CN218387004U

CN218387004U - Linear rotor structure

Info

Publication number: CN218387004U
Application number: CN202222928455.2U
Authority: CN
Inventors: 滕义松; 谢秀斌; 范祥新; 李祥; 渠彪
Original assignee: Xuzhou Nanpu Electromechanical Technology Co ltd
Current assignee: Xuzhou Nanpu Electromechanical Technology Co ltd
Priority date: 2022-11-03
Filing date: 2022-11-03
Publication date: 2023-01-24
Anticipated expiration: 2032-11-03

Abstract

The utility model discloses a linear rotor structure, which comprises a rotor body, wherein a plurality of linear caulking grooves which are uniformly distributed along the circumferential direction are arranged on the rotor body, and permanent magnets are arranged in the linear caulking grooves; and one end of the straight caulking groove, which is close to the axis of the rotor body, is provided with a convex part, and a notch is formed at the end and is communicated with the straight caulking groove. The utility model discloses improve the structure of rotor to reach the purpose that improves magnetic field effect, optimize the noise.

Description

Linear rotor structure

Technical Field

The utility model relates to the technical field of electric motor, specifically be a style of calligraphy rotor structure.

Background

The permanent magnet synchronous motor has excellent performance and wide application, but has the defects of high noise, high production cost and the like. For example, there are improvements to the rotor structure in the prior art to achieve the objectives of optimizing noise, cost, etc. The present invention is directed to a rotor structure, and various modifications have been devised, for example, the present invention is directed to a rotor structure having a U-shaped rotor structure.

SUMMERY OF THE UTILITY MODEL

The technical insufficiency to the aforesaid exists, the utility model aims at providing a style of calligraphy rotor structure improves the structure of rotor to reach the purpose that improves magnetic field effect, optimization noise.

In order to solve the technical problem, the utility model adopts the following technical scheme:

the utility model provides a linear rotor structure, which comprises a rotor body, wherein a plurality of linear caulking grooves which are uniformly distributed along the circumferential direction are arranged on the rotor body, and permanent magnets are arranged in the linear caulking grooves;

and one end of the straight caulking groove, which is close to the axis of the rotor body, is provided with a convex part, and a notch is formed at the end and is communicated with the straight caulking groove.

Preferably, two convex parts are arranged at the same straight caulking groove and are symmetrically distributed on two sides of the notch.

Preferably, a gap is formed at the notch when the permanent magnet is mounted in the in-line slot.

Preferably, the gap is the slot itself or a partial space of the slot itself and the in-line caulking groove.

Preferably, a plurality of through holes which are uniformly distributed along the axial direction are formed in the rotor body, and the through holes and the straight caulking grooves are distributed at intervals.

Preferably, the through hole is of a symmetrical structure and has four protruding structures.

Preferably, a plurality of pin holes which are uniformly distributed along the circumferential direction are further formed in the rotor body.

Preferably, a shaft hole is formed in the center of the rotor body, and a key groove is formed in the shaft hole.

The beneficial effects of the utility model reside in that: the utility model discloses a structure to the rotor is optimized, after the permanent magnet installation, can form the clearance in notch department, and the distribution of magnetic field can be influenced in the existence in clearance, through the structure of this kind of style of calligraphy caulking groove and notch, has increased the magnetic field that directly influences the permanent magnet and form in the rotor, has increased the magnetic resistance here, effectively reduces the magnetic leakage, increases and gathers magnetism; similarly, the notch has a certain heat dissipation effect, which is beneficial to the operation of the motor.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the description below are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a linear rotor structure according to an embodiment;

FIG. 2 is a schematic view of a linear caulking groove and notch;

FIG. 3 is a schematic structural diagram of a via;

FIG. 4 is a comparison graph of magnetic field simulation;

FIG. 5 is a magnetic field simulation diagram of the present embodiment;

fig. 6 is a partial comparison of fig. 4 and 5.

Description of reference numerals:

01-rotor body, 1-straight-line-shaped caulking groove, 11-convex part, 12-notch, 02-shaft hole, 03-through hole, 04-pin hole and 05-permanent magnet.

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.

The embodiment is as follows:

as shown in fig. 1, the utility model provides a linear rotor structure, which comprises a rotor body 01, wherein the rotor body 01 is provided with a plurality of linear caulking grooves 1 which are uniformly distributed along the circumferential direction, and permanent magnets 05 are arranged in the linear caulking grooves 1;

wherein, the end of the straight caulking groove 1 close to the axis of the rotor body 01 is provided with a convex part 11, and a notch 12 is formed at the end, the notch 12 is communicated with the straight caulking groove 1, namely, during the actual manufacturing, the notch 12 and the straight caulking groove 1 can be integrally formed and processed, and can also be processed respectively.

Further, when the permanent magnet 05 is mounted in the in-line slot 1, a gap is formed at the slot 12, which may be the slot 12 itself, or the slot 12 itself plus a small part of the space of the in-line slot 1, wherein preferably the gap, i.e. the slot 12 itself, is the one shown in fig. 2.

In addition, two convex portions 11 are arranged at the same straight caulking groove 1 and are symmetrically distributed at two sides of the notch 12, that is, as shown in fig. 2, two convex portions 11 are provided.

Finally, as shown in fig. 2, after the permanent magnet 05 is installed, a gap is formed at the slot 12, the existence of the gap directly affects the magnetic field formed by the permanent magnet 05 in the rotor, and through the structural optimization of the linear caulking groove 1 and the slot 12, the magnetic resistance at the position is increased, the magnetic leakage is effectively reduced, and the magnetic gathering effect is increased.

In order to ensure the symmetry and uniformity of the rotor structure, the straight caulking grooves 1 and the notches 12 are uniformly distributed in the circumferential direction, and the straight caulking grooves 1 and the notches 12 are both directed to the axis of the rotor body 01, as shown in fig. 1 (only two vertical dotted lines are shown for illustration).

Further, in this embodiment, in order to match with the heat dissipation effect of the gap, a plurality of through holes 03 are further disposed on the rotor body 01, so as to facilitate heat dissipation and weight reduction. Specifically, for the structure of the through hole 03, the through hole 03 is of a symmetrical structure, and the through hole 03 has four protruding structures, that is, as shown in fig. 3, four protruding structures are provided around the through hole 03, so that it forms a structure similar to a "pear shape" (where the dotted line in the figure is an auxiliary line for embodying the structure and symmetry of the through hole 03); it should be noted that the through holes 03 need to be spaced apart from the in-line grooves 1. The distribution that can influence the magnetic field is mutually supported to clearance and through-hole 03, through the structure of this kind of style of calligraphy caulking groove 1, notch 12 and through-hole 03, has influenced the magnetic field that permanent magnet 05 formed in the rotor, has increased the magnetic resistance here, effectively reduces the magnetic leakage, increases and gathers the magnetic action.

In addition, as in the prior art, the rotor body 01 is correspondingly provided with a pin hole 04, a shaft hole 02 for installation is formed in the center of the rotor body 01, and a key groove is formed in the shaft hole 02.

Finally, in order to make the structure and effect of the present application more clear and easier to understand, we have conducted simulation experiments on the in-line rotor structure, as shown in fig. 4, 5 and 6:

wherein, fig. 4 is a comparison diagram without the notch 12 structure, fig. 5 is a schematic structural diagram of the present embodiment, which has the notch 12 structure thereon; it can be seen that the magnetic field effect of the present application is better than that of the comparative example, and the magnetic leakage can be effectively reduced, as shown in fig. 6, wherein fig. 6 is a part of fig. 4 and 5 which are put together for better clarity of comparison.

It will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. A linear rotor structure comprises a rotor body and is characterized in that a plurality of linear caulking grooves which are uniformly distributed along the circumferential direction are formed in the rotor body, and permanent magnets are installed in the linear caulking grooves;

2. The in-line rotor structure of claim 1, wherein two protrusions are provided at the same in-line caulking groove and are symmetrically disposed at both sides of the notch.

3. A in-line rotor structure according to claim 1, wherein a gap is formed at the notch when the permanent magnet is mounted in the in-line slot.

4. A inline rotor construction according to claim 3, characterised in that the gap is the slot itself or part of the space between the slot itself and the inline pocket.

5. The in-line rotor structure of claim 1, wherein the rotor body has a plurality of through holes uniformly distributed along the axial direction, and the through holes are alternately distributed with the in-line caulking grooves.

6. The in-line rotor structure of claim 5, wherein said through-hole is a symmetrical structure and said through-hole has four protrusions.

7. The in-line rotor structure of claim 1, wherein the rotor body further defines a plurality of pin holes uniformly distributed along the circumferential direction.

8. The in-line rotor structure of claim 1, wherein a shaft hole is formed at a central position of the rotor body, and a key groove is formed on the shaft hole.