Door lock of household appliance and household appliance

Abstract

The door lock of the household appliance comprises a lock body and a door hook, the lock body comprises a movable lock cylinder and a first elastic component, when the door hook is inserted into the lock body and locked by the lock cylinder, the first elastic component acts on the lock cylinder to keep the lock cylinder to lock the door hook, the lock body further comprises a linkage component and a second elastic component, and the linkage component acts on the second elastic component. The door lock has a first locking state and a second locking state, and when the door lock is in the first locking state, the linkage component is connected with the first elastic component and the second elastic component; and when the door lock is in the second locking state, the linkage part releases the first elastic part. The force required for opening the machine door can be adjusted through the linkage component and the second elastic component, when household appliances such as a clothes dryer work, the force required for opening the machine door can be adjusted to be large so as to prevent clothes from jacking the machine door, and when a user takes and places the clothes, the force required for opening the machine door can be adjusted to be small so as to prevent the clothes from jacking the machine door. The user can open the door more easily, and the use experience of the user is improved.

Description

Technical Field

[0001] The utility model belongs to the field of household appliances, and particularly relates to a door lock for household appliances and a household appliance. Background Art

[0002] With the improvement of living quality, consumers pay more and more attention to the use experience of household appliances such as clothes dryers.

[0003] Household appliances such as clothes dryers generally include a machine body and a machine door. The machine body and the machine door are locked by a door lock. To meet the safety regulations, the door lock must be configured to be opened when a user applies an external force to the machine door during the operation of the clothes dryer. However, when a clothes dryer or other household appliance is running, the clothes will impact the machine door under the action of the drum. To prevent the machine door from being pushed open by the clothes, currently, the opening force of the door lock of clothes dryers on the market is usually designed to be relatively large, that is, the force required to open the machine door is greater than the thrust of the clothes on the machine door. Although it avoids the machine door being pushed open by the clothes, it also causes the user to need a relatively large force to open the machine door when taking clothes, making it laborious to open the door and resulting in a poor user experience. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is to provide a door lock for household appliances to solve the problem of laborious door opening for users.

[0005] To solve the above technical problem, the utility model adopts the following technical scheme: A door lock for household appliances includes a lock body and a door hook. The lock body includes a movable lock core and a first elastic member. When the door hook is inserted into the lock body and locked by the lock core, the first elastic member acts on the lock core to maintain the locking of the lock core on the door hook. The lock body further includes a linkage member and a second elastic member arranged side by side with the first elastic member. The door lock has a first locked state and a second locked state. When the door lock is in the first locked state, the linkage member connects the first elastic member and the second elastic member, so that the unlocking action of the door hook compresses both the first elastic member and the second elastic member simultaneously; when the door lock is in the second locked state, the linkage member releases the first elastic member, so that the unlocking action of the door hook compresses the first elastic member. The technical scheme has the following technical effects:

[0006] The present utility model realizes the connection or separation of the first elastic member and the second elastic member by arranging a linkage member and a second elastic member in the lock body, so that the linkage member can be connected to or disengaged from the first elastic member. When household appliances such as a dryer are working, the door lock is in the first locked state. At this time, the linkage member moves to a position where it is connected to both the first elastic member and the second elastic member, so that the first elastic member and the second elastic member are connected together through the linkage member, that is, the lock core is connected to both the first elastic member and the second elastic member at the same time. The second elastic member can increase the force required to open the door. If the clothes want to push open the door to disengage the door hook from the lock body, the lock core needs to squeeze both the first elastic member and the second elastic member at the same time. The combination of the second elastic member and the first elastic member makes it difficult for the force exerted by the clothes on the door in the door-opening direction to overcome the elastic forces of the first elastic member and the second elastic member, thereby preventing the door from being pushed open by the clothes. When household appliances such as a dryer stop working and the user needs to open the door to take out the clothes, the door lock is in the second locked state. At this time, the linkage member moves to a position where it is disengaged from the first elastic member, so that the first elastic member and the second elastic member are separated, that is, the lock core is only connected to the first elastic member. If the user needs to pull open the door to disengage the door hook from the lock body, the force applied by the user to open the door only needs to overcome the elastic force of the first elastic member. By means of the linkage member and the second elastic member, the magnitude of the force required to open the door can be adjusted. When household appliances such as a dryer are working, the force required to open the door can be adjusted to be relatively large to prevent the clothes from pushing open the door. When the user takes in and out the clothes, the force required to open the door can be adjusted to be relatively small, making it easier for the user to open the door and improving the user experience.

[0007] In the above-mentioned household appliance, the first elastic member includes a connecting member connected to the lock core and a first spring abutted between the connecting member and the lock body. The second elastic member includes an adjusting member and a second spring abutted between the adjusting member and the lock body. When the door lock is in the first locked state, the connecting member and the adjusting member are connected through the linkage member to jointly squeeze the first spring and the second spring. By setting the first elastic member into a structure combined with the connecting member and the first spring, and at the same time setting the second elastic member into a structure of the adjusting member and the second spring, both the first elastic member and the second elastic member are composed of two parts. One part is a non-elastic part for connecting the linkage member (i.e., the connecting member and the adjusting member), and the other part is a spring part for providing elastic force (i.e., the first spring and the second spring). This not only ensures that the first elastic member and the second elastic member can be stably linked through the linkage member, but also ensures that the first elastic member and the second elastic member can provide sufficient door-opening resistance when the electrical appliance is working to prevent the clothes from pushing open the door.

[0008] In the above-mentioned household appliance, the linkage components include a linkage rod and a driving assembly. When the door lock is in the first locked state, the driving assembly pushes the linkage rod to be inserted into the connector and the adjusting member along the radial direction of the connector. When the appliance needs to work, the driving assembly pushes the linkage rod to move along the axial direction of the linkage rod, so that the linkage rod is inserted into the adjusting member and the connector respectively along the radial direction of the adjusting member and the connector, to connect the connector and the adjusting member, so that the connector and the adjusting member are axially linked. If the clothes collide with the door in the direction of pushing open the door, the lock core needs to drive the connector and the adjusting member to move simultaneously and squeeze the first spring and the second spring under the connection of the linkage rod. The first spring and the second spring provide sufficient resistance to opening the door to prevent the clothes from pushing open the door. After the appliance stops working, the linkage rod can be pushed to move along the central axis of the linkage rod in the direction away from the connector, so that the linkage rod is only inserted into the adjusting member and no longer inserted into the connector, that is, the adjusting member and the connector are no longer linked. If the user pulls the door, the lock core only needs to drive the connector to move and squeeze the first spring to overcome the elastic force of the first spring to pull open the door, which is more labor-saving.

[0009] In the above-mentioned household appliance, the adjusting member is provided with a mounting hole penetrating the adjusting member along the radial direction of the adjusting member. The side of the connector facing the adjusting member is provided with a slot. The linkage rod passes through the mounting hole and is inserted into the slot to link the connector and the adjusting member. When the door lock is in the first locked state, the linkage rod passes through the mounting hole and is inserted into the slot to link the connector and the adjusting member; when the door lock is in the second locked state, the linkage rod is disengaged from the slot, so that the connector and the adjusting member are no longer linked. The linkage rod cooperates with the adjusting member and the connector through the mounting hole and the slot, so that the connection between the linkage rod and the adjusting member and the connector in the axial direction of the adjusting member is tighter, and thus the linkage effect between the connector and the adjusting member is good.

[0010] In the above-mentioned household appliance, the linkage rod includes a stopper and a rod body. The driving assembly drives the rod body to be inserted into the adjusting member and the connector by pushing the stopper. When the driving assembly pushes the stopper towards the adjusting member, the stopper can push the rod body towards the connector, so that the rod body is inserted into the slot of the connector. The stopper can increase the area of the end of the rod body, and thus increase the area of the linkage rod in contact with the driving assembly, making it extremely easy to align the driving assembly with the linkage rod during installation, reducing the assembly difficulty, and at the same time ensuring that the driving assembly can stably push the linkage rod.

[0011] In the above-mentioned household appliance, the linkage component further includes an elastic reset member. The two ends of the elastic reset member respectively abut against the linkage rod and the lock body, so as to push the linkage rod to disengage from the connecting member. When the driving assembly pushes the linkage rod to be inserted into both the connecting member and the adjusting member at the same time, the elastic reset member is compressed by the linkage rod and the lock body; when the driving assembly no longer pushes the linkage rod, the elastic reset member pushes the linkage rod to move towards the driving assembly direction, so that the linkage rod disengages from the connecting member, and the connecting member and the adjusting member are no longer linked. The setting of the elastic reset member enables the elastic reset member to assist the linkage rod to disengage from the connecting member without the drive of the driving assembly, so as to ensure the smooth switching of the linkage rod between two positions, and further ensure that the door lock can be stably switched between the first locked state and the second locked state, and the work is more stable and reliable.

[0012] In the above-mentioned household appliance, the driving assembly includes a motor and a cam connected to the output shaft of the motor. The motor drives the cam to rotate, so as to push the linkage rod to be inserted into the first elastic member through the cam. When the end of the cam facing the stopper changes from the proximal end of the cam to the distal end of the cam, the cam pushes the linkage rod towards the connecting member direction. The cam abuts against the stopper through the distal end, so that the rod body is inserted into both the adjusting member and the connecting member at the same time, and further the connecting member and the adjusting member are linked; when the end of the cam close to the stopper changes from the distal end to the proximal end, the cam forms an avoidance for the stopper through the proximal end, so that there is a certain space between the stopper and the cam, and the rod body can move towards the cam direction under the push, and the rod body abuts against the stopper to push the stopper towards the cam direction. The setting of the cam structure enables the driving assembly to push the stopper through the distal end of the cam and form an avoidance for the stopper through the proximal end of the cam during the rotation of the cam, so that the movement of the linkage rod is smoother.

[0013] In the above-mentioned household appliance, the driving assembly is a linear actuator. The output shaft of the linear actuator is connected to the linkage rod to drive the linkage rod to be inserted into or disengaged from the first elastic member. When the output shaft expands and contracts, the stopper moves along with the output shaft of the linear actuator to drive the rod body to be inserted into or disengaged from the connecting member, so that there is no need to additionally set other structures to assist the linkage rod to disengage from the connecting member, and the structure is simple and the operation is stable.

[0014] In the above-mentioned household appliance, a limiting groove is provided on the adjusting member. One end of the second spring close to the adjusting member is embedded in the limiting groove. The setting of the limiting groove facilitates the installation and positioning of the adjusting member and the second spring, and can limit the second spring at the same time, so that the second spring always abuts against the adjusting member, so that the door lock in the first locked state can stably increase the force required to open the machine door through the second spring, so as to prevent the machine door from being pushed open by clothes.

[0015] In the above-mentioned household appliance, the lock body is provided with a first sliding groove and a second sliding groove that communicate with each other on the side. The connecting piece is slidably connected in the first sliding groove, and the adjusting piece is slidably connected in the second sliding groove. The first sliding groove can guide the movement of the connecting piece, and the second sliding groove can guide the movement of the adjusting piece. The side parts of the first sliding groove and the second sliding groove communicate with each other, reserving space for the linkage rod. The linkage rod passes through the side part where the first sliding groove and the second sliding groove communicate, so as to be inserted into both the adjusting piece and the connecting piece at the same time. When the adjusting piece and the connecting piece move axially, the linkage rod can also slide on the side part where the first sliding groove and the second sliding groove communicate, so as to move along with the adjusting piece and the connecting piece. The arrangement of the first sliding groove and the second sliding groove enables the connecting piece and the adjusting piece to only slide on the defined path, ensuring the distance between the connecting piece and the adjusting piece, so as to ensure that the linkage rod can be stably inserted into or disengaged from the connecting piece, and further ensuring stable operation.

[0016] The present utility model also provides a household appliance, including a body and a door, and further including the above-mentioned door lock. The lock body is arranged on the body, and the door hook is arranged on the door.

[0017] The features and advantages of the present utility model will be disclosed in detail in the following specific embodiments and drawings. Description of the Drawings

[0018] The following further describes the present utility model in conjunction with the drawings and specific embodiments:

[0019] Figure 1 It is a perspective view of the lock body in Embodiment 1;

[0020] Figure 2 It is a sectional view of the door lock in the first locked state in Embodiment 1;

[0021] Figure 3 It is a sectional view of the door lock in the second locked state in Embodiment 1;

[0022] Figure 4 It is an assembly drawing of the base of the lock body, the first elastic member and the second elastic member in Embodiment 1;

[0023] Figure 5 It is a perspective view of the adjusting piece in Embodiment 1;

[0024] Figure 6 It is a perspective view of the connecting piece in Embodiment 1.

[0025] Reference Signs:

[0026] 100, base; 110, first sliding groove; 120, second sliding groove;

[0027] 200, lock core;

[0028] 300, First elastic member; 310, Connecting member; 311, Slot; 320, First spring;

[0029] 400, Second elastic member; 410, Adjusting member; 411, Mounting hole; 412, Limiting groove; 420, Second spring;

[0030] 500, Linkage member; 510, Linkage rod; 511, Stopper; 512, Rod body; 520, Driving assembly; 521, Cam; 530, Elastic reset member. Detailed implementation manner

[0031] A door lock for a household appliance proposed by the present utility model includes a lock body and a door hook. The lock body includes a movable lock core and a first elastic member. When the door hook is inserted into the lock body and locked by the lock core, the first elastic member acts on the lock core to maintain the locking of the lock core to the door hook. The lock body further includes a linkage member and a second elastic member arranged side by side with the first elastic member. The door lock has a first locked state and a second locked state. When the door lock is in the first locked state, the linkage member connects the first elastic member and the second elastic member, so that the unlocking action of the door hook simultaneously compresses the first elastic member and the second elastic member. When the door lock is in the second locked state, the linkage member releases the first elastic member, so that the unlocking action of the door hook compresses the first elastic member. By providing a linkage member and a second elastic member in the lock body, the present utility model enables the linkage member to connect or disconnect from the first elastic member, thereby realizing the connection or separation of the first elastic member and the second elastic member. When a household appliance such as a dryer is working, the door lock is in the first locked state. At this time, the linkage member moves to a position where it is connected to both the first elastic member and the second elastic member, so that the first elastic member and the second elastic member are connected together through the linkage member, that is, the lock core is connected to both the first elastic member and the second elastic member. The second elastic member can increase the force required to open the machine door. If the clothes push against the machine door to disengage the door hook from the lock body, the lock core needs to simultaneously squeeze the first elastic member and the second elastic member. The combination of the second elastic member and the first elastic member makes it difficult for the force exerted by the clothes on the machine door in the opening direction to overcome the elastic forces of the first elastic member and the second elastic member, thereby preventing the machine door from being pushed open by the clothes. When a household appliance such as a dryer stops working and the user needs to open the machine door to take out the clothes, the door lock is in the second locked state. At this time, the linkage member moves to a position where it is disengaged from the first elastic member, so that the first elastic member and the second elastic member are separated, that is, the lock core is only connected to the first elastic member. If the user needs to pull open the machine door to disengage the door hook from the lock body, the force applied by the user to open the door only needs to overcome the elastic force of the first elastic member. By means of the linkage member and the second elastic member, the magnitude of the force required to open the machine door can be adjusted. When a household appliance such as a dryer is working, the force required to open the machine door can be adjusted to be relatively large to prevent the clothes from pushing open the machine door. When the user takes in and out the clothes, the force required to open the machine door can be adjusted to be relatively small, making it easier for the user to open the door and improving the user experience.

[0032] The technical solutions of the embodiments of the present utility model will be explained and illustrated below with reference to the accompanying drawings of the embodiments of the present utility model. However, the following embodiments are only the preferred embodiments of the present utility model and not all of them. Based on the embodiments in the embodiments, other embodiments obtained by those skilled in the art without creative efforts all fall within the protection scope of the present utility model.

[0033] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.

[0034] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality of" is two or more, unless otherwise clearly defined.

[0035] In the present utility model, unless otherwise clearly specified and defined, the terms such as "mounted", "connected", "connected to", "fixed" and the like should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0036] In the present utility model, unless otherwise clearly specified and defined, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features therebetween. Moreover, the first feature being "above", "over" and "on the top of" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "beneath" and "under the bottom of" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely indicates that the horizontal height of the first feature is lower than that of the second feature.

[0037] Embodiment 1:

[0038] A door lock for a household appliance, such as Figures 1 to 6As shown, it includes a lock body and a door hook. The lock body includes a base 100, a lock core 200, and a first elastic member 300. The lock core 200 is movably connected to the base 100, and the first elastic member 300 is connected to the lock core 200 to push the lock core 200 to move when the lock core 200 switches from the locked state to the unlocked state. The lock body further includes a linkage member 500 and a second elastic member 400, and the first elastic member 300 and the second elastic member 400 are arranged side by side. The door lock has a first locked state and a second locked state. When the door lock is in the first locked state, the first elastic member 300 and the second elastic member 400 are connected together through the linkage member 500, that is, the lock core 200 is simultaneously connected to the first elastic member 300 and the second elastic member 400. If the door hook needs to perform an unlocking action to disengage from the lock body, the lock core 200 needs to simultaneously squeeze the first elastic member 300 and the second elastic member 400 to compress the first elastic member 300 and the second elastic member 400. When the door lock is in the second locked state, the linkage member 500 releases the first elastic member 300, that is, the linkage member 500 no longer connects the first elastic member 300 and the second elastic member 400, and the lock core 200 is only connected to the first elastic member 300. If the door hook needs to perform an unlocking action to disengage from the lock body, the lock core 200 only needs to squeeze the first elastic member 300 to compress the first elastic member 300.

[0039] By arranging a linkage member 500 and a second elastic member 400 inside the lock body, the present utility model enables the linkage member 500 to connect or disconnect from the first elastic member 300, thereby realizing the connection or separation between the first elastic member 300 and the second elastic member 400. When household appliances such as a dryer are operating, the door lock is in the first locked state. At this time, the linkage member 500 moves to a position where it is connected to both the first elastic member 300 and the second elastic member 400 simultaneously, causing the first elastic member 300 and the second elastic member 400 to be connected together through the linkage member 500. That is, the lock core 200 is connected to both the first elastic member 300 and the second elastic member 400 at the same time. The second elastic member 400 can increase the force required to open the door. If the clothes push against the door to disengage the door hook from the lock body, the lock core 200 needs to squeeze both the first elastic member 300 and the second elastic member 400 simultaneously. The combination of the second elastic member 400 and the first elastic member 300 makes it difficult for the force exerted by the clothes on the door in the opening direction to overcome the elastic forces of the first elastic member 300 and the second elastic member 400, thereby preventing the door from being pushed open by the clothes. When household appliances such as a dryer stop operating and the user needs to open the door to take out the clothes, the door lock is in the second locked state. At this time, the linkage member 500 moves to a position where it disconnects from the first elastic member 300, causing the first elastic member 300 and the second elastic member 400 to separate. That is, the lock core 200 is only connected to the first elastic member 300. If the user needs to pull open the door to disengage the door hook from the lock body, the force applied by the user to open the door only needs to overcome the elastic force of the first elastic member 300. By means of the linkage member 500 and the second elastic member 400, the magnitude of the force required to open the door can be adjusted. When household appliances such as a dryer are operating, the force required to open the door can be adjusted to a larger value to prevent the clothes from pushing open the door. When the user takes in and out the clothes, the force required to open the door can be adjusted to a smaller value, making it easier for the user to open the door and improving the user experience.

[0040] The first elastic member 300 includes a connecting member 310 and a first spring 320. The first spring 320 is located between the connecting member 310 and the base 100. The two ends of the first spring 320 are respectively abutted against the base 100 and the connecting member 310. The end of the lock core 200 is inserted into the connecting member 310, causing the connecting member 310 to be connected to the lock core 200. Thus, the first spring 320 can drive the lock core 200 to move by pushing the connecting member 310. The second elastic member 400 includes an adjusting member 410 and a second spring 420. The second spring 420 is located between the adjusting member 410 and the base 100. The two ends of the second spring 420 are respectively abutted against the base 100 and the adjusting member 410. As Figure 2As shown, when the door lock is in the first locked state, the linkage member 500 passes through the connecting member 310 and the adjusting member 410 to connect the two. If the clothes push the door towards the direction of opening the door, the door hook will pull the lock core 200, so that the lock core 200 pushes the connecting member 310 and the adjusting member 410 in the direction of squeezing the first spring 320 and the second spring 420. Also, because the combined elastic force of the first spring 320 and the second spring 420 is relatively large, the pushing force of the clothes on the door cannot overcome the elastic force of the first spring 320 and the second spring 420, thus preventing the clothes from pushing open the door. As Figure 3 shown, when the door lock is in the second locked state, the linkage member 500 is only inserted through the adjusting member 410. If the user wants to pull open the door, the door hook will pull the lock core 200, so that the lock core 200 pushes the connecting member 310 in the direction of squeezing the first spring 320. Therefore, the user only needs to overcome the elastic force of the first spring 320 to pull open the door. By setting the first elastic member 300 as a structure combining the connecting member 310 and the first spring 320, and at the same time setting the second elastic member 400 as a structure of the adjusting member 410 and the second spring 420, both the first elastic member 300 and the second elastic member 400 are composed of two parts. One part is the non-elastic part for connecting the linkage member 500 (i.e., the connecting member 310 and the adjusting member 410), and the other part is the spring part for providing elastic force (i.e., the first spring 320 and the second spring 420). This not only ensures that the first elastic member 300 and the second elastic member 400 can be stably linked through the linkage member 500, but also ensures that the first elastic member 300 and the second elastic member 400 can provide sufficient door-opening resistance during the operation of the electrical appliance to prevent the clothes from pushing open the door.

[0041] In this embodiment, the linkage member 500 includes a linkage rod 510 and a driving assembly 520. When the electrical appliance needs to work, the driving assembly 520 pushes the linkage rod 510 to move along the axial direction of the linkage rod 510, so that the linkage rod 510 is inserted into the adjusting member 410 and the connecting member 310 respectively along the radial direction of the adjusting member 410 and the connecting member 310, to connect the connecting member 310 and the adjusting member 410, so that the connecting member 310 and the adjusting member 410 are axially linked. If the clothes collide with the door in the direction of pushing the door open, then under the connection of the linkage rod 510, the lock core 200 needs to drive the connecting member 310 and the adjusting member 410 to move simultaneously and compress the first spring 320 and the second spring 420. The first spring 320 and the second spring 420 provide sufficient resistance to opening the door to prevent the clothes from pushing open the door. After the electrical appliance stops working, the linkage rod 510 can be pushed to move along the central axis of the linkage rod 510 in a direction away from the connecting member 310, so that the linkage rod 510 is only inserted into the adjusting member 410 and no longer inserted into the connecting member 310, that is, the adjusting member 410 and the connecting member 310 are no longer linked. If the user pulls the door, the lock core 200 only needs to drive the connecting member 310 to move and compress the first spring 320 to overcome the elastic force of the first spring 320, then the door can be pulled open, which is more labor-saving.

[0042] As Figure 5 shown, an installation hole 411 is provided on the adjusting member 410. The installation hole 411 penetrates the adjusting member 410 along the radial direction of the adjusting member 410 for inserting the linkage rod 510. As Figure 6 shown, a slot 311 is provided on the side wall of the connecting member 310. The slot 311 is provided on the side of the connecting member 310 facing the adjusting member 410, and the opening of the slot 311 faces the adjusting member 410 for inserting the linkage rod 510. As Figure 2 shown, when the door lock is in the first locked state, the linkage rod 510 passes through the installation hole 411 and is inserted into the slot 311, so that the connecting member 310 and the adjusting member 410 are linked; as Figure 3 shown, when the door lock is in the second locked state, the linkage rod 510 is disengaged from the slot 311, so that the connecting member 310 and the adjusting member 410 are no longer linked. The linkage rod 510 cooperates with the adjusting member 410 and the connecting member 310 through the installation hole 411 and the slot 311, so that the connection between the linkage rod 510 and the adjusting member 410 and the connecting member 310 is closer along the axial direction of the adjusting member 410, and further the linkage effect between the connecting member 310 and the adjusting member 410 is good.

[0043] In this embodiment, the linkage rod 510 includes a stopper 511 and a rod body 512. When the driving assembly 520 pushes the stopper 511 towards the connecting member 310, the stopper 511 can push the rod body 512 towards the connecting member 310, so that the rod body 512 is inserted into the slot 311 of the connecting member 310. The stopper 511 can increase the area of the end of the rod body 512, thereby increasing the area of the linkage rod 510 in contact with the driving assembly 520, making it extremely easy to align the driving assembly 520 with the linkage rod 510 during installation, reducing the assembly difficulty, and at the same time ensuring that the driving assembly 520 can stably push the linkage rod 510. The stopper 511 and the rod body 512 in this embodiment can be integrally provided or separately provided. Preferably, the stopper 511 and the rod body 512 are separately provided, that is, the stopper 511 is slidably connected to the base 100, so that the stopper 511 can only move along the axial direction of the rod body 512 on the base to approach or move away from the rod body 512. When the driving assembly 520 pushes the stopper 511 towards the rod body 512, the stopper 511 pushes the rod body 512 towards the connecting member 310 by abutting against the end of the rod body 512. When the connecting member 310, the adjusting member 410, and the rod body 512 move along the axial direction of the connecting member 310, the stopper 511 separately provided from the rod body 512 will not hinder the linkage of the connecting member 310 and the adjusting member 410, with a simple structure and stable operation.

[0044] In this embodiment, the linkage member 500 further includes an elastic reset member 530. One end of the rod body 512 facing the stopper 511 is provided with a head having an outer diameter larger than that of the rod body 512. The elastic reset member 530 is sleeved on the rod body 512. One end of the elastic reset member 530 abuts against the head of the rod body 512, and the other end abuts against the base 100 of the lock body. When the driving assembly 520 pushes the linkage rod 510 to be inserted into both the connecting member 310 and the adjusting member 410 at the same time, the elastic reset member 530 is compressed under the extrusion of the linkage rod 510 and the lock body; when the driving assembly 520 no longer pushes the linkage rod 510, the elastic reset member 530 pushes the linkage rod 510 towards the driving assembly 520, so that the linkage rod 510 is disengaged from the connecting member 310, and the connecting member 310 and the adjusting member 410 are no longer linked. The setting of the elastic reset member 530 enables the elastic reset member 530 to assist the linkage rod 510 to disengage from the connecting member 310 without the drive of the driving assembly 520, so as to ensure the smooth switching of the linkage rod 510 between two positions, and further ensure that the door lock can stably switch between the first locked state and the second locked state, and the work is more stable and reliable.

[0045] The drive assembly 520 in this embodiment includes a motor and a cam 521. The cam 521 is connected to the output shaft of the motor, and the motor drives the cam 521 to rotate through the output shaft. When the end of the cam 521 facing the stopper 511 changes from the proximal end of the cam 521 (the end with the edge closest to the axis of rotation of the cam 521) to the distal end of the cam 521 (the end with the edge farthest from the axis of rotation of the cam 521), the cam 521 pushes the linkage rod 510 towards the connecting member 310. As Figure 2 shown, the cam 521 abuts against the stopper 511 through the distal end, so that the rod body 512 is simultaneously inserted into both the adjusting member 410 and the connecting member 310, thereby enabling the connecting member 310 and the adjusting member 410 to be interlocked; when the end of the cam 521 close to the stopper 511 changes from the distal end to the proximal end, the cam 521 forms an avoidance of the stopper 511 through the proximal end, such that there is a certain space between the stopper 511 and the cam 521. The elastic reset member 530 can push the rod body 512 towards the cam 521. The rod body 512 abuts against the stopper 511 to push the stopper 511 towards the cam 521. The setting of the structure of the cam 521 enables the drive assembly 520 to either push the stopper 511 through the distal end of the cam 521 or form an avoidance of the stopper 511 through the proximal end of the cam 521 during the rotation of the cam 521, making the movement of the linkage rod 510 smoother.

[0046] As Figure 2 and Figure 3 shown, in this embodiment, a limiting groove 412 is provided at one end of the adjusting member 410 facing the second spring 420. One end of the second spring 420 is embedded in the limiting groove 412 and abuts against the inner wall of the limiting groove 412, and the other end abuts against the base 100 of the lock body. The setting of the limiting groove 412 facilitates the installation and positioning of the adjusting member 410 and the second spring 420 while limiting the second spring 420, so that the second spring 420 always abuts against the adjusting member 410, enabling the door lock in the first locked state to stably increase the force required to open the machine door through the second spring 420 to prevent the machine door from being pushed open by clothes.

[0047] As Figure 4As shown, in this embodiment, a first sliding groove 110 and a second sliding groove 120 are provided on the lock body. The first sliding groove 110 and the second sliding groove 120 are arranged side by side. The connecting member 310 is slidably connected in the first sliding groove 110 and is adapted to the shape of the first sliding groove 110. The first sliding groove 110 can guide the movement of the connecting member 310. The adjusting member 410 is slidably connected in the second sliding groove 120 and is adapted to the shape of the second sliding groove 120. The second sliding groove 120 can guide the movement of the adjusting member 410. The sides of the first sliding groove 110 and the second sliding groove 120 are connected to reserve space for the linkage rod 510. The linkage rod 510 passes through the connected side of the first sliding groove 110 and the second sliding groove 120 to be inserted into both the adjusting member 410 and the connecting member 310 at the same time. When the adjusting member 410 and the connecting member 310 move axially, the linkage rod 510 can also slide at the connected position of the first sliding groove 110 and the second sliding groove 120 to move along with the adjusting member 410 and the connecting member 310. The arrangement of the first sliding groove 110 and the second sliding groove 120 enables the connecting member 310 and the adjusting member 410 to slide only on a defined path, ensuring the distance between the connecting member 310 and the adjusting member 410, so as to ensure that the linkage rod 510 can be stably inserted into or disengaged from the connecting member 310, thereby ensuring the stable operation of the machine. In this embodiment, the cross-sections of the connecting member 310 and the adjusting member 410 are non-circular to prevent the connecting member 310 from freely rotating in the first sliding groove 110 or the adjusting member 410 from freely rotating in the second sliding groove 120, and to ensure the accurate alignment of the mounting hole 411 and the slot 311 when the linkage rod 510 is inserted into the mounting hole 411 and the slot 311.

[0048] In this embodiment, two groups of first elastic members 300 and second elastic members 400 are provided. The two groups of first elastic members 300 and second elastic members 400 are respectively located at both ends of the lock core 200. That is, the structures at both ends of the lock core 200 are the same, and each end is provided with a first elastic member 300 and a second elastic member 400. The arrangement of the two groups of first elastic members 300 and second elastic members 400 makes the forces at both ends of the lock core 200 more uniform, the operation of the lock core 200 more stable, and avoids the lock core 200 from being stuck due to excessive force on one side.

[0049] Embodiment Two:

[0050] The difference between this embodiment and Embodiment One is that in this embodiment, an I-shaped slider and an I-shaped groove are respectively provided at the end portions of the block and the rod body. The I-shaped slider and the I-shaped groove cooperate to enable the block and the rod body to be slidably connected. The rod body can slide on the block along the moving direction of the connecting member, and at the same time, the block can also drive the rod body to move radially along the connecting member to drive the rod body to be inserted into or disengaged from the connecting member.

[0051] In this embodiment, the driving component is a linear actuator such as a cylinder or an electric push rod. The output shaft of the linear actuator is connected to the stopper, so that the stopper is fixed at the end of the output shaft of the linear actuator. When the output shaft expands and contracts, the stopper moves with the output shaft of the linear actuator to drive the rod body to be inserted into or disengaged from the connecting piece, so that it is not necessary to additionally provide other structures to assist the linkage rod, and the linkage rod can be smoothly inserted into or disengaged from the connecting piece, with a simple structure and stable operation.

[0052] Embodiment 3:

[0053] A household appliance includes a body and a door. The door is rotatably connected to the body to open or cover the body by rotation, and further includes the door lock in Embodiment 1 or Embodiment 2. The lock body is arranged on the body, and the door hook is arranged on the door.

[0054] The household appliance in this embodiment can be any one of a washing machine, a clothes dryer, and a washing and drying integrated machine.

[0055] The above are only the preferred embodiments of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions falling within the idea of the present invention belong to the protection scope of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A door lock for a household appliance, comprising a lock body and a door hook, wherein the lock body comprises a movable lock core and a first elastic component, and when the door hook is inserted into the lock body and locked by the lock core, the first elastic component acts on the lock core to keep the lock core locking the door hook, characterized in that: The lock body also includes a linkage component and a second elastic component arranged side by side with the first elastic component. The door lock has a first locked state and a second locked state. When the door lock is in the first locked state, the linkage component connects the first elastic component and the second elastic component so that the unlocking action of the door hook compresses the first elastic component and the second elastic component at the same time; when the door lock is in the second locked state, the linkage component releases the first elastic component so that the unlocking action of the door hook compresses the first elastic component.

2. A door lock for household appliances according to claim 1, characterized in that: The first elastic component includes a connecting piece connected to the lock core and a first spring abutting between the connecting piece and the lock body, and the second elastic component includes an adjusting piece and a second spring abutting between the adjusting piece and the lock body. When the door lock is in the first locking state, the connecting piece and the adjusting piece are connected through the linkage component to jointly squeeze the first spring and the second spring.

3. A door lock for household appliances according to claim 2, characterized in that: The linkage component includes a linkage rod and a driving assembly. When the door lock is in the first locking state, the driving assembly pushes the linkage rod to be plugged into the connecting member and the adjusting member along the radial direction of the connecting member.

4. A door lock for household appliances according to claim 3, characterized in that: The adjusting member is provided with a mounting hole which penetrates the adjusting member in a radial direction thereof, the connecting member is provided with a slot on a side facing the adjusting member, the linkage rod passes through the mounting hole and is inserted into the slot, so that the connecting member and the adjusting member are linked.

5. A door lock for household appliances according to claim 3, characterized in that: The linkage rod comprises a stopper and a rod body, and the driving assembly drives the rod body to be plugged into the adjusting member and the connecting member by pushing the stopper.

6. A door lock for household appliances according to claim 3, characterized in that: The linkage component further comprises an elastic reset member, two ends of which are respectively against the linkage rod and the lock body, so as to push the linkage rod to be disengaged from the connecting member.

7. A door lock for a household appliance according to any one of claims 3 to 6, characterized in that: The driving assembly includes a motor and a cam connected to an output shaft of the motor. The motor drives the cam to rotate so as to push the connecting rod to be plugged into the first elastic component through the cam.

8. A door lock for a household appliance according to any one of claims 3 to 6, characterized in that: The driving assembly is a linear actuator, and the output shaft of the linear actuator is connected to the connecting rod to drive the connecting rod to be plugged into or disconnected from the first elastic component.

9. A door lock for household appliances according to claim 2, characterized in that: The adjusting member is provided with a limiting groove, and one end of the second spring close to the adjusting member is embedded in the limiting groove.

10. A door lock for household appliances according to claim 2, characterized in that: The lock body is provided with a first slide groove and a second slide groove which are connected at the side, the connecting member is slidably connected in the first slide groove, and the adjusting member is slidably connected in the second slide groove.

11. A household appliance, comprising a body and a door, characterized in that: It also includes the door lock according to any one of claims 1 to 10, wherein the lock body is arranged on the machine body, and the door hook is arranged on the machine door.

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