KR102392702B1 - electric cooker - Google Patents

Abstract

In order to improve safety when switching between locking and unlocking of the locking ring for opening and closing the lid, the present invention provides a main body in which food is accommodated and an inner pot having a restraining protrusion protruding from an upper rim is mounted therein; a lid comprising an inner lid portion provided on the upper side of the main body to be opened and closed, and an outer lid portion covering the upper portion of the inner lid portion; a locking ring coupled to a lower portion of the inner lid portion to rotate, and having a locking protrusion protruding for selectively restricting the constraining protrusion according to a rotation angle; an opening/closing driving unit provided on one side of the upper surface of the inner lid unit, the opening/closing motor including a driving shaft rotating forward and reverse therein, and a driving gear connected to the driving shaft through a gear box; a rotating base part which is rotationally supported on the other side of the upper surface of the inner lid part and is connected to rotate with the locking ring and driven through the driving gear; and a switching means for limiting rotation of the opening/closing motor in response to the locking and unlocking angles of the locking ring.

Description

electric cooker

The present invention relates to an electric cooker, and more particularly, to an electric cooker with improved safety when switching between locking and unlocking of a locking ring for opening and closing a lid.

BACKGROUND ART In general, an electric cooker is a device used for cooking food, and includes a main body in which an inner pot for accommodating food is built in, and a lid covering the upper part of the main body.

Hereinafter, a conventional electric cooker will be described with reference to the accompanying drawings.

1 is an exploded perspective view showing a conventional electric cooker lid.

As shown in FIG. 1 , the conventional electric cooker 1 is provided with a locking handle 2 on the upper portion of the lid 3 forming the upper exterior, and the locking handle 2 is located at the lower portion of the lid 3 . It is provided to rotate with the provided locking ring (not shown).

Here, the electric cooker 1 cooks food in a high temperature and high pressure state by heating the inner pot in which the food is accommodated. The lid (3) and the inner pot are locked.

In detail, when the locking handle 2 is rotated in one direction, the locking ring (not shown) is caught by the upper edge of the inner pot (not shown) and locked, and when the locking handle 2 is rotated in the other direction, the locking state is released.

However, in the related art, there is a cumbersome need to directly rotate the locking handle 2 to lock and unlock the locking ring, and the locking handle 2 is provided to protrude from the upper portion of the lid 3 so that the locking handle 2 is provided. ), it was difficult to clean the corners on the lower side and the external design was limited, so there was a problem in that customer satisfaction was lowered.

Moreover, the locking handle 2 exposed to the upper part of the lid 3 is often mismanaged due to the curiosity of children or the carelessness of the user. There was a serious problem that safety accidents such as burns occurred due to leakage.

In addition, external water or steam seeps through the opening 4 of the lid 3 formed for interlocking between the locking handle 2 and the locking ring to corrode the circuits or wiring provided inside the lid 3 . There was a problem.

Korean Registration Office No. 20-0140054

In order to solve the above problems, an object of the present invention is to provide an electric cooker in which safety is improved when switching between locking and unlocking of a locking ring for opening and closing a lid.

In order to solve the above problems, the present invention provides a body in which food is accommodated, the inner pot having a restraining protrusion protruding from the upper rim is mounted therein; a lid comprising an inner lid portion provided on the upper side of the main body to be opened and closed, and an outer lid portion covering the upper portion of the inner lid portion; a locking ring coupled to a lower portion of the inner lid portion to rotate, and having a locking protrusion protruding for selectively restricting the constraining protrusion according to a rotation angle; an opening/closing driving unit provided on one side of the upper surface of the inner lid unit, the opening/closing motor having a driving shaft rotating forward/reverse therein, and a driving gear connected to the driving shaft through a gear box; a rotating base part which is rotationally supported on the other side of the upper surface of the inner lid part and is connected to rotate with the locking ring and driven through the driving gear; and a switching means for limiting rotation of the opening/closing motor in response to the locking and unlocking angles of the locking ring, wherein the rotating base rotates on the lower surface so that a support protrusion protruding from the other side of the upper surface of the inner lid is inserted. A support portion having a support groove portion formed thereon, and an internal gear protrusion that is externally coupled to the drive gear along a lower surface of a rim extending radially outward from the support portion to cover the upper portion of the driving gear, and extending in a circumferential direction toward the outside in the radial direction, protrudes It provides an electric cooker, characterized in that it comprises a gear coupling part.

Here, the switching means includes a pair of magnets coupled to the upper surface of the locking ring and disposed to be spaced apart from each other in the locking rotational direction and the unlockingrotational direction of the locking ring, and is provided in the inner lid portion to lock the locking ring It is preferable to include a pair of reed switches for sensing magnetic force, respectively arranged to correspond to the position of the magnet unit disposed on the lock rotation direction side and the position of the magnet unit disposed on the unlock rotation direction side when the locking ring is unlocked .

In addition, the opening/closing motor is preferably controlled by a microcomputer to rotate forward/reverse in response to a signal input through a manipulation button.

In this case, it is preferable that the opening/closing motor is controlled by a microcomputer such that rotation of the reed switch is stopped according to one detection signal disposed in the rotational direction of the locking ring.

delete

Through the above solution means, the electric cooker according to the present invention provides the following effects.

First, since the locking ring and the rotating base rotating base are connected to the opening/closing motor driven according to the input of the operation button, the locking and unlocking of the locking ring can be automatically switched with a simple button operation, so that the convenience of use can be improved, and the rotation A separate handle member for manual operation of the base is removed to improve the appearance of the product, but the lock release during cooking due to erroneous operation of the handle member exposed on the upper part of the lid is fundamentally blocked, so the safety of the product can be improved.

Second, each of the pair of reed switches provided in the inner lid part can accurately detect the locking state and unlocking state of the locking ring, and since the magnet part is provided in the locking ring, which is the direct locking body, the magnet part and the locking ring The safety of the product can be improved because the lock state can be accurately detected without any deviation between positions.

Third, the rotational base portion is provided in a sector shape extending in the circumferential direction to cover the upper portion of the driving gear, and the inner gear protrusion in contact with the radially outer side of the driving gear is formed on the lower surface of the extended arc-side rim. The rotational force of the rotating base can be increased by reducing the rotational trajectory of the locking ring, which is the main body, and the distance between the driving gears, so that smooth rotation of the locking ring is possible even if a low-output opening/closing motor is used, thereby improving the economic feasibility of the product.

1 is an exploded perspective view showing a conventional electric cooker lid.
Figure 2 is an exploded perspective view showing the lid of the electric cooker according to an embodiment of the present invention.
Figure 3 is a perspective view showing a state in which each component is coupled to the inner lid portion of the electric cooker according to an embodiment of the present invention.
Figure 4 is a perspective view showing a rotating base portion of the electric cooker according to an embodiment of the present invention.
5 is a perspective view illustrating an opening/closing driving unit of an electric cooker according to an embodiment of the present invention;
6 is a perspective view showing an inner lid part of the electric cooker according to an embodiment of the present invention.

Hereinafter, an electric cooker according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

Figure 2 is an exploded perspective view showing the lid part of the electric cooker according to an embodiment of the present invention, Figure 3 is a perspective view showing the state that each component is coupled to the inner lid part of the electric cooker according to an embodiment of the present invention, 4 is a perspective view showing a rotating base of the electric cooker according to an embodiment of the present invention, FIG. 5 is a perspective view showing an opening/closing driving part of the electric cooker according to an embodiment of the present invention, and FIG. 6 is an embodiment of the present invention It is a perspective view showing the inner lid part of the electric cooker according to the example.

2 to 6, the electric cooker 100 according to an embodiment of the present invention has a main body (not shown), a lid 10, a locking ring 30, a rotating base unit 20, and an opening/closing driving unit. (40), and a switching means (50).

Here, a mounting space provided with a heating means such as a hot plate heater or an induction heating device is formed inside the main body (not shown), and an inner pot (not shown) in which food is accommodated is coupled to the inside of the mounting space.

In addition, a plurality of constraining projections (not shown) protrude in the radial direction along the upper edge of the inner pot (not shown).

On the other hand, 2 to 3, the lid 10 is provided on the upper side of the main body to open and close the inner lid portion (10b), and an outer lid portion (10b) covering the upper portion of the inner lid portion (10b). 10a). In this case, the outer lid portion 10a forms the exterior of the electric cooker 100, but can protect various electric components and wiring installed in the inner lid portion 10b.

And, the locking ring 30 is rotatably coupled to the lower portion of the inner lid portion (10b). At this time, a plurality of locking projections 32 protrude inward in the radial direction to correspond to each of the locking projections (not shown) on the inner periphery of the locking ring 30 , and the locking projections 32 are locked according to the rotation angle. The projections (not shown) may be selectively constrained.

In detail, at the locking angle at which each of the locking protrusions 32 is disposed under the constraining protrusion (not shown), the locking protrusion 32 is constrained to the lower surface of the constraining protrusion (not shown) so that the inner pot and the lid 10 are locked. At an unlocking angle at which each locking protrusion 32 is disposed in the space between the constraining protrusions (not shown), the locking protrusion 32 passes through the space between the constraining protrusions (not shown) and the inner pot (not shown) and the lid can be unlocked.

On the other hand, the opening/closing driving unit 40 is provided on one side of the upper surface of the inner lid unit 10b, and an opening/closing motor 40c having a driving shaft (not shown) rotated forward/reverse therein, and the driving shaft ( (not shown) and a driving gear 40a connected through a gearbox 40b.

At this time, it is preferable to understand that one side of the upper surface of the inner lid portion 10b means an outer portion of the inner lid portion 10b adjacent to the rotation trajectory of the locking ring 30 .

Here, the main body (not shown) to the lid 10 are provided with a manipulation button (not shown) and a microcomputer (not shown) for controlling locking and unlocking, and the microcomputer (not shown) is provided with an input manipulation button (not shown). time), the driving shaft (not shown) of the opening/closing motor 40c is controlled to rotate forward or reversely, and the rotational force of the driving shaft (not shown) is transmitted to the driving gear 40a through the gearbox 40b. is transmitted

In detail, referring to FIGS. 2 to 6 , the upper portion of the gearbox 40b is connected to the drive shaft (not shown) and a plurality of reduction gears (not shown), and the output shaft 42 is provided with a decuted end. It is preferable that a decut groove 41 to be coupled to the output shaft 42 is formed in the driving gear 40a.

As such, the rotational force of the output shaft 42 may be increased through a plurality of reduction gears (not shown), and the rotational force of the output shaft 42 may be accurately transmitted to the driving gear 40a through the decut groove portion 41 . there is.

In addition, a plurality of bolt through holes 48 are formed along the edge of the gear box 40b, and the bolt fastening holes 19 corresponding to the respective bolt through holes 48 are formed in the inner lid portion 10b. As the plurality of bolt members 49 penetrate the bolt through hole 48 and are fastened to the bolt fastening hole 19, the flow of the gear box 40b is prevented, and the rotational force of the driving gear 40a is It can be accurately transferred to the rotating base unit 20 .

On the other hand, the rotating base part 20 is rotationally supported on the other side of the upper surface of the inner lid part 10b, is connected to rotate with the locking ring 30 and is driven by the rotational force of the driving gear 40a.

Here, the other side of the upper surface of the inner lid portion (10b) is preferably understood to mean a central portion of the inner lid portion (10b) adjacent to the rotation center of the locking ring (30).

At this time, the rotating base unit 20 is rotated in one direction and the other direction according to the forward/reverse rotation direction of the drive shaft, and can transmit the rotational force of the opening/closing driving unit 40 to the locking ring 30 .

In detail, referring to FIGS. 3 to 6 , the rotary base 20 includes a support 20c, a gear coupling part 20b, and a connection part 20a, and the support part 20c, the gear coupling part ( 20b), it is preferable that the connection part 20a is integrally molded and provided as a single member.

Here, the support portion 20c is formed on the vertex side of the rotary base portion 20 provided in a sectoral shape, and the rotation support groove portion 23 is formed on the lower surface of the support portion 20c.

And, a support protrusion 12 protrudes from the other side of the upper surface of the inner lid part 10b, and as the support protrusion 12 is inserted into the rotation support groove part 23, the rotation base part 20 and The inner lid portion 10b may be coupled, and the rotation support groove portion 23 and the support protrusion 12 are provided with a circular cross section so that the rotation base portion 20 is attached to the inner lid portion 10b. It can be rotated in a coupled state.

Here, the overlapping height between the rotation support groove part 23 and the support protrusion 12 is preferably set to be greater than the interval between the outer lid part 10a and the rotation base part 20 .

Accordingly, when the support protrusion 12 is inserted into the rotation support groove 23 without a separate fastening means and then the outer lid portion 10a and the inner lid portion 10b are combined, the rotation base portion 20 is the inside It can be rotated while maintaining the combined state without being separated from the lid portion (10b).

In addition, the gear coupling portion 20b extends radially outwardly from the support portion 20c to cover the upper portion of the driving gear 40a, and to be provided in the shape of a sector in the circumferential direction extending outward in the radial direction. can

At this time, it is preferable that the internal gear protrusion 25 that is externally coupled to the driving gear 40a protrudes along the lower surface of the radially outer edge extending in the circumferential direction to form a sectoral arc.

Here, the internal gear protrusion 25 is formed in plurality to correspond to the interval between the locking and unlocking angles of the locking ring 30, and the rotary base part 20 is driven through the internal gear protrusion 25. 40a) may be rotationally driven by receiving the rotational force.

At this time, since the internal gear protrusion 25 is formed along the radially outer side of the driving gear 40a, the rotational trajectory of the locking ring 30, which is a substantial rotational body, and the distance between the driving gear 40a are reduced and are the same Even when the output opening/closing motor 40c is used, the rotational force of the rotating base 20 may be increased.

Accordingly, even when the low-output opening/closing motor 40c is used, smooth rotation of the rotating base 20 and the locking ring 30 is possible, thereby improving the economic feasibility of the product.

At this time, it is preferable that the gear seating confirmation hole 22 is formed through the upper surface of the gear coupling part 20b along the coupling part between the internal gear protrusion 25 and the driving gear 40a.

Here, the gear seating confirmation hole 22 may be formed at the start and end portions of the internal gear projection 25, respectively, and the driving gear 40a and the internal gear projection through the gear seating confirmation hole 22 When assembling (25), it is possible to easily check whether the gears are matched.

In addition, the connecting portion (20a) is formed at the outer end of the arc side of the gear coupling portion (20b), the connection hole (21) to which the connecting projection (31) protruding from the upper surface of the locking ring (30) is fastened therein. this is formed

At this time, it is preferable that the arc-shaped long hole 11 is formed in the inner lid part 10b to correspond to the movement trajectory of the connecting protrusion 31 when the locking ring 30 is rotated from the locking angle to the unlocking angle.

And, the connecting protrusion 31 penetrates the arc-shaped long hole 11 and is disposed in the connecting hole 21 , and has a head larger than the diameter of the connecting hole 21 at the upper portion of the connecting protrusion 31 . As the bolt member 29 is fastened, the connecting portion 20a and the connecting protrusion 31 may be connected.

Accordingly, the rotation base 20 and the locking ring 30 can be rotated, and as the connecting protrusion 31 is caught on both ends of the arc-shaped long hole 11, the locking ring 30 The radius of rotation of may be mechanically limited.

In this way, since the locking ring 30 and the rotating base unit 20 rotated are connected to the opening/closing motor 40c driven according to an input signal of an operation button (not shown), the rotating base unit 20 with a simple button operation. is rotated and the locking and unlocking state of the locking ring 30 can be automatically switched, so that the usability of the product can be improved, and a separate handle member for manual operation of the rotary base 20 (see FIG. 1 ) 2) can be removed.

Accordingly, the process of assembling the handle member to the lid can be omitted and productivity can be improved, and as the opening (see 4 in FIG. 1) of the lid formed for interlocking the handle member and the rotating base part is removed, the opening and the handle member are removed. The appearance and cleanliness of the product can be improved by preventing foreign substances from getting caught in the gap, and corrosion of wiring or circuits that can be caused by water or steam introduced through the opening is minimized, so that the durability of the product can be improved.

Furthermore, the safety of the product can be improved because unlocking during cooking, which may occur due to an erroneous operation of the handle member exposed to the upper part of the lid, and leakage of high-temperature and high-pressure steam resulting therefrom can be prevented in advance.

Meanwhile, the switching means 50 limits the rotation of the opening/closing motor 40c in response to the locking and unlocking angles of the locking ring 30 .

That is, when an operation button (not shown) for locking is input, the drive shaft (not shown) rotates in the forward direction, and the rotating base 20 rotates in one direction so that the locking protrusion 32 of the locking ring 30 is rotated in the inner pot (not shown). City) may be rotated to be disposed under the restraining projection (not shown), and the switching means 50 stops the driving of the opening/closing motor 40c when the locking ring 30 is rotated to a locking angle.

Similarly, when an operation button (not shown) for unlocking is input, the drive shaft (not shown) is rotated in the reverse direction, and the rotating base part 20 is rotated in the other direction so that the locking protrusion 32 of the locking ring 30 is restrained. It may be rotated to be disposed in the space between the projections, and the switching means 50 stops the driving of the opening/closing motor 40c when the locking ring 30 is rotated to the unlocking angle.

In detail, referring to FIGS. 2 to 3 , the switching means 50 is coupled to the upper surface of the locking ring 30 and is disposed to be spaced apart from each other in the locking and unlocking rotational directions of the locking ring 30 . A pair of magnet parts (51a, 51b), the position of the magnet part (51a) provided on the inner lid part (10b) and disposed on the lock rotation direction side when the locking ring (30) is locked and the locking ring (30) ), it is preferable to include a pair of reed switches 52a and 52b for sensing magnetic force, respectively disposed to correspond to the position of the magnet portion 51b disposed on the unlocking rotational direction side when unlocking.

At this time, the separation angle between the reed switches 52a and 52b is preferably set to a value obtained by adding the rotation angle from the locking position to the unlocking position of the locking ring 30 to the separation angle between the magnet parts 51a and 51b. .

That is, when the locking ring 30 is locked, the magnet part 51a disposed on the lock rotation direction side is disposed below the reed switch 52a positioned in the clockwise direction among the reed switches 52a and 52b, and the lock The magnet part 51b disposed on the side in the release rotation direction is disposed at a position spaced apart clockwise from the lower part of the reed switch 52b positioned in the counterclockwise direction among the reed switches 52a and 52b.

Similarly, when the locking ring 30 is unlocked, the magnet portion 51b disposed on the unlocking rotational direction side is disposed under the reed switch 52b positioned in the counterclockwise direction, and disposed on the locking rotational direction side. The magnet portion 51a is disposed at a position spaced apart in a counterclockwise direction from the lower portion of the reed switch 52a located in the clockwise direction.

Accordingly, each of the pair of reed switches 52a and 52b can accurately distinguish and detect the locked state and the unlocked state of the locking ring 30, and the locking ring 30 rotates from the locking angle to the unlocking angle. In addition, each reed switch 52a, 52b senses the magnetic force of each magnet portion 51a, 51b to stop the driving of the opening/closing motor 40c.

In detail, the opening/closing motor 40c is controlled by a microcomputer (not shown) so that rotation is stopped according to one detection signal disposed in the rotational direction of the locking ring 30 among the reed switches 52a and 52b. desirable.

For example, at the unlocking angle of the locking ring 30, the reed switch 52b located in the counterclockwise direction among the reed switches 52a and 52b is located in the counterclockwise direction among the magnet parts 51a and 51b. It is in a sensed state by the magnet part 51b.

At this time, the magnet portion 51a located in the clockwise direction is disposed counterclockwise from the reed switch 52a located in the clockwise direction.

Here, when the operation button for locking is input, the microcomputer (not shown) drives the opening/closing motor 40c to rotate the locking ring 30 clockwise.

Accordingly, the magnet part 51a located in the clockwise direction is moved to the lower part of the reed switch 52a located in the clockwise direction, and the opening/closing motor 40c is rotated according to the detection signal of the reed switch 52a located in the clockwise direction. this is stopped

Similarly, at the locking angle of the locking ring 30, the reed switch 52a positioned in a clockwise direction among the reed switches 52a and 52b is a magnet part located in the clockwise direction among the magnet parts 51a and 51b ( 51a), it becomes a detection state.

At this time, the magnet portion 51b located in the counterclockwise direction is disposed clockwise from the reed switch 52b located in the counterclockwise direction.

Here, when the operation button for unlocking the lock is input, the microcomputer (not shown) drives the opening/closing motor 40c so that the locking ring 30 is rotated counterclockwise.

Accordingly, the magnet part 51b located in the counterclockwise direction is moved to the lower part of the reed switch 52b located in the counterclockwise direction, and the opening/closing motor 40c according to the detection signal of the reed switch 52b located in the counterclockwise direction. ) is stopped.

Of course, the rotation direction of the opening/closing motor 40c may be set according to the input of each operation button corresponding to locking and unlocking, and when one operation button is provided, the currently sensed reed switches 52a and 52b) It is also possible to set correspondingly.

That is, the microcomputer may set the rotation direction of the opening/closing motor 40c so that the locking ring 30 rotates counterclockwise when a detection signal of the reed switch 52a located in the clockwise direction is received when the operation button is input. In addition, when the detection signal of the reed switch 52b located in the counterclockwise direction is received, the rotation direction of the opening/closing motor 40c may be set so that the locking ring 30 rotates clockwise.

For this reason, the opening/closing motor 40c can be quickly and accurately controlled through whether a detection signal is generated from one of the reed switches 52a and 52b without a complicated device configuration or control material for controlling the rotation amount of the opening/closing motor 40c. In addition, the durability of the product can be improved by preventing an overload of the opening/closing motor 40c due to excessive rotation.

In addition, since the magnet parts 51a and 51b are provided in the locking ring 30, which is a direct locking body, unlike the case provided in the interlocking parts of the locking ring 30 such as the rotating base 20, damage to the interlocking parts, etc. The locking and unlocking state through the locking ring 30 can be accurately detected without any deviation between the positions of the magnet parts 51a and 51b and the locking ring 30 that may occur due to the increased safety of the product. can

Moreover, when the locking ring 30 is rotated, the connecting protrusions 31 are caught at both ends of the arc-shaped long hole 11, and the maximum rotation angle of the locking ring 30 in one direction and the other direction can be mechanically limited. Therefore, even when the reed switches 52a and 52b are damaged or the magnet parts 51a and 51b are removed, the locking ring 30 is locked and Since the unlocking state can be accurately switched, the driving reliability of the product can be further improved.

On the other hand, the upper surface of the locking ring 30 is preferably formed with a seating groove portion 33 recessed so that the magnet portion (51a, 51b) is inserted, the inner space of the seating groove portion 33 is the magnet portion (51a) , 51b) may be provided to match. At this time, the rim of the seating groove part 33 may constrain the outer surface of the magnet parts 51a and 51b, and when the locking ring 30 rotates, the flow and position movement of the magnet parts 51a and 51b are controlled. can be prevented

And, it is preferable that the magnet cover portion 33a is coupled to the upper portion of the seating groove portion 33 so as to cover the magnet portions 51a and 51b inserted therein. At this time, a fastening hole 33b is formed at one side of the magnet cover part 33a, and a screw member 33d passing through the fastening hole 33b is provided on the side of the seating groove part 33. A fastening groove 33c. As the magnet cover part 33a shields the upper opening of the seating groove part 33, separation of the magnet parts 51a and 51b when the lid 10 is opened and closed can be prevented.

On the other hand, the rotation base portion 20 is provided with a safety restraint portion (20d) extending radially outward from the support portion (20c) which is rotationally supported by the inner lid portion (10b).

Here, the safety restraint portion 20d is formed on the outer surface of the support portion 20c opposite to the portion where the gear coupling portion 20b is formed, and the safety restraint portion 20d has the rotation according to the internal pressure of the inner pot. It is preferable that the safety bar 60 restricting the rotation of the base 20 is connected.

That is, the safety bar 60 restricts the rotation of the rotary base 20 when the internal pressure of the inner pot is higher than the set pressure, and can prevent the inner pot from being opened in a high pressure state.

At this time, the safety restraint part 20d and the safety bar 60 are connected so that the safety bar 60 moves forward/rearward according to the rotation of the rotating base part 20, and the internal pressure of the inner pot is preset. When the safety pressure is higher than the safety pressure, the forward/backward movement of the safety bar 60 may be restricted, thereby limiting the rotation of the rotating base unit 20 .

Here, the safety bar 60 preferably includes a body portion 60a and a link portion 60b. In detail, the safety bar 60 is disposed on the upper portion of the pressure safety device 70 provided in the inner lid portion (10b).

At this time, a pair of guide portions 13 disposed to be spaced apart from each other at intervals corresponding to the width of the body portion 60a protrude from the inner lid portion 10b. Accordingly, the body portion 60a may be guided along the inner surface of the guide portion 13 to move forward/backward in the correct direction.

And, the link portion (60b) is formed to extend in the transverse direction to the end opposite to the rotation base portion (20) in the body portion (60a), the link protrusion (24) protruding from the safety restraint portion (20d) ) is inserted into the slide link hole 61 is formed.

Here, the link hole 61 is preferably provided in a straight line extending in a direction perpendicular to the moving direction of the body portion (60a).

At this time, when the rotating base part 20 is rotated, the link protrusion 24 is moved in a horizontal direction along the inside of the link hole 61 in a circular arc, and the link part 60b is pulled forward. And, when the rotation base part 20 is rotated in the opposite direction, the link protrusion 24 moves along the inside of the link hole 61 and pushes the link part 60b rearward.

Accordingly, the safety bar 60 may move back and forth when the rotating base part 20 rotates.

In addition, the body portion 60a is formed with a restraint hole 62 into which the safety pin 71 of the pressure safety device 70 is inserted. At this time, the restraining hole 62 is located in a portion opposite to the safety pin 71 in a state in which the rotating base portion 20 is rotated and the body portion 60a is advanced to lock the locking ring 30 . It is preferable to form

In detail, when the internal pressure of the inner pot becomes higher than the set safety pressure, the safety pin 71 of the pressure safety device 70 rises, and as the raised safety pin 71 is inserted into the restraint hole 62, the safety bar 60 moves backward. This is limited to restrict the rotation of the rotating base portion (20).

And, when the internal pressure of the inner pot is lowered and the safety pin 71 is lowered and separated from the restraint hole 62 , the restraint of the safety bar 60 is released and the rotation base 20 can be rotated.

As such, when the inner pressure of the inner pot is high, the locking ring 30 can be fixed at the locking angle, thereby preventing the lid 10 from being opened in a high temperature and high pressure state, and safety accidents such as burns due to leakage of high temperature steam Product safety can be improved by preventing

In addition, the lid 10 may be provided with a pressure weight valve (not shown) for selectively discharging the steam inside the inner pot (not shown) to the outside by switching opening and closing according to the advance and retreat of the safety bar 60 . . Accordingly, when the locking ring 30 is unlocked, the pressure weight valve (not shown) is opened and the steam inside is automatically discharged to enable safe opening of the lid 10 , and when the locking ring 30 is locked, the pressure weight valve (not shown) is closed to block the discharge of steam, so that efficient cooking can be achieved.

As described above, the present invention is not limited to each of the above-described embodiments, and variations can be implemented by those of ordinary skill in the art to which the present invention pertains without departing from the scope of the claims of the present invention. and such modifications are within the scope of the present invention.

1,100: Electric cooker 2: Lock handle
3,10: lid 10a: outer lid part
10b: inner lid part 11: arc-shaped long hole
12: support projection 13: guide part
20: rotating base 21: connection hole
22: gear seating confirmation hole 23: rotation support groove
24: link protrusion 30: locking ring
31: connecting projection 32: locking projection
33: seating groove 40: opening and closing driving part
40a: drive gear 40b: gearbox
40c: opening and closing motor 51a, 51b: magnet part
52a, 52b: reed switch 60: safety bar

Claims (12)

a body in which food is accommodated, and an inner pot with a protrusion protruding from the upper rim is mounted therein;
a lid comprising an inner lid portion provided on the upper side of the main body to be opened and closed, and an outer lid portion covering the upper portion of the inner lid portion;
a locking ring coupled to a lower portion of the inner lid portion so as to be rotated, and having a locking protrusion protruding for selectively restricting the constraining protrusion according to a rotation angle;
an opening/closing driving unit provided on one side of the upper surface of the inner lid unit, the opening/closing motor having a driving shaft rotating forward/reversely therein, and a driving gear connected to the driving shaft through a gearbox;
a rotational base part rotationally supported on the other side of the upper surface of the inner lid part, connected to rotate with the locking ring and driven through the driving gear; and
a switching means for limiting rotation of the opening/closing motor in response to the locking and unlocking angle of the locking ring;
The rotating base part
a support portion formed with a rotation support groove portion on the lower surface portion so that a support projection protruding from the other side of the upper surface portion of the inner lid portion is inserted;
Doedoe extending outward in a radial direction to cover the upper portion of the driving gear from the support portion, along the lower surface of the rim extending in the circumferential direction toward the radially outward direction, including a gear coupling portion having an internal gear projection externally coupled to the driving gear protruding therefrom Features an electric cooker. The method of claim 1,
The switching means is
a pair of magnets coupled to the upper surface of the locking ring and arranged to be spaced apart from each other in the locking rotational direction and the unlocking rotational direction of the locking ring;
It is provided in the inner lid part and is respectively arranged to correspond to the position of the magnet part disposed on the lock rotation direction side when the locking ring is locked and the position of the magnet part disposed on the unlock rotation direction side when the locking ring is unlocked to provide magnetic force. Electric cooker comprising a pair of reed switches to detect. The method of claim 1,
and the opening/closing motor is controlled by a microcomputer to rotate forward/reverse in response to a signal input through an operation button. 3. The method of claim 2,
and the opening/closing motor is controlled by a microcomputer such that rotation of the reed switch is stopped according to one detection signal disposed in the rotational direction of the locking ring. delete The method of claim 1,
The electric cooker, characterized in that the gear seating confirmation hole is formed through the upper surface of the gear coupling part along the coupling portion between the internal gear projection and the driving gear. The method of claim 1,
An overlapping height between the rotation support groove portion and the support projection is set to be greater than a distance between the outer lid portion and the rotation base portion. The method of claim 1,
An electric cooker, characterized in that the outer end of the gear coupling portion is formed with a connection portion that protrudes on the upper surface of the locking ring and is connected to the connection projection that penetrates the arc-shaped long hole formed in the inner lid portion. 9. The method of claim 8,
The arc-shaped long hole is an electric cooker, characterized in that it is formed to correspond to the movement trajectory of the connecting protrusion during rotation for switching the locking and unlocking of the locking ring. The method of claim 1,
The rotating base portion is provided with a safety restraint portion extending radially outward from the support portion supported by rotation of the inner lid portion,
Electric cooker, characterized in that the safety bar for restricting the rotation of the rotation base according to the internal pressure of the inner pot is connected to the safety restraint portion. 11. The method of claim 10,
The safety bar
Doedoe guided along the guide portion protruding from the upper surface of the inner lid portion, the body portion formed with a restraint hole into which the safety pin of the pressure safety device raised according to the internal pressure of the inner pot is inserted,
The electric cooker comprising: a link portion formed to extend laterally at an end of the body portion and having a link hole through which a link protrusion protruding from the safety restraint portion is inserted to slide. The method of claim 1,
An output shaft connected to the drive shaft and a plurality of reduction gears through a plurality of reduction gears is provided at an upper portion of the gearbox, and an output shaft having an end decutted is provided,
The electric cooker, characterized in that the driving gear is formed with a decut groove to be coupled to the output shaft.

Images