CN214674580U

CN214674580U - Mechanical supporting structure suitable for miniature axial magnetic field motor

Info

Publication number: CN214674580U
Application number: CN202120540864.8U
Authority: CN
Inventors: 王晓璨
Original assignee: Huzhou Xiaowei Technology Co ltd
Current assignee: Huzhou Xiaowei Technology Co ltd
Priority date: 2021-03-16
Filing date: 2021-03-16
Publication date: 2021-11-09
Anticipated expiration: 2031-03-16

Abstract

The utility model provides a mechanical support structure suitable for a miniature axial magnetic field motor, which comprises a shell for accommodating a stator, a rotor and a rotating shaft; the rotor and the rotating shaft are respectively connected with the shell in a rotating way through a bearing a and a bearing b; and the rotor and the rotating shaft rotate synchronously; the utility model discloses compressible miniature axial flux motor's axial length, and then satisfied the miniaturization of special application scene down to the motor, slim installation requirement.

Description

Mechanical supporting structure suitable for miniature axial magnetic field motor

Technical Field

The utility model relates to an axial magnetic flux permanent-magnet machine field specifically is a mechanical bearing structure suitable for miniature axial magnetic field motor.

Background

The axial flux motor has wide application prospect in the fields of numerical control machine tools, industrial robots, seat ventilation motors and the like due to the advantages of shorter axial effective length, higher power density, lighter weight and the like.

The cross-sectional view of the existing miniature axial flux motor is shown in fig. 5, and the motor mainly comprises a shell b with a ball bearing a, a rotor c, an output shaft d, a permanent magnet e, a winding f, a back iron g and an end cover h with the ball bearing a, wherein the winding and the back iron form a stator assembly, the permanent magnet, the rotor and the shaft form a rotor assembly, and the rotor assembly is connected with the shell, the end cover and other mechanical support structures through the two ball bearings with the same specification. The motor shell with the structure needs to reserve a cavity for installing the ball bearing, the axial effective length cannot be further compressed, and the structural characteristic limits the application of the motor shell in a thin installation occasion.

SUMMERY OF THE UTILITY MODEL

The utility model aims at prior art's weak point, provide a mechanical support structure suitable for miniature axial magnetic field motor, through changing the axial length of one of them bearing specification and the miniature axial flux motor of this bearing mounted position compressible, and then satisfied the miniaturization, the slimming installation requirement to the motor under the special application scene.

In order to achieve the above object, the utility model provides a following technical scheme:

a mechanical support structure suitable for a miniature axial magnetic field motor comprises a shell for accommodating a stator, a rotor and a rotating shaft; the rotor and the rotating shaft are respectively connected with the shell in a rotating way through a bearing a and a bearing b; and the rotor rotates synchronously with the rotating shaft; the stator and the rotor are both disc structures.

As a refinement, the housing is provided in the form of a cylinder.

As an improvement, the bottom of the shell is provided with a mounting seat, and a mounting platform a for accommodating the bearing b is arranged on the mounting seat.

As an improvement, an opening of the shell is provided with an installation platform b for accommodating the bearing a.

As an improvement, the stator comprises a back iron arranged at the bottom of the mounting seat and sleeved on the mounting seat and a plurality of groups of coil windings arranged above the back iron.

As a refinement, the coil windings are arranged in a sector shape.

As an improvement, the rotor comprises a rotor body coaxially installed in the bearing a and fixedly connected with the rotating shaft, and a plurality of groups of permanent magnets fixed below the rotor body.

As a modification, the permanent magnet is arranged in a fan shape.

The beneficial effects of the utility model reside in that:

(1) the utility model has the advantages that the bearing a is rotationally connected with the rotor and the shell, the axial length of the miniature axial flux motor can be compressed, and the requirements for the miniaturization and thinning installation of the motor under special application scenes are met;

(2) the utility model can effectively reduce the original unbalance of the rotor formed after the motor is assembled by the staggered arrangement of the bearing a and the bearing b, thereby reducing the vibration and the noise of the motor, reducing the abrasion of the bearing and prolonging the service life of the motor;

(3) the utility model discloses a this structure can guarantee that all axial flux formula motors form even air gap, guarantees motor magnetic circuit symmetry, reduces the unilateral magnetism pulling force of motor.

To sum up, the utility model has the advantages of simple structure, design benefit and axial length are little.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

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

FIG. 3 is a schematic view of the explosion structure of the present invention;

FIG. 4 is an enlarged view taken at A in FIG. 3;

fig. 5 is a sectional structure view of the prior art.

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. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

Example (b):

as shown in fig. 1 to 4, a mechanical support structure for a micro axial field motor includes a housing 4 accommodating a stator 1, a rotor 2, and a rotating shaft 3; the rotor 2 and the rotating shaft 3 are respectively connected with the shell 4 in a rotating way through a bearing a5 and a bearing b 6; and the rotor 2 rotates synchronously with the rotating shaft 3; the stator 1 and the rotor 2 are both of a disc structure.

Further, the housing 4 is provided in a cylindrical shape.

Furthermore, the bottom of the housing 4 is provided with a mounting seat 41, and a mounting table a42 for accommodating the bearing b6 is opened on the mounting seat 41.

The bearing b6 is installed in the mounting table a42, and the rotating shaft 3 is inserted in the bearing b 6.

Further, the stator 1 includes a plurality of coil windings 12 that are arranged at the bottom of the mounting seat 41 and sleeved on the back iron 11 on the mounting seat 41 and above the back iron 11.

Further, the coil winding 12 is provided in a fan shape.

Further, an opening of the housing 4 is opened with a mounting stand b43 for accommodating the bearing a 5.

Further, the rotor 2 includes a rotor body 21 coaxially installed in the bearing a5 and fixedly connected to the rotating shaft 3, and several groups of permanent magnets 22 fixed below the rotor body 21.

The rotor body 21 and the plurality of groups of permanent magnets 22 are all arranged inside the bearing a5, and the installation mode can reduce the axial length of the motor so as to meet the requirements of miniaturization and thinning of the motor under special application scenes.

Further, the permanent magnet 22 is provided in a fan shape.

It should be noted that, the staggered arrangement of the bearing a5 and the bearing b6 can effectively reduce the original unbalance amount of the rotor 2 formed after the motor is assembled, thereby reducing the vibration and noise of the motor, reducing the wear of the bearings, and prolonging the service life of the motor.

It is worth mentioning that the structure can ensure that the circumferential direction flux motor forms a uniform air gap, ensure the symmetry of the motor magnetic circuit and reduce the unilateral magnetic pull force of the motor.

The working steps are as follows:

the utility model discloses in bearing b6 place in pivot 3 with between the shell 4, bearing a5 place in rotor 2 with between the shell 4.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. A mechanical support structure suitable for a miniature axial magnetic field motor is characterized by comprising a shell (4) for accommodating a stator (1), a rotor (2) and a rotating shaft (3); the rotor (2) and the rotating shaft (3) are respectively connected with the shell (4) in a rotating way through a bearing a (5) and a bearing b (6); and the rotor (2) rotates synchronously with the rotating shaft (3); the stator (1) and the rotor (2) are both of a disc structure.

2. A mechanical support structure for miniature axial field machines according to claim 1, wherein said housing (4) is provided in the form of a cylinder.

3. The mechanical support structure suitable for the micro axial magnetic field motor according to claim 2, wherein a mounting seat (41) is provided at the bottom of the housing (4), and a mounting platform a (42) for accommodating the bearing b (6) is provided on the mounting seat (41).

4. The mechanical support structure suitable for the micro axial magnetic field motor according to claim 2, wherein the opening of the housing (4) is provided with a mounting platform b (43) for accommodating the bearing a (5).

5. The mechanical support structure for the miniature axial magnetic field motor according to claim 3, wherein the stator (1) comprises a back iron (11) arranged at the bottom of the mounting seat (41) and sleeved on the mounting seat (41) and a plurality of groups of coil windings (12) arranged above the back iron (11).

6. A mechanical support structure for miniature axial field machines according to claim 5, wherein said coil windings (12) are arranged in a fan shape.

7. The mechanical support structure for a miniature axial field machine according to claim 1, wherein said rotor (2) comprises a rotor body (21) coaxially mounted in said bearing a (5) and fixedly connected to said rotating shaft (3), and several groups of permanent magnets (22) fixed under said rotor body (21).

8. A mechanical support structure suitable for miniature axial field machines according to claim 7 wherein said permanent magnets (22) are arranged in a fan shape.