Door opening mechanism and electrical equipment

Abstract

The utility model discloses a door opening mechanism and electrical equipment, the door opening mechanism is mounted on an equipment body, and the door opening mechanism comprises a driving device mounted on the equipment body; the door opening piece is in power coupling with the driving device so as to be driven by the driving device to do reciprocating motion between a recovery position and an ejection position; the first coupling piece is arranged on the door opening piece and extends in the movement direction of the door opening piece; the second coupling piece is arranged on one side of the door opening piece and is coupled with the first coupling piece; and the controller is electrically connected with the driving device and the second coupling piece and is used for receiving the position information of the first coupling piece detected by the second coupling piece.

Description

Technical Field

[0001] This application belongs to the field of electrical equipment technology, and in particular relates to a door opening mechanism and electrical equipment. Background Technology

[0002] To improve ease of use, electrical appliances such as refrigerators are equipped with door opening mechanisms to enable automatic door opening. However, the existing technologies can only achieve a fixed opening angle for the door, and cannot control the size of the opening angle, which makes it difficult to meet the user's needs. Utility Model Content

[0003] This application aims to address at least one of the technical problems existing in the prior art. To this end, this application proposes a door opening mechanism and electrical device that can control the opening angle of the door according to user needs, thereby improving the user experience and reducing energy consumption.

[0004] Firstly, this application provides a door opening mechanism, installed on the device body. The door opening mechanism includes:

[0005] The drive unit is installed on the main body of the equipment;

[0006] The door opening component is dynamically coupled to the drive unit to reciprocate between the retracted position and the ejected position under the drive of the drive unit;

[0007] The first coupling element is disposed on the door opening element and extends along the direction of movement of the door opening element;

[0008] The second coupling element is located on one side of the door opening element and is coupled to the first coupling element;

[0009] The controller is electrically connected to the drive unit and the second coupling element, and receives position information of the first coupling element detected by the second coupling element.

[0010] According to the door opening mechanism of this application, the drive device drives the door opening component to reciprocate to drive the door to open automatically. By setting the first coupling component and the second coupling component, the extension length of the door opening component is determined, and then the opening angle of the door is determined, thereby achieving accurate control of the door opening angle, enhancing the user experience, and reducing energy consumption and improving energy utilization.

[0011] According to one embodiment of this application, the first coupling element is a magnetic strip, and the second coupling element is a magnetic coupling sensor.

[0012] According to one embodiment of this application, the driving device includes a power wheel rotatably mounted on the equipment body, and the door opening component is provided with a rack portion that meshes with the power wheel;

[0013] The rack and the magnetic strip are located on different sides of the door opening component.

[0014] According to one embodiment of this application, the driving device includes:

[0015] The motor is installed on the main body of the equipment;

[0016] The first transmission wheel is rotatably mounted on the equipment body, and the first transmission wheel is coupled to the output end of the motor through a gear set;

[0017] The second transmission wheel is coaxially connected to the power wheel and meshes with the first transmission wheel.

[0018] During the process of the door opening component moving from the retraction position to the ejection position, the speed ratio between the first drive wheel and the second drive wheel tends to decrease.

[0019] According to one embodiment of this application, both the first transmission wheel and the second transmission wheel are eccentrically arranged.

[0020] According to one embodiment of this application, the door opening mechanism further includes a trigger switch and a trigger element. The trigger switch is electrically connected to the controller, and the trigger element is movably mounted on the device body under the drive of the power wheel.

[0021] Specifically, the triggering element activates the trigger switch when the door opening element is in the retracted or ejected position; the triggering element deactivates the trigger switch as the door opening element moves between the retracted and ejected positions driven by the power element.

[0022] According to one embodiment of this application, the power wheel includes a gear portion, a cam portion, and two recessed portions arranged circumferentially. The two recessed portions are respectively disposed between the two ends of the cam portion and the gear portion, and the gear portion meshes with the rack portion.

[0023] The trigger engages with the groove when the door opening component is in the retracted or ejected position; the trigger engages with the cam component as the door opening component moves between the retracted and ejected positions driven by the power component.

[0024] According to one embodiment of this application, the door opening mechanism further includes:

[0025] The elastic element, connected between the device body and the trigger element, is used to apply a force to the trigger element to drive it into contact with the drive wheel.

[0026] According to one embodiment of this application, the controller includes a control board, and a trigger switch is integrated on the control board.

[0027] Secondly, this application provides an electrical device. The electrical device includes:

[0028] The equipment body includes a housing and a door, with the door covering the housing;

[0029] The door opening mechanism of any of the technical solutions in the first aspect is installed on the box or door, and the door opening component drives the door to open relative to the box during the process of moving from the recycling position to the ejection position.

[0030] The beneficial effects of the electrical equipment provided in the second aspect of this application are the same as those of the door opening mechanism provided in the first aspect, and will not be repeated here.

[0031] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0032] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0033] Figure 1 This is a schematic diagram of the door opening mechanism provided in the embodiments of this application;

[0034] Figure 2 This is a partial structural schematic diagram of the door opening mechanism provided in an embodiment of this application;

[0035] Figure 3 This is a schematic diagram showing the cooperation of the door opening component, the first coupling component, and the second coupling component provided in the embodiments of this application;

[0036] Figure 4 This is another partial structural schematic diagram of the door opening mechanism provided in the embodiments of this application;

[0037] Figure 5 This is another partial structural schematic diagram of the door opening mechanism provided in the embodiments of this application;

[0038] Figure 6 This is another partial structural schematic diagram of the door opening mechanism provided in the embodiments of this application;

[0039] Figure 7 This is another partial structural schematic diagram of the door opening mechanism provided in the embodiments of this application;

[0040] Figure 8 This is a partial structural schematic diagram of the electrical equipment provided in the embodiments of this application.

[0041] Figure label:

[0042] 100. Equipment body; 110. Cabinet; 120. Door;

[0043] 200. Door opening mechanism; 210. Drive unit; 211. Power wheel; 2111. Gear section; 2112. First anti-foolproof part; 2113. Cam section; 2114. Groove section; 212. Motor; 213. Gear set; 214. First transmission wheel; 215. Second transmission wheel; 220. Door opening component; 221. Rack section; 222. Second anti-foolproof part; 230. First coupling component; 240. Second coupling component; 250. Control board; 260. Trigger switch; 270. Trigger component; 280. Elastic component; 290. Housing. Detailed Implementation

[0044] The embodiments of this application are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0045] The following is for reference. Figures 1-8 This application describes a door opening mechanism and electrical device according to embodiments thereof.

[0046] Please see Figures 1 to 3 This application provides a door opening mechanism 200, which is installed on the device body 100 and is used to realize the function of automatically opening the door body 120.

[0047] The door opening mechanism 200 includes a drive unit 210, a door opening component 220, a first coupling component 230, a second coupling component 240, and a controller.

[0048] The drive unit 210 is installed on the equipment body 100; the door opening member 220 is poweredly coupled to the drive unit 210 to reciprocate between the retraction position and the ejection position under the drive of the drive unit 210; the first coupling member 230 is disposed on the door opening member 220 and extends along the movement direction of the door opening member 220; the second coupling member 240 is disposed on one side of the door opening member 220 and coupled to the first coupling member 230; the controller is electrically connected to the drive unit 210 and the second coupling member 240, and receives the position information of the first coupling member 230 detected by the second coupling member 240.

[0049] The drive unit 210 is installed in a suitable position on the equipment body 100 to ensure that its power output can be effectively transmitted without affecting the normal layout and operation of other components inside the equipment body 100. The drive unit 210 provides the driving force for the door opening mechanism 200.

[0050] The door opening component 220 and the drive device 210 are powered by a suitable mechanical connection, such as a connecting rod, gear set 213, or drive belt. This allows the door opening component 220 to smoothly reciprocate between the retracted position (the position of the door opening component 220 when the refrigerator door is closed, at which point the door opening component 220 is basically retracted into the device body 100, without affecting the appearance and sealing of the refrigerator) and the extended position (the farthest position reached by the door opening component 220 when the refrigerator door is fully open) under the drive of the drive device 210. The door opening component 220 can be a long strip of metal or high-strength plastic component, which applies a force to the door body 120 during its movement, driving the door body 120 to open.

[0051] The first coupling member 230 extends precisely along the movement direction of the door opening member 220 to ensure the accuracy of the position information. The second coupling member 240 is a corresponding sensor, installed on one side of the movement path of the door opening member 220, and maintaining a close sensing distance from the first coupling member 230. The second coupling member 240 can be electrically connected to the controller via a wire to transmit the detected data in real time.

[0052] On the one hand, the controller is connected to the drive device 210 through the control circuit, which can accurately control the start, stop, speed and direction of the drive device 210; on the other hand, it receives the position information of the first coupling member 230 detected and transmitted by the second coupling member 240, which serves as the key basis for determining the opening angle of the refrigerator door.

[0053] In actual operation, taking a refrigerator as an example, when a user issues a command to open the refrigerator door, this command can be triggered through various means such as the external touch control panel, remote control via a mobile app, or voice recognition module. The command signal is then transmitted to the controller. Upon receiving the command, the controller immediately activates the drive unit 210. The drive unit 210 operates according to a preset program, causing the door opening component 220 to be pushed outward from its retracted position.

[0054] As the door opener 220 moves, the first coupling member 230 moves synchronously. The second coupling member 240 continuously detects the position information of the first coupling member 230 and converts it into an electrical signal, which is then transmitted to the controller in real time. Based on the received position information, the controller quickly calculates the current opening angle of the door 120 using an internally preset algorithm model. For example, if the second coupling member 240 detects a signal at the beginning of the first coupling member 230, corresponding to the door opener 220 approaching the retracted position, the controller determines that the refrigerator door is nearly closed. When the second coupling member 240 detects a signal at a specific position in the middle of the first coupling member 230, combined with previous calibration data, it can be determined that the door opener 220 extends a certain length, corresponding to the refrigerator door opening at a medium angle, such as 45°. If the second coupling member 240 detects a signal at the end of the first coupling member 230, it indicates that the door opener 220 is approaching or has reached the top position, and the refrigerator door opening angle is larger, close to 90° or reaching the maximum opening angle preset by the user.

[0055] During the opening of the refrigerator door, assuming the user only wants to retrieve the items placed next to the refrigerator door, when the opening action is halfway completed, the second coupling 240 detects the corresponding medium angle information and transmits it to the controller. The controller can immediately adjust the drive device 210 to stop operating, and the refrigerator door stabilizes at that angle. This satisfies the user's need to quickly retrieve items while avoiding the door 120 from being opened too much, which would cause a large amount of hot air to rush in.

[0056] Throughout the entire usage process, the controller can precisely control the opening angle of the refrigerator door, thus optimizing the compressor's operating mode. For example, when the refrigerator door is detected to be open at a small angle, it means that less hot air is entering the refrigerator, resulting in minimal temperature fluctuations. The controller then sends a command to the compressor to maintain a lower power output to compensate for the small amount of lost cooling energy. When the door is opened at a medium angle, the compressor power is appropriately increased. When the door is opened at a large angle, the compressor is prompted to quickly switch to maximum cooling power to ensure that the temperature inside the refrigerator returns to normal as soon as possible. This reduces unnecessary energy consumption, greatly improves energy efficiency, and provides users with a more convenient and energy-saving user experience.

[0057] According to the door opening mechanism 200 provided in the embodiments of this application, the driving device 210 drives the door opening component 220 to reciprocate so as to drive the door body 120 to open automatically. By setting the first coupling component 230 and the second coupling component 240, the extension length of the door opening component 220 is determined, and then the opening angle of the door body 120 is determined, thereby realizing accurate control of the opening angle of the door body 120, enhancing the user experience, and playing a role in reducing energy consumption and improving energy utilization.

[0058] Please see Figure 1 and Figure 2In some embodiments, the door opening mechanism 200 may include a housing 290, which is fixedly installed on the equipment body 100. The drive device 210, door opening component 220, second coupling component 240, etc. of the door opening mechanism 200 can all be installed inside the housing 290. The housing 290 plays the role of protecting the door opening mechanism 200 and improving the integration. When the door opening mechanism 200 is assembled onto the equipment body 100 as an integrated component, the assembly efficiency can be greatly improved.

[0059] When the door opening member 220 is in the retracted position, the door opening member 220 can be completely retracted into the housing 290, or at least partially left outside the housing 290, gradually extending outside the housing 290 during the movement from the retracted position to the ejected position.

[0060] The housing 290 may be provided with a guide groove to guide the movement of the door opening component 220 and a limit groove to limit the movement of the power component, so as to improve the stability of the operation of the door opening component 220 and the power component.

[0061] Please see Figure 2 , Figure 3 and Figure 4 According to some embodiments of this application, the first coupling member 230 can be a magnetic strip, and the second coupling member 240 can be a magnetic coupling sensor.

[0062] The first coupling element 230 can be a magnetic strip tightly fixed along the length of the door opening element 220, having a uniformly distributed magnetic area for subsequent position detection. This magnetic strip extends precisely along the movement direction of the door opening element 220, ensuring the accuracy of the position information. The second coupling element 240 can be a corresponding magnetic coupling sensor, such as a read head, mounted on one side of the door opening element 220's movement path and maintaining a close sensing distance from the first coupling element 230. Typically, a protective cover is provided on the read head to prevent damage from impacts and to ensure stable reception of the magnetic signal. The read head is electrically connected to the controller via wires to transmit the detected data in real time.

[0063] As the door opening mechanism 220 moves, the magnetic strip moves synchronously. The reading head can continuously detect changes in magnetic field strength at different locations on the magnetic strip. Since the magnetic strip extends along the direction of movement of the door opening mechanism 220, different locations correspond to different magnetic field characteristics, and the reading head can accurately capture these changes.

[0064] The first coupling member 230 and the second coupling member 240 may also be in other forms, specifically at least one of the following.

[0065] Firstly, the first coupling element 230 can be a reflective strip, and the second coupling element 240 can be a photoelectric sensor.

[0066] A reflective strip can be mounted as a first coupling element 230 on the door opening component 220, extending along the direction of movement of the door opening component 220. The reflective strip is made of a highly reflective material, capable of reflecting light incident on its surface back at a certain angle. A photoelectric sensor, as a second coupling element 240, is mounted on one side of the door opening component 220. The photoelectric sensor includes a light-emitting element (such as an infrared light-emitting diode) and a receiving element. The light emitted by the light-emitting element shines on the reflective strip. As the door opening component 220 moves, the position of the reflective strip changes, and the angle and distance of the reflected light also change accordingly. The receiving element determines the position of the reflective strip based on the changes in the intensity and angle of the received reflected light, thereby determining the position of the door opening component 220.

[0067] For example, suppose that during the opening of the refrigerator door, the light-emitting element of the photoelectric sensor continuously emits infrared light. When the refrigerator door just begins to open, the door opening component 220 moves the reflective strip a short distance, and the changes in the angle and intensity of the reflected light are captured by the receiving element. As the door opening component 220 moves further, the position of the reflective strip changes continuously, and the changes in the reflected light also vary. By processing these reflected light signals, the controller can accurately determine the opening angle. For example, when the change in reflected light intensity reaches a certain set value, the controller determines that the refrigerator door is open by 30°; when the change reaches another value, it determines that the door is open by 60°, and so on.

[0068] Secondly, the first coupling element 230 can be a resistor track, and the second coupling element 240 can be a potential detection circuit.

[0069] A linear variable resistor track, serving as the first coupling element 230, is installed along the movement path of the door opener 220, with its resistance value varying linearly along the track's length (i.e., the direction of movement of the door opener 220). The door opener 220 is connected to a sliding contact, which slides along the resistor track as the door opener 220 moves. A potential detection circuit, serving as the second coupling element 240, is connected to both ends of the linear potentiometer and the sliding contact. When the sliding contact moves along the resistor track, the voltage detected by the potential detection circuit changes. According to Ohm's law (V=IR), when the current I through the resistor is relatively stable, the voltage V is proportional to the resistance R. The change in the position of the sliding contact causes a change in the resistance value connected to the circuit, thus changing the voltage. By detecting the change in voltage, the position of the sliding contact can be determined, and thus the position of the door opener 220 can be determined.

[0070] For example, when the refrigerator door is closed, the sliding contact is located at one end of the resistor track, and the potential detection circuit detects an initial voltage value (e.g., 0V). When the refrigerator door begins to open, the door opening component 220 moves the sliding contact along the resistor track, and the voltage detected by the potential detection circuit gradually increases. If the door opening angle is set to 45° when the voltage reaches 2V and 60° when the voltage reaches 3V, the controller can precisely control the door opening angle and the compressor's operating mode, among other related operations, based on the detected voltage values.

[0071] Thirdly, the first coupling element 230 can be an encoding tape, and the second coupling element 240 can be a mechanical encoder.

[0072] A mechanical coded tape, 230, is used as the first coupling element and is installed on the door opening component 220, extending along its direction of movement. The surface of the coded tape has a series of holes, slots, or protrusions arranged according to a specific pattern; these coded elements represent different positional information. A mechanical encoder, 240, is located on one side of the coded tape. The mechanical encoder contains multiple contact points or sensors. When the door opening component 220 moves, the coded tape moves accordingly, and the contact points or sensors of the mechanical encoder detect changes in the coded elements on the tape. By reading and analyzing these coded elements, the position of the door opening component 220 can be determined.

[0073] For example, taking a perforated encoder tape as an example, the mechanical encoder has a corresponding photoelectric detection device inside. When the refrigerator door is opened, the encoder tape moves, and the change in the position of the holes is captured by the photoelectric detection device. If the encoding rule of the encoder tape is that every 10 holes represent a 10° change in the door opening angle, then after the mechanical encoder reads a certain number of holes passing through the detection area, it can transmit the information to the controller, informing it of the door opening angle. For example, if it reads 30 holes passing through, the controller knows that the refrigerator door has opened 30°, and thus takes corresponding control measures.

[0074] Please see Figure 2 , Figures 4 to 7 According to some embodiments of this application, the drive device 210 may include a power wheel 211 rotatably mounted on the device body 100, and the door opening member 220 is provided with a rack portion 221 that meshes with the power wheel 211; wherein the rack portion 221 and the magnetic strip are respectively provided on different sides of the door opening member 220.

[0075] The drive device 210 includes a power wheel 211 rotatably mounted on the equipment body 100. The shaft of the power wheel 211 can be installed in the equipment body 100 through bearings and other components by means of a pre-drilled mounting hole, so that the power wheel 211 can rotate flexibly around the shaft.

[0076] The door opener 220 has a rack portion 221 on the side that cooperates with the drive unit 210. The rack portion 221 is composed of multiple teeth evenly arranged and matching the tooth specifications of the drive wheel 211. When the drive wheel 211 starts to rotate, its teeth mesh with the rack portion 221 on the door opener 220 for transmission. For example, when the drive wheel 211 rotates clockwise, the interaction between the teeth and the rack pushes the door opener 220 to move outward in a set direction, thereby realizing the opening action of the refrigerator door; when the drive wheel 211 rotates counterclockwise, it can drive the door opener 220 back to the retracted position.

[0077] It is worth noting that, in order to achieve a reasonable layout of the various functional components and avoid mutual interference, the rack portion 221 and the magnetic strip (first coupling member 230) are respectively located on different sides of the door opening member 220. For example, the rack portion 221 is located on the side of the door opening member 220 closer to the drive wheel 211, that is, on the inner side of the door opening member 220. This ensures tight and accurate meshing with the drive wheel 211, making power transmission more direct and efficient. The magnetic strip is installed on the outer side of the door opening member 220, that is, on the side facing the second coupling member 240 (reading head), so that the reading head can clearly and stably detect changes in the position of the magnetic strip, accurately obtain the movement information of the door opening member 220, and thus accurately determine the opening angle of the refrigerator door. This arrangement not only meets the functional requirements of driving and angle detection, but also makes the structure of the entire door opening mechanism 200 more compact and orderly, ensuring the reliability of system operation.

[0078] Through the structure of the drive device 210 and the ingenious layout of its components, the door opening mechanism 200 can accurately and stably control the opening angle of the refrigerator door in practical applications, bringing users a convenient and efficient user experience, while also better realizing advantages such as reducing energy consumption and optimizing the compressor's working mode.

[0079] Please see Figure 2 and Figure 4 According to some embodiments of this application, the drive device 210 may further include a motor 212, a first transmission wheel 214, and a second transmission wheel 215. The motor 212 is mounted on the device body 100; the first transmission wheel 214 is rotatably mounted on the device body 100 and is coupled to the output end of the motor 212 via a gear set 213; the second transmission wheel 215 is coaxially connected to the power wheel 211 and meshes with the first transmission wheel 214; wherein, during the process of the door opening member 220 moving from the retraction position to the ejection position, the speed ratio between the first transmission wheel 214 and the second transmission wheel 215 tends to decrease.

[0080] The core power source of the drive unit 210 is the motor 212, which is securely mounted on the device body 100, ensuring its operational stability and ease of connection with other components. The motor 212 can be connected to the controller via control lines, receiving control commands from the controller to precisely adjust operating parameters such as speed and direction. The selection of the motor 212 requires comprehensive consideration of factors such as the weight of the refrigerator door and the required opening and closing speeds. Generally, a small DC motor 212 with suitable output torque and flexibly adjustable speed is chosen, thus meeting the power requirements for driving the door 120 while facilitating energy-efficient control.

[0081] The first transmission wheel 214 is rotatably mounted on the device body 100. The first transmission wheel 214 is coupled to the output end of the motor 212 through the gear set 213. Specifically, a small gear is installed on the output shaft of the motor 212. The small gear transmits power to the first transmission wheel 214 through the gear set 213. With this design, on the one hand, the output torque can be increased, so that the power of the motor 212 can be transmitted to the subsequent components more effectively to cope with the large static friction and other resistance that needs to be overcome at the initial opening of the refrigerator door; on the other hand, the gear ratio can be adjusted according to actual needs to achieve precise setting of the initial transmission ratio.

[0082] The second drive wheel 215 is coaxially connected to the power wheel 211. They can be reliably coaxially fixed through a key connection or interference fit, ensuring synchronous rotation during operation. In some examples, the second drive wheel 215 and the power wheel 211 can be integrally formed. The second drive wheel 215 meshes with the first drive wheel 214, allowing the torque output by the motor 212 to be transmitted to the power wheel 211 via the first drive wheel 214 and the second drive wheel 215, thus driving the door opening component 220 to move.

[0083] Throughout the movement of the door opening mechanism 220 from the retracted position to the extended position, it exhibits a unique characteristic in its transmission speed ratio change: the speed ratio between the first transmission wheel 214 and the second transmission wheel 215 tends to decrease. Initially, a larger torque is required to overcome the sealing resistance of the door body 120, hinge friction, and inertia. At this stage, the larger transmission speed ratio (meaning the second transmission wheel 215 and the power wheel 211 rotate at a slower speed relative to the first transmission wheel 214) ensures that the power output from the motor 212, after deceleration and torque amplification, effectively propels the door opening mechanism 220 to begin moving, allowing the refrigerator door to open smoothly. As the door opening mechanism 220 gradually moves outward, the resistance to the refrigerator door gradually decreases, and we desire an appropriate increase in the door opening speed to improve ease of use. At this time, the transmission speed ratio gradually decreases, which means that the rotation speed of the second transmission wheel 215 and the power wheel 211 is faster than that of the first transmission wheel 214. With the rotation speed of the first transmission wheel 214 being constant, the door opening component 220 is driven to push outward at a faster speed, so that the refrigerator door can be opened to the required angle more quickly and smoothly.

[0084] In some examples, during the opening of the refrigerator door, the door opener 220 can remain in contact with the refrigerator door, thereby precisely controlling the opening angle of the door 120 by the extension length of the door opener 220.

[0085] In other examples, the movement trajectory and length of the door opener 220 are restricted so that the refrigerator door remains in contact with the door opener 220 at the initial stage of opening, and separates from the door opener 220 after the refrigerator door reaches a certain angle. The acceleration of the door opener 220 ensures that the refrigerator door has sufficient initial velocity so that the refrigerator door can open at a large angle under the action of inertia. In actual execution, the opening angle of the refrigerator door can be calculated by the stopping position of the door opener 220, the end velocity at the time of stopping, and the deceleration corresponding to the resistance encountered by the refrigerator door in the subsequent movement. Then, the movement stroke of the door opener 220 can be calculated by the required opening angle of the refrigerator door. By controlling the door opener 220 to stop at an appropriate position, the door 120 can be opened to a preset angle.

[0086] This solution can open the door at appropriate speed and force at different stages, and accurately control the opening angle based on the position detection of the door opening component 220 by the front coupling component, providing users with a more comfortable and convenient user experience, while also ensuring the high efficiency and reliability of the entire door opening mechanism 200.

[0087] Through the meticulously designed drive device 210 structure, from the motor 212 to the various transmission wheels, and then to the meshing transmission with the door opening component 220 and the unique transmission speed ratio change trend, this door opening mechanism 200 can accurately control the opening angle of the refrigerator door, meet the needs of diverse usage scenarios, and further demonstrate the advantages of this invention in improving the ease of use and energy saving of electrical appliances.

[0088] Please see Figure 2 and Figure 4 According to some embodiments of this application, both the first transmission wheel 214 and the second transmission wheel 215 can be eccentrically configured.

[0089] By appropriately setting the eccentricity and initial phase angle of the first transmission wheel 214 and the second transmission wheel 215, the rotational speed of the second transmission wheel 215 can be made to increase. By adjusting their initial relative position (phase angle), the second transmission wheel 215 is in a relatively slow starting rotational state during the initial meshing stage, i.e., when the door opening member 220 is in the retracted position. As the gears rotate, the meshing point position changes continuously due to the eccentricity, and through a reasonable eccentricity setting, the rotational radius (equivalent to the effective pitch circle radius) of the second transmission wheel 215 increases as the door opening member 220 moves from the retracted position to the ejected position, thereby increasing the rotational speed of the second transmission wheel 215.

[0090] Please see Figure 2 and Figure 4 In some embodiments, the first transmission wheel 214 and the second transmission wheel 215 can be non-circular gears.

[0091] The pitch curve shape of a non-circular gear determines the variation law of its transmission ratio. When both the first transmission wheel 214 and the second transmission wheel 215 are non-circular gears, the speed of the second transmission wheel 215 can be gradually increased by rationally designing their pitch curve shapes. For example, when both the first transmission wheel 214 and the second transmission wheel 215 are elliptical gears, this can be achieved by rationally designing the ratio of the major axis to the minor axis of the ellipse. In the initial meshing stage, that is, when the door opening member 220 is in the retracted position, meshing begins near the position where its major axis is close to the minor axis of the second transmission wheel 215. As the door opening member 220 moves from the retracted position to the ejected position, because the radius of curvature of the elliptical gear is larger at the major axis and smaller at the minor axis, under the condition of pure rolling of the pitch curve, according to the gear transmission ratio formula (the transmission ratio is equal to the ratio of the radius of curvature of a certain point of the driving gear pitch curve to the radius of curvature of the corresponding meshing point of the driven gear pitch curve), the speed of the second transmission wheel 215 will increase during the process of the door opening member 220 moving from the retracted position to the ejected position.

[0092] In addition to elliptical gears, the first transmission wheel 214 and the second transmission wheel 215 can also be designed with other non-circular gears with special pitch curves. For example, a non-circular gear with a pitch curve similar to a logarithmic spiral can be designed, but details will not be elaborated here.

[0093] In some other examples, the first drive wheel 214 and the second drive wheel 215 can be eccentrically arranged non-circular gears to further increase the maximum speed of the door opening member 220 when it moves to the top position. For specific implementation, please refer to the aforementioned examples, which will not be repeated here.

[0094] Please see Figure 2 and Figure 4 In some embodiments, the first transmission wheel 214 and the second transmission wheel 215 can also be half gears. That is, both the first transmission wheel 214 and the second transmission wheel 215 are incomplete gears. Specifically, when the door opening component 220 is in the retracted position, the meshing start end of the first transmission wheel 214 is provided with a foolproof protrusion, and the meshing start end of the second transmission wheel 215 corresponds to and engages with the foolproof protrusion to improve assembly accuracy and efficiency, and ensure operational stability.

[0095] With the limited travel of the door opening component 220, the rotation angle of the power component is also limited. During the reciprocating motion of the door opening component 220 from the retracted position to the ejected position driven by the power component, the rotation angle of the power component is less than 360°. That is, along the circumference of the first transmission wheel 214 and the second transmission wheel 215, only some teeth will engage. By setting the first transmission wheel 214 and the second transmission wheel 215 as incomplete gears and retaining the teeth that effectively engage, the material of the parts can be reduced, the production cost can be reduced, and the product's lightweight level can be improved.

[0096] Please see Figure 2 , Figures 4 to 7 According to some embodiments of this application, the door opening mechanism 200 may further include a trigger switch 260 and a trigger element 270. The trigger switch 260 is electrically connected to the controller, and the trigger element 270 is movably mounted on the equipment body 100 under the drive of the power wheel 211. The trigger element 270 triggers the trigger switch 260 when the door opening member 220 is in the retracted position or the ejected position. The trigger element 270 de-triggers the trigger switch 260 during the process of the door opening member 220 moving between the retracted position and the ejected position driven by the power member.

[0097] A trigger switch 260 is mounted on the device body 100 and electrically connected to the controller to transmit trigger signals to the controller in a timely manner. The trigger switch 260 can be a mechanical trigger switch 260 or a magnetic induction trigger switch 260, etc., and its specific form is not limited. In one example, the trigger switch 260 is a mechanical trigger switch 260, which is triggered by direct contact or pressing of the trigger element 270, and deactivated by releasing the contact or pressing. The trigger switch 260 can send an induction signal when triggered.

[0098] Driven by the drive wheel 211, the trigger 270 is movably mounted on the device body 100. This movable mounting ensures that it can perform corresponding mechanical actions during the movement of the drive wheel 211 and the connected door opening component 220. For example, the trigger 270 can be slidably or rotatably connected to the device body 100 via a slide rail or hinge, allowing it to move along a predetermined path and maintain a positional correspondence with the trigger end of the trigger switch 260.

[0099] By setting the trigger 270 and the trigger switch 260, the endpoints of the door opening component 220 on its active stroke, namely the retraction position and the ejection position, can be determined more accurately, thereby improving the overall operational stability.

[0100] In actual implementation, please refer to Figures 4 to 7 , Figures 4 to 7 The process of the door opening component 220 moving from the retracted position to the ejected position is demonstrated. In actual operation, after receiving the door opening signal, the door opening mechanism 200 controls the power wheel 211 to rotate, driving the door opening component 220 to move from the retracted position to the ejected position to open the door 120. Simultaneously, the power wheel 211 drives the trigger component 270 to slide to the disengaged position, separating it from the trigger switch 260, which is in the disengaged state. When the door opening component 220 moves to the ejected position, the maximum angle of door 120 opening achieved by the ejection mechanism is realized. At this time, the trigger component 270, driven by the power wheel 211, moves to the trigger position, contacting the trigger switch 260. The trigger component 270 triggers the trigger switch 260 and sends the first sensing signal. After receiving the first sensing signal, the door opening mechanism 200 controls the power component to stop rotating, so that the door opening component 220 stops its ejection action. The door opening mechanism 200 can control the power component to reverse after a preset waiting time (e.g., 0.1s). It should be noted that the duration of this preset time is not limited. Figures 7 to 4Driven by the reverse rotation of the power wheel 211, the door opening component 220 moves from the ejected position to the retracted position. Simultaneously, the power wheel 211 drives the trigger component 270 to the deactivated position, and the trigger switch 260 is in the deactivated state. When the door opening component 220 moves to the retracted position, it retracts into the device body 100, without affecting the normal closing of the door 120. This also prevents the door opening component 220 from interfering with or touching the user when it is in the ejected position, thus avoiding safety hazards. At this time, the trigger component 270 moves to the trigger position under the drive of the power wheel 211. The trigger component 270 triggers the trigger switch 260 and sends a second sensing signal. After receiving the second sensing signal, the door opening mechanism 200 controls the power wheel 211 to stop rotating, so that the door opening component 220 stops its retraction action and completes the door opening action of the door opening mechanism 200 at its maximum opening angle.

[0101] During the entire door opening process, the door opening mechanism 200 controls the power component to rotate after receiving the door opening signal; when it receives the first sensing signal from the trigger switch 260, it controls the power component to stop and the door 120 opens; after waiting for a preset time, it controls the power component to reverse; when it receives the second sensing signal from the trigger switch 260, it controls the power component to stop and the door opening component 220 retracts, completing a maximum angle door opening action.

[0102] It is understandable that when the door opening component 220 stops at a position between the retracted position and the ejected position, that is, when the opening angle of the refrigerator door is not the maximum angle, the power wheel 211 can be reversed to make the door opening component 220 return to the retracted position after the light strip has been set for a preset time (e.g., 0.1s) after the door opening component 220 stops, so as to avoid interfering with or touching the user, and also to facilitate subsequent closing of the door.

[0103] Please see Figures 4 to 7 According to some embodiments of this application, the power wheel 211 may include a gear portion 2111, a cam portion 2113, and two recessed portions 2114 arranged circumferentially. The two recessed portions 2114 are respectively disposed between the two ends of the cam portion 2113 and the gear portion 2111. The gear portion 2111 meshes with the rack portion 221. The trigger member 270 cooperates with the recessed portion 2114 when the door member 220 is in the retracted position or the ejected position. The trigger member 270 cooperates with the cam portion 2113 during the process when the door member 220 is driven by the power member to move between the retracted position and the ejected position.

[0104] The drive wheel 211 can be disc-shaped as a whole, and a gear part 2111, a cam part 2113 and two groove parts 2114 are arranged circumferentially along the rotation axis of the drive wheel 211.

[0105] The gear section 2111 is located on one side of the circumferential area of ​​the drive wheel 211 and matches with the rack section 221 provided on the door opening member 220. The two mesh tightly to achieve effective power transmission. When the drive wheel 211 rotates under the drive of a power source such as the motor 212, the gear section 2111, through its interaction with the rack section 221, pushes the door opening member 220 to reciprocate between the retracted position and the ejected position, thereby driving the refrigerator door to complete the opening and closing operation.

[0106] The cam portion 2113 occupies a certain arc range on the circumference of the drive wheel 211, and its contour shape is designed according to the motion requirements of the trigger 270 and the mechanical and control logic of the entire door opening process. The convex surface of the cam can be a regular circle or a curve, so that when it cooperates with the trigger 270, it can enable the trigger 270 to move according to a preset trajectory and method, thereby realizing the triggering function at different stages.

[0107] Two recessed portions 2114 are respectively located between the two ends of the cam portion 2113 and the gear portion 2111. The shape and size of the recessed portions 2114 are adapted to the corresponding parts of the trigger member 270. Specifically, the depth, width, and circumferential position of the recessed portions 2114 are calculated and determined. They are mainly used to cooperate with the trigger member 270 at specific times to play a role in positioning and triggering related operations. By setting two recessed portions 2114, the trigger member 270 is positioned in the same way when it cooperates with the two recessed portions 2114. Thus, through the design of the control logic, the door opening mechanism 200 can determine the maximum active position of the door opening member 220 by triggering the same trigger switch 260 twice during one door opening action. Setting only one trigger switch 260 simplifies the structure, occupies little space, improves space utilization, and reduces production costs.

[0108] When the refrigerator door is in the initial closed state, that is, when the door opening member 220 is in the retracted position, the initial position of the trigger member 270 on the device body 100 corresponds to and engages with one of the grooves 2114 on the drive wheel 211. At this time, a part of the trigger member 270 is embedded in the groove 2114. This engagement allows the trigger member 270 to trigger the trigger switch 260 connected to it (as mentioned above, the trigger switch 260 is electrically connected to the controller).

[0109] As the drive wheel 211 rotates under the drive of the motor 212, it causes the door opening component 220 to gradually move away from the retraction position, and the trigger component 270 also begins to move under the drive of the drive wheel 211. Due to the rotation of the drive wheel 211, the trigger component 270 disengages from the groove portion 2114 and begins to engage with the cam portion 2113. During this process, the unique curved contour of the cam portion 2113 guides the trigger component 270 to move along a preset trajectory, causing the trigger component 270 to gradually move away from the trigger switch 260, thereby achieving the effect of releasing the trigger switch 260. The change in the state of the trigger switch 260 can be fed back to the controller in real time. Based on this, the controller determines that the door opening component 220 has entered the normal door opening stroke, and then precisely adjusts the rotation speed, direction, and other parameters of the drive wheel 211 according to other components (such as the position information of the door opening component 220 detected by the coupling component), ensuring that the refrigerator door can be opened smoothly according to the user's needs or the preset angle. Throughout the entire process of the door opening component 220 moving until it approaches the ejection position, the trigger component 270 always maintains a working relationship with the cam portion 2113. The shape of the cam portion 2113 ensures the stability of the trigger component 270 during movement and accurate control of the state of the trigger switch 260.

[0110] When the door opening mechanism 220 reaches the top position driven by the drive wheel 211, it means the refrigerator door is fully open. At this time, the trigger 270, as the drive wheel 211 rotates, engages with another groove 2114 on the drive wheel 211. The trigger 270 re-enters this groove 2114, triggering the corresponding trigger switch 260 again. The trigger switch 260 sends a signal to the controller that the refrigerator door is fully open. After receiving this signal, the controller stops the drive wheel 211 from rotating and can also perform corresponding operations according to the actual application scenario, such as adjusting the compressor's working mode (increasing the compressor's cooling power based on the large opening angle of the refrigerator door), or recording relevant data of this door opening operation.

[0111] Similarly, when the door opening component 220 moves from the top position to the retracted position, the drive wheel 211 rotates in the opposite direction. The coordination process between the trigger component 270 and each part of the drive wheel 211 is carried out in the reverse order described above, ensuring that all components of the entire door opening mechanism 200 work in a coordinated and orderly manner, ensuring that the refrigerator door can accurately and stably complete the opening and closing actions, and achieving effective control of the opening angle and good coordination with other functional modules (such as compressor control).

[0112] Please refer to 5. According to some embodiments of this application, the gear part 2111 and the rack part 221 are respectively provided with a first anti-mistake part 2112 and a second anti-mistake part 222 that cooperate with each other.

[0113] Understandably, because the gear section 2111 is not a fully toothed configuration, and the rotation angle of the power component, the moving position of the door opening component 220, and the rotation position of the trigger component 270 correspond to each other, it is necessary to ensure accurate meshing between the gear section 2111 of the power component and the rack section 221 of the door opening component 220 during assembly to ensure the accurate and stable operation of the door opening mechanism 200. By providing a first mis-detection part 2112 and a second mis-detection part 222 that cooperate with each other on the gear section 2111 and the rack section 221 respectively, the first mis-detection part 2112 and the second mis-detection part 222 are connected in a corresponding manner during assembly, thereby improving the accuracy and stability of assembly and increasing production efficiency.

[0114] In one example, the gear portion 2111 is provided with a first anti-misalignment portion 2112, which can be an anti-misalignment protrusion. The anti-misalignment protrusion is connected between two adjacent teeth of the gear portion 2111 and is directly opposite to the rack portion 221. The rack portion 221 can be provided with an anti-misalignment groove. The teeth of the rack portion 221 that mesh with the aforementioned two teeth are provided with anti-misalignment grooves corresponding to the anti-misalignment protrusions. During assembly, the anti-misalignment protrusions and anti-misalignment grooves must be aligned and connected. Without affecting meshing, it is not easy to assemble incorrectly.

[0115] In another example, the location of the anti-mistake protrusion is not limited. An anti-mistake protrusion extending laterally can be provided on the tooth of the gear part 2111 at the end, and an anti-mistake groove can be provided at the corresponding end position of the rack part 221.

[0116] Please see Figure 2 , Figures 4 to 7 According to some embodiments of this application, the door opening mechanism 200 may further include an elastic element 280, which may be connected between the device body 100 and the trigger element 270. The elastic element 280 is used to apply a force to the trigger element 270 to drive the trigger element 270 to contact the power wheel 211.

[0117] Taking the trigger 270 as an example, which is located on the periphery of the drive wheel 211 and slides in the direction of approaching and moving away from the drive wheel 211, the elastic element 280 can be located at the end of the trigger 270 away from the drive wheel 211. The elastic element 280 can be a spring, elastic material, etc.

[0118] When the refrigerator door is in the initial closed state, that is, when the door opener 220 is in the retracted position, the trigger 270, under the elastic force of the elastic member 280, is tightly fitted into the groove 2114 corresponding to the drive wheel 211. This ensures that the trigger 270 can accurately trigger the connected trigger switch 260 and send the correct initial state signal to the controller. At this time, the elastic member 280 is in a certain compressed state, storing corresponding elastic potential energy. The magnitude of the elastic force is just enough to overcome the weight of the trigger 270 itself and other possible minor interference forces, keeping the trigger 270 in a stable trigger position.

[0119] When the drive wheel 211 starts to rotate, driving the door opening member 220 to move from the retracted position to the ejected position, the trigger member 270 gradually disengages from the groove 2114 and engages with the cam 2113 under the drive of the drive wheel 211. During this process, the elastic member 280 extends and retracts accordingly with the movement of the trigger member 270. Although the position of the trigger member 270 changes, the elastic member 280 always applies a spring force pointing towards the drive wheel 211, so that the trigger member 270 can closely follow the contour change of the drive wheel 211. Whether it is sliding in contact with the cam 2113 or engaging with the groove 2114 again when approaching the ejected position, there will be no situation where the triggering function fails due to accidental loosening or disengagement.

[0120] Similarly, during the movement of the door opening member 220 from the ejected position to the retracted position, the elastic member 280 ensures that the trigger member 270 can move in the opposite direction along the contour of the power wheel 211, and re-engage with the corresponding groove 2114 to trigger the switch 260, transmitting the sensing signal that the door opening member 220 has moved to the retracted position to the controller.

[0121] The elastic force of the elastic element 280 effectively compensates for the problem of poor contact between the trigger element 270 and the drive wheel 211 that may be caused by mechanical vibration, component wear or other factors. This further enhances the stability and reliability of the entire door opening mechanism 200, ensuring that the triggering operation of each key node can be executed accurately and without error. This ensures that the opening and closing of the refrigerator door and the control of the opening angle can be achieved precisely and smoothly, providing users with a more reliable user experience.

[0122] Please see Figure 2 , Figures 4 to 7 According to some embodiments of this application, the controller may include a control board 250, and a trigger switch 260 is integrated on the control board 250.

[0123] The control board 250 serves as the hardware carrier of the control system for the entire door opening mechanism 200. It can be a printed circuit board (PCB). The control board 250 is installed in the main body 100 of the equipment (such as a suitable location such as a reserved electrical control compartment inside the refrigerator). Specifically, the control board 250 is fixedly installed inside the housing 290 to ensure that the installation conditions of the control board 250 have good electrical insulation, heat dissipation and stability, so as to ensure its long-term reliable operation.

[0124] The control board 250 integrates numerous electronic components, such as a microprocessor chip, various capacitors, resistors, and interface circuits for implementing different functions. The microprocessor chip, acting as the "brain" of the control board 250, runs a pre-written control program. It receives signals from various sensors (such as the aforementioned read head or other coupling components used to detect the position of the door opening element 220, and performs complex calculations and logical judgments based on these signals). This results in precise control commands being sent to the drive unit 210 (including components such as the motor 212), enabling precise control of the refrigerator door opening angle and coordinated operation with other related functions, such as adjusting the compressor's operating mode according to the door opening angle.

[0125] The trigger switch 260 is integrated onto the control board 250. This integrated design is not simply a physical installation, but rather a rational circuit layout and wiring method that allows it to form an organic whole with other components on the control board 250. The trigger pin of the trigger switch 260 is directly connected to the corresponding input pin of the microprocessor chip on the control board 250 via printed circuits. In this way, when the trigger switch 260 is triggered or detrimentalized by the trigger element 270, its state change can be accurately transmitted to the microprocessor chip in the form of an electrical signal in real time, avoiding signal interference or transmission delays that may be caused by excessively long lines or loose connections.

[0126] Moreover, this integrated design is more efficient in terms of overall space utilization, reducing the need for additional wiring and independent installation space, making the internal structure of the entire door opening mechanism 200 more compact and simple, which helps to reduce the overall size of the equipment, and also facilitates subsequent maintenance and repair work. Maintenance personnel only need to check the relevant circuit connections and component status on the control board 250 to quickly locate and handle faults related to the trigger switch 260.

[0127] Please see Figure 8 This application also provides an electrical device.

[0128] The appliance can be a refrigerator, cabinet, dishwasher, freezer, wine cabinet, etc., and there are no specific limitations.

[0129] The electrical device includes a device body 100 and a door opening mechanism 200 as described in any of the above technical solutions.

[0130] The equipment body 100 includes a housing 110 and a door 120. The door 120 covers the housing 110. The door opening mechanism 200 is installed on the housing 110 or the door 120. The door opening mechanism 220 drives the door 120 to open relative to the housing 110 during the process of moving from the recycling position to the ejection position.

[0131] The door opening mechanism 200 can be installed on the housing 110 or on the door 120.

[0132] In one example, the door opening mechanism 200 is mounted on the housing 110, and the door opening member 220 is directly opposite the door 120. During the process of moving from the retracted position to the ejected position, the door opening member 220 applies a pushing force to the door 120 to open the door 120 relative to the housing 110.

[0133] In another example, the door opening mechanism 200 is mounted on the door body 120, and the door opening member 220 is directly opposite the box body 110. During the process of moving from the retraction position to the ejection position, the door opening member 220 applies a pushing force to the box body 110, causing the door body 120 to open relative to the box body 110 under the reaction force.

[0134] It should be noted that since the electrical equipment in this application embodiment includes the door opening mechanism 200 of any of the above technical solutions, it has the technical features and beneficial effects of the door opening mechanism 200 of any of the above technical solutions, which will not be repeated here.

[0135] According to the embodiments of this application, the electrical equipment improves the ease of use of the electrical equipment and reduces the overall production cost by setting the door opening mechanism 200.

[0136] In some embodiments, the device body 100 may be provided with multiple door opening mechanisms 200. The multiple door opening mechanisms 200 may be distributed along the height direction of the device body 100 to increase the force exerted when the door 120 is opened and to improve the stability of the door 120 opening. When multiple doors 120 are provided, the multiple door opening mechanisms 200 may correspond to the multiple doors 120 so that all doors 120 can open automatically.

[0137] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0138] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0139] In the description of this application, "first feature" and "second feature" may include one or more of the features.

[0140] In the description of this application, "multiple" means two or more.

[0141] In the description of this application, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or the first and second features being in contact through another feature between them.

[0142] In the description of this application, the terms "above," "over," and "on top" for the first feature and the second feature include the first feature being directly above or diagonally above the second feature, or simply indicate that the first feature is at a higher horizontal level than the second feature.

[0143] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0144] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A door opening mechanism, installed on the equipment body, characterized in that, The door opening mechanism includes: The drive unit is installed on the main body of the device; The door opening component is poweredly coupled to the drive device to reciprocate between the retracted position and the ejected position under the drive of the drive device; A first coupling element is disposed on the door opening element and extends along the direction of movement of the door opening element; The second coupling element is disposed on one side of the door opening element and coupled to the first coupling element; The controller is electrically connected to the drive device and the second coupling element, and receives the position information of the first coupling element detected by the second coupling element.

2. The door opening mechanism according to claim 1, characterized in that, The first coupling element is a magnetic strip, and the second coupling element is a magnetic coupling sensor.

3. The door opening mechanism according to claim 2, characterized in that, The driving device includes a power wheel rotatably mounted on the equipment body, and the door opening component is provided with a rack portion that meshes with the power wheel; The rack and the magnetic strip are respectively located on different sides of the door opening component.

4. The door opening mechanism according to claim 3, characterized in that, The driving device includes: The motor is mounted on the main body of the device; The first transmission wheel is rotatably mounted on the device body, and the first transmission wheel is coupled to the output end of the motor through a gear set; The second transmission wheel is coaxially connected to the power wheel, and the second transmission wheel meshes with the first transmission wheel; During the process of the door opening component moving from the recycling position to the ejection position, the speed ratio between the first transmission wheel and the second transmission wheel tends to decrease.

5. The door opening mechanism according to claim 4, characterized in that, Both the first transmission wheel and the second transmission wheel are eccentrically arranged.

6. The door opening mechanism according to any one of claims 3-5, characterized in that, It also includes a trigger switch and a trigger element, wherein the trigger switch is electrically connected to the controller, and the trigger element is movably mounted on the device body under the drive of the power wheel; The triggering element activates the trigger switch when the door opening element is in the retraction position or the ejection position; the triggering element deactivates the trigger switch during the process when the door opening element is driven by the power element to move between the retraction position and the ejection position.

7. The door opening mechanism according to claim 6, characterized in that, The power wheel includes a gear portion, a cam portion, and two groove portions arranged circumferentially. The two groove portions are respectively disposed between the two ends of the cam portion and the gear portion. The gear portion meshes with the rack portion. The trigger engages with the groove when the door is in the retracted or ejected position; the trigger engages with the cam as the door is moved between the retracted and ejected positions by the power member.

8. The door opening mechanism according to claim 7, characterized in that, Also includes: An elastic element is connected between the device body and the trigger element, and the elastic element is used to apply a force to the trigger element to drive it into contact with the drive wheel.

9. The door opening mechanism according to claim 6, characterized in that, The controller includes a control board, and the trigger switch is integrated on the control board.

10. An electrical appliance, characterized in that, include: The equipment body includes a housing and a door, with the door covering the housing; The door opening mechanism as described in any one of claims 1-9 is installed in the housing or the door, and the door opening member drives the door to open relative to the housing during the process of moving from the retraction position to the ejection position.

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