Door lock device and cooking electric appliance

Abstract

The utility model discloses a door lock device and a cooking electric appliance, and relates to the technical field of household appliances. The door lock device comprises a clamping piece which is used for being installed on a door body and comprises a first clamping part; the locking assembly comprises a support and a first locking mechanism, the first locking mechanism is arranged on the support and comprises a first movable part and a first elastic part, the first movable part is rotationally connected with the support and provided with a first clamping groove, the first end of the first elastic part is connected with the support, and the second end of the first elastic part is connected with the first movable part. On the first cross section of the first movable part, a straight line passing through the center of the first movable part rotating relative to the support and the center of the first end is a first straight line, and the included angle a between the first straight line and the first direction is larger than or equal to 20 degrees and smaller than or equal to 70 degrees. And a is greater than or equal to 20 degrees and less than or equal to 70 degrees, so that the probability of interference between the bracket and the first movable piece and between the bracket and the first movable piece can be reduced, and the clamping reliability of the first clamping groove and the first clamping part is improved.

Description

Technical Field

[0001] This application relates to the field of home appliance technology, specifically to a door lock device and a cooking appliance. Background Technology

[0002] The door and casing of cooking appliances are locked by a door lock device. Specifically, the locking is maintained by the elastic force of the elastic component inside the door lock device. However, during the locking process, it is easy for the door to not be properly locked. Utility Model Content

[0003] In view of the above problems, this application provides a door lock device and a cooking appliance that can improve the situation where the door lock device cannot be properly engaged during the engagement process.

[0004] 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:

[0005] A retaining element for installation on a door body, the retaining element including a first retaining part;

[0006] A locking assembly includes a bracket and a first locking mechanism. The bracket is used to connect to a housing. The first locking mechanism is disposed on the bracket and includes a first movable member and a first elastic member. The first movable member is rotatably connected to the bracket and has a first slot. A first holding part has a first locked state that engages with the first slot and a first unlocked state that is separated from the first slot. A first end of the first elastic member is rotatably connected to the bracket, and a second end of the first elastic member is rotatably connected to the first movable member and has a first rotation center and a second rotation center. The center of rotation of the first movable member relative to the bracket is a third rotation center. On a first cross-section of the first movable member, a straight line passing through the third rotation center and the second rotation center is a first straight line. The angle between the first straight line and a first direction is α, where 20°≤α≤70°. The first direction is perpendicular to the engaging direction of the first holding part. The first direction and the first cross-section are perpendicular to the axis of rotation of the first movable member relative to the bracket. During the process of the first holding part switching from the first unlocked state to the first locked state, the trajectory curve of the second rotation center intersects with the first straight line.

[0007] Setting 'a' to be greater than or equal to 20° reduces the probability of interference between the first end of the bracket and the first end of the first elastic member during the first latching process, allowing the first latching part to be inserted into the predetermined latching position. In cooking appliances, this can make the door close more tightly. Setting 'a' to be less than or equal to 70° reduces the probability of interference between the first end of the bracket and the first end of the first elastic member and the first moving member, thereby improving the reliability of the latching between the first slot and the first latching part.

[0008] In one embodiment of this application, 40°≤a≤50°.

[0009] In one embodiment of this application, the first elastic element is a first torsion spring, the first end of the first torsion spring is rotatably connected to the bracket, and the second end of the first torsion spring is rotatably connected to the first movable element.

[0010] In one embodiment of this application, the first elastic element is an elastic telescopic rod. The first end of the elastic telescopic rod is rotatably connected to the bracket and has a first rotation axis. The second end of the elastic telescopic rod is rotatably connected to the first movable element and has a second rotation axis. The rotation axis of the first movable element relative to the bracket, the first rotation axis, and the second rotation axis are parallel to each other.

[0011] In one embodiment of this application, the first locking mechanism further includes a second elastic member disposed on the bracket. When the first holding part is in the first unlocked state, the second elastic member abuts against the first movable member, and the second elastic member is in a compressed state.

[0012] In one embodiment of this application, the locking component further includes a first micro switch, which is disposed on the bracket. When the first holding part is in a locked state, the first moving member triggers the first micro switch.

[0013] 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 first holding part engages with the first slot.

[0014] 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 along the circumference of the arc surface. The damping component includes a damper and a rack. The rack is slidably connected to the bracket along 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 is connected to one end of the rack in the length direction.

[0015] In one embodiment of this application, the first movable member includes a rotating hook arm, and the locking assembly further includes a blocking and limiting member. The blocking and limiting member is located on the side of the first movable member having a first slot. The blocking and limiting member is movably mounted on the bracket. The blocking and limiting member has a limiting slot. When the first holding part moves out from the locking end, the limiting slot engages with the rotating hook arm to limit the rotation of the first movable member relative to the bracket. The blocking and limiting member is configured to be driven by the first holding part to separate the limiting slot from the rotating hook arm.

[0016] In one embodiment of this application, the blocking limit member is rotatably connected to the bracket, and the locking assembly further includes a third elastic member. The third elastic member is located on the side of the blocking limit member away from the first movable member. The third elastic member abuts against the bracket and the blocking limit member respectively. When the rotating hook arm is in the latching state, the elastic force of the third elastic member can cause the limiting slot to remain in the latching state with the rotating hook arm.

[0017] In one embodiment of this application, the retaining member further includes a second retaining portion, which is spaced apart from the first retaining portion along a first direction. The locking component further includes a second locking mechanism, which is spaced apart from the first locking mechanism along a first direction. The second locking mechanism is movably connected to the bracket. The second locking mechanism has a second slot. The second retaining portion has a second locked state that engages with the second slot and a second unlocked state that moves out of the second slot. The first direction is perpendicular to the insertion direction. When the second locking mechanism is in the second unlocked state, the second locking mechanism has a tendency to slow down the second retaining portion from entering the second slot. When the second retaining portion is in the locked state, the second locking mechanism has a tendency to prevent the second retaining portion from separating from the second slot.

[0018] In one embodiment of this application, the second locking mechanism includes:

[0019] The second movable component is rotatably connected to the bracket, and the second movable component has a second slot.

[0020] The fourth elastic member has a first connecting end connected to the bracket and a second connecting end connected to the second movable member. When the second holding part is in the second unlocked state, the fourth elastic member tends to slow down the second holding part from entering the second slot. When the second holding part is in the second locked state, the fourth elastic member tends to keep the second holding part engaged with the second slot.

[0021] In one embodiment of this application, the first connecting end and the bracket have a first rotation center, the second connecting end and the second movable member have a second rotation center, the second movable member has a third rotation center relative to the bracket, and on the second cross section of the second movable member, the straight line passing through the third rotation center and the first rotation center is the second straight line. During the process of the second holding part switching from the second unlocked state to the second locked state, the trajectory curve of the second rotation center intersects with the second straight line, and the second cross section is perpendicular to the axis of rotation of the second movable member relative to the bracket.

[0022] In one embodiment of this application, the locking component further includes a second micro switch, which is disposed on the bracket and located between the first locking mechanism and the second locking mechanism. When the second holding part is in the locked state, the second moving member triggers the second micro switch.

[0023] Secondly, this application provides a cooking appliance, comprising:

[0024] The shell has an interior cavity, and the front end of the shell has a doorway that communicates with the cavity.

[0025] The door body is configured to fit with the doorway cover, with one end of the door body pivotally connected to the housing.

[0026] In the first aspect of the door lock device, a latching member is installed on the door body, and a first latching part extends from the side of the door body toward the doorway. A locking component is installed inside the housing. When the door body is closed with the doorway, the first latching part is in a first locked state, and when the door body is open, the first latching part is in a first unlocked state.

[0027] 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

[0028] 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:

[0029] Figure 1 This is an isometric view of a door lock device in a locked state according to an embodiment of this application;

[0030] Figure 2 This is an exploded view of a door lock device according to an embodiment of this application;

[0031] Figure 3A This is a side view of a door lock device in the unlocked state according to an embodiment of this application;

[0032] Figure 3B This is a side view of the process by which a retaining element engages with a locking component in a door lock device according to an embodiment of this application;

[0033] Figure 3C This is a side view of a door lock device in a locked state according to an embodiment of this application;

[0034] Figure 3D This is a side view of a door lock device in an unlocked state according to another embodiment of this application;

[0035] Figure 4 This is a first-view axonometric view of a cooking appliance according to an embodiment of this application.

[0036] Figure 5This is a partial isometric view of a cooking appliance according to an embodiment of this application at a second time.

[0037] The reference numerals in the detailed embodiments are as follows:

[0038] 1000. Cooking appliances;

[0039] 100. Door locking device;

[0040] 200. Shell;

[0041] 300. Door body;

[0042] 10. Holding component; 11. First holding part; 111. Hook head; 112. Hook rod; 12. Second holding part; 121. Hook head; 122. Hook handle; 123. Clearance groove; 13. Mounting part;

[0043] 20. Locking assembly; 21. Bracket; 211. Snap-in end; 212. First limiting part; 213. Second limiting part; 22. First locking mechanism; 221. First moving part; 2211. First slot; 22111. Clearance part; 22112. First guide surface; 2212. Engaging tooth; 2213. Rotating hook arm; 222. First elastic element; 2221. First end; 2222. Second end;

[0044] 23. Second locking mechanism; 231. Second movable component; 2311. Second slot; 232. Fourth elastic component; 2321. First connecting end; 2322. Second connecting end; 24. Third elastic component; 25. Blocking and limiting component; 251. Limiting slot; 252. Second guide surface; 26. Second elastic component; 27. Cover plate; 28. First micro switch; 29. ​​Second micro switch;

[0045] 30. Damping components; 31. Rack; 32. Damper;

[0046] X, insertion direction; Y, first direction; Z, first straight line; P, second straight line. Detailed Implementation

[0047] 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.

[0048] 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.

[0049] 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.

[0050] 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.

[0051] 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.

[0052] 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).

[0053] 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," and "circumferential" 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 are not intended to 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.

[0054] 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.

[0055] When the door is closed, the latching member engages with the locking component of the housing. The latching member drives the rotating component of the locking component to rotate, thereby changing the orientation of the rotating component's slot. The latching member is held in place by the force of the spring. However, during the engagement process, there is a possibility that the rotating component may not rotate to the predetermined position. Specifically, during the rotation of the rotating component, the distance between the connection point between the spring and the frame and the engagement end of the locking component may be too close. This can cause the latching member to abut against the connection point between the spring and the frame and fail to engage to the predetermined position, resulting in an engagement abnormality and affecting the reliability of the door lock device's engagement.

[0056] This application provides a door lock device in which 'a' is set to be greater than or equal to 20° and less than or equal to 70°. During the locking process of the locking part, the connection position of the first elastic member and the bracket can avoid the first locking part and the first movable member, so as to improve the reliability of the locking.

[0057] According to an embodiment of this application, a door lock device 100 is provided, please refer to... Figures 1-5A door lock device 100 is used for locking the door 300 of a cooking appliance 1000 to the housing 200. The door lock device 100 includes a locking assembly 20 and a retaining member 10. The retaining member 10 is used to install itself onto the door 300. The retaining member 10 includes a first retaining portion 11. The locking assembly 20 includes a bracket 21 and a first locking mechanism 22. The bracket 21 is connected to the housing 200. The first locking mechanism 22 is disposed on the bracket 21 and includes a first movable member 221 and a first elastic member 222. The first movable member 221 is rotatably connected to the bracket 21 and has a first slot 2211. The first retaining portion 11 has a first locked state where it engages with the first slot 2211 and a first unlocked state where it is separated from the first slot 2211. The first end 2221 of the first elastic member 222 is rotatably connected to the bracket 21 and has a first rotation center. The second end 2222 of 22 is rotatably connected to the first movable member 221 and has a second rotation center. On the first cross section of the first movable member 221, the straight line passing through the third rotation center and the second rotation center is the first straight line Z. The angle between the first straight line Z and the first direction Y is α, 20°≤a≤70°. The first direction Y is perpendicular to the insertion direction X of the first clamping part 11. The first direction Y and the first cross section are perpendicular to the axis of rotation of the first movable member 221 relative to the bracket 21. During the process of the first clamping part 11 switching from the first unlocked state to the first locked state, the trajectory curve of the second rotation center intersects with the first straight line Z.

[0058] In the cooking appliance 1000, the first direction Y can be the same as the height direction of the cooking appliance 1000, or it can be clamped to the height direction of the cooking appliance 1000. The specific setting can be determined according to actual needs. Taking a microwave oven as an example, the first direction Y is the same as the height direction of the microwave oven.

[0059] 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, thereby enabling the door body 300 to open and close. Alternatively, multiple door lock devices 100 can be provided, and the door body 300 can be detachably engaged with the housing 200 by the door lock device 100.

[0060] The first 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 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.

[0061] Setting 'a' to be greater than or equal to 20° can reduce the probability of interference between the first end 2221 of the first elastic member 222 and the first retaining part 11 during the first retaining part 11 engaging, so that the first retaining part 11 can be inserted into the predetermined engaging position. Specifically, when applied to the cooking appliance 1000, it can make the door 300 close more tightly. Setting 'a' to be less than or equal to 70° can reduce the probability of interference between the first end 2221 of the first elastic member 222 and the first moving member 221, so as to improve the reliability of the engagement between the first slot 2211 and the first retaining part 11. Preferably, 40°≤a≤50°. Setting a to greater than or equal to 40° allows the first end 2221 of the first elastic member 222 to be connected further away from the first holding part 11, thereby further reducing the probability of interference between the first end 2221 of the first elastic member 222 on the bracket 21 and the first holding part 11. Setting a to less than or equal to 50° allows the position on the bracket 21 connected to the first end 2221 of the first elastic member 222 to be further away from the first movable member 221, thereby further reducing the probability of interference between the position on the bracket 21 connected to the first end 2221 of the first elastic member 222 and the first movable member 221, thereby improving the reliability of the first holding part 11 engaging.

[0062] In one embodiment of this application, please refer to Figures 3A-3C The first elastic element 222 can be a first torsion spring. The first end 2221 of the first torsion spring is rotatably connected to the bracket 21, and the second end 2222 of the first torsion spring is rotatably connected to the first movable element 221.

[0063] The first end 2221 has a first rotation center that rotates relative to the bracket 21, and the second end 2222 has a second rotation center that rotates relative to the first movable member 221.

[0064] In one embodiment of this application, please refer to Figure 3DThe first elastic element 222 is a first elastic telescopic rod. One end of the first elastic telescopic rod is rotatably connected to the bracket 21 and has a first rotation axis. The other end of the first elastic telescopic rod is rotatably connected to the first movable element 221 and has a second rotation axis. The rotation axis of the first movable element 221 relative to the bracket, the first rotation axis, and the second rotation axis are parallel to each other. During the process of the first holding part 11 switching from the first unlocked state to the first locked state, the first movable element 221 is driven by the first holding part 11 and rotates relative to the bracket 21. At the same time, the first elastic element 222 swings relative to the bracket 21. The trajectory curve of the rotation center (second rotation center) between the first elastic telescopic rod and the first movable element 221 intersects the first straight line Z. When the first holding part 11 is in the unlocked state, the first movable member 221 remains in the unlocked state under the elastic force of the first elastic telescopic rod. When the first holding part 11 moves towards the first slot 2211 and overcomes the elastic force of the first elastic telescopic rod, the first movable member 221 rotates. When the second rotation center moves to the first straight line Z, the elastic force of the first elastic telescopic rod will not cause the first movable member 221 to rotate. As the first holding part 11 further causes the first movable member 221 to rotate, the component of the elastic force of the first elastic telescopic rod along the rotation direction of the first movable member 221 relative to the bracket 21 can cause the first holding part 11 to remain in the first slot 2211. In other words, during the locking process, the direction of the torque exerted by the first elastic telescopic rod on the first movable member 221 changes, so that the first movable member 221 has different rotational tendencies at different rotational positions.

[0065] The trajectory curve of the second rotation center is an arc and intersects with the first straight line Z. This allows the first elastic member 222 to provide elastic force in different directions to the first movable member 221 when the first locking part 11 is in the first unlocked state or the first locked state. Specifically, when the first locking part 11 is in the first unlocked state and located outside the locking assembly 20, the elastic force of the first elastic member 222 provides a component force to the first movable member 221 in the opposite direction of the locking direction X, thereby slowing down the entry of the first locking part 11 into the first slot 2211. When the first locking part 11 is in the first locked state, the elastic force of the second elastic member 26 provides the first movable member 221 with the same component force in the locking direction X, thereby preventing the first locking part 11 from separating from the first slot 2211.

[0066] The first elastic element 222 is a torsion spring or an elastic telescopic rod. Both can provide the first movable element 221 with a spring force to slow down the entry of the first holding part 11 into the first slot 2211 during the process of the first holding part 11 being engaged with the first slot 2211, and provide a spring force to prevent the first holding part 11 from separating from the first slot 2211 after being engaged.

[0067] In one embodiment of this application, please refer to Figure 3AThe first locking mechanism 22 also includes a second elastic member 26. The second elastic member 26 is disposed on the bracket 21. When the first holding part 11 is in the first unlocked state, the second elastic member 26 abuts against the first movable part 221 and the second elastic member 26 is in a compressed state.

[0068] The second elastic element 26 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.

[0069] During the engagement of the first holding part 11 with the first slot 2211, the first movable part 221 can separate from the second elastic part 26 when it rotates at a certain angle, or it can remain in contact with the second elastic part 26.

[0070] In the first unlocked state, the first movable member 221 remains balanced under the force of the second elastic member 26. On the one hand, when the first holding part 11 is unlocked, the second elastic member 26 can buffer the impact of the first movable member 221 on the bracket 21, so as to reduce the damage to the bracket 21 and extend the service life of the bracket 21. On the other hand, during the process of the first holding part 11 being inserted into the first slot 2211, the elastic force of the second elastic member 26 can offset part of the elastic force of the second elastic member 26, so as to reduce the thrust acting on the holding member 10 and make it easier to engage.

[0071] In one embodiment of this application, please refer to Figure 3A The locking component 20 also includes a first micro switch 28, which is disposed on the bracket 21. When the first holding part 11 is in the first locked state, the first moving part 221 triggers the first micro switch 28.

[0072] The connection between the first micro switch 28 and the bracket 21 includes, but is not limited to, snap-fit, screw connection or adhesive connection.

[0073] The first micro switch 28 can provide a door-closing signal for the first latching part 11 to engage with the first latching slot 2211, ensuring that the cooking appliance 1000 performs cooking operations after the door is closed. Taking a microwave oven as an example, this design can prevent the microwave oven from being started when the door is not closed tightly, avoiding potential harm to the human body caused by microwave leakage; at the same time, it can reduce heat loss during the cooking process.

[0074] In one embodiment of this application, please refer to Figure 2 The locking assembly 20 also 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 first holding part 11 engages with the first slot 2211.

[0075] The damping component 30 includes either an elastic telescopic rod or a damper 32.

[0076] The damping component 30 can further slow down the speed at which the first retaining part 11 enters the first slot 2211, 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. At the same time, after the first retaining part 11 enters the first slot 2211, the sound of the first retaining part 11 engaging with the first slot 2211 can also be reduced.

[0077] In one embodiment of this application, 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 along the circumference of 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 is connected to one end of the rack 31 in the length direction.

[0078] As an example, the bracket 21 is provided with a cover plate 27, which is detachably connected to the bracket 21. Specifically, it can be one or both of snap-fit ​​or screw connection, 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 disposed in the guide groove, and the damper 32 abuts against the end of the rack 31.

[0079] The damper 32 can be a unidirectional damper. In other examples, the damping component 30 can be a flexible telescopic rod, which can be one of the structures listed above.

[0080] As an example, the first slot 2211 can generally be a U-shaped slot.

[0081] During the process of the first retaining part 11 engaging with the first retaining slot 2211, the first retaining part 11 drives the first movable member 221 to rotate relative to the bracket 21. 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 first retaining part 11 enters the first retaining 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 retaining member 10 engaging with the locking assembly 20. In other examples, the rack 31 structure can be omitted, one end of the damper 32 abuts against the first movable member 221, and the other end of the damper 32 is hinged to the bracket 21.

[0082] In one embodiment of this application, please refer to Figures 3A-3DThe first movable member 221 includes a rotating hook arm 2213, and the locking assembly 20 also includes a blocking limit member 25. The blocking limit member 25 is located on the side of the first movable member 221 with a first slot 2211. The blocking limit member 25 is movably mounted on the bracket 21. The blocking limit member 25 has a limiting slot 251. When the first holding part 11 moves out from the holding end 211, the limiting slot 251 engages with the rotating hook arm 2213 to limit the rotation of the first movable member 221 relative to the bracket 21. The blocking limit member 25 is configured to be driven by the first holding part 11 to separate the limiting slot 251 from the rotating hook arm 2213.

[0083] 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 first holding part 11 being inserted into the first slot 2211, the first holding part 11 first abuts against the first guide surface 22112. The first holding part 11 is driven by an external force to make the first movable member 221 rotate. At this time, the position of the first slot 2211 relative to the first holding part 11 changes, and 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, the first elastic member 222 maintains the locking state under the force of the first elastic member 222.

[0084] As an example, the first slot 2211 has a clearance portion 22111, which allows a portion of the first holding portion 11 to have a certain amount of room to move within the first slot 2211 during the process of the first holding portion 11 entering the first slot 2211, thereby reducing the probability of interference during the engagement process. A portion of the clearance portion 22111 may connect with the aforementioned first guide surface 22112. In other examples, the width of the first slot 2211 may be slightly larger than the width of the first holding portion 11 (the portion located within the first slot 2211) to reduce the probability of interference between the first holding portion 11 and the first slot 2211 during the engagement process.

[0085] As an example, the first holding part 11 has a hook-shaped structure, including a hook rod 112 and a hook head 111. The hook head 111 is connected to the hook rod 112, which can be welded or integrally formed. A clearance area is formed between the hook head 111 and the hook rod 112 to accommodate at least a partial rotation of the hook arm 2213 during the locking process. Along the direction from the hook head 111 to the hook rod 112, the cross-sectional area of ​​the hook rod 112 increases progressively, which can improve the strength of the hook rod 112 and reduce stress concentration of the hook rod 112 during the locking process.

[0086] The limiting slot 251 can be, but is not limited to, a U-shaped slot, a trapezoidal slot, or a rectangular slot, etc., and can be designed according to actual needs.

[0087] The blocking and limiting member 25 is movably installed on the bracket 21, including: the blocking and limiting member 25 is slidably connected to the bracket 21, or the blocking and limiting member 25 is rotatably connected to the bracket 21.

[0088] As an example, the blocking and limiting member 25 is slidably connected to the bracket 21 along the first direction Y. Specifically, the bracket 21 is provided with a guide groove extending along the first direction Y, the blocking and limiting member 25 is disposed in the guide groove, and is capable of moving along the first direction Y. A spring or elastic telescopic rod is provided between the guide groove and the blocking and limiting member 25, and the elastic telescopic rod can be one of the structures listed above.

[0089] As an example, the end of the bracket 21 that receives the holding member 10 is the insertion end 211. The blocking and limiting member 25 is provided with a second guide surface 252 on the side facing the insertion end 211. Along the insertion direction X, the minimum distance from any position on the second guide surface 252 to the insertion end 211 increases. During the process of the first holding part 11 being inserted into the first slot 2211, the blocking and limiting member 25 is driven by the first holding part 11 and can squeeze the second guide surface 252 so that the limiting slot 251 moves away from the rotating hook arm 2213, thereby allowing the limiting slot 251 to separate from the rotating hook arm 2213, thereby releasing the restriction on the rotation of the first movable member 221 relative to the bracket 21, and finally realizing the engagement of the first holding part 11 with the first slot 2211.

[0090] As an example, the blocking and limiting member 25 is provided with a first magnet and a second magnet on the side opposite to the first movable member 221. The first magnet is connected to the blocking and limiting member 25 and can also be part of the blocking and limiting member 25. The second magnet is fixed to the bracket 21 and can also be part of the bracket 21. The first magnet and the second magnet are arranged opposite to each other, and the magnetic poles on the side facing each other are the same. The repulsive force between the first magnet and the second magnet can keep the rotating hook arm 2213 in a locked state with the limiting slot 251.

[0091] By rotating the hook arm 2213 and setting the limiting slot 251, the probability of the first moving part 221 being abnormally triggered can be reduced, thereby improving the reliability of the first holding part 11 engaging with the first slot 2211.

[0092] In one embodiment of this application, please refer to Figures 3A-3D The blocking and limiting member 25 is rotatably connected to the bracket 21. The locking assembly 20 also includes a third elastic member 24. The third elastic member 24 is located on the side of the blocking and limiting member 25 away from the first movable member 221. The third elastic member 24 abuts against the bracket 21 and the blocking and limiting member 25 respectively. When the rotating hook arm 2213 is in the latching state, the elastic force of the third elastic member 24 can cause the limiting slot 251 to remain in the latching state with the rotating hook arm 2213.

[0093] The third elastic element 24 includes a compression spring, an elastic telescopic rod, or a torsion spring.

[0094] As an example, the third elastic element 24 is a torsion spring. The third elastic element 24 can be set on the rotating shaft that rotatably connects the blocking and limiting member 25 and the bracket 21, or it can be not set on the rotating shaft, but one end of the third elastic element 24 abuts against the blocking and limiting member 25 and the other end abuts against the bracket 21, and the third elastic element 24 is located on the side of the blocking and limiting member 25 away from the first movable member 221.

[0095] As an example, the third elastic element 24 can be a compression spring. The third elastic element 24 is located on the side of the blocking and limiting element 25 away from the first movable element 221 and is offset from the circumferential direction of the rotation of the blocking and limiting element 25 and the bracket 21. One end of the third elastic element 24 abuts against the bracket 21, and the other end abuts against the blocking and limiting element 25. Under the elastic force of the third elastic element 24, the blocking and limiting element 25 tends to rotate toward the first movable element 221 so as to maintain the engagement state of the limiting slot 251 and the rotating hook arm 2213.

[0096] The third elastic element 24 enables the limiting slot 251 and the rotating hook arm 2213 to remain engaged, thereby reducing the probability of the first movable element 221 being abnormally triggered and further improving the reliability of the engagement between the first holding part 11 and the first slot 2211. Furthermore, by overcoming the elastic force of the third elastic element 24, the limiting slot 251 and the rotating hook arm 2213 can be disengaged, facilitating the engagement operation between the first holding part 11 and the first slot 2211. At the same time, during the engagement process, it can also provide damping force to the first holding part 11 to slow down the speed of entering the first slot 2211.

[0097] In one embodiment of this application, please refer to Figures 3A-3D The retaining member 10 also includes a second retaining part 12, which is spaced apart from the first retaining part 11 along the first direction Y. The locking component 20 also includes a second locking mechanism 23, which is spaced apart from the first locking mechanism 22 along the first direction Y. The second locking mechanism 23 is movably connected to the bracket 21. The second locking mechanism 23 has a second slot 2311. The second retaining part 12 has a second locked state that engages with the second slot 2311 and a second unlocked state that moves out of the second slot 2311. The first direction Y is perpendicular to the insertion direction X. When the second locking mechanism 23 is in the second unlocked state, the second locking mechanism 23 has the tendency to slow down the second retaining part 12 from entering the second slot 2311. When the second retaining part 12 is in the locked state, the second locking mechanism 23 has the tendency to prevent the second retaining part 12 from separating from the second slot 2311.

[0098] The second holding part 12 can be a metal part or a non-metal part.

[0099] As an example, the retaining member 10 also includes a mounting portion 13, with a first retaining portion 11 and a second retaining portion 12 respectively connected to the mounting portion 13. The connection between the first retaining portion 11 and the mounting portion 13, and the connection between the second retaining portion 12 and the mounting portion 13, include but are not limited to welding, screw connection, riveting, or integral molding.

[0100] As an example, the second holding part 12 is a hook structure, which includes a hook head 121 and a hook handle 122. The hook head 121 is connected to the hook handle 122, and the hook head 121 and the hook handle 122 together define an avoidance groove 123. When the second holding part 12 is in the second locked state, part of the hook head 121 is located in the second slot 2311, and part of the second movable part 231 is located in the avoidance groove 123.

[0101] As an example, in order to improve the reliability of the engagement between the second slot 2311 and the second holding part 12, the bracket 21 is provided with a first limiting part 212 and a second limiting part 213 for limiting the rotation angle of the second movable member 231. The first limiting part 212 and the second limiting part 213 are disposed at different positions of the bracket 21. When the second holding part 12 is located outside the locking assembly 20, the second movable member 231 abuts against the first limiting part 212. During the engagement between the second holding part 12 and the second slot 2311, the second limiting part 213 is used to limit the maximum rotation angle of the second movable member 231 relative to the bracket 21 (with the position where the second movable member 231 abuts against the first limiting part 212 as a reference position).

[0102] Thus, the second latching part 12 and the second latching slot 2311 can be engaged and disengaged, thereby enabling the door lock device 100 to open when the door is opened and lock when the door is closed.

[0103] In one embodiment of this application, please refer to Figures 3A-3D The second locking mechanism 23 includes a second movable member 231 and a fourth elastic member 232. The second movable member 231 is rotatably connected to the bracket 21 and has a second slot 2311. The first connecting end 2321 of the fourth elastic member 232 is connected to the bracket 21, and the second connecting end 2322 of the fourth elastic member 232 is connected to the second movable member 231. When the second holding part 12 is in the second unlocked state, the fourth elastic member 232 tends to slow the second holding part 12 from entering the second slot 2311. When the second holding part 12 is in the second locked state, the fourth elastic member 232 tends to keep the second holding part 12 engaged with the second slot 2311.

[0104] The fourth elastic element 232 includes, but is not limited to, any one of a torsion spring or an elastic telescopic rod.

[0105] As an example, the fourth elastic element 232 can be a torsion spring, so as to... Figure 3A As shown for reference, the first direction Y can be the vertical direction. The fourth elastic member 232 is located below the second movable member 231. The bracket 21 is provided with a first connecting hole, and the second movable member 231 is provided with a second connecting hole. The first connecting end 2321 of the fourth elastic member 232 is rotatably connected to the first connecting hole, and the second connecting end 2322 of the fourth elastic member 232 is rotatably connected to the second connecting hole. The insertion position of the fourth elastic member 232 and the second connecting hole is offset from the axis of rotation of the second movable member 231 and the bracket 21.

[0106] When the second holding part 12 abuts against the contact surface, the second movable member 231 can rotate. The second movable member 231 is impacted and rotates, and the fourth elastic member 232 is compressed to buffer the impact force between the second holding part 12 and the second movable member 231, thereby reducing noise. At the same time, it can slow down the speed at which the second movable member 231 enters the second slot 2311, thereby further reducing the noise generated by the engagement of the second holding part 12 and the second slot 2311. In other examples, the second movable member 231 is slidably connected to the bracket 21 along the first direction Y. A fourth elastic member 232 is provided between the second movable member 231 and the bracket 21. The fourth elastic member 232 is a compression spring. The end of the slot of the second slot 2311 has an inclined surface on the side near the insertion end 211. Along the direction from the first holding part 11 to the second holding part 12, the dimension from any point on the inclined surface to the insertion end 211 increases. During the insertion process of the second holding part 12, the second holding part 12 slides on the inclined surface, the second movable member 231 moves relative to the bracket 21, the fourth elastic member 231 is compressed, and the second holding part 12 slides into the second slot 2311 to achieve the snap-fit.

[0107] The fourth elastic element 232 slows down the speed at which the second latching part 12 engages with the second latching slot 2311. This buffers the noise from the impact between the door 300 and the housing 200 when the door closes, and also reduces the noise from the engagement between the second latching part 12 and the second latching slot 2311. Simultaneously, it allows the second latching part 12 to switch between unlocked and locked states by overcoming the elastic force of the fourth elastic element 232 through external force, facilitating opening and closing operations.

[0108] In one embodiment of this application, please refer to Figures 3A-3DThe first connecting end and the bracket have a first rotation center, the second connecting end and the second movable part have a second rotation center, the second movable part has a third rotation center relative to the bracket, and on the second cross section of the second movable part 231, the straight line passing through the third rotation center and the first rotation center is the second straight line P. During the process of the second holding part 12 switching from the second unlocked state to the second locked state, the trajectory curve of the second rotation center intersects with the second straight line P, and the second cross section is perpendicular to the axis of rotation of the second movable part 231 relative to the bracket 21.

[0109] As an example, please refer to Figure 3D The fourth elastic element 232 is a second elastic telescopic rod, which can be one of the structures listed above. One end of the second elastic telescopic rod is rotatably connected to the bracket 21, and the other end is rotatably connected to the second movable element 231. On the same plane perpendicular to the rotation axes of the second elastic telescopic rod and the bracket 21, during the transition from the second unlocked state to the second locked state of the second locking part 12, the second movable element 231 is driven by the second locking part 12 and rotates relative to the bracket 21. Simultaneously, the second elastic telescopic rod swings relative to the bracket 21, and the trajectory curve of the center of the hinge axis between the second elastic telescopic rod and the second movable element 231 intersects the second straight line P. When the second locking part 12 is in the second unlocked state, the second movable member 231 remains in the unlocked state under the elastic force of the second elastic telescopic rod. When the second locking part 12 moves towards the second slot 2311 and overcomes the elastic force of the second elastic telescopic rod, the second movable member 231 rotates. When the rotation center between the second elastic telescopic rod and the second movable member 231 moves to the second straight line P, the elastic force of the second elastic telescopic rod will not cause the second movable member 231 to rotate (the direction of the elastic force is the radial direction of the rotation axis of the second movable member 231 relative to the bracket 21). As the second locking part 12 further causes the second movable member 231 to rotate, the component of the elastic force of the second elastic telescopic rod along the rotation direction of the second movable member 231 relative to the bracket 21 can cause the second locking part 12 to remain in the second slot 2311. In other words, during the locking process, the torque direction of the second elastic telescopic rod on the second movable member 231 changes, so that the second movable member 231 has different rotational tendencies at different rotational positions.

[0110] During the engagement of the second latching part 12 with the second latching slot 2311, the second movable member 231 rotates clockwise, that is, the second movable member 231 rotates in the same direction as the second latching part 12, thus achieving engagement with the second latching slot 2311. The fourth elastic member 232 can slow down the speed at which the second latching part 12 engages with the second latching slot 2311. On the one hand, it can buffer the noise of the door 300 impacting the housing 200 when closing, and on the other hand, it can reduce the engagement noise between the second latching part 12 and the second latching slot 2311.

[0111] In one embodiment of this application, please refer to Figure 3A The locking component 20 also includes a second micro switch 29, which is disposed on the bracket 21 and located between the first locking mechanism 22 and the second locking mechanism 23. When the second holding part 12 is in the locked state, the second moving part 231 triggers the second micro switch 29 to generate a door closing signal.

[0112] The connection between the second micro switch 29 and the bracket 21 includes, but is not limited to, snap-fit, screw connection, or adhesive connection.

[0113] The second micro switch 29 can provide a door-closing signal for the second latching part 12 to engage with the second latching slot 2311, ensuring that the cooking appliance 1000 performs cooking operations after the door is closed. Taking a microwave oven as an example, this design can prevent the microwave oven from being started when the door is not closed tightly, avoiding potential harm to the human body caused by microwave leakage.

[0114] According to the embodiments of this application, please refer to Figures 1-5 A cooking appliance 1000 is proposed, including 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 installed on the door 300, and a first retaining portion 11 extends 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 retaining portion 11 is in a first locked state; when the door 300 is open, the first retaining portion 11 is in a first unlocked state.

[0115] Cooking appliances 1000 can include, but are not limited to, microwave ovens or electric ovens.

[0116] A cavity is a space used for cooking food.

[0117] The retaining element 10 can be installed on the door body 300 by means of screws, welding or riveting.

[0118] Taking a microwave oven as an example of a cooking appliance 1000, the first latching part 11 and the second latching part 12 are spaced vertically. During the closing process of the microwave oven, the first latching part 11 and the second latching part 12 are engaged with the locking component 20, which can improve the reliability of closing the door.

[0119] 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.

[0120] 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 the door and housing of a cooking appliance, characterized in that, include: A retaining element for installation on the door body, the retaining element including a first retaining part; A locking assembly includes a bracket and a first locking mechanism. The bracket is connected to the housing. The first locking mechanism is disposed on the bracket and includes a first movable member and a first elastic member. The first movable member is rotatably connected to the bracket and has a first slot. The first holding part has a first locked state that engages with the first slot and a first unlocked state that is separated from the first slot. The end of the bracket that receives the holding member is a locking end. The first end of the first elastic member is rotatably connected to the bracket and has a first rotation center. The second end of the first elastic member is rotatably connected to the first movable member and has a second rotation center. The center of rotation of the first movable member relative to the bracket is a third rotation center. On a first cross-section of the first movable member, a straight line passing through the third rotation center and the second rotation center is a first straight line. The angle between the first straight line and a first direction is α, where 20°≤α≤70°. The first direction is perpendicular to the locking direction of the first holding part. The first direction and the first cross-section are respectively perpendicular to the axis of rotation of the first movable member relative to the bracket. During the process of the first holding part switching from the first unlocked state to the first locked state, the trajectory curve of the second rotation center intersects the first straight line.

2. The door lock device according to claim 1, characterized in that, 40°≤a≤50°。 3. The door lock device according to claim 1, characterized in that, The first elastic element is a first torsion spring, the first end of the first torsion spring is rotatably connected to the bracket, and the second end of the first torsion spring is rotatably connected to the first movable element. Alternatively, the first elastic element is an elastic telescopic rod, the first end of which is rotatably connected to the bracket and has a first rotation axis, the second end of which is rotatably connected to the first movable element and has a second rotation axis, and the rotation axis of the first movable element relative to the bracket, the first rotation axis, and the second rotation axis are parallel to each other.

4. The door lock device according to claim 1, characterized in that, The first locking mechanism further includes a second elastic member disposed on the bracket. When the first holding part is in the first unlocked state, the second elastic member abuts against the first movable member, and the second elastic member is in a compressed state. And / or, the locking assembly further includes a first micro switch disposed on the bracket, wherein when the first holding part is in the locked state, the first movable member triggers the first micro switch.

5. The door lock device according to claim 1, characterized in that, The locking assembly further includes a damping component disposed on the bracket. The damping component is used to provide damping force to the first movable member to slow down the speed at which the first retaining part engages with the first slot.

6. The door lock device according to claim 5, characterized in that, The first movable component has a partially convex arc surface. The axis of rotation of the first movable component 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 along the circumference of the arc surface. The damping component includes a damper and a rack. The rack is slidably connected to the bracket along the 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 is connected to one end of the rack along its length direction.

7. The door lock device according to claim 1, characterized in that, The first movable component includes a rotating hook arm, and the locking assembly further includes a blocking and limiting component. The blocking and limiting component is located on the side of the first movable component with the first slot. The blocking and limiting component is movably mounted on the bracket. The blocking and limiting component has a limiting slot. When the first holding part moves out from the locking end, the limiting slot engages with the rotating hook arm to restrict the rotation of the first movable component relative to the bracket. The blocking and limiting component is configured to be driven by the first holding part to separate the limiting slot from the rotating hook arm.

8. The door lock device according to claim 7, characterized in that, The blocking and limiting member is rotatably connected to the bracket. The locking assembly also includes a third elastic member. The third elastic member is located on the side of the blocking and limiting member away from the first movable member. The third elastic member abuts against the bracket and the blocking and limiting member respectively. When the rotating hook arm is in the latching state, the elastic force of the third elastic member can cause the limiting slot to remain in the latching state with the rotating hook arm.

9. The door lock device according to any one of claims 1-8, characterized in that, The retaining member further includes a second retaining portion, which is spaced apart from the first retaining portion along a first direction. The locking component further includes a second locking mechanism, which is spaced apart from the first locking mechanism along the first direction. The second locking mechanism is movably connected to the bracket. The second locking mechanism has a second slot. The second retaining portion has a second locked state where it engages with the second slot, and a second unlocked state where it moves out of the second slot. The first direction is perpendicular to the engaging direction. When the second locking mechanism is in the second unlocked state, the second locking mechanism has a tendency to slow down the second retaining portion from entering the second slot. When the second retaining portion is in the locked state, the second locking mechanism has a tendency to prevent the second retaining portion from separating from the second slot.

10. The door lock device according to claim 9, characterized in that, The second locking mechanism includes: The second movable component is rotatably connected to the bracket, and the second movable component has the second slot. The fourth elastic member has a first connecting end connected to the bracket and a second connecting end connected to the second movable member. When the second holding part is in the second unlocked state, the fourth elastic member has the tendency to slow down the second holding part from entering the second slot. When the second holding part is in the second locked state, the fourth elastic member has the tendency to keep the second holding part engaged with the second slot.

11. The door lock device according to claim 10, characterized in that, The first connecting end and the bracket have a first rotation center, the second connecting end and the second movable member have a second rotation center, the second movable member has a third rotation center relative to the bracket, and on the second cross section of the second movable member, the straight line passing through the third rotation center and the first rotation center is the second straight line. During the process of the second holding part switching from the second unlocked state to the second locked state, the trajectory curve of the second rotation center intersects with the second straight line, and the second cross section is perpendicular to the axis of rotation of the second movable member relative to the bracket. And / or, the locking assembly further includes a second micro switch disposed on the bracket and located between the first locking mechanism and the second locking mechanism, wherein when the second holding part is in the locked state, the second moving part triggers the second micro switch.

12. A cooking appliance, characterized in that, include: A housing, wherein a cavity is formed inside the housing, and a doorway communicating with the cavity is provided at the front end of the housing; A door body configured to close with the doorway cover, one end of the door body being pivotally connected to the housing; The door lock device as described in any one of claims 1-11, wherein the latching member is installed on the door body, and the first latching portion extends from the side of the door body toward the doorway, the locking component is installed in the housing, and when the door body is closed to the doorway, the first latching portion is in a first locked state, and when the door body is open, the first latching portion is in a first unlocked state.

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