Sound insulation and noise reduction small and special motor

Abstract

A sound insulation and noise reduction small and special electric machine provided by the present invention comprises an outer shell and a rear shell, the outer shell comprises an inner shell and a motor cavity, the inner shell comprises an inner sound insulation layer and a bonding layer, the inner sound insulation layer is a high-density sound insulation board, a hollow inner cavity is arranged in the inner sound insulation layer, and the interior of the hollow inner cavity is of a vacuum structure. The rear side of the inner sound insulation layer is provided with a set of inner sealing layers used for providing a sealing effect with the inner wall of the motor cavity, and the inner side of each inner sealing layer is provided with a set of inner heat conduction ring frames used for conducting heat in the motor cavity in an inner isolation mode. Compared with the prior art, the invention has the following beneficial effects: the insulating inner layer reinforces the electrical safety with the inner plate through cross adhesion of insulating tapes, the inner sound insulation layer adopts a high-density sound insulation plate built-in vacuum cavity, the vacuum environment is utilized to block sound wave transmission and suppress mechanical vibration noise, and the power stabilizing assembly is rigidly connected with the shell through a bolt. Power output stability is guaranteed, and the driving head directly transmits motor power.

Description

Technical Field

[0001] The invention relates to a sound-insulating and noise-reducing micro motor, belonging to the technical field of micro motors. Background Art

[0002] Existing micro motors have significant technical shortcomings in balancing heat dissipation, power stability, and sound insulation and noise reduction. The high power density and miniaturized design of the motors lead to increased heat accumulation per unit volume. Conventional heat dissipation methods such as natural convection and heat sinks are difficult to conduct heat efficiently due to space limitations. Forced air cooling or liquid cooling systems can alleviate temperature rise, but they increase volume, power consumption, and sealing complexity. The introduction of fan or pump vibration may exacerbate noise problems. In terms of power stability, micro motors are prone to torque pulsation and speed fluctuations due to insufficient optimization of electromagnetic design. Especially in light load or dynamic load scenarios, manufacturing tolerances such as magnetic circuit saturation, cogging effect, and rotor eccentricity will further amplify output fluctuations and affect control accuracy. Traditional countermeasures, such as closed-loop control algorithms and precision sensors, can partially compensate for errors, but these sensors are expensive and susceptible to electromagnetic interference. Furthermore, regarding noise reduction, electromagnetic noise stems from air gap magnetic flux harmonics and high-frequency vibrations of the stator and rotor, while mechanical noise is caused by bearing friction, assembly eccentricity, and rotor dynamic balance deviation. Conventional sound insulation measures, such as improving heat dissipation efficiency, require expanding ventilation gaps, but this will weaken structural stiffness and increase aerodynamic noise; enhancing electromagnetic symmetry to reduce noise may sacrifice power density. Current technologies mostly use local optimization or compromise solutions and lack systematic collaborative design, resulting in increasing marginal costs for performance improvements. This makes it difficult to meet the comprehensive needs of high-end application scenarios for high efficiency, quietness, and high dynamic response. Therefore, there is an urgent need for a sound-isolating and noise-reducing micro motor to solve the above problems. Summary of the Invention

[0003] In view of the shortcomings of the existing technology, the purpose of the present invention is to provide a sound-insulating and noise-reducing micro motor, which solves the problems raised in the above background technology by adding a shell, connecting wires, an external liquid-cooling pipe head, a power stabilizing component, a drive head and a rear shell.

[0004] The technical solution of the present invention is implemented as follows: a sound-insulating and noise-reducing micro motor, comprising: a shell and a rear shell, a group of rear shells for sealingly connecting the rear side of the shell is provided on the rear side of the shell, a group of connecting wires for connecting to an external power supply device is provided on the upper left end of the shell, a group of power stabilizing components for stably outputting the power of the micro motor is provided on the right side of the shell, the power stabilizing components and the shell are fixed by bolts, the shell and the rear shell are fixed by bolts, two groups of external liquid cooling pipe heads for providing continuous cooling effect for the motor are provided on the upper end of the connection between the shell and the power stabilizing component, and a group of drive heads for outputting the power of the micro motor is provided in the middle position on the right side of the power stabilizing component; The outer shell includes an outer heat conducting fin and a motor cavity, and the inner shell includes a waterproof outer shell, an insulating inner layer, an inner sound insulation layer, an inner sealing layer and an adhesive layer. The waterproof outer shell is located on the outermost surface of the inner shell, and its outer side is made of a waterproof coating and its inner side is made of a waterproof polyethylene material. The inner side of the waterproof outer shell is provided with a group of insulating inner layers for ensuring the insulation effect of the inner wall of the motor cavity. The insulating inner layer includes an insulating tape and an insulating inner plate. The outer side of the insulating inner plate is adhered with insulating tape in a cross-structured multi-layer manner. The inner side of the insulating inner plate is provided with a group of inner sound insulation layers for improving the sound insulation effect inside the motor cavity. The inner sound insulation layer is a high-density sound insulation board, and a hollow inner cavity is provided inside it, wherein the hollow inner cavity is a A vacuum structure. In actual use, four sets of aluminum alloy external heat-conducting fins and commutation channels are integrated in the outer shell, and a circulating liquid cooling system is formed with the external liquid cooling pipe head. The flow of cooling liquid is used to actively dissipate heat. At the same time, the heat-conducting fins increase the heat dissipation area and improve the temperature control efficiency. The inner shell adopts a multi-layer composite structure: the outer waterproof shell combines a waterproof coating with polyethylene material to achieve moisture-proof sealing; the insulating inner layer strengthens electrical safety by cross-bonding insulating tape and the inner plate. The inner sound insulation layer uses a high-density sound insulation board with a built-in vacuum cavity, which uses the vacuum environment to block the transmission of sound waves and suppress mechanical vibration noise. The power stabilization component and the outer shell are rigidly connected by bolts to ensure the stability of power output, and the drive head directly transmits motor power.

[0005] After adopting the above technical solution, the beneficial effects of the present invention are: the liquid cooling system is combined with the active-passive heat dissipation of the heat-conducting structure, taking into account the thermal management efficiency; the vacuum sound insulation layer and the waterproof insulation layer realize multiple protections in a limited space, which not only isolates the external environmental interference and the heat released by the motor itself, but also reduces the risk of internal noise and power conduction. The modular assembly method improves the structural sealing and maintenance convenience, and is suitable for industrial scenarios with high noise sensitivity, high humidity or long-term stable operation.

[0006] As a preferred embodiment, a group of exchange channels for flowing external cooling liquid is provided between each two groups of the external heat-conducting fins in different areas. There are four groups of exchange channels, and the four groups of exchange channels are interconnected. A group of inner shells for connecting to the four groups of external heat-conducting fin groups is provided on the inside. Several groups of external connecting joints for connecting and fixing with the power stabilization component and the rear shell are provided on the left and right sides of the inner shell respectively. A group of motor cavities for providing power to the micro motor is provided on the inside of the inner shell. The external heat-conducting fins are made of an aluminum alloy material. Several groups of external heat-conducting fins constitute a group of external heat-conducting fin groups. There are four groups of external heat-conducting fin groups, and the four groups of external heat-conducting fin groups are arranged in a rectangular structure when viewed from the right side. A group of sealed spaces for storing cooling water is provided between the four groups of external heat-conducting fin groups and the inner wall of the outer shell. The sealed space is a water-cooled inner cavity. The water-cooled inner cavity circulates external water-cooled liquid through two groups of external liquid-cooling pipe heads. A group of diversion water pumps for controlling water inlet and outlet are respectively provided inside the two groups of external liquid-cooling pipe heads.

[0007] As a preferred embodiment, a group of inner sealing layers for providing a sealing effect with the inner wall of the motor cavity is provided on the rear side of the inner sound insulation layer, and a group of inner heat-conducting ring frames for conducting heat inside the motor cavity are provided on the inner side of the inner sealing layer. The inner side of the inner heat-conducting ring frame limits and wraps the waterproof outer shell, the insulating inner layer, the inner sound insulation layer, and the inner sealing layer. The waterproof outer shell, the insulating inner layer, the inner sound insulation layer, and the inner sealing layer are seamlessly bonded by an adhesive layer. In actual use, the liquid cooling cycle and the multi-layer composite structure are synergistically optimized for heat dissipation, sealing, and internal noise reduction performance of the motor. Four groups of aluminum alloy outer heat-conducting wing groups in the outer shell and the water-cooled inner cavity form a rectangular heat dissipation matrix. The coolant is driven by a diversion water pump to circulate in four groups of interconnected commutation channels, thereby improving heat dissipation uniformity and efficiency. The inner shell integrates a waterproof outer shell, an inner plate cross-laminated with insulating tape, a vacuum sound insulation layer, and an inner sealing layer, which are seamlessly connected by an adhesive layer to form a multiple protection barrier. The inner sealing layer is combined with the inner heat-conducting ring frame to conduct the heat inside the motor cavity to the liquid cooling system in a direction, thereby suppressing heat accumulation and blocking noise transmission.

[0008] As a preferred embodiment, the interior of the motor cavity includes a core shaft, an inner connecting core seat, heat dissipation holes, an outer sound insulation layer, a front temperature conducting shell, a rear temperature conducting shell, a positioning hole, an inner positioning bearing 1, a heat dissipation area, a built-in disk, an inner positioning bearing 2, an annular thermal protection device and a motor power component. A group of inner connecting core seats for maintaining the balance and stability of the core shaft during rotation and limiting the position of the inner positioning bearing 1 are respectively provided on the outer sides of the left and right ends of the core shaft. The core shaft passes through the center position of the inner connecting core seat and a group of inner positioning bearing 1 for maintaining the stability of the core shaft rotation is provided at the connection. A group of outer sound insulation layers for isolating the noise inside the motor cavity are provided on the outer side of the inner connecting core seat. The outer sound insulation layer and the inner connecting core seat are interlocked and fixed to the front temperature conducting shell by several groups of bolts. The front temperature conducting shell and the inner connecting core seat are an integral structure. The interior of the front temperature conducting shell is annularly structured with several groups of heat dissipation holes for dissipating heat to the outside. The cross-section of the front temperature conducting shell is a convex structure when viewed from above, and is arranged symmetrically with the rear temperature conducting shell.

[0009] As a preferred embodiment, the rear temperature-conducting shell has the same specifications as the front temperature-conducting shell, and the front temperature-conducting shell and the rear temperature-conducting shell are connected and fixed by a plurality of groups of bolts. A group of motor power components for rotating between the rotor and the stator are commonly provided inside the front temperature-conducting shell and the rear temperature-conducting shell. A group of heat dissipation areas for dissipating the heat inside the motor power components are respectively provided on the left and right sides of the motor power components. Each group of the heat dissipation areas is interconnected with a plurality of groups of heat dissipation holes. A group of built-in disks for loading annular thermal protection devices are provided inside each group of the heat dissipation areas. A group of internal positioning bearings for maintaining stable rotation of the core shaft are provided inside the built-in disks. The second internal positioning bearing is integrated with the built-in disk. An annular thermal protection device is installed inside the built-in disk. The annular thermal protection device includes a PTC thermistor and a dedicated protector of a related model. The resistance signal of the PTC thermistor is transmitted to the dedicated protector to achieve precise overload and phase loss protection. In actual use, the core shaft is radially positioned and supported by the internal connecting core seats at both ends. The first internal positioning bearing is embedded in the connection between the core seat and the core shaft to ensure the coaxiality and stability of the core shaft rotation. The outer sound insulation layer is embedded in the internal connecting core seat and fixed to the front temperature guide shell with bolts, forming a double-layer barrier to mechanical vibration and noise. The symmetrically designed front and rear temperature-conducting shells are bolted together to form a closed cavity. The annular heat dissipation holes inside the shell form a continuous heat dissipation path with the heat dissipation zones on both sides, dissipating the heat generated by the stator and rotor in the motor's power components outward through the heat dissipation holes. The heat dissipation zone has an integrated internal locating bearing with two integrated bearings. The integrated structure enhances the core shaft support accuracy. A built-in annular thermal protection device also features a PTC thermistor that monitors temperature changes in real time and generates a resistance signal. This signal is transmitted to a dedicated protector, triggering overload or phase loss protection to dynamically control the motor's operating status. The motor power component serves as the core power space. The synergistic effect of the heat dissipation zone and the thermal shell optimizes the heat conduction path to avoid local overheating. The bolted connection between the outer sound insulation layer and the thermal shell improves its internal sealing and the convenience of assembly during component replacement, while the redundant configuration of the dual-bearing positioning system and thermal protection devices further enhances system reliability.

[0010] After adopting the above technical solution, the beneficial effects of the present invention are as follows: the two ends of the core shaft inside the motor cavity cooperate with the inner connecting core seat through the inner positioning bearing 1 to ensure the rotation balance of the rotor; the symmetrically arranged front temperature-conducting shell and the rear temperature-conducting shell form a convex heat dissipation structure, and its annularly distributed heat dissipation holes are connected with the heat dissipation areas on both sides to construct a multi-directional heat dissipation path, accelerate the heat diffusion of the motor power components to the outside, the outer sound insulation layer is embedded in the inner connecting core seat, and combined with the bolt fixation to form a double noise reduction barrier to suppress the transmission of mechanical vibration noise, the built-in disk integrates the inner positioning bearing 2 and the annular thermal protection device, and monitors the temperature in real time through the PTC thermistor The resistance signal is transmitted to the dedicated protector to trigger the overload or phase loss protection logic to achieve dynamic thermal protection. The PTC thermistor senses temperature changes in real time through the resistance step characteristic. When the temperature of the motor power component exceeds the threshold, the resistance rises sharply to trigger the action of the dedicated protector. The motor power component serves as the stator and rotor operating space. The heat conduction path is optimized through the synergistic effect of the heat dissipation area and the thermal conductive shell. The heat of the motor power component is quickly diffused to the liquid cooling heat dissipation area through the aluminum alloy thermal conductive shell. At the same time, the external thermal conductive wing group forces convection heat exchange through the water-cooled inner cavity to achieve balanced distribution of axial and radial heat flow, thereby reducing the risk of local temperature rise in the motor.

[0011] As a preferred embodiment, the motor power component includes a stator, a three-phase star coil, an inner rotor, a varistor and a rotor stator core. The stator is provided with several groups, and several groups of stators are of an integrated structure. A group of three-phase star coils is wound on the outside of each group of stators. The stator inside the three-phase star coil adopts a multi-slot structure and is symmetrically distributed at an electrical angle of 120°. Several groups of varistors are provided on the inside of several groups of stators for clamping the voltage to a safety threshold to prevent breakdown of windings or electronic components. A group of inner rotors for driving the core shaft to rotate is provided on the inside of the varistor. A group of rotor stators for maintaining their positioning connection is provided at the connection between the inner rotor and the core shaft. The rotor stator core, several groups of stators and the inner rotor are all made of a permanent magnetic material. In actual use, the three-phase star coils are symmetrically wound on the outside of the stator at an electrical angle of 120° to form a uniformly distributed electromagnetic field. The varistor is integrated on the inside of the stator to monitor and clamp the coil voltage fluctuation in real time to prevent overvoltage from breaking down the windings or electronic components.

[0012] After adopting the above technical solution, the present invention has the following beneficial effects: the inner rotor is fixedly connected to the rotor stator core through the permanent magnetic material, and the core shaft is driven to rotate by the stator magnetic field. The rigid positioning of the rotor stator core and the core shaft ensures the stability of power transmission. At the same time, the permanent magnetic material is directly integrated into the rotor stator core to form an efficient closed magnetic circuit, which significantly enhances the rotor magnetic field strength. When the rotating magnetic field generated by the stator coil after power is applied interacts with the magnetic field of the permanent magnet rotor, strong magnetic field coupling can be quickly established due to the low impedance characteristics of the magnetic circuit, thereby improving the torque output capacity per unit volume. In addition, the stator, inner rotor and rotor stator core are all made of permanent magnet materials, which optimizes the magnetic circuit closure efficiency and reduces leakage magnetic loss.

[0013] As a preferred embodiment, the right side of the core shaft is dynamically connected to the power stabilizing assembly, and the power stabilizing assembly includes a rear sealing shell and two external positioning bearings. The rear sealing shell has the same specifications as the outer sealing shell, and the rear sealing shell is fixed to the right side of the outer shell by bolts. A group of outer sealing shells for keeping the interior of the inner transmission cavity sealed is provided on the right side of the rear sealing shell. The outer sealing shell has the same specifications as the rear sealing shell and is symmetrically connected and fixed. The right side of the core shaft passes through the center position of the rear sealing shell and is connected and fixed to the center position of the left side of the inner core gear. A group of connecting shafts is provided in the middle position on the right side of the inner core gear.

[0014] As a preferred embodiment, a group of outer core gears for power connection to the connecting shaft is provided on the outside of the middle position of the connecting shaft, and is fixedly connected to the outside of the connecting shaft. The outer core gear and the inner core gear are coaxially arranged and rotate synchronously. The outer tooth structure of the outer core gear and the inner core gear is the same, and four groups of outer guide positioning shaft columns are evenly distributed on the outside to maintain the stable rotation of the outer core gear and the inner core gear. The length of the outer guide positioning shaft column is greater than the sum of the lengths of the outer core gear and the inner core gear. The outer sides of the four groups of outer guide positioning shaft columns are all provided with teeth, and the outer core gear and the inner core gear are evenly meshed with each other.

[0015] As a preferred embodiment, each group of the outer guide positioning shaft columns is provided with a group of side guide shafts for maintaining their positioning and rotation, and each group of the side guide shafts and their corresponding connected outer guide positioning shaft columns are provided with several groups of silent bearings, and the outer side of the right end of the side guide shaft is provided with a group of outer positioning bearings 1 for maintaining the positioning and rotation of the side guide shaft, the right side of the side guide shaft is connected and fixed to the inner side of the outer positioning bearing 1, and the outer side of the right end of the connecting shaft is provided with a group of outer positioning bearings 2 for maintaining its rotation stability, and the outer positioning bearings 2 and 1 are both sealed silent bearings. In actual use, the rear sealing shell and the outer sealing shell are first connected by symmetrical bolts to form a closed inner transmission cavity to ensure the sealing protection of the power transmission environment. The right end of the core shaft passes through the center of the rear sealing shell and is rigidly connected to the inner core gear, driving the inner core gear to rotate synchronously with the shaft, and realizing stable output with low fluctuation and low noise in the high-rigidity power transmission path, meeting the precision transmission requirements under complex working conditions; The inner core gear is coaxially fixed with the outer core gear through a connecting shaft to realize dual-gear power coupling transmission. The four sets of outer guide positioning shafts are evenly distributed along the circumference, and their outer teeth are respectively engaged with the outer core gear and the inner core gear to form a multi-point synchronous constraint structure to suppress radial displacement and vibration during gear transmission. The inner core gear and the outer core gear are coaxially rigidly fixed with the connecting shaft to form a dual-gear power coupling transmission structure. The coaxial characteristics of the two gears keep strict synchronization during rotation, eliminating the phase difference and uneven torque distribution problems in traditional single-stage gear transmission. The four sets of outer guide positioning shafts evenly distributed around the circumference are simultaneously engaged with the double gears through the outer teeth to form a multi-point symmetrical meshing constraint mechanism. This layout effectively disperses the load distribution on the gear meshing surface to reduce the internal wear of the motor.

[0016] After adopting the above technical solution, the beneficial effects of the present invention are as follows: by using an external guide positioning shaft column to embed a side guide shaft, and realizing low-friction rotational support through a silent bearing, the right end of the side guide shaft is positioned by an external positioning bearing 1, and the right end of the connecting shaft is fixed by an external positioning bearing 2, forming a dual bearing positioning system, and the integrated design of the sealed silent bearing reduces operating noise; ensuring axial rotation concentricity, the integrated design of the sealed silent bearing reduces operating noise while isolating external pollutants from invading the transmission cavity, and at the same time, the integrated design of the sealed silent bearing is combined with a composite elastic sealing structure to form multiple anti-pollution barriers while reducing frictional resistance, blocking external particles or liquids from invading the interior of the transmission cavity. This design maintains the stability of high-precision power transmission and extends the service life of key moving parts through the synergistic effect of the low-friction support interface and the sealing component. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 This is a schematic diagram of a top view of the right oblique front side of a sound-insulating and noise-reducing micro motor according to the present invention; Figure 2 This is a schematic diagram of the structure of the interior of the housing of a sound-insulating and noise-reducing micro motor according to the present invention, viewed from the right oblique front side; Figure 3 This is a schematic diagram of the front side top view of the inner shell of a sound-insulating and noise-reducing micro motor of the present invention; Figure 4 This is a schematic diagram of a top view of the right oblique front side of the relevant components inside the motor cavity of a sound-insulating and noise-reducing micro motor of the present invention; Figure 5 This is a schematic structural diagram of a ring-shaped thermal protection device in a sound-insulating and noise-reducing micro motor according to the present invention; Figure 6 This is a top-down structural diagram of the motor power components and heat dissipation holes in a sound-insulating and noise-reducing micro motor according to the present invention; Figure 7 This is a schematic diagram of the structure of a power stabilizing component in a sound-insulating and noise-reducing micro motor according to the present invention, viewed from the right rear oblique side; In the figure: 1-housing, 2-connecting wires, 3-external liquid cooling pipe head, 4-power stabilization assembly, 5-drive head, 6-rear housing; 11-external heat conducting fins, 12-commutation channel, 13-external connector, 14-inner shell, 15-motor cavity; 14a-waterproof outer shell, 14b-insulating inner layer, 14c-inner sound insulation layer, 14d-inner sealing layer, 14e-adhesive layer; 15a-core shaft, 15b-internal connecting core seat, 15c-heat dissipation hole, 15d-external sound insulation layer, 15e-front temperature guide shell, 15f-rear temperature guide shell, 15g-positioning hole, 15h-internal positioning bearing 1, 15i-heat dissipation area, 15j-internal disk, 15k-internal positioning bearing 2, 15l-annular thermal protection device, 15m-motor power component; m1-stator, m2-three-phase star coil, m3-inner rotor, m4-varistor, m5-rotor stator core; 4a-rear sealing shell, 4b-inner transmission cavity, 4c-external guide positioning shaft, 4d-side guide shaft, 4e-external core gear, 4f-inner core gear, 4g-inner bearing, 4h-external positioning bearing 1, 4i-outer sealing shell, 4j-external positioning bearing 2. DETAILED DESCRIPTION

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0020] Example 1, please refer to Figure 1-Figure 7 , A sound-insulating and noise-reducing micro motor comprises: a housing 1 and a rear housing 6. A rear housing 6 is provided on the rear side of the housing 1 for sealingly connecting the rear side assembly of the housing 1. A connecting wire 2 is provided at the upper left end of the housing 1 for connecting to an external power supply device. A power stabilizing assembly 4 is provided on the right side of the housing 1 for stably outputting the power of the micro motor. The power stabilizing assembly 4 is fixed to the housing 1 by bolts, and the housing 1 is fixed to the rear housing 6 by bolts. Two sets of external liquid cooling pipe heads 3 are provided at the upper end of the connection between the housing 1 and the power stabilizing assembly 4 for providing continuous cooling effect to the motor. A drive head 5 is provided in the middle position on the right side of the power stabilizing assembly 4 for outputting the power of the micro motor. See also Figure 1-Figure 2 , The outer shell 1 includes an outer heat conducting fin 11, an inner shell 14 and a motor cavity 15. The inner shell 14 includes a waterproof outer shell 14a, an inner sound insulation layer 14c and an adhesive layer 14e. The waterproof outer shell 14a is located on the outermost surface of the inner shell 14. The outer side is made of a waterproof coating and the inner side is made of a waterproof polyethylene material. The inner side of the waterproof outer shell 14a is provided with a group of insulating inner layers 14b for ensuring the insulation effect of the inner wall of the motor cavity 15. The insulating inner layer 14b includes an insulating tape and an insulating inner plate. The outer side of the insulating inner plate is covered with insulating tape in a cross-structured multi-layer manner. Paste, a group of inner sound insulation layers 14c are provided on the inner side of the insulating inner plate to improve the sound insulation effect inside the motor cavity 15. The inner sound insulation layer 14c is a high-density sound insulation board with a hollow inner cavity inside. The inner cavity is a vacuum structure. In actual use, four groups of aluminum alloy outer heat conduction fins 11 and commutation channels 12 are integrated in the outer shell 1, and a circulating liquid cooling system is formed with the external liquid cooling pipe head 3. The cooling liquid flow is used to actively dissipate heat. At the same time, the heat conduction fins increase the heat dissipation area and improve the temperature control efficiency. The inner shell 14 adopts a multi-layer composite structure: The outer waterproof shell 14a combines a waterproof coating with polyethylene material to achieve a moisture-proof seal. The insulating inner layer 14b is cross-bonded with insulating tape to enhance electrical safety. The inner sound insulation layer 14c uses a high-density sound insulation board with a built-in vacuum cavity, which uses the vacuum environment to block the transmission of sound waves and suppress mechanical vibration noise. The power stabilization component 4 is rigidly connected to the shell 1 with bolts to ensure power output stability. The drive head 5 directly transmits motor power. Its liquid cooling system and thermal conductive structure combine active and passive heat dissipation to ensure effective thermal management. The vacuum sound insulation layer and waterproof insulation layer provide multiple protections within a limited space, isolating the motor from external environmental interference and the heat released by the motor itself while reducing the risk of internal noise and electrical energy conduction. The modular assembly method enhances structural sealing and ease of maintenance, making it suitable for industrial scenarios with high noise sensitivity, high humidity, or requiring long-term stable operation.

[0021] See also Figure 1-Figure 2 A set of commutation channels 12 for flowing external cooling liquid is provided between each two sets of external heat conducting fins 11 in different areas. There are four sets of commutation channels 12, and the four sets of commutation channels 12 are interconnected. A set of inner shells 14 for connecting to the four sets of external heat conducting fins is provided on the inside. Several sets of external connectors 13 for connecting to the power stabilizing assembly 4 and the rear shell 6 are provided on the left and right sides of the inner shell 14. A set of motor cavities 15 for providing power to the micro motor are provided inside the inner shell 14. 1 is made of an aluminum alloy material. Several groups of external heat-conducting fins 11 constitute an external heat-conducting fin group. There are four groups of external heat-conducting fin groups, and the four groups of external heat-conducting fin groups are arranged in a rectangular structure when viewed from the right side. A sealed space for storing cooling water is provided between the four groups of external heat-conducting fin groups and the inner wall of the shell 1. The sealed space is a water-cooled inner cavity. The water-cooled inner cavity circulates external water-cooling liquid through two groups of external liquid-cooling pipe heads 3. A group of diversion water pumps for controlling water inlet and outlet are respectively provided inside the two groups of external liquid-cooling pipe heads 3.

[0022] See also Figure 1-Figure 3, Example 2: Based on the explanation in Example 1, further, a group of inner sealing layers 14d are provided on the rear side of the inner sound insulation layer 14c for providing a sealing effect with the inner wall of the motor cavity 15, and a group of inner heat-conducting ring frames are provided on the inner side of the inner sealing layer 14d for conducting heat inside the motor cavity 15 to the inner insulation. The inner side of the inner heat-conducting ring frame limits the waterproof shell 14a, the insulating inner layer 14b, the inner sound insulation layer 14c, and the inner sealing layer 14d. The waterproof shell 14a, the insulating inner layer 14b, the inner sound insulation layer 14c, and the inner sealing layer 14d are seamlessly adhered by the adhesive layer 14e. In actual use, through the liquid cooling cycle The multi-layer composite structure works together to optimize the heat dissipation, sealing and internal noise reduction performance of the motor. The four groups of aluminum alloy external heat-conducting wing groups in the outer shell 1 and the water-cooled inner cavity form a rectangular heat dissipation matrix. The coolant is driven by the diversion water pump to circulate in the four groups of interconnected commutation channels 12, thereby improving the heat dissipation uniformity and efficiency; the inner shell 14 integrates a waterproof outer shell 14a, an inner plate cross-laminated with insulating tape, a vacuum sound insulation layer and an inner sealing layer 14d, which are seamlessly connected through the adhesive layer 14e to form a multiple protection barrier. The inner sealing layer 14d is combined with the inner heat-conducting ring frame to directionally conduct the heat inside the motor cavity 15 to the liquid cooling system, thereby suppressing heat accumulation and blocking noise transmission.

[0023] See also Figure 1-Figure 5 , Example 3: Based on the description in Example 1 and Example 2, further, The motor cavity 15 includes a core shaft 15a, an outer sound insulation layer 15d and a motor power component 15m. The outer sides of the left and right ends of the core shaft 15a are respectively provided with a group of inner connecting core seats 15b for maintaining the balance and stability of the core shaft 15a during rotation and limiting the position of the inner positioning bearing 15h. The core shaft 15a passes through the center position of the inner connecting core seat 15b and a group of inner positioning bearings 15h are provided at the connection to maintain the rotation stability of the core shaft 15a. The outer side of the inner connecting core seat 15b is provided with a group of inner positioning bearings 15h for An outer sound insulation layer 15d is provided to isolate the noise inside the motor cavity 15. The outer sound insulation layer 15d is interlocked with the inner connecting core seat 15b and is fixed to the front temperature-conducting shell 15e by several groups of bolts. The front temperature-conducting shell 15e and the inner connecting core seat 15b are an integral structure. The interior of the front temperature-conducting shell 15e is annularly structured with several groups of heat dissipation holes 15c for dissipating heat to the outside. The cross-section of the front temperature-conducting shell 15e is a convex structure when viewed from above, and is symmetrically arranged with the rear temperature-conducting shell 15f.

[0024] The rear temperature-conducting shell 15f has the same specifications as the front temperature-conducting shell 15e. The front temperature-conducting shell 15e and the rear temperature-conducting shell 15f are connected and fixed by several groups of bolts. A group of motor power components 15m for rotating between the rotor and the stator m1 are commonly provided inside the front temperature-conducting shell 15e and the rear temperature-conducting shell 15f. A group of heat dissipation areas 15i for dissipating the internal heat of the motor power component 15m are respectively provided on the left and right sides. Each group of heat dissipation areas 15i is interconnected with several groups of heat dissipation holes 15c. Each group of heat dissipation areas 15i is provided with a group of built-in disks 15j for loading annular thermal protection devices 15l. A group of internal positioning bearings 15k for maintaining stable rotation of the core shaft 15a is provided inside the built-in disk 15j. The internal positioning bearings 15k and the built-in disk 15j are an integrated structure. A group of annular thermal protection devices 15l are provided inside the built-in disk 15j. The annular thermal protection device 151 includes a PTC thermistor and a dedicated protector of a related model. The PTC thermistor resistance signal is transmitted to the dedicated protector to achieve precise overload and phase loss protection. In actual use, the core shaft 15a is radially positioned and supported by the internal connecting core seats 15b at both ends. The internal positioning bearing 15h is embedded in the connection between the core seat and the core shaft 15a to ensure the coaxiality and stability of the core shaft 15a's rotation. The outer sound insulation layer 15d is embedded in the internal connecting core seat 15b and fixed to the front thermal shell 15e via bolts, forming a double-layer barrier to mechanical vibration and noise. The symmetrically designed front thermal shell 15e and rear thermal shell 15f are connected by bolts to form a closed cavity. The annular heat dissipation holes 15c and the heat dissipation areas 15i on both sides form a continuous heat dissipation path, dissipating the heat generated by the operation of the stator and rotor in the motor power component 15m outward through the heat dissipation holes 15c. The heat dissipation area 15i has an internal disk 15j integrated with an internal positioning bearing 15k. The integrated structure strengthens the support accuracy of the core shaft 15a. At the same time, a built-in annular thermal protection device 15l is built in. The PTC thermistor monitors temperature changes in real time and generates a resistance signal. After transmitting it to a dedicated protector, it triggers overload or phase loss protection action, dynamically adjusting the motor operation status. The motor power component 15m serves as the core power space. The synergistic effect of the heat dissipation area 15i and the thermal shell optimizes the heat conduction path to avoid local overheating. The bolted connection between the outer sound insulation layer 15d and the thermal shell improves its internal sealing and the convenience of assembly during component replacement. The redundant configuration of the dual-bearing positioning system and thermal protection devices further enhances system reliability.

[0025] See also Figure 1-Figure 5, Example 4: Based on the description in Example 1, Example 2 and Example 3, further, the two ends of the core shaft 15a inside the motor cavity 15 cooperate with the internal connection core seat 15b through the internal positioning bearing 15h to ensure the rotation balance of the rotor; the symmetrically arranged front temperature-conducting shell 15e and the rear temperature-conducting shell 15f form a convex heat dissipation structure, and its annularly distributed heat dissipation holes 15c are connected to the heat dissipation areas 15i on both sides to construct a multi-directional heat dissipation path, accelerating the heat diffusion of the motor power component 15m to the outside, the outer sound insulation layer 15d is embedded in the internal connection core seat 15b, and combined with bolts to form a double noise reduction barrier to suppress the transmission of mechanical vibration noise, the built-in disk 15j integrates the internal positioning bearing 2 15k and the annular thermal protection device 15 l. The temperature is monitored in real time through the PTC thermistor and the resistance signal is transmitted to the dedicated protector, triggering the overload or phase loss protection logic to achieve dynamic thermal protection. The PTC thermistor senses temperature changes in real time through the resistance step characteristic. When the temperature of the motor power component 15m exceeds the threshold, the resistance rises sharply, triggering the action of the dedicated protector. The motor power component 15m serves as the stator and rotor operating space. The heat conduction path is optimized through the synergistic effect of the heat dissipation area 15i and the thermal shell. The heat of the motor power component 15m is quickly diffused to the liquid cooling heat dissipation area 15i through the aluminum alloy thermal shell. At the same time, the external thermal wing group forces convection heat exchange through the water-cooled inner cavity to achieve balanced distribution of axial and radial heat flow, thereby reducing the risk of local temperature rise in the motor.

[0026] See also Figure 3-Figure 6 , Example 5: Based on the description in Example 2, Example 3 and Example 4, further, The motor power component 15m includes a stator m1, a three-phase star coil m2, an inner rotor m3, a varistor m4, and a rotor stator core m5. The stator m1 is provided with several groups, and the several groups of stators m1 are in an integrated structure. A group of three-phase star coils m2 are wound around the outside of each group of stators m1. The stator m1 inside the three-phase star coil m2 adopts a multi-slot structure and is symmetrically distributed at an electrical angle of 120 degrees. Several groups of varistor m4 are provided inside the several groups of stators m1 to clamp the voltage to a safe threshold to prevent the winding or electronic components from breaking down. The varistor m4 is provided with a plurality of varistor m4. A set of inner rotors m3 are provided on the side for driving the core shaft 15a to rotate. A set of rotor stators m5 are provided at the connection between the inner rotor m3 and the core shaft 15a for maintaining their positioning connection. The rotor stators m5, several sets of stators m1 and the inner rotor m3 are all made of a permanent magnetic material. In actual use, a three-phase star-shaped coil m2 is symmetrically wound around the outside of the stator m1 at an electrical angle of 120° to form a uniformly distributed electromagnetic field. The varistor m4 is integrated on the inside of the stator m1 to monitor and clamp the coil voltage fluctuation in real time to prevent overvoltage from breaking down the windings or electronic components. The inner rotor m3 is fixedly connected to the rotor stator m5 through permanent magnetic material, and drives the core shaft 15a to rotate under the drive of the stator m1 magnetic field. The rigid positioning of the rotor stator m5 and the core shaft 15a ensures the stability of power transmission. At the same time, the permanent magnetic material is directly integrated into the rotor stator m5 to form an efficient closed magnetic circuit, which significantly enhances the rotor magnetic field strength. When the rotating magnetic field generated by the stator m1 coil after energization interacts with the permanent magnet rotor magnetic field, due to the low impedance characteristics of the magnetic circuit, strong magnetic field coupling can be quickly established, thereby improving the unit volume torque output capacity. In addition, the stator m1, inner rotor m3 and rotor stator m5 are all made of permanent magnetic materials, which optimizes the magnetic circuit closure efficiency and reduces leakage magnetic loss.

[0027] See also Figure 1-Figure 7 , Example 6: Based on the description in Examples 1 to 5, further, the right side of the core shaft 15a is dynamically connected to the power stabilizing assembly 4, and the power stabilizing assembly 4 includes a rear sealing shell 4a, an inner transmission chamber 4b, an outer guide positioning shaft column 4c, an outer core gear 4e, an inner core gear 4f and an outer positioning bearing 4j. The rear sealing shell 4a has the same specifications as the outer sealing shell 4i. The rear sealing shell 4a is fixed to the right side of the outer shell 1 by bolts. A group of outer sealing shells 4i for keeping the inside of the inner transmission chamber 4b sealed is provided on the right side of the rear sealing shell 4a. The outer sealing shell 4i has the same specifications as the rear sealing shell 4a and is symmetrically connected and fixed. The right side of the core shaft 15a passes through the center position of the rear sealing shell 4a and is connected and fixed to the center position of the left side of the inner core gear 4f. A group of connecting shafts is provided in the middle position on the right side of the inner core gear 4f.

[0028] A group of outer core gears 4e for power connection to the connecting shaft is provided on the outside of the middle position of the connecting shaft, and is fixedly connected to the outside of the connecting shaft. The outer core gear 4e and the inner core gear 4f are coaxially arranged and rotate synchronously. The outer tooth structure of the outer core gear 4e and the inner core gear 4f are the same, and four groups of outer guide positioning shaft columns 4c for maintaining the stable rotation of the outer core gear 4e and the inner core gear 4f are evenly distributed on the outside. The length of the outer guide positioning shaft column 4c is greater than the sum of the lengths of the outer core gear 4e and the inner core gear 4f. The outer sides of the four groups of outer guide positioning shaft columns 4c are all provided with teeth, and the outer core gear 4e and the inner core gear 4f are evenly meshed with each other.

[0029] A group of side guide shafts 4d for maintaining their positioning and rotation is provided on the inner side of each group of outer guide positioning shaft columns 4c, and several groups of silent bearings are provided between each group of side guide shafts 4d and their corresponding outer guide positioning shaft columns 4c. A group of outer positioning bearings 4h for maintaining the positioning and rotation of the side guide shaft 4d is provided on the outer side of the right end of the side guide shaft 4d, and the right side of the side guide shaft 4d is connected and fixed to the inner side of the outer positioning bearing 4h. A group of outer positioning bearings 4j for maintaining their rotation stability is provided on the outer side of the right end of the connecting shaft. Both the outer positioning bearings 4j and the outer positioning bearings 4h are sealed and silent bearings. In actual use, the rear sealing shell 4a and the outer sealing shell 4i are first connected by symmetrical bolts to form a closed inner transmission cavity 4b to ensure the sealing protection of the power transmission environment. The right end of the core shaft 15a passes through the center of the rear sealing shell 4a and is rigidly connected to the inner core gear 4f, driving the inner core gear 4f to rotate synchronously with the shaft, achieving stable output with low fluctuation and low noise in the high-rigidity power transmission path, meeting the precision transmission requirements under complex working conditions; The inner core gear 4f is coaxially fixed with the outer core gear 4e through a connecting shaft to realize dual-gear power coupling transmission. The four sets of outer guide positioning shaft columns 4c are evenly distributed along the circumference, and their outer teeth are respectively engaged with the outer core gear 4e and the inner core gear 4f to form a multi-point synchronous constraint structure to suppress radial displacement and vibration during gear transmission. The inner core gear 4f and the outer core gear 4e are coaxially rigidly fixed with the connecting shaft to form a dual-gear power coupling transmission structure. The coaxial characteristics of the two gears keep them strictly synchronized during rotation, eliminating the phase difference and uneven torque distribution problems in traditional single-stage gear transmission. The four sets of outer guide positioning shaft columns 4c evenly distributed around the circumference are simultaneously engaged with the double gears through the outer teeth to form a multi-point symmetrical meshing constraint mechanism. This layout effectively disperses the load distribution on the gear meshing surface to reduce the internal wear of the motor.

[0030] The side guide shaft 4d is embedded in the external guide positioning shaft column 4c, and low-friction rotation support is achieved through silent bearings. The right end of the side guide shaft 4d is positioned by the external positioning bearing 1 4h, and the right end of the connecting shaft is fixed by the external positioning bearing 2 4j, forming a dual bearing positioning system. The integrated design of the sealed silent bearing reduces operating noise and ensures axial rotation concentricity. The integrated design of the sealed silent bearing reduces operating noise while isolating external pollutants from invading the transmission cavity. At the same time, the integrated design of the sealed silent bearing is combined with the composite elastic sealing structure to form multiple anti-pollution barriers while reducing friction resistance, blocking external particles or liquids from invading the transmission cavity. This design maintains the stability of high-precision power transmission and extends the service life of key moving parts through the synergistic effect of the low-friction support interface and the sealing component.

[0031] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A sound-insulating and noise-reducing micro motor, comprising: A shell (1) and a rear shell (6), wherein the rear side of the shell (1) is provided with a rear shell (6) for sealingly connecting the rear side of the shell (1), and the upper left end of the shell (1) is provided with a group of connecting wires (2) for connecting to an external power supply device, characterized in that: the right side of the shell (1) is provided with a group of power stabilization components (4) for stably outputting the power of the micro motor, the power stabilization components (4) and the shell (1) are fixed by bolts, the shell (1) and the rear shell (6) are fixed by bolts, the upper end of the connection between the shell (1) and the power stabilization components (4) is provided with two groups of external liquid cooling pipe heads (3) for providing continuous cooling effect for the motor, and the middle position on the right side of the power stabilization components (4) is provided with a group of drive heads (5) for outputting the power of the micro motor; The outer shell (1) includes an outer heat-conducting fin (11), an inner shell (14) and a motor cavity (15), the inner shell (14) includes a waterproof outer shell (14a), an inner sound insulation layer (14c) and an adhesive layer (14e), the waterproof outer shell (14a) is located on the outermost surface of the inner shell (14), the outer side of which is made of a waterproof coating, and the inner side is made of a waterproof polyethylene material, the inner side of the waterproof outer shell (14a) is provided with a group of insulating inner layers (14b) for ensuring the insulation effect of the inner wall of the motor cavity (15), the insulating inner layer (14b) includes an insulating tape and an insulating inner plate, the outer side of the insulating inner plate is adhered with insulating tape in multiple layers in a cross structure, and the inner side of the insulating inner plate is provided with a group of inner sound insulation layers (14c) for improving the sound insulation effect inside the motor cavity (15). The inner sound insulation layer (14c) is a high-density sound insulation board, and a hollow inner cavity is provided inside the inner sound insulation layer (14c), wherein the interior of the hollow inner cavity is a vacuum structure. A group of inner sealing layers (14d) for providing a sealing effect with the inner wall of the motor cavity (15) are provided on the rear side of the inner sound insulation layer (14c). A group of inner heat-conducting ring frames for conducting heat inside the motor cavity (15) are provided on the inner side of the inner sealing layer (14d). The inner side of the inner heat-conducting ring frame limits the position of the waterproof outer shell (14a), the insulating inner layer (14b), the inner sound insulation layer (14c), and the inner sealing layer (14d). The waterproof outer shell (14a), the insulating inner layer (14b), the inner sound insulation layer (14c), and the inner sealing layer (14d) are seamlessly bonded together by an adhesive layer (14e).

2. The sound-insulating and noise-reducing micro motor according to claim 1, characterized in that: A group of commutation channels (12) for flowing external cooling liquid is provided between each two groups of external heat-conducting fins (11) in different regions. There are four groups of commutation channels (12), and the four groups of commutation channels (12) are interconnected. A group of inner shells (14) for connecting to the four groups of external heat-conducting fins is provided on the inner side. Several groups of external connectors (13) for connecting and fixing to the power stabilizing component (4) and the rear shell (6) are provided on the left and right sides of the inner shell (14). A group of motor cavities (15) for providing power to the micro motor are provided on the inner side of the inner shell (14). The external heat-conducting fins (11) are made of an aluminum alloy material. Several groups of the external heat-conducting fins (11) constitute a group of external heat-conducting fin groups. There are four groups of the external heat-conducting fin groups, and the four groups of the external heat-conducting fin groups are arranged in a rectangular structure when viewed from the right side. A group of sealed spaces for storing cooling water is provided between the four groups of the external heat-conducting fin groups and the inner wall of the outer shell (1). The sealed space is a water-cooled inner cavity. The water-cooled inner cavity circulates external water-cooled liquid through two groups of external liquid-cooling pipe heads (3). A group of diversion water pumps for controlling water inlet and outlet are respectively provided inside the two groups of external liquid-cooling pipe heads (3).

3. The sound-insulating and noise-reducing micro motor according to claim 2, characterized in that: A group of inner sealing layers (14d) for providing a sealing effect with the inner wall of the motor cavity (15) is provided on the rear side of the inner sound insulation layer (14c); a group of inner heat-conducting ring frames for conducting heat inside the motor cavity (15) are provided on the inner side of the inner sealing layer (14d); the inner side of the inner heat-conducting ring frames limits the position of the waterproof outer shell (14a), the insulating inner layer (14b), the inner sound insulation layer (14c), and the inner sealing layer (14d); the waterproof outer shell (14a), the insulating inner layer (14b), the inner sound insulation layer (14c), and the inner sealing layer (14d) are seamlessly bonded together by an adhesive layer (14e).

4. The sound-insulating and noise-reducing micro motor according to claim 1, characterized in that: The motor cavity (15) includes a core shaft (15a), an outer sound insulation layer (15d) and a motor power component (15m). The outer sides of the left and right ends of the core shaft (15a) are respectively provided with a group of inner connecting core seats (15b) for maintaining the balance and stability of the core shaft (15a) during rotation and limiting the position of the inner positioning bearing (15h). The core shaft (15a) passes through the center position of the inner connecting core seat (15b) and a group of inner positioning bearings (15h) for maintaining the rotation stability of the core shaft (15a) are provided at the connection. The outer side of the inner connecting core seat (15b) is provided with a group of inner positioning bearings (15h) for maintaining the rotation stability of the core shaft (15a). An outer sound insulation layer (15d) for isolating the internal noise of the motor cavity (15); the outer sound insulation layer (15d) and the inner connecting core seat (15b) are interlocked and fixed to the front heat-conducting shell (15e) by a plurality of groups of bolts; the front heat-conducting shell (15e) and the inner connecting core seat (15b) are an integral structure; the interior of the front heat-conducting shell (15e) is provided with a plurality of groups of heat dissipation holes (15c) for dissipating heat to the outside in an annular structure; the front heat-conducting shell (15e) has a convex cross-section when viewed from above and is arranged symmetrically with the rear heat-conducting shell (15f).

5. The sound-insulating and noise-reducing micro motor according to claim 4, characterized in that: The rear heat-conducting shell (15f) and the front heat-conducting shell (15e) have the same specifications. The front heat-conducting shell (15e) and the rear heat-conducting shell (15f) are connected and fixed by a plurality of groups of bolts. A group of motor power components (15m) for rotating between the rotor and the stator (m1) are provided inside the front heat-conducting shell (15e) and the rear heat-conducting shell (15f). A group of heat dissipation areas (15i) for dissipating heat inside the motor power component (15m) are provided on the left and right sides respectively. Each group of the heat dissipation areas (15i) is interconnected with a plurality of groups of heat dissipation holes (15c). Each group of the heat dissipation areas A group of built-in disks (15j) for loading annular thermal protection devices (15l) are provided inside (15i), and a group of inner positioning bearings (15k) for maintaining stable rotation of the core shaft (15a) are provided inside the built-in disk (15j). The inner positioning bearings (15k) and the built-in disk (15j) are an integrated structure. A group of annular thermal protection devices (15l) are provided inside the built-in disk (15j), and the annular thermal protection devices (15l) include a PTC thermistor and a dedicated protector of a related model. The resistance signal of the PTC thermistor is transmitted to the dedicated protector to achieve precise overload and phase loss protection.

6. The sound-insulating and noise-reducing micro motor according to claim 5, characterized in that: The motor power component (15m) includes a stator (m1), a three-phase star coil (m2), an inner rotor (m3), a varistor (m4) and a rotor stator core (m5). The stator (m1) is provided with a plurality of groups, wherein the plurality of groups of stators (m1) are in an integrated structure. A group of three-phase star coils (m2) is wound around the outside of each group of stators (m1). The stator (m1) inside the three-phase star coils (m2) adopts a multi-slot structure and is symmetrically distributed at an electrical angle of 120°. A plurality of groups of varistors (m4) for clamping the voltage to a safety threshold to prevent breakdown of windings or electronic components are provided on the inner side of the stator (m1); a group of inner rotors (m3) for driving the core shaft (15a) to rotate are provided on the inner side of the varistors (m4); a group of rotor stators (m5) for maintaining their positioning connection are provided at the connection between the inner rotor (m3) and the core shaft (15a); the rotor stators (m5), the plurality of groups of stators (m1) and the inner rotor (m3) are all made of a permanent magnetic material.

7. The sound-insulating and noise-reducing micro motor according to claim 4, characterized in that: The right side of the core shaft (15a) is dynamically connected to the power stabilizing assembly (4), and the power stabilizing assembly (4) includes a rear sealing shell (4a), an inner transmission chamber (4b), an outer guide positioning shaft (4c), an outer core gear (4e), an inner core gear (4f) and an outer positioning bearing (4j). The rear sealing shell (4a) has the same specifications as the outer sealing shell (4i). The rear sealing shell (4a) is fixed to the right side of the outer shell (1) by bolts. A group of outer sealing shells (4i) for keeping the inside of the inner transmission chamber (4b) sealed are provided on the right side of the rear sealing shell (4a). The outer sealing shells (4i) have the same specifications as the rear sealing shell (4a) and are connected and fixed in a symmetrical manner. The right side of the core shaft (15a) passes through the center position of the rear sealing shell (4a) and is connected and fixed to the center position of the left side of the inner core gear (4f). A group of connecting shafts are provided in the middle position of the right side of the inner core gear (4f).

8. The sound-insulating and noise-reducing micro motor according to claim 7, characterized in that: A group of outer core gears (4e) for power connection with the connecting shaft is provided on the outside of the middle position of the connecting shaft and is fixedly connected to the outside of the connecting shaft. The outer core gear (4e) and the inner core gear (4f) are coaxially arranged and rotate synchronously. The outer teeth structure of the outer core gear (4e) and the inner core gear (4f) are the same, and four groups of outer guide positioning shaft columns (4c) for maintaining the rotation stability of the outer core gear (4e) and the inner core gear (4f) are evenly distributed on the outside. The length of the outer guide positioning shaft columns (4c) is greater than the sum of the lengths of the outer core gear (4e) and the inner core gear (4f). The outer sides of the four groups of outer guide positioning shaft columns (4c) are all provided with teeth, and the outer core gear (4e) and the inner core gear (4f) are evenly meshed with each other.

9. The sound-insulating and noise-reducing micro motor according to claim 8, characterized in that: Each group of the outer guide positioning shaft columns (4c) is provided with a group of side guide shafts (4d) on the inner side thereof for maintaining the positioning rotation thereof, and a plurality of groups of silent bearings are provided between each group of the side guide shafts (4d) and the corresponding outer guide positioning shaft columns (4c) thereof. A group of outer positioning bearings (4h) for maintaining the positioning rotation of the side guide shafts (4d) is provided on the outer side of the right end thereof, and the right side of the side guide shaft (4d) is connected and fixed to the inner side of the outer positioning bearing (4h). A group of outer positioning bearings (4j) for maintaining the rotation stability thereof is provided on the outer side of the right end thereof, and both the outer positioning bearings (4j) and (4h) are sealed silent bearings.

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