JP4062978B2 - Jar rice cooker - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a jar rice cooker having a lid that covers an upper surface of a rice cooker main body in which a pan is detachably stored.
[0002]
[Prior art]
Conventionally, this type of rice cooker has been configured as shown in FIG. Hereinafter, the configuration will be described.
[0003]
As shown in FIG. 14, the rice cooker main body 51 detachably houses a pot 52, and the pot 52 is induction-heated by a bottom induction coil 53 to perform rice cooking and heat insulation. The bottom induction coil 53 may heat the pan instead of the cast-in heater. The pan temperature sensor 54 detects the temperature of the pan 52 and sends a signal to the control unit 55. The control unit 55 controls the heating amount of the bottom induction coil 53 from the signal of the pan temperature sensor 54, and controls the temperature of the pan 52 at the time of rice cooking / warming.
[0004]
The upper part of the rice cooker main body 51 is pivotally supported by a hinge shaft 57 provided in the hinge part 56 at the rear of the rice cooker main body, and is covered with an openable / closable lid 58. The lid 58 is provided with a heating plate 59 that heats the internal space of the pan 52, and the heating plate 59 is induction-heated by the lid induction coil 60 to generate heat. Here, instead of the lid induction coil 60, a heating wire that generates heat by electrical resistance may be attached to the heating plate 59. The lid induction coil 60 is supplied with electric power from the control unit 55 and induction-heats the heating plate 59.
[0005]
As shown in FIG. 15, the lid 58 is always provided with an opening biasing force by a hinge spring 62 provided on the hinge portion 56, and the hook lever 60 provided on the front side of the rice cooker body 51 and the lid 58 a When the engagement is released, the lid body 58 is opened by 62 biasing force of the hinge spring. Here, as shown in FIG. 15, the convex part 58b is provided in the rear end of the cover body 58, and the convex part 58b is pinched by the groove part 61a of the hinge cover 61 which covers the rear part of the rice cooker main body 51 at the time of lid opening. Thus, it functions as a brake mechanism that weakens the impact when the hinge spring 62 is opened.
[0006]
[Problems to be solved by the invention]
However, in the above-described rice cooker, in order to increase the braking force of the brake mechanism that weakens the impact of opening the lid, the force that holds the convex portion 58b when opening is increased, or at a distance from the hinge shaft 57 even a little. Although it is necessary to configure a brake mechanism, the former requires high dimensional stability of the convex portion 28b and it is difficult to ensure durability such as wear resistance. Moreover, the latter needs to take the space behind the hinge axis | shaft 57 widely, and the installation area of the rice cooker main body 51 will become large. In addition, since the impact when the lid is opened is held by the hinge cover 61, the braking force of the brake is unstable because the brake mechanism is configured from the hinge shaft 57 via many parts.
[0007]
SUMMARY OF THE INVENTION The present invention solves the above-described conventional problems, and aims to construct a brake mechanism at the time of opening that is space-saving and stable and improves usability.
[0008]
[Means for Solving the Problems]
In order to achieve the above-mentioned object, the present invention detachably stores a pan in a rice cooker body, and a hinge part is provided on the rear side of the rice cooker body. The hinge shaft is attached to the hinge part and has a hinge spring. The upper surface of the rice cooker body is covered with a lid that is pivotally supported on the hinge, and a convex portion is provided directly above the hinge spring as the hinge portion . The convex portion faces the hinge portion of the lid body when the lid is opened. It is designed to be sandwiched between recesses provided on the surface.
[0009]
As a result, it is possible to configure a brake mechanism that can save space and stably absorb an impact when the lid is opened, and the usability can be improved.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Invention of Claim 1 of this invention is attached to the rice cooker main body, the pan detachably accommodated in the said rice cooker main body, the hinge part distribute | arranged to the back of the said rice cooker main body, and the said hinge part. And a lid that is pivotally supported by a hinge shaft having a hinge spring and covers the upper surface of the rice cooker body so as to be freely opened and closed, and is provided with a convex portion directly above the hinge spring in the hinge portion, It is designed to be held by a recess provided on the surface of the lid facing the hinge portion when the lid is opened, and constitutes a brake mechanism that can save space and stably absorb the impact when the lid is opened. Can improve usability.
[0011]
Invention of Claim 2 is attached to the rice cooker main body, the pan detachably accommodated in the rice cooker main body, the hinge part distribute | arranged to the back of the said rice cooker main body, and a hinge spring. and a lid for covering the axially supported by openably upper surface of the rice cooker main body hinge shaft having a convex portion is provided immediately above the hinge spring to a said hinge portion, the convex portion at the time of lid opening It is intended to be sandwiched between leaf springs provided on the surface facing the hinge part of the lid, and the weight of the lid is heavy, even if the hinge spring biasing force is large, space saving, And the brake mechanism which can absorb the impact at the time of lid opening stably can be comprised, and usability can be improved.
[0012]
The invention according to claim 3 comprises the convex part of the invention according to claim 1 or 2 as a separate member made of a material having higher wear resistance than the hinge part. The braking force of the brake mechanism can be adjusted according to the magnitude of the opening urging force, and various characteristics such as wear resistance and high frictional force of the brake mechanism can be provided.
[0013]
Invention of Claim 4 is attached to the rice cooker main body, the pan detachably accommodated in the rice cooker main body, the hinge part distribute | arranged to the back of the said rice cooker main body, and a hinge spring and a lid for covering the axially supported by openably upper surface of the rice cooker main body hinge shaft having a recess provided immediately above the hinge spring to a said hinge portion, the lid the recess when the lid opening The convex part provided on the surface facing the hinge part of the body is sandwiched, and it is possible to construct a brake mechanism that can absorb the shock when opening the lid with space saving and is easy to use. Can be improved.
[0014]
Invention of Claim 5 is attached to the rice cooker main body, the pan detachably accommodated in the rice cooker main body, the hinge part distribute | arranged to the back of the said rice cooker main body, and a hinge spring. and a lid for covering the axially supported by openably upper surface of the rice cooker main body hinge shaft having a recess provided immediately above the hinge spring to a said hinge portion, the lid the recess when the lid opening The leaf spring provided on the surface facing the hinge part of the body is sandwiched, and even if the lid body is heavy and the opening biasing force of the hinge spring is large, it saves space and opens the lid. A brake mechanism capable of stably absorbing the impact at the time can be configured, and usability can be improved.
[0015]
In the invention described in claim 6, the concave portion of the invention described in claim 4 or 5 is configured by another member made of a material having higher wear resistance than that of the hinge portion. The braking force of the brake mechanism can be adjusted according to the magnitude of the cover biasing force, and various characteristics such as wear resistance and high frictional force of the brake mechanism can be provided.
[0016]
【Example】
Embodiments of the present invention will be described below with reference to the drawings.
[0017]
Example 1
As shown in FIG. 1, the rice cooker main body 1 has a bottomed cylindrical pot storage portion 1a, and stores the pot 2 in a detachable manner. The pot 2 is induction-heated by the bottom induction coil 3 provided at the bottom of the pot storage part 1a, and rice cooking and heat insulation are performed. Note that the pot 2 may be heated with a cast heater instead of the induction heating system using the bottom induction coil 3, but the induction heating system can heat the pot with higher heating power and higher efficiency.
[0018]
The pan temperature sensor 4 detects the temperature of the pan 2 and sends a signal to the control unit 5. The control unit 5 controls the energization amount of the bottom induction coil 3 based on the signal of the pan temperature sensor 4, and controls the temperature of the pan 2 to an appropriate temperature at the time of cooking and keeping warm by changing the heating amount of the pan 2.
[0019]
The upper portion of the rice cooker main body 1 is covered with an openable / closable lid 8 that is pivotally supported by a hinge shaft 7 provided on the hinge 6 at the rear of the rice cooker main body 1.
[0020]
Steam generated from rice during cooking or heat retention adheres to the pan side of the lid 8, and when the lid 8 is opened, dew drops on the upper edge 1 b of the rice cooker body 1, or during the heat insulation It falls on the top and whitens the rice. Therefore, the lid 8 is provided with a heating plate 9 for heating the internal space of the pan 2. The heating plate 9 is heated by induction by the lid induction coil 10, and is exposed to the lid 8 during cooking and heat insulation. To prevent. Here, instead of the lid induction coil 10, there is also a method of sticking a heating wire that generates heat by electric resistance to the heating plate 9. However, the induction heating method can heat the heating plate 9 more efficiently. .
[0021]
The heating plate steam port 9a is provided in the heating plate 9, and the steam generated during rice cooking / warming passes through the heating plate steam port 9a and flows out from the lid steam port 8c to the outside. The steam port packing 11 prevents the steam from the heating plate steam port 9 a from flowing into the lid 8. Moreover, the pot packing 12 prevents the steam from leaking to the outside from between the heating plate 9 and the flange portion 2 a of the pot 2.
[0022]
Next, the opening / closing operation of the lid 8 will be described. A lid engaging portion 13 is provided at the distal end of the lid body 8 and engages with the hook button 14 in front of the rice cooker body 1 when the lid is closed to prevent the lid from being accidentally opened during rice cooking or heat insulation. The lid body 8 is always given an opening biasing force by the hinge spring 15. When the hook button 14 is pressed, the lid engaging portion 13 and the hook button 14 are disengaged, and the lid body 8 starts to open. Then, it pivots about the hinge shaft 7 and opens. Here, the opening biasing force by the hinge spring 15 becomes weaker as the lid 8 is opened, but is set slightly stronger so that the operation of the opening does not stop halfway.
[0023]
Here, as shown in FIG. 2, a convex portion 6a is provided at substantially the upper end of the hinge portion 6, while a concave portion 8b is disposed on a surface 8a of the lid body 8 facing the hinge portion 6 to open the lid. The convex portion 6a is held between the concave portions 8b. For this reason, the convex portion 6a and the concave portion 8b come into contact with each other before the opening of the lid, and the frictional force of the convex portion 6a and the concave portion 8b absorbs the urging force of the hinge spring 15, so that the lid body 8 is gently moved as shown in FIG. To stop.
[0024]
Thus, since the brake mechanism is comprised at the substantially upper end of the hinge part 6, it is not necessary to take a large space behind the rice cooker main body 1, and the area of the rice cooker main body 1 becomes small. Less installation area. In addition, if the friction force is the same, the braking force of the brake mechanism increases proportionally as the distance from the center of rotation increases, but according to the configuration of the present embodiment, the brake mechanism is configured at the substantially upper end of the hinge portion 6. As a result, the distance from the rotation center to the brake mechanism can be made longer than in the conventional configuration, and a large braking force can be obtained even with the same frictional force.
[0025]
In addition, the rice cooker body 1 and the lid 8 can constitute a brake mechanism via the hinge shaft 7, and the braking force of the brake mechanism is determined only by the dimensional relationship between the contact surfaces of the convex portions 6a and the concave portions 8b. The instability of the braking force of the brake due to the passage can be avoided, and a stable braking force of the brake can be obtained.
[0026]
(Example 2)
As shown in FIG. 4, the lid 18 is provided with a lid steam port 18 c that flows out steam generated during rice cooking and heat retention to the outside, and the operation of the display unit 16 that displays the operation state of the rice cooker and the operation of the rice cooker. An operation unit 17 to be operated is arranged. And the leaf | plate spring 19 is attached to the surface 18a facing the hinge part 6 of the cover body 18 as shown in FIG. Other configurations are the same as those of the first embodiment, and the same reference numerals are given and description thereof is omitted.
[0027]
The operation of the above configuration will be described. When the display unit 16 or the operation unit 17 is arranged on the top surface of the lid 18, the operability of the rice cooker is good and the operation state is easy to see, so that it is easy to use. However, since the lid 18 becomes heavy and the opening biasing force of the hinge spring 15 must be increased, it is necessary to increase the braking force of the brake.
[0028]
Here, in this embodiment, when the lid is opened, as shown in FIG. 6, the convex portion 6 a at the substantially upper end of the hinge portion 6 is held by the leaf spring 19. A greater frictional force can be obtained due to the spring property of the leaf spring 19, and a stable braking force can be obtained even if the leaf spring 19 has some size variation due to the flexibility of the leaf spring 19. Therefore, even if the lid 18 becomes heavy, a stable braking force can be obtained.
[0029]
Further, when the leaf spring 19 is made of a metal material, a higher braking force can be stably obtained, and in addition, durability such as wear resistance is good, and a stable braking force can be obtained over a long period of time. .
[0030]
(Example 3)
As shown in FIG. 7, the rice cooker main body 21 has a bottomed cylindrical pot storage portion 21a, and stores the pot 22 in a detachable manner. The pot 22 is induction-heated by the bottom induction coil 23 provided in the bottom part of the pot accommodating part 21a, and rice cooking and heat insulation are performed. Note that the pot 2 may be heated by a cast heater instead of the induction heating system using the bottom induction coil 23, but the pot can be heated with higher heating power and higher efficiency by the induction heating system.
[0031]
The pan temperature sensor 24 detects the temperature of the pan 22 and sends a signal to the control unit 25. The control unit 25 controls the energization amount of the bottom induction coil 23 from the signal of the pan temperature sensor 24, and controls the temperature of the pan 22 to an appropriate temperature when cooking and keeping warm by changing the heating amount of the pan 22.
[0032]
The upper portion of the rice cooker main body 21 is covered with an openable / closable lid 28 that is pivotally supported by a hinge shaft 27 provided on a hinge portion 26 at the rear of the rice cooker main body 21.
[0033]
Steam generated from the rice during cooking or heat retention adheres to the pan side of the lid body 28, and when the lid body 28 is opened, dew drops on the upper edge 1b of the rice cooker body 1 or during the heat insulation. It falls on the top and whitens the rice. Therefore, a heating plate 29 for heating the internal space of the pan 22 is provided on the lid body 28. The heating plate 29 is induction-heated by the lid induction coil 30 to generate heat, and is exposed to the lid body 28 during cooking and heat insulation. To prevent. Here, instead of the lid induction coil 30, there is a method in which a heating wire that generates heat by electric resistance is attached to the heating plate 29. However, the induction heating method can generate heat more efficiently than the induction heating method. .
[0034]
The heating plate 29 is provided with a heating plate steam port 29a, and steam generated during rice cooking / warming passes through the heating plate steam port 29a and flows out from the lid steam port 28c. The steam port packing 31 prevents the steam from the heating plate steam port 29 a from flowing into the lid body 28. Moreover, the pot packing 32 prevents the steam from leaking out from between the heating plate 29 and the flange portion 22a of the pot 22.
[0035]
Next, the opening / closing operation of the lid 28 will be described. A lid engaging portion 33 is provided at the tip of the lid body 28 and engages with the hook button 34 in front of the rice cooker body 21 when the lid is closed to prevent the lid from being accidentally opened during rice cooking or heat insulation. The lid 28 is always provided with an opening biasing force by the hinge spring 35. When the hook button 34 is pressed, the lid engaging portion 33 and the hook button 34 are disengaged, and the lid 28 starts to open. Then, it pivots about the hinge shaft 27 and opens. Here, the opening urging force by the hinge spring 35 becomes weaker as the lid body 28 is opened, but is set a little stronger so that the operation of the opening does not stop halfway.
[0036]
Here, as shown in FIG. 8, a concave portion 26a is provided at the substantially upper end of the hinge portion 26. On the other hand, a convex portion 28b is arranged on a surface 28a of the lid body 28 facing the hinge portion 26, and the lid portion 28 is opened. The concave portion 26a is held between the convex portions 28b. Therefore, the concave portion 26a and the convex portion 28b come into contact with each other before the opening of the lid, and the frictional force of the concave portion 26a and the convex portion 28b absorbs the urging force of the hinge spring 35. To stop.
[0037]
Thus, since the brake mechanism is comprised at the substantially upper end of the hinge part 26, it is not necessary to take a wide space behind the rice cooker main body 21, and the area of the rice cooker main body 21 becomes small. Less installation area. In addition, if the friction force is the same, the braking force of the brake mechanism increases proportionally as the distance from the rotation center increases. However, according to the configuration of the present embodiment, the brake mechanism is configured by the substantially upper end of the hinge portion 26. As a result, the distance from the rotation center to the brake mechanism can be made longer than in the conventional configuration, and a large braking force can be obtained even with the same frictional force.
[0038]
In addition, the rice cooker main body 21 and the lid body 28 can constitute a brake mechanism via the hinge shaft 27, and the braking force of the brake mechanism is determined only by the dimensional relationship between the contact surfaces of the concave portion 26a and the convex portion 28b. The instability of the braking force of the brake due to the passage can be avoided, and a stable braking force of the brake can be obtained.
[0039]
Example 4
As shown in FIG. 10, the lid body 38 is provided with a lid steam port 38 c through which steam generated during rice cooking and heat insulation flows out, and the operation of the rice cooker and the display unit 36 that displays the operation state of the rice cooker. An operation unit 37 to be operated is arranged. Then, as shown in FIG. 11, a leaf spring 39 is attached to a surface 38 a facing the hinge portion 26 of the lid 38. Other configurations are the same as those of the third embodiment, and the same reference numerals are given and the description thereof is omitted.
[0040]
The operation of the above configuration will be described. If the display part 36 or the operation part 37 is arranged on the top surface of the lid 38, the operability of the rice cooker is good and the operation state is easy to see, so it is easy to use. However, since the lid 38 becomes heavy and the opening biasing force of the hinge spring 35 must be increased, it is necessary to increase the braking force of the brake.
[0041]
Here, in this embodiment, when the lid is opened, the leaf spring 39 of the lid 38 is held by the recess 26a at the substantially upper end of the hinge portion 26 as shown in FIG. A greater frictional force can be obtained due to the spring property of the leaf spring 39, and a stable braking force can be obtained even if the leaf spring 39 has some variation due to the flexibility of the leaf spring 39. Therefore, a stable braking force can be obtained even when the lid 38 is heavy.
[0042]
Further, when the leaf spring 39 is made of a metal material, a higher braking force can be stably obtained, and in addition, durability such as wear resistance is good, and a stable braking force can be obtained over a long period of time. .
[0043]
(Example 5)
As shown in FIG. 13, the convex part 20 is comprised by the separate components at the substantially upper end of the hinge part 6. In FIG. Other configurations are the same as those of the first or second embodiment, and the same reference numerals are given and the description thereof is omitted.
[0044]
The operation of the above configuration will be described. The rice cooker main body 1 is shared in the development of the rice cooker, and the series of various models may be developed by changing the specifications of the lid 8 such as the thickness of the heating plate 9 and the size of the operation unit 16 and the display unit 17. is there. In this case, the weight of the lid body 8 changes, but the opening biasing force of the hinge spring 15 also changes depending on the weight of the lid body 8, and accordingly, the required braking force of the brake mechanism also changes. .
[0045]
Therefore, as in the present embodiment, the convex portion 20 at the substantially upper end of the hinge portion 6 is configured as a separate part, and only the convex portion 20 is changed according to the specifications of the lid body 8, whereby each lid body 8 is changed. In contrast, the optimum braking force can be obtained at a low cost.
[0046]
Further, the hinge portion 6 is often made of a resin material, but may deteriorate or wear due to long-term specifications, and the initial braking force of the brake mechanism may not be obtained. However, according to the present embodiment, since the convex portion 20 at the substantially upper end of the hinge portion 6 is configured as a separate part, the initial braking force can be recovered again only by replacing it with a new one.
[0047]
Furthermore, if the convex portion 20 is made of a material having higher wear resistance than the hinge portion 6, the performance of the brake mechanism will be longer, and if a material having a high frictional resistance is used, the braking force of the brake mechanism will be increased. The brake mechanism can have various characteristics.
[0048]
In the present embodiment, the convex portion 20 is provided at the substantially upper end of the hinge portion 6. However, the concave portion is also provided when the concave portion is provided at the substantially upper end of the hinge portion 26 as in the third or fourth embodiment. By using as a separate part, the same effect can be obtained.
[0049]
【The invention's effect】
As described above, according to the invention described in claim 1 of the present invention, the rice cooker body, the pan that is detachably stored in the rice cooker body, the hinge portion disposed behind the rice cooker body, and a lid covering the upper surface of the axially supported by openably the rice cooker body hinge shaft having a hinge spring with attached to the hinge portion, a convex portion immediately above the hinge spring to a said hinge portion Provided, and the convex part is held by a concave part provided on the surface facing the hinge part of the lid when the lid is opened, so that the brake can save space and stably absorb the impact when the lid is opened. A mechanism can be configured, and usability can be improved.
[0050]
Moreover, according to invention of Claim 2, the rice cooker main body, the pan accommodated in the said rice cooker main body so that attachment or detachment is possible, the hinge part distribute | arranged to the back of the said rice cooker main body, and attachment to the said hinge part together is supported by a hinge shaft having a hinge spring and a cover covering the openable and closable upper surface of the rice cooker body is, the convex portion is provided immediately above the hinge spring to a said hinge portion, the convex portion Is held by a leaf spring provided on the surface facing the hinge portion of the lid when the lid is opened. Therefore, even if the lid is heavy and the biasing force of the hinge spring is large, space saving is achieved. And the brake mechanism which can absorb the impact at the time of a lid opening stably can be comprised, and usability can be improved.
[0051]
According to the invention described in claim 3, since the convex portion is constituted by another member made of a material having higher wear resistance than that of the hinge portion, it depends on the weight of the lid body and the magnitude of the biasing force of the hinge spring for opening the lid. Thus, the braking force of the brake mechanism can be adjusted, and various characteristics such as wear resistance and high frictional force of the brake mechanism can be provided.
[0052]
Moreover, according to invention of Claim 4, it attaches to the rice cooker main body, the pan detachably accommodated in the rice cooker main body, the hinge part distribute | arranged to the back of the rice cooker main body, and the hinge part and a lid is supported by a hinge shaft having a hinge spring to cover the upper surface of the openable and closable the rice cooker main body with is, a the hinge portion a recess is provided immediately above the hinge spring, the recess opening Since the convex portion provided on the surface facing the hinge portion of the lid body is sandwiched at the time of the lid, it is possible to configure a brake mechanism that can save space and stably absorb the impact when the lid is opened. , Can improve usability.
[0053]
Moreover, according to invention of Claim 5, it attaches to the rice cooker main body, the pan accommodated in the said rice cooker main body so that attachment or detachment, the hinge part distribute | arranged to the back of the said rice cooker main body, and the said hinge part and a lid is supported by a hinge shaft having a hinge spring to cover the upper surface of the openable and closable the rice cooker main body with is, a the hinge portion a recess is provided immediately above the hinge spring, the recess opening Since the leaf spring provided on the surface facing the hinge portion of the lid body is clamped at the time of the lid, even if the weight of the lid body is heavy and the opening biasing force of the hinge spring is large, the space is saved, and A brake mechanism capable of stably absorbing an impact when the lid is opened can be configured, and usability can be improved.
[0054]
According to the invention described in claim 6, since the concave portion is made of another member made of a material having higher wear resistance than the hinge portion, it depends on the weight of the lid body and the magnitude of the opening biasing force of the hinge spring. It is possible to adjust the braking force of the brake mechanism and to give various characteristics such as wear resistance and high frictional force of the brake mechanism.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of a rice cooker according to a first embodiment of the present invention. FIG. 2 is an exploded perspective view of the vicinity of the hinge portion of the rice cooker. Cutaway perspective view [Fig. 4] Cross-sectional view of a rice cooker according to a second embodiment of the present invention [Fig. 5] Disassembled perspective view of the vicinity of the hinge portion of the rice cooker [Fig. 6] Hinge when the rice cooker is opened FIG. 7 is a sectional view of a rice cooker according to a third embodiment of the present invention. FIG. 8 is an exploded perspective view of the vicinity of the hinge portion of the rice cooker. FIG. 10 is a partially cutaway perspective view of the vicinity of the hinge at the time of the lid. FIG. 10 is a sectional view of the rice cooker according to the fourth embodiment of the present invention. FIG. 13 is a partially cutaway perspective view of the vicinity of the hinge when the rice cooker is opened. FIG. 13 is an exploded perspective view of the vicinity of the hinge of the rice cooker of the fifth embodiment of the present invention. Exploded perspective view of the hinge portion near the cross-sectional view [FIG. 15] the cooker EXPLANATION OF REFERENCE NUMERALS
DESCRIPTION OF SYMBOLS 1 Rice cooker main body 2 Pan 6 Hinge part 6a Convex part

Claims (6)

A rice cooker body, a pan that is detachably housed in the rice cooker body, a hinge portion disposed behind the rice cooker body, and a hinge shaft that is attached to the hinge portion and has a hinge spring. openably and a lid covering an upper surface of the rice cooker main body, a said hinge portion a convex portion is provided immediately above the hinge spring, the convex portion is opposed to the hinge portion of the lid when the lid opening A jar rice cooker that is sandwiched between recesses on the surface. A rice cooker body, a pan that is detachably housed in the rice cooker body, a hinge portion disposed behind the rice cooker body, and a hinge shaft that is attached to the hinge portion and has a hinge spring. openably and a lid covering an upper surface of the rice cooker main body, a said hinge portion a convex portion is provided immediately above the hinge spring, the convex portion is opposed to the hinge portion of the lid when the lid opening A jar rice cooker that is held between leaf springs on the surface.   The jar rice cooker according to claim 1 or 2, wherein the convex portion is constituted by another member made of a material having higher wear resistance than the hinge portion. A rice cooker body, a pan that is detachably housed in the rice cooker body, a hinge portion disposed behind the rice cooker body, and a hinge shaft that is attached to the hinge portion and has a hinge spring. and a lid openably cover the upper surface of the rice cooker main body, a said hinge recesses provided immediately above the hinge spring, the recess in the hinge portion and the opposed surface of the lid when the lid opening A jar rice cooker designed to hold the convex part provided. A rice cooker body, a pan that is detachably housed in the rice cooker body, a hinge portion disposed behind the rice cooker body, and a hinge shaft that is attached to the hinge portion and has a hinge spring. and a lid openably cover the upper surface of the rice cooker main body, a said hinge recesses provided immediately above the hinge spring, the recess in the hinge portion and the opposed surface of the lid when the lid opening A jar rice cooker designed to pinch the provided leaf spring.   The jar rice cooker according to claim 4 or 5, wherein the concave portion is made of another member made of a material having higher wear resistance than the hinge portion.

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