CN113216776B

CN113216776B - Door lock device and cooking utensil

Info

Publication number: CN113216776B
Application number: CN202110481722.3A
Authority: CN
Inventors: 吴延岐
Original assignee: Midea Group Co Ltd; Guangdong Midea Kitchen Appliances Manufacturing Co Ltd
Current assignee: Midea Group Co Ltd; Guangdong Midea Kitchen Appliances Manufacturing Co Ltd
Priority date: 2021-04-30
Filing date: 2021-04-30
Publication date: 2022-12-09
Anticipated expiration: 2041-04-30
Also published as: CN113216776A

Abstract

The application provides a door lock device and a cooking appliance, and relates to the technical field of household appliances, wherein the door lock device comprises a first door hook, a support, a driving assembly and a buffer piece, wherein the first door hook comprises a first installation part and a first hook-shaped part, the first installation part is used for being connected with a door body, and the first hook-shaped part is connected with the first installation part; the bracket comprises a connecting part used for being connected with the box body; the driving assembly comprises a connecting piece and a driving piece which are connected to the bracket; the connecting piece is used for hooking the first hook-shaped part; the driving piece is connected with the connecting piece so as to drive the connecting piece to rotate relative to the bracket, so that the first hook-shaped part is pulled to move along a first direction, and the door body is closed; the buffer is connected to the bracket and used for slowing down the moving speed of the first hook-shaped part along the first direction. In the door locking device and the cooking utensil that this application provided, the bolster can slow down the moving speed of first hook-like portion along first direction when the door body is closed to alleviate the impact collision between the door body and the box, reduced the noise when closing the door.

Description

Door lock device and cooking utensil

Technical Field

The application relates to the technical field of household appliances, in particular to a door lock device and a cooking appliance.

Background

In the related art, a cooking appliance such as a microwave oven includes a door body and a cabinet; the box is used for holding food, and the door body articulates in one side of box, and the opposite side of the door body is provided with the door hook, and the opposite side of box is provided with the catching groove correspondingly, and when promoting the door body, the door hook colludes in the catching groove under the effect of thrust to close the door body.

However, the noise when the door body is closed in the related art is large.

Disclosure of Invention

The present application is directed to solving at least one of the problems in the prior art. Therefore, an object of the present application is to provide a door lock device and a cooking appliance to reduce noise when a door is closed.

Embodiments of a first aspect of the present application provide a door lock device, comprising: the first door hook comprises a first installation part used for being connected with the door body and a first hook-shaped part connected with the first installation part; the bracket comprises a connecting part used for being connected with the box body; the driving assembly comprises a connecting piece and a driving piece which are connected to the bracket; the connecting piece is used for hooking the first hook-shaped part; the driving piece is connected with the connecting piece so as to drive the connecting piece to rotate relative to the bracket, so that the first hook-shaped part is pulled to move along the first direction, and the door body is closed; and the buffer piece is connected to the bracket and used for slowing down the moving speed of the first hook-shaped part along the first direction.

The door-lock apparatus according to the above embodiment of the present application, wherein the link member includes: the body is rotatably connected to the bracket, and the hooking part is rotatably connected to the body; the driving piece is connected with the body; the first hook-shaped portion is used for pushing the outer side face of the hooking portion along the first direction under the action of external force, so that the hooking portion rotates relative to the body along the first rotating direction, and after the hooking portion rotates to a preset angle, the inner side face of the hooking portion hooks the first hook-shaped portion.

According to the door lock device of the above embodiment of the present application, the body has a stopping portion abutting against the outer side surface of the hooking portion, and the stopping portion is used for limiting the hooking portion to rotate in the direction opposite to the first rotation direction.

According to the door lock device of the above embodiment of the present application, the body includes a first arm and a second arm connected to the first arm; the joint of the first support arm and the second support arm is rotatably arranged on the bracket; the driving piece is connected with the second support arm; the hooking part is arranged at one end of the first support arm, which is far away from the second support arm; and the hooking part, the first support arm and the second support arm enclose an accommodating area for accommodating the first hook-shaped part.

The door lock device according to the above embodiment of the present application further includes: a limiting piece arranged on the bracket; the limiting piece can slide in a reciprocating mode in the direction perpendicular to the support, so that the limiting piece extends into the containing area to limit the connecting piece to rotate relative to the support, or the limiting piece retracts out of the containing area to remove the limitation on the connecting piece.

According to the door lock device of the above embodiment of the present application, the limiting member includes a limiting portion, a guiding portion, and a limiting member body slidably disposed on the bracket; the limiting part and the guide part are both connected to the limiting part body; the guide part is used for converting the movement of the first hook-shaped part along the first direction into the expansion and contraction of the limiting part relative to the accommodating area; when the first hook-shaped part is positioned outside the accommodating area, the limiting part is abutted against the inner side of the first support arm, and when the first hook-shaped part is positioned in the accommodating area, the limiting part is positioned outside the accommodating area.

The door lock device according to the above embodiment of the present application, wherein the guide portion has a guide surface extending in the first direction; the guide surface is used for contacting with the first hook-shaped part; and the distance between the guide surface and the limiting part body is gradually increased along the first direction.

The door-lock apparatus according to the above-described embodiment of the present application, wherein the guide portion further has a holding surface parallel to the first direction, the holding surface being located at one end of the guide surface in the first direction, the holding surface being for contact with the first hook-shaped portion.

According to the door lock device of the above embodiment of the present application, the bracket has a groove, the position limiting member body is slidably disposed in the groove, and an elastic member is disposed between the position limiting member body and the bottom wall of the groove.

According to the door lock device of the above embodiment of the present application, wherein the buffer member includes the rotary damper, the rotary damper has the damper body and the output end capable of rotating relative to the damper body, and the output end has the plurality of first ratchet teeth arranged at intervals in the circumferential direction of the output end; a plurality of second ratchets are arranged on the side surface of the joint of the first support arm and the second support arm and can be clamped between two adjacent first ratchets.

According to the door lock device of the embodiment, the bracket is further provided with a buffer cover, and a cavity is enclosed between the buffer cover and the bracket; the buffer piece comprises a linear damper, and the linear damper is provided with a damper body and an output end which can stretch relative to the damper body along the linear direction; the damper body is rotationally arranged in the cavity, the output end penetrates through the cavity, and the output end is connected with the second support arm. According to the door lock device of the above embodiment of the present application, the door lock device further includes a second door hook, and the second door hook includes a second mounting portion for connecting with the door body and a second hook portion connected with the second mounting portion; the bracket is provided with a matching part for hooking the second hook-shaped part.

The door-lock apparatus according to the above-described embodiment of the present application, wherein the buffer member includes a one-way damper.

According to the door lock device of the above embodiment of the present application, the first mounting portion is further configured to be slidably disposed on the door body along the second direction; wherein the second direction is perpendicular to the first direction.

The door-lock apparatus according to the above-described embodiment of the present application, wherein the fitting portion includes a ramp provided on the bracket; the ramp is obliquely arranged relative to the first direction; when the second hook part moves along the first direction, the second hook part slides along the ramp and is hooked on the end face of the ramp along the first direction.

According to the door lock device of the embodiment of the application, the second mounting part is also arranged on the door body in a sliding way along a second direction perpendicular to the first direction; alternatively, the second mounting portion is also adapted to rotate relative to the door body.

An embodiment of a second aspect of the present application provides a cooking appliance, including a door body, a box body and the door lock device of the above embodiment; the first installation part of the first hook of the door lock device is connected to the door body, and the connection part of the bracket of the door lock device is connected to the box body.

According to the door lock device and the cooking utensil provided by the embodiment of the application, the driving assembly and the buffer piece are arranged on the support, and the driving assembly comprises the connecting piece and the driving piece; the connecting piece can hook the first hook-shaped part of the first door hook; the driving piece is connected with the connecting piece to drive the connecting piece to rotate relative to the support, so that the first hook-shaped portion is pulled to move along the first direction, the door body is further closed, the buffer piece can slow down the moving speed of the first hook-shaped portion along the first direction when the door body is closed, impact collision between the door body and the box body is relieved, and noise generated when the door is closed is reduced.

Drawings

In the drawings, like reference numerals refer to the same or similar parts or elements throughout the several views unless otherwise specified. The figures are not necessarily to scale. It is appreciated that these drawings depict only some embodiments in accordance with the disclosure and are therefore not to be considered limiting of its scope.

FIG. 1 illustrates a front view of a door latch mechanism according to one embodiment of the present application;

FIG. 2 is a schematic view showing an internal structure of the door lock apparatus of FIG. 1;

FIG. 3 illustrates a back view of a door latch mechanism according to an embodiment of the present application;

FIG. 4 is a front view of the connector of FIG. 2;

FIG. 5 is an angled perspective view of the connector of FIG. 2;

FIG. 6 is a perspective view of an alternate angle of the connector of FIG. 2;

fig. 7 is a view illustrating a state in which the first hook is moved into contact with the link during the closing of the door-lock apparatus of fig. 2;

fig. 8 is a view illustrating a state in which the first hook pushes the hook to rotate with respect to the body during the closing of the door latch apparatus of fig. 2;

fig. 9 is a view illustrating a state in which the first hook is moved into the receiving space during the closing of the door-lock apparatus of fig. 2;

fig. 10 is a view illustrating a state where the coupling member is rotated with respect to the bracket to a state where the hooking portion is in contact with the first hook portion during the closing of the door latch apparatus of fig. 2;

fig. 11 is a view illustrating a state in which the first hook is moved by the link during the closing of the door-lock apparatus of fig. 2;

fig. 12 is a view illustrating a state in which the coupling member continues to pull the first hook to move during the closing of the door-lock apparatus of fig. 2;

fig. 13 is a view showing a state in which the door lock device of fig. 2 is closed;

FIG. 14 is an enlarged view of a portion of FIG. 2;

FIG. 15 is an angled perspective view of FIG. 14;

FIG. 16 is a perspective view of the alternate angle of FIG. 14;

FIG. 17 is a partial cross-sectional view of FIG. 2;

FIG. 18 is a schematic structural diagram of the limiting element in FIG. 2;

FIG. 19 is a schematic view of another structure of the position limiting member shown in FIG. 2;

fig. 20 is a view illustrating a state in which the first hook pulls the link to rotate with respect to the bracket during the opening of the door-lock apparatus of fig. 2;

FIG. 21 shows a schematic view of the installation of a door latch mechanism according to another embodiment of the present application;

FIG. 22 shows a schematic view of the internal structure of the door lock device of FIG. 21;

FIG. 23 is a rear view of a door latch mechanism according to another embodiment of the present application;

FIG. 24 is an enlarged view of a portion of FIG. 22;

FIG. 25 is an angled perspective view of FIG. 24;

FIG. 26 is a perspective view of the alternate angle of FIG. 24;

FIG. 27 is a front view of the connector of FIG. 22;

fig. 28 is a view showing a state where the first hook is moved into contact with the link during the closing of the door-lock apparatus of fig. 22;

fig. 29 is a view illustrating a state in which the first hook pushes the hook to rotate with respect to the body during the closing of the door latch of fig. 22;

fig. 30 is a view illustrating a state in which the first hook is moved into the receiving space during the closing of the door latch device of fig. 22;

FIG. 31 is a view showing a state where the coupling member is rotated relative to the bracket to the state where the hooking portion is in contact with the first hooking portion during the closing of the door latch of FIG. 22;

fig. 32 is a view illustrating a state in which the first hook is pulled by the coupling member to move during the closing of the door-lock apparatus of fig. 22;

fig. 33 is a view showing a state in which the door lock device in fig. 22 is closed.

Description of reference numerals:

100: a first door hook; 110: a first mounting portion;

120: a first hook portion; 121: a first recessed region;

200: a support; 210: a connecting portion;

220: a groove; 230: an elastic member;

240: a fitting portion; 241: a ramp;

300: a drive assembly; 310: a connecting member;

311: a body; 3111: a first support arm;

3112: a second support arm; 3113: a stopper portion;

3114: a second ratchet;

312: a hooking part; 320: a drive member;

330: a containment region; 400: a buffer member;

410: a damper body; 420: an output end;

421: a first ratchet;

500: a limiting member; 510: a limiting part;

520: a guide portion; 521: a guide surface;

522: a holding surface; 530: a limiter body;

531: a hook is clamped; 600: a second door hook;

610: a second mounting portion; 620: a second hook portion;

700: a limit switch; 800: a buffer cover;

810: a cavity.

Detailed Description

In the following, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present application. Accordingly, the drawings and description are to be regarded as illustrative in nature, and not as restrictive.

As described above, in the related art, a cooking appliance such as a microwave oven includes a door body and a cabinet; the box is used for holding food, and the door body articulates in one side of box, and the opposite side of the door body is provided with the door hook, and the opposite side of box is provided with the catching groove correspondingly, and when promoting the door body, the door hook colludes in the catching groove under the effect of thrust to close the door body.

However, in order to enable the door hook to be smoothly hooked in the hook groove in the related art, a user needs to apply a certain thrust when closing the door body, and the door body can strike the box body at a certain speed in the process of moving by the thrust, so that the noise between the door body and the box body is large when the door is closed, and the user experience is poor.

In order to solve at least one of the above problems, the embodiment of the present application provides a door lock device and a cooking appliance, in which a first door hook of the door lock device is disposed on a door body, a support of the door lock device is disposed on a box body, and a driving assembly and a buffer member are connected to the support. And in the process that the door body is closed, the buffer piece can slow down the moving speed of the first door hook relative to the support, so that the noise generated when the door is closed is reduced.

The embodiments of the present application will be described in detail below with reference to the accompanying drawings. The embodiment of the application provides a door lock device, and this door lock device can be applied to the device that has the door body and box, especially can be applied to in cooking utensils such as microwave oven, oven. Use microwave oven as an example, microwave oven can have a body and box, is used for holding food in the box, and the body can be through perpendicular hinged joint on the box, and door locking device can use the one side that door body and box deviate from the hinge position.

FIG. 1 illustrates a front view of a door latch mechanism according to an embodiment of the present application; fig. 2 shows a schematic view of the internal structure of the door lock device of fig. 1; fig. 3 shows a back view of a door latch device in an embodiment of the present application. In fig. 2, the cover of the connector and the buffer cover are removed. Referring to fig. 1 to 3, the door-lock apparatus may include: the door comprises a first door hook 100 arranged on the door body and a support 200 arranged on the box body, wherein the support 200 can also be connected with a driving assembly 300 and a buffer piece 400.

The first door hook 100 includes a first mounting portion 110 and a first hook portion 120 connected to the first mounting portion 110. The first mounting portion 110 may be used to connect with a door body, the first mounting portion 110 may be implemented in various ways, and optionally, the first mounting portion 110 may include a mounting hole, and a screw may penetrate through the mounting hole and be screwed to a side surface of the door body; or alternatively, the first mounting portion 110 may include a protrusion, and the door body may be provided with a slot, and the protrusion may be mounted in the slot in a snap-fit manner.

The first hook 120 may be coupled to the first mounting portion 110 by welding, screwing, riveting, or the like, or alternatively, both may be integrally formed. The first hook 120 may include a first portion and a second portion, which may be angled such that there is a first recessed area 121 therebetween, e.g., the first hook 120 in fig. 2 has a downward first recessed area 121, the first recessed area 121 causing the first hook 120 to be generally hook-shaped. The first hook 120 may protrude from the door body, so that the door body may extend into one side of the case body after the door body is closed.

The bracket 200 may be a plate-shaped structure having a low thickness, and may include a connection portion 210, and the connection portion 210 may be used to connect with the case. Alternatively, the connection part 210 may include a plurality of through holes provided on the bracket 200, and screws may be inserted through the through holes and screwed to the case; alternatively, the connecting portion 210 may be engaged with the case by snap-fitting.

The drive assembly 300 may include a connector 310 and a driver 320 connected to the bracket 200. Wherein the connecting member 310 can rotate relative to the stand 200, i.e. the connecting member 310 can rotate relative to the stand 200 around a fixed axis. For example, the connecting member 310 may be provided with a rotation hole, the bracket 200 may be provided with a protruding rotation shaft, and the connecting member 310 may be sleeved outside the rotation shaft through the rotation hole, so as to rotate the connecting member 310. In addition, the connector 310 may be used to hook the first hook 120. In some embodiments, the connection member 310 may have a flange capable of cooperating with the first recess 121 of the first hook 120, such that the connection member 310 may be hooked with the first hook 120 during the closing of the door, and the first hook 120 may be pulled to move in the first direction when the connection member 310 rotates relative to the bracket 200, thereby closing the door. The first direction is the direction from left to right in fig. 2. It is understood that the first direction is only a moving direction of the first door hook 100 relative to the bracket 200 when the door is closed, and the first door hook 100 moves relative to the bracket 200 in a direction opposite to the first direction when the door is opened.

The driving member 320 may be a structure capable of providing power, such as a linear motor, a hydraulic cylinder, a spring, or a resilient cord, etc. The driving member 320 is connected to the connecting member 310 to drive the connecting member 310 to rotate relative to the bracket 200, so as to pull the first hook 120 to move in the first direction, thereby closing the door body. Taking the driving member 320 as a spring as an example, one end of the spring may be connected to the bracket 200, and the other end of the spring may be connected to the connecting member 310, and when the first hook 120 hooks the connecting member 310, the spring may pull the connecting member 310 to rotate, so as to pull the first hook 120 to move along the first direction, and the door body may move toward the door body, thereby closing the door. Wherein the driving member 320 may provide a pulling force or a pushing force. In some alternative embodiments, the driving member 320 may be a tension spring capable of providing tension, so that the installation position of the driving member 320 is more flexible.

A buffer 400 is attached to the bracket 200, and the buffer 400 is used to slow down the moving speed of the first hook 120 in the first direction. Alternatively, the damper 400 may be coupled to the coupling member 310 to slow the rotation speed of the coupling member 310 with respect to the bracket 200, thereby slowing the movement speed of the first hook 120 in the first direction when the door is closed. Or alternatively, the buffer 400 may not be connected to the connection member 310, and may be disposed on a moving path of the first hook 120, and when the first hook 120 is closed in the first direction, the buffer 400 may abut against the first hook 120, thereby generating a resistance force opposite to the first direction and slowing down a moving speed of the first hook 120.

The structure of the buffer member 400 can be various, for example, the buffer member 400 can also include an elastic structure such as a coil spring, which can provide an elastic force to block the movement of the first hook-shaped portion 120, and it can be understood that the driving force provided by the driving member 320 can be greater than the resistance of the buffer member 400, so that the first hook-shaped portion 120 only slows down the movement speed without changing the movement direction.

Optionally, the buffer 400 includes a one-way damper for slowing down the moving speed of the first hook 120 in the first direction. When the first hook 120 moves in a direction opposite to the first direction, the one-way damper does not provide damping, i.e., the one-way damper provides damping only when the door is closed, and does not provide damping when the door is opened, reducing the resistance to opening the door.

In order to protect the buffer member 400 and the connecting member 310, a cover covering the connecting member 310 and a buffer member cover 800 covering the buffer member 400 may be further disposed on the bracket 200.

As an optional implementation manner of the buffer cover 800, a cavity 810 is enclosed between the buffer cover 800 and the bracket 200; the buffer 400 includes a linear damper having a damper body 410 and an output end 420 that can be extended and retracted in a linear direction with respect to the damper body 410; the damper body 410 is rotatably disposed in the cavity 810, the output end 420 is disposed outside the cavity, and the output end 410 is connected to the connecting member 310. The up-down direction in fig. 2 is taken as a second direction, and the second direction is arranged perpendicular to the first direction. The bracket 200 may be provided with a baffle, the baffle and the buffer cover 800 enclose a cavity 810, the size of the cavity 810 in the second direction may gradually decrease in the first direction, and the formed cavity 810 may have an approximately fan-shaped structure. The damper main body 410 can be located in the cavity 810, the output end 420 can penetrate through the cushion cover 800, and the output end 420 can be rotatably connected to the connecting member 310, when the connecting member 310 rotates relative to the bracket 200, the damper main body 410 can swing relative to the bracket 200 in the cavity 810, so that the cushion 400 can be more conveniently installed. Optionally, the bumper 400 is a unidirectional linear damper.

When the door body moves towards the box body under the action of external force, the first hook-shaped part 120 moves along the first direction relative to the support 200, when the door body moves to the position of the connecting piece 310, the first hook-shaped part 120 is hooked with the connecting piece 310, the driving piece 320 pulls the connecting piece 310 to rotate relative to the support 200, the first hook-shaped part 120 is further pulled to continue to move along the first direction, the buffer piece 400 can provide damping, the moving speed of the first hook-shaped part 120 along the first direction is reduced, the speed of the door body impacting the box body is reduced, the impact collision of the door body and the box body is reduced, and the noise when the door is closed is reduced.

Moreover, the door lock device provided by the embodiment has the advantages of simple structure and low cost, and the connecting piece 310 is set to rotate relative to the support 200 but cannot move relative to the support 200 along the first direction, so that the depth of the support 200 along the first direction can be reduced, the door lock device has a smaller structural occupation space, can be suitable for machine types with different volumes, and has strong universality.

In some embodiments, FIG. 4 is a front view of the connector of FIG. 2; FIG. 5 is an angled perspective view of the connector of FIG. 2; FIG. 6 is a perspective view of an alternate angle of the connector of FIG. 2; referring to fig. 4 to 6, the connection member 310 includes: a body 311 rotatably connected to the stand 200, and a hooking portion 312 rotatably connected to the body 311. The driving element 320 is connected to the body 311, the first hook-shaped portion 120 is used for pushing the outer side surface of the hooking portion 312, so that the hooking portion 312 rotates relative to the body 311 along the first rotation direction, and when the hooking portion 312 rotates to a preset angle, the inner side surface of the hooking portion 312 hooks the first hook-shaped portion 120.

The body 311 can be driven by the driving member 320 to rotate relative to the bracket 200, and the structure of the body 311 may be various, for example, the body 311 may be a strip structure, one end of which is rotatably connected to the bracket 200, and the other end of which may be provided with a hook 312. The hook portion 312 can be used to hook the first hook portion 120.

Fig. 7 is a view illustrating a state in which the first hook is moved into contact with the link during the closing of the door-lock apparatus of fig. 2; fig. 8 is a view illustrating a state in which the first hook pushes the hook to rotate with respect to the body during the closing of the door latch apparatus of fig. 2; fig. 9 is a view illustrating a state in which the first hook is moved into the receiving space during the closing of the door-lock apparatus of fig. 2; FIG. 10 is a view showing a state where the coupling member is rotated relative to the bracket to the state where the hooking portion is in contact with the first hooking portion during the closing of the door latch of FIG. 2; fig. 11 is a view illustrating a state in which the first hook is moved by the link during the closing of the door-lock apparatus of fig. 2; fig. 12 is a view illustrating a state in which the coupling member continues to pull the first hook to move during the closing of the door-lock apparatus of fig. 2; fig. 13 is a view showing a state in which the door lock device in fig. 2 is closed. The direction of the arrow in the figure is the first direction, and the counterclockwise direction in the figure is the first rotational direction. Referring to fig. 7 to 13, in the process of closing the door, the first hook-shaped portion 120 moves in the first direction under the action of an external force, when the first hook-shaped portion 120 moves to contact with the hooking portion 312, the position of the body 311 and the bracket 200 remains unchanged, the first hook-shaped portion 120 can continue to move in the first direction to push the outer side surface of the hooking portion 312, at this time, the hooking portion 312 rotates relative to the body 311, the first hook-shaped portion 120 can slide along the outer side surface of the hooking portion 312, and after the hooking portion 312 rotates to a preset angle, the first hook-shaped portion 120 is separated from the outer side surface of the hooking portion 312, the hooking portion 312 can be located in the first recessed area 121 of the first hook-shaped portion 120, the hooking portion 312 is hooked with the first hook-shaped portion 120, at this time, the body 311 can rotate relative to the bracket 200 under the driving of the driving member 320, and the hooking portion 312 can drive the first hook-shaped portion 120 to continue to move in the first direction, so as to close the door body. The hook part 312 can rotate relative to the body 311, so that the first hook part 120 can be easily hooked with the connecting element 310, and the structure is simple and easy to implement.

Further optionally, the body 311 has a stopper 3113 abutting against an outer side surface of the hooking portion 312, and the stopper 3113 is configured to limit the hooking portion 312 to rotate in a direction opposite to the first rotation direction. Referring to fig. 10 and 11, since the stopper 3113 abuts against the outer side surface, the hook 312 can only rotate in the counterclockwise direction in fig. 11 relative to the body 311, but cannot rotate in the clockwise direction. Therefore, when the first hook-shaped portion 120 moves to contact with the inner side surface of the hook-shaped portion 312 (as shown in fig. 10), the hook-shaped portion 312 may be fixed with respect to the body 311, and the hook-shaped portion 312 and the body 311 may rotate with respect to the bracket 200 (as shown in fig. 11) under the driving of the driving member 320, so as to prevent the hook-shaped portion 312 from rotating clockwise, improve the efficiency of closing the door, prevent the first hook-shaped portion 120 from separating from the connecting member 310 during the process of closing the door, and improve the reliability of the door lock device.

As an optional connection mode, a torsion spring may be disposed between the body 311 and the hooking portion 312, a rotating shaft may be disposed on the body 311, and the hooking portion 312 may be rotatably connected to the rotating shaft; and the elastic body of the torsion spring is sleeved outside the rotating shaft, the first torsion arm of the torsion spring is abutted against the body 311, and the second torsion arm of the torsion spring is abutted against the hooking part 312. The torsion spring can keep the hook 312 in a position abutting against the stopper 3113 without external force. Referring to fig. 8 and 9, the torsion spring may also act on when the outer side surface of the hooking portion 312 is separated from the first hooking portion 120, so that the hooking portion 312 rapidly rotates relative to the body 311, that is, the hooking portion 312 may rapidly extend into the first recessed area 121 of the first hooking portion 120, and thus the first hooking portion 120 may smoothly abut against the inner side surface of the hooking portion 312.

In some embodiments, the hooking portion may be configured to rotate relative to the body, and may also be configured to be able to extend and retract relative to the body, for example, an outer side surface of the hooking portion may be disposed to be inclined relative to the vertical direction, so that when the first hook 120 moves along the first direction, the hooking portion may be pushed to retract into the body, and when the hooking portion moves to the top of the first recessed area 121 of the first hook 120, the hooking portion may extend out of the first recessed area 121 under the action of gravity or elasticity, at this time, the first hook 120 may abut against the inner side surface of the hooking portion, and the inner side surface of the hooking portion may be configured to extend vertically, so that the hooking portion cannot extend and retract relative to the body in the process of pulling the first hook 120 by the driving element 320.

It will be appreciated that in other embodiments, the first hook 120 may have a hook body and a movable portion that rotates unidirectionally with respect to the hook body, i.e., the right portion of the first hook 120 in fig. 8 may be configured to rotate in a counterclockwise direction toward the first recessed area 121. The connection member 310 may be a single body, and when the first hook 120 moves in the first direction, the movable portion of the first hook 120 pushes the connection member 310, and the movable portion may rotate in the counterclockwise direction in the reverse direction of the connection member 310, so that the movable portion may be separated from the connection member 310 and the connection member 310 may protrude into the first recess 121. In addition, the movable portion may also be provided in a structure that can rotate in one direction with reference to the hooking portion 312.

With continued reference to fig. 5 and 6, in some embodiments, body 311 includes a first arm 3111 and a second arm 3112 coupled to first arm 3111; the first arm 3111 and the second arm 3112 may be manufactured through an integral process, the first arm 3111 and the second arm 3112 may extend in different directions, and a connection portion of the first arm 3111 and the second arm 3112 may be rotatably disposed on the stand 200. For example, a rotation hole may be formed at a connection portion of the first arm 3111 and the second arm 3112, a protruding rotation shaft may be disposed on the support 200, and the first arm 3111 and the second arm 3112 may be sleeved outside the rotation shaft through the rotation hole, so as to rotate relative to the support 200.

The driving member 320 and the output end 420 of the linear damper may both be connected to the second arm 3112; the hooking portion 312 is disposed at an end of the first arm 3111 opposite to the second arm 3112. The hook 312, the first arm 3111 and the second arm 3112 enclose a receiving area 330 for receiving the first hook 120.

The first arm 3111 can be mainly used for matching with the first hook 120, and the second arm 3112 can be mainly used for connecting the driving member 320 and the buffer member 400, so as to simplify the structure of the connecting member 310 and facilitate the processing.

FIG. 14 is an enlarged view of a portion of FIG. 2; FIG. 15 is a perspective view of one of the angles of FIG. 14; FIG. 16 is a perspective view of the alternate angle of FIG. 14; FIG. 17 is a partial cross-sectional view of FIG. 2; fig. 18 is a schematic structural diagram of the limiting element in fig. 2. Referring to fig. 14 to 18, the door-lock apparatus may further include: a limiting member 500 disposed on the bracket 200; the limiting member 500 can slide back and forth in a direction perpendicular to the bracket 200, so that the limiting member 500 extends into the accommodating area 330 to limit the rotation of the connecting member 310 relative to the bracket 200, or the limiting member 500 retracts out of the accommodating area 330 to release the limitation of the connecting member 310.

The direction perpendicular to the bracket 200 may be a direction perpendicular to the paper surface in fig. 2, and the limiting member 500 can serve to limit the rotation of the connecting member 310 relative to the bracket 200. It can be understood that, in the process of moving the first hook-shaped portion 120 from the state of fig. 7 to the state of fig. 8, the position-limiting member 500 is always located in the accommodating area 330, and optionally, the position-limiting member 500 may always abut against the inner side of the first arm 3111, so as to prevent the driving member 320 from pulling the connecting member 310 to rotate, and when the first hook-shaped portion 120 is just separated from the hooking portion 312 and the first hook-shaped portion 120 is just located in the accommodating area 330, the position-limiting member 500 may move to the outside of the accommodating area 330 (as shown in fig. 9), so that the connecting member 310 may rotate under the driving of the driving member 320 (as shown in fig. 10 to fig. 12), so as to pull the first hook-shaped portion 120 to continue to move in the first direction until the door body is closed (as shown in fig. 13). Referring to fig. 10 to 13, when the connection member 310 rotates, the buffer member 400 may rotate in the cavity 810 and provide damping to slow the rotation speed of the connection member 310, thereby slowing the moving speed of the first hook 120 in the first direction.

Optionally, the driving manner of the limiting member 500 may be various, for example, the limiting member 500 may be moved by a motor, and the limiting member 500 is released from limiting the connecting member 310 when the first hook 120 just moves into the accommodating area 330 by detecting the position information of the first hook 120 and controlling the output of the motor accordingly.

By providing the limiting member 500, the rotation time of the connecting member 310 relative to the bracket 200 can be accurately controlled, the structure of the driving member 320 can be simplified, and the cost can be reduced.

Referring to fig. 18, as an alternative implementation manner of the limiting element 500, the limiting element 500 includes a limiting portion 510, a guiding portion 520, and a limiting element body 530 slidably disposed on the bracket 200; the position-limiting body 530 can move relative to the bracket 200 along a direction perpendicular to the bracket 200, and the position-limiting portion 510 and the guiding portion 520 are both connected to the position-limiting body 530. Alternatively, the stopper portion 510 and the guide portion 520 may be formed by means of an integral molding process. The position-limiting part 510 and the guiding part 520 may be disposed on the position-limiting body 530 in a protruding manner along a direction perpendicular to the bracket 200. The stopper portion 510 is movable relative to the receiving region 330, thereby functioning to restrict the rotation of the connector 310.

The guiding portion 520 is used for converting the movement of the first hook portion 120 along the first direction into the expansion and contraction of the limiting portion 510 relative to the accommodating area 330; when the first hook 120 is located outside the accommodating area 330, the position-limiting part 510 abuts against the inner side of the first arm 3111, and when the first hook 120 is located inside the accommodating area 330, the position-limiting part 510 is located outside the accommodating area 330, so that the movement of the position-limiting part 500 relative to the bracket 200 can be driven by the movement of the first hook 120 along the first direction, and no additional power source is needed, thereby reducing the cost.

As an alternative implementation of the guide 520, the guide 520 may have a guide surface 521 extending in the first direction; the guide surface 521 is for contacting the first hook 120; and the distance between the guiding surface 521 and the position-limiting body 530 gradually increases along the first direction. The guide surface 521 may be a slope surface having an inclined angle with the bracket 200, and the guide surface 521 can convert the movement of the first hook 120 into the expansion and contraction of the stopper 510, and has a simple structure and is easy to process.

Referring to fig. 7, when the first hook 120 moves to push the hook 312 in the first direction by an external force, the right end of the first hook 120 may start to abut against the guide surface 521; referring to fig. 8, in the process that the hooking portion 312 rotates relative to the body 311, the first hook 120 may slide along the guide surface 521, so as to push the stopper body 530 to move inward perpendicular to the paper surface relative to the bracket 200, and the limiting portion 510 moves along with the stopper body 530, so as to move away from the accommodating area 330, and when the first hook 120 is separated from the hooking portion 312, the limiting portion 510 may just move out of the accommodating area 330, so as to release the limiting effect on the connection element 310, referring to fig. 9 and 10, the connection element 310 rotates under the driving of the driving element 320, so that the inner side surface of the hooking portion 312 may quickly hook the first hook 120, so as to drive the first hook 120 to continue to move along the first direction, and at this time, the first hook 120 may continue to slide along the guide surface 521.

Fig. 19 is another schematic structural diagram of the limiting element in fig. 2. Referring to fig. 19, further, the guide 520 further has a holding surface 522 parallel to the first direction, the holding surface 522 is located at one end of the guide 521 in the first direction, and the holding surface 522 is used to contact the first hook 120. The retention surface 522 may be parallel to the plane of the bracket 200. When the position-limiting part 510 moves just outside the accommodating area 330, the driving member 320 may pull the connecting member 310 to rotate, so as to pull the first hook-shaped part 120 to continue to move along the holding surface 522 in the first direction, and since the holding surface 522 is parallel to the first direction, when the first hook-shaped part 120 slides along the holding surface 522, the position-limiting member body 530 and the bracket 200 may be kept relatively fixed, so as to reduce the thickness of the bracket 200.

Referring to fig. 17 and 18, in some embodiments, the bracket 200 has a groove 220, the retainer body 530 is slidably disposed in the groove 220, and the elastic member 230 is disposed between the retainer body 530 and a bottom wall of the groove 220.

The elastic member 230 may provide a pushing force such that after the guiding portion 520 is separated from the first hook 120, the limiting portion 510 may be pushed by the elastic member 230 to extend into the receiving area 330 to limit the rotation of the connection member 310.

Optionally, the bottom wall of the groove 220 may have a sliding hole, one side of the position-limiting member body 530 away from the position-limiting portion 510 is provided with a hook 531, the hook 531 may pass through the sliding hole and be located outside the groove 220, and the hook 531 may abut against the outside of the bottom wall of the groove 220 under the action of the elastic member 230 to prevent the position-limiting member body 530 from disengaging from the groove 220.

Fig. 20 is a view illustrating a state in which the first hook pulls the link to rotate with respect to the bracket during the opening of the door-lock apparatus of fig. 2. The direction of the arrow in the figure is the direction opposite to the first direction. Referring to fig. 20, when the door is opened, the first hook 120 moves in the direction of the arrow against the pulling force of the driving member 320 by an external force, the first hook 120 may sequentially move along the retaining surface 522 and the guide surface 521, and at the same time, the first hook 120 pulls the hooking portion 312, so that the connecting member 310 rotates clockwise relative to the bracket 200, and when the first hook 120 moves along the guide surface 521, the limiting portion 510 may extend into the receiving area 330 in the direction perpendicular to the paper surface and outward along the limiting member body 530 by the elastic member 230. When the first hook 120 moves to a position where the first hook 120 is about to be disengaged from the engaging portion 312 (as shown in fig. 20), the first hook 120 is separated from the guide portion 520, and the limiting portion 510 is located in the accommodating area 330, at this time, a gap may be formed between the first arm 3111 and the limiting portion 510, and after the first hook 120 is separated from the engaging portion 312, the first arm 3111 may rotate counterclockwise under the action of the driving member 320, so that the limiting portion 510 abuts against the inner side of the first arm 3111 again.

Optionally, the buffer 400 may not provide damping during the door closing process, and may not affect the opening speed of the door body.

It is understood that, in other embodiments, the door lock device may not be provided with the position limiter 500, and the driving member 320 may be a linear motor capable of being controlled in a time-division manner, that is, it may not output a displacement during the process that the first hook portion 120 pushes the hooking portion 312 to rotate, and when the first hook portion 120 moves to just separate from the hooking portion 312 along the first direction, the driving member 320 may output a displacement, so as to drive the connecting member 310 to rotate.

On the basis of the above embodiment, referring to fig. 2, the first mounting portion 110 is also configured to be slidably disposed on the door body along the second direction. The door body may be provided with a slide rail, the first mounting portion 110 may be slidably disposed in the slide rail, and optionally, a first elastic member may be disposed between the first mounting portion 110 and the door body, and the first elastic member enables the first door hook 100 to move along the second direction in the process of opening or closing the door body. The first door hook 100 is configured to be capable of sliding along the second direction of the door body, so that the flexibility of the first door hook 100 is improved, and the first hook-shaped portion 120 is more easily hooked with or separated from the connecting member 310.

With continued reference to fig. 1 and 2, in some embodiments, the door-lock apparatus further includes a second door hook 600, the second door hook 600 including a second mounting portion 610 for coupling with the door body and a second hook portion 620 coupled with the second mounting portion 610; the bracket 200 is provided with a fitting part 240 for hooking the second hook 620.

The second mounting portion 610 may be used to be connected to a door body, a connection manner of the second mounting portion 610 and the door body may refer to a connection manner of the first mounting portion 110 and the door body, optionally, the second mounting portion 610 may also be slidably disposed on the door body along a second direction perpendicular to the first direction, and a second elastic member may be disposed between the second mounting portion 610 and the door body. Specifically, reference may be made to an embodiment of the first mounting portion 110, which is not described herein again.

The second hook 620 may be coupled to the second mounting portion 610 by welding, screwing, riveting, or the like, or alternatively, may be integrally formed. The second hook 620 may also include a first portion and a second portion that may be angled such that there is a second recessed area therebetween, e.g., the second hook 620 in fig. 2 has an upwardly directed second recessed area that causes the second hook 620 to be generally hook-shaped. The second hook 620 may protrude from the door body, so that the door body may extend into one side of the case body after the door body is closed.

Alternatively, the second hook 620 may have the same structure as the first hook 120, and may be disposed opposite to the first hook 120, and the engaging portion 240 may have the same structure as the driving assembly 300, so that the first hook 120 and the driving assembly 300 are connected in the same manner as the second hook 620 and the engaging portion 240 are connected.

Or alternatively, referring to fig. 13, the mating portion 240 includes a ramp 241 provided on the bracket 200; the ramp 241 is disposed obliquely to the first direction; when the second hook 620 moves in the first direction, the second hook 620 slides along the ramp 241 and hooks the end surface of the ramp 241 in the first direction. The first door hook 100 and the second door hook 600 are arranged simultaneously, so that the reliability of the door body in closing can be improved, and the mode is simple in structure and easy to realize.

Further optionally, the bracket 200 is provided with a limit switch 700, when the door body is closed, the head of the second hook 620 can abut against the limit switch 700, and the limit switch 700 is triggered, so as to send a signal that the door body is closed to the controller.

It is understood that in fig. 1, the first door hook 100 is located at the bottom of the second door hook 600, and in other embodiments, the first door hook 100 may be located at the top of the second door hook 600, and may be set according to actual situations.

FIG. 21 shows a schematic view of the installation of a door latch mechanism according to another embodiment of the present application; FIG. 22 is a schematic view showing the internal structure of the door lock device of FIG. 21; FIG. 23 shows a back view of a door latch mechanism according to another embodiment of the present application; FIG. 24 is an enlarged view of a portion of FIG. 22; FIG. 25 is an angled perspective view of FIG. 24; FIG. 26 is a perspective view of the alternate angle of FIG. 24; fig. 27 is a front view of the connector of fig. 22. Referring to fig. 21 to 27, in this embodiment, the buffer 400 and the second door hook 600 are improved on the basis of the above embodiments, and the connecting element 310 matched with the buffer 400 is partially improved, and the structures and functions of other components are the same as those of the above embodiments, and reference may be made to the above embodiments, which are not described again.

In this embodiment, the buffer 400 includes a rotary damper, the rotary damper 400 includes a damper body 410 and an output end 420 capable of rotating relative to the damper body 410, the damper body 410 may be mounted on the bracket 200, the output end 420 may have a damper shaft extending into the damper body 410, a viscous liquid may be disposed in the damper body 420, the output end 420 may rotate relative to the damper body 420, and the viscous liquid may be used to provide resistance to the rotation of the damper shaft, so that the output end 420 may output damping.

In order that the damping of the output 420 may be applied to the connection member 310, the output 420 has a plurality of first ratchet teeth 421 spaced in a circumferential direction of the output 420; a side surface of a junction of the first arm 3111 and the second arm 3112 is provided with a plurality of second ratchets 3114, the second ratchets 3114 can be engaged between two adjacent first ratchets 421, and when the connection member 310 rotates relative to the bracket 200 and pulls the first hook 110 to move in the first direction, the rotation damper can apply damping through cooperation between the first ratchets 421 and the second ratchets 3114, slow down the rotation speed of the connection member 310, and thus slow down the moving speed of the first hook 110 in the first direction. Further alternatively, the buffer member 400 may be a unidirectional rotation damper, so that when the first hook 110 moves in a direction opposite to the first direction, the rotation damper may not output damping and the door body may be rapidly opened.

Alternatively, a side surface of a connection portion of the first arm 3111 and the second arm 3112 may be formed with a relief portion near the bracket 200, and the relief portion may prevent the damper body 410 from interfering with the connector 310. The second ratchet 3114 may be disposed at a position away from the bracket 200 on a side surface of the junction. The structure of the other parts of the connecting member 310 is the same as that of the embodiment shown in fig. 2, and reference may be made to the above embodiment.

In order to install the rotary damper, the shape of the bracket 200 of fig. 22 may be modified on the basis of the bracket 200 of fig. 2, thereby reducing the size of the bracket 200 in the first direction and reducing the installation space of the door-lock apparatus.

In addition, in this embodiment, the second mounting portion 610 may be configured to be rotatable with respect to the door body, a second elastic member may be disposed between the second mounting portion 620 and the door body, the second elastic member may enable the second hook-shaped portion 620 to be always pressed against the ramp 241, and after the door body is closed, the second hook-shaped portion 620 may contact the limit switch 700 under a pulling force of the second elastic member.

It is understood that the structure in the present embodiment may be interchanged with the above-described embodiment, for example, the second mounting portion 610 in the present embodiment may also be configured to be slidable in the second direction relative to the door body, and the second mounting portion 610 in the embodiment shown in fig. 2 may also be configured to be rotatable relative to the door body.

Fig. 28 is a view showing a state where the first hook is moved into contact with the link during the closing of the door-lock apparatus of fig. 22; fig. 29 is a view illustrating a state in which the first hook pushes the hook to rotate with respect to the body during the closing of the door latch of fig. 22; fig. 30 is a view illustrating a state in which the first hook is moved into the receiving space during the closing of the door-lock apparatus of fig. 22; FIG. 31 is a view showing a state where the coupling member is rotated relative to the bracket to the state where the hooking portion is in contact with the first hooking portion during the closing of the door latch of FIG. 22; fig. 32 is a view illustrating a state in which the first hook is pulled by the coupling member to move during the closing of the door-lock apparatus of fig. 22; fig. 33 is a view showing a state in which the door lock device in fig. 22 is closed. The direction of the arrow in the figure is the first direction. Referring to fig. 28 to 33, in the process of closing the door, the first hook 120 moves in the first direction under the action of an external force, when the first hook 120 moves to contact with the hook 312, the position of the body 311 and the bracket 200 remains unchanged, the first hook 120 can continue to move in the first direction to push the outer side surface of the hook 312, at this time, the hook 312 rotates relative to the body 311, the first hook 120 can slide along the outer side surface of the hook 312, the first hook 120 can also slide along the guide surface 521, so that the limiting member 500 can slide inward in the direction perpendicular to the paper, and after the hook 312 rotates to a preset angle, the first hook 120 and the outer side surface of the hook 312 separate, the first hook 120 moves into the accommodating area 330, at this time, the limiting portion 510 can move outside the accommodating area 330, the limitation on the connecting member 310 is removed, the body 311 can rotate relative to the bracket 200 under the driving of the driving member 320, the hook 312 engages with the first hook 120, the second hook 3114 can drive the ratchet 421 matching with the first ratchet to drive the ratchet to rotate relative to the body 421, so that the damping member 410 can rotate relative to output the rotational speed of the damping device, and the damping device 410 can continue to output the rotational speed of the damping device, so that the door body 311 can be reduced. In addition, in the process that the driving member 320 drives the first hook-shaped portion 120 to move along the first direction, the second hook-shaped portion 620 can slide along the ramp 241 against the elastic force of the second elastic member, and after the door body is closed, the second hook-shaped portion 620 is clamped on the end surface of the ramp 241 along the first direction and contacts the limit switch 700. The embodiment of the application also provides a cooking appliance, which comprises a door body, a box body and a door lock device; the first mounting portion 110 of the first hook 100 of the door lock device is coupled to the door body, and the connecting portion 210 of the bracket 200 of the door lock device is coupled to the cabinet.

Cooking utensil can be equipment such as microwave oven, and the door body can articulate on the box through vertical hinge, and door lock device can use the one side that door body and box deviate from the hinge position. The structure and function of the door lock device are the same as those of the above embodiments, and specific reference may be made to the above embodiments, which are not described herein again.

In the cooking appliance provided by the embodiment, by providing the door lock device and disposing the driving assembly 300 and the buffer 400 on the bracket 200, the driving assembly 300 includes the connecting member 310 and the driving member 320; the connector 310 can be hooked on the first hooking part 120 of the first door hook 100; the driving member 320 is connected to the connecting member 310 to drive the connecting member 310 to rotate relative to the bracket 200, so as to pull the first hook-shaped portion 120 to move along the first direction, and further close the door body, and the buffer member 400 can slow down the moving speed of the first hook-shaped portion 120 along the first direction when the door body is closed, so that impact collision between the door body and the refrigerator body is reduced, and noise when the door is closed is reduced. And, when cooking utensil is microwave oven, because door locking device need not to set up a large amount of holes on the door body again, it can reduce microwave oven leaky wave's risk when reducing the noise of closing the door, improves microwave oven's security.

It will 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," "circumferential," and the like, indicate an orientation or positional relationship or dimension based on that shown in the drawings, and that such terms are used for convenience of description only and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be considered limiting to the scope of this application.

Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, features defined as "first", "second", and "third" may explicitly or implicitly include one or more of the features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; the connection can be mechanical connection, electrical connection or communication; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as the case may be.

In this application, unless expressly stated or limited otherwise, the recitation of a first feature "on" or "under" a second feature may include the recitation of the first and second features being in direct contact, and may also include the recitation of the first and second features not being in direct contact, but being in contact with another feature between them. Also, the first feature "on," "above" and "over" the second feature may include the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is at a higher level than the second feature. "beneath," "under" and "beneath" a first feature includes the first feature being directly beneath and obliquely beneath the second feature, or simply indicating that the first feature is at a lesser elevation than the second feature.

This description provides many different embodiments or examples that can be used to implement the present application. It should be understood that these various embodiments or examples are purely exemplary and are not intended to limit the scope of the application in any way. Those skilled in the art can conceive of various changes or substitutions based on the disclosure of the specification of the present application, which are intended to be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope defined by the appended claims.

Claims

1. A door lock device, comprising:

the first door hook comprises a first installation part connected with the door body and a first hook-shaped part connected with the first installation part;

the bracket comprises a connecting part used for being connected with the box body;

the driving assembly comprises a connecting piece and a driving piece which are connected to the bracket; the connecting piece is used for hooking the first hook-shaped part; the driving piece is connected with the connecting piece so as to drive the connecting piece to rotate relative to the bracket, so that the first hook-shaped part is pulled to move along a first direction, and the door body is closed;

the connector includes: the body is rotatably connected to the bracket, and the hooking part is rotatably connected to the body;

the driving piece is connected with the body; the first hook-shaped part is used for pushing the outer side face of the hooking part along the first direction under the action of external force so as to enable the hooking part to rotate relative to the body along the first rotating direction, and after the hooking part rotates to a preset angle, the inner side face of the hooking part hooks the first hook-shaped part;

the body comprises a first support arm and a second support arm connected to the first support arm; the joint of the first support arm and the second support arm is rotatably arranged on the bracket;

the driving piece is connected with the second support arm;

the hooking part is arranged at one end of the first support arm, which is far away from the second support arm; the hooking part, the first support arm and the second support arm enclose a containing area for containing the first hook-shaped part;

the buffer piece is connected to the bracket and used for slowing down the moving speed of the first hook-shaped part along the first direction;

the limiting piece is arranged on the bracket;

the limiting piece can slide in a reciprocating mode in the direction perpendicular to the support, so that the limiting piece extends into the containing area to limit the connecting piece to rotate relative to the support, or the limiting piece retracts out of the containing area to remove the limitation on the connecting piece.

2. The door lock device according to claim 1, wherein the body has a stopper portion abutting against an outer side surface of the hooking portion, the stopper portion being configured to restrict rotation of the hooking portion in a direction opposite to the first rotation direction.

3. The door-lock apparatus according to claim 1,

the limiting piece comprises a limiting part, a guide part and a limiting piece body arranged on the support in a sliding manner; the limiting part and the guide part are both connected to the limiting part body;

the guide part is used for converting the movement of the first hook-shaped part along the first direction into the expansion and contraction of the limiting part relative to the accommodating area; when the first hook-shaped part is positioned outside the accommodating area, the limiting part is abutted against the inner side of the first support arm, and when the first hook-shaped part is positioned in the accommodating area, the limiting part is positioned outside the accommodating area.

4. The door-lock apparatus according to claim 3,

the guide portion has a guide surface extending in the first direction; the guide surface is used for contacting with the first hook-shaped part;

and the distance between the guide surface and the limiting piece body is gradually increased along the first direction.

5. The door-lock apparatus according to claim 4,

the guide portion further has a holding surface parallel to the first direction, the holding surface being located at one end of the guide surface in the first direction, the holding surface being for contact with the first hook portion.

6. The door-lock apparatus according to claim 3,

the support has the recess, the locating part body is located in the recess, just be provided with the elastic component between the locating part body with the diapire of recess.

7. The door-lock apparatus according to any one of claims 1 to 6,

the buffer piece comprises a rotary damper, the rotary damper is provided with a damper body and an output end capable of rotating relative to the damper body, and the output end is provided with a plurality of first ratchets arranged at intervals along the circumferential direction of the output end;

the side surface of the joint of the first support arm and the second support arm is provided with a plurality of second ratchets, and the second ratchets can be clamped between two adjacent first ratchets.

8. The door lock device according to any one of claims 1 to 6, wherein a buffer cover is further provided on the bracket, and a cavity is defined between the buffer cover and the bracket;

the buffer piece comprises a linear damper, and the linear damper is provided with a damper body and an output end which can stretch relative to the damper body along a linear direction; the damper body is rotationally arranged in the cavity, the output end penetrates through the cavity, and the output end is connected with the second support arm.

9. The door-lock apparatus according to any one of claims 1 to 6,

the buffer includes a one-way damper.

10. The door lock device according to any one of claims 1 to 6, wherein the first mounting portion is further configured to be slidably provided to the door body in a second direction;

wherein the second direction is perpendicular to the first direction.

11. The door-lock device according to any one of claims 1 to 6, further comprising a second door hook including a second mounting portion for connection with the door body and a second hook portion connected with the second mounting portion;

and the bracket is provided with a matching part for hooking the second hook-shaped part.

12. The door-lock apparatus according to claim 11, wherein the engaging portion includes a ramp provided on the bracket; the ramp is arranged obliquely relative to the first direction; when the second hook part moves along the first direction, the second hook part slides along the ramp and is hooked on the end face of the ramp along the first direction.

13. The door lock device according to claim 11, wherein the second mounting portion is further configured to be slidably provided to the door body in a second direction perpendicular to the first direction;

or, the second mounting part is also used for rotating relative to the door body.

14. A cooking appliance comprising a door body, a cabinet and the door lock device according to any one of claims 1 to 13;

the first installation part of the first door hook of the door lock device is connected to the door body, and the connecting part of the support of the door lock device is connected to the box body.