JP4003967B2 - rice cooker - Google Patents

Description

  The present invention relates to a rice cooker that covers an upper surface of a rice cooker body in a freely openable / closable manner with a lid pivotally supported on a back portion, and is an invention related to a structure of a rice cooker body and a lid mounting portion.

  The rice cooker contains a kettle inside the main body, and a lid that covers the upper surface of the rice cooker main body or an inner lid or a heat sink set attached to the lid is provided with a sealing means in close contact with the upper end opening of the kettle, and the kettle is sealed. Cooked rice can be cooked. The lid that can be freely opened and closed on the rice cooker body consists of a lid ring that forms the bottom surface of the lid and a lid cover that covers the top surface of the lid ring. Depending on the steam path and the model in the space between the lid ring and the lid cover, The equipment of the display part and operation part is arranged.

In the conventional rice cooker, as disclosed in Patent Literature 1 and Patent Literature 2, the lid A is placed on the side wall of the rice cooker main body B with the lid A closed, and the lid A as shown in FIG. And the rice cooker main body B side is designed as a continuous surface. And the outer casing D part formed in the upper end of the pot C accommodated in the inside of the rice cooker main body B is made to project upward from the side wall upper end E of the rice cooker main body B, and is higher than the upper end of the side wall E of the rice cooker main body B. The outer hook D portion of the hook C protruded to the bottom of the lid A is brought into contact with the sealing means arranged on the bottom surface of the lid A. Moreover, as shown in FIG. 11, the plane shape of the rice cooker body B is sufficiently larger than the lateral width of the pot C, and the pot of the pot is between the side wall of the rice cooker body B and the outer casing D at the upper end of the pot C. Sufficient distance F that allows fingers to enter during detachment is maintained. Depending on the model, as shown in FIG. 12, a handle G is attached to the side wall of the pot C, and this handle G protrudes from the notch J formed on the side wall of the rice cooker main body B to attach and detach the pot C. The kettle is designed to be easy to handle.
Japanese Patent Laid-Open No. 5-130934 JP-A-8-205995

  In the conventional rice cooker, since the side wall E and the lid A of the vertical rice cooker main body B are formed on a continuous surface, the thickness of the lid A inevitably increases and the total height H of the rice cooker increases. Yes. Moreover, since the breadth W of the rice cooker main body B forms the comparatively big clearance gap F between the left-right both sides of the pot C, and the side wall E inner surface of the rice cooker main body B, the width W of the rice cooker main body A whole is also It was a big one. In addition, a relatively large space is formed on the outer periphery of the upper end of the pot C inside the rice cooker body B, and since the lid and the rice cooker body B are difficult to come into close contact with each other, heat is easily escaped, which is always preferable from the viewpoint of thermal efficiency. It was not a thing. In particular, in the case where the handle G attached to the pot C is exposed to the outside from the notch J of the rice cooker main body B side wall E, a gap is formed around the handle G, so that there is a problem that heat release becomes larger. .

  In recent years, rice cookers with a more compact and innovative design have been required. However, in the conventional rice cooker, the overall size of the rice cooker body is limited with respect to the size of the pot, and there is a limit to downsizing. In view of such circumstances, an object of the present invention is to provide a rice cooker that can realize a more compact and innovative design, has a small amount of heat dissipation, and is excellent in thermal efficiency.

The present invention relates to a rice cooker that pivotally supports a lid 3 on the back of a rice cooker body 1 and covers the upper surface of the rice cooker body 1 so as to be freely opened and closed.
According to the first aspect of the present invention, the upper end opening of the pot 2 accommodated in the rice cooker body 1 is positioned below the upper end of the rice cooker body. On the upper surface of the rice cooker body 1, a recess 7 into which the lid is fitted is formed. On the outer periphery of the lid 3 to be fitted into the recess 7 in the rice cooker body 1, an outer hook-like engagement portion 25 is formed. The engaging portion 25 is supported on the upper end of the side wall of the rice cooker body 1.
The lid 3 includes a lid body 10 that forms the upper surface of the lid 3, and a lid ring 9 that is attached to the lid body 10 and forms the bottom surface of the lid 3. The lid ring 9 is formed with a rising portion 9c on the outer peripheral portion thereof, and the rising portion 9c is fitted into the recess 7 of the rice cooker body when the lid is closed.

The invention described in claim 2 is that the rice cooker main body 1 has a substantially oval planar shape, the pot 2 has a circular planar shape, and an outer bowl 2a and a rice cooker main body formed at the upper end of the pot 2 accommodated in the rice cooker main body 1. A gap between the left and right inner surfaces of the recess 7 formed in 1 is so small that a finger cannot enter, and an operation region X in which the finger can enter is formed between the hook 2 in the front-back diagonal direction and the inner surface of the recess. . That is, in the operation region X, a space is formed between the outer rod 2a of the hook 2 and the bottom surface of the recess so that a finger can be inserted so that the hook 2 can be attached and detached.

According to this invention rice cooker of Claim 1, the protrusion dimension of the lid | cover 3 which protrudes from the rice cooker main body 1 can be decreased, the height of the whole rice cooker can be made low, and it can summarize compactly. And the original shape which the side surface of the rice cooker main body 1 and the lid | cover 3 which forms the upper surface of a rice cooker do not continue is realizable. Moreover, since the lid | cover 3 fits into the recess 7 formed in the upper surface of the rice cooker main body 1, the airtightness of the space formed in the outer periphery of the hook 2 and the exterior improves. In particular, the rising portion 9c formed on the lid ring 9 fits into the recess 7 formed on the upper surface of the rice cooker body 1, so that the heat insulation can be further improved, so that the amount of heat radiation is reduced and the rice cooking is excellent in thermal efficiency. Can be realized.

At this time, the presence of the outer bowl-shaped engagement portion 25 makes the sealing of the rice cooker body 1 and the lid 3 more reliable, further improving the airtightness, that is, the thermal efficiency, and the height of the entire rice cooker. It can be put together in a low and compact manner.

According to the second aspect of the present invention, the width of the rice cooker body 1 is narrower than the conventional one to realize a more compact rice cooker as a whole, and the space on the outer periphery of the pot is further narrowed to further improve the thermal efficiency. Can do.

Hereinafter, embodiments of a rice cooker according to the present invention will be described with reference to the accompanying drawings.
FIG. 1 is a perspective view of the entire rice cooker for carrying out the present invention, FIG. 2 is a perspective view of the entire rice cooker with the lid open, FIG. 3 is a plan view of the rice cooker body with the lid omitted, and FIG. 4 is a rice cooker. FIG. 5 is a central longitudinal sectional view of FIG. 4, and FIG. 6 is a partially enlarged view of FIG.

  This rice cooker accommodates the pot 2 inside the rice cooker body 1 and covers the upper surface of the pot 2 housed inside the rice cooker body 1 with an openable / closable lid 3 pivotally supported on the back of the rice cooker body 1. It is. The rice cooker body 1 includes a body 4 that forms a side surface, a bottom body 5 that forms a bottom surface, and a shoulder body 6 that forms an upper surface of the rice cooker body 1, and each is molded from a synthetic resin material. The shoulder body 6 constituting the upper surface of the rice cooker main body 1 engages and integrates the outer peripheral portion with the body 4, and the inside of the outer peripheral portion is recessed to make the entire upper surface a recess 7. A large through hole is formed in the center of the recess 7 of the shoulder body 6, and a hook accommodating portion 8 is formed continuously therewith. The upper end of the pot 2 accommodated in the pot accommodating portion 8 is positioned lower than the upper end of the side wall of the rice cooker body 1. The pot 2 accommodated in the pot accommodating portion 8 can be heated by a heating means such as a heater or electromagnetic induction heating.

  The lid 3 that is pivotally supported on the back of the rice cooker body 1 includes a lid ring 9 that forms the bottom surface of the lid 3 and a lid body 10 that covers the top surface. The lid ring 9 is provided with a sealing means for the pot 2 and the steam passage 11 is provided so that the pot 2 can be heated to cook rice. In the rice cooker of the illustrated embodiment, a heating plate 13 heated by the lid heater 12 is provided on the bottom surface of the lid ring 9, and the heat radiating plate 14 is detachably attached to the lid ring 9 in such a manner that it contacts the heating plate 13. The packing 15 provided on the heat sink 14 is in close contact with the upper end of the hook 2. As a result, steam generated during rice cooking is released from the steam passage 11 formed so as to communicate the heat radiating plate 14, the heating plate 13, the lid ring 9 and the lid body 10, and the heat of the lid heater 12 is Auxiliary heating can be performed by being transmitted to the heat radiating plate 14, and condensation on the inner surface of the lid 3 can be prevented.

  A hinge structure of the lid 3 is formed on the back of the rice cooker body 1. That is, as shown in FIG. 4, a hinge space 16 recessed inward is formed in the back of the shoulder body 6, and the hinge space 16 is exposed by cutting the body 4. In the hinge space 16 that is exposed to the outside of the container, the lid 3 is pivotally supported by the main body 1 by a hinge shaft 17 so as to be freely opened and closed, and is always urged by a hinge spring 18 in the lid opening direction. Energizing the lid 3 in the opening direction is a general aspect of a rice cooker. In order to pivotally support the lid 3 on the main body 1, a metal support fitting is fixed to the shoulder body 6 with screws or other fixing means in the hinge space 16 formed on the back of the rice cooker main body 1. The back part of the lid ring 9 is mounted by the hinge shaft 17. That is, as shown in FIG. 7, a pair of hinge shaft support portions 9a and 9b are formed on the back portion of the lid ring 9 at a predetermined interval so as to project the hinge shaft 17 at the hinge shaft support portions 9a and 9b. Both ends are supported.

  In the state where only the lid ring 9 is assembled to the rice cooker body 1, the upper surface of the lid ring 9 is exposed and the hinge structure part is also exposed on the back of the rice cooker body 1. The upper surface of the lid ring 9 is covered by attaching the lid body 10 to the lid ring 9 with the ring 9 pivotally supported on the rice cooker body 1. At this time, the tongue-shaped cover piece 19 is projected on the back of the lid body 10 to cover the hinge structure exposed in the hinge space 16 located on the back of the rice cooker body 1, thereby improving the appearance. I am letting. That is, by making the tongue piece-like cover piece 19 project from the lid body 10, the conventionally used hinge cover can be omitted. In this case, since the cover piece 19 is rotated as the lid 3 is opened and closed, the hinge space 16 is wide enough to rotate the cover piece 19.

  The lid body 10 can be easily mounted by pressing against the lid ring 9 from above. That is, as shown in FIG. 7, a plurality of locking claws 20 and 20 are protruded from the outer peripheral edge portion of the lid ring 9 at an appropriate interval, and the lid body 10 formed in a shell shape as shown in FIG. On the inner peripheral edge portion of the open end, recesses 21 and 21 are formed which engage with the locking claws 20 and 20 formed on the outer peripheral edge portion of the lid ring 9. Accordingly, when the lid main body 10 is pressed from above the lid ring 9, the lid main body 10 is slightly expanded due to elastic deformation, and the lid ring 9 is pushed inward of the lid main body 10. When the locking claw 20 of the lid ring 9 reaches the position of the recess 21 of the lid body 10, the locking claw 20 of the lid ring 9 fits into the recess 21 of the lid body 10. In this way, the lid ring 9 and the lid body 10 can be easily and reliably assembled.

  As shown in FIG. 8, the lid ring 9 is stepped so that the outer peripheral portion is formed one step upward. That is, the rising portion 9 c is provided on the outer peripheral portion of the lid ring 9, the outer collar 22 is formed on the upper end portion of the rising portion 9 c, and the locking claw 20 is projected from the outer peripheral edge of the outer collar 22. A large recess 23 is formed in the inner part of the lid ring 9, and a circular rib 24 is erected in the recess 23, and the heating plate 13 is attached to the circular rib 24 so as to be supported. A heat radiating plate 14 is disposed on the lower surface of the heating plate 13 so as to be in contact with the heating plate 13, and the packing 15 attached to the heat radiating plate 14 is brought into contact with the opening edge portion of the hook 2. In order to attach the heat sink 14 to the lid 3, a heat sink set in which the heat sink 14 is supported on the support frame 14a is used. The heat sink 14 can be easily set at a predetermined position in contact.

  The lid body 10 has a shell shape that gently swells as a whole, and has a thick outer peripheral portion as shown in FIG. That is, since the lid body 10 is formed with a gentle bulge and the tangential direction of the curved surface at the outer peripheral edge portion forms an acute angle with the horizontal direction, inevitably the horizontal wall thickness at the peripheral edge portion is thick. Thus, the strength of the lid body 10 itself is improved. On the inner peripheral surface of the lid body 10 thus formed thick, a recess 21 is formed at a position slightly above the opening end, that is, a position above the plate thickness of the lid ring 9. Since the position where the recess 21 is formed coincides with the position of the locking claw 20 protruding from the outer peripheral edge of the lid ring 9, the lid main body 10 is pressed against the lid ring 9 from above. The locking claw 20 of the ring 9 fits into the recess 21 of the lid body 10 so that the lower ring surface of the lid ring 9 and the lower surface of the lid body 10 can be securely mounted.

Thus, the lid 3 completed by assembling the lid ring 9 and the lid body 10 has the lower end portion of the lid body 10 fitted to the outer peripheral portion of the outer casing 22 formed at the upper end of the rising portion 9c of the lid ring 9. An outer flange-like engagement portion 25 having a width T is formed on the outer periphery of the lid 3 by the outward projecting dimension t ₁ of the outer casing 22 and the wall thickness t _{2 of the} lower end of the lid body 10. And when the lid | cover 3 of the rice cooker was closed, as shown in FIG. 6, the lower half part of the lid | cover 3, specifically, the rising part 9c of the lid ring 9 was formed in the shoulder body 6 of the rice cooker main body 1. It fits into the recess 7 and the engaging part 25 of the lid 3 is supported on the upper end of the side wall of the rice cooker body 1. In the illustrated embodiment, the upper end of the shoulder body 6 protrudes from the upper end of the cylinder 4 to be engaged, and the engaging portion 25 is supported in a line contact state on the upper end of the shoulder body.

  In the rice cooker according to the present invention, the lid 3 fits into the recess 7 formed on the upper surface of the rice cooker body 1 to cover the upper surface of the rice cooker body 1, so that the side wall surface of the rice cooker body 1 and the side wall surface of the lid are formed. It can be formed in a non-continuous manner. Therefore, for example, if the upper surface of the lid 3 is formed into a curved surface that slightly swells, a novel rice cooker in which only the body 4 of the rice cooker body 1 appears on the outer periphery of the entire rice cooker can be realized. . In the rice cooker of the illustrated embodiment, a chamfer 26 is applied to the upper end of the cylinder 4 that forms the outer periphery of the entire rice cooker, and the impression of the cylinder 4 is emphasized. The upper surface of the rice cooker has the operation panel 27 disposed at the front end portion, and the upper surface of the lid 3 is formed so as to be a curved surface continuous with the operation panel 27, and is collectively gathered as a surface that slightly swells as a whole.

The rice cooker main body 1 is formed in a vertically long substantially oval shape as understood from FIGS. 1 and 3. And the width W of the rice cooker main body 1 is not much larger than the diameter of the pot 2 including the outer bowl 2a, but the upper end outer bowl 2a of the pot 2 to be accommodated and the recess 7 formed in the rice cooker body 1 The gap between the left and right inner surfaces is so small that fingers cannot enter. And by putting the planar shape of the rice cooker body 1 into a vertically long shape like an ellipse, inserting the fingers between the hook 2 in the front-rear direction and the inner surface of the recess 7 to put in and out the pot 2 An operation region X that can be used is formed. In the operation area X, a space high enough to allow fingers to be inserted between the bottom surface of the outer casing 2a of the pot 2 and the recess 7 can be used to reduce the overall shape of the rice cooker. This will not interfere with operations such as loading and unloading. That is, compared with the capacity | capacitance of the pot 2, the magnitude | size of the whole rice cooker can be summarized very small and compactly.
28 on the drawing is a steam hole formed in the lid main body 10 and communicating with the steam passage.

  In the rice cooker according to the present invention described above, the space formed between the top surface of the rice cooker body 1 and the bottom surface of the lid 3 is equipped with the recess 7 and the heat sink 14 formed in the shoulder body 6 of the rice cooker body. Is a space surrounded by the bottom surface of the lid ring 9, and the space is made small by fitting the lower part of the lid 3 into the recess 7 of the shoulder body 6 and forming the planar shape of the recess 7 small. It becomes. Therefore, coupled with the improvement in the airtightness of the rice cooker body 1 and the lid 3, the amount of heat released from the upper portion of the pot 2 is greatly reduced, and the thermal efficiency of rice cooking can be improved.

FIG. 1 is a perspective view of the entire rice cooker for carrying out the present invention, FIG. 2 is a perspective view of the entire rice cooker with the lid open, FIG. 3 is a plan view of the rice cooker body with the lid omitted. 4 is a longitudinal sectional view of the entire rice cooker, 5 is a central longitudinal sectional view of FIG. 6 is a partially enlarged view of FIG. FIG. 7 is a bottom view of the lid ring, FIG. 8 is a partially enlarged sectional view of the lid and the upper part of the rice cooker body. FIG. 9 is a bottom view of the lid body, FIG. 10 is a side view showing an example of a conventional rice cooker, FIG. 11 is a plan view of an example of a conventional rice cooker with the lid omitted. FIG. 12: is an example of another conventional rice cooker, Comprising: The top view which abbreviate | omitted the lid | cover.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Rice cooker main body, 2 ... Kettle, 2a ... Outer bowl, 3 ... Lid, 4 ... Body, 5 ... Bottom body, 6 ... Shoulder body, 7 ... Recessed part, 8 ... Kettle accommodating part, 9 ... Lid ring, 9a , 9b: Hinge shaft support part, 9c: Rising part, 10 ... Lid body, 11 ... Steam passage, 12 ... Lid heater, 13 ... Heating plate, 14 ... Heat sink, 14a ... Support frame, 15 ... Packing, 16 ... Hinge Space, 17 ... Hinge shaft, 18 ... Hinge spring, 19 ... Cover piece, 20 ... Locking claw, 21 ... Recess, 22 ... Outer flange, 23 ... Recess, 24 ... Circular rib, 25 ... Engagement part, 26 ... Chamfer 27: Operation panel, 28: Steam hole, X: Operation area.

Claims (2)

Rice cooker is brought into contact with the upper end opening of the shuttle accommodated a sealing member attached to the bottom surface of the pall covering openably the upper surface of the rice cooker body rice cooker body by cooker lid pivotally supported on the back of the body In
Forming a recess the top opening of the kettle than the upper end of the cooker body fitted lid on the top surface of the cooker body is positioned downwardly, the outer flange on the outer peripheral portion of the lid which fits into the recess of the cooker body And forming the engagement portion on the side wall of the rice cooker body,
The lid is composed of a lid main body that forms an upper surface of the lid and a lid ring that is attached to the lid main body and forms a bottom surface of the lid, and a rising portion is formed on an outer peripheral portion of the lid ring, and the rising portion closes the lid. A rice cooker that fits into the recess of the rice cooker body when The plane shape of the rice cooker body is approximately oval, and the planar shape of the pot is circular. The gap between the upper outer shell of the pot accommodated in the rice cooker body and the left and right inner surfaces of the recess formed in the rice cooker body is An operation area where fingers can enter is formed between the hook in the front and rear direction and the inner side surface of the recess, and the fingers are inserted between the bottom surface of the hook and the bottom of the recess in the operation area. The rice cooker according to claim 1, wherein a space with a height that can be made is formed.

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