CN211508746U - Combined rotor core and motor - Google Patents
Combined rotor core and motor Download PDFInfo
- Publication number
- CN211508746U CN211508746U CN202020082974.XU CN202020082974U CN211508746U CN 211508746 U CN211508746 U CN 211508746U CN 202020082974 U CN202020082974 U CN 202020082974U CN 211508746 U CN211508746 U CN 211508746U
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- rotor
- hole
- punching sheet
- sheet
- rotor punching
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- 238000004080 punching Methods 0.000 claims abstract description 100
- 238000007789 sealing Methods 0.000 claims abstract description 35
- 229910000831 Steel Inorganic materials 0.000 claims description 27
- 239000010959 steel Substances 0.000 claims description 27
- 238000002955 isolation Methods 0.000 claims description 13
- 239000002131 composite material Substances 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 11
- 238000000034 method Methods 0.000 description 6
- 238000003475 lamination Methods 0.000 description 4
- 238000001228 spectrum Methods 0.000 description 4
- 238000005538 encapsulation Methods 0.000 description 3
- 239000003292 glue Substances 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 229920003023 plastic Polymers 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000741 silica gel Substances 0.000 description 2
- 229910002027 silica gel Inorganic materials 0.000 description 2
- 230000007306 turnover Effects 0.000 description 2
- 241000283216 Phocidae Species 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012938 design process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The utility model discloses a combined rotor core, including through-hole rotor punching, hole sealing rotor punching, rotor core stack riveting, set up first rotor deduplication groove on the through-hole rotor punching, set up second rotor deduplication groove on the hole sealing rotor punching; the first rotor weight-removing groove and the second rotor weight-removing groove are arranged in a hole-aligning mode, any end faces of the hole-sealed rotor punching sheet and the through-hole rotor punching sheet are stacked, the rotor core is stacked and riveted to fix the through-hole rotor punching sheet and the hole-sealed rotor punching sheet together, and therefore the combined rotor core is formed. The motor comprises a stator and a rotor, and the rotor comprises the combined rotor core. And the utility model discloses a rotor core structure adopts through-hole rotor punching, hole sealing rotor punching to combine together the mode, constitutes the rotor core of brand-new structure, has both guaranteed the magnetic performance requirement of design, has also solved the problem in the production process.
Description
Technical Field
The utility model belongs to the technical field of the motor, especially, relate to a modular rotor core and motor.
Background
In the design and production process of the permanent magnet synchronous motor rotor, in order to improve the efficiency and reduce the solid frequency vibration noise of the motor, the rotor magnetic steel groove needs to be encapsulated and the width of the rotor magnetic isolation bridge needs to be reduced.
The problem of glue leakage in encapsulation is solved by coating sealing silica gel, the sealing effect of a rotor magnetic steel groove is influenced by the uniform degree of gluing in the operation process, glue leakage at the positions of a weight removal groove/support of an inner circle of a rotor and a magnetic isolation bridge of an outer circle of the rotor easily occurs, and the dynamic balance of the rotor is poor and the whole machine operates and vibrates. The position of the rotor magnetic isolation bridge is narrow, and the rotor magnetic isolation bridge is easy to deform and break in the process of assembling a rotor iron core, generates iron core slag, influences the sealing of the magnetic steel groove and the like.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a modular rotor core and motor to solve the problem of background art.
In order to achieve the above object, the utility model discloses a modular rotor core and motor's concrete technical scheme as follows:
a combined rotor core comprises a through hole rotor punching sheet, a hole sealing rotor punching sheet and a rotor core laminated rivet, wherein a first rotor weight removing groove is formed in the through hole rotor punching sheet, and a second rotor weight removing groove is formed in the hole sealing rotor punching sheet;
the first rotor weight-removing groove and the second rotor weight-removing groove are arranged in a hole-aligning mode, any end faces of the hole-sealed rotor punching sheet and the through-hole rotor punching sheet are stacked, the rotor core is stacked and riveted to fix the through-hole rotor punching sheet and the hole-sealed rotor punching sheet together, and therefore the combined rotor core is formed.
Furthermore, the first rotor weight-removing grooves and the second rotor weight-removing grooves are multiple, the first rotor weight-removing grooves are annularly distributed on the through hole rotor punching sheets, and the second rotor weight-removing grooves are annularly distributed on the hole sealing rotor punching sheets.
Furthermore, a plurality of rotor punching sheet magnetic steel grooves are further formed in the periphery of the first rotor weight removing groove in the through hole rotor punching sheet, and a rotor magnetic isolation bridge is formed between every two adjacent rotor punching sheet magnetic steel grooves.
Furthermore, the through-hole rotor punching has more than two and superposes each other, and every through-hole rotor punching and hole sealing rotor punching all laminate with the axle center each other and connect, the hole sealing rotor punching shelters from the rotor punching magnetic steel groove of arbitrary one side on the through-hole rotor punching.
Furthermore, every two rotor punching sheet magnetic steel grooves are in one group, the two rotor punching sheet magnetic steel grooves in the group are distributed on the through hole rotor punching sheet in a V shape, and an annular structure is formed by the group and the group.
Further, the rotor core is laminated and riveted into a rod-shaped structure, and the rotor core is laminated and riveted and simultaneously inserted into the through hole rotor punching sheet and the hole sealing rotor punching sheet, so that the rotor core and the hole sealing rotor punching sheet are fixedly connected together.
Furthermore, a plurality of first rotor fastening and riveting points are arranged on the through hole rotor punching sheet, and a plurality of second rotor fastening and riveting points are arranged on the hole sealing rotor punching sheet.
Furthermore, an annular structure is formed among the first rotor fastening and riveting points, an annular structure is formed among the second rotor fastening and riveting points, and the number of the first rotor fastening and riveting points is the same as that of the second rotor fastening and riveting points.
Furthermore, at least two groups of annular structures are formed among the first rotor fastening points, at least two groups of annular structures are formed among the second rotor fastening points, and the groups are concentrically arranged.
An electric machine comprises a stator and a rotor, wherein the rotor comprises the combined rotor core.
Compared with the prior art, the utility model discloses following beneficial effect has:
1. the novel permanent magnet motor rotor core is characterized in that a groove-shaped non-through scattered sheet is overlapped at any end of the rotor core, so that a hole sealing structure is formed at one end of the rotor core, and a combined rotor core is formed.
2. The hole sealing structure punching sheet and the through hole punching sheet are tightly riveted together, so that the strength of the end part of the rotor core is improved, and the deformation of each groove shape and the magnetic isolation bridge of the permanent magnet rotor is reduced.
3. The rotor core with the new structure realizes the self-sealing of the magnetic steel slot, is more favorable for fixing the magnetic steel in the magnetic steel slot, improves the integral strength of the rotor, reduces the initial unbalance amount of the rotor, improves the production efficiency of the rotor, and cancels the coating of sealing silica gel.
4. The rotor core with the new structure respectively improves the strength of the rotor and the compactness among all parts, and effectively reduces the fixed frequency noise of the whole machine operation.
Drawings
FIG. 1 is a schematic view of a through-hole rotor sheet in the structure of the present invention;
FIG. 2 is a schematic view of a hole-sealed rotor sheet in the structure of the present invention;
FIG. 3 is a schematic view of a combination of a plurality of through-hole rotor laminations and a hole-sealed rotor lamination;
FIG. 4 is a perspective view of the oblique explosion of the structure of the present invention;
FIG. 5 is a front perspective exploded view of the structure of the present invention;
fig. 6 is a front explosion plan view of the structure of the present invention;
FIG. 7 is a solid frequency spectrum of a through hole rotor lamination;
fig. 8 is a solid frequency spectrum of the hole-sealed rotor punching sheet.
The reference numbers in the figures illustrate: the rotor punching sheet comprises a through hole rotor punching sheet 1, a hole sealing rotor punching sheet 2 and a rotor core laminated rivet 3; the rotor punching sheet comprises a rotor punching sheet magnetic steel groove 11, a rotor magnetic isolation bridge 12, a first rotor weight removal groove 13 and a first rotor riveting point 14; a second rotor deduplication slot 21, a second rotor staking point 22.
Detailed Description
For a better understanding of the objects, structure and function of the invention, reference should be made to the drawings, FIGS. 1-8, which are included to illustrate the invention.
The permanent magnet motor rotor core magnet steel slot of general production designs for full through-hole structure, and a plurality of heavy grooves or supports of removing of rotor core design reduce rotor core and separate magnetic width, reduce design such as rotor magnetic leakage, all do not do benefit to the implementation of back production process to technological requirements such as embedment or moulding plastics to the rotor.
And the utility model discloses a rotor core structure adopts through-hole rotor towards the mode that 1, hole sealing rotor towards piece 2 combined together, constitutes the rotor core of 1 brand-new structure, has both guaranteed the magnetic performance requirement of design, has also solved the problem in the production process. The structure of the rotor punching sheet comprises at least one through-hole rotor punching sheet 1, a hole-sealed rotor punching sheet 2 and a rotor core laminated rivet 3, wherein the through-hole rotor punching sheet 1 is provided with a plurality of mutually superposed through-hole rotor punching sheets, a first rotor weight-removing groove 13 is formed in the through-hole rotor punching sheet 1, and a second rotor weight-removing groove 21 is formed in the hole-sealed rotor punching sheet 2. The hole-sealed rotor punching sheets 2 are stacked at the end 1 of the rotor core, and the stacking is not limited to 1 or more hole-sealed rotor punching sheets 2 under the condition of ensuring the strength and the sealing effect of the rotor core. The hole-sealed rotor punching sheet 2 can be polygonal in shape, and is not limited to magnetic steel groove sealing, weight-removing groove sealing and the like.
The first rotor weight-removing groove 13 and the second rotor weight-removing groove 21 are arranged in a hole pair mode, any end face of the hole-sealed rotor punching sheet 2 and any end face of the hole-sealed rotor punching sheet 1 are stacked, and the rotor core is overlapped and riveted with the through hole-sealed rotor punching sheet 2 through the 3-layer rivet, so that the combined rotor core is formed. The periphery of a first rotor weight-removing groove 13 on the through-hole rotor punching sheet 1 is also provided with a plurality of rotor punching sheet magnetic steel grooves 11, and a rotor magnetic isolation bridge 12 is formed between every two adjacent rotor punching sheet magnetic steel grooves 11. Every two rotor punching magnetic steel grooves 11 are in a group, the two rotor punching magnetic steel grooves 11 in the group are distributed on the through hole rotor punching 1 in a V shape, and an annular structure is formed by the group and the group. The newly designed rotor core has the end 1 sealed with the hole-sealed rotor sheet 2 to the rotor sheet magnetic steel groove 11, so that the groove-shaped self-sealing is realized, and the strength of the rotor core assembly surface is enhanced.
This design application is towards the structure and the intensity of piece self, and at rotor core forming process, according to iron core overall dimension and towards piece self intensity demand, the hole sealing groove structure is designed towards the lamination riveting quantity on the iron core of piece, and the piece of punching of hole sealing groove structure can be folded at the iron core arbitrary end, realizes the iron core flute profile wherein 1 end the self sealss, solves motor operation resonance noise and iron core simultaneously and separates magnetic groove deformation and fracture scheduling problem in turnover, assembly process.
As shown in fig. 3, more than two through-hole rotor punching sheets 1 are stacked with each other, each through-hole rotor punching sheet 1 and each hole-sealed rotor punching sheet 2 are coaxially attached and connected with each other, and the hole-sealed rotor punching sheet 2 shields the rotor punching sheet magnetic steel groove 11 on any surface of the through-hole rotor punching sheet 1. The first rotor weight-reducing grooves 13 and the second rotor weight-reducing grooves 21 are multiple in number, the first rotor weight-reducing grooves 13 are distributed on the through hole rotor punching sheet 1 in an annular mode, and the second rotor weight-reducing grooves 21 are distributed on the hole sealing rotor punching sheet 2 in an annular mode. The rotor core laminated rivet 3 is of a rod-shaped structure, and the rotor core laminated rivet 3 is inserted into the through hole rotor punching sheet 1 and the hole sealing rotor punching sheet 2 simultaneously, so that the rotor core laminated rivet and the hole sealing rotor punching sheet are fixedly connected together. The low magnetic leakage design of the through-hole iron core magnetic isolation bridge 12 is ensured, meanwhile, the strength of the position of the iron core magnetic isolation bridge 12 is improved, and the phenomena of iron core deformation/fracture and the like are solved.
As shown in fig. 1, the through-hole rotor sheet 1 is provided with a plurality of first rotor fastening points 14, and as shown in fig. 2, the hole-sealed rotor sheet 2 is provided with a plurality of second rotor fastening points 22. An annular structure is formed among the first rotor riveting points 14, an annular structure is formed among the second rotor riveting points 22, and the number of the first rotor riveting points 14 is the same as that of the second rotor riveting points 22. At least two groups of annular structures are formed among the first rotor riveting points 14, at least two groups of annular structures are formed among the second rotor riveting points 22, and the groups are all concentrically arranged.
The combined rotor core is used on a motor, and the motor is designed and comprises a stator and a rotor, wherein the rotor comprises the combined rotor core. When the rotor core is subjected to encapsulation or injection molding in the rotor punching sheet magnetic steel groove 11, the encapsulation glue or the plastic package material does not overflow to the outer circle of the rotor core or the positions of the weight-removing groove/bracket hole and the like close to the shaft hole, the groove-shaped self-sealing state of the rotor core is realized, the production cost is reduced, and the production efficiency is improved. The inslot embedment or mould plastics more evenly, full, make magnet steel and iron core groove sealed more firmly, the effectual resonance point of keeping away the motor operation process solves the resonance noise of motor, improves motor operation quality.
The newly designed rotor core improves the strength of the rotor excircle rotor magnetic isolation bridge 12 position, does not deform or break in the production and turnover process, and solves the problems of sealing, deformation, edge wiping and the like caused by the bridge break of the rotor magnetic isolation bridge 12 and synchronization.
As shown in fig. 7, the through-hole rotor has a fixed frequency spectrum, and the rotor has fixed frequency vibration from 500HZ to 1400 HZ; in the experiment, the motor is found to have squeaking noise in the interval of 500HZ to 1200 HZ. The hole-sealing rotor punching sheet 2 is added at one end of the rotor, so that the overall strength of the rotor is improved, the fixed frequency vibration of the rotor is avoided, and the squealing noise of the motor in the range of 500HZ to 1200HZ is avoided;
as shown in fig. 8, the sealed rotor fixed frequency spectrum has a range of rotor fixed frequency vibration from 500HZ to 1400HZ, and the lift is concentrated at 1500 HZ. In experiments, the motor is found to have no obvious squeal noise in the interval of 500HZ to 1200 HZ.
It is to be understood that the present invention has been described with reference to certain embodiments, and that various changes or equivalents may be substituted for elements thereof by those skilled in the art without departing from the spirit and scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from the essential scope thereof. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of the present application are intended to be covered by the present invention.
Claims (10)
1. A modular rotor core, its characterized in that: the rotor punching sheet structure comprises a through-hole rotor punching sheet (1), a hole-sealed rotor punching sheet (2) and a rotor core laminated rivet (3), wherein a first rotor weight-removing groove (13) is formed in the through-hole rotor punching sheet (1), and a second rotor weight-removing groove (21) is formed in the hole-sealed rotor punching sheet (2);
the hole sealing rotor punching sheet is characterized in that the first rotor weight removing groove (13) and the second rotor weight removing groove (21) are arranged in a hole aligning mode, any end face of the hole sealing rotor punching sheet (2) and any end face of the through hole rotor punching sheet (1) are stacked, the rotor core is overlapped and riveted (3) to fix the through hole rotor punching sheet (1) and the hole sealing rotor punching sheet (2) together, and therefore the combined rotor core is formed.
2. The combined rotor core according to claim 1, wherein the first rotor weight-removing grooves (13) and the second rotor weight-removing grooves (21) are multiple, the first rotor weight-removing grooves (13) are annularly distributed on the through-hole rotor punching sheet (1), and the second rotor weight-removing grooves (21) are annularly distributed on the hole-sealed rotor punching sheet (2).
3. The combined rotor core according to claim 1, wherein a plurality of rotor sheet magnetic steel grooves (11) are further formed in the periphery of the first rotor weight-removing groove (13) in the through-hole rotor sheet (1), and a rotor magnetic isolation bridge (12) is formed between adjacent rotor sheet magnetic steel grooves (11).
4. The combined rotor core according to claim 3, wherein more than two through-hole rotor punching sheets (1) are stacked on each other, each through-hole rotor punching sheet (1) and each hole-sealed rotor punching sheet (2) are coaxially attached to each other, and the hole-sealed rotor punching sheets (2) shield the rotor punching sheet magnetic steel grooves (11) on any surface of the through-hole rotor punching sheets (1).
5. The combined rotor core according to claim 4, wherein every two rotor sheet magnetic steel grooves (11) form a group, the two rotor sheet magnetic steel grooves (11) in the group are distributed on the through hole rotor sheet (1) in a V shape, and an annular structure is formed by the group and the group.
6. The combined rotor core according to claim 1, wherein the rotor core laminated rivet (3) is of a rod-like structure, and the rotor core laminated rivet (3) is simultaneously inserted into the through-hole rotor punching sheet (1) and the hole-sealed rotor punching sheet (2) so as to be fixedly connected together.
7. The combined rotor core according to claim 6, wherein the through-hole rotor punching (1) is provided with a plurality of first rotor fastening points (14), and the hole-sealed rotor punching (2) is provided with a plurality of second rotor fastening points (22).
8. The modular rotor core according to claim 7, wherein a ring-like structure is formed between a plurality of said first rotor staking points (14), a ring-like structure is formed between a plurality of said second rotor staking points (22), and the number of first rotor staking points (14) and second rotor staking points (22) is the same.
9. The modular rotor core according to claim 7, wherein at least two sets of annular structures are formed between the first plurality of rotor staking points (14), at least two sets of annular structures are formed between the second plurality of rotor staking points (22), and the sets are concentrically arranged.
10. An electrical machine comprising a stator and a rotor, wherein the rotor comprises a composite rotor core as claimed in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020082974.XU CN211508746U (en) | 2020-01-15 | 2020-01-15 | Combined rotor core and motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020082974.XU CN211508746U (en) | 2020-01-15 | 2020-01-15 | Combined rotor core and motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211508746U true CN211508746U (en) | 2020-09-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020082974.XU Active CN211508746U (en) | 2020-01-15 | 2020-01-15 | Combined rotor core and motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211508746U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116388485A (en) * | 2023-04-25 | 2023-07-04 | 广东高畅智能液压科技有限公司 | Sealing method of rotor and rotor |
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2020
- 2020-01-15 CN CN202020082974.XU patent/CN211508746U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116388485A (en) * | 2023-04-25 | 2023-07-04 | 广东高畅智能液压科技有限公司 | Sealing method of rotor and rotor |
| CN116388485B (en) * | 2023-04-25 | 2023-11-17 | 广东高畅智能液压科技有限公司 | Sealing method of rotor and rotor |
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