JP2934032B2 - rice cooker - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rice cooker having a heat retaining function.

[0002]

2. Description of the Related Art The structure of a conventional rice cooker is shown in FIG.

In the figure, 1 is an inner container, 2 is an outer pan, 3 is a main body,
Reference numeral 4 denotes an inner lid provided so as to cover the opening of the inner container 1. A hot plate 5 is provided so as to be in contact with the lower part of the inner container 1, and a sheath heater 6 is built in the hot plate 5. 7
Is a center thermo provided at the center of the hot plate.

The lid assembly 8 includes a lid 9 and a lid cover 10, and an inner lid 1 made of a material having good heat conductivity such as aluminum.
1, a heat insulating material 12 made of glass wool is incorporated therein. A center packing 13 is provided so that the inner lid 4 is pressed against the inner container 1 when the lid assembly 8 is closed.

A lid packing 14 is provided on the outer periphery of the inner lid 11 to prevent steam leakage. 15 is a substrate, 1
6 is a lid heater and 17 is a horizontal heater.

Reference numeral 18 denotes an upper ring connecting the main body 3 and the outer shuttle 2, which rotatably supports one end of the lid and fixes the other end of the lid with a latch. Reference numeral 19 denotes a steam hole, and reference numeral 20 denotes a hole provided in the inner lid 4 for removing steam. An operation unit 21 is fixed to the main body 3 with screws.

[0007]

In the conventional rice cooker, the panel cover for protecting the board 15 of the operation unit is divided into two parts, a main body part and a cover part. The number of parts and the assembly time were long.

Conventionally, when the panel terminal and the main body 3 are not made of a heat-resistant resin when they generate heat and ignite due to incomplete insertion of the wiring terminal into the substrate 15, the heat-resistant resin is used.
Fire was transferred to these and it was burned.

Further, in the prior art, it is difficult to mount the operation panel portion because it is fixed from the inside of the main body.
5 and the operation unit were fixed separately, so that assembling took time.

The present invention has been made in view of the above, and has as its object to provide a rice cooker which simplifies parts configuration, improves assembling workability, and is excellent in safety.

[0011]

According to the onset bright SUMMARY OF THE INVENTION The means for solving the problems is a rice cooker body 31, solid to the upper end of該炊rice body 31
Covers the fixed upper ring 42 and the bottom of the rice cooker body 31
An operation unit for controlling the heating and the like of the bottom cover 40 and the inner container 32
74 is provided on the rice cooker main body 31 for the operation unit 74.
Mounting holes 85 are formed, and the operation portion 74 is
Part is engaged with the hole wall of the mounting hole 85, and both upper and lower ends are forward.
It is sandwiched and fixed between the above-described ring 42 and the bottom cover 40 .

The operation unit 74 includes an operation panel 75,
A panel cover 76 for supporting the board and protecting a substrate 78 on which the control electronic components are mounted.
Is formed of a flame-retardant material, and accommodates a terminal portion for wiring to the substrate 78 inside the panel cover 76.

The operation unit 74 includes an operation panel 75,
This is fixed to protect the board 78 on which the control electronic components are mounted.
And a panel cover 76 that
A groove 84 is formed between the control panel 75 and the operation panel 75.
The hole wall of the mounting hole 85 is engaged .

[0014]

In the above-mentioned means for solving the above problems, the operating portion 74 is fitted into the rice cooker main body 31 from above and below while assembling the groove portion 84 of the operating portion 74 with the hole wall of the mounting hole 85 of the rice cooker main body 31 during assembly. . Then, the operation unit 74 is moved to the upper ring 4.
2 and the bottom cover 40 to clamp and fix. In this way, the operation section 74 can be fixed very simply and reliably.

[0015]

Further, since the panel cover 76 is made of a flame-retardant material, even if the wiring terminals are incompletely inserted into the substrate 78 and heat is generated, the loss of fuel can be minimized.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS. 1 is a vertical sectional view of a rice cooker showing one embodiment of the present invention, FIG. 2 is a vertical sectional view of a lid assembly, FIGS. 3 to 6 are views showing a steam packing, and FIGS. 7 to 10 are steam valves. FIGS. 11 to 14 show the operation unit, FIG. 15 shows the appearance of the rice cooker, FIG. 16 shows the state of attachment between the rice cooker main body and the operation unit, and FIG. 17 shows the rice cooker main unit 18 to 20 are views showing an upper ring of the rice cooker main body, and FIGS. 21 to 22 are views showing a hot plate.

As shown in FIG. 1, in the jer rice cooker according to the present invention, an outer pan 33 is provided inside a rice cooker body 31 so as to cover an inner container 32, and a concave portion 34 for fitting a hot plate is formed in the bottom of the outer pan 33. A hot plate 35 for cooking rice is fitted into the recess 34 so as to contact the bottom of the inner container 32, and a heater 36 for keeping heat is attached to the outer surface of the outer pan 33. A center thermo 37 is installed at the center of the bottom of the outer pan 33, and the inner container 3 is moved by a thermo spring 38.
2 are contacted.

The outer peripheral portion of the side surface of the outer pan 33 is covered with a heat insulating material 39 made of glass wool or the like to prevent heat radiation. The outside of the outer pan 33 is covered with the rice cooker main body 31 on the side and the bottom cover 40 on the bottom. Upper ring 4 is the upper end of outer pan 33
2, and the upper ring 42 is fixed to the upper end of the main body 31 by staking.

The upper surface of the opening of the inner container 32 is covered with a lid assembly 43. One end of the lid assembly 43 is detachably supported on the upper ring 42 via a hinge 44, and a latch button 46 is rotatably mounted on the other end about a shaft 46a. Upper ring 42 facing latch button 46
Is provided with a projection locking portion 47 for locking with the latch button 46.

The lid assembly 43 has a heat insulating material 51 built in between an outer lid 48 made of a resin such as polypropylene (PP) and an inner lid 49 made of an aluminum plate or the like having good heat conductivity.
As shown in FIG. 2, a plurality of protrusions 53 for locking the inner cover are provided on the outer peripheral rib portion 52 of the outer cover 48, and a curl 54 for engaging with the protrusion 53 is provided on the outermost periphery of the inner cover 49. Provided,
When the projection 53 and the curl 54 are engaged, the inner lid 49
Is slightly up and down.

At the center of the lid assembly 43, there is provided a steam port 56 for steam generated from the inner container 32 and a mucilage (oneba) for cooking rice. This steam port 56 is
And a steam packing 57 installed between the inner lid 49 and a steam valve 58 detachably installed at the center of the inner lid 49.

The steam packing 57 is made of silicone rubber as shown in FIGS.
9 is formed in a bowl shape so as to have a bag-shaped space 59 for temporarily storing steam or mucus between the outer lid 48 and upper and lower ends thereof. And inner lid 4
9 to prevent steam leakage. Since the steam packing 57 is made of silicone rubber, it has elasticity. Therefore, when the lid assembly 43 is closed, the inner lid 49 is pressed against the flange 32a of the inner container 32 to prevent steam leakage. It functions as an urging means for prevention.

As shown in FIGS. 7 to 10, the steam valve 58 is also made of silicone rubber, and is detachable, so that mucus such as rice may be removed from the steam valve 58 and the steam packing 5.
Even if it adheres to the inner wall of 7, it can be cleaned.
A projection pipe 60 is provided at the center of the steam valve 58, and a thin-film valve element 61 is formed at the tip thereof. The role of this valve 61 is to separate steam (mice) and steam that come out during cooking rice, to prevent the blow-up of the mucus as much as possible, and to prevent the steam from directly hitting the outer lid 48. The purpose is to prevent thermal degradation. Then, at the time of keeping the temperature, the valve 61 is closed to maintain the airtightness, and serves to keep the rice delicious. The valve element 61 faces in the opposite direction to the steam hole 63 of the outer lid 48, and the right end 61a in FIG. The center can be opened and closed freely. Further, a small hole 66 is provided in the base portion 65, which is the base of the protruding pipe 60, and plays a role of returning the accumulated juice, moisture and the like during the rice cooking to the inner container 32 after the rice cooking.

A steam hole 63 for discharging steam is formed in the outer lid 48 facing the projection pipe 60 provided at the center of the steam valve 58. The position of the steam hole 63 is not directly above the protruding pipe 60 of the steam valve 58 within the range of the bag-shaped space 59 formed by the steam packing 57, but at the outermost periphery of the bag formed by the steam packing 57. It is installed in a position where there is not. Therefore, the mucus that comes out during cooking rice is directly
8 and after cooking rice, the outer lid 48
Is opened, even if a little mucus remains in the bag-like space 59 formed by the steam packing 57, the bag-like space 59
, And does not leak to the outside of the outer lid 48 directly.

The heat insulating material 51 is made of a material that does not easily absorb water, such as styrofoam, polyethylene foam, silicone foam, and water wool that has been subjected to water repellent treatment. It is considered that there is no problem even if it is done.

The disk-shaped heating plate 35 is formed by the method shown in FIGS.
As shown in FIG. 22, a sheath heater 68 is built in by caulking or casting. The terminal section 69 of the sheathed heater 68 is installed in the horizontal direction in order to minimize the height of the product. In order to pull the terminal portion 69 out of the outer pan 33,
A through hole 34b for extracting a terminal is formed in a side wall 34a of the bottom recess 34. The through hole 34b is formed in the side wall 3
4a so that the hot plate 3
5 covers the through-hole 34b, so that it cannot be seen from the outside. By keeping the height of the product low, operability and design can be improved.

A plug receiver 71 for connecting a magnet plug 70 is provided at a lower portion of the rear side surface of the main body 31. In FIG. 1, 72 is a magnet, 73 is a magnet 7
2 is a magnetic material adsorbed on By using the magnetic plug 70 in the rice cooker, operability and design can be improved.

On the front side surface of the main body 31, as shown in FIG.
An operation unit 74 is provided. The operation unit 74 includes an operation panel 75, a panel cover 76, a key sheet 77, and a board 78, as shown in FIG. Operation panel 7
5 and the panel cover 76 are fixed with mounting screws. FIG.
In 1, 80 is the screw hole. The board 78 is fixed to the boss 81 of the operation panel 75 with mounting screws. When the operation panel 75 and the panel cover 76 are fixed, as shown in FIG.
A groove 84 is formed at the fitting portion. FIG.
A mounting hole 85 that fits and locks into the groove portion 84 is provided as shown in FIG.
5 and the panel cover 76 are inserted, and the operation panel 7
5 and the panel cover 76 are sandwiched and fixed between the upper ring 42 and the bottom cover 40. With such a structure, the operation section 74 can be fixed very simply and reliably, and the cost can be reduced.

The panel cover 76 is made of a flame-retardant resin such as polypropylene, are adapted to interconnect the terminal portion to the substrate 78 is accommodated in the interior, as shown in FIG. 11, cover
The main body 86 and the cover 87. The connecting portion 88 has a hinge structure. After the board 78 is attached, the board 78 is bent at the connection portion 88, and the board 78 is surrounded by the panel cover 76, so that thermal shielding and waterproof measures can be taken. With this hinge structure, it is possible to achieve simplification of components, costs, shorten the assembly time. The key sheet 77 is attached to the operation panel 75.

In FIG. 11, reference numeral 90 denotes a switch disposed on the operation panel 75 corresponding to the cooking reservation, rice cooking, and heat keeping / cancelling operation sections in the key sheet of FIG.
As shown in FIGS. 12 to 14, an operation rod 91 for controlling the wiring portion of the board 78 protrudes. 12 to FIG.
Reference numeral 92 denotes an engagement claw for locking the cover 87 of the panel cover 76 to the cover main body 86.

When the lid is closed, the flange 3 of the inner container 32 is closed.
2a and inner lid 49 are strongly pressed against each other, and the heat of inner container 32 is transferred to inner lid 4
9 so that the inner lid 49 is not exposed to dew, so that the dew holder is abolished. However, even if the inner lid 49 is exposed to the dew, the hinge portion 4 of the upper ring 42
As shown in FIG. 19, the dew receiving portion of the upper ring 42 is formed as an inclined surface 94 so as to guide the dew dropped on the base of 4 to the wide portion of the dew receiving portion 42a of the upper ring 42, and consideration is given to easy cleaning. doing.

It should be noted that the present invention is not limited to the above-described embodiment, and it goes without saying that many modifications and changes can be made to the above-described embodiment within the scope of the present invention.

For example, the board 78 of the operating section 74 is disposed on the side of the main body 31 in the above embodiment, but may be disposed on the lower part of the main body as shown in FIG. 23. Is desirably formed of a flame-retardant resin.

[0035]

As apparent from the above description, according to the present invention, by engaging the operation part in the hole wall of the mounting hole of rice cooker body
In addition, since the operation section is sandwiched and fixed between the upper ring and the bottom cover, the operation section can be fixed very simply and reliably.

In the operation section , the panel cover and the operation
By fixing the panel, the gap becomes a groove
Therefore, it is not necessary to form a groove separately, and the structure can be simplified.
And assembly is easy.

Further, since the panel cover is formed of a flame-retardant material, even if the wiring terminals are incompletely inserted into the substrate and heat is generated, flame damage can be minimized.

[Brief description of the drawings]

FIG. 1 is a vertical sectional view of a jar rice cooker showing one embodiment of the present invention.

FIG. 2 is a longitudinal sectional view of the lid assembly.

FIG. 3 is a sectional view of a steam packing.

FIG. 4 is a plan view of the same steam packing.

FIG. 5 is a bottom view of the steam packing.

FIG. 6 is a side view of the steam packing.

FIG. 7 is a plan view of a steam valve.

FIG. 8 is a partially cutaway front view taken along the line AA of FIG. 7;

FIG. 9 is a partially cutaway side view taken along the line BB of FIG. 7;

FIG. 10 is a plan view of a protruding pipe of the steam valve.

FIG. 11 is a front view showing a state before the operation unit is assembled.

FIG. 12 is a sectional view showing a state after the operation unit is assembled.

FIG. 13 is a side cross-sectional view showing a state where the panel cover and the substrate are attached.

FIG. 14 is a side sectional view showing a state before the assembly.

FIG. 15 is a configuration diagram showing an appearance of a rice cooker.

FIG. 16 is a cross-sectional plan view showing a state of attachment between the rice cooker main body and the operation unit.

FIG. 17 is a front view showing an operation portion mounting hole of the rice cooker main body.

FIG. 18 is a plan view of the upper ring of the rice cooker main body.

FIG. 19 is a longitudinal sectional view of the upper ring in the same manner.

FIG. 20 is a side view of the upper ring.

FIG. 21 is a sectional view of a hot plate.

FIG. 22 is a plan view of a hot plate.

FIG. 23 is a sectional view of a conventional rice cooker.

[Explanation of symbols]

 31 rice cooker main body 32 inner container 32a flange 33 outer pot 42 upper ring 43 lid assembly 48 outer lid 49 inner lid 49a opening 51 heat insulating material 56 steam port 57 urging means 58 steam valve 59 space 63 steam hole

──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Sanae Hayashi 22-22, Nagaike-cho, Abeno-ku, Osaka-shi Inside Sharp Co., Ltd. (56) References JP-A 2-18330 (JP, U) JP-A 62-37224 (JP, U) (58) Field surveyed (Int. Cl. ⁶ , DB name) A47J 27/00 103

Claims (3)

(57) [Claims] A rice cooker main body and a fixed upper end of the rice cooker main body.
Specified upper ring and bottom cover that covers the bottom of the rice cooker body
And an operation unit for controlling the heating of the inner container, etc.
The rice cooker body has a mounting hole for an operation unit, and
The left and right ends are engaged with the hole walls of the mounting hole,
A rice cooker characterized in that both ends are sandwiched and fixed between the upper ring and the bottom cover . 2. An operation unit comprising: an operation panel; and a panel cover which supports the operation panel and protects a board on which control electronic components are mounted.
The panel cover is formed of a flame-retardant material,
The rice cooker according to claim 1 , wherein a terminal portion for wiring to the substrate is housed inside the panel cover. 3. An operation unit, comprising: an operation panel;
Panel cover to protect the board on which the electronic components for control are mounted
Having a groove between the panel cover and the operation panel.
Wherein the hole wall of the mounting hole is engaged with the groove.
The rice cooker according to claim 1, wherein