Door lock and household appliance

Abstract

The invention discloses a door lock and a household appliance, and relates to the technical field of door locks, the door lock comprises a lock shell, a cam is rotatably arranged in the lock shell, and the cam is provided with a locking matching structure; the lock catch is movably arranged in the lock shell, and the lock catch is matched with the locking matching structure to lock and unlock the cam; when the door hook pushes the cam to turn over for the first time, the locking matching structure guides the lock catch to move to the locking position, and when the door hook pushes the cam to turn over for the second time, the lock catch moves to the unlocking position. The blocking piece is movably arranged in the lock shell and used for blocking the lock catch from moving from the locking position to the unlocking position. The heart-shaped sliding block is arranged in the lock shell and used for limiting the blocking piece to move towards the unlocking position. According to the technical scheme, the safety of the door lock is improved through the arrangement of the blocking piece, and the blocking end of the blocking piece can prevent the lock catch from accidentally moving towards the unlocking position from the locking position. Even under the condition of external force impact or misoperation, the blocking piece can ensure that the lock catch is kept at the locking position, and the door is prevented from being opened accidentally.

Description

Technical Field

[0001] The present invention relates to the technical field of door locks, and in particular to a door lock and household electrical appliance. Background Art

[0002] Home appliances like washing machines require a door panel with an opening and closing function to close, and the door panel is locked with a door lock. Some washing machines have a setting that allows you to lock the door panel by simply pressing it, and unlock it by pressing it again.

[0003] For example, Chinese patent document CN107245846B discloses a door lock rotation device and a washing machine door lock. This device locks the door hook via a rotating member, which in turn locks itself via a lock catch. The rotating member is equipped with a locking mechanism that achieves the following functions: pressing the door panel for the first time locks the door; pressing the door panel again unlocks the door.

[0004] However, in the above solution, during normal operation, when the door panel is pressed again, there may be a problem that the lock catch cannot continue to lock the rotating member. Specifically, when the door panel is pressed again, the latch teeth of the lock catch may disengage the locked position along the locking mating structure. Summary of the Invention

[0005] In view of this, the present invention provides a door lock and a household appliance to solve the problem that the lock catch is out of the locked position when the door panel is pressed again during normal operation.

[0006] The present invention provides a door lock, comprising:

[0007] Lock case;

[0008] A cam is rotatably disposed in the lock housing, the cam locks the door hook by flipping, and the cam has a locking matching structure;

[0009] a lock catch, movably disposed in the lock housing, the lock catch being engaged with the locking cooperation structure to lock and unlock the cam, the lock catch having a locked position for locking the cam and an unlocked position for releasing the lock of the cam; when the door hook pushes the cam to flip for the first time, the locking cooperation structure guides the lock catch to move to the locked position, and when the door hook pushes the cam to flip for the second time, the locking cooperation structure guides the lock catch to move to the unlocked position;

[0010] a blocking member movably disposed in the lock housing, the blocking member having a blocking end for blocking the lock catch from moving from the locked position toward the unlocked position;

[0011] A heart-shaped slider is arranged in the lock housing, and the heart-shaped slider has a blocking portion, which cooperates with the blocking member to limit the blocking member from moving toward the unlocking position.

[0012] The technical solution of the present invention enhances the security of the door lock by providing a blocking member. The blocking end prevents the lock catch from accidentally moving from the locked position to the unlocked position. Even in the event of external impact or misoperation, the blocking member ensures that the lock catch remains in the locked position, preventing the door from accidentally opening.

[0013] Optionally, the blocking member is rotatably arranged in the lock housing, the blocking end of the blocking member is located at one end of the rotating shaft, and the other end of the blocking member has an operating part for cooperating with the heart-shaped slider, and the side surface of the operating part cooperates with the blocking part of the heart-shaped slider.

[0014] In this solution, the blocking member is pivotally mounted within the lock housing. Compared to sliding or other connection methods, this pivoting connection is more stable when subjected to external forces. The pivoting shaft provides reliable support for the blocking member, preventing it from loosening or shifting during frequent blocking and releasing operations. This arrangement ensures that the pivoting blocking member maintains its structural integrity and stability over extended use, even during the numerous locking and unlocking cycles the door lock undergoes, reducing the risk of lock failures due to loose components.

[0015] Optionally, the door lock further comprises a biasing member connected to the blocking member, the biasing member exerting a biasing force to drive the blocking member so that its blocking end always abuts against the side of the lock catch. With this arrangement, when the door lock is locked, regardless of any external interference, such as vibration or impact, the biasing force generated by the biasing member ensures that the blocking member firmly prevents the lock catch from moving from the locked position to the unlocked position.

[0016] Optionally, the biasing member is a compression spring, one end of which abuts the lock housing, and the other end of which abuts the end of the blocking member distal from the lock catch. The compression spring exhibits excellent elastic deformation. When the lock catch undergoes slight displacement due to long-term use or changes position due to external forces, the compression spring can adaptively adjust by compressing or extending itself. It automatically adjusts the direction and magnitude of the biasing force on the blocking member based on changes in the lock catch's position, ensuring that the blocking end always maintains close contact with the side of the lock catch.

[0017] Optionally, the blocking member has an inclined surface for abutting the compression spring. The design of the inclined surface allows the force applied by the compression spring to act on the blocking member in a specific direction. Compared with a flat abutment, it can better guide the direction of the biasing force and ensure that the blocking end of the blocking member stably abuts against the side of the lock.

[0018] Optionally, an electrical box is provided in the lock housing, and the heart-shaped slider is slidably disposed in the electrical box, with the blocking portion of the heart-shaped slider extending out of the electrical box and cooperating with the blocking member. The electrical box is provided in the lock housing to provide physical protection for any electronic components that may be present therein. Placing the heart-shaped slider in the electrical box achieves structural integration. This design allows for more rational utilization of the internal space of the door lock, with the various components arranged compactly and orderly. Different functional components work together in relatively independent spaces, reducing the possibility of mutual interference and facilitating the overall manufacture, installation, and maintenance of the door lock.

[0019] Optionally, the blocking member extends in a direction parallel to the rotational plane of the cam, and the sliding direction of the heart-shaped slider is parallel to the extending direction of the blocking member. This layout allows for a more orderly arrangement of the components within the door lock. Arranging the components on the same plane effectively reduces space occupied in directions perpendicular to that plane.

[0020] Optionally, an unlocking slider is provided between the lock shell and the electrical box, one end of the unlocking slider extends out of the lock shell, and the other end extends into the electrical box to cooperate with the heart-shaped slider, and the sliding direction of the unlocking slider is parallel to the sliding direction of the heart-shaped slider. One end of the unlocking slider extends out of the lock shell, which is convenient for the user to operate directly from the outside. Whether using a key, a knob or other unlocking method, the user only needs to operate the unlocking slider extending out of the lock shell to easily trigger the internal unlocking mechanism. The setting of the unlocking slider cleverly utilizes the space between the lock shell and the electrical box. It connects external operation with internal response without taking up too much extra space. This compact design makes more efficient use of the internal space of the door lock, which helps to maintain the compactness of the overall structure of the door lock.

[0021] Optionally, the lock housing has a lock hole for inserting a door hook, and the circumference of the lock hole has a mounting portion protruding outward for inserting into the mounting hole of the door panel, the first side of the mounting portion has a first card slot for inserting the door panel, and the second side of the mounting portion has a second card slot for inserting the door panel, and the first side and / or the second side have an elastic button, and the elastic button is used to elastically abut the door panel. The design of the mounting portion, the card slot and the elastic button makes the installation process of the door lock relatively simple. The installer only needs to insert the mounting portion into the mounting hole of the door panel, and use the elastic force of the elastic button to automatically adjust the position and fix it, without the need for complicated positioning and fastening operations, thereby improving installation efficiency. If the door lock fails and needs to be replaced, the disassembly process is also relatively convenient due to the elastic connection of the elastic button. The mounting portion can be easily pulled out of the mounting hole of the door panel, which facilitates the repair or replacement of the door lock and reduces maintenance costs.

[0022] Optionally, the elastic key moves parallel to the door panel. This parallel movement of the elastic key helps to better fill the gap between the lock housing and the door panel. During use, as the door opens and closes, the lock housing and the door panel may experience relative displacement. The parallel movement of the elastic key dynamically adapts to this displacement, ensuring the stability of the lock housing within the mounting hole of the door panel.

[0023] The present invention also provides a household appliance, comprising: a door lock according to any one of the above solutions. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0025] Figure 1 A three-dimensional diagram of a door lock provided by an embodiment of the present invention;

[0026] Figure 2 for Figure 1 A perspective view of the middle cam;

[0027] Figure 3 for Figure 1 A three-dimensional image from an upward angle with the lock case hidden in the middle;

[0028] Figure 4 for Figure 3 A perspective view of the middle blocking member;

[0029] Figure 5 for Figure 1 A three-dimensional image of the electrical box and the heart-shaped slider inside it;

[0030] Figure 6 A bottom-up perspective view of a door lock provided by an embodiment of the present invention;

[0031] Figure 7 for Figure 6 main view.

[0032] Description of reference numerals:

[0033] 1. Lock housing; 2. Cam; 3. Lock catch; 4. Blocking member; 5. Heart-shaped slider; 6. First guide surface; 7. First blocking surface; 8. Second guide surface; 9. Locking surface; 10. Second blocking surface; 11. Top surface of first blocking surface; 12. Third guide surface; 13. Blocking end; 14. Operating part; 15. Blocking part; 16. Inclined surface; 17. Electrical box; 18. Unlocking slider; 19. Lock hole; 20. Mounting part; 21. First card slot; 22. Second card slot; 23. Elastic button. DETAILED DESCRIPTION

[0034] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts shall fall within the scope of protection of the present invention.

[0035] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0036] In the description of the present invention, it should be noted that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they may refer to fixed connections, detachable connections, or integral connections; and they may refer to direct connections or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0037] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0038] like Figure 1 As shown, a specific implementation of the door lock provided in this embodiment includes: a lock housing 1, a cam 2, a lock catch 3, a blocking member 4 and a heart-shaped slider 5; the cam 2 is rotatably arranged in the lock housing 1, and the cam 2 locks the door hook by flipping, and the cam 2 has a locking matching structure.

[0039] like Figure 2As shown, the locking and mating structure includes: a first guide surface 6, a first blocking surface 7, a second guide surface 8, a locking surface 9, a second blocking surface 10, a top surface 11 of the first blocking surface, and a third guide surface 12. When the cam 2 flips upward, the first guide surface 6 guides the lock catch 3 to move away from the unlocked position. The first blocking surface 7 is located at the end of the first guide surface 6. The first blocking surface 7 extends a certain length along the circumference of the cam 2 and retracts a certain distance toward the unlocked position. The first blocking surface 7 is used to block the lock catch 3 when the lock catch 3 passes the end of the first guide surface 6, thereby preventing the lock catch 3 from moving directly to the unlocked position.

[0040] like Figure 2 As shown, the second guide surface 8 is tilted and connected to the first blocking surface 7. The second guide surface 8 is used to guide the lock buckle 3 blocked by the first blocking surface 7 to escape from the blockage of the first blocking surface 7 after the door closing action is completed.

[0041] like Figure 2 As shown, the bottom end of the locking surface 9 is connected to the top end of the second guide surface 8, and the locking surface 9 is used to receive the lock buckle 3 that has separated from the first blocking surface 7, so that it can continue to move toward the unlocking position.

[0042] like Figure 2 As shown, the second blocking surface 10 is connected to the locking surface 9 and is located at the end of the locking surface 9 . The second blocking surface 10 is used to block the lock buckle 3 at the end of the locking surface 9 .

[0043] like Figure 2 As shown, the top surface 11 of the first blocking surface is connected to the bottom end of the locking surface 9, and the top surface 11 of the first blocking surface is located on the side of the second guide surface 8 close to the unlocking position, and the height is less than or equal to the top height of the second guide surface 8. The top surface 11 of the first blocking surface is used to receive the lock buckle 3 that has escaped the obstruction of the first blocking surface 7.

[0044] like Figure 2 As shown, the bottom end of the third guide surface 12 is connected to the top surface 11 of the first blocking surface, and the third guide surface 12 is located on the side of the second blocking surface 10 close to the unlocking position. The third guide surface 12 is used to guide the lock buckle 3 to move to the unlocking position after the lock buckle 3 passes the obstruction of the second blocking surface 10.

[0045] like Figure 1As shown, the lock catch 3 is movably arranged in the lock housing 1, and the lock catch 3 locks and unlocks the cam 2 by cooperating with the locking matching structure. The lock catch 3 has a locking position for locking the cam 2, and also has an unlocking position for releasing the lock of the cam 2; when the door hook pushes the cam 2 to flip for the first time, the locking matching structure guides the lock catch 3 to move to the locking position, and when the door hook pushes the cam 2 to flip for the second time, the locking matching structure guides the lock catch 3 to move to the unlocking position.

[0046] like Figure 3 、 Figure 4 As shown, the blocking member 4 is movably disposed within the lock housing 1, and the blocking member 4 has a blocking end 13 for blocking the lock catch 3 from moving from the locked position to the unlocked position. Specifically, in this embodiment, the blocking member 4 is rotatably disposed within the lock housing 1, the blocking end 13 of the blocking member 4 is located at one end of a rotating shaft, and the other end of the blocking member 4 has an operating portion 14 for cooperating with the heart-shaped slider 5.

[0047] like Figure 3 As shown, the heart-shaped slider 5 has a blocking portion 15, which cooperates with the side of the operating portion 14 of the blocking member 4 to limit the movement of the blocking member 4 toward the unlocking position.

[0048] In the above solution, the blocking member 4 is pivotally mounted within the lock housing 1. Compared to some sliding or other connection methods, this pivoting connection is more stable when subjected to external forces. The pivoting shaft provides reliable support for the blocking member 4, making it less susceptible to loosening or displacement during frequent blocking and releasing operations. This arrangement ensures that the pivoting blocking member 4 maintains its structural integrity and stability during long-term use, even when the door lock undergoes multiple locking and unlocking cycles, reducing the risk of door lock failures due to loose components.

[0049] The technical solution of this embodiment enhances the security of the door lock by providing a blocking member 4. Its blocking end 13 prevents the lock catch 3 from accidentally moving from the locked position to the unlocked position. Even in the event of external impact or misoperation, the blocking member 4 ensures that the lock catch 3 remains in the locked position, preventing the door from accidentally opening.

[0050] like Figure 3 、 Figure 4As shown, this embodiment further includes a biasing member connected to the blocking member 4. The biasing member exerts a biasing force that drives the blocking member 4 so that its blocking end 13 always abuts against the side of the lock catch 3. With this arrangement, when the door lock is locked, the biasing force generated by the biasing member ensures that the blocking member 4 firmly blocks the lock catch 3 from moving from the locked position to the unlocked position regardless of any external interference, such as vibration or impact.

[0051] It should be noted that in this embodiment, the biasing member is a compression spring, one end of which abuts the lock housing 1, and the other end of which abuts the end of the blocking member 4 facing away from the lock catch 3. The compression spring has excellent elastic deformation capabilities. When the lock catch 3 undergoes slight displacement due to long-term use or changes position due to external forces, the compression spring can adaptively adjust by compressing or extending itself. It automatically adjusts the direction and magnitude of the biasing force on the blocking member 4 based on the changes in the position of the lock catch 3, ensuring that the blocking end 13 is always in close contact with the side of the lock catch 3.

[0052] like Figure 4 As shown, in some embodiments, the blocking member 4 has an inclined surface 16 for abutting the compression spring. The design of the inclined surface 16 allows the force applied by the compression spring to act on the blocking member 4 in a specific direction. Compared with a flat abutment, it can better guide the direction of the biasing force and ensure that the blocking end 13 of the blocking member 4 stably abuts against the side of the lock 3.

[0053] like Figure 1 、 Figure 5 As shown, the lock housing 1 has an electrical box 17, and the heart-shaped slider 5 is slidably arranged in the electrical box 17. The blocking portion 15 of the heart-shaped slider 5 extends out of the electrical box 17 and cooperates with the blocking member 4. The electrical box 17 is arranged in the lock housing 1 to provide physical protection for the electronic components that may be present inside. The heart-shaped slider 5 is arranged in the electrical box 17 to achieve structural integration. This design makes more reasonable use of the internal space of the door lock, and the layout of each component is compact and orderly. Different functional components work together in relatively independent spaces, reducing the possibility of mutual interference, and also facilitating the overall manufacturing, installation and maintenance of the door lock.

[0054] It should be noted that in this embodiment, the extending direction of the blocking member 4 is parallel to the rotational plane of the cam 2, and the sliding direction of the heart-shaped slider 5 is parallel to the extending direction of the blocking member 4. This layout makes the spatial arrangement of the internal components of the door lock more orderly. The components are arranged on the same plane, effectively reducing the space occupied in the direction perpendicular to this plane.

[0055] like Figure 5As shown, in some embodiments, an unlocking slider 18 is provided between the lock housing 1 and the electrical box 17, one end of the unlocking slider 18 extends out of the lock housing 1, and the other end extends into the electrical box 17 to cooperate with the heart-shaped slider 5, and the sliding direction of the unlocking slider 18 is parallel to the sliding direction of the heart-shaped slider 5. One end of the unlocking slider 18 extends out of the lock housing 1, which is convenient for the user to operate directly from the outside. Whether using a key, a knob or other unlocking method, the user only needs to operate the unlocking slider 18 extending out of the lock housing 1 to easily trigger the internal unlocking mechanism. The setting of the unlocking slider 18 cleverly utilizes the space between the lock housing 1 and the electrical box 17. It does not take up too much extra space while realizing the connection between external operation and internal response. This compact design makes more efficient use of the internal space of the door lock, which helps to maintain the compactness of the overall structure of the door lock.

[0056] like Figure 6 、 Figure 7 In some embodiments, the lock housing 1 has a lock hole 19 for inserting a door hook. The lock hole 19 has a mounting portion 20 protruding outwardly around the periphery for insertion into a mounting hole in a door panel. A first side of the mounting portion 20 has a first slot 21 for inserting into the door panel, and a second side of the mounting portion 20 has a second slot 22 for inserting into the door panel. A resilient button 23 is provided on the first and / or second sides, and is configured to elastically abut against the door panel. The design of the mounting portion 20, the slot, and the resilient button 23 makes installation of the door lock relatively simple. The installer simply inserts the mounting portion 20 into the door panel mounting hole, where the elastic force of the resilient button 23 automatically adjusts the position and secures the door panel, eliminating the need for complex positioning and tightening operations, thus improving installation efficiency. If the door lock malfunctions and needs to be replaced, the resilient connection of the resilient button 23 facilitates removal. The mounting portion 20 can be easily removed from the door panel mounting hole, facilitating repair or replacement, reducing maintenance costs.

[0057] like Figure 7 As shown, the elastic button 23 moves parallel to the door panel. This movement of the elastic button 23 parallel to the door panel helps better fill the gap between the lock housing 1 and the door panel. During use, as the door opens and closes, the lock housing 1 and the door panel may experience relative displacement. The parallel movement of the elastic button 23 dynamically adapts to this displacement, ensuring the stability of the lock housing 1 within the mounting hole of the door panel.

[0058] Working principle:

[0059] Locking of cam 2 and lock catch 3: Cam 2 rotates within lock housing 1, locking the door hook by flipping. The locking mating structure on cam 2 cooperates with lock catch 3 to complete the locking and unlocking of the door lock. When the door hook pushes cam 2 to flip for the first time, the first guide surface 6 in the locking mating structure guides lock catch 3 to move away from the unlocked position. Then, lock catch 3 passes the end of first guide surface 6 and is blocked by first blocking surface 7, preventing it from moving directly to the unlocked position. After the door closing action is completed, the second guide surface 8 guides the blocked lock catch 3 to disengage from the obstruction of first blocking surface 7. Lock catch 3 is then received by locking surface 9 and can continue to move toward the unlocked position. When it reaches the end of locking surface 9, it is blocked in the locked position by second blocking surface 10. When the door hook pushes cam 2 to flip for the second time, lock catch 3 passes the second blocking surface 10 and moves to the unlocked position under the guidance of third guide surface 12, completing the unlocking.

[0060] Stopper 4 is movably mounted within lock housing 1 and pivotally connected. Its blocking end 13 prevents the lock catch 3 from accidentally moving from the locked position to the unlocked position. Even if the door lock is subjected to external force or misoperation, stopper 4 ensures that the lock catch 3 remains locked, preventing the door from accidentally opening. The operating portion 14 of stopper 4 engages with the blocking portion 15 of the heart-shaped slider 5, restricting movement of stopper 4 toward the unlocked position.

[0061] A biasing member (compression spring) is connected to the blocking member 4, providing a biasing force to keep the blocking end 13 in close contact with the side of the lock catch 3. The compression spring's excellent elastic deformation allows it to automatically adjust the direction and magnitude of the biasing force on the blocking member 4 according to the position of the lock catch 3, ensuring that the blocking effect is not affected by the movement of the lock catch 3.

[0062] The blocking member 4 extends parallel to the rotating surface of the cam 2, and the heart-shaped slider 5 slides parallel to the blocking member 4. This layout spatially arranges the internal components of the door lock, reducing vertical space usage. An electrical box 17 within the lock housing 1 provides protection for the electronic components while achieving structural integration. The heart-shaped slider 5 is housed within the box 17, with its blocking portion 15 extending to engage the blocking member 4. These components operate collaboratively in relatively independent spaces, minimizing mutual interference and facilitating manufacturing, installation, and maintenance.

[0063] How the unlocking slider 18 works: It's located between the lock housing 1 and the electrical box 17. One end extends out of the lock housing 1, allowing for direct operation with a key, knob, or other means. The other end extends into the electrical box 17 to engage the heart-shaped slider 5. Operating the unlocking slider 18 triggers the internal unlocking mechanism, and this design efficiently utilizes space, keeping the overall structure of the door lock compact.

[0064] Door Lock Installation: Insert the mounting portion 20 of the lock housing 1 into the door panel mounting hole through the first and second slots 21 and 22. The elastic button 23 elastically abuts against the door panel, simplifying installation and removal. The elastic button 23 moves parallel to the door panel, dynamically adapting to the relative displacement of the lock housing 1 and the door panel during door opening and closing, ensuring a secure installation.

[0065] This embodiment further provides a household appliance, including: the above-mentioned door lock, which can be installed in the installation hole of the door panel to cooperate with the door hook. Specifically, the household appliance may include: a washing machine, a clothes dryer, etc.

[0066] Although the embodiments of the present invention have been described with reference to the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations shall all fall within the scope defined by the present invention.

Claims

1. A door lock, characterized in that: include: Lock housing (1); A cam (2) is rotatably arranged in the lock housing (1), and the cam (2) locks the door hook by turning over, and the cam (2) has a locking matching structure; A lock catch (3) is movably arranged in the lock housing (1), and the lock catch (3) locks and unlocks the cam (2) by cooperating with the locking matching structure. The lock catch (3) has a locking position for locking the cam (2) and an unlocking position for releasing the lock of the cam (2); when the door hook pushes the cam (2) to flip for the first time, the locking matching structure guides the lock catch (3) to move to the locking position, and when the door hook pushes the cam (2) to flip for the second time, the locking matching structure guides the lock catch (3) to move to the unlocking position; a blocking member (4) movably disposed in the lock housing (1), the blocking member (4) having a blocking end (13) for blocking the lock catch (3) from moving from the locked position toward the unlocked position; A heart-shaped slider (5) is arranged in the lock housing (1), and the heart-shaped slider (5) has a blocking portion (15). The blocking portion (15) cooperates with the blocking member (4) to limit the blocking member (4) from moving toward the unlocking position.

2. The door lock according to claim 1, characterized in that The blocking member (4) is rotatably arranged in the lock housing (1), the blocking end (13) of the blocking member (4) is located at one end of the rotating shaft, and the other end of the blocking member (4) has an operating portion (14) for cooperating with the peach-shaped slider (5), and the side surface of the operating portion (14) cooperates with the blocking portion (15) of the peach-shaped slider (5).

3. The door lock according to claim 2, characterized in that: Also includes: A biasing member is connected to the blocking member (4), and the biasing member has a biasing force that drives the blocking member (4) so ​​that its blocking end (13) always abuts against the side of the lock buckle (3).

4. The door lock according to claim 3, characterized in that: The biasing member is a compression spring, one end of which abuts against the lock housing (1), and the other end of which abuts against an end of the blocking member (4) away from the lock catch (3).

5. The door lock according to claim 4, characterized in that: The blocking member (4) has an inclined surface (16) for contacting the compression spring.

6. The door lock according to any one of claims 1 to 5, characterized in that: The lock housing (1) has an electrical box (17) in it, the heart-shaped slider (5) is slidably arranged in the electrical box (17), and the blocking portion (15) of the heart-shaped slider (5) extends out of the electrical box (17) to cooperate with the blocking member (4).

7. The door lock according to claim 6, characterized in that: The extending direction of the blocking member (4) is parallel to the rotating surface of the cam (2), and the sliding direction of the heart-shaped slider (5) is parallel to the extending direction of the blocking member (4).

8. The door lock according to claim 7, characterized in that: An unlocking slider (18) is provided between the lock housing (1) and the electrical box (17), one end of the unlocking slider (18) extends out of the lock housing (1), and the other end extends into the electrical box (17) to cooperate with the heart-shaped slider (5), and the sliding direction of the unlocking slider (18) is parallel to the sliding direction of the heart-shaped slider (5).

9. The door lock according to any one of claims 1 to 5, characterized in that: The lock housing (1) has a lock hole (19) for inserting a door hook, and the lock hole (19) has a mounting portion (20) protruding outward around the periphery for inserting into the mounting hole of the door panel, a first side of the mounting portion (20) has a first card slot (21) for inserting the door panel, and a second side of the mounting portion (20) has a second card slot (22) for inserting the door panel, and an elastic button (23) is provided on the first side and / or the second side, and the elastic button (23) is used for elastically abutting the door panel.

10. The door lock according to claim 9, characterized in that: The moving direction of the elastic button (23) is parallel to the door panel.

11. A household appliance, characterized in that: include: The door lock according to any one of claims 1 to 10.

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