CN114427327A

CN114427327A - Door lock structure, household appliance and control method of household appliance

Info

Publication number: CN114427327A
Application number: CN202210280950.9A
Authority: CN
Inventors: 王�义; 崔永杰; 沈方添; 刘刚
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: 2022-03-21
Filing date: 2022-03-21
Publication date: 2022-05-03

Abstract

The application discloses a door lock structure, a household appliance and a control method of the household appliance. The door lock structure comprises a clamping piece, a bracket and a limiting piece. The clamping piece is arranged on the door body and comprises a clamping hook. The support is installed in the box to include with the spacing portion of pothook complex, the pothook can penetrate the support, the door body is connected with the box opens and shuts. The limiting piece is rotatably arranged on the bracket and can reciprocate between an unlocking position and a locking position. The driving assembly is matched with or disengaged from the limiting piece, the limiting piece is driven to be switched to an unlocking position when the driving assembly is matched with the limiting piece, and the limiting piece is switched to a locking position due to self weight when the driving assembly is disengaged from the limiting piece; in the unlocking position, the limiting piece avoids the hook so that the hook can move to be separated from or matched with the limiting part. In the application, the limiting part is arranged to limit the clamping hook on the limiting part, so that the child lock function is realized.

Description

Door lock structure, household appliance and control method of household appliance

Technical Field

The application relates to the technical field of household appliances, in particular to a door lock structure, a household appliance and a control method of the household appliance.

Background

The door opening mode of the household appliance (such as a cooking appliance) is of a key type, a sliding door type or a touch type, the door can be opened without external force or only by small external force, the whole operation is simple and convenient, and only one step of action is needed, so that children can open the door easily. The door opening mode of the cooking appliance is too simple, the function of a child lock is avoided, and the potential safety hazard that children can open the oven door by themselves to be scalded by high-temperature objects exists in the use process of the cooking appliance.

Disclosure of Invention

The application provides a door lock structure, a household appliance and a control method of the household appliance, which are at least used for solving the problems that the door opening mode of the household appliance is too simple and the function of a child lock is not available.

The embodiment of the application provides a door lock structure. The door lock structure comprises a clamping piece, a support, a limiting piece and a driving assembly. The clamping piece is arranged on the door body and comprises a clamping hook. The support is arranged in the box body and comprises a limiting part matched with the clamping hook, the clamping hook can penetrate into the support, and the door body is connected with the box body in an opening and closing mode. The limiting piece is rotatably arranged on the bracket and can reciprocate between an unlocking position and a locking position. The driving assembly is matched with or separated from the limiting piece, the limiting piece is driven to be switched to the unlocking position when the driving assembly is matched with the limiting piece, and the limiting piece is switched to the locking position due to self weight when the driving assembly is separated from the limiting piece; in the unlocking position, the limiting piece avoids the hook so that the hook can move to be separated from or matched with the limiting part; in the locking position, the limiting piece is suitable for being matched with the hook to position the position of the hook.

In some embodiments, when the hook is separated from the position-limiting part and the limiting member is located at the locking position due to self-weight, the hook can push the limiting member to rotate to the unlocking position.

In some embodiments, the limiting member includes a body, a fitting portion and a limiting portion. The body is rotatably mounted to the bracket. The matching part is arranged on the side surface of the body and is used for matching with the driving component. The limiting part is arranged on the side surface of the body and is used for limiting the clamping hook on the limiting part, and the clamping hook can push the limiting part to move to the unlocking position; the limiting part is heavier than the matching part, and when the driving assembly is disengaged from the matching part, the limiting part moves from the unlocking position to the locking position under the self weight.

In some embodiments, the bracket includes a mounting post and a buckle, the limiting member further includes a blocking portion disposed on a side surface of the body, the body is sleeved on the mounting post so that the limiting member can rotate relative to the mounting post, and the blocking portion is configured to abut against the buckle to limit axial movement of the body along the mounting post.

In some embodiments, the end of the defining portion includes an arcuate surface that, in the locked position, is in contact engagement with the catch to locate the catch.

In some embodiments, the driving assembly further comprises a driving member and a transmission member connected to the driving member. The driving piece is mounted on the bracket. The transmission piece is used for being matched with the limiting piece, and the driving piece is used for driving the transmission piece to be matched with or separated from the limiting piece.

In certain embodiments, the drive member comprises an electromagnet; the transmission part comprises a push rod and an elastic part. The push rod penetrates through the electromagnet. The elastic part is sleeved on the push rod, and two ends of the elastic part are respectively abutted against the electromagnet and the tail part of the push rod. Under the condition that the electromagnet is electrified, the electromagnet drives the push rod to move along a first direction so as to push the limiting piece to rotate to the unlocking position; under the condition that the electromagnet is powered off, the elastic part generates restoring force, the restoring force drives the push rod to move along a second direction so as to enable the limiting piece to rotate to the locking position due to self weight, and the first direction is opposite to the second direction.

In some embodiments, the driving member includes a driving circuit, the transmission member includes an electromagnet, and the limiting member is driven to rotate to the unlocking position by magnetic force generated by the electromagnet under the condition that the driving circuit supplies power to the electromagnet; and under the condition that the driving circuit stops supplying power to the electromagnet, the magnetic force of the electromagnet disappears, and the limiting piece falls back to the locking position from the unlocking position due to self weight.

In some embodiments, the limiting member is a metal or alloy member having magnetic properties.

In some embodiments, the defining member is provided with a magnetic unit for magnetically cooperating with the electromagnet.

The embodiment of the application provides a household appliance. Domestic appliance includes door body, box and this application embodiment's lock structure. The box with the door body is connected that opens and shuts, the support with drive assembly install in the box, joint spare install in the door body.

In some embodiments, the household appliance further comprises a control box and an on-off key. The control box is arranged on the door body or the box body and is electrically connected with the driving assembly. The switch key is arranged on the control box; the switch key is used for triggering an unlocking instruction, and the control box controls the drive assembly to be electrified according to the unlocking instruction; and/or the on-off key is used for triggering a locking instruction, and the control box controls the driving component to be powered off according to the locking instruction.

The household appliance also comprises a microswitch and a microwave generator. The micro switch is arranged on the bracket and is electrically connected with the control box. The microwave generator is arranged in the box body and is electrically connected with the control box. And under the condition that the micro switch detects that the clamping hook is not matched with the limiting part, the control box controls the microwave generator to stop working.

An embodiment of the present application provides a method for controlling a home appliance, including: when the door body is in a closed state and needs to be opened, the driving assembly is controlled to be electrified according to an unlocking instruction, and the driving assembly is matched with the limiting piece to drive the limiting piece to be switched to the unlocking position.

In certain embodiments, the control method further comprises: and when the door body is opened for a preset time, controlling the driving assembly to be powered off.

According to the door lock structure, the household appliance and the control method of the household appliance, when the driving assembly is matched with the limiting part, the limiting part is driven by the driving assembly to be switched to the unlocking position, and when the limiting part avoids the hook so that the hook can move to be separated from the limiting part at the unlocking position, the limiting part relieves the limitation on the hook, so that the unlocking of the hook is realized; wherein, at the unblock position, the pothook can be dodged to the limiting part cooperation that can move about to with the pothook, realizes the lock that falls of pothook, makes the door body closed in the box. When the driving component is disengaged from the limiting piece, the limiting piece is switched to the locking position under the dead weight, so that the limiting piece is suitable for being matched with the clamping hook to position the position of the clamping hook, the difficulty of separating the clamping hook from the limiting part is increased, and the function of the child lock is realized.

Additional aspects and advantages of the application 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 application.

Drawings

The foregoing and/or additional aspects and advantages of the present application 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 schematic perspective view of a household appliance according to some embodiments of the present application;

FIG. 2 is a schematic perspective view of a portion of an appliance according to certain embodiments of the present application;

FIG. 3 is a schematic perspective view of a door latch structure according to certain embodiments of the present application;

fig. 4 is a schematic perspective exploded view of a door body and a door hook assembly in a household appliance according to some embodiments of the present disclosure;

FIG. 5 is an enlarged schematic view of a restrictor cooperating with a drive assembly in a door lock configuration according to certain embodiments of the present application;

FIG. 6 is a schematic perspective exploded view of an interlock bracket, a restrictor member and a drive assembly in a door lock configuration according to certain embodiments of the present application;

fig. 7 is a schematic structural view of a door lock structure according to some embodiments of the present invention, in which a limiting member is in a locking position and a hook is engaged with a limiting portion;

fig. 8 is a schematic structural view illustrating that the limiting member is located at the unlocking position and the hook is engaged with the limiting portion in the door lock structure according to some embodiments of the present disclosure;

fig. 9 is a schematic structural view illustrating a lock structure according to some embodiments of the present invention, in which a limiting member is located at a locking position and a hook is separated from a limiting portion;

fig. 10 is a schematic view of the door lock structure according to some embodiments of the present invention, in which the limiting member is located at an intermediate position and the hook is separated from the limiting portion;

fig. 11 is another schematic structural view of the door lock structure according to some embodiments of the present invention, in which the limiting member is located at the middle position and the hook is separated from the limiting portion;

FIG. 12 is a schematic view of a transmission including an electromagnet in a door lock construction according to certain embodiments of the present application;

fig. 13 is a flowchart of a control method of a home appliance according to some embodiments of the present application.

Description of the main element symbols:

the household appliance comprises a household appliance 1000, a door lock structure 100, a door body 200, a first hook 201, a kidney-shaped hole 203, a box body 300, a control box 400 and an on-off key 500;

the clamping piece 10, the hook 11, the hook surface 111, the main body part 13, the moving part 131 and the second hook 133;

an elastic member 20;

the bracket 30, the stopper 31, the receiving space 311, the body 33, the mounting hole 331, the support plate 333, the opening 335, the mounting post 35, the latch 37, and the receiving groove 371;

the limiting piece 50, the body 51, the through hole 511, the limiting part 53, the matching part 55 and the blocking part 57;

the driving assembly 70, the driving member 71, the electromagnet 711, the fixing hole 713, the driving circuit 715, the transmission member 73, the push rod 731, the elastic portion 733, and the electromagnet 735.

Detailed Description

Reference will now be made in detail to embodiments of the present application, 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 by referring to the drawings are exemplary only for the purpose of explaining the embodiments of the present application, and are not to be construed as limiting the embodiments of the present application.

In the description of the embodiments of the present application, it should 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 the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplified description, but 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 should not be construed as limiting the embodiments of the present application. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first" and "second" may explicitly or implicitly include one or more of the described features. In the description of the embodiments of the present application, "a plurality" means two or more unless specifically defined otherwise.

In the description of the embodiments of the present application, it should be noted that the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected unless otherwise explicitly stated or limited; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other suitable relationship. Specific meanings of the above terms in the embodiments of the present application can be understood by those of ordinary skill in the art according to specific situations.

In embodiments of the present application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise the first and second features being in direct contact, or may comprise the first and second features being in contact, not directly, but via another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

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

Referring to fig. 1 to 3, a door lock structure 100 according to an embodiment of the present disclosure includes a locking member 10, a bracket 30, a limiting member 50, and a driving assembly 70. The clamping piece 10 is installed on the door body 200 and comprises a clamping hook 11. The bracket 30 is installed on the box body 300 and includes a limiting portion 31 matched with the hook 11, the hook 11 can penetrate into the bracket 30, and the door body 200 is connected with the box body 300 in an opening and closing manner. The restricting member 50 is rotatably mounted to the bracket 30, and the restricting member 50 is capable of reciprocating between an unlocked position and a locked position. The driving assembly 70 is matched with or separated from the limiting piece 50, the limiting piece 50 is driven to be switched to an unlocking position when the driving assembly 70 is matched with the limiting piece 50, and the limiting piece 50 is switched to be in the locking position due to self weight when the driving assembly 70 is separated from the limiting piece 50; in the unlocking position, the limiting piece 50 avoids the hook 11 so that the hook 11 can move to be separated from or matched with the limiting part 31; in the locking position, the defining piece 50 is adapted to cooperate with the hook 11 to position the hook 11. The door opening mode of the household appliance (such as a cooking appliance) is of a key type, a sliding door type or a touch type, the door can be opened without external force or only by small external force, the whole operation is simple and convenient, and only one step of action is needed, so that children can open the door easily. The door opening mode of the cooking appliance is too simple, the function of a child lock is avoided, and the potential safety hazard that children can open the oven door by themselves to be scalded by high-temperature objects exists in the use process of the cooking appliance.

Referring to fig. 7 to 11, in the door lock structure 100 of the present application, when the driving component 70 is matched with the limiting member 50, the driving component 70 drives the limiting member 50 to switch to the unlocking position, and when the limiting member 50 avoids the hook 11 so that the hook 11 can move to be separated from the limiting portion 31 at the unlocking position, the limiting member 50 releases the limitation on the hook 11, thereby unlocking the hook 11; in the unlocking position, the limiting piece 50 can avoid the hook 11, so that the hook 11 can move to be matched with the limiting portion 31, the falling lock of the hook 11 is realized, and the door 200 is closed in the box 300. When the driving component 70 is disengaged from the limiting piece 50, the limiting piece 50 is switched to the locking position under the self-weight, so that the limiting piece 50 is suitable for being matched with the hook 11 to position the position of the hook 11, the difficulty of separating the hook 11 from the limiting part 31 is increased, and the child lock function is realized. In addition, the limiting piece 50 can lock the hook 11 to the limiting part 31 simply, and the limiting piece 50 can be switched to the locking position under the action of self gravity.

In the embodiment of the present application, the first direction is a direction perpendicular to the ground surface when the household electrical appliance 1000 is still on the horizontal plane, and the second direction is a direction perpendicular to the ground surface.

It should be noted that the locking position may refer to a position where the limiting member 50 is in a self-weight state, as shown in fig. 3, 7 and 9. The unlocking position is the limiting piece 50, which can be a position where the limiting piece 50 can avoid the hook 11 so that the hook 11 can move away from the limiting part 31, or a position where the limiting piece 50 can avoid the hook 11 so that the hook 11 can move to cooperate with the limiting part 31, as shown in fig. 8. The intermediate position includes the restricting member 50 at any one of positions between the locked position and the unlocked position during rotation, as shown in fig. 10 to 11.

The door lock structure 100 will be further described with reference to the accompanying drawings:

referring to fig. 1 and 3, in some embodiments, the clip 10 further includes a main body 13. The body 13 is attached to the door 200. The hook 11 extends from the main body 13, and the hook 11 can cooperate with the limiting portion 31 to lock the clip 10 to the bracket. In the case where the restriction piece 50 releases the restriction of the hook 11, the hook 11 can be disengaged from the stopper portion 31 so that the hook 11 protrudes out of the holder 30.

In some embodiments, the main body 13 and the hook 11 are integrated, so that the structure of the clip 10 is simple. In some embodiments, the main body 13 and the hook 11 are separate structures, and the hook 11 can be mounted on the main body 13 by welding, screwing, clamping, or the like.

In some embodiments, when the hook 11 is separated from the position-limiting portion 31 and the limiting member 50 is located at the locking position due to its own weight, the hook 11 can push the limiting member 50 to rotate to the unlocking position.

Specifically, in the process that the hook 11 penetrates into the bracket 30, the hook 11 abuts against the limiting piece 50 and pushes the limiting piece 50 to rotate freely, so that the limiting piece 50 located at the locking position due to self weight rotates to the unlocking position from the locking position, and when the hook 11 is locked on the limiting part 31, the falling lock of the hook 11 is realized.

In this application, the implementation that limiting piece 50 prescribes a limit to pothook 11 and realize the child lock function is simple, and the thrust exerted when closing door body 200 can cooperate limiting piece 50 and pothook 11 in order to lock pothook 11 in limiting part 31, guarantees that door body 200 can't directly open through the mode of dragging, ensures domestic appliance 1000's the security of opening the door.

In some embodiments, the number of the hooks 11 includes two, and the two hooks 11 are respectively mounted at two ends of the main body 13. Similarly, the number of the limiting parts 31 also includes two, and the two limiting parts are respectively matched with the two hooks 11 to close the door body 200 on the box body 300 (shown in fig. 2).

Referring to fig. 3, in some embodiments, the number of the limiting members 50 may include one, the limiting member 50 is engaged with or disengaged from one of the hooks 11, and the limiting member 50 limits the hook 11 engaged with the limiting portion 31 when engaged with one of the hooks 11, so as to achieve the child lock function.

In other embodiments, the number of the limiting members 50 may include two, wherein one limiting member 50 is engaged with or disengaged from one of the hooks 11, and the other limiting member 50 is engaged with or disengaged from the other hook 11.

Referring to fig. 6, the main body 13 is movably mounted on the door 200. In some embodiments, the door lock structure 100 further includes an elastic member 20, one end of the elastic member 20 is connected to the main body 13, and the other end of the elastic member 20 is connected to the door 200, and the elastic member 20 is configured to continuously provide an elastic force to the latch 10 to move in the first direction.

Specifically, the door body 200 includes a first hook 201 and a kidney-shaped hole 203, the main body 13 includes a moving portion 131 and a second hook 133, and the first hook 201 and the second hook 133 are connected by an elastic member 20. The moving portion 131 is engaged with the kidney hole 203 and can move in the first direction or the second direction within the kidney hole 203.

Specifically, the moving portion 131 extends into the kidney hole 203. In the door closing process, when the hook 11 is matched with the limiting portion 31 and locked on the limiting portion 31 under the action of external force, the moving portion 131 moves in the second direction in the waist-shaped hole 203, stretches the elastic member 20 and deforms, but when the hook 11 moves beyond the end of the limiting portion 31, the elastic member 20 recovers from the stretched state and deforms, so that the moving portion 131 and the hook 11 are driven to move in the first direction, and the hook 11 is locked on the limiting portion 31. In the process of opening the door, the hook 11 moves along the second direction, and meanwhile, the moving portion 131 moves along the second direction in the kidney-shaped hole 203, when the hook 11 moves to the end of the limiting portion 31, the hook 11 can move towards the side away from the bracket 30 along the inclined surface of the limiting portion 31, and meanwhile, the door 200 is opened outwards relative to the box 300.

In some embodiments, the end of the hook 11 has a hook surface 111 that can engage with the stopper 31. When a user applies a pulling force to the door body 200 to open the door body 200, the hook surface 111 of the hook 11 slides along the end of the limiting portion 31 until the end of the hook 11 is higher than the end of the limiting portion 31, so that the door body 200 can be smoothly opened.

In some embodiments, the hook surface 111 is a circular arc surface, so that the hook 11 can be opened by a very small pulling force.

Referring to fig. 4 and 5, in some embodiments, the bracket 30 may further include a body portion 33, a mounting post 35, and a latch 37. The stopper 31, the mounting post 35, and the clip 37 are mounted on the body 33. The mounting post 35 is engaged with the restriction member 50 such that the restriction member 50 is mounted to the body portion 33. The catch 37 serves to limit the displacement of the limiting member 50 mounted on the body portion 33.

The stopper 31 is mounted on the body 33 at a certain angle to form a receiving space 311. When the hook 11 moves to the end of the position-limiting portion 31 along the inclined surface of the position-limiting portion 31 and falls into the accommodating space 311, the hook 11 is locked on the position-limiting portion 31, and the hook 11 is effectively prevented from being separated from the position-limiting portion 31.

Referring to fig. 9 to 11, the mounting post 35 is cylindrical for mounting the limiting member 50, and the cylindrical mounting post 35 enables the limiting member 50 to rotate freely with a small pushing force. When the hook 11 extends into the receiving space 311 along the inclined surface of the position-limiting portion 31, the limiting member 50 in the locked position can rotate around the mounting post 35 by applying a small pushing force to the hook 11, and when the limiting member 50 is pushed to a state just abutting against the hook 11, the hook 11 falls into the receiving space 311 under the action of the elastic member 20. When the hook 11 falls into the receiving space 311, the pushing force of the hook 11 for pushing the limiting piece 50 to rotate to the unlocking position is gradually reduced, and when the hook 11 is separated from the limiting piece 50, the limiting piece 50 rotates from the unlocking position to the locking position under the action of self gravity, so that the hook 11 is limited in the receiving space 311.

In some embodiments, the latch 37 may be made of rubber to facilitate the installation of the limiting member 50.

Referring to fig. 5, the buckle 37 is formed with a receiving groove 371. Part of the structure of the limiting member 50 is defined in the receiving groove 371 to prevent the limiting member 50 from moving in the axial direction of the mounting post 37.

In certain embodiments, the door lock structure 100 further includes a drive assembly 70. The driving component 70 is matched with or separated from the limiting piece 50, when the driving component 70 is matched with the limiting piece 50, the driving component 70 is used for driving the limiting piece 50 to rotate from the locking position to the unlocking position, and under the condition that the limiting piece 50 limits the hook 11 on the hook 11 to be locked on the limiting part 31, the driving component 70 drives the limiting piece 50 to rotate from the locking position to the unlocking position so as to remove the limitation of the limiting piece 50 on the hook 11.

Referring to fig. 4, 5 and 7, in some embodiments, the limiting member 50 includes a body 51, a limiting portion 53 and a matching portion 55. The body 51 is rotatably mounted to the bracket 30. The engaging portion 55 is mounted to a side surface of the body 51 for engaging with the driving assembly 70. The limiting part 53 is mounted on the side surface of the body 51 and is used for limiting the hook 11 on the limiting part 31, the hook 11 can push the limiting part 53 to move to the unlocking position, the weight of the limiting part 53 is greater than that of the matching part 55, and when the driving component 70 is disengaged from the matching part 55, the limiting part 53 moves from the unlocking position to the locking position under the self weight. So as to limit the hook 11 on the limiting portion 31.

The body 51 is provided with a through hole 511, and the through hole 511 is matched with the mounting post 35 to integrally mount the limiting member 50 on the bracket 30. Specifically, the body 51 is sleeved on the mounting post 35 through the through hole 511, so that the limiting portion 53 can rotate relative to the mounting post 35 under a small pushing force, and the connection manner between the body 51 and the mounting post 35 is simple.

The restricting member 50 further includes a blocking portion 57. The blocking portion 57 extends from the body 51 toward one side of the driving assembly 70. The stopper 57 protrudes into the receiving groove 371 formed by the latch 37, and can limit the movement of the limiting member 50 along the axial direction (extending direction) of the mounting post 35 when the limiting member 50 rotates along the mounting post 35. In the application, the limiting piece 50 is rotatably fixed on the bracket 30 through the matching of the through hole 511 and the mounting column 35 and the limitation of the blocking part 57 and the buckle 37, the connection mode is simple, and the disassembly and replacement are convenient. In addition, the limiting piece 50 is not required to be installed on the bracket 30 through screws, welding and the like, so that the limiting piece 50 is not required to be driven to rotate through the rotation of an additional driving motor, and the rotation of the limiting piece 50 is simple to realize.

In some embodiments, the blocking portion 57 is connected to the matching portion 55 and extends from the matching portion 55 along the extending direction of the side surface of the body 51 to a certain length at the side surface of the body 51, and the extending length of the blocking portion 57 along the extending direction of the side surface of the body 51 can be set according to the rotating angle of the limiting member 50, for example, the arc length of the limiting member 50 after rotating to a certain angle can be calculated by using the arc length formula, and then the extending length of the blocking portion 57 can be determined according to the arc length. Specifically, the extension length of the blocking portion 57 is greater than or equal to the arc length, so that the limiting function between the blocking portion 57 and the buckle 37 is always existed in the limiting member 50 during the rotation process, the limiting member 50 is prevented from moving along the axial direction of the mounting post 37 during the rotation process, and the limiting member 50 is prevented from being separated from the bracket 30.

Referring to fig. 3 or fig. 7, when the limiting member 53 is in the locking position and is limiting the rotation of the hook 11, the limiting member 53 may abut against the surface of the hook 11, or a certain gap exists between the limiting member 53 and the surface of the hook 11, and the gap is smaller than the distance that the hook 11 moves in the second direction away from the accommodating space 311.

In some embodiments, the cross section of the limiting piece 53 is fan-shaped, and the end of the limiting piece 53 includes a cambered surface which is in contact fit with the hook 11 to position the hook 11. When the limiting piece 50 is in the locking position and the hook 11 is engaged with the limiting portion 31, the arc surface is engaged with the surface of the hook 11. In other embodiments, the cross section of the limiting piece 53 is circular or square, and at this time, a gap exists between the limiting piece 53 and the surface of the hook 11, so that the limiting piece 53 can rotate from the locking position to the unlocking position.

Specifically, the limiting portion 53 limits the hook 11 to be locked in the accommodating space 311 of the limiting portion 31, and when the door body 200 needs to be opened, the driving assembly 70 drives the matching portion 55 to rotate, and the matching portion 55 drives the limiting portion 53 to rotate from the locking position to the unlocking position. When the limiting part 53 rotates from the locking position to the unlocking position on the surface of the hook 11, the end part of the limiting part 53 is fan-shaped or circular, and the limiting part 53 with the fan-shaped or circular end part is slightly spaced from the hook 11 relative to the square end part of the limiting part 53, so that the limiting part 53 can rotate from the locking position to the unlocking position on the surface of the hook 11 under the driving of the driving assembly 70 to release the limitation on the hook 11.

In some embodiments, the angle between the side of the defining portion 53 adjacent to the limiting portion 31 and the side of the mating portion 55 facing the limiting portion 31 is less than 180 °.

In addition, the weight of the limiting part 53 is greater than that of the matching part 55, so that the limiting part 53 can rotate from the unlocking position to the locking position under the self weight, the driving assembly 70 is not required to drive the limiting part 53 to rotate from the unlocking position to the locking position, the automatic locking of the limiting part 53 is realized, meanwhile, the power consumption of the household appliance 1000 can be effectively reduced, and the household appliance 1000 is more energy-saving.

Referring to fig. 4, in some embodiments, the driving assembly 70 includes a driving member 71 and a transmission member 73 connected to the driving member 71. The driver 71 is mounted to the bracket 30. The transmission member 73 is used for being matched with the limiting member 50, and the driving member 71 is used for driving the transmission member 73 to be matched with or separated from the limiting member 50.

Referring to fig. 7, specifically, the transmission member 73 corresponds to the engaging portion 55, and the driving member 71 is used for driving the transmission member 73 to engage with or disengage from the engaging portion 55.

In one embodiment, the driving member 71 includes an electromagnet 711, and the transmission member 73 includes a push rod 731 and an elastic portion 733. The push rod 731 passes through the electromagnet 711. The elastic portion 733 is sleeved on the push rod 731, and two ends of the elastic portion 733 respectively abut against the tails of the electromagnet 711 and the push rod 731. When the electromagnet 711 is energized, the electromagnet 711 drives the push rod 731 to move in the first direction to push the limiting member 50 to rotate to the unlocking position. When the electromagnet 711 is powered off, the elastic portion 733 generates a restoring force, and the restoring force drives the push rod 731 to move along a second direction, so that the limiting member 50 rotates to the locking position due to self-weight, wherein the first direction is opposite to the second direction.

Referring to fig. 7 and 8, in the embodiment of the present application, an included angle between a side surface of the limiting portion 53 close to the limiting portion 31 and a side surface of the matching portion 55 facing the limiting portion 31 is smaller than 180 °, and the driving member 71 only needs to drive the transmission member 73 to perform a linear motion along the first direction or the second direction, so that the transmission member 73 can drive the matching portion 55 to rotate, and the limiting member 50 has a simple structure and a low manufacturing cost.

Referring to fig. 4 and 5, in detail, the main body 33 of the bracket 30 is provided with a mounting hole 331, the driving member 71 is provided with a fixing hole 713, the mounting hole 331 is matched with the fixing hole 713, and the driving member 70 is integrally mounted on the main body 33 by a screw connection.

The body portion 33 further includes a support plate 333, and the driving member 70 is integrally placed on the support plate 333 to support the driving member 70. A portion of the support plate 333 corresponding to the push rod 731 is formed with an opening 335. The push rod 731 is moved in the first or second direction through the opening 335 to be engaged with or disengaged from the engaging portion 55 by the driving of the driving member 71.

Referring to fig. 9 to 11, when the electromagnet 711 is not energized, an end of the push rod 731 away from the engaging portion 55 extends out of the electromagnet 711, and an end of the push rod 731 close to the engaging portion 55 is spaced from the engaging portion 55. When the limiting portion 53 rotates from the unlocking position to the locking position (the limiting portion 53 is switched from the state shown in fig. 8 to the state shown in fig. 9) under the action of the gravity of the limiting portion 53, the matching portion 55 does not collide with the push rod 731, and when the hook 11 falls into the accommodating space 311 of the limiting portion 31, the limiting portion 53 can limit the hook 11 in the accommodating space 311 in the initial state, so that the door body 200 cannot be directly opened by pulling, and the door opening safety of the household appliance 1000 (shown in fig. 1) is ensured.

Referring to fig. 7 and 8, when the door 200 (shown in fig. 1) needs to be opened, the household appliance 1000 continuously supplies power to the electromagnet 711 for 10 seconds, the electromagnet 711 generates suction to push the push rod 731 out of the side where the matching portion 55 is located, the push rod 731 pushes the matching portion 55 to rotate along the first direction, the matching portion 55 drives the limiting portion 53 to rotate towards the unlocking position, when the limiting portion 53 rotates to the unlocking position, the hook 11 is released from limiting, an external force is applied to the door 200, so that the hook 11 protrudes from the accommodating space 311, the limiting portion 53 abuts against the side surface of the hook 11, at this time, the household appliance 1000 stops supplying power to the electromagnet 711, and the door 200 can be opened by continuously applying the external force. So, when making domestic appliance 1000 increase child's lock function, can also effectively reduce domestic appliance 1000's power consumption for domestic appliance 1000 is more energy-conserving.

Referring to fig. 12, in another embodiment, the driving member 71 further includes a driving circuit 715, the driving member 73 includes an electromagnet 735 (the structure of the electromagnet is the same as that of the electromagnet 711 of the driving member 71), and when the driving circuit 715 supplies power to the electromagnet 735, the electromagnet 735 and the limiting member 50 repel each other, so that the limiting member 50 rotates to the unlocking position; when the drive circuit stops supplying power to the electromagnet, the repulsive force between the electromagnet and the restricting member 50 disappears, and the restricting member 50 falls back from the unlock position to the lock position by its own weight.

The drive circuit 713 is used to switch the electromagnet 735 between an energized and a de-energized state. The limiting piece 50 is a magnetic material such as a metal piece or an alloy piece with magnetism; alternatively, the restricting member 50 is provided with a magnetic unit for generating a repulsive force with the electromagnet 735. Specifically, the fitting portion 55 of the restriction member 50 is a magnetic material; or the fitting portion 55 is provided with a magnetic unit.

When the driving circuit 715 supplies power to the electromagnet 735, the electromagnet 735 generates magnetic force, the magnetic force of the electromagnet 735 is the same as that of the matching portion 55, so that a repulsive force is generated to act on the matching portion 55, the matching portion 55 and the electromagnet 735 repel each other, the matching portion 55 is pushed to rotate in the counterclockwise direction until the limiting portion 55 rotates to the maximum stroke position rotating in the counterclockwise direction, and the limiting portion 53 releases the limitation of the hook 11. With the electromagnet 735 continuously energized, the repulsive force of the electromagnet 735 keeps the restricting member 50 in the unlocked position.

When the driving circuit 715 stops supplying power to the electromagnet 735, the magnetic force of the electromagnet 735 disappears, the electromagnet 735 no longer generates a repulsive force to the engaging portion 55, and the restricting member 50 rotates back to the lock position by gravity.

In some embodiments, in the case where the drive circuit 715 supplies power to the electromagnet 735, the magnetic force generated by the electromagnet 735 drives the restricting member 50 to rotate to the unlocked position. When the drive circuit 715 stops supplying power to the electromagnet 735, the magnetic force of the electromagnet 735 disappears, and the restricting member 50 falls back from the unlock position to the lock position by its own weight.

In one embodiment, the driving circuit 715 and the electromagnet 735 are disposed transversely with respect to the bracket 30, the matching portion 55 is disposed at a proper position of the limiting member 50 (for example, compared with fig. 12, the matching portion 55 is disposed at the right side instead), the electromagnet 735 is disposed at the left side of the matching portion 55, when the driving circuit 715 supplies power to the electromagnet 735, the electromagnet 735 generates magnetic force, the magnetic force of the electromagnet 735 is different from the magnetic force of the matching portion 55 of the limiting member 50, and the electromagnet 735 generates mutually attracted magnetic force to attract the matching portion 55 to rotate counterclockwise, so as to drive the limiting member 53 to rotate counterclockwise to the unlocking position. With the electromagnet 735 continuously energized, the attraction force of the electromagnet 735 holds the restricting member 50 in the unlocked position.

When the driving circuit 715 stops supplying power to the electromagnet 735, the magnetic force of the electromagnet 735 disappears, the electromagnet 735 no longer generates an attractive force to act on the engaging portion 55, and the restricting member 50 rotates back to the lock position by gravity.

In another embodiment, the driving circuit 715 and the electromagnet 735 are disposed transversely with respect to the bracket 30, the engaging portion 55 is disposed at a suitable position of the limiting member 50 (for example, compared with fig. 12, the engaging portion 55 is disposed at the right side instead), the electromagnet 735 is disposed at the right side of the engaging portion 55, when the driving circuit 715 supplies power to the electromagnet 735, the electromagnet 735 generates magnetic force, the magnetic force of the electromagnet 735 is the same as the magnetic force of the engaging portion 55 of the limiting member 50, and the electromagnet 735 generates mutually repulsive magnetic force to push the engaging portion 55 to rotate counterclockwise, so as to drive the limiting member 53 to rotate counterclockwise to the unlocking position. With the electromagnet 735 continuously energized, the repulsion force of the electromagnet 735 holds the restricting member 50 in the unlocked position.

Referring to fig. 1 and fig. 2, a household appliance 1000 is further provided in the present embodiment. The household appliance 1000 includes a door 200, a cabinet 300 and the door lock structure 100 of any of the above embodiments. The door 200 is connected to the cabinet 300 in an opening and closing manner. The bracket 30 and the driving assembly 70 are installed in the cabinet 300, and the engaging member 10 is installed in the door 200.

The household appliance 1000 may include, but is not limited to, a microwave oven, a steam oven, an electric oven, and the like. The door 200 may be mounted to the cabinet 300 by a hinge connection.

Referring to fig. 3, in some embodiments, the household appliance 1000 further includes a control box 400 and an on-off key 500. The control box 400 is disposed on the door 200 or the cabinet 300, and is electrically connected to the driving assembly 70. The switch key 500 is provided in the control box 400. The switch key 500 is used for triggering an unlocking instruction, and the control box 400 controls the driving assembly 70 to be powered on according to the unlocking instruction; and/or the switch key 500 is used for triggering a locking instruction, and the control box 400 controls the power-off of the driving assembly 70 according to the locking instruction.

Referring to fig. 7 and 8, when the door is opened, the switch key 500 is triggered to trigger the unlocking command, the control box 400 controls the driving component 70 to be powered on according to the unlocking command, so that the transmission member 73 pushes the matching portion 55 to rotate, and the matching portion 55 drives the limiting portion 53 to rotate from the locking position to the unlocking position, so as to release the limitation of the limiting portion 53 on the hook 11. The household appliance 1000 can set the time for electrically connecting the control box 400 and the driving member 71, and when the time for electrically connecting the control box 400 and the driving member 71 reaches a predetermined time, the electrical connection between the control box 400 and the driving member 71 is released.

Referring to fig. 9 to 11, when the door is closed, the switch key 500 is triggered to trigger the locking command, the control box 400 controls the driving component 70 to be powered off according to the locking command, the transmission member 71 moves along the second direction to release the engagement with the engagement portion 55, and the limiting portion 53 rotates from the unlocking position to the locking position under its own weight, so that the limiting portion 53 limits the hook 11 in the accommodating space 311 of the limiting portion 31, thereby achieving the child lock function.

In some embodiments, the household appliance 1000 further comprises a micro switch (not shown) and a microwave generator (not shown). The micro switch is disposed on the bracket 30 and electrically connected to the control box 400. The microwave generator is disposed in the case 300 and electrically connected to the control box 400. When the micro switch detects that the hook 11 is disengaged from the limiting part 31, the control box 400 controls the microwave generator to stop working.

In the use process of the household appliance 1000, the control box 400 and the micro switch are continuously powered on to detect whether the hook 11 is disengaged from the limiting part 31 in real time, when the micro switch detects that the hook 11 is disengaged from the limiting part 31, a control signal can be sent to the control box 400, the control box 400 controls the microwave generator to stop working according to the control signal, and when the door body 200 is prevented from being disengaged from the box body 300, the microwave inside the box body 300 is prevented from leaking.

Referring to fig. 13, an embodiment of the present application further provides a control method of a household appliance 1000, where the control method includes:

01: when the door body 200 is in a closed state and the door body 200 needs to be opened, controlling the power on of the driving assembly 70 according to the unlocking instruction, and matching the driving assembly 70 with the limiting piece 50 to drive the limiting piece 50 to be switched to the unlocking position;

03: when the door body 200 is opened for a preset time, the driving assembly 70 is controlled to be powered off.

The door opening process of the household appliance 1000 is as follows:

referring to fig. 7 and 8, when the switch 500 on the door 200 is pressed, the switch 500 sends an unlocking instruction to the control box 400, the control box 400 continuously supplies power to the electromagnet 711 for 10 seconds after receiving the unlocking instruction, the electromagnet 711 generates suction force to enable the push rod 731 to move in the first direction and push out from the electromagnet 711, and the elastic portion 733 fixed between the push rod 731 and the electromagnet 711 is in a compressed state. The protruding push rod 731 pushes the engaging portion 55 to rotate in the counterclockwise direction, and the engaging portion 55 drives the limiting portion 53 to rotate in the counterclockwise direction from the locking position to the unlocking position. The restriction portion 53 releases the restriction of the hook 11, and the door 200 can be freely opened by applying an external force to the door 200. After the electromagnet 711 supplies power for 10 seconds, the suction force of the electromagnet 711 disappears, the elastic part 733 recovers from the compression state and deforms, the push rod 731 is driven to move along the second direction, and the limiting piece 53 rotates from the unlocking position to the locking position under the action of gravity.

The door closing process of the household appliance 1000 is as follows:

referring to fig. 9 to 12, when a pushing force is applied to the door 200, the door 200 moves toward the inside of the bracket 30, the hook 11 moves along the limiting portion 31 and exceeds the end of the limiting portion 31, the hook 11 abuts against the limiting portion 53 located at the locking position, and in the process of pushing the hook 11 to fall into the accommodating space 311, the hook 11 pushes the limiting portion 53 to rotate in the counterclockwise direction until the hook 11 extends into the accommodating space 311, the limiting portion 53 is separated from the support of the hook 11, the limiting portion 53 rotates from the unlocking position to the locking position in the clockwise direction under the self-gravity, so as to limit the hook 11 in the accommodating space 311, thereby ensuring that the door 200 cannot be directly opened by pulling, and ensuring the safety of opening the door of the household appliance 1000.

In the door lock structure 100, the household appliance 1000 and the control method of the household appliance 1000 of the present application, when the driving assembly 70 is matched with the limiting member 50, the driving assembly 70 drives the limiting member 50 to switch to the unlocking position, and when the limiting member 50 avoids the hook 11 so that the hook 11 can move to be separated from the limiting part 31 at the unlocking position, the limiting member 50 releases the limitation on the hook 11, thereby realizing the unlocking of the hook 11; in the unlocking position, the limiting piece 50 can avoid the hook 11, so that the hook 11 can move to be matched with the limiting portion 31, the falling lock of the hook 11 is realized, and the door 200 is closed in the box 300. When the driving component 70 is disengaged from the limiting piece 50, the limiting piece 50 is switched to the locking position under the self-weight, so that the limiting piece 50 is suitable for being matched with the hook 11 to position the position of the hook 11, the difficulty of separating the hook 11 from the limiting part 31 is increased, and the child lock function is realized. In addition, the limiting piece 50 can lock the hook 11 to the limiting part 31 simply, and the limiting piece 50 can be switched to the locking position under the action of self gravity. In the description herein, references to the description of the terms "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example" or "some examples" or the like mean 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 application. 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.

Although embodiments of the present application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present application, and that variations, modifications, substitutions and alterations of the above embodiments may be made by those of ordinary skill in the art within the scope of the present application.

Claims

1. A door lock structure, comprising:

the clamping piece is arranged on the door body and comprises a clamping hook;

the door body is connected with the box body in an opening and closing mode;

a limiting member rotatably mounted on the bracket, the limiting member being capable of reciprocating between an unlocked position and a locked position;

the driving assembly is matched with or disengaged from the limiting piece, the limiting piece is driven to be switched to the unlocking position when the driving assembly is matched with the limiting piece, and the limiting piece is switched to the locking position due to self weight when the driving assembly is disengaged from the limiting piece;

in the unlocking position, the limiting piece avoids the hook so that the hook can move to be separated from or matched with the limiting part;

in the locking position, the limiting piece is suitable for being matched with the hook to position the position of the hook.

2. The door lock structure according to claim 1, wherein the hook is separated from the position-limiting portion, and when the limiting member is located at the lock position due to its own weight, the hook can push the limiting member to rotate to the unlock position.

3. The door lock structure according to claim 2, wherein the defining member comprises:

a body rotatably mounted to the bracket;

the matching part is arranged on the side surface of the body and is used for matching with the driving component; and

the limiting part is arranged on the side surface of the body and used for limiting the clamping hook on the limiting part, and the clamping hook can push the limiting part to move to the unlocking position; the limiting part is heavier than the matching part, and when the driving assembly is disengaged from the matching part, the limiting part moves from the unlocking position to the locking position under the self weight.

4. The door lock structure of claim 3, wherein the bracket includes a mounting post and a latch, the limiting member further includes a blocking portion disposed on a side surface of the body, the body is sleeved on the mounting post so that the limiting member can rotate relative to the mounting post, and the blocking portion is configured to interfere with the latch to limit axial movement of the body along the mounting post.

5. The door lock structure according to claim 3, wherein an end of the defining portion includes an arc surface which is in contact engagement with the hook to position the hook in the locking position.

6. The door lock structure according to claim 1, wherein the driving assembly further comprises:

a driving member mounted to the bracket; and

the driving piece is used for driving the driving piece to be matched with or not matched with the limiting piece.

7. The door lock structure according to claim 6, wherein the driving member includes an electromagnet; the transmission member includes:

the push rod penetrates through the electromagnet; and

the elastic part is sleeved on the push rod, and two ends of the elastic part respectively abut against the electromagnet and the tail part of the push rod;

under the condition that the electromagnet is electrified, the electromagnet drives the push rod to move along a first direction so as to push the limiting piece to rotate to the unlocking position; under the condition that the electromagnet is powered off, the elastic part generates restoring force, the restoring force drives the push rod to move along a second direction so as to enable the limiting piece to rotate to the locking position due to self weight, and the first direction is opposite to the second direction.

8. The door lock structure according to claim 6, wherein the driving member includes a driving circuit, the transmission member includes an electromagnet,

under the condition that the driving circuit supplies power to the electromagnet, the magnetic force generated by the electromagnet drives the limiting piece to rotate to the unlocking position;

and under the condition that the driving circuit stops supplying power to the electromagnet, the magnetic force of the electromagnet disappears, and the limiting piece falls back to the locking position from the unlocking position due to self weight.

9. The door lock structure according to claim 8,

the limiting piece is a metal piece or an alloy piece with magnetism; or

The limiting piece is provided with a magnetic unit, and the magnetic unit is used for generating magnetic force matching with the electromagnet.

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

a door body;

the box body is connected with the door body in an opening and closing manner; and

the door lock structure of any one of claims 1 to 9, wherein the bracket and the driving assembly are mounted on the box body, and the engaging member is mounted on the door body.

11. The household appliance of claim 10, further comprising:

the control box is arranged on the door body or the box body and is electrically connected with the driving assembly; and

the switch key is arranged on the control box; wherein the content of the first and second substances,

the switch key is used for triggering an unlocking instruction, and the control box controls the drive assembly to be electrified according to the unlocking instruction; and/or

The on-off key is used for triggering a locking instruction, and the control box controls the driving assembly to be powered off according to the locking instruction.

12. The household appliance according to claim 11, further comprising:

the microswitch is arranged on the bracket and is electrically connected with the control box; and

the microwave generator is arranged in the box body and is electrically connected with the control box;

and under the condition that the micro switch detects that the clamping hook is not matched with the limiting part, the control box controls the microwave generator to stop working.

13. A control method of a home appliance according to any one of claims 10 to 12, characterized in that the control method comprises:

when the door body is in a closed state and needs to be opened, the driving assembly is controlled to be electrified according to an unlocking instruction, and the driving assembly is matched with the limiting piece to drive the limiting piece to be switched to the unlocking position.

14. The control method according to claim 13, characterized by further comprising:

and when the door body is opened for a preset time, controlling the driving assembly to be powered off.