Door lock device, electrical equipment and control method

Abstract

The invention relates to a control method for a door lock device, which comprises the following steps: S01, controlling a motor to rotate towards a second rotating direction to enable a push rod to extend out, and enabling a door to move towards a preset position; s02, when the motor drives the door to move to a preset position, the door is opened by a section of gap and kept for a first preset time; s03, after the first preset time is over, the motor is controlled to rotate in the first rotating direction to enable the push rod to retract, and the door moves towards the closing position; s04, in the process that the door moves towards the closing position, whether an obstacle exists in the gap or not is judged, if yes, the motor is controlled to rotate towards the second rotating direction for a second period of preset time, and the step S04 is repeated till the obstacle is removed from the gap; if there is no obstacle, the control motor continues to rotate in the first rotational direction such that the door is in a closed position. According to the control method, the dishwasher can be prevented from clamping obstacles in the automatic door closing process, such as the hands of a user stretching into the dishwasher by mistake.

Description

Technical Field

[0001] The present application relates to a door lock device of an electrical device, the electrical device and a control method, and in particular to a door lock device capable of automatically opening and closing a door of the electrical device, an electrical device having the door lock device and a control method for controlling the automatic opening and closing of the door. Background Art

[0002] Doors of electrical appliances such as dishwashers are usually equipped with door locks. Traditional door locks can be unlocked by physically pulling them, or locked by physically pushing them, that is, the door can be unlocked by manually pulling the latch on the door, or the door can be locked by manually colliding the door hook with the door hook hole. Summary of the invention

[0003] After the dishwasher completes the washing operation, it usually needs to be dried. At this time, the user hopes that the door can be in a partially open state, for example, leaving a gap sufficient for ventilation so that hot steam can be discharged from the inner cavity of the dishwasher, thereby speeding up the drying operation. During the drying operation, the user generally does not wait next to the dishwasher for the drying operation to be completed.

[0004] Therefore, a door lock device can be arranged on the door hook side of the dishwasher opposite to the door, and the door lock device includes a door lock device, a driving device and a control device, wherein the door lock device has a door lock slider, and the door lock slider is provided with a door hook hole that cooperates with the door hook. The control device controls the door lock slider to push out a certain distance and retract, so as to control the opening and closing of the door within a certain opening range, thereby realizing automatic opening of the door to the heat dissipation position and automatic closing from the heat dissipation position.

[0005] Specifically, if the door needs to be opened to a certain gap, for example, to place the door in a heat dissipation position, the door lock slider can be kept in the extended position by the cooperation of the biasing device and the door lock slider provided in the door lock device. When the door gap is to be closed, the biasing force of the biasing device is overcome by the motor drive in the driving device, and the door lock slider is driven from the extended position to the retracted position, at which time the biasing device stores the bias potential energy; when the door gap is to be opened again, the motor rotates in the opposite direction, so that it can gradually release the pulling force on the biasing device, so that the biasing device can bring the door lock slider back from the retracted position to the extended position under the action of the stored bias potential energy, thereby pushing the door open a certain distance.

[0006] When the dishwasher is in the process of cooling and closing the door, the control device will start the automatic door closing program and drive the motor to pull the door lock slider from the extended position to the retracted position. If there is a foreign object or obstacle in the door gap at this time, such as the user accidentally puts his hand in the door gap, the door may be caught in the obstacle during the closing process and cannot be closed normally.

[0007] In addition, during the heat dissipation program of the dishwasher, if the user manually intervenes and opens the door, the door hook of the door will be disengaged from the door lock slider, causing the door lock slider to protrude isolatedly and be exposed outside the dishwasher; if the user manually intervenes and pushes the door to the closed position, although the door lock slider will move to the retracted position under the thrust of the door, since the door lock slider and the driving component are connected by a flexible rope, the rope blocks the thrust on the door lock slider from the driving component, and the motor and the driving rack of the driving component still remain at the position corresponding to the protruding position of the door lock slider without resetting, thus affecting the subsequent automatic door opening operation.

[0008] Therefore, a door lock device for a dishwasher and its control method are needed, such that no matter what position the door of the dishwasher is in, as long as the presence of an obstacle is detected during the closing process of the door, the door closing can be stopped or the door can be moved in the opening direction. At the same time, a door lock device for a dishwasher and its control method are needed, such that during the heat dissipation program of the dishwasher, even if the user manually intervenes to open or close the door, there is a control program to deal with the user's manual intervention, the (heat dissipation) program of the dishwasher runs normally without being affected, and the door lock slider will not be isolatedly exposed outside the dishwasher, or the driving motor does not reset the driving rack, thus affecting the next automatic door opening operation.

[0009] Therefore, according to the first aspect of the present application, a control method is provided for controlling a motor of a door lock device, the motor being used to drive the movement of a push rod, the push rod being used to actuate the door of an electrical appliance, characterized in that the control method includes: S01, when the door is in a non-closed position, controlling the motor to rotate in a first rotation direction, so as to retract the push rod and move the door towards the closed position; S02, during the process of the door moving towards the closed position, determining whether there is an obstacle in the gap of the door; if there is an obstacle in the gap, controlling the motor to rotate in a second rotation direction opposite to the first rotation direction for a first predetermined time, and after the end of the first predetermined time, controlling the motor to rotate in the first rotation direction; repeating the foregoing operations of step S02 until the obstacle is removed from the gap; and S03, moving the door to the closed position.

[0010] According to the first aspect of the present application, it is characterized in that: in step S01, if there is manual intervention, the following steps are performed: S01-1, if the manual intervention is to open the door manually, the push rod is disconnected from the door, and the motor is controlled to rotate in the first rotation direction to retract the push rod; after the door has been in the open position for a period of time, a manual closing operation is performed, and after the manual closing operation is completed, the process proceeds to S03; or S01-2, if the manual intervention is to close the door manually, the motor is controlled to rotate in the first rotation direction, and after the manual closing operation is completed, the process proceeds to S03.

[0011] According to the first aspect of the present application, it is characterized in that: in step S02, whether there is an obstacle in the gap is determined by measuring the current change of the motor.

[0012] According to the first aspect of the present application, it is characterized in that: in step S02, whether there is an obstacle in the gap is determined by measuring the change of infrared signal, photoelectric signal or capacitance signal in the gap.

[0013] According to the first aspect of the present application, it is characterized in that: before step S01, the control method further includes the following steps: S011, close the door and perform a dishwashing operation with the door in the closed position, at this time the push rod is in the retracted position and connected to the door; S012, control the motor to rotate in the second rotation direction, so that the push rod extends, causing the door to move towards a predetermined position; and S013, when the motor drives the door to move to the predetermined position, the push rod is in the extended position and remains connected to the door, the door opens the gap, and remains in the state of opening the gap for a second predetermined time; after the second predetermined time ends, the process proceeds to S01.

[0014] According to the first aspect of the present application, it is characterized in that: the electrical equipment performs a heat dissipation operation within the second predetermined time.

[0015] According to the first aspect of the present application, it is characterized in that: in step S02, if there is no obstacle in the gap or the obstacle has been removed from the gap, control the motor to continue to rotate in the first rotation direction, and the process proceeds to S03.

[0016] According to the first aspect of the present application, it is characterized in that: in step S012, if there is manual intervention, the following steps are performed: S012-1, if the manual intervention is manual door opening, the push rod is disconnected from the door, the motor is controlled to rotate in the first rotation direction, so that the push rod retracts; after the door remains in the open position for a period of time, a manual door closing operation is performed, and after the manual door closing operation is completed, the step proceeds to S03; or S012-2, if the manual intervention is manual door closing, the motor is controlled to rotate in the first rotation direction, and after the manual door closing operation is completed, the step proceeds to S03.

[0017] According to the second aspect of the present application, there is provided a door lock device, the door lock device includes a motor, a push rod, an obstacle detection component, and a control device, the control device is used to control the rotation of the motor, the motor is used to drive the movement of the push rod, the push rod is used to actuate the door of the electrical equipment, and it is characterized in that: the door lock device opens or closes the door according to the control method described in the first aspect of the present application.

[0018] According to the third aspect of the present application, there is provided a door lock device for opening and closing the door of an electrical equipment, and it is characterized in that the door lock device includes: a door lock assembly, a driving assembly, an obstacle detection component, and a control device, the door lock assembly is used to actuate the door, the door lock assembly includes a door lock slider, the door lock slider has an extended position and a retracted position, the driving assembly is drivingly connected to the door lock slider and is used to actuate the door lock slider to reciprocate between the extended position and the retracted position, the obstacle detection component is configured to detect whether there is an obstacle between the gaps when the door is opened, and the control device is used to control the driving assembly based on the detection result of the obstacle detection component; wherein, the control device is configured to when the door lock slider drives the door to move towards the closed position and the obstacle detection component detects that there is an obstacle between the gaps of the door, control the driving assembly, so as to actuate the door lock slider to move towards the extended position, so that the door moves in a direction opposite to the closed position.

[0019] According to the third aspect of the present application, it is characterized in that it further includes: a driving motor, the driving motor is configured to drive the driving assembly, wherein the control device is configured to control the rotation direction of the driving motor, so as to control the movement of the driving assembly.

[0020] According to the third aspect of the present application, it is characterized in that: the obstacle detection component is a current detection component for detecting the current passing through the driving motor.

[0021] According to the third aspect of the present application, it is characterized in that: the obstacle detection component is a photosensitive detection component, an infrared detection component or a capacitance detection component, and is used to detect whether there is an obstacle between the gaps when the door is opened.

[0022] According to the third aspect of the present application, it is characterized in that the door lock assembly further includes: a positioning switch and a door switch. Among them, the control device controls the rotation of the drive motor based on the states of the positioning switch and the door switch. When the door lock slider is in the retracted position, the positioning switch is disconnected, and when the door lock slider is not in the retracted position, the positioning switch is closed. And when the door hook of the door engages with the door lock slider, the door switch is disconnected; and when the door hook of the door disengages from the door lock slider, the door switch is closed.

[0023] According to the third aspect of the present application, it is characterized in that: the door has an open position, a closed position and one or more intermediate positions, and the one or more intermediate positions are located between the open position and the closed position. When the door is in the closed position, the door lock slider is in the retracted position, the positioning switch is disconnected, and the door switch is disconnected; when the door is in the one or more intermediate positions, the door lock slider is in the extended position, the positioning switch is closed, and the door switch is disconnected; and when the door is in the open position, the door lock slider is in the retracted position, the positioning switch is disconnected, and the door switch is closed.

[0024] According to the third aspect of the present application, it is characterized in that the drive assembly includes: a drive gear and a drive rack. The drive gear is configured to be able to rotate in a first rotation direction or a second rotation direction. The drive rack meshes with the drive gear. The drive gear is configured to be able to drive the drive rack to reciprocate in a first linear direction or a second linear direction, and the drive rack is connected to the door lock slider, so as to further drive the door lock slider to move.

[0025] According to the third aspect of the present application, it is characterized in that: the control device is configured to control the rotation direction of the drive gear. When the control device controls the drive gear to rotate in the first rotation direction, the drive rack drives the door lock slider to move in the first linear direction, so that the door lock slider is in the retracted position; when the obstacle detection component detects that there is an obstacle between the gaps when the door is opened, the control device controls the drive gear to rotate in the second rotation direction, so that the door lock slider can move to the extended position along the second linear direction.

[0026] According to a third aspect of the present application, it is characterized in that the door lock assembly further includes: a biasing device configured to store a biasing force in the biasing device when the door lock slider moves in the first linear direction; and when the drive gear rotates in the second rotational direction, the biasing force stored in the biasing device can drive the door lock slider to move in the second linear direction from the retracted position to the extended position.

[0027] According to a third aspect of the present application, it is characterized in that: during the process of the door being controlled to move from the closed position to one or more intermediate positions, the control device drives the drive gear to rotate in the second rotational direction, and the door lock slider moves from the retracted position to the extended position; during the process of the door being controlled to move from one or more intermediate positions to the closed position, the control device drives the drive gear to rotate in the first rotational direction, and the door lock slider moves from the extended position to the retracted position; during the process of the door being manually moved from the closed position to the open position, the control device does not drive the drive gear to rotate, and the door lock slider remains in the retracted position; and during the process of the door being manually moved from one or more intermediate positions to the open position, the control device drives the drive gear to rotate in the first rotational direction, and the door lock slider moves from the extended position to the retracted position.

[0028] According to a third aspect of the present application, it is characterized in that it further includes: a flexible member, and the door lock slider is connected to the drive assembly through the flexible member. Wherein, when the drive gear rotates in the first rotational direction, the drive rack pulls the flexible member, thereby pulling the door lock slider to move in the first linear direction, so that the door lock slider moves to the retracted position; and wherein, when the door lock slider is in the extended position and is pushed towards the retracted position, the flexible member can isolate the thrust generated by the movement of the door lock slider, so that the drive assembly is not affected by the thrust.

[0029] According to a fourth aspect of the present application, there is provided an electrical appliance having a door, characterized in that: the electrical appliance opens or closes the door according to the control method described in the first aspect of the present application.

[0030] According to a fifth aspect of the present application, there is provided an electrical appliance, characterized in that it has a door lock device and a door according to the second and third aspects of the present application.

[0031] Additional aspects and advantages of the present application will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present application. Description of the Drawings

[0032] Figure 1A Schematic diagram of a dishwasher with the door lock device of the present application in the open position;

[0033] Figure 1B For Figure 1A Schematic diagram of the dishwasher shown in the closed position;

[0034] Figure 1C For Figure 1A Schematic diagram of the dishwasher shown in the heat dissipation position;

[0035] Figure 2A Three-dimensional view of the door lock device of the present application;

[0036] Figure 2B For Figure 2A Installation exploded view of the door lock device shown;

[0037] Figure 2C Three-dimensional view of another embodiment of the door lock device of the present application;

[0038] Figure 2D Top view of the door lock slider in the retracted position, with the upper cover of the door lock box hidden to show more components inside the door lock box;

[0039] Figure 2E Top view of the door lock slider in the extended position, with the upper cover of the door lock box hidden to show more components inside the door lock box;

[0040] Figure 3A Internal perspective view of the door lock box, with the upper cover of the door lock box hidden to show more components inside the door lock box;

[0041] Figure 3B For Figure 3A Partial enlarged perspective view of the door lock slider shown;

[0042] Figure 3C For Figure 3A Installation exploded view of the door lock box shown;

[0043] Figure 4A Internal perspective view of the drive assembly, with the upper cover of the drive device of the drive assembly hidden to show more components inside the drive assembly;

[0044] Figure 4B For Figure 4A Installation exploded view of the drive assembly shown;

[0045] Figure 4C Connection and control block diagram of the drive motor;

[0046] Figure 5ASchematic diagram of the door lock slider in the extended position;

[0047] Figure 5B Schematic diagram of the door lock slider in the retracted position;

[0048] Figure 5C Schematic diagram of the door lock slider being forcibly pushed back from the extended position to the retracted position;

[0049] Figure 6A Control logic diagram when the dishwasher door is closed;

[0050] Figure 6B Flowchart of the dishwasher door reset process;

[0051] Figure 6C Flowchart of the dishwasher door starting the dishwashing program and the heat dissipation program after completing the reset;

[0052] Figure 7A Block diagram of the control device, where the obstacle detection component is a current detection component;

[0053] Figure 7B For Figure 7A Circuit diagram of the motor control part in the control device shown;

[0054] Figure 7C For Figure 7A Circuit diagram of the switch signal and door opening operation signal control parts in the control device shown;

[0055] Figure 7D Block diagram of the control device, where the obstacle detection component is an obstacle sensor. Detailed implementation manners

[0056] The following will describe various specific implementation manners of the present application with reference to the accompanying drawings that form a part of this application, but this does not limit the present application. It should be understood that although terms indicating directions, such as "up", "down", "left", "right", "front", and "rear", etc., are used in the present application to describe the orientations of various example structural parts and elements of the present application, these terms are used here only for the convenience of description and are determined based on the example orientations shown in the accompanying drawings. Since the embodiments of the present application can be arranged in different directions, these terms indicating directions are only for illustration and should not be regarded as limitations.

[0057] In this application, terms such as "first", "second", and "third" are only used to distinguish different objects, and do not imply any specific order relationship between these objects. The term "comprising" and its derivatives mean including but not limited to. Unless otherwise specified and defined, the terms "installed", "connected", and "coupled" should be understood in a broad sense. For example, it can be a mechanical connection or an electrical connection, or it can be the internal communication of two components. It can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances. Where possible, the same or similar reference numerals used in this application refer to the same components.

[0058] Figures 1A - 1C Schematic diagrams of the dishwasher 100 having the door lock device 110 of this application at the open position, the closed position, and one or more intermediate positions, such as the heat dissipation position.

[0059] As Figures 1A - 1C shown, the dishwasher 100 has a dishwasher main body 102, a cavity 104 for accommodating tableware, and a dishwasher door 106 for closing the cavity 104. The dishwasher door 106 can pivot around a pivot axis X, thereby realizing the opening and closing of the dishwasher door 106. Therefore, the dishwasher door 106 has three critical positions during movement: the open position, the closed position, and the heat dissipation position, corresponding to the three positions shown respectively Figures 1A - 1C where the heat dissipation position is located between the open position and the closed position. For those of ordinary skill in the art, the dishwasher door 106 can also have any position between the above three positions during movement, such as any position between the heat dissipation position and the closed position, or any position between the heat dissipation position and the open position.

[0060] Continuing as Figures 1A - 1C shown, a door lock device 110 is installed inside the dishwasher main body 102. The door lock device 110 has a door lock slider 112, and the end of the door lock slider 112 has a door hook hole 114. The door lock slider 112 can extend out from the door lock device through hole 107 provided on the dishwasher main body 102, and engage with a door hook 108 (see Figure 2A ) through the door hook hole 114. Therefore, the door lock slider 112 has two critical positions of movement, namely the extended position and the retracted position.

[0061] Inside the dishwasher door 106, there is a door latch which includes the above-mentioned door hook 108. On the outer side of the dishwasher door 106, there is a door latch handle 105 that can pull the door latch, used to disengage the door hook 108 of the door latch from the door hook hole 114, so that the dishwasher door 106 can be pulled open. Corresponding to the position of the door latch on the inner side of the dishwasher door 106, there is a door latch hole 109, enabling the door lock slider 112 to pass through the door latch hole 109 and insert into the door latch, thus engaging with the door hook 108 inside the dishwasher door 106. In the state where the door lock slider 112 is disengaged from the door hook 108, once the dishwasher door 106 or the door hook 108 collides with the door lock slider 112, the door hook 108 can re-engage with the door hook hole 114 of the door lock slider 112, enabling the dishwasher door 106 to close, or enabling the dishwasher door 106 to move driven by the door lock slider 112.

[0062] The dishwasher 100 is also provided with a control device 160 and an obstacle detection component. The control device 160 can be used to control and actuate the movement of the door lock slider 112 and receive obstacle signals. The obstacle detection component can be used to detect whether there are obstacles (such as a user accidentally putting their hand in) between the door gaps 111 during the closing process of the dishwasher door 106 (see Figure 1C ). The obstacle detection component can be a current detection component 445 / 446 (see Figure 4C ), that is, by detecting the current change of the drive motor 226 (see Figures 2A - 2C and 4A - 4C) through the current detection component 445 / 446 to determine whether there are obstacles between the door gaps 111. The obstacle detection component can also be an obstacle sensor 150 arranged between the dishwasher door 106 and the dishwasher main body 102, such as a photoelectric (photosensitive) sensor, an infrared sensor or a capacitance sensor (see Figure 1A ), and determine whether there are obstacles between the door gaps 111 based on the obstacle signal detected by the obstacle sensor 150, and transmit the signal of whether there are obstacles to the control device 160 through the connection line 152.

[0063] When it is detected that there are obstacles between the door gaps 111 during the process of the dishwasher door 106 moving from the heat dissipation position to the closed position under the control of the control device 160, the control device 160 will control the dishwasher door 106 to stop closing or move in the reverse direction, thus avoiding further clamping of the obstacles.

[0064] Figure 1A This is a schematic diagram of the dishwasher door 106 of the present application in the open position.

[0065] As shown in Figure 1AAs shown, when the dishwasher door 106 is in the open position, the door lock slider 112 disengages from the door hook 108. Normally, when the dishwasher 100 is in the open position, the door lock slider 112 does not extend out of the inside of the door lock device through hole 107. Even if the door lock slider 112 is in the extended position, the control device 160 of the dishwasher 100 can control it to retract into the inside of the door lock device through hole 107 (the specific control process will be elaborated in detail later).

[0066] Figure 1B This is a schematic diagram of the dishwasher door 106 of the present application in the closed position.

[0067] As Figure 1B shown, when the dishwasher door 106 is in the closed position, the door lock slider 112 remains engaged with the door hook 108, and the door lock slider 112 is in the retracted position. At this time, the control device 160 of the dishwasher 100 can control the extended distance of the door lock slider 112, thereby opening the dishwasher door 106 and adjusting the size of the opening gap of the dishwasher door 106.

[0068] Figure 1C This is a schematic diagram of the dishwasher door 106 of the present application in the heat dissipation position.

[0069] As Figure 1C shown, when the dishwasher door 106 is in the heat dissipation position, the door lock slider 112 remains engaged with the door hook 108, and the door lock slider 112 is in the extended position. For example Figure 1C as shown in, the door lock slider 112 extends a distance D relative to its retracted position (refer to Figures 2D - 2E ). At this time, the gap of the dishwasher door 106 is opened to the maximum position while remaining engaged with the door lock slider 112, that is, it can be approximately considered that Figure 1C the width of the door gap 111 of the dishwasher in is D. This door gap 111 is used for the dishwasher 100 to perform subsequent drying and heat dissipation operations after completing the cleaning operation. When the dishwasher door 106 is in the heat dissipation position, if the dishwasher door 106 needs to be further opened, the user needs to manually pull the door bolt handle 105 to disengage the door lock slider 112 from the door hook 108, thereby pulling open the dishwasher door 106.

[0070] Figures 1A - 1C The dishwasher 100 shown is only an example. The door lock device 110 of the present application can also be installed on various electrical appliances having a cavity and a door for closing the cavity, such as washing machines, dryers, microwave ovens, etc., and can also be installed on other non-electrical devices.

[0071] Figures 2A - 2C This is a perspective view of two embodiments of the door lock device of the present application.

[0072] Figure 2A This is a perspective view of the door lock device 110 of the present application, showing the main components of the door lock device 110.

[0073] As Figure 2A shown, the door lock device 110 includes a door lock assembly (such as the door lock box 204), a drive assembly 202, and a flexible member (such as a rope 206). The door lock box 204 includes an upper cover 214 and a housing 216 of the door lock box, and a long-shaped door lock slider 112 is disposed inside thereof. The door lock slider 112 can perform a reciprocating linear movement relative to the door lock box 204 in the direction of its length. One end of the door lock slider 112 (the left end shown in the figure) is provided with a door hook hole 114 for receiving and engaging with the door hook 108 installed in the door bolt. The other end of the door lock slider 112 (the right end shown in the figure) is provided with a slider rope receiving hole 242 (see Figure 2B ), for connecting the rope 206. Four door lock box fixing parts 291, 292, 293, 294 are provided on the housing 216 of the door lock box 204 for fixedly installing the door lock box 204 inside the dishwasher main body 102.

[0074] Continuing to refer to Figure 2A , a door switch 260 is further provided inside the dishwasher door 106. The door switch 260 has a door switch contact 262. In the embodiment of the present application, when the door hook hole 114 on the door lock slider 112 is engaged with the door hook 108, the rotary cam (not shown in the figure) of the door hook 108 is in a position contacting the door switch contact 262, so that the door switch 260 is turned off; when the door hook hole 114 on the door lock slider 112 is disengaged from the door hook 108, the rotary cam of the door hook 108 swings to a position where it does not contact the door switch contact 262, so that the door switch 260 is turned on. As is known to those skilled in the art, in other embodiments, the on and off states of the door switch 260 can also be set to a triggering state opposite to that of the above embodiment, as long as it can be ensured that the on and off states of the door switch 260 can distinguish and indicate the engagement or disengagement of the door hook hole 114 and the door hook 108.

[0075] Still referring to Figure 2AThe drive assembly 202 includes a drive device upper cover 222 and a drive device housing 224, and a drive rack 228 is arranged inside the drive rack 228. The drive rack 228 can make reciprocating linear movements relative to the drive assembly 202. One end of the drive rack 228 (the left end shown in the figure) is provided with a rack traction rope receiving hole 244 for connecting the rope 206. The drive assembly 202 also includes a drive motor 226, preferably a servo motor, for driving the drive rack 228 to reciprocate. It can be seen that the door lock slider 112 and the drive rack 228 can be connected together through the rope 206. The rightward movement of the drive rack 228 relative to the drive assembly 202 can drive the door lock slider 112 to move rightward relative to the door lock box 204; the leftward movement of the drive rack 228 relative to the drive assembly 202 can release the pulling force on the door lock slider 112, so that the door lock slider 112 can move to the left, and the leftward movement of the door lock slider 112 is driven by the elastic potential energy stored in the biasing device (coil spring) 132 (see Figures 3A - 3C ).

[0076] Figure 2B for Figure 2A The installation exploded view of the door lock device 110 is shown. Figure 2B In, moved away Figure 2A The door lock box upper cover 214 of the middle door lock box 204 and the drive device upper cover 222 of the drive assembly 202 are shown, so that more components inside the door lock box 204 and the drive assembly 202 can be shown.

[0077] like Figure 2B As shown, the door lock box 204 is provided with a door lock slider 112 inside. From a top view, the door lock slider 112 is provided on the upper part of the door lock box housing 216. A biasing device, preferably a coil spring 232, is provided below the door lock slider 112 and is connected to the door lock slider 112. The coil spring 232 can generate a leftward biasing force on the door lock slider 112 through its own torsion, so that the door lock slider 112 has a tendency to move from the retracted position to the extended position. A latch assembly 218 is also provided at the lower left side of the door lock box 204 and is arranged perpendicular to the door lock slider 112 to lock the door lock slider 112 in the position of the door lock. Figure 2A The door lock box 204 is also provided with a positioning switch 264 for detecting the position of the door lock slider 112, and is used to indicate whether the door lock slider 112 is in the retracted position.

[0078] The drive assembly 202 is also provided with a drive gear 220 which can be meshed with a drive rack 228. The drive motor 226 can actuate the drive gear 220 to rotate, and drive the drive rack 228 to perform reciprocating linear motion through the meshing transmission between the drive gear 220 and the drive rack 228.

[0079] For those of ordinary skill in the art, in some other embodiments, for example, when there is enough space inside the electrical appliance to arrange the door lock device 110, the rope 206 may not be provided, and the door lock slider 112 and the driving rack 228 may be directly arranged in the same moving direction through a rigid connection. Please refer to the following description of Figure 2C .

[0080] Figure 2C FIG. is a perspective view of another embodiment of the door lock device of the present application. Figure 2C In, the upper cover 214 of the door lock box 204 covering the door lock box is hidden, so that the connection relationship between the door lock slider 112 and the driving rack 228 can be seen more clearly.

[0081] As Figure 2C shown, the difference between the door lock device 210 and the Figures 2A - 2B shown door lock device 110 is that the door lock slider 112 and the driving rack 228 are not flexibly connected through the rope 206, but are directly connected together in a rigid manner. At the same time, the biasing device 232 of the door lock device 110 in Figures 2A - 2B is not provided in the door lock device 210. The same parts will not be described again. Since the door lock slider 112 and the driving rack 228 are rigidly connected, the driving rack 228 can be directly actuated by the driving motor 226 to reciprocate, thereby driving the door lock slider 112 to reciprocate between the extended position and the retracted position.

[0082] Figures 2D - 2E respectively show top views of the door lock slider 112 in the retracted position and the extended position in the door lock box 204. Figures 2D - 2E In, the upper cover 214 of the door lock box 204 covering the door lock box is hidden to show the cooperation relationship of the various components inside the door lock box 204, and the moving distances of the door lock slider 112 in the retracted position and the extended position are shown to reflect the clearance distance that the dishwasher door 106 can be opened.

[0083] As Figures 2D - 2E shown, the positioning switch 264 has a positioning switch contact 266. A switch actuating portion 212 protruding downward is provided at the position of the right end of the door lock slider 112 relative to the positioning switch 264. The door lock slider 112 can make a linear reciprocating movement in the door lock box 204. Therefore, the switch actuating portion 212 of the door lock slider 112 also reciprocates as the door lock slider 112 moves.

[0084] Specifically, as Figure 2D shown, when the door lock slider 112 moves to the retracted position, the switch actuating portion 212 of the door lock slider 112 contacts the positioning switch contact 266 of the positioning switch 264, causing the positioning switch 264 to disconnect. At this time, the positioning switch 264 can send a signal to the control device 160 of the electrical appliance (seeFigures 7A - 7D ) Send a signal that the door lock slider 112 is in the retracted position to proceed with the next step of the control program. Similarly, as Figure 2E shown, when the door lock slider 112 leaves the retracted position, for example, moves to the extended position, the switch actuating portion 212 of the door lock slider 112 disengages from the position switch contact 266 of the position switch 264, causing the position switch 264 to close. At this time, the position switch 264 can send a signal that the door lock slider 112 has left the retracted position to the control device 160 of the electrical appliance to proceed with the next step of the control program. For those of ordinary skill in the art, the position switch 264 may not be provided in the door lock box 204. For example, a corresponding mechanical limit structure can be provided in the door lock box 204 to limit the movement of the door lock slider 112, and the movement distance of the door lock slider 112 can be controlled by controlling the rotation speed and rotation duration of the servo motor or the position of the door lock slider 112 can be detected.

[0085] Continue to refer to Figures 2D - 2E , when the door lock slider 112 moves from the retracted position to the extended position, the door lock slider 112 moves a distance D to the left. Without manually pulling the dishwasher door 106, during the process of the door lock slider 112 moving from the retracted position to the extended position, the door hook 108 always remains engaged with the door hook hole 114 of the door lock slider 112, and the dishwasher door 106 also correspondingly moves from the closed position to the heat dissipation position around the pivot axis X, and the distance the door is pushed out is also D, that is, the opening of the door gap 111 is D (see Figure 1C ).

[0086] Continue to refer to Figures 2D - 2E , the detent assembly 218 inside the door lock box 204 includes a detent 208, a detent spring 207, and a linear motor, preferably a detent coil 209. The detent coil 209 has a movable actuating rod 211 for actuating the movement of the detent 208. The detent spring 207 is disposed between the detent 208 and the actuating rod 211 of the detent coil 209 and can provide an elastic force (reset force) for the detent 208 to move away from the detent coil 209. The detent coil 209 can receive a pulse signal from the control device 160 (see Figures 7A - 7D ), thereby providing an electromagnetic force for the detent 208 to move closer to the detent coil 209, and the magnitude of this electromagnetic force can overcome the maximum elastic force generated by the detent spring 207. When the door lock slider 112 is in the retracted position, a detent groove 215 corresponding to the position of the detent 208 is provided below the door lock slider 112 for receiving the insertion of the detent 208. Specifically, as Figure 2DAs shown, at the retracted position of the door lock slider 112, if there is no pulse signal, the detent 208 will automatically insert (spring into) the detent groove 215 under the door lock slider 112 under the action of the detent spring 207, thus completing the locking of the door lock slider 112. When the detent coil 209 receives a pulse signal, an electromagnetic force can be generated to overcome the elastic force of the detent spring 207, thereby pulling the detent 208 back to Figure 2E the unlocked position shown. When the door lock slider 112 moves to other positions except the retracted position, since the detent 208 cannot be aligned with the detent groove 215, the detent 208 cannot be inserted into the detent groove 215 and remains in the withdrawn (unlocked) position. When the detent 208 is not inserted into the detent groove 215, the door lock slider 112 is in a free state and can slide easily.

[0087] Figures 3A - 3C is a schematic structural view of the door lock box 204, where Figure 3A is an internal perspective view of the door lock box 204. The upper cover 214 of the door lock box 204 is hidden in the figure to show more components inside the door lock box 204; Figure 3B is Figure 3A a partial enlarged perspective view of circle A in the door lock slider 112 shown, where Figure 3B part of the material outside the door lock slider 112 is hidden to more clearly show the slider groove 308 and the slider rack 304 of the door lock slider 112, as well as the cooperation relationship between the door lock slider 112 and the torsion spring 232; Figure 3C is Figure 3A an installation exploded view of the door lock box 204 shown to show the installation relationship of the components inside the door lock box 204.

[0088] As Figures 3A - 3B shown, the door lock slider 112 has a slider body 301. On the inner side of the slider body 301, a slider groove 308 is provided along the length direction of the slider body 301 (see Figure 3B ), where a slider rack 304 is provided on one side of the slider groove 308, which has slider rack teeth 305. For those of ordinary skill in the art, slider racks can also be provided on both opposite sides of the slider groove 308.

[0089] Continue to refer to Figures 3A - 3B, inside the door lock box 204, there is also a slider gear 302 installed in the slider groove 308. The upper part of the slider gear 302 is provided with slider gear teeth 306, and the lower part of the slider gear 302 is fixed at the central position of the torsion spring 232. The slider gear 302 and the torsion spring 232 have the same torsion spring rotation axis 314. Therefore, when the slider gear 302 rotates clockwise, it drives the torsion spring 232 to gradually elastically twist outward from the center of the torsion spring, enabling the torsion spring 232 to store elastic potential energy. The slider gear 302 can mesh with the slider rack teeth 305 of the slider rack 304 through the slider gear teeth 306 to form a gear-rack transmission structure. Thus, the rotation of the slider gear 302 around the torsion spring rotation axis 314 can drive the slider rack 304 to move linearly, and the linear movement of the slider rack 304 can also drive the slider gear 302 to rotate around the torsion spring rotation axis 314.

[0090] Continue to refer to Figures 3A - 3B , the torsion spring 232 is formed by curling a continuous metal sheet material. The starting end of the curl, which is the central position of the torsion spring 232, is provided with a slider gear fixing part 322 (see in detail Figure 3C ), for fixedly connecting to the lower end of the slider gear 302. The outer end 316 of the curl of the torsion spring 232 is fixed at the torsion spring fixing part 318 on the door lock box housing 216. When the slider gear 302 rotates, the connection between the lower end of the slider gear 302 and the slider gear fixing part 322 drives the starting end of the torsion spring 232 to curl. Since the end 316 of the curl of the torsion spring 232 is fixed at the torsion spring fixing part 318 of the door lock box housing 216, the whole torsion spring 232 will not rotate, and only torsional deformation occurs inside the torsion spring 232 to store elastic potential energy.

[0091] As Figure 3C shown, the torsion spring 232 is arranged in the torsion spring installation groove 324 of the door lock box housing 216, enabling the torsion spring 232 to twist within the space defined by the torsion spring installation groove 324. The door lock slider 112 is arranged in the sliding groove 312 of the door lock box housing 216, enabling the door lock slider 112 to be accommodated within the sliding groove 312 and linearly move left or right in its length direction. Specifically, the door lock slider 112, the slider gear 302, the torsion spring 232 and the door lock box housing 216 are placed in sequence in the up-down direction, Figure 3C showing the installation relationship of these 4 components in the up-down direction; similarly, the latch coil 209, the latch spring 207 and the latch 208 are placed in sequence in the front-back direction, Figure 3C showing the installation relationship of these 3 components in the front-back direction.

[0092] It should be noted that the acting point where the slider gear 302 drives the door lock slider 112 coincides or substantially coincides with the movement path of the door lock slider 112, and the rotation axis of the slider gear 302 (i.e., the torsion spring rotation axis 314) is provided on the center line in the length direction of the door lock slider 112. Specifically, the acting point where the slider gear teeth 306 of the slider gear 302 mesh with the slider rack teeth 305 of the door lock slider 112 is located inside the slider body 301 of the door lock slider 112. Such an arrangement enables the slider gear 302 to drive the door lock slider 112 to move with the minimum force or torque.

[0093] Figures 4A - 4C Fig. shows the structure and control schematic diagram of the driving assembly 202, where Figure 4A is an enlarged view of the driving assembly 202. The upper cover 222 of the driving device of the driving assembly 202 is hidden in the figure to show more components inside the driving assembly 202; Figure 4B is Figure 4A the installation exploded view of the shown driving assembly 202 to show the installation relationship of the components inside the driving assembly 202; Figure 4C is the connection and control block diagram of the driving motor 226.

[0094] As Figures 4A - 4B shown, the driving assembly 202 includes a driving gear 220, a driving rack 228, a gear transmission member 406, and a driving motor 226. The driving gear 220, the driving rack 228, and the gear transmission member 406 are arranged inside the driving device housing 224 of the driving assembly 202, and the driving motor 226 is partially arranged outside the driving device housing 224. In Figure 4B the driving gear 220 or the driving rack 228, the gear transmission member 406, the driving motor 226, and the driving device housing 224 are placed vertically, Figure 4B showing the vertical assembly relationship of these components.

[0095] Specifically, the driving device housing 224 has a driving gear cavity 422 for accommodating the driving gear 220, so that the driving gear 220 is limited to rotate inside the driving gear cavity 422. The driving device housing 224 also has a driving rack chute 424, so that the driving rack 228 can be accommodated in the driving rack chute 424 and reciprocate linearly in its length direction.

[0096] The drive motor 226 has a drive motor output shaft 408. The drive motor output shaft 408 is cooperatively connected to the drive gear 220 through a gear transmission member 406, so as to drive the rotation of the drive gear 220. The drive gear 220 has external drive gear teeth 416. Drive rack teeth 412 are provided on the upper side of the drive rack 228, and the drive rack teeth 412 can mesh with the external drive gear teeth 416 of the drive gear 220. Thus, the forward and reverse rotations of the drive motor 226 can drive the drive rack 228 to reciprocate within the drive rack chute 424. The drive motor 226 also has positive and negative plugs 434, 436. The positive and negative plugs 434, 436 can be electrically connected to the drive circuit 442 and an external power supply (see Figure 4C ), so as to provide power for the rotation of the drive motor 226 and control the rotation direction of the drive motor 226.

[0097] Specifically, as Figure 4C shown, the positive and negative plugs 434, 436 of the drive motor 226 are connected to the drive circuit 442. In an embodiment of the present application, the drive circuit 442 can be a motor drive module or a relay. The current detection components 445 / 446 are connected to the drive circuit 442 and the control device 160. In an embodiment of the present application, only one of the current detection components 445 / 446 can be retained. For example, only the current detection component 446 is retained, and it is connected to the control device 160 via a connection line 462. The current detection components 445 / 446 include a current detection module and components for amplifying and processing the circuit. The current detection components 445 / 446 can also only include a current detection module. The current detection modules of the current detection components 445 / 446 are respectively connected to the positive or negative pole of the power supply. The control device 160 can generate a motor control signal according to the analog signal received through the current detection component 446, so as to control the drive circuit 442 through the control line 456, and further control the drive motor 226 to rotate or stop, and rotate forward or reverse.

[0098] During the closing process of the dishwasher 100, if an obstacle is encountered, since the closing resistance increases, the current flowing through the drive motor 226 will continuously increase to cope with this resistance. An upper limit threshold of the current can be preset in the control program. This upper limit threshold is larger than the current during the normal working process. Once the current of the motor exceeds this upper limit threshold, the control device 160 can identify that there is an obstacle detected in the door gap 111 of the dishwasher 100 through the current detection components 445 / 446, so as to perform an operation of stopping or reversing the motor to stop the closing operation and eliminate the obstacle.

[0099] The following describes the moving operation process of the door lock slider 112 and the drive rack 228 in combination with Figures 3A - 4B .

[0100] During the process of the door lock slider 112 moving from the retracted position to the extended position, in the starting stage, the control device 160 sends a pulse signal to the latch coil 209, generating an electromagnetic driving force on the latch 208, so that the latch 208 overcomes the elastic force of the latch spring 207 and retracts from the latch slot 215 of the door lock slider 112 to unlock the door lock slider 112. Under the control of the control device 160, the driving motor 128 rotates forward, thereby driving the driving rack 228 to move linearly to the left through the driving gear 220. Since the leftward movement of the driving rack 228 releases the pulling force on the rope 206, the rope 206 no longer pulls the door lock slider 112, and the torsion spring 232 can release its stored elastic potential energy to drive the slider gear 302 to rotate counterclockwise. The counterclockwise rotation of the slider gear 302 drives the door lock slider 112 to move linearly to the left in the chute 312 through the engaged slider rack 304.

[0101] Conversely, during the process of the door lock slider 112 moving from the extended position to the retracted position, under the control of the control device 160, the driving motor 128 rotates in reverse, thereby driving the driving rack 228 to move linearly to the right through the driving gear 220. The linear movement of the driving rack 228 to the right can pull the rope 206, and further pull the door lock slider 112 to move linearly to the right in the chute 312. The linear movement of the door lock slider 112 to the right drives the engaged slider gear 302 to rotate clockwise through the slider rack 304, and the clockwise rotation of the slider gear 302 can drive the torsion spring 232 to twist and store elastic potential energy. When the door lock slider 112 moves to the retracted position, the position of the latch slot 215 is aligned with that of the latch 208, so that the latch 208 can spring into the latch slot 215 under the action of the latch spring 207, thereby locking the door lock slider 112 in the retracted position.

[0102] Figures 5A - 5C The schematic diagram shows the movement of the door lock slider 112 between the extended position and the retracted position, where Figure 5A is the schematic diagram of the door lock slider 112 in the extended position; Figure 5B is the schematic diagram of the door lock slider 112 in the retracted position; Figure 5C is the schematic diagram of the door lock slider 112 being forcibly pushed back from the extended position to the retracted position.

[0103] As Figures 5A - 5C shown, when the dishwasher 100 performs the heat dissipation operation, the dishwasher door 106 is in the heat dissipation position (corresponding Figure 1C state), at this time the door lock slider 112 is in the extended position, and the door hook 108 and the door hook hole 114 of the door lock slider 112 remain engaged (not shown in the figure). After the heat dissipation operation of the dishwasher 100 is completed, the dishwasher door 106 closes, and the control device 160 pulls the door lock slider 112 from Figure 5AThe extended position is moved to Figure 5B the retracted position, at which time the door hook 108 still remains engaged with the door hook hole 114 of the door lock slider 112 (corresponding to Figure 1B the state). If the user forcibly pushes the door when it is in the Figure 5A state, the door lock slider 112 is pushed back to the retracted position by the thrust of the door, rather than being moved to the retracted position under the control of the control device 160. Since the door lock slider 112 and the driving rack 228 are flexibly connected by the rope 206, after the door lock slider 112 is moved to the retracted position, the driving rack 228 still remains at the position corresponding to the extended position of the door lock slider 112 without resetting, as Figure 5C shown. At this time, after the positioning switch 264 detects that the door lock slider 112 is in the retracted position, the control device 160 will control the driving rack 228 to reset to Figure 5B the state. If the user pulls the door bolt handle 105 to open the dishwasher door 106 at the heat dissipation position of the dishwasher door 106 shown in Figure 5A , the door hook 108 will be disengaged from the door hook hole 114 of the door lock slider 112, and the dishwasher door 106 will move to the open position. The control device 160 will then control the driving rack 228 to pull the door lock slider 112 from Figure 5A the extended position to Figure 5B the retracted position. If the user pulls the door bolt handle 105 to open the dishwasher door 106 at the closed position of the dishwasher door 106 shown in Figure 5B , the door hook 108 will be disengaged from the door hook hole 114 of the door lock slider 112, and the door lock device 110 still remains in the Figure 5B state shown (corresponding to Figure 1A the state).

[0104] If the dishwasher 100 accidentally loses power when it is in the Figure 5A state and the control device 160 cannot control the door to close, and the user performs a forced closing operation, the door lock slider 112 will be pushed back to the Figure 5C retracted position shown under the thrust. The latch 208 can be snapped into the latch slot 215 under the action of the latch spring, thereby locking the door lock slider 112 in the retracted position. Since the door lock slider 112 and the driving rack 228 are flexibly connected by the rope 206, when the door lock slider 112 moves to the retracted position, it will not push the driving rack 228 to move, that is, the rightward thrust of the door lock slider 112 will not be transmitted to the drive assembly 202 (the thrust of the door lock slider 112 is isolated by the rope 206), and the positions and states of the rack 228, gear 220, and motor 226 in the drive assembly 202 remain unchanged, thus playing a role in protecting the drive assembly 202.

[0105] The control process of the door lock device 110 will be elaborated in detail later.

[0106] Figures 6A - 6C Shows the control flow chart of the operation of the dishwasher 100. Among them, Figure 6A Is the control logic diagram when the dishwasher door is closed; Figure 6B Shows the flow chart of the reset process of the dishwasher door 106, that is, no matter what state the dishwasher door 106 is in, it is moved to or kept in the closed state; Figure 6C Shows the flow chart of starting the dishwashing program and the heat dissipation program after the dishwasher door 106 is reset.

[0107] As Figure 6A Shown, at steps S01 - S02, when the dishwasher door 106 is in the open position or the middle position (heat dissipation position) and needs to be closed, the control device 160 controls the drive motor 226 to reverse (the direction corresponding to the closing operation), so that the door lock slider 112 moves from the extended position to the retracted position, thereby pulling the dishwasher door 106 back to the closed position. At steps S03 - S04, during the process of pulling back the dishwasher door 106, it is judged whether there is an obstacle in the door gap. If there is an obstacle, the control device 160 controls the drive motor 226 to rotate forward (the direction corresponding to the opening operation) for a predetermined time to ensure that the obstacle can be smoothly removed, and then controls the drive motor 226 to reverse. At steps S05 - S06, it is judged again whether there is an obstacle in the door gap. If there is an obstacle, repeat step S04 until the obstacle is removed from the door gap, and then pull the door back to the closed position.

[0108] Figures 6B - 6C Shows the details of the specific control process.

[0109] As Figure 6B Shown, in step 602, the door of the dishwasher enters the reset operation program, and the control device 160 will detect the pulse states of the door switch 260 and the positioning switch 264 in the next reset operation. Specifically, the door switch 260 and the positioning switch 264 each have two pulse states, namely the low - level state and the high - level state. For example, the low - level state of the door switch 260 and the positioning switch 264 indicates that they are in the closed state, and the high - level state indicates that they are in the open state. Of course, those skilled in the art should know that through reasonable circuit settings, the low - level state of the door switch 260 and the positioning switch 264 can also indicate that they are in the open state, and the high - level state can also indicate that they are in the closed state. After the operation of step 602 is completed, the process goes to step 604.

[0110] In step 604, it is determined whether the door switch 260 is in the off state. If the door switch 260 is in the off state, that is, the door hook hole on the door lock slider 112 and the door hook of the door remain in the engaged state, the process proceeds to step 606; if the door switch 260 is not in the off state, that is, the door hook hole 114 on the door lock slider 112 is disengaged from the door hook 108, the process proceeds to step 608.

[0111] In step 606, it is determined whether the positioning switch 264 is in the off state. If the positioning switch 264 is in the off state, that is, the door lock slider 112 is in the retracted position, the process proceeds to step 612; if the positioning switch 264 is not in the off state, that is, the door lock slider 112 is not in the retracted position, the process proceeds to step 610.

[0112] In step 608, it is determined whether the positioning switch 264 is in the off state. If the positioning switch 264 is in the off state, that is, the door lock slider 112 is in the retracted position, the process proceeds to step 620; if the positioning switch 264 is not in the off state, that is, the door lock slider 112 is not in the retracted position, the process proceeds to step 622.

[0113] In step 610, since the door hook hole 114 on the door lock slider 112 and the door hook 108 remain in the engaged state, and the door lock slider 112 is not in the retracted position, that is, the dishwasher door 106 is pushed open by the door lock slider 112 by a certain gap, the control device 160 starts the automatic door closing program, and drives the motor 226 to reverse to pull the dishwasher door 106 back to the closed position. After the operation of step 610 is completed, the process proceeds to step 632.

[0114] In step 612, since the door hook hole 114 on the door lock slider 112 and the door hook 108 remain in the engaged state, and the door lock slider 112 is in the retracted position, that is, the door is in the closed position, the control program does not perform any operation, and the door lock device does not perform any action. After the operation of step 612 is completed, the process proceeds to step 632.

[0115] In step 620, since the door hook hole 114 on the door lock slider 112 is disengaged from the door hook 108, and the door lock slider 112 is in the retracted position, that is, the door is in the open position (manually opened state) and the door lock slider 112 has been retracted, the control program does not perform any operation, and only issues a prompt signal to the user that the dishwasher door 106 has been opened. After the operation of step 620 is completed, the process proceeds to step 630.

[0116] In step 622, since the door hook hole 114 on the door lock slider 112 is disconnected from the door hook 108, and the door lock slider 112 is in the extended position, that is, the dishwasher door 106 is in the open position (manually opened state) and the door lock slider 112 is not retracted, the control device 160 starts the automatic door closing program and drives the motor 226 to reverse to pull back the door lock slider 112. After the operation of step 622 is completed, the process proceeds to step 630.

[0117] In step 630, since the dishwasher door is still in the open position (manually opened state) and the door hook 108 is disconnected from the door lock slider 112, it is impossible to close the door by driving the door lock slider 112 with the motor 226, and the user needs to perform a manual door closing operation. After the operation of step 630 is completed, the process proceeds to step 632.

[0118] In step 632, the control device 160 completes the reset operation program, the dishwasher door 106 is closed, and the process proceeds to step 634.

[0119] As Figure 6C shown, in step 634, after the dishwasher is reset, the dishwashing program and the heat dissipation program can be started. The dishwashing program can be started by the user clicking the "Start" button on the user interaction panel of the dishwasher or by other intelligent start methods (such as a control program). After the operation of step 634 is completed, the process proceeds to step 636.

[0120] In step 636, the dishwashing program is started and the dishwashing operation begins. After the operation of step 636 is completed, the process proceeds to step 638.

[0121] In step 638, after the dishwashing operation is completed, the automatic heat dissipation program is triggered. After the operation of step 638 is completed, the process proceeds to step 640.

[0122] In step 640, the heat dissipation program starts, and the control device 160 controls the door lock slider 112 to move from the retracted position to the extended position, and the dishwasher door 106 automatically opens. After the operation of step 640 is completed, the process proceeds to step 642.

[0123] In step 642, it is judged whether there is user manual intervention during the automatic opening of the dishwasher door 106. If there is user manual intervention, the process proceeds to step 654; if there is no user manual intervention, the process proceeds to step 644.

[0124] In step 654, it is determined whether the user's manual intervention is to manually open the door or manually close the door. If the user manually opens the door, that is, the door hook hole 114 on the door lock slider 112 is disconnected from the door hook 108, and the door switch 260 changes from the off state to the closed state, the process proceeds to step 658; if the user manually closes the door, the door lock slider 112 is pushed to the retracted position, and the position switch 264 changes from the closed state to the off state, then the process proceeds to step 656.

[0125] In step 656, since the dishwasher door 106 is manually closed by the user, it may indicate that the user does not wish to perform the heat dissipation operation. At this time, the door lock slider 112 is pushed to the retracted position by the thrust of the user manually pushing the door, and the thrust acting on the door lock slider 112 is blocked by the flexible rope 206. Therefore, the position of the driving rack 228 remains unchanged (refer to Figure 5C the state), so the control device 160 needs to start the automatic door closing program, and the driving motor 226 rotates in reverse to pull back the driving rack 228. After the operation of step 656 is completed, the process proceeds to step 670.

[0126] In step 658, since the dishwasher door 106 has been manually opened, and the door lock slider 112 is still in the extended position or in a position between the retracted position and the extended position, the control device 160 starts the automatic door closing program, and the driving motor 226 rotates in reverse to pull back the door lock slider 112. After the operation of step 658 is completed, the process proceeds to step 660.

[0127] In step 660, since the dishwasher door 106 is still in the open state, after the heat dissipation program ends, the user needs to manually close the dishwasher door 106. After the operation of step 660 is completed, the process proceeds to step 670.

[0128] In step 644, in the absence of user manual intervention, the control device 160 controls the door lock slider 112 to move from the retracted position to the extended position, and the dishwasher door 106 automatically opens to the heat dissipation position to complete. After the operation of step 644 is completed, the process proceeds to step 646.

[0129] In step 646, after the dishwasher door 106 automatically opens to the heat dissipation position to complete, the heat dissipation program starts, and the dishwasher starts to dissipate heat. After the operation of step 646 is completed, the process proceeds to step 648.

[0130] In step 648, after the heat dissipation program ends, the automatic door closing program of the dishwasher is triggered. After the operation of step 648 is completed, the process proceeds to step 650.

[0131] In step 650, the control device 160 controls the driving motor 226 to reverse (corresponding to the direction of the door closing operation) to move the door lock slider 112 from the extended position to the retracted position, thereby pulling the dishwasher door 106 back from the heat dissipation position to the closed position. After the operation of step 650 is completed, the process goes to step 652.

[0132] In step 652, it is determined whether there is manual user intervention during the automatic retraction of the dishwasher door 106. If there is manual user intervention, the process goes to step 654 and repeats the above steps; if there is no manual user intervention, the process goes to step 662.

[0133] In step 662, during the process of the dishwasher door 106 automatically pulling back, it is determined whether an obstacle is detected in the door gap 111 of the dishwasher 100. If no obstacle is detected, the process goes to step 668; if an obstacle is detected, the process goes to step 664.

[0134] In step 664, an obstacle is detected in the door gap 111 of the dishwasher 100. To ensure that the obstacle can be removed smoothly, the control device 160 controls the drive motor 226 to rotate forward (corresponding to the direction of the door opening operation) for 0.5 seconds, or to stop for 0.5 seconds. After the operation of step 664 is completed, the process goes to step 666.

[0135] In step 666, the drive motor 226 rotates forward so that the dishwasher door 106 can release a certain amount of space for removing the obstacle. After the operation of step 666 is completed, the process goes to step 650 and repeats the above steps.

[0136] In step 668, it is determined whether the positioning switch 264 is in the off state. If the positioning switch 264 is in the off state, that is, the door lock slider 112 has been pulled back to the retracted position, and the dishwasher door 106 is correspondingly pulled back to the closed position by the door lock slider 112, the process goes to step 670; if the positioning switch 264 is not in the off state, that is, the door lock slider 112 has not been pulled back to the retracted position, and the dishwasher door 106 has not been pulled back to the closed position, the process goes to step 650 and repeats the above steps.

[0137] In step 670, the dishwasher door 106 is pulled back to the closed position by the door lock slider 112, the door closing operation is completed, and the process goes to step 672 to exit the control program and shut down.

[0138] Figures 7A - 7D The block diagram of two embodiments of the control device 160 of the present application shows the specific components and connection relationships of the control device 160. The control device 160 can store and execute the following Figures 6A - 6C The program of the dishwasher control process is shown, and the various parameters required for storing and calling the control process are stored.Figure 7A and 7D The difference between them lies in the different obstacle detection components selectively provided in the door lock device 110, where Figure 7A the obstacle detection component in is a current detection component 445, which can directly detect the current change of the drive motor 226 to determine whether there is an obstacle in the door gap 111; Figure 7B is Figure 7A the circuit diagram of the motor control part in the control device shown; Figure 7C is Figure 7A the circuit diagram of the switch signal and door opening operation signal control parts in the control device shown; Figure 7D the obstacle detection component in is an obstacle sensor 150, such as an infrared sensor, a photoelectric (photosensitive) sensor or a capacitance sensor, which detects whether there is an obstacle in the door gap 111 by detecting the change of infrared signal, photoelectric signal or capacitance signal.

[0139] As Figures 7A - 7D shown, the control device 160 includes a bus 702, a processor 704, a memory 706, an input interface 708 and an output interface 710. The processor 704, the memory 706, the input interface 708 and the output interface 710 are connected to the bus 702. The processor 704 can read a program (or instruction) from the memory 706 and execute the program (or instruction) to process data; the processor 704 can also write data or a program (or instruction) into the memory 706. The memory 706 can store a program (instruction) or data. By executing the instructions in the memory 706, the processor 704 can control the memory 706, the input interface 708 and the output interface 710. In this application, the memory 706 can execute Figures 6A - 6C the dishwasher control program of the process shown in and store the operating parameters required to execute the program.

[0140] The input interface 708 is configured to respectively collect and receive the obstacle signal, user input signal, pulse signal (high or low level state) of the door switch 260 and pulse signal (high or low level state) of the positioning switch 264 fed back by the obstacle detection component (current detection component 446 or obstacle sensor 150) through the connecting lines 462 or 152, 714, 716, 718, and convert these signal data into signals recognizable by the processor 704 and store them in the memory 706.

[0141] The processor 704 is configured to execute a program stored in the memory 706 based on the signals collected above, generate a drive motor 226 control signal or a system prompt signal according to the instructions of the control program, and send the generated signals to the output interface 710. The output interface 710 is configured to receive the motor control signal from the processor 704 and transmit the motor control signal to the drive motor 226 through the control line 456 to control the forward rotation, reverse rotation or stop of the drive motor 226. When the dishwasher 100 performs an automatic door opening operation, the output interface 710 receives the door opening operation signal from the processor 704 and transmits the door opening operation signal to Figures 2D - 2E the latch coil 209 in, causing the latch coil 209 to actuate the latch 208 to move closer to the latch coil 209, thereby retracting from the latch slot 215 of the door lock slider 112 to unlock the door lock slider 112 and release the door lock slider 112 so that it can move towards the extended position. The output interface 710 is also configured to receive the system prompt signal from the processor 704 and transmit the system prompt signal to the user interaction panel of the dishwasher 100 through the connection line 723, and convey a visual signal to the user through the visual screen of the user interaction panel, or convey an audio signal to the user through the sound playback device of the dishwasher user interaction panel, thereby instructing the user to perform corresponding operations.

[0142] Figure 7B and Figure 7C are respectively Figure 7A the specific control circuit diagrams of the input and output parts of the control device 160 shown.

[0143] As Figure 7BAs shown, the drive circuit 442 is a chip for driving the motor 226. In the embodiment of the present application, the chip model adopted is TB67H450. As is known to those skilled in the art, other models of chips on the market can also be used, not limited to the chip model used in this embodiment. In the embodiment of the present application, the drive circuit 442 has eight pins. Among them, pin 1 is the ground pin (GND); pin 2 is the first input pin (IN1), which is connected to the first output 731 of the output interface 710 and is used to receive the control signal; pin 3 is the second input pin (IN2), which is connected to the second output 732 of the output interface 710 and is used to receive the control signal; pin 4 is the motor output current setting pin (VREF), which is used to set the maximum output current (protection current) of the motor; pin 5 is the motor power supply pin (VM), which is used to supply power to the drive motor 226 (such as a +12V power supply); pin 6 is the first output pin (OUT1), which is connected to the positive and negative plug 434 of the motor and is used to control the rotation of the motor; pin 7 is the motor output current detection pin (RS), which is used to detect the output current of the motor (motor sampling current); pin 8 is the second output pin (OUT2), which is connected to the positive and negative plug 436 of the motor and is used to control the rotation of the motor.

[0144] The first output 731 and the second output 732 of the output interface 710 output digital signals, which include a low level state and a high level state. According to the principle of permutation and combination, the first output 731 and the second output 732 can output four different signal combinations, that is, the drive circuit 442 can receive four control signals, namely "low low", "high low", "low high" and "high high". Among them, the "low low" signal is used to control the motor to stop rotating, the "high low" signal is used to control the motor to rotate forward, the "low high" signal is used to control the motor to rotate in reverse, and the "high high" signal is used to control the motor to brake. The signals corresponding to pin 2 (IN1), pin 3 (IN2), pin 6 (OUT1), and pin 8 (OUT2) of the drive circuit 442 and the motor control modes are shown in Table 1 below. In the embodiment of the present application, only three control signals, namely "low low", "high low", and "low high", are used to control the drive motor 226 to stop, rotate forward, and rotate in reverse, respectively.

[0145] IN1 IN2 OUT1 OUT2 Motor control mode L L OFF OFF Stop H L H L Forward rotation L H L H Reverse rotation H H L L Braking

[0146] Table 1

[0147] Continue as Figure 7BAs shown, the current detection component 446 is connected to pin 7 of the drive circuit 442 and includes the illustrated circuit connections and corresponding components. Capacitors C1 and C2 are used for filtering, R3 is a current sampling resistor, and the four resistors R4, R5, R6, and R7 together determine the amplification factor of the operational amplifier U7. Finally, the voltage signal output by the operational amplifier U7 is transmitted to the input interface 708 through the connection line 462. A voltage comparison threshold is stored in the control device 160. When the voltage signal input through the connection line 462 is higher than the voltage comparison threshold, it is determined that there is an obstacle in the door gap, and the control device 160 outputs a "high-low" signal to the drive circuit 442 to control the motor to rotate forward; when the voltage signal input through the connection line 462 is not higher than the voltage comparison threshold, it is determined that there is no obstacle in the door gap, and the control device 160 outputs a "low-high" signal to the drive circuit 442 to control the motor to rotate in reverse.

[0148] As Figure 7C shown, when the door switch 260 is open, the connection line 716 inputs a +5V voltage to the input interface 708; when the door switch 260 is closed, a short circuit is formed, and the connection line 716 inputs a 0V voltage to the input interface 708. Similarly, when the positioning switch 264 is open, the connection line 718 inputs a +5V voltage to the input interface 708; when the positioning switch 264 is closed, a short circuit is formed, and the connection line 718 inputs a 0V voltage to the input interface 708.

[0149] Continuing as Figure 7C shown, the output interface 710 outputs a digital signal through the connection line 722. This digital signal includes a high level state and a low level state. When the connection line 722 outputs a high level, the triode Q1 conducts, the relay switch 734 closes, the latch coil 209 is energized and excited, generating an electromagnetic force to pull the latch 208 back to the Figure 2E shown unlatched position; when the connection line 722 outputs a low level, the triode Q1 does not conduct, the relay switch 734 opens, the latch coil 209 is not energized, and the latch 208 can automatically insert into the latch slot 215 of the door lock slider 112 under the action of the latch spring 207, thereby locking the door lock slider 112.

[0150] The object of the present application is to at least partially solve the above technical problems.

[0151] The door lock device of the present application can at least achieve the following beneficial technical effects:

[0152] First, during the automatic door closing process of the dishwasher, if there is an obstacle in the door gap, such as a user's accidentally inserted hand, the drive motor can stop driving the door lock slider towards the retracted position or actuating the door lock slider towards the extended position, so that the door stops closing or reopens, preventing the obstacle from being further clamped.

[0153] Second, the door lock device of the present application can be connected to the drive device through a flexible rope, enabling a more flexible arrangement of the relative positions of the door lock assembly of the door lock device and the drive device. A reasonable relative position arrangement of the door lock assembly and the drive device can make full use of the narrow space of the electrical equipment, that is, the position arrangement of the drive device is not restricted by the position of the door lock assembly. Through reasonable structural arrangement, the two components of the door lock assembly and the drive device can be respectively installed in two housings of the electrical equipment.

[0154] Third, the door lock assembly of the door lock device of the present application can be connected to the drive device through a flexible rope, and this flexible rope connection can only transmit tensile force and can isolate thrust. If the user forcibly pushes the dishwasher door to the closed position when the dishwasher door is not closed, the thrust generated by the movement of the door lock slider towards the retracted position (closed position) will not be transmitted to the drive device, thus not causing an adverse impact on the motor.

[0155] Fourth, during the heat dissipation program execution of the dishwasher, even if the user manually intervenes to open or close the door, the control system has a corresponding response program to ensure the normal operation of the (heat dissipation) program of the dishwasher without being affected, so that the door lock slider is not isolated and exposed outside the dishwasher, or the drive motor does not reset the drive rack, thus affecting the next automatic door opening operation.

[0156] Fifth, in the door lock device of the present application, the rotation axis of the biasing device passes through the center of the movement path of the door lock slider, making the biasing force of the biasing device on the door lock slider more uniform, and this biasing force will not generate excessive additional torque on the door lock slider. Therefore, the position arrangement of the biasing device in the present application is more reasonable. By generating a smaller biasing force, the door lock slider can be driven to move, enabling the equipment door to be reciprocally driven with a smaller force, and having a lower requirement for the magnitude of the elastic force that the biasing device (such as a torsion spring) can provide.

[0157] Although the present application has been described in connection with examples of the embodiments outlined above, various alternative solutions, modifications, variations, improvements, and / or substantially equivalent solutions, whether known or now or soon foreseeable, may be apparent to those of at least ordinary skill in the art. Additionally, the technical effects and / or technical problems described in the present application are exemplary rather than restrictive; thus, the disclosure in the present application may be used to solve other technical problems and have other technical effects and / or may solve other technical problems. Therefore, the examples of the embodiments of the present application as stated above are intended to be illustrative rather than restrictive. Various changes can be made without departing from the spirit or scope of the present application. Therefore, the present application is intended to cover all known or earlier developed alternative solutions, modifications, variations, improvements, and / or substantially equivalent solutions.

Claims

1. A control method for controlling a motor (226) of a door lock device (110), wherein the motor (226) is used to drive a push rod (112) to move, and the push rod (112) is used to actuate a door (106) of an electrical device, characterized in that The control method comprises: S01, when the door (106) is in a non-closed position, controlling the motor (226) to rotate in a first rotation direction, thereby retracting the push rod (112) and moving the door (106) toward a closed position; S02, during the process of the door (106) moving toward the closed position, determining whether there is an obstacle in the gap (111) of the door (106); if there is an obstacle in the gap (111), controlling the motor (226) to rotate in a second rotation direction opposite to the first rotation direction for a first predetermined period of time, and after the first predetermined period of time ends, controlling the motor (226) to rotate in the first rotation direction; repeating the above operation of step S02 until the obstacle is removed from the gap (111); and S03, moving the door (106) to the closed position.

2. The control method according to claim 1, characterized in that: In step S01, if there is manual intervention, the following steps are performed: S01-1, if the manual intervention is manual door opening, the push rod (112) is disconnected from the door (106), and the motor (226) is controlled to rotate in the first rotation direction to retract the push rod (112); after the door (106) remains in the open position for a period of time, a manual door closing operation is performed, and after the manual door closing operation is completed, the step goes to S03; or S01-2, if the manual intervention is manual door closing, control the motor (226) to rotate in the first rotation direction, and after the manual door closing operation is completed, the step goes to S03.

3. The control method according to claim 1, characterized in that: In step S02, whether the obstacle exists in the gap (111) is determined by measuring the current change of the motor (226).

4. The control method according to claim 1, characterized in that: In step S02, whether the obstacle exists in the gap (111) is determined by measuring the change of the infrared signal, the photoelectric signal or the capacitance signal in the gap (111).

5. The control method according to claim 1, characterized in that: Before step S01, the control method further comprises the following steps: S011, closing the door (106), and performing a dishwashing operation with the door (106) in the closed position, at which time the push rod (112) is in a retracted position and connected to the door (106); S012, controlling the motor (226) to rotate in the second rotation direction, thereby extending the push rod (112), so that the door (106) moves toward a predetermined position; and S013, when the motor (226) drives the door (106) to move to the predetermined position, the push rod (112) is in the extended position and remains connected to the door (106), the door (106) opens the gap (111), and maintains the gap (111) open state for a second predetermined time; after the second predetermined time ends, the step goes to S01.

6. The control method according to claim 5, characterized in that: The electrical device performs a heat dissipation operation during the second predetermined time.

7. The control method according to claim 1, characterized in that: In step S02, if the obstacle does not exist in the gap (111) or the obstacle has been removed from the gap (111), the motor (226) is controlled to continue rotating in the first rotation direction, and the step goes to S03.

8. The control method according to claim 5, characterized in that: In step S012, if there is manual intervention, the following steps are performed: S012-1, if the manual intervention is manual door opening, the push rod (112) is disconnected from the door (106), and the motor (226) is controlled to rotate in the first rotation direction to retract the push rod (112); after the door (106) remains in the open position for a period of time, a manual door closing operation is performed, and after the manual door closing operation is completed, the step goes to S03; or S012-2, if the manual intervention is manual door closing, control the motor (226) to rotate in the first rotation direction, and after the manual door closing operation is completed, the step goes to S03.

9. A door lock device (110), comprising a motor (226), a push rod (112), an obstacle detection component, and a control device (160), wherein the control device (160) is used to control the rotation of the motor (226), the motor (226) is used to drive the movement of the push rod (112), and the push rod (112) is used to actuate a door (106) of an electrical device, characterized in that: The door lock device (110) opens or closes the door (106) by a control method according to any one of claims 1 to 8.

10. A door lock device (110), the door lock device (110) being used to open and close a door (106) of an electrical device, characterized in that The door lock device (110) comprises: A door lock assembly (204), the door lock assembly (204) is used to actuate the door (106), the door lock assembly (204) includes a door lock slider (112), the door lock slider (112) has an extended position and a retracted position; A driving assembly (202), the driving assembly (202) being drivingly connected to the door lock slider (112) and used for actuating the door lock slider (112) to reciprocate between the extended position and the retracted position; an obstacle detection component (445, 446, 150), the obstacle detection component (445, 446, 150) being configured to detect whether an obstacle exists between the gaps (111) opened by the door (106); and A control device (160), the control device (160) being used to control the driving component (202) based on the detection result of the obstacle detection component (445, 446, 150); Wherein, the control device (160) is configured to control the drive assembly (202) when the door lock slider (112) drives the door (106) to move toward the closed position and the obstacle detection component (445, 446, 150) detects that an obstacle is located between the gap (111) of the door (106), thereby actuating the door lock slider (112) to move toward the extended position, so that the door (106) moves in a direction opposite to the closed position.

11. The door lock device (110) according to claim 10, characterized in that Also includes: A drive motor (226) is configured to drive the drive assembly (202), wherein the control device (160) is configured to control the rotation direction of the drive motor (226) to control the movement of the drive assembly (202).

12. The door lock device (110) according to claim 11, characterized in that: The obstacle detection component (445, 446, 150) is a current detection component (445, 446) used to detect the current passing through the drive motor (226).

13. The door lock device (110) according to claim 11, characterized in that: The obstacle detection component (445, 446, 150) is a photosensitive detection component, an infrared detection component or a capacitive detection component, and is used to detect whether there is an obstacle between the gaps (111) opened by the door (106).

14. The door lock device (110) according to claim 11, characterized in that The door lock assembly (204) further includes: Position switch (264) and door switch (260), The control device (160) controls the rotation of the drive motor (226) based on the states of the positioning switch (264) and the door switch (260). When the door lock slider (112) is in the retracted position, the positioning switch (264) is disconnected, and when the door lock slider (112) is not in the retracted position, the positioning switch (264) is closed, and When the door hook of the door (106) is engaged with the door lock slider (112), the door switch (260) is disconnected; and when the door hook of the door (106) is disengaged from the door lock slider (112), the door switch (260) is closed.

15. The door lock device (110) according to claim 14, characterized in that: The door (106) has an open position, the closed position, and one or more intermediate positions, and the one or more intermediate positions are located between the open position and the closed position, When the door (106) is in the closed position, the door lock slider (112) is in the retracted position, the positioning switch (264) is disconnected, and the door switch (260) is disconnected; When the door (106) is in the one or more intermediate positions, the door lock slider (112) is in the extended position, the positioning switch (264) is closed, and the door switch (260) is open; and When the door (106) is in the open position, the door lock slider (112) is in the retracted position, the positioning switch (264) is open, and the door switch (260) is closed.

16. The door lock device (110) according to claim 10, characterized in that The driving assembly (202) comprises: a driving gear (220) configured to be rotatable in a first rotation direction or a second rotation direction; and A driving rack (228), wherein the driving rack (228) is meshed with the driving gear (220), and the driving gear (220) is configured to be able to drive the driving rack (228) to reciprocate along a first straight line direction or a second straight line direction, and the driving rack (228) is connected to the door lock slider (112), thereby further driving the door lock slider (112) to move.

17. The door lock device (110) according to claim 16, characterized in that: The control device (160) is configured to control the rotation direction of the driving gear (220), When the control device (160) controls the driving gear (220) to rotate along the first rotation direction, the driving rack (228) drives the door lock slider (112) to move in the first straight line direction, so that the door lock slider (112) is in the retracted position; When the obstacle detection component (445, 446, 150) detects that an obstacle is located between the gaps (111) opened by the door (106), the control device (160) controls the drive gear (220) to rotate along the second rotation direction, thereby enabling the door lock slider (112) to move along the second linear direction to the extended position.

18. The door lock device (110) according to claim 17, characterized in that The door lock assembly (204) further includes: A biasing device (232), wherein the biasing device (232) is configured such that when the door lock slider (112) moves along the first straight direction, the door lock slider (112) causes the biasing device (232) to store a biasing force; and When the driving gear (220) rotates along the second rotation direction, the biasing force stored in the biasing device (232) can drive the door lock slider (112) to move along the second linear direction from the retracted position to the extended position.

19. The door lock device (110) according to claim 18, characterized in that: When the door (106) is controlled to move from the closed position to the one or more intermediate positions, the control device (160) drives the driving gear (220) to rotate along the second rotation direction, and the door lock slider (112) moves from the retracted position to the extended position; When the door (106) is controlled to move from the one or more intermediate positions to the closed position, the control device (160) drives the driving gear (220) to rotate along the first rotation direction, and the door lock slider (112) moves from the extended position to the retracted position; When the door (106) is manually moved from the closed position to the open position, the control device (160) does not drive the driving gear (220) to rotate, and the door lock slider (112) remains in the retracted position; as well as When the door (106) is manually moved from the one or more intermediate positions to the open position, the control device (160) drives the drive gear (220) to rotate along the first rotation direction, and the door lock slider (112) moves from the extended position to the retracted position.

20. The door lock device (110) according to claim 16, characterized in that Also includes: A flexible component (206), wherein the door lock slider (112) is connected to the drive assembly (202) via the flexible component (206). When the driving gear (220) rotates along the first rotation direction, the driving rack (228) pulls the flexible component (206), thereby pulling the door lock slider (112) to move in the first straight line direction, so that the door lock slider (112) moves to the retracted position; and When the door lock slider (112) is in the extended position, the door lock slider (112) is pushed toward the retracted position, and the flexible component (206) can isolate the thrust generated by the movement of the door lock slider (112), so that the drive component (202) is not affected by the thrust.

21. An electrical device (100) having a door (106), characterized in that: The electrical device (100) opens or closes the door (106) by the control method according to any one of claims 1 to 8.

22. An electrical device (100), characterized in that A door locking device (110) and a door (106) as claimed in any one of claims 9 to 20.

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