CN204290543U - The stator insulation structure of external rotor electric machine - Google Patents
The stator insulation structure of external rotor electric machine Download PDFInfo
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- CN204290543U CN204290543U CN201420798567.3U CN201420798567U CN204290543U CN 204290543 U CN204290543 U CN 204290543U CN 201420798567 U CN201420798567 U CN 201420798567U CN 204290543 U CN204290543 U CN 204290543U
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- stator core
- teeth
- insulating barrier
- notch
- teeth portion
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Abstract
The utility model discloses a kind of stator insulation structure of external rotor electric machine, comprise stator core, coil windings and insulating barrier, stator core comprises yoke portion and teeth portion, described yoke portion is annular, the excircle being arranged in yoke portion of multiple teeth portion rule, between adjacent two teeth portion, form teeth groove, coil windings is embedded in the teeth portion around stator core between teeth groove; Insulating barrier is formed by injection moulding between stator core end and teeth groove, insulating barrier forms arc convex at notch place, the outerplanar of arc convex and the plane parallel of stator core notch, and the utility model has the artificial participation of minimizing, improve winding efficiency, increase the beneficial effect of security reliability.
Description
Technical field
The utility model relates to a kind of stator insulation structure of external rotor electric machine.
Background technology
The stator of external rotor electric machine generally comprises stator core and coil windings, and form teeth groove between adjacent two teeth portion of stator core, at the end face of stator core and the inside of teeth groove, insulating paper is housed, coil windings imbeds the teeth portion being wrapped in stator core between teeth groove.The external rotor unit stator of this structure, needed the installation manually first carrying out skeleton and insulating paper before coiling, made that winding efficiency is low, cost of labor is high and easily occurred that hanging wire causes turn-to-turn short circuit; On the other hand, coil winding wound in the teeth portion of stator core, because the number of turn of coil windings easily to skid off compared with multi-coil and creepage distance between coil and notch is short, dangerous.
Summary of the invention
The purpose of this utility model is the stator insulation structure providing the external rotor electric machine that a kind of winding efficiency is high, fail safe is high for the deficiencies in the prior art.
In order to realize above object, the utility model have employed following technical scheme: a kind of stator insulation structure of external rotor electric machine, comprise stator core, coil windings and insulating barrier, stator core comprises yoke portion and teeth portion, the excircle being arranged in yoke portion of multiple teeth portion rule, between adjacent two teeth portion, form teeth groove, coil windings is embedded in the teeth portion around stator core between teeth groove; Between stator core upper and lower end parts and teeth groove, form insulating barrier by injection moulding, insulating barrier forms arc convex at notch place, the outerplanar of arc convex and the plane parallel of stator core notch; The width L1 of stator core notch is 1.5mm ~ 6mm; The peak of notch arc convex and the distance L2 of teeth portion outer face are 2mm ~ 10mm.
Insulating barrier of the present utility model utilizes isolation material injection moulding to be coated on the winding portion of stator core, and the insulating barrier being coated on stator core is as a whole, fit tightly on stator core, compare the stator insulation structure of existing external rotor electric machine, decrease to need when manufacturing insulation system to participate in artificial and winding efficiency is higher; Meanwhile, insulating barrier forms arc convex at notch place, increases the creepage distance of coil, increases the fail safe of motor stator for outer rotator; According to more than, the stator insulation structure of external rotor electric machine of the present utility model has and reduces artificial participation, improves winding efficiency, increases the beneficial effect of security reliability.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation;
Fig. 2 is partial cutaway schematic of the present utility model;
Fig. 3 is the B place enlarged drawing in Fig. 1.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
The stator insulation structure of external rotor electric machine as shown in Figure 1 to Figure 3, comprises stator core 1, coil windings and insulating barrier 2.Stator core 1 overall structure is similar to spline, comprise the yoke portion 11 of annular and multiple teeth portion 12 for being wound around wire (being generally copper wire), the excircle being arranged in yoke portion 11 of multiple teeth portion 12 rule, between adjacent two teeth portion 12, form teeth groove 13, coil windings is embedded in the teeth portion 12 around stator core 1 between teeth groove 13.Between the end of stator core 1 and teeth groove 13, utilize ambroin injection moulding to form a layer insulating 2, the ambroin being coated on each (except notch face) and stator core 1 upper and lower side in teeth groove 13 links together as a whole.The stator insulation structure of the external rotor electric machine of this kind of structure, make stator core 1 coiling with one deck ambroin by stator core 1 integral molded plastic, ambroin and stator core 1 are closely linked, thus reach the artificial participation of minimizing, improve coiling production efficiency.And in the present embodiment, the yoke portion of stator core and teeth portion, by die-cut integrally formed, save production cost, easily manufactured.
Teeth portion 12 is generally the structure of similar T-shaped, the end of two adjacent teeth portion 12 segment distance of being separated by forms the notch of teeth groove 13, insulating barrier 2 forms the arc convex 3 bent to the yoke portion 11 of stator core 1 in the position of notch, the outerplanar X of arc convex 3 is parallel with the plane Y of stator core 1 notch and be positioned at same level, slot opening L1 is 1.5mm ~ 6mm, and the distance L2 of the outer face of the peak of notch arc convex 3 and the teeth portion 12 of stator core 1 is 2mm ~ 10mm.This structure is the creepage distance in order to increase between coil and notch, increases the security reliability of the stator of the utility model external rotor electric machine.
Claims (1)
1. the stator insulation structure of an external rotor electric machine, comprise stator core, coil windings and insulating barrier, it is characterized in that, stator core comprises yoke portion and teeth portion, described yoke portion is annular, the excircle being arranged in yoke portion of multiple teeth portion rule, between adjacent two teeth portion, form teeth groove, coil windings is embedded in the teeth portion around stator core between teeth groove; Between stator core upper and lower end parts and teeth groove, form insulating barrier by injection moulding, insulating barrier forms arc convex at notch place, the outerplanar of arc convex and the plane parallel of stator core notch; The width L1 of stator core notch is 1.5mm ~ 6mm; The peak of notch arc convex (3) and the distance L2 of teeth portion outer face are 2mm ~ 10mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420798567.3U CN204290543U (en) | 2014-12-17 | 2014-12-17 | The stator insulation structure of external rotor electric machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420798567.3U CN204290543U (en) | 2014-12-17 | 2014-12-17 | The stator insulation structure of external rotor electric machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204290543U true CN204290543U (en) | 2015-04-22 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420798567.3U Active CN204290543U (en) | 2014-12-17 | 2014-12-17 | The stator insulation structure of external rotor electric machine |
Country Status (1)
| Country | Link |
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| CN (1) | CN204290543U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107612175A (en) * | 2017-09-25 | 2018-01-19 | 珠海凯邦电机制造有限公司 | Insulation framework and there is its stator module |
| CN107846098A (en) * | 2017-10-24 | 2018-03-27 | 珠海凯邦电机制造有限公司 | Stator structure and motor |
| CN107947426A (en) * | 2017-12-29 | 2018-04-20 | 杭州微光电子股份有限公司 | Motor stator for outer rotator and outer rotor blower fan |
| CN108631475A (en) * | 2018-06-21 | 2018-10-09 | 惠而浦（中国）股份有限公司 | A kind of insulation system of motor stator core |
-
2014
- 2014-12-17 CN CN201420798567.3U patent/CN204290543U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107612175A (en) * | 2017-09-25 | 2018-01-19 | 珠海凯邦电机制造有限公司 | Insulation framework and there is its stator module |
| CN107846098A (en) * | 2017-10-24 | 2018-03-27 | 珠海凯邦电机制造有限公司 | Stator structure and motor |
| CN107947426A (en) * | 2017-12-29 | 2018-04-20 | 杭州微光电子股份有限公司 | Motor stator for outer rotator and outer rotor blower fan |
| CN108631475A (en) * | 2018-06-21 | 2018-10-09 | 惠而浦（中国）股份有限公司 | A kind of insulation system of motor stator core |
| CN108631475B (en) * | 2018-06-21 | 2023-12-22 | 惠而浦（中国）股份有限公司 | Insulation structure of stator core for motor |
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