KR20030075036A - preventing device for incorrect opening cover in electric cooker - Google Patents

Abstract

PURPOSE: A device for preventing the mis-opening of a cap of an electric rice cooker is provided to prevent the rotation of a locking ring in the opening direction of a cap when the pressure of an inner pot is higher than the atmospheric pressure. CONSTITUTION: A rotation-preventing unit to prevent the rotation of a locking ring(240) in the opening direction of a cap when the internal pressure of an inner pot(110) is higher than the atmospheric pressure is prepared on an edge portion of the inner pot. The rotation-preventing unit is formed by forming a rotation-preventing protrusion(245a) on the upper face of a locking piece(245) of the locking ring and forming an insertion recess(115a) on the bottom face of a flange portion(115) of the inner pot.

Description

Prevent opening device for incorrect opening cover in electric cooker}

The present invention relates to an electric pressure cooker, and more particularly, to prevent the opening of the lid of the electric pressure cooker to prevent the opening of the lid due to carelessness of the user when the pressure inside the inner pot is higher than atmospheric pressure. Relates to a device.

In general, an electric pressure cooker is a device that uses electricity as a heating source and cooks while maintaining the inside at a constant pressure.

Figure 1 is a longitudinal sectional view schematically showing an electric pressure cooker according to the prior art, Figure 2 is an enlarged view of the "A" part of Figure 1, as shown in the figure, the electric pressure cooker is largely the main body 100 and It is composed of a lid 200 for opening and closing the inside of the main body 100.

The main body 100 has an outer case 100a, an inner pot support 120 which is fixed at an inner side of the outer case 100a to open the inner pot 110 inward, and the inner pot support 120 The lower heating plate 130 is installed directly below and supplies heat to the inner pot 110, and is installed while wrapping the side surface of the inner pot support part 120 to supply heat to the circumference of the inner pot 110. 140.

The lid 200 includes a top cover 210 hinged to the outer case 100a constituting the main body 100, an inner cover 220 fixed to the inside of the top cover, and the inner An upper hot plate 230 fixed to the cover 220 and supplying heat to the upper portion of the inner pot 110 constituting the main body 100, and the upper end portion is exposed to the outside of the top cover 210 and the upper hot plate 230 The lower end portion of the steam discharge pipe 280 is exposed to the lower side of the steam discharge pipe is installed on the upper end of the pressure weight 285 to selectively open and close the pipeline of the steam discharge pipe 280.

Therefore, in the state in which the lid 200 is opened to open the body 100, the inner pot 110 containing the cooking object is stored in the inner pot support 120, and then the lid 200 is closed again to close the body 100. Let's do it.

In this state, when the user selects the cooking mode, the lower hot plate 130 constituting the main body 100 and the upper hot plate 130 constituting the lid 200 and the heat 200 are supplied with power to generate heat, Since the heat transfer is transferred to the inner pot support 120 in the main body 100, the cooking object stored in the inner pot 110 is heated as the inner pot support 120 is heated, and cooking is performed.

When the user rotates the operation handle 290 in the locking direction of the lid 200, the above-mentioned electric pressure cooker to lock the lid 200 to the main body 100, and also to remove the operation handle 290 When rotated in the opposite direction is equipped with a locking device for releasing the locking of the lid 200, this is because the inside of the main body 100 is subjected to high temperature and high pressure during cooking if the lid (200) ) Is opened to prevent the user from getting burned because of the heat of the steam.

As shown in FIGS. 1 and 2, the locking device includes a plurality of flange portions 115 to be bent outwardly at predetermined intervals along the opened upper edge of the inner pot 110 constituting the main body 100. And a ring-shaped locking ring 240 is rotatably supported on an outer circumferential surface of the upper hot plate 230 having the packing 235 fixed to the inner cover 220 and rotatably supporting the locking ring 240. A plurality of engaging pieces 245 are formed in the lower portion of the perimeter surface to bend inwardly at a predetermined interval along the perimeter surface.

The conventional locking device configured as described above is locked between the flanges 115 formed on the upper end of the inner pot 110 until the user rotates the operation handle 290 in the locking direction of the lid 200 in a state in which the lid 200 is closed. Since the locking piece 245 of the ring 240 is located, the lid 200 is not locked to the main body 100.

In this state, when the user rotates the operation handle 290 in the locking direction of the lid 200, the flanges 115 formed on the inner pot 110 and the locking pieces 245 of the locking ring 240 are positioned side by side up and down. As a result, the lid 200 is locked to the main body 100 as the flanges 115 are caught by the locking pieces 245.

However, the above-described conventional electric pressure cooker is separate to prevent the rotation of the locking ring 240 in the direction in which the lid 200 is opened when the pressure inside the inner pot 110 is higher than atmospheric pressure. Since there is no rotation preventing means of the following problems.

That is, when the user inadvertently rotates the operation handle 290 in the direction in which the lid 200 is opened while performing the cooking function, the user is exposed to high temperature steam or explosion due to the instantaneous opening of the high temperature and high pressure 110. There was a risk of becoming.

In addition, while performing the warming function, the pressure is not so high as compared to when the cooking function is performed, but the locking piece 245 of the locking ring 240 contacts the flange portion 115 of the inner pot 110 to maintain a predetermined pressure. In this case, when the user rotates the operation handle 290, there is a problem that the surface is damaged by the friction between the contact surface of the locking ring 240 and the flange portion 115.

The present invention has been made to solve the conventional problems as described above, the present invention is to prevent the rotation of the locking ring in the direction of opening the lid when the pressure inside the inner pot is higher than the atmospheric pressure. An object of the present invention is to provide a lid preventing opening device of an electric pressure cooker.

1 is a longitudinal sectional view schematically showing an electric pressure cooker according to the prior art,

2 is an enlarged view of a portion “A” of FIG. 1;

3 is a partially cutaway perspective view showing the rotation preventing means of the electric pressure cooker according to the present invention;

Figure 4a, 4b is a sectional view showing the main portion of the operation of the rotation preventing means according to the pressure change inside the inner pot of the electric pressure cooker according to the present invention.

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

100 ... body, 110 ... inner pot,

115..Flange section, 115a .... Insertion groove,

200 .... lid, 240 .... locking ring,

245 .... Jam, 245a .... Anti-rotation protrusion.

In order to achieve the above object, according to the present invention, a plurality of flanges are formed at regular intervals along the opened upper periphery so as to be rotatable on an inner pot seated inside the body and a circumferential surface of the upper hot plate for opening and closing the inner pot. An electric pressure cooker having a locking ring fixed to the lower part of the circumferential surface to be selectively interviewed with the flange part at a predetermined interval so as to seal the upper hot plate and the inner pot so as to seal or release the fastening state. In the corresponding surface in which the flange portion and the engaging piece are interviewed with each other is provided with a rotation preventing means to selectively restrict the rotation of the locking ring for the inner pot, when the pressure inside the inner pot is higher than the pressure outside To prevent the locking ring from rotating in the direction that the inner pot is open to the The lid opening O protection of the electric pressure cooker is provided with.

Hereinafter, an embodiment of the present invention will be described in more detail with reference to the drawings.

In the following description, the same members of the main components of the electric pressure cooker according to the present invention will be given the same reference numbers with reference to the above-described prior art according to Figures 1 and 2, the detailed description thereof will be omitted.

Figure 3 is a partially cutaway perspective view showing a rotation preventing means of the electric pressure cooker according to the present invention, Figure 4a, 4b is a main portion showing the operating state of the rotation preventing means according to the pressure change in the inner pot of the electric pressure cooker according to the present invention. It is a cross section.

The locking device of the electric pressure cooker according to the present invention is formed with a plurality of flanges 115 to be bent outwards at a predetermined interval spaced along the upper periphery of the inner pot 110 constituting the main body (100, Figure 1), A ring-shaped locking ring 240 is rotatably supported on the outer circumferential surface of the upper hot plate 230 having the packing 235 (FIG. 2) fixed to the inner cover 220 (FIG. 1), and the locking ring ( A plurality of locking pieces 245 are formed in the lower portion of the circumferential surface 240 to be bent inwardly at predetermined intervals along the circumferential surface thereof, as described with reference to FIGS. 1 and 2.

In addition, on the edge portion 125 that forms the upper surface of the flange portion 115 and the inner pot support portion 120 that are bent outwardly at the upper end of the inner pot 110, the inner pot 110 when the inside of the high pressure than the atmospheric pressure lid It is provided with a rotation preventing means for preventing the rotation of the locking ring 240 in the direction in which the 200 is opened.

Hereinafter, the rotation preventing means will be described in more detail.

The anti-rotation means, while protruding the anti-rotation projection (245a) on the upper surface of the engaging piece 245 of the locking ring 240 constituting the lid 200, the inner pot 110 constituting the main body 100 The bottom of the flange portion 115 is to form an insertion groove 115a so that the anti-rotation protrusion 245a can be inserted correspondingly.

In this case, the rotation preventing protrusion 245a and the insertion groove 115a are formed at positions where the locking ring 240 restrains the opening of the lid 200, that is, when the lid 200 is in the locked state. Are formed at positions corresponding to each other in the direction.

Accordingly, when the cooking function or the warming function is performed, the pressure inside the inner pot 110 becomes higher than the atmospheric pressure, so that the inner pot 110 is in a high pressure state, and the locking piece 245 and the inner pot 110 of the locking ring 240 are formed. When the flange portion 115 of the) is in close contact with each other, the anti-rotation protrusion 245a is inserted corresponding to the insertion groove (115a), thereby rotating the locking ring 240 for the inner pot 110 It is configured to be restrained.

Meanwhile, according to the shape of the anti-rotation protrusion 245a illustrated in FIGS. 3 and 4, the anti-rotation protrusion 245a is formed in a substantially hemispherical shape, and the insertion groove 115a has a hemispherical shape corresponding to the shape of the anti-rotation protrusion 245a. Although illustrated as being formed as a groove, it is not limited thereto.

That is, the locking piece 245 of the locking ring 240 and the flange 115 of the inner pot 110 are in close contact with each other by an increase in the pressure of the inner pot 110, and the inner pot 110 is locked in the opening direction. Various concave-convex shapes or projections and grooves that can constrain the rotation of the ring 240 can be used.

The anti-rotation protrusion 245a and the insertion groove 115a are integrally formed on the locking piece 245 and the flange 115 at the time of forming the locking ring 240 and the inner pot 110, thereby preventing rotation. The manufacturing process is simplified by eliminating the need for a separate manufacturing process by means molding.

Referring to the operation and effect of the rotation preventing means according to an embodiment of the present invention made of the above configuration are as follows.

First, Figure 4a is an operating state of the rotation preventing means before performing the cooking function, as shown in Figure 4a, the user inserts the inner pot 110 in the main body (100, Figure 1) after the operation handle ( 290 is the locking piece 240 of the locking ring 240 because the pressure inside the inner pot 110 is almost the same as the atmospheric pressure before performing the cooking function in the rotating direction of the lid 200, Figure 1 in the locking direction ) And the corresponding surface of the flange portion 115 between the inner pot 110 is spaced up and down by a predetermined interval.

At this time, the anti-rotation protrusion 245a and the insertion groove 115a are spaced apart from each other by a predetermined interval to face up and down.

Subsequently, when the user performs the cooking function, the pressure inside the inner pot 110 after a predetermined time is in a high pressure state much higher than atmospheric pressure, so the locking piece 245 of the locking ring 240 and the plan of the inner pot 110 Corresponding surfaces between the branches 115 are in close contact with each other, and the anti-rotation protrusion 245a is inserted into the insertion groove 115a.

At this time, as the anti-rotation protrusion 245a and the insertion groove 115a are coupled to each other, the rotation of the locking ring 240 is restricted.

Therefore, in this case, even if the user inadvertently rotates the operation handle 290 in the direction in which the lid 200 is opened, the rotation of the locking ring 240 is constrained by the anti-rotation protrusion 245a and the insertion groove 115a. As the inner pot 110 of the high temperature and high pressure can be prevented from being opened momentarily.

In addition, when the heat retaining function is performed, the anti-rotation protrusion 245a and the insertion groove 115a are in a state in which the locking ring 240 and the flange portion 115 are constrained by rotation of the locking ring 240. It is possible to prevent surface damage due to friction between the contact surfaces.

On the other hand, the embodiment of the present invention as described above is configured to help the understanding of the present invention is not limited only to the above-described embodiment, various modifications are possible within the scope without departing from the spirit of the present invention.

As described in detail above, according to the present invention, the rotation of the locking ring is constrained as the anti-rotation protrusion and the insertion groove are coupled to each other when the cooking function or the warming function is performed, even if the user accidentally rotates the operation handle. There is an effect that can prevent the inner pot of the high temperature and high pressure to open instantly.

In addition, while performing the warming function, as the rotation of the locking ring is constrained, there is an effect of preventing surface damage due to the friction between the contact surface of the locking ring and the flange portion.

Claims (2)

A plurality of flange portions are formed at predetermined intervals along the opened upper periphery and are rotatably fixed to the inner surface of the inner pot seated inside the main body, and an upper hot plate for opening and closing the inner pot. In the electric pressure cooker having a locking ring for locking the upper hot plate and the inner pot so as to seal or release the fastening state so that a plurality of engaging pieces are protruded at regular intervals so as to be interviewed. On the corresponding surface where the flange portion and the engaging piece are interviewed with each other, anti-rotation means is provided to selectively restrain the rotation of the locking ring with respect to the inner pot, and the inner pot is formed when the pressure inside the inner pot is higher than the pressure outside. Preventing the opening of the lid of the electric pressure cooker, characterized in that to prevent the locking ring is rotated in the opening direction. The method of claim 1, The rotation preventing means, An anti-rotation protrusion protruding upward on the locking piece upper surface of the locking ring; Preventing the opening of the lid of the electric pressure cooker, characterized in that the groove formed in the groove formed in the bottom of the flange portion of the inner pot so that the anti-rotation projection can be correspondingly inserted.