Door lock and household appliance

Abstract

The door lock comprises a bottom shell, an upper cover and an electric appliance control box are arranged above the bottom shell, a protruding door lock opening is formed in the bottom of the bottom shell, and a rotatable hook wheel is arranged between the upper cover and the door lock opening; a first clamping step and a second clamping step with upward openings are arranged on the edges of the two sides of the door lock opening respectively, and an installation switching sliding block is arranged above the first clamping step. A locking sliding block and a door sensing sliding block which are sequentially distributed forwards are arranged between the electric appliance control box and the bottom shell, the door sensing sliding block and the first limiting groove can be in limiting fit to prevent the hook wheel from rotating, and the limiting fit of the door sensing sliding block and the first limiting groove can be relieved through pushing of a door hook. The locking sliding block can be matched with the locking groove in a locking mode. The utility model has the advantages of reasonable structural design, easy installation and disassembly, and beautiful appearance; 2, the hook wheel is prevented from turning over due to misoperation;

Description

Technical Field

[0001] This utility model relates to the field of household appliance technology, and in particular to a door lock and a household appliance. Background Technology

[0002] Some washing machine door locks on the market do not have a device to prevent the door lock hook wheel from accidentally flipping over. This can lead to children, driven by curiosity, unintentionally using sticks or rods to poke the hook wheel, causing it to flip over. In such cases, the door lock needs to be removed from the washing machine by a professional through a complicated disassembly process before it can be restored.

[0003] Furthermore, some washing machine door locks on the market require drilling a door lock mounting hole in the washing machine, or require auxiliary tools for disassembly, or require multiple parts or complex mechanisms to achieve installation and disassembly. Utility Model Content

[0004] The purpose of this utility model is to provide a door lock and a household appliance, so that the door lock on the household appliance (such as a washing machine) is easy to install and remove.

[0005] To achieve the above objectives, the present invention provides a door lock, including a base shell, an upper cover and an electrical control box on the top of the base shell, and a protruding door lock opening at the bottom of the base shell. A rotatable hook wheel is provided between the upper cover and the door lock opening. The two sides of the door lock opening are respectively provided with an upward-facing first locking step and a second locking step. A mounting / switching slider is provided above the first locking step. The mounting / switching slider is rotatably connected to the side wall of the base shell. The mounting / switching slider is provided with an elastic part, a state switching handle, and a sliding rod. Under the drive of the elastic part, the mounting / switching slider has a tendency to rotate in the forward direction. Under the drive of the state switching handle, the installation switching slider tends to rotate in the opposite direction; the side wall of the upper cover is provided with an elastic hook, the movable end of the elastic hook moves downward toward the first locking step, and the middle of the elastic hook is provided with a limiting block, which cooperates with the sliding rod to limit the rotation of the installation switching slider in the forward direction; when the elastic hook is subjected to external force and elastically deforms, the sliding rod and the limiting block are misaligned, the installation switching slider rotates in the forward direction under the drive of the elastic part, and the sliding rod moves downward past the limiting block so that the sliding rod moves downward toward the first locking step.

[0006] Furthermore, the middle part of the installation switching slider is rotatably connected to the side wall of the bottom shell, the slide rod is located on the side of the installation switching slider close to the first locking step, and the elastic part and the state switching handle are located on the side of the installation switching slider away from the first locking step; the elastic hook is located between the slide rod and the side wall of the bottom shell, the limiting block is located on the outer side of the middle part of the elastic hook, and the movable end of the elastic hook is provided with an outwardly protruding pressing part. When the pressing part is subjected to external force, the elastic hook will elastically deform inward.

[0007] Furthermore, the sliding rod is an L-shaped rod with its opening facing downwards, and the side wall of the first locking step is provided with an L-shaped stop block with its opening facing upwards. The L-shaped rod and the L-shaped stop block can form a limiting fit. The upper side of the limiting stop block is a plane, and the lower side of the limiting stop block is an inclined plane. The elastic part is located below the state switching handle. The side wall of the bottom shell is provided with a lower baffle, and the side wall of the upper cover is also provided with an upper baffle. The elastic part and the state switching handle are assembled between the lower baffle and the upper baffle, and the elastic part and the lower baffle can form an elastic fit.

[0008] Furthermore, the two ends of the hook wheel are rotatably connected to the two side walls of the upper cover, respectively. The outer circumference of the hook wheel is provided with a connecting end, a first hook, and a second hook distributed sequentially along the circumferential direction. A locking groove is formed between the connecting end and the first hook, and a door hook groove that can accommodate a door hook is formed between the first hook and the second hook. The second hook is provided with a first limiting groove. An elastic element of the hook wheel is connected between the connecting end and the rear side wall of the upper cover. A locking slider and a door sensing slider are arranged sequentially forward between the electrical control box and the bottom shell. The door sensing slider can be limited to the first limiting groove to prevent the hook wheel from rotating. The limited engagement between the door sensing slider and the first limiting groove can be released by pushing the door hook. The locking slider can be locked to the locking groove.

[0009] Furthermore, one end of the door sensing slider is provided with a second limiting groove, and the first limiting groove and the second limiting groove can cooperate to limit the rotation of the hook wheel. The other end of the door sensing slider is provided with a door sensing elastic element. One end of the locking slider is provided with a locking and unlocking rotating slider, which is rotatably mounted on the bottom shell. The other end of the locking slider is provided with a locking slider elastic element, and the locking slider can drive the locking and unlocking rotating slider to rotate into the locking groove.

[0010] Furthermore, the hook wheel elastic element is a torsion spring, and the torsion spring and the locking / unlocking rotary slider can alternately rest in the locking groove. The first wheel hook can cooperate with the door hook opening. The locking slider elastic element and the door sensing elastic element are springs. The first limiting groove and the second limiting groove are L-shaped grooves. The locking / unlocking rotary slider is an L-shaped block. One end of the locking / unlocking rotary slider is rotatably mounted on the bottom shell. One end of the locking slider is also provided with a drive rod. When the drive rod pushes the locking / unlocking rotary slider to rotate into the locking groove, the drive rod rests in the L-shaped opening of the locking / unlocking rotary slider.

[0011] Furthermore, the bottom wall of the electrical control box is provided with a movable opening, and the interior of the electrical control box is provided with a locking rod that can be extended and retracted vertically. The locking rod passes downward through the movable opening, and the middle of the locking slider is provided with a locking hole. The locking rod can be locked and engaged with the locking hole downward to realize the locking of the hook wheel by the locking and unlocking rotating slider.

[0012] Furthermore, the electrical control box also includes an electromagnetic coil and a plunger. The electromagnetic coil, in conjunction with a return spring, drives the plunger to move back and forth. The plunger has a moving block, and one side of the moving block has a cylinder. The electrical control box also includes a rotating sleeve, which is fitted around the outer circumference of the movable opening. The rotating sleeve has a connecting plate with an elliptical hole through which the cylinder passes, allowing the moving block to drive the rotating sleeve to rotate. The upper end of the locking rod has a flange, and the lower end of the rotating sleeve engages with the inner wall of the electrical control box. The upper end of the rotating sleeve engages with the lower side of the flange. A spring plate is located above the flange. The rotating sleeve can drive the locking rod to move upward, and the spring plate can drive the locking rod to move downward.

[0013] Furthermore, the lower end of the rotating sleeve engages with the inner wall of the electrical control box via several inclined protrusions, and the upper end of the rotating sleeve engages with the lower side of the flange via several inclined protrusions. One side of each inclined protrusion is a slope, and the other side is a vertical surface. A guide pin is provided on the other side of the moving block, and a guide groove is provided on the inner wall of the electrical control box. A first locking position, a second locking position, and an unlocking position are sequentially provided along the path of the guide groove. One end of the guide pin is rotatably connected to the other side of the moving block, and the other end of the guide pin is movably disposed within the guide groove, so that the guide pin controls the telescopic movement distance of the plunger.

[0014] This utility model also provides a household appliance, including a main body of the household appliance, a sealing door on the main body of the household appliance, one end of the main body of the household appliance being rotatably connected to one end of the sealing door; it also includes a door lock as described in any of the above technical solutions, the other end of the main body of the household appliance being provided with a door lock mounting slot, the other end of the sealing door being provided with a door hook, the door lock slot of the door lock being fitted into the door lock mounting slot of the main body of the household appliance in cooperation with the installation switching slider, the door hook being provided with a door hook opening, and the door hook being able to form a locking engagement with the hook wheel.

[0015] In summary, the technical solution of this utility model has the following beneficial effects: The utility model has a reasonable structural design. 1. A top cover and an electrical control box are provided on the top of the bottom shell, and a protruding door lock opening is provided on the bottom of the bottom shell. A rotatable hook wheel is provided between the top cover and the door lock opening; thus, the door hook can extend into the door lock opening and lock with the hook wheel. 2. A first locking step and a second locking step with upward openings are respectively provided on the two sides of the door lock opening. A mounting and switching slider is provided above the first locking step. The mounting and switching slider is rotatably connected to the side wall of the bottom shell. The mounting and switching slider is provided with an elastic part, a state switching handle, and a sliding rod. The mounting and switching slider has a forward rotation tendency under the drive of the elastic part and a reverse rotation tendency under the drive of the state switching handle. An elastic hook is provided on the side wall of the top cover. The movable end of the elastic hook is downward close to the first locking step. A limiting block is provided in the middle of the sliding rod, which is in a limiting cooperation with the sliding rod. The limiting block can prevent the installation switching slider from rotating forward. When the elastic hook is subjected to external force and deforms elastically, the sliding rod and the limiting block are misaligned. The installation switching slider rotates forward under the drive of the elastic part, and the sliding rod passes the limiting block downward so that the sliding rod moves downward closer to the first locking step. Thus, in case (1), that is, when the door lock is not installed, the installation switching slider is blocked by the elastic hook of the upper cover (that is, the limiting cooperation between the block and the sliding rod), so that the door lock installation switching slider is in the open state, waiting for the switch to be installed. Installation; In case (2), i.e., when installing the door lock; the door lock is inserted obliquely into the door lock installation slot reserved in the main body of the household appliance. When the door lock is inserted obliquely into the door lock installation slot until the second locking step is completely blocked by one side edge of the door lock installation slot, the door lock is pushed to the other side. When the door lock is continued to be inserted obliquely, the other side edge of the door lock installation slot will push the elastic hook on the door lock cover, so that the door lock installation switching slider is no longer blocked by the elastic hook of the cover (i.e., the slider and the stop are misaligned). The slider moves downward closer to the first locking step, and finally The sliding rod of the installation switching slider enters between the side wall of the first locking step and the other edge of the door lock mounting opening, achieving almost zero gap, so that the door lock is firmly positioned on the household appliance; while in case (3), that is, when the door lock is disassembled; when the household appliance needs to be disassembled and repaired, the state switching handle of the door lock installation switching slider is pressed by hand, which makes the door lock installation switching slider return to the initial state, that is, the elastic part is compressed, the state switching handle is locked by the elastic hook of the upper cover, allowing the door lock to be disassembled by diagonal pull, and waiting for the next installation. From the above analysis, it can be seen that the present invention provides a more reliable, more beautiful, and easier-to-install and disassemble household appliance door lock that realizes the closing, locking and unlocking of the household appliance. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the door lock and door hook of this utility model when they are separated.

[0017] Figure 2 This is a three-dimensional structural diagram of the door lock of this utility model;

[0018] Figure 3 This is a three-dimensional structural diagram of the top cover of the door lock of this utility model;

[0019] Figure 4 This is a three-dimensional structural diagram of the door lock of this utility model with the top cover removed;

[0020] Figure 5 This is a top-view three-dimensional structural diagram of the bottom shell of the door lock of this utility model;

[0021] Figure 6 This is a bottom-view three-dimensional structural diagram of the door lock of this utility model with the bottom shell removed;

[0022] Figure 7 This is a three-dimensional structural diagram of the hook wheel of the door lock of this utility model;

[0023] Figure 8 This is a top-view three-dimensional structural diagram of the door lock of this utility model without the top cover and electrical control box;

[0024] Figure 9 This is a top-view perspective view of the door lock of this utility model with the cover of the electrical control box removed.

[0025] Figure 10 This is a top-view three-dimensional structural diagram of the bottom of the electrical control box of the door lock of this utility model;

[0026] Figure 11 This is a three-dimensional structural diagram of the locking rod of the electrical control box of the door lock of this utility model;

[0027] Figure 12 This is a three-dimensional structural diagram of the rotating sleeve of the electrical control box of the door lock of this utility model;

[0028] Figure 13 This is an exploded structural diagram of the rotating sleeve and locking rod of the electrical control box of the door lock of this utility model;

[0029] Figure 14 This is a three-dimensional structural diagram of the household appliance according to this utility model;

[0030] Figure 15 This is a schematic diagram of the structure of the pressing part of this utility model when it is engaged with the door lock mounting slot;

[0031] Figure 16 This is a schematic diagram of the structure of the sliding rod, L-shaped stop block and door lock mounting slot of this utility model;

[0032] Figure 17This is a three-dimensional structural diagram of the door lock of this utility model when the bottom shell is removed and separated from the door hook;

[0033] Figure 18 This is a three-dimensional structural diagram of the door sensing slider and hook wheel of the door lock of this utility model.

[0034] Figure 19 This is a three-dimensional structural diagram of the door lock of this utility model when the bottom shell is removed and it is engaged with the door hook;

[0035] Figure 20 This is a three-dimensional structural diagram of the door sensing slider of the door lock of this utility model when it is disengaged from the hook wheel;

[0036] Explanation of reference numerals in the attached drawings: bottom shell (1), top cover (2), electrical control box (3), hook wheel (4), hook wheel elastic element (5), door sensing slider (6), locking slider (7), locking / unlocking rotating slider (8), installation switching slider (9); door hook (10), main body of household appliance (11), door seal (12).

[0037] Door lock opening (101), first locking step (102), second locking step (103), lower baffle (104), L-shaped stop (105); elastic hook (201), limit stop (202), pressing part (203), upper baffle (204); movable opening (301), locking rod (302), electromagnetic coil (303), plunger (304), moving block (305), cylinder (306), rotating sleeve (307), connecting plate (308), elliptical hole (309), flange (3010), spring piece (3011), inclined protrusion (3012), guide pin (3013), guide groove (3014). 14), First locked position (3015), Second locked position (3016), Unlocked position (3017), Return spring (3018); Connecting end (401), First wheel hook (402), Second wheel hook (403), Locking groove (404), Door hook groove (405), First limiting groove (406); Second limiting groove (601), Door sensing elastic element (602); Locking slider elastic element (701), Drive rod (702), Locking hole (703); Elastic part (901), State switching handle (902), Slide rod (903); Door hook opening (1001), Door lock mounting lock opening (1101). Detailed Implementation

[0038] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model, but this does not constitute a limitation on the scope of protection of the present utility model.

[0039] In this utility model, for clearer description, the following explanation is provided: The observer faces the attached... Figure 1 When observing, the observer's left side is designated as left, the observer's right side as right, the area in front of the observer as front, the area behind the observer as back, the area above the observer as top, and the area below the observer as bottom. It should be noted that the terms "front end," "rear end," "left side," "right side," "middle," "above," and "below" used in this document indicate the orientation or positional relationship based on the accompanying drawings. These are merely for the purpose of clearly describing the present invention and do not indicate or imply that the structure or component referred to must have a specific orientation or be constructed in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," "third," and "fourth" are used only for the purpose of clarity or simplification of description and should not be construed as indicating or implying relative importance or quantity.

[0040] See Figures 1 to 20This embodiment provides a door lock, including a bottom shell 1, a top cover 2 and an electrical control box 3 on the top of the bottom shell 1, and a protruding door lock opening 101 at the bottom of the bottom shell 1. A rotatable hook wheel 4 is provided between the top cover 2 and the door lock opening 101. The two sides of the door lock opening 101 are respectively provided with an upward-facing first locking step 102 and a second locking step 103. A mounting / switching slider 9 is provided above the first locking step 102. The mounting / switching slider 9 is rotatably connected to the side wall of the bottom shell 1. The mounting / switching slider 9 is provided with an elastic part 901, a state switching handle 902, and a sliding rod 903. Under the drive of the elastic part 901, the mounting / switching slider 9 has a tendency to rotate in the forward direction. The slider 9 tends to rotate in the opposite direction under the drive of the state switching handle 902; the side wall of the upper cover 2 is provided with an elastic hook 201, the movable end of the elastic hook 201 moves downward close to the first locking step 102, and the middle part of the elastic hook 201 is provided with a limiting block 202, which cooperates with the slide rod 903 to limit the rotation of the installation switching slider 9 in the forward direction; when the elastic hook 201 is subjected to external force and elastically deforms, the slide rod 903 and the limiting block 202 are misaligned, and the installation switching slider 9 rotates in the forward direction under the drive of the elastic part 901, and the slide rod 903 moves downward past the limiting block 202, so that the slide rod 903 moves downward close to the first locking step 102. Function: 1. The upper cover and the electrical control box are provided on the top of the bottom shell, and the bottom of the bottom shell is provided with a protruding door lock opening. A rotatable hook wheel is provided between the upper cover and the door lock opening; thus, the door hook can be inserted into the door lock opening and locked with the hook wheel.2. The door lock has two upward-facing locking steps on its two sides. A sliding block for installation is located above the first locking step and is rotatably connected to the side wall of the bottom shell. The sliding block has an elastic part, a state switching handle, and a sliding rod. Driven by the elastic part, the sliding block tends to rotate forward; driven by the state switching handle, it tends to rotate backward. The side wall of the top cover has an elastic hook, with its movable end pointing downwards towards the first locking step. A limiting block is provided in the middle of the sliding rod, which is in a limiting cooperation with the sliding rod. The limiting block can prevent the installation switching slider from rotating forward. When the elastic hook is subjected to external force and deforms elastically, the sliding rod and the limiting block are misaligned. The installation switching slider rotates forward under the drive of the elastic part, and the sliding rod passes the limiting block downward so that the sliding rod moves downward closer to the first locking step. Thus, in case (1), that is, when the door lock is not installed, the installation switching slider is blocked by the elastic hook of the upper cover (that is, the limiting cooperation between the block and the sliding rod), so that the door lock installation switching slider is in the open state, waiting for the switch to be installed. Installation; In case (2), i.e., when installing the door lock; the door lock is inserted obliquely into the door lock installation slot reserved in the main body of the household appliance. When the door lock is inserted obliquely into the door lock installation slot until the second locking step is completely blocked by one side edge of the door lock installation slot, the door lock is pushed to the other side. When the door lock is continued to be inserted obliquely, the other side edge of the door lock installation slot will push the elastic hook on the door lock cover, so that the door lock installation switching slider is no longer blocked by the elastic hook of the cover (i.e., the slider and the stop are misaligned). The slider moves downward closer to the first locking step, and finally The sliding rod of the installation switching slider enters between the side wall of the first locking step and the other edge of the door lock mounting opening, achieving almost zero gap, so that the door lock is firmly positioned on the household appliance; while in case (3), that is, when the door lock is disassembled; when the household appliance needs to be disassembled and repaired, the state switching handle of the door lock installation switching slider is pressed by hand, which makes the door lock installation switching slider return to the initial state, that is, the elastic part is compressed, the state switching handle is locked by the elastic hook of the upper cover, allowing the door lock to be disassembled by diagonal pull, and waiting for the next installation. From the above analysis, it can be seen that the present invention provides a more reliable, more beautiful, and easier-to-install and disassemble household appliance door lock that realizes the closing, locking and unlocking of the household appliance.

[0041] Specifically, the middle part of the installation switching slider 9 is rotatably connected to the side wall of the bottom shell 1. The slide rod 903 is located on the side of the installation switching slider 9 near the first locking step 102. The elastic part 901 and the state switching handle 902 are located on the side of the installation switching slider 9 away from the first locking step 102. The elastic hook 201 is located between the slide rod 903 and the side wall of the bottom shell 1. The limiting block 202 is located on the outer side of the middle part of the elastic hook 201. The movable end of the elastic hook 201 is provided with an outwardly protruding pressing part 203. When the pressing part 203 is subjected to external force, the elastic hook 201 will elastically deform inward. Function: With this configuration, when the pressing part 203 is pressed by the other edge of the door lock mounting slot 1101, the elastic hook 201 deforms inward, the slide bar and the stop block are misaligned, the installation switching slider 9 rotates forward and enters between the other edge of the door lock mounting slot 1101 and the side wall of the first locking step 102; when disassembly is required, pressing the state switching handle 902 will compress the elastic part 901, the installation switching slider 9 will rotate in the opposite direction, and the slide bar can re-form a limiting engagement with the limiting stop block, which facilitates oblique disassembly.

[0042] Specifically, the slide bar 903 is an L-shaped bar with the L-shaped opening facing downwards. The side wall of the first locking step 102 is provided with an L-shaped block 105 with the L-shaped opening facing upwards. The L-shaped bar and the L-shaped block 105 can form a limiting fit. The upper side of the limiting block 202 is a plane, and the lower side of the limiting block 202 is a slope. The elastic part 901 is located below the state switching handle 902. The side wall of the bottom shell 1 is provided with a lower baffle 104, and the side wall of the upper cover 2 is also provided with an upper baffle 204. The elastic part 901 and the state switching handle 902 are assembled between the lower baffle 104 and the upper baffle 204. The elastic part 901 and the lower baffle 104 can form an elastic fit. Function: When the door lock is inserted diagonally into the lock slot until it is completely blocked by the side of the lock mounting slot 1101 of the household appliance door lock, pushing the door lock to the other side will cause the sliding rod 903 of the door lock installation switch slider, the reserved L-shaped stop 105 of the door lock bottom shell, the door lock mounting slot 1101, and the door lock lock 101 to achieve almost zero gap, so that the door lock is firmly positioned on the household appliance; when the household appliance needs to disassemble and repair the door lock, the state switching handle of the door lock installation switch slider is pressed by hand, which puts the door lock installation switch slider back to the initial state, that is, the elastic part is compressed (the elastic part 901 cooperates with the lower baffle 104), the state switching part is locked by the elastic hook of the upper cover, and the L-shaped stop 105 of the bottom shell is opened, so that the door lock can be pulled diagonally to disassemble and wait for the next installation; the plane and the inclined surface of the limit stop 202 facilitate the locking and upward reset of the installation switch slider.

[0043] Specifically, the two ends of the hook wheel 4 are rotatably connected to the two side walls of the upper cover 2, respectively. The outer circumference of the hook wheel 4 is provided with a connecting end 401, a first hook 402, and a second hook 403 distributed sequentially along the circumferential direction. A locking groove 404 is formed between the connecting end 401 and the first hook 402. A door hook groove 405 that can accommodate the door hook 10 is formed between the first hook 402 and the second hook 403. A first limiting groove 406 is provided on the second hook 403. A hook wheel elastic element 5 is connected between the connecting end 401 and the rear side wall of the upper cover 2. A locking slider 7 and a door sensing slider 6 are arranged sequentially forward between the electrical control box 3 and the bottom shell 1. The door sensing slider 6 can be limited to the first limiting groove 406 to prevent the hook wheel 4 from rotating. The limiting cooperation between the door sensing slider 6 and the first limiting groove 406 can be released by pushing the door hook 10. The locking slider 7 can be locked to the locking groove 404. Function: When a child accidentally pokes the hook wheel of a household appliance with a stick or rod-shaped toy after the appliance is opened, the hook wheel is always kept in place by the door sensor slider 6 and springs back to the initial open position. This greatly avoids the hook wheel flipping caused by the lack of a limit stop in other door locks on the market, which leads to malfunctions of the door lock and household appliances. It also avoids the need for other door locks to be cumbersomely disassembled from the household appliance before they can be restored.

[0044] Specifically, one end of the door sensing slider 6 is provided with a second limiting groove 601, and the first limiting groove 406 and the second limiting groove 601 can cooperate to limit the rotation of the hook wheel 4. The other end of the door sensing slider 6 is provided with a door sensing elastic element 602. One end of the locking slider 7 is provided with a locking and unlocking rotating slider 8, which is rotatably mounted on the bottom shell 1. The other end of the locking slider 7 is provided with a locking slider elastic element 701, and the locking slider 7 can drive the locking and unlocking rotating slider 8 to rotate into the locking groove 404. Function: The door sensing slider 6 also provides a signal detection for whether the door hook has entered, i.e., whether the appliance door is closed, to indicate whether the appliance door (such as a washing machine) is closed and in the washing state. When the appliance is locked in the washing state, if the door is forcibly opened and the door hook disengages from the hook wheel (then the hook wheel is re-limited by the door sensing slider 6), the left and right movement of the door sensing slider 6 can provide a set of signals to the appliance, informing it that the door has been opened and that it should not or should stop working. The locking slider 7 also moves left and right, which can also realize the mechanical locking or unlocking of the appliance door. It is easy to operate, simple in structure, and has a certain degree of versatility. The first limiting groove 406 and the second limiting groove 601 cooperate to limit the door, so that the door sensing slider is stuck in the hook wheel. This prevents the hook wheel from turning when the appliance door hook has not entered, even if it is accidentally operated or pushed by a child with a stick or strip-shaped object. The door is then in the closed state. After the door is closed, the door sensing slider is pushed open by the door hook, and the hook wheel can turn.

[0045] Specifically, the hook wheel elastic element 5 is a torsion spring, and the torsion spring and the locking / unlocking rotary slider 8 can alternately rest in the locking groove 404. The first wheel hook 402 can cooperate with the door hook opening 1001 of the door hook 10. The locking slider elastic element 701 and the door sensing elastic element 602 are springs. The first limiting groove 406 and the second limiting groove 601 are L-shaped grooves. The locking / unlocking rotary slider 8 is an L-shaped block. One end of the locking / unlocking rotary slider 8 is rotatably mounted on the bottom shell 1. One end of the locking slider 7 is also provided with a drive rod 702. When the drive rod 702 pushes the locking / unlocking rotary slider 8 to rotate into the locking groove 404, the drive rod 702 rests in the L-shaped opening of the locking / unlocking rotary slider 8. Function: With only simple deformation of some parts (such as the door sensing elastic element 602 being a spring to provide elastic force), it is possible to prevent the hook wheel from being accidentally triggered and overturned; the torsion spring can cooperate with the door hook opening 1001 of the door hook 10, and after the rotation angle of the torsion spring exceeds a certain angle, it will change from a reaction force to a positive force, thereby achieving better locking.

[0046] Specifically, the bottom wall of the electrical control box 3 has a movable opening 301, and the interior of the electrical control box 3 has a vertically retractable locking rod 302. The locking rod 302 passes downward through the movable opening 301, and the middle of the locking slider 7 has a locking hole 703. The locking rod 302 can be locked downward with the locking hole 703 to achieve the locking of the locking and unlocking rotating slider 8 onto the hook wheel 4. Function: When the door of the household appliance is closed (i.e., the locking and unlocking rotating slider 8 rotates to the locking groove 404), the electrical control box 3 receives the electrical pulse from the household appliance and performs a locking action to lock the door of the household appliance (i.e., the locking rod 302 is locked downward with the locking hole 703), and sends a feedback signal to the household appliance. After the household appliance completes its work, the electrical control box 3 releases the lock, allowing the door of the household appliance to be opened.

[0047] Specifically, the electrical control box 3 also includes an electromagnetic coil 303 and a plunger 304. The electromagnetic coil 303, in conjunction with a return spring 3018, drives the plunger 304 to move back and forth. The plunger 304 has a moving block 305, and one side of the moving block 305 has a cylinder 306. The electrical control box 3 also includes a rotating sleeve 307, which fits around the outer circumference of the movable opening 301. The rotating sleeve 307 has a connecting plate 308, and the connecting plate 308 has an elliptical... An elliptical hole 309 is formed, through which a cylinder 306 passes, allowing the moving block 305 to drive the rotating sleeve 307 to rotate. The upper end of the locking rod 302 has a flange 3010. The lower end of the rotating sleeve 307 engages with the inner wall of the electrical control box 3, and the upper end of the rotating sleeve 307 engages with the lower side of the flange 3010. A spring 3011 is located above the flange 3010. The rotating sleeve 307 can drive the locking rod 302 to move upwards, and the spring 3011 can drive the locking rod 302 to move downwards. Function: The electromagnetic coil 303 drives the plunger 304 to retract, and the return spring 3018 drives the plunger 304 to extend. Through the cooperation of the moving block 305, the rotating sleeve 307, and the spring 3011, the locking rod 302 moves up and down.

[0048] Specifically, the lower end of the rotating sleeve 307 engages with the inner wall of the electrical control box 3 through several inclined protrusions 3012, and the upper end of the rotating sleeve 307 engages with the lower side of the flange 3010 through several inclined protrusions 3012. One side of the inclined protrusion 3012 is a slope, and the other side of the inclined protrusion 3012 is a vertical surface. A guide pin 3013 is provided on the other side of the moving block 305, and a guide groove 3014 is provided on the inner wall of the electrical control box 3. A first locking position 3015, a second locking position 3016, and an unlocking position 3017 are sequentially provided on the path of the guide groove 3014. One end of the guide pin 3013 is rotatably connected to the other side of the moving block 305, and the other end of the guide pin 3013 is movably disposed in the guide groove 3014 so that the guide pin 3013 controls the telescopic movement distance of the plunger 304. Function: The tilting protrusion 3012 can convert rotation into linear motion; guided by the guide groove 3014 and the guide pin 3013, when the guide pin 3013 moves to the first locking position 3015, the electrical control box 3 receives the appliance locking signal for the first time and locks; when the guide pin 3013 moves to the second locking position 3016, it receives the appliance locking signal for the second time and remains locked; that is, a double pulse is achieved in one cycle, with two locking and one unlocking cycles. Optionally, according to customer needs, it can also be set to a structure of "one pulse for locking, one pulse for unlocking".

[0049] This utility model also provides a household appliance, including a main body 11, a door 12 on the main body 11, one end of the main body 11 being rotatably connected to one end of the door 12; it also includes a door lock according to any of the above technical solutions, the other end of the main body 11 having a door lock mounting slot 1101, the other end of the door 12 having a door hook 10, the door lock slot 101 of the door lock cooperating with the installation switching slider 9 within the door lock mounting slot 1101 of the main body 11, the door hook 10 having a door hook opening 1001, and the door hook 10 forming a locking engagement with the hook wheel 4. Function: This provides a reliable, aesthetically pleasing, and easily installable / removable door lock for household appliances, facilitating the opening, closing, locking, and unlocking of the door, especially for washing machines.

[0050] It is worth noting that, because home appliances are sometimes installed with a wall on the left and sometimes on the right, the door may need to be mirrored to make it easier for the end customer to open the door to the side closest to the wall.

[0051] In summary, compared with existing applications of this type on the market, this embodiment of the present invention:

[0052] 1. Easy to install, disassemble, and aesthetically pleasing;

[0053] 2. Prevent accidental overturning of the hook wheel;

[0054] 3. Optionally, home appliances can be locked twice to prevent accidental operation by children.

[0055] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications are also considered to be within the protection scope of this utility model.

Claims

1. A door lock, comprising a base shell (1), characterized in that: The bottom shell (1) is provided with a top cover (2) and an electrical control box (3) on its upper part. The bottom of the bottom shell (1) is provided with a protruding door lock opening (101). A rotatable hook wheel (4) is provided between the top cover (2) and the door lock opening (101). The two sides of the door lock opening (101) are respectively provided with an upward-facing first locking step (102) and a second locking step (103). An installation switching slider (9) is provided above the first locking step (102). The installation switching slider (9) is rotatably connected to the side wall of the bottom shell (1). The installation switching slider (9) is provided with an elastic part (901), a state switching handle (902), and a slide bar (903). The installation switching slider (9) has a tendency to rotate in the positive direction under the drive of the elastic part (901). The installation switching slider (9) is located at the state switching handle (903). Driven by the elastic part (902), it tends to rotate in the opposite direction; the side wall of the upper cover (2) is provided with an elastic hook (201), the movable end of the elastic hook (201) moves downward close to the first locking step (102), the middle part of the elastic hook (201) is provided with a limiting block (202), the limiting block (202) cooperates with the slide rod (903) in a limiting manner, the limiting block (202) can prevent the installation switching slider (9) from rotating forward; when the elastic hook (201) is subjected to external force and elastically deformed, the slide rod (903) and the limiting block (202) are misaligned, the installation switching slider (9) rotates forward under the drive of the elastic part (901), the slide rod (903) moves downward past the limiting block (202) so that the slide rod (903) moves downward close to the first locking step (102).

2. The door lock according to claim 1, characterized in that: The middle part of the installation switching slider (9) is rotatably connected to the side wall of the bottom shell (1). The slide rod (903) is located on the side of the installation switching slider (9) close to the first locking step (102). The elastic part (901) and the state switching handle (902) are located on the side of the installation switching slider (9) away from the first locking step (102). The elastic hook (201) is located between the slide rod (903) and the side wall of the bottom shell (1). The limiting block (202) is located on the outer side of the middle part of the elastic hook (201). The movable end of the elastic hook (201) is provided with an outwardly protruding pressing part (203). When the pressing part (203) is subjected to external force, the elastic hook (201) will elastically deform inward.

3. A door lock according to claim 2, characterized in that: The slide bar (903) is an L-shaped bar with an L-shaped opening facing downwards. The side wall of the first locking step (102) is provided with an L-shaped block (105) with an L-shaped opening facing upwards. The L-shaped bar and the L-shaped block (105) can form a limiting fit. The upper side of the limiting block (202) is a plane, and the lower side of the limiting block (202) is an inclined plane. The elastic part (901) is located below the state switching handle (902). The side wall of the bottom shell (1) is provided with a lower baffle (104), and the side wall of the upper cover (2) is also provided with an upper baffle (204). The elastic part (901) and the state switching handle (902) are assembled between the lower baffle (104) and the upper baffle (204). The elastic part (901) and the lower baffle (104) can form an elastic fit.

4. A door lock according to any one of claims 1 to 3, characterized in that: The two ends of the hook wheel (4) are rotatably connected to the two side walls of the upper cover (2), respectively. The outer circumference of the hook wheel (4) is provided with a connecting end (401), a first hook (402), and a second hook (403) distributed sequentially along the circumferential direction. A locking groove (404) is formed between the connecting end (401) and the first hook (402). A door hook groove (405) that can accommodate the door hook (10) is formed between the first hook (402) and the second hook (403). A first limiting groove (406) is provided on the second hook (403). A hook wheel elastic element (5) is connected between the end (401) and the rear side wall of the upper cover (2). A locking slider (7) and a door sensing slider (6) are arranged sequentially forward between the electrical control box (3) and the bottom shell (1). The door sensing slider (6) can be limited to the first limiting groove (406) to prevent the hook wheel (4) from rotating. The limiting cooperation between the door sensing slider (6) and the first limiting groove (406) can be released by pushing the door hook (10). The locking slider (7) can be locked to the locking groove (404).

5. A door lock according to claim 4, characterized in that: One end of the door sensing slider (6) is provided with a second limiting groove (601), and the first limiting groove (406) and the second limiting groove (601) can cooperate to limit the rotation of the hook wheel (4). The other end of the door sensing slider (6) is provided with a door sensing elastic element (602). One end of the locking slider (7) is provided with a locking and unlocking rotating slider (8), which is rotatably mounted on the bottom shell (1). The other end of the locking slider (7) is provided with a locking slider elastic element (701), and the locking slider (7) can drive the locking and unlocking rotating slider (8) to rotate into the locking groove (404).

6. A door lock according to claim 5, characterized in that: The hook wheel elastic element (5) is a torsion spring, and the torsion spring and the locking / unlocking rotary slider (8) can alternately rest in the locking groove (404). The first wheel hook (402) can cooperate with the door hook opening (1001) of the door hook (10). The locking slider elastic element (701) and the door sensing elastic element (602) are springs. The first limiting groove (406) and the second limiting groove (601) are L-shaped grooves. The locking / unlocking rotary slider (8) is an L-shaped block. One end of the locking / unlocking rotary slider (8) is rotatably mounted on the bottom shell (1). One end of the locking slider (7) is also provided with a drive rod (702). When the drive rod (702) pushes the locking / unlocking rotary slider (8) to rotate into the locking groove (404), the drive rod (702) rests in the L-shaped opening of the locking / unlocking rotary slider (8).

7. A door lock according to claim 5, characterized in that: The bottom wall of the electrical control box (3) is provided with a movable opening (301). The interior of the electrical control box (3) is provided with a locking rod (302) that can extend and retract vertically. The locking rod (302) passes downward through the movable opening (301). The middle part of the locking slider (7) is provided with a locking hole (703). The locking rod (302) can lock and cooperate with the locking hole (703) downward to realize the locking of the locking and unlocking rotating slider (8) to the hook wheel (4).

8. A door lock according to claim 7, characterized in that: The electrical control box (3) is also equipped with an electromagnetic coil (303) and a plunger (304). The electromagnetic coil (303) can work with a return spring (3018) to drive the plunger (304) to move back and forth. The plunger (304) is equipped with a moving block (305), and a cylinder (306) is provided on one side of the moving block (305). The electrical control box (3) is also equipped with a rotating sleeve (307), which is fitted around the outer circumference of the movable opening (301). The rotating sleeve (307) is equipped with a connecting plate (308), and the connecting plate (308) is equipped with an elliptical hole (309). The cylinder (306) passes through the elliptical hole (309) so that the moving block (305) can drive the rotating sleeve (307) to rotate; the upper end of the locking rod (302) is provided with a flange (3010), the lower end of the rotating sleeve (307) is engaged with the inner wall of the electrical control box (3), the upper end of the rotating sleeve (307) is engaged with the lower side of the flange (3010), a spring piece (3011) is provided above the flange (3010), the rotating sleeve (307) can drive the locking rod (302) to move upward, and the spring piece (3011) can drive the locking rod (302) to move downward.

9. A door lock according to claim 8, characterized in that: The lower end of the rotating sleeve (307) engages with the inner wall of the electrical control box (3) via several inclined protrusions (3012), and the upper end of the rotating sleeve (307) engages with the lower side of the flange (3010) via several inclined protrusions (3012). One side of the inclined protrusion (3012) is a slope, and the other side of the inclined protrusion (3012) is a vertical surface. A guide pin (3013) is provided on the other side of the moving block (305). The inner wall of the electrical control box (3) The wall is provided with a guide groove (3014), and the path of the guide groove (3014) is provided with a first locking position (3015), a second locking position (3016), and an unlocking position (3017) in sequence. One end of the guide pin (3013) is rotatably connected to the other side of the moving block (305), and the other end of the guide pin (3013) is movably disposed in the guide groove (3014) so ​​that the guide pin (3013) controls the telescopic movement distance of the plunger (304).

10. A household appliance, comprising a main body (11) of the household appliance, wherein a sealing door (12) is provided on the main body (11), and one end of the main body (11) is rotatably connected to one end of the sealing door (12); characterized in that: It also includes the door lock as described in any one of claims 1 to 9, wherein the other end of the main body (11) of the household appliance is provided with a door lock mounting slot (1101), the other end of the door seal (12) is provided with a door hook (10), the door lock slot (101) of the door lock and the mounting switch slider (9) are fitted together in the door lock mounting slot (1101) of the main body (11) of the household appliance, the door hook (10) is provided with a door hook opening (1001), and the door hook (10) and the hook wheel (4) can form a locking engagement.

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