KR20010077294A - Top cover locking device for Electric induction heating type rice cooker - Google Patents

Abstract

PURPOSE: A top cover locking device of an electric rice kettle is provided to effectively keep steamed rice warm by firmly locking a top cover with a body case and to prevent breakage of the top cover despite frequent opening of the top cover. CONSTITUTION: A top cover locking device of an electric kettle includes a hook(30) formed in a top cover(14), a slide button(40) mounted in a recessed groove(12a) formed in the front end of a body case(12) and related with the hook, and a movement restraining unit keeping the hook locked by elastically retaining the position of the slide button. As the slide button is elastically supported on a compression spring(50), closed state of the top cover is kept firmly. Upon stopping pressing the slide button after the top cover is opened, the slide button returns to the original position by the repulsive force of the compression spring. Then, a locking protrusion(41) formed in the lower end of the slide button is locked in a locking hole(12b) of the body case and the displacement of the slide button from the body case is restrained. As locking and unlocking of the hook and the slide button are operated horizontal linear movement of the slide button, lifting doesn't occur while the top cover is closed. The slide button slides with the hook when the top cover is closed, and a shock due to the contact of the slide button with the hook is avoided.

Description

Top cover locking device for Electric induction heating type rice cooker

The present invention relates to an electric pressure cooker, and more particularly, to a top cover locking device for an electric pressure cooker to maintain the closed state of the top cover more firmly.

In general, the electric pressure cooker to perform the cooking operation using the electricity as a heating source, to maintain the inside of the oven at a high pressure to achieve a cooking process quickly by increasing the heating temperature at normal pressure, as shown in Figure 1 10, a main body case 12 on which the oven 10 is seated, a top cover 14 for opening and closing the main body case 12, various electric devices for heating the oven 10, The steam discharge valve 16 for regulating the pressure in the oven 10 is comprised.

The electric device comprises a working coil (not shown) for generating an induction current during cooking, and a heater (not shown) for relatively weak heat generation during warming.

As described above, according to the electric pressure cooker, the eddy current is induced in the oven 10 by the working coil, and the cooking operation is performed by heating the oven 10 due to the eddy current. In the cooking process, the top cover 14 is In close contact with the upper end of the oven 10, since the steam discharge valve 16 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 is stopped, and after the steaming process is finished, the steam discharge valve 16 is operated. 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 10 is heated to a constant temperature is a thermal insulation process is in progress.

On the other hand, in such an electric pressure cooker, the top cover 14 receives a rotational force upwardly by a hinge spring (not shown) in a state in which one end thereof is rotatably hinged to the main body case 12, and a locking device. The other end thereof is attached to the main body case 12 so as to selectively engage / release.

The locking device is a release button (20) rotatably mounted to the front end of the main body case 12, as shown in Figure 2, and is attached to the front end of the top cover 14, the release button 20 The hook 22 is separably separable, and the release button 20 is composed of an elastic member for applying an elastic force to maintain an appropriate angle.

Here, the hook 22 is formed in a shape in which the tip is gently bent upwards, the release button 20 is bent at approximately the middle portion so that the cross section is' ?? It is a structure in which the tip is bent at an angle corresponding to the tip of the hook 22, and is rotatably mounted to the main body case 12 through the boss portion 201 configured in the longitudinal center axis.

In addition, the elastic members are positioned above and below the boss portion 201 of the release button 20, respectively, to the upper and lower tension springs 23 and 24 attached between the tip of the main body case 12 and the release button 20. It is composed.

According to the conventional top cover locking device as described above, while the hook 22 is caught on the upper end of the release button 20, the upper end of the release button 20 is moved toward the hook 22 by the upper tension spring 23. Since the pull button 20 is not rotated, the release button 20 is engaged with the hook 22 so that the top cover 12 remains closed. At this time, the lower tension spring 24 is maintained in a no-load state not subjected to the tensile force.

In addition, when opening the top cover 14, by pressing down the outer side of the release button 20, the tension of the upper tension spring 23 is overcome and the release button 20 is rotated to rotate the hook 22 and the release button ( The binding state of 20) is released. In this case, the top cover 14 is automatically opened by being rotated upward by the rotational force of the hinge spring.

On the contrary, when the top cover 14 is closed, the top cover 14 only needs to be pushed down. In this case, the upper end of the release button 20 is pressed against the tip of the hook 22 and pressed down to rotate. Then, the hook 22 is again engaged with the release button 20 to keep the top cover 14 closed. When the upper end of the release button 20 is rotated downward by the pressing of the hook 22, the lower tension spring 24 is tensioned, so that the release button 20 is rotated to its original position by the repulsive force.

Therefore, according to the related art, the top cover 14 is opened by a simple operation of pressing the release button 20, and the top cover 14 can be closed only by pressing the open top cover 14 downward. The top cover 14 can be easily opened and closed.

For reference, the locking device is usually for binding the top cover 14 and the main body case 12, and is provided with a binding device for closely contacting the top cover 14 and the oven 10 separately. The binding device includes a plurality of hook hooks 18 (see FIG. 1) mounted on the top cover 14 and caught on the rim of the oven 10, and have strong internal surfaces of the oven 10 and the top cover 14. By keeping in close contact with each other, the pressure is maintained in the oven 10 during the cooking process.

According to the related art as described above, when the top cover 14 is closed, the top cover 14 is pressed with a relatively strong force exceeding the elastic force of the hinge spring, so that if the top cover 14 is frequently opened and closed, the hook ( Problems such as damage to the boss 201 due to repeated impact generated when the 22 and the release button 20 are in contact with each other occur.

In addition, according to the related art, since the release button 20 is slightly lifted by the hook 22 in the rotating structure of the release button 20 when the top cover 14 is closed, the top cover 14 is consequently. It is also not in close contact with the main body case 12, but is a little excited, in this way, if the top cover 14 is excited and a gap is formed between the main body case 12, the inside of the oven 10 during the warming operation of the cooker Since the warmth is released to the outside through the gap, there is a problem that the operation stability of the rice cooker is reduced, such as the efficient warming action is not made.

The present invention has been made to solve the above-described conventional problems, by making the top cover is in close contact with the main body case in a solid state not only to make the insulation operation of the rice cooker more efficiently, but also to open and close the top cover repeatedly It is an object of the present invention to provide a top cover locking device for an electric pressure cooker of a rigid structure that is not easily broken.

1 is a perspective view showing the appearance of a general electric pressure cooker.

Figure 2 is a cross-sectional view showing the structure of the top cover locking device of the electric pressure cooker according to the prior art.

3 is a cross-sectional view showing the structure of the top cover locking device of the electric pressure cooker according to the embodiment of the present invention.

Figure 4 is a perspective view showing a modified structure of the slide button applied to the top cover locking device according to an embodiment of the present invention.

<Explanation of symbols for the main parts of the drawings>

10: oven 12: body case

12a: recess 12b: locking hole

14: top cover 30: hook

40: slide button 40a: through hole

41: engaging projection 42: elastic piece

The electric pressure cooker provided to achieve the above object is located at the tip of the top cover, protrudes downward, the tip of the hook is bent in the horizontal direction; A slide button mounted in the groove portion formed at the front end of the main body case so as to be linearly reciprocated in a horizontal direction and engaged / released with the front end of the hook according to its position; Resilient fixing of the position of the slide button comprises a movement limiting means for selectively holding the hook state.

Here, the movement limiting means is an elastic member for applying an elastic repulsive force to the outer side of the main body case with respect to the slide button, and the locking projection protruding from the lower surface of the slide button to catch the locking groove formed in the main body case to prevent the release of the slide button Is done.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to FIGS. 3 and 4, and like reference numerals refer to like elements.

Top cover locking device according to an embodiment of the present invention in the horizontal direction in the hook 30 provided in the top cover 14, and the recessed portion (12a) formed at the tip of the main body case 12 as shown in FIG. Restriction movement means for selectively retaining the state of engagement with the hook 30 by elastically fixing the position of the slide button 40 and the slide button 40 and the hook 30 is coupled to the linear reciprocating movement It is made, including.

Here, the hook 30 is protruded downward from one side end of the top cover 14, the front end is made of a form bent in the horizontal direction, the front end of the bent tip of the hook 30 is inclined at a predetermined angle It is formed into an inclined surface. The slide button 40 is formed in the form of a panel having a through hole 40a through which the tip of the hook 30 penetrates in the middle. One side edge of the through hole 40a is inclined at the tip of the hook 30. It is configured in a form inclined at a corresponding angle.

And, the movement limiting means is an elastic member for applying an elastic repulsive force to the outer side of the main body case 12 with respect to the slide button 40, and the engaging groove formed in the main body case 12 protruding from the lower surface of the slide button 40 It is made of a locking projection 41 for preventing the slide button 40 from being separated by being caught by (12b), the elastic member is a compression spring (50) mounted to the rear of the slide button 40 in the groove portion (12a) ), Or as shown in Figure 4 consists of a pair of elastic pieces 42 protruding from the rear of the slide button 40.

Referring to the operation of the top cover locking device according to the present embodiment configured as described above are as follows.

First, in the state where the top cover 14 is closed, the hook 30 is introduced into the recess 12a of the body case 12 so that the top end thereof is engaged with the slide button 40 so that the top cover 14 is not opened. , The slide button 40 is mounted so as to move only in the horizontal direction perpendicular to the vertical direction in which the hook 30 is moved, and is receiving elastic support force to one side by the action of the compression spring 50, the hook ( The position is not changed by the rotational force of the hinge spring applied through 30). Therefore, the closed state of the top cover 14 is firmly maintained.

In addition, when the top cover 14 is opened, the binding state between the hook 30 and the slide button 40 is released by pressing the slide button 40 to move inward of the recess 12a. The top cover 14 is rotated and opened by the rotational force of the hinge spring.

When the top cover 14 is opened and then the slide button 40 stops operating, the slide button 40 returns to its original position by the elastic repulsive force of the compression spring 50. At this time, the slide button 40 The locking projections 41 formed at the lower end thereof are caught in the locking holes 12b of the main body case 12 and the movement thereof is restricted so that they are not removed from the main body case 12.

When the top cover 14 is closed, as in the prior art, the top cover 14 is simply pushed down to rotate. At this time, the inclined surface of the tip of the hook 30 and the edge of the through hole 40a formed in the slide button 40 are rotated. As the hook 30 descends while the inclined surfaces are in contact with each other, the slide button 40 is pushed down so as to compress the compression spring 50 and move slightly inwardly of the recess 12a.

When the tip of the hook 30 passes through the through hole 40a completely, the slide button 40 is moved back to its original position by the elastic repulsive action of the compression spring 50, thereby causing the hook 30 to slide. The button 40 is engaged.

On the other hand, even when the elastic member is composed of a pair of elastic pieces 42 protruding from the rear of the slide button 40 instead of the compression spring 50, the action is the same as the compression spring (50).

As described above, according to the exemplary embodiment of the present invention, the top cover 14 is closed because the binding / release operation of the hook 30 and the slide button 40 is performed by the horizontal linear movement of the slide button 40. The lifting phenomenon does not occur, and since the hook 30 and the slide button 40 are in sliding contact in the process of closing the top cover 14, a strong impact does not occur in the contact process.

According to the top cover locking device of the electric pressure cooker according to the present invention, since the binding / release operation of the hook and the slide button is performed by the horizontal linear movement of the slide button, the top cover is completely closed with the main body case of the rice cooker. The warmth in the oven is effectively preserved during warm operation, and the hook and slide button are in sliding contact during the closing of the top cover, so that strong impact does not occur during the contacting process. do.

Claims (4)

A hook positioned at the tip of the top cover and protruding downward, the tip being bent in a horizontal direction; A slide button mounted in the groove portion formed at the front end of the main body case so as to be linearly reciprocated in a horizontal direction and engaged / released with the front end of the hook according to its position; Restriction means for selectively retaining the state of engagement with the hook by elastically fixing the position of the slide button Top cover locking device of the electric pressure cooker comprising a. The method of claim 1, wherein the movement limiting means An elastic member for applying an elastic repulsive force to the outside of the main body case with respect to the slide button; A locking protrusion protruding from the lower surface of the slide button to catch a locking groove formed in the main body case to prevent the slide button from being separated. Top cover locking device of an electric pressure cooker, characterized in that consisting of. The method of claim 2, wherein the elastic member Top cover locking device of the electric pressure cooker, characterized in that consisting of a compression spring mounted to the rear of the slide button in the groove. The method of claim 2, wherein the elastic member Top cover locking device of the electric pressure cooker, characterized in that consisting of elastic pieces protruding from the rear of the slide button toward the inner surface side of the groove.