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CN-224218211-U - Cleaning device and drive assembly

CN224218211UCN 224218211 UCN224218211 UCN 224218211UCN-224218211-U

Abstract

The invention relates to cleaning equipment and a driving assembly, wherein the cleaning equipment comprises the driving assembly, the cleaning assembly and an energy supply assembly, the driving assembly comprises a rotor assembly and a stator assembly, the rotor assembly comprises a driving shaft and at least one pair of magnetic pieces which are fixed relative to the driving shaft and matched with a stator core body, the magnetic pieces at least comprise a first magnet and a second magnet, at least one part of the radial outer ends of the first magnet and the second magnet are curved bodies which are opposite in polarity and matched with the same stator core body, the curved bodies are provided with first arcs which are outwards directed, the stator core body is provided with second arcs which are outwards directed, the central angle corresponding to the second arcs is recorded as theta, the central angle corresponding to the first arcs is recorded as beta, and the following relation between theta and beta is satisfied that theta/beta is more than or equal to 0.875 and less than or equal to 2.22. According to the cleaning equipment provided by the disclosure, the shape and structure of the stator core body and the magnetic piece are optimized, so that the flexibility of the cleaning equipment is improved, and the comfort level and the cleaning efficiency of a user are improved.

Inventors

  • XIE YI
  • LI ZHOUJIAN
  • LI YANQIANG
  • ZENG MENGWEI

Assignees

  • 深圳素士科技股份有限公司

Dates

Publication Date
20260508
Application Date
20250425

Claims (20)

  1. 1. A cleaning apparatus, comprising: A drive assembly (1) comprising a rotor assembly and a stator assembly, the stator assembly comprising at least one pair of magnetizable stator cores (121) distributed evenly in a circumferential direction, and each stator core (121) being provided with an excitation winding (122), the excitation windings (122) being configured to generate an alternating magnetic field in an energized state, the rotor assembly comprising a drive shaft (111) and at least one pair of magnetic members (112) fixed relative to the drive shaft (111) and cooperating with the stator cores (121), the magnetic members (112) being configured to cause a reciprocating angular displacement movement of the rotor assembly about its rotational axis under the drive of the alternating magnetic field; The magnetic piece (112) at least comprises a first magnet (1121) and a second magnet (1122) which are circumferentially arranged around the driving shaft (111) and radially extend outwards from the driving shaft (111), at least one part of the radially outer ends of the first magnet (1121) and the second magnet (1122) are bent bodies which are opposite in polarity and are matched with the same stator core (121), the bent bodies are provided with first arc shapes which are outwards directed, one ends of the stator core (121) close to the first magnet (1121) and the second magnet (1122) are matched with the bent bodies and are provided with second arc shapes which are outwards directed, the central angle corresponding to the second arc shapes is recorded as theta, the central angle corresponding to the first arc shapes is recorded as beta, and the relationship between theta and beta is more than or equal to 0.875 and less than or equal to 2.22; A cleaning assembly (2) coupled to the drive assembly (1); -an energizing assembly (3), the energizing assembly (3) being configured to energize the excitation winding (122) by an electrical signal.
  2. 2. The cleaning apparatus of claim 1, wherein the relationship between θ and β is 1.25≤θ/β≤1.55.
  3. 3. The cleaning apparatus of claim 1, wherein θ has a value in the range of 70 ° to 100 °.
  4. 4. The cleaning apparatus of claim 1, wherein β has a value in the range of 45 ° to 80 °.
  5. 5. The cleaning apparatus according to claim 1, wherein in the same magnetic member (112), an angle between a center line of the first magnet (1121) and a center line of the second magnet (1122) is denoted as α, wherein α has a value in a range of 80 ° to 100 °.
  6. 6. The cleaning apparatus of claim 1, wherein the curved body has an inwardly directed third arc and two sides connecting respective ends of the first arc and the third arc, respectively, and wherein the first arc and the third arc have the same angle as a central angle corresponding to each other.
  7. 7. The cleaning apparatus of claim 6, wherein an air gap width between the first arc of the first magnet (1121), the second magnet (1122) and an end of the stator core (121) facing the magnetic member (112) is denoted as d, wherein d has a value ranging from 0.15 mm to 0.5 mm.
  8. 8. The cleaning apparatus according to claim 1, characterized in that the stator assembly comprises magnetically permeable portions spaced apart from the stator core (121) in a circumferential direction, the magnetically permeable portions extending in a radial direction of the stator core (121) in a direction towards the magnetic member (112) and being configured to cooperate with the magnetic member (112).
  9. 9. The cleaning apparatus of claim 8, wherein the rotor assembly has an equilibrium position in which it cooperates with the stator core (121) and an unbalanced position in which it is offset from the stator core (121), and wherein the magnetic member (112) is configured to deflect by a predetermined angle about a center of rotation of the rotor assembly in a plane perpendicular to the axis of rotation so that its projection radially toward the center of projection at least partially overlaps the magnetically permeable portion.
  10. 10. A cleaning apparatus according to claim 8, characterized in that the projection of the magnetic member (112) onto the center of the projection in the radial direction thereof and the projection of the magnetically conductive portion onto the center of the projection in the radial direction of the stator core (121) are always kept in an at least partially overlapping state in the range of motion of the rotor assembly in a reciprocating angular displacement with the center of rotation of the rotor assembly as the projection center in a plane perpendicular to the rotation axis.
  11. 11. The cleaning apparatus of claim 8, wherein the magnetically permeable portion includes a first magnetically permeable body (1231) located on one side of the stator core (121) for mating with the first magnet (1121), and a second magnetically permeable body (1232) located on the other side of the stator core (121) for mating with the second magnet (1122).
  12. 12. The cleaning apparatus of claim 11, wherein at least one plane is a symmetry plane in a plane containing a rotation axis of the rotor assembly, at least one pair of the stator cores (121) are disposed mirror symmetrically with respect to the symmetry plane, an X-axis is defined which is located in the symmetry plane and perpendicular to the rotation axis, wherein an angle between a center line of the first magnetic conductor (1231) and the X-axis, an angle between a center line of the second magnetic conductor (1232) and the X-axis is denoted as γ, and wherein γ has a value ranging from 10 ° to 40 °.
  13. 13. The cleaning apparatus according to claim 11, wherein one end of the first and second magnetic conductors (1231, 1232) facing the magnetic member (112) is configured as an arc surface.
  14. 14. A cleaning device according to claim 1, further comprising a transmission assembly (4), one end of the transmission assembly (4) being releasably connected to the cleaning assembly (2) and the other end being connected to the drive shaft (111).
  15. 15. A cleaning device according to claim 1, characterized in that the frequency of the drive assembly (1) in the operating state is in the range of 100 hz to 180 hz.
  16. 16. A cleaning apparatus according to claim 1, characterized in that the unidirectional rotation angle of the drive shaft (111) with respect to the stator core (121) is 0 ° to 30 °.
  17. 17. The cleaning apparatus according to any one of claims 1 to 16, wherein two of the stator cores (121) are provided, the two stator cores (121) are configured to be symmetrically distributed, and two of the magnetic members (112) are provided, one of the stator cores (121) being corresponding to each of the magnetic members (112).
  18. 18. A cleaning apparatus, comprising: The driving assembly (1) comprises a rotor assembly and a stator assembly, wherein the stator assembly comprises at least one pair of magnetizable stator cores (121) which are uniformly distributed along the circumferential direction, each stator core (121) is provided with an exciting winding (122), and the exciting windings (122) are configured to generate an alternating magnetic field in an electrified state; The magnetic piece (112) at least comprises a first magnet (1121) and a second magnet (1122) which are circumferentially arranged around the driving shaft (111) and radially extend outwards from the driving shaft (111), at least one part of the radially outer ends of the first magnet (1121) and the second magnet (1122) are bent bodies which are opposite in polarity and are matched with the same stator core (121), the bent bodies are provided with first arc shapes which are outwards directed, one ends of the stator core (121) close to the first magnet (1121) and the second magnet (1122) are matched with the bent bodies and are provided with second arc shapes which are outwards directed, the central angle corresponding to the second arc shapes is recorded as theta, the central angle corresponding to the first arc shapes is recorded as beta, and the relationship between theta and beta is more than or equal to 0.875 and less than or equal to 2.22; A cleaning assembly (2) coupled to the drive assembly (1); -an energizing assembly (3), the energizing assembly (3) being configured to energize the excitation winding (122) by an electrical signal.
  19. 19. The cleaning apparatus according to claim 18, further comprising a drive pump (12), the drive pump (12) being in communication with the flow channel, the drive pump (12) being configured to pump cleaning liquid into the cleaning assembly (2) through the flow channel.
  20. 20. A drive assembly (1), characterized in that the drive assembly (1) comprises: A stator assembly including at least a pair of magnetizable stator cores (121) uniformly distributed in a circumferential direction, and each stator core (121) being provided with an exciting winding (122), the exciting windings (122) being configured to generate an alternating magnetic field in an energized state; a rotor assembly comprising a drive shaft (111) and at least one pair of magnetic members (112) fixed relative to the drive shaft (111) and cooperating with the stator core (121), the magnetic members (112) being configured to reciprocate the rotor assembly in an angular displacement motion about its axis of rotation under the drive of an alternating magnetic field; the magnetic piece (112) at least comprises a first magnet (1121) and a second magnet (1122) which are circumferentially arranged around the driving shaft (111) and radially extend outwards from the driving shaft (111), at least one part of the radially outer ends of the first magnet (1121) and the second magnet (1122) are bent bodies which are opposite in polarity and matched with the same stator core (121), the bent bodies are provided with first arc shapes which are outwards directed, one ends of the stator core (121) close to the first magnet (1121) and the second magnet (1122) are matched with the bent bodies and are provided with second arc shapes which are outwards directed, the central angle corresponding to the second arc shapes is recorded as theta, the central angle corresponding to the first arc shapes is recorded as beta, and the relationship between theta and beta is more than or equal to 0.875 and less than or equal to 2.22.

Description

Cleaning device and drive assembly Technical Field The present disclosure relates to the field of oral cleaning devices, and more particularly, to a cleaning device and a drive assembly. Background In oral cleaning devices, the motor serves as a core component and serves the critical function of driving the brush head in motion. Through the accurate control of the motor, the brush head can realize the vibration or the swing of a specific mode, so that dental plaque and food residues on the tooth surface can be effectively removed, and a better cleaning effect is provided compared with the traditional manual toothbrush. In the prior art, the cooperative mechanism of the motor structure and the brush head movement is a key factor influencing the performance of equipment, and the performance of the motor determines the vibration frequency and amplitude of the brush head and influences the cleaning effect. Optimizing the motor configuration can promote user experience. Disclosure of utility model In view of the above, the embodiments of the present disclosure provide a cleaning apparatus and a driving assembly to solve the technical drawbacks of the prior art. In order to achieve the above purpose, the present disclosure adopts the following technical scheme: According to a first aspect of the present disclosure, there is provided a cleaning apparatus comprising: The driving assembly comprises a rotor assembly and a stator assembly, wherein the stator assembly comprises at least one pair of magnetizable stator cores which are uniformly distributed along the circumferential direction, and each stator core is provided with an excitation winding which is configured to generate an alternating magnetic field in an electrified state; The magnetic piece at least comprises a first magnet and a second magnet which are circumferentially arranged around the driving shaft and radially extend outwards from the driving shaft, wherein at least one part of the radially outer ends of the first magnet and the second magnet is a curved body which has opposite polarities and is matched with the same stator core, the curved body is provided with a first arc which points outwards, one end of the stator core, which is close to the first magnet and one end of the second magnet, is matched with the curved body and is provided with a second arc which points outwards, the central angle corresponding to the second arc is recorded as theta, the central angle corresponding to the first arc is recorded as beta, and the relation between theta and beta is satisfied that theta/beta is more than or equal to 0.875 and less than or equal to 2.22; A cleaning assembly coupled to the drive assembly; An energizing assembly configured to energize the field winding with an electrical signal. In one embodiment of the present disclosure, wherein the relationship between θ and β satisfies 1.25≤θ/β≤1.55. In one embodiment of the present disclosure, θ has a value in the range of 70 ° to 100 °. In one embodiment of the present disclosure, wherein β has a value in the range of 45 ° to 80 °. In one embodiment of the present disclosure, in the same magnetic member, an included angle between a center line of the first magnet and a center line of the second magnet is denoted as α, where α has a value ranging from 80 ° to 100 °. In one embodiment of the disclosure, the curved body has a third arc directed inwards, and two sides respectively connecting two ends of the first arc and the third arc, wherein the angles of central angles corresponding to the first arc and the third arc are the same. In one embodiment of the present disclosure, the width of the air gap between the first arc of the first magnet and the second magnet and the end of the stator core facing the magnetic member is denoted as d, where d has a value ranging from 0.15 mm to 0.5 mm. In one embodiment of the present disclosure, the stator assembly includes magnetic conductive portions spaced apart from the stator core in a circumferential direction, the magnetic conductive portions extending in a radial direction of the stator core toward the magnetic member and configured to be engaged with the magnetic member. In one embodiment of the present disclosure, the rotor assembly has a balanced position cooperating with the stator core and an unbalanced position offset from the stator core, and the magnetic member is configured to deflect a predetermined angle so that its projection in a radial direction toward a center on the projection center overlaps at least partially the magnetically conductive portion in a plane perpendicular to the rotation axis with the rotation center of the rotor assembly as the projection center. In one embodiment of the present disclosure, in a plane perpendicular to the rotation axis, with the rotation center of the rotor assembly as a projection center, a projection of the magnetic member in a radial direction thereof toward a center on the projection center and a projectio