CN214674594U - Miniature three-dimensional magnetic gathering disc type motor - Google Patents

Abstract

The utility model provides a miniature three-dimensional magnetic gathering disc type motor, which comprises a stator and a rotor, wherein the stator and the rotor are both in disc structures, and the stator comprises a stator core and an armature winding; its characterized in that, the rotor is including being located outer rotor core, being located a plurality of groups permanent magnet an that intermediate level and interval set up, being located the inlayer and corresponding the inlayer iron core that sets up with permanent magnet a, with the inlayer iron core from top to bottom the permanent magnet b that the coincidence set up and being located the permanent magnet c between the adjacent two sets of inlayer iron cores, the utility model discloses make full use of limit end excitation improves motor efficiency.

Description

Miniature three-dimensional magnetic gathering disc type motor

Technical Field

The utility model relates to an axial magnetic flux permanent-magnet machine field specifically is a miniature three-dimensional magnetic disk type motor that gathers.

Background

The axial flux motor has wide application prospect in the fields of numerical control machines, 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 existing miniature axial flux motor can be divided into four types according to the number of the stators and the rotors and the relative positions of the stators and the rotors: a single stator rotor structure, a double stator middle rotor structure, a double rotor middle stator structure and a multi-disc structure; although high power output in a limited space can be realized to a certain extent, it is difficult to further increase power density, which hinders the popularization and application of the axial motor in the industrial field.

The invention patent with Chinese patent application number 201810319634.1 discloses a novel magnetism-gathering disk type motor, which comprises a stator and a rotor; the stator comprises a stator iron core and an armature winding; the rotor comprises a three-layer structure, the outer layer comprises a plurality of outer layer permanent magnets and outer layer rotor cores which are alternately arranged, middle layer permanent magnets are arranged in positions, corresponding to the outer layer rotor cores, in the middle layers, the inner layer comprises inner layer rotor cores, the outer layer permanent magnets are magnetized in a tangential direction, the middle layer permanent magnets are magnetized in a radial direction, the magnetizing directions of the adjacent outer layer permanent magnets are opposite, the magnetizing directions of the adjacent middle layer permanent magnets are also opposite, the magnetizing directions of the two adjacent outer layer permanent magnets of the outer layer rotor cores and the magnetizing directions of the middle layer permanent magnets are outward or inward relative to the outer layer rotor cores, and the proportion of the outer layer permanent magnets to the outer layer perimeter is 0.1-0.55.

However, the problem of low power density and torque density of the motor in the invention enables the disk motor to realize large torque output under the condition of limited space structure.

SUMMERY OF THE UTILITY MODEL

The utility model aims at prior art's weak point, provide a miniature three-dimensional magnetic disk type motor that gathers, it is through setting up the rotor into outer in three-layer, reasonable installation iron core and permanent magnet, the excitation of make full use of limit end improves motor efficiency.

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

a miniature three-dimensional magnetic gathering disk type motor comprises a stator and a rotor, wherein the stator and the rotor are both in a disk type structure, and the stator comprises a stator core and an armature winding; the rotor is including being located outer rotor core, being located intermediate level and a plurality of groups permanent magnet a that the interval set up, be located the inlayer and with the corresponding inlayer core that sets up of permanent magnet a, with the upper and lower coincide of inlayer core sets up permanent magnet b and be located adjacent two sets of permanent magnet c between the inlayer core.

As an improvement, the armature windings are drum windings, and a plurality of groups of the armature windings are distributed along the circumferential direction of the stator core.

As an improvement, the rotor iron core is of a closed annular structure.

As an improvement, the permanent magnet a, the inner-layer iron core and the permanent magnet b are all fan-shaped; the permanent magnet c is strip-shaped.

As an improvement, the rotor further comprises a back plate connected with a plurality of groups of the permanent magnets b.

The beneficial effects of the utility model reside in that:

(1) the utility model can greatly improve the power density and the torque density of the disc motor by fully utilizing the side end excitation;

(2) the utility model has the advantages of light weight of a plurality of topological structures, high material utilization rate, outstanding heat dissipation performance, rich topological structures and wide motor structure selection range for specific application occasions;

(3) the utility model discloses the draw ratio of well equipment is little, and the space is compact, and is small, can satisfy under the special application scene to the miniaturization of motor, slim installation requirement.

To sum up, the utility model has the advantages of simple structure, design benefit and motor power density and torque density.

Drawings

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

FIG. 2 is a schematic view of a rotor structure;

FIG. 3 is a schematic view of a stator structure;

fig. 4 is a magnetic circuit diagram of the present invention.

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 3, a miniature three-dimensional concentrated magnetic disk type motor comprises a stator 1 and a rotor 2, wherein both the stator 1 and the rotor 2 are in disk type structures, and the stator 1 comprises a stator core 11 and an armature winding 12; the rotor 2 comprises a rotor core 21 positioned on the outer layer, a plurality of groups of permanent magnets a22 positioned on the middle layer and arranged at intervals, an inner layer core 23 positioned on the inner layer and arranged corresponding to the permanent magnets a22, permanent magnets b24 vertically matched with the inner layer core 23 and permanent magnets c25 positioned between the adjacent two groups of inner layer cores 23.

Further, the armature winding 12 is a drum winding, and a plurality of groups of the armature winding 12 are distributed along the circumferential direction of the stator core 11.

Further, the rotor core 21 has a closed ring structure.

Further, the permanent magnet a22, the inner-layer iron core 23 and the permanent magnet b24 are all fan-shaped; the permanent magnet c25 is in the shape of a bar.

Note that the permanent magnet a22 and the inner core 23 form a fan shape having a large volume.

Further, the rotor 2 further includes a back plate 26 connected to the plurality of groups of the permanent magnets b 24.

The magnetic circuit diagram of the present invention is shown in fig. 4, and the edge excitation can be sufficiently utilized.

The working steps are as follows:

the utility model provides a stator 1 includes stator core 11 and armature winding 12, rotor 2 is including being located outer rotor core 21, being located a plurality of groups permanent magnet a22 that intermediate level and interval set up, being located the inlayer and with permanent magnet a22 corresponds the inlayer iron core 23 that sets up, with inlayer iron core 23 is upper and lower the involution setting permanent magnet b24 and is located adjacent two sets of permanent magnet c25 between inlayer iron core 23.

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 (5)

1. A miniature three-dimensional magnetic gathering disk type motor comprises a stator (1) and a rotor (2), wherein both the stator (1) and the rotor (2) are of a disk type structure, and the stator (1) comprises a stator iron core (11) and an armature winding (12); the rotor (2) comprises a rotor core (21) positioned on the outer layer, a plurality of groups of permanent magnets a (22) positioned on the middle layer and arranged at intervals, an inner layer core (23) positioned on the inner layer and correspondingly arranged with the permanent magnets a (22), permanent magnets b (24) vertically arranged with the inner layer core (23) in a matched manner, and permanent magnets c (25) positioned between the adjacent two groups of inner layer cores (23).

2. The miniature three-dimensional flux-concentrating disk motor according to claim 1, wherein said armature windings (12) are drum windings, and several groups of said armature windings (12) are circumferentially distributed along said stator core (11).

3. The miniature three-dimensional concentrated disk motor according to claim 1, wherein the rotor core (21) is of a closed annular structure.

4. The miniature three-dimensional concentrated disk type motor according to claim 1, wherein the permanent magnet a (22), the inner layer iron core (23) and the permanent magnet b (24) are all in a fan shape; the permanent magnet c (25) is strip-shaped.

5. A miniature three-dimensional concentrated disk motor according to claim 1, wherein said rotor (2) further comprises a back plate (26) connected with several groups of said permanent magnets b (24).

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