CN213906401U

CN213906401U - Motor rotor iron core and motor

Info

Publication number: CN213906401U
Application number: CN202022611694.6U
Authority: CN
Inventors: 马洪涛
Original assignee: Ningbo Jingcheng Motor Co ltd
Current assignee: Ningbo Jingcheng Motor Co ltd
Priority date: 2020-11-12
Filing date: 2020-11-12
Publication date: 2021-08-06
Anticipated expiration: 2030-11-12

Abstract

The utility model provides a motor rotor iron core and a motor; the motor rotor iron core comprises a main shaft and a plurality of rows of tooth blocks; the multiple rows of tooth blocks are uniformly distributed on the circumferential direction of the outer wall of the main shaft; the tooth block is formed by overlapping a plurality of punching sheets; the utility model provides a scheme can effectively improve the utilization ratio towards the piece material among the electric motor rotor core for straight flute and chute location are more convenient, reduce electric motor rotor core's manufacturing cost.

Description

Motor rotor iron core and motor

Technical Field

The utility model belongs to the technical field of electric motor rotor iron core, concretely relates to electric motor rotor iron core and motor.

Background

At present, the processing technology of the motor iron core mostly adopts a stamping lamination method or a coiling method; the winding method is only suitable for processing narrow-ring iron cores with enlarged curvature radius and shallower slots, and is mainly suitable for inner open slots, such as automobile generator iron cores, but for small-radius iron cores with outer open slots, the winding method cannot be realized by using a common winding processing method; therefore, the general iron core mostly adopts a stamping lamination method, and the basic steps are as follows: firstly, punching the silicon steel sheet by a punch through a die according to the cross section shape of the iron core to obtain a piece of punched sheet, and then laminating the punched sheets together to form the iron core with the thickness required by the drawing; during the punching process, the falling material sheets are formed into useful punching sheets, waste materials are left on the plates, the material utilization rate of the processing method for punching the lamination sheets is generally between 25 and 50 percent according to the cross section shape of the iron core, and different groove shapes, such as a straight groove and an inclined groove, are difficult to position, and an additional pair of dies is required to be opened, so that the process cost is increased.

Based on the technical problems in the processing of the motor iron core, no relevant solution is provided; there is therefore a pressing need to find effective solutions to the above problems.

Disclosure of Invention

The utility model aims at the weak point that exists among the above-mentioned technique, propose, aim at solving among the current electric motor rotor core towards one of the problem that sheet material utilization is low, straight flute and chute location difficulty, the full rate of groove is low, manufacturing cost is high.

The utility model provides a motor rotor iron core, which comprises a main shaft and a plurality of rows of tooth blocks; the multiple rows of tooth blocks are uniformly distributed on the circumferential direction of the outer wall of the main shaft; the tooth block is formed by stacking a plurality of punching sheets.

Furthermore, a plurality of clamping grooves are formed in the outer wall of the main shaft; the clamping grooves are distributed on the circumferential direction of the outer wall of the main shaft side by side along the axial direction of the main shaft; the multiple punching sheets are clamped in the clamping grooves through clamping blocks at one end parts of the punching sheets and can slide along the clamping grooves, so that the punching sheets are overlapped to form the tooth blocks.

Furthermore, the clamping groove is of a dovetail groove structure, the clamping block is of a dovetail structure, and the dovetail structure is matched with the dovetail groove structure; or the clamping groove is of a trapezoid groove structure, the clamping block is of a trapezoid structure, and the trapezoid structure is matched with the trapezoid structure.

Furthermore, the multiple rows of tooth blocks are distributed on the outer wall of the main shaft along the axial direction of the main shaft; the bottom surface of the clamping groove is an arc surface, the bottom surface of the clamping block is an arc surface, and the circle centers of the clamping groove and the arc surface of the clamping block and the circle center of the main shaft are concentrically arranged.

Furthermore, the punching sheet is of a single-tooth punching sheet structure, the single-tooth punching sheet structure comprises a tooth body and a tooth crown, the fixture block is arranged at the bottom of the tooth body, and the tooth crown is arranged at the top of the tooth body.

Furthermore, the tooth crown extends towards two sides of the tooth body to form a T-shaped structure, and a yoke part is formed at the joint of the tooth crown and the tooth body; a plurality of tooth bodies superpose the tooth body portion that forms the tooth piece, and tooth body portion is used for twining the copper line.

Furthermore, a protrusion is arranged on the upper end face of the tooth crown, a groove is arranged on the lower end face of the tooth crown, and the protrusion is matched with the groove; and adjacent punching sheets are positioned by the bulges and the grooves.

Furthermore, the arrangement positions or structures of the protrusions and the grooves on each punching sheet are different, and the arrangement positions or structures of the protrusions and the grooves on adjacent punching sheets are the same.

Further, the motor rotor core also comprises a motor shaft; a through hole is arranged in the main shaft along the axial direction of the main shaft, and one end of a motor shaft penetrates through the through hole and is fixedly connected with the main shaft.

Correspondingly, the utility model also provides a motor, which comprises a motor rotor iron core; the motor rotor iron core is the motor rotor iron core.

The utility model provides a motor rotor iron core, the motor rotor iron core that can freely match is formed by splicing a plurality of sizes of main shafts with tooth grooves and a plurality of groups of iron core tooth blocks wound with coils, and each row of tooth blocks is formed by mutually superposing a plurality of independent punching sheet units; the punching sheet has the advantages that the protrusions with different angles are arranged on each single punching sheet, the corresponding grooves are formed in the back of the punching sheet, different protrusions and grooves can be selected to correspond to each other when the punching sheet is laminated, the protrusions are used for positioning the angles of the straight groove, the inclined groove and the inclined groove, the laminating freedom of the punching sheet and the repeated utilization of materials are achieved, the utilization rate of the materials and multiple possibilities of material combination are improved, the positioning difficulty of the straight groove and the inclined groove is effectively improved, the process cost is reduced, and the utilization rate of the materials is increased.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

The present invention will be further explained with reference to the accompanying drawings:

fig. 1 is a schematic structural view of an iron core of a motor rotor according to the present invention;

fig. 2 is a side view of a structure of a motor rotor core according to the present invention;

fig. 3 is a schematic view of a main shaft structure of the ten-slot structure of the present invention;

fig. 4 is a schematic view of the main shaft structure of the eight-slot structure of the present invention;

FIG. 5 is a first schematic view of the structure of the punching sheet of the present invention;

fig. 6 is the structure diagram of the punching sheet of the present invention.

In the figure: 1. a main shaft; 11. a card slot; 12. a through hole; 2. a tooth block; 3. punching; 31. a tooth body; 32. a clamping block; 33. a crown; 34. a protrusion; 35. a yoke portion; 36. a groove; 4. a motor shaft.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

As shown in fig. 1 to 6, the present invention provides a motor rotor core, which specifically includes a main shaft 1 and a plurality of rows of tooth blocks 2; wherein, a plurality of rows of tooth blocks 2 are evenly distributed in the circumferential direction of the outer wall of the main shaft 1 side by side, and each tooth block 2 is formed by overlapping a plurality of punching sheets 3; the utility model provides a motor rotor core which can freely adjust the pole number like the assembly building block, and can be formed by splicing a plurality of tooth blocks 2 which have different outer diameters, groove numbers and length main shafts 1 and can wind copper wires, wherein each tooth block 2 is formed by mutually superposing a plurality of punching sheets 3; the utility model provides a motor rotor iron core, for the assembly motor iron core that can freely match the combination, this motor iron core can be used for the stator iron core in the motor, also can regard as the rotor iron core of generator, the production flow that can better adapt to more trend to automated production at present; the utility model provides an electric motor rotor core can effectively improve the utilization ratio of punching the piece material among the electric motor rotor core for straight flute and chute location are more convenient, reduce electric motor rotor core's manufacturing cost.

Preferably, in combination with the above scheme, as shown in fig. 1 to 6, a plurality of clamping grooves 11 are arranged on the outer wall of the main shaft 1; a plurality of clamping grooves 11 are distributed in the circumferential direction of the outer wall of the main shaft 1 side by side along the axial direction of the main shaft 1; furthermore, the multiple punching sheets 3 are clamped in the clamping groove 11 through a clamping block 32 at one end part of each punching sheet and can slide along the clamping groove 11, so that the punching sheets are overlapped to form the tooth block 2; further, the latch 32 can be clamped in the slot 11 in the radial direction of the spindle 1 and can slide in the axial direction of the spindle 1.

Preferably, with reference to the above schemes, as shown in fig. 1 to 6, in this embodiment, the slot 11 is specifically a dovetail groove structure, and the fixture block 32 is specifically a dovetail structure, and the dovetail structure is adapted to the dovetail groove structure, that is, a dovetail-shaped fixture block structure is extended from the bottom end of the stamped piece 3, and can be matched with dovetail grooves on the main shaft 1 with different outer diameters, groove numbers and lengths; it should be noted that, the dovetail structure of the middle finger in the present invention may specifically refer to a structure with "ㄥ" on both sides; further, the clamping groove 11 is of a trapezoid groove structure, the clamping block 32 is of a trapezoid structure, and the trapezoid structure is matched with the trapezoid structure, so that clamping, assembling and sliding superposition can be achieved to form the tooth block 2.

Preferably, in combination with the above solution, as shown in fig. 1 to 6, the rows of tooth blocks 2 are distributed on the outer wall of the main shaft 1 along the axial direction of the main shaft 1; the bottom surface of the clamping groove 11 is an arc surface, the bottom surface of the fixture block 32 is an arc surface, and the circle centers of the clamping groove 11 and the fixture block 32 arc surfaces are concentrically arranged with the circle center of the spindle 1, namely, the circle centers of the clamping groove 11 and the fixture block 32 arc surfaces are superposed with the circle center of the spindle 1; specifically, the number of the clamping grooves on the outer wall surface of the main shaft 1 is consistent with the number of rows of the tooth blocks 2; as shown in fig. 3, preferably, the number of the slots and the number of rows of the tooth blocks 2 are 10, that is, 10 slots are provided on each section of the spindle 1, and 10 rows of the fixture blocks 2 are provided at the same time, and each row of the fixture blocks 2 is formed by stacking a plurality of single-tooth punching sheets; as shown in fig. 4, preferably, the number of the slots and the number of rows of the tooth blocks 2 are respectively 8, that is, 8 slots are provided on each section of the spindle 1, and 8 rows of the fixture blocks 2 are provided at the same time, and each row of the fixture blocks 2 is formed by stacking a plurality of single-tooth punching sheets; the utility model provides an electric motor rotor core, the number of pole pairs of the selection rotor that can be free, through selecting different external diameter, different groove number main shafts, can freely adjust the groove number and the external diameter of rotor, through the main shaft of selecting different length, can freely adjust the rotor height, improved electric motor core material utilization moreover, dovetail and dovetail fixture block mutually support moreover, simple structure, equipment convenience, positioning accuracy height.

Preferably, with reference to the above scheme, as shown in fig. 1 to 6, the sheet 3 is a single-tooth sheet structure, specifically, the single-tooth sheet structure includes a tooth body 31 and a tooth crown 33, and the fixture block 32 is disposed at the bottom of the tooth body 31 and is integrally formed with the tooth body 31; further, a crown 33 is provided on the top of the tooth body 31 and is integrally formed with the tooth body 31.

Preferably, in combination with the above solutions, as shown in fig. 1 to 6, the tooth crown 33 extends to both sides of the tooth body 31 to form a T-shaped structure, the joint of the tooth crown 33 and the tooth body 31 forms a yoke 35, and the yoke 35 has a meshing section; the plurality of tooth bodies 31 are stacked to form a tooth body portion of the tooth block 2, which is used for winding a copper wire.

Preferably, in combination with the above solution, as shown in fig. 1 to 6, a protrusion 34 is provided on the upper end surface of the crown 33, a groove 36 is provided on the lower end surface of the crown 33, and the protrusion 34 is adapted to the groove 36; adjacent punching sheets 3 are positioned through the protrusions 34 and the grooves 36; specifically, a small protrusion 34 and a groove matched with the small protrusion on the back of the tooth crown 33 of the single-tooth punching sheet are arranged on the tooth crown 33 of each single-tooth punching sheet, so that the pressure superposed between the single punching sheets can be ensured.

Preferably, with the above scheme, as shown in fig. 1 to 6, the positions or structures of the protrusions 34 and the grooves 36 on each punching sheet 3 are not the same, that is, the design structures of the protrusions 34 on each punching sheet are different, the design structures of the grooves 36 on each punching sheet are different, but it is required to ensure that the design positions of the protrusions 34 and the grooves on adjacent punching sheets 3 are the same, and the structures of the protrusions 34 and the grooves on adjacent punching sheets 3 are the same.

Preferably, in combination with the above solution, as shown in fig. 1 to 6, the motor rotor core further includes a motor shaft 4; a through hole 12 is arranged in the main shaft 1 along the axial direction, and one end of the motor shaft 4 penetrates through the through hole 12 and is fixedly connected with the main shaft 1.

Correspondingly, in combination with the above scheme, as shown in fig. 1 to 6, the present invention further provides a motor, including a motor rotor core; the motor rotor iron core is the motor rotor iron core.

The foregoing is merely a preferred embodiment of the invention and is not intended to limit the invention in any way. The technical solutions of the present invention can be used by anyone skilled in the art to make many possible variations and modifications to the technical solution of the present invention, or to modify equivalent embodiments with equivalent variations, without departing from the scope of the technical solution of the present invention. Therefore, any modification, equivalent change and modification of the above embodiments according to the present invention are all within the protection scope of the present invention.

Claims

1. The motor rotor iron core is characterized by comprising a main shaft (1) and a plurality of rows of tooth blocks (2); the rows of the tooth blocks (2) are uniformly distributed on the periphery of the outer wall of the main shaft (1); the tooth block (2) is formed by overlapping a plurality of punching sheets (3).

2. The motor rotor core according to claim 1, wherein a plurality of clamping grooves (11) are arranged on the outer wall of the main shaft (1); the clamping grooves (11) are distributed in the circumferential direction of the outer wall of the main shaft (1) side by side along the axial direction of the main shaft (1); the punching sheets (3) are clamped in the clamping grooves (11) through clamping blocks (32) at one end parts of the punching sheets and can slide along the clamping grooves (11), so that the tooth blocks (2) are formed in a superposed mode.

3. The motor rotor core according to claim 2, wherein the slot (11) is a dovetail groove structure, and the fixture block (32) is a dovetail structure, and the dovetail structure is matched with the dovetail groove structure; or the clamping groove (11) is of a trapezoid groove structure, the clamping block (32) is of a trapezoid structure, and the trapezoid structure is matched with the trapezoid structure.

4. The electric machine rotor core according to any one of claims 2 to 3, characterized in that the rows of tooth blocks (2) are distributed on the outer wall of the main shaft (1) along the axial direction of the main shaft (1); the bottom surface of the clamping groove (11) is an arc surface, the bottom surface of the clamping block (32) is an arc surface, and the circle centers of the clamping groove (11) and the arc surface of the clamping block (32) and the circle center of the main shaft (1) are concentrically arranged.

5. The motor rotor core according to any one of claims 2 to 3, wherein the lamination (3) is a single-tooth lamination structure, the single-tooth lamination structure comprises a tooth body (31) and a tooth crown (33), the fixture block (32) is arranged at the bottom of the tooth body (31), and the tooth crown (33) is arranged at the top of the tooth body (31).

6. The electric machine rotor core according to claim 5, wherein the tooth crowns (33) extend towards two sides of the tooth body (31) respectively to form a T-shaped structure, and a yoke part (35) is formed at the joint of the tooth crowns (33) and the tooth body (31); the tooth bodies (31) are overlapped to form the tooth body parts of the tooth blocks (2), and the tooth body parts are used for winding copper wires.

7. The motor rotor core according to claim 5, wherein the upper end surface of the tooth crown (33) is provided with a protrusion (34), the lower end surface of the tooth crown (33) is provided with a groove (36), and the protrusion (34) is matched with the groove (36); the adjacent punching sheets (3) are positioned through the protrusions (34) and the grooves (36).

8. The motor rotor core according to claim 7, wherein the arrangement positions or structures of the protrusions (34) and the grooves (36) on each punching sheet (3) are different, and the arrangement positions or structures of the protrusions (34) and the grooves (36) on adjacent punching sheets (3) are the same.

9. The electric machine rotor core according to claim 1, further comprising a motor shaft (4); a through hole (12) is formed in the main shaft (1) along the axial direction of the main shaft, and one end of the motor shaft (4) penetrates through the through hole (12) and is fixedly connected with the main shaft (1).

10. An electric machine comprising a machine rotor core; the motor rotor core is characterized in that the motor rotor core is the motor rotor core as claimed in any one of claims 1 to 9.