CN113700408B

CN113700408B - Switching door assembly and household appliance

Info

Publication number: CN113700408B
Application number: CN202111005391.2A
Authority: CN
Inventors: 位帅帅; 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: 2021-08-30
Filing date: 2021-08-30
Publication date: 2023-02-17
Anticipated expiration: 2041-08-30
Also published as: CN113700408A

Abstract

The invention discloses a door opening and closing assembly and a household appliance. A switching door assembly comprising: a door hook; a support; the damping subassembly is installed the support, the damping subassembly includes attenuator, swing piece and driving piece, swing piece rotates and connects the driving piece with the attenuator door hook to under the circumstances that the effort was applyed to the driving piece, the driving piece rotates and drives behind the predetermined angle swing piece compression the attenuator, during the attenuator is compressed to door hook provides the damping and takes place to rotate. Among the above-mentioned switch door subassembly, under the condition that the door hook applyed the effort to the driving piece, the driving piece can rotate earlier and drive swing piece compression attenuator after predetermineeing the angle, and then can realize when the door hook acts on the driving piece initial stage, the door hook is unlikely to be kick-backed and cause to close the door unsmooth or even the stagnation phenomenon by the attenuator, has promoted user experience.

Description

Switch door assembly and household appliance

Technical Field

The invention relates to the technical field of household appliances, in particular to a door opening and closing assembly and a household appliance.

Background

The household appliance can comprise a cavity and a door body, wherein the cavity is arranged in the cavity, and the door body is rotatably connected with the cavity to open or close the cavity. In the opening and closing process of the door body, the noise of closing the door can be increased if the closing speed of the door body is too high by depending on the acting force of a user or the inertia of the door body. In order to solve the problem of high noise of closing the door, the generally adopted scheme is a slow door closing mechanism which can provide damping force to reduce the door closing speed when the door is closed, so that the door closing noise is reduced. However, in the related art, the slow closing mechanism provides a certain damping force when the door hook abuts against the door hook, so that the door hook is easily rebounded, and the door is closed unsmoothly or even stopped.

Disclosure of Invention

The embodiment of the invention provides a switching door assembly and a household appliance.

An opening and closing door assembly according to an embodiment of the present invention includes:

a door hook;

a support;

the damping subassembly is installed the support, the damping subassembly includes attenuator, swing piece and driving piece, swing piece rotates and connects the driving piece with the attenuator door hook to under the circumstances that the effort was applyed to the driving piece, the driving piece rotates and drives behind the predetermined angle swing piece compression the attenuator, during the attenuator is compressed to door hook provides the damping and takes place to rotate.

Among the above-mentioned switch door subassembly, under the condition that the door hook applyed the effort to the driving piece, the driving piece can rotate earlier and drive swing piece compression attenuator after predetermineeing the angle, and then can realize when the door hook acts on the driving piece initial stage, the door hook is unlikely to be kick-backed and cause to close the door unsmooth or even the stagnation phenomenon by the attenuator, has promoted user experience.

In some embodiments, the door hook includes a first door hook connected to the door body by a door hook elastic member and a second door hook fixed to the door body.

In some embodiments, the driving member has a receiving groove, the top of the receiving groove has a rotation space, the bottom of the receiving groove has a swing space, one end of the swing member rotates and is received in the rotation space, the other end of the swing member is received in the swing space, and the swing space is used for providing a space for the driving member to rotate by the preset angle.

In some embodiments, the driving member includes a first arm and a second arm spaced apart from each other, the first arm has the accommodating groove formed therein, and when the door hook moves toward the driving member, the door hook passes under the second arm and abuts against the first arm to drive the driving member to rotate.

In some embodiments, the damping assembly includes an elastic member, the elastic member and the driving member are located on opposite sides of the bracket, the bracket is provided with a through hole, the driving member is connected to the elastic member through the through hole, and the elastic member is configured to drive the driving member to rotate at an accelerated speed so that the driving member drives the door hook to accelerate.

In some embodiments, when the door hook is separated from the driving member, the direction of the acting force of the elastic member on the driving member is located above a connecting point of the elastic member and the driving member and a connecting line of the rotating shaft of the driving member, and when the driving member is acted by the door hook, the direction of the acting force of the elastic member on the driving member is located below a connecting point of the elastic member and the driving member and a connecting line of the rotating shaft of the driving member.

In some embodiments, the bracket is provided with a limiting member, and the limiting member abuts against the driving member to limit a connection position of the elastic member and the driving member when the door hook is separated from the driving member.

In some embodiments, the elastic member includes a first elastic member and a second elastic member, the driving member includes a connecting portion, the first elastic member and the second elastic member are both connected to the connecting portion, and an included angle formed by the first elastic member and the second elastic member is an acute angle.

In certain embodiments, the damping assembly includes a cover mounted to the bracket and covering the actuator.

A home appliance of an embodiment of the present invention includes:

a cavity;

the door body is rotationally connected to one side of the cavity;

in the door opening and closing assembly in any one of the above embodiments, the bracket is installed in the cavity, and the door hook is installed on the door body.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a partial structural schematic view of a home appliance according to an embodiment of the present invention;

fig. 2 to 5 are schematic structural views of parts of the opening and closing door assembly of the embodiment of the present invention;

fig. 6-7 are exploded schematic views of portions of a switching door assembly of an embodiment of the present invention;

FIG. 8 is a schematic view of the connection of the driver to the damper according to an embodiment of the present invention;

FIG. 9 is a schematic view of the direction of force applied to a driving member according to an embodiment of the present invention;

FIG. 10 is another schematic view of the direction of force applied to the driving member in accordance with an embodiment of the present invention;

fig. 11 to 16 are schematic views illustrating a door closing operation of the opening and closing door assembly according to the embodiment of the present invention;

fig. 17 to 18 are schematic views illustrating the door opening operation of the opening and closing door assembly according to the embodiment of the present invention.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations or positional relationships based on those shown in the drawings, merely for convenience of description and simplification of the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

The disclosure herein provides many different embodiments or examples for implementing different features of the invention. In order to simplify the disclosure of the present invention, the components and arrangements of specific examples are described herein. Of course, they are merely examples and are not intended to limit the present invention. Moreover, the present invention may repeat reference numerals and/or reference letters in the various examples, which have been repeated for purposes of simplicity and clarity and do not in themselves dictate a relationship between the various embodiments and/or configurations discussed. In addition, the present invention provides examples of various specific processes and materials, but one of ordinary skill in the art will recognize the application of other processes and/or the use of other materials.

Referring to fig. 1 to 7, a door opening and closing assembly 100 according to an embodiment of the present invention includes a door hook, a bracket 102, and a damping assembly 104. The damping assembly 104 is mounted on the bracket 102, the damping assembly 104 includes a damper 106, an oscillating member 108 and a driving member 110, the oscillating member 108 is rotatably connected to the driving member 110 and the damper 106, when the door hook applies a force to the driving member 110, the driving member 110 rotates a predetermined angle to drive the oscillating member 108 to compress the damper 106, and when the damper 106 is compressed, the damping assembly provides damping to the door hook and rotates.

In the door opening and closing assembly 100, under the condition that the door hook applies an acting force to the driving element 110, the driving element 110 can rotate by a preset angle and then drive the swinging element 108 to compress the damper 106, so that when the door hook acts on the driving element 110 at an initial stage, the door hook is not rebounded by the damper 106 to cause a phenomenon of unsmooth door closing or even stagnation, and the user experience is improved.

Specifically, the damper 106 is rotatably connected to the driving member 110 through the swinging member 108, so that a split type rotational connection is realized, that is, the swinging member 108 is rotatably connected to the driving member 110, the swinging member 108 is rotatably connected to the damper 106, and when the driving member 110 drives the swinging member 108 to rotate, an interval of a preset angle is provided, so that when the door hook abuts against the driving member 110, the damper 106 does not generate a damping effect. The phenomenon of unsmooth or even stagnation of door closing is avoided.

The door opening and closing assembly 100 may be used in household appliances including, but not limited to, dishwashers, microwave ovens, steam boxes, ovens (including electric ovens, microwave ovens, and micro-steamers), disinfection cabinets, and the like. The household appliance may include a door body 200 and a cavity, and the door body 200 is rotatably connected to one side of the cavity, for example, to the left or right side of a front plate of the cavity, forming a side-opening type household appliance. The door opening and closing assembly 100 according to the embodiment of the present invention may be applied to a side-opening type home appliance, and the bracket 102 may be fixed to a front panel of a cavity. The cavity is provided with a cavity for storing articles or food. The household appliance can perform cleaning, storing, sterilizing, cooking and other operations on the articles placed in the chamber. The door 200 may be a double-glazing door, for example. One of the benefits of using a glass door body is that it is convenient for a user to observe the food conditions inside the cavity from the outside. In addition, the outer surface of the door body 200 can be provided with a handle, so that a user can conveniently perform door opening and closing operations. The household appliance further comprises a shell outside the cavity, the shell can protect electric parts and structural parts in the household appliance, and meanwhile, damage to a user is avoided.

The actuator 110 may be pivotally coupled to the bracket 102 via a pivot on the bracket 102. In one example, the actuator 110 may be an actuating lever. The door hook may be installed at the door body 200 for hooking the driving member 110 at the cavity side when the door is closed, so as to close the door. Preferably, the material of the door hook can be selected from metals, such as iron, aluminum, stainless steel, alloys, and the like. The door hook is in a length shape as a whole, and the tail end of the door hook is provided with a hook-shaped part which is clamped in the cavity. The number of the door hooks may be set according to actual conditions, for example, the number of the door hooks may be single, two, or more than two. In an embodiment of the present invention, the door hook includes two door hooks, i.e., a first door hook 112 and a second door hook 114. In the embodiment shown in fig. 1, the first door hook 112 is an upper door hook and the second door hook 114 is a lower door hook.

In the embodiment of the present invention, the first door hook 112 is connected to the door body 200 by the door hook elastic member 116, and the second door hook 114 is fixed to the door body 200. During the closing process of the door body 200, the second door hook 114 may be opposite to the damping assembly 104, and when the second door hook 114 applies an acting force to the driving element 110, the driving element 110 rotates by a preset angle to drive the swinging element 108 to compress the damper 106, and when the damper 106 is compressed, the damper provides damping to the door hook and rotates.

Compared with the two door hooks connected with the door body through the door hook elastic members, the first door hook 112 according to the embodiment of the present invention is connected with the door body 200 through the door hook elastic members 116, and the second door hook 114 is fixed on the door body 200, which has the advantages that, on one hand, in the door closing process, the first door hook 112 can be allowed to move upwards along the door body 200 for a certain distance, so that the door body 200 is easy to close, and the first door hook 112 can be reset through the door hook elastic members 116, and on the other hand, when the fixed second door hook 114 is abutted against the driving member 110, a stable acting force can be provided for the driving member 110, so as to avoid the position change of the second door hook 114 from causing additional component force, which affects the smoothness of door closing and causes structural deformation. Moreover, compared to integrally connecting two door hooks, the first door hook 112 according to the embodiment of the present invention is connected to the door body 200 through the door hook elastic member 116, and the second door hook 114 is fixed to the door body 200, so that the first door hook 112 and the second door hook 114 are prevented from interfering with each other.

For convenience of description, the following embodiments of the present invention will be described with a first case where the first door hook 112 is an upper door hook and the second door hook 114 is a lower door hook. A person skilled in the art can understand and implement the second case that the first door hook 112 is a lower door hook and the second door hook 114 is an upper door hook with reference to the first case, and the second case is not described in detail in the embodiments of the present invention.

In one example, the door hook elastic member 116 is a spring, in the present embodiment, the first door hook 112 is connected by a door hook spring, the limit is guided by a sheet metal through hole of the door body 200 and a sheet metal bent structure, the second door hook 114 is fixedly mounted on the door body 200, and the limit is guided by the sheet metal bent structure of the door body 200. Thus, the first door hook 112 and the second door hook 114 can be prevented from being in poor fit due to position deviation.

In some embodiments, the bracket 102 is provided with reinforcing ribs on both sides to increase the structural strength of the bracket and improve the stability and reliability of the opening and closing door assembly 100. The bracket 102 is small at the upper part and large at the lower part, so that the weight can be reduced, the space occupation can be reduced, and the material can be saved, the damping component 104 is mainly arranged at the lower part of the bracket 102, so that the weight ratio of the lower part is larger, the integral gravity center of the bracket 102 is lower, and the stability of the bracket 102 can be kept.

In some embodiments, the bracket 102 defines a first hole 118, and a lower sidewall of the first hole 118 is inclined upward toward the inside of the bracket 102 along a vertical direction for guiding the first door hook 112 to move upward. Thus, the first door hook 112 can be guided to be clamped on the bracket 102.

Specifically, during the closing process of the door body 200, the first door hook 112 starts to move upwards along the lower sidewall of the first hole 118 under the driving of the door body 200, and at this time, the door hook elastic member 116 is stretched. In the process that the door body 200 is continuously closed, the first door hook 112 moves to the right side of the lower side wall of the first hole 118, the stretched door hook elastic piece 116 resets the first door hook 112, and the first door hook 112 is clamped on the right side of the lower side wall of the first hole 118, so that the first door hook 112 and the cavity are locked. In addition, a switch 120 (e.g., a micro switch) is further installed on the bracket 102, and when the first door hook 112 is clamped on the right side of the lower sidewall of the first hole 118, the bottom of the first door hook 112 triggers the switch 120 (as shown in fig. 15), so that the switch 120 outputs a door closing signal. The controller of the household appliance receives the door closing signal, and can determine that the door body 200 is closed in place. Only when the door body 200 is closed to the right position, the controller can control the household appliance to work, so that certain accidents, such as microwave leakage, steam leakage and the like, are avoided, and the use safety of the household appliance is ensured. For example, the household appliance is a side-opening microwave oven. When the microwave oven works, microwaves are fed into the cavity body to cook food. If the door body 200 is not closed, the microwave in the cavity leaks out, and the user is injured. Therefore, when the door 200 is closed in place, the switch 120 is triggered by the first door hook 112 to generate a door closing signal, and the controller can control the microwave oven to feed microwaves into the cavity. As another example, the household appliance is a steam oven. The steam stove during operation can go out to carry high temperature steam in the cavity and carry out the food culinary art, if work under the condition that the door body 200 was not closed, high temperature steam in the cavity can leak away, causes the scald to the user. Therefore, when the door body 200 is closed in place, the switch 120 is triggered by the first door hook 112 to generate a door closing signal, and the controller can control the steam oven to generate high-temperature steam into the cavity. In addition, when the user triggers the household appliance to work, if the door body 200 is not closed to the proper position (i.e., the controller does not receive a door closing signal), the household appliance may send an alarm to prompt the user to close the door body 200 to the proper position and then trigger the household appliance to work.

Preferably, the second door hook 114 protrudes from the door body 200 more than the first door hook 112, on one hand, when the second door hook 114 enters the cavity and acts on the driving component 110, the door body 200 is also driven to be close to the cavity, and simultaneously drives the first door hook 112 to enter the first hole 118, so as to realize interlocking. On the other hand, the first door hook 112 does not enter the cavity until the second door hook 114 abuts against the driving member 110, and the door closing resistance can be reduced.

In some embodiments, the bracket 102 defines a second hole 122, and the second door hook 114 extends through the second hole 122 to apply a force to the driving member 110. In this manner, the second door hook 114 may be caused to exert a force on the actuator 110.

Specifically, the inner diameter of the second hole 122 is sized to allow the second door hook 114 to freely enter and exit, so as to avoid physical interference with the second door hook 114 and ensure smooth door opening and closing.

In the embodiment shown in fig. 1, the damper 106 is a linear damper. It is understood that in other embodiments, the damper 106 may also be other dampers 106, such as a rotary damper.

In some embodiments, referring to fig. 4 and fig. 6, the driving element 110 is provided with an accommodating groove 124, a rotating space 126 is provided at the top of the accommodating groove 124, a swinging space 128 is provided at the bottom of the accommodating groove 124, one end of the swinging element 108 is rotatably accommodated in the rotating space 126, the other end of the swinging element 108 is accommodated in the swinging space 128, and the swinging space 128 is used for providing a space for the driving element 110 to rotate by a preset angle. Therefore, the driving member 110 can drive the swinging member 108 to rotate after rotating a predetermined angle.

Specifically, referring to fig. 4, the driving member 110 includes a first arm 130 and a second arm 132 spaced apart from each other, a substantially U-shaped space 134 is formed between the first arm 130 and the second arm 132, and the second arm 132 is closer to the door body 200 (door hook) than the first arm 130, and the second arm 132 is shorter than the first arm 130 relative to the rotation axis of the driving member 110.

The first arm 130 defines a receiving groove 124, and specifically, in the illustrated embodiment, the receiving groove 124 is defined on a right side of the first arm 130, and the swing element 108 is located in the receiving groove 124.

The swing member 108 has a connecting rotation portion 136 at a top end thereof, and the connecting rotation portion 136 is rotatably received in the rotation space 126. In one example, the rotation space 126 is substantially cylindrical, and the connection rotation portion 136 is cylindrical to match the rotation space 126.

The installation of the swing space 128 can prevent the swing member 108 from being acted on when the driving member 110 starts to rotate, and further prevent the damper 106 from being compressed, so that the door hook will not be rebounded or even stopped due to the resistance of the damper 106 at the initial stage of abutting the driving member 110. The size of the swing space 128 may determine the size of the preset angle, and may be calibrated according to actual conditions.

Further, a protrusion 138 is disposed at a right side of the swing space 128, and the protrusion 138 is used for limiting the swing member 108 in the receiving groove 124, so as to prevent the swing member 108 from being separated from the receiving groove 124.

In some embodiments, the driving member 110 includes a first arm 130 and a second arm 132 spaced apart from each other, the first arm 130 defines a receiving slot 124, and when the door hook moves toward the driving member 110, the door hook passes under the second arm 132 and abuts against the first arm 130 to drive the driving member 110 to rotate. Therefore, after the door hook drives the driving member 110 to rotate, the second arm 132 can hook the door hook to drive the door hook to close the door.

Specifically, when the door is closed, the second door hook 114 enters the cavity at a certain initial speed or inertia, and passes through the lower side of the second arm 132, and the second door hook 114 and the first arm 130 are not interfered with each other, and then the second door hook 114 abuts against the first arm 130, so that the driving element 110 rotates, at this time, the second arm 132 is also rotated by the rotating driving element 110, the right side of the second arm 132 abuts against the left side of the door hook, and the rotating driving element 110 can drive the door hook to continue to close the door through the second arm 132.

In the illustrated embodiment, the first arm 130 and the second arm 132 are substantially integrally located at one side of the rotational axis of the driving member 110 in the vertical direction, so that the first arm 130 can be rotated by being early abutted against the second door hook 114. The distal end of the first arm 130 protrudes toward the door hook.

In some embodiments, the damping assembly 104 includes an elastic member, and the elastic member and the driving member 110 are located on opposite sides of the bracket 102, referring to fig. 3 and 5, the bracket 102 is provided with a through hole 140, the driving member 110 is connected to the elastic member through the through hole 140, and the elastic member is used for driving the driving member 110 to rotate at an accelerated speed so that the driving member 110 drives the door hook to rotate at an accelerated speed. Therefore, the process that the door hook is accelerated and then decelerated can be realized.

Specifically, the elastic member and the driving member 110 located on opposite sides of the bracket 102 may be distributed with respect to the structural members, so as to avoid a reduction in space and an excessive concentration of weight due to too many structural members on the same side of the bracket 102, which are not favorable for configuration of the structural members.

The elastic member can provide a pulling force to the driving member 110 to accelerate the driving member 110 to drive the door hook, and can also provide a pushing force to the driving member 110 to accelerate the driving member 110 to drive the door hook. In the illustrated embodiment, the elastic member provides a pulling force to the driving member 110 to accelerate the driving member 110 with the door hook.

Since the driving member 110 can drive the second hook 114 to accelerate, the door 200 can be closed by the force of the driving member 110 during the acceleration stage. And during the acceleration of the second door hook 114, the damper 106 is compressed after the driving member 110 rotates by a predetermined angle. As the door closing process continues, the swinging member 108 continues to compress the damper 106, the compression amount of the damper 106 increases, the damping force provided increases, and when the damping force provided by the damper 106 is greater than the driving force provided by the driving member 110, the second door hook 114 starts to decelerate, so that the noise generated when the door body 200 is closed is not too great in the deceleration stage. In the embodiment of the present invention, the damper 106 can rotate when compressed, and the rotation of the rotating member and the swinging member 108 can be matched, so that the second door hook 114 can enter the cavity more smoothly. In the illustrated embodiment, the bracket 102 is further provided with a damper cover 142, and the damper cover 142 is provided with an accommodating space therein. The damper cover 142 may be mounted to the bracket 102 by screws, interference fit, welding, snaps, etc., and in the illustrated embodiment, the damper cover 142 is mounted to the bracket 102 by snaps.

Referring to fig. 8, the linear damper includes a thick rod portion 144 and a thin rod portion 146, the thin rod portion 146 is telescopically connected to the thick rod portion 144, the thick rod portion 144 is accommodated in the accommodating space and rotatably connected to the inside of the accommodating space, and the linear damper can rotate around a connection position between the thick rod portion 144 and the inside of the accommodating space. The slender rod portion 146 extends out of the damper cover 142 and is rotatably connected to the oscillating member 108. In the embodiment shown in fig. 8, the swinging member 108 has a coupling hole 147 formed on the right side thereof, the coupling hole 147 is substantially cylindrical, and the coupling hole 147 is opened on the right side thereof. The end of the thin rod part 146 is connected with a cylindrical part 149, and the cylindrical part 149 is connected with the connecting hole 147 in a matching way to realize rotary connection. The cylindrical portion 149 may be formed integrally with the slender portion 146 or may be formed separately from the slender portion 149. And is not particularly limited herein.

It will be appreciated that in other embodiments, the shape of the connection hole 147 may be other shapes, such as a spherical shape, and the end of the thin rod portion 146 may be shaped to match the shape of the connection hole 147, such as a spherical shape. And is not particularly limited herein.

It will be appreciated that in other embodiments, the resilient member may be omitted so that the door hook slows down during closing.

In some embodiments, the direction of the force applied to the driving element 110 by the elastic element is above the line between the connection 147 of the elastic element and the driving element 110 and the rotation axis of the driving element 110 when the door hook is separated from the driving element 110, and the direction of the force applied to the driving element 110 by the elastic element is below the line between the connection 147 of the elastic element and the driving element 110 and the rotation axis of the driving element 110 when the driving element 110 is acted by the door hook. Therefore, the driving member 110 can have different rotating trends before and during door closing, which is beneficial to realizing close door closing.

Specifically, referring to fig. 9, the direction of the force F of the elastic member on the driving member 110 is located above the connection line L between the connection 147 of the elastic member and the driving member 110 and the rotation axis of the driving member 110, and the driving member 110 has a tendency to rotate along the first direction under the force of the elastic member. Referring to fig. 10, the direction of the force F of the elastic member on the driving member 110 is located below the connection point 147 between the elastic member and the driving member 110 and the connection line L of the rotation shaft of the driving member 110, and the driving member 110 has a tendency to rotate along the second direction under the force of the elastic member. The first direction is different from the second direction. In the illustration, the first direction is clockwise and the second direction is counterclockwise.

When the door hook has not yet abutted the driver 110, the driver 110 is stationary and the force of the resilient member acts on the driver 110, so that the driver 110 has a tendency to rotate clockwise. When the door hook abuts against the driving element 110 (such as abutting against the first arm 130), the driving element 110 rotates counterclockwise under the action of the door hook, so that the joint 147 between the elastic element and the driving element 110 also rotates counterclockwise, the direction of the acting force of the elastic element on the driving element 110 is switched to the lower side of the connection line, the driving element 110 is switched from the trend of having clockwise rotation to the trend of rotating counterclockwise, at this time, the driving element 110 is not limited, and continues to rotate counterclockwise under the action of the elastic element to drive the door hook to accelerate.

The driving member 110 has a process of changing the rotation trend, so that the rotation angle of the driving member 110 is larger, and the larger rotation angle of the driving member 110 can drive the second door hook 114 to penetrate into the cavity further, so that the door body 200 is more compact when being closed.

It should be noted that, in the initial state, the distance (angle) between the position of the connection 147 between the elastic member and the driving member 110 and the critical position of the rotation trend transition of the driving member 110 is smaller than the preset angle. Preferably, in the initial state, the position of the connection 147 between the elastic member and the driving member 110 is close to the critical position of the driving member 110 for changing the rotation trend, so that when the door hook abuts against the driving member 110, the door hook with the higher initial speed can rotate the driving member 110 counterclockwise to change the rotation trend, without spending too much kinetic energy of the door hook to change the rotation trend.

In some embodiments, referring to fig. 2, the bracket 102 is provided with a limiting member 148, and when the door hook is separated from the driving member 110, the limiting member 148 abuts against the driving member 110 to limit a connection point 147 of the elastic member and the driving member 110. Thus, the connection 147 between the elastic member and the driving member 110 can be limited by the limiting member 148.

Specifically, the limiting member 148 is disposed above and to the left of the through hole 140 of the bracket 102, and is used to limit a limiting position to which the driving member 110 can rotate along the first direction, i.e., a position at which the connection point 147 of the elastic member and the driving member 110 is located above the rotation axis of the driving member 110. In the illustrated embodiment, the retaining member 148 has a semi-cylindrical shape.

In some embodiments, referring to fig. 3 and 7, the elastic member includes a first elastic member 150 and a second elastic member 152, the driving member 110 includes a connecting portion 154, the first elastic member 150 and the second elastic member 152 are both connected to the connecting portion 154, and an included angle formed by the first elastic member 150 and the second elastic member 152 is an acute angle. In this way, the driving member 110 is driven by the resultant force of the two elastic members.

Specifically, in the rotation process of the driving element 110, one of the elastic elements may be stretched longer, and the other elastic element may be compressed, so that the magnitude of the resultant force generated by the two elastic elements is smaller in the rotation process of the driving element 110, and even when the door body 200 is closed in place, the driving element 110 can generate a larger abutting force to the door hook, so that the door body 200 is closed more tightly. In one example, both springs may be tension springs. The first elastic member 150 is positioned above the second elastic member 152. It is understood that other embodiments may employ other elastic members, and are not specifically limited herein.

One end of the first elastic element 150 hooks the positioning post on the bracket, and the other end hooks the connecting portion 154. One end of the second elastic element 152 hooks another positioning column on the bracket, and the other end hooks the connecting portion 154.

The acute angle may be 30 degrees, 35 degrees, 40 degrees, etc., and is not particularly limited thereto.

In some embodiments, the damper assembly 104 includes a cover 156, the cover 156 being mounted to the bracket 102 and covering the actuator 110. In this way, the driving member 110 is prevented from interfering with other structural members during the rotation process.

Specifically, the cover body 156 may cover the driving element 110 as a whole or cover most of the driving element 110, and the driving element 110 is spaced apart from other structural elements by the cover body 156, so as to avoid the phenomenon that the door cannot be closed or is not closed smoothly due to interference between the driving element 110 and other structural elements in the rotation process. The cover 156 may be mounted to the bracket 102 by screws, interference fit, welding, snaps, and the like. In the illustrated embodiment, the cover 156 is mounted to the bracket 102 by screws.

The following describes a principle process of the switching door assembly 100 of the embodiment of the present invention.

Description of initial and terminal states: in the initial state (i.e. the second hook 114 is not yet abutted to the driving member 110), the first elastic member 150 and the second elastic member 152 connect the bracket 102 and the driving member 110, and the resultant force direction of the two elastic members is located above the connection point 147 of the elastic member and the driving member 110 and the connection line of the rotating shaft of the driving member 110, at this time, the acting force (resultant force) of the elastic members forces the driving member 110 to have a tendency of rotating clockwise. Meanwhile, the driving member 110 is limited to move clockwise by the limiting member 148 on the bracket 102. The oscillating member 108 is rotatably coupled to the damper 106 and the driving member 110, respectively, and the oscillating member 108 is freely rotatable about the driving member 110. In the end state, the second hook 114 pulls the driving member 110 to move outward, and the angle between the swinging member 108 and the driving member 110 is maximized, thereby moving the first elastic member 150, the second elastic member 152 and the damper 106. During the movement, when the direction of the acting force (resultant force) of the elastic member is located above the line connecting the joint 147 of the elastic member and the driving member 110 and the rotation axis of the driving member 110, the force provided by the elastic member to the driving member 110 is changed from a counterclockwise force to a clockwise force which rotates the driving member 110. When the second door hook 114 is pulled out, the driving member 110 rotates clockwise to an initial position, and simultaneously the first and second elastic members 152 and the damper 106 are restored to the initial state.

The smooth door closing process of the door opening and closing assembly 100 for realizing the slow door closing/soft door closing is as follows:

1) As shown in fig. 2, 3, 11 and 12, the second hook 114 initially contacts the first arm 130 of the driving member 110 at a certain initial speed and forces the driving member to rotate counterclockwise around the rotation axis to coincide with the swinging member 108, and the damper 106 does not play a blocking role in the process (i.e., the second hook 114 does not rebound significantly after colliding with the first arm 130, so as to prevent the second hook 114 from colliding back and forth in the gap 134 between the first arm 130 and the second arm 132, which causes a stagnation phenomenon). At the same time, the direction of the force of the elastic member is rotated to a position below the line connecting the joint 147 of the elastic member and the driving member 110 and the rotation axis of the driving member 110, and the second arm 132 of the driving member 110 is rapidly brought into contact with the second door hook 114.

2) As shown in fig. 13 to 16, because the direction of the force of the elastic member changes, the force of the elastic member changes to a force that makes the driving member 110 rotate counterclockwise, and the driving member 110 drives the swinging member 108 to rotate together and drives the second door hook 114 to move; and the door closing is finished until the movement is stopped.

(II) the door opening process of the door opening and closing assembly 100 for realizing the slow door closing/soft door closing:

as shown in fig. 15 to 18, fig. 2 and fig. 3, the second door hook 114 drives the driving member 110 to rotate clockwise under the action of manual force. In the process, the force of the elastic member is changed from a force forcing the driving member 110 to rotate counterclockwise to a force forcing the driving member to rotate clockwise. When the second door hook 114 is pulled out, the driving member 110 rotates to the initial position. Finally, the first and second

elastic members

150 and 152, the swinging member 108, and the damper 106 are restored to the initial state, and the opening of the door is ended.

In summary, the present invention provides a door opening and closing assembly 100 with a split-type rotary driving manner, which can solve the problem of continuous and stable door closing during the door opening and closing process of the side-sliding door household appliance. During the door closing process, the door opening and closing assembly 100 can continuously and stably rotate the driving member 110 and drive the door hook to perform the door closing action; during the door opening process, the door opening and closing assembly 100 can smoothly enable the driving member 110 to actively open the door and stop at the designated position, so that the problem of opening and closing the door for many times can be smoothly realized. In conclusion, the door opening and closing assembly 100 has strong universality and is easy to apply and popularize.

An embodiment of the present invention also provides a home appliance, including:

a cavity;

a door body 200 rotatably connected to one side of the cavity;

in the door opening and closing assembly 100 according to any of the above embodiments, the bracket 102 is installed in the cavity, and the door hook is installed in the door body 200.

Among the above-mentioned domestic appliance, under the condition that the door hook applyed the effort to driving piece 110, driving piece 110 can rotate earlier and drive oscillating piece 108 compression attenuator 106 behind the preset angle, and then can realize when the door hook acted on driving piece 110 initial stage, the door hook is unlikely to be kick-backed and causes to close the door unsmooth or even the stagnation phenomenon by attenuator 106, has promoted user experience.

Specifically, the household appliance includes, but is not limited to, a microwave oven, an oven (including an electric oven, a microwave oven, and a micro-steaming and baking all-in-one machine), a steam box, a dishwasher, a sterilizing cabinet, and the like having the door 200.

It should be noted that the above explanation of the embodiment and the advantageous effects of the opening and closing door assembly 100 is also applicable to the household appliance of the present embodiment, and is not detailed herein to avoid redundancy.

In the description of the present specification, reference to the description of "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. An opening and closing door assembly, comprising:

a door hook;

a support;

the damping component is installed on the support and comprises a damper, a swinging piece and a driving piece, the swinging piece is rotatably connected with the driving piece and the damper, under the condition that the door hook applies acting force to the driving piece, the driving piece rotates for a preset angle and then drives the swinging piece to compress the damper, and when the damper is compressed, the damper provides damping for the door hook and rotates,

the driving part is provided with a containing groove, the top of the containing groove is provided with a rotating space, the bottom of the containing groove is provided with a swinging space, one end of the swinging part is rotatably contained in the rotating space, the other end of the swinging part is contained in the swinging space, and the swinging space is used for providing a space for the driving part to rotate by a preset angle.

2. The switch door assembly according to claim 1, wherein the door hook comprises a first door hook and a second door hook, the first door hook is connected with a door body of the household appliance through a door hook elastic member, and the second door hook is fixed on the door body.

3. The door opening and closing assembly according to claim 1, wherein the driving member includes a first arm and a second arm spaced apart from each other, the first arm defining the receiving slot, and wherein when the door hook moves toward the driving member, the door hook passes under the second arm and abuts against the first arm to drive the driving member to rotate.

4. The door opening and closing assembly according to claim 1, wherein the damping assembly comprises an elastic member, the elastic member and the driving member are disposed on opposite sides of the bracket, the bracket is provided with a through hole, the driving member is connected to the elastic member through the through hole, and the elastic member is configured to drive the driving member to rotate at an accelerated speed so that the driving member drives the door hook to rotate at an accelerated speed.

5. The assembly as claimed in claim 4, wherein the direction of the force applied by the resilient member to the driving member when the door hook is separated from the driving member is located above the line connecting the connection of the resilient member to the driving member and the rotational axis of the driving member, and the direction of the force applied by the resilient member to the driving member when the driving member is acted by the door hook is located below the line connecting the connection of the resilient member to the driving member and the rotational axis of the driving member.

6. The assembly according to claim 5, wherein said bracket is provided with a limiting member, and said limiting member abuts against said driving member to limit a connection between said elastic member and said driving member when said door hook is separated from said driving member.

7. The door assembly as claimed in claim 4, wherein the resilient member comprises a first resilient member and a second resilient member, the driving member comprises a connecting portion, the first resilient member and the second resilient member are connected to the connecting portion, and an included angle formed by the first resilient member and the second resilient member is an acute angle.

8. A switch door assembly as claimed in claim 1, wherein said damping assembly includes a cover mounted to said bracket and covering said actuator.

9. A household appliance, characterized in that it comprises:

a cavity;

the door body is rotationally connected to one side of the cavity;

the switch door assembly of any one of claims 1-8, said bracket mounted to said cavity and said door hook mounted to said door body.