WO2013091254A1 - 一种转子结构 - Google Patents

一种转子结构 Download PDF

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Publication number
WO2013091254A1
WO2013091254A1 PCT/CN2011/084598 CN2011084598W WO2013091254A1 WO 2013091254 A1 WO2013091254 A1 WO 2013091254A1 CN 2011084598 W CN2011084598 W CN 2011084598W WO 2013091254 A1 WO2013091254 A1 WO 2013091254A1
Authority
WO
WIPO (PCT)
Prior art keywords
permanent magnet
grooves
rotor
rotor core
rotor structure
Prior art date
Application number
PCT/CN2011/084598
Other languages
English (en)
French (fr)
Inventor
潘明攀
Original Assignee
Pan Mingpan
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Pan Mingpan filed Critical Pan Mingpan
Priority to PCT/CN2011/084598 priority Critical patent/WO2013091254A1/zh
Publication of WO2013091254A1 publication Critical patent/WO2013091254A1/zh

Links

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

Definitions

  • the utility model relates to a rotor structure, belonging to the field of electric machines.
  • the outer wall surface is usually rounded, or a convex spot for locating the permanent magnet position is protruded on the outer wall surface, and the permanent magnet body matched with the conventional rotor core, as shown in FIG. 1, the inner wall surface 23 is flat.
  • a chamfer 22 is provided on both sides of the outer edge of the permanent magnet, and the processing path of the structure is long, which not only causes waste of materials, but also increases labor cost and reduces production efficiency.
  • the purpose of the utility model is to provide a rotor structure, wherein the rotor core is provided with a groove matching the sharp-pointed corner of the permanent magnet, which not only meets the requirement of obtaining the waveform of the air gap magnetic field, but also saves materials, reduces the production cost, and improves the production. effectiveness.
  • a rotor structure comprising a rotor core and a permanent magnet mounted on an outer side of the rotor core, a plurality of grooves are arranged on the outer side of the rotor core, and a sharp corner is arranged on both sides of the inner edge of the permanent magnet, and the sharp corner is embedded in the rotor core In the groove.
  • the groove described above consists of two inclined planes, the bottom plane of which is in close contact with the plane of the groove.
  • the number of slots described above is equal to the number of permanent magnets.
  • the plurality of grooves described above are circumferentially distributed on the outer wall surface of the rotor core.
  • the outer edges of the permanent magnets described above are provided with chamfers of a certain inclination on both sides.
  • the trimming edge L2 of the outer peripheral edge chamfer of the permanent magnet described above is parallel to the trimming edge L1 of the inner edge sharp corner.
  • the utility model has the following effects: 1) a plurality of grooves are arranged outside the rotor core, and the inner edges of the permanent magnets are provided with sharp corners on both sides, and the sharp corners are embedded in the grooves of the rotor core, Satisfy the need to obtain the waveform of the air gap magnetic field, save material, reduce production cost, and improve production efficiency; 2)
  • the groove is composed of two inclined planes, and the bottom plane of the sharp corner is closely attached to the plane of the groove, and the structure design is reasonable and compact; 3) the outer side of the rotor core is provided with a plurality of grooves, and the number of the plurality of grooves Equal to the number of permanent magnets, a plurality of slots are circumferentially distributed on the outer wall surface of the rotor core, and each slot is embedded in a sharp corner of each of the two adjacent permanent magnets, and the groove functions to position the permanent magnet, and Ensure that the permanent magnets are evenly distributed in the circumferential direction; 4)
  • FIG. 1 Schematic diagram of a prior art permanent magnet structure.
  • FIG. 2 is a schematic view of the structure of the rotor of the present invention.
  • Figure 3 is a partial enlarged view of A-A of Figure 1.
  • Figure 4 is a schematic view of the permanent magnet of the present invention.
  • Figure 6 The permanent magnet machining path of the utility model.
  • a rotor structure includes a rotor core 1 and a permanent magnet 2 on the outer side of the rotor core 1, and a plurality of grooves 1 1 are disposed outside the rotor core 1 and a permanent magnet Both sides of the inner edge of the 2 are provided with sharp corners 21, and the sharp corners 21 are embedded in the grooves 1 1 of the rotor core 1; the grooves 11 are composed of two inclined planes 110, and the bottom plane 210 of the sharp corners 21 is tight.
  • the number of the plurality of grooves 11 is equal to the number of the permanent magnets 2; the plurality of grooves 11 are circumferentially distributed on the outer wall surface of the rotor core 1, and each groove 11 is embedded
  • Two adjacent permanent magnets 2 each have a sharp corner 21; the outer edges of the permanent magnet 2 are provided with a chamfer 22 of a certain inclination; the cutting edge L2 of the outer edge chamfer 22 of the permanent magnet 2 and the sharp edge 21 of the inner edge are cut.
  • Side L1 is parallel.
  • the inner wall surface 23 of the conventional permanent magnet 2 is a flat circular arc shape.
  • chamfers 22 are provided on both sides of the outer edge of the permanent magnet, and the processing path of the permanent magnet of the structure is long. And the need to cut the gap, wasting material.
  • the processing path of the permanent magnet of the present invention is long, and at the same time.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Permanent Field Magnets Of Synchronous Machinery (AREA)

Abstract

一种转子结构，包括转子铁芯（1）和安装在转子铁芯（1）外侧面的永磁体（2），转子铁芯（1）外侧设置有若干凹槽（11），永磁体（2）的内缘两侧设有尖角（21），尖角（21）嵌入转子铁芯（1）的凹槽（11）里。该结构既满足需要获得气隙磁场波形的要求，也满足永磁体加工路径短、节省材料、降低制作成本、提高生产效率、改善电机反电动势波形的要求。

Description

一种转子结构 技术领域：
本实用新型涉及一种转子结构， 属于电机领域。
背景技术：
传统的转子铁芯结构， 外壁面通常是整圓的， 或者在外壁面凸出定位永磁 体位置的凸点， 而与传统转子铁芯配合的永磁体， 如图 1所示， 内壁面 23是平 整的圓弧形状， 为获得气隙磁场波形， 在永磁体的外缘两边设置倒角 22 , 该结 构加工路径长， 不但致使材料浪费， 而且使人工成本增加， 生产效率降低。 发明内容：
本实用新型的目的是提供一种转子结构， 转子铁芯设置有与永磁体下拉尖 角配合的凹槽， 既满足需要获得气隙磁场波形的要求， 也节省了材料， 降低制 作成本， 提高生产效率。
本实用新型的目的是通过下述技术方案予以实现的。
一种转子结构， 包括转子铁芯和安装在转子铁芯外侧面的永磁体， 转子铁 芯外侧设置有若干凹槽， 永磁体的内缘两侧设有尖角， 尖角嵌入转子铁芯的凹 槽里。
上述所述的凹槽由两个倾斜的平面组成， 尖角的底平面紧贴在凹槽的平面 上。
上述所述的若干 槽的数量与永磁体的数量相等。
上述所述的若干 槽均勾周向分布在转子铁芯的外侧壁面上。
上述所述的永磁体的外缘两边设有一定斜度的倒角。
上述所述的永磁体外缘倒角的切边 L2和内缘尖角的切边 L1平行。
本实用新型与现有技术相比， 具有如下效果： 1 )转子铁芯外侧设置有若干 凹槽， 永磁体的内缘两侧设有尖角， 尖角嵌入转子铁芯的凹槽里， 既满足需要 获得气隙磁场波形的要求， 也节省了材料， 降低制作成本， 提高生产效率； 2 ) 所述的凹槽由两个倾斜的平面组成， 尖角的底平面紧贴在凹槽的平面上， 结构 设计合理， 紧凑； 3 )转子铁芯外侧设置有若干凹槽， 若干凹槽的数量与永磁体 的数量相等， 若干 槽均勾周向分布在转子铁芯的外侧壁面上， 每个 槽嵌入 相邻两个永磁体各一个尖角， 凹槽既起到定位永磁体的作用， 又保证永磁体均 匀周向分布； 4 )永磁体的内缘两侧设有尖角， 与转子铁芯外侧面配合， 满足永 磁体加工路径短， 减少材料浪费； 5 )永磁体的外缘两边设有一定斜度的倒角， 改善电机反电动势波形。
附图说明：
图 1 现有技术的永磁体结构示意图。
图 2 是本实用新型转子结构示意图。
图 3 是图 1的 A-A局部放大图。
图 4 是本实用新型永磁体示意图。
图 5 现有技术的永磁体加工路径。
图 6 本实用新型的永磁体加工路径。
具体实施方式：
下面通过具体实施例并结合附图对本实用新型作进一步详细的描述。
如图 2、 图 3和图 4所示， 一种转子结构， 包括转子铁芯 1和安装转子铁芯 1外侧面的永磁体 2 , 转子铁芯 1外侧设置有若干凹槽 1 1 , 永磁体 2的内缘两侧 设有尖角 21 , 尖角 21嵌入转子铁芯 1的凹槽 1 1里； 所述的凹槽 11由两个倾斜 的平面 110组成， 尖角 21的底平面 210紧贴在凹槽 11的平面 110上； 若干凹 槽 1 1的数量与永磁体 2的数量相等； 上述若干 槽 11均勾周向分布在转子铁 芯 1的外侧壁面上， 每个凹槽 11嵌入相邻两个永磁体 2各一个尖角 21 ; 永磁体 2的外缘两边设有一定斜度的倒角 22 ; 永磁体 2外缘倒角 22的切边 L2和内缘 尖角 21的切边 L1平行。
如图 5所示， 传统的永磁体 2内壁面 23是平整的圓弧形状， 为获得气隙磁场 波形， 在永磁体的外缘两边设置倒角 22 , 该结构永磁体的加工路线较长， 且需 要切除缺口， 浪费材料。 而图 6所示， 本实用新型永磁体的加工路径长， 在同时 满足需要获得气隙磁场波形的要求的情况下， 本实用新型节省了材料， 降低制 作成本， 提高生产效率， 改善电机反电动势波形， 设计更加合理。

Claims

权 利 要 求
1、 一种转子结构， 包括转子铁芯 （1 )和安装在转子铁芯（1 )外侧面的永 磁体（ 2 ), 其特征在于： 转子铁芯（ 1 )外侧设置有若干凹槽（ 11 ), 永磁体 ( 2 ) 的内缘两侧设有尖角 （21 ), 尖角 （21 )嵌入转子铁芯 （1 ) 的凹槽（11 )里。
2、 根据权利要求 1所述的一种转子结构， 其特征在于： 所述的凹槽（11 ) 由两个倾斜的平面 （110)组成， 尖角 （21 ) 的底平面 （210) 紧贴在凹槽（11 ) 的平面 （ 110)上。
3、 根据权利要求 1或 2所述的一种转子结构， 其特征在于： 若干凹槽（ 11 ) 的数量与永磁体 ( 2 ) 的数量相等。
4、 根据权利要求 3所述的一种转子结构， 其特征在于： 上述若干凹槽（11 ) 均匀周向分布在转子铁芯 （1 ) 的外侧壁面上。
5、 根据权利要求 1或 2所述的一种转子结构， 其特征在于： 永磁体（2) 的外缘两边设有一定斜度的倒角 （22)。
6、 根据权利要求 4所述的一种转子结构， 其特征在于： 永磁体（2)外缘 倒角 （22) 的切边 L2和内缘尖角 （21) 的切边 L1平行。
PCT/CN2011/084598 2011-12-24 2011-12-24 一种转子结构 WO2013091254A1 (zh)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10136596A (ja) * 1996-10-29 1998-05-22 Aichi Emerson Electric Co Ltd 電動機
CN2706943Y (zh) * 2004-05-24 2005-06-29 广东威灵电机制造有限公司 一种用于电动机的永磁转子
US20080150386A1 (en) * 2006-12-21 2008-06-26 Delta Electronics, Inc. Rotary structure of permanent magnet electric machinery and method for determining the structure thereof
CN201134707Y (zh) * 2007-12-24 2008-10-15 珠海格力电器股份有限公司 一种用于电机的永磁转子
CN201966772U (zh) * 2011-01-14 2011-09-07 北京运通恒昌驱动技术有限公司 一种双固连式直流无刷电机转子

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10136596A (ja) * 1996-10-29 1998-05-22 Aichi Emerson Electric Co Ltd 電動機
CN2706943Y (zh) * 2004-05-24 2005-06-29 广东威灵电机制造有限公司 一种用于电动机的永磁转子
US20080150386A1 (en) * 2006-12-21 2008-06-26 Delta Electronics, Inc. Rotary structure of permanent magnet electric machinery and method for determining the structure thereof
CN201134707Y (zh) * 2007-12-24 2008-10-15 珠海格力电器股份有限公司 一种用于电机的永磁转子
CN201966772U (zh) * 2011-01-14 2011-09-07 北京运通恒昌驱动技术有限公司 一种双固连式直流无刷电机转子

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