Door opening mechanism and electric appliance

Abstract

The application discloses a door opening mechanism and an electrical appliance. The door opening mechanism is installed on an appliance body and comprises a driving device, a door opening part, a first coupling part and a second coupling part. The driving device comprises a motor and a rotating part which are coupled. The door opening part is coupled with the rotating part and reciprocates between a recovery position and an ejection position under the driving of the rotating part. The first coupling part is arranged at the rotating center of the rotating part. The second coupling part is arranged on one side of the rotating axis of the rotating part and is coupled with the first coupling part. A controller is electrically connected with the motor and the second coupling part and receives the rotating angle information of the first coupling part detected by the second coupling part.

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] In a first aspect, this application provides a door opening mechanism, installed on the device body. The door opening mechanism includes:

[0005] The drive unit includes a motor and rotating components that are dynamically coupled together;

[0006] The door opening component is dynamically coupled to the rotating component, so that it reciprocates between the retracted position and the ejected position under the drive of the rotating component;

[0007] The first coupling element is located at the rotation center of the rotating element;

[0008] The second coupling element is located on one side of the rotation axis of the rotating element and is coupled to the first coupling element;

[0009] The controller is electrically connected to the motor and the second coupling element, and receives the rotation angle 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 a first coupling component and a second coupling component, the extension length of the door opening component is determined according to the rotation angle of the rotating component, 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 includes a magnetic element, and the second coupling element includes a magnetic coupling sensor.

[0012] According to one embodiment of this application, the first coupling member further includes a mounting base, which is detachably mounted at the rotation center of the rotating member, and a magnetic member is mounted on the top of the mounting base.

[0013] According to one embodiment of this application, a limiting structure is provided between the mounting base and the rotating component for circumferential limiting engagement.

[0014] According to one embodiment of this application, a plurality of limiting structures are provided, and at least one limiting structure is different in size and / or shape from the other limiting structures.

[0015] According to one embodiment of this application, the rotating member has a mounting groove in the middle, and the mounting base includes an elastic support leg that abuts against the inner wall of the mounting groove.

[0016] According to one embodiment of this application, the driving device includes a power wheel and a plurality of transmission wheels, wherein the plurality of transmission wheels are dynamically coupled to both the motor and the power wheel, and one of the transmission wheels constitutes a rotating component.

[0017] The door opening mechanism is equipped with a rack that meshes with the drive wheel.

[0018] According to one embodiment of this application, as the door opening member moves from the retraction position to the ejection position, the speed ratio of a plurality of drive wheels tends to decrease.

[0019] 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.

[0020] 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 wheel.

[0021] Secondly, this application provides an electrical device. The electrical device includes:

[0022] The equipment body includes a housing and a door, with the door covering the housing;

[0023] 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.

[0024] 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.

[0025] 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

[0026] 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:

[0027] Figure 1 This is a schematic diagram of the door opening mechanism provided in the embodiments of this application;

[0028] Figure 2 This is a partial structural schematic diagram of the door opening mechanism provided in an embodiment of this application;

[0029] 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;

[0030] Figure 4 This is another schematic diagram showing the cooperation between the door opening component, the first coupling component, and the second coupling component provided in the embodiments of this application;

[0031] Figure 5 This is a schematic diagram of the structure of the first coupling element provided in the embodiment of this application;

[0032] Figure 6 This is a schematic diagram of the mounting base provided in the embodiments of this application;

[0033] Figure 7 This is a schematic diagram of the rotating component and drive wheel provided in the embodiments of this application;

[0034] Figure 8 This is another partial structural schematic diagram of the door opening mechanism provided in the embodiments of this application;

[0035] Figure 9 This is another partial structural schematic diagram of the door opening mechanism provided in the embodiments of this application;

[0036] Figure 10 This is another partial structural schematic diagram of the door opening mechanism provided in the embodiments of this application;

[0037] Figure 11 This is another partial structural schematic diagram of the door opening mechanism provided in the embodiments of this application;

[0038] Figure 12 This is a partial structural schematic diagram of the electrical equipment provided in the embodiments of this application.

[0039] Figure label:

[0040] 100. Equipment body; 110. Cabinet; 120. Door;

[0041] 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. Rotating component; 2131. Mounting groove; 2132. Positioning groove; 214. First transmission wheel; 215. Second transmission wheel; 220. Door opening component; 221. Rack section; 222. Second anti-foolproof part; 230. First coupling component; 231. Magnetic component; 232. Mounting base; 233. Groove; 234. Elastic support leg; 235. Positioning key; 240. Second coupling component; 250. Control board; 260. Trigger switch; 270. Trigger component; 280. Elastic component; 290. Housing. Detailed Implementation

[0042] 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.

[0043] The following is for reference. Figures 1-12 This application describes a door opening mechanism and electrical device according to embodiments thereof.

[0044] Please see Figures 1 to 4 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.

[0045] 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.

[0046] The drive unit 210 includes a motor 212 and a rotating member 213 that are poweredly coupled together; the door opening member 220 is poweredly coupled together with the rotating member 213 to reciprocate between the retraction position and the ejection position under the drive of the rotating member 213; the first coupling member 230 is located at the rotation center of the rotating member 213; the second coupling member 240 is located on one side of the rotation axis of the rotating member 213 and is coupled to the first coupling member 230; the controller is electrically connected to the motor 212 and the second coupling member 240 and receives the rotation angle information of the first coupling member 230 detected by the second coupling member 240.

[0047] The drive unit 210 is installed in a suitable position on the equipment body 100 to ensure effective power transmission without affecting the normal layout and operation of other internal components of the equipment body 100. The drive unit 210 includes a motor 212 and a rotating component 213. The motor 212 serves as the power source for the drive. The motor 212 is a DC brushless motor with precise speed adjustment and stable torque output. The motor 212 can be power-coupled to the rotating component 213 via gear transmission, coupling, or transmission belt. The rotating component 213 is rotatably mounted on a corresponding shaft seat on the equipment body 100, ensuring flexible and smooth rotation around its own axis. The rotating component 213 can be directly coupled to the door opening component 220, or power-coupled via a belt, gear, or other transmission mechanism for reliable power transmission. This allows the rotating component 213 to drive the door opening component 220 in reciprocating motion when it rotates.

[0048] Driven by the drive device 210, the door opening component 220 can smoothly reciprocate between the retracted position (i.e., 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). The door opening component 220 can be a long strip of metal or high-strength plastic component, which applies force to the door body 120 during its movement, driving the door body 120 to open.

[0049] The first coupling element 230 is installed at the rotation center of the rotating element 213, and rotates synchronously with the rotation of the rotating element 213. The second coupling element 240 is a sensor corresponding to the first coupling element, installed on one side of the extension direction of the rotation axis of the rotating element 213, and maintaining a close sensing distance with the first coupling element 230. The second coupling element 240 can be electrically connected to the controller through a wire to transmit the detected data in real time.

[0050] The controller is electrically connected to the motor 212 on the one hand, and can precisely control the start, stop, speed and direction of the motor 212; on the other hand, it receives the rotation angle information of the first coupling member 230 detected and transmitted by the second coupling member 240, and uses this as the key basis for determining the opening angle of the refrigerator door.

[0051] 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.

[0052] As the door opening component 220 moves, the first coupling component 230 rotates synchronously. The second coupling component 240 continuously detects the rotation angle information of the first coupling component 230 and converts it into an electrical signal, which is then transmitted to the controller in real time. Because the rotating component 213 and the door opening component 220 are coupled, the controller can infer the movement distance of the door opening component 220 based on the received rotation angle information, and then quickly calculate the current opening angle of the door body 120 through an internally preset algorithm model. For example, if the second coupling element 240 detects that the rotation angle of the first coupling element 230 is 0, the door opening element 220 is close to the retracted position, and the controller determines that the refrigerator door is in a nearly closed state. When the second coupling element 240 detects that the first coupling element 230 has rotated to a certain angle, combined with the previous calibration data, it can be known that the door opening element 220 extends a certain length at this time, corresponding to the refrigerator door opening at a medium angle, such as 45°. If the second coupling element 240 detects that the rotation angle of the first coupling element 230 has reached the maximum, it indicates that the door opening element 220 is close to or has reached the top position, and the refrigerator door opening angle is large, close to 90° or has reached the maximum opening angle preset by the user.

[0053] 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.

[0054] 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.

[0055] 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 according to the rotation angle of the rotating component 213, 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.

[0056] Please see Figure 1 and Figure 2 In 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.

[0057] 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.

[0058] The housing 290 may be provided with a guide groove to guide the movement of the door opening component 220 and a limiting groove to limit the movement of the drive wheel 211, so as to improve the stability of the movement of the door opening component 220 and the drive wheel 211.

[0059] Please refer to Figure 3 and Figure 4 Taking the rotating member 213 installed on the bottom shell of the housing 290 as an example, the second coupling member 240 can be installed on the top shell opposite to the rotating member 213 so that the second coupling member 240 corresponds to the first coupling member 230.

[0060] Please see Figures 1 to 4 According to some embodiments of this application, the first coupling member 230 may include a magnetic member 231, and the second coupling member 240 may include a magnetic coupling sensor.

[0061] The first coupling element 230 can be a magnetic element 231 with high permeability and stable magnetic properties. Specifically, it can be a magnetic block fixedly mounted on the rotating element 213. The magnetic coupling sensor is installed on one side of the rotation axis of the rotating element 213, corresponding to the magnetic element 231. The ideal sensing distance between the two is designed according to the debugging and actual situation. This distance can ensure that the magnetic coupling sensor can accurately capture the weak magnetic field changes emitted by the magnetic element 231, and can effectively avoid magnetic field interference or saturation phenomena that may be caused by the distance being too close, thus ensuring the purity and reliability of signal acquisition.

[0062] In one example, the magnetic coupling sensor can be composed of an integrated array of multiple highly sensitive magnetic elements. These magnetic elements are distributed according to specific geometric arrangement rules and are laid out in an orderly manner along the axis of the rotating component 213. Utilizing the principle of magnetoelectric conversion, it can monitor the subtle changes in the magnetic field of the magnetic component 231 during rotation in real time from all directions and multiple angles, and quickly convert these invisible magnetic field fluctuations into precise electrical signals.

[0063] Among them, the magnetic coupling sensor can also be connected to the controller in real time and stably through a special wire with multiple layers of electromagnetic shielding, ensuring that the signal in the transmission line is not affected by the external electromagnetic environment.

[0064] As the rotating component 213 rotates, the magnetic component 231 rotates synchronously. The magnetic coupling sensor can continuously detect the changes in the magnetic field of the magnetic component 231 when it rotates to different angles. Different angles correspond to different magnetic field characteristics. The magnetic coupling sensor can accurately capture these changes. By judging the rotation angle of the rotating component 213, the movement distance and opening angle of the door opening component 220 can be calculated.

[0065] Please see Figure 5 and Figure 6 According to some embodiments of this application, the first coupling member 230 may further include a mounting base 232, which is detachably mounted on the rotation center of the rotating member 213, and the magnetic member 231 may be mounted on the top of the mounting base 232.

[0066] Mounting base 232 can be injection molded from high-strength engineering plastic. The shape of mounting base 232 can be roughly cylindrical to facilitate alignment and assembly at the rotation center of rotating component 213. It is understood that mounting base 232 can also be other shapes, without any specific limitation. Mounting base 232 can be detachably installed on rotating component 213 to facilitate subsequent maintenance and replacement.

[0067] For example, the top of the mounting base 232 can be a flat circular platform with a shallow groove 233 reserved in the center for precisely placing the magnetic component 231. The inner surface of the groove 233 is finely polished and chemically treated, with good flatness and low roughness, ensuring that the magnetic component 231 fits tightly with the groove 233 and preventing displacement during rotation.

[0068] The magnetic component 231 can be fixed in the groove 233 with adhesive to ensure the stability of the installation of the magnetic component 231. In one example, the magnetic component 231 can be a thin disc shape, and the groove 233 can be a shallow circular groove corresponding to the magnetic component 231.

[0069] Please see Figure 2 , Figures 5 to 7 According to some embodiments of this application, a limiting structure is provided between the mounting base 232 and the rotating member 213 for circumferential limiting cooperation.

[0070] The stable rotation of the mounting base 232 directly affects the stability and regularity of the magnetic field changes of the magnetic component 231. Throughout the entire process of opening and closing the refrigerator door, the magnetic coupling sensor continuously monitors the rotation angle of the magnetic component 231, and the limiting structure ensures this monitoring process. When the rotating component 213 rotates to any angle, the mounting base 232 can be precisely positioned, ensuring that the magnetic field distribution of the magnetic component 231 is always presented to the magnetic coupling sensor in the expected manner. For example, when the rotating component 213 rotates 45°, due to the limiting structure, the magnetic component 231 on the mounting base 232 also rotates synchronously by 45°. The magnetic field signal received by the magnetic coupling sensor corresponds perfectly to the preset 45° angle information, thus ensuring that the controller can accurately control the opening angle of the refrigerator door based on precise monitoring data, providing users with a more stable and reliable user experience.

[0071] In one example, the limiting structure can be a keyway structure. Specifically, the bottom of the mounting base 232 can be provided with a laterally protruding positioning key 235, and the rotating member 213 can be provided with a positioning groove 2132. The positioning key 235 of the mounting base 232 and the positioning groove 2132 engage in a limiting cooperation. Alternatively, the positioning key 235 can be provided on the rotating member 213, and the bottom of the mounting base 232 can be provided with a positioning groove 2132.

[0072] Please see Figures 5 to 7 According to some embodiments of this application, multiple limiting structures may be provided, and at least one limiting structure may have a different size and / or shape than the other limiting structures.

[0073] Multiple limiting structures are distributed circumferentially along the mounting base 232 to further improve stability during the rotation of the rotating component 213. The number of limiting structures is not specifically limited and can be two, three, four or more. For example, four limiting structures can be provided.

[0074] One of the limiting structures has a different size and / or shape than the other limiting structures. For example, the limiting structure can be a keyway structure, where one locating key 235 is larger than the others, and the opening size of the corresponding locating groove 2132 is also larger than the others. When an operator assembles the mounting base 232 with the rotating component 213, the presence of multiple limiting structures with similar appearances may lead to misoperation. By using a larger locating component, a foolproof mechanism is implemented. If the installation direction is incorrect, the larger locating key 235 cannot be smoothly inserted into the smaller locating groove 2132, clearly indicating an installation error to the operator. Only when the mounting base 232 is adjusted to the correct direction and the foolproof locating key 235 is precisely aligned with the corresponding locating groove 2132 can it be smoothly inserted, guiding the operator to complete the correct installation and preventing component damage or system malfunction due to misinstallation.

[0075] In some examples, one of the positioning keys 235 can also be set to an L-shape, and the corresponding positioning slot 2132 is an L-shaped slot, making the positioning clearer.

[0076] By setting a foolproof limit structure, the initial position and angle of the magnetic component 231 are ensured to be correct during installation. The magnetic coupling sensor accurately monitors the rotation angle based on the stable magnetic field change, and the controller accurately calculates the position of the door opening component 220 and the opening angle of the refrigerator door accordingly, thereby improving the stability and accuracy of use.

[0077] Please see Figures 5 to 7 According to some embodiments of this application, the middle part of the rotating member 213 may be provided with a mounting groove 2131, and the mounting base 232 may include an elastic support leg 234 that abuts against the inner wall of the mounting groove 2131.

[0078] Taking the mounting base 232 as roughly cylindrical as an example, the mounting groove 2131 in the middle of the rotating part 213 can be a circular mounting groove 2131.

[0079] The main body of the mounting base 232 can be injection molded from engineering plastic. Besides the flat top surface for mounting the magnetic component 231, at least two evenly distributed elastic legs 234 extend outward from the bottom of the mounting base 232. The elastic legs 234 can be elongated columnar; specifically, the outer shape of the elastic legs 234 can be arc-shaped to adapt to the shape of the inner wall of the mounting groove 2131, facilitating a close contact with the inner wall of the mounting groove 2131. Furthermore, the radius of the arc formed by the elastic legs 234 can be slightly larger than the radius of the mounting groove 2131. For example, the radius of the arc formed by the elastic legs 234 in its natural state can be 1-2 mm larger than the radius of the mounting groove 2131.

[0080] The elastic support leg 234 is made of a material with high elastic modulus and good wear resistance, which can ensure sufficient elastic support force and also has a certain rigidity to prevent excessive deformation. The elastic support leg 234 is in close contact with the inner wall of the mounting groove 2131, which plays the role of positioning and increasing friction, ensuring the stability of the mounting base 232 on the rotating part 213.

[0081] When assembling the mounting base 232 and the rotating component 213, the operator aligns the mounting base 232 with the mounting groove 2131 of the rotating component 213 and gently presses the elastic support leg 234 inward. Under pressure, the support leg undergoes elastic deformation and is gradually compressed into the mounting groove 2131. At this time, the elastic support leg 234 is in close contact with the inner wall of the mounting groove 2131, generating a large frictional force. This not only prevents the mounting base 232 from easily falling off but also helps the operator sense the installation status. After the mounting base 232 is fully embedded in the mounting groove 2131, the elastic support leg 234, under its own elastic force, presses tightly against the inner wall of the mounting groove 2131, ensuring a tight and stable connection between the mounting base 232 and the rotating component 213. This also ensures that the center of the mounting base 232 and the rotation center of the rotating component 213 are highly aligned, laying the foundation for the precise rotation of the magnetic component 231.

[0082] During the opening and closing of the refrigerator door, the rotating component 213 rotates under the drive of the motor 212. The mounting base 232, with its elastic support leg 234 tightly engaged with the mounting groove 2131, rotates synchronously with the rotating component 213, maintaining a stable relative position at all times. The elastic support leg 234 absorbs minor vibrations that may occur during rotation, preventing these vibrations from being transmitted to the magnetic component 231 and affecting the accurate monitoring of magnetic field changes by the magnetic coupling sensor. Furthermore, when the rotating component 213 accelerates, decelerates, or is subjected to external impact, the elastic support leg 234 cushions the force through its elastic deformation, ensuring that the mounting base 232 does not shift or wobble due to inertia or external force. This ensures that the magnetic component 231 performs regular circular motion around the axis of the rotating component 213, making the magnetic field signal received by the magnetic coupling sensor stable and reliable. This, in turn, ensures that the controller can accurately control the opening angle of the refrigerator door based on precise rotation angle information.

[0083] Please see Figures 5 to 7 According to some embodiments of this application, a limiting structure may be provided between the elastic support leg 234 and the inner wall of the mounting groove 2131. Specifically, the positioning key 235 may be provided on the outer side of the elastic support leg 234, and the positioning groove 2132 may be provided on the inner wall of the mounting groove 2131. When the elastic support leg 234 abuts against the inner wall of the mounting groove 2131, the positioning key 235 and the positioning groove 2132 cooperate accordingly, making assembly simple and accurate and improving the overall operational stability.

[0084] In some embodiments, the first coupling member 230 and the second coupling member 240 may also be in other forms, specifically at least one of the following.

[0085] Firstly, the first coupling element 230 is an optical encoder disk, and the second coupling element 240 is an optical sensor.

[0086] The optical encoding disk is a disc-shaped optical element installed at the center of the rotating component 213. The surface of the optical encoding disk is divided into many finely concentric annular regions. Each annular region is fabricated using micro-nano processing techniques such as photolithography to create an encoding pattern with different transparency or reflectivity. These patterns are distributed along the circumference, representing precise angular information. For example, using binary encoding, transparent parts represent "0," and opaque parts represent "1," with different binary combinations corresponding to different angular values. When the rotating component 213 rotates, the optical encoding disk rotates synchronously.

[0087] The optical sensor consists of a light-emitting diode (LED) and a photodetector. The LED serves as the light source, emitting light that shines perpendicularly onto the optical encoder disk. The photodetector, located on the other side of the optical encoder disk, receives light transmitted through or reflected from the disk. As the optical encoder disk rotates, the intensity and pattern of the light signal received by the photodetector change. For example, when light passes through a transparent area, the detector receives a stronger light signal, while the signal weakens when passing through an opaque area. The photodetector converts these changes in light signal into electrical signals, which are then converted into digital signals by a signal processing circuit and transmitted to the controller. The controller determines the rotation angle of the rotating component 213 based on the encoded information in these digital signals, and further calculates the position of the door opening component 220 and the door opening angle.

[0088] Secondly, the first coupling element 230 is a capacitor plate, and the second coupling element 240 is a capacitor detection circuit.

[0089] The capacitor comprises two concentric metal plates, which serve as the two poles of the capacitor and are mounted at the center of the rotating component 213. One plate is fixed to the rotating component 213 and rotates with it, while the other plate is fixed to the device body 100 and remains relatively stationary. A small gap is maintained between the two plates, forming a variable capacitor. When the rotating component 213 rotates, the relative area of ​​the two plates changes, thus changing the capacitance value. For example, at the initial position, the overlap area of ​​the two plates is at its maximum, and the capacitance is also at its maximum; as the rotation progresses, the overlap area gradually decreases, and the capacitance value decreases accordingly. This change in capacitance value has a specific functional relationship with the rotation angle.

[0090] The capacitance detection circuit mainly includes a high-frequency AC signal source, a capacitance-to-voltage conversion circuit, and an analog-to-digital converter (ADC). The high-frequency AC signal source provides a stable high-frequency AC signal to the capacitor plates, and the capacitance-to-voltage conversion circuit converts the change in capacitance into a change in voltage. Since the capacitance value changes with the rotation angle, the converted voltage signal also changes accordingly. The ADC then converts this analog voltage signal into a digital signal and transmits it to the controller. The controller calculates the rotation angle of the rotating component 213 based on the received digital voltage signal using a pre-calibrated capacitance-angle relationship curve, thereby enabling the monitoring of the door opening angle.

[0091] Thirdly, the first coupling element 230 is a mechanical encoder wheel, and the second coupling element 240 is a mechanical contact sensor.

[0092] The mechanical encoding wheel is a wheel with specially shaped teeth or grooves, mounted at the center of the rotating component 213. The circumference of the encoding wheel is distributed with teeth or grooves of different shapes, numbers, and spacings; the arrangement of these teeth or grooves represents information about the rotation angle. For example, using Gray code encoding, only one bit of the teeth or grooves on the encoding wheel changes between two adjacent angular positions, thus avoiding incorrect encoding during angle transitions. The mechanical encoding wheel rotates synchronously when the rotating component 213 rotates.

[0093] Mechanical contact sensors can be a set of microswitches or contact encoders. The contacts of the microswitches make contact with the teeth or grooves of the mechanical encoder wheel; as the encoder wheel rotates, the contacts change their on / off states according to the changes in the teeth or grooves. Contact encoders, on the other hand, contact the encoder wheel through multiple contact points, reading the encoded information based on the continuity of these contacts. These sensors convert the tooth or groove information of the mechanical encoder wheel into electrical signals, which are then transmitted to the controller. The controller, according to pre-set encoding rules, interprets these electrical signals into rotation angle information, thereby determining the door opening angle.

[0094] Please see Figure 2 , Figures 8 to 11 According to some embodiments of this application, the drive device 210 may include a power wheel 211 and a plurality of transmission wheels, the plurality of transmission wheels being dynamically coupled to both the motor 212 and the power wheel 211, and one of the transmission wheels constituting a rotating member 213; the door opening member 220 may be provided with a rack portion 221 that meshes with the power wheel 211.

[0095] The drive device 210 includes a power wheel 211 and several transmission wheels rotatably mounted on the equipment body 100. The shafts of the power wheel 211 and several transmission wheels can be installed in the equipment body 100 through bearings and other components by means of pre-reserved mounting holes, so that the power wheel 211 and the transmission wheels can rotate flexibly around the shafts.

[0096] The torque output by the motor 212 is transmitted to the power wheel 211 through several transmission wheels. Specifically, a small gear can be installed on the output shaft of the motor 212. The small gear transmits power to the power wheel 211 through several transmission wheels. This design can increase the output torque, 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 beginning of opening 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.

[0097] The door opener 220 has a rack portion 221 on the side that engages with the drive wheel 211. The rack portion 221 consists of multiple evenly arranged teeth that match 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 outward in a set direction, thereby opening the refrigerator door; when the drive wheel 211 rotates counterclockwise, it drives the door opener 220 back to the retracted position.

[0098] One of the several transmission wheels constitutes the rotating member 213, that is, the first coupling member 230 is installed on one of the several transmission wheels. It can be understood that the rotation angle of the power wheel 211 is related to the moving distance of the rack portion 221. Since there is rigid contact between the transmission wheels and between the transmission wheel and the power wheel 211, when the meshing relationship is determined, the moving distance of the rack portion 221 can be calculated from the rotation angle of any transmission wheel or the power wheel 211, and then the moving distance of the top door member can be obtained, and then the opening angle of the door body 120 can be calculated.

[0099] 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.

[0100] 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.

[0101] Please see Figure 2 , Figures 8 to 11 According to some embodiments of this application, as the door opening member 220 moves from the retraction position to the ejection position, the speed ratio of several drive wheels tends to decrease.

[0102] Throughout the entire process of the door opening component 220 moving from the retracted position to the ejected position, there is a unique characteristic in the change of transmission speed ratio. The speed ratio of several transmission wheels tends to decrease, that is, the speed ratio between at least two transmission wheels tends to decrease. In other words, when the output speed of the motor 212 remains constant, as the door opening component 220 moves from the retracted position to the ejected position, the speed of the power wheel 211 tends to increase.

[0103] For example, the drive device 210 includes at least a first transmission wheel 214 and a second transmission wheel 215. The first transmission wheel 214 is powered and coupled to the motor 212, and the first transmission wheel 214 meshes with the second transmission wheel 215. The second transmission wheel 215 is coaxially connected to the power wheel 211. The torque output by the motor 212 passes sequentially through the first transmission wheel 214 and the second transmission wheel 215 to the power wheel 211. In the initial stage of door opening, a larger torque is needed to overcome the sealing resistance of the door 120, hinge friction, and inertia. At this time, a larger transmission speed ratio (meaning the second transmission wheel 215 and the power wheel 211 rotate at a slower speed than the first transmission wheel 214) ensures that the power output by the motor 212, after deceleration and torque amplification, effectively pushes the door opening component 220 to begin moving, allowing the refrigerator door to open smoothly. As the door opening component 220 gradually moves outward, the resistance to the refrigerator door gradually decreases, and we want the door opening speed to be appropriately increased 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.

[0104] 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.

[0105] 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.

[0106] 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.

[0107] 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.

[0108] Please see Figures 8 to 11 According to some embodiments of this application, both the first transmission wheel 214 and the second transmission wheel 215 can be eccentrically configured.

[0109] 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.

[0110] Please see Figures 8 to 11 In some embodiments, the first transmission wheel 214 and the second transmission wheel 215 can be non-circular gears.

[0111] 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.

[0112] 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.

[0113] 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.

[0114] Please see Figures 8 to 11 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.

[0115] With the limited travel of the door opening component 220, the rotation angle of the drive wheel 211 is also limited. During the reciprocating motion of the door opening component 220 from the retracted position to the ejected position driven by the drive wheel 211, the rotation angle of the drive wheel 211 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.

[0116] Please see Figure 2 , Figures 8 to 11According 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 wheel 211.

[0117] 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.

[0118] 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.

[0119] 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.

[0120] In actual implementation, please refer to Figures 8 to 11 , Figures 8 to 11The 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 wheel 211 to stop rotating, so that the door opening component 220 stops its ejection action. The door opening mechanism 200 can control the drive wheel 211 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 11 to 8 Driven 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.

[0121] During the entire door opening process, the door opening mechanism 200 controls the power wheel 211 to rotate after receiving the door opening signal; when it receives the first sensing signal from the trigger switch 260, it controls the power wheel 211 to stop and the door 120 to open; after waiting for a preset time, it controls the power wheel 211 to reverse; when it receives the second sensing signal from the trigger switch 260, it controls the power wheel 211 to stop and the door opening component 220 to retract, completing a maximum angle door opening action.

[0122] 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.

[0123] Please see Figures 8 to 11 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 of the door member 220 moving between the retracted position and the ejected position driven by the power wheel 211.

[0124] 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.

[0125] 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.

[0126] 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.

[0127] 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.

[0128] 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).

[0129] 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.

[0130] 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. Upon 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 operating 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.

[0131] 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 door opening angle and good coordination with other functional modules (such as compressor control).

[0132] Please refer to 9. According to some embodiments of this application, the gear portion 2111 and the rack portion 221 are respectively provided with a first anti-mistake portion 2112 and a second anti-mistake portion 222 that cooperate with each other.

[0133] Understandably, because the gear section 2111 is not a fully toothed configuration, and the rotation angle of the drive wheel 211, the moving position of the door opening member 220, and the rotation position of the trigger member 270 correspond to each other, it is necessary to ensure accurate meshing between the gear section 2111 of the drive wheel 211 and the rack section 221 of the door opening member 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.

[0134] 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 233. The teeth of the rack portion 221 that mesh with the aforementioned two teeth are provided with anti-misalignment grooves 233 corresponding to the anti-misalignment protrusions. During assembly, the anti-misalignment protrusions and anti-misalignment grooves 233 must be aligned and connected. Without affecting meshing, it is not easy to assemble incorrectly.

[0135] In another example, the location of the anti-mistake protrusion is not limited. The anti-mistake protrusion extending laterally can be provided on the tooth of the gear part 2111 at the end, and the anti-mistake groove 233 can be provided at the corresponding end position of the rack part 221.

[0136] Please see Figures 8 to 11 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.

[0137] 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.

[0138] 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.

[0139] 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.

[0140] 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.

[0141] 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.

[0142] Please see Figure 2 and Figure 8According to some embodiments of this application, the controller may include a control board 250, and the trigger switch 260 may be integrated on the control board 250.

[0143] 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 (such as a suitable location like the electrical control compartment reserved 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.

[0144] 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). It then sends precise control commands 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.

[0145] 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.

[0146] 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.

[0147] Please see Figure 12 This application also provides an electrical device.

[0148] The appliance can be a refrigerator, cabinet, dishwasher, freezer, wine cabinet, etc., and there are no specific limitations.

[0149] The electrical device includes a device body 100 and a door opening mechanism 200 as described in any of the above technical solutions.

[0150] 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.

[0151] The door opening mechanism 200 can be installed on the housing 110 or on the door 120.

[0152] 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.

[0153] 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.

[0154] 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.

[0155] 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.

[0156] 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.

[0157] 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.

[0158] 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.

[0159] In the description of this application, "first feature" and "second feature" may include one or more of the features.

[0160] In the description of this application, "multiple" means two or more.

[0161] 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.

[0162] 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.

[0163] 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.

[0164] 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 includes a motor and rotating components that are dynamically coupled together; The door opening component is dynamically coupled to the rotating component, so as to reciprocate between the retracted position and the ejected position under the drive of the rotating component; The first coupling element is located at the rotation center of the rotating element; The second coupling element is disposed on one side of the rotation axis direction of the rotating element and is coupled to the first coupling element; The controller is electrically connected to the motor and the second coupling element, and receives the rotation angle 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 includes a magnetic element, and the second coupling element includes a magnetic coupling sensor.

3. The door opening mechanism according to claim 2, characterized in that, The first coupling element further includes a mounting base, which is detachably mounted at the rotation center of the rotating element, and the magnetic element is mounted on the top of the mounting base.

4. The door opening mechanism according to claim 3, characterized in that, A limiting structure is provided between the mounting base and the rotating component for circumferential limiting engagement.

5. The door opening mechanism according to claim 4, characterized in that, The limiting structure is provided in multiple ways, and at least one of the limiting structures is different in size and / or shape from the other limiting structures.

6. The door opening mechanism according to claim 3, characterized in that, The rotating component has a mounting groove in the middle, and the mounting base includes an elastic support leg that abuts against the inner wall of the mounting groove.

7. The door opening mechanism according to any one of claims 1-6, characterized in that, The drive device includes a power wheel and several transmission wheels. The several transmission wheels are dynamically coupled to both the motor and the power wheel. One of the transmission wheels constitutes the rotating component. The door opening component is provided with a rack portion that meshes with the power wheel.

8. The door opening mechanism according to claim 7, characterized in that, As the door opening component moves from the retraction position to the ejection position, the speed ratio of the plurality of transmission wheels tends to decrease.

9. The door opening mechanism according to claim 7, 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 component is in the retraction position or the ejection position; the triggering element deactivates the trigger switch as the door opening component moves between the retraction position and the ejection position driven by the power wheel.

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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