CN112583155A - Single-phase brushless direct current motor - Google Patents
Single-phase brushless direct current motor Download PDFInfo
- Publication number
- CN112583155A CN112583155A CN202011211839.1A CN202011211839A CN112583155A CN 112583155 A CN112583155 A CN 112583155A CN 202011211839 A CN202011211839 A CN 202011211839A CN 112583155 A CN112583155 A CN 112583155A
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- China
- Prior art keywords
- rotor
- magnetic steel
- steel sheet
- wall
- stator
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 68
- 239000010959 steel Substances 0.000 claims abstract description 68
- 230000000670 limiting effect Effects 0.000 claims abstract description 24
- 238000004804 winding Methods 0.000 claims abstract description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 8
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 230000005389 magnetism Effects 0.000 abstract description 16
- 230000000694 effects Effects 0.000 abstract description 6
- 238000012423 maintenance Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000002829 reductive effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 230000036961 partial effect Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2706—Inner rotors
- H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
- H02K1/274—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
- H02K1/2753—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets the rotor consisting of magnets or groups of magnets arranged with alternating polarity
- H02K1/278—Surface mounted magnets; Inset magnets
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/14—Stator cores with salient poles
- H02K1/146—Stator cores with salient poles consisting of a generally annular yoke with salient poles
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/28—Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The invention discloses a single-phase brushless direct current motor, which comprises a stator and a rotor positioned in the stator, wherein the rotor comprises: the stator includes a stator core, and stator core's inner wall is provided with tooth portion, and the winding has stator winding on the tooth portion, the rotor includes a rotor core, and rotor core's outer wall is equipped with the magnet steel groove, and the inner wall in magnet steel groove inlays and is equipped with the magnetism steel sheet, runs through on the rotor core and is provided with the motor shaft, still including pressing from both sides the cover, it is provided with the locating pin to run through on the clamp cover, and the locating pin is with the constant head tank joint on the rotor core. According to the brushless direct current motor, the magnetic steel sheet of the embedded mounting structure is adopted, the rotor can be conveniently disassembled and assembled, the flexibility of disassembling and assembling the rotor is improved, the end face clamping effect of the clamping sleeve is combined, the limiting clamping effect can be achieved on the two ends of the magnetic steel sheet, the position stability of the magnetic steel sheet is ensured, the phenomenon that the magnetic steel sheet is displaced and even thrown out is prevented, and the stability of the brushless direct current motor is improved.
Description
Technical Field
The invention relates to the technical field of brushless direct current motors, in particular to a single-phase brushless direct current motor.
Background
The motor is widely applied to various electrical equipment in industrial production and life, the existing motor can be divided into a direct current motor and an alternating current motor, wherein the brushless direct current motor is widely applied to electrical equipment such as an electric fan and provides great convenience for the life of people.
However, the rotor structure of the existing brushless direct current motor is relatively integrated, so that the connection structure between the rotor core and the magnetic steel sheet cannot be quickly and conveniently disassembled and assembled, and therefore when the motor rotor breaks down and needs to be maintained, the motor rotor cannot be quickly and flexibly disassembled and maintained, the maintenance workload of the brushless direct current motor is increased, and the operation flexibility of the brushless direct current motor is reduced.
Disclosure of Invention
The invention aims to solve the defects in the prior art, and provides a single-phase brushless direct current motor which can be used for quickly and flexibly assembling and disassembling a motor rotor and reducing the maintenance operation burden.
In order to achieve the purpose, the invention adopts the following technical scheme: a single-phase brushless dc motor comprising a stator, and a rotor located within the stator:
the stator comprises a stator iron core, the inner wall of the stator iron core is provided with a tooth part, and a stator winding is wound on the tooth part;
the rotor comprises a rotor core, the outer wall of the rotor core is provided with a magnetic steel groove, the inner wall of the magnetic steel groove is embedded with a magnetic steel sheet, and a motor shaft penetrates through the rotor core;
the rotor core positioning device is characterized by further comprising a clamping sleeve, wherein a positioning pin penetrates through the clamping sleeve and is clamped with a positioning groove in the rotor core.
As a further description of the above technical solution:
the inner wall of the jacket is provided with assembling blocks at equal angles;
the end face of the magnetic steel sheet is provided with an assembly groove;
the clamping sleeve is connected with the magnetic steel sheet through the embedded clamping connection of the assembling block and the assembling groove.
As a further description of the above technical solution:
limiting grooves are symmetrically formed in the inner walls of the vertical ends of the two sides of the magnetic steel groove;
the outer walls of the vertical ends at two sides of the magnetic steel sheet are symmetrically provided with limiting blocks;
the magnetic steel sheet is connected with the magnetic steel groove through the embedded clamping of the limiting block and the limiting groove.
As a further description of the above technical solution:
the number of the jackets is two, and the two jackets are respectively positioned at two ends of the rotor iron core;
the outer diameters of the two clamping sleeves are smaller than the outer diameter of the rotor iron core.
As a further description of the above technical solution:
the bottom of the tooth part is provided with two pole shoes with symmetrical structures, and the outer wall of one side of each pole shoe, which is far away from the rotor, is of an arc structure.
As a further description of the above technical solution:
the pole shoe is provided with a plurality of lugs on the outer wall of one side close to the outer wall of the rotor, and the width of the lugs is increased in sequence.
As a further description of the above technical solution:
the outer wall of the magnetic steel sheet exposed outside the magnetic steel groove is of an arc-shaped protruding structure, and the arc-shaped protruding part of the magnetic steel sheet is not in contact with the protruding block.
As a further description of the above technical solution:
the cross sections of the limiting blocks and the limiting grooves are of semi-arc structures;
the outer diameter of the limiting block is consistent with the inner diameter of the limiting groove.
The invention provides a single-phase brushless direct current motor. The method has the following beneficial effects:
this brushless DC motor adopts embedded mounting structure's magnetic steel piece, can carry out quick convenient dismouting operation to the rotor, improves the flexibility of rotor dismouting to combine the terminal surface centre gripping protective effect who presss from both sides the cover, can play the effect of spacing centre gripping to the both ends of magnetic steel piece, ensure the stability of magnetic steel piece position, prevent that the magnetic steel piece from taking place the phenomenon that the displacement was thrown away even, and then improved brushless DC motor's operating stability.
Drawings
Fig. 1 is a schematic cross-sectional view of a single-phase brushless dc motor according to the present invention;
FIG. 2 is a schematic view of a partial structure of a connection portion between a stator core and a tooth portion according to the present invention;
FIG. 3 is a schematic cross-sectional view of a rotor core according to the present invention;
FIG. 4 is a schematic structural view of a magnetic steel sheet according to the present invention;
FIG. 5 is a schematic view showing the structure of a jacket according to the present invention.
Illustration of the drawings:
1. a stator; 11. a stator core; 111. a tooth portion; 112. a pole shoe; 113. a bump; 12. a stator winding; 2. a rotor; 21. a rotor core; 211. a magnetic steel groove; 212. a limiting groove; 213. positioning a groove; 22. a magnetic steel sheet; 221. assembling a groove; 222. a limiting block; 23. a jacket; 231. assembling the block; 232. positioning pins; 3. a motor shaft.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
As shown in fig. 1, 2, 3 and 5, a single-phase brushless dc motor includes a stator 1, and a rotor 2 located inside the stator 1:
the stator 1 comprises a stator core 11, a tooth part 111 is arranged on the inner wall of the stator core 11, and a stator winding 12 is wound on the tooth part 111;
the rotor 2 comprises a rotor core 21, the outer wall of the rotor core 21 is provided with a magnetic steel groove 211, the inner wall of the magnetic steel groove 211 is embedded with a magnetic steel sheet 22, and the rotor core 21 is provided with a motor shaft 3 in a penetrating way;
still include the clamp cover 23, the last penetration of clamp cover 23 is provided with locating pin 232, and locating pin 232 and the constant head tank 213 joint on rotor core 21.
In this embodiment, imbed magnetism steel sheet 22 in the magnetism steel groove 211 on rotor core 21 one by one, realize the nimble dismouting effect of magnetism steel sheet 22, then place two clamp covers 23 at the both ends face of rotor 2, and enter into constant head tank 213 internal fixation after penetrating clamp cover 23 with locating pin 232, can be with the stable terminal surface of installing at rotor 2 of clamp cover 23, play the effect of spacing centre gripping to magnetism steel sheet 22, prevent that magnetism steel sheet 22 from taking place to rock the condition that drops even, improved brushless DC motor's operating stability.
As shown in fig. 4 and 5, the inner wall of the jacket 23 is provided with an assembly block 231 at an equal angle, the end face of the magnetic steel sheet 22 is provided with an assembly groove 221, and the jacket 23 is connected with the magnetic steel sheet 22 by the embedded clamping of the assembly block 231 and the assembly groove 221, so that the jacket 23 can be positioned and clamped with each magnetic steel sheet 22, and the stability of each magnetic steel sheet 22 in the magnetic steel groove 211 is ensured.
As shown in fig. 3 and 4, the both sides vertical end inner wall symmetry of magnetism steel slot 211 is equipped with spacing groove 212, the both sides vertical end outer wall symmetry of magnetism steel sheet 22 is provided with stopper 222, embedded joint through stopper 222 and spacing groove 212, be connected magnetism steel sheet 22 and magnetism steel slot 211, can insert the in-process in the magnetism steel slot 211 to magnetism steel sheet 22, play the effect of spacing centre gripping to magnetism steel sheet 22, make magnetism steel sheet 22 can with the stable contact block in magnetism steel slot 211, further prevent that magnetism steel sheet 22 from taking place the phenomenon of rocking.
As shown in fig. 1, the number of the jackets 23 is two, the two jackets 23 are respectively located at two ends of the rotor core 21, and the outer diameters of the two jackets 23 are smaller than the outer diameter of the rotor core 21, so that the jackets 23 are prevented from completely sealing the end surfaces of the magnetic steel sheets 22 at two sides, and the mounting and dismounting operations of the jackets 23 are facilitated.
As shown in fig. 2, the bottom end of the tooth portion 111 is provided with two pole shoes 112 with symmetrical structures, and the outer wall of one side of the pole shoe 112, which is far away from the rotor 2, is of an arc-shaped structure, the outer wall of one side of the pole shoe 112, which is close to the outer wall of the rotor 2, is provided with a plurality of bumps 113, the widths of the bumps 113 are sequentially increased, the direction in which the width of the bump 113 is increased is consistent with the direction in which the rotor 2 rotates, a gradually decreasing air gap can be formed between the pole shoe 112 and the rotor 2, the starting torque of the motor is reduced, and the starting.
As shown in fig. 1, the outer wall of the magnetic steel sheet 22 exposed outside the magnetic steel slot 211 is an arc-shaped protrusion structure, and the arc-shaped protrusion of the magnetic steel sheet 22 is not in contact with the protrusion 113, so that the smoothness of the air gap is ensured, and the magnetic circuit is not affected.
As shown in fig. 4 and 5, the cross sections of the limiting block 222 and the limiting groove 212 are both semi-circular arc structures, and the outer diameter of the limiting block 222 is consistent with the inner diameter of the limiting groove 212, so that the limiting block 222 is in a close contact state when being embedded into the limiting groove 212, and unnecessary gaps between the magnetic steel sheet 22 and the magnetic steel groove 211 are avoided.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (8)
1. A single-phase brushless dc motor, comprising a stator (1), and a rotor (2) located inside the stator (1), characterized in that:
the stator (1) comprises a stator iron core (11), a tooth part (111) is arranged on the inner wall of the stator iron core (11), and a stator winding (12) is wound on the tooth part (111);
the rotor (2) comprises a rotor core (21), the outer wall of the rotor core (21) is provided with a magnetic steel groove (211), the inner wall of the magnetic steel groove (211) is embedded with a magnetic steel sheet (22), and the rotor core (21) is provided with a motor shaft (3) in a penetrating manner;
the rotor core positioning device is characterized by further comprising a clamping sleeve (23), wherein a positioning pin (232) penetrates through the clamping sleeve (23), and the positioning pin (232) is clamped with a positioning groove (213) in the rotor core (21).
2. A single-phase brushless dc motor according to claim 1, wherein: the inner wall of the jacket (23) is provided with an assembly block (231) at an equal angle;
the end face of the magnetic steel sheet (22) is provided with an assembling groove (221);
the clamping sleeve (23) is connected with the magnetic steel sheet (22) through the embedded clamping connection of the assembling block (231) and the assembling groove (221).
3. A single-phase brushless dc motor according to claim 1, wherein: limiting grooves (212) are symmetrically arranged on the inner walls of the vertical ends of the two sides of the magnetic steel groove (211);
the outer walls of the vertical ends of the two sides of the magnetic steel sheet (22) are symmetrically provided with limit blocks (222);
the magnetic steel sheet (22) is connected with the magnetic steel groove (211) through the embedded clamping of the limiting block (222) and the limiting groove (212).
4. A single-phase brushless dc motor according to claim 1, wherein: the number of the jackets (23) is two, and the two jackets (23) are respectively positioned at two ends of the rotor iron core (21);
the outer diameters of the two jackets (23) are smaller than the outer diameter of the rotor iron core (21).
5. A single-phase brushless dc motor according to claim 1, wherein: the bottom end of the tooth part (111) is provided with two pole shoes (112) with symmetrical structures, and the outer wall of one side of the pole shoes (112) far away from the rotor (2) is of an arc structure.
6. A single-phase brushless dc motor according to claim 5, wherein: the outer wall of one side of the pole shoe (112) close to the outer wall of the rotor (2) is provided with a plurality of convex blocks (113), and the widths of the convex blocks (113) are sequentially increased.
7. A single-phase brushless dc motor according to claim 1, wherein: the outer wall of the magnetic steel sheet (22) exposed outside the magnetic steel groove (211) is of an arc-shaped protruding structure, and the arc-shaped protruding part of the magnetic steel sheet (22) is not in contact with the bump (113).
8. A single-phase brushless dc motor according to claim 3, wherein: the cross sections of the limiting block (222) and the limiting groove (212) are both in a semi-circular arc structure;
the outer diameter of the limiting block (222) is consistent with the inner diameter of the limiting groove (212).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011211839.1A CN112583155A (en) | 2020-11-03 | 2020-11-03 | Single-phase brushless direct current motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011211839.1A CN112583155A (en) | 2020-11-03 | 2020-11-03 | Single-phase brushless direct current motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112583155A true CN112583155A (en) | 2021-03-30 |
Family
ID=75120374
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011211839.1A Pending CN112583155A (en) | 2020-11-03 | 2020-11-03 | Single-phase brushless direct current motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112583155A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102629811A (en) * | 2012-03-05 | 2012-08-08 | 浙江亿利达风机股份有限公司 | Brushless direct current motor |
| JP2013121271A (en) * | 2011-12-08 | 2013-06-17 | Daikin Ind Ltd | Rotary electric machine |
| CN106160288A (en) * | 2016-08-29 | 2016-11-23 | 桂林星辰科技股份有限公司 | A kind of permanent-magnetic synchronous motor rotor |
| CN210640750U (en) * | 2019-11-27 | 2020-05-29 | 南京双冠磁业有限公司 | Magnetic shoe for motor convenient to fix |
| KR20200117698A (en) * | 2019-04-05 | 2020-10-14 | 주식회사 디엠에스 | Rotor for generator and apparatus for manufacturing the same |
-
2020
- 2020-11-03 CN CN202011211839.1A patent/CN112583155A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013121271A (en) * | 2011-12-08 | 2013-06-17 | Daikin Ind Ltd | Rotary electric machine |
| CN102629811A (en) * | 2012-03-05 | 2012-08-08 | 浙江亿利达风机股份有限公司 | Brushless direct current motor |
| CN106160288A (en) * | 2016-08-29 | 2016-11-23 | 桂林星辰科技股份有限公司 | A kind of permanent-magnetic synchronous motor rotor |
| KR20200117698A (en) * | 2019-04-05 | 2020-10-14 | 주식회사 디엠에스 | Rotor for generator and apparatus for manufacturing the same |
| CN210640750U (en) * | 2019-11-27 | 2020-05-29 | 南京双冠磁业有限公司 | Magnetic shoe for motor convenient to fix |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210330 |
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| RJ01 | Rejection of invention patent application after publication |