Built-in control mechanism of direct-drive motor and motor
By designing the built-in control mechanism of the direct drive motor and integrating the induction module and the control module, the problems of inaccurate control structure and insufficient stability in the existing technology are solved, precise induction and efficient control of the motor are achieved, and the integration and operating efficiency of the system are improved.
Patent Information
- Application Number
- CN202422166463.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-04
- Publication Date
- 2025-07-08
- Estimated Expiration
- 2034-09-04
AI Technical Summary
The existing direct drive motor control structure is generally external, which cannot achieve accurate induction and efficient control, and there are problems of insufficient stability and integration during the motor operation.
A built-in control mechanism of direct drive motor is designed, including a base, a rotor shaft assembly, a stator assembly, a rotor housing, a rotor assembly, a first induction module and a control module. By integrating the induction module and a control module, precise induction and efficient control are achieved, and the stability and integration of the system are improved through structures such as transparent end caps and end cap bearings.
It realizes accurate induction and control of the rotor position and motion state, improves the operating efficiency and performance of the motor, enhances the integration and stability of the system, and ensures the reliability of data transmission and the timeliness of control instructions.
Smart Images
Figure CN223079903U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of drive motors, in particular to a direct drive motor with an internal control mechanism and a motor. Background Art
[0002] With the development of motor technology, higher requirements are imposed on the output capacity of motors, demanding higher torque output capacity at low speeds, small torque ripple, and high control precision. The direct drive motor introduces a modulation pole structure on the stator teeth of the traditional permanent magnet motor, and utilizes a special vernier effect to modulate the magnetic field of the stator armature winding with a low pole pair and high speed, so as to obtain a harmonic magnetic field component that can match and act with the magnetic field of the permanent magnet with a high pole pair and low speed. This method can achieve the purpose of high torque at low speeds without increasing the volume and number of slots of the motor. However, the existing control structures of direct drive motors are generally external, and accurate induction and control cannot be achieved during the operation of the motor. Therefore, new design improvements need to be made to the existing motor control structure and induction structure. Summary of the Utility Model
[0003] To solve the above problems, the utility model provides a direct drive motor with an internal control mechanism and a motor through accurate induction and control, integrated design, reliable data transmission, efficient control algorithms, and stable and reliable components.
[0004] The technical solution adopted by the utility model is as follows: A direct drive motor internal control mechanism includes a base, a rotating shaft assembly, a stator assembly, a rotor housing, a rotor assembly, a first induction module, a second induction module, and a control module. The base is provided with an inner cavity, an outer cavity, and an end cavity. The outer cavity is arranged at one end of the base, and the end cavity is arranged on the end face of the base and communicates with the inner cavity. The rotating shaft assembly is arranged in the inner cavity and is connected to the rotor housing at one end. The stator assembly is arranged on the outer side of the base. The rotor assembly is arranged on the inner circumferential surface of the rotor housing and is opposite to the stator assembly. The control module is provided with a first circuit board, and a control chip is arranged on the first circuit board. The first induction module includes a reading chip arranged on the first circuit board and a grating disk arranged on the rotor housing and opposite to the reading chip. The second induction module includes a second circuit board, a magnetic field sensor, and a magnetic element. The magnetic element is arranged on the rotating shaft assembly. The second circuit board is arranged in the end cavity, and the magnetic field sensor is arranged on the second circuit board and opposite to the magnetic element. The first circuit board is electrically connected to the second circuit board.
[0005] For further improvement of the above solution, a end cover fixing step is arranged at the opening of the end cavity of the base, and a packaging end cover is installed on the end cover fixing step. The packaging end cover is a transparent end cover.
[0006] A further improvement to the above solution is that an end - cover bearing is provided on the outer side of the base, a side end - cover is provided at one end of the rotor housing, the side end - cover is provided with a rotating connection ring, and the rotating connection ring is rotatably connected to the end - cover bearing.
[0007] A further improvement to the above solution is that the rotating shaft assembly includes a rotating shaft, a rotating bearing, and a connecting member. One end of the rotating shaft is connected to the rotor housing, and the other end is connected to the connecting member. The magnetic element is provided on the connecting member, and the rotating bearing is used to rotatably connect the rotating shaft to the inner cavity.
[0008] A further improvement to the above solution is that an interference - fit tooth is provided at the end of the rotating shaft connected to the rotor housing. The rotor housing is provided with a reinforcing platform, and a mating hole is provided on the reinforcing platform. The interference - fit tooth is used to be assembled on the mating hole; the grating disk is provided on the rotor housing and is located on the outer periphery of the reinforcing platform.
[0009] A further improvement to the above solution is that a fixed bracket is provided on the inner periphery of the rotor housing, and the rotor assembly includes a plurality of rotor magnetic tiles, and the plurality of rotor magnetic tiles are provided on the fixed bracket.
[0010] A further improvement to the above solution is that the fixed bracket is provided with a plurality of fixed slots, and a boss is provided at intervals between the plurality of fixed slots. The rotor magnetic tile includes a first magnetic tile and a second magnetic tile. The first magnetic tile is provided in the fixed slot, and the second magnetic tile is provided on the boss.
[0011] A further improvement to the above solution is that the first circuit board is provided with a connecting wire, the base is provided with a through - hole, one end of the through - hole communicates with the outer cavity, and one end of the connecting wire passes through the through - hole.
[0012] A further improvement to the above solution is that one side of the reading chip faces the grating disk and is used to read the grating disk; the magnetic field sensor is a Hall sensor and is used to sense the position of the magnetic element.
[0013] A motor includes the built - in control mechanism of the direct - drive motor described above.
[0014] The beneficial effects of the present utility model are:
[0015] Compared with the existing direct drive motor control structure, the utility model can accurately sense parameters such as the rotor position and speed through the settings of the first induction module and the second induction module. The grating disk and the reading chip in the first induction module can achieve high-precision position detection, while the magnetic field sensor and the magnetic element in the second induction module can realize real-time monitoring of the rotor motion state, thereby achieving precise control of the motor. By setting an inner cavity, an outer cavity and an end cavity in the base, and integrating the rotating shaft assembly, the stator assembly, the rotor housing, the first induction module, the second induction module and the control module, a compact integrated design of the motor control mechanism is realized, which helps to improve the integration and stability of the motor system. Through the electrical connection between the first circuit board and the second circuit board, reliable data transmission and communication between the control module and the induction module can be achieved, ensuring the accuracy of the induction data and the timeliness of the control instructions. The control chip set on the control module can quickly process and respond to the induction data. Combining with advanced control algorithms, efficient control and adjustment of the motor can be realized, improving the operation efficiency and performance of the motor. Through technical effects such as precise induction and control, integrated design, reliable data transmission, efficient control algorithms and stable and reliable operation, the utility model provides a built-in control mechanism for the motor. Description of the Drawings
[0016] Figure 1 is a three-dimensional schematic diagram of the built-in control mechanism of the direct drive motor of the utility model;
[0017] Figure 2 is Figure 1 the front view schematic diagram of the built-in control mechanism of the direct drive motor in
[0018] Figure 3 is Figure 2 the sectional view taken along A-A in
[0019] Figure 4 is Figure 3 the enlarged schematic diagram at A in
[0020] Figure 5 is Figure 1 the partial structure schematic diagram of the built-in control mechanism of the direct drive motor in
[0021] Figure 6 is Figure 1 the partial structure schematic diagram of the built-in control mechanism of the direct drive motor in
[0022] Description of reference numerals: base 1, inner cavity body 11, outer cavity body 12, end cavity body 13, end cover fixing step 14, encapsulation end cover 15, end cover bearing 16, perforation 17, rotating shaft assembly 2, rotating shaft 21, interference fit teeth 211, rotating bearing 22, connecting member 23, stator assembly 3, rotor housing 4, side end cover 41, rotating connection ring 42, reinforcement platform 43, fixing bracket 44, fixing slot 441, convex platform 442, rotor assembly 5, rotor magnetic tile 51, first magnetic tile 511, second magnetic tile 512, first induction module 6, reading chip 61, grating disk 62, second induction module 7, second circuit board 71, magnetic field sensor 72, magnetic element 73, control module 8, first circuit board 81, control chip 82. Detailed implementation manners
[0023] To facilitate the understanding of the present utility model, the present utility model will be described more comprehensively below with reference to the relevant drawings. The preferred embodiments of the present utility model are shown in the drawings. However, the present utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present utility model more thorough and comprehensive.
[0024] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time.
[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present utility model belongs. The terms used in the specification of the present utility model herein are only for the purpose of describing specific embodiments and are not intended to limit the present utility model. As Figures 1 to 6As shown in the figure, in an embodiment of the present utility model, a direct-drive motor built-in control mechanism is involved, including a base 1, a rotating shaft assembly 2, a stator assembly 3, a rotor housing 4, a rotor assembly 5, a first induction module 6, a second induction module 7, and a control module 8. The base 1 is provided with an inner cavity 11, an outer cavity 12, and an end cavity 13. The outer cavity 12 is arranged at one end of the base 1, and the end cavity 13 is arranged on the end face of the base 1 and communicates with the inner cavity 11. The rotating shaft assembly 2 is arranged in the inner cavity 11 and one end is connected to the rotor housing 4. The stator assembly 3 is arranged on the outside of the base 1. The rotor assembly 5 is arranged on the inner peripheral surface of the rotor housing 4 and is opposite to the stator assembly 3. The control module 8 is provided with a first circuit board 81, and a control chip 82 is arranged on the first circuit board 81. The first induction module 6 includes a reading chip 61 arranged on the first circuit board 81 and a grating disk 62 arranged on the rotor housing 4 and opposite to the reading chip 61. The second induction module 7 includes a second circuit board 71, a magnetic field sensor 72, and a magnetic element 73. The magnetic element 73 is arranged on the rotating shaft assembly 2. The second circuit board 71 is arranged in the end cavity 13, and the magnetic field sensor 72 is arranged on the second circuit board 71 and opposite to the magnetic element 73. The first circuit board 81 is electrically connected to the second circuit board 71. Through the settings of the first induction module 6 and the second induction module 7 in this embodiment, accurate induction of parameters such as the rotor position and speed can be achieved. The grating disk 62 and the reading chip 61 in the first induction module 6 can achieve high-precision position detection, while the magnetic field sensor 72 and the magnetic element 73 in the second induction module 7 can achieve real-time monitoring of the rotor motion state, thereby realizing precise control of the motor. By arranging the inner cavity 11, the outer cavity 12, and the end cavity 13 in the base 1, and integrating the rotating shaft assembly 2, the stator assembly 3, the rotor housing 4, the first induction module 6, the second induction module 7, and the control module 8 with each other, a compact integrated design of the motor control mechanism is achieved, which helps to improve the integration and stability of the motor system. Through the electrical connection between the first circuit board 81 and the second circuit board 71, reliable data transmission and communication between the control module 8 and the induction module can be realized, ensuring the accuracy of the induction data and the timeliness of the control instructions. The control chip 82 arranged on the control module 8 can achieve rapid processing and response to the induction data. Combining with advanced control algorithms, efficient control and regulation of the motor can be realized, improving the operation efficiency and performance of the motor. The present utility model provides a built-in control mechanism for the motor through technical effects such as precise induction and control, integrated design, reliable data transmission, efficient control algorithms, and stable and reliable operation.
[0026] The base 1 is provided with an end - cover fixing step 14 at the opening of the end cavity 13. An encapsulation end - cover 15 is installed on the end - cover fixing step 14, and the encapsulation end - cover 15 is a transparent end - cover. In this embodiment, through the arrangement of the end - cover fixing step 14 and the transparent encapsulation end - cover 15, effective sealing and protection of the internal induction structure and control structure can be achieved. The use of the transparent end - cover allows operators to directly observe the internal structure and operating state. At the same time, it can effectively prevent environmental factors such as external dust and water vapor from eroding the internal control mechanism, improving the stability and reliability of the motor system. The design of the transparent end - cover makes the maintenance and repair of the internal control mechanism more convenient. Operators can directly observe the working state of the internal components, which helps to promptly discover problems and perform maintenance, improving the maintainability and reliability of the motor system. Moreover, an infrared sensor can be set on the second circuit board 71, and through the transparent cover plate, it can interact and sense with the outside.
[0027] An end - cover bearing 16 is provided on the outer side of the base 1. One end of the rotor housing 4 is provided with a side end - cover 41. The side end - cover 41 is provided with a rotating connection ring 42, and the rotating connection ring 42 is rotatably connected to the end - cover bearing 16. In this embodiment, the arrangement of the end - cover bearing 16 can effectively support the rotating connection ring 42 of the rotor housing 4, providing good rotational support and stability, which helps to ensure the smooth, reliable and low - friction working state of the rotor housing 4 during rotational motion. Through the rotational connection between the end - cover bearing 16 and the rotating connection ring 42, the friction between the rotor housing 4 and the end - cover can be effectively reduced, and good rotational support is provided, reducing the wear of mechanical components and energy loss, and extending the service life of the motor system.
[0028] The rotating shaft assembly 2 includes a rotating shaft 21, a rotating bearing 22, and a connecting member 23. One end of the rotating shaft 21 is connected to the rotor housing 4, and the other end is connected to the connecting member 23. The magnetic element 73 is disposed on the connecting member 23. The rotating bearing 22 is used to rotatably connect the rotating shaft 21 to the inner cavity 11. Specifically, an interference fit tooth 211 is provided at one end of the rotating shaft 21 connected to the rotor housing 4. The rotor housing 4 is provided with a reinforcing platform 43, and a mating hole is provided on the reinforcing platform 43. The interference fit tooth 211 is used to be assembled on the mating hole. The grating disk 62 is disposed on the rotor housing 4 and is located on the outer periphery of the reinforcing platform 43. In this embodiment, by rotatably connecting the rotating shaft 21 to the inner cavity 11 through the rotating bearing 22, the rotating shaft 21 of the rotor housing 4 can be effectively supported, and stable rotational support is provided, which helps to ensure the smooth, reliable, and low-friction working state of the rotor housing 4 during rotational motion. Through the cooperation of the interference fit tooth 211 and the mating hole on the reinforcing platform 43, a reliable connection between the rotor housing 4 and the rotating shaft 21 is achieved, ensuring the stability and non-loosening of the rotor housing 4 during rotation and improving the operating reliability of the motor system. The magnetic element 73 is disposed on the connecting member 23, which helps to realize the induction and detection of the magnetic field in the rotating shaft assembly 2, provides necessary parameter information such as position and speed for the motor control system, and is conducive to realizing the precise control of the motor. The grating disk 62 is disposed on the rotor housing 4 and is located on the outer periphery of the reinforcing platform 43, which can provide high-precision position detection. By combining with the reading chip 61, the precise induction of the rotor position is realized, providing important data support for the precise control of the motor.
[0029] A fixed bracket 44 is provided on the inner circumference of the rotor housing 4, and the rotor assembly 5 includes a plurality of rotor magnetic tiles 51, and the plurality of rotor magnetic tiles 51 are arranged on the fixed bracket 44. Specifically, the fixed bracket 44 is provided with a plurality of fixed slots 441, and bosses 442 are arranged at intervals between the plurality of fixed slots 441. The rotor magnetic tile 51 includes a first magnetic tile 511 and a second magnetic tile 512. The first magnetic tile 511 is arranged in the fixed slot 441, and the second magnetic tile 512 is arranged on the boss 442. In this embodiment, through the arrangement of the fixed bracket 44, the rotor magnetic tiles 51 can be effectively fixed and supported, providing a good fixing and supporting structure, which helps to ensure the stability and reliability of the rotor magnetic tiles 51 during rotation, thereby improving the operating efficiency and performance of the motor system. The fixed bracket 44 is provided with a plurality of fixed slots 441, which can effectively accommodate and fix the plurality of rotor magnetic tiles 51, enabling reasonable control of the spacing and layout between the rotor magnetic tiles 51, which is beneficial to improving the uniformity and stability of the magnetic field, thereby improving the output efficiency and operating accuracy of the motor system. The arrangement of the boss 442 helps to fix the second magnetic tile 512, and through the cooperation between the boss 442 and the second magnetic tile 512, the fixing and supporting of the second magnetic tile 512 are realized, ensuring the stability and reliability of the rotor magnetic tiles 51 during rotation. Through the design of arranging the first magnetic tile 511 in the fixed slot 441 and the second magnetic tile 512 on the boss 442, the reasonable layout and fixing of the rotor magnetic tiles 51 are realized, which helps to improve the uniformity and stability of the magnetic field, thereby improving the output power and operating accuracy of the motor system.
[0030] The first circuit board 81 is provided with connection lines. The base 1 is provided with a through hole 17, and one end of the through hole 17 communicates with the outer cavity 12, and one end of the connection line passes through the through hole 17. Specifically, one side of the reading chip 61 faces the grating disk 62 and is used for reading the grating disk 62; the magnetic field sensor 72 is a Hall sensor and is used for sensing the position of the magnetic element 73. In this embodiment, by arranging one side of the reading chip 61 to face the grating disk 62 and using it to read the grating disk 62, high-precision sensing and detection of the rotor position are realized, which helps to accurately obtain the position information of the rotor, thereby providing important data support for the precise control of the motor. The magnetic field sensor 72 adopts a Hall sensor and is used for sensing the position of the magnetic element 73, which can realize sensitive sensing and detection of magnetic field changes, providing necessary parameter information such as position and speed for the motor control system, which is beneficial to realizing the precise control of the motor. The connection line passes through the through hole 17 of the base 1, which can be effectively connected to the external circuit board, realizing the connection between the internal and external circuit boards, helping to realize data transmission and signal control, and improving the control accuracy and stability of the motor system.
[0031] The above embodiments only represent several implementation manners of the present utility model. The description thereof is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several modifications and improvements can still be made, and these all belong to the protection scope of the present utility model. Therefore, the protection scope of the patent of the present utility model shall be subject to the appended claims.
Claims
1. A built-in control mechanism for a direct drive motor, characterized in that: It includes a base, a rotating shaft assembly, a stator assembly, a rotor housing, a rotor assembly, a first sensing module, a second sensing module, and a control module. The base is provided with an inner cavity, an outer cavity, and an end cavity. The outer cavity is arranged at one end of the base, and the end cavity is arranged on the end face of the base and communicates with the inner cavity. The rotating shaft assembly is arranged in the inner cavity and one end thereof is connected to the rotor housing. The stator assembly is arranged on the outside of the base. The rotor assembly is arranged on the inner circumferential surface of the rotor housing and is opposite to the stator assembly. The control module is provided with a first circuit board, and a control chip is arranged on the first circuit board. The first sensing module includes a reading chip arranged on the first circuit board and a grating disk arranged on the rotor housing and opposite to the reading chip. The second sensing module includes a second circuit board, a magnetic field sensor, and a magnetic element. The magnetic element is arranged on the rotating shaft assembly. The second circuit board is arranged in the end cavity, and the magnetic field sensor is arranged on the second circuit board and is arranged opposite to the magnetic element. The first circuit board is electrically connected to the second circuit board.
2. The built-in control mechanism of the direct drive motor according to claim 1, wherein: At the opening of the end cavity of the base, there is an end cover fixing step, and an encapsulation end cover is installed on the end cover fixing step. The encapsulation end cover is a transparent end cover.
3. The built-in control mechanism of the direct drive motor according to claim 1, characterized in that: An end cover bearing is arranged on the outside of the base. One end of the rotor housing is provided with a side end cover, and the side end cover is provided with a rotating connection ring, and the rotating connection ring is rotatably connected to the end cover bearing.
4. The built-in control mechanism of the direct drive motor according to claim 1, wherein: The rotating shaft assembly includes a rotating shaft, a rotating bearing, and a connecting piece. One end of the rotating shaft is connected to the rotor housing and the other end is connected to the connecting piece. The magnetic element is arranged on the connecting piece, and the rotating bearing is used to rotatably connect the rotating shaft in the inner cavity.
5. The direct-drive motor built-in control mechanism according to claim 4, characterized in that: At the end of the rotating shaft connected to the rotor housing, there are interference fit teeth. The rotor housing is provided with a reinforcement platform, and a fitting hole is arranged on the reinforcement platform. The interference fit teeth are used to be assembled on the fitting hole. The grating disk is arranged on the rotor housing and is located on the outer circumference of the reinforcement platform.
6. The built-in control mechanism of the direct drive motor according to claim 1, characterized in that: A fixing bracket is arranged on the inner circumference of the rotor housing. The rotor assembly includes a plurality of rotor magnetic tiles, and the plurality of rotor magnetic tiles are arranged on the fixing bracket.
7. The direct-drive motor built-in control mechanism according to claim 6, characterized in that: The fixing bracket is provided with a plurality of fixing slots, and there are bosses arranged at intervals between the plurality of fixing slots. The rotor magnetic tile includes a first magnetic tile and a second magnetic tile. The first magnetic tile is arranged in the fixing slot, and the second magnetic tile is arranged on the boss.
8. The built-in control mechanism of the direct drive motor according to claim 1, characterized in that: The first circuit board is provided with a connecting wire, and the base is provided with a through hole. One end of the through hole communicates with the outer cavity, and one end of the connecting wire passes through the through hole.
9. The direct-drive motor built-in control mechanism according to claim 1, wherein: One side of the reading chip faces the grating disk and is used to read the grating disk. The magnetic field sensor is a Hall sensor and is used to sense the position of the magnetic element.
10. A motor, characterized in that: It includes the built-in control mechanism of the direct drive motor according to any one of claims 1 to 9.