Motor device and cleaning equipment

Abstract

The utility model provides a motor device and cleaning equipment. The motor device comprises a support assembly, a rotor assembly and a stator assembly. The rotor assembly comprises a rotating shaft, a magnetic piece arranged on the peripheral side of the rotating shaft and a pair of bearings arranged on the peripheral side of the rotating shaft and located at the top and the bottom of the magnetic piece. The pair of support frames is partially located on the circumferential side of the pair of bearings. The rotor assembly rotates relative to the stator assembly; the stator assembly comprises a stator iron core, a pair of frameworks arranged at the top and the bottom of the stator iron core, and an electromagnetic coil wound on the pair of frameworks; wherein the stator iron core and the pair of frameworks are located on the peripheral side of the magnetic part, the frameworks extend in the axial direction of the rotating shaft and in the direction of the bearing and define a containing area, the bearing and the supporting frame are partially located in the containing area, and the frameworks do not make contact with the supporting frame in the axial direction and the radial direction of the rotating shaft. By shortening the span of the pair of bearings in the axial direction of the rotating shaft, the rigidity of the rotor assembly is improved, and the purpose of reducing noise is achieved.

Description

Technical Field

[0001] This application relates to the field of cleaning technology, and more particularly to an electric motor device and cleaning equipment. Background Technology

[0002] With the continuous development of intelligentization and automation, motors are widely used in various industries and fields due to their high efficiency, reliability, and strong controllability. Motor noise is the sound generated during motor operation, typically originating from mechanical vibration, electromagnetic interactions, and airflow. Motor noise not only affects the comfort of the operating environment but can also impact equipment performance and lifespan. Therefore, taking effective noise reduction measures to improve motor noise is particularly important. Currently, motor noise reduction measures are costly and often ineffective, affecting user experience. Utility Model Content

[0003] This application provides an improved motor device and cleaning equipment.

[0004] This application provides an electric motor device, comprising:

[0005] A support assembly, including a pair of support frames;

[0006] A rotor assembly is assembled on the support assembly; the rotor assembly includes a rotating shaft, a magnetic element disposed around the rotating shaft, and a pair of bearings disposed around the rotating shaft and located at the top and bottom of the magnetic element; wherein the pair of support frames are partially located around the pair of bearings; and

[0007] A stator assembly is assembled on the support assembly, and the rotor assembly rotates relative to the stator assembly. The stator assembly includes a stator core, a pair of frames disposed at the top and bottom of the stator core, and an electromagnetic coil wound on the pair of frames. The stator core and the pair of frames are both located on the periphery of the magnetic component. The frames extend axially toward the bearing of the rotating shaft and enclose a containing area. The bearing and the support frame are partially located within the containing area, and the frames do not contact the support frame axially or radially with the rotating shaft.

[0008] Preferably, there is a gap between the side wall of the support frame facing the skeleton and the side wall of the skeleton facing the support frame.

[0009] Preferably, the skeleton includes a main skeleton portion and a skeleton isolation portion connected to the main skeleton portion. The skeleton isolation portion is located on the side of the main skeleton portion facing the bearing and protrudes axially from the main skeleton portion on the rotating shaft to form the containing area. The support frame includes a support main portion and a support fixing portion connected to the support main portion. The support fixing portion is located on the side of the support main portion facing the bearing and protrudes axially from the support fixing portion on the rotating shaft, and is located on the periphery of the bearing. The support fixing portion and the bearing are located within the containing area, and the gap exists between the outer wall of the support fixing portion and the inner wall of the skeleton isolation portion.

[0010] Preferably, the support fixing part includes a first fixing surface, a second fixing surface, and a third fixing surface, the third fixing surface being smoothly connected to the first fixing surface and the second fixing surface respectively; the skeleton isolation part includes a first isolation surface, a second isolation surface, and a third isolation surface, the third isolation surface being smoothly connected to the first isolation surface and the second isolation surface respectively; wherein, there is a gap between the first fixing surface and the first isolation surface, a gap between the second fixing surface and the second isolation surface, and a gap between the third fixing surface and the third isolation surface.

[0011] Preferably, the third fixing surface is inclined from bottom to top and along the axial direction of the rotating shaft from the center of the rotating shaft away from the center; and / or

[0012] Preferably, the third isolation surface is inclined from bottom to top and along the axial direction of the rotating shaft from the center of the rotating shaft away from the center.

[0013] Preferably, the minimum width of the first fixing surface is not less than 0.3 mm.

[0014] Preferably, the minimum width of the second isolation surface is not less than 0.3 mm.

[0015] Preferably, the minimum gap between the third fixing surface and the third isolation surface is not less than 0.3 mm.

[0016] Preferably, the minimum gap between the first fixing surface and the first isolation surface is not less than 0.3 mm.

[0017] Preferably, the minimum gap between the second fixing surface and the second isolation surface is not less than 0.3 mm.

[0018] Preferably, the third fixing surface is a plane or an arc surface.

[0019] Preferably, the third isolation surface is a plane or an arc surface.

[0020] Preferably, the pair of bearings and the magnetic element have an installation gap in the axial direction of the rotating shaft.

[0021] Preferably, the size range of the installation gap is 0.2mm to 0.3mm.

[0022] Preferably, the pair of bearings are coaxially mounted with the magnetic component.

[0023] Preferably, the pair of support frames includes a first support frame and a second support frame distributed axially on the rotating shaft; both the first support frame and the second support frame are provided with a plurality of fixing holes, which extend axially on the rotating shaft; the motor device further includes a plurality of fixing members, which pass through the fixing holes and are respectively assembled with the first support frame and the second support frame axially on the rotating shaft.

[0024] Preferably, the motor device further includes a housing assembly, which includes a first housing and a second housing. The first housing is assembled on the first support frame, and the second housing is assembled on the second support frame. The motor device also includes a main control board and a plurality of connection terminals, which are electrically connected to the electromagnetic coil and the main control board, respectively, and the main control board is assembled on the second support frame.

[0025] Preferably, the motor device further includes a moving impeller, which is disposed on the side of the first support frame away from the bearing and located inside the housing assembly. One end of the rotating shaft passes through the first support frame and is connected to the moving impeller, and the other end of the rotating shaft is fixed to the second support frame.

[0026] Preferably, the first support member has an air guide channel communicating with the outside on its periphery, and the motor device further includes a fixed impeller, which is disposed in the air guide channel.

[0027] This application also provides a cleaning device, including: a motor device as described in any of the above embodiments.

[0028] This application discloses a motor device and a cleaning device. The motor device includes a support assembly, a rotor assembly, and a stator assembly. A pair of support frames of the support assembly are located around a pair of bearings of the rotor assembly. The stator core and a pair of frames of the stator assembly are located around a magnetic component. The frames extend axially towards the magnetic component on the rotating shaft, forming an enclosing area. The bearings and support frames are located within this enclosing area, and the frames do not contact the support frames axially or radially on the rotating shaft. This configuration shortens the axial span of the bearings on the rotating shaft, increases the rigidity of the rotor assembly, and reduces noise. This noise reduction method is effective, easy to implement, low-cost, and improves the user experience.

[0029] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0030] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0031] Figure 1 The diagram shown is a structural schematic of one embodiment of the motor device of this application.

[0032] Figure 2 As shown Figure 1 The diagram shows the structure of the motor device from the front view.

[0033] Figure 3 As shown Figure 2 A cross-sectional schematic diagram of the motor device shown.

[0034] Figure 4 As shown Figure 2 A partial enlarged view of point A1 of the motor device shown.

[0035] Figure 5 As shown Figure 2 A partial enlarged view of point A2 of the motor device shown. Detailed Implementation

[0036] The motor device and cleaning equipment provided in the embodiments of this application will be described in detail below with reference to the accompanying drawings. Unless otherwise specified, the features of the various embodiments and implementation methods described below can be combined arbitrarily with each other.

[0037] Electric motors are widely used in various industries and fields due to their high efficiency, reliability, and strong controllability. This application uses the application in cleaning equipment as an example for illustration.

[0038] As cleaning equipment rapidly develops towards higher suction power, lower noise, and longer battery life, the main contributors to higher suction power are high motor efficiency, high power output, and low flow loss in the machine. Lower noise levels are achieved through lower motor noise and significant overall noise reduction. Since motor noise is the primary source of noise in cleaning equipment, improving motor noise helps improve the overall noise level of the machine.

[0039] Currently, motor noise reduction in cleaning equipment is mainly divided into three categories. The first is electromagnetic noise, which is reduced by optimizing the electromagnetic design. The second is fluid noise, which is reduced by optimizing the fluid design. The third is structural noise, which includes measures such as improving dynamic balance, increasing component concentricity, and using high-strength materials, all of which can improve motor noise.

[0040] Among the noise reduction solutions mentioned above, optimizing the electromagnetic scheme can reduce electromagnetic noise. However, there are already platform-based electromagnetic solutions on the market. A particular solution for reducing electromagnetic noise may need to be adapted to a new platform, but the time and manpower costs invested are disproportionate to the final benefits. In this case, it is necessary to consider whether it is even necessary. Fluid noise, except for blade frequencies, is generally broadband noise and does not cause discomfort to the ears. Therefore, this noise reduction solution is not effective and results in a poor user experience. Structural noise reduction has many directions, such as rotor dynamic balancing noise reduction and bearing grease noise reduction. However, this type of noise reduction solution is costly and the noise reduction effect does not reach the ideal state.

[0041] Therefore, this application provides a motor device 1 that has a significant noise reduction effect, is easy to implement, and is low in cost. For details of the noise reduction scheme, please refer to the following text. Figures 1 to 5 The illustrated embodiments are described in detail.

[0042] Figure 1 The diagram shown is a structural schematic of one embodiment of the motor device 1 of this application. Figure 2 As shown Figure 1 The diagram shows the structure of the motor device 1 from the main viewpoint. Figure 3 As shown Figure 2 A cross-sectional schematic diagram of the motor device 1 shown. (As shown) Figures 1 to 3 As shown, the motor device 1 includes a support assembly 10, a rotor assembly 20, and a stator assembly 30. Both the rotor assembly 20 and the stator assembly 30 are assembled on the support assembly 10. The support assembly 10 is used to fix the rotor assembly 20 and the stator assembly 30. The motor device 1 converts electrical energy into mechanical energy based on electromagnetic induction. When current flows through the motor device 1, it interacts with the magnetic field of the stator assembly 30, generating an induced force that causes the rotor assembly 20 to rotate relative to the stator assembly 30, thus generating a driving force.

[0043] exist Figures 1 to 3In the illustrated embodiment, the motor device 1 of this application can be a double-bearing arrangement. A double-bearing arrangement can be understood as the motor device 1 including a pair of bearings, which are arranged symmetrically vertically. Specifically, the support assembly 10 includes a pair of support frames 11. The pair of support frames 11 are arranged symmetrically vertically. The rotor assembly 20 includes a rotating shaft 21, a magnetic element 22 disposed around the rotating shaft 21, and a pair of bearings 23 disposed around the rotating shaft 21 and located at the top and bottom of the magnetic element 22. The rotating shaft 21 and the magnetic element 22 are coaxially mounted. The pair of bearings 23 are arranged symmetrically vertically at the top and bottom of the magnetic element 22. The pair of support frames 11 are correspondingly disposed at the top and bottom of the pair of bearings 23, wherein the pair of support frames 11 are partially located around the pair of bearings 23. The pair of support frames 11 serve to fix the pair of bearings 23. The stator assembly 30 includes a stator core 31, a pair of frames 32 disposed at the top and bottom of the stator core 31, and an electromagnetic coil 33 wound on the pair of frames 32. The stator core 31 and a pair of bobbins 32 are both located around the magnetic component 22. An electromagnetic coil 33 is wound around the bobbins 32 along the axial direction Y of the rotating shaft 21, which can be vertical. When the electromagnetic coil 33 of the stator assembly 30 is energized, it interacts with the stator core 31 to generate electromagnetic induction, driving the rotating shaft 21, magnetic component 22, and a pair of bearings 23 to rotate, thus generating a driving force. The bobbins 32 isolate the stator core 31 from the electromagnetic coil 33, preventing leakage due to wear of the electromagnetic coil 33 on the stator core 31.

[0044] exist Figures 1 to 3In the illustrated embodiment, the frame 32 extends along the axial Y direction of the rotating shaft 21 towards the bearing 23 and encloses a containing area. The frame 32 also extends vertically towards the bearings 23 located at its upper and lower ends, forming a containing area. The bearings 23 and the support frame 11 are partially located within this containing area. Specifically, in the vertical direction, the bearings 23 and the support frame 11 partially extend into the containing area, intersecting (or partially overlapping) the frame 32 in the vertical direction. This shortens the span of a pair of bearings 23 along the axial Y direction of the rotating shaft, improving the rigidity of the rotor assembly and preventing problems such as increased motor noise and premature bearing damage and failure caused by excessive rotor system sway during high-speed rotation, thus achieving noise reduction. In this embodiment, since the support frame 11 is located outside the bearings 23, the minimum size of the containing area should be greater than the maximum size of the bearings 23, and the minimum size of the containing area should also be greater than the maximum size of the support frame 11. This facilitates the accommodation of the bearings 23 and the support frame 11. The frame 32 is located on the axial Y and radial X directions of the rotating shaft 21 and does not contact the support frame 11. When the bearing 23 and the support frame 11 partially extend into the containment area to shorten the span of a pair of bearings 23 on the axial Y direction of the rotating shaft, in order to avoid mutual interference between the periphery of the support frame 11 and the inner side of the frame 32, gaps are provided between the frame 32 and the support frame 11 in the vertical and horizontal directions. This ensures that when the support frame 11 rotates together with the bearing 223, the support frame 11 and the frame 32 do not contact each other and are not interfered with, thus ensuring good safety.

[0045] The motor device 1 of this application improves the rigidity of the rotor assembly by shortening the span (dimension) of a pair of bearings 23 in the axial Y direction of the shaft 21, thereby reducing noise. This noise reduction method has a significant noise reduction effect, is easy to implement, has low cost, and improves user experience.

[0046] Figure 4 As shown Figure 2 A partial enlarged view of point A1 of the motor device 1 shown. Figure 5 As shown Figure 2 A partially enlarged view of point A2 in the motor assembly 1 shown. (Combined with...) Figures 1 to 5As shown, there is a gap between the side wall of the support frame 11 facing the skeleton 32 and the side wall of the skeleton 32 facing the support frame 11. In this embodiment, the side wall of the support frame 11 facing the skeleton 32 can be the side wall of the support frame 11 away from the bearing 23 in the radial direction X of the rotating shaft 21, that is, the outer side wall of the support frame 11 relative to the bearing 23. The side wall of the skeleton 32 facing the support frame 11 can be the inner side wall of the skeleton 32 facing the bearing 23. Since the bearing 23 and the support frame 11 extend into the skeleton 32 together, if there is no gap between the inner side wall of the skeleton 32 and the outer side wall of the support frame 11, noise may be generated due to mutual collision and interference. Therefore, in this embodiment, a gap is provided between the inner side wall of the skeleton 32 and the outer side wall of the support frame 11. This gap can avoid interference between the support frame 11 and the skeleton 32, which helps to reduce noise.

[0047] exist Figures 3 to 5 In the illustrated embodiment, the frame 32 includes a frame main body 321 and a frame isolation part 322 connected to the frame main body 321. The frame isolation part 322 and the frame main body 321 are an integral structure. The frame main body 321 extends radially (horizontally) along the rotating shaft 21, wrapping around the top or bottom of the stator core 31 to fix the electromagnetic coil 33. The frame isolation part 322 is located on the side of the frame main body 321 facing the bearing 23, and protrudes relative to the frame main body 321 in the axial direction (vertical) of the rotating shaft 21 to form an enclosing area. When the electromagnetic coil 33 is wound around the frame main body 321, the top height of the frame isolation part 322 is greater than the top height of the electromagnetic coil 33. This arrangement also allows for a certain amount of space at the top of the electromagnetic coil 33, protecting it and preventing the top of the electromagnetic coil 33 from colliding with the top of the support frame 11, thus avoiding noise. Furthermore, the skeleton isolation portion 322 is provided to protrude relative to the skeleton main body portion 321, so that the interior of the skeleton isolation portion 322 forms an enclosing area, which is conducive to the bearing 23 and the support frame 11 extending into the enclosing area, so that the bearing 23 and the skeleton 32 intersect in the vertical direction, shortening the span of a pair of bearings 23 in the vertical direction, improving the rigidity of the rotor assembly, thereby improving the noise level of the motor device 1, improving the sound quality of the motor, and thus reducing the overall noise level of the machine.

[0048] exist Figures 3 to 5In the illustrated embodiment, the support frame 11 includes a support body 111 and a support fixing part 112 connected to the support body 111. The support fixing part 112 and the support body 111 are an integral structure. The support fixing part 112 is located on the side of the support body 111 facing the bearing 23, and protrudes in the axial direction Y of the rotating shaft 21 relative to the support fixing part 112, and is located on the periphery of the bearing 23. The support body 111 extends in the radial direction X (horizontal direction) of the rotating shaft 21 relative to the support fixing part 112, and the support fixing part 112 extends in the direction of the bearing 23 relative to the support body 111, which is beneficial for enclosing the bearing 23 to fix and protect the bearing 23, thus improving safety.

[0049] exist Figures 3 to 5 In the illustrated embodiment, the support fixing part 112 and the bearing 23 are located within the enclosing area, and there is a gap between the outer wall of the support fixing part 112 and the inner wall of the frame isolation part 322. This gap prevents interference between the outer wall of the support fixing part 112 and the inner wall of the frame isolation part 322 when the bearing 23 and the support frame 11 extend into the enclosing area. This arrangement ensures that the bearing 23 and the support frame 11 can extend into the enclosing area, shortens the vertical span of a pair of bearings 23, and avoids noise caused by insufficient clearance, thereby improving the rigidity of the rotor assembly and reducing noise.

[0050] exist Figures 3 to 5 In the illustrated embodiment, the support fixing part 112 includes a first fixing surface 113, a second fixing surface 114, and a third fixing surface 115. The third fixing surface 115 is smoothly connected to both the first fixing surface 113 and the second fixing surface 114. The connection between the third fixing surface 115 and the first fixing surface 113 is smoothly formed, and the connection between the third fixing surface 115 and the second fixing surface 114 is also smoothly formed. This smoothing can be a chamfered arc structure; the specific chamfer angle and smoothness are determined according to the actual process and are not limited in this application. Smoothness reduces manufacturing difficulty, thereby reducing cost and installation difficulty. The frame isolation part 322 includes a first isolation surface 323, a second isolation surface 324, and a third isolation surface 325. The third isolation surface 325 is smoothly connected to both the first isolation surface 323 and the second isolation surface 324. The connection between the third isolation surface 325 and the first isolation surface 323 is smoothly formed, and the connection between the third isolation surface 325 and the second isolation surface 324 is also smoothly formed. The smoothing feature can be a chamfered arc structure, and the specific chamfer angle and smoothness are determined according to the actual process, which is not limited in this application. The smoothing feature can reduce the difficulty of manufacturing, thereby reducing costs and installation difficulty.

[0051] exist Figures 3 to 5In the illustrated embodiment, there is a gap between the first fixing surface 113 and the first isolation surface 323, a gap between the second fixing surface 114 and the second isolation surface 324, and a gap between the third fixing surface 115 and the third isolation surface 325. By smoothly configuring the outer walls of the support fixing part 112 and the outer walls of the frame isolation part 322, and by providing gaps on opposite outer surfaces, installation difficulty can be reduced, collisions between opposite outer surfaces can be avoided, and noise generation can be reduced.

[0052] In some embodiments, the third fixing surface 115 is a plane or an arc surface. In this embodiment, the third fixing surface 115 can be a plane. In other embodiments, the third fixing surface 115 can be an arc surface, which can be concave or convex. In some embodiments, the third isolation surface 325 is a plane or an arc surface. In this embodiment, the third isolation surface 325 can be a plane. In other embodiments, the third isolation surface 325 can be an arc surface, which can be concave or convex. In this embodiment, the third isolation surface 325 is set as a plane, which simplifies the manufacturing process and makes installation easy. In this embodiment, both the third fixing surface 115 and the third isolation surface 325 are set as planes, which simplifies the manufacturing process and installation. While avoiding collisions, it reduces swaying during rotation, and improves motor vibration and noise.

[0053] exist Figures 3 to 5 In the illustrated embodiment, the third fixing surface 115 is inclined from bottom to top along the axial direction Y of the rotating shaft 21, moving away from the center of the shaft 21. The center of the rotating shaft 21 can be its central axis, extending vertically. This arrangement, making the third fixing surface 115 an inclined plane, simplifies the manufacturing process, facilitates installation, and reduces deflection and noise during rotation while avoiding collisions. Figures 3 to 5 In the illustrated embodiment, the third isolation surface 325 is inclined from bottom to top along the axial direction Y of the rotating shaft 21, moving away from the center of the rotating shaft 21. The center of the rotating shaft 21 can be its central axis, extending vertically. Setting the third isolation surface 325 as an inclined plane simplifies the manufacturing process and installation, reduces sway during rotation, and lowers noise while avoiding collisions.

[0054] exist Figures 3 to 5 In the illustrated embodiment, the minimum width of the first fixing surface 113 is not less than 0.3 mm. In this embodiment, the first fixing surface 113 is the smallest end of the supporting fixing part 112. Setting the width of the smallest end or narrowest point of the first fixing surface 113 to be equal to or greater than 0.3 mm ensures the strength and rigidity of the supporting fixing part 112, thereby improving stability. Figures 3 to 5In the illustrated embodiment, the minimum width of the second isolation surface 324 is not less than 0.3 mm. In this embodiment, the second isolation surface 324 is the smallest end of the skeleton isolation portion 322. Setting the width of the smallest end or narrowest part of the second isolation surface 324 to be equal to or greater than 0.3 mm ensures the strength and rigidity of the skeleton isolation portion 322, thereby improving stability.

[0055] exist Figures 3 to 5 In the illustrated embodiment, the minimum gap between the third fixing surface 115 and the third isolation surface 325 is not less than 0.3 mm. Regardless of whether the third fixing surface 115 and the third isolation surface 325 are planar or curved, setting the minimum gap between them to be equal to or greater than 0.3 mm ensures that the third fixing surface 115 and the third isolation surface 325 do not contact or interfere with each other. This not only reduces noise but also meets installation tolerances, improving safety and stability. Figures 3 to 5 In the illustrated embodiment, the minimum gap between the first fixing surface 113 and the first isolation surface 323 is not less than 0.3 mm. Regardless of whether the first fixing surface 113 and the first isolation surface 323 are planar or curved, setting the minimum gap between them to be equal to or greater than 0.3 mm ensures that the first fixing surface 113 and the first isolation surface 323 do not contact or interfere with each other. This not only reduces noise but also meets installation tolerances, improving safety and stability. Figures 3 to 5 In the illustrated embodiment, the minimum gap between the second fixing surface 114 and the second isolation surface 324 is not less than 0.3 mm. Regardless of whether the second fixing surface 114 and the second isolation surface 324 are flat or curved surfaces, setting the minimum gap between the second fixing surface 114 and the second isolation surface 324 to be equal to or greater than 0.3 mm ensures that the second fixing surface 114 and the second isolation surface 324 do not contact or interfere with each other. This not only reduces noise but also meets installation tolerances, improving safety and stability.

[0056] exist Figures 3 to 5 In the illustrated embodiment, a pair of bearings 23 and the magnetic element 22 have an installation gap along the axial Y direction of the rotating shaft 21. The pair of bearings 23 and the magnetic element 22 are mounted vertically, and the installation gap between them and the top and bottom of the magnetic element 22 facilitates installation and meets installation tolerances. Figures 3 to 5In the illustrated embodiment, the installation gap ranges from 0.2mm to 0.3mm. In some embodiments, the installation gap can be 0.2mm, 0.25mm, or 0.3mm. This setting satisfies installation tolerances and improves stability. In this embodiment, a pair of bearings 23 are coaxially mounted with the magnetic component 22. This arrangement ensures better stability and balance during rotation. In this embodiment, the magnetic component 22 includes a magnet 221 and a pair of magnetic rings 222 disposed at the top and bottom of the magnet 221. The pair of bearings 23 are assembled at the top and bottom of the pair of magnetic rings 222. The placement of a pair of magnetic rings 222 at both ends of the magnet 221 facilitates dynamic balance, making the rotation of the entire rotor assembly 20 more balanced and stable.

[0057] exist Figures 1 to 5 In the illustrated embodiment, a pair of support frames 11 includes a first support frame 12 and a second support frame 13 distributed along the axial direction Y of the rotating shaft 21. The first support frame 12 and the second support frame 13 are symmetrically arranged in the vertical direction, satisfying the double-cantilever structure of the high-speed motor. Both the first support frame 12 and the second support frame 13 are provided with multiple fixing holes 117, which extend along the axial direction Y of the rotating shaft 21. The motor device 1 also includes multiple fixing members 116, which pass through the fixing holes 117 and are respectively assembled with the first support frame 12 and the second support frame 13 along the axial direction Y of the rotating shaft 21. In this embodiment, the fixing member 116 can be a bolt, and the fixing hole 117 can be a threaded hole. By fixing the bolt with the thread of the threaded hole, the first support frame 12 and the second support frame 13 are fixed in the vertical direction, which provides good fixing stability. Moreover, this assembly method is simple and low in cost.

[0058] exist Figures 1 to 5 In the illustrated embodiment, the motor device 1 further includes a housing assembly 40, which includes a first housing 41 and a second housing 42. The first housing 41 and the second housing 42 are separate structures; the first housing 41 is assembled to the first support frame 12, and the second housing 42 is assembled to the second support frame 13. In this embodiment, the first housing 41 is assembled to the outside of the first support frame 12, and the first housing 41 protects the first support frame 12 and its internal components. The second housing 42 is assembled to the outside of the second support frame 13, and the first housing 41 protects the second support frame 13 and its internal components. In this embodiment, the housing assembly 40 is configured as a separate structure for ease of assembly.

[0059] exist Figures 1 to 5In the illustrated embodiment, the motor device 1 further includes a main control board 50 and multiple connection terminals 60, which are electrically connected to the electromagnetic coil 33 and the main control board 50, respectively. The main control board 50 is used to control the operation of the entire motor device 1. One end of each connection terminal 60 is electrically connected to the electromagnetic coil 33, and the other end is plugged into and electrically connected to the main control board 50. The connection between the electromagnetic coil 33 and the main control board 50 is achieved through the connection terminals 60, resulting in less wiring, easier assembly, and better connection stability, leading to a compact structure. Furthermore, the use of connection terminals 60 for electrical connection minimizes the need for waterproofing measures, reducing costs. In this embodiment, the main control board 50 is assembled on the inner side of the second support frame 13. The second support frame 13 protects the main control board 50, resulting in a simple structure and low cost.

[0060] exist Figures 1 to 5 In the illustrated embodiment, the motor device 1 further includes a moving impeller 43, disposed on the side of the first support frame 12 away from the bearing 23, and located within the housing assembly 40. The moving impeller 43 and the bearing 23 are located on opposite sides of the first support frame 12. One end of the rotating shaft 21 passes through the first support frame 12 and is connected to the moving impeller 43, while the other end of the rotating shaft 21 is fixed to the second support frame 13. The moving impeller 43 rotates synchronously with the rotating shaft 21, used to transmit and output the kinetic energy of the rotating shaft 21, resulting in a simple structure. Figures 1 to 5 In the illustrated embodiment, the first support frame 12 has an air guide channel communicating with the outside world on its periphery, and the motor device 1 also includes a fixed impeller 44, which is disposed within the air guide channel. Under the action of the moving impeller 43, the fixed impeller 44 facilitates the transmission of some of the energy within the housing assembly 40 through the air guide channel, thus helping to balance the kinetic energy.

[0061] This application also provides a cleaning device, which can be a vacuum cleaner, floor scrubber, robotic vacuum cleaner, carpet / fabric cleaner, etc., including those described above. Figures 1 to 5 The motor device 1 described in the embodiment. The cleaning equipment of this application is provided with the above-described motor device 1. Figures 1 to 5 The motor device 1 described in this embodiment achieves the shortest possible distance between the bearings 23 by selecting a pair of bearings 23 of specific dimensions and a pair of vertically arranged frames 32. Furthermore, the bearings 23 and their corresponding frames 32 are positioned to intersect horizontally. By extending the pair of bearings 23 and the support frame 11 into the frame 32 of the stator assembly 30, the distance between the bearings 23 is shortened. A smaller distance between the bearings 23 increases the rigidity of the rotor assembly 20, reduces sway during rotation, and improves motor vibration and noise. This double-cantilever structure arrangement, primarily targeting high-power, high-speed motors, minimizes the bearing span (span diameter), reducing motor vibration and noise. This noise reduction method is effective, easy to implement, low-cost, and enhances the user experience.

[0062] It should be understood that this application is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this application is limited only by the appended claims.

Claims

1. A motor device, characterized in that, include: A support assembly, including a pair of support frames; A rotor assembly is assembled on the support assembly; the rotor assembly includes a rotating shaft, a magnetic element disposed around the rotating shaft, and a pair of bearings disposed around the rotating shaft and located at the top and bottom of the magnetic element; wherein the pair of support frames are partially located around the pair of bearings; and A stator assembly is assembled on the support assembly, and the rotor assembly rotates relative to the stator assembly. The stator assembly includes a stator core, a pair of frames disposed at the top and bottom of the stator core, and an electromagnetic coil wound on the pair of frames. The stator core and the pair of frames are both located on the periphery of the magnetic component. The frames extend axially toward the bearing of the rotating shaft and enclose a containing area. The bearing and the support frame are partially located within the containing area, and the frames do not contact the support frame axially or radially with the rotating shaft.

2. The motor device according to claim 1, characterized in that, There is a gap between the side wall of the support frame facing the skeleton and the side wall of the skeleton facing the support frame.

3. The motor device according to claim 2, characterized in that, The frame includes a frame main body and a frame isolation part connected to the frame main body. The frame isolation part is located on the side of the frame main body facing the bearing and protrudes axially from the frame main body on the rotating shaft to form the containing area. The support frame includes a support main body and a support fixing part connected to the support main body. The support fixing part is located on the side of the support main body facing the bearing and protrudes axially from the support fixing part on the rotating shaft, and is located on the periphery of the bearing. The support fixing part and the bearing are located within the containing area, and there is a gap between the outer wall of the support fixing part and the inner wall of the frame isolation part.

4. The motor device according to claim 3, characterized in that, The supporting fixing part includes a first fixing surface, a second fixing surface, and a third fixing surface, wherein the third fixing surface is smoothly connected to the first fixing surface and the second fixing surface, respectively; the skeleton isolation part includes a first isolation surface, a second isolation surface, and a third isolation surface, wherein the third isolation surface is smoothly connected to the first isolation surface and the second isolation surface, respectively; wherein there is a gap between the first fixing surface and the first isolation surface, a gap between the second fixing surface and the second isolation surface, and a gap between the third fixing surface and the third isolation surface.

5. The motor device according to claim 4, characterized in that, The third fixing surface is inclined from bottom to top, along the axial direction of the rotating shaft, from the center of the rotating shaft away from the center; and / or The third isolation surface is inclined from bottom to top and along the axial direction of the rotating shaft from the center of the rotating shaft away from the center.

6. The motor device according to claim 5, characterized in that, The minimum width of the first fixing surface is not less than 0.3 mm; and / or The minimum width of the second isolation surface is not less than 0.3 mm.

7. The motor device according to claim 4, characterized in that, The minimum gap between the third fixing surface and the third isolation surface shall not be less than 0.3 mm; and / or The minimum gap between the first fixing surface and the first isolation surface is not less than 0.3 mm; and / or The minimum gap between the second fixing surface and the second isolation surface is not less than 0.3 mm; and / or The third fixing surface is a plane or an arc surface; and / or The third isolation surface is either a plane or an arc surface.

8. The motor device according to claim 1, characterized in that, The pair of bearings and the magnetic component have an installation gap in the axial direction of the rotating shaft; The size range of the installation gap is 0.2mm to 0.3mm; and / or The pair of bearings are coaxially mounted with the magnetic component.

9. The motor device according to claim 1, characterized in that, The pair of support frames includes a first support frame and a second support frame distributed axially along the shaft. Both the first support frame and the second support frame are provided with multiple fixing holes, which extend axially along the rotating shaft; the motor device also includes multiple fixing members, which pass through the fixing holes and are respectively assembled with the first support frame and the second support frame axially along the rotating shaft; and / or The motor device further includes a housing assembly, which includes a first housing and a second housing. The first housing is assembled on the first support frame, and the second housing is assembled on the second support frame. The motor device also includes a main control board and a plurality of connection terminals, which are electrically connected to the electromagnetic coil and the main control board, respectively. The main control board is assembled on the second support frame. The motor assembly further includes a moving impeller disposed on the side of the first support frame away from the bearing and located within the housing assembly. One end of the rotating shaft passes through the first support frame and is connected to the moving impeller, while the other end of the rotating shaft is fixed to the second support frame; and / or The first support frame has an air guide channel that communicates with the outside world on its periphery, and the motor device also includes a fixed impeller, which is located in the air guide channel.

10. A cleaning device, characterized in that, include: The motor device as described in any one of claims 1 to 9.

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