CN103051074A - 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 PDF

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Publication number
CN103051074A
CN103051074A CN2011103057934A CN201110305793A CN103051074A CN 103051074 A CN103051074 A CN 103051074A CN 2011103057934 A CN2011103057934 A CN 2011103057934A CN 201110305793 A CN201110305793 A CN 201110305793A CN 103051074 A CN103051074 A CN 103051074A
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China
Prior art keywords
stator
small pieces
frequency motor
circle
stator core
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CN103051074B (en
Inventor
邢一均
傅志华
张伟青
黄国丰
鲁健航
胡强
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Zhejiang special motor Limited by Share Ltd
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ZHEJIANG SPECIAL ELECTRIC MOTOR CO Ltd
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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

A kind of directly-wound stator laminating structure of novel crossed fastener type brushless DC variable frequency motor
Technical field
The invention belongs to the motor stator punching technical field, especially relevant with a kind of directly-wound stator laminating structure of novel crossed fastener type brushless DC variable frequency motor.
Background technology
Stator is the actionless part of motor.Stator is comprised of stator core, stator winding and support three parts.The Main Function of stator is to produce rotating magnetic field.
Existing stator core has the multi-disc stator punching to be formed by stacking, the manufacturing process of stator punching is to formulate sub-punching in the silicon strip upper punch, the stator punching of conventional structure be shaped as integral type, its structure is closed-type circular, inner headed face punching out contract groove is used for twining electromagnetic wire, the waste material that the stator punching of this kind integral type shape produces in the punching out process is many, is unfavorable for that motor manufacturing enterprise saves cost when the stator punching discharge, and rear road discharge operation can only be abided by the conventional and punching out stator punching side by side of Xun.And, when the stator punching of this kind shape twines electromagnetic wire at coil winding machine, because electromagnetic wire is to draw through the line mouth, be subjected to the line mouth width gap affects of coil winding machine, after electromagnetic wire twined and finishes, must there be the gap in both sides, therefore the copper factor of stator punching is not high, and copper factor is only about 65%.
Traditional fraction block structure has air gap to exist because stator yoke section disconnects, so produce magnetic potential of air gap, causes the magnetic potential loss.
In view of this, the stator punching of existing structure is needed improvement badly.
Summary of the invention
The present invention is directed to the deficiency that above-mentioned prior art exists, provide that a kind of to have a waste material that manufacturing process produces few, the stator copper factor after machining is high, and stator punching that can the Effective Raise motor performance.
For this reason, the invention provides following technical scheme: a kind of directly-wound stator laminating structure of novel crossed fastener type brushless DC variable frequency motor, it is characterized in that: described stator punching is split type, single stator core is intersected to fold to detain by a plurality of stator punching small pieces and forms, one end of stator punching small pieces is the circular arc of projection, the other end is spill, arc end is positioned at the circular arc circle centre position and is provided with positioning convex point, this positioning convex point epirelief is recessed, a plurality of stator punching fritters intersect folds the stator core that is fastened as a bar shaped, then circle is made the stator core of a circle, is welded into the integral body of a circle in the head and the tail junction.
As the further of such scheme improved and replenish, the present invention also comprises following technical characterictic:
Described two adjacent stator punching small pieces are take the center of circle of the circular arc of projection as round dot, and two adjacent punching small pieces are closed behind the rotation alpha degree, α=360 °/N, and N is the number of one group of stator punching small pieces, the stator core after the closure can effectively prevent the appearance that magnetic leakage is present.
Described stator core forms a straight iron core by the folded button of described stator punching fritter intersection, then insert insulation framework, electromagnetic wire can be wrapped on the skeleton, and the stator core circle that winds electromagnetic wire is made the stator core of a circle, uses the method firm welding of welding in the head and the tail junction.
On the stator punching small pieces at place, described two ends positioning convex point is not set.
The place also is provided with the button point in the middle of the described stator punching small pieces, and this button point epirelief is recessed, the location of each stator punching small pieces when being used for assembling.
Manufacturing process of the present invention is: at first go out the stator punching small pieces that number row meets quantitative requirement, then the sub-punching small pieces that number are ranked intersect folds button, to fold at last the complete stator punching small pieces rotation of button and make head and the tail closed, use the method firm welding of welding in the head and the tail junction.
Compare with the stator punching of existing structure, the present invention has following beneficial effect: 1, by the rational sorting to the stator punching small pieces, can reduce waste material, the waste material of minimizing is to make 1/3rd of original all-in-one-piece stator punching; 2, improve the copper factor of stator, the stator core fritter that forms at the folded button of single stator punching small pieces twines electromagnetic wire, owing to be not subjected to the impact (both sides are unobstructed) in space, both sides, therefore not affected by the outspoken footpath of line of coil winding machine, the copper factor of stator can be promoted to more than 75%; 3, the coiling processing technology is simple.3, because the connected mode of the stator punching of patent of the present invention is to adopt the mode of intersection fastener type, reduce the air gap leakage field of stator core yoke section, be conducive to improve the electromagnetic performance of motor, the efficient of motor improves more than 3% than traditional sectional type.
Description of drawings
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 that sub-punching small pieces form that is ranked.
Fig. 3 is the folded structure chart that forms of detaining of sub-punching small pieces that is ranked more.
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, button point; 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 the circular arc of projection, the other end is spill, arc end is positioned at the circular arc circle centre position and is provided with positioning convex point 2, these positioning convex point 2 epireliefs are recessed, middle place also is provided with button point 3, and these button point 3 epireliefs are recessed, the location of each stator punching small pieces when being used for assembling.
Figure 2 shows that this is ranked sub-punching small pieces 1 by a punching out of forging press out.
Figure 3 shows that the folded button of sub-punching small pieces 1 intersection that is ranked forms more.
Fig. 4 is that the stator punching small pieces of the present invention place of interconnecting all rotates the stator core that forms after 40 °, its head and the tail junction welding.
Manufacturing process of the present invention is: at first go out the stator punching small pieces 1 that number row meets quantitative requirement, then the sub-punching small pieces 1 that number are ranked intersect folds button, to fold at last the complete stator punching small pieces rotation of button and make head and the tail closed, use the method firm welding of welding in the head and the tail junction.

Claims (5)

1. the directly-wound stator laminating structure of a novel crossed fastener type brushless DC variable frequency motor, it is characterized in that: described stator punching is split type, single stator core (4) is intersected to fold to detain by a plurality of stator punching small pieces and forms, one end of stator punching small pieces (1) is the circular arc of projection, the other end is spill, arc end is positioned at the circular arc circle centre position and is provided with positioning convex point (2), this positioning convex point (2) epirelief is recessed, a plurality of stator punching fritters intersect folds the stator core that is fastened as a bar shaped, then circle is made the stator core of a circle, is welded into the integral body of a circle in the head and the tail junction.
2. the directly-wound stator laminating structure of a kind of novel crossed fastener type brushless DC variable frequency motor as claimed in claim 1, it is characterized in that: described two adjacent stator punching small pieces (1) are take the center of circle of the circular arc of projection as round dot, two adjacent punching small pieces are closed behind the rotation alpha degree, α=360 °/N, N is the number of one group of stator punching small pieces.
3. the directly-wound stator laminating structure of a kind of novel crossed fastener type brushless DC variable frequency motor as claimed in claim 2, it is characterized in that: described stator core (4) forms a straight iron core by the folded button of described stator punching fritter intersection, then insert insulation framework, electromagnetic wire can be wrapped on the skeleton, the stator core circle that winds electromagnetic wire is made the stator core of a circle, uses the method firm welding of welding in the head and the tail junction.
4. the directly-wound stator laminating structure of a kind of novel crossed fastener type brushless DC variable frequency motor as claimed in claim 3 is characterized in that: on the stator punching small pieces (1) at place, described two ends positioning convex point is not set.
5. the directly-wound stator laminating structure of a kind of novel crossed fastener type brushless DC variable frequency motor as claimed in claim 3 is characterized in that: the place also is provided with button point (3) in the middle of the described stator punching small pieces (1), and this button point (3) epirelief is recessed.
CN201110305793.4A 2011-10-11 2011-10-11 Novel crossly-stacked directly-wound stator lamination structure of brushless direct-current variable-frequency motor Active CN103051074B (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
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
CN109660102A (en) * 2017-10-10 2019-04-19 株式会社Tgk Driving device
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
CN112688443A (en) * 2020-10-08 2021-04-20 郭星 Stator punching sheet monomer, stator punching sheet and motor stator

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003204667A (en) * 2003-01-23 2003-07-18 Mitsubishi Electric Corp Linear motor
US20080129141A1 (en) * 2006-12-01 2008-06-05 Oriental Motor Co., Ltd. Laminated Core Structure of Motor
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
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
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

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003204667A (en) * 2003-01-23 2003-07-18 Mitsubishi Electric Corp Linear motor
US20080129141A1 (en) * 2006-12-01 2008-06-05 Oriental Motor Co., Ltd. Laminated Core Structure of Motor
CN101359844A (en) * 2008-09-27 2009-02-04 沈阳工业大学 Permanent magnet wind power generator of combined stator structure
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
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

Cited By (4)

* Cited by examiner, † Cited by third party
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
CN109660102A (en) * 2017-10-10 2019-04-19 株式会社Tgk Driving device
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
CN112688443A (en) * 2020-10-08 2021-04-20 郭星 Stator punching sheet monomer, stator punching sheet and motor stator

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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

COR Change of bibliographic data

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

C14 Grant of patent or utility model
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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.