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CN-224233523-U - Acoustic wave motor and electric toothbrush

CN224233523UCN 224233523 UCN224233523 UCN 224233523UCN-224233523-U

Abstract

The utility model provides an acoustic wave motor, which comprises a stator shell, an end cover assembly, a rotor assembly and a stator core, wherein the stator core comprises a winding side and two connecting sides, the two connecting sides are symmetrically arranged, two sides of the winding side are respectively connected with the two connecting sides, the other side of the connecting side is connected with the stator shell, a wire group is wound on the winding side, a first accommodating space is enclosed between the connecting side and the winding side, and when winding, only one side is needed to be wound, so that the procedure is simplified, and the assembly efficiency is improved.

Inventors

  • LI JINGBO
  • WANG LONG
  • CHEN YANPING

Assignees

  • 深圳市精锐昌精密智能有限公司

Dates

Publication Date
20260512
Application Date
20250429

Claims (10)

  1. 1. The sound wave motor is characterized by comprising a stator shell (1), an end cover assembly (2), a rotor assembly (3) and a stator core (4), wherein the stator core (4) comprises a winding side (41) and two connecting sides (42), the two connecting sides (42) are symmetrically arranged, two connecting sides (42) are respectively connected with two sides of the winding side (41), the other side of the connecting side (42) is connected with the stator shell (1), a wire group (45) is wound on the winding side (41), a first accommodating space (43) is formed by surrounding the winding side (41) and the connecting side (42), the first accommodating space (43) is used for accommodating a magnetic part of the rotor assembly (3), the end cover assembly (2) is arranged on the end part of the stator shell (1), the rotor assembly (3) is rotationally connected with the end cover assembly (2), and the wire group (45) is used for generating an alternating magnetic field through electrifying so as to enable the rotor assembly (3) to swing back and forth.
  2. 2. The acoustic wave motor according to claim 1, wherein the stator housing (1) comprises two fixing sides (11) and a connecting rod (12), the two fixing sides (11) are symmetrically arranged, the connecting rod (12) is connected between the two fixing sides (11), a second accommodating space (13) is formed between the two fixing sides (11), the second accommodating space (13) is used for accommodating the stator core (4), and the connecting side (42) is fixed on the fixing sides (11).
  3. 3. The sonic motor as claimed in claim 2, characterized in that two of the connecting rods (12) are provided, a gap being reserved between the two connecting rods (12) and a gap being reserved between the two fixing sides (11).
  4. 4. The acoustic wave motor according to claim 1, wherein positioning columns (14) are convexly arranged at two ends of the stator shell (1), the end cover assembly (2) comprises a front end cover (21) and a rear end cover (22), and positioning holes (23) corresponding to the positioning columns (14) are concavely arranged in the front end cover (21) and the rear end cover (22).
  5. 5. The acoustic wave motor according to claim 4, wherein the rotor assembly (3) comprises a rotor core (31), a rotating shaft (32) and a permanent magnet (33), the rotor core (31) is fixed on the rotating shaft (32), the permanent magnet (33) is embedded on the stator core (4), bearings (24) are arranged on the front end cover (21) and the rear end cover (22), and the rotating shaft (32) is rotatably connected with the front end cover (21) and the rear end cover (22) through the bearings (24).
  6. 6. The acoustic wave motor according to claim 5, characterized in that the stator core (4) is provided with an embedding groove (44), and the embedding groove (44) is used for embedding the permanent magnet (33).
  7. 7. The acoustic wave motor according to claim 5, wherein the permanent magnets are provided in a plurality, the plurality of permanent magnets are divided into two groups, and the two groups of permanent magnets are symmetrically provided on the rotor core (31).
  8. 8. The acoustic wave motor according to claim 5, wherein the end of the rotating shaft (32) is provided with two tangential planes (321) along the axial direction thereof, the two tangential planes (321) are symmetrically arranged, the rear end cover (22) is provided with a limiting hole (221) corresponding to the tangential plane (321), a gap is reserved between the limiting hole (221) and the end of the rotating shaft (32), and the limiting hole (221) is used for limiting the rotating angle of the rotating shaft (32).
  9. 9. The acoustic wave motor according to claim 4, wherein the rear end cap (22) is provided with a through hole (222) through which a lead wire (25) can be passed, and the lead wire (25) is used for conducting electricity to the wire group (45).
  10. 10. An electric toothbrush comprising an acoustic wave motor as claimed in any one of claims 1 to 9.

Description

Acoustic wave motor and electric toothbrush Technical Field The utility model relates to the technical field of electric equipment, in particular to an acoustic wave motor and an electric toothbrush. Background The electric toothbrush is primarily based on the drive of an electric motor which is capable of producing a vibratory or rotational motion to assist in cleaning teeth. The rotor winding of the traditional motor is arranged between the two pairs of magnets, and the magnetic flux center of the rotor winding swings back and forth between the magnetic flux centers of the two pairs of magnets by means of alternating magnetic fields generated when the winding coils are electrified and mutual alternate attraction of the two pairs of permanent magnets. Because the winding coils are required to be arranged symmetrically, one side of the rotor winding needs to be wound and the other side needs to be wound when the rotor winding is wound, the working procedure is complex, and the assembly efficiency is low. Disclosure of utility model Therefore, the utility model aims to provide an acoustic wave motor, which aims to solve the problems of complicated working procedures and lower efficiency caused by the fact that two winding coils are needed and symmetrically arranged in the prior art, and the rotor winding needs to be wound on one side and then the other side when being wound. The utility model provides an acoustic wave motor which comprises a stator shell, an end cover assembly, a rotor assembly and a stator core, wherein the stator core comprises a winding side and two connecting sides, the two connecting sides are symmetrically arranged, two sides of the winding side are respectively connected with the two connecting sides, the other side of the connecting side is connected with the stator shell, a wire set is wound on the winding side, a first accommodating space is formed between the connecting side and the winding side in a surrounding mode, the first accommodating space is used for accommodating a magnetic part of the rotor assembly, the end cover assembly is arranged on the end part of the stator shell, the rotor assembly is rotationally connected to the end cover assembly, and the wire set is used for generating an alternating magnetic field by electrifying so as to enable the rotor assembly to swing back and forth. Further, the stator housing includes fixed side and connecting rod, fixed side is equipped with two, two fixed side symmetry sets up, the connecting rod is connected two between the fixed side, two enclose into the second accommodation space between the fixed side, the second accommodation space is used for holding stator core, the connection side is fixed in on the fixed side. Further, two connecting rods are arranged, a gap is reserved between the two connecting rods, and a gap is reserved between the two fixing sides. Further, positioning columns are convexly arranged at two ends of the stator shell, the end cover assembly comprises a front end cover and a rear end cover, and positioning holes corresponding to the positioning columns are concavely formed in the front end cover and the rear end cover. Further, the rotor assembly comprises a rotor core, a rotating shaft and a permanent magnet, the rotor core is fixed on the rotating shaft, the permanent magnet is embedded on the stator core, bearings are arranged on the front end cover and the rear end cover, and the rotating shaft is in rotary connection with the front end cover and the rear end cover through the bearings. Further, an embedded groove is formed in the stator core, and the embedded groove is used for embedding the permanent magnet. Further, the permanent magnets are arranged in a plurality, the permanent magnets are divided into two groups, and the two groups of permanent magnets are symmetrically arranged on the rotor iron core. Further, the tip of pivot has two tangent planes along its axial cutting, two the tangent plane symmetry sets up, set up on the rear end cap with the spacing hole that the tangent plane corresponds, spacing hole with remain the clearance between the tip of pivot, spacing hole is used for limiting pivot pivoted angle. Further, the rear end cover is provided with a through hole through which a lead wire can pass, and the lead wire is used for conducting electricity to the wire group. The utility model also provides an electric toothbrush comprising the acoustic wave motor. The utility model has the beneficial effects that the sound wave motor comprises a stator shell, an end cover assembly, a rotor assembly and a stator core, wherein the stator core comprises a winding side and two connecting sides, the two connecting sides are symmetrically arranged, two sides of the winding side are respectively connected with the two connecting sides, the other side of the connecting side is connected with the stator shell, a wire group is wound on the winding side, a first accommodating space is formed by surrou