CN219227306U

CN219227306U - Acoustic wave motor with rotor fixing structure

Info

Publication number: CN219227306U
Application number: CN202222995057.2U
Authority: CN
Inventors: 杨小迎
Original assignee: Dongguan Meiyang Lianying Electrical Appliances Co ltd
Current assignee: Dongguan Meiyang Lianying Electrical Appliances Co ltd
Priority date: 2022-11-10
Filing date: 2022-11-10
Publication date: 2023-06-20
Anticipated expiration: 2032-11-10

Abstract

The utility model discloses an acoustic wave motor with a rotor fixing structure, which comprises an acoustic wave motor body, wherein the acoustic wave motor body comprises a shell, a bearing, a rotor assembly, a stator core assembly, two coils and a rear cover, the bearing is fixedly arranged at the top of the inner side of the shell, the rotor assembly is fixedly arranged in the bearing, the stator core assembly is fixedly arranged at the bottom of the inner side of the shell, and the two coils are wound on the surface of the stator core assembly.

Description

Acoustic wave motor with rotor fixing structure

Technical Field

The utility model relates to the field of acoustic motors, in particular to an acoustic motor with a rotor fixing structure.

Background

The motor structure of the electric toothbrush is provided with a motor-rotating fixed magnetic field rebound sound wave motor and a motor rotor spring rebound electric toothbrush motor structure, and the motor-rotating fixed magnetic field rebound sound wave motor and the motor rotor spring rebound are not greatly different in use experience, but the motor rotor spring rebound sound wave motor is higher in cost performance, so that more electric toothbrushes select the motor rotor spring rebound sound wave motor as toothbrush power.

The existing motor rotor elastic piece rebound acoustic wave motor has the following defects when in use:

1. when the planar sheet-shaped elastic sheet and the cylindrical elastic sheet are fixed with the motor magnet frame and the motor rear cover, the fixing is difficult due to the fact that the shape is determined, and the die and the production cost are increased in the processing and fixing mode;

2. the planar sheet spring piece and the cylindrical spring piece are easy to deform when pressure exists at two axial ends of the output shaft, rebound of the rotor assembly can be influenced, and further performance of the motor is directly influenced.

Disclosure of Invention

The utility model aims to provide an acoustic wave motor with a rotor fixing structure, which solves the problems that when a plane sheet-shaped elastic sheet and a cylindrical elastic sheet are fixed with a motor magnet frame and a motor rear cover in the background technology, the shape is difficult to determine, so that the processing and fixing mode is increased in mould and production cost, and the rebound of a rotor assembly is influenced when the plane sheet-shaped elastic sheet and the cylindrical elastic sheet have pressure at two axial ends of an output shaft, and further the performance of the motor is directly influenced.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a sound wave motor of rotor fixed knot constructs, includes sound wave motor body, sound wave motor body includes casing, bearing, rotor subassembly, stator core subassembly, two coils and hou gai, the inboard top of casing is fixed to be provided with the bearing, the inside of bearing is fixed to be provided with rotor subassembly, the inboard bottom of casing is fixed to be provided with stator core subassembly, stator core subassembly's surface winding has two coils, the bottom mounting of casing is provided with the back lid, rotor subassembly includes magnet frame and output shaft, the mounting hole has been seted up at the middle part of magnet frame, the inside block of mounting hole is provided with magnet, the fixed directional shell fragment that is provided with of one end of magnet frame, the fixed output shaft that is provided with of one end of directional shell fragment is kept away from to magnet frame, and this sound wave motor is through setting up the directional shell fragment of axial pressurization difficult deformation, and the back lid of magnet frame and motor is connected to directional shell fragment, and this kind of fixed knot constructs convenient in production, and the motor performance uniformity to this directional shell fragment has the axial pressurization difficult deformation's advantage, can avoid the axial both ends to have the axial both ends to influence the deformation of pressure subassembly when the output shaft has pressure, and then the direct performance of rotor can influence.

Preferably, the magnet frame and the output shaft are of an integrated structure, so that the stability of the structure is improved.

Preferably, one end of the output shaft far away from the magnet frame penetrates through the machine shell to the outside, and the toothbrush is connected to the end of the output shaft for use.

Preferably, the directional spring plate extends to the outside through the rear cover, and the directional spring plate is axially pressurized and is not easy to deform.

Preferably, one ends of the two coils extend to the outside through the rear cover, so that conduction is facilitated.

Preferably, the fixed magnetic conductive sheets are fixedly arranged on two sides of the magnet frame, and the two fixed magnetic conductive sheets are arranged corresponding to the magnet, so that the magnet is limited through the two fixed magnetic conductive sheets.

Preferably, the stator core assembly is arranged on the surface of the magnet frame, so that the coil is sleeved on the surface of the magnet.

Compared with the prior art, the utility model has the beneficial effects that:

1. according to the sound wave motor, the directional spring piece which is not easy to deform due to axial pressurization is arranged at one end of the magnet frame, and the magnet frame and the rear cover of the motor are connected through the directional spring piece;

2. the directional spring plate has the advantages of difficult deformation due to axial pressurization, deformation caused by pressure at two axial ends of the output shaft can be avoided, resilience of the rotor assembly can be influenced, and further performance of the motor is directly influenced.

Drawings

FIG. 1 is a perspective view of an acoustic wave motor body of the present utility model;

FIG. 2 is an exploded view of the sonic motor body of the present utility model;

FIG. 3 is a perspective view of a rotor assembly of the present utility model;

fig. 4 is an exploded view of the rotor assembly of the present utility model.

In the figure: 1. an acoustic wave motor body; 11. a housing; 12. a bearing; 13. a rotor assembly; 131. a magnet frame; 132. a mounting hole; 133. fixing the magnetic conductive sheet; 134. a magnet; 135. a directional spring plate; 136. an output shaft; 14. a stator core assembly; 15. a coil; 16. and a rear cover.

Detailed Description

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model.

Referring to fig. 1-4, the utility model provides a sound wave motor with a rotor fixing structure, which comprises a sound wave motor body 1, the sound wave motor body 1 comprises a shell 11, a bearing 12, a rotor component 13, a stator core component 14, two coils 15 and a rear cover 16, the top of the inner side of the shell 11 is fixedly provided with the bearing 12, the rotor component 13 is fixedly arranged in the bearing 12, the bottom of the inner side of the shell 11 is fixedly provided with the stator core component 14, the surface of the stator core component 14 is wound with the two coils 15, the bottom of the shell 11 is fixedly provided with the rear cover 16, the rotor component 13 comprises a magnet frame 131 and an output shaft 136, a mounting hole 132 is formed in the middle of the magnet frame 131, a magnet 134 is clamped in the mounting hole 132, one end of the magnet frame 131 is fixedly provided with a directional spring plate 135, one end of the magnet frame 131, which is far away from the directional spring plate 135, is fixedly provided with the output shaft 136, the sound wave motor is convenient to produce through the directional spring plate 135 which is connected with the rear cover 16 of the magnet frame 131 and the motor, the motor performance consistency is good, and the directional spring plate 136 can not influence the axial deformation of the motor can be avoided when the axial deformation of the output shaft is influenced by the directional spring plate 136.

The magnet frame 131 and the output shaft 136 are of an integrated structure to improve the stability of the structure.

The end of the output shaft 136 away from the magnet frame 131 extends through the housing 11 to the outside, and the toothbrush is connected to the end of the output shaft 136 for use.

The directional spring plate 135 extends to the outside through the rear cover 16, and the directional spring plate 135 is not easy to deform when being axially pressurized.

One end of each of the two coils 15 extends to the outside through the rear cover 16, facilitating conduction.

Fixed magnetic conductive sheets 133 are fixedly arranged on two sides of the magnet frame 131, the two fixed magnetic conductive sheets 133 are arranged corresponding to the magnet 134, and the magnet 134 is limited through the two fixed magnetic conductive sheets 133.

The stator core assembly 14 is disposed on the surface of the magnet frame 131 such that the coil 15 is sleeved on the surface of the magnet 134.

When the embodiment of the application is used, the following steps are adopted: this sound wave motor is through setting up the difficult flexible directional shell fragment 135 of axial pressurization at the one end of magnet frame 131, connects the back lid 16 of magnet frame 131 and motor through directional shell fragment 135, and this kind of fixed knot constructs convenient production, and motor performance uniformity is good to this directional shell fragment 135 has the difficult flexible advantage of axial pressurization, can avoid having deformation when there is pressure at the axial both ends of output shaft 136, can influence the resilience of rotor subassembly 13, and then directly influences the performance of motor.

Although the present utility model has been described with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements and changes may be made without departing from the spirit and principles of the present utility model.

Claims

1. The utility model provides a sound wave motor of rotor fixed knot constructs, includes sound wave motor body (1), its characterized in that: the sound wave motor body (1) comprises a shell (11), a bearing (12), a rotor assembly (13), a stator core assembly (14), two coils (15) and a rear cover (16), the bearing (12) is fixedly arranged at the top of the inner side of the shell (11), the rotor assembly (13) is fixedly arranged at the inner side of the bearing (12), the stator core assembly (14) is fixedly arranged at the bottom of the inner side of the shell (11), the two coils (15) are wound on the surface of the stator core assembly (14), the rear cover (16) is arranged at the bottom end of the shell (11) in a fixed manner, the rotor assembly (13) comprises a magnet frame (131) and an output shaft (136), a mounting hole (132) is formed in the middle of the magnet frame (131), a magnet (134) is fixedly arranged at one end of the magnet frame (131), and one end of the magnet frame (131) away from the directional spring sheet (135) is fixedly provided with the output shaft (136).

2. The acoustic wave motor of claim 1, wherein: the magnet frame (131) and the output shaft (136) are of an integrated structure.

3. The acoustic wave motor of claim 1, wherein: one end of the output shaft (136) far away from the magnet frame (131) penetrates through the shell (11) to the outside.

4. The acoustic wave motor of claim 1, wherein: the orientation spring (135) extends through the rear cover (16) to the outside.

5. The acoustic wave motor of claim 1, wherein: one end of each of the two coils (15) extends to the outside through the rear cover (16).

6. The acoustic wave motor of claim 1, wherein: fixed magnetic conductive sheets (133) are fixedly arranged on two sides of the magnet frame (131), and the two fixed magnetic conductive sheets (133) are arranged corresponding to the magnets (134).

7. The acoustic wave motor of claim 1, wherein: the stator core assembly (14) is arranged on the surface of the magnet frame (131).