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 device is reasonable in structural design, easy to mount and dismount and attractive in appearance; 2, the hook wheel is prevented from turning over due to misoperation;

Description

Technical Field

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

[0002] Some washing machine door locks on the market currently do not provide a device to prevent the door lock hook wheel from accidentally flipping over, which leads to children, driven by curiosity, accidentally using bars or sticks to toy to hit the hook wheel, causing the hook wheel to accidentally flip over. In this case, the door lock needs to be removed from the washing machine by professionals through tedious disassembly steps before it can be restored.

[0003] Furthermore, there are some washing machine door locks on the market that require a door lock installation hole to be drilled on the washing machine, or require auxiliary tools for disassembly, or require multiple parts or complex mechanisms to achieve installation and disassembly. Summary of the invention

[0004] The object of the present invention is to provide a door lock and a household appliance, so that the door lock on the household appliance (such as a washing machine) can be easily installed and removed.

[0005] In order to achieve the above-mentioned purpose, the technical solution of the present invention provides a door lock, including a bottom shell, an upper cover and an electrical control box are arranged above the bottom shell, a protruding door lock lock port is arranged at the bottom of the bottom shell, and a rotatable hook wheel is arranged between the upper cover and the door lock lock port; the two side edges of the door lock lock port are respectively provided with a first positioning step and a second positioning step with an opening facing upward, a mounting switching slider is arranged above the first positioning step, the mounting switching slider is rotatably connected to the side wall of the bottom shell, an elastic part, a state switching handle and a sliding rod are arranged on the mounting switching slider, and the mounting switching slider has a tendency to rotate forward under the drive of the elastic part , the installation switching slider has a tendency to rotate in the opposite direction under the drive of the state switching handle; the side wall of the upper cover is provided with an elastic hook, the movable end of the elastic hook moves downward close to the first positioning step, and the middle part of the elastic hook is provided with a limit stopper, the limit stopper cooperates with the slide rod to limit the position, and the limit stopper can prevent the installation switching slider from rotating forward; when the elastic hook is elastically deformed by external force, the slide rod and the limit stopper are misaligned, and the installation switching slider rotates forward under the drive of the elastic part, and the slide rod passes over the limit stopper downward to make the slide rod move downward close to the first positioning step.

[0006] Furthermore, the middle part of the installation switching slider is rotatably connected to the side wall of the bottom shell, the sliding 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 sliding rod and the side wall of the bottom shell, and the limit stop block is located on the outer side surface of the middle part of the elastic hook, and the movable end of the elastic hook is provided with a pressing part protruding outward, and 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 an L-shaped opening facing downward, and the side wall of the first locking step is provided with an L-shaped block with an L-shaped opening facing upward, the L-shaped rod and the L-shaped block can form a limiting fit, the upper side surface of the limiting block is a plane, and the lower side surface of the limiting block is an inclined surface; 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, and the outer circumference of the hook wheel is provided with a connecting end, a first wheel hook and a second wheel hook distributed in sequence along the circumferential direction, a locking groove is formed between the connecting end and the first wheel hook, a door hook groove that can accommodate a door hook is formed between the first wheel hook and the second wheel hook, and a first limiting groove is provided on the second wheel hook; a hook wheel elastic element is connected between the connecting end and the rear side wall of the upper cover, and a locking slider and a door sensing slider distributed forward in sequence are provided between the electrical control box and the bottom shell, the door sensing slider and the first limiting groove can be limitedly matched to prevent the hook wheel from rotating, and the limiting cooperation between the door sensing slider and the first limiting groove can be released by pushing the door hook, and the locking slider can be locked and matched with the locking groove.

[0009] Furthermore, a second limiting groove is provided at one end of the door sensing slider, and the first limiting groove and the second limiting groove can be limitedly matched to prevent the hook wheel from rotating, and a door sensing elastic element is provided at the other end of the door sensing slider; a locking and unlocking rotating slider is provided at one end of the locking slider, and the locking and unlocking rotating slider is rotatably arranged on the bottom shell, and a locking slider elastic element is provided at the other end of the locking slider, 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 and unlocking rotary slider can be alternately placed in the locking groove, the first wheel hook can cooperate with the door hook mouth of the door hook, 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, and the locking and unlocking rotary slider is an L-shaped block, one end of the locking and unlocking rotary slider is rotatably arranged on the bottom shell, and a driving rod is also provided at one end of the locking slider, and when the driving rod pushes the locking and unlocking rotary slider to rotate to the locking groove, the driving rod is placed in the L-shaped opening of the locking and unlocking rotary slider.

[0011] Furthermore, a movable opening is provided on the bottom wall of the electrical control box, and a locking rod which can be extended and retracted up and down is provided inside the electrical control box. The locking rod passes downward through the movable opening, and a locking hole is provided in the middle of the locking slider. The locking rod can be locked downward with the locking hole to achieve the locking of the hook wheel by the locking and unlocking rotating slider.

[0012] Furthermore, an electromagnetic coil and a plunger are also provided inside the electrical control box, and the electromagnetic coil can cooperate with a reset spring to drive the plunger to move forward and backward, and a moving block is provided on the plunger, and a cylinder is provided on one side of the moving block; a rotating sleeve is also provided inside the electrical control box, and the rotating sleeve is sleeved on the outer circumference of the movable opening, and a connecting plate is provided on the rotating sleeve, and an elliptical hole is provided on the connecting plate, and the cylinder passes through the elliptical hole so that the moving block can drive the rotating sleeve to rotate; a flange is provided at the upper end of the locking rod, and the lower end of the rotating sleeve cooperates with the inner wall of the electrical control box, and the upper end of the rotating sleeve cooperates with the lower side of the flange, and a spring sheet is provided above the flange, and the rotating sleeve can drive the locking rod to move upward, and the spring sheet can drive the locking rod to move downward.

[0013] Furthermore, the lower end of the rotating sleeve cooperates with the inner wall of the electrical control box through a plurality of inclined protrusions, and the upper end of the rotating sleeve cooperates with the lower side of the flange through a plurality of inclined protrusions, one side of the inclined protrusion is an inclined surface, and the other side of the inclined protrusion 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, and a first locking position, a second locking position, and an unlocking position are sequentially provided on 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 arranged in the guide groove so that the guide pin controls the telescopic movement distance of the plunger.

[0014] The present invention also provides a household appliance, comprising a main body of the household appliance, a sealing door is provided on the main body of the household appliance, one end of the main body of the household appliance is rotatably connected to one end of the sealing door; and also comprising the door lock described in any of the above technical solutions, the other end of the main body of the household appliance is provided with a door lock installation lock port, the other end of the sealing door is provided with a door hook, the door lock lock port of the door lock cooperates with the installation switching slider to be assembled in the door lock installation lock port of the main body of the household appliance, the door hook is provided with a door hook port, and the door hook and the hook wheel can form a locking fit.

[0015] In summary, the use of the technical solution of the present invention has the following beneficial effects: the structural design of the present invention is reasonable, 1. An upper cover and an electrical control box are provided above the bottom shell, a protruding door lock port is provided at the bottom of the bottom shell, and a rotatable hook wheel is provided between the upper cover and the door lock port; so that the door hook can extend into the door lock port and lock with the hook wheel. 2. A first positioning step and a second positioning step with openings facing upward are provided on the two side edges of the door lock port, and an installation switching slider is provided above the first positioning step. The installation switching slider is rotatably connected to the side wall of the bottom shell, and an elastic part, a state switching handle, and a sliding rod are provided on the installation switching slider. The installation switching slider has a tendency to rotate forward when driven by the elastic part, and has a tendency to rotate reversely when driven by the state switching handle; an elastic hook is provided on the side wall of the upper cover, and the movable end of the elastic hook is downward close to the first positioning step, and the elastic hook A limit stopper is provided in the middle part, and the limit stopper cooperates with the slide bar to prevent the installation switch slider from rotating in the positive direction; when the elastic hook is elastically deformed by external force, the slide bar and the limit stopper are misaligned, and the installation switch slider rotates in the positive direction under the drive of the elastic part, and the slide bar passes over the limit stopper downward, so that the slide bar moves downward close to the first locking step; thus, in case (1), that is, the door lock state when not installed: the installation switch slider is blocked by the elastic hook of the upper cover (that is, the stopper cooperates with the slide bar to limit), so that the door lock installation switch slider is in the open state, waiting for Installation; In case (2), that is, when the door lock is installed; the door lock slot is inserted obliquely from the door lock installation slot reserved in the main body of the household appliance. When the door lock is obliquely inserted into the door lock installation slot to the second card position step and is completely supported 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 obliquely inserted, 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 stuck by the elastic hook on the cover (that is, the slide bar and the block are misaligned), and the slide bar moves downward close to the first card position step, and finally , the slide bar of the installation switch slider enters between the side wall of the first positioning step and the other side edge of the door lock installation lock, achieving almost zero gap, so that the door lock is firmly positioned on the household appliance; and in case (3), that is, when the door lock is disassembled; 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 makes the door lock installation switch slider in the initial state, that is, the elastic part is compressed, and the state switching handle is stuck by the elastic hook of the upper cover, so that the door lock can be disassembled by diagonal pulling and wait for the next installation. From the above analysis, it can be seen that the present invention provides a more reliable household appliance door lock that makes the household appliance more beautiful, easy to install and disassemble, and can realize closing, locking, and unlocking the household appliance. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the door lock of the present invention when it is separated from the door hook;

[0017] Figure 2 It is a three-dimensional structural schematic diagram of the door lock of the present invention;

[0018] Figure 3 It is a schematic diagram of the three-dimensional structure of the upper cover of the door lock of the present invention;

[0019] Figure 4 It is a schematic diagram of the three-dimensional structure of the door lock of the present invention without the upper cover;

[0020] Figure 5 1 is a top view of a three-dimensional structure of a bottom shell of a door lock of the present invention;

[0021] Figure 6 It is a schematic diagram of the three-dimensional structure of the door lock of the present invention when the bottom shell is removed;

[0022] Figure 7 It is a three-dimensional structural schematic diagram of the hook wheel of the door lock of the present invention;

[0023] Figure 8 It is a top view of the three-dimensional structure of the door lock of the present invention without the upper cover and the electrical control box;

[0024] Fig. 9 It is a top view of the three-dimensional structure of the door lock of the present invention without the cover of the electrical control box;

[0025] Fig.10 It is a top view of the three-dimensional structure of the box bottom of the electrical control box of the door lock of the present invention;

[0026] Fig.11 It is a three-dimensional structural schematic diagram of the locking rod of the electrical control box of the door lock of the present invention;

[0027] Fig.12 It is a three-dimensional structural schematic diagram of a rotating sleeve of an electrical control box of a door lock of the present invention;

[0028] Fig.13 It is a schematic diagram of the exploded structure of the rotating sleeve and the locking rod of the electrical control box of the door lock of the present invention;

[0029] Fig.14 It is a three-dimensional structural schematic diagram of the household appliance of the present invention;

[0030] Fig.15 It is a schematic diagram of the structure when the pressing part of the present invention cooperates with the door lock installation lock port;

[0031] Fig.16 It is a schematic diagram of the structure of the slide bar, the L-shaped stopper and the door lock installation lock port of the present invention when they cooperate;

[0032] Fig.17 It is a schematic diagram of the three-dimensional structure of the door lock of the present invention when the bottom shell is removed and the door hook is separated;

[0033] Fig.18 It is a schematic diagram of the three-dimensional structure of the door lock of the present invention when the door sensing slider and the hook wheel cooperate;

[0034] Fig.19 It is a schematic diagram of the three-dimensional structure of the door lock of the present invention when the bottom shell is removed and the door lock is matched with the door hook;

[0035] Fig. 20 It is a schematic diagram of the three-dimensional structure of the door lock of the present invention when the door sensing slider is separated from the hook wheel;

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

[0037] A door lock lock (101), a first locking step (102), a second locking step (103), a lower baffle (104), an L-shaped block (105); an elastic hook (201), a limit block (202), a pressing portion (203), an upper baffle (204); a movable opening (301), a locking rod (302), an electromagnetic coil (303), a plunger (304), a moving block (305), a cylinder (306), a rotating sleeve (307), a connecting plate (308), an elliptical hole (309), a flange (3010), a spring sheet (3011), an inclined protrusion (3012), a guide pin (3013), a guide groove (3014), and a locking rod (3015). 14), a first locking position (3015), a second locking position (3016), an unlocking position (3017), a reset spring (3018); a connecting end (401), a first wheel hook (402), a second wheel hook (403), a locking slot (404), a door hook slot (405), a first limiting slot (406); a second limiting slot (601), a door sensing elastic element (602); a locking slider elastic element (701), a driving rod (702), a locking hole (703); an elastic portion (901), a state switching handle (902), a sliding rod (903); a door hook opening (1001), and a door lock installation lock opening (1101). DETAILED DESCRIPTION

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

[0039] In the present invention, for a clearer description, the following explanation is made: the observer faces the attached Figure 1For observation, the left side of the observer is set as left, the right side of the observer is set as right, the front of the observer is set as front, the back of the observer is set as back, the top of the observer is set as top, and the bottom of the observer is set as bottom. It should be pointed out that the terms "front end", "rear end", "left side", "right side", "middle", "top", "bottom" and the like in the text indicate the orientation or position relationship based on the orientation or position relationship set in the drawings, which is only for the convenience of clearly describing the present invention, and does not indicate or imply that the structure or component referred to must have a specific orientation or be constructed in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", "third", and "fourth" are only used for the purpose of clarity or simplification of description, and cannot be understood as indicating or implying relative importance or quantity.

[0040] See also Figures 1 to 20The present embodiment provides a door lock, including a bottom shell 1, an upper cover 2 and an electrical control box 3 are arranged above the bottom shell 1, a protruding door lock lock port 101 is arranged at the bottom of the bottom shell 1, and a rotatable hook wheel 4 is arranged between the upper cover 2 and the door lock lock port 101; the edges of both sides of the door lock lock port 101 are respectively provided with a first positioning step 102 and a second positioning step 103 with an opening facing upward, and an installation switching slider 9 is arranged above the first positioning step 102, and the installation switching slider 9 is rotatably connected to the side wall of the bottom shell 1, and an elastic part 901, a state switching handle 902, and a slide rod 903 are arranged on the installation switching slider 9, and the installation switching slider 9 has a tendency to rotate forward under the drive of the elastic part 901 ... The slider 9 has a tendency to rotate in the reverse 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 is downwardly close to the first positioning step 102, and a limit stopper 202 is provided in the middle of the elastic hook 201, and the limit stopper 202 is limitedly matched with the slide bar 903, and the limit stopper 202 can prevent the installation switching slider 9 from rotating forward; when the elastic hook 201 is elastically deformed by external force, the slide bar 903 and the limit stopper 202 are misaligned, and the installation switching slider 9 rotates forward under the drive of the elastic part 901, and the slide bar 903 passes over the limit stopper 202 downward, so that the slide bar 903 moves downwardly close to the first positioning step 102. Function: 1. The upper cover and the electrical control box are provided above the bottom shell, and a protruding door lock lock port is provided at the bottom of the bottom shell, and a rotatable hook wheel is provided between the upper cover and the door lock lock port; so that the door hook can extend into the door lock lock port and lock with the hook wheel.2. A first positioning step and a second positioning step with openings facing upward are respectively provided on the edges of both sides of the door lock. A mounting switch slider is provided above the first positioning step. The mounting switch slider is rotatably connected to the side wall of the bottom shell. An elastic part, a state switching handle and a slide bar are provided on the mounting switch slider. The mounting switch slider has a tendency to rotate forward under the drive of the elastic part, and has a tendency to rotate reversely under the drive of the state switching handle. An elastic hook is provided on the side wall of the upper cover. The movable end of the elastic hook is downwardly close to the first positioning step. The elastic hook A limit stopper is provided in the middle part, and the limit stopper cooperates with the slide bar to prevent the installation switch slider from rotating in the positive direction; when the elastic hook is elastically deformed by external force, the slide bar and the limit stopper are misaligned, and the installation switch slider rotates in the positive direction under the drive of the elastic part, and the slide bar passes over the limit stopper downward, so that the slide bar moves downward close to the first locking step; thus, in case (1), that is, the door lock state when not installed: the installation switch slider is blocked by the elastic hook of the upper cover (that is, the stopper cooperates with the slide bar to limit), so that the door lock installation switch slider is in the open state, waiting for Installation; In case (2), that is, when the door lock is installed; the door lock slot is inserted obliquely from the door lock installation slot reserved in the main body of the household appliance. When the door lock is obliquely inserted into the door lock installation slot to the second card position step and is completely supported 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 obliquely inserted, 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 stuck by the elastic hook on the cover (that is, the slide bar and the block are misaligned), and the slide bar moves downward close to the first card position step, and finally , the slide bar of the installation switch slider enters between the side wall of the first positioning step and the other side edge of the door lock installation lock, achieving almost zero gap, so that the door lock is firmly positioned on the household appliance; and in case (3), that is, when the door lock is disassembled; 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 makes the door lock installation switch slider in the initial state, that is, the elastic part is compressed, and the state switching handle is stuck by the elastic hook of the upper cover, so that the door lock can be disassembled by diagonal pulling and wait for the next installation. From the above analysis, it can be seen that the present invention provides a more reliable household appliance door lock that makes the household appliance more beautiful, easy to install and disassemble, and can realize closing, locking, and unlocking 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 close to the first locking step 102, and 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, and the limit block 202 is located on the outer side surface of the middle part of the elastic hook 201. The movable end of the elastic hook 201 is provided with a pressing part 203 protruding outward. When the pressing part 203 is subjected to external force, the elastic hook 201 will elastically deform inward. Function: With this arrangement, when the pressing portion 203 is squeezed by the other side edge of the door lock installation lock hole 1101, the elastic hook 201 is deformed inward, the slide rod and the block are misaligned, and the installation switching slide block 9 rotates forward to enter between the other side edge of the door lock installation lock hole 1101 and the side wall of the first positioning step 102; when disassembly is required, the state switching handle 902 is pressed, the elastic portion 901 will be compressed, and the installation switching slide block 9 rotates in the opposite direction, and the slide rod can re-form a limiting fit with the limiting block to facilitate oblique disassembly.

[0042] Specifically, the sliding rod 903 is an L-shaped rod with an L-shaped opening facing downward, and the side wall of the first locking step 102 is provided with an L-shaped block 105 with an L-shaped opening facing upward. The L-shaped rod and the L-shaped block 105 can form a limiting fit, the upper side surface of the limiting block 202 is a plane, and the lower side surface of the limiting block 202 is an inclined surface; 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, and the elastic part 901 and the lower baffle 104 can form an elastic fit. Function: When the door lock is inserted obliquely into the lock port until the side that is obliquely inserted by the door lock installation lock port 1101 of the household appliance door lock is completely resisted, the door lock is pushed to the other side. At this time, the slide bar 903 of the door lock installation switching slider and the reserved L-shaped block 105 of the door lock bottom shell, as well as the door lock installation lock port 1101 and the door lock lock port 101 achieve almost zero clearance, 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 part of the door lock installation switching slider is pressed by hand, which makes the door lock installation switching slider in the initial state, that is, the elastic part is compressed (the elastic part 901 cooperates with the lower baffle 104), and the state switching part is stuck by the elastic hook of the upper cover, so that the L-shaped block 105 of the bottom shell is opened, and the door lock can be disassembled by oblique pulling and waiting for the next installation; the plane and the inclined surface of the limit stopper 202 are convenient for the installation of the switching slider to fit and reset upward.

[0043] Specifically, the two ends of the hook wheel 4 are rotatably connected to the two side walls of the upper cover 2 respectively, and the outer circumference of the hook wheel 4 is provided with a connecting end 401, a first wheel hook 402, and a second wheel hook 403 distributed in sequence along the circumferential direction, a locking groove 404 is formed between the connecting end 401 and the first wheel hook 402, a door hook groove 405 that can accommodate the door hook 10 is formed between the first wheel hook 402 and the second wheel hook 403, and a first limiting groove 406 is provided on the second wheel 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, and a locking slider 7 and a door sensing slider 6 distributed forward in sequence are provided between the electrical control box 3 and the bottom shell 1, and the door sensing slider 6 can be limitedly matched with the first limiting groove 406 to prevent the hook wheel 4 from rotating, and the limiting cooperation between the door sensing slider 6 and the first limiting groove 406 can be released by pushing the door hook 10, and the locking slider 7 can be locked and matched with the locking groove 404. Function: After the sealing door of the household appliance is opened, when the household appliance is accidentally hit by a child with a stick or a rod-shaped toy, the hook wheel is always limited by the door sensing slider 6 and rebounds to the initial position of the door opening, thereby greatly avoiding the situation that other door locks on the market have no limit and cause the hook wheel to flip, causing the door lock and the household appliance to malfunction. It avoids the need for other door locks to be tediously disassembled from the household appliance before they can be restored.

[0044] Specifically, a second limiting groove 601 is provided at one end of the door sensing slider 6, and the first limiting groove 406 and the second limiting groove 601 can be limited and cooperated to prevent the hook wheel 4 from rotating, and a door sensing elastic element 602 is provided at the other end of the door sensing slider 6; a locking and unlocking rotating slider 8 is provided at one end of the locking slider 7, and the locking and unlocking rotating slider 8 is rotatably set on the bottom shell 1, and a locking slider elastic element 701 is provided at the other end of the locking slider 7, 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 of whether the door hook is in, that is, whether the door of the household appliance is closed, so as to detect whether the door of the household appliance (such as a washing machine) has been closed and whether the washing state is in progress. When the household appliance is locked in washing, if the door is forcibly opened and the door hook is separated from the hook wheel (then the hook wheel is again limited by the door sensing slider 6), then through the left and right movement of the door sensing slider 6, a set of signals can be provided to the household appliance to inform that the door is opened and cannot or stops working; and the locking slider 7 also moves left and right, and can also mechanically lock or unlock the door of the household appliance, which is easy to operate, simple in structure, and has certain versatility; and the first limiting groove 406 and the second limiting groove 601 are limited and matched, so that the door sensing slider is stuck with the hook wheel, so that when the hook of the household appliance door is not in, the hook wheel cannot be turned over by mistaken operation or by a child pushing the hook wheel with a stick or a bar-shaped object, and enters the door closing state. After the door is closed, the door sensing slider is pushed open by the door hook, and the hook wheel is turned over.

[0045] Specifically, the hook wheel elastic element 5 is a torsion spring, and the torsion spring and the locking and unlocking rotary slider 8 can be alternately placed in the locking groove 404. The first wheel hook 402 can cooperate with the door hook mouth 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, and the locking and unlocking rotary slider 8 is an L-shaped block. One end of the locking and unlocking rotary slider 8 is rotatably set on the bottom shell 1, and a driving rod 702 is also provided at one end of the locking slider 7. When the driving rod 702 pushes the locking and unlocking rotary slider 8 to rotate to the locking groove 404, the driving rod 702 is placed in the L-shaped opening of the locking and unlocking rotary slider 8. Function: Only a simple deformation of some parts is required (such as the door sensing elastic element 602 is a spring that provides elastic force) to prevent the hook wheel from being accidentally triggered and flipped; the torsion spring can cooperate with the door hook mouth 1001 of the door hook 10. When the rotation angle of the torsion spring exceeds a certain angle, the reaction force will be changed into a positive force, thereby achieving better locking.

[0046] Specifically, the bottom wall of the electrical control box 3 is provided with an active opening 301, and the interior of the electrical control box 3 is provided with a locking rod 302 that can be extended upward and downward. The locking rod 302 passes downward through the active opening 301, and the middle part of the locking slider 7 is provided with a locking hole 703. The locking rod 302 can be locked and matched with the locking hole 703 downward to achieve the locking of the hook wheel 4 by the locking and unlocking rotary slider 8. Function: When the door of the household appliance is closed (i.e., the locking and unlocking rotary slider 8 rotates to the locking groove 404), the electrical control box 3 receives the electric pulse sent by the household appliance and gives a locking action to lock the door of the household appliance (i.e., the locking rod 302 is locked and matched with the locking hole 703 downward), and feedbacks a signal to the household appliance. After the household appliance completes the work, the locking state is released by the electrical control box 3, so that the door of the household appliance can be opened.

[0047] Specifically, the interior of the electrical control box 3 is also provided with an electromagnetic coil 303 and a plunger 304. The electromagnetic coil 303 can cooperate with the reset spring 3018 to drive the plunger 304 to move forward and backward. The plunger 304 is provided with a moving block 305, and a cylinder 306 is provided on one side of the moving block 305; the interior of the electrical control box 3 is also provided with a rotating sleeve 307, the rotating sleeve 307 is sleeved on the outer circumference of the movable opening 301, and the rotating sleeve 307 is provided with a connecting plate 308, and the connecting plate 308 is provided with an elliptical The cylinder 306 passes through the elliptical hole 309, so that the motion 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 cooperates with the inner wall of the electrical control box 3, the upper end of the rotating sleeve 307 cooperates with the lower side of the flange 3010, and the upper part of the flange 3010 is provided with a spring 3011, the rotating sleeve 307 can drive the locking rod 302 to move upward, and the spring 3011 can drive the locking rod 302 to move downward. Function: The electromagnetic coil 303 drives the plunger 304 to retract, and the reset spring 3018 drives the plunger 304 to extend, and drives the locking rod 302 to move up and down through the cooperation of the motion block 305, the rotating sleeve 307, and the spring 3011.

[0048] Specifically, the lower end of the rotating sleeve 307 cooperates with the inner wall of the electrical control box 3 through a plurality of inclined protrusions 3012, and the upper end of the rotating sleeve 307 cooperates with the lower side of the flange 3010 through a plurality of inclined protrusions 3012, one side of the inclined protrusion 3012 is an inclined surface, 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, and 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 arranged in the guide groove 3014, so that the guide pin 3013 controls the telescopic movement distance of the plunger 304. Function: The inclined protrusion 3012 can realize the conversion of rotation into linear motion; under the guidance of 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 household appliance locking signal for the first time and locks; when the guide pin 3013 moves to the second locking position 3016, it receives the household appliance locking signal for the second time and remains locked; that is, double pulses are achieved in one cycle, two times are locking and one time is unlocking. Optionally, according to customer needs, it can also be set to a structure of "one pulse to lock, one pulse to unlock".

[0049] The present invention also provides a household appliance, including a household appliance main body 11, a sealing door 12 is provided on the household appliance main body 11, and one end of the household appliance main body 11 is rotatably connected with one end of the sealing door 12; and also includes a door lock of any of the above technical solutions, the other end of the household appliance main body 11 is provided with a door lock installation lock hole 1101, the other end of the sealing door 12 is provided with a door hook 10, the door lock lock hole 101 of the door lock cooperates with the installation switching slider 9 to be assembled in the door lock installation lock hole 1101 of the household appliance main body 11, the door hook 10 is provided with a door hook hole 1001, and the door hook 10 and the hook wheel 4 can form a locking fit. Function: Provides a reliable and beautiful door lock that is easy to install and disassemble and is installed on a household appliance, which can facilitate the opening, closing, locking and unlocking of the door of the household appliance, especially the washing machine.

[0050] It is worth mentioning that when household appliances are installed by end customers, some are installed with a wall on the left side, and some are installed with a wall on the right side. In order to facilitate the end customers to open the door to the side close to the wall, the general door lock may also require a mirrored version.

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

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

[0053] 2. Prevent the hook wheel from flipping due to misoperation;

[0054] 3. Optionally, the household appliances can be locked twice to prevent children from operating them by mistake.

[0055] The above is a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several improvements and modifications without departing from the principle of the present invention. These improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. A door lock, comprising a bottom shell (1), characterized in that: An upper cover (2) and an electrical control box (3) are provided above the bottom shell (1); a protruding door lock opening (101) is provided at the bottom of the bottom shell (1); a rotatable hook wheel (4) is provided between the upper cover (2) and the door lock opening (101); two side edges of the door lock opening (101) are respectively provided with a first locking step (102) and a second locking step (103) with an opening facing upward; a mounting switch slider (9) is provided above the first locking step (102); the mounting switch slider (9) is rotatably connected to the side wall of the bottom shell (1); an elastic portion (901), a state switching handle (902), and a slide bar (903) are provided on the mounting switch slider (9); the mounting switch slider (9) has a tendency to rotate in a positive direction under the drive of the elastic portion (901); the mounting switch slider (9) rotates in a positive direction when the state switching handle (902) is engaged. The upper cover (2) has a tendency to rotate in the opposite direction under the drive of the elastic part (902); an elastic hook (201) is provided on the side wall of the upper cover (2), and the movable end of the elastic hook (201) is downwardly close to the first positioning step (102); a limit stopper (202) is provided in the middle of the elastic hook (201), and the limit stopper (202) is limitedly matched with the slide bar (903), and the limit stopper (202) can prevent the installation switching slider (9) from rotating in the positive direction; when the elastic hook (201) is elastically deformed by an external force, the slide bar (903) and the limit stopper (202) are misaligned, and the installation switching slider (9) rotates in the positive direction under the drive of the elastic part (901), and the slide bar (903) passes over the limit stopper (202) downward, so that the slide bar (903) is downwardly close to the first positioning step (102).

2. A 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 sliding 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 sliding rod (903) and the side wall of the bottom shell (1); the limit stopper (202) is located on the outer side surface of the middle part of the elastic hook (201); the movable end of the elastic hook (201) is provided with a pressing part (203) protruding outward, and when the pressing part (203) is subjected to external force, the elastic hook (201) will be elastically deformed inward.

3. A door lock according to claim 2, characterized in that: The sliding rod (903) is an L-shaped rod with an L-shaped opening facing downwards, and the side wall of the first positioning step (102) is provided with an L-shaped stopper (105) with an L-shaped opening facing upwards, and the L-shaped rod and the L-shaped stopper (105) can form a limiting fit, and the upper side surface of the limiting stopper (202) is a plane, and the lower side surface of the limiting stopper (202) is an inclined surface; 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), and the elastic part (901) and the state switching handle (902) are assembled between the lower baffle (104) and the upper baffle (204), and 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 wheel hook (402), and a second wheel hook (403) which are sequentially distributed along the circumferential direction; a locking groove (404) is formed between the connecting end (401) and the first wheel hook (402); a door hook groove (405) capable of accommodating a door hook (10) is formed between the first wheel hook (402) and the second wheel hook (403); and a first limiting groove (406) is provided on the second wheel 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 in sequence forwardly between the electrical control box (3) and the bottom shell (1); the door sensing slider (6) and the first limiting groove (406) can be limitedly matched to prevent the hook wheel (4) from rotating; the limit matching between the door sensing slider (6) and the first limiting groove (406) can be released by pushing the door hook (10); and the locking slider (7) can be locked with the locking groove (404).

5. A door lock according to claim 4, characterized in that: A second limiting groove (601) is provided at one end of the door sensing slider (6), and the first limiting groove (406) and the second limiting groove (601) can be limitedly matched to prevent the hook wheel (4) from rotating. A door sensing elastic element (602) is provided at the other end of the door sensing slider (6); a locking and unlocking rotating slider (8) is provided at one end of the locking slider (7), and the locking and unlocking rotating slider (8) is rotatably arranged on the bottom shell (1); a locking slider elastic element (701) is provided at the other end of the locking slider (7), 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 and unlocking rotary slider (8) can be alternately placed 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 and unlocking rotary slider (8) is an L-shaped block; one end of the locking and unlocking rotary slider (8) is rotatably arranged on the bottom shell (1); one end of the locking slider (7) is also provided with a driving rod (702); when the driving rod (702) pushes the locking and unlocking rotary slider (8) to rotate to the locking groove (404), the driving rod (702) is placed in the L-shaped opening of the locking and 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), and the interior of the electrical control box (3) is provided with a locking rod (302) that can be extended upward and downward, and the locking rod (302) passes downward through the movable opening (301). A locking hole (703) is provided in the middle of the locking slider (7), and the locking rod (302) can be locked downward with the locking hole (703) to achieve the locking of the hook wheel (4) by the locking and unlocking rotating slider (8).

8. A door lock according to claim 7, characterized in that: The electrical control box (3) is further provided with an electromagnetic coil (303) and a plunger (304) inside. The electromagnetic coil (303) can cooperate with a reset spring (3018) to drive the plunger (304) to move forward and backward. The plunger (304) is provided 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 further provided with a rotating sleeve (307) inside. The rotating sleeve (307) is sleeved on the outer circumference of the movable opening (301). The rotating sleeve (307) is provided with a connecting plate (308), and the connecting plate (308) is provided 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) cooperates with the inner wall of the electrical control box (3), the upper end of the rotating sleeve (307) cooperates with the lower side of the flange (3010), and a spring sheet (3011) is provided above the flange (3010); the rotating sleeve (307) can drive the locking rod (302) to move upward, and the spring sheet (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) cooperates with the inner wall of the electrical control box (3) via a plurality of inclined protrusions (3012); the upper end of the rotating sleeve (307) cooperates with the lower side of the flange (3010) via a plurality of inclined protrusions (3012); one side of the inclined protrusion (3012) is an inclined surface, 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) is provided with a guide pin (3013); A guide groove (3014) is provided on the wall, and 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 needle (3013) is rotatably connected to the other side of the moving block (305), and the other end of the guide needle (3013) is movably arranged in the guide groove (3014), so that the guide needle (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) of the household appliance, and one end of the main body (11) of the household appliance is rotatably connected to one end of the sealing door (12); characterized in that: It also includes the door lock according to 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 installation lock hole (1101), and the other end of the sealing door (12) is provided with a door hook (10), and the door lock lock hole (101) of the door lock cooperates with the installation switching slider (9) to be assembled in the door lock installation lock hole (1101) of the main body (11) of the household appliance, and the door hook (10) is provided with a door hook hole (1001), and the door hook (10) and the hook wheel (4) can form a locking fit.

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