CN213341775U

CN213341775U - Motor with large-angle quasi-radiation orientation arched permanent magnet

Info

Publication number: CN213341775U
Application number: CN202022308704.9U
Authority: CN
Inventors: 沈安国; 田小林
Original assignee: Western Magnet Co ltd
Current assignee: Western Magnet Co ltd
Priority date: 2020-10-16
Filing date: 2020-10-16
Publication date: 2021-06-01
Anticipated expiration: 2030-10-16

Abstract

The utility model discloses a motor with accurate radiation orientation arch permanent magnet of wide angle, including casing, stator and rotor, the stator comprises a plurality of magnetic pole magnet polarity alternate arrangement of premagnetization, the magnetic pole magnet is hunch shape, the connection face of magnetic pole magnet scribbles the adhesive, the utility model provides an accurate radiation orientation arch permanent magnet adopts the mode of concatenation in advance to splice well, its simple structure, greatly reduced the assembly degree of difficulty and magnetic field pulsation, accurate radiation orientation arch permanent magnet carries out the finish machining before assembling the motor simultaneously, improves the efficiency of assembly precision and motor.

Description

Motor with large-angle quasi-radiation orientation arched permanent magnet

Technical Field

The utility model relates to a technical field of motor, concretely relates to motor with accurate radiation orientation arch permanent magnet of wide angle.

Background

The permanent magnet has a difference between anisotropy and isotropy, the anisotropy is that an oriented magnetic field is applied to the magnetic powder for manufacturing the magnet when the material is molded, so that the easy magnetization axis of the magnetic powder is aligned along the oriented magnetic field direction, the isotropy is a non-oriented magnetic field when the material is molded, the magnetization of the anisotropic magnet can be performed only along the oriented direction, the isotropy can be performed in any direction, the remanence of the anisotropic magnet is close to twice of that of the isotropic magnet, and therefore, the anisotropic magnet made of the same material has much higher magnetic performance than the isotropic magnet.

The radial orientation is an orientation mode that the direction of magnetic force lines of the annular or arched magnet is normal, namely, the magnetic force lines are in a radial shape; the radial orientation magnet has wide application in the fields of motors and magnetic suspension bearings.

The existing motor mainly comprises a stator and a rotor, and the magnetic field generated by the stator acts on the current stress of a lead on the rotor so as to drive the motor to rotate, so that the working efficiency of the whole motor is determined by the strength of the magnetic field of the stator and the integrity of the stator.

However, the permanent magnets adopted by the stator in the existing motor are manufactured in a mode that parallel oriented magnets are cut into small-angle magnets, then the magnets are assembled on the motor in the same polarity mode, certain gaps are always reserved between two magnets during assembly due to the repulsive force between the magnets, pulsation of a magnetic field is increased, arc surfaces of a plurality of magnets are often staggered, namely, the arc surfaces are not located on the same arc surface, assembly accuracy is reduced, and meanwhile, the magnets are easily damaged due to collision during assembly, so that the working performance of the motor is poor.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a: the motor with the large-angle quasi-radiation orientation arched permanent magnets is provided, and the problems that the magnets are easy to misplace, the assembly precision is low, the magnets are easy to damage and the motor performance is poor when the radial orientation magnets are assembled in the stator of the existing motor are solved.

The technical scheme of the utility model as follows:

a motor with a large-angle quasi-radiation orientation arched permanent magnet comprises a shell, a stator and a rotor, wherein the stator is formed by alternately arranging a plurality of pre-magnetized magnetic pole magnets in polarity, the magnetic pole magnets are in an arched shape, and the connecting surfaces of the magnetic pole magnets are coated with adhesives.

Further, the pole magnets are cut from parallel oriented bulk magnets.

Further, the pole magnets are permanent magnets oriented in parallel.

Further, the adhesive is nocai glue or epoxy glue.

To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:

1. the utility model provides a motor with accurate radiation orientation arch permanent magnet of wide-angle, adopts before the motor installation, and the preinstallation is carried out in advance, constitutes the accurate radiation orientation arch permanent magnet of wide-angle and constitutes the stator by the alternative arrangement of a plurality of magnetic pole magnet polarities of premagnetizing, and two adjacent magnetic pole magnets can attract each other, are equivalent to and exert a pressure to the bonding agent, do benefit to and improve adhesive strength, have guaranteed the magnetic field stability of stator, have improved the efficiency of motor.

2. The motor with large-angle quasi-radiation orientation arched permanent magnet has adhesive coated on the connecting surface of the magnetic pole magnet, and this can raise the assembling precision greatly.

Drawings

FIG. 1 is a schematic structural view of a motor having a large angle quasi-radiational orientation arcuate permanent magnet;

FIG. 2 is a schematic view of a stator of an electric machine having large angle quasi-radiantly oriented arcuate permanent magnets;

fig. 3 is a schematic view of a pole magnet assembly of an electric machine having a large angle quasi-radial oriented arcuate permanent magnet.

Reference numerals: 1-stator, 2-rotor, 3-magnetic pole magnet, 4-assembly fixture.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention, i.e., the described embodiments are only some, but not all, of the embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

The features and properties of the present invention will be described in further detail with reference to the following examples.

Referring to fig. 1-3, a motor with a large-angle quasi-radial-orientation arched permanent magnet comprises a housing, a stator 1 and a rotor 2, wherein the stator 1 is formed by alternately arranging a plurality of pre-magnetized magnetic pole magnets 3 in polarity, the magnetic pole magnets 3 are in an arched shape, and the connecting surface of the magnetic pole magnets 3 is coated with an adhesive; the magnetic pole magnet 3 is formed by cutting a large magnet in parallel orientation; the pole magnets 3 are permanent magnets oriented in parallel; the adhesive is Notai adhesive or epoxy adhesive.

When manufacturing, firstly, a large magnet block which is oriented in parallel is cut into a magnetic pole magnet 3 which is in an arch shape with a small angle, and the angle of the magnetic pole magnet 3 is small enough that the magnetic pole magnet 3 can be equivalent to a radial orientation magnet from the design point of view.

The assembling jig 4 is made of a magnetic conductive material, and the outer arc surface of the assembling jig 4 serves as a reference surface for bonding the magnetic pole magnet 3.

The pole magnets 3 are pre-magnetized so that the pole magnets 3 exhibit permanent magnetic characteristics in order to have a certain attractive force between the pole magnets 3 or between the pole magnets 3 and the assembly jig 4.

Coating the side surface of one magnetic pole magnet 3 and the side surface of the other magnetic pole magnet 3 with opposite polarity with the noctay glue or the epoxy glue, then adsorbing the two surfaces coated with the noctay glue or the epoxy glue together, and repeating the step until all the required magnetic pole magnets 3 are adsorbed together.

The assembly fixture 4 is padded with an isolation layer, the magnetic pole magnet 3 which is completely bonded is adsorbed on the assembly fixture 4, then the end face of the magnetic pole magnet 3 is pressed and aligned, redundant adhesive on the surface of the magnet is removed, the magnet is cured according to the curing condition of the adhesive, the magnet is taken down from the assembly fixture 4 after the curing is finished, the magnet is wholly magnetized after polishing and finish machining are carried out as required, the quasi-radiation orientation arched permanent magnet is obtained, and finally the quasi-radiation orientation arched permanent magnet can be directly installed in a motor to serve as the stator 1 of the motor, the quasi-radiation orientation arched permanent magnet adopted by the stator 1, the assembly difficulty and the magnetic field pulsation are greatly reduced, meanwhile, the magnet can also be subjected to finish machining when being assembled to the motor, the assembly precision is improved.

Claims

1. The motor with the large-angle quasi-radiation-orientation arched permanent magnet comprises a shell, a stator (1) and a rotor (2), wherein the stator (1) is installed on the inner side of the shell, and the rotor (2) is arranged in the shell, and is characterized in that the stator (1) is formed by alternately arranging a plurality of pre-magnetized magnetic pole magnets (3) in polarity, the magnetic pole magnets (3) are in an arched shape, and the connecting surface of each magnetic pole magnet (3) is coated with an adhesive.

2. An electric machine with large angle quasi-radiatively oriented arched permanent magnets, according to claim 1, characterized in that the pole magnets (3) are cut from parallel oriented massive magnets.

3. A machine with large angle quasi-radiatively oriented arched permanent magnets, according to claim 1 or 2, characterized in that the pole magnets (3) are parallel oriented permanent magnets.

4. The electric machine of claim 1, wherein the adhesive is a noctay or epoxy adhesive.