floor scrubber motor

Abstract

This utility model relates to the field of power motor technology, specifically a floor scrubber motor, including a fixed base, a fixed connecting ring, a stator assembly, a shaft assembly, a rotor housing, and a rotor assembly. One end of the fixed base has a connecting part that connects to the fixed connecting ring. The stator assembly includes a stator frame and stator windings, with the stator windings mounted on the stator frame. The inner diameter of the stator frame is used to connect the connecting part to the fixed connecting ring. The shaft assembly is mounted on the fixed connecting ring and connected to the rotor housing. The rotor assembly is mounted on the inner wall of the rotor housing and is opposite to the stator assembly. The inner diameter of the stator frame in this utility model securely connects the fixed connecting ring and the connecting part, forming a stable overall structure. During high-speed motor operation, it effectively resists vibration and external impact, reduces relative displacement and loosening between components, and ensures the overall reliability and durability of the motor.

Description

Technical Field

[0001] This utility model relates to the field of power motor technology, and in particular to a floor scrubber motor. Background Technology

[0002] In the field of cleaning appliances, floor scrubbers have gained popularity among consumers due to their efficient and convenient cleaning capabilities. As one of the core components of a floor scrubber, the performance of the motor directly affects the overall effectiveness of the machine.

[0003] Currently, many floor scrubber motors on the market suffer from structural instability due to design flaws. In some motors, the connections between components are not secure enough during assembly, leading to loosening after prolonged use. This causes abnormal vibration and noise during operation, reducing the user experience and potentially shortening the motor's lifespan. Furthermore, some floor scrubber motors have poorly designed heat dissipation structures. Under prolonged high-load operation, internal heat is difficult to dissipate effectively, causing the motor temperature to rise excessively. This, in turn, affects the stability of the internal electronic components and mechanical structure, increasing the probability of motor failure.

[0004] Furthermore, due to the poor structural stability of the motor, the power output of the floor scrubber is not stable enough when dealing with complex floor conditions, which greatly reduces the cleaning effect. Therefore, improving the structure of the floor scrubber motor and enhancing its stability is an important issue that the floor scrubber industry urgently needs to address in order to meet consumers' demands for high-quality floor scrubbers. Utility Model Content

[0005] To address the aforementioned issues, the inner diameter of the stator frame in this invention is used to fix the connecting ring and the connecting part, forming a stable overall structure. This ensures a tight connection between the fixing seat, the connecting ring, and the stator assembly, effectively resisting vibration and external impacts during high-speed motor operation, reducing relative displacement and loosening between components, and guaranteeing the overall reliability and durability of the floor scrubber motor.

[0006] The technical solution adopted by this utility model is as follows: a floor scrubber motor, including a fixed base, a fixed connecting ring, a stator assembly, a rotating shaft assembly, a rotor housing, and a rotor assembly. One end of the fixed base is provided with a connecting part, which is connected to the fixed connecting ring. The stator assembly includes a stator frame and a stator winding. The stator winding is disposed on the stator frame, and the inner diameter of the stator frame is used to connect the connecting part to the fixed connecting ring. The rotating shaft assembly is disposed on the fixed connecting ring and connected to the rotor housing. The rotor assembly is disposed on the inner wall of the rotor housing and is opposite to the stator assembly.

[0007] A further improvement to the above solution is that the mounting base is provided with a wiring groove and a side through groove, and the stator assembly is provided with a control board on one side of the side through groove. The side through groove is used for the connection lines of the control board to extend toward the wiring groove, and the wiring groove is used for the connection lines to extend toward the end of the mounting base.

[0008] A further improvement to the above solution is that the connecting part is provided with a connecting step, the outer diameter of the fixed connecting ring is the same as that of the connecting step, and the stator frame covers and fixes the connecting step and the fixed connecting ring.

[0009] A further improvement to the above solution is that the inner diameter of the fixed connecting ring is provided with an installation step, the rotating shaft assembly includes a bearing and a rotating shaft, the bearing is installed on the installation step, one end of the rotating shaft is connected to the bearing, and the other end is connected to the rotor housing.

[0010] A further improvement to the above scheme is that the rotor housing is provided with a riveting ring, and the rotor housing is connected to the rotating shaft through the riveting ring.

[0011] A further improvement to the above scheme is that an output positioning post is provided on one side of the rotor housing, and the output positioning post is provided with a positioning mounting hole.

[0012] A further improvement to the above scheme is that the stator frame is provided with multiple stator winding arms, and the stator windings are wound on the stator winding arms.

[0013] A further improvement to the above scheme is that an end cap is provided at one end of the rotor housing, a sealing element is provided on the inner diameter of the end cap, and a sealing lip is provided on the inner diameter of the sealing element, and the sealing lip is in sealing contact with the outer diameter of the fixed seat.

[0014] A further improvement to the above scheme is that the end cover is provided with a connecting outer ring and a connecting inner ring, the connecting outer ring is fastened to the port of the rotor housing, the connecting inner ring is provided with a sealing step, and the outer diameter of the sealing element is sealed and abutted against the sealing step.

[0015] A further improvement to the above scheme is that the rotor assembly includes a rotor support and rotor magnets. The rotor support is located at the bottom of the rotor housing and has multiple rotor slots. Multiple rotor magnets are provided, with one end of each magnet located on a rotor slot.

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

[0017] Compared to existing floor scrubber motors, this invention offers superior structural stability. The inner diameter of the stator frame is used to securely connect the fixing ring and the connecting part, forming a robust overall structure. This ensures a tight connection between the mounting base, the fixing ring, and the stator assembly, effectively resisting vibration and external impacts during high-speed motor operation. It reduces relative displacement and loosening between components, guaranteeing the overall reliability and durability of the motor and lowering the failure rate caused by structural instability. Connecting the connecting part and the fixing ring via the stator frame simplifies the assembly process. Compared to other complex connection methods, it reduces assembly steps and the required additional connectors, improving production efficiency and lowering production costs. The stator frame's connection between the connecting part and the fixing ring helps ensure the positional accuracy of the stator assembly. The stator windings are positioned on the stator frame; accurate positioning ensures a stable air gap between the stator windings and the rotor assembly, generating a uniform magnetic field during motor operation. This improves the motor's electromagnetic conversion efficiency, reduces energy loss, and ultimately enhances the cleaning effect and endurance of the floor scrubber. Attached Figure Description

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

[0019] Figure 2 for Figure 1 Front view of the motor of the floor scrubber;

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

[0021] Figure 4 for Figure 1 An exploded diagram of the motor of a floor scrubber;

[0022] Figure 5 for Figure 1 An exploded view of the motor of a floor scrubber from another perspective.

[0023] Explanation of reference numerals in the attached drawings: 1. Fixed base; 11. Connecting part; 111. Connecting step; 12. Cable tray; 13. Side through groove; 2. Fixed connecting ring; 21. Mounting step; 3. Stator assembly; 31. Stator frame; 311. Stator winding arm; 32. Stator winding; 33. Control board; 33. Shaft assembly; 4. Bearing; 41. Rotating shaft; 42. Rotor housing; 5. Riveting ring; 51. Output positioning post; 521. Positioning mounting hole; 521. End cover; 53. Connecting outer ring; 531. Connecting inner ring; 532. Sealing step; 533. Seal; 54. Sealing inner lip; 541. Rotor assembly; 6. Rotor bracket; 61. Rotor slot; 611. Rotor magnet; 62. 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 1-5 As shown in one embodiment of this utility model, a floor scrubber motor is disclosed, including a fixed base 1, a fixed connecting ring 2, a stator assembly 3, a rotating shaft assembly 4, a rotor housing 5, and a rotor assembly 6. One end of the fixed base 1 is provided with a connecting portion 11, which is connected to the fixed connecting ring 2. The stator assembly 3 includes a stator frame 31 and a stator winding 32, with the stator winding 32 disposed on the stator frame 31. The inner diameter of the stator frame 31 is used to connect the connecting portion 11 to the fixed connecting ring 2. The rotating shaft assembly 4 is disposed on the fixed connecting ring 2 and connected to the rotor housing 5. The rotor assembly 6 is disposed on the inner wall of the rotor housing 5 and is opposite to the stator assembly 3. From a structural stability perspective, this embodiment utilizes the inner diameter of the stator frame 31 to securely connect the fixed connecting ring 2 and the connecting portion 11, forming a stable overall structure. The fixed base 1, fixed connecting ring 2, and stator assembly 3 are tightly connected, effectively resisting vibration and external impact during high-speed motor operation, reducing relative displacement and loosening between components, ensuring the overall reliability and durability of the motor, and reducing the failure rate caused by structural instability. The connection between the connecting part 11 and the fixed connecting ring 2 is achieved through the stator frame 31, simplifying the assembly process. Compared to other complex connection methods, this reduces assembly steps and the required additional connecting parts, improving production efficiency and reducing production costs. The stator frame 31 connects the connecting part 11 and the fixed connecting ring 2, helping to ensure the positional accuracy of the stator assembly 3. The stator winding 32 is set on the stator frame 31; its accurate position ensures a stable air gap between the stator winding 32 and the rotor assembly 6, enabling the motor to generate a uniform magnetic field during operation, improving the motor's electromagnetic conversion efficiency, reducing energy loss, and thus enhancing the cleaning effect and endurance of the floor scrubber.

[0027] The mounting base 1 is provided with a wiring groove 12 and a side through groove 13. The stator assembly 3 has a control board 33 located on one side of the side through groove 13. The side through groove 13 allows the connecting wires of the control board 33 to extend towards the wiring groove 12, and the wiring groove 12 allows the connecting wires to extend towards the end of the mounting base 1. In this embodiment, the design of the side through groove 13 and the wiring groove 12 provides a dedicated channel for the connecting wires of the control board 33. The side through groove 13 allows the connecting wires of the control board 33 to extend orderly from the control board 33 towards the wiring groove 12, while the wiring groove 12 further guides the connecting wires towards the end of the mounting base 1. The connecting wires are no longer randomly distributed inside the motor, avoiding tangling and crossing, making the wiring inside the motor neater and more standardized, facilitating subsequent installation, maintenance, and repair work. When troubleshooting or replacing components in the motor is required, the clear and orderly wiring allows workers to quickly find the corresponding connecting wires, improving work efficiency. In terms of electrical performance, reasonable wiring reduces electromagnetic interference between connecting wires. Because the connecting lines are distributed according to the predetermined channels, the distance and relative position are effectively controlled, reducing the possibility of electromagnetic coupling and thus ensuring the stability and accuracy of control signal transmission.

[0028] The connecting part 11 is provided with a connecting step 111. The outer diameter of the fixed connecting ring 2 is the same as that of the connecting step 111. The stator frame 31 covers and fixes the connecting step 111 to the fixed connecting ring 2. Specifically, the inner diameter of the fixed connecting ring 2 is provided with an mounting step 21. The rotating shaft assembly 4 includes a bearing 41 and a rotating shaft 42. The bearing 41 is mounted on the mounting step 21. One end of the rotating shaft 42 is connected to the bearing 41, and the other end is connected to the rotor housing 5. In this embodiment, the connecting step 111 of the connecting part 11 and the fixed connecting ring 2 with the same outer diameter are covered and fixed by the stator frame 31, forming a tight and firm connection structure. This makes the fixed seat 1 and the fixed connecting ring 2 tightly connected. When the motor is running at high speed, it can effectively resist vibration and torque, prevent loosening or displacement between components, ensure the stability of the overall motor structure, reduce failures caused by structural problems, and extend the service life of the motor. The design of the connecting step 111 and the mounting step 21 greatly improves assembly efficiency. The connecting step 111 provides precise positioning for the installation of the fixed connecting ring 2, allowing the stator frame 31 to easily achieve a fixed connection between the two, reducing assembly difficulty and time. The mounting step 21 on the inner diameter of the fixed connecting ring 2 provides a specific position for the bearing 41, ensuring accurate installation and guaranteeing the relative positional accuracy of the rotating shaft 42 with other components, thus improving assembly accuracy. In terms of motor performance, the precisely installed bearing 41 supports the rotating shaft 42, effectively reducing friction and vibration during rotation, lowering energy loss, and improving motor operating efficiency.

[0029] The rotor housing 5 is equipped with a riveting ring 51, which connects the rotor housing 5 to the rotating shaft 42. In this embodiment, the connection between the rotor housing 5 and the rotating shaft 42 via the riveting ring 51 provides a robust and reliable connection. Riveting effectively resists the enormous torque and centrifugal force generated by the floor scrubber motor during high-speed operation. This ensures that there will be no relative displacement or loosening between the rotor housing 5 and the rotating shaft 42, making the power transmission of the motor more stable and efficient. Compared to other connection methods, such as bolted connections, which may loosen under long-term vibration, the stability of riveting greatly reduces the probability of failure, improving the overall reliability and service life of the motor.

[0030] One side of the rotor housing 5 is provided with an output positioning post 52, and the output positioning post 52 is provided with a positioning mounting hole 521. In this embodiment, the output positioning post 52 and the positioning mounting hole 521 on one side of the rotor housing 5 play a key role. The output positioning post 52 and the positioning mounting hole 521 provide a precise positioning reference for the connection of the motor with other components, such as the cleaning brush head of the floor scrubber or other transmission devices. During the assembly process, by aligning the corresponding components with the positioning mounting hole 521, the relative positions between the components can be ensured to be accurate. This not only improves assembly efficiency and reduces assembly errors, but also ensures good cooperation between the motor and other components, enabling the floor scrubber to operate more smoothly.

[0031] The stator frame 31 is provided with multiple stator winding arms 311, and the stator windings 32 are wound on the stator winding arms 311. In this embodiment, the layout of multiple stator winding arms 311 helps to evenly distribute the stator windings 32, optimize the magnetic field distribution, and improve the magnetic performance and efficiency of the motor. By reasonably arranging the winding arms, the mechanical support of the stator windings 32 can be enhanced, vibration and noise can be reduced, and the smoothness of motor operation can be improved. Secondly, the multi-winding arm structure facilitates the installation and maintenance of the windings, simplifies the manufacturing process, and improves production efficiency.

[0032] An end cap 53 is provided at one end of the rotor housing 5. A sealing element 54 is provided on the inner diameter of the end cap 53, and a sealing inner lip 541 is provided on the inner diameter of the sealing element 54. The sealing inner lip 541 seals against the outer diameter of the fixed base 1. Specifically, the end cap 53 is provided with a connecting outer ring 531 and a connecting inner ring 532. The connecting outer ring 531 is fastened to the port of the rotor housing 5, and the connecting inner ring 532 is provided with a sealing step 533. The outer diameter of the sealing element 54 seals against the sealing step 533. In this embodiment, an end cap 53 is provided at one end of the rotor housing 5. Through the reasonable design of the end cap 53 structure, external dust, moisture and other contaminants are effectively prevented from entering the motor, protecting the normal operation of the stator winding 32 and the rotor assembly 6. The inner diameter of the end cover 53 is equipped with a sealing element 54, and the sealing element 54 has a sealing inner lip 541. This inner lip abuts against the outer diameter of the fixed seat 1 to form a tight sealing interface, significantly improving the sealing effect and preventing liquid or dust from entering the motor along the axial or radial direction, thus enhancing the motor's waterproof and dustproof capabilities. This ensures that the floor scrubber can maintain normal motor operation in humid and dusty working environments, extending the motor's service life. The end cover 53 also has a connecting outer ring 531 and a connecting inner ring 532. The connecting outer ring 531 is connected to the rotor housing 5 port by a snap-fit ​​method, ensuring that the end cover 53 is reliably fixed and preventing loosening due to vibration or impact, thereby ensuring the continuity of the seal. The connecting inner ring 532 has a sealing step 533, and the outer diameter of the sealing element 54 abuts against the sealing step 533, further enhancing the tightness of the sealing structure, ensuring a long-lasting sealing effect and easy assembly and maintenance.

[0033] The rotor assembly 6 includes a rotor support 61 and rotor magnets 62. The rotor support 61 is located at the bottom of the rotor housing 5 and has multiple rotor slots 611. Multiple rotor magnets 62 are provided, with one end positioned on a rotor slot 611. In this embodiment, the rotor support 61, located at the bottom of the rotor housing 5, provides a stable support foundation for the installation of the rotor magnets 62, helping to ensure the overall rigidity and alignment of the rotor, preventing eccentricity or vibration during operation, thereby improving the motor's dynamic balance. Secondly, the rotor support 61 has multiple rotor slots 611, evenly distributed, facilitating the installation and positioning of the rotor magnets 62, ensuring secure fixing of the magnets, and reducing the risk of loosening or falling off during operation. Multiple magnets help enhance the rotor's magnetic field strength, improve the motor's magnetic efficiency, thereby increasing output torque and speed while reducing energy consumption. Achieving a uniform magnetic field distribution reduces static and dynamic imbalances, resulting in smoother motor operation, lower vibration and noise, and improved user comfort.

[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 walk behind scrubber motor characterized in that: The device includes a fixed base, a fixed connecting ring, a stator assembly, a shaft assembly, a rotor housing, and a rotor assembly. One end of the fixed base is provided with a connecting part, which is connected to the fixed connecting ring. The stator assembly includes a stator frame and a stator winding. The stator winding is disposed on the stator frame, and the inner diameter of the stator frame is used to connect the connecting part to the fixed connecting ring. The shaft assembly is disposed on the fixed connecting ring and connected to the rotor housing. The rotor assembly is disposed on the inner wall of the rotor housing and is opposite to the stator assembly.

2. The walk behind machine motor of claim 1, wherein: The mounting base is provided with a wiring groove and a side through groove. The stator assembly is provided with a control board on one side of the side through groove. The side through groove is used for the connection lines of the control board to extend toward the wiring groove, and the wiring groove is used for the connection lines to extend toward the end of the mounting base.

3. The walk behind machine motor of claim 1, wherein: The connecting part is provided with a connecting step, the outer diameter of the fixed connecting ring is the same as that of the connecting step, and the stator frame covers and fixes the connecting step and the fixed connecting ring.

4. The walk behind machine motor of claim 3, wherein: The inner diameter of the fixed connecting ring is provided with an installation step. The rotating shaft assembly includes a bearing and a rotating shaft. The bearing is installed on the installation step. One end of the rotating shaft is connected to the bearing, and the other end is connected to the rotor housing.

5. The walk behind machine motor of claim 4, wherein: The rotor housing is provided with a riveting ring, and the rotor housing is connected to the rotating shaft through the riveting ring.

6. The walk behind machine motor of claim 1, wherein: One side of the rotor housing is provided with an output positioning post, and the output positioning post is provided with a positioning mounting hole.

7. The walk behind machine motor of claim 1, wherein: The stator frame is provided with multiple stator arms, and the stator windings are wound on the stator arms.

8. The floor scrubber motor according to claim 1, characterized in that: One end of the rotor housing is provided with an end cap, and the inner diameter of the end cap is provided with a sealing element, and the inner diameter of the sealing element is provided with a sealing lip, which is in sealing contact with the outer diameter of the fixed seat.

9. The walk behind machine motor of claim 8, wherein: The end cap is provided with a connecting outer ring and a connecting inner ring. The connecting outer ring is fastened to the port of the rotor housing. The connecting inner ring is provided with a sealing step. The outer diameter of the sealing element is in sealing contact with the sealing step.

10. The walk behind machine motor of claim 1, wherein: The rotor assembly includes a rotor support and rotor magnets. The rotor support is located at the bottom of the rotor housing and has multiple rotor slots. Multiple rotor magnets are provided, with one end of each magnet located in a rotor slot.

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