Electromagnetic door lock

Abstract

The electromagnetic door lock comprises a shell, a locking body provided with a locking body torsion spring, the locking body is rotatably installed in the shell, the shell is provided with a lock hole for inserting a door hook, a locking plate assembly provided with a main spring, a door closing connecting plate, a switch operating plate and an electromagnetic driving module, the locking plate assembly is movably installed in the shell and is arranged on one side of the locking body and linked with the locking body, the locking body is linked with the switch operating plate through the door closing connecting plate, the electromagnetic driving module is provided with a signal switch, the switch operating plate is provided with a trigger structure, the trigger structure is matched with the signal switch and is used for controlling the opening and closing of the door opening signal output by the electromagnetic driving module. The door lock can reduce the operation force when closing and opening the door, can produce a suction feeling when closing the door and can improve the user experience.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of household appliance door locks, and in particular to an electromagnetic door lock.

BACKGROUND

[0002] Many existing household appliances (such as washing machines, dryers, washer-dryer integrated machines, etc.) need to be installed with door locks. When the household appliance is running, the door lock locks the door cover to prevent the user from manually pulling open the door cover. When the running is completed, the door lock is unlocked, and it is convenient for the user to manually pull open the door cover.

[0003] With the development of household appliances and the improvement of user demand, the embedded door cover is very popular in the market. Because there is no pull handle, the traditional manual door pulling cannot be used, and only mechanical pressing door opening or electric door opening can be used.

[0004] The mechanical pressing door opening has the following disadvantages in the door opening and closing action:

[0005] 1. When closing the door, the door lock needs to be pressed to the closing trigger position to achieve closing the door, and when opening the door, it also needs to be pressed to the opening trigger position to achieve opening the door. The closing / opening trigger position is deeper than the locking position, and the closing / opening force is greater than that of the traditional door cover, and the user experience is poor.

[0006] 2. During the entire closing action, the closing force required is continuously increasing, and there is no jump in force before the closing is successful, and there is no suction feeling.

[0007] The disadvantage of the electric door opening mode is that the display screen needs to be opened first, and then the door opening key on the display screen is touched. The operation steps and operation time are not as simple as pressing.

[0008] In addition, the traditional washing machine needs to be integrated with an automatic door opening function after running in a humid and closed environment for a long time, so that the internal clothes can be ventilated.

SUMMARY

[0009] The purpose of the present application is to solve the problems in the prior art, and to provide an electromagnetic door lock which can reduce the operation force when closing and opening the door, and produce a suction feeling when closing the door, thereby improving the user experience.

[0010] In order to achieve the above object, the present application provides an electromagnetic door lock, comprising a shell, a locking body provided with a locking body torsion spring, the locking body being rotatably installed in the shell, the shell being provided with a lock hole for inserting a door hook, further comprising a locking plate assembly provided with a main spring, a door closing connecting plate, a switch operating plate and an electromagnetic drive module, the locking plate assembly being movably installed in the shell and arranged on one side of the locking body in linkage therewith, the locking body being in linkage with the switch operating plate through the door closing connecting plate, the electromagnetic drive module being provided with a signal switch, the switch operating plate being provided with a trigger structure, the trigger structure being in cooperation with the signal switch for controlling the opening and closing of the door opening signal output by the electromagnetic drive module.

[0011] Preferably, the trigger structure is an operating plate pit, the operating plate pit being arranged on the side of the switch operating plate facing the electromagnetic drive module, the switch operating plate controlling the action of the signal switch through the operating plate pit to switch the opening and closing of the door opening signal output by the electromagnetic drive module.

[0012] Preferably, the locking plate assembly comprises a main locking plate, an auxiliary locking plate and a door opening drive plate, the auxiliary locking plate being movably installed in the main locking plate through an auxiliary spring, the locking body being provided with a power conversion protrusion, the auxiliary locking plate applying an auxiliary door closing power to the locking body when abutting against the lower side of the power conversion protrusion.

[0013] Preferably, the side of the locking body facing the auxiliary locking plate is provided with a power conversion protrusion, the upper end surface of the power conversion protrusion having a locking body upper arc surface and the lower end surface having a locking body lower arc surface, the auxiliary locking plate applying a resistance to the locking body when abutting against the locking body upper arc surface to prevent the rotation of the locking body for closing the door, the auxiliary locking plate applying a power to the locking body when abutting against the locking body lower arc surface to drive the rotation of the locking body for closing the door.

[0014] Preferably, the locking body is provided with an auxiliary boss, the locking body being in linkage with the door closing connecting plate through the auxiliary boss, the door closing connecting plate being provided with a driving groove matched with the auxiliary boss.

[0015] Preferably, the auxiliary locking plate is provided with an auxiliary spring, one end of the auxiliary locking plate facing the locking body having a power protruding part, the power protruding part abutting against the power conversion protrusion.

[0016] As preferred, the opening door driving plate is equipped with a driving plate spring, the side of the opening door driving plate away from the driving plate spring is provided with a boss, the auxiliary locking plate is provided with a step matched with the boss, when the boss abuts against the step, an action force preventing the auxiliary locking plate from moving is applied, and when the boss is separated from the abutment against the step, the action force preventing the auxiliary locking plate from moving is released.

[0017] As preferred, the side of the door closing connecting plate towards the switch operating plate is provided with a stepped chute, the side of the switch operating plate away from the door closing connecting plate is equipped with an operating plate spring, one side of the stepped chute is provided with a driving slope, and the door closing connecting plate drives the switch operating plate to move through the stepped chute.

[0018] As preferred, the electromagnetic driving module further comprises a door locking electromagnetic mechanism, and the door locking electromagnetic mechanism is provided with an extendable locking clamp for preventing the auxiliary locking plate from moving.

[0019] As preferred, the electromagnetic driving module further comprises a door opening electromagnetic mechanism, and the door opening electromagnetic mechanism is used for controlling the action of the opening door driving plate to separate from the abutment against the auxiliary locking plate and release the action force preventing the auxiliary locking plate from moving.

[0020] The beneficial effects of the present application are as follows:

[0021] 1. When closing the door, overpressure to the door closing position is not needed, and the closing force is reduced. (In most cases, the door lock is automatically opened after the operation is completed, and the number of times of closing the door is much greater than the number of times of pressing the door to open.)

[0022] 2. The suction feeling when closing the door is increased, and the operation experience is improved.

[0023] 3. The door closing sound is provided when the door lock is closed, and the user is reminded.

[0024] 4. The electric opening door after pressing is realized through pressing the detection signal switch and the electric opening module.

[0025] The features and advantages of the present application will be described in detail with reference to the embodiments in conjunction with the drawings. [BRIEF DESCRIPTION OF DRAWINGS]

[0026] Figure 1 is an exploded view of the electromagnetic door lock of the present application;

[0027] Figure 2 is a schematic view of the door opening state of the present application;

[0028] Figure 3 is Figure 2 is a top view of the cooperation state of the door closing connecting plate and the switch operating plate in the present application;

[0029] Figure 4 is Figure 3The profile view of the switch operation plate and the signal switch in the middle of the door closing operation;

[0030] Figure 5 The internal structure of the manual door closing operation of the present application;

[0031] Figure 6 The Figure 5 The top view of the auxiliary locking plate and the door opening driving plate in the middle of the door opening operation;

[0032] Figure 7 The door closing state of the present application;

[0033] Figure 8 The profile view of the switch operation plate and the signal switch in the middle of the door closing operation;

[0034] Figure 9 The top view of the locking mechanism and the auxiliary locking plate in the locked state of the present application;

[0035] Figure 10 The top view of the auxiliary locking plate and the door opening driving plate in the middle of the door opening operation;

[0036] Figure 11 The schematic diagram of the complete release of the locking body during the electric door opening operation;

[0037] Figure 12 The schematic diagram of the electric door opening operation after the continuous pressing of the door cover in the closed state of the present application;

[0038] Figure 13 The Figure 12 The top view of the door closing connecting plate and the switch operation plate in the middle of the door closing operation;

[0039] Figure 14 The Figure 13 The profile view of the switch operation plate and the signal switch in the middle of the door closing operation;

[0040] Figure 15 The circuit principle diagram for judging whether there is a pressing door opening operation;

[0041] Figure 16 The structure schematic diagram of the locking body of the electromagnetic door lock of the present application;

[0042] Figure 17 The structure schematic diagram of the auxiliary locking plate of the electromagnetic door lock of the present application;

[0043] Figure 18 The structure schematic diagram of the door opening driving plate of the electromagnetic door lock of the present application;

[0044] Figure 19 The structure schematic diagram of the door closing connecting plate of the electromagnetic door lock of the present application;

[0045] Figure 20 is a structure diagram of a switch operating plate of an electromagnetic door lock.

CONCRETE EMBODIMENT

[0046] Referring to Figure 1 , Figure 4 and Figure 8 , the electromagnetic door lock comprises a shell 1, a locking body 2 provided with a locking body torsion spring 20, the locking body 2 is rotatably installed in the shell 1, the shell 1 is provided with a lock hole 10 for inserting a door hook 100, and a rear cover 9 is further provided on the shell 1, further comprising a locking plate assembly provided with a main spring 30, a door closing connecting plate 6, a switch operating plate 7 and an electromagnetic drive module 8, the locking plate assembly is movably installed in the shell 1 and is arranged on one side of the locking body 2 and linked with the locking body 2, the locking body 2 is linked with the switch operating plate 7 through the door closing connecting plate 6, the electromagnetic drive module 8 is provided with a signal switch 81, the switch operating plate 7 is provided with a trigger structure, the trigger structure cooperates with the signal switch 81 and is used for controlling the opening and closing of the door opening signal output by the electromagnetic drive module 8. Among them, the electromagnetic drive module 8 can output multiple signals, namely OFF-ON-OFF, including the door opening position: the signal switch is off; the door closing position: the signal switch is closed; the overpressure position: the signal switch is off. The conventional door lock in the market can only output two signals, namely OFF-ON, the door opening position, the signal switch is off, and the door closing position and the inside: the signal switch is closed.

[0047] Further, when the trigger structure is in contact with the signal switch 81, the electromagnetic drive module 8 outputs the ON signal, and when it is not in contact, it outputs the OFF signal. In this embodiment, the trigger structure is an operating plate pit 71, the operating plate pit 71 is arranged on the side of the switch operating plate 7 facing the electromagnetic drive module 8, the switch operating plate 7 controls the action of the signal switch 81 through the operating plate pit 71, and switches the opening and closing of the door opening signal output by the electromagnetic drive module 8.

[0048] Further, referring to Figure 1 , the locking plate assembly comprises a main locking plate 3, an auxiliary locking plate 4, and a door opening drive plate 5, the auxiliary locking plate 4 is movably installed in the main locking plate 3 through an auxiliary spring 40, the locking body 2 is provided with a power conversion protrusion 200, and when the auxiliary locking plate 4 is in contact with the lower side of the power conversion protrusion 200, an auxiliary door closing power is applied to the locking body 2; the door opening drive plate 5 is linked with the auxiliary locking plate 4 and is used for applying a force to the auxiliary locking plate 4 to prevent it from moving.

[0049] Further, referring to Figure 5The locking body 2 is provided with a power conversion protrusion 200 on the side facing the auxiliary locking plate 4, the upper end surface of the power conversion protrusion 200 is provided with a locking body upper arc surface 21, and the lower end surface is provided with a locking body lower arc surface 22, when the auxiliary locking plate 4 abuts against the locking body upper arc surface 21, a resistance to the rotation of the locking body 2 to close the door is applied, and when the auxiliary locking plate 4 abuts against the locking body lower arc surface 22, a power to drive the rotation of the locking body 2 to close the door is applied. In the embodiment, the locking body 2 is provided with an auxiliary boss 23, the locking body 2 is connected with the door closing plate 6 through the auxiliary boss 23, and the door closing plate 6 is provided with a driving groove 61 matched with the auxiliary boss 23.

[0050] Further, referring to Figure 5 The auxiliary locking plate 4 is provided with an auxiliary spring 40, and the end of the auxiliary locking plate 4 facing the locking body 2 is provided with a power protrusion 41 abutting against the power conversion protrusion 200.

[0051] Further, referring to Figure 6 The door opening driving plate 5 is provided with a driving plate spring 50, the side of the door opening driving plate 5 away from the driving plate spring 50 is provided with a boss 51, the auxiliary locking plate 4 is provided with a step 42 matched with the boss 51, when the boss 51 abuts against the step 42, an action force preventing the movement of the auxiliary locking plate 4 is applied, and when the boss 51 is separated from the abutment against the step 42, the action force preventing the movement of the auxiliary locking plate 4 is released.

[0052] Further, referring to Figure 3 The door closing plate 6 is provided with a stepped inclined groove 62 on the side facing the opening and closing operation plate 7, the side of the opening and closing operation plate 7 away from the door closing plate 6 is provided with an operation plate spring 70, one side of the stepped inclined groove 62 is provided with a driving inclined surface, and the door closing plate 6 drives the opening and closing operation plate 7 to move to the side compressing the operation plate spring 70 through the stepped inclined groove 62.

[0053] Further, referring to Figure 9 The electromagnetic driving module 8 further comprises a door locking electromagnetic mechanism 82, and the door locking electromagnetic mechanism 82 is provided with a retractable locking clamp 821 to prevent the movement of the auxiliary locking plate 4 to the side compressing the auxiliary spring 40.

[0054] Further, referring to Figure 10 The electromagnetic driving module 8 further comprises a door opening electromagnetic mechanism 83, and the door opening electromagnetic mechanism 83 is used to control the action of the door opening driving plate 5 to separate from the abutment against the auxiliary locking plate 4 and release the action force preventing the movement of the auxiliary locking plate 4.

[0055] The working process of the present application is as follows:

[0056] A. Open door state

[0057] Referring to Figure 2 and Figure 3 , the locking body 2 is in the open door state under the action of the locking body torsion spring 20, and the door hook 100 can freely enter and exit the lock hole 10. Referring to Figure 4 , in the open door state, the signal switch 81 is away from the operating plate pit 71, the signal switch 81 is OFF, and the output is in the open door state.

[0058] B. Manual door closing action process

[0059] Referring to Figure 5 , when the door is closed, the locking body upper arc surface 21 drives the auxiliary locking plate 4 and the power assisting protruding part 41 to move rightward in the arrow direction; referring to Figure 6 , due to the cooperation and interference of the boss 51 of the open door driving plate 5 and the step 42 of the auxiliary locking plate 4, the main locking plate 3 and the open door driving plate 5 also synchronously move rightward against the action force of the main spring 30 until the locking body lower arc surface 22 contacts the power assisting protruding part 41, at this time, the resistance of the main locking plate 3 module is converted into power assistance, which acts on the locking body 2 in the door closing direction, assisting the door closing, and realizing the door closing suction effect. In this process, when the locking body 2 rotates, the auxiliary boss 23 cooperates with the driving groove 61 to drive the door closing connecting plate 6 to move leftward, the door closing connecting plate 6 drives the switch operating plate 7 to move toward one side of the compression operating plate spring 70 through the stepped inclined groove 62, so that the signal switch 81 enters the operating plate pit 71, and the action of the signal switch 81 is realized. Until the door closing state of Figure 7 is presented, at this time, the locking body 2 keeps the door closed state under the action of the main spring 30. Referring to Figure 8 , in the door closed state, the operating plate pit 71 of the switch operating plate 7 drives the signal switch 81 to close, and outputs the door closed signal.

[0060] Wherein, when the door is closed, the locking body 2 has a rightward and upward force on the auxiliary locking plate 4, and the auxiliary locking plate 4 is tightly attached to the upper end. After passing the turning point, the auxiliary locking plate 4 comes below the locking body 2, at this time, the auxiliary locking plate 4 is subjected to a downward and leftward action force under the action of the main spring 30, and the auxiliary locking plate 4 is tightly attached to the lower end of the shell 1. Because there is a gap between the auxiliary locking plate 4 and the shell 1, when passing from the tightly attached upper end to the tightly attached lower end, there is impact and collision, thereby generating sound, reminding the user that the door lock is closed.

[0061] In addition, the national standard washing machine requires that when it is not locked, accidental door closing must be prevented, and it must be able to push the door open from the inside. The manual door closing action is the same, in the case that the auxiliary locking plate 4 is not locked, the door hook 100 is strongly pulled, the locking body lower arc surface 22 of the locking body 2 overcomes the action force of the main spring 30, until the locking body upper arc surface 21 contacts, the force of the main spring 30 acts on the door opening, and the strong pulling door opening operation is realized.

[0062] C. Locked state

[0063] See Figure 9 When the door locking electromagnetic mechanism 82 is activated, the locking card 821 extends to prevent the auxiliary locking plate 4 from moving, so the door cannot be opened even if it is pulled forcefully.

[0064] D. Electric door opening action:

[0065] See Figure 10 When the locking electromagnetic mechanism 82 is in the reset state, the opening electromagnetic mechanism 83 is energized, and the electromagnetic force pulls the opening drive plate 5. The boss 51 of the opening drive plate 5 moves away from the step 42 of the auxiliary locking plate 4, and the auxiliary locking plate 4 loses its support. Under the action of the locking body torsion spring 20, it moves to the right until the locking body 2 is completely released. Figure 11 As shown. After the locking body 2 is fully released, it returns to... Figures 2 to 4 The door is now open; opening is complete.

[0066] E. Continuing to press the power open button after closing the door cover.

[0067] See Figures 12 to 14 With the door closed, continuing to press the door cover causes the door hook 100 to control the rotation of the locking body 2, simultaneously moving the closing connecting plate 6. This movement, via the stepped inclined groove 62, drives the switch operating plate 7 to move, causing the signal switch 81 to leave the operating plate recess 71 of the switch operating plate 7, thus turning the signal switch 81 OFF. When the system receives this OFF signal, it assumes a pressing action has occurred. After the pressing action is canceled, the door cover resets under the action of the locking body torsion spring 20. At this point, the switch operating plate 7 returns to its original position. Figure 7 , Figure 8 The status is that the signal switch 81 is ON. When the system detects a pressing action, it will control the automatic door opening electromagnetic mechanism 83 to activate, and then perform the electric door opening action (the principle is the same as the electric door opening action mentioned in D above).

[0068] When closing the door, through Figure 15 The opening and closing of the signal switch 81 determines whether the door opening action has been pressed. Figure 15 It also includes a locking magnet for the locking electromagnetic mechanism 82 and an opening electromagnet for the opening electromagnetic mechanism 83. The locking magnet of the locking electromagnetic mechanism 82 is linked to a signal switch 81. When the locking magnet is energized, the signal switch 81 closes when the door is locked and opens when the door is unlocked. When the opening electromagnet of the opening electromagnetic mechanism 83 is energized, the door is opened electrically, and the signal switch 81 opens after the door is opened.

[0069] The above embodiments are illustrative of the present invention and are not intended to limit the present invention. Any simple modifications to the present invention are within the scope of protection of the present invention.

Claims

1. An electromagnetic door lock comprising a housing (1), a lock body (2) provided with a lock body torsion spring (20), the lock body (2) being rotatably mounted in the housing (1), the housing (1) having a lock hole (10) for insertion of a door hook (100), characterized in that: Also include the locking plate assembly equipped with the main spring (30), door connecting plate (6), switch operation plate (7) and electromagnetic drive module (8), the locking plate assembly is movably mounted in the shell (1), and is arranged on one side of the locking body (2) and is linked with it, the locking body (2) is linked with the switch operation plate (7) through the door connecting plate (6), the electromagnetic drive module (8) is provided with a signal switch (81), the switch operation plate (7) is provided with a trigger structure, the trigger structure is matched with the signal switch (81), for controlling the opening and closing of the electromagnetic drive module (8) output door opening signal; the locking plate assembly includes a main locking plate (3), an auxiliary locking plate (4), a door opening drive plate (5), the auxiliary locking plate (4) is movably mounted in the main locking plate (3) through the auxiliary spring (40), the locking body (2) is provided with a power conversion protrusion (200), when the auxiliary locking plate (4) is abutted with the lower side of the power conversion protrusion (200), a door closing auxiliary power is applied to the locking body (2); the door opening drive plate (5) is linked with the auxiliary locking plate (4), for applying a force to the auxiliary locking plate (4) to prevent its movement; the electromagnetic drive module (8) further includes a door opening electromagnetic mechanism (83), the door opening electromagnetic mechanism (83) is used for controlling the door opening drive plate (5) to act, so that it is separated from the abutment of the auxiliary locking plate (4), and the force preventing the movement of the auxiliary locking plate (4) is removed; The electromagnetic drive module (8) can output three signals OFF-ON-OFF, the three signals OFF-ON-OFF correspond to the door opening position in turn: the signal switch is turned off; the lock position: the signal switch is closed; the overpressure position: the signal switch is turned off; when the system receives the third OFF signal, it will be considered that there is a pressing action and the door is opened by controlling the door opening electromagnetic mechanism (83) to act.

2. An electromagnetic door lock according to claim 1, characterized in that: The trigger structure is an operation plate pit (71), the operation plate pit (71) is arranged on the side of the switch operation plate (7) facing the electromagnetic drive module (8), the switch operation plate (7) controls the signal switch (81) to act through the operation plate pit (71), and the opening and closing of the electromagnetic drive module (8) output door opening signal is switched.

3. An electromagnetic door lock according to claim 1, wherein: The locking body (2) is provided with a power conversion protrusion (200) on the side facing the auxiliary locking plate (4), the upper end surface of the power conversion protrusion (200) has a locking body upper arc surface (21), and the lower end surface has a locking body lower arc surface (22), when the auxiliary locking plate (4) is abutted with the locking body upper arc surface (21), a resistance preventing the locking body (2) from rotating to close the door is applied to the locking body (2), when the auxiliary locking plate (4) is abutted with the locking body lower arc surface (22), a power driving the locking body (2) to rotate to close the door is applied to the locking body (2).

4. An electromagnetic door lock as claimed in claim 3, characterized in that: The locking body (2) is provided with an auxiliary boss (23), the locking body (2) is linked with the door connecting plate (6) through the auxiliary boss (23), and the door connecting plate (6) is provided with a driving groove (61) matched with the auxiliary boss (23).

5. An electromagnetic door lock according to claim 1, wherein: The auxiliary locking plate (4) is provided with an auxiliary spring (40), one end of the auxiliary locking plate (4) towards the locking body (2) has a power protrusion (41), the power protrusion (41) abuts against the power conversion protrusion (200).

6. An electromagnetic door lock according to claim 1, wherein: The door opening driving plate (5) is provided with a driving plate spring (50), the door opening driving plate (5) has a boss (51) on the side away from the driving plate spring (50), the auxiliary locking plate (4) is provided with a step (42) matched with the boss (51), when the boss (51) abuts against the step (42), an action force preventing the auxiliary locking plate (4) from moving is applied to the auxiliary locking plate (4), when the boss (51) is separated from the step (42), the action force preventing the auxiliary locking plate (4) from moving is released.

7. An electromagnetic door lock as defined in claim 1, wherein: The door closing connecting plate (6) has a stepped chute (62) on the side towards the switch operating plate (7), the switch operating plate (7) is provided with an operating plate spring (70) on the side away from the door closing connecting plate (6), one side of the stepped chute (62) has a driving slope, the door closing connecting plate (6) drives the switch operating plate (7) to move through the stepped chute (62).

8. An electromagnetic door lock as defined in claim 1, wherein: The electromagnetic driving module (8) further comprises a door locking electromagnetic mechanism (82), the door locking electromagnetic mechanism (82) is provided with an extendable locking clamp (821) to prevent the auxiliary locking plate (4) from moving.

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