CN113397403B

CN113397403B - Door lock device and cooking utensil

Info

Publication number: CN113397403B
Application number: CN202110865480.8A
Authority: CN
Inventors: 吴延岐; 位帅帅
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: 2021-07-29
Filing date: 2021-07-29
Publication date: 2022-12-27
Anticipated expiration: 2041-07-29
Also published as: CN113397403A

Abstract

The application provides a door lock device and cooking utensil relates to domestic appliance technical field. The door lock device comprises a first door hook, a bracket, a connecting piece, a driving piece and a rotary damper, wherein the first door hook comprises a first hook-shaped part and a first mounting part connected with a door body; the bracket is connected with the box body; the connecting piece is used for hooking the first hook-shaped part; the driving piece is connected to the bracket and used for driving the connecting piece to rotate relative to the bracket along a first rotating direction, so that the first hook-shaped part is pulled to move along the first direction, and the door body is closed; the rotary damper is connected to the support, and the rotary damper is connected with the connecting piece, and the rotation axis of rotary damper coincides with the rotation axis of connecting piece, and the rotary damper is used for slowing down the rotation speed of connecting piece along first direction of rotation to the first hook-like portion moves the speed along first direction when slowing down to close the door, and then reduces the collision of a body and box, reduces the noise of closing the door of cooking utensil.

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.

An embodiment of a first aspect of the present application provides a door lock device, comprising: the first door hook comprises a first hook-shaped part and a first mounting part used for being connected with the door body; the bracket is used for being connected with the box body; the connecting piece is used for hooking the first hook-shaped part; the driving piece is connected between the bracket and the connecting piece and used for driving the connecting piece to rotate relative to the bracket along a first rotating direction, so that the first hook-shaped part is pulled to move along the first direction, and the door body is closed; and the rotary damper is connected to the bracket, is connected with the connecting piece, has a rotating axis coincident with the rotating axis of the connecting piece, and is used for slowing down the rotating speed of the connecting piece in the first rotating direction.

The door-lock apparatus according to the above-described embodiment of the present application, wherein the rotary damper includes a damper body connected to the bracket and an output shaft rotatably connected to the damper body; and the output shaft is provided with a clamping part, and the connecting piece is provided with a matching part used for clamping with the clamping part.

According to the door lock device of the above embodiment of the present application, the engaging portion includes a plurality of gear teeth provided on the output shaft, the plurality of gear teeth being provided at intervals in a circumferential direction of the output shaft; the cooperation portion is including the mounting hole that is used for wearing to establish the output shaft, and the mounting hole has a plurality of container portions that set up along the circumference interval of output shaft, and every container portion is used for with a teeth of a cogwheel looks block.

The door lock device according to the above embodiment of the present application further includes: a limiting member connected to the bracket; the locating part can move relative to the support under the drive of first hook to make the locating part support and lean on in the connecting piece, thereby the relative support of restriction connecting piece is along the rotation of first direction of rotation, or makes locating part and connecting piece separation, and the connecting piece can be relative support under the drive of driving piece and rotate along first direction of rotation, thereby the first hook-shaped portion of pulling is along first direction removal.

The door lock device according to the above embodiment of the present application, wherein the connecting member includes a first arm for hooking the first hook and a second arm connected to the first arm; the joint of the first support arm and the second support arm is connected with the output shaft; the limiting piece is used for abutting against the outer side of the second support arm, which is far away from the first support arm.

According to the door lock device of the above embodiment of the present application, when the limiting member abuts against the outer side of the second arm, a height difference in a direction perpendicular to the first direction is provided between the end of the first arm departing from the output shaft and the end of the second arm departing from the output shaft, and the height difference is used for allowing the first hook to move from the outer side of the first arm departing from the second arm to a position between the first arm and the second arm in the first direction; and when the limiting piece is separated from the connecting piece, the first supporting arm can rotate along the first rotating direction relative to the support and hook the first hook-shaped part.

According to the door lock device of the above embodiment of the present application, the limiting member can move relative to the bracket along a direction perpendicular to the bracket, and the limiting member has a limiting portion and a guiding portion; the guide part is used for converting the movement of the first hook-shaped part along the first direction into the movement of the limiting part relative to the bracket; when the first hook-shaped part is positioned on the outer side of the first support arm, the limiting part is abutted against the outer side of the second support arm, and when the first hook-shaped part is positioned between the first support arm and the second support arm, the limiting part is separated from the second support arm.

The door-lock apparatus according to the above-described embodiment of the present application, wherein the guide portion has a guide surface provided obliquely with respect to the first direction; the guide surface is used for contacting with the first hook-shaped part; and when the first hook-shaped part is positioned at the outer side of the first support arm, the guide surface protrudes out of the support along the direction vertical to the support, and the distance between the guide surface and the support is gradually increased along the first direction.

According to the door lock device of the above embodiment of the present application, the bracket has a groove for accommodating the limiting member, and an elastic member is disposed between the limiting member and a bottom wall of the groove; a clamping hook is arranged on one side of the limiting part, which is far away from the guide part, and a sliding hole for the clamping hook to penetrate through is formed in the side wall of the groove; and the elastic piece is used for applying elastic force which is propped against the hole wall of the sliding hole to the clamping hook.

According to the door lock device of the above embodiment of the present application, the driving member includes a torsion spring, and the torsion spring includes a spiral body and a first torsion arm and a second torsion arm respectively connected to both ends of the spiral body; the spiral body is sleeved outside the damper body, the first torsion arm is abutted against the support, and the second torsion arm is abutted against the connecting piece.

According to the door lock device of the above embodiment of the present application, the bracket is provided with a first limit post, and the second support arm is provided with a second limit post; the first torsion arm is abutted against the first limiting column, and the second torsion arm is abutted against the second limiting column.

According to the door lock device of the above embodiment of the present application, wherein the bracket is provided with the first switch and the second switch; a first bulge used for triggering the first switch is arranged on the outer side of the second support arm, which is far away from the first support arm, and a second bulge used for triggering the second switch is arranged on the end part of the first hook-shaped part, which is far away from the first mounting part; the first switch and the second switch are used for detecting whether the door body is closed or not.

A second aspect of the embodiments of the present application provides a cooking appliance, including a door body, a box body, and the door lock device as described above; the first installation part of the first door hook of the door lock device is connected to the door body, and the support of the door lock device is connected to the box body.

According to the door lock device and the cooking appliance provided by the embodiment of the application, the door lock device is internally provided with the first door hook, the bracket, the connecting piece, the driving piece and the rotary damper, and the first door hook comprises the first hook-shaped part and the first installation part connected with the door body; the bracket is connected with the box body; the connecting piece is used for hooking the first hook-shaped part; the driving piece is connected to the bracket and used for driving the connecting piece to rotate relative to the bracket along a first rotating direction, so that the first hook-shaped part is pulled to move along the first direction, and the door body is closed; the rotary damper is connected to the support, and the rotary damper is connected with the connecting piece, and the rotation axis of rotary damper coincides with the rotation axis of connecting piece, and the rotary damper is used for slowing down the rotation speed of connecting piece along first direction of rotation, and then slows down the moving speed of first hook along first direction when closing the door to reduce the collision of the door body and box, reduce the noise of closing the door.

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 shows a schematic structural view of a door lock device in an embodiment of the present application;

FIG. 2 is a first perspective view of a door latch mechanism according to an embodiment of the present application;

FIG. 3 shows a second perspective view of the door latch mechanism in an embodiment of the present application;

FIG. 4 is a schematic structural view of the first door hook, the connecting member, the driving member, the rotary damper and the limiting member shown in FIG. 2;

FIG. 5 is a schematic view of the backside structure of FIG. 4;

FIG. 6 is a schematic view of the structure of the connector of FIG. 1;

FIG. 7 is a front view of FIG. 6;

FIG. 8 is a schematic view of the rotary damper of FIG. 1;

fig. 9 is a view showing a state where the first hook moves in the first direction during the closing of the door lock device according to the embodiment of the present application;

fig. 10 is a view showing a state where the first hook is about to enter between the first arm and the second arm during the closing of the door lock device according to the embodiment of the present application;

fig. 11 is a view showing a state where the first hook enters between the first arm and the second arm during the closing of the door lock device according to the embodiment of the present application;

fig. 12 is a view illustrating a state where the first hook is pulled by the link to move in the first direction during the closing of the door lock device in the embodiment of the present application;

fig. 13 is a view illustrating a state where the first hook is pulled by the link to move continuously in the first direction during the closing of the door-lock apparatus according to the embodiment of the present application;

fig. 14 shows a state diagram of the door lock device at the end of the door closing process in the embodiment of the present application.

Description of the reference numerals:

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

120: a first hook portion; 121: a second protrusion;

200: a support; 210: an elastic member;

220: a ramp; 240: a first limit post;

250: a first switch; 260: a second switch;

300: a connecting member; 310: a first support arm;

320: a second support arm; 321: a second limit post;

322: a first protrusion; 330: a fitting portion;

331: mounting holes; 332: an accommodating portion;

400: a drive member; 410: a torsion spring;

412: a first torque arm; 412: a second torque arm;

413: a spiral body; 500: a rotary damper;

510: a damper body; 520: an output shaft;

521: a fastening part; 522: gear teeth;

600: a limiting member; 610: a limiting part;

620: a guide portion; 621: a guide surface;

630: a hook is clamped; 700: a third switch;

800: a second door hook; 810: a second mounting portion;

820: a second hook portion.

Detailed Description

In the following, only certain exemplary embodiments are briefly described. As those skilled in the art would realize, 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, in order to enable the door hook to be smoothly hooked in the hook groove, 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 when moving under the thrust, so that noise between the door body and the box body is large when the door is closed, and user experience is poor.

In order to solve at least one of the above problems, embodiments of the present application provide a door lock device and a cooking appliance, a first door hook in the door lock device is disposed on a door body, a support in the door lock device is disposed on a box body, and a driving part, a connecting part and a rotary damper are connected to the support. And in the process that the door body is closed, the rotary damper can reduce 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. Fig. 1 shows a schematic structural view of a door lock device in an embodiment of the present application; fig. 2 shows a first perspective view of the door lock device in the embodiment of the present application; FIG. 3 shows a second perspective view of the door latch mechanism in an embodiment of the present application; FIG. 4 is a schematic structural view of the first door hook, the connecting member, the driving member, the rotary damper and the limiting member shown in FIG. 2; FIG. 5 is a schematic view of the backside structure of FIG. 4; FIG. 6 is a schematic view of the structure of the connector of FIG. 1; FIG. 7 is a front view of FIG. 6; fig. 8 is a schematic view of the structure of the rotary damper of fig. 1. The direction indicated by the straight line arrow in fig. 1 is a first direction, and the direction indicated by the curved arrow is a first direction of rotation; it will be appreciated that the first direction and the first direction of rotation are both vector directions. By way of example of a first direction, a vector direction is understood to mean a direction with directivity, for example a direction from left to right in fig. 1 is a first direction and a direction from right to left is a direction opposite to the first direction, a direction in which the coupling piece turns counterclockwise is a first direction of rotation and a direction in which the coupling piece turns clockwise is a direction opposite to the first direction of rotation.

Referring to fig. 1 to 8, the present embodiment provides a door lock device, which can be used in a structure having a door body and a cabinet, especially in a cooking appliance such as a microwave oven, and includes: a first door hook 100, a bracket 200, a connector 300, a driver 400, and a rotary damper 500.

Taking the application to a cooking appliance as an example, the first door hook 100 may be mounted on a door body of the cooking appliance, and the connection member 300, the bracket 200, the driving member 400, and the rotary damper 500 may be mounted on a cabinet of the cooking appliance. The first door hook 100 includes a first mounting portion 110 and a first hook portion 120.

The first mounting portion 110 may be used to connect with a door body, and the first mounting portion 110 may be implemented in various ways, optionally, the first mounting portion 110 may include a mounting screw hole, and a screw may be screwed into the mounting screw hole and 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 snap-fitted into the slot.

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 extend substantially perpendicular to the first direction (up-down direction in fig. 1). And the first hook-shaped part 120 may protrude from the door body, so that the door body may extend into one side of the case body after being closed.

The bracket 200 may be a plate-shaped structure having a low thickness, which may be used to connect with the case. The bracket 200 can be connected to the box body in various ways, for example, the bracket 200 is provided with a plurality of through holes, through holes can be penetrated by screws, and the bracket 200 is screwed on the box body through nuts; or, the bracket 200 may be engaged with the case by snap-fitting.

The connecting member 300 may be directly rotatably connected to the stand 200 or may be rotatably connected to the stand 200 through other members. That is, the link 300 can rotate relative to the stand 200 about a fixed axis, which is the rotational axis of the link 300. In addition, the connector 300 may be used to hook the first hook 120.

The driving unit 400 may be connected between the bracket 200 and the connecting unit 300, and the driving unit 400 is configured to drive the connecting unit 300 to rotate in the first rotation direction relative to the bracket 200 after the connecting unit 300 hooks the first hook 120, so that the connecting unit 300 hooks and pulls the first hook 120 to move in the first direction, thereby closing the door body.

The drive 400 may be a structure capable of providing power, such as a linear motor, a hydraulic cylinder, a spring, or a bungee cord, for example. Optionally, the driving member 400 is a coil spring, one end of the coil spring may be connected to the bracket 200, the other end of the coil spring may be connected to the connecting member 300, and when the first hook 120 hooks the connecting member 300, the coil spring may pull the connecting member 300 to rotate, so as to pull the first hook 120 to move along the first direction, and the door body may move toward the box body, so as to close the door.

In some embodiments, the driving member 400 may include a torsion spring 410, the torsion spring 410 including a spiral body 413 and first and

second torsion arms

411 and 412 respectively connected to both ends of the spiral body 413; the spiral body 413 may be coaxially disposed with the rotation axis of the connector 300, the first torsion arm 411 is abutted against the bracket 200, and the second torsion arm 412 is abutted against the connector 300.

It will be appreciated that the drive member 400 may provide either a pulling force or a pushing force. When the driving member 400 is the torsion spring 410, it can provide a pushing force, so that the connecting member 300 can rotate relative to the bracket 200 along the first rotation direction, and the torsion spring 410 has a small volume, so that the installation is more convenient, and the volume of the door lock device can be reduced.

The rotary damper 500 is coupled to the bracket 200, the rotary damper 500 is further coupled to the link 300, and the rotary damper 500 serves to slow down the rotation speed of the link 300 in the first rotation direction, and thus the moving speed of the first hook 120 in the first direction.

And the rotational axis of the rotary damper 500 coincides with the rotational axis of the link 300, so that the installation space of the rotary damper 500 can be reduced, and the volume of the door lock device can be further reduced.

As an alternative implementation of the connector 300 and the rotary damper 500, the rotary damper 500 includes a damper body 510 connected to the bracket 200 and an output shaft 520 rotatably connected to the damper body 510; the damper body 510 may be provided therein with damping fluid, etc., the first end of the output shaft 520 may be provided in the damper body 510, and the second end of the output shaft 520 may extend out of the damper body 510 and be connected with the connecting member 300, thereby rotatably connecting the connecting member 300 to the bracket 200 by rotating the damper 500.

The output shaft 520 and the connector 300 may be connected in various ways, for example, the output shaft 520 and the connector 300 may be connected by screwing or welding.

As an alternative connection manner of the output shaft 520 and the connector 300, the output shaft 520 and the connector 300 may be connected in a clamping manner, for example, a clamping portion 521 is disposed on the output shaft 520, a matching portion 330 for clamping with the clamping portion 521 is disposed on the connector 300, the clamping portion 521 may include a plurality of gear teeth 522 disposed on the output shaft 520, the plurality of gear teeth 522 are disposed at intervals along a circumferential direction of the output shaft 520, and each gear tooth 522 may protrude from a cylindrical side surface of the output shaft 520.

The fitting portion 330 may include a mounting hole 331 for passing through the output shaft 520, and the mounting hole 331 may be a blind hole or a through hole. The mounting hole 331 has a plurality of receiving portions 332 provided at intervals in the circumferential direction of the output shaft 520, each receiving portion 332 being for engagement with one of the gear teeth 522. This structure enables the connecting member 300 to rotate simultaneously with the output shaft 520, and the plurality of gear teeth 522 and the plurality of receiving portions 332 are engaged, so that the force applied therebetween can be more balanced.

Of course, the engaging means between the engaging portion 521 and the matching portion 330 may be various, for example, the engaging portion 521 may include a first hook disposed at the top end of the output shaft 520, the matching portion 330 may include a second hook disposed on the surface of the connecting member 300 facing the bracket 200, and the first hook and the second hook may be engaged and fixedly connected.

Connect through the block can easy to assemble output shaft 520 and connecting piece 300, easy dismounting, when making connecting piece 300 rotatory along first direction of rotation relative support 200, output shaft 520 is rotatory along first direction of rotation relative damper body 510 simultaneously, can provide the damping in the damper body 510, thereby slow down the rotational speed of connecting piece 300 along first direction of rotation, and then slow down the translation rate of first hook 100 along first direction, thereby alleviate the collision of a body and box, noise when reducing to close the door.

As an alternative implementation of the coupling 300 and the rotary damper 500, the coupling 300 may have a convex mounting shaft, the axis of the mounting shaft being the rotational axis of the coupling 300, the mounting shaft may extend into the rotary damper 500, and the rotary damper 500 may resist rotation of the mounting shaft in the first rotational direction.

Alternatively, the connecting member 300 may be directly connected to the bracket 200, and the driving member 400 and the rotation damper 500 may be disposed on a side of the connecting member 30 facing away from the bracket 200.

The driving force provided by the driving member 400 may be greater than the resistance force provided by the rotary damper 500 so that the first hook 120 only slows the movement speed and does not change the movement direction. And when the driving member 400 includes the torsion spring 410, the spiral body 413 of the torsion spring 410 can be sleeved outside the damper body 510, so that the torsion spring 410 is installed by using the rotary damper 500, thereby further reducing the volume of the door lock device.

Optionally, the rotational damper 500 is a one-way damper for slowing down the rotational speed of the connector 300 in the first rotational direction without slowing down its rotational speed in a direction opposite to the first rotational direction. That is, the rotational damper 500 may slow the moving speed of the first hook 120 in the first direction, and when the first hook 120 moves in the direction opposite to the first direction, the one-way damper does not provide damping, that is, 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 the door being opened.

When the door body is moved toward the cabinet by an external force, the first hook 120 moves in a first direction relative to the bracket 200, and when the door body is moved to the position of the connecting member 300, the connecting member 300 can hook the first hook 120. At this time, the driving member 400 pulls the connecting member 300 to rotate along the first rotating direction relative to the bracket 200, and then pulls the first hook-shaped portion 120 to continue to move along the first direction, and the rotary damper 500 can provide damping, and reduce the rotating speed of the connecting member 300 along the first rotating direction, so as to reduce the moving speed of the first hook-shaped portion 120 along the first direction, and reduce the speed at which the door body impacts the box body, reduce the impact collision between the door body and the box body, and further reduce the noise when the door is closed.

Moreover, the door lock device provided by the embodiment has a simple structure and low cost, and because the connecting piece 300 is set to rotate relative to the support 200, but cannot move relative to the support 200 along the first direction, the depth of the support 200 along the first direction can be reduced, so that the door lock device has a smaller occupied space, can be suitable for models with different volumes, and has strong universality.

In some embodiments, the door-lock apparatus further includes: the limiting member 600 is connected to the bracket 200, the limiting member 600 can move relative to the bracket 200 under the driving of the first door hook 100, so that the limiting member 600 abuts against the connecting member 300, thereby limiting the rotation of the connecting member 300 relative to the bracket 200 along the first rotation direction, or separating the limiting member 600 from the connecting member 300, and the connecting member 300 can rotate relative to the bracket 200 along the first rotation direction under the driving of the driving member 400, thereby pulling the first hook-shaped portion 120 to move along the first direction.

For example, the limiting member 600 can rotate relative to the bracket 200, or the limiting member 600 can move relative to the bracket 200 along a direction perpendicular to the bracket 200, where the direction perpendicular to the bracket 200 can be a direction perpendicular to a paper plane in fig. 1.

It is understood that the limiting member 600 may have a state of abutting against the connection member 300 and a state of being separated from the connection member 300. When the first hook 120 moves along the first direction or the direction opposite to the first direction, the first hook 120 can simultaneously drive the limiting member 600 to move relative to the bracket 200, so that the limiting member 600 changes between two states. For example, when the first hook 120 moves to be hooked with the connecting member 300, the limiting member 600 may abut against the connecting member 300 to overcome the driving torque of the driving member 400, so that the connecting member 300 remains relatively stationary and limits the rotation of the connecting member 300 relative to the bracket 200 along the first rotation direction, and when the first hook 120 moves to be hooked with the connecting member 300, the limiting member 600 removes the limitation on the connecting member 300, the driving member 400 drives the connecting member 300 to rotate along the first rotation direction, and the connecting member 300 may contact with the first hook 120 to hook the first hook 120 and pull the first hook to move along the first direction, so as to close the door body.

By providing the limiting member 600, the rotation time of the connecting member 300 relative to the bracket 200 can be accurately controlled, the structure of the driving member 400 can be simplified, and the cost can be reduced. Of course, in other embodiments, the limiting member 600 may not be provided, and a sensor may be provided to detect the position of the first hook 120 and drive the driving member 400 to output the driving torque according to the position.

As an alternative implementation of the connecting member 300, referring to fig. 6 and 7, the connecting member 300 includes a first arm 310 for hooking the first hook 120 and a second arm 320 connected to the first arm 310; the first arm 310 and the second arm 320 can be manufactured by an integrated processing technology, the first arm 310 can be located on one side of the second arm 320 close to the door body, one end of the first arm 310 is connected with one end of the second arm 320, and the connection position of the first arm 310 and the second arm 320 is connected with the output shaft 520, that is, the connection position of the first arm 310 and the second arm 320 is provided with a mounting hole 331, and the output shaft 520 can be clamped and connected in the mounting hole 331.

The first arm 310 may be mainly used for hooking the first hook 120, and the position-limiting element 600 is used for abutting against the outer side of the second arm 320 away from the first arm 310, so as to distribute the function of the connecting element 300 to the first arm 310 and the second arm 320, thereby simplifying the structure of the connecting element 300 and facilitating the processing.

In addition, the second support arm 320 can also be used for mounting a torsion spring 410, the bracket 200 can be provided with a first limiting column 240, and the second support arm 320 is provided with a second limiting column 321; the first torsion arm 411 abuts against the first position-limiting pillar 240, and the second torsion arm 412 abuts against the second position-limiting pillar 321.

It can be understood that the second position-limiting pillar 321 can be located on one side of the first position-limiting pillar 240 departing from the door body all the time, the spiral body 413 of the torsion spring 410 can be sleeved outside the damper body 510, the first torsion arm 411 and the second torsion arm 412 of the torsion spring 410 can be located between the first position-limiting pillar 240 and the second position-limiting pillar 321, the first torsion arm 411 can be abutted against the first position-limiting pillar 240, and the second torsion arm 412 can be abutted against the second position-limiting pillar 321. In addition, in the state of the torsion spring 410 without external force, the distance between the first torsion arm 411 and the second torsion arm 412 may be greater than the distance between the first limiting post 240 and the second limiting post 321, so that the first torsion arm 411 and the second torsion arm 412 may be subjected to compression deformation to abut against between the first limiting post 240 and the second limiting post 321, and the connecting member 300 has a tendency to rotate along the first rotation direction. The limiting member 600 can abut against the second arm 320, so as to overcome the driving torque of the torsion spring 410, and the connecting member 300 can maintain a stationary state relative to the bracket 200. The first and second limiting

columns

240 and 321 are simple in structure and easy to process.

As an alternative embodiment of the second limiting column 321 and the second support arm 320, the second support arm 320 is provided with a connecting through hole, the second limiting column 321 can be connected in the connecting through hole in an interference fit manner, and the second limiting column 321 can extend out of the connecting through hole in a direction close to the support 200. That is, the second torque arm 412 may be located between the second arm 320 and the supporting frame 200, so that the driving member 400 may be installed using the space between the supporting frame 200 and the connecting member 300, thereby improving the space utilization of the door lock device.

In some embodiments, referring to fig. 1, when the limiting member 600 abuts against the outer side of the second arm 320, a height difference between the end of the first arm 310 away from the output shaft 520 and the end of the second arm 320 away from the output shaft 520 in the first direction is provided, taking a plane passing through the rotation axis of the connecting member 300 and parallel to the first direction as a reference plane, a distance from the end of the first arm 310 to the reference plane is D1, a distance from the end of the second arm 320 to the reference plane is D2, D1 may be smaller than D2, and a difference between D2 and D1 is the height difference, the height difference being used to allow the first hook 120 to move from the outer side of the first arm 310 away from the second arm 320 to between the first arm 310 and the second arm 320 in the first direction, that is, during the process that the first hook 120 moves between the first arm 310 and the second arm 320 in the first direction, a top end of the first hook 120 may not contact with the first arm 310, or may not just contact with the first arm 310, and the first hook 120 may smoothly enter the first arm 320. In this process, the position-limiting member 600 can always abut against the second arm 320, so that the connecting member 300 can be kept stationary relative to the stand 200.

When the limiting member 600 is driven by the first hook-shaped portion 120 to be separated from the connecting member 300, the first arm 310 can rotate in the first rotation direction relative to the bracket 200 under the driving of the driving member 400, so that the first arm 310 can hook the first hook-shaped portion 120 and pull the first door hook 100 to move in the first direction, thereby closing the door body.

It is understood that, referring to fig. 1, the length of the first arm 310 may be greater than the length of the second arm 320, i.e., the distance from the end of the first arm 310 to the rotation axis of the connecting member 300 may be greater than the distance from the end of the second arm 320 to the rotation axis of the connecting member 300. When the position limiting element 600 abuts against the connecting element 300, the position of the connecting element 300 at this moment can be adjusted, so that the first arm 310 and the second arm 320 can be inclined with respect to the vertical direction in fig. 1, and a height difference can exist between the first arm 310 and the second arm 320. When the limiting member 600 is separated from the connecting member 300, the connecting member 300 is driven by the torsion spring 410 to rotate in the first rotation direction, and the height difference gradually decreases, so that the first arm 310 can move from the top of the connecting member 300 to the left side of the first hook 120, and the connecting member 300 can hook the first hook 120 by rotating continuously, and pull the first hook 120 to achieve the door closing operation.

By setting the position relationship between the first arm 310 and the second arm 320, the first arm 310 can not prevent the first hook 120 from entering between the first arm 310 and the second arm 320, the first arm 310 can hook the first hook 120 and pull the first hook 120, and the structure of the connecting member 300 can be simplified.

In some embodiments, the limiting member 600 can move relative to the bracket 200 along a direction perpendicular to the bracket 200, and the limiting member 600 has a limiting portion 610 and a guiding portion 620.

The guide part 620 is used for converting the movement of the first hook part 120 along the first direction into the movement of the limiting part 610 relative to the bracket 200; when the first hook 120 is located on the outer side of the first arm 310 away from the second arm 320, the position-limiting portion 610 abuts against the outer side of the second arm 320, and when the first hook 120 is located between the first arm 310 and the second arm 320, the position-limiting portion 610 is separated from the second arm 320.

The direction perpendicular to the bracket 200 may be a direction perpendicular to the paper surface in fig. 1, and the limiting member 600 can play a role in limiting the connecting member 300 from rotating in the first rotation direction relative to the bracket 200.

It can be understood that the guiding portion 620 may contact the first hook portion 120 and move relative to the bracket 200 under the driving of the first hook portion 120, so as to drive the limiting portion 610 to move relative to the second arm 320, and when the first hook portion 120 is located at the outer side of the first arm 310, the limiting portion 610 abuts against the outer side of the second arm 320, and when the first hook portion 120 moves to be located between the first arm 310 and the second arm 320, the limiting portion 610 is separated from the second arm 320, so that the movement of the limiting member 600 relative to the bracket 200 may be driven by the movement of the first hook portion 120 along the first direction, without providing an additional power source, and the cost may be reduced.

Alternatively, the stopper portion 610 and the guide portion 620 may be formed as an integral structure by means of an integral molding process.

As an alternative implementation of the guide part 620, the guide part 620 may have a guide surface 621 disposed obliquely with respect to the first direction; the guide surface 621 may be a flat surface or a curved surface having a curvature. And when the first hook 120 is located outside the first arm 310, the guide surface 621 protrudes from the bracket 200 in a direction perpendicular to the bracket 200, and a distance between the guide surface 621 and the bracket 200 gradually increases in the first direction. The guide surface 621 may be used to contact the first hook 120, convert the movement of the first hook 120 into the movement of the stopper 610 in the direction perpendicular to the bracket 200, and has a simple structure and easy processing.

In some embodiments, the bracket 200 has a recess for receiving the retainer 600, and the recess may have a sidewall and a bottom wall connected to the sidewall. The limiting member 600 may be located in the groove, and an elastic member 210 is disposed between the limiting member 600 and the bottom wall of the groove; a clamping hook 630 is arranged on one side of the limiting piece 600 departing from the guide part 620, and a sliding hole for penetrating the clamping hook 630 is arranged on the side wall of the groove; and the elastic member 210 is used to apply an elastic force to the hook 630 against the hole wall of the sliding hole.

Alternatively, the limiting member 600 may have a shell-shaped structure, which may have a top plate disposed obliquely and a side plate connected to the top plate, the top plate may form the guiding portion 620, a surface of the top plate may form the guiding surface 621, and the side plate may have a protruding portion protruding toward the output shaft, and the protruding portion may abut against an outer side surface of the second arm 320, so as to limit the rotation of the connecting member 300 in the first rotation direction. In addition, a part of the side plate may be located in the groove, the hook 630 may be disposed at a position of the side plate away from the top plate, the sliding hole may be disposed on a side wall of the groove and extend in a direction perpendicular to the bracket 200, and the hook 630 may extend out of the sliding hole in a direction perpendicular to the side wall. The hook 630 may have a certain elastic force such that the hook 630 can be mounted to the sliding hole by an external force and cannot be freely released from the sliding hole when the hook 630 moves along the sliding hole.

The elastic member 210 may be a structure having a certain elasticity, such as a coil spring or an elastic block, which can provide an elastic force, so that the hook 630 abuts against the hole wall of the sliding hole, for example, a position of one end of the hole wall of the sliding hole in a direction perpendicular to the bracket 200.

In addition, the number of the hooks 630 may be multiple, for example, the limiting member 600 may be provided with two hooks 630, and the two hooks 630 may be respectively located at two sides of the limiting member 600, so that the first hook 120 moves along the guide surface 621 more stably. The number of the sliding holes may be the same as the number of the hooks 630 so that one hook 630 may penetrate one sliding hole.

Optionally, the side plate of the limiting member 600 may further be provided with a guide post, the side wall of the groove has a guide slot for accommodating the guide post, and the slot body of the guide slot may extend in a direction perpendicular to the bracket 200. The guide post can be attached to the guide groove 223 to move, and the movement stability is further improved.

Fig. 9 is a view showing a state where the first hook moves in the first direction during the closing of the door lock device according to the embodiment of the present application; referring to fig. 9, the first hook 120 moves along the first direction under the action of an external force, the first hook 120 is located outside the first arm 310, the limiting portion 610 of the limiting member 600 abuts against the second arm 320 of the connecting member 300, so that the connecting member 300 is limited from rotating relative to the bracket 200, and the connecting member 300 remains stationary.

Fig. 10 is a view showing a state where the first hook is about to enter between the first arm and the second arm during the closing of the door lock device according to the embodiment of the present application; referring to fig. 10, the first hook 120 moves in the first direction and passes the first arm 310, and the first arm 310 is located on top of the first hook 120 and does not interfere with the movement of the first hook 120 in the first direction. The limiting portion 610 abuts against the second arm 320, so as to limit the rotation of the connecting element 300 relative to the bracket 200, and the connecting element 300 also remains stationary.

Fig. 11 is a view showing a state where the first hook enters between the first arm and the second arm during the closing of the door lock device according to the embodiment of the present application; referring to fig. 11, the first hook 120 moves along the first direction to a position between the first arm 310 and the second arm 320, and the first arm 310 is located at the top of the left side of the first hook 120. And the stopper portion 610 is in a state of being just separated from the second arm 320.

Fig. 12 is a view illustrating a state where the first hook is pulled by the link to move in the first direction during the closing of the door-lock apparatus according to the embodiment of the present application; referring to fig. 12, the position-limiting portion 610 and the second arm 320 are separated from each other, the torsion spring 410 drives the connecting member 300 to rotate along the first rotating direction, the first arm 310 rotates to hook the first hook 120, and the first hook 120 is pulled to move along the first direction. At this time, the rotary damper 500 provides damping to slow down the rotation speed of the connecting member 300, and further, to slow down the moving speed of the first door hook 100 along the first direction, so as to reduce the collision between the door body and the cabinet, and reduce the noise of closing the door.

Fig. 13 is a view illustrating a state where the first hook is pulled by the link to move continuously in the first direction during the closing of the door-lock apparatus according to the embodiment of the present application; referring to fig. 13, the torsion spring 410 drives the connection member 300 to rotate continuously in the first rotation direction, and the first arm 310 pulls the first hook 120 to move continuously in the first direction.

Fig. 14 shows a state diagram of the door lock device at the end of the door closing process in the embodiment of the present application. Referring to fig. 14, a first switch 250 and a second switch 260 are disposed on the bracket 200; the first switch 250 and the second switch 260 are used for detecting whether the door body is closed. The first switch 250 may be located on a side of the connecting member 300 away from the door body, and the second switch 260 may be located on a side of the limiting member 600 away from the door body. The first and

second switches

250 and 260 may be conventional switch structures that may have contacts that, when pressed, may signal a controller. In this embodiment, when the contact is pressed, a door closing signal can be sent to the controller.

The outer side of the second arm 320, which is far away from the first arm 310, is provided with a first protrusion 322 for triggering the first switch 250, and the end of the first hook-shaped part 120, which is far away from the first mounting part 110, is provided with a second protrusion 121 for triggering the second switch 260; in fig. 14, when the door is closed, the first protrusion 322 may press the contact of the first switch 250, and the second protrusion 121 may press the contact of the second switch 260.

It is understood that the first switch 250 and the second switch 260 may be used for different functions, for example, the first switch 250 may be used to control whether the cooking appliance is operated, and the second switch 260 may be used to control whether the indicator lamp is turned on. The cooking appliance can be conveniently controlled by arranging the first switch 250 and the second switch 260, and the control difficulty is simplified.

It is to be understood that fig. 9-14 do not show the exact positions of first and

second torque arms

411, 412, but only the positions of first and

second torque arms

411, 412 of torsion spring 410 without any external force. And the direction of the arrow in the figure is the first direction.

When the door is opened, the first door hook 100 may move in a direction opposite to the first direction under the action of an external force, so as to overcome the driving torque of the torsion spring 410, pull the connecting member 300 to rotate in a direction opposite to the first rotation direction, and the first hook 120 may slide along the guide surface 621, so that the limiting portion 610 starts to move in a direction perpendicular to the paper surface, when the first arm 310 rotates to be located above the first hook 120 from the left side of the first hook 120 following the connecting member 300, it cannot hook the first hook 120, and the first hook 120 may continue to move to the outside of the connecting member 300, thereby implementing the door opening process. When or before the first arm 310 rotates to be located above the first hook 120, the limiting portion 610 has moved to a position abutting against the outer side of the second arm 320, so as to overcome the driving torque of the torsion spring 410 and limit the connecting member 300 from rotating in the first rotating direction to return to the position shown in fig. 1. The specific states of the components of the process may be referenced to a state diagram moving sequentially from fig. 14 to fig. 9.

In some embodiments, the door-lock apparatus further includes a second door hook 800, the second door hook 800 including a second mounting portion 810 for coupling with the door body and a second hook portion 820 coupled with the second mounting portion 810; the bracket 200 is provided with a ramp 220 for hooking the second hook 820.

The second mounting portion 810 may be used to be connected to a door body, a connection manner of the second mounting portion 810 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 810 may be slidably disposed on the door body along an up-down direction in fig. 1, or the second mounting portion 810 may be configured to be rotatable with respect to the door body, and a second elastic member may be disposed between the second mounting portion 810 and the door body.

Referring to fig. 11, the ramp 220 is disposed obliquely relative to the first direction; when the second hook 820 moves in the first direction, the second hook 820 slides along the ramp 220 and hooks the end surface of the ramp 220 in the first direction. The first door hook 100 and the second door hook 800 are arranged at the same time, so that the reliability of the door body in closing can be improved, and the mode is simple in structure and easy to realize.

Referring to fig. 14, further alternatively, the bracket 200 is provided with a third switch 700, when the door body is closed, the head of the second hook 820 may abut against the third switch 700, and the third switch 700 is triggered, so as to send a signal that the door body is closed to the controller. The third switch 700 has the same structure and function as the first switch 250 and the second switch 260, and reference may be made to the first switch 250 and the second switch 260.

It is understood that in fig. 1, the first door hook 100 is located at the bottom of the second door hook 800, and in other embodiments, the first door hook 100 may be located at the top of the second door hook 800, and may be set according to actual situations.

The embodiment 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 bracket 200 of the door lock device is coupled to the cabinet.

The 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 in 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 present embodiment, by providing the first door hook 100, the bracket 200, the connector 300, the driver 400 and the rotary damper 500 in the door lock device, the first door hook 100 includes the first hook portion 120 and the first mounting portion 110 connected to the door body; the bracket 200 is connected with the box body; the connector 300 is used for hooking the first hook-shaped part 120; the driving member 400 is connected to the bracket 200 and is used for driving the connecting member 300 to rotate relative to the bracket 200 along a first rotation direction, so as to pull the first hook-shaped portion 120 to move along the first direction, and further close the door body; the rotary damper 500 is connected to the bracket 200, the rotary damper 500 is connected to the connecting member 300, and the rotation axis of the rotary damper 500 coincides with the rotation axis of the connecting member 300, and the rotary damper 500 is used for slowing down the rotation speed of the connecting member 300 along the first rotation direction, and further slowing down the moving speed of the first hook-shaped portion 120 along the first direction when the door is closed, so that the collision between the door body and the cabinet body is reduced, and the door closing noise is reduced.

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 implicit to a number of indicated technical features. 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 appropriate.

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 protection of the present 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 hook-shaped part and a first mounting part used for being connected with the door body;

the bracket is used for being connected with the box body;

the connecting piece is used for hooking the first hook-shaped part;

the driving piece is connected between the bracket and the connecting piece and is used for driving the connecting piece to rotate relative to the bracket along a first rotating direction, so that the first hook-shaped part is pulled to move along the first direction, and the door body is closed;

the rotary damper is connected to the support, connected to the connecting piece, and the rotation axis of the rotary damper coincides with the rotation axis of the connecting piece, and the rotary damper is used for slowing down the rotation speed of the connecting piece along the first rotation direction.

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

the rotary damper comprises a damper body connected to the bracket and an output shaft rotatably connected to the damper body; and the output shaft is provided with a clamping part, and the connecting piece is provided with a matching part used for clamping with the clamping part.

3. The door-lock apparatus according to claim 2,

the clamping part comprises a plurality of gear teeth arranged on the output shaft, and the gear teeth are arranged at intervals along the circumferential direction of the output shaft;

the matching portion comprises a mounting hole used for penetrating the output shaft, the mounting hole is provided with a plurality of accommodating portions arranged at intervals along the circumferential direction of the output shaft, and each accommodating portion is used for being clamped with one gear tooth.

4. The door-lock apparatus according to claim 2 or 3, further comprising: a limiting member connected to the bracket;

the limiting part can move relative to the bracket under the driving of the first door hook, so that the limiting part abuts against the connecting part, the rotation of the connecting part relative to the bracket along the first rotating direction is limited, or the limiting part is separated from the connecting part, the connecting part can rotate relative to the bracket along the first rotating direction under the driving of the driving part, and the first hook-shaped part is pulled to move along the first direction.

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

the connecting piece comprises a first support arm used for hooking the first hook-shaped part and a second support arm connected to the first support arm; the joint of the first support arm and the second support arm is connected with the output shaft;

the limiting piece is used for abutting against the outer side of the second support arm, which deviates from the first support arm.

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

when the limiting piece abuts against the outer side of the second support arm, a height difference perpendicular to the first direction is formed between the end, away from the output shaft, of the first support arm and the end, away from the output shaft, of the second support arm, and the height difference is used for allowing the first hook to move from the outer side, away from the second support arm, of the first support arm to a position between the first support arm and the second support arm along the first direction;

and when the limiting piece is separated from the connecting piece, the first supporting arm can rotate along the first rotating direction relative to the support and hook the first hook-shaped part.

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

the limiting piece can move relative to the bracket along the direction vertical to the bracket, and the limiting piece is provided with a limiting part and a guiding part;

the guide part is used for converting the movement of the first hook part along the first direction into the movement of the limiting part relative to the bracket; when the first hook-shaped part is positioned on the outer side of the first support arm, the limiting part is abutted against the outer side of the second support arm, and when the first hook-shaped part is positioned between the first support arm and the second support arm, the limiting part is separated from the second support arm.

8. The door-lock apparatus according to claim 7,

the guide portion has a guide surface provided obliquely with respect to the first direction; the guide surface is used for contacting with the first hook-shaped part;

and when the first hook-shaped part is positioned outside the first supporting arm, the guide surface protrudes out of the bracket along the direction vertical to the bracket, and the distance between the guide surface and the bracket is gradually increased along the first direction.

9. The door-lock apparatus according to claim 7,

the bracket is provided with a groove for accommodating the limiting piece, and an elastic piece is arranged between the limiting piece and the bottom wall of the groove;

a clamping hook is arranged on one side, away from the guide part, of the limiting part, and a sliding hole for penetrating the clamping hook is formed in the side wall of the groove;

and the elastic piece is used for applying elastic force which is propped against the hole wall of the sliding hole to the clamping hook.

10. The door-lock apparatus according to any one of claims 5 to 9,

the driving piece comprises a torsion spring, and the torsion spring comprises a spiral body, and a first torsion arm and a second torsion arm which are respectively connected to two ends of the spiral body;

the spiral body is sleeved outside the damper body, the first torsion arm abuts against the support, and the second torsion arm abuts against the connecting piece.

11. The door-lock apparatus according to claim 10,

a first limiting column is arranged on the support, and a second limiting column is arranged on the second support arm;

the first torsion arm is abutted against the first limiting column, and the second torsion arm is abutted against the second limiting column.

12. The door-lock apparatus according to any one of claims 5 to 9, wherein a first switch and a second switch are provided on the bracket;

a first protrusion used for triggering the first switch is arranged on the outer side, away from the first support arm, of the second support arm, and a second protrusion used for triggering the second switch is arranged on the end, away from the first mounting portion, of the first hook-shaped portion; the first switch and the second switch are used for detecting whether the door body is closed or not.

13. A cooking appliance comprising a door body, a cabinet and the door lock device according to any one of claims 1 to 12;

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