WO2021227253A1

WO2021227253A1 - High-performance electric motor rotor core

Info

Publication number: WO2021227253A1
Application number: PCT/CN2020/103717
Authority: WO
Inventors: 沈恩明; 沈以撒; 沈荣泉
Original assignee: 湖州南洋电机有限公司
Priority date: 2020-05-09
Filing date: 2020-07-23
Publication date: 2021-11-18
Also published as: CN111416451A

Abstract

Disclosed is a high-performance electric motor rotor core. The high-performance electric motor rotor core comprises two first sheet groups (1), which are distributed up and down. A plurality of composite units are arranged between the two first sheet groups (1), and each composite unit comprises a third sheet group (3) and a fourth sheet group (4); each of the first sheet groups (1) comprises a first connecting sheet (10), a first fin (11) is arranged on an outer side of the first connecting sheet (10), and the first fin (11) is connected to the first connecting sheet (10) by means of a first adapter plate (12); the third sheet group (3) comprises a third connecting sheet (30), four third fins A (31) are arranged on an outer side of the third connecting sheet (30), the third fins A (31) are connected to the third connecting sheet (30) by means of third adapter plates (32), third fins B (33) are arranged between adjacent third fins A (31), and the third fins B (33) are disconnected from the third connecting sheet (30); and the fourth sheet group (4) comprises a fourth connecting sheet (40), four fourth fins C (41) are arranged on an outer side of the fourth connecting sheet (40), the fourth fins C (41) are connected to the fourth connecting sheet (40) by means of fourth adapter plates (42), and fourth fins D (43) are arranged between adjacent fourth fins C (41). The solution has the advantage of a large magnetic flux, and can improve the performance of an electric motor.

Description

High-performance motor rotor core

Technical field

The invention belongs to the field of motor rotor iron cores of clothes dryers, and in particular relates to a high-performance motor rotor iron core of clothes dryers.

Background technique

The structure of the rotor iron core of the motor of the existing dryer includes a plurality of first plate groups, a second plate group is arranged between adjacent first plate groups, and a plurality of first plate groups and a plurality of second plate groups are stacked The rotor core is formed; the structure of the first plate group is integral, including a first connecting piece of a circular ring shape. The outer side of the first connecting piece is provided with eight first fins. Curved surface, the first fin is connected to the first connecting fin through the first adapter plate; the second fin group is split, composed of eight second fins with the same shape as the first fin, and the second fin corresponds to The first fin, the second fin and the first fin are all provided with positioning structures. The conventional forming process of the rotor core is to first punch the first sheet group, then punch the second sheet group, and then punch the first sheet group, so that the stamping and stacking cycles are repeated until the first sheet group is used to punch the end to end.

The structure of the existing rotor core mainly considers the magnetic flux size and structural strength of the rotor core. The structural strength is guaranteed by adopting an integral plate group for each interval layer, but the integral plate group is low and has a large loss of magnetic flux. It will reduce the magnetic flux of the iron core of the device, which will result in a decrease in the performance of the motor.

Therefore, the existing rotor core has the defect of small magnetic flux, which will reduce the performance of the motor.

Summary of the invention

The purpose of the present invention is to provide a high-performance motor rotor core. The invention has the advantage of large magnetic flux and can improve the performance of the motor.

The technical scheme of the present invention: the high-performance motor rotor core includes two first plate groups distributed up and down, a plurality of composite units are arranged between the two first plate groups, and the composite unit includes a third plate group and a first plate group. Four-piece group

The first piece group includes a first connecting piece in a circular ring shape, eight first fins are provided on the outer side of the first connecting piece, and the first fins are connected to the first connecting piece through a first adapter plate;

The third piece group includes a circular ring-shaped third connecting piece. The outside of the third connecting piece is provided with four third fins A with the same shape as the first fins. The third fins A are connected with each other through the third adapter plate. The third connecting fin is connected. A third fin B with the same shape as the first fin is provided between adjacent third fins A. The third fin B is disconnected from the third connecting fin. The third fin B There are four in total, four third fins A and four third fins B respectively correspond to the eight first fins;

The fourth plate group includes a circular ring-shaped fourth connecting piece. Four fourth fins C having the same shape as the first fin are arranged on the outer side of the fourth connecting piece. The fourth connecting fins are connected. A fourth fin D with the same shape as the first fin is provided between adjacent fourth fins C. The fourth fin D is disconnected from the fourth connecting fin. The fourth fin D There are four in total. The four fourth fins C correspond to the four third fins B respectively, and the four fourth fins D correspond to the four third fins A respectively.

In the aforementioned high-performance motor rotor core, the first fin, the third fin A, the third fin B, the fourth fin A, and the fourth fin B are all provided with positioning structures.

In the aforementioned high-performance motor rotor core, a fifth plate group is provided between adjacent composite units, and the structure of the fifth plate group is the same as that of the first plate group.

Compared with the prior art, the composite unit of the present invention is equivalent to the existing second plate group, the composite unit is composed of the third plate group and the fourth plate group, and both the third plate group and the fourth plate group adopt a split structure , That is, only four fins are adjacent to the connecting fins, and the other four fins are disconnected from the connecting fins, and the broken fins correspond to the adjacent non-disconnected fins, so as to ensure the structure of the rotor core The strength can also increase the magnetic flux of the rotor core, and the increase can reach 8%, which can increase the performance of the motor.

Therefore, the present invention has the advantage of large magnetic flux and can improve the performance of the motor.

Description of the drawings

Figure 1 is an exploded schematic diagram of the present invention.

Fig. 2 is a top view of the first sheet group.

Fig. 3 is a plan view of the third sheet group.

Fig. 4 is a plan view of the fourth sheet group.

Fig. 5 is an exploded schematic diagram of the existing rotor core.

The marks in the drawings are: 1-first piece group, 10-first connecting piece, 11-first fin, 12-first adapter plate; 3-third piece group, 30-third connecting piece, 31-third fin A, 32-third adapter plate, 33-third fin B; 4-fourth fin group, 40-fourth connecting fin, 41-fourth fin C, 42-fourth Adapter plate, 43-fourth fin D.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings and embodiments, but it is not used as a basis for limiting the present invention.

Example 1. The high-performance motor rotor core, as shown in Fig. 1, includes two first plate groups 1 distributed up and down, a plurality of composite units are arranged between the two first plate groups 1, and the composite unit includes a third plate group 3 and the fourth film group 4;

The first sheet group 1 includes a first connecting sheet 10 in a circular ring shape. Eight first fins 11 are provided on the outer side of the first connecting sheet 10, and the first fins 11 are connected to the first connecting sheet through the first adapter plate 12 10 connections;

The third piece group 3 includes a circular ring-shaped third connecting piece 30. The outside of the third connecting piece 30 is provided with four third fins A31 with the same shape as the first fin 11, and the third fin A31 passes through the third fin A31. The adapter plate 32 is connected to the third connecting piece 30. A third fin B33 having the same shape as the first fin 11 is provided between adjacent third fins A31. There are four third fins B33, four third fins A31 and four third fins B33 respectively correspond to the eight first fins 11;

The fourth plate group 4 includes a ring-shaped fourth connecting piece 40. Four fourth fins C41 with the same shape as the first fin 11 are provided on the outside of the fourth connecting piece 40. The fourth fin C41 passes through the fourth fin C41. The adapter plate 42 is connected to the fourth connecting piece 40. A fourth fin D43 having the same shape as the first fin 11 is provided between adjacent fourth fins C41. There are four fourth fins D43, the four fourth fins C41 correspond to the four third fins B33, and the four fourth fins D43 correspond to the four third fins A31.

The first fin 11, the third fin A31, the third fin B33, the fourth fin C41 and the fourth fin D43 are all provided with positioning structures. The positioning structure is two positioning holes with a rectangular cross section.

A fifth plate group 5 is provided between the adjacent composite units. The structure of the fifth plate group 5 is the same as that of the first plate group 1. The fifth plate group 5 is used to further improve the structural strength of the rotor core . The structure of the third plate group 3 and the fourth plate group 4 are actually the same, and the only difference lies in the placement angle of the rotor core during installation.

The forming process is to first punch the first piece group 1, use 16 positioning posts to pass through the positioning holes on the first piece group, and then punch the third piece group 3, the fourth piece group 4 and the fifth piece group 5. Continue to loop until the last punching of the first piece group 1 is finished.

Example 2. The difference from Embodiment 1 is that there is no first plate group 1 between adjacent composite units, and there are only two first plate groups 1 on the rotor core, which are located at both ends of the rotor core.

The invention has the advantage of large magnetic flux and can improve the performance of the motor.

Claims

The rotor core of a high-performance motor is characterized in that it includes two first plate groups (1) distributed up and down, a plurality of composite units are arranged between the two first plate groups (1), and the composite unit includes a third Film group (3) and fourth film group (4);

The first plate group (1) includes a circular first connecting piece (10), and eight first fins (11) are provided on the outer side of the first connecting piece (10). The first fins (11) pass through the first connecting piece (10). An adapter plate (12) is connected with the first connecting piece (10);

The third piece group (3) includes a circular ring-shaped third connecting piece (30), and the outside of the third connecting piece (30) is provided with four third fins A (the same shape as the first fin (11)). 31), the third fin A (31) is connected to the third connecting piece (30) through the third adapter plate (32), and the adjacent third fin A (31) is provided with the first fin ( 11) The third fin B (33) with the same shape is disconnected between the third fin B (33) and the third connecting fin (30). There are four third fins B (33) in total, four third The fin A (31) and the four third fins B (33) respectively correspond to the eight first fins (11);

The fourth piece group (4) includes a circular ring-shaped fourth connecting piece (40), and the outer side of the fourth connecting piece (40) is provided with four fourth fins C (the same shape as the first fin (11) 41), the fourth fin C (41) is connected to the fourth connecting piece (40) through the fourth adapter plate (42), and the adjacent fourth fin C (41) is provided with the first fin ( 11) The fourth fin D (43) with the same shape is disconnected between the fourth fin D (43) and the fourth connecting fin (40). There are four fourth fins D (43) in total, four fourth The fins C (41) respectively correspond to the four third fins B (33), and the four fourth fins D (43) respectively correspond to the four third fins A (31).
The high-performance motor rotor core according to claim 1, characterized in that: the first fin (11), the third fin A (31), the third fin B (33), and the fourth fin C (41) and the fourth fin D (43) are both provided with positioning structures.
The high-performance motor rotor core according to claim 1, characterized in that: a fifth plate group (5) is provided between adjacent composite units, and the structure of the fifth plate group (5) is the same as that of the first plate group. The structure of (1) is the same.