Storage cabinet with automatic opening and closing door and clutch

Abstract

The present invention belongs to the field of smart home technology, and specifically relates to a storage cabinet and clutch with automatic opening and closing doors. The storage cabinet includes a cabinet body, at least one cabinet door hinged on the cabinet body, and an actuator that drives the cabinet door to rotate; the cabinet body has a storage space, and the cabinet door is set at the opening of the storage space to open and close the storage space; the actuator has a motor that provides power, a rotating output member that drives the cabinet door to rotate, and a reduction gear set with power connected between the motor and the rotating output member; the power output by the motor is transmitted to the downstream through a non-rigidly connected rotating transmission pair. The storage cabinet provided by the present invention has the advantages of convenient operation, silent operation, automatic and manual mode switching, diversified control, and excellent stability, which improves the user experience in the process of using the storage cabinet.

Description

Technical Field

[0001] The invention belongs to the technical field of wing fan opening and closing devices and refrigerators, and particularly relates to a storage cabinet with automatically opening and closing doors and a clutch. Background Art

[0002] With the continuous development of science and technology, people's demand for intelligent living is also increasing. Smart homes can provide a more convenient, comfortable and safe living experience. The popularity of the Internet and smartphones has made the control of smart home devices more convenient. At the same time, the continuous development of Internet of Things and artificial intelligence technologies has also provided more and more possibilities for the development of smart homes.

[0003] Storage cabinets are common in homes, including wardrobes, shoe cabinets, bookcases, bedside tables, coffee tables, TV cabinets, makeup cabinets, and kitchen cabinets. Automatically controlling the opening and closing of these cabinet doors is a key component of creating a smart home environment. Users can use a variety of control methods to open and close cabinet doors according to their needs, especially when their hands are occupied, providing a more convenient operating experience.

[0004] Since users develop the habit of manual operation after long-term use of non-intelligent lockers, it is necessary to consider both automatic and manual operation when designing intelligent lockers. In order to switch freely between automatic door opening and manual door opening, a feasible solution is to connect the clutch in series in the power transmission path that drives the locker door to open and close. Figure 1 As shown, the order from upstream to downstream may include a motor, a reduction gear set, a rotary output shaft and a cabinet door. Figure 2 As shown, it can include multiple reduction gears, with clutches connected in series between the reduction gears. The clutches control the on and off of power transmission, thereby achieving controllable switching between automatic mode and manual mode.

[0005] However, due to the presence of the clutch and some high-speed gears in the reduction gear train, the cabinet door produces noticeable noise when opening and closing, impacting the user experience. Furthermore, noise can easily create a poor impression of quality. Users tend to believe that noisy equipment is unstable, low-quality, and has a short lifespan, negatively impacting product trust and purchase intention. Summary of the Invention

[0006] In response to the above problems, the present invention provides a locker with automatically opening and closing doors and a clutch, which can significantly improve the noise generated when the locker door is opened and closed.

[0007] The storage cabinet with automatic opening and closing doors proposed in the present invention includes a cabinet body, at least one cabinet door hinged on the cabinet body, and an actuator for driving the cabinet door to rotate; the cabinet body is provided with a storage space, and the cabinet door is arranged at the opening of the storage space to open and close the storage space; the actuator has a motor for providing power, a rotating output member for driving the cabinet door to rotate, and a reduction gear set with power connected between the motor and the rotating output member; the power output by the motor is transmitted to the downstream through a non-rigidly connected rotating transmission pair, and the rotating transmission pair includes a first turntable and a second turntable arranged opposite to each other, a pair of notches are provided oppositely on the edge of the first turntable, and a torsion column corresponding to the notch is provided on the second turntable; the notch accommodates the torsion column and leaves a movable margin in both radial and circumferential directions.

[0008] Furthermore, in the above-mentioned locker with automatic opening and closing doors, the first turntable is made of a flexible material, selected from any one of rubber and silicone.

[0009] Furthermore, in the above-mentioned storage cabinet with automatic opening and closing doors, the actuator also includes a housing, the motor and the reduction gear set are accommodated in the housing, the rotary output member is rotationally connected to the housing; a flexible vibration damping pad is provided between the motor and the housing.

[0010] Furthermore, in the above-mentioned locker with automatic opening and closing doors, the shell is fixed to the bottom of the cabinet body, the rotary output member is columnar, and the bottom of the cabinet door has a socket matching the rotary output member, and the rotary output member is inserted into the socket.

[0011] Furthermore, in the above-mentioned locker with automatic opening and closing doors, the reduction gear set includes a worm driven to rotate by a motor and a worm wheel driven by the worm; the reduction ratio between the worm and the worm wheel is 9:1~99:1.

[0012] Furthermore, in the above-mentioned locker with automatic opening and closing doors, a worm bracket is fixed in the shell, the worm is rotatably arranged on the worm bracket, and the worm bracket maintains the distance between the rotation axis of the worm and the rotation axis of the worm wheel.

[0013] Furthermore, in the above-mentioned locker with automatic opening and closing doors, the worm gear bracket is made of a rigid metal material, selected from any one of carbon steel, alloy steel, stainless steel, copper, and aluminum.

[0014] Furthermore, in the above-mentioned storage cabinet with automatic opening and closing doors, an electrically controllable clutch is also connected in series in the reduction gear group; the clutch does not transmit power in the non-powered state, cutting off the linkage relationship between the rotation of the cabinet door and the rotation of the motor; the clutch transmits power in the powered state, establishing a linkage relationship between the rotation of the motor and the rotation of the cabinet door.

[0015] Furthermore, in the above-mentioned locker with automatic opening and closing doors, the speed ratio of the clutch and the rotating output member is controlled within the range of 1.0 to 3.0.

[0016] The present invention also proposes an electrically controllable clutch, which includes an active ring and a driven plate arranged coaxially; the active ring is rotatably mounted on the outer circumference of the driven plate, and the inner side of the active ring has a circumferential first friction surface; the edge of the driven plate has at least one pair of second friction surfaces; each second friction surface is opposite to the adjacent first friction surface, forming a receiving groove between the two; each receiving groove has at least one end that is wedge-shaped, which is recorded as a groove tip; the clutch also includes a slider that can slide relative to the driven plate, rollers arranged at both ends of the slider and an electrically controlled drive device that drives the slider to slide; the rollers at both ends of the slider are each accommodated in an accommodating groove; when power connection is required between the active ring and the driven plate, the driving slider slides to drive the roller to be stuck in the groove tip of the accommodating groove, and when power separation is required between the active ring and the driven plate, the driving slider slides to drive the roller to disengage from the groove tip of the accommodating groove.

[0017] Beneficial effects

[0018] The locker provided by the present invention has the advantages of convenient operation, silent operation, automatic and manual mode switching, diversified control, excellent stability, etc., which improves the user experience during use of the locker.

[0019] The actuator provided by the present invention can smoothly switch between power connection and power separation states, has low noise, high torque, and occupies a small space. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 Schematic diagram of the power transmission path of the locker.

[0021] Figure 2 Schematic diagram of the power transmission path of the reduction gear set.

[0022] Figure 3 and Figure 4 This is a structural diagram of a locker.

[0023] Figure 5 and Figure 6 Schematic diagram of the actuator structure.

[0024] Figure 7 Schematic diagram of the transmission mechanism in the actuator.

[0025] Figure 8 Schematic diagram of the electrical control method of the locker.

[0026] Figure 9 、 Figure 10 、 Figure 11 Schematic diagram of the clutch structure.

[0027] Figure 12 for Figure 11 A partial enlarged view of .

[0028] Figure 13 Schematic diagram of the position of the roller when the clutch power is released.

[0029] Figure 14 Schematic diagram of the position of the roller when the clutch power is connected.

[0030] Figure 15 、 Figure 16 This is a structural diagram of the slider.

[0031] Figure 17 Schematic diagram of the structure of the driven disk.

[0032] Figure 18 Schematic diagram of the structure from motor to worm gear.

[0033] Figure 19 It is a structural diagram of the rotating transmission pair.

[0034] Figure 20 Schematic diagram of the structure of the rotating output component from the clutch to the worm gear. DETAILED DESCRIPTION

[0035] The present invention is further illustrated by the following examples, which are intended to more clearly illustrate the technical solutions of the present invention and should not be construed as limiting the present invention.

[0036] like Figure 3 、 Figure 4 The storage cabinet shown has an automatic opening and closing door, including a cabinet body 91, at least one cabinet door 92 hinged on the cabinet body 91, and an actuator for driving the cabinet door 92 to rotate; the cabinet body 91 has a storage space, and the cabinet door 92 is arranged at the opening of the storage space to open and close the storage space.

[0037] Actuator such as Figure 4 As shown in Z1~Z5 in FIG, it is set at the bottom of the cabinet 91 and is used to drive the cabinet door 92 to rotate. The structure of the actuator is as follows Figure 5 and Figure 6 As shown, it includes a housing 1, a motor 2 arranged in the housing 1, a rotary output member 3 rotatably connected to the housing 1, and a reduction gear set that is dynamically connected between the motor 2 and the rotary output member 3. Among them, the housing 1 provides external protection and a fixed position for other components, protecting the internal mechanical and electronic components from the influence of the external environment. The motor 2 is the power source of the actuator, generating a mechanical driving force to drive the downstream components to move. The rotary output member 3 is used to adapt to and output power to the downstream components, and apply the mechanical driving force to the cabinet door 92 to rotate it to open and close. For example, the rotary output member 3 is set to a columnar shape with a D-shaped, waist-shaped or other cross-section, and the bottom of the cabinet door 92 has a socket that matches the rotary output member 3, and the rotary output member 3 is inserted into the socket. An electrically controllable clutch 5 is also provided on the transmission path between the motor 2 and the rotary output member 3 to control the connection and disconnection of the power transmission path.

[0038] like Figure 7 As shown, from the perspective of the power transmission path, the clutch 5 is connected to the reduction gear set in series, becoming an intermediate node for transmitting power. The clutch 5 does not transmit power in the non-powered state, cutting off the linkage relationship between the rotation of the cabinet door 92 and the rotation of the motor 2; the clutch 5 transmits power in the powered state, establishing a linkage relationship between the rotation of the motor 2 and the rotation of the cabinet door 92. Since the clutch 5 can be switched in different states, the operation of the cabinet door 92 can be divided into automatic mode and manual mode. In automatic mode, the clutch 5 is in a power-connected state, and the rotation of the motor 2 can drive the rotating output member 3, thereby driving the cabinet door 92 to rotate; in manual mode, the clutch 5 is in a power-disconnected state, and the rotation of the cabinet door 92 drives the rotating output member 3 to rotate, but the rotation of the rotating output member 3 will not drive the motor 2 to rotate together, so the cabinet door 92 can rotate freely under less resistance.

[0039] For automatic intelligent control, the locker may further include a central control unit and an instruction receiving unit. The instruction receiving unit receives the operation instruction from the user, and the central control unit sends an execution instruction to the actuator according to the operation instruction to control the rotation of the cabinet door 92. Figure 8 As shown, the instruction receiving unit is a mobile terminal, a touch panel, a voice recognition device, etc. that is set on the locker or separated from the locker.

[0040] The control process will be described using a voice recognition device as an example. A smart speaker is installed in the application scenario. The user speaks commands such as "auto open" or "auto close" based on their intended operation. The smart speaker's microphone receives the user's voice, converts the analog voice signal received by the microphone into a digital signal, and transmits it to the central control unit. The central control unit uses a voice recognition algorithm to perform voice recognition and analysis. The text corresponding to the analyzed voice is compared with a preset command vocabulary to determine the type of user command and convert it into the corresponding operation instruction. If the "auto open" or "auto close" command is received, the central control unit controls the actuator to connect clutch 5 and supply power to motor 2, thereby automatically opening and closing the locker door 92. If the "auto open" or "auto close" command is not received, the central control unit does not control the actuator. Clutch 5 is disconnected due to lack of power, and the locker door 92 can be opened and closed manually. This operation is fully compatible with the manual operation of a standard locker and does not require any additional training or learning.

[0041] For users, the above-mentioned smart locker solution brings a very good experience. Through intelligent voice control and other methods, users can easily use commands to open and close the locker door 92 without manual operation.

[0042] When the user's hands are occupied, such as holding items such as plates or tools, the locker can be controlled by intelligent voice. The user can easily use commands to open and close the cabinet door 92 without having to temporarily put down the items to manually open the cabinet door 92, thereby improving the efficiency and convenience of daily life.

[0043] When the user needs to find a specific item stored in the locker, through intelligent voice control and other methods, the user can open all cabinet doors 92 at the same time with one command. This convenience greatly simplifies the user's operation steps. The user can browse and take out the required items at a glance without wasting time opening the cabinet doors 92 one by one to search, making the whole process faster and more efficient.

[0044] It should be understood that Figure 7 The reduction gear set shown is only one possible example. By adjusting the type, number, and connection relationship of the gears in the reduction gear set, the speed ratio between the motor 2 and the rotating output member 3, as well as the speed ratio between the clutch 5 and the rotating output member 3, can be adjusted. Preferably, the speed ratio between the clutch 5 and the rotating output member 3 is controlled within a range of 1.0 to 3.0, more preferably 1.0 to 2.0. This allows the clutch 5 to rotate at a very low speed in both manual and automatic modes. Even if the clutch 5's structural fit is not highly precise, no noticeable vibration or noise is generated at low speeds.

[0045] However, the low rotation speed of the clutch 5 means that it needs to bear a higher torque. The specific structure of the clutch 5 is introduced below.

[0046] like Figure 9 、 Figure 10 、 Figure 11 As shown, the clutch 5 comprises a coaxially arranged driving ring 51 and a driven plate 52. The driving ring 51 is rotatably mounted on the outer circumference of the driven plate 52, and the two can be connected by a sliding fit or by a rolling bearing. The driving ring 51 receives power from upstream, while the driven plate 52 provides power to downstream.

[0047] like Figure 12 As shown, the inner side of the active ring 51 has an inner surface formed circumferentially, which serves as the first friction surface 511. The edge of the driven plate 52 is symmetrically formed with recessed areas, the side surfaces of which form steps serving as second friction surfaces 521. Each second friction surface 521 faces the adjacent first friction surface 511, forming a receiving groove 522 therebetween. Each receiving groove 522 has at least one wedge-shaped end, designated as the groove tip. The clutch 5 also includes a slider 53 slidably connected to the driven plate 52, rollers 54 disposed at each end of the slider 53, and an electrically controlled drive device 55 for driving the slider 53. The rollers 54 at each end of the slider 53 are each received within a receiving groove 522.

[0048] like Figure 13 As shown, when the roller 54 is neither in contact with the first friction surface 511 nor with the second friction surface 521, there is no friction between the active ring 51 and the driven disk 52, and they can rotate independently. When a power connection is required between the motor 2 and the rotary output member 3, the driving slider 53 slides and drives the roller 54 to engage the groove tip of the receiving groove 522, forming a groove as shown in FIG. Figure 14 At this time, if the active ring 51 moves in the direction D relative to the driven disk 52, a large friction force will be generated between the active ring 51 and the roller 54. This friction force drives the roller 54 to move in the direction E, that is, to clamp the groove tip of the receiving groove 522, so that the active ring 51 can transmit power to the driven disk 52. When the power between the motor 2 and the rotary output member 3 needs to be separated, the driving slider 53 slides to drive the roller 54 to disengage from the groove tip of the receiving groove 522, that is, to return to the Figure 13 The status shown.

[0049] The structure of the clutch 5 can take into account smooth switching, low noise and high torque. The clutch 5 still realizes the connection and separation of power through friction rather than rigid mechanical connection. The change of power has a certain gradualness when the state is switched, so the switching is relatively smooth. The active ring 51 and the driven disk 52 in the clutch 5 have no axial movement when the power is switched, so the active ring 51 and the driven disk 52 can each rotate around the center with a high matching accuracy, reducing the noise caused by clearance. When the power is connected, the power of the roller 54 that is stuck in the groove tip comes from the drive of the active ring 51. In addition, the amplification effect of the wedge-shaped groove tip can generate much greater friction than the friction generated by the electromagnetic force driving the friction disk to press, so the torque that can be transmitted is relatively large.

[0050] like Figure 14 As shown, when roller 54 is engaged with the groove tip, both first friction surface 511 and second friction surface 521 are tangent to roller 54. The angle between first friction surface 511 and second friction surface 521 at the tangent point is ∠A, with a range of 6°≤∠A≤18°. This angle range represents an optimized solution verified through experimentation. The magnitude of ∠A is closely related to the clutch state transition. If ∠A is too small, switching from the power-connected state to the power-disconnected state requires overcoming significant resistance, resulting in sluggish switching. Especially when ∠A is less than 3°, the clutch may become stuck and unable to switch. If ∠A is too large, a smooth transition from the power-disconnected state to the power-connected state becomes difficult, resulting in occasional vibration and unusual noise. This phenomenon increases significantly in frequency when ∠A is greater than 40°, significantly impacting the user experience. Setting ∠A to 6°≤∠A≤18° ensures smooth switching in both directions.

[0051] As shown above, the second friction surfaces 521 are arranged symmetrically. That is, based on the circumference of the active ring 51, the tips of the two corresponding receiving grooves 522 formed on a pair of second friction surfaces 521 point in opposite directions. This allows the active ring 51 to transmit power to the driven disc 52, regardless of whether it moves in the D direction or the -D direction relative to the driven disc 52, as long as the clutch 5 is in a power connection state. Based on the above principle, multiple pairs of second friction surfaces 521 can theoretically be provided, with corresponding sliders 53. The schematic diagram only illustrates a single pair.

[0052] As mentioned above, notches 531 are provided at both ends of the slider 53 to accommodate the roller 54. Figure 15 、 Figure 16 As shown, a pair of opposing arcuate limiting plates 532 are provided at both ends of the slider 53, with a notch 531 formed between the arcuate limiting plates 532. The sidewalls of the roller 54 are partially covered by the arcuate limiting plates 532, with the uncovered area being referred to as the exposed area. When the roller 54 is engaged with the groove tip, the exposed area contacts the first friction surface 511 and the second friction surface 521. The arcuate limiting plates 532 apply a clamping force to the roller 54 from both sides, allowing the roller 54 to contact the first and second friction surfaces 511, 521 while remaining confined within the notch 531. This ensures both power transmission and stable and reliable switching between power connection and power disconnection.

[0053] Preferably, the material used to form the notch 531 on the slider 53 is an elastic material, such as rubber or silicone. These elastic materials also have a certain degree of damping. The notch 531 formed thereby clamps the roller 54, absorbing and reducing vibration and noise from the roller 54 when the roller 54 contacts and squeezes the first friction surface 511 and the second friction surface 521, thereby making the actuator quieter during operation. On the other hand, when the roller 54 moves toward the groove tip, the distance between the midpoint of the slider 53 and the roller 54 is not constant. The elastic notch 531 allows for adaptive position adjustment while maintaining the roller 54 in place, thus preventing excessive stress on the notch 531 during power switching, which can cause abnormal noise or cracking.

[0054] like Figure 11 、 Figure 12 As shown, a sink groove is provided on the driven disk 52, and an electric control driving device 55 is embedded in and fixed at one end of the sink groove. The electric control driving device 55 is an electromagnet. Figure 15 、 Figure 16As shown, the slider 53 has a magnetically attractable portion 533 in the form of a U-shaped armature. The armature is slidably received within the recessed groove and faces the electrically controlled drive unit 55. When the electrically controlled drive unit 55 is energized, it generates a magnetic field that attracts the magnetically attractable portion 533, thereby driving the slider 53 to slide. To ensure smooth sliding of the slider 53, the inner walls and bottom surfaces of the recessed groove are smooth, as are the outer walls and bottom surfaces of the armature. The recessed groove and the armature have a clearance fit, and grease is applied to the gap.

[0055] like Figure 15 、 Figure 16 As shown, the slider 53 is formed by combining two parts, wherein the armature is a rigid material and the rest is a non-rigid material such as rubber or silicone, and the two parts are bonded together with an adhesive. The non-rigid material includes both the part used to form the notch 531 and the part covering the surface of the armature.

[0056] like Figure 11 、 Figure 12 As shown, the clutch 5 further includes an elastic return element 56 acting on the slider 53. This elastic return element 56 is a pair of compression springs disposed between the slider 53 and the electronically controlled drive device 55. Specifically, a pair of spring-receiving holes are defined in the armature of the slider 53. One end of the compression spring is disposed in the spring-receiving hole, while the other end presses against the end surface of the electronically controlled drive device 55. In this way, the elastic return element 56 applies a spring force to the slider 53, pushing it away from the electronically controlled drive device 55. This spring force can reset the slider 53 after it has been attracted.

[0057] like Figure 11 、 Figure 12 As shown, the driven disk 52 has a stopper 523, and the stopper 523 and the electric drive device 55 are respectively located on both sides of the slider 53. When the electric drive device 55 is not in operation, the elastic reset element 56 applies a force to the slider 53, causing the slider 53 to contact the stopper 523.

[0058] As mentioned above, part of the surface of the armature in the slider 53 is covered with non-rigid material, especially the end of the armature is also covered with non-rigid material, forming a Figure 16 The buffer layer 534 shown in FIG. The stopper 523 is as shown in FIG. Figure 17 As shown, the side close to the electric control drive device 55 is a stop end surface 5231. The stop end surface 5231 conflicts with the buffer layer 534, limiting the extreme position of the slider 53, and also providing a buffer for the reset of the slider 53 to avoid noise and structural damage caused by rigid impact.

[0059] Furthermore, the position of the stopper end surface 5231 is controlled during design so that when the slider 53 contacts the stopper 523, the roller 54 does not contact the first friction surface 511. This allows a gap to remain between the active ring 51 and the roller 54 when the clutch is in the power-disengaged state, preventing friction or noise from occurring between them.

[0060] like Figure 10 、 Figure 11 As shown, the clutch 5 also includes a cover plate 57 fixed to one side of the driven disc 52. The cover plate 57 is secured using a set of countersunk bolts, with washers fitted over the countersunk bolts to maintain a suitable spacing between the cover plate 57 and the driven disc 52. A chamber is formed between the cover plate 57 and the driven disc 52 to accommodate the slider 53. The electrically controlled drive device 55 has at least two elastic contacts 551, which protrude from the cover plate 57. When the driven disc 52 rotates, each elastic contact 551 forms a rotational track, with a conductive slip ring 58 positioned on each rotational track. The number of elastic contacts 551 is determined based on the power supply requirements of the electrically controlled drive device 55. Different elastic contacts 551 are positioned on annular tracks of different diameters, and each conductive slip ring 58 is electrically connected to one elastic contact 551. By supplying power to the conductive slip ring 58, the state of the electrically controlled drive device 55 can be controlled, thereby controlling the sliding of the slider 53 and, consequently, the power connection state of the clutch 5. The guide slip ring 58 is fixedly arranged, for example, fixed to the inner side of the housing 1 by insert injection molding or adhesive bonding.

[0061] Figure 18 What is shown is the part of the reduction gear set near the upstream end, which includes a worm 41 driven to rotate by the motor 2 and a worm wheel 42 driven by the worm 41; a worm bracket 43 is also fixed in the housing 1, on which the worm 41 is rotatably arranged so as to mesh the worm 41 with the worm wheel 42. The worm bracket 43 maintains the distance between the rotation axis of the worm 41 and the rotation axis of the worm wheel 42, thereby maintaining a high meshing accuracy. Preferably, the worm bracket 43 is made of a metal material with greater rigidity, preferably any one of carbon steel, alloy steel, stainless steel, copper, and aluminum. Its end is rotationally connected to the rotation axis of the worm wheel 42. In order to prevent the worm bracket 43 from rotating, a pair of retaining ribs are formed on the inner wall of the housing 1 to clamp the worm bracket 43 within the retaining ribs.

[0062] Since motor 2 is at the upstream end, the speed of the output shaft of motor 2 is the highest in the entire transmission system. By adopting a worm support 43 with greater rigidity, the meshing of the worm 41 and the worm wheel 42 can always maintain a high degree of precision. High-precision meshing can effectively reduce noise and alleviate wear. On the other hand, the meshing transmission of the worm 41 and the worm wheel 42 can achieve a large reduction ratio, which can generally reach 9:1 to 99:1. Therefore, the matching worm 41 and worm wheel 42 arranged at the upstream end can significantly reduce the speed of each gear in the entire transmission process, thereby reducing noise overall.

[0063] The power output by the motor 2 is transmitted downstream through a non-rigidly connected rotary transmission pair. The rotary transmission pair is connected between the motor 2 and the worm 41. Figure 19 As shown, the rotary transmission pair includes a first rotating disk 441 and a second rotating disk 442 arranged opposite each other. A pair of notches 4411 are provided on the edge of the first rotating disk 441, and a torsion column 4421 is provided on the second rotating disk 442, which corresponds to the notches 4411. The notches 4411 accommodate the torsion column 4421 and leave room for movement in both the radial and circumferential directions. In addition, the first rotating disk 441 can be made of a flexible material such as rubber or silicone. The rotary transmission pair can be connected between the motor 2 and the worm 41 in two ways: the first rotating disk 441 is fixed to the worm 41 and the second rotating disk 442 is fixed to the motor 2, or the first rotating disk 441 is fixed to the motor 2 and the second rotating disk 442 is fixed to the worm 41.

[0064] Since the rotation speed of motor 2 is the highest in the entire transmission system, the above-mentioned setting of the rotary transmission pair can prevent the vibration caused by the high rotation speed of motor 2 from being directly transmitted to the reduction gear set, thereby reducing the noise of the reduction gear set caused by the vibration of motor 2. In addition, in the rotary transmission pair, the notch 4411 and the torsion column 4421 have a margin of movement in both the radial and circumferential directions. Such a transmission structure creates conditions for the vibration reduction of motor 2. Motor 2 does not need to be rigidly fixed in the housing 1. Instead, a relatively flexible vibration-damping pad is provided at the connection between motor 2 and housing 1. In this way, the vibration caused by the high-speed rotation of motor 2 will not be directly transmitted to housing 1, thereby reducing the noise generated by the vibration of housing 1.

[0065] like Figure 9 As shown, the driving ring 51 has a first gear ring portion 512 on its outer periphery to receive power from upstream, and the driven plate 52 has a second gear ring portion 524 to provide power to downstream. The number of teeth on the first gear ring portion 512 is greater than that on the second gear ring portion 524. In this way, the clutch 5 can serve as a transmission link, directly connected to the reduction gear set through meshing with other gears. Moreover, the clutch 5 in the power connection state also forms a first-stage reduction gear, making the transmission structure more compact and efficient.

[0066] Figure 20 The portion of the reduction gear train near the downstream end is shown. The outer periphery of the rotary output member 3 includes a third gear ring portion 31. The silent rotary actuator also includes a first transition gear 45, with which both the third gear ring portion 31 and the second gear ring portion 524 mesh. An angle sensor 6 is further provided to detect the rotation angle of the rotary output member 3 and provide a basis for automatic control. A second transition gear 46 is also meshed with the first transition gear 45. The angle sensor 6 is connected to the rotation shaft of the second transition gear 46 to detect its rotation angle. If space permits, the angle sensor 6 can also detect the rotation angle of the first transition gear 45, or even directly detect the rotation angle of the rotary output member 3.

[0067] The above embodiments are exemplary and intended to illustrate the technical concepts and features of the present invention so that those skilled in the art can understand the present invention and implement it accordingly. They are not intended to limit the scope of protection of the present invention. Any equivalent changes or modifications made in accordance with the spirit of the present invention are intended to be included within the scope of protection of the present invention.

Claims

1. A locker with automatic opening and closing doors, characterized by: The invention comprises a cabinet body (91), at least one cabinet door (92) hinged on the cabinet body (91), and an actuator for driving the cabinet door (92) to rotate; the cabinet body (91) has a storage space, and the cabinet door (92) is arranged at the opening of the storage space to open and close the storage space; the actuator comprises a motor (2) for providing power, a rotation output member (3) for driving the cabinet door (92) to rotate, and a reduction gear set connected between the motor (2) and the rotation output member (3); the power output by the motor (2) is transmitted downstream through a non-rigidly connected rotation transmission pair, the rotation transmission pair comprising a first turntable (441) and a second turntable (442) arranged opposite to each other, a pair of notches (4411) being oppositely provided on the edge of the first turntable (441), and a torsion column (4421) corresponding to the notches (4411) being provided on the second turntable (442); the notches (4411) accommodate the torsion column (4421) and leave a movable margin in both radial and circumferential directions; The reduction gear set is also connected in series with an electrically controllable clutch; the clutch does not transmit power in a non-powered state, cutting off the linkage relationship between the rotation of the cabinet door (92) and the rotation of the motor (2); the clutch transmits power in a powered state, establishing a linkage relationship between the rotation of the motor (2) and the rotation of the cabinet door (92); The clutch comprises a driving ring (51) and a driven disc (52) arranged coaxially; the driving ring (51) is rotatably sleeved on the outer periphery of the driven disc (52); the inner side of the driving ring (51) has a circumferential first friction surface (511); the edge of the driven disc (52) has at least one pair of second friction surfaces (521); each second friction surface (521) is opposite to the adjacent first friction surface (511), and a receiving groove (522) is formed between the two; each receiving groove (522) has at least one end in a wedge shape, which is recorded as a groove tip; the clutch also comprises a slider ( 53), rollers (54) arranged at both ends of the slider (53) and an electric control drive device (55) for driving the slider (53) to slide; the rollers (54) at both ends of the slider (53) are each accommodated in an accommodating groove (522); when power connection is required between the active ring (51) and the driven disk (52), the slider (53) is driven to slide and drive the rollers (54) to be clamped in the groove tip of the accommodating groove (522); when power separation is required between the active ring (51) and the driven disk (52), the slider (53) is driven to slide and drive the rollers (54) to be separated from the groove tip of the accommodating groove (522).

2. The locker with automatic opening and closing doors according to claim 1, characterized in that: The first turntable (441) is made of a flexible material, selected from any one of rubber and silicone.

3. The locker with automatic opening and closing doors according to claim 1, characterized in that: The actuator further comprises a housing (1), the motor (2) and the reduction gear set are accommodated in the housing (1), the rotary output member (3) is rotationally coupled with the housing (1), and a flexible vibration damping pad is provided between the motor (2) and the housing (1).

4. The locker with automatic opening and closing doors according to claim 3, characterized in that: The housing (1) is fixed to the bottom of the cabinet (91); the rotary output member (3) is columnar; the bottom of the cabinet door (92) has a socket matching the rotary output member (3); the rotary output member (3) is inserted into the socket.

5. The locker with automatic opening and closing doors according to claim 4, characterized in that: The reduction gear set comprises a worm (41) driven to rotate by the motor (2) and a worm wheel (42) driven by the worm (41); the reduction ratio between the worm (41) and the worm wheel (42) is 9:1 to 99:

1.

6. The locker with automatic opening and closing doors according to claim 5, characterized in that: A worm support (43) is also fixed in the housing (1), and the worm (41) is rotatably arranged on the worm support (43). The worm support (43) maintains the distance between the rotation axis of the worm (41) and the rotation axis of the worm wheel (42).

7. The locker with automatic opening and closing doors according to claim 6, characterized in that: The worm support (43) is made of a rigid metal material, selected from any one of carbon steel, alloy steel, stainless steel, copper, and aluminum.

8. The locker with automatic opening and closing doors according to claim 1, characterized in that: The speed ratio between the clutch and the rotating output member (3) is controlled within the range of 1.0 to 3.0.

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