KR20040039964A - Electrical cooker - Google Patents

Abstract

PURPOSE: An electric rice pot is provided to prevent over lifting when a lid of the rice pot is open. CONSTITUTION: An electric rice pot includes a damping device to prevent a lid of the rice pot from opening suddenly with an opening spring. The damping device has a damping plate(60) and the damping spring. The damping spring has a friction guide surface(312), a compressive plane(311) and a hanging portion(315). The damping plate is formed to a rear end portion of the lid. The hanging portion is installed to a rear portion of the damping plate. The friction guide surface is formed to the damping spring to give friction force by contacting the damping plate when the lid rotates. The compressed plane is extended from the friction guide surface to give compressive force to the damping plate. The hanging portion is extended from a lower end of the friction guide surface to be hung to a hinge shaft(23), folded in an L shape. Thereby, over lifting of the lid of the rice pot is prevented by friction force and compressive force.

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, and the cooking is performed. 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 are diagrams showing the structure of one 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 perspective view of the damping spring of FIG.

6 to 8 are front sectional views showing the configuration of the damping means from the closed state of the lid of FIG. 4 to the fully opened state;

Figure 6 is a front sectional view in the closed state

7 is a sectional front view in a partly open state;

8 is a front sectional view in a fully open state;

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

14: lid 21: hinge bracket

23: hinge axis 30: hinge spring

50: support bracket 60: damping plate

61: compressed vertical surface 100: cushion member

311: compression plane 312: friction guide surface

315: catch

The present invention, in order to achieve the object as described above, 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 rice cooker body, the elastic force to open the lid An electric rice cooker comprising an opening spring to be applied and a damping means for preventing the lid from being suddenly opened by the opening spring, wherein the damping means is installed at a rear end of the damping plate and a damping plate formed at a rear end of the lid. And, as the lid rotates, a friction guide curved surface formed to be in contact with the rotating damping plate to apply a friction force, and a compression plane extending to the friction guide curved surface and applying a compressive force to the damping plate, and It is provided with a locking portion extending to the lower end of the friction guide curved surface to be caught in the hinge axis, bent in an L shape It provides an electric rice cooker comprising a damping spring of the bending panel shape.

In addition, the damping spring is preferably made of spring steel.

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 an 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 a cushion of Figure 4 A perspective view of the member.

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 and the main body 11 and the inner case 15 in which a hinge hole 26 is formed to fit the hinge shaft 23. A hinge bracket 21 extending from the rear end of the hinge spring, a hinge spring 30 to which the through hole of the torsion portion 31 is fitted into the hinge shaft 23, and a pivoting end 33 of the hinge spring 30. ) Includes a fixing groove 24 for fixing the lid 14 to the lid 14 to rotate together with the lid 14, and a body fixing part (not shown) for fixing the fixing end 32 of the hinge spring to the body. It is composed.

The damping means is adjacent to the damping plate to be in contact with the damping plate 60 and the damping plate 60 installed vertically at the rear end of the inner case 15 and the lid 16 as the lid 16 rotates. Including a damping spring 300 and the support bracket 50 is bolted to the main body 11 in contact with the support surface 313 of the damping spring 300 to support the damping spring 300 It is composed.

The damping plate 60 is composed of a compression vertical surface 61 in contact with the damping spring 300 and a fixing rib 62 for fixing the damping plate 60 to the inner case 15.

As shown in FIG. 5, the damping spring 300 is made of spring steel and is a leaf spring formed by bending. The damping force is influenced by the elastic force of the damping spring 300.

The damping spring 300 constitutes a support surface 313 in contact with the support bracket 50, a coupling surface 314 facing the support surface 313, and an upper surface thereof, and when the lid 14 is completely opened. Compression plane 311 in contact with the damping plate 60 to apply a compressive force, and a friction guide surface for applying a friction force to the damping plate 60 consists of a curved surface between the coupling surface 314 and the compression plane 311 ( 312 and a locking portion 315 extending from a lower end of the friction guide curved surface 312 so as to be caught by the hinge shaft 23 and bent into an L shape.

The hinge coupler 20 and the damping means are assembled as follows.

The through hole of the hinge spring 30, the hinge hole of the hinge bracket 21, and the engaging portion 315 are positioned side by side, and the hinge shaft is installed through the through hole, the hinge hole and the engaging portion 315. .

The end of the hinge spring 30 rotational end 33 is fixed to the fixing groove 24, the fixing end 32 of the hinge spring 30 is fixed to the body fixing portion (not shown).

In addition, the damping spring 300 is installed between the two hinge spring 30 so that the engaging portion 315 is fitted between the hinge shaft 23 and the lid 14, the damping spring 300 To support the support bracket 50 is fixed to the body to support the support surface 313 of the damping spring (300).

Hereinafter, the operation of the embodiment of the present invention will be described.

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.

6 to 8 are front cross-sectional views showing the configuration of the damping means from the closed state of the lid of Figure 4 to the fully open state, Figure 6 is a front sectional view in a closed state, Figure 7 is a front sectional view in a partially open state 8 is a front sectional view in a fully open state.

As shown in FIG. 6, in the closed state of the lid, the damping plate 60 and the damping spring 300 are spaced apart without contact.

However, when the lid 14 rotates to some extent, the compression vertical surface 61 of the damping plate 60 and the friction guide curved surface 312 come into contact with each other.

In addition, the compression vertical surface 61 is a sliding motion in the state in which a compression force is applied to the friction guide curved surface 312. Accordingly, the friction guide curved surface 312 exerts a frictional force on the compression vertical surface 61 in a direction opposite to the movement direction of the lid 14.

The friction force acts as a damping force for the rotational movement of the lid 14.

In addition, the load applied by the compression vertical surface 61 to the friction guide curved surface 312 is transmitted to the hinge shaft (23). Therefore, since the amount of the load transmitted to the support bracket 50 decreases, the deformation of the support bracket 50 can be prevented.

When the lid 14 is completely rotated, the compression vertical plane 61 of the damping plate 60 presses the compression plane 311, and in response, the compression plane 311 is the compression vertical plane 61. Compressing force.

Therefore, the compressive force acts as a damping force for the rotational movement of the lid 114.

Further, the compression plane 311 is the compression vertical plane 61 according to the center of the compression force applied by the compression vertical plane 61 to the compression plane 311 and the distance "L" between the friction guide curved surface 312. The amount of compressive force applied to) varies.

In other words, the smaller the "L", the larger the compressive force, and the opposite, the smaller the compressive force.

Accordingly, by adjusting "L", the damping force can be adjusted.

Therefore, the lid can be opened more smoothly due to the action of the friction force and the compression force.

As described above, the present invention includes a damping means at the rear end of the lid, thereby preventing the occurrence of overlifting when the lid of the rice cooker is opened.

In addition, the damping means is provided with a friction guide curved surface 312, by applying a friction force from the initial stage of the rotation of the lid to attenuate the rotational force and the rotational inertia force, thereby reducing the impact force as compared to damping at the last stage of the rotation, damping means And, wear of the member in contact with the damping means can be reduced.

In addition, the damping spring 300 may adjust the damping force by changing the position where the compression vertical plane 60 exerts a compression force on the compression plane 311.

In addition, the damping spring 300 may prevent the deformation of the support bracket 50 by transmitting a load applied from the lid 14 to the hinge shaft 23.

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.

Claims (2)

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 rice cooker body, an opening spring for applying an elastic force to open the lid, and the lid by the opening spring In the rice cooker comprising a damping means for preventing the opening of the sudden, the damping means is A damping plate formed at a rear end of the lid; It is installed at the rear of the damping plate, and as the lid rotates, the friction guide surface is formed so as to apply a friction force in contact with the rotating damping plate, and is formed to extend the friction guide surface and apply a compressive force to the damping plate A bending panel-shaped damping spring having a compression plane capable of engaging with the hinge axis, and a latching portion extending from a lower end of the friction guide curved surface so as to be caught by the hinge axis, and being bent in an L shape; Electric rice cooker comprising a. The method of claim 1, The damping spring is an electric rice cooker, characterized in that consisting of spring steel.