WO2019203444A1 - Module loquet, procédé de commande d'un module loquet et appareil de cuisson auquel s'appliquent lesdits module et procédé - Google Patents

Module loquet, procédé de commande d'un module loquet et appareil de cuisson auquel s'appliquent lesdits module et procédé Download PDF

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Publication number
WO2019203444A1
WO2019203444A1 PCT/KR2019/002921 KR2019002921W WO2019203444A1 WO 2019203444 A1 WO2019203444 A1 WO 2019203444A1 KR 2019002921 W KR2019002921 W KR 2019002921W WO 2019203444 A1 WO2019203444 A1 WO 2019203444A1
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WO
WIPO (PCT)
Prior art keywords
latch
cam
door
contact
basic position
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/KR2019/002921
Other languages
English (en)
Korean (ko)
Inventor
신명준
김정길
신장모
정성호
이상기
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LG Electronics Inc
Original Assignee
LG Electronics Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from KR1020180044152A external-priority patent/KR101971273B1/ko
Priority claimed from KR1020180044153A external-priority patent/KR102001224B1/ko
Priority claimed from KR1020180044151A external-priority patent/KR102040222B1/ko
Application filed by LG Electronics Inc filed Critical LG Electronics Inc
Priority to CN201980026380.7A priority Critical patent/CN112041524B/zh
Priority to AU2019256071A priority patent/AU2019256071B2/en
Publication of WO2019203444A1 publication Critical patent/WO2019203444A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B15/00—Other details of locks; Parts for engagement by bolts of fastening devices
    • E05B15/04—Spring arrangements in locks
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B17/00—Accessories in connection with locks
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B47/00—Operating or controlling locks or other fastening devices by electric or magnetic means
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B47/00—Operating or controlling locks or other fastening devices by electric or magnetic means
    • E05B47/02—Movement of the bolt by electromagnetic means; Adaptation of locks, latches, or parts thereof, for movement of the bolt by electromagnetic means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C15/00—Details
    • F24C15/02—Doors specially adapted for stoves or ranges
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/64—Heating using microwaves

Definitions

  • the present invention relates to a latch module incorporating an automatic opening function and a hanging lock function, a control method of the latch module, and a cooking appliance to which the latch module is applied.
  • Cooking apparatuses such as ovens and microwave ovens generally have a rectangular parallelepiped appearance, and an interior cooking chamber is opened forward and a door is provided in front of the cooking chamber.
  • the door may be open in various ways, but a hinged door is pivotally rotated around a rotating shaft and is widely used. Most doors of this type are provided with handles or grooves that a user can grip.
  • the self-cleaning function is added to the cooking apparatus so that the cooking chamber can be easily cleaned.
  • Self-cleaning is a function of heating the inside of the cooking chamber to a high temperature so as to burn foods attached to the inner wall of the cooking chamber or to be called with high temperature water vapor so that it can be conveniently removed when cleaning.
  • the doors of the cooker should be closed tightly during the self-cleaning operation.
  • Patent Documents 1 and 2 disclose an operation structure of a hook for keeping the door tightly closed while the self cleaning operation is performed. They rotate a drive such as a motor and apply a linkage structure, while the door must remain closed while the door is kept closed, the hook is held by the drive to keep the hook in the door, and the door no longer remains closed. When not needed, the drive reactivates the hook to release the hook from the door.
  • a drive such as a motor and apply a linkage structure
  • the door lock device maintains a state in which the door is closed even after the hook is released from the door, and the door does not open automatically.
  • the door lock of the prior art has a structure that is independent of the automatic opening of the door.
  • the conventional cooking appliance has a drive source (motor) and a power transmission structure for providing power for the automatic opening of the door, and a drive source (motor) and power transmission structure for providing power for firmly locking the door as in Patent Documents 1 and 2. It was provided separately.
  • the driving control is also complicated, and more switches for locating parts driving the door control module need to be installed. Increasing the number of installation of the switch not only increases the volume of the door control module, but also increases the cost.
  • incorporating such a function requires a process of initializing the door control module upon initial power supply to the cooker.
  • an unintended operation such as an accidentally automatic opening of the door is performed in the process of initializing the door control module, the user may be mistaken for a malfunction or failure. Therefore, the door control module should not automatically open the door in the process of initializing the door control module.
  • Patent Document 1 US registered patent publication US7726294 (Patent Document 1) and published patent publication US2007 / 0296224A1 (Patent Document 2).
  • the present invention has been made to solve the above-described problems, the latch module that implements the manual locking function of the door and the locking function of the door for the self-cleaning operation of the cooking chamber in one latch, and to provide a cooking apparatus using the same
  • the latch module that implements the manual locking function of the door and the locking function of the door for the self-cleaning operation of the cooking chamber in one latch
  • Another object of the present invention is to provide a latch module which implements both a manual opening and closing function of a door, an automatic opening function, and a secure lock function, and a cooking appliance to which the same latch is operated.
  • the present invention by operating a latch with one drive source and a power transmission structure, the latch module that implements both the manual opening and closing function of the door and the automatic opening and secure lock function, and the cooking appliance to which the same It aims to provide.
  • an object of the present invention is to provide a latch module that can implement the locking function and release of the door accurately by kinematic interference between parts while implementing two functions in one latch, and a cooking appliance to which the same is applied.
  • an object of the present invention is to provide a structure capable of precise control of the latch module while minimizing the number of installation of the switch, a control method thereof, and a cooking appliance using the same.
  • an object of the present invention is to provide a structure of a latch module, and a control method thereof, in which there is no fear that an operation that may be mistaken for a malfunction or a failure occurs in an initial driving process of the cooking appliance.
  • the present invention provides a main body 10 having a cooking chamber (cavity) therein, a door (20) for opening and closing an open front of the cooking chamber (cavity), and an opening / closing rotating shaft (314) serving as a rotation center of the opening / closing movement of the door. It can be applied to a cooking appliance (home appliance), including.
  • the opening and closing rotation shaft 314 is located at the front lower portion of the main body 10 and pivotally connects the door 20 to the main body about a horizontal rotating shaft extending in the left and right directions. Accordingly, the door may have a pull down structure in which the door is lowered and opened forward with respect to the rotation axis.
  • the door may be connected to the main body by a hinge module 300 including the opening and closing rotation shaft 314.
  • the hinge module 300 elastically biases the door in the opening direction od (see FIGS. 1 and 10) in the initial opening angle range 0 to a1, and the opening angle of the door exceeds the initial opening angle a1.
  • the door can be elastically added in the closing direction cd (see FIGS. 1 and 12).
  • the door may be opened by its own weight at the initial opening angle a1 position and begins to be attenuated by the damper 350 at the damping intrusion angle a2 which is greater than the initial opening angle a1 so that the full opening angle ( The opening speed is controlled up to a3) and can be opened slowly.
  • the cooking appliance may have a self-cleaning function of heating the inside of the cooking chamber to a high temperature. Accordingly, a structure is applied to completely lock the door and prevent the door from being opened while performing the self cleaning function.
  • the cooking appliance may further apply a structure for automatically opening the door by a user's command input. At the same time, it is possible to maintain a state in which the door can be opened and closed manually.
  • the latch module 4 may be installed at an upper portion of the main body 10, and a pin having a locking structure that is caught or released from the latch 50 of the latch module 4 at an upper portion of the rear surface of the door 20. 22) may be provided.
  • the position where the latch 50 can move may include a first basic position, a second basic position, and a third basic position.
  • the first basic position and the third basic position may be positions in which the latch 50 is caught by the latching structure 22 to maintain the door 20 in a closed state.
  • the second basic position may be a position where the latch 50 is not caught by the locking structure 22.
  • the first basic position is a position where the latch 50 is released from the locking structure 22 to open the door when an external force is applied to the door 20, while the third basic position is the door 20. Even if an external force is applied to the door 20 in the direction in which the latch is opened, the latch 50 may be in a position that maintains the latched structure 22 and the locked state.
  • the latch may be moved to any one of three positions by the control unit. That is, the controller may control the position of the latch.
  • the hinge module may force the door 20 in the open direction in a position where the door 20 is closed. Therefore, the door 20 may be opened by the force of the hinge module when the latch 50 is in the second basic position.
  • the latch module 4 of the present invention for solving the above problems, the bracket 40 which is the base of the latch module; A latch (50) installed on the bracket (40) so as to be rotatable (rotational movement) about a pivot shaft portion (54) and having a hook portion (51) for hanging the pin (22); An elastic body (90) added to rotate the latch (50) in a first direction; A drive unit (60) configured to provide power for the latch (50) to overcome the elastic force of the elastic body and to rotate in a second direction opposite to the first direction; And a power transmission unit 70 transmitting power of the driving unit 60 to the latch 50.
  • the hook portion is opened toward the first direction, and a hooking surface 52 engaged with the rear surface of the pin is provided inside the hook portion.
  • an insertion inclined surface 53 may be provided on a surface of the hook portion that faces the locking surface 52.
  • the locking surface 52 may include a release slope 521 disposed closer to the first direction and a locking surface 522 disposed closer to the second direction. These two surfaces 521 and 522 are connected to each other by a smooth curved surface so that the sliding of the pins on these two surfaces is smooth.
  • the part of the engaging surface 52 which a pin contacts is changed.
  • the pin 22 is in contact with the release inclined surface 521 or in contact with the locking lock surface 522 in accordance with the rotational position of the latch 50.
  • the release slope 521 is a surface inclined in the opening direction of the door toward the first direction at the rotational position of the latch in which the release slope 521 contacts the pin 22.
  • the insertion inclined surface 53 is inclined in the closing direction of the door toward the first direction at the rotational position of the latch in which the insertion inclined surface 53 is in contact with the pin 22. Has a surface.
  • the insertion inclination surface 53 may be provided not only in a range facing the departure slope surface 521, but also in a range facing the walking lock surface 522. That is, it is possible to close an open door regardless of what position the latch is in (manual locked position and latched locked position).
  • the elastic body In a typical state, the elastic body is involved in the operation of the latch for manual opening and closing operation.
  • a fully locked state i.e., a locked state, in which the user cannot manually open the door for self-cleaning or the like, the pins of the door come into contact with the locked surface 522.
  • a locked state in which the latch 50 is rotated further in the first direction than the manual locked state so that the pin of the door is relatively deeper into the hook portion (actually the pin remains and the hook portion rotates more).
  • the hook locking surface 522 may have a surface that is inclined in the closing direction of the door toward the first direction. Then, the force applied by the pin of the door to the hook portion when the user pulls the door causes the hook portion to further rotate in the first direction. In other words, the more the user attempts to open the door, the more the pin goes deep into the hook portion. In other words, the more the user attempts to open the door, the more the hook part locks.
  • the locking surface 522 has a surface perpendicular to the opening direction of the door, similar results are obtained. In other words, no matter how open the door, such force does not lead to the rotation of the latch.
  • the elasticity of the elastic body contributes to the locking in the locked position by walking in the manual locking position.
  • the present invention implements a locking part and a fully hookable part on the hooking surface 52 of the latch part of the latch for opening / closing operation of the door, but the pins of the door are two parts according to the rotational displacement of the latch.
  • the automatic opening operation of the door and the locking operation of the door can be implemented with one latch, one driving unit for driving the same, and a power transmission unit.
  • the power transmission unit is a cam 70 in contact with the contact surface 55 provided on the side of the latch 50, the center of rotation 71 of the cam 70 is more than the side of the latch 50 in contact with the cam It can be located in one direction. Then, the position of the latch can be determined by varying the radius of the cam contacting the latch 50 according to the rotational displacement of the cam.
  • the elastic body is in a state in which the latch is elastically supported so as to rotate in the first direction, and the center of rotation 711 of the cam 70 is located in the first direction more than the latch, so that the latch is formed according to the radius of the cam in contact with the latch.
  • the limit to move in the direction can be determined.
  • the latch can move in the second direction while overcoming the elasticity of the elastic body.
  • the force to overcome the elastic body disappears, the latch is rotated back by the elastic body to the position contacting the cam in the first direction.
  • the combination of the elastic body 90 which elastically presses the latch in the first direction and the cam 70 positioned in the first direction more than the latch can adjust the radius of the cam in contact with the latch very easily to adjust the basic position of the latch.
  • the basic position adjustment of the latch is to determine whether the pin 22 of the door is in contact with the release slope 521 and the locking lock surface 522 on the engaging surface 52 of the hook portion 51 of the latch. This can be
  • the cam 70 may include radial portions 731, 732, and 733 having at least three different radii from the outer circumference thereof to the circumferential direction.
  • the first radius portion 731 allows the latch to be in the first basic position
  • the second radius portion 732 allows the latch to be in the second basic position
  • the third radius portion 733 has the latch to the third basic position. To be.
  • the second basic position may be reached. If the latch is moved in the first direction w1 from the first basic position, the latch may be moved to the third basic position. Can be reached.
  • the first radius portion 731 which is a reference, may allow the latch 50 to be in a normal basic position, that is, a position where the user can manually open and close the door (manual locked position). In the position where the first radius portion 731 is in contact with the contact surface of the latch 50, the pin of the door is in contact with the escape slope 521 of the hook portion 51 of the latch 50.
  • the second radius portion 732 has a larger radius than the first radius portion 731.
  • the second radius portion is connected to the first radius portion and the connection surface 734 of the smooth curved surface. Therefore, when the cam rotates in the first rotation direction c1 so that the contact portion between the cam and the latch moves to the second radius portion, the basic position of the latch 50 moves further in the second direction w2. do. In the state where the second radius portion is in contact with the latch, the hook portion of the latch moves to the open position, and can no longer engage the pin 22 of the door. That is, the pin is relatively out of the hook portion.
  • the door is elastically added by the hinge module 300 to open up to the initial opening angle a1, and is fully opened by its own weight.
  • the third radius portion 733 has a smaller radius than the first radius portion 731.
  • the third radius portion is connected to the first radius portion and the connection surface 734 of the smooth curved surface. Therefore, when the cam rotates in the second rotational direction c2 (opposite to the first rotational direction) so that the contact portion between the cam and the latch moves from the first radius to the third radius, the basic position of the latch 50 is moved to the elastic body. As a result, it is further moved in the first direction w1 to move to the locking position. In the state where the latch is in contact with the third radius portion, the hook portion hooks the pin of the door to a deeper position. That is, the pin of the door is in contact with the locking surface 522 of the hook portion 51 of the latch 50.
  • the operation of moving the latch 50 from the first basic position to the third basic position may be performed by the elastic body 90.
  • the latch 50 is caught in the first basic position due to an inconvenient situation, the latch 50 is moved from the first basic position to the third basic only by the elastic force applied by the elastic body 90 in the first direction w1. There is a fear that the location will not move to the location.
  • the present invention provides that, while the cam rotates from the first mode to the third mode, the surface of the cam and the latch are mechanically interfered, so that the power of the drive portion is driven by the latch in the first basic position. It further provides a structure that is delivered to the latch to act in the direction of movement to the basic position.
  • the cam is in the third mode state and the latch is also located in the third basic position, thereby preventing the latch from deviating from the third basic position to the first basic position by kinematic interference between the cam and the latch. to provide.
  • the latch 50 of the present invention further provides an interfering extension 58 that can mechanically interfere with the cam.
  • the interference extension 58 approaches the surface of the cam 70 as the latch 50 moves in the first direction, and the cam 70 as the latch 50 moves in the second direction.
  • an interference surface 59 away from the surface of the substrate.
  • the interference extension The part 58 should not interfere with the manual opening and closing rotation of the latch 50.
  • the cam surface facing the interference surface 59 is not affected by the interference surface (even if the latch 50 moves from the first basic position to the second basic position).
  • 59 may have a radius rM1 that allows movement to approach the cam surface.
  • the distance dmp is a radius rM1 of the cam surface facing the interference surface 59 in a state where the first radius portion 731 of the cam is in contact with the contact surface 55 of the latch 50. May be greater than).
  • the distance op between the position op of the interference surface 59 and the center of rotation 71 of the cam 70 with the cam in the first mode and the latch 50 in the second basic position. dop) is equal to or greater than the radius rM1 of the cam surface facing the interference surface 59 in a state where the first radius portion 731 of the cam is in contact with the contact surface 55 of the latch 50. Can be.
  • the cam surface facing the interference surface 59 is formed in the first radius portion. 731, the third radius portion 733 or the connection surface 734 connecting the first radius portion 731 and the third radius portion 733.
  • the cam is rotated in the first rotational direction c1 in the first mode position to provide a second position.
  • the interference extension 58 moves in the direction of approaching the cam, and in the process, the interference extension 58 should not come into contact with or interfere with the cam.
  • the interference surface 59 is the cam. It shall not interfere with the surface of 70.
  • the interference surface 59 is the first radius portion of the cam 70. 731, and the interference surface 59 may not contact the surface of the cam 70.
  • the distance dop between the position op of the interference surface 59 and the center of rotation 71 of the cam 70 in the state where the latch 50 is in the second basic position is determined by the first position of the cam.
  • the second radius portion 732 may be equal to or larger than the radius rM2 of the cam surface facing the interference surface 59 in a state where the second radius portion 732 is in contact with the contact surface 55 of the latch 50.
  • the cam is rotated from the first mode position in the second rotation direction c2 to reach the third mode position so that the latch moves from the first basic position to the third basic position (hanging locked position).
  • the cam interferes with the interference extension 58 of the latch to move the latch in the first direction w1.
  • the interference surface 59 is rotated while the cam rotates and the point of contact with the contact surface 55 of the latch 50 moves from the first radius portion 731 to the third radius portion 733.
  • the position mp of the interference surface 59 and the center of rotation 71 of the cam 70 with the radius of the surface of the cam 70 facing the latch 50 in the first basic position It can be set to exceed the distance (dmp) of.
  • the radius rM3 of the cam surface facing the interference surface 59 in the state where the third radius portion 733 of the cam is in contact with the contact surface 55 of the latch 50 is equal to the latch.
  • the distance dmp between the position mp of the interference surface 59 and the center of rotation 71 of the cam 70 may be larger.
  • the cam surface facing the interference surface 59 is the second radius portion 732. Can be.
  • the radius rM3 of the cam surface facing the interference surface 59 in the state where the third radius portion 733 of the cam is in contact with the contact surface 55 of the latch 50 is defined by the latch ( If the distance dlp is substantially equal to the distance dlp between the position lp of the interference surface 59 and the center of rotation 71 of the cam 70 with 50 in the third basic position, the latch engages and locks. In the state of being in the position, the latch is rotated in the second direction w2 by an unforced external force, which can be fundamentally prevented by the interference between the interference surface 59 and the cam.
  • the second radius portion is positioned on either side of the first radius portion 731 (manual locking contact surface), and the third radius portion is positioned on the other side of the first radius portion, and the cam
  • the driving unit may be a motor 60 that can rotate in both directions.
  • the cam may be directly connected to the rotating shaft 61 of the motor.
  • both the automatic opening of the door and the fully engaged locking operation are implemented with one latch, which is determined by the base position of the latch, which can be determined by the cam.
  • the latch contacts the cam in the order of the first radius part ⁇ the second radius part ⁇ the third radius part ⁇ the first radius part, or the first radius part ⁇ the third radius part.
  • ⁇ the second radius is in contact with the cam in the order of the first radius.
  • the latch is in contact with the cam in the order of the first radius part ⁇ the second radius part ⁇ the third radius part ⁇ the first radius part, the door is automatically opened before the door is locked, so that the door is locked. It is difficult.
  • the latch if the latch is in contact with the cam in the order of the first radius part ⁇ the third radius part ⁇ the second radius part ⁇ the first radius part, the door must be opened by automatic opening after the door locking function is performed. . Therefore, if you want to use a motor that can rotate only in one direction, the latch is installed so that the motor rotates in a direction that can contact the cam in the order of the first radius portion ⁇ the third radius portion ⁇ the second radius portion ⁇ the first radius portion. It is preferable.
  • the rotational displacement of the cam can be controlled by causing the switches 81 and 82 provided around the cam to be pressed or released as the cam rotates.
  • the switches 81 and 82 are pressed, the switches are turned on, and when the buttons of the switches are released, the switches may be turned off.
  • each of the three It is conceivable to install two switches and to have one push projection for pressing the switch on the cam. That is, the first radius can be in contact with the latch when the first switch is pressed, the second radius is in contact with the latch when the second switch is pressed, and the third radius can be in contact with the latch when the third switch is pressed. There will be. Then, the motor continues to rotate in the state that no switch is pressed, the control of the rotation is stopped when the switch is pressed, it is possible to adjust the basic position of the latch.
  • the latch module may further include a first switch 81 and a second switch 82 installed on the bracket 40.
  • the cam 70 has a first mode of pressing both the first switch 81 and the second switch 82 according to the rotational position of the cam, and presses the first switch 81 to press the second switch.
  • the cam 70 may further include a switch push profile 72 that may implement the four modes, separately from the latch positioning profile 73.
  • the first radius portion 731 is in contact with the latch 50.
  • the second radius portion 732 contacts the latch 50.
  • the third radius portion 733 may be in contact with the latch 50.
  • the first switch 81 and the second switch 82 may be located at substantially the same distance with respect to the rotation center 71 of the cam 70.
  • the switch pressing profile 72 may press the first switch 81 or press the second switch 82 or the first switch 81 and the second switch 82 according to the rotational position of the cam.
  • the first pusher 721 which does not press all of them, and the first switch 81 or the second switch 82 or the first switch 81 and the first switch 81 are pressed according to the rotational position of the cam.
  • the second push protrusion 722 may not include all of the two switches 82.
  • the cam is positioned in a first mode range in which the first pressing protrusion 721 and the second pressing protrusion 722 press the first switch 81 and the second switch 82 simultaneously, respectively, according to the rotation angle thereof.
  • the second pusher 722 presses the first switch 81 and the first pusher 721 is positioned in a second mode range in which the second switch 82 does not press the first switch 81, or the first pusher 721 is not pressed.
  • the pusher 721 presses the second switch 82 and the second pusher 722 is located in a third mode range in which the first switch 81 is not pressed, or the first pusher 721.
  • the second push protrusion 722 may be located in a fourth mode range in which both the first switch 81 and the second switch 82 are not pressed.
  • the button 811 of the first switch 81 and the button 821 of the second switch 82 have a predetermined angle b with respect to the rotation center 71 of the cam, and the first pressing of the cam
  • the protrusion 721 and the second push protrusion 722 may also have a predetermined angle b with respect to the rotation center 71 of the cam.
  • the angle b is such that the two switches 81 and 82 are not disposed on the same straight line passing through the center of rotation 71 of the cam, and the two push protrusions 721 and 722 are positioned at the center of rotation 71 of the cam. It may be less than 180 degrees so as not to be disposed on the same straight line. Preferably the angle may be more than 90 degrees less than 180 degrees or obtuse angle. More preferably, the angle may be about 120 degrees.
  • the first radius portion 731 contacts the latch 50, the first switch is pressed, and the second switch is not pressed.
  • the third radius portion 733 may be in contact with the latch.
  • the latch module includes the automatic opening operation control of the door, the locking locking operation control of the door, and the locking unlocking operation control of the door.
  • the automatic opening operation control of the door rotates the cam 70 in the first rotation direction c1 in one of the modes to change the cam 70 to the other mode and then rotates the cam 70. Stop and return the cam 70 to one of the modes by rotating the cam 70 in the second rotation direction c2 opposite to the first rotation direction c2 in the other mode.
  • the door is automatically opened through the control to stop the rotation of the cam 70.
  • the door lock operation control of the door rotates the cam 70 in the second rotation direction c2 in one of the modes to change the cam 70 to the another mode, and then rotates the cam 70. Lock the door through the control to stop it, preventing the user from opening the door manually.
  • the door lock release operation control of the door is performed by rotating the cam 70 in the first rotation direction c1 in the another mode to change the cam 70 to any one of the modes of the cam 70.
  • the control to stop the rotation unlocks the door and returns to the state where the door can be opened and closed manually.
  • control method of the latch module of the present invention further includes a position search and initialization control sequence of the cam of the latch module.
  • This search and initialization control may be executed when the cam is in the other mode (fourth mode) in the initial driving stage of the latch module.
  • the cam 70 is rotated in the second rotation direction c2.
  • the initial search drive step of rotating the cam 70 in the second direction in the fourth mode is performed, there is no fear that an error of opening the door occurs.
  • the cam is changed from one mode (fourth mode) to the one mode (first mode) or to another mode (third mode).
  • the cam When the cam is changed from the other mode (the fourth mode) to the another mode (the third mode), the cam is rotated in the first rotation direction c1.
  • the cam 70 then changes to one mode (first mode) after passing through the other mode (fourth mode). In this manner, when the first mode is reached, driving of the cam is terminated.
  • the cam 70 While the user is using the latch module installed in the cooking apparatus, there is no fear that the cam will be in another mode (second mode) in the initial search drive step, but in the product production step, for example, once in the initial search drive step, It may be in two modes. At this time, after the cam is changed to another mode in the initial search drive step, the cam 70 is further rotated in the second rotation direction c2, and thus the cam 70 is in one mode (first mode). ), The cam 70 may be terminated.
  • the present invention further provides a cooking appliance to which the latch module and its control method are applied.
  • the present invention can be applied not only to a cooking appliance, but also to a home appliance including a main body having a cavity and a door that opens and closes it.
  • the manual locking function and the locking function for the self-cleaning operation of the door can be implemented in one latch.
  • the latch module structure of the present invention it is possible to implement both the automatic opening function of the door and the locking function of the door while applying one latch, one driving unit, and one power transmission unit.
  • the latch module structure of the present invention it is possible to open and close manually by the elastic body, and to be locked by the elastic body, while the interference structure of the latch and the cam to complement the locking function of the elastic body, Even if an abnormality occurs in the operation, the door can be securely hooked and locked by the cam.
  • the latch module structure of the present invention it is possible to prevent the phenomenon that the latch in the locked state due to the interference between the cam and the latch is unwound by an undesired external force. And all these operations can be implemented with one latch and one cam.
  • the latch module structure of the present invention it is possible to control the automatic opening of the door and the locking control of the door through two switches and simple control.
  • the initial cam and latch positions can be searched only by a simple control algorithm, and there is no fear that the door is inadvertently opened during the search.
  • FIG. 1 is a side view showing an embodiment of a cooking appliance to which a latch module according to the present invention is applied.
  • Figure 2 is a perspective view of the hinge module for connecting the door and the main body of the cooking appliance of the present invention.
  • FIG. 3 is a side view of FIG. 2.
  • FIG. 4 is a perspective view showing an embodiment of a latch module according to the present invention.
  • FIG. 5 is an exploded perspective view of the latch module of FIG. 4.
  • FIG. 6 is a plan view of the latch of the latch module of FIG.
  • FIG. 7 is a plan view of the cam of the latch module of FIG.
  • FIG. 8 is a graph illustrating a radius (latch positioning profile) of the cam for each angular position of the cam of FIG. 7.
  • FIG. 9A is a bottom view of a part of the cooker in which the latch module of FIG. 4 is installed
  • FIG. 9B is a plan view showing a cam and a part of the latch contacting the door, and the door in a state where the latch is in the manual locked position. Figure showing the state of pins and hanging.
  • FIG. 10 is a view illustrating a state in which the latch is moved to an open position by operating the latch module of FIG. 9.
  • FIG. 11 is a view illustrating a state in which a door is opened to an initial opening angle due to pin release from the latch module of FIG. 10.
  • FIG. 12 is a view illustrating a state in which the latch module of FIG. 11 operates and the latch is in the manual locked position while the pin is released.
  • FIG. 13 is a view illustrating a state in which the latch module of FIG. 9 operates to move a latch to a locked position.
  • FIG. 14 is a graph showing the position of a part in contact with the latch in the latch position adjustment profile of the cam together with the mode of the cam according to the switch pressing profile.
  • Fig. 15 shows the first case where the cam is in the fourth mode.
  • 18 is a diagram briefly showing an algorithm for searching an initial position of a cam.
  • 19 is a diagram illustrating a control system of the controller.
  • the home appliance an oven which is a cooking appliance is illustrated.
  • the home appliance of the present invention is not limited to the cooking appliance, and the cooking appliance is not limited to the oven.
  • the cooking appliance includes a main body 10 having an approximately rectangular parallelepiped shape and having a front open and empty inside, and a door 20 installed in front of the main body 10.
  • the main body 10 has an outer housing (shown in FIG. 1 with the outer housing omitted to show the internal structure) forming the overall appearance of the cooking appliance, and a cavity installed inside the outer housing and opened forwardly. It includes an inner housing 11 is provided. The cavity constitutes a cooking chamber. Upper, lower, rear, and side portions of the main body 10 are provided with various components necessary for the operation of the cooking appliance.
  • the door 20 has a pull-down opening and closing structure having a horizontal hinge axis 314 (see FIGS. 2 and 3) at a lower end of the door. In other words, the door 20 is rotated to the front lower portion with respect to the main body and opened, and is rotated to the rear upper portion and closed.
  • the area of the door 20 may be an area that merely opens or closes the front of the cooking chamber, but may also be an area that covers both the cooking chamber and the front of the upper chamber of the cooking chamber as shown.
  • a display and a touch panel may be installed on the front surface of the door 20 corresponding to the upper space of the cooking chamber. As shown in FIG. 19, the display and the touch panel are connected to the controller 80.
  • the control unit may be installed in the door 20 corresponding to the upper space of the cooking chamber or the upper space of the cooking chamber.
  • the upper side of the main body 10 maintains the door 20 in a closed state, and manually opens or closes the door 20, automatically opens the door 20, or hangs the door 20 to hold the door 20.
  • a rear surface of the door 20 includes a pin 22 that is caught or released by the hook portion 51 of the latch 50 of the latch module 4, and the pin 22 is provided and the hook portion is provided.
  • An accommodation portion 21 is provided that provides a space for accommodating the 51 (see Figs. 9, 10 and 13).
  • the latch module 4 is installed on the upper portion of the main body 10, and the front end portion of the latch 50 of the latch module 4, that is, the hook portion 51, protrudes further forward than the front surface of the main body 10. (See FIGS. 9-13).
  • the latch module 4 may be installed at one upper side of the door or both upper sides of the door, and the pin 22 and the receiving part 21 of the door may be provided correspondingly.
  • a hinge module 300 provided with a spring 323, a damper 350, and a subspring 370 is connected to the front lower portion of the main body and the lower portion of the door.
  • the spring 323 urges the door in a direction in which the door 20 rotates upward rearward, that is, in a direction of closing the door. Accordingly, the spring 323 prevents the door from being opened hard when the door is opened and lowered.
  • damper 350 attenuates the rotational force of the door when the door is opened to allow the door to open slowly. If necessary, the damper 350 may provide a damping force only when the door is opened, or may provide a damping force in both the opening and closing directions of the door. In addition, the damping force may be provided in all rotation angle sections in which the door is opened and closed, or the damping force may be provided in some sections of the rotation angle range.
  • the damper 350 may attenuate the opening force of the door in a predetermined opening angle section of the door, and may not provide a damping force in a section outside the opening angle.
  • a structure in which the damper 350 operates in an opening angle section corresponding to a2 to a3 of FIG. 1 is illustrated.
  • the damping intrusion angle a2 at which the attenuation starts as the door is opened may be 35 ⁇ 5 °.
  • the subspring 370 adds the door in the direction in which the door 20 is opened.
  • the opening angle range in which the subspring 370 opens the door may be 0 ° to a1.
  • the latch module 4 When the user inputs a door opening command by touching a display or the like installed on the front of the door, the latch module 4 to be described later operates to release the jammed state of the closed door. The door is then opened by the subspring 370 to the initial opening angle a1.
  • the predetermined angle a1 may be set to such an extent that the door may open by itself.
  • the angle a1 may be, for example, about 10 °.
  • the hinge module 300 connecting the main body 10 and the door 20 has a door bar 340 fixed to the door 20 and a housing 310 fixed to the main body 10 to open and close a rotating shaft ( 314).
  • the inner link housing 330 is provided inside the housing 310 to move along the longitudinal direction of the housing.
  • the front end of the inner link housing 330 is hinged at the door bar 340 and the door bar connection hinge 331. Since the door bar connection hinge 331 is eccentric by a distance of r from the opening / closing rotation shaft 314, when the door 20 (door bar 340) is opened, the door bar connection hinge 331 pivots about the opening / closing rotation shaft 314 and moves forward. Accordingly, the inner link housing 330 also moves forward in the housing 310.
  • the connecting hinge 331 also rotates about 90 degrees around the opening and closing rotation shaft 314.
  • the inner link housing 330 also moves forward by the horizontal distance d3 at which the open / close rotation shaft 314 rotates 90 degrees.
  • An interpolation pin 361 is installed in front of the inner link housing 330.
  • the slot pins 362 provided in front of the interpolation pins 361 are fitted into the interpolation pin guide slots 333 formed in the front and rear directions on both sides of the inner link housing 330. Accordingly, the interpolation pin 361 is installed to be slidably moved forward and backward with respect to the inner link housing 330 within a range allowed by the guide slot 333.
  • the subspring 370 is extrapolated to the interpolation pin 361.
  • the front of the subspring 370 is supported by the slot pin 362 and the rear is supported by the inner link housing 330. Therefore, the subspring 370 adds the slot pin 362 to the front.
  • the contact surface part 363 of the slot pin 362 presses the inclined surface provided at the rear of the lower end of the door bar 340 to the front. Since the height at which the slot pin 362 pushes the inclined surface forward is higher than the opening / closing rotation shaft 314, the opening of the door, that is, the door bar 340 stands vertically as shown in FIGS. 2 and 3.
  • the subspring 370 adds the door bar 340 in a direction to rotate the door bar 340 forward and downward. Accordingly, the door is opened to the initial opening angle a1 by the subspring 370 at the initial opening of the door. After the slot pin 362 has moved to the foremost end of the interpolation pin guide slot 333, the subspring 370 can no longer press the door bar 340.
  • the force of the subspring 370 in the door opening direction is greater than the force in the door closing direction of the spring 323. Since the force is greater, in the section in which the opening angle of the door reaches the initial opening angle a1 from the closed state, the door is biased in the opening direction.
  • the pin 22 is transmitted to the hook portion 51 of the latch 50 to be described later by the opening force of the sub-spring 370, so as to move the latch 50 in the second direction, which will be described later. Since the elastic body 90 has a greater force for applying the latch 50 in the first direction w1, when the latch 50 is in the manually locked state, the door despite the open force of the subspring of the hinge module, Will remain closed.
  • the door bar 340 rotates with respect to the housing 310, and the damping force and the opening disturbance force are transmitted to the door bar 340 by the damper 350 and the spring 323 which will be described later.
  • a spring interpolation pin 320 is installed at the rear of the inner link housing 330.
  • the spring interpolation pin 320 is connected through the rear portion of the inner link housing 330 and the inner housing joint pin 322. Both ends of the inner housing joint pin 322 are fitted to the joint pin guide slot 315 provided in the housing 310.
  • Joint pin guide slot 315 is the shape of a long hole extending along the longitudinal direction of the housing (310).
  • the spring interpolation pin 320 is extrapolated with a compression coil spring 323 having a strong elasticity.
  • the spring interpolation pin 320 may slide through the spring stopping plate 311 fixed to the housing 310 along the longitudinal direction of the housing 310, but the front end of the compression coil spring 323 may be The spring catching plate 311 of the housing 310 is caught.
  • a support pin 312 for additionally supporting the spring catching plate 311 may be further installed in the housing 310 to support the force of the compression coil spring 323.
  • a spring support pin 321 for fixing the rear end of the spring 323 is provided on the rear end of the spring interpolation pin 320.
  • the spring support pin 321 does not interfere with the housing 310.
  • the inner housing joint pin 322 is guided by the guide slot 315 of the housing 310 and the inner link housing 330 and the spring interpolation pin 320 move forward.
  • the spring 323 is compressed between the spring stopping plate 311 and the spring support pin 321, and the elastic force is gradually increased.
  • the compression length of the spring 323 corresponds to the horizontal movement distance d3 of the opening and closing rotation shaft 314, and when the opening angle of the door is small, the elastic force of the spring 323 is small, but the opening angle of the door is large. Accordingly, the elastic force of the spring 323 also increases.
  • the elastic force acts in a direction that prevents the door from opening.
  • the biasing force pushed by the spring 323 in the direction of closing the door becomes larger as the opening angle a1 to a3 of the door increases.
  • the force applied by the spring 323 at the opening angle a1 of the door is smaller than the force (opening force) to open the door by itself due to the weight of the door at the opening angle a1, so that the subspring 370 opens the opening angle a1.
  • the door pushed to the door will open by itself.
  • a damper 350 is installed inside the inner link housing 330.
  • the piston 351 of the damper 350 is supported by the damper pressing surface 332 integrally fixed to the inner link housing 330.
  • the cylinder 352 is extrapolated to the piston 351.
  • a slot 353 into which the damper support pin 313 fixed to the housing 310 is inserted is provided at an upper portion of the cylinder 352. That is, the cylinder 352 may move back and forth by the length of the slot 353. 3 shows the position between the slot 353 of the damper 350 and the damper support pin 313 of the housing 310 with the door closed.
  • the damper 350 is also damper pressing surface 332 of the inner link housing 330. To move forward together. As the damper is pushed forward, the damper pressing surface 332 pushes the piston 351 of the damper 350 forward, but the slot 353 of the cylinder 352 is not yet caught by the damper support pin 313. Thus, the damper 350 moves forward with the inner link housing 330, but does not generate any damping force.
  • the maximum damping distance (Lmax) inherent to the damper 350 is the distance that the inner link housing 330 moves while the damping force is applied to the door (d3). -d2) or higher.
  • the door bar connecting hinge 331 While the closed door is opened to a2, the door bar connecting hinge 331 also rotates by a2, and thus the inner link housing 330 and the spring interpolation pin 320 move forward by d2. While traveling by the distance of d2, the slot 353 of the damper 350 moves on the damper support pin 313, so that the damper is not pressed. That is, in the section in which the opening angle of the door reaches from 0 to a2, the elastic force of the spring 323 acts in the opposite direction to the opening force of the door to control the opening speed of the door.
  • the door bar connecting hinge 331 While the closed door is opened to a3, the door bar connecting hinge 331 also rotates by a3, and thus the inner link housing 330 and the spring interpolation pin 320 move forward by d3. In other words, the spring 323 is compressed by d3. That is, the elastic force of the spring 323 acts in the opposite direction to the opening force of the door to control the opening speed of the door, up to a section in which the opening angle of the door reaches 0 to a3.
  • the maximum opening angle a3 may be regulated by the joint pin guide slot 315 of the housing 310 that regulates the slide movement distance of the inner housing joint pin 322.
  • the angle range in which the damper 350 attenuates the opening force of the door may be started when the door is about 30 ° to 40 ° and continues until approximately 90 °. Then, the door is opened by the subspring 370 to the initial opening angle a1, and then slowly accelerated and opened by its own weight, and then slowly opened by the damper's damping force when it reaches a2 (about 30 ° to 40 °). Can be. This opening of the door allows the user to feel secure.
  • the attenuation begins too early with the door open, the waiting time for the door to open is too long, causing discomfort.
  • the attenuation of the door begins too late, the door opens too quickly to the extent that the door is opened to a considerable extent, which may cause a user to be surprised or uncomfortable, and may be injured by hitting the fast opening door.
  • the damping inclination angle a2 at which the damper 350 starts to dampen the opening force of the door is preferably 35 ⁇ 5 °.
  • the damping force may last up to 90 ° when the door is fully open, or up to 85 ° about 5 ° less. If the damping force is fully applied until the door is fully opened, it may be considered that the damping force does not act after 85 ° in order to avoid the possibility that the door will not open completely and open about 1-2 degrees less.
  • the attenuation intrusion angle a2 is set larger than the forced opening angle a1.
  • the interval between the forced opening angle a1 and the damping intrusion angle a2, that is, 10 ° or more and 30 to 40 ° or less, is a section in which the door is opened by itself without being damped by any damper 350.
  • the elastic force of the spring 323 described above acts in the direction of hindering the opening of the door, so that the phenomenon of rapid acceleration of the door in the section open by itself by itself is sufficiently prevented.
  • Applying such an automatic door opening structure can reduce the user's anxiety, improve the quality sensitivity, and can delete the handle protruding toward the front of the door can provide an excellent aesthetic in particular when built-in installation.
  • FIGS. 4 to 13 a latch module capable of automatically opening a door of the cooking appliance according to the present invention or completely locking the door will be described with reference to FIGS. 4 to 13.
  • the latch module 4 of the present invention comprises a bracket 40 which is the overall foundation.
  • the bracket 40 may be manufactured from sheet metal.
  • the edge portion of the rectangular plate-shaped metal sheet is bent downwardly or upwardly, thereby allowing the latch module 4 to be fixed to another component, and various components (drive unit 60) on the bracket 40. ),
  • An elastic body 90 and the like are provided.
  • the bracket 40 may restrict a section in which the cam receiving hole 42 which provides a space in which the cam 70 as the power transmission unit is accommodated and the latch 50 which is rotatably installed in the bracket 40 rotate.
  • a circular arc hole 41 is provided.
  • the bracket 40 is rotatably installed in the bracket 40.
  • the latch 50 has a structure in which a long metal flat plate is bent, and a pivot shaft portion 54 which is a center of rotation of the latch 50 with respect to the bracket 40 is provided at the rear end of the latch 50. As the pivot shaft (not shown) is installed in the pivot shaft portion 54, the latch 50 is rotatably installed with respect to the bracket 40.
  • the second half of the latch 50 including the pivot shaft portion 54 is disposed above the bracket 40.
  • one side of the latch 50 disposed above the bracket 40 has a contact surface 55 contacting the latch positioning profile 73 of the cam 70 and, in some cases, interferes with the cam to latch 50.
  • An interference extension 58 is provided to kinematically compensate for the operation error.
  • the interference extension 58 extends laterally from the contact surface 55, whereby the contact surface 55 and the interference extension 58 have an L-shape as a whole.
  • An intermediate part of the latch 50 is bent downwardly and is provided with an insertion part 56 penetrating through the arc hole 41 of the bracket 40.
  • the circular arc hole 41 has a size that can accommodate the trajectory of the latch 50 in the state in which the insertion portion 56 is fitted into the circular arc hole 41.
  • An arcuate sliding bead surface 43 supporting the rotation of the latch 50 is provided at a position closer to the pivot shaft portion 54 than the arc hole 41 in the bracket 40.
  • the sliding bead surface 43 has a convex shape protruding from the surface of the bracket 40, the contact surface and the bottom surface of the latch 50, the surface of the bracket 40 and the latch 50 is in direct contact with the friction Prevent this from happening.
  • the front end of the insertion portion 56 is bent forward again to extend forward in the horizontal direction, and the hook portion 51 is provided at the front end of the latch 50.
  • the hook portion 51 is caught or released from the pin 22 of the door.
  • the latch 50 is provided with a hole 57 for hanging the end of the spring 90, which is an elastic body.
  • One end of the spring 90 is fixed to the hole 57, the other end is fixed to the bracket (40). Accordingly, the spring 90 pulls the latch 50 toward the spring.
  • the spring 90 is arranged in the first direction of the rotational direction of the latch 50 rather than the latch 50, and adds the latch 50 to rotate in the first direction.
  • the cam 70 is rotatably installed in the first direction from the latch 50.
  • the shaft hole 71 which is the rotation center of the cam 70 penetrates up and down, and thus the cam 70 has a vertical axis of rotation.
  • the cam 70 is installed at a position passing through the cam receiving hole 42 of the bracket 40. Accordingly, the upper portion of the cam 70 is exposed to the upper portion of the bracket 40, and the lower portion of the cam 70 is exposed to the lower portion of the bracket 40.
  • the cam 70 has a latch positioning profile 73 for adjusting the position of the latch 50 in the rotational direction in contact with the contact surface 55 of the latch 50 described above, and switches 81 and 82 to be described later. ) And a switch push profile 72 to press or release.
  • the latch positioning profile 73 is provided at the top of the cam, and the switch pressing profile 72 is provided at the bottom of the cam.
  • the latch positioning profile 73 is exposed to the upper portion of the bracket 40 to contact the contact surface 55 of the latch 50, and the switch The pressing profile 72 is exposed to the lower portion of the bracket 40 to press or release the switches 81 and 82 to be described below installed at the lower portion of the bracket 40.
  • the material of the cam 70 may be a synthetic resin having good strength and heat resistance, for example, PPS (Poly Phenylene Sulfide) material. Accordingly, it is possible to minimize sliding wear of the cam and ensure stability in a high temperature cooking appliance environment.
  • PPS Poly Phenylene Sulfide
  • the cam 70 is rotationally driven by a motor 60 that is a drive unit.
  • the cam 70 may be directly connected to the rotation shaft 61 of the motor 60.
  • the motor 60 may be a bidirectional rotation motor capable of both forward rotation and reverse rotation.
  • the motor 60 is fixed to the upper portion of the bracket 40 so that the rotating shaft 61 is downward, the rotating shaft 61 is inserted into the shaft hole 71 of the cam 70.
  • the first switch 81 and the second switch 82 are installed below the bracket 40.
  • the first switch and the second switch may be micro switches having buttons 811 and 812.
  • the buttons 811, 812 of the switches installed in the bracket protrude approximately to the center of the cam.
  • the buttons 811 and 812 may be disposed at about 90 ° or more and less than 180 ° based on the rotation center 71 of the cam, and may be disposed at the same distance from the rotation center of the cam. .
  • the angle (b) may be 110 ° to 160 °, about 120 ° is appropriate.
  • the front end portion of the latch 50 that is, the hook portion 51 provided at the front end portion is open to the side, specifically, in the first direction w1 of the rotation of the latch 50.
  • a locking surface 52 that engages with the rear surface of the pin 22 of the door is provided inside the hook portion 51.
  • the locking surface 52 includes a departure slope surface 521 and the locking locking surface 522.
  • the release slope 521 is disposed closer to the first direction on the locking surface 52
  • the locking lock surface 522 is disposed closer to the second direction on the locking surface 52. That is, the locking locking surface 522 is disposed deeper than the release slope 521 is deeper than the hook portion (51).
  • the release slope 521 is in the first direction. As it goes, it has a surface inclined in the opening direction of the door.
  • the locking lock surface 522 is It has a surface inclined toward the first direction toward the first direction or perpendicular to the opening direction of the door.
  • the part where the release slope 521 and the hanging lock surface 522 are connected is connected in a smooth curved shape, so that the back surface of the pin 22 that is in contact with the release slope 521 rotates the latch 50.
  • the sliding to the locking surface 522 toward the sliding can be made smoothly.
  • the latch is moved by the elastic force of the spring, which is an elastic body, the smoother the sliding, the more the latch can be moved.
  • the insertion inclined surface 53 is provided on the opposite surface of the hook portion 51 facing the release slope 521.
  • the insertion inclined surface 53 has a surface inclined toward the closing direction of the door toward the first direction when the latch 50 is located in the manual locked position. This insertion inclined surface 53 comes into contact with the surface of the pin 22 of the door when the latch is in the manual locked position. That is, by the release slope 521 and the insertion slope 53, the hook portion 51 has a form that becomes thinner gradually toward the end, that is, a pointed shape.
  • the side of the latch 50 is provided with a contact surface 55 in contact with the cam.
  • the contact surface 55 is disposed in the second direction w2 from the center of rotation of the cam.
  • One end of the contact surface 55 is further provided with an interference extension 58 extending outward from the contact surface 55.
  • the interference extension 58 and the contact surface 55 form an L-shape as a whole, and the contact surface 55 and the interference extension 58 are disposed to surround the cam 70.
  • An interference surface 59 facing the cam in the lateral direction to the extension direction of the interference extension 58 is in contact with and interferes with the surface of the cam.
  • the interference surface 59 is further protruded from the interference extension 58 so that portions of the interference extension 58 other than the interference surface 59 do not interfere with the cam.
  • the interference surface 59 approaches the surface of the cam 70 when the latch 50 rotates in the first direction.
  • the interference surface 59 moves in a direction away from the cam.
  • the interference extension 58 is not necessarily manufactured integrally with the body portion of the latch 50, but may be assembled after being manufactured as a separate component. And the interference extension 58 should not behave like a rigid body with the body portion of the latch 50, while the latch is moved from the first basic position to the third basic position, and While the latch is in the third basic position, it is sufficient if such a force is transmitted to the body portion of the latch 50 when the cam pushes the interference extension 58 to rotate in the first direction.
  • the radius of the cam portion facing the interference surface 59 of the latch increases. do.
  • the interference surface 59 An opposing cam portion interferes with the interference surface and pushes the interference surface away from the cam so that the latch is forcibly rotated in the first direction.
  • the distance dmp between the center of rotation of the cam and the interference surface when the latch is in the first basic position and the distance dop between the center of rotation of the cam and the interference surface when the latch is in the second basic position And the distance dlp between the center of rotation of the cam and the interference surface when the latch is in the third basic position has a relationship of dop ⁇ dmp ⁇ dlp.
  • the latch positioning profile 73 of the cam 70 has three surfaces having different radii, that is, a manual locking contact 731, an automatic open contact 732, and A hanging lock contact surface 733 is provided. These three faces have different radii, between which are interconnected by connecting faces 734 with increasing or decreasing radii.
  • the manual locking contact 731 includes a first radius portion.
  • the first radius portion has a radius such that the latch 50 is positioned at a position where the door can be opened and closed manually in contact with the latch 50.
  • the pin 22 of the door is in contact with the detachment slope 521 or the insertion slope 53 of the hook portion 51. Accordingly, when the spring 90 pulls the latch 50 in the first direction, and the manual locking contact of the cam contacts the latch 50 (see FIG. 9 or FIG. 12), the user opens the door in the opening direction. Pulling may open the door, and the door may close when the user closes the door.
  • the automatic open contact surface 732 includes a second radius portion.
  • the second radius portion has a radius capable of rotating the latch 50 in the second direction to a position where the latch 50 does not interfere with the pin 22 of the door in a state in which the latch 50 is in contact with the latch 50.
  • the second radius has a larger radius than the first radius. That is, in the state in which the spring 90 pulls the latch 50 in the first direction and the auto-opening contact surface of the cam contacts the latch 50 (see FIG. 10 or FIG. 11), the pin 22 of the door 20 ) Does not interfere with the latch 20.
  • the locking locking surface 733 includes a third radius portion.
  • the third radius portion has a radius such that the latch 50 locks the door completely in contact with the latch 50 so that the door does not open even when the door is pulled out.
  • the pin 22 of the door comes into contact with the locking locking surface 522 of the hook portion 51. Accordingly, even when the user pulls the door in the open direction while the spring 90 pulls the latch 50 in the first direction and the hook locking surface of the cam contacts the latch 50 (see FIG. 13).
  • the door will not open. That is, such a state may be referred to as a fully locked state for self cleaning.
  • the diameter rM3 of the cam surface portion facing (59) has a relationship of rM2 ⁇ rM1 < rM3.
  • the cam surface portion facing the interference surface 59 may include the first radius portion 731, the third radius portion 733, or It may be a connection surface 734 connecting the first radius portion 731 and the third radius portion 733.
  • the cam surface portion facing the interference surface 59 is the first radius portion 731 (see Figs. 9 and 12).
  • the cam surface portion facing the interference surface 59 in the second mode state where the second radius portion is in contact with the contact surface of the latch may be the first radius portion 731 (FIG. 10, See FIG. 11).
  • the cam surface portion facing the interference surface 59 in the third mode state in which the third radius portion is in contact with the contact surface of the latch may be the second radius portion 732 (see FIG. 13).
  • the radius rM1 of the surface is the distance dmp between the position mp of the interference surface 59 and the center of rotation 71 of the cam 70 with the latch 50 in the first basic position. Less than or equal to the distance (dop) between the position (op) of the interference surface (59) and the center of rotation (71) of the cam (70) with the latch (50) in the second basic position. Smaller than that That is, rM1 ⁇ dop ⁇ dmp.
  • the radius rM2 of the surface is the distance dop between the position op of the interference surface 59 and the center of rotation 71 of the cam 70 with the latch 50 in the second basic position. Is less than or equal to). That is, rM2 ⁇ dop.
  • the third radial portion 733 of the cam faces the interference surface 59 in a third mode state in a position in contact with the contact surface 55 of the latch 50.
  • the radius rM3 of the cam surface is between the position mp of the interference surface 59 and the center of rotation 71 of the cam 70 with the latch 50 in the first basic position.
  • the distance dlp between the position lp of the interference surface 59 and the center of rotation 71 of the cam 70 with the latch 50 in the third basic position. Is less than or equal to That is, dmp ⁇ rM3 ⁇ dlp.
  • the switch pressing profile 72 of the cam 70 has two pressing protrusions having substantially the same radius.
  • the first pressing protrusion 721 and the second pressing protrusion 722 are not arranged in a straight line, but are positioned with an obtuse angle.
  • the angle between the two push protrusions may correspond to the angle between the buttons 811 and 812 of the first switch and the second switch, and the radius of the two push protrusions may press or release the button as the cam rotates.
  • the first pusher may press the first switch, or the second switch may not press both switches depending on the rotational position, and the second pusher may press the first switch or press the second switch according to the rotational position. Both switches may not be pressed.
  • the first pusher pushes the first switch and the second pusher pushes the second switch, that is, the two pusher pushes the two switches.
  • the first mode state in which all the presses are pressed the second mode in which the second pusher presses the first switch and the first pusher does not press the switch, the third mode in which the first pusher presses the second switch and the first pusher does not press the switch State, a fourth mode state in which neither pusher presses both switches can be implemented.
  • Each mode of the switch pressing profile 72 and the latch positioning profile 73 may be associated with each other. That is, in the first mode, the manual locking contact 731 contacts the latch so that the latch is in the manual locked state, and in the second mode, the automatic open contact 732 contacts the latch so that the latch is in the open position. In the third mode, the locking locking surface 733 may be in contact with the latch so that the latch is in the locking locking position.
  • the latch module exists as shown in FIG. That is, while the two push protrusions 721 and 722 hold the buttons 811 and 812 of the two switches, respectively, the manual locking contact surface 731, which is the first radius of the latch positioning profile 73, It is in contact with the contact surface 55.
  • the spring 90 pulls the latch 50 in the first direction (the direction in which the hook portion on the drawing is intended to rotate to the left).
  • the back surface of the pin 22 presses the release slope 521 of the hook portion 51. Since the release slope 521 is inclined outward toward the first direction, the hook portion 51 is forced in the second direction by the force of the pin 22 pressing the release slope, and thus the latch 50 is spring-loaded. ) Is rotated in the second direction (when the latch 50 is rotated in the second direction, the contact surface 55 of the latch is temporarily separated from the manual locking contact surface 731). Then, the interference of the hook portion 51 which has been engaged with the pin 22 is released, thereby opening the door.
  • the interference extension 58 does not interfere with the cam while the latch rotates in the second direction for manual opening of the door. It can rotate freely in a second direction.
  • the interference extension 58 does not interfere with the cam while the latch rotates in the second direction for the manual closing of the door. It can rotate freely in the direction.
  • the latch can be normally operated by the user by manually pulling the door to open the door or pushing the door toward the main body to close the door.
  • the second pusher 722 pushes the first switch 81 as shown in FIG. 10. In the state, the first push protrusion 721 is in a position not to press the second switch 82.
  • the latch Since the latch is elastically supported in the direction of contact with the cam by the spring, while the cam is rotating, the latch is rotated corresponding to the radius of the latch positioning profile 73 while being in contact with the latch positioning profile 73 of the cam. .
  • the cam rotates by the angle b in the first rotation direction c1
  • the position of the latch positioning profile 73 in contact with the contact surface 55 of the latch 50 is automatically opened from the manual locking contact 731. It moves to 732 (it gradually grows around 250 degrees of FIG. 8, and moves to 20 degrees vicinity).
  • the cam overcomes elasticity of the spring and moves the contact surface 55 of the latch in the second direction (w2). Pushed out). As a result, the interference of the hook portion which has interfered with the pin 22 of the door is released.
  • the radius dM2 of the cam surface facing the interference surface 59 is the distance dmp between the interference surface 59 and the center of rotation of the cam.
  • Conditions smaller than ⁇ op) are continuously satisfied. Accordingly, in the process of rotating the cam in the first rotation direction c1 for the automatic opening of the door as described above, and thus the latch is rotated in the second direction w2, the interference extension 58 does not interfere with the cam.
  • the latch can rotate freely in the second direction.
  • the latch Since the subspring 370 of the hinge module 300 is elastically added in the direction of opening the door in a state in which the door is closed, that is, the opening angle is 0 degrees, the latch is moved in the second direction by the cam as shown in FIG. 10. The door moves in the opening direction od in a state in which the hook portion 51 no longer interferes with the pin 22 by turning to w2. Since the subspring 370 of the hinge module 300 is elastically biased in the direction of opening the door in the state where the opening angle is 0 degree, the operation of opening the door is such that interference of the pin of the hook portion 51 is released. It happens instantly.
  • the elastic force of the sub spring 370 of the hinge module is transmitted to the hook unit 51 so that the latch ( In a position where the sum of the force for moving the 50 in the second direction and the force of the drive unit 60 is greater than the force that the elastic body 90 forces the latch 50 in the first direction w1, the It can be said that the door is opened.
  • the door when the door is opened by the initial opening angle a1, the door is automatically opened by its own weight.
  • the bidirectional rotation motor 60 rotates in another direction, that is, the second rotation direction, so that the cam 70 rotates in the second rotation direction c2 as shown in FIG. 11.
  • pressing of the first switch 81 of the second push protrusion 722 is released.
  • Rotation of the cam 70 in the second rotation direction c2 is continued until the two push protrusions 721 and 722 press the two switches 81 and 82 as shown in FIG. 12. That is, the cam 70 is stopped after rotating in the second rotation direction c2 by the angle b of the two pressing protrusions.
  • the automatic opening operation as described above may be performed continuously. That is, when the automatic opening command of the door is input in the state as shown in FIG. 9, the cam rotates in the first rotation direction c1 to the positions shown in FIGS. 10 and 11 by the angle b, whereby the second push protrusion When the first switch is pressed, the cam immediately rotates again in the second rotation direction c2 to return to the state of FIG. 9. In this way, the automatic opening command of the door rotates the cam 70 in the first mode by the angle b1 in the first rotation direction c1 to move to the second mode, and immediately returns to the first mode. . That is, according to the automatic opening command of the door, the cam operates in the order of the first mode ⁇ the first rotational direction rotation (fourth mode) ⁇ the second mode ⁇ the second rotational direction rotation (fourth mode) ⁇ the first mode. .
  • the controller 80 checks whether the door is closed through the door sensor 88. When it is confirmed that the door is in a closed state, the control unit controls the bidirectional rotation motor 60 to rotate in the second rotation direction such that the cam 70 rotates in the second rotation direction c2. This releases the pressed state of the two switches, and the cam 70 continues to rotate. Rotation of the cam 70 continues until the first pusher 721 presses the second switch 82 as shown in FIG. 13. When the first push protrusion 721 presses the second switch 82, the bidirectional rotary motor 60 is stopped by the controller 80, and thus the rotation of the cam in the second rotation direction c2 is also stopped. . That is, the cam 70 is stopped after rotating in the second rotation direction c2 by the angle b of the two pressing protrusions.
  • the first pusher 721 pushes the second switch 82 as shown in FIG. 13.
  • the second push protrusion 722 is in a position not to press the first switch 81.
  • the latch Since the latch is elastically supported in the direction of contact with the cam by the spring, while the cam is rotating, the latch is rotated corresponding to the radius of the latch positioning profile 73 while being in contact with the latch positioning profile 73 of the cam. .
  • the cam rotates by the angle b in the second rotational direction c2
  • the position of the latch positioning profile 73 in contact with the contact surface 55 of the latch 50 is hooked on the manual locking contact surface 731. It moves to 733 (it gradually becomes small and moves to around 110 degrees in the vicinity of 250 degrees of FIG. 8). Accordingly, since the radius of the cam in contact with the latch varies smaller from the first radius portion to the third radius portion, the spring 90 further holds the latch 50 in the first direction w1 as shown in FIG. 13. Pull.
  • the pin 22 of the door enters deeper into the hook portion 51 such that the rear surface of the pin 22 is in contact with the locking surface 522.
  • the boundary between the release slope 521 and the locking surface 522 forms a smooth curve, and thus the spring 90 ) Pulls the latch 50, whereby the pin 22 also naturally moves relative to the locking surface 522 from the escape slope 521.
  • Movement of the latch in the first direction is caused by the elasticity of the spring 90. Therefore, if the pin of the door does not completely enter the hook portion, but is caught on the end of the hook portion, or the rotation of the latch is stiff or hung due to foreign matters, the cam is rotated in the second rotation direction c2 and Even when moving from the first mode to the third mode, there is a possibility that the latch does not reach the third basic position from the first basic position.
  • dop ⁇ dmp ⁇ rM3 ⁇ dlp That is, while the cam rotates and the point where the contact with the contact surface 55 of the latch 50 moves from the first radius portion 731 to the third radius portion 733, faces the interference surface 59.
  • the radius of the surface of the cam 70 is the distance between the position mp of the interference surface 59 and the center of rotation 71 of the cam 70 with the latch 50 in the first basic position. (dmp) is exceeded.
  • the latch can surely reach the third basic position, and even if the latch located at the third basic position attempts to rotate in the second direction w2 under an external force, Since the cam is already in contact with the interference surface 59 of the latch, rotation of the latch in the second direction is reliably prevented by kinematic interference.
  • the self cleaning operation is performed.
  • the cavity is heated up to about 400 degrees Celsius and lasts for a few minutes.
  • the cavity internal temperature is measured by the temperature sensor 85. And even when the self-cleaning operation is completed, the temperature inside the cavity is continuously monitored by the control unit until the temperature inside drops.
  • the controller rotates the bidirectional rotation motor 60 in the first rotation direction, and rotates the cam 70 in the first rotation direction c1.
  • the pressing of the second switch 82 of the first pressing protrusion 721 is released.
  • Rotation of the cam 70 in the first rotation direction c1 continues until the two push protrusions 721 and 722 press the two switches 81 and 82, as shown in FIG. That is, the cam 70 is stopped after rotating in the first rotation direction c1 by the angle b of the two pressing protrusions.
  • the self-cleaning command rotates the cam 70 in the first mode by the angle of rotation b in the second rotation direction c2 and moves to the third mode.
  • the self-cleaning command returns to the first mode. Will return. That is, according to the door self-cleaning command, the cam operates in the order of the first mode ⁇ the second rotational direction (fourth mode) ⁇ the third mode ⁇ the first rotational direction rotation (the fourth mode) ⁇ the first mode. do.
  • only one latch, one driving unit, and one power transmission unit can implement both the manual locked state of the door, the automatic opening operation of the door, and the locking operation of the door.
  • the latch module has a manual winding position, an automatic opening position, depending on which radius portion 731, 732, 733 of the latch positioning profile 73 of the cam 70 abuts on the contact surface 55 of the latch 50. There are three basic positions of the locking position.
  • the controller 80 has four modes of the two switches 81 and 82 (the first mode of the position range in which both switches are pressed, the second mode of the position range in which the first switch is pressed only, and the second mode of the position range in which the second switch is pressed only.
  • the rotation direction and the rotation of the bidirectional rotation motor are determined, thereby controlling the rotation angle and the rotation of the cam.
  • the above control detects the position of the cam and controls the rotation of the cam based on the state in which at least one switch is pressed, that is, the first mode, the second mode, and the third mode.
  • the controller checks which mode of the first to fourth modes the current cam position is.
  • the present invention performs a process of initializing the position when the state of the current cam and latch can not be grasped in the initial operation stage of the cooking appliance. This may be a location search and initial location setting process.
  • the position search and initial position setting process can search the initial position by grasping the switch which is first pressed by rotating the cam in one direction. For example, when the switch in the fourth mode is rotated in one direction to reach one of the first mode M1, the second mode M2, and the third mode M3, the cam and the latch are located. do.
  • the door module is integrated with the automatic opening function of the latch module, when the control unit reaches the second mode M2 while searching for the initial position of the cam, the door is automatically opened. That is, the second mode M2 must not be reached while the cam is rotated to determine the initial position of the cam.
  • the switches 81 and 82 are arranged to have a predetermined angle b so that the buttons 811 and 812 are not disposed in a straight line with respect to the rotational center of the cam.
  • a switch pressing profile 72 having two push protrusions 721 and 722 having a square angle is used, and a bidirectional rotary motor 60 is used as the driving unit 60.
  • the motor On the basis of the first mode M1 in the manual locked state, when the automatic opening function is performed, the motor is driven in the first rotation direction c1 to switch the cam to the second mode M2, and then the motor is restarted. Driving in the two rotational directions c2 returns to the first mode M1.
  • the motor is driven in the second rotation direction c2 to switch the cam to the third mode M3, and then the motor is restarted.
  • Driving in one rotational direction c1 returns to the first mode M1.
  • the position of the latch positioning profile in contact with the contact surface of the latch is present only within the contact range R of FIG.
  • the cam 70 is removed to determine the initial positions of the cam and the latch. Rotate in two rotational directions (c2).
  • the position of the cam in contact with the latch is determined between the third mode and the first mode (between about 120 and 240 degrees) and the first mode of FIG. And between the third mode (about 260 to 370 degrees (10 degrees)). Therefore, when the cam 70 is rotated in the second rotation direction c2, the cam 70 only reaches the third mode or reaches the first mode but does not reach the second mode. Therefore, when the cam 70 is rotated in the second rotation direction, the door is not opened during the initial position search.
  • the position range in which the cam does not press both switches is as shown in FIG. 16 when the second pusher 722 is between the angles b of the two switches as shown in FIG. 15.
  • the first push protrusion 721 is between the two angles of the two switches, and when the two push protrusions 721 and 722 are located outside the two angles of the two switches as shown in FIG. 17. .
  • the state of FIG. 15 is a case where the cam is between the third mode and the first mode of FIG. 14 (about 120 to 240 degrees), and the state of FIG. 16 is the cam of the first mode and the third mode.
  • the case may be between modes (about 260 degrees to 370 degrees (10 degrees)).
  • the cam was initially in the position shown in FIG. 15, when the cam is rotated in the second rotation direction c2 for the initial position search of the cam, the first mode M1 is reached.
  • the controller stops driving the motor 60 when both switches 81 and 82 are confirmed to be pressed.
  • the cam and latch are then placed in the manual locked state.
  • the third mode M3 is reached. Since the third mode is in the locked position, the door does not open automatically. If it is confirmed that only the second switch 82 is pressed and the first switch 81 is not pressed, the controller drives the motor 60 again to rotate the cam in the first rotation direction c1. The cam then reaches the first mode M1. The controller stops driving the motor 60 when both switches 81 and 82 are confirmed to be pressed. The cam and latch are then placed in the manual locked state.
  • the initial position of the cam in the manufacturing process of the latch module may be in a state as shown in FIG.
  • the controller of the present invention rotates the cam in the second rotation direction c2 when the cam is in the fourth mode during the initial driving of the cooker. If the cam is rotated in the second rotation direction c2 and the second mode M2 is reached, that is, only the first switch 81 is pressed and the second switch 82 is not pressed, the case 3 of FIG. As shown, the cam is further rotated in the second rotation direction c2. As a result, the cam enters the first mode M1. The controller stops driving the motor 60 when both switches 81 and 82 are confirmed to be pressed. The cam and latch are then placed in the manual locked state.
  • the door may be opened.
  • the latch module starts to supply power to the latch module before the latch module is installed in the cooking apparatus, the cam and the latch are in the first mode M1 through the initial search procedure.
  • the above-described initial search procedure and the cam and the latch are performed in the first mode (M1). ) Therefore, at the stage where the consumer first purchases and uses the cooking appliance, there is no fear that the cam will be in a state as shown in FIG.
  • control unit 80 may control the position of the latch 50 by controlling the rotational displacement of the cam 70 through the switches 81 and 82 and the motor 60. That is, the controller 80 may control the latch 50 to be positioned at any one of the first basic position, the second basic position (automatic opening position), and the third basic position (hanging locking position). In addition, as described above, the control unit 80 may also control as shown in FIG. 18.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Electric Ovens (AREA)

Abstract

La présente invention concerne un module loquet intégrant une fonction d'ouverture automatique et une fonction de verrouillage, un procédé de commande dudit module et un appareil de cuisson auquel s'appliquent lesdits module et procédé. Parmi les positions vers lesquelles un loquet (50) du module loquet peut être déplacé peuvent figurer une première position de base, une deuxième position de base et une troisième position de base. La première position de base et la troisième position de base peuvent être des positions dans lesquelles le loquet (50) est en prise avec une structure de retenue (22), de telle sorte qu'une porte (20) est maintenue dans un état fermé. La deuxième position de base peut être une position dans laquelle le loquet (50) n'est pas en prise avec la structure de retenue (22). Le loquet peut être déplacé vers l'une quelconque de ces trois positions par un dispositif de commande. Dans une position dans laquelle la porte (20) est fermée, un module charnière peut appliquer une force à la porte (20) dans une direction d'ouverture. En conséquence, lorsque le loquet (50) se trouve dans la deuxième position de base, la porte (20) peut être ouverte par la force du module charnière.
PCT/KR2019/002921 2018-04-16 2019-03-13 Module loquet, procédé de commande d'un module loquet et appareil de cuisson auquel s'appliquent lesdits module et procédé Ceased WO2019203444A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201980026380.7A CN112041524B (zh) 2018-04-16 2019-03-13 闩锁模块及应用闩锁模块的烹饪设备
AU2019256071A AU2019256071B2 (en) 2018-04-16 2019-03-13 Latch module, method for controlling latch module, and cooking apparatus to which same is applied

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
KR10-2018-0044151 2018-04-16
KR1020180044152A KR101971273B1 (ko) 2018-04-16 2018-04-16 래치 모듈, 그 제어 방법 및 이를 적용한 조리기기
KR10-2018-0044153 2018-04-16
KR1020180044153A KR102001224B1 (ko) 2018-04-16 2018-04-16 래치 모듈, 그 제어 방법 및 이를 적용한 조리기기
KR10-2018-0044152 2018-04-16
KR1020180044151A KR102040222B1 (ko) 2018-04-16 2018-04-16 래치 모듈, 그 제어 방법 및 이를 적용한 조리기기

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PCT/KR2019/002921 Ceased WO2019203444A1 (fr) 2018-04-16 2019-03-13 Module loquet, procédé de commande d'un module loquet et appareil de cuisson auquel s'appliquent lesdits module et procédé

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CN (1) CN112041524B (fr)
AU (1) AU2019256071B2 (fr)
WO (1) WO2019203444A1 (fr)

Cited By (3)

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US11261634B2 (en) 2018-04-16 2022-03-01 Lg Electronics Inc. Latch module and an appliance using the same
US12035845B1 (en) 2023-04-26 2024-07-16 Sharkninja Operating Llc Systems and methods for cooking pizza
US12372247B2 (en) 2023-04-26 2025-07-29 Sharkninja Operating Llc Systems and methods for cooking pizza

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EP4680081A1 (fr) * 2023-03-17 2026-01-21 SharkNinja Operating LLC Systèmes de verrouillage de dispositif de cuisson

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US20060232077A1 (en) * 2005-04-14 2006-10-19 Courter Harry I Lock release for motorized oven lock
KR20090103293A (ko) * 2008-03-28 2009-10-01 엘지전자 주식회사 도어 래치 어셈블리 및 이를 포함하는 조리기기
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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11261634B2 (en) 2018-04-16 2022-03-01 Lg Electronics Inc. Latch module and an appliance using the same
US11753856B2 (en) 2018-04-16 2023-09-12 Lg Electronics Inc. Latch module and an appliance using the same
US12188276B2 (en) 2018-04-16 2025-01-07 Lg Electronics Inc. Latch module and an appliance using the same
US12035845B1 (en) 2023-04-26 2024-07-16 Sharkninja Operating Llc Systems and methods for cooking pizza
US12372247B2 (en) 2023-04-26 2025-07-29 Sharkninja Operating Llc Systems and methods for cooking pizza
US12408792B2 (en) 2023-04-26 2025-09-09 Sharkninja Operating Llc Systems and methods for cooking pizza

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AU2019256071A1 (en) 2020-11-12
AU2019256071B2 (en) 2022-09-29
CN112041524B (zh) 2022-12-06

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