CN204761192U - External rotor electric machine - Google Patents
External rotor electric machine Download PDFInfo
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- CN204761192U CN204761192U CN201520465546.4U CN201520465546U CN204761192U CN 204761192 U CN204761192 U CN 204761192U CN 201520465546 U CN201520465546 U CN 201520465546U CN 204761192 U CN204761192 U CN 204761192U
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- external rotor
- electric machine
- stator
- rotor electric
- stator core
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- Permanent Field Magnets Of Synchronous Machinery (AREA)
- Permanent Magnet Type Synchronous Machine (AREA)
Abstract
The utility model discloses an external rotor electric machine, including stator module and external rotor, the cavity the inside in the middle of the external rotor is located to the stator module cover, wherein the external rotor includes a plurality of permanent magnets along circumference interval distribution, stator module includes stator core, insulating and the coil winding of tip, the tip insulation is installed on stator core's terminal surface, the coil winding coiling is on the tip is insulating, stator core is last to be provided with a plurality of rule grooves, every rule groove open -ended circumference angle is A, the circumference angle of being separated by between two adjacent permanent magnets is B, an is greater than or equal to 5, B is greater than or equal to 5, a structure is simple, the motor performance gets a promotion.
Description
Technical field:
The utility model relates to a kind of external rotor electric machine, belongs to technical field of motors.
Background technology:
In present external rotor electric machine, stator module comprises stator core, overhang insulation and coil windings, overhang insulation is arranged on the end face of stator core, coil windings is wound on overhang insulation, stator core comprises the ring-shaped yoke portion being provided with axis hole and the some stator teeths stretched out toward outside ring-shaped yoke portion outer rim, form line embedding groove between two adjacent stator teeths, external rotor comprises the casing sleeve being provided with cavity and the some permanent magnets be arranged on casing sleeve lining face.
Existing external rotor electric machine adopts the technical scheme that permanent magnet interval is little, line embedding groove notch is little usually, but be through long-term research, experiment finds, there is obviously leakage field phenomenon in the program, larger on the impact of motor performance, and, there is the phenomenon of waste material in the little raw material that can increase stator punching to a certain extent of line embedding groove notch.
Summary of the invention:
The purpose of this utility model is to provide a kind of external rotor electric machine, and its structure is simple, and motor performance gets a promotion.
The purpose of this utility model is achieved by following technical proposals.
A kind of external rotor electric machine, comprise stator module and external rotor, stator module is sheathed on inside the cavity in the middle of external rotor, wherein external rotor comprises some permanent magnets circumferentially spaced apart, stator module comprises stator core, overhang insulation and coil windings, overhang insulation is arranged on the end face of stator core, coil windings is wound on overhang insulation, stator core is provided with some line embedding grooves, the circumferential angle of each line embedding groove opening is A, the circumferential angle of being separated by between two adjacent permanent magnets is B, A≤5 °, B≤5 °.
Above-mentioned 5 °≤A≤10 °, 5 °≤B≤10 °.
Thickness in the middle of above-mentioned permanent magnet is H1, and the thickness of both sides is H2, H1 > H2.
Above-mentioned H1 × 0.93≤H2.
Above-mentionedly also include base, external rotor comprises the casing sleeve being provided with cavity and the some permanent magnets be arranged on casing sleeve lining face, receiver is extended with in the middle of base, receiver is placed in the axis hole in the middle of stator core, offer bearing chamber respectively at receiver two ends, inside bearing chamber, bearing is installed, inside receiver, rotating shaft is installed, rotating shaft two ends are bearing on described bearing respectively, and rotating shaft one end is stretched out together with casing sleeve connection in the middle of receiver.
Said stator iron core comprises the ring-shaped yoke portion that centre is provided with axis hole and the some stator teeths stretched out toward outside ring-shaped yoke portion outer rim, forms line embedding groove between two adjacent stator teeths.
The number of said stator teeth portion is 12, and circumferentially interval is evenly distributed for 12 stator teeths.
The number of above-mentioned permanent magnet is 10, and circumferentially interval is evenly distributed for 10 permanent magnets.
The utility model compared with prior art, has following effect:
1) by analyzing angle B Two Variables of being separated by between line embedding groove opening angle A, permanent magnet, learn line embedding groove opening angle 5 ° time than 1 ° time magnetic property performance more superior, during 5 °≤A≤10 °, superior magnetic property can be ensured, line embedding groove opening is wide simultaneously, be beneficial to coiling, and can material usage be reduced.Angle B of being separated by between permanent magnet changes between 1 °-5 °, can ignore the impact of magnetic circuit, during 5 °≤B≤10 °, can ensure magnetic circuit, and permanent magnet interval is wide simultaneously, decreases the consumption of permanent magnet, reduces cost.
2) thickness in the middle of permanent magnet is H1, and the thickness of both sides is H2, H1 × 0.93≤H2, under the impregnable prerequisite of guarantee magnetic circuit, decreases the consumption of permanent magnet, reduces cost.
Accompanying drawing illustrates:
Fig. 1 is the stereogram of external rotor electric machine in embodiment;
Fig. 2 is the exploded view of external rotor electric machine in embodiment;
Fig. 3 is the structural representation of external rotor electric machine in embodiment;
Fig. 4 is the partial structurtes schematic diagram of external rotor electric machine in embodiment;
Fig. 5 is the structural representation of permanent magnet in embodiment.
Embodiment:
Also by reference to the accompanying drawings the utility model is described in further detail below by specific embodiment.
Embodiment one: as shown in Figure 1, Figure 2, Figure 3 and Figure 4, the present embodiment is a kind of external rotor electric machine, comprise rotating shaft 1, stator module 2, external rotor 3 and base 4, wherein circumferentially interval is evenly distributed for external rotor 3 10 permanent magnets, 32,10 permanent magnets 32 of comprising the casing sleeve 31 that is provided with cavity 310 and being arranged on casing sleeve 31 internal face.Stator module 2 is sheathed on inside cavity 310, stator module 2 comprises stator core 21, overhang insulation 22 and coil windings 23, overhang insulation 22 is arranged on the end face of stator core 21, coil windings 23 is wound on overhang insulation 22, stator core 21 comprises the ring-shaped yoke portion 211 that centre is provided with axis hole 2110 and 12 stator teeths 212 stretched out toward outside ring-shaped yoke portion 211 outer rim, circumferentially interval is evenly distributed for 12 stator teeths 212, forms line embedding groove 2120 between two adjacent stator teeths 212.Receiver 41 is extended with in the middle of base 4, receiver 41 is placed in the axis hole 2110 in the middle of stator core 21, bearing chamber 410 is offered respectively at receiver 41 two ends, bearing 5 is installed inside bearing chamber 410, rotating shaft 1 is positioned at inside receiver 41 and two ends and is bearing on described bearing 5 respectively, rotating shaft 5 one end is stretched out and is linked together with casing sleeve 31 in the middle of receiver 41, the circumferential angle of each line embedding groove 2120 opening is A, the circumferential angle of being separated by between two adjacent permanent magnets 32 is B, A≤5 °, B≤5 °.
Preferably, 5 °≤A≤10 °, 5 °≤B≤10 °, while ensureing that motor performance gets a promotion, reduce material usage, reduce production cost.
As shown in Figure 5, the thickness in the middle of permanent magnet 32 is H1, and the thickness of both sides is H2, H1 > H2, further, and H1 × 0.93≤H2.
Above embodiment is better embodiment of the present invention; but embodiments of the present invention are not limited thereto; other are any do not deviate from Spirit Essence of the present invention and principle under do change, modification, substitute, combine, simplify; be the substitute mode of equivalence, be included within protection scope of the present invention.
Claims (8)
1. an external rotor electric machine, comprise stator module (2) and external rotor (3), stator module (2) is sheathed on cavity (310) the inside in the middle of external rotor (3), wherein external rotor (3) comprises some permanent magnets circumferentially spaced apart (32), stator module (2) comprises stator core (21), overhang insulation (22) and coil windings (23), overhang insulation (22) is arranged on the end face of stator core (21), coil windings (23) is wound on overhang insulation (22), stator core (21) is provided with some line embedding grooves (2120), it is characterized in that: the circumferential angle of each line embedding groove (2120) opening is A, the circumferential angle of being separated by between two adjacent permanent magnets (32) is B, A≤5 °, B≤5 °.
2. a kind of external rotor electric machine according to claim 1, is characterized in that: 5 °≤A≤10 °, 5 °≤B≤10 °.
3. a kind of external rotor electric machine according to claim 1 and 2, is characterized in that: the thickness in the middle of permanent magnet (32) is H1, and the thickness of both sides is H2, H1 > H2.
4. a kind of external rotor electric machine according to claim 3, is characterized in that: H1 × 0.93≤H2.
5. a kind of external rotor electric machine according to claim 1 and 2, it is characterized in that: also include base (4), external rotor (3) comprises the casing sleeve (31) being provided with cavity (310) and the some permanent magnets (32) be arranged on casing sleeve (31) internal face, receiver (41) is extended with in the middle of base (4), receiver (41) is placed in the axis hole (2110) in the middle of stator core (21), bearing chamber (410) is offered respectively at receiver (41) two ends, in bearing chamber (410) the inside, bearing (5) is installed, in receiver (41) the inside, rotating shaft (1) is installed, rotating shaft (1) two ends are bearing on described bearing (5) respectively, rotating shaft (5) one end is stretched out and is linked together with casing sleeve (31) in the middle of receiver (41).
6. a kind of external rotor electric machine according to claim 5, it is characterized in that: stator core (21) comprises the ring-shaped yoke portion (211) that centre is provided with axis hole (2110) and the some stator teeths (212) stretched out toward outside ring-shaped yoke portion (211) outer rim, forms line embedding groove (2120) between two adjacent stator teeths (212).
7. a kind of external rotor electric machine according to claim 6, is characterized in that: the number of stator teeth (212) is 12, and circumferentially interval is evenly distributed for 12 stator teeths (212).
8. a kind of external rotor electric machine according to claim 7, is characterized in that: the number of permanent magnet (32) is 10, and circumferentially interval is evenly distributed for 10 permanent magnets (32).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520465546.4U CN204761192U (en) | 2015-06-30 | 2015-06-30 | External rotor electric machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520465546.4U CN204761192U (en) | 2015-06-30 | 2015-06-30 | External rotor electric machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204761192U true CN204761192U (en) | 2015-11-11 |
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ID=54475861
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520465546.4U Active CN204761192U (en) | 2015-06-30 | 2015-06-30 | External rotor electric machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204761192U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109950989A (en) * | 2019-04-30 | 2019-06-28 | 中山大洋电机股份有限公司 | A kind of external rotor electric machine |
| CN113410927A (en) * | 2021-05-24 | 2021-09-17 | 东南大学 | Modularized motor with interphase magnetic isolation capability |
-
2015
- 2015-06-30 CN CN201520465546.4U patent/CN204761192U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109950989A (en) * | 2019-04-30 | 2019-06-28 | 中山大洋电机股份有限公司 | A kind of external rotor electric machine |
| CN109950989B (en) * | 2019-04-30 | 2024-03-19 | 中山大洋电机股份有限公司 | Outer rotor motor |
| CN113410927A (en) * | 2021-05-24 | 2021-09-17 | 东南大学 | Modularized motor with interphase magnetic isolation capability |
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |