Rotor and stator mounting mechanism for roller brush motor

Abstract

This utility model relates to the field of motor power technology, specifically a stator and rotor mounting mechanism for a roller brush motor. It includes a fixed shaft, a stator assembly, a rotor assembly, and a housing. The fixed shaft comprises a fixed connecting part, a stator connecting part, and an output connecting part arranged sequentially. The stator assembly is mounted on the stator connecting part. The fixed connecting part is used for fixing the shaft. The output connecting part is provided with a rotating connecting element. The housing includes a rotor housing and an output connecting end cover. The rotor housing covers the outside of the stator assembly. The output connecting end cover is located at one end of the rotor housing and connected to the rotating connecting element. The rotor assembly is located on the inner wall of the rotor housing and is opposite to the stator assembly. This utility model ensures the stability of motor operation. The stator connecting part provides an installation position for the stator assembly, enabling precise installation and ensuring accurate relative positioning between the stator and rotor, thus guaranteeing uniform distribution and efficient conversion of the motor's magnetic field.

Description

Technical Field

[0001] This utility model relates to the field of motor power technology, and in particular to a stator and rotor mounting mechanism for a roller brush motor. Background Technology

[0002] In today's cleaning equipment industry, roller brushes are widely used as core cleaning components in various cleaning tools, such as robotic vacuum cleaners, floor scrubbers, and handheld vacuum cleaners. The efficient operation of roller brushes depends on the power provided by the roller brush motor. However, the existing roller brush motor structural design has many problems that urgently need improvement.

[0003] The stator and rotor assembly mounting structure of some existing brush motors is not stable enough. The stator assembly is prone to displacement or shaking during operation, which not only disrupts the internal magnetic field and reduces motor efficiency, but also generates additional noise and vibration, affecting the user experience. Furthermore, it accelerates the wear of motor components and shortens the motor's lifespan. Utility Model Content

[0004] To address the aforementioned issues, this invention ensures the stability of motor operation. The stator connection provides an installation position for the stator assembly, enabling precise installation and ensuring accurate relative positioning between the stator and rotor. This guarantees a uniform distribution and efficient conversion of the motor's magnetic field, characteristic of a brush motor stator-rotor mounting mechanism.

[0005] The technical solution adopted by this utility model is: a rotor and stator mounting mechanism for a roller brush motor, including a fixed shaft, a stator assembly, a rotor assembly, and a housing. The fixed shaft includes a fixed connecting part, a stator connecting part, and an output connecting part arranged sequentially. The stator assembly is disposed on the stator connecting part. The fixed connecting part is used for fixing the shaft. The output connecting part is provided with a rotating connecting element. The housing includes a rotor housing and an output connecting end cover. The rotor housing covers the outside of the stator assembly. The output connecting end cover is disposed at one end of the rotor housing and connected to the rotating connecting element. The rotor assembly is disposed on the inner wall of the rotor housing and is opposite to the stator assembly.

[0006] A further improvement to the above scheme is that the output connection part is provided with a rotating connection step, and the rotating connection step is connected to the inner diameter of the rotating connection element.

[0007] A further improvement to the above scheme is that a locking element is provided at one end of the rotary connecting element, and a connecting hole is provided axially in the output connecting part. The locking element is connected to the connecting hole so that the rotary connecting step is fixed in the inner diameter of the rotary connecting element.

[0008] A further improvement to the above scheme is that the stator connection part is provided with a first stator support end near the fixed connection part and a second stator support end near the output connection part, and a groove is provided between the first stator support end and the second stator support end. The two ends of the stator assembly are respectively connected to the first stator support end and the second stator support end.

[0009] A further improvement to the above scheme is that the stator assembly includes a stator support, an insulating support, and a stator winding. The stator support is disposed on the stator connection part, the insulating support is disposed on the stator support, and the stator winding is disposed on the insulating support.

[0010] A further improvement to the above scheme is that the stator support is provided with multiple stator winding arms, and there are two insulating supports, which are respectively provided at both ends of the stator support. The insulating support is provided with a winding arm portion, and the winding arm portion is provided with a winding arm slot and a winding slot. The winding arm slot is engaged with the stator winding arm, and the stator winding is wound in the winding slot.

[0011] A further improvement to the above scheme is that a magnetic yoke is provided at the end of the stator winding arm, and a magnetic yoke fixing part is provided at the end of the insulating support located on the winding arm, the magnetic yoke fixing part being used to be fastened to the magnetic yoke.

[0012] A further improvement to the above scheme is that the rotor assembly includes a rotor support and rotor magnets. The rotor support is arranged in a ring shape inside the rotor housing. Multiple rotor magnets are arranged in a ring shape and evenly distributed on the rotor support. The rotor support is used to fix the rotor magnets inside the rotor housing.

[0013] A further improvement to the above scheme is that the cross-sectional shape of the rotor support is L-shaped, and the first and second surfaces of the rotor support are respectively attached to the wall surface of the rotor housing and the inner surface of the output connection end cover, with the first and second surfaces being perpendicular to each other.

[0014] A further improvement to the above scheme is that the rotor support is provided with multiple magnetic tile slots, and the multiple magnetic tile slots are evenly distributed in a ring on the rotor support, with one end of the rotor magnetic tile inserted into the magnetic tile slot.

[0015] The beneficial effects of this utility model are:

[0016] Compared to existing roller brush motors, this invention features a fixed connection part, a stator connection part, and an output connection part, all integrated with a fixed shaft. The fixed connection part securely mounts the fixed shaft, providing a stable foundation for the entire motor and preventing shaking or displacement during operation, thus ensuring motor stability. The stator connection part provides an installation position for the stator assembly, enabling precise installation and ensuring accurate relative positioning between the stator and rotor, guaranteeing uniform distribution and efficient conversion of the motor's magnetic field. The output connection part, with its rotating connecting element connected to the output connection end cover, achieves effective motor power output. This allows for the smooth transmission of rotational power from the motor's internal components to the external roller brush, reducing power loss during transmission, improving power transmission efficiency, and ensuring sufficient and stable power for the roller brush, thereby enhancing the cleaning effect of the cleaning equipment. The rotor housing, enclosing the stator assembly, prevents external dust and impurities from entering the motor, protecting the stator and rotor assemblies from contamination and damage, and extending the motor's service life. Attached Figure Description

[0017] Figure 1 This is a three-dimensional schematic diagram of the stator and rotor mounting mechanism of the roller brush motor of this utility model;

[0018] Figure 2 for Figure 1 A three-dimensional schematic diagram of the stator and rotor mounting mechanism of the medium-sized roller brush motor from another perspective;

[0019] Figure 3 for Figure 1 Front view schematic diagram of the stator and rotor mounting mechanism of the medium-sized roller brush motor;

[0020] Figure 4 for Figure 3 Sectional view of AA;

[0021] Figure 5 for Figure 1 A partial structural diagram of the stator and rotor mounting mechanism for a medium-sized roller brush motor;

[0022] Figure 6 for Figure 1 Exploded view of the stator and rotor mounting mechanism of the medium-sized roller brush motor.

[0023] Explanation of reference numerals in the attached drawings: Fixed shaft 1, Fixed connection part 11, Stator connection part 12, First stator support end 121, Second stator support end 122, Groove 123, Output connection part 13, Rotary connection step 131, Connection hole 132, Stator assembly 2, Stator bracket 21, Stator winding arm 211, Magnetic yoke part 212, Insulating bracket 22, Winding arm part 221, Winding arm slot 222, Winding slot 223, Magnetic yoke fixing part 224, Stator winding 23, Rotor assembly 3, Rotor bracket 31, First surface 311, Second surface 312, Magnetic tile slot 313, Rotor magnetic tile 32, Outer shell 4, Rotor housing 41, Output connection end cover 42, Rotary connection element 5, Locking element 51. Detailed Implementation

[0024] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. Preferred embodiments of this utility model are shown in the drawings. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this utility model.

[0025] It should be noted that when a component is said to be "fixed to" another component, it can be directly attached to the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. Figures 1-6As shown in one embodiment of this utility model, a rotor-stator mounting mechanism for a roller brush motor is provided, including a fixed shaft 1, a stator assembly 2, a rotor assembly 3, and a housing 4. The fixed shaft 1 includes a fixed connecting part 11, a stator connecting part 12, and an output connecting part 13 arranged sequentially. The stator assembly 2 is disposed on the stator connecting part 12. The fixed connecting part 11 is used to fix the shaft 1 in place. The output connecting part 13 is provided with a rotating connecting element 5. The housing 4 includes a rotor housing 41 and an output connecting end cover 42. The rotor housing 41 covers the outside of the stator assembly 2. The output connecting end cover 42 is disposed at one end of the rotor housing 41 and connected to the rotating connecting element 5. The rotor assembly 3 is disposed on the inner wall of the rotor housing 41 and is opposite to the stator assembly 2. In this embodiment, the fixed shaft 1 is provided with a fixed connecting part 11, a stator connecting part 12, and an output connecting part 13. The fixed connecting part 11 can firmly install the fixed shaft 1, providing a fixed foundation for the entire motor, preventing the motor from shaking or shifting during operation, and ensuring the stability of the motor operation. The stator connection part 12 provides an installation position for the stator assembly 2, enabling precise installation and ensuring accurate relative positioning between the stator and rotor, thus guaranteeing uniform distribution and efficient conversion of the motor's magnetic field. The rotary connection element 5 of the output connection part 13 connects to the output connection end cover 42, achieving effective output of motor power. This smoothly transmits the internal rotational power of the motor to the external roller brush, reducing power loss during transmission, improving power transmission efficiency, and ensuring the roller brush receives sufficient and stable power, thereby enhancing the cleaning effect of the cleaning equipment. The rotor housing 41 of the outer casing 4 covers the stator assembly 2, preventing external dust and impurities from entering the motor, protecting the stator assembly 2 and rotor assembly 3 from contamination and damage, and extending the motor's service life. In this embodiment, the rotor housing 41 and the output connection end cover 42 are integrally formed.

[0027] The output connection portion 13 is provided with a rotating connection step 131, which connects to the inner diameter of the rotating connection element 5. Specifically, one end of the rotating connection element 5 is provided with a locking element 51, and the output connection portion 13 is axially provided with a connection hole 132. The locking element 51 connects to the connection hole 132, so that the rotating connection step 131 is fixed to the inner diameter of the rotating connection element 5. In this embodiment, the connection between the rotating connection step 131 and the inner diameter of the rotating connection element 5 provides a precise and stable connection foundation. This increases the contact area, making the connection between the output connection portion 13 and the rotating connection element 5 tighter, effectively resisting vibrations and torques generated during motor operation, preventing relative displacement during operation, and ensuring the stability of power transmission. The fit between the rotating connection step 131 and the inner diameter of the rotating connection element 5 provides clear positioning and guidance for installation. Installers only need to align the rotating connection element 5 with the rotating connection step 131 and connect it to quickly complete the installation process, improving installation efficiency. The locking element 51, in conjunction with the connecting hole 132, securely fixes the rotating connecting step 131 to the inner diameter of the rotating connecting element 5, preventing the rotating connecting element 5 from loosening or falling off during operation. This ensures that the motor power can be continuously and stably transmitted from the output connection part 13 to the rotating connecting element 5. The locking element 51 is a screw, which facilitates assembly through threaded connection.

[0028] The stator connection portion 12 has a first stator support end 121 near the fixed connection portion 11 and a second stator support end 122 near the output connection portion 13. A groove 123 is provided between the first stator support end 121 and the second stator support end 122. The two ends of the stator assembly 2 are respectively connected to the first stator support end 121 and the second stator support end 122. In this embodiment, the first stator support end 121 and the second stator support end 122 provide precise and reliable installation positioning for the stator assembly 2. The connection of the two ends of the stator assembly 2 to these two support ends ensures that the stator assembly 2 will not undergo axial displacement during motor operation, keeping the relative position between the stator and the rotor stable, ensuring the uniformity and stability of the motor's magnetic field, and thus improving the motor's operating efficiency and reliability. The groove 123 provided between the first stator support end 121 and the second stator support end 122 increases the heat dissipation area of ​​the stator assembly 2. When the motor is running, the stator assembly 2 will generate heat, which will reduce the operating temperature of the stator assembly 2, reduce insulation aging and performance degradation caused by overheating, and extend the service life of the stator assembly 2.

[0029] The stator assembly 2 includes a stator support 21, an insulating support 22, and a stator winding 23. The stator support 21 is mounted on the stator connecting portion 12, the insulating support 22 is mounted on the stator support 21, and the stator winding 23 is mounted on the insulating support 22. Specifically, the stator support 21 has multiple stator winding arms 211, and there are two insulating supports 22, which are respectively located at both ends of the stator support 21. Each insulating support 22 has a winding arm portion 221, which has a winding arm slot 222 and a winding slot 223. The winding arm slot 222 is engaged with the stator winding arm 211, and the stator winding 23 is wound around the winding slot 223. In this embodiment, the stator support 21 is mounted on the stator connecting portion 12, providing a stable foundation for the entire stator assembly 2 and ensuring that it does not shake during motor operation. Two insulating supports 22 are respectively located at both ends of the stator support 21, and their arm slots 222 are engaged with the stator arms 211, ensuring a tight fit between the insulating supports 22 and the stator support 21, further enhancing the stability of the overall structure. The insulating supports 22 effectively isolate the stator windings 23 from the stator support 21, preventing leakage between the windings and the supports, thus improving the safety and reliability of the motor. Simultaneously, the arm portion 221 of the insulating supports 22 has winding slots 223 in which the stator windings 23 are wound, resulting in a more orderly and organized winding arrangement, reducing interference between windings, facilitating the generation of a stable magnetic field, and improving the electromagnetic conversion efficiency of the motor. The cooperation between multiple stator arms 211 and the arm slots 222, as well as the proper alignment of the winding slots 223 with the stator windings 23, makes the production process more standardized and improves production efficiency.

[0030] A magnetic yoke 212 is provided at the end of the stator arm 211, and a magnetic yoke fixing part 224 is provided at the end of the insulating support 22 located on the arm 221. The magnetic yoke fixing part 224 is used to lock onto the magnetic yoke 212. In this embodiment, the magnetic yoke fixing part 224 is locked onto the magnetic yoke 212, making the connection between the insulating support 22 and the stator arm 211 more stable. This can effectively resist the vibration and torque generated during motor operation, prevent the insulating support 22 from shifting or loosening during motor operation, ensure the reliability of the overall structure of the stator assembly 2, and thus ensure the stability of motor operation. The presence of the magnetic yoke 212 optimizes the magnetic circuit of the motor. The precise cooperation between the magnetic yoke fixing part 224 and the magnetic yoke 212 makes the magnetic circuit smoother, reduces magnetic leakage, and improves the efficiency of the magnetic circuit.

[0031] The rotor assembly 3 includes a rotor support 31 and rotor magnets 32. The rotor support 31 is arranged in a ring within the rotor housing 41. Multiple rotor magnets 32 are arranged in a ring and evenly distributed on the rotor support 31. The rotor support 31 is used to fix the rotor magnets 32 within the rotor housing 41. In this embodiment, the ring-shaped arrangement of the rotor support 31 within the rotor housing 41 provides stable support and positioning for the multiple rotor magnets 32. The ring-shaped even distribution of the multiple rotor magnets 32 on the rotor support 31, and the rotor support 31's ability to fix the magnets within the housing, ensures that the magnets will not shift or fall off due to centrifugal force or other factors during high-speed motor operation, thus guaranteeing the integrity and stability of the rotor structure and reducing the probability of failure. The ring-shaped even distribution of multiple magnets generates a uniform and stable magnetic field. A uniform magnetic field facilitates smooth torque output from the motor, making the rotation of the brush more stable and smooth, improving the motor's working efficiency and operating accuracy. Simultaneously, a stable magnetic field distribution can also reduce noise and vibration during motor operation.

[0032] The rotor support 31 has an L-shaped cross-section. The first surface 311 and the second surface 312 of the rotor support 31 respectively adhere to the wall of the rotor housing 41 and the inner surface of the output connection end cover 42, with the first surface 311 and the second surface 312 perpendicular to each other. In this embodiment, the first surface 311 and the second surface 312 of the rotor support 31 respectively adhere to the wall of the rotor housing 41 and the inner surface of the output connection end cover 42, and the first surface 311 and the second surface 312 are perpendicular to each other, allowing the rotor support 31 to be tightly fixed inside the motor. This provides stable support for the rotor assembly 3, ensuring that the rotor will not wobble or shift during high-speed rotation, greatly enhancing the stability of the entire motor structure and effectively reducing the probability of failures caused by vibration. The L-shaped design can reasonably distribute the centrifugal force and torque generated during rotor rotation. The perpendicular structure of the first surface 311 and the second surface 312 can evenly transmit these forces to the rotor housing 41 and the output connection end cover 42, avoiding excessive local stress and extending the service life of various motor components.

[0033] The rotor support 31 is provided with multiple magnetic tile slots 313, which are evenly distributed in a ring on the rotor support 31. One end of the rotor magnetic tile 32 is inserted into the magnetic tile slot 313. In this embodiment, the design of the magnetic tile slots 313 makes the installation of the rotor magnetic tile 32 simpler and more accurate. The evenly distributed ring of slots provides precise positioning for the magnetic tile. Workers only need to insert one end of the magnetic tile into the corresponding slot to quickly complete the installation, improving production efficiency, reducing installation difficulty, and reducing human error. The magnetic tile inserted into the slot effectively prevents it from shifting or falling off due to centrifugal force, vibration, or other factors during motor operation. This ensures the integrity and stability of the rotor assembly 3, reduces the possibility of failure, and extends the service life of the motor.

[0034] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A stator and rotor mounting mechanism for a roller brush motor, characterized in that: The device includes a fixed shaft, a stator assembly, a rotor assembly, and a housing. The fixed shaft includes a fixed connecting part, a stator connecting part, and an output connecting part arranged sequentially. The stator assembly is disposed on the stator connecting part. The fixed connecting part is used for fixing the shaft. The output connecting part is provided with a rotating connecting element. The housing includes a rotor housing and an output connecting end cover. The rotor housing covers the outside of the stator assembly. The output connecting end cover is disposed at one end of the rotor housing and connected to the rotating connecting element. The rotor assembly is disposed on the inner wall of the rotor housing and is opposite to the stator assembly.

2. The roller brush motor stator and rotor mounting mechanism according to claim 1, characterized in that: The output connection part is provided with a rotating connection step, which is connected to the inner diameter of the rotating connection element.

3. The roller brush motor stator and rotor mounting mechanism according to claim 2, characterized in that: One end of the rotary connecting element is provided with a locking element, and the output connecting part is provided with a connecting hole in the axial direction. The locking element is connected to the connecting hole so that the rotary connecting step is fixed in the inner diameter of the rotary connecting element.

4. The roller brush motor stator and rotor mounting mechanism according to claim 1, characterized in that: The stator connection part is provided with a first stator support end near the fixed connection part and a second stator support end near the output connection part. A groove is provided between the first stator support end and the second stator support end. The two ends of the stator assembly are respectively connected to the first stator support end and the second stator support end.

5. The rotor and stator mounting mechanism for a roller brush motor according to claim 1, characterized in that: The stator assembly includes a stator support, an insulating support, and a stator winding. The stator support is disposed on the stator connection portion, the insulating support is disposed on the stator support, and the stator winding is disposed on the insulating support.

6. The rotor and stator mounting mechanism for a roller brush motor according to claim 5, characterized in that: The stator support is provided with multiple stator winding arms, and there are two insulating supports, which are respectively located at both ends of the stator support. Each insulating support is provided with a winding arm portion, which is provided with a winding arm slot and a winding slot. The winding arm slot is engaged with the stator winding arm, and the stator winding is wound in the winding slot.

7. The rotor and stator mounting mechanism for a roller brush motor according to claim 6, characterized in that: The stator winding arm is provided with a magnetic yoke at its end, and the insulating bracket is provided with a magnetic yoke fixing part at the end of the winding arm. The magnetic yoke fixing part is used to be fastened to the magnetic yoke.

8. The rotor and stator mounting mechanism for a roller brush motor according to claim 1, characterized in that: The rotor assembly includes a rotor support and rotor magnets. The rotor support is arranged in a ring shape inside the rotor housing. Multiple rotor magnets are arranged in a ring shape and evenly distributed on the rotor support. The rotor support is used to fix the rotor magnets inside the rotor housing.

9. The rotor and stator mounting mechanism for a roller brush motor according to claim 8, characterized in that: The rotor support has an L-shaped cross section. The first and second sides of the rotor support are respectively attached to the wall of the rotor housing and the inner side of the output connection end cover. The first and second sides are perpendicular to each other.

10. The rotor and stator mounting mechanism for a roller brush motor according to claim 8, characterized in that: The rotor support is provided with multiple magnetic tile slots, which are evenly distributed in a ring on the rotor support. One end of the rotor magnetic tile is inserted into the magnetic tile slot.

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