Multi-directional output multifunctional motor

The magnetic coupling between the permanent magnet and stator assembly of the multifunctional motor and the ball structure of the reset part solves the problem that traditional motors can only have a single output mode, and realizes the multi-directional output switching and stability improvement of the motor.

CN120613880BActive Publication Date: 2025-10-17ZHEJIANG BAOLONG M&E CO LTD
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Patent Information

Application Number
CN202511120323.9
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2025-08-12
Publication Date
2025-10-17
Estimated Expiration
2045-08-12

AI Technical Summary

Technical Problem

Traditional motors can only meet one of the output modes, axial or radial, resulting in a cumbersome and complex structure, poor heat dissipation, high noise, low reliability, and difficulty in flexibly switching the output mode in specific fields.

Method used

A multifunctional motor with multi-directional output is designed. The axial and radial power output switching is achieved through the magnetic coupling of the permanent magnets on the first and second connecting seats and the stator assembly, and the stability and heat dissipation of the motor are optimized through the reset member and ball structure.

Benefits of technology

It realizes multi-directional output switching of the motor, improves the structural compactness and reliability, reduces friction and noise, enhances heat dissipation capacity and prolongs service life.

✦ Generated by Eureka AI based on patent content.

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Abstract

The application relates to the motor technical field and discloses a multi-direction output multifunctional motor, which comprises a shell, an output shaft is arranged in the shell, the front end of the output shaft is exposed outside the shell, a first connecting seat and a second connecting seat are arranged on the output shaft, the first connecting seat is arranged closer to the front end of the output shaft than the second connecting seat, first permanent magnets are arranged at the two ends of the first connecting seat, a plurality of second permanent magnets are arranged on the second connecting seat in the circumferential direction, a first stator assembly for driving the first connecting seat to reciprocate along the axial direction is arranged at the position of the first permanent magnet in the shell, a second stator assembly for driving the second connecting seat to reciprocate along the circumferential direction is arranged at the position of the second permanent magnet in the shell, and a reset piece for resetting the output shaft is arranged on the driving shaft. The motor has the advantages of simple structure, compact layout, multi-direction output and good use effect.
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Description

TECHNICAL FIELD

[0001] The present application relates to a multi-directional output multifunctional motor. BACKGROUND

[0002] As a core electromagnetic device for realizing the conversion or transmission of electric energy and mechanical energy according to the law of electromagnetic induction, the motor, commonly known as the "motor", occupies an irreplaceable position in modern industry and daily life. The basic structure of the motor mainly consists of a stator, a rotor, a machine base and accessories. Among them, the stator, as the key part of the motor such as generator and motor, is composed of stator core and stator winding. The stator core is usually made of high permeability steel sheets stacked together, which aims to reduce hysteresis and eddy current loss and improve the efficiency of the motor; the stator winding is wound by insulated wires, which will generate a rotating magnetic field when current is passed through, or generate an induced current in the winding under the action of the rotating magnetic field generated by the rotor. The rotor is composed of rotor core, motor shaft, bearing and other components, the motor shaft is used to transmit torque, and the bearing ensures the flexible rotation of the rotor. The rotor generates driving torque in the rotating magnetic field of the stator during the operation of the motor, or generates a rotating magnetic field by itself to realize the efficient conversion between electric energy and mechanical energy.

[0003] In actual application scenarios, the traditional motor can usually only satisfy one of the axial output or the radial output. However, in some specific fields, it is often necessary to flexibly switch between axial or radial output to meet diversified use requirements. In the past, in order to achieve this function, two motors with different output modes are often assembled, which not only makes the overall structure bulky and large, increases the volume and weight of the equipment, but also is not conducive to optimizing the structural layout and improving the integration and reliability of the equipment. In order to solve this problem, the axial and radial multi-directional output motor emerges as the times require. However, there are still many problems to be solved in this kind of multi-directional motor. The structure design is relatively complicated, a large number of complex parts cooperate with each other, which not only increases the manufacturing difficulty and cost, but also is easy to cause assembly error; the bulky structure layout leads to compact internal space, blocked heat dissipation channel, poor heat dissipation capacity, and long-time operation is easy to cause motor overheating, affecting performance and service life; although this kind of multi-directional output motor meets certain use scenarios, in the case of single requirement, the redundant structure makes the structure prone to structural error in the long-term vibration environment, and the noise increases, affecting the use reliability of the structure. SUMMARY

[0004] In view of the deficiencies of the prior art, the present application provides a multi-directional output multifunctional motor, which has simple structure, compact layout, can realize multi-directional output, and has good use effect.

[0005] In order to achieve the above object, the application provides a multi-direction output multifunctional motor, which comprises a shell, an output shaft is arranged in the shell, the front end of the output shaft is exposed outside the shell, a first connecting seat and a second connecting seat are arranged on the output shaft, the first connecting seat is arranged closer to the front end of the output shaft than the second connecting seat, first permanent magnets are arranged at the two ends of the first connecting seat respectively, a plurality of second permanent magnets are arranged on the second connecting seat in the circumferential direction, a first stator assembly for driving the first connecting seat to reciprocate along the axial direction is arranged at the position of the first permanent magnet in the shell, a second stator assembly for driving the second connecting seat to reciprocate along the circumferential direction is arranged at the position of the second permanent magnet in the shell, and a reset member for resetting the output shaft is arranged on the output shaft.

[0006] The beneficial effects of such an arrangement are as follows: the first permanent magnets at the two ends of the first connecting seat work cooperatively with the first stator assembly, the first stator assembly generates a magnetic field after being electrified, and the first permanent magnets are attracted or repelled by each other, thereby pushing the first connecting seat to reciprocate along the axial direction of the output shaft, and axial power output is realized. The plurality of second permanent magnets arranged on the second connecting seat in the circumferential direction form a magnetic coupling relationship with the second stator assembly. When the second stator assembly is electrified, a changing magnetic field is generated, which interacts with the second permanent magnets to drive the second connecting seat to drive the output shaft to reciprocate in the circumferential direction, thereby outputting radial power. The arrangement of the reset member provides reliable protection for the operation of the motor. The reset member can be arranged in various ways, for example, one reset member is arranged between the first connecting seat and the front end face of the shell, and another reset member is arranged between the second connecting seat and the flange formed at the middle position of the shell, or a closed cavity is formed on the shell, the output shaft passes through the closed cavity, and a contact flange is arranged on the position of the output shaft in the closed cavity, the two sides of the contact flange are in contact with the front and rear end faces of the closed cavity, respectively, and a spring is arranged to realize the function of the reset member. There are various reset forms, and this will not be described in detail here. When the first stator assembly or the second stator assembly stops working, the reset member quickly plays a role to reset the output shaft to the initial position, thereby avoiding the misplacement of parts or the deviation of power output caused by inertia. The motor can accurately control the on-off time sequence and current size of the first stator assembly and the second stator assembly through the integrated circuit board, thereby flexibly realizing the switching of axial or radial power output. This intelligent control method not only is convenient to operate, but also greatly improves the applicability of the motor. The circuit control belongs to the prior art, and will not be described in detail here.

[0007] As a further arrangement of the present application, the output shaft is divided into a first shaft body and a second shaft body, the first shaft body is rotatably connected with the housing, the front end of the first shaft body is exposed outside the housing, the rear end of the first shaft body is provided with a square hole, the second shaft body is rotatably connected with the housing, the second shaft body is hollow and provided with a matching hole, a connecting shaft is slidably connected in the matching hole, the front end of the connecting shaft is provided with a square shaft, the rear end of the connecting shaft is exposed outside the housing, and the square shaft and the square hole are inserted and connected to form a fixed connection between the first shaft body and the second shaft body.

[0008] In this way, by dividing the output shaft, in some cases, only axial output is required, the square shaft is separated from the square hole by operating the connecting shaft to realize the division of the connecting shaft, and the radial output mechanism at the rear end can adjust the output frequency of the second stator assembly. When the first shaft body reciprocates, the periodic counterforce is transmitted to the motor housing and synchronously transmitted to the corresponding position of the second shaft body, the housing will produce a periodic micro displacement, and through the coupling effect of magnetic force, when the natural frequency of the vibration system composed of the second connecting seat and the second assembly is consistent with the transmitted frequency, the reverse resonance is generated. The counterforce generated by the resonance is transmitted to the housing to realize mutual offset, thereby reducing the periodic vibration force received by the housing and effectively reducing the shock absorption effect. The structure is more functional, the use effect is more reliable, and good use effect is achieved.

[0009] As a further arrangement of the present application, the first shaft body and the second shaft body are respectively provided with a matching sleeve, the first shaft body and the second shaft body are rotatably connected with the housing through the matching sleeve, and the matching sleeve is provided with a plurality of balls arranged in the circumferential direction.

[0010] The beneficial effects of this arrangement are that the matching sleeve is tightly sleeved on the output shaft, serving as a transition structure between the two, and optimizing the contact state of the output shaft and the housing. The balls arranged in the circumferential direction of the matching sleeve convert the traditional sliding friction into rolling friction, greatly reducing the friction when the output shaft rotates, reducing the wear of the parts, and making the output shaft run more smoothly. At the same time, the uniform distribution of the support force of the balls can effectively offset the radial deviation and vibration generated by the output shaft during high-speed operation, so that the output shaft always maintains a precise motion track, ensuring the stability and reliability of the motor power output, and laying a solid foundation for long-term and efficient operation of the motor.

[0011] As a further arrangement of the present application, the first shaft body is sleeved with a first return spring, the first return spring is in abutment between the first connecting seat and the shell, the second shaft body rear end is sleeved with a second return spring, the second return spring is in abutment between the second connecting seat and the shell rear end, the second return spring is sleeved on the second shaft body, the first connecting seat and the second connecting seat are further in abutment with a third return spring, the third return spring has the same elastic coefficient as the first return spring, and the second return spring has a larger elastic coefficient than the third return spring.

[0012] The beneficial effects of such an arrangement are that: the overall structure is arranged in this way, and through such an arrangement, the structure can ensure resetting after axial movement, ensuring the stability of the position of the output shaft position, and at the same time, since the third return spring has the same elastic coefficient as the first return spring, and the second return spring has a larger elastic coefficient than the third return spring, the second shaft body position can be in a relatively stable state and is not easy to deviate, ensuring the stability of the reciprocating rotation output of the second shaft body, and at the same time, the overall structure is simple and convenient to arrange, and has good use effect, and as a preferred, the third return spring is sleeved on the end of the first shaft body and the front end of the second shaft body, which can effectively ensure the stability of the position of the third spring and the use reliability of the structure.

[0013] As a further arrangement of the present application, the square hole is arranged in a flared mouth, the first shaft body front end is provided with an identifier for identifying the orientation of the square hole, and the connecting shaft rear end is provided with a handle.

[0014] The beneficial effects of such an arrangement are that: the flared mouth arrangement facilitates the stable guiding insertion of the connecting shaft under the insertion action, ensuring the stability of the insertion, and at the same time, through the arrangement of the identifier, the position of the square hole can be determined by the identifier, and the connecting shaft can be aligned and operated to realize the insertion of the square shaft and the square hole, ensuring the accuracy of the connection and improving the use effect of the structure.

[0015] As a further arrangement of the present application, the first stator assembly includes two groups of mounting racks and a first coil, the two groups of mounting racks are arranged side by side, the two groups of mounting racks are respectively provided with a first coil, the mounting rack four corners are obliquely arranged to form a clamping chamfer, the shell is correspondingly provided with an inclined wall at the clamping chamfer position, and the clamping chamfer and the inclined wall are clamped.

[0016] The beneficial effect of this arrangement is that, with this arrangement, the two sets of mounting brackets arranged side by side, and the first coils installed thereon are in opposite directions, constitute the core structure for driving the output shaft to move axially back and forth. When the circuit is switched, the two sets of first coils in opposite directions are alternately energized, generating magnetic fields in opposite directions, which interact with the first permanent magnets at both ends of the first connecting seat, thereby driving the output shaft to move back and forth. The clipping chamfers arranged at an angle on the four corners of the mounting bracket perfectly match the corresponding inclined walls on the shell, forming a unique clipping structure. This design not only makes the installation process of the mounting bracket extremely simple, as positioning and fixing can be quickly completed by simply aligning the clipping chamfers with the inclined walls and gently pushing them in, greatly improving assembly efficiency. Moreover, during the operation of the motor, the clipping structure can effectively resist external interference such as vibration and impact, ensuring a stable connection between the mounting bracket and the shell, preventing the first stator assembly from loosening and shifting, and ensuring the stability and reliability of the motor operation.

[0017] As a further configuration of the present invention, the second stator assembly includes a stator base, a second coil and a positioning frame, an upper baffle and a lower baffle are respectively provided on both sides of the stator base, a winding groove is formed between the upper baffle and the lower baffle, the positioning frame is clamped with the stator base, and extension plates are respectively provided on the stator base corresponding to the upper baffle and the lower baffle position, and the second coil is wound between the winding groove and the extension plate.

[0018] The beneficial effect of this arrangement is as follows: with this arrangement, the upper baffles and lower ribs on both sides of the stator seat form a winding groove, which provides a fixed space for the installation of the first coil. In conjunction with the clamping design of the positioning frame and the stator seat, the second coil is limited from multiple directions to prevent it from displacement during the operation of the motor, ensuring the stability of the electromagnetism process, and allowing the magnetic field to accurately drive the second connecting seat. The extension plate on the stator seat forms a fully enclosed structure with the upper baffle and the lower rib, tightly wrapping the second coil. This design allows the shell to be hollowed out to increase heat dissipation while effectively blocking the entry of external pollutants such as dust and debris, avoiding wear caused by friction with the coil, and reducing failures caused by component loss, thereby significantly extending the service life of the motor and improving the reliability and stability of the overall performance of the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Fig. 1 Schematic diagram of the cross-sectional structure of an embodiment of the present invention;

[0020] Fig. 2 Schematic diagram of the internal structure of an embodiment of the present invention;

[0021] Fig. 3 Schematic diagram of the structure of the output shaft in an embodiment of the present invention;

[0022] Fig. 4 Schematic diagram of the structure of the second stator assembly in an embodiment of the present invention. DETAILED DESCRIPTION

[0023] The implementation of the multi-directional output multifunctional motor of the present application is as follows Figs. 1 to 4 The implementation of the multi-directional output multifunctional motor of the present application is as follows

[0024] As a further arrangement of the present embodiment, the output shaft 2 is formed by two separate shaft bodies, a first shaft body 21 and a second shaft body 22. The first shaft body 21 is rotatably connected to the housing 1 and has an exposed front end and a square hole at the rear end. The second shaft body 22 is also rotatably connected to the housing 1 and has a hollow structure with a matching hole. A connecting shaft 23 is slidably fitted into the matching hole of the second shaft body 22 and has a square shaft at the front end and an exposed rear end. The square shaft and the square hole are inserted and fitted to form a fixed connection between the first shaft body 21 and the second shaft body 22. In this way, by separating the output shaft 2, in some cases, only axial output is needed. By operating the connecting shaft 23 to disengage the square shaft from the square hole, the connecting shaft 23 is separated. The radial output mechanism at the rear end can adjust the output frequency of the second stator assembly. When the first shaft body 21 moves reciprocally, the periodic counterforce is transmitted to the motor housing and synchronously to the corresponding position of the second shaft body 22. The housing 1 will produce a periodic micro-displacement. Through the coupling effect of magnetic force, when the natural frequency of the vibration system composed of the second connecting seat 4 and the second assembly is consistent with the transmitted frequency, reverse resonance occurs, and the reaction force generated by resonance is transmitted to the housing 1, achieving mutual cancellation and reducing the periodic vibration force on the housing 1, thereby effectively reducing the shock and vibration effect. This makes the structure more functional and reliable in use, with good use effect.

[0025] As a further arrangement of the present embodiment, the first shaft body 21 and the second shaft body 22 are respectively provided with a matching sleeve 7. The first shaft body 21 and the second shaft body 22 are rotatably connected to the housing 1 through the matching sleeve 7. The matching sleeve 7 is tightly fitted on the output shaft 2 and serves as a transition structure between the two, optimizing the contact state of the output shaft 2 and the housing 1. The arrangement of the balls along the circumference of the matching sleeve 7 converts traditional sliding friction into rolling friction, greatly reducing the friction when the output shaft 2 rotates, reducing component wear, and making the output shaft 2 run more smoothly. At the same time, the uniform distribution of the support force of the balls can effectively offset the radial deviation and vibration generated by the output shaft 2 during high-speed operation, keeping the output shaft 2 always on the precise motion track and ensuring the stability and reliability of the motor power output, laying a solid foundation for long-term and efficient operation of the motor.

[0026] As a further arrangement of the present embodiment, the first shaft body 21 is sleeved with a first reset spring 81, the first reset spring 81 abuts between the first connecting seat 3 and the shell 1, the rear end of the second shaft body 22 is sleeved with a second reset spring 82, the second reset spring 82 abuts between the second connecting seat 4 and the rear end of the shell 1, the second reset spring is sleeved on the second shaft body 22, the first connecting seat 3 and the second connecting seat 4 also abut with a third reset spring 83, the third reset spring 83 has the same elastic coefficient as the first reset spring 81, and the second reset spring 82 has a greater elastic coefficient than the third reset spring 83. The beneficial effects of such an arrangement are that: the overall structure is arranged in this way, and through such a configuration, the structure can ensure reset after axial movement, ensuring the stability of the position of the output shaft 2, and because the third reset spring 83 has the same elastic coefficient as the first reset spring 81, and the second reset spring 82 has a greater elastic coefficient than the third reset spring 83, the position of the second shaft body 22 can be relatively stable and not easily deviated, ensuring the stability of the reciprocating rotation output of the second shaft body 22, and the overall structure is simple and convenient to arrange, with good use effect, and as a preferred arrangement, the third reset spring 83 is sleeved on the end of the first shaft body 21 and the front end of the second shaft body 22, which can effectively ensure the stability of the position of the third spring and the use reliability of the structure.

[0027] As a further arrangement of the present embodiment, the square hole is arranged as a flared mouth, the front end of the first shaft body 21 is provided with an identifier for identifying the direction of the square hole, and the rear end of the connecting shaft 23 is provided with a handle. The beneficial effects of such an arrangement are that: the flared mouth arrangement facilitates the stable guiding and insertion of the connecting shaft 23 under the insertion action, ensuring the stability of the insertion, and through the arrangement of the identifier, the position of the square hole can be determined by the identifier, and the connecting shaft 23 can be aligned and operated to realize the insertion of the square shaft and the square hole, ensuring the accuracy of the connection and improving the use effect of the structure.

[0028] As a further arrangement of the present embodiment, the first stator assembly comprises two groups of mounting racks 5 and first coils 51, the two groups of mounting racks 5 are arranged side by side, and the first coils 51 are arranged on the two groups of mounting racks 5 respectively, the mounting rack 5 is provided with a clamping chamfer at the four corners of the edge, the shell 1 is provided with an inclined wall corresponding to the clamping chamfer position, and the clamping chamfer and the inclined wall are clamped. The beneficial effect of such arrangement is that: in this way, the two groups of mounting racks 5 arranged side by side, the first coils 51 installed thereon are in opposite directions, which constitutes the core structure of the axial reciprocating movement of the output shaft 2. When the circuit is switched, the two groups of first coils 51 with opposite directions are alternately energized, generating magnetic fields with opposite directions, which interact with the first permanent magnets 31 at both ends of the first connecting seat 3, and then drive the output shaft 2 to reciprocate forward and backward; the clamping chamfer of the mounting rack 5 arranged at the four corners of the edge is perfectly matched with the corresponding inclined wall on the shell 1, forming a unique clamping structure. This design not only makes the installation process of the mounting rack 5 extremely simple, it only needs to align the clamping chamfer with the inclined wall and gently push it in, so that the positioning and fixing can be quickly completed, greatly improving the assembly efficiency; moreover, during the operation of the motor, the clamping structure can effectively resist external disturbances such as vibration and impact, ensuring the stable connection between the mounting rack 5 and the shell 1, preventing the first stator assembly from loosening and shifting, and ensuring the stability and reliability of the motor operation.

[0029] As a further arrangement of the present embodiment, the second stator assembly comprises a stator seat 6, a second coil 62 and a positioning rack 61, the stator seat 6 is provided with an upper baffle and a lower baffle on both sides, respectively, and a wrapping groove is formed between the upper baffle and the lower baffle, the positioning rack 61 is clamped with the stator seat 6, the stator seat 6 is provided with an extension plate corresponding to the positions of the upper baffle and the lower baffle, respectively, and the second coil 62 is wrapped between the wrapping groove and the extension plate. The beneficial effect of such arrangement is that: in this way, the upper baffle and the lower baffle on both sides of the stator seat 6 build a wrapping groove, providing a fixed space for the installation of the first coil 51, cooperating with the clamping design of the positioning rack 61 and the stator seat 6 to limit the second coil 62 from multiple directions, preventing it from shifting during the operation of the motor, ensuring the stability of the electric-magnetic process, and enabling the magnetic field to accurately drive the second connecting seat 4. The extension plate on the stator seat 6 forms a full-enclosing structure with the upper baffle and the lower baffle, tightly wrapping the second coil 62. This design allows the shell 1 to increase the hollow to increase the heat dissipation, while effectively blocking dust, debris and other external pollutants from entering, avoiding friction and wear caused by the friction between the coil and the coil, reducing failures caused by component wear, thereby significantly prolonging the service life of the motor and improving the reliability and stability of the overall performance of the motor.

[0030] The above examples are only one of the preferred specific examples of the present application, and the usual changes and substitutions made by those skilled in the art within the scope of the technical solutions of the present application are all included in the protection scope of the present application.

Claims

1. A multifunctional motor with multi-directional output, comprising a housing, an output shaft passing through the housing, and a front end of the output shaft exposed outside the housing, characterized in that: The output shaft is provided with a first connecting seat and a second connecting seat, the first connecting seat is arranged closer to the front end of the output shaft than the second connecting seat, and first permanent magnets are respectively provided at both ends of the first connecting seat, and a plurality of second permanent magnets are arranged circumferentially on the second connecting seat, a first stator assembly for driving the first connecting seat to reciprocate axially is provided in the shell at the position of the first permanent magnet, and a second stator assembly for driving the second connecting seat to reciprocate circumferentially is provided in the shell at the position of the second permanent magnet, a reset member for resetting the output shaft is provided on the output shaft, and the output shaft is separately provided to form a first shaft body and a second shaft body, the first shaft body and the shell are rotatably matched, the front end of the first shaft body is exposed outside the shell, the rear end of the first shaft body is provided with a square hole, the second shaft body is rotatably connected to the shell, the second shaft body is hollow and formed with a matching hole, a connecting shaft is slidably matched in the matching hole, the front end of the connecting shaft is provided with a square shaft, the rear end of the connecting shaft is exposed outside the shell, and the square shaft is plug-fitted with the square hole to form a fixed connection between the first shaft body and the second shaft body.

2. The multifunctional motor with multi-directional output according to claim 1, characterized in that: The first shaft body and the second shaft body are respectively sleeved with matching sleeves, and the first shaft body and the second shaft body are respectively rotatably connected to the housing through the matching sleeves. A plurality of balls are arranged on the matching sleeves along the circumference.

3. The multifunctional motor with multi-directional output according to claim 1, characterized in that: The square hole is arranged in a trumpet-shaped manner, the front end of the first shaft body is provided with a mark for marking the direction of the square hole, and the rear end of the connecting shaft is provided with a handle.

4. The multifunctional motor with multi-directional output according to claim 1, characterized in that: The first stator assembly includes two groups of mounting frames and a first coil. The two groups of mounting frames are arranged side by side. The first coil is respectively arranged on the two groups of mounting frames. The four corner edges of the mounting frames are inclined to form a snap-in chamfer. The shell is formed with an inclined wall corresponding to the snap-in chamfer position, and the snap-in chamfer is snap-connected with the inclined wall.

5. The multifunctional motor with multi-directional output according to claim 2, characterized in that: A first return spring is sleeved on the first shaft body, and the first return spring is in contact between the first connecting seat and the shell. A second return spring is sleeved on the rear end of the second shaft body, and the second return spring is in contact between the second connecting seat and the rear end of the shell. The second return spring is sleeved on the second shaft body, and a third return spring is also in contact between the first connecting seat and the second connecting seat. The third return spring has the same elastic coefficient as the first return spring, and the elastic coefficient of the second return spring is greater than that of the third return spring.

6. The multifunctional motor with multi-directional output according to claim 2, characterized in that: The second stator assembly includes a stator base, a second coil and a positioning frame. An upper baffle and a lower baffle are respectively provided on both sides of the stator base. A winding groove is formed between the upper baffle and the lower baffle. The positioning frame is clamped with the stator base. Extension plates are respectively provided on the stator base corresponding to the upper baffle and the lower baffle. The second coil is wound between the winding groove and the extension plate.

Citation Information

Patent Citations

  • Dual-drive motor device

    CN221354126U