plate member 60 is attached to a member constituting the fixing mechanism 30 as a mechanism for restricting the operation of the fixing mechanism 30 by the user, that is, as a mechanism for restricting the movement of the lever 31 from the fixed position. The mechanism for moving P _F1 to the release position P _F2 functions. However, the present invention is not limited thereto, and the plate member 60 may be attached to a member constituting the lock mechanism 40 to function as a mechanism that restricts unlocking of the joystick 31 by the lock mechanism 40 .

[Third restricted organization] The heating cooker 100 of the present embodiment may further include a third restricting mechanism for restricting the heat treatment of the inner pot 3 when the main body 1 and the lid 2 are not fixed by the fixing mechanism 30 . As a restriction on the heat treatment of the inner pot 3, for example, at least one of not starting the heat treatment and stopping (stopping) the heat treatment can be included. Hereinafter, the third restriction mechanism will be described with reference to FIGS. 9A to 9B .

As shown in, for example, FIG. 9A , the third restriction mechanism can include a detection unit 70 that detects the fixation between the main body (accommodating unit 10 ) and the cover 2 (inner cover 14 ) by the fixing mechanism 30 . The detection unit 70 can be configured to detect the fixation between the main body 1 and the cover 2 based on the position in the Y-axis direction of at least one of the first fitting member 32 and the second fitting member 33 . In the case of the present embodiment, the detection unit 70 includes a stator configured such that the distance between them changes according to the position in the Y-axis direction of at least one of the first fitting member 32 and the second fitting member 33 . 71 and the movable element 72 are configured to detect the fixation between the main body portion 1 and the cover portion 2 based on the distance between the fixed element 71 and the movable element 72 . For example, the detection part 70 has: the fixed part 71; the arm member 73 which has the movable part 72; and the contact member 74 which rotates the arm member 73. The stator 71 is provided on the main body 1 (at a position where the movable member 72 approaches), and the arm member 73 (the movable member 72 ) and the abutting member 74 are provided on the cover 2 . For example, a Hall IC can be used as the stator 71 , and a magnet can be used as the movable member 72 .

The arm member 73 is, for example, a member extending in the X-axis direction, is provided with the movable element 72 at one end, and is rotatably configured around the other end. The arm member 73 is biased by a biasing member (not shown) such as a spring member, so that the fixed element 71 and the movable element 72 are brought closer together.

The contact member 74 is configured to be in contact with at least one of the first fitting member 32 and the second fitting member 33 and to be movable in the Y-axis direction as the at least one moves. In the case of the present embodiment, the contact member 74 can be configured to be in contact with the second fitting member 33 and to be movable in the Y-axis direction as the second fitting member 33 moves. The contact member 74 is biased in the −Y direction by a biasing member (not shown) such as a spring member.

In addition, the contact member 74 has a slope portion 74 a that is displaced in the +Z direction as it goes in the −Y direction, and when pressed by the second fitting member 33 to move in the +Y direction, the arm member 73 Push up in the +Z direction along the slope portion 74a. For example, when the second fitting member 33 moves in a direction away from the housing portion 10 (+Y direction), as shown in FIG. 9B , the abutment member 74 moves toward + Moving in the Y direction pushes up the arm member 73 to make the movable part 72 away from the fixed part 71 . In this case, the control unit 12 can determine that the fixing between the main body 1 and the lid 2 is released based on the detection result of the detection unit 70 (the output of the fixing member 71), and restrict the heating of the heating unit 11 to the inner pot. 3 heat treatment. On the other hand, when the second fitting member 33 has moved in the direction (-Y direction) approaching the housing portion 10, as shown in FIG. move. Next, the arm member 73 rotates so that the movable member 72 approaches the fixed member 71 . In this case, the control unit 12 determines that the main body 1 and the lid 2 are fixed based on the detection result of the detection unit 70 (the output of the fixture 71 ), and can execute the heating process on the inner pot 3 by the heating unit 11 .

The heating cooker 100 of this embodiment can avoid performing the heating process of the inner pot 3 in a state where the main body 1 and the lid 2 are not fixed by providing the above-mentioned third restriction mechanism (detection unit 70 ). That is, the safety of heating cooker 100 can be improved.

The invention is not limited to the above-described embodiments, and various changes and modifications can be made without departing from the technical idea and scope of the invention.

1: Main body 2: Cover 3: Inner pot 10: Containment 11: Heating part 12: Control Department 13: Human-computer interaction interface section 14: Inner cover 15: handle part 16: Exhaust button 20: exhaust mechanism 21: exhaust hole 30: Fixing mechanism 31: Joystick 40: Locking Mechanism 41: switch 50: Stress Notification Body 51: Pin member 60: Plate member 70: Detection Department 100:Heating cooker

Fig. 1 is a front perspective view of the heating cooker in a state where a lid is attached to a main body. Fig. 2 is a front perspective view of the heating cooker in a state where a lid is removed from a main body. Fig. 3 is a perspective view of the lid as viewed from below. Fig. 4 is a cross-sectional view of the heating cooker in a state where the lid is attached to the main body. FIG. 5A is a diagram showing a configuration example of a pressure notification mechanism. FIG. 5B is a diagram showing a configuration example of a pressure notification mechanism. FIG. 6A is a diagram showing a configuration example of a fixing mechanism of a cover portion. FIG. 6B is a diagram illustrating a configuration example of a fixing mechanism of a cover portion. FIG. 7A is a diagram showing a configuration example of a fixing mechanism of a cover portion. FIG. 7B is a diagram showing a configuration example of a fixing mechanism of a cover portion. FIG. 8A is a diagram illustrating a configuration example of a locking mechanism of a lid. FIG. 8B is a diagram showing a configuration example of a locking mechanism of the lid. FIG. 8C is a diagram showing a configuration example of a locking mechanism of the lid. FIG. 9A is a diagram for explaining the structure of a second restriction mechanism of the lid. FIG. 9B is a diagram for explaining the structure of the second restriction mechanism of the lid.

1: Main body

2: Cover

13: Human-computer interaction interface section

15: handle part

16: Exhaust button

20: exhaust mechanism

21: exhaust hole

30: Fixing mechanism

31: Joystick

40: Locking Mechanism

41: switch

50: Stress Notification Body

51: Pin member

100:Heating cooker

A-A, B-B: line

P _F1 : fixed position

P _F2 : release position

P _L1 , P _L2 : position

P _N1 : 1st pin position, low pressure position

P _N2 : 2nd pin position, high pressure position

X, Y, Z: direction

Claims (19)

A heating cooker, which cooks the ingredients in the inner pot by controlling the heating of the inner pot, characterized in that, This heating cooker has: a main body, which has a housing portion capable of housing the inner pot, and controls the heating of the inner pot housed in the housing portion; and a cover portion capable of being attached to the aforementioned main body portion, The cover part has: an inner cover for making the inside of the storage part a closed space; and a fixing mechanism for fixing the inner cover to the storage part to maintain the closed space, The above-mentioned fixing mechanism has: an operation part, which can be moved between the first operation position and the second operation position by the user's operation; It is constructed in such a way that it fits with the overlapping portion between the aforementioned inner covers, The first fitting member and the second fitting member are configured as follows: Arranged at a position opposite to the inner cover across the accommodating portion, As the operation portion moves to the first operation position, it moves toward the receiving portion respectively, so as to fit into the overlapping portion, and as the operation portion moves to the second operation position, it moves away from the receiving portion, respectively. to move in the direction to release the fitting with the aforementioned overlapped part. Such as the heating cooker of claim 1, wherein, The first fitting member is connected to the operation part, The second fitting member is connected to the operation portion via a link mechanism, The link mechanism is configured to move the second fitting member in a direction opposite to the moving direction of the first fitting member in accordance with the movement of the operation portion. Such as the heating cooker of claim 2, wherein, The link mechanism has a first link member and a second link member, the first link member and the second link member are connected to a common shaft member, and the connection parts connected to the shaft member intersect with each other, Both the first link member and the second link member are connected to the first fitting member at one end and connected to the second fitting member at the other end. The heating cooker according to any one of claims 1 to 3, wherein, The cover part further has a first restricting mechanism for restricting the movement of the operating part to the second operating position, The first restricting mechanism is configured to include a switch that can be slid by the user's operation, and releases the restriction on the movement of the operation portion to the second operation position in a state where the switch is slid. Such as the heating cooker of claim 4, wherein, The first restricting mechanism includes: a lock member for locking the operation portion in a state where the operation portion is located at the first operation position; and a release member for releasing the lock, The release member is connected to the switch and is configured to move as the switch slides, thereby moving the lock member to release the lock. Such as the heating cooker of claim 5, wherein, The fixing mechanism has a connection member connected to the operation part, The locking member is engaged with an engaged portion provided on the connecting member to lock the operating portion in a state where the operating portion is located at the first operating position, The release member is configured to move with the slide of the switch, thereby moving the lock member, and releasing the engagement between the lock member and the engaged portion. Such as the heating cooker of claim 6, wherein, The locking member is configured to be movable in a second axial direction intersecting with the first axial direction in which the releasing member is movable, and includes a protrusion having an inclined surface. The release member has a claw portion that contacts the inclined surface of the protrusion, and when the release member moves in the first axial direction as the switch slides, the claw portion presses the slope of the protrusion. The locking member is moved in the second axial direction to release the engagement between the locking member and the engaged portion. Such as the heating cooker of claim 7, wherein, The first restricting mechanism is configured such that when the release member further moves in the first axial direction along with the sliding of the switch and disengages the claw from the inclined surface of the protruding portion, the claw hooks. The lock member is hooked to the protruding portion to maintain a disengaged state in which the lock member and the engaged portion are disengaged. Such as the heating cooker of claim 8, wherein, The first restricting mechanism is configured to move the locking member due to the movement of the operating portion when the operating portion moves from the first operating position to the second operating position in the released state, thereby releasing the claw. part and the hooking of the aforementioned protruding part. The heating cooker according to any one of claims 1 to 9, wherein, The cover part further has a second restricting mechanism for restricting movement of the operating part from the first operating position to the second operating position, The second restriction mechanism is configured to restrict movement of the operation portion to the second operation position when the internal pressure of the inner pot is equal to or greater than a predetermined value. Such as the heating cooker of claim 10, wherein, The second restricting mechanism is configured to include a pin member that is arranged at the first pin position when the internal pressure is lower than the predetermined value based on the internal pressure of the inner pot, and when the internal pressure is equal to or greater than the predetermined value. In a case where the pin member is arranged at the second pin position, in a state where the pin member is arranged at the second pin position, movement of the operation portion from the first operation position to the second operation position is restricted. Such as the heating cooker of claim 11, wherein, The second restricting mechanism further includes a plate member that is connected to the operation portion and moves along with the movement of the operation portion, The plate member has an opening through which the pin member penetrates, The opening includes a first area and a second area, the pin member is located in the first area when the operation portion is in the first operation position, and the pin member is in the second operation position when the operation portion is in the second operation position. located in the aforementioned zone 2, The second area is configured such that the pin member at the second pin position cannot be arranged in the second area. Such as the heating cooker of claim 12, wherein, The pin member has: a first portion positioned at the height of the plate member when the pin member is at the first pin position; and a second portion positioned at the height of the plate member when the pin member is at the second pin position. height, and having a diameter greater than that of the aforementioned Part 1, The aforementioned first region has a size larger than the diameter of the aforementioned second portion, The second region has a size smaller than the diameter of the second portion and larger than the diameter of the first portion. The heating cooker according to any one of Claims 1 to 13, wherein, The heating cooker further includes: a detection unit for detecting the fixation between the main body and the lid by the fixing mechanism; and a control unit for controlling the heat treatment of the inner pot, The control unit restricts the heat treatment when the detection unit does not detect fixation between the main body unit and the lid unit. Such as the heating cooker of claim 14, wherein, The detection unit detects the fixation between the main body and the cover based on the position of at least one of the first fitting member and the second fitting member. Such as the heating cooker of claim 14 or 15, wherein, The detecting unit has a movable element and a fixed element, and the distance between the movable element and the fixed element changes according to the position of at least one of the first fitting member and the second fitting member. The distance between the piece and the fixing piece detects the fixing between the main body part and the cover part. Such as the heating cooker of claim 16, wherein, The detecting part has an abutting member configured to abut against the at least one, and move the movable part away from the fixed part as the at least one moves away from the accommodating part. Such as the heating cooker of claim 17, wherein, The detecting unit further includes an arm member provided with the movable member at one end and freely rotatable around the other end, The abutting member is configured to rotate the arm member as the at least one moves away from the accommodating portion, thereby keeping the movable part away from the fixed part. The heating cooker according to any one of claims 16 to 18, wherein, The aforementioned movable element is disposed on the aforementioned cover portion, and the aforementioned fixed element is disposed on the aforementioned main body portion.

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