Electric cooker

Abstract

The present invention aims to provide an electric cooker that can improve user convenience by enabling the automatic locking or unlocking of a lid. An electric cooker for implementing this includes: a main body equipped with an inner pot for receiving food; a lid comprising an inner lid portion coupled to the upper part of the main body and located on the upper part of the inner pot, and an outer lid portion covering the upper part of the inner lid portion; a locking member coupled to the inner lid portion to lock or unlock the lid relative to the main body; and a driving motor provided in the outer area of ​​the outer edge of the locking member, which applies driving force to the locking member to lock or unlock the locking member.

Description

Technology Field

[0001] The present invention relates to an electric cooker, and more specifically, to an electric cooker in which the locking or unlocking of the lid can be performed automatically. Background Technology

[0002] An electric cooker comprises a main body equipped with an inner pot for receiving food, a lid covering the main body, and a locking member coupled to the lid so that the lid is locked or unlocked relative to the inner pot.

[0003] The lid is connected to one side of the main body by a hinge so that the open top of the main body can be opened and closed. The locking member is provided to be rotated by the rotational operation of the locking handle to be in a locked or unlocked state with respect to the inner pot. The electric cooker is configured so that cooking is performed when the locking handle is rotated and the inner pot and the locking member are locked, or so that cooking is performed in a non-pressure state where no pressure is formed inside the inner pot when the locking member and the inner pot are unlocked.

[0004] However, electric cookers with this configuration caused inconvenience to the user because they required manual rotation of the locking handle. Furthermore, the locking handle was shaped to protrude above the lid, detracting from the aesthetic appearance. Additionally, this protruding shape narrowed the area available for implementing a display unit on the lid's surface, thereby limiting the usable range of the lid's upper section. Moreover, water and foreign substances could enter through the gaps in the locking handle's operating mechanism, and safety accidents could occur due to the user's carelessness in misoperating the handle.

[0005] As prior art regarding electric cookers, Korean Utility Model Publication No. 20-2011-0008190 has been disclosed. The problem to be solved

[0006] The present invention was devised to solve the aforementioned problems, and aims to provide an electric cooker that can improve user convenience by enabling the automatic locking or unlocking of the lid. means of solving the problem

[0007] The electric cooker of the present invention for achieving the above objective comprises: a main body equipped with an inner pot for receiving food; a lid comprising an inner lid portion coupled to the upper part of the main body and located on the upper part of the inner pot, and an outer lid portion covering the upper part of the inner lid portion; a locking member coupled to the inner lid portion to lock or unlock the lid relative to the main body; and a driving motor provided in the outer region of the outer edge of the locking member, which applies a driving force to the locking member to lock or unlock the locking member. Effects of the invention

[0008] According to the present invention, user convenience can be improved by allowing the lid to be locked or unlocked by a simple operation by the user.

[0009] In addition, since the locking handle protruding from the upper surface of the lid is unnecessary, the aesthetic appearance can be improved, and a larger area can be secured on the upper surface of the lid to implement a display unit, thereby expanding the range of utilization of the upper area of ​​the lid.

[0010] In addition, since a locking handle is unnecessary, the gap formed when a locking handle is attached to the lid can be eliminated, thereby minimizing the ingress of water and foreign substances.

[0011] In addition, since a locking handle is unnecessary, it prevents users from accidentally misoperating the handle due to carelessness, thereby preventing safety accidents. Brief explanation of the drawing

[0012] FIG. 1 is a perspective view showing a state in which a driving unit, a handle base, and a lift lever are coupled to the inner lid portion of an electric cooker according to the present invention. FIG. 2 is an exploded perspective view of the electric cooker shown in FIG. 1. FIG. 3(a) is a perspective view showing the driving unit of the electric cooker shown in FIG. 1. FIG. 3(b) is a perspective view showing the state in which the drive gear fastening member in FIG. 3(a) has been removed. FIG. 4 is a perspective view showing a driving support member according to the present invention. FIG. 5 is a perspective view showing a driving module according to the present invention. FIG. 6(a) is a perspective view showing a driven gear according to the present invention. FIG. 6(b) is a bottom view showing a driven gear according to the present invention. FIG. 7 is a plan view showing the positional relationship between a locking member and a driving motor of an electric cooker according to the present invention. FIG. 8 is a plan view showing the state of the driving unit when the lid of the electric cooker according to the present invention is locked. FIG. 9 is a plan view showing the state of the driving unit when the lid of the electric cooker according to the present invention is unlocked. Specific details for implementing the invention

[0013] The present invention will be described in detail below with reference to the attached drawings.

[0014] An electric cooker (1) according to one embodiment of the present invention will be described with reference to FIGS. 1 to 7.

[0015] The above electric cooker (1) includes a main body (not shown), a lid, a locking member (20), and a driving unit (100).

[0016] A mounting space equipped with a heating means, such as a heating plate heater or an induction heating device, is formed inside the main body, and an inner pot (not shown) for containing food is mounted inside the mounting space.

[0017] The above lid may include an inner lid portion (10) that is connected to the upper part of the main body and opens and closes, on which various electrical components and wiring are installed, and an outer lid portion (not shown) that covers the upper part of the inner lid portion (10).

[0018] In the following, the front is defined as the direction in which one end (19) of the inner lid portion (10) is located, and the rear is defined as the direction in which the hinge connection portion (16) of the inner lid portion (10) is located.

[0019] A button (not shown) for inputting a driving signal to the driving unit (100) may be provided on the upper surface of the outer lid. For example, a display unit (not shown) may be provided on the upper surface of the outer lid, and a touch button may be provided on the display unit. When a user touches the touch button, a driving signal for driving the driving unit (100) is generated. When the driving signal is generated, a control unit (not shown) generates a control signal for driving the driving unit (100) so that the locking member (20) becomes locked or unlocked, thereby causing the lid to be locked or unlocked relative to the main body.

[0020] The display unit equipped with the touch button can be provided so as not to protrude from the upper surface of the outer lid.

[0021] The locking member (20) may be formed in a ring shape as shown in FIG. 2, but is not limited thereto. Any locking member (20) provided such that the lid can be locked or unlocked relative to the main body depending on whether the locking member (20) is locked or unlocked relative to the inner pot is applicable.

[0022] The locking member (20) is rotatably coupled to the lower surface of the inner lid portion (10), and a plurality of locking protrusions (22) are formed radially inwardly on the inner circumference to correspond to each flange portion of the inner pot. When the locking member (20) is rotated to an unlocking angle, each locking protrusion (22) is positioned in the space between adjacent flange portions of the inner pot, thereby unlocking the lid and allowing the lid to be opened. When the locking member (20) is rotated to a locking angle while the lid is closed, each locking protrusion (22) is constrained to the lower end of the flange portion, thereby locking the lid and the inner pot.

[0023] A plurality of connecting protrusions (23a, 23b, 23c, 23d) are formed on the upper surface of the locking member (20). The plurality of connecting protrusions (23a, 23b, 23c, 23d) are inserted to penetrate each of the plurality of arc-shaped elongated holes (15a, 15b, 15c, 15d) formed in the inner lid portion (10). In this case, the connecting protrusion (23a) located furthest forward among the plurality of connecting protrusions (23a, 23b, 23c, 23d) is inserted to penetrate the arc-shaped elongated hole (15a) formed furthest forward in the inner lid portion (10) and is coupled to the driven gear (130) by the driven gear fastening member (151).

[0024] A pair of magnetic bodies (24a, 24b) are provided on both front sides of the locking member (20) at spaced positions along the upper surface of the locking member (20). A pair of magnetic body detection units (18a, 18b) are provided in the inner lid (10) to correspond to the pair of magnetic bodies (24a, 24b). The pair of magnetic bodies (24a, 24b) are configured to rotate integrally with the locking member (20). When the locking member (20) is rotated in one direction and the magnetic body (24a) on one side is detected by the magnetic body detection unit (18a) on that side, the control unit determines that it is in a locked position. When the locking member (20) is rotated in the other direction and the magnetic body (24b) on the other side is detected by the magnetic body detection unit (18b) on that side, the control unit determines that it is in an unlocked position.

[0025] The above driving unit (100) is for applying driving force to the locking member (20) so that the locking member (20) is in a locked state or an unlocked state, and includes a driving support member (110), a driving module (120), and a driven gear (130).

[0026] The above drive support member (110) is coupled to the upper surface of the inner lid portion (10) and is provided to support the lower part of the drive module (120).

[0027] The above drive support member (110) is composed of a bottom portion (111) formed in a flat plate shape to support the gearbox (122), and a side wall (112) extending upward from the edge of the bottom portion (111).

[0028] The drive module (120) is provided within the space enclosed by the side wall (112). A straight section formed on one side of the side wall (112) is formed along the linear movement direction of the driven gear (130) to form a rail section (112a) that guides the linear movement of the driven gear (130).

[0029] In the bottom portion (111), a plurality of support member fastening holes (111a) are formed to connect the gearbox (122) to the bottom portion (111) using a gearbox fastening member (152).

[0030] On the bottom surface of the above-mentioned bottom portion (111), a plurality of support member fastening bosses (111b) are formed, which protrude downward at positions corresponding to each of the plurality of support member fastening holes (111a).

[0031] The above drive module (120) includes a drive motor (121) for applying a driving force to the locking member (20) so that the locking member (20) is in a locked state or an unlocked state, a gearbox (122) connected to the drive motor (121) so as to change the rotational speed of the drive motor (121), and a drive gear (123) for transmitting the rotation of the drive motor (121) transmitted through the gearbox (122) to the driven gear (130).

[0032] Inside the above gearbox (122), a gear (not shown) for changing the rotational speed is provided, and at the edge of the above gearbox (122), a plurality of gearbox fastening holes (122a) are formed to penetrate vertically to connect the above gearbox (122) to the drive support member (110) using the gearbox fastening member (152).

[0033] The gearbox fastening member (152) sequentially passes through the gearbox fastening hole (122a) and the support member fastening hole (111a), and is then fastened to the inner lid fastening boss (17) protruding upward from the front upper surface of the inner lid portion (10). As a result, the drive module (120) and the drive support member (110) are firmly fixed to the upper surface of the inner lid portion (10).

[0034] The drive gear (123) is provided on the upper surface of the gearbox (122), and the drive gear (123) is provided with a drive gear shaft (123b) that penetrates the center vertically. The drive gear shaft (123b) serves as the rotational center of the drive gear (123) and is connected to a gear inside the gearbox (122) to rotate. A plurality of drive gear teeth (123a) are formed along the outer circumference of the drive gear (123).

[0035] A drive gear fastening member (140) is coupled to the upper end of the drive gear shaft (123b). The drive gear fastening member (140) includes a head portion (140a) formed in the shape of a disc. The head portion (140a) may be formed as a washer coupled to the drive gear fastening member (140). The head portion (140a) is provided to be positioned above the drive gear (123) so as to prevent the drive gear (123) from moving upward while coupled to the drive gear fastening member (140).

[0036] The above driven gear (130) is engaged with the above driving gear (123) to transmit the rotational force of the above driving gear (123) to the above locking member (20).

[0037] The above driving gear (123) and driven gear (130) can be composed of various types of gears. In this embodiment, the driven gear (130) and driving gear (123) are composed of a rack and a pinion.

[0038] The above-mentioned driven gear (130) is formed in the shape of a long rectangular block and comprises a driven gear body (130a) having a plurality of driven gear teeth (130b) formed on one side, a driven gear flange portion (130e) formed in a fingernail shape extending laterally from the other side of the driven gear body (130a), and a flange connecting portion (130g) formed integrally with the driven gear flange portion (130e) and extending in a triangular shape in the same direction as the driven gear flange portion (130e) from the other side of the driven gear body (130a).

[0039] The plurality of driven gear teeth (130b) are formed in a straight line so that they mesh with the driving gear teeth (123a) of the driving gear (123) and allow the driven gear (130) to move in a straight line by the rotation of the driving gear (123).

[0040] A guide groove (130c) is formed concavely along the longitudinal direction of the driven gear body (130a) on the bottom surface of the driven gear body (130a). A rail portion (112a) of a driving support member (110), which will be described later, is inserted into the guide groove (130c) to guide the linear movement of the driven gear (130).

[0041] A guide rib (130d) is formed inside the guide groove (130c) and protrudes downward from the bottom surface of the driven gear body (130a). The guide rib (130d) is formed in a band shape along the longitudinal direction of the guide groove (130c), and a pair may be formed. When the driven gear (130) moves linearly while being guided by the rail portion (112a), the lower end of the guide rib (130d) contacts the upper surface of the rail portion (112a), thereby reducing the contact area and enabling smooth linear movement.

[0042] The driven gear flange portion (130e) extends in the opposite direction to the direction in which the driven gear teeth (130b) are formed in the driven gear body (130a). A driven gear through hole (130f) is formed in the driven gear flange portion (130e), penetrating the central portion in the vertical direction and having an elongated hole shape.

[0043] The above-mentioned driven gear fastening member (151) sequentially passes through the above-mentioned driven gear through hole (130f), the fastening member through-hole (30d) of the rotating base (30) described later, and the above-mentioned arc-shaped elongated hole (15a), and then is coupled to the above-mentioned connecting projection (23a).

[0044] In this case, the head portion of the driven gear fastening member (151) is engaged with the driven gear flange portion (130e), and the driven gear (130) and the locking member (20) are integrally coupled by the driven gear fastening member (151).

[0045] Accordingly, when the driven gear (130) moves in a straight line, the locking member (20) rotates while being guided along the arc-shaped slot (15a). Additionally, the driven gear fastening member (151) is configured to pass through the fastening member penetration part (30d), so that when the driven gear (130) moves in a straight line, the driven gear fastening member (151) engages with the drive linkage part (30a) of the rotating base (30), and the rotating base (30) rotates while being guided along the arc-shaped slot (15a).

[0046] If the driven gear (130) and the driving gear (123) are configured as a rack and pinion, the driven gear (130) moves in a straight line due to the rotational movement of the driving gear (123). If the driving gear and the driven gear are configured as rotating external gears, the radius of rotation of the driven gear increases, so the space occupied by the driving unit (100) increases compared to the case where they are configured as a rack and pinion.

[0047] Therefore, by configuring the driven gear (130) and the driving gear (123) as a rack and pinion so that the driven gear (130) moves in a linear motion, the radial size can be reduced compared to the case where the driven gear (130) moves in a rotational motion, thereby allowing the driving unit (100) to be configured compactly. In addition, the distance (L; FIG. 8) between the rotational trajectory of the locking member (20) and the driven gear tooth (130b), which is the linear movement part of the driven gear (130), is reduced, so the locking member (20) and the rotating base (30) can be rotated with a small force. Therefore, even if a low-output driving motor (121) is used, the locking member (20) and the rotating base (30) can be rotated smoothly, thereby reducing the manufacturing cost of the electric cooker (1).

[0048] Meanwhile, as shown in FIG. 3(a), the head portion (140a) of the drive gear fastening member (140) is located not only on the upper part of the drive gear (123) but also on the upper part of the driven gear body (130a) of the driven gear (130). As a result, when the driven gear (130) moves upward, the upper surface of the driven gear body (130a) comes into contact with the lower surface of the head portion (140a), thereby preventing the driven gear (130) from moving upward. In FIG. 1, FIG. 7 to FIG. 9, the illustration of the drive gear fastening member (140) has been omitted to clearly show the coupling relationship between the drive gear (123) and the driven gear (130).

[0049] The inner lid portion (10) is composed of a central support portion (10a) with an open bottom and a convex top formed so as to accommodate the ring-shaped locking member (20) inside, and a lid flange portion (10b) extending forward from at least a portion of the edge of the locking member receiving portion (10a).

[0050] A rotating base (30) and a lift lever (40) are provided on the upper part of the central support member (10a), and a driving member (100) that is linked to the locking member (20) is provided on the upper part of the lid flange member (10b).

[0051] The above-mentioned rotating base (30) is configured to rotate by the driving of the above-mentioned driving unit (100), and the above-mentioned lift lever (40) is connected to the above-mentioned rotating base (30) and moves linearly in the forward and backward directions according to the rotation of the above-mentioned rotating base (30), thereby raising and lowering the pressure regulating member (not shown) so that the pressure inside the inner pot is regulated during cooking.

[0052] The above-mentioned rotating base (30) is composed of a rotation center part (30c) which becomes the rotation center when rotated by the drive of the drive unit (100), a drive linkage part (30a) which extends from one side of the rotation center part (30c) and is linked to the drive of the drive unit (100), and a lever linkage part (30b) which extends from the other side of the rotation center part (30c) and is linked to the lift lever (40).

[0053] The lower end of the above-mentioned rotation center part (30c) is rotatably supported by a support projection (14) protruding from one side of the upper surface of the above-mentioned inner lid part (10).

[0054] The above drive linkage unit (30a) has a fastening member penetration portion (30d) through which the driven gear fastening member (151) passes. The fastening member penetration portion (30d) is formed in a roughly elongated shape by cutting the end of the drive linkage unit (30a) so that the position of the driven gear fastening member (151) can be varied inside the fastening member penetration portion (30d) when the rotating base (30) rotates.

[0055] A downwardly protruding interlocking projection (32) is formed in the lever interlocking part (30b). The interlocking projection (32) is inserted into the crank hole (41) of the lift lever (40) described later.

[0056] The lift lever part (40) described below is one embodiment for raising and lowering the pressure regulating member, and various structures can be applied as long as they are structures capable of raising and lowering the pressure regulating member.

[0057] The lift lever (40) comprises a connecting body part (40b) formed as a plate-like shape covering the rotational trajectory of the lever linkage part (30b), and a lever body part (40a) extended rearward in the linear movement direction of the lift lever (40) from the other end of the connecting body part (40b) to contact the bottom surface of the pressure regulating member.

[0058] The lever body (40a) has a lift projection (43) formed therein that raises and lowers the pressure regulating member according to the linear movement of the lift lever (40) while maintaining contact with the bottom surface of the pressure regulating member.

[0059] The lift projection (43) contacts the bottom surface of the pressure regulating member when the lift lever (40) moves in a straight line and protrudes along the edge of the upper surface of the lever body (40a) that faces the bottom surface of the pressure regulating member, and is formed to protrude upwardly in the direction of straight movement when the locking member (20) rotates in a locking direction.

[0060] That is, the lift projection (43) is formed such that the protrusion height of the part facing the bottom surface of the pressure regulating member is low when the locking member (20) is in a locked rotational state, and the protrusion height of the part facing the bottom surface of the pressure regulating member is high when the locking member (20) is in an unlocked state.

[0061] In this way, the lift lever (40) moves linearly in the forward and backward directions in conjunction with the rotation of the locking member (20) by the driving of the driving unit (100), and the pressure regulating member is raised or lowered according to the linear movement of the lift lever (40). As the pressure regulating member rises or falls, the mode for regulating the pressure inside the inner pot can be switched.

[0062] In the lever body portion (40a), a guide slot (44) is formed through one end adjacent to the connecting body portion (40b) to have a length in the direction of linear movement of the lift lever (40). As a guide projection (g) protruding from the upper surface of the inner lid portion (10) is inserted into the guide slot (44), the lift lever (40) can be guided to one side and the other side and move linearly. When the guide projection (g) is inserted into the guide slot (44), a guide projection fastening member (153) having a head portion larger than the guide slot (44) is fastened to the upper end of the guide projection (g), thereby preventing the lift lever (40) from moving upward away from the guide projection (g).

[0063] In the above connecting body part (40b), a crank hole (41) is formed so that the interlocking projection (32) is inserted and penetrates, and has a length in the tangential direction from one end of the rotational trajectory of the interlocking projection (32).

[0064] The rotational trajectory of the interlocking projection (32) refers to a curve connecting the position of the interlocking projection (32) during locking rotation of the locking member (20) to the position of the interlocking projection (32) during unlocking rotation. That is, one end of the rotational trajectory refers to the position of the interlocking projection (32) during locking rotation of the locking member (20), and the other end of the rotational trajectory refers to the position of the interlocking projection (32) during unlocking rotation of the locking member (20). In this case, the crank hole (41) is formed in a direction perpendicular to the guide slot (44) from the position of the interlocking projection (32) during locking rotation of the locking member (20).

[0065] Accordingly, when the rotation base (30) is rotated, the interlocking projection (32) moves in a left-right direction along the inside of the crank hole (41) in a lateral direction, and pulls one edge of the crank hole (41) so that the lift lever (40) can move linearly to one side in the front-rear direction perpendicular to the lateral direction. And when the rotation base (30) is rotated in the opposite direction, the interlocking projection (32) moves in a lateral direction and pushes the other edge of the crank hole (41) so that the lift lever (40) can move linearly to the other side in the front-rear direction.

[0066] Additionally, the lever body (40a) has a safety pin restraint hole (42) formed therein into which a safety pin (50) provided in the inner lid (10) can be inserted. The safety pin (50) rises when the internal pressure of the inner pot is higher than the set safety pressure, and as the raised safety pin is inserted into the safety pin restraint hole (42), the linear movement of the lever body (40a) is restrained. Therefore, when the internal pressure of the inner pot is higher than the safety pressure, the rotation of the rotating base (30) is restricted, and the unlocking of the locking member (20) is prevented, thereby preventing safety accidents.

[0067] The inner lid portion (10) can be manufactured by injection molding. In this case, a plurality of ribs (10c, 10d) are formed on the upper surface of the central support portion (10a) and the upper surface of the lid flange portion (10b), respectively, protruding upward in a vertical direction from the upper surface of the central support portion (10a) and the upper surface of the lid flange portion (10b), in order to prevent deformation after injection and to reinforce strength.

[0068] The thicker the ribs (10c, 10d) are, the more advantageous it is for strength reinforcement, but if the thickness is too great, there is a problem of shrinkage occurring during injection molding.

[0069] Since the bottom surface of the central support member (10a) is not visible to the user, shrinkage during injection molding does not affect the aesthetic appearance.

[0070] However, since the bottom surface of the lid flange portion (10b) is a part visible to the user, if the thickness of the rib (10d) of the lid flange portion (10b) is too thick and shrinkage occurs during injection molding, a striped pattern is formed on the bottom surface of the lid flange portion (10b), which degrades the aesthetic appearance.

[0071] Therefore, there is a problem in that it is difficult to form a thick rib (10d) formed on the upper surface of the lid flange portion (10b). If the rib (10d) of the lid flange portion (10b) is formed thinly in this way, the strength of the lid flange portion (10b) is weakened, causing the lid flange portion (10b) to bend and the lid to not close.

[0072] In the case of this embodiment, the strength of the lid flange portion (10b) can be reinforced by attaching the driving support member (110) to the upper part of the lid flange portion (10b). In addition, The thickness of the rib (10d) of the lid flange portion (10b) can be reduced, thereby preventing the formation of stripes on the bottom surface of the lid flange portion (10b) due to shrinkage during injection molding of the inner lid portion (10), and thus improving the aesthetic appearance.

[0073] FIG. 7 is a plan view showing the state in which the locking member (20) is positioned at the lower part of the inner lid portion (10).

[0074] The locking member (20) is formed in a ring shape, and the outer edge (20b) and inner edge (20c) of the locking member (20) are indicated by thick dotted lines, and the driving motor (121) is provided in the outer area of ​​the outer edge (20b).

[0075] Heat generated from a heat source can be transferred to the central support portion (10a), which is the upper part of the inner lid portion (10) corresponding to the inner part (20a) of the ring shape. The heat source may be a heater (not shown) coupled to the lower part of the inner lid portion (10), or food inside the inner pot that generates heat during cooking.

[0076] The heat generated from the heater is transferred to the upper surface of the central support member (10a) at a position corresponding to the interior (20a) of the ring shape.

[0077] When the drive motor (121) is positioned on the upper surface of the central support member (10a), heat generated during cooking and warming is continuously transferred to the drive motor (121), causing the temperature of the drive motor (121) to rise rapidly. Due to this temperature rise, the characteristics of the coil provided inside the drive motor (121) change. If this change in coil characteristics continues over a long period, it reduces the durability of the drive motor (121), and the drive motor (121) does not operate normally due to a short circuit in the coil during operation.

[0078] In this embodiment, the drive motor (121) is provided on the upper surface of the lid flange portion (10b), which is the outer area of ​​the outer rim (20b), thereby preventing heat from the heat source from being transferred to the drive motor (121) during cooking and warming, and thus preventing the durability of the drive motor (121) from decreasing.

[0079] In addition, if the drive unit (100) including the drive motor (121) is provided on the upper surface of the lid flange portion (10b) which is at a lower position than the central support portion (10a), the overall height of the lid can be lowered, thereby enabling the realization of a compact electric cooker (1).

[0080] Referring to FIGS. 8 and 9, the operation of the locking member (20) according to the operation of the driving unit (100) will be explained.

[0081] FIG. 8 shows the locking member (20) in a locked state, and FIG. 9 shows the locking member (20) in an unlocked state.

[0082] As shown in FIG. 8, when the user touches the touch button provided on the display unit to open the lid while the locking member (20) is locked, the driving motor (121) is driven and the driving gear (123) rotates clockwise. Due to the rotation of the driving gear (123), the driven gear (130) moves linearly to the right from the state of FIG. 8 and moves linearly to the position shown in FIG. 9.

[0083] In this case, since the driven gear flange portion (130e) of the driven gear (130) and the connecting projection (23a) of the locking member (20) are coupled by the driven gear fastening member (151), the locking member (20) is guided along the inside of the arc-shaped slot (15a) formed in front of the inner lid portion (10) and rotates counterclockwise as the driven gear (130) moves linearly.

[0084] Additionally, the driven gear fastening member (151) is configured to pass through the driven gear through hole (130f) of the driven gear flange portion (130e). Accordingly, when the driven gear fastening member (151) rotates along the inside of the arc-shaped elongated hole (15a), the driving linkage portion (30a) surrounding the fastening member through portion (30d) is engaged with the driven gear fastening member (151), and the driving linkage portion (30a) of the rotating base (30) rotates counterclockwise around the rotation center portion (30c) along the rotational trajectory of the arc-shaped elongated hole (15a).

[0085] At the same time, the lever linkage part (30b) of the rotation base (30) also rotates counterclockwise around the rotation center part (30c), and as the linkage projection (32) of the lever linkage part (30b) moves to the left inside the crank hole (41), the position is changed forward by the rotation of the linkage projection (32). In addition, the lift lever (40) is guided by the guide projection (g) inserted inside the guide slot (44) and moves straight forward.

[0086] In this case, the locking projection (22) of the locking member (20) is in a state of being constrained at the bottom of the flange portion of the inner pot, and when the locking member (20) rotates counterclockwise to an unlocking angle, the locking projection (22) is positioned in the space between adjacent flange portions of the inner pot, thereby unlocking the lid and allowing the lid to be opened.

[0087] When the user touches the touch button provided on the display unit for cooking in the state of FIG. 9, the drive motor (121) is driven, causing the drive gear (123) to rotate counterclockwise. Due to the rotation of the drive gear (123), the driven gear (130) moves linearly to the left in the state of FIG. 9 and moves linearly to the position shown in FIG. 8.

[0088] As the driven gear (130) moves linearly, the locking member (20) is guided along the inside of the arc-shaped slot (15a) formed in front of the inner lid (10) and rotates clockwise.

[0089] Additionally, when the driven gear fastening member (151) rotates along the inside of the arc-shaped elongated hole (15a), the driving linkage part (30a) of the rotation base (30) on the driven gear fastening member (151) rotates clockwise around the rotation center part (30c) along the rotation trajectory of the arc-shaped elongated hole (15a).

[0090] At the same time, the lever linkage part (30b) of the rotation base (30) also rotates clockwise around the rotation center part (30c), and as the linkage projection (32) of the lever linkage part (30b) moves to the right inside the crank hole (41), the position is changed to the rear by the rotation of the linkage projection (32). In addition, the lift lever (40) is guided by the guide projection (g) inserted inside the guide slot (44) and moves linearly to the rear.

[0091] In this case, the locking projection (22) of the locking member (20) is located in the space between adjacent flange portions of the inner pot, and then, by rotating the locking member (20), is positioned at the bottom of the flange portion of the inner pot, thereby locking the lid so that it cannot be opened.

[0092] With the above configuration, the user can lock or unlock the lid with simple operation, thereby improving user convenience.

[0093] In addition, since the locking handle protruding from the upper surface of the lid is unnecessary, the aesthetic appearance can be improved, and a larger area can be secured on the upper surface of the lid to implement a display unit, thereby expanding the range of utilization of the upper area of ​​the lid.

[0094] In addition, since a locking handle is unnecessary, the gap formed when a locking handle is attached to the lid can be eliminated, thereby minimizing the ingress of water and foreign substances.

[0095] In addition, since a locking handle is unnecessary, it prevents users from accidentally misoperating the handle due to carelessness, thereby preventing safety accidents.

[0096] As described above, although the present invention has been explained in detail with reference to preferred embodiments, the present invention is not limited to the aforementioned embodiments, and it is possible to implement it with various modifications within the scope of the claims, the detailed description of the invention, and the attached drawings, and such modifications are also included in the present invention. Explanation of the symbols

[0097] 1 : Electric cooker 10 : Inner lid 14: Support projection 15a, 15b, 15c, 15d: Arc-shaped slot 16: Hinge connection part 17: Inner lid fastening boss 18a, 18b: Magnetic material sensing part 19: End part 20 : Locking member 20a : Interior 20b: Outer border 20c: Inner border 22 : Locking projection 23a, 23b, 23c, 23d : Connecting projection 24a, 24b: Magnetic material 30: Rotating base 30a: Drive linkage unit 30b: Lever linkage unit 30c: Center of rotation 30d: Fastening member penetration 32 : Interlocking projection 40 : Lift lever 40a: Lever body 40b: Connecting body 41 : Crank hole 42 : Safety pin restraint hole 43 : Lift projection 50 : Safety pin 100 : Driving unit 110 : Driving support member 111 : Bottom part 111a : Support member fastening hole 111b : Support member fastening boss 112 : Side wall 112a : Rail section 120 : Drive module 121 : Drive motor 122 : Gearbox 122a : Gearbox mounting hole 123 : Drive gear 123a: Driving gear teeth 130: Driven gear 130a: Driven gear body 130b: Driven gear teeth 130c: Guide groove 130d: Guide rib 130e: Driven gear flange 130f: Driven gear through hole 130g : Flange connection part 140 : Drive gear fastening member 140a : Head portion 151 : Driven gear fastening member 152: Gearbox fastening member 153: Guide projection fastening member

Claims

Claim 1 An electric cooker comprising: a main body equipped with an inner pot for receiving food; a lid comprising an inner lid portion coupled to the upper part of the main body and located on the upper part of the inner pot, and an outer lid portion covering the upper part of the inner lid portion; a locking member coupled to the inner lid portion to lock or unlock the lid relative to the main body; a driving motor provided in the outer region of the outer rim of the locking member, which applies driving force to the locking member to lock or unlock the locking member; a rotating base that rotates around a rotation center portion according to the linear movement of a driven gear; and a lift lever connected to the rotating base that moves linearly according to the rotation of the rotating base to raise and lower a pressure regulating member for regulating the pressure inside the inner pot; wherein a driving gear and a driven gear composed of a pinion and a rack are provided to transmit the rotation of the driving motor to the locking member, and the driven gear moves linearly by the rotation of the driving gear. Claim 2 An electric cooker according to claim 1, wherein the locking member is formed in a ring shape and is rotatably coupled to the inner lid portion; and the driving motor is located in the outer region of the ring shape. Claim 3 delete Claim 4 An electric cooker according to claim 1, wherein one side of the driven gear has a driven gear tooth formed thereon that meshes with the driving gear, and the other side of the driven gear is coupled to the locking member by a driven gear fastening member, so that the locking member rotates by the linear movement of the driven gear. Claim 5 In claim 4, the electric cooker is characterized in that a driven gear flange portion is formed on the other side of the driven gear, through which a driven gear fastening member passes; and the driven gear through hole is formed as an elongated hole having a length in a direction perpendicular to the linear movement of the driven gear. Claim 6 A main body equipped with an inner pot for receiving food; a lid comprising an inner lid portion coupled to the upper part of the main body and located on the upper part of the inner pot, and an outer lid portion covering the upper part of the inner lid portion; a locking member coupled to the inner lid portion to lock or unlock the lid relative to the main body; and a driving motor provided in the outer region of the outer edge of the locking member, which applies driving force to the locking member to lock or unlock the locking member. It includes, for transmitting the rotation of the drive motor to the locking member, a drive gear consisting of a pinion and a rack and a driven gear are provided, and the driven gear moves linearly by the rotation of the drive gear; on one side of the driven gear, a driven gear tooth that meshes with the drive gear is formed, and on the other side of the driven gear, the driven gear is coupled to the locking member by a driven gear fastening member, so that the locking member rotates by the linear movement of the driven gear; on the inner lid part, an arc-shaped elongated hole is formed to penetrate from top to bottom; on the other side of the driven gear, a driven gear flange part is formed with a driven gear through hole through which the driven gear fastening member passes; the driven gear flange part is located on the upper part of the arc-shaped elongated hole; and in a state where a connecting projection protruding from the upper surface of the inner lid part is inserted to penetrate the arc-shaped elongated hole, the connecting projection and the An electric cooker in which the rotation of the locking member is guided during the linear movement of the driven gear by the coupled flange portion of the driven gear. Claim 7 delete Claim 8 In claim 1, the rotary base comprises a drive linkage part extending from one side of the rotation center part and linked to the driven gear, and a lever linkage part extending from the other side of the rotation center part and linked to the lift lever; the driven gear and the locking member are coupled by a driven gear fastening member; and the driven gear fastening member sequentially passes through a driven gear through hole formed to penetrate the driven gear, a fastening member through part formed in the drive linkage part, and an arc-shaped elongated hole formed to penetrate the inner lid part, and then is coupled to a connecting projection formed on the locking member. Claim 9 An electric cooker according to claim 1, wherein a drive gear for transmitting the rotation of the drive motor to the locking member and a drive support member for supporting a gearbox connected to the drive gear to change the rotational speed of the drive motor are provided; and wherein the drive support member is coupled to the upper surface of the inner lid portion. Claim 10 In claim 9, the electric cooker is characterized in that the driven gear is guided by the driving support member and moves linearly. Claim 11 A main body equipped with an inner pot for receiving food; a lid comprising an inner lid portion coupled to the upper part of the main body and located on the upper part of the inner pot, and an outer lid portion covering the upper part of the inner lid portion; a locking member coupled to the inner lid portion to lock or unlock the lid relative to the main body; and a driving motor provided in the outer region of the outer edge of the locking member, which applies driving force to the locking member to lock or unlock the locking member. An electric cooker comprising: a drive gear for transmitting the rotation of the drive motor to the locking member; a drive support member for supporting a gearbox connected to the drive gear to change the rotational speed of the drive motor; the drive support member is coupled to the upper surface of the inner lid portion; a drive gear consisting of a pinion and a rack and a driven gear are provided to transmit the rotation of the drive motor to the locking member; the driven gear is guided by the drive support member and moves linearly; the drive support member includes a bottom portion formed in a flat plate shape to support the drive gear and the gearbox, and a rail portion extending upward from the edge of the bottom portion and formed long along the linear movement direction of the driven gear; and the upper end of the rail portion is inserted into a guide groove concavely formed on the bottom surface of the driven gear so as to guide the linear movement of the driven gear. Claim 12 In claim 11, an electric cooker is characterized in that a guide rib is formed on the bottom surface of the driven gear and protrudes downward along the longitudinal direction of the guide groove so as to be located inside the guide groove; and the bottom surface of the guide rib contacts the upper surface of the rail portion when the driven gear moves linearly. Claim 13 An electric cooker according to claim 1, comprising: a drive gear for transmitting the rotation of the drive motor to the locking member; a drive gear shaft penetrating the center of the drive gear vertically; a driven gear meshing with the drive gear to transmit the rotation of the drive gear to the locking member; and a drive gear fastening member coupled to the drive gear shaft, wherein the head portion is positioned above the drive gear and the driven gear to prevent the drive gear and the driven gear from disengaging upward. Claim 14 The electric cooker according to claim 1, wherein the inner lid portion comprises a central support portion having an open lower portion and a convex upper portion formed so as to accommodate the ring-shaped locking member inside, and a lid flange portion extending forward from at least a portion of the edge of the central support portion to support the drive motor. Claim 15 In claim 14, an electric cooker comprising: a gearbox connected to the drive motor to change the rotational speed of the drive motor; a drive support member supporting the drive motor and the gearbox; and a gearbox fastening member penetrating the gearbox and coupling the drive support member to the upper surface of the lid flange portion.

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