CN117652798A - Intelligent storage cabinet, automatic drawer opening and closing and sliding rail actuator - Google Patents

Abstract

The invention belongs to the technical field of intelligent home and clutches, and particularly relates to an intelligent storage cabinet, an automatic drawer opening and closing and sliding rail actuator. The sliding rail actuator comprises a first rail body and a second rail body which are connected with each other in a sliding way, wherein the first rail body is provided with a driving tooth surface arranged along the sliding direction, and the second rail body is provided with a power cabin; the power cabin is internally provided with a motor and a reduction gear set which is connected between the motor and a driving tooth surface in a power way; a clutch is also arranged on the transmission path between the motor and the driving tooth surface. The sliding rail actuator provided by the invention can output the driving force of linear motion, has the advantages of space saving, smooth running, low noise, large driving force and the like, and has wide application prospects in intelligent household appliances and household products. The invention further provides an automatic drawer opening and closing device and an intelligent storage cabinet based on the sliding rail actuator.

Description

Intelligent storage cabinet, automatic drawer opening and closing and sliding rail actuator

Technical Field

The invention belongs to the technical field of intelligent home and clutches, and particularly relates to an intelligent storage cabinet, an automatic opening and closing drawer, a sliding rail actuator and an electric control clutch.

Background

In recent years, the demand for intelligent life has increased, and it is desired to realize a more convenient, comfortable and safe life experience by means of intelligent home products. Thanks to the wide application of the internet and smart phones, the control modes of smart home devices become increasingly simple and diversified. In addition, continuous breakthroughs of the Internet of things and artificial intelligence technology also provide more possibilities for the operation of intelligent home products.

In various household environments, storage cabinets with drawers are ubiquitous, such as wardrobes, bedside cabinets, cosmetic cabinets, tea table cabinets, television cabinets, kitchen ware cabinets and the like. The drawers of the storage cabinets are intelligently controlled, so that a user can select a convenient operation mode to open and close the drawer of the storage cabinet according to actual demands, for example, when hands are busy, the drawer is controlled to open and close through voice, and therefore more convenient and pleasant use experience is obtained.

In order to enable a user to obtain better use experience, the intelligent storage cabinet is designed to be compatible with the existing manual operation habit of the user by considering automatic operation and manual operation. For this reason, one possible solution is to adopt the automatically controlled power device to drive the drawer to slide, need to utilize the motor to drive the drawer to slide through drive gear group and clutch, wherein the clutch is established ties in the power transmission path, through the clutch state of control clutch, switches on or off of transmission path, corresponds to form automatic operation mode and manual operation mode that can switch each other.

However, the existing drawer driving device generally has the problems of large volume and high noise. The large-volume drawer driving device not only occupies the drawer storage space, but also easily causes irregular drawer storage space, reduces the storage efficiency, and simultaneously improves the difficulty of orderly placing large articles for users. The high noise not only affects the user's feeling of use, but also easily gives the user a bad impression of low quality and instability to the product.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides an intelligent storage cabinet, a sliding rail actuator and a clutch.

In the practice of the present invention, the inventors have found that the large size and noise of the drawer drive is a system problem that limits each other.

Limited by volume and power, the torque of the motor is generally insufficient to directly drive the drawer to slide, so the transmission gear set needs to be configured as a reduction gear set with a large reduction ratio, and the large reduction ratio can be realized by reducing and increasing the torque step by step through a plurality of reduction gears, thereby forming the transmission characteristics of high-speed low-torque at the power upstream end (motor end) and low-speed high-torque at the power downstream end.

In the aspect of clutch type selection, the mechanical clutch has obvious setbacks due to mechanical switching, and the electrified control is relatively complicated to realize, so that the mechanical clutch is less adopted. The switching of the electromagnetic clutch is smoother and naturally has the advantage of being suitable for electrical control. The main flow structure comprises a driving shaft and a driven shaft which are coaxially arranged, wherein friction discs are respectively fixed on the driving shaft and the driven shaft, and the relative movement of the two friction discs in the axial direction is controlled by generating magnetic force through an electrified electromagnetic coil so as to realize extrusion and separation of the two friction discs. When the electromagnetic coil is electrified, the generated magnetic force enables the two friction discs to be clung to each other, so that the driving shaft and the driven shaft are linked. When the electromagnetic coil is powered off, the two friction plates keep a certain distance, and the driving shaft and the driven shaft are not linked any more. Compared with mechanical switching, the switching mode is smoother, but the transmitted torque is generated by controlling the friction disc to squeeze through the electromagnetic coil, so that the torque which can be transmitted under the same volume is smaller.

If the electromagnetic clutch is arranged near the downstream end of the power, the electromagnetic clutch needs to adapt to the transmission characteristic of low speed and high torque at the downstream end, which means that a clutch with large volume and large torque needs to be selected, so that the drawer driving device has large volume, and especially the limitation of the size of the clutch makes the drawer driving device difficult to be made into a flat structure to reduce the volume and improve the regularity.

If the electromagnetic clutch is disposed near the power upstream end, the electromagnetic clutch needs to accommodate the high-speed low-torque transmission characteristics of the upstream end. Although electromagnetic clutch with relatively small volume can be selected in this case, the noise of the electromagnetic clutch is increased significantly during high-speed operation, and the user experience is affected. The electromagnetic clutch needs to be switched between a power connection state and a power disconnection state, and the transmission precision is lower than the conventional gear matching precision. There is a clearance between the driving shaft and the driven shaft of the clutch, and gears fixed on the driving shaft and the driven shaft have larger clearance compared with other gears, and the larger clearance causes larger relative position deviation and vibration generated when the gears transmit power, so that obvious noise can be generated under the condition of high rotating speed. In addition, the clutch is close to the upstream end, so that the number of gears to be driven is large and the rotating speed is high when the drawer is manually pushed and pulled, and larger resistance is caused for the drawer to be manually pushed and pulled.

The present invention proposes the following solution to the above-described problems.

The invention provides a sliding rail actuator, which comprises a first rail body and a second rail body which are connected with each other in a sliding way, wherein the first rail body is provided with a driving tooth surface arranged along the sliding direction, and the second rail body is provided with a power cabin; the power cabin is internally provided with a motor and a reduction gear set which is connected between the motor and a driving tooth surface in a power way; a clutch is also arranged on the transmission path between the motor and the driving tooth surface.

As an improvement of the slide rail actuator, the clutch comprises a power ring and a power disc which are coaxially arranged; the power ring is rotatably sleeved on the periphery of the power disc, and the inner side of the power ring is provided with a first circumferential friction surface; the edge of the power disc is provided with at least one pair of second friction surfaces; each second friction surface is opposite to the adjacent first friction surface, and a containing groove is formed between the second friction surfaces; each receiving slot has a wedge-shaped slot tip and an open end opposite the slot tip; the accommodating groove is internally provided with a rolling shaft and a first elastic element for driving the rolling shaft to move towards the open end; the power disc is provided with a propulsion element, and the propulsion element drives the roller to move towards the tip of the groove under the action of the second elastic element; the combined action of the first elastic element and the second elastic element determines the stress balance position of the roller, and the peripheral wall of the roller is not contacted with the first friction surface and the second friction surface at the same time when the roller is in the stress balance position; the power disc is also provided with an electric control driving device which can apply a third acting force to the propulsion element; under the drive of the third acting force, the pushing element drives the roller to deviate from the stress balance position, and the peripheral wall of the roller is contacted with the first friction surface and the second friction surface simultaneously.

As an improvement scheme of the slide rail actuator, the rotating speed of the motor and/or the reduction ratio of the reduction gear set are/is set, so that the rotating speed of the clutch is in the range of 0.5 r/s-3.5 r/s during normal operation.

As an improvement scheme of the slide rail actuator, an embedding hole is formed in the entity where the second friction surface is located, the first elastic element is a pressure spring, one end of the first elastic element is arranged in the embedding hole, and the other end of the first elastic element abuts against the rolling shaft.

As an improvement scheme of the slide rail actuator, the pushing element is slidably arranged on the power disc, the end part of the pushing element is provided with a concave area which is abutted against the roller, and the second elastic element is a pressure spring arranged on one side of the pushing element.

As a modification of the slide rail actuator, the power ring has a first ring gear portion on its outer periphery to receive power from upstream and a second ring gear portion on the power disc to provide power downstream.

As an improvement scheme of the slide rail actuator, the reduction gear set comprises a worm, a first driving wheel and a second driving wheel; the worm is arranged on an output shaft of the motor, the first driving wheel comprises a worm wheel meshed with the worm and a gear III coaxially and rigidly connected with the worm wheel, the second driving wheel comprises a gear IV meshed with the gear III and a gear V coaxially and rigidly connected with the gear IV, the gear V is meshed with the first gear ring part, and the second gear ring part is meshed with the driving tooth surface; the number of teeth of the worm gear is larger than that of the third gear, and the number of teeth of the fourth gear is larger than that of the fifth gear.

The invention also provides an automatic opening and closing drawer, which comprises a support frame, a drawer body sliding relative to the support frame and the sliding rail actuator; at least one side of the drawer body is provided with a sliding rail actuator; the second rail body is fixed with the drawer body and the first rail body is fixed with the support frame, or the first rail body is fixed with the drawer body and the second rail body is fixed with the support frame.

As an improvement scheme for automatically opening and closing the drawer, the second rail body is fixed with the drawer body, and the first rail body is fixed with the supporting frame; the power cabin is a flat cabin body, an inward sinking area matched with the power cabin is arranged on the outer side wall of the drawer body, and the power cabin is partially embedded into the inward sinking area.

The invention also provides an intelligent storage cabinet, which comprises a storage cabinet body and at least one automatic opening and closing drawer arranged in the storage cabinet body.

Furthermore, the clutch mentioned in the above-mentioned solution, as used alone or in more contexts, can also be structured with adjustments and improvements that are not passed, for example the following solutions.

As an improvement scheme of the clutch, the electric control driving device is an electromagnet fixed on the power disc; the propelling element is provided with a magnetic attraction part which is arranged opposite to the electric control driving device; the electric control driving device is electrified to generate a magnetic field to attract the magnetically attractable part to form a third acting force.

As a further development of the clutch, at least two of the groove tips of the receiving grooves are oppositely directed with reference to the circumferential direction of the power ring.

As an improvement scheme of the clutch, when the roller is clamped into the groove tip, the first friction surface and the second friction surface are tangential to the roller, and an included angle between the first friction surface at the tangent point and the second friction surface at the tangent point is less than or equal to A and more than or equal to 6 degrees and less than or equal to 18 degrees.

As an improvement of the clutch, the outer periphery of the power ring is provided with any one of a belt rim, a chain rim, a synchronous belt rim, a bevel gear rim, a worm rim, a convex rim, a friction rim, a ratchet wheel rim and a cycloid rim.

As an improvement of the clutch, the outer periphery of the power disc is provided with any one of a belt rim, a chain rim, a synchronous belt rim, a bevel gear rim, a worm rim, a convex rim, a friction rim, a ratchet wheel rim and a cycloid rim.

As an improvement scheme of the clutch, the power ring receives power from the upstream for the driving end, and the power disc transmits power to the downstream for the driven end; or the power disc receives power from the upstream for the driving end, and the power ring transmits power to the downstream for the driven end.

As a further development of the clutch, the clutch further comprises a cover plate fastened to one side of the power disc, a receiving chamber being formed between the cover plate and the power disc for receiving the propulsion element.

As an improvement of the clutch, the electric control driving device is provided with at least two elastic contacts, and the elastic contacts penetrate out from one side of the cover plate or one side far away from the cover plate; when the power disc rotates, each elastic contact forms a rotating track, and a guide slip ring is correspondingly arranged on each rotating track.

Advantageous effects

According to the storage cabinet, the drawer can be automatically opened and closed, so that the use convenience is improved, and particularly, when two hands are occupied, articles can be taken and placed more conveniently. The storage cabinet has various operation modes, a user can control through intelligent modes such as voice recognition and the like, and can manually push and pull the drawer, and the drawer operation mode of the storage cabinet is compatible with the operation mode of a traditional drawer. The drawer of the storage cabinet has large and regular internal storage space, good smoothness during operation, low noise and excellent use experience.

The sliding rail actuator provided by the invention can output the driving force of linear motion, has wide application prospects in intelligent household appliances and household products, and has the advantages of compact sliding rail structure, flat power cabin design, small internal volume, low rotating speed and large torque, space saving, smooth running, low noise, large driving force and the like.

The clutch provided by the invention has a compact integral structure, is easy to operate and control, can realize power connection and separation by virtue of roller friction and combines the amplifying effect of the groove tip, so that the smoothness and stability of power switching are also considered while large torque is transmitted.

Drawings

Fig. 1 is a schematic structural diagram of an intelligent storage cabinet.

Fig. 2 and 3 are schematic views of a structure for automatically opening and closing a drawer.

Fig. 4 and 5 are schematic structural views of the slide rail actuator.

Fig. 6 and 7 are schematic views of the internal structure of the power pod.

Fig. 8 and 9 are schematic structural views of the clutch.

Fig. 10 is an exploded view of the clutch.

Fig. 11 and 12 are schematic views of the internal structure of the clutch.

Fig. 13 is a partial schematic view of a roller snapped into a slot tip.

Detailed Description

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

An intelligent storage cabinet as shown in fig. 1 includes a storage cabinet body 93 and at least one automatically opening and closing drawer provided in the storage cabinet body 93.

The automatic opening and closing drawer includes a supporting frame 91 and a drawer body 92 sliding with respect to the supporting frame 91, as shown in fig. 2 and 3. The supporting frame 91 is a structure for sliding connection with the drawer body 92, and can be independently arranged in the storage cabinet body 93, or can be attached to the storage cabinet body 93 or integrated with the storage cabinet body 93. Drawer body 92 is generally open at the top, forming a storage space therein for storing items.

Unlike a normal manually drawn drawer, the automatically opening and closing drawer is also provided with a slide rail actuator on at least one side of the drawer body 92. The slide rail actuator is powered to drive the drawer body 92 to slide relative to the support frame 91, so that the drawer body 92 can be automatically opened and closed.

The slide actuator, as shown in fig. 4 and 5, includes a first rail body 11 and a second rail body 12 slidably connected to each other. As shown in fig. 3, the first rail 11 is fixed to the supporting frame 91, and the second rail 12 is fixed to the drawer body 92. The first rail 11 has a drive tooth surface 13 arranged in the sliding direction, and the drive tooth surface 13 may be directly formed on the first rail 11 or may be formed by fixing a rack to the first rail 11. A fixed seat is formed at one end of the second rail body 12, a power cabin 14 is installed on the fixed seat, and a driving gear is arranged in the power cabin 14 and is used for acting with a driving tooth surface 13 to drive the second rail body 12 to slide relative to the first rail body 11.

The internal structure of the power cabin 14 is as shown in fig. 6 and 7, and the power cabin 14 is internally provided with a motor 2 and a reduction gear set which is connected between the motor 2 and the driving tooth surface 13 in a power manner; a clutch 5 is also provided on the transmission path between the motor 2 and the drive tooth flank 13. Wherein, the motor 2 is used as a power source, and generates mechanical driving force under the condition of electrifying to drive the reduction gear set to move, and the reduction gear set acts with the driving tooth surface 13 to drive the drawer body 92 to move.

From the power transmission path, the clutch 5 is connected in series to the reduction gear set, and serves as an intermediate node for transmitting power. The clutch 5 does not transmit power in a non-power supply state, and the linkage relation between the driving tooth surface 13 and the motor 2 is cut off; the clutch 5 transmits power in a power supply state, and causes the drive tooth surface 13 to form a linked relationship with the motor 2. Thus, by controlling the clutch 5 to switch between different states, automatic opening and closing and manual opening and closing of the drawer can be realized. In the automatic mode, the clutch 5 is in a power connection state, and the motor 2 rotates to drive the drawer body 92; in the manual mode, the clutch 5 is in a power-off state, and the sliding of the drawer body 92 does not drive the motor 2 to rotate, so that the drawer body 92 can be manually pushed and pulled with smaller resistance.

In order to facilitate the control, the intelligent storage cabinet may further be configured with a central control unit and an instruction receiving unit, the instruction receiving unit receives an operation instruction from a user, and the central control unit sends an execution instruction to the slide rail executor according to the operation instruction, so as to control the opening and closing of the drawer body 92. The instruction receiving unit is a mobile terminal, a touch panel, a voice recognition device, or the like, which is provided on the storage cabinet body 93 or separately provided from the storage cabinet body 93.

One way of controlling the opening and closing of the drawer body 92 using a voice recognition device is exemplarily described below. The voice recognition device can be an intelligent sound box arranged in a use scene, and a user speaks instructions such as 'automatically opening a drawer', 'automatically closing the drawer', and the like according to operation intention. The microphone of the intelligent sound box receives the voice of the user, and converts the analog voice signal received by the microphone into a digital signal to be transmitted to the central control unit. The central control unit performs voice recognition and analysis through a voice recognition algorithm. Comparing the text corresponding to the analyzed voice with a preset command word stock, determining the instruction type sent by the user, and converting the instruction type into a corresponding operation instruction. When the command of 'automatically opening the drawer' or 'automatically closing the drawer' is received, the central control unit controls the slide rail actuator to put the clutch 5 in the power connection state and supply power to the motor 2, so as to drive the drawer body 92 to be opened and closed. When the instruction of automatically opening the drawer or automatically closing the drawer is not received, the central control unit does not control the slide rail actuator, and the clutch 5 is in a power separation state because power is not supplied, so that the drawer body 92 can be manually opened and closed. Thus, this mode of operation is compatible with the manual operation of drawers of conventional cabinets.

The intelligent storage cabinet provides a very good operation experience for users. The user can conveniently control the drawer of the storage cabinet to be automatically opened and closed in a voice control mode and the like; if the user does not send out a control instruction, the drawer of the storage cabinet can be freely pushed and pulled, and the drawer is consistent with the manual operation mode of the common drawer, and does not need to be additionally adapted.

As shown in fig. 2 to 5, the power pod 14, which is configured as a flat-shaped pod body, may be conditionally installed in the slit between the support frame 91 and the drawer body 92, avoiding a large intrusion into the accommodation space of the drawer body 92 and also avoiding a damage to the regularity of the accommodation space of the drawer body 92. Alternatively, an undercut region may be provided on the outer side wall of drawer body 92 that mates with nacelle 14 and nacelle 14 may be partially nested within the undercut region. Thus, the width of the slit between the supporting frame 91 and the drawer body 92 can be reduced, and the regularity of the accommodating space of the drawer body 92 is well reserved.

The nacelle 14 can be configured to be flat, and its internal structure needs to be flattened, and in particular, the clutch 5 needs to satisfy the structural characteristics of being flat and small in volume. In addition, low noise is also an important limiting factor to be considered in designing the internal structural arrangement of the nacelle 14.

The following describes the structure of the clutch 5, which is flat in shape, small in volume, smooth in switching, and capable of withstanding high torque, and is conditioned to operate at low rotational speeds and low noise.

As shown in fig. 8, 9, 10, the clutch 5 includes a power ring 51 and a power disc 52 coaxially arranged; the power ring 51 is rotatably sleeved on the outer periphery of the power disc 52, the power ring 51 can receive power from the upstream, and the power disc 52 can provide power to the downstream.

As shown in fig. 11 and 12, the inner side of the power ring 51 is formed with an inner surface in the circumferential direction, which is a first friction surface 511; the edge of the power disc 52 is symmetrically provided with a sinking area, and the side surface of the step formed by sinking is a second friction surface 521; each second friction surface 521 is opposite to the adjacent first friction surface 511, and a receiving groove 522 is formed therebetween; each receiving slot 522 has a wedge-shaped slot tip and an open end opposite the slot tip.

As shown in fig. 12, the accommodating groove 522 is provided therein with the roller 54 and the first elastic member 59 driving the roller 54 to move toward the open end; the power disc 52 is provided with a propelling element 53, and the propelling element 53 drives the roller 54 to move towards the groove tip under the action of the second elastic element 539; the combined action of the first elastic element 59 and the second elastic element 539 determines a force balance position of the roller 54 in which the peripheral wall of the roller 54 is not in contact with the first friction surface 511 and the second friction surface 521 at the same time.

The roller 54 is not clamped at the groove tip in the stress balance position, so that the first friction surface 511 can rotate relative to the second friction surface 521, that is, the power ring 51 and the power disc 52 can rotate independently. In this state, the clutch 5 is in a power-off state.

As shown in fig. 12, the power disc 52 is further provided with an electrically controlled driving device 55 capable of applying a third force to the propulsion element 53; driven by the third force, the pushing element 53 drives the roller 54 to deviate from the force balance position, and makes the peripheral wall of the roller 54 contact with the first friction surface 511 and the second friction surface 521 at the same time.

When the peripheral wall of the roller 54 is simultaneously in contact with the first friction surface 511 and the second friction surface 521, if the power ring 51 rotates relative to the power disc 52 in such a direction that the first friction surface 511 moves toward the tip of the groove, a large friction force is generated between the power ring 51 and the roller 54 and drives the roller 54 to be clamped toward the tip of the groove. At this time, the power ring 51 is allowed to transmit power to the power disc 52, that is, the clutch 5 is in a power connection state.

The clutch 5 is flat, small in size, smooth in switching, and capable of bearing a large torque. The clutch 5 is connected and disconnected by friction rather than by a rigid mechanical connection, and the power change during the state switching of the clutch state has a certain gradual change, so that the switching is smoother. The power ring 51 and the power disc 52 in the clutch 5 do not have axial play during power switching, so that the power ring 51 and the power disc 52 can rotate around the center with high matching precision, and noise caused by play is reduced. When power is input, the power of the roller 54 clamped into the groove tip is driven by the power ring 51, and the friction force generated by the power ring is far greater than the friction force generated by the electromagnetic force driving the friction disc to press, so that large torque can be transmitted.

As shown in fig. 11 and 12, the second friction surfaces 521 are symmetrically arranged, that is, if the directions of the groove tips of the two receiving grooves 522 formed correspondingly to the pair of second friction surfaces 521 are opposite as viewed with reference to the circumferential direction of the power ring 51. In this way, the power ring 51 rotates in any direction relative to the power disc 52, and as long as the pair of rollers 54 are engaged with the corresponding groove tips, the clutch 5 is in a power connection state, and the power ring 51 can transmit power to the power disc 52. Based on the above principle, the second friction surfaces 521 may also be theoretically provided in a plurality of pairs.

As shown in fig. 11 and 12, the entity of the second friction surface 521 is provided with an insertion hole, the first elastic element 59 is a compression spring, one end of the first elastic element 59 is disposed in the insertion hole, and the other end of the first elastic element 59 abuts against the roller 54. The pushing element 53 is a metal sheet and is slidably disposed on a pair of guide posts. The end of the pushing element 53 has a concave area abutting against the roller 54, and the second elastic element 539 is a compression spring arranged on one side of the pushing element 53.

As shown in fig. 12, the electrically controlled driving device 55 is an electromagnet fixed on the power disc 52; a pair of magnetically attractable portions 533, preferably armatures, are mounted on the propulsion element 53, the magnetically attractable portions 533 being disposed opposite the electrically controlled drive device 55; the electric control driving device 55 is electrified to generate a magnetic field to attract the magnetically attractable portion 533 to form a third acting force. The magnetically attractable portion 533 is preferably fixed to the pushing element 53, and the magnetically attractable portion 533 is also slidably sleeved on the guide post, so as to improve stability of the pushing element 53 during sliding.

As shown in fig. 13, when the roller 54 is clamped into the groove tip, the first friction surface 511 and the second friction surface 521 are tangential to the roller 54, and the angle between the first friction surface 511 at the tangent point and the second friction surface 521 at the tangent point is +.a, 6+.a.ltoreq.18 °. The included angle range is an optimized scheme verified through experiments, and the magnitude of the angle A is closely related to the conversion of the clutch state. When the angle A is too small, the power connection state is switched to the power separation state, so that larger resistance is needed to be overcome, the switching is slow, and especially when the angle A is less than 3 degrees, the switching is easy to be blocked and cannot be switched. When the angle A is too large, smooth switching from a power separation state to a power connection state is difficult to ensure, sporadic vibration and abnormal sound exist, and particularly when the angle A is more than 40 degrees, the frequency of the phenomenon is greatly increased, so that experience is seriously affected. The size of the angle A is set to be 6 degrees or more and 18 degrees or less, so that the bidirectional switching can be smoothly and stably carried out.

As shown in fig. 8, 9 and 10, the clutch 5 further includes a cover plate 57 fixed to one side of the power disc 52, and a receiving chamber for receiving the propelling element 53 is formed between the cover plate 57 and the power disc 52.

As described above, the electrically controlled driving device 55 is an electromagnet, which has a plurality of elastic contacts 551 led out, and the number of elastic contacts 551 is usually two. The spring contact 551 extends from a side remote from the cover 57 (or may extend from a side of the cover 57). When the power disc 52 rotates, each elastic contact 551 forms a rotation track, and a guiding slip ring 58 is correspondingly arranged on each rotation track. By supplying power to the slip ring 58, the state of the electrically controlled driving device 55 can be controlled, thereby controlling the third acting force and further realizing the control of the power connection state of the clutch 5. The guide slip ring 58 is fixedly arranged, for example, by insert molding or adhesive bonding, in the power compartment 14.

As shown in fig. 8 and 9, the power ring 51 has a first ring gear portion 512 on its outer periphery to receive power from upstream and a second ring gear portion 524 on the power disc 52 to provide power downstream.

As shown in fig. 6 and 7, the reduction gear set includes a worm 41, a first transmission wheel, a second transmission wheel; the worm 41 is arranged on the output shaft of the motor 2, the first driving wheel comprises a worm wheel 42 meshed with the worm 41 and a gear III 43 coaxially and rigidly connected with the worm wheel 42, the second driving wheel comprises a gear IV 44 meshed with the gear III 43 and a gear V45 coaxially and rigidly connected with the gear IV 44, and the gear V45 is meshed with the first gear ring part 512; the number of teeth of the worm gear 42 is greater than the number of teeth of the third gear 43, and the number of teeth of the fourth gear 44 is greater than the number of teeth of the fifth gear 45.

It should be understood that the gear set structure described above is a preferred example, and the proportional relationship between the rotational speed of the motor 2 and the sliding speed of the slide rail may be adjusted by adjusting the kinds, the number, the connection relationship, etc. of the gears in the reduction gear set. In addition, the rotating speed of the clutch 5 can be adjusted during normal operation by setting the rotating speed of the motor 2 and/or the reduction ratio of the reduction gear set, and the rotating speed is preferably in the range of 0.5 r/s-3.5 r/s. In this way, the clutch 5 rotates at a low rotational speed in both the manual mode and the automatic mode, and no significant vibration or noise is generated at a low rotational speed even if the clutch 5 itself is not highly accurate in structural engagement.

In addition, the clutch 5 described above may be used in other situations where power connection and switching are required, in addition to the intelligent storage cabinet, particularly in various actuators that are required to withstand high torque, have low noise, and are smooth to switch and small in size. In use, either one of the power ring 51 and the power disc 52 may be selected as the power input end, and the other as the power output end. The outer circumference of the power ring 51 may be provided with a transmission structure, and may be a belt rim, a chain rim, a timing belt rim, a bevel gear rim, a worm rim, a cam rim, a friction rim, a ratchet wheel rim, a cycloid rim, etc., in addition to the spur gear rim, a chain rim, a timing belt rim, a bevel gear rim, a worm rim, a cam rim, a friction rim, a ratchet wheel rim, a cycloid rim, etc., as required.

In addition, it should be noted that, the slide rail actuator described above not only drives the drawer to slide in the intelligent storage cabinet, but also can be used in other scenes needing linear operation, such as the movement of the chest door, the movement of the curtain, etc., and is especially suitable for being used in scenes needing to bear larger acting force, small volume, good concealment and low noise. In the above example, the first rail 11 is fixedly arranged and the second rail 12 slides relative to the first rail 11, and according to the principle of relativity of movement, the second rail 12 may be fixedly arranged and the first rail 11 slides relative to each other in different usage scenarios according to actual situations.

The above embodiments are illustrative for the purpose of illustrating the technical concept and features of the present invention so that those skilled in the art can understand the content of the present invention and implement it accordingly, and thus do not limit the scope of the present invention. All equivalent changes or modifications made in accordance with the spirit of the present invention should be construed to be included in the scope of the present invention.

Claims (10)

1. A slide rail executor, characterized in that: the sliding type power transmission device comprises a first rail body (11) and a second rail body (12) which are in sliding connection with each other, wherein a driving tooth surface (13) arranged along the sliding direction is arranged on the first rail body (11), and a power cabin (14) is arranged on the second rail body (12); the power cabin (14) is internally provided with a motor (2) and a reduction gear set which is connected between the motor (2) and a driving tooth surface (13) in a power way; a clutch (5) is also arranged on the transmission path between the motor (2) and the drive tooth surface (13).

2. The sled actuator of claim 1, wherein: the clutch (5) comprises a power ring (51) and a power disc (52) which are coaxially arranged; the power ring (51) is rotatably sleeved on the periphery of the power disc (52), and a first circumferential friction surface (511) is arranged on the inner side of the power ring (51); the edge of the power disc (52) is provided with 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 containing groove (522) is formed between the second friction surfaces; each receiving slot (522) has a wedge-shaped slot tip and an open end opposite the slot tip;

a roller (54) and a first elastic element (59) for driving the roller (54) to move towards the open end are arranged in the accommodating groove (522); a propulsion element (53) is arranged on the power disc (52), and the propulsion element (53) drives the roller (54) to move towards the groove tip under the action of a second elastic element (539); the combined action of the first elastic element (59) and the second elastic element (539) determines a stressed equilibrium position of the roller (54) in which the peripheral wall of the roller (54) is not in contact with the first friction surface (511) and the second friction surface (521) at the same time;

the power disc (52) is also provided with an electric control driving device (55) which can apply a third acting force to the propulsion element (53); the pushing element (53) drives the roller (54) to deviate from the stressed balance position under the driving of the third acting force, and the peripheral wall of the roller (54) is contacted with the first friction surface (511) and the second friction surface (521) at the same time.

3. The sled actuator of claim 2, wherein: the rotating speed of the motor (2) and/or the reduction ratio of the reduction gear set are/is set, so that the rotating speed of the clutch (5) is in the range of 0.5 r/s-3.5 r/s during normal operation.

4. The sled actuator of claim 2, wherein: an embedding hole is formed in the entity where the second friction surface (521) is located, the first elastic element (59) is a compression spring, one end of the first elastic element (59) is arranged in the embedding hole, and the other end of the first elastic element (59) abuts against the roller (54).

5. The sled actuator of claim 2, wherein: the propelling element (53) is slidably arranged on the power disc (52), a concave area which is abutted against the roller (54) is formed at the end part of the propelling element (53), and the second elastic element (539) is a pressure spring arranged on one side of the propelling element (53).

6. The sled actuator of claim 2, wherein: the power ring (51) has a first ring gear portion (512) on its outer periphery to receive power from upstream and a second ring gear portion (524) on the power disc (52) to provide power downstream.

7. The sled actuator of claim 6, wherein: the reduction gear set comprises a worm (41), a first driving wheel and a second driving wheel; the worm (41) is arranged on an output shaft of the motor (2), the first driving wheel comprises a worm wheel (42) meshed with the worm (41) and a gear III (43) coaxially and rigidly connected with the worm wheel (42), the second driving wheel comprises a gear IV (44) meshed with the gear III (43) and a gear V (45) coaxially and rigidly connected with the gear IV (44), the gear V (45) is meshed with the first gear ring part (512), and the second gear ring part (524) is meshed with the driving tooth surface (13); the number of teeth of the worm wheel (42) is larger than that of the gear III (43), and the number of teeth of the gear IV (44) is larger than that of the gear V (45).

8. An automatic opening and closing drawer, characterized in that: comprising a support (91) and a drawer body (92) sliding with respect to said support (91), further comprising a slide actuator according to any one of claims 1 to 7; at least one side of the drawer body (92) is provided with the sliding rail actuator; the second rail body (12) is fixed with the drawer body (92) and the first rail body (11) is fixed with the support frame (91), or the first rail body (11) is fixed with the drawer body (92) and the second rail body (12) is fixed with the support frame (91).

9. The automatically opening and closing drawer of claim 8, wherein: the second rail body (12) is fixed with the drawer body (92) and the first rail body (11) is fixed with the supporting frame (91); the power cabin (14) is a flat cabin body, an inward sinking area matched with the power cabin (14) is arranged on the outer side wall of the drawer body (92), and the power cabin (14) is partially embedded into the inward sinking area.

10. An intelligent storage cabinet which is characterized in that: comprising a storage cabinet body (93) and at least one automatic opening and closing drawer arranged in the storage cabinet body (93), wherein the automatic opening and closing drawer is the automatic opening and closing drawer according to claim 8 or 9.