Rolling brush motor

Abstract

This utility model relates to the field of motor power technology, specifically a roller brush motor, comprising a fixed shaft, a stator assembly, a rotor assembly, end covers, and a housing. The fixed shaft includes a fixed mounting end, a control mounting end, a stator mounting end, and a rotary connecting end arranged sequentially. The stator assembly is mounted on the stator mounting end, and the rotary connecting end is provided with a rotary connecting shaft. The housing is disposed outside the stator assembly and is connected at both ends to the end cover and the rotary connecting shaft, respectively. The end cover is provided with a first rotary connecting element connected to the fixed mounting end. The control mounting end is provided with a sealing ring, and a sealing ring is provided between the sealing ring and the first rotary connecting element. This utility model has significant technical advantages in terms of structure, sealing, power transmission, and maintenance, and can provide reliable and efficient power support for cleaning equipment.

Description

Technical Field

[0001] This utility model relates to the field of motor power technology, and in particular to 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 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] From a stability perspective, the stator and rotor assembly structures of some roller brush motors are not robust enough. The stator assembly is prone to displacement or wobbling 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, this unstable structure accelerates wear on motor components, shortening the motor's lifespan. Regarding power transmission, the design of the rotating connection section in existing roller brush motors has flaws. The fit between the rotating connection element and the rotating connection shaft is not precise enough, easily leading to power transmission losses. This prevents the motor's output power from being fully converted into the rotational power of the roller brush, resulting in energy waste.

[0004] Furthermore, existing roller brush motors are inadequate in terms of ease of maintenance and installation. Therefore, improving the structural design of roller brush motors is of significant practical importance. Utility Model Content

[0005] To solve the above problems, this utility model has significant technical advantages in terms of structure, sealing, power transmission and maintenance, and can provide reliable and efficient power support for cleaning equipment.

[0006] The technical solution adopted by this utility model is: a roller brush motor, including a fixed shaft, a stator assembly, a rotor assembly, an end cover, and a housing. The fixed shaft includes a fixed mounting end, a control mounting end, a stator mounting end, and a rotary connecting end arranged sequentially. The stator assembly is disposed on the stator mounting end. The rotary connecting end is provided with a rotary connecting shaft. The housing is disposed outside the stator assembly and is connected to the end cover and the rotary connecting shaft at both ends, respectively. The end cover is provided with a first rotary connecting element connected to the fixed mounting end. The control mounting end is provided with a sealing fixing ring. A sealing ring is provided between the sealing fixing ring and the first rotary connecting element.

[0007] A further improvement to the above solution is that the control mounting end is provided with a connecting groove, one end of which extends through to the fixed mounting end; the stator assembly is provided with a fixed bracket on the side facing the end cover, a control board is mounted on the fixed bracket, the control board is provided with a connector, and the connector is disposed on the connecting groove and extends toward the fixed mounting end.

[0008] A further improvement to the above solution is that the outer side of the connector is provided with an arc-shaped surface, which matches the outer diameter of the fixed mounting end.

[0009] A further improvement to the above solution is that the fixed bracket is provided with a support platform, the support platform is provided with a connecting column, and the control plate is provided with a through hole. The support platform is used to support the control plate, and the through hole is used to cooperate with the connecting column for fixing by screws.

[0010] A further improvement to the above scheme is that stator support portions are provided at both ends of the stator mounting end, and the stator support portions are used for supporting and mounting the stator assembly.

[0011] A further improvement to the above scheme is that a second rotary connecting element is provided on the inner diameter of the rotary connecting end, and the second rotary connecting element is connected to the rotary connecting shaft.

[0012] 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 mounting end, the insulating support is disposed on the stator support, and the stator winding is disposed on the insulating support.

[0013] A further improvement to the above scheme is that the stator support is provided with multiple stator winding arms, and two insulating supports are provided, which are respectively provided at both ends of the stator support. Each 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. The rotor assembly includes a rotor support and rotor magnets, and the rotor magnets are opposite to the stator windings.

[0014] A further improvement to the above solution is that the end cap is provided with a fixed inner ring and a fixed outer ring, the fixed inner ring is provided with a fixed step, the first rotating connecting element is provided on the fixed step, and the fixed outer ring is connected to the outer shell.

[0015] A further improvement to the above solution is that the outer diameter of the fixed outer ring is provided with a fixing buckle, the outer shell is provided with a fixing slot, and the fixing buckle is used to be engaged in the fixing slot.

[0016] The beneficial effects of this utility model are:

[0017] Compared to existing roller brush motors, this invention features a segmented fixed shaft design, including a fixed mounting end, a control mounting end, a stator mounting end, and a rotary connecting end, providing mounting positions for each component. The stator assembly is located on the stator mounting end, ensuring the stability of the motor's electromagnetic conversion structure and contributing to efficient power generation. The outer casing is located outside the stator assembly, with end caps and a rotary connecting shaft connected to both ends, creating a complete and compact motor structure. This enhances the overall mechanical strength and stability of the motor, better resisting vibrations and impacts generated during cleaning equipment operation. The sealing ring between the sealing ring at the control mounting end and the first rotary connecting element effectively prevents external dust, moisture, and other impurities from entering the motor. Especially in working environments where cleaning equipment may come into contact with water and dust, this prevents these impurities from damaging the internal electrical and mechanical components of the motor, such as preventing short circuits in the stator windings due to moisture and preventing bearing wear due to dust, significantly extending the motor's service life. The rotary connecting shaft at the rotary connecting end cooperates with the first rotary connecting element on the end cap, ensuring smooth power output from the motor. This invention ensures efficient and stable power transmission, enabling the roller brush to achieve stable rotational speed and torque, thereby improving the cleaning effect of the cleaning equipment. This invention possesses significant technical advantages in structure, sealing, power transmission, and maintenance, providing reliable and efficient power support for cleaning equipment. Attached Figure Description

[0018] Figure 1 This is a three-dimensional schematic diagram of the roller brush motor of this utility model;

[0019] Figure 2 for Figure 1 Front view schematic diagram of the middle roller brush motor;

[0020] Figure 3 for Figure 2 Sectional view of AA;

[0021] Figure 4 for Figure 3 Enlarged diagram of point A in the diagram;

[0022] Figure 5 for Figure 1 A partial structural diagram of the medium roller brush motor;

[0023] Figure 6 for Figure 1 An exploded view of the stator assembly of a medium-sized roller brush motor.

[0024] Explanation of reference numerals in the attached drawings: Fixed shaft 1, Fixed mounting end 11, Control mounting end 12, Sealing fixing ring 121, Sealing ring 122, Connecting groove 123, Stator mounting end 13, Stator support part 131, Rotary connecting end 14, Second rotary connecting element 141, Rotary connecting shaft 15, Stator assembly 2, Fixed bracket 21, Support platform 211, Connecting column 212, Control plate 22, Through hole 221, Connector 23, Arc surface 231, Stator bracket 24, Stator winding arm 241, Insulating bracket 25, Winding arm part 251, Winding arm slot 252, Winding slot 253, Stator winding 26, Rotor assembly 3, Rotor bracket 31, Rotor magnet 32, End cover 4, Fixed inner ring 41, Fixed step 411, Fixed outer ring 42, Fixed buckle 421, Outer shell 5, Fixed slot 51, First rotary connecting element 6. Detailed Implementation

[0025] 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.

[0026] 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.

[0027] 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 roller brush motor is disclosed, comprising a fixed shaft 1, a stator assembly 2, a rotor assembly 3, an end cover 4, and a housing 5. The fixed shaft 1 includes a fixed mounting end 11, a control mounting end 12, a stator mounting end 13, and a rotary connecting end 14 arranged sequentially. The stator assembly 2 is mounted on the stator mounting end 13, and the rotary connecting end 14 is provided with a rotary connecting shaft 15. The housing 5 is disposed outside the stator assembly 2 and its two ends are respectively connected to the end cover 4 and the rotary connecting shaft 15. The end cover 4 is provided with a first rotary connecting element 6 connected to the fixed mounting end 11. The control mounting end 12 is provided with a sealing ring 121, and a sealing ring 122 is provided between the sealing ring 121 and the first rotary connecting element 6. In this embodiment, the fixed shaft 1, through a segmented design, includes a fixed mounting end 11, a control mounting end 12, a stator mounting end 13, and a rotary connecting end 14, providing mounting positions for each component. The stator assembly 2 is mounted on the stator mounting end 13, ensuring the stability of the motor's electromagnetic conversion structure and contributing to the motor's efficient power generation. The outer casing 5 is located outside the stator assembly 2, with end caps 4 and rotating connecting shafts 15 connected to its two ends respectively, forming a complete and compact motor structure. This enhances the overall mechanical strength and stability of the motor, better resisting vibrations and impacts generated during the operation of the cleaning equipment. The sealing ring 122 between the sealing ring 121 of the control mounting end 12 and the first rotating connecting element 6 effectively prevents external dust, moisture, and other impurities from entering the motor. Especially in working environments where the cleaning equipment may come into contact with water and dust, this prevents these impurities from damaging the internal electrical and mechanical components of the motor, such as preventing short circuits in the stator windings due to moisture and preventing bearing wear due to dust, greatly extending the motor's service life. The rotating connecting shaft 15 of the rotating connecting end 14 cooperates with the first rotating connecting element 6 of the end cap 4, ensuring smooth power output from the motor. This ensures efficient and stable power transmission, allowing the roller brush to obtain stable speed and torque, thereby improving the cleaning effect of the cleaning equipment. This embodiment has significant technical advantages in terms of structure, sealing, power transmission and maintenance, and can provide reliable and efficient power support for cleaning equipment.

[0028] The control mounting end 12 is provided with a connecting groove 123, one end of which extends to the fixed mounting end 11. The stator assembly 2 has a fixed bracket 21 on the side facing the end cover 4. A control board 22 is mounted on the fixed bracket 21, and the control board 22 has a connector 23. The connector 23 is disposed on the connecting groove 123 and extends towards the fixed mounting end 11. Specifically, the outer side of the connector 23 has an arc-shaped surface 231, which matches the outer diameter of the fixed mounting end 11. In this embodiment, the control mounting end 12 has a connecting groove 123, one end of which extends to the fixed mounting end 11, providing a dedicated installation path and space for the connector 23 of the control board 22. This makes the installation of the connector 23 more orderly and avoids messy wiring, which is conducive to the compact layout of the internal structure of the motor, reducing the overall size of the motor and making it more suitable for use in cleaning equipment with high space requirements. A fixed bracket 21 is provided on the side of the stator assembly 2 facing the end cover 4, and the control board 22 is mounted thereon, ensuring the stability of the control board 22 installation. As the control core of the motor, the stable installation of the control board 22 ensures that it will not loosen or shift due to vibration or other factors during motor operation, thereby guaranteeing the accurate transmission and processing of control signals. The connector 23 of the control board 22 is located on the connecting groove 123 and extends towards the fixed mounting end 11, shortening the connection distance between the control board 22 and other components of the motor, reducing signal transmission loss and interference, and improving control accuracy and response speed.

[0029] The fixed bracket 21 is provided with a support platform 211, on which a connecting column 212 is provided. The control plate 22 is provided with a through hole 221. The support platform 211 is used to support the control plate 22, and the through hole 221 is used to mate with the connecting column 212 for fixing with screws. In this embodiment, the support platform 211 of the fixed bracket 21 provides a solid support surface for the control plate 22, which can effectively distribute the weight of the control plate 22 itself and the vibration stress generated by the motor during operation, avoiding deformation or damage to the control plate 22 due to uneven stress. The mating of the connecting column 212 and the through hole 221 on the control plate 22 provides accurate positioning for the installation of the control plate 22, ensuring the accuracy of the installation position of the control plate 22. Fixing with screws then tightly connects the control plate 22 and the fixed bracket 21 into a single unit, further enhancing the overall stability.

[0030] Stator support portions 131 are provided at both ends of the stator mounting end 13, which are used to support the stator assembly 2. In this embodiment, the stator support portions 131 provide a stable support foundation for the stator assembly 2. As a key part of the motor to achieve energy conversion, the stability of the stator assembly 2 directly affects the performance of the motor. The stator support portions 131 can accurately position the stator assembly 2, preventing it from shifting or shaking during motor operation. This helps maintain the stability of the internal magnetic field of the motor, making the electromagnetic conversion process of the motor more efficient and smooth, thereby improving the operating efficiency of the motor.

[0031] A second rotary connecting element 141 is provided on the inner diameter of the rotary connecting end 14, and the second rotary connecting element 141 is connected to the rotary connecting shaft 15. In this embodiment, the second rotary connecting element 141 ensures stable and efficient power transmission between the rotary connecting end 14 and the rotary connecting shaft 15. This allows the rotation of the rotary connecting shaft 15 to be accurately transmitted to the rotary connecting end 14, reducing power loss during transmission and making the power output of the roller brush motor more direct and effective. This, in turn, increases the rotational speed and torque of the roller brush, enabling the roller brush to perform cleaning work more powerfully. The second rotary connecting element 141 also positions and guides the rotary connecting shaft 15, reducing vibration and noise during motor operation.

[0032] See Figure 6As shown, the stator assembly 2 includes a stator support 24, an insulating support 25, and a stator winding 26. The stator support 24 is disposed on the stator mounting end 13, the insulating support 25 is disposed on the stator support 24, and the stator winding 26 is disposed on the insulating support 25. Specifically, the stator support 24 is provided with multiple stator winding arms 241, and there are two insulating supports 25, which are respectively disposed at both ends of the stator support 24. Each insulating support 25 is provided with a winding arm portion 251, which is provided with a winding arm slot 252 and a winding slot 253. The winding arm slot 252 is engaged with the stator winding arm 241, and the stator winding 26 is wound around the winding slot 253. The rotor assembly 3 includes a rotor support 31 and a rotor magnet 32, which is opposite to the stator winding 26. In this embodiment, the insulating bracket 25 is mounted on the stator bracket 24 and secured to the stator winding arm 241 via the arm slot 252, enhancing the overall structural stability. Two insulating brackets 25 are respectively positioned at both ends of the stator bracket 24, effectively supporting the stator winding 26 and preventing it from shifting due to vibration during motor operation, thus ensuring the reliability of motor operation. The insulating brackets 25 provide excellent insulation, preventing direct contact between the stator winding 26 and the stator bracket 24, which could lead to leakage and other safety hazards, thereby improving the safety of motor operation. Simultaneously, the winding slot 253 on the arm portion 251 provides a regular winding space for the stator winding 26, ensuring its neat arrangement, reducing mutual interference between windings, improving the electromagnetic conversion efficiency of the motor, and consequently increasing the motor's power and torque output, resulting in better cleaning performance of the roller brush.

[0033] The end cap 4 is provided with a fixed inner ring 41 and a fixed outer ring 42. The fixed inner ring 41 is provided with a fixed step 411, and the first rotary connecting element 6 is disposed on the fixed step 411. The fixed outer ring 42 is connected to the outer shell 5. Specifically, the outer diameter of the fixed outer ring 42 is provided with a fixed buckle 421, and the outer shell 5 is provided with a fixed slot 51. The fixed buckle 421 is used to engage with the fixed slot 51. In this embodiment, the fixed inner ring 41 of the end cap 4 is provided with a fixed step 411 to install the first rotary connecting element 6, providing a precise and stable installation position for the first rotary connecting element 6. This ensures that the first rotary connecting element 6 remains stable during motor operation, avoiding the impact of shaking or displacement on the normal operation of the motor, ensuring the fitting accuracy between the internal rotating parts of the motor, and making the rotation of the motor smoother. The fixed buckle 421 on the outer diameter of the fixed outer ring 42 cooperates with the fixed slot 51 of the outer shell 5 to form a reliable connection. The end cover 4 is easy to install and remove, which improves production and maintenance efficiency. It also ensures that the end cover 4 is tightly connected to the outer shell 5, preventing dust, moisture and other impurities from entering the motor. This protects important components such as the stator and rotor inside the motor 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 rolling brush motor, characterized by: The device includes a fixed shaft, a stator assembly, a rotor assembly, an end cover, and a housing. The fixed shaft includes a fixed mounting end, a control mounting end, a stator mounting end, and a rotary connecting end arranged sequentially. The stator assembly is mounted on the stator mounting end. The rotary connecting end is provided with a rotary connecting shaft. The housing is located outside the stator assembly and is connected to the end cover and the rotary connecting shaft at both ends, respectively. The end cover is provided with a first rotary connecting element that connects to the fixed mounting end. The control mounting end is provided with a sealing ring, and a sealing ring is provided between the sealing ring and the first rotary connecting element.

2. The rolling brush motor of claim 1, wherein: The control mounting end is provided with a connecting groove, one end of which extends through to the fixed mounting end; the stator assembly is provided with a fixed bracket on the side facing the end cover, a control board is mounted on the fixed bracket, the control board is provided with a connector, the connector is disposed on the connecting groove and extends toward the fixed mounting end.

3. The roll brush motor of claim 2, wherein: The connector has an arc-shaped surface on its outer side, which matches the outer diameter of the fixed mounting end.

4. The roll brush motor of claim 2, wherein: The fixed bracket is provided with a support platform, and a connecting column is provided on the support platform. The control plate is provided with a through hole. The support platform is used to support the control plate, and the through hole is used to mate with the connecting column for fixing by screws.

5. The rolling brush motor of claim 1, wherein: The stator mounting end is provided with stator support parts at both ends, and the stator support parts are used for supporting and installing the stator assembly.

6. The rolling brush motor of claim 1, wherein: The inner diameter of the rotary connecting end is provided with a second rotary connecting element, which is connected to the rotary connecting shaft.

7. The roller brush motor according to claim 1, characterized in that: The stator assembly includes a stator bracket, an insulating bracket, and a stator winding. The stator bracket is disposed on the stator mounting end, the insulating bracket is disposed on the stator bracket, and the stator winding is disposed on the insulating bracket.

8. The roll brush motor of claim 7, wherein: 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, 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. The rotor assembly includes a rotor support and rotor magnets, and the rotor magnets are opposite to the stator windings.

9. The rolling brush motor of claim 1, wherein: The end cap is provided with a fixed inner ring and a fixed outer ring. The fixed inner ring is provided with a fixed step. The first rotary connecting element is provided on the fixed step. The fixed outer ring is connected to the outer shell.

10. The roll brush motor of claim 9, wherein: The outer diameter of the fixed outer ring is provided with a fixing buckle, and the outer shell is provided with a fixing slot. The fixing buckle is used to be locked onto the fixing slot.

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