JP2001149219A - Rice cooker - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the attachability and detachability of a heating plate and to improved the usability and durability of a product. SOLUTION: The under surface of an outer lid covering the upper part of a main body is provided with the attachment and detachment type heating plate integrated with a pan packing facing a flange part of an inner pan. The attachment and detachment type heating plate is provided with an engaging piece to the under surface of the outer lid and a knob 44 to be used in attaching and detaching operation. An energizing spring 43 acting in a direction for detaining is disposed at the knob part 44.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rice cooker used for general household or business use.

[0002]

2. Description of the Related Art Conventionally, a rice cooker of this type has a configuration as shown in FIGS. In the figure, 1
Is an outer lid made of a synthetic resin. The outer lid 1 is rotatably supported via a pin 4 on a hinge member 3 integrally formed on the upper portion of the upper frame 2. Reference numeral 5 denotes an inner cover, and the inner cover 5 is fixed to the inner surface of the outer lid 1. A detachable heating plate 6 serving as a heating element is provided on the inner cover 5, and an induction coil 7 is located above the heating plate 6. The heating plate 6 generates heat by the electromagnetic action of the induction coil 7. The mounting and dismounting structure of the heating plate 6 is such that three places are locked and two places are used as the detachable knobs 8. The knob portion 8 is formed of a resin component integrated with the heating plate 6.
At the time of attachment / detachment, the resin itself of the knob portion 8 is deformed by applying a certain force to attach / detach. A sensor 9 for detecting the temperature of the heating plate 6 is pressed against the heating plate 6 to adjust the temperature of the heating plate 6.

An engaging member 10 is located on the opposite side of the hinge member 3 and is integrally formed on the upper end of the protective frame 11. The engaging lever 12 is engaged with the outer lid 1 so as to face the engaging member 10. Is instructed to be rotatable via the pin 13. And
When the outer lid 1 is closed, the inner packing 14
And presses against the flange 15 to hermetically seal the inner pot 14.

[0004]

In recent years, there has been a demand for a rice cooker that is extremely easy to use in consideration of the elderly, in addition to compactness, usability and cleanliness. From this point of view, the heating plate with the pot packing installed inside the lid is also made detachable so that the inside of the lid can be maintained.

[0005] However, in the current configuration, only the fitting of the resins is performed, and the elastic deformation of the resin parts is used at the time of attachment / detachment. Therefore, a considerable force is required. It was found and it was difficult to put on and take off. In addition, depending on the manufacturing and use conditions, the dimensions of the hot plate fitting portion are not constant, but rather require considerable dimensional accuracy, making it more difficult to stabilize the attaching / detaching force.

According to the present invention, a rice cooker having improved cleanliness, operability, and usability can be provided, in which the detachability is improved and the detachment force is not influenced by manufacturing and use conditions. Things.

[0007]

A main body having an inner pot, an outer lid for covering the upper part of the main body, and a detachable heating plate integrally formed on a lower surface of the outer lid with a pot packing opposed to the inner pan flange portion are provided. The detachable heating plate is provided with a locking piece to be attached to the lower surface of the outer lid and a knob at the time of the attaching / detaching operation, and the knob has an urging spring acting in a locking direction.

[0008]

The invention according to claim 1 is characterized in that a main body having an inner pan, an outer lid covering the upper part of the main body, and a pan packing facing the inner pan flange portion are integrated with a lower surface of the outer lid. A detachable heating plate is provided, the detachable heating plate is provided with a locking piece on the lower surface of the outer lid, and a knob portion for attaching and detaching operation, and the knob portion has a biasing spring that works in a locking direction. Thus, the heating plate can be easily removed from the outer lid by compressing the biasing spring. Further, even if the outer lid and the heating plate are deformed due to manufacturing, use conditions, etc., the biasing spring absorbs the deformation and realizes stabilization of the attaching / detaching force.

According to a second aspect of the present invention, the detachable heating plate is locked at three locations, and has a single locking piece and two biased spring-operated knobs, so that a larger outer lid and heating can be achieved. It is possible to cope with the deformation of the plate, and the detachability and detachment force are further stabilized.

According to a third aspect of the present invention, the retaining plate of the detachable heating plate is provided at the front side of the main body, and two knobs for biasing the spring are provided at both ends on the hinge side so that the heating plate can be detached. At this time, since the fitting part and the operation part are on the hinge side,
There is little rattling of the outer lid and the detachability can be improved,
In addition, the product can be made more compact at the front.

[0011]

(Embodiment 1) Hereinafter, a first embodiment of the present invention will be described with reference to FIGS. In the figure, reference numeral 31 denotes a substantially cylindrical body whose upper surface is open. This body 31
The upper frame 32 fits into the opening of the frame. The body 31
Inside, a pot storage portion is formed by the protection frame 33 and the coil base 34. The coil base 34 is formed in a bottomed cylindrical shape, and is fixed to the upper frame 32 via the protective frame 33 at the upper end of the coil base 34.

Reference numeral 35 denotes an outer cover made of a synthetic resin.
Is rotatably supported via a pin 37 on a hinge member 36 integrally formed on the rear portion of the upper frame 32, and is urged by a lid spring 38.

Reference numeral 39 denotes a pot packing 40 attached / detachable heating plate, which is attached to an outer lid cover 41 constituting the lower surface of the outer lid 35. Further, an induction coil 42 for inductively heating the heating plate 39 is provided on the outer lid cover 41. Here, the heating plate 39 determines the magnitude of the current supplied to the induction coil 42 in the same manner as the heating principle of the electromagnetic cooker,
The amount of heating of the heating plate 39 is determined by the number of turns, etc., but the effect of the heating plate 39 in the rice cooker requires as strong a heating power as possible to exert an oven effect from above the rice.

On top of that, there are market demands for rice cookers, such as ease of use and cleanliness of the product, and a configuration in which the pot packing 40 and the additional heating plate 39 which are currently in the lid 35 are detachable. An urging spring 49 is provided at a fitting portion between the heating plate 39 and the outer cover 41. By adopting this configuration, it is possible to achieve both the cleanliness of the heating plate 39 and the operability.

As an embodiment of the present invention, a hook knob 44 having a rotating shaft, which is another component, is installed on the heating plate 39 side, and the hook knob 44 is urged to the outer lid cover 41 by an urging spring 43. The configuration was taken.

With this configuration, when the heating plate 39 is attached or detached, the heating plate 39 can be easily attached or detached by pinching the hook knob 44. In addition, by installing the hook knob 44 urged by the urging spring 43 on the heating plate 39, variations in the molding of the outer cover 41 and the heating plate 39 during the manufacturing process can be absorbed, and product variations can be reduced. It also contributes to stabilizing the attachment / detachment force. In addition, it is possible to absorb the deformation of the product when using the product, and to stabilize the attaching / detaching force of the heating plate 39 even during long-term use, thereby realizing a product with excellent durability. It is.

The present invention is not limited to models having an IH on the lid,
It goes without saying that other than that can be used.

(Embodiment 2) A second embodiment will be described with reference to FIGS. Since a part of the configuration is the same as that of the first embodiment, the description is partially omitted. In the figure, 61 is a heating plate, 62 is a pot packing, 63 is an outer lid cover, and urges the heating plate at two of the three positions of the locking portion with an urging spring,
These two parts are configured on the hinge side.

In this configuration, the operation of attaching and detaching the heating plate 61 is an operation of lifting the heating plate 61 upward from below, which is different from the path of opening and closing of the outer lid 64. In this operation, when the heating plate 61 is attached / detached, the outer lid 64 does not close and move, and the heating plate 61 can be easily attached / detached.

For example, if there is a knob on the side opposite to the hinge side, the attaching / detaching operation is moved downward from above. Then, the outer lid is closed when the heating plate 61 is attached and detached,
Another operation of pressing the outer lid 64 at the time of attachment / detachment is required. Then, the heating plate 61 is held by one hand and the outer lid 64 is pressed by the other hand.
1 cannot be safely and easily removed.

[0021]

As described above, according to the present invention, it is possible to improve the operability of the rice cooker by improving the detachability of the heating plate and stably maintaining the detachment force. Can be.

In particular, the invention according to claim 1 is a detachable type in which a main body having an inner pot, an outer lid for covering the upper part of the main body, and a pot packing opposed to the inner pot flange portion are integrated on the lower surface of the outer lid. A heating plate, wherein the detachable heating plate is provided with a locking piece to be attached to the lower surface of the outer lid, and a knob at the time of attaching and detaching operation, and the knob has an urging spring acting in a locking direction. Thus, the heating plate can be easily removed from the outer lid.

According to the second aspect of the present invention, the detachable heating plate is locked at three positions, and has one locking piece and two knobs with biasing springs, so that it can be manufactured and used under various conditions. Even when the outer lid and the heating plate are deformed, the biasing spring absorbs the deformation, and it is possible to stabilize the attaching / detaching force.

According to the third aspect of the present invention, the retaining plate of the detachable heating plate is provided on the front side of the main body, and two knobs for biasing the spring are provided at both ends on the hinge side so that the heating plate can be detached. At this time, since the fitting part and the operation part are on the hinge side,
There is little backlash in the outer lid, and the detachability can be improved.

[Brief description of the drawings]

FIG. 1 is a sectional view of a rice cooker according to a first embodiment of the present invention.

FIG. 2 is an enlarged sectional view of a main part of the rice cooker.

FIG. 3 is a schematic diagram of a main part of the rice cooker.

FIG. 4 is a schematic view of a main part of a rice cooker according to a second embodiment of the present invention.

FIG. 5 is a diagram illustrating the operation of the rice cooker.

FIG. 6 is a sectional view of a conventional rice cooker.

FIG. 7 is a sectional view of a main part of the rice cooker.

[Explanation of symbols]

 35, 64 Outer lid 40, 62 Pot packing 39, 61 Heating plate 44 Knob

 ──────────────────────────────────────────────────の Continued on the front page F term (reference) 3K051 AD39 CD43 4B055 AA02 BA38 BA56 CA25 CA67 CA70 CA71 CC26 CC27 CC33 DA06 DB01

Claims (3)

[Claims] 1. A detachable heating plate, comprising: a main body having an inner pot; an outer lid covering an upper portion of the main body; and a detachable heating plate in which a pot packing opposed to the inner pan flange portion is integrated on a lower surface of the outer lid. A rice cooker having a heating plate provided with a locking piece on the lower surface of the outer lid and a knob for attaching and detaching operation, and the knob having an urging spring acting in a locking direction. 2. The rice cooker according to claim 1, wherein the detachable heating plate is locked at three places, and has one locking piece and two knobs with biasing springs. 3. The rice cooker according to claim 1, wherein the locking portion of the detachable heating plate is provided at the front side of the main body, and two knob portions for biasing the spring are provided at both ends on the hinge side.