KR20040039965A - Electrical cooker - Google Patents

Abstract

PURPOSE: An electric rice pot is provided to prevent over lifting when a lid is open and to adjust damping force by adjusting size of a vent portion and volume of a cylinder with a damping device. CONSTITUTION: An electric rice pot includes a hinge shaft, a hinge spring and a damping device. The damping device includes a cylinder(412), a piston(413), a vent portion(414) and a cam device(420). The cylinder is fixed to a main body(11) of the electric rice pot. The piston is combined to the cylinder to be moved reciprocally. The cam device converts rotary motion for the hinge shaft to reciprocating motion of the piston. Thereby, over lifting is prevented when a lid(14) is open. Damping force is adjusted easily by adjusting size of the vent portion and volume of the cylinder.

Description

Rice cooker {ELECTRICAL COOKER}

The present invention relates to an electric rice cooker, and more particularly, to a lid hinge mechanism of an electric rice cooker which can prevent the lid from being excessively over by reducing an impact generated in the process of opening the lid.

An electric rice cooker performs cooking using electricity as a heating source, and maintains the inside of the oven at a high pressure to achieve a cooking process quickly by making the heating temperature higher than at normal atmospheric pressure, as shown in FIG. And a main body case 12 on which the oven 10 is mounted, and a lid 14 for opening and closing the main body case 12.

Here, the main body case 12 is provided with an electric device for heating the oven 10, the lid 14 is provided with a steam discharge valve (not shown) for controlling the pressure in the oven (10). The electric device is composed of a working coil 16 for generating an induction current during cooking, a heater (not shown) for relatively weak heat generation during warming, and the like.

As described above, according to the electric rice cooker, the eddy current is induced in the oven 10 by the working coil 16, and the oven 10 is heated by the eddy current, thereby causing the cooking operation. Since the inner part is in close contact with the upper end of the oven 10 and the steam discharge valve is kept closed, when the rice boils, the pressure inside the oven 10 becomes higher than the normal air pressure due to steam generation.

In addition, as the pressure increases, the temperature of the rice also rises to a temperature higher than the boiling point (100 ° C.) at normal pressure, so the rice grains ripen quickly. When the cooking process is finished, the steaming process for maintaining the pressure in the oven 10 is maintained for a predetermined time while the heating by the working coil 16 is stopped, the steam discharge valve is operated after the steaming process is finished By the steam inside the oven 10 is discharged to the outside by the heater in the state in which the pressure is lowered by the heater to keep the oven 10 is heated to a constant temperature is in progress.

On the other hand, in such an electric rice cooker, the lid 14 is mounted in a rotatable structure with one end of the main body case 12 by the hinge mechanism, the hinge mechanism is the main body case 12 to rotate the lid 14 It consists of a hinge bracket 21 to connect to, and a hinge spring 30 to apply an elastic rotational force to the lid (14).

Here, the hinge bracket 21 is a structure formed inside the lid 14, the hinge shaft 23 of one side is hinged to one end of the main body case 12, the lid 14 and the main body case 12 Connect rotatably.

In addition, the hinge spring 30 has a torsional portion 31, as shown in Figure 2, a fixed end 32 that is configured on one side of the torsional portion 31 is inserted and fixed inside the body case 12 and The other end of the torsion portion 31 is composed of a rotational end 33 mounted inside the lid 14, and the torsion portion 31 is fitted to the hinge shaft 23 of the hinge bracket 20. By rotating, the rotational angle around the torsional part 31 is attached so that the opening angle of the lid 14 may be matched.

Referring to the operation of the conventional lid hinge mechanism as described above are as follows.

In the state in which the lid 14 is closed, the torsional stress is applied to the torsion portion 31 by bending the pivoting end 33 of the hinge spring 30 elastically, and the hook (not shown) at the tip of the lid 14 is the main body. The lid 14 is maintained in a closed state by engaging with a binding mechanism (not shown) of the case 12. When the lid 14 is opened, the rotating end is disengaged by the torsional stress of the torsion part 31 when the binding device is released. 33 will lift the lid 14 (indicated by an imaginary line in the drawing).

At this time, when the lid 14 is opened and rotated by a predetermined angle (about 90 °) or more, the hinge bracket 21 is caught on the upper end of the main body case 12, and the tip of the hinge spring 30 is twisted part 31. Due to the change in the torsion angle of the exertion of the elastic support in the opposite direction when opening the lid 14 of the opening operation is stopped.

However, according to the lid hinge mechanism according to the prior art as described above, the hinge spring 30 to lift the lid 14 with a strong force for a smooth opening operation. Therefore, since the opening angle of the lid 14 exceeds a certain value (approximately 90 °), the lid 14 is excessively over the normal opening angle due to the strong rotational inertia force caused by the torsional stress of the hinge spring 30. The so-called over lifting phenomenon is generated.

In addition, according to such an overlifting phenomenon, the lid 14 is recoiled and shakes greatly, causing the front part of the main body case 12 to shake up, resulting in an impact on the entire rice cooker. The problem arises.

The present invention has been made to solve the above problems, an object of the present invention to provide an electric rice cooker to prevent the occurrence of the over-lifting when the lid of the rice cooker.

1 and 2 show the structure of a conventional rice cooker,

1 is a front sectional view of an electric rice cooker

Figure 2 is a perspective view of the hinge spring of Figure 1

3 to 5 show the structure of the first embodiment of the present invention.

3 is a perspective view of an electric rice cooker

4 is a perspective view showing the structure of the "IV" part of FIG.

5 is a schematic view of the damping means of FIG.

FIG. 6 is a diagram showing the structure of a second embodiment of the present invention, wherein the damping means of FIG.

7 and 8 are sectional views showing another possible embodiment of the venting section;

** Description of the symbols for the main parts of the drawings **

14: lid 21: hinge bracket

23: hinge axis 30: hinge spring

412: cylinder 413: piston

414: vent 415: cylinder vent hole

416: piston vent hole 420, 430: cam device

421: Link bar 431: Wheel

432: rack

The present invention, in order to achieve the object as described above, the hinge shaft for hinge-binding the rice cooker body and the lid, the one end is fixed to the lid and the other end is fixed to the electric cooker body, the elastic force to open the lid An electric rice cooker comprising a hinge spring to be applied and a damping means for preventing the lid from being suddenly opened by the hinge spring, wherein the damping means is coupled to the cylinder fixed to the electric cooker body to reciprocate to the cylinder. It provides an electric rice cooker comprising a piston, a vent for allowing air to flow through the cylinder, and a cam device for converting a rotational movement about the hinge axis of the lid into a reciprocating motion of the piston.

In addition, the vent is preferably a cylinder vent hole for venting air inside and outside the cylinder.

On the other hand, the vent may be implemented by a piston vent hole formed on the piston.

And, the cam device is preferably one end is hinged to the lid, the other end is preferably composed of a link bar hinged to the piston.

The cam device may include a rack having a tooth fixed to the piston, and a wheel fixed to the lid and having a tooth formed on an outer circumference thereof so as to be engaged with the rack.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

However, in describing the present invention, a detailed description of known functions or configurations will be omitted in order not to disturb the gist of the present invention.

In addition, the same reference numerals are given to the same and the same components as those described above, and detailed description thereof will be omitted.

3 to 5 are views showing the structure of the first embodiment of the present invention, Figure 3 is a perspective view of the electric rice cooker, Figure 4 is a perspective view showing the structure of the "IV" portion of Figure 3, Figure 5 is Schematic of damping means.

As shown in FIG. 3, the rice cooker includes an electric rice cooker body 11 formed of a main body case 12 and a lid 14 hinged to the main body.

The rear end of the lid 14 is coupled to the main body 11 by a hinge coupling portion 20 and a damping means (not shown).

4 is a configuration diagram of part "IV" of FIG.

The lid consists of an outer case 16 and an inner case 15 coupled to the inner side of the outer case 16.

The hinge coupler 20 has a hinge shaft 23 for hinge coupling the lid 14 and the main body 11 and the inner case in which a hinge hole 26 is formed to fit the hinge shaft 23. Hinge bracket 21 extending from the rear end of the (15), the hinge spring 30 is coupled to the through hole of the torsion portion 31 is fitted to the hinge shaft 23, the rotation of the hinge spring (30) Fixing groove 24 for fixing the end 33 to the lid 14 so as to rotate with the lid 14, and the main body fixing portion for fixing the fixing end 32 of the hinge spring to the main body (not shown) It is configured to include.

5 is a schematic view of the damping means of FIG.

The damping means includes a cylinder 412 fixed to the rice cooker body 11, a piston 413 coupled to the cylinder to reciprocate, and an air vent 414 to allow air to flow through the cylinder. And a cam device 420 for converting the rotational movement about the hinge shaft 23 of the lid 16 into the reciprocating motion of the piston 413.

The cam device 420 includes a cam protrusion 423 formed on the lid 14, the cam protrusion 423, and a link bar 421 that pin-couples the piston 413.

The vent 414 is a cylinder vent hole 415 formed in the bottom surface of the cylinder 412 so as to be ventilated in the space sealed by the cylinder 412 and the piston 413 as shown in FIG. Can be configured.

The operation of the first embodiment will be described below.

In the state in which the lid 14 is closed, the torsional stress is applied to the torsion portion 31 by bending the pivoting end 33 of the hinge spring 30 elastically, and the hook (not shown) at the tip of the lid 14 is the main body. The lid 14 is maintained in a closed state by engaging with a binding mechanism (not shown) of the case 12. When the lid 14 is opened, the rotating end is disengaged by the torsional stress of the torsion part 31 when the binding device is released. 33 will lift the lid 14.

In this case, the cam protrusion 423 rotates with the lid 14, and the link bar 421 moves the piston 413 downward as the cam protrusion 423 rotates. .

As the piston 413 moves, air in the cylinder 412 is discharged through the cylinder vent hole 415. Air resistance generated at this time acts as a damping force of the damping means. Therefore, the lid 14 is prevented from being opened sharply.

In addition, the damping force can be adjusted by adjusting the volume of the vent hole 415 and the cylinder.

FIG. 6 is a diagram showing the structure of the second embodiment of the present invention, and is a schematic diagram of the damping means of FIG.

The damping means includes a cylinder 412 fixed to the rice cooker body 11, a piston 413 coupled to the cylinder to reciprocate, and a vent 414 to allow air to flow through the cylinder. It comprises a cam device 430 for converting the rotational movement about the hinge shaft 23 of the lid 16 to the reciprocating motion of the piston 413.

The cam device 430 is a rod-shaped rack 432 is formed in the teeth fixed to the piston, the wheel 14 is fixed to the lid 14, the wheel formed teeth on the outer circumference to be movable in engagement with the rack 432 431.

The vent 414 is the same as in the first embodiment.

The operation of the second embodiment is the same as that of the first embodiment except that the operation of the piston 413 is driven by the rack 432 and the wheel 431.

7 and 8 show another possible embodiment of the vent.

7 shows a piston vent hole 416 formed on the piston 413 to allow air to flow in a space 417 enclosed by the cylinder 412 and the piston 413.

FIG. 8 is formed such that the outer circumference of the piston 413 can be slightly spaced from the inner wall of the cylinder 417 so that air can flow through the enclosed space 417.

In addition to the configuration of the vent 414 can be formed in a variety of ways, all belong to the scope of the present invention.

Although the preferred embodiments of the present invention have been described above by way of example, the scope of the present invention is not limited to these specific embodiments, and may be appropriately changed within the scope of the claims.

The present invention provides an electric rice cooker to prevent the occurrence of overlifting phenomenon when opening the lid of the rice cooker.

In addition, the damping means can easily adjust the magnitude of the damping force by adjusting the size of the vent and the volume of the cylinder.

Claims (5)

The hinge shaft for hinge coupling the rice cooker body and the lid, the one end is fixed to the lid and the other end is fixed to the electric cooker body, a hinge spring for applying an elastic force to open the lid, and the lid by the hinge spring In the rice cooker comprising a damping means for preventing the opening of the sudden, the damping means is A cylinder fixed to the electric cooker body; A piston coupled to the cylinder to reciprocate; An air vent for allowing air to flow through the cylinder; A cam device for converting a rotational movement about the hinge axis of the lid into a reciprocating motion of the piston; Electric rice cooker comprising a. According to claim 1, wherein the ventilator Electric rice cooker characterized in that the cylinder vent hole for ventilating the air inside and outside the cylinder. According to claim 1, wherein the ventilator Electric rice cooker characterized in that the piston vent hole formed on the piston The cam device according to any one of claims 1 to 3, wherein the cam device is One end is hinged to the lid, the other end is an electric rice cooker comprising a link bar hinged to the piston. The cam device according to any one of claims 1 to 3, wherein the cam device is A rack having teeth fixed to the piston; A wheel fixed to the lid and having teeth formed on an outer circumference thereof so as to be engaged with the rack and moveable; Electric rice cooker comprising a.