Cleaning device

Abstract

The invention discloses cleaning equipment. The cleaning equipment comprises a motor; the speed reducing mechanism comprises an input shaft, a first rotor, a second rotor, a stator and an output shaft, one end of the input shaft is connected with the motor, the first rotor and the input shaft are coaxially fixed, the second rotor is arranged on the radial outer side of the first rotor, and the stator sleeves the radial outer side of the first rotor; the stator is suitable for generating a magnetic field acting on the first rotor and the second rotor, the first rotor can drive the second rotor or the stator to rotate under the magnetic field effect of the stator, and one end of the output shaft is connected with the second rotor or the stator; and the floor brush is connected to the other end of the output shaft. According to the cleaning equipment, the speed reduction mechanism is arranged, the first rotor of the speed reduction mechanism drives the second rotor or the stator to rotate at a low speed through the magnetic field generated by the stator, rotation of the motor is transmitted to the ground brush after speed reduction and torque increase, and therefore the working process of the cleaning equipment is quieter, and transmission loss can be reduced.

Description

Technical Field

[0001] The invention relates to the technical field of household appliances, in particular to a cleaning device. Background Art

[0002] The existing cleaning equipment on the market, such as vacuum cleaners and floor scrubbers, basically use motors matched with mechanical reducers to drive floor brushes. Mechanical reducers will generate large noise when internal parts come into contact during transmission, which will make the cleaning equipment too noisy during operation, thereby reducing the user experience. In addition, the mechanical loss of mechanical contact transmission is large. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention is to provide a cleaning device that is quieter when working.

[0004] According to the cleaning device of the present invention, it includes: a motor; a reduction mechanism, the reduction mechanism includes an input shaft, a first rotor, a second rotor, a stator and an output shaft, one end of the input shaft is connected to the motor, the first rotor is coaxially fixed to the input shaft, the second rotor is arranged on the radial outside of the first rotor, the stator is arranged on the radial outside of the first rotor, the stator is suitable for generating a magnetic field acting on the first rotor and the second rotor, and under the action of the magnetic field of the stator, the first rotor can drive the second rotor or the stator to rotate, one end of the output shaft is connected to the second rotor or the stator; a floor brush, and the floor brush is connected to the other end of the output shaft.

[0005] According to the cleaning device of the present invention, a deceleration mechanism is provided, and the first rotor of the deceleration structure drives the second rotor or the stator to rotate at a low speed through the magnetic field generated by the stator, thereby reducing the rotation speed of the motor and increasing the torque before transmitting it to the floor brush, thereby making the working process of the cleaning device quieter and reducing transmission losses.

[0006] According to some embodiments of the present invention, the first rotor includes: a rotor body and first rotor teeth, the rotor body is columnar and is sleeved on the radial outside of the input shaft, the first rotor teeth are arranged on the outer surface of the rotor body and extend from one axial end to the other end of the rotor body, and the first rotor teeth include a plurality of first rotor teeth, and the plurality of first rotor teeth are evenly spaced along the circumference of the rotor body.

[0007] According to some embodiments of the present invention, the second rotor includes: a rotor core, the rotor core having a plurality of second rotor teeth, the plurality of second rotor teeth being arranged at intervals along the circumference of the first rotor, and the number of the second rotor teeth being greater than the number of the first rotor teeth; and a rotor bracket, the rotor core being fixed on the rotor bracket, and one end of the output shaft being fixedly connected to the rotor bracket.

[0008] According to some embodiments of the present invention, the rotor support includes a first end cover and a support rod, the first end cover is arranged perpendicular to the axis of the first rotor and is located at one end of the first rotor in the axial direction, the support rod is multiple, one end of the multiple support rods is connected to the circumference of the first end cover, the other end of the multiple support rods extends toward the other end of the first rotor in the axial direction, and the support rod is arranged between two adjacent second rotor teeth.

[0009] According to some embodiments of the present invention, the second rotor further comprises: a rotor end cover, wherein the rotor end cover is connected to the rotor support and is located at the other end of the first rotor in the axial direction.

[0010] According to some embodiments of the present invention, a first bearing is disposed on the first end cover, a second bearing is disposed on the rotor end cover, and both ends of the input shaft are supported by the first bearing and the second bearing, respectively.

[0011] According to some embodiments of the present invention, a first groove is provided on a side of the first end cover facing the first rotor, and the first bearing is arranged in the first groove; a second groove is provided on a side of the rotor end cover facing the first rotor, and the second bearing is arranged in the second groove.

[0012] According to some embodiments of the present invention, the cleaning device further includes: a base, the base is arranged between the motor and the reduction mechanism, the base is provided with a third groove, a third bearing is provided in the third groove, the rotor end cover has a boss protruding toward the motor, and the third bearing is sleeved on the outer surface of the boss.

[0013] According to some embodiments of the present invention, the stator includes a stator core and a magnetic component, the stator core is arranged on the radially outer side of the second rotor, the stator core has a plurality of stator slots, the plurality of stator slots are arranged at intervals along the circumference of the stator core, the magnetic component is arranged in the stator slots, and the magnetic component is a stator magnet or a stator winding.

[0014] According to some embodiments of the present invention, the cleaning device further includes: a shell, the inner side of the shell defines a accommodating cavity, and the first rotor, the second rotor and the stator are all arranged in the accommodating cavity.

[0015] According to some embodiments of the present invention, the side of the accommodating cavity facing the motor is open, and the cleaning device further comprises: a second end cover, and the second end cover is arranged on the open side of the accommodating cavity.

[0016] According to some embodiments of the present invention, a fourth groove is formed on the inner wall of the accommodating cavity, the shell is formed with a through hole penetrating the bottom wall of the fourth groove, a fourth bearing is provided in the fourth groove, the output shaft is supported by the fourth bearing, one end of the output shaft is connected to the second rotor, and the other end passes through the through hole and extends out of the shell.

[0017] According to some embodiments of the present invention, the input shaft is connected to the motor shaft of the motor via a coupling.

[0018] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic diagram of a cleaning device according to an embodiment of the present invention;

[0020] Figure 2 yes Figure 1 An exploded view of the cleaning apparatus shown in;

[0021] Figure 3 is a cross-sectional view of a cleaning device according to an embodiment of the present invention;

[0022] Figure 4 yes Figure 3 A schematic diagram of a first rotor, a second rotor and a stator shown in ;

[0023] Figure 5 yes Figure 4 A schematic diagram of a stator shown in ;

[0024] Figure 6 yes Figure 4 A schematic diagram of a rotor core shown in FIG.

[0025] Figure 7 yes Figure 4 A schematic diagram of the rotor support shown in ;

[0026] Figure 8 yes Figure 4 A schematic diagram of a first rotor shown in ;

[0027] Fig. 9 yes Figure 2 A schematic diagram of a rotor end cover shown in ;

[0028] Fig.10 yes Figure 2A schematic diagram of the base shown in ;

[0029] Fig.11 yes Figure 4 A magnetic field distribution diagram of the first rotor, the second rotor and the stator shown in ;

[0030] Fig.12 yes Fig.11 Another magnetic field distribution diagram of the first rotor, the second rotor and the stator shown in ;

[0031] Fig.13 yes Fig.12 Another magnetic field distribution diagram of the first rotor, the second rotor and the stator shown in .

[0032] Reference numerals:

[0033] 100. Cleaning equipment;

[0034] 10. Motor;

[0035] 20. Speed ​​reduction mechanism; 21. Input shaft; 22. First rotor; 221. Rotor body; 222. First rotor tooth; 23. Second rotor; 231. Rotor core; 2311. Second rotor tooth; 232. Rotor bracket; 2321. First end cover; 23211. First bearing; 2322. Bracket rod; 233. Rotor end cover; 2331. Second bearing; 2332. Boss; 2333. Mounting groove; 24. Stator; 241. Stator core; 242. Magnetic member; 25. Output shaft;

[0036] 30. base; 31. third bearing;

[0037] 40. housing; 41. accommodating chamber; 42. fourth bearing;

[0038] 50. second end cover;

[0039] 60. Coupling;

[0040] 70. Retaining ring. DETAILED DESCRIPTION

[0041] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0042] Reference below Figure 1-Figure 13 A cleaning device 100 according to an embodiment of the present invention is described.

[0043] like Figure 1-Figure 4As shown, a cleaning device 100 according to an embodiment of the present invention includes: a motor 10, a speed reduction mechanism 20 and a floor brush.

[0044] Specifically, the reduction mechanism 20 includes an input shaft 21, a first rotor 22, a second rotor 23, a stator 24 and an output shaft 25. One end of the input shaft 21 is connected to the motor 10, the first rotor 22 is coaxially fixed to the input shaft 21, the second rotor 23 is arranged on the radial outer side of the first rotor 22, and the stator 24 is sleeved on the radial outer side of the first rotor 22. The stator 24 is suitable for generating a magnetic field acting on the first rotor 22 and the second rotor 23, and under the action of the magnetic field of the stator 24, the first rotor 22 can drive the second rotor 23 or the stator 24 to rotate. One end of the output shaft 25 is connected to the second rotor 23 or the stator 24, and a ground brush is connected to the other end of the output shaft 25.

[0045] That is, the first rotor 22 may drive the second rotor 23 to rotate, and one end of the output shaft 25 may be connected to the second rotor 23 , or the first rotor 22 may drive the stator 24 to rotate, and one end of the output shaft 25 may be connected to the stator 24 .

[0046] Among them, the motor 10 is used to provide the power required for the cleaning device 100 to realize the cleaning function, and the reduction mechanism 20 is used to convert the high-speed, low-torque rotation input by the motor 10 into a low-speed, high-torque rotation transmitted to the floor brush, and the floor brush is used to realize the cleaning function of the cleaning device 100.

[0047] It should be noted that the cleaning device 100 may be a floor scrubber, a floor sweeper or a vacuum cleaner. When the cleaning device 100 is working, the motor 10 drives the floor brush to rotate on the ground, thereby cleaning the ground. In order to ensure the cleaning effect, the part of the floor brush that contacts the ground will be made rougher, so that the floor brush contacts the ground more fully, which will increase the friction between the floor brush and the ground, and thus, a larger torque is required to drive the floor brush to rotate.

[0048] At the same time, since the working characteristics of the motor 10 are: the higher the output speed, the lower the output torque, if the motor 10 is directly connected to the floor brush, the torque output by the motor 10 is often not enough to drive the floor brush to work normally. Therefore, it is necessary to set a reduction mechanism 20 between the motor 10 and the floor brush so that the high-speed, low-torque rotation output by the motor 10 is converted into a low-speed, high-torque rotation and transmitted to the floor brush.

[0049] In the prior art, the motor 10 and the floor brush are connected via a mechanical reduction mechanism 20. When the mechanical reduction mechanism 20 is transmitting, noise is generated when mechanical parts come into contact with each other, which reduces the user experience. In addition, the friction between the parts during transmission causes energy loss.

[0050] In this embodiment, the motor 10 drives the first rotor 22 of the reduction mechanism 20 to rotate through the input shaft 21, and the first rotor 22 drives the second rotor 23 or the stator 24 to rotate through the magnetic field generated by the stator 24. The rotation speed of the second rotor 23 or the stator 24 is lower than that of the first rotor 22. The second rotor 23 or the stator 24 outputs the decelerated rotation to the floor brush through the output shaft 25. Therefore, the reduction mechanism 20 can realize the deceleration and torque increase of the rotation input by the motor 10 and then transmit it to the floor brush. At the same time, there is no contact between the first rotor 22, the second rotor 23 and the stator 24. In this way, the transmission process of the reduction mechanism 20 can be made quieter, and the transmission loss between the first rotor 22 and the second rotor 23 or the stator 24 can be reduced, thereby reducing the wear of the first rotor 22, the second rotor 23 and the stator 24.

[0051] According to the cleaning device 100 of the embodiment of the present invention, a reduction mechanism 20 is provided, and the first rotor 22 of the reduction structure drives the second rotor 23 or the stator 24 to rotate at a low speed through the magnetic field generated by the stator 24, so as to reduce the rotation speed of the motor 10 and increase the torque before transmitting it to the floor brush. In this way, the transmission process of the reduction mechanism 20 is quieter, so that the working process of the cleaning device 100 is quieter, thereby improving the customer's usage experience, and can reduce transmission losses, thereby improving transmission efficiency. In addition, it can also reduce the wear of components, thereby improving the service life of the cleaning device 100.

[0052] In some embodiments of the present invention, Figure 4 and Figure 8 As shown, the first rotor 22 includes: a rotor body 221 and first rotor teeth 222. The rotor body 221 is columnar and is sleeved on the radial outer side of the input shaft 21. The first rotor teeth 222 are arranged on the outer surface of the rotor body 221 and extend from one axial end to the other end of the rotor body 221. The first rotor teeth 222 include a plurality of first rotor teeth 222, and the plurality of first rotor teeth 222 are evenly spaced along the circumference of the rotor body 221. For example, the first rotor teeth 222 can be two, three or four.

[0053] When the reduction mechanism 20 is assembled, the first rotor 22 is located in the magnetic field generated by the stator 24, and the magnetic resistance of the path from the stator 24 to the first rotor tooth 222 and the surface directly opposite to the stator 24 is the smallest. In this way, the magnetic lines of force emitted from the stator 24 enter the first rotor tooth 222 from the surface directly opposite to the stator 24. When the first rotor 22 rotates, the magnetic lines of force between the stator 24 and the first rotor tooth 222 also rotate accordingly.

[0054] In some embodiments of the present invention, Figure 4 , Figure 6 and Figure 7As shown, the second rotor 23 includes: a rotor core 231 and a rotor bracket 232. Specifically, the rotor core 231 has a plurality of second rotor teeth 2311, and the plurality of second rotor teeth 2311 are arranged at intervals along the circumference of the first rotor 22. For example, the number of the second rotor teeth 2311 may be two, three or four, and the number of the second rotor teeth 2311 is greater than the number of the first rotor teeth 222. The rotor core 231 is fixed to the rotor bracket 232, and one end of the output shaft 25 is fixedly connected to the rotor bracket 232. In other words, the first rotor 22 drives the second rotor 23 to rotate, decelerates the rotation input by the motor 10, increases the torque, and then outputs it. At this time, the stator 24 is in a fixed state.

[0055] During the operation of the reduction mechanism 20, the motor 10 drives the first rotor 22 to rotate, and the magnetic lines of force between the stator 24 and the first rotor teeth 222 also rotate accordingly. The second rotor teeth 2311 will rotate following the magnetic lines of force so that the axis of the second rotor teeth 2311 coincides with the axis of the magnetic lines of force, thereby causing the second rotor 23 to rotate, thereby realizing the rotation transmission of the first rotor 22 to the second rotor 23.

[0056] At the same time, the number of the second rotor teeth 2311 is greater than the number of the first rotor teeth 222. In the process from the beginning of coupling between the first rotor teeth 222 and the second rotor teeth 2311 to the end of coupling between the first rotor teeth 222 and the second rotor teeth 2311, the rotation angle of the first rotor teeth 222 will be greater than the rotation angle of the second rotor teeth 2311. In this way, the rotation speed of the second rotor teeth 2311 will be lower than the rotation speed of the first rotor teeth 222, that is, the rotation speed of the second rotor 23 is lower than the rotation speed of the first rotor 22. The rotor bracket 232 rotates under the drive of the second rotor 23, and the output shaft 25 rotates under the drive of the rotor bracket 232. Therefore, the reduction mechanism 20 realizes the deceleration and torque increase of the input rotation of the motor 10 and then outputs it.

[0057] In some embodiments of the present invention, one end of the output shaft 25 is fixedly connected to the stator 24, and at this time, the second rotor 23 is in a fixed state. In this way, when the motor 10 drives the first rotor 22 to rotate, the second rotor teeth 2311 will apply the force of the magnetic lines of force to the stator 24 to rotate the stator 24, thereby realizing the transmission of the rotation on the first rotor 22 to the stator 24, and then outputting the rotation through the output shaft 25 connected to the stator 24.

[0058] In some embodiments of the present invention, the first rotor 22 is made of magnetic silicon steel, and the second rotor 23 is made of magnetic silicon steel. Magnetic silicon steel has good magnetic conductivity and poor performance in generating induced current in a magnetic field, thereby improving the transmission efficiency of the speed reduction mechanism 20 and reducing transmission losses.

[0059] In some embodiments of the present invention, Figure 3 and Figure 7As shown, the rotor support 232 includes a first end cover 2321 and a support rod 2322. The first end cover 2321 is arranged perpendicular to the axis of the first rotor 22 and is located at one end of the first rotor 22 in the axial direction (for example Figure 3 By setting a first end cover 2321, the first end cover 2321 can provide support for one end of the first rotor 22 in the axial direction of the support rod 2322, and the first end cover 2321 can provide protection for the components in the rotor support 232, thereby reducing the probability of the components in the rotor support 232 being damaged by the external environment.

[0060] There are multiple support rods 2322, for example, there can be two, three or four support rods 2322, one end of the multiple support rods 2322 is connected to the circumference of the first end cover 2321, and the other ends of the multiple support rods 2322 extend toward the other end of the first rotor 22 in the axial direction. The support rod 2322 is arranged between two adjacent second rotor teeth 2311. In this way, the number of contact surfaces between the rotor core 231 and the rotor support 232 can be increased, so that the installation of the rotor core 231 on the rotor support 232 can be more stable.

[0061] In some embodiments of the present invention, Figure 3 and Fig. 9 As shown, the second rotor 23 further includes a rotor end cover 233, which is connected to the rotor support 232 and is located at the other end of the first rotor 22 in the axial direction (for example Figure 3 By providing the rotor end cover 233, the rotor end cover 233 can provide support for the other end of the support rod 2322 of the first rotor 22 in the axial direction. In this way, both ends of the support rod 2322 are supported, and the rotation of the rotor support 232 is more stable, thereby making the rotation of the output shaft 25 more stable. In addition, the rotor end cover 233 can also provide protection for the components in the rotor support 232, reducing the probability of the components in the rotor support 232 being damaged by the external environment.

[0062] In some embodiments of the present invention, Fig. 9 As shown, a plurality of mounting grooves 2333 are provided on one side of the rotor end cover 233 facing the rotor bracket 232, and the number of the mounting grooves 2333 corresponds to the bracket rod 2322 one by one. The bracket rod 2322 extends into the mounting groove 2333 and is connected to the rotor end cover 233. In this way, each mounting groove 2333 can limit the displacement of the bracket rod 2322. When the rotor bracket 232 rotates, the inner wall of the mounting groove 2333 can resist the bracket rod 2322 to prevent the rotor bracket 232 from being displaced relative to the rotor end cover 233, thereby further improving the stability of the rotation of the second rotor 23, and then improving the stability of the rotation of the output shaft 25.

[0063] In some embodiments of the present invention, the axial length of the second rotor 23 is greater than the outer diameter of the second rotor 23 , so that the radial size of the reduction mechanism 20 can be reduced, thereby facilitating the arrangement of the reduction mechanism 20 on the cleaning device 100 .

[0064] In some embodiments of the present invention, Figure 3 As shown, a first bearing 23211 is provided on the first end cover 2321, a second bearing 2331 is provided on the rotor end cover 233, and both ends of the input shaft 21 are respectively supported by the first bearing 23211 and the second bearing 2331. In this way, both ends of the input shaft 21 are supported, the rotation of the input shaft 21 is more stable, and the rotation of the first rotor 22 driven by the input shaft 21 is also more stable, thereby further improving the stability of the rotation of the output shaft 25.

[0065] In some embodiments of the present invention, the input shaft 21 has an interference fit with the first bearing 23211, and the input shaft 21 has an interference fit with the second bearing 2331. In this way, the reliability of the connection between the first bearing 23211 and the second bearing 2331 during the rotation of the input shaft 21 can be ensured, and the assembly of the first bearing 23211 and the second bearing 2331 on the input shaft 21 is more convenient.

[0066] In some embodiments of the present invention, Figure 3 As shown, the first end cover 2321 faces the first rotor 22 (eg Figure 3 The first end cover 2321 shown in FIG. 2 is provided with a first groove, and the first bearing 23211 is provided in the first groove. The side of the rotor end cover 233 facing the first rotor 22 (for example Figure 3 A second groove is provided on the right side of the rotor end cover 233 shown in FIG. 2 , and the second bearing 2331 is provided in the second groove. The first groove can limit the displacement of the first bearing 23211 relative to the first end cover 2321, so that the first bearing 23211 is fixed on the first end cover 2321. Similarly, the second groove can limit the displacement of the second bearing 2331 relative to the rotor end cover 233, so that the second bearing 2331 is fixed on the rotor end cover 233.

[0067] In some embodiments of the present invention, Figure 3 and Fig.10As shown, the cleaning device 100 further includes: a base 30, the base 30 is arranged between the motor 10 and the reduction mechanism 20, a third groove is arranged on the base 30, a third bearing 31 is arranged in the third groove, the rotor end cover 233 has a boss 2332 protruding toward the motor 10, and the third bearing 31 is sleeved on the outer surface of the boss 2332. By providing the base 30, the base 30 can realize the connection between one end of the motor 10 and the reduction mechanism 20, and the base 30 can separate the motor 10 shaft and the input shaft 21 from the external environment, thereby reducing the probability of the motor 10 shaft and the input shaft 21 being damaged by the external environment, and the third bearing 31 is sleeved on the outer surface of the boss 2332, so that the end of the second rotor 23 provided with the boss 2332 can rotate, and at the same time, the third bearing 31 can provide support for the end of the second rotor 23 provided with the boss 2332.

[0068] In some embodiments of the present invention, Figure 4 and Figure 5 As shown, the stator 24 includes a stator 24 core and a magnetic member 242. The stator 24 core is sleeved on the radially outer side of the second rotor 23. The stator 24 core has a plurality of stator 24 slots, which are arranged at intervals along the circumferential direction of the stator 24 core. The magnetic member 242 is arranged in the stator 24 slots, and the magnetic member 242 is a stator 24 magnet or a stator 24 winding. By arranging the stator 24 core, the stator 24 core provides an arrangement space for the magnetic member 242. By arranging the magnetic member 242, the magnetic member 242 can generate a magnetic field, so that the first rotor 22 can drive the second rotor 23 or the stator 24 to rotate through the magnetic field force, thereby realizing the function of reducing speed and increasing torque of the reduction mechanism 20.

[0069] Among them, when the magnetic part 242 is a stator 24 magnet, the component structure of the stator 24 can be simplified, thereby reducing the difficulty of assembling the stator 24 and improving the assembly efficiency of the stator 24. Further, the assembly efficiency of the cleaning equipment 100 is improved. When the magnetic part 242 is a stator 24 winding, the production cost of the stator 24 can be reduced, thereby reducing the production cost of the cleaning equipment 100.

[0070] In some embodiments of the present invention, Figure 2 and Figure 3 As shown, the cleaning device 100 further includes: a housing 40, the inner side of which defines an accommodating chamber 41, and the first rotor 22, the second rotor 23, and the stator 24 are all disposed in the accommodating chamber 41. The housing 40 can provide protection for the first rotor 22, the second rotor 23, and the stator 24, reduce the probability of the first rotor 22, the second rotor 23, and the stator 24 being damaged by the external environment, and at the same time, the housing 40 can also provide support for the first rotor 22, the second rotor 23, and the stator 24.

[0071] In some embodiments of the present invention, Figure 2 and Figure 3 As shown, the side of the accommodating cavity 41 facing the motor 10 (eg Figure 3 The cleaning device 100 is open (the left side of the accommodating chamber 41 shown in the figure), and the cleaning device 100 further includes: a second end cover 50, which is arranged on the open side of the accommodating chamber 41. In this way, the second end cover 50 can provide protection for the components in the accommodating chamber 41, and reduce the probability that the components in the accommodating chamber 41 are damaged by the external environment. At the same time, the second end cover 50 can also provide support for the shell 40, increase the pressure resistance of the shell 40, and reduce the probability that the external pressure crushes the shell 40, thereby improving the reliability of the cleaning device 100 during use.

[0072] In some embodiments of the present invention, Figure 2 and Figure 3 As shown, the cleaning device 100 also includes: a retaining ring 70, which abuts between the second end cover 50 and the stator 24, so that the retaining ring 70 can fill the gap between the second end cover 50 and the stator 24, and the stator 24 will be resisted by the retaining ring 70 when it moves toward the second end cover 50, thereby making the stator 24 more stable, and thus making the structure of the cleaning device 100 more stable.

[0073] In some embodiments of the present invention, Figure 3 As shown, a fourth groove is formed on the inner wall of the accommodating cavity 41, a through hole penetrating the bottom wall of the fourth groove is formed on the housing 40, a fourth bearing 42 is arranged in the fourth groove, the output shaft 25 is supported by the fourth bearing 42, one end of the output shaft 25 is connected to the second rotor 23, and the other end passes through the through hole and extends out of the housing 40. In this way, the end of the second rotor 23 connected to the output shaft 25 can rotate, and at the same time, the fourth bearing 42 can provide support for the output shaft 25.

[0074] Therefore, one end of the second rotor 23 is connected to the third bearing 31 through the boss 2332, and the other end of the second rotor 23 is connected to the fourth bearing 42 through the output shaft 25. In this way, the rotation of the second rotor 23 can be achieved, and the third bearing 31 and the fourth bearing 42 connected at both ends of the second rotor 23 can provide support for the second rotor 23, thereby making the rotation of the second rotor 23 more stable, and further improving the stability of the rotation of the output shaft 25.

[0075] In some embodiments of the present invention, the boss 2332 is interference fit with the third bearing 31, and the output shaft 25 is interference fit with the fourth bearing 42. In this way, the reliability of the connection between the boss 2332 and the third bearing 31 and the connection between the output shaft 25 and the fourth bearing 42 can be ensured during the rotation of the second rotor 23, and the assembly of the third bearing 31 and the boss 2332 and the assembly of the output shaft 25 and the fourth bearing 42 is more convenient.

[0076] In some embodiments of the present invention, Figure 3 As shown, the input shaft 21 is connected to the motor 10 shaft of the motor 10 through a coupling 60. The coupling 60 has a strong ability to withstand eccentricity and can reduce vibration and noise. Connecting the input shaft 21 and the motor 10 shaft through the coupling 60 can reduce the difficulty of assembly and reduce noise during the working process, thereby improving the production efficiency of the cleaning device 100 and improving the quiet performance of the cleaning device 100.

[0077] Reference below Figure 1-Figure 13 A specific embodiment of a cleaning device 100 according to the present invention is described.

[0078] The cleaning device 100 according to the embodiment of the present invention includes: a motor 10 , a speed reduction mechanism 20 , a floor brush, a base 30 , a housing 40 , a coupling 60 and a retaining ring 70 .

[0079] Among them, the reduction mechanism 20 includes an input shaft 21, a first rotor 22, a second rotor 23, a stator 24 and an output shaft 25. The first rotor 22 includes a rotor body 221 and a first rotor tooth 222. The second rotor 23 includes a rotor core 231, a rotor bracket 232 and a rotor end cover 233. The output shaft 25 is connected to the rotor bracket 232. The rotor bracket 232 includes a bracket rod 2322 and a first end cover 2321. The first end cover 2321 is provided with a first bearing 23211. The rotor end cover 233 is provided with a second bearing 2331. The stator 24 includes a stator 24 core and a magnetic member 242. The base 30 is provided with a third bearing 31. The housing 40 is provided with a accommodating cavity 41. The housing 40 is provided with a fourth bearing 42.

[0080] like Figure 3 As shown, when the cleaning device 100 according to an embodiment of the present invention is assembled:

[0081] In the first step, the first rotor 22 and the second rotor 23 are assembled.

[0082] First, the first rotor 22 is sleeved on the input shaft 21 so that the first rotor 22 is exposed at both ends of the input shaft 21 . Then, the first bearing 23211 is sleeved on the right end of the input shaft 21 , and the second bearing 2331 is sleeved on the left end of the input shaft 21 .

[0083] Then, the rotor core 231 is assembled to the rotor bracket 232. At this time, the output shaft 25 is connected to the right side of the first end cover 2321 of the rotor bracket 232. Then, the assembled first rotor 22 and input shaft 21 are extended into the second rotor 23, and the first bearing 23211 is installed in the first groove of the first end cover 2321. Then, the rotor end cover 233 is sealed on the left end of the second rotor 23, and the input shaft 21 is extended out of the rotor end cover 233. The first bearing 23211 is installed in the second groove of the rotor end cover 233, thereby completing the assembly of the first rotor 22 and the second rotor 23.

[0084] In the second step, the assembled first rotor 22 and second rotor 23 are assembled with the stator 24 .

[0085] First, install the fourth bearing 42 into the fourth groove of the housing 40, then install the stator 24 core installed with the magnetic part 242 into the accommodating cavity 41 of the housing 40, and then sleeve the fourth bearing 42 on the output shaft 25, and the assembled first rotor 22 and second rotor 23 are extended into the stator 24, and the output shaft 25 is extended out of the housing 40, and the fourth bearing 42 is installed in the fourth groove, and then use the second end cover 50 to cover the accommodating cavity 41 and make the end cover abut between the second end cover 50 and the stator 24, thereby completing the assembly of the reduction mechanism 20.

[0086] The third step is to connect the speed reduction mechanism 20 to the motor 10 .

[0087] First, sleeve the coupling 60 on the motor 10 shaft of the motor 10, then connect the base 30 to the motor 10 and make the motor 10 shaft extend into the base 30, then sleeve the third bearing 31 on the boss 2332 of the rotor end cover 233, extend the rotor end cover 233 into the base 30 and install the third bearing 31 in the third groove, and extend the left end of the input shaft 21 into the coupling 60 so that the input shaft 21 and the motor 10 shaft are connected together through the coupling 60, thereby completing the assembly of the motor 10 and the reduction mechanism 20.

[0088] After completing the above steps, the floor brush is connected to the output shaft 25, thereby completing the assembly of the cleaning device 100.

[0089] The transmission process of the cleaning device 100 when it is working will be described below.

[0090] When the cleaning device 100 is working, the motor 10 drives the input shaft 21 to rotate through the motor 10 shaft to input the rotation into the reduction mechanism 20, the input shaft 21 drives the first rotor 22 to rotate, the first rotor 22 drives the second rotor 23 to rotate through the magnetic field force, and then transmits the rotation to the floor brush through the output shaft 25, thereby driving the floor brush to work.

[0091] The transmission process in the speed reduction mechanism 20 is as follows:

[0092] When the first rotor teeth 222 of the first rotor 22 rotate to Fig.11In the position shown, the first rotor tooth 222A is fully coupled with the second rotor teeth 2311B, C and D, and the magnetic lines of force extend from the magnetic member 242 through the second rotor teeth 2311B, C and D to the first rotor tooth 222A, and then from the first rotor tooth 222A through the second rotor teeth 2311B, C and D back to the magnetic member 242 to close the magnetic lines of force. At this time, driven by the magnetic lines of force, the second rotor teeth 2311B, C and D will rotate with the first rotor tooth 222A, and at the same time, the rotation speed of the first rotor tooth 222A is greater than the rotation speed of the second rotor teeth 2311B, C and D.

[0093] When the first rotor tooth 222A rotates to Fig.12 When the position is shown, the coupling area between the first rotor tooth 222A and the second rotor tooth 2311B gradually decreases, and at the same time, the first rotor tooth 222A begins to couple with the second rotor tooth 2311E. At this time, the second rotor tooth 2311E begins to rotate under the action of the magnetic lines of force, and as the coupling area between the first rotor tooth 222A and the second rotor tooth 2311E gradually increases, the action of the magnetic lines of force also gradually increases.

[0094] When the first rotor tooth 222A rotates to Fig.13 In the position shown, the first rotor tooth 222A and the second rotor tooth 2311B are no longer coupled. At the same time, the first rotor tooth 222A and the second rotor tooth 2311E are completely coupled. At this time, the force of the magnetic lines of force on the second rotor tooth 2311E is the largest, and the second rotor teeth 2311C, D and E drive the second rotor 23 to rotate under the action of the magnetic lines of force.

[0095] Therefore, the first rotor teeth 222 are coupled with the second rotor teeth 2311 in sequence during the rotation process, and the above process is repeated, so that the first rotor 22 drives the second rotor 23 to rotate.

[0096] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0097] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0098] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0099] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0100] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A cleaning device, characterized in that: include: Motor; A speed reduction mechanism, the speed reduction mechanism comprising an input shaft, a first rotor, a second rotor, a stator and an output shaft, one end of the input shaft is connected to the motor, the first rotor is coaxially fixed to the input shaft, the second rotor is arranged on the radial outer side of the first rotor, the stator is sleeved on the radial outer side of the first rotor, the stator is suitable for generating a magnetic field acting on the first rotor and the second rotor, and under the action of the magnetic field of the stator, the first rotor can drive the second rotor or the stator to rotate, and one end of the output shaft is connected to the second rotor or the stator; A floor brush is connected to the other end of the output shaft.

2. The cleaning device according to claim 1, characterized in that The first rotor includes: a rotor body and first rotor teeth. The rotor body is columnar and is sleeved on the radially outer side of the input shaft. The first rotor teeth are arranged on the outer surface of the rotor body and extend from one axial end to the other end of the rotor body. The first rotor teeth include a plurality of first rotor teeth, and the plurality of first rotor teeth are evenly spaced along the circumference of the rotor body.

3. The cleaning device according to claim 2, characterized in that: The second rotor comprises: a rotor core, the rotor core having a plurality of second rotor teeth, the plurality of second rotor teeth being arranged at intervals along the circumferential direction of the first rotor, and the number of the second rotor teeth being greater than the number of the first rotor teeth; A rotor support, the rotor core is fixed on the rotor support, and one end of the output shaft is fixedly connected to the rotor support.

4. The cleaning device according to claim 3, characterized in that The rotor support includes a first end cover and a support rod. The first end cover is arranged perpendicular to the axis of the first rotor and is located at one end of the first rotor in the axial direction. There are multiple support rods, one end of each of the multiple support rods is connected to the circumference of the first end cover, and the other end of each of the multiple support rods extends toward the other end of the first rotor in the axial direction. The support rod is arranged between two adjacent second rotor teeth.

5. The cleaning device according to claim 4, characterized in that The second rotor further includes: a rotor end cover, which is connected to the rotor support and is located at the other end of the first rotor in the axial direction.

6. The cleaning device according to claim 5, characterized in that The first end cover is provided with a first bearing, the rotor end cover is provided with a second bearing, and both ends of the input shaft are supported by the first bearing and the second bearing respectively.

7. The cleaning device according to claim 6, characterized in that A first groove is provided on a side of the first end cover facing the first rotor, and the first bearing is arranged in the first groove. A second groove is provided on a side of the rotor end cover facing the first rotor, and the second bearing is arranged in the second groove.

8. The cleaning device according to claim 5, characterized in that Also includes: A base is arranged between the motor and the reduction mechanism, the base is provided with a third groove, a third bearing is arranged in the third groove, the rotor end cover has a boss protruding toward the motor, and the third bearing is sleeved on the outer surface of the boss.

9. The cleaning device according to any one of claims 1 to 8, characterized in that: The stator includes a stator core and a magnetic component. The stator core is sleeved on the radial outer side of the second rotor. The stator core has a plurality of stator slots. The plurality of stator slots are arranged at intervals along the circumference of the stator core. The magnetic component is arranged in the stator slots. The magnetic component is a stator magnet or a stator winding.

10. The cleaning device according to any one of claims 1 to 8, characterized in that: Also includes: A housing is provided, wherein an accommodating cavity is defined on the inner side of the housing, and the first rotor, the second rotor and the stator are all arranged in the accommodating cavity.

11. The cleaning device according to claim 10, characterized in that The side of the accommodating cavity facing the motor is open, and the cleaning device further comprises: a second end cover, and the second end cover is arranged on the open side of the accommodating cavity.

12. The cleaning device according to claim 10, characterized in that A fourth groove is formed on the inner wall of the accommodating cavity, a through hole is formed on the shell which passes through the bottom wall of the fourth groove, a fourth bearing is arranged in the fourth groove, the output shaft is supported by the fourth bearing, one end of the output shaft is connected to the second rotor, and the other end passes through the through hole and extends out of the shell.

13. The cleaning device according to any one of claims 1 to 8, characterized in that: The input shaft is connected to the motor shaft of the motor via a coupling.

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