KR101158857B1 - mode switching apparatus of electric rice cooker - Google Patents

Abstract

In order to improve the stability and the quality of the product, the present invention provides a support device provided on an inner surface of an outer case of an electric heat-insulating rice cooker provided with a cooking mode button and a keep-warm mode button exposed on the outside thereof. A button lever connected to the support member and adapted to rotate in conjunction with the pressing of the cooking mode button; A switch lever supporter fixed to a lower end portion of the inner case of the thermosensitive cooker; A switch lever arranged to be selectively in contact with the lower end of the button lever and the keep-warm mode button, the switch lever being rotatably connected to the switch lever support; And a holder device coupled to one side of the outer case and one end of the switch lever support.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric rice cooker,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a button mode switching device for an electric heat-preserving rice cooker, and more particularly, .

Generally, an electric heat-preserving rice cooker is brought into contact with a heat plate having a heater incorporated therein at the bottom of an inner pot containing food such as rice, and the food is cooked by heating the heat plate. At this time, a central portion of the heating plate is provided with a magnetic switch which is in close contact with the bottom surface of the inner pot and reacts with the surface temperature of the inner pot.

Specifically, the above-described process is performed by a mode switching device that switches the cooking mode and the keep-warm mode provided in the outer case of the thermosensitive cooker. When the cooking mode button is depressed, . And the magnet switch provided on the heat plate is brought into contact with the rotation of the lever so that the food is cooked.

When the keep warm mode button is pressed, the magnet switch is separated by the rotation of the lever, and the lever contacts the switch of the control unit. In this way, the control unit is provided with a constant signal and controls to switch from the cooking mode to the keep-warm mode according to the signal.

In this case, the rotation of the lever for mode switching is performed by a turning rod provided in the panel unit in a mode switching device for an electric rice cooker of Korean Patent No. 10-0765337 so as to be able to rotate by a certain radius, And the lever is provided so as to be able to rotate the lever. Accordingly, although the pushing force of the button is relatively small and the operability of the lever is increased, there is a problem in that it is difficult to maintain the operation interval and secure stability due to external impacts and assembly errors.

SUMMARY OF THE INVENTION In order to solve the above problems, the present invention provides a button mode switching device for an electric heat-preserving rice cooker having a support device for maintaining a gap between mode switching devices, thereby improving the stability and quality of the product do.

In order to solve the above problems, the present invention provides a rice cooker comprising: a support member provided on an inner surface of an outer case of an electric heat-insulating rice cooker provided with a cooking mode button and a keep-warm mode button exposed on the outside; A button lever connected to the support member and adapted to rotate in conjunction with the pressing of the cooking mode button; A switch lever supporter fixed to a lower end portion of the inner case of the thermosensitive cooker; A switch lever arranged to be selectively in contact with the lower end of the button lever and the keep-warm mode button, the switch lever being rotatably connected to the switch lever support; And a holder device coupled to one side of the outer case and one end of the switch lever support.

Preferably, the outer case includes an outer tube and a panel portion, and the panel portion is coupled to one end of the holder device in a restricting groove portion formed at a lower end portion thereof.

Preferably, one end of the switch lever is disposed between the button lever and the keep-warm mode button, and the other end of the switch lever is connected to a magnetic switch provided at the lower end of the inner case.

The support member may include an extension supporting portion connected to the button lever and extending from both sides in the longitudinal direction of the button lever to maintain a predetermined distance from the inner case.

Through the above-mentioned solution, the button mode switching device of the thermosensitive rice cooker of the present invention provides the following effects.

First, the button lever and the support member are fixedly coupled to the panel portion, and the panel portion and the switch lever support are fixed by the holder device, so that even when the external impact applied to the product and the assembly error occurring during assembly are always constant, . As a result, the safety of the product and the reliability of the quality can be remarkably improved.

Secondly, since the button lever is coupled to the panel portion provided with the button, not the structure that rotates by being coupled with the inner case, the pressing force of the button is reduced, so that the reaction of the button lever and the switch lever can be performed quickly. Therefore, the reactivity and the production of the product can be remarkably improved.

1 is a perspective view illustrating a configuration of a button mode switching device of a thermosensitive rice cooker according to a preferred embodiment of the present invention.
FIG. 2 is a perspective view illustrating a panel unit of a thermosensitive rice cooker according to a preferred embodiment of the present invention. FIG.
3 is a cross-sectional view illustrating an operation of switching the cooking mode of the thermosensible rice cooker according to a preferred embodiment of the present invention.
4 is a cross-sectional view illustrating the operation of switching the keep warm mode of the thermosensitive cooker according to the preferred embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a button mode switching device of a thermosensitive cooker according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a perspective view illustrating the configuration of a button mode switching device of an electric heat-insulating rice cooker according to a preferred embodiment of the present invention.

1, the button mode switching device of the thermosensitive cooker 1 according to the present invention includes a support member 29, a button lever 31, a switch lever 33, a switch lever support 35, Device 37 as shown in FIG.

Here, the support member 29 is provided on the inner surface of the outer case 19 of the thermo-sensitive rice cooker 1 having the cooking mode button and the heating mode button exposed on its outer side, (29), and is rotated in conjunction with the pressing of the cooking mode button.

In detail, the outer case 19 includes an outer cylinder 15 and a panel unit 17. The panel unit 17 will now be described with reference to FIG.

2 is a perspective view illustrating a panel unit of an electric heat-insulating rice cooker according to a preferred embodiment of the present invention.

1 and 2, the panel unit 17 includes the support member 29 and the button lever 31, and the cooking mode button 23, the keep mode button 25, And a restricting groove portion 37a.

The support member 29 is connected to the button lever 31 and extends to both sides in the longitudinal direction of the button lever 31 so as to be spaced apart from the inner case 13 of the rice cooker 1 And an extended support portion 29a. The extended support portion 29a protects the button lever 31 from an external impact applied to the thermo-sensitive rice cooker 1 and maintains the operation interval between the mode switching devices to ensure the stability of the product.

The button lever 31 is rotatably fixed to the support member 29 and is rotated by a pressing operation of the cooking mode button 23. The switch lever 33 is connected to the button lever 31 And is rotatably disposed in contact with the lower end of the button lever 31 in accordance with the rotation. The switch lever 33 is preferably disposed between the lower end of the button lever 31 and the inserting mode button 25 so as to be rotatable by the pressing force of the inserting mode button 25. [

It is preferable that the other end of the switch lever 33 is connected to a magnetic switch provided at the lower end of the inner case 13. That is, the switch lever 33 rotates in conjunction with the cooking mode button 23, the button lever 31, and the keep-warm mode button 25 to contact and separate the magnetic switch, ) Is switched to the cooking mode and the keep warm mode. In addition, a spring is provided inside the magnetic switch, and the switch lever 33 can be rotated by the elastic force of the spring.

Preferably, the magnetic switch is disposed at a lower end of the inner case 13, and is operated at a lower end of the inner case 13 and a through hole 45 of the heat plate, which is coupled to the heat plate. In detail, the inside of the magnetic switch operates by contacting and separating metal objects such as ferrite and the magnet from each other. The ferrite is fixed to the upper part of the magnetic switch and contacts the inner pot. The magnet is connected to the rod So as to move up and down.

The switch lever 33 is rotatably connected to a switch lever support 35 fixed to the lower end of the inner case 13. [ In detail, the switch lever support 35 is fixed to the lower end of the inner case 13, and surrounds the switch lever 33 at a predetermined interval. The switch lever 33 includes a pivotally connected pivot lever . Here, the switch lever support 35 may be fixed to the lower end of the inner case 13, but the fixing position may be changed according to the assembly process.

The holder unit 37 is coupled to one end of the switch lever support 35 and one side of the outer case 19. One end of the holder device 37 is fixedly coupled to the switch lever support 35 and the other end of the holder device 37 is connected to the restricting groove 37a formed at the lower end of the panel part 17 included in the outer case 19. [ As shown in Fig.

Here, it is preferable that the other end of the holder device 37 inserted in the restricting groove part 37a is spaced apart from the restricting groove part 37a at a predetermined interval. Accordingly, a constant operation distance is maintained between the components of the mode switching device, such as an external impact applied to the thermo-sensitive rice cooker 1, so that a direct impact may not be applied to the mode switching device. The holder unit 37 may be coupled to the lower end of the inner case 13.

Furthermore, it is preferable that a ring-shaped ring case 21 is provided along the circumferential direction between the outer case 19 and the inner case 13. That is, a ring-shaped ring case 21, which corresponds to the interval between the upper end of the inner surface of the outer case 19 and the upper end of the outer surface of the inner case 13, may be provided along the circumferential direction. Thus, the inner pot inserted into the inner case 13 can be protected from an external impact or the like of the thermo-sensitive rice cooker 1, and the operation distance of each component of the mode switching device can be maintained. Here, the ring case 21 may be integrated with the outer case 19.

The operation of the rice cooker 1 will be described with reference to FIGS. 3 and 4. FIG.

FIG. 3 is a cross-sectional view illustrating an operation of switching the cooking mode of the rice cooker according to the preferred embodiment of the present invention, and FIG. 4 is a cross-sectional view illustrating an operation of switching the rice cooker in the rice cooker according to the preferred embodiment of the present invention.

3 and 4, when the cooking mode button 23 is exposed on the outer surface of the outer case 19, the cooking mode button 23 is fixed to the inner case 19 so as to be rotatable The upper end of the button lever 31 is pressed. Here, the outer case 19 includes the outer tube 15 and the panel unit 17, and the cooking mode button 23 and the button lever 31 are provided in the panel unit 17, It is preferable that the cooking mode button 23 is elastically supported by the button spring 27.

One end of the switch lever 33 is brought into contact with the lower end of the button lever 31 by the rotation of the button lever 31. Here, when one end of the switch lever 33 is rotated by the pressing force of the cooking mode button 23 and the rotation of the button lever 31, the other end connected to the rod 41c of the magnetic switch 41, The ferrite 41a and the magnet 41b are brought into contact with each other by activating the magnetic switch 41. [

Thereby, cooking of the electric heat-preserving rice cooker 1 is started. The switch lever 33 is kept separated from the control switch 39 coupled to one end of the switch lever support 35. The control switch 39 is connected to the power supply connection part 51, (47) is maintained.

The magnetic switch 41 connected to the switch lever 33 is in contact with the lower end of the inner case 13 and the through hole 45 formed at the central portion of the heat plate, so that the switch lever 33 and the magnetic switch 41, It is possible to prevent a malfunction caused by the impact of the motor.

On the other hand, when the cooking is completed, the temperature of the inner pot 11 rises, and the temperature at this time weakens the magnetic force of the magnetic switch 41. Then, the magnet 41b is separated from the ferrite 41a by the weakened magnetic force.

The switch lever 33 connected to the magnetic switch 41 is lowered and brought into contact with the control switch so that the control switch 39 contacts the power connection unit 51 and the thermal insulation circuit unit 49, .

On the other hand, when the user desires to switch to the keep-warm mode arbitrarily during cooking, the keep-warm mode button 25 presses one end of the switch lever 33 when the keep-warm mode button 25 is pressed. It is preferable that the keep-warm mode button 25 is elastically supported by the button spring 27 like the cooking mode button 23.

The other end of the switch lever 33 connected to the magnetic switch 41 is lowered by the rotation of the switch lever 33, and the magnetic switch 41 is separated from the other end. Therefore, the lowering switch lever 33 makes contact with the control switch 39 to switch the cooking mode to the warm-keeping mode.

The mode switching apparatus of the present invention comprises a support member 29 including extension supports 29a on both sides of the button lever 29, a switch lever support 35, And a holder unit 37 for connecting and connecting the panel unit 17 with each other. Therefore, it is possible to protect each mode switching device from an external impact, and to maintain a constant operation interval between the mode switching devices even in an assembly error occurring at the time of assembly. Therefore, the reliability of the product and the reliability of the quality can be remarkably improved.

As described above, the present invention is not limited to the above-described embodiments, and variations and modifications may be made by those skilled in the art without departing from the scope of the present invention. And such modifications are within the scope of the present invention.

1: Electrothermal cooker 11: Inner pot
13: inner case 15: outer tube
17: panel part 19: outer case
21: Ring case 23: Cook mode button
25: Insulation mode button 27: Button spring
29: Support member 29a:
31: Button lever 33: Switch lever
35: switch lever support 37: holder device
37a: restricting groove portion 39: control switch
41: Magnetic switch 41a: Ferrite
41b: magnet 41c: rod
43: spring 45: through hole
47: Cooking circuit part 49: Insulation circuit part
51: Power connection

Claims (4)

A support member provided on the inner surface of the outer case of the thermosensitive cooker provided with a cooking mode button and a thermosensitive mode button exposed on the outside;
A button lever connected to the support member and adapted to rotate in conjunction with the pressing of the cooking mode button;
A switch lever supporter fixed to a lower end portion of the inner case of the thermosensitive cooker;
A switch lever arranged to be selectively in contact with the lower end of the button lever and the keep-warm mode button, the switch lever being rotatably connected to the switch lever support; And
And a holder device coupled to one side of the outer case and one end of the switch lever support. The method according to claim 1,
Wherein the outer case comprises an outer tube and a panel portion, and the panel portion is coupled to one end of the holder device in a constraining groove portion formed at a lower end portion thereof. The method according to claim 1,
Wherein one end of the switch lever is disposed between the button lever and the keep warm mode button and the other end of the switch lever is connected to a magnetic switch provided at a lower end of the inner case, Mode switching device. The method according to claim 1,
Wherein the support member includes an extension supporting portion connected to the button lever and extending from both sides in the longitudinal direction of the button lever to maintain a predetermined distance from the inner case.

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