CN108118492B - Washing machine door lock detection device and detection method - Google Patents

Washing machine door lock detection device and detection method Download PDF

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Publication number
CN108118492B
CN108118492B CN201611072854.6A CN201611072854A CN108118492B CN 108118492 B CN108118492 B CN 108118492B CN 201611072854 A CN201611072854 A CN 201611072854A CN 108118492 B CN108118492 B CN 108118492B
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China
Prior art keywords
door lock
upper cover
washing machine
hook
lock
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Active
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CN201611072854.6A
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Chinese (zh)
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CN108118492A (en
Inventor
王得军
徐雯婷
张皓钧
今井俊次
郑玉强
邢福涛
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Qingdao Jiaonan Haier Washing Machine Co Ltd
Haier Smart Home Co Ltd
Original Assignee
Qingdao Jiaonan Haier Washing Machine Co Ltd
Haier Smart Home Co Ltd
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Application filed by Qingdao Jiaonan Haier Washing Machine Co Ltd, Haier Smart Home Co Ltd filed Critical Qingdao Jiaonan Haier Washing Machine Co Ltd
Priority to CN201611072854.6A priority Critical patent/CN108118492B/en
Priority to PCT/CN2017/113507 priority patent/WO2018099386A1/en
Publication of CN108118492A publication Critical patent/CN108118492A/en
Application granted granted Critical
Publication of CN108118492B publication Critical patent/CN108118492B/en
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    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06FLAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F37/00Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/42Safety arrangements, e.g. for stopping rotation of the receptacle upon opening of the casing door
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06FLAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F39/00Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00 
    • D06F39/12Casings; Tubs
    • D06F39/14Doors or covers; Securing means therefor

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Main Body Construction Of Washing Machines And Laundry Dryers (AREA)

Abstract

The invention discloses a washing machine door lock detection device, and relates to the technical field of washing machines. The washing machine door lock detection device comprises a control panel seat, an upper cover and a door lock, wherein one of the control panel seat and the upper cover is provided with a locking hook, the other one of the control panel seat and the upper cover is provided with a locking hole, a blocking structure for blocking the locking hook from extending out is arranged at an outlet of the locking hook, and a top pushing part matched with the blocking structure is arranged on one side of the locking hole; when the upper cover is not closed in place, the blocking structure prevents the lock hook from extending out, and when the upper cover is closed in place, the push top pushes the blocking structure open, so that the lock hook extends into the lock hole. The invention also discloses a washing machine door lock detection method. According to the invention, the blocking structure is arranged at the outlet of the lock hook, so that the lock hook can be prevented from extending out under the condition that the upper cover is not closed in place, the door lock is effectively prevented from sending wrong operation signals to the washing machine, the danger that the upper cover of the washing machine runs under the unlocked state is fundamentally avoided, and the safety and the usability of the washing machine are greatly improved.

Description

Washing machine door lock detection device and detection method
Technical Field
The invention relates to the technical field of washing machines, in particular to a washing machine door lock detection device and a detection method capable of preventing a washing machine from running under the condition that a door lock is not locked.
Background
At present, in the operation process of a washing machine, in order to prevent a user from accidentally extending a hand into a machine barrel to cause accidental injury, a door lock is usually installed in an upper cover, and the upper cover and a control panel seat are locked through the door lock to ensure the safety of the user. Specifically, the opening and closing state of the upper cover is detected by a door switch detection device of the washing machine, if the upper cover is detected to be closed, a lock tongue or a lock hook of the door lock extends out to be clamped into a corresponding lock hole of the upper cover, so that the upper cover cannot be opened, and then the door lock sends a locking signal to a controller to control a washing program to be normally carried out; if the upper cover is detected not to be closed, the door lock does not act, the working circuit of the washing machine is kept disconnected, and the washing machine cannot normally run at the moment. However, when the door switch detection device fails, the situation that the upper cover is not closed but an upper cover closing signal is detected occurs, at this time, the door lock acts, the bolt or the latch hook extends out, and the upper cover is not locked actually, and in this state, the washing machine can still operate normally, thereby bringing about great potential safety hazard to operators.
Based on the above, there is a need for a door lock detection device and a door lock detection method using the same, which can prevent the door lock from extending out when the upper cover is not closed in place, so as to solve the above problems.
Disclosure of Invention
An object of the present invention is to provide a door lock detecting device capable of preventing a door lock from being protruded when an upper cover is not closed in place, effectively preventing the door lock from sending an erroneous operation signal to a washing machine, and greatly improving the safety of the washing machine.
The invention also aims to provide a method for detecting the door lock by using the washing machine door lock detection device, which can effectively solve the problem of poor safety of the washing machine caused by wrong door lock detection of the existing washing machine door switch detection device.
In order to achieve the purpose, the invention adopts the following technical scheme:
a washing machine door lock detection device comprises a control panel seat, an upper cover, a door lock and a controller, wherein one of the control panel seat and the upper cover is provided with a lock hook, the other one of the control panel seat and the upper cover is provided with a lock hole, and the lock hook extends out or retracts under the control of the controller; a blocking structure for blocking the latch hook from extending out is arranged at the outlet of the latch hook, and a pushing top matched with the blocking structure is arranged near the latch hole;
when the upper cover is not closed in place, the blocking structure prevents the locking hook from extending out, and the door lock sends an unlocking signal to the controller;
when the upper cover is closed in place, the push top pushes the blocking structure away, the lock hook extends into the lock hole, and the door lock sends a locking signal to the controller.
As a preferred scheme of the washing machine door lock detection device, an electromagnetic switch is arranged in the door lock, and when the latch hook is blocked from extending out, the electromagnetic switch is switched off; when the lock hook stretches into the lock hole, the electromagnetic switch is closed.
As a preferred scheme of the washing machine door lock detection device, the control panel seat is provided with a lock hook and a blocking structure, and the upper cover is provided with a lock hole and a push top.
As an optimal scheme of the washing machine door lock detection device, the lock hook extends in a translation mode, the blocking structure is a limiting block arranged in the extending direction of the lock hook, and the limiting block moves up and down under the pushing of the pushing top.
As a preferred scheme of the washing machine door lock detection device, the lock hook is in a rotary extending type, the blocking structure is a limiting column arranged in the control panel seat, and the limiting column moves up and down along a limiting hole in the control panel seat under the action of the pushing top part of the upper cover; when the upper cover is closed in place, the limiting columns retract into the limiting holes, and the locking hooks can extend out in a rotating mode; when the upper cover is not closed in place, the locking hook is blocked by the limiting column and cannot rotate.
As a preferred scheme of the washing machine door lock detection device, a spring is installed in the limiting hole, and the top end of the limiting column is kept to extend out of the limiting hole under the action of the spring in a free state.
As a preferred scheme of the washing machine door lock detection device, the top end of the limiting column is provided with a smooth chamfer angle for matching with the pushing top part of the upper cover.
As a washing machine lock detection device's preferred scheme, the bottom of spacing post is equipped with the spacing groove, and the spacing inslot is installed the retaining ring for prevent that spacing post from landing from spacing hole.
The door lock detector for washing machine includes one door switch detector connected to the controller to detect the opening and closing of the upper cover.
As a preferable scheme of the washing machine door lock detection device, the door switch detection device is a pressure sensor arranged on the control panel seat.
As a preferable scheme of the washing machine door lock detection device, at least two mutually linked lock hooks are arranged on the control panel seat, wherein the blocking structure is arranged at an outlet of at least one lock hook.
After a washing machine sends a door lock starting signal, the state of a door lock is detected by using the washing machine door lock detection device according to any scheme.
The preferable scheme of the washing machine door lock detection method comprises the following steps:
A. starting the washing machine;
B. issuing a door lock starting signal;
C. detecting whether a latch hook of the door lock extends out of the upper lock cover or not, and starting a washing program if the upper lock cover is locked; if the upper cover is not locked, returning to the step B to send a door lock starting signal again; if the door lock locking signal is not received after the door lock starting signal is sent for three times, an alarm is given to prompt that the upper cover is not closed to the right position.
The invention has the beneficial effects that:
according to the invention, the blocking structure is arranged at the outlet of the lock hook, so that the lock hook can be prevented from extending out under the condition that the upper cover is not closed in place, the door lock is effectively prevented from sending wrong operation signals to the washing machine, the danger that the upper cover of the washing machine runs under the unlocked state is fundamentally avoided, and the safety and the usability of the washing machine are greatly improved; the invention utilizes the accurate matching of the ejector part and the blocking structure, can firmly lock the upper cover when the upper cover is closed in place, has simple structure, accurate movement process and safe and reliable work, and solves the safety problem of the washing machine caused by inaccurate detection signal and wrong extension of a bolt in the process of locking the upper cover by the existing door lock.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the contents of the embodiments of the present invention and the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a door lock detection device for translating an extended shackle according to a first embodiment of the present invention (in a state where a door is not closed);
fig. 2 is a schematic structural diagram of a door lock detection device for translating an extended shackle according to a first embodiment of the present invention (in a closed state of a door);
fig. 3 is a schematic structural diagram of a door lock detection device for rotating an extended lock hook according to a first embodiment of the present invention (in a state where a door is not closed);
FIG. 4 is a cross-sectional view of FIG. 3;
fig. 5 is a schematic structural diagram of a door lock detection device for rotating an extended lock hook according to an embodiment of the present invention (in a door closed state);
fig. 6 is a schematic structural diagram of a limiting column according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a double interlocking latch hook according to a first embodiment of the present invention (when the door is not closed);
fig. 8 is a schematic structural diagram of a double interlocking latch hook according to a first embodiment of the present invention (in a closed state of the door);
fig. 9 is a flowchart of a washing machine door lock detection method according to a second embodiment of the present invention.
In the figure:
1. a control panel base; 2. an upper cover; 3. a latch hook; 31. an active side latch hook; 32. a driven-side latch hook; 33. a connecting rod; 4. a lock hole; 51. a limiting block; 52. a limiting column; 6. pushing the top; 7. and a limiting hole.
Detailed Description
In order to make the technical problems solved, technical solutions adopted and technical effects achieved by the present invention clearer, the technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example one
As shown in fig. 1 to 6, the present embodiment provides a preferred washing machine door lock detection device, which includes a control panel base 1, one side of the control panel base 1 is rotatably connected to an upper cover 2, a locking hook 3 of a door lock is installed on the control panel base 1, a locking hole 4 matched with the locking hook 3 is formed in the upper cover 2, and after the upper cover 2 is closed, a controller can control the locking hook 3 to extend into the locking hole 4, so as to lock the upper cover 2. Furthermore, a blocking structure capable of sliding up and down is further arranged at an outlet of the locking hook 3 on the control panel seat 1, and the blocking structure can prevent the locking hook 3 from extending out; correspondingly, the upper cover 2 is provided with a pushing top part 6 matched with the blocking structure and used for pushing the blocking structure downwards so that the locking hook 3 can extend into the locking hole 4.
Specifically, the door lock detection device further comprises a door switch detection device for detecting the opening and closing conditions of the upper cover 2, when the door switch detection device detects that the upper cover 2 is closed, a door closing signal can be sent to the controller, then the controller controls the lock hook 3 to extend, and the washing machine starts a washing or dewatering program. Specifically, the door switch detecting means is a pressure sensor provided on the control panel base 1, and judges whether the upper cover 2 is closed or not by sensing the pressure of the upper cover 2. However, in operation, the door switch detection device may mistakenly send a door closing signal when the upper cover 2 is not closed in place, at this time, due to the existence of the blocking structure, the normal extension of the locking hook 3 can be prevented, and then the door lock sends an unlocking signal to the controller to prevent the washing machine from running; if the upper cover 2 is closed in place, the top pushing part 6 pushes the blocking structure downwards, the lock hole 4 is just opposite to the lock hook 3, the lock hook 3 can extend into the lock hole 4 to lock the upper cover 2, and then the door lock sends a locking signal to the controller to control the washing machine to normally operate. Here, an electromagnetic switch may be provided in the door lock, which is turned off when the extension of the latch hook 3 is blocked, and feeds back a door non-locking signal to the controller; when the lock hook 3 extends into the lock hole 4, the electromagnetic switch is closed, and a door locking signal is fed back to the controller.
According to the invention, the blocking structure is arranged at the outlet of the lock hook 3, so that the lock hook 3 can be prevented from extending out under the condition that the upper cover 2 is not closed in place, the phenomenon that a door lock sends a wrong operation signal to the washing machine is effectively avoided, the danger that the upper cover 2 of the washing machine runs under the unlocked state is fundamentally avoided, and the safety and the usability of the washing machine are greatly improved. The door lock detection device is suitable for the translational extending type lock hook 3 and the rotational extending type lock hook 3, and the two modes are specifically arranged as follows:
1) as shown in fig. 1-2, the locking hook 3 is of a translational extension type, the blocking structure is a limiting block 51 disposed in the extension direction of the locking hook 3, and a spring is fixedly disposed at the bottom of the limiting block 51, so that the limiting block 51 is blocked at the outlet of the locking hook 3 in a normal state, and moves downward after being pushed by the pushing top 6 of the upper cover 2, thereby opening the outlet of the locking hook 3. Here, the top pushing part 6 is located at the bottom of the upper cover 2, and a smooth chamfer is provided on the top pushing part, and a smooth chamfer is also provided at the top end of the limiting block 51 for cooperating with the top pushing part 6 of the upper cover 2 to realize a smooth movement of the detecting device. The lock hook 3 and the blocking structure in the mode are simple in design and convenient to manufacture, and the production cost of the washing machine is greatly saved.
2) As shown in fig. 3-6 (the upper cover is omitted), the locking hook 3 is extended in rotation, and the blocking structure is a limiting column 52 installed in the control panel seat 1. Specifically, spacing hole 7 has been seted up near the position of latch hook 3 on the control panel seat 1, spacing post 52 movable mounting is in spacing hole 7, and the lower part cover of spacing post 52 is equipped with the spring, makes spacing post 52 under natural state (when upper cover 2 was opened promptly), keeps the top to stretch out outside spacing hole 7, at this moment, because spacing post 52 is in on the rotation direction of latch hook 3 to make the rotation of latch hook 3 receive the restriction, can't stretch out. The upper cover 2 is provided with a top pushing part 6 at a corresponding position, the top pushing part 6 is preferably a pressing block arranged on one side of the lock hole 4, the pressing block is in contact with the top end of the limiting column 52 in the closing process of the upper cover 2, the limiting column 52 is pressed down and retracted into the limiting hole 7, at the moment, the limiting of the limiting column 52 on the lock hook 3 is relieved, and the lock hook 3 can extend out in a rotating mode and is in perfect fit with the lock hole 4, so that the upper cover 2 is locked. Further, the top end of the limiting column 52 is provided with a smooth chamfer for matching with the pushing top part 6 of the upper cover 2; the bottom of spacing post 52 has seted up the spacing groove, and the spacing inslot is equipped with the e type retaining ring, can restrict spacing post 52 upward movement's displacement, prevents that spacing post 52 from landing from spacing hole 7.
In addition, the lock hooks 3 and the lock holes 4 can be arranged in one group or two or more groups, each group of lock hooks 3 preferably adopts a linkage structure, and the blocking structure is arranged at the outlet of at least one lock hook 3, so that other lock hooks 3 can not extend out as long as one group of lock hooks 3 is blocked, and the locking safety of the upper cover 2 and the control panel seat 1 is further ensured. As shown in fig. 7 and 8, for simplification, two sets of rotating extending-out latch hooks, namely, a driving-side latch hook 31 and a driven-side latch hook 32, are disposed on the control panel base 1 in the present embodiment, and the two latch hooks 3 are connected through a connecting rod 33 or a pull belt, so that when the controller operates, the controller controls the driving-side latch hook 31 to extend out, and simultaneously drives the driven-side latch hook 32 to perform the same operation.
The invention utilizes the accurate matching of the ejector part 6 and the blocking structure, can firmly lock the upper cover 2 when the upper cover 2 is closed in place, has simple structure, accurate movement process and safe and reliable work, and solves the safety problem of the washing machine caused by inaccurate detection signal and wrong extension of a bolt in the process of locking the upper cover 2 by the existing door lock.
Example two
The embodiment provides a washing machine door lock detection method, which comprises the following steps: after the washing machine issues the door lock starting signal, the door lock detection device according to the first embodiment is used for detecting the state of the door lock.
Specifically, as shown in fig. 9, the method includes the following steps:
A. starting the washing machine;
a1, detecting the open-close state of the upper cover 2;
in this step, the open/close state of the upper cover 2 is detected by a door open/close detection device of the washing machine, and if the upper cover 2 is detected to be closed, a door close signal is sent to the controller, and the process goes to step B; if the upper cover 2 is detected to be opened, the step is returned to for detection again.
B. Issuing a door lock starting signal;
here, the controller controls the latch hook 3 of the door lock to be moved to protrude outward so as to be engaged with the latch hole 4 of the upper cover 2.
C. Detecting whether a lock hook 3 of the door lock extends out of the upper lock cover 2 by using a door lock detection device, and starting a washing or dewatering procedure if the upper cover 2 is locked; if the upper cover 2 is not locked, returning to the step B to send a door lock starting signal again; if the door lock locking signal is not fed back after the door lock starting signal is sent for three times, an alarm is given to prompt that the upper cover 2 is not closed in place.
In the embodiment, as the door lock detection device is provided with the blocking mechanism at the lock hook 3, when the controller sends a door lock starting signal, the lock hook 3 of the door lock can not smoothly extend out, only when the upper cover 2 is really closed, the lock hook 3 of the door lock can extend into the lock hole 4 of the upper cover 2 to lock the upper cover 2, and at the moment, the door lock feeds a locking signal back to the controller to control the washing machine to normally use; when the upper cover 2 is opened or not closed in place, the blocking structure prevents the locking hook 3 from extending out, the door lock feeds a blocking signal back to the controller, and after the controller receives the blocking signal for three times continuously, the controller sends an alarm to prompt a user that the upper cover 2 is not well covered. The detection process is accurate and reliable, and the potential safety hazard of the washing machine caused by inaccurate detection signals and mistaken extension of the latch hook of the existing washing machine door lock is effectively solved.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims (10)

1. A washing machine door lock detection device comprises a control panel seat (1), an upper cover (2), a door lock and a controller, and is characterized in that one of the control panel seat (1) and the upper cover (2) is provided with a lock hook (3), the other one of the control panel seat (1) and the upper cover (2) is provided with a lock hole (4), and the lock hook (3) extends out or retracts under the control of the controller; a blocking structure for blocking the locking hook (3) from extending out is arranged at the outlet of the locking hook, and a pushing top part (6) matched with the blocking structure is arranged near the locking hole (4);
when the upper cover (2) is not closed to a position, the blocking structure prevents the locking hook (3) from extending out, and the door lock sends an unlocking signal to the controller;
when the upper cover (2) is closed in place, the push top (6) pushes away the blocking structure, so that the lock hook (3) extends into the lock hole (4), and the door lock sends a locking signal to the controller.
2. The washing machine door lock detection device according to claim 1, wherein the control panel base (1) is provided with a locking hook (3) and a blocking structure, and the upper cover (2) is provided with a locking hole (4) and a top pushing part (6).
3. The washing machine door lock detection device according to claim 2, wherein the locking hook (3) is in a translational extension type, the blocking structure is a limiting block (51) arranged in the extension direction of the locking hook (3), and the limiting block (51) moves up and down under the pushing of the pushing top part (6).
4. The washing machine door lock detection device according to claim 2, characterized in that the latch hook (3) is extended rotationally, the blocking structure is a limit post (52) installed in the control panel seat (1), and the limit post (52) moves up and down along a limit hole (7) in the control panel seat (1) under the action of the push top portion (6) of the upper cover (2); when the upper cover (2) is closed in place, the limiting column (52) retracts into the limiting hole (7), and the locking hook (3) can extend out in a rotating mode; when the upper cover (2) is not closed to the position, the locking hook (3) is blocked by the position limiting column (52) and cannot rotate.
5. The washing machine door lock detection device according to claim 4, characterized in that a spring is installed in the limiting hole (7), and the top end of the limiting column (52) is kept to extend out of the limiting hole (7) under the action of the spring in a free state.
6. The washing machine door lock detection device according to claim 5, characterized in that the top end of the limit post (52) is provided with a smooth chamfer for matching with the top pushing part (6) of the upper cover (2).
7. The washing machine door lock detection device according to claim 6, wherein a limiting groove is formed at the bottom end of the limiting column (52), and a retaining ring is installed in the limiting groove and used for preventing the limiting column (52) from sliding down from the limiting hole (7).
8. Washing machine door lock detection device according to any of claims 1-7, characterized in that at least two interlocking hooks are provided on the control panel base (1), wherein the blocking structure is provided at the exit of at least one of the hooks.
9. A washing machine door lock detection method is characterized in that after a washing machine sends a door lock starting signal, the state of a door lock is detected by using the washing machine door lock detection device as claimed in any one of claims 1 to 8.
10. The washing machine door lock detection method according to claim 9, comprising the steps of:
A. starting the washing machine;
B. issuing a door lock starting signal;
C. detecting whether a lock hook (3) of the door lock extends out of the upper lock cover (2), and starting a washing program if the upper lock cover (2) is locked; if the upper cover (2) is not locked, returning to the step B to send a door lock starting signal again; if the door lock locking signal is not received after the door lock starting signal is sent for three times, an alarm is given to prompt that the upper cover (2) is not closed in place.
CN201611072854.6A 2016-11-29 2016-11-29 Washing machine door lock detection device and detection method Active CN108118492B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201611072854.6A CN108118492B (en) 2016-11-29 2016-11-29 Washing machine door lock detection device and detection method
PCT/CN2017/113507 WO2018099386A1 (en) 2016-11-29 2017-11-29 Detection device and detection method for door lock of washing machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201611072854.6A CN108118492B (en) 2016-11-29 2016-11-29 Washing machine door lock detection device and detection method

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CN108118492B true CN108118492B (en) 2021-05-14

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