Flat inner rotor motor
By incorporating sensing components in the internal rotor motor and optimizing the connection structure of the front and rear end covers, the problems of complex structure and poor stability of the internal rotor motor are solved, enabling efficient, intelligent operation and precise control of the motor.
Patent Information
- Application Number
- CN202423180404.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-23
- Publication Date
- 2025-12-12
- Estimated Expiration
- 2034-12-23
AI Technical Summary
Existing internal rotor motors have complex structures and poor operational stability, making it difficult to achieve precise control and flexible adaptability.
A sensing component is installed in the sensing mounting slot of the rear end cover and communicates with the rear rotating fixing part. Combined with the precise connection between the front end cover and the rear end cover, a stable and sealed cavity environment is constructed. The coaxial setting of the front end rotating fixing part and the rear end rotating fixing part ensures the stability and balance of the rotor assembly, while optimizing the spatial layout of the stator assembly.
It improves the structural strength and operating efficiency of the motor, enables real-time monitoring and feedback of the rotor components, enhances the motor's intelligence and adaptability, reduces manufacturing costs, and improves torque output capability.
Smart Images
Figure CN223666130U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to motor technical field especially relates to a flat type inner rotor motor. BACKGROUND
[0002] As a device that converts electrical energy into mechanical energy (or vice versa, i.e. converts mechanical energy into electrical energy), motor plays a crucial role in modern industry and daily life. From a professional point of view, motor mainly works based on electromagnetic induction principle, and its core components usually include stator, rotor and electromagnetic winding, etc. In the motor, the stator, as a stationary part, is usually equipped with electromagnetic winding for generating rotating magnetic field. The rotor, as a rotating part, rotates under the force in the rotating magnetic field through electromagnetic induction, thereby converting electrical energy into mechanical energy. In addition, motor has various types to adapt to different application scenarios. For example, DC motor and AC motor differ in structure and working principle, and are suitable for occasions requiring stable speed and wide speed range, respectively.
[0003] In existing inner rotor motor, the general structure is relatively complex, and in actual use, due to structural design reasons, the motor has poor running stability. Therefore, new design is needed for the existing motor structure. SUMMARY
[0004] To solve the above problems, the utility model induction assembly is arranged in the induction installation groove of the rear end cover, and is connected with the rear end rotating fixed part, thereby realizing real-time monitoring and feedback of the running state of the rotor assembly. Not only improves the intelligent level of the motor, but also enables the motor to be accurately controlled according to actual needs, enhances the adaptability and flexibility of the flat type inner rotor motor.
[0005] The utility model adopts the technical scheme of a flat type inner rotor motor, which comprises a shell, a rotor assembly and a stator assembly. The shell comprises a front end cover and a rear end cover. The front end cover and the rear end cover are connected to form a cavity. The front end cover is provided with a front end rotating fixed part. The rear end cover is provided with a rear end rotating fixed part. The front end rotating fixed part and the rear end rotating fixed part are arranged in opposite and coaxial positions. One end of the rear end cover is provided with an induction installation groove. One end of the induction installation groove is connected with the rear end rotating fixed part. An induction assembly is arranged in the induction installation groove. The stator assembly is arranged on the front end shell. The rotor assembly comprises an output element and a rotor magnetic tile. The output element is arranged on the front end rotating installation part and the rear end rotating installation part at both ends, respectively. The rotor magnetic tile is arranged on the outer periphery of the output element and opposite to the stator assembly.
[0006] Further improvement of the above scheme is that one end of the front end cover is provided with a front end connecting part, one end of the rear end cover is provided with a connecting step, one end of the front end connecting part is connected with the connecting step, and the connecting step is fixedly connected with the front end connecting part through screws.
[0007] Further improvement of the above scheme is that the front end rotating fixing part is provided with a front end bearing, the rear end rotating fixing part is provided with a rear end bearing, and the rear end bearing and the front end bearing are respectively used for connecting two ends of the output element.
[0008] Further improvement of the above scheme is that the inner diameter of the front end cover is provided with a fixing step, the stator assembly comprises a stator framework and a coil, a plurality of magnetic yoke parts are arranged on the stator framework, the coil is arranged on the magnetic yoke parts, and the fixing step is used for fixedly mounting the outer diameter of the stator framework.
[0009] Further improvement of the above scheme is that the rear end rotating fixing part is provided with a rear end floating groove, a floating spring plate is arranged on the rear end floating groove, one end of the floating spring plate abuts against the groove bottom surface of the rear end floating groove, and the other surface abuts against the rear end bearing.
[0010] Further improvement of the above scheme is that the output element comprises an output mounting part, an output connecting shaft and an output fixing ring, the output mounting part is arranged on the output connecting shaft, the output fixing ring is arranged on the output mounting part, the rotor magnetic tile is arranged on the output fixing ring, one end of the output connecting shaft is connected with the rear end rotating fixing part, and the other end penetrates through and is connected to the front end rotating fixing part.
[0011] Further improvement of the above scheme is that the outer periphery of the output mounting part is provided with a matching step, and the output fixing ring is arranged on the matching step.
[0012] Further improvement of the above scheme is that one end of the output connecting shaft extends to the outside of the front end cover and is provided with a driving connecting part, and the driving connecting part is provided with a positioning shaft pin.
[0013] Further improvement of the above scheme is that the induction assembly comprises an induction connecting seat, an induction sheet, an induction plate and an inductor, the induction connecting seat is arranged on the output element, the induction sheet is arranged on the induction connecting seat, the induction plate is arranged on the induction mounting groove, the inductor is arranged on the induction plate and opposite to the induction sheet.
[0014] Further improvement of the above scheme is that the induction plate is provided with a supporting column, the supporting column is used for mounting the induction plate on the induction mounting groove, and one end of the induction mounting groove is communicated to the outer surface of the rear end cover.
[0015] The utility model has the advantages of:
[0016] Compared to existing motors, this invention constructs a stable and sealed cavity environment through the precise connection of the front and rear covers, providing necessary protection and support for the internal components of the motor. This not only enhances the structural strength of the motor but also effectively prevents the intrusion of external impurities, extending the motor's service life. Secondly, the relative and coaxial arrangement of the front and rear rotating fixing parts ensures the stability and balance of the rotor assembly during high-speed rotation. This helps reduce vibration and noise, improving the motor's operating efficiency. Simultaneously, this structure facilitates the precise installation and positioning of output components, further enhancing the motor's performance. The sensing component is located in the sensing mounting groove of the rear cover and communicates with the rear rotating fixing part, thereby realizing real-time monitoring and feedback of the rotor assembly's operating status. This not only improves the motor's intelligence level but also enables precise control based on actual needs, enhancing its adaptability and flexibility. Furthermore, the stator assembly is directly mounted on the front housing; this layout optimizes the motor's spatial structure, making the entire motor more compact and lightweight. This helps reduce the motor's manufacturing cost while improving its ease of installation and use. Finally, the output element in the rotor assembly is securely connected via the front and rear rotary mounting portions, while the rotor magnets are tightly fitted to the outer periphery of the output element, forming effective magnetic field coupling with the stator assembly. This not only improves the motor's torque output capability but also enables the motor to convert energy more smoothly and efficiently during operation. Attached Figure Description
[0017] Figure 1 This is a three-dimensional schematic diagram of the flat internal rotor motor of this utility model;
[0018] Figure 2 for Figure 1 A top view of a medium-flat internal rotor motor;
[0019] Figure 3 for Figure 2 Sectional view of AA;
[0020] Figure 4 for Figure 1 Exploded view of a medium-flat internal rotor motor;
[0021] Figure 5 for Figure 1 An exploded view of a medium-flat internal rotor motor from another perspective.
[0022] Explanation of reference signs: shell 1, front end cover 11, front end connecting part 111, fixed step 112, rear end cover 12, induction installation groove 121, connecting step 122, front end rotating fixing part 13, front end bearing 131, rear end rotating fixing part 14, rear end floating groove 142, floating elastic sheet 143, rotor assembly 2, output element 21, output installation part 211, matching step 2111, output connecting shaft 212, driving connecting part 2121, positioning shaft pin 2122, output fixing ring 213, rotor magnetic tile 22, stator assembly 3, stator framework 31, magnetic yoke part 311, coil 32, induction assembly 4, induction connecting seat 41, induction sheet 42, induction plate 43, supporting column 431, inductor 44. DETAILED DESCRIPTION
[0023] For the purpose of facilitating the understanding of the present application, the present application will be described more fully below with reference to the accompanying drawings. In the drawings, preferred embodiments of the present application are shown. However, the present application can be realized in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete. It will be apparent that the scope of the present application is not limited to the embodiments set forth herein.
[0024] It should be noted that when an element is referred to as being "on" another element, it can be directly on the other element or intervening elements can also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements can also be present.
[0025] 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 the present application belongs. The terminology used in the description of the present application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the present application. As used in this specification and the appended claims, the singular forms "a", "an" and "the" include plural referents unless the content clearly dictates otherwise. Thus, for example, reference to "a component" includes a combination of two or more components, and the like. Figures 1-5As shown, in an embodiment of the utility model, relate to a kind of flat inner rotor motor, including shell 1, rotor assembly 2 and stator assembly 3, the shell 1 includes front end cover 11 and rear end cover 12, the front end cover 11 is connected with rear end cover 12, to form cavity, the front end cover 11 is provided with front end rotating fixed part 13, the rear end cover 12 is provided with rear end rotating fixed part 14, the front end rotating fixed part 13 is coaxially arranged opposite with rear end rotating fixed part 14, one end of the rear end cover 12 is provided with inductive installation groove 121, one end of the inductive installation groove 121 is communicated with rear end rotating fixed part 14, inductive component 4 is provided in the inductive installation groove 121, the stator assembly 3 is arranged on front end shell 1, the rotor assembly 2 includes output element 21 and rotor magnet tile 22, the two ends of output element 21 are respectively arranged on front end rotating fixed part 13 and rear end rotating installation part 14, the rotor magnet tile 22 is arranged at the outer periphery of output element 21, and is opposite with stator assembly 3.This embodiment is connected accurately by front end cover 11 and rear end cover 12, constructs a stable and sealed cavity environment, provides necessary protection and support for motor internal components.Not only the structural strength of motor is enhanced, but also effectively prevent external impurities from invading, prolong the service life of motor.Secondly, the front end rotating fixed part 13 is coaxially arranged opposite with rear end rotating fixed part 14, to ensure the stability and balance of rotor assembly 2 when high-speed rotating.It helps to reduce vibration and noise, improve the operating efficiency of motor.At the same time, this structure also provides convenience for the accurate installation and positioning of output element 21, further improves the performance of motor.Inductive component 4 is arranged in the inductive installation groove 121 of rear end cover 12, and is communicated with rear end rotating fixed part 14, so as to realize real-time monitoring and feedback to the running state of rotor assembly 2.Not only improve the intelligent level of motor, but also make motor can be accurately controlled according to actual demand, enhance its adaptability and flexibility.In addition, stator assembly 3 is directly arranged on front end shell 1, and this layout optimizes the space structure of motor, so that the whole motor is more compact, light.This helps to reduce the manufacturing cost of motor, while improving its installation and use convenience.Finally, the output element 21 in rotor assembly 2 is firmly connected by front end rotating fixed part 13 and rear end rotating installation part 14, and rotor magnet tile 22 is closely attached to the outer periphery of output element 21, and forms effective magnetic field coupling with stator assembly 3.Not only improve the torque output capacity of motor, but also make motor can be more stable and efficient when running Energy conversion.
[0026] One end of the front end cover 11 is provided with a front end connecting portion 111, one end of the rear end cover 12 is provided with a connecting step 122, one end of the front end connecting portion 111 is connected with the connecting step 122, and the connecting step 122 is fixedly connected with the front end connecting portion 111 through a screw. In this embodiment, the close fit of the front end connecting portion 111 and the connecting step 122 not only ensures the accurate positioning of the internal components of the motor, but also greatly enhances the assembly accuracy of the motor as a whole. This connection mode is fixed through a screw, further improving the firmness of the structure and effectively preventing loosening problems caused by vibration during motor operation.
[0027] The front end rotating fixing portion 13 is provided with a front end bearing 131, the rear end rotating fixing portion 14 is provided with a rear end bearing 141, and the rear end bearing 141 and the front end bearing 131 are respectively used to connect the two ends of the output element 21. Specifically, the inner diameter of the front end cover 11 is provided with a fixing step 112, the stator assembly 3 includes a stator skeleton 31 and a coil 32, the stator skeleton 31 is provided with a plurality of magnetic yoke portions 311, the coil 32 is wound on the magnetic yoke portions 311, and the fixing step 112 is used for the outer diameter fixed installation of the stator skeleton 31. In this embodiment, the fixing step 112 of the inner diameter of the front end cover 11 is designed to provide a reliable basis for the accurate installation of the stator assembly 3. The stator assembly 3 includes the stator skeleton 31 and the coil 32 precisely wound thereon, as well as the configuration of a plurality of magnetic yoke portions 311, which not only enhances the electromagnetic performance of the motor, but also ensures high efficiency conversion. Specifically, the fixed installation of the fixing step 112 on the outer diameter of the stator skeleton 31 effectively reduces the loosening of components caused by vibration or load changes, thereby improving the running stability and durability of the motor. In addition, the accurate installation of the front end and rear end bearings 141 not only ensures the flexible operation of the rotating parts, but also reduces the friction loss, prolongs the service life of the motor.
[0028] The rear end rotating fixing portion 14 is provided with a rear end floating groove 142, the rear end floating groove 142 is provided with a floating spring 143, one end of the floating spring 143 abuts against the groove bottom surface of the rear end floating groove 142, and the other surface abuts against the rear end bearing 141. In this embodiment, through the close abutment of one end of the floating spring 143 and the groove bottom surface of the rear end floating groove 142, the stability and positioning accuracy of the structure are ensured, and the loosening phenomenon caused by vibration or external force is effectively prevented. At the same time, the abutment design of the other surface of the floating spring 143 and the rear end bearing 141 not only enhances the supporting force of the bearing, but also gives it certain floating adjustment ability. This design can well adapt to the possible slight deformation and displacement during the operation of the motor, thereby effectively prolonging the service life of the bearing and improving the overall running stability and reliability of the motor.
[0029] The output element 21 comprises an output mounting portion 211, an output connecting shaft 212, and an output fixing ring 213, the output mounting portion 211 is arranged on the output connecting shaft 212, the output fixing ring 213 is arranged on the output mounting portion 211, the rotor magnetic tile 22 is arranged on the output fixing ring 213, one end of the output connecting shaft 212 is connected with the rear end rotating fixing portion 14, and the other end penetrates through and is connected to the front end rotating fixing portion 13. Specifically, the outer periphery of the output mounting portion 211 is provided with a matching step 2111, and the output fixing ring 213 is arranged on the matching step 2111. One end of the output connecting shaft 212 extends to the outside of the front end cover 11 and is provided with a driving connecting portion 2121, and the driving connecting portion 2121 is provided with a positioning shaft pin 2122. In this embodiment, the output mounting portion 211 is arranged on the output connecting shaft 212, which not only ensures the compactness of the structure, but also effectively improves the overall mechanical strength. The introduction of the matching step 2111 provides a stable support platform for the output fixing ring 213, further enhances the fixing effect of the rotor magnetic tile 22, and reduces the vibration and noise during operation. Secondly, the two ends of the output connecting shaft 212 are respectively connected with the rear end rotating fixing portion 14 and the front end rotating fixing portion 13, and this design not only ensures the stable rotation of the motor, but also improves the efficiency of power transmission. In particular, one end of the output connecting shaft 212 extends to the outside of the front end cover 11 and is equipped with a driving connecting portion 2121, so that the connection between the motor and the external driving device is more convenient and reliable. In addition, the design of the positioning shaft pin 2122 on the driving connecting portion 2121 provides a strong guarantee for the accurate control and positioning of the motor. This not only improves the operation accuracy of the motor, but also makes it possible for the motor to be used in various high-precision application scenarios.
[0030] The induction assembly 4 includes an induction connecting seat 41, an induction sheet 42, an induction plate 43, and an inductor 44. The induction connecting seat 41 is arranged on the output element 21, the induction sheet 42 is arranged on the induction connecting seat 41, the induction plate 43 is arranged on the induction mounting groove 121, and the inductor 44 is arranged on the induction plate 43 and opposite to the induction sheet 42. Specifically, the induction plate 43 is provided with a support column 431 for mounting the induction plate 43 on the induction mounting groove 121, one end of the induction mounting groove 121 being communicated to the outer surface of the rear end cover 12. In this embodiment, the induction assembly 4 ensures the stability and accuracy of the motor operation. The induction connecting seat 41 is stably arranged on the output element 21, providing reliable support for the induction sheet 42, so that the induction signal can be stably transmitted. The opposite arrangement of the induction sheet 42 and the inductor 44 further enhances the signal receiving and recognition capability, thereby improving the control accuracy of the motor. Secondly, the induction plate 43 is mounted on the induction mounting groove 121 through the support column 431, and this structure is not only stable, but also facilitates installation and maintenance. The design of the support column 431 enables the induction plate 43 to maintain a certain spatial position, ensuring effective docking with the inductor 44. At the same time, the communication design of the induction mounting groove 121 and the surface of the base facilitates the repair and replacement of the induction assembly 4, improving the reliability and service life of the motor. In addition, the structure of the induction assembly 4 also optimizes the spatial layout of the motor. The design of the flat-type inner rotor motor itself pursues compactness and light weight, and the ingenious arrangement of the induction assembly 4 not only meets the functional requirements, but also maximizes the reduction of space occupation, making the overall structure of the motor more compact and reasonable.
[0031] The above embodiments only express several embodiments of the present application, and the description is more specific and detailed, but it cannot be understood as limiting the scope of the present application. It should be noted that for ordinary skilled persons in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are within the scope of protection of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.
Claims
1. A flat internal rotor motor, characterized in that: The device includes a housing, a rotor assembly, and a stator assembly. The housing includes a front cover and a rear cover, which are connected to form a cavity. The front cover has a front rotating fixing part, and the rear cover has a rear rotating fixing part. The front rotating fixing part and the rear rotating fixing part are opposite to each other and coaxially arranged. One end of the rear cover has a sensing mounting groove, one end of which communicates with the rear rotating fixing part. A sensing component is disposed in the sensing mounting groove. The stator assembly is disposed on the front housing. The rotor assembly includes an output element and rotor magnets. The two ends of the output element are respectively disposed on the front rotating mounting part and the rear rotating mounting part. The rotor magnets are disposed on the outer periphery of the output element and opposite to the stator assembly.
2. The flat internal rotor motor according to claim 1, characterized in that: One end of the front cover is provided with a front connecting part, and one end of the rear cover is provided with a connecting step. One end of the front connecting part is connected to the connecting step, and the connecting step is fixedly connected to the front connecting part by screws.
3. The flat internal rotor motor according to claim 1, characterized in that: The front rotating fixing part is provided with a front bearing, and the rear rotating fixing part is provided with a rear bearing. The rear bearing and the front bearing are respectively used to connect the two ends of the output element.
4. The flat internal rotor motor according to claim 3, characterized in that: The inner diameter of the front end cover is provided with a fixed step. The stator assembly includes a stator frame and a coil. The stator frame is provided with multiple magnetic yokes. The coil is wound on the magnetic yokes. The fixed step is used to fix the outer diameter of the stator frame.
5. The flat internal rotor motor according to claim 3, characterized in that: The rear rotating fixing part is provided with a rear floating groove, and a floating spring is provided on the rear floating groove. One end of the floating spring abuts against the bottom surface of the rear floating groove, and the other end abuts against the rear bearing.
6. The flat internal rotor motor according to claim 1, characterized in that: The output element includes an output mounting part, an output connecting shaft, and an output fixing ring. The output mounting part is disposed on the output connecting shaft, the output fixing ring is disposed on the output mounting part, and the rotor magnet is disposed on the output fixing ring. One end of the output connecting shaft is connected to the rear rotating fixing part, and the other end passes through and is connected to the front rotating fixing part.
7. The flat internal rotor motor according to claim 6, characterized in that: The outer periphery of the output mounting part is provided with a mating step, and the output fixing ring is disposed on the mating step.
8. The flat internal rotor motor according to claim 6, characterized in that: One end of the output connecting shaft extends to the outside of the front end cover and is provided with a drive connecting part, which is provided with a positioning shaft pin.
9. The flat internal rotor motor according to claim 1, characterized in that: The sensing assembly includes a sensing connector, a sensing sheet, a sensing plate, and a sensor. The sensing connector is disposed on the output element, the sensing sheet is disposed on the sensing connector, the sensing plate is disposed on the sensing mounting slot, and the sensor is disposed on the sensing plate and opposite to the sensing sheet.
10. The flat internal rotor motor according to claim 9, characterized in that: The sensor plate is provided with a support column, which is used to install the sensor plate on the sensor mounting slot. One end of the sensor mounting slot is connected to the outer surface of the rear cover.