CN214543843U

CN214543843U - Motor rotor structure

Info

Publication number: CN214543843U
Application number: CN202120505165.XU
Authority: CN
Inventors: 张豪凯; 喻峰; 缪立春
Original assignee: Deqing Sanxing Dynamo Electric Technology Co ltd
Current assignee: Deqing Sanxing Dynamo Electric Technology Co ltd
Priority date: 2021-03-10
Filing date: 2021-03-10
Publication date: 2021-10-29
Anticipated expiration: 2031-03-10

Abstract

The utility model discloses an electric motor rotor structure, including rotor body, rotor body includes magnetic shoe, yoke and spline, the yoke cover is on magnetic shoe's surface, the fixed plastic layer that is provided with on the surface of yoke, rotor body's side is provided with the cooling surface, be provided with a plurality of protruding muscle and a plurality of root concave muscle on the rotor cooling surface, protruding muscle and concave muscle interval distribution, and be provided with a louvre on the every protruding muscle at least, make rotor body's outside and inside formation air convection dispel the heat through the louvre. Above-mentioned technical scheme, structural design is reasonable, safe and reliable, heat dispersion is good, wind is made an uproar and is hanged down and the practicality is good.

Description

Motor rotor structure

Technical Field

The utility model relates to the technical field of electric machines, concretely relates to electric motor rotor structure.

Background

The motor rotor is divided into an inner rotor rotation mode and an outer rotor rotation mode. The inner rotor rotates in such a way that a core body in the middle of the motor is a rotating body to output torque or input energy. The outer rotor rotation mode is that the motor outer body is used as a rotating body, and different modes are convenient for application in various occasions.

The magnetic steel of the rotor of the outer rotor motor is generally in a tile structure, the outer circle surface of the magnetic steel is attached to the inner circle surface of the rotor body, and in order to prevent the magnetic steel from moving under the action of electromagnetic force, an adhesive is generally coated on the attachment surface of the magnetic steel and the rotor. However, due to the heat generated by the motor and the impact of the tangential force on the magnetic steel, after a long time of operation, the adhesive force may decrease due to aging, so that the magnetic steel may fall off, which brings great harm to the safe operation of the motor.

In addition, the existing rotor of the external rotor motor is unreasonable in structure arrangement, poor in heat dissipation performance, high in wind noise and poor in practicability.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims to provide a motor rotor structure that structural design is reasonable, safe and reliable, heat dispersion are good, wind is made an uproar low and the practicality is good.

In order to achieve the above purpose, the utility model provides a following technical scheme: the utility model provides an electric motor rotor structure, includes rotor body, rotor body includes magnetic shoe, yoke and spline, the yoke cover is on the surface of magnetic shoe, the fixed plastic layer that is provided with on the surface of yoke, rotor body's side is provided with the cooling surface, be provided with a plurality of protruding muscle and a plurality of concave muscle on the cooling surface, protruding muscle and concave muscle interval distribution, and be provided with a louvre on the every protruding muscle at least, make rotor body's outside and inside formation air convection dispel the heat through the louvre.

The utility model discloses further set up to: the spline, the magnetic shoe and the magnetic yoke are formed by integrally wrapping plastic layers.

The utility model discloses still further set up to: the plastic layer is made of PBT plastic material.

The utility model discloses still further set up to: the plurality of convex ribs and the plurality of concave ribs are uniformly distributed in an annular shape.

The utility model has the advantages that: compared with the prior art, the structure of the utility model is more reasonable, the spline, the magnetic shoe and the magnetic yoke are formed by plastic coating of the plastic layer, the magnetic steel can be effectively prevented from falling off due to the failure of the adhesive, and the utility model is safe and reliable; the structure of the convex ribs and the concave ribs rotates to accelerate air circulation, and the heat dissipation holes in the convex ribs can enable air convection to be formed between the outside and the inside of the rotor body, so that the heat dissipation effect of the motor is improved; the rotor has high strength, low wind noise and good heat dissipation effect, can prolong the service life of the motor and has good practicability.

The invention is further described with reference to the drawings and the specific embodiments.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention;

fig. 2 is a schematic cross-sectional view of an embodiment of the present invention.

Detailed Description

In the description of the present embodiment, it should be noted that, as the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "front", "rear", etc. appear, the indicated orientation or positional relationship thereof is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" as appearing herein are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Referring to fig. 1 and fig. 2, the utility model discloses an electric motor rotor structure, including rotor body, rotor body includes magnetic shoe 1, yoke 2 and

spline

4, 2 covers of yoke are on magnetic shoe 1's surface, the fixed plastic layer 3 that is provided with on yoke 2's the surface, rotor body's side is provided with cooling surface 11, be provided with a plurality of protruding muscle 111 and a plurality of concave muscle 112 on the cooling surface 11, protruding muscle 111 and concave muscle 112 interval distribution, and be provided with a louvre 113 on every protruding muscle 111 at least, make rotor body's outside and inside formation air convection dispel the heat through louvre 113.

Preferably, the spline 4, the magnetic shoe 1 and the magnetic yoke 2 are integrally formed by plastic coating through a plastic layer 3.

In order to make the structure of the present invention more reasonable, as preferred, the plastic layer 3 is made of PBT plastic material in this embodiment.

The plurality of convex ribs 111 and the plurality of concave ribs 112 are uniformly distributed in a ring shape. Preferably, the number of the convex ribs 111 and the concave ribs 112 is 3 or more.

In practical application, the spline, the magnetic shoe and the magnetic yoke are integrally formed by plastic coating through plastic layers, so that the magnetic steel can be effectively prevented from falling off due to failure of the adhesive, and the magnetic steel is safe and reliable; the structure of the convex ribs and the concave ribs rotates to accelerate air circulation, and the heat dissipation holes in the convex ribs can enable air convection to be formed between the outside and the inside of the rotor body, so that the heat dissipation effect of the motor is improved; the rotor has high strength, low wind noise and good heat dissipation effect, can prolong the service life of the motor and has good practicability.

The above embodiments are only used for further explanation of the present invention, and it is not understood that the present invention is limited by the protection scope of the present invention, and the technical engineers in the field are right according to the above contents of the present invention.

Claims

1. The utility model provides an electric motor rotor structure, includes rotor body, rotor body includes magnetic shoe (1), yoke (2) and spline (4), yoke (2) cover is on the surface of magnetic shoe (1), its characterized in that: the fixed plastic layer (3) that is provided with on the surface of yoke (2), the side of rotor body is provided with cooling surface (11), be provided with a plurality of protruding muscle (111) and a plurality of concave muscle (112) on cooling surface (11), protruding muscle (111) and concave muscle (112) interval distribution, and be provided with one louvre (113) on every protruding muscle (111) at least, make rotor body's outside and inside formation air convection dispel the heat through louvre (113).

2. A rotor structure of an electric machine according to claim 1, characterized in that: the spline (4), the magnetic shoe (1) and the magnetic yoke (2) are integrally formed by plastic coating of a plastic layer (3).

3. A rotor structure of an electric machine according to claim 2, characterized in that: the plastic layer (3) is made of PBT plastic material.

4. A rotor structure of an electric machine according to claim 1, characterized in that: the plurality of convex ribs (111) and the plurality of concave ribs (112) are uniformly distributed in a ring shape.