JP2022133505A - rice cooker - Google Patents

Abstract

To solve a problem of a rice cooker in which, if closing a lid body without a lid is repeated, an inner pot, particularly the upper surface part, is damaged by the impact of collision, and the appearance of the inner pot is impaired.SOLUTION: In a rice cooker, when an inner lid is uninstalled in an external cover and a body is rotated in the closing direction with the external cover open as a reference, an inner lid stopper moves with the rotation after coming into contact with the upper end of the outer periphery of the inner pot, so that the inner lid stopper is abutted on the upper face of a wall part and the rotation of the external cover is regulated.SELECTED DRAWING: Figure 6

Description

TECHNICAL FIELD The present invention relates to a rice cooker comprising a main body and a lid, and an inner lid attached to the lid.

In a rice cooker consisting of a main body and a lid body, and having an inner lid detachably attached to the lid body, it is necessary to prevent rice from being cooked in a state where the inner lid is not attached to the lid body.
For example, in Patent Document 1, a protruding portion is provided on the lower surface of the lid body and moves backward when the inner lid is attached to the lid body, and the lid body is closed without the inner lid attached. Also, by preventing the lid from closing due to the projecting part coming into contact with the upper surface of the inner pot stored in the main body, it prevents rice from being cooked without the inner lid attached.

Japanese Patent No. 6456222

However, in Patent Document 1, if the operation of closing the lid body without the inner lid attached is repeated, the inner pot, especially the upper surface portion, will be damaged by the impact of the collision, and the outer appearance of the inner pot will be damaged. There was a problem that it got worse. The inner pot, especially the top surface, is particularly noticeable during the rice-cooking process, such as when the user puts in water and rice and rinses the rice. .

The present disclosure has been made to solve such problems, and provides a rice cooker that can prevent rice from being cooked in a state where the inner lid is not attached to the lid without damaging the inner pot. intended to provide.

An inner pot comprising an inner pot with an open top, a main body for housing the inner pot, an outer lid rotatably attached to the main body via a hinge, and an inner lid attached to the lower surface of the outer lid. has a bottom portion and a cylindrical outer peripheral portion continuous from the bottom portion, the main body has a wall portion positioned outside the outer peripheral portion of the inner pot and below the upper end of the outer peripheral portion; It has an inner lid stopper that protrudes toward the main body, the position of which is different depending on whether the inner pot is attached or not attached. When the main body is rotated in the closed direction based on the open state, the inner lid stopper comes into contact with the upper end of the outer peripheral portion of the inner hook and then moves with the rotation, and the inner lid stopper contacts the upper surface of the wall portion. A rice cooker is provided in which rotation of the outer lid is regulated by abutment.

To prevent the upper surface of the inner lid from being damaged even if the lid body is closed with the inner lid removed from the outer lid.

1 is a perspective view showing a rice cooker according to Embodiment 1; FIG. 1 is a perspective view of the rice cooker according to Embodiment 1, showing a state in which the lid body is opened, and in a state in which the inner lid is attached to the outer lid. FIG. 1 is a perspective view of the rice cooker according to Embodiment 1, showing a state in which the lid is opened, and is a diagram in which the inner lid is removed from the outer lid. FIG. 1 is a schematic vertical cross-sectional view of a rice cooker according to Embodiment 1. FIG. 1 is a schematic vertical cross-sectional view of a portion of a rice cooker according to Embodiment 1. FIG. FIG. 5 is a schematic partial vertical cross-sectional view showing an operation of closing the lid body in the rice cooker according to Embodiment 1, with the inner lid removed from the outer lid. FIG. 5 is a schematic partial vertical cross-sectional view showing an operation of closing the lid body in the rice cooker according to Embodiment 1, with the inner lid removed from the outer lid. FIG. 5 is a schematic partial vertical cross-sectional view showing an operation of closing the lid body in the rice cooker according to Embodiment 1, with the inner lid removed from the outer lid. FIG. 2 is a schematic vertical cross-sectional view of the rice cooker according to Embodiment 1 in a state in which the inner lid is removed from the outer lid and the inner pot is removed from the main body.

The rice cooker 100 will be described in detail below with reference to the drawings. In the drawings below, the size relationship of each component may differ from the actual size. Moreover, in the following drawings, the same reference numerals denote the same or corresponding parts, and this applies throughout the specification. Furthermore, the forms of the components shown in the entire specification are merely examples, and are not limited to these descriptions.

Embodiment 1.
FIG. 1 is a perspective view showing rice cooker 100 according to Embodiment 1. FIG. FIG. 2 is a perspective view of rice cooker 100 according to Embodiment 1, showing a state in which the lid is opened. 3 is a perspective view showing a state in which the inner lid is removed from the lid in FIG. 2. FIG. 4 is a schematic vertical cross-sectional view of the rice cooker in the state of FIG. 1. FIG. FIG. 5 is a partial vertical cross-sectional schematic view enlarging a part of the front portion in FIG. 4 . For convenience of explanation, in FIG. 1, the directions indicated by dotted arrows are front and rear (back), the directions indicated by solid arrows are right and left or horizontal, and the directions indicated by thick arrows are up and down.

As shown in FIGS. 1 to 5, the rice cooker 100 is mainly composed of a main body 1 and a lid 2. As shown in FIGS. Inside the main body 1, there is an inner pot storage part 11 which is a storage space in which a bottomed tubular inner pot 3 holding a food to be heated such as rice is detachably stored. A heating coil 12 as a heating means for induction heating the inner pot 3 is arranged under the bottom surface of the housing portion 11 , and a body heater 13 is arranged on the side surface of the inner pot housing portion 11 .

The lid body 2 is detachably attached to an outer lid 20 forming an outer shape and to the surface of the outer lid 20 facing the inner pot 3, that is, the lower surface. An inner lid 30 for closing the top opening of the hook 3 is provided. An outer lid 20 is rotatably connected to a hinge portion 14 on the rear upper side of the main body 1 and biased in the opening direction by a hinge spring 15 .

The inner pot 3 includes a bottom portion 3a having a slightly upwardly convex central portion, a tubular lower outer peripheral portion 3b continuous with the bottom portion 3a, and an upper portion stepped outward from the upper end portion of the lower outer peripheral portion 3b. The outer portion of the upper end of the upper outer peripheral portion 3c forms an upper end R surface portion 3c1 gently sloping downward. When Ra is the inner diameter of a circle obtained by horizontally cutting the outer peripheral portion 3b, the inner diameter Rb of a horizontally cut circle of the upper outer peripheral portion 3c is 1.1 Ra. That is, the opening seen from above the upper peripheral portion 3c is larger than the opening seen from above of the lower peripheral portion 3b.

Each heating coil 12 is formed in an annular shape, and a bottom thermistor 16 for detecting the temperature of the inner pot 3 is installed at the center of the bottom surface of the inner pot accommodating portion 11 .

A front surface of the main body 1 is provided with a lid open button 17 that is pushed when the lid body 2 is opened. Behind the lid open button 17, there is provided a body side engaging portion 18 which is connected to the lid open button 17 and has a claw portion 18a directed forward at the upper portion thereof. When the lid open button 17 is pushed in with a backward force applied from the front surface of the main body 1, the main body side engaging portion 18 is also moved rearward.

A wall portion 19 is formed on the rear side of the body side engaging portion 18 . The wall portion 19 has a vertically extending standing portion 19a, a roof portion 19b extending forward of the main body 1 at the upper end of the standing portion 19a, and a descending portion 19c extending downward from the front end of the roof portion 19b. . In addition, the standing portion 19a is located outside the outermost peripheral edge of the outer peripheral portion of the inner hook 3, and the upper end of the roof portion 19b is higher than the upper end of the body-side engaging portion 18, The lower end of the descending portion 19c is positioned near the upper end surface of the pawl portion 18a of the body-side engaging portion 18. As shown in FIG.

An operation panel 21 having various operation buttons such as a rice cooking button is provided on the upper surface of the outer lid 20 . Inside the outer cover 20, an operation board 22 is provided on which various input switches corresponding to various operation buttons are mounted. The operation board 22 outputs control signals based on inputs from various input switches. The circuit that constitutes the operation board 22 can be composed of hardware such as a circuit device that realizes its function, or can be composed of an arithmetic unit such as a CPU or a microcomputer and software that defines its operation. can. A lid sensor 23 for detecting the temperature inside the inner pot 3 is provided on the lower surface of the outer lid 20 .

A lid-side engaging portion 24 having a claw portion 24a extending rearward is provided on the front lower inner surface of the outer lid 20 . When the lid 2 is closed on the upper part of the main body 1, the lid-side engaging portion 24 and the main-body-side engaging portion 18 are engaged (the pawl portion 24a is caught by the pawl portion 18a), thereby 2 is fixed to the body 1 . Further, when the lid open button 17 is pushed in with a backward force applied from the front surface of the main body 1, the main body side engaging portion 18 also moves rearward, the pawl portion 24a is disengaged from the pawl portion 18a, and by the force of the hinge spring 15, The lid body 2 moves upward from the main body 1 and becomes an open state.

An inner lid stopper 25 projecting downward is provided on the lower surface of the outer lid 20 so as to be slidable forward and backward. The inner lid stopper 25 includes a flat plate portion 25a, a spring restraining portion 25b protruding upward from the flat plate portion 25a, an inner lid restraining portion 25c extending downward and forming a recess toward the rear, and an inner lid stopper 25b. It is composed of a projecting portion 25d extending diagonally forward and downward from the lid holding portion 25c. Further, the outer lid 20 is provided with a spring 26 whose one end is fixed and whose other end contacts the spring restraining portion 25b, and exerts a biasing force in the extending direction, that is, pushing the spring restraining portion 25b backward. .

Two support portions 27 are provided at a distance from each other on the rear surface side of the inner side surface of the outer lid 20 .
Furthermore, the inner lower surface of the outer lid 20 is formed with a steam path space 28 that is greatly recessed upward from the center toward the rearward direction, that is, toward the connecting portion connected to the hinge portion 14 . It communicates with a steam outlet 29 provided on the side.

The inner lid 30 is mainly made of disc-shaped sheet metal, and has a first protrusion 31 and a second protrusion 32 provided at a position opposite to the first protrusion 31 . . The inner lid 30 is attached to the outer lid 20 by inserting the first protrusion 31 into the support portion 27 of the outer lid 20 and stopping the second protrusion 32 on the inner lid restraining portion 25c of the inner lid stopper 25. can be fixed.

When the second protrusion 32 is stopped by the inner lid restraining portion 25c of the inner lid stopper 25, the inner lid stopper 25 needs to be slid forward against the biasing force of the spring 26 (shrinking the spring 26). There is That is, the position of the inner lid stopper 25 differs between the state in which the inner lid 30 is attached in FIG. 2 and the state in which the inner lid 30 is not attached in FIG. The one in the state where the

As shown in FIGS. 4 and 5, with the inner lid 30 attached to the outer lid 20, the lid body 2 moves in the direction of closing the main body 1 based on the open state of the lid body 2 (state shown in FIG. 2). When the hinge portion 14 is rotated, the body-side engaging portion 18 and the lid-side engaging portion 24 are engaged with each other. Also, in this state, the projecting portion 25 d of the inner lid stopper 25 is positioned between the lid side engaging portion 24 and the front end of the wall portion 19 .

In this way, the protruding portion 25d is formed in the wall portion when the lid body 2 rotates in the direction of closing the main body 1 with the lid body 2 in the open state as a reference while the inner lid 30 is attached to the outer lid 20. 19, and even when the lid 2 is closed, the protrusion 25d does not interfere with the engagement between the body-side engaging portion 18 and the lid-side engaging portion 24. As shown in FIG. Therefore, by rotating the lid 2, the body-side engaging portion 18 and the lid-side engaging portion 24 are engaged with each other, the lid 2 covers the main body 1, and rice cooking can be started.

Next, the operation of closing the lid body 11 in a state in which the inner lid 30 is not attached to the outer lid 20 will be described with reference to FIGS.
When the inner lid 30 is not attached to the outer lid 20, the inner lid restraining portion 25c of the inner lid stopper 25 is not pushed forward by the inner lid 30, and the spring 26 is fully extended. In this state, the inner lid stopper 25 is positioned rearward compared to the state in which the inner lid 30 of FIG. 4 is attached.

In this state, when the lid body 2 is rotated around the hinge portion 14 in a direction to close the main body 1 with the lid body 2 in the open state (the state shown in FIG. 3) as a reference, the inner portion as shown in FIG. The tip of the projecting portion 25d of the lid stopper 25 contacts the upper end rounded surface portion 3c1 of the inner hook 30. As shown in FIG.

In this state, when a force is applied to the lid body 2 from above to advance the rotation, as shown in FIG. As a result, the inner lid stopper 25 slides forward, and furthermore, the inner lid stopper 25 slides forward so that the rear surface of the projecting portion 25d slides on the upper end R surface portion 3c1 of the inner hook 3, and finally Then, as shown in FIG. 8, the tip of the protruding portion 25d abuts on the roof portion 19b of the wall portion 19, and the lid body 2 does not rotate even if force is applied from above. movement will be restricted. In this state, the body-side engaging portion 18 and the lid-side engaging portion 24 are not engaged.

FIG. 9 is a schematic vertical cross-sectional view of the rice cooker with the lid 2 closed, with the inner lid 30 not fixed to the outer lid 20 and the inner pot 3 removed from the main body 1. be.
Since there is no inner hook 3, the protruding portion 25d does not come into contact with the inner hook 3, and is located on the rear side of the wall portion 19. As a result, the body-side engaging portion 18 and the lid-side engaging portion 24 are engaged. become compatible.

In this embodiment, the inner pot 3 is placed on the main body 1. However, even if the inner pot 30 is not attached to the outer lid 20 and the inner pot 30 is not attached to the outer lid 20, the protruding portion 25d contacts the inner pot 30 and then the inner pot 30 is closed. Since the slide moves as it is, the impact is very small. Finally, the protruding portion 25d of the inner lid stopper 25 comes into contact with the roof portion 19b of the wall portion 19, and the rotation stops. never hurt.

Further, when the inner pot 3 is not placed on the main body 1 and the inner lid 30 is not attached to the outer lid 20, the main body 1 can be closed. The main body 1 can be closed by the lid body 2 when it is closed, and water and foreign matter can be prevented from entering the main body 1.例文帳に追加

In this embodiment, when the lid body 2 is closed without the inner lid 30 attached, the tip of the projecting portion 25d contacts the upper end R surface portion 3c1 of the inner hook 3. However, for example, The rear surface of the protruding portion 25d may contact the upper end R surface portion 3c1 of the inner hook 3, and the inner lid stopper 25 may be slid forward.

The protruding portion 25d of the inner lid stopper 25 may also be curved or wavy as long as it slides on the upper end rounded surface portion 3c1 of the inner pot 3.

1 main body, 2 lid, 3 inner pot, 3a bottom, 3b outer periphery, 3c upper outer periphery,
3c1 upper end R surface portion, 11 inner pot housing portion, 12 heating coil, 13 body heater,
14 Hinge Part 15 Hinge Spring 16 Bottom Thermistor 17 Lid Open Button
18 body side engaging portion 18a pawl portion 19 wall portion 19a standing portion 19b roof portion 19c descending portion 20 outer lid 21 operation panel 22 operation board 23 lid sensor 24 lid body side engaging portion , 24a claw portion, 25 inner lid stopper, 25a flat plate portion,
25b spring suppressing portion, 25c inner lid suppressing portion, 25d protruding portion, 26 spring, 27 support portion, 28 steam path space, 29 steam outlet, 30 inner lid, 31 first convex portion,
32 second convex portion, 100 rice cooker

Claims (5)

An inner pot with an opening at the top,
a main body that houses the inner pot;
an outer lid rotatably attached to the main body via a hinge;
an inner lid attached to the lower surface of the outer lid,
The inner pot has a bottom portion and a cylindrical outer peripheral portion continuous from the bottom portion,
The main body has a wall portion located outside the outer peripheral portion of the inner pot and below the upper end of the outer peripheral portion,
The outer lid has an inner lid stopper that protrudes toward the main body and has a different position depending on whether or not the inner pot is attached,
When the inner lid is not attached to the outer lid and the outer lid is rotated in the direction of closing the main body with reference to the open state, the inner lid stopper is positioned at the upper end of the outer peripheral portion of the inner hook. , and the inner lid stopper abuts against the upper surface of the wall portion to restrict the rotation of the outer lid. An inner pot with an opening at the top,
a main body that houses the inner pot;
an outer lid rotatably attached to the main body via a hinge;
an inner lid attached to the lower surface of the outer lid,
The inner pot has a bottom portion and a cylindrical outer peripheral portion continuous from the bottom portion,
The main body has a wall portion located outside the outer peripheral portion of the inner pot and below the upper end of the outer peripheral portion,
the outer lid has a spring and an inner lid stopper biased by the spring;
The position of the inner lid stopper differs depending on whether the inner pot is attached or not,
When the inner lid is not attached to the outer lid and the outer lid is rotated in the direction of closing the main body with reference to the open state, the inner lid stopper is positioned at the upper end of the outer peripheral portion of the inner hook. , and the inner lid stopper abuts against the upper surface of the wall portion to restrict the rotation of the outer lid. The inner lid stopper includes a flat plate portion, a spring restraining portion projecting upward from the flat plate portion, an inner lid restraining portion extending downward and forming a concave portion into which a part of the inner lid is inserted, and an inner lid restraining portion. 3. The rice cooker according to claim 1, further comprising a projecting portion extending obliquely downward from the portion. The outer periphery of the inner pot is composed of a cylindrical lower outer periphery continuous with the bottom, and an upper outer periphery stepped outward from the upper end of the lower outer periphery. 4. The rice cooker according to any one of claims 1 to 3, characterized in that the upper surface is rounded downwardly. 5. The rice cooker according to any one of claims 1 to 4, wherein the wall portion has an upright portion that extends vertically, and a roof portion that extends forward of the main body at the upper end of the upright portion.

Images