CN218829659U

CN218829659U - Magnetic suspension brushless motor

Info

Publication number: CN218829659U
Application number: CN202223225923.6U
Authority: CN
Inventors: 王竹; 黄明清
Original assignee: Kerui Technology Dongguan Co ltd
Current assignee: Kerui Technology Dongguan Co ltd
Priority date: 2022-12-02
Filing date: 2022-12-02
Publication date: 2023-04-07
Anticipated expiration: 2032-12-02

Abstract

The utility model discloses a magnetic suspension brushless motor, which comprises a housing, the inside of casing is vertically provided with a shaft branch, and the shaft branch rotates inside the casing, the shaft branch sleeve is provided with a rotor core, and coaxial rotation is carried out between the rotor core and the shaft branch, the rotor core is provided with magnetic steel, and the magnetic steel can be distributed at the outer end of the rotor core according to a certain angle annular array uniform or asymmetric polar logarithm symmetry by taking the radial circle center of the rotor core as the center, the outer part of the rotor core is sleeved with a stator core, and coaxial rotation is carried out between the rotor core and the stator core, and coaxial rotation is carried out between the stator core and the shaft branch; compared with the prior art, the beneficial effects of the utility model are that: the magnetic suspension type magnetic suspension power transmission device has the advantages of high efficiency, low cost, compact structure, stable power transmission and high reliability, the magnetic field pushes the magnetic steel to reciprocate in the radial direction, the left and right swinging of the shaft branches is realized, the power transmission is stable, and the mechanical energy supply of magnetic suspension is realized.

Description

Magnetic suspension brushless motor

Technical Field

The utility model belongs to the technical field of brushless motor and specifically relates to a magnetic suspension brushless motor is related to.

Background

The brushless motor is the most used motor except the brush motor in the mold boundary, the brushless direct current motor does not use a mechanical brush device, a Hall sensor and a counter electromotive force position detection mode or a frequency and duty ratio control mode are adopted to replace a carbon brush commutator, a rare earth material is used as a permanent magnet material of a rotor, and the brushless direct current motor has great advantages in performance compared with a common traditional direct current motor. The device has the advantages of high efficiency, low energy consumption, low noise, super long service life, high reliability, servo control, stepless frequency conversion speed regulation and the like.

However, brushless motor among the prior art uses when electronic toothbrush, most all is single swing, lead to the rotor to incline because of the unbalanced magnetic force, unable normal vibration, and at application number 202022585069.9, the name is one kind high reliability one-way magnetic suspension sound wave brushless motor's utility model patent mentions and uses the retaining ring to pass and cup joint at the rotor subassembly both ends from motor shaft branch both ends, carries out the equipment of part again, can effectively improve the reliability of complete machine, can avoid the inside ageing and the structure of motor to drop, extension fixture's life, the utility model discloses this structure has still been prolonged to magnetic suspension brushless motor is proposed on this basis.

SUMMERY OF THE UTILITY MODEL

The utility model discloses an it is not enough to overcome above-mentioned condition, aims at providing the technical scheme that can solve above-mentioned problem.

Magnetic suspension brushless motor, which comprises a housing, the inside vertical axle branch that is provided with of casing, and the axle branch rotates inside the casing, the axle branch cover is equipped with rotor core, and carries out coaxial rotation between rotor core and the axle branch, rotor core is provided with the magnet steel, and the magnet steel uses rotor core's radial centre of a circle as the even or asymmetric polar logarithm symmetry of certain angle ring array all can distribute in the rotor core outer end as the center, the magnet steel is fan-shaped shape, and the magnet steel can carry out quantity according to rotor core overall structure and prescribe a limit to, the outside cover of rotor core is equipped with stator core, and rotor core rotates in stator core is inside to the axle branch rotates in stator core's inside, the inside lateral wall of stator core vertical shaping respectively has tooth, and tooth is at least four to tooth aligns each other between respectively and the magnet steel.

Preferably, the stator core top transversely is provided with first line frame, and on first line frame cover located the axle branch to the axle branch rotates in first line frame inside, the stator core bottom transversely sets up the second line frame, and the second line frame cover is located on the axle branch, and the axle branch rotates in second line frame inside.

Preferably, the top end of the casing is transversely provided with a front cover, the shaft branch penetrates through the front cover and rotates with the inside of the front cover, a first ball bearing is arranged at the joint between the shaft branch and the front cover, and the shaft branch penetrates through the first ball bearing.

Preferably, the bottom end of the casing is transversely provided with a rear cover, the shaft branch rotates on the rear cover, a joint between the shaft branch and the rear cover is arranged on the second ball bearing, and the second ball bearing is positioned on the rear cover.

Compared with the prior art, the beneficial effects of the utility model are that: the magnetic suspension type magnetic suspension power transmission device has the advantages of high efficiency, low cost, compact structure, stable power transmission and high reliability, the magnetic field pushes the magnetic steel to reciprocate in the radial direction, the left and right swinging of the shaft branches is realized, the power transmission is stable, and the mechanical energy supply of magnetic suspension is realized.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.

FIG. 1 is a schematic structural diagram of a magnetically levitated brushless motor;

FIG. 2 is another structural diagram of a magnetically levitated brushless motor;

FIG. 3 is a schematic diagram of another structure of a magnetically levitated brushless motor;

FIG. 4 is a schematic structural view of a rotor core;

FIG. 5 is another schematic view of a rotor core configuration;

FIG. 6 is a schematic view of yet another configuration of a rotor core;

fig. 7 is a schematic structural view of a stator core;

fig. 8 is a schematic view of the structure of the stator core.

Shown in the figure: 1. the motor comprises a shell, 2, a front cover, 3, a shaft branch, 4, a rear cover, 5, a first ball bearing, 6, a first wire frame, 7, a stator core, 8, a second wire frame, 9, magnetic steel, 10, a rotor core, 11, a second ball bearing, 12 and teeth.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-7, in the embodiment of the present invention, a magnetic suspension brushless motor includes a housing 1, a shaft 3 is vertically disposed inside the housing 1, and the shaft 3 rotates inside the housing 1, a rotor core 10 is sleeved on the shaft 3, and coaxial rotation is performed between the rotor core 10 and the shaft 3, the rotor core 10 is provided with a magnetic steel 9, and the magnetic steel 9 is uniformly or asymmetrically distributed at an outer end of the rotor core 10 according to a certain angle annular array by taking a radial center of the rotor core 10 as a center, the magnetic steel 9 is in a fan shape, and the magnetic steel 9 can be limited in number according to an overall structure of the rotor core 10, the stator core 7 is sleeved outside the rotor core 10, and the rotor core 10 rotates inside the stator core 7, and the shaft 3 rotates inside the stator core 7, teeth 12 are vertically formed on a side wall inside the stator core 7, and at least four teeth 12 are formed on a side wall of the stator core 7, and the teeth 12 are aligned with the magnetic steel 9.

The top of the stator core 7 is transversely provided with a first wire frame 6, the first wire frame 6 is sleeved on the shaft branch 3, the shaft branch 3 rotates inside the first wire frame 6, the bottom of the stator core 7 is transversely provided with a second wire frame 8, the second wire frame 8 is sleeved on the shaft branch 3, and the shaft branch 3 rotates inside the second wire frame 8.

The top of casing 1 transversely is provided with protecgulum 2, and axle branch 3 run through protecgulum 2 and rotate with protecgulum 2 is inside, the junction between axle branch 3 and protecgulum 2 is provided with first ball bearing 5, and axle branch 3 runs through first ball bearing 5 to axle branch 3 rotates in protecgulum 2 is inside through first ball bearing 5.

The bottom end of the machine shell 1 is transversely provided with a rear cover 4, the shaft branch 3 rotates on the rear cover 4, the joint between the shaft branch 3 and the rear cover 4 is arranged on a second ball bearing 11, the second ball bearing 11 is positioned on the rear cover 4, and the shaft branch 3 rotates on the rear cover 4 through the second ball bearing 11.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Claims

1. Magnetic suspension brushless motor, including the casing, its characterized in that, the inside vertical axle branch that is provided with of casing, and the axle branch rotates inside the casing, the axle branch cover is equipped with rotor core, and carries out coaxial rotation between rotor core and the axle branch, rotor core is provided with the magnet steel, and the magnet steel uses rotor core's radial centre of a circle as the even or asymmetric polar logarithm symmetry of certain angle ring array and all can distribute in the rotor core outer end as the center, the magnet steel is fan-shaped shape, and the magnet steel can carry out quantity according to rotor core overall structure and prescribe a limit to, the outside cover of rotor core is equipped with stator core, and rotor core rotates in stator core is inside to the axle branch rotates in stator core's inside, the inside lateral wall of stator core is vertical shaping respectively has tooth, and tooth is four at least to tooth aligns each other between respectively and the magnet steel.

2. The magnetically levitated brushless motor of claim 1, wherein the top end of the stator core is transversely disposed with a first bobbin, the first bobbin is sleeved on the shaft, and the shaft rotates inside the first bobbin, the bottom end of the stator core is transversely disposed with a second bobbin, the second bobbin is sleeved on the shaft, and the shaft rotates inside the second bobbin.

3. The magnetic suspension brushless motor of claim 1, wherein a front cover is transversely arranged at the top end of the housing, the shaft branches penetrate through the front cover and rotate with the inside of the front cover, a first ball bearing is arranged at the joint between the shaft branches and the front cover, and the shaft branches penetrate through the first ball bearing.

4. The magnetically levitated brushless motor of claim 1, wherein a rear cover is transversely disposed at a bottom end of the housing, and a shaft is rotatably disposed on the rear cover, and a connection between the shaft and the rear cover is disposed on a second ball bearing disposed on the rear cover.