WO2009155865A1 - 一种外转子电机 - Google Patents

一种外转子电机 Download PDF

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Publication number
WO2009155865A1
WO2009155865A1 PCT/CN2009/072438 CN2009072438W WO2009155865A1 WO 2009155865 A1 WO2009155865 A1 WO 2009155865A1 CN 2009072438 W CN2009072438 W CN 2009072438W WO 2009155865 A1 WO2009155865 A1 WO 2009155865A1
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WO
WIPO (PCT)
Prior art keywords
stator
winding
outer rotor
component
rotor motor
Prior art date
Application number
PCT/CN2009/072438
Other languages
English (en)
French (fr)
Inventor
鲁楚平
Original Assignee
中山大洋电机股份有限公司
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Filing date
Publication date
Application filed by 中山大洋电机股份有限公司 filed Critical 中山大洋电机股份有限公司
Publication of WO2009155865A1 publication Critical patent/WO2009155865A1/zh

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/10—Casings or enclosures characterised by the shape, form or construction thereof with arrangements for protection from ingress, e.g. water or fingers
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/08—Insulating casings
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
    • H02K5/173—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings
    • H02K5/1735—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings radially supporting the rotary shaft at only one end of the rotor
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/22—Auxiliary parts of casings not covered by groups H02K5/06-H02K5/20, e.g. shaped to form connection boxes or terminal boxes
    • H02K5/225—Terminal boxes or connection arrangements
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/08—Structural association with bearings
    • H02K7/085—Structural association with bearings radially supporting the rotary shaft at only one end of the rotor
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
    • H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
    • H02K21/22—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating around the armatures, e.g. flywheel magnetos

Definitions

  • the present invention relates to an outer rotor motor.
  • the stator structure in the outer rotor motor includes an end cover, a stator core and a winding and an insulator, and the winding is wound around the stator core, and an insulator is mounted on the winding of the winding exposed at both ends of the stator core.
  • the stator with the insulator is tightly fitted with the aluminum alloy end cap, and the bearing chamber and the screw hole are machined on the aluminum alloy end cover.
  • the bearing chamber is used to support the rotation of the motor, and the screw hole is used for mounting and fixing the stator component.
  • the stator structure has the following disadvantages: it is not waterproof, does not prevent oxidation, is not dustproof, has poor insulation performance, is heavy in weight, high in cost, poor in integrity, has many production processes, low in production efficiency, and has many processing steps in the bearing chamber. The dimensional accuracy is low.
  • An object of the present invention is to provide an outer rotor motor in which an insulating outer casing is injection molded on the outer side of the stator core and the winding, and the insulating outer casing encloses the stator core and the winding winding to isolate the outside.
  • the motor has high waterproofing, oxidation and dustproof performance, good insulation, light weight, low cost and good integrity, simplifying the production process and high production efficiency.
  • An outer rotor motor comprising a stator component, a rotor component and a rotating shaft, wherein the rotor component is fitted outside the stator component, the rotor component and the rotating shaft are mounted and coupled together, and the rotating shaft is mounted on the stator component through the bearing support,
  • the stator component includes a stator core and a winding, and a winding is wound around the stator core.
  • An insulating casing is injection molded on the outside of the stator core and the winding, and the insulating casing encloses the stator core and the winding winding. Achieve isolation from the outside world.
  • the present invention has the following advantages: 1) By injecting an insulating outer casing on the outer surface of the stator core and the winding, the insulating outer casing separates the stator core and the winding winding to be isolated from the outside.
  • the integral insulator that constitutes the stator of the outer rotor motor has good insulation properties, and solves the problem of waterproofing and dustproofing of the outer rotor motor.
  • One end of the insulative housing extends axially out of the mounting boss, and the mounting boss is integrally formed in the injection molded insulating housing for fixing the stator component without additional metal end caps, simple structure, simplified process, assembly Simple, saving production costs.
  • the above-mentioned shaft hole is formed in the center of the insulating casing, and a bearing chamber is formed at both ends of the shaft hole, the bearing is installed in the bearing chamber, and the rotating shaft is mounted on the insulating casing through the bearing support, and the bearing chamber formed by injection molding has high precision. Eliminate the machining process, improve production efficiency, and ensure the assembly accuracy of the motor.
  • a plurality of inserts are embedded in the end surface of the boss, and the insert member is provided with a screw hole for mounting and fixing the stator component, and has a simple structure and convenient installation.
  • the above-mentioned insulating housing is embedded with a certain sub-bow clip, and the conductive lead of the end of the winding is extended outside the insulating housing through the stator lead clip, and the structure is simple and convenient to install.
  • the insulative housing described above is a bulk molding compound BMC material or other thermoplastic or thermosetting insulating material injection molding or die casting.
  • the stator replaces the original color metal and the general plastic material by the bulk molding plastic BMC material or other thermoplastic and thermosetting insulating materials, reduces the weight of the motor, improves the heat dissipation effect of the stator, and reduces the temperature rise of the motor.
  • Figure 1 is a cross-sectional view showing the structure of the present invention
  • FIG. 2 is a schematic structural view of a molded stator of the present invention.
  • an outer rotor motor includes a stator member, a rotor member 12 and a rotating shaft 7, and the rotor member 12 is fitted outside the stator member, and the rotor member 12 and the rotating shaft 7 are mounted and connected.
  • the rotating shaft 7 is mounted on the stator member via a bearing 6, and the stator member includes a stator core 1, a winding 2 and an insulating housing 3, and the winding 2 is wound around the stator core 1, in the stator core 1 and
  • the coil winding 2 is injection-molded with an insulating casing 3 made of an insulating material, and the insulating casing 3 encloses the stator core 1 and the coil winding 2 to be isolated from the outside.
  • One end of the insulating housing 3 extends axially out of the mounting boss 14.
  • the core forms a shaft hole 4, and a bearing chamber 5 is formed at both ends of the shaft hole 4.
  • the bearing 6 is mounted inside the bearing chamber 5, and the rotating shaft 7 is supported by the bearing 6 to be mounted on the insulating housing 3.
  • a plurality of inserts 8 are mounted on the end faces of the bosses 14, and the inserts 8 are provided with screw holes 9 for mounting and fixing the stator members.
  • An end insulating block 10 is attached to the end of the stator core 1, and the end insulating block 10 isolates the end face of the stator core 1 from the winding 2 of the winding.
  • a certain sub-bend clamp 11 is embedded in the insulative housing 3, and the end conductive bow I of the turn winding 2 protrudes outside the insulating housing 3 through the stator bow clamp 11.
  • the insulating case 3 is injection molded of a bulk molding compound.
  • An information block 13 is disposed on the end surface of the boss 14, and the information block 13 mainly displays the motor manufacturer, the rated parameters of the motor, safety information, and the like.
  • the stator of the present invention is formed by injection molding or die-casting using a bulk molding BMC material or other thermoplastic or thermosetting insulating material, and sealing both ends of the outer rotor stator core and the winding 2 to form an insulating casing 3 to constitute an outer rotor.
  • the overall insulation of the stator of the motor, the shaped support rotor member rotates two bearing chambers 5, one end of the insulating housing 3 extends axially out of the mounting boss 14 for mounting and fixing the stator component, without the use of an aluminum metal end cap;
  • the end face is inlaid with a plurality of inserts 8, which are provided with screw holes 9 for mounting the stator components. Solve the problem of waterproofing, anti-corrosion, non-ferrous metal wire oxidation, end insulation and installation of the outer rotor motor, improving safety and reliability;
  • the two bearing chambers 5 of the stator are injection-molded to support the rotation of the motor, ensuring the accuracy of the machining process and improving the production efficiency.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Motor Or Generator Frames (AREA)
  • Insulation, Fastening Of Motor, Generator Windings (AREA)
  • Motor Or Generator Cooling System (AREA)

Description

一禾醫专 几
■ 扁或
[1] 本发明涉及一种外转子电机。
[2] 目前， 外转子电机中的定子结构包括端盖、 定子铁芯和线圏绕组和绝缘体， 线 圏绕组绕在定子铁芯上， 在定子铁芯两端露出的线圏绕组上安装绝缘体， 装好 绝缘体的定子再与铝合金端盖紧配合压装， 在铝合金端盖上加工出轴承室和螺 钉孔， 轴承室用于支承电机旋转， 螺钉孔用于安装固定定子部件。 这种定子结 构存在如下不足： 存不防水， 不防氧化， 不防尘， 绝缘性能不良， 定量重， 成 本高、 整体性差， 生产工序多， 生产效率低， 轴承室加工工序多， 轴承室的尺 寸精度较低。
[3] 本发明的目的是提供一种外转子电机， 在定子铁芯和线圏绕组外面注塑有绝缘 外壳， 绝缘外壳将定子铁芯和线圏绕组包在里面实现与外界隔离。 使电机防水 、 氧化、 防尘性能大大提高， 绝缘性好， 定量轻， 成本低、 整体性好， 简化生 产工序， 生产效率高。
[4] 本发明的技术方案是这样实现的：
[5] 一种外转子电机，包括定子部件、 转子部件和转轴， 所述的转子部件套装在定子 部件的外面， 转子部件和转轴安装连接在一起， 转轴通过轴承支承安装在定子 部件上， 所述的定子部件包括定子铁芯、 线圏绕组， 线圏绕组绕在定子铁芯上 ， 在定子铁芯和线圏绕组外面注塑有绝缘外壳， 绝缘外壳将定子铁芯和线圏绕 组包在里面实现与外界隔离。
[6] 本发明与现有技术相比具有如下优点： 1) 通过在定子铁芯和线圏绕组外面注 塑有绝缘外壳， 绝缘外壳将定子铁芯和线圏绕组包在里面实现与外界隔离， 构 成外转子电机定子的整体绝缘体， 绝缘体性好， 解决外转子电机防水、 防尘. 防腐、 防有色金属线氧化、 端部绝缘问题， 提高了安全可靠性; 2) 用注塑的绝缘 材料代原有色金属， 降低电机重量和成本， 提高定子散热效果， 降低电机温升 ;3 ) 电机安装更加方便， 生产效率更加高。
[7] 针对上述技术方案， 本发明可以作出如下改进：
[8] 上述所述绝缘外壳的一端沿轴向延伸出安装凸台， 安装凸台在注塑绝缘外壳吋 一体成型， 用于固定定子部件， 无须另外增加金属端盖， 结构简单， 简化工序 ， 装配简单， 节省生产成本。
[9] 上述所述在绝缘外壳的中心形成轴孔， 在轴孔两端形成轴承室， 轴承安装在轴 承室里面， 转轴通过轴承支承安装在绝缘外壳上， 通过注塑形成的轴承室精度 高， 免除了机加工工序， 提高生产效率， 保证电机的装配精度。
[10] 上述所述在在凸台端面镶嵌有若干个嵌件， 嵌件设置有用于安装固定定子部件 的螺钉孔， 结构简单， 安装方便。
[11] 上述所述在绝缘外壳上嵌入一定子弓 I线夹， 线圏绕组的端部的导电引线通过定 子引线夹伸出绝缘外壳外面， 结构简单， 安装方便。
[12] 上述所述绝缘外壳是团状模塑料 BMC材料或者其它热塑性、 热固性绝缘材料注 塑或者压铸成型。 定子通过团状模塑料 BMC材料或者其它热塑性、 热固性绝缘 材料替代原有色金属和一般塑料材料， 降低电机重量， 提高定子散热效果； 降 低电机温升。
國删
[13] 下面结合附图和实施例对本发明进一步说明。
[14] 图 1是本发明的的结构剖视图；
[15] 图 2是本发明塑封定子的结构示意图。
難
[16] 如图 1、 图 2所示， 一种外转子电机，包括定子部件、 转子部件 12和转轴 7， 所述 的转子部件 12套装在定子部件的外面， 转子部件 12和转轴 7安装连接在一起， 转 轴 7通过轴承 6支承安装在定子部件上， 定子部件包括定子铁芯 1、 线圏绕组 2和 绝缘外壳 3， 线圏绕组 2绕在定子铁芯 1上， 在定子铁芯 1和线圏绕组 2外面注塑有 由绝缘材料构成的绝缘外壳 3， 绝缘外壳 3将定子铁芯 1和线圏绕组 2包在里面实 现与外界隔离。 绝缘外壳 3的一端沿轴向延伸出安装凸台 14。 在绝缘外壳 3的中 心形成轴孔 4， 在轴孔 4两端形成轴承室 5， 轴承 6安装在轴承室 5里面， 转轴 7通 过轴承 6支承安装在绝缘外壳 3上。 在凸台 14端面镶嵌有若干个嵌件 8， 嵌件 8设 置有用于安装固定定子部件的螺钉孔 9。 在定子铁芯 1的端部安装有端部绝缘块 1 0， 端部绝缘块 10将定子铁芯 1的端面与线圏绕组 2隔离开来。 在绝缘外壳 3上嵌 入一定子弓 I线夹 11， 线圏绕组 2的端部导电弓 I线通过定子弓 I线夹 11伸出绝缘外壳 3外面。 绝缘外壳 3是团状模塑料注塑成型。 凸台 14端面上设置有信息块 13， 信 息块 13主要显示电机生产厂家、 电机的额定参数、 安全信息等。
[17] 本发明的定子通过使用团状模塑料 BMC材料或者其它热塑性、 热固性绝缘材料 注塑或者压铸成型， 将外转子定子铁芯、 线圏绕组 2两端部密封形成绝缘外壳 3 ， 构成外转子电机定子的整体绝缘， 成形支承转子部件旋转两个轴承室 5， 绝缘 外壳 3的一端沿轴向延伸出安装凸台 14用于安装固定定子部件， 无须使用铝金属 端盖;在在凸台 14端面镶嵌有若干个嵌件 8， 嵌件 8设置有用于安装固定定子部件 的螺钉孔 9。 解决外转子电机防水、 防腐、 有色金属线氧化、 端部绝缘及安装问 题， 提高了安全可靠性；
通过团状模塑料密封成形替代原有色金属和一般塑料材料， 降低电机重量， 提 高定子散热效果； 降低电机温升；
通过注塑成形定子的两个轴承室 5支承电机旋转， 保证了精度免除了机加工工序 ， 提高生产效率。

Claims

权利要求书
[1] 一种外转子电机，包括定子部件、 转子部件 (12)和转轴 (7)， 所述的转子部件(
12)套装在定子部件的外面， 转子部件 (12)和转轴 (7)安装连接在一起， 转轴 ( 7)通过轴承 (6)支承安装在定子部件上， 其特征在于： 所述的定子部件包括 定子铁芯 （1) 、 线圏绕组 （2) ， 线圏绕组 （2) 绕在定子铁芯 （1) 上， 在定子铁芯 （1) 和线圏绕组 （2) 外面注塑有绝缘外壳 （3) ， 绝缘外壳 ( 3) 将定子铁芯 （1) 和线圏绕组 （2) 包在里面实现与外界隔离。
[2] 根据权利要求 1所述的一种外转子电机，其特征在于：
绝缘外壳 （3) 的一端沿轴向延伸出安装凸台 (14)。
[3] 根据权利要求 1或 2所述的一种外转子电机， 其特征在于： 在绝缘外壳 （3) 的中心形成轴孔 （4) ， 在轴孔 (4) 两端形成轴承室 （5) ， 轴承 （6) 安 装在轴承室 （5) 里面， 转轴 （7) 通过轴承 （6) 支承安装在绝缘外壳 （3 ) 上。
[4] 根据权利要求 3所述的一种外转子电机， 其特征在于： 在凸台 (14)端面镶嵌 有若干个嵌件 （8) ， 嵌件 （8) 设置有用于安装固定定子部件的螺钉孔 （9
[5] 根据权利要求 3所述的一种外转子电机， 其特征在于： 在绝缘外壳 （3) 上 嵌入一定子引线夹 （11) ， 线圏绕组 （2) 的端部的导电引线通过定子引线 夹 ( 11) 伸出绝缘外壳 (3) 外面。
[6] 根据权利要求 1所述的一种外转子电机， 其特征在于： 绝缘外壳 （3) 是团 状模塑料 BMC材料或者其它热塑性、 热固性绝缘材料注塑或者压铸成型。
[7] 根据权利要求 3所述的一种外转子电机， 其特征在于： 凸台 (12)端面上设置 有信息块 ( 13) 。
PCT/CN2009/072438 2008-06-26 2009-06-25 一种外转子电机 WO2009155865A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN2008100291463A CN101615817B (zh) 2008-06-26 2008-06-26 一种外转子电机
CN200810029146.3 2008-06-26

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WO2009155865A1 true WO2009155865A1 (zh) 2009-12-30

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US (1) US20100019586A1 (zh)
CN (1) CN101615817B (zh)
CA (1) CA2670183A1 (zh)
DE (1) DE102009026045A1 (zh)
FR (1) FR2933821B1 (zh)
GB (1) GB2461168A (zh)
IT (1) IT1397506B1 (zh)
WO (1) WO2009155865A1 (zh)

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IT1397506B1 (it) 2013-01-16
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GB0910641D0 (en) 2009-08-05
FR2933821B1 (fr) 2019-06-28
DE102009026045A1 (de) 2010-02-04
FR2933821A1 (fr) 2010-01-15
US20100019586A1 (en) 2010-01-28
ITMI20091128A1 (it) 2009-12-27

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