JP3633408B2 - rice cooker - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a rice cooker used for general home use or business use.
[0002]
[Prior art]
Conventionally, this type of rice cooker has a configuration as shown in FIGS. In the figure, reference numeral 1 denotes an outer lid made of synthetic resin, and this outer lid 1 is rotatably supported by a hinge member 3 integrally formed on the upper part of an upper frame 2 via a pin 4. An inner cover 5 is fixed to the inner surface of the outer lid 1. The inner cover 5 is provided with a detachable heating plate 6 as a heating element, and an induction coil 7 is located above the heating plate 6. The heating plate 6 generates heat due to the electromagnetic action of the induction coil 7. In this attachment / detachment configuration of the heating plate 6, three places are latched, and two places are used as attachment / detachment knobs 8. The knob portion 8 is formed of a resin component integrated with the heating plate 6, and when attaching / detaching, the resin itself of the knob portion 8 is deformed by applying a certain amount of force and is attached / detached. 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.
[0003]
An engagement member 10 is located on the opposite side of the hinge member 3 and is integrally formed with the upper end of the protective frame 11. An engagement lever 12 is provided on the outer lid 1 so as to face the engagement member 10. It is instruct | indicated that it can rotate through. And when the outer lid 1 is closed, the pot packing 14 is pressed against the flange 15 of the inner pot 14 to seal the inner pot 14.
[0004]
[Problems to be solved by the invention]
In recent years, rice cookers have been required to be extremely easy to use, taking into account the elderly, in addition to compactness, usability and cleanliness. From this point of view, the heating plate with pan packing installed inside the lid is also detachable so that the inside of the lid can be maintained.
[0005]
However, in the current configuration, the resin only fits in, and since the elastic deformation of the resin parts is used at the time of attachment / detachment, a considerable amount of force is required. Was difficult. In addition, the size of the heating plate fitting portion is not constant depending on the manufacturing and use conditions, and considerable dimensional accuracy is required, making it more difficult to stabilize the attachment / detachment force.
[0006]
The present invention improves the detachability, can be made independent of manufacturing and use conditions regarding the detachment force, and enables a rice cooker with improved cleanliness, operability, and usability. .
[0007]
[Means for Solving the Problems]
A main body having an inner pot, an outer lid that covers the upper part of the main body, and a removable heating plate that integrates a pot packing that faces the inner pot flange portion on the lower surface of the outer lid, the removable heating plate includes: A locking piece to the lower surface of the outer lid and a knob portion at the time of attaching / detaching operation are provided, and the knob portion has a biasing spring that works in the locking direction.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
The invention according to claim 1 includes a main body having an inner pot, an outer lid that covers the upper portion of the main body, and a detachable heating plate in which a pot packing facing the inner pot flange is integrated on the lower surface of the outer lid. the detachable heating plate has a locking piece to the outer lid underside is provided with a knob portion at the time of attaching and detaching operation is another part, by the knob portion had a biasing spring acting in the direction of locking 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 urging spring absorbs the deformation and realizes stabilization of the attaching / detaching force.
[0009]
According to the second aspect of the present invention, the detachable heating plate is locked at three places, and has one locking piece and two urging spring-equipped knobs, so that the outer cover and the heating plate can be deformed. Therefore, detachability and detachment force are further stabilized.
[0010]
According to the invention of claim 3, the engaging portion of the detachable heating plate is provided on the front side of the main body, and two knob portions that are biased with springs are provided at both ends of the hinge, so that the fitting can be performed when the heating plate is attached or detached Since the part and the operation part are on the hinge side, there is little backlash of the outer lid and the detachability can be improved, and in addition, the product can be made compact in front.
[0011]
【Example】
(Example 1)
A first embodiment of the present invention will be described below with reference to FIGS. In the figure, 31 is a substantially cylindrical body having an upper surface opened. An upper frame 32 is attached to the opening of the body 31. Inside the body 31, a protective frame 33 and a coil base 34 form a pot housing portion. 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 portion of the coil base 34.
[0012]
Reference numeral 35 denotes an outer lid made of synthetic resin. The outer lid 35 is rotatably supported by a hinge member 36 integrally formed at the rear portion of the upper frame 32 via a pin 37 and is biased by a lid spring 38. .
[0013]
Reference numeral 39 denotes a pan packing 40 attached / detachable heating plate, which is attached to the outer lid cover 41 constituting the lower surface of the outer lid 35. An induction coil 42 for inductively heating the heating plate 39 is installed on the outer lid cover 41. Here, in the heating plate 39, the heating amount of the heating plate 39 is determined by the magnitude of the current passed through the induction coil 42, the number of turns of the induction coil 42, etc., as in the heating principle of the electromagnetic cooker. The effect of the heating plate 39 requires as much heating power as possible in order to exhibit the oven effect from the top of the rice.
[0014]
In addition, as a market requirement for rice cookers, there is ease of use of products and cleanliness, and the pan packing 40 and the additional heat plate 39 currently in the lid 35 are detachable. A biasing spring 49 is provided at the fitting portion between the heating plate 39 and the outer lid cover 41. By adopting this configuration, it is possible to achieve both cleanliness and operability of the heating plate 39.
[0015]
As an example of the present plan, 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 the urging spring 43. I took it.
[0016]
By adopting this configuration, when the heating plate 39 is attached / detached, it can be easily attached / detached by pinching the hook knob 44. Further, by installing the hook knob 44 urged by the urging spring 43 on the heating plate 39, it is possible to absorb variations in molding of the outer lid cover 41 and the heating plate 39 in the manufacturing process, and to reduce product variations. It also contributes to stabilizing the attachment / detachment force. In addition, it can absorb the deformation of the product as it is used, and the attaching and detaching force of the heating plate 39 is stable even during long-term use, thus realizing a product with excellent durability. It is.
[0017]
It goes without saying that the present invention is not limited to models having an IH on the lid, but can be used for other types.
[0018]
(Example 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, a part of the description is omitted. In the figure, 61 is a heating plate, 62 is a pot packing, and 63 is an outer lid cover. The heating plate is urged by two urging springs out of the three portions of the locking portion, and the two locations are on the hinge side. It is composed.
[0019]
In such a configuration, the operation at the time of attaching / detaching the heating plate 61 is an operation of lifting the heating plate 61 upward from below, and is different from the opening / closing locus of the outer lid 64. In this operation, the outer lid 64 is not closed and moved when the heating plate 61 is attached / detached, and the heating plate 61 can be attached / detached easily.
[0020]
For example, if there is a knob on the side opposite to the hinge side, the attaching / detaching operation is moved from above to below. Then, the outer lid closes when the heating plate 61 is attached / detached, and another operation of pressing the outer lid 64 when attaching / detaching is required. Then, the heating plate 61 is held with one hand and the outer lid 64 is pressed with the other hand, so that the heating plate 61 cannot be removed safely and easily.
[0021]
【The invention's effect】
As described above, according to the present invention, it is possible to improve the detachability of the heating plate, to keep the detachment force stable, and to realize a rice cooker with further improved operability.
[0022]
In particular, the invention described in claim 1 includes a main body having an inner pot, an outer lid that covers the upper portion of the main body, and a detachable heating plate in which a pot packing that faces the inner pot flange portion is integrated on the lower surface of the outer lid. wherein the detachable heating plate has a locking piece to the outer lid underside is provided with a knob portion at the time of attaching and detaching operation is another part, the knob portion having a biasing spring acting in the direction of locking Thus, the heating plate can be easily removed from the outer lid.
[0023]
The invention according to claim 2 is that the detachable heating plate is locked at three positions, and has one locking piece and two knob portions with a biasing spring, so that the outer lid can be manufactured and used under conditions of use, Even if the heating plate is deformed, the urging spring absorbs the deformation, and the attachment / detachment force can be stabilized.
[0024]
According to the invention of claim 3, the engaging portion of the detachable heating plate is fitted on the front side of the main body, and two knob portions that are spring-biased are provided at both ends of the hinge side, so that the fitting can be performed when the heating plate is attached or detached. Since the part and the operation part are on the hinge side, there is little backlash of the outer lid and 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. Schematic diagram of the main part of the rice cooker of the second embodiment [FIG. 5] Operation explanatory diagram of the rice cooker [FIG. 6] Cross-sectional view of the conventional rice cooker [FIG. 7] Cross-sectional view of the main part of the rice cooker Description】
35, 64 Outer lid 40, 62 Pot packing 39, 61 Heating plate 44 Knob part

Claims (3)

A body having a inner bowl, an outer lid covering the upper body, and a said outer detachable heating plate with an integrated pan gasket which faces the inner bowl flange on the lid bottom surface, the detachable heating plate, a locking piece to the outer lid underside is provided with a knob portion at the time of attaching and detaching operation is another part, rice cookers which the knob had a biasing spring acting in the direction of locking. The rice cooker according to claim 1, wherein the detachable heating plate is latched at three locations and has one latch piece and two knob portions with urging springs. 3. The rice cooker according to claim 1 or 2, wherein the latching portion of the detachable heating plate is provided on the front side of the main body, and two knob portions that are biased with springs are provided at both ends of the hinge side.

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