CN114673408A

CN114673408A - Door lock structure, household appliance and control method of household appliance

Info

Publication number: CN114673408A
Application number: CN202210283804.1A
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: 2022-06-28

Abstract

The application discloses a door lock structure, a household appliance and a control method of the household appliance. The door lock structure includes: 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 openable and closable manner; the limiting piece is rotatably arranged on the bracket and can reciprocate between an unlocking position and a locking position; the driving component is used for being matched with or disengaged from the limiting piece; when the driving assembly is matched with the limiting piece, the limiting piece is driven to rotate to a locking position, and when the driving assembly is disengaged from the limiting piece, the limiting piece rotates to an unlocking position due to self weight; when the limiting piece is positioned at the locking position, the limiting piece limits the moving range of the hook so as to avoid the hook in a matching state from separating from the limiting plate; when the limiting piece is located at the unlocking position, the limiting piece avoids the hook. The step of the action of opening the door of the household appliance is added in the embodiment of the application, and the phenomenon that the action of opening the door is easily operated by mistake can be effectively avoided.

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 existing door opening modes of the household appliance comprise a key type, a sliding door type and a touch type, the door can be opened without external force or only by small external force, and the whole operation is simple and convenient and only has one step of action. Household appliances usually work in a high-temperature environment, and potential safety hazards may occur if the door is opened by mistake.

Disclosure of Invention

The application embodiment provides a door lock structure, a household appliance and a control method of the household appliance, which increase the door opening process and avoid potential safety hazards caused by mistaken door opening.

The embodiment of the application provides a door lock structure. The door lock structure includes: 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 openable and closable manner; a limiting member rotatably mounted on the bracket and capable of reciprocating between an unlocking position and a locking position; the driving component is used for being matched with or not matched with the limiting piece; when the driving assembly is matched with the limiting piece, the limiting piece is driven to rotate to the locking position, and when the driving assembly is not matched with the limiting piece, the limiting piece rotates to the unlocking position due to self weight; when the limiting piece is positioned at the locking position, the limiting piece limits the moving range of the hook so as to avoid the hook in a matching state from separating from the limiting plate; when the limiting piece is located at the unlocking position, the limiting piece avoids the clamping hook.

In certain embodiments, the defining member comprises: a body rotatably mounted to the bracket;

a mating portion extending from the first end of the body, the mating portion for mating with the drive assembly; and the limiting part extends from the second end of the body, the weight of the limiting part is greater than that of the matching part, and under the condition that the driving assembly is not matched with the limiting part, the limiting part falls back to the unlocking position from the locking position due to 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 sidewall 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 buckle to limit axial movement of the body along the mounting post.

In some embodiments, the door lock structure further comprises a reset piece, the reset piece is respectively connected with the clamping piece and the door body, and the elastic direction of the reset piece is parallel to the clamping direction of the clamping hook and the limiting plate.

In some embodiments, when the hook is separated from the position-limiting plate and the limiting member is in the locking position, when a first acting force applied to the clamping member from the outside is greater than a second acting force applied to the limiting member by the driving assembly, the hook overcomes the resistance of the limiting member to cooperate with the position-limiting plate.

In some embodiments, the driving assembly includes a driving member and a transmission member, the transmission member is configured to engage with the limiting member, and the driving member is configured to drive the transmission member to engage with or disengage from the limiting member.

In certain embodiments, the drive member comprises an electromagnet; the transmission member includes: the push rod penetrates through the electromagnet; 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 head of the push rod to move along a first direction so as to push the limiting piece to rotate to the locking position, and the elastic part is elastically deformed; under the condition that the electromagnet is powered off, the elastic part generates restoring force, the restoring force drives the head of the push rod to move along a second direction, the limiting piece is disengaged from the head of the push rod, the limiting piece falls back to the unlocking position from the locking position due to dead weight, and the second direction is opposite to the first direction.

In some embodiments, the driving member comprises a driving circuit, the transmission member comprises an electromagnet, and the limiting member is driven to rotate to the locking position by the 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 unlocking position from the locking 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.

In some embodiments, the driving assembly further includes a fixing hole, the bracket further includes a mounting hole, and the door lock structure further includes a screw, the screw is inserted through the fixing hole and is matched with the mounting hole to fix the driving assembly to the bracket.

The embodiment of the application provides a household appliance. The household appliance comprises a door body, a box body and the door lock structure in the embodiment, the clamping piece is arranged on the door body, and the support and the driving component piece are arranged on the box body.

In some embodiments, the household appliance further comprises: 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 driving component to be powered off 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 electrified according to the locking instruction.

In some embodiments, the home appliance further comprises: the microswitch 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 plate, the control box controls the microwave generator to stop working.

The embodiment of the application provides a control method of a household appliance. The household appliance comprises a door body, a box body and the door lock structure in the embodiment, the clamping piece is arranged on the door body, and the support and the driving component piece are arranged on the box body. The control method comprises the following steps: under the condition that the driving assembly is matched with the limiting piece, so that the limiting piece is positioned at the locking position, controlling the driving assembly to be powered off according to an unlocking instruction; and/or controlling the driving assembly to be electrified according to a locking instruction under the condition that the driving assembly is disengaged from the limiting piece so that the limiting piece is positioned at the unlocking position.

In some embodiments, the control method further comprises: after the unlocking instruction is received and preset time passes, controlling the driving assembly to drive the limiting piece to move from the unlocking position to the locking position; or after the unlocking instruction is received and preset time is passed, and the condition that the door body is closed is detected, the driving assembly is controlled to drive the limiting piece to move from the unlocking position to the locking position.

In certain embodiments, the control method further comprises: and after the unlocking instruction is received and second preset time passes, controlling the driving assembly to be electrified when the clamping hook is detected to be matched with the limiting plate.

According to the door lock structure, the household appliance and the control method of the household appliance, the driving assembly needs to be operated before the door body is opened, the step of the door opening action of the household appliance is increased, the door opening action can be effectively prevented from being easily operated by mistake, and the use safety of the household appliance is improved.

Additional aspects and advantages of embodiments of the present 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 embodiments of the present application.

Drawings

The above 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 furnace body according to certain embodiments of the present application;

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

FIG. 4 is a schematic structural view of a door lock structure according to certain embodiments of the present application;

FIG. 5 is a schematic structural view of a door lock structure according to certain embodiments of the present application;

FIG. 6 is a schematic structural view of a door lock structure according to certain embodiments of the present application;

FIG. 7 is an enlarged schematic view of area A2 of FIG. 2;

FIG. 8 is a perspective view of an interlock bracket, a limiting member, and a drive assembly according to certain embodiments of the present disclosure;

FIG. 9 is a schematic structural view of a drive assembly according to certain embodiments of the present application;

FIG. 10 is a schematic structural view of a door lock structure according to certain embodiments of the present application;

FIG. 11 is a schematic structural view of a door lock structure according to certain embodiments of the present application;

fig. 12 is a flowchart illustrating a control method of a home appliance according to some embodiments of the present disclosure.

Description of the main element symbols:

the household appliance comprises a household appliance 1000, a door lock structure 100, a door body 200, a kidney-shaped hole 201, a first hook 202, a mounting hole 205, a box body 300, a control box 310, a switch key 311, a microswitch 320, a microwave generator 330 and a reset piece 400;

the clamping device comprises a clamping piece 10, a clamping hook 11, a moving part 12 and a second hook 13;

the support 20, the limit plate 21, the inclined surface 211, the accommodating space 22, the mounting column 25, the buckle 26 and the wall surface 27;

The driving component 30, the driving piece 31, the fixing hole 311, the electromagnet 312, the driving circuit 314, the transmission piece 32, the push rod 321, the head portion 3211, the tail portion 3212, the elastic portion 322, the electromagnet 324 and the lead 313;

the limiting piece 40, the body 41, the first end 411, the second end 412, the side wall 413, the matching part 42, the limiting part 43 and the blocking part 44.

Screw 60

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 explaining the embodiments of the present application, and are not construed as limiting the embodiments of the present application.

In the description of the present application, it is to be understood that the terms "thickness," "upper," "top," "bottom," "inner," "outer," etc. indicate an orientation or positional relationship based on that shown in the drawings, which is for convenience in describing and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the present application. And 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 to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and in one example may be fixedly connected, detachably connected, or integrally connected; may be mechanically or electrically connected, or may be in communication with each other; may be directly connected or indirectly connected through intervening media, and may be connected internally or in interactive relation with other elements.

Referring to fig. 1, a household appliance 1000 is provided in the present embodiment. Referring to fig. 2 and 3, the household appliance 1000 includes a door lock structure 100, a box 300 and a door 200. The door 200 is connected with the cabinet 300, and the door 200 is connected with the cabinet 300 in an openable and closable manner.

In some embodiments, the household appliance 100 includes an oven, a microwave oven, a refrigerator, and the like, which are not enumerated herein.

Referring to fig. 4, a door lock structure 100 is provided in the present embodiment. Referring to fig. 1 to 3, the door lock structure 100 can be applied to a household appliance 1000 to tightly lock a door 200 of the household appliance 1000 to a cabinet 300. The door lock structure 100 includes a latch 10, a bracket 20, a limiting member 40 and a driving assembly 30.

Referring to fig. 4, the fastening member 10 is mounted on the door 200, and the fastening member 10 includes a fastening hook 11. The bracket 20 is mounted on the case 300, and the bracket 20 is provided with a limit plate 21 engaged with the hook 11. In a state that the door 200 is closed, the hook 11 can penetrate into the bracket 20 and cooperate with the limit plate 21 to prevent the door 200 from being opened.

Referring to fig. 4 and 5, the limiting member 40 is rotatably mounted to the bracket 20 and can reciprocate between an unlocking position and a locking position.

In the embodiment illustrated in fig. 4, the restricting member 40 is in the locked position. Under the condition that the limiting member 40 is at the locking position, the limiting member 40 limits the moving range of the hook 11 to avoid the hook 11 in the matching state from separating from the limiting plate 21, thereby preventing the door body 200 from opening.

In the embodiment illustrated in fig. 5, the restricting member 40 is not subjected to an external force and is in the unlocking position. When the limiting piece 40 is located at the unlocking position, the limiting piece 40 is located outside the path of the hook 11 departing from the bracket 20, so that the limiting piece 40 is avoided from the hook 11, and the hook 11 can be separated from the limiting plate 21 to open the door body 200.

Referring to fig. 4, the driving assembly 30 is used to engage or disengage the limiting member 40. With the drive assembly 30 engaged with the restricting member 40, the drive assembly 30 drives the restricting member 40 to rotate from the unlocked position to the locked position. Referring to fig. 5, when the driving assembly 30 is disengaged from the limiting member 40, the limiting member 40 rotates from the locking position to the unlocking position due to its own weight. Thus, by controlling the driving assembly 30 to be matched with or separated from the limiting piece 40, the limiting piece 40 can be selectively kept at the locking position to limit the moving range of the hook 11, so that the hook 11 is kept matched with the limiting plate 21; and, the limiting member 40 is in the unlocking position to avoid the hook 11, so that the hook 11 can be separated from the limiting plate 21.

Referring to fig. 1 to 4, when the hook 11 is caught on the position-limiting plate 21, the door 200 is closed on the box 300, and the driving assembly 30 drives the limiting member 40 to keep the locking position, so as to prevent the hook 11 from separating from the position-limiting plate 21, thereby preventing a user, especially a child accompanying an adult, from mistakenly opening the door 200.

Referring to fig. 5, when the door 200 needs to be opened, the driving assembly 30 is disengaged from the limiting member 40, and the limiting member 40 rotates from the locking position to the unlocking position due to its own weight, so that the limiting member 40 is retracted from the hook 11. When the limiting piece 40 is located at the unlocking position where the limiting piece can be retracted from the hook 11, the door 200 can be pulled, so that the hook 11 is separated from the limiting plate 21 and moves from the inside of the bracket 20 to the outside of the bracket 20, and the door 200 can be opened from the cabinet 300.

Through the door lock structure 100 of the embodiment of the application, the driving assembly 30 needs to be operated before the door body 200 is opened, so that the steps of the door opening action of the household appliance 1000 are increased, the door opening action can be effectively prevented from being easily operated by mistake, and the use safety of the household appliance 1000 is improved.

Referring to fig. 4, in some embodiments, the accommodating space 22 is formed in the bracket 20, and the limiting plate 21 disposed on the bracket 20 includes an inclined surface 211. In the process of closing the door, the hook 11 moves towards the accommodating space 22 along the inclined surface 211 of the limiting plate 21, when the hook 11 moves beyond the end of the inclined surface 211 close to the direction of the accommodating space 22, the hook 11 falls into the accommodating space 22, one side of the accommodating space 22 is blocked by the limiting plate 21, and the hook 11 is clamped on the limiting plate 11, so that the hook 11 cannot directly move along the direction of X1 to separate from the bracket 20.

If the door 200 is to be opened, the hook 11 needs to be lifted along the second direction L2 to disengage the hook 11 from the position-limiting plate 21, so that the hook 11 moves away from the accommodating space 22, which is the path along which the hook 11 disengages from the position-limiting plate 21. After the hook 11 leaves the receiving space 22, it can move along the first direction L1 to disengage from the bracket 20. When the hook 11 is disengaged from the bracket 20, the door 200 can be opened with respect to the cabinet 300.

In other embodiments, the structure of the bracket 20 may not be the same as that shown in fig. 4, but there is still a path for the hook 11 to escape from the stopper plate 21. The limiting piece 40 is used for blocking the disengaging path under the locking position so as to prevent the hook 11 from disengaging from the limiting plate 21; and releasing the blocking of the escape path in the unlock position so that the hook 11 can be freely escaped from the limit plate 21.

Referring to fig. 4, in some embodiments, when the limiting member 40 is located at the locking position, the limiting member 40 is located above the accommodating space 22 to limit the moving range of the hook 11, so as to prevent the hook 11 from leaving the accommodating space 22, and keep the hook 11 engaged with the limiting plate 21.

Referring to fig. 6, in some embodiments, when the door 200 is opened, the hook 11 is separated from the position-limiting plate 21, and the driving assembly 30 cooperates with the limiting member 40 to make the limiting member 40 located at the locking position. When the first acting force is applied to close the door 200, if the applied first acting force is greater than the second acting force applied to the limiting member 40 by the driving assembly 30, the hook 11 can overcome the resistance of the limiting member 40 to push the limiting member 40 to rotate to the unlocking position, so that the hook 11 can move to the accommodating space 22 and be matched with the limiting plate 21.

Referring to fig. 3 and 4, in some embodiments, the door body 200 includes a kidney-shaped hole 201 and a first hook 202, and the locking member 10 includes a moving portion 12 and a second hook 13. The first hook 202 and the second hook 13 are connected by a restoring member 400. The moving unit 12 extends into the waist-shaped hole 201 and can move in the waist-shaped hole 201 in the Y1 direction or the Y2 direction. Referring to fig. 2, in the process of closing the door, the hook 11 gradually extends into the bracket 20 along the inclined surface 211 of the limiting plate 21, and meanwhile, the moving portion 12 is lifted in the waist-shaped hole 201 along the Y1 direction, and stretches the reset piece 400 to generate a deformation accumulation elastic force. When the hook 11 moves beyond the end of the inclined plane 211, the reset piece 400 is restored from the stretching state to deform and release the elastic force, the direction of the elastic force of the reset piece 400 is parallel to the direction of the clamping connection between the hook 11 and the limiting plate 21, so as to drive the moving part 12 and the hook 11 to fall along the Y2 direction, and the hook 11 enters the accommodating space 22. Referring to fig. 4, in the process of opening the door, the hook 11 is lifted along the second direction L2, the moving portion 12 is lifted along the Y1 direction in the kidney-shaped hole 201, the hook 11 can move along the X1 direction after being lifted to leave the accommodating space 22, and the door 200 is opened outward relative to the box 300 while the hook 11 moves along the X1 direction. In the process that the hook 11 is lifted along the Y1 direction, the reset element 400 needs to be driven to stretch, that is, the elastic force of the reset element 400 that restores to elastic deformation needs to be overcome to do work. The piece 400 that resets of suitable stiffness coefficient can be selected for use to make adult can overcome the elasticity that resets piece 400 with trip 11 lifting and pull out, and children's strength is difficult to overcome the elasticity that resets piece 400 with trip 11 lifting and pull out, avoids children's maloperation to open door body 200 easily, reduces the potential safety hazard.

Referring to fig. 2, 4 and 7, fig. 7 is an enlarged view of a region a2 in fig. 2. In some embodiments, the limiting member 40 includes a body 41, a fitting portion 42 and a limiting portion 43. The body 41 is rotatably mounted to the stand 20. A mating portion 42 extends from a first end 411 of body 41, mating portion 42 for mating with drive assembly 30. The limiting portion 43 extends from the second end 412 of the body 41, and the limiting portion 43 is engaged with the hook 11. In some embodiments, in the unlocked state, the restriction 43 abuts the wall surface 27 of the holder 20 to avoid the hook 11.

Referring to fig. 7, in some embodiments, the bracket 20 includes a mounting post 25 and a latch 26, the limiting member 40 further includes a blocking portion 44 disposed on a sidewall 413 of the body 41, the body 41 is sleeved on the mounting post 25 to enable the limiting member 40 to rotate relative to the mounting post 25, and the blocking portion 44 is configured to abut against the latch 26 to limit the axial movement of the body 41 along the mounting post 25.

Referring to fig. 4, in some embodiments, in the unlocking position, the limiting portion 43 is located outside the path of the hook 11 departing from the bracket 20. In the embodiment illustrated in fig. 1, in the unlocking position, the driving assembly 30 is not engaged with the limiting member 40, the limiting member 43 naturally droops under the action of gravity, and the limiting member 43 naturally droops to move out of the path of the hook 11 out of the bracket 20 to avoid the hook 11. Referring to fig. 7, under the driving of the driving assembly 30, the engaging portion 42 drives the body 41 to rotate around the mounting post 25, so that the limiting portion 43 rotates from the unlocking position to the locking position. In the lock position, the restriction portion 43 is located on a path along which the hook 11 is disengaged from the holder 20. The restriction portion 43 is kept in the lock position under the continuous driving of the driving assembly 30.

Referring to fig. 5, the weight of the limiting portion 43 is greater than the weight of the matching portion 42, and when the driving assembly 30 is disengaged from the limiting member 40, the limiting portion 43 rotates from the locking position to the unlocking position under the action of its own gravity, so as to release the limitation of the limiting member 40 on the hook 11.

Referring to fig. 4 and 5, in some embodiments, the driving assembly 30 includes a driving member 31 and a transmission member 32, the transmission member 32 is used for engaging with the limiting member 40, and the driving member 31 is used for driving the transmission member 32 to engage with or disengage from the limiting member 40.

Referring to fig. 8, in some embodiments, the bracket 20 includes a mounting hole 205, the driving member 31 includes a fixing hole 311, the door lock structure 100 further includes a screw 60, and the screw 60 penetrates through the mounting hole 205 and the fixing hole 311 to fixedly mount the driving member 31 on the bracket 20.

Referring to fig. 9, in some embodiments, the driving member 31 includes an electromagnet 312, and the transmission member 32 includes a push rod 321 and an elastic portion 322. The push rod 321 is disposed through the electromagnet 312. The elastic portion 322 is sleeved on the push rod 321, and two ends of the elastic portion 322 are respectively connected with the electromagnet 312 and the tail portion of the push rod 321.

Referring to fig. 4, when the electromagnet 312 is energized, the electromagnet 312 drives the push rod 321 to move along the first direction L1. During the movement of the push rod 321 in the first direction L1, the elastic portion 322 is elastically deformed by compression. With the movement of the push rod 321 in the first direction L1, the push rod 321 pushes the restriction member 40 to rotate. In one embodiment, when the push rod 321 moves in the first direction L1 to reach the maximum stroke position, the limiting member 40 is in the locking position, and the limiting member 40 is kept in the locking position to block the hook 11 from being disengaged from the bracket 20 under the condition that the electromagnet 312 is continuously electrified. In a further embodiment, when the limiting member 40 is pushed by the push rod 321 to rotate to the maximum rotation stroke position, for example, to the maximum stroke position where the limiting portion 43 rotates clockwise in the embodiment shown in fig. 4, the limiting member 40 is in the locking position, and the limiting member 40 will be kept in the locking position to block the hook 11 from being disengaged from the bracket 20 under the condition that the electromagnet 312 is continuously energized.

Referring to fig. 3, when the electromagnet 312 is powered off, the electromagnet 312 stops driving the push rod 321 to move along the first direction L1, the compressed elastic member recovers the elastic deformation to generate a restoring force, and the restoring force drives the push rod 321 to move along the second direction L2 to retract the push rod 321. The retracted push rod 321 cancels the pushing force applied to the restricting member 40, and the restricting member 40 rotates under the action of gravity, returns from the locking position to the unlocking position, and is maintained in the unlocking position under the action of gravity.

Referring to fig. 9, in some embodiments, the door lock structure 100 further includes a controller (not shown), and the driving member 31 further includes a lead 313, wherein the lead 313 is used for connecting to the controller. The controller controls the energization or de-energization of the electromagnet 312 through the lead wire 313 to switch the unlocking position and the locking position of the delimiting member 40.

Referring to fig. 6, when the door 200 is opened, the hook 11 does not enter the inside of the bracket 20, and the electromagnet 312 is continuously energized, so that the limiting member 40 is kept at the locking position. Referring to fig. 4, in the process that the hook 11 moves along the inclined surface 211 of the limiting plate 21 into the bracket 20, the limiting portion 43 of the limiting member 40 is located on the path that blocks the hook 11 from entering the accommodating space 22, and the hook 10 needs to overcome the resistance of the limiting member 40 to enable the hook 11 to enter the accommodating space 22. Therefore, by adjusting the magnetic force of the electromagnet 312, the driving force applied by the driving assembly 30 to the limiting piece 40 can be adjusted to adjust the resistance of the limiting piece 40 to the hook 11, and the resistance of the limiting piece 40 to the hook 11 is controlled within a proper range, so that an adult can overcome the resistance of the limiting piece 40 to the hook 11 to push the hook 11 to the accommodating space 22 to close the door body 200, and the child is difficult to close the door body 200 by the force of the child, thereby preventing the child from being pinched when the child closes the door. Referring to fig. 4, after the hook 11 overcomes the resistance of the limiting member 40 and enters the accommodating space 22 to be locked with the limiting plate 21, the electromagnet 312 is still continuously energized, so that the limiting member 40 is continuously kept at the locking position to prevent the hook 11 from being disengaged from the bracket 20. Referring to fig. 5, when the door needs to be opened, the controller controls the electromagnet 312 to be powered off, and the push rod 321 no longer pushes the limiting member 40, so that the limiting member 40 returns to the unlocking position under the action of gravity, and the hook 11 can be disengaged from the bracket 20. After the hook 11 is separated from the bracket 20, the door body 200 is opened, and the controller controls the electromagnet 312 to be electrified again, so that the limiting piece 40 is in the locking position.

Referring to fig. 10-11, in some embodiments, the driving member 31 includes a driving circuit 314, and the transmission member 32 includes an electromagnet 324. The drive circuit 314 is used to switch the electromagnet 324 between an energized and de-energized state.

In some embodiments, the limiting member 40 is a metal or alloy member with magnetic properties to generate a magnetic force fit with the electromagnet 324.

In some embodiments, the limiting member 40 is provided with a magnetic unit, and the magnetic unit is driven to rotate the limiting member 40 under the condition that the electromagnet 324 generates a magnetic force. For example, the magnetic unit is a permanent magnet, the magnetic unit is fixedly connected with the matching portion 42 of the limiting member 40, and when the electromagnet 324 is energized to generate a magnetic force, the magnetic force of the electromagnet 324 drives the permanent magnet to drive the matching portion 42 to rotate.

Referring to fig. 10, in an embodiment, the electromagnet 324 is disposed on the right side of the limiting member 40, and when the driving circuit 314 supplies power to the electromagnet 324, the electromagnet 324 generates magnetic force, and the magnetic force of the electromagnet 324 is different from the magnetic force of the matching portion 42, so that the mutually attracted magnetic force is generated to attract the matching portion 42 to approach the electromagnet 324, so as to drive the limiting member 40 to rotate clockwise to the locking position. The restriction part 43 can block the hook 11 from being disengaged from the holder 20 when the restriction member 40 is in the locking position. With the electromagnet 324 continuously energized, the magnetic force of the electromagnet 324 holds the restricting member 40 in the locked position.

When the drive circuit 314 stops supplying power to the electromagnet 324, the magnetic force of the electromagnet 324 disappears, the electromagnet 324 is disengaged from the engaging portion 40 by the magnetic force, and the restricting piece 40 falls back from the lock position to the unlock position by its own weight.

Referring to fig. 11, in another embodiment, the electromagnet 324 is disposed on the left side of the limiting member 40, and when the driving circuit 314 supplies power to the electromagnet 324, the electromagnet 3324 generates magnetic force, and the magnetic force of the electromagnet 324 is the same as the magnetic force of the matching portion 42, so that the matching portion 42 is pushed away from the electromagnet 324 by the generated repulsive magnetic force to drive the limiting member 40 to rotate clockwise to the locking position. When the restricting member 40 is in the locking position, the restricting portion 43 can block the hook 11 from being disengaged from the holder 20. With the electromagnet 324 continuously energized, the magnetic force of the electromagnet 324 holds the restricting member 40 in the locked position.

When the drive circuit 314 stops supplying power to the electromagnet 324, the magnetic force of the electromagnet 324 disappears, the electromagnet 324 is disengaged from the engaging portion 42, and the restricting member 40 rotates back to the unlock position by gravity.

In other embodiments, when the limiting member 40 rotates counterclockwise from the unlocking position to the locking position, if the electromagnet 324 is disposed on the left side of the limiting member 40, the magnetism of the electromagnet 324 is different from that of the engaging portion 42 of the limiting member 40, so that the magnetic force generated by the electromagnet 324 can attract the engaging portion 42 to approach the electromagnet 324, and the limiting member 40 rotates counterclockwise to the locking position; if the electromagnet 324 is disposed on the right side of the limiting member 40, the magnetism of the electromagnet 324 is the same as the magnetism of the engaging portion 42 of the limiting member 40, so that the magnetic force generated by the electromagnet 324 can push the engaging portion 42 away from the electromagnet 324, and the limiting member 40 rotates counterclockwise to the locking position.

Referring to fig. 1 to fig. 3, 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 according to any one of the above embodiments. The clamping member 10 is installed in the door 200, and the bracket 20 and the driving member 31 are installed on the case 300.

Referring to fig. 4 and 5, the door lock structure 100 is used to close the door 200 on the box 300, so that the hook 11 is locked on the position-limiting plate 21. When the hook 11 is caught on the limit plate 21, the limit member 40 is kept at the locking position by the driving of the driving assembly 30 to prevent the hook 11 from being separated from the bracket 20, so that a user, especially a child without accompanying an adult, can be prevented from easily opening the door body 200 by a mistake. When the user needs to open the door 200, the driving assembly 30 stops driving the limiting member 40, and the limiting member 40 is switched from the locking position to the unlocking position, so as to release the movement limitation of the hook 11. After the limiting piece 40 releases the movement limitation of the hook 11, the door 200 can be pulled, so that the hook 11 is separated from the limiting plate 21 and moves from the inside of the bracket 20 to the outside of the bracket 20, and the door 200 is opened from the box 300. Through the household appliance 1000 of the embodiment of the application, the driving assembly 30 needs to be operated before the door body 200 is opened, the steps of the door opening action of the household appliance 1000 are increased, the door opening action can be effectively prevented from being easily operated by mistake, and the use safety of the household appliance 1000 is improved.

Referring to fig. 1, in some embodiments, the household appliance 1000 further includes a control box 310 and an on-off key 311. In the embodiment illustrated in fig. 1, the control box 310 is provided to the case 300. In other embodiments, the control box 310 may be disposed on the door 200, and is not limited herein. The switch key 311 is provided in the control box 310.

Referring to fig. 4 and 5, in an embodiment, the switch key 311 is used to trigger an unlocking instruction, and the control box 310 may control the power-off of the driving assembly 30 according to the unlocking instruction, so that the limiting member 40 is in an unlocked state. For example, the unlocking command is triggered by the switch key 311, the power of the driving unit 30 is controlled to be cut off, the locking state of the limiting member 40 shown in fig. 4 is changed into the unlocking state shown in fig. 5, and the door 200 can be opened.

Referring to fig. 4 and 5, in an embodiment, the switch 311 is used to trigger a locking command, and the control box 310 can control the driving assembly 30 to be powered on according to the locking command, so that the limiting member 40 is in a locked state. For example, the switch key 311 triggers a lock command to control the driving unit 30 to be energized, so that the restricting member 40 is changed from the unlock state illustrated in fig. 5 to the lock state illustrated in fig. 4, thereby closing the door 200.

Referring to fig. 12, an embodiment of the present application further provides a method for controlling a household appliance 1000, including:

01: under the condition that the driving assembly is matched with the limiting piece, so that the limiting piece is positioned at the locking position, controlling the driving assembly to be powered off according to an unlocking instruction; and/or

02: and under the condition that the driving assembly is disengaged from the limiting piece, so that the limiting piece is positioned at the unlocking position, controlling the driving assembly to be electrified according to a locking instruction.

The control method may be executed by a controller (not shown) of the door lock structure 100, that is, the controller is used to execute the method in 01 and/or 02. Referring to fig. 1, in one embodiment, the controller is disposed in the control box 310.

Referring to fig. 1, in one embodiment, the unlock command is triggered by the user pressing the switch key 311. The control box 310 also includes other keys, and the lock command is triggered by the user pressing the other keys. In another embodiment, the lock command is triggered by the user pressing switch key 311. The control box 310 also includes other keys, and the unlock command is triggered by the user pressing the other keys.

Referring to fig. 1, in a further embodiment, the unlocking command is triggered by the user pressing the switch key 311, and the locking command is automatically triggered by the household appliance 1000 according to a preset time.

In some embodiments, after receiving the unlocking command and the first preset time, the controller controls the driving assembly 30 to drive the limiting member 40 to move from the unlocking position to the locking position again. The first preset time may be 10 seconds, 12 seconds, 14 seconds, 16 seconds, etc., without limitation.

For example, the driving member 40 is extended by the push rod 32 to drive the limiting member 40 to move, the extended push rod 32 is in contact with and matched with the limiting member 40 to push the limiting member 40 to move, and the limiting member 40 abuts against the limiting member 40 when moving to the limiting position. When the door body 200 is in the closed state, the controller controls the push rod 32 to keep the extended state so as to continuously abut against the limiting piece 40, so that the limiting piece 40 is in the locking position. When the door body 200 needs to be opened, a user presses the switch key 311 to trigger an unlocking instruction, the controller controls the push rod 32 to retract, when the push rod 32 retracts to a certain position, the push rod 32 is not contacted with the limiting piece 40 any more, at the moment, the push rod 32 is disengaged from the limiting piece 40, and the limiting piece 40 rotates to an unlocking position from a locking position under the action of self gravity when the thrust of the push rod 32 does not act, so that a path for the hook 11 to be separated from the bracket 20 is opened. The first preset time is set to 10 seconds, and after the switch key 311 is pressed to trigger the unlocking instruction and 10 seconds pass, the controller controls the push rod 32 to extend again to push the limiting member to rotate from the unlocking position to the locking position.

Referring to fig. 6, if the door 200 is in the open state after the first preset time and the latch 10 is far away from the bracket 20, when the door 200 needs to be closed, the user needs to overcome the pushing force of the push rod 32 to send the latch 11 into the accommodating space 22, so as to avoid the door being closed by mistake. Because the controller controls the push rod 32 to extend continuously, after the hook 11 is sent into the accommodating space 22, the push rod 32 continuously abuts against the limiting piece 40, so that the limiting piece 40 is in a locking position to limit the moving range of the hook 11. If the door body 200 is in the closed state after the first preset time, the household appliance 1000 automatically controls the limiting member 40 to fall back to the locking position after the first preset time, so that the door body can be locked in time under the condition that the user mistakenly touches the switch key 311 to cause mistaken unlocking when the user does not want to open the door.

Referring to fig. 10, in some embodiments, the household appliance 1000 further includes a micro switch 320 disposed on the bracket 20. The microswitch 320 is used for detecting whether the hook 11 is matched with the limit plate 21. For example, when the hook 11 is engaged with the position-limiting plate 21, the hook 11 abuts against the micro switch 320, and if the micro switch 320 cannot detect the interference with the hook 11, the micro switch 320 confirms that the hook 11 is not engaged with the position-limiting plate 21.

Referring to fig. 1 and 10, in some embodiments, the microwave generator 330 and the micro switch 320 are electrically connected to the control box 310, respectively. After the control box 310 receives the unlocking instruction and the second preset time elapses, when the micro switch 320 detects that the hook 11 is engaged with the limit plate 21, the control box 310 controls the driving assembly 30 to be powered on. Therefore, the situation that the door body 200 cannot be tightly closed due to the limitation piece 40 limiting the movement of the hook 11 when the driving assembly 30 is powered on under the condition that the hook 11 extends into the bracket 20 but is not matched with the limitation plate 21 can be avoided. Thereby ensuring that the restricting member 40 restricts the movement of the hook 11 in the case where the door body 200 is tightly closed.

Referring to fig. 2, in some embodiments, the household appliance 1000 further includes a microwave generator 330, and the microwave generator 330 is disposed in the box 300 and used for generating microwaves. Referring to fig. 1, in some embodiments, when the microwave generator 330 is in a working state, even if the switch key 311 triggers an unlocking instruction, the control box 310 does not control the driving assembly 30 to be powered on, so as to prevent the driving assembly 30 from driving the limiting piece 40 to leave the hook 11, so that the door 200 is in an openable state and microwave leakage is avoided.

In the description herein, references to the description of the terms "certain embodiments," "one example," "exemplary," etc., 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 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. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps of the process, and the scope of the preferred embodiments of the present application includes other implementations in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the present application.

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 in 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 openable and closable manner;

A limiting member rotatably mounted on the bracket and capable of reciprocating between an unlocking position and a locking position; and

the driving assembly is used for being matched with or separated from the limiting piece; when the driving assembly is matched with the limiting piece, the limiting piece is driven to rotate to the locking position, and when the driving assembly is not matched with the limiting piece, the limiting piece rotates to the unlocking position due to self weight;

when the limiting piece is positioned at the locking position, the limiting piece limits the moving range of the hook so as to avoid the hook in a matching state from separating from the limiting plate;

when the limiting piece is located at the unlocking position, the limiting piece avoids the clamping hook.

2. The door lock structure according to claim 1, wherein the defining member comprises:

a body rotatably mounted to the bracket;

a mating portion extending from the first end of the body, the mating portion for mating with the drive assembly; and

the limiting part extends from the second end of the body, the weight of the limiting part is greater than that of the matching part, and under the condition that the driving assembly is not matched with the limiting part, the limiting part falls back to the unlocking position from the locking position due to self weight.

3. The door lock structure of claim 2, wherein the bracket includes a mounting post and a latch, the limiting member further includes a stopper disposed on a sidewall of the body, the body is sleeved on the mounting post to enable the limiting member to rotate relative to the mounting post, and the stopper is configured to interfere with the latch to limit axial movement of the body along the mounting post.

4. The door lock structure according to claim 1, further comprising a reset member, wherein the reset member is respectively connected to the latch member and the door body,

the elastic direction of the reset piece is parallel to the clamping direction of the clamping hook and the limiting plate.

5. The door lock structure according to claim 1, wherein when the hook is separated from the position-limiting plate and the limiting member is in the locked position, the hook overcomes the resistance of the limiting member to engage with the position-limiting plate when a first force applied to the engaging member from outside is greater than a second force applied to the limiting member by the driving assembly.

6. The door lock structure according to any one of claims 1 to 5, wherein the driving assembly includes a driving member and a driving member, the driving member is adapted to engage with the limiting member, and the driving member is adapted to drive the driving member to engage with or disengage from the limiting member.

7. The door lock structure according to claim 6, wherein the driving member comprises 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 head of the push rod to move along a first direction so as to push the limiting piece to rotate to the locking position, and the elastic part generates elastic deformation;

under the condition that the electromagnet is powered off, the elastic part generates restoring force, the restoring force drives the head of the push rod to move along a second direction, the limiting piece is disengaged from the head of the push rod, the limiting piece falls back to the unlocking position from the locking position due to dead weight, and the second direction is opposite to the first 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 locking 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 unlocking position from the locking 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. The door lock structure according to claim 1, wherein the driving assembly further comprises a fixing hole, the bracket further comprises a mounting hole, and the door lock structure further comprises a screw passing through the fixing hole to cooperate with the mounting hole to fix the driving assembly to the bracket.

11. A household appliance, characterized in that, it comprises a door body, a box body and the door lock structure of any one of claims 1-10, the clamping piece is installed on the door body, the bracket and the driving component are installed on the box body.

12. The household appliance of claim 11, 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 first and the second end of the pipe are connected with each other,

the switch key is used for triggering an unlocking instruction, and the control box controls the power-off of the driving assembly according to the unlocking instruction; and/or

The switch key is used for triggering a locking instruction, and the control box controls the drive assembly to be electrified according to the locking instruction.

13. The household appliance according to claim 12, 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 plate, the control box controls the microwave generator to stop working.

14. A control method of a home appliance according to any one of claims 11 to 13, comprising:

under the condition that the driving assembly is matched with the limiting piece, so that the limiting piece is positioned at the locking position, controlling the driving assembly to be powered off according to an unlocking instruction; and/or

And under the condition that the driving assembly is disengaged from the limiting piece, so that the limiting piece is positioned at the unlocking position, controlling the driving assembly to be electrified according to a locking instruction.

15. The control method according to claim 14,

after the unlocking instruction is received and first preset time passes, controlling the driving assembly to drive the limiting piece to move from the unlocking position to the locking position; or

After the unlocking instruction is received and second preset time passes, controlling the driving assembly to be electrified when the clamping hook is detected to be matched with the limiting plate.