A washing machine door lock structure with multi-stage opening

Abstract

The present invention discloses a multi-stage opening door lock structure for a washing machine, comprising a shell, a lock hole being provided in the shell, a door hook being provided in the lock hole, one end of the door hook being connected to the door body of the washing machine, and the other end of the door hook extending into the shell after passing through the lock hole; an elastic telescopic mechanism being provided between the end of the door hook located in the shell and the inner wall of the shell; the end of the door hook located in the shell being provided with a first locking groove and a second locking groove at intervals along the length direction, the first locking groove being located on the inner side of the second locking groove; a driving mechanism being provided in the shell, and a locking mechanism being provided in the shell; the present invention aims to provide a multi-stage opening door lock structure for a washing machine, which can lock the door twice, automatically lock when washing clothes to ensure safety in use, and automatically unlock once after washing clothes, so that the washing machine drum can exchange air with the outside world during the drying process of clothes, and also has a ventilation effect on the washing tub to prevent clothes from generating odor.

Description

Technical Field

[0001] The invention relates to the technical field of washing machine door locks, and in particular to a washing machine door lock structure with multi-stage opening. Background Art

[0002] The existing washing machine door locks on the market can only lock the door once. The washing machine door is closed for washing. When washing is completed, the washing machine door cannot be automatically unlocked and opened. At this time, a closed space is formed in the washing tub of the washing machine. If the washing machine door is not opened in time or the clothes are not hung to dry, a large number of bacteria will breed in the washing machine, and the clothes will produce odor or even stink. Summary of the invention

[0003] The purpose of the present invention is to propose a multi-stage opening washing machine door lock structure, which can lock the door twice, automatically lock when washing clothes to ensure safety in use, and automatically unlock once after washing clothes. During the clothes drying process, the washing machine drum can exchange air with the outside world, and at the same time, it also has a ventilation effect on the washing tub, which can prevent clothes from generating odor.

[0004] To achieve this purpose, the present invention adopts the following technical solutions: a multi-stage opening washing machine door lock structure, comprising a shell, wherein the shell is provided with a lock hole, a door hook is provided in the lock hole, one end of the door hook is connected to the washing machine door body, and the other end of the door hook extends into the shell after passing through the lock hole; an elastic telescopic mechanism is provided between one end of the door hook located in the shell and the inner wall of the shell, and the elastic telescopic mechanism is telescopic along the length direction of the door hook; one end of the door hook located in the shell is provided with a first locking groove and a second locking groove at intervals along the length direction, and the first locking groove is located on the inner side of the second locking groove; a driving mechanism for locking or releasing the door hook is provided in the shell, and a locking mechanism for locking or releasing the driving mechanism is provided in the shell; in a fully closed state, the locking mechanism locks the driving mechanism, and the driving mechanism is locked to the second locking groove; in a first-stage opening state, the locking mechanism locks the driving mechanism, and the driving mechanism is locked to the first locking groove; in a second-stage opening state, the locking mechanism releases the driving mechanism.

[0005] Preferably, a partition is provided in the shell, the partition is located at the lower side of the locking hole, and the partition is provided with a yield hole; a mounting seat is provided below the partition, a accommodating cavity is provided in the mounting seat, and the mounting seat is provided with a mounting through hole which is conductively connected to the accommodating cavity; the driving mechanism comprises a driving solenoid valve, a locking seat and a reset spring, the driving solenoid valve is arranged in the shell, the locking seat is arranged in the accommodating cavity, the output end of the driving solenoid valve passes through the mounting through hole and is connected to the locking seat, the reset spring is arranged between the locking seat and the mounting seat, and the reset spring is retracted and extended along the axial direction of the driving solenoid valve; in the locked state, the upper end of the locking seat passes through the yield hole and is connected to the first locking groove or the second locking groove.

[0006] Preferably, the locking seat includes a limit baffle, a locking portion and a connecting hook portion, and two connecting hook portions are provided, the upper end surface of the limit baffle is connected to the locking portion, and the lower end surface of the limit baffle is connected to the two connecting hook portions; the upper end surface of the locking portion is an arc structure, the connecting hook portion is an L-shaped structure and the lower ends of the two connecting hook portions cooperate to form a bayonet, and the output end of the driving solenoid valve is clamped in the bayonet; one end of the reset spring is sleeved on the periphery of the two connecting hook portions, and the other end is connected to the mounting seat; in the locked state, the upper end of the locking portion passes through the give way hole and is connected to the first locking groove or the second locking groove.

[0007] Preferably, the locking mechanism includes a fixed seat and a locking solenoid valve, the fixed seat is arranged on the side wall of the mounting seat, the locking solenoid valve is arranged in the fixed seat, and a locking through hole is provided on the side wall of the mounting seat opposite to the output end of the locking solenoid valve, and the output end of the locking solenoid valve passes through the locking through hole and extends to the bottom of the limit baffle.

[0008] Preferably, a protrusion is provided on the outer edge of the limit baffle, and a groove matching with the protrusion is provided on the inner wall of the mounting seat along the vertical direction, and the protrusion slides in the corresponding groove.

[0009] Preferably, the elastic telescopic mechanism includes a top opening plate, a connecting sleeve and a telescopic spring, one end surface of the top opening plate abuts against one end of the door hook located in the shell, the other end surface of the top opening plate is connected to the connecting sleeve, one end of the telescopic spring is sleeved on the periphery of the connecting sleeve, and the other end of the telescopic spring is connected to the shell; a guide and limiting mechanism is provided between the top opening plate and the shell.

[0010] Preferably, the guide limiting mechanism includes a guide block and a plurality of guide strips, and at least two guide blocks are provided, at least two of the guide blocks are circumferentially arranged on the outer edge of the top opening plate, and the plurality of guide strips cooperate with each other to form guide grooves, and the guide blocks are slidably connected in the corresponding guide grooves.

[0011] Preferably, the guide limiting mechanism further comprises a stopper, and the stopper is arranged at one end of the guide groove close to the lock hole, and the length of the guide groove is 15-40 mm.

[0012] Preferably, the distance between the first locking groove and the second locking groove is 15-30 mm.

[0013] Preferably, an arc-shaped guide surface is provided at one end of the door hook located in the shell, and an outer end of the lock hole is provided with a guide slope matching the arc-shaped guide surface.

[0014] The present invention adopts the above structure, and the driving mechanism, locking mechanism, door hook, first locking groove and second locking groove cooperate to achieve the effect of opening the door of the washing machine in multiple stages. When washing is finished, a gap is first opened to allow the washing tub to ventilate or the washing machine to enter the drying function to prevent the clothes from generating odor when the clothes are forgotten to be hung out to dry. Then the second-level opening state is entered, and the washing machine door is in an unlocked state. The user can open the washing machine door to hang clothes. The automation degree is high, and the washing machine door can be ensured to be in a locked state during the washing or drying process, thereby improving the safety of the washing machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings further illustrate the present invention, but the contents in the accompanying drawings do not constitute any limitation to the present invention.

[0016] Figure 1 It is a schematic diagram of the structure of the present invention;

[0017] Figure 2 It is a schematic diagram of the internal structure of the present invention in a completely closed state;

[0018] Figure 3 It is a schematic diagram of the internal structure of the present invention in a first-level opening state;

[0019] Figure 4 It is a structural schematic diagram of the housing of the present invention;

[0020] Figure 5 It is a partial structural schematic diagram of the present invention.

[0021] Among them: shell 1, lock hole 1a, partition 1b, give way hole 1c, door hook 2, elastic telescopic mechanism 3, top opening plate 3a, connecting sleeve 3b, telescopic spring 3c, first locking groove 4, second locking groove 5, driving mechanism 6, driving solenoid valve 6a, locking seat 6b, reset spring 6c, limit baffle 6d, locking part 6e, connecting hook part 6f, protrusion 6g, locking mechanism 7, fixing seat 7a, locking solenoid valve 7b, mounting seat 8, guide limit mechanism 9, guide block 9a, guide strip 9b, block 9c. DETAILED DESCRIPTION

[0022] The technical solution of the present invention is further described below with reference to the accompanying drawings and through specific implementation methods.

[0023] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention 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, and therefore cannot be understood as a limitation on the present invention.

[0024] See also Figures 1 to 5 As shown, a multi-stage opening washing machine door lock structure of this embodiment includes a shell 1, the shell 1 is provided with a lock hole 1a, a door hook 2 is provided in the lock hole 1a, one end of the door hook 2 is connected to the washing machine door body, and the other end of the door hook 2 passes through the lock hole 1a and extends into the shell 1.

[0025] An elastic telescopic mechanism 3 is provided between one end of the door hook 2 located in the housing 1 and the inner wall of the housing 1 , and the elastic telescopic mechanism 3 is telescopic along the length direction of the door hook 2 .

[0026] One end of the door hook 2 located in the housing 1 is provided with a first locking groove 4 and a second locking groove 5 at intervals along the length direction, and the first locking groove 4 is located on the inner side of the second locking groove 5 .

[0027] A driving mechanism 6 for locking or releasing the door hook 2 is disposed in the housing 1 , and a locking mechanism 7 for locking or releasing the driving mechanism 6 is disposed in the housing 1 .

[0028] In the fully closed state, the locking mechanism 7 locks the driving mechanism 6 , and the driving mechanism 6 is locked in the second locking groove 5 .

[0029] In the first-stage opening state, the locking mechanism 7 locks the driving mechanism 6 , and the driving mechanism 6 is locked in the first locking groove 4 .

[0030] In the secondary opening state, the locking mechanism 7 releases the driving mechanism 6 .

[0031] With this structure, when the washing machine door is closed, the washing machine door drives the door hook 2 to insert into the lock hole 1a, the end of the door hook 2 pushes the elastic telescopic mechanism 3, and the upper end of the driving mechanism 6 enters the first locking groove 4, emitting the first "click" prompt sound. As the washing machine door continues to be closed, the upper end of the driving mechanism 6 moves out of the first locking groove 4 and enters the second locking groove 5, emitting the second "click" prompt sound. At this time, the washing machine door is completely closed, the upper end of the driving mechanism 6 is locked in the second locking groove 5, and the locking mechanism 7 locks the driving mechanism 6 to prevent the washing machine door from being opened, and the washing machine performs washing.

[0032] In the first level opening state, the locking mechanism 7 first releases the driving mechanism 6, and the driving mechanism 6 drives its upper end to move out of the second locking groove 5. The door hook 2 is pushed outward for a short distance driven by the elastic telescopic mechanism 3, and the short distance is determined by the distance between the first locking groove 4 and the second locking groove 5; then, the driving mechanism 6 drives its upper end to enter the first locking groove 4, and the locking mechanism 7 locks the driving mechanism 6 to prevent the washing machine door from being opened further. In this state, the washing machine door opens a gap to provide ventilation for the washing tub of the washing machine. At the same time, the washing machine can also be set with drying and other functions to further dry the clothes in the washing tub.

[0033] In the second-stage opening state, the locking mechanism 7 releases the driving mechanism 6. At this time, the upper end of the driving mechanism 6 is located in the first locking groove 4. It only needs to apply a force outward to the washing machine door to separate the door hook 2 from the first locking groove 4, thereby achieving the purpose of fully opening the washing machine door.

[0034] The present invention achieves the effect of multi-stage opening of the washing machine door by adopting the cooperation of the driving mechanism 6, the locking mechanism 7, the door hook 2, the first locking groove 4 and the second locking groove 5. First, a gap is opened to allow the washing tub to ventilate or the washing machine to enter the drying function to prevent the clothes from generating odor when the clothes are forgotten to be hung out to dry. Then, the second-level opening state is entered, and the washing machine door is in an unlocked state. The user can open the washing machine door to hang clothes. The degree of automation is high, and the washing machine door can be ensured to be in a locked state during the washing or drying process, thereby improving the safety of the washing machine.

[0035] Preferably, a partition 1b is provided in the shell 1, and the partition 1b is located at the lower side of the lock hole 1a, and the partition 1b is provided with a make way hole 1c; a mounting seat 8 is provided below the partition 1b, and a accommodating cavity is provided in the mounting seat 8, and the mounting seat 8 is provided with a mounting through hole that is conductively connected to the accommodating cavity.

[0036] The driving mechanism 6 includes a driving solenoid valve 6a, a locking seat 6b and a reset spring 6c. The driving solenoid valve 6a is arranged in the housing 1, and the locking seat 6b is arranged in the accommodating cavity. The output end of the driving solenoid valve 6a passes through the mounting through hole and is connected to the locking seat 6b. The reset spring 6c is arranged between the locking seat 6b and the mounting seat 8. The reset spring 6c expands and contracts along the axial direction of the driving solenoid valve 6a.

[0037] In the locked state, the upper end of the locking seat 6b passes through the clearance hole 1c and is connected to the first locking groove 4 or the second locking groove 5.

[0038] With this structure, when the driving solenoid valve 6a is in the power-off state, the locking seat 6b is pushed upward under the action of the reset spring 6c, and the upper end of the locking seat 6b passes through the clearance hole 1c and presses against the first locking groove 4 or the second locking groove 5; when the driving solenoid valve 6a is in the power-on state, the locking seat 6b moves downward under the drive of the driving solenoid valve 6a, and the upper end of the locking seat 6b moves out of the second locking groove 5, and the door hook 2 is pushed outward under the action of the elastic telescopic mechanism 3. After the door hook 2 is pushed into place, the driving solenoid valve 6a is powered off, and the locking seat 6b enters the locked state again.

[0039] Preferably, the locking seat 6b includes a limit baffle 6d, a locking portion 6e and a connecting hook portion 6f, and two connecting hook portions 6f are provided. The upper end surface of the limit baffle 6d is connected to the locking portion 6e, and the lower end surface of the limit baffle 6d is connected to the two connecting hook portions 6f.

[0040] The upper end surface of the locking portion 6e is an arc-shaped structure, the connecting hook portion 6f is an L-shaped structure, and the lower ends of the two connecting hook portions 6f cooperate to form a bayonet, and the output end of the driving electromagnetic valve 6a is clamped in the bayonet.

[0041] One end of the return spring 6 c is sleeved on the periphery of the two connecting hooks 6 f , and the other end is connected to the mounting seat 8 .

[0042] In the locked state, the upper end of the locking portion 6e passes through the clearance hole 1c and is connected to the first locking groove 4 or the second locking groove 5.

[0043] With this structure, the limit baffle 6d cooperates with the partition 1b to play a limiting role, so that the locking part 6e can pass through the clearance hole 1c and press against the first locking groove 4 or the second locking groove 5. The two connecting hooks 6f cooperate to form a bayonet structure, which is convenient for connecting the output end of the driving solenoid valve 6a and can also play a good fixing role.

[0044] Preferably, the locking mechanism 7 includes a fixed seat 7a and a locking solenoid valve 7b, the fixed seat 7a is arranged on the side wall of the mounting seat 8, the locking solenoid valve 7b is arranged in the fixed seat 7a, and a locking through hole is provided on the side wall of the mounting seat 8 opposite to the output end of the locking solenoid valve 7b, and the output end of the locking solenoid valve 7b passes through the locking through hole and extends to the bottom of the limit baffle 6d.

[0045] With this structure, when the locking solenoid valve 7b is powered off, the output end of the locking solenoid valve 7b extends to the bottom of the limit baffle 6d, and presses against the limit baffle 6d, so that the locking seat 6b cannot move downward, and the locking portion 6e tops the first locking groove 4 or the second locking groove 5, thereby playing the role of locking the washing machine door. When the locking solenoid valve 7b is powered on, the output end of the locking solenoid valve 7b is retracted, releasing the limit baffle 6d, so that the locking seat 6b is in a released state, and the door hook 2 can move along the length direction.

[0046] Preferably, a protrusion 6g is provided on the outer edge of the limit baffle 6d, and a groove matching with the protrusion 6g is provided on the inner wall of the mounting seat 8 along the vertical direction, and the protrusion 6g slides in the corresponding groove.

[0047] With this structure, the protrusion 6g and the corresponding groove cooperate to play a good guiding role, preventing the locking seat 6b from deviating and affecting the alignment of the locking portion 6e and the clearance hole 1c.

[0048] Preferably, the elastic telescopic mechanism 3 includes a top opening plate 3a, a connecting sleeve 3b and a telescopic spring 3c, one end surface of the top opening plate 3a is abutted against one end of the door hook 2 located in the shell 1, the other end surface of the top opening plate 3a is connected to the connecting sleeve 3b, one end of the telescopic spring 3c is sleeved on the periphery of the connecting sleeve 3b, and the other end of the telescopic spring 3c is connected to the shell 1; a guide limiting mechanism 9 is provided between the top opening plate 3a and the shell 1.

[0049] With this structure, the top opening plate 3a and the telescopic spring 3c cooperate to push the door hook 2. When the washing machine door enters the first-stage opening state from the fully closed state, the telescopic spring 3c and the top opening plate 3a cooperate to push the door hook 2 to move a certain distance. The elastic force of the telescopic spring 3c when it returns to the initial state pushes the door hook 2 a distance equal to the distance between the first locking groove 4 and the second locking groove 5.

[0050] Preferably, the guide limiting mechanism 9 includes a guide block 9a and a plurality of guide strips 9b, and at least two guide blocks 9a are provided, at least two guide blocks 9a are circumferentially arranged on the outer edge of the top opening plate 3a, and the plurality of guide strips 9b cooperate with each other to form guide grooves, and the guide blocks 9a are slidably connected in the corresponding guide grooves.

[0051] With this structure, the guide block 9 a and the guide groove cooperate to play a good guiding role, preventing the top opening plate 3 a from deviating during the movement process, thereby affecting the movement effect of the door hook 2 .

[0052] Preferably, the guide limiting mechanism 9 further includes a stopper 9c, and the stopper 9c is arranged at one end of the guide groove close to the lock hole 1a, and the length of the guide groove is 15-40 mm.

[0053] With this structure, in the closed state, the distance between the end of the door hook 2 and the stopper 9c is equal to the distance between the first locking groove 4 and the second locking groove 5. The stopper 9c cooperates with the guide block 9a to limit the top opening plate 3a from moving too far under the action of the telescopic spring 3c.

[0054] Preferably, the distance between the first locking groove 4 and the second locking groove 5 is 15-30 mm.

[0055] With this structure, preferably, the spacing between the first locking groove 4 and the second locking groove 5 is 20 mm, that is, in the first-level opening state, the washing machine door is opened with a gap of 20 mm in width, which facilitates ventilation of the washing tub.

[0056] Preferably, one end of the door hook 2 located inside the housing 1 is provided with an arc-shaped guide surface, and the outer end of the lock hole 1a is provided with a guide slope matched with the arc-shaped guide surface.

[0057] With this structure, the arc-shaped guide surface and the guide inclined surface cooperate to play a good guiding role, thereby improving the alignment accuracy between the door hook 2 and the lock hole 1a.

[0058] During operation, the door of the washing machine is closed, and the door drives the door hook 2 to be inserted into the lock hole 1a. At this time, the locking part 6e is pushed upward under the action of the reset spring 6c. When the door hook 2 is inserted, the first locking groove 4 and the second locking groove 5 are respectively connected with the locking part 6f to produce a "click" prompt sound. At this time, the door is in a completely closed state, and the washing machine performs normal cleaning work.

[0059] When the washing machine finishes washing clothes, the locking solenoid valve 7b is energized, the output end of the locking solenoid valve 7b shrinks, and the locking seat 6b is in a released state. Then, the driving solenoid valve 6a is energized, and the output end of the driving solenoid valve 6a pulls the locking seat 6b downward, and the locking part 6e moves out of the second locking groove 5. The door hook 2 moves outward under the action of the telescopic spring 3c. When it moves into place, the driving solenoid valve 6a is de-energized, and the locking part 6e is pushed up under the action of the reset spring 6c. The locking part 6e presses against the first locking groove 4, and the locking solenoid valve 7b is de-energized. The output end of the locking solenoid valve 7b extends to the bottom of the limit baffle 6d, which plays a locking role. At this time, the door of the washing machine opens a gap for the washing tub to ventilate.

[0060] When the washing machine is finished drying, the locking solenoid valve 7b is energized, and the output end of the locking solenoid valve 7b contracts. When the user applies a force to the washing machine door, the door hook 2 can be moved out of the first locking groove 4, thereby opening the washing machine door.

[0061] The technical principle of the present invention is described above in conjunction with specific embodiments. These descriptions are only for explaining the principle of the present invention and cannot be interpreted as limiting the scope of protection of the present invention in any way. Based on the explanations herein, those skilled in the art can associate other specific implementations of the present invention without paying creative labor, and these methods will fall within the scope of protection of the present invention.

Claims

1. A multi-stage opening washing machine door lock structure, comprising a housing, characterized in that: The housing is provided with a lock hole, a door hook is provided in the lock hole, one end of the door hook is connected to the door of the washing machine, and the other end of the door hook passes through the lock hole and extends into the housing; An elastic telescopic mechanism is provided between one end of the door hook located in the shell and the inner wall of the shell, and the elastic telescopic mechanism is telescopic along the length direction of the door hook; One end of the door hook located in the housing is provided with a first locking groove and a second locking groove spaced apart along the length direction, wherein the first locking groove is located inside the second locking groove; A driving mechanism for locking or releasing the door hook is provided in the housing, and a locking mechanism for locking or releasing the driving mechanism is provided in the housing; In the fully closed state, the locking mechanism locks the driving mechanism, and the driving mechanism is locked in the second locking groove; In the first-stage opening state, the locking mechanism locks the driving mechanism, and the driving mechanism is locked in the first locking groove; In the secondary opening state, the locking mechanism releases the driving mechanism; A partition is provided in the shell, the partition is located at the lower side of the lock hole, and the partition is provided with a clearance hole; a mounting seat is provided below the partition, a receiving cavity is provided in the mounting seat, and the mounting seat is provided with a mounting through hole conductively connected to the receiving cavity; The driving mechanism comprises a driving solenoid valve, a locking seat and a reset spring, wherein the driving solenoid valve is arranged in the housing, the locking seat is arranged in the accommodating cavity, the output end of the driving solenoid valve passes through the mounting through hole and is connected to the locking seat, the reset spring is arranged between the locking seat and the mounting seat, and the reset spring is retracted along the axial direction of the driving solenoid valve; In the locked state, the upper end of the locking seat passes through the clearance hole and is connected to the first locking groove or the second locking groove; The locking seat comprises a limit baffle, a locking portion and a connecting hook portion, wherein two connecting hook portions are provided, the upper end surface of the limit baffle is connected to the locking portion, and the lower end surface of the limit baffle is connected to the two connecting hook portions; The upper end surface of the locking portion is an arc-shaped structure, the connecting hook portion is an L-shaped structure, and the lower ends of the two connecting hook portions cooperate to form a bayonet, and the output end of the driving solenoid valve is clamped in the bayonet; One end of the return spring is sleeved on the periphery of the two connecting hooks, and the other end is connected to the mounting seat; In the locked state, the upper end of the locking portion passes through the clearance hole and is connected to the first locking groove or the second locking groove; The locking mechanism includes a fixing seat and a locking solenoid valve, wherein the fixing seat is arranged on the side wall of the mounting seat, and the locking solenoid valve is arranged in the fixing seat. A locking through hole is provided on the side wall of the mounting seat opposite to the output end of the locking solenoid valve, and the output end of the locking solenoid valve passes through the locking through hole and extends to the bottom of the limit baffle.

2. A multi-stage opening washing machine door lock structure according to claim 1, characterized in that: The outer edge of the limit baffle is provided with a protrusion, and the inner wall of the mounting seat is provided with a groove matched with the protrusion along the vertical direction, and the protrusion slides in the corresponding groove.

3. A multi-stage opening washing machine door lock structure according to claim 1, characterized in that: The elastic telescopic mechanism includes a top opening plate, a connecting sleeve and a telescopic spring. One end surface of the top opening plate abuts against one end of the door hook located in the shell, and the other end surface of the top opening plate is connected to the connecting sleeve. One end of the telescopic spring is sleeved on the periphery of the connecting sleeve, and the other end of the telescopic spring is connected to the shell. A guide and limiting mechanism is provided between the top opening plate and the shell.

4. A multi-stage opening washing machine door lock structure according to claim 3, characterized in that: The guide limiting mechanism includes a guide block and a plurality of guide strips. There are at least two guide blocks, at least two of which are circumferentially arranged on the outer edge of the top opening plate. The plurality of guide strips cooperate with each other to form guide grooves, and the guide blocks are slidably connected in the corresponding guide grooves.

5. A multi-stage opening washing machine door lock structure according to claim 4, characterized in that: The guide limiting mechanism also includes a stopper, which is arranged at one end of the guide groove close to the lock hole, and the length of the guide groove is 15-40 mm.

6. A multi-stage door lock structure for a washing machine according to claim 1, characterized in that: The distance between the first locking groove and the second locking groove is 15-30 mm.

7. A multi-stage opening washing machine door lock structure according to claim 1, characterized in that: An end of the door hook located in the shell is provided with an arc-shaped guide surface, and an outer end of the lock hole is provided with a guide inclined surface matched with the arc-shaped guide surface.

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