CN103051074B - Novel crossly-stacked directly-wound stator lamination structure of brushless direct-current variable-frequency motor - Google Patents
Novel crossly-stacked directly-wound stator lamination structure of brushless direct-current variable-frequency motor Download PDFInfo
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- CN103051074B CN103051074B CN201110305793.4A CN201110305793A CN103051074B CN 103051074 B CN103051074 B CN 103051074B CN 201110305793 A CN201110305793 A CN 201110305793A CN 103051074 B CN103051074 B CN 103051074B
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Abstract
The invention relates to a novel crossly-stacked-and-fastened directly-wound stator lamination structure of a brushless direct-current variable-frequency motor and belongs to the technical field of motor stator laminations. The existing stator laminations have the disadvantages of much waste and low stator slot fill factor. The novel crossly-stacked-and-fastened directly-wound stator lamination structure comprises split stator laminations. A single stator core is formed by a plurality of stator lamination small pieces in a crossly stacked and fastened way. One ends of the stator lamination small pieces are convex circular arcs and the other ends of the stator lamination small pieces are concave. Positioning salient points are arranged in the circle centers of the circular arcs at the circular-arc ends. The upper parts of the positioning salient points are convex and the lower parts of the positioning salient points are concave. The stator lamination small pieces are crossly stacked and fastened to form a strip stator core, then the strip stator core is circled to form a circular stator core and finally the head end and the tail end of the circular stator core are connected and welded to form a circular integral body. The novel crossly-stacked-and-fastened directly-wound stator lamination structure of the brushless direct-current variable-frequency motor has the advantages that the produced waste can be reduced and the slot fill factor and the electromagnetic performance of a stator are improved.
Description
Technical field
The invention belongs to motor stator punching technical field, especially relevant with a kind of stator core intersecting fastener type brushless DC variable frequency motor.
Background technology
Stator is the actionless part of motor.Stator by stator core, stator winding and support three part form.The Main Function of stator produces rotating magnetic field.
Existing stator core has multi-disc stator punching to be formed by stacking, the manufacturing process of stator punching is at silicon strip upper punch stator punching, the shape of the stator punching of conventional structure is integral type, its structure is closed-type circular, inner headed face punching contract groove is for being wound around electromagnetic wire, the waste material that the stator punching of this kind of integral type shape produces in punching process is many, is unfavorable for that motor manufacturing enterprise is cost-saving when stator punching discharge, and rear road discharge operation can only abide by the conventional and punching stator punching side by side of Xun.And the stator punching of this kind of shape, when coil winding machine is wound around electromagnetic wire, draws because electromagnetic wire is through line mouth, line mouth width gaps by coil winding machine affects, and after electromagnetic wire is wound around and terminates, both sides must exist gap, therefore the copper factor of stator punching is not high, and copper factor is only about 65%.
Traditional fraction block structure disconnects due to stator yoke, has air gap to exist, therefore produces magnetic potential of air gap, causes magnetic potential to lose.
In view of this, the stator punching of existing structure needs improvement badly.
Summary of the invention
The present invention is directed to above-mentioned prior art exist deficiency, provide a kind of have manufacturing process produce waste material few, the stator copper factor after machining is high, and effectively can improve the stator punching of motor performance.
For this reason, the invention provides following technical scheme: a kind of stator core intersecting fastener type brushless DC variable frequency motor, it is characterized in that: described stator punching is split type, single stator core is made up of the folded button of multiple stator punching small pieces intersections, one end of stator punching small pieces is protruding circular arc, the other end is spill, arc end is positioned at circular arc circle centre position and is provided with positioning convex point, this positioning convex point epirelief is recessed, the folded stator core being fastened as a bar shaped of multiple stator punching fritter intersections, then a circular stator core made by circle, a circular entirety is welded in head and the tail junction.
As improving further and supplementing such scheme, the present invention also comprises following technical characteristic:
Described two adjacent stator punching small pieces are with the center of circle of the circular arc of projection for round dot, and after rotation alpha degree, two adjacent punching small pieces close, and α=360 °/N, N is the number of one group of stator punching small pieces, the appearance that the stator core after closed can effectively prevent magnetic leakage present.
Described stator core intersects folded button by described stator punching fritter and forms a straight iron core, then insulation framework is inserted, electromagnetic wire can be wrapped on skeleton, and a circular stator core made by the stator core circle winding electromagnetic wire, in the method firm welding of head and the tail junction welding.
The stator punching small pieces at described two ends place do not arrange positioning convex point.
Described stator punching small pieces middle is also provided with button point, and this button point epirelief is recessed, the location of each stator punching small pieces during for assembling.
Manufacturing process of the present invention is: first go out the stator punching small pieces that number row meets quantitative requirement, then number row stator punching small pieces are intersected and fold button, finally being rotated by stator punching small pieces complete for folded button makes head and the tail closed, in the method firm welding of head and the tail junction welding.
Compared with the stator punching of existing structure, the present invention has following beneficial effect: 1, by the rational sorting to stator punching small pieces, can reduce waste material, and the waste material of minimizing is make original all-in-one-piece stator punching 1/3rd; 2, the copper factor of stator is improved, fold at single stator punching small pieces on the stator core fritter detained and be wound around electromagnetic wire, due to the impact (both sides are unobstructed) not by space, both sides, therefore do not affect by the outspoken footpath of line of coil winding machine, the copper factor of stator can be promoted to more than 75%; 3, coiling processing technology is simple.3, because the connected mode of the stator punching of patent of the present invention is the mode adopting intersection fastener type, reduce the air gap leakage field in stator core yoke portion, be conducive to the electromagnetic performance improving motor, the efficiency of motor improves more than 3% than traditional sectional type.
Accompanying drawing explanation
Be described in further detail with regard to patent of the present invention below in conjunction with accompanying drawing.
Fig. 1 is the structure chart of single stator punching small pieces.
Fig. 2 is the structure chart of row's stator punching small pieces composition.
Fig. 3 is the structure chart that many row's stator punching small pieces fold button.
Fig. 4 is the structure chart of stator core.
Fig. 5 is the profile of Fig. 4.
Wherein, 1, stator punching small pieces; 2, positioning convex point; 3, point is detained; 4, stator core.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail.
As shown in Figure 1, one end of stator punching small pieces 1 of the present invention is protruding circular arc, the other end is spill, arc end is positioned at circular arc circle centre position and is provided with positioning convex point 2, this positioning convex point 2 epirelief is recessed, middle is also provided with button point 3, and it is recessed that this button puts 3 epireliefs, the location of each stator punching small pieces during for assembling.
Figure 2 shows that these row's stator punching small pieces 1 by a forging press punching out.
Figure 3 shows that the folded button of many row's stator punching small pieces 1 intersections forms.
Fig. 4 is the stator core that the stator punching small pieces place of being interconnected of the present invention all rotates composition after 40 °, its head and the tail junction welding.
Manufacturing process of the present invention is: first go out the stator punching small pieces 1 that number row meets quantitative requirement, then number row stator punching small pieces 1 are intersected and fold button, finally being rotated by stator punching small pieces complete for folded button makes head and the tail closed, in the method firm welding of head and the tail junction welding.
Claims (2)
1. one kind intersects the stator core of fastener type brushless DC variable frequency motor, it is characterized in that: single stator core (4) is made up of the folded button of multiple stator punching small pieces intersections, one end of stator punching small pieces (1) is protruding circular arc, the other end is spill, arc end is positioned at circular arc circle centre position and is provided with positioning convex point (2), this positioning convex point (2) epirelief is recessed, the stator punching small pieces (1) at two ends place do not arrange positioning convex point, the folded stator core being fastened as a bar shaped of multiple stator punching small pieces intersections, then insulation framework is inserted, electromagnetic wire is wrapped on skeleton, a circular stator core made by the stator core circle winding electromagnetic wire, a circular entirety is welded in head and the tail junction, two adjacent described stator punching small pieces (1) are with the center of circle of the circular arc of projection for round dot, and after rotation alpha degree, two adjacent punching small pieces close, and α=360 °/N, N is the number of one group of stator punching small pieces.
2. a kind of stator core intersecting fastener type brushless DC variable frequency motor as claimed in claim 1, is characterized in that: described stator punching small pieces (1) middle is also provided with button point (3), and this button point (3) epirelief is recessed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110305793.4A CN103051074B (en) | 2011-10-11 | 2011-10-11 | Novel crossly-stacked directly-wound stator lamination structure of brushless direct-current variable-frequency motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110305793.4A CN103051074B (en) | 2011-10-11 | 2011-10-11 | Novel crossly-stacked directly-wound stator lamination structure of brushless direct-current variable-frequency motor |
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| Publication Number | Publication Date |
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| CN103051074A CN103051074A (en) | 2013-04-17 |
| CN103051074B true CN103051074B (en) | 2015-06-17 |
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| CN201110305793.4A Active CN103051074B (en) | 2011-10-11 | 2011-10-11 | Novel crossly-stacked directly-wound stator lamination structure of brushless direct-current variable-frequency motor |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104065183A (en) * | 2014-06-30 | 2014-09-24 | 浙江宇静电机有限公司 | Split combination type motor stator core |
| JP2019071727A (en) * | 2017-10-10 | 2019-05-09 | 株式会社テージーケー | Drive unit |
| CN108273925B (en) * | 2018-01-26 | 2023-08-15 | 宁波震裕科技股份有限公司 | Iron core stacking and riveting device with groove-shaped waste material as buckling point and operation method |
| GR1009624B (en) * | 2018-11-02 | 2019-10-23 | Λαλιζας Ανωνυμη Εταιρεια Κατασκευης Και Εμποριας Ναυτιλιακων Σωστικων Και Αθλητικων Ειδων | Sea craft thruster composed of a foldable bipartite or tripatite stator and a rotor-propeller with peripheral permanent magnets |
| CN109510334B (en) * | 2018-12-20 | 2023-10-20 | 常州神力电机股份有限公司 | Novel wind power self-adhesive stator punching sheet |
| CN109940090B (en) * | 2019-04-17 | 2024-04-30 | 珠海格力精密模具有限公司 | Automatic bonding stamping die and process in stator and rotor iron core die |
| CN112688443A (en) * | 2020-10-08 | 2021-04-20 | 郭星 | Stator punching sheet monomer, stator punching sheet and motor stator |
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| CN101359844A (en) * | 2008-09-27 | 2009-02-04 | 沈阳工业大学 | Permanent magnet wind power generator of combined stator structure |
| CN201352727Y (en) * | 2009-01-12 | 2009-11-25 | 黄振兴 | Motor iron core conformation |
| CN202282655U (en) * | 2011-10-11 | 2012-06-20 | 浙江特种电机有限公司 | Novel crosswise overlapped and fastened directly-wound stator lamination structure for brushless DC variable frequency motor |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3711111B2 (en) * | 2003-01-23 | 2005-10-26 | 三菱電機株式会社 | Linear motor |
| JP5258190B2 (en) * | 2006-12-01 | 2013-08-07 | オリエンタルモーター株式会社 | Laminated iron core structure of stepping motor |
| DE102008053094A1 (en) * | 2008-10-24 | 2010-04-29 | Schaeffler Kg | Stator segment for direct drive of e.g. drum washing machine, has two intermediate spaces arranged at distance from each other at regions of lateral plug-in sections in stator segment sheets, respectively |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101359844A (en) * | 2008-09-27 | 2009-02-04 | 沈阳工业大学 | Permanent magnet wind power generator of combined stator structure |
| CN201352727Y (en) * | 2009-01-12 | 2009-11-25 | 黄振兴 | Motor iron core conformation |
| CN202282655U (en) * | 2011-10-11 | 2012-06-20 | 浙江特种电机有限公司 | Novel crosswise overlapped and fastened directly-wound stator lamination structure for brushless DC variable frequency motor |
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| CB03 | Change of inventor or designer information |
Inventor after: Lv Zhongwei Inventor after: Xing Yijun Inventor after: Fu Zhihua Inventor after: Huang Guofeng Inventor after: Lu Jianhang Inventor after: Tong Yonggang Inventor before: Xing Yijun Inventor before: Fu Zhihua Inventor before: Zhang Weiqing Inventor before: Huang Guofeng Inventor before: Lu Jianhang Inventor before: Hu Qiang |
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Free format text: CORRECT: INVENTOR; FROM: XING YIJUN FU ZHIHUA ZHANG WEIQING HUANG GUOFENG LU JIANHANG HU QIANG TO: LV ZHONGWEI XING YIJUN FU ZHIHUA HUANG GUOFENG LU JIANHANG TONG YONGGANG |
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Address after: 312400 Zhejiang city of Shaoxing province Shengzhou City Jiajia Road Economic Development Zone No. 18 Patentee after: Zhejiang special motor Limited by Share Ltd Address before: 312400 Zhejiang city of Shaoxing province Shengzhou City Jiajia Road Economic Development Zone No. 18 Patentee before: Zhejiang Special Electric Motor Co., Ltd. |
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