Double inner gear ring type noise reduction curtain motor

Abstract

The utility model discloses a double inner tooth circle formula noise reduction window curtain motor, including drive motor and gear drive subassembly, gear drive subassembly one end is connected with drive motor, and the other end is used for with external transmission member transmission connection, gear drive subassembly includes connecting casing and the multistage reduction gear group of being located at the inside of connecting casing, be equipped with first inner tooth ring and second inner tooth ring on the inner wall of connecting casing, and first inner tooth ring and multistage reduction gear group's input stage gear meshing transmission, and second inner tooth ring and multistage reduction gear group's output stage gear meshing transmission, wherein, first inner tooth ring and second inner tooth ring all adopt non -metallic material to make. Thus, through non -metallic material makes first inner tooth ring and second inner tooth ring, and make input stage and output stage all have flexible meshing characteristic in transmission process. Meanwhile, non -metallic tooth ring material has good damping and self -lubricating characteristics, reduces the rigid friction between metal tooth surface, reduces transmission noise and promotes the running smoothness of system.

Description

Technical Field

[0001] This utility model relates to the field of motor technology, specifically to a double internal gear ring type noise reduction curtain motor. Background Technology

[0002] Existing curtain motors typically control the opening and closing of curtains by using a drive motor to power a gear transmission assembly. To ensure transmission strength and lifespan, traditional gear transmission assemblies often employ metal gears or metal internal gear rings. While metal materials offer high strength and wear resistance, they also present significant noise issues during actual use.

[0003] Specifically, when metal gears mesh at high speeds or under load, the hard contact between the tooth surfaces generates strong mechanical impact and meshing noise. This noise is particularly amplified in home environments like curtain motors, impacting the user experience. Furthermore, friction between the metal gears causes micro-vibrations, further leading to resonance and resulting in a harsh "humming" or meshing sound from the entire motor during operation. To reduce noise, some products attempt to mitigate it by adding lubricant, sound insulation, or vibration damping pads. However, these methods not only increase production costs but also fail to fundamentally solve the noise source problem caused by metal meshing.

[0004] Therefore, there is an urgent need for a gear transmission structure that can effectively reduce meshing noise while taking into account transmission stability and durability, so that the curtain motor can achieve a smooth and quiet transmission effect during operation, thereby improving user comfort and product quality. Utility Model Content

[0005] To overcome the shortcomings of the prior art, this invention provides a dual internal gear ring type noise-reducing curtain motor. By setting a first internal gear ring and a second internal gear ring made of non-metallic material at the input and output ends of the gear transmission assembly, both the input and output stages in the transmission process possess flexible meshing characteristics. Simultaneously, the non-metallic gear ring material has good damping and self-lubricating properties, reducing rigid friction between metal tooth surfaces, lowering transmission noise, and improving the smoothness of system operation.

[0006] The technical solution adopted by this utility model to solve its problem is: A double internal gear ring type noise reduction curtain motor includes: Drive motor; A gear transmission assembly, one end of which is connected to the drive motor, and the other end is used for transmission connection with an external transmission component; the gear transmission assembly includes a connecting housing and a multi-stage reduction gear set disposed inside the connecting housing; a first internal gear ring and a second internal gear ring are provided on the inner wall of the connecting housing, the first internal gear ring meshes with the input stage gear of the multi-stage reduction gear set, and the second internal gear ring meshes with the output stage gear of the multi-stage reduction gear set; Both the first internal gear ring and the second internal gear ring are made of non-metallic materials.

[0007] Furthermore, a first groove is provided on the inner wall of one end of the connecting housing, a first slot is provided in the first groove, a first locking block is provided on the first internal gear ring corresponding to the position of the first slot, the first internal gear ring is engaged in the first groove, and the first locking block is engaged in the first slot.

[0008] Furthermore, multiple first slots are arranged at intervals along the circumference of the first groove, and multiple first blocks are arranged at intervals along the circumference of the first internal gear ring.

[0009] Furthermore, the inner wall of the other end of the connecting housing is provided with a second groove, the second groove is provided with a second slot, the second internal gear ring is provided with a second locking block corresponding to the position of the second slot, the second internal gear ring is engaged in the second groove, and the second locking block is engaged in the second slot.

[0010] Furthermore, multiple second slots are arranged at intervals along the circumference of the second groove, and multiple second blocks are arranged at intervals along the circumference of the second internal gear ring.

[0011] Furthermore, the internal teeth of the first internal gear ring are helical teeth, and the internal teeth of the second internal gear ring are straight teeth.

[0012] Furthermore, one end of the connecting housing is provided with a first fastening position, and the other end is provided with a second fastening position; It also includes a first connector and a second connector. One end of the first connector is fixedly connected to the output end face of the drive motor, and the other end of the first connector is provided with a third fastening position that is fastened to the first fastening position. One end of the second connector is provided with a fourth fastening position that is fastened to the second fastening position.

[0013] Furthermore, the first and second fastening positions are arranged in multiples at intervals along the circumference of the connector, and the third fastening position is arranged in multiples at intervals along the circumference of the first connector, with each third fastening position corresponding to one of the first fastening positions. The fourth fastener is arranged in multiple positions at intervals along the circumference of the second connector, and each fourth fastener corresponds to a second fastener.

[0014] Furthermore, the first connector is provided with a first through hole opened along the axial direction, and a connecting sleeve is assembled in the first through hole. The connecting sleeve is used to drively connect the output shaft of the drive motor to the input stage of the multi-stage reduction gear set. The second connector is provided with a second through hole along the axial direction. The second through hole is used for the output stage of the multi-stage reduction gear set to pass through and connect with an external transmission component.

[0015] Furthermore, the output end face of the drive motor is provided with a positioning hole and a screw hole, one end of the first connector is provided with a positioning post for positioning and connecting with the positioning hole, and the first connector is also provided with a mounting hole for fasteners to pass through and be fastened to the screw hole, so as to fix the first connector on the output end face of the drive motor.

[0016] In summary, this utility model has the following technical effects: 1. The present invention relates to a double internal gear ring type noise reduction curtain motor, which uses a first internal gear ring and a second internal gear ring made of non-metallic materials (such as high-strength engineering plastics or composite polymers) to significantly reduce the contact stiffness during gear meshing, thereby effectively absorbing impact energy and mitigating the instantaneous impact when the tooth surfaces collide; at the same time, non-metallic materials have good self-lubricating and damping characteristics, which can reduce rigid friction and vibration transmission between metal tooth surfaces, reduce resonance effects and improve the smoothness of system operation.

[0017] 2. This utility model relates to a double internal gear ring type noise-reducing curtain motor. By setting a first internal gear ring and a second internal gear ring made of non-metallic materials at the input and output ends of the gear transmission assembly, both the input and output stages of the transmission process possess flexible meshing characteristics. The first internal gear ring can effectively absorb the impact force during motor startup in the initial meshing stage of the drive motor output, reducing meshing noise. The second internal gear ring further buffers the vibration and meshing impact of the multi-stage gears in the transmission output stage, enabling a smooth transition of the entire transmission. During operation, it can achieve a smooth transmission effect with low noise and low vibration, significantly improving user comfort and the overall service life of the motor, and providing a quieter and lighter structural solution for home electric curtains.

[0018] 3. This utility model of a double internal gear ring type noise reduction curtain motor can achieve smooth and quiet operation while maintaining transmission accuracy and service life, greatly improving the working comfort and overall quality of the curtain motor. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the double internal gear ring type noise reduction curtain motor of this utility model; Figure 2This is a cross-sectional schematic diagram of the double internal gear ring type noise-reducing curtain motor of this utility model; Figure 3 This is a schematic diagram of the multi-stage reduction gear set in the double internal gear ring type noise reduction curtain motor of this utility model; Figure 4 This is a schematic diagram of the connecting housing from one perspective in the double internal gear ring type noise reduction curtain motor of this utility model; Figure 5 This is a schematic diagram of the connecting housing from a second perspective in the double internal gear ring type noise reduction curtain motor of this utility model; Figure 6 This is a schematic diagram of the structure of the first internal gear ring in the double internal gear ring type noise reduction curtain motor of this utility model; Figure 7 This is a schematic diagram of the structure of the second internal gear ring in the double internal gear ring type noise reduction curtain motor of this utility model; Figure 8 This is a partially exploded schematic diagram of the double internal gear ring type noise reduction curtain motor of this utility model; Figure 9 This is a schematic diagram of the structure of the first connecting component in the double internal gear ring type noise reduction curtain motor of this utility model; Figure 10 This is a schematic diagram of the structure of the second connecting component in the double internal gear ring type noise-reducing curtain motor of this utility model.

[0020] The meanings of the reference numerals in the attached figures are as follows: 1. Drive motor; 11. Positioning hole; 12. Connecting sleeve; 13. Screw hole; 2. First connecting piece; 21. Positioning pin; 22. First through hole; 23. Mounting hole; 24. Third groove; 25. First fastener; 26. Third locking block; 27. First fixing hole; 28. Fastener; 3. Connecting housing; 31. Internal tooth; 32. First groove; 321. First slot; 33. First protrusion; 331. First limiting groove; 34. Third slot; 35. Second groove; 351. Second slot; 36. Second protrusion; 361. Second limiting groove; 37. Fourth slot; 4. Second connector; 41. Second through hole; 42. Fourth groove; 43. Second buckle block; 44. Fourth locking block; 45. Second fixing hole; 5. First internal gear ring; 51. First locking block; 52. Helical gear; 6. Second internal gear ring; 61. Second locking block; 62. Straight gear; 7. Multi-stage reduction gear set; 8. Guide slope. Detailed Implementation

[0021] To better understand and implement this invention, the technical solutions in the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings.

[0022] In the description of this utility model, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the module or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0024] like Figure 1-10 The illustrated dual internal gear ring type noise-reducing curtain motor includes a drive motor 1 and a gear transmission assembly. One end of the gear transmission assembly is connected to the drive motor 1, and the other end is used for transmission connection with an external transmission component. The gear transmission assembly includes a connecting housing 3 and a multi-stage reduction gear set 7 disposed inside the connecting housing 3. The connecting housing 3 is provided with internal teeth 31 that mesh with the multi-stage reduction gear set 7. A first internal gear ring 5 and a second internal gear ring 6 are provided on the inner wall of the connecting housing 3. The first internal gear ring 5 meshes with the input stage gear of the multi-stage reduction gear set 7, and the second internal gear ring 6 meshes with the output stage gear of the multi-stage reduction gear set 7. The first internal gear ring 5 and the second internal gear ring 6 are both made of non-metallic materials.

[0025] Therefore, by setting the first internal gear ring 5 and the second internal gear ring 6 made of non-metallic materials, the input and output stages of the multi-stage reduction gear set 7 form a flexible meshing relationship during transmission, thereby effectively reducing the impact rigidity between gears. Non-metallic materials themselves have good damping and self-lubricating properties, which can significantly reduce the meshing friction between metal tooth surfaces, reduce operating noise, and improve the smoothness and service life of transmission, thus improving the overall quietness of the curtain motor. It should be noted that the first internal gear ring 5 and the second internal gear ring 6 can be made of non-metallic materials such as high-strength engineering plastics or composite polymers. These non-metallic materials not only have high mechanical strength and wear resistance, and can maintain stable tooth profile accuracy during long-term meshing transmission, but also have good elasticity and damping characteristics, which can effectively absorb micro-vibrations and impact forces during gear meshing, thereby significantly reducing operating noise. In addition, non-metallic materials usually have good self-lubricating properties, which can reduce the dependence on grease, reduce wear, and extend the service life of transmission components, so that the entire curtain motor can maintain a stable and quiet operation even under long-term working conditions.

[0026] See Figure 4-5 The inner wall of one end of the connecting housing 3 is provided with a first groove 32, and a first slot 321 is provided in the first groove 32. A first locking block 51 that cooperates with the first slot 321 is provided on the outer circumferential surface of the first internal gear ring 5. The first internal gear ring 5 is embedded in the first groove 32, and is reliably locked and fixed to the inner wall of the connecting housing 3 through the cooperation of the first locking block 51 and the first slot 321.

[0027] Specifically, multiple first slots 321 are arranged circumferentially along the first groove 32, and multiple first blocks 51 are arranged circumferentially along the outer circumferential surface of the first internal gear ring 5. Each first block 51 corresponds to a first slot 321, thereby achieving uniform force distribution and improving assembly concentricity and the stability of the positioning connection of the first internal gear ring 5.

[0028] Furthermore, the inner wall of the other end of the connecting housing 3 is provided with a second groove 35, and a second slot 351 is provided in the second groove 35. A second locking block 61 that cooperates with the second slot 351 is provided on the outer circumferential surface of the second internal gear ring 6. The second internal gear ring 6 is locked in the second groove 35, and is securely locked and fixed to the inner wall of the connecting housing 3 through the cooperation of the second locking block 61 and the second slot 351.

[0029] Specifically, multiple second slots 351 are arranged at intervals along the circumference of the second groove 35, and multiple second blocks 61 are arranged at intervals along the circumference of the second internal gear ring 6 on the outer circumferential surface of the second internal gear ring 6, with each second block 61 corresponding to a second slot 351, so as to further improve the installation accuracy and reduce the operation deviation.

[0030] In another embodiment, the bottoms of the first locking block 51 and the second locking block 61 can be designed as transitional arc surfaces to avoid stress concentration during assembly and reduce the transmission of housing noise caused by gear meshing vibration during operation. Simultaneously, the arc transition structure can also form a flexible buffer during engagement, making the assembly of the first internal gear ring 5 and the second internal gear ring 6 smoother, thereby further reducing the propagation path of meshing noise sources structurally.

[0031] In this embodiment, the internal teeth of the first internal gear ring 5 are helical teeth 52, and the internal teeth of the second internal gear ring 6 are straight teeth 62. The helical tooth 52 structure can achieve smooth meshing and noise reduction at the input end, while the straight tooth 62 structure facilitates stable torque transmission at the output end, thus achieving a balance between noise control and transmission efficiency.

[0032] Furthermore, the connecting housing 3 has a first fastening position at one end and a second fastening position at the other end; it also includes a first connecting member 2 and a second connecting member 4. One end of the first connecting member 2 is fixedly connected to the output end face of the drive motor 1, and the other end has a third fastening position that engages with the first fastening position; one end of the second connecting member 4 has a fourth fastening position that engages with the second fastening position. Through the above fastening structure, the drive motor 1 and the gear transmission assembly can be quickly assembled and securely connected, reducing the number of threaded fasteners used and facilitating disassembly and maintenance.

[0033] Furthermore, multiple first and second fasteners are arranged at intervals along the circumference of the connector, multiple third fasteners are arranged at intervals along the circumference of the first connector 2, and each third fastener corresponds to a first fastener; multiple fourth fasteners are arranged at intervals along the circumference of the second connector 4, and each fourth fastener corresponds to a second fastener, thereby achieving multi-point circumferential locking and improving the overall strength and vibration resistance of the structure.

[0034] In this embodiment, one end of the connecting housing 3 is provided with a first protrusion 33, the first fastening position is a first limiting groove 331 opened on the first protrusion 33, and a third slot 34 is provided between two adjacent first protrusions 33. The first connecting member 2 is provided with a third groove 24, the third fastening position is a first fastening block 25 provided in the third groove 24, and a third locking block 26 is provided between two adjacent third grooves 24 to engage with the third slot 34. The first connecting member 2 is also provided with a first fixing hole 27 for fixing the outer shell on the third locking block 26.

[0035] In this embodiment, the other end of the connecting housing 3 is provided with a second protrusion 36, the second fastening position is a second limiting groove 361 opened on the second protrusion 36, and a fourth slot 37 is provided between two adjacent second protrusions 36. The second connecting member 4 is provided with a fourth groove 42, the fourth fastening position is a second fastening block 43 provided in the fourth groove 42, and a fourth locking block 44 is provided between two adjacent fourth grooves 42 to engage with the fourth slot 37. The second connecting member 4 is also provided with a second fixing hole 45 for fixing the outer shell on the fourth locking block 44. It should be noted that in this embodiment, both the first buckle block 25 and the second buckle block 43 are provided with guide slopes 8, which are used to guide the buckle blocks to slide smoothly into the limiting groove during the assembly process, so as to achieve quick alignment and smooth assembly and reduce assembly resistance.

[0036] See Figure 9-10The first connecting member 2 is provided with a first through hole 22 opened along the axial direction. A connecting sleeve 12 is installed in the first through hole 22. The connecting sleeve 12 is used to drive the output shaft of the drive motor 1 to the input stage of the multi-stage reduction gear set 7. The second connecting member 4 is provided with a second through hole 41 opened along the axial direction. The second through hole 41 is used for the output stage of the multi-stage reduction gear set 7 to pass through and connect to the external transmission component. This structure can ensure the coaxiality of the power transmission path, reduce sway and energy loss, and improve transmission efficiency.

[0037] See Figure 8 The output end face of the drive motor 1 is provided with a positioning hole 11 and a screw hole 13. One end of the first connector 2 is provided with a positioning post 21 for positioning and connecting with the positioning hole 11. The first connector 2 is also provided with a mounting hole 23 for fasteners 28 to pass through and be fastened to the screw hole 13, so as to fix the first connector 2 on the output end face of the drive motor 1, ensure accurate assembly position and improve the stability of the overall structure.

[0038] It should be noted that in this embodiment, the mounting hole 23 can be either a through hole or a screw hole, so as to make flexible selection according to different assembly methods and structural strength requirements, thereby improving the versatility and assembly convenience of the parts.

[0039] In another embodiment, the first connector 2 can be integrally die-cast from aluminum alloy, with micro-protruding positioning ribs formed on the surface in contact with the drive motor 1. These positioning ribs can form surface contact with the end face of the drive motor 1 during fastening, improving assembly positioning accuracy and enhancing structural rigidity. Simultaneously, the aluminum alloy material has good heat dissipation properties, which can help reduce the temperature rise in the gear transmission area during long-term operation, avoiding changes in meshing clearance due to thermal expansion, thereby maintaining stable low-noise operating characteristics.

[0040] Specifically, when metal gears operate at high speeds or under heavy loads, the rigid contact between the tooth surfaces easily generates noticeable mechanical impact and meshing noise. Simultaneously, the friction generated during gear meshing induces minute vibrations, further exciting the motor housing to resonate, resulting in a harsh "humming" sound during operation, severely impacting the user experience in a home environment. To address these issues, the first internal gear ring 5 and the second internal gear ring 6 mesh with corresponding gears in the multi-stage reduction gear set 7, and both are made of non-metallic materials (such as high-strength engineering plastics or composite polymers). This material possesses excellent elasticity and damping characteristics, absorbing some impact energy and weakening the vibration transmission path during gear meshing, thereby effectively reducing noise levels.

[0041] At the same time, the non-metallic gear ring can reduce metal friction and wear while ensuring transmission accuracy and stability, improve the service life and long-term operation stability of the gear transmission system, and enable the drive motor 1 to maintain a quiet and smooth working state during start-up, shutdown and continuous operation.

[0042] In summary, the present invention, a double internal gear ring type noise-reducing curtain motor, significantly reduces the contact stiffness during gear meshing by using a first internal gear ring 5 and a second internal gear ring 6 made of non-metallic materials. This effectively absorbs impact energy and mitigates the instantaneous impact during tooth surface collision. At the same time, non-metallic materials have good self-lubricating and damping properties, which can reduce rigid friction and vibration transmission between metal tooth surfaces, reduce resonance effects, and improve the smoothness of system operation.

[0043] This utility model relates to a double internal gear ring type noise-reducing curtain motor. By setting a first internal gear ring 5 and a second internal gear ring 6 made of non-metallic materials at the input and output ends of the gear transmission assembly, both the input and output stages of the transmission process have flexible meshing characteristics. The first internal gear ring 5 can effectively absorb the impact force of the drive motor 1 during startup in the initial meshing stage of the drive motor 1, reducing meshing noise. The second internal gear ring 6 further buffers the vibration and meshing impact of the multi-stage gears in the transmission output stage, enabling a smooth transition of the entire transmission. During operation, it can achieve a smooth transmission effect with low noise and low vibration, significantly improving user comfort and the overall service life of the motor, and providing a quieter and lighter structural solution for home electric curtains.

[0044] This utility model of a double internal gear ring type noise reduction curtain motor can achieve smooth and quiet operation while maintaining transmission accuracy and service life, greatly improving the working comfort and overall quality of the curtain motor.

[0045] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on the other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to the other component.

[0046] It should be understood that the terms "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the module or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0047] Furthermore, in the description of this utility model, "multiple" and "several" mean two or more, unless otherwise explicitly specified.

[0048] The technical means disclosed in this utility model are not limited to those disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications are also considered within the scope of protection of this utility model.

Claims

1. A double internal gear ring type noise-reducing curtain motor, characterized in that, include: Drive motor; A gear transmission assembly, one end of which is connected to the drive motor, and the other end is used for transmission connection with an external transmission component; the gear transmission assembly includes a connecting housing and a multi-stage reduction gear set disposed inside the connecting housing; a first internal gear ring and a second internal gear ring are provided on the inner wall of the connecting housing, the first internal gear ring meshes with the input stage gear of the multi-stage reduction gear set, and the second internal gear ring meshes with the output stage gear of the multi-stage reduction gear set; Both the first internal gear ring and the second internal gear ring are made of non-metallic materials.

2. The double internal gear ring type noise-reducing curtain motor according to claim 1, characterized in that, The inner wall of one end of the connecting housing is provided with a first groove, and a first slot is provided in the first groove. The first internal gear ring is provided with a first locking block at the position corresponding to the first slot. The first internal gear ring is locked in the first groove, and the first locking block is locked in the first slot.

3. The double internal gear ring type noise-reducing curtain motor according to claim 2, characterized in that, Multiple first slots are arranged at intervals along the circumference of the first groove, and multiple first blocks are arranged at intervals along the circumference of the first internal gear ring.

4. The double internal gear ring type noise-reducing curtain motor according to claim 3, characterized in that, The inner wall of the other end of the connecting housing is provided with a second groove, and a second slot is provided in the second groove. The second internal gear ring is provided with a second locking block corresponding to the position of the second slot. The second internal gear ring is locked in the second groove, and the second locking block is locked in the second slot.

5. The double internal gear ring type noise-reducing curtain motor according to claim 4, characterized in that, Multiple second slots are arranged at intervals along the circumference of the second groove, and multiple second blocks are arranged at intervals along the circumference of the second internal gear ring.

6. The double internal gear ring type noise-reducing curtain motor according to claim 1, characterized in that, The internal teeth of the first internal gear ring are helical teeth, and the internal teeth of the second internal gear ring are straight teeth.

7. The double internal gear ring type noise-reducing curtain motor according to claim 1, characterized in that, One end of the connecting housing is provided with a first fastening position, and the other end is provided with a second fastening position; It also includes a first connector and a second connector. One end of the first connector is fixedly connected to the output end face of the drive motor, and the other end of the first connector is provided with a third fastening position that is fastened to the first fastening position. One end of the second connector is provided with a fourth fastening position that is fastened to the second fastening position.

8. The double internal gear ring type noise-reducing curtain motor according to claim 7, characterized in that, The first and second fastening positions are arranged in multiples at intervals along the circumference of the connector; the third fastening positions are arranged in multiples at intervals along the circumference of the first connector, and each third fastening position corresponds to one of the first fastening positions. The fourth fastener is arranged in multiple positions at intervals along the circumference of the second connector, and each fourth fastener corresponds to a second fastener.

9. The double internal gear ring type noise-reducing curtain motor according to claim 7, characterized in that, The first connector has a first through hole along the axial direction, and a connecting sleeve is fitted in the first through hole. The connecting sleeve is used to drively connect the output shaft of the drive motor to the input stage of the multi-stage reduction gear set. The second connector is provided with a second through hole along the axial direction. The second through hole is used for the output stage of the multi-stage reduction gear set to pass through and connect with an external transmission component.

10. The double internal gear ring type noise-reducing curtain motor according to claim 9, characterized in that, The output end face of the drive motor is provided with a positioning hole and a screw hole. One end of the first connector is provided with a positioning post for positioning and connecting with the positioning hole. The first connector is also provided with a mounting hole for fasteners to pass through and be fastened to the screw hole, so as to fix the first connector on the output end face of the drive motor.

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