WO2022259636A1

WO2022259636A1 - Rice cooker

Info

Publication number: WO2022259636A1
Application number: PCT/JP2022/007614
Authority: WO
Inventors: 雄介番匠; 礼西嶋; 賢治森田
Original assignee: 日立グローバルライフソリューションズ株式会社
Priority date: 2021-06-07
Filing date: 2022-02-24
Publication date: 2022-12-15
Also published as: CN117202821A; JP2022187067A

Abstract

The present invention improves operability so as to reduce an operation load required for depressing an operation button when an outer lid is opened in a state in which pressure is not applied inside a rice-cooker pot, while also ensuring safety such that the outer lid does not open when an attempt is made to open the outer lid in a state in which pressure is applied inside the rice-cooker pot.　Provided is a rice cooker comprising a rotatable hook lever provided to an outer lid, a hook-receiving part that is provided to an upper frame of a main body and that engages with one end of the hook lever, an operation button that is provided to an upper surface of the outer lid and that depresses the other end of the hook lever to release the engaged state between the hook lever and the hook-receiving part, a frame-shaped button lever that is provided to the outer periphery of the operation button and that moves the hook lever in the depressing direction when the operation button is depressed, and a linking spring that is positioned on a lower surface of the operation button within a frame opposing the button lever and that transmits depression force applied to the operation button to the button lever while the operation button is deformed in accordance with depression force, the linking spring being secured to the button lever in a pre-flexed state.

Description

rice cooker

The present invention relates to a rice cooker, and more particularly to the structure of an operation section for opening and closing the outer lid of a pressure-type rice cooker.

In a conventional rice cooker, if the outer lid is opened while pressure is applied to the inner pot during rice cooking, the inner pressure will force the outer lid to open, and the hot water and rice inside the inner pot will flow into the inner pot. In order to prevent the dangerous state of scattering outside, for example, as shown in Patent Document 1, a structure is provided in which the tip of the hook receiving portion is inclined downward and the tip locking portion of the hook lever is inclined upward. ing. With such a structure, when the inner pot is pressurized, the outer lid is pushed upward, and the downward tip of the hook receiver is positioned on the rotation trajectory of the tip of the hook. It is present and prevents the hook from rotating, making it impossible to open the outer lid.

However, when rice cooking is stopped during rice cooking or the pressure inside the inner pot is released, the pressure inside the inner pot is released rapidly at first, and then it takes a short time until the pressure inside the inner pot completely returns to the same level as the atmospheric pressure. takes time. During this time, the force for lifting the outer lid upward is low, and if an attempt is made to open the outer lid with a strong force at this time, the outer lid may open. The pressure inside the inner pot is lower than during cooking, so there is no danger, but the opening and closing of the outer lid is more forceful than usual, which may make the user feel uneasy. .

Therefore, as shown in Patent Document 2, a frame-shaped button lever is provided on the outer periphery of the operation button for opening and closing the outer cover so that the hook lever is pushed down when the operation button is pushed down. Further, a structure has been proposed in which a connection spring made of a wire that transmits the pressing force of the operation button to the button lever while deforming according to the pressing force of the operation button is provided between the facing frame bodies of the button lever. Due to this structure, when the operation button is pushed down to open the outer cover, if the frictional force with which the hook lever is locked to the hook receiving part is stronger than the restoring force that restores the deformed shape of the connecting spring, the operation button will not operate. The pushing force is absorbed by the deformation of the connecting spring, and the operation button enters the frame of the button lever, preventing the outer lid from opening. That is, in Patent Document 2, even if the operation to open the outer lid with excessive force is performed until the pressure inside the inner pot returns to atmospheric pressure, such as when rice cooking is stopped during rice cooking, the newly provided connection spring The deformation of the lid absorbs the pushing force and improves safety so that the outer lid does not open.

JP-A-2009-316 Japanese Patent Application Laid-Open No. 2010-284290

However, in the structure shown in Patent Document 2, when the lid is opened when there is no pressure applied to the inside of the inner pot, the operation button is pushed down while the connecting spring is flexed. get heavy.

The object of the present invention is to ensure safety so that the outer lid does not open when pressure is applied to the inner pot, and the inner pot is not pressurized. To improve operability so as to lighten an operation load for pushing down an operation button when opening an outer cover.

In order to achieve the above problems, the rice cooker of the present invention is configured as described in the claims.

Specifically, the rice cooker of the present invention includes, for example, an inner pot detachably housed in a main body, an outer lid covering an upper portion of the inner pot, a steam passage provided in the outer lid, and the A pressure regulating valve provided in the steam passage for regulating the pressure in the inner pot, a pressure regulating control means for controlling the opening and closing of the steam passage by operating the pressure regulating valve, and the outer lid being openably and closably held by the main body. a hinge portion; a rotatable hook lever provided on the outer cover opposite to the hinge portion; a hook receiving portion provided on the upper frame of the main body and engaged with one end of the hook lever; and an operation button provided on the upper surface of the hook lever for releasing the locked state between the hook lever and the hook receiving portion by pushing down the other end of the hook lever; A frame-shaped button lever that operates in a direction to push down the hook lever, and a button lever that is positioned below the operation button between the opposing frames of the button lever, and the operation button while deforming according to the push-down force of the operation button. The rice cooker is equipped with a connection spring for transmitting the pushing force of (1) to the button lever, wherein the connection spring is fixed to the button lever in a pre-bent state.

Preferably, the connecting spring is deformed so that the button lever is not pushed down when the operation button is pushed down while the pressure is applied inside the inner pot, and the pressure is applied inside the inner pot. It is fixed to the button lever in a flexed state so as not to be deformed when the operation button is pushed down in a non-existent state.

According to the present invention, it is possible to ensure safety so that the outer lid does not open when pressure is applied to the inside of the inner pot, and the inner pot is not pressurized. The operation load for pressing down the operation button when opening the outer cover is lightened, and the operability of opening the outer cover can be improved.

Problems, configurations, and effects other than those described above will be clarified by the following description of the embodiments.

1 is a longitudinal sectional view of a rice cooker according to one embodiment of the present invention; FIG. FIG. 2 is an explanatory view of the inside of the rice cooker in FIG. 1 with the lid outer surface member cover of the outer lid removed. Fig. 2 is a main enlarged cross-sectional view (part A in Fig. 1) of the outer lid of the rice cooker in Fig. 1; FIG. 2 is a block diagram of control of the rice cooker in FIG. 1; FIG. 2 is a perspective view illustrating an opening/closing mechanism of an outer lid of the rice cooker in FIG. 1; 1. It is a perspective view when the connection spring in the opening-and-closing mechanism of the outer cover of the rice cooker in FIG. 1 is deform|transforming. It is the figure (a) which shows the fixed state of the connection spring used for one Example of this invention, and the figure (b) which shows the fixed state of the conventional connection spring. FIG. 4 is a diagram showing the states of a connecting spring when normally fixed and when an operation button is pushed in according to an embodiment of the present invention (Figures (a) and (b) within a square dotted line are detailed views of part B). FIG. 5 is an external view of a rice cooker according to another embodiment of the present invention; It is a figure explaining the inside which remove|eliminated the cover outer surface member cover of the outer cover of the rice cooker of FIG. It is a figure explaining the method of bending and attaching a connection spring to the button lever 14 of FIG. FIG. 10 is a diagram showing the states of the connecting spring when normally fixed and when the operation button is pushed in according to another embodiment of the present invention (the diagram inside the solid square line is a detailed diagram of the part D, and the diagram on the right side within the solid square line is the Figure showing the movement of the connecting spring).

An embodiment of the present invention will be described below with reference to the drawings.

First, a structural example of a rice cooker to which the present invention is applied will be described with reference to FIGS. 1 to 6. FIG. A similar structure of a rice cooker is also described in Patent Document 2, and the structure of the rice cooker is not limited to the following configuration.

In FIG. 1, the main body 1 of the rice cooker is provided with a protective frame 12 whose upper surface is open inside, and the inner pot 2 is detachably housed in the protective frame 12 .

The inner pot 2 has a bottomed tubular shape with an open upper surface, and its upper end is bent outward substantially horizontally so that it can be easily attached and detached from the main body 1 and placed on the upper surface of the main body 1 .

A heating means 4 for induction-heating the bottom surface of the inner pot 2 is provided on the outer bottom of the protective frame 12, and a controller 5 is arranged in the space on the front side between the protective frame 12 and the main body 1. The heating means 4 is controlled by the function of the part 5 .

As shown in FIGS. 2 and 3, the outer lid 3 is composed of a lid inner surface member 3a, a lid outer surface member 3b, and a lid outer surface member cover 3c.

An inner lid 6 that covers the top opening of the inner pot 2 in FIG. 1 is detachably attached to the lid inner surface member 3a. A seal packing 7 attached to the periphery of the lower surface of the inner lid 6 abuts against the entire circumference of the upper end of the inner pot 2 to keep the space formed by the inner pot 2 and the inner lid 6 in a sealed state.

A pressure regulating valve 8 that communicates with the inner pot 2 is provided at a substantially central portion of the inner lid 6 . When the pressure regulating valve 8 is closed, the steam passes through the steam passage 9 provided in the outer lid 3 to the outer lid 3 while adjusting the pressure inside the inner pot 2 to a predetermined pressure (1.3 atmospheres in this embodiment). It is guided to a detachably attached steam port cap 18 and discharged out of the main body 1 through an exhaust port 18a. When the pressure regulating valve 8 is opened, the inside of the inner pot 2 and the outside air are communicated through the exhaust port 18a, and no pressure is applied to the inner pot 2.

As shown in FIG. 1, one side (right side in the drawing) of the outer lid 3 (lid inner surface member 3a) is provided with a rotary shaft 22 (hinge portion) that supports the outer lid 3 so that the outer lid 3 can be opened and closed. As shown in FIGS. 3, 5 and 6, the side of the outer lid 3 facing the rotating shaft 22 (the left side in the drawing) is engaged with a hook receiving portion 17 provided on the main body 1 to prevent the outer lid 3 from opening. A hook lever 15 having a substantially U-shaped cross section is provided, and the hook lever 15 is rotatably supported with a hook shaft 16 as a fulcrum.
As shown in FIGS. 3, 5 and 6, the hook lever 15 has a hook-shaped portion 15a at one end and a depression portion 15b at the other end with the hook shaft 16 interposed therebetween. When locked to the portion 17, the outer lid 3 will not open unless the push-down portion 15b is pushed. As shown in Patent Document 1, the tip of the hook receiving portion 17 is inclined downward, and the hook-shaped portion 15a of the hook lever 15 is inclined upward. When the inside of the inner hook is pressurized, the outer lid is pushed upward, and the downward tip of the hook receiving portion 17 is present on the rotation locus of the hook-shaped portion 15a, thereby holding the hook lever. 15 is made unrotatable and the outer lid 3 is made impossible to open.

The lid outer surface member 3b of the outer lid 3 has a substantially rectangular notch in the portion positioned substantially on the upper surface of the pressing portion 15b of the hook lever 15, and the notch 3b-1 surrounds the operation button 10 and the operation button 10. A frame-shaped (substantially rectangular) button lever 14 is arranged.
The operation button 10 and the button lever 14 are rotated to the edge of the notch 3b-1 of the lid outer surface member 3b by the button shaft 10a and the button lever shaft 14a coaxial with the button shaft 10a on the side opposite to the pressing portion 15b of the hook lever 15. The push-down portion 15b side of the button lever 14 is positioned on the upper surface of the push-down portion 15b. At this time, the operation button 10 is pivotally supported by the button shaft 10a so as to protrude upward from the lid outer surface member cover 3c.

Between the frame bodies on the side of the button lever 14 not facing the button shaft 10a (in the direction perpendicular to the button shaft 10a), there is an elastic material such as stainless steel wire, which is positioned on the lower surface of the operation button 10 and placed on the lower surface. A connecting spring 13 made of wire is provided. Both ends of the connecting spring 13 are hooked on the frame of the button lever 14 as shown in FIGS.

In this embodiment, the connecting spring 13 is bent and fixed to the frame of the button lever 14 . FIG. 7 shows the state of the connecting spring 13 when it is fixed to the button lever 14. As shown in FIG. (a) shows the fixed state of the connecting spring 13 of this embodiment, and (b) shows the fixed state of the conventional connecting spring 13 for comparison. In this embodiment, both ends of the button lever 14 are fixed to the frame so that the connection spring 13 is bent by the frame. By intentionally bending and fixing the connecting spring 13 in advance, the connecting spring 13 becomes a rigid body that does not deform with a small pressing force from above the operation button 10 . That is, the restoring force of the connecting spring 13 when fixed is held down by the frame, and unless a pressing force in the opposite direction larger than the restoring force of the connecting spring 13 held down by the frame acts on the connecting spring 13, the connecting spring 13 will not move. 13 does not transform. Therefore, in this embodiment, the state of a rigid body means a state in which the connecting spring 13 is not deformed by a pressing force of the same magnitude as the restoring force of the connecting spring 13 held by the frame. Since the connecting spring 13 becomes a rigid body when the outer cover is opened when no pressure is applied to the inside of the inner pot, the pushing force is applied in a state where the restoring force of the connecting spring 13 is not applied when the operation button 10 is pushed. can be transmitted to the button lever 14. A method of fixing the connecting spring 13 to the button lever 14 will be described later.

When the operation button 10 is pushed from above, the button lever 14 rotates around the button lever shaft 14a to push down the pressing portion 15b of the hook lever 15, and the pushed down hook lever 15 rotates around the hook shaft 16. Then, the hook-shaped portion 15a of the hook lever 15 is released from the hook receiving portion 17, and the outer lid 3 is opened.

A steam temperature sensor 19 is provided in the steam passage 9 between the steam port cap 18 and the pressure regulating valve 8 so as to be positioned near the pressure regulating valve 8 .

The controller 5 controls the steam temperature sensor 19, the bottom temperature sensor 20 for detecting the temperature of the bottom of the inner pot 2, the heating means 4, and the pressure regulating valve 8 as shown in FIG. The pressure regulation control means 11 is connected, and the heating means 4 and the pressure regulation valve 8 are closed according to information from the steam temperature sensor 19 and the pot bottom temperature sensor 20, and the pressure regulation valve 8 is opened to open the inner pot 2. Switching control is performed between a state in which no pressure is applied to the

The steam port cap 18 is detachably attached to the outer lid 3 from the upper surface so as to be connected to the steam passage 9 . The steam port cap 18 is provided inside the steam port cap 18 with a long air passage for guiding the steam flowing from the steam passage 9 to the exhaust port 18a so as to lower the temperature of the steam discharged from the steam passage 9.

When the user puts an appropriate amount of rice and water into the inner pot 2, inserts the inner pot 2 into the protective frame 12, and closes the outer lid 3, the outer lid 3 rotates about the rotating shaft 22, and the hook lever 15 is pulled. The hook-shaped portion 15a of the hook lever 15 rides over the hook receiving portion 17 by rotating around the hook shaft 16, and is engaged with the hook receiving portion 17 to close the outer lid 3. As shown in FIG.

When the outer lid 3 is opened in this state, the space formed by the inner pot 2 and the inner lid 6 communicates with the outside air through the steam passage, so that no pressure is applied and the outer lid 3 is opened by the pressure. There is no force to push it upwards. Therefore, the hook-shaped portion 15a of the hook lever 15 and the hook-receiving portion 17 have a weak locking force, and as shown in FIGS. When the operation button 10 is pushed downward (downward arrow), the connection spring 13 is bent and fixed against the downward movement force of the operation button 10, and is in a rigid body state. Since it is not deformed by the pushing force, the force applied to the operation button 10 is transmitted to the button lever 14 in a state where the restoring force due to deformation is not applied, and the button lever 14 pushes the pressing portion 15b of the hook lever 15 downward. As a result, the hook lever 15 rotates about the hook shaft 16 to release the engagement between the hook-shaped portion 15a of the hook lever 15 and the hook receiving portion 17, and the outer lid 3 is opened. For comparison, FIG. 8(b) shows the state of the conventional connection spring 13. As shown in FIG. In the conventional fixed state of the connecting spring 13, the connecting spring 13 is not flexed, so the user pushes the operation button 10 downward (downward arrow) to open the outer lid 3 when no pressure is applied to the inner pot. When operated, the operation button 10 is pushed down while the connecting spring 13 is bent. Therefore, the restoring force (upward arrow) against the deformation of the connecting spring 13 increases the operating load applied during operation.

When the user closes the outer lid 3 again and operates the rice cooking start button (not shown) on the operation unit to cook rice, the control unit 5 starts to cook rice.

According to the predetermined rice cooking operation, the soaking process is first carried out to promote water absorption into the rice. The heating means 4 heats the inner pot 2 (400 W in this embodiment) according to the predetermined temperature (60° C. in this embodiment) of the pot bottom temperature sensor 20, and the water temperature inside the inner pot 2 is maintained at 55 to 60° C. to promote water absorption into the rice.

After a predetermined time (15 minutes in this embodiment) has passed, the control unit 5 increases the heating amount of the heating means 4 (1000 W in this embodiment), and the pressure control means 11 operates so that the pressure regulating valve 8 is closed. It operates to adjust the pressure in the kettle 2.

Eventually, when the water temperature inside the inner pot 2 rises, the pressure inside the inner pot 2 rises due to the generation of steam, and when it rises to 1.3 atm, which is the operating pressure of the pressure regulating valve 8, the boiling point of 107°C corresponding to 1.3 atm Boiling starts at , and the steam released by the operation of the pressure regulating valve 8 is released to the steam passage 9 .
Since the steam passage 9 is provided with a steam temperature sensor 19 near the pressure regulating valve 8, the temperature rise of the steam temperature sensor 19 heated by the steam detects the inflow of steam, and the controller 5 detects the temperature rise above a certain temperature. Recognizing boiling by becoming

The control unit 5 reduces the heating amount of the heating means 4 (500 W in this embodiment), but this heating amount maintains the operating pressure of the pressure regulating valve 8, 1.3 atmospheres, and the boiling point of this pressure, 107°C. continue to boil or continue intermittently.

During this time, when the pressure is applied to the inner pot 2, the outer lid 3 is pushed upward with a force of about 100 kg. It does not come off easily due to the frictional force caused by the load.

In this state, if the user accidentally operates the operation button 10 to open the outer cover 3, the hook lever 15 cannot be easily rotated with a slight force, so the button lever 14 will not move downward either. Can not. Therefore, when the operation button 10 is strongly pushed, a pressing force in the opposite direction, which is larger than the restoring force of the connecting spring 13 held by the frame, acts on the connecting spring 13, and the connecting spring 13 is deformed. , absorbs the operating force of the operating button 10 . As shown in FIG. 6, when the operating button 10 is strongly pushed, the connecting spring 13 is deformed downward in proportion to the pushing force, and the operating button 10 is deeply inserted into the frame of the button lever 14 . At this time, a restoring force acts on the connecting spring 13 to return the previously bent and deformed shape to its original shape. Even if force acts on the button lever 14 via the connecting spring 13, the button lever 14 does not move downward. As a result, even if the user presses the operation button 10, the outer lid 3 will not open, ensuring safety.

On the other hand, when the off operation is performed to stop rice cooking in the middle of rice cooking, the control unit 5 stops supplying power to the heating means 4 to stop heating, stops the operation of the pressure regulation control means 11, The pressure regulating valve 8 is opened.

As a result, when the pressure regulating valve 8 is opened, the steam in the inner pot 2 passes through the steam passage 9 and the air passage in the steam port cap 18 and is discharged from the exhaust port 18a. However, since the path until the steam is released is long, path resistance occurs, and the pressure in the inner pot 2 does not instantly become the same pressure as the outside air. , and return to the same pressure as atmospheric pressure over time.

When the operation to open the outer lid 3 is performed while this weak pressure remains in the inner pot 2, the weak pressure remains in the inner pot 2 by applying a restoring force to the connecting spring 13 to deform and return to its original state. By setting the hook-shaped portion 15a of the hook lever 15 and the hook receiving portion 17 to be smaller than the frictional force that locks the hook-shaped portion 15a of the hook lever 15 and the hook receiving portion 17, the connecting spring 13 is deformed and the operation button 10 is operated. Since the force is absorbed, the hook-shaped portion 15a of the hook lever 15 and the hook receiving portion 17 will not be disengaged. In addition, in order to make the connecting spring 13 rigid, the spring force of the connecting spring 13 is simply strengthened, and when the connecting spring 13 is fixed to the frame without bending as in the conventional case shown in FIG. However, in this embodiment, it is possible to set both the state of the rigid body and the restoring force to be small, and both the safety of opening the outer lid and the operability of the operation button can be improved. can do

As described above, according to this embodiment, even if the pressure inside the inner pot does not return to the atmospheric pressure, such as when rice cooking is stopped during rice cooking, the outer lid is opened with an excessive force. To provide a rice cooker in which the outer lid cannot be opened, a user does not feel uneasy, and the outer lid can be easily opened even in a state where no pressure is applied to the inside of the inner pot.

Further, even if the operation button 10 is strongly pushed while pressure is applied to the inner pot 2, since the operation button 10 is pushed inside the frame of the button lever 14, the height of the outer lid 3 does not need to be increased. , can provide a compact rice cooker.

In the above-described embodiment, the operation button 10 is pivotally supported by the button shaft 10a. It does not have to be supported by the button shaft 10a. An embodiment in which the operation button 10 is not pivotally supported by the button shaft 10a and a method of attaching the connecting spring 13 to the button lever 14 will be described below with reference to FIGS. 9 to 12. FIG.

FIG. 9 shows the appearance of the rice cooker of this embodiment, and FIG. 10 is a diagram illustrating the inside of the rice cooker of FIG. 9 with the lid outer surface member cover removed. In this embodiment, a plurality of holes are formed in the button lever 14, and a plurality of claw portions 10-2 provided on the operation button 10 are inserted into some of the holes to prevent the operation button 10 from coming off. , the operation button 10 is made relatively movable with respect to the button lever 14. - 特許庁Further, a rib 10-1 that contacts the connecting spring 13 is provided at the central lower portion of the operation button 10. As shown in FIG. A rib 10-1 of the operation button 10 penetrates through a rib through-hole 14-1 (see FIG. 11) formed in the button lever 14 and comes into contact with the connecting spring 13. As shown in FIG. The connecting spring 13 is attached to the button lever 14 in a bent state. Although the button lever shaft 14a of the button lever 14 is located on the opposite side of the above embodiment (see FIGS. 5 and 6), the button lever shaft 14a is arranged at the same position as in the above embodiment. Also good.

FIG. 11 shows how to attach the connecting spring 13 to the button lever 14 in a bent state. Two long holes 14-2 are formed in the button lever 14, and a rib through hole 14-1 through which the rib 10-1 of the operation button 10 passes is formed between the two long holes 14-2. there is As shown in FIGS. 11(a) and 11(b), one end of the connecting spring 13 is inserted into one long hole 14-2, passed through the lower part of the rib through-hole 14-1, and passed through the other long hole 14-. 2 (c). In this state, the connecting spring 13 is rotated so that both ends of the connecting spring 13 are engaged with the frame of the button lever 14 . As a result, as shown in FIG. 7(a), the connection spring 13 is bent and fixed.

FIG. 12 shows the state of the connection spring 13 in this embodiment when it is normally fixed and when the operation button is pushed. In this embodiment, as in the above embodiment, when the outer lid 3 is to be opened with no pressure applied to the inner pot 2, the user presses the operation button 10 with a light force to open the outer lid 3. When the operation button 10 is pushed downward, the connection spring 13 is flexed and fixed against the force of downward movement of the operation button 10, and is in a rigid body state. The force applied to the operation button 10 is transmitted to the button lever 14 (arrow I), and the button lever 14 pushes the pressing portion 15b of the hook lever 15 downward (arrow II). As a result, the hook lever 15 rotates about the hook shaft 16 to release the engagement between the hook-shaped portion 15a of the hook lever 15 and the hook receiving portion 17, and the outer lid 3 is opened. Also in this embodiment, when the outer lid is to be opened while pressure is applied to the inner pot, it is possible to ensure safety so that the outer lid does not open, and the pressure is not applied to the inner pot. The operability can be improved so that the operation load for pushing down the operation button when opening the outer lid of the time can be lightened.

It should be noted that the present invention is not limited to the above-described examples, and includes various modifications. For example, the above embodiments have been described in detail for easy understanding of the present invention, and are not necessarily limited to those having all the described configurations. In addition, it is possible to replace part of the configuration of one embodiment with the configuration of another embodiment, and it is also possible to add the configuration of another embodiment to the configuration of one embodiment. Moreover, it is possible to add, delete, or replace a part of the configuration of each embodiment with another configuration.

For example, in the above embodiment, the connecting spring 13 is provided between the frame bodies of the button lever 14 on the side not facing the button shaft 10a, but it can also be provided between the frame bodies on the side facing the button shaft 10a.

DESCRIPTION OF SYMBOLS 1... Main body 2... Inner pot 3... Outer cover 4... Heating means 5... Control part 6... Inner cover 8... Pressure regulating valve 10... Operation button 13... Connection spring 14... Button lever 15 … hook lever.

Claims

An inner pot detachably housed in a main body, an outer lid covering the upper portion of the inner pot, a steam passage provided in the outer lid, and a pressure inside the inner pot provided in the steam passage for adjusting pressure. a pressure regulating valve; pressure regulating control means for operating the pressure regulating valve to control the opening and closing of the steam passage; a hinge portion for holding the outer cover to the main body so as to be openable and closable; and the outer cover opposite to the hinge portion. a rotatable hook lever provided in the body; a hook receiving portion provided on the upper frame of the main body and engaged with one end of the hook lever; an operation button for releasing the locked state between the hook lever and the hook receiving portion, and a frame-shaped button lever provided on the outer periphery of the operation button and operating in the direction of pushing down the hook lever when the operation button is pushed down. and a connecting spring located on the lower surface of the operation button between the opposing frame bodies of the button lever and transmitting the pressing force of the operation button to the button lever while deforming according to the pressing force of the operation button. is a rice cooker,
The rice cooker, wherein the connecting spring is fixed to the button lever in a pre-bent state.
In the rice cooker according to claim 1,
The connection spring is
When the operation button is pushed down while pressure is applied inside the inner pot, the button lever is deformed so as not to be pushed down,
A rice cooker, wherein the button lever is fixed in a bent state so as not to be deformed when the operation button is pushed down while no pressure is applied to the inside of the inner pot.