CN211151650U

CN211151650U - Outer rotor with polygonal sectional type oblique pole structure

Info

Publication number: CN211151650U
Application number: CN202020197659.1U
Authority: CN
Inventors: 闫玉刚; 冯韵娇
Original assignee: Dalian Guanli Motor Technology Co ltd
Current assignee: Dalian Guanli Motor Technology Co ltd
Priority date: 2020-02-24
Filing date: 2020-02-24
Publication date: 2020-07-31
Anticipated expiration: 2030-02-24

Abstract

The outer rotor comprises an outer rotor shell, wherein an inner polygonal hole is formed in the outer rotor shell, an outer rotor iron core unit is arranged in the inner polygonal hole, an even number of magnetic steel grooves are uniformly distributed on the outer rotor iron core unit along the circumference, permanent magnets are arranged in the magnetic steel grooves, two adjacent outer rotor iron core units are sequentially arranged in a staggered mode in the radial direction, and the rotation angles of the symmetrically distributed outer rotor iron core unit sections on two sides are opposite. The utility model discloses an outer rotor polygon sectional type down tube has reduced the ripple torque that tooth's socket torque that arouses and back electromotive force harmonic wave arouse by the change of stator core reluctance in the motor, has improved the stationarity of motor operation, has reduced the noise in service of motor.

Description

Outer rotor with polygonal sectional type oblique pole structure

Technical Field

The utility model belongs to the motor field especially relates to an external rotor with polygon sectional type slant pole structure.

Background

The outer rotor motor generally adopts a stator skewed pole mode to reduce the cogging torque of the motor so as to reduce the noise and vibration of the motor during operation, and the manufacturing process is complex, the precision is low, and the automatic production is difficult to realize. In addition, due to the influence of the length of the outer rotor iron core, the magnetic steel is difficult to embed, the problems of wrong insertion and missing insertion are easy to occur, the qualified rate of products is difficult to guarantee, the production efficiency is low, and the manufacturing cost is high.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome above not enough, provide an outer rotor with polygon sectional type slant pole structure, reduced the ripple torque that tooth's socket torque that the reluctance change arouses and back emf harmonic arouse by the interior stator core reluctance of motor through outer rotor polygon sectional type slant pole, improved the stationarity of motor operation, reduced the noise in utilization of motor.

The utility model adopts the following technical scheme:

an outer rotor with a polygonal sectional type oblique pole structure comprises an outer rotor shell, wherein an inner polygonal hole is formed in the outer rotor shell, an outer rotor iron core unit is arranged in the inner polygonal hole and is annular, the outer ring of the outer rotor iron core unit is a polygon matched with the inner polygon hole, the inner ring is a circle, an even number of magnetic steel grooves are uniformly distributed on the outer rotor iron core unit along the circumference, permanent magnets are arranged in the magnetic steel grooves, the adjacent permanent magnets have opposite polarities, the outer rotor iron core units are arranged in the outer rotor shell in multiple groups, two adjacent outer rotor iron core units are sequentially arranged in a staggered angle mode in the radial direction, the staggered angle is the angle from a polygon to the center rotation angle of the adjacent edges, the outer rotor iron core units are integrally distributed along the center line in a bilateral symmetry mode, and the rotation angles of the outer rotor iron core unit sections on two sides of the symmetrical distribution are opposite.

Furthermore, an inner clamping ring groove is formed in the outer rotor shell, a hole elastic check ring is arranged in the inner clamping ring groove, a balance plate is arranged at the end part of the outer rotor iron core unit, and the outer end of the balance plate is fixed through the hole elastic check ring.

Furthermore, the number of the outer polygonal sides of the outer rotor iron core unit is an even number of 8-60, and the permanent magnets distributed on the periphery of the outer rotor iron core unit are correspondingly arranged on each side.

Further, an outer rotor shell marking groove is formed in the outer portion of the outer rotor shell.

Furthermore, an outer rotor core unit marking groove is formed in the outer rotor core unit.

The utility model has the advantages that:

the utility model discloses an outer rotor polygon sectional type down tube has reduced the ripple torque that tooth's socket torque that arouses and back electromotive force harmonic wave arouse by the change of stator core reluctance in the motor, has improved the stationarity of motor operation, has reduced the noise in service of motor.

Drawings

FIG. 1 is a schematic front view of the assembly body of the present invention;

FIG. 2 is a schematic side view of the assembly of the present invention;

FIG. 3 is a front view of the outer rotor housing;

FIG. 4 is a side view of the outer rotor casing;

fig. 5 is a schematic side view of the outer rotor core unit;

fig. 6 is a schematic front view of the outer rotor core unit.

In the figure: the rotor comprises an outer rotor shell 1, an elastic retainer ring for holes 2, a polygonal outer rotor iron core A section 3, a polygonal outer rotor iron core B section 4, a balance plate 5, a permanent magnet 6, a preset angle 7, an inner retainer ring groove 8, an inner polygonal hole 9, an outer rotor shell marking groove 10, an outer rotor iron core unit outer polygon 11, a magnetic steel groove 12, an outer rotor iron core unit marking groove 13 and an outer rotor punching sheet 14.

Detailed Description

The present invention will be further explained with reference to the drawings and the embodiments.

The utility model provides an outer rotor polygon sectional type slant polar structure, including outer rotor housing, polygon outer rotor core, permanent magnet, balancing plate and circlip for the hole, polygon outer rotor core comprises A, B iron core section symmetry, and every iron core section sets up a plurality of iron core units along the axle center, and the circumference is provided with even number evenly distributed's magnetic pole in every iron core unit, and adjacent iron core unit is rotatory preset angle α with the magnetic pole in proper order, and this angle is unanimous with the outer polygon distribution angle of iron core, and A, B iron core section rotation angle is opposite, through outer rotor housing polygon hole, A, B iron core section symmetric distribution is realized to balancing plate and circlip for the hole, and adjacent iron core unit magnetic pole radially staggers angular positioning and axial in proper order and closes tightly.

Example 1

An outer rotor with a polygonal sectional type oblique pole structure comprises an outer rotor shell 1, wherein a regular decagonal hole is formed in the outer rotor shell 1, the regular decagonal hole is internally provided with an outer rotor iron core unit which is annular, the outer ring is regular decagon, the inner ring is circular, ten magnetic steel grooves 12 are uniformly distributed on the outer rotor iron core unit along the circumference and are respectively positioned in the middle of each side, permanent magnets 6 are arranged in the magnetic steel grooves 12, the polarities of the adjacent permanent magnets 6 are opposite, the outer rotor iron core units are arranged in the outer rotor shell 1 in multiple groups, two adjacent outer rotor iron core units are sequentially arranged in a staggered mode in the radial direction at an angle from a polygonal angle to the center of an adjacent edge in a rotating mode, the outer rotor iron core units are integrally distributed along the center line in a bilateral symmetry mode, and the rotation angles of the outer rotor iron core unit sections on two sides of the symmetrical distribution are opposite.

The inner polygonal hole of the outer rotor shell does not rotate along with the outer rotor shell, is a vertical hole, and realizes the oblique pole through the rotary assembly of the outer rotor iron core unit.

An inner clamping ring groove 8 is formed in the outer rotor shell 1, a hole elastic retaining ring 2 is arranged in the inner clamping ring groove, a balance plate 5 is arranged at the end of the outer rotor iron core unit, and the outer end of the balance plate 5 is fixed through the hole elastic retaining ring 2.

An outer rotor housing marking groove 10 is arranged outside the outer rotor housing 1.

And an outer rotor iron core unit marking groove 13 is formed in the outer rotor iron core unit.

The marking groove 13 is in the prior art, has an asymmetric structure relative to the sheet type and the inner hole of the shell, and is used for assembling and marking the code sheet, the embedded magnetic steel pole and the iron core unit, thereby preventing errors.

Claims

1. The utility model provides an outer rotor with polygon sectional type slant pole structure which characterized in that: the rotor comprises an outer rotor shell (1), wherein an inner polygonal hole (9) is formed in the outer rotor shell (1), outer rotor iron core units are arranged in the inner polygonal hole (9), the outer rotor iron core units are annular, the outer rings of the outer rotor iron core units are outer polygons (11) matched with the inner polygonal hole (9), the inner rings of the outer rotor iron core units are circular, an even number of magnetic steel grooves (12) are uniformly distributed on the outer rotor iron core units along the circumference, permanent magnets (6) are arranged in the magnetic steel grooves (12), the polarities of adjacent permanent magnets (6) are opposite, a plurality of groups of outer rotor iron core units are arranged in the outer rotor shell (1), two adjacent outer rotor iron core units are sequentially arranged in a staggered mode in the radial direction, the staggered angle is a rotation angle from a polygonal angle to the center of an adjacent edge, and the outer rotor iron core, the rotation angles of the symmetrically distributed two sides of the outer rotor iron core unit sections are opposite.

2. The external rotor with a polygonal segmented skewed pole structure of claim 1, wherein: an inner clamping ring groove (8) is formed in the outer rotor shell (1), a hole elastic retaining ring (2) is arranged in the inner clamping ring groove, a balance plate (5) is arranged at the end of the outer rotor iron core unit, and the outer end of the balance plate (5) is fixed through the hole elastic retaining ring (2).

3. The external rotor with a polygonal segmented skewed pole structure of claim 1, wherein: the number of the sides of the outer polygon (11) of the outer rotor iron core unit is an even number of 8-60, and permanent magnets distributed on the periphery of the outer rotor iron core unit are correspondingly arranged on each side.

4. The external rotor with a polygonal segmented skewed pole structure of claim 1, wherein: an outer rotor shell marking groove (10) is formed in the outer portion of the outer rotor shell (1).

5. The external rotor with a polygonal segmented skewed pole structure of claim 1, wherein: and the outer rotor iron core unit is provided with an outer rotor iron core unit marking groove (13).