Clutching automatic door opening and closing device and refrigeration equipment

Abstract

The application provides a kind of clutch automatic switch door device and refrigeration equipment, belong to household appliance technical field, it includes drive mechanism, transmission wheel, clutch mechanism;Clutch mechanism includes being located on the limiting portion of transmission wheel, clutch locking portion, clutch push portion;Clutch locking portion includes the lock block movable along first pivot, the lock tongue movable along first radial and the first reset member connecting both;Clutch push portion moves along first radial, clutch push portion is driven lock block to make lock tongue move along first pivot, make lock tongue cooperate with limiting portion;When lock tongue cooperates with limiting portion, transmission wheel is subjected to abnormal force greater than first preset value, limiting portion forces lock tongue to retract along first radial and compress first reset member, make lock tongue and limiting portion separate, lock block remains unmoved, to avoid impact force transmission to clutch push portion;The clutch automatic switch door device of the application can interrupt the impact force transmission when being subjected to abnormal impact, to protect each component.

Description

Technical Field

[0001] This application relates to the field of household appliance technology, and in particular to an automatic door opening and closing device with clutch and a refrigeration equipment. Background Technology

[0002] With the development of society and the economy and the improvement of people's living standards, refrigerators have gradually become an indispensable household appliance. As intelligent technology continues to expand into the home appliance field, consumers are increasingly demanding ease of use and intelligent features in their appliances. Automatic opening and closing, as a basic function of intelligent refrigerators, is becoming increasingly widespread.

[0003] In related technologies, refrigerators typically achieve automatic opening and closing through an electrically driven door mechanism. However, in daily use, refrigerator doors inevitably encounter non-cooperative situations such as user misoperation, children climbing on them, pushing and pulling the door while moving the refrigerator, or getting stuck by foreign objects during movement. In existing technologies, the energy of such abnormal impacts is almost entirely borne directly by rigid components such as gears in the electrically driven door mechanism. This can lead to plastic deformation of the components, crushing of the gear surfaces, or motor overload damage, resulting in decreased product reliability, increased after-sales repair rates, and fundamentally limiting the universality and user trust of automatic door opening and closing technology in complex home environments. Summary of the Invention

[0004] This application provides a clutch-operated automatic door opening and closing device. The clutch mechanism of the clutch-operated automatic door opening and closing device can interrupt the transmission of impact force when subjected to abnormal impact, so as to protect the various components of the clutch-operated automatic door opening and closing device.

[0005] In a first aspect, an automatic door opening and closing device with clutch is provided, comprising:

[0006] Drive mechanism, used to output power;

[0007] A transmission mechanism for transmitting power from the drive mechanism; the transmission mechanism includes:

[0008] A transmission wheel that can rotate about a first axis; one radial direction of the transmission wheel is denoted as the first radial direction.

[0009] Clutch mechanism, which includes:

[0010] A limiting part is provided on the transmission wheel;

[0011] The clutch locking part includes:

[0012] A locking block that can reciprocate along the first rotating shaft;

[0013] A locking tongue, which is connected to the locking block and is movable relative to the locking block along the first radial direction;

[0014] The first reset component has one end connected to the locking tongue and the other end connected to the locking block;

[0015] A clutch actuator, which is movable along the first radial direction, is used to engage with the locking block;

[0016] As the clutch pusher moves toward the first rotating shaft along the first radial direction, the clutch pusher acts on the locking block and drives the locking tongue to move along the first rotating shaft through the locking block, so that the locking tongue cooperates with the limiting part and the transmission wheel is stopped;

[0017] When the locking tongue engages with the limiting part, and the transmission wheel is subjected to an external force greater than a first preset value, the limiting part acts on the locking tongue, causing the locking tongue to move away from the first rotating shaft along the first radial direction. The first reset member is compressed, the locking tongue disengages from the limiting part, the transmission wheel can rotate, and the lock block remains stationary.

[0018] In the above technical solution, when the transmission wheel is subjected to an external impact or obstacle resistance exceeding the first preset value, the limiting part squeezes the locking tongue, forcing the locking tongue to retract and retreat along the first radial direction, so that the transmission wheel is released from the lock. This avoids component breakage or motor burnout caused by rigid jamming, and transforms the destructive impact force into a flexible action of radial movement of the locking tongue, effectively protecting the drive mechanism and transmission mechanism.

[0019] Secondly, at the moment of overload release, only the locking tongue undergoes radial displacement, while the locking block remains stationary. Therefore, the position of the clutch actuator does not physically change. This ensures that the clutch actuator (such as an electromagnet or motor) engaged with the locking block does not bear any external impact force during the entire abnormal impact process. This fundamentally prevents the impact force from being transmitted back to the fragile precision actuator (clutch actuator), preventing the clutch actuator from bending, jamming, or shifting due to force, and greatly reducing the failure rate of electrical / electronic control components.

[0020] Furthermore, once the external force causing the overload disappears, the compressed first reset member stores elastic potential energy. Once the external force is released, the first reset member releases this energy, pushing the latch bolt radially back towards the first pivot (springing inward). This allows the latch bolt to automatically reset to its locked position after overload retraction without additional power or manual intervention. This ensures that the device can automatically recover to a lockable state after experiencing abnormal impacts, improving the automation level and ease of use of the equipment.

[0021] In some embodiments, the limiting portion includes limiting teeth disposed on the outer peripheral wall of the transmission wheel; a plurality of the limiting teeth are distributed circumferentially along the outer peripheral wall; the locking tongue is configured with a tooth-shaped structure, and the locking tongue engages or disengages with the limiting teeth.

[0022] The above technical solution uses direct gear meshing to achieve locking. Gear meshing is a rigid surface contact connection, capable of transmitting large torques, and eliminates relative slippage or sliding, resulting in high transmission efficiency. When the teeth separate, they completely disengage, leaving a physical gap, representing a complete separation. The transmission wheel rotates with almost no additional resistance (only bearing friction remains).

[0023] In some embodiments, the locking block defines a receiving cavity, and the locking tongue is at least partially mounted within the receiving cavity;

[0024] The first reset member is located within the receiving cavity;

[0025] When the locking tongue moves away from the first rotating shaft relative to the limiting part, the locking tongue moves into the receiving cavity and compresses the first reset member.

[0026] In the above technical solution, the lock block itself is no longer just a simple force transmission component. Instead, it integrates at least part of the lock tongue and the first reset component inside the cavity by forming an internal receiving cavity. This integrates multiple components (lock block, lock tongue, and first reset component) into one unit, greatly saving axial and radial installation space and making the overall structure more compact and small.

[0027] Secondly, the inner wall of the receiving cavity forms a track for the locking tongue to move along the first radial direction. The cavity wall guides the radial movement of the locking tongue, ensuring that the locking tongue follows a precise path each time it retracts and resets, avoiding jamming or misalignment with the limiting part due to shaking or skew. At the same time, the inner wall of the receiving cavity also provides lateral constraint on the compression direction of the first reset member. The first reset member is constrained within the receiving cavity and will not bend laterally during compression, ensuring that the first reset member always works stably within the linear range and extending its fatigue life.

[0028] In some embodiments, the latch has a limiting position and a disengaging position distributed along the first radial direction; wherein the disengaging position is located on the side of the limiting position away from the first pivot.

[0029] When the locking tongue is in the limited position, the locking tongue cooperates with the limited part, and the first reset member is in the initial state;

[0030] When the latch is in the disengaged position, the latch disengages from the limiting part, and the first reset member is compressed;

[0031] The clutch mechanism includes a position detection unit; the position detection unit is used to detect whether the locking tongue has reached the disengaged position.

[0032] In the above technical solution, when an overload forces the latch to retract radially to the disengaged position, the position detection unit immediately captures the status signal. The control system can detect abnormal overload events (such as impacts or obstructions) in the door in real time, rather than relying solely on indirect judgments based on changes in motor current. This direct position sensing provides the system with more accurate and timely feedback on abnormal states.

[0033] In some embodiments, the clutch automatic door opening and closing device includes a base, and the lock block is mounted on the base;

[0034] The clutch mechanism includes a second reset member; the second reset member is located on the side of the locking block near the base;

[0035] The pushing block acts on the locking block, and the locking block moves along the first rotating axis toward the side of the base, while the second reset member is compressed.

[0036] In the above technical solution, after the clutch pusher pushes the locking block towards the base (axial movement) to complete the locking action, the second reset member stores elastic potential energy. Once the force of the clutch pusher is released, the compressed second reset member releases the stored elastic potential energy, pushing the locking block axially away from the base (i.e., reverse reset). After completing one locking trigger, the locking block automatically returns to its initial position without additional power or manual intervention. This ensures that the device can cyclically execute the push-lock-reset standby action sequence, providing a basis for realizing periodic or repetitive locking operations.

[0037] Secondly, the second reset member is located between the locking block and the base. As the locking block moves towards the base, the second reset member is gradually compressed, generating a gradually increasing reverse resistance. When the clutch pusher pushes the locking block, the compression process of the second reset member absorbs the impact kinetic energy of the pusher end, preventing a hard collision between the locking block and the base, and reducing motion noise and mechanical wear. The state when the second reset member is fully compressed naturally forms the physical endpoint of the locking block's axial (first pivot) movement, providing a soft limit for the locking block's movement range.

[0038] In some embodiments, the automatic door opening and closing device includes a guide portion; the guide portion is disposed on the base and cooperates with the locking block so that the locking block can move along the first rotating shaft.

[0039] And / or, the automatic clutch door opening and closing device includes a guide portion; the guide portion is disposed on the base and cooperates with the push block so that the push block can move along the first radial direction.

[0040] The above technical solution constrains the axial movement path of the locking block through the guide section and the radial movement path of the pushing block through the guide section. The guide section ensures that the locking block does not rotate around its axis or wobble radially during axial reciprocating motion, guaranteeing that the locking tongue is always aligned with the correct position of the limiting section. The guide section ensures that the pushing block does not deviate axially during radial movement, guaranteeing that its force is precisely applied to the correct force point of the locking block. The precise constraint of movement in both directions makes the transition from radial pushing to axial locking more accurate and reliable, avoiding jamming or locking failure caused by movement deviations.

[0041] In some embodiments, the clutch locking portion includes:

[0042] The first guide surface is located on the side of the locking block near the clutch push part;

[0043] The clutch actuator includes:

[0044] A push block that can move relative to the locking block along a first radial direction;

[0045] The second guide surface is located at the end of the push block that is close to the first guide surface;

[0046] The push block moves along the first radial direction, the first guide surface interacts with the second guide surface, and the push block drives the locking block to move along the first rotating axis so that the locking block separates from or engages with the limiting part.

[0047] In the above technical solutions, the first and second guide surfaces are typically in surface contact (rather than point or line contact), distributing the force over a specific area. Surface contact reduces the contact stress per unit area, decreases the wear rate of the guide surfaces, and extends the service life of the component. Simultaneously, the dispersed contact stress also reduces the risk of material yielding or failure due to localized overload.

[0048] Furthermore, the first and second guide surfaces have a certain contact area, allowing for effective force transmission even with manufacturing errors or assembly deviations, through adjustments to the contact area. This tolerance reduces the stringent requirements on part machining and assembly precision, improving product manufacturing yield and assembly efficiency. Simultaneously, even with slight wear on the first and / or second guide surfaces during long-term use, contact can still be maintained, and the function will not immediately fail.

[0049] In some embodiments, the automatic door opening and closing device includes a base; the drive wheel and the lock block are mounted on the base;

[0050] The locking block includes a first end near the first rotating shaft and a second end away from the first rotating shaft;

[0051] The push block is located on the side of the locking block away from the first rotating shaft;

[0052] A plane perpendicular to the first pivot and located on the base away from the locking block is designated as the first reference plane;

[0053] Specifically, along the direction from the first end to the second end, the distance between the first guide surface and the first reference surface increases, and the distance between the second guide surface and the first reference surface also increases.

[0054] In the above technical solution, the distances between the first guide surface and the second guide surface and the first reference surface increase synchronously in the same direction (radially outward), indicating that the first guide surface and the second guide surface have a consistent tilting trend. This consistency ensures that the first guide surface and the second guide surface maintain a good contact relationship throughout the entire process of the radial movement of the push block. The directional relationship of the motion conversion is clear and matched, making the conversion from radial motion to axial motion smooth and efficient.

[0055] In some embodiments, the clutch-operated automatic door opening and closing device includes a rotating door mechanism for transmitting power from the clutch-operated automatic door opening and closing device to the outside of the clutch-operated automatic door opening and closing device;

[0056] The transmission wheel includes an internal toothed portion disposed in its inner circumferential direction;

[0057] The transmission mechanism includes:

[0058] The sun gear is connected to the drive mechanism via a transmission connection;

[0059] A rotating component, which is connected to the rotary door mechanism;

[0060] Planetary gears, multiple planetary gears are rotatably mounted on the rotating member;

[0061] The planetary gear meshes with the sun gear, and the planetary gear meshes with the internal gear.

[0062] In the above technical solution, the sun gear serves as the input end (connected to the drive mechanism), and the rotating component serves as the output end (connected to the driven component (door body) through the revolving door mechanism). The internal teeth located in the circumferential direction of the transmission wheel constitute a planetary reduction mechanism. This structure can achieve a large transmission ratio in a compact space, converting the high-speed, low-torque of the drive mechanism (such as a motor) into the low-speed, high-torque required for the door body to rotate, so as to output sufficient torque to overcome the inertia of the driven component (door body) connected to the revolving door mechanism, the friction of the sealing strip, and possible external resistance, while keeping the size and cost of the drive motor within a reasonable range.

[0063] Secondly, the input shaft (sun gear) and output shaft (rotating component) of the planetary gear system are located on the same axis (i.e., the first rotating shaft). This coaxial layout allows the entire transmission mechanism to transmit power in a very small radial space, without the need to stagger the input and output shafts as in parallel shaft gear systems, resulting in a compact structure.

[0064] In a second aspect, a refrigeration device is provided, including the clutch-operated automatic door opening and closing device described above.

[0065] The above technical solutions incorporate an automatic door opening and closing device with a clutch, enabling automatic opening and / or closing of the door. Users can open and close the door without putting down items (such as food or beverages), improving convenience. For people with mobility issues, the elderly, or children, automatic doors reduce the difficulty of opening and closing. In commercial settings (such as convenience stores and restaurants), automatic doors improve staff efficiency.

[0066] In addition, when the door is subjected to an external force exceeding the first preset value (such as forced pulling, the door being blocked by an obstacle, or a child climbing on it), the clutch mechanism automatically disengages, the latch retracts radially, and the drive wheel is released, preventing the impact force from being transmitted back to the drive and transmission mechanisms, thus avoiding motor burnout or gear breakage. The overload trip function can reduce the risk of injury in case of a child's hand getting caught or accidental operation.

[0067] Furthermore, the locking block remains stationary during overload, and the clutch actuator is not subjected to impact force; the clutch actuator (precision components such as electromagnets or drive motors) is never subjected to external impact, making it less prone to damage, thus ensuring the reliable automatic door opening and closing function throughout the service life of the refrigeration equipment. Attached Figure Description

[0068] Figure 1 An exemplary schematic diagram of a clutch-operated automatic door opening and closing device according to some embodiments is shown;

[0069] Figure 2 An exemplary schematic diagram of a partial structure of an automatic door opening and closing device according to some embodiments is shown when the clutch mechanism is in a limited position.

[0070] Figure 3 An exemplary schematic diagram of a partial structure of an automatic door opening and closing device according to some embodiments is shown when the clutch mechanism is in the disengaged state;

[0071] Figure 4 An exploded view of a clutch mechanism according to some embodiments is shown as an example;

[0072] Figure 5 An exemplary diagram of another exploded structure of a clutch mechanism according to some embodiments is shown;

[0073] Figure 6 A partial structural schematic diagram of an automatic clutch door opening and closing device according to some embodiments is shown as an example;

[0074] Figure 7 Another partial structural schematic diagram of a clutch-operated automatic door opening and closing device according to some embodiments is shown as an example;

[0075] Figure 8 An exemplary cross-sectional view of an automatic clutch door opening and closing device according to some embodiments is shown;

[0076] Figure 9 An exploded structural schematic diagram of the transmission mechanism of an automatic clutch door opening and closing device according to some embodiments is shown as an example;

[0077] Figure 10 An exemplary schematic diagram of the overall structure of a refrigeration device according to some embodiments is shown;

[0078] Figure 11 An exemplary schematic diagram of a partial structure of a refrigeration device according to some embodiments is shown;

[0079] Figure 12 A partial structural schematic diagram of a refrigeration device according to some embodiments is shown in the closed state.

[0080] The system includes: a refrigeration unit 100; a cabinet 101; a door 102; a hinge assembly 103; an automatic door opening and closing device 1; a drive mechanism 2; a transmission mechanism 3; a sun gear 30; a rotating component 31; a connecting part 312; a planetary gear 32; a transmission wheel 33; an internal gear part 34; a revolving door mechanism 4; a clutch mechanism 5; a limiting part 50; a clutch locking part 51; a lock block 511; a lock tongue 512; a first reset component 513; a guide bar 514; a first guide surface 515; a clutch pushing part 52; a pushing block 521; a second guide surface 522; a guide bar 523; a clutch drive part 53; a position detection unit 54; a second reset component 55; a base 6; a guide groove 60; and a guide groove 61. Detailed Implementation

[0081] To make the objectives and implementation methods of this application clearer, the exemplary implementation methods of this application will be clearly and completely described below with reference to the accompanying drawings of the exemplary embodiments of this application. Obviously, the exemplary embodiments described are only some embodiments of this application, and not all embodiments.

[0082] It should be noted that the brief descriptions of terms in this application are only for the convenience of understanding the embodiments described below, and are not intended to limit the embodiments of this application. Unless otherwise stated, these terms should be understood in their ordinary and common meaning.

[0083] The terms "first," "second," "third," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar or related objects or entities, and do not necessarily imply a specific order or sequence, unless otherwise specified. It should be understood that such terms are interchangeable where appropriate.

[0084] The terms “comprising” and “having”, and any variations thereof, are intended to cover but not exclude inclusion, for example, a product or device that includes a range of components is not necessarily limited to all of the components that are clearly listed, but may include other components that are not clearly listed or that are inherent to such product or device.

[0085] Please refer to some embodiments of this application. Figures 1-9 As shown, an automatic door opening and closing device 1 includes a drive mechanism 2 for outputting power. The automatic door opening and closing device 1 also includes a transmission mechanism 3 for transmitting power from the drive mechanism 2. The transmission mechanism 3 includes a transmission wheel 33, which can rotate around a first rotating shaft A; one radial direction of the transmission wheel 33 is designated as the first radial direction. The automatic door opening and closing device 1 includes a clutch mechanism 5, which includes a limiting part 50 disposed on the transmission wheel 33. The clutch mechanism 5 includes a clutch locking part 51, which includes a locking block 511 that can reciprocate along the first rotating shaft A. The clutch locking part 51 includes a locking tongue 512, which is connected to the locking block 511 and can move relative to the locking block 511 along the first radial direction. The clutch locking part 51 includes a first reset member 513; one end of the first reset member 513 is connected to the latch 512, and the other end is connected to the locking block 511. When the latch 512 moves away from the limiting part 50 in a direction away from the first rotating shaft A, the first reset member 513 is compressed. The clutch mechanism 5 includes a clutch pushing part 52, which can move along a first radial direction and is used to cooperate with the locking block 511.

[0086] The clutch mechanism 5 has a limited state that engages with the transmission wheel 33 and a disengaged state that separates from the transmission wheel 33. Please refer to [reference needed]. Figure 2 As shown, when the clutch mechanism 5 is in the limit position, the clutch mechanism 5 engages with the transmission wheel 33, and the transmission wheel 33 is fixed. Please refer to... Figure 3 As shown, when the clutch mechanism 5 is in the disengaged state, the clutch mechanism 5 is separated from the transmission wheel 33, and the transmission wheel 33 can rotate. When the clutch mechanism 5 is in the disengaged state, the locking tongue 512 is separated from the limiting part 50, and the locking tongue 512 is located in the disengaged position. The disengaged position and the limiting position are distributed along the rotation axis (first rotation axis A) of the rotating member 31. As an alternative configuration, the disengaged position is located on the side of the limiting position away from the bottom wall of the housing.

[0087] As the clutch pusher 52 approaches the first rotating shaft A along the first radial direction, the clutch pusher 52 acts on the locking block 511, and through the locking block 511 drives the locking tongue 512 to move along the first rotating shaft A, so that the locking tongue 512 cooperates with the limiting part 50, and the transmission wheel 33 is stopped.

[0088] When the locking tongue 512 engages with the limiting part 50, and the transmission wheel 33 is subjected to an external force greater than the first preset value, the limiting part 50 acts on the locking tongue 512, causing the locking tongue 512 to move away from the first rotating shaft A along the first radial direction. The first reset member 513 is compressed, the locking tongue 512 disengages from the limiting part 50, the transmission wheel 33 can rotate, and the locking block 511 remains stationary.

[0089] In the above technical solution, when the transmission wheel 33 is subjected to an external impact or obstacle resistance exceeding the first preset value, the limiting part 50 presses the locking tongue 512, forcing the locking tongue 512 to retract and retreat along the first radial direction, so that the transmission wheel 33 is released from the lock, avoiding component breakage or motor burnout caused by rigid jamming, and converting the destructive impact force into the flexible action of radial movement of the locking tongue 512, effectively protecting the drive mechanism 2 and the transmission mechanism 3.

[0090] Secondly, at the moment of overload release, only the locking tongue 512 undergoes radial displacement, while the locking block 511 remains stationary. Therefore, the position of the clutch push part 52 does not physically change. This ensures that the clutch push part 52 (such as an electromagnet, motor, etc.) engaged by the locking block 511 does not bear any external impact force during the entire abnormal impact process. This fundamentally avoids the reverse transmission of impact force to the fragile precision actuator (clutch push part 52), preventing the clutch push part 52 from bending, jamming, or shifting due to force, and greatly reducing the failure rate of electrical / electronic control components.

[0091] Furthermore, by decomposing the locking action into two dimensions—axial (along the axis) and radial (along the diameter)—a three-dimensional transformation of the motion direction is achieved. Compared to traditional clutch mechanisms with long linkage structures, the above-mentioned technical solution of this application can realize complex clutch functions in a limited space, making the overall device more compact, integrated, and easier to install and conceal.

[0092] In the above technical solution, once the external force causing the overload disappears, the compressed first reset member 513 stores elastic potential energy. Once the external force is released, the first reset member 513 releases its energy, pushing the latch 512 radially back towards the first rotating shaft A (springing inward). This allows the latch 512 to automatically reset to the locking position after overload retraction without additional power or manual intervention. This ensures that the automatic clutch door opening and closing device 1 can automatically return to a lockable state after experiencing abnormal impacts, improving the automation level and ease of use of the equipment.

[0093] Secondly, although the first reset member 513 connects the locking block 511 and the locking tongue 512, it allows relative movement between the two—that is, when the locking tongue 512 retracts radially, the locking block 511 can remain stationary (compressing the first reset member 513), while the first reset member 513 keeps the two from separating. This connection method achieves both functional decoupling (the locking tongue 512 is responsible for dissipating force along the first radial retraction, and the locking block 511 is responsible for axial and radial positioning and holding) and structural coupling (the two are always connected through the first reset member 513 and will not be separated or lost), ensuring that the locking block 511 is not subjected to radial force and does not undergo physical displacement during overload, thereby ensuring the safety of the clutch push part 52; at the same time, when the locking tongue 512 is reset under the action of the first reset member 513, it can be accurately pushed back to the correct position relative to the locking block 511 for locking.

[0094] Furthermore, since the first reset member 513 is always in the connected state, even when the locking tongue 512 and the limiting part 50 are in the limited state, the first reset member 513 will apply a continuous preload force towards the first rotating shaft A to the locking tongue 512. During normal operation, the preload force applied by the first reset member 513 prevents the locking tongue 512 from accidentally dislodging from the limiting part 50 due to minor vibrations or slight external forces, ensuring the reliability of the locked state. In addition, the preload force applied by the first reset member 513 ensures that the locking tongue 512 fits tightly against the limiting part 50, reducing potential mechanical clearance during engagement, thereby reducing operating noise and wear.

[0095] In some embodiments of this application, the limiting part 50 is provided on the outer circumference of the transmission wheel 33.

[0096] In the above technical solution, the movement direction of the locking tongue 512 is along the first radial direction (approaching or moving away from the first rotating shaft A). The limiting part 50 is located on the outer circumference, exactly on the extension line of the radial movement of the locking tongue 512. The locking tongue 512 can cooperate with the limiting part 50 by moving radially from the outside to the inside. The movement path is direct and short, making the layout of the clutch mechanism 5 more concise and efficient.

[0097] Furthermore, the limiting part 50 is located on the outer circumference of the transmission wheel 33, which means it bears the locking force at the maximum radius of the transmission wheel 33. According to the torque calculation formula T=F×r, under the same locking torque requirement, the larger the radius of the force-bearing point, the smaller the required force F. By placing the limiting part 50 on the outer circumference of the transmission wheel 33, the contact force between the locking tongue 512 and the limiting part 50 can be lower, reducing wear. In addition, since the external force acts on the outer circumference of the transmission wheel 33 rather than the interior near the center, the overall force on the transmission wheel 33 is more balanced, and the stress concentration is smaller.

[0098] In some embodiments of this application, the limiting part 50 includes limiting teeth provided on the outer peripheral wall of the transmission wheel 33; a plurality of limiting teeth are distributed circumferentially along the outer peripheral wall.

[0099] The locking tongue 512 is configured with a toothed structure, and the locking tongue 512 engages or disengages with the limiting teeth. When the clutch locking part 51 and the limiting part 50 are engaged, the locking tongue 512 engages with the limiting teeth, and the transmission wheel 33 is fixed. When the clutch locking part 51 and the limiting part 50 are disengaged, the locking tongue 512 disengages from the limiting teeth, and the transmission wheel 33 can rotate.

[0100] The above technical solution uses direct gear meshing to achieve locking. Gear meshing is a rigid surface contact connection, capable of transmitting large torques, and without relative slippage or sliding, resulting in high transmission efficiency. When the teeth separate, they completely disengage, leaving a physical gap, representing a complete separation. The transmission wheel 33 rotates with almost no additional resistance (only bearing friction remains).

[0101] In some embodiments of this application, the end face shape of the limiting tooth is non-rectangular. That is, in its axial projection, the limiting tooth has a non-rectangular profile. Alternatively, the end face shape of the limiting tooth with a non-rectangular profile can be trapezoidal, or triangular.

[0102] In the above technical solution, when the locking tongue 512 engages with the limiting tooth, since the end face of the limiting tooth with a non-rectangular profile has a sloping side, the force exerted by the limiting part 50 on the clutch locking part 51 has a radial component (first radial) along the transmission wheel 33.

[0103] In some embodiments of this application, when the locking tongue 512 engages with the limiting part 50, the thrust of the locking tongue 512 is denoted as the clutch thrust F. L Among them, F L The minimum external thrust required to maintain the locking tongue 512 and the limiting part 50 in the limited state is a set value provided by the first reset member 513, etc.

[0104] When the locking tongue 512 engages with the limiting part 50 and the drive mechanism 2 is in operation, the component of the force exerted by the limiting part 50 on the locking tongue 512 along the radial direction (first radial direction) of the transmission wheel 33 is denoted as F. F Among them, F F When the drive mechanism 2 (motor) is running normally, the radial force component generated on the working surface of the locking tongue 512 and the limiting part 50 due to the torque transmitted by the drive mechanism 2.

[0105] During the operation of the drive mechanism 2, when the transmission wheel 33 is subjected to an external force greater than the first preset value, the component of the force along the first radial direction exerted by the limiting part 50 on the locking tongue 512 is denoted as F. C Among them, F C This refers to the force generated on the mating surface of the latch 512 and the limiting part 50 when an overload occurs, which attempts to push the latch 512 radially open. Wherein, FF <F L <F C .

[0106] The above technical solutions, F F <F L This configuration ensures that during normal operation, the radial force component F generated on the working surfaces of the locking tongue 512 and the limiting part 50... F Less than the minimum force F required to maintain the bond L This makes it possible to rely solely on F F It is not sufficient to damage or weaken the limiting state, so that within the rated working range, the locking tongue 512 and the limiting part 50 can always be in the limiting state, ensuring that the transmission wheel 33 is fixed.

[0107] When an abnormal overload occurs, the reverse disengagement force F C Increased to a value greater than the preset clutch thrust F L At this time, the locking tongue 512 is forcibly pushed open. This achieves purely mechanical, high-repeatability overload protection. The force conditions for each disengagement are almost identical, ensuring consistent and reliable product safety performance.

[0108] In the above technical solutions, F L Greater than the maximum possible normal working load force F Fmax And less than the minimum overload force F required to trigger protection. Cmin F L Too low ( <F Fmax This leads to unstable bonding during normal operation. L Too high (close to or > F) Cmin This can lead to sluggish or even failed overload protection, or the need for a larger, uneconomical drive source. The above technical solutions achieve a balance between functionality, safety, and cost.

[0109] Please refer to some embodiments of this application. Figures 4-5 As shown, the locking block 511 defines a receiving cavity, and the locking tongue 512 is at least partially installed in the receiving cavity; the first reset member 513 is located in the receiving cavity. When the locking tongue 512 moves away from the first rotating shaft A relative to the limiting part 50, the locking tongue 512 moves into the receiving cavity and compresses the first reset member 513.

[0110] In the above technical solution, the locking block 511 is no longer just a simple force transmission component. Instead, it forms an internal cavity to integrate at least a part of the locking tongue 512 and the first reset component 513 inside the cavity. This integrates multiple components (locking block 511, locking tongue 512, and first reset component 513) into one unit, greatly saving axial and radial installation space and making the overall structure more compact and small.

[0111] Secondly, the inner wall of the receiving cavity forms a track for the locking tongue 512 to move along the first radial direction. The cavity wall guides the radial movement of the locking tongue 512, ensuring that the locking tongue 512 follows a precise path each time it retracts and resets, avoiding jamming or misalignment with the limiting part 50 due to shaking or deflection. At the same time, the inner wall of the receiving cavity also provides lateral constraint on the compression direction of the first reset member 513. The first reset member 513 is constrained within the receiving cavity and will not bend laterally during compression, ensuring that the first reset member 513 always works stably within the linear range and extending its fatigue life.

[0112] In addition, the locking tongue 512 moves into the receiving cavity during retraction, i.e., retracts into the cavity; the first reset member 513 is completely built in. The outer shell of the receiving cavity (the body of the locking block 511) encloses the part of the locking tongue 512 that moves into the receiving cavity and the reset member, effectively preventing dust, debris or moisture from the external environment from entering the moving parts, reducing the risk of wear and jamming.

[0113] Furthermore, the locking block 511, locking tongue 512, and first reset component 513 form a pre-assembled modular assembly. During manufacturing, the locking tongue 512 and first reset component 513 can be pre-installed into the receiving cavity of the locking block 511, forming an independent locking module. During final assembly, this module can be installed as a whole into its corresponding position, eliminating the need to install small parts individually in a confined space. This not only simplifies the assembly process and improves production efficiency but also ensures consistency between product batches.

[0114] Please refer to some embodiments of this application. Figures 2-5 As shown, the locking tongue 512 has a limiting position and a disengaging position distributed along a first radial direction; wherein, the disengaging position is located on the side of the limiting position away from the first rotating shaft A.

[0115] When the locking tongue 512 is in the limiting position, the locking tongue 512 cooperates with the limiting part 50, and the first reset member 513 is in the initial state. When the locking tongue 512 is in the disengaged position, the locking tongue 512 disengages from the limiting part 50, and the first reset member 513 is compressed.

[0116] The clutch mechanism 5 includes a position detection unit 54; the position detection unit 54 is used to detect whether the locking tongue 512 has reached the disengaged position.

[0117] In the above technical solution, when an overload causes the locking tongue 512 to be forced to retract to the disengaged position along the first radial direction, the position detection unit 54 immediately captures the status signal. The control system can detect abnormal overload events (such as impacts or obstruction) in the transmission wheel 33 in real time, rather than relying solely on indirect judgment based on changes in motor current. This direct position perception provides the system with more accurate and timely feedback on abnormal states.

[0118] Furthermore, since the compression state of the first reset member 513 corresponds to the position of the latch 512 (compressed when in the disengaged position, and in the initial state when in the limit position), detecting the position of the latch 512 is equivalent to indirectly monitoring the working state of the first reset member 513. If the system frequently detects signals that the latch 512 is in the disengaged position, it may indicate that the elasticity of the first reset member 513 has weakened or that the external resistance is abnormal, prompting the need for preventive maintenance. If the latch 512 remains stuck in the disengaged position for an extended period and cannot be reset (the position detection unit continuously sends a signal), the system can determine that the first reset member 513 may be broken or the latch 512 may be jammed, and will issue an alarm in a timely manner.

[0119] It should be noted that the limiting position and the disengagement position are distributed along a radial direction of the rotating member 31; the disengagement position is located on the side of the limiting position away from the first rotating shaft A. The difference between the disengagement position and the separation position is explained here in conjunction with the distribution of the separating position and the limiting position along the first rotating shaft A.

[0120] Please refer to some embodiments of this application. Figures 1-5 As shown, the automatic door opening and closing device 1 includes a base 6, and a locking block 511 is mounted on the base 6. The clutch mechanism 5 includes a second reset member 55; the second reset member 55 is located on the side of the locking block 511 closer to the base 6. When the pushing block 521 acts on the locking block 511, the locking block 511 moves along the first rotating shaft A towards the side closer to the base 6, and the second reset member 55 is compressed.

[0121] In the above technical solution, after the clutch pusher 52 pushes the locking block 511 towards the base 6 (axial movement) to complete the locking action, the second reset member stores elastic potential energy. Once the force of the clutch pusher 52 is released, the compressed second reset member 55 releases the stored elastic potential energy, pushing the locking block 511 axially away from the base 6 (i.e., reverse reset). After completing one locking trigger, the locking block 511 automatically returns to its initial position without additional power or manual intervention. This ensures that the device can cyclically execute the push-lock-reset standby action sequence, providing a basis for realizing periodic or repetitive locking operations.

[0122] Secondly, the second reset member 55 is located between the locking block 511 and the base 6. As the locking block 511 moves towards the base 6, the second reset member 55 is gradually compressed, generating a gradually increasing reverse resistance. When the clutch push part 52 pushes the locking block 511, the compression process of the second reset member 55 absorbs the impact kinetic energy of the push end, avoiding a hard collision between the locking block 511 and the base 6, and reducing motion noise and mechanical wear. The state when the second reset member 55 is fully compressed naturally forms the physical endpoint of the movement of the locking block 511 along the axial direction (first rotating shaft A), providing a soft limit for the movement range of the locking block 511.

[0123] Furthermore, in conjunction with the first reset element 513, the automatic clutch door opening and closing device 1 can have two reset elements simultaneously. The first reset element 513 is responsible for the radial reset of the latch 512, and the second reset element 55 is responsible for the axial reset of the locking block 511. The reset functions in the two directions do not interfere with each other. The radial retraction of the latch 512 (overload protection) will not affect the state of the second reset element 55; the axial movement of the locking block 511 (normal triggering) will not interfere with the pre-tightening of the first reset element 513. This functional decoupling makes the mechanical action logic clearer: axial movement is handled by the second reset element 55 (return after locking triggering), and radial movement is handled by the first reset element 513 (return after overload), facilitating design, debugging, and maintenance.

[0124] Please refer to some embodiments of this application. Figures 6-7 As shown, the automatic clutch door opening and closing device 1 includes a guide section; the guide section is disposed on the base 6 and cooperates with the locking block 511 to allow the locking block 511 to move along the first rotating shaft A. In this technical solution, the guide section provides a stable guide track for the axial movement of the locking block 511, preventing it from swaying or jamming during movement, ensuring that the movement trajectory of the locking block 511 is strictly along the direction of the first rotating shaft A, and the clutch stroke is precisely controllable. Furthermore, the guide section ensures that the locking block 511 can only move along the first rotating shaft A, thus keeping the position of the locking block 511 unchanged along the first radial direction. This effectively prevents the force from being transmitted to the clutch pusher 52 when the transmission wheel 33 is impacted and the locking tongue 512 retracts under force, thus avoiding damage to the clutch pusher 52.

[0125] And / or, the automatic clutch door opening and closing device 1 includes a guide section; the guide section is disposed on the base 6 and cooperates with the push block 521 so that the push block 521 can move along a first radial direction. In the above technical solution, the guide section ensures the accuracy of the movement of the push block 521 itself, making the mapping relationship between the stroke of the push block 521 and the axial displacement of the locking block 511 stable and predictable, thus guaranteeing the accuracy of displacement conversion.

[0126] The above technical solution constrains the axial movement path of the locking block 511 through the guide portion and the radial movement path of the pushing block 521 through the guide portion. The guide portion ensures that the locking block 511 does not rotate around its axis or wobble radially during axial reciprocating motion, ensuring that the locking tongue 512 is always aligned with the correct position of the limiting portion 50. The guide portion ensures that the pushing block 521 does not deviate axially during radial movement, ensuring that its force is precisely applied to the correct force point of the locking block 511. The movement in both directions is precisely constrained, making the transition from radial pushing to axial locking more accurate and reliable, avoiding jamming or locking failure caused by movement deviation.

[0127] Please refer to some embodiments of this application. Figures 6-7As shown, the guide portion includes a guide groove 60 extending along the first rotating shaft A; the clutch locking portion 51 includes a guide bar 514 disposed on the locking block 511. The guide bar 514 is installed in the guide groove 60 so that the locking block 511 can move along the first rotating shaft A.

[0128] Alternatively, the guide portion includes a guide bar 514 extending along the first pivot A; the locking block 511 includes a guide groove 60 disposed on the locking block 511. The guide bar 514 is installed in the guide groove 60 so that the locking block 511 can move along the first pivot A.

[0129] In the above technical solution, the guide groove 60 cooperates with the guide bar 514, allowing the locking block 511 to move only along the first rotating shaft A. The guide portion ensures that the locking block 511 can only move along the first rotating shaft A, thus keeping the locking block 511 in a constant position along the first radial direction. This effectively prevents the locking tongue 512 from transmitting force to the clutch push part 52 when it retracts under force after being impacted by the transmission wheel 33, thus avoiding damage to the clutch push part 52.

[0130] In some embodiments of this application, the guide portion includes a receiving cavity formed on the base 6. At least a portion of the locking block 511 is received within the guide portion, and the second reset member 55 is located within the guide portion; one end of the second reset member 55 is connected to the locking block 511, and the other end is connected to the bottom wall of the receiving cavity.

[0131] In the above technical solution, the inner wall of the guide portion (receiving cavity) provides a precise and stable guide track for the axial movement of the locking block 511, ensuring that the locking block 511 can only move along the first rotating shaft A. When the locking block 511 compresses the second reset member 55 to provide engagement preload, this force forms a closed and rigid force flow path through the locking block 511 → second reset member 55 → bottom wall of the guide portion → base 6, ensuring that the preload is stably and effectively applied to the system without causing local deformation or energy loss, thereby ensuring the absolute stability of the clutch engagement state. In addition, the above guide portion ensures that the locking block 511 can only move along the first rotating shaft A, thus keeping the position of the locking block 511 unchanged in the radial direction (first radial direction) along the transmission wheel 33. This effectively prevents the locking tongue 512 from transmitting force to the clutch push part 52 when the transmission wheel 33 is impacted, thus avoiding damage to the clutch push part 52.

[0132] In some embodiments of this application, the guide portion includes a guide groove 61; the push block 521 is provided with a guide strip 523; the guide strip 523 is installed in the guide groove 61 so that the push block 521 moves along the guide groove 61.

[0133] Alternatively, the guide section includes a guide bar 523; the push block 521 is provided with a guide groove 61; the guide bar 523 is installed in the guide groove 61 so that the push block 521 moves along the guide groove 61.

[0134] In the above technical solution, the guide strip 523 is embedded in the guide groove 61, which provides rigid constraint in a plane perpendicular to the direction of movement, completely eliminating the possibility of radial swaying, deflection or torsion of the push block 521, and ensuring that the movement of the push block 521 is a translation strictly along the preset trajectory.

[0135] In some embodiments of this application, the guide / guiding part is disposed on the base 6.

[0136] In the above technical solutions, the precise coordination and guiding function of the clutch mechanism 5 are undertaken by an independent base 6, which facilitates the modular design of the automatic clutch door opening and closing device 1 and also facilitates the application of the automatic clutch door opening and closing device 1 in different products.

[0137] Please refer to some embodiments of this application. Figures 4-5 As shown, the clutch locking part 51 includes a first guide surface 515, which is located on the side of the locking block 511 near the clutch pushing part 52. The clutch pushing part 52 includes a pushing block 521, which is movable relative to the locking block 511 along a first radial direction. The clutch pushing part 52 also includes a second guide surface 522, which is located at the end of the pushing block 521 near the first guide surface 515. As the pushing block 521 moves along the first radial direction, the first guide surface 515 and the second guide surface 522 interact, causing the pushing block 521 to move the locking block 511 along the first rotating axis A, thereby separating or engaging the locking block 511 with the limiting part 50.

[0138] The above technical solution converts the radial motion of the pushing block 521 into the axial motion of the locking block 511 through the sliding engagement of the first guide surface 515 and the second guide surface 522. The first guide surface 515 and the second guide surface 522 serve as direct contact transmission components, avoiding the use of intermediate transmission components such as connecting rods, gears, and ropes. This not only simplifies the transmission chain and reduces the number of parts, but also eliminates potential gaps, friction, and failure points introduced by intermediate links, making the transmission of force and motion more direct and reliable.

[0139] Furthermore, the first guide surface 515 and the second guide surface 522 are typically in surface contact (rather than point or line contact), distributing the force over a specific area. Surface contact reduces the contact stress per unit area, decreases the wear rate of the guide surfaces, and extends the service life of the component. Simultaneously, the dispersed contact stress also reduces the risk of material yielding or failure due to localized overload.

[0140] Furthermore, the first guide surface 515 and the second guide surface 522 have a certain contact area, allowing for effective force transmission even with manufacturing errors or assembly deviations, through adjustment of the contact area. This tolerance reduces the stringent requirements on part machining and assembly accuracy, improving product manufacturing yield and assembly efficiency. Simultaneously, even with slight wear on the first guide surface 515 and / or the second guide surface 522 during long-term use, contact can still be maintained, and the function will not immediately fail.

[0141] In some embodiments of this application, the drive wheel 33 and the locking block 511 are mounted on the base 6.

[0142] Locking block 511 includes a first end near the first rotating shaft A and a second end away from the first rotating shaft A; wherein the first end and the second end are distributed along a first radial direction. Pushing block 521 is located on the side of locking block 511 away from the first rotating shaft A; wherein pushing block 521 and locking block 511 are distributed along a first radial direction.

[0143] A plane perpendicular to the first pivot A and located on the side of the base 6 away from the locking block 511 is denoted as the first reference surface; wherein, along the direction from the first end to the second end, the distance between the first guide surface 515 and the first reference surface increases, and the distance between the second guide surface 522 and the first reference surface increases.

[0144] In the above technical solution, the distances between the first guide surface 515 and the second guide surface 522 and the first reference surface increase synchronously in the same direction (radially outward), indicating that the first guide surface 515 and the second guide surface 522 have a consistent tilting trend. This consistency ensures that the first guide surface 515 and the second guide surface 522 maintain a good contact relationship throughout the entire process of the radial movement of the pushing block 521. The directional relationship of the motion conversion is clear and matched, making the conversion from radial motion to axial motion smooth and efficient.

[0145] In some embodiments of this application, the clutch mechanism 5 includes a clutch drive unit 53; the clutch drive unit 53 is used to provide power to the clutch push unit 52 to drive the clutch push unit 52 to move relative to the clutch locking unit 51. Alternatively, the clutch drive unit 53 may be configured as an electromagnetic actuator to provide power to the clutch push unit 52 via electromagnetic control.

[0146] In the above technical solutions, the clutch mechanism 5 has a dedicated clutch drive unit 53, and the switching of clutch state can be carried out at any time and actively according to program instructions, sensor signals or user intentions, laying the foundation for realizing a variety of intelligent functions.

[0147] In the above technical solution, the dedicated clutch drive unit 53 (such as a micro stepper motor, servo motor, or proportional electromagnet) can perform precise closed-loop control of the movement speed, position, and force of the push block 521. During the transition of the clutch mechanism 5 from the disengaged state to the limit state, the clutch drive unit 53 controls the speed and force of the engagement action, ensuring it is performed in a relatively slow, smooth, and controlled manner, avoiding instantaneous rigid collisions. During the transition of the clutch mechanism 5 from the limit state to the disengaged state, the initial disengagement action is controlled to smoothly release the engagement locking force, avoiding bouncing, vibration, or noise caused by sudden release of stored energy (such as the second reset member 55). These features optimize operational noise and impact, and through monitoring the drive current or position, online diagnosis of the clutch mechanism 5's own health status (such as wear or jamming) can be achieved.

[0148] Specifically, the clutch drive unit 53 is used to drive the clutch push unit 52 to move, so that the clutch lock unit 51 cooperates with the limit unit 50, the transmission wheel 33 is in a fixed state, and the drive mechanism 2 can drive the revolving door mechanism 4 to move through the sun gear 30, planetary gear 32 and rotating member 31, so that the driven member (door body) connected to the revolving door mechanism 4 rotates.

[0149] The clutch drive unit 53 is used to move the clutch push unit 52, so that the clutch lock unit 51 is separated from the limit unit 50, and the transmission wheel 33 is in a rotatable state. It drives the rotating member 31 and the planetary gear 32 to rotate around the sun gear 30 through the turntable mechanism 4, so that the driven member (door body) connected to the turntable mechanism 4 rotates.

[0150] Please refer to some embodiments of this application. Figure 1 , Figures 8-9 As shown, the clutch-operated automatic door opening and closing device 1 includes a rotating door mechanism 4, which is used to transmit power from the clutch-operated automatic door opening and closing device 1 to the outside of the clutch-operated automatic door opening and closing device 1. The transmission wheel 33 includes an internal toothed portion 34 disposed in its inner circumferential direction.

[0151] The transmission mechanism 3 includes a sun gear 30, which is connected to the drive mechanism 2. The transmission mechanism 3 also includes a rotating member 31, which is connected to the revolving door mechanism 4. Furthermore, the transmission mechanism 3 includes planetary gears 32, which are rotatably mounted on the rotating member 31. The planetary gears 32 mesh with the sun gear 30 and with internal gears 34.

[0152] In the above technical solution, the sun gear 30 serves as the input end (connected to the drive mechanism 2), and the rotating component 31 serves as the output end (connected to the driven component (door body) via the rotary door mechanism 4). The internal gear 34 located in the circumferential direction of the transmission wheel 33 constitutes a planetary reduction mechanism. This structure can achieve a large transmission ratio in a compact space, converting the high-speed, low-torque of the drive mechanism 2 (such as a motor) into the low-speed, high-torque required for the rotation of the door body 102, so as to output sufficient torque to overcome the inertia of the driven component (door body) connected to the rotary door mechanism 4, the friction of the sealing strip, and possible external resistance, while keeping the size and cost of the drive motor within a reasonable range.

[0153] Secondly, the input shaft (sun gear 30) and output shaft (rotating element 31) of the planetary gear system are located on the same axis (i.e., the first rotating shaft). This coaxial layout allows the entire transmission mechanism 3 to transmit power in a very small radial space, without having to stagger the input and output shafts as in the parallel shaft gear system, resulting in a compact structure.

[0154] Furthermore, multiple planetary gears 32 are evenly distributed around the sun gear 30, simultaneously engaging in meshing transmission. Power is distributed across the multiple planetary gears 32, with each gear bearing only a portion of the total load. This not only reduces the tooth surface contact stress and bending stress of individual gears, extending gear life, but also enables the entire transmission system to withstand larger peak loads. Simultaneously, the symmetrical arrangement of the multiple planetary gears 32 counteracts radial forces, resulting in smoother transmission and reduced lateral impacts on the bearings.

[0155] Furthermore, the internal gear 34 is provided on the transmission wheel 33, so that the transmission wheel 33 simultaneously undertakes the dual functions of the internal gear ring of the planetary transmission and the locked component (via the limiting part 50) of the clutch mechanism 5, which simplifies the parts and saves space.

[0156] When the locking tongue 512 engages with the limiting part 50, the transmission wheel 33 is stopped (the internal gear part 34 is stationary); when the locking tongue 512 disengages, the transmission wheel 33 can rotate. Based on the principle of planetary gear trains, the state of the internal gear part 34 directly determines the output state:

[0157] When the internal gear 34 is fixed (limited position), the planetary gear system is a reduction transmission with the sun gear 30 as input and the rotating member 31 as output. Power can be normally transmitted to the external driven member (door body) connected to the revolving door mechanism 4. Specifically, when the internal gear 34 is fixed (limited position), the drive mechanism 2 transmits power to the sun gear 30. The sun gear 30 drives the planetary gear 32 to rotate. The planetary gear 32 revolves around the sun gear 30 while rotating on its own axis, so that the rotating member 31 rotates. The rotating member 31 drives the revolving door mechanism 4 to move, so that the driven member (door body) rotates through the revolving door mechanism 4.

[0158] When the internal gear 34 is free (in the separated state), the planetary gear train is unconstrained. When the sun gear 30 rotates, the planetary gear 32 will spin freely on the internal gear 34 and cannot drive the rotating component 31 to output power—achieving power cut-off. However, when an external force is applied to the driven component (door body) (manual opening or closing), the driven component (door body) drives the rotating component 31 to move through the door mechanism 4. The rotating component 31 drives the planetary gear 32 to revolve around the sun gear 30. The planetary gear 32 drives the transmission wheel 33 (internal gear 34) to revolve around the sun gear 30 through gear meshing, or the transmission wheel 33 (internal gear 34) remains stationary while the planetary gear 32 revolves around the sun gear 30, thereby increasing or decreasing the opening angle of the driven component (door body). This achieves the rotational separation of the drive mechanism 2 and the driven component (door body), disconnecting the transmission and allowing the driven component (door body) to rotate freely under external force without needing to drive the drive mechanism 2 to rotate synchronously.

[0159] The above technical solution, through the combination of planetary gear system and clutch mechanism 5, enables the automatic clutch door opening and closing device 1 to smoothly and reliably switch between electric and manual modes, balancing the convenience of automation with the reliability of mechanical operation. It also boasts comprehensive advantages such as compact structure, high transmission efficiency, long service life, and high safety. Furthermore, the above automatic clutch door opening and closing device 1 integrates drive, transmission, clutch, and door turning mechanism 4, allowing it to be assembled as an independent module. This facilitates assembly on the production line and after-sales maintenance and replacement, reducing maintenance costs.

[0160] Please refer to some embodiments of this application. Figure 9 As shown, the rotating member 31 has a connecting portion 312 extending radially therein; the revolving door mechanism 4 is rotatably connected to the rotating member 31 via the connecting portion 312. The revolving door mechanism 4 is connected to one end of the connecting portion 312 away from the rotation axis of the rotating member 31.

[0161] In the above technical solutions, torque (rotational force) is essentially the product of force and lever arm. The radially extending connecting part 312 directly provides the lever arm, enabling the rotational torque output by the rotating part 31 to be transmitted through the most direct and shortest path, reducing possible bending or torsional deformation in the middle.

[0162] In addition, the radially extending structure of the connecting part 312 usually has good torsional cross-sectional characteristics, which can effectively resist the reaction torque generated by the movement of the door body 102, reduce the elastic deformation in the transmission chain, improve the overall rigidity and transmission accuracy of the system, and enable the movement of the door body 102 to execute the motor command in a timely manner, reducing swaying or lag.

[0163] Please refer to some embodiments of this application. Figures 10-12As shown, a refrigeration device 100 is provided, which includes a housing 101 having a storage compartment, a door 102 connected to the housing 101 for opening and closing the storage compartment, and a refrigeration device for supplying cold air to the storage compartment. The housing 101 includes an inner liner defining the storage compartment, an outer shell connected to the outside of the inner liner to form the appearance of the refrigeration device 100, and a heat insulation layer disposed between the inner liner and the outer shell to insulate the storage compartment.

[0164] In some embodiments of this application, a retrieval opening is formed at the front end of the storage compartment to allow for placing stored items into or retrieving stored items from the storage compartment. For example... Figure 10 As shown, the door 102 is rotatably connected to the box 101 to open or close the access port of the storage compartment. The axis of rotation of the door 102 relative to the box 101 is denoted as the door 102 pivot.

[0165] The door 102 and the housing 101 are connected by a hinge assembly 103. The hinge assembly 103 includes a first hinge member connected to the housing 101; the hinge assembly 103 also includes a second hinge member connected to the door 102; the first hinge member and the second hinge member are rotatably connected so that the door 102 can rotate relative to the housing 101 about the pivot of the door 102, thereby opening or closing the access port.

[0166] Please refer to some embodiments of this application. Figures 11-12 As shown, the refrigeration equipment 100 includes the above-mentioned clutch automatic door opening and closing device 1. The clutch automatic door opening and closing device 1 enables the door 102 to rotate automatically relative to the cabinet 101 without the need for manual operation by the user, so as to realize the automatic control of the refrigeration equipment 100 on the opening or closing of the door 102.

[0167] As a configurable method, the clutch automatic door opening and closing device 1 is located on the top of the cabinet 101 of the refrigeration equipment 100, and its door mechanism 4 is connected to the door body 102.

[0168] The above technical solution includes a refrigeration equipment 100 equipped with an automatic door opening and closing device 1, enabling the automatic opening and / or closing of the door 102. Users can open and close the door without putting down items (such as food or beverages) while holding them, improving convenience. For people with mobility issues, the elderly, or children, automatic doors reduce the difficulty of opening and closing. In commercial settings (such as convenience stores and restaurants), automatic doors improve the operational efficiency of staff.

[0169] Secondly, when the door 102 is subjected to an external force greater than the first preset value (such as forced pulling, the door 102 being stuck by an obstacle, or a child climbing on it), the clutch mechanism 5 automatically disengages, the locking tongue 512 retracts radially, and the transmission wheel 33 is released, preventing the impact force from being transmitted in the reverse direction to the drive mechanism 2 and the transmission mechanism 3, thus avoiding motor burnout or gear breakage. The overload release function can reduce the risk of injury in case of child pinching or misoperation.

[0170] In addition, the locking block 511 remains stationary during overload, and the clutch push part 52 is not subjected to impact force. The clutch push part 52 (precision components such as electromagnets or push motors) is never subjected to external impact and is not easily damaged, ensuring that the automatic door opening and closing function of the refrigeration equipment 100 is reliable during its service life.

[0171] Furthermore, the refrigeration equipment 100, through the above-mentioned clutch automatic door opening and closing device 1, can smoothly and reliably switch between electric and manual modes, taking into account both the convenience of automation and the reliability of mechanical operation, while possessing comprehensive advantages such as compact structure, high transmission efficiency, long service life, and high safety.

[0172] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

[0173] For ease of explanation, the above description has been provided in conjunction with specific embodiments. However, the above exemplary discussion is not intended to be exhaustive or to limit the embodiments to the specific forms disclosed above. Various modifications and variations can be obtained based on the above teachings. The selection and description of the above embodiments are for the purpose of better explaining the principles and practical applications, thereby enabling those skilled in the art to better utilize the described embodiments and various different variations of embodiments suitable for specific use considerations.

Claims

1. An automatic door opening and closing device with clutch, characterized in that, include: Base; Drive mechanism, used to output power; A transmission mechanism for transmitting power from the drive mechanism; The transmission mechanism includes: A transmission wheel that can rotate about a first axis; one radial direction of the transmission wheel is denoted as the first radial direction. Clutch mechanism, which includes: A limiting part is provided on the transmission wheel; The clutch locking part includes: A locking block that can reciprocate along the first rotating shaft; the locking block is mounted on the base; A locking tongue, which is connected to the locking block and is movable relative to the locking block along the first radial direction; The first reset component has one end connected to the locking tongue and the other end connected to the locking block; The second reset component is located on the side of the locking block closer to the base; A clutch actuator, which is movable along the first radial direction, is used to engage with the locking block; As the clutch pusher moves toward the first rotating shaft along the first radial direction, the clutch pusher acts on the locking block and drives the locking tongue to move along the first rotating shaft through the locking block. The second reset member is compressed, so that the locking tongue cooperates with the limiting part, the transmission wheel is stopped, and the locking tongue is located in the limiting position. When the clutch mechanism is in the disengaged state, the locking tongue separates from the limiting part, the transmission wheel can rotate, and the locking tongue is in the disengaged position; wherein, the disengaged position and the limiting position are distributed along the first rotating shaft; When the latch engages with the limiting part, and the transmission wheel is subjected to an external force greater than a first preset value, the limiting part acts on the latch, causing the latch to move away from the first rotating shaft along the first radial direction. The first reset member is compressed, the latch disengages from the limiting part, the transmission wheel can rotate, the lock block remains stationary, and the latch is in the disengaged position.

2. The automatic door opening and closing device according to claim 1, characterized in that, The limiting part includes limiting teeth provided on the outer peripheral wall of the transmission wheel; a plurality of the limiting teeth are distributed circumferentially along the outer peripheral wall; The locking tongue is configured with a toothed structure, and the locking tongue engages with or disengages from the limiting teeth.

3. The automatic door opening and closing device according to claim 1, characterized in that, The locking block defines a receiving cavity, and the locking tongue is at least partially installed within the receiving cavity; The first reset member is located within the receiving cavity; When the locking tongue moves away from the first rotating shaft relative to the limiting part, the locking tongue moves into the receiving cavity and compresses the first reset member.

4. The automatic clutch door opening and closing device according to claim 1, 2, or 3, characterized in that, The clutch mechanism includes a position detection unit; the position detection unit is used to detect whether the locking tongue has reached the disengaged position.

5. The automatic door opening and closing device according to claim 1, characterized in that, The automatic door opening and closing device includes a guide section; the guide section is disposed on the base and cooperates with the locking block so that the locking block can move along the first rotating shaft; And / or, the clutch automatic door opening and closing device includes a guide portion; the guide portion is disposed on the base and cooperates with the clutch push portion so that the clutch push portion can move along the first radial direction.

6. The automatic clutch door opening and closing device according to claim 1, 2, or 3, characterized in that, The clutch locking part includes: The first guide surface is located on the side of the locking block near the clutch push part; The clutch actuator includes: A push block that can move relative to the locking block along a first radial direction; The second guide surface is located at the end of the push block that is close to the first guide surface; The push block moves along the first radial direction, the first guide surface interacts with the second guide surface, and the push block drives the locking block to move along the first rotating axis so that the locking block separates from or engages with the limiting part.

7. The automatic door opening and closing device according to claim 6, characterized in that, The transmission wheel is mounted on the base; The locking block includes a first end near the first rotating shaft and a second end away from the first rotating shaft; The push block is located on the side of the locking block away from the first rotating shaft; A plane perpendicular to the first pivot and located on the base away from the locking block is designated as the first reference plane; Specifically, along the direction from the first end to the second end, the distance between the first guide surface and the first reference surface increases, and the distance between the second guide surface and the first reference surface also increases.

8. The automatic door opening and closing device with clutch according to claim 1, 2, 3, 5, or 7, characterized in that, The clutch-operated automatic door opening and closing device includes a rotating door mechanism, which is used to transmit the power of the clutch-operated automatic door opening and closing device to the outside of the clutch-operated automatic door opening and closing device; The transmission wheel includes an internal toothed portion disposed in its inner circumferential direction; The transmission mechanism includes: The sun gear is connected to the drive mechanism via a transmission connection; A rotating component, which is connected to the rotary door mechanism; Planetary gears, multiple planetary gears are rotatably mounted on the rotating member; The planetary gear meshes with the sun gear, and the planetary gear meshes with the internal gear.

9. A refrigeration device, characterized in that, Includes the clutch-operated automatic door opening and closing device as described in any one of claims 1-8.

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