JPH0540834Y2 - - Google Patents

Description

[Detailed explanation of the invention] <Industrial application field> This invention relates to an electric rice cooker, and more specifically, it is improved so that it is easy to put in and take out the rice cooker, and it is easy to move when putting rice out of the rice cooker. This relates to an electric rice cooker.

<Prior Art> Conventionally, electric rice cookers have been equipped with an outer case, an inner container provided inside the outer case, and a shoulder member connected to the upper edge of the outer case and the upper edge of the inner container. ing. A rice bowl is removably housed in the inner container. In such a configuration, when the rice bowl was stored in the inner container, the rice bowl was sometimes stored in an eccentric position within the inner container. If the rice bowl is eccentric in the inner container, the rice cooker installed at the bottom of the inner container or the heat-retaining heater installed on the side of the inner container may not be able to heat the rice bowl evenly, making it difficult to cook delicious rice. There were problems such as not being able to cook food or keeping it warm evenly.

Therefore, for example, an electric rice cooker disclosed in Japanese Utility Model Application Publication No. 60-116922 discloses a configuration in which a shoulder member is provided with a spacer protruding from it for guiding the rice bowl to the center of the inner container. That is, a protruding strip that protrudes toward the center is provided on the inner circumferential surface side of the shoulder member connected to the upper edge of the inner container. When storing the rice bowl in the inner container, the outer surface of the rice bowl is guided along this protrusion, so that the rice bowl can be correctly stored at a predetermined center position of the inner container.

<Problem to be solved by the invention> The protrusion provided on the shoulder member proposed in the above-mentioned prior art is intended to facilitate the accommodation of the rice bowl in the inner container. Since the part is in contact with the outer circumferential surface of the rice bowl, if the protruding part expands or the rice bowl expands due to temperature changes during rice cooking,
Alternatively, if the outer shape of the rice bowl deforms even slightly due to use, there are drawbacks such as when the rice bowl is stored in the inner container, the rice bowl gets caught on the ridges and becomes difficult to take in and out. .

Additionally, when trying to serve rice when the rice in the rice bowl is running low, the rice bowl rotates within the inner container and is difficult to serve. The issue remained unresolved.

Therefore, the object of this invention is to provide an electric rice cooker that allows the rice to be taken in and out of the inner container easily, and in which the rice is not rotated within the inner container and the rice can be easily poured into the rice cooker. purpose.

<Means for Solving the Problems> This invention for solving the above problems consists of an exterior case forming an exterior body, an inner container provided inside the exterior case and removably housing a rice bowl, and an exterior case. connected to the upper edge and the upper edge of the inner container;
In an electric rice cooker having a shoulder member forming a shoulder, the inner circumferential surface of the shoulder member is arranged to face the outer circumferential surface of the rice cooker, and the inner circumferential surface of the shoulder member is provided at an appropriate interval. , a plurality of protrusions are formed toward the center in the radial direction, and a plurality of protrusions are formed on the inner circumferential surface of the shoulder member at a position facing the inner circumferential surface of the shoulder member on the outer circumferential surface of the rice bowl. It is characterized in that at least one or more protrusions are formed that engage with at least one of the individual protrusions.

In addition, in this invention, the plurality of protrusions formed on the inner peripheral surface of the shoulder member have a height that creates a gap between them and the outer peripheral surface of the rice bowl when the rice bowl is stored in the inner container. It is said to be a protrusion.

<Function> According to this invention, when storing the rice bowl in the inner container, the plurality of protrusions formed on the inner peripheral surface of the shoulder member guide the rice bowl so that it can be smoothly stored in the inner container. . In addition, after the rice bowl is stored in the inner container,
When the rice bowl attempts to rotate, the projection formed on the outer peripheral surface of the rice bowl and the projection formed on the inner peripheral surface of the shoulder member engage with each other, so that the engagement does not rotate. Therefore, even if rotational force is applied to the rice bowl when serving rice, the rice bowl does not rotate within the inner container, making it easy to serve the rice.

<Example> Hereinafter, an electric rice cooker according to an example of the present invention will be described with reference to the drawings.

As shown in FIGS. 1 and 2, the electric rice cooker of this embodiment includes a substantially cylindrical rice cooker main body B that accommodates a rice cooker A, and a substantially cylindrical rice cooker main body B that is attached to the rice cooker main body B so as to be openable and closable. A disc-shaped outer cover C and this outer cover C
It has an inner lid D for closing the rice cooker A, which is attached to the surface facing the rice cooker main body B. In addition, the outer lid C is pivotally supported on the rice cooker main body B via a support shaft S at one location on the outer peripheral edge so as to be freely openable and closable. A locking means R formed on the opposite side allows it to be locked to the rice bowl main body B in the closed state.

The rice cooker body B includes a bottomed cylindrical inner container 1 that removably accommodates the rice cooker A, an annular synthetic resin shoulder member 2 attached to the mouth edge of the inner container 1, and a shoulder member 2 made of synthetic resin. A cylindrical exterior case 3 whose upper end is fixed to the lower surface of the outer peripheral part of the shoulder member 2;
and a bottom member 4 made of synthetic resin that supports it from below.

A heat insulating material 50 is provided in the space between the inner container 1 and the outer case 3 to prevent heat radiation from the rice container A.

Further, a control section E for driving the electric rice cooker is disposed in a space within the outer case 3 from the portion on the side of the locking means R to below the bottom of the inner container 1.

The control section E includes a control panel E1 having an operating section exposed on the outer peripheral surface of the outer case 3, a micro switch E2 for turning on and off the rice cooking heater 71, which will be described later, and the operation of the control panel E1, as well as the control panel E1, which will be described later. A switch lever E3 is provided which operates the micro switch E2 by the operation of the center sensor 6. Also, behind the control panel E1, due to heat radiation from the rice cooker A, the control panel E1
In order to prevent the switches, circuit boards, etc. attached to the inner container 1 from being damaged, a circuit board cover E4 and a heat insulating material 52 are interposed between the inner container 1 and the inner container 1.

On the surface of the board cover E4 facing the inner container 1, a heat insulating material 52 is provided to protrude toward the inner container 1 in order to prevent it from shifting downward and interfering with the operation of the switch lever E3. A rib E5 is formed integrally with the substrate cover E4.

A recess 11 is formed in the center of the bottom surface of the inner container 1, and a center sensor 6 is housed in the recess 11 for contacting the center of the bottom surface of the rice bowl A and detecting the temperature of the rice bowl A. ing.

Further, on the top surface of the bottom of the inner container 1, an annular heating plate 7 on which the rice bowl A is placed, in which an annular rice cooking heater 71 that directly heats the rice bowl A is embedded, surrounds the center sensor 6. It is set in.

Further, an annular side heat-retaining heater Q is provided on the outer peripheral surface of the inner container 1.

As shown in FIG. 3b, the inner container 1 has bayonet claws 12 at three locations on its mouth edge for fixing the inner container 1 and the shoulder member 2, extending outward in the radial direction. It has been extended. Each bayonet pawl 12 has a fourth
As shown in Figure b, the tip 12a is bent downward. Further, on the mouth edge of the inner container 1, adjacent to one bayonet claw 12, a bendable locking claw 13 is protruded to prevent rotation to a shoulder member 2, which will be described later.

The shoulder member 2 has an outer circumferential surface 20a of the outer circumferential edge portion 20,
The inner circumferential surface 21a of the inner circumferential edge portion 21 is formed into an annular shape that is substantially flush with the outer circumferential surface 3a of the outer case 3, and the inner circumferential surface 21a of the inner circumferential edge portion 21 is substantially flush with the inner circumferential surface 1a of the inner container 1.

On the upper surface 2a of the shoulder member 2, a shaft support 221 rotatably supports a support shaft S fixed to the outer cover 8 of the outer lid C, and a locking pawl R1 that is a part of the locking means R. They are formed in symmetrical positions with the center of the circle in between.

Further, the lower surface 2b of the shoulder member 2 is engaged with a folded portion 31 provided at the upper end of the outer case 3 inwardly near the outer peripheral edge 20 to fix the shoulder member 2 and the outer case 3. A plurality of engaging claws 23 for...
are arranged in a ring, as shown in FIG. 3a.

The lower surface 2b of the shoulder member 2, near the inner circumferential edge 21, engages with three bayonet claws 12 formed on the mouth edge of the inner container 1 to move the shoulder member 2 into the inner container 1. Three bayonet receivers 24 for fixing to the mouth edge are formed.

Each bayonet receiver 24 is shown in FIG.
Also, as shown in FIGS. 4a and 4b, a lower surface 2b of the shoulder member 2 that comes into contact with the mouth edge of the inner container 1 from above;
An annular vertical flange 24a having an inner diameter slightly larger than the maximum outer diameter of the bayonet claws 12, which protrudes downward from the lower surface 2b of the shoulder member 2;
An inner flange 24 extends radially inward from three locations at the lower end of the vertical flange 24a and receives the tip 12a folded back downward of the bayonet pawl 12.
b, and a stopper 24d that reaches from one end of the inner flange portion 24b to the lower surface 2b of the shoulder member 2.

Further, the tip of the inner flange 24b engages with the tip 12a of the bayonet claw 12 from the inside in the radial direction, so that when the electric rice cooker receives an impact such as being dropped, the bayonet claw 12 is engaged in the radial direction. A rib 24c for preventing the bayonet from moving inward and coming off the bayonet receiver 24 is provided to protrude upward.

Each bayonet receiver 24...
When the bayonet claw 12... is engaged with the inner container 1, the locking claw 13 is bent and fitted into the position where the locking claw 13 of the inner container 1 faces.
A notch 25 is formed as a locking recess for preventing the shoulder member 2 from rotating.

The above bayonet receiver 24... and bayonet pawl 1
2... The fixation of the shoulder member 2 and the inner container 1 by engagement with the inner container 1 is carried out as follows.

First, the bayonet claws 12 of the inner container 1 are inserted into the vertical flange 24a from the part of the shoulder member 2 where the inner flange 24b is not formed, and the inner container 1 is inserted into the vertical flange 24a.
The edge of the shoulder member 2 is brought into contact with the lower surface 2b of the shoulder member 2.

Next, by relatively rotating the inner container 1 and the shoulder member 2, each bayonet pawl 12...
4...Insert inside.

Then, when the tips of the bayonet claws 12 come into contact with the stopper 24d, the relative rotation between the inner container 1 and the shoulder member 2 is stopped.

Finally, when the locking claw 13 of the inner container 1 is bent outward and fitted into the notch 25, the inner container 1 and the shoulder member 2 are prevented from rotating, and the shoulder member 2 and the inner container 1 are prevented from rotating. is fixed.

Inner peripheral surface 21a of the inner peripheral edge portion 21 of the shoulder member 2
is provided with a protrusion 22 that suppresses the eccentricity of the rice bowl A. As shown in FIG. 3a, the protrusion 22 is
They are provided at equal intervals along the circumferential direction and protrude toward the center in the radial direction.

As shown in FIGS. 1 and 4a, each protrusion 22 has a radial thickness that is equal to or smaller than the inner circumferential surface 21 of the inner circumferential edge portion 21 so as to create a gap between the protrusions 22 and the outer circumferential surface of the rice bowl A.
The distance between a and the outer peripheral surface of the rice bowl A is set to be slightly smaller. This gap may be caused by dimensional errors in the shoulder member 2, rice bowl A, etc., differences in expansion/contraction rates during cooking, etc., making it impossible to insert or remove the rice bowl A, or causing the rice bowl A to become deformed due to tightening. It is provided to prevent this from happening.

In addition, each protrusion 22 is arranged so as to make it easier to accommodate the rice bowl A in the inner container 1 as shown in FIG. 4a.
As shown in FIG. 5a, it is preferable to form a substantially triangular shape with rounded apexes facing upward.

Furthermore, in order to make it easier to accommodate the rice bowl A in the inner container 1, the surface of each protrusion 22 facing the rice bowl A may be an inclined surface 22a, as shown in FIG. 6b.

On the other hand, a protrusion A1 is formed on the outer peripheral surface of the rice bowl A at a position that faces the inner peripheral surface of the shoulder member 2 when the rice bowl A is accommodated in the inner container 1. As shown in FIG. 5b, the protrusion A1 formed on the rice bowl A is formed by doweling a part of the side plate of the rice bowl A.
It is formed by protruding outward in the radial direction. This protrusion A1, as shown in FIG. 6a,
When the rice bowl A is housed in the inner container 1, the shoulder member 2
This is provided to prevent the rice bowl A from rotating within the inner container 1 by engaging with any one of the plurality of projections 22 formed on the inner circumferential surface of the inner container 1 . Therefore, even if rotational force is applied to the rice bowl A when serving rice, etc., the rice bowl A is prevented from spinning idly within the inner container 1.

In addition, when the configuration of the shoulder member 2 includes a holding ring T as shown in FIG. 5c, the inner peripheral surface of the shoulder member becomes the inner peripheral surface T1 of this ring T, A plurality of protrusions 22 may be formed on the surface T1.

The outer cover C is formed into a hollow structure by an outer cover 8 made of synthetic resin provided on the outer surface side and a back plate 9 made of synthetic resin provided on the inner surface side, and the outer cover 8 and the back plate are A heat insulating material 51 is housed in the space between the two.

A one-touch pin 91 is protruded from the center of the lower surface of the back plate 9 for detachably attaching the inner cover D for closing the rice bowl A to the outer cover C. The one-touch pin 91 has a cylindrical base 91a and a disk-shaped large diameter portion 91b provided at the tip of the base 91a.
It is formed in a substantially T-shaped cross section.

On the other hand, in the inner cover D, an inner cover stopper rubber F, which is removably engaged with the one-touch pin 91, is fitted into a through hole D1 formed in the center. The inner lid stopper rubber F is formed at the receiving recess F1 that receives the large diameter portion 91b of the one-touch pin 91, and at the entrance of this receiving recess F1, with the inner diameter of the entrance being smaller than the outer diameter of the large diameter portion 91b. , the large diameter portion 9
It is provided with an inner flange part F2 that restricts the passage of 1b.

The inner lid D has a large diameter portion 9 of the one-touch pin 91.
1a is attached to the lower surface of the back plate 9 by press-fitting it into the receiving recess F1 against the passage blocking force of the inner flange F2 of the inner lid stopper rubber F. Further, the inner lid D has a large diameter portion 91 of the one-touch pin 91.
a is removed from the back plate 9 by taking it out from the receiving recess F1 against the passage-preventing force of the inner flange F2 of the inner lid stopper rubber F.

A female screw 92 is formed inside the one-touch pin 91 on the top surface of the back plate 9, and a screw N1 screwed into the female screw 92 prevents deformation of the back plate 9 from occurring on the top surface of the back plate 9. A reinforcing metal fitting G for preventing this is screwed.

As shown in FIG. 7, the reinforcing metal fitting G is made of a long channel material with a substantially U-shaped cross section, and has a female thread G1 in the center in the longitudinal direction through which the screw N1 is inserted.
It is equipped with

As shown in FIGS. 1 and 2, the reinforcing metal fitting G has its longitudinal direction aligned with the support shaft S and the locking means R.
It is attached to the back plate 9 along a direction perpendicular to the line connecting the two. This is the outer cover C above.
In this case, deformation such as warping is more likely to occur in the direction perpendicular to this line than in the line connecting the support shaft S and the locking means R, which are fixed to the main body B of the apparatus during cooking, where thermal deformation is likely to occur. It is. Note that the reinforcing metal fitting G may be formed in a cross shape extending both in a line connecting the support shaft S and the locking means R and in a direction orthogonal to this line.

Further, in the vicinity of both ends of the reinforcing metal fitting G, among a plurality of protrusions 93 protruding from the upper surface of the back plate 9, there are protrusions 93 on a line perpendicular to the line connecting the support shaft S and the locking means R mentioned above. Two protrusions 93, 93 located at
Through holes G2, G2 are formed to engage with the reinforcing metal fittings G to prevent rotation of the reinforcing metal fittings G when and after fixing the reinforcing metal fittings G to the upper surface of the back plate 9. Inside the plurality of projections 93, there are a plurality of female screws 94 for screwing the gasket P that seals between the back plate 9 and the rice bowl A to the lower surface of the back plate 9.
...is being formed.

The packing P is integrally formed entirely of an elastic material such as rubber, and includes an annular fixing part P1 and an annular seal part P2 extending downward from the outer peripheral edge of the fixing part P1. It is equipped with

The packing P has the fixing part P1 sandwiched between the lower surface of the back plate 9 and the packing holding plate H made of synthetic resin, and the packing holding plate H is screwed into the female screw 94 described above. It is fixed to the lower surface of the back plate 9 by fixing it with a plurality of screws N2... attached thereto. As shown in FIGS. 1 and 2, when the outer lid C is closed on the rice cooker main body B, the seal portion P2 is brought into pressure contact with the mouth edge of the rice cooker A. It is used to seal between the outer cover C and the outer cover C.

Note that the above-mentioned gasket P can also be fixed to the back plate 9 using the structure shown in FIG.

That is, in the structure shown in the figure, an engaging protrusion H3 protruding upward is provided at the position of the through hole of the seal holding plate H through which the screw N2 is inserted, in place of the through hole. Furthermore, an engagement hole 97 into which the engagement projection H3 is engaged is formed through the projection 93 of the back plate 9, which also serves to prevent the reinforcing metal fitting G from rotating. Then, as shown in the figure, when the engagement protrusion H3 is fitted into the engagement hole 97 with the seal P sandwiched between the seal presser plate H and the back plate 9, the seal P is inserted into the engagement hole 97. It is fixed to the back plate 9.

As shown in FIG. 1, a pressure regulating port J is formed in a portion of the outer cover C on the side of the support shaft S, as shown in FIG.

The pressure regulating port J is provided in a protruding manner on the upper surface of the back plate 9, and its tip portion having a large number of through holes 95a passes through the through holes 81 of the outer cover 8 and connects to the cylindrical body 95 exposed to the outside of the outer cover C. It is structured accordingly. Symbol L in Figure 1
seals between the outer cover 8 and the cylindrical body 95,
A seal ring for sealing the inside of the hollow outer lid C is shown. Since the pressure regulating port J is formed to overlap the packing P and the packing holding plate H, through holes H1 and P3 are provided in both of them, respectively, so as not to block the pressure regulating port J. ing. Further, an annular groove H2 is formed on the outer side of the upper surface of the through hole H1 to receive an outer peripheral edge of a flange K3 of a pressure regulating means K, which will be described later.

Further, a pressure regulating means K is inserted into the cylindrical body 95 to prevent sticky liquid from boiling over outside the outer lid C and to improve the heat retention performance of the rice cooker.

The pressure regulating means K is entirely made of a soft synthetic resin material, and as shown in FIG. Six ribs K2 protrude outward in the radial direction from the ribs K2, the tips of which abut against the inner wall surface of the pressure regulating port J...
..., and a flange part K3 having an outer diameter larger than the inner diameter of the pressure regulating port J, which is provided at the lower end of the small cylinder part K1. Also, each rib K2 of the flange K3...
A through hole K4... is formed at a position between them.

The pressure regulating means K is constructed by fixing the gasket press plate H to the lower surface of the back plate 9 while inserting the small cylinder part K1 having the ribs K2 into the pressure regulating port J from the lower surface side of the inner lid 9. As shown in FIG. 1, the outer peripheral edge of the flange K3 is protruded around the pressure regulating port J on the lower surface of the back plate 9 while being received in the groove H2 of the packing holding plate H1. It is sandwiched between the annular rib 96 and the packing holding plate H, and is fixed in the pressure regulating port J.

Note that as the pressure regulating means K, one having a cross-sectional shape as shown in FIG. 10a can also be used. The pressure regulating means K has a flange K whose outer peripheral edge is received in the groove H2 of the packing holding plate H1.
5, a protrusion K6 projecting upward from the center of the flange K5, and a plurality of through holes K7 formed around the protrusion K6 of the flange K5.

In addition, as shown in Figure 10b, Patsukin P
The pressure regulating means K may be omitted by providing a plurality of pressure regulating small holes P4... in the portion facing the pressure regulating port J.

Furthermore, in place of the small hole P4 for pressure regulation mentioned above,
A cross-shaped cut P5 as shown in FIG. 11a may be formed in the portion of the gasket P facing the pressure regulating port J. The incision P is normally closed and is only pushed open by powerful steam.
Therefore, it is possible to prevent bubbles from forming inside the pressure regulating port J and to prevent boiling over. Moreover, since the above-mentioned cut P is completely closed during heat retention, the heat retention performance of the rice cooker can be improved.

In addition, as shown in FIG. 11b, a cross-shaped cut M1 is provided in the member M, which is a separate part from the packing P.
This member M may be attached to the pressure regulating port J in the same manner as the pressure regulating means K described above.

As shown in FIG. 1, the locking means R for locking the outer lid C is rotatably attached to the locking pawl R1 formed on the upper surface of the shoulder member 2 and the outer cover 8 of the outer lid C. A lever member R3 having an engaging claw R2 that engages with the locking claw R1, and this lever member R3.
is composed of a coil spring R4 that rotates and presses in the direction of engagement between the locking pawl R1 and the engaging pawl R2.

To release the locking of the outer cover C by the locking means R, press the pressed portion R5 provided on the upper surface of the lever member R3, and rotate the lever member R3 against the pressing force of the coil spring R4. The engagement between the locking pawl R1 and the engaging pawl R2 may be released by moving the locking pawl R1 and the engaging pawl R2.

In the electric rice cooker according to this embodiment, a plurality of protrusions 22 formed on the inner circumferential surface 21a of the shoulder member 2
serves as a guide member when storing the rice bowl A in the inner container 1, so that the rice bowl A can be correctly and smoothly stored in the inner container 1. In addition, the rice bowl A does not become largely eccentric within the inner container 1.

Moreover, when the rice bowl A is stored in the inner container 1,
Any one of the plurality of protrusions 22 formed on the inner circumferential surface 21a of the shoulder member 2 engages with the protrusion A1 formed on the outer circumferential surface of A, and the rice bowl A rotates within the inner container 1. is prevented. Therefore, when rice is being served from rice bowl A, rice bowl A does not run idle, and even if the rice in rice bowl A is running low, the rice can be served well.

In addition, in the said Example, although the example which provided the six protrusions 22 on the inner peripheral surface 21a of the shoulder member 2 was shown, the number of protrusions is not limited to six, It just needs to be plural.

On the other hand, the protrusion A1 formed on the rice bowl A is the shoulder member 2.
The number of protrusions 22 may be equal to the number of protrusions 22 formed therein, or there may be only one protrusion. Protrusion A of rice bowl A
Even if there is only one rice bowl A, the protrusion A1 of the rice bowl A accommodated in the inner container 1 engages with one of the protrusions 22 of the shoulder member 2, and rotation is prevented.

In addition, various design changes can be made without changing the gist of the invention.

<Effects of the invention> Since this invention is constructed as described above, it is possible to smoothly insert and remove the rice bowl into the inner container.
Moreover, it is possible to provide an electric rice cooker in which the rice cooker does not rotate within the inner container when pouring rice from the rice bowl housed in the inner container, making it easier to pour the rice, and improving operability. .

In addition, in the electric rice cooker of this invention, a plurality of protrusions are formed on the inner peripheral surface of the shoulder member, so when the rice cooker is stored in the inner container, the plurality of protrusions guide the rice cooker correctly. , the rice bowl can be smoothly accommodated in the inner container. Therefore, it is possible to provide an electric rice cooker that allows easy loading and unloading of the rice cooker and is easy to handle.

[Brief explanation of drawings]

Fig. 1 is a longitudinal sectional view showing an electric rice cooker as an embodiment of this invention, Fig. 2 is a longitudinal sectional view of the electric rice cooker of the above embodiment in a direction perpendicular to Fig. 1, and Fig. 3a is A bottom view of the shoulder member in the above embodiment, FIG. 3b is an end view showing the mouth edge of the inner container in the above embodiment, and FIG. 4a is an enlarged perspective view of the bayonet receiver formed in the shoulder member. Fig. 4b is a sectional view showing the structure of the fixed part between the shoulder member and the inner container, and Fig. 5a
is an enlarged perspective view of a protrusion formed on the inner circumferential surface of the shoulder member, FIG. 5b is an enlarged perspective view of a part of the rice bowl,
Fig. 5c is a perspective view showing a modified example of the shoulder member, Fig. 6a is a sectional view showing the engagement state between the protrusion of the shoulder member and the protrusion of the rice bowl, and Fig. 6b shows a modified example of the protrusion. FIG. 7 is a side view, FIG. 7 is a perspective view showing reinforcing metal fittings used for reinforcing the back plate of the outer lid, FIG. The figure is a sectional view showing a modified example of the structure for attaching the packing to the back plate, FIGS. 10a and 10b are sectional views showing another example of the pressure regulating means, and FIG.
FIG. 11(a) is a plan view showing a notch in the packing instead of the pressure regulating means, and FIG. 11(b) is a plan view showing a member in which the notch is formed. A...Rice bowl, A1...Protrusion, 1...Inner container, 2
... Shoulder member, 21a ... Inner peripheral surface, 22 ... Protrusion,
T...Ring, T1...Inner peripheral surface.

Claims (1)

[Claims for Utility Model Registration] 1. An exterior case forming an exterior body, an inner container provided within the exterior case that removably accommodates a rice bowl, the upper edge of the outer case and the upper edge of the inner container. In the electric rice cooker, the inner peripheral surface of the shoulder member is opposed to the outer peripheral surface of the rice cooker, and the inner peripheral surface of the shoulder member is provided with a suitable material. A plurality of protrusions are formed toward the center in the radial direction at equal intervals, and the inner circumferential surface of the shoulder member is formed at a position facing the inner circumferential surface of the shoulder member on the outer circumferential surface of the rice bowl. An electric rice cooker characterized in that at least one protrusion is formed to engage with at least one of the plurality of protrusions formed in the electric rice cooker. 2. In the electric rice cooker according to claim 1, each of the plurality of protrusions formed on the inner circumferential surface of the shoulder member has a gap between the plurality of protrusions and the outer circumferential surface of the rice cooker when the rice cooker is housed in the inner container. Electric rice cookers are said to have a protrusion that is high enough to create a gap.