JP2000237043A - Rice cooker - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent due condensation at the inner surface side of a display part and to prevent a display blur by providing a humidity absorbing material in a space sealed by means of a sealing material between an operation board for covering an outer lid front surface and the display part consisting of liquid crystal for displaying the control contents of a rice cooker. SOLUTION: An operation board 13a is adhered and fixed to an outer lid 32 in the rice cooker by a double faced tape 24 from the outer part of the outer lid 32. A control substrate for controlling a rice cooker main body is stored in the space part inside the operation board 13a together with the board 13a. Liquid crystal 53 for displaying the control contents of the rice cooker is mounted on the control substrate. A ring shaped sealing material 51b having a nearly square shape in cross section is arranged in the periphery of a part between the board 13a and liquid crystal 53 in order to seal the space between the crystal 53 and the board 13a, the part between the both of them 13a and 53 is adopted as the sealed space and the humidity absorbing material 52 such as silica gel or the like is stored inside the sealed space. Thus, the inside of the sealed space is dehumidified so that due condensation at the inner side of the display part is surely prevented.

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 ordinary households.

[0002]

2. Description of the Related Art Conventionally, this type of rice cooker is, for example, shown in FIG.
-5. In the figure, pot 1
Are removably stored in the rice cooker main body 2. Below the pot 1 in the rice cooker main body 2, a heating coil 7 for inductively heating the pot 1 and a heating substrate 8 for controlling heating are provided. The lid 3 covers the upper opening of the rice cooker main body 2 so as to be openable and closable, and the lower surface is covered with an outer lid cover-4.
A ring-shaped pot packing 6 having a U-shaped cross section is provided on the outer peripheral side of the heating plate 5, and a flange portion 1a of the pot 1 is provided.
Is in contact with The lid 3 has a curved shape for the sake of design and thickness reduction, has a thicker central portion and a thinner shape toward the outer edge, and has an upper frame 3a that pivotally supports the lid 3. A moisturizing cap 14 is provided at substantially the center of the lid 3 to discharge steam to the outside of the main body. Also, a steam port 15 for discharging steam
And a liquid crystal support plate 20 provided therein.
Liquid crystal panel 17 supported on the vehicle, an operation button 18 and a horseshoe-shaped operation board 10 having a lead wire at the rear.
Is formed with an outer lid 9 which forms a concave portion 22 having a bottomed concave shape and a lead-out opening 21 for wiring a lead wire 25. By providing the outer lid 9 constituting the upper surface of the lid 3 with the concave portion 22 for accommodating the operation substrate 10, the operation substrate 10 can be attached and detached from the outside of the lid 3, and furthermore, the outer surface is formed by the curved surface and the concave portion. The rigidity of the lid 9 is improved.

[0003] Further, the shape of the operation board 10 is made similar to the outer edge shape of the outer lid 9, and further, the vicinity of the steam port 15 is formed in a horseshoe shape with a depression, so that the steam port 15 is arranged substantially at the center of the lid 3. In addition, many operation buttons 18 can be arranged in a well-balanced and easy-to-use arrangement in front.
An annular IH coil 12 is provided around the steam port 15. The steam port 15 is in contact with the heating plate 5 and the outer lid 3 and is sealed.
A steam plate packing 16 is provided. The drawer opening 21 is provided with a cover 11 that shields a space inside the concave portion where the operation board 10 is mounted inside the cover 3 and another space inside the cover 3. Reference numeral 12 denotes a heater for heating the heating plate 5. It may be IH.

The recess 22 of the outer lid 9 for storing the operation board 10
On the upper surface, a display plate 13 serving as an outer surface made of a resin material formed by bonding a film on which a film displaying the functions of the operation buttons 18 and the like is adhered to the outer lid 9 by adhesion with a water-resistant double-sided tape 24. Have been. The double-sided tape 24 prevents water from entering the inside of the lid from outside. A sensor 23 for detecting the presence or absence of the heating plate 5 is fixed to the recess 22. The presence or absence of the heating plate 5 is detected by the sensor 23.

[0005]

However, in the above-mentioned rice cooker, the operation board 10 has a seal structure against external moisture by being surrounded by the concave portion 22 and the operation plate 13a. There is a problem that the operation board absorbs moisture during the rainy season or the like, and the moisture evaporates due to the heating during the cooking of the rice and dew forms on the inner surface side of the display unit having a low temperature, thereby causing a problem that the display is blurred. In particular, it is desired that condensation does not occur in a narrow space surrounded by the concave portion 22 and the operation plate 13a. Further, since the narrow space surrounded by the concave portion 22 and the operation plate 13a is large, a large amount of moisture absorbent is required. Therefore, what is effective in a small amount has been desired.

An object of the present invention is to solve the above-mentioned problem and to realize a rice cooker in which dew is formed on the inner surface of the display unit and the display is not blurred.

[0007]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides an operation plate for covering an outer lid surface, a liquid crystal for displaying a control content of a rice cooker, a closed space between the operation plate and the liquid crystal surface. And a hygroscopic material provided in the closed space.

[0008]

According to the first aspect of the present invention, a closed space is formed by an operation plate and a liquid crystal surface in an outer lid,
An object of the present invention is to realize a rice cooker that absorbs moisture from an operation board or the like with a hygroscopic material and does not blur display.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to FIGS. The same parts as those in the conventional example are indicated by the same numbers. As disclosed in the figure, the feature of the present invention is that a narrow enclosed space is formed by the operation plate, the liquid crystal surface, and the sealing material in the outer lid, and a moisture absorbing material is arranged in this space, and only in the narrow enclosed space. Efficiently reduce humidity and detect the presence of outer cover 4 and heating plate 5 by arranging operation unit, control board and temperature controller, outer cover and temperature controller, and gas assist molding of outer cover. The present invention provides a compact rice cooker with good assemblability by reducing the number of parts due to the elimination of the sensor 23.
The ingenuity will be described in order.

First, the operation plate 13a is attached to the outer lid 32 from outside of the outer lid 32 by bonding with a waterproof double-sided tape 24.
It is fixedly attached to. An outer lid 32 that covers the upper opening of the rice cooker main body 31 and a control board 33 that controls the rice cooker main body 31 are housed in the space 34. The outer lid 32 is formed by a simple press, that is, gas-assist molding, and as is well known in the art, a thick rib or a thick boss is directly
4 and can be configured to be free from sink marks and hard to deform. As a result, the outer cover 4
Is no longer needed. Further, the outer lid 32 is rotatably supported by a hinge portion 36 of the upper frame 35, and is engaged with a hook lever receiving portion 40 of an inner lid support 39 by a tip catching portion 38 of a hook lever 37 on the other side of the hinge portion 36. Combine.

Reference numeral 41 denotes an inner lid support receiving portion that fits with the outer lid 32. Reference numeral 42 denotes a pot having an open top surface for storing a cooked item such as rice. There is a packing 44 which is sealed by a flange 43 on the outer peripheral edge of the upper surface of the pot 42. The packing 44 is sandwiched between the inner lid support 39 and the inner lid 45. The packing 44, the inner lid support 39, and the inner lid 45 constitute an inner lid unit 46.
If the inner lid unit 46 is not attached to the outer lid 32,
Since the tip catching portion 38 of the hook lever 37 is eliminated, the outer lid 32 cannot be closed. This eliminates the need for the sensor 23 for detecting the presence or absence of the inner lid.

On the other hand, the inner lid 45 has holes 46 for passing steam.
Is provided. The steam is discharged outside the main body through the holes 46. 47 is a heater 48 for heating the inner lid 46.
It is a radiator plate that supports. A radiating plate packing 49 for sealing between the radiating plate 47 and the inner lid 45 is fixed. An outer lid packing 50 for sealing between the outer lid 32 and the heat radiating plate 47 is sandwiched. The dew on the inner lid 45 is blown off by heating the heater 48. Returning to FIG.
2 is a hygroscopic material. Usually, silica gel or the like is used. 5
Reference numeral 1b denotes a liquid crystal 53 for displaying the content of control of the rice cooker, the operation plate 13a, and a sealing material forming a closed space with the surface of the liquid crystal 53. The seal member 51b has a substantially square annular shape.

The operation of the embodiment will be described with the above configuration.

An operation plate for covering the surface of the outer lid, a liquid crystal 53 for displaying the control contents of the rice cooker, a sealing material 51b for forming a narrow enclosed space between the operation plate 13a and the liquid crystal surface, and a moisture absorbing material 52 for the enclosed space are provided. As a result, the moisture in the narrow enclosed space is efficiently absorbed by the moisture absorbing material, the humidity in the space is reduced, and dew condensation on the inner surface side of the display unit can be extremely easily eliminated. Also, the volume of the enclosed space can be reduced,
As a result, the amount of the hygroscopic material is significantly reduced, and resource saving can be achieved. According to the experimental results, the conventional concave portion 22 required a hygroscopic material having a size of 10 mm × 10 mm × 5 mm.
mm × 3 mm is sufficient, and the dew condensation can be eliminated with a volume of about 1/7. This is because the closed space exists on the inner surface of the recess 22, so that the closed space becomes a double seal space of the recess 22 and the closed space. This is because the temperature of the closed space does not greatly differ from that of the outside air, and the inside of the closed space hardly forms dew.

In addition, by assembling the outer lid, the moisture absorbing material, and the operation plate at the end of the process in order of assembly, it is possible to prevent forgetting to insert the moisture absorbing material.

[0016]

As described above, according to the first aspect of the present invention, the operation plate for covering the outer lid surface, the liquid crystal for displaying the control contents of the rice cooker, the operation plate and the liquid crystal surface constitute a closed space. The operation board and the hygroscopic material are built in from the outside of the outer lid by providing the sealing material to be used and the hygroscopic material in this closed space, and by attaching the operation plate lastly, the moisture in the narrow operation board is extremely efficient. The moisture in the space portion is easily absorbed by the hygroscopic material, and the humidity in the space portion is easily reduced, and the dew condensation on the inner surface side of the display portion disappears.

In addition, by assembling the outer lid, the moisture absorbing material, and the operation plate at the end of the process in order of assembly, it is possible to prevent forgetting to insert the moisture absorbing material. Furthermore, the sensor for detecting the presence or absence of the inner lid is eliminated, the number of parts is reduced, the rice cooker itself can be reduced, the portability and installation can be improved, and the number of assembly steps can be reduced. In particular, there is an effect that the thickness of the outer lid can be reduced and a compact can be realized.

[Brief description of the drawings]

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

FIG. 2 is a sectional view of the rice cooker.

FIG. 3 is a plan view of the rice cooker.

FIG. 4 is a sectional view of a main part of a conventional rice cooker.

FIG. 5 is a sectional view of the main part of the rice cooker.

[Explanation of symbols]

 13a operation plate 32 outer lid 51b sealing material 52 hygroscopic material 53 liquid crystal

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Masahiro Koyama 1006 Kazuma Kadoma, Kadoma-shi, Osaka Matsushita Electric Industrial Co., Ltd. F-term (reference) 4B055 AA02 BA16 BA54 BA57 CA22 CA65 CA66 CA70 CB17 CC27 CD41 CD51 FA09 FC13 FD01

Claims (1)

[Claims] 1. An operation plate for covering a surface of an outer lid, a liquid crystal for displaying a control content of a rice cooker, and a sealing material for forming a sealed space by the operation plate and the liquid crystal surface. A rice cooker provided with a hygroscopic material.