Latch device and cooking appliance

Abstract

Disclosed in the present application are a latch device and a cooking appliance. The latch device of the present application comprises: a locking assembly configured to be mounted on a housing, the locking assembly being provided with a snap-in end; and a snap-fit member configured to be slidably connected to a door body in a first direction, the snap-fit member comprising a first snap-fit portion and a second snap-fit portion, the first snap-fit portion and the second snap-fit portion being spaced apart in the first direction, the first snap-fit portion being provided with a first hook body, the side of the first hook body in the first direction being provided with a first clearance recess, the second snap-fit portion being provided with a second hook body, the side of the second hook body in the first direction being provided with a second clearance recess, and the orientation of the first clearance recess being the same as that of the second clearance recess. When the door body is closed, the elastic force of a first elastic member can provide a cushioning effect for the door body to reduce the impact sound of the door body, and can also reduce the snapping speed of the snap-fit member to reduce the snapping sound, thereby reducing door closing noises and improving user experience.

Description

Door lock devices and cooking appliances

[0001] Cross-references to related applications

[0002] This application claims priority and the rights of the following patent applications, the entire contents of which are incorporated herein by reference:

[0003] Chinese patent application filed on June 28, 2024 with China National Intellectual Property Administration, application number 202410865236.5, entitled "Door Lock Device and Cooking Appliance";

[0004] A Chinese patent application filed on October 29, 2024, with application number 202411536215.5 and title "Door Lock Device and Cooking Appliance";

[0005] A Chinese patent application, filed on August 30, 2024, with application number 202422137485.0 and titled "Door Lock Device and Cooking Appliance", was submitted to the China National Intellectual Property Administration. Technical Field

[0006] This application relates to a lock, specifically a door lock device and a cooking appliance. Background Technology

[0007] In related technologies, cooking appliances have a cavity and a door, with the door rotatably mounted on the cavity. The door can be opened or closed under external force. To improve the safety of the cooking appliance during operation, for example, to prevent it from starting to work before the door is fully closed, the door is generally equipped with a latch, which is movably connected to the door via a spring. The cavity of the cooking appliance is equipped with a door lock mechanism, which has a bracket with an inclined retaining part. The latch cooperates with the retaining part to ensure that the door can be fully closed.

[0008] A rotatable drive lever is also formed on the support frame, which rotates through a torsion spring. During the door closing process, as the hook climbs from the lower slope of the holding section to the higher slope, it first hits the drive lever. Under the action of inertia, it pushes the drive lever past the inflection point of the horizontal component of the torsion spring, causing the hook to engage with the drive lever. The drive lever rotates under the torque of the torsion spring, pulling the hook forward and moving it up the ramp of the support frame. Gradually, the hook slides past the highest point of the ramp, and under the restoring force of the door's spring, it quickly touches the microswitch contact, activating the microswitch. The drive lever, under the torque of the torsion spring, pulls the door hook forward slowly, simultaneously moving the door forward to close the door.

[0009] When a cooking appliance is open, external forces or other forces from the user may cause the door lock mechanism to be abnormally or accidentally triggered, resulting in the drive lever rotating to an abnormal position. In this situation, when closing the door, the latch will be obstructed by the drive lever and unable to move to the stop position, preventing the appliance from closing properly. Furthermore, when closing with excessive force, the door lock may quickly engage, causing the door to collide with the casing and generate significant noise, negatively impacting the user experience. In such cases, the appliance can only be repaired by a technician, leading to high maintenance costs and a poor user experience. Summary of the Invention

[0010] In view of the above problems, this application provides a door lock device and a cooking appliance that can solve one of the above problems.

[0011] In a first aspect, this application provides a door lock device for locking the door of a cooking appliance to its housing. The door lock device includes:

[0012] A locking assembly for mounting to the housing, the locking assembly having a snap-in end;

[0013] A latching component is used to slide and connect with a door body along a first direction. The latching component includes a first latching part and a second latching part, which are spaced apart along the first direction. The first latching part has a first hook body, and a first clearance groove is provided on one side of the first hook body along the first direction. The second latching part has a second hook body, and a second clearance groove is provided on one side of the first direction. The orientation of the first clearance groove and the orientation of the second clearance groove are the same. When the latching component is driven, it is configured to drive the first hook body and the second hook body to lock at different positions of the locking component. When both the first hook body and the second hook body are in the locked state, the first part of the locking component is engaged in the first clearance groove, and the second part of the locking component is engaged in the second clearance groove. The first part and the second part are spaced apart along the first direction, and the first direction is perpendicular to the latching direction of the latching component.

[0014] The first elastic member has one end connected to the retaining member and the other end used to connect to the door body. The first elastic member has a first state and a second state. In the first state, the elastic force of the first elastic member tends to reduce the tendency of the first retaining part and the second retaining part to engage with the locking component respectively. In the second state, the elastic force of the first elastic member tends to keep the first retaining part and the second retaining part engaged with the locking component along the first direction respectively.

[0015] When the door closes, the elastic force of the first elastic element can provide a buffer for the door to reduce the impact sound of the door. At the same time, it can also slow down the locking speed of the latching element to reduce the locking sound, thereby reducing the noise of closing the door and improving the user experience.

[0016] In one embodiment of this application, the locking component includes a bracket with a snap-in end and a snap-in channel. One end of the snap-in channel passes through the snap-in end, and the other end of the snap-in channel has a snap-in interface. The snap-in channel has an abutment surface. Along the direction from the second holding part to the first holding part, the minimum dimension from any position on the abutment surface to the snap-in end increases progressively. The first hook has a first locked state where it moves from the snap-in end into the abutment surface and slides from the abutment surface to the snap-in interface, and a first unlocked state where it separates from the snap-in interface. The portion of the wall of the snap-in channel with the abutment surface is a first part. When the first hook slides on the abutment surface, the first elastic member is in a first state to generate a pressing force between the first hook and the abutment surface. When the first holding part is in the first locked state, the first elastic member is in a second state to maintain the snap-in between the first hook and the snap-in interface.

[0017] In one embodiment of this application, the first hook body includes a first hook head and a first hook arm, the first hook head and the first hook arm are connected, the first hook head and the first hook arm together define a first clearance groove, the first edge of the card interface is located in the first clearance groove, when the first hook body is in a first locked state, along the direction from the first holding part to the second holding part, the gap between the surface of the first hook head toward the first edge and the first edge shows an increasing trend, the gap being the size along the snap-in direction.

[0018] In one embodiment of this application, the locking component further includes a first locking mechanism disposed on the bracket. The first locking mechanism has a first slot, and the second hook has a second locking state in which it enters from the insertion end and engages with the first slot, and a second unlocking state in which it separates from the first slot and exits from the insertion end.

[0019] In one embodiment of this application, the first locking mechanism includes:

[0020] The first movable component is rotatably connected to the bracket. The axis of rotation of the first movable component relative to the bracket is perpendicular to the first direction. The first movable component has a first slot, and part of the wall of the first slot is the second part.

[0021] The second elastic element has a first end that is rotatably connected to the bracket and has a first rotation center. The second end of the second elastic element is rotatably connected to the first movable element and has a second rotation center. The center of rotation of the first movable element relative to the bracket is the third rotation center. On the first cross-section of the first movable element, the straight line passing through the third rotation center and the second rotation center is the first straight line. During the process of the second hook body switching from the second unlocked state to the second locked state, the trajectory curve of the second rotation center intersects with the first straight line. The axis of rotation of the first movable element relative to the bracket is perpendicular to the first cross-section.

[0022] In one embodiment of this application, the first locking mechanism further includes a third elastic member disposed on the bracket. When the second hook is in the second unlocked state, the third elastic member abuts against the first movable member, and the third elastic member is in a compressed state.

[0023] In one embodiment of this application, the locking assembly further includes a damping component disposed on the bracket. The damping component is used to provide a damping force to the first movable member to slow down the speed at which the second hook body engages with the first slot.

[0024] In one embodiment of this application, the first movable member has a partially convex arc surface. The axis of rotation of the first movable member relative to the bracket coincides with the axis of the arc surface. The arc surface is provided with a plurality of meshing teeth continuously arranged circumferentially along the arc surface. The damping component includes a damper and a rack. The rack is slidably connected to the bracket in a first direction. The rack meshes with the meshing teeth. Along the length direction of the rack, the rack is configured to be driven and move linearly relative to the bracket. The movable end of the damper cooperates with one end of the rack in the length direction.

[0025] In one embodiment of this application, the locking component further includes a first micro switch, which is disposed on the bracket. When the first hook is in the locked state, the first hook triggers the first micro switch.

[0026] In one embodiment of this application, the locking component further includes a second micro switch, which is disposed on the bracket. When the second hook is in the locked state, the second hook triggers the second micro switch.

[0027] Secondly, this application provides a door lock device, which includes: a bracket, a retaining member, a first movable member, and a blocking and limiting member. The bracket is used to be installed at the opening of the housing; the retaining member is used to be fixed to the door body, which is installed at the opening of the housing and is rotatably connected to the housing to open or close the opening of the housing; the first movable member is installed on the bracket and can rotate relative to the bracket, and is used to cooperate with the retaining member to drive the door body to close during the closing process; the blocking and limiting member is rotatably installed on the bracket, and can restrict the rotation of the first movable member when the door body is in the open state.

[0028] In one embodiment of this application, the first movable member includes a rotating hook arm, and the blocking and limiting member includes a limiting groove, which engages with the rotating hook arm to restrict the rotation of the first movable member when the door is in the open state.

[0029] In one embodiment of this application, the door lock device further includes a fourth elastic element, and the blocking and limiting member further includes an elastic element mounting seat. The elastic element mounting seat is located on the opposite side of the blocking and limiting member and the limiting slot. The first end of the fourth elastic element is fixedly mounted on the elastic element mounting seat, and the second end of the fourth elastic element is fixedly mounted on the bracket.

[0030] In one embodiment of this application, the blocking and limiting member is provided with a rotating hole, and the bracket is provided with a rotating shaft corresponding to the rotating hole. The blocking and limiting member is rotatably mounted on the rotating shaft through the rotating hole; or the blocking and limiting member is provided with a rotating shaft, and the bracket is provided with a rotating hole corresponding to the rotating shaft. The blocking and limiting member is rotatably mounted on the rotating hole through the rotating shaft.

[0031] In one embodiment of this application, the latching member includes a mounting part and a second latching part disposed on the mounting part, the second latching part having a second hook; a first movable member has a first slot, and the first movable member can drive the door to close via the second latching part when the second hook engages with the first slot; the blocking and limiting member also has a first inclined surface, when the door is closed, the second latching part is pushed by a thrust to push the first inclined surface, causing the blocking and limiting member to rotate around the pivot; when the door is closed, the second latching part is pushed by a thrust to push the first inclined surface, causing the first movable member to rotate in the direction of the thrust to release the rotating hook arm, during the closing process, the bottom of the second latching part always presses against the top of the blocking and limiting member; when the door is opened, the bottom of the second latching part always presses against the top of the blocking and limiting member until the second hook of the second latching part disengages from the first slot, causing the limiting slot to limit the rotating hook arm, after which the second latching part separates from the blocking and limiting member.

[0032] In one embodiment of this application, the blocking and limiting member further includes a second inclined surface located on the limiting slot opposite to the first inclined surface. When the blocking and limiting member rotates, the second inclined surface and the second holding part are spaced apart by a preset distance.

[0033] In some embodiments, the latching member further includes a first latching portion disposed on the mounting portion, the first latching portion and the second latching portion being spaced apart; the door lock device further includes a first locking member and a second micro switch disposed on the bracket, the second micro switch being used to control the first locking member to lock the first latching portion; when the first latching portion contacts the second micro switch, the second micro switch is triggered, so that the first latching portion is locked by the first locking member.

[0034] In one embodiment of this application, the door lock device further includes a second elastic member, which connects the bracket and the first movable member. After the door is opened, the second elastic member can keep the rotating hook arm in force balance so that the rotating hook arm is in a balanced position. When the first movable member cooperates with the locking member, the second elastic member can apply an elastic force to the first movable member so that the first movable member rotates so as to drive the door to close through the locking member.

[0035] In one embodiment of this application, the door lock device further includes a tension spring mechanism, which is disposed on the side of the bracket opposite to the blocking and limiting member; the tension spring mechanism includes a first tension spring and a second tension spring, which have a tension difference with a rotation angle, enabling the rotating hook arm to maintain force balance when the door is opened, so that the rotating hook arm is in a balanced position; the first tension spring and the second tension spring provide the tension when the door is closed.

[0036] In one embodiment of this application, the door lock device further includes a first micro switch, a rotary lever, and a second locking member disposed on the bracket. The first micro switch is used to control the second locking member to lock the second latching part. When the door is closed, the second latching part is pushed by a thrust to move the rotating hook arm away from the balance position. The second elastic member provides a pulling force to pull the second latching part until it pushes the rotary lever to rotate to trigger the first micro switch, so that the second latching part is locked by the second locking member to close the door.

[0037] In one embodiment of this application, the door lock device further includes a damping component mounted on a bracket. The damping component is used to provide damping force to slow down the rotational speed of the first moving member, thereby slowing down the closing speed of the door.

[0038] Thirdly, this application provides a cooking appliance, comprising:

[0039] The shell has an interior cavity, and the front end of the shell has a doorway that communicates with the cavity.

[0040] The door body is configured to fit with the doorway cover, with one end of the door body pivotally connected to the housing.

[0041] In any embodiment of the first aspect, the door lock device has a latching member that is slidably connected to the door body along a first direction, the other end of the first elastic member being connected to the door body, the first latching part and the second latching part extending from the side of the door body toward the doorway, the locking assembly being installed inside the housing, and when the door body is closed to the doorway, the first hook and the second hook are locked at different positions with the locking assembly, and when the door body is in the open state, the first hook and the second hook are separated from the locking assembly.

[0042] Fourthly, this application also provides a cooking appliance. The cooking appliance includes a door, a housing, and a door lock device according to any embodiment of the second aspect. A bracket is installed at the opening of the housing, and a retaining member is disposed on the door.

[0043] In the door lock device and cooking appliance of the present application embodiments, a blocking and limiting member rotatably mounted on the bracket is added to the door lock device, which can restrict the rotation of the first moving member when the door is open, prevent the first moving member from being abnormally triggered, and ensure that the door of the door lock device can be opened and closed normally.

[0044] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0045] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiments below. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0046] Figure 1 is an exploded view of a door lock device according to certain embodiments of this application;

[0047] Figure 2 is an isometric view of a bracket in a door lock device according to certain embodiments of this application;

[0048] Figure 3 is an exploded view of the positional relationship between the locking member, the first elastic member, and the door body in a door lock device according to certain embodiments of this application;

[0049] Figure 4A is a side view of a door lock device in an unlocked state according to some embodiments;

[0050] Figure 4B is a side view of the process by which a retaining element engages with a locking component in a door lock device according to certain embodiments of this application;

[0051] Figure 4C is a side view of a door lock device in a locked state according to certain embodiments of this application;

[0052] Figure 4D is a side view of a door lock device in an unlocked state according to certain embodiments of this application;

[0053] Figure 5A1 is a perspective view of a door lock device according to some embodiments of this application;

[0054] Figure 5A2 is a perspective view of a door lock device according to some embodiments of this application;

[0055] Figure 5A3 is a perspective view of a door lock device according to certain embodiments of this application;

[0056] Figure 5A4 is an exploded perspective view of a door lock device according to certain embodiments of this application;

[0057] Figure 5A5 is a schematic diagram of the state of a door lock device according to certain embodiments of this application;

[0058] Figure 5A6 is another schematic diagram of the door lock device according to certain embodiments of this application;

[0059] Figure 5A7 is another schematic diagram of the door lock device according to certain embodiments of this application;

[0060] Figure 5A8 is another schematic diagram of the door lock device according to certain embodiments of this application;

[0061] Figure 5A9 is a perspective view of a blocking and limiting member in a door lock device according to certain embodiments of this application;

[0062] Figure 5A10 is a perspective view of a bracket in a door lock device according to some embodiments of this application;

[0063] Figure 5A11 is a perspective view of the bracket in a door lock device according to some embodiments of this application;

[0064] Figure 5A12 is a perspective view of the bracket in a door lock device according to some embodiments of this application;

[0065] Figure 5A13 is a schematic diagram of the state of a door lock device according to certain embodiments of this application;

[0066] Figure 5A14 is another schematic diagram of the door lock device according to certain embodiments of this application;

[0067] Figure 5A15 is another schematic diagram of the door lock device according to certain embodiments of this application;

[0068] Figure 5A16 is a perspective view of a door lock device according to certain embodiments of this application;

[0069] Figure 5A17 is a perspective view of a door lock device according to certain embodiments of this application;

[0070] Figure 5A18 is a perspective view of a door lock device according to some embodiments of this application;

[0071] Figure 5A19 is a schematic diagram of the state of a door lock device according to certain embodiments of this application;

[0072] Figure 5A20 is another schematic diagram of the door lock device according to certain embodiments of this application;

[0073] Figure 5A21 is another schematic diagram of the door lock device according to certain embodiments of this application;

[0074] Figure 5A22 is an exploded perspective view of a portion of the door lock device structure according to certain embodiments of this application.

[0075] Figure 6A is a first-view axonometric view of a cooking appliance according to certain embodiments of this application;

[0076] Figure 6B is a partial axonometric view from a second perspective of a cooking appliance according to certain embodiments of this application;

[0077] Figure 6C is a partial structural schematic diagram of a cooking appliance according to certain embodiments of this application.

[0078] The reference numerals in the detailed embodiments are as follows: 1000, cooking appliance; 100, door lock device; 200, housing; 300, door body; 310, second hook part; 320, door hook spring; 330, positioning hole; 10, holding member; 11, first holding part; 110, first hook; 111, first hook head; 112, first hook arm; 113, first clearance groove; 12, second holding part; 120, second hook; 121, second hook head; 122, second hook arm; 123, second clearance groove; 13, mounting part; 131, first hook part; 20, locking component; 21, bracket; 211, snap-in end; 212, snap-in channel; 213, abutment surface; 214. 215. Pivot shaft; 216. Through hole; 217. Damping component mounting hole; 218. Rotating shaft; 219. Electromagnet mounting base; 2110. Slide groove; 2111. Mounting shaft; 2111. Ramp; 2112. Lever mounting base; 2213. Mounting hole; 2214. Rotating hook arm; 22. First locking mechanism; 221. First moving part; 2211. First slot; 22111. Clearance part; 22112. First guide surface; 2212. Engaging tooth; 222. Second elastic element; 2221. First end; 2222. Second end; 24. Third elastic element; 25. Mounting cover; 26. First micro switch; 27. Second micro switch; 30. Damping component; 31. Rack; 32. Damper; 33. One-way damper; 40. First elastic element; 50. Blocking and limiting component; 51. Limiting slot; 52. Elastic component mounting base; 53. Rotary hole; 54. First inclined surface; 55. Second inclined surface; 60. Fourth elastic component; 70. First locking component; 81. Rotating lever; 82. Second locking component; 821. Electromagnet; 822. Lever; 94. Tension spring mechanism; 941. First tension spring; 942. Second tension spring; X, Engaging direction; Y, First direction; Z, First straight line. Detailed Implementation

[0079] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0080] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0081] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0082] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0083] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0084] In the description of the embodiments of this application, the term "multiple" refers to two or more (including two), similarly, "multiple sets" refers to two or more (including two sets), and "multiple pieces" refers to two or more (including two pieces).

[0085] In the description of the embodiments of this application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0086] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0087] According to an embodiment of this application, a door lock device 100 is provided. Referring to Figures 1-5B, the door lock device 100 is used to lock the door 300 of a cooking appliance 1000 to the housing 200. The door lock device 100 includes a locking component 20, a retaining member 10, and a first elastic member 40. The locking component 20 is mounted on the housing 200 and has a locking end 211. The retaining member 10 is used to slide and connect with the door body 300 along the first direction Y. The retaining member 10 includes a first retaining part 11 and a second retaining part 12. The first retaining part 11 and the second retaining part 12 are spaced apart along the first direction Y. The first retaining part 11 has a first hook body. The first hook body has a first clearance groove 113 on one side along the first direction Y. The second retaining part 12 has a second hook body. The second hook body has a second clearance groove 123 on one side along the first direction Y. The orientation of the first clearance groove 113 and the orientation of the second clearance groove 123 are the same. When the retaining member 10 is driven, it drives the first hook body and the second hook body to lock at different positions with the locking component 20. When both the first hook body and the second hook body are in the locked state, the first part of the locking component 20 is engaged in the first clearance groove 113, and the second part of the locking component 20 is engaged in the second clearance groove 123. The first part and the second part are spaced apart along the first direction Y. The first direction Y is perpendicular to the engaging direction X of the retaining member 10. One end of the first elastic member 40 is connected to the retaining member 10. The first elastic member 40 has a first state and a second state. In the first state, the other end of the first elastic member 40 is used to connect to the door body 300. The elastic force of the first elastic member 40 has the tendency to reduce the first retaining part 11 and the second retaining part 12 from engaging with the locking component 20 respectively. In the second state, the elastic force of the first elastic member 40 has the tendency to keep the first retaining part 11 and the second retaining part 12 engaged with the locking component 20 along the first direction Y respectively.

[0088] As an example, the retaining member 10 may further include a mounting portion 13, with the first retaining portion 11 and the second retaining portion 12 respectively connected to the mounting portion 13. The connection method may specifically include screw connection, riveting, welding, or integral molding. The first retaining portion 11 may be a metal part or a plastic part. The second retaining portion 12 may be a metal part or a plastic part.

[0089] The interior of the door body 300 may be provided with a guide groove extending along the first direction Y, and the retaining member 10 is disposed in the guide groove so that the retaining member 10 moves along the first direction Y in the guide groove.

[0090] The first elastic element 40 includes a compression spring, a tension spring, or an elastic telescopic rod, etc.

[0091] As an example, referring to Figures 1 and 3, the first elastic element 40 is a tension spring, one end of which is hooked to the mounting part 13, and the other end of which is hooked to the door body 300. The interior of the door body 300 may be provided with a receiving cavity to facilitate the concealment of the tension spring and part of the retaining member 10, and the first hook and the second hook head 121 extend from one side of the door body 300 to facilitate locking with the locking assembly 20.

[0092] The door body 300 and the housing 200 can be engaged by a door lock device 100. Specifically, one end of the door body 300 is rotatably connected to the housing 200, and the other end of the door body 300 is locked to the housing 200 by the door lock device 100. Multiple door lock devices 100 can also be provided, and the door body 300 can be detachably locked to the housing 200 by the door lock device 100.

[0093] Understandably, when the door 300 is rotatably mounted on the housing 200, the engaging direction X of the latching member 10 is the circumferential direction, and the direction perpendicular to both the radial and tangential directions of the rotation of the latching member 10 is the first direction Y. When the door 300 is detachably connected to the housing 200 via the door lock device 100, the engaging direction X is the linear direction, and the first direction Y is perpendicular to the linear direction.

[0094] When the door 300 is closed, the elastic force of the first elastic member 40 can provide a buffer for the door 300 to reduce the impact sound of the door 300. At the same time, it can also slow down the locking speed of the latching member 10 to reduce the locking sound, thereby reducing the noise of closing the door and improving the user experience.

[0095] In one embodiment of this application, referring to Figures 1, 2, and 4A-4C, the locking component 20 includes a bracket 21. The bracket 21 has a snap-in end 211 and a snap-in channel 212. One end of the snap-in channel 212 passes through the snap-in end 211, and the other end of the snap-in channel 212 has a snap-in interface. The snap-in channel 212 has an abutment surface 213. Along the direction from the second holding part 12 to the first holding part 11, the minimum dimension from any position on the abutment surface 213 to the snap-in end 211 increases progressively. The first hook body has... There is a first locked state where the first hook moves from the insertion end 211 to the contact surface 213 and slides from the contact surface 213 to the card interface, and a first unlocked state where it is separated from the card interface. The insertion channel 212 has a portion of the wall of the contact surface 213 as a first part. When the first hook slides on the contact surface 213, the first elastic member 40 is in a first state so that the first hook and the contact surface 213 generate a pressing force. When the first holding part 11 is in the first locked state, the first elastic member 40 is in a second state to maintain the engagement between the first hook and the card interface.

[0096] Any position on the contact surface 213 refers to the position along the direction from the second holding part 12 to the first holding part 11.

[0097] The contact surface 213 can be a plane, or a convex or concave curved surface.

[0098] Figure 4A schematically illustrates a structure where the contact surface 213 is planar.

[0099] Thus, the contact surface 213 can be formed into an inclined surface. During the engagement process of the first holding part 11, as the first hook body moves relative to the locking component 20, under the action of the first elastic member 40, the first hook body is locked to the card interface. During the closing process, the first elastic member 40 is stretched or compressed, and the first hook head 111 generates sliding friction with the carding channel 212 to buffer the impact force on the housing 200 during the closing process and reduce the locking speed of the first holding part 11 to reduce the noise of closing.

[0100] In one embodiment of this application, referring to FIG4A, the first hook body includes a first hook head 111 and a first hook arm 112. The first hook head 111 and the first hook arm 112 are connected and together define a first clearance groove 113. The first edge of the card interface is located in the first clearance groove 113. When the first hook body is in a first locked state, along the direction from the first holding part 11 to the second holding part 12, the gap between the surface of the first hook head 111 toward the first edge and the first edge shows an increasing trend. This gap is the size along the insertion direction X.

[0101] The first hook head 111 and the first hook arm 112 can be fixed by welding, integral molding or bonding.

[0102] The cross-section of the first hook arm 112 can adopt a gradually changing structure. Along the direction from the locking assembly 20 to the clamping member 10, the area of ​​the cross-section of the first hook arm 112 increases. This structure can reduce stress concentration during the locking process of the first clamping member 10, thereby reducing the risk of breakage of the first clamping member 10 and improving the service life of the first clamping member 10.

[0103] When the door 300 is pulled outward, the first hook 111 is subjected to the frictional force component of the first edge in the same direction as the first direction Y, which can drive the card holder 10 to move along the first direction Y, thereby causing the first hook 111 to disengage from the card interface and unlock the locking process. That is, the unlocking operation of the first card holder 10 is completed by manually pulling the door. During the locking process, the locking operation is achieved by pushing the door 300 to move. The operation is simple and convenient.

[0104] In one embodiment of this application, referring to Figures 4A-4C, the locking component 20 further includes a first locking mechanism 22, which is disposed on the bracket 21. The first locking mechanism 22 has a first slot 2211, and the second hook has a second locking state in which it enters from the insertion end 211 and engages with the first slot 2211, and a second unlocking state in which it separates from the first slot 2211 and exits from the insertion end 211.

[0105] As an example, the first slot 2211 can generally be a U-shaped slot.

[0106] As an example, the second hook body includes a second hook head 121 and a second hook arm 122, the second hook head 121 and the second hook arm 122 are connected, and the second hook head 121 and the second hook arm 122 together define a second clearance groove 123.

[0107] After the second hook body is engaged, part of the second hook head 121 is located in the second slot.

[0108] In one embodiment of this application, referring to Figures 4A-4D, the first locking mechanism 22 includes a first movable member 221 and a second elastic member 222. The first movable member 221 is rotatably connected to the bracket 21, and the axis of rotation of the first movable member 221 relative to the bracket 21 is perpendicular to the first direction Y. The first movable member 221 has a first slot 2211, and a portion of the wall of the first slot 2211 forms a second part. The first end 2221 of the second elastic member 222 is rotatably connected to the bracket 21 and has a first rotation center. The second end 2222 of the second elastic member 222 is rotatably connected to the first movable member 221 and has a second rotation center. The center of rotation of the first movable member 221 relative to the bracket 21 is a third rotation center. On the first cross-section of the first movable member 221, a straight line passing through the third rotation center and the second rotation center is a first straight line Z. During the process of the second hook switching from a second unlocked state to a second locked state, the trajectory curve of the second rotation center intersects with the first straight line Z. The axis of rotation of the first movable member 221 relative to the bracket 21 is perpendicular to the first cross-section.

[0109] As an example, the first movable member 221 is also provided with a first guide surface 22112, which is connected to the groove wall of the first slot 2211. During the process of the second hook body being inserted into the first slot 2211, the second hook body first abuts against the first guide surface 22112. The second hook body is driven by external force to make the first movable member 221 rotate. At this time, the position of the first slot 2211 relative to the second hook body changes, and it slides into the first slot 2211 under the guidance of the first guide surface 22112, and finally moves into the first slot 2211. At the same time, it maintains the locked state under the force of the second elastic member 222.

[0110] As an example, the first slot 2211 has a clearance portion 22111. During the engagement of the second hook, as the first movable member 221 rotates, the orientation of the opening of the first slot 2211 changes, and the clearance portion 22111 can avoid the first slot 2211, thereby reducing the probability of interference during engagement. A portion of the clearance portion 22111 can connect with the aforementioned first guide surface 22112. In other examples, the width of the first slot 2211 is slightly larger than the width (dimension along the engagement direction X) of the second holding portion 12, to further reduce the probability of jamming due to interference during engagement.

[0111] The second elastic element 222 can be a torsion spring or an elastic telescopic rod. The elastic telescopic rod can be an air spring; the elastic telescopic rod can also include a first rod, a second rod, and a first compression spring. The first rod is a hollow rod, and part of the second rod is located in the cavity of the first rod and extends out from one end of the first rod. The other end of the first rod is blocked, and a first compression spring is provided between the other end of the first rod and the second rod.

[0112] As an example, please refer to Figures 2 and 4A. The bracket 21 has a pivot shaft 214, and the first movable member 221 is provided with a shaft hole, which is rotatably engaged with the pivot shaft 214.

[0113] As an example, the snap-in end 211 may be provided with a through hole 215, through which the first hook 111 can pass and engage with the first locking mechanism 22.

[0114] Figures 4A-4C illustrate, for example, a structure in which the second elastic element 222 is a torsion spring and is connected to the bracket 21 and the first movable element 221, respectively.

[0115] As an example, referring to Figure 4D, the second elastic element 222 can be an elastic telescopic rod, with one end hinged to the bracket 21 and the other end hinged to the first movable element 221. In the first cross-section, the center of the hinge axis between the elastic telescopic rod and the bracket 21 is the first rotation center. The hinge center between the second elastic telescopic rod and the first movable element 221 is the second rotation center. During the second hook engagement, the first movable element 221 rotates, and simultaneously the elastic telescopic rod rotates relative to the bracket 21. When the second hook is not engaged, the first movable element 221 remains in an unlocked state under the elastic force of the second elastic telescopic rod. During the second hook engagement, the second hook overcomes the elastic force of the second elastic telescopic rod and causes the first movable element 221 to rotate. When the second rotation center moves to the first straight line Z, the torque of the elastic force of the elastic telescopic rod on the first movable element 221 is zero. As the second hook further drives the first movable element 221 to rotate, the direction of the torque of the elastic telescopic rod on the first movable element 221 is opposite to that before engagement.

[0116] Therefore, during the second hook engagement or unlocking process, the second elastic element 222 can provide elastic force in different directions to the first movable element 221 to generate torque in different directions, thereby slowing down the engagement speed during the second hook engagement process and maintaining the locked state after the second hook is locked.

[0117] In one embodiment of this application, please refer to Figures 4A-4C. The first locking mechanism 22 further includes a third elastic member 24. The third elastic member 24 is disposed on the bracket 21. When the second hook is in the second unlocked state, the third elastic member 24 abuts against the first movable member 221 and the third elastic member 24 is in a compressed state.

[0118] The third elastic element 24 includes, but is not limited to, one of a compression spring, an elastic rubber element, an elastic telescopic rod, or an elastic polyurethane element. The elastic telescopic rod can be, but is not limited to, the examples mentioned above.

[0119] As an example, during the second hook engagement process, the first movable part 221 can separate from the third elastic part 24 when it rotates at a certain angle, or it can remain in contact with the third elastic part 24.

[0120] Before the second hook enters the locking end 211, the second movable member is balanced under the force of the third elastic member 24 and the second elastic member 222. On the one hand, when the first locking part 11 is unlocked, the third elastic member 24 can provide a buffer to reduce the impact of the first movable member 221 on the bracket 21, thereby reducing the damage to the bracket 21 and extending the service life of the bracket 21. On the other hand, during the locking process of the second hook, the elastic force of the third elastic member 24 can offset part of the elastic force of the second elastic member 222, so as to reduce the thrust acting on the locking member 10 and make locking easier.

[0121] In one embodiment of this application, referring to FIG1, the locking assembly 20 further includes a damping component 30, which is disposed on the bracket 21. The damping component 30 is used to provide damping force to the first movable member 221 to slow down the speed at which the second hook body is inserted into the first slot 2211.

[0122] The damping component 30 includes either a flexible telescopic rod or a damper 32. The flexible telescopic rod can be one of the structures listed above.

[0123] The damping component 30 can further slow down the engagement speed of the second hook, so as to reduce the impact sound between the door 300 and the housing 200 when the door 300 of the cooking appliance 1000 is closed, and at the same time reduce the engagement sound of the second hook.

[0124] In one embodiment of this application, referring to FIG1, the first movable member 221 has a partially convex arc surface. The axis of rotation of the first movable member 221 relative to the bracket 21 coincides with the axis of the arc surface. The arc surface is provided with a plurality of meshing teeth 2212 continuously arranged circumferentially along the arc surface. The damping member 30 includes a damper 32 and a rack 31. The rack 31 is slidably connected to the bracket 21 along the first direction Y. The rack 31 meshes with the meshing teeth 2212. Along the length direction of the rack 31, the rack 31 is configured to be driven and move linearly relative to the bracket 21. The movable end of the damper 32 cooperates with one end of the rack 31 in the length direction.

[0125] As an example, the bracket 21 is provided with a mounting cover 25, which is detachably connected to the bracket 21. Specifically, it can be connected by snap-fit ​​or screws or both, and together with the bracket 21, it defines a guide groove. The length direction of the guide groove can be the same as the first direction Y. The rack 31 and the damper 32 are both provided in the guide groove. The damper 32 can abut against the end of the rack 31 or be connected to the rack 31.

[0126] The damper 32 can be a unidirectional damper 32. In other examples, the damping component 30 can be a flexible telescopic rod, which can be one of the structures listed above.

[0127] During the engagement of the second hook, the second hook drives the first movable member 221 to rotate. The rotation of the first movable member 221 drives the rack 31 to move along its own length, thereby compressing the damper 32. The damper 32 provides a reverse damping force to slow down the speed at which the second hook enters the first slot 2211, thereby reducing the noise generated by the collision between the door 300 and the housing 200 when the door is closed, and also reducing the noise of the engagement between the retaining member 10 and the locking assembly 20. In other examples, the rack 31 structure can be omitted, with one end of the damper 32 abutting against the first movable member 221 and the other end of the damper 32 hinged to the bracket 21.

[0128] In one embodiment of this application, referring to Figures 4A-4C, the locking component 20 further includes a first micro switch 26. The first micro switch 26 is disposed on the bracket 21. When the first hook is in the locked state, the first hook triggers the first micro switch 26.

[0129] The first micro switch 26 can be connected to the bracket 21 by screws, or it can be fixed to the bracket 21 by snap-fit ​​or adhesive. After the first hook body is snapped in, the first micro switch 26 can be located below the first hook head 111, and the first hook head 111 abuts against the first micro switch 26 to trigger the first micro switch 26 to generate a door closing signal.

[0130] Taking a cooking appliance 1000 as an example, such as a common microwave oven, during microwave oven use, when the door is closed, the first latch reaches a locked state. At this time, the first hook precisely triggers the first microswitch 26, thereby generating a door-closing signal. For example, when a user prepares to heat food and closes the microwave oven door, if the first hook is not in the correct locked state, the first microswitch 26 will not be triggered, and the microwave oven will not start. Only when the first hook successfully locks and triggers the first microswitch 26, generating a door-closing signal, will the microwave oven's heating function be activated. This effectively prevents the microwave oven from being started when the door is not properly closed, avoiding potential harm to the human body caused by microwave leakage.

[0131] In one embodiment of this application, referring to Figures 4A-4C, the locking component 20 further includes a second micro switch 27. The second micro switch 27 is disposed on the bracket 21. When the second hook is in the locked state, the second hook triggers the second micro switch 27.

[0132] The connection between the second micro switch 27 and the bracket 21 includes, but is not limited to, snap-fit, screw connection or adhesive connection.

[0133] The second microswitch 27 provides a door-closing signal when the second hook is successfully engaged, ensuring that the cooking appliance 1000 performs cooking operations after the door is closed. Taking a microwave oven as an example, this design prevents the microwave oven from being started if the door is not properly closed, avoiding potential harm to the human body from microwave leakage.

[0134] According to an embodiment of this application, a cooking appliance 1000 is provided. Referring to Figures 1-4D, 6A, and 6B, it includes a housing 200, a door 300, and a door lock device 100 as described in the above embodiment. The housing 200 has an interior cavity, and a doorway communicating with the cavity is provided at the front end of the housing 200. The door 300 is configured to close to the doorway, and one end of the door 300 is pivotally connected to the housing 200. A retaining member 10 is slidably connected to the door 300 along a first direction Y. The other end of a first elastic member 40 is connected to the door 300. A first retaining portion 11 and a second retaining portion 12 extend from the side of the door 300 facing the doorway. A locking assembly 20 is installed inside the housing 200. When the door 300 is closed to the doorway, the first hook and the second hook are locked at different positions with the locking assembly 20. When the door 300 is open, the first hook and the second hook are separated from the locking assembly 20.

[0135] Cooking appliances 1000 can include, but are not limited to, microwave ovens or electric ovens.

[0136] A cavity is a space used for cooking food.

[0137] Taking the cooking appliance 1000 as a microwave oven as an example, the first direction Y can be the height direction of the shell 200. During the closing process of the microwave oven, the first hook and the second hook are respectively engaged with the locking component 20, which can improve the reliability of closing the door.

[0138] As an example, in Figure 3, in order to conveniently illustrate the positional relationship between the first hook part 131 of the card holder 10, the second hook part 310 of the door body 300, and the first elastic member 40, the length direction of the first hook head and the length direction of the second hook body are set to be approximately perpendicular to the thickness direction of the door body 300. However, during installation, the length direction of the first hook body and the length direction of the second hook body are approximately the same as the thickness direction of the door body 300.

[0139] The first elastic element 40 can be a tension spring, the mounting part 13 of the clamping member 10 can be provided with a first hooking part 131, the door body 300 is provided with a second hooking part 310, one end of the tension spring is hooked to the first hooking part 131, the other end of the tension spring is hooked to the second hooking part 310, and the first hooking part 131 is located above the second hooking part 310.

[0140] Since the cooking appliance 1000 includes all the technical features of the door lock device 100 described above, and has the same effect as described above, it will not be repeated here.

[0141] Referring to Figures 6A and 6B, this application discloses a cooking appliance 1000, which includes, but is not limited to, a microwave oven, a steam oven, and an electric oven. The cooking appliance 1000 includes a housing 200, a door 300, and a door lock device 100. The housing 200 has an opening, and the door 300 is installed at the opening of the housing 200. The door 300 is rotatably connected to the housing 200 to open or close the opening of the housing 200. For example, the door 300 can be rotatably connected to the housing 200 via a hinge. The door lock device 100 connects the housing 200 and the door 300, and is used to open and close the door 300 relative to the housing 200.

[0142] Please refer to Figures 5A1-5A4 and Figure 6C. In some embodiments, the door lock device 100 includes a bracket 21, a holding member 10, a first movable member 221, and a blocking and limiting member 50.

[0143] The bracket 21 is used for installation at the opening of the housing 200. Specifically, the bracket 21 serves as a carrier for components such as the first movable part 221, and the bracket 21 can be installed on the housing 200 using fasteners such as screws. To meet the installation position, structure, and other requirements of different components, the bracket 21 is generally irregular in shape.

[0144] The retaining member 10 is used to fix the door body 300, which is installed at the opening of the housing 200. The door body 300 and the housing 200 are rotatably connected to open or close the opening of the housing 200. Specifically, the retaining member 10 can be installed on the door body 300 by welding, threaded connection, snap-fit, etc., thereby fixing the retaining member 10 to the door body 300. The retaining member 10 includes a mounting part 13 and a second retaining part 12 and a first retaining part 11 disposed on the mounting part 13.

[0145] The first movable part 221 is mounted on the bracket 21 and can rotate relative to the bracket 21. The first movable part 221 is used to cooperate with the holding part 10, and the door 300 is closed by the holding part 10 during the closing process.

[0146] Please refer to Figures 5A4 to 5A9. The first movable member 221 can rotate between a first position and a second position. During the rotation of the first movable member 221 from the first position to the second position, the door 300 is closed by the clamping member 10. The first position is the initial position where the first movable member 221 maintains balance, also known as the equilibrium position. The second position is the final position where the rotation of the first movable member 221 on the bracket 21 causes the clamping member 10 to move, thus closing the door 300.

[0147] The first movable component 221 has a mounting hole 2213, and the bracket 21 has a mounting shaft 2110 corresponding to the mounting hole 2213. The mounting hole 2213 engages with the mounting shaft 2110, allowing the first movable component 221 to be rotatably mounted on the bracket 21. The mounting hole 2213 can be circular or non-circular, without limitation, as long as it ensures that the first movable component 221 can rotate relative to the mounting shaft 2110 through the mounting hole 2213. The first movable component 221 can be a driving lever or other components capable of rotation, without limitation. A driving lever is a device that utilizes the lever principle to achieve rotation.

[0148] Understandably, in the related technology, the bracket 21 is formed with an inclined ramp 2111 and a first locking member 70 (as shown in Figure 5A14). During the closing process of the door 300, the first hook 110 of the first holding part 11 overcomes the tension of the spring and the friction between it and the ramp 2111, and climbs from the low slope section to the high slope section of the ramp 2111. After the first hook 110 crosses the high slope section of the ramp 2111, under the action of the spring restoring force, the first hook 110 of the first holding part 11 hooks the high slope section and engages with the first locking member 70, so that the door 300 is locked with the housing 200. However, in actual operation, at the moment when the first hook 110 of the first holding part 11 crosses the high slope section of the ramp 2111, the friction between the first hook 110 of the first holding part 11 and the ramp 2111, as well as the resistance of the spring to the first hook 110 of the first holding part 11, disappear. At this time, due to the user's operating inertia, the user will continue to apply a pushing force to the door 300, or the door 300 will continue to move due to inertia, applying a pushing force to the door 300, causing the door 300 to collide with the housing 200 and causing a large noise.

[0149] Therefore, the door lock device 100 of the present application embodiment may further include a damping component 30, which is mounted on the bracket 21. The damping component 30 is used to provide damping force to reduce the rotation speed of the first moving member 221, so as to reduce the closing speed of the door 300.

[0150] Specifically, the damping component 30 is mounted on the bracket 21. The damping component 30 provides damping force to reduce the rotational speed of the first movable member 221, thereby slowing down the closing speed of the door 300. The damping component 30 can engage with the first movable member 221 during its rotation, and the friction generated between the damping component 30 and the first movable member 221 limits the rotational speed of the first movable member 221.

[0151] The damping component 30 can be a one-way damper 33. When the door 300 is closing, the one-way damper 33 slows down the closing speed of the door 300. When the door 300 is opening, the one-way damper 33 provides no damping and does not obstruct the opening of the door 300. This reduces the impact between the door 300 and the housing 200 when the door 300 is closing, thus reducing noise. Conversely, when the door 300 is opening, the damping component 30 does not slow down the opening speed, requiring less effort and improving the user experience. Therefore, this application reduces the forward speed of the door 300 and thus the closing speed by setting a damping component 30 in the door lock device 100, eliminating closing impact noise and achieving a quiet operation.

[0152] Please refer to Figures 5A4, 5A10 to 5A12. A mounting cover 25 can be fixedly installed on the bracket 21. The bracket 21 may also have damping component assembly holes 216 corresponding to the mounting cover 25. The damping component 30 can be assembled onto the bracket 21 through the mounting cover 25 and the damping component assembly holes 216. For example, the damping component 30 may include a one-way damper 33 and a rack 31. When assembling the one-way damper 33 into the door lock device 100, the one-way damper 33 can be first installed on the rack 31, and then assembled onto the bracket 21 through the mounting cover 25 and screws into the damping component assembly holes 216.

[0153] The blocking and limiting member 50 is rotatably mounted on the bracket 21. The blocking and limiting member 50 can restrict the rotation of the first movable member 221 when the door 300 is in the open state. That is to say, when the door 300 is in the open state, the first movable member 221 can be held in the first position. At this time, the blocking and limiting member 50 can limit the rotation of the first movable member 221.

[0154] Specifically, the blocking and limiting component 50 can be a limiting lever or other components that can play a limiting role, and there are no restrictions here. Among them, the limiting lever is a device that uses the lever principle to achieve the limiting function.

[0155] During the closing process of the door 300, the retaining member 10 on the door 300 first contacts the blocking and limiting member 50. As the retaining member 10 moves towards the interior of the housing 200, it applies downward pressure to the blocking and limiting member 50, causing the blocking and limiting member 50 to rotate downwards and disengage from the first movable member 221, thus releasing the limiting effect of the blocking and limiting member 50. At this time, when the retaining member 10 continues to move towards the interior of the housing 200, the first movable member 221 is no longer blocked by the blocking and limiting member 50 and can rotate smoothly along a first direction, such as a counterclockwise direction, until the door 300 is closed. After the limiting effect of the blocking and limiting member 50 is released, the retaining member 10 continues to move towards the interior of the housing 200, while maintaining downward pressure on the blocking and limiting member 50 until the door 300 is closed.

[0156] During the opening of the door 300, the retaining member 10 is pulled by an external force, causing the first movable member 221 to rotate in a second direction opposite to the first direction. This second direction could be clockwise, for example. The rotation continues until the first movable member 221 reaches its initial first position and is again stopped by the blocking and limiting member 50 to prevent abnormal triggering. At this point, the retaining member 10 disengages from the first movable member 221. Subsequently, as the retaining member 10 continues to move towards the opening of the housing 200 under the action of an external force, the retaining member 10 disengages from the blocking and limiting member 50, and the blocking and limiting member 50 returns to its original position.

[0157] Thus, in the door lock device 100 of this application embodiment, a blocking and limiting member 50 rotatably mounted on the bracket 21 is added inside the door lock device 100. This can restrict the rotation of the first movable member 221 when the door body 300 is open, prevent the first movable member 221 from being abnormally triggered, and ensure that the door body 300 of the door lock device 100 can be opened and closed normally.

[0158] In addition, during the closing process of the door 300, the damping component 30 can slow down the rotation speed of the first moving part 221 to slow down the closing speed of the door 300, thereby reducing the noise generated by the collision between the door 300 and the housing 200 and improving the user experience.

[0159] Please refer to Figures 5A4 to 5A5. In some embodiments of this application, the first movable member 221 includes a rotating hook arm 2214. The blocking and limiting member 50 includes a limiting groove 51, which engages with the rotating hook arm 2214 to restrict the rotation of the first movable member 221 when the door 300 is in the open state.

[0160] Specifically, the shape of the limiting slot 51 can match the shape of the rotating hook arm 2214, and can lock the rotating hook arm 2214, as shown in Figures 5A1-5A5 and 6C. The shape of the limiting slot 51 can be "U". In other embodiments of this application, the limiting slot 51 can also be other shapes, which are not limited here. Thus, the blocking limiting member 50 of this application is provided with a limiting slot 51, which can engage with the rotating hook arm 2214 of the first movable member 221 through the limiting slot 51, thereby restricting the rotation of the first movable member 221 when the door 300 is in the open state, preventing the first movable member 221 from being abnormally triggered, causing the initial position of the first movable member 221 to change, that is, not to be in the first position mentioned above, so that the holding member 10 cannot normally push the first movable member 221 to rotate for normal door closing and opening, thereby ensuring that the door 300 of the door lock device 100 can be opened and closed normally.

[0161] The door lock device 100 also includes a fourth elastic element 60, and the blocking and limiting element 50 also includes an elastic element mounting base 52. The elastic element mounting base 52 is located on the opposite side of the blocking and limiting element 50 and the limiting slot 51. One end of the fourth elastic element 60 is fixedly mounted on the elastic element mounting base 52, and the other end of the fourth elastic element 60 is fixedly mounted on the bracket 21.

[0162] Specifically, the fourth elastic element 60 can be a compression spring or a spring. Correspondingly, the elastic element mounting base 52 can be a compression spring mounting base or a spring mounting base.

[0163] Understandably, compression springs generally have small deformation and elastic modulus, and their elastic restoring force is relatively stable. They generate elastic deformation under load to resist external pressure. Furthermore, compression springs have a relatively simple structure, typically consisting of coils with small diameters, without complex bending processes. Therefore, when the fourth elastic element 60 is a compression spring and the elastic element mounting base 52 is a compression spring mounting base, the elastic restoring force of the fourth elastic element 60 is more stable, and the structure is simpler. In this embodiment, the fourth elastic element 60 is a compression spring, and the elastic element mounting base 52 is a compression spring mounting base, as an example for explanation.

[0164] Please refer to Figures 5A3 and 5A4. The blocking and limiting member 50 is also provided with a rotating hole 53, and the bracket 21 is provided with a rotating shaft 217 corresponding to the rotating hole 53. The blocking and limiting member 50 is rotatably mounted on the rotating shaft 217 through the rotating hole 53.

[0165] That is to say, as shown in Figure 5A3, in this embodiment of the application, the rotating shaft 217 can be integrally mounted on the bracket 21, the rotating shaft 217 is fixed, and the blocking and limiting member 50 can be connected to the rotating shaft 217 through the rotating hole 53. The blocking and limiting member 50 rotates around the rotating shaft 217 with the rotating shaft 217 as the center.

[0166] In other embodiments of this application, the rotating shaft 217 may also be rotatably mounted on the bracket 21 around the center of its own axis, and the blocking and limiting member 50 may be fixedly installed with the rotating shaft 217 through the rotating hole 53, and the blocking and limiting member 50 may rotate together with the rotating shaft 217 through the rotating hole 53.

[0167] Furthermore, in other embodiments of this application, when the rotating hole 53 and the rotating shaft 217 are fixedly installed as a single unit, the rotating shaft 217 can also be configured as part of the blocking and limiting member 50, with the rotating shaft 217 serving as a rotating connection between the blocking and limiting member 50 and the bracket 21 for relative rotation. When installing the blocking and limiting member 50, it is only necessary to insert one end of the rotating shaft 217 into the corresponding mounting hole of the bracket 21.

[0168] The rotating hole 53 can be circular or square, without limitation. Correspondingly, the rotating shaft 217 can be cylindrical or square.

[0169] In other embodiments of this application, the blocking and limiting member 50 may be provided with a rotating shaft, and the bracket 21 may be provided with a rotating hole corresponding to the rotating shaft. The blocking and limiting member 50 may be rotatably mounted on the rotating hole via the rotating shaft. This is not a limitation.

[0170] Please refer to Figures 5A1-5A4 and 6C. The retaining member 10 includes a mounting part 13 and a second retaining part 12 disposed on the mounting part 13. The second retaining part 12 has a second hook 120. The first movable member 221 is provided with a first slot 2211. When the second hook 120 is engaged with the first slot 2211, the first movable member 221 can drive the door 300 to close via the second retaining part 12.

[0171] Please refer to Figures 5A5-5A9. The blocking and limiting member 50 is also provided with a first inclined surface 54. When the door 300 is closed, the second holding part 12 is pushed by the force to push the first inclined surface 54, causing the blocking and limiting member 50 to rotate around the pivot 217. When the door 300 is closed, the second holding part 12 is pushed by the force to push the first inclined surface 54, causing the first movable part 221 to rotate in the direction of the force to release the rotating hook arm 2214. During the closing process, the bottom of the second holding part 12 always presses against the top of the blocking and limiting member 50.

[0172] When the door 300 is opened, the bottom of the second holding part 12 always presses against the top of the blocking limit member 50 until the second hook 120 of the second holding part 12 disengages from the first slot 2211, causing the limiting slot 51 to limit the rotating hook arm 2214, and then the second holding part 12 separates from the blocking limit member 50.

[0173] Specifically, the inclination direction of the first inclined surface 54 can be as shown in FIG6C, that is, it is inclined toward the bottom of the second holding part 12 toward the blocking limit member 50.

[0174] Furthermore, the first inclined surface 54 can form a smooth curved slope section on the blocking and limiting member 50. That is, the first inclined surface 54 can serve as the front curved slope section of the blocking rod's jaw formed by the limiting groove 51 of the blocking and limiting member 50.

[0175] Thus, by setting the first inclined surface 54, the blocking and limiting member 50 of this application forms a front curved slope section. During the closing process of the door body 300, after the blocking and limiting member 50 comes into contact with the second holding part 12, the blocking and limiting member 50 can be more smoothly pressured downward by the second hook 120 of the second holding part 12, so that the blocking and limiting member 50 rotates downward around the rotating shaft 217.

[0176] Please refer to Figure 6C. The blocking and limiting member 50 also includes a second inclined surface 55 located on the limiting groove 51 opposite to the first inclined surface 54. When the blocking and limiting member 50 rotates, the second inclined surface 55 is spaced at a preset distance from the second holding part 12. The preset distance can be, for example, 1cm, 1.2cm, or 1.5cm, and is not limited here. That is to say, when the door 300 is closed or opened, during the rotation of the blocking and limiting member 50, the second inclined surface 55 does not interfere with the movement of the second holding part 12.

[0177] The second inclined surface 55 can be inclined in the direction shown in Figure 6C, that is, inclined away from the second holding part 12 towards the bottom of the blocking and limiting member 50. Furthermore, the second inclined surface 55 can form a smooth curved slope section on the blocking and limiting member 50.

[0178] That is, the second inclined surface 55 can serve as the rear curved slope section of the blocking rod jaw formed by the limiting groove 51 of the blocking limiting member 50. When the blocking limiting member 50 rotates, the second inclined surface 55 is spaced at a preset distance from the second holding part 12, so that during the subsequent rotation of the rotating hook arm 2214, the rear curved slope section of the blocking rod jaw formed by the limiting groove 51 of the blocking limiting member 50 moves away from the rotating hook arm 2214 of the first movable member 221, ensuring that the second inclined surface 55 of the blocking limiting member 50 will not interfere with the subsequent rotation of the rotating hook arm 2214.

[0179] As shown in Figures 5A1-5A4 and 6C, the blocking and limiting member 50 in this embodiment can be a hollow structure to reduce the overall weight of the door lock device 100. In other embodiments of this application, the blocking and limiting member 50 can also be a solid structure, and the manufacturing process of the blocking and limiting member 50 is simpler.

[0180] Please refer to Figures 5A13 to 5A15. The retaining member 10 also includes a first retaining part 11 disposed on the mounting part 13. The first retaining part 11 and the second retaining part 12 are spaced apart. The door lock device 100 also includes a first locking member 70 and a second micro switch 27 disposed on the bracket 21. The second micro switch 27 is used to control the first locking member 70 to lock the first retaining part 11; when the first retaining part 11 contacts the second micro switch 27, the second micro switch 27 is triggered, so that the first retaining part 11 is locked by the first locking member 70.

[0181] In this embodiment, the mounting part 21, the first holding part 22, and the second holding part 23 are separate structures, and both the first holding part 22 and the second holding part 23 can be fixed to the mounting part 21 by means of screws or the like.

[0182] Specifically, the first locking element 70 can be a locking device controlled by the second micro switch 27. The first locking element 70 is detachably connected to the bracket 21 for easy maintenance and replacement; or, the first locking element 70 and the bracket 21 are fixed together by welding for easy processing and production; or, the first locking element 70 and the bracket 21 are an integral structure, which has better mechanical properties and higher connection strength compared to post-processing, which helps to reduce the number of parts, thereby reducing installation steps and improving installation efficiency.

[0183] Please refer to Figures 5A1-5A9 and Figure 6C. In one embodiment, the door lock device 100 may further include a second elastic element 222, which is a torsion spring. The second elastic element 222 connects the bracket 21 and the first movable element 221. After the door 300 is opened, the second elastic element 222 can maintain the force balance of the rotating hook arm 2214, so that the rotating hook arm 2214 is in a balanced position. When the first movable element 221 is engaged with the retaining member 10, the second elastic element 222 can apply an elastic force to the first movable element 221, so that the first movable element 221 rotates, thereby driving the door 300 to close through the retaining member 10.

[0184] Specifically, the first end 2221 of the second elastic element 222 is connected to the bracket 21, and the second end 2222 of the second elastic element 222 is connected to the first movable element 221. When the second end 2222 of the second elastic element 222 is located on the first side, the second elastic element 222 applies a rotating thrust to the first movable element 221 toward the first side, where the first side is the side of the first straight line Z passing through the rotation center of the first movable element 221 and the first end 2221. When the second end 2222 of the second elastic element 222 is located on the second side of the first straight line Z, the second elastic element 222 applies a rotating thrust to the first movable element 221 toward the second side, where the second side is the other side of the first straight line Z passing through the rotation center of the first movable element 221 and the first end 2221. The first side and the second side are located on opposite sides of the first straight line Z.

[0185] The torsion spring stores force during the opening of the door 300, and after the door 300 opens, it keeps the rotating hook arm 2214 of the first movable member 221 rotating in the second direction, so that the first movable member 221 is kept in a first position in equilibrium, i.e., the equilibrium position. The second direction can be, for example, clockwise.

[0186] The torsion spring can release stored force during the closing of the door 300 and cause the first movable member 221 to rotate in a first direction, so as to drive the door 300 to close through the holding member 10. The first direction can be, for example, counterclockwise.

[0187] It should be noted that the first direction in the embodiments of this application is opposite to the second direction, and the first direction is the direction from the first position to the second position.

[0188] The embodiment of this application drives the first movable member 221 to rotate by a torsion spring, so that there is no need to apply external force to the door body 300 to close the door. It can realize automatic closing after a light push. The structure is simple and easy to implement, and the cost of the torsion spring is low, thereby reducing the cost.

[0189] In detail, during the process of closing the door 300 by rotating the first movable member 221 driven by the torsion spring, the second holding part 12 first contacts the blocking limit member 50, and then contacts the first movable member 221 on the bracket 21. Under the action of inertial force, the second holding part 12 pushes the rotating hook arm 2214 of the first movable member 221 to rotate past the inflection point of the horizontal component force of the torsion spring, and the second holding part 12 engages with the first movable member 221. The second holding part 12 rotates under the action of the torsion spring torque, pulling the door 300 forward, and causing the first holding part 11 to move up along the ramp 2111 of the bracket 21. After gradually sliding past the highest point of the ramp, it triggers the second micro switch 27, which locks the first holding part 11 through the first locking member 70.

[0190] In some embodiments of this application, the first latching part 11 can be mounted on the door body 300 through the positioning hole 330 inside the door body 300 and the door hook spring 320. As the first latching part 11 moves upward along the ramp 2111 of the bracket 21, the door hook spring 320 deforms. Then, under the spring restoring force of the door hook spring 320 inside the door body 300, the first hook 110 of the first latching part 11 quickly contacts the contact of the second micro switch 27, activating the second micro switch 27 to lock the first latching part 11 through the first locking member 70. At this time, the first movable member 221, under the torsion of the torsion spring, pulls the second latching part 23 forward slowly and synchronously, causing the door body 300 to move forward synchronously to close the door.

[0191] The door hook spring 320 provides the first hook 110 of the first holding part 11 to hold the pulling force that triggers the second micro switch 27.

[0192] Please refer to Figures 5A16 to 5A22. In another embodiment, the door lock device 100 includes a second elastic element 222, which is a tension spring mechanism 94. The tension spring mechanism 94 is disposed on the side of the bracket 21 opposite to the blocking limit member 50. The tension spring mechanism 94 includes a first tension spring 941 and a second tension spring 942. The first tension spring 941 and the second tension spring 942 have a tension difference of rotation angle, which enables the rotating hook arm 2214 to maintain force balance when the door is opened, so that the rotating hook arm 2214 is in a balanced position. The first tension spring 941 and the second tension spring 942 provide the tension when the door 300 is closed.

[0193] In other words, the embodiment of this application drives the first movable member 221 to rotate through the tension spring mechanism 94, so that it is not necessary to apply external force to the door body 300 to close the door. It can also achieve automatic closing after a light push. The structure is simple and easy to implement, and the tension spring mechanism 94 has a low cost, thereby reducing costs.

[0194] Understandably, in the related technology, after the door 300 is opened, if the first movable member 221 of the door lock device 100 is abnormally touched, the force balance maintained by the first tension spring 941 and the second tension spring 942 on the rotating hook arm 2214 of the first movable member 221 will be disrupted, driving the rotating hook arm 2214 to rotate to a position far from the equilibrium position, causing the door 300 to fail to close.

[0195] The door lock device 100 of this application provides the pulling force of the door body 300 when closing by a first tension spring 941 and a second tension spring 942 mounted on the side of the bracket 21 opposite to the blocking and limiting member 50. At the same time, the difference in tension between the rotation angles of the first tension spring 941 and the second tension spring 942 can be used to ensure that the first movable member 221 maintains force balance and remains stable in the balance position of the bracket 21 when opening the door.

[0196] It should be noted that the tension spring mechanism 94 in this embodiment is equivalent to the torsion spring described in the above embodiments. Both operate on the same principle of driving the first movable member 221 to rotate, and will not be repeated here. That is to say, this embodiment can not only achieve automatic closing and opening of the door 300 by gently pushing it, but also by driving the first movable member 221 to rotate using the torsion spring, and vice versa.

[0197] In this embodiment, the first movable member 221 can be driven to rotate by the action of the torsion spring or tension spring mechanism 94 and the damping component 30, so as to achieve automatic deceleration and closing of the door 300 by pushing lightly.

[0198] In other embodiments of this application, the second elastic element 222 may also be a tension spring, an electromagnetic drive component, or other components, and there is no limitation on this.

[0199] Please refer to Figures 5A1 to 6C. The door lock device 100 also includes a first micro switch 26 and a second locking member 82 disposed on the bracket 21. The first micro switch 26 is used to control the second locking member 82 to lock the second holding part 12.

[0200] When the door 300 is closed, the second holding part 12 is pushed by the force to rotate the hook arm 2214 away from the balance position, and the second elastic member 222 provides a pulling force to pull the second holding part 12 until the first micro switch 26 is triggered, so that the second holding part 12 is locked by the second locking member 82 to close the door 300.

[0201] Specifically, please refer to Figures 5A1-5A15 and Figure 6C. In one embodiment, the door lock device 100 further includes a first micro switch 26 and a second locking member 82 disposed on the bracket 21. The first micro switch 26 is used to control the second locking member 82 to lock the second latching part 12. When the door 300 is closed, the second latching part 12 is pushed by a thrust to move the rotating hook arm 2214 away from the equilibrium position. The torsion spring provides a pulling force to pull the second latching part 12 until it triggers the first micro switch 26, so that the second latching part 12 is locked by the second locking member 82 to close the door 300.

[0202] Please refer to Figures 5A16 to 5A22. In another embodiment, the door lock device 100 further includes a first micro switch 26, a rotary lever 81, and a second locking member 82 disposed on the bracket 21. The first micro switch 26 controls the second locking member 82 to lock the second latching part 12. When the door 300 is closed, the second latching part 12 is pushed by a thrust to move the rotating hook arm 2214 away from the equilibrium position. The tension spring mechanism 94 provides a pulling force to pull the second latching part 12 until it pushes the rotary lever 81 to rotate, thereby triggering the first micro switch 26, so that the second latching part 12 is locked by the second locking member 82 to close the door 300.

[0203] Specifically, the second locking element 82 can be an electromagnet 821 and a lever 822. The bracket 21 is provided with an electromagnet mounting seat 218 corresponding to the electromagnet 821, a lever mounting seat 2112 corresponding to the lever 822, and a sliding groove 219 corresponding to the lever 822.

[0204] After the door 300 is fully closed, the second latching part 12, the first latching part 11, and the first movable part 221 all stop moving. At this time, the arc-shaped working surface of the first movable part 221 abuts against the first micro switch 26 and actuates, activating the energizing circuit formed by the first micro switch 26, the electromagnet 821, and the lever 822. The electromagnet 821 then triggers the working push lever 822 to move to one end of the slide groove 219 on the bracket 21, interlocking and locking the second latching part 12, thereby locking the door 300.

[0205] During the process of opening the door 300 by rotating the first movable member 221 through the second elastic member 222 (i.e., the torsion spring), while the cooking appliance 1000 is powered on, an electrical signal can be output to the electromagnet 821 by touching the control panel button on the cooking appliance 1000. The electromagnet 821 drives the lever 822 to move to the other end of the slide groove 219, thereby unlocking the entire interlock of the second locking part 12. After unlocking, the locking member 10 fixed on the door 300 begins to slide out of the housing 200 under the action of external force. The first locking part 11 and the second micro switch 27 first disengage, and then the first hook 110 of the first locking part 11 disengages from the rotating hook arm 2214 of the first movable member 221. During this process, the torsion spring stores elastic potential energy.

[0206] That is, during the opening of the door 300, the first latching part 11 moves away from the trigger point of the second micro switch 27, moves to the highest point of the bracket 21, and then moves away from the door lock device 100 via the ramp 2111. The second latching part 12 then pulls the first movable part 221 to rotate in the second direction, while the contact of the first micro switch 26 releases its pressure on the lever 822, thus switching the lever 822 from the first end to the second end. Finally, the second hook 120 of the second latching part 12 completely disengages from the bracket 21, at which point the door 300 is fully opened.

[0207] In summary, in one embodiment of this application, the closing process of the cooking appliance 1000 is as follows:

[0208] Please refer to Figures 5A5 to 5A9 and 5A13 to 5A15. When a pushing force is applied to the door 300, the door 300 moves into the bracket 21. The second latching part 12 first contacts the first inclined surface 54 of the blocking limit member 50 and applies downward pressure to the blocking limit member 50, causing the blocking limit member 50 to rotate around the pivot 217. The second latching part 12 can be pushed by the pulling force of the second elastic member 222 to start the first movable member 221 to start rotating automatically. The first latching part 11 moves upward along the ramp 2111 of the bracket 21 until the second micro switch 27 is triggered. The first locking member 70 locks the first latching part 11, realizing automatic door closing after the pushing force is applied.

[0209] After the first movable member 221 rotates through a predetermined angle along the second direction, the first movable member 221 disengages from the limiting groove 51 of the blocking limiting member 50, and the damping member 30 cooperates with the first movable member 221. The second end 2222 of the second elastic member 222 is located on the side of the first straight line Z away from the door body 300. The second elastic member 222 releases the stored force and drives the first movable member 221 to rotate along the second direction, so that the first movable member 221 pulls the second holding part 12 to drive the door body 300 to continue to close, and the damping member 30 can slow down the closing speed of the door body 300.

[0210] It is understandable that the opening process of the cooking appliance 1000 is the reverse of the closing process, as detailed below:

[0211] Please refer to Figures 5A8 to 5A9 and 5A13 to 5A15. After the cooking appliance 1000 has finished operating, pulling the door 300 causes the second holding part 12 to rotate the first movable part 221, and the first holding part 11 to rotate the first locking part 70. During this process, the second elastic member 222 stores force. After the second holding part 12 disengages from the first movable part 221 and the second holding part 12 completely disengages from the blocking and limiting member 50, and after the first holding part 11 disengages from the first locking member 70, the door 300 is fully opened. The second end 2222 is located on the side of the first straight line Z closest to the door 300, so that the second elastic member 222 applies a rotational force to the first movable part 221 in the first direction, which keeps the first movable part 221 in the first position.

[0212] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and they should all be covered within the scope of the claims and specification of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A door lock device for locking a door body and a housing of a cooking appliance, wherein, The application relates to a lock assembly, comprising: a lock assembly arranged on the housing, the lock assembly being provided with a clamping end; a clamping piece arranged in sliding connection with the door body in a first direction, the clamping piece comprising a first clamping part and a second clamping part, the first clamping part and the second clamping part being arranged in the first direction at intervals, the first clamping part being provided with a first hook body, the first hook body being provided with a first avoiding groove on one side in the first direction, the second clamping part being provided with a second hook body, the second hook body being provided with a second avoiding groove on one side in the first direction, the first avoiding groove and the second avoiding groove being arranged in the same direction, the clamping piece being arranged to drive the first hook body and the second hook body to lock with different positions of the lock assembly when being driven, the first hook body and the second hook body being in the locking state, a first part of the lock assembly being clamped in the first avoiding groove, a second part of the lock assembly being clamped in the second avoiding groove, the first part and the second part being arranged in the first direction at intervals, the first direction being perpendicular to the clamping direction of the clamping piece; a first elastic piece, one end of the first elastic piece being connected with the clamping piece, the other end of the first elastic piece being arranged in connection with the door body, the first elastic piece having a first state and a second state, in the first state, the elastic force of the first elastic piece has a tendency to slow down the clamping of the first clamping part and the second clamping part with the lock assembly, in the second state, the elastic force of the first elastic piece has a tendency to keep the clamping of the first clamping part and the second clamping part with the lock assembly in the first direction.

2. The door lock device according to claim 1, wherein The lock assembly comprises a support, the support being provided with the clamping end, the support being provided with a clamping channel, one end of the clamping channel being through the clamping end, the other end of the clamping channel being provided with a clamping port, the clamping channel being provided with an abutting surface, in the direction from the second clamping part to the first clamping part, the minimum size of any position on the abutting surface to the clamping end shows an increasing tendency, the first hook body having a first locking state of moving from the clamping end to the abutting surface and sliding from the abutting surface to the clamping port, and a first unlocking state of being separated from the clamping port, the part of the abutting surface of the clamping channel being the first part, when the first hook body slides on the abutting surface, the first elastic piece is in the first state, so that the first hook body and the abutting surface generate extrusion force, when the first clamping part is in the first locking state, the first elastic piece is in the second state, so as to keep the clamping of the first hook body and the clamping port.

3. The door lock device according to claim 2, wherein The first hook body comprises a first hook head and a first hook arm, the first hook head and the first hook arm are connected, the first hook head and the first hook arm jointly define the first avoiding slot, the first edge of the clamping interface is located in the first avoiding slot, when the first hook body is in the first locking state, the gap between the surface of the first hook head and the first edge in the direction from the first clamping part to the second clamping part has an increasing trend, and the gap is the size in the clamping direction.

4. The door latch arrangement of claim 2, wherein, The locking assembly further comprises a first locking mechanism, the first locking mechanism is arranged on the support, the first locking mechanism has a first clamping groove, the second hook body has a second locking state of being clamped with the first clamping groove from the clamping end and a second unlocking state of being separated from the first clamping groove and exiting from the clamping end.

5. The door latch arrangement of claim 4, wherein, The first locking mechanism comprises: a first movable part, which is rotationally connected with the support, an axis of rotation of the first movable part relative to the support is perpendicular to the first direction, the first movable part has the first clamping groove, and part of a wall of the first clamping groove is the second part; a second elastic part, a first end of the second elastic part is rotationally connected with the support and has a first rotation center, a second end of the second elastic part is rotationally connected with the first movable part and has a second rotation center, a center of rotational connection of the first movable part relative to the support is a third rotation center, on a first cross section of the first movable part, a straight line passing through the third rotation center and the second rotation center is a first straight line, in a process of switching of the second hook body from the second unlocking state to the second locking state, a locus curve of the second rotation center intersects the first straight line, and an axis of rotation of the first movable part relative to the support is perpendicular to the first cross section.

6. The door latch arrangement of claim 5, wherein, The first locking mechanism further comprises a third elastic part, the third elastic part is arranged on the support, and when the second hook body is in the second unlocking state, the third elastic part abuts against the first movable part and is in a compressed state.

7. The door latch arrangement of claim 5, wherein, The locking assembly further comprises a damping part, the damping part is arranged on the support, and the damping part is used for providing a damping force to the first movable part to slow down a speed of the second hook body clamped into the first clamping groove.

8. The door latch arrangement of claim 7, wherein, The first movable part has a partially outward convex circular arc surface, an axis of rotation of the first movable part relative to the support coincides with an axis of the circular arc surface, the circular arc surface is provided with a plurality of engagement teeth arranged continuously along a circumferential direction of the circular arc surface, the damping part comprises a damper and a rack, the rack is slidingly connected with the support in the first direction, the rack is engaged with the engagement teeth, the rack is arranged to be driven and moves linearly relative to the support in a length direction of the rack, and an active end of the damper cooperates with one end of the length direction of the rack.

9. The door latch arrangement of claim 2, wherein, The locking assembly further comprises a first micro switch, the first micro switch is arranged on the support, and when the first hook body is in the locking state, the first hook body triggers the first micro switch. And / or, the locking assembly further comprises a second micro switch, the second micro switch is arranged on the bracket, when the second hook body is in the locking state, the second hook body triggers the second micro switch.

10. A door locking device wherein, The door lock device comprises: a bracket for being mounted at an opening of a housing; a clamping member for being fixed to a door body, the door body being mounted at the opening of the housing, the door body being rotatably connected with the housing to open or close the opening of the housing; a first movable member mounted on the bracket and rotatable relative to the bracket, the first movable member being used to cooperate with the clamping member to drive the door body to close during closing of the door body; and a blocking limiting member rotatably mounted on the bracket, the blocking limiting member being capable of limiting rotation of the first movable member when the door body is in an open state.

11. The door latch arrangement of claim 10, wherein, The first movable member comprises a rotating hook arm, and the blocking limiting member comprises a limiting clamping groove, the limiting clamping groove being engaged with the rotating hook arm to limit rotation of the first movable member when the door body is in the open state.

12. The door latch arrangement of claim 11, wherein, The door lock device further comprises a third elastic member, the blocking limiting member further comprises an elastic member mounting seat located on a surface of the blocking limiting member opposite to the limiting clamping groove, a first end of the third elastic member being fixedly mounted on the elastic member mounting seat, and a second end of the third elastic member being fixedly mounted on the bracket.

13. The door latch arrangement of claim 12, wherein, The blocking limiting member is provided with a rotating hole, and the bracket is provided with a rotating shaft corresponding to the rotating hole, the blocking limiting member being rotatably mounted on the rotating shaft through the rotating hole; or the blocking limiting member is provided with a rotating shaft, and the bracket is provided with a rotating hole corresponding to the rotating shaft, the blocking limiting member being rotatably mounted on the rotating hole through the rotating shaft.

14. The door latch arrangement of claim 13, wherein, The clamping member comprises a mounting portion and a second clamping portion provided on the mounting portion, the second clamping portion being formed with a second clamping hook; The first movable member is provided with a first clamping groove, the first movable member being capable of being driven by the second clamping portion to close the door body when the second clamping hook is engaged with the first clamping groove; The blocking limiting member is further provided with a first inclined surface, the second clamping portion pushing the first inclined surface to drive the blocking limiting member to rotate around the rotating shaft as a center of rotation under the action of a pushing force when the door body is being closed; The second clamping portion pushes the first inclined surface to drive the first movable member to rotate in the direction of the pushing force to release the rotating hook arm under the action of the pushing force when the door body is being closed, the bottom of the second clamping portion always pressing the top of the blocking limiting member during closing of the door body; When the door body is being opened, the bottom of the second clamping portion always presses the top of the blocking limiting member until the second clamping hook of the second clamping portion is disengaged from the first clamping groove to enable the limiting clamping groove to limit the rotating hook arm, and then the second clamping portion is separated from the blocking limiting member.

15. The door latch arrangement of claim 14, wherein, The blocking limiting piece further comprises a second inclined surface opposite to the first inclined surface on the limiting clamping groove, and the second inclined surface is spaced apart from the second clamping part by a preset distance when the blocking limiting piece rotates.

16. The door latch arrangement of claim 15, wherein, The clamping piece further comprises a first clamping part arranged on the mounting part, and the first clamping part is arranged in a spaced-apart manner with the second clamping part. The door locking device further comprises a first locking part and a second micro switch arranged on the support, and the second micro switch is used to control the first locking part to lock the first clamping part. When the first clamping part contacts the second micro switch, the second micro switch is triggered, so that the first clamping part is locked by the first locking part.

17. The door latch arrangement of claim 16, wherein, The door locking device further comprises a second elastic member, which is a torsion spring, and the second elastic member connects the support and the first movable part. After the door body is opened, the second elastic member can balance the holding force of the rotating hook arm, so that the rotating hook arm is in a balanced position. In the case that the first movable part cooperates with the clamping piece, the second elastic member can apply an elastic force to the first movable part, so that the first movable part rotates to drive the door body to close through the clamping piece.

18. The door latch arrangement of claim 16, wherein, The door locking device further comprises a second elastic member, which is a tension spring mechanism, and the tension spring mechanism is arranged on the side of the support opposite to the blocking limiting piece. The tension spring mechanism comprises a first tension spring and a second tension spring, and the first tension spring and the second tension spring have a difference in tension angle, which can balance the holding force of the rotating hook arm when the door is opened, so that the rotating hook arm is in a balanced position. The first tension spring and the second tension spring provide a pulling force when the door body is closed.

19. The door latch arrangement of claim 17 or 18, wherein, The door locking device further comprises a first micro switch and a second locking part arranged on the support, and the first micro switch is used to control the second locking part to lock the second clamping part. When the door body is closed, the second clamping part is pushed away from the balanced position by the second elastic member, and the second elastic member provides a pulling force to pull the second clamping part until the first micro switch is triggered, so that the second clamping part is locked by the second locking part to close the door body.

20. The door latch arrangement of claim 10, wherein, The door locking device further comprises a damping part mounted on the support, and the damping part is used to provide a damping force to slow down the rotation speed of the first movable part, so as to slow down the closing speed of the door body.

21. A cooking appliance, wherein, It comprises: A shell, an inner part of the shell forms a cavity, and a front end of the shell is provided with a door opening communicating with the cavity; A door body configured to cover the door opening, one end of the door body is pivotally connected with the shell; The door lock device according to any one of claims 1-9, wherein the clamping member is slidably connected with the door body along the first direction, the other end of the first elastic member is connected with the door body, the first clamping part and the second clamping part extend from the door body to a side of the door opening, the locking assembly is installed in the housing, when the door body is closed with the door opening cover, the first hook body and the second hook body are locked with the locking assembly at different positions respectively, and when the door body is in an open state, the first hook body and the second hook body are separated from the locking assembly respectively.

22. A cooking appliance, wherein, Comprising: a housing; a door body, the door body being rotatably connected with the housing; and the door lock device according to any one of claims 10-20, wherein the bracket is installed at an opening of the housing, and the clamping member is arranged on the door body. ​

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