Double-stator motor output connection mechanism

Abstract

The utility model relates to power motor technical field, especially a kind of double-stator motor output connecting mechanism, including shell, output fixed seat, double-stator driving device, output transmission device and output connecting seat, shell is provided with drive cavity, double-stator driving device is set in drive cavity, output fixed seat is set in the side of drive cavity and covers drive cavity, output fixed seat is provided with transmission cavity, the driving end of double-stator driving device extends to transmission cavity, output transmission device is set in transmission cavity, and is connected with the driving end of double-stator driving device, output connecting seat is set in the end of transmission cavity, and is connected with output transmission device;Double-stator driving device is used to drive output transmission device, to drive output connecting seat to rotate.The utility model drive and transmission space separate, it is favorable for the independent installation and maintenance of each component, while effectively using axial space, reduce the radial dimension of overall structure, suitable for the occasion of limited installation space.

Description

Technical Field

[0001] This utility model relates to the field of power motor technology, and in particular to a dual-stator motor output connection mechanism. Background Technology

[0002] In modern industrial equipment, precision instruments, and automated devices, the performance requirements for drive systems are becoming increasingly stringent. These systems not only need high power density and high torque output, but also require compact structure, efficient transmission, and reliable connection. Dual-stator motors, as an advanced electromagnetic drive device, utilize a unique dual-stator structure to generate significantly higher torque and power than traditional single-stator motors within the same volume, thus demonstrating a significant advantage in the field of high-performance drives.

[0003] However, efficiently and reliably transmitting the high-performance power of a dual-stator motor to an external load is a key challenge in practical applications. Traditional output connection mechanisms often have the following limitations: First, the drive unit and transmission mechanism are mostly separate designs, connected by couplings and other components, resulting in excessively long axial dimensions and an insufficiently compact structure, making it difficult to meet the installation requirements of space-constrained environments; second, a longer transmission chain introduces additional assembly errors, clearances, and rotational inertia, affecting the transmission accuracy, rigidity, and dynamic response speed, and may generate vibration and noise; third, simple through-shaft output structures lack effective sealing and protection for the internal components of the motor, making them susceptible to dust and moisture corrosion under harsh operating conditions, affecting long-term operational reliability. Utility Model Content

[0004] To solve the above problems, this utility model separates the drive and transmission spaces, which is beneficial for the independent installation and maintenance of each component. At the same time, it effectively utilizes the axial space and reduces the radial dimension of the overall structure, making it suitable for dual-stator motor output connection mechanisms in situations where installation space is limited.

[0005] The technical solution adopted by this utility model is as follows: a dual-stator motor output connection mechanism, including a housing, an output fixing seat, a dual-stator drive device, an output transmission device, and an output connecting seat. The housing is provided with a drive cavity, the dual-stator drive device is disposed in the drive cavity, the output fixing seat is disposed on one side of the drive cavity and covers the drive cavity, the output fixing seat is provided with a transmission cavity, the drive end of the dual-stator drive device extends into the transmission cavity, the output transmission device is disposed in the transmission cavity and connected to the drive end of the dual-stator drive device, and the output connecting seat is disposed at one end of the transmission cavity and connected to the output transmission device; the dual-stator drive device is used to drive the output transmission device to drive the output connecting seat to rotate.

[0006] A further improvement to the above solution is that the outer periphery of the housing is provided with multiple heat dissipation grooves, which are used to dissipate heat from the dual-stator drive device inside the drive cavity.

[0007] A further improvement to the above solution is that a connecting inner ring and a connecting outer ring are provided on one side of the output fixing base. The connecting outer ring is fixedly connected to the outer shell, and the connecting inner ring is provided with a first bearing and is connected to the dual stator drive device through the first bearing.

[0008] A further improvement to the above scheme is that the dual-stator drive device includes a first stator assembly, a second stator assembly, a rotor support, a rotor assembly, and a fixed main shaft. The first stator assembly is disposed on the inner wall of the drive cavity, the fixed main shaft is disposed at the axis of the drive cavity, the second stator assembly is disposed on the fixed main shaft, the rotor support is used to fix the rotor assembly and is provided with an output shaft, the output shaft is connected to an output transmission device, and the two sides of the rotor assembly are respectively opposite to the first stator assembly and the second stator assembly.

[0009] A further improvement to the above scheme is that the rotor support includes an upper support and a lower support, the rotor assembly is provided with a rotor fixing frame and multiple rotor magnets, and the rotor magnets are disposed on the rotor fixing frame; the upper support and the lower support are respectively used to fix the two sides of the rotor fixing frame.

[0010] A further improvement to the above scheme is that the upper support is provided with a second bearing, the lower support is provided with a third bearing, the upper support is connected to the fixed spindle through the second bearing, and the lower support is connected to the fixed spindle through the third bearing.

[0011] A further improvement to the above scheme is that the output transmission device includes a sun gear, planetary gears, and a gear ring. The gear ring is fixedly disposed in the transmission cavity. The sun gear is connected to the drive end of the dual stator drive device. The planetary gears are disposed on the output connector and mesh with the sun gear and the gear ring respectively.

[0012] A further improvement to the above solution is that an end cap is provided at the end of the output fixing seat, the end cap is used to cover the transmission cavity, the end cap is provided with a fourth bearing, and the end cap is connected to the output connecting seat through the fourth bearing.

[0013] A further improvement to the above solution is that the output connector is provided with a transmission fixing part, and the output transmission device is mounted on the transmission fixing part.

[0014] A further improvement to the above solution is that the output connector is provided with an output mounting hole and an output positioning shaft for connecting the output load.

[0015] The beneficial effects of this utility model are: Compared to existing dual-stator motor output structures, this invention achieves a functional partitioned layout, resulting in a compact structure and high integration by placing the dual-stator drive device within the drive cavity of the housing and the output transmission device within the transmission cavity of the output mounting base. The separation of drive and transmission spaces facilitates independent installation and maintenance of each component, while effectively utilizing axial space and reducing the overall radial dimension, making it suitable for applications with limited installation space. The dual-stator drive device employs a dual-stator design, offering higher power density and torque output capability compared to traditional single-stator motors, providing a more stable and powerful drive source. Its drive end extends to the transmission cavity and connects directly to the output transmission device, resulting in a short transmission path, low energy loss, high transmission efficiency, and fast response speed. The output mounting base not only serves as the load-bearing structure for the transmission cavity but also covers the drive cavity, combining sealing and support functions to improve the rigidity and stability of the overall structure. The output connector, as the final power output interface, is structurally reliable and facilitates connection to external actuators, enhancing the practicality and adaptability of the mechanism. This utility model features a reasonable layout, efficient transmission, and robust structure, making it particularly suitable for power transmission scenarios requiring high torque and high precision, and thus possessing significant engineering application value. Attached Figure Description

[0016] Figure 1 This is a three-dimensional schematic diagram of the output connection mechanism of the dual stator motor of this utility model; Figure 2 for Figure 1 Front view schematic diagram of the output connection mechanism of a double stator motor; Figure 3 for Figure 2 Sectional view of AA; Figure 4 for Figure 1 Exploded view of the output connection mechanism of a dual-stator motor; Figure 5 for Figure 1 An exploded view of the output connection mechanism of a dual-stator motor from another perspective.

[0017] Explanation of reference numerals in the attached drawings: 1. Housing; 11. Drive cavity; 12. Heat dissipation groove; 2. Output mounting base; 2. Transmission cavity; 21. Inner connecting ring; 22. Outer connecting ring; 23. First bearing; 24. End cover; 25. Fourth bearing; 251. Dual stator drive device; 3. First stator assembly; 31. Second stator assembly; 32. Rotor support; 33. Output shaft; 331. Upper support; 332. Lower support; 333. Rotor assembly; 34. Rotor mounting bracket; 341. Rotor magnet; 342. Fixed spindle; 35. Output transmission device; 4. Sun gear; 41. Planetary gear; 42. Gear ring; 43. Output connecting base; 5. Transmission fixing part; 51. Output mounting hole; 52. Output positioning shaft; 53. Detailed Implementation

[0018] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. Preferred embodiments of this utility model are shown in the drawings. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this utility model.

[0019] It should be noted that when a component is said to be "fixed to" another component, it can be directly attached to the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component.

[0020] 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. Figures 1-5As shown, in one embodiment of this utility model, a dual-stator motor output connection mechanism is provided, including a housing 1, an output fixing seat 2, a dual-stator drive device 3, an output transmission device 4, and an output connecting seat 5. The housing 1 is provided with a drive cavity 11, the dual-stator drive device 3 is disposed in the drive cavity 11, the output fixing seat 2 is disposed on one side of the drive cavity 11 and covers the drive cavity 11, the output fixing seat 2 is provided with a transmission cavity 21, the drive end of the dual-stator drive device 3 extends into the transmission cavity 21, the output transmission device 4 is disposed in the transmission cavity 21 and connected to the drive end of the dual-stator drive device 3, and the output connecting seat 5 is disposed at one end of the transmission cavity 21 and connected to the output transmission device 4. The dual-stator drive device 3 is used to drive the output transmission device 4 to drive the output connecting seat 5 to rotate. This embodiment achieves a functional partition layout, compact structure, and high integration by placing the dual-stator drive device 3 in the drive cavity 11 of the housing 1 and the output transmission device 4 in the transmission cavity 21 of the output fixing seat 2. The separation of drive and transmission spaces facilitates independent installation and maintenance of each component. It also effectively utilizes axial space, reducing the overall radial dimension of the structure, making it suitable for applications with limited installation space. The dual-stator drive unit 3 employs a dual-stator design, offering higher power density and torque output compared to traditional single-stator motors, providing a more stable and powerful drive source. Its drive end extends to the transmission cavity 21 and connects directly to the output transmission device 4, resulting in a short transmission path, low energy loss, high transmission efficiency, and fast response. The output mounting base 2 not only serves as the load-bearing structure for the transmission cavity 21 but also covers the drive cavity 11, combining sealing and support functions to improve the rigidity and stability of the overall structure. The output connection base 5 serves as the final power output interface, with a reliable structure that facilitates connection to external actuators, enhancing the practicality and adaptability of the mechanism. This embodiment features a reasonable layout, efficient transmission, and robust structure, making it particularly suitable for power transmission scenarios requiring high torque and high precision, and possessing significant engineering application value.

[0021] Multiple heat dissipation slots 12 are provided on the outer periphery of the outer casing 1. These slots 12 are used for heat dissipation of the dual-stator drive device 3 inside the drive cavity 11. In this embodiment, multiple heat dissipation slots 12 are provided on the outer periphery of the outer casing 1. Specifically, the dual-stator drive device 3 generates a large amount of heat during operation, which accumulates in the sealed drive cavity 11. By opening heat dissipation slots 12 on the outer casing 1 of the drive cavity 11, the contact area between the outer casing 1 and the outside air is directly increased, forming an efficient natural convection heat dissipation channel. This allows the heat generated inside the drive cavity 11 to be continuously and quickly dissipated to the external environment, effectively avoiding problems such as magnet demagnetization, insulation aging, and efficiency reduction caused by excessive motor temperature rise.

[0022] One side of the output mounting base 2 is provided with a connecting inner ring 22 and a connecting outer ring 23. The connecting outer ring 23 is fixedly connected to the outer shell 1, and the connecting inner ring 22 is provided with a first bearing 24, which is connected to the dual-stator drive device 3. In this embodiment, the fixed connection between the connecting outer ring 23 and the outer shell 1 achieves a reliable connection and precise positioning between the output mounting base 2 and the outer shell 1, ensuring the coaxiality between the transmission cavity 21 and the drive cavity 11. The connecting inner ring 22 supports key components of the dual-stator drive device 3 (such as the fixed spindle) through the first bearing 24, providing not only a stable center of rotation but also effectively transferring the radial load of the drive device during operation to the robust output mounting base 2, significantly improving the structural rigidity and operational stability of the entire mechanism under stress.

[0023] The dual-stator drive device 3 includes a first stator assembly 31, a second stator assembly 32, a rotor support 33, a rotor assembly 34, and a fixed spindle 35. The first stator assembly 31 is disposed on the inner wall of the drive cavity 11, the fixed spindle 35 is disposed at the axis of the drive cavity 11, the second stator assembly 32 is disposed on the fixed spindle 35, the rotor support 33 is used to fix the rotor assembly 34, and is provided with an output shaft 331, which is connected to the output transmission device 4. The two sides of the rotor assembly 34 are respectively opposite to the first stator assembly 31 and the second stator assembly 32. In this embodiment, the rotor assembly 34 is sandwiched between the two stator assemblies, forming a unique dual-sided electromagnetic drive structure. This allows the rotor assembly 34 to be driven by electromagnetic forces from both the inner and outer sides simultaneously, greatly improving the power density and torque output capability of the motor, achieving efficient and high-torque drive in a limited space, and providing a strong and stable power source for the subsequent transmission device.

[0024] The rotor support 33 includes an upper support 332 and a lower support 333. The rotor assembly 34 is provided with a rotor fixing frame 341 and multiple rotor magnets 342, which are mounted on the rotor fixing frame 341. The upper support 332 and the lower support 333 are used to fix the rotor fixing frame 341 on both sides. In this embodiment, the upper and lower supports 333 clamp and fix the rotor fixing frame 341 from both sides, ensuring the integrity and structural strength of the rotor assembly 34 during high-speed rotation. The symmetrical fixing method effectively prevents the rotor magnets 342 from shifting or loosening due to centrifugal force, ensuring the uniformity and stability of the air gap between the rotor and the stators on both sides, thereby ensuring the reliability of motor operation and the consistency of electromagnetic performance.

[0025] The upper support 332 is equipped with a second bearing, and the lower support 333 is equipped with a third bearing. The upper support 332 is connected to the fixed spindle 35 via the second bearing, and the lower support 333 is connected to the fixed spindle 35 via the third bearing. In this embodiment, the dual-point support structure provides precise radial positioning at both ends of the rotor, evenly distributing the weight and working load of the rotor assembly 34 onto the fixed spindle 35. This greatly improves the rotational accuracy and dynamic stability of the rotor system, effectively suppresses vibrations that may occur during high-speed operation, and extends the service life of the bearings and related components.

[0026] The output transmission device 4 includes a sun gear 41, planetary gears 42, and a gear ring 43. The gear ring 43 is fixedly installed in the transmission cavity 21. The sun gear 41 is connected to the drive end of the dual-stator drive device 3. The planetary gears 42 are mounted on the output connector 5 and mesh with both the sun gear 41 and the gear ring 43. In this embodiment, power is input from the sun gear 41, rotates through the meshing of the planetary gears 42 within the fixed gear ring 43, and is finally output through the planetary carrier (i.e., the output connector 5). This design achieves a large reduction ratio and high torque output while maintaining a very compact structure. It also features smooth transmission, high load-bearing capacity, and high efficiency, perfectly matching the high-power output characteristics of the dual-stator motor and realizing efficient and smooth power transmission.

[0027] An end cap 25 is provided at the end of the output fixing seat 2. The end cap 25 covers the transmission cavity 21 and is equipped with a fourth bearing 251. The end cap 25 is connected to the output connecting seat 5 through the fourth bearing 251. In this embodiment, the end cap 25 not only seals the transmission cavity 21 and prevents foreign objects from entering, but its fourth bearing 251 also provides crucial support for the output connecting seat 5 at the far end. The support and the support points inside the transmission device together constitute the span support of the output shaft 331, which greatly enhances the bending stiffness and torsional stiffness of the output end, ensuring that the output connecting seat 5 can maintain a precise rotation center when subjected to external loads, thereby improving the load capacity and transmission accuracy of the mechanism.

[0028] The output connector 5 is provided with a transmission fixing part 51, and the output transmission device 4 is mounted on the transmission fixing part 51. In this embodiment, the transmission fixing part 51 (such as a planetary carrier) provides a direct and stable mounting base for transmission components such as the planetary gear 42. This ensures a rigid connection between the transmission components and the output end, reduces intermediate links and possible elastic deformation in the power transmission path, and enables the motor's power to be transmitted directly to the output load efficiently and without loss, thereby improving the transmission response speed and overall efficiency.

[0029] The output connector 5 is provided with an output mounting hole 52 and an output positioning shaft 53 for connecting the output load. In this embodiment, the output mounting hole 52 is used to achieve a reliable mechanical connection with the external load through fasteners such as bolts, transmitting torque; the output positioning shaft 53 provides precise radial positioning, ensuring the coaxiality of the load installation and avoiding additional radial force due to installation deviation. This allows the output connection mechanism to quickly and accurately dock with various actuators, offering strong versatility and convenient and reliable installation.

[0030] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A dual-stator motor output connection mechanism, characterized in that: The device includes a housing, an output mounting base, a dual-stator drive unit, an output transmission unit, and an output connector. The housing has a drive cavity, the dual-stator drive unit is disposed within the drive cavity, the output mounting base is disposed on one side of the drive cavity and covers it, the output mounting base has a transmission cavity, the drive end of the dual-stator drive unit extends into the transmission cavity, the output transmission unit is disposed within the transmission cavity and connected to the drive end of the dual-stator drive unit, and the output connector is disposed at one end of the transmission cavity and connected to the output transmission unit. The dual-stator drive unit drives the output transmission unit to rotate the output connector.

2. The dual-stator motor output connection mechanism according to claim 1, characterized in that: The outer periphery of the housing is provided with multiple heat dissipation grooves, which are used to dissipate heat from the dual-stator drive device inside the drive cavity.

3. The dual-stator motor output connection mechanism according to claim 1, characterized in that: One side of the output mounting base is provided with a connecting inner ring and a connecting outer ring. The connecting outer ring is fixedly connected to the housing. The connecting inner ring is provided with a first bearing and is connected to the dual stator drive device through the first bearing.

4. The dual-stator motor output connection mechanism according to claim 1, characterized in that: The dual-stator drive device includes a first stator assembly, a second stator assembly, a rotor support, a rotor assembly, and a fixed main shaft. The first stator assembly is disposed on the inner wall of the drive cavity, the fixed main shaft is disposed at the axis of the drive cavity, the second stator assembly is disposed on the fixed main shaft, the rotor support is used to fix the rotor assembly and is provided with an output shaft, the output shaft is connected to an output transmission device, and the two sides of the rotor assembly are respectively opposite to the first stator assembly and the second stator assembly.

5. The dual-stator motor output connection mechanism according to claim 4, characterized in that: The rotor support includes an upper support and a lower support. The rotor assembly is provided with a rotor fixing frame and multiple rotor magnets. The rotor magnets are disposed on the rotor fixing frame. The upper support and the lower support are respectively used to fix the two sides of the rotor fixing frame.

6. The dual-stator motor output connection mechanism according to claim 5, characterized in that: The upper support is provided with a second bearing, and the lower support is provided with a third bearing. The upper support is connected to the fixed spindle through the second bearing, and the lower support is connected to the fixed spindle through the third bearing.

7. The dual-stator motor output connection mechanism according to claim 1, characterized in that: The output transmission device includes a sun gear, planetary gears, and a ring gear. The ring gear is fixedly installed in the transmission cavity. The sun gear is connected to the drive end of the dual stator drive device. The planetary gears are installed on the output connector and mesh with the sun gear and the ring gear respectively.

8. The dual-stator motor output connection mechanism according to claim 1, characterized in that: The output mounting base is provided with an end cap at its end, which is used to cover the transmission cavity. The end cap is provided with a fourth bearing, and the end cap is connected to the output mounting base through the fourth bearing.

9. The dual-stator motor output connection mechanism according to claim 1, characterized in that: The output connector is provided with a transmission fixing part, and the output transmission device is mounted on the transmission fixing part.

10. The dual-stator motor output connection mechanism according to claim 1, characterized in that: The output connector is provided with an output mounting hole and an output positioning shaft for connecting the output load.

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