CN216530777U

CN216530777U - Outer rotor assembly and outer rotor motor using same

Info

Publication number: CN216530777U
Application number: CN202123329658.1U
Authority: CN
Inventors: 李发胜; 杨帆; 朱金成
Original assignee: Zhongshan Broad Ocean Motor Co Ltd
Current assignee: Zhongshan Broad Ocean Motor Co Ltd
Priority date: 2021-12-28
Filing date: 2021-12-28
Publication date: 2022-05-13
Anticipated expiration: 2031-12-28

Abstract

The utility model discloses an external rotor component and an external rotor motor using the same, which comprises a rotor shell, a plurality of magnetic shoes, a rotating shaft and a magnetic conduction ring, wherein the rotor shell comprises an end plate and a sleeve shell extending out from the edge of the end plate, a cavity is formed in the middle of the sleeve shell, and the sleeve shell is sleeved on the outer side surface of the magnetic conduction ring, and the external rotor motor is characterized in that: the rotor shell and the magnetic conduction ring are integrally cast, an upper step and a lower step are arranged on the inner side wall of the sleeve shell, two end faces of the magnetic conduction ring are respectively abutted to the upper step and the lower step, a plurality of magnetic shoes are circumferentially installed on the inner wall face of the magnetic conduction ring at intervals, and the rotor shell is an aluminum casting. Rotor housing is cast aluminium spare, and rotor housing light in weight arranges through increasing the magnetic conduction ring structure, can satisfy the demand intensity of motor, can the weight of effectual reduction complete machine, reduces the load of bearing, prolongs the life-span of motor, and rotor housing can also process into the shape that the structure is more complicated.

Description

Outer rotor assembly and outer rotor motor using same

The technical field is as follows:

the utility model relates to an outer rotor assembly and an outer rotor motor using the same.

Background art:

the existing external rotor motor comprises a stator component, an external rotor component, a rotating shaft and a base, wherein a sleeve seat extends downwards in the middle of the base, the rotating shaft is positioned in the sleeve seat and supported on bearings at two ends of the sleeve seat, the stator component is sleeved outside the sleeve seat, the rotating shaft is connected with the external rotor component, the external rotor component is nested outside the stator component, the external rotor component comprises a rotor shell and a plurality of permanent magnets, the rotor shell comprises an end plate and a sleeve shell extending out from the edge of the end plate, a cavity is formed in the middle of the sleeve shell, and the plurality of permanent magnets are circumferentially installed on the inner wall surface of the sleeve shell at intervals.

The existing rotor shell is formed by stretching steel, the whole rotor shell is made of steel, the weight is heavy, and the load of a bearing is influenced, so that the service life of a motor is influenced; and the stretching process cannot form excessively complex shapes.

The utility model content is as follows:

the utility model aims to provide an outer rotor assembly and an outer rotor motor using the same, which can solve the problem that the whole rotor shell in the prior art is made of steel, so that the weight is heavy, the load of a bearing is influenced, and the service life of the motor is influenced; and the stretching process can not form too complicated shape.

The purpose of the utility model is realized by the following technical scheme.

The utility model aims to provide an outer rotor component, which comprises a rotor shell, a plurality of magnetic shoes, a rotating shaft and a magnetic conduction ring, wherein the rotor shell comprises an end plate and a sleeve shell extending out from the edge of the end plate, a cavity is formed in the middle of the sleeve shell, and the sleeve shell is sleeved on the outer side surface of the magnetic conduction ring, and the outer rotor component is characterized in that: the rotor shell and the magnetic conduction ring are integrally cast, an upper step and a lower step are arranged on the inner side wall of the sleeve shell, two end faces of the magnetic conduction ring respectively abut against the upper step and the lower step, a plurality of magnetic shoes are circumferentially installed on the inner wall face of the magnetic conduction ring at intervals, and the rotor shell is an aluminum casting.

The middle of the end plate is provided with a shaft hole, a shaft sleeve is arranged in the shaft hole, and the rotating shaft is connected with the rotor shell through the shaft sleeve.

The opening of the sleeve shell extends outwards to form a flange, the bottom surface of the flange is protruded with a plurality of blades distributed at intervals in the circumferential direction, and an air channel is formed between every two adjacent blades.

The bottom surface of the flange is also provided with a plurality of convex edges which are distributed at intervals, a groove is formed between every two adjacent convex edges, and the plurality of fan blades are positioned on the periphery of the convex edges.

The flange is provided with a plurality of mounting holes.

The outer surface of the sleeve shell is provided with a plurality of heat dissipation ribs.

The magnetic conduction ring is made of No. 45 steel or high-magnetic-permeability material.

The shaft sleeve is made of No. 45 carbon steel material.

The utility model provides an external rotor electric machine, includes external rotor subassembly, base and stator module, and stator module installs at the base, and external rotor subassembly suit is outside stator module, its characterized in that: the outer rotor component is the outer rotor component.

Compared with the prior art, the utility model has the following effects:

1) the utility model provides an external rotor component, includes rotor housing, a plurality of magnetic shoe, pivot and magnetic ring, and rotor housing includes the end plate and follows the sleeve shell that the end plate edge extends out, forms the cavity in the middle of the sleeve shell, and the sleeve shell overlaps at magnetic ring lateral surface, its characterized in that: the rotor shell and the magnetic conduction ring are integrally cast, an upper step and a lower step are arranged on the inner side wall of the sleeve shell, two end faces of the magnetic conduction ring respectively abut against the upper step and the lower step, a plurality of magnetic shoes are circumferentially installed on the inner wall face of the magnetic conduction ring at intervals, and the rotor shell is an aluminum casting. The rotor shell is an aluminum casting, the weight of the rotor shell is light, the required strength of the motor can be met by adding the arrangement of the magnetic conduction ring structure, the weight of the whole machine can be effectively reduced, the load of a bearing is reduced, the service life of the motor is prolonged, and the rotor shell can be processed into a shape with a complex structure;

2) other advantages of the present invention are described in detail in the examples section.

Description of the drawings:

FIG. 1 is a perspective view of a first embodiment of the present invention;

FIG. 2 is another perspective view of the first embodiment of the present invention;

FIG. 3 is a front view of a first embodiment of the present invention;

FIG. 4 is a cross-sectional view A-A of FIG. 3;

FIG. 5 is a partial enlarged view of portion B of FIG. 4;

fig. 6 is a schematic view of the sleeve housing of the present invention with heat dissipating ribs added to the outer surface.

The specific implementation mode is as follows:

the present invention will be described in further detail below with reference to specific embodiments and with reference to the accompanying drawings.

The first embodiment is as follows:

as shown in fig. 1 to 5, the embodiment provides an outer rotor assembly, which includes a rotor casing 1, a plurality of magnetic tiles 2, a rotating shaft 3 and a magnetic ring 4, the rotor casing 1 includes an end plate 11 and a sleeve casing 12 extending from an edge of the end plate 11, a cavity 120 is formed in the middle of the sleeve casing 12, the sleeve casing 12 is sleeved on an outer side surface of the magnetic ring 4, and the outer rotor assembly is characterized in that: rotor housing 1 and magnetic ring 4 are integrative casting and take shape, be equipped with upper ledge 128 and lower step 121 on the inside wall of sleeve shell 12, the both ends face of magnetic ring 4 supports respectively on upper ledge 128 and lower step 121, install on the internal wall of magnetic ring 4 at a plurality of magnetic shoe 2 circumference interval, rotor housing 1 is cast aluminium spare, rotor housing light in weight, arrange through increasing the magnetic ring structure, can satisfy the demand intensity of motor, can the effectual weight that reduces the complete machine, reduce the load of bearing, the life-span of extension motor, rotor housing can also process into the more complicated shape of structure.

The middle of the end plate 11 is provided with a shaft hole 111, a shaft sleeve 13 is installed in the shaft hole 111, and the rotating shaft 13 is connected with the rotor housing 1 through the shaft sleeve 13.

A flange 122 extends outwards from the opening of the sleeve housing 12, a plurality of blades 123 distributed circumferentially at intervals are protruded from the bottom surface of the flange 122, and an air duct 124 is formed between adjacent blades 123, so that the blades can generate air flow to accelerate heat dissipation.

The bottom surface of the flange 122 is further protruded with a plurality of convex edges 125 distributed at intervals, a groove 126 is formed between the adjacent convex edges 125, the plurality of fan blades 123 are located at the periphery of the convex edges 125, and the arrangement of the convex edge structure enables the rotor housing to be free from adding sealing structure accessories, so that the sealing performance of the motor is ensured.

The flange 122 is provided with a plurality of mounting holes 127, so that the flange is convenient to mount with a load, and the structural arrangement is reasonable.

As shown in fig. 6, a plurality of heat dissipating ribs 129 may be further disposed on the outer surface of the sleeve housing 12 to improve the heat dissipating effect of the rotor housing 1. Only 2 heat dissipating ribs 129 are shown, but the heat dissipating ribs 129 are evenly distributed on the outer surface of the sleeve housing 12 at intervals along the circumferential direction.

The magnetic conductive ring 4 is made of No. 45 steel or high-magnetic-permeability material.

The sleeve 13 is made of a No. 45 carbon steel material.

Example two:

the utility model provides an external rotor electric machine, includes external rotor subassembly, base and stator module, and stator module installs at the base, and external rotor subassembly suit is outside stator module, its characterized in that: the outer rotor assembly is the outer rotor assembly described in the first embodiment.

The above embodiments are only preferred embodiments of the present invention, but the present invention is not limited thereto, and any other changes, modifications, substitutions, combinations, simplifications, which are made without departing from the spirit and principle of the present invention, are all equivalent replacements within the protection scope of the present invention.

Claims

1. The utility model provides an outer rotor assembly, includes rotor housing (1), a plurality of magnetic shoe (2), pivot (3) and magnetic ring (4), and rotor housing (1) includes end plate (11) and sleeve shell (12) that extend out from end plate (11) edge, and vacuole formation (120) in the middle of sleeve shell (12), sleeve shell (12) cover are in magnetic ring (4) lateral surface, its characterized in that: rotor housing (1) and magnetic ring (4) are integrative casting shaping, are equipped with upper step (128) and lower step (121) on the inside wall of sleeve shell (12), and the both ends face of magnetic ring (4) supports respectively on upper step (128) and lower step (121), and a plurality of magnetic shoe (2) circumference interval ground is installed on the internal wall face of magnetic ring (4), and rotor housing (1) is the cast aluminium spare.

2. The external rotor assembly of claim 1, wherein: the middle of the end plate (11) is provided with a shaft hole (111), a shaft sleeve (13) is arranged in the shaft hole (111), and the rotating shaft (3) is connected with the rotor shell (1) through the shaft sleeve (13).

3. An external rotor assembly according to claim 1 or 2, wherein: a flange (122) extends outwards from an opening of the sleeve shell (12), a plurality of fan blades (123) distributed at intervals in the circumferential direction protrude from the bottom surface of the flange (122), and an air duct (124) is formed between every two adjacent fan blades (123).

4. The external rotor assembly of claim 3, wherein: the bottom surface of the flange (122) is also provided with a plurality of convex edges (125) which are distributed at intervals in the radial direction, a groove (126) is formed between the adjacent convex edges (125), and a plurality of fan blades (123) are positioned on the periphery of the convex edges (125).

5. The external rotor assembly of claim 4, wherein: the flange (122) is provided with a plurality of mounting holes (127).

6. The external rotor assembly of claim 5, wherein: the outer surface of the sleeve shell (12) is provided with a plurality of heat dissipation ribs (129).

7. The external rotor assembly of claim 6, wherein: the magnetic conductive ring (4) is made of No. 45 steel or high magnetic conductivity material.

8. The external rotor assembly of claim 7, wherein: the shaft sleeve (13) is made of No. 45 carbon steel material.

9. The utility model provides an external rotor electric machine, includes external rotor subassembly, base and stator module, and stator module installs at the base, and external rotor subassembly suit is outside stator module, its characterized in that: the external rotor assembly is the external rotor assembly according to any one of claims 1 to 8.