Door lock device and cooking appliance

Abstract

The application provides a door lock device and a cooking utensil, and relates to the technical field of household appliances. The door lock device comprises a first door hook, a support, a connecting piece and a limiting piece arranged on the support. The first door hook has a first hook-shaped part, and the connecting piece is used for hooking the first hook-shaped part. The limiting piece comprises a sliding surface and a limiting part abutting against the connecting piece. When closing the door, the first door hook can move under the action of an external force and slide along the sliding surface, so that the limiting piece rotates relative to the support, and the limiting part moves from the state of abutting against the connecting piece to the state of being separated from the connecting piece. At this time, the connecting piece can rotate relative to the support, so as to pull the first hook-shaped part to move in a first direction to close the door body. Since the connecting piece pulls the first door hook by rotating relative to the support, the movement range of the connecting piece in the first direction can be correspondingly reduced, the area of the support is reduced, and the size and the space occupancy rate of the door lock device are reduced, and the space utilization rate of the cooking utensil is improved.

Description

Technical Field

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

[0002] In related technologies, cooking appliances such as microwave ovens include a door, a housing, and a door lock device connecting the door and the housing; the housing is used to hold food, one side of the door is hinged to one side of the housing, and the door lock device includes a door hook and a bracket, the door hook is located on the other side of the door, the bracket is installed on the other side of the housing, and the bracket is provided with a locking element, when the door is pushed, the door hook engages with the locking element under the action of the pushing force, thereby closing the door.

[0003] However, door lock devices in related technologies occupy a large amount of space. Summary of the Invention

[0004] This application aims to at least solve one of the technical problems existing in the prior art. To this end, one object of this application is to provide a door lock device and cooking appliance that reduces the space occupied by the door lock device.

[0005] An embodiment of the first aspect of this application provides a door lock device, including: a first door hook having a first hook-shaped portion and a first mounting portion for connecting to a door body; a bracket for connecting to a housing; a connector connected to the bracket and for engaging the first hook-shaped portion; a limiting member connected to the bracket, the limiting member having a limiting portion and a sliding surface, the first hook-shaped portion being able to slide along the sliding surface to drive the limiting member to rotate relative to the bracket, thereby causing the limiting portion to abut against the connector and restricting the rotation of the connector relative to the bracket in a first rotation direction, or separating the limiting portion from the connector, the connector being able to rotate relative to the bracket in the first rotation direction and pull the first hook-shaped portion to move in a first direction to close the door body; and when the connector engages the first hook-shaped portion, the sliding surface is located on the side of the first hook-shaped portion away from the connector.

[0006] According to the door lock device of the above embodiment of this application, the connector includes a first arm and a second arm connected to the first arm; a rotating part rotatably connected to the bracket is provided at the connection between the first arm and the second arm; a receiving area for accommodating a first hook-shaped part is provided between the first arm and the second arm; when the first hook-shaped part is located outside the receiving area, the limiting part abuts against the outer side of the second arm away from the first arm; when the first hook-shaped part moves into the receiving area, the limiting part separates from the second arm, and the first arm can hook the first hook-shaped part.

[0007] The door lock device according to the above embodiments of this application further includes: a first driving member connected between the bracket and the second arm, the first driving member being used to drive the connecting member to rotate relative to the bracket in a first rotation direction after the limiting part separates from the connecting member.

[0008] According to the door lock device of the above embodiment of this application, a second driving member is further provided between the bracket and the connector; when the connector rotates along the first rotation direction, the second driving member can move from the first side to the second side of the axis of the rotating part; and when the second driving member is located on the first side of the axis of the rotating part, the second driving member is used to provide torque to the connector in the opposite direction to the first rotation direction; when the second driving member is located on the second side of the axis of the rotating part, the second driving member is used to provide torque to the connector in the first rotation direction.

[0009] According to the door lock device of the above embodiment of this application, a cover is provided on the bracket and is provided on the cover outside the connector. The cover is provided with a first columnar body; a second columnar body is provided on the connector. An arc-shaped hole is provided on the cover and the second columnar body passes through the arc-shaped hole; a second driving member is located on the side of the cover away from the connector and is connected between the first columnar body and the second columnar body.

[0010] According to the door lock device of the above embodiment of this application, the first column is located on the side of the connector away from the sliding surface, and the second column is located between the rotating part and the end of the second arm away from the rotating part.

[0011] According to the door lock device of the above embodiment of this application, the first arm includes an arm body connected to the second arm and a hook portion rotatably connected to the arm body; the first hook portion is used to push the outer side of the hook portion in a first direction under the action of an external force, so that the hook portion rotates relative to the arm body in a second rotation direction, and when the hook portion rotates to a preset angle, the first hook portion is located in the receiving area, and the inner side of the hook portion hooks the first hook portion.

[0012] According to the door lock device of the above embodiment of this application, the arm body has a stop portion that abuts against the outer side of the hook portion, and the stop portion is used to restrict the hook portion from rotating in a direction opposite to the second rotation direction.

[0013] According to the door lock device of the above embodiment of this application, the surface of the limiting member facing the rotating part has a sliding surface. When the limiting part abuts against the connecting member, the limiting part is disposed at one end of the sliding surface along the first direction, and the limiting part protrudes from the sliding surface in the direction facing the rotating part; and the rotation axis of the limiting member is located between the sliding surface and the rotating part.

[0014] According to the door lock device of the above embodiment of this application, the sliding surface includes a first sub-surface and a second sub-surface. When the limiting part abuts against the connector, the first sub-surface extends along a first direction, and the second sub-surface is located at one end of the first sub-surface along the first direction, and the second sub-surface is inclined relative to the first sub-surface. When the first hook-shaped part slides on the second sub-surface along the first direction, the first hook-shaped part pushes the limiting part to rotate relative to the bracket, so as to release the restriction on the connector.

[0015] According to the door lock device of the above embodiment of this application, the first hook-shaped portion includes a first segment extending in a first direction, a second segment for engaging with a connector, and a third segment for sliding along a sliding surface; one end of the first segment is connected to the first mounting portion, and the other end is connected to the second segment and the third segment; the second segment protrudes from the first segment in the direction toward the rotating portion, and the third segment protrudes from the first segment in the direction away from the rotating portion.

[0016] The door lock device according to the above embodiments of this application further includes a buffer member connected between the bracket and the second arm, the buffer member being used to slow down the speed at which the first hook portion moves along the first direction.

[0017] An embodiment of the second aspect of this application provides a cooking appliance, including a door, a housing, and a door lock device as described above; a first mounting portion of a first door hook of the door lock device is connected to the door, and a bracket of the door lock device is connected to the housing.

[0018] The door lock device and cooking appliance provided in this application embodiment are configured with a first door hook, a bracket, and a connector and a limiting member disposed on the bracket. The first door hook has a first hook-shaped portion, and the connector is used to engage the first hook-shaped portion. The limiting member includes a sliding surface and a limiting portion that abuts against the connector. When closing the door, the first door hook can move under the action of an external force and slide along the sliding surface, causing the limiting member to rotate relative to the bracket. This causes the limiting portion to move from a state abutting against the connector to a state separated from the connector. At this time, the connector can rotate relative to the bracket, thereby pulling the first hook-shaped portion to move along a first direction to close the door. Furthermore, since the connector pulls the first door hook by rotating relative to the bracket, the range of motion of the connector along the first direction can be reduced accordingly, thereby reducing the area of ​​the bracket, and thus reducing the size of the door lock device and its space occupancy rate, improving the space utilization rate of the cooking appliance. Attached Figure Description

[0019] In the accompanying drawings, unless otherwise specified, the same reference numerals throughout the various drawings denote the same or similar parts or elements. These drawings are not necessarily drawn to scale. It should be understood that these drawings depict only some embodiments disclosed in this application and should not be construed as limiting the scope of this application.

[0020] Figure 1 A front view of the door lock device in an embodiment of this application is shown;

[0021] Figure 2 for Figure 1 A schematic diagram of the internal structure of the door lock device after removing the cover and the second drive component;

[0022] Figure 3 for Figure 1 A schematic diagram showing the connection of the central support and limiting components;

[0023] Figure 4 for Figure 3 An explosion diagram;

[0024] Figure 5 for Figure 1 A magnified view of a portion of the image;

[0025] Figure 6 for Figure 5 An explosion diagram;

[0026] Figure 7 for Figure 2 Front view of the connecting component;

[0027] Figure 8 for Figure 2 Axonometric view of the connecting component;

[0028] Figure 9 for Figure 1 Schematic diagram of the middle limiting component;

[0029] Figure 10 for Figure 1 A schematic diagram of the structure of the first door hook in the middle;

[0030] Figure 11 This diagram shows the state of the door lock device according to an embodiment of the present application when the first hook-shaped part contacts the engaging part during the closing process;

[0031] Figure 12 This diagram illustrates the state of the door lock device according to an embodiment of the present application during the closing process, where the first hook-shaped part pushes the hooking part to rotate relative to the support arm body;

[0032] Figure 13 This illustration shows a state diagram of the door lock device according to an embodiment of the present application, in which the connecting member pulls the first hook-shaped part to move during the closing process;

[0033] Figure 14 This illustration shows a state diagram of the door lock device according to an embodiment of the present application during the closing process, in which the second drive member moves to the second side of the rotating part;

[0034] Figure 15 This diagram illustrates the state of the door lock device according to an embodiment of this application during the door opening process, where the first hook-shaped part pulls the connecting member to rotate relative to the bracket;

[0035] Figure 16 The diagram shows the state of the door lock device according to an embodiment of this application, in which the first hook-shaped part is separated from the connector during the door opening process.

[0036] Explanation of reference numerals in the attached figures:

[0037] 100: First door hook; 110: First mounting part;

[0038] 120: First hook-shaped part; 121: First segment;

[0039] 122: Second paragraph; 123: Third paragraph;

[0040] 200: Support frame; 210: Cover;

[0041] 211: First columnar body; 212: Arc-shaped opening;

[0042] 220: Ramp; 230: Limiting post;

[0043] 240: Receiving groove; 300: Connector;

[0044] 310: First support arm; 311: Support arm body;

[0045] 312: Hooking part; 313: Stopping part;

[0046] 320: Second arm; 321: Second column;

[0047] 330: Rotating part; 340: Receiving area;

[0048] 400: Limiting component; 410: Limiting part;

[0049] 420: Sliding surface; 421: First sub-surface;

[0050] 422: Second subface; 430: Protrusion;

[0051] 440: Connecting through hole; 500: First driving component;

[0052] 600: Buffer component; 700: Second drive component;

[0053] 800: Second door hook; 810: Second mounting part;

[0054] 820: Second hook-shaped part. Detailed Implementation

[0055] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of this application. Therefore, the drawings and description are considered to be exemplary in nature and not restrictive.

[0056] In related technologies, the door lock device of a cooking appliance includes a door hook installed on the door and a bracket set on the cabinet. The bracket is provided with a horizontally extending groove, and a locking element is provided in the groove. The locking element is used to engage the door hook and slide along the groove to pull the door hook to move and close the door.

[0057] However, due to the long length of the slide rail, the support for the door lock device is also large, resulting in the door lock device occupying a lot of space.

[0058] To address at least one of the aforementioned problems, embodiments of this application provide a door lock device and a cooking device. By providing a connector that can rotate relative to a support, the connector can pull a first door hook to close the door, thereby reducing the lateral dimension of the door lock device and thus reducing the space occupied by the door lock device.

[0059] The embodiments of this application will be described in detail below with reference to the accompanying drawings. Figure 1 A front view of the door lock device in an embodiment of this application is shown; Figure 2 for Figure 1 A schematic diagram of the internal structure of the door lock device after removing the cover and the second drive component; Figure 3 for Figure 1 A schematic diagram showing the connection of the central support and limiting components; Figure 4 for Figure 3 An explosion diagram; Figure 5 for Figure 1 A magnified view of a portion of the image; Figure 6 for Figure 5 An explosion diagram; Figure 7 for Figure 2 Front view of the connecting component; Figure 8 for Figure 2 Axonometric view of the connecting component; Figure 9 for Figure 1 Schematic diagram of the middle limiting component; Figure 2 The straight arrow indicates the first direction, while the curved arrow indicates the first rotation direction. Both the first direction and the first rotation direction can be understood as vector directions. Taking the first direction as an example, a vector direction can be understood as a direction with a directional characteristic, such as... Figure 2 The direction from left to right is the first direction, while the direction from right to left is the opposite direction. The direction in which the connector rotates counterclockwise is the first rotation direction, while the direction in which the connector rotates clockwise is the opposite direction.

[0060] Please refer to Figures 1 to 9 This application provides a door lock device that can be used in structures with a door and a box, especially in cooking appliances such as microwave ovens. The door lock device includes: a first door hook 100, a bracket 200, a connector 300, and a limiting member 400.

[0061] Taking a cooking appliance as an example, the first door hook 100 can be installed on the door of the cooking appliance, and the connector 300, bracket 200, and limiting member 400 can be installed on the cabinet of the cooking appliance. The first door hook 100 includes a first mounting part 110 and a first hook-shaped part 120. The first mounting part 110 is used to connect with the door. The first mounting part 110 can be implemented in various ways. Optionally, the first mounting part 110 may include a mounting hole, and a screw can be threaded into the mounting hole and screwed to the side of the door. Alternatively, the first mounting part 110 may include a boss, and a slot can be provided on the door, allowing the boss to engage in the slot.

[0062] The first hook-shaped part 120 can be connected to the first mounting part 110 by welding, screwing, riveting, or other processes. Alternatively, the two can be integrally formed. The first hook-shaped part 120 can protrude from the door body, so that it can extend into one side of the box body after the door body is closed.

[0063] The bracket 200 can be a thin plate-like structure that can be used to connect to the enclosure. There are several ways to connect the bracket 200 to the enclosure. For example, the bracket 200 can be provided with multiple through holes through which screws can pass and the bracket 200 can be screwed to the enclosure with nuts; or the bracket 200 can also be snapped into the enclosure by means of a snap-fit ​​mechanism.

[0064] The connector 300 is rotatably connected to the bracket 200. The connector 300 may be provided with a rotating part 330, the axis of which can be the axis of rotation of the connector 300 relative to the bracket 200. The rotating part 330 is rotatably connected to the bracket 200, thereby enabling the connector 300 to rotate relative to the bracket 200. It can be understood that the rotating part 330 can be a rotating through-hole, and the bracket 200 may be provided with a protruding rotating shaft. The connector 300 can be sleeved on the rotating shaft through the rotating through-hole, thereby realizing the rotation of the connector 300. Alternatively, the rotating part 330 can be a rotating shaft provided on the connector 300, and the bracket 200 may have a rotating through-hole in which the rotating shaft can be rotatably connected. Furthermore, the connector 300 can be used to engage the first hook-shaped part 120.

[0065] In some embodiments, the connector 300 may include a power component that outputs torque, such as a motor. When the connector 300 engages with the first hook portion 120, the connector 300 may rotate relative to the bracket 200 in a first rotation direction, thereby pulling the first hook portion 120.

[0066] In other embodiments, the door lock device may further include a first drive member 500 connected between the bracket 200 and the connector 300. That is, the first drive member 500 can be a power-providing structure, such as a linear motor, hydraulic cylinder, spring, or elastic rope. The first drive member 500 is connected to the connector 300 to provide a torque to the connector 300 that can drive the connector 300 to rotate in a first rotational direction. After the limiting member 400 separates from the connector 300, the first drive member 500 drives the connector 300 to rotate relative to the bracket 200 in the first rotational direction, so that the connector 300 engages with the first hook-shaped portion 120, thereby pulling the first hook-shaped portion 120 to move in the first direction, and thus closing the door.

[0067] Optionally, the first driving component 500 can be a helical spring, one end of which can be connected to the bracket 200, and the other end of which can be connected to the connector 300, resulting in a simple and easy-to-implement structure. Further optionally, the first driving component 500 can be a tension spring capable of providing tensile force, allowing for more flexible installation of the first driving component 500.

[0068] The limiting member 400 is connected to the bracket 200. The limiting member 400 has a limiting part 410 and a sliding surface 420. It can be understood that when the first door hook 100 moves along the first direction under the action of external force, the first hook-shaped part 120 can slide along the sliding surface 420 to drive the limiting member 400 to rotate relative to the bracket 200. This allows the limiting part 410 to reciprocate between the position abutting against the connector 300 and the position where the limiting part 410 is separated from the connector 300. When the limiting part 410 abuts against the connector 300, the limiting part 410 restricts the rotation of the connector 300 relative to the bracket 200 along the first rotation direction. When the limiting part 410 is separated from the connector 300, the connector 300 can rotate relative to the bracket 200 along the first rotation direction under the action of the first driving member 500. At this time, the connector 300 can engage the first hook-shaped part 120 and pull the first hook-shaped part 120 to move along the first direction to close the door.

[0069] Figure 10 for Figure 1 Please refer to the structural diagram of the first door hook. Figure 10 The first hook-shaped portion 120 includes a first segment 121, a second segment 122, and a third segment 123. The first segment 121 extends along a first direction and is connected at one end to the first mounting portion 110, and at the other end to the second segment 122 and the third segment 123. The second segment 122 may protrude from the first segment 121 in a direction toward the rotating portion 330, and the third segment 123 may protrude from the first segment 121 in a direction away from the rotating portion 330, thereby providing rotatable space for the limiting member 400.

[0070] The first segment 121, the second segment 122, and the third segment 123 can be connected by common processing methods such as welding, riveting, or screwing. Alternatively, the three segments can be manufactured as a single piece using injection molding, casting, powder metallurgy, or other integral molding processes. Optionally, the second segment 122 and the third segment 123 can be strip-shaped structures, with opposite extension directions, and both extension directions are perpendicular to the first direction. The three segments 121, 122, and 123 can roughly form a "T" shape.

[0071] Furthermore, when the connector 300 engages with the first hook-shaped part 120, the sliding surface 420 is located on the side of the first hook-shaped part 120 away from the connector 300. That is, the second segment 122 is used to engage with the connector 300, and the third segment 123 can slide along the sliding surface 420. This allows the first hook-shaped part 120 to engage with the connector 300 at the top perpendicular to the first direction and to slide along the sliding surface 420 at the bottom, thereby enabling the door lock device to close the door and simplifying the structure of the first hook-shaped part 120.

[0072] In some embodiments, the door lock device 200 further includes a buffer 600 connected between the bracket 200 and the connector 300. The buffer 600 is used to slow down the movement speed of the first hook portion 120 along the first direction, thereby reducing the impact between the door and the cabinet and reducing noise. The structure of the buffer 600 can also be varied. For example, the buffer 600 can include an elastic structure such as a coil spring, or the buffer 600 can be a damper structure, such as a linear damper or a rotary damper. The buffer 600 can provide elastic force to resist the movement of the first hook portion 120. It is understood that the power provided by the first drive member 500 can be greater than the resistance of the buffer 600, so that the first hook portion 120 will only slow down its movement speed and will not change its movement direction.

[0073] Optionally, the buffer 600 can be a one-way damper. When the first door hook 100 moves in the first direction, the one-way damper can slow down its movement speed. When the first door hook 100 moves in the opposite direction to the first direction, the one-way damper does not provide damping and will not slow down the movement speed of the first door hook 100. This reduces the collision between the door and the housing when the door is closed and reduces noise. Conversely, when the door is opened, the buffer 600 will not slow down the opening speed of the door, thus improving the user experience.

[0074] The buffer 600 can be connected to the connector 300, thereby slowing down the rotational speed of the connector 300 along the first rotational direction, and thus slowing down the movement speed of the first hook-shaped portion along the first direction. Alternatively, the output end of the buffer 600 can be located on the movement path of the first hook 100, so that when the first hook 100 contacts the buffer 600, it can slow down the movement speed of the first hook 100 along the first direction.

[0075] Taking the first driving member 500 as a tension spring as an example, at the initial stage of the closing process, the limiting part 410 can abut against the connecting member 300 to overcome the elastic force of the first driving member 500, and the connecting member 300 remains stationary relative to the bracket 200. Under the action of external force, the first door hook 100 moves in the first direction, the first hook-shaped part 120 can slide along the sliding surface 420, and can push the limiting member 400 to rotate relative to the bracket 200, and the limiting part 410 also rotates relative to the bracket 200. When the first hook-shaped part 120 engages with the connector 300, the limiting part 410 rotates to separate from the connector 300. At this time, the limiting part 410 does not restrict the rotation of the connector 300. The connector 300 can rotate relative to the bracket 200 in the first rotation direction under the action of the first driving member 500, so that the connector 300 can pull the first door hook 100 to move in the first direction and close the door. When the connector 300 pulls the first door hook 100, the buffer 600 can provide damping to slow down the movement speed of the first door hook 100, thereby reducing the noise of closing the door.

[0076] Understandably, in related technologies, the pulling of the door hook relies on the sliding of the engaging member along the slide groove. The slide groove requires sufficient lateral dimension, resulting in an excessively large lateral dimension of the door lock device. However, in this embodiment, by setting the connecting member 300 that pulls the first door hook 100 to rotate relative to the bracket 200, the range of motion of the connecting member 300 in the first direction (i.e., lateral) can be reduced, thereby reducing the lateral dimension at certain locations of the bracket 200, i.e., reducing the area of ​​the bracket 200, and consequently reducing the size of the door lock device and the space it occupies.

[0077] As an optional implementation of the connector 300, the connector 300 includes a first arm 310 and a second arm 320.

[0078] The first arm 310 and the second arm 320 can be manufactured by an integral processing technology. The first arm 310 and the second arm 320 can extend in different directions. One end of the first arm 310 is connected to one end of the second arm 320. The connection between the first arm 310 and the second arm 320 is provided with a rotating part 330 that is rotatably connected to the bracket 200, so as to realize the rotation of the connector 300 relative to the bracket 200.

[0079] The first arm 310 is mainly used to engage the first hook-shaped part 120, and the second arm 320 is mainly used to connect the first driving member 500 and the buffer member 600, thereby simplifying the structure of the connector 300 and facilitating processing. Optionally, the buffer member 600 and the first driving member 500 can be connected to the end of the second arm 320 away from the rotating part 330.

[0080] There is a receiving area 340 between the first arm 310 and the second arm 320 for accommodating the first hook-shaped portion 120. In addition, when the first hook-shaped portion 120 is located outside the receiving area 340, the limiting portion 410 abuts against the outer side of the second arm 320 away from the first arm 310. When the first hook-shaped portion 120 moves into the receiving area 340, the limiting portion 410 separates from the second arm 320, and the first arm 310 can engage the first hook-shaped portion 120 under the action of the first driving member 500.

[0081] Optionally, refer to Figure 2 The second arm 320 may be longer than the first arm 310. The end of the second arm 320 away from the rotating part 330 may protrude downward from the first arm 310, and the limiting part 410 may abut against the outside of the end, so that the first hook-shaped part 120 can smoothly enter the receiving area 340. The limiting part 410 may also restrict the rotation of the connector 300.

[0082] In some embodiments, the first support arm 310 may include a support arm body 311 and a hook portion 312. The hook portion 312 is rotatably connected to one end of the support arm body 311, and the other end of the support arm body 311 opposite to the hook portion 312 is connected to the second support arm 320. The hook portion 312 is used to hook the first hook-shaped portion 120. As a connection method between the support arm body 311 and the hook portion 312, the support arm body 311 may be integrally provided with a pin, and the hook portion 312 may be provided with a pin hole, into which the pin can be inserted to achieve a rotatable connection between the two.

[0083] Figure 11 This diagram shows the state of the door lock device according to an embodiment of the present application when the first hook-shaped part contacts the engaging part during the closing process; Figure 12 This diagram illustrates the state of the door lock device according to an embodiment of the present application during the closing process, where the first hook-shaped part pushes the hooking part to rotate relative to the support arm body; Figure 13 This illustration shows a state diagram of the door lock device according to an embodiment of the present application, in which the connecting member pulls the first hook-shaped part to move during the closing process; Figure 14 This diagram illustrates the state of the door lock device according to an embodiment of the present application during the closing process, with the second drive member moving to the second side of the rotating part. Figure 11 In the middle, the direction in which the engaging part 312 rotates counterclockwise relative to the support arm body 311 is the second rotation direction. The second rotation direction is the vector direction.

[0084] Please refer to Figures 11 to 14When closing the door, the first hook-shaped part 120 can push the outer side of the hook part 312 along the first direction under the action of external force, so that the hook part 312 rotates relative to the support arm body 311 along the second rotation direction. During this process, the limiting member 400 can always abut against the connecting member 300, that is, the support arm body 311 remains stationary relative to the bracket 200. When the hook part 312 rotates to a preset angle, the first hook-shaped part 120 can be located in the receiving area 340. At this time, the limiting member 400 can release the restriction on the connecting member 300, and the hook part 312 can return to its original position before it rotates relative to the support arm body 311 by gravity, so as to rotate with the support arm body 311 relative to the bracket 200. The inner side of the hook part 312 hooks the first hook-shaped part 120, thereby pulling the first door hook 100 to move along the first direction, thereby closing the door. Because the hook portion 312 can rotate relative to the support arm body 311, the first hook portion 120 can more easily engage with the connector 300, and the structure is simple and easy to implement. The preset angle can be set as needed and is not limited.

[0085] Please refer to Figure 8 The arm body 311 has a stop portion 313 that abuts against the outer side of the hook portion 312. The stop portion 313 is used to restrict the hook portion 312 from rotating in a direction opposite to the second rotation direction.

[0086] Figure 15 This diagram illustrates the state of the door lock device according to an embodiment of this application during the door opening process, where the first hook-shaped part pulls the connecting member to rotate relative to the bracket; Figure 16 The diagram shows the state of the door lock device according to an embodiment of this application, in which the first hook-shaped part is separated from the connector during the door opening process. Figure 15 and Figure 16 In the diagram, the direction of the straight arrow is opposite to the first direction.

[0087] Please refer to Figure 15 and Figure 16 Because the stop part 313 abuts against the outer side, the engaging part 312 can only move relative to the support arm body 311 along... Figure 8 The first hook 120 rotates counterclockwise, not clockwise. Therefore, when the door is opened, the first hook 120 contacts the inner side of the hook 312, and the stop 313 prevents the hook 312 from moving in the opposite direction to the second rotation direction. The hook 312 can remain fixed relative to the support arm body 311. The hook 312 and the support arm body 311 can rotate relative to the bracket 200 simultaneously under the drive of the first door hook 100, thereby preventing the hook 312 from rotating clockwise, improving the efficiency of opening the door, and preventing the first hook 120 from separating from the connector 300 during the closing process, thus improving the reliability of the door lock device.

[0088] Reference Figure 3 , Figure 4 and Figure 9 As an optional embodiment of the limiting member 400, the surface of the limiting member 400 facing the rotating part 330 has a sliding surface 420. When the limiting part 410 abuts against the connecting member 300 (e.g. Figure 2 As shown, the limiting part 410 is provided at one end of the sliding surface 420 along the first direction, and the limiting part 410 protrudes from the sliding surface 420 in the direction toward the rotating part 330, so that the limiting part 410 can abut against the outside of the second arm 320.

[0089] It is understandable that the limiting component 400 can be roughly a strip-shaped structure. Figure 2 In the state shown, the limiting member 400 can extend along the first direction, and the portion of its surface facing the rotating part 330 forms a sliding surface 420. The limiting part 410 can be located at the end of the limiting member along the first direction, and it can also protrude upward from the sliding surface 420, thereby abutting against the second arm 320 to limit the rotation of the connecting member 300 relative to the bracket 200.

[0090] Furthermore, there is a gap between the sliding surface 420 and the hook portion 312, which allows the first segment 121 to move along the first direction so that the second segment 122 can push the hook portion 312. When the second segment 122 separates from the hook portion 312, the third segment 123 can push the limiting member 400 to rotate relative to the bracket, so that the limiting member 410 rotates to separate from the second support arm 320, thereby releasing the restriction on the connecting member 300.

[0091] In some embodiments, the sliding surface 420 may include a first sub-surface 421 and a second sub-surface 422, when the limiting portion 410 abuts against the connector 300 (e.g. Figure 2 As shown), the first sub-surface 421 extends along a first direction, and the second sub-surface 422 is located at one end of the first sub-surface 421 along the first direction, and the second sub-surface 422 is inclined relative to the first sub-surface 421, and... Figure 2 In the state shown, the second sub-face 422 gradually tilts upward along the first direction.

[0092] Reference Figures 11 to 14When the door is closed, when the first hook-shaped part 120 pushes the hook-like part 312 to rotate under the action of external force, the third segment 123 can slide along the first sub-surface 421. Since the extension direction of the first sub-surface 421 is consistent with the movement direction of the first hook-shaped part 120, the limiting member 400 and the second support arm 320 maintain a constant relative position, and the limiting part 410 always abuts against the second support arm 320. When the second segment 122 separates from the hook-like part 312, the first hook-shaped part 120 can slide outwards. Under the action of force, it slides along the first direction on the second sub-surface 422. Since the second sub-surface 422 is an inclined surface, at this time, the third segment 123 pushes the limiting member 400 to rotate relative to the bracket 200. The limiting part 410 rotates clockwise and separates from the second support arm 320, thereby releasing the restriction on the connecting member 300. At this time, the first driving member 500 can pull the connecting member 300 to rotate along the first rotation direction, thereby hooking and pulling the first hook-shaped part 120 to move along the first direction to close the door.

[0093] Reference Figure 15 and Figure 16 When the door is opened, the first sub-face 421 is initially tilted relative to the first direction, and the limiting part 410 is located below the first door hook 100. When the door is pulled, the first hook-shaped part 120 moves in the opposite direction to the first direction, thereby pulling the connecting member 300 to rotate in the opposite direction to the first rotation direction. When the third segment 123 moves to contact the first sub-face 421, the third segment 123 begins to slide along the first sub-face 421, thereby pulling the limiting member 400 to rotate counterclockwise, so that the limiting part 410 returns to a position where it can abut against the second support arm 3. At position 20, but since the second segment 122 has not yet separated from the hook part 312, the second arm 320 can rotate to the rear side of the limiting part 410 along the first direction under the pull of the second segment 122, and there is a gap between the two. When the second segment 122 separates from the hook part 312, the connector 300 rotates along the first rotation direction under the pull of the first drive member 500 until the second arm 320 abuts against the limiting part 410, and then the first hook part 120 continues to move to the third segment 123 and separate from the first sub-surface 421.

[0094] Optionally, the rotation axis of the limiting member 400 is located between the sliding surface 420 and the rotating part 330. For example, the limiting member 400 may be provided with a protrusion 430 protruding from the sliding surface 420 in a direction perpendicular to the first direction, and the bracket 200 may be provided with a receiving groove 240. The protrusion 430 can be received in the receiving groove 240 and can rotate within the receiving groove 240. The part of the limiting member 400 other than the protrusion 430 may be located outside the receiving groove 240. The receiving groove 240 may have a cylindrical shaft, and the protrusion 430 may have a connecting through hole 440. The connecting through hole 440 may be sleeved on the cylindrical shaft to realize the rotation of the limiting member 400 relative to the bracket 200.

[0095] Additionally, refer to Figure 13 The bracket 200 can also be provided with a limiting post 230. The limiting post 230 can be located on the rotation path of the limiting member 400. When the limiting member 400 is pushed and the restriction on the connecting member 300 is released, the limiting member 400 can rotate to contact the limiting post 230, thereby stopping the rotation. The limiting post 230 can be used to control the rotation angle of the limiting member 400 and reduce the rotation path of the limiting member 400.

[0096] It is understood that the sliding surface 420 can be implemented in other ways besides the above-mentioned method. For example, the limiting part 410 can rely on a spring to abut against the connecting member 300, and the sliding surface can be a ramp surface inclined relative to the first direction. When the first door hook 100 slides along the ramp surface, it can overcome the resistance of the spring connecting the limiting member, thereby pushing the limiting part to rotate and releasing the restriction on the connecting member 300. When closing the door, the first door hook 100 can also slide along the ramp surface. Since there is no obstruction from the first door hook 100, the limiting member can return to the position abutting against the connecting member 300 under the action of the spring.

[0097] Please refer to Figure 5 and Figure 6 A second driving element 700 is also provided between the bracket 200 and the connector 300. The second driving element 700 can be a helical spring, with one end connected to the bracket 200 and the other end connected to the connector 300. Since the second driving element 700 is connected between the bracket 200 and the connector 300, when the connector 300 rotates relative to the bracket, the position of the second driving element 700 will also change, moving to both sides of the rotation axis of the connector 300, thereby providing torque in different directions.

[0098] The axis of the rotating part 330 is the axis of rotation of the connecting member 300. When the connecting member 300 rotates in the first rotation direction, the second driving member 700 can move from the first side to the second side of the axis of the rotating part 330, that is, the axis of the second driving member 700 can move between the two sides of the axis of the rotating part 330. (Refer to...) Figure 5 It can be understood that the axis of the rotating part 330 and the rotation center line of the second driving member 700 are shown by the center line in the figure. The plane passing through these two axes is surface A. The first side and the second side are the two sides of surface A, respectively. The second driving member 700 moves from the first side to the second side, which can be understood as the line connecting the two ends of the second driving member 700 moving from the first side to the second side of surface A.

[0099] Reference Figure 12When the first hook-shaped part 120 pushes the hook-engaging part 312, the rotating part 330 does not rotate relative to the bracket 200. At this time, the second driving member 700 can be located on the first side of the axis of the rotating part 330 (the lower left side in the figure). At this time, the second driving member 700 is used to provide torque to the connecting member 300 in the opposite direction to the first rotation direction. When the first hook-shaped part 120 and the hook-engaging part 312 separate, the connecting member 300 is simultaneously subjected to torque provided by the first driving member 500 and the second driving member 700. The direction of the torque provided by the first driving member 500 is the first rotation direction, while the direction of the torque provided by the second driving member 700 is opposite to the first rotation direction.

[0100] It is understandable that the torque provided by the first driving member 500 is greater than the torque provided by the second driving member 700, so that the connecting member 300 can rotate relative to the bracket 200 in the first rotation direction. However, due to the effect of the reverse torque provided by the second driving member 700, the force between the second support arm 320 and the limiting part 410 can be reduced, making it easier for the second support arm 320 to separate from the limiting part 410.

[0101] Reference Figure 13 As the connector 300 continues to rotate relative to the bracket 200 in the first rotation direction, the end of the second drive member 700 connected to the connector 300 will rotate relative to the bracket 200. (Refer to...) Figure 14 When the second drive member 700 rotates to the second side of the axis of the rotating part 330 (the upper right side in the figure), the second drive member 700 is used to provide torque to the connector 300 in the first rotation direction. That is, the torque provided by the first drive member 500 and the second drive member 700 to the connector 300 is in the same direction, which can accelerate the rotation speed of the connector 300 and quickly close the door.

[0102] During the opening process, when the connecting member 300 rotates in a direction opposite to the first rotation direction, the second driving member 700 can move from the second side to the first side of the axis of the rotating part 330, and the direction of the torque it provides changes from the first rotation direction to the opposite direction. At the initial moment of opening, the second driving member 700 is located on the second side of the axis of the rotating part 330, and the first driving member 500 and the second driving member 700 simultaneously provide torque that opposes the rotation of the connecting member 300. Continuing with... Figure 15 and Figure 16When the first hook-shaped part 120 is about to separate from the hook-engaging part 312, the second drive member 700 moves to the first side of the axis of the rotating part 330. The second drive member 700 provides torque that is conducive to opening the door. At this time, the end of the second support arm 320 moves to the rear side of the limiting part 410 along the first direction, with a gap between them. When the first hook-shaped part 120 separates from the hook-engaging part 312, the first drive member 500 pulls the connecting member 300 to rotate along the first rotation direction, so that the limiting part 410 abuts against the end of the second support arm 320. The second drive member 700 provides torque opposite to the first rotation direction in this process, which can reduce the collision between the limiting part 410 and the end of the second support arm 320 and reduce the noise when opening the door.

[0103] In some embodiments, the bracket 200 is provided with a cover 210 that covers the connector 300, and the second drive member 700 is located on the side of the cover 210 away from the connector 300, thereby separating the connector 300 and the second drive member 700 from each other and avoiding interference between their movements.

[0104] The cover 210 is provided with a first columnar body 211; the connector 300 is provided with a second columnar body 321, and the second driving member 700 is connected between the first columnar body 211 and the second columnar body 321, so that the end of the second driving member 700 is connected to the bracket 200 through the cover 210. The cover 210 is provided with an arc-shaped hole 212, and the second columnar body 321 passes through the arc-shaped hole 212. It can be understood that the length of the arc-shaped hole 212 can be greater than the length of the movement trajectory of the second columnar body 321. The arc-shaped hole 212 can provide clearance space for the movement of the second columnar body 321, so that the second driving member 700 can rotate with the connector 300.

[0105] Optionally, the second driving member 700 is a helical spring, which may have hooks at both ends. One hook engages with the first column 211 and the other engages with the second column 321. In order to improve the reliability of the connection of the second driving member 700, the first column 211 and the second column 321 may be provided with slots that engage with the hooks.

[0106] In some embodiments, the first columnar body 211 is located on the side of the connector 300 away from the sliding surface 420, and the second columnar body 321 is located between the rotating part 330 and the end of the second support arm 320 away from the rotating part 330. This structure can enable the second drive member 700 to move between the two sides of the rotating part 330, and can utilize the top space of the connector 300 to avoid interference between the surrounding components and the second drive member 700.

[0107] Continue to refer to Figure 1 and Figure 2In some embodiments, the door lock device further includes a second door hook 800, which includes a second mounting portion 810 for connecting to the door body and a second hook-shaped portion 820 connected to the second mounting portion 810; the bracket 200 is provided with a ramp 220 for sliding the second hook-shaped portion 820.

[0108] The second mounting part 810 can be used to connect with the door body. The connection method between the second mounting part 810 and the door body can refer to the connection method between the first mounting part 110 and the door body. Optionally, the second mounting part 810 can be along... Figure 1 The second mounting part 810 can be slidably mounted on the door body in the up and down direction, or the second mounting part 810 can be configured to rotate relative to the door body, and an elastic element can be provided between the second mounting part 810 and the door body.

[0109] The ramp 220 is inclined relative to the first direction; when the second hook-shaped part 820 moves along the first direction, the second hook-shaped part 820 slides along the ramp 220 and engages with the end face of the ramp 220 along the first direction. Simultaneously providing the first door hook 100 and the second door hook 800 can improve the reliability of the door when it is closed, and this method has a simple structure and is easy to implement.

[0110] Alternatively, the bracket 200 is provided with a limit switch. When the door is closed, the head of the second hook 820 can abut against the limit switch, triggering the limit switch and sending a signal that the door is closed to the controller.

[0111] Understandable, Figure 1 In this embodiment, the first door hook 100 is located at the bottom of the second door hook 800. In other embodiments, the first door hook 100 may be located at the top of the second door hook 800, which can be set according to the actual situation.

[0112] Reference Figure 13 During the closing process, when the first hook-shaped part 120 moves along the first direction under the action of the first driving member 500, the second hook-shaped part 820 can overcome the elastic force of the second elastic member and slide along the ramp 220. After the door is closed, the second hook-shaped part 820 engages with the end face of the ramp 220 along the first direction and contacts the limit switch.

[0113] This application provides a cooking appliance, including a door, a housing, and a door lock device; the first mounting portion 110 of the first door hook 100 of the door lock device is connected to the door, and the bracket 200 of the door lock device is connected to the housing.

[0114] The cooking appliance can be a microwave oven, oven, or similar device. The door can be hinged to the cabinet via a vertical hinge, and the door lock device can be applied to the side of the door and cabinet away from the hinge position. The structure and function of the door lock device are the same as in the above embodiments, and can be referred to the above embodiments for details, which will not be repeated here.

[0115] The cooking appliance provided in this application embodiment includes a first door hook 100, a support 200, and a connector 300 and a limiting member 400 disposed on the support 200. The first door hook 100 has a first hook-shaped portion 120, and the connector 300 is used to engage the first hook-shaped portion 120. The limiting member 400 includes a sliding surface 420 and a limiting portion 410 abutting against the connector 300. When closing the door, the first door hook 100 can move under the action of an external force and slide along the sliding surface 420, so that the limiting member 400 rotates relative to the support 200, causing the limiting portion 410 to move from a state abutting against the connector 300 to a state separated from the connector 300. At this time, the connector 300 can rotate relative to the support 200, thereby pulling the first hook-shaped portion 120 to move in a first direction to close the door. Since the connector 300 pulls the first door hook 100 by rotating relative to the bracket 200, the range of motion of the connector 300 along the first direction can be reduced accordingly, thereby reducing the area of ​​the bracket 200, and thus reducing the size of the door lock device and the space occupancy rate, improving the space utilization rate of the cooking appliance.

[0116] It should be understood that in this specification, the 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 or dimensions based on the orientation or positional relationship or dimensions shown in the accompanying drawings. These terms are used only for ease of description and are not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the scope of protection of this application.

[0117] Furthermore, the terms "first," "second," and "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first," "second," or "third" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0118] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., 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, an electrical connection, or a communication 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. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0119] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0120] This specification provides many different implementations or examples that can be used to implement this application. It should be understood that these different implementations or examples are entirely exemplary and are not intended to limit the scope of protection of this application in any way. Those skilled in the art will be able to conceive of various variations or substitutions based on the disclosure of this specification, and these should all be covered within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope defined in the appended claims.

Claims

1. A door locking device, characterized by comprising: The door lock device comprises: a first door hook having a first hooking part and a first mounting part for connecting with a door body; a bracket for connecting with a cabinet; a connecting member connected to the bracket and used for hooking the first hooking part; a limiting member connected to the bracket, the limiting member having a limiting part and a sliding surface, the first hooking part being capable of sliding along the sliding surface to drive the limiting member to rotate relative to the bracket, so that the limiting part abuts against the connecting member and restricts the connecting member from rotating relative to the bracket in a first rotating direction, or the limiting part is separated from the connecting member, and the connecting member is capable of rotating relative to the bracket in the first rotating direction and pulling the first hooking part to move in a first direction to close the door body; when the connecting member hooks the first hooking part, the sliding surface is located on a side of the first hooking part away from the connecting member; the connecting member comprises a first branch and a second branch connected to the first branch, and a rotating part rotatably connected to the bracket is arranged at a connection position of the first branch and the second branch; the first branch and the second branch have a containing area for containing the first hooking part; when the first hooking part is located outside the containing area, the limiting part abuts against an outer side of the second branch away from the first branch, and when the first hooking part moves into the containing area, the limiting part is separated from the second branch, and the first branch is capable of hooking the first hooking part.

2. The door latch arrangement of claim 1, wherein Further comprising: a first driving member connected between the bracket and the second branch, the first driving member being used for driving the connecting member to rotate relative to the bracket in the first rotating direction after the limiting part is separated from the connecting member.

3. The door lock device according to claim 2, wherein: a second driving member is further arranged between the bracket and the connecting member, the second driving member being capable of moving from a first side to a second side of an axis of the rotating part when the connecting member rotates in the first rotating direction; when the second driving member is located on the first side of the axis of the rotating part, the second driving member is used for providing a torque in a direction opposite to the first rotating direction to the connecting member; when the second driving member is located on the second side of the axis of the rotating part, the second driving member is used for providing a torque in the first rotating direction to the connecting member.

4. The door lock device according to claim 3, wherein: the bracket is provided with a cover body covering outside the connecting member, the cover body being provided with a first columnar body; the connecting member is provided with a second columnar body, the cover body is provided with an arc-shaped hole, and the second columnar body is arranged in the arc-shaped hole; the second driving member is located on a side of the cover body away from the connecting member, and the second driving member is connected between the first columnar body and the second columnar body.

5. The door lock device according to claim 4, wherein: the first columnar body is located on a side of the connecting member away from the sliding surface, and the second columnar body is located between the rotating part and a terminal end of the second branch away from the rotating part.

6. The door lock device according to any one of claims 1-5, wherein the first arm includes an arm body connected with the second arm and a hooking portion rotatably connected with the arm body; the first hooking portion is used to push the outer side surface of the hooking portion in the first direction under the action of an external force, so that the hooking portion rotates relative to the arm body in a second rotation direction, and when the hooking portion rotates to a preset angle, the first hooking portion is located in the accommodating area, and the inner side surface of the hooking portion hooks the first hooking portion.

7. The door latch arrangement of claim 6, wherein the arm body has a stop portion abutting against the outer side surface of the hooking portion, and the stop portion is used to limit the rotation of the hooking portion in a direction opposite to the second rotation direction.

8. The door lock device according to any one of claims 1-5, wherein the surface of the limiting member towards the rotating portion has the sliding surface, when the limiting portion abuts against the connecting member, the limiting portion is arranged at one end of the sliding surface in the first direction, and the limiting portion is arranged protruding from the sliding surface in a direction towards the rotating portion; the rotation axis of the limiting member is located between the sliding surface and the rotating portion.

9. The door lock device according to claim 8, wherein the sliding surface includes a first sub-surface and a second sub-surface, when the limiting portion abuts against the connecting member, the first sub-surface extends in the first direction, the second sub-surface is located at one end of the first sub-surface in the first direction, and the second sub-surface is arranged obliquely relative to the first sub-surface; when the first hooking portion slides on the second sub-surface in the first direction, the first hooking portion pushes the limiting member to rotate relative to the bracket, so as to release the limitation on the connecting member.

10. The door lock device according to any one of claims 1-5, wherein the first hooking portion includes a first segment extending in the first direction, a second segment used to hook with the connecting member, and a third segment used to slide along the sliding surface; one end of the first segment is connected with the first mounting portion, and the other end is connected with the second segment and the third segment; the second segment protrudes from the first segment in a direction towards the rotating portion, and the third segment protrudes from the first segment in a direction away from the rotating portion.

11. The door latch arrangement of any of claims 1-5, wherein, further comprising: a buffer member connected between the bracket and the second arm, and the buffer member is used to slow down the speed of the first hooking portion moving in the first direction.

12. A cooking appliance characterized by, including a door body, a box body, and the door lock device according to any one of claims 1-11; the first mounting portion of the first door hook of the door lock device is connected with the door body, and the bracket of the door lock device is connected with the box body.

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