CN115404666A - Electromagnetic door lock - Google Patents

Abstract

The invention provides an electromagnetic door lock, which comprises a shell and a locking body provided with a locking body torsional spring, wherein the locking body is rotatably arranged in the shell, the shell is provided with a lock hole for inserting a door hook, the electromagnetic door lock also comprises 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 arranged in the shell and is arranged at one side of the locking body in linkage with the locking body, the locking body is in linkage 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 triggering structure, and the triggering structure is matched with the signal switch and used for controlling the electromagnetic driving module to output a door opening signal to be opened and closed. The door lock can reduce the operating force when the door is closed and opened, can generate suction feeling when the door is closed, and improves the user experience.

Description

Electromagnetic door lock

[ technical field ] A

The invention relates to the technical field of household appliance door locks, in particular to an electromagnetic door lock.

[ background ] A method for producing a semiconductor device

The lock is all required to be installed in a lot of current domestic appliance (like washing machine, drying-machine, washing and drying all-in-one etc.), and when domestic appliance moved, the lock pinned the door closure, prevented that the user from manually pulling open the door closure, and after the operation, the lock unblock, convenience of customers manually pulls open the door closure.

With the development of household appliances and the improvement of user demands, the embedded door cover is popular in the market. Because the traditional manual sliding door cannot be adopted due to no sliding door handle, the door can be opened only by mechanically pressing the door or electrically opening the door.

The mechanical pressing door opening has the following defects in the door opening and closing action:

1. when closing the door, the lock need press to close the door and trigger the position and just can realize closing the door, also need press to open the door and trigger the position and just can realize opening the door during opening the door, and it is darker than the position of locking the door to close the door/the trigger position that opens the door, and it is bigger than traditional door closure that it is closed the door/open the door, and user experience worsens.

2. In the whole process of the door closing action, the required door closing force is continuously increased, and the force does not jump before the door is successfully closed, so that the hand feeling of suction is not generated.

The drawback that electronic mode of opening the door opened the door lies in: the display screen needs to be started first, and then the door opening key of the display screen is touched, so that the operation steps and the operation time are not as simple as those of a pressing type.

In addition, after the traditional washing machine is operated, the traditional washing machine is not taken out for a long time in a humid and closed environment, and the clothes in the traditional washing machine are easy to grow bacteria, mildew and smell, so that the traditional washing machine also needs to integrate an automatic door opening function, and is convenient for the ventilation of the clothes in the traditional washing machine.

[ summary of the invention ]

The invention aims to solve the problems in the prior art, and provides an electromagnetic door lock which can reduce the operation force during closing and opening of a door, can generate a suction feeling during closing the door and improves the user experience.

In order to achieve the purpose, the invention provides an electromagnetic door lock, which comprises a shell and a locking body provided with a locking body torsional spring, wherein the locking body is rotatably arranged in the shell, the shell is provided with a lock hole for inserting a door hook, the electromagnetic door lock further comprises 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 arranged in the shell and is arranged at one side of the locking body in linkage with the locking body, the locking body is in linkage 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 triggering structure, and the triggering structure is matched with the signal switch and used for controlling the electromagnetic driving module to output a door opening signal to be opened and closed.

Preferably, the triggering structure is an operation panel pit, the operation panel pit is arranged on one side of the switch operation panel facing the electromagnetic driving module, and the switch operation panel controls the signal switch action through the operation panel pit to switch the opening and closing of the electromagnetic driving module for outputting the door opening signal.

Preferably, the locking plate assembly comprises a main locking plate, an auxiliary locking plate and a door opening driving plate, the auxiliary locking plate is movably arranged in the main locking plate through an auxiliary spring, the locking body is provided with a power-assisted conversion bulge, and when the auxiliary locking plate abuts against the lower side surface of the power-assisted conversion bulge, power assistance for assisting door closing is applied to the locking body; the door opening drive plate is linked with the auxiliary locking plate and is used for applying acting force for preventing the auxiliary locking plate from moving

Preferably, an assisting conversion bulge is arranged on one side, facing the auxiliary locking plate, of the locking body, the upper end face of the assisting conversion bulge is provided with an upper locking body arc face, the lower end face of the assisting conversion bulge is provided with a lower locking body arc face, when the auxiliary locking plate abuts against the upper locking body arc face, resistance for preventing the locking body from rotating to close the door is applied to the locking body, and when the auxiliary locking plate abuts against the lower locking body arc face, assisting force for driving the locking body to rotate to close the door is applied to the locking body.

Preferably, the locking body is provided with an auxiliary boss, the locking body is in linkage with the door closing connecting plate in a matching manner through the auxiliary boss, and the door closing connecting plate is provided with a driving groove capable of being matched with the auxiliary boss.

Preferably, the auxiliary lock plate has an auxiliary spring disposed thereon, and the auxiliary lock plate has an assist projection portion at one end thereof facing the lock body, the assist projection portion abutting against the assist switching projection.

Preferably, a drive plate spring is arranged on the door opening drive plate, a boss is arranged on one side, back to the drive plate spring, of the door opening drive plate, a step matched with the boss is arranged on the auxiliary locking plate, when the boss abuts against the step, an acting force for preventing the auxiliary locking plate from moving is applied to the auxiliary locking plate, and when the boss is separated from abutting against the step, the acting force for preventing the auxiliary locking plate from moving is released.

Preferably, the door-closing link plate has a stepped chute on a side thereof facing the switch operating plate, an operating plate spring is disposed on a side of the switch operating plate opposite to the door-closing link plate, a driving slope is provided on a side of the stepped chute, and the door-closing link plate drives the switch operating plate to move via the stepped chute.

Preferably, the electromagnetic driving module further comprises a door-locking electromagnetic mechanism, and a retractable locking card is arranged on the door-locking electromagnetic mechanism and used for preventing the auxiliary locking plate from moving.

Preferably, the electromagnetic driving module further comprises a door opening electromagnetic mechanism, and the door opening electromagnetic mechanism is used for controlling the door opening driving plate to move, so that the door opening driving plate is separated from abutting against the auxiliary locking plate, and the acting force for preventing the auxiliary locking plate from moving is released.

The invention has the beneficial effects that:

1. when the door is closed, the door does not need to be pressed to the door closing position, and the door closing force is reduced. (in most cases, the door lock automatically opens after the operation is finished, and the door closing times are far more than the door opening times by pressing.)

2. The suction hand feeling when the door is closed is increased, and the operation experience is improved.

3. When the door lock is closed, a door closing sound is provided to remind a user.

4. Through pressing the signal switch and the electric switch module, the electric switch door is opened after pressing.

The features and advantages of the present invention will be described in detail by embodiments in conjunction with the accompanying drawings.

[ description of the drawings ]

FIG. 1 is an exploded view of an electromagnetic door lock of the present invention;

FIG. 2 is a schematic view of the door open state of the present invention;

FIG. 3 is a top view of the door closing link plate of FIG. 2 in engagement with the switch operating plate;

FIG. 4 is a cross-sectional view of the AA directional switch operating panel of FIG. 3 in a state of being engaged with the signal switch;

FIG. 5 is a top view of the internal structure of the manual door closing mechanism of the present invention;

FIG. 6 is a top view of the opening door actuator plate auxiliary locking plate of FIG. 5 in a mated condition;

FIG. 7 is a schematic view of the door closed state of the present invention;

FIG. 8 is a sectional view of the switch operating panel in cooperation with the signal switch in a closed state;

fig. 9 is a plan view of the electromagnetic door-locking mechanism of the present invention in a locked state, in cooperation with the auxiliary lock plate;

FIG. 10 is a plan view showing the state where the auxiliary lock plate is engaged with the door opening actuator at the time of the electric door opening operation;

FIG. 11 is a schematic view of the locking body fully released during an electrical door opening action;

FIG. 12 is a schematic view of the electrical door opening operation of the present invention after the door lid is further depressed in the closed state;

fig. 13 is a top view schematically illustrating the coupling state of the door closing link plate and the switch operating plate of fig. 12;

fig. 14 is a sectional view of the switch operating panel of fig. 13 in a state of being fitted with a signal switch;

FIG. 15 is a schematic circuit diagram for determining whether a door is being opened by pressing;

FIG. 16 is a schematic structural view of a locking body of the electromagnetic door lock of the present invention;

fig. 17 is a schematic structural view of an auxiliary locking plate of an electromagnetic door lock of the present invention;

fig. 18 is a schematic structural view of a door opening driving plate of an electromagnetic door lock according to the present invention;

FIG. 19 is a schematic view of the structure of the door closing plate of the electromagnetic door lock of the present invention;

fig. 20 is a schematic structural view of a switch operating plate of an electromagnetic door lock according to the present invention.

[ detailed description ] embodiments

Referring to fig. 1, 4 and 8, the electromagnetic door lock of the present invention includes a housing 1, a locking body 2 provided with a locking body torsion spring 20, the locking body 2 is rotatably installed in the housing 1, the housing 1 is provided with a lock hole 10 into which a door hook 100 is inserted, the housing 1 is further provided with a rear cover 9, the electromagnetic door lock further includes a locking plate assembly provided with a main spring 30, a door closing connecting plate 6, a switch operating plate 7 and an electromagnetic driving module 8, the locking plate assembly is movably installed in the housing 1 and is arranged on one side of the locking body 2 to be linked with the locking body, the locking body 2 is linked with the switch operating plate 7 through the door closing connecting plate 6, the electromagnetic driving module 8 is provided with a signal switch 81, the switch operating plate 7 is provided with a triggering structure, and the triggering structure is matched with the signal switch 81 to control the electromagnetic driving module 8 to output a door opening signal to open and close. Wherein, the electromagnetic drive module 8 can output multi-stage signals, namely OFF-ON-OFF, including the door opening position: the signal switch is disconnected; door locking position: the signal switch is closed; overpressure position: the signal switch is turned off. The conventional door lock ON the market can only output two sections of signals, namely OFF-ON, the door opening position, the signal switch is disconnected, and the door closing position is within the following range: the signal switch is closed.

Further, when the trigger structure is in conflict with the signal switch 81, the electromagnetic driving module 8 outputs an ON signal, and when the trigger structure is not in conflict, the electromagnetic driving module outputs an OFF signal. In this embodiment, the triggering structure is an operation plate recess 71, the operation plate recess 71 is disposed on a side of the switch operation plate 7 facing the electromagnetic driving module 8, and the switch operation plate 7 controls the signal switch 81 to operate through the operation plate recess 71, so as to switch the opening and closing of the door opening signal output by the electromagnetic driving module 8.

Further, referring to fig. 1, the locking plate assembly includes a main locking plate 3, an auxiliary locking plate 4, and a door opening driving plate 5, the auxiliary locking plate 4 is movably mounted in the main locking plate 3 through an auxiliary spring 40, a power-assisted conversion protrusion 200 is provided on the locking body 2, and when the auxiliary locking plate 4 abuts against the lower side of the power-assisted conversion protrusion 200, an auxiliary door closing assistance is applied to the locking body 2; the door opening driving plate 5 is linked with the auxiliary locking plate 4 and is used for applying acting force for preventing the auxiliary locking plate 4 from moving.

Further, referring to fig. 5, a power conversion protrusion 200 is disposed on a side of the locking body 2 facing the auxiliary locking plate 4, an upper end surface of the power conversion protrusion 200 has a locking body upper arc surface 21, a lower end surface of the power conversion protrusion has a locking body lower arc surface 22, when the auxiliary locking plate 4 abuts against the locking body upper arc surface 21, a resistance force for preventing the locking body 2 from rotating to close the door is applied to the locking body, and when the auxiliary locking plate 4 abuts against the locking body lower arc surface 22, a power assisting force for driving the locking body 2 to rotate to close the door is applied to the locking body. In this embodiment, the locking body 2 is provided with an auxiliary boss 23, the locking body 2 is coupled and linked with the door-closing connecting plate 6 through the auxiliary boss 23, and the door-closing connecting plate 6 is provided with a driving groove 61 capable of being matched with the auxiliary boss 23.

Further, referring to fig. 5, an auxiliary spring 40 is provided on the auxiliary lock plate 4, and an assist projection 41 is provided on an end of the auxiliary lock plate 4 facing the lock body 2, and the assist projection 41 abuts against the assist switching projection 200.

Further, referring to fig. 6, a driving plate spring 50 is disposed on the door opening driving plate 5, a boss 51 is disposed on a side of the door opening driving plate 5 facing away from the driving plate spring 50, a step 42 adapted to the boss 51 is disposed on the auxiliary locking plate 4, when the boss 51 abuts against the step 42, a force for preventing the auxiliary locking plate 4 from moving is applied to the auxiliary locking plate 4, and when the boss 51 is disengaged from the step 42, the force for preventing the auxiliary locking plate 4 from moving is released.

Further, referring to fig. 3, the side of the door-closing link plate 6 facing the switch operating plate 7 has a step chute 62, the side of the switch operating plate 7 facing away from the door-closing link plate 6 is provided with an operating plate spring 70, the side of the step chute 62 has a driving slope, and the door-closing link plate 6 drives the switch operating plate 7 to move toward the side of the compression operating plate spring 70 through the step chute 62.

Further, referring to fig. 9, the electromagnetic driving module 8 further includes a door-locking electromagnetic mechanism 82, and a retractable locking clip 821 is provided on the door-locking electromagnetic mechanism 82 for preventing the auxiliary locking plate 4 from moving toward one side of the compression auxiliary spring 40.

Further, referring to fig. 10, the electromagnetic driving module 8 further includes a door opening electromagnetic mechanism 83, and the door opening electromagnetic mechanism 83 is configured to control the door opening driving plate 5 to move, so that the door opening driving plate is disengaged from abutting against the auxiliary locking plate 4, and the acting force for preventing the auxiliary locking plate 4 from moving is released.

The working process of the invention is as follows:

A. open state of the door

Referring to fig. 2 and 3, the locking body 2 is in the open state under the action of the locking body torsion spring 20, and the door hook 100 can freely enter and exit from the locking hole 10. Referring to fig. 4, in the door open state, the signal switch 81 is separated from the operation panel recess 71, and the signal switch 81 is OFF, outputting a signal in the door open state.

B. Manual door closing process

Referring to fig. 5, when the door is closed, the upper arc surface 21 of the locking body drives the auxiliary locking plate 4 and the boosting protrusion 41 to move rightward along the arrow direction; referring to fig. 6, due to the interference of the protrusion 51 of the door opening driving plate 5 and the step 42 of the auxiliary locking plate 4, the main locking plate 3 and the door opening driving plate 5 also overcome the acting force of the main spring 30 to move to the right synchronously until the lower arc 22 of the locking body contacts the power-assisted protrusion 41, at this time, the resistance of the module of the main locking plate 3 is converted into power assistance, and reacts on the locking body 2 to rotate towards the door closing direction, so as to assist the door closing and realize the door closing suction effect. In the process, when the locking body 2 rotates, the auxiliary boss 23 is matched with the driving groove 61, so that the door closing connecting plate 6 can be driven to move leftwards, the door closing connecting plate 6 drives the switch operating plate 7 to move towards one side of the compression operating plate spring 70 through the stepped chute 62, the signal switch 81 enters the operating plate pit 71, and the action of the signal switch 81 is realized. Until the closed door state of fig. 7 is assumed, the locking body 2 is held in the closed door state by the main spring 30. Referring to fig. 8, in the door-closed state, the operation panel recess 71 of the switch operation panel 7 drives the signal switch 81 to close, and outputs a door-closing signal.

When the door is closed, the locking body 2 exerts a force to the auxiliary locking plate 4 in a rightward and upward direction, and the auxiliary locking plate 4 is tightly attached to the upper end. After the turning point, the auxiliary locking plate 4 comes to the lower part of the locking body 2, at this time, the auxiliary locking plate 4 is acted by a downward leftward acting force under the action of the main spring 30, the auxiliary locking plate 4 is attached to the shell 1 downward, and the auxiliary locking plate 4 is in contact with the shell 1 up and down with a gap, so that impact and impact are generated in the process from the attachment of the upper end to the attachment of the lower end, and a user is reminded of closing the door lock.

In addition, the international washing machine requires that the door be closed accidentally when unlocked, and must be pushed open from the inside against the door lock. Similarly, when the auxiliary locking plate 4 is not locked, the door hook 100 is pulled strongly, the lower arc surface 22 of the locking body 2 overcomes the acting force of the main spring 30 and the like until the upper arc surface 21 of the locking body contacts, and the force of the main spring 30 counteracts the force to open the door, so that the door is pulled strongly.

C. Locked state

Referring to fig. 9, the electromagnetic door-locking mechanism 82 is actuated, and the lock catch 821 is extended to prevent the auxiliary lock plate 4 from moving, so that the door cannot be opened even if it is strongly pulled.

D. Electric door opening action:

referring to fig. 10, the door-locking electromagnetic mechanism 82 is in a reset state, at this time, the door-opening electromagnetic mechanism 83 is powered on, the electromagnetic force pulls the door-opening driving plate 5, the boss 51 of the door-opening driving plate 5 leaves the step 42 of the auxiliary locking plate 4, the auxiliary locking plate 4 loses support, and moves to the right under the action of the locking body torsion spring 20 until the locking body 2 is completely released, as shown in fig. 11. When the locking body 2 is completely released, the door opening state of fig. 2 to 4 is returned, and the door opening is completed.

E. Electric door opening action after door cover is continuously pressed in closed state

Referring to fig. 12 to 14, in the closed state, the door cover is continuously pressed, the door hook 100 controls the locking body 2 to rotate, and simultaneously drives the door closing connecting plate 6 to move, and then drives the switch operating plate 7 to move through the stepped chute 62, the signal switch 81 leaves the operating plate recess 71 of the switch operating plate 7, and the signal switch 81 is OFF. When the system receives the OFF signal, it is considered that there is a pressing operation, and after the pressing operation is cancelled, the door cover is reset by the lock body torsion spring 20, and at this time, the switch operation plate 7 is restored to the state of fig. 7 and 8, and the signal switch 81 is turned ON. When the system determines that there is a pressing operation, the automatic door opening electromagnetic mechanism 83 is controlled to operate, and then an electric door opening operation is performed (the same principle as the above-described d-electric door opening operation).

When the door is closed, whether the door is opened or closed is determined by the opening/closing of the signal switch 81 in fig. 15, and fig. 15 also includes a door-locking electromagnet of the door-locking electromagnetic mechanism 82 and a door-opening electromagnet of the door-opening electromagnetic mechanism 83. The door locking electromagnet of the door locking electromagnetic mechanism 82 is linked with the signal switch 81, and when the door lock is locked by energization, the signal switch 81 is closed, and when the door lock is not locked, the signal switch 81 is opened. When the door opening electromagnet of the door opening electromagnetic mechanism 83 is energized, that is, the door is electrically opened, and the signal switch 81 is turned off after the door is opened.

The above embodiments are illustrative of the present invention, and are not intended to limit the present invention, and any simple modifications of the present invention are within the scope of the present invention.

Claims (10)

1. An electromagnetic door lock, includes casing (1), set locking body (2) of locking body torsional spring (20), rotatable the installing in casing (1) of locking body (2), have lockhole (10) that can supply door hook (100) to insert on casing (1), characterized by: still including set lockplate subassembly, the connecting plate of closing the door (6), switch operation board (7) and the electromagnetic drive module (8) of main spring (30), lockplate subassembly movable mounting is in casing (1), and set up in one side of the locking body (2) and the linkage thereof, the locking body (2) are through closing door connecting plate (6) and switch operation board (7) linkage, be equipped with signal switch (81) on electromagnetic drive module (8), be equipped with the trigger structure on switch operation board (7), trigger structure and signal switch (81) cooperation are used for control the switching of electromagnetic drive module (8) output signal of opening the door.

2. An electromagnetic door lock as claimed in claim 1, wherein: the trigger structure is an operation panel pit (71), the operation panel pit (71) is arranged on one side, facing the electromagnetic drive module (8), of the switch operation panel (7), and the switch operation panel (7) controls the signal switch (81) to act through the operation panel pit (71) to switch on and off of the door opening signal output by the electromagnetic drive module (8).

3. An electromagnetic door lock as claimed in claim 1, wherein: the locking plate assembly comprises a main locking plate (3), an auxiliary locking plate (4) and a door opening driving plate (5), the auxiliary locking plate (4) is movably arranged in the main locking plate (3) through an auxiliary spring (40), an assistance conversion bulge (200) is arranged on the locking body (2), and when the auxiliary locking plate (4) abuts against the lower side surface of the assistance conversion bulge (200), an assistance of assisting door closing is applied to the locking body (2); the door opening driving plate (5) is linked with the auxiliary locking plate (4) and is used for applying acting force for preventing the auxiliary locking plate (4) from moving.

4. An electromagnetic door lock as claimed in claim 3, wherein: locking body (2) are equipped with helping hand conversion arch (200) towards one side of supplementary lockplate (4), the up end of helping hand conversion arch (200) has cambered surface (21) on the locking body, and the lower extreme face has cambered surface (22) under the locking body, when supplementary lockplate (4) and locking body go up cambered surface (21) counterbalance and lean on, exert a resistance that prevents its rotation to close the door to the locking body (2), when supplementary lockplate (4) and locking body cambered surface (22) counterbalance lean on down, exert its helping hand of closing the door of driving to the locking body (2).

5. An electromagnetic door lock as claimed in claim 4, wherein: the door locking mechanism is characterized in that an auxiliary boss (23) is arranged on the locking body (2), the locking body (2) is in linkage with the door closing connecting plate (6) in a matched mode through the auxiliary boss (23), and a driving groove (61) capable of being matched with the auxiliary boss (23) is formed in the door closing connecting plate (6).

6. An electromagnetic door lock as claimed in claim 3, wherein: an auxiliary spring (40) is arranged on the auxiliary locking plate (4), an assistance convex part (41) is arranged at one end, facing the locking body (2), of the auxiliary locking plate (4), and the assistance convex part (41) is abutted against the assistance conversion convex part (200).

7. An electromagnetic door lock as claimed in claim 3, wherein: set on drive plate (5) opens the door and set drive plate spring (50), one side that drive plate spring (50) dorsad goes up in drive plate (5) opens the door has boss (51), be equipped with step (42) with boss (51) looks adaptation on auxiliary locking plate (4), boss (51) and step (42) when leaning on, exert an effort that stops its removal to auxiliary locking plate (4), boss (51) break away from when leaning on to step (42), release the effort that prevents auxiliary locking plate (4) removal.

8. An electromagnetic door lock as claimed in claim 1, wherein: one side of the door closing connecting plate (6) facing the switch operating plate (7) is provided with a step chute (62), one side of the switch operating plate (7) back to the door closing connecting plate (6) is provided with an operating plate spring (70), one side of the step chute (62) is provided with a driving inclined plane, and the door closing connecting plate (6) is driven by the step chute (62) to move the switch operating plate (7).

9. An electromagnetic door lock according to claim 1, characterized in that: the electromagnetic driving module (8) further comprises a door locking electromagnetic mechanism (82), and a telescopic locking clamp (821) is arranged on the door locking electromagnetic mechanism (82) and used for preventing the auxiliary locking plate (4) from moving.

10. An electromagnetic door lock according to claim 1, characterized in that: the electromagnetic driving module (8) further comprises a door opening electromagnetic mechanism (83), wherein the door opening electromagnetic mechanism (83) is used for controlling the action of the door opening driving plate (5), so that the door opening driving plate is separated from the support of the auxiliary locking plate (4), and the acting force for preventing the auxiliary locking plate (4) from moving is removed.

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