CN218161941U

CN218161941U - Outer rotor brushless motor stator core and fixing support riveting structure

Info

Publication number: CN218161941U
Application number: CN202221978256.6U
Authority: CN
Inventors: 刘德广; 龙兴波
Original assignee: Hunan Guomeng Technology Co ltd
Current assignee: Hunan Guomeng Technology Co ltd
Priority date: 2022-07-29
Filing date: 2022-07-29
Publication date: 2022-12-27
Anticipated expiration: 2032-07-29

Abstract

The utility model discloses an external rotor brushless motor stator core and fixing support riveting structure relates to external rotor brushless motor technical field. The utility model comprises a bottom plate, a fixed support is arranged on the bottom plate, a first bearing chamber is arranged at the upper end of the fixed support, and an arc angle is arranged on the outer ring of the upper part of the fixed support, which is positioned on the first bearing chamber part; the fixed support is sleeved with a stator core, and the fixed support is in interference fit with the stator core. The utility model discloses an outer lane that fixing support upper portion is located first bearing chamber portion is equipped with the arc angle, when assembling with stator core, because fixing support and stator core adopt the interference design, when stator core impresses fixing support, the interior circle of fixing support's first bearing chamber can not produce slight deformation, and during fixing support's first bearing chamber was gone into in the first bearing, it was smooth and easy, improvement production efficiency.

Description

Outer rotor brushless motor stator core and fixing support riveting structure

Technical Field

The utility model belongs to the technical field of external rotor brushless motor, especially, relate to an external rotor brushless motor stator core and fixing support riveting structure.

Background

Compared with the structure of an inner rotor motor, the outer rotor motor has certain advantages in the aspects of noise, rotational inertia, enameled wire cost and the like, and in addition, the outer rotor motor also has the advantages of high power density, compact structure, long service life, safety, reliability and the like, so that the outer rotor motor is applied by more and more manufacturers.

However, when the excircle of the existing fixed support and the stator core are assembled, because the fixed support and the stator core adopt an interference design, when the stator core is pressed into the fixed support, the inner circle of a bearing chamber of the fixed support can slightly deform, and the bearing is assembled in the bearing chamber of the fixed support, so that the assembly is eccentric.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an external rotor brushless motor stator core and fixing support riveting structure, when having solved current fixing support excircle and stator core assembly, because fixing support and stator core adopt the interference design, when stator core impresses fixing support, the interior circle of fixing support bearing room then can produce slight deformation, during the bearing was packed into the fixing support bearing room, the technical problem of assembly tension-bias.

In order to achieve the purpose, the utility model is realized by the following technical proposal:

a riveting structure of an outer rotor brushless motor stator core and a fixed support comprises a bottom plate, wherein the bottom plate is provided with the fixed support, the upper end of the fixed support is provided with a first bearing chamber, and an arc angle is arranged on the outer ring of the upper part of the fixed support, which is positioned on the first bearing chamber part;

the fixed support is sleeved with a stator core, and the fixed support is in interference fit with the stator core.

Optionally, a connecting seat sleeved at the lower part of the fixed support is fixed on the bottom plate.

Optionally, a rotor is rotationally matched in the fixed support, and a first bearing fixed in the first bearing chamber is fixedly sleeved on the rotor.

Optionally, a housing is fixed on the rotor, and a magnetic ring coaxial with the housing is fixed on the inner wall of the housing.

Optionally, a second bearing chamber is arranged at the bottom of the fixed support, and a second bearing fixedly sleeved on the rotor is fixed in the second bearing chamber.

Optionally, the fixed support is a cylindrical structure, and the diameters of the inner walls of the first bearing and the second bearing are smaller than the diameter of the inner wall of the rotor.

The embodiment of the utility model has the following beneficial effect:

the utility model discloses an embodiment is located the outer lane of first bearing chamber portion through fixing support upper portion and is equipped with the arc angle, when assembling with stator core, because fixing support and stator core adopt the interference design, when stator core impresses fixing support, the interior circle of fixing support's first bearing chamber can not produce slight deformation, and during fixing support's first bearing chamber was gone into in the first bearing, it was smooth and easy, improvement production efficiency.

Of course, it is not necessary for any particular product to achieve all of the above-described advantages at the same time.

Drawings

The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic perspective view of an embodiment of the present invention;

fig. 2 is an exploded view of an embodiment of the present invention;

fig. 3 is a sectional view of a fixing support according to an embodiment of the present invention.

Wherein the figures include the following reference numerals:

bottom plate 1, fixing support 2, first bearing chamber 3, stator core 4, connecting seat 5, rotor 6, first bearing 7, shell 8, arc angle 9, second bearing chamber 10, second bearing 11.

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. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.

To maintain the following description of the embodiments of the present invention clear and concise, detailed descriptions of well-known functions and components may be omitted.

Referring to fig. 1-3, in the present embodiment, a riveting structure for a stator core and a fixing support of an outer rotor brushless motor is provided, including: the bearing device comprises a bottom plate 1, wherein a fixed support 2 is arranged on the bottom plate 1, a first bearing chamber 3 is arranged at the upper end of the fixed support 2, and an arc angle 9 is arranged on the outer ring of the part, positioned in the first bearing chamber 3, of the upper part of the fixed support 2;

the fixed support 2 is sleeved with a stator core 4, and the fixed support 2 is in interference fit with the stator core 4.

The outer lane that is located 3 parts in first bearing chamber through 2 upper portions of fixing support is equipped with circular arc angle 9, when 4 assembly with stator core, because fixing support 2 and stator core 4 adopt the interference design, when stator core 4 impresses fixing support 2, the interior circle of fixing support 2's first bearing chamber 3 can not produce slight deformation, and first bearing 7 is packed into in fixing support 2's first bearing chamber 3, and is smooth and easy, improves production efficiency.

Be fixed with on the bottom plate 1 of this embodiment and establish connecting seat 5 in 2 lower parts of fixing support, 2 normal running fit in fixing support has rotor 6, the fixed cover is equipped with the first bearing 7 of fixing at first bearing room 3 on rotor 6, be fixed with shell 8 on the rotor 6, the 8 inner walls of shell are fixed with the magnetic ring rather than the coaxial line, 2 bottoms of fixing support are equipped with second bearing room 10, and second bearing room 10 internal fixation has the fixed cover to establish second bearing 11 on rotor 6, fixing support 2 is barrel form structure, and first bearing 7, the inner wall diameter of second bearing 11 is less than rotor 6's inner wall diameter, be convenient for

rotor

6 and 8 synchronous stable rotations of shell.

The above embodiments may be combined with each other.

The present invention is not limited to the above embodiments, and any person should learn the structural changes made under the teaching of the present invention, all fall within the protection scope of the present invention.

The technology, shape and construction parts which are not described in detail in the present invention are known technology.

Claims

1. The utility model provides an outer rotor brushless motor stator core and fixing support riveting structure which characterized in that includes: the bearing device comprises a base plate (1), wherein a fixed support (2) is arranged on the base plate (1), a first bearing chamber (3) is arranged at the upper end of the fixed support (2), and an arc angle (9) is arranged on the outer ring of the part, located in the first bearing chamber (3), of the upper part of the fixed support (2);

the fixed support (2) is sleeved with a stator core (4), and the fixed support (2) is in interference fit with the stator core (4).

2. The external rotor brushless motor stator core and fixing support riveting structure according to claim 1, characterized in that the bottom plate (1) is fixed with a connecting seat (5) sleeved on the lower portion of the fixing support (2).

3. The external rotor brushless motor stator core and fixing support riveting structure according to claim 2, characterized in that a rotor (6) is rotationally fitted in the fixing support (2), and the rotor (6) is fixedly sleeved with a first bearing (7) fixed in the first bearing chamber (3).

4. The riveting structure of the stator core and the fixing support of the external rotor brushless motor according to claim 3, wherein the rotor (6) is fixed with a shell (8), and the inner wall of the shell (8) is fixed with a magnetic ring coaxial with the shell.

5. The riveting structure of the stator core and the fixed support of the external rotor brushless motor according to claim 4, wherein the bottom of the fixed support (2) is provided with a second bearing chamber (10), and a second bearing (11) fixedly sleeved on the rotor (6) is fixed in the second bearing chamber (10).

6. The riveting structure of the stator core and the fixing support of the external rotor brushless motor according to claim 5, characterized in that the fixing support (2) is a cylindrical structure, and the diameters of the inner walls of the first bearing (7) and the second bearing (11) are smaller than the diameter of the inner wall of the rotor (6).