CN216121963U - Rotor assembly and motor - Google Patents
Rotor assembly and motor Download PDFInfo
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- CN216121963U CN216121963U CN202122569919.0U CN202122569919U CN216121963U CN 216121963 U CN216121963 U CN 216121963U CN 202122569919 U CN202122569919 U CN 202122569919U CN 216121963 U CN216121963 U CN 216121963U
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Abstract
The application provides a rotor assembly and a motor. The rotor assembly comprises a rotor core, a first iron core and a second iron core; the first iron core is annular, a first magnetic steel groove and an assembly groove are formed in the first iron core, and the first magnetic steel groove and the assembly groove are distributed at intervals along the circumferential direction; the second iron core comprises a plurality of iron core blocks, and the iron core blocks are inserted into the assembling grooves; and a second magnetic steel groove is arranged in the iron core block. This application adopts combination formula rotor core structure, can both assemble the magnet steel on first iron core and the second iron core respectively, consequently can realize that the magnet steel fills the magnetism earlier and then assembles into rotor core, only need during the combination peg graft the second iron core in first iron core and can make up into whole rotor core, can not cause the damage to the magnet steel like this, and just the magnet steel separates the position and places in the iron core before the combination, can not like nature repel each other and lead to the magnet steel drunkenness, can realize rotor and the more excellent performance of motor, lower cost's purpose.
Description
Technical Field
The application belongs to the technical field of motors, and particularly relates to a rotor assembly and a motor.
Background
In the domestic motor trade, the direct current motor rotor is mostly magnet steel surface-mounted rotor and the embedded rotor of magnet steel, and these two kinds of rotors still adopt back magnetization mode to magnetize basically, and back magnetization mode is put into the frock of magnetizing again after magnet steel and rotor accomplish the assembly promptly and magnetizes, and the magnet steel is difficult to magnetize fully, and rotor and motor performance can not reach the design expectation.
SUMMERY OF THE UTILITY MODEL
Therefore, the application provides a rotor subassembly and motor, can solve among the prior art rotor and the motor performance that the back mode of magnetizing was magnetized and can not reach the design expectation problem.
In order to solve the above problems, the present application provides a rotor assembly including:
a rotor core including a first core and a second core;
the first iron core is annular, a first magnetic steel groove and an assembly groove are formed in the first iron core, and the first magnetic steel groove and the assembly groove are distributed at intervals along the circumferential direction;
the second iron core comprises a plurality of iron core blocks, and the iron core blocks are inserted into the assembling grooves; and a second magnetic steel groove is arranged in the iron core block.
Optionally, the second iron core further comprises a first fastener, and all the iron core blocks can be connected into a whole.
Optionally, each core block is provided with a first fastening hole, each first fastening piece includes a first ring portion and a first insertion portion, the first insertion portion is provided with a plurality of first insertion portions, one end of each first insertion portion is arranged on the first ring portion, and the other end of each first insertion portion is inserted into the first fastening hole.
Optionally, a second fastening hole is formed in the first iron core; the first fastener is further provided with a second inserting portion, one end of the second inserting portion is arranged on the first ring portion, and the other end of the second inserting portion is inserted into the second fastening hole.
Alternatively, the first fastening holes and the second fastening holes are distributed in a radial direction of the rotor core.
Optionally, the rotor assembly further comprises a second fastener capable of fastening and connecting the core block and the first core.
Optionally, a third fastening hole is formed in the iron core block, and a fourth fastening hole is formed in the first iron core; the second fastening piece comprises a second ring portion and a plurality of third inserting portions, one end of each third inserting portion is arranged on the second ring portion, the other end of one part of the third inserting portion is inserted into the third fastening hole, and the other end of the other part of the third inserting portion is inserted into the fourth fastening hole.
Alternatively, the third fastening holes and the fourth fastening holes are distributed in a circumferential direction of the rotor core.
Optionally, two second fastening pieces are arranged and respectively arranged at two axial ends of the rotor core; the third fastening hole and the fourth fastening hole are axial through holes, and the other end of the third insertion part penetrates through the third fastening hole or the fourth fastening hole to be connected with the second ring part on the other side.
According to another aspect of the present application, there is provided an electric machine comprising a rotor assembly as described above.
The present application provides a rotor assembly comprising: a rotor core including a first core and a second core; the first iron core is annular, a first magnetic steel groove and an assembly groove are formed in the first iron core, and the first magnetic steel groove and the assembly groove are distributed at intervals along the circumferential direction; the second iron core comprises a plurality of iron core blocks, and the iron core blocks are inserted into the assembling grooves; and a second magnetic steel groove is arranged in the iron core block.
This application adopts combination formula rotor core structure, can both assemble the magnet steel on first iron core and the second iron core respectively, consequently can realize that the magnet steel fills the magnetism earlier and then assembles into rotor core, only need during the combination peg graft the second iron core in first iron core and can make up into whole rotor core, can not cause the damage to the magnet steel like this, and just the magnet steel separates the position and places in the iron core before the combination, can not like nature repel each other and lead to the magnet steel drunkenness, can realize rotor and the more excellent performance of motor, lower cost's purpose.
Drawings
FIG. 1 is an exploded view of a rotor assembly according to an embodiment of the present application;
fig. 2 is a schematic structural diagram of a second core according to an embodiment of the present application;
fig. 3 is a schematic structural diagram of a first core according to an embodiment of the present application;
FIG. 4 is a front view of a rotor assembly of an embodiment of the present application;
FIG. 5 is a rear view of a rotor assembly of an embodiment of the present application;
FIG. 6 is a schematic structural view of a first fastener according to an embodiment of the present application;
FIG. 7 is a schematic structural view of a second fastener according to an embodiment of the present application;
FIG. 8 is another schematic structural view of a second fastener according to an embodiment of the present application;
fig. 9 is a schematic view of core blocks in a second core according to an embodiment of the present application;
fig. 10 is a schematic structural diagram of a first core according to an embodiment of the present application.
The reference numerals are represented as:
101. a second fastener; 102. a first fastener; 103. a core block; 104. magnetic steel; 105. a first iron core; 106. a second fastener; 107. positioning holes; 108. a plastic package material feeding hole; 1021. a second fastening post; 1022. a first fastening post; 1023. a first ring portion; 1011. a third fastening post; 1012. a third fastening post; 1013. an assembly hole; 1061. a third fastening post; 1062. a third fastening post; 1063. an assembly hole; 1031. a first fastening hole; 1032. a third fastening hole; 1033. a third fastening hole; 1034. riveting points; 1035. a magnetic steel groove; 1051. a second fastening hole; 1052. a fourth fastening hole; 1053. a fourth fastening hole; 1054. a magnetic steel groove; 1055. and (6) riveting points.
Detailed Description
Referring collectively to fig. 1-10, according to an embodiment of the present application, a rotor assembly includes:
a rotor core including a first core 105 and a second core;
the first iron core 105 is annular, and is provided with first magnetic steel 104 grooves and assembly grooves, wherein the first magnetic steel 104 grooves and the assembly grooves are circumferentially distributed at intervals;
the second iron core comprises a plurality of iron core blocks 103, and the iron core blocks 103 are inserted into the assembling grooves; a second magnetic steel 104 groove is arranged in the iron core block 103.
This application adopts combination formula rotor core structure, magnet steel 104 can both be assembled on first iron core 105 and the second iron core, consequently can realize magnet steel 104 and fill in rotor core after magnetizing earlier, only need during the combination peg graft the second iron core and can make up into whole rotor core in first iron core 105, can not cause the damage to magnet steel 104 like this, and magnet steel 104 separates the position and places in the iron core before the combination, can not like one's sex repels and leads to magnet steel 104 drunkenness, can realize the more excellent performance of rotor and motor, lower cost's purpose.
In some embodiments, the second core further comprises a first fastener 102 capable of integrally connecting all the core blocks 103.
The plurality of iron core blocks 103 are of a discrete structure and are not connected with each other, and all the iron core blocks 103 are connected and fastened by adopting the first fastening piece 102 to form a complete whole body, so that the iron core blocks are conveniently inserted into the first iron core 105.
In some embodiments, each of the core blocks 103 has a first fastening hole 1031, the first fastening member 102 includes a plurality of first ring portions 1023 and a plurality of first insertion portions, one end of each of the first insertion portions is disposed on the first ring portion 1023, and the other end of each of the first insertion portions is inserted into the first fastening hole 1031.
The first fastener 102 adopts an integral structure of the first ring part 1023 and the first inserting part, the tightness and integrity of the connection of the iron core blocks 103 are improved, each first inserting part is correspondingly inserted into the first fastening hole 1031 on the iron core block 103 to form fastening fit, all the iron core blocks 103 and the first fastener 102 form a whole body of the second iron core, and the operation is simple and convenient.
In some embodiments, the first core 105 is provided with a second fastening hole 1051; the first fastening member 102 is further provided with a second insertion portion, one end of the second insertion portion is disposed on the first ring portion 1023, and the other end is inserted into the second fastening hole 1051.
In order to enhance the stability of the core block 103, the first core 105 and the first fastener 102 are provided with components which are inserted into each other, and meanwhile, the assembly is convenient; specifically, the first fastening holes 1031 and the second fastening holes 1051 are distributed in a radial direction of the rotor core.
In some embodiments, the rotor assembly further includes a second fastener 106101 capable of securely connecting the core block 103 to the first core 105.
The second fastening member 101 is used to connect the first core 105 and the second core, so that the stability of the entire rotor core is improved.
In some embodiments, a third fastening hole 1032 is provided in the core block 103, and a fourth fastening hole 1052 is provided in the first core 105; the second fastening member 101 includes a second ring portion and a third plugging portion, the third plugging portion has a plurality of ends, one end of the third plugging portion is disposed on the second ring portion, the other end of a part of the third plugging portion is inserted into the third fastening hole 1032, and the other end of the other part of the third plugging portion is inserted into the fourth fastening hole 1052.
The second fastening member 101 has a combined structure in which one end of a plurality of third insertion portions are disposed on the second ring portion, and the other end of the third insertion portion is inserted into the third fastening hole 1032 and the fourth fastening hole 1052, so as to connect and fasten the iron core block 103 and the first iron core 105.
Preferably, the third and fourth fastening holes 1032 and 1052 are distributed in a circumferential direction of the rotor core.
The second fastener 101 connects and fixes the core block 103 and the first core 105 in the circumferential direction, and stability in the circumferential direction is improved.
In some embodiments, two second fastening members are provided, respectively provided at both axial ends of the rotor core; the third fastening hole 1032 and the fourth fastening hole 1052 are both axial through holes, and the other end of the third insertion part passes through the third fastening hole 1032 or the fourth fastening hole 1052 and is connected with the second ring part on the other side.
The mode that the second fastening pieces are arranged at the two axial ends of the rotor core is adopted, and the structural stability of the rotor assembly can be improved and the magnetic steel 104 is prevented from falling off in operation as the second fastening pieces 101 and 106 at the two axial ends of the rotor core are shown in fig. 1.
According to the application, the magnetic steel 104 can be magnetized by using a Halbach permanent magnet array method, after the magnetic steel 104 is fully magnetized, the magnetic steel 104 is respectively embedded into the iron core blocks 103, then all the iron core blocks 103 are connected together by using the first fasteners 102 to form a second iron core, meanwhile, the second fasteners 101 are penetrated, the second fasteners are inserted into the first iron core 105 through the second iron core, and finally, the second fasteners 106 are fastened through pressing tooling equipment to form a rotor through combination.
The specific operation is as follows: before the rotor is manufactured, the magnetic steel 104 needs to be magnetized, and a Halbach permanent magnet array needs to be used during magnetizing. The traditional magnetizing array is a radial array and a tangential array, and the Halbach permanent magnet array combines the radial array and the tangential array, so that after the magnetic steel 104 is magnetized, the magnetic field on one side of the array is obviously enhanced, the magnetic field on the other side of the array is obviously weakened, and the magnetic field with ideal sinusoidal distribution in space can be easily obtained. The strong side of the magnetic steel 104 in the magnetizing mode can form a magnetic field large enough, so that the motor performance can be greatly improved, and the motor cost can be reduced.
Before assembling the magnetic steel 104, a rotor core is also manufactured. The rotor core is divided into two parts: the iron core comprises a first iron core 105 and a second iron core, wherein the second iron core adopts a structure of a plurality of scattered iron core blocks 103, but the iron core blocks 103 are not connected with one another, so that the iron core blocks 103 need to be connected and fastened through a first fastening piece 102 to form a complete whole, the first inserting part on the first fastening piece 102 comprises a first fastening column 1022, the first fastening column is inserted into a first fastening hole 1031 on the iron core block 103 and is fastened in a matched manner, and a first ring part 1023 on the first fastening piece 102 is used for limiting the iron core. Then, the third inserting part on the second fastening member 101, which includes the third fastening column 1011, is inserted into the third fastening hole 1032 on the core block 103, and after the core block 103 is assembled with the second fastening member 101 and the first fastening member 102, the magnetic steel 104 is embedded into the magnetic steel 104 slot of the core block 103, so as to obtain the component shown in fig. 2.
Similarly, the third fastening column 1061 of the second fastening member 106 on the other side is inserted into the fourth fastening hole 1053 of the first core 105, the magnetic steel 104 is embedded into the magnetic steel 104 slot of the first core 105, and the second ring portion of the second fastening member 106 plays a role in limiting the core and the magnetic steel 104. After assembly, the component shown in fig. 3 is obtained.
In the transportation, need place the ring portion of fastener down when placing above-mentioned two kinds of parts, can avoid magnet steel 104 damage like this, the effect of accessible gravity lets magnet steel 104 keep laminating on the terminal surface of ring portion again, and because magnet steel 104 is misplaced in iron core piece 103 and first iron core 105 before the assembly, can not take place because of like-polarity repels the phenomenon that leads to magnet steel 104 drunkenness from top to bottom, even magnetism is very strong, also can be because after the position separation is put, magnet steel 104 is opposite polarities between and attracts, can play more firm effect on the contrary.
In order to avoid contact with the magnetic steel 104, the magnetic permeability of the materials of the first fastener 102 and the second fastener affects the overall performance of the rotor, and the materials of the fasteners are non-magnetic conductive metal materials or thermosetting BMC materials. Finally, through tooling equipment, a third fastening column on the second fastening piece is inserted into a mounting hole on the second fastening piece on the other side, a second fastening column 1021 on the first fastening piece 102 is inserted into a second fastening hole 1051 on the first iron core 105, and the two parts in the figures 2 and 3 are fastened and combined together through the combination of the fastening columns and the fastening holes, so that the novel combined high-performance embedded rotor can be obtained, and the novel combined high-performance embedded rotor is shown in figures 4 and 5.
If the magnetic steel 104 is higher than the surface of the rotor core, the height of the protrusion of the contact surface between the ring part of the first fastener 102 and the second fastener and the magnetic steel 104 is adjusted according to the length of the magnetic steel 104 exceeding the surface of the rotor core; the rotor punching sheet with the structure is reserved with a plastic package material inlet 108 required in plastic coating and a positioning hole 107 positioned on an injection mold, and can be coated with plastic according to requirements; if after the actual fastening, magnet steel 104 has the condition of horizontal hunting because of problems such as size precision, can imbed behind the viscose on magnet steel 104, can reach the effect of this patent equally.
In order to facilitate connection and fixation, the iron core block 103 is provided with a riveting point 1034, and the first iron core 105 is provided with a riveting point 1055, so that connection is facilitated.
According to another aspect of the present application, there is provided an electric machine comprising a rotor assembly as described above.
It is easily understood by those skilled in the art that the above embodiments can be freely combined and superimposed without conflict.
The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application. The foregoing is only a preferred embodiment of the present application, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present application, and these modifications and variations should also be considered as the protection scope of the present application.
Claims (10)
1. A rotor assembly, comprising:
a rotor core including a first core (105) and a second core;
the first iron core (105) is annular, a first magnetic steel (104) groove and an assembly groove are formed in the first iron core, and the first magnetic steel (104) groove and the assembly groove are distributed at intervals along the circumferential direction;
the second iron core comprises a plurality of iron core blocks (103), and the iron core blocks (103) are inserted into the assembling grooves; and a second magnetic steel (104) groove is arranged in the iron core block (103).
2. The rotor assembly of claim 1, wherein the second core further comprises a first fastener (102) capable of integrally connecting all of the core blocks (103).
3. The rotor assembly according to claim 2, wherein each core block (103) is provided with a first fastening hole (1031), the first fastening member (102) comprises a first ring portion (1023) and a plurality of first insertion portions, one end of each first insertion portion is arranged on the first ring portion (1023), and the other end of each first insertion portion is inserted into the first fastening hole (1031).
4. The rotor assembly according to claim 3, wherein the first core (105) is provided with a second fastening hole (1051); the first fastening piece (102) is further provided with a second inserting portion, one end of the second inserting portion is arranged on the first ring portion (1023), and the other end of the second inserting portion is inserted into the second fastening hole (1051).
5. The rotor assembly according to claim 4, wherein the first fastening holes (1031) and the second fastening holes (1051) are distributed in a radial direction of the rotor core.
6. The rotor assembly according to any one of claims 1 to 5, further comprising a second fastener (101) capable of fastening the core block (103) to the first core (105).
7. The rotor assembly of claim 6, wherein a third fastening hole (1032) is provided in the core block (103), and a fourth fastening hole (1052) is provided in the first core (105); the second fastening piece (101) comprises a second ring portion and a plurality of third inserting portions, one end of each third inserting portion is arranged on the second ring portion, the other end of one part of the third inserting portion is inserted into the third fastening hole (1032), and the other end of the other part of the third inserting portion is inserted into the fourth fastening hole (1052).
8. The rotor assembly according to claim 7, wherein the third fastening holes (1032) and the fourth fastening holes (1052) are distributed in a circumferential direction of the rotor core.
9. The rotor assembly according to claim 7 or 8, wherein the second fastening member (101) is provided in two, respectively at both axial ends of the rotor core; the third fastening hole (1032) and the fourth fastening hole (1052) are both axial through holes, and the other end of the third insertion part penetrates through the third fastening hole (1032) or the fourth fastening hole (1052) to be connected with the second ring part on the other side.
10. An electrical machine comprising a rotor assembly as claimed in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122569919.0U CN216121963U (en) | 2021-10-25 | 2021-10-25 | Rotor assembly and motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122569919.0U CN216121963U (en) | 2021-10-25 | 2021-10-25 | Rotor assembly and motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216121963U true CN216121963U (en) | 2022-03-22 |
Family
ID=80695319
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122569919.0U Active CN216121963U (en) | 2021-10-25 | 2021-10-25 | Rotor assembly and motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216121963U (en) |
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2021
- 2021-10-25 CN CN202122569919.0U patent/CN216121963U/en active Active
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